CN205297457U - A hole sealing device for determining gas pressure - Google Patents
A hole sealing device for determining gas pressure Download PDFInfo
- Publication number
- CN205297457U CN205297457U CN201620003991.3U CN201620003991U CN205297457U CN 205297457 U CN205297457 U CN 205297457U CN 201620003991 U CN201620003991 U CN 201620003991U CN 205297457 U CN205297457 U CN 205297457U
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- CN
- China
- Prior art keywords
- pipe
- pressure
- hole sealing
- measuring
- hole
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Abstract
The utility model discloses a hole sealing device for determining gas pressure, including the slip casting pipe, pressure -measuring pipe and fix the hole sealing bag at the pressure -measuring pipe both ends. The slip casting pipe is at intermediate position device explosion valve, the pressure -measuring pipe comprises multisection steel pipe and a lesson screen pipe, use ferrule fixed connection between the steel pipe, every knotted bar iron pipe on all be equipped with and support the boosting device, it comprises skeleton and wheel to support the boosting device. The utility model discloses effectively solve downthehole pressure -measuring pipe and leaded to the problem of pressure -measuring pipe in kneck gas leakage because the dead weight sinks to hugging closely the pore wall, the utility model discloses make at the hole sealing in -process and change rolling friction into by sliding friction between pressure -measuring pipe and the pore wall, reduced frictional resistance between the two, effectively solved the problem of hole sealing in -process low tube difficulty.
Description
Technical field
This utility model relates to a kind of down-hole hole sealing device, is mainly used in measuring coal-bed gas pressure.
Background technology
Along with being continuously increased of coal mining depth, coal and gas prominent disaster is day by day serious. The coal and gas prominent accident frequency of gaseous mine and highly gassy mine so occurs, and part gaseous mine and highly gassy mine are also due to occur prominent and directly upgrade to projecting mine. Gas pressure is to identify an important parameter of coal and gas prominent, it is necessary to carry out the mensuration of coal-bed gas pressure.
Currently used maximum pressure measurement method for sealing: a knotter screen pipe is set in pressure-measuring pipe termination as pressure measurement air chamber, steel pipe is fixed after screen casing sealing of hole pouch, described sealing of hole pouch connects Grouting Pipe, described Grouting Pipe arranges explosive valve in centre position, fix with pressure measurement duct tapes and together deliver to coal hole terminal, connect with pipe collar is fixing between described steel pipe, in the fixing sealing of hole pouch of pressure-measuring pipe end, be connected with Grouting Pipe. Injecting cement grout with grouting pump by Grouting Pipe subsequently, treat that two ends sealing of hole pouch expands completely, explosive valve automatically opens up fills space slip casting between pouch, until slip casting completes, sealing of hole terminates. Owing to steel pipe self is heavier, lower pipe is relatively difficult, it is necessary to personnel are more; Owing to pressure measurement pipeline seam easily leaks gas, and under gravity with hole wall patch and, serosity is difficult to parcel pipeline, easy and hole wall crack is through so that pressure manifestation distortion.
Summary of the invention
In consideration of it, this utility model provides the hole sealing device of a kind of down-hole coal bed gas pressure measurement.
The technical scheme that this utility model is taked is: a kind of hole sealing device for measuring gas pressure, including Grouting Pipe, pressure-measuring pipe and be fixed on the sealing of hole pouch at pressure-measuring pipe two ends, described pressure-measuring pipe is made up of plurality of sections of steel pipes and a knotter screen pipe, connect with pipe collar is fixing between described steel pipe, described Grouting Pipe is designed with supporting assist device on intermediate position arrangements explosive valve, described often joint steel pipe, and described support assist device is made up of skeleton and wheel.
As preferably, described sealing of hole pouch adopts air penetrability 120 200L/m2The filter cloth of s.
As preferably, the internal diameter of described support assist device upper skeleton is more than the external diameter of steel pipe.
As preferably, the internal diameter of described support assist device upper skeleton is less than the external diameter of pipe collar.
As preferably, on described support assist device, wheel has 3.
Beneficial effect: owing to pressure measurement pipeline being supported so that pressure measurement pipeline overcomes deadweight to be no longer close to hole wall, efficiently solves the problem that in hole, pressure-measuring pipe is close to hole wall due to deadweight sinking and is caused pressure-measuring pipe to leak gas at seam; Owing to described support arrangement arranges wheel, make to be changed into rolling friction by sliding friction between pressure-measuring pipe and hole wall in sealing of hole process, reduce frictional resistance between the two, efficiently solve the problem of lower pipe difficulty in sealing of hole process.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is hole sealing device schematic diagram of the present utility model.
Fig. 2 is support assist device schematic diagram of the present utility model.
Detailed description of the invention
In order to make the purpose of this utility model and advantage clearly understand, below in conjunction with embodiment, this utility model is entered
Row further describes. Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.
This detailed description of the invention is by the following technical solutions: a kind of hole sealing device for measuring gas pressure, including Grouting Pipe (1), pressure-measuring pipe (2) and be fixed on the sealing of hole pouch (3) at pressure-measuring pipe two ends, described pressure-measuring pipe (2) is made up of plurality of sections of steel pipes (2) and a knotter screen pipe (7), connect with pipe collar (5) is fixing between described steel pipe (2), described Grouting Pipe is in intermediate position arrangements explosive valve (4), described often joint steel pipe (2) is designed with support assist device (6), described support assist device (6) is made up of skeleton (8) and wheel (9).
Described sealing of hole pouch (3) adopts air penetrability 120 200L/m2The filter cloth of s.
The internal diameter of described support assist device (6) upper skeleton (8) is more than the external diameter (10) of steel pipe.
The internal diameter of described support assist device (6) upper skeleton (8) is less than the external diameter (11) of pipe collar.
The upper wheel (9) of described support assist device (6) has 3.
Operation principle: after pore-forming, fully cleans coal hole, one knotter screen pipe (7) is set in pressure-measuring pipe (2) termination as pressure measurement air chamber, sealing of hole pouch (3) fixed afterwards by screen casing (7), described sealing of hole pouch (3) connects Grouting Pipe (1), described Grouting Pipe (1) is in intermediate position arrangements explosive valve (4), coal hole terminal is together delivered to adhesive tape is fixing with pressure-measuring pipe (2), described process connects with pipe collar (5) is fixing between steel pipe (4), before connecing next joint steel pipe (2) again, save upper one and steel pipe (2) arranges support assist device (6), repetitive operation, thus realizing the supporting role to pressure-measuring pipe, in lower pipe process, the skeleton (8) of described support assist device (6) can be subject to the constraint of rear pipe collar (5) and be in this pipe collar (5) front, rotate only by the wheel (9) supporting assist device (6) under effect of contraction and travel forward, thus realizing the booster action to pressure-measuring pipe (2).
Owing to pressure measurement pipeline being supported so that pressure measurement pipeline overcomes deadweight to be no longer close to hole wall, efficiently solve the problem that in hole, pressure-measuring pipe is close to hole wall due to deadweight sinking and is caused pressure-measuring pipe to leak gas at seam; Owing to described support arrangement arranges wheel, make to be changed into rolling friction by sliding friction between pressure-measuring pipe and hole wall in sealing of hole process, reduce frictional resistance between the two, efficiently solve the problem of lower pipe difficulty in sealing of hole process.
Claims (5)
1. the hole sealing device being used for measuring gas pressure, including Grouting Pipe (1), pressure-measuring pipe (2) and be fixed on the sealing of hole pouch (3) at pressure-measuring pipe two ends, described pressure-measuring pipe (2) is made up of plurality of sections of steel pipes (2) and a knotter screen pipe (7), connect with pipe collar (5) is fixing between described steel pipe (2), described Grouting Pipe is in intermediate position arrangements explosive valve (4), being designed with on described often joint steel pipe (2) supporting assist device (6), described support assist device (6) is made up of skeleton (8) and wheel (9).
2. a kind of hole sealing device for measuring gas pressure according to claim 1, it is characterised in that: described sealing of hole pouch (3) adopts air penetrability 120 200L/m2The filter cloth of s.
3. a kind of hole sealing device for measuring gas pressure according to claim 1, it is characterised in that: the internal diameter of described support assist device (6) upper skeleton (8) is more than the external diameter (10) of steel pipe.
4. a kind of hole sealing device for measuring gas pressure according to claim 3, it is characterised in that: the internal diameter of described support assist device (6) upper skeleton (8) is less than the external diameter (11) of pipe collar.
5. a kind of hole sealing device for measuring gas pressure according to claim 4, it is characterised in that: the upper wheel (9) of described support assist device (6) has 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620003991.3U CN205297457U (en) | 2016-01-06 | 2016-01-06 | A hole sealing device for determining gas pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620003991.3U CN205297457U (en) | 2016-01-06 | 2016-01-06 | A hole sealing device for determining gas pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297457U true CN205297457U (en) | 2016-06-08 |
Family
ID=56485729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620003991.3U Expired - Fee Related CN205297457U (en) | 2016-01-06 | 2016-01-06 | A hole sealing device for determining gas pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205297457U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025890A (en) * | 2018-05-15 | 2018-12-18 | 菏泽学院 | A kind of coal mine gas measures water outlet detection and the sealing of hole drainage arrangement of drilling |
| CN113503185A (en) * | 2021-06-23 | 2021-10-15 | 中国矿业大学 | Intelligent gas pressure measuring method |
| CN115095296A (en) * | 2022-06-09 | 2022-09-23 | 华晋焦煤有限责任公司 | Multi-section type blasting airbag grouting hole sealing device and method |
-
2016
- 2016-01-06 CN CN201620003991.3U patent/CN205297457U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025890A (en) * | 2018-05-15 | 2018-12-18 | 菏泽学院 | A kind of coal mine gas measures water outlet detection and the sealing of hole drainage arrangement of drilling |
| CN109025890B (en) * | 2018-05-15 | 2020-11-24 | 菏泽学院 | Water outlet detection and hole sealing drainage device for coal mine gas measurement drilling |
| CN113503185A (en) * | 2021-06-23 | 2021-10-15 | 中国矿业大学 | Intelligent gas pressure measuring method |
| CN115095296A (en) * | 2022-06-09 | 2022-09-23 | 华晋焦煤有限责任公司 | Multi-section type blasting airbag grouting hole sealing device and method |
| CN115095296B (en) * | 2022-06-09 | 2024-04-05 | 华晋焦煤有限责任公司 | Multistage blasting air bag grouting hole sealing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20170106 |