Helium leak detection and inflation system for switch cabinet

Abstract

The invention discloses a helium leak detection and inflation system for a switch cabinet. The system is used for detecting the switch cabinet, and comprises a plurality of vacuum boxes, a gas extraction device, a helium gas filling device, a helium mass spectrum leak detection device, a helium gas recovery device, an SF6 filling device and a belt, wherein the vacuum boxes are used for accomodating the switch cabinets, and each vacuum box is connected with a box body air pipe extending into the vacuum box and a cabinet body air pipe extending into the switch cabinet; the vacuum boxes are placed on the belt, and the belt is used for driving the vacuum boxes to sequentially pass through the gas extraction device, the helium gas filling device, the helium mass spectrum leak detection device, the helium gas recovery device and the SF6 filling device, so that the procedures of hole gas extraction, helium gas filling, detection, helium gas recovery and SF6 filling are sequentially completed. Compared with manual leak detection, the switch cabinet helium leak detection and inflation system provided by the invention has the advantage that the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of electrical switches, in particular to a helium gas leak detection and inflation system for a switch cabinet. Background technique [0002] The outstanding advantages of gas insulated switchgear, such as small size, high reliability, and operation not affected by the external environment, are more and more recognized by domestic users, but there are still many problems affecting the long-term operation reliability of the product to be solved, among which the sealing reliability is The key factor to give full play to the advantages of gas insulated switchgear and ensure the long-term operation reliability of gas insulated switchgear. For the gas-insulated switchgear that has passed the factory insulation test, the insulation performance of the equipment is mainly guaranteed by the molecular density of the gas-insulated medium inside the gas-filled unit. Under normal working conditions, the internal pressure of the ga...

AI Technical Summary

Problems solved by technology

in SF 6 When the switchgear leaves the factory, it is necessary to test the tightness of the switchgear. In the past, helium mass spectrometry has been used for leak detection, and the cycle is very long. Only a single switchgear can be tested at a time, and the pipeline installation steps are cumbersome and inefficient, which limits the production cycle. great influence

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