Hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology

Abstract

The invention is applicable to the technical field of hydrogen internal combustion engine testing, and provides a hydrogen internal combustion engine testing device based on an organic liquid hydrogen storage technology, which comprises a hydrogen supply unit, a heat management unit, a power detection unit and a control unit, the hydrogen supply unit is used for providing hydrogen fuel for the tested hydrogen internal combustion engine; the power detection unit is used for power detection; the heat management unit is used for consuming heat generated during operation of the tested hydrogen internal combustion engine; the control unit is used for global control, data acquisition and storage, man-machine conversation, information communication and exchange and the like. The device solves the problem of safe storage of hydrogen in a hydrogen internal combustion engine test place, the safety is improved, the hydrogen storage amount in unit space can be increased, the turnover and transportation frequency of a traditional hydrogen storage mode is greatly reduced, and the cost is saved. In addition, the organic liquid hydrogen desorption process can provide load for the tested hydrogen internal combustion engine, the output energy is recycled, and the energy efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of hydrogen internal combustion engine testing, and in particular relates to a hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology. Background Art

[0002] The principle of organic liquid hydrogen storage technology (LOHC for short) is to achieve hydrogen storage (chemical bonding) through the reversible reaction and hydrogenation reaction of unsaturated liquid organic matter such as certain olefins, alkynes or aromatic hydrocarbons and hydrogen, and to achieve hydrogen release through dehydrogenation reaction. The mass hydrogen storage density is 5%-10%, and the hydrogen storage capacity is large. The hydrogen storage material is liquid organic matter, which can be transported at room temperature and pressure, eliminating the properties of hazardous chemicals, and can be transported and stored as ordinary goods, breaking the application limitations of hydrogen and traditional hydrogen-based energy.

[0003] The hydrogen internal combustion engine test system generally includes a fuel supply module, a power detection module, an exhaust gas detection module, a cooling module, a control module, etc. The fuel supply module provides hydrogen for the hydrogen internal combustion engine to test and operate; the power detection module is used to detect the output power of the hydrogen internal combustion engine, including speed, torque, power, etc.; the exhaust gas detection module is used to detect the relevant parameters of the exhaust gas emitted by the hydrogen internal combustion engine, including temperature, flow, composition and concentration, etc.; the cooling module is used to control the operating temperature of the hydrogen internal combustion engine, measure thermal parameters (temperature, coolant flow, pressure, heat, etc.), and remove waste heat; the control module is used to control the entire test system, so that each part works together according to the test requirements, collects and records the test quantity, and analyzes and processes the test results, outputs charts, etc.

[0004] Existing hydrogen internal combustion engine test systems generally use high-pressure gaseous hydrogen as a hydrogen source, and its storage poses great safety risks and requires high safety and management measures, which limits development efficiency to a certain extent. At the same time, due to the restrictions on the safe use of hydrogen and the low storage density of traditional hydrogen storage methods, the laboratory hydrogen storage capacity is generally small, the hydrogen turnover and transportation times are high, and the economic cost and management cost are high. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide a hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology, aiming to solve the problems raised in the above background technology.

[0006] The embodiment of the present invention is implemented as follows: a hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology includes a hydrogen supply unit, a thermal management unit, a power detection unit and a control unit;

[0007] The hydrogen supply unit is connected to the fuel inlet of the hydrogen internal combustion engine to be tested, and is used to provide hydrogen fuel to the hydrogen internal combustion engine to be tested;

[0008] The power detection unit is connected to the mechanical energy output end of the hydrogen internal combustion engine to be tested, and is used to perform power detection and convert mechanical energy into electrical energy for use by other units;

[0009] The thermal management unit is connected to the coolant outlet and inlet of the hydrogen internal combustion engine under test, and is used to consume the heat generated when the hydrogen internal combustion engine under test is running;

[0010] The control unit is used for overall control, data collection and storage, human-computer dialogue, information communication and exchange, etc.

[0011] A further technical solution is that the control unit mainly includes: a main controller, a human-machine interface and a communication module; the main controller can adopt a PLC, a general central processing unit (CPU), a digital signal processor (DSP), a microprocessor (MCU), an application-specific integrated circuit (ASIC) or a field programmable gate array (FPGA); the human-machine interface can adopt a touch screen, an industrial tablet computer, an industrial display and other devices, and can be combined with corresponding buttons, keyboards, indicator lights, buzzers and other devices to form an information input and output interface, which is mainly used to set and feedback the system operation status; the communication module realizes communication connection and data exchange with internal devices or external devices through wired or wireless means.

[0012] In a further technical solution, the hydrogen supply unit comprises an organic liquid hydrogen release module, a hydrogen buffer bottle, an organic liquid recovery container and an organic liquid storage container;

[0013] The organic liquid storage container is connected to the organic liquid hydrogenation module through a liquid inlet pump, the organic liquid hydrogenation module is respectively connected to a hydrogen buffer bottle and an organic liquid recovery container, and the hydrogen buffer bottle is connected to a fuel inlet of a hydrogen internal combustion engine to be tested.

[0014] According to a further technical solution, the thermal management unit includes a preheat exchanger, a heat exchanger, a coolant circulation pump and a cooling tower;

[0015] The inlet of the coolant circulation pump is connected to the coolant outlet of the hydrogen internal combustion engine under test, the outlet of the coolant circulation pump is connected to the pre-heat exchanger through a three-way regulating valve, and the liquid inlet pump is also connected to the pre-heat exchanger, the pre-heat exchanger is connected to the heat exchanger, the heat exchanger is connected to the coolant inlet of the hydrogen internal combustion engine under test, and the outlet of the coolant circulation pump is also directly connected to the coolant inlet of the hydrogen internal combustion engine under test through a three-way regulating valve, and the cooling tower is also connected to the heat exchanger.

[0016] According to a further technical solution, the power detection unit includes a power distribution module and an electric dynamometer, the electric dynamometer is connected to the mechanical energy output end of the hydrogen internal combustion engine under test, and the output end of the electric dynamometer is connected to the power distribution module.

[0017] The embodiment of the present invention provides a hydrogen internal combustion engine test device based on organic liquid hydrogen storage technology, which uses hydrogen-containing organic liquid as a hydrogen carrier and uses an organic liquid hydrogen release module to release hydrogen from the hydrogen-containing organic liquid for use in hydrogen internal combustion, thereby solving the problem of safe storage of hydrogen in hydrogen internal combustion engine test sites, improving safety, and increasing the hydrogen storage per unit space, greatly reducing the turnover and transportation times of traditional hydrogen storage methods, and saving costs. In addition, the organic liquid hydrogen release process can provide a load for the hydrogen internal combustion engine being tested, and the output energy can be recycled and reused, thereby improving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology provided in an embodiment of the present invention.

[0019] In the attached drawing: a hydrogen internal combustion engine 1 to be tested; a hydrogen supply unit 2; an organic liquid dehydrogenation module 21; a hydrogen buffer bottle 22; an organic liquid recovery container 23; an organic liquid storage container 24; a liquid inlet pump 25; a thermal management unit 3; a preheat exchanger 31; a heat exchanger 32; a three-way regulating valve 33; a coolant circulation pump 34; a cooling tower 35; a power detection unit 4; a power distribution module 41; and an electric dynamometer 42. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] like Figure 1 As shown, a hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology provided by an embodiment of the present invention includes a hydrogen supply unit 2, a thermal management unit 3, a power detection unit 4 and a control unit;

[0023] The hydrogen supply unit 2 is connected to the fuel inlet of the hydrogen internal combustion engine 1 to be tested, and is used to provide hydrogen fuel to the hydrogen internal combustion engine 1 to be tested;

[0024] The power detection unit 4 is connected to the mechanical energy output end of the hydrogen internal combustion engine 1 to be tested, and is used to perform power detection and convert mechanical energy into electrical energy for use by other units;

[0025] The thermal management unit 3 is connected to the coolant outlet and inlet of the hydrogen internal combustion engine 1 under test, and is used to consume the heat generated when the hydrogen internal combustion engine 1 under test is running;

[0026] The control unit is used for overall control, data collection and storage, human-computer dialogue, information communication and exchange, etc.

[0027] In the embodiment of the present invention, the hydrogen supply unit 2 provides hydrogen fuel for the hydrogen internal combustion engine 1 under test; the mechanical energy generated by the operation of the hydrogen internal combustion engine 1 under test is output to the power detection unit 2, the power detection unit 2 performs power detection, and can generate electrical energy to provide to the hydrogen supply unit 2, and the excess electrical energy is fed back to the power grid or stored or consumed in other ways. The heat generated by the operation of the hydrogen internal combustion engine 1 under test is input to the thermal management unit 3, part of the heat is supplied to the hydrogen supply unit 2 for preheating, and the remaining heat is dissipated through the heat exchanger and the cooling tower.

[0028] As a preferred embodiment of the present invention, the control unit mainly includes: a main controller, a human-machine interface and a communication module; the main controller can adopt PLC, a general central processing unit (CPU), a digital signal processor (DSP), a microprocessor (MCU), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other processor modules, and has signal processing, control and data computing capabilities; the control program is written into the main controller by programming, including various control methods, steps and logic diagrams, and the control function of the system can be realized by the integrated logic circuit or software instructions in the main controller. The human-machine interface can adopt touch screens, industrial tablet computers, industrial displays and other devices, and can be combined with corresponding buttons, keyboards, indicator lights, buzzers and other devices to form an information input and output interface, which is mainly used to set and feedback the system operation status. The communication module realizes communication connection and data exchange with internal devices or external devices in a wired or wireless manner.

[0029] like Figure 1 As shown, as a preferred embodiment of the present invention, the hydrogen supply unit 2 includes an organic liquid hydrogen discharge module 21, a hydrogen buffer bottle 22, an organic liquid recovery container 23 and an organic liquid storage container 24;

[0030] The organic liquid storage container 24 is connected to the organic liquid dehydrogenation module 21 through a liquid inlet pump 25, and the organic liquid dehydrogenation module 21 is respectively connected to a hydrogen buffer bottle 22 and an organic liquid recovery container 23, and the hydrogen buffer bottle 22 is connected to the fuel inlet of the hydrogen internal combustion engine 1 under test.

[0031] In the embodiment of the present invention, when in use, the hydrogen-containing organic liquid in the organic liquid storage container 24 is transported to the organic liquid hydrogenation module 21 through the liquid inlet pump 25, and the hydrogen generated by the organic liquid hydrogenation module 21 is transported to the hydrogen buffer bottle 22, and then transported to the hydrogen internal combustion engine 1 under test through the hydrogen buffer bottle 22, and the dehydrogenated organic liquid is recovered into the organic liquid recovery container 23.

[0032] like Figure 1As shown, as a preferred embodiment of the present invention, the thermal management unit 3 includes a preheat exchanger 31, a heat exchanger 32, a coolant circulation pump 34 and a cooling tower 35;

[0033] The inlet of the coolant circulation pump 34 is connected to the coolant outlet of the hydrogen internal combustion engine 1 under test, and the outlet of the coolant circulation pump 34 is connected to the pre-heat exchanger 31 through a three-way regulating valve 33, and the liquid inlet pump 25 is also connected to the pre-heat exchanger 31, the pre-heat exchanger 31 is connected to the heat exchanger 32, the heat exchanger 32 is connected to the coolant inlet of the hydrogen internal combustion engine 1 under test, and the outlet of the coolant circulation pump 34 is also directly connected to the coolant inlet of the hydrogen internal combustion engine 1 under test through the three-way regulating valve 33, and the cooling tower 35 is also connected to the heat exchanger 32.

[0034] In the embodiment of the present invention, the function of the thermal management unit 3 is to recycle and dissipate the waste heat generated by the hydrogen internal combustion engine 1 under test during operation, so that the hydrogen internal combustion engine 1 under test can operate within the specified temperature. Part of the waste heat generated by the hydrogen internal combustion engine 1 under test is transferred to the coolant through the cylinder body; the hydrogen internal combustion engine 1 under test needs to first establish a suitable operating temperature during cold start. At this time, under the regulation of the three-way regulating valve 33, the coolant does not pass through the preheat exchanger 31 and the heat exchanger 32, and directly returns to the hydrogen internal combustion engine 1 under test (commonly known as the "small cycle") to prevent heat loss, thereby quickly increasing the cylinder body temperature. After the cylinder body temperature is established, under the regulation of the three-way regulating valve 33, the coolant passes through the preheat exchanger 31 and the heat exchanger 32 and returns to the hydrogen internal combustion engine 1 under test (commonly known as the "large cycle"). The preheat exchanger 31 transfers heat to the hydrogen-containing organic liquid for preheating. The system controls and adjusts the three-way regulating valve 33 according to the coolant temperature, so that the coolant temperature returned to the hydrogen internal combustion engine 1 under test is within the specified range.

[0035] like Figure 1 As shown, as a preferred embodiment of the present invention, the power detection unit 4 includes a power distribution module 41 and an electric dynamometer 42, the electric dynamometer 42 is connected to the mechanical energy output end of the hydrogen internal combustion engine 1 under test, and the output end of the electric dynamometer 42 is connected to the power distribution module 41.

[0036] In the embodiment of the present invention, the power of the hydrogen internal combustion engine 1 is tested by the electric dynamometer 42, and the electric dynamometer 42 generates electric energy which is input into the power distribution module. The power distribution module provides electric energy to the organic liquid hydrogenation module 21 according to its power demand, and the excess electric energy is fed back to the power grid or stored or consumed in other ways.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology, characterized in that: It includes a hydrogen supply unit, a thermal management unit, a power detection unit and a control unit; The hydrogen supply unit is connected to the fuel inlet of the hydrogen internal combustion engine to be tested, and is used to provide hydrogen fuel to the hydrogen internal combustion engine to be tested; The power detection unit is connected to the mechanical energy output end of the hydrogen internal combustion engine to be tested, and is used to perform power detection and convert mechanical energy into electrical energy; The thermal management unit is connected to the coolant outlet and inlet of the hydrogen internal combustion engine under test, and is used to consume the heat generated when the hydrogen internal combustion engine under test is running; The control unit is used for overall control, data collection and storage, human-computer dialogue, and information communication and exchange.

2. The hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology according to claim 1 is characterized in that: The control unit includes a main controller, a human-machine interface and a communication module; The main controller uses PLC, CPU, DSP, MCU, ASIC or FPGA; The human-machine interface uses a touch screen, industrial tablet computer or industrial display; The communication module realizes communication connection and data exchange with internal devices or external devices through wired or wireless means.

3. The hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology according to claim 1 is characterized in that: The hydrogen supply unit includes an organic liquid hydrogen release module, a hydrogen buffer bottle, an organic liquid recovery container and an organic liquid storage container; The organic liquid storage container is connected to the organic liquid hydrogenation module through a liquid inlet pump, the organic liquid hydrogenation module is respectively connected to a hydrogen buffer bottle and an organic liquid recovery container, and the hydrogen buffer bottle is connected to a fuel inlet of a hydrogen internal combustion engine to be tested.

4. The hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology according to claim 3 is characterized in that: The thermal management unit includes a preheat exchanger, a heat exchanger, a coolant circulation pump and a cooling tower; The inlet of the coolant circulation pump is connected to the coolant outlet of the hydrogen internal combustion engine under test, the outlet of the coolant circulation pump is connected to the pre-heat exchanger through a three-way regulating valve, and the liquid inlet pump is also connected to the pre-heat exchanger, the pre-heat exchanger is connected to the heat exchanger, the heat exchanger is connected to the coolant inlet of the hydrogen internal combustion engine under test, and the outlet of the coolant circulation pump is also directly connected to the coolant inlet of the hydrogen internal combustion engine under test through a three-way regulating valve, and the cooling tower is also connected to the heat exchanger.

5. The hydrogen internal combustion engine testing device based on organic liquid hydrogen storage technology according to claim 3 is characterized in that: The power detection unit comprises a power distribution module and an electric dynamometer. The electric dynamometer is connected to the mechanical energy output end of the hydrogen internal combustion engine to be tested, and the output end of the electric dynamometer is connected to the power distribution module.

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