Whole sealing oil pump for transformer

A transformer oil, fully-sealed technology, applied in the field of transformer oil pumps, can solve the problems affecting the smooth operation of the transformer, the hidden danger of oil leakage of the pump body and the base, etc., so as to solve the problem of oil leakage of the oil pump, improve the service life, and eliminate the hidden danger of oil leakage of the oil pump. Effect

Active Publication Date: 2005-03-23
ZHEJIANG ERG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the provisions of the Ministry of Standards JB/T10112-1999, the service life of this oil pump is five years, that is, after the oil pump has been used for five years, the power department must cut off the power to replace the pump, which

Method used

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  • Whole sealing oil pump for transformer

Examples

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Example Embodiment

[0007] As shown in the figure, the transformer oil pump mainly includes the pump body 1, the impeller 2, the cover 3, the motor 5, the base 7, the junction box and the sealed connection parts, etc. The motor 5 adopts an eight-pole disc motor, and is equipped with a centripetal The thrust matching bearing 4 is sealed by electric welding between the oil pump casing 1 and the cover 3, and between the base 7 and the pump body 1. The connections at the bottom of the pump body are fixed with screws 6 and are welded to death after installation. Smooth, so that the entire pump body is in a fully sealed state.

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Abstract

The invention relates to a transformer oil pump of power-plant used to constrain the oil circulation cooling in great large-scale and medium size transformer, rectiformer, reactor, and electric locomotive transformer. It includes pump body, impeller, electric machine, base plugger, connection box, sealing piece, and so on; it uses octapole disk type electric machine, and pairing bearing with centripetal thrust force; it encapsulates by electric welding between oil pump body and plugger, arbor and plugger, it can decrease synchronous speed 250r/min, decrease buzz 5-10dB, prolong service life.

Description

technical field [0001] The invention relates to a transformer oil pump used in large and medium-sized transformers, rectifier transformers, reactors and electric locomotive transformers for forced oil circulation cooling power devices. Background technique [0002] The existing transformer oil pump mainly includes pump body, impeller, motor, base, plug cover, junction box and sealing connector, etc. The motor is generally a six-pole disc motor with a synchronous speed of 1000r / min. Bolt on. According to the provisions of the Ministry of Standards JB / T10112-1999, the service life of this oil pump is five years, that is, after the oil pump has been used for five years, the power department must cut off the power to replace the pump, which will inevitably result in power failure and human, material and material resources required for replacement. In addition, there is a hidden danger of oil leakage between the pump body and the base, which affects the smo...

Claims

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Application Information

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IPC IPC(8): F04D13/06F04D29/08H01F27/12
Inventor 黎贤钛
Owner ZHEJIANG ERG TECH
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