Thermosensitive detonating tube

Abstract

The invention discloses a thermosensitive detonating tube which comprises a base, a nut, a propellant cavity A, an aluminum foil A, an aluminum foil B, a propellant cavity B and a gasket, wherein the exterior of the base is provided with an outside thread, the interior of the base is divided into two parts by an interlayer with a small hole in the middle, one part of the base is provided with an inner thread and the propellant cavity A, and the nut is matched with the inner thread; the propellant cavity A is positioned between the nut and the interlayer, the other part of the base is provided with the propellant cavity B, and the aluminum foil A and the aluminum foil B are respectively arranged on the two sides of the interlayer; one end, positioned on the base, of the propellant cavity B is provided with a propellant hole which is communicated with the aluminum foil B, and the gasket is blocked on the inner side of the propellant hole. According to the thermosensitive detonating tube, under extreme environments such as fire disaster, the inner propellant is burnt to produce high-pressure gases, so that two end bottoms of the thermosensitive detonating tube and shells of a high-pressure gas tank, a gas bottle and the like are broken, a gas valve is driven to open a leakage passage, the gases in the gas tank and the gas bottle are discharged, and physical explosion is avoided.

Description

technical field [0001] The invention relates to the technical field of pyrotechnics, in particular to a heat-sensitive squib. Background technique [0002] Under abnormal conditions such as fire, the thermal expansion of gas in high-pressure gas tanks, cylinders, etc. may cause a physical explosion, causing greater damage to the surrounding environment, facilities and personnel. In order to avoid this situation, it is necessary to automatically release the gas to reduce the internal pressure when the gas in the high-pressure gas tank, gas cylinder, etc. reaches a certain pressure. Commonly used mechanical automatic pressure relief valves have insensitivity, mechanical failures, etc. that affect reliable automatic pressure relief, and cannot completely avoid damage to the surrounding environment, facilities, and personnel caused by high-pressure gas tanks and cylinders under abnormal conditions such as fire. security threat. Contents of the invention [0003] The inventio...

AI Technical Summary

Problems solved by technology

Commonly used mechanical automatic pressure relief valves have insensitivity, mechanical failures, etc. that affect reliable automatic pressure relief, and cannot completely avoid damage to the surrounding environment, facilities, and personnel caused by high-pressure gas tanks and cylinders under abnormal conditions such as fire. security threat

Images