A method for improving the precision of a gas density relay

Abstract

A method for improving the precision of a gas density relay is disclosed. The gas density relay comprises a housing, a base, an end seat, a Baden tube, a temperature compensating element, a signal regulating mechanism and a plurality of microswitches as signal generators. Each microswitch is a button type microswitch, and the density relay further comprises a microswitch contact triggering elementmade of an elastic material, one end of the microswitch contact triggering element is fixed in the housing, and the other end is arranged corresponding to the button of the button type microswitch and abuts on the button of each microswitch. When the gas density value changes, the Baden tube and the temperature compensation element generate displacement, and the displacement sequentially drives the microswitch contact triggering element through the signal triggering mechanism, and the position of the microswitch contact triggering element changes, so that the microswitch sends out corresponding signals. The density relay of the invention has the advantages of high precision and good contact conductivity, and can be well applied to SF6 electrical equipment.

Description

technical field [0001] The invention relates to a gas density relay, in particular to a method for improving the precision of the gas density relay. Background technique [0002] SF 6 And its mixed gas, or other environmentally friendly gas electrical products have been widely used in the power sector, industrial and mining enterprises, and promoted the rapid development of the power industry. while SF 6 The arc extinguishing medium and insulating medium of electrical products are SF 6 Gas, no gas leakage can occur. In the event of an air leak, SF cannot be guaranteed 6 Electrical products operate reliably and safely. So monitor SF 6 SF for electrical products 6 The density value is very necessary. [0003] At present, a mechanical pointer SF is generally used. 6 Gas density relay to monitor SF 6 Density, that is, when SF 6 When an electrical product leaks, the relay can alarm and lock, and at the same time display the on-site density value. The contacts of the d...

AI Technical Summary

Problems solved by technology

[0005] 1) When vibrating, there is a gap in the swing rod, and a slight change in its position will seriously affect the accuracy of the density relay

2) At the same time, it is difficult to adjust the accuracy accurately during debugging, that is, it is difficult to make high-precision density relays

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