Reusable gas extraction drilling hole packer

Abstract

The utility model discloses a reusable gas extraction drilling hole packer, which comprises a gas pipe, a plurality of hole sealing units, a grouting pipe and a driving component, the gas pipe is used for gas extraction, the plurality of hole sealing units are arranged on the peripheral side of the gas pipe and are arranged at intervals along the extension direction of the gas pipe, and the grouting pipe is arranged on the periphery of the gas pipe. An annular cavity used for being filled with a hole sealing medium is limited between every two adjacent hole sealing units, each hole sealing unit comprises an elastic piece, the elastic pieces are used for expanding outwards when being compressed so as to seal the annular cavities, the grouting pipe communicates with at least one annular cavity, and the grouting pipe is used for conveying the hole sealing medium into the annular cavities. The driving assembly acts on the elastic pieces of the multiple hole sealing units and is used for applying acting force to the elastic pieces so as to compress the elastic pieces. The hole packer not only meets the use requirement of hole sealing in the gas extraction process, but also can be recycled after gas extraction is completed, so that waste of materials and funds is avoided, and the extraction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas extraction, and in particular to a reusable gas extraction drilling hole sealer. Background Art

[0002] Gas is commonly found in coal seams. During the process of coal mining, a large amount of gas gushes out from the coal body, causing excessive gas in the working face. The gushing gas can cause accidents such as gas explosion, gas combustion or gas fumigation, and even worse, coal and gas outburst accidents. In order to reduce the threat and impact of gas on coal mine safety production, my country's coal mining enterprises will construct a large number of gas extraction projects every year. However, in the existing technology, the sealers used for gas extraction are disposable consumables, that is, after gas extraction, a large number of extraction pipes and sealers will be left in the coal body and cannot be recycled, resulting in a huge waste of materials and funds. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model proposes a reusable gas extraction drilling hole sealer, which not only meets the need for sealing the hole during the gas extraction process, but also can be recycled and reused after the gas extraction is completed, thereby avoiding waste of materials and funds and reducing extraction costs.

[0005] The reusable gas extraction drilling sealer of the utility model embodiment comprises:

[0006] A gas pipe, wherein the gas pipe is used for extracting gas;

[0007] A plurality of sealing units, each of which is disposed on the outer circumference of the gas pipe and arranged at intervals along the extension direction of the gas pipe, and an annular cavity for filling a sealing medium is defined between two adjacent sealing units, and the sealing unit includes an elastic member, and the elastic member is used to expand outward when compressed to achieve sealing of the annular cavity;

[0008] A grouting pipe, the grouting pipe is connected to at least one of the annular cavities, and the grouting pipe is used to transport the sealing medium into the annular cavity;

[0009] A driving assembly acts on the elastic members of the plurality of sealing units and is used to apply a force to the elastic members to achieve compression of the elastic members.

[0010] In some embodiments, the sealing unit further comprises:

[0011] A fixing member, wherein the fixing member is fixed to the outer peripheral side of the gas pipe;

[0012] A movable part is assembled on the outer peripheral side of the gas pipe and is movable along the extension direction of the gas pipe. The elastic part is arranged between the fixed part and the movable part, and the movable part is connected to the driving component. The driving component is used to drive the movable part to move toward the fixed part to achieve compression of the elastic part.

[0013] In some embodiments, the drive assembly comprises:

[0014] A connecting member connected to the movable member of each of the sealing units;

[0015] A rotating member is rotatably assembled on the gas pipe, and is used to wrap the connecting member around the outer peripheral side of the rotating member during rotation so as to drive the movable member to move by pulling the connecting member.

[0016] In some embodiments, the driving assembly includes a handle, which is disposed on the rotating member and is used to drive the rotating member to rotate.

[0017] In some embodiments, there are two connecting members, the gas pipe is located between the two connecting members, the rotating member includes a rotating shaft and two rotating wheels, the rotating shaft is rotatably assembled on the gas pipe, the two rotating wheels are both arranged on the rotating shaft, and the gas pipe is located between the two rotating wheels, and the two connecting members are wound on the two rotating wheels one by one.

[0018] In some embodiments, the connecting member is a steel wire rope.

[0019] In some embodiments, the driving assembly includes a limit member, which is detachably assembled on the rotating member, and the limit member is used to stop the gas pipe to achieve anti-rotation positioning of the rotating member.

[0020] In some embodiments, the driving assembly is disposed at the outer end of the gas pipe, the movable part of each sealing unit is disposed on the side facing the inner end of the gas pipe, and the connecting part passes through the fixing part and the elastic part of the sealing unit.

[0021] In some embodiments, the fixed member and the movable member are both annular, the elastic member is tubular, and the elastic member is sleeved on the outer circumference of the gas pipe.

[0022] In some embodiments, the grouting pipe is a flexible pipe;

[0023] And / or, there are two sealing units.

[0024] Beneficial effect: The hole sealer of the embodiment of the utility model not only meets the need for sealing holes during gas extraction, but can also be recycled and reused after the gas extraction is completed, thereby avoiding waste of materials and funds and reducing extraction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the hole sealer according to an embodiment of the utility model.

[0026] Reference numerals:

[0027] 1-movable part, 2-elastic part, 3-fixed part, 4-connecting part, 5-rotating part, 6-handle, 7-grouting pipe, 8-gas pipe, 9-limiting part; 10-sealing unit; 11-annular cavity; 12-driving assembly. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0029] like Figure 1 As shown, the reusable gas extraction drilling hole sealer (hereinafter referred to as the sealer) of the embodiment of the utility model includes a gas pipe 8, a plurality of sealing units 10, a grouting pipe 7 and a driving assembly 12.

[0030] The gas pipe 8 is used for extracting gas. Specifically, the gas pipe 8 can be a round tube and can extend along the front-to-back direction. When in use, the front end of the gas pipe 8 can be inserted into the completed borehole, and the rear end of the gas pipe 8 can be located outside the borehole.

[0031] The gas pipe 8 can be formed by processing non-metallic materials, thereby enhancing the safety of use and avoiding the situation of sparks caused by metal contact. In some other embodiments, the material of the gas pipe 8 can also be metal such as stainless steel, in which case the outer peripheral side of the gas pipe 8 can be coated with a protective coating.

[0032] The plurality of sealing units 10 are disposed on the outer circumference of the gas pipe 8 and are arranged at intervals along the extension direction of the gas pipe 8, and an annular cavity 11 for filling the sealing medium is defined between two adjacent sealing units 10. Figure 1 As shown, two sealing units 10 can be provided, wherein one sealing unit 10 can be provided near the front end of the gas pipe 8 , and the other sealing unit 10 can be provided near the rear end of the outer wire pipe, and the space between the two sealing units 10 is the annular cavity 11 .

[0033] Each sealing unit 10 includes an elastic member 2. The material of the elastic member 2 can be rubber or the like, and can be specifically an expansion rubber ring. The elastic member 2 is used to expand outward when compressed to achieve sealing of the annular cavity 11. That is, when the elastic member 2 is subjected to an extrusion force, the elastic member 2 will compress and expand. At this time, the outer peripheral surface of the elastic member 2 will fit tightly with the wall of the borehole, thereby achieving sealing of the borehole.

[0034] It should be noted that, when in use, the elastic parts 2 of the two sealing units 10 can be compressed synchronously. At this time, the two expanded and deformed elastic parts 2 can be respectively sealed on the front and rear sides of the annular cavity 11, thereby realizing the sealing of the annular cavity 11 and meeting the need for injecting sealing media into the annular cavity 11. The sealing media can specifically be liquid, slurry and other fluid materials, which facilitates the discharge from the borehole after gas extraction.

[0035] The grouting pipe 7 is connected to at least one annular cavity 11, and the grouting pipe 7 is used to transport the sealing medium into the annular cavity 11. Figure 1 As shown, there can be only one grouting pipe 7, and the diameter of the grouting pipe 7 is smaller than the diameter of the gas pipe 8. The grouting pipe 7 can extend from the rear end of the gas pipe 8 to the front end of the gas pipe 8. When there is only one sealing unit 10, the gas pipe 8 can pass through the sealing unit 10 at the rear side and extend into the annular cavity 11.

[0036] After the elastic members 2 of the two sealing units 10 block and seal the annular cavity 11 , a sealing medium can be injected into the annular cavity 11 through the grouting pipe 7 , thereby meeting the sealing requirement.

[0037] The driving assembly 12 acts on the elastic members 2 of the plurality of sealing units 10 and is used to apply a force to the elastic members 2 to compress the elastic members 2. For example, Figure 1 As shown, the driving assembly 12 can be assembled on the gas pipe 8 and located at the rear end of the gas pipe 8, and the driving assembly 12 can be directly connected to the elastic member 2. When in use, the driving assembly 12 can apply a force to the elastic member 2 of each sealing unit 10, thereby satisfying the use requirement of compressing the elastic member 2.

[0038] It should be noted that after the gas extraction is completed, the driving assembly 12 can release the compression of the multiple elastic parts 2. At this time, the elastic parts 2 can restore their shapes under the action of their own elasticity, thereby releasing the sealing fit with the borehole wall. At this time, the above-mentioned sealing medium can be discharged from the borehole through the gap between the sealing unit 10 and the borehole wall. After it has completely flowed out, the sealer can also be taken out of the borehole and can be used again next time after simple maintenance and cleaning of the seal.

[0039] The hole sealer of the embodiment of the utility model not only meets the need for sealing holes during gas extraction, but can also be recycled and reused after the gas extraction is completed, thereby avoiding waste of materials and funds and reducing the overall extraction cost.

[0040] In some embodiments, the sealing unit 10 also includes a fixed part 3 and a movable part 1, the fixed part 3 is fixed on the outer peripheral side of the gas pipe 8, the movable part 1 is assembled on the outer peripheral side of the gas pipe 8 and is movable along the extension direction of the gas pipe 8, the elastic part 2 is arranged between the fixed part 3 and the movable part 1, and the movable part 1 is connected to the driving component 12, and the driving component 12 is used to drive the movable part 1 to move toward the fixed part 3 to achieve compression of the elastic part 2.

[0041] For example, Figure 1 As shown, the fixed part 3 and the movable part 1 can both be disc-shaped, and the radial dimensions of the fixed part 3 and the movable part 1 can be consistent. The elastic part 2 can generally be a circular tubular structure, and the fixed part 3, the movable part 1, and the elastic part 2 can all be sleeved on the outer peripheral side of the gas pipe 8, wherein the fixed part 3 can be connected and fixed to the gas pipe 8, and the connection method can be welding, integral molding, bonding, etc. The movable part 1 of each sealing unit 10 can be arranged on the front side of the elastic part 2, and the fixed part 3 can be arranged on the rear side of the elastic part 2.

[0042] The driving component 12 can be connected and fixed to the movable part 1 of each sealing unit 10. When the sealer is placed in the drilled hole, the driving component 12 can drive the movable part 1 of each sealing unit 10 to move backward, thereby squeezing the elastic part 2 of each sealing unit 10, and then expanding the elastic part 2 and completing the sealing of the drilled hole.

[0043] In some embodiments, the driving assembly 12 includes a connecting member 4 and a rotating member 5, the connecting member 4 is connected to the movable member 1 of each sealing unit 10, the rotating member 5 is rotatably assembled on the gas pipe 8, and the rotating member 5 is used to wrap the connecting member 4 around the outer peripheral side of the rotating member 5 when rotating to drive the movement of the movable member 1 by pulling the connecting member 4.

[0044] For example, Figure 1 As shown, the connecting member 4 can be a steel wire rope, so that while ensuring a high structural strength, it also has a certain flexibility, fully meeting the use needs of pulling. In some other embodiments, the connecting member 4 can also be a rod-shaped structure, a high-strength rope, etc.

[0045] The rotating member 5 can be rotatably assembled at the rear end of the gas pipe 8. For example, a bracket for assembling the rotating member 5 can be specially provided on the outer side of the gas pipe 8, and the rotating member 5 can be rotatably assembled on the bracket. In some other embodiments, the rotating member 5 can also pass through the gas pipe 8 and be rotatably assembled with the gas pipe 8 in a sealed manner.

[0046] The rear end of the connecting member 4 can be connected to the rotating member 5 and wrapped around the outer peripheral side of the rotating member 5, and the front end of the connecting member 4 can pass through the elastic member 2 and the fixing member 3 of each sealing unit 10 and be welded to the movable member 1 of each sealing unit 10.

[0047] When in use, the connecting member 4 can be wound by rotating the rotating member 5, and the wound connecting member 4 will pull each movable member 1, so that each elastic member 2 can be compressed.

[0048] In some embodiments, the driving assembly 12 includes a handle 6, which is disposed on the rotating member 5 and is used to drive the rotating member 5 to rotate. Figure 1 As shown, the handle 6 can be fixed to the end of the rotating member 5, thereby improving the convenience of rotating the rotating member 5.

[0049] In some embodiments, there are two connecting members 4, the gas pipe 8 is located between the two connecting members 4, the rotating member 5 includes a rotating shaft and two rotating wheels, the rotating shaft is rotatably assembled on the gas pipe 8, the two rotating wheels are both arranged on the rotating shaft, and the gas pipe 8 is located between the two rotating wheels, and the two connecting members 4 are wound on the two rotating wheels one by one.

[0050] For example, Figure 1 The two connectors 4 can be arranged on both sides of the gas pipe 8 and are arranged in mirror symmetry with respect to the gas pipe 8. The rotating shaft can be a circular shaft, and the rotating shaft can be arranged perpendicular to the gas pipe 8. The two wheels can be fixed at both ends of the rotating shaft. The rear ends of the two connectors 4 can be connected to the corresponding wheels and wound around the corresponding wheels.

[0051] When the rotating member 5 rotates, the two connecting members 4 can be wound synchronously, and at this time, the two connecting members 4 can simultaneously drive multiple movable members 1 and complete the compression of each elastic member 2. As a result, the force on the elastic member 2 during compression can be symmetrical, thereby ensuring the stability of the compression and the consistency of the compression in each direction.

[0052] In some embodiments, the driving assembly 12 includes a stopper 9 , which is detachably mounted on the rotating member 5 , and is used to stop the gas pipe 8 to achieve anti-rotation positioning of the rotating member 5 .

[0053] For example, Figure 1 As shown, the limit member 9 can be a structural member such as a latch, the rotating member 5 can be provided with a plurality of through holes, and the plurality of through holes can be arranged at intervals along the circumference of the rotating member 5. A slot can be provided on the gas pipe 8. After the compression of each elastic member 2 is completed by rotating the rotating member 5, the limit member 9 can be passed through the corresponding through hole and inserted into the slot, so that the rotating member 5 can be locked, and then each elastic member 2 can be kept in a compressed state, thereby ensuring the sealing effect of the gas extraction process.

[0054] In some embodiments, the driving assembly 12 is disposed at the outer end of the gas pipe 8 , the movable part 1 of each sealing unit 10 is disposed on the inner end side facing the gas pipe 8 , and the connecting part 4 passes through the fixing part 3 and the elastic part 2 of the sealing unit 10 .

[0055] For example, Figure 1 As shown, the outer end of the gas tube 8 is the end located outside the borehole during use, the inner end of the gas tube 8 is the end located inside the borehole during use, the drive assembly 12 is located at the outer end of the gas tube 8, and each elastic member 2 and each fixing member 3 may be provided with a through hole for the connecting member 4 to pass through, thereby facilitating the assembly of the connecting member 4 and each sealing unit 10.

[0056] In some embodiments, the grouting pipe 7 is a flexible pipe, thereby, while satisfying the requirement of sealing medium into the annular cavity 11, the grouting pipe 7 can also adapt to the deformation of the elastic member 2, thereby improving the compatibility with the elastic member 2.

[0057] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A reusable gas extraction drilling sealer, characterized in that: include: A gas pipe, wherein the gas pipe is used for extracting gas; A plurality of sealing units, each of which is disposed on the outer circumference of the gas pipe and arranged at intervals along the extension direction of the gas pipe, and an annular cavity for filling a sealing medium is defined between two adjacent sealing units, and the sealing unit includes an elastic member, and the elastic member is used to expand outward when compressed to achieve sealing of the annular cavity; A grouting pipe, the grouting pipe is connected to at least one of the annular cavities, and the grouting pipe is used to transport the sealing medium into the annular cavity; A driving assembly acts on the elastic members of the plurality of sealing units and is used to apply a force to the elastic members to achieve compression of the elastic members.

2. The reusable gas extraction drilling sealer according to claim 1, characterized in that: The sealing unit further comprises: A fixing member, wherein the fixing member is fixed to the outer peripheral side of the gas pipe; A movable part is assembled on the outer peripheral side of the gas pipe and is movable along the extension direction of the gas pipe. The elastic part is arranged between the fixed part and the movable part, and the movable part is connected to the driving component. The driving component is used to drive the movable part to move toward the fixed part to achieve compression of the elastic part.

3. The reusable gas extraction drilling sealer according to claim 2, characterized in that: The drive assembly comprises: A connecting member connected to the movable member of each of the sealing units; A rotating member is rotatably assembled on the gas pipe, and is used to wrap the connecting member around the outer peripheral side of the rotating member during rotation so as to drive the movable member to move by pulling the connecting member.

4. The reusable gas extraction drilling sealer according to claim 3, characterized in that: The driving assembly comprises a handle, which is arranged on the rotating member and is used to drive the rotating member to rotate.

5. The reusable gas extraction drilling sealer according to claim 3, characterized in that: There are two connecting parts, the gas pipe is located between the two connecting parts, the rotating part includes a rotating shaft and two rotating wheels, the rotating shaft is rotatably assembled on the gas pipe, the two rotating wheels are both arranged on the rotating shaft, and the gas pipe is located between the two rotating wheels, and the two connecting parts are wound on the two rotating wheels in a one-to-one correspondence.

6. The reusable gas extraction drilling sealer according to claim 3, characterized in that: The connecting piece is a steel wire rope.

7. The reusable gas extraction drilling sealer according to claim 3, characterized in that: The driving assembly comprises a limiting member, which is detachably mounted on the rotating member and is used to stop the gas pipe to achieve anti-rotation positioning of the rotating member.

8. The reusable gas extraction drilling sealer according to claim 3, characterized in that: The driving assembly is arranged at the outer end of the gas pipe, the movable part of each sealing unit is arranged on the side facing the inner end of the gas pipe, and the connecting part passes through the fixing part and the elastic part of the sealing unit.

9. The reusable gas extraction drilling sealer according to claim 2, characterized in that: The fixed part and the movable part are both annular, the elastic part is tubular, and the elastic part is sleeved on the outer peripheral side of the gas pipe.

10. The reusable gas extraction borehole sealer according to any one of claims 1 to 9, characterized in that: The grouting pipe is a flexible pipe; And / or, there are two sealing units.

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