Combustible gas detection alarm

The invention provides a combustible gas detection alarm. The combustible gas detection alarm comprises a gas suction pipeline, a combustible gas detection alarm host, a dustproof filter screen and aharmful gas absorption film, wherein the dustproof filter screen and the harmful gas absorption film are sequentially arranged in the gas suction pipeline, and sucked gas sequentially passes through the dustproof filter screen and the harmful gas absorption film and enters the combustible gas detection alarm host to be detected. By arranging the harmful gas absorption film, corrosive harmful gas can be absorbed, and corrosion damage of detection elements of the detector and catalyst poisoning are avoided, and therefore, the service life of the combustible gas detector is prolonged. 本发明提供了一种可燃气体检测报警器，包括气体吸入管道、可燃气体检测报警器主机、防尘滤网及有害气体吸收膜。防尘滤网、有害气体吸收膜依次设置于气体吸入管道中，吸入气体依次通过防尘过滤网、有害气体吸收膜，进入可燃气体检测报警器主机检测。通过设置有害气体吸收膜，能够吸收腐蚀性有害气体，避免检测器检测元件腐蚀损坏及催化剂中毒，从而提高可燃气体检测器的工作寿命。