Novel mining fracturing hole packer

Abstract

The utility model relates to the technical field of mining fracturing hole packers and discloses a novel mining fracturing hole packer which comprises a first expansion rubber pipe, a second expansion rubber pipe and a middle core, and the first expansion rubber pipe and the second expansion rubber pipe are fixedly connected through the middle core. A high-pressure water injection pipe is fixedly connected between the first expansion rubber pipe and the second expansion rubber pipe, a water outlet is fixedly formed in the upper surface of the high-pressure water injection pipe, and the first expansion rubber pipe, the second expansion rubber pipe, the middle core, the high-pressure water injection pipe, the water outlet, a high-pressure water injection opening, an installation sleeve, a protection frame, a connecting rod, a circular ring and a handle are arranged in a matched mode. And therefore, the effect of protecting the water outlet can be achieved, and the situations that the water outlet is blocked and damaged due to the fact that the water outlet is collided or blocked by soil in the placing process of the hole packer, the hole packer is damaged, and unnecessary economic losses are caused are avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of mine fracturing sealing devices, specifically a new type of mine fracturing sealing device. Background Technology

[0002] When extracting coal seam gas, some gas is difficult to extract due to varying permeability coefficients within the coal seam. Therefore, methods such as CO2 directional fracturing and hydraulic fracturing are used to enhance the permeability of the coal seam. The working process of hydraulic fracturing technology is as follows: First, a borehole is drilled. Then, a sealing device is used to seal the borehole exit, keeping the borehole sealed. Next, fracturing fluid is injected into the borehole. By continuously injecting fracturing fluid into the sealed borehole, the fracturing fluid enters the coal seam. Under the gravity of the fracturing fluid, the rock strata near the borehole are fractured, allowing the gas within the rock strata to enter the borehole through the fractured gaps. Finally, the gas is extracted through the borehole.

[0003] When fracturing borehole sealers are used, the first step is to place the sealer inside the borehole. However, traditional sealers do not protect the outlet when placing them, which can lead to the outlet being hit by objects or blocked by mud during placement, causing blockage and damage to the sealer, resulting in unnecessary economic losses. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel mine fracturing sealing device. This solves the problem mentioned in the background art where traditional sealing devices do not protect the water outlet during placement. This leads to the water outlet being subjected to collisions or blocked by mud during placement, causing blockage and damage to the sealing device, resulting in unnecessary economic losses.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel mine fracturing and sealing device, comprising a first expansion hose, a second expansion hose, and an intermediate core. The first expansion hose and the second expansion hose are fixedly connected through the intermediate core. A high-pressure water injection pipe is fixedly connected between the first expansion hose and the second expansion hose. An outlet is fixedly installed on the upper surface of the high-pressure water injection pipe. A high-pressure water injection port is fixedly installed on the left surface of the first expansion hose. An installation sleeve is fixedly installed on the outer surface of the second expansion hose. A protective frame is fitted on the outer surface of the first expansion hose. A connecting rod is fixedly installed on the left surface of the protective frame. A ring is fixedly installed on the left end of the connecting rod. A handle is fixedly installed on the left surface of the ring.

[0006] Preferably, a drill bit is provided at the right end of the second expansion tube, a first side plate is fixedly installed on the front and rear surfaces of the drill bit, a fixing block is fixedly installed on the left surface of the first side plate, a limit hole is provided on the surface of the fixing block, a second side plate is fixedly installed on the front and rear surfaces of the second expansion tube, a through hole is provided in the middle of the second side plate, a movable column is inserted and connected to the front surface of the second side plate, a limit block is installed at the end of the movable column, and a spring is fixedly installed on the front surface of the limit block.

[0007] Preferably, the interior of the high-pressure water injection pipe is interconnected with the interior of the first expansion hose and the second expansion mixer, and the interior of the high-pressure water injection port is interconnected with the interior of the first expansion hose.

[0008] Preferably, the outer surface of the mounting sleeve is provided with external threads, the inner wall of the protective frame is provided with internal threads, and the outer surface of the mounting sleeve is threadedly connected to the inner wall of the protective frame.

[0009] Preferably, the size of the movable column matches the size of the limiting hole, and the rear end of the spring is fixedly connected to the inner wall of the through hole.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. This new type of mine fracturing sealing device, through the coordinated arrangement of a first expansion hose, a second expansion hose, an intermediate core, a high-pressure water injection pipe, a water outlet, a high-pressure water injection port, an mounting sleeve, a protective frame, a connecting rod, a ring, and a handle, achieves the effect of protecting the water outlet. This prevents the sealing device from being damaged by collisions or being blocked by mud during placement, thus avoiding blockage and damage to the water outlet and causing unnecessary economic losses.

[0012] 2. This new type of mine fracturing and sealing device, through the coordinated arrangement of drill bit, first side plate, fixed block, limiting hole, second side plate, through hole, movable column, spring, and limiting block, achieves the effect of convenient replacement and disassembly of drill bit, thereby avoiding the situation where the drill bit is dulled and has difficulty entering the coal seam. Attached Figure Description

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

[0014] Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective frame of this utility model.

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the split-floor structure at the drill bit of this utility model.

[0017] In the diagram: 1. First expansion hose; 2. Second expansion hose; 3. Middle core; 4. High-pressure water injection pipe; 5. Water outlet; 6. High-pressure water injection port; 7. Mounting sleeve; 8. Protective frame; 9. Connecting rod; 10. Ring; 11. Handle; 12. Drill bit; 13. First side plate; 14. Fixing block; 15. Limiting hole; 16. Second side plate; 17. Through hole; 18. Movable column; 19. Spring; 20. Limiting block. Detailed Implementation

[0018] 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.

[0019] Example 1:

[0020] Please refer to Figure 1-4 A novel mining fracturing and sealing device includes a first expansion hose 1, a second expansion hose 2, and an intermediate core 3. The first expansion hose 1 and the second expansion hose 2 are fixedly connected by the intermediate core 3. A high-pressure water injection pipe 4 is fixedly connected between the first expansion hose 1 and the second expansion hose 2. A water outlet 5 is fixedly installed on the upper surface of the high-pressure water injection pipe 4. A high-pressure water injection port 6 is fixedly installed on the left surface of the first expansion hose 1. An installation sleeve 7 is fixedly installed on the outer surface of the second expansion hose 2. A protective frame 8 is fitted on the outer surface of the first expansion hose 1. A connecting rod 9 is fixedly installed on the left surface of the protective frame 8. A ring 10 is fixedly installed on the left end of the connecting rod 9. A handle 11 is fixedly installed on the left surface of the ring 10.

[0021] Specifically: In the process of using this utility model, the fracturing sealing device is first inserted into the working position of the coal seam hole. At this time, the worker manually holds the handle 11 and rotates it. The handle 11 drives the ring 10, the connecting rod 9, and the protective frame 8 to rotate until the protective frame 8 rotates out of the mounting sleeve 7. Then, the protective frame 8 is pulled out directly. Then, water is injected into the first expansion hose 1 and the second expansion hose 2 through the high-pressure water injection port 6. The difference in flow rate causes the first expansion hose 1 and the second expansion hose 2 to expand. Then, the high-pressure water is discharged through the water outlet 5, thereby achieving the effect of fracturing the coal seam. After use, the protective frame 8 is directly inserted back into the coal seam hole until the protective frame 8 reaches the position of the mounting sleeve 7. Then, the handle 11 is rotated again to rotate the protective frame 8 back into the mounting sleeve 7, thereby protecting the water outlet 5 again.

[0022] In this implementation scheme: the interior of the high-pressure water injection pipe 4 is interconnected with the interior of the first expansion hose 1 and the second expansion mixer, and the interior of the high-pressure water injection port 6 is interconnected with the interior of the first expansion hose 1.

[0023] In this implementation scheme: the outer surface of the mounting sleeve 7 is provided with external threads, the inner wall of the protective frame 8 is provided with internal threads, and the outer surface of the mounting sleeve 7 is threadedly connected to the inner wall of the protective frame 8.

[0024] Specifically: By connecting the protective frame 8 to the mounting sleeve 7, the outlet 5 is protected.

[0025] Working principle: This utility model protects the outlet 5 through the protective frame 8. When it needs to be disassembled, simply turn the handle 11 to rotate the protective frame 8, thereby unscrewing the protective frame 8 from the outer surface of the mounting sleeve 7. At this time, the outlet 5 is exposed and can be used for operation. After the operation is completed, the protective frame 8 can be screwed back in to protect the outlet 5 again. Compared with related technologies, the new type of mine fracturing sealing device provided by this utility model has the following beneficial effects: This design can protect the outlet 5, thereby avoiding the situation where the sealing device is damaged by collision or mud during placement, which could cause blockage of the outlet and damage to the sealing device, resulting in unnecessary economic losses.

[0026] Example 2:

[0027] Please refer to Figure 1-4The second expansion tube 2 has a drill bit 12 at its right end. A first side plate 13 is fixedly installed on the front and rear surfaces of the drill bit 12. A fixing block 14 is fixedly installed on the left surface of the first side plate 13. A limit hole 15 is provided on the surface of the fixing block 14. A second side plate 16 is fixedly installed on the front and rear surfaces of the second expansion tube 2. A through hole 17 is provided in the middle of the second side plate 16. A movable column 18 is inserted and connected to the front surface of the second side plate 16. A limit block 20 is installed at the end of the movable column 18. A spring 19 is fixedly installed on the front surface of the limit block 20.

[0028] Specifically: In this utility model, when the drill bit 12 needs to be replaced, the movable column 18 is manually pulled, and the movable column 18 moves outward, thereby driving the limiting block 20 to move outward until the limiting block 20 is completely inside the limiting hole 15. Then the drill bit 12 can be removed directly. After that, a new drill bit 12 is taken out and installed. The movable column 18 is pulled again on the same principle. At this time, the spring 19 is compressed and loaded until the fixing block 14 can be placed inside the through hole 17. Then, after the fixing block 14 is placed on the inner wall of the through hole 17, the movable column 18 is slowly released. Due to its own elasticity, the spring 19 drives the limiting block 20 to re-enter the limiting hole 15, thereby completing the installation.

[0029] In this embodiment: the size of the movable column 18 matches the size of the limiting hole 15, and the rear end of the spring 19 is fixedly connected to the inner wall of the through hole 17.

[0030] Working principle: This utility model achieves convenient replacement of drill bit 12 through the design of limiting block 20 and limiting hole 15. After pulling the movable column 18 to move the limiting block 20 away from the inside of the limiting hole 15, it can be disassembled. Compared with related technologies, the new type of mine fracturing hole sealing device provided by this utility model has the following beneficial effects: This design can achieve convenient replacement and disassembly of drill bit 12, thereby avoiding the situation where the drill bit 12 is dulled and has difficulty entering the coal seam hole.

[0031] The selection of various devices varies depending on the specific circumstances, and should be based on the actual needs and various parameters, taking into account the function and desired effect of the equipment.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel mine fracturing sealing device, comprising a first expansion hose (1), a second expansion hose (2), and an intermediate core (3), wherein the first expansion hose (1) and the second expansion hose (2) are fixedly connected by the intermediate core (3), characterized in that: A high-pressure water injection pipe (4) is fixedly connected between the first expansion hose (1) and the second expansion hose (2). A water outlet (5) is fixedly installed on the upper surface of the high-pressure water injection pipe (4). A high-pressure water injection port (6) is fixedly installed on the left surface of the first expansion hose (1). An installation sleeve (7) is fixedly installed on the outer surface of the second expansion hose (2). A protective frame (8) is fitted on the outer surface of the first expansion hose (1). A connecting rod (9) is fixedly installed on the left surface of the protective frame (8). A ring (10) is fixedly installed on the left end of the connecting rod (9). A handle (11) is fixedly installed on the left surface of the ring (10).

2. The novel mine fracturing sealing device according to claim 1, characterized in that: The second expansion tube (2) has a drill bit (12) at its right end. A first side plate (13) is fixedly installed on the front and rear surfaces of the drill bit (12). A fixing block (14) is fixedly installed on the left surface of the first side plate (13). A limit hole (15) is provided on the surface of the fixing block (14). A second side plate (16) is fixedly installed on the front and rear surfaces of the second expansion tube (2). A through hole (17) is provided in the middle of the second side plate (16). A movable column (18) is inserted and connected to the front surface of the second side plate (16). A limit block (20) is installed at the end of the movable column (18). A spring (19) is fixedly installed on the front surface of the limit block (20).

3. The novel mine fracturing sealing device according to claim 1, characterized in that: The interior of the high-pressure water injection pipe (4) is interconnected with the interior of the first expansion hose (1) and the second expansion mixer, and the interior of the high-pressure water injection port (6) is interconnected with the interior of the first expansion hose (1).

4. A novel mine fracturing sealing device according to claim 1, characterized in that: The outer surface of the mounting sleeve (7) is provided with external threads, and the inner wall of the protective frame (8) is provided with internal threads. The outer surface of the mounting sleeve (7) is threadedly connected to the inner wall of the protective frame (8).

5. A novel mine fracturing sealing device according to claim 2, characterized in that: The size of the movable column (18) matches the size of the limiting hole (15), and the rear end of the spring (19) is fixedly connected to the inner wall of the through hole (17).

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