CN215804507U - Gas control drilling construction orifice blowout preventer - Google Patents
Gas control drilling construction orifice blowout preventer Download PDFInfo
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- CN215804507U CN215804507U CN202123340725.XU CN202123340725U CN215804507U CN 215804507 U CN215804507 U CN 215804507U CN 202123340725 U CN202123340725 U CN 202123340725U CN 215804507 U CN215804507 U CN 215804507U
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- 238000005553 drilling Methods 0.000 title claims abstract description 34
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 77
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 239000003245 coal Substances 0.000 claims abstract description 21
- 230000002265 prevention Effects 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 70
- 239000007788 liquid Substances 0.000 claims description 27
- 230000001681 protective effect Effects 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 15
- 229920000742 Cotton Polymers 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 8
- 239000003818 cinder Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000002893 slag Substances 0.000 description 13
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Abstract
The utility model discloses a blowout preventer for a gas control drilling construction orifice. The gas control drilling construction orifice blowout preventer comprises a blowout preventer body, wherein an accommodating space is formed in the blowout preventer body, a first connecting port is arranged on the blowout preventer body, and the first connecting port is communicated with the accommodating space; the first connecting pipe is hollow, and is communicated with the accommodating space; one end of the flow guide pipe is connected with the accommodating space of the blowout prevention box body; and the negative pressure separation device is communicated with the flow guide pipe. According to the utility model, negative pressure is generated by the negative pressure separation device, and the mixture generated by the coal holes is sucked into the blowout prevention box body under the action of the negative pressure and then is led out by the flow guide pipe, so that operators are prevented from being injured.
Description
Technical Field
The utility model relates to the technical field of gas control, in particular to a blowout preventer for a gas control drilling construction orifice.
Background
When high gas or outburst mine gas is treated, directional long drill holes are adopted to pre-pump a stope face or a crossheading in advance, due to the fact that geological occurrence of gas on the stope face is complex, gas pressure in the holes is high in the drilling process, the holes are generally drilled on the top and sprayed on the site, certain potential safety hazards exist in field operation, particularly, a drilling operator can suddenly spray the holes in an irregular time in the drilling process, and the drill cuttings in the holes are sprayed out of the holes through gaps between the drill rods and the drill holes under the huge pressure, so that the potential operation hazards are buried for the field operator.
Based on the above, the utility model designs the blowout preventer for the gas control drilling construction orifice, so as to solve the problems.
Disclosure of Invention
The utility model aims to provide a gas treatment drilling hole orifice blowout preventer, which aims to solve the problems that in the background technology, in the drilling construction process of an underground coal seam of a coal mine, the situation of spraying holes is easy to occur, and hidden troubles are caused to underground operation of field operators.
In order to achieve the purpose, the utility model provides the following technical scheme:
a gas abatement drill construction orifice blowout preventer, the gas abatement drill construction orifice blowout preventer comprising:
the blowout preventer box body is internally provided with an accommodating space, and is provided with a first connecting port which is communicated with the accommodating space;
the first connecting pipe is hollow, and is communicated with the accommodating space;
one end of the flow guide pipe is connected with the accommodating space of the blowout prevention box body;
the negative pressure separation device is communicated with the flow guide pipe; wherein,
a drill rod of the drilling machine enters from the first connecting port and penetrates out from the first connecting pipe;
the first connecting pipe is suitable for being inserted into a coal hole drilled by a drilling machine of the coal seam and used for introducing sprayed mixture into the blowout prevention box body when the coal seam is sprayed with a spray hole phenomenon when the drilling machine works;
the negative pressure separation device is used for providing negative pressure for the draft tube, so that at least part of the mixture in the mixture is led out of the draft tube.
Optionally, the negative pressure separation device comprises:
the other end of the flow guide pipe is inserted into the separation bucket, and liquid is contained in the separation bucket;
the negative pressure pump is connected with the separation water bucket and is used for enabling the separation water bucket and the flow guide pipe to form negative pressure;
a rotating blade group provided in the separation water tub;
a water absorption assembly disposed in the separation water tub; wherein,
the rotating blade set is used for stirring the liquid;
the mixture entering the flow guide pipe through negative pressure enters the separation water barrel and is fused with the liquid to form mixed liquid, wherein the mixture comprises gas and other impurities dissolved in the liquid, and the mixed liquid comprises the liquid and the impurities dissolved in the liquid;
the water absorption component is used for filtering gas passing through liquid.
Optionally, one end of the guide pipe extending into the separation water barrel is positioned at the bottom in the separation water barrel;
the rotating blade group includes:
the spiral blade is arranged at one end of the flow guide pipe, which extends into the separation water barrel;
and the stirring blade is fixedly connected with the helical blade, and the stirring blade is rotatably connected with the separation bucket.
Optionally, the blowout prevention tank body comprises a protective shell, a flange plug is fixedly connected to one side of the protective shell, and the flange plug is provided with the first connecting port;
the other side of the protective shell is fixedly connected with an extension pipe, and the end part of the extension pipe is fixedly connected with a first connecting pipe through a flange;
the drill rod penetrates through the first connecting pipe and extends into the first connecting port and penetrates out of the first connecting pipe.
Optionally, the water absorption assembly comprises:
the water absorption cotton is arranged in the separation water bucket;
the fixed filter plate is fixedly connected with the separation water bucket;
the movable filter plate is connected with the separation water bucket in a sliding manner;
one end of the connecting rod is positioned outside the separation water barrel, the other end of the connecting rod is connected with the movable filter plate, and a pull ring is arranged on the connecting rod; wherein,
the fixed filter plate and the movable filter plate are arranged oppositely;
the water absorption cotton is arranged between the fixed filter plate and the movable filter plate.
Optionally, a coarse filter plate is fixedly connected in the protective shell, the protective shell is divided into an air inlet cavity and an air outlet cavity through the coarse filter plate, a slag discharge pipe is fixedly connected to the bottom of the air inlet cavity, and the air outlet cavity is communicated with the guide pipe.
Optionally, arrange the sediment socle portion and be the toper structure, arrange sediment socle portion lateral wall and set up the connector of different diameters, the connector outer wall all is provided with the thread groove and just passes through hose fixedly connected with separator, and separator top fixedly connected with inserts muffler, the bottom fixedly connected with cinder notch of gas pipeline.
Optionally, a supporting platform is installed together with the bottom of the negative pressure pump on the separation bucket, and universal wheels are installed at four corners of the bottom of the supporting platform.
Optionally, the side wall of the separation bucket is fixedly connected with a drain pipe and an observation port, and a transparent plate is arranged on the observation port.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, negative pressure is generated by the negative pressure separation device, and a mixture (including gas and coal slag) generated by the coal holes is sucked into the blowout prevention box body under the action of the negative pressure and then is led out from the flow guide pipe, so that operators are prevented from being injured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of a blowout preventer tank of the present invention;
FIG. 3 is a schematic sectional view of the separation bucket of the present invention;
FIG. 4 is a schematic structural view of a slag discharge pipe according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a negative pressure pump; 2. a blowout prevention box body; 21. a protective shell; 22. a flange plug; 23. lengthening a pipe; 24. a first connecting pipe; 25. a drill stem; 26. a coarse filter plate; 27. an air inlet cavity; 28. an air outlet cavity; 3. separating the water bucket; 31. a flow guide pipe; 32. a helical blade; 33. a stirring blade; 4. a water absorbing assembly; 41. fixing the filter plate; 42. a movable filter plate; 43. absorbent cotton; 44. a connecting rod; 45. a pull ring; 5. an air outlet pipe; 6. a slag discharge pipe; 61. a connector; 7. a support platform; 8. a universal wheel; 9. a drain pipe; 10. a transparent plate; 11. a separator; 12. an air return pipe; 13. a slag discharge port.
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 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.
The gas governing drilling construction orifice blowout preventer as shown in fig. 1 to 4 includes a blowout preventer body 2, a first connection pipe, a draft tube 31, a negative pressure separating device, wherein,
the anti-spraying box body is internally provided with an accommodating space, and the anti-spraying box body is provided with a first connecting port which is communicated with the accommodating space;
the first connecting pipe is hollow and is communicated with the accommodating space;
one end of the draft tube 31 is connected with the accommodating space of the blowout preventer body 2;
the negative pressure separation device is communicated with the flow guide pipe; wherein,
a drill rod 25 of the drilling machine enters from the first connecting port and penetrates out from the first connecting pipe;
the first connecting pipe is suitable for being inserted into a coal hole drilled by a drilling machine of the coal seam and used for introducing sprayed mixture into the blowout prevention box body when the coal seam has a spray hole phenomenon when the drilling machine works;
the negative pressure separation device is used for providing negative pressure for the guide pipe, so that at least part of the mixture in the mixture is led out of the guide pipe.
According to the utility model, negative pressure is generated by the negative pressure separation device, and a mixture (including gas and coal slag) generated by the coal holes is sucked into the blowout prevention box body under the action of the negative pressure and then is led out from the flow guide pipe, so that operators are prevented from being injured.
Referring to fig. 1 to 4, in the present embodiment, the negative pressure separation apparatus includes a separation water tub 3, a negative pressure pump, a rotary blade group, and a water suction assembly 4, the other end of the draft tube is inserted into the separation water tub, and the separation water tub 3 contains liquid therein; the negative pressure pump is connected with the separation water barrel 3 and is used for enabling the separation water barrel 3 and the guide pipe to form negative pressure; the rotating blade group is arranged in the separation water barrel 3; the water absorption component 4 is arranged in the separation water bucket 3; wherein,
the rotating blade set is used for stirring the liquid;
the mixture entering the draft tube through negative pressure enters the separation water barrel 3 and is fused with the liquid to form mixed liquid, wherein the mixture comprises gas and other impurities dissolved in the liquid, and the mixed liquid comprises the liquid and the impurities dissolved in the liquid;
the water absorption assembly 4 is used for filtering gas passing through liquid.
In the present embodiment, one end of the draft tube 31 extending into the separation water tub is located at the bottom in the separation water tub;
the rotating blade group comprises a helical blade 32 and a stirring blade 33, and the helical blade is arranged at one end of the guide pipe 31 extending into the separation water barrel; the stirring blade 33 is fixedly connected with the helical blade 32, and the stirring blade 33 is rotatably connected with the separation water barrel 3.
When the gas control drilling construction orifice blowout preventer is used, a coal hole for installing a first connecting pipe of a blowout preventing box body 2 is formed in a coal seam through a drill rod 25, after the hole is formed, the first connecting pipe is inserted into the coal hole, water is filled in a separation bucket 3, the water surface does not pass through a guide pipe 31, a negative pressure separation device is started, then operation is carried out, gas and coal dust caused by drilling overflow from the periphery of the drill rod 25 during drilling, negative pressure is generated in the separation bucket 3 because the separation bucket 3 is communicated with the negative pressure pump 1 through an air outlet pipe 5, negative pressure is generated in the separation bucket 3, the blowout preventing box body 2 is communicated with the separation bucket 3 through the guide pipe 31, negative pressure is also generated in the blowout preventing box body 2, the sprayed gas and the coal dust are sucked into the blowout preventing box body 2 and enter the separation bucket 3 through the guide pipe 31, after a mixture contacts with the water, other dust in the coal dust is removed, and the gas is difficult to dissolve in the water, gas overflows through aquatic, when the gas mixture passes through helical blade 32, helical blade 32 takes place to rotate and drives stirring vane 33 and rotate, stirring vane 33 stirs the water in the separation water bucket 3, after the gas mixture gets into the aquatic, the gas mixture is more abundant with water contact mixture, can contain micro-drop in the gas after the filtration, after the cotton 43 that absorbs water in the subassembly 4 adsorbs the water in the gas, pure gas passes through outlet duct 5 and gets into negative pressure pump 1, introduce safe region storage by the blast pipe of negative pressure pump 1 again.
By adopting the mode, the situation that the orifice suddenly appears at irregular time and the drill cuttings in the orifice are ejected out of the orifice through the gap between the drill rod 25 and the drilled orifice under huge pressure can be solved; still separate cinder dust and gas through separation cask 3, avoided the gas to leak and caused the operation hidden danger to field operation personnel, when administering high gas mine and carrying out the gas and when construction gas administers drilling engineering, the drill way pressure when can directly reducing downthehole gas and gushing out reduces the on-the-spot construction potential safety hazard, also can reduce downthehole gas and gush out the volume, avoids the gas transfinite in the drilling field, threatens operating personnel life safety.
In this embodiment, the blowout preventer body 2 includes a protective shell 21, a flange plug 22 is fixedly connected to one side of the protective shell 21, and a first connection port is arranged on the flange plug 22;
the other side of the protective shell 21 is fixedly connected with an extension pipe 23, and the end part of the extension pipe 23 is fixedly connected with a first connecting pipe 24 through a flange;
the drill rod 25 extends through the first connection opening into and out of the first connection pipe 24.
In the present embodiment, the water absorbing assembly 4 includes water absorbent cotton disposed in the separation water tub 3, a fixed filter plate 41, a movable filter plate 42, and a connecting rod 44; the fixed filter plate is fixedly connected with the separation water barrel 3; the movable filter plate 42 is connected with the separation water barrel 3 in a sliding way; one end of a connecting rod 44 is positioned outside the separation water barrel 3, the other end of the connecting rod is connected with the movable filter plate 42, and a pull ring 45 is arranged on the connecting rod; wherein, the fixed filter plate 41 is arranged opposite to the movable filter plate 42; the absorbent cotton 43 is disposed between the fixed filter sheet 41 and the movable filter sheet 42.
In the embodiment, a blowout prevention pad is arranged between the drill rod 25 and the flange plug 22; when the blowout prevention box body 2 is installed, the first connecting pipe 24 is installed in the installation hole, then the protective shell 21 is fixed on the first connecting pipe 24 through the flange, the installation difficulty of the blowout prevention box body 2 can be reduced, then the drill rod 25 penetrates through the blowout prevention box body 2 to operate, and when holes are sprayed, the flange plug 22 is matched with the blowout prevention pad, so that gas can be prevented from leaking from the connection position of the drill rod 25 and the flange plug 22.
In one embodiment, a user periodically pulls up the pull ring 45, the pull ring 45 drives the movable filter plate 42 to move upwards through the connecting rod 44, the movable filter plate 42 cooperates with the fixed filter plate 41 to compress the absorbent cotton 43, so as to squeeze out water in the absorbent cotton 43, prolong the operation time of the absorbent cotton 43, prevent the absorbent cotton 43 from being saturated and being incapable of absorbing water drops in gas, and reduce the quality of the discharged gas; in addition, the manual compression of the absorbent cotton 43 has the same effect as the electric compression, but compared with the electric compression, the manual compression avoids the risk of gas explosion caused by electric leakage.
In this embodiment, fixedly connected with coarse filtration board 26 in the protective housing 21, protective housing 21 separates into air inlet chamber 27 and play air cavity 28 through coarse filtration board 26, and air inlet chamber 27 bottom fixedly connected with row's sediment pipe 6, play air cavity 28 and honeycomb duct 31 intercommunication. In this way, the coarse filter plate 26 can separate large-particle coal slag mixed with gas, the workload of the separation bucket 3 is reduced, and in addition, large-particle coal slag shells are transported out for processing and use.
In the embodiment, the bottom of the slag discharging pipe 6 is of a conical structure, the side wall of the bottom of the slag discharging pipe 6 is provided with connectors 61 with different diameters, the outer walls of the connectors 61 are provided with thread grooves and are fixedly connected with a separator 11 through a hose, the top of the separator 11 is fixedly connected with a gas return pipe 12 connected with a gas pipeline, and the bottom of the separator 11 is fixedly connected with a slag discharging port 13; make things convenient for slag pipe 6 to connect the joint of multiple specification, reduce the time that connector 61 and separator 11 are connected to improve work efficiency, cinder and gas get into separator 11 back, during gas got into the gas pipeline from muffler 12, reduce the gas loss, the cinder can carry out recycle.
Referring to fig. 1, in this embodiment, the side wall of the bottom of the slag discharging pipe is provided with connectors with different diameters, and the outer walls of the connectors are provided with thread grooves and fixedly connected with cinder containers through hoses.
In the embodiment, the separation bucket 3 and the bottom of the negative pressure pump 1 are provided with a supporting platform 7 together, and four corners of the bottom of the supporting platform 7 are provided with universal wheels 8; the device is convenient to move, and the flexibility of the device is improved.
Referring to fig. 3, in the present embodiment, a drain pipe 9 and a viewing port are fixedly connected to a side wall of the separation bucket 3, and a transparent plate 10 is fixedly connected to the viewing port; conveniently look over the muddy degree of separation cask 3 internal water, in time trade water.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a drilling construction drill way blowout preventer is administered to gas which characterized in that, drilling construction drill way blowout preventer includes to gas:
the blowout preventer box body (2) is internally provided with an accommodating space, and is provided with a first connecting port which is communicated with the accommodating space;
the first connecting pipe is hollow, and is communicated with the accommodating space;
one end of the draft tube (31) is connected with the accommodating space of the blowout prevention box body (2);
the negative pressure separation device is communicated with the flow guide pipe; wherein,
a drill rod (25) of the drilling machine enters from the first connecting port and penetrates out from the first connecting pipe;
the first connecting pipe is suitable for being inserted into a coal hole drilled by a drilling machine of the coal seam and used for introducing sprayed mixture into the blowout prevention box body when the coal seam is sprayed with a spray hole phenomenon when the drilling machine works;
the negative pressure separation device is used for providing negative pressure for the draft tube so as to lead at least part of the mixture in the mixture out of the draft tube; wherein,
the negative pressure separation device includes:
the other end of the guide pipe is inserted into the separation water bucket (3), and liquid is contained in the separation water bucket (3);
the negative pressure pump is connected with the separation water bucket (3) and is used for enabling the separation water bucket (3) and the flow guide pipe to form negative pressure;
a set of rotating blades arranged inside the separation water tub (3);
a water absorption assembly (4), wherein the water absorption assembly (4) is arranged in the separation water barrel (3); wherein,
the rotating blade set is used for stirring the liquid;
the mixture entering the draft tube through negative pressure enters the separation water barrel (3) and is fused with the liquid to form mixed liquid, wherein the mixture comprises gas and other impurities dissolved in the liquid, and the mixed liquid comprises the liquid and the impurities dissolved in the liquid;
the water absorption component (4) is used for filtering gas passing through liquid.
2. The gas abatement drill hole construction orifice blowout preventer of claim 1, wherein an end of the draft tube (31) extending into the separation drum is located at a bottom portion within the separation drum;
the rotating blade group includes:
a helical blade (32) mounted on one end of the draft tube (31) extending into the separation water tank;
stirring vane (33), stirring vane (33) with helical blade (32) fixed connection, stirring vane (33) with separation cask (3) rotate the connection.
3. The gas management drilling construction orifice blowout preventer of claim 2, wherein: the blowout prevention box body (2) comprises a protective shell (21), one side of the protective shell (21) is fixedly connected with a flange plug (22), and the flange plug (22) is provided with the first connecting port;
the other side of the protective shell (21) is fixedly connected with an extension pipe (23), and the end part of the extension pipe (23) is fixedly connected with a first connecting pipe (24) through a flange;
the drill rod (25) penetrates through the first connecting port, extends into the first connecting pipe (24), and penetrates out of the first connecting pipe.
4. The gas management drilling construction orifice blowout preventer of claim 3, wherein: the water absorption assembly (4) comprises:
the water absorption cotton is arranged in the separation water bucket (3);
the fixed filter plate (41) is fixedly connected with the separation water barrel (3);
the movable filter plate (42), the said movable filter plate (42) and said separation bucket (3) are connected slidably;
one end of the connecting rod (44) is positioned outside the separation water barrel (3), the other end of the connecting rod (44) is connected with the movable filter plate (42), and a pull ring (45) is arranged on the connecting rod; wherein,
the fixed filter plate (41) is arranged opposite to the movable filter plate (42);
the water absorption cotton (43) is arranged between the fixed filter plate (41) and the movable filter plate (42).
5. The gas management drilling construction orifice blowout preventer of claim 4, wherein: fixedly connected with coarse filtration board (26) in protective housing (21), air inlet chamber (27) and play air cavity (28) are separated into through coarse filtration board (26) to protective housing (21), air inlet chamber (27) bottom fixedly connected with row's cinder pipe (6), play air cavity (28) and honeycomb duct (31) intercommunication.
6. The gas management drilling construction orifice blowout preventer of claim 5, wherein: arrange sediment pipe (6) bottom and be the toper structure, arrange sediment pipe (6) bottom lateral wall and offer connector (61) of different diameters, connector (61) outer wall all is provided with the thread groove and through hose fixedly connected with separator (11), and separator (11) top fixedly connected with inserts muffler (12), bottom fixedly connected with row cinder notch (13) of gas pipeline.
7. The gas management drilling construction orifice blowout preventer of claim 6, wherein: support platform (7) are installed jointly to separation cask (3) and negative pressure pump (1) bottom, universal wheel (8) are installed in support platform (7) bottom four corners.
8. The gas management drilling construction orifice blowout preventer of claim 7, wherein: the side wall of the separation bucket (3) is fixedly connected with a drain pipe (9) and an observation port, and a transparent plate (10) is arranged on the observation port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123340725.XU CN215804507U (en) | 2021-12-29 | 2021-12-29 | Gas control drilling construction orifice blowout preventer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123340725.XU CN215804507U (en) | 2021-12-29 | 2021-12-29 | Gas control drilling construction orifice blowout preventer |
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| CN215804507U true CN215804507U (en) | 2022-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645685A (en) * | 2022-03-25 | 2022-06-21 | 河南工程学院 | Hole blowout preventing device for mine gas extraction drill hole |
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2021
- 2021-12-29 CN CN202123340725.XU patent/CN215804507U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645685A (en) * | 2022-03-25 | 2022-06-21 | 河南工程学院 | Hole blowout preventing device for mine gas extraction drill hole |
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Inventor after: Wang Shouguo Inventor after: Liu Jie Inventor after: Du Zhengjie Inventor after: Zhang Weijin Inventor after: Song Zhiqing Inventor after: Wu Xinwen Inventor after: Lv Renjie Inventor after: Hao Baoju Inventor after: Pan Ruxiao Inventor after: Wang Binrong Inventor after: Liu Shaoze Inventor after: Li Zhibin Inventor after: Zhang Hao Inventor before: Wu Xinwen Inventor before: Zhang Weijin Inventor before: Song Zhiqing Inventor before: Hao Baoju Inventor before: Pan Ruxiao Inventor before: Wang Binrong Inventor before: Liu Shaoze Inventor before: Li Zhibin Inventor before: Zhang Hao Inventor before: Liu Jie Inventor before: Du Zhengjie |