Fast vacuuming and inflation recovery connection device, vacuuming method and inflation method

Abstract

The invention discloses a fast vacuuming and inflation recovery connection device, a vacuuming method and an inflation method, including a cross-shaped connecting body and an SF 6 The device is connected to the SF 6 The equipment connector; the cross-shaped connecting body includes a cross pipe, a connecting pipe, two connecting grooves, two connecting plugs and two ball valves; the cross pipe includes four outlet ports; the first outlet port is connected to the first ball valve, The first ball valve is connected to the first connecting groove through a connecting pipe; the second outlet is connected to the second connecting groove; the third outlet is connected to the first connecting plug; the fourth outlet is connected to the second ball valve , the second ball valve is connected with the second connecting plug through the connecting pipe. The fast vacuuming and inflation recovery connection device, vacuuming method and inflation method of the present invention have the advantages of good versatility, simple and quick connection operation, and can protect pipelines from moisture.

Description

technical field [0001] The invention relates to a fast vacuuming and inflation recovery connection device, in particular to a fast vacuumization and inflation recovery connection device, a vacuuming method and an inflation method suitable for vacuumizing or inflating SF6 equipment in a substation. Background technique [0002] At present, the substation tends to develop without oil, and the circuit breakers in the substation are mostly vacuum circuit breakers, SF 6 circuit breaker, where SF 6 Circuit breaker equipment occupies a leading position in circuit breaker equipment above 35kV due to its good insulation performance, corrosion resistance and non-toxic performance. With SF 6 Application development, the popularization of inflatable rheology in substations and the wide application of GIS\HGIS, SF6 inflation, gas recovery, and micro-water testing all require inflation and discharge connection devices. [0003] Use existing SF 6 The equipment charging and discharging ...

AI Technical Summary

Problems solved by technology

[0004] 1) Existing SF 6 There are many models and various types of equipment inflation and deflation devices. The connectors of products produced by different manufacturers cannot be used universally. Even the same manufacturer sometimes uses different types of connectors. Each type of equipment needs to carry inflation and deflation devices from different manufacturers when installing, overhauling, and testing. Joints and pipelines are not easy to repair and maintain the equipment;

[0005] 2) Most of the joints currently used are threaded connections. The gaskets are easily damaged and lost after repeated use, and the joints are prone to air leakage, which cannot achieve the sealing effect required for vacuuming. The pipes rotate together, which is time-consuming and labor-intensive;

[0006] 3) Existing SF 6 The inflation pipes used in the equipment’s inflation and deflation devices vary in thickness and quality, and some manufacturers even replace them with plastic oxygen pipes, which will form many cracks over time, causing potential safety hazards;

[0007] 4) In addition, the inflatable pipes of general manufacturers are not sealed, and it is easy to get damp when stored after use, and the moisture in the pipes is easy to be brought into the SF when it is used again. 6 equipment that makes SF 6 Accident caused by equipment insulation level drop

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