Integrated underwater liquid oxygen explosion glass fiber reinforced plastic cracking device assembling structure

Abstract

The utility model discloses an integrated underwater liquid oxygen explosion glass fiber reinforced plastic fracturing device assembly structure in the technical field of liquid oxygen explosion, which comprises a fracturing device body formed by detachably splicing a plurality of sections of shells and an integrated cover fixedly mounted at the top end of the fracturing device body, the center of the integrated cover is communicated with a tubular column, a liquid injection pipe is mounted in the tubular column in a penetrating manner, and the liquid injection pipe is connected with the integrated cover. A plurality of groups of biomass cores are installed on the section, extending into the fracturing device body, of the liquid injection pipe in a series connection mode, liquid injection holes are formed in the positions, close to the center of each group of biomass cores, of the liquid injection pipe, and electric ignition heads are tightly clamped between every two groups of biomass cores which abut against each other. The problems that in the prior art, the requirement for the assembly technology is high, the difficulty is large, water seepage, gas leakage and even joint disengagement of the fracturing device are easily caused by slight carelessness, underwater liquid oxygen explosion is greatly difficult, the underwater liquid oxygen explosion effect and the construction progress are seriously affected, and use by people is not facilitated are solved.

Description

Technical Field

[0001] This utility model relates to the field of liquid oxygen explosion technology, specifically to an integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure. Background Technology

[0002] Underwater blasting is an important component of engineering blasting. It is widely used in national economic construction and defense engineering, including port and dock construction, shipyard construction, waterway dredging, water conservancy and hydropower projects, road and bridge construction, and underwater pipeline laying. This utility model relates to the field of underwater liquid oxygen blasting reef technology. Liquid oxygen blasting (or air-energy expansion fracturing) involves loading a fracturing device with specially made liquid oxygen blasting paper, or a biomass fuel core made from combustible materials such as straw powder, wood powder, and carbon powder in a certain proportion. The fracturing device is also equipped with an injection pipe, an exhaust pipe, and an electric ignition device. A hole is then drilled into the target underwater reef according to the design, and the assembled fracturing device is pushed into the hole at a certain position and plugged. Upon ignition and detonation, the combustible material near the ignition head in the borehole fracturing device is rapidly ignited by the instantaneous heat from the ignition head, causing the combustion area to expand rapidly. Simultaneously, the surrounding liquid oxygen vaporizes rapidly upon heating, expanding dramatically in volume and instantly creating significant quasi-static pressure within the borehole, causing rock cracking and movement. Compared to traditional explosive blasting, underwater liquid oxygen blasting exhibits lower blasting vibration and underwater impact strength, resulting in a smaller impact range. It also produces fewer toxic and harmful byproducts, posing less threat to aquatic life, making it a truly green, environmentally friendly, efficient, and safe underwater reef blasting technology.

[0003] Existing fracturing device connection structures are relatively complex, requiring advanced assembly techniques and presenting significant challenges. Slight negligence can easily lead to water leakage, air leakage, or even detachment of the connections, causing considerable difficulties for underwater liquid oxygen blasting. This severely impacts the effectiveness and construction progress of underwater liquid oxygen blasting, hindering its use. Therefore, those skilled in the art have provided an integrated underwater liquid oxygen blasting fiberglass fracturing device assembly structure to address the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this invention is to provide an integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure, comprising a fracturing device body composed of multiple detachable shell sections and an integrated cover fixedly installed on the top of the fracturing device body. The integrated cover has a centrally connected tube column, and a liquid injection tube is installed through the tube column. Multiple sets of biomass cores are connected in series on the segments extending into the inside of the fracturing device body through the liquid injection tube. A liquid injection hole is opened near the center of each set of biomass cores in the liquid injection tube. An electric ignition head is tightly clamped between two sets of biomass cores that abut against each other. The multiple sets of electric ignition heads are connected in parallel through electric ignition wires.

[0006] Preferably, a flexible exhaust pipe is fitted onto the tubing column, and the flexible exhaust pipe is fixedly installed on the tubing column by a metal clamp fitted around its outer ring.

[0007] Preferably, two sets of first sealing rings are bonded to the tubing column, both sets of first sealing rings are located inside the fixed end of the flexible exhaust pipe, and the metal pipe clamp is installed between the two sets of first sealing rings.

[0008] Preferably, each segment of the fracturing device body has stainless steel threads bonded to its connecting end for mating, and the integrated cover is threadedly connected to the fracturing device body.

[0009] Preferably, each bottom housing has a second sealing ring bonded to it to abut the bottom of the upper housing, and the second sealing ring on the top housing abuts against the integrated cover.

[0010] Preferably, the entire body of the fracturing device is made of fiberglass.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the cylindrical shell of the underwater liquid oxygen explosion fracturing device, made primarily of fiberglass, utilizes internal and external steel threads as the intermediate connection points of the tubes and employs an integrated steel cap as the sealing top cover for the fracturing device tube. This is a mature and reliable structural form for underwater liquid oxygen explosion fracturing devices. The fiberglass fracturing device has a simple structure, is quick and easy to assemble, and has a good sealing effect at the device connections, making underwater liquid oxygen explosion more challenging and facilitating faster underwater liquid oxygen explosion construction and improving the underwater liquid oxygen explosion effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] In the diagram: 1. Fracturing device body; 2. Integrated cap; 3. Tube column; 4. Injection tube; 5. Biomass core; 6. Injection hole; 7. Electric ignition head; 8. Electric ignition wire; 9. Flexible exhaust pipe; 10. Metal pipe clamp; 11. First sealing ring; 12. Stainless steel thread; 13. Second sealing ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 In this embodiment of the present invention, the integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure includes a fracturing device body 1 composed of multiple detachable shell sections and an integrated cover 2 fixedly installed on the top of the fracturing device body 1. The center of the integrated cover 2 is connected to a tube column 3, and a liquid injection tube 4 is installed through the tube column 3. Multiple sets of biomass cores 5 are installed in series on the segments extending into the inside of the fracturing device body 1 through the liquid injection tube 4. A liquid injection hole 6 is opened near the center of each set of biomass cores 5. An electric ignition head 7 is tightly clamped between two sets of biomass cores 5 that abut against each other. Multiple sets of electric ignition heads 7 are connected in parallel through electric ignition wires 8.

[0017] A flexible exhaust pipe 9 is fitted onto the tubing column 3. The flexible exhaust pipe 9 is fixedly installed on the tubing column 3 by a metal clamp 10 fitted around its outer ring. Two sets of first sealing rings 11 are bonded to the tubing column 3. Both sets of first sealing rings 11 are located inside the fixed end of the flexible exhaust pipe 9. The metal clamp 10 is installed between the two sets of first sealing rings 11. Each section of the fracturing device body 1 has a stainless steel thread 12 bonded to its connecting end for mating. The integrated cover 2 is threadedly connected to the fracturing device body 1. Each bottom shell has a second sealing ring 13 bonded to its bottom end for abutting against the bottom end of the upper shell. The second sealing ring 13 on the top shell abuts against the integrated cover.

[0018] 1. Assembly preparation:

[0019] 1) Prepare the fracturing device tubing and connectors. Based on the gas explosion project design, prepare fiberglass shells of appropriate specifications and lengths, and prepare steel integrated covers.

[0020] 2) Prepare the tools and materials for assembly, including electric drill, pipe fastening wrench, hot air blower, wrench, screwdriver, pipe clamp, AB glue, waterproof sealant, and large and small sealing rings.

[0021] 3) Prepare a soft exhaust pipe 9, a liquid injection pipe 4, an electric ignition head 7, and an electric ignition wire 8. The lengths of the soft exhaust pipe 9, the liquid injection pipe 4, and the electric ignition wire 8 shall be determined according to the design. The number of electric ignition heads 7 is usually no less than two in each fracturing device.

[0022] 2. On-site assembly of the fracturing device:

[0023] 1) To make a biomass core, use an electric drill to drill a row of injection holes 6 (approximately 3-5 mm in diameter) at intervals of about 40-60 cm along the length of the injection tube 4 that is expected to be placed inside the fracturing device. Connect the combustible biomass core 5 (or rolled paper) in series with the injection tube 4 to form a string, with the length matching the length of the fracturing device.

[0024] 2) Install the electric ignition device. Place the electric ignition head 7 at the end and middle of the biomass core 5 string respectively. The electric ignition head 7 should be in close contact with the combustible core. The two ignition head leads are connected in parallel and then connected in series with the ignition wire. Wrap the connection with insulating tape and fix it to the core with tape.

[0025] 3) Assemble the integrated cover 2. First, place two first sealing rings 11 on the tube column 3 of the integrated cover 2. Apply AB glue to the tube column 3. At the same time, use a hot air blower to soften the end of the exhaust pipe. Forcefully insert the end of the exhaust pipe into the tube column 3 and quickly tighten the exhaust pipe to the tube column 3 with the metal pipe clamp 10.

[0026] 4) Pipe threading: Using a threader, thread the liquid injection tube 4 and ignition wire of the biomass string through the middle tube column 3 hole of the integrated metal cap from the inside out.

[0027] 5) Assemble the fracturing tube. If the length of one fracturing device is insufficient, it can be extended by connecting the inner and outer metal threads on the shell of each tube. First, install the second sealing ring 13 at the connection of the inner and outer threads of the tube body. After applying waterproof sealant to the threads, use a pipe fitting tightening wrench to tighten and seal the two tube bodies together.

[0028] 6) Loading the core: Slowly load the prepared biomass string into the fracturing tube. Do not force it in, as this may alter the shape and density of the biomass string and damage the electric ignition device.

[0029] 7) Secure the cap. First, install the sealing ring at the inner and outer threaded connection of the pipe body and the integrated cap 2. After applying waterproof sealant to the threaded area, use a pipe fitting tightening wrench to tighten the integrated cap 2 to the pipe body and seal it.

[0030] 8) Seal the pipe ends: Use waterproof tape to waterproof and seal the four ends of the exhaust pipe and injection pipe.

[0031] 9) After coiling the exhaust pipe, tie it with tape.

[0032] 10) Mark the number. After the overall liquid oxygen explosion fracturing device is completed, mark the number on the fracturing device tube body and the end of the exhaust pipe respectively.

[0033] 3. Precautions for assembling integrated fracturing devices:

[0034] 1) All connections must be secure and sealed, and must not be loose or detached, and must not leak water or air.

[0035] 2) The diameter and length of the fracturing device, the length of the exhaust pipe, the liquid injection pipe 4, and the length of the ignition wire shall be determined according to the design, but must meet the actual needs on site.

[0036] 3) After the ignition device is installed and the fracturing device assembly is completed, the electrical ignition circuit should be checked with a special instrument to ensure its integrity. Any problems found should be dealt with promptly.

[0037] 4) The fracturing unit assembly should be handled with care during transportation to avoid damage. The connection between the exhaust pipe and the tubing column 3 is easily damaged and should be protected.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure, characterized in that: The device includes a fracturing device body (1) that is detachably assembled from multiple shell sections and an integrated cover (2) fixedly installed on the top of the fracturing device body (1). The center of the integrated cover (2) is connected to a tube column (3). A liquid injection tube (4) is installed through the tube column (3). Multiple sets of biomass cores (5) are installed in series on the segments extending into the inside of the fracturing device body (1). A liquid injection hole (6) is opened near the center of each set of biomass cores (5) in the liquid injection tube (4). An electric ignition head (7) is tightly clamped between two sets of biomass cores (5). Multiple sets of electric ignition heads (7) are connected in parallel through an electric ignition wire (8).

2. The integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure according to claim 1, characterized in that: A flexible exhaust pipe (9) is fitted onto the column (3), and the flexible exhaust pipe (9) is fixedly installed on the column (3) by a metal clamp (10) fitted around its outer ring.

3. The integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure according to claim 2, characterized in that: Two sets of first sealing rings (11) are bonded to the pipe column (3). Both sets of first sealing rings (11) are located inside the fixed end of the flexible exhaust pipe (9). The metal pipe clamp (10) is installed between the two sets of first sealing rings (11).

4. The integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure according to claim 1, characterized in that: Each section of the fracturing device body (1) has stainless steel threads (12) bonded to its connecting end for mating, and the integrated cover (2) is threadedly connected to the fracturing device body (1).

5. The integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure according to claim 4, characterized in that: Each bottom housing is fitted with a second sealing ring (13) for abutting against the bottom of the upper housing, and the second sealing ring (13) on the top housing abuts against the integrated cover.

6. The integrated underwater liquid oxygen explosion fiberglass fracturing device assembly structure according to claim 1, characterized in that: The fracturing device body (1) is made entirely of fiberglass material.

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