Underwater liquid oxygen explosion pipeline aggregate and manufacturing process thereof

Abstract

The underwater liquid oxygen explosion pipeline assembly comprises a cracking device, an exhaust pipe, a liquid injection pipe, an electric ignition device and a biomass fuel core body, the liquid injection pipe and an ignition wire are assembled in the exhaust pipe in a centralized mode, the liquid injection pipe and the exhaust pipe are round pipes made of macromolecular polyethylene or nylon 12 materials, and the electric ignition device is connected with the cracking device. The exhaust pipe is seamlessly connected with a pipe cap of the fracturing device, waterproof sealing performance is achieved, the fracturing device is matched with a related threading device, the exhaust pipe is seamlessly connected with the pipe cap of the fracturing device in a hot melting welding mode, waterproof sealing performance is achieved, the fracturing device is tried under the underwater liquid oxygen gas explosion scene condition, gas explosion operation efficiency is high, operability is extremely high, the assembled fracturing device is safe and reliable, and a pipeline body is safe and concentrated. The gas explosion effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater liquid oxygen explosion, and particularly relates to an underwater liquid oxygen explosion pipeline assembly and a manufacturing process thereof. Background Art

[0002] With the wide application of engineering technology, underwater blasting is an important part of engineering blasting. In the construction of national economic construction and national defense projects, underwater blasting is widely used in engineering construction fields such as port and wharf construction, shipyard construction, waterway dredging, water conservancy and hydropower, road and bridge, and underwater pipeline laying. Compared with general explosive detonator blasting, although both can break reef rock masses, underwater liquid oxygen explosion has its inherent disadvantages, such as low detonation velocity, small brisance, and low power. The destruction of reefs by liquid oxygen explosion mainly relies on the expansion of gas. There are many equipment used at the liquid oxygen explosion site, the process is complex, the operation technical difficulty is large, and the efficiency is low. Especially in each underwater liquid oxygen explosion cracker, at least the following three groups of pipelines need to be configured: one liquid injection pipe, one exhaust pipe, and one set of ignition wires. The ignition wires must also extend out of the water surface by a certain length to connect and form a network with the wires of other blast holes. If the three groups of pipelines are independent of each other, three groups of pipelines need to extend out of the cracker tube body, and it is very difficult to solve the airtightness of the underwater tube body; there are many processes that need to be in contact with the pipelines during underwater liquid oxygen explosion reef operations, such as pipe laying, plugging, lifting the sleeve, extracting the pipeline, centrally fixing the pipeline to the floating operation platform, pipeline connection and networking, etc., and the pipeline must not be damaged during the operation process, and mud and other sundries must not enter the liquid injection pipe and the exhaust pipe; and a key point is that if the liquid injection pipe is directly in contact with the water body, during the liquid oxygen injection process (generally lasting about 10 - 20 minutes), under the influence of heat conduction of the surrounding water body and other high-temperature media (compared with the low temperature of liquid oxygen at -183 °C, the normal temperature of other media is high temperature), the temperature of the exhaust pipe and the liquid injection pipe materials rises, and the liquid oxygen vaporizes, that is, the utilization rate of liquid oxygen is reduced, affecting the poor effect of liquid oxygen explosion. Currently, there are problems such as messy connection pipelines for underwater liquid oxygen explosion reef, cumbersome operations, easy damage to pipelines, and easy heat vaporization of liquid oxygen. Summary of the Invention

[0003] The present invention provides an underwater liquid oxygen explosion pipeline assembly and a manufacturing process thereof. The exhaust pipe is used to centrally assemble the liquid injection pipe and the ignition wires, and is equipped with relevant wire threading devices. The exhaust pipe is seamlessly hot melt welded to the pipe cap of the cracker, with waterproof airtightness. After being tested under multiple underwater liquid oxygen explosion scenario conditions, the explosion operation efficiency is high, the operability is extremely strong, the assembled cracker is safe and reliable, the pipelines are safely concentrated, and the explosion effect is good.

[0004] To solve the above problems, the present invention provides an underwater liquid oxygen blasting pipeline assembly and its manufacturing process, which includes a fracturer, an exhaust pipe, a liquid injection pipe, an electric ignition device, and a biomass fuel core. The electric ignition device includes an electric ignition head and an ignition wire, and they are connected to each other. The liquid injection pipe and the ignition wire are assembled together in the exhaust pipe. Both the liquid injection pipe and the exhaust pipe are round pipes made of high molecular polyethylene or nylon 12 materials. The exhaust pipe is seamlessly connected to the pipe cap of the fracturer and has waterproof sealing performance.

[0005] A further solution is that a group of the ignition wires includes two wires. One end of the ignition wire is connected to the electric ignition head, and the other end is connected to the wire of the blast hole of the fracturer to form a network.

[0006] A further solution is that the ignition wire has a low resistance value, is wrapped with an insulating material, and has good low-temperature resistance and toughness.

[0007] A further solution is that the outer diameter of the liquid injection pipe is 8 - 10 mm, and the inner diameter is 5 - 7 mm.

[0008] A further solution is that the outer diameter of the exhaust pipe is 18 - 22 mm, and the inner diameter is 13 - 17 mm.

[0009] A further solution is that it includes a fracturer, an exhaust pipe, a liquid injection pipe, an electric ignition head, an ignition wire, and manufacturing tools. The manufacturing tools include a pipe body welding machine, a plug-in welding machine for the pipe cap and the exhaust pipe, and a wire threading device;

[0010] The manufacturing process of the underwater liquid oxygen blasting pipeline assembly is as follows:

[0011] S01. Insert one end of the exhaust pipe into the pipe cap of the fracturer by hot melting. At the insertion part of the exhaust pipe and the pipe cap, the inside of the exhaust pipe should not be blocked, and the inner diameter should not be constricted.

[0012] S02. Complete the overall assembly of the fracturer through the processes of stringing the biomass fuel core, installing the electric ignition device, and sealing the pipe body.

[0013] S03. Then use a wire threading device to penetrate the exhaust pipe, and connect the liquid injection pipe and the ignition wire to the wire threading device.

[0014] S04. Then use the wire threading device to pull the liquid injection pipe and the ignition wire into the pipe body of the fracturer from the pipe orifice of the exhaust pipe. The liquid injection pipe and the ignition wire are assembled together in the exhaust pipe.

[0015] S05. During underwater liquid oxygen explosion reef operation, the underwater liquid oxygen blasting pipeline assembly including the exhaust pipe, the liquid injection pipe, and the ignition wire extends out of the water by a certain length and is fixed on the column of the pipeline floating operation platform.

[0016] S06. Then, pass the liquid injection pipe through the closer and dock it with the liquid injection main pipe.

[0017] S07. One set of ignition wires includes two wires. One end of the ignition wire is connected to the electric ignition head, and the other end is connected to the wire of the blast hole of the cracker to form a network, and the electric ignition network is completed.

[0018] S08. Complete the pipe threading and networking process of the pipeline assemblies of all crackers in sequence.

[0019] S09. The above completes the manufacturing and assembly process of the underwater liquid oxygen gas explosion pipeline assembly.

[0020] In a further solution, one end of the pipe orifice of the exhaust pipe is seamlessly inserted into the pipe cap of the cracker through hot melting.

[0021] In a further solution, the wire threading device is provided with a liquid injection pipe hole and a fuse hole, and the outer circle of the wire threading device is located in the exhaust hole.

[0022] In a further solution, after passing through the closer, the liquid injection pipe is docked with the liquid injection main pipe.

[0023] In a further solution, the leg wires of the electric ignition head are connected in parallel and then connected in series with the ignition wire. The connection point is wrapped with insulating tape and fixed to the biomass fuel core with tape.

[0024] The beneficial effects of the present invention are as follows: The underwater liquid oxygen gas explosion pipeline assembly of the present invention uses an exhaust pipe to centrally assemble the liquid injection pipe and the ignition wire, and is equipped with a related wire threading device. The exhaust pipe is seamlessly connected to the pipe cap of the cracker through hot melting welding, with good waterproof sealing performance. After being tested under multiple underwater liquid oxygen gas explosion scenario conditions, the gas explosion operation efficiency is high, the operability is extremely strong, the assembled cracker is safe and reliable, the pipelines are safely concentrated, the gas explosion effect is good, and the manufacturing and assembly process has the following advantages:

[0025] 1. The mechanism of the present invention is simple and has a high degree of integration. The greatest advantage is that the three pipelines of the liquid injection pipe, the exhaust pipe, and the ignition wire in the traditional liquid oxygen gas explosion are integrated together, and the liquid injection pipe and the ignition wire are placed in the exhaust pipe.

[0026] 2. The present invention is convenient for on-site flexible processing and assembly of various underwater liquid oxygen gas explosion pipeline assemblies according to the actual engineering situation. Moreover, the exhaust pipe is welded by hot melting, with firm welding, good waterproof airtightness, and good gas explosion effect.

[0027] 3. The present invention uses a hot-melt material as the main material for the exhaust pipe and liquid injection. It not only has good low-temperature performance and high strength, but also has heat insulation and insulation. On the premise of ensuring the safety of the liquid oxygen gas explosion operation, it reduces the loss of heat vaporization during the liquid oxygen operation process and improves the pipeline assembly and gas explosion efficiency of the underwater liquid oxygen gas explosion cracker. Description of the Drawings

[0028] Figure 1 Schematic diagram of the assembly process of the pipeline assembly according to an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the assembly structure of the pipeline assembly according to an embodiment of the present invention;

[0030] Figure 3 Schematic diagram of the disassembled structure of the pipeline assembly according to an embodiment of the present invention;

[0031] Figure 4 Schematic diagram of the structure of the wire threading device according to an embodiment of the present invention.

[0032] Reference numerals

[0033] 1. Exhaust pipe; 2. Liquid injection pipe; 3. Ignition wire; 4. Welding joint of the exhaust pipe and the pipe cap; 5. Body of the fracturing device; 6. Lower pipe cap; 7. Upper pipe cap; 8. Drilled hole in the upper pipe cap; 9. Wire threading device; 10. Liquid injection pipe hole; 11. Ignition wire hole. Detailed implementation manners

[0034] In order to more fully understand the technical content of the present invention, the technical solutions of the present invention will be further introduced and described below in conjunction with the accompanying drawings and specific embodiments, but not limited thereto.

[0035] As Figures 1 to 4 shown, in a specific embodiment of the present invention, the underwater liquid oxygen gas explosion pipeline assembly and its manufacturing process thereof include a fracturing device, an exhaust pipe, a liquid injection pipe, an electric ignition device and a biomass fuel core. The electric ignition device includes an electric ignition head and an ignition wire, and they are connected to each other. The liquid injection pipe and the ignition wire are centrally assembled in the exhaust pipe. Both the liquid injection pipe and the exhaust pipe are round pipes made of high molecular polyethylene or nylon 12 materials. The exhaust pipe is seamlessly connected to the pipe cap of the fracturing device and has waterproof sealing performance;

[0036] Further, a set of ignition wires includes two wires. One end of the ignition wire is connected to the electric ignition head, and the other end thereof is connected to the wire in the blast hole of the fracturing device to form a network.

[0037] Further, the ignition wire has a low resistance value, is wrapped with an insulating material, and has good low temperature resistance and toughness.

[0038] Further, the outer diameter of the liquid injection pipe is 8 - 10 mm, and the inner diameter is 5 - 7 mm.

[0039] Further, the outer diameter of the exhaust pipe is 18 - 22 mm, and the inner diameter is 13 - 17 mm.

[0040] Further, it includes a fracturer, an exhaust pipe, a liquid injection pipe, an electric igniter, an ignition wire, and manufacturing tools. The manufacturing tools include a pipe body welding machine, a plug-in welding machine for the pipe cap and the exhaust pipe, and a wire threading device.

[0041] The manufacturing process of the underwater liquid oxygen blasting pipeline assembly is as follows:

[0042] S01. Insert one end of the exhaust pipe into the pipe cap of the fracturer by hot melting. At the insertion part of the exhaust pipe and the pipe cap, the inside of the exhaust pipe should not be blocked, and the inner diameter should not be constricted.

[0043] S02. Complete the overall assembly of the fracturer through the processes of stringing the biomass fuel core, installing the electric ignition device, and sealing the pipe body.

[0044] S03. Then, pass a wire threading device through the exhaust pipe, and connect the liquid injection pipe and the ignition wire to the wire threading device.

[0045] S04. Then, use the wire threading device to pull the liquid injection pipe and the ignition wire into the pipe body of the fracturer from the pipe orifice of the exhaust pipe, and centrally assemble the liquid injection pipe and the ignition wire inside the exhaust pipe.

[0046] S05. During the underwater liquid oxygen explosion reef operation, the underwater liquid oxygen blasting pipeline assembly of the exhaust pipe together with the liquid injection pipe and the ignition wire extends out of the water by a certain length and is fixed on the column of the pipeline floating operation platform.

[0047] S06. Then, connect the liquid injection pipe to the liquid injection main pipe through a closer.

[0048] S07. One group of the ignition wires includes two wires. One end of the ignition wire is connected to the electric igniter, and the other end is connected to the wire of the blast hole of the fracturer to form a network, and complete the networking of the electric ignition network.

[0049] S08. Complete the pipe threading and networking process of the pipeline assembly of all fracturers in turn.

[0050] S09. The above completes the manufacturing and assembly process of the underwater liquid oxygen blasting pipeline assembly.

[0051] Further, one end of the pipe orifice of the exhaust pipe is seamlessly inserted into the pipe cap of the fracturer by hot melting.

[0052] Further, the wire threading device is provided with a liquid injection pipe hole and a fuse hole, and the outer circle of the wire threading device is located inside the exhaust hole.

[0053] Further, after passing through the closer, the liquid injection pipe is connected to the liquid injection main pipe.

[0054] Further, the leg wires of the electric igniter are connected in parallel and then connected in series with the ignition wire. The connection part is wrapped with insulating tape and fixed to the biomass fuel core with tape.

[0055] In the underwater liquid oxygen gas explosion pipeline assembly in the embodiments of the present invention, there is one liquid injection pipe, which is used to inject liquid oxygen into each cracker.

[0056] There is one exhaust pipe, which is a round pipe made of materials such as nylon 12 or high molecular weight polyethylene. During the liquid oxygen injection operation, it is used to discharge the original air and vaporized oxygen in each cracker into the atmosphere, keep the pressure value in the cracker within the safe range, and ensure the smooth completion of the liquid oxygen injection.

[0057] There is one set of ignition wires. Usually, there is one set (two strands) of wires in the underwater liquid oxygen gas explosion cracker. One end of the wire is connected to the electric ignition head, and the other end is connected to the wires of other blast holes to form a network.

[0058] After the above three groups of pipelines are led out from the blast hole cracker, they must be ensured to extend out of the water surface by a certain length. Among them, the liquid injection pipe must also be docked with the liquid injection main pipe through a closer.

[0059] 1. In response to the above problems and in combination with the actual situation of underwater liquid oxygen explosion reef, our company has studied and applied the underwater liquid oxygen gas explosion pipeline assembly process, and developed supporting pipelines and equipment.

[0060] 1. Pipelines suitable for underwater liquid oxygen gas explosion crackers

[0061] Liquid injection pipe: It is required to be low-temperature resistant, high-strength, good toughness, low price, and convenient for underwater gas explosion engineering operations. Aluminum pipes are not easy to use, and round pipes made of materials such as nylon 12 and high molecular weight polyethylene are preferred. The size of the liquid injection pipe is preferably 8 - 10 mm in outer diameter and 5 - 7 mm in inner diameter.

[0062] Exhaust pipe: It is required to be low-temperature resistant, high-strength, good toughness, low price, and convenient for underwater gas explosion engineering operations. Round pipes made of materials such as high molecular weight polyethylene and nylon 12 are preferred. The size of the exhaust pipe is preferably 18 - 22 mm in outer diameter and 13 - 17 mm in inner diameter.

[0063] Ignition wire: It is required that the wire has a low resistance value, and the outer package insulation material is a detonating wire with low-temperature resistance and good toughness.

[0064] 2. Pipeline assembly combination method

[0065] The pipeline assembly combination method adopts the combination of three pipelines into one, that is, increasing the inner diameter of the exhaust pipe and centrally arranging the liquid injection pipe and the ignition wire in the exhaust pipe. The advantages are as follows:

[0066] (1) Exhaust function. The basic function of the exhaust pipe remains unchanged;

[0067] (2) Protection function. The exhaust pipe can better protect the liquid injection pipe and the ignition wire, effectively avoiding damage to the liquid injection pipe and the electric ignition wire during the operation process, and improving the convenience and construction efficiency of underwater gas explosion operations;

[0068] (3) Heat insulation function. The liquid injection pipe is inside the exhaust pipe, avoiding direct contact between the liquid injection pipe and media such as water bodies, which can effectively reduce the vaporization loss of liquid oxygen caused by heat absorption during liquid oxygen filling and improve the liquid oxygen gas explosion efficiency.

[0069] During the pipe threading operation, first insert one end of the exhaust pipe into the cracker pipe cap through hot melting to complete the assembly of the cracker pipe body. Then pass a threader through the exhaust pipe, connect the liquid injection pipe and the ignition wire to the threader, and use the threader to pull the liquid injection pipe and the ignition wire into the cracker pipe body from the exhaust pipe opening. The overall assembly of the cracker is completed through processes such as stringing the biomass fuel core, installing the electric ignition device, and sealing the pipe body. During the underwater liquid oxygen gas explosion reef operation, the exhaust pipe (together with the liquid injection pipe and the electric ignition wire) needs to extend out of the water by a certain length and be fixed on the column of the pipeline floating operation platform. Then connect the liquid injection pipe to the liquid injection main pipe through the closer, and connect the ignition wire to complete the networking of the electric ignition network. In this way, all the pipe threading and networking processes of the cracker pipelines are completed.

[0070] The working principle of the underwater liquid oxygen gas explosion reef of the present invention is that underwater liquid oxygen gas explosion (or air energy expansion cracking) is a gas explosion operation. A specially made liquid oxygen gas explosion roll paper, or a biomass fuel core made of combustible material raw materials such as straw powder, wood powder, and carbon powder in a certain proportion, is loaded into the cracker. At the same time, the cracker is also equipped with a liquid injection pipe, an exhaust pipe, and an electric ignition device. Then, according to the design, drill holes on the target underwater reef body, push the assembled cracker into the blast hole to a certain position and block it. After power-on initiation, the combustible material near the ignition head in the blast hole cracker is quickly ignited by the heat source of the ignition head, and the combustion range rapidly expands. At the same time, the surrounding liquid oxygen quickly vaporizes when heated, and the volume expands rapidly. A large quasi-static pressure can be formed in the blast hole instantly, causing the rock to crack and move, completing the underwater blasting. Compared with traditional explosive blasting, the blasting vibration and the intensity of the underwater shock wave of this underwater liquid oxygen gas explosion are low, and the influence range is small.

[0071] The beneficial effects of the present invention are as follows: The underwater liquid oxygen gas explosion pipeline assembly of the present invention uses the exhaust pipe to centrally assemble the liquid injection pipe and the ignition wire, and is equipped with a related threader. The exhaust pipe is seamlessly welded to the pipe cap of the cracker through hot melting, with waterproof sealing performance. After being tested under multiple underwater liquid oxygen gas explosion scenarios, the gas explosion operation efficiency is high, the operability is extremely strong, the assembled cracker is safe and reliable, the pipelines are safely concentrated, the gas explosion effect is good, and the manufacturing and assembly process has the following advantages:

[0072] 1. The mechanism of the present invention is simple and has a high degree of integration. The biggest advantage is that the three pipelines of the liquid injection pipe, the exhaust pipe, and the ignition wire in the traditional liquid oxygen gas explosion are integrated, and the liquid injection pipe and the ignition wire are placed inside the exhaust pipe.

[0073] 2. The present invention facilitates the on-site flexible processing and assembly of various underwater liquid oxygen gas explosion pipeline assemblies according to the actual engineering situation. Moreover, the exhaust pipe is hot-melt welded, with firm welding, good waterproof airtightness, and good gas explosion effect.

[0074] 3. The present invention uses a hot-melt material as the main material for the exhaust pipe and liquid injection. It not only has good low-temperature performance and high strength, but also has heat insulation and insulation. On the premise of ensuring the safety of liquid oxygen gas explosion operations, it reduces the loss of heat vaporization during the liquid oxygen operation process and improves the pipeline assembly and gas explosion efficiency of the underwater liquid oxygen gas cracker.

[0075] Compared with traditional explosive blasting, the underwater liquid oxygen gas explosion pipeline assembly and manufacturing process of the present invention have low blasting vibration and underwater shock wave intensity, and a small influence range; there are few toxic and harmful products generated by the blasting, and the harm to aquatic organisms is small. It is a green, environmentally friendly, efficient and safe underwater reef blasting construction technology.

[0076] The above is only the preferred implementation mode of this patent, and it does not limit the scope of this patent. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings, directly or indirectly applied in other related technical fields, shall fall within the protection scope of this patent.

Claims

1. An underwater liquid oxygen explosion pipeline assembly, characterized in that: The invention comprises a fracturing device, an exhaust pipe, a liquid injection pipe, an electric ignition device and a biomass fuel core. The electric ignition device comprises an electric ignition head and an ignition wire, which are connected to each other. The liquid injection pipe and the ignition wire are centrally assembled in the exhaust pipe. One group of the ignition wires comprises two wires. One end of the ignition wire is connected to the electric ignition head, and the other end is connected to the wire of the blast hole of the fracturing device to form a network. The exhaust pipe is seamlessly connected to the pipe cap of the fracturing device and has waterproof sealing performance.

2. The underwater liquid oxygen explosion pipeline assembly according to claim 1, characterized in that: The injection pipe and the exhaust pipe are both round tubes made of high molecular weight polyethylene or nylon 12.

3. The underwater liquid oxygen explosion pipeline assembly according to claim 1, characterized in that: The ignition wire has a low resistance value, is covered with insulating material, and has good low temperature resistance and toughness.

4. The underwater liquid oxygen explosion pipeline assembly according to claim 1, characterized in that: The outer diameter of the injection tube is 8-10 mm, and the inner diameter is 5-7 mm.

5. The underwater liquid oxygen explosion pipeline assembly according to claim 1, characterized in that: The outer diameter of the exhaust pipe is 18-22 mm, and the inner diameter is 13-17 mm.

6. The manufacturing process of the underwater liquid oxygen explosion pipeline assembly according to claim 1 to claim 5, characterized in that: It includes a fracturing device, an exhaust pipe, a liquid injection pipe, an electric ignition head, an ignition wire and a manufacturing tool, wherein the manufacturing tool includes a pipe body welding machine, a plug-in welding machine for pipe cap and exhaust pipe and a threader; The manufacturing process of the underwater liquid oxygen explosion pipeline assembly, the specific method and steps are as follows: S01. Connect one end of the exhaust pipe to the pipe cap of the cracking device by hot melting. At the connection between the exhaust pipe and the pipe cap, the exhaust pipe should not be blocked and the inner diameter should not be necked. S02, completing the overall assembly of the fracturing device by stringing the biomass fuel core, installing the electric ignition device, and sealing the tube body; S03, then a threader is used to penetrate the exhaust pipe, and the injection pipe and the ignition wire are connected to the threader; S04, using a threader to pull the injection tube and the ignition wire from the pipe opening of the exhaust pipe into the tube body of the fracturing device, and centrally assembling the injection tube and the ignition wire in the exhaust pipe; S05. During underwater liquid oxygen blasting reef operation, the exhaust pipe together with the liquid injection pipe and the underwater liquid oxygen blasting pipeline assembly of the ignition wire extends out of the water surface for a certain length and is fixed on the column of the pipeline floating operation platform; S06, then the injection tube passes through the closing device and is connected to the injection main tube; S07, a group of ignition wires including two wires, one end of which is connected to the electric ignition head, and the other end of which is connected to the wire of the blast hole of the fracturing device to form a network, and the electric ignition network is completed; S08, completing the pipe threading and networking process of the pipeline assembly of all the fracturing devices in this way; S09. The above completes the manufacturing and assembly process of the underwater liquid oxygen explosion pipeline assembly.

7. The underwater liquid oxygen explosion pipeline assembly according to claim 6, characterized in that: One end of the pipe opening of the exhaust pipe is seamlessly plugged into the pipe cap of the fracturing device through hot melting.

8. The manufacturing process of the underwater liquid oxygen explosion pipeline assembly according to claim 6, characterized in that: The threader is provided with a liquid injection tube hole and a fuse hole, and the outer circle of the threader is located in the exhaust hole.

9. The underwater liquid oxygen explosion pipeline assembly according to claim 6, characterized in that: After passing through the closing device, the injection tube is butted against the injection mother tube.

10. The manufacturing process of the underwater liquid oxygen explosion pipeline assembly according to claim 6, characterized in that: The foot wires of the electric ignition head are connected in parallel and then in series with the ignition wire. The connection points are wrapped with insulating tape and fixed to the biomass fuel core with tape.

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