CN216077214U - Down gas drainage drilling forced air drainage device - Google Patents
Down gas drainage drilling forced air drainage device Download PDFInfo
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- CN216077214U CN216077214U CN202122458956.4U CN202122458956U CN216077214U CN 216077214 U CN216077214 U CN 216077214U CN 202122458956 U CN202122458956 U CN 202122458956U CN 216077214 U CN216077214 U CN 216077214U
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Abstract
The utility model belongs to the technical field of coal seam gas extraction drilling, and particularly relates to a down gas extraction drilling compressed air drainage device which comprises a support, wherein a compressed air drainage box is arranged on the support, the compressed air drainage box is provided with a box cover matched with the compressed air drainage box, the side wall of the compressed air drainage box is provided with a pressure air inlet and an air outlet, the pressure air inlet is used for accommodating a pressure air pipe to pass through, a connecting piece is arranged on the air outlet, a closed coiled pipe is arranged between the connecting piece and an extraction drilling hole, the pressure air pipe is sequentially connected with a reducer pipe, a connecting pipe, a bent pipe and a guide branch pipe, and the guide branch pipe sequentially passes through the air outlet and the closed coiled pipe and then penetrates into the extraction drilling hole; the top of the box cover is communicated with an extraction pipeline, and the bottom of the compressed air drainage box is connected with a water outlet pipe. Compared with the prior art, the utility model has the following advantages: through rationally setting up each part device in the forced air drainage box, make the interior exhaust aqueous vapor mixture of drilling separate in the forced air drainage box, avoided the risk of gas transfinite, make things convenient for the discharge of ponding in the drilling, improved the drilling and taken out the volume of taking out.
Description
Technical Field
The utility model belongs to the technical field of coal seam gas extraction drilling, and particularly relates to a down gas extraction drilling air compression and drainage device.
Background
In the process of coal mining, for a protruding coal seam with a complex geological structure, a downward hole needs to be arranged for gas extraction, in the process of gas extraction, due to the adoption of wet drilling, the high water content of the coal seam and other factors, accumulated water is easily formed in a drill hole, the overflowing area of an extraction pipeline is reduced or even blocked due to the accumulated water in the drill hole, the extraction flow is reduced, the extraction resistance is increased, the extraction effect is further deteriorated, and the normal operation of an extraction device is seriously influenced; in order to solve the problem, the prior art adopts the method that accumulated water is pressed into a borehole and discharged from a hole, but gas in the borehole overflows during drainage, so that the abnormal condition of the gas in the environment at the leeward side of the borehole can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to seal the drainage and exhaust processes in a drill hole in a closed space by using the compressed air drainage device, provides the compressed air drainage device for the downlink gas extraction drill hole, and effectively solves the risk of gas overrun.
The utility model is realized by the following technical scheme: a down gas extraction drill hole compressed air drainage device is located on the outer side of an extraction drill hole and comprises a support, wherein a compressed air drainage box is arranged on the support, a box cover matched with the compressed air drainage box is arranged on the compressed air drainage box, a penetrating compressed air inlet is formed in one side wall of the compressed air drainage box, an air outlet is formed in the side wall opposite to the side wall of the compressed air inlet, the compressed air inlet is used for allowing a compressed air pipe to penetrate through, a connecting piece is arranged on the air outlet, a closed coiled pipe is arranged between the connecting piece and the extraction drill hole, the compressed air pipe is sequentially connected with a reducer pipe, a connecting pipe, a bent pipe and a guide branch pipe, and the guide branch pipe sequentially penetrates through the air outlet and the closed coiled pipe and then penetrates into the extraction drill hole; the top of the box cover is communicated with the extraction pipeline through a conveying pipeline, and the bottom of the compressed air drainage box is connected with a water outlet pipe.
Specifically, press wind drainage box lateral wall top to be equipped with the recess, in the recess was gone into to the case lid card in time, opened the case lid and conveniently pressed the connection or the maintenance between the inside different accessories of wind drainage box or a plurality of bodys.
Specifically, the conveying pipeline is provided with an adjusting valve, the bottom of the conveying pipeline is connected with a convex clamping pipe, the convex clamping pipe is clamped at the opening of the box cover, and the bottom of the convex clamping pipe is provided with a filter screen, so that coal cinder and water can be effectively blocked; the filter screen is the toper filter screen, avoids influencing the gas air current after blockking up by the cinder and passes through, makes things convenient for water on the filter screen to assemble the back drippage simultaneously, and toper filter screen upper end is equipped with external screw thread, improves connection stability, and the toper filter screen connects soon in protruding type card socle portion.
Specifically, advance to press the air port to go up the card and establish rubber seal rand, advance the tuber pipe card and locate rubber seal rand in, in order to guarantee to press the gas tightness of wind drainage box, and make drainage, exhaust process seal in airtight space, effectively solve the gas transfinite.
Specifically, the reducing pipe both ends are connected into pressure tuber pipe and connecting pipe respectively, advance and press the tuber pipe diameter to be greater than the connecting pipe diameter, can further increase the wind pressure in connecting pipe and the direction tributary pipe through the reducing, increase the range of pressure wind in drilling, increase the displacement in the drilling.
Specifically, the connecting piece is an elastic clamping piece, so that the closed coiled pipe is hermetically connected with the interior of the compressed air drainage box; the other end of the closed coiled pipe is provided with a sealing retainer ring, the sealing retainer ring is adjusted according to the shape of the extraction drill hole, and the mixture of the guided gas and water enters the compressed air drainage box and then is separated by the closed coiled pipe, so that blockage caused by untimely separation in a small space is avoided.
Specifically, the lower end of the compressed air drainage box is provided with an obliquely arranged filtering sieve plate, the side wall of the compressed air drainage box corresponding to the lower end of the filtering sieve plate is provided with a discharge port convenient to open and close, the filtering sieve plate can effectively filter coal cinder in the mixture, and the obliquely arranged filtering sieve plate can prevent the filtering sieve plate from being blocked; the upper surface of the filtering sieve plate is provided with a filtering surface which is convenient to replace, and the cleaning steps of the filtering sieve plate are reduced.
Specifically, the water outlet pipe is provided with a water outlet valve, and the waste water collection can be completed by adjusting the water outlet valve according to actual needs.
Compared with the prior art, the utility model has the following advantages: the device comprises a pressure air drainage box, a drilling hole, a gas-water separation box and a gas-water separation box, wherein the pressure air drainage box is arranged in the drilling hole; the reasonable arrangement of the pressure inlet air pipe, the reducer pipe and the guide branch pipe can increase the range of pressure air in the drill hole, facilitate the discharge of accumulated water in the drill hole and improve the extraction amount of the drill hole; the reasonable arrangement of the closed coiled pipe is convenient to install and use, and the connection and the tightness of the drilling hole and the compressed air drainage box are ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the attachment of the filter screen.
Fig. 3 is a schematic view of the connection of the closed serpentine tubes.
The device comprises a compressed air drainage box 1, a groove 11, a support 12, a box cover 13, a box cover 14, a discharge port 15, a rubber sealing collar 15, a connecting piece 16, a water outlet pipe 17, a water outlet valve 171, a water outlet valve 2, a filtering sieve plate 21, a water filtering surface 3, a compressed air pipe 31, a reducer pipe 32, a connecting pipe 4, a convex clamping pipe 41, a filtering net 42, a regulating valve 43, an external thread 43, a pumping pipeline 5, a conveying pipeline 51, a guide branch pipe 6, a bent pipe 61, a closed coil pipe 62, a sealing collar 621, a coal wall 7 and a drill hole 71.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-3, a down gas extraction borehole compressed air drainage device is located outside a coal wall 7, an extraction borehole 71 is a down borehole and comprises a support 12, a compressed air drainage box 1 is arranged on the support 12, the compressed air drainage box 1 is provided with a box cover 13 matched with the compressed air drainage box 1, a groove 11 is formed in the top end of the side wall of the compressed air drainage box 1, the box cover 13 is just clamped in the groove 11, and the box cover 13 is opened to facilitate connection or maintenance of different accessories or a plurality of pipe bodies in the compressed air drainage box 1;
a penetrating pressure air inlet is formed in one side wall of the compressed air drainage box 1, a pressure air inlet pipe 3 penetrates through the pressure air inlet, a rubber sealing clamping ring 15 is clamped on the pressure air inlet, and the pressure air pipe 3 is clamped in the rubber sealing clamping ring 15, so that the problem of gas over-limit is effectively solved in order to ensure the air tightness of the compressed air drainage box 1 and seal the drainage and exhaust processes in a closed space;
the side wall opposite to the side wall provided with the pressure air inlet is provided with an air outlet, the air outlet is provided with a connecting piece 16, and the connecting piece 16 is an elastic clamping piece, so that the closed coiled pipe 62 is hermetically connected with the inside of the pressure air drainage box 1; the other end of the closed coiled pipe 62 is provided with a sealing retainer ring 621, the sealing retainer ring 621 is adjusted according to the shape of the extraction drill hole 71, and the led-out gas and water mixture enters the compressed air drainage box 1 and then is separated by arranging the closed coiled pipe 62, so that blockage caused by untimely separation in a small space is avoided;
a closed coiled pipe 62 is arranged between the connecting piece 16 and the extraction drill hole 71, the pressure inlet air pipe 3 is sequentially connected with the reducer pipe 31, the connecting pipe 32, the elbow pipe 61 and the guide branch pipe 6, wherein the guide branch pipe 6 sequentially penetrates through the air outlet and the closed coiled pipe 62 and then penetrates into the extraction drill hole 71; the two ends of the reducing pipe 31 are respectively connected with the pressure inlet air pipe 3 and the connecting pipe 32, the pipe diameter of the pressure inlet air pipe 3 is larger than that of the connecting pipe 32, the air pressure in the connecting pipe and the guide branch pipe 6 can be further increased through reducing, the range of pressure air in the extraction drill hole is increased, and the water discharge amount in the extraction drill hole is increased;
the lower end of the compressed air drainage box 1 is provided with the obliquely arranged filtering sieve plate 2, the side wall of the compressed air drainage box 1 corresponding to the lower end of the filtering sieve plate 2 is provided with a discharge port 14 convenient to open and close, the filtering sieve plate 2 can effectively filter coal cinder in a mixture, and the filtering sieve plate 2 is obliquely arranged to prevent the filtering sieve plate 2 from being blocked; the upper surface of the filtering sieve plate 2 is provided with a filtering surface 21 which is convenient to replace, so that the cleaning steps of the filtering sieve plate 2 are reduced;
the top of the box cover 13 is communicated with the extraction pipeline 5 through a conveying pipeline 51, an adjusting valve 42 is arranged on the conveying pipeline 51, the bottom of the conveying pipeline 51 is connected with a convex clamping pipe 4, the convex clamping pipe 4 is clamped at the opening of the box cover 13, and a filter screen 41 is arranged at the bottom of the convex clamping pipe 4, so that the coal cinder and the water can be effectively blocked; as shown in fig. 2, the filter screen 41 is a conical filter screen, so that gas flow is prevented from being influenced after being blocked by coal slag, water on the filter screen 41 is convenient to collect and then drip, an external thread 43 is arranged at the upper end of the conical filter screen, so that the connection stability is improved, and the conical filter screen 41 is screwed at the bottom of the convex clamping pipe 4;
the bottom of the compressed air drainage tank 1 is connected with a water outlet pipe 17, a water outlet valve 171 is arranged on the water outlet pipe, and waste water collection can be completed by adjusting the water outlet valve 171 according to actual needs.
Specifically, the material of the guide branch pipe 6 is a phi 15mm galvanized pipe, the pressure inlet air pipe and the conveying pipeline are phi 108mm galvanized pipes, and the inner diameter of the closed coiled pipe is 108 mm; in the test, 5 downlink drill holes are drained, the distance between the drill holes and the guide branch pipe 6 is 70-80% of the depth of the drill holes, and about 75% of accumulated water in the drill holes 71 can be drained through detection.
While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A down gas extraction drill hole compressed air drainage device is located on the outer side of an extraction drill hole and comprises a support, and the device is characterized in that a compressed air drainage box is arranged on the support, the compressed air drainage box is provided with a box cover matched with the compressed air drainage box, one side wall of the compressed air drainage box is provided with a penetrating compressed air inlet, the side wall opposite to the side wall provided with the compressed air inlet is provided with an air outlet, the compressed air inlet is used for accommodating a compressed air pipe to penetrate through, the air outlet is provided with a connecting piece, a closed coiled pipe is arranged between the connecting piece and the extraction drill hole, the compressed air pipe is sequentially connected with a reducer pipe, a connecting pipe, a bent pipe and a guide branch pipe, and the guide branch pipe sequentially penetrates through the air outlet and the closed coiled pipe and then penetrates into the extraction drill hole; the top of the box cover is communicated with the extraction pipeline through a conveying pipeline, and the bottom of the compressed air drainage box is connected with a water outlet pipe.
2. The downward gas extraction borehole compressed air drainage device according to claim 1, wherein a groove is formed in the top end of the side wall of the compressed air drainage box, and the box cover is just clamped in the groove.
3. The pneumatic and drainage device for the downlink gas extraction drill hole according to claim 1, wherein the conveying pipeline is provided with a regulating valve, the bottom of the conveying pipeline is connected with a convex clamping pipe, the convex clamping pipe is clamped at an opening of the box cover, and the bottom of the convex clamping pipe is provided with a filter screen.
4. The pneumatic drainage device for the downward gas extraction drill hole according to claim 3, wherein the filter screen is a conical filter screen, an external thread is arranged at the upper end of the conical filter screen, and the conical filter screen is screwed at the bottom of the convex clamping pipe.
5. The pressure wind and water drainage device for the downward gas extraction drill hole according to claim 1, wherein a rubber sealing collar is clamped on the pressure wind inlet, and the pressure wind pipe is clamped in the rubber sealing collar.
6. The downward gas extraction borehole compressed air drainage device according to claim 1, wherein both ends of the reducer pipe are respectively connected with a compressed air inlet pipe and a connecting pipe, and the diameter of the compressed air inlet pipe is larger than that of the connecting pipe.
7. The pneumatic drainage device for the downward gas extraction drill hole according to claim 1, wherein the connecting piece is an elastic clamping piece, so that the closed coiled pipe is hermetically connected with the inside of the pneumatic drainage box; and a sealing retainer ring is arranged at the other end of the closed coiled pipe and is adjusted according to the shape of the extraction drill hole.
8. The downward gas extraction drill hole compressed air drainage device as claimed in claim 1, wherein the lower end of the compressed air drainage box is provided with an obliquely arranged filtering sieve plate, and the side wall of the compressed air drainage box corresponding to the lower end of the filtering sieve plate is provided with a discharge port convenient for opening and closing.
9. The pneumatic and drainage device for the downward gas extraction drill hole according to claim 8, wherein the upper surface of the filter sieve plate is provided with a filter surface which is convenient to replace.
10. The pneumatic and drainage device for the downward gas extraction drill hole according to claim 1, wherein a water outlet valve is arranged on the water outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122458956.4U CN216077214U (en) | 2021-10-13 | 2021-10-13 | Down gas drainage drilling forced air drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122458956.4U CN216077214U (en) | 2021-10-13 | 2021-10-13 | Down gas drainage drilling forced air drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216077214U true CN216077214U (en) | 2022-03-18 |
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ID=80638613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122458956.4U Active CN216077214U (en) | 2021-10-13 | 2021-10-13 | Down gas drainage drilling forced air drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216077214U (en) |
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2021
- 2021-10-13 CN CN202122458956.4U patent/CN216077214U/en active Active
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