High-precision sulfur hexafluoride gas density relay

Abstract

The invention discloses a high-precision sulfur hexafluoride gas density relay which is good in shock resistance, high in precision, good in electrical performance, and long in service life. The high-precision sulfur hexafluoride gas density relay comprises a signal control part and an indicating value displaying part which are arranged in a shell body, wherein the signal control part and the indicating value displaying part are relatively independent, the indicating value displaying part comprises a display bourdon tube, a display end base, a machine core and a pointer, one end of the display bourdon tube is welded on a base, the other end of the display bourdon tube is welded on the display end base, and the shell body is an airtight air chamber and is filled with sulfur hexafluoride gas used for temperature compensation; the signal control part comprises a control bourdon tube, the base, a control end base, a plurality of signal generators and a signal adjusting mechanism, one end of the control bourdon tube is fixed on the base, the other end of the control bourdon tube is fixed on the control end base, the signal adjusting mechanism is arranged on the control end base, and the signal generators are installed on the base and are triggered to move by the signal adjusting mechanism.

Description

technical field [0001] The invention relates to a high-precision sulfur hexafluoride gas density relay. Background technique [0002] At present, oil-free gas density relays with micro switches as contacts are commonly used to monitor the gas density of sulfur hexafluoride in electrical equipment of sulfur hexafluoride (see figure 1 ), although the microswitches used in this sulfur hexafluoride gas density relay have the advantages of good electrical performance, but since the microswitches all have operating arms 1011, 1021, 1031, and their displacement is limited, the accuracy is poor . What is more prominent is that the length of the contact operating arm 12 on its structure is relatively long, and it is a cantilever beam. When the sulfur hexafluoride switch is operated, the contact operating arm 12 vibrates greatly, which in turn causes the gas density of sulfur hexafluoride to increase. The relay malfunctions, or even destroys the micro switch, and completely loses it...

AI Technical Summary

Problems solved by technology

However, this kind of gas density switch does not have a display part of the density indication, so it is difficult to popularize in practical applications.

Because there is no display of density indication value, on the one hand, it is impossible to find the early gas leakage phenomenon. If the sulfur hexafluoride electrical switch leaks, the alarm signal will be issued only when the gas drops to the alarm value. Sulfur hexafluoride gas has leaked a lot. On the other hand, because the greenhouse effect of sulfur hexafluoride gas is more than 20,000 times that of carbon dioxide gas, if the leakage of sulfur hexafluoride electrical equipment is not dealt with in time, the reduction of sulfur hexafluoride gas Continuing to discharge into the atmosphere will greatly increase greenhouse gas emissions, which is very detrimental to environmental protection

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