Plug-in type gas blaster

Abstract

The invention discloses a plug-in type gas blaster. The plug-in type gas blaster comprises an inner tube, an inner tube filling cavity, an ignition mechanism, an inner tube gas inflation mechanism and an outer tube. The inner tube is internally provided with the inner tube filling cavity. A first sealed inner cover and a second sealed inner cover are connected to the two ends of the inner tube in a sealed manner correspondingly. The outer tube is arranged on the outer layer of the inner tube. A first sealed outer cover and a second sealed outer cover are connected between the inner tube and the outer tube in a sealed manner. The ignition mechanism and the inner tube gas inflation mechanism are mounted on the first sealed inner cover or the second sealed inner cover. The first sealed outer cover or the second sealed outer cover is provided with an outer tube gas inflation mechanism. A seal cavity formed between the inner tube and the outer tube is an outer tube filling cavity. The inner tube filling cavity is filled with supercritical oxygen and carbon-containing organic matter. The outer tube filling cavity is filled with liquid matter easy to gasify such as liquid carbon dioxide or liquid nitrogen. The plug-in type gas blaster has the beneficial effects of being low in manufacturing cost, high in reaction material mixing uniformity, high in heating efficiency, good in transportation safety and high in blasting power.

Description

technical field [0001] The invention belongs to the technical field of blasters, in particular to a plug-in 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 substances in...

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

[0010] In addition, since the lead wire of the conventional detonator contains two exposed terminals, the wiring needs to be connected separately, and the wiring process takes a long time; in addition, the exposed terminals are prone to the risk of electrostatic contact, and there is a risk of electrostatic detonation

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