Mining-based working face manufacturing device for carbon dioxide fracturing pipe

Abstract

The mining-based working face manufacturing device for the carbon dioxide fracturing pipe comprises an air drill body, a handle is arranged at the end, away from a drill rod, of the air drill body, an auxiliary positioning device is arranged at the position, close to the drill rod, of the air drill body, and two fixing columns are symmetrically arranged on the outer side surface of the middle of the air drill body; a rotating sleeve is rotationally arranged on the outer side surface of the fixing column and fixedly connected with the movable end of a telescopic device, and a fixing device is arranged on the telescopic device. A working face for a carbon dioxide fracturing pipe is manufactured through an air drill body, a working face with the depth of 1.5 m is manufactured through a rotary coring method (the hole diameter is 65 mm), then hole distribution positions are marked around a center point through an auxiliary positioning device, then holes are continuously distributed through the air drill body, after fracturing holes are distributed, the carbon dioxide gas fracturing pipe is placed in the drilled holes, and the carbon dioxide gas fracturing pipe is manufactured. And plugging the hole by using a wooden wedge, connecting a detonating cord, and detonating by using a pulse type exploder after the personnel evacuate.

Description

Technical Field

[0001] The utility model relates to the technical field of mining, in particular to a working face manufacturing device for a carbon dioxide fracturing pipe based on mining. Background Art

[0002] Metal mines often use explosive blasting, which is prone to blasting injuries, roof collapse, blasting, and poisoning from toxic and hazardous gases. Carbon dioxide fracturing utilizes the instantaneous expansion of liquid carbon dioxide to generate tremendous pressure, which acts on the medium, creating and expanding fractures within the rock mass. Compared to explosives, carbon dioxide fracturing offers superior blasting effectiveness, minimal vibration, and enhanced safety. It can break larger rock fragments, reduces dust and blasting smoke by 50%, and produces no harmful gases, resulting in a high level of safety. Tests have shown that a CO2 fracturing unit consumption of 0.26 kg / m³ is equivalent to that of explosive blasting with a unit consumption of 0.15-0.2 kg / m³. A single Type 95 fracturing device possesses energy equivalent to 339 grams of TNT.

[0003] Carbon dioxide exists in a liquid state below 31°C and at pressures greater than 7.35 MPa. Above 31°C, it begins to vaporize, and its pressure fluctuates continuously with temperature. Leveraging this characteristic, liquid carbon dioxide is filled into the fracturing device's reservoir tube. A rapid heating device triggers the liquid carbon dioxide to instantly vaporize and expand, generating high pressure. When the pressure reaches the ultimate strength of the constant-pressure shear plate (a settable pressure), the plate breaks, releasing high-pressure gas from the release tube and acting on the coal (rock), thereby fracturing the coal (rock). Before using a carbon dioxide gas fracturing tube to fracture the coal (rock), a working face must be prepared in advance. After the fracturing holes are laid, the carbon dioxide gas fracturing tube is placed into the drilled hole, plugged with wooden wedges, and a detonating cord is connected. After personnel evacuate, the tube is detonated using a pulse detonator. Traditional pneumatic drills typically have limited functionality and are not suitable for rapid preparation of a working face for the carbon dioxide fracturing tube. Hole laying operations require a long time, resulting in low efficiency. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a working surface manufacturing device for carbon dioxide fracturing pipes based on mining, which can conveniently and quickly mark the hole layout positions around the center point, and at the same time use the telescopic device to quickly adjust the height of the air drill body to continue drilling the hole layout positions, which greatly improves the work efficiency and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a working face manufacturing device for a carbon dioxide fracturing pipe based on mining, comprising a pneumatic drill body, a handle being provided on the end of the pneumatic drill body away from the drill rod, an auxiliary positioning device being provided on the pneumatic drill body near the drill rod, and two fixed columns being symmetrically provided on the outer surface of the middle part of the pneumatic drill body, a rotating sleeve being rotatably provided on the outer surface of the fixed column, the rotating sleeve being fixedly connected to the movable end of the telescopic device, and a fixing device being provided on the telescopic device.

[0006] As a preferred technical solution of the present utility model, the auxiliary positioning device includes a rotating ring rotatably arranged on the air drill body, a cavity is opened inside the rotating ring, a tape measure is wound in the cavity, an opening connected to the cavity is opened on the outer surface of the rotating ring, the end of the tape measure passes through the opening and is connected to the fixed ring, and the fixed ring is used to fix the marker pen.

[0007] As a preferred technical solution of the present invention, an arc-shaped sliding groove is provided on the outer surface of the fixing ring near the opening, and a sliding block for squeezing and fixing the tape measure is slidably provided in the sliding groove.

[0008] As a preferred technical solution of the present invention, the outer surface of the sliding block is provided with anti-slip grooves.

[0009] As a preferred technical solution of the present invention, the fixing device includes a sliding ring slidably arranged on the outer surface of the fixed end of the telescopic device, and a plurality of anchor holes are evenly opened on the upper surface of the sliding ring.

[0010] As a preferred technical solution of the present invention, a screw hole staggered with the anchor rod hole is provided on the side surface of the sliding ring, and a fixing bolt is threadedly connected to the screw hole.

[0011] As a preferred technical solution of the present invention, an anti-slip pad is provided on the bottom surface of the fixed end of the telescopic device.

[0012] As a preferred technical solution of the present invention, a spirit level is installed on the air drill body.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: a working surface for a carbon dioxide fracturing tube is manufactured by a pneumatic drill body, a rotary coring method (aperture 65mm) is used to manufacture a 1.5m deep working surface, and then an auxiliary positioning device is used to mark the hole positions around the center point, and then the pneumatic drill body is used to continue drilling. After the fracturing holes are laid, the carbon dioxide gas fracturing tube is placed into the drilled hole, the hole is blocked with a wooden wedge, the detonating wire is connected, and after the personnel are evacuated, a pulse detonator is used for detonation. Compared with traditional pneumatic drill devices, the present application can conveniently and quickly mark the hole positions around the center point, and at the same time use the telescopic device to quickly adjust the height of the pneumatic drill body to continue drilling the hole positions, which greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 For this utility model Figure 1 A magnified view of the structure at point A;

[0016] Figure 3 It is a side structural schematic diagram of the utility model.

[0017] In the figure: 1 air drill body, 2 handle, 3 spirit level, 4 fixing column, 5 rotating sleeve, 6 telescopic device, 7 anti-slip pad, 8 sliding ring, 9 anchor hole, 10 fixing bolt, 11 rotating ring, 12 opening, 13 measuring tape, 14 fixing ring, 15 sliding block, 16 slide groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-3The utility model provides a technical solution: a working face manufacturing device for carbon dioxide fracturing pipe based on mining, comprising a pneumatic drill body 1, a handle 2 is provided on the end of the pneumatic drill body 1 away from the drill rod, and an operating switch or the like can be provided on the handle 2 to facilitate the operation of the pneumatic drill by the staff; an auxiliary positioning device is provided on the pneumatic drill body 1 near the drill rod, and the auxiliary positioning device comprises a rotating ring 11 rotatably arranged on the pneumatic drill body 1, a cavity is provided inside the rotating ring 11, a tape measure 13 is wound in the cavity, and a coil spring connected to the tape measure 13 is provided in the cavity for automatically resetting and retracting the tape measure 13; the outer surface of the rotating ring 11 is provided with a spring An opening 12 communicating with the cavity is provided, and the end of the tape measure 13 passes through the opening 12 and is connected to a fixing ring 14. The fixing ring 14 is used to fix a marking pen. The marking pen or other pen used for positioning is installed in the fixing ring 14, and the tape measure 13 is pulled to the corresponding position according to the diameter of the working surface of the carbon dioxide fracturing pipe. Then, the tape measure 13 is straightened through the fixing ring 14, and a mark can be made on the surface to be drilled with a marking pen. Since the rotating ring 11 can rotate, the position of each hole can be made to be the same distance from the hole position fixed by the drill rod of the air drill body 1 while ensuring that the tape measure 13 is straightened, so that positioning is faster and more accurate. A working surface for the carbon dioxide fracturing tube is manufactured using the pneumatic drill body 1. A rotary coring method (aperture 65 mm) is used to create a 1.5 m deep working surface. An auxiliary positioning device is then used to mark the hole positions around the center point. The pneumatic drill body 1 is then used to continue drilling holes. After the fracturing holes are laid, the carbon dioxide gas fracturing tube is placed into the drilled hole. The hole is plugged with a wooden wedge and the detonating cord is connected. After personnel have evacuated, a pulse detonator is used for detonation.

[0020] Two fixed columns 4 are symmetrically provided on the outer surface of the middle part of the air drill body 1, and a rotating sleeve 5 is rotatably provided on the outer surface of the fixed column 4. The rotating sleeve 5 is fixedly connected to the movable end of the telescopic device 6. The telescopic device 6 can adopt an electric push rod, a cylinder, or a hydraulic cylinder, etc., which is controlled by the operating switch on the handle 2 to drive the air drill body 1 to rise and fall, so that it is suitable for manufacturing work surfaces at different heights. At the same time, the angle of the air drill can be adjusted by cooperating with the rotating sleeve 5, which is suitable for drilling holes in planes with different inclinations.

[0021] The present application can conveniently and quickly mark the hole layout positions around the center point, and at the same time use the telescopic device 6 to quickly adjust the height of the air drill body 1 to continue drilling the hole layout positions, greatly improving work efficiency.

[0022] According to the preferred technical solution, an arc-shaped sliding groove 16 is provided on the outer surface of the fixed ring 14 near the opening 12, and a sliding block 15 for squeezing and fixing the tape measure 13 is slidingly provided in the sliding groove 16. When using a marker to mark the holes, the tape measure 13 can be fixed by moving the sliding block 15 to prevent it from being brought back by the winding spring when rotating with the rotating ring 11 and affecting the positioning accuracy; the outer surface of the sliding block 15 is provided with anti-slip grooves, which can increase friction and make it more convenient to move the sliding block 15.

[0023] According to the preferred technical solution, a fixing device is provided on the telescopic device 6, and the fixing device includes a sliding ring 8 slidably arranged on the outer surface of the fixed end of the telescopic device 6, and a plurality of anchor holes 9 are evenly opened on the upper surface of the sliding ring 8. The anchor holes 9 are used to pass through the anchors to fix the sliding ring 8 and the telescopic device 6 to the ground near the working surface. The sliding ring 8 can slide on the telescopic device 6 to adapt to different ground conditions; the side surface of the sliding ring 8 is provided with a screw hole staggered with the anchor hole 9, and the inner thread of the screw hole is connected with a fixing bolt 10. The sliding ring 8 can be fixed to the telescopic device 6 by the fixing bolt 10 to ensure the overall stability of the air drill body 1 when it is working.

[0024] As an optional technical solution, the bottom surface of the fixed end of the telescopic device 6 is provided with an anti-skid pad 7, which is preferably a wear-resistant rubber pad, which can improve its fixing stability, thereby further improving the overall stability of the air drill body 1 during operation.

[0025] An optional technical solution is that a spirit level 3 is installed on the air drill body 1. When operating the air drill body 1, the staff can control the level of the air drill through the spirit level 3 so that it is always perpendicular to the working surface.

[0026] The undisclosed parts of the present invention are all prior art, and their specific structures, materials and working principles will not be described in detail. Although the 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 variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A working face manufacturing device for carbon dioxide fracturing pipe based on mining, comprising a pneumatic drill body (1), characterized in that: A handle (2) is provided on the end of the air drill body (1) away from the drill rod, and an auxiliary positioning device is provided on the air drill body (1) near the drill rod. The auxiliary positioning device includes a rotating ring (11) rotatably provided on the air drill body (1), a cavity is provided inside the rotating ring (11), a tape measure (13) is wound in the cavity, an opening (12) is provided on the outer surface of the rotating ring (11) and is communicated with the cavity, an end of the tape measure (13) passes through the opening (12) and is connected to a fixed ring (14), and the fixed ring (14) is used to fix the marker pen; and two fixed columns (4) are symmetrically provided on the outer surface of the middle part of the air drill body (1), a rotating sleeve (5) is rotatably provided on the outer surface of the fixed column (4), the rotating sleeve (5) is fixedly connected to the movable end of the telescopic device (6), and the telescopic device (6) is provided with a fixing device.

2. The mining-based CO2 fracturing pipe working face manufacturing device according to claim 1, characterized in that: An arc-shaped sliding groove (16) is provided on the outer surface of the fixing ring (14) near the opening (12), and a sliding block (15) is slidably provided in the sliding groove (16) for squeezing and fixing the measuring tape (13).

3. The mining-based CO2 fracturing pipe working face manufacturing device according to claim 2, characterized in that: The outer surface of the sliding block (15) is provided with anti-slip grooves.

4. The mining-based CO2 fracturing pipe working face manufacturing device according to claim 1, characterized in that: The fixing device comprises a sliding ring (8) slidably arranged on the outer surface of the fixed end of the telescopic device (6), and a plurality of anchor rod holes (9) are evenly opened on the upper surface of the sliding ring (8).

5. The mining-based CO2 fracturing pipe working face manufacturing device according to claim 4, characterized in that: The side surface of the sliding ring (8) is provided with a screw hole staggered with the anchor rod hole (9), and a fixing bolt (10) is threadedly connected to the screw hole.

6. A mining-based CO2 fracturing pipe working face manufacturing device according to any one of claims 1 to 5, characterized in that: The bottom surface of the fixed end of the telescopic device (6) is provided with an anti-slip pad (7).

7. The mining-based CO2 fracturing pipe working face manufacturing device according to claim 1, characterized in that: A level (3) is installed on the air drill body (1).

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