Atmospheric pressure indicating alarm device of sulfur hexafluoride ring net load switch

Abstract

The invention discloses an atmospheric pressure indicating alarm device of a sulfur hexafluoride ring net load switch gas tank, wherein the sulfur hexafluoride ring net load switch gas tank is a stainless steel sealing container which does not conduct magnetism. As being arranged inside and outside the gas tank, the atmospheric pressure indicating alarm device is divided into two parts: the part arranged inside the gas tank is a pressure sensing part, and the part positioned outside the gas tank is a pressure indicating and alarm part, wherein the pressure sensing part generates correspondingangular displacement due to the change of the pressure of the gas tank; magnet of the internal pressure sensing part is coupled with magnet arranged on an external pressure indicating rotary arm, so that an external pressure indicator can be driven to correspondingly rotate; relative rotation between a rear cam surface and a roller wheel of a microswitch is driven by the rotation of an indicationpanel installed outside the gas tank; and when reaching to a certain position, the switch is connected for alarm. The atmospheric pressure indicating alarm device eliminates the hidden danger of leakage of the gas tank, improves the sealing performance of a sulfur hexafluoride ring net load switch device, prolongs the service life of the device, and has very practical positive effects.

Description

technical field [0001] The invention relates to an air pressure indicating and alarming device, in particular to an air pressure indicating and alarming device for a sulfur hexafluoride ring network load switch. Background technique [0002] The existing inflatable switchgear has the characteristics of small size, light weight, beautiful appearance, simple structure, etc., so it is used more and more in power supply equipment, and its manufacturing difficulty is to ensure that it does not leak within the service life. The air pressure display device becomes a key. [0003] The traditional pressure display is to install a pressure gauge, which must have an interface, and there will be hidden dangers of leakage after long-term work. The pressure display in the existing sulfur hexafluoride ring network load switch cabinet must have an interface, and the interface uses a sealing ring. Improper installation of the sealing ring, aging of itself, and quality problems of the pressu...

AI Technical Summary

Problems solved by technology

[0003] The traditional pressure display is to install a pressure gauge, which must have an interface, and there will be hidden dangers of leakage after long-term work

The pressure display in the existing sulfur hexafluoride ring network load switch cabinet must have an interface, and the interface uses a sealing ring. Improper installation of the sealing ring, aging of itself, and quality problems of the pressure gauge will all cause sulfur hexafluoride The gas leakage of the ring network load switch cabinet caused power supply accidents and affected the quality of the sulfur hexafluoride ring network load switch cabinet

Moreover, the traditional pressure display does not have a leakage alarm function, and a density relay must be added, which increases the cost and increases the possibility of leakage.

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