Non-stored-pressure fire extinguishing pipe

The utility model provides a non-stored-pressure fire extinguishing pipe, which belongs to the technical field of fire extinguishing equipment and comprises a pipe body, a fire extinguishing agent, a sealing membrane, a thermal initiator, a gas production grain box, a gas production grain, a first sealing component and a second sealing component. The fire extinguishing pipe adopts a non-pressure-storage type driving mode, when a fire disaster occurs, the surrounding environment is heated, a thermosensitive line of the thermal initiator is ignited, then the thermal initiator main body ignites the gas production grain to burn, gas is generated, a sealing membrane on the gas production grain box is broken to pre-pressurize the pipe body, and when a certain temperature is reached, the gas production grain box is opened. The pipe body can self-explode and quickly release a fire extinguishing agent to extinguish fire; even if the sealing positions of the two ends of the pipe body are provided with tiny holes which