Pressure-resistant and wear-resistant type ceramic pressure sensor

Abstract

The invention discloses a pressure-resistant and wear-resistant type ceramic pressure sensor, comprising a sensor shell, a pressure core body, a gland, an anti-compression bulge, a silica gel coatingand a cable; the pressure core body is arranged in the sensor shell, a first sealing gasket is arranged between the pressure core body and the sensor shell, one side of the pressure core body is sunken into a cavity, the other side of the pressure core body is protruded outwards, the first sealing gasket is arranged between the pressure core body and the sensor shell, and a second sealing gasket is arranged at the joint between the gland and the pressure core body; due to the arrangement of the two sealing gaskets, the impact resistance is greatly enhanced, due to the silica gel coating on theouter side of the sensor shell, the sensor shell is protected and abrasion and damage caused by collision are reduced; especially, the corners of the sensor protrude out and are prone to collision, the arranged damping bulge has elasticity, so that the internal components of the sensor are well protected from being damaged due to too large impact force, the adhesive is a high-temperature metal adhesive and is high in high temperature resistance, high in bonding strength and resistant to corrosion.

Description

technical field [0001] The invention relates to a ceramic pressure sensor, in particular to a pressure-resistant and wear-resistant ceramic pressure sensor. Background technique [0002] Ceramic is a recognized highly elastic, corrosion-resistant, wear-resistant, shock- and vibration-resistant material. The thermal stability of ceramics and its thick film resistance can make its working temperature range as high as -40 ~ 135 ℃, and it has high precision and high stability of measurement. The electrical insulation degree is >2kV, the output signal is strong, and the long-term stability is good. High-performance, low-price ceramic sensors will be the development direction of pressure sensors, and there is a tendency to fully replace other types of sensors in European and American countries. In China, more and more users use ceramic sensors to replace diffused silicon pressure sensors. A pressure sensor is a device or device that can sense pressure signals and convert the ...

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to overcome the defects of insufficient pressure resistance and easy damage of existing ceramic pressure sensors, and provide a pressure-resistant and wear-resistant ceramic pressure sensor, thereby solving the above problems

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