Pure ammonia fuel supply system for land traffic equipment

Abstract

The utility model relates to the technical field of new energy, in particular to a pure ammonia fuel supply system for land traffic equipment. The pure ammonia fuel supply system comprises a liquid ammonia temperature adjusting device, a liquid ammonia evaporation device, an ammonia gas cracking device and a gas storage adjusting device, and the ammonia gas cracking device comprises a first plasma ignition burner and a cracking heat exchanger. Due to the fact that the first plasma ignition combustor is arranged in the ammonia gas cracking device, rapid ignition and stable and continuous combustion of pure ammonia fuel are achieved, the working stability of land traffic equipment using the pure ammonia fuel is further improved, meanwhile, due to the fact that the pure ammonia fuel is used, greenhouse gas emission is reduced, and the air quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and in particular to a pure ammonia fuel supply system for land transportation equipment. Background Art

[0002] With the increasing attention paid to environmental protection and energy transformation around the world, the development of efficient, clean, and renewable energy utilization methods has become an important research direction in the industrial field. In recent years, ammonia-blended fuels have gradually been applied to the transportation industry of land transportation equipment such as heavy trucks and mining trucks at home and abroad. However, due to the poor combustion characteristics of ammonia as an energy fuel, the laminar combustion velocity and calorific value are both low, while the energy required for ignition is high, the ignition temperature is high, the explosion limit is narrow, and it is not easy to ignite and continue to burn. At present, the application of ammonia-blended fuels to land transportation equipment has not been truly realized in engineering. The application of ammonia-blended fuels to land transportation equipment is still in the test prototype stage, and the blending ratio is low. It is more complicated to use two fuel supply systems at the same time.

[0003] Therefore, there is an urgent need for a pure ammonia fuel supply system for land transportation equipment to achieve rapid ignition and stable and continuous combustion of pure ammonia fuel, and to improve the working stability of land transportation equipment when using pure ammonia fuel. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a pure ammonia fuel supply system for land transportation equipment, which solves the technical problem that pure ammonia fuel is difficult to ignite and continuously burn when ammonia fuel is used in land transportation equipment working conditions.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] The utility model provides a pure ammonia fuel supply system for land transportation equipment, including a liquid ammonia temperature regulating device, a liquid ammonia evaporating device, an ammonia cracking device and a gas storage regulating device, wherein the ammonia cracking device includes a first plasma ignition burner and a cracking heat exchanger; the liquid outlet of the liquid ammonia temperature regulating device is connected to the liquid inlet of the liquid ammonia evaporating device to output the temperature-regulated liquid ammonia to the liquid ammonia evaporating device; the gas outlet of the liquid ammonia evaporating device can be selectively connected to the first plasma ignition burner, the cracking heat exchanger and the gas storage regulating device to heat the liquid ammonia to gasify and form Ammonia can be selectively output to any one or more of the first plasma ignition burner, the cracking heat exchanger and the gas storage regulating device; the first plasma ignition burner is used to heat the cracking heat exchanger, and the gas outlet of the cracking heat exchanger is connected to the gas inlet of the gas storage regulating device to crack the ammonia to form a mixed gas of hydrogen and nitrogen and output it to the gas storage regulating device; the gas outlet of the gas storage regulating device is used to be connected to land transportation equipment, and the gas storage regulating device can selectively output the mixed gas of hydrogen and nitrogen or the mixed gas of ammonia, hydrogen and nitrogen to the land transportation equipment.

[0009] Preferably, the first plasma ignition burner includes an igniter, an injection box, an ammonia supply unit and a diversion unit, the front side of the injection box forms a combustion zone, and the gas outlet of the liquid ammonia evaporation device is connected to the igniter and the ammonia supply unit of the first plasma ignition burner; the combustion zone of the first plasma ignition burner is used to heat the cracking heat exchanger; the front end of the igniter passes through the injection box and extends to the front side of the injection box, the front end of the igniter forms an ignition zone, and the ignition zone is connected to the combustion zone; the inner cavity of the igniter forms a combustion chamber, and the outlet end of the ammonia supply unit is connected to the inner cavity of the injection box; the diversion unit includes an injection module and a heat recovery channel, the injection module is connected to the front side of the injection box and is connected to the inner cavity of the injection box, the ignition zone can preheat the injection module and ignite the ammonia output by the injection module to the combustion zone; the heat recovery channel connects the inner cavity of the injection box and the combustion chamber, so that the ammonia in the inner cavity of the injection box flows back to the combustion chamber and is ignited.

[0010] Preferably, the liquid ammonia evaporation device includes an evaporator, a circulating water component and an ammonia pressure-stabilizing tank; the water inlet of the evaporator is connected to the water outlet of the circulating water component, the liquid inlet of the evaporator is connected to the liquid outlet of the liquid ammonia temperature control supply device, the gas outlet of the evaporator is connected to the gas inlet of the ammonia pressure-stabilizing tank, and the first gas outlet, the second gas outlet and the third gas outlet of the ammonia pressure-stabilizing tank are respectively connected to the first plasma ignition burner, the cracking heat exchanger and the gas storage regulating device; the circulating water component is used to exchange heat with the evaporator to vaporize the liquid ammonia in the evaporator to form ammonia gas that enters the ammonia pressure-stabilizing tank.

[0011] Preferably, the liquid ammonia evaporation device also includes a second plasma ignition burner; the fourth gas outlet of the ammonia pressure stabilizing tank is connected to the second plasma ignition burner, and the second plasma ignition burner is used to heat the room temperature ammonia to form high-temperature ammonia, and the high-temperature ammonia can selectively enter the land transportation equipment.

[0012] Preferably, it also includes an ignition and combustion regulating device; the first gas outlet of the ammonia pressure regulating tank is connected to the first plasma ignition burner through the ignition and combustion regulating device; the ignition and combustion regulating device is used to regulate the gas supply flow of ammonia entering the first plasma ignition burner.

[0013] Preferably, the gas storage and regulating device includes a gas storage tank and a gas regulating device; the gas outlet of the cracking heat exchanger is connected to the gas inlet of the gas storage tank, the first gas outlet and the second gas outlet of the gas storage tank are respectively selectively connected to the first gas inlet of the gas regulating device and the land transportation equipment, the second gas outlet of the ammonia pressure stabilizing tank is connected to the second gas inlet of the gas regulating device, and the first gas outlet of the gas regulating device is selectively connected to the land transportation equipment.

[0014] Preferably, two hydrogen concentration detection devices are also included; the third gas outlet of the gas tank is connected to the gas inlet of one hydrogen concentration detection device, the gas outlet of one hydrogen concentration detection device is connected to the gas inlet of the first plasma ignition burner, and the one hydrogen concentration detection device is used to detect the concentration of hydrogen in the gas tank; the second gas outlet of the gas regulating device is connected to the gas inlet of another hydrogen concentration detection device, the gas outlet of another hydrogen concentration detection device is connected to the gas inlet of the first plasma ignition burner, and the other hydrogen concentration detection device is used to detect the concentration of hydrogen in the gas regulating device.

[0015] Preferably, the liquid ammonia temperature control device comprises a liquid storage tank containing liquid ammonia and a temperature control room; the liquid storage tank is arranged in the temperature control room, and the liquid outlet of the liquid storage tank is connected to the liquid inlet of the evaporator to provide liquid ammonia for the evaporator.

[0016] Preferably, the liquid ammonia temperature control device further includes a first filter, and the liquid outlet of the liquid storage tank is connected to the liquid inlet of the evaporator through the filter; the ammonia cracking device further includes a second filter, and the gas outlet of the cracking heat exchanger is connected to the gas inlet of the gas storage regulating device through the second filter.

[0017] Preferably, the land transportation equipment is an internal combustion engine generator set and / or a gas turbine generator set for land transportation.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are:

[0020] The utility model discloses a pure ammonia fuel supply system for land transportation equipment, comprising a liquid ammonia temperature regulating device, a liquid ammonia evaporating device, an ammonia cracking device and a gas storage regulating device, wherein the ammonia cracking device comprises a first plasma ignition burner and a cracking heat exchanger, wherein the liquid outlet of the liquid ammonia temperature regulating device is connected with the liquid inlet of the liquid ammonia evaporating device to output the temperature-regulated liquid ammonia to the liquid ammonia evaporating device, and the liquid ammonia evaporating device can be selectively connected with the first plasma ignition burner, the cracking heat exchanger and the gas storage regulating device to heat and gasify the liquid ammonia to form ammonia gas. The output can be selectively output to a first plasma ignition burner, a cracking heat exchanger and a gas storage regulating device, the first plasma ignition burner is used to heat the cracking heat exchanger, the gas outlet of the cracking heat exchanger is connected with the gas inlet of the gas storage regulating device to crack the ammonia to form a mixture of hydrogen and nitrogen to output to the gas storage regulating device, the gas outlet of the gas storage regulating device is used to be connected with land transportation equipment, and the gas storage regulating device can selectively output the mixture of hydrogen and nitrogen or the mixture of ammonia, hydrogen and nitrogen to the land transportation equipment.

[0021] The pure ammonia fuel supply system for land transportation equipment has a first plasma ignition burner arranged in the ammonia cracking device to achieve rapid ignition and stable and continuous combustion of pure ammonia fuel, thereby improving the working stability of land transportation equipment when using pure ammonia fuel. At the same time, the use of pure ammonia fuel reduces greenhouse gas emissions and improves air quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the flow chart of the pure ammonia fuel supply system for land transportation equipment of the utility model;

[0023] Figure 2 for Figure 1 A cross-sectional schematic diagram of a first plasma ignition burner in FIG.

[0024] Figure 3 for Figure 1 A schematic diagram of the process flow of the ignition and combustion regulating device;

[0025] Figure 4 It is a structural schematic diagram of a hydrogen concentration detection device;

[0026] Figure 5 for Figure 4 Schematic cross-sectional view of ;

[0027] Figure 6 for Figure 5 The structural diagram of the middle regulating component;

[0028] Figure 7 It is a cross-sectional schematic diagram of the throttling component.

[0029] [Description of Reference Numerals]

[0030] 1: liquid storage tank; 2: temperature-controlled room; 3: evaporator; 4: ammonia pressure-stabilizing tank; 5: loop; 6: circulating water pump; 7: cab air conditioner; 8: first filter; 9: first plasma ignition burner; 91: igniter; 92: injection box; 93: ammonia supply unit; 94: diversion unit; 941: injection module; 942: heat recovery channel; 10: cracking heat exchanger; 11: second plasma ignition burner; 12: ignition combustion regulating device; 121: first air supply unit; 1211: second connecting pipeline; 1212: second valve; 1213: buffer tank; 1214: exhaust fan; 1215: third valve; 122: second supply Gas assembly; 1221: primary gas supply unit; 1222: secondary gas supply unit; 122n: n-stage gas supply unit; 122a: first connecting pipeline; 122b: first valve; 13: gas storage tank; 14: gas regulating device; 15: hydrogen concentration detection device; 151: regulating assembly; 1511: first throttling pipeline; 1512: first throttling orifice plate; 1513: throttling hole; 152: cooling assembly; 1521: cooling box; 1522: cooling pipe; 153: hydrogen concentration detection assembly; 1531: buffer box; 1532: hydrogen detector; 16: second filter; 17: internal combustion engine generator set; 18: gas turbine generator set;

[0031] G: throttling assembly; G1: second throttling pipe; G2: second throttling orifice. DETAILED DESCRIPTION

[0032] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0033] like Figure 1 As shown, this embodiment provides a pure ammonia fuel supply system for land transportation equipment, which includes a liquid ammonia temperature control device, a liquid ammonia evaporation device, an ammonia cracking device and a gas storage adjustment device, wherein the ammonia cracking device includes a first plasma ignition burner 9 and a cracking heat exchanger 10. The land transportation equipment is an internal combustion engine generator set 17 and / or a gas turbine generator set 18 for land transportation.

[0034] The liquid ammonia temperature control supply device includes a liquid storage tank 1 containing liquid ammonia, a temperature control room 2 and a first filter 8. The liquid storage tank 1 is arranged in the temperature control room 2. The liquid outlet of the liquid storage tank 1 is connected to the liquid inlet of the liquid ammonia evaporation device through the first filter 8 to provide the liquid ammonia evaporation device with temperature-controlled liquid ammonia. The temperature control room 2 provides a temperature-controlled environment of 0°C to 20°C for the liquid storage tank 1, ensuring that the liquid ammonia in the liquid storage tank 1 is at a constant temperature, ensuring that the system pressure is at a stable value of 0.4 to 0.8 MPa, and improving the reliability of the system.

[0035] The gas outlet of the liquid ammonia evaporation device can be selectively connected to the first plasma ignition burner 9, the cracking heat exchanger 10 and the gas storage regulating device to heat the liquid ammonia to gasify it to form ammonia gas and can be selectively output to any one or more of the first plasma ignition burner 9, the cracking heat exchanger 10 and the gas storage regulating device.

[0036] The first plasma ignition burner 9 is used to heat the cracking heat exchanger 10. The gas outlet of the cracking heat exchanger 10 is connected to the gas inlet of the gas storage regulating device to crack the ammonia to form a mixed gas of hydrogen and nitrogen and output it to the gas storage regulating device. The gas outlet of the gas storage regulating device is used to communicate with land transportation equipment. The gas storage regulating device can selectively output the mixed gas of hydrogen and nitrogen or the mixed gas of ammonia, hydrogen and nitrogen to the land transportation equipment.

[0037] Since the first plasma ignition burner 9 is arranged in the ammonia cracking device, the rapid ignition and stable and continuous combustion of the pure ammonia fuel can be achieved, thereby improving the working stability of land transportation equipment when using pure ammonia fuel. At the same time, the use of pure ammonia fuel reduces greenhouse gas emissions and improves air quality.

[0038] like Figure 2 As shown, the first plasma ignition burner 9 includes an igniter 91, an injection box 92, an ammonia supply unit 93 and a diversion unit 94. The front side of the injection box 92 forms a combustion zone. The gas outlet of the liquid ammonia evaporation device is connected to the igniter 91 and the ammonia supply unit of the first plasma ignition burner 9. The combustion zone of the first plasma ignition burner 9 is used to heat the cracking heat exchanger 10. The front end of the igniter 91 passes through the injection box 92 and extends to the front side of the injection box 92. The front end of the igniter 91 forms an ignition zone, and the ignition zone is connected to the combustion zone. The inner cavity of the igniter 91 forms a combustion cavity, the outlet end of the ammonia supply unit 93 is connected to the inner cavity of the injection box 92, the diversion unit 94 includes an injection module 941 and a heat recovery channel 942, the injection module 941 is connected to the front side of the injection box 92 and is connected to the inner cavity of the injection box 92, the ignition zone can preheat the injection module 941 and ignite the ammonia output by the injection module 941 to the combustion zone, and the heat recovery channel 942 connects the inner cavity of the injection box 92 and the combustion cavity, so that the ammonia in the inner cavity of the injection box 92 flows back to the combustion cavity and is ignited.

[0039] In this embodiment, a combustion chamber is formed inside the igniter 91. This chamber is where the initial combustion of ammonia occurs. The front end of the igniter 91 is designed as an open structure that penetrates the injection box 92, so that the high-temperature flame and heat generated by the plasma ignition can be directly radiated to the preheating zone, which is convenient for heating the ammonia in the injection box 92, and under the flow of the burning mixed gas, an ignition zone can also be formed on the front side of the injection box 92 to ignite the high-temperature ammonia output by the injection module 941. At the same time, the burning mixed gas output by the combustion chamber can also preheat the injection module 941, thereby increasing the temperature of the ammonia output by the injection module 941, which is conducive to ensuring that the ammonia is ignited.

[0040] The injection module 941 and the heat recovery channel 942 divide the ammonia into two output directions. Most of the ammonia is output through the injection module 941 and can be ignited by the igniter 91, and a small part is output to the inside of the igniter 91 through the heat recovery channel 942. Before the igniter 91 stops working, this small part of the ammonia can be ignited and can remain in the combustion chamber for a period of time after ignition. In this way, even if the igniter 91 stops working, the ammonia output by the heat recovery channel 942 can still be ignited.

[0041] The igniter 91 plays an ignition role in the initial stage of combustion. When the ammonia in the injection box 92 can reach the temperature of autonomous combustion, it still maintains self-sustaining combustion after the plasma ignition burner is turned off, thereby ensuring the reliability of the use of the plasma ignition burner. The igniter 91 does not need to remain in working condition all the time, thereby reducing the energy consumption of the plasma ignition burner.

[0042] The liquid ammonia evaporation device includes an evaporator 3, a circulating water component, an ammonia pressure regulating tank 4 and a second plasma ignition burner 11. The water inlet of the evaporator 3 is connected to the water outlet of the circulating water component, the liquid inlet of the evaporator 3 is connected to the liquid outlet of the liquid ammonia temperature regulating supply device, the gas outlet of the evaporator 3 is connected to the gas inlet of the ammonia pressure regulating tank 4, the first gas outlet, the second gas outlet, the third gas outlet and the fourth gas outlet of the ammonia pressure regulating tank 4 are respectively connected to the first plasma ignition burner 9, the cracking heat exchanger 10, the gas storage regulating device and the second plasma ignition burner 11. The circulating water component is used to exchange heat with the evaporator 3 to vaporize the liquid ammonia in the evaporator 3 to form ammonia gas entering the ammonia pressure regulating tank 4. The second plasma ignition burner 11 is used to heat the room temperature ammonia gas to form high temperature ammonia gas, and the high temperature ammonia gas can selectively enter the land transportation equipment.

[0043] The circulating water component includes a loop 5, a circulating water pump 6 and a cab air conditioner 7. The circulating water pump 6, the evaporator 3 and the cab air conditioner 7 are arranged in series on the loop 5. The water outlet of the cab air conditioner 7 is connected with the water inlet of the evaporator 3, and the water outlet of the evaporator 3 is connected with the water inlet of the cab air conditioner 7. The cooling water in the loop 5 is heat-exchanged through the cab air conditioner 7 to form hot water. The hot water passes through the circulating water pump 6 and then enters the evaporator 3 for heat exchange to form cooling water. Liquid ammonia enters the evaporator 3. The evaporator 3 vaporizes the liquid ammonia through heat exchange to form ammonia gas, which enters the ammonia pressure-stabilizing tank 4.

[0044] In this embodiment, the cooling water is converted into high-temperature water after heat exchange in the cab air conditioner 7. The high-temperature water is converted into cooling water after heat exchange in the evaporator 3 and returns to the cab air conditioner 7 for heat exchange again, thereby making full use of the cooling and heat dissipation losses and improving the comprehensive efficiency and economy of the module.

[0045] In order to avoid the problem of insufficient combustion and leakage caused by a large flow of ammonia gas entering the first plasma ignition burner 9, and thus avoid environmental pollution, the pure ammonia fuel supply system for land transportation equipment also includes an ignition and combustion regulating device 12, through which the first gas outlet of the ammonia pressure regulating tank 4 is connected to the first plasma ignition burner 9, and the ignition and combustion regulating device 12 is used to regulate the gas supply flow of ammonia gas entering the first plasma ignition burner 9.

[0046] like Figure 3 As shown, the ignition and combustion adjustment device 12 includes a first air supply unit 121 and a second air supply assembly 122, and the second air supply assembly 122 includes a first-level air supply unit 1221, a second-level air supply unit 1222 to an n-level air supply unit 122n connected in parallel, wherein n is an integer and is greater than or equal to, and in the present embodiment, n is preferably 3.

[0047] Since the second air supply assembly 122 includes multiple stages of air supply units in parallel and the air supply flow rate decreases successively, when it is necessary to increase the combustion flow rate and the heating amount, the low-level air supply unit can be opened to realize the "shifting" regulation of the ammonia flow rate entering the ammonia supply unit 93.

[0048] The first gas outlet of the ammonia pressure stabilizing tank 4 is optionally connected to the first gas supply unit 121 and the gas inlet of each stage of the gas supply unit to provide ammonia therefor, that is, the ammonia in the first gas outlet of the ammonia pressure stabilizing tank 4 is divided into two paths, one path provides ignition and combustion for the igniter 91 in the first plasma ignition burner 9, and the other path provides fuel for continuous combustion of the injection box 92 through the ammonia supply unit 93.

[0049] That is, the gas outlet of the first gas supply unit 121 is used to communicate with the igniter 91 of the first plasma ignition burner 9, and the gas outlet of each level of the gas supply unit is used to communicate with the ammonia supply unit 93 of the first plasma ignition burner 9, and the secondary gas supply unit 1222 to the n-level gas supply unit 122n and the first gas supply unit 121 are all provided with a throttling component G to adjust the gas supply flow. Since the first gas supply unit 121 adjusts the gas flow by providing the throttling component G and can thus achieve a small flow adjustment of the gas, the flow entering the first plasma ignition burner 9 can be accurately controlled, thereby improving the success rate of ignition of the igniter 91 in the first plasma ignition burner 9.

[0050] like Figure 3 As shown, each level of the gas supply unit includes a first connecting pipeline 122a and a first valve 122b, and the first valve 122b is arranged on the first connecting pipeline 122a, wherein the air inlet of the first connecting pipeline 122a is connected to the first air outlet of the ammonia pressure stabilizing tank 4, and the air outlet of the first connecting pipeline 122a is connected to the ammonia supply unit 93.

[0051] In the secondary air supply unit 1222 to the n-stage air supply unit 122n: the throttling component G and the first valve 122b are connected in series on the first connecting pipeline 122a, and the air supply flow rate in the throttling component G decreases successively from the secondary air supply unit 1222 to the n-stage air supply unit 122n.

[0052] like Figure 7 As shown, in the secondary air supply unit 1222 to the n-stage air supply unit 122n and the first air supply unit 121: the throttling assembly G includes a plurality of second throttling pipes G1, and a second throttling orifice plate G2 is provided between two adjacent second throttling pipes G1 and at the outer ends of the second throttling pipes G1 on both sides, and the number of the second throttling pipes G1 decreases successively from the secondary air supply unit 1222 to the n-stage air supply unit 122n.

[0053] Preferably, the first air supply unit 121 includes a second connecting pipeline 1211, a second valve 1212, a third valve 1215, a buffer tank 1213 and an exhaust fan 1214, the second valve 1212 and the buffer tank 1213 are both arranged on the second connecting pipeline 1211, wherein the air inlet of the second connecting pipeline 1211 is connected to the second air outlet of the ammonia pressure-stabilizing tank 4, the air outlet of the second connecting pipeline 1211 is connected to the igniter 91, and the throttling assembly G in the first air supply unit 121 and the second valve 1212 are connected in series on the second connecting pipeline 1211. The air outlet of the throttling assembly G in the first air supply unit 121 is communicated with the first air inlet of the buffer tank 1213, the air outlet of the exhaust fan 1214 is communicated with the second air inlet of the buffer tank 1213, the air outlet of the buffer tank 1213 is communicated with the igniter 91, and the third valve 1215 is arranged between the exhaust fan 1214 and the buffer tank 1213. By arranging the buffer tank 1213 and the exhaust fan 1214, air is drawn in before starting the igniter 91, and the air is ionized in advance by taking advantage of the good air ionization effect of the igniter 91, so as to ensure that the ammonia can be ignited in time, and further improve the success rate and reliability of ignition.

[0054] When the ignition and combustion regulating device 12 is working, the third valve 1215 and the exhaust fan 1214 are first opened to draw air into the buffer tank 1213, and the igniter 91 in the first plasma ignition burner 9 is connected. The igniter 91 ionizes the air to form high-temperature ionized air. The third valve 1215 is closed, and the second valve 1212 is opened. The ammonia enters the buffer tank 1213 through the throttling component G in the first air supply unit 121, and then enters the igniter 91 to mix with the high-temperature ionized air to ignite and burn. After the igniter 91 burns, the first valve 122b in the n-stage air supply unit 122n is opened, and the ammonia enters the ammonia supply unit 93 after adjusting the air supply flow through the throttling component G in the n-stage air supply unit 122n. The igniter 91 ignites and burns the ammonia in the ammonia supply unit 93. After the ammonia in the ammonia supply unit 93 burns stably, the first valve 122b in the n-stage air supply unit 122n and the power supply of the igniter 91 are closed. When the combustion heat needs to be increased, the first valve 122b in the lower-level gas supply unit is opened. After the combustion flame of the ammonia supply unit 93 is stabilized, the first valve 122b in the lower-level gas supply unit is opened to realize high-fire operation of the injection box 92. At the same time, gear shifting and adjustment can be performed according to the combustion conditions of the subsequent burner.

[0055] In this embodiment, by setting a throttling component G in the ignition combustion regulating device 12, throttling and reducing pressure are performed first, so that low-flow rapid start of the ignition air intake of the igniter 91 in the first plasma ignition burner 9 and the combustion air intake of the injection box 92 is achieved. Furthermore, when the fuel of the first plasma ignition burner 9 is ammonia, the ignition combustion regulating device 12 can be used to achieve rapid ignition and graded combustion of ammonia, and effectively control the combustion temperature and heat.

[0056] The gas storage and regulating device includes a gas storage tank 13, a gas regulating device 14 and a second filter 16. The gas outlet of the cracking heat exchanger 10 is connected to the gas inlet of the gas storage tank 13 through the second filter 16. The first gas outlet and the second gas outlet of the gas storage tank 13 are selectively connected to the first gas inlet of the gas regulating device 14 and the land transportation equipment respectively. The second gas outlet of the ammonia pressure stabilizing tank 4 is connected to the second gas inlet of the gas regulating device 14, and the first gas outlet of the gas regulating device 14 is selectively connected to the land transportation equipment.

[0057] Since a cooling pipeline is provided in the gas regulating device 14, the water inlet of the cooling pipeline is connected to the cold coal water, thereby cooling the gas in the gas regulating device 14, thereby adjusting the temperature of the mixed gas. At the same time, since the second gas outlet of the ammonia pressure regulating tank 4 is connected to the second gas inlet of the gas regulating device 14, ammonia can be introduced according to actual needs to adjust the concentration of hydrogen in the mixed gas, and the hydrogen concentration ratio can be adjusted from 0 to 75%, meeting the power generation needs of the internal combustion unit and the gas turbine unit.

[0058] In order to detect the hydrogen concentration, two hydrogen concentration detection devices 15 are also included. The third gas outlet of the gas tank 13 is connected to the gas inlet of one hydrogen concentration detection device 15, and the gas outlet of one hydrogen concentration detection device 15 is connected to the gas inlet of the first plasma ignition burner 9. One hydrogen concentration detection device 15 is used to detect the concentration of hydrogen in the gas tank 13. The second gas outlet of the gas regulating device 14 is connected to the gas inlet of another hydrogen concentration detection device 15, and the gas outlet of another hydrogen concentration detection device 15 is connected to the gas inlet of the first plasma ignition burner 9. The other hydrogen concentration detection device 15 is used to detect the concentration of hydrogen in the gas regulating device 14.

[0059] like Figure 4 and Figure 5 As shown, the hydrogen concentration detection device 15 includes a regulating component 151, a cooling component 152 and a hydrogen concentration detection component 153 which are connected in sequence. The regulating component 151 is used to reduce the pressure of the incoming gas, the cooling component 152 is used to cool the gas after the pressure reduction, and the hydrogen concentration detection component 153 is used to detect the hydrogen content of the gas after the temperature is reduced. The gas outlet of the hydrogen concentration detection component 153 is connected to the gas inlet of the first plasma ignition burner 9.

[0060] The high-temperature and high-pressure gas is cooled and reduced in pressure by the regulating component 151 and the cooling component 152, and then the gas is detected for hydrogen by the hydrogen concentration detection component 153. At the same time, since the gas outlet of the hydrogen concentration detection component 153 is connected to the air inlet of the first plasma ignition burner 9, after the gas is detected, the detected gas is absorbed by the first plasma ignition burner 9 to avoid environmental pollution.

[0061] like Figure 6 As shown, the regulating assembly 151 includes a plurality of first throttling pipes 1511 connected in series, and first throttling orifice plates 1512 are provided between two adjacent first throttling pipes 1511 and at the outer ends of the first throttling pipes 1511 at both ends. The first throttling orifice plate 1512 at the head end of the regulating assembly 151 is communicated with the gas outlet of the gas storage tank 13, and the first throttling orifice plate 1512 at the tail end of the regulating assembly 151 is communicated with the cooling assembly 152. The first throttling orifice plate 1512 is provided with at least one throttling hole 1513. The first throttling pipe 1511 is connected to the first throttling orifice plate 1512 by welding.

[0062] The cooling assembly 152 includes a cooling box 1521 and a cooling pipe 1522. The cooling pipe 1522 is disposed in the cooling box 1521. The inlet and outlet of the cooling pipe 1522 extend out of the cooling box 1521 and communicate with a cold source. To increase the cooling effect in the cooling box 1521, the cooling pipe 1522 is spirally shaped to increase the cooling path of the cooling pipe 1522 within a certain space.

[0063] The hydrogen concentration detection component 153 includes a buffer box 1531 and a hydrogen detector 1532. The detection end of the hydrogen detector 1532 extends into the buffer box 1531 to detect the hydrogen content of the gas after pressure reduction and temperature reduction in the buffer box 1531. The first throttle orifice plate 1512 at the tail end of the regulating component 151 is connected to the first end of the cooling box 1521, the first end of the buffer box 1531 is connected to the second end of the cooling box 1521, and the second end of the buffer box 1531 is connected to the air inlet of the first plasma ignition burner 9.

[0064] During operation, the temperature in the conditioning room 2 can be adjusted at 0℃~20℃, and the pressure in the liquid storage tank 1 is maintained at 0.4~0.8MPa. The valve on the liquid storage tank 1 is opened, and the liquid ammonia comes out of the liquid storage tank 1 and enters the evaporator 3 after filtering impurities through the first filter 8. The liquid ammonia is heated and vaporized to form ammonia gas. The cooling water releases heat and cools and enters the refrigeration air conditioner for refrigeration in the cab. The vaporized ammonia gas enters the ammonia pressure regulating tank 4, and is divided into four paths, which respectively pass through the valves to enter the first plasma ignition burner 9, the cracking heat exchanger 10, the gas storage regulating device and the second plasma ignition burner 11.

[0065] Ammonia enters the first plasma ignition burner 9 through the ignition and combustion regulating unit, and enters the igniter 91 and the injection box 92 for combustion through the "shift-type" flow regulation. The high-temperature flue gas after combustion heats the catalyst of the heat exchange tube in the cracking heat exchanger 10. The ammonia in the cracking heat exchanger 10 cracks into hydrogen and nitrogen under the environment of the high-temperature catalyst. The cracked gas enters the storage tank. After opening the hydrogen concentration detection device 15 to collect the cracked gas in the storage tank and detect the hydrogen concentration, it enters the plasma ignition burner through the ignition and combustion regulating unit for combustion.

[0066] If the hydrogen concentration in the storage tank meets the requirements, it can directly enter the internal combustion engine generator set 17 or gas turbine generator set 18 for land transportation to burn and work, and generate electricity or drive the transmission device through the generator set, and can also charge the battery pack through the generator set. If the hydrogen concentration in the storage tank is too high or the temperature is too high and does not meet the operation requirements of the internal combustion engine set or gas turbine set, the cracked gas enters the gas regulating device 14, and the pure ammonia in the ammonia pressure regulating tank 4 also enters the gas regulating device 14 for mixing, and after cooling and cooling to reach the required gas, it enters the internal combustion engine generator set 17 and / or gas turbine generator set 18 to burn and work, and then generate electricity or drive the transmission device.

[0067] On the other hand, for the gas turbine generator set 18, high-temperature pure ammonia can be directly used to enter the gas turbine combustion chamber for combustion. The ammonia in the fourth gas outlet of the ammonia pressure regulating tank 4 is divided into three branches and respectively enters the igniter 91, the injection box 92 and the temporary storage tank of the second plasma ignition burner 11. On the one hand, the ammonia enters the second plasma ignition burner 11 to heat the ammonia in the other temporary storage tank to form high-temperature ammonia, which enters the gas turbine generator set 18, and generates electricity or drives the transmission device through the gas turbine generator set 18, or charges the battery pack through the gas turbine generator set 18, thereby meeting the needs of users of different working conditions of the internal combustion engine generator set 17 and the gas turbine generator set 18, saving energy, and improving the comprehensive energy utilization rate of the system.

[0068] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pure ammonia fuel supply system for land transportation equipment, characterized in that: It comprises a liquid ammonia temperature regulating device, a liquid ammonia evaporating device, an ammonia cracking device and a gas storage regulating device, wherein the ammonia cracking device comprises a first plasma ignition burner (9) and a cracking heat exchanger (10); The liquid outlet of the liquid ammonia temperature regulating device is connected to the liquid inlet of the liquid ammonia evaporating device to output the temperature-regulated liquid ammonia to the liquid ammonia evaporating device; The gas outlet of the liquid ammonia evaporation device can be selectively connected to the first plasma ignition burner (9), the cracking heat exchanger (10) and the gas storage regulating device to heat the liquid ammonia to gasify it to form ammonia gas and selectively output it to any one or more of the first plasma ignition burner (9), the cracking heat exchanger (10) and the gas storage regulating device; The first plasma ignition burner (9) is used to heat the cracking heat exchanger (10), and the gas outlet of the cracking heat exchanger (10) is connected to the gas inlet of the gas storage regulating device to crack the ammonia to form a mixed gas of hydrogen and nitrogen and output it to the gas storage regulating device; The gas outlet of the gas storage and regulating device is used to communicate with land transportation equipment, and the gas storage and regulating device can selectively output a mixture of hydrogen and nitrogen or a mixture of ammonia, hydrogen and nitrogen to the land transportation equipment.

2. The pure ammonia fuel supply system for land transportation equipment according to claim 1, characterized in that: The first plasma ignition burner (9) comprises an igniter (91), an injection box (92), an ammonia supply unit (93) and a diversion unit (94); the front side of the injection box (92) forms a combustion zone; the gas outlet of the liquid ammonia evaporation device is connected to the igniter (91) and the ammonia supply unit (93) of the first plasma ignition burner (9); The combustion zone of the first plasma ignition burner (9) is used to heat the cracking heat exchanger (10); The front end of the igniter (91) passes through the injection box (92) and extends to the front side of the injection box (92), and the front end of the igniter (91) forms an ignition zone, which is connected to the combustion zone; The inner cavity of the igniter (91) forms a combustion chamber, and the outlet end of the ammonia supply unit (93) is connected to the inner cavity of the injection box (92); The flow distribution unit (94) comprises an injection module (941) and a heat recovery channel (942); the injection module (941) is connected to the front side of the injection box (92) and communicates with the inner cavity of the injection box (92); the ignition zone is capable of preheating the injection module (941) and igniting the ammonia gas output by the injection module (941) to the combustion zone; The heat recovery channel (942) connects the inner cavity of the injection box (92) and the combustion chamber, so that the ammonia gas in the inner cavity of the injection box (92) flows back to the combustion chamber and is ignited.

3. The pure ammonia fuel supply system for land transportation equipment according to claim 1, characterized in that: The liquid ammonia evaporation device comprises an evaporator (3), a circulating water component and an ammonia pressure stabilizing tank (4); The water inlet of the evaporator (3) is communicated with the water outlet of the circulating water component, the liquid inlet of the evaporator (3) is communicated with the liquid outlet of the liquid ammonia temperature regulating supply device, the gas outlet of the evaporator (3) is communicated with the gas inlet of the ammonia pressure regulating tank (4), and the first gas outlet, the second gas outlet and the third gas outlet of the ammonia pressure regulating tank (4) are respectively connected to the first plasma ignition burner (9), the cracking heat exchanger (10) and the gas storage regulating device; The circulating water component is used to exchange heat with the evaporator (3) to vaporize the liquid ammonia in the evaporator (3) to form ammonia gas which enters the ammonia pressure-stabilizing tank (4).

4. The pure ammonia fuel supply system for land transportation equipment according to claim 3, characterized in that: The liquid ammonia evaporation device further comprises a second plasma ignition burner (11); The fourth gas outlet of the ammonia pressure stabilizing tank (4) is connected to the second plasma ignition burner (11), and the second plasma ignition burner (11) is used to heat the room temperature ammonia to form high temperature ammonia, and the high temperature ammonia can selectively enter the land transportation equipment.

5. The pure ammonia fuel supply system for land transportation equipment according to claim 3, characterized in that: It also includes an ignition combustion adjustment device (12); The first gas outlet of the ammonia pressure stabilizing tank (4) is connected to the first plasma ignition burner (9) through the ignition combustion regulating device (12); The ignition combustion regulating device (12) is used to regulate the gas supply flow rate of ammonia gas entering the first plasma ignition burner (9).

6. The pure ammonia fuel supply system for land transportation equipment according to claim 3, characterized in that: The gas storage and regulating device comprises a gas storage tank (13) and a gas regulating device (14); The gas outlet of the cracking heat exchanger (10) is connected to the gas inlet of the gas storage tank (13), and the first gas outlet and the second gas outlet of the gas storage tank (13) are selectively connected to the first gas inlet of the gas regulating device (14) and the land transportation equipment respectively. The second gas outlet of the ammonia pressure stabilizing tank (4) is connected to the second gas inlet of the gas regulating device (14), and the first gas outlet of the gas regulating device (14) is selectively connected to the land transportation equipment.

7. The pure ammonia fuel supply system for land transportation equipment according to claim 6, characterized in that: Also includes two hydrogen concentration detection devices (15); The third gas outlet of the gas storage tank (13) is connected to the gas inlet of a hydrogen concentration detection device (15), the gas outlet of the hydrogen concentration detection device (15) is connected to the gas inlet of the first plasma ignition burner (9), and the hydrogen concentration detection device (15) is used to detect the concentration of hydrogen in the gas storage tank (13); The second gas outlet of the gas regulating device (14) is connected to the gas inlet of another hydrogen concentration detection device (15), and the gas outlet of another hydrogen concentration detection device (15) is connected to the gas inlet of the first plasma ignition burner (9). The other hydrogen concentration detection device (15) is used to detect the concentration of hydrogen in the gas regulating device (14).

8. The pure ammonia fuel supply system for land transportation equipment according to claim 3, characterized in that: The liquid ammonia temperature control device comprises a liquid storage tank (1) storing liquid ammonia and a temperature control chamber (2); The liquid storage tank (1) is arranged in the temperature-controlled chamber (2); the liquid outlet of the liquid storage tank (1) is connected to the liquid inlet of the evaporator (3) to provide liquid ammonia for the evaporator (3).

9. The pure ammonia fuel supply system for land transportation equipment according to claim 8, characterized in that: The liquid ammonia temperature control device further comprises a first filter (8), and the liquid outlet of the liquid storage tank (1) is connected to the liquid inlet of the evaporator (3) through the filter; The ammonia cracking device further comprises a second filter (16), and the gas outlet of the cracking heat exchanger (10) is connected to the gas inlet of the gas storage and regulating device through the second filter (16).

10. The pure ammonia fuel supply system for land transportation equipment according to claim 9, characterized in that: The land transportation equipment is an internal combustion engine generator set (17) and / or a gas turbine generator set (18) for land transportation.

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