Sealing monitoring method for simulating sealing conditions of transformer bushing

A technology for simulating transformers and airtightness, which is applied in the field of power systems, can solve the problems of adjustment control, airtightness monitoring and test workload, difficult internal temperature and other problems, achieve multiple meter interfaces, prevent bushing failures, and reduce device size small effect

Active Publication Date: 2014-12-10
STATE GRID CORP OF CHINA +2
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  • Abstract
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Problems solved by technology

In view of the large size of the transformer bushing, once the seal is damaged, it will be a lot of work to carry out the sealing monitoring test again, and it is difficult to

Method used

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  • Sealing monitoring method for simulating sealing conditions of transformer bushing
  • Sealing monitoring method for simulating sealing conditions of transformer bushing

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Embodiment Construction

[0025] Such as Figure 1~2 As shown, a sealing monitoring method for simulating the sealing condition of the transformer bushing comprises the following steps:

[0026] (1) Provide a device for simulating the sealing condition of the transformer bushing, the device is a cylindrical container 1, and the top surface of the cylindrical container 1 is provided with six threaded connections, and the six threaded connections include two external threaded connections 2 and four female threaded interfaces, the two external threaded interfaces 2 are used as oil filling ports;

[0027] (2) Fill the transformer oil into the cylindrical container 1 from the two oil filling ports until it is almost full, that is, there is some space on the top of the cylindrical container 1, and then seal the oil filling port with a sealing ring and nut to ensure the tightness reliable;

[0028] (3) Connect two SF with three-way valves through the adapter 6 The gas density meter 5 is respectively instal...

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Abstract

The invention relates to a sealing monitoring method for simulating sealing conditions of transformer bushing. The sealing monitoring method includes the following steps: providing a device for simulating the sealing conditions of the transformer bushing; oiling and sealing; installing an SF6 gas density meter and a silicone pot; installing an SF6 gas online testing sensor; for connecting a vacuum pump with SF6 gas injection equipment, vacuumizing the device with a vacuum pump, injecting SF6 gas into the device prior to well sealing; utilizing the SF6 gas density meter to monitor changes of SF6 gas density, and judging the sealing conditions of the device by monitoring the SF6 gas density. Poor sealing of the transformer bushing and internal water inflowing conditions of the transformer bushing are simulated by sealing of the position of an oil filling port and dripping to the interior of the device, temperature of the device can be regulated through external measures, changes of internal oil temperature can be simulated during operation of the transformer bushing, the changes of SF6 gas state quantity and silica gel can be acquired when sealing of the transformer bushing is not good, and active role is played in study of preventing failure of the bushing from occurring.

Description

technical field [0001] The invention relates to a sealing monitoring method for simulating the sealing state of a transformer bushing, belonging to the field of power systems. Background technique [0002] As an important accessory of the transformer, the transformer bushing occupies an extremely important part in the safe operation of the power system. Bushing failure often causes large-scale power outages and direct economic losses. The research found that the beginning of bushing failure is often caused by moisture or water ingress after poor sealing, so it is urgent to monitor the tightness of transformer bushings to prevent failures. In view of the large size of the transformer bushing, once the seal is damaged, it will be a lot of work to carry out the sealing monitoring test again, and it is difficult to adjust and control its internal temperature. Therefore, it is necessary to design a simulation of the transformer bushing sealing condition and seal it. methods of ...

Claims

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Application Information

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IPC IPC(8): G01M3/02
Inventor 廖福旺卞志文王宁燕涂恩来施广宇
Owner STATE GRID CORP OF CHINA
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