Gas blasting initiator and fracturing device

Abstract

The invention discloses a gas blasting initiator and a fracturing device. The gas blasting initiator comprises a pipe body, a filling cavity, an ignition mechanism and an inflation mechanism, wherein the filling cavity is arranged in the pipe body; the pipe body is in sealing connection with the ignition mechanism and the inflation mechanism; the filling cavity is filled with supercritical oxygen and carbon-containing organic matters or reductive elementary substances; the ignition mechanism comprises a heating wire, a lead wire, a lead wire penetration hole and a sealing matrix; the heating wire is connected with the lead wire; the lead wire penetration hole is formed in the axis part of the sealing matrix; the lead wire penetrates through the lead wire penetration hole through an outer insulating layer; the inflation mechanism comprises an inflation hole, a valve rod and an inflation valve seat; the inflation hole is communicated with the inflation valve seat; a gas locking cavity is arranged at the middle of the inflation hole; the valve rod is mounted in the gas locking cavity; a connecting piece is connected between the inflation valve seat and the sealing matrix. The gas blasting initiator and the fracturing device have the advantages that the manufacture cost is low, the reaction material mixing uniformity is high, the heat release efficiency is high and the transport security is good.

Description

Technical field [0001] The invention belongs to the technical field of detonators, and particularly relates to a gas blast detonator and a cracker. Background technique [0002] Gas blasting technology uses the gasification and expansion of easily gasified liquid or solid materials to produce high-pressure gas, which causes the surrounding medium to expand and do work, and cause fragmentation. It has the characteristics of no open flame, safety and efficiency. [0003] Carbon dioxide gas blaster is a typical blasting equipment in gas blasting technology. It is widely used in mining, geological prospecting, 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 tube and a heating detonator installed in the vaporization liquid storage tube; the heating detonator ignites and generates heat to vaporize the easily vaporized ...

AI Technical Summary

Problems solved by technology

[0006] The detonator with the above structure has the following problems: 1. The thermal reactants to be filled in the detonator need to be processed by mixing, mixing, coiling or bagging, and the filling process is time-consuming. 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, and the temperature during transportation is too high. It is highly likely to cause combustion or explosion, and has a greater potential safety hazard; 4. Due to the delay of the detonating material or other situations, it is easy to appear the situation of squibs, and it is impossible to judge the cause of the squibs, so it cannot be eliminated by rowing the squibs Potential safety hazard; 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 heat release of the detonator The speed is slow, the chemical reaction is insufficient, the thermal 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 sulfur Gases such as hydrogen, sulfur dioxide, nitric oxide, and nitrogen dioxide bring relatively large poisonous pollution to the blasting site

[0007] In addition, in the existing gas blaster, when blasting occurs, the pipe body is easily split into two sections, and the ends of the split ends are easy to fly out; when the gas blaster is used for surface rock blasting, the expanded gas is released to the upper end. , leading to a reduction in rock cracking power; in the existing blasting technology, in order to avoid port leakage, the conventional method is to reserve a hole depth of more than 40cm at the blast hole for filling sand and soil, but this filling method is easy As a result, the surface rock cannot be broken and large rocks are produced, which requires secondary rock breaking in the later stage

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