Ammonia powered ore carrier

Abstract

This utility model discloses an ammonia-powered ore carrier, including a hull with multiple hatch covers on the deck. Between adjacent hatch covers are an ammonia refueling station, a fuel tank connection point, a type C ammonia storage tank, a fuel preparation room, an auxiliary equipment room, and an ammonia venting mast. A dual-fuel ammonia main engine is also located at the stern of the hull. The ammonia venting mast is installed on top of the fuel preparation room. The fuel tank connection point is located above the type C ammonia storage tank, near the hull side. Adjacent fuel tank connection points are connected by pipelines built into a tunnel, which is elevated above or below the hatch cover operating space. This utility model utilizes the space between hatch covers on the deck of an ore carrier to arrange the type C ammonia storage tank, auxiliary equipment room, and fuel preparation room, achieving higher space utilization, higher overall layout safety, and better economy.

Description

Technical Field

[0001] This utility model relates to the field of ore carrier technology, specifically to an ammonia-powered ore carrier. Background Technology

[0002] With the accelerated low-carbon transformation of the shipping industry, ammonia fuel, due to its zero-carbon emission characteristics, has become an important direction for the power retrofitting of ore carriers. However, existing ammonia fuel retrofitting technologies face many challenges in the application of large ore carriers: traditional solutions typically place fuel tanks in the stern or cargo hold area, but the limited space in the stern makes it difficult to meet the large-capacity storage requirements of ammonia fuel; while directly occupying cargo holds significantly reduces the ship's cargo capacity, affecting economic efficiency. In addition, ammonia fuel systems require complex equipment such as vapor treatment, pressurization supply, and safety monitoring, and the existing deck layout of ore carriers offers limited installation space. Therefore, there is an urgent need for an ammonia fuel retrofitting solution for large ore carriers that can make reasonable use of deck space to arrange C-type storage tanks, accommodate a highly efficient integrated fuel processing system, and simultaneously ensure hull structural safety and operational economy. Utility Model Content

[0003] The present invention aims to overcome at least one of the defects of the prior art and provide an ammonia-powered ore carrier to achieve high space utilization while ensuring safety and economy.

[0004] This utility model provides an ammonia-powered ore carrier, including a hull with multiple hatch covers on the deck; between adjacent hatch covers are an ammonia refueling station, a fuel tank connection point, a C-type ammonia storage tank, a fuel preparation room, an auxiliary equipment room, and an ammonia venting mast; the stern of the hull is also equipped with an ammonia dual-fuel main engine; wherein the ammonia venting mast is installed on top of the fuel preparation room; the fuel tank connection point is located above the C-type ammonia storage tank, close to the side of the hull; adjacent fuel tank connection points are connected by pipelines built into a pipe tunnel, which is elevated above or below the hatch cover movement space.

[0005] This invention utilizes the space between hatch covers on the deck of an ore carrier to arrange C-type ammonia storage tanks, auxiliary equipment rooms, and fuel preparation rooms; it features C-type ammonia storage tanks and a dual-fuel ammonia main engine, enabling the ship to have the driving capability and long-range performance with ammonia fuel as the primary power source; the ammonia vent mast is used for the safe discharge of ammonia-containing exhaust gas, and a control system ensures that the ammonia concentration in the discharged gas meets the requirements; the ammonia refueling station enables efficient fuel refueling and unloading operations of the C-type ammonia storage tanks; the fuel tank connection area centrally arranges all the connection devices, flanges, and valve components of the C-type ammonia fuel storage tanks. The fuel tank connection area centralizes all the joints and valves of the fuel tank.

[0006] The refueling operation of this invention involves refueling ammonia fuel into a type C ammonia storage tank via pipeline from the ammonia refueling station through the fuel tank connector. The unloading operation involves unloading ammonia fuel from the type C ammonia storage tank through the fuel tank connector and the ammonia refueling station to the dock or other vessels via pipeline. Fuel supply is achieved by transporting ammonia fuel from the type C ammonia storage tank through the fuel tank connector to the fuel preparation room, and then to the dual-fuel ammonia main engine for combustion and power propulsion. The fuel preparation room houses the fuel supply unit and other equipment to continuously supply the main engine with the required ammonia fuel. The auxiliary equipment room is specifically used to house non-explosion-proof auxiliary equipment unrelated to the ammonia fuel system.

[0007] Furthermore, the fuel preparation room is equipped with a fuel supply unit and a fuel valve assembly; the fuel valve assembly is connected to the ammonia dual-fuel main unit through a double-walled pipe; the fuel supply unit is used to pressurize and regulate the temperature of the fuel before delivering it to the ammonia dual-fuel main unit through the double-walled pipe; the fuel valve assembly is used to regulate the fuel flow rate and realize the emergency shut-off function.

[0008] More preferably, the fuel preparation room is further provided with a reliquefaction unit, which is used to cool and reliquefy the gaseous ammonia in the C-type ammonia storage tank to reduce the internal pressure of the storage tank.

[0009] The fuel preparation room of this invention is used to house equipment such as fuel valve assemblies, fuel supply units, and reliquefaction units. The fuel supply unit is used to pressurize and regulate the temperature of fuel before supplying it to the dual-fuel ammonia generator through a double-walled pipe; the fuel valve assemblies are used to regulate fuel flow and achieve emergency shut-off function; the fuel supply sequence is: C-type ammonia storage tank 104 - fuel supply unit - fuel valve assemblies - dual-fuel generator; the reliquefaction unit is used to cool and reliquefy the gaseous ammonia in the C-type ammonia storage tank to reduce the internal pressure of the storage tank.

[0010] Furthermore, the auxiliary equipment room is equipped with a nitrogen generator; the nitrogen generator supplies nitrogen to the fuel tank, fuel pipeline, ammonia dual-fuel main unit and ammonia refueling station through pipelines to achieve inerting and purging functions.

[0011] Preferably, the auxiliary equipment room is also equipped with an ammonia leak detection system. When the ammonia concentration reaches a preset threshold, the ammonia leak detection system will simultaneously trigger on-site and remote audible and visual alarms.

[0012] The auxiliary equipment room of this invention is used to house nitrogen generating equipment, an ammonia leak detection system, and electrical equipment. The nitrogen generating equipment supplies nitrogen to the fuel tank, fuel pipelines, dual-fuel ammonia generator, and ammonia refueling station via pipelines to achieve inerting and purging functions. When the ammonia concentration reaches a preset threshold, the ammonia leak detection system will simultaneously trigger on-site and remote audible and visual alarms.

[0013] Furthermore, the tunnel is equipped with ventilation openings and a fuel leak detector.

[0014] This utility model designs an overhead pipe tunnel, which is arranged above or below the hatch cover's operating space. The pipe tunnel has ventilation and leak detection functions, and contains pipelines for functional connections between the fuel tank joints in front of and behind the hatch cover, as well as between the fuel tank joints and the ammonia refueling station and fuel preparation room.

[0015] Furthermore, the ammonia-powered ore carrier described in this utility model also includes a protective frame for protecting the type C ammonia storage tank.

[0016] Preferably, the protective frame is located on the outer periphery of the type C ammonia storage tank and is arranged in a fence-like manner. The protective frame protects the type C ammonia storage tank from mechanical damage.

[0017] Furthermore, there are three hatch covers, which are named as follows from bow to stern: first hatch cover, second hatch cover, and third hatch cover.

[0018] Furthermore, the type C ammonia storage tank has two sets, respectively located between the first hatch cover and the second hatch cover, and between the second hatch cover and the third hatch cover.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention utilizes the space between hatch covers on the deck of an ore carrier to arrange C-type ammonia storage tanks, auxiliary equipment rooms, and fuel preparation rooms; it features C-type ammonia storage tanks and a dual-fuel ammonia main engine, enabling the ship to have the driving capability and long-endurance performance with ammonia fuel as the primary power source; it has an ammonia vent mast for the safe discharge of ammonia-containing exhaust gas, and a control system to ensure that the ammonia concentration in the exhaust gas meets the requirements; it has an ammonia refueling station to achieve efficient refueling and unloading operations for the C-type ammonia storage tanks; it has a fuel tank connection area to centrally arrange the connection devices, flanges, and valve components of all C-type ammonia fuel storage tanks; it has a fuel preparation room for arranging fuel supply units and other equipment to continuously supply the main engine with the required ammonia fuel; and it has an auxiliary equipment room specifically for arranging non-explosion-proof auxiliary equipment unrelated to the ammonia fuel system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an ammonia-powered ore carrier according to Embodiment 1 of this utility model.

[0022] Figure 2 This is a schematic diagram of an ammonia-powered ore carrier according to Embodiment 2 of this utility model.

[0023] Figure 3 This is a top view structural layout diagram of the ammonia-powered ore carrier of this utility model.

[0024] Figure 4 This is a schematic diagram of the protective frame structure of this utility model. Detailed Implementation

[0025] The accompanying drawings illustrate the technical solutions of this utility model in more detail. Throughout the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The described embodiments are only some, not all, of the embodiments of this utility model. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0028] Example 1

[0029] like Figure 1As shown, in this embodiment, one end of the hull is the bow 10, and the other end is the stern 20. A bridge and living quarters 30 are located on the stern 20. A type C ammonia storage tank 104, an auxiliary equipment room 105, and a fuel tank connection point 106 are arranged between the first hatch cover 109 and the second hatch cover 110. An ammonia venting mast 101, an ammonia refueling station 102, a fuel preparation room 103, a type C ammonia storage tank 104, and a fuel tank connection point 106 are arranged between the second hatch cover 110 and the third hatch cover 111. The base of the ammonia venting mast 101 is located on the fuel preparation area. The top of the preparation room 103; the fuel tank connection location 106 is as close as possible to the side of the ship, and the pipe tunnel 119 has built-in pipelines, which are arranged above the activity space of the second hatch cover 110. It is in an elevated state and does not affect the normal opening of the hatch cover. It is used for functional connection between the fuel tank connection locations 106 before and after the hatch cover 110, and for functional connection between the fuel tank connection location 106 before the hatch cover 110 and the ammonia refueling station 102 and the fuel preparation room 103; when the ship is loading and unloading cargo, the side of the ship without the pipe tunnel 119 is moored, which facilitates the use of the dock grab bucket.

[0030] Example 2

[0031] like Figure 2 As shown, in this embodiment, a C-type ammonia storage tank 104, an auxiliary equipment room 105, and a fuel tank connection location 106 are arranged between the first hatch cover 109 and the second hatch cover 110; an ammonia venting mast 101, an ammonia refueling station 102, a fuel preparation room 103, a C-type ammonia storage tank 104, and a fuel tank connection location 106 are arranged between the second hatch cover 110 and the third hatch cover 111, with the base of the ammonia venting mast 101 arranged on top of the fuel preparation room 103; the fuel tank connection location 106 is located as close as possible to the side of the ship, with a pipe tunnel 119 containing pipelines, arranged below the operating space of the second hatch cover 110, without affecting the normal opening of the hatch cover, and is used for functional connection between the fuel tank connection locations 106 before and after the second hatch cover 110, as well as functional connection between the fuel tank connection location 106 before the second hatch cover 110 and the ammonia refueling station 102 and the fuel preparation room 103; during loading and unloading of cargo, mooring can be carried out on both the port and starboard sides without affecting the use of the wharf grab.

[0032] Example 3

[0033] Combination Figure 1 and Figure 3 ,or Figure 2 and Figure 3As shown, this embodiment protects one operation method of this utility model. Specifically, the refueling operation involves refueling the C-type ammonia storage tank 104 via a pipeline from the ammonia refueling station 102 through the fuel tank connector 106. The unloading operation involves unloading ammonia fuel from the C-type ammonia storage tank 104 through the fuel tank connector 106 from the ammonia refueling station 102 to the dock or other ships. Fuel supply involves the C-type ammonia storage tank 104 transporting ammonia fuel to the fuel preparation room 103 via the fuel tank connector 106, pressurizing and temperature-regulating it through the fuel supply unit 117, and then transporting it to the ammonia dual-fuel main engine 108 for combustion to drive the ship via the fuel valve group 116 and double-walled pipe 112. The ammonia venting mast 101 collects ammonia-containing exhaust gases that cannot be directly vented from various locations, absorbs them through water spraying on the ammonia venting mast 101, and then releases them into the atmosphere. Figure 4 As shown, the protective frame 107 protects the Type C ammonia storage tank 104 and the fuel tank connection point 106 from mechanical damage. The first hatch cover 109, the second hatch cover 110, and the third hatch cover 111 are located on the main deck of the ship. They are closed during transport and slide parallel to the main deck to the side of the ship during loading and unloading, allowing the loading / unloading grab buckets to enter the cargo hold. The pipe tunnel designed in this invention is located above or below its trajectory space without interfering with it. The Type C ammonia storage tank 104 is arranged on the main deck between the two hatch covers, on the bulkhead structure between the two cargo holds, requiring no additional reinforcement. The Type C ammonia storage tank 104 can be configured in multiples of 1, 2, 3, or n depending on the voyage range, all within the protection scope of this invention.

[0034] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the preferred embodiments above, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model should not depart from the spirit and scope of this utility model. Those skilled in the art can also make other changes within the spirit of this utility model for its design, as long as they do not deviate from the technical effect of this utility model. These changes made according to the spirit of this utility model should all be included within the scope of protection claimed by this utility model.

Claims

1. An ammonia-powered ore carrier, comprising a hull, wherein a plurality of hatch covers are provided on the deck of the hull; characterized in that, Between adjacent hatch covers are an ammonia refueling station, a fuel tank connection area, a type C ammonia storage tank, a fuel preparation room, an auxiliary equipment room, and an ammonia venting mast; the stern of the hull is also equipped with an ammonia dual-fuel main engine; The ammonia venting mast is installed on top of the fuel preparation room; the fuel tank connector is located above the type C ammonia storage tank, near the hull side. The adjacent fuel tank joints are connected by pipes built into a pipe tunnel, which is erected above or below the hatch cover's movable space.

2. The ammonia-powered ore carrier according to claim 1, characterized in that, The fuel preparation room is equipped with a fuel supply unit and a fuel valve assembly; the fuel valve assembly is connected to the ammonia dual-fuel main unit through a double-walled pipe. The fuel supply unit is used to pressurize and regulate the temperature of the fuel before delivering it to the ammonia dual-fuel main unit through a double-walled pipe; The fuel valve assembly is used to regulate fuel flow and to enable emergency shut-off.

3. The ammonia-powered ore carrier according to claim 2, characterized in that, The fuel preparation room is also equipped with a reliquefaction unit, which is used to cool and reliquefy the gaseous ammonia in the C-type ammonia storage tank in order to reduce the internal pressure of the storage tank.

4. The ammonia-powered ore carrier according to claim 1, characterized in that, The auxiliary equipment room is equipped with a nitrogen generator; the nitrogen generator supplies nitrogen to the fuel tank, fuel pipeline, ammonia dual-fuel main unit and ammonia refueling station through pipelines to achieve inerting and purging functions.

5. The ammonia-powered ore carrier according to claim 4, characterized in that, The auxiliary equipment room is also equipped with an ammonia leak detection system. When the ammonia concentration reaches a preset threshold, the ammonia leak detection system will simultaneously trigger on-site and remote audible and visual alarms.

6. The ammonia-powered ore carrier according to claim 1, characterized in that, The tunnel is equipped with ventilation openings and a fuel leak detector.

7. The ammonia-powered ore carrier according to claim 1, characterized in that, It also includes a protective frame for protecting type C ammonia storage tanks.

8. The ammonia-powered ore carrier according to claim 7, characterized in that, The protective frame is located on the outer periphery of the C-type ammonia storage tank and is arranged in the form of a fence.

9. The ammonia-powered ore carrier according to any one of claims 1 to 8, characterized in that, There are three hatch covers, which are numbered from bow to stern as first hatch cover, second hatch cover, and third hatch cover.

10. The ammonia-powered ore carrier according to claim 9, characterized in that, The type C ammonia storage tank has two sets, located between the first hatch cover and the second hatch cover, and between the second hatch cover and the third hatch cover, respectively.

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