Ammonia fuel leakage treatment system and ammonia fuel leakage treatment method

Abstract

The present application relates to the technical field of shipbuilding, and particularly relates to an ammonia fuel leakage treatment system and an ammonia fuel leakage treatment method. The ammonia fuel leakage treatment method is applied to the ammonia fuel leakage treatment system, which comprises a replacement module, a collection module, a purification module and a waste liquid storage module. The replacement module can sequentially fill the hollow interlayer between the outer pipe and the inner pipe of the double-wall pipe with nitrogen, water and nitrogen. The collection module is used for collecting liquid ammonia at the hollow interlayer between the outer pipe and the inner pipe of the double-wall pipe. The collection module has a first output end and a second output end. The first output end is in communication with a liquid ammonia supply system, and the collection module can deliver the collected liquid ammonia to the liquid ammonia supply system. The second output end is in communication with the purification module. The purification module has water, which is used for absorbing ammonia. The waste liquid storage module is used for storing the water at the hollow interlayer between the outer pipe and the inner pipe of the double-wall pipe and the water in the purification module, so as to safely treat and recycle the leaked ammonia fuel.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to an ammonia fuel leak handling system and ammonia fuel leak handling method. Background Technology

[0002] With increasing environmental awareness, global marine propulsion technology is developing towards low-carbon and zero-carbon directions. To reduce carbon emissions, ammonia, as a carbon-free molecule, has attracted great interest and has broad market prospects as a zero-carbon shipping fuel.

[0003] In related technologies, such as Figure 1 As shown, the double-walled pipe 2000 connects to the liquid ammonia supply system 3000 and the power system 4000, respectively. Liquid ammonia is transported from the liquid ammonia supply system 3000 to the power system 4000 via the double-walled pipe 2000. Liquid ammonia is highly toxic, and the inner pipe of the double-walled pipe 2000 operates under complex conditions on board. Unexpected ruptures due to vibration fatigue or sudden pressure changes are common, causing liquid ammonia to leak into the hollow space between the inner and outer pipes of the double-walled pipe 2000. Therefore, it is essential to strengthen ammonia leak prevention measures on board, and to enhance daily maintenance of the ammonia fuel system and engine to prevent harm to personnel. Furthermore, a leaked liquid ammonia can irritate the eyes, nose, and throat, posing a risk of poisoning. If a liquid ammonia leak occurs, personnel should immediately evacuate the area, and medical attention should be sought in severe cases.

[0004] Therefore, there is an urgent need to invent an ammonia fuel leak handling system and ammonia fuel leak handling method to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an ammonia fuel leak treatment system and ammonia fuel leak treatment method to safely treat ammonia fuel leaked between the outer and inner pipes of a double-walled pipe, while maximizing the recovery and utilization of the leaked liquid ammonia.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An ammonia fuel spill handling system is used to handle liquid ammonia leaking into the hollow interlayer between the outer and inner pipes of a double-walled pipe system. The system includes:

[0008] The displacement module is capable of sequentially filling the hollow interlayer between the outer and inner tubes of the double-walled tube with nitrogen, water, and nitrogen.

[0009] Collection module, the collection module is used to collect liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-walled tube;

[0010] The purification module, the collection module having a first output terminal and a second output terminal, the first output terminal being connected to a liquid ammonia supply system, the collection module being able to transport the collected liquid ammonia to the liquid ammonia supply system, the second output terminal being connected to the purification module, the purification module containing water for absorbing ammonia gas; and

[0011] Waste liquid storage module, which is used to store water in the hollow interlayer between the outer and inner pipes of the double-walled pipe and water in the purification module.

[0012] As an optional solution, the replacement module includes:

[0013] A first conduit, one end of which is connected to a nitrogen storage tank or a water storage tank, and the other end of which is connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe; and

[0014] The second pipe has one end connected to the collection module or the waste liquid storage module, and the other end connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe.

[0015] As an optional solution, the replacement module further includes:

[0016] A switching valve is connected to the nitrogen storage tank, the water storage tank, and the first pipeline. The switching valve can switch between a first state and a second state. In the first state, the switching valve blocks the water storage tank and connects the nitrogen storage tank to the first pipeline. In the second state, the switching valve blocks the nitrogen storage tank and connects the water storage tank to the first pipeline.

[0017] A first control valve is installed on the first pipeline, which is used to control the opening and closing of the first pipeline.

[0018] As an optional solution, the second conduit includes:

[0019] The main pipe section is connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe; and

[0020] The system has two branch pipe sections, both of which are connected to the main pipe section. One of the branch pipe sections is connected to the waste liquid storage module, and the other is connected to the purification module.

[0021] As an optional solution, the main pipe section is equipped with a second control valve, which is used to control the opening and closing of the main pipe section; each branch pipe section is equipped with a third control valve, which is used to control the opening and closing of the corresponding branch pipe section.

[0022] As an optional solution, the collection module includes:

[0023] The collection chamber is connected to the output end of the replacement module. The collection chamber is used to collect liquid ammonia from the hollow interlayer between the outer and inner tubes of the double-walled tube.

[0024] The third pipe, which is the second output end, has one end connected to the collection chamber and the other end connected to the purification module. The third pipe is used to transport ammonia gas volatilized from the liquid ammonia.

[0025] The fourth pipe is the first output end. One end of the fourth pipe is connected to the collection chamber, and the other end of the fourth pipe is connected to the liquid ammonia supply system. The fourth pipe is used to transport liquid ammonia.

[0026] As an optional solution, the purification module includes:

[0027] An absorption component for absorbing ammonia gas, wherein the absorption component is connected to the second output terminal of the collection module;

[0028] An emission assembly is used to discharge ammonia gas at a concentration lower than a preset level.

[0029] A fifth conduit, one end of which is connected to the absorption assembly and the other end of which is connected to the emission assembly, is used to transport ammonia gas; and

[0030] The sixth pipe has one end connected to the absorption assembly and the other end connected to the waste liquid storage module. The sixth pipe is used to transport ammonia water.

[0031] As an optional solution, the ammonia fuel leak treatment system also includes:

[0032] The replenishment module is capable of replenishing water to the purification module; and the replenishment module is capable of spraying water to the output end of the purification module.

[0033] As an optional solution, the feeding module includes:

[0034] Water replenishment tank;

[0035] The seventh pipe has one end connected to the water replenishment tank and the other end connected to the purification module. The seventh pipe is used to transport water.

[0036] The system includes a spray unit and an eighth pipe, one end of which is connected to the water replenishment chamber and the other end of which is connected to the spray unit. The eighth pipe is used to transport water, and the spray unit is used to spray water onto the output end of the purification module.

[0037] A method for handling ammonia fuel leaks, applied to the ammonia fuel leak handling system described above, includes the following steps:

[0038] S1. Seal the hollow interlayer between the outer and inner pipes of the double-walled pipe;

[0039] S2, The displacement module fills the hollow interlayer between the outer and inner tubes of the double-walled tube with nitrogen gas;

[0040] S3. The collection module collects the leaked liquid ammonia, delivers the liquid ammonia to the liquid ammonia supply system, and delivers the ammonia gas to the purification module;

[0041] S4. The purification module purifies the ammonia gas before discharging it.

[0042] S5. The replacement module fills the hollow interlayer between the outer and inner pipes of the double-walled pipe with water.

[0043] S6. The replacement module fills the hollow interlayer between the outer and inner pipes of the double-walled pipe with nitrogen, and the water in the hollow interlayer between the outer and inner pipes of the double-walled pipe is transported to the waste liquid storage module to complete the treatment of ammonia fuel leakage.

[0044] The beneficial effects of this invention are:

[0045] The ammonia fuel leak handling system provided by this invention uses a displacement module to fill the hollow space between the outer and inner pipes of a double-walled pipe with nitrogen, driving the leaking liquid ammonia to a collection module for initial displacement and cleaning. Then, water is filled into the hollow space between the outer and inner pipes to fully replace the leaking liquid ammonia, preventing residual liquid ammonia from remaining in the hollow space. Finally, nitrogen is filled into the hollow space between the outer and inner pipes to clean it completely, ensuring the system remains intact. During normal operation of the double-walled pipe, the liquid ammonia in the hollow interlayer between the outer and inner pipes of the double-walled pipe is transported back to the liquid ammonia supply system via the collection module along the first output end, enabling the recovery of leaked liquid ammonia and saving costs. The ammonia gas is then transported to the purification module via the collection module along the second output end, where the ammonia gas is absorbed by the water in the purification module, achieving ammonia absorption and treatment. The waste liquid storage module stores the water in the hollow interlayer between the outer and inner pipes of the double-walled pipe and the water in the purification module, enabling the collection of ammonia water and preventing the indiscriminate discharge of ammonia water that pollutes the environment, further improving environmental protection.

[0046] The present invention also provides a method for handling ammonia fuel leaks, which is applied to the above-mentioned ammonia fuel leak handling system. The method recovers and treats the liquid ammonia leaked in the hollow interlayer between the outer and inner pipes of the double-walled pipe. It not only has a good treatment effect, but also maximizes the recovery and utilization of the leaked liquid ammonia, thus saving costs. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of the double-walled tube, liquid ammonia supply system, and drive mechanism provided in Embodiment 1 of the present invention;

[0048] Figure 2 This is a schematic diagram of the ammonia fuel leak treatment system, double-walled pipe, liquid ammonia supply system, and drive mechanism provided in Embodiment 1 of the present invention;

[0049] Figure 3 This is an architecture diagram of the ammonia fuel leakage system provided in Embodiment 1 of the present invention;

[0050] Figure 4 yes Figure 2 A magnified view of a portion of point A in the middle;

[0051] Figure 5 This is a flowchart of the ammonia fuel leakage treatment method provided in Embodiment 2 of the present invention.

[0052] In the picture:

[0053] 100. Replacement module; 110. First pipeline; 111. First control valve; 120. Second pipeline; 121. Main pipe section; 122. Branch pipe section; 123. Second control valve; 124. Third control valve; 130. Switching valve; 140. First pressure detection element;

[0054] 200. Collection module; 210. Collection chamber; 220. Third pipeline; 221. Fourth control valve; 230. Fourth pipeline; 231. Fifth control valve; 240. Second pressure detection element; 250. First concentration detection element;

[0055] 300. Purification module; 310. Absorption assembly; 320. Emission assembly; 330. Fifth pipeline; 331. Second concentration detection element; 340. Sixth pipeline; 341. Sixth control valve;

[0056] 400. Waste liquid storage module;

[0057] 500, Feeding module; 510, Seventh pipe; 511, Seventh control valve; 520, Spraying component; 530, Eighth pipe; 531, Eighth control valve.

[0058] 600. Negative pressure module; 610. Ninth pipeline; 611. Ninth control valve; 620. Tenth pipeline; 621. Tenth control valve; 630. Fan;

[0059] 700. Detection module;

[0060] 2000, Double-walled pipe;

[0061] 3000, Liquid ammonia supply system;

[0062] 4000, Power System;

[0063] 5000, nitrogen storage chamber;

[0064] 6000, Water storage tank. Detailed Implementation

[0065] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0066] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0067] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0069] Example 1

[0070] In ammonia-fueled ships, such as Figure 1 As shown, the double-walled pipe 2000 connects to the liquid ammonia supply system 3000 and the power system 4000, respectively. Liquid ammonia is transported from the liquid ammonia supply system 3000 to the power system 4000 via the double-walled pipe 2000. Liquid ammonia is highly toxic, and the inner pipe of the double-walled pipe 2000 operates under complex conditions on board. Unexpected ruptures due to vibration fatigue or sudden pressure changes are common, causing liquid ammonia to leak into the hollow space between the inner and outer pipes of the double-walled pipe 2000. Therefore, it is essential to strengthen ammonia leak prevention measures on board, and to enhance daily maintenance of the ammonia fuel system and engine to prevent harm to personnel. Furthermore, a leaked liquid ammonia can irritate the eyes, nose, and throat, posing a risk of poisoning. If a liquid ammonia leak occurs, personnel should immediately evacuate the area, and medical attention should be sought in severe cases.

[0071] To solve the above problems, such as Figure 2 and Figure 3 As shown, this embodiment provides an ammonia fuel leak treatment system. The ammonia fuel leak treatment system includes a displacement module 100, a collection module 200, a purification module 300, and a waste liquid storage module 400. The displacement module 100 sequentially fills the hollow interlayer between the outer and inner pipes of the double-walled tube 200 with nitrogen gas, water, and nitrogen gas. The collection module 200 collects liquid ammonia from the hollow interlayer between the outer and inner pipes of the double-walled tube 2000. The collection module 200 has a first output end and a second output end. The first output end is connected to the liquid ammonia supply system 3000, and the collection module 200 can transport the collected liquid ammonia to the liquid ammonia supply system 3000. The second output end is connected to the purification module 300, which contains water used to absorb ammonia gas. The waste liquid storage module 400 stores the water in the hollow interlayer between the outer and inner pipes of the double-walled tube 2000 and the water in the purification module 300.

[0072] This ammonia fuel leak handling system uses a displacement module 100 to fill the hollow space between the outer and inner pipes of the double-walled pipe 2000 with nitrogen, driving the leaking liquid ammonia to the collection module 200 for initial displacement and cleaning. Then, water is filled into the hollow space between the outer and inner pipes of the double-walled pipe 2000 to fully replace the leaking liquid ammonia, preventing residual liquid ammonia from remaining in the hollow space. Finally, nitrogen is filled into the hollow space between the outer and inner pipes of the double-walled pipe 2000 to clean the hollow space and ensure the double-walled pipe remains intact. The normal operation of pipe 2000 involves the collection module 200 transporting liquid ammonia from the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 back to the liquid ammonia supply system 3000 via the first output end, thus enabling the recovery of leaked liquid ammonia and saving costs. The collection module 200 also transports ammonia gas to the purification module 300 via the second output end, where the water in the purification module 300 absorbs the ammonia gas, achieving ammonia absorption and treatment. The waste liquid storage module 400 stores the water in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 and the water in the purification module 300, enabling the collection of ammonia water and preventing the indiscriminate discharge of ammonia water that pollutes the environment.

[0073] It should be noted that the use of nitrogen to replace the leaking liquid ammonia in the hollow interlayer between the outer and inner tubes of the double-walled tube 2000 is due to the chemical stability of nitrogen. In other embodiments, a chemically stable gas can also be used to replace the leaking nitrogen in the hollow interlayer between the outer and inner tubes of the double-walled tube 2000.

[0074] As an optional solution, the replacement module 100 includes a first pipe 110 and a second pipe 120. One end of the first pipe 110 can be connected to the nitrogen storage chamber 5000 or the water storage chamber 6000, and the other end of the first pipe 110 can be connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000. One end of the second pipe 120 can be connected to the collection module 200 or the waste liquid storage module 400, and the other end of the second pipe 120 can be connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000. By connecting the first pipe 110 to the hollow space between the nitrogen storage chamber 5000 and the outer and inner pipes of the double-walled pipe 2000, or to the hollow space between the water storage chamber 6000 and the outer and inner pipes of the double-walled pipe 2000, and by connecting the second pipe 120 to the hollow space between the collection module 200 and the outer and inner pipes of the double-walled pipe 200, or to the hollow space between the waste liquid storage module 400 and the outer and inner pipes of the double-walled pipe 2000, nitrogen in the nitrogen storage chamber 5000 can be allowed to flow along the first... Pipeline 110 enters the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000, and transports the leaked liquid ammonia in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 to the collection module 200 via the second pipeline 120. It can also transport water in the water storage tank 6000 to the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 via the first pipeline 110, and transport nitrogen gas in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 to the waste liquid storage module 400 via the second pipeline 120.

[0075] In an optional embodiment, the replacement module 100 further includes a switching valve 130, which is connected to the nitrogen storage chamber 5000, the water storage chamber 6000, and the first pipeline 110. The switching valve 130 can switch between a first state and a second state. In the first state, the switching valve 130 blocks the water storage chamber 6000 and connects the nitrogen storage chamber 5000 to the first pipeline 110; in the second state, the switching valve 130 blocks the nitrogen storage chamber 5000 and connects the water storage chamber 6000 to the first pipeline 110. By setting the switching valve 130 to switch between the first state and the second state, nitrogen and water can be sequentially introduced into the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 along the first pipeline 110.

[0076] In addition, a first control valve 111 is provided on the first pipeline 110, which is used to control the opening and closing of the first pipeline 110. By controlling the opening and closing of the first pipeline 110 through the first control valve 111, and in combination with the switching valve 130 switching between the first state and the second state, the replacement effect of liquid ammonia leaking in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 can be further improved.

[0077] It should be noted that in this embodiment, the first control valve 111 is a solenoid valve. Solenoid valves are easy to install and disassemble, have a sensitive response, and provide good sealing. In other embodiments, the first control valve 111 may also be a ball valve, butterfly valve, or other types of shut-off valves; this embodiment does not impose any specific limitations.

[0078] In one of the alternative solutions, such as Figure 3 As shown, the second pipeline 120 includes a main pipe section 121 and two branch pipe sections 122. The main pipe section 121 is connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000. Both branch pipe sections 122 are connected to the main pipe section 121. One of the two branch pipe sections 122 is connected to the waste liquid storage module 400, and the other is connected to the purification module 300. By dividing the second pipeline 120 into the connected main pipe section 121 and the two branch pipe sections 122, connecting the main pipe section 121 to the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000, and connecting one of the two branch pipe sections 122 to the purification module 300 and the other to the waste liquid storage module 400, the effects of liquid ammonia being input into the purification module 300 along the second pipeline 120 and ammonia water being transported to the waste liquid storage module 400 along the second pipeline 120 are achieved.

[0079] In addition, the main pipe section 121 is equipped with a second control valve 123, which is used to control the opening and closing of the main pipe section 121; each branch pipe section 122 is equipped with a third control valve 124, which is used to control the opening and closing of the corresponding branch pipe section 122. It should be noted that in this embodiment, both the second control valve 123 and the third control valve 124 are solenoid valves. Solenoid valves are easy to install and disassemble, have a sensitive response, and provide good sealing. In other embodiments, the second control valve 123 and the third control valve 124 may also be ball valves, butterfly valves, or other types of shut-off valves; this embodiment does not impose specific limitations.

[0080] When nitrogen is needed to replace and discharge the leaking liquid ammonia in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000, the switching valve 130 is switched to the first state, and the first control valve 111, the second control valve 123, and the third control valve 124 on the branch pipe section 122 connected to the collection module 200 are connected, so that the nitrogen transports the leaking liquid ammonia in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 to the collection module 200 along the second pipe 120.

[0081] When water is needed to replace and discharge nitrogen gas in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000, switch valve 130 to the second state, close the third control valve 124 on the branch pipe section 122 that is connected to the collection module 200, and open the third control valve 124 on the branch pipe section 122 that is connected to the waste liquid storage module 400, and use water to discharge nitrogen gas in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 into the waste liquid storage module 400.

[0082] When nitrogen is needed to displace and drain the water in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000, the switching valve 130 is switched back to the first state, and the first control valve 111, the second control valve 123, and the third control valve 124 on the branch pipe section 122 connected to the collection module 200 are activated, so that the nitrogen transports the water in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 to the waste liquid storage module 400 along the second pipe 120.

[0083] To facilitate determining whether nitrogen gas has sufficiently replaced and discharged the leaked liquid ammonia in the hollow interlayer between the outer and inner tubes of the double-walled tube 2000, in this embodiment, a first pressure detection element 140 is provided on the first pipe 110 to detect the pressure inside the first pipe 110, and a second pressure detection element 240 is provided inside the collection module 200 to detect the pressure inside the collection module 200. When the pressures inside the first pressure detection element 140 and the second pressure detection element 240 are consistent, it indicates that nitrogen gas has sufficiently replaced and discharged the leaked liquid ammonia in the hollow interlayer between the outer and inner tubes of the double-walled tube 200 into the collection module 200.

[0084] like Figure 2 and Figure 3As shown, the collection module 200 includes a collection chamber 210, a third pipe 220, and a fourth pipe 230. The collection chamber 210 is connected to a branch pipe section 122 of the replacement module 100. The collection chamber 210 is used to collect liquid ammonia from the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000. The third pipe 220 is the first output end. One end of the third pipe 220 is connected to the collection chamber 210, and the other end of the third pipe 220 is connected to the purification module 300. The third pipe 220 is used to transport ammonia gas volatilized from the liquid ammonia. The fourth pipe 230 is the second output end. One end of the fourth pipe 230 is connected to the collection chamber 210, and the other end of the fourth pipe 230 is connected to the liquid ammonia supply system 3000. The fourth pipe 230 is used to transport liquid ammonia. By connecting the collection chamber 210 to the branch pipe section 122, liquid ammonia in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 can be transported to the collection chamber 210 via the second pipe 120. By connecting the third pipe 220, which serves as the second output end, to both the collection chamber 210 and the purification module 300, ammonia gas in the collection chamber 210 can be transported to the purification module 300 via the third pipe 220. By connecting the fourth pipe 230, which serves as the first output end, to both the collection chamber 210 and the liquid ammonia supply system 3000, liquid ammonia collected in the collection chamber 210 can be recovered to the liquid ammonia supply system 3000. It should be noted that in this embodiment, the second pressure detection element 240 is installed in the collection chamber 210 and is used to detect the pressure inside the collection chamber 210.

[0085] In this embodiment, a fourth control valve 221 is provided on the third pipeline 220, which is used to control the opening and closing of the third pipeline 220. A fifth control valve 231 is provided on the fourth pipeline 230, which is used to control the opening and closing of the fourth pipeline 230. When it is necessary to transport the liquid ammonia in the collection chamber 210 to the liquid ammonia supply system 3000, the fourth control valve 221 is closed and the fifth control valve 231 is opened, so that the liquid ammonia in the collection chamber 210 is transported back to the liquid ammonia supply system 3000 along the fourth pipeline 230. When it is necessary to discharge the ammonia gas in the collection chamber 210, the fourth control valve 221 is opened and the fifth control valve 231 is closed, so that the ammonia gas in the collection chamber 210 is transported to the purification module 300 along the third pipeline 220.

[0086] It should be noted that in this embodiment, both the fourth control valve 221 and the fifth control valve 231 are solenoid valves. Solenoid valves are easy to install and disassemble, have a sensitive response, and provide good sealing. In other embodiments, the fourth control valve 221 and the fifth control valve 231 may also be ball valves, butterfly valves, or other types of shut-off valves; this embodiment does not impose specific limitations.

[0087] To facilitate the control of ammonia gas delivery to the purification module 300, the collection module 200 provided in this embodiment further includes a first concentration detector 250. The first concentration detector 250 is located in the collection chamber 210 and is communicatively connected to the fourth control valve 221. The first concentration detector 250 is used to detect the concentration of ammonia gas in the collection chamber 210. When the concentration of ammonia gas in the collection chamber 210 is greater than a preset concentration, the first concentration detector 250 transmits the detection information to the fourth control valve 221, and the fourth control valve 221 opens the third pipeline 220 based on the detection information. When the concentration of ammonia gas in the collection chamber 210 is less than the preset concentration, the first concentration detector 250 transmits the detection information to the fourth control valve 221, and the fourth control valve 221 blocks the third pipeline 220 based on the detection information.

[0088] In one optional embodiment, the purification module 300 includes an absorption component 310, an emission component 320, a fifth pipe 330, and a sixth pipe 340. The absorption component 310 is connected to the third pipe 220 of the collection module 200. The absorption component 310 is used to absorb ammonia. The emission component 320 is used to discharge ammonia with a concentration lower than a preset concentration. One end of the fifth pipe 330 is connected to the absorption component 310, and the other end of the fifth pipe 330 is connected to the emission component 320. The fifth pipe 330 is used to transport ammonia. One end of the sixth pipe 340 is connected to the absorption component 310, and the other end of the sixth pipe 340 is connected to the waste liquid storage module 400. The sixth pipe 340 is used to transport ammonia water. By connecting the absorption component 310 to the third pipe 220 of the collection module 200, the absorption component 310 can absorb ammonia when the ammonia in the collection chamber 210 is transported to the absorption component 310 along the third pipe 220. By connecting the two ends of the fifth pipe 330 to the discharge component 320 and the absorption component 310 respectively, the ammonia treated by the absorption component 310 can be transported to the discharge component 320 for discharge. By connecting the two ends of the sixth pipe 340 to the absorption component 310 and the waste liquid storage module 400 respectively, the ammonia water containing ammonia absorbed in the absorption component 310 can be safely transferred.

[0089] To facilitate control of ammonia water discharge within the absorption component 310, such as Figure 4 As shown, a sixth control valve 341 is installed on the sixth pipeline 340. The sixth control valve 341 is used to control the opening and closing of the sixth pipeline 340. It should be noted that in this embodiment, the sixth control valve 341 is a solenoid valve. Solenoid valves are easy to install and disassemble, have a sensitive response, and provide good sealing. In other embodiments, the sixth control valve 341 can also be a ball valve, butterfly valve, or other types of shut-off valve; this embodiment does not impose specific limitations.

[0090] In addition, a second concentration detector 331 is installed on the fifth pipe 330. The second concentration detector 331 is used to detect the ammonia concentration in the fifth pipe 330. By setting the second concentration detector 331 to detect the ammonia concentration in the fifth pipe 330, it is possible to determine whether the ammonia concentration in the gas discharged along the emission assembly 320 is lower than the preset concentration, thus ensuring the safety of ammonia emission.

[0091] In this embodiment, as Figure 4 As shown, the ammonia fuel leak treatment system also includes a feeding module 500, which can replenish water to the absorption component 310 within the purification module 300; the feeding module 500 can also spray water to the discharge component 320 of the purification module 300. By using the feeding module 500 to replenish water to the absorption component 310, in conjunction with the sixth pipe 340 within the purification module 300, water containing dissolved safe ammonia can be discharged along the sixth pipe 340, while water containing undissolved ammonia can be filled into the absorption component 310, thereby replacing the water within the absorption component 310. By spraying water to the discharge component 320 through the feeding module 500, the ammonia in the gas can be absorbed while the gas containing ammonia is discharged from the discharge component 320, further reducing the ammonia concentration in the discharged gas.

[0092] Specifically, the replenishment module 500 includes a water replenishment chamber (not shown in the figure), a seventh pipe 510, a spray component 520, and an eighth pipe 530. One end of the seventh pipe 510 is connected to the water replenishment chamber, and the other end of the seventh pipe 510 is connected to the absorption component 310 in the purification module 300. The seventh pipe 510 is used to transport water. One end of the eighth pipe 530 is connected to the water replenishment chamber, and the other end of the eighth pipe 530 is connected to the spray component 520. The eighth pipe 530 is used to transport water, and the spray component 520 is used to spray water onto the discharge component 320 of the purification module 300. By connecting the two ends of the seventh pipe 510 to the water replenishment tank and the absorption component 310 respectively, water in the water replenishment tank can be supplied to the absorption component 310 along the seventh pipe 510. By connecting the two ends of the eighth pipe 530 to the water replenishment tank and the spray component 520 respectively, water in the water replenishment tank can be transported to the spray component 520 along the eighth pipe 530, and the spray component 520 sprays the water onto the discharge component 320, so as to absorb ammonia gas in the gas discharged from the discharge component 320 by the sprayed water.

[0093] Furthermore, to further facilitate control of the feeding effect of the feeding module 500, a seventh control valve 511 is provided on the seventh pipe 510. The seventh control valve 511 is used to control the opening and closing of the seventh pipe 510. An eighth control valve 531 is provided on the eighth pipe 530. The eighth control valve 531 is used to control the opening and closing of the eighth control valve 531. It should be noted that in this embodiment, both the seventh control valve 511 and the eighth control valve 531 are solenoid valves. Solenoid valves are easy to install and disassemble, have a sensitive response, and a good sealing effect. In other embodiments, the seventh control valve 511 and the eighth control valve 531 can also be ball valves, butterfly valves, or other types of shut-off valves. This embodiment does not make specific limitations.

[0094] It should be noted that, in this embodiment, as Figure 2 As shown, in the event of ammonia fuel leakage within the double-walled pipe 2000, the ammonia fuel leakage handling system also includes a negative pressure module 600. The negative pressure module 600 includes a ninth pipe 610, a tenth pipe 620, and a negative pressure fan 630. One end of the ninth pipe 610 is connected to the outside, and the other end of the ninth pipe 610 is connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000. One end of the tenth pipe 620 is connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000, and the other end of the tenth pipe 620 is connected to the outside. The negative pressure fan 630 is installed on the tenth pipe 620. The negative pressure fan 630 can provide a negative pressure environment for the tenth pipe 620, the ninth pipe 610, and the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 to ensure the normal operation of the double-walled pipe 2000.

[0095] In addition, the ninth pipe 610 is equipped with a ninth control valve 611, which is used to control the opening and closing of the ninth pipe 610. The tenth pipe 620 is equipped with a tenth control valve 621, which is used to control the opening and closing of the tenth pipe 620. When liquid ammonia leaks from the double-walled pipe 2000, the ninth control valve 611 blocks the ninth pipe 610, and the tenth control valve 621 blocks the tenth pipe 620 to prevent the leaked liquid ammonia from being discharged along the ninth pipe 610 or the tenth pipe 620.

[0096] In addition, to further facilitate verification of whether liquid ammonia has leaked from the double-walled tube 2000, the ammonia fuel leak handling system also includes a detection module 700. The detection module 700 includes a liquid ammonia leak detection sensor, which is installed at the double-walled tube 2000. The liquid ammonia leak detection sensor is used to detect whether there is liquid ammonia leak in the hollow interlayer between the outer and inner tubes of the double-walled tube 2000.

[0097] Example 2

[0098] This embodiment provides a method for handling ammonia fuel leaks. For example... Figure 5As shown, the ammonia fuel leak treatment method is applied to the ammonia fuel leak treatment system provided in the above embodiment, and includes the following steps:

[0099] S1. Seal the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000;

[0100] S2, the replacement module 100 fills the hollow interlayer between the outer and inner tubes of the double-walled tube 2000 with nitrogen;

[0101] S3. The collection module 200 collects the leaked liquid ammonia, delivers the liquid ammonia to the liquid ammonia supply system 3000, and delivers the ammonia gas to the purification module 300.

[0102] S4, the ammonia gas is discharged after being purified by the purification module 300;

[0103] S5, the replacement module 100 fills the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 with water;

[0104] S6. The replacement module 100 fills the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 with nitrogen. The water in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000 is transported to the waste liquid storage module 400 to complete the treatment of ammonia fuel leakage.

[0105] This ammonia fuel leak treatment method utilizes the aforementioned ammonia fuel leak treatment system to recover and treat the liquid ammonia leaked in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000. It not only has a good treatment effect but also maximizes the recovery and utilization of the leaked liquid ammonia, saving costs.

[0106] It should be noted that when the detection module 700 in the ammonia fuel leak handling system detects a liquid ammonia leak in the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000, the liquid ammonia supply system 3000 and the power system 4000 simultaneously seal the double-walled pipe 2000 to seal the hollow interlayer between the outer and inner pipes of the double-walled pipe 2000.

[0107] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An ammonia fuel leak treatment system for treating liquid ammonia leaking into the hollow interlayer between the outer and inner pipes of a double-walled pipe (2000), characterized in that, include: The displacement module (100) is capable of sequentially filling the hollow interlayer between the outer and inner tubes of the double-walled tube (2000) with nitrogen, water and nitrogen; Collection module (200), the collection module (200) is used to collect liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-walled tube (2000); The purification module (300) and the collection module (200) have a first output terminal and a second output terminal. The first output terminal is connected to the liquid ammonia supply system (3000). The collection module (200) can transport the collected liquid ammonia to the liquid ammonia supply system (3000). The second output terminal is connected to the purification module (300). The purification module (300) contains water for absorbing ammonia gas. Waste liquid storage module (400), the waste liquid storage module (400) is used to store water in the hollow interlayer between the outer tube and the inner tube of the double wall tube (2000) and water in the purification module (300); The replacement module (100) includes a first pipe (110) and a second pipe (120). One end of the first pipe (110) can be connected to a nitrogen storage tank (5000) or a water storage tank (6000). The other end of the first pipe (110) is connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe (2000). One end of the second pipe (120) can be connected to the collection module (200) or the waste liquid storage module (400). The other end of the second pipe (120) is connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe (2000).

2. The ammonia fuel leak handling system according to claim 1, characterized in that, The replacement module (100) further includes: A switching valve (130) is connected to the nitrogen storage tank (5000), the water storage tank (6000), and the first pipeline (110). The switching valve (130) can switch between a first state and a second state. In the first state, the switching valve (130) blocks the water storage tank (6000) and connects the nitrogen storage tank (5000) to the first pipeline (110). In the second state, the switching valve (130) blocks the nitrogen storage tank (5000) and connects the water storage tank (6000) to the first pipeline (110). A first control valve (111) is provided on the first pipeline (110), and the first control valve (111) is used to control the opening and closing of the first pipeline (110).

3. The ammonia fuel leak handling system according to claim 1, characterized in that, The second conduit (120) includes: The main pipe section (121) is connected to the hollow interlayer between the outer and inner pipes of the double-walled pipe (2000); and Two branch pipe sections (122) are connected to the main pipe section (121). One of the two branch pipe sections (122) is connected to the waste liquid storage module (400), and the other is connected to the purification module (300).

4. The ammonia fuel leak handling system according to claim 3, characterized in that, The main pipe section (121) is provided with a second control valve (123), which is used to control the opening and closing of the main pipe section (121); the branch pipe sections (122) are respectively provided with a third control valve (124), which is used to control the opening and closing of the corresponding branch pipe section (122).

5. The ammonia fuel leak handling system according to claim 1, characterized in that, The collection module (200) includes: The collection chamber (210) is connected to the output end of the replacement module (100). The collection chamber (210) is used to collect liquid ammonia in the hollow interlayer between the outer and inner tubes of the double-walled tube (2000). The third pipe (220) is the second output end. One end of the third pipe (220) is connected to the collection chamber (210), and the other end is connected to the purification module (300). The third pipe (220) is used to transport ammonia gas volatilized from liquid ammonia. The fourth pipe (230) is the first output end. One end of the fourth pipe (230) is connected to the collection chamber (210), and the other end of the fourth pipe (230) is connected to the liquid ammonia supply system (3000). The fourth pipe (230) is used to transport liquid ammonia.

6. The ammonia fuel leak handling system according to claim 1, characterized in that, The purification module (300) includes: An absorption component (310) is used to absorb ammonia gas, and the absorption component (310) is connected to the second output terminal of the collection module (200); The emission assembly (320) is used to discharge ammonia gas with a concentration lower than a preset concentration; A fifth conduit (330), one end of which is connected to the absorption assembly (310), and the other end of which is connected to the discharge assembly (320), the fifth conduit (330) being used to transport ammonia; and The sixth pipe (340) is connected at one end to the absorption assembly (310) and at the other end to the waste liquid storage module (400). The sixth pipe (340) is used to transport ammonia water.

7. The ammonia fuel leak handling system according to claim 1, characterized in that, The ammonia fuel leak handling system also includes: A feeding module (500) is capable of supplying water to the purification module (300); and the feeding module (500) is capable of spraying water to the output end of the purification module (300).

8. The ammonia fuel leak handling system according to claim 7, characterized in that, The feeding module (500) includes: Water replenishment tank; The seventh pipe (510) is connected at one end to the water replenishment tank and at the other end to the purification module (300). The seventh pipe (510) is used to transport water. The spray element (520) and the eighth pipe (530) are provided. One end of the eighth pipe (530) is connected to the water replenishment tank, and the other end of the eighth pipe (530) is connected to the spray element (520). The eighth pipe (530) is used to transport water, and the spray element (520) is used to spray water to the output end of the purification module (300).

9. A method for handling ammonia fuel leaks, characterized in that, The system applied to the ammonia fuel leak treatment system as described in any one of claims 1 to 8 includes the following steps: S1. Seal the hollow interlayer between the outer and inner tubes of the double-walled tube (2000); S2, The replacement module (100) fills the hollow interlayer between the outer and inner tubes of the double-walled tube (2000) with nitrogen gas; S3. The collection module (200) collects the leaked liquid ammonia, delivers the liquid ammonia to the liquid ammonia supply system (3000), and delivers the ammonia gas to the purification module (300). S4. The purification module (300) purifies the ammonia gas and then discharges it; S5, the replacement module (100) fills the hollow interlayer between the outer and inner pipes of the double-walled pipe (2000) with water; S6. The replacement module (100) fills the hollow interlayer between the outer and inner pipes of the double-walled tube (2000) with nitrogen, and the water in the hollow interlayer between the outer and inner pipes of the double-walled tube (2000) is transported to the waste liquid storage module (400) to complete the treatment of ammonia fuel leakage.

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