Large power heat gradient chemical gas phase infiltration process system monitoring device and method

Abstract

The invention discloses a large power heat gradient chemical gas phase infiltration process system monitoring device and method, wherein the signal collected by a temperature sensor, a pressure sensor, an element damage detector, a methane signal detector and a flow gauge is transferred to a monitoring computer, which outputs two paths of signal simultaneously, one path of the signal is transferred to the display, the other path of the signal controls a pulse blocking relay and an intermediate relay through a D / O converter and a drive amplifying circuit, thus controlling the pulsed triggering circuit and the vacuum switch relay for stopping the rectification circuit or the high-voltage switch. The invention also discloses the method for monitoring the device.

Description

technical field [0001] The invention relates to a thermal gradient chemical vapor permeation process system monitoring device, and also relates to a monitoring method of the monitoring device. Background technique [0002] Thermal gradient chemical vapor infiltration process TCVI (Thermal-Gradient Chemical Vapor Infiltration, hereinafter referred to as TCVI) is an efficient process for preparing carbon-based and ceramic-based composite materials, especially carbon / carbon composite materials. [0003] The existing thermal gradient chemical vapor infiltration process system control device includes a pulse trigger circuit 19, a rectifier circuit 22, a voltage regulating transformer 23, and a high-voltage switch 24. During the deposition process of the high-power TCVI process, the high-voltage switch 24 is first connected. The high voltage is transformed into a voltage of 6-42V and a current of 0-37500A through the voltage regulating transformer 23 and the rectifier circuit 22 t...

AI Technical Summary

Problems solved by technology

[0004] The existing thermal gradient chemical vapor infiltration process system control device is completely manual operation, requiring operators to be on duty 24 hours a day, and regularly record the operating parameters of the process system. Once an abnormal situation occurs in the process operation, the operator needs to use Cutting off the rectifier circuit or high-voltage switch circuit by manual operation, the labor intensity of the operator is heavy, and the responsibility is heavy. Once a mistake is made, it will cause heavy losses.

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