Directional energy-releasing segmented carbon dioxide fracturing device

Abstract

The utility model discloses a directional energy releasing type segmented carbon dioxide fracturing device relates to carbon dioxide fracturing device technical field, the utility model discloses a pipe body, directional energy releasing component and buffer protection subassembly are connected to the fixed bottom of pipe body with the exhaust grid pipe, and the both sides between pipe body inner chamber are fixed with the energy releasing board of connecting. The utility model discloses a directional energy releasing component, utilizes the directional intercommunication structure of adjusting pipe and exhaust hood, and the meshing limit function of cooperation locking mechanism makes high pressure carbon dioxide gas by adjusting pipe's air inlet opening introduction, along exhaust hood's preset direction concentrated injection subsequently, forms controllable energy release path, and effectively solved the energy dispersion problem that traditional device energy releasing direction is incontrollable, and the meshing locking structure of positioning gear ring and fixed gear ring can accurate fixed to the rotation angle of adjusting pipe, and the pointer mark of combination turntable realizes the quick adjustment and stable positioning of exhaust hood orientation.

Description

Technical Field

[0001] This utility model belongs to the technical field of carbon dioxide fracturing devices, and in particular relates to a directional energy release type segmented carbon dioxide fracturing device. Background Technology

[0002] A carbon dioxide fracturing device is a device that uses the rapid vaporization and expansion of liquid carbon dioxide under heating conditions to generate high-pressure gas that fractures rock or media. It achieves instantaneous energy release through the phase change of liquid carbon dioxide in the storage pipe. It is widely used in mining, rock crushing and civil engineering and has the advantages of no sparks, low vibration and low environmental pollution. It is a safe and controllable non-explosive fracturing technology.

[0003] Existing carbon dioxide fracturing devices generally suffer from uncontrollable energy release direction during energy release. Due to the lack of an effective directional energy release structure, the high-temperature and high-pressure gas diffuses randomly during the release process, resulting in the energy not being concentrated in the predetermined direction. This not only reduces fracturing efficiency but also easily causes unnecessary damage to the surrounding rock mass, increases operational safety hazards, limits the device's adaptability to different geological conditions, and is not conducive to its use.

[0004] To address these issues, we provide a directional energy release type segmented carbon dioxide fracturing device. Utility Model Content

[0005] The purpose of this invention is to provide a directional energy-dissipating segmented carbon dioxide fracturing device. By combining the directional energy-dissipating component and the buffer protection component, it solves the problems of uncontrollable energy dissipation direction and energy dispersion in the existing carbon dioxide fracturing device, which leads to low fracturing efficiency and easy damage to surrounding structures due to disordered diffusion of high-pressure gas.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a directional energy-dissipating segmented carbon dioxide fracturing device, comprising two tubes, a directional energy-dissipating assembly, and a buffer protection assembly. An exhaust grille pipe is fixedly connected to the bottom of each tube. An energy-dissipating plate is fixedly connected between the two sides of the inner cavity of each tube. A heating ring is provided on the top of the energy-dissipating plate. The directional energy-dissipating assembly includes an adjusting pipe, the bottom of which extends through the inner cavity of the exhaust grille pipe and communicates with an exhaust hood. An air inlet is provided on the surface of the adjusting pipe at the bottom of the energy-dissipating plate. A locking mechanism is provided on the top of the adjusting pipe. The buffer protection assembly includes a buffer shell, the top of which is fixedly connected to the exhaust grille pipe. A piston plate is provided in the inner cavity of the buffer shell. A pressure plate is fixedly connected to the bottom of the piston plate, the bottom of which extends through to the outside of the buffer shell. A reset mechanism is fixedly connected to the top of the inner cavity of the buffer shell.

[0008] The present invention is further configured such that the locking mechanism includes a positioning toothed ring, the bottom of which is fixedly connected to the tube body, and a threaded sleeve and a fixing toothed ring are sequentially fitted on the surface of the adjusting tube from top to bottom. The positioning toothed ring can cooperate with the fixing toothed ring to limit the adjusting tube, so that it can control the exhaust hood to face the designated position. The threaded sleeve can control the fixing toothed ring to move up and down, so that it engages with the positioning toothed ring.

[0009] The present invention is further configured such that a rotating sleeve is fixedly connected to the surface of the threaded sleeve, a turntable is fixedly connected to the top of the adjusting tube, and a pointer is fixedly connected to the top of the turntable. The rotating sleeve allows the user to rotate the threaded sleeve, the turntable allows the user to control the orientation of the exhaust hood, and the pointer allows the user to know the current orientation of the exhaust hood.

[0010] The present invention is further configured such that a liquid injection tube is connected to the right side of the top of the tube body, and a one-way valve is installed on the surface of the liquid injection tube. The liquid injection tube and the one-way valve enable the user to inject liquid carbon dioxide into the tube body.

[0011] The present invention is further configured such that the surface of the adjusting tube is movably connected to the tube body via a bearing, and the top of the surface of the adjusting tube is provided with a thread. The bearing can increase the stability of the adjusting tube during rotation, and the thread can cooperate with the threaded sleeve to control the height of the fixed gear ring.

[0012] The present invention is further configured such that the reset mechanism includes two strong magnets, the opposite sides of which are fixedly connected to the inner wall of the buffer shell and the piston plate, respectively. The magnetic poles on the opposite sides of the two strong magnets are the same, and the two strong magnets can generate a repulsive force when they come close to each other, thereby absorbing part of the impact force by utilizing the repulsive property of the two strong magnets.

[0013] The present invention is further configured such that the bottom of the buffer shell is provided with a through hole for use with the pressure plate, and both sides of the buffer shell are connected to exhaust pipes. The through hole facilitates the pressure plate to control the piston plate to move, and the exhaust pipe can slowly discharge the air inside the buffer shell, thereby increasing its damping effect.

[0014] The present invention is further configured such that the top of the positioning toothed ring engages with the fixed toothed ring, and the surface of the rotating sleeve is provided with anti-slip ridges. The intermeshing positioning toothed ring and the fixed toothed ring can limit the adjustment tube and prevent it from rotating. The anti-slip ridges can increase the anti-slip effect of the rotating sleeve.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model utilizes a directional energy release component, employing a directional connection structure between the regulating pipe and the exhaust hood, along with the meshing and limiting function of the locking mechanism. This allows high-pressure carbon dioxide gas to be introduced through the air inlet of the regulating pipe and then concentrated and sprayed along the preset direction of the exhaust hood, forming a controllable energy release path. This effectively solves the energy dispersion problem caused by the uncontrollable energy release direction of traditional devices. The meshing and locking structure of the positioning gear ring and the fixed gear ring can precisely fix the rotation angle of the regulating pipe. Combined with the pointer marking on the turntable, it enables rapid adjustment and stable positioning of the exhaust hood's orientation, ensuring that the high-pressure gas is always released along the predetermined direction. By guiding the directional concentration of energy, it significantly improves the fracturing efficiency while reducing energy diffusion to non-target areas and lowering the risk of damage to the surrounding rock mass.

[0017] 2. This utility model uses a buffer protection component with an energy-absorbing structure of piston plate and pressure plate inside the buffer shell. When the device is lowered into the hole, the pressure plate triggers the piston plate to compress the air inside the buffer shell, forming a damping buffer. The repulsive action of the like poles of two strong magnets in the reset mechanism forms a non-contact elastic reset force. Combined with the slow-release exhaust characteristics of the exhaust pipe, it can absorb the impact energy of falling, avoid the deformation of the pipe structure or the failure of the seal caused by hard impact, solve the problem of damage to internal components caused by impact vibration in traditional fracturing devices, and significantly improve the operational safety of the fracturing device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 A perspective view of a directional energy-dissipating segmented carbon dioxide fracturing device;

[0020] Figure 2 This is a cross-sectional view of the tube body in a directional energy-dissipating segmented carbon dioxide fracturing device;

[0021] Figure 3 This is a schematic diagram of the regulating pipe in a directional energy-dissipating segmented carbon dioxide fracturing device;

[0022] Figure 4 Exploded view of the locking mechanism in a directional energy-dissipating segmented carbon dioxide fracturing device;

[0023] Figure 5 This is a cross-sectional view of the buffer shell in a directional energy-dissipating segmented carbon dioxide fracturing device.

[0024] In the attached diagram: 1. Pipe body; 2. Exhaust grille pipe; 3. Energy dissipation plate; 4. Heating ring; 5. Directional energy dissipation assembly; 51. Adjusting pipe; 52. Exhaust hood; 53. Air intake opening; 54. Locking mechanism; 6. Buffer protection assembly; 61. Buffer shell; 62. Piston plate; 63. Pressure plate; 64. Reset mechanism; 541. Positioning gear ring; 542. Threaded sleeve; 543. Fixed gear ring; 544. Rotating sleeve; 545. Turntable; 641. Strong magnet; 642. Exhaust pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figure 1-5 This utility model is a directional energy-dissipating segmented carbon dioxide fracturing device, comprising two tubes 1, a directional energy-dissipating component 5, and a buffer protection component 6. An exhaust grille pipe 2 is fixedly connected to the bottom of the tube 1. An energy-dissipating plate 3 is fixedly connected between the two sides of the inner cavity of the tube 1. A heating ring 4 is provided on the top of the energy-dissipating plate 3. The directional energy-dissipating component 5 includes an adjusting pipe 51. The bottom of the adjusting pipe 51 extends through the inner cavity of the exhaust grille pipe 2 and communicates with an exhaust hood 52. An air inlet 53 is opened on the surface of the adjusting pipe 51 and at the bottom of the energy-dissipating plate 3. A locking mechanism 54 is provided on the top of the adjusting pipe 51. The buffer protection component 6 includes a buffer shell 61. The top of the buffer shell 61 is fixedly connected to the exhaust grille pipe 2. A piston plate 62 is provided in the inner cavity of the buffer shell 61. A pressure plate 63 is fixedly connected to the bottom of the piston plate 62. The bottom of the pressure plate 63 extends through to the outside of the buffer shell 61. A reset mechanism 64 is fixedly connected to the top of the inner cavity of the buffer shell 61.

[0028] Specifically: the exhaust grille pipe 2 is installed at the bottom of the pipe body 1. The bottom pipe body 1 is connected to the exhaust grille pipe 2 at the bottom of the top pipe body 1, forming a double-layer structure. During the fracturing operation, carbon dioxide can be discharged from the two pipe bodies 1 separately, realizing segmented fracturing operation. The heating ring 4 is used to heat the carbon dioxide, making it quickly turn into a gaseous state. The exhaust hood 52 can discharge carbon dioxide gas into the fracturing hole, causing the rock layer to crack. The air inlet 53 facilitates the entry of carbon dioxide gas into the regulating pipe 51, enabling it to spray the gas in a specific direction. The locking mechanism 54 is used to lock the orientation of the regulating pipe 51 and the exhaust hood 52, so that it can stably release energy in the specified direction. The pressure plate 63 can absorb the impact force after the pipe body 1 falls into the hole. After the pressure plate 63 is pressed, it controls the piston plate 62 to move upward, using the piston plate 62 to compress the air inside the buffer shell 61. At the same time, the reset mechanism 64 absorbs part of the impact force, preventing the impact force generated by the fall from affecting the pipe body 1.

[0029] Example 2

[0030] Please see Figure 1-5 Based on Embodiment 1, the locking mechanism 54 includes a positioning gear ring 541, the bottom of which is fixedly connected to the tube body 1. From top to bottom, the surface of the adjusting tube 51 is sequentially fitted with a threaded sleeve 542 and a fixing gear ring 543. A rotating sleeve 544 is fixedly connected to the surface of the threaded sleeve 542. A turntable 545 is fixedly connected to the top of the adjusting tube 51, and a pointer is fixedly connected to the top of the turntable 545. An injection tube is connected to the right side of the top of the tube body 1, and a one-way valve is installed on the surface of the injection tube. The surface of the adjusting tube 51 is connected to the tube body... 1. The adjusting tube 51 is connected by a bearing. The top of the surface of the adjusting tube 51 is provided with a thread. The reset mechanism 64 includes two strong magnets 641. The opposite sides of the two strong magnets 641 are fixedly connected to the inner wall of the buffer shell 61 and the piston plate 62, respectively. The magnetic poles of the opposite sides of the two strong magnets 641 are the same. The bottom of the buffer shell 61 is provided with a through hole that cooperates with the pressure plate 63. Both sides of the buffer shell 61 are connected to exhaust pipes 642. The top of the positioning gear ring 541 meshes with the fixed gear ring 543. The surface of the rotating sleeve 544 is provided with anti-slip ridges.

[0031] Specifically: the positioning gear ring 541 can cooperate with the fixed gear ring 543 to limit the adjustment tube 51, allowing it to control the orientation of the exhaust hood 52 to a designated position; the threaded sleeve 542 can control the up-and-down movement of the fixed gear ring 543, making it mesh with the positioning gear ring 541; the rotating sleeve 544 allows the user to rotate the threaded sleeve 542; the turntable 545 allows the user to easily control the orientation of the exhaust hood 52; the pointer allows the user to easily know the current orientation of the exhaust hood 52; the injection tube and one-way valve allow the user to easily inject liquid carbon dioxide into the tube body 1; and the bearing increases the rotation of the adjustment tube 51. The stability during the process is ensured by the threaded sleeve 542 cooperating with the fixed gear ring 543 to control the height of the fixed gear ring 543. The two strong magnets 641 can generate a repulsive force when they come close to each other, and the repulsive property of the two strong magnets 641 can absorb part of the impact force. The through hole facilitates the pressure plate 63 to control the movement of the piston plate 62. The exhaust pipe 642 can slowly discharge the air inside the buffer shell 61, increasing its damping effect. The meshing positioning gear ring 541 and the fixed gear ring 543 can limit the adjustment pipe 51 to prevent it from rotating. The anti-slip ridge can increase the anti-slip effect of the rotating sleeve 544.

[0032] The working principle of this utility model is as follows: During operation, liquid carbon dioxide is first injected into the tube body 1 through the injection tube. Then, the tube body 1 is lowered into the fracture hole. At this time, the pressure plate 63 of the buffer protection component 6 contacts the bottom of the hole. After being pressed, it drives the piston plate 62 to move upward in the inner cavity of the buffer shell 61, compressing the air inside the buffer shell 61 and slowly discharging it through the exhaust pipe 642, forming a damping buffer. At the same time, the two strong magnets 641 of the reset mechanism 64 generate a repulsive force to absorb the impact energy, providing buffer protection for the tube body 1 and preventing it from being damaged by the impact force after falling into the hole. After the tube body 1 is placed, the turntable 545 is rotated. The turntable 545 drives the adjusting pipe 51 to rotate and adjusts the orientation of the exhaust cover 52 to the desired position. The direction of the rock strata is marked, and then the rotating sleeve 544 is screwed down to drive the threaded sleeve 542 to move down and control the fixed toothed ring 543 to engage with the positioning toothed ring 541 on the pipe body 1, locking the angle of the regulating pipe 51. First, the heating ring 4 in the bottom pipe body 1 is activated, and then the heating ring 4 in the top pipe body 1 is activated to realize the segmented fracturing operation. The heating ring 4 heats the liquid carbon dioxide to make it vaporize and expand. After the high-pressure gas pushes open the energy release plate 3, it enters the regulating pipe 51 through the air inlet 53 and is directionally sprayed out along the exhaust hood 52 to impact the rock strata, ensuring that the high-pressure gas is always released in the predetermined direction. By guiding the energy to concentrate in a specific direction, the fracturing efficiency is significantly improved, while reducing the energy diffusion to non-target areas and reducing the risk of damage to the surrounding rock mass.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A directional energy-dissipating segmented carbon dioxide fracturing device, comprising two tubes (1), a directional energy-dissipating assembly (5), and a buffer protection assembly (6), characterized in that: An exhaust grille pipe (2) is fixedly connected to the bottom of the pipe body (1), and an energy venting plate (3) is fixedly connected between the two sides of the inner cavity of the pipe body (1). A heating ring (4) is provided on the top of the energy venting plate (3). The directional energy release assembly (5) includes an adjustment pipe (51), the bottom of which extends through the inner cavity of the exhaust grille pipe (2) and is connected to an exhaust hood (52). An air inlet (53) is provided on the surface of the adjustment pipe (51) and at the bottom of the energy release plate (3). A locking mechanism (54) is provided on the top of the adjustment pipe (51). The buffer protection assembly (6) includes a buffer shell (61), the top of which is fixedly connected to the exhaust grille pipe (2), a piston plate (62) is provided in the inner cavity of the buffer shell (61), a pressure plate (63) is fixedly connected to the bottom of the piston plate (62), the bottom of the pressure plate (63) extends through to the outside of the buffer shell (61), and a reset mechanism (64) is fixedly connected to the top of the inner cavity of the buffer shell (61).

2. The directional energy-dissipating segmented carbon dioxide fracturing device according to claim 1, characterized in that: The locking mechanism (54) includes a positioning toothed ring (541), the bottom of which is fixedly connected to the tube body (1), and the surface of the adjusting tube (51) is fitted with a threaded sleeve (542) and a fixing toothed ring (543) from top to bottom.

3. The directional energy-dissipating segmented carbon dioxide fracturing device according to claim 2, characterized in that: A rotating sleeve (544) is fixedly connected to the surface of the threaded sleeve (542), a turntable (545) is fixedly connected to the top of the adjusting tube (51), and a pointer is fixedly connected to the top of the turntable (545).

4. The directional energy-dissipating segmented carbon dioxide fracturing device according to claim 1, characterized in that: The top right side of the tube body (1) is connected to an injection pipe, and a one-way valve is installed on the surface of the injection pipe.

5. A directional energy-dissipating segmented carbon dioxide fracturing device according to claim 1, characterized in that: The surface of the regulating tube (51) is movably connected to the tube body (1) via a bearing, and the top of the surface of the regulating tube (51) is provided with a thread.

6. A directional energy-dissipating segmented carbon dioxide fracturing device according to claim 1, characterized in that: The reset mechanism (64) includes two strong magnets (641), with opposite sides of the two strong magnets (641) fixedly connected to the inner wall of the buffer shell (61) and the piston plate (62) respectively, and the magnetic poles of the opposite sides of the two strong magnets (641) are the same.

7. A directional energy-dissipating segmented carbon dioxide fracturing device according to claim 1, characterized in that: The bottom of the buffer shell (61) is provided with a through hole that works in conjunction with the pressure plate (63), and both sides of the buffer shell (61) are connected to an exhaust pipe (642).

8. A directional energy-dissipating segmented carbon dioxide fracturing device according to claim 3, characterized in that: The top of the positioning toothed ring (541) engages with the fixed toothed ring (543), and the surface of the rotating sleeve (544) is provided with anti-slip ridges.

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