Gas circuit system for online checking device of mutation pressure relay

Abstract

The invention relates to a gas circuit system for an online checking device of a mutation pressure relay, and the gas circuit system comprises a front end pre-pressing part and a back end measuring part which are mutually connected, wherein the front end pre-pressing part comprises a pre-pressing pump, a pre-pressing solenoid valve, an energy storage device, a pre-pressing end connector, a charging solenoid valve bank, a pre-pressing end sensor and a pre-pressing end exhaust valve, the back end measuring part comprises a measuring end connector, a standard mutation pressure relay and a measuring end exhaust valve, the pre-pressing pump, the pre-pressing solenoid valve, the energy storage device and the pre-pressing end connector are connected in sequence, the pre-pressing end connector is respectively connected with the charging solenoid valve bank, the pre-pressing end sensor and the pre-pressing end exhaust valve, the charging solenoid valve bank is connected with the measuring end connector, the measuring end connector is respectively connected with a mutation pressure relay to be detected and the measuring end exhaust valve, and the mutation pressure relay to be detected is connected with the standard mutation pressure relay. Compared with the prior art, the gas circuit system provided by the invention has the advantages of accurately controlling the flow rate, and the like.

Description

technical field [0001] The invention relates to a technology related to an on-line calibration device for a pressure relay, in particular to an air circuit system for an on-line calibration device for a sudden change pressure relay. Background technique [0002] In order to meet the needs of the rapid development of my country's national economy, a large number of high-voltage and large-capacity transformers have entered the city center in recent years. Due to the particularity of urban power supply, the requirements for the safety of these transformers are getting higher and higher, especially the explosion-proof ability of the transformers. Once the transformer in the city bursts and catches fire, it will not only cause great economic losses, but also cause greater social impact. Therefore, preventing faulty transformers from bursting and igniting is a common requirement of all transformer manufacturers and power industry departments. Especially in the harsh operating env...

AI Technical Summary

Problems solved by technology

Once the transformer in the city bursts into fire, it will not only cause great economic losses, but also cause greater social impact. Therefore, preventing faulty transformers from bursting into flames is a common requirement of all transformer manufacturers and electrical departments.

Especially in the harsh operating environment of transformers today, it is impossible to completely prevent early faults by only improving the anti-burst ability of the transformer itself to solve the problem of bursting of faulty transformers.

At this time, the application of sudden pressure protection is an improvement and supplement to the non-electricity protection of the main transformer; as far as the long-term operation of the site is concerned, the mechanism, application and reliability of sudden pressure protection from grassroots technicians to power companies are still lacking. understanding and confidence

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