A hydrogeological exploration drilling blowout preventer

Abstract

The utility model relates to the technical field of blowout preventer, specifically relates to a hydrogeological exploration borehole blowout preventer, including the drill rod, the pipe body of drill rod is provided with the pressure relief pipe, the lower extreme fixedly connected with the drill bit of drill rod, still include the two mounting brackets of symmetrical settings, the opposite end of two mounting brackets all are established to have the lifting groove, the screw rod is rotatably arranged in the lifting groove. The utility model discloses screw rod drive compares traditional electric push rod, and the screw thread cooperation of double screw rod and lifting plate compares electric push rod, and the ability of resisting lateral force is stronger, can still keep the drill rod steady lifting under the complex geological condition, has higher stability and precision, can ensure that the drill rod lifting process is stable, reduces the drilling deviation caused by the sway, through the bevel gear transmission system, realizes the synchronous distribution of lifting and rotating power, reduces the motor number, reduces the equipment cost and energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of blowout prevention devices, specifically to a blowout prevention device for hydrogeological exploration boreholes. Background Technology

[0002] In hydrogeological exploration operations, blowout preventers are key equipment for ensuring construction safety and improving exploration efficiency. They can effectively prevent the ejection of mud, gas, etc. due to abnormal underground pressure during drilling, avoiding harm to personnel safety and the environment, while ensuring the smooth progress of drilling operations.

[0003] Currently, a hydrogeological drilling blowout prevention device with publication number CN211474068U uses a single electric actuator to drive the raising and lowering of the drill rod and drill bit. However, the electric actuator suffers from low stability in practical use, making it difficult to ensure smooth and precise raising and lowering of the drill bit in complex drilling environments, thus affecting the performance. Furthermore, the device uses independent motors to drive the raising and lowering of the drill rod and rotation, which, while achieving the desired functions, increases the complexity of the equipment and significantly raises its cost. The simultaneous operation of multiple motors also significantly increases energy consumption, hindering energy conservation, emission reduction, and the reduction of exploration costs.

[0004] Therefore, there is an urgent need for a blowout prevention device for hydrogeological exploration boreholes that is highly stable, low in cost, and consumes little energy. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a blowout prevention device for hydrogeological exploration boreholes, which can effectively solve the problems of the existing technology using a single electric push rod to drive the lifting function of the drill rod and drill bit, and the lifting and rotation of the device and the rotation of the drill rod being driven by separate motors, which leads to increased equipment costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a blowout prevention device for hydrogeological exploration boreholes, including a drill rod with a pressure relief pipe on its body and a drill bit fixedly connected to its lower end. It also includes two symmetrically arranged mounting brackets, each with a lifting groove at one opposite end. A threaded rod is rotatably mounted within the lifting groove, with its upper end extending above the mounting bracket. A lifting plate is threadedly connected to the bodies of the two threaded rods, and the drill rod is rotatably mounted on the lower end of the lifting plate. A drive assembly for driving the two threaded rods and the drill rod to rotate is provided on the upper end of the lifting plate.

[0008] The drive assembly includes a mounting box fixedly connected to the upper end of the lifting plate. A drive bevel gear is rotatably connected to the inner side wall of the mounting box. A drive motor for driving the drive bevel gear to rotate is fixedly installed inside the mounting box. The drive bevel gear is symmetrically meshed with two driven bevel gears, and the two driven bevel gears are vertically distributed. A telescopic rod is rotatably connected to the upper end of the mounting box. A transmission structure is rotatably sleeved on the outer side of the two threaded rods and the telescopic rod.

[0009] According to the above-mentioned hydrogeological exploration borehole blowout prevention device, the driven bevel gear on the upper side is rotatably connected to the telescopic rod on the same axis, and the driven bevel gear on the lower side is rotatably connected to the drill rod on the same axis.

[0010] According to the above-mentioned blowout prevention device for hydrogeological exploration boreholes, the telescopic rod includes a fixed rod, the lower end of which is provided with a sliding groove, a slider is slidably connected to the sliding groove, and a rotating rod is fixedly connected to the lower end of the slider, and the rotating rod is coaxially rotatably connected to a driven bevel gear located on the upper side.

[0011] According to the above-mentioned hydrogeological exploration borehole blowout prevention device, a fixing plate is fixedly connected to the upper end of one of the mounting frames. The fixing plate is L-shaped, and the lower end of the fixing plate is rotatably connected to a fixing rod.

[0012] According to the above-mentioned blowout prevention device for hydrogeological exploration boreholes, the chute is cross-shaped, and the shape of the slider is adapted to the chute.

[0013] According to the above-mentioned hydrogeological exploration borehole blowout prevention device, a controller for controlling the drive motor is fixedly installed at the front end of one of the mounting frames, and the drive motor is a forward and reverse motor.

[0014] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0015] Compared to traditional electric push rods, the threaded rod transmission in this invention features a double-threaded rod with a threaded fit to the lifting plate. This provides stronger resistance to lateral forces and ensures stable lifting and lowering of the drill rod even under complex geological conditions. It also offers higher stability and precision, ensuring smooth lifting and lowering of the drill rod and reducing drilling deviations caused by shaking. Furthermore, the bevel gear transmission system enables synchronous distribution of lifting and rotational power, reducing the number of motors and lowering equipment costs and energy consumption. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the internal structure of the mounting box;

[0019] Figure 3 for Figure 1 A schematic diagram of the disassembled structure of the telescopic rod.

[0020] Reference numerals in the attached drawings: 1. Mounting bracket; 2. Lifting groove; 3. Threaded rod; 4. Lifting plate; 5. Drill rod; 6. Drill bit; 7. Pressure relief pipe; 8. Mounting box; 9. Driving bevel gear; 10. Driven bevel gear; 11. Drive motor; 12. Telescopic rod; 121. Fixed rod; 122. Slide groove; 123. Sliding block; 124. Rotating rod; 13. Transmission structure; 14. Controller; 15. Fixed plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Example: Refer to Figures 1 to 3 A blowout prevention device for hydrogeological exploration boreholes includes a drill rod 5, and a pressure relief pipe 7 is provided on the body of the drill rod 5. The pressure relief pipe 7 is a prior art technology, and specific references are made to the prior art documents. During the drilling process, if the underground pressure is abnormal, such as the mud or gas pressure increases, the high-pressure fluid in the borehole can be discharged through the pressure relief pipe 7 on the body of the drill rod 5 to release the internal pressure, avoid blowout caused by excessive pressure, and ensure operational safety.

[0024] The lower end of the drill rod 5 is fixedly connected to the drill bit 6, and also includes two symmetrically arranged mounting brackets 1. Each of the two mounting brackets 1 has a lifting groove 2 at one end opposite to the other. A threaded rod 3 is rotatably arranged in the lifting groove 2, and the upper end of the threaded rod 3 extends to the top of the mounting bracket 1. The top end of the threaded rod 3 extends to the top of the mounting bracket, providing support and transmission basis for lifting.

[0025] The two threaded rods 3 are threaded together and connected to a lifting plate 4. The drill rod 5 is rotatably mounted on the lower end of the lifting plate 4. The upper end of the lifting plate 4 is provided with a drive assembly for driving the two threaded rods 3 and the drill rod 5 to rotate. Specifically, the drive assembly includes a mounting box 8 fixedly connected to the upper end of the lifting plate 4. An active bevel gear 9 is rotatably connected to the inner side wall of the mounting box 8. A drive motor 11 for driving the active bevel gear 9 to rotate is fixedly installed inside the mounting box 8. A controller 14 for controlling the drive motor 11 is fixedly installed at the front end of one of the mounting brackets 1. The drive motor 11 is a forward and reverse motor. When the drive motor 11 rotates forward, the lifting plate 4 can move downward along the threaded rods 3, driving the drill rod 5 and the drill bit 6 to perform drilling. When the drive motor 11 rotates in reverse, the drill rod 5 and the drill bit 6 move upward to reset.

[0026] The driving bevel gear 9 is symmetrically meshed with two driven bevel gears 10, and the two driven bevel gears 10 are vertically distributed. The driven bevel gear 10 on the upper side is coaxially rotatably connected to the telescopic rod 12, and the driven bevel gear 10 on the lower side is coaxially rotatably connected to the drill rod 5, forming a power distribution structure.

[0027] The upper end of the mounting box 8 is rotatably connected to a telescopic rod 12. The telescopic rod 12 includes a fixed rod 121. The lower end of the fixed rod 121 is provided with a slide groove 122. A slider 123 is slidably connected to the slide groove 122. A rotating rod 124 is fixedly connected to the lower end of the slider 123. The rotating rod 124 is coaxially rotatably connected to the driven bevel gear 10 located on the upper side. The slide groove 122 is cross-shaped, and the shape of the slider 123 is adapted to the slide groove 122, so that the telescopic rod 12 can rotate with the driven bevel gear 10 during the lifting and lowering process, and can also achieve length extension and retraction through the sliding of the slider 123 in the slide groove 122.

[0028] One of the mounting brackets 1 has a fixed plate 15 fixedly connected to its upper end. The fixed plate 15 is L-shaped, and its lower end is rotatably connected to the fixed rod 121.

[0029] The two threaded rods 3 and the outer side of the telescopic rod 12 are rotatably connected to a transmission structure 13. The transmission structure 13 is a common type, such as a synchronous belt or gear set, to ensure that the two threaded rods 3 rotate synchronously.

[0030] The working principle of this utility model is as follows:

[0031] The drive motor 11 is started, and its forward or reverse rotation is controlled by the controller 14, which drives the active bevel gear 9 to rotate. The active bevel gear 9 simultaneously meshes with the two driven bevel gears 10 on the upper and lower sides, causing the two driven bevel gears 10 to rotate together. When the drive motor 11 rotates forward, the upper driven bevel gear 10 drives the slider 123 to rotate in the slide groove 122 through the rotating rod 124, which in turn drives the fixed rod 121 to rotate. Since the fixed plate 15 is rotatably connected to the fixed rod 121, the telescopic rod 12 can extend and retract with the lifting plate 4 while rotating, ensuring that the power transmission is not affected by the lifting action. At the same time, through the transmission structure 13, the two threaded rods 3 rotate synchronously, driving the lifting plate 4 to descend, and the drill rod 5 and drill bit 6 to descend. The lower driven bevel gear 10 directly drives the drill rod 5 and drill bit 6 to rotate, realizing the drilling operation of the drill rod 5 and drill bit 6 while descending and rotating.

[0032] When it is necessary to lift the drill rod 5 and drill bit 6, the controller 14 controls the drive motor 11 to reverse, the threaded rod 3 to rotate counterclockwise, the lifting plate 4 to move upward along the threaded rod 3, and at the same time the drill rod 5 rotates in the opposite direction with the lower driven bevel gear 10, so as to realize the lifting and resetting of the drill rod 5.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A blowout prevention device for hydrogeological exploration boreholes, comprising a drill rod (5), wherein a pressure relief pipe (7) is provided on the body of the drill rod (5), and a drill bit (6) is fixedly connected to the lower end of the drill rod (5), characterized in that, It also includes two symmetrically arranged mounting brackets (1), each of the two mounting brackets (1) having a lifting groove (2) at one end. A threaded rod (3) is rotatably arranged in the lifting groove (2), and the upper end of the threaded rod (3) extends to the top of the mounting bracket (1). The rods of the two threaded rods (3) are threaded together with a lifting plate (4), and the drill rod (5) is rotatably installed at the lower end of the lifting plate (4). The upper end of the lifting plate (4) is provided with a drive assembly for driving the two threaded rods (3) and the drill rod (5) to rotate. The drive assembly includes a mounting box (8) fixedly connected to the upper end of the lifting plate (4). The inner side wall of the mounting box (8) is rotatably connected to a drive bevel gear (9). A drive motor (11) for driving the drive bevel gear (9) to rotate is fixedly installed inside the mounting box (8). The drive bevel gear (9) is symmetrically meshed with two driven bevel gears (10), and the two driven bevel gears (10) are vertically distributed. The upper end of the mounting box (8) is rotatably connected to a telescopic rod (12). The two threaded rods (3) and the outer side of the telescopic rod (12) are rotatably sleeved with a transmission structure (13).

2. The blowout prevention device for hydrogeological exploration boreholes according to claim 1, characterized in that, The driven bevel gear (10) located on the upper side is rotatably connected to the telescopic rod (12) on the same axis, and the driven bevel gear (10) located on the lower side is rotatably connected to the drill rod (5) on the same axis.

3. The blowout prevention device for hydrogeological exploration boreholes according to claim 2, characterized in that, The telescopic rod (12) includes a fixed rod (121), the lower end of which is provided with a sliding groove (122), a slider (123) is slidably connected to the sliding groove (122), and a rotating rod (124) is fixedly connected to the lower end of the slider (123), and the rotating rod (124) is coaxially rotatably connected to the driven bevel gear (10) located on the upper side.

4. The blowout prevention device for hydrogeological exploration boreholes according to claim 3, characterized in that, One of the mounting brackets (1) has a fixed plate (15) fixedly connected to its upper end. The fixed plate (15) is L-shaped and its lower end is rotatably connected to the fixed rod (121).

5. A blowout prevention device for hydrogeological exploration boreholes according to claim 4, characterized in that, The groove (122) is cross-shaped, and the shape of the slider (123) is adapted to the groove (122).

6. A blowout prevention device for hydrogeological exploration boreholes according to claim 1, characterized in that, One of the mounting brackets (1) has a controller (14) for controlling the drive motor (11) fixedly mounted on its front end, and the drive motor (11) is a forward and reverse motor.

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