A gas pressure detector

Abstract

The present invention relates to the technical field of detection equipment, in particular to a gas pressure detector, which includes: a body; an elastic vent tube including a closed end and an open end, the elastic vent tube is bent and arranged on the body; a connecting piece, and The closed end of the elastic air pipe is connected; the rotating assembly includes a rotating shaft arranged on the body, a pointer arranged on the rotating shaft, and a rotating member sleeved on the rotating shaft. The end of the connecting member away from the elastic air pipe and The rotating part is eccentrically connected; the error adjustment assembly includes the adjusting part and the elastic buffer roll which is sleeved outside the rotating shaft and arranged in a spiral shape, the inner end of the elastic buffering roll is fixedly connected with the rotating part, one end of the adjusting part is connected connected, and the other end of the adjusting member abuts against and fits with the side wall of the elastic buffer roll. The gas detector of the invention can offset the influence of temperature on the pressure of sulfur hexafluoride gas, and can detect accurate air pressure values ​​under different working environment temperatures.

Description

technical field [0001] The invention relates to the technical field of detection equipment, in particular to a gas pressure detector. Background technique [0002] Sulfur hexafluoride (SF6) has good electrical insulation performance and excellent arc extinguishing performance. Its electric strength is 2.5 times that of nitrogen under the same pressure, its breakdown voltage is 2.5 times that of air, and its arc extinguishing ability is 100 times that of air. , is a new generation of ultra-high voltage insulating dielectric material superior to that between air and oil. Because sulfur hexafluoride has good insulation performance and arc extinguishing performance, it is widely used in electrical equipment such as circuit breakers, high-voltage transformers, gas-enclosed combined capacitors, high-voltage transmission lines, and transformers. [0003] When the amount of sulfur hexafluoride gas in the sulfur hexafluoride electrical equipment is too low, that is, when the insulat...

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Problems solved by technology

[0004] However, since the rated operating temperature of the ordinary air pressure detector is 20 degrees Celsius, and the working environment temperature of the equipment is sometimes not equal to the rated operating temperature of the air pressure detector, the actual working environment temperature will be higher or lower than the rated temperature of the air pressure detector. Working temperature, while the gas pressure of sulfur hexafluoride gas is greatly affected by temperature. When the working environment temperature is high, the gas pressure detected by an ordinary barometric pressure detector is higher than that at the rated temperature. The air pressure value detected under the conditions should be high, so the use of ordinary air pressure detectors will cause detection errors, and it is easy to cause accidents such as short circuit, grounding or rupture of the explosion-proof membrane caused by insufficient sulfur hexafluoride in the equipment.

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