Opposite-inflatable air blasting device

Abstract

The invention discloses an opposite-inflatable air blasting device. The device comprises an inner pipe, an inner pipe inflatable conductive head, an outer pipe inflatable head and an outer pipe, the two ends of the inner pipe are connected with a first seal inner cover and a second seal inner cover in a sealed mode respectively, the outer pipe is arranged on the outer layer of the inner pipe, the first seal outer cover and the second seal outer cover are connected between the inner pipe and the outer pipe, a seal cavity formed between the inner pipe and the outer pipe is an outer pipe filling cavity, the inner pipe inflatable conductive head is arranged at the axial core of the first seal inner cover, a first radial air hole is formed in the second seal inner cover in the radial direction, the axial core of the second seal inner cover is provided with a second installation cavity and an axial through hole which are communicated with each other, the axial through hole penetrates through the first radial air hole, a conductive connector is installed in the second installation cavity, the first radial air hole is formed in the second seal outer cover in the radial direction, and an outer pipe inflatable head is arranged on the inner side face of the second seal outer cover. The device has the advantages of being low in manufacturing cost, high in heat release efficiency, good in transport safety and large in blast power.

Description

technical field [0001] The invention belongs to the technical field of blasters, in particular to a counter-filling gas blasting device. 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 vaporiz...

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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, nitroge

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