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Main-cable sealing structure of submersible electric pump

A cable sealing and sealing structure technology, applied in electrical components, electromechanical devices, electric components, etc., can solve the problems of sealing and waterproof ability affecting the reliability of submersible motors, affecting the reliability of sealing surfaces, and burning stator coils. Low cost and the effect of solving the problem of water inflow

Inactive Publication Date: 2016-12-14
合肥凯泉电机电泵有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when submersible pumps are being repaired, it is often found that water enters the seal of the main cable, causing the stator coil to be damp and burnt. Therefore, the waterproof ability of the main cable seal directly affects the reliability of the submersible motor.
The main cable seal of the submersible pump currently produced only adopts a set of cable cup sealing ring structure. Due to the shaking of the cable caused by the impact of the water flow, the reliability of the sealing surface will be affected, so there is still a small part of water leakage, causing water to enter the motor. burn

Method used

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  • Main-cable sealing structure of submersible electric pump
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  • Main-cable sealing structure of submersible electric pump

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Embodiment Construction

[0016] see figure 1 , a submersible pump main cable sealing structure, including a main cable 1, a cable gland 2 and a junction box cover 5, the cable gland 2 fixes and compresses the main cable 1 in the outlet hole of the junction box cover 5, the main There is a first rubber cup sealing ring 3 between the cable 1 and the cable gland 2. In addition to the sealing performance, it also has the function of fixing the main cable 1 and preventing the shaking of the main cable 1 caused by the impact of water flow. The cable gland 1 and the junction box The joint surface of the cover 5 is provided with an O-shaped sealing ring 4 to prevent water from entering from the joint surface. A second leather cup sealing ring 6 is provided between the main cable 1 and the outlet hole of the junction box cover 5 to ensure that the above two The failure of the sealing structure prevents the incoming water from entering the inner cavity of the motor; the bifurcation of the core of the main cable...

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Abstract

The invention discloses a main-cable sealing structure of a submersible electric pump. The main-cable sealing structure comprises a main cable, a cable gland and a junction box lid. The main cable is fixed and tightly pressed into a wire outlet hole of the junction box lid through the cable gland, a first packing-cup sealing ring is arranged between the main cable and the cable gland, an O-shaped sealing ring is arranged on the combining face of the cable gland and the junction box lid, a second packing-cup sealing ring is arranged between the main cable and the wire outlet hole of the junction box lid, and three sealing structures are respectively formed; a vulcanized head is arranged at the branched portion of cable cores of the main cable, and conductor connecting pipes are respectively connected between the corresponding cable cores of the main cable and motor winding lead wires. The main-cable sealing structure is simple and low in cost; as three sealing structures including the main-cable outer sealing structure, the inter-main-cable-core sealing structure and the sealing structure between conductors inside the cable cores are achieved, and the main-cable outer sealing structure comprises three sealing structures, the water inlet problem of the main cable is effectively solved, and the sealing reliability is greatly improved.

Description

technical field [0001] The invention relates to the field of sealing structure of a submersible electric pump, in particular to a sealing structure of a main cable of a submersible electric pump. Background technique [0002] At present, when submersible pumps are being repaired, it is often found that water enters the seal of the main cable, causing the stator coil to be damp and burnt. Therefore, the waterproof ability of the main cable seal directly affects the reliability of the submersible motor. The main cable seal of the submersible pump currently produced only adopts a set of cable cup sealing ring structure. Due to the shaking of the cable caused by the impact of the water flow, the reliability of the sealing surface will be affected, so there is still a small part of water leakage, causing water to enter the motor. burn. Contents of the invention [0003] The object of the present invention is to provide a main cable sealing structure of a submersible electric p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/22H02K5/128
CPCH02K5/1285H02K5/225
Inventor 李再宏尤保健余志礼
Owner 合肥凯泉电机电泵有限公司
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