Sealed gas cylinder for detecting performance of gas alarm and gas cylinder inflating device

The utility model relates to the technical field of laser type gas alarm self-detection, in particular to a sealed gas cylinder for gas alarm performance detection and a gas cylinder inflation device.The sealed gas cylinder comprises a cylinder body, a gas inlet pipe, an exhaust pipe and a sealing mechanism, the cylinder body is made of a transparent material, laser can penetrate through the cylinder body, and a containing cavity used for being filled with gas to be detected is formed in the cylinder body; the air inlet pipe is arranged on the side wall of the bottle body and communicated with the containing cavity, and the exhaust pipe is arranged on the side wall of the bottle body and communicated with the containing cavity; and the sealing mechanisms are arranged on the air inlet pipe and the exhaust pipe. The laser type gas alarm has the effect of facilitating self-detection of the laser type gas alarm. 本申请涉及激光型气体报警器自检测的技术领域，尤其是涉及一种气体报警器性能检测用密封气瓶及气瓶充气装置，其包括瓶体、进气管、排气管和密封机构，所述瓶体为透明材质可激光穿透且形成用于填充待检测气体的容纳腔；所