Fixed device for drilling geothermal well

Abstract

SOLUTION: The present invention provides a fixed device for drilling geothermal wells, which includes a base with a drill rod passage hole, a slide table fixedly connected to the base, a lifter fixedly connected to the slide table, a carrier fixedly connected to the upper end of the lifter, a first slide rail provided on the carrier, a drive base connected to the first slide rail, a first motor fixedly connected to the upper side of the drive base, a rotating shaft fixedly connected to an output end of the first motor, a turntable fixedly connected to a lower end of the rotating shaft, and a clamping member attached to an edge of the turntable for clamping the drill rod.EFFECT: The invention improves drill rod installation efficiency by avoiding steps of manually transporting the drill rod or lifting the drill rod with a rope and by reducing the need for manual adjustment of the drill rod.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention belongs to the field of well drilling technology, and in particular to stationary devices for drilling geothermal wells. [Background technology]

[0002] A Chinese invention patent (disclosure number CN110107229A, disclosure date 2019-08-09) discloses a geothermal well drilling fixing device, which includes a base, a support rod, a rail bracket, a slider, a suspending cable, a support plate, a gear, a slide plate, and a fastening plate, wherein the support rod is fixed to the base, the rail bracket is slidably connected to the support rod, a slider is slidably connected to the rail bracket, a suspending cable is provided on the slider, the support plate is slidably connected to the support rod, the gear is rotatably connected to the support plate, and the gear has a front The slide plate is slidably connected, and a fastening plate is fixed to the slide plate. The fixing device for geothermal well drilling provided by this invention has a rail bracket slidably mounted on the support rod up and down, a slider slidably connected to the rail bracket, and a sling mounted on the slider. An auger drill rod is fixed by the sling, and the position of the auger drill rod is adjusted and installed by the slider and rail bracket to match the auger drill, eliminating the need for a crane in the process, saving labor and construction costs.

[0003] The problems with this prior art are that the stability of lifting the drill rod by the sling is still insufficient, it is difficult to accurately fix the drill rod to the location where it needs to be installed, and the convenience of installing the drill rod is still insufficient. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention addresses the problems existing in the prior art by providing a fixing device for geothermal well drilling, which avoids the steps of manually transporting the drill rod or hoisting it with a rope, and reduces the need for manual adjustment of the drill rod, thereby improving the efficiency of drill rod installation. It also solves the problems that the stability of hoisting the drill rod with a hoisting rope is still insufficient, and it is difficult to accurately fix the drill rod at the required installation location, making the installation of the drill rod less convenient. [Means for solving the problem]

[0005] The present invention is realized as follows: A geothermal well drilling fixture includes a base having a drill rod passage hole, a slide table fixedly connected to the base, a lifter fixedly connected to the slide table, a carrier fixedly connected to the upper end of the lifter, a first drive member fixedly connected to the middle part of the carrier, a drill rod fixedly connected to the lower side of the first drive member, and a drill fixedly connected to the lower end of the drill rod, the drill rod and the drill can pass through the drill rod passage hole, a first slide rail is provided on the carrier, a drive table is connected to the first slide rail, a first motor is fixedly connected to the upper side of the drive table, a rotating shaft is fixedly connected to the output end of the first motor, a turntable is fixedly connected to the lower end of the rotating shaft, and a clamping member for clamping the drill rod is attached to the edge of the turntable.

[0006] With this setup, when a drill rod needs to be installed, the slide table drives the carrier to move to the side of the base, and the drive base further moves along the first slide rail to the side of the base, causing the clamping member to move to the outside of the base. The drill rod is then moved to the clamping member, which clamps the drill rod vertically. The first motor then drives the turntable with its rotation shaft to rotate the drill rod inward. The drive base and slide table are then reset, driving the drill rod to move to the middle until it is precisely aligned with the first drive member, and the drill rod is fixed to the first drive member. This setup eliminates the need to manually transport the drill rod or lift it with a rope, and eliminates the need to manually adjust the drill rod, thereby increasing the speed of drill rod installation. A counterweight is provided on the side of the turntable away from the clamping member to help maintain balance.

[0007] In a preferred embodiment of the present invention, a notch is provided on the edge of the turntable, and the clamping member includes a bearing stand, a second motor, a stud bolt, and a clamping arm, the bearing stand is fixedly connected to the upper side of the turntable, the stud bolt is rotatably connected to the bearing stand, the two clamping arms are connected to both ends of the stud bolt via respective screw threads, and the output end of the second motor is fixedly connected to one of the ends of the stud bolt.

[0008] In use, the stud bolt is driven by the second motor to rotate, and the two clamping arms open and close.

[0009] In a preferred embodiment of the present invention, the turntable is provided with a second slide rail, and the clamping arm is fixedly connected to a first slider that is slidably connected to the second slide rail. This arrangement provides a supporting force to the clamping arm, preventing the stud bolt from being bent when the clamping arm is subjected to force.

[0010] As a preferred means of the present invention, a guide hole is provided in the clamping arm, a support plate is fixedly connected to the edge of the notch, and a stopper rod is fixedly connected to the support plate and is slidably inserted into the guide hole.

[0011] With this installation, the support plate can support the clamping arm, and the stopper rod is inserted into the guide hole to regulate the position of the clamping arm, thereby improving the support force on the drill rod and preventing the clamping arm from bending downward.

[0012] In a preferred embodiment of the present invention, a third slide rail is provided on the edge of the support plate, extending to the end of the support plate, and a second slider, which is fixedly connected to the stopper rod, is slidably connected to the third slide rail.

[0013] With this installation, when the clamping arm normally clamps the drill rod, the stopper rod does not come out of the guide hole, and the force the stopper rod receives is mainly downward, so the second slider does not affect the normal use of the stopper rod.When the stopper rod needs to be removed or installed, the clamping arm can be moved closer (when it is not clamping the drill rod), at which time the stopper rod comes out of the guide hole and can be slid out of the third slide rail.

[0014] In a preferred embodiment of the invention, the stopper rod is a U-shaped rod, the end of which is provided with a receiving groove in which a roller is rotatably connected.

[0015] With this installation, when clamping, the clamping arms open and the stopper rod and roller do not move. Because the roller is located in the middle of the clamping arms, when the clamping arms are opened, the roller does not prevent the drill rod from being attached to the middle of the clamping arms. When the drill rod is clamped, the inner sides of the clamping arms clamp the edge of the drill rod. After the drill rod is attached, the clamping arms can be moved away, for example, leaving a gap of several millimeters so that the clamping arms do not interfere with the rotation of the drill rod. At this time, the roller is still in close contact with the drill rod, providing a positional restriction effect for the drill rod and not affecting its rotation, allowing the drill rod to drill downward into the well.

[0016] In a preferred embodiment of the present invention, the base is provided with a semi-support ring, the underside of which is fixedly connected to a universal ball, the inside of which is provided with a bearing groove, and the edge of the base is provided with an arc-shaped notch, and the semi-support ring is aligned with the arc-shaped notch.

[0017] Before attaching the drill rod to the clamping member, the lower end of the drill rod is first placed in the support groove, which makes it easy to attach the drill rod to the clamping member. When the drill rod is moved, the semi-support ring can move using the universal ball, so the drill rod can always be supported. This installation makes it easy to attach large drill rods. Furthermore, the diameter of the semi-support ring is larger than the diameter of the drill rod passage hole, so the universal ball will not get caught when passing through the drill rod passage hole.

[0018] In a preferred embodiment of the present invention, the drive table includes two drive lead screws, a table body, and two drive motors, the two drive lead screws are both connected to the first slide rail and located on both sides of the first slide rail, the table body is slidably connected to the first slide rail and connected to the drive lead screws by screw threads, the first motor is fixedly connected to the middle part of the table body, and the output ends of the two drive motors are fixedly connected to the two drive lead screws respectively. [Effects of the Invention]

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] During drill rod installation, the carrier is driven by the slide table to move to the side of the base, and the drive base extends further along the first slide rail to the side of the base, positioning the clamping member outside the base. The drill rod is then placed on the clamping member so that it vertically clamps the drill rod. The first motor drives the turntable with a rotation axis to rotate the drill rod to the inside. Then, the drive base and slide table return to their original positions, driving the drill rod to move to the middle and fixing it to the first drive member until the drill rod and the first drive member are precisely aligned. This design avoids the steps of manually carrying or hoisting the drill rod with a rope, reduces the need for manual adjustment of the drill rod, and thereby improves the efficiency of drill rod installation. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a schematic diagram of the three-dimensional structure of a fixed device for drilling a geothermal well provided in an embodiment of the present invention from a first perspective. [Figure 2] 2 is a schematic diagram of an enlarged structure of part A in FIG. 1 provided in an embodiment of the present invention. [Figure 3]3 is a schematic diagram of an enlarged structure of part B in FIG. 2 provided in an embodiment of the present invention. [Figure 4] FIG. 2 is a schematic diagram of the three-dimensional structure of the fixed device for drilling geothermal wells provided in an embodiment of the present invention from a second perspective. [Figure 5] 5 is a schematic diagram of an enlarged structure of part C in FIG. 4 provided in an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to make the contents, features and effects of the present invention more comprehensible, the following embodiments are given and described in detail with reference to the accompanying drawings.

[0023] The structure of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] 1 and 2, a geothermal well drilling fixture provided in an embodiment of the present invention includes a base 1 having a drill rod passage hole 2, a slide table 3 fixedly connected to the base 1, a lifter 4 fixedly connected to the slide table 3, a carrier 5 fixedly connected to the upper end of the lifter 4, a first driving member 6 fixedly connected to the middle part of the carrier 5, a drill rod 7 fixedly connected to the lower side of the first driving member 6, and a drill 8 fixedly connected to the lower end of the drill rod 7; The drill rod 7 and the drill 8 can pass through the drill rod passage hole 2, and the carrier 5 is provided with a first slide rail 9, to which a drive table 10 is connected, a first motor 11 is fixedly connected to the upper side of the drive table 10, a rotating shaft 12 is fixedly connected to the output end of the first motor 11, a turntable 13 is fixedly connected to the lower end of the rotating shaft 12, and a clamping member for clamping the drill rod 7 is attached to the edge of the turntable 13.

[0025] When the drill rod 7 needs to be installed, the slide table 3 is driven to move the carrier 5 to the side of the base 1, and the drive base 10 is further moved along the first slide rail 9 to the side of the base 1, so that the clamping member moves to the outside of the base 1. The drill rod 7 is then moved to the clamping member, which vertically clamps the drill rod 7. The first motor 11 then drives the turntable 13 via the rotation shaft 12 to rotate the drill rod 7 inward. The drive base 10 and slide table 3 are then reset, and the drill rod 7 is driven to move to the middle until the drill rod 7 and the first drive member 6 are precisely aligned, and the drill rod 7 is fixed to the first drive member 6.

[0026] This installation eliminates the need to manually transport the drill rod 7 or hoist it with a rope, and also eliminates the need to manually adjust the drill rod 7, thereby increasing the installation speed of the drill rod 7. In addition, a counterweight is provided on the side of the turntable 13 away from the clamping member to help maintain balance.

[0027] Referring to FIG. 2, the edge of the turntable 13 is provided with a notch 14. The clamping member includes a bearing stand 15, a second motor 16, a stud bolt 17, and a clamping arm 18. The bearing stand 15 is fixedly connected to the upper side of the turntable 13, a stud bolt 17 is rotatably connected to the bearing stand 15, the two clamping arms 18 are connected to both ends of the stud bolt 17 via respective screw threads, and the output end of the second motor 16 is fixedly connected to one of the ends of the stud bolt 17.

[0028] In use, the stud bolt 17 is driven by the second motor 16 to rotate, and the two clamping arms 18 open and close.

[0029] Referring to Figure 2, a second slide rail 19 is provided on the turntable 13, and a first slider 20, which is slidably connected to the second slide rail 19, is fixedly connected to the clamping arm 18.

[0030] This arrangement provides a support force to the clamping arm 18, preventing the stud bolt 17 from being bent when the clamping arm 18 is subjected to a force.

[0031] Referring to Figures 2 and 3, the clamping arm 18 is provided with a guide hole 21, a support plate 22 is fixedly connected to the edge of the notch 14, and a stopper rod 23 is fixedly connected to the support plate 22, and is slidably inserted into the guide hole 21.

[0032] With this installation, the support plate 22 can support the clamping arm 18, and the stopper rod 23 is inserted into the guide hole 21 to regulate the position of the clamping arm 18, thereby improving the support force on the drill rod 7 and preventing the clamping arm 18 from bending downward.

[0033] Referring to Figures 1 to 3, a third slide rail 24 is provided on the edge of the support plate 22, extending to the end of the support plate 22, and a second slider 25, which is fixedly connected to the stopper rod 23, is slidably connected to the third slide rail 24.

[0034] With this installation, when the clamping arm 18 normally clamps the drill rod 7, the stopper rod 23 does not come out of the guide hole 21, and the force that the stopper rod 23 receives is mainly downward, so the second slider 25 does not affect the normal use of the stopper rod 23. When it is necessary to remove or install the stopper rod 23, the clamping arm 18 can be moved closer (when it is not clamping the drill rod 7), at which time the stopper rod 23 comes out of the guide hole 21, and the stopper rod 23 can be slid out of the third slide rail 24.

[0035] 2 and 3, the stopper rod 23 is a U-shaped rod, and an accommodating groove 26 is provided at the end of the stopper rod 23 to which a roller 27 is rotatably connected.

[0036] With this arrangement, when clamping, the clamping arms 18 open, and the stopper rod 23 and roller 27 do not move. Because the roller 27 is located in the middle of the clamping arms 18, the roller 27 does not prevent the drill rod 7 from being attached to the middle of the clamping arms 18 when the clamping arms 18 are opened. When the drill rod 7 is clamped, the inner sides of the clamping arms 18 clamp the edge of the drill rod 7. After the drill rod 7 is attached, the clamping arms 18 can be moved away, for example, with a gap of several millimeters between them so as not to interfere with the rotation of the drill rod 7. At this time, the roller 27 is still in close contact with the drill rod 7, thereby exerting a positional control effect on the drill rod 7 and not affecting the rotation of the drill rod 7, allowing the drill rod 7 to drill downward into the well.

[0037] Referring to Figures 4 and 5, the base 1 is provided with a semi-supporting ring 28, a universal ball 29 is fixedly connected to the underside of the semi-supporting ring 28, and a support groove 30 is provided inside the semi-supporting ring 28; The edge of the base 1 is provided with an arcuate notch 31, and the semi-support ring 28 is aligned with the arcuate notch 31.

[0038] Before attaching the drill rod 7 to the clamping member, the lower end of the drill rod 7 is first placed in the support groove 30, which makes it easy to attach the drill rod 7 to the clamping member. When the drill rod 7 is moved, the semi-support ring 28 can move using the universal ball 29, so the drill rod 7 can always be supported. This installation makes it easy to attach a large drill rod 7. Furthermore, the diameter of the semi-support ring 28 is larger than the diameter of the drill rod passage hole 2, so the universal ball 29 will not get caught when passing through the drill rod passage hole 2.

[0039] 4 and 5, the driving table 10 includes two driving lead screws 101, one table body 102, and two driving motors 103. The two driving lead screws 101 are connected to the first slide rail 9 and are located on both sides of the first slide rail 9, respectively. The table body 102 is slidably connected to the first slide rail 9 and is connected to the driving lead screws 101 by screws. The first motor 11 is fixedly connected to the middle of the table body 102. The output ends of the two drive motors 103 are fixedly connected to the two drive lead screws 101, respectively.

[0040] The operating principle of the present invention is as follows. The carrier 5 and the driving base 10 are driven by the slide table 3 to move to the side of the base 1, and the clamping member is moved to the outside of the base 1.

[0041] - The drill rod 7 is inserted into the clamping member and fixed.

[0042] The first motor 11 drives and rotates the turntable 13 on the rotary shaft 12, which rotates the drill rod 7 to the inside.

[0043] - The drive carriage 10 and slide table 3 are reset to align the drill rod 7 with the first drive member 6 and lock them together.

[0044] - Such an installation allows the installation of the drill rod 7 to be completed automatically without the need for manual operation and adjustment, thereby improving the installation speed.

[0045] It should be noted that, in this specification, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another and do not necessarily require or imply that such an actual relationship or order exists between those entities or operations. And the terms "comprise," "include," or any other variation thereof are intended to cover a non-exclusive "comprise," such that a process, method, article, or device that includes a set of elements not only includes those elements, but also includes other elements not expressly listed or that are inherent in such process, method, article, or device.

[0046] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the appended claims and their equivalents. [Explanation of symbols]

[0047] 1...base, 2...drill rod passage hole, 3...slide table, 4...lifter, 5...carrier, 6...first drive member, 7...drill rod, 8...drill, 9...first slide rail, 10...drive base, 11...first motor, 12...rotating shaft, 13...turntable, 14...notch, 15...bearing base, 16...second motor, 17...stud bolt, 18...clamping arm, 19...second slide rail, 20...first slider, 21...guide hole, 22...support plate, 23...stopper rod, 24...third slide rail, 25...second slider, 26...accommodating groove, 27...roller, 28...semi-support ring, 29...universal ball, 30...support groove, 31...arc-shaped notch, 101...drive lead screw, 102...base body, 103...drive motor.

Claims

1. A geothermal well drilling fixture including a base (1) having a drill rod passage hole (2), A slide table (3) is fixedly connected to the base (1), a lifter (4) is fixedly connected to the slide table (3), a carrier (5) is fixedly connected to the upper end of the lifter (4), a first driving member (6) is fixedly connected to the middle part of the carrier (5), a drill rod (7) is fixedly connected to the lower side of the first driving member (6), and a drill (8) is fixedly connected to the lower end of the drill rod (7), and the drill rod (7) and the drill (8) can pass through the drill rod passing hole (2). The carrier (5) is provided with a first slide rail (9), a drive table (10) is connected to the first slide rail (9), a first motor (11) is fixedly connected to the upper side of the drive table (10), a rotating shaft (12) is fixedly connected to the output end of the first motor (11), a turntable (13) is fixedly connected to the lower end of the rotating shaft (12), and a clamping member for clamping the drill rod (7) is attached to the edge of the turntable (13). A fixed device for drilling geothermal wells, characterized in that

2. The edge of the turntable (13) is provided with a notch (14), The clamping member includes a bearing stand (15), a second motor (16), a stud bolt (17), and a clamping arm (18); The bearing stand (15) is fixedly connected to the upper side of the turntable (13), a stud bolt (17) is rotatably connected to the bearing stand (15), the two clamping arms (18) are connected to both ends of the stud bolt (17) via respective screw threads, and the output end of the second motor (16) is fixedly connected to one end of the stud bolt (17).

2. A geothermal well drilling fixture according to claim 1.

3. A second slide rail (19) is provided on the turntable (13), and a first slider (20) slidably connected to the second slide rail (19) is fixedly connected to the clamping arm (18).

3. A geothermal well drilling fixture according to claim 2.

4. The clamping arm (18) is provided with a guide hole (21), A support plate (22) is fixedly connected to the edge of the notch (14), and a stopper rod (23) slidably inserted into the guide hole (21) is fixedly connected to the support plate (22).

4. A geothermal well drilling fixture according to claim 2 or 3.

5. A third slide rail (24) is provided on the edge of the support plate (22) and extends to the end of the support plate (22), and a second slider (25) fixedly connected to the stopper rod (23) is slidably connected to the third slide rail (24).

5. A geothermal well drilling fixture according to claim 4.

6. The stopper rod (23) is a U-shaped rod, and an accommodating groove (26) is provided at the end of the stopper rod (23) to which a roller (27) is rotatably connected.

5. A geothermal well drilling fixture according to claim 4.

7. The base (1) is provided with a semi-supporting ring (28), a universal ball (29) is fixedly connected to the underside of the semi-supporting ring (28), and a bearing groove (30) is provided inside the semi-supporting ring (28); The edge of the base (1) is provided with an arcuate notch (31), and the semi-support ring (28) is aligned with the arcuate notch (31).

2. A geothermal well drilling fixture according to claim 1.

8. The drive table (10) includes two drive lead screws (101), one table body (102), and two drive motors (103); The two driving lead screws (101) are both connected to the first slide rail (9) and are located on both sides of the first slide rail (9), respectively; The table body (102) is slidably connected to the first slide rail (9) and connected to the driving lead screw (101) by a screw thread, and the first motor (11) is fixedly connected to the middle part of the table body (102); The output ends of the two drive motors (103) are fixedly connected to the two drive lead screws (101), respectively.

2. A geothermal well drilling fixture according to claim 1.

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