Novel online oil replacing device of oil-immersed transformer

An oil-immersed transformer and transformer oil technology, applied in transformer/inductor cooling, switchgear, electrical components, etc., can solve the problems of unsuitable mixed use, inability to realize online replacement of transformer oil, etc., to avoid maintenance power outages, avoid internal Heat dissipation and insulation problems, the effect of easy operation

Inactive Publication Date: 2015-03-11
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2. Oils of different oil bases should not be mixed in principle
The disadvantage of this scheme is that the online replacement of transformer oil cannot be realized

Method used

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  • Novel online oil replacing device of oil-immersed transformer
  • Novel online oil replacing device of oil-immersed transformer

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Embodiment Construction

[0028] The invention is a novel oil-immersed transformer online oil change device, such as figure 2 Shown, the present invention is made up of old oil tank, new oil tank, oil pump 15, pipeline 16 and valve, and wherein oil pump 15 is connected at the sampling port of transformer, realizes the extraction and injection of oil by controlling its positive and negative rotation.

[0029] The old oil tank and the new oil tank are respectively connected to the outlet of the oil pump 15 through pipelines, wherein the pipe between the old oil tank and the oil pump 15 is provided with a first valve 17, and the pipe between the new oil tank and the oil pump 15 is provided with a second valve 18 . By controlling the opening and closing of the first valve 17 and the second valve 18, the oil pump 15 can extract old oil and inject new oil.

[0030] The tops of the old oil tank and the new oil tank are respectively connected to the transformer oil conservator through pipelines, and the oil ...

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PUM

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Abstract

The invention belongs to the technical field, and in particular relates to a novel online oil replacing device of an oil-immersed transformer. The device comprises an old oil tank, a new oil tank, an oil pump, a pipeline and valves; the oil pump is connected to a sampling port of an oil tank of the transformer; the old oil tank and the new oil tank are respectively connected with an outlet of the oil pump through the pipeline; a first valve is arranged on a pipe between the old oil tank and the oil pump, and while a second valve is arranged on another pipe between the new oil tank and the oil pump; the top parts of the old oil tank and the new oil tank are respectively connected with an oil conservator of the transformer through the pipeline, wherein the oil conservator is connected with the oil tank of the transformer; a third valve is arranged on the pipeline through which the old oil tank is connected with the oil conservator of the transformer; a fourth valve is arranged on the pipeline through which the new oil tank is connected with the oil conservator of the transformer. With the adoption of the device, an oil replacement vehicle is saved; the structure is simple, and the operation is convenient; the external structure of the transformer is out of change; the power is continuously supplied during use; therefore, online replacement of the oil of the transformer is realized; the problems of radiating and insulating of the inside of the transformer during replacing oil on line can be avoided.

Description

technical field [0001] The invention belongs to the technical field, and in particular relates to a novel online oil changing device for an oil-immersed transformer. Background technique [0002] The quality of transformer oil should have good electrical insulation performance, high dielectric strength, small dielectric loss; low viscosity, fast heat dissipation, good cooling performance, and can conduct heat generated by the transformer during operation; long service life; low freezing point, It has good low-temperature fluidity; high flash point and low evaporation, so as to ensure that it can work safely at the operating temperature (up to about 90°C). [0003] Due to the long running time of the transformer, the transformer oil will gradually age and deteriorate under the action of long-term working voltage, operating overvoltage and lightning overvoltage. At the same time, the oil needs to be changed after the equipment is overhauled. According to GB / T14542-2000 "Guid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/14H02B3/00
Inventor 刘旸张远博迟丹一陈浩
Owner STATE GRID CORP OF CHINA
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