CN116291689A - Self-adaptive multistage buffering anti-spraying hole device for gas extraction drilling spraying holes - Google Patents
Self-adaptive multistage buffering anti-spraying hole device for gas extraction drilling spraying holes Download PDFInfo
- Publication number
- CN116291689A CN116291689A CN202310288863.2A CN202310288863A CN116291689A CN 116291689 A CN116291689 A CN 116291689A CN 202310288863 A CN202310288863 A CN 202310288863A CN 116291689 A CN116291689 A CN 116291689A
- Authority
- CN
- China
- Prior art keywords
- gas
- slag
- connecting pipe
- extraction
- orifice
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000605 extraction Methods 0.000 title claims abstract description 106
- 238000005507 spraying Methods 0.000 title claims abstract description 45
- 230000003139 buffering effect Effects 0.000 title claims abstract description 35
- 238000005553 drilling Methods 0.000 title claims abstract description 34
- 239000002893 slag Substances 0.000 claims abstract description 168
- 238000000926 separation method Methods 0.000 claims abstract description 59
- 238000003860 storage Methods 0.000 claims abstract description 33
- 239000003245 coal Substances 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 16
- 230000002265 prevention Effects 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000003044 adaptive effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 239000007921 spray Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000002775 capsule Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005086 pumping Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration 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
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Images
Classifications
-
- 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
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- 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)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to the technical field of mine gas disaster management, in particular to a self-adaptive multi-stage buffering anti-spraying hole device for a gas extraction drilling spraying hole, which comprises the following components: the orifice blowout preventer and the gas-slag separator are communicated through a buffer connecting pipe; the orifice blowout preventer is provided with a sleeve pipe for being inserted into the coal seam; a slag discharging port is arranged at the bottom of one side surface of the gas-slag separation device, and a baffle is rotationally connected to the slag discharging port on the outer side surface of the gas-slag separation device; the other side surface of the gas-slag separation device is provided with a storage box, one end of the storage box, which is far away from the gas-slag separation device, is provided with a movable baffle plate in rotary connection, and a telescopic bag is arranged in the storage box and is communicated with the gas-slag separation device through a communication hole; the orifice blowout preventer, the gas-slag separator and the telescopic bag are communicated with the extraction pipeline. The self-adaptive buffer volume change can be carried out, slag is automatically discharged and sealing is carried out, so that gas leakage to the drill site space is prevented from causing gas overrun, and mine safety production is guaranteed.
Description
Technical Field
The invention relates to the technical field of mine gas disaster management, in particular to a self-adaptive multistage buffering anti-spraying hole device for a gas extraction drilling spraying hole.
Background
Coal and gas outburst is one of the most serious disasters in the current coal mining process. Over 50% of coal seams adopted by the outburst mine and the high-gas mine are crushed soft coal seams, and if the gas prevention and control measures are not carried out in place, the danger of outburst of the coal seams cannot be eliminated, so that coal and gas outburst accidents are very easy to occur.
Since research on coal and gas outburst mechanisms still stays in a hypothesis stage, great difficulty still exists in outburst prevention, and at present, the most effective means for outburst prevention is to reduce the pressure and content of coal seam gas through gas extraction, so that the outburst risk of the coal seam is eliminated. The gas extraction method in the prior art mainly comprises ground well extraction, underground bedding extraction, through-layer extraction and underground combined extraction, and is the most mature and widely applied in the prior art.
However, when a gas extraction borehole is constructed underground, abnormal gas emission or jet hole phenomenon can occur, so that gas overrun or coal particles hurt people, and the safety production of a mine is affected. Therefore, how to provide an anti-spraying hole device, which ensures that when a gas extraction drilling hole is constructed, a buffer space can effectively contain the gas sprayed out after the spraying hole occurs, so that the gas is prevented from being overrun, the production safety of a mine is ensured, and the anti-spraying hole device is one of important research directions in the field.
At present, measures for effectively preventing gas spraying holes are not adopted when gas extraction and drilling are carried out in most mines, a few mines adopt a spraying hole prevention device shown in figure 1, only one spraying hole prevention device is arranged in the mines, the other spraying hole prevention device shown in figure 2 is also adopted in the mines, the spraying hole prevention device consists of a hole spraying hole prevention device, a gas-slag separation device and a connecting hose, gas released in the holes in the normal construction process is transported to the hole spraying hole prevention device and the gas-slag separation device, the gas enters the extraction system under the negative pressure effect of an extraction pipeline, and water slag is discharged through a water slag outlet arranged on the gas-slag separation device.
However, the existing anti-spraying hole device has the defects that the device specifically comprises:
1. as shown in fig. 1, the blowout prevention device with only one hole is provided with a blowout prevention device 1, a sleeve 6 of the blowout prevention device is inserted into a coal seam 7 or a rock wall, a slag hole 103 of the blowout prevention device cannot be sealed, so that a large amount of gas which is not pumped by a pumping pipeline 4 leaks into a drill site space 8 to cause overrun, and the buffer volume of the blowout prevention device is too small to be suitable for the blowout prevention needs when the strength of objectively existing holes are different;
2. as shown in fig. 2, the gas-slag separation device 2 is generally made of metal and is connected with the gas extraction pipeline 4 through a connecting hose 3, and the side wall of the gas-slag separation device 2 is also provided with an opening as a slag discharge port 206, so that the volume of the gas-slag separation device 2 is fixed; if the volume is too large, the problems of heavy weight, large volume, inconvenient transportation, occupation of drill site space and the like exist, and the volume of the gas-slag separation device 2 cannot be too large in the actual use environment, because the gas-slag separation device cannot be installed in the drill site space 8 after being too large, the normal extraction drilling work is affected, and even the problem that strong spray holes cannot be bumped exists;
3. whether the anti-spraying hole device shown in fig. 1 or the anti-spraying hole device shown in fig. 2 is a fixed-volume anti-spraying hole device, when the gas emission or spraying amount is larger than the gas amount which can be contained by the orifice anti-spraying device 1 and the gas slag separation device 2 and the gas cannot be timely pumped out by the extraction pipeline 4, the gas can rapidly flow out to the drill site space 8 to cause gas overrun, and the mine safety production is affected.
Therefore, a self-adaptive multi-stage buffering anti-spraying hole device for gas extraction drilling spraying holes is urgently needed at present, and can perform self-adaptive buffering volume change, automatic slag discharging and sealing, so that gas leakage to a drilling site space is prevented from causing gas overrun, and mine safety production is guaranteed.
Disclosure of Invention
The invention aims to provide a self-adaptive multi-stage buffering anti-spraying hole device for gas extraction drilling spraying holes, which can perform self-adaptive buffering volume change, and automatically slag discharge and sealing so as to prevent gas from leaking into a drilling site space to cause gas overrun and ensure mine safety production.
The invention provides the following basic scheme: a gas extraction drilling orifice self-adaptive multi-stage buffering orifice-preventing device comprises: an orifice blowout preventer and a gas-slag separator;
the orifice blowout preventer and the gas-slag separator are communicated through a buffer connecting pipe;
the orifice blowout preventer is provided with a sleeve pipe for being inserted into the coal seam;
a slag discharging port is arranged at the bottom of one side surface of the gas-slag separation device, and a baffle is rotationally connected to the slag discharging port on the outer side surface of the gas-slag separation device; the other side surface of the gas-slag separation device is provided with a storage box, one end of the storage box, which is far away from the gas-slag separation device, is provided with a movable baffle plate in rotary connection, and a telescopic bag is arranged in the storage box and is communicated with the gas-slag separation device through a communication hole;
the orifice blowout preventer, the gas-slag separator and the telescopic bag are communicated with the extraction pipeline.
Further, the orifice blowout preventer, comprising: a main body;
the sleeve is arranged on one side surface of the main body; the main body is symmetrically provided with a first extraction hole and a slag hole; the first extraction opening is communicated with the extraction pipeline through a first connecting pipe; the slag outlet is communicated with the gas-slag separation device through a buffer connecting pipe.
Further, the gas-slag separation device includes: a case;
the top surface of the box body is provided with a slag inlet and a second extraction opening; the slag inlet is connected with the buffer connecting pipe; the second extraction opening is communicated with the extraction pipeline through a second connecting pipe;
the containing box is arranged on one side of the box body, and the slag discharging port is arranged on the other side of the box body.
Further, a guide plate is arranged below the slag inlet in the box body, the guide plate is obliquely arranged, the lowest side of the guide plate is in contact with the inner bottom surface of the box body, the two inclined sides are respectively in contact with two opposite inner side surfaces in the box body, a slag outlet is formed in one inner side surface, and a communication hole is formed in the other inner side surface.
Further, a baffle fixing device is arranged on the side face of the storage box;
the baffle fixing device is used for fixing the movable baffle and comprises: an L-shaped fixed rod and an L-shaped movable rod;
one end face of the L-shaped fixing rod is fixedly connected with the side face of the storage box, the other end of the L-shaped fixing rod faces upwards, and the L-shaped fixing rod is vertically arranged;
one end face of the L-shaped movable rod is fixedly connected with the outer surface of the movable baffle, the L-shaped movable rod is horizontally arranged, one end of the L-shaped movable rod is in contact with the L-shaped fixed rod and is positioned above the horizontal rod part of the L-shaped fixed rod, the movable rod is connected with the other end face of the L-shaped movable rod in a rotating mode, and the movable rod is vertically downward under the action of no external force.
Further, the rotational connection is mounted by a hinge.
Further, the buffer connecting pipe adopts a steel wire hose, and the diameter of the buffer connecting pipe is 108mm, and the length is more than or equal to three meters.
Further, a third extraction opening is formed in one side surface, in contact with the movable baffle, of the telescopic bag, and the third extraction opening is communicated with the extraction pipeline through a three connecting pipe.
Further, valves are arranged on the first connecting pipe, the second connecting pipe and the third connecting pipe, and steel wire hoses are adopted for the first connecting pipe, the second connecting pipe and the third connecting pipe.
Further, the telescopic bag adopts a rubber capsule.
The basic principle and the beneficial effect of the scheme are that: the scheme comprises four stages of buffering, wherein the first stage is an orifice blowout preventer, and a sleeve pipe used for being inserted into a coal bed is arranged on the orifice blowout preventer, so that when a gas extraction borehole is constructed, the sleeve pipe is inserted into coal to fix the orifice blowout preventer and form the first stage of buffering, and the orifice blowout preventer is communicated with an arranged extraction pipeline, so that the gushed gas is extracted under the negative pressure of the extraction pipeline;
the second stage is a buffer connecting pipe for communicating the orifice blowout preventer and the gas-slag separation device, and has a buffer effect on water slag and gas discharged from the orifice blowout preventer to the gas-slag separation device;
the third stage is a gas-slag separation device which is used for collecting water slag and discharging slag, and has a collecting and buffering effect on the flushed gas, wherein the buffering space (the volume of the gas-slag separation device) is determined according to the gas quantity and the extraction quantity sprayed out of the general jet hole intensity of a mine, and the gas-slag separation device is communicated with an extraction pipeline, so that the flushed gas is extracted under the negative pressure effect of the extraction pipeline; in addition, the gas-slag separation device performs slag discharge through a slag discharge port arranged at the bottom of one side surface of the gas-slag separation device, a baffle is rotationally connected to the slag discharge port on the outer side surface of the gas-slag separation device so as to shield the slag discharge port, when negative pressure extraction is performed on a extraction pipeline, the external pressure of the device is higher than the internal pressure, so that the baffle shields the slag discharge port, and the device is sealed to prevent excessive gas which is not extracted from leaking into a drilling site space in a large amount; when the water slag in the gas-slag separation device is accumulated to the same height as the slag discharge port, the negative pressure state at the baffle plate in the device disappears, the water slag gives the baffle plate an outward rotating acting force, the baffle plate rotates outwards, and the slag discharge port is opened for slag discharge; along with the slag discharge, the baffle plate is restored to a negative pressure state, the acting force of water slag is far smaller than the acting force of pressure difference between the inside and the outside of the device, the baffle plate rotates inwards, and a slag discharge port is closed and sealed;
the fourth stage is a telescopic bag, the telescopic bag is arranged in a storage box, the storage box is arranged on one side of the gas-slag separation device, and one end of the storage box, which is far away from the gas-slag separation device, is provided with a movable baffle plate which is rotationally connected, so that when the buffer requirement can be met by the front three stages of buffer, the telescopic bag is stored in the storage box, the size is small, the normal work is not affected, and when the gas emission or the emission quantity is larger than the gas quantity which can be contained by the orifice blowout preventer and/or the gas-slag separation device and the extraction pipeline cannot timely extract the gas, the volume of the telescopic bag is self-adaptively expanded and contracted according to the quantity of the emitted gas, so that the buffer requirements of different gas quantities are met; and the telescopic bag is communicated with the extraction pipeline so that the gushed gas is extracted under the negative pressure of the extraction pipeline.
Through the four-stage buffering, self-adaptive volume change, automatic deslagging and sealing can be performed, so that gas leakage to a drilling site space is prevented from causing gas overrun, and mine safety production is prevented from being influenced.
1. The arrangement of the four-stage buffer can effectively buffer the gas which is flushed out so as to facilitate the timely extraction of the gas by the extraction pipeline, the telescopic bag in the four-stage buffer can carry out self-adaptive buffer volume change, and the slag discharging port of the gas-slag separation device can automatically discharge slag and seal, thereby effectively preventing the gas from leaking into the drilling site space to cause gas overrun and guaranteeing the safe production of a mine;
2. the main body of the orifice blowout preventer is symmetrically provided with a first extraction opening and a slag hole, and the first extraction opening is communicated with an extraction pipeline through a first connecting pipe arranged to be used as an extraction opening; the slag hole is communicated with the gas-slag separation device through the buffer connecting pipe, and can be used as another extraction hole besides the slag hole of the orifice blowout preventer;
3. the baffle is rotationally connected to the slag discharging port on the outer side surface of the gas-slag separation device, specifically, the baffle is installed by adopting a hinge, the installation is convenient, the automatic slag discharging and sealing are realized according to the internal stress and the internal pressure change, and the phenomenon that a large amount of gas which is not pumped out leaks into the drilling site space to cause overrun is prevented;
4. a guide plate is arranged below a slag inlet in a box body of the gas-slag separation device, the guide plate is obliquely arranged, the lowest side of the guide plate is in contact with the inner bottom surface of the box body, the two oblique sides are respectively in contact with two opposite inner side surfaces in the box body, a slag discharge port is arranged on one inner side surface, and a communication hole is arranged on the other inner side surface, so that the guide plate guides water slag falling into the bottom surface of the box body from the slag inlet to flow to the slag discharge port, and the phenomenon that the water slag is blocked when the slag inlet is not timely discharged is prevented, and the buffering effect of the whole device is influenced;
5. the side surface of the storage box is provided with a baffle fixing device for fixing the movable baffle, and the telescopic bag is stored in the storage box when not in use, and the movable baffle is fixed by the baffle fixing device, so that the telescopic bag is convenient to store;
6. the buffer connecting pipe adopts a steel wire hose, the diameter of the buffer connecting pipe is 108mm, and the length of the buffer connecting pipe is more than or equal to three meters, so that the buffer space is increased, and the speed and the kinetic energy of sprayed air and water slag are reduced;
7. valves are arranged on the first connecting pipe, the second connecting pipe and the third connecting pipe, so that the connection and the disconnection of the connecting pipes can be controlled, the whole extraction process can be controlled conveniently, and the first connecting pipe, the second connecting pipe and the third connecting pipe are all steel wire hoses, so that the performance strength is better;
8. the telescopic bag adopts rubber bags, has better expansion and contraction performance, and is in a contracted state under the negative pressure effect of the drainage pipeline when the gas emission amount is not more than the drainage amount of the mine drainage pipeline during normal drilling construction and weak spraying hole; when the strong spray hole occurs, the gas spray amount exceeds the drainage amount of a mine drainage pipeline, the rubber capsule is at positive pressure, and the sprayed gas flows into the rubber capsule to expand and enlarge the volume; after the strong spray hole is finished, the rubber bag is converted into negative pressure to automatically shrink again, and the volume expansion size of the rubber bag can be adaptively changed according to the intensity of the spray hole (the quantity of sprayed gas), so that the problem that the capacity of the blowout preventer effectively leads to gas overrun when the strong spray hole is formed can be effectively solved.
Drawings
FIG. 1 is a schematic diagram of a first type of anti-spray orifice device according to the prior art;
FIG. 2 is a schematic diagram of a second type of anti-spray orifice device according to the prior art;
FIG. 3 is a schematic diagram of an embodiment of a device for adaptive multi-stage buffering of gas drainage holes;
FIG. 4 is a schematic diagram of a structure of an orifice blowout preventer in an embodiment of a self-adaptive multi-stage buffering blowout preventer for gas extraction drillings;
FIG. 5 is a schematic diagram of the connection between the main body and the casing of the orifice blowout preventer in an embodiment of the orifice adaptive multi-stage buffering blowout preventer for gas extraction drilling;
FIG. 6 is a dimension drawing of an orifice blowout preventer in an embodiment of a self-adaptive multi-stage buffering blowout preventer for gas extraction drillings;
FIG. 7 is a schematic diagram of a structure of a telescopic bag of a gas-slag separation device in an embodiment of a self-adaptive multi-stage buffering anti-spraying device for gas extraction drilling spraying holes;
FIG. 8 is an enlarged view of FIG. 3 at A;
fig. 9 is an enlarged view at B in fig. 7;
fig. 10 is a schematic structural diagram of an expansion state of a bellows in an embodiment of a device for adaptive multi-stage buffering and anti-spraying of gas extraction holes according to the present invention.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the gas-slag separation device comprises a hole blowout preventer 1, a gas-slag separation device 2, a connecting hose 3, a pumping pipeline 4, a flange 5, a sleeve 6, a coal seam 7, a drill site space 8, a drill rod 9, a main body 101, a first pumping hole 102, a slag hole 103, a first connecting pipe 104, a buffer connecting pipe 105, a box 201, a slag inlet 202, a second pumping hole 203, a second connecting pipe 204, a storage box 205, a slag hole 206, a guide plate 207, a baffle 208, a movable baffle 209, a telescopic bag 2010, a baffle fixing device 2011, a third pumping hole 2012, a third connecting pipe 2013, a valve 2014, a communication hole 2015, a rubber layer 2081, a second hinge 2082, an L-shaped fixing rod 20111, an L-shaped movable rod 20112 and a movable rod 20113.
In the description of the present application, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" means two or more, unless specified or indicated otherwise; the terms "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In the description of the present specification, it should be understood that the terms "upper," "lower," "left," "right," and the like in the embodiments of the present application are described in terms of angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in the context of a description, it will be understood that when an element is referred to as being "on," "under," "left" or "right" another element, it can be directly connected to the other element or intervening elements may be present.
An example is substantially as shown in figure 3: a gas extraction drilling orifice self-adaptive multi-stage buffering orifice-preventing device comprises: an orifice blowout preventer 1 and a gas-slag separator 2; the orifice blowout preventer 1, the gas-slag separator 2 and the extraction pipeline 4 are mutually communicated, and as shown in fig. 2, the orifice blowout preventer is mutually communicated through a connecting hose 3, and in this scheme, the connecting hose 3 is divided into: a first connection pipe 104, a buffer connection pipe 105, a second connection pipe 204, and a third connection pipe 2013;
a sleeve 6 for inserting a coal seam 7 is arranged on the orifice blowout preventer 1;
specifically, the orifice blowout preventer 1 includes: a main body 101; the sleeve 6 is arranged on one side surface of the main body 101 and is connected with the main body 101 through the flange 5; the main body 101 is symmetrically provided with a first extraction opening 102 and a slag outlet 103; the first extraction opening 102 is communicated with the extraction pipeline 4 through a first connecting pipe 104; the slag outlet 103 is communicated with the gas-slag separation device 2 through a buffer connection pipe 105.
In this embodiment, as shown in fig. 4, 5 and 6, the orifice preventing device is made of metal pipes with different diameters, the pipe with the diameter of 225mm and the length of 350mm is used as the main body 101, two ends of the orifice preventing device are plugged, a round hole with the diameter of 94mm (which can be adjusted according to the diameter of a drill bit) is formed at one end, a pipe body with the corresponding diameter is welded at the round hole, a flange 5 is welded at one non-welded end of the pipe body, a flange 5 is welded at one end of the sleeve 6, the main body 101 and the sleeve 6 are connected through the flange 5, a round hole is formed at the other end of the main body 101, the diameter of the orifice preventing device is larger than the diameter of the drill pipe 9, a first extraction opening 102 with the diameter of 50mm and a slag hole 103 with the diameter of 108mm are symmetrically formed at the center outside of the main body 101, the extraction opening is connected with the extraction pipeline 4 through a first connecting pipe 104, and the first connecting pipe 104 adopts a steel wire hose.
The orifice blowout preventer 1 and the gas-slag separator 2 are communicated through the buffer connecting pipe 105, specifically, the buffer connecting pipe 105 adopts a steel wire hose, the diameter of the buffer connecting pipe 105 is 108mm, and the length is greater than or equal to three meters, so that the buffer space is increased, the speed and the kinetic energy of the ejected gas-water slag are reduced, and the length is three meters in the embodiment.
A slag discharge port 206 is arranged at the bottom of one side surface of the gas-slag separation device 2, and a baffle 208 is rotatably connected at the slag discharge port 206 on the outer side surface of the gas-slag separation device 2; the other side face of the gas-slag separation device 2 is provided with a storage box 205, one end, far away from the gas-slag separation device 2, of the storage box 205 is provided with a movable baffle 209 in rotary connection, in the embodiment, the movable baffle 209 is in rotary connection with the storage box 205 through a first hinge, the first hinge is arranged on the bottom face of the storage box 205 and the outer surface of the movable baffle 209, a telescopic bag 2010 is arranged in the storage box 205, and the telescopic bag 2010 is communicated with the gas-slag separation device 2 through a communication hole 2015; the orifice blowout preventer 1, the gas-slag separator 2 and the telescopic bag 2010 are all communicated with the extraction pipeline 4.
Specifically, the gas-slag separation device 2, as shown in fig. 7, includes: a case 201;
the top surface of the box body 201 is provided with a slag inlet 202 and a second extraction opening 203, wherein the slag inlet 202 is connected with the buffer connecting pipe 105, and the second extraction opening 203 is communicated with the extraction pipeline 4 through a second connecting pipe 204;
the containing box 205 is arranged on one side of the box 201, and the slag discharging port 206 is arranged on the other side of the box 201 and is positioned at the bottom of the side surface;
a deflector 207 is arranged below the slag inlet 202 in the box 201, the deflector 207 is obliquely arranged, the lowest side edge of the deflector 207 is contacted with the inner bottom surface of the box 201, the two oblique side edges are respectively contacted with two opposite inner side surfaces in the box 201, a slag discharge port 206 is arranged on one inner side surface, a communication hole 2015 is arranged on the other inner side surface, the highest side edge of the deflector 207 is contacted with one inner side surface (the inner side surfaces clamped by the two opposite inner side surfaces) of the box 201, and any side edge is contacted with the inner side surface of the box 201 by welding and fixing;
the slag discharge port 206 on the outer side surface of the box 201 is rotationally connected with a baffle 208 for shielding the slag discharge port 206, wherein the baffle 208 is divided into two layers, as shown in fig. 8, the outer layer is a metal layer, the inner layer is a rubber layer 2081, the outer layer is generally an iron plate, in the embodiment, the box 201 is connected with the box 201 through a second hinge 2082, one of two blades of the second hinge 2082 is connected with the outer side surface of the box 201 and is positioned above the slag discharge port 206, and the other blade is connected with the rubber layer 2081 as an iron plate; the side surface provided with the communication hole 2015 is fixedly connected with one side surface of the storage box 205, the embodiment adopts welding, the opposite side surface is provided with a movable baffle 209 which is rotationally connected, the embodiment adopts hinge installation, a telescopic bag 2010 is arranged in the storage box 205, and the telescopic bag 2010 is communicated with the box 201 through the arranged communication hole 2015; the telescopic bag 2010 adopts rubber capsules with the strength of 2-2.5 MPa, and in other embodiments, the telescopic bag 2010 can also adopt plastic air bags;
a baffle fixing device 2011 is arranged on the side surface of the storage box 205; in this embodiment, two baffle fixing devices 2011 are disposed on two sides of the storage box 205, the two baffle fixing devices 2011 are symmetrical and have the same structure, and fig. 8 shows only one baffle fixing device 2011 disposed on one side;
baffle fixing device 2011 for fixing movable baffle 209, as shown in fig. 9, includes: an L-shaped fixed lever 20111 and an L-shaped movable lever 20112;
one end face of the L-shaped fixing rod 20111 is fixedly connected with the side face of the storage box 205, the other end of the L-shaped fixing rod 20111 faces upwards, and the L-shaped fixing rod 20111 is vertically arranged;
one end surface of the L-shaped movable rod 20112 is fixedly connected with the outer surface of the movable baffle 209, the L-shaped movable rod 20112 is horizontally arranged, one end of the L-shaped movable rod 20112 is in contact with the L-shaped fixed rod 20111 and is positioned above the horizontal rod part of the L-shaped fixed rod 20111, the movable rod 20113 is rotatably connected with the other end surface of the L-shaped movable rod 20112, under the action of no external force, the movable rod 20113 is vertically downward, so that the movable baffle 209 is fixed, when the telescopic bag 2010 is expanded, a horizontal outward (right) force is applied to the movable baffle 209, the movable rod 20113 is upwards rotated to be leveled with the L-shaped movable rod 20112, the movable baffle 209 is outwards turned, and therefore the telescopic bag 2010 is partially expanded out of the storage box 205; in the embodiment, the movable rod 20113 and the L-shaped movable rod 20112 are hinged to one contact end of the L-shaped fixed rod 20111; a third air extraction opening 2012 is formed on a side surface of the telescopic bag 2010, which is in contact with the movable baffle 209, and the third air extraction opening 2012 is communicated with the extraction pipeline 4 through a third connecting pipe 2013. In addition, valves 2014 are provided on the first, second and third connection pipes 104, 204 and 2013 for controlling the conduction and closure of the first, second and third connection pipes 104, 204 and 2013, respectively.
In this embodiment, as shown in fig. 6 (the unit of reference is mm in fig. 6), the gas-slag separation device 2 includes: the device comprises a box body 201, a slag inlet 202, a slag outlet 206, a guide plate 207, an extraction opening, a communication hole 2015 and a storage box 205, wherein two round holes are formed in the diagonal position of the top surface of the box body 201, a pipe body with the diameter of 108mm is the slag inlet 202, is connected with the slag outlet 103 of the orifice blowout preventer 1 through a steel wire hose (a buffer connecting pipe 105), is a second extraction opening 203, and is connected with an extraction pipeline 4 through a steel wire hose (a second connecting pipe 204);
a guide plate 207 is arranged below a slag inlet 202 in the box 201, slag discharging holes 206 and a communication hole 2015 are formed in the box 201 at two sides of the guide plate 207, the slag discharging holes 206 are formed in the bottom of the side face of the box 201, water slag is discharged conveniently, a baffle 208 is arranged on the outer side of the box 201 by a hinge, the daily slag discharging holes 206 are guaranteed not to leak air, the communication hole 2015 is formed in the upper portion of the side face of the box 201, gas migration is facilitated, a containing box 205 is arranged on one side of the box 201 of the communication hole 2015, a movable baffle 209 is arranged at one end of the containing box 205, and the movable baffle is fixed with the containing box 205 through a baffle fixing device 2011;
the rubber capsule is fixed on one side surface of the box body 201 through a screw, is placed in the storage box 205, is communicated with the box body 201 through a communication hole 2015, is provided with a third extraction opening 2012 above the tail part of the rubber capsule, and is connected with the extraction pipeline 4 through a steel wire hose (a third connecting pipe 2013);
the box 201 is cuboid, the rubber bag is in a folding state and is nearly cylindrical when inflated to the maximum volume, and all the extraction openings and the slag outlet 103 are cylindrical; the rubber bag is in a contracted state initially, the gas quantity sprayed out in the construction process is large, the formed pressure is larger than the extraction negative pressure, the rubber bag is expanded, as shown in fig. 10, the sprayed excessive gas can be contained, after the spray holes are finished, the rubber bag is gradually contracted, and a certain external force is applied to restore to the initial state.
The specific implementation process is as follows: the device is arranged in a drilling site space 8, and during construction, a hole with the aperture larger than d1 and the depth not smaller than L is firstly constructed in a coal bed 7 or a rock wall by using a drilling machine, wherein the range of d1 is 75-133 mm, the range of L is 1000-2000 mm, the specific value is determined according to the actual requirement, and d1=108 mm and L=1000 mm in the embodiment; cement slurry or Marika is used for filling a gap between the sleeve 6 and the hole wall after the sleeve 6 is inserted into the hole, cement slurry is adopted in the embodiment, after the sleeve 6 is stabilized, the main body 101 of the hole blowout preventer 1 is fixedly connected through the flange 5, the connection of the hole blowout preventer 1, the gas-slag separation box, the telescopic bag 2010 and extraction management is completed through a steel wire hose, then a drilling machine is operated to enable a drill rod 9 to penetrate through the hole blowout preventer 1 to enter a coal seam 7, a valve 2014 and a baffle fixing device 2011 on the steel wire hose connected with the extraction pipeline 4 are opened, and construction is started after the inside of the device is in a negative pressure state;
in the construction process, water slag flows into the gas-slag separation device 2 from the slag hole 103 of the orifice hole device, a part of gas flushed out from the drill hole is pumped away by the extraction pipeline 4 through the first connecting pipe 104, and the other part of gas enters the gas-slag separation box and the rubber bag along with the water slag and is pumped away by the extraction pipeline 4 through the second connecting pipe 204 and the third connecting pipe 2013, at the moment, the rubber bag is in a folded state, when the water slag in the box 201 is less, the slag hole 206 is shielded by the baffle 208 of the internal negative pressure slag hole 206, slag is not discharged, when the water slag is accumulated to exceed the slag hole 206, the negative pressure effect disappears, the baffle 208 is jacked up by the action of the water slag, slag is discharged, and the water slag is circularly discharged until the construction is finished, the valve 2014 on the extraction pipeline 4 is kept in an opened state until the drill withdrawal is finished, the orifice is immediately plugged and is connected with the extraction system connected with the extraction pipeline 4;
compared with the traditional anti-spraying hole device with fixed volume, as shown in fig. 1 and 2, the spraying hole phenomenon occurs in the construction process, the sprayed gas enters the anti-spraying hole device, the gas-slag separation box and the rubber bag, if the sprayed gas quantity is smaller, the rubber bag cannot expand and still is in a folded state, if the sprayed gas quantity is larger and the formed pressure is larger than the negative extraction pressure and the tension of the rubber bag, the rubber bag expands and accommodates the sprayed excessive gas, the problem that the capacity of the anti-spraying device effectively leads to gas overrun when the strong spraying hole can be effectively solved, and after the excessive gas is pumped by the extraction pipeline 4, the rubber bag contracts and recovers to a restoration state and can be accommodated in the accommodating box 205.
The foregoing is merely an embodiment of the present invention, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application day or before the priority date of the present invention, and can know all the prior art in the field, and have the capability of applying the conventional experimental means before the date, so that a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present application, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (10)
1. The utility model provides a gas drainage drilling orifice self-adaptation multistage buffering prevents orifice device which characterized in that includes: an orifice blowout preventer and a gas-slag separator;
the orifice blowout preventer and the gas-slag separator are communicated through a buffer connecting pipe;
the orifice blowout preventer is provided with a sleeve pipe for being inserted into the coal seam;
a slag discharging port is arranged at the bottom of one side surface of the gas-slag separation device, and a baffle is rotationally connected to the slag discharging port on the outer side surface of the gas-slag separation device; the other side surface of the gas-slag separation device is provided with a storage box, one end of the storage box, which is far away from the gas-slag separation device, is provided with a movable baffle plate in rotary connection, and a telescopic bag is arranged in the storage box and is communicated with the gas-slag separation device through a communication hole;
the orifice blowout preventer, the gas-slag separator and the telescopic bag are communicated with the extraction pipeline.
2. The gas extraction borehole orifice adaptive multi-stage buffering blowout preventer of claim 1, wherein the orifice blowout preventer comprises: a main body;
the sleeve is arranged on one side surface of the main body; the main body is symmetrically provided with a first extraction hole and a slag hole; the first extraction opening is communicated with the extraction pipeline through a first connecting pipe; the slag outlet is communicated with the gas-slag separation device through a buffer connecting pipe.
3. The gas extraction drilling orifice adaptive multi-stage buffering orifice prevention device of claim 2, wherein the gas-slag separation device comprises: a case;
the top surface of the box body is provided with a slag inlet and a second extraction opening; the slag inlet is connected with the buffer connecting pipe; the second extraction opening is communicated with the extraction pipeline through a second connecting pipe;
the containing box is arranged on one side of the box body, and the slag discharging port is arranged on the other side of the box body.
4. The self-adaptive multi-stage buffering anti-spraying hole device for gas extraction drilling spraying holes according to claim 3, wherein a guide plate is installed below a slag inlet in the box body, the guide plate is obliquely arranged, the lowest side of the guide plate is in contact with the bottom surface in the box body, two oblique sides are respectively in contact with two opposite inner side surfaces in the box body, a slag discharge hole is formed in one inner side surface, and a communication hole is formed in the other inner side surface.
5. The self-adaptive multi-stage buffering anti-spraying hole device for gas extraction drilling spraying holes of claim 1, wherein a baffle fixing device is arranged on the side surface of the storage box;
the baffle fixing device is used for fixing the movable baffle and comprises: an L-shaped fixed rod and an L-shaped movable rod;
one end face of the L-shaped fixing rod is fixedly connected with the side face of the storage box, the other end of the L-shaped fixing rod faces upwards, and the L-shaped fixing rod is vertically arranged;
one end face of the L-shaped movable rod is fixedly connected with the outer surface of the movable baffle, the L-shaped movable rod is horizontally arranged, one end of the L-shaped movable rod is in contact with the L-shaped fixed rod and is positioned above the horizontal rod part of the L-shaped fixed rod, the movable rod is connected with the other end face of the L-shaped movable rod in a rotating mode, and the movable rod is vertically downward under the action of no external force.
6. The adaptive multi-stage buffering blowout prevention device for gas extraction drilling holes of claim 1, wherein the rotational connection is mounted by a hinge.
7. The self-adaptive multistage buffering anti-spraying hole device for gas extraction drilling spraying holes of claim 1, wherein the buffering connecting pipe is a steel wire hose, the diameter of the buffering connecting pipe is 108mm, and the length of the buffering connecting pipe is more than or equal to three meters.
8. The self-adaptive multi-stage buffering anti-spraying hole device for gas extraction drilling spraying holes according to claim 3, wherein a third air extraction opening is formed in one side surface of the telescopic bag, which is in contact with the movable baffle plate, and the third air extraction opening is communicated with the extraction pipeline through a three-connection pipe.
9. The adaptive multi-stage buffering blowout prevention device for gas extraction drilling holes of claim 8, wherein valves are arranged on the first connecting pipe, the second connecting pipe and the third connecting pipe, and steel wire hoses are adopted for the first connecting pipe, the second connecting pipe and the third connecting pipe.
10. The gas extraction drilling orifice self-adaptive multi-stage buffering orifice prevention device according to claim 1, wherein the telescopic bag is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310288863.2A CN116291689A (en) | 2023-03-22 | 2023-03-22 | Self-adaptive multistage buffering anti-spraying hole device for gas extraction drilling spraying holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310288863.2A CN116291689A (en) | 2023-03-22 | 2023-03-22 | Self-adaptive multistage buffering anti-spraying hole device for gas extraction drilling spraying holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116291689A true CN116291689A (en) | 2023-06-23 |
Family
ID=86790180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310288863.2A Pending CN116291689A (en) | 2023-03-22 | 2023-03-22 | Self-adaptive multistage buffering anti-spraying hole device for gas extraction drilling spraying holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116291689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116696272A (en) * | 2023-07-13 | 2023-09-05 | 河南省许昌新龙矿业有限责任公司 | Self-display blowout preventer for continuous closed water pumping level of buffer control spray hole |
-
2023
- 2023-03-22 CN CN202310288863.2A patent/CN116291689A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116696272A (en) * | 2023-07-13 | 2023-09-05 | 河南省许昌新龙矿业有限责任公司 | Self-display blowout preventer for continuous closed water pumping level of buffer control spray hole |
| CN116696272B (en) * | 2023-07-13 | 2024-01-19 | 河南省许昌新龙矿业有限责任公司 | Self-display blowout preventer for continuous closed water pumping level of buffer control spray hole |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019196503A1 (en) | Drilling machine power-based downhole rapid slotting directional hydraulic fracturing system and method | |
| RU2745263C1 (en) | Combined well sealing device performing underground blasting for rooting and water injection in deep wells | |
| CN116291689A (en) | Self-adaptive multistage buffering anti-spraying hole device for gas extraction drilling spraying holes | |
| CN110821395A (en) | Sealed buffering of borehole construction operation prevents transfinite protection system in pit | |
| CN219570142U (en) | Self-adaptive multistage buffering anti-spraying hole device for gas extraction drilling spraying holes | |
| CN215169870U (en) | A water installation is prevented gushing in drill way for horizontal directional drilling engineering geological survey | |
| KR102286915B1 (en) | Blasting method of rock | |
| CN210239638U (en) | Pressurized hole sealing device for coal mine nearly horizontal fracturing drilling | |
| CN212671678U (en) | Leakage stopping tool | |
| CN210858602U (en) | Novel pressure-bearing sleeve for water detecting and draining orifice | |
| CN105298443B (en) | Oil pipe blowout, gaslift and pressure break connection make method under oil pipe float valve and insufficient balance well completion | |
| CN209067158U (en) | Bag type paste injection hole sealing device | |
| CN215632881U (en) | Gas pressure reduction blowout prevention pre-control system | |
| CN116378587A (en) | Orifice blowout prevention system for hydraulic directional drilling of crushed soft coal layer and construction method | |
| CN207144998U (en) | Mining drilling gas buffers release of pressure drainage device | |
| CN206896644U (en) | A kind of spraying system of fire fighting | |
| CN205225174U (en) | Grouting device | |
| US5191940A (en) | Oil/gas separator for installation at burning wells | |
| CN213330997U (en) | Drill rod sealing unit for blowout preventer | |
| CN105507937B (en) | A kind of water jet coal seam cutting spray orifice processing unit | |
| CN204920864U (en) | Drilling fluid gas separator | |
| CN110023709A (en) | The equipment for supporting destructor | |
| CN203130027U (en) | Safety protection and dust catching device for drilling construction | |
| CN114046138B (en) | Device for discharging mud and rock debris on surface layer and use method | |
| CN218581646U (en) | Gas and dust prevention device for gas extraction drilling construction orifice |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |