On-line monitoring sampling system for sulfur hexafluoride gas

Abstract

The invention provides an on-line monitoring sampling system for sulfur hexafluoride gas. The on-line monitoring sampling system is characterized by comprising a filter, an electromagnetic valve, a depressurizing valve, a flow sensor, a sulfur hexafluoride decomposition product detector, a first one-way valve, a cylinder, a second one-way valve and an electric pushing rod, wherein one end of the filter is connected with electrical sulfur hexafluoride equipment, and the other end of the filter is connected with a gas inlet of the sulfur hexafluoride decomposition product detector through the electromagnetic valve, the depressurizing valve and the flow sensor in sequence; a gas outlet of the sulfur hexafluoride decomposition product detector is connected with the cylinder and the second one-way valve respectively through the first one-way valve; the other end of the second one-way valve is connected with the electrical sulfur hexafluoride equipment; a piston rod of the cylinder is fixedly connected with the electric pushing rod. According to the on-line monitoring sampling system, the high-pressure sulfur hexafluoride gas in the electrical equipment can be continuously and stably sampled, and the detection reliability of the sulfur hexafluoride decomposition product detector is ensured; after detection is finished, the sulfur hexafluoride gas can be re-filled into the equipment for cyclic utilization, so that the zero emission of tail gas is realized.

Description

technical field [0001] The invention provides an on-line monitoring and sampling system for sulfur hexafluoride gas, which belongs to the technical field of on-line gas monitoring for electrical equipment. Background technique [0002] With the rapid development of power grid construction, my country's power grid has developed from an isolated urban power grid to a large regional power grid. The pattern of west-to-east power transmission, north-south mutual supply, and national large-scale grid is taking shape. In recent years, the power industry has actively used online monitoring technology, carried out condition maintenance, strengthened routine testing and comprehensive analysis of equipment, and eliminated some equipment hidden dangers in time, which has significantly improved the reliability of power supply in the national power grid. However, the failure of electrical equipment has always been the main factor that endangers the safe operation of the power grid. A cons...

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Problems solved by technology

[0003] At present, the existing samplers on the market do not meet the needs of online monitoring and sampling. In the past two years, the growth rate of SF6 electrical equipment is much higher than before. At this time, the site urgently needs an online monitoring and sampling system for sulfur hexafluoride electrical equipment.

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