CN207033416U - A kind of coal bed methane extraction guard aperture screen casing - Google Patents
A kind of coal bed methane extraction guard aperture screen casing Download PDFInfo
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- CN207033416U CN207033416U CN201721017472.3U CN201721017472U CN207033416U CN 207033416 U CN207033416 U CN 207033416U CN 201721017472 U CN201721017472 U CN 201721017472U CN 207033416 U CN207033416 U CN 207033416U
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- coal bed
- screen casing
- guard aperture
- bed methane
- aperture screen
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Abstract
The utility model belongs to coal bed methane extraction accessory technical field, discloses a kind of coal bed methane extraction guard aperture screen casing.Its main technical schemes includes：End set has the fastener that can be fixed with the coal mine borehole wall, the socket being inserted in coal bed drilling, above-mentioned socket is made up of rigid plastics socket and the net cylinder being attached thereto, and at least two rings are provided with the net cylinder, filter screen mechanism is provided with the ring.The device can overcome slag particle to extract the generation for causing pipeline blocking and effectively preventing the phenomenon of caving in inside the hole of coal seam out, effectively increase the pump drainage efficiency of coal mine gas.
Description
Technical field
The utility model belongs to coal bed methane extraction accessory technical field, is concretely related to a kind of coal bed methane extraction and uses
Guard aperture screen casing.
Background technology
Coal mine gas extraction pipeline by be placed in the hole of coal seam PVC hole sealing tubes, be provided with the blast pipes of some threeways
Connecting tube and air draft mechanism between line, the threeway being connected in exhaust line and PVC hole sealing tubes are formed.I.e. in above-mentioned gas
In evacuation system, the exhaust line for being provided with air draft mechanism is directly connected by connecting tube with PVC hole sealing tubes, and the structure is in gas
Problems with during pump drainage be present：First, the unnecessary slag particle in coal seam hole can be extracted out in drawing-off gas, cause the stifled of pipeline
Plug；Second, can cause the negative pressure to tens of rice to the coal seam hole of up to a hundred meters of depths uneven during exhausting, and cause collapsing inside the hole of coal seam
Collapse, and influence emission effect.The practicality that China Patent No. is 201620495353.8, Authorization Notice No. is CN205638390U is new
Type patent discloses a kind of coal bed methane extraction guard aperture screen casing, form the structure of the coal bed methane extraction guard aperture screen casing by with
It is in fastener that the coal mine borehole wall is fixed, the PVC hole sealing tubes that can be inserted in coal bed drilling, be provided with gas on tube wall and take out hole
Rigid plastics socket form.But the guard aperture screen casing of the structure is in use, although rigid plastics socket will not be by slag particle
Blocked, but the extraction of these slag particles can cause blocking that hole is taken out on pipeline and plastic tube tube tube wall, have a strong impact on its use
Life-span.
Utility model content
The purpose of this utility model is just to provide a kind of colliery extraction watt that slag particle extraction can be overcome to cause pipeline to block
This uses guard aperture screen casing.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of coal bed methane extraction guard aperture screen casing, its structure include
End set has the fastener that can be fixed with the coal mine borehole wall, the socket being inserted in coal bed drilling, and its feature exists
In：Described socket is made up of rigid plastics socket and the net cylinder being attached thereto, and at least two are provided with the net cylinder
Hoop, is provided with filter screen mechanism on the ring.
In structure of the above-mentioned coal bed methane extraction with guard aperture screen casing is formed：
--- form and be provided with axial connecting plate between the ring of the net cylinder；
--- the bottom of the ring is provided with particulate matter leakage empty hole；
--- the end of the ring is cone-shaped sealing structure.
Coal bed methane extraction provided by the utility model guard aperture screen casing, there is advantages below：First, should due to forming
Guard aperture screen casing is made up of the rigid plastics socket being inserted in coal bed drilling and the net cylinder being attached thereto, therefore is greatly reduced with shield
The resistance of hole sizer pipe, the power of air exhauster can be reduced；Second, due to being provided with least two rings in net cylinder, in the cylinder
The slag particle in coal seam hole can enter pipeline when filter screen mechanism is provided with hoop, therefore can substantially reduce drawing-off gas so that slag particle
It is blocked in net cylinder, effectively prevents slag particle from causing the generation of pipeline clogging；Third, due to forming guard aperture screen casing ring
Bottom is provided with particulate matter small opening, therefore after particulate matter reaches to a certain degree, can be discharged under gravity by small opening,
It ensure that drawing out methane for guard aperture screen casing is unimpeded.
Brief description of the drawings
Fig. 1 is the structural representation of coal bed methane extraction guard aperture screen casing provided by the utility model.
Embodiment
Coal bed methane extraction provided by the utility model is made further in detail of the structure of guard aperture screen casing below in conjunction with the accompanying drawings
Describe in detail bright.
It is the structural representation of coal bed methane extraction guard aperture screen casing provided by the utility model as shown in Figure 1.Forming should
The structure of guard aperture screen casing, which includes end set, to be had the fastener 2 that can be fixed with the coal mine borehole wall 1, is inserted in coal bed drilling 14
Socket, and the socket is made up of rigid plastics socket 4 and the net cylinder 5 that is attached thereto, and before being provided with the net cylinder, in and hold
Portion's totally three rings 6,7 and 8, the filter screen 9 of filtering slag particle is provided with above-mentioned ring；Form the rigid plastics socket 4 of socket
The PVC hole sealing tubes 11 being then inserted in coal bed drilling 14 are easy to fix with fixture 2, and are provided with energy on rigid plastics socket 4
Enough pipe sleeve mechanisms 13 being connected with connecting tube 12, connecting tube are connected by threeway and air draft mechanism with exhaust line 15.
Its operation principle is：Air draft mechanism passes through the rigid plastics socket 4 and net in connected PVC hole sealing tubes 11
The guard aperture screen casing that cylinder 5 is formed, gas exhaust is gone out.
In structure of the above-mentioned coal bed methane extraction with guard aperture screen casing is formed：
--- in order to further improve reinforcing network barrel structure, axial connecting plate is provided between the ring of above-mentioned net cylinder is formed
3, three pipe collars is formed integrative-structure；
--- in the bottom of ring（When being horizontally disposed with due to guard aperture screen casing）It is provided with particulate matter small opening 10 so that by filter screen
9 slag particles filtered are spilt；When above-mentioned guard aperture screen casing is oblique or is vertically arranged, then the filter screen 9 formed is also in angularly disposed, is easy to
Slag particle is spilt.
--- for the ease of the insertion of guard aperture screen casing, its end pipe collar 8 is arranged to cone-shaped sealing structure.
Claims (4)
1. a kind of coal bed methane extraction guard aperture screen casing, its structure include
End set has the fastener that can be fixed with the coal mine borehole wall, the socket being inserted in coal bed drilling, it is characterised in that：Institute
The socket stated is made up of rigid plastics socket and the net cylinder being attached thereto, and at least two rings are provided with the net cylinder,
Filter screen mechanism is provided with the ring.
A kind of 2. coal bed methane extraction guard aperture screen casing according to claim 1, it is characterised in that：Form the net cylinder
Axial connecting plate is provided between ring.
A kind of 3. coal bed methane extraction guard aperture screen casing according to claim 1, it is characterised in that：The bottom of the ring
It is provided with particulate matter leakage empty hole.
A kind of 4. coal bed methane extraction guard aperture screen casing according to claim 1, it is characterised in that：The end of the ring
For cone-shaped sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721017472.3U CN207033416U (en) | 2017-08-15 | 2017-08-15 | A kind of coal bed methane extraction guard aperture screen casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721017472.3U CN207033416U (en) | 2017-08-15 | 2017-08-15 | A kind of coal bed methane extraction guard aperture screen casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207033416U true CN207033416U (en) | 2018-02-23 |
Family
ID=61487797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721017472.3U Active CN207033416U (en) | 2017-08-15 | 2017-08-15 | A kind of coal bed methane extraction guard aperture screen casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207033416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209300A (en) * | 2018-09-14 | 2019-01-15 | 辽宁工程技术大学 | A kind of anti-collapse hole method for sealing of complete opening depth sieve pipe of deep fractures drilling |
-
2017
- 2017-08-15 CN CN201721017472.3U patent/CN207033416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209300A (en) * | 2018-09-14 | 2019-01-15 | 辽宁工程技术大学 | A kind of anti-collapse hole method for sealing of complete opening depth sieve pipe of deep fractures drilling |
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