Underwater laying device for offshore oil and gas pipeline

Abstract

The utility model relates to the field of pipeline laying devices, in particular to a marine oil and gas pipeline underwater laying device which comprises a gravity block, a connecting frame, a connecting plate and a grabbing mechanism. A balancing weight is arranged at the top of the gravity block; the connecting frame is rotationally arranged on the gravity block, and a rotating mechanism for driving the connecting frame to rotate is arranged on the gravity block; the connecting plate is slidably arranged on the connecting frame, and a sliding mechanism for driving the connecting plate to slide is arranged on the connecting frame; and the grabbing mechanism is arranged on the connecting plate in a sliding mode, and a guide mechanism for driving the grabbing mechanism to slide is arranged on the connecting plate. According to the utility model, if the grabbing mechanism cannot perform lifting work, manpower possibly needs to perform more operations to collect and transport materials required for laying the pipeline, but the lifting grabbing mechanism can reduce the time and the quantity of manual intervention, so that the working efficiency is improved; and materials required during pipeline laying can be accurately captured and placed, so that the laying precision and quality of the pipeline are improved.

Description

Technical Field

[0001] The utility model relates to the field of pipeline laying devices, in particular to an underwater laying device for marine oil and gas pipelines. Background Art

[0002] Offshore oil and gas pipelines refer to pipeline systems used to transport oil and natural gas extracted from submarine oil and gas fields to land or other facilities; they are key components connecting submarine oil and gas production platforms or wellheads with onshore processing facilities or other transportation destinations; offshore oil and gas pipelines are usually composed of steel pipes that can withstand the corrosion and pressure of seawater, high pressure and various environmental conditions.

[0003] The Chinese patent with the authorization announcement number CN220134796U discloses an underwater pipeline laying equipment, including: a support frame, the upper part of the support frame is fixedly connected with a cross beam, the right side of the cross beam is fixedly connected with a counterweight frame, the inner bottom wall of the counterweight frame is fixedly connected with a positioning column, the positioning column is provided with a counterweight block, the left part of the cross beam is slidably connected with a sliding sleeve, and the lower part of the sliding sleeve is fixedly connected with a mounting frame. Through the support frame, cross beam, and counterweight frame, when in use, only one side position needs to be occupied, the floor space is small, and it is very suitable for the use requirements of small spaces. The overall structure is reasonable and very practical to use; the sliding sleeve, screw rod, screw nut, motor, and clamping mechanism can complete the laying of underwater pipelines in different positions, with a wide laying coverage and stable control.

[0004] However, the device still has some shortcomings: the device cannot lift the pipeline, so it is not convenient to take and place the pipeline, which reduces the pipeline laying efficiency to a certain extent. Utility Model Content

[0005] The utility model aims to solve the problem that pipelines cannot be lifted or lowered in the background technology, and proposes an underwater laying device for marine oil and gas pipelines.

[0006] The technical solution of the utility model is: an underwater laying device for marine oil and gas pipelines, comprising:

[0007] A gravity block with a counterweight block on top;

[0008] The connecting frame is rotatably arranged on the gravity block, and the gravity block is provided with a rotating mechanism for driving the connecting frame to rotate;

[0009] The connecting plate is slidably arranged on the connecting frame, and the connecting frame is provided with a sliding mechanism for driving the connecting plate to slide;

[0010] The grabbing mechanism is slidably arranged on the connecting plate, and the connecting plate is provided with a guiding mechanism for driving the grabbing mechanism to slide.

[0011] Preferably, the rotating mechanism comprises:

[0012] Motor a is arranged in the gravity block, and gear a is arranged on the output shaft of motor a;

[0013] The connecting column is arranged at the bottom of the connecting frame and is located in the gravity block. A gear b is arranged on the connecting column, and the gear b is meshed with the gear a.

[0014] Preferably, the sliding mechanism comprises:

[0015] Motor b, arranged in the connection frame;

[0016] A threaded column is vertically rotatably arranged in the connection frame and connected to the output shaft of the motor b;

[0017] A guide rod is arranged in the connection frame and located on one side of the threaded column;

[0018] The connecting block is slidably arranged on the connecting frame, a threaded hole for rotating with the threaded column is provided on one side of the connecting block, a through hole for the guide rod to pass through is provided on the other side of the connecting block, and a connecting plate is arranged on one side of the connecting block.

[0019] Preferably, a sliding groove is provided on the connecting frame for the connecting block to slide up and down.

[0020] Preferably, the guiding mechanism comprises:

[0021] A motor c is arranged in the connecting plate;

[0022] A threaded rod, one end of which is connected to the output shaft of the motor c, and the other end of which is rotatably connected to the inner wall of the connecting plate;

[0023] The sliding block is slidably arranged on the connecting plate and is provided with a threaded hole for rotating in cooperation with the threaded rod. A connecting frame is arranged at the bottom of the sliding block.

[0024] Preferably, the gripping mechanism comprises:

[0025] Electric push rods are arranged on both sides of the connecting frame;

[0026] The gripper is connected with the telescopic end of the electric push rod, and the pipeline body is placed on the gripper.

[0027] Compared with the prior art, the utility model has the following beneficial technical effects:

[0028] By setting a connecting plate, a sliding arrangement is made on a connecting frame, and a sliding mechanism is provided on the connecting frame to drive the connecting plate to slide. For example, if the grabbing mechanism cannot perform lifting work, manpower may need to perform more operations to collect and transport materials required for laying the pipeline. However, after adding a liftable grabbing mechanism, the time and amount of manual intervention can be reduced, thereby improving work efficiency; and the materials required for pipeline laying can be accurately captured and placed, thereby improving the laying accuracy and quality of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the rotating mechanism;

[0031] Figure 3 It is a structural diagram of the sliding mechanism.

[0032] Figure numerals: 1. gravity block; 2. counterweight block; 3. connecting frame; 4. lifting ring; 5. connecting plate; 6. pipe body; 7. motor a; 8. connecting column; 9. gear a; 10. gear b; 11. motor b; 12. threaded column; 13. guide rod; 14. connecting block; 15. motor c; 16. threaded rod; 17. sliding block; 18. connecting frame; 19. electric push rod; 20. gripper. DETAILED DESCRIPTION

[0033] Embodiment 1

[0034] like Figure 1-Figure 3 As shown, the utility model proposes an underwater laying device for marine oil and gas pipelines, comprising a gravity block 1, a connecting frame 3, a connecting plate 5 and a grabbing mechanism;

[0035] A gravity block 1 is provided with a counterweight block 2 on the top; a connecting frame 3 is rotatably arranged on the gravity block 1, and a rotating mechanism for driving the connecting frame 3 to rotate is arranged on the gravity block 1; the connecting frame 3 is rotatably connected to the counterweight block 2, and a lifting ring 4 is arranged on the top of the connecting frame 3, and the lifting ring 4 is used to lift the laying device out of the water; a connecting plate 5 is slidably arranged on the connecting frame 3, and a sliding mechanism for driving the connecting plate 5 to slide is arranged on the connecting frame 3; a grabbing mechanism is slidably arranged on the connecting plate 5, and a guiding mechanism for driving the grabbing mechanism to slide is arranged on the connecting plate 5.

[0036] like Figure 2 As shown, the rotating mechanism includes a motor a7 and a connecting column 8; wherein the motor a7 is arranged in the gravity block 1, and a gear a9 is arranged on the output shaft of the motor a7; the connecting column 8 is arranged at the bottom of the connecting frame 3 and located in the gravity block 1, and a gear b10 is arranged on the connecting column 8, and the gear b10 is meshed with the gear a9.

[0037] like Figure 3 As shown, the sliding mechanism includes a motor b11, a threaded column 12, a guide rod 13 and a connecting block 14; wherein the motor b11 is arranged in the connecting frame 3; the threaded column 12 is vertically rotatably arranged in the connecting frame 3 and is connected to the output shaft of the motor b11; the guide rod 13 is arranged in the connecting frame 3 and is located on one side of the threaded column 12; the connecting block 14 is slidably arranged on the connecting frame 3, a threaded hole for cooperating with the threaded column 12 for rotation is provided on one side of the connecting block 14, a through hole for the guide rod 13 to pass through is provided on the other side of the connecting block 14, and the connecting plate 5 is arranged on one side of the connecting block 14; a sliding groove for the connecting block 14 to slide up and down is provided on the connecting frame 3.

[0038] Embodiment 2

[0039] The utility model proposes an underwater laying device for marine oil and gas pipelines. Compared with the first embodiment, the present embodiment further describes the structures of the guiding mechanism and the grasping mechanism in detail.

[0040] like Figure 3 As shown, the guide mechanism includes a motor c15, a threaded rod 16 and a sliding block 17; wherein the motor c15 is arranged in the connecting plate 5; the threaded rod 16 has one end connected to the output shaft of the motor c15, and the other end is rotatably connected to the inner wall of the connecting plate 5; the sliding block 17 is slidably arranged on the connecting plate 5 and has a threaded hole for rotating with the threaded rod 16, and a connecting frame 18 is arranged at the bottom of the sliding block 17; the grasping mechanism includes an electric push rod 19 and a gripper 20; wherein the electric push rod 19 is arranged on both sides of the connecting frame 18; the gripper 20 is connected to the telescopic end of the electric push rod 19, and the pipe body 6 is placed on the gripper 20.

[0041] In summary, when the utility model is in use, the laying device is first placed into the water bottom through a crane, and then the pipes to be laid are placed on the water bottom, and then the motor a7 is turned on, the motor a7 drives the gear a9 to rotate, and the gear a9 drives the connecting frame 3, the connecting column 8 and the gear b10 to rotate, thereby driving the grabbing mechanism to rotate, so that the pipe body 6 at different positions can be grabbed, so as to facilitate the pipe laying work. When the pipe body 6 is at different heights, the motor b11 is turned on, and the motor b11 drives the threaded column 12 to rotate, thereby driving the connecting block 14, the connecting plate 5 and the grabbing mechanism to move up and down, so that it can be flexibly adjusted according to the different heights of the pipe body 6. If the grabbing mechanism cannot be lifted, manpower may need to perform more operations to collect and transport the materials required for laying the pipe. However, after adding a liftable grabbing mechanism, the time and amount of manual intervention can be reduced, thereby improving work efficiency; and the materials required for pipe laying can be accurately captured and placed, thereby improving the laying accuracy and quality of the pipe.

[0042] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An underwater laying device for marine oil and gas pipelines, characterized in that: include: A gravity block (1) with a counterweight block (2) disposed on the top; A connecting frame (3) is rotatably mounted on the gravity block (1), and a rotating mechanism for driving the connecting frame (3) to rotate is disposed on the gravity block (1); A connecting plate (5) is slidably arranged on the connecting frame (3), and a sliding mechanism for driving the connecting plate (5) to slide is arranged on the connecting frame (3); The grabbing mechanism is slidably arranged on the connecting plate (5), and the connecting plate (5) is provided with a guide mechanism for driving the grabbing mechanism to slide.

2. The underwater laying device for marine oil and gas pipelines according to claim 1 is characterized in that: The rotating mechanism includes: A motor a (7) is arranged in the gravity block (1), and a gear a (9) is arranged on the output shaft of the motor a (7); A connecting column (8) is arranged at the bottom of the connecting frame (3) and is located in the gravity block (1). A gear b (10) is arranged on the connecting column (8), and the gear b (10) is meshed with the gear a (9).

3. The underwater laying device for marine oil and gas pipelines according to claim 1 is characterized in that: The sliding mechanism includes: A motor b (11) is arranged in the connection frame (3); A threaded column (12) is vertically rotatably arranged in the connection frame (3) and connected to the output shaft of the motor b (11); A guide rod (13) is arranged in the connection frame (3) and is located on one side of the threaded column (12); A connecting block (14) is slidably arranged on the connecting frame (3); a threaded hole for rotating in cooperation with the threaded column (12) is provided on one side of the connecting block (14); a through hole for the guide rod (13) to pass through is provided on the other side of the connecting block (14); and a connecting plate (5) is arranged on one side of the connecting block (14).

4. The underwater laying device for marine oil and gas pipelines according to claim 3 is characterized in that: The connection frame (3) is provided with a sliding groove for the connection block (14) to slide up and down.

5. The underwater laying device for marine oil and gas pipelines according to claim 1, characterized in that: The guiding mechanism includes: A motor c (15) is arranged in the connecting plate (5); A threaded rod (16), one end of which is connected to the output shaft of the motor c (15), and the other end of which is rotatably connected to the inner wall of the connecting plate (5); The sliding block (17) is slidably arranged on the connecting plate (5) and is provided with a threaded hole for rotating in cooperation with the threaded rod (16). A connecting frame (18) is arranged at the bottom of the sliding block (17).

6. The underwater laying device for marine oil and gas pipelines according to claim 1, characterized in that: The gripping mechanism includes: Electric push rods (19) are arranged on both sides of the connecting frame (18); The gripper (20) is connected to the telescopic end of the electric push rod (19), and the pipeline body (6) is placed on the gripper (20).

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