A marine thermal energy generation device for preventing swaying during pipeline operation.

Abstract

This invention discloses a sway-stopping device for offshore pipe installation in marine thermal energy conversion, comprising a sway-stopping frame and a load-bearing base. The sway-stopping frame includes a first sway-stopping mechanism, a second sway-stopping mechanism, and a third sway-stopping mechanism connected sequentially. The first sway-stopping mechanism includes an inclined support frame base and an inclined support frame. The inner sides of the two inclined support frames are connected by spaced-apart first and second inclined support frame tie rods, forming a first sway-stopping zone. The second sway-stopping mechanism includes a straight support frame base and a straight support frame. The inner sides of the two straight support frames are connected by spaced-apart three buffer rollers, forming a second sway-stopping zone. The third sway-stopping mechanism includes a clamping assembly. Two small clamps and two large clamps form a third sway-stopping zone. The sway-stopping ranges of the first, second, and third sway-stopping zones gradually decrease. This invention reduces the swaying during the hoisting and docking of cold water pipes through mechanical structural limiting, ensuring safety during offshore construction and improving construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of ocean thermal energy conversion technology, and in particular to an anti-sway device for offshore pipelines used in ocean thermal energy power generation. Background Technology

[0002] Ocean thermal energy conversion (OTEC) is a new energy technology that utilizes the temperature difference between deep cold seawater and surface warm seawater to generate electricity. The extraction of deep cold seawater is a key technical challenge. Deep-sea power generation construction usually uses large ships or platforms as carriers. Extracting cold seawater requires connecting cold water pipe sections to extend into the deep sea. Cold water pipe connections are usually made using threaded connections. However, due to the up-and-down movement and swaying of the construction vessel in the sea, the cold water pipes are constantly in a swaying state, making the connection of cold water pipes very difficult. Collisions between cold water pipe components can even cause damage to the cold water pipes.

[0003] Currently, there is no mature anti-sway device for lowering ocean thermal energy cold water pipes in China. The main method of anti-swaying relies on manual labor using anti-sway ropes. However, cold water pipes are long and lightweight, making it very difficult to use anti-sway ropes to limit the swaying. This method is not only unsafe but also time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of this invention is to provide a marine thermal energy conversion (TEC) power generation offshore pipe anti-sway device to solve the problems existing in the prior art. By limiting the movement of the cold water pipe during hoisting and docking through mechanical structure, the device can ensure the safety of offshore construction and improve construction efficiency.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides an anti-sway device for offshore pipe laying for ocean thermal energy generation, including an anti-sway frame and a load-bearing base. The load-bearing base is used for installation on a deck. The anti-sway frame includes a first anti-sway mechanism, a second anti-sway mechanism and a third anti-sway mechanism connected in sequence.

[0007] The first anti-sway mechanism includes a base of inclined support frame and two inclined support frames respectively fixedly connected to both ends of the base of inclined support frame. The base of inclined support frame is used to be fixedly installed on the deck. The two inclined support frames are arranged in a figure-eight shape. The inner sides of the two inclined support frames are connected by a first inclined support frame tie rod and a second inclined support frame tie rod respectively, which are arranged at intervals. The first inclined support frame tie rod, the second inclined support frame tie rod and the two inclined support frames form a first anti-sway zone.

[0008] The second anti-sway mechanism includes a straight support frame base and straight support frames respectively fixedly connected to both ends of the straight support frame base. The straight support frame base is used to fix it on the deck. The two straight support frames are parallel to each other. One end of the two straight support frames is fixedly connected to the straight support frame base, and the other end is fixedly connected to the load-bearing base. The inner sides of the two straight support frames are respectively connected by three buffer rollers arranged at intervals. The three buffer rollers and the two straight support frames form a second anti-sway zone.

[0009] The third anti-sway mechanism includes a clamping assembly, which comprises two large clamps vertically distributed and fixedly connected, and two small clamps connected between the two large clamps. One end of each of the two large clamps is fixedly provided with a clamping connecting plate. The clamping connecting plate is rotatably connected to one end of the straight support frame via a clamping connecting plate pin. The clamping connecting plate has a first pin hole and a second pin hole. The clamping connecting plate pin passes through the first pin hole or the second pin hole to connect to the straight support frame to open or close the large clamps. The other ends of the two large clamps are connected via a large clamping connecting pin. The two large clamps are connected by inserting the connecting pin of the large clamp and coordinating with the connecting pin of the clamp connecting plate to achieve the clamping of the two large clamps. The two large clamps are opened by removing the connecting pin. The inner side of the two large clamps is provided with a small clamp slide rail. The two small clamps are slidably connected to the small clamp slide rail. The two small clamps can slide along the small clamp slide rail to form a ring structure with the two large clamps as a third anti-sway zone. The inner diameter of the ring structure is equal to the outer diameter of the cold water pipe. The connecting plate connecting the two large clamps is provided with a locking device for locking the two small clamps.

[0010] One end of the constricted opening of each of the two inclined support frames is connected to one end of each of the two straight support frames, and the other end of each of the two straight support frames is rotatably connected to one end of each of the two large clamps through the clamp connecting plate pin. The anti-sway range of the first anti-sway zone, the second anti-sway zone, and the third anti-sway zone gradually decreases.

[0011] Preferably, the bottom end of the inclined support frame away from the straight support frame is welded to the base of the inclined support frame, and the bottom end of the inclined support frame near the straight support frame is welded and fixed to the base of the straight support frame. An inclined support frame support rib is also welded to the welded connection between the inclined support frame and the base of the inclined support frame and the base of the straight support frame.

[0012] Preferably, each of the inclined support frames has an inclined support frame tie rod connecting plate welded to its inner side, and the two ends of the first inclined support frame tie rod and the second inclined support frame tie rod are respectively connected to the inclined support frame tie rod connecting plate through tie rod pins.

[0013] Preferably, each of the straight support frames is fixedly connected to a straight support frame diagonal tie rod on its outer side, and a straight support frame diagonal tie rod base is fixedly provided at the lower end of the straight support frame diagonal tie rod, and the straight support frame diagonal tie rod base is fixedly installed on the load-bearing base.

[0014] Preferably, the inclined support frame is welded with a connecting stiffener plate at one end near the straight support frame, and the straight support frame is welded with a connecting stiffener plate at one end near the inclined support frame. Both the inclined support frame connecting stiffener plate and the straight support frame connecting stiffener plate are provided with stiffener plate connecting holes. A stiffener plate connecting pin is inserted into each of the stiffener plate connecting holes, and two stiffener plate connecting pins are connected by a stiffener plate connecting plate.

[0015] Preferably, the inner side of the small clamp is provided with a wear-resistant strip.

[0016] Preferably, the small clamp has a small clamp handle on its outer side.

[0017] Preferably, the inclined support frame base and the straight support frame base are connected to the deck by bolts.

[0018] Preferably, the locking device includes a limiting eye screw, and the small clamps are provided with elongated holes that cooperate with the limiting eye screw. After the two small clamps and the two large clamps form a ring structure, the two small clamps are locked by turning the limiting eye screw and inserting it into the elongated hole.

[0019] The present invention achieves the following technical effects compared to the prior art:

[0020] This invention provides an anti-sway device for offshore pipe lowering in ocean thermal energy conversion. It uses three anti-sway zones to gradually reduce the sway range of the cold water pipe, ultimately achieving anti-sway. Compared with anti-sway ropes, the safety of construction personnel is guaranteed. By changing the connection position of the pin on the clamp connecting plate, the anti-sway and lowering of the cold water pipe can be quickly switched. The construction is simple and efficient, and can greatly improve construction efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the marine thermal energy generation offshore pipe anti-sway device provided by the present invention.

[0023] Figure 2This is a top view of the structure of the anti-sway frame in this invention;

[0024] Figure 3 This is a schematic diagram of the clamping assembly in this invention;

[0025] Figure 4 This is a schematic diagram of the structure in this invention where the small clamp and the large clamp form an annular anti-sway zone;

[0026] In the diagram: 1-Sway-stopping frame, 2-Bearing base, 3-First sway-stopping mechanism, 31-Inclined support frame base, 32-Inclined support frame, 33-First inclined support frame tie rod, 34-Second inclined support frame tie rod, 35-Inclined support frame support rib, 36-Inclined support frame tie rod connecting plate, 37-Inclined support frame connecting rib plate, 38-Rib plate connecting pin, 39-Rib plate connecting plate, 4-Second sway-stopping mechanism, 41-Straight support frame base, 42-Straight support frame, 43-Buffer roller 44-Straight support frame diagonal tie rod, 45-Straight support frame diagonal tie rod base, 46-Straight support frame connecting stiffener plate, 5-Third anti-sway mechanism, 51-Large clamp, 52-Small clamp, 53-Clamping clamp connecting plate, 54-First pin hole, 55-Second pin hole, 56-Large clamp connecting pin shaft, 57-Small clamp slide rail, 58-Wear-resistant strip, 59-Small clamp handle, 60-Limiting eye bolt, 61-Connecting plate, 62-Clamping clamp connecting plate pin shaft, 63-Elongated hole. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The purpose of this invention is to provide a marine thermal energy conversion (TEC) power generation offshore pipe anti-sway device to solve the problems existing in the prior art. By limiting the movement of the cold water pipe during hoisting and docking through mechanical structure, the device can ensure the safety of offshore construction and improve construction efficiency.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-4 As shown, this embodiment provides a marine thermal energy conversion offshore pipe anti-sway device, including an anti-sway frame 1 and a load-bearing base 2. The load-bearing base 2 is used to install on the deck. The anti-sway frame 1 includes a first anti-sway mechanism 3, a second anti-sway mechanism 4 and a third anti-sway mechanism 5 connected in sequence.

[0031] The first anti-sway mechanism 3 includes a slanted support frame base 31 and two slanted support frames 32 respectively fixedly connected to both ends of the slanted support frame base 31. The slanted support frame base 31 is used to be fixedly installed on the deck. The two slanted support frames 32 are arranged in a V-shape. The inner sides of the two slanted support frames 32 are connected by a first slanted support frame tie rod 33 and a second slanted support frame tie rod 34 that are spaced apart. The first slanted support frame tie rod 33, the second slanted support frame tie rod 34 and the two slanted support frames 32 form a first anti-sway zone.

[0032] The second anti-sway mechanism 4 includes a straight support frame base 41 and straight support frames 42 that are fixedly connected to both ends of the straight support frame base 41. The straight support frame base 41 is used to be fixedly installed on the deck. The two straight support frames 42 are parallel to each other. One end of the two straight support frames 42 is fixedly connected to the straight support frame base 41, and the other end is fixedly connected to the load-bearing base 2. The inner sides of the two straight support frames 42 are connected by three buffer rollers 43 that are spaced apart. The three buffer rollers 43 and the two straight support frames 42 form a second anti-sway zone.

[0033] The third anti-sway mechanism 5 includes a clamping assembly, which comprises two large clamps 51 vertically distributed and fixedly connected, and two small clamps 52 connected between the two large clamps 51. One end of each of the two large clamps 51 is fixedly provided with a clamping connecting plate 53. The clamping connecting plate 53 is rotatably connected to one end of the straight support frame 42 via a clamping connecting plate pin 62. The clamping connecting plate 53 has a first pin hole 54 and a second pin hole 55. The clamping connecting plate pin 62 passes through the first pin hole 54 or the second pin hole 55 to connect to the straight support frame 42 for opening or tightening the large clamps 51. The other end of each of the two large clamps 51 is connected to a large clamping connecting pin 56. The connection is achieved by inserting the large clamp connecting pin 56 to connect two large clamps 51, which are then connected to the clamp connecting plate pin 62 to achieve the clamping of the two large clamps 51. Removing the large clamp connecting pin 56 allows the two large clamps 51 to open. The inner side of the two large clamps 51 is provided with a small clamp slide rail 57, and the two small clamps 52 are slidably connected to the small clamp slide rail 57. The two small clamps 52 can slide along the small clamp slide rail 57 to form a ring structure with the two large clamps 51 as a third anti-sway zone. The inner diameter of the ring structure is equal to the outer diameter of the cold water pipe. The connecting plate 61 connecting the two large clamps 51 is provided with a locking device for locking the two small clamps 52.

[0034] One end of the two inclined support frames 32 is connected to one end of the two straight support frames 42 respectively, and the other end of the two straight support frames 42 is rotatably connected to one end of the two large clamps 51 through the clamp connecting plate pin 62. The anti-sway range of the first anti-sway zone, the second anti-sway zone and the third anti-sway zone gradually decreases.

[0035] When the cold water pipe is hoisted, it first enters between the two inclined support frames 32 in a figure-eight shape. The cold water pipe crosses the tie rod 33 of the first inclined support frame and enters between the tie rod 33 of the first inclined support frame and the tie rod 34 of the second inclined support frame. The first anti-sway zone formed by the two inclined support frames 32, the tie rod 33 of the first inclined support frame, and the tie rod 34 of the second inclined support frame provides initial anti-sway for the cold water pipe. Then, the cold water pipe enters between the two straight support frames 42 from the two inclined support frames 32. The second anti-sway zone formed by the three buffer rollers 43 and the two straight support frames 42 provides secondary anti-sway for the cold water pipe, further reducing the sway range of the cold water pipe. After that, the cold water pipe moves along the straight support frame 42 toward the clamping assembly and enters the two large clamps 51. By sliding the two small clamps 52, the cold water pipe is restricted in the ring structure formed by the two small clamps 52 and the two large clamps 51. Since the inner diameter of the ring structure is equal to the outer diameter of the cold water pipe, the anti-sway of the cold water pipe is finally achieved through the third anti-sway zone. By using three anti-sway zones to gradually reduce the swaying range of the cold water pipe, the swaying of the cold water pipe is reduced, ultimately achieving sway control. Compared to anti-sway ropes, this method ensures the safety of construction workers. By changing the connection position of the clamp connecting plate pin 62 on the clamp connecting plate 53, the large clamp 51 can be opened or tightened, enabling quick switching between sway control and lowering of the cold water pipe. The construction is simple and efficient, significantly improving construction efficiency. When the cold water pipe moves towards the clamp assembly within the straight support frame 42, it sequentially contacts the three buffer rollers 43, reducing the impact on the cold water pipe and minimizing its swaying range. A rolling contact is formed between the cold water pipe and the buffer rollers 43, preventing scratches on the cold water pipe.

[0036] In this embodiment, the bottom end of the inclined support frame 32 away from the straight support frame 42 is welded to the inclined support frame base 31, and the bottom end of the inclined support frame 32 near the straight support frame 42 is welded and fixed to the straight support frame base 41. An inclined support frame support rib 35 is also welded to the welded connection between the inclined support frame 32 and the inclined support frame base 31 and the straight support frame base 41. The inclined support frame 32 and the inclined support frame base 31 are connected by the inclined support frame support rib 35, thereby improving the connection strength.

[0037] In this embodiment, each inclined support frame 32 has an inclined support frame tie rod connecting plate 36 welded to its inner side. The first inclined support frame tie rod 33 and the second inclined support frame tie rod 34 are respectively connected to the inclined support frame tie rod connecting plate 36 through tie rod pins.

[0038] In this embodiment, each straight support frame 42 is fixedly connected to a straight support frame diagonal brace 44 on its outer side. The lower end of the straight support frame diagonal brace 44 is fixedly provided with a straight support frame diagonal brace base 45. The straight support frame diagonal brace base 45 is fixedly installed on the load-bearing base 2 by bolts. The straight support frame 42 is supported by the straight support frame diagonal brace 44, making the structure more stable.

[0039] In this embodiment, a connecting stiffener plate 37 is welded to one end of the inclined support frame 32 near the straight support frame 42, and a connecting stiffener plate 46 is welded to one end of the straight support frame 42 near the inclined support frame 32. Both the connecting stiffener plate 37 and the connecting stiffener plate 46 are provided with stiffener plate connecting holes, and a stiffener plate connecting pin 38 passes through each stiffener plate connecting hole. The two stiffener plate connecting pins 38 are connected by a stiffener plate connecting plate 39.

[0040] In this embodiment, the inner side of the small clamp 52 is provided with a wear-resistant strip 58, which has high wear resistance and improves service life.

[0041] In this embodiment, a small clip handle 59 is provided on the outside of the small clip 52, which can be conveniently pushed to slide along the small clip slide rail 57 by means of the small clip handle 59.

[0042] In this embodiment, the inclined support frame base 31 and the straight support frame base 41 are connected to the deck by bolts, which facilitates disassembly and assembly.

[0043] In this embodiment, the locking device includes a limiting eye screw 60. The small clamps 52 are provided with an elongated hole 63 that cooperates with the limiting eye screw 60. After the two small clamps 52 and the two large clamps 51 form a ring structure, the two small clamps 52 are locked by turning the limiting eye screw 60 into the elongated hole 63. The structure is simple and easy to adjust.

[0044] The device of this invention has a simple structure. It can complete the oscillation prevention of marine thermal energy cooling pipe laying as long as there is a crane and a moon pool opening. It has no special requirements for the ship used and has wide applicability. The structure is mainly connected by bolts and pins, and installation and dismantling are relatively convenient.

[0045] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A device for preventing swaying during marine thermal energy generation, characterized in that: It includes a sway control frame and a load-bearing base, the load-bearing base being used for installation on a deck, and the sway control frame including a first sway control mechanism, a second sway control mechanism and a third sway control mechanism connected in sequence. The first anti-sway mechanism includes a base of inclined support frame and two inclined support frames respectively fixedly connected to both ends of the base of inclined support frame. The base of inclined support frame is used to be fixedly installed on the deck. The two inclined support frames are arranged in a figure-eight shape. The inner sides of the two inclined support frames are connected by a first inclined support frame tie rod and a second inclined support frame tie rod respectively, which are arranged at intervals. The first inclined support frame tie rod, the second inclined support frame tie rod and the two inclined support frames form a first anti-sway zone. The second anti-sway mechanism includes a straight support frame base and straight support frames respectively fixedly connected to both ends of the straight support frame base. The straight support frame base is used to fix it on the deck. The two straight support frames are parallel to each other. One end of the two straight support frames is fixedly connected to the straight support frame base, and the other end is fixedly connected to the load-bearing base. The inner sides of the two straight support frames are respectively connected by three buffer rollers arranged at intervals. The three buffer rollers and the two straight support frames form a second anti-sway zone. The third anti-sway mechanism includes a clamping assembly, which comprises two large clamps vertically distributed and fixedly connected, and two small clamps connected between the two large clamps. One end of each of the two large clamps is fixedly provided with a clamping connecting plate. The clamping connecting plate is rotatably connected to one end of the straight support frame via a clamping connecting plate pin. The clamping connecting plate has a first pin hole and a second pin hole. The clamping connecting plate pin passes through the first pin hole or the second pin hole to connect to the straight support frame to open or close the large clamps. The other ends of the two large clamps are connected via a large clamping connecting pin. The two large clamps are connected by inserting the connecting pin of the large clamp and coordinating with the connecting pin of the clamp connecting plate to achieve the clamping of the two large clamps. The two large clamps are opened by removing the connecting pin. The inner side of the two large clamps is provided with a small clamp slide rail. The two small clamps are slidably connected to the small clamp slide rail. The two small clamps can slide along the small clamp slide rail to form a ring structure with the two large clamps as a third anti-sway zone. The inner diameter of the ring structure is equal to the outer diameter of the cold water pipe. The connecting plate connecting the two large clamps is provided with a locking device for locking the two small clamps. One end of the constricted opening of each of the two inclined support frames is connected to one end of each of the two straight support frames, and the other end of each of the two straight support frames is rotatably connected to one end of each of the two large clamps through the clamp connecting plate pin. The anti-sway range of the first anti-sway zone, the second anti-sway zone, and the third anti-sway zone gradually decreases.

2. The marine thermal energy conversion offshore pipe anti-sway device according to claim 1, characterized in that: The bottom end of the inclined support frame away from the straight support frame is welded to the base of the inclined support frame, and the bottom end of the inclined support frame close to the straight support frame is welded and fixed to the base of the straight support frame. An inclined support frame support rib is also welded to the welded connection between the inclined support frame and the base of the inclined support frame and the base of the straight support frame.

3. The marine thermal energy conversion offshore pipe anti-sway device according to claim 1, characterized in that: Each of the inclined support frames has an inclined support frame tie rod connecting plate welded to its inner side. The two ends of the first inclined support frame tie rod and the second inclined support frame tie rod are respectively connected to the inclined support frame tie rod connecting plate through tie rod pins.

4. The marine thermal energy generation offshore pipe anti-sway device according to claim 1, characterized in that: Each of the straight support frames is fixedly connected to a straight support frame diagonal tie rod on its outer side. The lower end of the straight support frame diagonal tie rod is fixedly provided with a straight support frame diagonal tie rod base, and the straight support frame diagonal tie rod base is fixedly installed on the load-bearing base.

5. The marine thermal energy conversion offshore pipe anti-sway device according to claim 1, characterized in that: The inclined support frame is welded with a connecting stiffener plate at one end near the straight support frame, and the straight support frame is welded with a connecting stiffener plate at one end near the inclined support frame. Both the inclined support frame connecting stiffener plate and the straight support frame connecting stiffener plate are provided with stiffener plate connecting holes. A stiffener plate connecting pin is inserted into each of the stiffener plate connecting holes, and the two stiffener plate connecting pins are connected by a stiffener plate connecting plate.

6. The marine thermal energy conversion offshore pipe anti-sway device according to claim 1, characterized in that: The inner side of the small clip is equipped with a wear-resistant strip.

7. The marine thermal energy conversion offshore pipe anti-sway device according to claim 1, characterized in that: The small clip has a small clip handle on the outside.

8. The marine thermal energy conversion offshore pipe anti-sway device according to claim 1, characterized in that: The inclined support frame base and the straight support frame base are connected to the deck by bolts.

9. The marine thermal energy conversion offshore pipe anti-sway device according to claim 1, characterized in that: The locking device includes a limiting eye screw. The small clamps are provided with elongated holes that cooperate with the limiting eye screw. After the two small clamps and the two large clamps form a ring structure, the two small clamps are locked by turning the limiting eye screw and inserting it into the elongated hole.

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