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Gas barrier device

A gas barrier and pressure technology, which is applied in the direction of measuring devices, measuring fluid pressure, and components of electrical measuring instruments, etc., can solve problems affecting the insulation performance of power transformers and affecting the working efficiency of power transformers, and achieve the effect of preventing gas from entering

Inactive Publication Date: 2013-04-17
EAST CHINA ELECTRIC POWER TEST & RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the pressure value of the pressure relay is detected, if the gas enters the oil medium storage equipment through the pressure relay, it will affect the insulation performance of the power transformer, thereby affecting the working efficiency of the power transformer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Such as figure 1 As shown, the gas barrier device in Embodiment 1 includes a pressure input port 1 and a pressure output port 2 , and an insulating medium layer 3 is arranged between the pressure input port 1 and the pressure output port 2 .

Embodiment 2

[0016] Such as figure 2 As shown, the gas barrier device in Embodiment 2 is improved on the basis of Embodiment 1, and the difference is that: the upper end surface of the pressure output port 2 is located in the insulating medium layer 3, and the pressure output port The lower end surface of 2 is on the same straight line as the lower end surface of the insulating medium layer 3 . That is, the difference between Embodiment 2 and Embodiment 1 lies in the change of the position of the pressure output port 2 .

[0017] The gas barrier device of the above embodiment 1 and embodiment 2: by inputting gases of different pressures at the pressure input port 1 of the gas barrier device, and comparing it with the standard voltage value range of the pressure relay, thereby detecting the pressure value range of the pressure relay Is it up to standard. When in use, the air pumps that provide gas sources of different pressures are connected to the pressure input port 1 of the gas barrie...

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Abstract

The invention discloses a gas barrier device, comprising a pressure input port (1) and a pressure output port (2), wherein an insulation medium layer (3) is arranged between the pressure input port (1) and the pressure output port (2). The gas barrier device disclosed by the invention can be used to prevent gas from entering oil medium storage equipment when detecting a pressure relay, so as to guarantee the safety of a power transformer.

Description

technical field [0001] The invention relates to a gas barrier device, in particular to a gas barrier device for detecting whether the pressure range of a pressure relay of a power transformer meets the standard. Background technique [0002] Power transformers are divided into oil-immersed power transformers and dry-type power transformers according to the cooling medium. In the power industry, oil-immersed power transformers are widely used. The pressure relay is an important safety protection device on the oil-immersed power transformer. They are installed vertically on the side of the power transformer oil tank and on the top of the transformer. [0003] The pressure relay senses the pressure change of the insulating oil inside the transformer due to temperature and gas decomposition, so as to judge whether there is an internal fault and remove the fault. The transformer is running, and it is a protection element that directly contacts the internal medium of the transfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01R1/02G01L19/06
Inventor 袁志文卢有龙高天云徐卫中
Owner EAST CHINA ELECTRIC POWER TEST & RES INST
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