Device for detecting active defects of fixed gas cylinders in fire extinguishing system

The utility model relates to a device capable of detecting active defects of fixed gas cylinders in a fire extinguishing system in advance. The device adopts the structure that each pressurizing nozzle in a loading system is connected with one gas cylinder jaw in a gas cylinder group through hoses; sensors are arranged at the top and the bottom of each gas cylinder; signal output lines of the sensors pass through a protective wall to be connected with a signal input end of a sound emission instrument. The device has the advantages that firstly, the active defects of gas cylinders, particularly active defects of seamless gas cylinder used for perennially storing gas, can be effectively detected, so that a bottle burst phenomenon can be avoided; secondly, the detection is comprehensive, the reliability is high, and missed detection areas of the gas cylinders can be avoided.