Dual supercritical state gas detonator

Abstract

The invention discloses a dual supercritical state gas detonator. The dual supercritical state gas detonator comprises an inner pipe, an inner pipe filling cavity, an inner pipe inflation ignition head, an outer pipe inflation head and an outer pipe. The inner pipe is internally provided with the inner pipe filling cavity. A first sealing inner cover and a second sealing inner cover are connected to the two ends of the inner pipe in a sealing manner correspondingly. The outer layer of the inner pipe is provided with the outer pipe. A first sealing outer cover and a second sealing outer cover are connected between the inner pipe and the outer pipe in a sealing manner. A sealing cavity formed by the inner pipe, the outer pipe, the first sealing outer cover and the second sealing outer cover is an outer pipe filling cavity. The outer pipe filling cavity is filled with liquid carbon dioxide or liquid nitrogen. The inner pipe filling cavity comprises a first inner cavity and a second inner cavity which are sealed and isolated through a thermoplastic sheet. The first inner cavity and the second inner cavity are filled with supercritical oxygen and supercritical state alkane correspondingly. The dual supercritical state gas detonator has the beneficial effects that the manufacturing cost is low, the reaction material mixing uniformity is high, the heat releasing efficiency is high, the transporting safety is good, and the detonation power is high.

Description

technical field [0001] The invention belongs to the technical field of blasters, in particular to a double supercritical gas blaster. Background technique [0002] Gas blasting technology is to use the vaporization and expansion of easily vaporized liquid or solid substances to generate high-pressure gas, which makes the surrounding medium expand to do work and cause fragmentation. It has the characteristics of no open flame, safety and high efficiency. [0003] Carbon dioxide gas blasters are typical blasting equipment in gas blasting technology, and are widely used in mining, geological exploration, cement, steel, electric power and other industries, subways and tunnels, municipal engineering, underwater engineering, and emergency rescue. [0004] The existing gas blaster mainly includes a vaporization liquid storage pipe and a heating detonator installed in the vaporization liquid storage pipe; the heating detonator ignites and generates heat to vaporize easily vaporized ...

AI Technical Summary

Problems solved by technology

[0006] Adopt the gas blaster of above-mentioned detonator structure, existing problem is: 1, the thermal reaction material that needs to fill in the detonator needs to carry out the processing of processes such as material mixing, mixing evenly, rolling material or bagging, filling process It is time-consuming and labor-intensive, and the manufacturing cost is high; 2. During the filling process of the detonator, the oxidant and reducing agent are prone to uneven mixing, resulting in low heat release efficiency; 3. The thermal reaction material needs to be mixed and filled in advance. If the medium temperature is too high, it will easily cause combustion or explosion, which has great potential safety hazards; 4. Due to the damp, deterioration or deformation of the detonating material, it is easy to cause squibs, and it is impossible to determine the cause of the squibs, so it cannot pass The squib method eliminates potential safety hazards; 5. The detonation method of the existing gas blaster uses a solid activator to burn to generate high temperature, which directly conducts heat to the liquid carbon dioxide, causing the liquid carbon dioxide to gasify and expand, and the heat absorption efficiency of the liquid carbon dioxide is low; 6. The detonator The heat release rate is slow, the chemical reaction is insufficient, the heat release efficiency is low, the pressure of the liquid is relatively small after gasification, and the blasting power is small; 7. After the blasting, the reactants in the detonator produce a large amount of toxic and harmful gases. , such as hydrogen sulfide, sulfur dioxide, nitrogen monoxide, nitrogen dioxide and other gases, bring relatively large poisonous pollution to the blasting site

[0008] Yet the weak point that liquid oxygen explosive exists is: 1, it can only be used in open-air operation and building road and bridge, blasting building etc. If it overflows, it will cause pit gas and coal dust explosions in the mine and cause accidents; 2. Liquid oxygen explosives must be used as soon as they are installed, generally within one hour after they are made, otherwise the liquid oxygen will lose its effectiveness when it volatilizes; 3. The charging operation of liquid oxygen explosive is complicated and the safety is poor; 4. The blasting temperature of liquid oxygen explosive is too high, which is easy to cause combustion

[0009] Due to the above shortcomings of liquid oxygen explosive technology, the research and development of liquid oxygen explosive technology is limited. At present, liquid oxygen explosive technology is rarely used

Images