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SF6 gas density switch capable of carrying out temperature compensation on multiple different density values

A temperature compensation, gas density technology, applied in the direction of electrical switches, electrical components, circuits, etc.

Pending Publication Date: 2019-09-24
上海新远仪表厂有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to provide a SF6 gas density switch capable of temperature compensation for multiple different density values, which mainly solves the multi-point temperature compensation problem of the SF6 gas density switch in use, and makes it meet GB / T22065- 2006 national standard and DL / T 259-2012 power industry standard

Method used

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  • SF6 gas density switch capable of carrying out temperature compensation on multiple different density values
  • SF6 gas density switch capable of carrying out temperature compensation on multiple different density values
  • SF6 gas density switch capable of carrying out temperature compensation on multiple different density values

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Embodiment 1

[0034] see Figure 2-4 , this example discloses a kind of SF6 gas density switch that can carry out temperature compensation to a plurality of different density values, and it comprises the spring tube 60 of pressure sensing element, and the free end of this spring tube 60 is connected with one end of temperature compensation plate 70, and this temperature compensation The other end of the sheet 70 is connected to the sector gear on the movement 80 of the transmission element, and the center gear shaft of the movement 80 is provided with the pointer 50; during operation, temperature compensation is performed on a SF6 gas density value (such as rated pressure) through the temperature compensation sheet 70 . Specifically, the other end of the temperature compensation sheet 70 is connected to the gear on the movement 80 through a rack structure, and the pointer 50 is set on the movement 80 and driven coaxially by the gear on the movement 80 . The spring tube 60 in the SF6 gas de...

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Abstract

The invention discloses an SF6 gas density switch capable of carrying out temperature compensation on multiple different density values, and the switch comprises a pressure sensing element spring tube, wherein a free end of the spring tube is connected with one end of a temperature compensation sheet, the other end of the temperature compensation sheet is connected with a sector gear on a transmission element movement, and a central gear shaft of the movement is provided with a pointer. During working, the temperature compensation is carried out on an SF6 gas density value through the temperature compensation sheet. The SF6 gas density switch is characterized in that the SF6 gas density switch is further provided with an electric contact, a wire spring on the electric contact adopts a bimetallic strip which is bent along with the change of ambient temperature, and temperature compensation of a contact density value is corrected through the bimetallic strip. The multi-point temperature compensation problem of the SF6 gas density switch in use is solved, so that the switch meets the GB / T 22065-2006 national standard and the DL / T 259-2012 electric power industry standard at the same time.

Description

technical field [0001] The invention relates to the field of electrical switches, in particular to an SF6 gas density switch capable of temperature compensation for multiple different density values. Background technique [0002] SF6 (sulfur hexafluoride) gas density switch is widely used in high-voltage circuit breakers, high-voltage transformers, high-power transformers and other SF6 electrical engineering equipment to monitor and control the density of SF6 gas in the airtight container of SF6 electrical engineering equipment. The density value of SF6 gas is an important index for the insulation and arc extinguishing of SF6 electrical engineering equipment. Therefore, the correctness and reliability of the indication value and contact value of SF6 gas density switch are related to whether SF6 electrical engineering equipment can operate normally and safely on the national grid. [0003] In SF6 electrical engineering, the pressure value at +20°C is usually used to represent...

Claims

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Application Information

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IPC IPC(8): H01H35/28H01H35/36
CPCH01H35/28H01H35/36
Inventor 叶平张伟顾敏
Owner 上海新远仪表厂有限公司
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