Full-automatic combustible gas on-line monitoring tail gas ignition device

Abstract

The invention discloses a full-automatic combustible gas on-line monitoring tail gas ignition device, which comprises a ceramic base and an electric heating wire heater mounted on the upper part of the ceramic base. A jet nozzle is mounted in the center of the ceramic base, an outlet in the top end of the jet nozzle is close to the electric heating wire heater, and the bottom end of the jet nozzleis fixedly connected with a gas flow sensor through a thread. The necessary conditions of combustible gas combustion are utilized, the state of the necessary conditions is controllable on line, safecombustion of combustible gas is realized, the combustion state is monitored, and thus full-automatic combustible gas on-line tail gas ignition is achieved.

Description

technical field [0001] The invention belongs to the field of combustible gas monitoring, in particular to a fully automatic combustible gas on-line monitoring tail gas ignition device. Background technique [0002] At present, when the atmosphere sintering equipment uses flammable gas for sintering, the tail gas needs to be ignited to prevent the leakage of flammable gas. The common way is to use pulse high-voltage ignition, use instantaneous high-voltage spark ignition, and use UV ultraviolet rays in the combustion process. Monitor the flame or thermocouple to detect the temperature of the flame at the gas outlet. Due to the need for automatic safety processing, flame detection is required to determine whether the exhaust gas is leaking, so that when the flame is extinguished, the ignition is re-ignited, or the alarm is used to cut off the intake air. The detection method, UV detection is to detect the ultraviolet rays of the flame. This method has too high requirements on ...

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Problems solved by technology

[0002] At present, when the atmosphere sintering equipment uses flammable gas for sintering, the tail gas needs to be ignited to prevent the leakage of flammable gas. The common way is to use pulse high-voltage ignition, use instantaneous high-voltage spark ignition, and use UV ultraviolet rays in the combustion process. Monitor the flame or thermocouple to detect the temperature of the flame at the gas outlet. Due to the need for automatic safety processing, flame detection is required to determine whether the exhaust gas is leaking, so that when the flame is extinguished, the ignition is re-ignited, or the alarm is used to cut off the intake air. The detection method, UV detection is to detect the ultraviolet rays of the flame. This method has too high requirements on the environment. The influence of external light sources, too small flame and the pollution of the sensor lens will cause false alarms, which will cause false alarms for the intervention of subsequent automatic safety measures. Action, and the flame temperature detection of the thermocouple, due to the characteristics of the thermocouple temperature sensor, when the flame starts to burn or the flame temperature is extinguished, the heat conduction characteristics of the thermocouple cause it to sense the temperature change. It takes 10-30 seconds. For leakage The sensitivity of the measurement is not applicable and prone to dangerous probability, so inventing a new type of exhaust gas ignition device can solve the above problems

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