阅读说明：本技术 一种模块化高温超导风力发电机及其装配方法 (Modular high-temperature superconducting wind driven generator and assembling method thereof ) 是由 周勇 熊琪 徐鸿 董琦 于 2021-09-10 设计创作，主要内容包括：本发明涉及一种模块化高温超导风力发电机,包括模块化定子、模块化转子、低温制冷系统、冷媒传输耦合装置、盘式集电环、电刷及轴承等,还公开了其装配方法,本发明在降低定子真空压力浸渍降、运输以及维修维护难度,提高整机可靠性以及降低定子温升等方面均有较大程度的创新,特别适合在高温超导电机中使用,尤其适合在大功率、低转速、结构紧凑、运行成本低等要求的高温超导直驱风力发电机中运用。(The invention relates to a modularized high-temperature superconducting wind driven generator, which comprises a modularized stator, a modularized rotor, a low-temperature refrigerating system, a refrigerant transmission coupling device, a disc type collecting ring, an electric brush, a bearing and the like, and also discloses an assembly method of the modularized high-temperature superconducting wind driven generator.)

1. A modular high-temperature superconducting wind driven generator is characterized in that: the device comprises a modular stator (1), a disc type collecting ring (2), an electric brush (3), a modular rotor (4), a refrigerant transmission coupling device (6) and a low-temperature refrigeration system (7);

the modularized stator (1) consists of a sealing cylinder (14), 2 driving end plates (11) and 1 non-driving end plate (15) which are connected to two sides of the sealing cylinder (14) and M modularized armatures (12) which are assembled into a whole with the sealing cylinder (14), wherein M is more than or equal to 3, adjacent modularized armatures (12) are assembled into a whole through a spigot and a pin (13), each modularized armature (12) consists of an iron core laminated unit (124) with a ventilation groove, a slot wedge and a concentric stator coil, wherein the iron core laminated unit (124) is formed by laminating a plurality of iron cores, a bearing seat extending towards the driving end plate (11) is arranged in the center of the non-driving end plate (15), and a bearing (5) is arranged on the bearing seat;

the modularized rotor (4) is composed of a rotating shaft (41) arranged on a bearing (5), a refrigerator refrigerant transmission pipeline (42) arranged on the rotating shaft (41) and N modularized superconducting magnet groups (44), N is larger than or equal to 2, a current inlet lead (45), a current return lead (46) and N cold heads (43) are respectively arranged on the refrigerator refrigerant transmission pipeline (42), the modularized superconducting magnet groups (44) are composed of P +1 superconducting magnet boxes uniformly arranged on a barrel body of the rotating shaft (41), P current lead connecting pipes and P refrigerant connecting pipes for connecting the superconducting magnet boxes, and P is larger than or equal to 2;

the disc type collecting ring (2) is fixedly arranged on a cylinder end plate of the rotating shaft (41), the electric brush (3) is fixedly arranged on a non-driving end plate (15), the disc type collecting ring (2) is in end face sliding contact with the electric brush (3), the disc type collecting ring (2) is connected with a current inlet lead (45) and a current return lead (46), and the electric brush (3) is connected with an external magnet current source;

the low-temperature refrigeration system (7) is fixedly arranged on the non-driving end plate (15) through a support and is connected with a refrigerant transmission pipeline (42) of the refrigerator through a refrigerant transmission coupling device (6).

2. A modular high temperature superconducting wind generator according to claim 1, wherein M =4 or 5, N =5, and P = 4.

3. A modular high temperature superconducting wind generator according to claim 2, wherein the concentric stator coils are bar-shaped and comprise a first concentric stator coil (121) with horizontal middle and end portions, a second concentric stator coil (122) with horizontal middle and end portions and inclined ends, and a third concentric stator coil (123) with horizontal middle and end portions.

4. A modular hts wind turbine according to claim 1, 2 or 3 characterized in that the drive end endplate (11), the modular armature (12) and the non-drive end endplate (15) are assembled in one piece by means of a spigot, a sealing washer, a pin (13) and a bolt.

5. A modular hts wind turbine according to claim 1, 2 or 3, characterized by the fact that the non-drive end plate (15) is made of metal casting.

6. A modular hts wind turbine according to claim 1, 2 or 3, characterized by the fact that the non-drive end plate (15) is a forging.

7. A modular hts wind turbine according to claim 1, 2 or 3 characterized in that the modular stator (1) and the sealing cartridge (14) are assembled in one piece with the modular armature (12) by means of sealing gaskets and bolts.

8. A method of assembling a modular hts wind turbine as claimed in claim 1, characterized by the steps of:

step 1, respectively machining a driving end plate (11), an iron core laminating unit (124), a first concentric stator coil (121), a second concentric stator coil (122), a third concentric stator coil (123), a non-driving end plate (15), a pin (13) and a brush (3), and simultaneously completing the assembly of a modularized rotor (4);

step 2, sequentially placing a first concentric stator coil (121), a second concentric stator coil (122) and a third concentric stator coil (123) into an iron core laminating unit (124), driving into a slot wedge, and assembling into a modular armature (12);

step 2, assembling M modular armatures (12) into a whole through a spigot and a pin (13);

step 3, assembling the modularized armature (12) with the non-drive end plate (15) through a spigot, a sealing washer, a pin (13) and a bolt by adopting a vertical installation mode;

step 4, mounting the bearing (5) on a bearing seat of a non-driving end plate (15);

step 5, mounting and fixing the modularized rotor (4) and the bearing (5) into a whole in a vertical mounting mode;

step 6, installing an electric brush (3);

step 7, assembling 2 driving end plates (11) with the modular armature (12) through a spigot, a sealing washer, a pin (13) and a bolt in a vertical installation mode;

step 8, assembling the sealing cylinder (14) and the modular armature (12) into a whole through a sealing washer and a bolt;

and 9, mounting and fixing the low-temperature refrigerating system (7) on the non-driving end plate (15), and connecting the low-temperature refrigerating system with a refrigerant transmission pipeline (42) of the refrigerator through a refrigerant transmission coupling device (6) to form the modular high-temperature superconducting wind driven generator.

Technical Field

The invention belongs to the field of superconducting application, and particularly relates to a modular high-temperature superconducting wind driven generator and an assembling method thereof.

Background

Since the invention of high-temperature superconducting materials in 1986, international research work on superconducting strong current application mainly focuses on the development of high-temperature superconducting propulsion motors for ships. Because the superconducting material has the zero resistance effect that the resistance is changed into zero in a low-temperature environment, the superconducting magnet developed by the rotor winding by adopting the superconducting material has no power loss, and the efficiency of the motor is further greatly improved. In addition, compared with the conventional copper winding, the superconducting magnet can bear higher current under a strong magnetic field, so that the superconducting motor has the advantages of small volume, light weight, high power density, high torque density and the like.

In recent years, due to the increasing shortage of energy and the increasing strengthening of the ocean strategic consciousness of countries in the world, the reasonable and effective utilization of ocean energy is increasingly important. In order to fully utilize high-quality ocean wind energy and reduce the transmission distance of electric energy, a plurality of researchers are dedicated to developing a feasible and high-reliability single-machine high-capacity offshore high-temperature superconducting wind driven generator. With the increase of the capacity of a single machine, the power reaches 10MW level, the high-temperature superconducting wind driven generator has remarkable advantages of volume, weight and efficiency, and the weight on a tower including the wind driven generator, a hub, a gear box and the like can be greatly reduced. And then reduce the degree of difficulty of unit transportation, hoist and mount and design, reduce system construction and running cost and improve system reliability and security.

In the prior art, various high-temperature superconducting wind driven generator structures exist. Most of the components relate to some component structures, and few of the components relate to the whole structure with a modular design. For a large-capacity high-temperature superconducting wind driven generator, if an integral stator is still adopted, on one hand, the vacuum pressure impregnation of the large-diameter stator is difficult, on the other hand, the transportation of the generator is also difficult, and the manufacturing cost of the generator is increased. In addition, the existing high-temperature superconducting motor rotor mostly adopts an integral vacuum structure, namely, the outer surface of the rotor is a smooth round surface. For the air-cooled stator, the smooth outer surface of the rotor dewar is not easy to form an air path, great difficulty is brought to the cooling of the stator, and the manufacturing cost of the whole machine is further increased.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a modularized high-temperature superconducting wind driven generator which can meet the actual working requirement from the aspect of a modularized structure.

The technical scheme adopted by the invention for solving the technical problems is as follows: a modularized high-temperature superconducting wind driven generator comprises a modularized stator, a disc type collecting ring, an electric brush, a modularized rotor, a refrigerant transmission coupling device and a low-temperature refrigerating system; the modularized stator mainly comprises a sealing cylinder, 2 driving end plates and 1 non-driving end plate which are connected to two sides of the sealing cylinder, and M (M is more than or equal to 3) modularized armatures which are assembled into a whole with the sealing cylinder through sealing washers and bolts, wherein adjacent modularized armatures are assembled into a whole through rabbets and pins, each modularized armature comprises an iron core laminating unit with a ventilation channel, a slot wedge and three concentric stator coils in different shapes, the iron core laminating unit is formed by laminating a plurality of iron core punching sheets, a bearing seat extending towards the driving end plate is arranged in the center of the non-driving end plate, and a bearing is arranged on the bearing seat; the modularized superconducting magnet comprises a modularized rotor and a plurality of modularized superconducting magnet groups, wherein the modularized rotor consists of a rotating shaft arranged on a bearing, a refrigerating machine refrigerant transmission pipeline arranged on the rotating shaft and N modularized superconducting magnet groups (N is more than or equal to 2), the refrigerating machine refrigerant transmission pipeline is respectively provided with a current inlet lead, a current return lead and N cold heads, and the modularized superconducting magnet group (44) consists of P +1 superconducting magnet boxes uniformly arranged on a rotating shaft cylinder body, P current lead connecting pipes and P refrigerant connecting pipes which are connected with the superconducting magnet boxes; the disc type collecting ring is fixedly arranged on an end plate of the rotating shaft cylinder, the electric brush is fixedly arranged on a non-driving end plate, the disc type collecting ring is in sliding contact with the electric brush through an end face, the disc type collecting ring is connected with a current inlet lead and a current return lead, and the electric brush is connected with an external magnet current source; the low-temperature refrigeration system is fixedly arranged on the non-driving end plate through a support and is connected with a refrigerant transmission pipeline of the refrigerator through a refrigerant transmission coupling device.

The modularized high-temperature superconducting wind driven generator is characterized in that M =4 or 5, N =5 and P = 4.

The concentric stator coils of the modularized high-temperature superconducting wind driven generator are strip-shaped and comprise a first concentric stator coil with the horizontal middle part and the horizontal end part, a second concentric stator coil with the horizontal middle part and the inclined end part and a third concentric stator coil with the horizontal middle part and the vertical end part.

According to the modularized high-temperature superconducting wind driven generator, a driving end plate, a modularized armature and a non-driving end plate are assembled into a whole through a seam allowance, a sealing washer, a pin and a bolt.

The non-driving end plate of the modularized high-temperature superconducting wind driven generator is a forged piece or is formed by metal casting.

The modularized high-temperature superconducting wind driven generator is characterized in that a modularized stator and a sealing cylinder are assembled with a modularized armature into a whole through a sealing gasket and a bolt.

The invention also aims to provide an assembly method of the modularized high-temperature superconducting wind driven generator, which comprises the following steps:

step 1, respectively machining a driving end plate, an iron core laminating unit, three concentric stator coils, a non-driving end plate, a pin, a sealing plate, an electric brush and other parts, and simultaneously assembling to complete a modular rotor;

step 2, sequentially placing a first concentric stator coil, a second concentric stator coil and a third concentric stator coil into the iron core laminating unit, and driving into a slot wedge to assemble a modular armature;

step 3, assembling M modular armatures into a whole through the spigot and the pin;

step 4, assembling the integrally assembled modular armature with the non-driving end plate through a spigot, a sealing washer, a pin and a bolt in a vertical installation mode;

step 5, mounting the bearing on a bearing seat of a non-drive end plate;

step 6, mounting and fixing the modular rotor and the bearing into a whole in a vertical mounting mode;

step 7, installing an electric brush;

step 8, assembling the two driving end plates and the integrally assembled modular armature together through a spigot, a sealing washer, a pin and a bolt by adopting a vertical installation mode;

step 9, assembling the sealing cylinder and the modularized armature into a whole through a sealing washer and a bolt;

and step 10, mounting and fixing the low-temperature refrigeration system on a non-drive end plate of the modular stator, and connecting the low-temperature refrigeration system with a refrigerant transmission pipeline of the refrigerator through a refrigerant transmission coupling device to form the modular high-temperature superconducting wind driven generator.

The invention has the beneficial effects that: the stator of the high-temperature superconducting wind driven generator generally adopts an air-cooled cooling mode on the premise of higher cost and simple maintenance, and when the superconducting motor rotor adopts a scheme that all superconducting magnets share one vacuum container, the outer surface of the superconducting motor rotor is a smooth round surface, and an effective air path cannot be formed only by virtue of an air gap; when the scheme of the modularized superconducting magnet group is adopted by the superconducting motor rotor, a larger air path can be formed in the gap between the magnet groups, so that the stator is cooled conveniently, and the temperature rise of the stator is reduced; in addition, the modularized stator of the motor reduces the difficulty of vacuum pressure impregnation of the large-diameter stator on the one hand, reduces the difficulty of transportation of the generator on the other hand, and reduces the manufacturing cost of the generator.

The invention has great innovation in the aspects of reducing the vacuum pressure dipping drop, transportation and maintenance difficulty of the stator, improving the reliability of the whole machine, reducing the temperature rise of the stator and the like, is particularly suitable for being used in a high-temperature superconducting motor, and is particularly suitable for being used in a high-temperature superconducting direct-driven wind driven generator with the requirements of high power, low rotating speed, compact structure, low operation cost and the like.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a modular stator of the present invention;

FIG. 3 is a schematic structural view of a modular armature of the present invention;

fig. 4 is a schematic structural view of a first concentric stator coil according to the present invention;

fig. 5 is a schematic structural view of a second concentric stator coil according to the present invention;

fig. 6 is a schematic structural view of a third concentric stator coil according to the present invention;

FIG. 7 is a schematic view of the construction of the present invention assembled into an integral modular armature;

FIG. 8 is a schematic structural view of a modular rotor of the present invention;

FIG. 9 is a schematic view of the mounting of the modular armature to the non-driving endplate of the present invention;

FIG. 10 is a schematic structural view of the present invention illustrating the installation of a modular rotor;

FIG. 11 is a schematic view of the structure of the present invention for mounting the drive end plate;

fig. 12 is a schematic structural view of the sealing cylinder of the present invention.

The figures are numbered: 1-modular stator, 11-drive end plate, 12-modular armature, 121-first concentric stator coil, 122-second concentric stator coil, 123-third concentric stator coil, 124-iron core lamination unit, 13-pin, 14-sealing cylinder, 15-non-drive end plate, 2-disc collecting ring, 3-electric brush, 4-modular rotor, 41-rotating shaft, 42-refrigerator refrigerant transmission pipeline, 43-cold head, 44-modular superconducting magnet group, 45-current lead-in wire, 46-current lead-back wire, 5-bearing, 6-refrigerant transmission coupling device, and 7-cryogenic refrigeration system.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The invention provides a complete machine scheme of a high-temperature superconducting wind driven generator from the perspective of a modular stator, a modular rotor and an air path. It should be noted that the inventor's patent "a high temperature superconducting motor rotor and its assembling method" (patent No. ZL 202011187594.3) invented in 2020 has given a modular rotor structure. On the basis of the patent, the invention combines a modularized stator to provide an offshore direct-drive high-temperature superconducting wind driven generator which is suitable for requirements of high power, low rotating speed, compact structure, high power density, high torque density and the like.

Example 1

As shown in fig. 1, the modularized high-temperature superconducting wind turbine generator disclosed by the invention is composed of a modularized stator 1, a disc-type collecting ring 2, an electric brush 3, a modularized rotor 4, a bearing 5, a refrigerant transmission coupling device 6 and a low-temperature refrigeration system 7.

As shown in fig. 2, the modular stator 1 consists essentially of a drive end plate 11, 4 modular armatures 12, a non-drive end plate 15, a pin 13 and a sealed cylinder 14; the non-driving end plate 15 is made of cast iron through machining; the sealing cylinder 14 is assembled in one piece with the 4 modular armatures 12 by means of sealing gaskets and bolts.

As shown in fig. 3, the modular armature 12 is composed of an iron core lamination unit 124 having ventilation grooves, a concentric stator coil and a slot wedge, wherein the iron core lamination unit 124 is formed by laminating a plurality of iron core laminations, the concentric stator coil is strip-shaped and has three forms, the middle part and the end part of the first concentric stator coil 121 shown in fig. 4 are horizontal, the horizontal end part of the middle part of the second concentric stator coil 122 shown in fig. 5 is inclined, and the horizontal end part of the middle part of the third concentric stator coil 123 shown in fig. 6 is vertical upward.

The 4 modular armatures 12 are assembled into a whole through the spigots and the pins 13, and the structure of the modular armatures 12 after being assembled into a whole is shown in figure 7.

As shown in fig. 8, the modular rotor 4 includes a rotating shaft 41, a refrigerator refrigerant transmission line 42, 5 cold heads 43, 5 modular superconducting magnet groups 44, a current lead 45, a current return lead 46, and the like. The modular superconducting magnet unit 44 is composed of 4 superconducting magnet boxes uniformly arranged on the barrel of the rotating shaft 41, and 3 current lead connecting pipes and 3 coolant connecting pipes for connecting the superconducting magnet boxes.

The disc type collecting ring 2 is installed and fixed on a cylinder end plate of the rotor rotating shaft 41, the electric brush 3 is installed and fixed on the non-driving end plate 14, end face sliding contact is formed between the disc type collecting ring 2 and the electric brush 3, the disc type collecting ring 2 is connected with a current inlet lead 45 and a current return lead 46, and the electric brush 3 is connected with an external magnet current source.

The low-temperature refrigerating system 7 is fixedly arranged on the stator non-driving end plate 14 through a bracket and is connected with a refrigerating machine refrigerant transmission pipeline 42 through a refrigerant transmission coupling device 6.

The invention is suitable for the application occasions of superconducting motors, and is particularly suitable for being used as an offshore direct-drive high-temperature superconducting wind driven generator with the requirements of high power, low rotating speed, compact structure, high power density, high torque density and the like.

Example 2

The embodiment is an assembling method of a modularized high-temperature superconducting wind driven generator, which comprises the following steps:

step 1, the driving end plate 11, the iron core laminating unit 124, the first concentric stator coil 121, the second concentric stator coil 122, the third concentric stator coil 123, the non-driving end plate 15, the pin 13, the sealing plate 14, the brush 3 and other components are respectively machined, and the modular rotor 4 is assembled.

And 2, sequentially placing the first concentric stator coil 121, the second concentric stator coil 122 and the third concentric stator coil 123 into the iron core laminating unit 124, driving the iron core laminating unit into a slot wedge, and assembling the modular armature 12.

And 3, assembling the M modular armatures 12 into a whole through the spigot and the pin 13 by adopting a tool.

Step 4, assembling the integrally assembled modular armature 12 with the non-drive end plate 15 through the spigot, sealing washer, pin 13 and bolt in a vertical installation manner, as shown in fig. 9.

Step 5, mounting the bearing 5 on the bearing seat of the non-drive end plate 15.

And 6, mounting and fixing the modular rotor 4 and the bearing 5 into a whole in a vertical mounting mode, as shown in fig. 10.

And 7, mounting the electric brush 3.

Step 8, assembling the two driving end plates 11 together with the integrally assembled modular armature 12 through the seam allowance, the sealing washer, the pin 13 and the bolt by adopting a vertical installation mode, as shown in fig. 11.

Step 9, the sealing cylinder 14 is assembled with the modular armature 12 into a whole by sealing gaskets and bolts, as shown in fig. 12.

And step 10, installing and fixing the low-temperature refrigerating system 7 on the non-driving end plate 15, and connecting the low-temperature refrigerating system with a refrigerant transmission pipeline 42 of the refrigerator through a refrigerant transmission coupling device 6 to form the modular high-temperature superconducting wind driven generator.

Example 3

The difference from embodiment 1 is that the number of the modular armatures 12 is 5.

Example 4

The difference from embodiment 1 is that the non-drive end plate is a forging.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.