LNG ship-to-ship bunkering hose cradle arrangement and method of use thereof

Abstract

The application discloses a LNG ship-to-ship filling hose bracket device and a use method thereof, which comprises a filling pry assembly installed on a main deck, two lifting seats arranged on the filling pry assembly, the two lifting seats being rotatably installed on the filling pry assembly, and a traction rotating mechanism arranged on the filling pry assembly and used for driving the lifting seats to rotate; the lifting seat comprises a lifting main body and a rotating barrel sleeve, and an open filling hose channel is formed at the top of the lifting seat; the transverse section of the lifting main body is in a U shape, and a water bag limiting and fastening mechanism for installing the filling hose is arranged in the lifting seat. In the process of filling LNG through ship-to-ship, the lifting seat lifts the liquid-phase LNG filling hose and the gas-phase LNG filling hose at the same time, and isolates the liquid-phase LNG filling hose and the gas-phase LNG filling hose from the main deck and the side plate, so that the ship structure which is not resistant to low temperature is protected from being damaged by the low temperature of the liquid-phase LNG. Meanwhile, the lifting seat makes the filling hose bear force more uniformly, and avoids LNG leakage accidents.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LNG ship-to-ship bunkering, and in particular to a LNG ship-to-ship bunkering hose bracket device and a method of using the same. BACKGROUND

[0002] In recent years, under the impetus of the global shipping decarbonization trend and increasingly stringent environmental protection regulations, more and more ships have begun to use green clean fuel. Among the various ship fuel alternatives, liquefied natural gas (LNG) has become the most commercially viable solution for early-stage carbon reduction in the shipping industry due to its comprehensive competitiveness in safety, cost, technical maturity, supply availability, and regulatory completeness. It has gained favor among many shipowners. Currently, there are three main ways to achieve LNG bunkering for LNG fuel-powered ships: tank truck-to-ship bunkering, shore station-to-ship bunkering, and ship-to-ship bunkering. Compared with other LNG bunkering methods, ship-to-ship bunkering can achieve simultaneous cargo handling / passenger boarding and bunkering operations after thorough risk assessment, and has larger bunkering capacity and higher efficiency than tank truck-to-ship bunkering. In addition, this bunkering method is flexible and can be performed while the receiving ship is at anchor or in other situations, making it particularly suitable for ships with short port turnaround times. Therefore, LNG ship-to-ship bunkering is the best choice to meet the fuel needs of large LNG-powered ships, and major ports also attach great importance to the layout of ship-to-ship LNG bunkering business. The LNG ship-to-ship bunkering industry is also expected to experience a period of vigorous development.

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

[0004] 1. When bunkering LNG fuel from ship to ship, an LNG bunkering hose is usually used. Since there is a flow of liquid LNG at extremely low temperature inside the hose during the bunkering process, if the hose comes into contact with the ship body which is not resistant to low temperature, it will cause low-temperature embrittlement of the steel plate structure, resulting in a decrease in the strength of the steel plate and posing a threat to the structural strength of the ship.

[0005] 2. The existing LNG bunkering hose rack design has deficiencies, lacking a lifting function for the LNG hose, which causes the hose to naturally sag during bunkering, resulting in a high degree of distortion and stress concentration at the connection, which can easily damage the hose and cause LNG leakage accidents. Therefore, there is an urgent need for a LNG ship-to-ship bunkering hose bracket device that can protect the ship body and improve bunkering safety. SUMMARY

[0006] In view of the above deficiencies of the prior art, the present application provides a LNG ship-to-ship bunkering hose bracket device and a method of using the same.

[0007] To achieve the above-mentioned purposes, the technical solutions adopted by the present application are as follows:

[0008] The application provides an LNG ship-to-ship filling hose bracket device, which comprises a filling pry assembly installed on a main deck, two lifting seats for cooperating with liquid-phase LNG filling hoses and gas-phase LNG filling hoses are respectively arranged on the filling pry assembly, the two lifting seats are rotatably installed on the filling pry assembly, and a traction rotating mechanism for driving the lifting seats to rotate is arranged on the filling pry assembly; the lifting seat comprises a lifting main body and a rotating cylinder sleeve, the lifting main body is in an L shape, and a top of the lifting seat forms an open filling hose channel; a transverse section of the lifting main body is in a U shape, and a water bag limiting and fastening mechanism for installing the filling hose is arranged in the lifting seat.

[0009] Further, the traction rotating mechanism comprises a telescopic traction device and two traction springs, a fixed end of the telescopic traction device is fixedly connected with the filling pry assembly, an extension end of the telescopic traction device is provided with a traction hole, one end of each of the two traction springs is fixedly connected with the traction hole, and the other end of each of the two traction springs is fixedly connected with the two lifting seats respectively; a traction lug plate matched with the traction spring is arranged on the lifting seat, and the traction lug plate is fixedly connected with the traction spring.

[0010] Further, the telescopic traction device is a hydraulic telescopic cylinder, an electric push rod, an air rod or a threaded lifter.

[0011] Further, the locking mechanism comprises a locking plate and a lifting device, the locking plate is provided with locking square holes matched with the two lifting seats, the locking plate is connected with the filling pry assembly through the lifting device, and the lifting device is a hydraulic telescopic cylinder or a threaded lifter.

[0012] Further, the filling pry assembly is provided with a rotary mounting seat for mounting the rotating cylinder sleeve, the rotary mounting seat comprises a rotating shaft and a mounting seat, the rotating shaft is fixedly connected with the mounting seat, and the bottom of the mounting seat is fixedly connected with the filling pry assembly.

[0013] Further, the rotating cylinder 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] Further, rotary two sides of each lifting seat are respectively provided with a working limiting piece and a storage limiting piece, the working limiting piece and the storage limiting piece are limiting rods or limiting plates, and the rotation angle of each lifting seat is 90 degrees.

[0015] Further, when the lifting seat is in contact with the working limiting piece, the filling hose channel inlet sides of the two lifting seats are aligned with the filling hoses; and when the lifting seat is in contact with the storage limiting piece, the L-shaped pipeline channel inlet sides of the two lifting seats are aligned with each other.

[0016] Further, the water bag limiting and fastening mechanism comprises a water bag, a water injection pump and a water tank, the water bag is provided with a water injection port, the water outlet end of the water injection pump is connected with the water injection port through a pipeline, and the water inlet end is connected with the water tank through a pipeline; the transverse section of the water bag is in a U shape, and the outer side of the water bag is fixedly attached to the inner wall of the lifting seat.

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

[0018] S1, installing two lifting seats on the filling jack assembly;

[0019] The rotating mounting seat is fixed on the filling jack 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, thereby completing the installation of the two lifting seats;

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

[0021] The lifting seat is connected with the output end of the telescopic traction device through the traction spring, thereby completing the connection of the two lifting seats with the telescopic traction device; specifically, one end of the traction spring is connected with the traction ear plate of the lifting seat, and the other end of the traction spring is fixedly connected with the traction hole of 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 traction rotating mechanism;

[0023] First, control the lifting device to extend 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 to the farthest stroke, the extending end of the telescopic traction device drives the two traction springs to move, and the two traction springs drive the two lifting seats to rotate to the working position, so that the lifting seat contacts the working limiting piece; after the lifting seat contacts the working limiting piece, control the lifting device to extend to the highest position, so that the locking square hole of the locking plate enters the outside of the upper square sleeve, thereby locking the two lifting seats;

[0024] S4, installing liquid-phase LNG filling hoses and gas-phase LNG filling hoses on the filling jack assembly and the lifting seat;

[0025] First, install the liquid-phase LNG filling hoses and the gas-phase LNG filling hoses on the filling jack assembly, and then install the liquid-phase LNG filling hoses and the gas-phase LNG filling hoses on the lifting seat;

[0026] S5, fixing the liquid-phase LNG filling hoses and the gas-phase LNG filling hoses by using the water bag limiting and fastening mechanism;

[0027] Control the water injection pump to work, and the water injection pump pumps the water in the water tank into the water bag, so that the water bag is filled with water, and the water bag filled with water is used to extrude and fix the filling hoses;

[0028] S6, filling LNG into the ship through the liquid-phase LNG filling hoses and the gas-phase LNG filling hoses;

[0029] In the process of ship-to-ship LNG filling, the lifting seat isolates the liquid-phase LNG filling hose and the gas-phase LNG filling hose from the main deck and the side plate; specifically, when the liquid-phase LNG filling hose is conveying liquid-phase LNG, the temperature outside the liquid-phase LNG filling hose is far below the freezing point of water, so that the water bag wrapping the liquid-phase LNG filling hose rapidly freezes and expands in volume after freezing, thereby further extruding 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.

[0030] S7, after completing the ship-to-ship LNG filling, rotating the lifting seat to the storage position for storage;

[0031] After the liquid-phase LNG filling is completed, after the water in the water bag is melted, the water in the water bag is partially pumped out through the water pump, and then the liquid-phase LNG filling hose and the gas-phase LNG filling hose are unloaded from the lifting seat; first, control the lifting device to extend 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 extension and retraction traction device to extend to the shortest stroke, the extension end of the extension and retraction traction device drives the two traction springs to move, the two traction springs drive the two lifting seats to rotate to the storage position respectively, so that the lifting seat contacts the storage limiting piece; when the lifting seat contacts the storage limiting piece, control the lifting device to extend 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, and the storage of the lifting seat is completed.

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

[0033] The lifting seat of the present application is rotatably arranged on the filling pry assembly through the rotating mounting seat, and can be rotated to change the position of the lifting seat through the traction rotating mechanism, and the working limiting piece and the storage limiting piece are matched to realize the switching of the working position and the storage position of the lifting seat.

[0034] The locking mechanism of the present application includes 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 and ensuring the stability of the lifting seat during work, and the lifting seat is effectively fixed after storage. The locking mechanism facilitates the locking of the lifting seat, improves the work efficiency of the workers, and ensures the stability and safety of the liquid-phase LNG filling hose and the gas-phase LNG filling hose during filling.

[0035] In the process of ship-to-ship LNG filling, the lifting seat lifts the liquid-phase LNG filling hose and the gas-phase LNG filling hose while isolating the LNG filling hose and the gas-phase LNG filling hose from the main deck and the side plate, thereby protecting the ship body which is not resistant to low temperature from being damaged by the low temperature of the liquid-phase LNG.

[0036] The water bag is arranged in the lifting seat, and the water bag is wrapped around the filling hose, when the water bag is filled with water, the filling hose can be wrapped, fixed and limited by the expanded water bag, so that the liquid-phase LNG filling hose and the gas-phase LNG filling hose are more stable during filling. Meanwhile, when the liquid-phase LNG filling hose is conveying liquid-phase LNG, the temperature outside the liquid-phase LNG filling hose is far below the freezing point of water, so that the water bag wrapped around the liquid-phase LNG filling hose is quickly frozen, the water bag is expanded in volume after being frozen, so as to further extrude and fix 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 lifting seat of the present application can lift the liquid-phase LNG filling hose and the gas-phase LNG filling hose, avoid the problem that the steel plate is low-temperature brittle due to the contact of the low-temperature hose with the low-temperature-resistant ship body, and further reduce the adverse effect of the hose on the strength of the low-temperature-resistant ship body. Meanwhile, the two sides of the U-shaped lifting seat can prevent the hose from sliding left and right, and further limit the filling hose. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 for the overall structure of the present application Figure 1 ;

[0039] Figure 2 for the overall structure of the present application Figure 2 ;

[0040] Figure 3 for the structure of the lifting seat and the locking mechanism

[0041] Figure 4 for the structure of the lifting seat

[0042] Figure 5 for the structure of the locking mechanism

[0043] Figure 6 for the schematic diagram of the lifting seat of the present application after being stored

[0044] The main component symbols in the figure are as follows:

[0045] 1, main deck; 2, side plate; 3, filling pry assembly; 31, support platform; 32, I-beam; 33, filling hose mounting seat; 34, traction device mounting seat; 4, liquid-phase LNG filling hose; 5, gas-phase LNG filling hose

[0046] 6, lifting seat; 61, lifting main body; 62, rotary drum sleeve; 621, upper square sleeve; 622, lower cylindrical sleeve; 63, working limit piece; 64, storage limit piece; 65, water bag limit fastening mechanism; 651, water bag; 652, water inlet; 653, water pump; 66, traction lug plate;

[0047] 7, rotary mounting seat; 71, rotary shaft; 72, mounting seat;

[0048] 8, traction rotary mechanism; 81, telescopic traction device; 82, traction tension spring; 83, traction hole;

[0049] 9, locking mechanism; 91, locking plate; 92, locking square hole; 93, lifting device. DETAILED DESCRIPTION

[0050] The specific embodiments of the present application are described below to facilitate the understanding of the present application for those skilled in the art, but it should be clear that the present application is not limited to the scope of the specific embodiments, and for those skilled in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all the inventions utilizing the concept of the present application are within the scope of protection.

[0051] As shown in Figure 1 and 2 , the LNG ship-to-ship filling hose bracket device is used in cooperation with the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5, the LNG ship-to-ship filling hose bracket device comprises a filling pry assembly 3 installed on the main deck 1, the filling pry assembly 3 is provided with two lifting seats 6 respectively cooperating 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 pry assembly 3, and the filling pry assembly 3 is provided with a traction rotary mechanism 8 driving the rotation of the lifting seats 6.

[0052] As shown in Figure 3 , the rotary two sides of each lifting seat 6 are respectively provided with a working limit piece 63 and a storage limit piece 64, the working limit piece 63 and the storage limit piece 64 can be preferably limit rods or limit plates, and the rotation angle of each lifting seat 6 is 90 degrees. When the lifting seat 6 is in contact with the working limit piece 63, the filling hose passage inlet sides of the two lifting seats 6 are aligned with the filling hoses. When the lifting seat 6 is in contact with the storage limit piece 64, the L-shaped pipeline passage inlet sides of the two lifting seats 6 are aligned in opposite directions. Travel switches can also be provided on the working limit piece 63 and the storage limit piece 64 to control the working state of the telescopic traction device 81 and the lifting device 93.

[0053] As shown in Figure 4As shown, the rotary sleeve 62 comprises an upper square sleeve 621 and a lower cylindrical sleeve 622, the side length of the upper square sleeve 621 is equal to the diameter of the lower cylindrical sleeve 622. The lifting seat 6 comprises a lifting body 61 and the rotary sleeve 62, the lifting body 61 is L-shaped, and the top of the lifting seat 6 forms an open filling hose passage. The transverse section of the lifting body 61 is U-shaped, and the water bag limiting and fastening mechanism 65 for installing the filling hose is arranged 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 rotary mounting seat 7 through the rotary sleeve 62, and the rotating shaft 71 and the rotary sleeve 62 can be further limited in axis by arranging screws or annular grooves, so as to avoid the up-and-down swing of the lifting seat 6 under the heaving action of the ship body.

[0054] The rotary mounting seat 7 for installing the rotary sleeve 62 is arranged on the filling pry assembly 3, and the rotary mounting seat 7 comprises a rotating shaft 71 and a mounting seat 72, the rotating shaft 71 is fixedly connected with the mounting seat 72, and the bottom of the mounting seat 72 is fixedly connected with the filling pry assembly 3. The mounting seat 72 is welded on the filling pry assembly 3, and a reinforcing rib plate can also be welded to further strengthen the connection strength between the mounting seat 72 and the filling pry assembly 3.

[0055] 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 end of the water injection pump 653 is connected with the water injection port 652 through a pipeline, and the water inlet end is connected with the water tank through a pipeline. The transverse section of the water bag 651 is U-shaped, and the outer side of the water bag 651 is fixedly attached to the inner wall of the lifting seat 6. A flow valve can also be arranged at the output end of the water injection pump 653 to cooperate with the water injection pump 653 to perform water injection and water pumping operations, while ensuring the sealing of 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 is injected, so that the resistance received by the water bag 651 when injecting water is more uniform, which is beneficial to water injection. When the filling hose needs to be taken out from the filling hose, the water in the water bag 651 is partially pumped out by the water injection pump 653, which can greatly facilitate the taking out of the filling hose from the lifting seat 6.

[0056] The traction rotating 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 with the filling pry assembly 3. The telescopic traction device 81 is provided with a traction hole 83 at the extending end. One end of the two traction springs 82 is fixedly connected with the traction hole 83, and the other end is fixedly connected with the two lifting seats 6 respectively. The lifting seat 6 is provided with a traction lug 66 matched with the traction spring 82. The traction lug 66 is fixedly connected with the traction spring 82. The telescopic traction device 81 is a hydraulic telescopic cylinder, an electric push rod, an air rod or a threaded lifter. When the telescopic traction device 81 is extended to the maximum or minimum stroke, the included angle between the two traction springs 82 is less than 180 degrees, and the angle between the two traction springs 82 is preferably between 90-145 degrees.

[0057] As shown in Figure 5 , the locking mechanism 9 comprises a locking plate 91 and a lifting device 93. The locking plate 91 is provided with a locking square hole 92 matched with the two lifting seats 6. The locking plate 91 is connected with the filling pry 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 avoid interference between the lifting of the locking plate 91 and the rotation of the lifting seat 6, the highest height of the locking plate 91 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 larger than the length of the lower cylindrical sleeve 622.

[0058] The filling pry assembly 3 comprises 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. The bottom of the I-beam 32 is fixedly connected with the main deck 1. The support platform 31 is provided with 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. In another embodiment, the support platform 31 can be replaced by a frame bottom composed of I-beam welding, so that the materials of the filling pry assembly 3 are more uniform, the assembly of the filling pry assembly 3 is facilitated, and the stability of the filling pry H support is further enhanced.

[0059] A method for using an LNG ship-to-ship filling hose bracket device, comprising the following steps:

[0060] S1, installing two lifting seats 6 on the filling pry assembly 3;

[0061] The rotating mounting seat 7 is fixed on the filling pry assembly 3 through the mounting seat 72. Then the lifting seat 6 is fixed on the rotating shaft 71 of the rotating mounting seat 7 through the rotating cylinder sleeve 62, and the installation of the two lifting seats 6 is completed.

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

[0063] The output end of the telescopic traction device 81 is connected with the lifting seat 6 through a traction tension spring 82, and the connection between the two lifting seats 6 and the telescopic traction device 81 is completed; specifically, one end of the traction tension spring 82 is connected with the traction lug plate 66 of the lifting seat 6, and the other end of the traction tension spring 82 is fixedly connected with the traction hole 83 of 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 through the traction rotating mechanism 8;

[0065] First, the lifting device 93 is controlled to be telescoped 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 telescoped to the farthest stroke, the extension end of the telescopic traction device 81 drives the two traction tension springs 82 to move, and the two traction tension springs 82 drive the two lifting seats 6 to rotate to the working position respectively, so that the lifting seat 6 is in contact with the working limiting piece 63; after the lifting seat 6 is in contact with the working limiting piece 63, the lifting device 93 is controlled to be telescoped 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, the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5 are installed on the filling crowbar 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 crowbar 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, the water bag limiting and fastening mechanism 65 is used 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, the water injection pump 653 pumps the water in the water tank into the water bag 651, so that the water bag 651 is filled with water, and the water bag 651 filled with water is used to extrude and fix the filling hose;

[0070] S6, LNG is filled into the ship 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 plate 2; specifically, when the liquid-phase LNG filling hose 4 is conveying liquid LNG, the temperature outside the liquid-phase LNG filling hose 4 is far below the freezing point of water, so that the water bag 651 wrapping the liquid-phase LNG filling hose 4 rapidly freezes, and the water bag 651 expands in volume after freezing, thereby further extruding 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 the completion of the ship-to-ship LNG filling, the lifting seat 6 is rotated to the storage position for storage;

[0073] After the liquid LNG filling is completed, after the water in the water bag 651 is melted, the water in the water bag 651 is first partially pumped out by the water injection pump 653, and then the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5 are unloaded from the lifting seat 6. First, the lifting device 93 is controlled to extend 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 extend to the shortest stroke. The extension end of the telescopic traction device 81 drives the two traction springs 82 to move, and the two traction springs 82 drive the two lifting seats 6 to rotate to the storage position, so that the lifting seat 6 contacts with the storage limiting piece 64. When the lifting seat 6 contacts with the storage limiting piece, the lifting device 93 is controlled to extend 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. The storage of the lifting seat 6 is completed, as shown in FIG. 8. When the liquid-phase LNG filling hose 4 stops filling, hot water can be poured on the lifting seat 6 to slightly melt the water in the water bag 651 on the lifting seat 6. After the melted water is pumped out by the water injection pump 653, the liquid-phase LNG filling hose 4 is further facilitated to be taken out from the lifting seat 6. Figure 6 After the liquid LNG filling is completed, after the water in the water bag 651 is melted, the water in the water bag 651 is first partially pumped out by the water injection pump 653, and then the liquid-phase LNG filling hose 4 and the gas-phase LNG filling hose 5 are unloaded from the lifting seat 6. First, the lifting device 93 is controlled to extend 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 extend to the shortest stroke. The extension end of the telescopic traction device 81 drives the two traction springs 82 to move, and the two traction springs 82 drive the two lifting seats 6 to rotate to the storage position, so that the lifting seat 6 contacts with the storage limiting piece 64. When the lifting seat 6 contacts with the storage limiting piece, the lifting device 93 is controlled to extend 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. The storage of the lifting seat 6 is completed, as shown in FIG. 8. When the liquid-phase LNG filling hose 4 stops filling, hot water can be poured on the lifting seat 6 to slightly melt the water in the water bag 651 on the lifting seat 6. After the melted water is pumped out by the water injection pump 653, the liquid-phase LNG filling hose 4 is further facilitated to be taken out from the lifting seat 6.

Claims

1. An LNG ship-to-ship bunkering hose bracket device, used in conjunction with a liquid LNG bunkering hose (4) and a gaseous LNG bunkering hose (5), characterized in that, Includes a refueling skid assembly (3) installed on the main deck (1), wherein the refueling skid assembly (3) is provided with two lifting seats (6) that cooperate with the liquid phase LNG refueling hose (4) and the gas phase LNG refueling hose (5), the two lifting seats (6) are rotatably installed on the refueling skid assembly (3), and the refueling skid assembly (3) is provided with a traction rotation mechanism (8) that drives the lifting seats (6) to rotate. The lifting seat (6) includes a lifting body (61) and a rotating sleeve (62). The lifting body (61) is L-shaped, and the top of the lifting seat (6) forms an open channel for the filling hose. The transverse cross section of the lifting body (61) is U-shaped, and the lifting seat (6) is provided with a water bladder limiting and fastening mechanism (65) for installing the filling hose. 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 extended 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). The lifting seat (6) is provided with a traction ear plate (66) that cooperates with the traction spring (82). The traction ear plate (66) is fixedly connected to the traction spring (82). It also includes a locking mechanism (9), which includes a locking plate (91) and a lifting device (93). The locking plate (91) is provided with a locking square hole (92) that cooperates with two support 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 lift. Each of the lifting seats (6) is provided with a working limiter (63) and a storage limiter (64) on both sides of rotation. The working limiter (63) and the storage limiter (64) are limit rods or limit plates. The rotation angle of each lifting seat (6) is 90 degrees. When the lifting seat (6) contacts the working limit member (63), the inlet side of the filling hose channel of the two lifting seats (6) is aligned with the filling hose; when the lifting seat (6) contacts the storage limit member (64), the inlet side of the filling hose channel of the two lifting seats (6) is aligned with each other.

2. The LNG ship-to-ship bunkering hose bracket device according to claim 1, characterized in that, The telescopic traction device (81) is a hydraulic telescopic cylinder, an electric push rod, a pneumatic rod, or a threaded jack.

3. The LNG ship-to-ship bunkering hose bracket device according to claim 2, characterized in that, The filling skid assembly (3) is provided with a rotating mounting seat (7) for mounting a rotating sleeve (62). 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).

4. The LNG ship-to-ship bunkering hose bracket device according to claim 3, characterized in that, The rotating sleeve (62) includes an upper square sleeve (621) and a lower cylindrical sleeve (622), wherein the side length of the upper square sleeve (621) is equal to the diameter of the lower cylindrical sleeve (622).

5. The LNG ship-to-ship bunkering hose bracket device according to claim 4, characterized in that, The water bladder limiting and fastening mechanism (65) includes a water bladder (651), a water pump (653), and a water tank. The water bladder (651) is provided with a water inlet (652). The outlet end of the water pump (653) is connected to the water inlet (652) through a pipe, and the inlet end is connected to the water tank through a pipe. The transverse cross section of the water bladder (651) is U-shaped, and the outer side of the water bladder (651) is pasted and fixed to the inner wall of the support seat (6).

6. A method of using the LNG ship-to-ship bunkering hose bracket device as described in claim 5, comprising the following steps: S1. Install two support seats (6) on the filling skid assembly (3); The rotating mounting base (7) is fixed to the filling skid assembly (3) via the mounting base (72), and then the lifting base (6) is fixed to the rotating shaft (71) of the rotating mounting base (7) via the rotating sleeve (62), thus completing the installation of the two lifting bases (6); S2. Connect 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) via a traction spring (82) to complete the connection between the two lifting seats (6) and the telescopic traction device (81); 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, use the traction and rotation mechanism (8) to pull and rotate the two support seats (6) to the working position; First, control the lifting device (93) to extend 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). Then, control the telescopic traction device (81) to extend to the farthest stroke. The extended end of the telescopic traction device (81) drives the two traction springs (82) to move. The two traction springs (82) drive the two lifting seats (6) to rotate to the working position, so that the lifting seats (6) contact the working limit piece (63). After the lifting seats (6) contact the working limit piece (63), control the lifting device (93) to extend 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) to lock the two lifting seats (6). S4. Install the liquid LNG refueling hose (4) and the gas LNG refueling hose (5) on the refueling skid assembly (3) and the support seat (6). First, install the liquid LNG refueling hose (4) and the gas LNG refueling hose (5) on the refueling skid assembly (3), and then place the liquid LNG refueling hose (4) and the gas LNG refueling hose (5) on the support base (6) respectively. S5. Use the water bladder limiting and fastening mechanism (65) to fix the liquid phase LNG refueling hose (4) and the gas phase LNG refueling hose (5); Control the water pump (653) to work. The water pump (653) draws water from the water tank into the water bladder (651) to fill the water bladder (651) with water. The water bladder (651) expands with water and squeezes and fixes the filling hose. S6. LNG is injected into the ship through the liquid phase LNG refueling hose (4) and the gas phase LNG refueling hose (5); During the ship-to-ship LNG refueling process, the support seat (6) isolates the liquid LNG refueling hose (4) and the gaseous LNG refueling hose (5) from the main deck (1) and the side plating (2). When the liquid LNG refueling hose (4) is transporting liquid LNG, the external temperature of the liquid LNG refueling hose (4) is much lower than the freezing point of water, causing the water bladder (651) surrounding the liquid LNG refueling hose (4) to freeze rapidly. After the water bladder (651) freezes, it expands in volume, thereby further squeezing and fixing the liquid LNG refueling hose (4) in the support seat (6), thereby further improving the fixing effect of the liquid LNG refueling hose (4). S7. After completing the ship-to-ship LNG refueling, rotate the lifting seat (6) to the storage position for storage. After the liquid LNG refueling is completed, once the water in the water bladder (651) has melted, the water in the water bladder (651) is partially pumped out by the water injection pump (653). Then, the liquid phase LNG refueling hose (4) and the gas phase LNG refueling hose (5) are removed from the lifting seat (6). First, the lifting device (93) is controlled to extend and retract 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). Then, the telescopic traction device (81) is controlled to extend and retract to the shortest stroke. The extended end of the device (81) drives two traction springs (82) to move. The two traction springs (82) drive the two lifting seats (6) to rotate to the storage position, so that the lifting seats (6) contact the storage limit member (64). After the lifting seats (6) contact the storage limit member, 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) to lock the two lifting seats (6) and complete the storage of the lifting seats (6).

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