CN219119212U - Hole sealing device for gas drainage down-hole - Google Patents
Hole sealing device for gas drainage down-hole Download PDFInfo
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- CN219119212U CN219119212U CN202222429075.4U CN202222429075U CN219119212U CN 219119212 U CN219119212 U CN 219119212U CN 202222429075 U CN202222429075 U CN 202222429075U CN 219119212 U CN219119212 U CN 219119212U
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Abstract
The utility model discloses a hole sealing device for a gas drainage down-hole, which is used for solving the problem of accumulated water in a hole sealing section when the gas drainage down-hole is sealed, and particularly discloses a process and a method for realizing the concrete implementation of a pressure explosion valve, a middle water blowing pipe and a grouting pressure explosion valve.
Description
Technical Field
The utility model relates to the technical field of plugging of mine drainage drilling holes, in particular to a hole sealing device for a gas drainage downlink drilling hole
Background
The hole packer is one of important materials for mine drainage drilling hole sealing in recent years, a plurality of hole packer with excellent performance are used in coal mines at present, but the hole packer has a very serious problem in actual use, not only affects the hole sealing effect, but also affects the drainage effect, and the problem is that water accumulation in a drilling hole is caused by adopting hydraulic flushing or natural water supplement of rock cracks in the process of drilling holes in the descending process of drilling holes, grouting slurry firstly seals a front end sealing bag and a rear end sealing bag in the hole sealing process, accumulated water in the middle sections of the front end sealing bag and the rear end sealing bag is sealed in the middle section and cannot be discharged, grouting slurry is well prepared in a specified proportion before grouting, when the prepared grouting slurry is injected into the middle sections of the front end sealing bag and the rear end sealing bag, the water-cement ratio of the grouting slurry is seriously exceeded, and the purpose of sealing the drilling holes is completely lost.
Disclosure of Invention
The utility model aims to provide a hole sealing device for a gas drainage down-hole, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the hole sealing device for the gas drainage down-hole comprises a drainage pipe, a grouting pipe, a slurry returning pipe, a grouting pressure explosion valve, a middle water blowing pipe, a rear end plugging bag, a front end plugging bag and a pressure explosion valve, wherein the drainage pipe penetrates through the rear end plugging bag and the front end plugging bag; the rear end plugging bag and the front end plugging bag are fixed on the drawing and discharging pipe; the grouting pipe penetrates out from the inside of the rear end plugging bag and the front end plugging bag; the grouting pipe penetrates out of the front end plugging bag and is provided with a plug; the middle section of the rear end plugging bag and the front end plugging bag is provided with a slurry return pipe and a middle water blowing pipe; a pressure explosion valve is arranged on the grouting pipe in the rear end plugging bag;
preferably, a pressure explosion valve is arranged on the grouting pipe in the rear end plugging bag.
The middle sections of the rear end plugging bag and the front end plugging bag are provided with middle water blowing pipes.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model presses the accumulated water in the middle sections of the rear end plugging bag and the front end plugging bag into the middle water blowing pipe by using compressed air, and presses the accumulated water in the middle sections of the rear end plugging bag and the front end plugging bag out of the slurry returning pipe.
2. According to the utility model, by arranging the pressure explosion valve, the front end plugging bag is injected with slurry in the grouting process, when the pressure of the grouting pump reaches 80% of the preset pressure value of the pressure explosion valve, the grouting is stopped, the grouting air is pressed in from the middle water blowing pipe, accumulated water in the middle sections of the rear end plugging bag and the front end plugging bag is pressed out from the slurry returning pipe, and the water blowing pipe can be pulled out from the drilling hole after the accumulated water is blown out, so that the next drilling hole is convenient to use.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of another embodiment of the present utility model;
in the figure: 1 pumping pipe, 2 slurry returning pipe, 3 slurry injecting pipe, 4 back end sealing bag, 5 slurry injecting pressure explosion valve, 6 front end sealing bag, 7 plug, 8 middle water blowing pipe and 9 pressure explosion valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the present utility model provides a technical solution: the hole sealing device for the gas drainage down-hole comprises a drainage pipe (1), a slurry return pipe (2) and a slurry injection pipe (3), wherein the drainage pipe (1) penetrates from the middle parts of a rear end plugging bag (4) and a front end plugging bag (6); the rear end plugging bag (4) and the front end plugging bag (6) are fixed on the drawing and discharging pipe (1); the grouting pipe (3) penetrates out from the insides of the rear end plugging bag (4) and the front end plugging bag (6), a plug (7) is arranged at the penetrating-out end, and a grouting pressure explosion valve (5) and a pressure explosion valve (9) are arranged in the middle; the pressure explosion valve (9) is arranged in the rear end plugging bag (4); the middle water blowing pipe (8) penetrates out of the middle part of the rear end plugging bag (4) from the position 100mm away from the front end plugging bag (6).
Example 1
As shown in fig. 1, when the drilling grouting is carried out by downward pumping and discharging, as the pressure explosion valve (9) is arranged in the rear end sealing bag (4), grouting slurry is firstly filled into the front end sealing bag (6), when the grouting pump pressure value shows that 80% of the preset value of the pressure explosion valve (9) is reached, grouting is stopped, compressed air is pressed in from the middle water blowing pipe (8), accumulated water in the middle sections of the rear end sealing bag (4) and the front end sealing bag (6) is pressed out from the slurry returning pipe (2) by the air pressed in the middle water blowing pipe (8), when the air is discharged from the slurry returning pipe (2), the middle water blowing pipe (8) is drawn out from the rear end sealing bag (4), and cleaning of accumulated water in the middle sections of the rear end sealing bag (4) and the front end sealing bag (6) is completed, and grouting is continued.
Example 2
As shown in fig. 2, when the grouting slurry is pumped down and discharged into the drill hole, the rear end sealing bag (4) and the front end sealing bag (6) are filled with the grouting slurry, when the pressure value of the grouting pump is displayed to reach 80% of the preset value of the grouting pressure explosion valve (5), the grouting is stopped, compressed air is pressed in from the middle water blowing pipe (8), accumulated water in the middle sections of the rear end sealing bag (4) and the front end sealing bag (6) is pressed out from the slurry returning pipe (2) by the air pressed in the middle water blowing pipe (8), and when the air is discharged from the slurry returning pipe (2), the cleaning of accumulated water in the middle sections of the rear end sealing bag (4) and the front end sealing bag (6) is completed, and grouting is continued.
Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The hole sealing device for the gas drainage down-hole comprises a drainage pipe (1), a slurry return pipe (2) and a slurry injection pipe (3), wherein the drainage pipe (1) penetrates from the middle parts of a rear end plugging bag (4) and a front end plugging bag (6); the rear end plugging bag (4) and the front end plugging bag (6) are fixed on the drawing and discharging pipe (1); the grouting pipe (3) penetrates out from the insides of the rear end plugging bag (4) and the front end plugging bag (6), a plug (7) is arranged at the penetrating-out end, and a grouting pressure explosion valve (5) and a pressure explosion valve (9) are arranged in the middle; the pressure explosion valve (9) is arranged in the rear end plugging bag (4); the middle part of the middle part blowing pipe (8) penetrates out from the middle part of the rear end plugging bag (4) to the position 100mm away from the front end plugging bag (6).
2. The hole sealing device for gas drainage down-hole drilling according to claim 1, wherein: the middle part of the grouting pipe (3) is provided with a grouting pressure explosion valve (5) and a pressure explosion valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222429075.4U CN219119212U (en) | 2022-09-14 | 2022-09-14 | Hole sealing device for gas drainage down-hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222429075.4U CN219119212U (en) | 2022-09-14 | 2022-09-14 | Hole sealing device for gas drainage down-hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219119212U true CN219119212U (en) | 2023-06-02 |
Family
ID=86528735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222429075.4U Active CN219119212U (en) | 2022-09-14 | 2022-09-14 | Hole sealing device for gas drainage down-hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219119212U (en) |
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2022
- 2022-09-14 CN CN202222429075.4U patent/CN219119212U/en active Active
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