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Spring force sensor

A sensor and spring force technology, which is applied in the field of force sensors, can solve the problems that the pressure test cannot be directly used, and the spring volume is large.

Inactive Publication Date: 2019-08-16
南京元感微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Because the spring in the circuit breaker has a large volume, bears strong pressure, and relies on solids to transmit pressure, the traditional pressure / pressure test methods suitable for liquid / gas cannot be directly used for its pressure test

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 , figure 2 and image 3 As shown, the first aspect of the present invention relates to a spring force sensor 100 , the spring force sensor 100 includes a sensor body 110 , an elastic membrane 120 and a pressure transmitter 130 . The sensor body 110 includes a first surface 111 and a second surface 112 oppositely arranged along its thickness direction, the first surface 111 is used to receive the spring force to be measured, and the second surface 112 is provided with a liquid chamber 112a. The elastic diaphragm 120 is located on the second surface 112 and seals the liquid chamber 112a, and bears the pressure of the liquid in the liquid chamber 112a. The pressure transmitter 130 communicates wit...

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Abstract

The invention provides a spring force sensor. The spring force sensor comprises a sensor body, an elastic membrane and a pressure transmitter, wherein the sensor body comprises a first surface and a second surface which are oppositely arranged in the thickness direction; the first surface is used for receiving a spring force to be measured; the second surface is provided with a liquid cavity; theelastic membrane is positioned on the second surface, seals the liquid cavity and bears a liquid pressure in the liquid cavity; the pressure transmitter communicates with the liquid cavity and is usedto measure the liquid pressure in the liquid cavity; and the elastic membrane is made of rubber, a plastic high-molecular polymer material or a multilayer elastic composite material. By virtue of theliquid cavity, the elastic membrane and the pressure transmitter, accurate and real-time measurement of the spring force can be realized; in addition, the elastic membrane made of the rubber, the plastic high-molecular polymer material or the multilayer elastic composite material can greatly reduce the influence of the temperature on the spring force sensor, so that the accuracy of measuring thespring force by the spring force sensor is further improved.

Description

technical field [0001] The invention belongs to the technical field of force measuring sensors, in particular to a spring force sensor, in particular to a spring force sensor used for a power circuit breaker. Background technique [0002] The power circuit breaker is a key device to maintain the normal operation of power equipment. The mechanical spring type power circuit breaker has the advantages of reliable operation and convenient maintenance, and is widely used in high-voltage power circuit breakers. Large springs used in circuit breakers are often under enormous pressure, causing them to move rapidly to perform the switching action. However, long-term exposure to huge pressure will easily lead to spring creep, weaken the elasticity, cause the switching speed to drop, and the three-phase / multi-channel switch action is out of sync. In severe cases, the switch action will fail, causing serious electrical accidents. In order to improve the reliability of the circuit break...

Claims

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Application Information

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IPC IPC(8): G01L1/02G01L1/04
CPCG01L1/02G01L1/04
Inventor 柳俊文史晓晶
Owner 南京元感微电子有限公司
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