A subsea pipeline lifting butt joint spreader

Abstract

The utility model relates to submarine pipeline lifting appliance technical field discloses a submarine pipeline hoisting butt joint lifting appliance, including left hoist beam body and right hoist beam body, the lower end hinged installation of side baffle no.

Description

Technical Field

[0001] This utility model relates to the field of submarine pipeline lifting equipment technology, and in particular to a submarine pipeline lifting and docking lifting equipment. Background Technology

[0002] Subsea pipelines are pipeline systems laid on the seabed for transporting energy sources such as oil and natural gas. They are core facilities for offshore oil and gas field development, primarily connecting offshore oil and gas fields with onshore storage sites or terminals, enabling long-distance transportation of oil and gas. An existing type of subsea pipeline hoisting and docking tool (announcement number: CN222374154U) can clamp the pipeline through the clamping plates on both sides and the fixed plate. However, the fixed plate is fixed in position and cannot be flexibly adjusted, resulting in insufficient adaptability to the pipeline and a risk of falling off. In addition, the surface of the subsea pipeline is prone to the adhesion of moss, mud and other debris, which will reduce the friction between the clamping plate and the pipeline contact surface, further aggravating the slippage of the clamping, thereby affecting the stability and safety of hoisting and docking. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a lifting and docking tool for submarine pipelines.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A lifting and docking device for subsea pipelines includes a left lifting beam and a right lifting beam. Both the left and right lifting beams are fitted with fixed seats via fasteners. Each fixed seat has a guide groove, within which a second side baffle slides. A first side baffle is located on one side of the second side baffle. A bottom support plate is hinged to the lower end of the first side baffle, and bolts are hinged to the rear end of the bottom support plate. A lower pressure plate is located between the second side baffle and the first side baffle. A top arc-shaped plate is fixed to the bottom end of the lower pressure plate. An annular tube is installed on the outer wall of the lower pressure plate via clips. A second connecting rod is hinged between the top of the lower pressure plate and the second side baffle, and a first connecting rod is hinged between the lower pressure plate and the first side baffle.

[0005] As a further embodiment of this utility model, a threaded hole adapted to the bolt is provided on the side baffle.

[0006] As a further embodiment of this utility model, a hydraulic rod is hinged between the rear end of the side baffle and the inner wall of the fixed seat, and an air tank is installed on the fixed seat by fasteners.

[0007] As a further embodiment of this utility model, the outer wall of the gas storage tank is provided with a thin flexible tube, and the other end of the thin flexible tube is fixedly connected to an annular tube.

[0008] As a further embodiment of this utility model, a miniature valve is fixedly provided between the thin flexible tube and the gas storage tank, and several oblique air blowing holes are fixed at the bottom of the gas storage tank.

[0009] As a further embodiment of this utility model, multiple sets of lifting lugs are fixed to the top of both the left and right lifting beams.

[0010] As a further embodiment of this utility model, a hydraulic rod is hinged between the rear end of the side baffle and the inner wall of the fixed seat.

[0011] Compared with the prior art, the present invention has the following beneficial effects: When the subsea pipeline is hoisted and connected, the linkage structure can drive the top arc plate to move down synchronously during the adjustment of the two sets of side baffles. The air blowing structure on the top arc plate can first blow away debris from the pipe clamping surface, removing moss, silt and other adhering materials that can cause slippage. Then, a three-way encircling clamping system combining side clamps and top lifting is formed, ensuring that the radial force on the pipeline is balanced and not easy to shake. At the same time, the bottom support plates on both sides can be flexibly adapted to different pipe diameters through a simple adjustment structure, closely fitting the bottom of the pipeline to achieve lifting. This works in conjunction with the side clamps and top lifting, so that the pipeline can be firmly clamped without complicated operations, further improving the stability and adaptability during the hoisting process. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a submarine pipeline hoisting and docking lifting device proposed in this utility model; Figure 2 This is a cross-sectional structural diagram of a submarine pipeline hoisting and docking lifting device proposed in this utility model; Figure 3 for Figure 1 Enlarged diagram of point A in the diagram; Figure 4 for Figure 2 Enlarged diagram of point B in the diagram; Figure 5 This is a schematic diagram of the disassembled structure of the fixed base of a lifting and docking device for submarine pipelines proposed in this utility model.

[0013] In the diagram: 1. Left lifting beam; 2. Right lifting beam; 3. Lifting lug; 4. Fixing seat; 401. Side baffle one; 402. Side baffle two; 403. Bottom support plate; 404. Bolt; 405. Hydraulic rod one; 406. Hydraulic rod two; 407. Guide groove; 5. Lower pressure plate; 501. Top arc plate; 502. Connecting rod one; 503. Connecting rod two; 6. Air tank; 601. Ring pipe; 602. Thin hose; 603. Miniature valve; 604. Air blowing oblique hole. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Reference Figures 1-5 A type of lifting and docking device for submarine pipelines includes a left lifting beam 1 and a right lifting beam 2. Both the left and right lifting beams 1 and 2 are fitted with fixed seats 4 via fasteners. Each fixed seat 4 has a guide groove 407. A second side baffle 402 is slidably mounted within the guide groove 407. A first side baffle 401 is located on one side of the second side baffle 402. A bottom support plate 403 is hinged to the lower end of the first side baffle 401. A bolt 404 is hinged to the rear end of the bottom support plate 403. A lower pressure plate 5 is located between the second side baffle 402 and the first side baffle 401. A top arc-shaped plate 501 is fixed to the bottom end of the lower pressure plate 5. An annular pipe 601 is installed on the outer wall of the lower pressure plate 5 via a snap fastener. A second connecting rod 503 is hinged between the top of the lower pressure plate 5 and the second side baffle 402, and a first connecting rod 502 is hinged between the lower pressure plate 5 and the first side baffle 401.

[0018] By opening the micro valve 603, compressed air in the air storage tank 6 is delivered to the annular pipe 601 through the thin hose 602. Then, the pipe clamping surface is blew through the evenly distributed air blowing holes 604 on the annular pipe 601 to remove moss, mud, and other debris attached to the pipe surface. After blew, the micro valve 603 is closed, and the hydraulic rods 405 and 406 are operated to extend and retract synchronously, driving the side baffles 401 and 402 to move smoothly along the guide groove 407. The distance between the two sets of side baffles is adjusted to match the pipe diameter. During this process, the lower pressure plate 5 is driven to move down synchronously through the connecting rods 502 and 503 until the inner side of the top arc plate 501 is tightly attached to the top of the pipe. At the same time, the bolts 404 are turned in sequence. Under the action of the hinge, the bolts 404 push the bottom support plate 403 to flip, so that the bottom support plates 403 on both sides are tightly attached to the bottom of the pipe to achieve lifting.

[0019] In this embodiment, the side baffle 401 is provided with a threaded hole that matches the bolt 404.

[0020] The annular tube 601 is attached and fixed along the outer wall of the lower pressure plate 5, and the air blowing oblique hole 604 is designed at a 45-degree angle so that the blowing can accurately cover the pipe clamping surface.

[0021] In this embodiment, a hydraulic rod 405 is hinged between the rear end of the side baffle 401 and the inner side wall of the fixed base 4, and an air tank 6 is installed on the fixed base 4 by fasteners.

[0022] The 602 thin flexible hose is made of seawater-resistant, high-pressure rubber, and its length is designed to allow for lifting and movement to prevent breakage due to pulling.

[0023] In this embodiment, the outer wall of the gas storage tank 6 is provided with a thin hose 602, and the other end of the thin hose 602 is fixedly connected to an annular pipe 601.

[0024] The inner sides of side baffle 1 401, side baffle 2 402, top arc plate 501 and bottom support plate 403 are all covered with anti-slip pads, which increases the friction between the contact surface and the pipe.

[0025] In this embodiment, a micro valve 603 is fixed between the thin flexible tube 602 and the gas storage tank 6, and several air blowing oblique holes 604 are fixed at the bottom of the gas storage tank 6.

[0026] Both hydraulic rod 1 (405) and hydraulic rod 2 (406) adopt a low-pressure waterproof design.

[0027] In this embodiment, multiple sets of lifting lugs 3 are fixed to the top of both the left lifting beam 1 and the right lifting beam 2.

[0028] The overall structure, assembly components and functional design of side baffle 1 401 and side baffle 2 402 are completely identical, except that their installation positions are symmetrically distributed.

[0029] In this embodiment, a hydraulic rod 406 is hinged between the rear end of the side baffle 402 and the inner side wall of the fixed seat 4.

[0030] Linkage 1 502 and Linkage 2 503 serve as linkage components, which can convert the horizontal movement of Side Baffle 1 401 and Side Baffle 2 402 into the vertical lifting and lowering of Top Arc Plate 501, thereby achieving synchronous linkage between the side clamping and the upward lifting action.

[0031] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: When the submarine pipeline docking and hoisting work is carried out, the left lifting beam 1 and the right lifting beam 2 are hoisted and positioned by each set of lifting lugs 3. After the device is close to the pipeline, the operator can open the micro valve 603 through the ship's control terminal, so that the compressed air in the air storage tank 6 is delivered to the annular pipe 601 through the thin hose 602. Then, the pipe clamping surface is blown through the evenly distributed air blowing oblique holes 604 on the annular pipe 601 to remove the moss, mud and other debris attached to the pipe surface. After the blowing is completed, the micro valve 603 is closed, and then the hydraulic rod one 405 and the hydraulic rod two 406 are operated to extend and retract synchronously to drive the pipeline. Side baffle 1 401 and side baffle 2 402 move smoothly along guide groove 407, adjusting the distance between the two sets of side baffles to match the pipe diameter. During this process, the lower pressure plate 5 is driven to move down synchronously through connecting rod 1 502 and connecting rod 2 503 until the inner side of the top arc plate 501 is tightly attached to the top of the pipe. At the same time, the bolts 404 are turned in sequence. Under the action of hinge, the bolts 404 push the bottom support plate 403 to flip, so that the bottom support plates 403 on both sides are tightly attached to the bottom of the pipe to achieve lifting. Finally, by activating the hydraulic drive system set between the left lifting beam 1 and the right lifting beam 2, the pipe can be slowly moved to the preset docking position to achieve precise docking and safe lifting of the subsea pipeline.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A lifting and docking device for subsea pipelines, comprising a left lifting beam (1) and a right lifting beam (2), characterized in that: Both the left lifting beam (1) and the right lifting beam (2) are fitted with fixing seats (4) by fasteners. Each fixing seat (4) has a guide groove (407) inside. A second side baffle (402) is slidably installed in the guide groove (407). A first side baffle (401) is provided on one side of the second side baffle (402). A bottom support plate (403) is hinged to the lower end of the first side baffle (401). A bolt (403) is hinged to the rear end of the bottom support plate (403). 04), a lower pressure plate (5) is provided between the second side baffle (402) and the first side baffle (401). A top arc plate (501) is fixed at the bottom end of the lower pressure plate (5). An annular tube (601) is installed on the outer wall of the lower pressure plate (5) by a buckle. A connecting rod (503) is hinged between the top of the lower pressure plate (5) and the second side baffle (402), and a connecting rod (502) is hinged between the lower pressure plate (5) and the first side baffle (401).

2. The subsea pipeline hoisting and docking lifting tool according to claim 1, characterized in that, The side baffle (401) has a threaded hole that matches the bolt (404).

3. The subsea pipeline hoisting and docking lifting tool according to claim 1, characterized in that, A hydraulic rod (405) is hinged between the rear end of the side baffle (401) and the inner wall of the fixed seat (4), and an air tank (6) is installed on the fixed seat (4) by fasteners.

4. The subsea pipeline hoisting and docking lifting tool according to claim 3, characterized in that, The outer wall of the gas storage tank (6) is provided with a thin hose (602), and the other end of the thin hose (602) is fixedly connected to an annular pipe (601).

5. The subsea pipeline hoisting and docking lifting tool according to claim 4, characterized in that, A micro valve (603) is fixed between the thin flexible tube (602) and the gas storage tank (6), and a number of air blowing oblique holes (604) are fixed at the bottom of the gas storage tank (6).

6. The subsea pipeline hoisting and docking lifting tool according to claim 1, characterized in that, Multiple sets of lifting lugs (3) are fixed to the top of both the left lifting beam (1) and the right lifting beam (2).

7. The subsea pipeline hoisting and docking lifting tool according to claim 1, characterized in that, A hydraulic rod (406) is hinged between the rear end of the side baffle (402) and the inner wall of the fixed seat (4).

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