Signal picking device for local vibration sensing and monitoring of wall of coke chamber in decoking process, and installation method

Abstract

The invention provides a signal picking device for the local vibration sensing and monitoring of a wall of a coke chamber in a decoking process, and the device comprises a sensor installation component, and also comprises a hollow vibration conduction tube body. One end of the hollow vibration conduction tube body is fixedly connected with the wall of the coke chamber, and the other end of the vibration conduction tube body is connected with a vibration sensitive film and an installation component for the vibration sensitive film. Meanwhile, the other end of the vibration conduction tube body is connected with the sensor installation component. The interior of the vibration conduction tube body is an air cavity which is communicated with the wall of the coke chamber and the vibration sensitive film, and is isolated with the outside. The vibration conduction tube body is fixed on a coke chamber working platform through a fixing support. According to the invention, because a sensor does not contact with the wall of the coke chamber, the device avoids the direct contact between the sensor and the wall of the coke chamber with the high temperature 500 DEG C during coke generation, reduces the high temperature of the wall of the coke chamber from affecting the collection of a vibration signal, enables the collected vibration signal to be more sensitive, is convenient to install, and is reliable for long-time use.

Description

technical field [0001] The invention belongs to the field of coking tower decoking, and in particular relates to a signal pickup device and an installation method for monitoring the local vibration of the tower wall during the coking tower decoking process. Background technique [0002] At present, in the delayed coking process, the wall temperature of the coke tower in the raw coke process stage is as high as nearly 500 ° C, and the radius of the tower wall increases by about 50 mm. , the tower wall temperature will drop to about 50°C. In the monitoring system of coking tower decoking status in the petrochemical industry, in the utility model patent "sensor installation bracket for hydraulic coke cutting coke thickness detection system" (authorization number CN202083365U), piezoelectric sensors are used to collect vibration signals. The installation method The vibration signal of the tower wall is transmitted to the sensor through the direct contact of the ejector rod on t...

AI Technical Summary

Problems solved by technology

Since the ejector pin is a rigid member with limited temperature resistance, this installation method not only reduces the service life of the ejector pin and the sensor in the long-term and large-scale high and low temperature alternating environment of the coke tower, but also reduces the life of the coke tower tower during the coke production process. The expansion of the wall will also destroy the installation device, so that the local vibration signal of the tower wall cannot be accurately picked up

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