Hydrogen energy storage peak shaving example device

Abstract

The utility model relates to a hydrogen energy storage peak regulation example device, which comprises a hydrogen production simulation assembly, a hydrogen storage simulation assembly and a hydrogen utilization simulation assembly, realizes the combination of hydrogen production, hydrogen storage and hydrogen utilization, and can be used for hydrogen energy storage peak regulation simulation demonstration. The device covers a plurality of parts such as an unstable power generation source, water electrolysis hydrogen production storage, hydrogen fuel cell power generation and a variable power utilization load, and the performance of hydrogen energy storage peak regulation, long-time energy storage and rapid peak regulation can be demonstrated and verified by simulating the electric quantity demand matching of the unstable power generation source, energy storage and the variable load.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy storage, and in particular to an exemplary hydrogen energy storage peak regulation device. Background Art

[0002] With the rapid development of clean energy industries such as photovoltaics and wind power, their proportion in my country's energy market has gradually increased. However, due to the large volatility of photovoltaic and wind power clean energy generation, it has brought a huge impact on the stable operation of the electricity consumption side. Long-term energy storage peak-shaving technology is a storage technology that can store electrical energy and release it within more than 4 hours. It has the ability to charge and discharge across days, months, and even seasons. It aims to meet the long-term stability needs of the power system, improve the absorption capacity of new energy, provide more flexible resources for the power grid, and effectively reduce the operation cost of the power grid. However, there are currently few teaching aids or models used to demonstrate hydrogen energy storage peak-shaving technology. It cannot fully and clearly show the hydrogen energy storage peak-shaving process, and cannot perform feasibility analysis, economic calculations, teaching demonstrations, etc. Utility Model Content

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a hydrogen energy storage peak-shaving device, which specifically adopts the following technical solutions:

[0004] An exemplary hydrogen energy storage peak-shaving device comprises a base plate, a hydrogen production simulation component, a hydrogen storage simulation component and a hydrogen use simulation component, wherein the hydrogen production simulation component, the hydrogen storage simulation component and the hydrogen use simulation component are all fixed to the base plate;

[0005] The hydrogen production simulation component includes a DC power supply, a generator, an electrolyzer, a water pump, a water tank and a gas-liquid separation device, wherein the DC power supply and the generator are respectively connected to the electrolyzer; the liquid in the water tank is driven into the electrolyzer by the water pump, and hydrogen and oxygen are generated by the electrolyzer, the hydrogen generated by the electrolyzer flows to the gas-liquid separation device through a pipeline for separation, and the separated hydrogen flows to the hydrogen storage simulation component, and the oxygen generated by the electrolyzer flows to the water tank through a pipeline;

[0006] The hydrogen storage simulation component includes a hydrogen storage tank and two sets of flow meters, wherein the gas input port of the hydrogen storage tank is connected to a first flow meter upstream, and the first flow meter is connected to the hydrogen outlet of the gas-liquid separation device; the gas output port of the hydrogen storage tank is connected to a second flow meter downstream, and the second flow meter is connected to the hydrogen simulation component;

[0007] The hydrogen simulation component includes a fuel cell and a variable load. The fuel cell is connected to the second flow meter to receive hydrogen delivered from the second flow meter. The fuel cell is connected to the variable load to provide power to the variable load.

[0008] Optionally: the hydrogen simulation component also includes a fuel controller and an air pump, the air inlet of the air pump is connected to the fuel cell, and the air outlet of the air pump is connected to the water tank of the hydrogen production simulation component; the fuel controller is respectively connected to the fuel cell and the air pump, and the operation of the air pump is controlled by the fuel controller, thereby controlling the amount of gas participating in the reaction inside the fuel cell.

[0009] Optionally: the variable load uses several groups of LED lamp beads connected in parallel, and each group of LED lamp beads is connected to a group of control switches to control the on and off of the current of the LED lamp beads.

[0010] Optionally: the generator adopts a hand-cranked generator to simulate an unstable power source.

[0011] Optionally: the first flow meter adopts a mechanical flow meter, and the first flow meter is used to monitor the flow rate and stability of the hydrogen generated by the hydrogen production simulation component.

[0012] Optionally: the second flow meter is a digitally controlled flow meter, and the second flow meter controls the quantitative flow of hydrogen into the fuel cell according to the internal pressure signal of the fuel cell.

[0013] Optionally: the water tank includes a water outlet port at the bottom and a water return port at the top, the water outlet port of the water tank is connected to the water inlet of the water pump through a pipeline; the liquid outlet in the electrolytic cell for the remaining liquid to flow out is connected to the water return port of the water tank.

[0014] Optionally: the water tank also includes an exhaust port and an air inlet port located at the top, the exhaust port is used to discharge the gas in the water tank; the oxygen outlet of the electrolyzer, the liquid outlet of the gas-liquid separation device and the air outlet of the vacuum pump are respectively connected to a group of air inlet ports.

[0015] Optionally: the hydrogen storage tank is provided with a pressure gauge, and the pressure gauge is used to monitor the amount of hydrogen inside the hydrogen storage tank.

[0016] Optionally: a filter is provided on the pipeline between the water pump and the electrolytic cell, and the filter is used to filter the liquid entering the electrolytic cell.

[0017] Beneficial Effects

[0018] The technical solution of the utility model has the following beneficial effects:

[0019] The hydrogen energy storage peak-shaving example device of the utility model realizes the combination of hydrogen production, storage and use, and can be used for hydrogen energy storage peak-shaving simulation demonstration. The device covers multiple parts such as unstable power generation source, water electrolysis hydrogen production and storage, hydrogen fuel cell power generation and variable power load. By simulating the power demand matching of unstable power generation source, energy storage and variable load, it can demonstrate and verify the performance of hydrogen energy storage peak-shaving, long-term energy storage and rapid peak-shaving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of an example hydrogen energy storage peak-shaving device in Example 1 of the utility model. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model. It should be pointed out that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present application.

[0022] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Hydrogen energy storage peak-shaving technology uses the conversion between hydrogen energy and electricity to achieve the purpose of stable operation of the power system. When there is sufficient electricity, the excess electricity is stored by using water electrolysis hydrogen production technology; when the power output is insufficient, the stored hydrogen energy is used to generate electricity using hydrogen fuel cells or hydrogen-fired steam turbines and returned to the power grid system for power supply. Hydrogen energy storage peak-shaving facilities generally include one or more hydrogen storage systems, water electrolysis systems, fuel cell systems, and generator systems. The construction and operation costs of the facilities are high, and the equipment is bulky. In order to demonstrate the hydrogen energy storage peak-shaving process, the device is divided into three parts in this embodiment: a hydrogen production simulation component, a hydrogen storage simulation component, and a hydrogen use simulation component. Among them, the hydrogen production simulation component uses power supplies, generators, electrolyzers and other components to simulate the process of electrolyzing water to produce hydrogen from unstable electricity generated by wind power generation and photovoltaic power generation; the hydrogen storage simulation component simulates the process of storing the generated hydrogen in the corresponding position and controlling its volume and pressure, and the hydrogen use simulation component uses a fuel cell to convert the generated hydrogen into the stable electricity required on the power consumption side.

[0026] Combination Figure 1 As shown, this embodiment specifically discloses an example device for hydrogen energy storage peak regulation, which includes a base plate, a hydrogen production simulation component, a hydrogen storage simulation component and a hydrogen use simulation component, wherein the hydrogen production simulation component, the hydrogen storage simulation component and the hydrogen use simulation component are all fixed to the base plate; in this embodiment, in order to facilitate the disassembly and replacement of each component on the base plate, a perforated plate is preferably used. Each component is fixed to the perforated plate by means of cable ties, screws, etc.

[0027] Specifically, the hydrogen production simulation component mainly simulates the process of electrolyzing water to produce hydrogen using unstable electricity generated by wind power generation and photovoltaic power generation. The hydrogen production simulation component includes a DC power supply, a generator, an electrolyzer, a water pump, a water storage tank, and a gas-liquid separation device, wherein the DC power supply and the generator are respectively used to simulate the stable power and unstable power in the hydrogen production process. In this embodiment, the generator preferably uses a hand-cranked generator to simulate an unstable power source. The DC power supply and the generator are respectively connected to the electrolyzer to drive the electrolyzer to perform the water electrolysis process. In addition, a first control switch can be set on the connection line between the DC power supply and the electrolyzer, and the power on and off of the DC power supply and the electrolyzer can be controlled by the first control switch, thereby simulating the process of stable power participating in or disconnecting the electrolysis hydrogen production system; similarly, a second control switch can be set on the connection line between the generator and the electrolyzer, and the power on and off of the generator and the electrolyzer can be controlled by the second control switch, thereby simulating the process of unstable power participating in or disconnecting the electrolysis hydrogen production system.

[0028] Furthermore, in this embodiment, a water circuit for hydrogen production by electrolysis is designed: the water storage tank can be fixed to the punching plate by means of cable ties, screws, etc., and the water storage tank stores liquid for electrolysis; the water storage tank, water pump, and electrolyzer are connected in series in sequence through pipelines, and the liquid in the water storage tank is driven into the electrolyzer by the water pump, and hydrogen and oxygen are generated by the electrolyzer.

[0029] Specifically, the water storage tank in this embodiment is provided with a water outlet port at the bottom and a water return port at the top, and the water outlet port of the water storage tank is connected to the water inlet of the water pump through a pipeline; when simulating the electrolysis hydrogen production process, the water pump is started, and the liquid used for electrolysis in the water storage tank is extracted, and the liquid is passed into the liquid inlet of the electrolyzer, and the electrolyzer converts part of the liquid into hydrogen and oxygen respectively, and the remaining liquid flows back to the water return port of the water storage tank through the liquid outlet for the remaining liquid to flow out of the electrolyzer and is stored again.

[0030] It should be noted that the hydrogen generated by the electrolyzer in this embodiment flows through a pipeline to the gas-liquid separation device for separation, while the oxygen generated by the electrolyzer flows through a pipeline to the water tank. The corresponding water tank is also provided with an exhaust port and an air inlet port located at the top, and the exhaust port is used to discharge the gas in the water tank to balance the internal air pressure; and the oxygen outlet of the electrolyzer is connected to the air inlet port of a group of water tanks. After the oxygen enters the water tank, since the oxygen and the liquid are incompatible, it will be separated from the liquid and rise to the top space of the water tank, and then discharged to the outside through the exhaust port. Furthermore, the hydrogen generated by the electrolyzer flows through a pipeline to the gas-liquid separation device for separation. The gas-liquid separation device in this embodiment actually utilizes the characteristic that hydrogen is insoluble in water at room temperature. Of course, other physical separation methods can also be used. The hydrogen and part of the water vapor generated in the electrolyzer are separated by the gas-liquid separation device, and the separated hydrogen can flow to the subsequent hydrogen storage simulation component, while the separated water flows to the air inlet port of the water tank through the liquid outlet of the gas-liquid separation device.

[0031] It should be noted that, in order to prevent the liquid in the electrolytic cell from being mixed with impurities in this embodiment, a filter is provided on the pipeline between the water pump and the electrolytic cell, and the filter can filter the liquid entering the electrolytic cell.

[0032] More specifically, the hydrogen storage simulation component described in this embodiment is mainly used to simulate the hydrogen storage process to achieve electricity-to-hydrogen energy storage.

[0033] The hydrogen storage simulation component includes a hydrogen storage tank and two sets of flow meters. The gas input port of the hydrogen storage tank is connected to the first flow meter upstream, and the first flow meter is connected to the hydrogen outlet of the gas-liquid separation device. In this embodiment, the first flow meter is preferably a mechanical flow meter, and the first flow meter is used to monitor the flow rate and stability of hydrogen produced by the hydrogen production simulation component. The gas output port of the hydrogen storage tank is connected to the second flow meter downstream, and the second flow meter is connected to the hydrogen simulation component. In this embodiment, the second flow meter is preferably a digitally controlled flow meter, and the second flow meter controls the quantitative flow of hydrogen into the fuel cell according to the internal pressure signal of the fuel cell. Furthermore, the hydrogen storage tank in this embodiment is provided with a pressure gauge, and the pressure gauge can be used to monitor the amount of hydrogen inside the hydrogen storage tank.

[0034] In more detail, the hydrogen simulation component described in this embodiment is used to simulate the fuel cell system to realize the process of converting hydrogen energy into electrical energy. The hydrogen simulation component includes a fuel cell and a variable load, wherein the fuel cell is connected to a second flow meter to receive hydrogen delivered from the second flow meter; the fuel cell is connected to the variable load, and the fuel cell provides electricity to the variable load. It should be noted that the variable load described in this embodiment preferably uses several groups of LED lamp beads connected in parallel, and each group of LED lamp beads is respectively connected to a group of control switches to control the on and off of the current of the LED lamp beads.

[0035] Furthermore, the hydrogen simulation component also includes a fuel controller and an air pump, the air inlet of the air pump is connected to the fuel cell, and the air outlet of the air pump is connected to a group of air inlet ports of the water tank in the hydrogen production simulation component. After the hydrogen enters the fuel cell, part of the hydrogen will be directly converted into electrical energy through electrochemical reactions, while part of the hydrogen and other residual gases will be extracted through the air pump; the fuel controller is respectively connected to the fuel cell and the air pump, and the operation of the air pump is controlled by the fuel controller. By controlling the internal air pressure of the fuel cell, hydrogen can be driven to flow in, thereby controlling the amount of gas participating in the reaction inside the fuel cell.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A hydrogen energy storage peak load regulation device, characterized in that , including a base plate, a hydrogen production simulation component, a hydrogen storage simulation component and a hydrogen use simulation component, wherein the hydrogen production simulation component, the hydrogen storage simulation component and the hydrogen use simulation component are all fixed to the base plate; The hydrogen production simulation component includes a DC power supply, a generator, an electrolyzer, a water pump, a water tank and a gas-liquid separation device, wherein the DC power supply and the generator are respectively connected to the electrolyzer; the liquid in the water tank is driven into the electrolyzer by the water pump, and hydrogen and oxygen are generated by the electrolyzer, the hydrogen generated by the electrolyzer flows to the gas-liquid separation device through a pipeline for separation, and the separated hydrogen flows to the hydrogen storage simulation component, and the oxygen generated by the electrolyzer flows to the water tank through a pipeline; The hydrogen storage simulation component includes a hydrogen storage tank and two sets of flow meters, wherein the gas input port of the hydrogen storage tank is connected to a first flow meter upstream, and the first flow meter is connected to the hydrogen outlet of the gas-liquid separation device; the gas output port of the hydrogen storage tank is connected to a second flow meter downstream, and the second flow meter is connected to the hydrogen simulation component; The hydrogen simulation component includes a fuel cell and a variable load. The fuel cell is connected to the second flow meter to receive hydrogen delivered from the second flow meter. The fuel cell is connected to the variable load to provide power to the variable load.

2. The hydrogen energy storage peak-shaving device according to claim 1, characterized in that: The hydrogen simulation component also includes a fuel controller and an air pump, the air inlet of the air pump is connected to the fuel cell, and the air outlet of the air pump is connected to the water tank of the hydrogen production simulation component; the fuel controller is connected to the fuel cell and the air pump, respectively, and the operation of the air pump is controlled by the fuel controller, thereby controlling the amount of gas participating in the reaction inside the fuel cell.

3. The hydrogen energy storage peak-shaving device according to claim 1, characterized in that: The variable load uses a plurality of groups of LED lamp beads connected in parallel, and each group of LED lamp beads is respectively connected to a group of control switches to control the on and off of the current of the LED lamp beads.

4. The hydrogen energy storage peak-shaving device according to claim 1, characterized in that: The generator is a hand-cranked generator to simulate an unstable power source.

5. The hydrogen energy storage peak-shaving device according to claim 1, characterized in that: The first flow meter is a mechanical flow meter, and the flow rate and stability of the hydrogen generated by the hydrogen production simulation component are monitored by the first flow meter.

6. The hydrogen energy storage peak-shaving device according to claim 1, characterized in that: The second flow meter is a digitally controlled flow meter, and the second flow meter controls the quantitative flow of hydrogen into the fuel cell according to the internal pressure signal of the fuel cell.

7. The hydrogen energy storage peak-shaving device according to claim 1, characterized in that: The water tank includes a water outlet port at the bottom and a water return port at the top, the water outlet port of the water tank is connected to the water inlet of the water pump through a pipeline; the liquid outlet for the remaining liquid in the electrolytic cell is connected to the water return port of the water tank.

8. The hydrogen energy storage peak-shaving device according to claim 2, characterized in that: The water tank also includes an exhaust port and an air inlet port located at the top, the exhaust port is used to exhaust the gas in the water tank; the oxygen outlet of the electrolyzer, the liquid outlet of the gas-liquid separation device and the air outlet of the air pump are respectively connected to a group of air inlet ports.

9. The hydrogen energy storage peak-shaving device according to claim 1, characterized in that: The hydrogen storage tank is provided with a pressure gauge, and the pressure gauge is used to monitor the amount of hydrogen inside the hydrogen storage tank.

10. The hydrogen energy storage peak-shaving device according to claim 1, characterized in that: A filter is provided on the pipeline between the water pump and the electrolytic cell, and the filter is used to filter the liquid entering the electrolytic cell.

Images