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Water filling type submersible motor with improved stator iron core pressing rings

A stator core and submersible motor technology, applied to electrical components, electromechanical devices, electric components, etc., can solve the problems of complex distribution of end windings of water-filled submersible motors, waste of pressure ring materials, water friction loss, etc., and achieve saving The effect of pressing ring material, improving the integrity of force and bearing capacity, and reducing friction loss

Inactive Publication Date: 2015-03-04
HEFEI HENGDAJIANGHAI PUMP IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The distribution of the end windings of the water-filled submersible motor is very complicated. The axial component of the leakage magnetic field at the end of the motor generated by the stator end windings is relatively large, and eddy currents are induced on the surface of the stator pressure ring, thereby generating eddy current losses; The inner cavity of the submersible motor is filled with cooling water medium. When the motor is running normally, the cooling water in the inner cavity circulates and rubs against the surface of the stator pressure ring to generate water friction loss; in addition, because the two end faces of the traditional pressure ring are parallel, it causes Reduced waste of press ring material

Method used

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  • Water filling type submersible motor with improved stator iron core pressing rings
  • Water filling type submersible motor with improved stator iron core pressing rings
  • Water filling type submersible motor with improved stator iron core pressing rings

Examples

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Effect test

Embodiment 1

[0020] Taking the motor YBQ2800 / 4-S (10000) water-filled submersible motor for mining increased safety submersible pumps as an example, the relevant parameters of the water-filled submersible motor are as follows: the outer diameter of the stator core is 850mm, the inner diameter of the stator core The length of the stator core is 1550mm, and the number of stator slots is 60.

[0021] see figure 1 with figure 2 , the water-filled submersible motor that improves the stator core pressure ring includes a casing 1, a stator 2, a rotor 3 and a rotating shaft 6, the stator 2 is fixed in the casing 1, the rotor 3 is fixed on the rotating shaft 6, and the shaft of the stator core Stator pressure rings 4 are respectively fixedly installed at both ends; end windings 5 ​​are respectively provided in the housings outside the four stator pressure rings at both ends. see image 3 with Figure 4 , the outer circumference of the stator pressure ring is the yoke 41, the inner circumferen...

Embodiment 2

[0024] Taking the motor YBQ2800 / 4-S (10000) water-filled submersible motor for mining increased safety submersible pumps as an example, the relevant parameters of the water-filled submersible motor are as follows: the outer diameter of the stator core is 850mm, the inner diameter of the stator core is 462mm, the stator core length is 1550mm, and the number of stator slots is 60;

[0025] The thickness a of the stator pressure ring is 25mm, the groove type of the stator pressure ring 4 is parallel grooves, the number of teeth of the tooth part 42 is 60, and is evenly distributed along the circumferential direction; the groove depth h of the tooth groove is 135.2mm, and the groove width 2R is 15.4 mm, and the groove bottom is a semicircle with a radius R of 7.7mm; the side of the teeth of the stator pressure ring adjacent to the end winding 5 is a slope inclined to the center of the circle, and the slope angle α of the slope is 6°.

[0026] Others are with embodiment 1.

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Abstract

The invention relates to a water filling type submersible motor with improved stator iron core pressing rings. The water filling type submersible motor comprises a casing, a stator, a rotor and a rotating shaft; the stator is fixed on the casing; the rotor is fixed on the rotating shaft; the stator pressing rings are arranged at two axial ends of a stator iron core respectively; an end winding is arranged in the casing portion located at the outer side of each end of stator pressing ring; the outer circumference of each stator pressing ring is a yoke portion and the inner circumference of each stator pressing ring is a tooth portion; a groove formed between every two adjacent teeth of each tooth portion is a tooth groove, wherein the groove depth of every tooth groove is h, the groove width is 2 R, and R is the radius of the groove bottom. The water filling type submersible motor is characterized in that the lateral side of each tooth portion of the corresponding stator pressing ring which is located at the side adjacent to the corresponding end winding is an inclined plane which is inclined towards the center of the circle. According to the water filling type submersible motor with the improved stator iron core pressing rings, the stator pressing ring structure that the pressing ring tooth plane is inclined towards the inner side is adopted and accordingly the pressing ring stress can be improved, pressing ring materials can be saved, and the eddy current loss produced by the end leakage magnetic field in the stator pressing rings is reduced.

Description

technical field [0001] The invention belongs to the technical field of submersible motors, in particular to a water-filled submersible motor with an improved stator core pressure ring. Background technique [0002] Water-filled submersible motors are mostly used in major projects such as mine drainage and urban waterlogging prevention. Due to the unique operating environment where the inner cavity of the water-filled submersible motor is filled with cooling water, the water friction loss of the water-filled submersible motor is relatively large. , in order to ensure that the stator core of the water-filled submersible motor is fastened without deformation, usually the two ends of the stator core of the submersible motor are reinforced with a certain thickness of the pressure ring structure. In engineering practice, the structure of the stator pressure ring is relatively simple for the convenience of the process. , the inner plane of the pressure ring is parallel to the outer...

Claims

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Application Information

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IPC IPC(8): H02K1/18H02K9/19
CPCH02K3/42H02K1/18
Inventor 朱庆龙杨勇龚昌明王宁
Owner HEFEI HENGDAJIANGHAI PUMP IND CO LTD
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