Fixing mechanism of deep well drilling rig power head and routine test device

Abstract

A deep well drilling rig power head fixing mechanism and a routine test device relate to the field of power head sealing performance detection, and comprise a fixing seat and two fixing frames arranged on the fixing seat at intervals, each fixing frame is rotatably provided with a connecting assembly, and the connecting assembly comprises a flange plate and a rotating shaft fixed on the outer side of the flange plate. The inner sides of the two flange plates are oppositely arranged to form an installation space for fixing a deep well drilling rig power head to be tested, the rotating shaft is rotatably installed on the fixing frame, and a locking assembly capable of limiting rotation of the rotating shaft is arranged between the fixing frame and the flange plates. The power head fixing mechanism is used for fixing a power head to be subjected to a sealing performance detection test, the power head can be overturned and fixed through the fixing mechanism, the problem that the assembly height is too high is solved, and workers can conduct assembly work conveniently.

Description

Technical Field

[0001] The utility model relates to the field of power head sealing performance detection, in particular to a fixing mechanism and a routine test device for a power head of a deep well drilling rig. Background Art

[0002] The power head is the core component of a deep well drilling rig. It is driven by a hydraulic motor to drive a first-stage spur gear reduction mechanism, and outputs power through a hollow main shaft, transmitting power to drill pipes, drill bits, etc. to achieve drilling operations. The high-pressure cuttings flow (25 MPa) generated during the operation passes through the inner cavity of the hollow main shaft from bottom to top and is discharged through an external connection assembly.

[0003] In order to test the sealing performance of the deep well drilling rig under the designed working conditions, it is necessary to conduct a pressure test on the power head of the deep well drilling rig. During the pressure test, it is necessary to block both ends of the power head and only retain an inlet for high-pressure medium. Since the overall height of the power head after assembly is close to 2 meters, after the staff installs a plug at the lower end of the power head at a lower position, they need to move to a higher position to install a sealing cover plate on the upper end of the power head. After the test, they still need to move up and down to remove the relevant sealing parts, frequently adjusting the working height, which poses a certain safety risk and low work efficiency. Especially when installing the sealing cover plate on the upper end, the staff needs to move to a higher position, which is not only inconvenient to operate but also has potential safety risks. Summary of the Utility Model

[0004] The utility model aims to provide a fixing mechanism and a routine test device for a power head of a deep well drilling rig to alleviate the technical problems of too high assembly height and inconvenient operation during the detection of the power head.

[0005] To achieve the above purpose, the specific solution adopted by the utility model is as follows: A fixing mechanism for a power head of a deep well drilling rig includes a fixed seat and two fixed frames spaced apart on the fixed seat. A connecting component is rotatably arranged on each fixed frame. The connecting component includes a flange and a rotating shaft fixed on the outer side of the flange. The inner sides of the two flanges face each other to form an installation space for fixing the power head of the deep well drilling rig to be tested. The rotating shaft is rotatably installed on the fixed frame, and a locking component capable of restricting the rotation of the rotating shaft is arranged between the fixed frame and the flange.

[0006] As a further optimization of the above technical solution, the locking component includes a locking bolt, at least one first positioning hole opened on the fixed frame, and a plurality of second positioning holes spaced apart on the flange. The first positioning hole is located on the rotation trajectory of the second positioning hole around the rotating shaft.

[0007] As a further optimization of the above technical solution, the second positioning hole is a strip-shaped hole.

[0008] As a further optimization of the above technical solution, the fixing frame includes a bracket and a mounting plate arranged on the bracket, the mounting plate is provided with an arc groove for installing the rotating shaft, and the first positioning hole is provided on the mounting plate.

[0009] As a further optimization of the above technical solution, the bracket includes legs and a mounting surface, and the mounting plate is arranged on the mounting surface.

[0010] A routine test device for a deep well drilling rig power head, the deep well drilling rig power head comprising a hollow main shaft and a gear reduction box for driving the hollow main shaft to rotate, the test device comprising the above-mentioned fixing mechanism, a pressurizing mechanism for applying high pressure to the inner cavity of the deep well drilling rig power head, and a power mechanism for driving the power head.

[0011] As a further optimization of the above technical solution, the pressurizing structure includes a hydraulic station, a plug for sealing the lower end of the hollow main shaft and a sealing cover plate for sealing the upper end of the hollow main shaft. The sealing cover plate is provided with an oil filling hole connected to the hydraulic station.

[0012] As a further optimization of the above technical solution, a one-way oil filling joint is provided in the oil filling hole, and the end of the oil outlet pipe of the hydraulic station is connected to the oil inlet of the one-way oil filling joint.

[0013] As a further optimization of the above technical solution, the power mechanism is a driving motor, and the power mechanism and the gear reduction box are connected through a belt drive.

[0014] As a further optimization of the above technical solution, a control mechanism is also included, and the pressurizing mechanism and the power mechanism are both connected to the control mechanism.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The power head fixing mechanism of the utility model can fix the power head removed from the deep well drilling rig, which is convenient for sealing detection of the power head. The fixing mechanism can realize the flipping and fixing of the power head, alleviating the problem of excessive assembly height. The utility model rotatably sets the power head on the fixing mechanism. During the assembly process, the part to be assembled can be adjusted to a lower position, and then the power head can be fixed by the locking mechanism, which is convenient for workers to perform assembly operations.

[0017] The utility model assembles the power head on a fixing mechanism, and delivers hydraulic oil to the hollow main shaft of the power head through a hydraulic station. The hollow main shaft is driven to rotate by a motor, thereby simulating the working state of the hollow main shaft during actual drilling operations, thereby performing targeted testing on the sealing performance of the power head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the fixing mechanism;

[0019] Figure 2 Schematic side view structure of the fixing mechanism;

[0020] Figure 3 Schematic structure of the flange;

[0021] Figure 4 Schematic structure of the connecting component;

[0022] Figure 5 Schematic connection diagram of the test device described in the present utility model;

[0023] Figure 6 Schematic side sectional view of the sealing cover plate;

[0024] Figure 7 Schematic side sectional view of the pulley coupling;

[0025] Reference numerals: 1, power head of deep well drilling rig, 101, gear reduction box, 102, hollow main shaft, 2, fixing mechanism, 201, fixing frame, 2011, mounting surface, 2012, leg, 202, locking bolt, 203, fixing bolt, 204, flange, 205, mounting plate, 206, arc groove, 207, rotating shaft, 208, second positioning hole, 209, first positioning hole, 210, fixing seat, 2101, connecting cross bar, 2102, connecting longitudinal bar, 2103, brace, 3, plug, 4, motor, 5, first pulley, 6, control mechanism, 7, pulley coupling, 701, second pulley, 703, end cover, 704, bearing, 705, support frame, 706, first sealing ring, 707, second sealing ring, 8, sealing cover plate, 801, cover plate body, 802, oil injection hole, 803, oil injection joint, 9, drive belt, 10, hydraulic station. Detailed implementation manners

[0026] The technical solutions of the present utility model will be further elaborated in detail below in combination with specific embodiments. For parts that are not described in detail and made public in the following embodiments of the present utility model, they should all be understood as the prior art known or should be known to those skilled in the art, such as the way the gear reduction box drives the hollow main shaft to rotate, the way the control mechanism controls the hydraulic station and the motor, etc.

[0027] Embodiment 1

[0028] As Figure 1 shown, this embodiment discloses a fixing mechanism for the power head of a deep well drilling rig, which is used for fixing the power head 1 of the deep well drilling rig during the sealing detection test. The power head 1 of the deep well drilling rig includes a hollow main shaft 102 and a gear reduction box 101 for driving the hollow main shaft 102 to rotate.

[0029] The fixing mechanism 2 includes two fixing brackets 201 arranged in parallel at intervals. Both of the two fixing brackets 201 are rectangular frames and are arranged vertically. A connecting component is rotatably arranged on each fixing bracket 201.

[0030] Combined Figure 4 As shown, the connecting component includes a flange 204 and a rotating shaft 207 fixed on the outer side of the flange 204. The inner sides of the two flanges 204 face each other to form an installation space for fixing the power head 1 of the deep well drilling rig to be tested. When this fixing mechanism is in use, the two flanges 204 are respectively fixed on both sides of the gear reduction box 101 of the power head. The flange 204 and the gear reduction box 101 are fixed through fixing bolts 203, so that the power head 1 of the deep well drilling rig can rotate around the rotating shaft 207 along with the flange 204. Among them, when installing the power head 1 of the deep well drilling rig, by controlling the installation position of the flange 204 on the gear reduction box 101, the rotation axis 207 line of the rotating shaft 207 is roughly coincident with the center of gravity of the power head, which can reduce the turning resistance. During the subsequent process of adjusting the angle of the power head, the power head can be manually pushed to rotate around the rotating shaft 207.

[0031] The rotating shaft 207 is rotatably installed on the fixing bracket 201. A locking component capable of restricting the rotation of the rotating shaft 207 is arranged between the fixing bracket 201 and the flange 204. When the locking component is locked, the power head 1 of the deep well drilling rig remains fixed on the fixing mechanism 2. After the locking component is unlocked, the power head 1 of the deep well drilling rig can rotate around the rotating shaft 207.

[0032] As a specific setting method of the locking component, the locking component includes a locking bolt 202, at least one first positioning hole 209 opened on the fixing bracket 201, and a plurality of second positioning holes 208 opened at intervals on the flange 204. The first positioning hole 209 is located on the rotation trajectory of the second positioning hole 208 around the rotating shaft 207. When the first positioning hole 209 and the second positioning hole 208 are aligned, the locking bolt 202 passes through the first positioning hole 209 and the second positioning hole 208 in sequence, thereby locking the flange 204 on the fixing bracket 201 and fixing the power head 1 of the deep well drilling rig at the current position.

[0033] As Figure 3 shown, the second positioning hole 208 is a long strip hole. The long strip hole can facilitate the alignment with the first positioning hole 209. As long as a part of the opening area of the long strip hole is aligned with the first positioning hole 209, the locking bolt 202 can pass through. Tightening the locking bolt 202 can lock the position of the flange 204 on the fixing bracket 201. Therefore, setting the second positioning hole 208 as a long strip hole can improve the working efficiency of the locking work.

[0034] Continue to refer to Figure 1 、 2, the fixing bracket 201 includes a bracket and a mounting plate 205 provided on the bracket. The bracket is a rectangular frame, including a mounting surface 2011 and multiple legs 2012 for supporting the mounting surface 2011. In this embodiment, each bracket includes two legs 2012. At the upper ends of the two legs 2012, a connecting cross beam is provided. The connection between the connecting cross beam and the legs 2012 is by welding; the cross section of the connecting cross beam is square, and the upper surface of the connecting cross beam is the mounting surface 2011 of the bracket, and the mounting surface 2011 is strip-shaped.

[0035] The mounting plate 205 is a strip-shaped plate and is vertically provided on the mounting surface 2011. The length direction of the mounting plate 205 is the same as the length direction of the mounting surface 2011 and the plate surface of the mounting plate 205 is perpendicular to the mounting surface 2011. Boltholes adapted to each other are respectively provided on the lower end surface of the mounting plate 205 and the mounting surface 2011. Therefore, the mounting plate 205 and the mounting surface 2011 are fixed in a bolt connection manner. It can be understood that the mounting plate 205 and the mounting surface 2011 can also be fixed by other means, such as welding, etc.

[0036] An arc-shaped groove 206 for mounting the rotating shaft 207 is provided on the upper end surface of the mounting plate 205, and the arc-shaped groove 206 is located in the middle of the mounting plate 205. The first positioning hole 209 of the locking assembly is provided on the plate body of the mounting plate 205. In this embodiment, the first positioning hole 209 is provided as two and is symmetrically arranged on both sides of the arc-shaped groove 206. Any first positioning hole 209 corresponding to the second positioning hole 208 can achieve the locking of the locking assembly.

[0037] To improve the stability of the fixing bracket 201, the fixing bracket 201 is provided on a fixing base 210. The fixing base 210 includes two parallel connecting cross bars 2101 and two parallel connecting longitudinal bars 2102. The two connecting longitudinal bars 2102 are provided at the lower ends of the two legs 2012 of the same fixing bracket 201, and the length of the two connecting longitudinal bars 2102 is greater than the distance between the two legs 2012. The two connecting cross bars 2101 are provided between the two corresponding legs 2012 of the two fixing brackets 201.

[0038] Furthermore, a diagonal brace 2103 is provided between the connecting cross bar 2101 and the leg 2012, thereby further improving the stability of the fixing bracket 201. The connection manners between the connecting cross bar 2101, the connecting longitudinal bar 2102, the leg 2012 and the diagonal brace 2103 are all by welding.

[0039] Since the overall height of the power head 1 of the deep well drilling rig is close to 2 meters, during the inspection test, it is first necessary to carry out corresponding assembly work on the upper and lower ends of the power head 1 of the deep well drilling rig. Through the fixing mechanism provided by the present utility model, the flipping and fixing of the power head can be realized, alleviating the problems of too high assembly height and inconvenient operation for the staff during the subsequent assembly before inspecting the power head.

[0040] Embodiment 2

[0041] As Figure 5 shown, this embodiment discloses a routine test device for the power head of a deep well drilling rig, including the power head 1 of the deep well drilling rig as described in Embodiment 1, a pressurizing mechanism for applying high pressure to the inner cavity of the hollow main shaft 102, a power mechanism for driving the gear reduction box 101, and a control mechanism 6 for controlling the test process.

[0042] The pressurizing mechanism includes a hydraulic station 10, a plug 3, and a sealing cover plate 8. The plug 3 and the sealing cover plate 8 are respectively blocked at both ends of the hollow main shaft 102. Specifically, the plug 3 is blocked at the lower end of the hollow main shaft 102, and the sealing cover plate 8 is blocked at the upper end of the hollow main shaft 102. As Figure 6 shown, an oil injection hole 802 communicating with the hydraulic station 10 is opened on the cover body 801 of the sealing cover plate 8. An oil injection joint 803 is arranged in the oil injection hole 802, and the end of the oil outlet pipe of the hydraulic station 10 is communicated with the inlet end of the oil injection joint 803. Since the hollow main shaft 102 will rotate automatically under the drive of the gear reduction box 101 during the test, a dynamic sealing joint is arranged at the connection between the end of the oil outlet pipe of the hydraulic station 10 and the oil injection joint 8 for specific dynamic sealing joints and plugs 3 are commercially available products, and their structures are prior art and will not be elaborated here.

[0043] Before the formal inspection test, it is necessary to assemble the power head 1 of the deep well drilling rig. Specifically, the staff needs to install the plug 3 at the lower end of the power head and then install the sealing cover plate 8 on its upper end. Therefore, when installing the sealing cover plate 8 on the upper end, the staff needs to move to a higher position, which is not only inconvenient to operate but also has potential safety risks. Through the test method of the present utility model, the power head 1 of the deep well drilling rig is rotatably arranged on the fixing mechanism 2. During the assembly process, the power head is first rotated to adjust the part to be assembled to a lower position, and then the power head is fixed through the locking mechanism, facilitating the assembly operation for the staff.

[0044] The power mechanism is a driving motor 4, and the driving motor 4 and the gear reduction box 101 are connected by a transmission belt 9. Specifically, a first pulley 5 is arranged on the output shaft of the driving motor 4, and a pulley coupling 7 is connected to the input shaft of the gear reduction box 101.

[0045] As a specific structure of the pulley coupling 7, asFigure 7 As shown, the pulley coupling 7 includes a transmission shaft 702 and a second pulley 701 provided at one end of the transmission shaft 702. The second pulley 701 is drivingly connected to the first pulley 5 through a transmission belt 9, and the other end of the transmission shaft 702 is drivingly connected to the gear reduction box 101. The transmission shaft 702 is installed in the support frame 705 through bearings 704 and an end cover 703. The end cover 703 is fixedly connected to the support frame 705 by bolts. A first sealing ring 706 is provided between the transmission shaft 702 and the support frame 705, and a second sealing ring 707 is provided between the transmission shaft 702 and the end cover 703. The support frame 705 is installed on the housing of the gear reduction box 101 by bolt connection, and the transmission shaft 702 is drivingly connected to the gears in the gear reduction box 101.

[0046] In addition, other existing pulley couplings can also be used, as long as it is ensured that the transmission connection between the gear reduction box 101 and the motor 4 can be achieved.

[0047] The control mechanism 6 is connected to the motor 4 and the hydraulic station 10. The control mechanism 6 includes an integrated control console, which centrally controls the start / stop, speed, and rotation direction of the motor 4, as well as the start / stop and output oil pressure of the hydraulic station 10. All preset parameters and monitoring data are real-time monitored on the central control screen in a digital display form.

[0048] The usage method of the present utility model includes the following steps:

[0049] S1: Place the power head 1 of the deep well drilling rig between two fixed frames 201, and fix the two sides of the gear reduction box 101 to the flange plates 204 of the two fixing mechanisms 2 respectively;

[0050] S2: Remove the locking bolts 202 from the first positioning holes 209 and the second positioning holes 208, and rotate the power head 1 of the deep well drilling rig to adjust the inclination angle of the hollow main shaft 102:

[0051] When the lower end of the hollow main shaft 102 is adjusted to the target height and the first positioning hole 209 and the second positioning hole 208 correspond, sequentially pass the locking bolts 202 through the first positioning hole 209 and the second positioning hole 208 to lock the relative positions of the flange plate 204 and the fixed frame 201, and then block the lower end of the hollow main shaft 102 with a plug 3; continue to rotate the power head 1 of the deep well drilling rig. When the upper end of the hollow main shaft 102 is adjusted to the target height and the first positioning hole 209 and the second positioning hole 208 correspond, once again sequentially pass the locking bolts 202 through the first positioning hole 209 and the second positioning hole 208 to lock the flange plate 204 and the fixed frame 201, block the upper end of the hollow main shaft 102 with a sealing cover plate 8, and connect the oil outlet pipe of the hydraulic station 10 to the oil injection hole 802 of the sealing cover plate 8;

[0052] S3: Finally, adjust the power head 1 of the deep well drilling rig to the target tilt angle and fix it. Apply high-pressure oil into the hollow main shaft 102 through the hydraulic station 10 for a pressure test, and start the motor 5 to keep the hollow main shaft 102 rotating for a trial run;

[0053] S4: After the pressure in the hollow main shaft 102 is stabilized by pressurization, keep the pressure for 15 - 30 minutes and observe whether the high-pressure oil in the hollow main shaft 102 leaks. Specifically, a leak detector, which is a commercially available product, can be used to detect whether the high-pressure oil in the hollow main shaft 102 leaks.

[0054] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fixing mechanism for the power head of a deep well drilling rig, characterized in that, It includes a fixed seat (210) and two fixed brackets (201) spaced apart on the fixed seat (210). A connecting component is rotatably arranged on each fixed bracket (201). The connecting component includes a flange plate (204) and a rotating shaft (207) fixed on the outer side of the flange plate (204). The inner sides of the two flange plates (204) face each other to form an installation space for fixing the power head (1) of the deep well drilling rig to be tested. The rotating shaft (207) is rotatably installed on the fixed bracket (201), and a locking component capable of restricting the rotation of the rotating shaft (207) is arranged between the fixed bracket (201) and the flange plate (204).

2. The fixing mechanism of the power head of a deep well drilling rig according to claim 1, characterized in that, The locking component includes a locking bolt (202), at least one first positioning hole (209) opened on the fixed bracket (201), and a plurality of second positioning holes (208) spaced apart on the flange plate (204). The first positioning hole (209) is located on the rotation trajectory of the second positioning hole (208) rotating around the rotating shaft (207).

3. The fixing mechanism of the power head of a deep well drilling rig according to claim 1, characterized in that, The second positioning hole (208) is a strip-shaped hole.

4. The fixing mechanism of a power head of a deep well drilling rig according to claim 2, characterized in that, The fixed bracket (201) includes a bracket and a mounting plate (205) arranged on the bracket. An arc-shaped groove (206) for installing the rotating shaft (207) is opened on the mounting plate (205), and the first positioning hole (209) is opened on the mounting plate (205).

5. The fixing mechanism of the power head of a deep well drilling rig according to claim 1, characterized in that, The bracket includes a leg (2012) and a mounting surface (2011), and the mounting plate (205) is arranged on the mounting surface (2011).

6. A routine test device for the power head of a deep well drilling rig, the power head (1) of the deep well drilling rig comprising a hollow main shaft (102) and a gear reduction box (101) for driving the hollow main shaft (102) to rotate, characterized in that: The test device includes a fixing mechanism (2) as described in any one of claims 1-5, a pressurizing mechanism for applying high pressure to the inner cavity of the power head (1) of the deep well drilling rig, and a power mechanism for driving the power head (1).

7. The routine test device for the power head of a deep well drilling rig according to claim 6, characterized in that: The pressurizing structure includes a hydraulic station (10), a plug (3) for blocking the lower end of the hollow main shaft (102), and a sealing cover plate (8) for sealing the upper end of the hollow main shaft ( 8. The routine test device for the power head of a deep well drilling rig according to claim 7, characterized in that: ​ 9. The routine test device for the power head of a deep well drilling rig according to claim 6, characterized in that: ​ 10. The routine test device for the power head of a deep well drilling rig according to claim 6, characterized in that: ​

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