Device for monitoring SF6 gas density and micro-water content on line

Abstract

The invention belongs to the field of SF6 online monitoring devices, particularly relates to a device for monitoring SF6 gas density and micro-water content on line, and aims to solve the problems that an existing device for monitoring SF6 gas density and micro-water content sends out an alarm signal only when gas pressure of the device is reduced to an alarm value, cannot automatically respond intime according to conditions, and cannot achieve continuous monitoring. In order to solve the above problems, the scheme is provided as follows: the device for monitoring SF6 gas density and micro-water content on line comprises a gas storage tank and the alarm box, the alarm box is arranged on one side of the gas storage tank, one side of the gas storage tank is fixedly connected with a communicating U-shaped pipe, the other end of the U-shaped pipe communicates with one side of the gas storage tank, and the interior of the U-shaped pipe is provided with an air inlet assembly for air inlet.According to the invention, a small amount of gas is collected from the gas storage tank through a transmission assembly for detection, uninterrupted continuous detection can be realized, if the detection structure is normal, the equipment operates normally, and if the detection structure is abnormal, an alarm assembly is started to give an alarm and automatically cut off a power supply, the structure is simple, and the operation is convenient.

Description

technical field [0001] The invention relates to the technical field of SF6 on-line monitoring devices, in particular to a device for on-line monitoring of SF6 gas density and micro-water content. Background technique [0002] SF6 gas itself is extremely stable, has high dielectric strength and arc extinguishing ability, which is an important reason why it is widely used in high-voltage electrical occasions. However, the stability and reliability of circuit breakers and electrical equipment filled with SF6 gas depend entirely on the purity of SF6 gas. If the purity is damaged, such as excessive moisture, impurities, processing waste and metal powder, etc., its stability will be damaged, and the dielectric strength and arc extinguishing ability will be greatly reduced. In actual use, when the SF6 micro-water content exceeds the standard, it will cause the chemical reaction of SF6 gas decomposition products to produce toxic compounds, corrode the equipment, reduce the mechanic...

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Problems solved by technology

[0003] And the existing device that is used to monitor SF6 gas density and micro-moisture content has the following outstanding defects: 1. When SF6 electrical products leak, only when its gas pressure drops to the alarm value, the alarm signal is sent, and this At that time, SF6 gas had leaked a lot; 2. Many substations are now unattended substations, so for this kind of SF6 electrical equipment, if a gas leak occurs, the device cannot automatically respond in time according to the situation; 3. Monitoring The process is intermittent and cannot be continuously monitored. Leakage may occur during the monitoring process, but it cannot be detected. Therefore, we propose a device for online monitoring of SF6 gas density and micro-water content to solve the above-mentioned problems.

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