Liquid hydrogen fuel cell locomotive system

Abstract

The utility model discloses a liquid hydrogen fuel cell locomotive system, which relates to the field of cell locomotive systems and comprises a fuel tank system, a liquid hydrogen fuel cell locomotive system and a liquid hydrogen fuel cell locomotive system, the input end of the fuel tank liquid outlet pipeline is communicated with the output end of the fuel tank system; the input end of the heat exchange system is communicated with the output end of the fuel tank liquid outlet pipeline; the input end of the hydrogen using pipeline is communicated with the output end of the heat exchange system; the input end of the reaction system is communicated with the output end of the hydrogen using pipeline; and the circulating system forms circulating fluid flow with the heat exchange system and the reaction system. According to the utility model, the circulating system which forms circulating fluid flowing with the heat exchange system and the reaction system is arranged, so that the purposes of fully utilizing the heat of the electric pile, reducing the energy consumption of the whole vehicle and ensuring the economical efficiency of the whole vehicle are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery locomotive system, concretely relates to a liquid hydrogen fuel cell locomotive system. BACKGROUND

[0002] Hydrogen energy has three characteristics of "efficient and clean secondary energy, flexible and intelligent energy carrier, and green and low-carbon industrial raw material", gradually builds diversified application scenarios in the fields of transportation, energy storage, power generation, and industry, and is considered as a technical means to achieve carbon neutralization. It is urgent to clean and low-carbon reform the old diesel internal combustion locomotive. Hydrogen fuel locomotive is free from the bondage of catenary operation conditions, is very suitable for existing non-electrified line sections, and avoids huge infrastructure investment and maintenance cost brought by electrification reform.

[0003] In view of the use of fuel cell locomotive, liquid hydrogen will be the best option for fuel cell locomotive. How to make the safety and reliability of liquid hydrogen fuel cell locomotive high, the overall volume of the system small, the energy utilization rate high, and the energy consumption of the whole vehicle low is a problem that needs to be solved for liquid hydrogen fuel cell locomotive system. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of liquid hydrogen fuel cell locomotive system, circulation system is formed by being arranged with heat exchange system and reaction system to form circulating fluid flow, to solve the problem that the heat of liquid hydrogen fuel cell locomotive in prior art is not fully utilized.

[0005] The utility model embodiment is realized by the following technical scheme: the utility model embodiment provides a kind of liquid hydrogen fuel cell locomotive system, comprising:

[0006] Fuel tank system for storing fuel;

[0007] Fuel tank liquid outlet pipeline, its input end is communicated with the output end of fuel tank system;

[0008] Heat exchange system, its input end is communicated with the output end of fuel tank liquid outlet pipeline;

[0009] Hydrogen pipeline, its input end is communicated with the output end of heat exchange system;

[0010] Reaction system, its input end is communicated with the output end of hydrogen pipeline;

[0011] Circulation system, which forms circulating fluid flow with heat exchange system and reaction system.

[0012] Optionally, the circulation system includes a cold energy utilization pipeline and a heat energy utilization pipeline;

[0013] One end of the cold energy utilization pipeline is communicated with the heat exchange system, and the other end is communicated with the reaction system;

[0014] The heat energy utilization pipeline is communicated with the heat exchange system at one end and communicated with the reaction system at the other end.

[0015] The water tank is arranged on the cold energy utilization pipeline, and the water tank is arranged to transport the fluid into the reaction system through the cold energy utilization pipeline to absorb heat, then transport the fluid into the heat exchange system through the heat energy utilization pipeline after the fluid is heated, and then transport the fluid into the water tank through the cold energy utilization pipeline after the fluid is cooled by exchanging heat with the fuel in the heat exchange system.

[0016] Optionally, the fuel in the fuel tank system is liquid hydrogen, and the fuel tank liquid outlet pipeline is arranged to transport the liquid hydrogen into the heat exchange system to be converted into hydrogen gas after being heated, and the hydrogen pipeline is arranged to transport the hydrogen gas into the reaction system to react.

[0017] Optionally, the fuel tank liquid outlet pipeline is sleeved with a heat preservation and insulation sleeve, and the fuel tank liquid outlet pipeline is provided with a pneumatic valve.

[0018] Optionally, the heat exchange system comprises at least one of a tube-in-shell heat exchanger, a double-pipe heat exchanger and a plate heat exchanger.

[0019] Optionally, the hydrogen pipeline is provided with a temperature transmitter.

[0020] Optionally, the cold energy utilization pipeline and the heat energy utilization pipeline are both provided with temperature transmitters.

[0021] Optionally, the hydrogen pipeline and the heat energy utilization pipeline are both provided with pressure transmitters.

[0022] Optionally, the hydrogen pipeline is provided with an exhaust valve.

[0023] Optionally, the heat energy utilization pipeline is communicated with a water injection pipeline.

[0024] Compared with the prior art, the embodiment of the utility model has the following advantages and beneficial effects:

[0025] 1. The liquid hydrogen fuel cell locomotive system provided by the embodiment of the utility model, through setting up the fuel tank system to store liquid hydrogen, through the fuel tank liquid outlet pipeline, liquid hydrogen is delivered to the heat exchange system. The heat exchange system uses waste heat or environmental heat to vaporize liquid hydrogen into gaseous hydrogen, and the gaseous hydrogen after vaporization enters the reaction system through the hydrogen pipeline, and the oxygen in the air occurs electrochemical reaction in the fuel cell stack, generates electric energy, and the heat generated by the reaction system is recycled through the circulating system and is transmitted to the heat exchange system for the vaporization process of liquid hydrogen, realizing the recycling of heat. The embodiment of the utility model fully utilizes the heat generated by the fuel cell reaction system through the circulating fluid flow system, reduces energy waste, reduces the dependence on external energy in the liquid hydrogen vaporization process, reduces the operating energy consumption of the locomotive, reasonably arranges the fuel tank and the heat exchange system, reduces the overall volume of the system, improves the space utilization rate of the locomotive, adopts efficient heat insulation and heat exchange technology, and ensures the safe operation of the liquid hydrogen storage tank.

[0026] 2. The embodiment of the utility model sets up the circulating system to include the cold energy utilization pipeline and the heat energy utilization pipeline, the water tank is arranged on the cold energy utilization pipeline, the water tank delivers the fluid to the reaction system through the cold energy utilization pipeline to absorb heat, the fluid after absorbing heat is delivered to the heat exchange system through the heat energy utilization pipeline, and the fluid is cooled after exchanging heat with fuel in the heat exchange system. The fluid after cooling is delivered back to the water tank through the cold energy utilization pipeline to form a cycle. The structure not only can utilize the heat of the stack reaction system in the liquid hydrogen fuel cell locomotive system, but also can recycle and reuse the cold energy of liquid hydrogen. Therefore, under the premise of ensuring the working reliability of each component of the liquid hydrogen fuel cell locomotive system, the overall vehicle energy consumption is reduced, and the economy of the whole machine is ensured.

[0027] Overall, the embodiment of the utility model provides the liquid hydrogen fuel cell locomotive system which sets up the circulating system to form the circulating fluid flow with the heat exchange system and the reaction system, so as to fully utilize the heat of the stack, reduce the overall vehicle energy consumption, and ensure the economy of the whole machine. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as the limitation to the scope. For ordinary skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 The structure schematic view of the liquid hydrogen fuel cell locomotive system provided by the embodiment of the utility model.

[0030] Markings in the drawings and corresponding component names:

[0031] 1 - fuel tank system, 2 - fuel tank outlet pipeline, 3 - heat exchange system, 4 - hydrogen pipeline, 5 - reaction system, 6 - cold energy utilization pipeline, 7 - heat energy utilization pipeline, 8 - water tank, 9 - water injection pipeline. DETAILED DESCRIPTION

[0032] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0033] Therefore, the detailed description of the embodiments of the present application provided in the drawings below is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0034] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the present application, it should be noted that the terms "first", "second", "third" and the like are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0036] EMBODIMENTS

[0037] Embodiment 1: as Figure 1As shown, the utility model embodiment provides a kind of liquid hydrogen fuel cell locomotive system, comprising: fuel tank system 1, fuel tank liquid outlet pipeline 2, heat exchange system 3, with hydrogen pipeline 4, reaction system 5 and circulation system.Wherein fuel tank system 1 is used to store fuel, in the utility model embodiment fuel is liquid hydrogen, for battery locomotive system, of course in other embodiments, the system can also be used for other fluid fuel, applicable to other suitable scenarios, not limited here;Return to the utility model embodiment, the input end of fuel tank liquid outlet pipeline 2 is communicated with the output end of fuel tank system 1, it transports liquid hydrogen from fuel tank to heat exchange system 3, ensure the safety and stability of liquid hydrogen in the process of delivery;The input end of heat exchange system 3 is communicated with the output end of fuel tank liquid outlet pipeline 2, its role is to vaporize liquid hydrogen into gaseous hydrogen gas;The input end of with hydrogen pipeline 4 is communicated with the output end of heat exchange system 3, its role is to deliver gaseous hydrogen gas after vaporization to reaction system 5;The input end of reaction system 5 is communicated with the output end of with hydrogen pipeline 4, its role is to make hydrogen gas and oxygen in air electrochemical reaction in fuel cell stack, generate electric energy.

[0038] In the utility model embodiment, the core is that circulation system is also provided, circulation system and heat exchange system 3 and reaction system 5 form circulating fluid flow, to recover the heat generated by fuel cell reaction system 5, and it is passed to heat exchange system 3, and is reused by heat exchange system 3.In the process of liquid hydrogen fuel cell locomotive system operation, fuel tank system 1 stores liquid hydrogen, and liquid hydrogen is delivered to heat exchange system 3 by fuel tank liquid outlet pipeline 2.Heat exchange system 3 vaporizes liquid hydrogen into gaseous hydrogen gas using waste heat or environmental heat, and gaseous hydrogen gas after vaporization enters reaction system 5 by with hydrogen pipeline 4, and electrochemical reaction occurs in fuel cell stack with oxygen in air, and electric energy is generated.The heat generated by reaction system 5 is recycled by circulation system, and is passed to heat exchange system 3, for the vaporization process of liquid hydrogen, realize the cyclic utilization of heat.Sufficiently utilize the heat generated by fuel cell reaction system 5, reduce energy waste, reduce the dependence on external energy in liquid hydrogen vaporization process, reduce the operating energy consumption of locomotive.

[0039] As the preferred embodiment of the utility model, the circulating system includes a cold energy utilization pipeline 6 and a heat energy utilization pipeline 7; the cold energy utilization pipeline 6 is communicated with the heat exchange system 3 at one end, and is communicated with the reaction system 5 at the other end; the heat energy utilization pipeline 7 is communicated with the heat exchange system 3 at one end, and is communicated with the reaction system 5 at the other end; the cold energy utilization pipeline 6 is provided with a water tank 8; the water tank 8 is arranged to deliver fluid into the reaction system 5 through the cold energy utilization pipeline 6 to absorb heat, and then deliver the fluid into the heat exchange system 3 through the heat energy utilization pipeline 7 after the fluid is heated; the fluid is cooled after exchanging heat with fuel in the heat exchange system 3, and then the cooled fluid is delivered into the water tank 8 through the cold energy utilization pipeline 6, to form a cycle. The structure can not only utilize the heat of the stack reaction system 5 in the liquid hydrogen fuel cell locomotive system, but also recycle the cold energy of the liquid hydrogen. Therefore, the energy consumption of the whole vehicle is reduced under the premise of ensuring the working reliability of each component of the liquid hydrogen fuel cell locomotive system, and the economy of the whole machine is ensured.

[0040] In the embodiment of the utility model, the heat exchange system 3 can be provided with one or a combination of a tube-shell heat exchanger, a wound tube heat exchanger and a plate heat exchanger, which can complete the heat exchange between the liquid hydrogen and the circulating fluid, so that the energy consumption of the whole vehicle is reduced under the premise of ensuring the working reliability of each component of the liquid hydrogen fuel cell locomotive system, and the economy of the whole machine is ensured. Of course, in other embodiments, the heat exchanger structure is not limited to the above-mentioned several kinds, as long as the purpose of achieving sufficient heat exchange effect can be achieved. At the same time, the combined heat exchanger is convenient for sectional temperature control, avoids the safety risk caused by sharp temperature change, and further improves the safety of the liquid hydrogen fuel cell locomotive system.

[0041] It should be noted that the fluid here can be gas or liquid, which is not limited here and can be set according to actual needs. In order to facilitate understanding, water is used as the description in the subsequent description of the embodiment of the utility model.

[0042] To ensure the safety of the liquid hydrogen fuel cell system, in the embodiment, temperature transmitters are arranged on the cold energy utilization pipeline 6, the hydrogen pipeline 4 and the heat energy utilization pipeline 7, so that the pipeline temperature can be effectively monitored, ice blockage caused by excessively low temperature of the heat exchange system 3 can be prevented, and the liquid hydrogen amount can be timely adjusted when temperature abnormality is found. Pressure transmitters are arranged on the hydrogen pipeline 4 and the heat energy utilization pipeline 7, so that the pipeline pressure change condition can be monitored in real time, the circulation water and hydrogen flow change can be timely responded, heat exchange in the heat exchange system 3 is more sufficient, and the energy utilization rate of the liquid hydrogen fuel cell locomotive system is improved. An exhaust valve can be arranged on the hydrogen pipeline 4, the exhaust valve can include manual exhaust and automatic safety exhaust, so that the safety of the liquid hydrogen fuel cell system can be protected when pressure is built up, and misoperation and overpressure are prevented. The heat energy utilization pipeline 7 can be provided with a water injection pipeline 9, circulation water can be manually added when heat of the stack reaction system 5 does not reach the heat exchange system 3, and the liquid hydrogen fuel cell system can be quickly started, so that circulation water can be added through the water injection pipeline 9 in advance to ensure the safety of the liquid hydrogen fuel cell system.

[0043] Of course, electric heat tracing can also be added in the heat exchange system 3, the electric heat tracing can supply low-temperature heat to the liquid hydrogen of the heat exchange system 3 in advance before waste heat of the reaction system 5 is not transmitted to the heat exchange system 3, and the safety of the liquid hydrogen fuel cell locomotive system is ensured. As the preferred embodiment of the utility model, a coiled pipe structure can be added in the heat exchange system 3, the coiled pipe is distant near the low-temperature liquid hydrogen inlet and close near the low-temperature liquid hydrogen outlet, so that frost formation of the coiled pipe at the inlet is prevented, heat exchange effect is prevented from being reduced, and the safety of the liquid hydrogen fuel cell locomotive system is further ensured.

[0044] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. It should be noted that the structures or components shown in the drawings are not necessarily drawn to scale, and the utility model omits the description of known components and processing technologies and processes to avoid unnecessary limitation of the utility model.

Claims

1. A liquid hydrogen fuel cell locomotive system, characterized in that, include: A fuel tank system (1) for storing fuel; The fuel tank outlet pipeline (2) has its input end connected to the output end of the fuel tank system (1); The heat exchange system (3) has its input end connected to the output end of the fuel tank outlet pipeline (2); A hydrogen pipeline (4) is used, the input end of which is connected to the output end of the heat exchange system (3); The reaction system (5) has its input end connected to the output end of the hydrogen pipeline (4); A circulating system that forms a circulating fluid flow with the heat exchange system (3) and the reaction system (5).

2. The liquid hydrogen fuel cell locomotive system according to claim 1, characterized in that, The circulation system includes a cold energy utilization pipeline (6) and a heat energy utilization pipeline (7); The cold energy utilization pipeline (6) is connected to the heat exchange system (3) at one end and to the reaction system (5) at the other end; The heat energy utilization pipeline (7) is connected to the heat exchange system (3) at one end and to the reaction system (5) at the other end; A water tank (8) is installed on the cold energy utilization pipeline (6). The water tank (8) is configured to transport the fluid to the reaction system (5) through the cold energy utilization pipeline (6) to absorb heat, and then transport it to the heat exchange system (3) through the heat energy utilization pipeline (7). The heated fluid exchanges heat with the fuel in the heat exchange system (3) and then cools down. The cooled fluid is then transported back to the water tank (8) through the cold energy utilization pipeline (6).

3. A liquid hydrogen fuel cell locomotive system according to claim 1 or 2, characterized in that, The fuel in the fuel tank system (1) is liquid hydrogen. The liquid hydrogen outlet pipeline (2) is configured to transport the liquid hydrogen to the heat exchange system (3) for heating and conversion into hydrogen gas. The hydrogen use pipeline (4) is configured to transport the hydrogen gas to the reaction system (5) for reaction.

4. The liquid hydrogen fuel cell locomotive system according to claim 1, characterized in that, The fuel tank outlet pipe (2) is covered with a heat insulation sleeve, and a pneumatic valve is installed on the fuel tank outlet pipe (2).

5. A liquid hydrogen fuel cell locomotive system according to claim 1, characterized in that, The heat exchange system (3) includes at least one of shell-and-tube heat exchangers, coaxial heat exchangers, and plate heat exchangers.

6. A liquid hydrogen fuel cell locomotive system according to claim 1, characterized in that, A temperature transmitter is installed on the hydrogen pipeline (4).

7. A liquid hydrogen fuel cell locomotive system according to claim 2, characterized in that, Temperature transmitters are installed on both the cold energy utilization pipeline (6) and the heat energy utilization pipeline (7).

8. A liquid hydrogen fuel cell locomotive system according to claim 2, characterized in that, Pressure transmitters are installed on both the hydrogen pipeline (4) and the heat energy utilization pipeline (7).

9. A liquid hydrogen fuel cell locomotive system according to claim 1, characterized in that, An exhaust valve is installed on the hydrogen pipeline (4).

10. A liquid hydrogen fuel cell locomotive system according to claim 2, characterized in that, The heat energy utilization pipeline (7) is connected to a water injection pipeline (9).

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