Fluid type igniter for gas blaster, and fracturing device

Abstract

The invention discloses a fluid type igniter for a gas blaster, and a fracturing device. The igniter comprises a casing and a filling cavity located in the casing; the casing comprises a first sub-joint, a second sub-joint and a coupling head; the filling cavity comprises a reducing agent filling cavity and an oxidizing agent filling cavity; the reducing agent filling cavity is formed in the first sub-joint, and the oxidizing agent filling cavity is formed in the second sub-joint; two ends of the coupling head are in threaded and sealed connection with one end of the first sub-joint and one end of the second sub-joint or are seamlessly welded at one end of the first sub-joint and one end of the second sub-joint; the other end of the first sub-joint is connected with a liquid filling nozzle, and the other end of the second sub-joint is connected with an inflation mechanism; an isolation thermoplastic piece is mounted in the middle of the coupling head; and an electric heating wire is packaged in the isolation thermoplastic piece and is led out of the casing through a wire. The igniter has the advantages that the manufacturing cost is low, the reaction material mixing uniformity is high, the heat releasing efficiency is high and the transportation safety is good.

Description

technical field [0001] The invention belongs to the field of detonating devices, in particular to a detonating device for a fluid type 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] Existing gas blasters mainly include a vaporization liquid storage pipe and a heating detonator installed in the vaporization liquid storage pipe; the heating detonation device ignites and generates heat to vaporize...

AI Technical Summary

Problems solved by technology

[0006] The detonating device with the above-mentioned structure has the following problems: 1. The thermal reactants to be filled in the detonating device need to be processed by mixing, mixing, coiling or bagging, and the filling process is time-consuming and labor-intensive. , high manufacturing cost; 2. In the process of filling the detonating device, 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 high It is easy to cause combustion or explosion, and has a large 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 the safety cannot be eliminated by rowing the squibs. Hidden danger; 5. The existing gas blaster detonation method uses solid activator to burn to generate high temperature, directly conducts heat to liquid carbon dioxide, makes liquid carbon dioxide vaporize and expand, and its heat absorption efficiency of liquid carbon dioxide is low

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