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Novel low-temperature immersed motor

A submersible motor and low-temperature technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of large equipment, mechanical seal leakage, and low efficiency, so as to reduce the volume of equipment, reduce mechanical seals, and eliminate potential dangerous effect

Inactive Publication Date: 2014-03-05
DALIAN DEEP BLUE PUMP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, an external motor is usually used, which has mechanical seals and potential leakage risks. At the same time, the external motor needs to provide additional cooling, which makes the whole set of equipment collectively bulky and low in efficiency

Method used

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Experimental program
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Effect test

Embodiment 1

[0017] Such as image 3 As shown, a new low-temperature submersible motor includes a motor housing 3, a motor stator 4, a motor rotor 2, and a motor shaft 1. It is characterized in that the motor housing 3 is installed in a low-temperature submersible pump, and the motor housing The motor stator 4 is fixedly installed in the body 3, the motor shaft 1 is covered with the motor rotor 2, the motor stator 4 and the motor rotor 2 are opposite to each other, the motor stator 4 and the motor rotor 2 are immersed in the liquid of the cryogenic submersible pump, and the motor stator 4 is connected to the stator lead wire 6. The new cryogenic submersible motor is installed on the outflow side of the cryogenic submersible pump.

[0018] The motor of the present invention is built into the cryogenic submersible pump, the stator lead wire 6 is connected to the motor stator 4 to provide power, the motor stator 4 is fixed on the motor housing 3, and the motor rotor 2 rotates to provide powe...

Embodiment 2

[0022] In the present invention, the motor housing 3 is connected to the output pipeline of the cryogenic submersible pump through a circulation pipeline. At this time, after the low-temperature liquid in the motor cools down the temperature of the motor, the low-temperature liquid enters the output pipeline of the cryogenic submersible pump through the circulation pipeline, and forms a path with the place where the low-temperature liquid enters the motor, so as to prevent the low-temperature liquid from staying in the motor housing 3 for too long and cause The temperature of the cryogenic liquid rises too fast.

[0023] The liquid circuit in the motor of the present invention can also be designed in other forms, and the motor housing 3 is connected to the input end of the impeller of the novel low-temperature submersible motor through a flow pipeline. At this time, the cryogenic liquid in the motor casing forms a circuit. The circulation pipeline is arranged inside the outer...

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Abstract

The invention relates to motors, in particular to an immersed motor which is used in a low-temperature environment. A novel low-temperature immersed motor comprises a motor shell, a motor stator, a motor rotor and a motor shaft. The novel low-temperature immersed motor is characterized in that the motor shell is installed in the low-temperature immersed motor, the motor stator is fixedly installed in the motor shell, the motor shaft is sleeved with the motor rotor, the motor stator is opposite to the motor rotor, both the motor stator and the motor rotor are immersed in liquid in a low-temperature liquid storage tank, and the motor stator is connected with a stator lead wire. According to the novel low-temperature immersed motor, due to the fact that a body of the motor is arranged in the low-temperature liquid storage tank, mechanical sealing is reduced correspondingly, and potential hazards caused by leakage of mechanical sealing are eliminated; meanwhile, due to the fact that the motor stator and the motor rotor are cooled by the liquid in the low-temperature liquid storage tank, an extra cooling device does not need to be provided, the number of pieces of equipment can be reduced, working efficiency is improved, and the size of the equipment is reduced.

Description

technical field [0001] The invention relates to a motor, in particular to a submersible motor used in a low-temperature environment. Background technique [0002] At present, in the field of LNG, cryogenic submersible pumps have been widely used. The supporting motor of this pump is directly immersed in the low-temperature LNG medium, which belongs to the low-temperature submersible motor, and the motor is directly cooled by LNG. Due to the characteristics of low temperature and easy vaporization of LNG medium, the working conditions are harsh, so the requirements for the motor conveying this medium are very high. It is difficult to manufacture low temperature resistant silicon steel sheet, low temperature resistant electromagnetic wire, low temperature resistant insulating structure, low temperature resistant insulating paint, low temperature resistant aluminum alloy casting rotor, low temperature resistant stator lead wire, etc. In addition, it is difficult to grasp the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/193
Inventor 肖海涛申涛丁乐庆谢先锋李光绪
Owner DALIAN DEEP BLUE PUMP CO LTD
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