Ceramic pressure sensor and installing method thereof

Abstract

Provided are a ceramic pressure sensor and an installing method thereof. The ceramic pressure sensor comprises a connector, an O-shaped sealing ring, a ceramic core body, a compacting sleeve, and a locking buckle. The ceramic core body is packaged in the connector. The O-shaped sealing ring is arranged between the ceramic core body and the connector. The compacting sleeve is arranged over the ceramic core body and between the ceramic core body and the locking buckle. The invention also discloses the installing method of the ceramic pressure sensor. The ceramic pressure sensor is compacted through the locking buckle in a threaded manner, has structural burst pressure 5 to 8 times the ultimate pressure of the ceramic core body, and is firm and reliable in structure, good in compression resistance, easy to assemble, and beneficial to expansion of the use range and improvement in reliability. A clamping groove is not required to be disposed in the connector. The ceramic pressure sensor is easy to process. A processing dimensional deviation has little influence on a product and a low disability rate is achieved.

Description

technical field [0001] The invention relates to a ceramic pressure sensor and an installation method thereof. 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 from -40°C to 135°C, and it has the advantages of high precision, high stability, small size, and easy packaging; its electrical insulation is greater than 2KV, strong output signal, good long-term stability. 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. [0003] Existing ceramic pressure sensors (see figure 1 ) consists of joints, O-rings, ceramic cores, compression sleeve...

AI Technical Summary

Problems solved by technology

[0004] The processing size of the groove in the connector of the existing ceramic pressure sensor is high and difficult to process. The size of the groove directly affects the performance and sealing effect of the product, and it all depends on the compression force of the elastic retaining ring. The elastic retaining ring cannot guarantee the ceramic core. If the pressure is too high, the elastic retaining ring will break away from the slot, which will damage the internal structure of the sensor and cause the product to be scrapped.

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