Hydrogen energy afterburning temperature control system

Abstract

The utility model discloses a hydrogen energy afterburning temperature control system, and relates to the field of solar heat utilization afterburning. In order to overcome the defects that the heating temperature of an existing solar water heater is low, industrial hot water cannot be met, and the water temperature cannot be accurately controlled, the middle section of a water outlet pipe of the solar water heater penetrates through a combustion heating chamber, and a hydrogen combustor is arranged in the combustion heating chamber and located below the water outlet pipe of the solar water heater. A gas outlet pipe of the hydrogen storage tank is communicated with a gas inlet pipe of the hydrogen combustor, the hydrogen flow controller is arranged between the hydrogen storage tank and the hydrogen combustor, and the central processing unit is used for controlling afterburning heat of the hydrogen combustor according to heat absorption capacity of the water inlet side of the combustion heating chamber and heat release capacity and smoke exhaust heat dissipation capacity of the hydrogen combustor. The solar water heater is mainly used for conducting afterburning and temperature increasing on the water outlet temperature of the solar water heater through hydrogen energy.

Description

Technical Field

[0001] This utility model relates to the field of solar thermal utilization combustion supplementation, and in particular to a hydrogen energy combustion supplementation temperature control system. Background Technology

[0002] Currently, solar thermal utilization systems are mainly low-temperature systems. Generally, solar water heaters can heat water to an outlet temperature of 50-60℃, with better-performing models reaching 80-90℃, but rarely exceeding 100℃. These solar water heaters are primarily used in residential bathing and other civilian applications. With the implementation of "dual carbon" targets, some industrial sectors are also seeking to adopt solar heating technology to reduce their carbon emissions. Generally, the temperature of the heat transfer medium used in industrial sectors is relatively high, typically exceeding 100℃, and sometimes even surpassing 200-300℃. Therefore, current solar thermal utilization technology can no longer meet the needs of industrial sectors for solar energy utilization.

[0003] Therefore, there is a need for a hydrogen combustion temperature control system that can accurately control water temperature and hydrogen combustion, improve the outlet water temperature of solar water heaters, and ensure high safety. Utility Model Content

[0004] To address the shortcomings of existing solar water heaters, such as low heating temperature, inability to meet industrial hot water needs, and inability to precisely control water temperature, this invention provides a hydrogen combustion temperature control system that can precisely control water temperature and hydrogen combustion, improve the outlet water temperature of solar water heaters, and offers high safety.

[0005] This utility model discloses a hydrogen-powered afterburning temperature control system, comprising a solar water heater, a combustion heating chamber, a hydrogen burner, a hydrogen flow controller, a hydrogen storage tank, and a central processing unit. The outlet pipe of the solar water heater passes through the combustion heating chamber in its middle section. The hydrogen burner is located within the combustion heating chamber and below the outlet pipe of the solar water heater. The outlet pipe of the hydrogen storage tank is connected to the inlet pipe of the hydrogen burner. The hydrogen flow controller is positioned between the hydrogen storage tank and the hydrogen burner. The central processing unit controls the afterburning heat of the hydrogen burner based on the heat absorbed by the water inlet side of the combustion heating chamber, the heat released by the hydrogen burner, and the heat dissipation from the exhaust gases.

[0006] Furthermore, the central processing unit uses a heat balance algorithm to balance the heat absorbed by the water inlet side of the combustion heating chamber, the heat released by the hydrogen burner, and the heat dissipation of the exhaust gas, thereby calculating the supplementary combustion heat of the hydrogen burner.

[0007] Furthermore, it also includes an inlet water temperature acquisition unit, an inlet water flow meter acquisition unit, and an outlet water temperature acquisition unit. The inlet water temperature acquisition unit and the inlet water flow meter acquisition unit are both installed on the inlet water pipe of the solar water heater, and the outlet water temperature acquisition unit is installed on the side of the outlet water pipe of the solar water heater that extends out of the combustion heating chamber. The output terminals of the inlet water temperature acquisition unit, the inlet water flow meter acquisition unit, and the outlet water temperature acquisition unit are connected to the input terminal of the central processing unit. The central processing unit uses the inlet water temperature acquisition unit, the outlet water temperature acquisition unit, and the inlet water flow meter acquisition unit to calculate the heat absorption on the inlet side of the combustion heating chamber.

[0008] Furthermore, it also includes a furnace flue gas temperature acquisition unit, an ambient temperature acquisition unit, a hydrogen inlet temperature acquisition unit, and a hydrogen metering flow acquisition unit. The furnace flue gas temperature acquisition unit is located inside the furnace of the hydrogen burner, the ambient temperature acquisition unit is located at the air inlet of the hydrogen burner, and the hydrogen inlet temperature acquisition unit and the hydrogen metering flow acquisition unit are both located between the hydrogen flow controller and the hydrogen storage tank. The output terminals of the furnace flue gas temperature acquisition unit, the ambient temperature acquisition unit, the hydrogen inlet temperature acquisition unit, and the hydrogen metering flow acquisition unit are connected to the input terminal of the central processing unit. The central processing unit uses the furnace flue gas temperature acquisition unit, the ambient temperature acquisition unit, the hydrogen inlet temperature acquisition unit, and the hydrogen metering flow acquisition unit to obtain the furnace flue gas temperature, the ambient temperature, the hydrogen inlet temperature, and the hydrogen calculated flow rate to calculate the heat release of the hydrogen burner.

[0009] Furthermore, the central processing unit uses the rate of change signals of the ambient temperature acquisition unit and the rate of change signals of the outlet water temperature acquisition unit as feedforward signals for the controller to improve the control response speed.

[0010] Furthermore, it also includes an outlet flue gas temperature acquisition unit and an outlet flue gas oxygen content acquisition unit. Both the outlet flue gas temperature acquisition unit and the outlet flue gas oxygen content acquisition unit are located at the flue gas outlet of the hydrogen burner. The output terminals of both the outlet flue gas temperature acquisition unit and the outlet flue gas oxygen content acquisition unit are connected to the input terminal of the central processing unit. The central processing unit uses the outlet flue gas temperature acquisition unit and the outlet flue gas oxygen content acquisition unit to obtain the outlet flue gas temperature and the outlet flue gas oxygen content acquisition unit to calculate the exhaust heat dissipation of the combustion heating chamber.

[0011] The beneficial effects of this utility model are:

[0012] This invention utilizes supplementary combustion heating in industrial applications to further increase the temperature of solar thermal water, meeting the heating needs of industrial sectors. This invention not only fully utilizes a hydrogen-based supplementary combustion system to enhance the water temperature of the solar water heater but also strictly controls hydrogen leakage to ensure heating safety. Furthermore, by controlling the hydrogen combustion time according to the temperature requirements of industrial processes, the outlet water temperature of the solar water heater can be further increased and precisely controlled, expanding the application range of solar water heaters to include industrial applications such as drying, disinfection, seawater aquaculture, and heating. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a hydrogen afterburning temperature control system.

[0014] In the diagram, 1. Solar water heater; 2. Inlet water temperature acquisition unit; 3. Inlet water flow meter acquisition unit; 4. Combustion heating chamber; 5. Hydrogen burner; 6. Furnace flue gas temperature acquisition unit; 7. Ambient temperature acquisition unit; 8. Hydrogen flow controller; 9. Hydrogen inlet temperature acquisition unit; 10. Hydrogen metering flow acquisition unit; 11. Hydrogen storage tank; 12. Outlet water temperature acquisition unit; 13. Outlet flue gas temperature acquisition unit; 14. Outlet flue gas oxygen content acquisition unit; 15. Central processing unit. Detailed Implementation

[0015] The following are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. The embodiments described below are only for explaining this utility model and should not be construed as limiting this utility model. The scope of protection of this utility model should be determined by the scope of the claims. The embodiments of this utility model are described in detail below. In order to facilitate the description of this utility model and simplify the description, the technical terms used in the specification of this utility model should be interpreted broadly, including but not limited to conventional alternatives not mentioned in this application, as well as direct and indirect implementation methods.

[0016] Example 1

[0017] Combination Figure 1This embodiment discloses a hydrogen-powered afterburning temperature control system, comprising a solar water heater 1, a combustion heating chamber 4, a hydrogen burner 5, a hydrogen flow controller 8, a hydrogen storage tank 11, and a central processing unit 15. The middle section of the outlet pipe of the solar water heater 1 passes through the combustion heating chamber 4. The hydrogen burner 5 is disposed within the combustion heating chamber 4 and located below the outlet pipe of the solar water heater 1. The outlet pipe of the hydrogen storage tank 11 is connected to the inlet pipe of the hydrogen burner 5. The hydrogen flow controller 8 is disposed between the hydrogen storage tank 11 and the hydrogen burner 5. The central processing unit 15 is used to control the afterburning heat of the hydrogen burner 5 based on the heat absorption on the water inlet side of the combustion heating chamber 4, the heat release of the hydrogen burner 5, and the exhaust heat dissipation.

[0018] The central processing unit 15 employs a heat balance algorithm to balance the heat absorbed by the water inlet side of the combustion heating chamber 4, the heat released by the hydrogen burner 5, and the heat dissipation from the exhaust gas, thereby calculating the supplementary combustion heat of the hydrogen burner 5. This heat balance algorithm considers both the heat absorbed to raise the water temperature and the heat released by hydrogen combustion, and balances these with exhaust gas losses and heat dissipation losses. The central processing unit 15 receives a flow balance signal to control the valve of the hydrogen flow controller 8, thereby controlling the supplementary combustion heat of the hydrogen burner 5 and controlling the outlet water temperature.

[0019] It also includes an inlet water temperature acquisition unit 2, an inlet water flow meter acquisition unit 3, and an outlet water temperature acquisition unit 12. The inlet water temperature acquisition unit 2 and the inlet water flow meter acquisition unit 3 are both installed on the inlet water pipe of the solar water heater 1, and the outlet water temperature acquisition unit 12 is installed on the side of the outlet water pipe of the solar water heater 1 that extends out of the combustion heating chamber 4. The output terminals of the inlet water temperature acquisition unit 2, the inlet water flow meter acquisition unit 3, and the outlet water temperature acquisition unit 12 are connected to the input terminal of the central processing unit 15. The central processing unit 15 uses the inlet water temperature acquisition unit 2, the outlet water temperature acquisition unit 12, and the inlet water flow meter acquisition unit 3 to calculate the heat absorption on the inlet side of the combustion heating chamber 4.

[0020] When a heat user needs to increase the outlet water temperature, the outlet water temperature acquisition unit 12 first sends a signal to the central processing unit 15. The central processing unit 15 then increases the hydrogen flow rate through the hydrogen flow controller 8, increasing combustion and thus increasing the heat released during combustion. This, in turn, increases the heat absorbed by the outlet water, gradually raising the outlet water temperature to meet external demands. In actual operation, when the inlet water temperature acquisition unit 2 detects an increase in the inlet water temperature signal, the thermal balance of the central processing unit 15 is disrupted. The central processing unit 15 then reduces the hydrogen flow rate through the hydrogen flow controller 8, controlling combustion and reducing the heat released during combustion to maintain a constant outlet water temperature and meet external demands.

[0021] In actual operation, when an increase in the rate of change of the outlet water temperature is detected, such as an accelerated increase in the outlet water temperature per unit time, the signal is quickly fed back to the central processing unit 15. The central processing unit 15 then quickly reduces the hydrogen flow rate through the hydrogen flow controller 8 to control combustion, reduce the heat released by combustion, control the heat absorbed by the outlet water temperature, and keep the outlet water temperature constant to meet external requirements.

[0022] It also includes a furnace flue gas temperature acquisition unit 6, an ambient temperature acquisition unit 7, a hydrogen inlet temperature acquisition unit 9, and a hydrogen metering flow acquisition unit 10. The furnace flue gas temperature acquisition unit 6 is located inside the furnace of the hydrogen burner 5. The ambient temperature acquisition unit 7 is located at the air inlet of the hydrogen burner 5. The hydrogen inlet temperature acquisition unit 9 and the hydrogen metering flow acquisition unit 10 are both located between the hydrogen flow controller 8 and the hydrogen storage tank 11. The output terminals of the furnace flue gas temperature acquisition unit 6, the ambient temperature acquisition unit 7, the hydrogen inlet temperature acquisition unit 9, and the hydrogen metering flow acquisition unit 10 are connected to the input terminal of the central processing unit 15. The central processing unit 15 uses the furnace flue gas temperature, ambient temperature, hydrogen inlet temperature, and hydrogen metering flow acquisition unit 10 to obtain the furnace flue gas temperature, ambient temperature, hydrogen inlet temperature, and hydrogen calculated flow rate to calculate the heat release of the hydrogen burner 5, that is, to calculate the heat released by hydrogen combustion and the heat transfer.

[0023] The central processing unit 15 uses the rate of change signal of the ambient temperature acquisition unit 7 and the rate of change signal of the outlet water temperature acquisition unit 12 as feedforward signals for the controller to improve the control response speed.

[0024] It also includes an outlet flue gas temperature acquisition unit 13 and an outlet flue gas oxygen content acquisition unit 14. Both the outlet flue gas temperature acquisition unit 13 and the outlet flue gas oxygen content acquisition unit 14 are located at the flue gas outlet of the hydrogen burner 5. The output terminals of the outlet flue gas temperature acquisition unit 13 and the outlet flue gas oxygen content acquisition unit 14 are connected to the input terminal of the central processing unit 15. The central processing unit 15 uses the outlet flue gas temperature acquisition unit 13 and the outlet flue gas oxygen content acquisition unit 14 to obtain the outlet flue gas temperature and the outlet flue gas oxygen content to calculate the exhaust heat dissipation of the combustion heating chamber 4, that is, to determine the exhaust loss and heat dissipation loss.

[0025] In actual operation, when the outlet flue gas temperature acquisition unit 13 detects an increase in the outlet flue gas temperature signal, if the outlet water temperature of the hydrogen burner 5 remains unchanged, it indicates an increase in exhaust gas loss, prompting the user to check the hydrogen burner 5 and control the exhaust gas temperature. If the outlet water temperature of the hydrogen burner 5 decreases at this time, the central processing unit 15 increases the hydrogen flow rate through the hydrogen flow controller 8, intensifies combustion, increases the heat released by combustion, and increases the heat absorbed by the outlet water, causing the outlet water temperature to gradually rise to meet external demands.

Claims

1. A hydrogen-powered afterburning temperature control system, characterized in that, The system includes a solar water heater (1), a combustion heating chamber (4), a hydrogen burner (5), a hydrogen flow controller (8), a hydrogen storage tank (11), and a central processing unit (15). The middle section of the outlet pipe of the solar water heater (1) passes through the combustion heating chamber (4). The hydrogen burner (5) is located in the combustion heating chamber (4) and below the outlet pipe of the solar water heater (1). The gas outlet pipe of the hydrogen storage tank (11) is connected to the gas inlet pipe of the hydrogen burner (5). The hydrogen flow controller (8) is located between the hydrogen storage tank (11) and the hydrogen burner (5). The central processing unit (15) is used to control the supplementary combustion heat of the hydrogen burner (5) based on the heat absorption of the water inlet side of the combustion heating chamber (4), the heat release of the hydrogen burner (5), and the heat dissipation of the exhaust gas.

2. The hydrogen afterburning temperature control system according to claim 1, characterized in that, The central processing unit (15) uses a heat balance algorithm to balance the heat absorption of the water inlet side of the combustion heating chamber (4), the heat release of the hydrogen burner (5), and the heat dissipation of the exhaust gas, thereby calculating the supplementary combustion heat of the hydrogen burner (5).

3. The hydrogen-powered afterburning temperature control system according to claim 1, characterized in that, It also includes an inlet water temperature acquisition unit (2), an inlet water flow meter acquisition unit (3), and an outlet water temperature acquisition unit (12). The inlet water temperature acquisition unit (2) and the inlet water flow meter acquisition unit (3) are both installed on the inlet water pipe of the solar water heater (1). The outlet water temperature acquisition unit (12) is installed on the side of the outlet water pipe of the solar water heater (1) that extends out of the combustion heating chamber (4). The output terminals of the inlet water temperature acquisition unit (2), the inlet water flow meter acquisition unit (3), and the outlet water temperature acquisition unit (12) are connected to the input terminal of the central processing unit (15). The central processing unit (15) uses the inlet water temperature acquisition unit (2), the outlet water temperature acquisition unit (12), and the inlet water flow meter acquisition unit (3) to calculate the heat absorption on the inlet side of the combustion heating chamber (4).

4. The hydrogen-powered afterburning temperature control system according to claim 3, characterized in that, It also includes a furnace flue gas temperature acquisition unit (6), an ambient temperature acquisition unit (7), a hydrogen inlet temperature acquisition unit (9), and a hydrogen metering flow acquisition unit (10). The furnace flue gas temperature acquisition unit (6) is located inside the furnace of the hydrogen burner (5). The ambient temperature acquisition unit (7) is located at the air inlet of the hydrogen burner (5). The hydrogen inlet temperature acquisition unit (9) and the hydrogen metering flow acquisition unit (10) are both located between the hydrogen flow controller (8) and the hydrogen storage tank (11). The output terminals of the collection unit (6), the ambient temperature acquisition unit (7), the hydrogen inlet temperature acquisition unit (9), and the hydrogen metering flow acquisition unit (10) are connected to the input terminal of the central processing unit (15). The central processing unit (15) uses the furnace flue gas temperature acquisition unit (6), the ambient temperature acquisition unit (7), the hydrogen inlet temperature acquisition unit (9), and the hydrogen metering flow acquisition unit (10) to obtain the furnace flue gas temperature, the ambient temperature, the hydrogen inlet temperature, and the hydrogen calculated flow rate to calculate the heat release of the hydrogen burner (5).

5. A hydrogen-powered afterburning temperature control system according to claim 4, characterized in that, The central processing unit (15) uses the rate of change signal of the ambient temperature acquisition unit (7) and the rate of change signal of the outlet water temperature acquisition unit (12) as feedforward signals for the controller to improve the control response speed.

6. The hydrogen-powered afterburning temperature control system according to claim 1, characterized in that, It also includes an outlet flue gas temperature acquisition unit (13) and an outlet flue gas oxygen content acquisition unit (14). The outlet flue gas temperature acquisition unit (13) and the outlet flue gas oxygen content acquisition unit (14) are both located at the outlet of the hydrogen burner (5). The output terminals of the outlet flue gas temperature acquisition unit (13) and the outlet flue gas oxygen content acquisition unit (14) are both connected to the input terminal of the central processing unit (15). The central processing unit (15) uses the outlet flue gas temperature acquisition unit (13) and the outlet flue gas oxygen content acquisition unit (14) to obtain the outlet flue gas temperature and the outlet flue gas oxygen content to calculate the exhaust heat dissipation of the combustion heating chamber (4).

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