Large LNG ship-to-ship mooring device

Abstract

The utility model discloses a large LNG (Liquefied Natural Gas) ship-to-ship mooring device, which comprises a winch and a mooring bollard, and is characterized in that a reverse cable rope is released in the winch, the reverse cable rope is changed in direction through a base fairlead and then is connected with a fairlead hole of another ship in a penetrating manner, and the reverse cable rope is fixedly connected with the mooring bollard after passing through the fairlead hole. The mooring bollard is fixed to the base, the base is connected with the deck through bolts, one side of the upper portion of the base is fixedly connected with the bollard body, the upper portion of the bollard body is fixedly connected with the upper portion of the other side of the base, the bollard body is in threaded connection with the screw, the upper portion of the screw is fixedly connected with the bollard top, and the upper portion of the screw is fixedly connected with the bollard top. A first motor is fixedly connected under the screw rod, a through hole is formed in the outer wall of the screw rod, and a second motor is fixedly connected under the base. The ship-to-ship safe mooring device has the advantages of being high in practicability, capable of meeting ship-to-ship safe mooring of ships of various ship types and sizes and convenient to fix the mooring rope.

Description

Technical Field

[0001] The utility model relates to the technical field of mooring devices, in particular to a large LNG ship-to-ship mooring device. Background Technique

[0002] In today's world, with the development of science and technology and human civilization, people's demand for energy is increasing. As a special ship for transporting liquefied gas energy, the huge transportation volume and low cost of LNG ships can meet people's demand for energy. At present, the LNG refueling of LNG fuel-powered ships is inevitable. Conventional ship types do not specifically consider the ship-to-ship mooring device in the early design stage. Because this ship is an LNG ship, the refueling problem of the LNG ship needs to be considered. The mooring during refueling is the ship-to-ship working condition. On some existing LNG ship types, the ship size of the refueling ship is not fully considered. That is, there is only 1 bollard corresponding to the front and back of the central manifold area. When a small refueling ship is moored, it is disadvantageous for ship-to-ship mooring. At the same time, when fixing the mooring cable for ship-to-ship mooring, the weight of the backstay cable is relatively large, which is time-consuming and laborious.

[0003] Therefore, it is very necessary to design a large LNG ship-to-ship mooring device with strong practicability and meeting the ship-to-ship safe mooring of various ship sizes, and to provide a bollard that can quickly fix the cable on the bollard and save time and effort. Content of the Utility Model

[0004] The purpose of the utility model is to provide a large LNG ship-to-ship mooring device to solve the problems put forward in the above background technique.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A large LNG ship-to-ship mooring device, including a deck. The deck is a steel plate arranged on the overall beam of the ship. A fairlead, a winch and a pedestal fairlead are fixedly connected above the deck. The pedestal fairlead is... The deck is bolted with a pedestal above. A bollard is fixedly connected above the pedestal. The winch stores a backstay cable. During the ship-to-ship mooring process of the large LNG ship, the backstay cable inside the winch of the refueling ship extends out. The backstay cable contacts the surface of the pedestal fairlead. After the direction of the backstay cable is changed by the pedestal fairlead, it is connected through the fairlead of the refueling ship. The backstay cable passes through the fairlead and is connected through the fairlead of the ship to be refueled. The backstay cable passes through the fairlead and is fixedly connected to the bollard on the ship to be refueled;

[0006] A horizontal roller guide wheel is fixedly connected above the deck. During the ship-to-ship mooring process of a large LNG ship, a second back cable inside the winch of the ship being refueled extends out. After the second back cable extends out from the winch, it contacts the horizontal roller surface of the horizontal roller guide wheel. After the direction of the second back cable is changed by the horizontal roller guide wheel, it is connected through the fairlead of the ship being refueled. After the second back cable passes through the fairlead, it is connected through the fairlead of the refueling ship. After the second back cable passes through the fairlead of the refueling ship, it is fixedly connected to the bollard of the refueling ship;

[0007] A pile body is fixedly connected above the base. A connecting pile top is fixed above the pile body, and the pile top functions to prevent the back cable from slipping off. A bollard body is fixedly connected above the base. The bollard body is a cylindrical member with internal threads. The bollard body is threadedly connected with a screw rod. A second pile top is fixedly connected above the screw rod, and the second pile top can prevent the back cable from slipping off. Through holes are provided on the outer wall of the screw rod for the back cable to pass through. A first motor is fixedly connected above the base. The first motor is electrically connected to a first controller through a first wire routing channel. The first controller is used to control the first motor, and the first controller is fixedly connected above the base. A force sensor is fixedly connected to one side of the bollard body for detecting the tension received by the screw rod. A fixing plate is fixedly connected below the deck. The fixing plate is composed of two L-shaped steel plates. The fixing plate is fixedly connected with a second motor. The main shaft of the second motor passes through the deck and is fixedly connected to the base. The second motor is electrically connected to a second controller through a second wire routing channel. The second controller is used to control the second motor, and the second controller is fixedly connected above the deck.

[0008] According to the above technical solution, the force sensor and the first motor are controlled by the first controller, and the second motor is controlled by the second controller;

[0009] According to the above technical solution, when the first motor starts, the main shaft will also extend and contract along with the screw rod;

[0010] According to the above technical solution, the inner wall of the bollard body has threads that fit the threads on the outer wall of the screw rod;

[0011] According to the above technical solution, the second controller controls the second motor to set a fixed program in the second controller before starting. After starting, the second motor drives the base and the bollard to rotate together and will automatically stop after rotating a certain number of turns;

[0012] According to the above technical solution, the fairlead supports cable guiding of the back cable in two directions: 90° left and right and 30° up and down.

[0013] According to the above technical solution, during the ship-to-ship mooring process, the force sensor senses the tension transmitted from the backstay cable. When the sensed tension may damage the bollard or break the backstay cable, the force sensor will send a signal to the first controller, and the first controller will issue an alarm to order the crew to stay away to a safe position.

[0014] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows: The present utility model can meet the ship-to-ship safe mooring of various ship types and sizes, and it is more convenient to fix the cable and the bollard;

[0015] (1) By providing two bollards, with four sets on each side of each ship, it can meet the safe mooring of various sizes of ship types;

[0016] (2) By providing a first motor and a stud, it is not necessary to complete the fixation of the backstay cable and the bollard manually, which is more time-saving and labor-saving;

[0017] (3) By providing a double-headed bollard, the force on the bollard is more uniform, enhancing the stability of the bollard during mooring. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0019] Figure 1 is the overall structural schematic diagram of the bow of the present utility model;

[0020] Figure 2 is the overall structural schematic diagram of the stern of the present utility model;

[0021] Figure 3 is the front view sectional structural schematic diagram of the bollard of the present utility model;

[0022] Figure 4 is the present utility model Figure 2 A-A sectional schematic diagram in;

[0023] Figure 5 is the present utility model Figure 1 sectional schematic diagram;

[0024] In the figure: 1, deck; 2, bollard; 3, fairlead; 4, backstay cable; 5, winch; 6, pedestal fairlead; 7, horizontal roller guide wheel; 8, pedestal; 9, pile body; 10, first pile top; 11, second pile top; 12, screw rod; 13, through hole; 14, force sensor; 15, bollard body; 16, first motor; 17, first controller; 18, first cable routing channel; 19, second controller; 20, second cable routing channel; 21, second motor; 22, fixing bracket. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1 and Figure 5 A large LNG ship-to-ship mooring device provided by an embodiment of the present utility model. The large LNG ship-to-ship mooring device includes a deck 1. The deck 1 is a steel plate arranged on the overall beam of the ship. A winch 5 is fixedly connected above the deck 1. The winch 5 includes a winch one 5-1 and a winch two 5-2. A back cable 4 is stored inside the winch 5. The winch 5 can release and pull back the back cable 4. The back cable 4 includes a back cable one 4-1 and a back cable two 4-2;

[0027] A fairlead 3 is fixedly connected above the deck 1. The fairlead 3 is used to guide the back cable 4 through the hull. The fairlead includes a fairlead one 3-1, a fairlead two 3-2, a fairlead three 3-3, and a fairlead four 3-4;

[0028] A pedestal fairlead 6 is fixedly connected above the deck 1. The pedestal fairlead 6 is used to guide the back cable 4 to pass through or change the direction;

[0029] A pedestal 8 is bolted above the deck 1. A bollard 2 is fixedly connected above the pedestal 8. The bollard 2 includes a bollard one 2-1 and a bollard two 2-2;

[0030] During the ship-to-ship mooring process of a large LNG ship, the back cable one 4-1 inside the winch 5-1 of the fueling ship extends out. The back cable one 4-1 contacts the surface of the pedestal fairlead 6. After the direction of the back cable one 4-1 is changed by the pedestal fairlead 6, it is connected through the fairlead one 3-1 of the fueling ship. After the back cable one 4-1 passes through the fairlead one 3-1, it is connected through the fairlead two 3-2 of the ship to be fueled. After the back cable one 4-1 passes through the fairlead two 3-2, it is fixedly connected to the bollard one 2-1 of the ship to be fueled;

[0031] Such as Figure 2 and Figure 4As shown in the figure, an on - ship mooring device for large LNG ships provided by an embodiment of the present utility model has a horizontal roller guide wheel 7 fixedly connected above the deck 1. The horizontal roller guide wheel 7 is used to guide the back - cable 4 to slide on the roller and change the direction. During the on - ship mooring process of large LNG ships, the back - cable two 4 - 2 inside the winch two 5 - 2 of the ship being refueled extends out. After the back - cable two 4 - 2 extends out from the winch two 5 - 2, it contacts the horizontal roller surface of the horizontal roller guide wheel 7. After the direction of the back - cable two 4 - 2 is changed by the horizontal roller guide wheel 7, it is connected through the fairlead three 3 - 3 of the ship being refueled. After the back - cable two 4 - 2 passes through the fairlead three 3 - 3, it is connected through the fairlead four 3 - 4 on the refueling ship. After the back - cable two 4 - 2 passes through the fairlead three 3 - 3, it is fixedly connected to the bollard two 2 - 2 on the refueling ship;

[0032] As Figure 3 As shown in the figure, a pile body 9 is fixedly connected above the base 8, and a first pile top 10 is fixedly connected above the pile body 9. The first pile top 10 has the function of preventing the back - cable 4 from slipping off. A bollard body 15 is fixedly connected above the base 8. The bollard body 15 is a cylindrical member with internal threads. A screw rod 12 is thread - connected to the bollard body 15. A second pile top 11 is fixedly connected above the screw rod 12. The second pile top 11 can prevent the back - cable 4 from slipping off. A through - hole 13 is provided on the outer wall of the screw rod 12 for the back - cable 4 to pass through. A first motor 16 is fixedly connected above the base 8. The main shaft of the first motor 16 is fixedly connected to the screw rod 12. The first motor 16 is electrically connected to a first controller 17 through a first cable channel 18. The first controller 17 is used to control the first motor 16. The first controller 17 is fixedly connected above the base 8. A force - sensitive sensor 14 is fixedly connected to one side of the bollard body 15. The force - sensitive sensor 14 is used to detect the tension received by the screw rod 12. A fixing plate 22 is fixedly connected below the deck 1. The fixing plate 22 is composed of two L - shaped steel plates. The fixing plate 22 is fixedly connected with a second motor 21. The main shaft of the second motor 21 passes through the deck 1 and is fixedly connected to the base 8. The second motor 21 is electrically connected to a second controller 19 through a second cable channel 20. The second controller 19 is used to control the second motor 21. The second controller 19 is fixedly connected above the deck 1:

[0033] The force - sensitive sensor 14 and the first motor 16 are controlled by the first controller 17, and the second motor 21 is controlled by the second controller 19;

[0034] When the first motor 16 starts, the main shaft will also extend and contract along with the screw rod 12;

[0035] The inner wall of the bollard body 15 has threads and fits with the outer wall of the screw rod 12;

[0036] The fairlead 3 supports the back - cable 4 to guide the cable in two directions: 90° left - right and 30° up - down;

[0037] The back guy cable 4 is a hybrid cable formed by connecting a wire rope and a nylon cable;

[0038] Under normal conditions, the bolts between the pedestal 8 and the deck 1 are loose. When the bollard 2 is connected to the back guy cable 4, the bolts are tightened;

[0039] The second controller 19 controls the second motor 21 to set a fixed program in the second controller 19 before starting. After starting, the second motor 21 drives the pedestal 8 and the bollard 2 to rotate together and will automatically stop after rotating a certain number of turns;

[0040] The force sensor 14 senses the tension transmitted by the back guy cable 4 during ship-to-ship mooring. When the sensed tension may damage the bollard 2 or break the back guy cable 4, the force sensor 14 will feedback a signal to the first controller 17, and the first controller 17 will issue an alarm to order the crew to stay away to a safe position.

[0041] Working principle: When a large LNG ship is moored ship-to-ship, after pulling out the back guy cable 4-1 from the winch 5-1 on the fueling ship, the back guy cable 4-1 is bypassed around the pedestal fairlead 6. After the back guy cable 4-1 passes through the fairlead hole 3-1, the back guy cable 4-1 passes through the fairlead hole 3-2 of the ship to be fueled, and then the back guy cable 4-1 is fixedly connected to the bollard 2-1;

[0042] The winch 5-2 on the ship to be fueled pulls out the back guy cable 4-2. After the back guy cable 4-2 passes through the fairlead hole 3-3, the back guy cable 4-1 passes through the fairlead hole 3-4 on the fueling ship, and then the back guy cable 4-2 is fixedly connected to the bollard 2-2;

[0043] When the bollard 2 is connected to the back guy cable 4, one end of the back guy cable 4 is passed through the through hole 13, and the first motor 16 is started through the first controller 17. After the first motor 16 is started, the screw 12 descends to press the back guy cable 4. When the pressure on the back guy cable 4 reaches a certain amount, the force sensor 14 feedbacks a signal to the first controller 17, and the first controller 17 controls the first motor 16 to stop and controls the second controller 19 to start the second motor 21. After the second motor 21 rotates a preset number of turns, it automatically stops, and the bolts between the pedestal 8 and the deck 1 are tightened;

[0044] When the ship-to-ship mooring and fueling are completed, the bolts fixing the pedestal 8 and the deck 1 are loosened, and the second controller 19 is controlled to start the second motor 21 to relax the back guy cable 4. When the number of turns of the back guy cable 4 on the bollard 2 is zero, it automatically stops, and the first controller 17 is controlled to start the first motor 16. The screw 12 slowly rises. When the bottom end of the through hole 13 and the top end of the bollard body 15 are horizontal, the first motor 16 automatically stops, and then the back guy cable 4 is taken out from the through hole 13, and the back guy cable 4 is retracted back along the original route with the winch 5.

[0045] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A large LNG ship-to-ship mooring device, including a deck (1), where the deck (1) is a steel plate set on the overall beam of the ship. Above the deck (1), a winch (5) is fixedly connected. The winch (5) includes a winch one (5-1) and a winch two (5-2). Inside the winch (5), a backstay cable (4) is stored. The winch (5) can release and retract the backstay cable (4). The backstay cable (4) includes a backstay cable one (4-1) and a backstay cable two (4-2). Above the deck (1), a fairlead (3) is fixedly connected. The fairlead (3) is used to guide the backstay cable (4) through the hull. The fairlead (3) includes a fairlead one (3-1), a fairlead two (3-2), a fairlead three (3-3), and a fairlead four (3-4). Above the deck (1), a pedestal fairlead (6) is fixedly connected. The pedestal fairlead (6) is used to guide the backstay cable (4) to pass through or change direction. Above the deck (1), a pedestal (8) is bolted. Above the pedestal (8), a bollard (2) is fixedly connected. The bollard (2) includes a bollard one (2-1) and a bollard two (2-2). During the ship-to-ship mooring process of a large LNG ship, the backstay cable one (4-1) inside the winch one (5-1) of the fueling ship extends. The backstay cable one (4-1) contacts the surface of the pedestal fairlead (6). After the direction of the backstay cable one (4-1) is changed by the pedestal fairlead (6), it is connected through the fairlead one (3-1) of the fueling ship. The backstay cable one (4-1) passes through the fairlead one (3-1) and is connected through the fairlead two (3-2) of the ship being fueled. After the backstay cable one (4-1) passes through the fairlead two (3-2), it is fixedly connected to the bollard one (2-1) of the ship being fueled. Above the deck (1), a horizontal roller guide wheel (7) is fixedly connected. The horizontal roller guide wheel (7) is used to guide the backstay cable (4) to slide on the roller and change direction. During the ship-to-ship mooring process of a large LNG ship, the backstay cable two (4-2) inside the winch two (5-2) of the ship being fueled extends. After the backstay cable two (4-2) extends from the winch two (5-2), it contacts the surface of the horizontal rollers of the horizontal roller guide wheel (7). After the direction of the backstay cable two (4-2) is changed by the horizontal roller guide wheel (7), it is connected through the fairlead three (3-3) of the ship being fueled. The backstay cable two (4-2) passes through the fairlead three (3-3) and is connected through the fairlead four (3-4) of the fueling ship. After the backstay cable two (4-2) passes through the fairlead three (3-3), it is fixedly connected to the bollard two (2-2) of the fueling ship. Above the base (8) is fixedly connected a pile body (9), above the pile body (9) is fixedly connected a first pile top (10), the first pile top (10) serves to prevent the slipping of the backstay cable (4), above the base (8) is fixedly connected a bitt body (15), the bitt body (15) is a cylindrical member with internal threads, the bitt body (15) is threadedly connected with a screw rod (12), above the screw rod (12) is fixedly connected a second pile top (11), the second pile top (11) can prevent the backstay cable (4) from slipping, on the outer wall of the screw rod (12) is provided a through hole (13), the through hole (13) is for the backstay cable (4) to pass through, above the base (8) is fixedly connected a first motor (16), the main shaft of the first motor (16) is fixedly connected with the screw rod (12), the first motor (16) is electrically connected with a first controller (17) through a first cable channel (18), the first controller (17) is used to control the first motor (16), the first controller (17) is fixedly connected above the base (8), on one side of the bitt body (15) is fixedly connected a force sensor (14), the force sensor (14) is used to detect the tensile force received by the screw rod (12), below the deck (1) is fixedly connected a fixing plate (22), the fixing plate (22) is two L-shaped steel plates, the fixing plate (22) is fixedly connected with a second motor (21), the main shaft of the second motor (21) passes through the deck (1) and is fixedly connected with the base (8), the second motor (21) is electrically connected with a second controller (19) through a second cable channel (20), the second controller (19) is used to control the second motor (21), the second controller (19) is fixedly connected above the deck (1).

2. The ship-to-ship mooring device for large LNG ships according to claim 1, wherein: The force sensor (14) and the first motor (16) are controlled by the first controller (17), and the second motor (21) is controlled by the second controller (19).

3. A large LNG ship-to-ship mooring device according to claim 1, characterized in that: When the first motor (16) starts, the main shaft will also elongate and contract following the screw rod (12).

4. A large LNG ship-to-ship mooring device according to claim 1, characterized in that: The inner wall of the bitt body (15) has threads and fits with the outer wall of the screw rod (12).

5. A ship-to-ship mooring device for large LNG ships according to claim 1, characterized in that: The backstay cable (4) is a hybrid cable formed by connecting a steel wire rope and a nylon cable.

6. The ship-to-ship mooring device for large LNG ships according to claim 1, characterized in that: The fairlead (3) supports the backstay cable (4) to conduct cable guiding in two directions of 90° left and right and 30° up and down.

7. A large LNG ship-to-ship mooring device according to any one of claims 1-6, characterized in that, During the ship-to-ship mooring process, the force sensor (14) senses the tensile force transmitted by the backstay cable (4). When the sensed tensile force may damage the bitt (2) or break the backstay cable (4), the force sensor (14) will feedback a signal to the first controller (17), and the first controller (17) issues an alarm to order the crew to stay away to a safe position.

8. The ship-to-ship mooring device for large LNG ships according to claim 7, wherein: The second controller (19) controls the second motor (21) to set a fixed program in the second controller (19) before starting. After starting, the second motor (21) drives the base (8) and the bitt (2) to rotate together, and will automatically stop after rotating a certain number of turns.

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