Fixed equipment for drilling geothermal wells

Abstract

The present invention discloses a fixing device for drilling geothermal wells, comprising a base provided 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 the output end of the first motor, a turntable fixedly connected to the lower end of the rotating shaft, and a clamping member for clamping the drill rod attached to the edge of the turntable. The present invention improves the efficiency of drill rod installation by avoiding the steps of manually transporting or roping the drill rod and reducing the need for manual adjustment of the drill rod.

Description

[Technical field]

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

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

[0003] The problems with this prior art are that the stability of hoisting the drill rod by the sling is still insufficient, it is difficult to precisely 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] In response to the problems existing in the prior art, the present invention provides a fixing device for geothermal well drilling, which has the advantages of avoiding the steps of manually transporting the drill rod or hoisting it with a rope, and reducing the need for manually adjusting the drill rod, thereby improving the installation efficiency of the drill rod, and solving the problems that the stability of hoisting the drill rod with the hoisting rope is still insufficient, it is difficult to accurately fix the drill rod at the location where it needs to be installed, and the convenience of installing the drill rod is still insufficient. [Means for solving the problem]

[0005] The present invention is realized as follows: A geothermal well drilling fixture including a base provided with a drill rod passing 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 driving member fixedly connected to the middle part of the carrier, a drill rod fixedly connected to the lower side of the first driving 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 passing hole, a first slide rail is provided on the carrier, a drive base is connected to the first slide rail, a first motor is fixedly connected to the upper side of the drive base, 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 arrangement, when the drill rod needs to be installed, the carrier is driven by the slide table to move to the side of the base, and the drive base is further moved to the side of the base along the first slide rail, so that the clamping member moves to the outside of the base. Then, the drill rod is moved to the clamping member, and the clamping member clamps the drill rod vertically. Then, the first motor drives the turntable with the rotating shaft to move and rotate the drill rod to the inside, and then resets the drive base and the slide table to drive the drill rod to move to the middle part until the drill rod and the first drive member are precisely aligned, and fix the drill rod to the first drive member. With this arrangement, there is no need to manually transport the drill rod or hoist it with a rope, and there is no need to manually adjust the drill rod, and the installation speed of the drill rod is increased. In addition, 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 respectively via 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 second motor is driven to rotate the stud bolt, 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 slidably connected to the second slide rail, which provides a supporting force to the clamping arm and prevents the stud bolt from being bent when the clamping arm receives a force.

[0010] As a preferred means of the present invention, the clamping arm is provided with a guide hole, a support plate is fixedly connected to the edge of the cutout, 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 supporting force on the drill rod and preventing the clamping arm from bending downward.

[0012] As a preferred means 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 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 not clamping the drill rod), and at this time the stopper rod comes out of the guide hole, so the stopper rod can be slid out of the third slide rail.

[0014] In a preferred implementation 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 arrangement, when clamping, the clamping arms are opened, and the stopper rod and the rollers do not move. Because the rollers are located in the middle of the clamping arms, when the clamping arms are opened, the rollers do not prevent the drill rod from being attached to the middle of the clamping arms. When the drill rod is clamped, the inside of the clamping arms clamps the edge of the drill rod, so that after the drill rod is attached, the clamping arms can be moved away, for example, a gap of several millimeters is opened so that the clamping arms do not interfere with the rotation of the drill rod, and at this time, the rollers are still in close contact with the drill rod, so that the position of the drill rod can be controlled, and the rotation of the drill rod is not affected, and the drill rod can be drilled downward.

[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 the semi-support ring is provided with a bearing groove, 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 the drill rod is attached to the clamping member, the lower end of the drill rod is placed in the support groove first, which makes it easy to attach the drill rod to the clamping member. When the drill rod is moved, the semi-support ring can be moved by the universal ball, so that the drill rod can be supported at all times. This installation makes it easy to attach a large drill rod. In addition, the diameter of the semi-support ring is larger than the diameter of the drill rod passing hole, so that the universal ball will not get caught when passing through the drill rod passing hole.

[0018] As 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 all connected to the first slide rail and are 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. Effect of the Invention

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

[0020] During the execution of the drill rod installation, the carrier is driven by the slide table to move to the side of the base, and the drive base further extends along the first slide rail to the side of the base, so that the clamping member is positioned outside the base. Then, the drill rod is placed on the clamping member so that the clamping member clamps the drill rod vertically. The first motor drives the turntable with a rotation axis so that the drill rod rotates to the inside, and then drives the drill rod to move to the middle part and fix it to the first drive member until the drive base and the slide table return to their original positions to achieve precise alignment between the drill rod and the first drive member. 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 description of the drawings]

[0021] [Figure 1] FIG. 2 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 viewpoint. [Diagram 2] FIG. 2 is a schematic diagram of an enlarged structure of part A in FIG. 1 provided in an embodiment of the present invention. [Diagram 3]FIG. 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 a fixed device for drilling a geothermal well provided in an embodiment of the present invention from a second perspective. [Diagram 5] FIG. 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 PREFERRED EMBODIMENTS

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

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

[0024] 1 and 2, the geothermal well drilling fixture provided in the embodiment of the present invention includes a base 1 having a drill rod through 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; The drill rod 7 and the drill 8 can pass through the drill rod passage hole 2, and a first slide rail 9 is provided on the carrier 5, 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.

[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 driving base 10 is further moved to the side of the base 1 along the first slide rail 9, so that the clamping member moves to the outside of the base 1. Then, the drill rod 7 is moved to the clamping member, and the clamping member vertically clamps the drill rod 7. Then, the first motor 11 drives and moves the turntable 13 with the rotating shaft 12 to rotate the drill rod 7 to the inside, and then the driving base 10 and the slide table 3 are reset, and the drill rod 7 is driven to move to the middle part until the drill rod 7 and the first driving member 6 are precisely aligned, and the drill rod 7 is fixed to the first driving member 6.

[0026] This installation increases the speed of installing the drill rod 7, eliminating the need to manually transport or hoist the drill rod 7 with a rope, and eliminating the need to manually adjust 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 turntable 13 has a notch 14 at its edge. 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 respectively via 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] During 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 and prevents the stud bolt 17 from being bent when the clamping arm 18 is subjected to a force.

[0031] 2 and 3, the clamping arm 18 is provided with a guide hole 21, and a support plate 22 is fixedly connected to the edge of the notch 14. 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 supporting 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 extending to the end of the support plate 22 is provided on the edge 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.

[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 a downward force, 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 not clamping the drill rod 7), and at this time, the stopper rod 23 comes out of the guide hole 21, so that 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 installation, when clamping, the clamping arm 18 opens, and the stopper rod 23 and the roller 27 do not move. Since the roller 27 is located in the middle of the clamping arm 18, when the clamping arm 18 is opened, the roller 27 does not prevent the drill rod 7 from being attached to the middle of the clamping arm 18. When the drill rod 7 is clamped, the edge of the drill rod 7 is clamped inside the clamping arm 18, so that the clamping arm 18 can move away after the drill rod 7 is attached. For example, a gap of several millimeters is provided so that the clamping arm 18 does not 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, so that it can exert a position control effect on the drill rod 7, and the rotation of the drill rod 7 is not affected. At this time, the drill rod 7 can be drilled downward to drill a well.

[0037] Referring to FIG. 4 and FIG. 5, the base 1 is provided with a semi-support ring 28, a universal ball 29 is fixedly connected to the underside of the semi-support ring 28, and a support groove 30 is provided inside the semi-support 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 the drill rod 7 is attached to the clamping member, the lower end of the drill rod 7 is placed in the support groove 30. This 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 by the universal ball 29, so that the drill rod 7 can be supported at all times. This installation makes it easy to attach a large drill rod 7. In addition, the diameter of the semi-support ring 28 is larger than the diameter of the drill rod passing hole 2, so that the universal ball 29 will not get caught when passing through the drill rod passing 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 all connected to the first slide rail 9 and are located on both sides of the first slide rail 9, 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 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.

[0040] The operating principle of the present invention is as follows. The carrier 5 and the drive 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] - A first motor 11 drives and rotates a turntable 13 via a rotating shaft 12, thereby rotating the drill rod 7 to the inside.

[0043] - The drive carriage 10 and the 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, thus improving the installation speed.

[0045] It should be noted that, as used herein, relational terms such as, for example, first and second, are used only to distinguish one entity or operation from another and do not require or imply that such actual relationship or order necessarily exists between those entities or operations. And, the terms "comprise", "include", "comprise" or any other variation thereof are intended to cover a non-exclusive "include", 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 includes elements inherent to 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 driving member, 7...drill rod, 8...drill, 9...first slide rail, 10...driving table, 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...driving lead screw, 102...base body, 103...driving motor.

Claims

1. A fixture for drilling geothermal wells, comprising a base (1) in which a drill rod passage hole (2) is provided, 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 an upper end of the lifter (4), a first driving member (6) is fixedly connected to an intermediate portion of the carrier (5), a drill rod (7) is fixedly connected to a lower side of the first driving member (6), and a drill (8) is fixedly connected to a 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 a drill rod (7) is attached to the edge of the turntable (13). The turntable (13) has a notch (14) on its edge, 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 an output end of the second motor (16) is fixedly connected to one of the ends of the stud bolt (17); 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). A fixed device for drilling geothermal wells, characterized in that

2. 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).

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

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) that is slidably inserted into the guide hole (21) is fixedly connected to the support plate (22).

3. A fixing device for drilling geothermal wells according to claim 1 or 2.

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

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

5. 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.

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

6. 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), The table body (102) is slidably connected to the first slide rail (9) and is connected to the driving lead screw (101) by a screw thread, and the first motor (11) is fixedly connected to a 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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