Ammonia fuel valve group unit equipment

Abstract

The invention provides ammonia fuel valve group unit equipment, which belongs to the field of engine fuel supply, and comprises an ammonia gas supply system for providing ammonia gas for a transmitter, and a nitrogen purging system for cleaning and purging the ammonia gas supply system, the ammonia gas supply system comprises a main body pipeline, an external pipe a, a valve a, a fine filter and an external pipe b are sequentially arranged on the main body pipeline, and the valve a is used for controlling the opening and closing of the ammonia gas supply system; the nitrogen purging system comprises an external pipe c, a Y-shaped filter a, a nitrogen purging pipeline a, a valve e, a nitrogen purging pipeline b and a pipe joint a which are connected in sequence, the pipe joint a is communicated between the fine filter and the external pipe b, and the valve e is used for controlling the opening and closing of the nitrogen purging system. The ammonia fuel valve group unit equipment disclosed by the invention can safely provide high-quality ammonia gas for an ammonia fuel engine.

Description

Technical Field

[0001] The invention belongs to the field of engine fuel supply, and in particular relates to an ammonia fuel valve group unit device. Background Art

[0002] As a unique carbon-free and sulfur-free fuel, ammonia is extremely environmentally friendly during combustion, producing only nitrogen and pure water, and emitting no carbon dioxide or sulfur oxides. This characteristic makes it a highly promising clean energy option in the energy field. With the increasing global awareness of environmental protection and the deep concern about the dependence on traditional fossil fuels, ammonia fuel engine technology has emerged and gradually demonstrated its huge application prospects.

[0003] However, ammonia often contains certain impurities after mining, and ammonia is very likely to explode when mixed with oxygen, which places strict requirements on its purity as a fuel. At the same time, ammonia fuel engines are also highly sensitive to ammonia pressure, temperature and other parameters, all of which increase the complexity of the application of ammonia fuel engine technology. Although ammonia fuel engine technology has made certain progress, it is still in its infancy, and there is no mature fuel supply device that can safely and efficiently provide high-quality ammonia for ammonia fuel engines.

[0004] The Chinese patent application with publication number CN116892468A discloses an ammonia engine fuel supply and control system. Although the patent can realize the supply of ammonia, the purity of the ammonia provided is not ideal and may contain certain impurities. These impurities will not only affect the combustion efficiency of the engine, but also may cause corrosion or wear to the engine components, thereby affecting their service life and performance stability. In addition, the patent also has certain hidden dangers in the safety of ammonia fuel supply. Since ammonia is flammable and explosive, the patent failed to fully consider safety factors during the design process. Once leakage or abnormal conditions occur, it may cause serious consequences such as fire or explosion, posing a threat to the safety of personnel and property. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides an ammonia fuel valve group unit device, which can safely provide high-quality ammonia for an ammonia fuel engine.

[0006] The above object of the present invention is achieved through the following technical solutions:

[0007] The present invention provides an ammonia fuel valve group unit device, comprising an ammonia supply system for providing ammonia to a generator, and a nitrogen purge system for cleaning and purging the ammonia supply system; the ammonia supply system comprises a main pipeline, on which an external pipe a, a valve a, a fine filter, and an external pipe b are sequentially arranged, wherein the valve a is used to control the opening and closing of the ammonia supply system; the nitrogen purge system comprises an external pipe c, a Y-type filter a, a nitrogen purge pipe a, a valve e, a nitrogen purge pipe b, and a pipe joint a which are connected in sequence, wherein the pipe joint a is connected between the fine filter and the external pipe b, wherein the valve e is used to control the opening and closing of the nitrogen purge system.

[0008] According to one embodiment of the present invention, the main pipeline is further provided with valves b, valve c, and valve d. Valve b is arranged between the fine filter and the pipe joint a for safe isolation of ammonia; valve c is arranged between valve b and the pipe joint a for safe isolation of ammonia; valve d is arranged between the pipe joint a and the external pipe b for adjusting the pressure of ammonia.

[0009] According to one embodiment of the present invention, the valve a is a ball valve, the valve b is an interlocking valve a, the valve c is an interlocking valve b, the valve d is an ammonia pressure regulating valve, and the valve e is a solenoid valve.

[0010] According to one embodiment of the present invention, it also includes a gas emptying system for emptying ammonia in the ammonia supply system, and the gas emptying system includes a pipe joint b, an emptying pipe a, an explosion-proof solenoid valve a, a pipe joint c, an emptying pipe b, an explosion-proof solenoid valve b, a summary emptying pipe, and an external pipe d. The pipe joint b is connected between the fine filter and the interlock valve a, the pipe joint c is connected between the interlock valve a and the interlock valve b, the two ends of the emptying pipe a are respectively connected to the pipe joint b and the summary emptying pipe, the two ends of the emptying pipe b are respectively connected to the pipe joint c and the summary emptying pipe, the explosion-proof solenoid valve a is arranged on the emptying pipe a, the explosion-proof solenoid valve b is arranged on the emptying pipe b, and the summary emptying pipe is connected to the external pipe d.

[0011] According to one embodiment of the present invention, it also includes an air system for assisting the operation of the ammonia pressure regulating valve, the air system includes an external pipe e, a Y-type filter b, an air system pipeline, and a pipe joint d connected in sequence, and the pipe joint d is connected to the ammonia pressure regulating valve.

[0012] According to one embodiment of the present invention, it also includes an external frame system for support and protection, the external frame system includes a base, a lower box, an upper box, a fixing part, and a gas detection alarm, the lower box is arranged on the base, the upper box is arranged above the lower box and can be combined with the lower box, the fixing part is used to connect and fix the upper box and the lower box, the gas detection alarm is arranged on the inner side of the lower box, the external pipe a, external pipe c, and external pipe e pass through one side of the lower box, and the external pipe b and external pipe d pass through the other side of the lower box.

[0013] According to one embodiment of the present invention, the ammonia supply system also includes a copper conductive gasket a, a copper conductive gasket b, a copper conductive gasket c, a copper conductive gasket d, a pressure sensor a, a pressure sensor b, and a temperature sensor. The copper conductive gasket a is arranged between the external pipe a and the ball valve, the copper conductive gasket b is arranged between the ball valve and the fine filter, the copper conductive gasket c is arranged between the fine filter and the interlock valve a, the copper conductive gasket d is arranged between the ammonia pressure regulating valve and the external pipe b, the pressure sensor a is arranged between the copper conductive gasket b and the fine filter, the pressure sensor b is arranged between the fine filter and the copper conductive gasket c, and the temperature sensor is arranged between the copper conductive gasket d and the external pipe b.

[0014] According to one embodiment of the present invention, the nitrogen purge system also includes a flange a, a flange b, and a pressure sensor c, wherein the flange a is used to connect the external pipe c and the Y-type filter a, the flange b is used to connect the Y-type filter a and the nitrogen purge pipeline a, and the pressure sensor c is arranged on the nitrogen purge pipeline a.

[0015] According to one embodiment of the present invention, the gas exhaust system further comprises a flange c, and the flange c is used to connect the collective exhaust pipe and the external pipe d.

[0016] According to one embodiment of the present invention, the air system also includes a flange d, a flange e, and a pressure sensor d. The flange d is used to connect the external pipe e and the Y-type filter b. The flange e is used to connect the Y-type filter b and the air system pipeline. The pressure sensor d is arranged on the air system pipeline.

[0017] The beneficial effects of the present invention compared with the prior art solutions are:

[0018] 1. The present invention includes an ammonia supply system and a nitrogen purge system. The nitrogen purge system can be used to evacuate the air in the ammonia supply system in advance. Since nitrogen is relatively stable, when nitrogen evacuates the air in the ammonia supply system, no explosion hazard will occur when ammonia enters.

[0019] 2. The present invention provides a ball valve on the main pipeline, through which the entire system can be directly opened or closed manually, which can effectively ensure the safety of the entire system.

[0020] 3. The present invention provides a fine filter on the main pipeline, which can effectively filter out impurities in the ammonia gas and prevent the ammonia gas containing a large amount of impurities from entering the engine.

[0021] 4. The present invention provides an ammonia pressure regulating valve on the main pipeline, which can adjust the high-pressure ammonia entering the system to low-pressure ammonia suitable for use by the engine.

[0022] 5. The nitrogen purge system of the present invention includes a Y-type filter a, which can effectively ensure the purity of the nitrogen entering the ammonia supply system and prevent impurities in the nitrogen from reacting with the ammonia or causing damage to the equipment.

[0023] 6. The present invention also includes a gas exhaust system. When not in use for a long time, the gas exhaust system can safely remove the ammonia in the ammonia supply system to prevent a large amount of ammonia from being retained in the equipment and corroding the equipment.

[0024] 7. The external frame system of the present invention includes a gas detection alarm, which can alarm and remind staff when ammonia, nitrogen or air leaks in the equipment, effectively preventing waste or harm caused by various gas leaks.

[0025] 8. The present invention arranges a large number of copper conductive gaskets in the ammonia supply system, which can effectively prevent the generation of static electricity and thus reduce the risk of explosion.

[0026] 9. The present invention sets pressure sensors on both sides of the fine filter, and can detect the operation of the fine filter through the pressure sensors, which can prevent the fine filter from suddenly stopping and allowing ammonia containing impurities to enter the engine, and can also detect the pressure of ammonia entering the equipment to prevent sudden changes in ammonia pressure from causing damage to the engine and equipment.

[0027] 10. The present invention provides a temperature sensor in the ammonia supply system, which can prevent ammonia with inappropriate temperature from entering the engine and improve the quality of ammonia entering the engine.

[0028] 11. The present invention also provides pressure sensors in the nitrogen purge system and the air system, which can effectively prevent excessive gas pressure from damaging the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the ammonia supply system of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the nitrogen purge system of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the gas exhaust system of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the air system of the present invention;

[0033] Figure 5 It is a structural schematic diagram of the external frame system of the present invention;

[0034] In the figure, 101, main pipeline; 102, external pipe a; 103, ball valve; 104, fine filter; 105, interlock valve a; 106, interlock valve b; 107, ammonia pressure regulating valve; 108, external pipe b; 109, copper conductive gasket a; 110, copper conductive gasket b; 111, copper conductive gasket c; 112, copper conductive gasket d; 113, pressure sensor a; 114, pressure sensor b; 115, temperature sensor; 201, external pipe c; 202, Y-type filter a; 203, nitrogen purge pipeline a; 204, solenoid valve; 205, nitrogen purge pipeline b; 206, pipe joint a; 207, flange a; 208, flange b; 209, pressure sensor c; 301, pipe joint b; 302, exhaust pipe a; 303, explosion-proof solenoid valve a; 304, pipe joint c; 305, exhaust pipe b; 306, explosion-proof solenoid valve b; 307, summary exhaust pipe; 308, external pipe d; 309, flange c; 401, external pipe e; 402, Y-type filter b; 403, air system pipeline; 404, pipe joint d; 405, flange d; 406, flange e; 407, pressure sensor d; 501, base; 502, lower box; 503, upper box; 504, fixings; 505, gas detection alarm. DETAILED DESCRIPTION

[0035] The present invention is described in detail below through specific embodiments, but the protection scope of the present invention is not limited thereto.

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0037] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being 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 the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] Example 1

[0039] like Figure 1As shown, the ammonia supply system includes an external pipe a102, a copper conductive gasket a109, a ball valve 103, a copper conductive gasket b110, a pressure sensor a113, a fine filter 104, a pressure sensor b114, a copper conductive gasket c111, an interlock valve a105, an interlock valve b106, an ammonia pressure regulating valve 107, a copper conductive gasket d112, a temperature sensor 115, and an external pipe b108, which are sequentially arranged on the main pipeline 101. The ammonia supply system is used to provide ammonia to the transmitter. The external pipe a102 is used to connect an external ammonia supply device so that ammonia can enter the ammonia supply system from the external pipe a102. The copper conductive gasket a109, the copper conductive gasket b110, the copper conductive gasket c111, and the copper conductive gasket d112 are all used to prevent static electricity. The ball valve 103 is opened or closed manually, and needs to be opened manually before work to ensure the smooth flow of the ammonia supply system. The fine filter 104 has a filtration accuracy between 0.1 and 100 microns, which can effectively remove tiny particles and impurities in ammonia. The pressure sensor a113 and the pressure sensor b114 are respectively arranged at the inlet and outlet ends of the fine filter 104. The pressure sensor a113 is used to detect the ammonia pressure entering the ammonia supply system, and the pressure sensor b114 is used to detect the ammonia pressure after filtration and after gas exhaust. The gas exhaust is carried out by the gas exhaust system set up, and the specific structure of the gas exhaust system will be given in the subsequent description. The interlock valve a105 and the interlock valve b106 are controlled by a pilot valve to open and close the interlock valve a105 and the interlock valve b106. When no external control signal is received, the interlock valve a105 and the interlock valve b106 are in a closed state, and the interlock valve a105 and the interlock valve b106 can feedback the opening or closing state of the valve in real time. The ammonia pressure regulating valve 107 can adjust the ammonia pressure at the inlet from 5.5 to 6 bar to 0.8 to 4.5 bar at the outlet. The temperature sensor 115 can detect the temperature of the gas entering the engine and automatically alarm if it exceeds the set value. The external pipe b108 is used to connect the engine and provide ammonia to the generator.

[0040] like Figure 2As shown, the nitrogen purge system includes an external pipe c201, a flange a207, a Y-type filter a202, a flange b208, a nitrogen purge pipeline a203, a solenoid valve 204, a nitrogen purge pipeline b205, a pipe joint a206, and a pressure sensor c209 arranged on the nitrogen purge pipeline a203, which are connected in sequence. The nitrogen purge system is used to clean and purge the ammonia supply system with nitrogen before the ammonia supply, so as to prevent the ammonia from mixing with the air and reduce the explosion hazard of the entire device. The external pipe c201 is used to connect the external nitrogen supply device so that the nitrogen can enter the nitrogen purge system from the external pipe c201. The flange a207 is used to tightly connect the external pipe c201 and the Y-type filter a202, and the flange b208 is used to tightly connect the Y-type filter a202 and the nitrogen purge pipeline a203. The Y-type filter a202 is used to remove solid impurities in nitrogen. The minimum particle size that can be effectively removed by the Y-type filter a202 is within 20 μm. The pressure sensor c209 is used to detect the pressure of the filtered nitrogen. The solenoid valve 204 is used to control the opening and closing of the nitrogen purge system. The pipe joint a206 is connected between the interlock valve b106 and the ammonia pressure regulating valve 107. The pipe joint a206 is used to connect the nitrogen purge system with the ammonia supply system.

[0041] like Figure 3 As shown, the gas exhaust system includes a pipe joint b301, an exhaust pipe a302, an explosion-proof solenoid valve a303, a pipe joint c304, an exhaust pipe b305, an explosion-proof solenoid valve b306, a summary exhaust pipe 307, a flange c309, and an external pipe d308. The external pipe d308 is connected to the summary exhaust pipe 307 through the flange c309, and the summary exhaust pipe 307 is connected to the exhaust pipe a302 and the exhaust pipe b305 respectively. The exhaust pipe a302 is provided with an explosion-proof solenoid valve a303, and the other end of the exhaust pipe a302 is connected to the pipe joint b301, and the exhaust pipe b305 is provided with an explosion-proof solenoid valve b306, and the other end of the exhaust pipe b305 is connected to the pipe joint c304. The external pipe d308 is used to connect to an external ammonia receiving device so that excess ammonia can leave the ammonia supply system through the gas exhaust system. Flange c309 is used to tightly connect the centralized exhaust pipe 307 and the external pipe d308 together to prevent the leakage of ammonia. The explosion-proof solenoid valve a303 and the explosion-proof solenoid valve b306 can safely and reliably control the flow of ammonia. The pipe joint b301 is connected between the fine filter 104 and the interlock valve a105, and the pipe joint c304 is connected between the interlock valve a105 and the interlock valve b106.

[0042] like Figure 4As shown, the air system includes an external pipe e401, a flange d405, a Y-type filter b402, a flange e406, a pressure sensor d407, an air system pipeline 403, and a pipe joint d404, which are connected in sequence. The air system works through the air-assisted ammonia pressure regulating valve 107. The external pipe e401 is used to connect the external air supply device so that air can enter the air system from the external pipe e401. The flange d405 and the flange e406 are used to tightly connect the Y-type filter b402 in the air system. The Y-type filter b402 is used to remove solid impurities in the air. The minimum particle size that the Y-type filter b402 can effectively remove is within 20μm. The pressure sensor d407 is used to detect the pressure of the filtered air. The pressure sensor d407 can detect pressure changes within 0 to 10bar. The pipe joint d404 is connected to the ammonia pressure regulating valve 107 , and the pipe joint d404 is used to allow air to contact the ammonia pressure regulating valve 107 , thereby assisting the operation of the ammonia pressure regulating valve 107 .

[0043] like Figure 5 As shown, the external frame system includes a base 501, a lower box 502, a fixing 504, an upper box 503, and a gas detection alarm 505. The external frame system is used to support and protect the various internal systems. The external pipe a102, the external pipe c201, and the external pipe e401 pass through one side of the lower box 502, and the external pipe b108 and the external pipe d308 pass through the other side of the lower box 502. A variety of ribs are provided on the base 501 to fix and install the components on each system. The lower box 502 and the upper box 503 can be combined, and the lower box 502 and the upper box 503 can be firmly connected by the fixing 504. The gas detection alarm 505 is arranged on the inner side of the lower box 502. When ammonia, nitrogen or air leaks, the gas detection alarm 505 will alarm, thereby ensuring the internal safety of the system.

[0044] Example 2

[0045] This embodiment is an illustration of the working process of the ammonia fuel valve group unit equipment.

[0046] When ammonia is needed to be supplied to the engine, the solenoid valve 204 needs to be opened first to start the nitrogen purge system. Nitrogen enters the Y-type filter a202 through the external pipe c201 of the nitrogen purge system, and the impurities are filtered out in the Y-type filter a202 before entering the nitrogen purge pipeline a203. Then, nitrogen enters the ammonia supply system through the solenoid valve 204, the nitrogen purge pipeline b205 and the pipe joint a206, and the nitrogen extends to both sides between the interlock valve b106 and the ammonia pressure regulating valve 107 until all the air in the ammonia supply system is exhausted. At this time, the ammonia supply system is full of nitrogen.

[0047] At this time, the air enters the air system through the external pipe e401, and then enters the Y-type filter b402 through the flange d405, and the foreign particles are removed in the Y-type filter b402. After the foreign particles are removed, the air passes through the flange e406, the pressure sensor d407, the air system pipeline 403 in sequence, and contacts the ammonia pressure regulating valve 107 through the pipe joint d404, thereby assisting the pressure regulation work of the ammonia pressure regulating valve 107.

[0048] By manually opening the ball valve 103, ammonia enters the main pipeline 101 through the external pipe a102, and after the impurities are removed by the fine filter 104, the ammonia enters the interlock valve a105 and the interlock valve b106. After confirming that the ammonia is safe through the pressure sensor a113 and the pressure sensor b114, and that there is no problem with the air in the air system through the pressure sensor d407, the interlock valve a105 and the interlock valve b106 are opened to allow the ammonia to enter the ammonia pressure regulating valve 107. After the pressure of the ammonia is reduced in the ammonia pressure regulating valve 107, the ammonia enters the transmitter through the external pipe b108. At this time, the temperature sensor 115 can be used to further ensure that there is no abnormality in the ammonia.

[0049] When there is no need to provide ammonia to the transmitter, close the solenoid valve 204, the ball valve 103, the interlock valve a105, and the interlock valve b106, and open the explosion-proof solenoid valve a303 and the explosion-proof solenoid valve b306, so that the ammonia enters the gas exhaust system through the pipe joint b301 and the pipe joint c304, and then the ammonia enters the collective exhaust pipe 307 through the exhaust pipe a302 and the exhaust pipe b305, and is discharged from the gas exhaust system through the external pipe d308, so that the ammonia in the equipment is exhausted.

[0050] The above-described embodiments are only preferred embodiments of the present invention, but not all feasible embodiments of the present invention. For those skilled in the art, any obvious changes made thereto without departing from the principles and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. An ammonia fuel valve unit device, characterized in that: The invention comprises an ammonia supply system for supplying ammonia to a generator, and a nitrogen purge system for cleaning and purging the ammonia supply system; the ammonia supply system comprises a main pipeline (101), on which an external pipe a (102), a valve a, a fine filter (104), and an external pipe b (108) are sequentially arranged, wherein the valve a is used to control the opening and closing of the ammonia supply system; the nitrogen purge system comprises an external pipe c (201), a Y-type filter a (202), a nitrogen purge pipe a (203), a valve e, a nitrogen purge pipe b (205), and a pipe joint a (206) which are connected in sequence, wherein the pipe joint a (206) is connected between the fine filter (104) and the external pipe b (108), wherein the valve e is used to control the opening and closing of the nitrogen purge system.

2. The ammonia fuel valve unit device according to claim 1, characterized in that: The main pipeline (101) is also provided with valves b, c and d. Valve b is provided between the fine filter (104) and the pipe joint a (206) for safe isolation of ammonia gas; valve c is provided between valve b and the pipe joint a (206) for safe isolation of ammonia gas; valve d is provided between the pipe joint a (206) and the external pipe b (108) for adjusting the pressure of ammonia gas.

3. The ammonia fuel valve unit device according to claim 2, characterized in that: The valve a is a ball valve (103), the valve b is an interlocking valve a (105), the valve c is an interlocking valve b (106), the valve d is an ammonia pressure regulating valve (107), and the valve e is a solenoid valve (204).

4. The ammonia fuel valve group unit device according to claim 3, characterized in that: The invention also includes a fuel gas exhaust system for exhausting ammonia in the ammonia supply system, the fuel gas exhaust system including a pipe joint b (301), an exhaust pipe a (302), an explosion-proof electromagnetic valve a (303), a pipe joint c (304), an exhaust pipe b (305), an explosion-proof electromagnetic valve b (306), a collective exhaust pipe (307), and an external pipe d (308), wherein the pipe joint b (301) is connected between the fine filter (104) and the interlock valve a (105), and the pipe joint c (304) is connected between the fine filter (104) and the interlock valve a (105). Between the interlock valve a (105) and the interlock valve b (106), two ends of the drain pipe a (302) are respectively connected to the pipe joint b (301) and the aggregate drain pipe (307), and two ends of the drain pipe b (305) are respectively connected to the pipe joint c (304) and the aggregate drain pipe (307). The explosion-proof solenoid valve a (303) is arranged on the drain pipe a (302), the explosion-proof solenoid valve b (306) is arranged on the drain pipe b (305), and the aggregate drain pipe (307) is connected to the external pipe d (308).

5. The ammonia fuel valve group unit device according to claim 4, characterized in that: It also includes an air system for assisting the operation of the ammonia pressure regulating valve (107), the air system including an external pipe e (401), a Y-type filter b (402), an air system pipeline (403), and a pipe joint d (404) which are connected in sequence, and the pipe joint d (404) is connected to the ammonia pressure regulating valve (107).

6. The ammonia fuel valve group unit device according to claim 5, characterized in that: The invention also includes an external frame system for supporting and protecting, wherein the external frame system includes a base (501), a lower box (502), an upper box (503), a fixing member (504), and a gas detection alarm (505). The lower box (502) is arranged on the base (501), the upper box (503) is arranged above the lower box (502) and can be combined with the lower box (502), the fixing member (504) is used to connect and fix the upper box (503) and the lower box (502), the gas detection alarm (505) is arranged on the inner side of the lower box (502), the external pipe a (102), the external pipe c (201), and the external pipe e (401) pass through one side of the lower box (502), and the external pipe b (108) and the external pipe d (308) pass through the other side of the lower box (502).

7. The ammonia fuel valve unit device according to claim 3, characterized in that: The ammonia supply system further comprises a copper conductive gasket a (109), a copper conductive gasket b (110), a copper conductive gasket c (111), a copper conductive gasket d (112), a pressure sensor a (113), a pressure sensor b (114), and a temperature sensor (115). The copper conductive gasket a (109) is arranged between the external pipe a (102) and the ball valve (103), the copper conductive gasket b (110) is arranged between the ball valve (103) and the fine filter (104), and the copper conductive gasket c ( The copper conductive gasket d (112) is arranged between the ammonia pressure regulating valve (107) and the external pipe b (108), the pressure sensor a (113) is arranged between the copper conductive gasket b (110) and the fine filter (104), the pressure sensor b (114) is arranged between the fine filter (104) and the copper conductive gasket c (111), and the temperature sensor (115) is arranged between the copper conductive gasket d (112) and the external pipe b (108).

8. The ammonia fuel valve group unit device according to claim 3, characterized in that: The nitrogen purge system further comprises a flange a (207), a flange b (208), and a pressure sensor c (209), wherein the flange a (207) is used to connect the external pipe c (201) and the Y-type filter a (202), the flange b (208) is used to connect the Y-type filter a (202) and the nitrogen purge pipeline a (203), and the pressure sensor c (209) is arranged on the nitrogen purge pipeline a (203).

9. The ammonia fuel valve group unit device according to claim 4, characterized in that: The gas exhaust system further comprises a flange c (309), and the flange c (309) is used to connect the collective exhaust pipe (307) and the external pipe d (308).

10. The ammonia fuel valve unit device according to claim 5, characterized in that: The air system further comprises a flange d (405), a flange e (406), and a pressure sensor d (407). The flange d (405) is used to connect the external pipe e (401) and the Y-type filter b (402). The flange e (406) is used to connect the Y-type filter b (402) and the air system pipeline (403). The pressure sensor d (407) is arranged on the air system pipeline (403).

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