阅读说明：本技术 模块化发电机、风力发电机组、吊装工装及吊装方法 (Modular generator, wind generating set, hoisting tool and hoisting method ) 是由 侯楠 罗九阳 于 2019-11-25 设计创作，主要内容包括：本申请实施例提供了一种模块化发电机、风力发电机组、吊装工装及吊装方法。该模块化发电机,包括定子、转子和轴系,定子的定子支架与轴系的定轴固连,转子的转子支架与轴系的转轴固连,定子与转子相配合,模块化发电机还包括：第一可拆卸连接件和定轴固连件；第一可拆卸连接件与定子支架固连,第一可拆卸连接件与转子支架可拆卸连接,或,第一可拆卸连接件与转子支架固连,第一可拆卸连接件与定子支架可拆卸连接；定轴固连件分别连接定子支架和定轴。本申请实施例降低了吊装成本,或降低了吊装难度,或提高了吊装效率,或降低了危险系数。(The embodiment of the application provides a modular generator, a wind generating set, a hoisting tool and a hoisting method. This modular generator, including stator, rotor and shafting, the stator support of stator links firmly with the dead axle of shafting, and the rotor support of rotor links firmly with the pivot of shafting, and the stator cooperatees with the rotor, and modular generator still includes: the first detachable connecting piece is fixedly connected with the fixed shaft; the first detachable connecting piece is fixedly connected with the stator support and detachably connected with the rotor support, or the first detachable connecting piece is fixedly connected with the rotor support and detachably connected with the stator support; the fixed shaft fixing piece is respectively connected with the stator bracket and the fixed shaft. According to the embodiment of the application, the hoisting cost is reduced, or the hoisting difficulty is reduced, or the hoisting efficiency is improved, or the risk coefficient is reduced.)

1. A modular generator comprising a stator (30), a rotor (20) and a shaft system (40), wherein a stator support (31) of the stator (30) is fixedly connected with a fixed shaft (42) of the shaft system (40), a rotor support (21) of the rotor (20) is fixedly connected with a rotating shaft (41) of the shaft system (40), the stator (30) is matched with the rotor (20), the modular generator is characterized by further comprising: a first detachable connecting piece (70) and a fixed shaft fixing piece (90);

the first detachable connecting piece (70) is fixedly connected with the stator support (31), and the first detachable connecting piece (70) is detachably connected with the rotor support (21); or, the first detachable connecting piece (70) is fixedly connected with the rotor bracket (21), and the first detachable connecting piece (70) is detachably connected with the stator bracket (31);

the fixed shaft fixing piece (90) is respectively connected with the stator bracket (31) and the fixed shaft (42);

the stator support (31) is detachably connected with a second detachable connecting piece (80), and the second detachable connecting piece (80) is matched with the hoisting equipment (10); and/or the rotor support (21) is adapted for detachable connection with a second detachable connection (80), the second detachable connection (80) being adapted for cooperation with a lifting apparatus (10).

2. Modular generator as claimed in claim 1, characterised in that the direction of removable coupling of said first removable coupling member (70) to said rotor support (21) is parallel to the direction of coupling of said fixed shaft fastening member (90) to said stator support (31); and/or the direction of the detachable connection of the first detachable connecting piece (70) and the rotor support (21) is parallel to the direction of the connection of the fixed shaft fixing piece (90) and the fixed shaft (42);

or the direction of the detachable connection of the first detachable connecting piece (70) and the stator support (31) is parallel to the direction of the connection of the fixed shaft fixing piece (90) and the stator support (31); and/or the direction of the detachable connection of the first detachable connecting piece (70) and the stator support (31) is parallel to the direction of the connection of the fixed shaft fixing piece (90) and the fixed shaft (42).

3. Modular generator according to claim 1 or 2, characterized in that said first detachable connection (70) comprises: a support (71) and a removable member;

one end of the supporting piece (71) is provided with a first connecting surface (71a), and the first connecting surface (71a) is matched with and connected with the stator bracket (31);

the other end of the support piece (71) is provided with a second connecting surface (71b), and the second connecting surface (71b) is matched with the rotor bracket (21);

the detachable parts are respectively connected with the second connecting surface (71b) of the supporting part (71) and the rotor bracket (21); or, the detachable parts are respectively connected with the first connection face (71a) of the support (71) and the stator frame (31).

4. A wind power plant comprising: a tower (60) and a nacelle assembly, wherein a nacelle bedplate (50) is arranged on the top of the tower (60);

the wind power plant is characterized by further comprising a modular generator according to any of the claims 1-3 above;

and a fixed shaft (42) in a shaft system (40) of the modular generator is fixedly connected with the cabin base (50).

5. A hoist and mount frock of modularization generator, the modularization generator includes stator (30), spider (21) and shafting (40), hoist and mount frock's characterized in that includes: a first detachable connection (70) and a second detachable connection (80);

the first detachable connecting piece (70) is used for being detachably connected with a stator support (31) of the stator (30), and the first detachable connecting piece (70) is also used for being detachably connected with a rotor support (21) of the rotor support (21);

the second detachable connecting piece (80) is used for being detachably connected with the stator support (31) and/or the rotor support (21), and the second detachable connecting piece (80) is also used for being matched with hoisting equipment (10).

6. The hoisting tool according to claim 5, wherein the direction of the detachable connection of the first detachable connection member (70) and the stator support (31) is parallel to the direction of the connection of the stator support (31) and the fixed shaft (42) of the shaft system (40);

and/or the direction of the detachable connection of the first detachable connecting piece (70) and the rotor support (21) is parallel to the direction of the connection of the stator support (31) and the fixed shaft (42) of the shaft system (40).

7. Hoisting tool according to claim 5 or 6, characterized in that the first detachable connection (70) comprises: a support (71) and a removable member;

one end of the support (71) is provided with a first connecting surface (71a), and the first connecting surface (71a) is used for being matched with the stator bracket (31); and/or the other end of the support (71) is provided with a second connecting surface (71b), and the second connecting surface (71b) is used for being matched with the rotor bracket (21);

for connecting the one end of the support (71) and the stator frame (31), respectively, and/or for connecting the other end of the support (71) and the rotor frame (21), respectively.

8. Hoisting tool according to claim 7, wherein the detachable part comprises: oppositely pulling the screw rod;

one end of the opposite-pulling screw is in threaded fit with a threaded hole on a first connecting surface (71a) of the support piece (71), and the other end of the opposite-pulling screw is used for being in threaded fit with a threaded hole of the stator support (31);

and/or one end of the opposite-pulling screw is in threaded fit with a threaded hole in a second connecting surface (71b) of the support piece (71), and the other end of the opposite-pulling screw is in threaded fit with a threaded hole in the rotor bracket (21).

9. A hoisting method of a modular generator based on the hoisting tool of any one of the claims 5-8, the hoisting method being characterized by comprising:

hoisting a shafting (40) to a cabin base (50) of a wind generating set;

-co-operating the stator (30) with the rotor (20);

detachably connecting a stator support (31) of the stator (30) and a rotor support (21) of the rotor support (21) by using a first detachable connecting piece (70) so that the stator (30) and the rotor support (21) are detachably connected into a whole;

-removably connecting a second removable connection (80) to said stator support (31) and/or removably connecting a second removable connection (80) to said rotor support (21);

hoisting the stator (30) and the rotor (20) which are detachably connected into a whole to the shafting (40) by using the second detachable connecting piece (80);

and fixedly connecting the stator support (31) with a fixed shaft (42) of the shaft system (40), fixedly connecting the rotor support (21) with a rotating shaft (41) of the shaft system (40), and releasing the detachable connection between the first detachable connecting piece (70) and the stator support (31), and/or releasing the detachable connection between the first detachable connecting piece (70) and the rotor support (21).

10. Hoisting method according to claim 9, wherein said hoisting of the shafting (40) to the nacelle base (50) of the wind power plant comprises:

hoisting the shaft system (40);

aligning a fixed shaft (42) of the shafting (40) with a mounting flange of the cabin base (50);

and fixedly connecting the aligned fixed shaft (42) with the mounting flange.

11. Hoisting method according to claim 9 or 10, wherein if the second detachable connection member (80) is detachably connected to the rotor support (21), the hoisting method further comprises: releasing the second detachable connection (80) from the rotor bracket (21).

12. Hoisting method according to claim 9 or 10, wherein said hoisting the stator (30) and the rotor support (21), which are detachably connected as a whole, to the shaft line (40) by means of the second detachable connection (80) comprises:

hoisting the stator (30) and the rotor frame (21) detachably connected as a whole by using the second detachable connecting piece (80);

and aligning the stator support (31) with a fixed shaft (42) of the shaft system (40), and aligning the rotor support (21) with a rotating shaft (41) of the shaft system (40).

13. Hoisting method according to claim 12, wherein said aligning the stator frame (31) with the fixed axis (42) of the shaft system (40) comprises:

opposing a mounting surface of the stator holder (31) to a mounting surface of the dead axle (42);

and controlling the relative position of the stator bracket (31) and the fixed shaft (42) to enable a preset gap (d) to be reserved between the mounting surface of the stator bracket (31) and the mounting surface of the fixed shaft (42).

14. Hoisting method according to claim 13, wherein the securing of the stator frame (31) to the fixed shaft (42) of the shaft system (40), the securing of the rotor frame (21) to the rotating shaft (41) of the shaft system (40), the releasing of the detachable connection between the first detachable connection (70) and the stator frame (31), and/or the releasing of the detachable connection between the first detachable connection (70) and the rotor frame (21) comprises:

fixedly connecting the rotor bracket (21) with the rotating shaft (41) by using a rotating shaft (41) fixing piece;

the stator support (31) is fixedly connected with the fixed shaft (42) step by utilizing a fixed shaft (42) fixing piece, the detachable connection between the first detachable connecting piece (70) and the stator support (31) is released step by step, and/or the detachable connection between the first detachable connecting piece (70) and the rotor support (21) is released step by step.

15. Hoisting method according to claim 14, wherein the stepwise fastening of the stator frame (31) to the dead axle (42) by means of a dead axle (42) fastening, the stepwise releasing of the detachable connection between the first detachable connection (70) and the stator frame (31) and/or the stepwise releasing of the detachable connection between the first detachable connection (70) and the rotor frame (21) comprises:

loosening the detachable connection between the first detachable connecting piece (70) and the stator support (31) for multiple times, and/or loosening the detachable connection between the first detachable connecting piece (70) and the rotor support (21) for multiple times, and correspondingly tightening the fixed connection between the fixed shaft fixing piece (90) and the stator support (31) and/or the fixed shaft (42) for one time after each loosening until the preset gap (d) is eliminated;

or continuously loosen the first detachable connecting piece (70) and the detachable connection between the stator supports (31), and/or continuously tighten the fixed shaft fixing piece (90) and the stator supports (31) and/or the fixed shaft (42) synchronously and continuously, wherein the first detachable connecting piece (70) and the rotor supports (21) are detachably connected, and the preset gap (d) is eliminated.

Technical Field

The application relates to the technical field of wind power, in particular to a modular generator, a wind generating set, a hoisting tool and a hoisting method.

Background

With the continuous improvement of the power of a wind generating set (hereinafter referred to as a set), the size of a generator in the set is larger and larger, and the size is easy to exceed a transportation limit value, so that the transportation difficulty is caused. For example, the outer diameter of the generator may reach or even exceed 5.5m, which may exceed road transportation limits, making land transportation difficult.

Modularizing the generator is an important solution to this problem. Specifically, a stator, a rotor and a shafting of the generator are manufactured and transported separately, the generator is assembled into a complete generator on the erection site of the generator set, and then the assembled generator is integrally hoisted to an engine room base at the top of a tower barrel of the generator set.

However, as the size of the generator increases, the weight of the stator, the rotor and the shaft system also increases, and the height of the tower in the generator set also increases continuously. For example, the total weight of the generator reaches 100t (ton), the weight of a shafting reaches 50t, the height of a tower barrel reaches 150m (meter), and according to the existing integral hoisting mode of the generator, a scarce crane with extra-large tonnage and ultrahigh hoisting height is needed, so that the hoisting cost is greatly increased, the whole life cycle cost of the generator is not reduced, and the generator is difficult to hoist, low in hoisting efficiency and high in risk factor.

Disclosure of Invention

The application aims at the defects of the existing mode, provides the modularized generator, the wind generating set, the hoisting tool and the hoisting method, and is used for solving the technical problems that the hoisting cost of the integral hoisting of the generator is high, or the hoisting difficulty is large, or the hoisting efficiency is low, or the danger coefficient is high in the prior art.

In a first aspect, an embodiment of the present application provides a modular generator, including stator, rotor and shafting, the stator support of stator links firmly with the dead axle of shafting, and the rotor support of rotor links firmly with the pivot of shafting, and the stator cooperates with the rotor, and modular generator still includes: the first detachable connecting piece is fixedly connected with the fixed shaft;

the first detachable connecting piece is fixedly connected with the stator support and detachably connected with the rotor support; or the first detachable connecting piece is fixedly connected with the rotor bracket and detachably connected with the stator bracket;

the fixed shaft fixing piece is respectively connected with the stator bracket and the fixed shaft;

the stator bracket is used for being detachably connected with a second detachable connecting piece, and the second detachable connecting piece is used for being matched with hoisting equipment; and/or the rotor support is used for being detachably connected with a second detachable connecting piece, and the second detachable connecting piece is used for being matched with the hoisting equipment.

In a second aspect, an embodiment of the present application provides a wind turbine generator system, including: a tower, a nacelle assembly and a modular generator as provided in the first aspect above;

a cabin base in the cabin assembly is arranged at the top of the tower;

a fixed shaft in a shaft system of the modular generator is fixedly connected with a cabin base.

In a third aspect, an embodiment of the present application provides a hoisting tool for a modular generator, where the modular generator includes a stator, a rotor, and a shaft system, the hoisting tool includes: a first detachable connector and a second detachable connector;

the first detachable connecting piece is used for being detachably connected with a stator support of the stator, and the first detachable connecting piece is also used for being detachably connected with a rotor support of the rotor;

the second detachable connecting piece is used for being detachably connected with the stator support and/or the rotor support, and the second detachable connecting piece is also used for being matched with the hoisting equipment.

In a fourth aspect, an embodiment of the present application provides a hoisting method for a modular generator, where based on the hoisting tool provided in the third aspect, the hoisting method includes:

hoisting a shafting to a cabin base of a wind generating set;

matching the stator with the rotor;

the stator support of the stator and the rotor support of the rotor are detachably connected by using a first detachable connecting piece, so that the stator and the rotor are detachably connected into a whole;

the second detachable connecting piece is detachably connected with the stator support, and/or the second detachable connecting piece is detachably connected with the rotor support;

hoisting the stator and the rotor which are detachably connected into a whole to a shaft system by using a second detachable connecting piece;

and (2) fixedly connecting the stator support with a fixed shaft of the shaft system, fixedly connecting the rotor support with a rotating shaft of the shaft system, and removing the detachable connection between the first detachable connecting piece and the stator support and/or removing the detachable connection between the first detachable connecting piece and the rotor support.

The beneficial technical effects brought by the technical scheme provided by the embodiment of the application comprise:

1. by adopting the modularized generator or the wind generating set provided by the embodiment of the application, the stator, the rotor and other modules such as a shaft system can be separately hoisted, the single hoisting weight is reduced, the hoisting cost is reduced, the hoisting difficulty is reduced, the hoisting efficiency is improved, and the risk coefficient is also reduced;

2. by adopting the modular generator or the wind generating set provided by the embodiment of the application, the rotor and the stator are connected into a whole by utilizing the first detachable connecting piece fixedly connected to the stator support or fixedly connected to the rotor support, so that the relative movement which is possibly generated during the integral hoisting of the rotor and the stator can be limited, the current relative position between the stator and the rotor is kept, and after the hoisting is finished, the stator and the rotor are restored to the accurate relative position;

3. by adopting the modular generator or the wind generating set provided by the embodiment of the application, the hoisting of the stator bracket or the hoisting of the rotor bracket by the hoisting equipment can be realized by means of the second detachable connecting piece, and an independent hoisting structure does not need to be manufactured on the stator bracket or the rotor bracket, so that the stator or the rotor can keep the original structure;

4. by adopting the hoisting tool or hoisting method provided by the embodiment of the application, the stator and the rotor of the modular generator are hoisted separately from other modules such as a shaft system, so that the single hoisting weight is reduced, the hoisting cost is reduced, the hoisting difficulty is reduced, the hoisting efficiency is improved, and the risk coefficient is also reduced;

5. by adopting the hoisting tool or hoisting method provided by the embodiment of the application, the rotor and the stator are connected into a whole by utilizing the first detachable connecting piece, the relative movement which is possibly generated during the integral hoisting of the rotor and the stator can be limited, the current relative position between the stator and the rotor is kept, and after the hoisting is finished, the stator and the rotor are restored to the accurate relative position;

6. by adopting the hoisting tool or hoisting method provided by the embodiment of the application, the hoisting equipment is used for hoisting the stator bracket or the rotor bracket by utilizing the second detachable connecting piece, and an independent hoisting structure is not required to be manufactured on the stator bracket or the rotor bracket, so that the stator or the rotor is kept in the original structure;

7. the hoisting tool or hoisting method provided by the embodiment of the application comprises the first detachable connecting piece and the second detachable connecting piece, is simple in structure, convenient to use, transport and store, low in cost and high in popularization, and can be repeatedly used.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a modular generator provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a support member of a first detachable connection member in a modular generator provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a wind turbine generator system according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a state of a hoisting shaft system by using the hoisting method provided by the embodiment of the application;

fig. 5 is a schematic view of a state that a shafting and a cabin base are installed by using the hoisting method provided by the embodiment of the present application;

FIG. 6 is a schematic diagram illustrating a state of hoisting a stator and a rotor integrally connected by using the hoisting method provided by the embodiment of the present application;

fig. 7 is a schematic view of a state that a stator and a rotor connected as a whole are aligned with a shaft system by using the hoisting method provided by the embodiment of the present application;

FIG. 8 is an enlarged view taken at A in FIG. 7;

fig. 9 is a schematic view of a state in which a stator and a rotor are installed with a shaft system by using the hoisting method provided by the embodiment of the present application;

FIG. 10 is an enlarged view of FIG. 9 at B;

fig. 11 is a schematic flow chart of a first implementation manner of a hoisting method provided in the embodiment of the present application;

FIG. 12 is a schematic flowchart of step S101 in FIG. 11;

FIG. 13 is a schematic flowchart of step S105 in FIG. 11;

FIG. 14 is a schematic view of the process of step S1052 in FIG. 13;

FIG. 15 is a schematic flowchart of step S106 in FIG. 11;

fig. 16 is a schematic flow chart of a second implementation manner of the hoisting method provided in the embodiment of the present application.

In the figure:

10-hoisting equipment;

20-a rotor; 21-a rotor support; 22-a pole assembly;

30-a stator; 31-a stator support; 32-iron core; 33-winding;

40-axis system; 41-a rotating shaft; 42-fixed axis; 43-bearing

50-a nacelle base; 60-tower drum;

70-a first detachable connection; 71-a support; 71 a-a first connection face; 71 b-a second connection face;

80-a second detachable connection; 90-fixed shaft fixing piece;

d-preset gap.

Detailed Description

Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, components, and/or groups thereof. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

The terms referred to in this application will first be introduced and explained:

modularization: the main components of the motor (including a generator or a motor), such as a stator, a rotor, a shaft system and the like, are divided into units with relatively small volume, weight or size, the units are produced in a standardized mode as much as possible, and finally the small units are assembled into the integral motor in a certain process sequence.

Full life cycle cost: also known as: leveling kilowatt-hour costs, namely LCOE, full english: a Levelized Cost of Energy. The standard electricity consumption cost is the electricity generation cost calculated after the cost and the electricity generation amount in the life cycle of the project are standardized, namely the cost current value in the life cycle/the electricity generation amount current value in the life cycle. The cost also includes construction cost and operation and maintenance cost.

The inventor of the present application has conducted research and found that as the size of the generator increases, the weight of the stator, the rotor and the shaft system also increases, and the height of the tower in the generator set also increases continuously. For example, the weight of the whole generator reaches 100t, the weight of a shafting reaches 50t, the height of a tower barrel reaches 150m, and according to the existing integral hoisting mode of the generator, a scarce crane with extra-large tonnage and ultrahigh hoisting height is needed, so that the hoisting cost is greatly increased, the reduction of the whole life cycle cost of the whole generator is not facilitated, and the hoisting difficulty is high, the hoisting efficiency is low, and the risk factor is high.

The embodiment of the application provides a modular generator, a wind generating set, a hoisting tool and a hoisting method, and aims to solve the technical problems in the prior art.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.

The embodiment of the application provides a modular generator, and a schematic structural diagram of the modular generator is shown in fig. 1, and the modular generator comprises: stator 30, rotor 20 and shafting 40, stator support 31 of stator 30 is linked firmly with the dead axle 42 of shafting 40, and rotor support 21 of rotor 20 is linked firmly with the pivot 41 of shafting 40, and stator 30 cooperatees with rotor 20.

The modular generator further comprises: a first detachable connector 70 and a fixed axis fastening member 90.

The first detachable connecting piece 70 is fixedly connected with the stator support 31, and the first detachable connecting piece 70 is detachably connected with the rotor support 21; or, the first detachable connecting piece 70 is fixedly connected with the rotor bracket 21, and the first detachable connecting piece 70 is detachably connected with the stator bracket 31.

The fixed shaft fixing member 90 is connected to the stator holder 31 and the fixed shaft 42, respectively.

Stator frame 31 is adapted to be removably coupled to a second removable coupling 80 (see fig. 6), second removable coupling 80 being adapted to cooperate with lifting apparatus 10; and/or, rotor support 21 is adapted to be removably coupled to a second removable coupling 80, and second removable coupling 80 is adapted to mate with lifting apparatus 10.

The modular generator provided by the embodiment can be structurally divided into parts including the modular stator 30, the rotor 20, the shaft system 40 and the like. The stator 30 may also be divided into smaller structural units, including but not limited to: the stator bracket 31, the iron core 32 and the winding assembly 33 are assembled; the rotor 20 may also be divided into smaller structural units, including but not limited to: a rotor support 21 and a magnetic pole assembly 22; shafting 40 may also be divided into smaller structural units including, but not limited to: a fixed shaft 42, a rotating shaft 41 and a bearing 43. The modular generator can be manufactured and transported by smaller structural units, and the transportation difficulty is reduced. The smallest structural units can also be assembled into an intermediate structure for transportation as long as the size or weight of the intermediate structure is less than the transportation limit.

When the modularized generator provided by the embodiment is assembled into a complete generator on the erection site of the wind generating set, the shaft system 40 can be firstly hoisted to the nacelle base 50 at the top of the tower 60 of the wind generating set, then the stator 30 and the rotor 20 which are detachably connected into a whole are hoisted to the installed shaft system 40, and the stator support 31 and the fixed shaft 42 are connected through the fixed shaft fixing member 90. The stator 30, the rotor 20, the shafting 40 and other modules can be separately hoisted, the single hoisting weight is reduced, the hoisting cost is reduced, the hoisting difficulty is reduced, the hoisting efficiency is improved, and the risk coefficient is also reduced.

A certain fit clearance exists between the rotor 20 and the stator 30 in the normal fit state, and the fit clearance affects the working effectiveness and reliability of the generator. The fitting clearance causes an unstable state such as a certain relative movement when the rotor 20 is hoisted together with the stator 30. And the first detachable connecting piece 70 fixedly connected to the stator support 31 or the rotor support 21 is used for connecting the rotor 20 and the stator 30 in a matching state into a whole, limiting the relative movement which may occur when the rotor 20 and the stator 30 are integrally hoisted, keeping the rotor 20 and the stator 30 at the current relative positions, and recovering to the accurate relative positions after hoisting is completed.

The rotor 20 and the stator 30 which are connected into a whole can be lifted by the lifting device 10 to the stator support 31 or the rotor support 21 by means of the second detachable connecting piece 80, and an independent lifting structure does not need to be manufactured on the stator support 31 or the rotor support 21, so that the stator 30 or the rotor 20 keeps the original structure, namely, the manufacturing cost of the stator 30 or the rotor 20 is reduced, the original mechanical performance of the stator 30 or the rotor 20 is not influenced, and the design cost generated for ensuring the required mechanical performance and the matching relation due to the change of the structure of the stator 30 or the rotor 20 is not required.

In some embodiments, the first detachable connecting member 70 can be welded, riveted, or integrally formed on the stator support 31, and the first detachable connecting member 70 can be a thick plate with sufficient mechanical strength. Similarly, in other embodiments, the fastening between the first detachable connector 70 and the rotor bracket 21 may be performed by welding, riveting, or integrally forming the first detachable connector 70 on the rotor bracket 21.

The inventor of this application considers that, in the hoist and mount process, through first detachable connecting piece 70 and dead axle link member 90 mutually supporting, accomplish the assembly between rotor 20, stator 30 and the shafting 40, after the assembly is accomplished, then need remove first detachable connecting piece 70 to the connection of rotor support 21 to resume accurate relative position between messenger's rotor 20 and the stator 30. Therefore, the application provides the following possible implementation modes for the modular generator:

as shown in fig. 1, the direction of the detachable connection of the first detachable connecting member 70 and the rotor bracket 21 of the embodiment of the present application is parallel to the direction of the connection of the fixed shaft fastening member 90 and the stator bracket 31; and/or the direction of the detachable connection of the first detachable connector 70 and the rotor support 21 is parallel to the direction of the connection of the fixed shaft fastening member 90 and the fixed shaft 42.

Or the direction of the detachable connection of the first detachable connecting piece 70 and the stator support 31 is parallel to the direction of the connection of the fixed shaft fixing piece 90 and the stator support 31; and/or the direction of the detachable connection of the first detachable connector 70 and the stator frame 31 is parallel to the direction of the connection of the fixed shaft fastening member 90 and the fixed shaft 42.

In this embodiment, the detachable connection direction of the first detachable connector 70 and the rotor frame 21 (or the stator frame 31) is parallel to the connection direction of the fixed shaft fastening member 90 and the stator frame 31 (or the fixed shaft 42), so that: the connection of the stator frame 31 and the rotor frame 21 by the first detachable connector 70 is released, and the stator frame 31 and the fixed shaft 42 are connected by the fixed shaft fastening member 90 at the same time. That is, the restoration of the accurate relative position between the rotor 20 and the stator 30 can be achieved in cooperation with the mounting of the rotor 20 and the stator 30 integrally to the shaft system 40.

The inventors of the present application contemplate that the first detachable connection 70 needs to be detachably connected to the rotor frame 21. To this end, the present application provides one possible implementation for the first detachable connection 70 as follows:

as shown in fig. 2, the first detachable connection 70 of the embodiment of the present application includes: a support 71 and a removable member.

One end of the supporting member 71 has a first connection surface 71a, and the first connection surface 71a is matched with and connected to the stator frame 31.

The other end of the support 71 has a second connection face 71b, and the second connection face 71b is matched with the rotor holder 21.

The detachable parts are respectively connected with the second connecting surface 71b of the supporting part 71 and the rotor bracket 21; alternatively, the detachable members are respectively connected to the first connection face 71a of the support member 71 and the stator frame 31.

In the present embodiment, the support 71 provides distance compensation for the connection of the stator frame 31 and the rotor frame 21. The first connection surface 71a of the support member 71 is used for abutting against the connection surface of the stator support 31, and the first connection surface 71a is matched with the connection surface of the stator support 31, so that the support member 71 and the stator support 31 are in surface contact, and stress concentration is reduced when a force is applied. Similarly, the second connection surface 71b of the support 71 is used for abutting against the connection surface of the rotor bracket 21, and the second connection surface 71b is matched with the connection surface of the rotor bracket 21, so that the support 71 and the rotor bracket 21 are in surface contact, and stress concentration is reduced when the support is stressed.

The detachable member is used to detachably connect the second connection surface 71b of the support member 71 to the rotor holder 21.

In some embodiments, the supporting member 71 may include a thick plate cut structure, which is uniformly distributed on the stator frame 21 and/or the rotor frame 31, and the mechanical strength thereof may be determined according to the force between the rotor frame 21 and the stator frame 31.

In some embodiments, the detachable member includes connection bolts, and the installation positions of the connection bolts may be uniformly distributed on the second connection surface 71b of the support member 71, so as to make the force applied between the support member 71 and the rotor frame 21 uniform.

Based on the same inventive concept, an embodiment of the present application provides a wind turbine generator system, and a schematic structural diagram of the wind turbine generator system is shown in fig. 3, and the wind turbine generator system includes: a tower 60, a nacelle assembly, or any of the modular generators provided in the various embodiments described above.

The nacelle bedplate 50 of the nacelle assembly is arranged on top of the tower 60.

The fixed shaft 42 in the shaft system 40 of the modular generator is fixedly connected with the nacelle base 50.

The wind turbine generator system provided in the present embodiment may be structurally divided into components including, but not limited to, a modular tower 60, a nacelle assembly, and a modular generator. Tower 60 may also be divided into smaller structural units, including but not limited to: a plurality of tower sections; the modular generator is as in the above embodiments, including but not limited to: modular stator 30, rotor 20, and shafting 40. Therefore, the wind generating set can be manufactured and transported by smaller structural units, and the transportation difficulty is reduced. The smallest structural units can also be assembled into an intermediate structure for transportation as long as the size or weight of the intermediate structure is less than the transportation limit.

For detailed principles and advantages of the modular generator in the wind turbine generator system, please refer to the above embodiments, which are not described herein again.

Based on the same inventive concept, the embodiment of the application provides a hoisting tool of a modular generator, the modular generator comprises a stator 30, a rotor 20 and a shaft system 40, the structural schematic diagram of the hoisting tool is shown in fig. 1-3 and fig. 6-10, and the hoisting tool comprises: a first detachable connector 70 and a second detachable connector 80.

The first detachable connector 70 is adapted to be detachably connected to the stator frame 31 of the stator 30, and the first detachable connector 70 is also adapted to be detachably connected to the rotor frame 21 of the rotor 20.

Second detachable connection 80 is adapted to be detachably connected to stator frame 31 and/or rotor frame 21, and second detachable connection 80 is further adapted to cooperate with lifting apparatus 10.

The hoisting tool provided by the embodiment is used for hoisting the stator 30 and the rotor 20 of the modular generator, namely, the stator 30, the rotor 20, the shafting 40 and other modules of the modular generator are hoisted separately, so that the single hoisting weight is reduced, the hoisting cost is reduced, the hoisting difficulty is reduced, the hoisting efficiency is improved, and the risk factor is also reduced. A certain fit clearance exists between the rotor 20 and the stator 30 in the normal fit state, and the fit clearance may cause an unstable state such as a certain relative movement when the rotor 20 and the stator 30 are hoisted together.

In the hoisting tool provided by this embodiment, the first detachable connecting member 70 is used to connect the rotor 20 and the stator 30 in the matching state as a whole, and can limit the relative movement that may occur when the rotor 20 and the stator 30 are integrally hoisted, so that the rotor 20 and the stator 30 maintain the current relative position, and after the hoisting is completed, the rotor 20 and the stator 30 are restored to the accurate relative position.

In the hoisting tool provided by the embodiment, the second detachable connecting member 80 is used for hoisting the stator 30 and the rotor 20 which are detachably connected into a whole by the hoisting device 10, and an independent hoisting structure does not need to be manufactured on the stator support 31 or the rotor support 21, so that the stator 30 or the rotor 20 keeps the original structure, that is, the manufacturing cost of the stator 30 or the rotor 20 is reduced, the original mechanical performance of the stator 30 or the rotor 20 is not affected, and the design cost generated for ensuring the required mechanical performance and the matching relationship does not need to be changed due to the structure change of the stator 30 or the rotor 20.

In the hoisting tool provided by the embodiment, the first detachable connecting piece 70 and the second detachable connecting piece 80 are both detachably connected, so that the hoisting tool can be repeatedly used, and the use cost is low. In addition, the hoisting tool has few components, simple structure and convenient use, carrying and storage.

In this embodiment, the detachable connection may be a bolt connection, or a bolt and nut fit connection, or a latch connection, etc.

The inventor of this application considers that, in the hoist and mount process, through first detachable connecting piece 70 and dead axle link member 90 mutually supporting, accomplish the assembly between rotor 20, stator 30 and the shafting 40, after the assembly is accomplished, then need remove first detachable connecting piece 70 to the connection of rotor support 21 to resume accurate relative position between messenger's rotor 20 and the stator 30. Therefore, the following possible implementation mode is provided for the hoisting tool in the application:

as shown in fig. 1, 3, and 7-10, the direction of the detachable connection between the first detachable connector 70 and the stator holder 31 of the embodiment of the present application is parallel to the direction of the connection between the stator holder 31 and the fixed shaft 42 of the shaft system 40.

And/or the direction of the detachable connection of the first detachable connector 70 and the rotor support 21 is parallel to the direction of the connection of the stator support 31 and the fixed shaft 42 of the shaft system 40.

By adopting the connection mode provided by the embodiment, the following can be realized: the connection of the stator frame 31 and the rotor frame 21 by the first detachable connector 70 is released, and the stator frame 31 and the fixed shaft 42 are connected by the fixed shaft fastening member 90 at the same time. That is, the restoration of the accurate relative position between the rotor 20 and the stator 30 can be achieved in cooperation with the mounting of the rotor 20 and the stator 30 integrally to the shaft system 40.

The inventor of the present application considers that the first detachable connector 70 needs to be detachably connected to the rotor holder 21 and the stator holder 31, respectively. To this end, the present application provides one possible implementation for the first detachable connection 70 as follows:

as shown in fig. 2, the first detachable connection 70 of the embodiment of the present application includes: a support 71 and a removable member.

One end of the supporting member 71 has a first connection face 71a, and the first connection face 71a is used for matching with the stator bracket 31; and/or, the other end of the support 71 has a second connection surface 71b, and the second connection surface 71b is used for matching with the rotor support 21.

The detachable member is used to connect one end of the support member 71 and the stator frame 31, respectively, and/or the detachable member is used to connect the other end of the support member 71 and the rotor frame 21, respectively.

In the present embodiment, the support 71 provides distance compensation for the connection of the stator frame 31 and the rotor frame 21. The first connection surface 71a of the support member 71 is used for abutting against the connection surface of the stator support 31, and the first connection surface 71a is matched with the connection surface of the stator support 31, so that the support member 71 and the stator support 31 are in surface contact, and stress concentration is reduced when a force is applied. Similarly, the second connection surface 71b of the support 71 is used for abutting against the connection surface of the rotor bracket 21, and the second connection surface 71b is matched with the connection surface of the rotor bracket 21, so that the support 71 and the rotor bracket 21 are in surface contact, and stress concentration is reduced when the support is stressed.

The detachable member is used to detachably connect the first connection surface 71a of the support member 71 to the stator frame 31 and the second connection surface 71b of the support member 71 to the rotor frame 21.

In some embodiments, the supporting member 71 may include a structure cut from a thick plate, and the mechanical strength thereof may be determined according to the force applied between the rotor bracket 21 and the stator bracket 31.

In some embodiments, the detachable member includes connection bolts, and the installation positions of the connection bolts may be uniformly distributed on the second connection surface 71b of the support member 71, so as to make the force applied between the support member 71 and the rotor frame 21 uniform.

The inventor of the present application considers that the control of the gap between the rotor 20 and the stator 30 to be reduced or to be restored to the normal fitting state is achieved by the detachable connection between the first detachable connector 70 and the rotor holder 21 and the stator holder 31. To this end, the present application provides one possible implementation for the first detachable connection 70 as follows:

in the first detachable connecting member 70 of the embodiment of the present application, the detachable components include, but are not limited to: and (4) oppositely pulling the screw rod.

One end of the counter screw is screw-fitted to the screw hole of the first connection face 71a of the support 71, and the other end of the counter screw is for screw-fitting to the screw hole of the stator holder 31.

And/or one end of the opposite-pulling screw is in threaded fit with a threaded hole on the second connecting surface 71b of the support 71, and the other end of the opposite-pulling screw is used for being in threaded fit with a threaded hole of the rotor bracket 21.

In the present embodiment, the counter screw may bear loads applied to both axial ends thereof, that is, the load applied to the counter screw by the first connection surface 71a of the support 71 and the stator bracket 31, or the load applied to the counter screw by the second connection surface 71b of the support 71 and the rotor bracket 21.

Meanwhile, the thread fit at the two ends of the opposite pulling screw rod can be used for adjusting the distance between the first connecting surface 71a of the supporting member 71 and the stator bracket 31 or the distance between the second connecting surface 71b of the supporting member 71 and the rotor bracket 21, so that the axial distance between the rotor 20 and the stator 30 can be controlled.

Based on the same inventive concept, the embodiment of the application provides a hoisting method of a modular generator, based on any hoisting tool provided by the embodiment, the flow schematic diagram of the hoisting method is shown in fig. 11, and the hoisting method comprises the following steps of S101-S106:

s101: the shafting 40 is hoisted to the nacelle base 50 of the wind turbine generator system.

In this step S101, the shaft system 40 is lifted to the nacelle base 50, and then the fixed shaft 42 in the shaft system 40 is fixedly connected to the nacelle base 50.

S102: the stator 30 is fitted to the rotor 20.

In step S102, the stator 30 and the rotor 20 are fitted together, and a certain fit gap is maintained between the stator 30 and the rotor 20.

S103: the stator frame 31 of the stator 30 and the rotor frame 21 of the rotor 20 are detachably coupled by the first detachable coupling member 70, so that the stator 30 is detachably coupled to the rotor 20 as a whole.

S104: the second detachable connector 80 is detachably connected to the stator frame 31.

Since the second detachable connecting member 80 is detachably connected to the stator frame 31 in step S104, the normal operation of the modular generator is not affected, so that after steps S101 to S106 are completed, the second detachable connecting member 80 may be disconnected from the stator frame 31, or the second detachable connecting member 80 may not be processed, that is, the second detachable connecting member 80 is left on the stator frame 31.

S105: the stator 30 and the rotor 20 detachably connected as a whole are hung to the shafting 40 by using the second detachable connection member 80.

S106: fixedly connecting the stator support 31 with the fixed shaft 42 of the shaft system 40, fixedly connecting the rotor support 21 with the rotating shaft 41 of the shaft system 40, and releasing the detachable connection between the first detachable connecting piece 70 and the stator support 31, and/or releasing the detachable connection between the first detachable connecting piece 70 and the rotor support 21.

By adopting the hoisting method provided by the embodiment, the stator 30, the rotor 20, the shafting 40 and other modules of the modular generator are hoisted separately, so that the single hoisting weight is reduced, the hoisting cost is reduced, the hoisting difficulty is reduced, the hoisting efficiency is improved, and the risk coefficient is also reduced.

By adopting the hoisting method provided by the embodiment, the rotor 20 and the stator 30 are connected into a whole by using the first detachable connecting piece 70, so that the relative movement which may occur during the integral hoisting of the rotor 20 and the stator 30 can be limited, the rotor 20 and the stator 30 can keep the current relative position, and after the hoisting is completed, the rotor 20 and the stator 30 can be restored to the accurate relative position.

By adopting the hoisting method provided by the embodiment, the hoisting equipment 10 is used for hoisting the stator bracket 31 or the rotor bracket 21 by using the second detachable connecting piece 80, and an independent hoisting structure is not required to be manufactured on the stator bracket 31 or the rotor bracket 21, so that the stator 30 or the rotor 20 is kept in the original structure.

In some embodiments, the hoisting method provided in fig. 11 may first perform step S101 to complete hoisting of the shaft system 40, then perform steps S102-S104 to assemble the stator 30, the rotor 20, the first detachable connecting member 70 and the second detachable connecting member 80, and then perform steps S105-S106 to complete hoisting of the rotor 20 and the stator 30 to the shaft system 40.

In some embodiments, the hoisting method provided in fig. 11 may first perform steps S102-S104, first assemble the stator 30, the rotor 20, the first detachable connecting member 70, and the second detachable connecting member 80, then perform step S101 to complete hoisting of the shaft system 40, and then perform steps S105-S106 to complete hoisting of the rotor 20 and the stator 30 to the shaft system 40.

In some embodiments, the hoisting method provided in fig. 11 performs steps S102-S104, and then steps S105-S106 in the process of performing step S101.

In the step S101, the shafting 40 is hoisted to the nacelle base 50 of the wind turbine generator system, and the flowchart of the specific method is shown in fig. 12, and may include the following steps S1011 to S1013:

s1011: the shafting 40 is hoisted.

In step S1011, the state of the axis system is as shown in fig. 4.

S1012: the fixed shaft 42 of the shafting 40 is aligned with the mounting flange of the nacelle base 50.

S1013: and fixedly connecting the aligned fixed shaft 42 with the mounting flange.

In step S1013, the state of the shafting 40 and the nacelle base 50 is as shown in fig. 5.

After steps S1011-S1013, the shaft system 40 of the wind turbine generator system is in the installed state, and is ready for subsequently hoisting the stator 30 and the rotor 20.

In some embodiments, fig. 12 provides a method of hoisting, where the fixed shaft 42 is bolted to the mounting flange interface of the nacelle base 50.

In the step S105, the second detachable connecting member 80 is used to lift the stator 30 and the rotor 20 detachably connected as a whole to the shaft system 40, and a flowchart of a specific method is shown in fig. 13, and the method may include the following steps S1051 and S1052:

s1051: the stator 30 and the rotor 20 detachably coupled as a whole are hoisted by the second detachable coupling member 80.

In step S1051, the states of the first detachable connector 70, the second detachable connector 80, the stator 30, and the rotor 20 are as shown in fig. 6.

S1052: the stator holder 31 is aligned with the fixed shaft 42 of the shafting 40, and the rotor holder 21 is aligned with the rotating shaft 41 of the shafting 40.

In step S1052, the states of the first detachable connector 70, the second detachable connector 80, the stator 30, the rotor 20, and the shafting 40 are as shown in fig. 7.

After steps S1051 and S1052, the stator frame 31 and the fixed shaft 42, and the rotor frame 21 and the rotating shaft 41 are all in a state of waiting for connection, which facilitates the implementation of the subsequent step S106.

In the step S1052, the positioning of the stator bracket 31 and the fixed shaft 42 of the shaft system 40 is performed, and a flowchart of a specific method is shown in fig. 14, which may include the following steps S10521 and S10522:

s10521: the mounting surface of the stator holder 31 is opposed to the mounting surface of the fixed shaft 42.

S10522: the relative position of the stator bracket 31 and the fixed shaft 42 is controlled so that a preset gap d is left between the mounting surface of the stator bracket 31 and the mounting surface of the fixed shaft 42.

After the steps S10521 and S10522, the mounting surface of the stator holder 31 is not only aligned with the mounting surface of the fixed shaft 42, but also a predetermined gap d is left, as shown in fig. 8. The predetermined gap d may compensate for a distance that the stator frame 31 and the rotor frame 21 relatively move when the stator 30 and the rotor 20 are restored to the exact relative positions by the integrated state of the first detachable coupling 70.

In some embodiments, fig. 14 provides a hoisting method in which the predetermined clearance d is equal to the distance that the stator frame 31 and the rotor frame 21 move relative to each other after the first detachable connector 70 is released. The distance of relative movement between the stator frame 31 and the rotor frame 21 after the first detachable connector 70 is released is the distance of the stator frame 31 and the rotor frame 21 away from each other when the stator 30 and the rotor 20 are restored to the correct relative position from the integrated state connected by the first detachable connector 70.

Thus, when the rotor bracket 21 and the rotating shaft 41 are already fixedly connected, the first detachable connecting piece 70 is released, and the stator bracket 31 and the fixed shaft 42 are fixedly connected. The installation between the stator 30, the rotor 20 and the shaft system 40 can be made safer.

In the step S106, the stator support 31 is fixedly connected to the fixed shaft 42 of the shaft system 40, the rotor support 21 is fixedly connected to the rotating shaft 41 of the shaft system 40, the detachable connection between the first detachable connection member 70 and the stator support 31 is released, and/or the detachable connection between the first detachable connection member 70 and the rotor support 21 is released, and a flowchart of the specific method is shown in fig. 15, and may include the following steps S1061 and S1062:

s1061: the rotor bracket 21 is fixedly connected with the rotating shaft 41 by a fixing part of the rotating shaft 41.

S1062: the stator support 31 and the fixed shaft 42 are fixed by the fixed shaft 42 gradually, the detachable connection between the first detachable connecting piece 70 and the stator support 31 is released gradually, and/or the detachable connection between the first detachable connecting piece 70 and the rotor support 21 is released gradually.

In this embodiment, the fixing process of the fixing member of the fixed shaft 42 to the stator support 31 and the fixed shaft 42 and the connection releasing process of the first detachable connecting member 70 to the stator support 31 and the rotor support 21 are all gradual, which is beneficial to the formation of the overlap between the fixing process and the connection releasing process, namely, the stator support 31 is connected with the fixed shaft 42 and the rotor support 21, which is beneficial to overcoming the defect of insufficient connection strength to the stator support 31 existing in the fixing process or the connection releasing process, thereby ensuring the stability of the stator 30 and the safety of the construction process.

In some embodiments, the hoisting method provided in fig. 15 may first perform step S1061 to fixedly connect the rotor bracket 21 to the rotating shaft 41, and then perform step S1062 to release the first detachable connecting member 70 from the position between the stator bracket 31 and the rotor bracket 21, and to fixedly connect the stator bracket 31 to the fixed shaft 42.

In some embodiments, the hoisting method provided in fig. 15 may first perform step S1062, release the first detachable connection member 70 from the position between the stator frame 31 and the rotor frame 21, and fixedly connect the stator frame 31 to the fixed shaft 42, and then perform step S1061, so that the rotor frame 21 is fixedly connected to the rotating shaft 41.

In some embodiments, the hoisting method provided in fig. 15 may perform steps S1061 and S1062 at the same time.

In the step S1062, the stator bracket 31 is gradually and fixedly connected to the fixed shaft 42 by the fixed member of the fixed shaft 42, and the detachable connection between the first detachable connector 70 and the stator bracket 31 is gradually released, and/or the detachable connection between the first detachable connector 70 and the rotor bracket 21 is gradually released, and the specific method may include the following steps S10621 or S10622:

s10621: the detachable connection between the first detachable connecting piece 70 and the stator support 31 is loosened for multiple times, and/or the detachable connection between the first detachable connecting piece 70 and the rotor support 21 is loosened for multiple times, and after each loosening, the fixed connection of the fixed shaft fixing piece 90 to the stator support 31 and/or the fixed shaft 42 is correspondingly tightened for one time until the preset gap d is eliminated.

After the step S10621, as shown in fig. 9 and 10, the rotor bracket 21 is completely coupled to the rotating shaft 41, the stator bracket 31 is completely coupled to the fixed shaft 42, and the predetermined gap d between the stator bracket 31 and the fixed shaft 42 is eliminated, and the first detachable coupling member 70 is also released from the detachable coupling of the rotor bracket.

In step S10621, assuming that the preset gap d has 10mm (millimeters), take 2 relaxations as an example:

for the first time, the detachable connection of the first detachable connecting piece 70 to the stator support 31 and the rotor support 21 is loosened by 5mm, and the fixed connection of the fixed shaft fixing piece 90 to the stator support 31 and/or the fixed shaft 42 is correspondingly tightened by 5 mm. At this moment, the detachable connection of the first detachable connecting piece 70 to the stator support 31 and the rotor support 21 and the fixed connection of the fixed shaft fixing piece 90 to the stator support 31 and/or the fixed shaft 42 are both in a non-complete connection state, the connection strength of the two is lower than the respective complete connection state, but the connection of the two non-complete connection states simultaneously acts on the stator support 31, so that sufficient connection strength can be provided for the stator 30, and the stability and the safety of the stator 30 are ensured.

And secondly, the detachable connection of the first detachable connecting piece 70 to the stator support 31 and the rotor support 21 is released by 5mm, namely, the detachable connection of the first detachable connecting piece 70 to the stator support 31 and the rotor support 21 is released. And correspondingly fixedly connecting the fixed shaft fixedly connecting piece 90 with the stator support 31 and/or the fixed shaft 42, and then tightening the fixed shaft fixedly connecting piece by 5mm, namely, fixedly connecting the fixed shaft fixedly connecting piece 90 with the stator support 31 and/or the fixed shaft 42.

S10622: continuously loosening the detachable connection between the first detachable connecting piece 70 and the stator support 31, and/or loosening the detachable connection between the first detachable connecting piece 70 and the rotor support 21 for multiple times, and synchronously continuously tightening the fixed connection of the fixed shaft fixing piece 90 to the stator support 31 and/or the fixed shaft 42 until the preset gap d is eliminated.

The principle of the step S10622 is the same as that of the step S10621, except that the first detachable connecting member 70 is loosened to detachably connect the stator 30 and the rotor 20, and the first detachable connecting member 90 is tightened to fixedly connect the stator bracket 31 and/or the fixed shaft 42, which are continuous, i.e. the process is more linear, the connection strength obtained by the stator 30 is more stable, the state of the stator 30 is more stable, and the construction process is safer.

On the basis of the embodiment of the hoisting method, the embodiment of the present application provides a second possible implementation manner, and the flow diagram of the method is shown in fig. 16, and includes the following steps S201 to S207:

s201: the shafting 40 is hoisted to the nacelle base 50 of the wind turbine generator system.

S202: the stator 30 is fitted to the rotor 20.

S203: the stator frame 31 of the stator 30 and the rotor frame 21 of the rotor 20 are detachably coupled by the first detachable coupling member 70, so that the stator 30 is detachably coupled to the rotor 20 as a whole.

S204: the second detachable coupling 80 is detachably coupled to the rotor frame 21.

S205: the stator 30 and the rotor 20 detachably connected as a whole are hung to the shafting 40 by using the second detachable connection member 80.

S206: fixedly connecting the stator support 31 with the fixed shaft 42 of the shaft system 40, fixedly connecting the rotor support 21 with the rotating shaft 41 of the shaft system 40, and releasing the detachable connection between the first detachable connecting piece 70 and the stator support 31, and/or releasing the detachable connection between the first detachable connecting piece 70 and the rotor support 21.

S207: the second detachable coupling member 80 is released from the detachable coupling with the rotor frame 21.

Since the detachable connection of the second detachable connection member 80 to the rotor frame 21 in step S204 may affect the normal operation of the modular generator, after steps S201-S206 are completed, step S207 is required to be performed to release the connection relationship between the second detachable connection member 80 and the stator frame 31, so as to ensure the normal operation of the modular generator.

In some embodiments, the hoisting method provided in fig. 16 may perform step S206 first, and then perform step S207.

In some embodiments, the hoisting method provided in fig. 16 may perform step S207 first, and then perform step S206.

In some embodiments, the hoisting method provided in fig. 16 may perform step S206 and step S207 simultaneously.

The achievable sequence of steps S201 to S206 is the same as that of steps S101 to S106 in the foregoing embodiment, and is not described herein again.

By applying the embodiment of the application, at least the following beneficial effects can be realized:

1. by adopting the modularized generator or the wind generating set provided by the embodiment of the application, the stator and the rotor 20 and other modules such as the shafting 40 can be separately hoisted, the single hoisting weight is reduced, the hoisting cost is reduced, the hoisting difficulty is reduced, the hoisting efficiency is improved, and the danger coefficient is also reduced.

2. Adopt the modularization generator or the wind generating set that this application embodiment provided, utilize and link firmly in stator support 31 or link firmly the first detachable connection spare 70 on the rotor support to be connected rotor 20 and stator 30 as an organic whole, relative movement that probably takes place when can restricting rotor and stator integral hoisting keeps present relative position between stator 30 and the rotor 20, and after the hoist and mount was accomplished, with stator 30 and rotor 20 resume to accurate relative position.

3. By adopting the modular generator or wind generating set provided by the embodiment of the application, the hoisting of the hoisting equipment 10 to the stator support 31 or the hoisting of the rotor support 21 can be realized by means of the second detachable connecting piece 80, an independent hoisting structure does not need to be manufactured on the stator support 31 or the rotor support 21, the stator 30 or the rotor 20 is enabled to keep the original structure, namely, the manufacturing cost of the stator 30 or the rotor 20 is reduced, the original mechanical performance of the stator 30 or the rotor 20 is not influenced, and the design cost generated for ensuring the required mechanical performance and the matching relationship does not need to be caused by the structural change of the stator 30 or the rotor 20.

4. By adopting the hoisting tool or hoisting method provided by the embodiment of the application, the stator 30, the rotor 20, the shafting 40 and other modules of the modularized generator are hoisted separately, so that the single hoisting weight is reduced, the hoisting cost is reduced, the hoisting difficulty is reduced, the hoisting efficiency is improved, and the risk coefficient is also reduced.

5. By adopting the hoisting tool or hoisting method provided by the embodiment of the application, the rotor 20 and the stator 30 are connected into a whole by utilizing the first detachable connecting piece 70, the relative movement which may occur during the integral hoisting of the rotor 20 and the stator 30 can be limited, the current relative position between the stator 30 and the rotor 20 is maintained, and after the hoisting is finished, the stator 30 and the rotor 20 are restored to the accurate relative position.

6. By adopting the hoisting tool or hoisting method provided by the embodiment of the application, the hoisting equipment 10 is used for hoisting the stator support 31 or the rotor support 21 by utilizing the second detachable connecting piece 80, and an independent hoisting structure is not required to be manufactured on the stator support 31 or the rotor support 21, so that the stator 30 or the rotor 20 is kept in an original structure.

7. By adopting the hoisting tool or hoisting method provided by the embodiment of the application, the hoisting tool comprising the first detachable connecting piece 70 and the second detachable connecting piece 80 is simple in structure, convenient to use, transport and store, low in cost and high in popularization, and can be repeatedly used.

Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.