KR20240032109A - Ammonia fuel transport and injection lines - Google Patents

Abstract

The ammonia fuel transportation and injection ship includes a hull (1), a plurality of independent docks fixed to the hull (1), a liquid cargo header pipe (2) and an injection header pipe (3) connected to each independent dock, and a gas detection station comprising a leak treatment device mounted next to the liquid cargo header pipe (2) and the injection header pipe (3), the leak treatment device being mounted next to the liquid cargo header pipe (2) and the injection header pipe (3); (4) and a washing tower (5) mounted on the hull (1), and the washing range of the washing tower (5) covers the liquid cargo header pipe (2) and the injection header pipe (3). The vessel may reduce the risk of ammonia poisoning of humans due to leakage of ammonia fuel.

Description

Ammonia fuel transport and injection lines

The present invention relates to the field of marine eco-friendly energy transportation and injection equipment, and particularly to ammonia fuel transportation and injection ships.

As science and technology advance, industrialization is becoming more and more rapid, but the greenhouse gas effect is becoming more and more evident due to excessive emissions of carbon dioxide. In order to achieve the ambitious goal of reducing total greenhouse gas emissions by at least 50% by 2050 compared to 2008, the use of low-carbon or zero-carbon fuels is very necessary. Ammonia fuel, hydrogen fuel, nuclear energy, etc. are considered to be one of the most representative zero-carbon energy sources in the future shipping industry. Among them, ammonia fuel has low transportation costs and high safety, so ammonia fuel has been commercialized and utilized on a large scale within the past 10 years. It is expected that it can be implemented more easily.

Compared to hydrogen gas, ammonia gas has the following advantages:

1. Ammonia fuel has the characteristics of being easy to transport, and its transport temperature is lower than -34.5 degrees Celsius, so it can be stored in liquefied form. Additionally, in a room temperature environment, the liquefied storage state can be reached even under constant pressure conditions (8-10 bar).

2. Ammonia fuel has greater energy density. Based on equivalent ship speed requirements, the tank capacity required for ammonia fuel is essentially three-fifths of that for hydrogen fuel. Therefore, it can be advantageous for the arrangement of ships.

3. The storage properties of ammonia fuel allow for good storage in various types of independent liquid tanks. At the same time, because anhydrous ammonia has an extremely small flashpoint range, the explosion hazard is generally recognized as very low.

However, ammonia gas itself is colorless, transparent, toxic, and has a very active molecular structure, so even if a leak occurs during the transportation and storage of ammonia fuel, it is not easy to detect, and it is toxic, causing irreversible damage to the human body. Because of this, the International Convention on Bulk Liquefied Gas Ships places very strict restrictions on the carriage of ammonia, and consideration must be given to minimizing the risk of human poisoning from ammonia leakage. Due to these shortcomings, ammonia fuel is currently not widely used. It is not universally used.

At the same time, order-taking ships (large container ships, bulk carriers, oil tankers, etc.) are also currently facing the problem of limited resource conditions at target ports, and require faster and shorter port stay times or even rapid transfer at sea. In order to achieve the purpose, an ammonia transport and injection ship was invented that can solve the problem of rapid and safe transportation and injection of ammonia fuel in ships.

Considering the shortcomings of the prior art, the purpose of the present invention is to provide an ammonia fuel transportation and injection line to solve the problems of human poisoning and safe transportation and injection of ammonia fuel caused by difficulties in detecting ammonia gas leaks in the prior art. I want to do it.

In order to implement the above objects and other related objects, the present invention provides an ammonia fuel transportation and injection vessel, comprising a hull, a plurality of independent holds fixed to the hull, a liquid cargo header pipe and an injection header pipe connected to each independent hold, and a leak treatment device mounted next to the liquid cargo header pipe and the injection header pipe in each independent hold, wherein the leak treatment device includes a gas detection station mounted next to the liquid cargo header pipe and the injection header pipe, and mounted on the hull. It includes a washing tower, and the washing range of the washing tower covers the liquid cargo header pipe and the injection header pipe.

Preferably, the leak treatment device further includes a receiving tray installed below the injection header pipe and a central dock installed below the liquid cargo header pipe and the injection header pipe, and the central dock is installed on the hull below the receiving tray. , the central hold has an opening on the side; In addition, the receiving tray is installed in a two-layer structure, the upper layer structure is a mesh stainless steel layer, the lower layer is a solid stainless steel layer, an isolation water layer is installed between the upper and lower two layers, and the lower part of the receiving tray is a pipeline. It is connected to the central dock through.

Preferably, a fuel self-supply dock and a fuel power room for driving the hull are further installed in the hull, an ammonia fuel main engine is installed in the fuel power room, and a space between the fuel self-supply dock and a plurality of independent docks is provided. each is connected through a first gas direction pipe, a stress valve is installed in each first gas direction pipeline, and the fuel self-supply dock and any one independent dock are connected through a first liquid direction pipeline; , the fuel self-supply dock and the ammonia fuel main engine constitute a loop connection through the second liquid direction pipeline and the second gas direction pipeline, and both the first liquid direction pipeline and the second liquid direction pipeline are emergency. An isolation valve is installed.

Preferably, both the second liquid direction pipeline and the second gas direction pipeline are double-walled pipes, and the double-walled pipe includes an outer pipe, an inner pipe installed through the outer pipe, and a pipe gap formed between the outer pipe and the inner pipe; , the inner pipe of the second liquid direction pipeline is for injecting liquid ammonia, the inner pipe of the second gas direction pipeline is for sending ammonia gas, and the pipe gap of the second liquid direction pipeline and the second All pipe gaps in the gas direction pipeline are for compressed air to flow, the flow direction of compressed air in the second liquid direction pipeline is opposite to the liquid ammonia injection direction, and the flow of compressed air in the second gas direction pipeline is The direction is opposite to the delivery direction of ammonia gas.

Preferably, the self-fueling dock includes an inner shell and a bottom structure installed at the bottom of the self-fueling dock, and an insulating layer is installed on the outer surface of the inner shell. In addition, another structure of the self-fueling dock includes an inner shell, an outer shell surrounding the inner shell, and a bottom structure installed on the bottom of the self-fueling dock, and an insulating layer is installed on the inner surface of the outer shell. The bottom structure is a double bottom structure, and can effectively resist vibration generated when the ammonia fuel main engine installed in the fuel power room is operating.

Preferably, a compressor room and a ventilation tower are further installed in the hull, the compressor room is connected to a first gas direction pipeline, a pressure sensing device is installed in the first gas direction pipeline, and the ventilation tower is an independent dock. is connected to

Preferably, a fence is fixed to the hull, a fender is disposed on the fence, and the fender includes a center floating ball, a tire pad installed on the outer wall of the center floating ball, a center lock installed on both ends of the center floating ball, and a center lock. and a chain connecting the center of the tire pad; Both ends of the fender are spherical, and the middle is cylindrical. The inside of the central floating ball must maintain a certain pressure; Tire pads are intended to ensure appropriate elastic deformation.

Preferably, a mooring dock is installed at the bow of the hull, a storage battery room is installed at the stern of the hull, and side thruster chambers are installed at both the side walls of the bow and the stern of the hull. A personnel accommodation dock is installed at the bow of the hull, and the leakage treatment device further includes a plurality of emergency shower rooms, and the emergency shower rooms are installed at the top of each independent dock.

Preferably, a center line bulkhead is installed inside the independent wharf, and the center line bulkhead is installed on the center line from the head to the stern to separate the independent wharf.

As mentioned above, the ammonia fuel transport and injection line of the present invention has the following beneficial effects:

The present invention provides a plurality of independent wharves for storing and transporting ammonia fuel, and at the same time, the liquid cargo header pipe and injection header pipe installed in the independent wharf facilitate the storage and injection of ammonia fuel into a gas vessel; After a leak treatment device is installed and an ammonia fuel leak occurs, the leaked ammonia fuel can be quickly treated through the leak treatment device, thereby reducing the risk of poisoning to the human body from ammonia fuel leak.

Figure 1 is an explanatory diagram of the independent dock type A and type B of the ammonia fuel transportation and injection ship of the present invention.
Figure 2 is a right side view of the independent dock type A and type B of the ammonia fuel transportation and injection ship of the present invention.
Figure 3 is a structural diagram of the fuel self-supply dock type A1 and type B1 of the ammonia fuel transportation and injection ship of the present invention.
Figure 4 is a plan view of the bottom structure of the ammonia fuel transportation and injection line of the present invention.
Figure 5 is a structural diagram of the fuel self-supply dock type C1 of the ammonia fuel transportation and injection ship of the present invention.
Figure 6 is a plan view of the fender of the ammonia fuel transport and injection line of the present invention.
Figure 7 is a left side view of the fender of the ammonia fuel transport and injection line of the present invention.
Figure 8 is a flow chart of the fuel self-supply dock and ammonia fuel main engine of the ammonia fuel transportation and injection ship of the present invention.
Figure 9 is a structural diagram of the independent hold type C of the ammonia fuel transportation and injection ship of the present invention.
Figure 10 is a right side view of the independent hold type C of the ammonia fuel transportation and injection ship of the present invention.

Hereinafter, the implementation method of the present invention will be described through specific specific examples, and those who are familiar with the present technology will be able to easily understand other advantages and effects of the present invention through the contents disclosed herein.

See Figures 1 to 10. It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings of this specification are merely tailored to the content disclosed in the specification so that those familiar with the present technology can understand and read them, and limit the conditions under which the present invention can be practiced. Since it is not intended to do so, it has no practical technical significance, and unless changes in the structure's formula, ratio relationships, etc. or adjustments in size do not affect the effects that the present invention can produce and the purposes that can be achieved, The technical content disclosed by the present invention must be included within a comprehensive scope. In addition, terms such as “top,” “bottom,” “left,” “right,” “middle,” and “one” used in the present invention are only for clarity of description and do not define the scope of practice of the present invention. It is not intended to be limiting, and as long as there is no substantial change in technical content, changes or adjustments in relative relationships should also be considered within the scope of the present invention.

As shown in FIGS. 1, 2, 9, and 10, the present invention provides an ammonia fuel transport and injection line, which includes a hull (1), a plurality of independent docks fixed to the hull (1), and each independent a liquid cargo header pipe (2) and an injection pipe (3) connected to a hold, and a leak treatment device mounted next to the liquid cargo header pipe (2) and injection pipe (3) at each independent hold, the leak treatment device comprises a gas detection station (4) mounted next to the liquid cargo header pipe (2) and the injection pipe (3), and a washing tower (5) mounted on the hull (1), the washing range of the washing tower (5) covers the liquid cargo header pipe (2) and injection pipe (3). In this embodiment, there are three independent docks, sequentially from the front to the stern: the first independent dock (101), the second independent dock (102), and the third independent dock (103), and the independent docks are dry. It can be divided into model and spherical column type, and each independent dock is located in the structure of the hull (1) through supports. Among them, the diamond-shaped independent hold includes types A and B, as shown in Figures 1 and 2, and the design pressure of the diamond-shaped independent hold is less than 0.7 bar; The spherical-cylindrical independent hold includes a C type as shown in Figures 9 and 10, and the design pressure of the spherical-cylindrical independent hold exceeds 0.7 bar, so it can withstand a larger cabin pressure. The ammonia fuel transport and injection line has both transport and injection functions simultaneously through a liquid cargo header pipe (2) and an injection pipe (3) on each independent hold.

Preferably, as shown in FIGS. 1 and 9, the liquid cargo header pipe 2 on the second independent hold 102 in the center of the hull 1 is installed as a VLLVVL liquid cargo header pipe or an LVVLLV liquid cargo header pipe. The liquid cargo header pipe (2) simultaneously satisfies two liquid cargo injection methods, VLLV or LVVL, and is mainly used for injection of ammonia raw materials into the main ship hull (1) upstream of the port, and conversely, for ship-to-ship injection. Ammonia fuel injection can also be implemented. The injection header pipe (3) is equipped with two liquid direction pipes and two gas direction pipes; Here, L represents the liquid direction header pipe, and V represents the gas direction header pipe.

In addition, a specialized ship-to-ship ammonia fuel injection pipeline is further installed in the bow and stern areas of the hull 1 to meet the injection requirements of ships with different main specifications:

When adopting the one-to-one injection operation, if the storage tank of the order ship is placed in the bow, the injection ship and the order ship dock bow to bow and perform the injection operation using the first independent dock 101; When the storage window of the order ship is located in the center, the injection ship and the order ship are berthed so that the bow is arranged side by side, and injection work is performed using the second independent dock (102); When the storage ship of the order ship is located at the stern, the injection ship and the order ship are anchored bow to stern and perform injection work using the first independent wharf 101.

When adopting a 1-to-2 injection operation, the injection ship and the first order ship dock bow-to-bow and perform injection work using the first independent dock (101), and the injection ship and the second order ship dock stern-to-stern. Therefore, simultaneous injection demand for two ships can be realized by performing bunkering work using the third independent dock 103.

The three independent docks in the present invention are for storing and transporting ammonia fuel, and the liquid cargo header pipe (2) and injection header pipe (3) on each independent dock store ammonia fuel from the outside and inject it toward the ship. It is easy to perform. The installed gas detection station 4 is for detecting the ammonia content in the air, and the alarm value of the ammonia content is set to an ammonia volume concentration of 20-50 ppm (parts per million concentration). When the ammonia content exceeds the standard, the washing tower (5) releases and sprays water, and by using the principle that ammonia gas easily dissolves in water, the air content of ammonia gas is reduced, so that the human body inhales ammonia gas and becomes poisoned. prevent it from happening.

In addition, as shown in FIGS. 1, 2, 9, and 10, the leak treatment device includes a receiving tray (6) installed below the injection header pipe (3), a liquid cargo header pipe (2), and an injection header. It further includes a neutralization dock (7) installed below the pipe (3), the neutralization dock (7) is mounted on the hull (1) below the receiving tray (6), and the neutralization dock (7) is installed in the neutralization dock (7). An opening is provided on the side so that the ammonia water inside can be discharged to the outside of the side. Preferably, the receiving tray (6) is installed below the injection header pipe (3) so that when the liquid ammonia moves or leaks, it can receive and collect the leaked liquid ammonia. The receiving tray (6) has a two-layer structure, the upper structure is a mesh-type stainless steel layer, the lower layer is a solid stainless steel layer, an isolation water layer is installed between the upper and lower two layers, and the bottom of the receiving tray (6) is a pipe. It is connected to the neutral wharf (7) through a line. Preferably, the acidic substance is sprayed into the neutralization hold 7, and when the washing tower 5 releases water and sprays, the ammonia gas is dissolved in the water and passes through the protruding flat deck on the hull 1 to neutralize the hold 7. ) or the leaked liquid ammonia collected in the receiving tray (6) flows into the neutralization hold (7) through the pipe and reacts with the acidic substance in the neutralization hold (7) to produce ammonium salt, thereby causing ammonia poisoning of the human body. can be prevented.

In addition, as shown in FIGS. 1, 3, 4, and 8, a fuel self-supply dock 8 and a fuel power room 9 for driving the hull 1 are further installed in the hull 1. , an ammonia fuel main engine 10 is installed in the fuel power room 9, and the fuel self-supply dock 8 and the plurality of independent docks are each connected through a first gas direction pipeline 11, and each Stress valves 1101 are installed in all of the first gas direction pipelines 11, and the fuel self-supply dock 8 and any one independent dock are connected through the first liquid direction pipeline 12, A floor structure 804 is installed at the bottom of the self-supplied hold 8. Preferably, the bottom structure 804 is a double bottom structure, and can effectively resist vibration generated when the ammonia fuel main engine 10 installed in the fuel power room 9 is operated. The fuel self-supply dock 8 and the ammonia fuel main engine 10 form a loop connection through the second liquid direction pipeline 13 and the second gas direction pipeline 1301, and the first liquid direction pipeline ( An emergency isolation valve 1201 is installed in both 12) and the second liquid direction pipeline 13. Preferably, the fuel self-supply hold 8 is installed in the aft area of the hull 1, is connected to the third independent hold 103 through the first liquid direction pipeline 12, and is connected to the fuel power compartment 9. is installed in the lower part of the fuel self-supply hold (8). The material of the fuel self-supply hold 8 is low-temperature steel, stainless steel, aluminum alloy, high-manganese steel, etc., preferably low-temperature steel; Ammonia is corrosive and has relatively strong corrosion on carbon-manganese steel and nitel steel. More preferably, a small block can be divided directly below the gas chamber of the third independent dock (103) and used as a fuel self-supply dock (8), and there is no need to separately install the fuel self-supply dock (8), thereby saving money and materials. is saved. In addition, the emergency isolation valve 1201 is installed in the first liquid direction pipeline 12 and the second liquid direction pipeline 13, and when a liquid ammonia leak accident occurs, the emergency isolation valve 1201 automatically closes. This can prevent further leakage.

In addition, as shown in FIG. 8, both the second liquid direction pipeline 13 and the second gas direction pipeline 1301 are double-walled pipes, and the double-walled pipes have an exterior, an inner pipe installed through the exterior, and an exterior and It includes the tube gap formed between the inner tubes. The inner pipe of the second liquid direction pipeline 13 is for injecting liquid ammonia, the inner pipe of the second gas direction pipeline 1301 is for sending ammonia gas, and the compressed air pipeline 1302 is for compressed air. is injected into the pipe gap of the second liquid direction pipeline 13 and the pipe gap of the second gas direction pipeline 1301. The flow direction of compressed air in the second liquid direction pipeline 13 and the liquid ammonia injection direction are opposite, and the flow direction of compressed air in the second gas direction pipeline 1301 is opposite to the delivery direction of ammonia gas; If ammonia fuel leaks due to gaps or cracks in the inner pipes of the first liquid direction pipeline 12 and the second gas direction pipeline 1301, the compressed air flowing in the pipe gap can dilute the ammonia fuel. , can prevent ammonia concentration from reaching the flash point range of explosion.

Additionally, the self-fueling hold 8 may be type A1, type B1, or type C1. Here, as shown in FIG. 5, the C1-type fuel self-supply hold 8 includes an inner shell 801 and a bottom surface structure 804 at the bottom of the fuel self-supply hold 8, and the inner shell 801 ) An insulating layer 803 is installed on the surface. If the tank capacity of the fuel self-supply hold (8) is less than 5000 cubic meters, the inner shell (801) alone can withstand the pressure of liquid ammonia, and at the same time, the PU insulation layer (803) is installed on the surface of the inner shell (801). do. Additionally, a layer of thin iron plate may be attached to the outside of the PU insulating layer 803 to more reliably insulate the liquid ammonia. Preferably, as shown in Figure 3, the type A1 or type B1 self-fueling hold 8 has an inner shell 801, an outer shell 802 covering the inner shell 801, and a self-fueling hold 8. It includes a floor structure 804 installed on the bottom of the dock 8, and an insulating layer 803 is installed on the inner surface of the outer shell 802. If the tank capacity of the fuel self-supply hold (8) exceeds 5000 cubic meters, an outer shell (802) is installed to prevent leakage by relying on the outer shell (802) structure when the inner shell (801) structure loses its function. It must be able to transport liquid, and at the same time, a PU insulation layer 803 is installed on the inner surface of the outer shell 802 to keep the liquid ammonia cool. If the tank capacity of the fuel self-supply dock (8) is 5000 cubic meters, it can sail about 20,000 nautical miles by filling it up at once. Preferably, a passage for people to enter is further opened in the outer shell of the A1 type or B1 type fuel self-supply hold 8 so that leakage of ammonia fuel can be discovered in a timely manner by checking the condition of the inner shell 801. do.

In addition, as shown in FIGS. 1 and 9, a compressor room 21 and a ventilation tower 14 are further installed in the hull 1, and the compressor room 21 is connected to the first gas direction pipeline 11 and connected, a pressure sensing device is installed in the first gas direction pipeline 11, and the ventilation tower 14 is connected to an independent dock. Preferably, the fuel self-supply dock 8 and the plurality of independent docks are respectively connected through first gas direction pipelines 11, and the plurality of first gas direction pipelines 11 are one section of pipeline. The compressor room 21 is connected to the common pipeline of the plurality of first gas direction pipelines 11, and when the pressure in each independent hold exceeds the design value of the liquid tank, the stress valve 1101 is opened. Open, ammonia gas flows into the pressure sensing device in the first gas direction pipeline 11, whereupon the compressor in the compressor room 21 operates and operates the liquefaction system, thereby lowering the pressure in each independent hold. If a compressor fails and the liquefaction system cannot be operated, ammonia gas is released through the ventilation tower (14) to lower the pressure in each independent hold. In this embodiment, the number of ventilation towers 14 is one; In another embodiment, the quantity of ventilation towers 14 corresponds one by one to the quantity of independent docks. That is, one ventilation tower 14 may be placed independently in each independent dock.

In addition, as shown in FIGS. 6 and 7, a fence 1501 is fixed to the hull 1, a fender 15 is disposed on the fence 1501, and the fender 15 has a central floating ball 1502. , a tire pad 1503 installed on the outer wall of the center floating ball 1502, a center lock 1504 installed on both ends of the center floating ball 1502, and the center of the center lock 1504 and the tire pad 1503. It includes a chain 1505 that connects. Preferably, both ends of the fender 15 are spherical and the middle is cylindrical. The inside of the central floating ball 1502 must maintain a certain pressure, and the tire pad 1503 must ensure appropriate elastic deformation. Additionally, in this embodiment, the installed number of fenders 15 is four, and in the normal sailing process, the fenders 15 are placed on the fence 1501; When injecting into a ship, the fender 15 is placed on the sea surface between the injection line and the water column through a crane mechanism to alleviate the collision force between the injection line and the water column and meet the bunkering safety requirements of ammonia fuel between ships.

In addition, as shown in FIGS. 1 and 9, a mooring dock 16 is installed at the bow of the hull 1, a storage battery room 17 is installed at the stern of the hull 1, and the hull 1 ) Side thruster chambers (18) are installed on both the bow and stern side walls. The mooring dock (16) is intended to satisfy the mooring needs of the ship, and when the ship does not operate the main engine in the port, energy is supplied through the storage battery room (17) to maintain the power demand in the port; The side thruster chambers 18 ensure that the hull 1 has good handling performance.

In addition, as shown in FIGS. 1 and 9, a personnel living area 19 is installed at the bow of the hull 1, and the leakage treatment device further includes a plurality of emergency shower rooms 20. (20) is installed at the top of each independent dock. Preferably, the personnel living quarters (19) are located at the forefront of the ship and have the following effects: The first action is to ensure that the personnel living quarters and the ammonia fuel work zone are thoroughly separated, thereby greatly reducing the risk of ammonia poisoning. The second effect is that visibility control is good and blind spot shielding can be minimized (when the vessel is in a random operating state, the vessel's blind spots are all less than 1 times the length of the vessel); The third effect is that the space of the vast afterdeck surface can be utilized more fully. In addition, the outer shape of the personnel living area 19 is upwardly inclined at a 45 degree angle to reduce wind resistance. Preferably, devices such as an eye wash sink and a portable ammonia gas leak monitor are installed inside the emergency shower room 20, so that the volume concentration of ammonia in the air at the gas detection station 4 reaches 400 ppm per cubic meter. When detected, it operates automatically to quickly clean the contaminated ammonia gas.

In addition, in a situation where the hull 1 is provided with a protruding flat deck and the main scale frame of the hull 1 is limited, the first independent dock 101, the second independent dock 102, and the third independent dock 103 ) can increase the capacity. By installing a protruding flat deck at a higher position than the neutralization hold (7), when the main scale of the ship is constant, it is possible to break through the limitations of liquid tank capacity design and effectively expand the capacity of the liquid tank, while simultaneously reducing the weight of the liquefied gas ship. It can be ensured that the center does not change significantly. In addition, by providing the hull 1 with a protruding flat deck, the area of the deck surface is effectively extended, allowing more equipment, such as fenders 15, to be placed.

In addition, a center line bulkhead 104 is installed inside the independent dock, and the center line bulkhead 104 separates the independent dock on the center line from the head to the stern. As shown in Figures 2 and 10, the first independent hold 101 is divided into a left compartment of the first independent hold 101 and a right compartment of the first independent hold 101 by the center line bulkhead 104; The second independent dock 102 is divided into a left compartment of the second independent dock 102 and a right compartment of the second independent dock 102 by the center line bulkhead 104; The third independent dock 103 is divided into a left compartment of the third independent dock 103 and a right compartment of the third independent dock 103 by the center line bulkhead 104. The installed centerline bulkhead 104 can effectively reduce the effect of shaking of the independent dock on the structure of the hull (1). When a ship collides, only a single compartment (left or right compartment) is damaged, which can improve the stability of the ship.

The ammonia fuel transport and injection ship disclosed by the present invention is a first independent dock (101), a second independent dock (102), a third independent dock (103), and a fuel tank through the liquid cargo header pipe (2) before sailing. Ammonia fuel is injected into the supply dock (8), and the fuel self-supply dock (8) injects ammonia fuel into the ammonia fuel through the fuel supply pipe system, the first liquid direction pipeline (12) and the second gas direction pipeline (1301). Hereinafter, the method of implementing the present invention will be described through specific specific examples, and those who are familiar with the present technology will be able to easily understand other advantages and effects of the present invention through the contents disclosed herein.

1 to 10, it should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings of this specification are all tailored to the contents disclosed in the specification so that those familiar with the present technology can understand and read them. Since it is not intended to limit the conditions under which the invention can be implemented, it has no practical technical significance, and changes in the structure's formula, ratio relationships, etc. or adjustments in size do not affect the effects that the present invention can produce and the purposes that can be achieved. As long as it does not affect, all should be included within the scope of the technical content disclosed by the present invention. In addition, terms such as “top,” “bottom,” “left,” “right,” “middle,” and “one” used in the present invention are only for clarity of description and do not define the scope of practice of the present invention. It is not intended to be limiting, and as long as there is no substantial change in technical content, changes or adjustments in relative relationships should also be considered within the scope of the present invention.

As shown in FIGS. 1, 2, 9, and 10, the present invention provides an ammonia fuel transportation and injection line, which includes a hull (1), a plurality of independent docks fixed to the hull (1), and each independent comprising a liquid cargo header pipe (2) and an injection header pipe (3) connected to a hold, and a leak treatment device mounted next to the liquid cargo header pipe (2) and injection header pipe (3) on each independent hold, The device comprises a gas detection station (4) mounted next to the liquid cargo header pipe (2) and the injection header pipe (3), and a wash tower (5) mounted on the hull (1). The cleaning scope covers the liquid cargo header pipe (2) and the injection header pipe (3). In this embodiment, there are three independent docks, sequentially from the front to the stern: the first independent dock (101), the second independent dock (102), and the third independent dock (103), and the independent docks are dry. It can be divided into model and spherical column type, and each independent dock is located in the structure of the hull (1) through supports. Among them, the diamond-shaped independent hold includes types A and B, as shown in Figures 1 and 2, and the design pressure of the diamond-shaped independent hold is less than 0.7 bar; The spherical-cylindrical independent hold includes a C type as shown in Figures 9 and 10, and the design pressure of the spherical-cylindrical independent hold exceeds 0.7 bar, so it can withstand a larger cabin pressure. The ammonia fuel transport and injection ship has both transport and injection functions simultaneously through a liquid cargo header pipe (2) and an injection header pipe (3) on each independent dock.

Preferably, as shown in FIGS. 1 and 9, the liquid cargo header pipe 2 on the second independent hold 102 in the center of the hull 1 is installed as a VLLVVL liquid cargo header pipe or an LVVLLV liquid cargo header pipe. The liquid cargo header pipe (2) simultaneously satisfies two liquid cargo injection methods, VLLV or LVVL, and is mainly used for injection of ammonia raw materials into the main ship hull (1) upstream of the port, and conversely, for ship-to-ship injection. Ammonia fuel injection can also be implemented. The injection header pipe (3) is equipped with two liquid pipelines and a gas phase pipeline; Here, L represents the liquid direction header, and V represents the gas direction header.

In addition, separate ship-to-ship ammonia fuel injection pipelines are further installed in the bow and stern areas of the hull 1 to meet the injection requirements of ships with different main dimensions:

In the case of one-to-one injection operation, when the storage tank of the order ship is placed in the bow, the injection ship and the order ship are anchored bow to bow and injection work is performed using the first independent dock 101; When the storage dock of the order ship is located in the center, the injection ship and the order ship are anchored in a bow-to-bow arrangement and perform injection work using the second independent dock 102; When the storage ship of the order ship is located at the stern, the injection ship and the order ship are anchored bow to stern and perform injection work using the first independent wharf 101.

In the case of one-to-two injection work, the injection ship and the first water supply ship are anchored bow-to-bow and perform injection work using the first independent dock 101, and the injection ship and the second water supply ship are anchored stern-to-stern. Therefore, simultaneous injection demand for two ships can be realized by performing the injection operation using the third independent dock 103.

The three independent docks in the present invention are for storing and transporting ammonia fuel, and the liquid cargo header pipe (2) and injection header pipe (3) on each independent dock store ammonia fuel from the outside and inject it toward the ship. It is easy to perform. The installed gas detection station 4 is for detecting the ammonia content in the air, and the alarm value of the ammonia content is set to an ammonia volume concentration of 20-50 ppm (parts per million concentration). When the ammonia content exceeds the standard, the washing tower (5) releases and sprays water, and by using the principle that ammonia gas easily dissolves in water, the air content of ammonia gas is reduced, so that the human body inhales ammonia gas and becomes poisoned. prevent it from happening.

In addition, as shown in FIGS. 1, 2, 9, and 10, the leak treatment device includes a receiving tray (6) installed below the injection header pipe (3), a liquid cargo header pipe (2), and an injection header. It further includes a central dock (7) installed below the pipe (3), the central dock (7) is mounted on the hull (1) below the receiving tray (6), and the central dock (7) is the central dock (7). An opening is provided on the side so that the ammonia water inside can be discharged to the outside of the side. Preferably, the receiving tray (6) is installed below the injection header pipe (3) so that when the liquid ammonia moves or leaks, it can receive and collect the leaked liquid ammonia. The receiving tray (6) is installed in a two-layer structure. The upper layer is a mesh-type stainless steel layer, the lower layer is a solid stainless steel layer, an isolation water layer is installed between the upper and lower two layers, and the bottom of the receiving tray (6) is a pipe. It is connected to the central dock (7) through a line. Preferably, the acidic substance is sprayed into the central hold (7), and when the washing tower (5) releases water and sprays, the ammonia gas is dissolved in water and passes through the protruding flat deck on the hull (1) to the central hold (7). ) or the leaking liquid ammonia collected in the receiving tray (6) flows into the central hold (7) through the pipe and reacts with the acidic substance in the central hold (7) to produce ammonium salt, thereby causing ammonia poisoning of the human body. can be prevented.

In addition, as shown in FIGS. 1, 3, 4, and 8, a fuel self-supply dock 8 and a fuel power room 9 for driving the hull 1 are further installed in the hull 1. , an ammonia fuel main engine 10 is installed in the fuel power room 9, and the fuel self-supply dock 8 and the plurality of independent docks are each connected through a first gas direction pipeline 11, and each Stress valves 1101 are installed in all of the first gas direction pipelines 11, and the fuel self-supply dock 8 and any one independent dock are connected through the first liquid direction pipeline 12, A floor structure 804 is installed at the bottom of the self-supplied hold 8. Preferably, the bottom structure 804 is a double bottom structure, and can effectively resist vibration generated when the ammonia fuel main engine 10 installed in the fuel power room 9 is operated. The fuel self-supply dock 8 and the ammonia fuel main engine 10 form a loop connection through the second liquid direction pipeline 13 and the second gas direction pipeline 1301, and the first liquid direction pipeline ( An emergency isolation valve 1201 is installed in both 12) and the second liquid direction pipeline 13. Preferably, the fuel self-supply hold 8 is installed in the aft area of the hull 1, is connected to the third independent hold 103 through the first liquid direction pipeline 12, and is connected to the fuel power compartment 9. is installed in the lower part of the fuel self-supply hold (8). The material of the fuel self-supply hold 8 is low-temperature steel, stainless steel, aluminum alloy, high-manganese steel, etc., preferably low-temperature steel; Ammonia is corrosive and has relatively strong corrosion on carbon-manganese steel and nickel steel. More preferably, a small block can be divided directly below the gas chamber of the third independent dock (103) and used as a fuel self-supply dock (8), and there is no need to separately install the fuel self-supply dock (8), thereby saving money and materials. is saved. In addition, the emergency isolation valve 1201 is installed in the first liquid direction pipeline 12 and the second liquid direction pipeline 13, and when a liquid ammonia leak accident occurs, the emergency isolation valve 1201 automatically closes. This can prevent further leakage.

In addition, as shown in FIG. 8, both the second liquid direction pipeline 13 and the second gas direction pipeline 1301 are double-walled pipes, and the double-walled pipes have an exterior, an inner pipe installed through the exterior, and an exterior and It includes the tube gap formed between the inner tubes. The inner pipe of the second liquid direction pipeline 13 is for injecting liquid ammonia, the inner pipe of the second gas direction pipeline 1301 is for sending ammonia gas, and the compressed air pipeline 1302 is for compressed air. is injected into the pipe gap of the second liquid direction pipeline 13 and the pipe gap of the second gas direction pipeline 1301. The flow direction of compressed air in the second liquid direction pipeline 13 and the liquid ammonia injection direction are opposite, and the flow direction of compressed air in the second gas direction pipeline 1301 is opposite to the delivery direction of ammonia gas; If ammonia fuel leaks due to gaps or cracks in the inner pipes of the first liquid direction pipeline 12 and the second gas direction pipeline 1301, the compressed air flowing in the pipe gap can dilute the ammonia fuel. , can prevent ammonia concentration from reaching the flash point range of explosion.

Additionally, the self-fueling hold 8 may be type A1, type B1, or type C1. Here, as shown in FIG. 5, the C1-type fuel self-supply hold 8 includes an inner shell 801 and a bottom surface structure 804 at the bottom of the fuel self-supply hold 8, and the inner shell 801 ) An insulating layer 803 is installed on the surface. If the tank capacity of the fuel self-supply hold (8) is less than 5000 cubic meters, the inner shell (801) alone can withstand the pressure of liquid ammonia, and at the same time, the PU insulation layer (803) is installed on the surface of the inner shell (801). do. Additionally, a layer of thin iron plate may be attached to the outside of the PU insulating layer 803 to more reliably insulate the liquid ammonia. Preferably, as shown in FIG. 3, the type A1 or type B1 fuel self-supply hold 8 includes an inner shell 801, an outer shell 802 surrounding the inner shell 801, and a fuel self-supply hold. (8) It includes a floor structure 804 installed on the bottom, and an insulating layer 803 is installed on the inner surface of the outer shell 802. If the tank capacity of the fuel self-supply hold (8) exceeds 5000 cubic meters, an outer shell (802) is installed to prevent leakage by relying on the outer shell (802) structure when the inner shell (801) structure loses its function. It must be possible to transport liquid, and at the same time, a PU insulation layer 803 is installed on the inner surface of the outer shell 802 to keep the liquid ammonia cool. The self-fueling hold (8) has a tank capacity of 5000 cubic meters and, when fully filled, can travel approximately 20,000 nautical miles. Preferably, a passage for people to enter is further opened in the outer shell of the A1 type or B1 type fuel self-supply hold 8 so that leakage of ammonia fuel can be discovered in time by checking the condition of the inner shell 801. do.

In addition, as shown in FIGS. 1 and 9, a compressor room 21 and a ventilation tower 14 are further installed in the hull 1, and the compressor room 21 is connected to the first gas direction pipeline 11 and connected, a pressure sensing device is installed in the first gas direction pipeline 11, and the ventilation tower 14 is connected to an independent dock. Preferably, the fuel self-supply dock 8 and the plurality of independent docks are respectively connected through first gas direction pipelines 11, and the plurality of first gas direction pipelines 11 are one section of pipeline. The compressor room 21 is connected to the common pipeline of the plurality of first gas direction pipelines 11, and when the pressure in each independent hold exceeds the design value of the liquid tank, the stress valve 1101 is opened. Open, ammonia gas flows into the pressure sensing device in the first gas direction pipeline 11, whereupon the compressor in the compressor room 21 operates and operates the liquefaction system, thereby lowering the pressure in each independent hold. If a compressor fails and the liquefaction system cannot be operated, ammonia gas is released through the ventilation tower (14) to lower the pressure in each independent hold. In this embodiment, the number of ventilation towers 14 is one; In another embodiment, the quantity of ventilation towers 14 corresponds one-to-one with the quantity of independent wharves, that is, one ventilation tower 14 may be placed independently in each independent wharf.

In addition, as shown in FIGS. 6 and 7, a fence 1501 is fixed to the hull 1, a fender 15 is disposed on the fence 1501, and the fender 15 has a central floating ball 1502. , a tire pad 1503 installed on the outer wall of the center floating ball 1502, a center lock 1504 installed on both ends of the center floating ball 1502, and the center of the center lock 1504 and the tire pad 1503. It includes a chain 1505 that connects. Preferably, both ends of the fender 15 are spherical and the middle is cylindrical. The inside of the central floating ball 1502 must maintain a certain pressure, and the tire pad 1503 must ensure appropriate elastic deformation. Additionally, in this embodiment, the installed number of fenders 15 is four, and in normal sailing situations, the fenders 15 are placed on the fence 1501; When injecting into a ship, the fender 15 is placed on the sea surface between the injection line and the water column through a crane mechanism to alleviate the collision force between the injection line and the water column and meet the safety requirements for injection of ammonia fuel between ships.

In addition, as shown in FIGS. 1 and 9, a mooring dock 16 is installed at the bow of the hull 1, a storage battery room 17 is installed at the stern of the hull 1, and the hull 1 ) Side thruster chambers (18) are installed on both the bow and stern side walls. The mooring dock (16) is intended to satisfy the mooring needs of the ship, and when the ship does not operate the main engine in the port, energy is supplied through the storage battery room (17) to maintain the power demand in the port; The side thruster chambers 18 ensure that the hull 1 has good handling performance.

In addition, as shown in FIGS. 1 and 9, a personnel accommodation dock 19 is installed at the bow of the hull 1, and the leak treatment device further includes a plurality of emergency shower rooms 20. (20) is installed at the top of each independent dock. Preferably, the personnel accommodation hold 19 is located at the forefront of the vessel and has the following actions: The first action is to ensure a thorough separation of personnel living areas and ammonia fuel work areas, thereby greatly reducing the risk of ammonia poisoning. The second effect is that the blind spot can be minimized due to good visibility adjustment (when the vessel is in a random operating state, the blind spot of the vessel is less than 1 times the length of the vessel); The third effect is that the wide afterdeck space can be utilized more fully. In addition, the outer shape of the personnel accommodation dock 19 can be raised at a 45 degree angle to reduce wind resistance. Preferably, devices such as an eye wash sink and a portable ammonia gas leak monitor are installed inside the emergency shower room 20, so that the volume concentration of ammonia in the air at the gas detection station 4 reaches 400 ppm per cubic meter. When detected, it operates automatically to quickly clean the contaminated ammonia gas.

In addition, in a situation where the hull 1 is provided with a protruding flat deck and the main scale frame of the hull 1 is limited, the first independent dock 101, the second independent dock 102, and the third independent dock 103 ) can increase the capacity. By installing a protruding flat deck at a higher position than the central hold (7), when the main scale of the ship is constant, the capacity of the liquid tank can be effectively expanded by breaking through the limitations of the liquid tank capacity design, and at the same time, the weight of the liquefied gas ship can be increased. It can be ensured that the center does not change significantly. In addition, by providing the hull 1 with a protruding flat deck, the area of the deck surface is effectively extended, allowing more equipment, such as fenders 15, to be placed.

In addition, a centerline bulkhead 104 is installed inside the independent dock, and the centerline bulkhead 104 separates the independent dock on the center line from the head to the stern. As shown in Figures 2 and 10, the first independent hold 101 is divided into a left compartment of the first independent hold 101 and a right compartment of the first independent hold 101 by the centerline bulkhead 104; The second independent dock 102 is divided into a left compartment of the second independent dock 102 and a right compartment of the second independent dock 102 by the center line bulkhead 104; The third independent dock 103 is divided into a left compartment of the third independent dock 103 and a right compartment of the third independent dock 103 by the center line bulkhead 104. The installed centerline bulkhead 104 can effectively reduce the effect of shaking of the independent dock on the structure of the hull (1). When a ship collides, only a single compartment (left or right compartment) is damaged, which can improve the stability of the ship.

The ammonia fuel transportation and injection ship disclosed by the present invention is a first independent dock (101), a second independent dock (102), a third independent dock (103), and a fuel tank through the liquid cargo header pipe (2) before sailing. Ammonia fuel is injected into the supply dock (8), and the fuel self-supply dock (8) injects ammonia fuel into ammonia through the fuel supply pipe system, the first liquid direction pipeline (12) and the second gas direction pipeline (1301). It is transported to the fuel main engine (10), and the ammonia fuel burns to propel the navigation of the hull (1). When it is necessary to inject a ship, the fender (15) is first left on the sea surface to relieve the collision force between the ship and the ship, and then the ammonia fuel is injected into the water column through the injection header pipe (3) on the independent dock. During the voyage, the gas detection station (4) monitors the ammonia concentration in the air, and when it detects that the ammonia concentration exceeds the standard, equipment such as the washing tower (5), the central dock (7), and the emergency shower room (20) are installed. Urgently dispose of leaked ammonia gas through; If the pressure in the independent hold is too high, equipment such as the compressor room (21) and ventilation tower (14) urgently releases the pressure in the independent hold to prevent accidents.

In summary, the present invention effectively overcomes various shortcomings in the prior art and has high industrial use value.

The above examples merely illustratively illustrate the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art can modify and change the above embodiments without departing from the spirit and scope of the present invention. Accordingly, all equivalent modifications or variations made by a person skilled in the art without departing from the spirit and technical idea disclosed by the present invention should still be included in the claims of the present invention.

1: Hull 2: Liquid Cargo Header Pipe
3: Injection header pipe 4: Gas detection station
5: Washing tower 6: Receiving tray
7: Central dock 8: Self-fueling dock
9: Fuel power room 10: Ammonia fuel main engine
11: first gas direction pipeline 12: first liquid direction pipeline
13: second liquid direction pipeline 14: ventilation tower
15: fender 16: mooring dock
17: storage battery room 18: side thruster chamber
19: Occupied hold 20: Emergency shower room
21: Compressor room 101: 1st independent dock
102: 2nd independent dock 103: 3rd independent dock
104: centerline bulkhead 801: inner shell
802: outer shell 803: insulating layer
804: bottom structure 1101: stress valve
1201: Emergency isolation valve 1301: Second gas direction pipeline
1302: Compressed air pipeline 1501: Fence
1502: Center floating ball 1503: Tire pad
1504: Center lock 1505: Chain

Claims (10)

In ammonia fuel transport and injection lines,
A hull (1), a plurality of independent docks fixed to the hull (1), a liquid cargo header pipe (2) and an injection header pipe (3) connected to each independent dock, and a liquid cargo header pipe (2) in each independent dock; and a leak treatment device mounted next to the injection header pipe (3), wherein the leak treatment device includes a liquid cargo header pipe (2), a gas detection station (4) mounted next to the injection header pipe (3), and a hull (1). ), and the washing range of the washing tower (5) covers the liquid cargo header pipe (2) and the injection header pipe (3), ammonia fuel transportation and main. Selected. According to paragraph 1,
The leak treatment device further includes a receiving tray (6) installed below the injection header pipe (3), and a central dock (7) installed below the liquid cargo header pipe (2) and the injection header pipe (3), The central hold (7) is installed in the hull (1) below the receiving tray (6), and the central hold (7) has an opening on the side; An ammonia fuel transport and injection line, characterized in that the lower part of the receiving tray (6) is connected to the central dock (7) through a pipeline. According to paragraph 1,
A fuel self-supply dock (8) and a fuel power room (9) for driving the hull (1) are further installed in the hull (1), and an ammonia fuel main engine (10) is installed in the fuel power room (9). The fuel self-supply dock 8 and the plurality of independent docks are each connected through a first gas direction pipeline 11, and each first gas direction pipeline 11 is provided with a stress valve 1101. is installed, and the fuel self-supply dock (8) and any one independent dock are connected through a first liquid direction pipeline (12), and the fuel self-supply dock (8) and the ammonia fuel main engine (10) constitutes a loop connection through the second liquid direction pipeline 13 and the second gas direction pipeline 1301, and is connected to both the first liquid direction pipeline 12 and the second liquid direction pipeline 13. An ammonia fuel transport and injection line, characterized in that an emergency isolation valve (1201) is installed. According to paragraph 3,
Both the second liquid direction pipeline 13 and the second gas direction pipeline 1301 are double-walled pipes, and the double-walled pipe includes an outer pipe, an inner pipe installed through the outer pipe, and a pipe gap formed between the outer pipe and the inner pipe. The inner pipe of the second liquid direction pipeline 13 is for injecting liquid ammonia, and the inner pipe of the second gas direction pipeline 1301 is for sending ammonia gas, and the second liquid direction pipe is for Both the pipe gap of the line 13 and the pipe gap of the second gas direction pipeline 1301 are for compressed air to flow, and the flow direction of the compressed air in the second liquid direction pipeline 13 is the liquid ammonia injection direction. and the flow direction of compressed air in the second gas direction pipeline (1301) is opposite to the delivery direction of ammonia gas. According to paragraph 3,
The fuel self-supply hold 8 includes an inner shell 801 and a bottom structure 804 installed on the bottom of the fuel self-supply hold 8, and an insulating layer on the outer surface of the inner shell 801. (803) Ammonia fuel transport and injection line, characterized in that installed. According to paragraph 3,
The fuel self-supply hold 8 includes an inner shell 801, an outer shell 802 surrounding the inner shell 801, and a bottom structure 804 installed on the bottom of the fuel self-supply hold 8, An ammonia fuel transport and injection line, characterized in that an insulating layer (803) is installed on the inner surface of the outer shell (802). According to paragraph 3,
A compressor room 21 and a ventilation tower 14 are further installed in the hull 1, and the compressor room 21 is connected to a first gas direction pipeline 11, and the first gas direction pipeline 11 ), wherein a pressure sensing device is installed, and the ventilation tower (14) is connected to an independent dock. According to paragraph 1,
A fence 1501 is fixed to the hull 1, a fender 15 is disposed on the fence 1501, and the fender 15 is installed on the center floating ball 1502 and the outer wall of the center floating ball 1502. It includes a tire pad 1503, a center lock 1504 installed on both ends of the center floating ball 1502, and a chain 1505 connecting the center lock 1504 and the center of the tire pad 1503; An ammonia fuel transport and injection line, characterized in that both ends of the fender (15) are spherical and the middle is cylindrical. According to paragraph 1,
A mooring dock (16) is installed at the bow of the hull (1), a storage battery room (17) is installed at the stern of the hull (1), and side thrusters are installed on both the bow and stern side walls of the hull (1). Chamber 18 is installed; A personnel accommodation dock 19 is installed at the bow of the hull 1, and the leakage treatment device further includes a plurality of emergency shower rooms 20, and the emergency shower room 20 is located at the upper part of each independent dock. An ammonia fuel transport and injection line, characterized in that installed. According to paragraph 1,
A centerline bulkhead (104) is installed inside the independent dock, and the centerline bulkhead (104) is installed on the centerline from the head to the stern to separate the independent docks. An ammonia fuel transportation and injection ship.