CN214887203U - Gas drainage pipe positioning mechanism - Google Patents
Gas drainage pipe positioning mechanism Download PDFInfo
- Publication number
- CN214887203U CN214887203U CN202120539835.XU CN202120539835U CN214887203U CN 214887203 U CN214887203 U CN 214887203U CN 202120539835 U CN202120539835 U CN 202120539835U CN 214887203 U CN214887203 U CN 214887203U
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- Prior art keywords
- positioning
- extraction pipe
- gas extraction
- sleeve base
- gas
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- Expired - Fee Related
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- 238000000605 extraction Methods 0.000 claims abstract description 71
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003245 coal Substances 0.000 description 9
- 238000005086 pumping Methods 0.000 description 7
- 238000005553 drilling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a gas extraction pipe positioning mechanism, which comprises a sleeve base, a positioning support rod and a support tension spring; the sleeve base is provided with a gas extraction pipe positioning and mounting structure and is positioned, sleeved and mounted on the gas extraction pipe through the gas extraction pipe positioning and mounting structure; a plurality of positioning support rods are uniformly distributed along the circumferential direction of the sleeve base to form a positioning support rod group, the bottom ends of the positioning support rods are hinged and installed on the outer wall of the sleeve base, and the positioning support rods can swing along the front-back direction; the support extension springs are arranged corresponding to the positioning support rods, one ends of the support extension springs are connected with the rod bodies of the positioning support rods, and the other ends of the support extension springs are connected with the outer wall of the sleeve base. The gas extraction pipe positioning mechanism is simple in structure and convenient to operate, and can effectively solve the problem that a gas extraction pipe placed in a gas drainage drill hole excessively deviates from the center of the gas drainage drill hole, so that subsequent gas drainage drill hole opening sealing operation and sealing effect are facilitated, and the sealing effect is guaranteed.
Description
Technical Field
The utility model relates to a pipe end positioning mechanism specifically is a gas drainage pipe positioning mechanism suitable for advance line location in gas drainage drilling to gas drainage pipe, belongs to mine gas drainage technical field.
Background
According to recent statistical data, among various coal mine accidents, coal mine accidents caused by gas explosion account for about 47% of the total number of coal mine accidents. In order to ensure safe production, the most common measure in coal mine production at present is gas drainage, that is, negative pressure caused by mechanical equipment and special pipelines is utilized to extract gas existing or released in a coal seam and convey the gas to the ground or other safe places. The gas drainage is a permanent measure for eliminating major gas accidents of coal mines, can reduce the ventilation cost of mines and utilizes gas resources.
In the gas drainage for exploiting the coal seam, a gas drainage borehole is usually drilled in the coal seam, a gas extraction pipe is inserted into the gas drainage borehole, the periphery of an orifice of the gas drainage borehole is sealed, and the gas separated out from the coal seam can be extracted after the rear end of the gas extraction pipe is connected with a special pipeline and negative pressure equipment. The sealing effect of sealing the periphery of the orifice of the gas drainage drill hole directly determines the concentration of gas in the gas extraction process. Data show that poor sealing effect caused by the fact that the axis position of a gas extraction pipe placed in a gas drainage drill hole deviates from the center of the gas drainage drill hole excessively is one of the main reasons for causing the hole sealing effect to be unsatisfactory.
Disclosure of Invention
Problem to above-mentioned prior art exists, the utility model provides a gas drainage pipe positioning mechanism, simple structure, convenient operation can effectively solve the problem of putting into the excessive skew gas drainage drilling center of gas drainage pipe in the gas drainage drilling, and then subsequent gas drainage drilling drill way of being convenient for seal the operation, guarantee sealed effect.
In order to achieve the purpose, the gas extraction pipe positioning mechanism comprises a sleeve base, a positioning support rod and a support tension spring;
the sleeve base is of a sleeve structure, the size of an inner hole of the sleeve structure is matched with the size of the outer diameter of the gas extraction pipe, a gas extraction pipe positioning and mounting structure is arranged on the sleeve base, and the sleeve base is positioned, sleeved and mounted on the gas extraction pipe through the gas extraction pipe positioning and mounting structure;
the positioning support rods are at least arranged into three pieces, a plurality of positioning support rods are uniformly distributed along the circumferential direction of the sleeve base to form a positioning support rod group, the bottom ends of the positioning support rods are hinged and installed on the outer wall of the sleeve base, and the positioning support rods can swing along the front-back direction;
the support extension spring correspond the quantity setting of location bracing piece, the one end of support extension spring and the body of rod connection of location bracing piece, the other end and the outer wall connection of sleeve base, support the extension spring when the initial condition of not tensile, the contained angle between the outer wall of location bracing piece and sleeve base is the acute angle, and the top of location bracing piece is located the bottom the place ahead of location bracing piece.
As a further improvement of the utility model, the top end of the positioning support rod is provided with a conical positioning structure.
As a further improvement of the utility model, a cutting edge is arranged on the conical positioning structure.
As a further improvement of the utility model, the axial direction interval along the sleeve base of location bracing piece group sets up to the multiunit.
As a further improvement of the utility model, the space interval dislocation set is between the positioning support rods of multiunit positioning support rod group.
Compared with the prior art, when the gas extraction pipe positioning mechanism is used for positioning a gas extraction pipe, the sleeve base is positioned and sleeved on the gas extraction pipe through the gas extraction pipe positioning and mounting structure, then all the positioning support rods are shifted backwards to enable all the positioning support rods to turn backwards along the bottom end hinged centers, the support tension springs are stretched in the process of shifting the positioning support rods, when the included angle between the positioning support rods and the outer wall of the sleeve base is an obtuse angle, and the outer contour dimension of a positioning support rod group consisting of the top ends of the positioning support rods is smaller than the inner diameter dimension of a gas drainage drill hole, the gas extraction pipe and the gas extraction pipe positioning mechanism can be sent forwards into the gas drainage drill hole together; the gas extraction pipe positioning mechanism is used for supporting and clinging the top ends of all the positioning support rods to the inner wall of a gas drainage drill hole under the action of the reset elasticity of the support tension springs in the forward moving process of a gas extraction pipe in the gas drainage drill hole, so that the axis of the gas extraction pipe is basically kept concentric with the center of the gas drainage drill hole, after the gas extraction pipe is moved forward to a set position, the gas extraction pipe is shaken, the top ends of all the positioning support rods can be clamped on the inner wall of the gas drainage drill hole, the gas extraction pipe is supported and positioned in a state that the axis of the gas extraction pipe is basically kept concentric with the center of the gas drainage drill hole, the periphery of an orifice of the gas drainage drill hole behind the gas extraction pipe positioning mechanism is sealed, the structure is simple, the operation is convenient, and the problem that the gas extraction pipe placed in the gas drainage drill hole excessively deviates from the center of the gas drainage drill hole can be effectively solved, thereby being convenient for the subsequent gas drainage drilling orifice sealing operation and ensuring the sealing effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the gas extraction pipe installed in the gas drainage borehole.
In the figure: 1. the gas extraction pipe comprises a sleeve base, 2, a positioning support rod, 21, a conical positioning structure, 3, a support tension spring, 4 and a gas extraction pipe.
Detailed Description
The present invention will be further explained with reference to the drawings (the direction in which the gas extraction pipe 4 is inserted into the gas drainage borehole is described as the front).
As shown in fig. 1, the gas extraction pipe positioning mechanism comprises a sleeve base 1, a positioning support rod 2 and a support tension spring 3.
The sleeve base 1 is a rigid sleeve structure, the inner hole size of the sleeve structure is matched with the outer diameter size of the gas extraction pipe 4, the sleeve base 1 is provided with a gas extraction pipe positioning and mounting structure, the gas extraction pipe positioning and mounting structure can be a positioning and mounting screw hole arranged along the radial direction of the sleeve base 1 and a positioning and mounting screw structure screwed on the positioning and mounting screw hole in a matching manner, the gas extraction pipe positioning and mounting structure can also be an interference fit structure of the inner hole size of the sleeve base 1 and the outer diameter size of the gas extraction pipe 4, and the sleeve base 1 can be positioned, sleeved and mounted on the gas extraction pipe 4 through the gas extraction pipe positioning and mounting structure.
The utility model discloses a sleeve base, including sleeve base 1, location bracing piece 2, many location bracing pieces 2 set up to three at least, many location bracing pieces 2 set up along the circumference direction equipartition of sleeve base 1 and are location bracing piece group, the bottom of location bracing piece 2 is articulated to be installed on the outer wall of sleeve base 1, and location bracing piece 2 can follow the fore-and-aft direction swing.
Support 3 quantity settings that correspond location bracing piece 2 of extension spring, the one end of support extension spring 3 and the body of rod connection of location bracing piece 2, the other end and the outer wall connection of sleeve base 1, support extension spring 3 when the initial condition of not stretching, contained angle between the outer wall of location bracing piece 2 and sleeve base 1 is the acute angle, and the top of location bracing piece 2 is located the bottom the place ahead of location bracing piece 2.
When the gas extraction pipe positioning mechanism is used for positioning a gas extraction pipe 4, the sleeve base 1 is positioned, sleeved and mounted on the gas extraction pipe 4 through the gas extraction pipe positioning and mounting structure, then all the positioning support rods 2 are shifted backwards to enable all the positioning support rods 2 to turn backwards along the bottom end hinged centers, the support tension springs 3 are stretched in the process of shifting the positioning support rods 2, and when an included angle between each positioning support rod 2 and the outer wall of the sleeve base 1 is an obtuse angle and the outer contour dimension of a positioning support rod group consisting of the top ends of the positioning support rods 2 is smaller than the inner diameter dimension of a gas drainage drill hole, the gas extraction pipe 4 and the gas extraction pipe positioning mechanism can be sent forwards into the gas drainage drill hole together as shown in fig. 2; in the process that the gas extraction pipe positioning mechanism follows the gas extraction pipe 4 to move forwards in the gas extraction drill hole, under the action of the reset elastic force of the support tension spring 3, the top ends of all the positioning support rods 2 are supported and attached to the inner wall of the gas extraction drill hole, so that the axis of the gas extraction pipe 4 is basically kept concentric with the center of the gas extraction drill hole, after the gas extraction pipe 4 moves forwards to a set position, the top ends of all the positioning support rods 2 can be clamped on the inner wall of the gas extraction drill hole only by shaking the gas extraction pipe 4, the gas extraction pipe 4 is supported and positioned, the axis of the gas extraction pipe 4 is basically kept concentric with the center of the gas extraction drill hole, and the periphery of the orifice of the gas extraction drill hole behind the gas extraction pipe positioning mechanism is sealed.
In order to realize the firm joint location of position support pole 2 and gas drainage drilling inner wall, and be convenient for accomplish recycle behind the gas drainage, as the utility model discloses a further improvement scheme, position support pole 2's top is equipped with toper location structure 21, and is equipped with the cutting edge that can break rock on the toper location structure 21. After gas pumping and drainage are finished, the gas pumping and drainage pipe 4 is pulled backwards to recover the gas pumping and drainage pipe 4, the cutting edge on the conical positioning structure 21 of the positioning support rod 2 can damage the inner wall of the gas pumping and drainage drill hole, and the whole gas pumping and drainage pipe positioning mechanism can move backwards along with the gas pumping and drainage pipe 4 to exit the gas pumping and drainage drill hole.
In sending into the gas with gas drainage pipe 4 and this gas drainage pipe positioning mechanism together forward and take out the in-process in the gang drill hole, in order to realize better support guide effect, as the utility model discloses a further improvement scheme, the axial direction interval along sleeve base 1 is organized to the location bracing piece sets up to the multiunit, and in order to avoid the motion to interfere, space interval dislocation set between the location bracing piece 2 of multiunit location bracing piece group.
Claims (5)
1. A gas extraction pipe positioning mechanism is characterized by comprising a sleeve base (1), a positioning support rod (2) and a support tension spring (3);
the sleeve base (1) is of a sleeve structure, the size of an inner hole of the sleeve structure is matched with the size of the outer diameter of the gas extraction pipe (4), the sleeve base (1) is provided with a gas extraction pipe positioning and mounting structure, and the sleeve base (1) is positioned, sleeved and mounted on the gas extraction pipe (4) through the gas extraction pipe positioning and mounting structure;
the positioning support rods (2) are at least arranged into three pieces, a plurality of positioning support rods (2) are uniformly distributed along the circumferential direction of the sleeve base (1) to form a positioning support rod group, the bottom ends of the positioning support rods (2) are hinged to the outer wall of the sleeve base (1), and the positioning support rods (2) can swing along the front-back direction;
support extension spring (3) and correspond the quantity setting of location bracing piece (2), the one end of support extension spring (3) and the body of rod connection of location bracing piece (2), the other end and the outer wall connection of sleeve base (1), support extension spring (3) when the initial condition of not tensile, contained angle between the outer wall of location bracing piece (2) and sleeve base (1) is the acute angle, and the top of location bracing piece (2) is located the bottom the place ahead of location bracing piece (2).
2. The gas extraction pipe positioning mechanism according to claim 1, wherein a conical positioning structure (21) is arranged at the top end of the positioning support rod (2).
3. The gas extraction pipe positioning mechanism according to claim 2, wherein a cutting edge is arranged on the conical positioning structure (21).
4. The gas extraction pipe positioning mechanism according to claim 1, wherein the positioning support rod groups are arranged in multiple groups at intervals along the axial direction of the sleeve base (1).
5. The gas extraction pipe positioning mechanism according to claim 4, wherein the positioning support rods (2) of the multiple positioning support rod groups are arranged in a staggered manner at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120539835.XU CN214887203U (en) | 2021-03-16 | 2021-03-16 | Gas drainage pipe positioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120539835.XU CN214887203U (en) | 2021-03-16 | 2021-03-16 | Gas drainage pipe positioning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214887203U true CN214887203U (en) | 2021-11-26 |
Family
ID=79036902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120539835.XU Expired - Fee Related CN214887203U (en) | 2021-03-16 | 2021-03-16 | Gas drainage pipe positioning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214887203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263449A (en) * | 2021-12-14 | 2022-04-01 | 中国矿业大学 | High-efficient gas drainage device based on hydraulic fracturing |
-
2021
- 2021-03-16 CN CN202120539835.XU patent/CN214887203U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263449A (en) * | 2021-12-14 | 2022-04-01 | 中国矿业大学 | High-efficient gas drainage device based on hydraulic fracturing |
| CN114263449B (en) * | 2021-12-14 | 2022-09-16 | 中国矿业大学 | High-efficient gas drainage device based on hydraulic fracturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20211126 |