Blowout prevention device

Abstract

The utility model relates to the technical field of coal mine drilling blowout prevention devices, in particular to a blowout prevention device which comprises a blowout prevention barrel body, one end of the blowout prevention barrel body is connected with an adapter, the other end of the blowout prevention barrel body is connected with a variable-diameter compensation connecting end, and a nylon air bag workpiece is arranged on the variable-diameter compensation connecting end. The blowout prevention barrel body can coaxially penetrate through a drill rod, and the blowout prevention barrel body is further provided with a positioning mechanism and a baffle device in a matched mode. During drilling extraction, gas can be effectively prevented from being sprayed out, the accident occurrence probability is reduced, meanwhile, the service life of the device can be effectively prolonged, and accidents of hole sealing operation personnel casualties and equipment damage caused by spraying holes can be effectively eradicated when a drill rod and the blowout prevention barrel body are extracted.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine drilling blowout prevention devices, in particular to a blowout prevention device. Background Art

[0002] Drilling and extracting gas is a fundamental measure to control gas disasters in coal mine production. During the coal mine drilling process, gas eruption may occur due to the combined effects of ground stress, gas pressure and the physical and mechanical properties of coal rock. This not only poses a threat to the safety of workers, but may also affect work efficiency and environmental protection. Therefore, the installation of anti-gas eruption devices has become an indispensable part of coal mine drilling operations.

[0003] Existing blowout prevention devices lack a structure that can effectively deal with external vibrations, which can easily affect the service life of the device. In addition, there is a lack of effective devices to deal with subsequent drill rod withdrawal operations. That is, when the drill rod is pulled out, if there is a hole collapse and accumulation of drill cuttings in the hole, it is easy for a drill hole blowout to occur, and coal and rock particles will be ejected from the borehole at high speed, injuring the drilling and sealing operators.

[0004] Therefore, we propose a blowout prevention device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a blowout prevention device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A blowout preventer device includes a blowout preventer barrel body, one end of the blowout preventer barrel body is connected to an adapter, the other end of the blowout preventer barrel body is connected to a reducer compensation connection end, a nylon airbag workpiece is provided on the reducer compensation connection end, the blowout preventer barrel body can coaxially pass through the drill rod, and the blowout preventer barrel body is also matched with a positioning mechanism and a baffle device.

[0008] Preferably, the nylon airbag workpiece further includes an inflatable annular airbag, which is coaxially arranged at the port of the blowout preventer body.

[0009] Preferably, the drill rod passes through the middle of the variable-diameter compensation connecting end and the adapter, the drill rod and the annular airbag are coaxially corresponding, and there is a gap between the drill rod and the inner wall of the annular airbag.

[0010] Preferably, the positioning mechanism includes two symmetrically arranged side plates, the blowout preventer body can be laterally arranged between the two side plates, and two clamping frames for abutting against the blowout preventer body are provided on the two side plates. A threaded rod is provided on the side plates for pushing the clamping frames to move, and the threaded rod passes through the side plates and is rotatably connected to the clamping frames. Two polished rods that slide through the side plates are symmetrically fixed to the sides of the clamping frames.

[0011] Preferably, the lower ends of the two side panels are fixedly connected by two connecting rods, and an open barrel body is detachably mounted in the middle of the two connecting rods.

[0012] Preferably, support plates are fixed to the side edges of the two side panels, and a number of circular holes are evenly provided on the support plates, and the plurality of circular holes can be matched to insert anchor nails, and the bottoms of the two side panels are detachably connected to a liftable support frame.

[0013] Preferably, the baffle device includes two rotating plates, which are rotatably connected to the two side plates respectively, and the rotating plates are located between the two clamping frames on the side plates, and the side of the rotating plate close to the side plate is fixedly connected to the side plate by a spring, and the two rotating plates can be set end to end, and the ends against which the two rotating plates are abutted are provided with semicircular notches, and the tops of the opposite sides of the two rotating plates are horizontally fixed with arc plates, and the two arc plates are offset up and down and correspond to each other, and the side edges of the sprayproof barrel body are matched with two sliding grooves that abut against the edges of the two arc plates, and the opposite sides of the two rotating plates are fixed with arc baffles, the two arc baffles can abut and merge, and the edges of the two arc baffles can be magnetically connected.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model discloses the utility model discloses a device can effectively prevent gas from blowing out, reduces the probability of accidents, and further effectively reduces the concentration of gas in the air, reduces the risk of explosion, and provides a safer working environment for operators. At the same time, by arranging a variable-diameter compensation connection end, it can reduce the influence of external vibration, play a role of shock absorption compensation, and effectively improve the service life of the device. The annular airbag is inflated to hold the drill rod tightly, achieving a good sealing effect. At the same time, it can effectively prevent the sudden blowout in the hole caused by hole collapse and hole blockage when the drill rod and the blowout preventer body are withdrawn, which may cause casualties of the sealing operators and damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0017] Figure 1 It is a front view of the utility model;

[0018] Figure 2 This is a cross-sectional view of the blowout-proof barrel body of the present utility model;

[0019] Figure 3 This is the first front view of the utility model;

[0020] Figure 4 This is the second front view of the utility model;

[0021] Figure 5 This is a front view of the curved plate of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the two rotating plates of the present invention after being butted end to end;

[0023] Figure 7 This is a schematic structural diagram of the arc-shaped baffle of the present utility model.

[0024] In the figure: 1. Blowout proof barrel body; 2. Adapter; 3. Reducer compensation connection end; 4. Nylon airbag workpiece; 5. Annular airbag; 6. Drill rod; 7. Side plate; 8. Clamping frame; 9. Threaded rod; 10. Polished rod; 11. Connecting rod; 12. Open barrel body; 13. Support plate; 14. Rotating plate; 15. Spring; 16. Arc plate; 17. Slide; 18. Arc baffle; 19. Liftable support frame. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] Reference Figure 1-7 A blowout preventer device includes a blowout preventer body 1. The blowout preventer body 1 is cylindrical and made of carbon fiber, which has the advantage of high strength. One end of the blowout preventer body 1 is connected to an adapter 2, which is used to correspond to the drill hole. The adapter 2 is inserted into the drill hole and can contact the inner wall of the drill hole to achieve a sealing effect. The other end of the blowout preventer body 1 is connected to a variable diameter compensation connection end 3, on which a nylon airbag workpiece 4 is provided. The blowout preventer body 1 can coaxially pass through the drill rod 6. The blowout preventer body 1 is also matched with a positioning mechanism and a baffle device.

[0028] For the above example, those skilled in the art should know that when implementing the above technical solution, the blowout preventer body 1 is further provided with an upper interface and a lower interface, which are used for exhaust and drainage operations respectively.

[0029] For the above example, those skilled in the art should know that when implementing the above technical solution, the drill rod 6 is a rod used for drilling holes in an existing drilling rig.

[0030] As a technical optimization solution of the present invention, the nylon airbag workpiece 4 further includes an inflatable annular airbag 5 , which is coaxially arranged at the port of the blowout preventer body 1 .

[0031] For the above example, those skilled in the art should know that when implementing the above technical solution, the nylon airbag workpiece 4 is provided with an interface that can be connected to the annular airbag 5 to realize the inflation operation of the annular airbag 5.

[0032] As a technical optimization solution of the present invention, the drill rod 6 passes through the middle of the variable diameter compensation connection end 3 and the adapter 2, and an enlarged gap exists between the drill rod 6 and the inner wall of the adapter 2. The drill rod 6 corresponds coaxially to the annular airbag 5, and there is a gap between the drill rod 6 and the inner wall of the annular airbag 5, and the gap is between 2 and 5 mm. When the drill rod 6 passes through the variable diameter compensation connection end 3, the variable diameter compensation connection end 3 cooperates with the annular airbag 5 to reduce the impact of external vibrations and play a role in shock absorption compensation. After the drill rod 6 is drilled and gas extraction is carried out, the annular airbag 5 is inflated, which can hold the drill rod 6 tightly and achieve a good sealing effect.

[0033] As a technical optimization solution of the present invention, the positioning mechanism includes two symmetrically arranged side panels 7. The blowout barrel body 1 can be horizontally arranged between the two side panels 7. Two clamping frames 8 for abutting against the blowout barrel body 1 are provided on the two side panels 7. That is, the two side panels 7 can clamp and fix the blowout barrel body 1 between them through four clamping frames 8 or only limit the position, and the blowout barrel body 1 can still move. A threaded rod 9 for pushing the clamping frame 8 to move is provided on the side panel 7. The threaded rod 9 passes through the side panel 7 and is rotatably connected to the clamping frame 8. Two light rods 10 that slide through the side panels 7 are symmetrically fixed on the side of the clamping frame 8. The light rod 10 is used to stabilize the horizontal movement of the clamping frame 8. Rotating the threaded rod 9 can be used to push the clamping frame 8 to move. By controlling the movement of the clamping frame 8, the restriction of the blowout barrel body 1 can be achieved.

[0034] As a technical optimization solution of the present invention, the lower ends of the two side panels 7 are fixedly connected by two connecting rods 11, and the middle parts of the two connecting rods 11 are detachably mounted with an open barrel 12. The two side panels 7 can be formed into a whole through the two connecting rods 11.

[0035] For the above example, those skilled in the art should know that when implementing the above technical solution, the bottom of the open barrel body 12 can be connected to a pipeline to achieve the effect of discharging materials.

[0036] As a technical optimization solution of the present invention, support plates 13 are fixed to the side edges of both side panels 7. These support plates 13 are uniformly provided with a number of circular holes, i.e., evenly spaced. These holes are suitable for inserting anchors. A removable support frame 19 is attached to the bottom of each side panel 7. This support frame 19 allows for height adjustment of the entire structure formed by the two side panels 7. The holes in the support plates 13 accommodate anchors, which are then driven into the rock wall, securing the entire structure formed by the two side panels 7 to the rock wall. The anchors are removable.

[0037] For the above example, those skilled in the art should know that when implementing the above technical solution, the anchor nail can also be replaced with a long rod screw. After the long rod screw passes through the round hole, the long rod screw is drilled into the rock wall by a drill rig, and the long rod screw can be disassembled and removed.

[0038] For the above example, those skilled in the art should know that when implementing the above technical solution, the liftable support frame 19 is a bracket that can be lifted and lowered. The liftable support frame 19 can be adjusted by manually adjusting the telescopic rod to adjust the height, or it can be set to an electric telescopic rod to achieve height adjustment.

[0039] For the above example, those skilled in the art should know that when implementing the above technical solution, the bottom of the liftable support frame 19 can be fixedly connected to the ground through screws, and the liftable support frame 19 can achieve a stable support effect.

[0040] As a technical optimization solution of the present invention, the baffle device includes two rotating plates 14, which are rotatably connected to the two side plates 7 respectively. The rotating plates 14 are located between the two clamping frames 8 on the side plates 7, that is, two upper and lower corresponding clamping frames 8, and the two upper and lower corresponding clamping frames 8 do not affect the rotation of the rotating plates 14. The side of the rotating plate 14 close to the side plate 7 is fixedly connected to the side plate 7 by a spring 15. The two rotating plates 14 can be arranged end-to-end, and the ends of the two rotating plates 14 that are in contact with each other are each provided with a semicircular notch. The two springs 15 can respectively push the two rotating plates 14 to rotate, achieving an end-to-end contact effect of the two rotating plates 14. An arc-shaped plate 16 is horizontally fixed to the top of the opposite side of the two rotating plates 14. The two arc-shaped plates 16 are offset and correspond to each other up and down. The side of the spray-proof barrel body 1 is matched with two slide grooves 17 that abut against the edges of the two arc-shaped plates 16. An arc-shaped baffle 18 is fixed to the opposite side of the two rotating plates 14. The two arc-shaped baffles 18 can abut and merge, and the edges of the two arc-shaped baffles 18 can be magnetically connected. When the blowout preventer body 1 is set at the corresponding position between the two side plates 7, the blowout preventer body 1 can abut against the corresponding two arc-shaped plates 16 through the two slide grooves 17. As the blowout preventer body 1 moves, it can squeeze the two arc-shaped plates 16, and then push the two rotating plates 14, so that the two springs 15 contract, so that the two rotating plates 14 that are abutted end to end are separated. Similarly, when the blowout preventer body 1 is pulled out from between the two side plates 7, the two springs 15 push the two rotating plates 14 to reset, so that the two rotating plates 14 abut end to end, and the two arc-shaped baffles 18 abut and merge. At this time, the semicircular notches at one end of the two rotating plates 14 abutting against each other are merged, and correspond to the two merged arc-shaped baffles 18.

[0041] In the present invention, the working principle of the device is as follows:

[0042] This device is used for drilling and gas extraction construction. When the drill rod 6 passes through the variable-diameter compensation connection end 3, the variable-diameter compensation connection end 3 can reduce the impact of external vibrations and play a role in shock absorption compensation, effectively improving the service life of the device. During the drilling and gas extraction operation, the adapter 2 is inserted into the borehole, can contact the inner wall of the borehole, and achieve a sealing effect, and the upper and lower interfaces provided on the blowout-proof barrel body 1 can be connected to the corresponding external pipes to achieve the effect of gas and water slag drainage, effectively preventing gas from erupting, reducing the probability of accidents, and effectively reducing the concentration of gas in the air, reducing the risk of explosion, providing a safer working environment for operators, improving work efficiency, and avoiding the interruption of operations due to gas eruption.

[0043] At the same time, it can also be used for operations after the drill rod 6 and the blowout preventer body 1 are pulled out, that is, a combination of two side plates 7 and the blowout preventer body 1 is set. After drilling and extraction, when the drill rod 6 and the blowout preventer body 1 are withdrawn, if there is a hole collapse and accumulation of drill slag in the hole, it is easy to cause a drilling blowout, and coal and rock particles are ejected from the borehole at high speed, injuring the drilling and sealing workers. At this time, through the combination of the two side plates 7 and the blowout preventer body 1, when the blowout preventer body 1 is pulled out, the corresponding two springs 15 push the two rotating plates 14 to reset, so that the two rotating plates 14 are abutted end to end, and the two arc-shaped baffles 18 are abutted and merged. At this time, the two rotating plates The semicircular notches at one end of the rotating plates 14 are merged and correspond to the two merged arc-shaped baffles 18. At this time, the two rotating plates 14 are in a stable sharp angle corresponding to the drill hole. When the drilling blowout hole is ejected, coal and rock particles are first offset by colliding with the two rotating plates 14, and then collide with the two merged arc-shaped baffles 18 through the two merged semicircular notches. The arc-shaped baffles 18 change direction and fall into the open barrel body 12 below. The open barrel body 12 can then carry out subsequent discharge operations. The use of this device can effectively prevent the occurrence of sudden blowouts in the hole due to hole collapse or blockage when the drill rod 6 and the blowout preventer body 1 are withdrawn, which may cause casualties to the workers in the hole sealing operation and damage to the equipment.

[0044] At the same time, the plurality of circular holes on the support plate 13 of the device can be inserted with anchors, which can be driven into the rock wall, so that the whole formed by the two side panels 7 is fixedly connected to the rock wall. The anchors can be removed, and the whole formed by the two side panels 7 can be fixed to the vertical rock wall or to the horizontal top rock wall. At the same time, when the two side panels 7 correspond to the vertical rock wall, a liftable support frame 19 can also be set to position, support and fix them. The liftable support frame 19 can also realize the lifting and adjusting of the two side panels 7 as a whole.

[0045] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A blowout prevention device, comprising a blowout prevention barrel body (1), characterized in that: One end of the blowout barrel body (1) is connected to an adapter (2), and the other end of the blowout barrel body (1) is connected to a variable diameter compensation connection end (3). A nylon airbag workpiece (4) is provided on the variable diameter compensation connection end (3). The blowout barrel body (1) can coaxially pass through a drill rod (6). The blowout barrel body (1) is also matched with a positioning mechanism and a baffle device.

2. A blowout prevention device according to claim 1, characterized in that: The nylon airbag workpiece (4) further comprises an inflatable annular airbag (5), which is coaxially arranged at the port of the blowout preventer body (1).

3. A blowout prevention device according to claim 2, characterized in that: The drill rod (6) passes through the middle of the variable diameter compensation connection end (3) and the adapter (2), the drill rod (6) and the annular airbag (5) are coaxially corresponding, and a gap exists between the drill rod (6) and the inner wall of the annular airbag (5).

4. A blowout prevention device according to claim 1, characterized in that: The positioning mechanism comprises two symmetrically arranged side plates (7), the blowout barrel body (1) can be transversely arranged between the two side plates (7), two clamping frames (8) for abutting against the blowout barrel body (1) are provided on the two side plates (7), a threaded rod (9) for pushing the clamping frame (8) to move is provided on the side plates (7), the threaded rod (9) is threadedly passed through the side plates (7) and is rotatably connected to the clamping frame (8), and two polished rods (10) that slide through the side plates (7) are symmetrically fixed to the sides of the clamping frame (8).

5. A blowout prevention device according to claim 4, characterized in that: The lower ends of the two side plates (7) are fixedly connected via two connecting rods (11), and an open barrel body (12) is detachably mounted in the middle of the two connecting rods (11).

6. A blowout prevention device according to claim 5, characterized in that: The side edges of the two side panels (7) are fixed with support plates (13), and a plurality of circular holes are evenly provided on the support plates (13), and the plurality of circular holes can be matched to insert anchor nails. The bottoms of the two side panels (7) are detachably connected with liftable support frames (19).

7. A blowout prevention device according to claim 6, characterized in that: The baffle device comprises two rotating plates (14), the two rotating plates (14) are rotatably connected to the two side plates (7) respectively, and the rotating plate (14) is located between the two clamping frames (8) on the side plates (7), and the side of the rotating plate (14) close to the side plate (7) is fixedly connected to the side plate (7) by a spring (15), the two rotating plates (14) can be arranged end to end, and the ends of the two rotating plates (14) are provided with semicircular notches, and the tops of the opposite sides of the two rotating plates (14) are horizontally fixed with arc plates (16), the two arc plates (16) are offset and correspond to each other, and the side of the spray-proof barrel body (1) is matched with two sliding grooves (17) that are against the edges of the two arc plates (16), and the opposite sides of the two rotating plates (14) are fixed with arc baffles (18), the two arc baffles (18) can be abutted and merged, and the edges of the two arc baffles (18) can be magnetically connected.

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