Detection method and detection system for detecting leakage of inner cooling water of converter station converter valve

A detection method and a technology of a converter valve, which are applied in directions such as detecting the appearance of fluid at a leak point and using liquid/vacuum to measure liquid tightness, etc., which can solve the problem of not being able to detect water leakage, loss, and short-circuit fire of the converter valve in advance. problem, to achieve the effect of solving the problem of water leakage of the converter valve that is difficult to detect in time, safe and reliable operation assistance, and significant economic and social benefits

Inactive Publication Date: 2015-10-14
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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Problems solved by technology

The cooling of the diverter valve is dissipated by the internal cooling water, but due to the long-term operation of the inner cooling water pipe and the complex and strong electromagnetic environment, the leakage of the inner cooling water leads to short-circuit and fire accid

Method used

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with specific embodiments.

[0015] The invention includes an isotope tracer liquid and a nuclear detection counter. The isotope tracer liquid is sealed and placed in the cooling water liquid in the converter valve and mixed evenly with the inner cooling water liquid. The nuclear detection counter is arranged inside the valve hall of the converter station. The nuclear detection counters may be Geiger-Müller type counters, and the number thereof is not less than four. The isotope tracer solution may be tritium water.

[0016] The basic principle of the present invention is to inject a suitable isotope tracer material into the cold water circuit in the converter valve, and detect the tracer material in the air around the converter valve through the preferred isotope detection counter. Once the tracer material is detected, the It shows that the internal cooling water leaks from the converter valve part...

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Abstract

The invention relates to a detection method and a detection system for detecting the leakage of the inner cooling water of a converter station converter valve. The method comprises the steps of (1) sealing the isotopic tracing liquid in a cold-water liquid in a converter valve to uniformly mix the isotopic tracing liquid with the cold-water liquid in the converter valve; (2) arranging a nuclear detection counter inside the valve hall of the converter station so as to detect the tracing material in the air surrounding the converter valve. The detection of the tracing material shows the leakage of the inner cooling water inside the converter valve around the counter. Compared with the prior art, the detection method and the detection system are simple and ingenious. The problem that the leakage of the converter station converter valve is difficult to be found out timely can be effectively solved. Meanwhile, the safe and reliable operation of the converter station is greatly facilitated.

Description

technical field [0001] The invention relates to a detection technology for cooling fluid leakage of electric power equipment, in particular to a detection method and system for cooling water leakage in a converter valve of a converter station. Background technique [0002] In recent years, DC transmission technology has been more and more widely used in practical power transmission projects, and the converter valve is the core equipment of DC transmission. The cooling of the converter valve is radiated by the internal cooling water, but due to the long-term operation of the internal cooling water pipe and the complex and strong electromagnetic environment, the leakage of the internal cooling water causes the converter valve to short-circuit and catch fire from time to time, resulting in heavy losses. Although the valve hall is equipped with a very early fire alarm device, the water leakage can only be found after the fire and the short-circuit fire, and the water leakage can...

Claims

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Application Information

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IPC IPC(8): G01M3/20
Inventor 薛建之周徐达刘志龙王长春王和杰刘斯佳刘志英
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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