Self-expanding hole packer for gas drainage

Abstract

The utility model discloses a self-expanding hole packer for gas drainage, which belongs to the technical field of hole packers and comprises an extraction pipe, a protective sleeve is arranged on the surface of one end of the extraction pipe, a tearing lead is connected to the surface of the protective sleeve, and a first connecting component is slidably connected to the surface of the other end of the extraction pipe. A fixing ring is arranged on the surface of the second clamping piece, the surface of a second fixing block on the surface of the second clamping piece is in threaded connection with a fixing transverse plate, and a screw penetrates through a first fixing block and a fixing hole in the fixing transverse plate. The second clamping piece and the first connecting assembly can be further fixed, so that the structure is more stable; the shielding assembly is arranged, the surface of the extraction pipe is connected with the shielding plate, the shielding plate is matched with the sealing gasket and the sealing ring, one end of the sponge can be shielded, the sponge is prevented from being polluted, the sealing effect is further achieved, water can be conveniently added through the water inlet pipe, and the sponge is kept expanding.

Description

Technical Field

[0001] This utility model belongs to the field of sealing device technology, specifically relating to a self-expanding gas extraction sealing device. Background Technology

[0002] A borehole sealer is a sealing device for the borehole opening of coalbed methane extraction and coalbed water injection boreholes. It mainly includes gas extraction borehole sealers and coalbed water injection borehole sealers. Gas extraction borehole sealers are used during coal mining to inject water into the coal seam and extract methane gas to prevent gas leakage.

[0003] Chinese patent application number 202121524180.5 discloses a self-expanding gas extraction sealing device, including an extraction pipe. A sponge is placed on the outer surface of the extraction pipe, and a protective sleeve is placed on the outer surface of the sponge. A tear-lead wire is placed on the protective sleeve. A connecting component is slidably disposed on the outer surface of the extraction pipe, located on one side of the protective sleeve. A stop is disposed between the protective sleeve and the connecting component, and the stop is fixedly sleeved on the outer surface of the extraction pipe. A snap-fit ​​component is disposed on one side of the extraction pipe, engaging with the connecting component. The connecting component includes a slider and a snap-fit ​​component. The slider is slidably mounted on the outer surface of the extraction pipe, and the snap-fit ​​component is located on one side of the slider. This invention solves the problems of requiring grouting for sealing, high labor intensity for workers, and the consumption of large amounts of grout.

[0004] In the aforementioned patent, 1. after the connecting component one and the snap-fit ​​component two are rotated and snapped together, the surface lacks further fixing structure, and the connection is not stable enough; 2. after the sponge inside the protective sleeve is sealed, one side is exposed and needs to be covered and protected. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a self-expanding gas extraction sealing device, which features good connection performance and convenient shielding.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-expanding gas extraction sealing device, comprising an extraction pipe, a protective sleeve provided on one end surface of the extraction pipe, a tear lead wire connected to the surface of the protective sleeve, a connecting component 1 slidably connected to the surface of the other end surface of the extraction pipe, a snap-fit ​​component 2 provided on one side of the connecting component 1 and on the surface of the extraction pipe, a fixing component provided between the snap-fit ​​component 2 and the connecting component 1, and a shielding component installed on the surface of the extraction pipe and on one side of the protective sleeve.

[0007] Preferably, the fixing component includes a fixing ring, a fixing cross plate, a first fixing block, a second fixing block, and fixing holes. The second fixing component has a fixing ring on its surface, a second fixing block fixed on its surface, a fixing cross plate on its surface, a first fixing block fixed on its surface, and fixing holes correspondingly opened inside the fixing cross plate and the first fixing block.

[0008] Preferably, the fixing component further includes a threaded hole and a threaded connecting post, wherein the bottom of the fixing cross plate is connected to the threaded connecting post, and the second fixing block has a threaded hole at a position corresponding to the threaded connecting post.

[0009] Preferably, the side surface of the fixing ring is provided with an anti-collision structure, which includes an anti-collision pad and an adhesive layer, wherein the side surface of the fixing ring near the connecting component is connected to the anti-collision pad through the adhesive layer.

[0010] Preferably, the shielding assembly includes a sealing gasket, a shielding plate, fastening holes, and a sealing ring. The shielding plate is slidably connected to the surface of the extraction tube and located on one side of the protective sleeve. The surface of the shielding plate is provided with a sealing gasket. The interior of the shielding plate is provided with a sealing ring at a position corresponding to the extraction tube. Four sets of fastening holes are opened inside the shielding plate.

[0011] Preferably, the shielding assembly further includes a water inlet pipe and a sealing plug, wherein the water inlet pipe is connected through the inside of the shielding plate, and a sealing plug is provided at one end of the water inlet pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model is equipped with a fixing component, which provides a fixing ring on the surface of the second snap-fit ​​part, and a fixing plate is threadedly connected to the surface of the second fixing block on the surface of the snap-fit ​​part. The screw passes through the fixing hole in the first fixing block and the fixing plate, which can further fix the second snap-fit ​​part to the first connecting component, making its structure more stable.

[0014] 2. This utility model is equipped with a shielding component, which connects a shielding plate to the surface of the extraction pipe. Together with a sealing gasket and a sealing ring, it can shield one end of the sponge, prevent the sponge from being contaminated, and further achieve a sealing effect. In addition, the water inlet pipe can easily add water to keep the sponge expanded. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a perspective view of the fixing component of this utility model;

[0017] Figure 3 This is a perspective view of the shielding component of this utility model;

[0018] In the diagram: 1. Extraction pipe; 2. Protective sleeve; 3. Shielding assembly; 31. Sealing gasket; 32. Shielding plate; 33. Fastening hole; 34. Water inlet pipe; 35. Sealing ring; 36. Sealing plug; 4. Fixing assembly; 41. Fixing ring; 42. Fixing cross plate; 43. First fixing block; 44. Anti-collision structure; 441. Anti-collision soft pad; 442. Adhesive layer; 45. Threaded hole; 46. Threaded connecting post; 47. Second fixing block; 48. Fixing hole; 5. Clip-on part two; 6. Connecting assembly one; 7. Tear lead wire. Detailed Implementation

[0019] 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.

[0020] Example 1

[0021] Please see Figure 1-3 The present invention provides the following technical solution: a self-expanding gas extraction sealing device, including an extraction pipe 1, a protective sleeve 2 provided on one end surface of the extraction pipe 1, a tear lead 7 connected to the surface of the protective sleeve 2, a connecting component 6 slidably connected to the other end surface of the extraction pipe 1, a snap-fit ​​component 5 provided on one side of the connecting component 6 and on the surface of the extraction pipe 1, a fixing component 4 provided between the snap-fit ​​component 5 and the connecting component 6, and a shielding component 3 installed on the surface of the extraction pipe 1 and on one side of the protective sleeve 2.

[0022] Specifically, the fixing component 4 includes a fixing ring 41, a fixing cross plate 42, a first fixing block 43, a second fixing block 47, and fixing holes 48. The second snap-fit ​​component 5 has a fixing ring 41 on its surface, a second fixing block 47 fixed to its surface, a fixing cross plate 42 on its surface, and a first fixing block 43 fixed to its surface. Fixing holes 48 are correspondingly provided inside the fixing cross plate 42 and the first fixing block 43.

[0023] By adopting the above technical solution, after the second snap-fit ​​component 5 is connected to the first connecting component 6, the upper end of the second fixing block 47 of the fixing ring 41 is fitted with a fixing horizontal plate 42. The fixing hole 48 in the fixing horizontal plate 42 corresponds to the fixing hole 48 in the first fixing block 43. The connection is made by screws, which can further connect the second snap-fit ​​component 5 and the first connecting component 6, resulting in better stability.

[0024] Specifically, the fixing component 4 also includes a threaded hole 45 and a threaded connecting post 46. The bottom of the fixing cross plate 42 is connected to the threaded connecting post 46, and the second fixing block 47 has a threaded hole 45 at a position corresponding to the threaded connecting post 46.

[0025] By adopting the above technical solution, the threaded connecting post 46 engages with the threaded hole 45, which allows the fixing plate 42 to be easily installed on the upper end of the second fixing block 47 of the fixing ring 41.

[0026] Specifically, a collision-resistant structure 44 is provided on the side surface of the fixing ring 41. The collision-resistant structure 44 includes a collision-resistant pad 441 and an adhesive layer 442. The collision-resistant pad 441 is connected to the side surface of the fixing ring 41 near the connecting assembly 6 through the adhesive layer 442.

[0027] By adopting the above technical solution, the anti-collision soft pad 441 is fixed to the side surface of the fixing ring 41 through the adhesive layer 442, which can provide good buffer protection for the fixing ring 41 and the connecting component 6.

[0028] In this embodiment, the extraction pipe 1 is inserted into the gas extraction borehole. Pulling the tear lead 7 causes the sponge inside the protective sleeve 2 to automatically expand and seal the gap between the extraction pipe 1 and the borehole, completing the sealing. The sliding connecting component 1 6 is then brought into contact with the snap-fit ​​component 2 5. Rotating the snap-fit ​​component 2 5 by 30 degrees allows it to snap into place. After the snap-fit ​​is fixed, the connecting ring 2 is aligned and in close contact with the end of the extraction pipe 1. Then, the other end of the connecting ring 2 is connected to a conduit to extract the gas. The snap-fit ​​component 2 5 then... After the first component 6 is connected, the threaded connecting post 46 engages with the threaded hole 45, thereby installing the fixing plate 42 on the upper end of the second fixing block 47 of the fixing ring 41. The fixing hole 48 in the fixing plate 42 corresponds to the fixing hole 48 in the first fixing block 43 and is connected by a screw. This can further connect the second snap-fit ​​part 5 and the first component 6, resulting in better stability. The anti-collision soft pad 441 is fixed to the side surface of the fixing ring 41 by the adhesive layer 442, which can provide a good buffer protection effect for the fixing ring 41 and the first component 6.

[0029] Example 2

[0030] The difference between this embodiment and Embodiment 1 is that the shielding assembly 3 includes a sealing gasket 31, a shielding plate 32, fastening holes 33, and a sealing ring 35. The shielding plate 32 is slidably connected to the surface of the extraction tube 1 and located on one side of the protective sleeve 2. A sealing gasket 31 is provided on the surface of the shielding plate 32. A sealing ring 35 is provided inside the shielding plate 32 at a position corresponding to that of the extraction tube 1. Four sets of fastening holes 33 are provided inside the shielding plate 32.

[0031] By adopting the above technical solution, after the sponge expands and seals the holes, the baffle plate 32 is moved so that it can cover one side of the sponge and be fixed by the fastening hole 33. The sealing gasket 31 and the sealing ring 35 can further achieve the sealing effect.

[0032] Specifically, the shielding assembly 3 also includes a water inlet pipe 34 and a sealing plug 36. The water inlet pipe 34 is connected through the interior of the shielding plate 32, and a sealing plug 36 is provided at one end of the water inlet pipe 34.

[0033] By adopting the above technical solution, the sealing plug 36 can be removed, and clean water can be added to the water inlet pipe 34, so that the sponge can remain expanded.

[0034] In this embodiment, after the sponge expands and seals the holes, the baffle plate 32 is moved so that it can cover one side of the sponge. It is then fixed by the fastening hole 33. The sealing gasket 31 and the sealing ring 35 can further achieve a sealing effect. After removing the sealing plug 36, clean water can be added to the water inlet pipe 34 so that the sponge can continue to expand.

[0035] The working principle and usage process of this utility model are as follows: When using this utility model, the extraction pipe 1 is inserted into the gas extraction borehole. Pulling the tear lead 7 causes the sponge inside the protective sleeve 2 to automatically expand and seal the gap between the extraction pipe 1 and the borehole, completing the sealing. The sliding connecting component 6 is then brought into contact with the snap-fit ​​component 5. Rotating the snap-fit ​​component 5 by 30 degrees allows the connecting component 6 to snap into place with the snap-fit ​​component 5. After snap-fitting and fixing, the connecting ring 2 is aligned and in close contact with the end of the extraction pipe 1. Then, the other end of the connecting ring 2 is connected to a conduit to extract gas. After the snap-fit ​​component 25 is connected to the connecting component 6, the threaded connecting post 46 engages with the threaded hole 45, thereby installing the fixing plate 42 onto the fixing ring 41. At the upper end of the second fixing block 47, the fixing hole 48 in the fixing plate 42 corresponds to the fixing hole 48 in the first fixing block 43 and is connected by a screw. This can further connect the snap-fit ​​part 2 5 and the connecting component 1 6, resulting in better stability. The side surface of the fixing ring 41 is fixed with the anti-collision soft pad 441 through the adhesive layer 442, which can provide good buffer protection for the fixing ring 41 and the connecting component 1 6. After the sponge expands and the hole is sealed, the baffle plate 32 is moved so that it can cover one side of the sponge and is fixed through the fastening hole 33. The sealing gasket 31 and the sealing ring 35 can further provide a sealing effect. After removing the sealing plug 36, clean water can be added to the water inlet pipe 34, so that the sponge can continue to expand.

[0036] 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 self-expanding gas extraction sealing device, comprising an extraction pipe (1), wherein a protective sleeve (2) is provided on one end surface of the extraction pipe (1), a tear lead (7) is connected to the surface of the protective sleeve (2), a connecting component (6) is slidably connected to the other end surface of the extraction pipe (1), and a snap-fit ​​component (5) is provided on one side of the connecting component (6) and on the surface of the extraction pipe (1), characterized in that: A fixing component (4) is provided between the second snap-fit ​​component (5) and the first connecting component (6), and a shielding component (3) is installed on the surface of the extraction tube (1) and on the side of the protective sleeve (2).

2. The self-expanding gas extraction sealing device according to claim 1, characterized in that: The fixing component (4) includes a fixing ring (41), a fixing cross plate (42), a first fixing block (43), a second fixing block (47), and a fixing hole (48). The second snap-fit ​​component (5) has a fixing ring (41) on its surface, a second fixing block (47) is fixed on its surface, a fixing cross plate (42) is fixed on its surface, a first fixing block (43) is fixed on its surface, and fixing holes (48) are correspondingly opened inside the fixing cross plate (42) and the first fixing block (43).

3. The self-expanding gas extraction sealing device according to claim 2, characterized in that: The fixing component (4) also includes a threaded hole (45) and a threaded connecting post (46), wherein the bottom of the fixing cross plate (42) is connected to the threaded connecting post (46), and the second fixing block (47) has a threaded hole (45) at the position corresponding to the threaded connecting post (46).

4. A self-expanding gas extraction sealing device according to claim 2, characterized in that: The fixing ring (41) has an anti-collision structure (44) on its side surface. The anti-collision structure (44) includes an anti-collision pad (441) and an adhesive layer (442). The fixing ring (41) has an anti-collision pad (441) connected to the side surface of the connecting component (6) through the adhesive layer (442).

5. A self-expanding gas extraction sealing device according to claim 1, characterized in that: The shielding assembly (3) includes a sealing gasket (31), a shielding plate (32), fastening holes (33) and a sealing ring (35). The shielding plate (32) is slidably connected to the surface of the extraction tube (1) and located on one side of the protective sleeve (2). The shielding plate (32) is provided with a sealing gasket (31) on its surface. The shielding plate (32) is provided with a sealing ring (35) at a position corresponding to the extraction tube (1) inside its interior. The shielding plate (32) has four sets of fastening holes (33) inside its interior.

6. A self-expanding gas extraction sealing device according to claim 5, characterized in that: The shielding assembly (3) also includes a water inlet pipe (34) and a sealing plug (36), wherein the water inlet pipe (34) is connected through the inside of the shielding plate (32), and a sealing plug (36) is provided at one end of the water inlet pipe (34).

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