CN204476353U - A kind of mash gas pumping drilling plugging device - Google Patents
A kind of mash gas pumping drilling plugging device Download PDFInfo
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- CN204476353U CN204476353U CN201520090548.XU CN201520090548U CN204476353U CN 204476353 U CN204476353 U CN 204476353U CN 201520090548 U CN201520090548 U CN 201520090548U CN 204476353 U CN204476353 U CN 204476353U
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- Prior art keywords
- sealing
- overfall
- hole
- boring
- gas pumping
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Abstract
A kind of mash gas pumping drilling plugging device that the utility model provides, wherein, the required block section of boring is close to by elasticity sealing of hole band, the two ends of elasticity sealing of hole band are provided with polyurethane hole sealing bag, multiple water suction endless belt is provided with in elasticity sealing of hole band between two polyurethane hole sealing bags, Grouting Pipe outer end is connected with grouting pump, overfall controls to be provided with dividing plate in tank, pressure air pump is communicated with in the confined space on the dividing plate top of overfall control tank, the confined space of the lower partition is communicated with return pipe, pressure sensor is provided with in the confined space of the lower partition of overfall control tank, pressure sensor is connected with pressure air pump, the utility model adopts polyurethane hole sealing bag, elasticity sealing of hole band, the structure that water suction endless belt cooperatively interacts, plugging structure is more reasonable, adopt pressure sensor and overfall to control tank to cooperatively interact, effectively improve the degree of accuracy of borehole sealing, decrease the appearance of mortar solidification process intermediate gap in shutoff process, further increase plugging effect.
Description
Technical field
The utility model relates to a kind of plugging device, is specially a kind of mash gas pumping drilling plugging device, belongs to coal mine equipment and production technical field.
Background technology
Coal bed gas extraction is generally utilize gas pump to extract the gas of coal seam middle and high concentration, and the pipe network by isolating with tunnel, the gas ejectment of the high concentration of extraction to ground, coal bed gas extraction solves face gas to gush out, prevent and treat the effective ways of gas exceeding limit.The most coal seam of China belongs to lower permeability seam, due to factors such as drilling and sealing gas leakage, the gas extraction concentration of China's most of lower permeability seam mine is too low, low concentration gas is difficult to utilize or utilize high cost, that is, existing hole sealing technology is far from playing due sealing and completely cuts off effect, drilling and sealing technology is one of key factor determining gas pumping effect quality, in the prior art, first hole in coal seam, sleeve pipe is entered under again in boring, and utilize slurries to be fixed by sleeve pipe, then hose connection nipple and extraction system is used, gas pumping can be carried out after connection.But, after boring, setting of casing, slip casting fix and the sealing of hole process being undertaken being connected by flexible pipe and extraction system longer, in this process, if there is spray orifice phenomenon, easy generation casualty accident, sealing of hole effect is also undesirable, easily occurs the not good gas leak phenomenon of sealing of hole, trace it to its cause, be arrange unreasonable to plugging structure, the degree of accuracy that overfall arranges assurance is not high enough, governs the effect of borehole sealing.
For solving each above technical problem, the utility model provides a kind of mash gas pumping drilling plugging device, its structure is simple, easy to use, reliably, by arranging rational plugging structure, adopt polyurethane hole sealing bag, elasticity sealing of hole band, the structure that water suction endless belt cooperatively interacts, make plugging structure more reasonable, substantially increase plugging effect, effectively make use of polyurethane hole sealing bag and water suction endless belt carrys out the advantage of plugging gap, in addition, the utility model adopts pressure sensor and overfall to control tank and cooperatively interacts, effectively control the pressure of overfall pressure and slurries accurately, effectively improve the degree of accuracy of borehole sealing, decrease the appearance of mortar solidification process intermediate gap in shutoff process, further increase plugging effect.
Summary of the invention
For above-mentioned situation, for solving the defect of prior art, the object of the utility model just there is provided a kind of mash gas pumping drilling plugging device, it comprises the gas pumping pipe in boring, Grouting Pipe, return pipe, polyurethane hole sealing bag, elasticity sealing of hole band, water suction endless belt and overfall control tank, it is characterized in that, block section needed for described boring is close to by described elasticity sealing of hole band, the two ends of described elasticity sealing of hole band are provided with described polyurethane hole sealing bag, multiple described water suction endless belt is provided with in elasticity sealing of hole band between two described polyurethane hole sealing bags, described Grouting Pipe outer end is connected with grouting pump, described return pipe outer end is connected with overfall and controls tank, described overfall controls to be provided with dividing plate in tank, pressure air pump is communicated with in the confined space on the dividing plate top of described overfall control tank, the confined space of described the lower partition is communicated with described return pipe, pressure sensor is provided with in the confined space of the lower partition of described overfall control tank, described pressure sensor is connected with described pressure air pump.
Further, as preferably, the degree of depth that described return pipe stretches into described boring is greater than the degree of depth that described Grouting Pipe stretches into described boring.
Further, as preferably, described return pipe is at least through being in the innermost described water suction endless belt of boring, and described Grouting Pipe is in outside described water suction endless belt.
Further, as preferably, described polyurethane sealing of hole pocket position is 3-4m from the outer end of described boring.
Further, as preferably, the internal diameter of described drainage tube is 0.4-0.6m.
The beneficial effects of the utility model: a kind of mash gas pumping drilling plugging device that the utility model provides, its structure is simple, easy to use, reliably, by arranging rational plugging structure, adopt polyurethane hole sealing bag, elasticity sealing of hole band, the structure that water suction endless belt cooperatively interacts, make plugging structure more reasonable, substantially increase plugging effect, effectively make use of polyurethane hole sealing bag and water suction endless belt carrys out the advantage of plugging gap, in addition, the utility model adopts pressure sensor and overfall to control tank and cooperatively interacts, effectively control the pressure of overfall pressure and slurries accurately, effectively improve the degree of accuracy of borehole sealing, decrease the appearance of mortar solidification process intermediate gap in shutoff process, further increase plugging effect.
Accompanying drawing explanation
The structural representation of a kind of mash gas pumping drilling plugging device that Fig. 1 provides for the utility model.
Wherein, 1, coal body, 2, polyurethane hole sealing bag, 3, elasticity sealing of hole band, 4, water suction endless belt, 5, Grouting Pipe, 6, return pipe, 7, grouting pump, 8, overfall controls tank, 9, pressure sensor, 10, dividing plate, 11, pressure air pump, 12, drainage tube.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the utility model provides a kind of mash gas pumping drilling plugging device, it comprises the gas pumping pipe 12 in boring, Grouting Pipe 5, return pipe 6, polyurethane hole sealing bag 2, elasticity sealing of hole band 3, water suction endless belt 4 and overfall control tank 8, the required block section of boring is close to by elasticity sealing of hole band 3, the two ends of elasticity sealing of hole band 3 are provided with polyurethane hole sealing bag 2, multiple water suction endless belt 4 is provided with in elasticity sealing of hole band 3 between two polyurethane hole sealing bags 2, Grouting Pipe 5 outer end is connected with grouting pump 7, return pipe 6 outer end is connected with overfall and controls tank 8, overfall controls to be provided with dividing plate 10 in tank 8, pressure air pump 11 is communicated with in the confined space on dividing plate 10 top of overfall control tank 8, the confined space of dividing plate 10 bottom is communicated with return pipe 6, pressure sensor 9 is provided with in the confined space of dividing plate 10 bottom of overfall control tank 8, pressure sensor 9 is connected with pressure air pump 11.
In the present embodiment, the degree of depth that return pipe 6 stretches into boring is greater than the degree of depth that Grouting Pipe 5 stretches into boring.Return pipe 6 is at least through being in the innermost water suction endless belt 4 of boring, and Grouting Pipe 5 is in outside water suction endless belt 4.Polyurethane hole sealing bag 2 is 3-4m apart from the outer end of boring.The internal diameter of drainage tube 12 is 0.4-0.6m.
In use, first, conveniently construction mash gas pumping drilling in coal body 1, elasticity sealing of hole band is placed in boring, and polyurethane hole sealing bag is set at the two ends of elasticity sealing of hole band, afterwards, Grouting Pipe and return pipe are arranged in the borehole, and overfall control tank is connected in the outer end of return pipe, afterwards by grouting pump slip casting, until there is overfall, overfall controls in tank to overfall, when just there is overfall, air pump is opened, and overfall controls in tank by pressure air-pump inflating, when overfall overpressure reaches setting pressure, pressure air pump stops inflation, until mortar is cured.In the curing process, water suction endless belt can in slip casting process, and the extruding elasticity that expands sealing of hole band, makes elasticity sealing of hole band tightening seal block mash gas pumping drilling, after complete shutoff has been solidified, by drainage tube mash gas extraction gas.
The utility model is by arranging rational plugging structure, adopt polyurethane hole sealing bag, elasticity sealing of hole band, the structure that water suction endless belt cooperatively interacts, make plugging structure more reasonable, substantially increase plugging effect, effectively make use of polyurethane hole sealing bag and water suction endless belt carrys out the advantage of plugging gap, in addition, the utility model adopts pressure sensor and overfall to control tank and cooperatively interacts, effectively control the pressure of overfall pressure and slurries accurately, effectively improve the degree of accuracy of borehole sealing, decrease the appearance of mortar solidification process intermediate gap in shutoff process, further increase plugging effect.
Claims (5)
1. a mash gas pumping drilling plugging device, it comprises the gas pumping pipe in boring, Grouting Pipe, return pipe, polyurethane hole sealing bag, elasticity sealing of hole band, water suction endless belt and overfall control tank, it is characterized in that, block section needed for described boring is close to by described elasticity sealing of hole band, the two ends of described elasticity sealing of hole band are provided with described polyurethane hole sealing bag, multiple described water suction endless belt is provided with in elasticity sealing of hole band between two described polyurethane hole sealing bags, described Grouting Pipe outer end is connected with grouting pump, described return pipe outer end is connected with overfall and controls tank, described overfall controls to be provided with dividing plate in tank, pressure air pump is communicated with in the confined space on the dividing plate top of described overfall control tank, the confined space of described the lower partition is communicated with described return pipe, pressure sensor is provided with in the confined space of the lower partition of described overfall control tank, described pressure sensor is connected with described pressure air pump.
2. a kind of mash gas pumping drilling plugging device according to claim 1, is characterized in that, the degree of depth that described return pipe stretches into described boring is greater than the degree of depth that described Grouting Pipe stretches into described boring.
3. a kind of mash gas pumping drilling plugging device according to claim 2, is characterized in that, described return pipe is at least through being in the innermost described water suction endless belt of boring, and described Grouting Pipe is in outside described water suction endless belt.
4. a kind of mash gas pumping drilling plugging device according to claim 1, is characterized in that, described polyurethane sealing of hole pocket position is 3-4m from the outer end of described boring.
5. a kind of mash gas pumping drilling plugging device according to claim 4, is characterized in that, the internal diameter of described drainage tube is 0.4-0.6m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520090548.XU CN204476353U (en) | 2015-02-06 | 2015-02-06 | A kind of mash gas pumping drilling plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520090548.XU CN204476353U (en) | 2015-02-06 | 2015-02-06 | A kind of mash gas pumping drilling plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204476353U true CN204476353U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520090548.XU Expired - Fee Related CN204476353U (en) | 2015-02-06 | 2015-02-06 | A kind of mash gas pumping drilling plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204476353U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041299A (en) * | 2015-08-13 | 2015-11-11 | 贵州大学 | Three-blocking two-segment type grouting sealing hole pressure measuring structure and construction method thereof |
| CN105114030A (en) * | 2015-08-20 | 2015-12-02 | 中国矿业大学 | Gas extraction drilling non-solidification constant-pressure slurry hole sealing method |
| CN107676055A (en) * | 2017-11-23 | 2018-02-09 | 山东科技大学 | A kind of mash gas pumping drilling method for blocking using S-shaped structural traps bayonet socket |
| CN113236346A (en) * | 2021-06-28 | 2021-08-10 | 山东科技大学 | Anti-collapse reinforced gas extraction device and use method |
-
2015
- 2015-02-06 CN CN201520090548.XU patent/CN204476353U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041299A (en) * | 2015-08-13 | 2015-11-11 | 贵州大学 | Three-blocking two-segment type grouting sealing hole pressure measuring structure and construction method thereof |
| CN105114030A (en) * | 2015-08-20 | 2015-12-02 | 中国矿业大学 | Gas extraction drilling non-solidification constant-pressure slurry hole sealing method |
| CN105114030B (en) * | 2015-08-20 | 2018-05-08 | 中国矿业大学 | A kind of non-condensable constant pressure slurries method for sealing of mash gas pumping drilling |
| CN107676055A (en) * | 2017-11-23 | 2018-02-09 | 山东科技大学 | A kind of mash gas pumping drilling method for blocking using S-shaped structural traps bayonet socket |
| CN113236346A (en) * | 2021-06-28 | 2021-08-10 | 山东科技大学 | Anti-collapse reinforced gas extraction device and use 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: 20150715 Termination date: 20160206 |