Multi-functional methanol transportation and filling ship

Abstract

The utility model relates to a multifunctional methanol transportation and filling ship, which belongs to the technical field of shipbuilding. The ship has the functions of methanol transportation and methanol filling. When filling, the ship fills methanol and / or fuel oil. When filling methanol, the ship does not need the assistance of a tugboat and relies on the power positioning capability to have the ability to self-approach and leave the berth. The loading and unloading-filling platform in the middle of the ship and the filling platform at the bow of the ship meet the needs of different filling interface height differences and can fill different high-difference receiving ship types by adjusting the height of the filling platform. The ship also includes a device for quickly retracting and extending the approach ball, which can make the approach ball hover at any position from the two ship sides to the waterline, maintain a safe buffer distance between the two ships in the transverse direction, and the approach ball retraction and extension device has a wave compensation function to optimally reduce the stress on the retraction and extension device. The multi-point suspension device can make the number of buffer approach balls arranged when the two ships are berthed meet the operation requirements and expand the range of operation ship types.

Description

TECHNICAL FIELD

[0001] The present application relates to a multifunctional methanol transportation and refueling ship, belonging to the technical field of shipbuilding. BACKGROUND

[0002] In the past decade, LNG as a clean energy has been widely welcomed by domestic and foreign shipowners. LNG as a carbon-reducing fuel for ships has developed rapidly, and large LNG transportation ships, LNG refueling ships and LNG fuel ships are increasing. In recent years, international shipping giants have begun to build methanol fuel ships and signed cooperation agreements with green methanol producers and corresponding ports. It can be imagined that with the completion and gradual commissioning of methanol fuel ships, bulk methanol fuel transportation and refueling will inevitably become a hard requirement.

[0003] Currently, there are methanol transportation ships and methanol refueling ships in the market that have been modified from methanol transportation ships. There are certain limitations or restrictions in the process of ship-to-ship refueling, as follows:

[0004] 1. Methanol fuel ships need to burn about 5% of fuel oil while burning methanol fuel. After the methanol fuel ship is refueled, it needs to be refueled again with fuel oil, requiring two refueling operations.

[0005] 2. Currently, the refueling ship and the receiving ship in China use a ball floating on the water to buffer between the two ships. However, in actual operation, if the receiving ship is a V-shaped ship, the ball may be squeezed into the bottom of the ship when it floats on the waterline, and cannot effectively serve as a buffer, resulting in the inability to refuel such receiving ships and the loss of certain market space.

[0006] 3. The current refueling ships are mainly used for bow refueling. For cases where the interface height difference between the refueling ship and the receiving ship is large, the length of the hose may sometimes limit the operation.

[0007] 4. Currently, in domestic water refueling operations, the refueling ship is pushed and guarded by a tugboat, gradually approaching the receiving ship, requiring a large amount of manpower, resources and coordination, and the refueling ship cannot independently approach and leave the dock.

[0008] 5. The saddle on the current domestic refueling ship is fixed, and the U-bend is outside the hull during refueling operations. When not in operation, the saddle needs to be lifted by a crane and placed in a safe position inside the hull. The saddle is relatively difficult to collect and release, requiring repeated lifting and placing, increasing labor intensity and operation risk. SUMMARY

[0009] To solve the problems in the prior art, the present application provides a multifunctional methanol transportation and filling ship, which has the functions of methanol transportation and filling, and can fill methanol and fuel simultaneously during filling, has the ability of independently approaching and leaving a docked ship during methanol filling, and makes the approach ball reasonably buffer the methanol filling ship and the docked ship; and the methanol filling ship is provided with adjustable high and low filling stations to solve the problem of height difference of filling interfaces of different ship types. The use of the approach ball suspension and release device can make any two ships meet the approach requirement and increase the operation range of the methanol filling ship.

[0010] To solve the above technical problems, the present application adopts the technical scheme of a multifunctional methanol transportation and filling ship, wherein the cabin below the upper deck is provided with, from the bow to the stern, a bow area, a cargo cabin area, a front engine cabin area and an engine cabin area; the bow area comprises a bow tip cabin, a bow ballast cabin and an emergency fire pump cabin; the cargo cabin area is a double-hull double-bottom cabin, and the six pairs of ballast cabins in the double-hull and double-bottom areas are provided with one pair of fuel and methanol liquid cargo cabins, four pairs of liquid cargo cabins, one pair of dirty liquid cabin and one pair of methanol fuel storage cabin; the front engine cabin area is provided with a methanol daily use cabin and a methanol fuel preparation room; and the engine cabin is provided with a main engine and an auxiliary engine.

[0011] The middle and bow parts of the upper deck are provided with a midship loading-unloading and filling platform and a bow filling platform, and hydraulic hose cranes matched with the two platforms; the midship loading-unloading and filling platform is arranged above the liquid cargo cabin, and the bow filling platform is arranged above the fuel and methanol liquid cargo cabin; the midship loading-unloading and filling platform is arranged on the midship deck and is provided with a midship low loading-unloading and filling station and a midship high loading-unloading and filling station through a midship loading-unloading and filling platform lifting device; and the bow filling platform is arranged on the bow deck and is provided with a bow low filling station and a bow high filling station through a bow filling station platform lifting device.

[0012] The loading-unloading and filling platform and the bow filling platform further comprise a telescopic saddle, and the telescopic saddle comprises a base fixed on the deck and a sliding hose support, and the sliding hose support is provided with a U-shaped bending bracket for supporting the filling hose at the front end.

[0013] Rollers are arranged between the sliding hose support and the base, the sliding hose support slides relative to the base, the sliding hose support slides outwardly to the ship side during operation, the U-shaped bending bracket is completely moved to the ship side, and the sliding hose support is fixed to the base by a limiting pin; the sliding hose support slides inwardly to the ship side during non-operation, the U-shaped bending bracket is completely moved to the ship side, and the sliding hose support is fixed to the base by a limiting pin.

[0014] The bunkering ship is also provided with a fender retraction device, a retraction cable is arranged in the retraction device, and a fender is arranged at the bottom of the retraction cable; the fender retraction device also comprises an automatic control system for controlling the retraction, release and wave compensation of the retraction cable, and the automatic control system is provided with upper and lower threshold values of the tension of the retraction cable during wave compensation; when the automatic control system monitors that the tension of the retraction cable exceeds the upper threshold value, the automatic control system controls the release of the retraction cable, so that the tension of the retraction cable is between the upper and lower threshold values; when the automatic control system monitors that the tension of the retraction cable is lower than the lower threshold value, the automatic control system controls the retraction of the retraction cable, so that the tension of the retraction cable is between the upper and lower threshold values; the fender can be controlled at any height between the side water surface and the side top plate.

[0015] Further, the loading-unloading and bunkering platform and the bow bunkering platform further comprise an emergency disengaging device, a quick coupling, a saddle and a fall arrest system, a ship distance measuring system and an electrical control system.

[0016] Further, the low-position loading-unloading and bunkering station and the midship high-position loading-unloading and bunkering station comprise a liquid cargo bunkering pipe, a steam recovery pipe, a tank cleaning pipe, a fuel oil bunkering pipe and auxiliary nitrogen and fresh water pipelines.

[0017] The bow low-position bunkering station and the bow high-position bunkering station comprise a liquid cargo bunkering pipe, a steam recovery pipe, a fuel oil bunkering pipe and auxiliary nitrogen and fresh water pipelines.

[0018] Further, the bunkering ship is also provided with a multi-point suspension device, the fender in the multi-point suspension device is tied to an eye plate or an eye ring or an eye ring on the deck by an anchor chain. A single eye ring or eye plate can withstand a force of more than 20 tons.

[0019] Further, the bunkering ship further comprises a methanol fuel supply system, a methanol delivery pump draws methanol from a methanol fuel storage cabin and sends the methanol to a methanol daily use cabinet, methanol fuel in the methanol daily use cabinet is delivered to main engines and auxiliary machines in the engine room through a methanol supply unit and a control valve unit.

[0020] The present application has the following beneficial effects:

[0021] The present application provides a multifunctional methanol transportation and bunkering ship, which can meet the transportation of bulk methanol on water and the bunkering of various methanol-powered ships on water (including methanol and fuel oil for combustion), can enable the two ships to be docked at any ship type and can be compatible with transmission pipelines, so as to meet the bunkering requirements of different receiving ships and the loading and unloading requirements of different wharfs, and promote the healthy development of methanol alternative fuels.

[0022] (1) Ship with methanol transportation and bunkering functions

[0023] Based on the existing domestic dangerous chemical wharf berth and the future methanol fuel filling market forecast, combined with the existing order ship type of methanol fuel power ship and the possible future filling of PCTC and other special ship types, the ship is designed to have strong adaptability with methanol transportation and filling functions.

[0024] (2) Methanol filling function with fuel filling function

[0025] The ship is provided with a fuel tank at the bow to provide the receiving ship with combustion fuel filling function, avoiding the receiving ship to perform secondary filling, saving the filling time and cost.

[0026] (3) Self-reliance berthing and unberthing function without tugboat assistance

[0027] The ship is provided with a side thrust at the bow and a rudder propeller at the stern, and through the configuration of the DP system on the ship, DP2 redundancy can be achieved to realize self-reliance berthing and unberthing without tugboat assistance, reducing the dependence on tugboats.

[0028] (4) Adjustable height loading and unloading and filling station

[0029] The methanol transportation and filling ship has a height-adjustable loading and unloading and filling station in the middle and a filling station at the bow, which has a height-adjustable function using hydraulic lifting devices to adapt to different receiving ship types or wharves, and to meet the height compatibility of the transmission pipeline when two ships are berthed or berthed with the wharf.

[0030] (5) The berthing ball retraction device can make the berthing ball hover at any position from the two ship sides to the waterline, ensuring safe buffering of the two ships, and the retraction device has a wave compensation function to keep the berthing ball relatively stable when the two ships move relative to each other, avoiding rolling and reducing stress, improving operation safety, so that the methanol transportation and filling ship can perform filling operations with various receiving ships.

[0031] (6) The telescopic saddle is composed of an upper sliding hose support and a lower base, and the base is fixed on the deck by four bolts. During operation, the upper sliding hose support and the lower base slide relative to each other through rollers. When the U-shaped bend bracket is completely moved to the outside of the side, it is fixed by a limit pin. When not filling, the upper sliding hose support is completely moved to the inside of the side through the rollers. In this way, the U-shaped bend bracket is not exposed outside the side during navigation, which affects the safety of navigation. Instead of moving the saddle to the inside of the side by crane, the labor intensity of the filling ship operators is reduced.

[0032] (7) Multi-point arrangement and suspension device of the ball, when the ball retraction device fails, the eye plate suspending the ball is arranged on the deck, so that the ball can have 4-8 suspension positions on each side, the suspension strength is at least 20t per eye plate, which meets the squeezing friction force of the ball when the two ships approach, so that there is always a ball arrangement that can meet the required arrangement number when the two ships are berthed, and the methanol transport and filling ship can be filled with various filling ships.

[0033] The filling ship has the functions of methanol transportation and methanol filling; methanol and fuel are filled at the same time during filling; no tugboat assistance is required during methanol filling, and the power positioning capacity is relied on to have the ability to approach and leave the berth by self-force; the demand for different filling interface height differences is met, different height difference filling ships can be filled by adjusting the height of the filling platform, and the operation capacity is expanded; a quick ball retraction device is designed, which can make the ball hover at any position from the two ship side top plate to the waterline, maintain a safe buffer distance between the two ships in the transverse direction, and the ball retraction device has wave compensation function to optimally reduce the stress of the retraction device; a set of ball suspension eye plate and its arrangement method are proposed, which can make the buffer ball arrangement number meet the operation requirements when the two ships are berthed, and expand the range of operation ship types. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0035] Figure 1 It is a side view of a double-layer filling station of a methanol filling ship.

[0036] Figure 2 It is an upper deck plan view of a double-layer filling station of a methanol filling ship.

[0037] Figure 3 It is a cabin plan view of a double-layer filling station of a methanol filling ship.

[0038] Figure 4 It is a side view of a ship center loading-unloading-filling platform.

[0039] Figure 5 It is a plan view of a ship center loading-unloading-filling platform.

[0040] Figure 6 It is a side view of a ship bow filling platform.

[0041] Figure 7 It is a plan view of a ship bow filling platform.

[0042] Figure 8 is the working schematic diagram of liquid cargo loading and unloading / filling.

[0043] Figure 9 is the schematic diagram of movable saddle during operation.

[0044] Figure 10 is the schematic diagram of movable saddle during non-operation.

[0045] Figure 11 is the schematic diagram of ball-relying retraction device.

[0046] Figure 12 is a structural schematic diagram of multi-point suspension device.

[0047] Figure 13 is a structural schematic diagram of multi-point suspension device.

[0048] Figure 14 is a schematic diagram of static calculation of ball-relying suspension tension.

[0049] In the figure: 1, bow peak cabin, 2, bow ballast cabin, 3, emergency fire pump cabin, 4, fuel and methanol liquid cargo cabin, 5, liquid cargo cabin, 6, ballast cabin, 7, methanol fuel storage cabin, 8, daily methanol cabin, 9, methanol fuel preparation room, 10, waste liquid cabin, 11, shaft generator, 12, hydraulic hose hanger, 13, midship loading and filling platform, 1301, midship deck, 1302, midship loading and filling platform lifting device, 1303, midship low loading and filling station, 1304, midship high loading and filling station, 14, bow filling platform, 1401, bow deck, 1402, bow filling platform lifting device, 1403, bow low filling station, 1404, bow high filling station, 15, inverted arm type main fender, 16, ball-relying retraction device, 1601, retraction hanger, 1602, retraction cable, 1603, ball, 1604, automatic control system, 17, multi-point suspension device, 1701, eye plate, 1702, anchor chain, 1703, eye ring, 18, extendable saddle, 1801, base, 1802, sliding hose support, 1803, U-shaped bending bracket, 1804, filling hose, 1805, limiting pin. DETAILED DESCRIPTION

[0050] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0051] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is merely illustrative in nature and not intended to limit the present application and its applications or uses in any way. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0052] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0053] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0054] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0055] Figures 1 to 3 The overall scheme of the ship is shown: the ship is a 12000m 3Liquid cargo of II chemical product oil tanker (including a pair of fuel and methanol tank in the bow, can load 2000m³ fuel or methanol and four pairs of methanol liquid cargo tank, single tank capacity 2500m³, a total of 10000m³ of methanol. Can load 2000m³ fuel and 10000m³ methanol or 12000m³ methanol), suitable for unlimited navigation area navigation of methanol transport, filling ship, mainly in the coastal areas of China and Southeast Asia and other regions. It has the ability to transport and ship to ship and ship to shore filling, loading and unloading. Can be in the anchorage or port for green methanol fuel filling operation. Meet the requirements of international, domestic and other relevant conventions, specifications and circulars.

[0056] The propulsion system of the ship adopts a medium-speed 4-stroke methanol dual-fuel main engine driven by a reduction gear box and shaft system to drive the adjustable pitch propeller, and is equipped with an 11 shaft generator.

[0057] The bow of the ship is equipped with a side thrust, and the stern is equipped with a rudder propeller. Through the configuration of DP system on the ship, DP2 redundancy can be achieved, and self-reliance berthing and unberthing without tug assistance can be realized.

[0058] The ship is designed according to the characteristics of II chemical tanker, and the inner surface of the cargo tank is specially coated with paint. It is suitable for loading and transporting II and III chemical products with flash point less than 60°C, and can also transport product oil. All goods should meet the characteristics of ship outfitting, system and coating materials; and should meet the requirements of ship notation and technical specification, and should not be harmful to the whole cargo oil system.

[0059] The loading process of the cargo tank is completed by the loading equipment on the shore, and the unloading and filling process is completed by two cargo pumps.

[0060] The ship has a vertical invisible bulb bow and a square stern.

[0061] There are 6 pairs of liquid cargo tanks (including a pair of contaminated liquid tanks) and a pair of methanol fuel tanks on the ship, and the cargo tank area is double-hulled and double-bottom structure.

[0062] The ship reduces pollution or damage to the ocean, land and atmosphere environment, improves the energy efficiency of the ship, and realizes the function of green ship. Combined with design measures and effective operation control, the ship can reduce energy consumption under the same business benefit.

[0063] The ship has a single continuous deck, and the entire living quarters and engine room including the bridge are located in the stern.

[0064] The main hull is divided into 11 compartments by 10 transverse bulkheads below the upper deck. From the bow to the stern, there are:

[0065] 1) bow sharp tank 1, ballast tank 2, emergency fire pump tank 3, etc.

[0066] 2) The cargo hold area is a double hull and double bottom. The double hull area on the sides and the double bottom area at the bottom are 6 pairs of ballast tanks. The middle section is a liquid cargo tank, which is divided into 5 pairs of cargo tanks (one pair of fuel oil tanks that also serve as methanol liquid cargo tanks 4 and 4 pairs of methanol liquid cargo tanks 4), one pair of sludge tanks 10 and one pair of methanol fuel storage tanks 7 by 5 watertight transverse bulkheads and 1 mid-longitudinal bulkhead.

[0067] 3) The engine room is equipped with a methanol fuel preparation room 9, a methanol daily use room 8, and a methanol dye storage room 7.

[0068] 4) The engine room is located behind the cargo hold. Various necessary oil tanks are installed in the engine room, and liquid tanks or empty tanks are installed under the double-layered structure below the engine room.

[0069] 5) One midship loading / unloading / bundling platform 13 and one bow bunkering platform 14 are located on the upper deck, one amidships and one bow. The midships bunkering station includes cargo and fuel bunkering pipes, while the bow bunkering station is only for external bunkering of methanol fuel. In accordance with OCIMF standards, the bunkering stations are equipped with sump tanks and mooring facilities. (Midships high / low position)

[0070] 6) The hull structure design should meet the CCS standard Class B ice zone reinforcement requirements and be able to operate in floating ice areas such as the Bohai Bay in winter.

[0071] 7) Install two hydraulic hoses, 12, with a rated load of 5t×25m, in the middle of the upper deck and near the forward manifold / filling station.

[0072] 8) The hydraulic hose crane 12 shall meet the explosion-proof requirements and be used for lifting liquid cargo hoses.

[0073] 9) This vessel is equipped with 3 pairs of inverted boom main fenders, each measuring 5m x 2.5m, which are respectively arranged on the upper deck at both ends and the middle of the parallel midship for ship-to-ship berthing and barge operations. The fenders are recovered by a release / recovery device, which shares a single hydraulic pump station.

[0074] 10) The vessel is equipped with a floating auxiliary fender on each of the port and starboard sides of Deck A and the upper deck, with a specification of 3m*1.5m, to protect the bow and stern of the hull from collision.

[0075] 11) This vessel is equipped with a shaft-driven generator (PTO). The shaft-driven generator (PTO) can supply power to the entire vessel during normal navigation driven by the main engine, thereby optimizing the vessel's energy consumption and reducing the need for generators.

[0076] The main equipment for refueling this vessel includes:

[0077] Methanol fuel supply system: methanol delivery pump draws methanol from methanol fuel storage tank 7 (arranged between cargo pump room and liquid cargo tank) to methanol daily tank 8 (arranged on top of cargo pump room), and methanol in methanol daily tank 8 can also be discharged through methanol delivery pump and liquid cargo loading manifold. Methanol fuel in methanol daily tank 8 is delivered to main engine and auxiliary engine in engine room through methanol supply unit (LFSS) and control valve unit (FVT).

[0078] Figures 4 to 8 Liquid cargo loading and unloading and filling system is shown: the ship has 5 pairs of liquid cargo tanks 5, 1 pair of contaminated liquid tanks 10, 1 pair of methanol fuel storage tanks 7, and 1 methanol daily tank 8. The maximum design loading and unloading rate is ~1200m 3 / h. The liquid cargo system valve accessories are made of stainless steel 316L, and the valves used in the liquid cargo tank and the contaminated liquid tank can be remotely operated in the cargo control room. The central and bow of the upper deck are provided with a midship loading-unloading-filling platform 13 and a bow filling platform 14, and hydraulic hose cranes 12 matched with them; the midship loading-unloading-filling platform 13 is arranged above the liquid cargo tank 5, and the bow filling platform 14 is arranged above the fuel and methanol liquid cargo tank 4; the midship loading-unloading-filling platform 13 is arranged on the midship deck 1301, and the midship low-position loading-unloading-filling station 1303 and the midship high-position loading-unloading-filling station 1304 are arranged through the midship loading-unloading-filling platform lifting device 1302 respectively; the bow filling platform 14 is arranged on the bow deck 1301, and the bow low-position filling station 1403 and the bow high-position filling station 1404 are arranged through the bow filling station platform lifting device 1402 respectively.

[0079] Figure 9 and Figure 10 The retractable saddle 18 is shown, which includes a base 1801 fixed on the deck and a sliding hose support 1802, and a U-shaped bending bracket 1803 for supporting the filling hose 1804 is arranged at the front end of the sliding hose support 1802.

[0080] Rollers are arranged between the sliding hose support 1802 and the base 1801, and the sliding hose support 1802 slides relative to the base 1801. When working (as shown in Figure 9 ), the sliding hose support 1802 slides outward to the ship side, so that the U-shaped bending bracket 1803 moves completely to the ship side, and the sliding hose support 1802 is fixed to the base 1801 by a limiting pin 1805. When not working (as shown in Figure 10 ), the sliding hose support 1802 slides inward to the ship side, so that the U-shaped bending bracket 1803 moves completely to the ship side, and the sliding hose support 1802 is fixed to the base 1801 by a limiting pin 1805.

[0081] The left and right sides of the ship are each provided with two liquid cargo loading and unloading platforms which also serve as filling platforms. The height of the platforms can be adjusted between the highest position and the lowest position, and the height can be matched according to the height of the filling ship or the wharf. The upper part of the platform is provided with methanol loading and unloading / filling pipes. Due to the wharf loading and unloading function, the pipe diameter is slightly larger, generally 10" to 16", including liquid cargo filling pipes, vapor recovery pipes, cleaning pipes, fuel filling pipes, and auxiliary nitrogen and fresh water pipes, which can simultaneously load and unload / fill methanol and fuel. The left and right sides of the bow of the ship are each provided with a dedicated filling station. The liquid cargo loading and unloading manifold, the height of the filling manifold from the deck, and the different diameter joints are in accordance with the relevant provisions of OCIMF. According to the characteristics of the bow dedicated filling, the manifold here is not used for loading and unloading a large amount of methanol cargo, so the cleaning pipe is not provided, and the filling pipe diameter is appropriately reduced to 6" or 8". The filling pipe is two liquids and one gas, arranged in L-V-L, and an additional fuel filling pipe is provided.

[0082] The ship is equipped with a hose-based ship-to-ship filling system, which uses a liquid cargo pump to fill methanol. The maximum filling rate of each filling manifold is 600m³ / h, and the maximum filling rate of the whole ship is 1200m³ / h. The complete filling system includes liquid phase hoses (for liquid phase methanol filling and fuel filling), gas phase hoses (for gas phase methanol reflux), emergency release devices (ERC for near-term release during filling), quick couplings (QCDC for quick connection of hoses and filling manifolds), fall protection systems (to protect hoses and ship bodies), hydraulic power units (HPU to provide hydraulic power), vessel distance measurement systems (VSD to monitor the distance between two ships), electrical control systems, and other related components and accessories, all of which are prior art.

[0083] Figure 11 The ball-relying launching and recovering device is shown: the launching and recovering device 16 in the ball-relying launching and recovering device 16 is provided with a cable 1602 for launching and recovering the hanger 1601, and the bottom of the cable 1602 is provided with a ball 1603; the ball 1603 is controlled at any height between the side water surface and the side top strake. The ball-relying launching and recovering device 16 further includes an automatic control system 1604 for controlling the retraction, release and wave compensation of the cable 1602; the automatic control system 1604 is provided with upper and lower threshold values of the cable tension during wave compensation; when the automatic control system 1604 monitors that the cable tension 1602 exceeds the upper threshold value, the cable 1602 is controlled to be released, so that the cable tension 1602 is between the upper and lower threshold values; when the automatic control system 1604 monitors that the cable tension 1602 is lower than the lower threshold value, the cable 1602 is controlled to be tightened, so that the cable tension 1602 is between the upper and lower threshold values.

[0084] Currently, the ball is retracted and released by the personnel on the ship and the crane, and the personnel need to participate in the process, which is time-consuming and laborious, and has safety hazards. At the same time, for a large number of passenger-rolling ships and other V-shaped ship bodies, the ball cannot be suspended at the required working position (the current ball is floating on the water surface), and cannot prevent the collision of ships. At present, the LNG / methanol / liquid ammonia and other new energy power ship fuel filling generally adopts the side-by-side method. In order to prevent the ship from colliding due to sea wave, a ball needs to be set between the power ship and the filling ship. The ball is floating on the water surface between the two ships, and the buffer capacity of the ball is used to achieve a safe buffer distance between the ships to prevent collision. For a large number of passenger-rolling ships and other V-shaped ship bodies, when the ball is released, the ball is below the V-shaped body, and cannot prevent the collision of ships. The ball retraction device of the ship can quickly retract and release and suspend the ball, solve the filling demand of PCTC and other V-shaped ships, achieve quick ball retraction and release, suspend the ball, and the ball retraction device has wave compensation function, which can optimally reduce the stress of the retraction device, reduce the filling time, increase the safety of filling, reduce the filling cost, and expand the filling service object and increase the filling market of passenger-rolling ships and other ships.

[0085] The ball retraction device of the project sets a set of ball retraction device automatic control system, ball retraction device hanger, and hoisting and releasing cable at the end of the ball retraction device. When the ball is hoisted and released, the hook at the end of the cable hooks the ball. Through the folding of the ball retraction device hanger at a certain angle, the hanger can be laid down to the side of the sea. At this time, through the ball retraction device automatic control system, the cable can be retracted and released, and the ball can be controlled at any height from the side of the water to the top of the plate. After the control height is input, the ball is automatically retracted and released to the target position. During operation, according to the friction and gravity of the ball and the influence of dynamic force, the cable can be automatically adjusted, so that the stress on the cable does not exceed the set value, and the control mode is electric hydraulic.

[0086] Figures 12 to 13The ball 1603 is suspended by the anchor chain 1702 tied to the eye plate 1701 or eye ring 1703 on the deck, and 4-8 eye plates 1701 or eye rings 1703 are arranged on each side. Currently, the refueling ship and the receiving ship are generally thrown into the water when they are in the refueling operation, and then the anchor chain or steel wire rope is tied to the eye ring on the deck. At this time, the ball floats on the water surface, and the anchor chain or steel wire rope only prevents the ball from drifting away and is not subjected to too much force, so the eye ring on the deck is generally safe in about 5t of working load, and the ball is fixed in two eye rings on the deck through both sides. However, for V-shaped receiving ships or when two ships are berthed, the ball is difficult to float on the water surface and simultaneously lean against the parallel middle body of the two ships, which may cause the ball to be squeezed into the bilge below the ship, thereby failing to play a safe buffering role. Based on this, several reinforced eye plates are arranged on the deck, and for the three balls shown in the figure on each side, it is not limited to only three ball tying positions, but several eye plates are evenly distributed along each side, so that each adjacent two eye plates can realize the function of tying the ball, and the eye plate is reinforced, and at least a single eye plate can withstand a force of more than 20t. The specific calculation method can be referred to the schematic diagram Figure 14 At this time, the eye plate can ensure that the ball can be suspended and withstand the tension on the suspension rope when the two ships are berthed, so that the refueling ship can be berthed and moored with various types of receiving ships.

[0087] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-functional methanol carrier tanker, characterized by: The cabin under the upper deck from the bow to the stern comprises a bow area, a cargo hold area, a front engine room area and an engine room, the bow area comprises a bow peak cabin (1), a bow ballast cabin (2), an emergency fire pump cabin (3), the cargo hold area is double-hulled and double-bottomed, the side double-hulled area and the bottom double-bottom area are six pairs of ballast cabins (6), the cargo hold area comprises one pair of fuel and methanol liquid cargo holds (4), four pairs of liquid cargo holds (5), one pair of dirty liquid cargo holds (10) and one pair of methanol fuel storage cabins (7); the front engine room area is provided with a methanol daily use cabin (8) and a methanol fuel preparation room (9); the engine room is provided with main engines and auxiliary engines; The middle and bow of the upper deck are provided with a midship loading-unloading-filling platform (13) and a bow filling platform (14), and hydraulic hose cranes (12) matched with the two platforms; the midship loading-unloading-filling platform (13) is arranged above the liquid cargo holds (5), and the bow filling platform (14) is arranged above the fuel and methanol liquid cargo holds (4); the midship loading-unloading-filling platform (13) is arranged on a midship deck (1301) and is provided with a midship low loading-unloading-filling station (1303) and a midship high loading-unloading-filling station (1304) through midship loading-unloading-filling platform lifting devices (1302); the bow filling platform (14) is arranged on a bow deck (1301) and is provided with a bow low filling station (1403) and a bow high filling station (1404) through bow filling station platform lifting devices (1402); The loading-unloading-filling platform (13) and the bow filling platform (14) further comprise telescopic saddles (18), the telescopic saddles (18) comprise bases (1801) fixed on the deck and sliding hose supports (1802), and the sliding hose supports (1802) are provided with U-shaped bending supports (1803) for supporting filling hoses (1804) at the front ends of the sliding hose supports (1802); Rollers are arranged between the sliding hose supports (1802) and the bases (1801), the sliding hose supports (1802) slide relative to the bases (1801), the sliding hose supports (1802) slide outwardly to the ship sides during operation, the U-shaped bending supports (1803) are completely moved outwardly to the ship sides, the sliding hose supports (1802) are fixed to the bases (1801) by limiting pins (1805), and the sliding hose supports (1802) slide inwardly to the ship sides during non-operation, the U-shaped bending supports (1803) are completely moved inwardly to the ship sides, and the sliding hose supports (1802) are fixed to the bases (1801) by the limiting pins (1805). The bunkering ship is also provided with a fender retraction device (16), the fender retraction device (16) is provided with a retraction cable (1602) arranged in a retraction hanger (1601), and the bottom of the retraction cable (1602) is provided with a fender (1603); the fender retraction device (16) further comprises an automatic control system (1604) for controlling the retraction of the retraction cable (1602), the automatic control system (1604) is provided with upper and lower thresholds of the retraction cable tension during wave compensation; when the automatic control system (1604) monitors that the retraction cable (1602) tension exceeds the upper threshold, the automatic control system (1604) controls the retraction cable (1602) to be loosened, so that the retraction cable (1602) tension is between the upper threshold and the lower threshold; when the automatic control system (1604) monitors that the retraction cable (1602) tension is lower than the lower threshold, the automatic control system (1604) controls the retraction cable (1602) to be tightened, so that the retraction cable (1602) tension is between the upper threshold and the lower threshold; the fender (1603) is controlled at any height between the side water surface and the side top plate.

2. A multi-functional methanol carrier according to claim 1, characterized in that: The loading-unloading and bunkering platform (13) and the bow bunkering platform (14) further comprise an emergency disengagement device, a quick coupling, a fall arrest system, a ship ranging system and an electrical control system.

3. A multi-functional methanol carrier according to claim 2, characterized in that: The low loading-unloading and bunkering station (1303) and the midship high loading-unloading and bunkering station (1304) comprise a liquid cargo filling pipe, a vapor recovery pipe, a sweeping pipe, a fuel filling pipe, and auxiliary nitrogen and fresh water pipelines.

4. A multi-functional methanol carrier according to claim 2, characterized in that: The bow low bunkering station (1403) and the bow high bunkering station (1404) comprise a liquid cargo filling pipe, a vapor recovery pipe, a fuel filling pipe, and auxiliary nitrogen and fresh water pipelines.

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