LNG (Liquefied Natural Gas) ship-to-ship filling hose bracket device and using method thereof

Abstract

The invention discloses an LNG (liquefied natural gas) ship-to-ship filling hose bracket device and a using method thereof. The LNG ship-to-ship filling hose bracket device comprises a filling prying assembly mounted on a main deck, two lifting seats are arranged on the filling prying assembly and rotationally mounted on the filling prying assembly, and a traction rotating mechanism for driving the lifting seats to rotate is arranged on the filling prying assembly; the lifting seat comprises a lifting main body and a rotary drum sleeve, and an open type filling hose channel is formed in the top of the lifting seat; the transverse section of the lifting body is in a U shape, and a water bag limiting and fastening mechanism for installing a filling hose is arranged in the lifting base. In the ship-to-ship LNG filling process, the lifting base lifts the liquid-phase LNG filling hose and the gas-phase LNG filling hose, and meanwhile the liquid-phase LNG filling hose and the gas-phase LNG filling hose are isolated from the main deck and the broadside outer plate, so that a ship body structure which is not resistant to low temperature is protected against low-temperature damage of the liquid-phase LNG. And meanwhile, the lifting seat enables the filling hose to be stressed more uniformly, so that an LNG leakage accident is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of LNG ship-to-ship filling, and in particular to an LNG ship-to-ship filling hose bracket device and a use method thereof. Background Art

[0002] In recent years, driven by the global shipping decarbonization trend and increasingly stringent environmental regulations, more and more ships have begun to transform to use green and clean fuels. Among the alternative fuel options for ships, liquefied natural gas (LNG) has become the most advantageous solution for the initial commercial feasibility of carbon emission reduction in the shipping industry due to its comprehensive competitiveness in terms of safety, cost, technical maturity, availability, and completeness of regulations. It has been favored by many ship owners. At present, there are three main ways to achieve LNG refueling for LNG fuel-powered ships: tank truck to ship refueling, shore station to ship refueling, and ship to ship refueling. Compared with other LNG refueling methods, ship-to-ship refueling can achieve simultaneous cargo loading and unloading / passenger boarding and disembarking and refueling operations after a full risk assessment, and the refueling volume is larger and more efficient than the tank truck to ship refueling method. In addition, this refueling method is flexible in operation and can be refueled when the receiving ship is berthed, anchored or in other situations, which is especially suitable for ships with short port turnover time. Therefore, LNG ship-to-ship bunkering is the best choice to meet the fuel demand of large LNG-powered ships. Major ports also attach great importance to the layout of ship-to-ship LNG bunkering business, and the LNG ship-to-ship bunkering industry will also usher in a period of vigorous development.

[0003] However, in the process of LNG ship-to-ship bunkering, there are some urgent problems to be solved:

[0004] 1. When refueling LNG fuel between ships, LNG refueling hoses are usually used. During the refueling process, extremely low-temperature liquid LNG flows in the hose. If the hose contacts the ship's hull, which is not resistant to low temperatures, it will cause low-temperature embrittlement of the steel plate structure, resulting in reduced steel plate strength, posing a threat to the ship's structural strength.

[0005] 2. The existing LNG bunkering hose rack design has deficiencies. The lack of support for the LNG hose causes the hose to sag naturally during bunkering, resulting in high distortion and stress concentration at the joints, which is easily damaged and causes LNG leakage accidents. Therefore, there is an urgent need for an LNG ship-to-ship bunkering hose bracket device that can protect the hull and improve bunkering safety. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides an LNG ship-to-ship filling hose bracket device and a method of using the same.

[0007] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0008] Provided is an LNG ship-to-ship filling hose bracket device, comprising a filling skid assembly installed on the main deck, the filling skid assembly is respectively provided with two lifting seats cooperating with the liquid-phase LNG filling hose and the gas-phase LNG filling hose, the two lifting seats are rotatably installed on the filling skid assembly, and the filling skid assembly is provided with a traction and rotation mechanism for driving the lifting seats to rotate; the lifting seat comprises a lifting body and a rotating drum sleeve, the lifting body is L-shaped, and the top of the lifting seat forms an open filling hose channel; the transverse section of the lifting body is U-shaped, and a water bag limiting and fastening mechanism for installing the filling hose is provided in the lifting seat.

[0009] Furthermore, the traction and rotation mechanism includes a telescopic traction device and two traction springs. The fixed end of the telescopic traction device is fixedly connected to the filling skid assembly. The protruding end of the telescopic traction device is provided with a traction hole. One end of the two traction springs is fixedly connected to the traction hole, and the other end is fixedly connected to two lifting seats respectively; a traction ear plate cooperating with the traction spring is provided on the lifting seat, and the traction ear plate is fixedly connected to the traction spring.

[0010] Furthermore, the telescopic traction device is a hydraulic telescopic cylinder, an electric push rod, a gas rod or a threaded lift.

[0011] Furthermore, the locking mechanism includes a locking plate and a lifting device. The locking plate is provided with locking square holes that cooperate with two lifting seats. The locking plate is connected to the filling skid assembly through the lifting device. The lifting device is a hydraulic telescopic cylinder or a threaded lift.

[0012] Furthermore, a rotating mounting seat for mounting the drum sleeve is provided on the filling skid assembly, and the rotating mounting seat includes a rotating shaft and a mounting seat, the rotating shaft is fixedly connected to the mounting seat, and the bottom of the mounting seat is fixedly connected to the filling skid assembly.

[0013] Furthermore, the rotating drum sleeve comprises an upper square sleeve and a lower cylindrical sleeve, and the side length of the upper square sleeve is equal to the diameter of the lower cylindrical sleeve.

[0014] Furthermore, a working limiter and a storage limiter are respectively provided on both sides of the rotation of each lifting seat, and the working limiter and the storage limiter are limiter rods or limiter plates, and the rotation angle of each lifting seat is 90 degrees.

[0015] Furthermore, when the lifting seat contacts the working limiter, the inlet sides of the filling hose channels of the two lifting seats are aligned with the filling hose; when the lifting seat contacts the storage limiter, the inlet sides of the L-shaped pipeline channels of the two lifting seats are aligned towards each other.

[0016] Furthermore, the water bag limiting and fastening mechanism includes a water bag, a water filling pump and a water tank. A water filling port is provided on the water bag. The water outlet end of the water filling pump is connected to the water filling port through a pipe, and the water inlet end is connected to the water tank through a pipe. The transverse cross-section of the water bag is U-shaped, and the outer side of the water bag is glued and fixed to the inner wall of the supporting seat.

[0017] A method for using an LNG ship-to-ship filling hose bracket device comprises the following steps:

[0018] S1. Install two support seats on the filling skid assembly;

[0019] The rotating mounting seat is fixed on the filling skid assembly through the mounting seat, and then the lifting seat is fixed on the rotating shaft of the rotating mounting seat through the rotating sleeve to complete the installation of the two lifting seats;

[0020] S2, connect the two lifting seats with the telescopic traction device;

[0021] The lifting seat is connected to the output end of the telescopic traction device through a traction spring to complete the connection between the two lifting seats and the telescopic traction device; specifically, one end of the traction spring is connected to the traction ear plate of the lifting seat, and the other end of the traction spring is fixedly connected to the traction hole at the output end of the telescopic traction device;

[0022] S3. Before use, the two lifting seats are pulled and rotated to the working position through the pulling and rotating mechanism;

[0023] First, the lifting device is controlled to be telescopic to the lowest position, so that the locking square hole of the locking plate enters the outside of the lower cylindrical sleeve, and then the telescopic traction device is controlled to be telescopic to the farthest stroke, and the extended end of the telescopic traction device drives the two traction springs to move, and the two traction springs respectively drive the two lifting seats to rotate to the working position, so that the lifting seats contact the working limit parts. When the lifting seats contact the working limit parts, the lifting device is controlled to be telescopic to the highest position, so that the locking square hole of the locking plate enters the outside of the upper square sleeve, and the two lifting seats are locked;

[0024] S4. Install the liquid-phase LNG filling hose and the gas-phase LNG filling hose on the filling skid assembly and the lifting seat;

[0025] First install the liquid-phase LNG filling hose and the gas-phase LNG filling hose on the filling skid assembly, and then place the liquid-phase LNG filling hose and the gas-phase LNG filling hose on the lifting seat respectively;

[0026] S5. Fix the liquid-phase LNG filling hose and the gas-phase LNG filling hose by using a water bag limiting fastening mechanism;

[0027] The water injection pump is controlled to work, and the water injection pump draws water from the water tank into the water bag, so that the water bag is filled with water, and the filling hose is squeezed and fixed by the water bag filled with water;

[0028] S6. Filling the ship with LNG through a liquid-phase LNG filling hose and a gas-phase LNG filling hose;

[0029] During the ship-to-ship LNG bunkering process, the lifting seat isolates the liquid-phase LNG bunkering hose and the gas-phase LNG bunkering hose from the main deck and the side outer plate; specifically, when the liquid-phase LNG bunkering hose is transporting liquid-phase LNG, the external temperature of the liquid-phase LNG bunkering hose is much lower than the freezing point of water, so that the water bag wrapped around the liquid-phase LNG bunkering hose freezes quickly, and the water bag expands in volume after freezing, thereby further squeezing and fixing the liquid-phase LNG bunkering hose in the lifting seat, thereby further improving the fixing effect of the liquid-phase LNG bunkering hose;

[0030] S7. After the ship-to-ship LNG bunkering is completed, the lifting seat is rotated to the storage position for storage;

[0031] After the liquid LNG filling is completed, wait for the water in the water bag to melt, first use the water filling pump to extract part of the water in the water bag, and then remove the liquid LNG filling hose and the gaseous LNG filling hose from the lifting seat, first control the lifting device to extend and retract to the lowest position, so that the locking square hole of the locking plate enters the outside of the lower cylindrical sleeve, and then control the telescopic traction device to extend and retract to the shortest stroke, and the extended end of the telescopic traction device drives the two traction springs to move, and the two traction springs respectively drive the two lifting seats to rotate to the storage position, so that the lifting seat contacts the storage limit piece. When the lifting seat contacts the storage limit piece, control the lifting device to extend and retract to the highest position, so that the locking square hole of the locking plate enters the outside of the upper square sleeve, lock the two lifting seats, and complete the storage of the lifting seat.

[0032] The beneficial effects of the present invention are:

[0033] The lifting seat of the present invention is rotatably arranged on the filling skid assembly through a rotating mounting seat. The position of the lifting seat can be rotated and changed by pulling the rotating mechanism, and the working limiter and the storage limiter are cooperated to realize the switching of the working position and the storage position of the lifting seat.

[0034] The locking mechanism of the present invention comprises a locking plate, a locking square hole and a lifting device. The locking plate can lock the rotating sleeve of the lifting seat, thereby fixing the position of the lifting seat, ensuring the stability of the lifting seat when working, and effectively fixing the lifting seat after being stored. The locking mechanism facilitates the locking of the lifting seat, improves the work efficiency of the staff, and ensures the stability and safety of the lifting seat during the filling process of the liquid phase LNG filling hose and the gas phase LNG filling hose.

[0035] During the ship-to-ship LNG filling process, the lifting seat of the present invention lifts the liquid-phase LNG filling hose and the gas-phase LNG filling hose, and isolates the LNG filling hose and the gas-phase LNG filling hose from the main deck and the side outer plate, thereby protecting the low-temperature-sensitive hull from being damaged by the low temperature of the liquid-phase LNG.

[0036] The present invention provides a water bag in the lifting seat, and the water bag is wrapped around the filling hose. When the water bag is filled with water, the expanded water bag can be used to wrap and fix the filling hose, so that the liquid-phase LNG filling hose and the gas-phase LNG filling hose during the filling process are more stable. At the same time, when the liquid-phase LNG filling hose is transporting liquid-phase LNG, the external temperature of the liquid-phase LNG filling hose is much lower than the freezing point of water, so that the water bag wrapped around the liquid-phase LNG filling hose freezes quickly, and the water bag expands in volume after freezing, thereby further squeezing and fixing the liquid-phase LNG filling hose in the lifting seat, thereby further improving the fixing effect of the liquid-phase LNG filling hose.

[0037] The support seat of the present invention can support the liquid-phase LNG filling hose and the gas-phase LNG filling hose, avoiding the problem of low-temperature embrittlement of the steel plate caused by the extremely low-temperature hose contacting the low-temperature-sensitive hull, thereby causing the strength of the steel plate to deteriorate, and further reducing the adverse effect of the hose on the strength of the low-temperature-sensitive hull. At the same time, the two sides of the U-shaped support seat can prevent the hose from sliding left and right, thereby further limiting the filling hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0039] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0040] Figure 3 It is a structural schematic diagram of the lifting seat and the locking mechanism;

[0041] Figure 4 It is a structural schematic diagram of the lifting seat;

[0042] Figure 5 is a structural schematic diagram of a locking mechanism;

[0043] Figure 6 It is a schematic diagram of the lifting seat of the present invention after being stored;

[0044] The main components in the figure are described as follows:

[0045] 1. Main deck; 2. Side outer plate; 3. Filling skid assembly; 31. Support platform; 32. I-beam; 33. Filling hose mounting seat; 34. Towing device mounting seat; 4. Liquid-phase LNG filling hose; 5. Gas-phase LNG filling hose;

[0046] 6. Lifting seat; 61. Lifting body; 62. Rotating sleeve; 621. Upper square sleeve; 622. Lower cylindrical sleeve; 63. Working limiter; 64. Storage limiter; 65. Water bag limiter fastening mechanism; 651. Water bag; 652. Water injection port; 653. Water injection pump; 66. Traction lug;

[0047] 7. Rotating mounting seat; 71. Rotating shaft; 72. Mounting seat;

[0048] 8. Traction rotating mechanism; 81. Telescopic traction device; 82. Traction spring; 83. Traction hole;

[0049] 9. Locking mechanism; 91. Locking plate; 92. Locking square hole; 93. Lifting device. DETAILED DESCRIPTION

[0050] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0051] like Figure 1 and 2 As shown, the LNG ship-to-ship filling hose bracket device is used in conjunction with a liquid-phase LNG filling hose 4 and a gas-phase LNG filling hose 5. The LNG ship-to-ship filling hose bracket device includes a filling skid assembly 3 installed on the main deck 1, and the filling skid assembly 3 is respectively provided with two lifting seats 6 that cooperate with the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5. The two lifting seats 6 are rotatably installed on the filling skid assembly 3, and the filling skid assembly 3 is provided with a traction and rotation mechanism 8 that drives the lifting seats 6 to rotate.

[0052] like Figure 3 As shown, a working limiter 63 and a storage limiter 64 are respectively provided on both sides of the rotation of each lifting seat 6. The working limiter 63 and the storage limiter 64 can be preferably a limiter rod or a limiter plate, and the rotation angle of each lifting seat 6 is 90 degrees. When the lifting seat 6 contacts the working limiter 63, the inlet sides of the filling hose channels of the two lifting seats 6 are aligned with the filling hose. When the lifting seat 6 contacts the storage limiter 64, the inlet sides of the L-shaped pipeline channels of the two lifting seats 6 are aligned toward each other. A travel switch can also be provided on the working limiter 63 and the storage limiter 64, and the working state of the telescopic traction device 81 and the lifting device 93 can be controlled by the travel switch.

[0053] like Figure 4As shown, the rotating sleeve 62 includes an upper square sleeve 621 and a lower cylindrical sleeve 622, and the side length of the upper square sleeve 621 is equal to the diameter of the lower cylindrical sleeve 622. The lifting seat 6 includes a lifting body 61 and a rotating sleeve 62, and the lifting body 61 is L-shaped, and the top of the lifting seat 6 forms an open filling hose channel. The transverse cross-section of the lifting body 61 is U-shaped, and a water bag limiting fastening mechanism 65 for installing the filling hose is provided in the lifting seat 6. The U-shaped lifting seat 6 can lift the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5 while limiting the two sides of the filling hose. Specifically, the lifting seat 6 is sleeved on the rotating shaft 71 of the rotating mounting seat 7 through the rotating sleeve 62, and the axis of the rotating shaft 71 and the rotating sleeve 62 can be further limited by setting screws or annular grooves to prevent the lifting seat 6 from swinging up and down under the action of the hull.

[0054] The filling skid assembly 3 is provided with a rotating mounting seat 7 for mounting the rotating drum sleeve 62, and the rotating mounting seat 7 includes a rotating shaft 71 and a mounting seat 72, the rotating shaft 71 is fixedly connected to the mounting seat 72, and the bottom of the mounting seat 72 is fixedly connected to the filling skid assembly 3. The mounting seat 72 is fixed to the filling skid assembly 3 by welding, and a reinforcing rib plate can also be welded to further strengthen the connection strength between the mounting seat 72 and the filling skid assembly 3.

[0055] The water bag position limiting and fastening mechanism 65 includes a water bag 651, a water injection pump 653 and a water tank. The water bag 651 is provided with a water injection port 652. The water outlet of the water injection pump 653 is connected to the water injection port 652 through a pipeline, and the water inlet is connected to the water tank through a pipeline. The transverse cross section of the water bag 651 is U-shaped, and the outer side of the water bag 651 is glued and fixed to the inner wall of the lifting seat 6. A flow valve can also be provided at the output end of the water injection pump 653 to cooperate with the water injection pump 653 to perform water injection and pumping operations, while ensuring the sealing inside the water bag 651. When the filling hose is not placed in the lifting seat 6, a small amount of water can be injected into the water bag 651 first, and then most of the water can be injected later, so that the resistance encountered by the water bag 651 when injecting water is more uniform, which is conducive to the injection of water. When the filling hose needs to be taken out from the filling hose, the water in the water bag 651 is first extracted using the water filling pump 653, which can greatly facilitate the removal of the filling hose from the lifting seat 6.

[0056] The traction rotation mechanism 8 includes a telescopic traction device 81 and two traction springs 82. The fixed end of the telescopic traction device 81 is fixedly connected to the filling skid assembly 3. The protruding end of the telescopic traction device 81 is provided with a traction hole 83. One end of the two traction springs 82 is fixedly connected to the traction hole 83, and the other end is fixedly connected to the two lifting seats 6. The lifting seat 6 is provided with a traction ear plate 66 that cooperates with the traction spring 82, and the traction ear plate 66 is fixedly connected to the traction spring 82. The telescopic traction device 81 is a hydraulic telescopic cylinder, an electric push rod, a gas rod or a threaded elevator. When the telescopic traction device 81 is extended to the maximum or minimum stroke, the angle between the two traction springs 82 is less than 180 degrees, and the angle between the two traction springs 82 is preferably between 90 and 145 degrees.

[0057] like Figure 5 As shown, the locking mechanism 9 includes a locking plate 91 and a lifting device 93. The locking plate 91 is provided with locking square holes 92 that cooperate with the two lifting seats 6. The locking plate 91 is connected to the filling skid assembly 3 through the lifting device 93. The lifting device 93 is a hydraulic telescopic cylinder or a threaded lifter. In actual implementation, in order to prevent the lifting of the locking plate 91 from interfering with the rotation of the lifting seat 6, the maximum height that the locking plate 91 can rise should be lower than the bottom of the rotating cylinder sleeve 62. In the specific implementation process, the length of the upper square sleeve 621 is much greater than the length of the lower cylindrical sleeve 622.

[0058] The filling skid assembly 3 includes a support platform 31 and a plurality of I-beams 32. The support platform 31 is fixed on the top of the plurality of I-beams 32, and the bottom of the I-beams 32 is fixedly connected to the main deck 1. A filling hose mounting seat 33 for mounting the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5, and a traction device mounting seat 34 for mounting the telescopic traction device 81 are provided on the support platform 31. In another embodiment, the support platform 31 can also be replaced with a frame bottom formed by welding I-beams, so that the constituent materials of the filling skid assembly 3 are more uniform, which facilitates the assembly of the filling skid assembly 3 and further enhances the stability of the filling skid H support.

[0059] A method for using an LNG ship-to-ship bunkering hose bracket device comprises the following steps:

[0060] S1. Install two support seats 6 on the filling skid assembly 3;

[0061] The rotating mounting seat 7 is fixed to the filling skid assembly 3 through the mounting seat 72, and then the lifting seat 6 is fixed to the rotating shaft 71 of the rotating mounting seat 7 through the rotating cylinder sleeve 62, so that the installation of the two lifting seats 6 is completed;

[0062] S2, connecting the two lifting seats 6 to the telescopic traction device 81;

[0063] The lifting seat 6 is connected to the output end of the telescopic traction device 81 through the traction spring 82, so as to complete the connection between the lifting seat 6 and the telescopic traction device 81 at two locations; specifically, one end of the traction spring 82 is connected to the traction ear plate 66 of the lifting seat 6, and the other end of the traction spring 82 is fixedly connected to the traction hole 83 at the output end of the telescopic traction device 81;

[0064] S3. Before use, the two lifting seats 6 are pulled and rotated to the working position by the pulling and rotating mechanism 8;

[0065] First, the lifting device 93 is controlled to be telescopic to the lowest position, so that the locking square hole 92 of the locking plate 91 enters the outside of the lower cylindrical sleeve 622, and then the telescopic traction device 81 is controlled to be telescopic to the farthest stroke, and the extended end of the telescopic traction device 81 drives the two traction springs 82 to move, and the two traction springs 82 respectively drive the two lifting seats 6 to rotate to the working position, so that the lifting seats 6 contact the working limiter 63. When the lifting seats 6 contact the working limiter 63, the lifting device 93 is controlled to be telescopic to the highest position, so that the locking square hole 92 of the locking plate 91 enters the outside of the upper square sleeve 621, and the two lifting seats 6 are locked;

[0066] S4, installing the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5 on the filling skid assembly 3 and the lifting seat 6;

[0067] The liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5 are first installed on the filling skid assembly 3, and then the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5 are respectively placed on the lifting seat 6;

[0068] S5, using the water bag limiting fastening mechanism 65 to fix the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5;

[0069] The water injection pump 653 is controlled to work, and the water injection pump 653 pumps water in the water tank into the water bag 651, so that the water bag 651 is filled with water, and the filling hose is squeezed and fixed by the water bag 651 filled with water;

[0070] S6, filling the ship with LNG through the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5;

[0071] During the ship-to-ship LNG filling process, the lifting seat 6 isolates the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5 from the main deck 1 and the side outer plate 2; specifically, when the liquid-phase LNG filling hose 4 is transporting liquid LNG, the external temperature of the liquid-phase LNG filling hose 4 is much lower than the freezing point of water, so that the water bag 651 wrapped around the liquid-phase LNG filling hose 4 freezes quickly, and the water bag 651 expands in volume after freezing, thereby further squeezing and fixing the liquid-phase LNG filling hose 4 in the lifting seat 6, thereby further improving the fixing effect of the liquid-phase LNG filling hose 4;

[0072] S7, after completing the ship-to-ship LNG filling, rotating the lifting seat 6 to the storage position for storage;

[0073] After the liquid LNG filling is completed, after the water in the water bag 651 melts, the water in the water bag 651 is partially extracted through the water injection pump 653, and then the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5 are removed from the lifting seat 6, and the lifting device 93 is controlled to be extended to the lowest position first, so that the locking square hole 92 of the locking plate 91 enters the outside of the lower cylindrical sleeve 622, and then the telescopic traction device 81 is controlled to be extended to the shortest stroke, and the extended end of the telescopic traction device 81 drives the two traction springs 82 to move, and the two traction springs 82 respectively drive the two lifting seats 6 to rotate to the storage position, so that the lifting seat 6 contacts the storage limiter 64. When the lifting seat 6 contacts the storage limiter, the lifting device 93 is controlled to be extended to the highest position, so that the locking square hole 92 of the locking plate 91 enters the outside of the upper square sleeve 621, and the two lifting seats 6 are locked to complete the storage of the lifting seat 6. Figure 6 When the liquid-phase LNG filling hose 4 stops filling, hot water can be poured on the support seat 6 to melt a small amount of water in the water bag 651 on the support seat 6, and the melted water is pumped out by the water injection pump 653, so that the liquid-phase LNG filling hose 4 can be taken out from the support seat 6 more conveniently.

Claims

1. An LNG ship-to-ship filling hose bracket device, used in conjunction with a liquid-phase LNG filling hose (4) and a gas-phase LNG filling hose (5), characterized in that: The invention comprises a filling skid assembly (3) installed on the main deck (1), the filling skid assembly (3) being provided with two lifting seats (6) respectively matched with a liquid-phase LNG filling hose (4) and a gas-phase LNG filling hose (5), the two lifting seats (6) being rotatably installed on the filling skid assembly (3), and the filling skid assembly (3) being provided with a traction rotation mechanism (8) for driving the lifting seats (6) to rotate; The lifting seat (6) comprises a lifting body (61) and a rotating drum sleeve (62); the lifting body (61) is L-shaped, and an open filling hose channel is formed at the top of the lifting seat (6); the transverse cross-section of the lifting body (61) is U-shaped, and a water bag limiting and fastening mechanism (65) for installing a filling hose is arranged inside the lifting seat (6).

2. The LNG ship-to-ship bunkering hose bracket device according to claim 1, characterized in that: The traction rotation mechanism (8) comprises a telescopic traction device (81) and two traction springs (82); the fixed end of the telescopic traction device (81) is fixedly connected to the filling skid assembly (3); the protruding end of the telescopic traction device (81) is provided with a traction hole (83); one end of the two traction springs (82) is fixedly connected to the traction hole (83), and the other end is fixedly connected to two lifting seats (6) respectively; the lifting seat (6) is provided with a traction ear plate (66) matched with the traction spring (82); the traction ear plate (66) is fixedly connected to the traction spring (82).

3. The LNG ship-to-ship bunkering hose bracket device according to claim 2 is characterized in that: The telescopic traction device (81) is a hydraulic telescopic cylinder, an electric push rod, a gas rod or a threaded elevator.

4. The LNG ship-to-ship bunkering hose bracket device according to claim 1, characterized in that: The locking mechanism (9) comprises a locking plate (91) and a lifting device (93); the locking plate (91) is provided with locking square holes (92) that cooperate with two lifting seats (6); the locking plate (91) is connected to the filling skid assembly (3) via the lifting device (93); the lifting device (93) is a hydraulic telescopic cylinder or a threaded lifter.

5. The LNG ship-to-ship bunkering hose bracket device according to claim 1, characterized in that: The filling skid assembly (3) is provided with a rotating mounting seat (7) for mounting a rotating cylinder sleeve (62); the rotating mounting seat (7) comprises a rotating shaft (71) and a mounting seat (72); the rotating shaft (71) is fixedly connected to the mounting seat (72); and the bottom of the mounting seat (72) is fixedly connected to the filling skid assembly (3).

6. The LNG ship-to-ship bunkering hose bracket device according to claim 1, characterized in that: The rotating cylinder sleeve (62) comprises an upper square sleeve (621) and a lower cylindrical sleeve (622), and the side length of the upper square sleeve (621) is equal to the diameter of the lower cylindrical sleeve (622).

7. The LNG ship-to-ship bunkering hose bracket device according to claim 1, characterized in that: A working limit piece (63) and a storage limit piece (64) are respectively arranged on both sides of the rotation of each lifting seat (6); the working limit piece (63) and the storage limit piece (64) are limit rods or limit plates; and the rotation angle of each lifting seat (6) is 90 degrees.

8. The LNG ship-to-ship bunkering hose bracket device according to claim 7, characterized in that: When the lifting seat (6) contacts the working limiter (63), the inlet sides of the filling hose channels of the two lifting seats (6) are aligned with the filling hose; when the lifting seat (6) contacts the storage limiter (64), the inlet sides of the L-shaped pipeline channels of the two lifting seats (6) are aligned towards each other.

9. The LNG ship-to-ship bunkering hose bracket device according to claim 1, characterized in that: The water bag limiting and fastening mechanism (65) comprises a water bag (651), a water injection pump (653) and a water tank. The water bag (651) is provided with a water injection port (652). The water outlet of the water injection pump (653) is connected to the water injection port (652) via a pipe, and the water inlet is connected to the water tank via a pipe. The transverse cross section of the water bag (651) is U-shaped, and the outer side of the water bag (651) is glued and fixed to the inner wall of the lifting seat (6).

10. The method for using the LNG ship-to-ship filling hose bracket device according to any one of claims 1 to 9 comprises the following steps: S1. Install two support seats (6) on the filling skid assembly (3); The rotating mounting seat (7) is fixed to the filling skid assembly (3) through the mounting seat (72), and then the lifting seat (6) is fixed to the rotating shaft (71) of the rotating mounting seat (7) through the rotating sleeve (62), thereby completing the installation of the two lifting seats (6); S2, connecting the two lifting seats (6) to the telescopic traction device (81); The lifting seat (6) is connected to the output end of the telescopic traction device (81) through a traction spring (82), so as to complete the connection between the lifting seat (6) and the telescopic traction device (81) at two locations; specifically, one end of the traction spring (82) is connected to the traction ear plate (66) of the lifting seat (6), and the other end of the traction spring (82) is fixedly connected to the traction hole (83) at the output end of the telescopic traction device (81); S3. Before use, the two lifting seats (6) are pulled and rotated to the working position by the pulling and rotating mechanism (8); First, the lifting device (93) is controlled to be telescopic to the lowest position, so that the locking square hole (92) of the locking plate (91) enters the outside of the lower cylindrical sleeve (622), and then the telescopic traction device (81) is controlled to be telescopic to the farthest stroke, and the extended end of the telescopic traction device (81) drives the two traction springs (82) to move, and the two traction springs (82) respectively drive the two lifting seats (6) to rotate to the working position, so that the lifting seats (6) contact the working limit member (63). When the lifting seats (6) contact the working limit member (63), the lifting device (93) is controlled to be telescopic to the highest position, so that the locking square hole (92) of the locking plate (91) enters the outside of the upper square sleeve (621), and the two lifting seats (6) are locked; S4, installing a liquid-phase LNG filling hose (4) and a gas-phase LNG filling hose (5) on the filling skid assembly (3) and the lifting seat (6); The liquid-phase LNG filling hose (4) and the gas-phase LNG filling hose (5) are first installed on the filling skid assembly (3), and then the liquid-phase LNG filling hose (4) and the gas-phase LNG filling hose (5) are respectively placed on the lifting seat (6); S5, using the water bag limiting fastening mechanism (65) to fix the liquid-phase LNG filling hose (4) and the gas-phase LNG filling hose (5); The water injection pump (653) is controlled to work, and the water injection pump (653) pumps water in the water tank into the water bag (651), so that the water bag (651) is filled with water, and the filling hose is squeezed and fixed by using the water bag (651) that is filled with water and expanded; S6, filling the ship with LNG through the liquid-phase LNG filling hose (4) and the gas-phase LNG filling hose (5); During the process of ship-to-ship LNG bunkering, the lifting seat (6) isolates the liquid-phase LNG bunkering hose (4) and the gas-phase LNG bunkering hose (5) from the main deck (1) and the side outer plate (2); specifically, when the liquid-phase LNG bunkering hose (4) is transporting liquid LNG, the external temperature of the liquid-phase LNG bunkering hose (4) is much lower than the freezing point of water, so that the water bag (651) wrapping the liquid-phase LNG bunkering hose (4) freezes quickly, and the water bag (651) expands in volume after freezing, thereby further squeezing and fixing the liquid-phase LNG bunkering hose (4) in the lifting seat (6), thereby further improving the fixing effect of the liquid-phase LNG bunkering hose (4); S7, after completing the ship-to-ship LNG bunkering, the lifting seat (6) is rotated to the storage position for storage; After the liquid LNG filling is completed and the water in the water bag (651) is melted, the water in the water bag (651) is partially pumped out by the water filling pump (653), and then the liquid-phase LNG filling hose (4) and the gas-phase LNG filling hose (5) are removed from the lifting seat (6). The lifting device (93) is first controlled to be extended to the lowest position so that the locking square hole (92) of the locking plate (91) enters the outside of the lower cylindrical sleeve (622), and then the telescopic traction device (81) is controlled to be extended to the shortest stroke. The extended end of the housing (81) drives the two traction springs (82) to move, and the two traction springs (82) respectively drive the two lifting seats (6) to rotate to the storage position, so that the lifting seats (6) contact the storage limiter (64). When the lifting seats (6) contact the storage limiter, the lifting device (93) is controlled to extend and retract to the highest position, so that the locking square hole (92) of the locking plate (91) enters the outside of the upper square sleeve (621), the two lifting seats (6) are locked, and the storage of the lifting seats (6) is completed.

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