Ammonia fuel leakage treatment system and ammonia fuel leakage treatment method

Abstract

The invention relates to the technical field of ship manufacturing, in particular to an ammonia fuel leakage treatment system and an ammonia fuel leakage treatment method. An ammonia fuel leakage treatment system applied to the ammonia fuel leakage treatment method comprises a replacement module, a collection module, a purification module and a waste liquid storage module, and the replacement module can fill a hollow interlayer between an outer pipe and an inner pipe of a double-wall pipe with nitrogen, water and nitrogen in sequence; the collecting module is used for collecting liquid ammonia at a hollow interlayer between an outer pipe and an inner pipe of the double-wall pipe, the collecting module is provided with a first output end and a second output end, the first output end is communicated with a liquid ammonia supply system, the collecting module can convey the collected liquid ammonia into the liquid ammonia supply system, and the second output end is communicated with the purifying module; the purification module contains water, the water is used for absorbing ammonia gas, the waste liquid storage module is used for storing water in a hollow interlayer between an outer pipe and an inner pipe of the double-wall pipe and water in the purification module, and leaked ammonia fuel is safely treated and recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to an ammonia fuel leakage treatment system and an ammonia fuel leakage treatment method. Background Art

[0002] With the increasing awareness of environmental protection, global ship propulsion technology is developing towards low-carbon and zero-carbon. In order to reduce carbon emissions, ammonia, as a carbon-free molecule, has aroused great interest in the choice of zero-carbon shipping fuel and has broad market prospects.

[0003] In related technologies, such as Figure 1 As shown, the double-walled pipe 2000 is connected to the liquid ammonia supply system 3000 and the power system 4000 respectively, and the liquid ammonia is transported from the liquid ammonia supply system 3000 to the power system 4000 by the double-walled pipe 2000. Liquid ammonia is highly toxic, and the inner tube of the double-walled pipe 2000 is complicated to operate on board. For example, accidental cracking caused by vibration fatigue or sudden pressure change often occurs, causing liquid ammonia to leak into the hollow interlayer between the inner tube and the outer tube of the double-walled pipe 2000. Therefore, it is necessary to strengthen the protection measures for ammonia leakage on board, and at the same time strengthen the daily maintenance of the ammonia fuel system and the engine to avoid harm to the personnel on board. Moreover, liquid ammonia leakage will irritate people's eyes, nose and throat, and people are at risk of poisoning. If liquid ammonia leaks, personnel should evacuate the area immediately, and seek medical treatment in serious cases.

[0004] Therefore, it is urgent to invent an ammonia fuel leakage treatment system and an ammonia fuel leakage treatment method to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide an ammonia fuel leakage treatment system and an ammonia fuel leakage treatment method to safely treat the ammonia fuel leaked between the outer tube and the inner tube of the double-walled tube, while recycling the leaked liquid ammonia to the greatest extent.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Ammonia fuel leakage treatment system, used to treat liquid ammonia leaking into the hollow interlayer between the outer tube and the inner tube of the double-walled tube, including:

[0008] A replacement module, wherein the replacement module can sequentially fill the hollow interlayer between the outer tube and the inner tube of the double-walled tube with nitrogen, water and nitrogen;

[0009] A collecting module, the collecting 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] A purification module, wherein the collection module has a first output end and a second output end, the first output end is connected to a liquid ammonia supply system, the collection module can transport the collected liquid ammonia to the liquid ammonia supply system, the second output end is connected to the purification module, the purification module has water, and the water is used to absorb ammonia; and

[0011] A waste liquid storage module is used to store water in the hollow interlayer between the outer tube and the inner tube of the double-walled tube and water in the purification module.

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

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

[0014] A second pipeline, one end of which can be communicated with the collection module or the waste liquid storage module, and the other end of which can be communicated with the hollow interlayer between the outer tube and the inner tube of the double-walled tube.

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

[0016] a switching valve, the switching valve being connected to the nitrogen storage tank, the water storage tank and the first pipeline respectively, the switching valve being able to switch between a first state and a second state, the switching valve in the first state blocking the water storage tank and connecting the nitrogen storage tank and the first pipeline; the switching valve in the second state blocking the nitrogen storage tank and connecting the water storage tank and the first pipeline;

[0017] The first pipeline is provided with a first control valve, and the first control valve is used to control the conduction and isolation of the first pipeline.

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

[0019] The main pipe section is in conduction with the hollow interlayer between the outer pipe and the inner pipe of the double-wall pipe; and

[0020] Two branch pipe sections are both connected to the main pipe section, any one of the two 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 provided with a second control valve, which is used to control the conduction and isolation of the main pipe section; the branch pipe sections are respectively provided with third control valves, which are used to control the conduction and isolation of the corresponding branch pipe sections.

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

[0023] A collecting chamber, connected to the output end of the replacement module, and used to collect liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-walled tube;

[0024] a third pipeline, the third pipeline being the second output end, one end of the third pipeline being in communication with the collection chamber, the other end of the third pipeline being in communication with the purification module, and the third pipeline being used to transport ammonia gas volatilized from liquid ammonia; and

[0025] A fourth pipeline, the fourth pipeline is the first output end, one end of the fourth pipeline is connected to the collection cabin, the other end of the fourth pipeline is connected to the liquid ammonia supply system, and the fourth pipeline is used to transport liquid ammonia.

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

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

[0028] An exhaust component, used for exhausting ammonia gas having a concentration lower than a preset concentration;

[0029] a fifth pipeline, one end of which is connected to the absorption component, the other end of which is connected to the discharge component, and the fifth pipeline is used to transport ammonia; and

[0030] A sixth pipeline, one end of which is connected to the absorption component, and the other end of which is connected to the waste liquid storage module, and the sixth pipeline is used to transport ammonia water.

[0031] As an optional solution, the ammonia fuel leakage treatment system further includes:

[0032] A feeding module, wherein the feeding module is capable of replenishing water to the purification module; and the feeding 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 tank;

[0035] a seventh pipeline, one end of which is in communication with the water replenishment tank, and the other end of which is in communication with the purification module, and the seventh pipeline is used for conveying water;

[0036] A spray component and an eighth pipe, one end of the eighth pipe is connected to the water replenishing tank, and the other end of the eighth pipe is connected to the spray component, the eighth pipe is used to transport water, and the spray component is used to spray water to the output end of the purification module.

[0037] The ammonia fuel leakage treatment method is applied to the ammonia fuel leakage treatment system as described above, and comprises the following steps:

[0038] S1, blocking the hollow interlayer between the outer tube and the inner tube of the double-walled tube;

[0039] S2, the replacement module fills the nitrogen into the hollow interlayer between the outer tube and the inner tube of the double-walled tube;

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

[0041] S4, the purification module purifies the ammonia and then discharges it;

[0042] S5, the replacement module fills the hollow interlayer between the outer tube and the inner tube of the double-walled tube with water;

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

[0044] Beneficial effects of the present invention:

[0045] The ammonia fuel leakage treatment system provided by the present invention fills the hollow interlayer between the outer tube and the inner tube of the double-walled tube with nitrogen through the replacement module, and can drive the leaked liquid ammonia to the collection module to achieve preliminary replacement and cleaning of the leaked liquid ammonia, and then fills the hollow interlayer between the outer tube and the inner tube of the double-walled tube with water to achieve full replacement of the leaked liquid ammonia, avoiding the presence of residual liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-walled tube, and finally fills the hollow interlayer between the outer tube and the inner tube of the double-walled tube with nitrogen to achieve cleaning of the hollow interlayer between the outer tube and the inner tube of the double-walled tube, ensuring the double-walled tube The wall tube works normally, and the liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-wall tube is transported back to the liquid ammonia supply system along the first output end through the collecting module, so that the leaked liquid ammonia can be recovered and the cost can be saved. The ammonia gas is transported to the purification module along the second output end through the collecting module, and the ammonia gas is absorbed by the water in the purification module, so that the absorption and treatment of the ammonia gas is realized. The waste liquid storage module is used to store the water in the hollow interlayer between the outer tube and the inner tube of the double-wall tube and the water in the purification module, so that the ammonia water can be collected, and the random discharge of ammonia water to pollute the environment can be avoided, thereby further improving the protection of the environment.

[0046] The present invention also provides an ammonia fuel leakage treatment method, which is applied to the above-mentioned ammonia fuel leakage treatment system to recover and treat the liquid ammonia leaked in the hollow interlayer between the outer tube and the inner tube of the double-walled tube. Not only is the treatment effect good, but the leaked liquid ammonia can also be recovered and utilized to the greatest extent, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a structural schematic diagram of a double-walled pipe, a liquid ammonia supply system and a driving mechanism provided in Embodiment 1 of the present invention;

[0048] Figure 2 It is a structural schematic diagram of an ammonia fuel leakage treatment system, a double-walled pipe, a liquid ammonia supply system, and a driving mechanism provided in Embodiment 1 of the present invention;

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

[0050] Figure 4 yes Figure 2 A local enlarged schematic diagram of the middle A;

[0051] Figure 5 This is a flow chart of the ammonia fuel leakage treatment method provided in the second embodiment of the present invention.

[0052] In the figure:

[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 member;

[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 component; 320, discharge component; 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 pipeline; 511, seventh control valve; 520, spray component; 530, eighth pipeline; 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 wall pipe;

[0061] 3000, liquid ammonia supply system;

[0062] 4000, power system;

[0063] 5000, nitrogen storage tank;

[0064] 6000. Water storage tank. DETAILED DESCRIPTION

[0065] In order to make the technical problem solved by the present invention, the technical solution adopted and the technical effect achieved more clearly, the technical solution of the present invention is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0066] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0068] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0069] Embodiment 1

[0070] In ammonia fuel ships, Figure 1 As shown, the double-walled pipe 2000 is connected to the liquid ammonia supply system 3000 and the power system 4000 respectively, and the liquid ammonia is transported from the liquid ammonia supply system 3000 to the power system 4000 by the double-walled pipe 2000. Liquid ammonia is highly toxic, and the inner pipe of the double-walled pipe 2000 is complicated to operate on board. For example, accidental cracking caused by vibration fatigue or sudden pressure change often occurs, causing liquid ammonia to leak into the hollow interlayer between the inner pipe and the outer pipe of the double-walled pipe 2000. Therefore, it is necessary to strengthen the protection measures for ammonia leakage on board, and at the same time strengthen the daily maintenance of the ammonia fuel system and the engine to avoid harm to the personnel on board. Moreover, liquid ammonia leakage will irritate people's eyes, nose and throat, and people are at risk of poisoning. If liquid ammonia leaks, personnel should evacuate the area immediately, and seek medical treatment in serious cases.

[0071] In order to solve the above problems, Figure 2 and Figure 3 As shown, this embodiment provides an ammonia fuel leakage treatment system. The ammonia fuel leakage treatment system includes a replacement module 100, a collection module 200, a purification module 300 and a waste liquid storage module 400, wherein the replacement module 100 can sequentially fill the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 with nitrogen, water and nitrogen, the collection module 200 is used to collect liquid ammonia at the hollow interlayer between the outer tube and the inner tube 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, 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, the purification module 300 has water, and the water is used to absorb ammonia, and the waste liquid storage module 400 is used to store the water at the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 and the water in the purification module 300.

[0072] The ammonia fuel leakage treatment system fills the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 with nitrogen through the replacement module 100, which can drive the leaked liquid ammonia to the collection module 200, and achieve preliminary replacement and cleaning of the leaked liquid ammonia. Then, the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 is filled with water, which can achieve full replacement of the leaked liquid ammonia and avoid residual liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000. Finally, the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 is filled with nitrogen to clean the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000, ensuring that the double-walled tube The tube 2000 works normally, and the liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 is transported back to the liquid ammonia supply system 3000 along the first output end through the collecting module 200, so that the leaked liquid ammonia can be recovered and the cost can be saved. The ammonia gas is transported to the purification module 300 along the second output end through the collecting module 200, and the ammonia gas is absorbed by the water in the purification module 300, so that the ammonia gas is absorbed and processed. The waste liquid storage module 400 is used to store the water in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 and the water in the purification module 300, so that the ammonia water can be collected and the random discharge of ammonia water to pollute the environment can be avoided.

[0073] It should be noted that the use of nitrogen to replace the leaked liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 is based on the stable chemical properties of nitrogen. In other embodiments, a gas with stable chemical properties can also be used to replace the leaked nitrogen in the hollow interlayer between the outer tube and the inner tube 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, wherein one end of the first pipe 110 can be connected to the nitrogen storage tank 5000 or the water storage tank 6000, and the other end of the first pipe 110 can be connected to the hollow interlayer between the outer tube and the inner tube 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 tube and the inner tube of the double-walled pipe 2000. By connecting the first pipe 110 to the hollow interlayer between the nitrogen storage tank 5000 and the outer tube and the inner tube of the double-walled tube 2000, or connecting the water storage tank 6000 and the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000, and connecting the second pipe 120 to the hollow interlayer between the collection module 200 and the outer tube and the inner tube of the double-walled tube 2000, or connecting the waste liquid storage module 400 and the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000, the nitrogen in the nitrogen storage tank 5000 can be transported along the first pipe 110 to the nitrogen storage tank 5000. The pipeline 110 inputs the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000, and transports the liquid ammonia leaked in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 to the collection module 200 along the second pipeline 120. It can also realize that the water in the water storage tank 6000 is transported to the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 along the first pipeline 110, and the nitrogen in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 is transported to the waste liquid storage module 400 along the second pipeline 120.

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

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

[0077] It should be noted that, in this embodiment, the first control valve 111 is a solenoid valve. The solenoid valve is easy to assemble and disassemble, has a sensitive response, and has a good sealing effect. In other embodiments, the first control valve 111 may also be a ball valve, a butterfly valve, or other types of shut-off valves, which are not specifically limited in this embodiment.

[0078] In one alternative, if 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 pipe and the inner pipe of the double-walled pipe 2000, the two branch pipe sections 122 are both connected to the main pipe section 121, any 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 splitting the second pipeline 120 into the connected main pipe section 121 and the two branch pipe sections 122, the main pipe section 121 is connected to the hollow interlayer between the outer pipe and the inner pipe of the double-walled pipe 2000, and any one of the two branch pipe sections 122 is connected to the purification module 300, and the other is connected to the waste liquid storage module 400, the effect 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 is achieved.

[0079] In addition, the main pipe section 121 is provided with a second control valve 123, and the second control valve 123 is used to control the conduction and isolation of the main pipe section 121; the branch pipe sections 122 are respectively provided with third control valves 124, and the third control valves 124 are used to control the conduction and isolation of the corresponding branch pipe sections 122. It should be noted that in this embodiment, the second control valve 123 and the third control valve 124 are both solenoid valves. The solenoid valve is easy to disassemble and assemble, has a sensitive response, and has a good sealing effect. In other embodiments, the second control valve 123 and the third control valve 124 can also be ball valves, butterfly valves or other types of shut-off valves, which are not specifically limited in this embodiment.

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

[0081] When water is needed to replace and discharge the nitrogen in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000, the switching valve 130 is switched to the second state, the third control valve 124 on the branch section 122 connected to the collection module 200 is closed, and the third control valve 124 on the branch section 122 connected to the waste liquid storage module 400 is connected, and water is used to discharge the nitrogen in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 out of the waste liquid storage module 400.

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

[0083] In order to facilitate determination of whether the nitrogen has fully replaced and discharged the liquid ammonia leaked in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000. In this embodiment, a first pressure detection member 140 is provided on the first pipeline 110, and the first pressure detection member 140 detects the pressure in the first pipeline 110, and a second pressure detection member 240 is provided in the collection module 200, and the second pressure detection member 240 detects the pressure in the collection module 200. When the pressures in the first pressure detection member 140 and the second pressure detection member 240 are consistent, it indicates that the nitrogen has fully replaced and discharged the liquid ammonia leaked in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 into the collection module 200.

[0084] like Figure 2 and Figure 3As shown, the collection module 200 includes a collection chamber 210, a third pipeline 220 and a fourth pipeline 230, wherein 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 in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000, the third pipeline 220 is a first output end, one end of the third pipeline 220 is connected to the collection chamber 210, and the other end of the third pipeline 220 is connected to the purification module 300, the third pipeline 220 is used to transport ammonia volatilized from liquid ammonia, the fourth pipeline 230 is a second output end, one end of the fourth pipeline 230 is connected to the collection chamber 210, and the other end of the fourth pipeline 230 is connected to the liquid ammonia supply system 3000, and the fourth pipeline 230 is used to transport liquid ammonia. By connecting the collecting cabin 210 with the branch pipe section 122, the liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 can be transported to the collecting cabin 210 along the second pipeline 120. By connecting the third pipeline 220 as the second output end with the collecting cabin 210 and the purification module 300, respectively, the ammonia gas in the collecting cabin 210 can be transported to the purification module 300 along the third pipeline 220. By connecting the fourth pipeline 230 as the first output end with the collecting cabin 210 and the liquid ammonia supply system 3000, respectively, the liquid ammonia collected in the collecting cabin 210 can be recovered to the liquid ammonia supply system 3000. It should be noted that in this embodiment, the second pressure detection member 240 is arranged at the collecting cabin 210, and the second pressure detection member 240 is used to detect the pressure in the collecting cabin 210.

[0085] In this embodiment, a fourth control valve 221 is provided on the third pipeline 220, and the fourth control valve 221 is used to control the conduction and isolation of the third pipeline 220. A fifth control valve 231 is provided on the fourth pipeline 230, and the fifth control valve 231 is used to control the conduction and isolation 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 in the collection chamber 210, the fourth control valve 221 is opened and the fifth control valve 231 is closed, so that the ammonia 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, the fourth control valve 221 and the fifth control valve 231 are both solenoid valves. Solenoid valves are easy to assemble and disassemble, have sensitive responses, and good sealing effects. 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 shutoff valves, which are not specifically limited in this embodiment.

[0087] In order to facilitate the control of ammonia delivery to the purification module 300, the collection module 200 provided in this embodiment also includes a first concentration detection member 250, which is arranged at the collection cabin 210, and the first concentration detection member 250 is communicatively connected with the fourth control valve 221, and the first concentration detection member 250 is used to detect the concentration of ammonia in the collection cabin 210. When the concentration of ammonia in the collection cabin 210 is greater than the preset concentration, the first concentration detection member 250 transmits the detection information to the fourth control valve 221, and the fourth control valve 221 conducts the third pipeline 220 according to the detection information. When the concentration of ammonia in the collection cabin 210 is less than the preset concentration, the first concentration detection member 250 transmits the detection information to the fourth control valve 221, and the fourth control valve 221 blocks the third pipeline 220 according to the detection information.

[0088] In an optional scheme, the purification module 300 includes an absorption component 310, an emission component 320, a fifth pipe 330 and a sixth pipe 340, wherein 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, and the sixth pipe 340 is used to transport ammonia water. By connecting the absorption component 310 with the third pipe 220 of the collection module 200, when the ammonia in the collection chamber 210 is transported to the absorption component 310 along the third pipe 220, the absorption component 310 can absorb the ammonia; by connecting the two ends of the fifth pipe 330 with 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 with the absorption component 310 and the waste liquid storage module 400 respectively, the ammonia water absorbed with ammonia in the absorption component 310 can be safely transferred.

[0089] To facilitate the control of the discharge of ammonia in the absorption assembly 310, as Figure 4 As shown, the sixth pipeline 340 is provided with a sixth control valve 341, and the sixth control valve 341 is used to control the conduction and isolation of the sixth pipeline 340. It should be noted that in this embodiment, the sixth control valve 341 is a solenoid valve. The solenoid valve is easy to disassemble and assemble, has a sensitive response, and has a good sealing effect. In other embodiments, the sixth control valve 341 can also be a ball valve, a butterfly valve, or other types of shut-off valves, which are not specifically limited in this embodiment.

[0090] In addition, the fifth pipe 330 is provided with a second concentration detection member 331, which is used to detect the ammonia concentration in the fifth pipe 330. By setting the second concentration detection member 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 discharge component 320 is lower than a preset concentration, thereby ensuring the discharge safety of ammonia.

[0091] In this embodiment, if Figure 4 As shown, the ammonia fuel leakage treatment system further includes a feeding module 500, wherein the feeding module 500 can replenish water to the absorption component 310 in the purification module 300; the feeding module 500 can 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 cooperation with the sixth pipeline 340 in the purification module 300, the water dissolved with safe ammonia can be discharged along the sixth pipeline 340 and the water not dissolved with ammonia can be filled into the absorption component 310, so as to replace the water in 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, so as to further reduce the ammonia concentration in the discharge gas.

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

[0093] In addition, in order to further facilitate the control of the feeding effect of the feeding module 500, the seventh pipeline 510 is provided with a seventh control valve 511, and the seventh control valve 511 is used to control the conduction and isolation of the seventh pipeline 510, and the eighth pipeline 530 is provided with an eighth control valve 531, and the eighth control valve 531 is used to control the conduction and isolation of the eighth control valve 531. It should be noted that in the present embodiment, the seventh control valve 511 and the eighth control valve 531 are both solenoid valves. The solenoid valve is easy to disassemble and assemble, has 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 a ball valve, a butterfly valve or other types of shut-off valves, which are not specifically limited in the present embodiment.

[0094] It should be noted that, in this embodiment, Figure 2 As shown, in the event of ammonia fuel leakage in the double-walled pipe 2000, the ammonia fuel leakage processing 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, the other end of the ninth pipe 610 is connected to the hollow interlayer between the outer pipe and the inner pipe of the double-walled pipe 2000, one end of the tenth pipe 620 is connected to the hollow interlayer between the outer pipe and the inner pipe of the double-walled pipe 2000, the other end of the tenth pipe 620 is connected to the outside, and the negative pressure fan 630 is arranged on the tenth pipe 620, and 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 pipe and the inner pipe of the double-walled pipe 2000 to ensure the normal operation of the double-walled pipe 2000.

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

[0096] In addition, to further facilitate verification of whether liquid ammonia leakage occurs in the double-walled pipe 2000, the ammonia fuel leakage treatment system also includes a detection module 700, wherein the detection module 700 includes a liquid ammonia leakage detection sensor, which is arranged at the double-walled pipe 2000. The liquid ammonia leakage detection sensor is used to detect whether liquid ammonia leakage occurs in the hollow interlayer between the outer tube and the inner tube of the double-walled pipe 2000.

[0097] Embodiment 2

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

[0099] S1, plugging the hollow interlayer between the outer tube and the inner tube of the double-walled pipe 2000;

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

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

[0102] S4, the purification module 300 purifies the ammonia and then discharges it;

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

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

[0105] The ammonia fuel leakage treatment method recovers and treats the liquid ammonia leaked in the hollow interlayer between the outer tube and the inner tube of the double-walled tube 2000 by applying the ammonia fuel leakage treatment system. Not only is the treatment effect good, but the leaked liquid ammonia can also be recycled to the greatest extent, saving costs.

[0106] It should be noted that when the detection module 700 in the ammonia fuel leakage treatment system detects liquid ammonia leakage in the hollow interlayer between the outer tube and the inner tube of the double-walled pipe 2000, the liquid ammonia supply system 3000 and the power system 4000 simultaneously block the double-walled pipe 2000 to achieve the blocking of the hollow interlayer between the outer tube and the inner tube 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 embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An ammonia fuel leakage treatment system, used to treat liquid ammonia leaking into the hollow interlayer between the outer tube and the inner tube of a double-walled tube (2000), characterized in that: include: A replacement module (100), wherein the replacement module (100) is capable of sequentially filling the hollow interlayer between the outer tube and the inner tube of the double-walled tube (2000) with nitrogen, water, and nitrogen; A collection module (200), the collection module (200) being 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) comprises a first output end and a second output end, the first output end is in communication with 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 end is in communication with the purification module (300), the purification module (300) comprises water, and the water is used to absorb ammonia gas; as well as A 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-walled tube (2000) and water in the purification module (300).

2. The ammonia fuel leakage treatment system according to claim 1, characterized in that: The replacement module (100) comprises: a first pipe (110), one end of which is in communication with the nitrogen storage tank (5000) or the water storage tank (6000), and the other end of which is in communication with the hollow interlayer between the outer tube and the inner tube of the double-walled tube (2000); and A second pipe (120), one end of which can be connected to the collection module (200) or the waste liquid storage module (400), and the other end of which can be connected to the hollow interlayer between the outer pipe and the inner pipe of the double-walled pipe (2000).

3. The ammonia fuel leakage treatment system according to claim 2, characterized in that: The replacement module (100) further comprises: a switching valve (130), the switching valve (130) being connected to the nitrogen storage tank (5000), the water storage tank (6000) and the first pipeline (110) respectively, the switching valve (130) being able to switch between a first state and a second state, the switching valve (130) in the first state blocking the water storage tank (6000) and connecting the nitrogen storage tank (5000) and the first pipeline (110); the switching valve (130) in the second state blocking the nitrogen storage tank (5000) and connecting the water storage tank (6000) and the first pipeline (110); The first pipeline (110) is provided with a first control valve (111), and the first control valve (111) is used to control the conduction and isolation of the first pipeline (110).

4. The ammonia fuel leakage treatment system according to claim 2, characterized in that: The second pipeline (120) comprises: The main pipe section (121) is in electrical communication with the hollow interlayer between the outer pipe and the inner pipe of the double-wall pipe (2000); and Two branch pipe sections (122), both of which are connected to the main pipe section (121), any one of which is connected to the waste liquid storage module (400), and the other is connected to the purification module (300).

5. The ammonia fuel leakage treatment system according to claim 4, characterized in that: The main pipe section (121) is provided with a second control valve (123), and the second control valve (123) is used to control the conduction and isolation of the main pipe section (121); the branch pipe sections (122) are respectively provided with third control valves (124), and the third control valves (124) are used to control the conduction and isolation of the corresponding branch pipe sections (122).

6. The ammonia fuel leakage treatment system according to claim 1, characterized in that: The collection module (200) comprises: A collecting chamber (210) is connected to the output end of the replacement module (100), and the collecting chamber (210) is used to collect liquid ammonia in the hollow interlayer between the outer tube and the inner tube of the double-walled tube (2000); a third pipeline (220), the third pipeline (220) being the second output end, one end of the third pipeline (220) being in communication with the collection chamber (210), and the other end of the third pipeline (220) being in communication with the purification module (300), and the third pipeline (220) being used to transport ammonia gas volatilized from liquid ammonia; and a fourth pipeline (230), the fourth pipeline (230) being the first output end, one end of the fourth pipeline (230) being in communication with the collecting chamber (210), and the other end of the fourth pipeline (230) being in communication with the liquid ammonia supply system (3000), and the fourth pipeline (230) being used for transporting liquid ammonia.

7. The ammonia fuel leakage treatment system according to claim 1, characterized in that: The purification module (300) comprises: an absorption component (310) for absorbing ammonia, the absorption component (310) being electrically connected to the second output end of the collection module (200); An exhaust component (320) is used to exhaust ammonia gas having a concentration lower than a preset concentration; a fifth pipeline (330), one end of the fifth pipeline (330) is connected to the absorption component (310), the other end of the fifth pipeline (330) is connected to the discharge component (320), and the fifth pipeline (330) is used to transport ammonia; and A sixth pipeline (340), one end of which is connected to the absorption component (310), and the other end of which is connected to the waste liquid storage module (400), and the sixth pipeline (340) is used to transport ammonia water.

8. The ammonia fuel leakage treatment system according to claim 1, characterized in that: The ammonia fuel leakage treatment system also includes: A feeding module (500), the feeding module (500) is capable of replenishing 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).

9. The ammonia fuel leakage treatment system according to claim 8, characterized in that: The feeding module (500) comprises: Water tank; a seventh pipeline (510), one end of the seventh pipeline (510) being in communication with the water replenishment tank, and the other end of the seventh pipeline (510) being in communication with the purification module (300), and the seventh pipeline (510) being used for conveying water; A spray component (520) and an eighth pipe (530), one end of the eighth pipe (530) being in communication with the water replenishment tank, and the other end of the eighth pipe (530) being in communication with the spray component (520), the eighth pipe (530) being used for conveying water, and the spray component (520) being used for spraying water toward the output end of the purification module (300).

10. A method for treating ammonia fuel leakage, characterized in that: The ammonia fuel leakage treatment system as claimed in any one of claims 1 to 9 comprises the following steps: S1, sealing the hollow interlayer between the outer tube and the inner tube of the double-walled tube (2000); S2, the replacement module (100) fills the nitrogen into the hollow interlayer between the outer tube and the inner tube of the double-walled tube (2000); S3, the collecting module (200) collects the leaked liquid ammonia, transports the liquid ammonia to the liquid ammonia supply system (3000), and transports the ammonia gas to the purification module (300); S4, the purification module (300) purifies the ammonia and then discharges it; S5, the replacement module (100) fills the hollow interlayer between the outer tube and the inner tube of the double-walled tube (2000) with water; S6. The replacement module (100) fills the hollow interlayer between the outer tube and the inner tube of the double-walled tube (2000) with nitrogen, and the water in the hollow interlayer between the outer tube and the inner tube 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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