阅读说明：本技术 一种双层壳体内循环充油式潜水电机 (Double-layer shell internal circulation oil-filled submersible motor ) 是由 付敏 王文亮 马春旭 于 2019-10-21 设计创作，主要内容包括：一种双层壳体内循环充油式潜水电机,本发明涉及潜水电机技术领域,具体包括全封闭的外壳、同轴固定于外壳内的内壳和内壳上有孔通往外壳的内腔,外壳前后两端分别设置前端盖和后端盖,前端盖上设置前止推轴承,后端盖上设置后止推轴承,前止推轴承和后止推轴承之间设置电机转轴,电机转轴设置在电机内壳内且一端贯穿前端盖,电机转轴中部固定有转子,电机内壳内设置有定子,定子设置在转子外端且与转子位置对应,电机内设置有散热模块,驱动液压油在电机内壳和外壳之间循环流动；本发明通过采用电机双层壳结构和电机散热模块,不需要装设额外的动力装置,实现了电机内液压油的循环流动,增强了电机散热能力。(The invention relates to a double-layer shell internal circulation oil-filled submersible motor, which relates to the technical field of submersible motors and specifically comprises a totally-enclosed shell, an inner shell coaxially fixed in the shell and an inner cavity which is provided with a hole and leads to the shell, wherein the front end and the rear end of the shell are respectively provided with a front end cover and a rear end cover; according to the invention, by adopting the motor double-shell structure and the motor heat dissipation module, an additional power device is not required to be arranged, the circulation flow of hydraulic oil in the motor is realized, and the heat dissipation capability of the motor is enhanced.)

1. The utility model provides a two-layer housing internal circulation oil charge formula dive motor which characterized in that: the heat dissipation module comprises a totally closed outer shell, an inner shell coaxially fixed in the outer shell, an inner cavity with a hole leading to the outer shell, a heat dissipation module, a front end cover, a rear end cover, a front thrust bearing, a rear thrust bearing, a motor rotating shaft, a stator and a rotor, wherein the heat dissipation module is formed by a motor stator and rotor air gap, an end air gap and the inner cavity leading to the outer shell from the inner shell hole; the motor comprises a motor shell, and is characterized in that a front end cover and a rear end cover are respectively arranged at the front end and the rear end of the motor shell, a front thrust bearing is arranged on the front end cover, a rear thrust bearing is arranged on the rear end cover, a motor rotating shaft is arranged between the front thrust bearing and the rear thrust bearing, the motor rotating shaft is arranged in the motor inner shell, one end of the motor rotating shaft penetrates through the front end cover, a rotor is fixed in the middle of the motor rotating shaft, a stator is arranged in the motor inner shell, the stator is arranged at the outer end of the rotor and corresponds to the position of the rotor, a heat dissipation module is arranged in the motor, and hydraulic oil of.

2. The submersible motor according to claim 1, wherein: the front part of the motor outer shell is directly fixed with the front part of the inner shell, and the inner wall of the outer shell is fixed with the rear part of the inner shell through a fan-shaped positioning block.

3. The submersible motor according to claim 1, wherein: and a pressure regulating bag is arranged on the inner wall of the rear end cover of the motor shell.

4. The submersible motor according to claim 1, wherein: and a water seal is arranged at the joint of the motor rotating shaft and the front end cover.

5. The submersible motor according to claim 1, wherein: and hydraulic oil is filled in the motor heat dissipation module.

6. The submersible motor according to claim 1, wherein: the motor heat radiation module is a cooling oil path which is arranged between the air gaps of the motor stator and the motor rotor and is formed by connecting a plurality of hollow gaskets to pass through the inner shell hole and form with the inner cavity of the motor shell.

7. The submersible motor according to claim 6, wherein: and the gasket in the motor heat dissipation module is integrated by adopting a magnesium-aluminum alloy material.

8. The submersible motor according to claim 6, wherein: the thickness of each gasket is 0.4 mm-1.5 mm, the length and the width are 4 mm-5 mm, the thickness of a channel connected with each gasket is the same as that of the gasket, and the length and the width are 2.5 mm-3.5 mm.

9. The submersible motor according to claim 6, wherein: hydraulic oil in the motor heat dissipation module exchanges heat with the stator and the rotor through gasket integration, and based on the principle of expansion with heat and contraction with cold of a gasket integrated material, the hydraulic oil is driven to pass through the inner shell hole from the rear end of the motor inner shell, pass through an air gap between the stator and the rotor and an end air gap, enter the inner cavity of the outer shell, exchange with the external environment for heat dissipation, and then flow back to the rear end of the motor inner shell through the inner shell hole to form a circulating cooling oil path.

Technical Field

The invention relates to the technical field of submersible motors, in particular to a submersible motor with a double-layer shell internally circulating and oil-filled.

Background

The submersible motor works in a deep water environment, and the external environment pressure is balanced by using the mode of filling oil in the motor. As the submersible motor is used as a main or even only power device of deep water equipment, the output power density of the motor is high, so that the motor can generate a large amount of heat during normal operation and work, the heat generated by the motor winding and the permanent magnet cannot be dissipated in time only in the process of heat conduction through an oily medium in an air gap, the problem of untimely and insufficient heat dissipation exists, the local overheating of the motor is easily caused, the service life of the motor is shortened, and the motor is even burnt.

Disclosure of Invention

The invention overcomes the defects of the prior art and provides the submersible motor with the double-layer shell internally circulated with oil, the heat dissipation module is arranged in the motor to circularly dissipate the heat of the hydraulic oil in the motor, the running temperature rise of the stator part and the rotor part of the motor is reduced, and the service life of the motor is prolonged.

The technical scheme of the invention is as follows:

A double-layer shell internal circulation submersible motor comprises a totally-enclosed shell, an inner shell coaxially fixed in the shell, a heat dissipation module, a front end cover, a rear end cover, a front thrust bearing, a rear thrust bearing, a motor rotating shaft, a stator and a rotor, wherein holes in the inner shell lead to an inner cavity of the shell; the motor comprises a motor shell, and is characterized in that a front end cover and a rear end cover are respectively arranged at the front end and the rear end of the motor shell, a front thrust bearing is arranged on the front end cover, a rear thrust bearing is arranged on the rear end cover, a motor rotating shaft is arranged between the front thrust bearing and the rear thrust bearing, the motor rotating shaft is arranged in the motor inner shell, one end of the motor rotating shaft penetrates through the front end cover, a rotor is fixed in the middle of the motor rotating shaft, a stator is arranged in the motor inner shell, the stator is arranged at the outer end of the rotor and corresponds to the position of the rotor, a heat dissipation module is arranged in the motor, and hydraulic oil of.

Specifically, the front part of the motor outer shell is directly fixed with the front part of the inner shell, and the inner wall of the outer shell is fixed with the rear part of the inner shell through a fan-shaped positioning block.

Specifically, a pressure regulating bag is arranged on the inner wall of the rear end cover of the motor shell.

Specifically, a water seal is arranged at the joint of the motor rotating shaft and the front end cover.

Specifically, hydraulic oil is filled in the motor radiating module.

Specifically, the motor heat dissipation module is a cooling oil path which is arranged between the air gaps of the motor stator and the motor rotor and formed by connecting a plurality of hollow gaskets, and penetrates through the inner shell hole to form together with the inner cavity of the motor shell.

Furthermore, the gasket in the motor heat dissipation module is integrated to adopt magnesium aluminum alloy material.

Furthermore, the thickness of each gasket is 0.4 mm-1.5 mm, the length and the width of each gasket are 4 mm-5 mm, the thickness of a channel connected with each gasket is the same as that of the gasket, and the length and the width of each gasket are 2.5 mm-3.5 mm.

Furthermore, hydraulic oil in the motor heat dissipation module exchanges heat with the stator and the rotor through gasket integration, and based on the principle of expansion with heat and contraction with cold of the gasket integrated material, the hydraulic oil is driven to pass through the inner shell hole from the rear end of the motor inner shell, pass through an air gap between the stator and the rotor and an end air gap, enter the inner cavity of the outer shell, exchange with the external environment for heat dissipation, and then flow back to the rear end of the motor inner shell through the inner shell hole to form a circulating cooling oil way.

Compared with the prior art, the invention has the following beneficial effects:

The double-shell motor structure is adopted, so that the heat exchange between the motor hydraulic oil and the external environment is enhanced, and the integral heat dissipation capacity of the motor is improved.

by arranging the motor heat dissipation module, an additional power device such as an impeller is not required to be arranged, the circulating flow of hydraulic oil in a heat dissipation loop formed between the gasket integrated loop and the inner cavity of the motor shell is realized, the heat exchange between the motor stator and the motor rotor and the hydraulic oil is enhanced, and the running temperature rise of the motor stator and the motor rotor can be directly reduced.

The motor heat dissipation module is made of magnesium-aluminum alloy, is high in strength and low in weight, facilitates heat dissipation, and facilitates light-weight design of a motor heat dissipation structure.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the gasket integration in the heat dissipation module of the present invention.

Fig. 3 is a cooling path of hydraulic oil of the heat dissipation module according to the present invention.

Figure 1-motor housing; 2-motor inner shell; 3-inner cavity of motor shell; 4, integrating a gasket in the motor heat dissipation module; 5-front end cover; 6-rear end cap; 7-a front thrust bearing; 8-rear thrust bearing; 9-a motor rotating shaft; 10-a rotor; 11-a stator; 12-a pressure regulating sac; 13-water sealing; 14-inner wall of motor shell.

Detailed Description

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

With reference to fig. 1-3, the double-casing internal circulation oil-filled motor disclosed in this embodiment includes a fully-enclosed outer casing 1, an inner casing 2 coaxially fixed in the outer casing, an inner cavity 3 having a hole on the inner casing and leading to the outer casing, a heat dissipation module formed by a motor stator-rotor air gap, an end air gap and leading from the inner casing hole to the outer casing inner cavity, a front end cover 5, a rear end cover 6, a front thrust bearing 7, a rear thrust bearing 8, a motor shaft 9, a stator 10 and a rotor 11; both ends are provided with front end housing 5 and rear end housing 6 respectively around motor housing 1, be provided with preceding footstep bearing 7 on the front end housing 5, be provided with back footstep bearing 8 on the rear end housing 6, be provided with motor shaft 9 between preceding footstep bearing 7 and the back footstep bearing 8, motor shaft 9 sets up in the motor inner shell 2 and one end run through front end housing 5, motor shaft 9 middle part is fixed with rotor 10, be provided with stator 11 in the motor inner shell 2, stator 11 sets up rotor 10 outer end and with rotor 10 position corresponds.

As shown in fig. 1, the front part of the motor outer casing 1 is directly fixed to the front part of the inner casing 2, and the outer casing inner wall 14 is fixed to the rear part of the inner casing 2 by a sector positioning block. The structure ensures that the outer shell 1 and the inner shell 2 are completely fixed, prevents the inner shell 2 and the motor rotating shaft 9 from deviating gradually due to vibration in work, and reduces abrasion. The fan-shaped positioning blocks can be used for finely adjusting the concentricity of the outer shell 1 and the inner shell 2, so that uniform heat dissipation is realized.

As shown in fig. 1, a pressure regulating bag 12 is arranged on the inner wall of the rear end cover of the motor housing 1. The pressure regulating bag 12 can stabilize the pressure of the hydraulic oil in the inner cavity 3 of the shell, and prevent the cavitation problem caused by bubbles generated when the pressure of the hydraulic oil is suddenly reduced in the circulating heat dissipation process.

As shown in figure 1, a water seal is arranged at the joint of the motor rotating shaft 9 and the front end cover 5. the part of the motor rotating shaft 9 penetrating through the front end cover 5 is provided with the water seal 13, so that the sealing performance of the motor shell can be enhanced, and the stable pressure in the motor can be ensured.

As shown in figure 1, hydraulic oil is filled in the motor heat dissipation module, and the motor heat dissipation module is a cooling oil path which is arranged between the air gaps of the motor stator and the motor rotor and is formed by connecting a plurality of hollow gaskets 4, penetrates through the inner shell hole and is formed together with the inner cavity of the motor shell.

As shown in fig. 2, the gasket assembly 4 in the heat dissipation module of the motor is made of magnesium-aluminum alloy, the thickness of each gasket is 0.4 mm-1.5 mm, the length and the width of each gasket are 4 mm-5 mm, the thickness of a channel connected with each gasket is the same as that of the gasket, and the length and the width of each channel are 2.5 mm-3.5 mm.

As shown in fig. 3, the cooling path of the motor is that hydraulic oil in the heat dissipation module of the motor exchanges heat with the stator 11 and the rotor 10 through the gasket assembly 4, and based on the principle of thermal expansion and contraction of the material of the gasket assembly 4, the driving hydraulic oil passes through the inner shell hole from the rear end of the inner shell 2 of the motor, passes through the air gap between the stator 11 and the rotor 10, and the end air gap, enters the inner cavity 3 of the outer shell, exchanges heat with the external environment, and then flows back to the rear end of the inner shell 3 of the motor through the inner shell hole to form a circulating cooling oil.

The above embodiments are merely illustrative of the present patent and do not limit the scope of the patent, and those skilled in the art can make modifications to the parts thereof without departing from the spirit and scope of the patent.