Rapid leakage detecting method suitable for extra-high voltage converter transformers

A technology of converter transformers and converters, which is applied in the direction of detecting the appearance of fluid at the leakage point and using liquid/vacuum degree to measure the liquid tightness, etc., which can solve the problems of long vacuuming time, high maintenance rework rate, blank, etc. problem, to achieve the effect of simple operation, good repeatability and low cost

Active Publication Date: 2014-11-05
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +3
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Problems solved by technology

[0003] Helium mass spectrometer leak detector is one of the most advanced leak detection equipment in the world at present. leakage, high-voltage transformers of power equipment, high-voltage switch leak detection, etc., but there is a gap in the application of power transformers, especially UHV converter transformers.
[0004] For a long time, the leak detection work of high-voltage power transformers has been staying above the level of vacuuming and observing the voltage c

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  • Rapid leakage detecting method suitable for extra-high voltage converter transformers
  • Rapid leakage detecting method suitable for extra-high voltage converter transformers

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Embodiment Construction

[0032] Such as figure 1 As shown, the present invention adopts helium-air mixture, the principle of micro-positive pressure leakage, and a high-precision helium leak detector, which is suitable for large-volume, thin-shell equipment such as ultra-high voltage converter transformers (referred to as converter transformers) Leak detection.

[0033] A fast leak detection method suitable for UHV converter transformers. It uses a fast leak detection device suitable for UHV converter transformers. The fast leak detection device includes converter transformer 1 (as the equipment to be tested) and air compressor 2 (As an inflatable device), a high-pressure large-capacity helium cylinder 3 (used to fill helium), a helium mass spectrometer leak detector 5 (used to detect leaking gas and display the leak rate), sniffer 4 and pipelines (used to suck Leaking gas). It also includes a compressed air tank 6 arranged between the converter transformer 1 and the air compressor 2. An oil pillow 7 i...

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Abstract

Provided is a rapid leakage detecting method suitable for extra-high voltage converter transformers. According to the method, a rapid leakage detecting device is used for detection and comprises a converter transformer used as equipment to be detected, an air compressor used as inflating equipment, a helium gas bottle, a helium mass spectrometer leak detector and a suction gun. A compressed air tank is arranged between the converter transformer and the air compressor, the helium gas bottle is connected with the converter transformer through a pipeline, and the suction gun is connected with the helium mass spectrometer leak detector through a pipeline. The method achieves rapid detection of leakage points of the extra-high voltage converter and is especially suitable for the extra-high voltage converter transformers and also suitable for other large-volume oil-filled transformers.

Description

Technical field [0001] The invention belongs to the application field of high-precision leak detection technology for high-voltage electrical equipment. Background technique [0002] The current leak detection technology is constantly developing, the leak detection equipment is constantly improving, and the leak detection method is continuously making breakthroughs and innovations. [0003] Helium mass spectrometer leak detector is one of the most advanced leak detection equipment in the world. It has a wide range of applications, especially in the aerospace and power fields that represent advanced technology, such as small parts of aerospace equipment and small chambers. Leakage, leakage detection of high-voltage transformers and high-voltage switches of power equipment, but there is a gap in the application of leakage detection in power transformers, especially UHV converter transformers. [0004] For a long time, the leak detection work of high-voltage power transformers has alwa...

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Application Information

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IPC IPC(8): G01M3/20
Inventor 刘英伟
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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