Blowout preventer moving device for petroleum drilling machine

Abstract

The blowout preventer moving device for the petroleum drilling machine comprises a petroleum drilling floor, four supporting columns are fixed to the top face of the petroleum drilling floor, a top plate is fixed to the top ends of the four supporting columns, an annular plate is connected between the four supporting columns in a sliding mode, and a rectangular block is connected between the front inner wall and the rear inner wall of the annular plate in a sliding mode. A driving mechanism is arranged on the petroleum drill floor and comprises two air cylinders fixed to the top face of the petroleum drill floor, two guide wheels are fixed to the bottom face of the top plate, connecting ropes are fixed to the top ends of the air cylinders, and a motor is fixed to the inner wall of the left side of the annular plate. A lead screw which horizontally penetrates through the rectangular block and is in threaded connection with the rectangular block is fixed to the left end of an output shaft of the motor, and two guide rods are fixed between the inner walls of the left side and the right side of the annular plate. According to the blowout preventer moving device for the petroleum drilling machine, through the guiding effect of the supporting column and the annular plate, the stability in the moving process is greatly guaranteed, and inconvenience caused by shaking of a blowout preventer in the moving process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of a blowout preventer mobile device for an oil drilling rig, in particular to a blowout preventer mobile device for an oil drilling rig. Background Art

[0002] Blowout preventers are used to close wellheads during oil, well repair, and well completion operations to prevent blowout accidents. They combine full sealing and semi-sealing functions into one, and have the characteristics of simple structure, easy operation, and high pressure resistance. They are commonly used safety sealing wellhead devices to prevent blowouts in oil fields. Blowout preventers are heavy, and when they need to be installed, the surrounding space is relatively narrow and the crane is limited and inconvenient to operate. Therefore, a blowout preventer mobile device for oil rigs is used to move the blowout preventer.

[0003] For example, a Chinese patent (publication number: CN217516541U) discloses a mobile device for a blowout preventer for an oil drilling rig, comprising a drilling platform, a cylinder, a polished rod, a support frame, a polished rod, a rack, a support rod, a support plate, a pulley, a vertical plate, a driving mechanism and a lifting mechanism. Four groups of cylinders are arranged on the top of the drilling platform, and the four groups of polished rods are respectively inserted into the cylinders. The tops of the four groups of polished rods are all connected to the bottom of the support frame. An opening is arranged on the support frame, and two groups of polished rods are both installed in the openings. The polished rods are square, and multiple groups of pulleys are respectively arranged on the tops of the two groups of polished rods. Square openings are respectively arranged on the two groups of racks. The two groups of polished rods are respectively in the square openings, and the multiple groups of pulleys are respectively in contact with the tops of the square openings. Two groups of support rods are arranged at the bottoms of the two groups of racks. The bottoms of the four groups of support rods are all connected to the top of the support plate. There is a guide rope opening on the support plate. The lifting mechanism is installed on the top of the support plate, and the driving mechanism is installed on the top of the support frame for the left and right movement of the two groups of racks.

[0004] However, the above search patent still has some shortcomings. When moving the blowout preventer, the blowout preventer is lifted by a wire rope in cooperation with a hook, and then the blowout preventer is driven to move horizontally. During the horizontal movement, the blowout preventer lacks a limit fixing structure, which is prone to shaking and thus affects the safe and stable movement of the blowout preventer. It is inconvenient to use, so a blowout preventer moving device for an oil drilling rig is proposed to solve the above problem. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a mobile device for a blowout preventer for an oil drilling rig, which has the advantages of being easy to use, safe and stable, and solves the problem that the device disclosed in the above-mentioned search patent easily causes the blowout preventer to shake during use and has low safety and stability.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mobile device for a blowout preventer for an oil drilling rig, comprising an oil drilling platform, four support columns are fixed on the top surface of the oil drilling platform, top plates are fixed on the tops of the four support columns, an annular plate is slidably connected between the four support columns, a rectangular block is slidably connected between the front and rear inner walls of the annular plate, a driving mechanism for driving the rectangular block to move left and right and up and down is provided on the oil drilling platform, and a fixing mechanism for fixing the blowout preventer is provided on the rectangular block;

[0007] The driving mechanism includes two cylinders fixed to the top surface of the oil drilling platform, two guide wheels are fixed to the bottom surface of the top plate, a connecting rope with one end passing around the guide wheels and fixed to the top surface of the annular plate is fixed to the top of the cylinder, a motor is fixed to the left inner wall of the annular plate, a screw rod that horizontally penetrates the rectangular block and is threadedly connected to the rectangular block is fixed to the left end of the motor output shaft, and two guide rods that horizontally penetrate the rectangular block and are slidably connected to the rectangular block are fixed between the left and right inner walls of the annular plate.

[0008] Furthermore, the fixing mechanism includes a guide block slidably connected to the bottom surface of the rectangular block, the bottom surface of the rectangular block is provided with a guide groove for the guide block to be slidably connected, the bottom surface of the guide block is fixed with an L-shaped rod, the top surface of the rectangular block is fixed with a circular cylinder, the top surface of the L-shaped rod is provided with a limiting hole, the top surface of the circular cylinder is slidably connected with a limiting rod whose bottom end passes through the rectangular block and extends to the inside of the limiting hole, an extrusion plate is fixed on the outer peripheral wall of the limiting rod, and a spring is mounted on the outer peripheral wall of the limiting rod.

[0009] Furthermore, the annular plate is a rectangular annular plate, the four support columns are respectively close to the four corners of the annular plate, and the top surface of the annular plate is provided with sliding holes for the support columns to pass through and be slidably connected thereto.

[0010] Furthermore, the two cylinders and guide wheels are distributed on the left and right sides of the annular plate, and the two connecting ropes are connected to the top surface of the annular plate and close to the left and right sides in an inverted U shape.

[0011] Furthermore, two guide holes for the guide rod to pass through and be slidably connected thereto are provided on the left side of the rectangular block, and a threaded hole for the screw rod to pass through and be threadedly connected thereto is provided on the left side of the rectangular block and located between the two guide holes.

[0012] Furthermore, the guide block is a T-shaped sliding block, the guide groove is a T-shaped sliding groove, the guide groove is used for allowing the guide block to slide forward and backward, and a handle is fixed to the top end of the limiting rod.

[0013] Furthermore, the top surfaces of the circular cylinder and the rectangular block are both provided with movable holes for the limiting rod to pass through and slide up and down inside, and the extrusion plate and the spring are both arranged in the circular cylinder and the spring is located above the extrusion plate.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The mobile blowout preventer device for oil drilling rigs can, when in use, drive the annular plate to slide up and down along the support column through the driving mechanism, and can also drive the rectangular block to slide left and right along the annular plate. The guiding effect of the support column and the annular plate greatly ensures the stability during the movement, avoids the inconvenience caused by the shaking of the blowout preventer during the movement, has better practicality, and is more convenient for popularization and use. The L-shaped rod provided by the fixing mechanism hooks the metal lifting ring on the blowout preventer, and then the limit rod and other structures are provided to limit and lock it, so as to prevent the blowout preventer from being separated from the L-shaped rod during the movement to cause danger, thereby further improving the safety of the mobile blowout preventer device for oil drilling rigs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the utility model;

[0017] Figure 2 It is a top view schematic diagram of the annular plate of the utility model;

[0018] Figure 3 It is a side view schematic diagram of the fixing mechanism of the utility model;

[0019] Figure 4 It is a three-dimensional schematic diagram of the L-shaped rod of the utility model.

[0020] In the figure: 1 oil drilling platform, 2 support column, 3 top plate, 4 annular plate, 5 rectangular block, 6 driving mechanism, 601 cylinder, 602 guide wheel, 603 connecting rope, 604 motor, 605 screw rod, 606 guide rod, 7 fixing mechanism, 701 guide block, 702 guide groove, 703 L-shaped rod, 704 circular cylinder, 705 limiting hole, 706 limiting rod, 707 extrusion plate, 708 spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2In the present embodiment, a mobile device for a blowout preventer for an oil drilling rig comprises an oil drilling platform 1, four supporting columns 2 are fixed on the top surface of the oil drilling platform 1, a top plate 3 is fixed on the top of the four supporting columns 2, an annular plate 4 is slidably connected between the four supporting columns 2, a rectangular block 5 is slidably connected between the front and rear inner walls of the annular plate 4, a driving mechanism 6 for driving the rectangular block 5 to move left and right and up and down is provided on the oil drilling platform 1, a fixing mechanism 7 for fixing the blowout preventer is provided on the rectangular block 5, the annular plate 4 is a rectangular annular plate, the four supporting columns 2 are respectively close to the four corners of the annular plate 4, and a sliding hole for the supporting columns 2 to penetrate and be slidably connected thereto is opened on the top surface of the annular plate 4. When in use, the annular plate 4 can be driven to slide up and down along the supporting columns 2 by the driving mechanism 6, and the rectangular block 5 can also be driven to slide left and right along the annular plate 4. Through the guiding effect of the supporting columns 2 and the annular plate 4, the stability during the movement is greatly guaranteed, and the inconvenience caused by the shaking of the blowout preventer during movement is avoided, the practicability is better, and it is more convenient to promote and use.

[0023] It should be noted that the control method of the present application is controlled by a controller, and the control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field, and the present application is mainly used to protect mechanical devices, so the present application will no longer explain the control method and circuit connection in detail.

[0024] See also Figure 1-2 The driving mechanism 6 includes two cylinders 601 fixed on the top surface of the oil drilling platform 1, two guide wheels 602 are fixed on the bottom surface of the top plate 3, and a connecting rope 603 with one end passing around the guide wheel 602 and fixed on the top surface of the annular plate 4 is fixed on the top of the cylinder 601. The two cylinders 601 and the guide wheel 602 are distributed on the left and right sides of the annular plate 4. The two connecting ropes 603 are connected to the top surface of the annular plate 4 in an inverted U shape and are close to the left and right sides. When in use, the cylinder 601 is started to contract, and the cylinder 601 drives one end of the connecting rope 603 to move downward, and then the other end cooperates with the guide wheel 602 to drive the annular plate 4 to slide upward stably along the support column 2, thereby driving the rectangular block 5 to move upward, and the rectangular block 5 drives the blowout preventer to move upward through the fixing mechanism 7, so as to achieve To improve the effect of the blowout preventer, a motor 604 is fixed on the inner wall on the left side of the annular plate 4, and a screw rod 605 is fixed on the left end of the output shaft of the motor 604, which horizontally penetrates the rectangular block 5 and is threadedly connected to it. Two guide rods 606 are fixed between the inner walls on the left and right sides of the annular plate 4, which horizontally penetrate the rectangular block 5 and are slidably connected to it. Two guide holes for the guide rod 606 to penetrate and be slidably connected to it are opened on the left side of the rectangular block 5, and a threaded hole for the screw rod 605 to penetrate and be threadedly connected to it is opened on the left side of the rectangular block 5 and located between the two guide holes. Further, the motor 604 is started, and the motor 604 drives the screw rod 605 to rotate, and the screw rod 605 drives the rectangular block 5 to slide horizontally along the guide rod 606, thereby driving the blowout preventer to move horizontally and completely leave the oil well.

[0025] See also Figure 3-4 In this embodiment, the fixing mechanism 7 includes a guide block 701 slidably connected to the bottom surface of the rectangular block 5, a guide groove 702 for sliding connection of the guide block 701 is provided on the bottom surface of the rectangular block 5, an L-shaped rod 703 is fixed on the bottom surface of the guide block 701, a circular cylinder 704 is fixed on the top surface of the rectangular block 5, a limiting hole 705 is provided on the top surface of the L-shaped rod 703, a limiting rod 706 whose bottom end penetrates the rectangular block 5 and extends to the inside of the limiting hole 705 is slidably connected to the top surface of the circular cylinder 704, the guide block 701 is a T-shaped slider, the guide groove 702 is a T-shaped slide groove, the guide groove 702 is used for the guide block 701 to slide back and forth, a handle is fixed on the top of the limiting rod 706, and the top surfaces of the circular cylinder 704 and the rectangular block 5 are provided with a handle for the limiting rod 70 6 penetrates through and slides up and down inside the movable hole. After moving the blowout preventer, the driving mechanism 6 is reversely operated to lower the blowout preventer, and then the limiting rod 706 is pulled upward to make it disengage from the limiting hole 705. At this time, the L-shaped rod 703 can be pushed to slide along the guide groove 702 and disengage from the metal lifting ring on the blowout preventer. An extrusion plate 707 is fixed on the outer peripheral wall of the limiting rod 706, and a spring 708 is sleeved on the outer peripheral wall of the limiting rod 706. The extrusion plate 707 and the spring 708 are both arranged in the circular cylinder 704 and the spring 708 is located above the extrusion plate 707. When fixing the blowout preventer, the above operation is reversed so that the limiting rod 706 drives the extrusion plate 707 to compress the spring 708, and then the limiting rod 706 is pushed by the spring 708 to be inserted into the limiting hole 705.

[0026] The working principle of the above embodiment is:

[0027] (1) When in use, the cylinder 601 is started to contract, and the cylinder 601 drives one end of the connecting rope 603 to move downward, and then the other end cooperates with the guide wheel 602 to drive the annular plate 4 to slide upward stably along the support column 2, and then drives the rectangular block 5 to move upward, and the rectangular block 5 drives the blowout preventer to move upward through the fixing mechanism 7. Further, the motor 604 is started, and the motor 604 drives the screw rod 605 to rotate, and the screw rod 605 drives the rectangular block 5 to slide horizontally along the guide rod 606, and then drives the blowout preventer to move horizontally and completely leave the oil well.

[0028] (2) After the BOP is moved, the driving mechanism 6 is operated in reverse to lower the BOP, and then the limiting rod 706 is pulled upward to disengage the limiting hole 705. At this time, the L-shaped rod 703 can be pushed to slide along the guide groove 702 and disengage the metal ring on the BOP. When fixing the BOP, the above operation is reversed so that the limiting rod 706 drives the extrusion plate 707 to compress the spring 708, and then the limiting rod 706 is pushed into the limiting hole 705 through the spring 708.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mobile blowout preventer device for an oil drilling rig, comprising an oil drilling platform (1), characterized in that: Four support columns (2) are fixed on the top surface of the oil drilling platform (1), top plates (3) are fixed on the top ends of the four support columns (2), annular plates (4) are slidably connected between the four support columns (2), a rectangular block (5) is slidably connected between the front and rear inner walls of the annular plate (4), a driving mechanism (6) for driving the rectangular block (5) to move left and right and up and down is provided on the oil drilling platform (1), and a fixing mechanism (7) for fixing the blowout preventer is provided on the rectangular block (5); The driving mechanism (6) comprises two cylinders (601) fixed on the top surface of the oil drilling platform (1), two guide wheels (602) fixed on the bottom surface of the top plate (3), a connecting rope (603) having one end passing around the guide wheels (602) and fixed on the top surface of the annular plate (4) is fixed on the top of the cylinder (601), a motor (604) is fixed on the left inner wall of the annular plate (4), a screw rod (605) that horizontally penetrates the rectangular block (5) and is threadedly connected to the rectangular block (5) is fixed on the left end of the output shaft of the motor (604), and two guide rods (606) that horizontally penetrate the rectangular block (5) and are slidably connected to the rectangular block (5) are fixed between the left and right inner walls of the annular plate (4).

2. The mobile device for a blowout preventer for a petroleum drilling rig according to claim 1, characterized in that: The fixing mechanism (7) comprises a guide block (701) slidably connected to the bottom surface of the rectangular block (5); the bottom surface of the rectangular block (5) is provided with a guide groove (702) for the guide block (701) to be slidably connected; the bottom surface of the guide block (701) is fixed with an L-shaped rod (703); the top surface of the rectangular block (5) is fixed with a circular cylinder (704); the top surface of the L-shaped rod (703) is provided with a limiting hole (705); the top surface of the circular cylinder (704) is slidably connected with a limiting rod (706) whose bottom end passes through the rectangular block (5) and extends to the inside of the limiting hole (705); an extrusion plate (707) is fixed on the outer peripheral wall of the limiting rod (706); and a spring (708) is sleeved on the outer peripheral wall of the limiting rod (706).

3. The mobile device for a blowout preventer for a petroleum drilling rig according to claim 1, characterized in that: The annular plate (4) is a rectangular annular plate, the four support columns (2) are respectively close to the four corners of the annular plate (4), and the top surface of the annular plate (4) is provided with sliding holes for the support columns (2) to pass through and be slidably connected thereto.

4. The mobile device for a blowout preventer for a petroleum drilling rig according to claim 1, characterized in that: The two cylinders (601) and the guide wheels (602) are distributed on the left and right sides of the annular plate (4), and the two connecting ropes (603) are connected to the top surface of the annular plate (4) and close to the left and right sides in an inverted U shape.

5. The mobile device for a blowout preventer for a petroleum drilling rig according to claim 1, characterized in that: The left side of the rectangular block (5) is provided with two guide holes for the guide rod (606) to pass through and be slidably connected thereto, and the left side of the rectangular block (5) and located between the two guide holes is provided with a threaded hole for the screw rod (605) to pass through and be threadedly connected thereto.

6. The mobile device for a blowout preventer for a petroleum drilling rig according to claim 2, characterized in that: The guide block (701) is a T-shaped sliding block, the guide groove (702) is a T-shaped sliding groove, the guide groove (702) is used for the guide block (701) to slide forward and backward, and a handle is fixed on the top end of the limiting rod (706).

7. The mobile device for a blowout preventer for a petroleum drilling rig according to claim 2, characterized in that: The top surfaces of the circular cylinder (704) and the rectangular block (5) are both provided with movable holes for the limiting rod (706) to pass through and slide up and down inside. The extrusion plate (707) and the spring (708) are both arranged inside the circular cylinder (704), and the spring (708) is located above the extrusion plate (707).

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