Blowout preventer for water exploration and drainage drilling

Abstract

The utility model relates to the technical field of drilling blowout prevention, and provides a water exploration drilling blowout prevention device which comprises a barrel (2) fixedly connected to a water exploration drilling machine body (1), a through groove (3) is formed in the barrel (2), a middle shaft (4) coaxial with the barrel (2) is arranged in the through groove (3), a first blocking mechanism (5) is arranged at one end of the middle shaft (4), and a second blocking mechanism (6) is arranged between the barrel (2) and the middle shaft (4). The closing state of the second blocking mechanism (6) can be changed according to the water flow; a water outlet pipe (7) enabling the through groove (3) to be communicated with the outside is arranged on the barrel body (2), the water outlet pipe (7) is located between the first blocking mechanism (5) and the second blocking mechanism (6), the closing state of the blocking mechanisms can be changed according to the flow of water sprayed out of the water holes, then the water blocking area is changed, and when the water flow is small, water flow can be discharged through the water outlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling blowout prevention, and more specifically, particularly relates to a water exploration and release drilling blowout prevention device. Background Art

[0002] Water exploration drilling rigs are mainly used for gas emission drilling, blasting coal dropping holes and rock drilling for exploring measures to prevent coal and gas outbursts in mining working faces. They can also be used to drill water exploration holes in small tunnel sections. At present, when the water exploration drill is used to drill water exploration holes in coal mines, the soil above the water hole is suddenly drilled open, and the water in the water hole will spray out, which is not only easy to cause damage to the water exploration drill, but also easy to cause injuries to surrounding workers, causing personal and property damage, thereby reducing the safety of water exploration and release operations.

[0003] The patent with announcement number CN216305835U discloses a drilling blowout prevention device for coal mine water exploration and drainage, including a drill barrel, a drilling assembly is arranged in the middle of the inner cavity of the drill barrel, a first buffer mechanism is arranged at the bottom of the inner cavity of the drill barrel, the first buffer mechanism includes a fixed plate and a buffer plate, the fixed plate is fixedly connected to the bottom of the inner cavity of the drill barrel, the buffer plate is arranged below the fixed plate, and a first elastic telescopic member is arranged between the fixed plate and the buffer plate, water storage pipes are symmetrically arranged on both sides of the drill barrel, and a second buffer mechanism is arranged at the top of the inner cavity of the water storage pipe. The utility model can buffer and divert the sprayed water flow by arranging a fixed plate, a buffer plate and a first elastic telescopic member at the bottom of the inner cavity of the drill barrel, and arranging water storage pipes connected to the drill barrel on both sides of the drill barrel, and cooperating with the arrangement of a water blocking plate and a second elastic telescopic member in the water storage pipe, thereby reducing the impact force of the water flow on the drill barrel and the drilling assembly in the drill barrel, thereby improving the safety of the operation. However, the following problems still exist in the blowout prevention device in the prior art and need to be solved:

[0004] 1. If the amount of water sprayed from the water hole is small, it is difficult to compress the two elastic expansion parts, resulting in the water being unable to be discharged from the water outlet pipe;

[0005] 2. If the amount of water sprayed out of the water hole is large, the water flow discharged from the outlet pipe cannot be controlled. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the utility model aims to provide a water exploration and release drilling hole blowout prevention device, which can change the closing state of the blocking mechanism and thus change the water retaining area according to the water flow rate sprayed out of the water hole, and when the water flow rate is small, the water flow can also be discharged from the water outlet pipe.

[0007] A water exploration and release drilling blowout prevention device comprises a cylinder fixedly connected to a water exploration drilling rig body, a through slot being provided in the cylinder, a central axis coaxial with the cylinder being arranged in the through slot, a drill rod on the water exploration drilling rig body passes through the central axis, a first blocking mechanism is arranged at one end of the central axis close to the water exploration drilling rig body, a second blocking mechanism is arranged between the cylinder and the central axis, the second blocking mechanism can change the closing state according to the water flow rate; a water outlet pipe is arranged on the cylinder to connect the through slot with the outside, and the water outlet pipe is located between the first blocking mechanism and the second blocking mechanism.

[0008] Furthermore, the first blocking mechanism includes a baffle plate fixedly connected to the central axis, the outer wall of the baffle plate is in contact with the inner wall of the through slot, a positioning ring is fixedly connected to the inner wall of the through slot, a positioning rod is fixedly connected to the baffle plate and passes through and slides on the positioning ring, and a spring is connected between the baffle plate and the positioning ring.

[0009] Furthermore, the spring is sleeved on the positioning rod.

[0010] Furthermore, when the second blocking mechanism is fully opened, the spring is just in a normal state.

[0011] Furthermore, the second blocking mechanism includes baffles arranged on both sides of the central axis, a movable rod is hinged on the baffle, and a free end of the movable rod is hinged on the central axis.

[0012] Furthermore, a sliding groove is provided on the inner wall of the through groove and the baffle slides in the sliding groove.

[0013] Furthermore, the baffle is provided with an opening on one side close to the central axis, and the opening is semicircular.

[0014] Furthermore, a water hole is provided on the baffle.

[0015] Furthermore, a limiting groove is provided on the inner wall of the slide groove, and a limiting protrusion is provided on the side wall of the baffle plate, and the limiting protrusion slides in the limiting groove.

[0016] Furthermore, a fixing plate is fixedly connected to a side of the cylinder away from the water exploration drilling rig body, and an anchor hole is opened on the fixing plate.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] In the utility model, water sprayed from the water hole enters the through groove and can be directly discharged from the water outlet pipe; if the water flow rate increases, the baffle plate moves close to the positioning ring when impacted by the water flow, the spring is squeezed, and during the movement of the central axis, the second blocking mechanism starts to close; if the water volume is small and the impact force of the water flow is not enough to continue to compress the spring, the second blocking mechanism stops closing and does not affect the water in the water hole from being discharged from the water outlet pipe; if the water volume is large and the impact force of the water flow causes the spring to be continuously compressed and the second blocking mechanism is continuously closed, during the closing process, the gap between the two baffles becomes smaller and smaller until it is completely closed and the impact force of the water flow flowing in through the water hole is still sufficient to keep the spring compressed, so that the water flow can only flow to the water outlet pipe through the water hole, thereby achieving the effect of controlling the water flow discharged from the water outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of a water exploration and release drilling blowout prevention device;

[0021] Figure 2 It is a cross-sectional view of a water exploration and release drilling blowout prevention device;

[0022] Figure 3 It is a schematic diagram of the central axis and its connected structures;

[0023] Figure 4 It is a cross-sectional view of the baffle.

[0024] In the figure: 1. water exploration drilling rig body; 2. cylinder; 3. through groove; 31. slide groove; 32. limit groove; 4. central axis; 5. first blocking mechanism; 51. baffle plate; 52. positioning ring; 53. positioning rod; 54. spring; 6. second blocking mechanism; 61. baffle plate; 62. movable rod; 63. opening; 64. water hole; 65. limit protrusion; 7. water outlet pipe; 8. drill rod; 9. fixed plate. DETAILED DESCRIPTION

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

[0027] like Figure 1-4As shown, a water exploration and release drilling blowout prevention device includes a cylinder 2 fixedly connected to a water exploration drilling rig body 1, the model of the water exploration drilling rig body 1 is ZQJC-920 / 11.0S, the device is installed on the guide rail of the water exploration drilling rig body 1, and the drill rod 8 on the water exploration drilling rig body 1 can pass through the device and drill holes; a through groove 3 is opened in the cylinder 2, and a central axis 4 coaxial with the cylinder 2 is arranged in the through groove 3, the drill rod 8 on the water exploration drilling rig body 1 passes through the central axis 4, and a first blocking mechanism 5 is arranged at one end of the central axis 4 close to the water exploration drilling rig body 1, the first blocking mechanism 5 includes a baffle 51 fixedly connected to the side wall of one end of the central axis 4 close to the water exploration drilling rig body 1, a rubber layer (not shown in the figure) is arranged around the outer wall of the baffle 51, and the outer wall of the rubber layer is in contact with the inner wall of the through groove 3, A positioning ring 52 is fixedly connected to the inner wall of the groove 3, and one end of the central axis 4 close to the water exploration drilling rig body 1 can just be inserted into the positioning ring 52. A positioning rod 53 is fixedly connected to the baffle 51 along the circumferential direction. The positioning rod 53 penetrates and slides on the positioning ring 52 to keep the central axis 4 coaxial with the cylinder 2. A spring 54 is connected between the baffle 51 and the positioning ring 52, and the spring 54 can be sleeved on the positioning rod 53; a second blocking mechanism 6 is arranged between the cylinder 2 and the central axis 4, and the second blocking mechanism 6 can change the closing state according to the amount of water; a water outlet pipe 7 is arranged on the cylinder 2 to connect the through groove 3 with the outside world, and the water outlet pipe 7 is located between the first blocking mechanism 5 and the second blocking mechanism 6. When the second blocking mechanism 6 is fully opened, the spring 54 is just in a normal state, and at this time it does not affect the drainage of the water outlet pipe 7.

[0028] like Figure 1-4 As shown, the second blocking mechanism 6 includes baffles 61 arranged on both sides of the central axis 4, and movable rods 62 are hinged on the two baffles 61. The free ends of the movable rods 62 are hinged on the central axis 4. The inner wall of the through groove 3 is provided with a slide groove 31 and the baffles 61 slide in the slide groove 31. The side of the baffle 61 close to the central axis 4 is provided with a semicircular opening 63, and the baffle 61 is provided with a water hole 64. When the inner walls of the openings 63 on the two baffles 61 are both in contact with the central axis 4, the sides of the two baffles 61 close to each other are also closely in contact, so that the water flow sprayed from the water hole can only enter between the first blocking mechanism 5 and the second blocking mechanism 6 from the water hole 64 and be discharged from the water outlet pipe 7, thereby controlling the water discharge amount of the water outlet pipe 7.

[0029] When the baffle plate 51 in the first blocking mechanism 5 is impacted by the water flow, it moves close to the positioning ring 52, and the spring 54 is squeezed. During the movement of the middle axis 4, the second blocking mechanism 6 starts to close. If the amount of water is small and the impact force of the water flow is not enough to continue to compress the spring 54, the second blocking mechanism 6 stops closing, and does not affect the water in the water hole from being discharged from the water outlet pipe 7. If the amount of water is large and the impact force of the water flow causes the spring 54 to continue to compress and the second blocking mechanism 6 continues to close, during the closing process, the gap between the two baffles 61 becomes smaller and smaller until The impact force of the water flow that is fully closed and flows in through the water hole 64 is still sufficient to keep the spring 54 compressed, so that the water flow can only flow to the water outlet pipe 7 through the water hole 64, thereby achieving the effect of controlling the water flow discharged from the water outlet pipe 7. When the water flow decreases or its impact force is not sufficient to keep the spring 54 in the compressed state at this moment, the spring 54 recovers its deformation and pushes the baffle plate 51 and the central axis 4 away from the positioning ring 52, so that the baffle plate 61 slides into the slide groove 31, thereby expanding the gap between the two baffle plates 61, and preventing the water flow from being difficult to be discharged from the water outlet pipe 7 when the water volume is small.

[0030] like Figure 1-4 As shown, a long strip-shaped limiting groove 32 is provided on the side wall of the slide groove 31 , and a limiting protrusion 65 is provided on the side wall of the baffle 61 close to the limiting groove 32 . The limiting protrusion 65 slides in the limiting groove 32 to improve the stability of the baffle 61 when sliding in the slide groove 31 .

[0031] like Figure 1-4 As shown, a fixing plate 9 is fixedly connected to the side of the cylinder 2 away from the water exploration drilling rig body 1, and an anchor hole is opened on the fixing plate 9. The fixing plate 9 is fixed to the periphery of the borehole opening by an anchor rod passing through the anchor hole.

[0032] The working principle of a water exploration and release drilling anti-blowout device in this embodiment is as follows: when in use, adjust the angle of the water exploration drilling rig body 1 so that the fixed plate 9 is aligned with the hole to be drilled, fix the fixed plate 9 around the hole mouth and start the water exploration drilling rig body 1; after drilling out water, the water flows into the through groove 3 and is discharged from the water outlet pipe 7; if the water flow rate increases, the baffle plate 51 moves close to the positioning ring 52 when impacted by the water flow, and the spring 54 is squeezed, and during the movement of the central axis 4, the second blocking mechanism 6 starts to close. If the water volume is small and the impact force of the water flow is not enough to continue If the spring 54 is further compressed, the second blocking mechanism 6 stops closing, and the water in the water hole is not affected by being discharged from the water outlet pipe 7; if the amount of water is large and the impact force of the water flow causes the spring 54 to be continuously compressed, causing the second blocking mechanism 6 to be continuously closed. During the closing process, the gap between the two baffles 61 becomes smaller and smaller until it is completely closed and the impact force of the water flow flowing in through the water hole 64 is still sufficient to keep the spring 54 compressed, so that the water flow can only flow to the water outlet pipe 7 through the water hole 64, thereby achieving the effect of controlling the water flow discharged from the water outlet pipe 7.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A water exploration and release drilling blowout prevention device, characterized in that: The invention comprises a cylinder (2) fixedly connected to a water exploration drilling rig body (1), a through groove (3) being provided in the cylinder (2), a central axis (4) coaxial with the cylinder (2) being arranged in the through groove (3), a drill rod (8) on the water exploration drilling rig body (1) passing through the central axis (4), a first blocking mechanism (5) being arranged at one end of the central axis (4) close to the water exploration drilling rig body (1), a second blocking mechanism (6) being arranged between the cylinder (2) and the central axis (4), the second blocking mechanism (6) being able to change the closed state according to the water flow rate; a water outlet pipe (7) being arranged on the cylinder (2) so as to connect the through groove (3) with the outside, the water outlet pipe (7) being located between the first blocking mechanism (5) and the second blocking mechanism (6).

2. A water exploration and release drilling blowout prevention device according to claim 1, characterized in that: The first blocking mechanism (5) comprises a blocking plate (51) fixedly connected to the central axis (4); the outer wall of the blocking plate (51) is in contact with the inner wall of the through groove (3); a positioning ring (52) is fixedly connected to the inner wall of the through groove (3); a positioning rod (53) is fixedly connected to the blocking plate (51) and passes through and slides on the positioning ring (52); a spring (54) is connected between the blocking plate (51) and the positioning ring (52).

3. A water exploration and release drilling blowout prevention device according to claim 2, characterized in that: The spring (54) is sleeved on the positioning rod (53).

4. A water exploration and release drilling blowout prevention device according to claim 2, characterized in that: When the second blocking mechanism (6) is fully opened, the spring (54) is just in a normal state.

5. The water exploration and release drilling blowout prevention device according to claim 2, characterized in that: The second blocking mechanism (6) comprises baffles (61) arranged on both sides of the central axis (4), a movable rod (62) is hinged on the baffle (61), and a free end of the movable rod (62) is hinged on the central axis (4).

6. A water exploration and release drilling blowout prevention device according to claim 5, characterized in that: The inner wall of the through groove (3) is provided with a sliding groove (31) and the baffle (61) slides in the sliding groove (31).

7. A water exploration and release drilling blowout prevention device according to claim 6, characterized in that: The baffle (61) is provided with an opening (63) on one side close to the central axis (4), and the opening (63) is semicircular.

8. The water exploration and release drilling blowout prevention device according to claim 7, characterized in that: The baffle plate (61) is provided with a water hole (64).

9. The water exploration and release drilling blowout prevention device according to claim 6, characterized in that: The inner wall of the slide groove (31) is provided with a limiting groove (32), and the side wall of the baffle (61) is provided with a limiting protrusion (65), and the limiting protrusion (65) slides in the limiting groove (32).

10. The water exploration and release drilling blowout prevention device according to claim 1, characterized in that: A fixing plate (9) is fixedly connected to the side of the cylinder (2) away from the water exploration drilling rig body (1), and an anchor hole is provided on the fixing plate (9).

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