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A motor stator cooling structure and motor

A technology for cooling structure and motor stator, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit static parts, etc. Create simple effects

Active Publication Date: 2019-04-30
XIANGTAN ELECTRIC MFG CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the water-cooling structure adopted by large motors is mainly a water-jacket base structure, which is divided into inner and outer bases, and a cooling water tank is provided in one of the bases, and the inner and outer bases are sealed with interference fit. The main shortcomings of the structure: 1) The structure is complex and difficult to manufacture, especially the processing of the water tank of the machine base is difficult and the cycle is long; 2) It cannot meet the anti-corrosion requirements, regardless of fresh water or seawater cooling, the corrosion in the water tank is serious during long-term operation; 3 ) The machine base is equipped with a water tank, the weight of the machine base is obviously increased compared with other motors, the cooling medium is far away from the heating winding, and the cooling effect is not good

Method used

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  • A motor stator cooling structure and motor
  • A motor stator cooling structure and motor
  • A motor stator cooling structure and motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: with reference to attached figure 1 , attached figure 2 , a motor stator cooling structure, which includes a stator core 1, a main cooling water pipe 2, a U-shaped water pipe 3, a water inlet pipe 4 and a water outlet pipe 5, and the stator core 1 is formed by laminating stator punches 1-1 , the stator core 1 is provided with pressure rings at both ends in the axial direction, and cooling water pipe installation holes 1-2 are provided on the stator punching sheet 1-1 and the pressure ring, the main cooling water pipe 2 is U-shaped, and the main cooling water pipe 2 is U-shaped. The water pipe 2 is installed in the cooling water pipe installation hole 1-2 of the stator core 1 by means of expansion joints, the main cooling water pipe 2 axially protrudes from both ends of the stator core 1, and the inner diameter of the end of the U-shaped water pipe 3 is the same as The outer diameters of the main cooling water pipes 2 are matched, and the adjacent main co...

Embodiment 2

[0022] Embodiment 2: with reference to attached figure 2 ~ attached Figure 7 , a motor stator cooling structure, which includes a stator core 1, a main cooling water pipe 2, an end communication device 6, a water inlet pipe 4 and a water outlet pipe 5, and the stator core 1 is formed by laminating stator punching sheets 1-1 The stator core 1 is provided with pressure rings at both ends in the axial direction, and cooling water pipe installation holes 1-2 are provided on the stator punching sheet 1-1 and the pressure ring. The main cooling water pipe 2 is U-shaped, and the main cooling water pipe 2 is U-shaped. The cooling water pipe 2 is installed in the cooling water pipe installation hole 1-2 of the stator core 1 by way of expansion joint, the main cooling water pipe 2 axially protrudes from both ends of the stator core 1, and the end connecting device 6 includes Tube plate 6-1, gasket 6-3 and water tank 6-2, the tube plate 6-1 has a hole matching the outer diameter of th...

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Abstract

The invention relates to a motor and a stator cooling structure thereof. The stator cooling structure comprises a stator core, main cooling water pipes, end communication devices and water inlet and outlet pipes. Stator punched pieces are overlaid to form the stator core, pressing rings are arranged at two axial ends of the stator core, cooling water pipe mounting holes are formed in the stator punched pieces and the pressing rings, the main cooling water pipes are mounted in the cooling water pipe mounting holes in the stator core and axially extend out of two ends of the stator core, a cooling circuit is formed by one or more main cooling water pipes at the corresponding end of the stator core via the corresponding end communication devices, and the corresponding water inlet and outlet pipes are arranged at two ends of each cooling circuit. The motor and the stator cooling structure have the advantages that the main cooling water pipes are close to windings of the motor to the greatest extent, the windings of the motor are the greatest heating sources of the motor, and accordingly the heat dissipation efficiency of the motor can be effectively improved; the cooling water pipe mounting holes are completely formed when the stator punched pieces are punched, water pipe hole machining in machining modes on large areas can be omitted, and accordingly the stator cooling structure and the motor are easy to machine and manufacture.

Description

technical field [0001] The invention relates to the field of motors, in particular to a motor stator cooling structure and a motor. Background technique [0002] The cooling methods of large motors include air cooling, water cooling, air-water cooling, fluorine cooling, etc. In order to reduce the size of the motor, most of the motor industry currently adopts the water cooling method with higher integration and lower cost. In the prior art, the water-cooling structure adopted by large motors is mainly a water-jacket base structure, which is divided into inner and outer bases, and a cooling water tank is provided in one of the bases, and the inner and outer bases are sealed with an interference fit. The main shortcomings of the structure: 1) The structure is complex and difficult to manufacture, especially the processing of the water tank of the machine base is difficult and the cycle is long; 2) It cannot meet the anti-corrosion requirements, regardless of fresh water or sea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/20
CPCH02K1/20
Inventor 王公强李纯清陈雷王崇明李再华
Owner XIANGTAN ELECTRIC MFG CORP LTD