CN114837733B - Gas detection is with adopting equipment - Google Patents
Gas detection is with adopting equipment Download PDFInfo
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- CN114837733B CN114837733B CN202210620792.7A CN202210620792A CN114837733B CN 114837733 B CN114837733 B CN 114837733B CN 202210620792 A CN202210620792 A CN 202210620792A CN 114837733 B CN114837733 B CN 114837733B
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 64
- 238000000605 extraction Methods 0.000 claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000005553 drilling Methods 0.000 claims description 35
- 230000000903 blocking effect Effects 0.000 claims description 25
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 6
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000004868 gas analysis Methods 0.000 claims 1
- 239000003034 coal gas Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 90
- 239000002002 slurry Substances 0.000 description 12
- 239000003245 coal Substances 0.000 description 6
- 238000005457 optimization Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
- E21B33/146—Stage cementing, i.e. discharging cement from casing at different levels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of coal gas extraction, in particular to gas detection extraction equipment, which comprises a plugging head attached to the inner wall of a drill hole, wherein a first plugging part is arranged on the side wall of the plugging head, the first plugging part is communicated with a material injection pump, a plurality of mutually detachably connected extension pipelines are abutted to one end of the plugging head, a collecting pipe is communicated to one end, away from the plugging head, of the extension pipeline, a collecting head is arranged inside the collecting pipe, a first sealing part is arranged at one end, away from the extension pipeline, of the collecting pipe, one end of the collecting head is communicated with a gas analyzer through the collecting pipeline, the middle of the collecting pipeline penetrates through the first sealing part, an extraction pump is communicated to the bottom of the collecting pipe, and a second sealing part is detachably connected to the drill hole. The invention can achieve the purposes of improving the gas extraction process and the sealing performance after the gas extraction is finished.
Description
Technical Field
The invention relates to the technical field of coal gas extraction, in particular to extraction equipment for gas detection.
Background
The gas is a harmful factor in coal mine production, not only pollutes air, but also can be exploded when meeting fire when the content is increased, the gas is a mixed gas consisting of methane, carbon dioxide, nitrogen and the like escaping from coal and surrounding rocks, and the gas pressure and the gas content are important parameters for marking the occurrence state of the coal seam gas. The measurement of the coal bed gas pressure and the gas content is not only beneficial to the research of occurrence and emission rules of the coal bed gas, but also beneficial to gas extraction, and can be developed and utilized as a coal associated resource. The existing gas extraction detection equipment only extracts gas, the sealing measures are not ideal in the extraction process and after the extraction is finished, and the gas is easy to leak, so that the problem that the extraction equipment for gas detection is needed to solve urgently is solved.
Disclosure of Invention
The invention aims to provide extraction equipment for gas detection, which aims to solve the problems and achieve the purposes of improving the gas extraction process and improving the sealing performance after the gas extraction is finished.
In order to achieve the purpose, the invention provides the following scheme: the utility model provides a gas detection is with adopting equipment of taking out, includes the shutoff head with the laminating of drilling inner wall, the shutoff head lateral wall is equipped with first shutoff portion, first shutoff portion intercommunication has the notes material pump, shutoff head one end butt has a plurality of extension pipelines that can dismantle the connection of each other, the extension pipeline is kept away from shutoff head one end intercommunication has the collecting pipe, the inside acquisition head that is equipped with of collecting pipe, the collecting pipe is kept away from extension pipeline one end is equipped with first sealing, acquisition head one end has gas analyzer through the acquisition pipeline intercommunication, the acquisition pipeline middle part is passed first sealing, collecting pipe bottom intercommunication has the pump of taking out, drilling can be dismantled and be connected with the second sealing.
Preferably, the first plugging portion comprises a ring groove formed in the outer side wall of the plugging head, the outer side wall of the plugging head is in contact with the inner wall of the drilled hole, the ring groove is close to one side of the central axis of the plugging head and is provided with symmetrically arranged tapered grooves, the middle part of the plugging head is provided with a hole channel, the tapered grooves are communicated with the hole channel, and a leakage-proof portion is arranged at the joint of the tapered grooves and the hole channel.
Preferably, the leakage-proof part comprises a limiting sleeve, the outer wall of the limiting sleeve is fixedly connected with the bottom of the conical groove, a sealing groove is formed in the bottom wall of the limiting sleeve, a sealing ring is arranged in the sealing groove, a plug is fixedly connected below the sealing ring, and the top of the plug is magnetically connected with the bottom wall of the limiting sleeve.
Preferably, the first sealing part comprises a connecting sleeve, one end of the connecting sleeve is fixedly connected with the end part of the collecting pipe, the other end of the connecting sleeve is detachably connected with an end cover, a conical sealing plug is arranged between the end cover and the connecting sleeve, the collecting pipeline penetrates through the middle parts of the conical sealing plug and the end cover, one end of the end cover, far away from the connecting sleeve, is in threaded connection with two symmetrically-arranged screws, the end part of each screw is abutted against the conical sealing plug, and a second sealing ring is arranged on a joint surface of the end cover and the collecting pipeline.
Preferably, the collecting head comprises a collecting head shell, a plurality of air inlets are formed in the side wall of the end part of the collecting head shell, the axis of each air inlet is perpendicular to the axis of the collecting head shell, two symmetrically-arranged filter screens are fixedly connected to the side wall of the collecting head shell, the axis of each air inlet is perpendicular to the plane of each filter screen, and a flow blocking part is arranged in the middle of the collecting head shell.
Preferably, choked flow portion is including seting up the gas passage of the end of giving vent to anger of collection head shell, gas passage is back the font structure, there is spacing ball at collection head shell middle part through spring elastic connection, collection head shell inner wall rigid coupling has the limiting plate, the limiting plate is located spacing ball is kept away from spring one side.
Preferably, the second sealing portion comprises a drilling plugging head, the drilling plugging head is detachably connected with the drilling hole, a conical opening is formed in the middle of one end of the drilling plugging head, a flow channel is formed in the drilling plugging head, the flow channel is communicated with the edge of the drilling plugging head, and the flow channel is communicated with the conical opening.
Preferably, the two adjacent extension pipe ends are detachably connected through a second threaded sleeve.
The invention has the following technical effects: the drilling hole is punched by drilling equipment, the plugging head is integrally connected with the drilling hole through a first plugging part after gas extraction is finished, gas leakage is prevented, the injection pump injects high-pressure slurry into the first plugging part for sealing, a plurality of extension pipelines can be used for adapting to gas generation positions with different depths, a channel is arranged between the plugging head and the extension pipelines and used for guiding out gas, one end, close to the collecting pipe, of each extension pipeline is provided with a sleeve, the sleeves are fixedly connected with the collecting pipe through first thread sleeves, the sealing performance of the collecting pipe and the extension pipelines is enhanced, the first sealing part prevents the collecting head from leaking gas after penetrating into the collecting pipe, the collecting head conveys gas to a gas analyzer through the collecting pipeline and detects the gas, and the extraction pump can collect redundant gas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is an enlarged view of a portion of the present invention at A;
FIG. 3 is an enlarged view of a portion of the present invention at B;
FIG. 4 is a schematic view of the internal structure of the pick head of the present invention;
FIG. 5 is a schematic view of a second threaded sleeve according to the present invention;
FIG. 6 is a schematic view of a drilling plug structure according to the present invention;
FIG. 7 is a schematic view of a drilling structure after grouting plugging according to the present invention;
wherein, 1, a collecting box; 2. an extraction pump; 3. a gas analyzer; 4. a material injection pump; 5. a valve; 6. collecting a pipeline; 7. a pick head; 8. grouting a pipeline; 9. a collection pipe; 10. a first threaded sleeve; 11. a sleeve; 12. an air intake duct; 13. a first seal ring; 14. an annular groove; 15. plugging a plug; 16. a tapered groove; 17. lengthening the pipeline; 18. drilling; 19. a limiting sleeve; 20. a seal ring; 21. a sealing groove; 22. a plug; 23. connecting sleeves; 24. an end cap; 25. a screw; 26. a second seal ring; 27. a conical sealing plug; 28. drilling a hole and plugging a head; 29. a tapered opening; 30. a flow channel; 701. a pick head housing; 702. an air inlet; 703. filtering with a screen; 704. a gas channel; 705. a limiting ball; 706. a spring; 707. a limiting plate; 31. a second threaded sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-7, this embodiment provides a gas detection is with adopting equipment, including the shutoff head 15 with 18 inner wall laminating of drilling, shutoff head 15 lateral wall is equipped with first shutoff portion, first shutoff portion intercommunication has notes material pump 4, 15 one end butt of shutoff head has a plurality of extension pipelines 17 that can dismantle the connection of each other, extension pipeline 17 is kept away from 15 one end intercommunication of shutoff head and is had collecting pipe 9, collecting pipe 9 is inside to be equipped with the mining head 7, collecting pipe 9 is kept away from extension pipeline 17 one end and is equipped with first sealing, collecting head 7 one end has gas analyzer 3 through collecting pipeline 6 intercommunication, collecting pipeline 6 middle part passes first sealing, collecting pipe 9 bottom intercommunication has adopts pump 2, drilling 18 can be dismantled and be connected with the second sealing.
The drill hole 18 is formed by drilling through drilling equipment (not shown in the figure), a sealing head 15 is left in the drill hole 18 after gas extraction is finished and is connected with the drill hole 18 into a whole through a first sealing part to prevent gas leakage, a material injection pump 4 injects high-pressure slurry into the first sealing part to seal, a first sealing ring 13 is arranged on a joint surface of the sealing head 15 and an extension pipeline 17 to provide sealing performance, a plurality of extension pipelines 17 can be used for adapting to gas generation parts with different depths, a channel is formed between the sealing head 15 and the extension pipeline 17 and used for guiding out gas, a sleeve 11 is arranged at one end, close to a collecting pipe 9, of the extension pipeline 17, the sleeve 11 is fixedly connected with the collecting pipe 9 through a first threaded sleeve 10 to enhance the sealing performance of the collecting pipe 9 and the extension pipeline 17, the first sealing part prevents a collecting head 7 from penetrating into the collecting pipe 9 to leak gas, the collecting head 7 conveys the gas to a gas analyzer 3 through the collecting pipeline 6 to detect, and a collecting pump 2 can collect redundant gas and store the redundant gas in the collecting tank 1.
Further optimization scheme, first shutoff portion is including seting up the ring channel 14 at shutoff head 15 lateral wall, and shutoff head 15 lateral wall contacts with drilling 18 inner walls, and ring channel 14 is close to 15 axis one side of shutoff head and has seted up the toper groove 16 that the symmetry set up, and the pore has been seted up at 15 middle parts of shutoff head, toper groove 16 and pore intercommunication, and the toper groove 16 is equipped with the leak protection portion with the pore junction.
Further optimize scheme, leak protection portion includes stop collar 19, and 19 outer walls of stop collar and 16 bottom rigid couplings of conical groove, 19 diapire of stop collar have seted up seal groove 21, are equipped with sealing ring 20 in the seal groove 21, and the rigid coupling below sealing ring 20 has end cap 22, and end cap 22 top and 19 diapire magnetism of stop collar are connected. When gas is extracted, the top of the blocking head 15 is attracted with the limiting sleeve 19, the blocking head 15 further compresses the sealing ring 20 upwards under the pushing of pressure due to the fact that the gas has certain pressure, the gas is prevented from entering the tapered groove 16, the sealing performance in the gas extraction process is enhanced, after the gas extraction is finished, the material injection pump 4 is started, the material injection pump 4 injects slurry into the annular groove 14 through the slurry injection pipeline 8, the slurry enters the tapered groove 16 along with the increase of the pressure of the slurry, the blocking head 22 is opened and flows into a channel in the middle of the blocking head 15, the blocking after the gas extraction is finished is achieved, and the gas leakage is prevented.
According to the further optimization scheme, the first sealing portion comprises a connecting sleeve 23, one end of the connecting sleeve 23 is fixedly connected with the end portion of the collecting pipe 9, the other end of one end of the connecting sleeve 23 is detachably connected with an end cover 24, a conical sealing plug 27 is arranged between the end cover 24 and the connecting sleeve 23, the collecting pipeline 6 penetrates through the conical sealing plug 27 and the middle portion of the end cover 24, one end, far away from the connecting sleeve 23, of the end cover 24 is in threaded connection with two symmetrically-arranged screws 25, the end portion of each screw 25 is abutted against the conical sealing plug 27, and a second sealing ring 26 is arranged on the joint surface of the end cover 24 and the collecting pipeline 6. The connecting sleeve 23 plays a role in connecting the collecting pipe 9 and the end cover 24, after the collecting head 7 is placed into the collecting pipe 9, the end cover 24 and the connecting sleeve 23 can be fixedly connected through bolts, the screw 25 is screwed, the end part of the screw 25 applies pressure to the conical sealing plug 27, the conical sealing plug 27 is extruded into the connecting sleeve 23, gas is prevented from leaking between the collecting pipeline 6 and the connecting sleeve 23, meanwhile, the collecting head 7 is convenient to disassemble and assemble, and the second sealing ring 26 also plays a sealing role.
In a further optimized scheme, the collecting head 7 comprises a collecting head shell 701, a plurality of air inlets 702 are formed in the side wall of the end portion of the collecting head shell 701, the axis of each air inlet 702 is perpendicular to the axis of the collecting head shell 701, two symmetrically arranged filter screens 703 are fixedly connected to the side wall of the collecting head shell 701, the axis of each air inlet 702 is perpendicular to the plane of each filter screen 703, and a flow blocking portion is arranged in the middle of the collecting head shell 701.
In a further optimized scheme, the flow blocking part comprises a gas channel 704 arranged at the gas outlet end of the collecting head shell 701, the gas channel 704 is of a rectangular-shaped structure, the middle part of the collecting head shell 701 is elastically connected with a limiting ball 705 through a spring 706, a limiting plate 707 is fixedly connected to the inner wall of the collecting head shell 701, and the limiting plate 707 is positioned on one side, away from the spring 706, of the limiting ball 705. The collecting head 7 can prevent gas backflow, gas in the surrounding rock enters the collecting head shell 701 through the gas inlet 702, the filter screen 703 can filter out particulate matters carried in the gas, the gas pushes the limiting ball 705 to move towards the right side, the gas enters the collecting pipeline 6 through the gas channel 704, after the gas is exhausted, the limiting ball 705 resets under the elastic action of the spring 706, at the moment, the gas can not enter the collecting head shell 701 through the right end of the gas channel 704, and the gas backflow leakage is prevented.
According to the further optimization scheme, the second sealing portion comprises a drilling blocking head 28, the drilling blocking head 28 is detachably connected with the drilling hole 18, a conical opening 29 is formed in the middle of one end of the drilling blocking head 28, a flow channel 30 is formed inside the drilling blocking head 28, the flow channel 30 is communicated with the edge of the drilling blocking head 28, and the flow channel 30 is communicated with the conical opening 29. And after the gas extraction is finished, the whole equipment is moved out of the drill hole 18, the drill hole plugging head 28 is arranged at the outlet end of the drill hole 18 through a bolt at the drill hole 18, the grouting pipeline 8 is inserted into the conical opening 29, and grouting operation is carried out, so that slurry is filled in a gap between the inner wall of the drill hole 18 and the outer wall of the drill hole plugging head 28 through the flow channel 30, and gas leakage is prevented.
In a further optimized scheme, the ends of the two adjacent extension pipelines 17 are detachably connected through a second threaded sleeve 31. Sealing pipe threads are formed in the two ends of the extension pipeline 17, and the connection is fast and high in safety by adopting the connection fixing mode.
The working process of the embodiment is as follows: the drilling of the drill hole 18 is completed through drilling equipment, the plugging head 15 and the extension pipeline 17 are sequentially sent into the drill hole 18, then the collecting pipe 9 is connected, the collecting head 7 is deeply inserted into the collecting pipe 9, parts such as a connecting sleeve 23 and an end cover 24 are installed, a screw 25 is screwed, the end part of the screw 25 applies pressure to the conical sealing head 27, the conical sealing head 27 is extruded into the connecting sleeve 23, gas is prevented from leaking between the collecting pipeline 6 and the connecting sleeve 23, meanwhile, the collecting head 7 is convenient to assemble and disassemble, and the second sealing ring 26 also plays a role in sealing; gas enters the collecting head shell 701 through the gas inlet 702, the filter screen 703 can filter out particles carried in the gas, the gas pushes the limiting ball 705 to move towards the right side, so that the gas enters the collecting pipeline 6 through the gas channel 704, after the gas is exhausted, the limiting ball 705 resets under the elastic action of the spring 706, and at the moment, the gas cannot enter the collecting head shell 701 through the right end of the gas channel 704, so that the gas is prevented from flowing back and leaking; the gas enters the gas analyzer 3 through the collecting pipeline 6, the gas analyzer 3 detects the gas, the residual gas is collected into the collecting box 1 by the extraction pump 2, after the detection is finished, slurry is injected into the conical groove 16 through the grouting pipeline 8 by the injection pump 4, the sealing performance in the gas extraction process is enhanced, after the gas extraction is finished, the injection pump 4 is started, the slurry is injected into the annular groove 14 through the grouting pipeline 8 by the injection pump 4, the slurry enters the conical groove 16 along with the increase of the pressure of the slurry, the plug 22 is flushed and flows into a channel in the middle of the plug 15, the plugging after the gas extraction is finished is realized, the gas leakage is prevented, when the whole equipment is moved out of the drill hole 18, the drill hole plug 28 is installed at the outlet end of the drill hole 18 through a bolt, the grouting pipeline 8 is inserted into the conical opening 29, the grouting operation is carried out, the slurry is filled in a gap between the inner wall of the drill hole 18 and the outer wall of the drill hole plug 28 through the runner 30, and the gas leakage is prevented.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are only intended to illustrate the preferred embodiments of the present invention, and not to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (7)
1. The utility model provides a gas detection is with adopting equipment which characterized in that: the gas analysis device comprises a blocking head (15) attached to the inner wall of a drill hole (18), a first blocking part is arranged on the side wall of the blocking head (15), the first blocking part is communicated with a material injection pump (4), a plurality of mutually detachably connected extension pipelines (17) are abutted to one end of the blocking head (15), one end, far away from the blocking head (15), of each extension pipeline (17) is communicated with a collecting pipe (9), a collecting head (7) is arranged inside the collecting pipe (9), one end, far away from the extension pipelines (17), of each collecting pipe (9) is provided with a first sealing part, one end of each collecting head (7) is communicated with a gas analyzer (3) through a collecting pipeline (6), the middle part of each collecting pipeline (6) penetrates through the first sealing part, the bottom of each collecting pipe (9) is communicated with a gas extraction pump (2), and the drill hole (18) is detachably connected with a second sealing part;
first shutoff portion is including seting up ring channel (14) of shutoff head (15) lateral wall, shutoff head (15) lateral wall with drilling (18) inner wall contacts, ring channel (14) are close to conical groove (16) that the symmetry set up are seted up to shutoff head (15) axis one side, the pore has been seted up at shutoff head (15) middle part, conical groove (16) and pore intercommunication, conical groove (16) and pore combination department are equipped with the leak protection portion.
2. The gas extraction equipment for gas detection according to claim 1, characterized in that: leak protection portion includes stop collar (19), stop collar (19) outer wall with bell groove (16) bottom rigid coupling, seal groove (21) have been seted up to stop collar (19) diapire, be equipped with sealing ring (20) in seal groove (21), sealing ring (20) below rigid coupling has end cap (22), end cap (22) top with stop collar (19) diapire magnetism is connected.
3. The gas extraction device for gas detection according to claim 1, characterized in that: first sealing portion includes adapter sleeve (23), adapter sleeve (23) one end with collecting pipe (9) tip rigid coupling, adapter sleeve (23) other end can be dismantled and is connected with end cover (24), end cover (24) with be equipped with sealed end cap of toper (27) between adapter sleeve (23), gather pipeline (6) and pass the middle part of sealed end cap of toper (27), end cover (24) are kept away from adapter sleeve (23) one end threaded connection has screw (25) that the bisymmetry set up, screw (25) tip with sealed end cap of toper (27) butt, end cover (24) with it is equipped with second sealing washer (26) to gather pipeline (6) faying face.
4. The gas extraction equipment for gas detection according to claim 1, characterized in that: the collecting head (7) comprises a collecting head shell (701), a plurality of air inlets (702) are formed in the side wall of the end part of the collecting head shell (701), the axis of each air inlet (702) is perpendicular to the axis of the collecting head shell (701), two symmetrically-arranged filter screens (703) are fixedly connected to the side wall of the collecting head shell (701), the axis of each air inlet (702) is perpendicular to the plane where each filter screen (703) is located, and a flow blocking part is arranged in the middle of the collecting head shell (701).
5. The gas extraction device for gas detection according to claim 4, characterized in that: flow-resisting portion is including seting up gas channel (704) of end is given vent to anger in collection head shell (701), gas channel (704) are back the font structure, there is spacing ball (705) through spring (706) elastic connection in collection head shell (701) middle part, collection head shell (701) inner wall rigid coupling has limiting plate (707), limiting plate (707) are located spacing ball (705) are kept away from spring (706) one side.
6. The gas extraction equipment for gas detection according to claim 1, characterized in that: the second sealing portion comprises a drilling blocking head (28), the drilling blocking head (28) is detachably connected with the drilling hole (18), a tapered opening (29) is formed in the middle of one end of the drilling blocking head (28), a flow channel (30) is formed inside the drilling blocking head (28), the flow channel (30) is communicated with the edge of the drilling blocking head (28), and the flow channel (30) is communicated with the tapered opening (29).
7. The gas extraction device for gas detection according to claim 1, characterized in that: the ends of two adjacent extension pipelines (17) are detachably connected through a second thread sleeve (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210620792.7A CN114837733B (en) | 2022-06-02 | 2022-06-02 | Gas detection is with adopting equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210620792.7A CN114837733B (en) | 2022-06-02 | 2022-06-02 | Gas detection is with adopting equipment |
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| CN114837733A CN114837733A (en) | 2022-08-02 |
| CN114837733B true CN114837733B (en) | 2022-12-06 |
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| CN202210620792.7A Active CN114837733B (en) | 2022-06-02 | 2022-06-02 | Gas detection is with adopting equipment |
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| CN117030152B (en) * | 2023-10-08 | 2023-12-22 | 常州风光车辆饰件有限公司 | Lamp air tightness detection equipment |
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| CN110056389A (en) * | 2019-05-29 | 2019-07-26 | 华北科技学院 | A kind of leak detection of mash gas pumping drilling and leak stopping integrated apparatus |
| CN210513837U (en) * | 2019-08-06 | 2020-05-12 | 浙江华科检测技术有限公司 | Gas sampling and collecting device |
| CN112228013A (en) * | 2020-09-14 | 2021-01-15 | 山东科技大学 | Device and method for sealing holes with pressure in full-length sieve tube protecting hole in soft coal layer |
| CN112127940A (en) * | 2020-09-23 | 2020-12-25 | 陇东学院 | Coal mine gas extraction device |
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