CN205260004U - Drainage device drills down - Google Patents
Drainage device drills down Download PDFInfo
- Publication number
- CN205260004U CN205260004U CN201521114804.0U CN201521114804U CN205260004U CN 205260004 U CN205260004 U CN 205260004U CN 201521114804 U CN201521114804 U CN 201521114804U CN 205260004 U CN205260004 U CN 205260004U
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- extraction
- adopt
- take out
- drainage
- pipe
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Abstract
The utility model discloses a drainage device drills down, it is simple, take out public one of the system of adopting, gas supply system and drainage system promptly and take out and adopt tub (2), take out and adopt tub (2) and adopt real pipe (2 -2) and take out and adopt screen pipe (2 -3) including taking out, be provided with branch parting bead (2 -1) between the two, take out through the valve control of difference and adopt tub (2) and realize gas drainage and drainage function. The utility model provides an adoption wet -type punch and when having crevice water, have ponding in leading to the fact drilling, influence the problem of gas drainage effect, adopt real pipe to take out simultaneously and adopt the problem that the area is less and adopt the screen pipe easily to block up, further improved to take out and adopted the effect.
Description
Technical field
The utility model relates under one to boring drainage arrangement, is applicable to the mash gas pumping drilling field of easy collapse hole.
Background technology
In process of coal mining, projecting coal bed for complicated geology, need to arrange that descending hole carries out gas pumping, owing to adopting wet type punching and having crevice water etc., causes in boring and has ponding, affects gas pumping effect; Meanwhile, gas pumping pipe is as adopted real pipe, and extraction area is less, and as adopted screen casing, because ponding is invaded bubble, the wall of a borehole is soft to be caving, and the screen casing at the bottom of hole is goed deep in obstruction, causes extracting result poor.
Summary of the invention
The technical problems to be solved in the utility model: a kind of descending extraction borehole drainage arrangement is provided, when adopting wet type punching and have the situations such as crevice water solving, has ponding in the boring causing, affect the problem of gas pumping effect; Meanwhile, overcome and adopt real pipe extraction extraction area less and adopt screen casing susceptible to plugging problem, further improve extracting result.
The technical solution of the utility model is: a kind of descending boring drainage arrangement, extraction system, air supply system and drainage system share a drainage tube. Three systems share a drainage tube and have the following advantages, and are first easy for installation, and in each mounting pipe subprocess, only a pipe need to be installed just can realize draining and air supply system; Simultaneously, can ensure again gas extraction flow, in one timing of extraction negative pressure, extraction caliber is larger, gas extraction flow will be larger, and this is to adopt effect that many pipelines are beyond one's reach (many pipelines insert boring simultaneously and must consider mutual installation impact).
Drainage tube comprises the extraction screen casing of the real pipe of superposed extraction and bottom, is provided with divider between the two. Drainage tube is divided into the real pipe of extraction and extraction screen casing by the divider of drainage tube inside, and wherein the real pipe of extraction is positioned at top, and extraction screen casing is positioned at bottom. The upper and lower is here for the use state of drainage tube, even the used time, vertically, the extraction screen section in drainage tube is positioned at the below of the real tube portion of extraction.
The cross sectional shape of drainage tube is preferentially chosen as circle, other shapes also can, but when the real pipe that will ensure top can effectively prevent from holing collapse hole, can not block the aperture on screen casing surface.
The real pipe range of extraction is in extraction screen casing, i.e. the end of the real pipe of extraction will exceed end one segment distance of extraction screen casing. The brim of a hat that this its effect of part growing is similar to cap, can effectively block the stone dropping from boring, prevents that it from stopping up the terminal surface opening of extraction screen casing, also can effectively prevent that the opening of the real pipe terminal surface of extraction is blocked.
Extraction screen casing surface is covered with irregular holes, and the distribution of irregular holes and quantity, to ensure that the gas in boring enters in drainage tube fast as principle is determined.
Described extraction system is made up of drainage tube and extraction valve, and drainage tube is connected with extraction negative pressure line.
Described air supply system is made up of air supply pipe, air-supplying valve, drainage tube, and air supply pipe is connected with high-pressure gas pipeline.
Described drainage system is made up of drainpipe, water discharging valve, drainage tube.
The utility model in use, is opened the extraction valve on drainage tube, closes the water discharging valve on air-supplying valve and the drainpipe on air supply pipe, under suction function, can realize the normal extraction of gas; Close the extraction valve on drainage tube, open the air-supplying valve on water discharging valve and the air supply pipe on drainpipe, introduce gases at high pressure, the ponding in boring is discharged outside boring by drainpipe; The utility model device is simple, uses reliably, and convenient and quick construction, has solved the punching of employing wet type and had crevice water etc., causes in boring and has ponding, affects gas pumping effect; Meanwhile, gas pumping pipe is as adopted real pipe, and extraction area is less, and as adopted screen casing, because ponding is invaded bubble, the wall of a borehole is soft to be caving, and stops up the screen casing going deep at the bottom of hole, causes the problems such as extracting result is poor.
Brief description of the drawings
The schematic side view of Fig. 1 the utility model device;
The A-A generalized section of Fig. 2 the utility model device.
Detailed description of the invention
As illustrated in fig. 1 and 2, a kind of descending boring drainage arrangement, comprises extraction system, air supply system, drainage system, and three shares a drainage tube 2.
Extraction system is made up of drainage tube 2 and extraction valve 5, and drainage tube 2 is connected with extraction negative pressure line.
Drainage system is made up of drainpipe 3, water discharging valve 6, drainage tube 2.
Air supply system is made up of air supply pipe 4, air-supplying valve 7, drainage tube 2, and gas manifold 4 is connected with high-pressure gas pipeline.
There is divider 2-1 drainage tube 2 inside, and drainage tube 2 is divided into extraction real pipe 2-2 and extraction screen casing 2-3 by it, and wherein the real pipe of extraction 2-2 is positioned at top, and extraction screen casing 2-3 is positioned at bottom.
The real pipe of extraction 2-2 end is longer than extraction screen casing 2-3.
Extraction screen casing 2-3 surface is covered with irregular holes.
Open the extraction valve 5 on drainage tube 2, close the water discharging valve 6 on air-supplying valve 7 and the drainpipe 3 on air supply pipe 4, under suction function, can realize the normal extraction of gas; Close the extraction valve 5 on drainage tube 2, open the air-supplying valve 7 on water discharging valve 6 and the air supply pipe 4 on drainpipe 3, gases at high pressure enter in boring 1 by extraction screen casing 2-3, and the ponding of boring 1 bottom is discharged outside boring 1 by the real pipe of extraction 2-2.
Claims (3)
1. a descending boring drainage arrangement, it is characterized in that: comprise the drainage tube (2) being connected with extraction system, air supply system and drainage system simultaneously, the extraction screen casing (2-3) that drainage tube (2) comprises the real pipe of superposed extraction (2-2) and bottom, is provided with divider (2-1) between the two.
2. the descending boring drainage arrangement of one according to claim 1, is characterized in that: the real pipe of extraction (2-2) is longer than extraction screen casing (2-3).
3. the descending boring drainage arrangement of one according to claim 1, is characterized in that: extraction screen casing (2-3) surface is covered with irregular holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521114804.0U CN205260004U (en) | 2015-12-30 | 2015-12-30 | Drainage device drills down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521114804.0U CN205260004U (en) | 2015-12-30 | 2015-12-30 | Drainage device drills down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205260004U true CN205260004U (en) | 2016-05-25 |
Family
ID=56001536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521114804.0U Active CN205260004U (en) | 2015-12-30 | 2015-12-30 | Drainage device drills down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205260004U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685740A (en) * | 2019-09-26 | 2020-01-14 | 天地科技股份有限公司 | Method for preventing water damage of shallow-buried deep-thick coal seam mining burned rock |
-
2015
- 2015-12-30 CN CN201521114804.0U patent/CN205260004U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685740A (en) * | 2019-09-26 | 2020-01-14 | 天地科技股份有限公司 | Method for preventing water damage of shallow-buried deep-thick coal seam mining burned rock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |