A telescopic blowout preventer sealing device for gas extraction drilling

Abstract

The utility model relates to gas extraction equipment technical field especially relates to a telescopic blowout prevention hole sealing device for gas extraction drilling. The utility model provides a telescopic blowout prevention hole sealing device for gas extraction drilling which is high in stability, convenient to install and disassemble and improves construction efficiency. A telescopic blowout prevention hole sealing device for gas extraction drilling comprises an installation pipe, a sealing air bag and a guide plate, etc. The left outer side of the installation pipe is connected with the sealing air bag, and the left and right sides of the sealing air bag are both connected with the guide plate. The utility model pulls the first limiting frame and the second limiting frame, unlocks the rotary sleeve, reversely rotates the rotary sleeve, reversely rotates the rotary sleeve with the rotary frame driven by the rotary sleeve, drives the fixed part to slide inwards along the guide plate radially, makes the conical antiskid head of the fixed part separate from the inner wall of the drilling hole, and can complete the disassembly, so that the effect of high stability, convenient installation and disassembly and improved construction efficiency is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of gas extraction equipment, and in particular to a telescopic blowout prevention sealing device for gas extraction boreholes. Background Technology

[0002] In the process of gas drainage in coal mines, the sealing quality of the gas drainage borehole directly affects the gas drainage efficiency and construction safety. When the gas pressure inside the borehole is high, blowouts are prone to occur, which can not only lead to gas leakage but also cause safety accidents. Therefore, reliable blowout prevention sealing devices are required.

[0003] Existing gas extraction borehole sealing devices require the installation of sealing airbags outside the borehole using bolts and other fasteners to seal the drilling machine. The installation and disassembly of the sealing device is cumbersome, affecting construction efficiency and causing inconvenience.

[0004] Therefore, a telescopic blowout preventer sealing device for gas extraction boreholes has been developed that is highly stable, easy to install and disassemble, and improves construction efficiency. Utility Model Content

[0005] To overcome the shortcomings of existing gas extraction borehole sealing devices, such as cumbersome installation and disassembly processes that affect construction efficiency and are inconvenient, this utility model provides a telescopic blowout preventer sealing device for gas extraction boreholes that is highly stable, easy to install and disassemble, and improves construction efficiency.

[0006] A telescopic blowout preventer sealing device for gas extraction boreholes includes an installation pipe, a sealing airbag, a guide plate, a rotating sleeve, a rotating frame, fixing components, and a locking assembly. The sealing airbag is connected to the outer left side of the installation pipe, and the guide plate is connected to both the left and right sides of the sealing airbag. The rotating sleeve is rotatably connected to the installation pipe, and the rotating frame is connected to both the left and right sides of the rotating sleeve. Multiple fixing components are slidably connected to the guide plate, and the fixing components slide with the adjacent rotating frame. The rotating sleeve is provided with a locking assembly that can lock the device.

[0007] To further explain, all fasteners are equipped with tapered anti-slip heads.

[0008] To further explain, the locking assembly includes a mounting sleeve, a first limiting frame, and a first telescopic spring. The mounting sleeve is rotatably engaged with the right side of the rotating sleeve. Two first limiting frames are slidably connected to the mounting sleeve, and each first limiting frame is connected to the mounting sleeve by a first telescopic spring. Each first limiting frame is engaged with the rotating sleeve.

[0009] To further explain, the rotating sleeve has a limiting hole that mates with the first limiting frame.

[0010] To further explain, it also includes a sliding sleeve, a second limiting frame, and a second telescopic spring. The sliding sleeve is connected to the front right side of the mounting sleeve, and the second limiting frame is slidably connected inside the sliding sleeve. The second limiting frame is connected to the mounting sleeve, and the second telescopic spring is engaged with the rotating sleeve.

[0011] To further explain, the second restraint frame is equipped with a lever.

[0012] The beneficial effects of this utility model are as follows: by pulling the first and second limiting frames, the rotating sleeve is unlocked and rotated in the opposite direction. The rotating sleeve drives the rotating frame to rotate in the opposite direction, driving the fixing part to slide radially inward along the guide plate, so that the conical anti-slip head of the fixing part is disengaged from the inner wall of the drill hole, thus completing the disassembly. This achieves the effects of strong stability, easy installation and disassembly, and improved construction efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the mounting tube and fixing sleeve of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the sealing airbag and guide plate of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the rotating frame and the fixed frame of this utility model.

[0017] Figure 5 This is a three-dimensional structural diagram of the limiting frame and sliding sleeve of this utility model.

[0018] The markings in the attached diagram are: 1: mounting tube, 2: sealing airbag, 3: guide plate, 4: rotating sleeve, 5: rotating frame, 6: fixing component, 7: mounting sleeve, 8: first limiting frame, 9: first telescopic spring, 10: sliding sleeve, 11: second limiting frame, 12: second telescopic spring. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0020] A telescopic blowout preventer sealing device for gas extraction boreholes, such as Figures 1-5As shown, it includes an installation tube 1, a sealing airbag 2, a guide plate 3, a rotating sleeve 4, a rotating frame 5, a fixing component 6, and a locking assembly. The sealing airbag 2 is connected to the outer left side of the installation tube 1. The guide plate 3 is connected to both the left and right sides of the sealing airbag 2. The rotating sleeve 4 is rotatably connected to the installation tube 1. The rotating frame 5 is connected to both the left and right sides of the rotating sleeve 4. Eight fixing components 6 are slidably connected to the guide plate 3. Each fixing component 6 is provided with a conical anti-slip head. Each fixing component 6 slides with the adjacent rotating frame 5. The rotating sleeve 4 is provided with a locking assembly.

[0021] like Figure 2 , Figure 4 and Figure 5 As shown, the locking assembly includes a mounting sleeve 7, a first limiting frame 8, and a first telescopic spring 9. The mounting sleeve 7 is rotatably engaged with the right side of the rotating sleeve 4. Two first limiting frames 8 are slidably connected to the mounting sleeve 7. The first limiting frames 8 are connected to the mounting sleeve 7 by the first telescopic spring 9. The first limiting frames 8 are engaged with the rotating sleeve 4. The rotating sleeve 4 has limiting holes that cooperate with the first limiting frames 8.

[0022] like Figure 5 As shown, it also includes a sliding sleeve 10, a second limiting frame 11, and a second telescopic spring 12. The sliding sleeve 10 is connected to the front right side of the mounting sleeve 7. The second limiting frame 11 is slidably connected inside the sliding sleeve 10. The second limiting frame 11 is provided with a lever for easy to move. The second telescopic spring 12 is connected between the second limiting frame 11 and the mounting sleeve 7. The second telescopic spring 12 is engaged with the rotating sleeve 4.

[0023] When using this telescopic blowout preventer sealing device for gas extraction boreholes, first, place the entire device into the designated position inside the gas extraction borehole. Then, fix the device at the borehole opening using the mounting sleeve 7. Next, the operator pulls the first limiting frame 8 and the second limiting frame 11, causing the first limiting frame 8 to disengage from the limiting hole of the rotating sleeve 4 and the second limiting frame 11 to disengage from the limiting groove of the rotating sleeve 4, thus unlocking the rotating sleeve 4. Then, rotate the rotating sleeve 4, which drives the left and right rotating frames 5 to rotate. The rotating frames 5 drive the fixing member 6 to slide radially outward along the guide plate 3 until the conical anti-slip head of the fixing member 6 is in close contact with the inner wall of the borehole, achieving initial fixation of the device. Subsequently, release the first limiting frame 8 and the second limiting frame 11. Under the elastic force of the first telescopic spring 9 and the second telescopic spring 12, the first limiting frame 8 engages with the rotating sleeve 4. The first limiting frame 8 and the second limiting frame 11 are inserted into the limiting groove of the rotating sleeve 4 to fix the rotating sleeve 4, thereby fixing the position of the fixing member 6. Finally, air is injected into the sealing airbag 2 through the inflation port, causing the sealing airbag 2 to expand and fit tightly against the inner wall of the borehole, thus sealing the borehole and preventing gas leakage. When the device needs to be disassembled, the gas in the sealing airbag 2 is first released through the inflation port, causing the sealing airbag 2 to contract. Then, the first limiting frame 8 and the second limiting frame 11 are pulled to unlock the rotating sleeve 4. The rotating sleeve 4 is rotated in the opposite direction, which drives the rotating frame 5 to rotate in the opposite direction, driving the fixing member 6 to slide radially inward along the guide plate 3, so that the conical anti-slip head of the fixing member 6 is disengaged from the inner wall of the borehole. Finally, the entire device can be removed from the borehole, thus achieving strong stability, easy installation and disassembly, and improved construction efficiency.

[0024] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A telescopic blowout preventer sealing device for gas drainage boreholes, characterized in that: It includes an installation tube (1), a sealing airbag (2), a guide plate (3), a rotating sleeve (4), a rotating frame (5), a fixing component (6), and a locking component. The sealing airbag (2) is connected to the outer left side of the installation tube (1). The guide plate (3) is connected to both the left and right sides of the sealing airbag (2). The rotating sleeve (4) is rotatably connected to the installation tube (1). The rotating frame (5) is connected to both the left and right sides of the rotating sleeve (4). Multiple fixing components (6) are slidably connected to the guide plate (3). The fixing components (6) are slidably engaged with the adjacent rotating frame (5). The rotating sleeve (4) is equipped with a locking component that can lock.

2. The telescopic blowout preventer sealing device for gas extraction boreholes according to claim 1, characterized in that: All fasteners (6) are equipped with tapered anti-slip heads.

3. The telescopic blowout preventer sealing device for gas extraction boreholes according to claim 1, characterized in that: The locking assembly includes a mounting sleeve (7), a first limiting frame (8), and a first telescopic spring (9). The mounting sleeve (7) is rotatably engaged on the right side of the rotating sleeve (4). The mounting sleeve (7) is slidably connected to two first limiting frames (8). The first limiting frames (8) are connected to the mounting sleeve (7) by the first telescopic spring (9), and the first limiting frames (8) are engaged with the rotating sleeve (4).

4. A telescopic blowout preventer sealing device for gas extraction boreholes according to claim 3, characterized in that: The rotating sleeve (4) has a limiting hole that cooperates with the first limiting frame (8).

5. A telescopic blowout preventer sealing device for gas extraction boreholes according to claim 1, characterized in that: It also includes a sliding sleeve (10), a second limiting frame (11), and a second telescopic spring (12). The sliding sleeve (10) is connected to the front right side of the mounting sleeve (7). The second limiting frame (11) is slidably connected inside the sliding sleeve (10). The second telescopic spring (12) is connected between the second limiting frame (11) and the mounting sleeve (7). The second telescopic spring (12) is engaged with the rotating sleeve (4).

6. A telescopic blowout preventer sealing device for gas extraction boreholes according to claim 4, characterized in that: The second restraint frame (11) is equipped with a lever.

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