Abstract: The movable gas volume automatic compensation device is a new type of fire rescue equipment focusing on flood disaster rescue. Its working principle is to adopt the gas volume automatic compensation method, so that the gas filling device in the rescue process can always maintain a relatively stable rated working pressure, ensure the best efficiency of the device, and effectively make up for the air leakage accident caused by sharp objects. It can improve the effectiveness of combat training and reduce the potential safety hazards of combat training.

Key words: fire rescue; automatic gas compensation; inflatable equipment; flood disaster