Displacement sensor protecting device and method

Abstract

The invention discloses a displacement sensor protecting device and method, and belongs to the technical field of sensor protecting devices. The displacement sensor protecting device comprises a protective hood, quick connectors, a seamless pipe and a pipeline, wherein the seamless pipe is connected with the protective hood and communicates with the inside of the protective hood; the quick connectors comprise a male connector and a female connector; one of the male connector and the female connector is connected with the pipeline, and the other one of the male connector and the female connector is connected with the seamless pipe. The displacement sensor protecting method comprises the following steps of covering a displacement sensor by utilizing the protective hood of the protecting device, and fixing the protective hood; feeding cooling air into the pipeline; and feeding the cooling air into the protective hood through the quick connectors. Through the adoption of the device and method, disclosed by the invention, the environment temperature of the displacement sensor during working can be guaranteed, and external water and steam can be effectively prevented from invading the displacement sensor, so that the phenomenon that because the external water and the steam invade the displacement sensor, the service life of the displacement sensor is shortened can be avoided; besides, the displacement sensor protecting device can be quick to dismount and convenient to mount and repair, and is particularly suitable for protecting displacement sensors working under various high-temperature and high-humidity environments.

Description

technical field [0001] The invention specifically relates to a displacement sensor protection device and a protection method, belonging to the technical field of sensor protection devices. Background technique [0002] In continuous casting of wide and thick slabs, the dynamic soft reduction technology is especially important to improve the internal quality of the slab and solve the key points of center segregation and center looseness. The accuracy of the reduction amount control in the dynamic soft reduction technology depends on Stability and sensitivity of the displacement sensor. The displacement sensor is an important sensitive electrical component in the hydraulic servo system. It is installed on the sector hydraulic cylinder to detect the change of the stroke of the hydraulic cylinder and output the signal to the servo valve to realize the closed-loop control of the hydraulic system. In order to make the displacement sensor in the production To stabilize the working...

AI Technical Summary

Problems solved by technology

[0004] The heat insulation effect is poor, and the displacement sensor is greatly affected by the environment during actual use. The operating temperature of the electronic components such as the circuit board and the contacts in the head of the displacement sensor exposed outside the sector hydraulic cylinder is below 75°C. The temperature of the hot casting slab is more than 900°C, and the heat radiation is strong. In addition, the ambient temperature is high. The material of the displacement sensor protective cover is made of steel and the heat insulation effect is poor. The heat in the cover cannot be dissipated, which makes the service life of the displacement sensor greatly In addition, because the displacement sensor works in a protective cover with poor heat insulation effect for a long time, it has a great impact on the data transmission and stability of the displacement sensor, and the reliability is poor

[0005] The sealing performance is poor. The seal between the cylindrical displacement sensor protective cover and the end center of the hydraulic cylinder of the continuous casting machine segment is a rubber pad. The sealing performance is poor. The large amount of water vapor generated by the dynamic water distribution in the segment during production is extremely It is easy to intrude into the protective cover of the displacement sensor and erode the contacts of the displacement sensor, resulting in the failure of the sensing element of the displacement sensor

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