Air inflation and ignition integrated blaster and fracturing device

Abstract

The invention discloses an air inflation and ignition integrated blaster and a fracturing device. The air inflation and ignition integrated blaster comprises a tube body, a filling cavity located in the tube body, as well as an air inflation and ignition head and a cover body respectively located at the two ends of the tube body, wherein the filling cavity is filled with supercritical oxygen and a reductive simple substance; the air inflation and ignition head comprises a plugging substrate, an air inflation hole, a sealing ball valve, a conductive contact and an electric heating wire; the air inflation hole penetrates through the plugging substrate; a sealing shrink mouth is formed in the lower part of the air inflation hole; the sealing ball valve is mounted above the sealing shrink mouth; the conductive contact penetrates through the sealing ball valve and is fixedly connected with the sealing ball valve in a clamping manner; the spherical surface of the lower part of the sealing ball valve is a rough surface; the degree of tightness of the sealing ball valve is adjusted by a sealing locking screw; a contact window, through which the conductive contact penetrates, is formed in the middle of the sealing locking screw; the conductive contact is connected with the electric heating wire by a wire; and a connecting piece is connected between the plugging substrate and the cover body. The air inflation and ignition integrated blaster has the advantages that a powder filling process is simple, the safety is high, the mixing uniformity of materials is high, and the end of the blaster is prevented from flying out.

Description

technical field [0001] The invention belongs to the technical field of detonators, and in particular relates to a charge-ignition integrated detonator and a cracker. 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 heat generation detonator ignites and gene...

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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

[0008] According to the structural description of the above-mentioned existing gas blaster, it can be seen that two holes need to be opened in the plugging head with the gas charging and lead wire structure, which are respectively the filling port for filling and discharging the easily vaporized liquid and the lead wire for leading out the lead wire The problem of adopting this kind of structure is: 1. The plugging head with inflatable and lead wire structure, in the drilling process, the process is more complicated, labor-consuming and time-consuming. Larger, the sealing process is more difficult, and the problem of air leakage is prone to occur. If the hole diameter is small, the drilling will be larger and the drilling cost will be higher; 2. The lead hole needs to be filled with sealant, which is cured after sealing, and It is easy to cause deflation under high pressure; 3. High manufacturing cost

[0009] 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 expanding gas is released from 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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