Gas fracturing pipe

Abstract

The utility model relates to the technical field of blasting devices, in particular to a gas fracturing pipe which comprises a blasting cylinder, a toilet paper sealing layer, an electric heating trigger module, a gas guide pipe and a sleeve bag. Through the unique design of the toilet paper sealing layer, the sealing problem of the blasting cartridge is effectively solved, and the storage safety and the blasting effect of blasting media are improved. According to the utility model, the electric heating trigger module is reasonably integrated, so that the stability and the reliability of the trigger system in a complex environment are enhanced. Due to the directional flow guide design of the air guide pipe and the sleeve bag, directional release of shock waves is achieved, the accuracy of rock crushing is improved, and energy waste is reduced. In the utility model, due to the protective packaging of the cap bag and the blasting cartridge and the application of environment-friendly materials, not only is the safety of blasting operation ensured, but also the pollution to the environment is reduced, and the requirement of sustainable development is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of blasting device, concretely is the device that utilizes carbon dioxide gas to carry out the device of fracturing operation, its main application is in the rock stratum breaking of mining exploitation, tunnel excavation etc. BACKGROUND

[0002] In some specific occasions, such as small rock mining, geological exploration or some special experimental environment, gas fracturing pipe needs to be used to realize the cracking or separation of objects. However, the existing gas fracturing pipe is usually complex in structure, high in cost, and limited in use in some special environments.

[0003] In addition, the traditional carbon dioxide fracturing pipe has low sealing reliability, uneven heating, and is easy to be damaged during transportation. In the prior art, liquid carbon dioxide is filled by relying on a metal sealing ring, which is easy to leak under long-term pressure; the heating pipe is rigidly connected with the blasting cylinder, which is easy to short circuit due to vibration; and the exposed parts are easy to be contaminated during transportation. The present application innovatively optimizes the sealing property, safety and environmental protection property by using low-cost materials such as toilet paper and bag.

[0004] Therefore, there is an urgent need for a gas fracturing pipe which is simple in structure, low in cost and widely applicable. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a kind of gas fracturing pipe, the stability of pipe body is guaranteed by optimizing the structure and material of fracturing pipe, and the manufacturing cost of fracturing pipe is saved.

[0006] To solve the above technical problems, the technical scheme provided by the utility model is as follows:

[0007] A kind of gas fracturing pipe, including blasting cylinder, toilet paper sealing layer, electric heating trigger module, gas guide pipe and bag.

[0008] The blasting cylinder is a cylindrical stainless steel cavity, which has a carbon dioxide containing cavity inside, a pressure relief hole and a threaded interface at one end of the carbon dioxide containing cavity, and an injection pipe and a valve at one side of the carbon dioxide containing cavity. The toilet paper sealing layer is formed by spirally winding a strip of toilet paper soaked in silica gel solution at the interface, with a thickness of 2-3mm.

[0009] The electric heating trigger module includes a heating pipe and an electric wire, the heating pipe has a nichrome resistance wire inside, and is wrapped with a ceramic insulating layer, and is fixed on the blasting cylinder through the threaded interface. The electric wire is an insulated wire, which passes through a reserved hole in the side wall of the blasting cylinder and is electrically connected with the heating pipe, and the interface is filled with toilet paper scraps.

[0010] The gas guide pipe is a pressure-resistant nylon hose with an inner diameter of 10mm, one end of which is connected to the pressure relief hole through a flange joint, and the other end extends into the bag, with the end being 20cm away from the opening of the bag.

[0011] The sleeve bag is a double-layered cylindrical structure, the inner layer is a flame-retardant nylon with a thickness of 0.5 mm, and the outer layer is a polyethylene anti-fouling film, which can be torn and pulled.

[0012] The utility model has the advantages of:

[0013] 1. The utility model discloses a unique toilet paper sealing layer design, effectively solve the sealing problem of the blasting cylinder, improve the storage safety of the blasting medium and the blasting effect.

[0014] 2. In the utility model, the reasonable integration of the electric heating trigger module enhances the stability and reliability of the trigger system in complex environment. The directional flow guide design of the air guide pipe and the sleeve bag realizes the directional release of the shock wave, improves the accuracy of rock breaking and reduces energy waste.

[0015] 3. In the utility model, the protective packaging of the sleeve bag and the blasting cylinder and the application of the environmental protection material not only guarantee the safety of the blasting operation, but also reduce the pollution to the environment, meet the requirements of sustainable development. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure diagram of a gas fracturing pipe in embodiment 1.

[0017] Indicated in the drawing:

[0018] 1-blasting cylinder, 11-carbon dioxide containing cavity, 12-pressure relief hole, 13-screw interface, 14-injection pipe, 15-valve, 2-toilet paper sealing layer, 3-electric heating trigger module, 31-heating pipe, 32-wire, 4-air guide pipe, 5-sleeve bag. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Embodiment 1

[0021] The utility model discloses a gas fracturing pipe, including blasting cylinder 1, toilet paper sealing layer 2, electric heating trigger module 3, air guide pipe 4 and sleeve bag 5.

[0022] The blasting cylinder 1 is a cylindrical stainless steel cavity, and a carbon dioxide containing cavity 11 is arranged in the blasting cylinder 1, the carbon dioxide containing cavity 11 is provided with a pressure relief hole 12 and a threaded interface 13 at one end, and an injection pipe 14 and a valve 15 are arranged at one side of the carbon dioxide containing cavity 11. The toilet paper sealing layer 2 is formed by spirally winding a toilet paper strip soaked in a silica gel solution at the interface, and the thickness is 2-3 mm.

[0023] The electric heating triggering module 3 comprises a heating pipe 31 and an electric wire 32, the heating pipe 31 is provided with a nichrome resistance wire in the heating pipe 31, and the heating pipe 31 is wrapped with a ceramic insulation layer, the heating pipe 31 is sleeved on the blasting cylinder 1 from the outside, and is fixed through the threaded interface 12. The electric wire 32 is an insulated electric wire, passes through a reserved hole in the side wall of the blasting cylinder 1, is electrically connected with the heating pipe 31, and is filled with toilet paper scraps at the interface.

[0024] The air guide pipe 4 is a pressure-resistant nylon hose, the inner diameter of the air guide pipe 4 is 10 mm, one end of the air guide pipe 4 is connected with the pressure relief hole 12 through a flange joint, and the other end of the air guide pipe 4 extends to the inside of the sleeve bag 5, and the tail end is 20 cm away from the opening of the sleeve bag 5.

[0025] The sleeve bag 5 is a double-layer cylindrical structure, the inner layer of the sleeve bag 5 is flame-retardant nylon with a thickness of 0.5 mm, the outer layer of the sleeve bag 5 is a polyethylene antifouling film, and the sleeve bag 5 is designed to be tearable. The tail end of the air guide pipe 4 is adhesively connected with the inner wall of the sleeve bag 5 through hot melt adhesive, so that an airtight channel is formed.

[0026] In use, first, carbon dioxide liquid is filled into the blasting cylinder, then the carbon dioxide gas is rapidly expanded by heating through the electric heating triggering module, so that high-pressure gas is generated. The high-pressure gas is injected into the sleeve bag through the air guide pipe, after the inner layer of the flame-retardant bag is expanded and broken, the gas is axially sprayed along the air guide pipe, the outer layer of the antifouling film is torn off in advance to reduce resistance, and directional release of the shock wave is realized.

[0027] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all of them should be covered in the protection scope of the utility model.

Claims

1. A gas fracturing tube, characterized in that, include: Explosion tube (1), toilet paper sealing layer (2), electric heating trigger module (3), air duct (4) and bag (5); The blasting cylinder (1) is a cylindrical stainless steel cavity with a carbon dioxide containing cavity (11) inside. One end of the carbon dioxide containing cavity (11) is provided with a pressure relief hole (12) and a threaded interface (13). An injection pipe (14) and a valve (15) are provided on one side of the carbon dioxide containing cavity (11). The toilet paper sealing layer (2) is formed by spirally winding a strip of toilet paper soaked in silicone solution around the threaded interface (13); The electric heating trigger module (3) includes a heating tube (31) and an electric wire (32). The heating tube (31) contains a nickel-chromium alloy resistance wire wrapped with a ceramic insulation layer. It is sleeved on the blasting cylinder (1) from the outside and fixed through the threaded interface (13). The electric wire (32) is an insulated wire that passes through a pre-drilled hole in the side wall of the blasting cylinder (1) and is electrically connected to the heating tube (31). The interface is filled with toilet paper scraps. The air guide tube (4) is a pressure-resistant nylon hose with an inner diameter of 10mm. One end is connected to the pressure relief hole (12) through a flange joint, and the other end extends into the inside of the bag (5). The end of the air guide tube (4) is 20cm away from the opening of the bag (5). The end of the air guide tube (4) is bonded to the inner wall of the bag (5) with hot melt adhesive to form an airtight channel.

2. The gas fracturing tube according to claim 1, wherein, The toilet paper sealing layer (2) is formed by spirally winding toilet paper strips after they have been soaked in a silicone solution.

3. The gas fracturing tube of claim 1, wherein, The heating tube (31) of the electrothermal trigger module (3) is sleeved on the rupture cylinder (1) from the outside and fixed by the threaded interface (13).

4. The gas fracturing tube of claim 1, wherein, The inner layer of the bag (5) is flame-retardant nylon, and the outer layer is polyethylene antifouling film.

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