The present invention discloses a combined automatic anti-explosion method for a gas drainage pipeline, comprising specific steps of: preparation of an anti-explosion installation piping; connection of the installation piping and the gas drainage pipeline; assembly of a porous foam material and an automatic control valve; installation of an automatic powder-spraying device and a signal analyzer; installation of a temperature sensor and a pressure sensor; and signal processing and automatic anti-explosion. According to the present invention, the porous foam material is located in a bottom groove of an arched pipeline when no gas explosion occurs in the gas drainage pipeline, without affecting the extraction effect of the gas drainage pipeline. If a gas explosion occurs, the present invention blocks the pipeline with the porous foam material due to its fire resistance and pressure reduction performances, and the automatic powder-spraying device sprays a certain amount of a dry powder explosion suppressant to reduce the explosion overpressure generated in the gas explosion process and isolate the propagation of flame, so that the safety performance of the gas drainage pipeline is ensured, and thus the safety production of coal mines can be ensured.

The present invention discloses a combined automatic anti-explosion method for a gas drainage pipeline, comprising specific steps of: preparation of an anti-explosion installation piping; connection of the installation piping and the gas drainage pipeline; assembly of a porous foam material and an automatic control valve; installation of an automatic powder-spraying device and a signal analyzer; installation of a temperature sensor and a pressure sensor; and signal processing and automatic anti-explosion. According to the present invention, the porous foam material is located in a bottom groove of an arched pipeline when no gas explosion occurs in the gas drainage pipeline, without affecting the extraction effect of the gas drainage pipeline. If a gas explosion occurs, the present invention blocks the pipeline with the porous foam material due to its fire resistance and pressure reduction performances, and the automatic powder-spraying device sprays a certain amount of a dry powder explosion suppressant to reduce the explosion overpressure generated in the gas explosion process and isolate the propagation of flame, so that the safety performance of the gas drainage pipeline is ensured, and thus the safety production of coal mines can be ensured.

1. Technical effect Increasing the quick action, efficiency and reliability of currently available explosion protection systems. 2. Essence of application The proposed explosion protection system contains an explosion detector and a shock wave damping agent discharge device. The detector consists of overpressure and flame sensors, an identification module and an electromagnetic signal wireless transmitter. The discharge device contains a container filled with damping agent. 3. Field of use Protection of infrastructural and industrial facilities from non-authorized and, terrorist explosions; localization of methane explosion energy in coal mines.

1. Technical effect Increasing the quick action, efficiency and reliability of currently available explosion protection systems. 2. Essence of application The proposed explosion protection system contains an explosion detector and a shock wave damping agent discharge device. The detector consists of overpressure and flame sensors, an identification module and an electromagnetic signal wireless transmitter. The discharge device contains a container filled with damping agent. 3. Field of use Protection of infrastructural and industrial facilities from non-authorized and, terrorist explosions; localization of methane explosion energy in coal mines.