Hydrogen energy afterburning device for continuously increasing temperature of photo-thermal hot water

Abstract

The utility model discloses a hydrogen energy afterburning device for continuously increasing the temperature of photo-thermal hot water, and relates to the field of solar heat utilization afterburning. In order to overcome the defects that an existing solar water heater is low in heating temperature, cannot meet industrial hot water and cannot fully utilize waste heat, a waste heat recovery unit is arranged on a combustion heat exchange chamber, a water outlet of the waste heat recovery unit is communicated with a water inlet of the solar water heater, and a heat exchange tube bundle is arranged in the combustion heat exchange chamber. A water outlet of the solar water heater is communicated with a water inlet of the heat exchange tube bundle, the hydrogen combustor is arranged in the combustion heat exchange chamber and located below the heat exchange tube bundle, and a gas outlet pipe of the hydrogen storage tank is communicated with a gas inlet pipe 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] The utility model relates to the field of solar heat utilization supplementary combustion, especially to a hydrogen energy supplementary combustion device for continuously improving photothermal hot water temperature. BACKGROUND

[0002] At present, the solar heat utilization system is mainly a low-temperature heat utilization system. Generally, a solar water heater (1) can heat hot water to a temperature of 50-60 DEG C, and a solar water heater with good performance can heat hot water to a temperature of 80-90 DEG C, which is generally not higher than 100 DEG C. These solar water heaters are mainly used in domestic fields such as family bathing. With the implementation of the "double carbon" goal, some industrial fields also begin to seek to use solar heating technology to reduce carbon emissions in the field. Generally, the temperature of the heat medium used in the industrial field is relatively high, generally greater than 100 DEG C, and some are even higher than 200-300 DEG C. Therefore, the current solar heat utilization technology cannot meet the utilization of solar energy in the industrial field.

[0003] Therefore, a hydrogen energy supplementary combustion device for continuously improving photothermal hot water temperature, which can fully utilize waste heat to improve water temperature and increase the outlet water temperature of a solar water heater, is needed. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses in order to solve the defect that the current solar water heater heating temperature is low, cannot satisfy industrial hot water, and cannot fully utilize waste heat, provides a hydrogen energy supplementary combustion device for continuously improving photothermal hot water temperature, which can fully utilize waste heat to improve water temperature and increase the outlet water temperature of a solar water heater.

[0005] The hydrogen energy supplementary combustion device for continuously improving photothermal hot water temperature, which comprises a solar water heater, a combustion heat exchange chamber, a hydrogen gas burner, a heat exchange tube bundle, a hydrogen storage tank and a waste heat recovery unit, the waste heat recovery unit is arranged on the combustion heat exchange chamber, the water outlet of the waste heat recovery unit is communicated with the water inlet of the solar water heater, the heat exchange tube bundle is arranged in the combustion heat exchange chamber, the water outlet of the solar water heater is communicated with the water inlet of the heat exchange tube bundle, the hydrogen gas burner is arranged in the combustion heat exchange chamber and below the heat exchange tube bundle, and the gas outlet pipe of the hydrogen storage tank is communicated with the gas inlet pipe of the hydrogen gas burner.

[0006] Further, a smoke exhaust pipe is arranged on the combustion heat exchange chamber, and the waste heat recovery unit is arranged around the smoke exhaust pipe.

[0007] Further, a hydrogen conveying pipeline is arranged between the hydrogen storage tank and the hydrogen gas burner.

[0008] Further, an adjusting door and a safety door are further included, and the adjusting door and the safety door are arranged on the hydrogen conveying pipeline.

[0009] Furthermore, the pipe between the solar water heater and the heat exchange tube bundle is a low-temperature water pipe, and a low-temperature water regulating valve is installed on the low-temperature water pipe.

[0010] Furthermore, it also includes a high-temperature water outlet pipe, the outlet of the heat exchange tube bundle is connected to the high-temperature water outlet pipe, and a high-temperature water outlet regulating valve is provided on the high-temperature water outlet pipe.

[0011] Furthermore, it also includes a water chamber, which is disposed on the outer wall of the combustion heat exchange chamber.

[0012] Furthermore, the pipe between the waste heat recovery unit and the solar water heater is an inlet water pipe, and an inlet regulating valve is installed on the inlet water pipe.

[0013] The beneficial effects of this utility model are:

[0014] This invention relates to a device for supplementing combustion and heating hot water using hydrogen energy. This device can further increase the outlet water temperature of solar water heaters, expanding their application range to include industrial applications such as drying, disinfection, mariculture, and heating. By using the hydrogen-based supplementary combustion device described in this invention to increase the temperature of solar-thermal hot water, the outlet temperature of high-temperature hot water can be raised to 100–300°C through the supplementary combustion of the hydrogen burner. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a hydrogen refueling device that continuously increases the temperature of solar thermal hot water.

[0016] The components include: 1. Solar water heater; 2. Inlet water pipe; 3. Cold water pipe; 4. Combustion heat exchange chamber; 5. Water chamber; 6. Hydrogen burner; 7. Heat exchange tube bundle; 8. Low-temperature water regulating valve; 9. Low-temperature water pipeline; 10. High-temperature water outlet pipe; 11. High-temperature water outlet regulating valve; 12. Hydrogen storage tank; 13. Regulating valve; 14. Safety valve; 15. Hydrogen transmission pipeline; 16. Waste heat recovery unit; and 17. Exhaust pipe. Detailed Implementation

[0017] The following merely is a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. The following described embodiments are merely used for explaining the present application, but cannot be explained as the limitation of the present application, and the protection scope of the present application should be subject to the protection scope of the claims. The embodiments of the present application are described in detail below, in order to facilitate the description of the present application and simplify the description, the technical terms used in the specification of the present application should be interpreted in a broad sense, including but not limited to the conventional replacement schemes not mentioned in the present application, and including the direct implementation mode and the indirect implementation mode.

[0018] Embodiment 1

[0019] In combination Figure 1 In this embodiment, the hydrogen energy afterburning device for continuously improving the temperature of photo-thermal hot water is disclosed, which comprises a solar water heater 1, a combustion heat exchange chamber 4, a hydrogen gas burner 6, a heat exchange tube bundle 7, a hydrogen storage tank 12 and a waste heat recovery unit 16. The waste heat recovery unit 16 is arranged on the combustion heat exchange chamber 4, the water outlet of the waste heat recovery unit 16 is communicated with the water inlet of the solar water heater 1, the heat exchange tube bundle 7 is arranged in the combustion heat exchange chamber 4, the water outlet of the solar water heater 1 is communicated with the water inlet of the heat exchange tube bundle 7, the hydrogen gas burner 6 is arranged in the combustion heat exchange chamber 4 and located in the hydrogen storage tank 12. The gas outlet pipe of the hydrogen storage tank 12 is communicated with the gas inlet pipe of the hydrogen gas burner 6. In this embodiment, the step-by-step heating and heat supplementing technology is adopted. The step-by-step heating and heat supplementing technology adopts the photo-thermal hot water solar water heater 1 as the primary heating, adopts the hydrogen gas burner 6 as the afterburning heating, and determines the heat of the heating and heat supplementing according to the temperature range of the application medium of the end user. The hot water of the primary heating is used as the input medium of the combustion heat exchange chamber 4, and the outlet pipe of the solar water heater 1, i.e. the low-temperature water pipeline 9 is connected to the water supply inlet of the combustion heat exchange chamber 4.

[0020] The combustion heat exchange chamber 4 is provided with a smoke exhaust pipe 17, and the waste heat recovery unit 16 is arranged around the smoke exhaust pipe 17. The cold water input into the waste heat recovery unit 16 is preheated for the first time by the heat of the smoke exhaust pipe 17, and the waste heat of the smoke exhaust pipe 17 is fully utilized.

[0021] The hydrogen storage tank 12 and the hydrogen gas burner 6 are provided with a hydrogen conveying pipeline 15. The hydrogen storage tank 12 is connected to the hydrogen conveying pipeline 15, the hydrogen conveying pipeline 15 is connected to the hydrogen gas burner 6, the hydrogen gas burner 6 is fixed to the lower side of the combustion heat exchange chamber 4, the heat exchange tube bundle 7 is arranged in the combustion heat exchange chamber 4, and the smoke exhaust pipe 17 is located at the upper part of the combustion heat exchange chamber 4. The hydrogen conveying pipeline 15 is provided with a shut-off safety valve and an adjusting valve.

[0022] Also included are the regulating door 13 and the safety door 14, which are arranged on the hydrogen delivery pipe 15. The regulating door 13 can adjust the hydrogen flow by adjusting the opening of the valve according to the use demand of hydrogen, so as to meet the demand of different use scenarios. The safety door 14 ensures that the hydrogen system works within the predetermined range by setting the valve opening pressure and closing pressure.

[0023] The pipeline between the solar water heater 1 and the heat exchange tube bundle 7 is the low-temperature water pipeline 9, on which a low-temperature water regulating valve 8 is arranged.

[0024] Also included is the high-temperature water outlet pipe 10, the outlet of the heat exchange tube bundle 7 is communicated with the high-temperature water outlet pipe 10, and a high-temperature water outlet regulating valve 11 is arranged on the high-temperature water outlet pipe 10.

[0025] Also included is the water chamber 5, which is arranged on the outer wall of the combustion heat exchange chamber 4. The water chamber 5 is a water cooling jacket, which can help to adjust the temperature distribution in the combustion heat exchange chamber 4, so as to make it more uniform. It also helps to improve the combustion efficiency and stability.

[0026] The pipeline between the waste heat recovery unit 16 and the solar water heater 1 is the inlet water pipe 2, on which an inlet regulating valve is arranged.

[0027] The hydrogen energy afterburning device for continuously improving the temperature of the photo-thermal hot water in the embodiment recovers the waste heat of the hot flue gas after the cold water from the cold water pipe 3 passes through the waste heat recovery unit 16 in the smoke exhaust pipe 17, and then enters the solar water heater 1. The solar water heater 1 is used as a primary hot water heater to become low-temperature hot water, which is introduced into the inlet of the combustion heat exchange chamber 4 as water supply. The low-temperature hot water enters the heat exchange tube bundle 7 of the combustion heat exchange chamber 4, flows in the heat exchange tube bundle 7, absorbs the heat released by the combustion of hydrogen, and the temperature rises. After meeting the requirements of the end user, the high-temperature hot water is discharged. The hydrogen in the hydrogen storage tank 12 is introduced into the hydrogen burner 6 through the hydrogen delivery pipe 15, and is automatically burned in the combustion heat exchange chamber 4. The hot flue gas generated flows outside the heat exchange tube bundle 7 of the combustion heat exchange chamber 4, heats the hot water flowing in the heat exchange tube bundle 7, and increases the temperature of the hot water. The hot flue gas discharging heat reduces the temperature, enters the waste heat recovery unit 16 in the smoke exhaust pipe 17, heats the cold water before the primary heating of the solar water heater 1, and then flows out of the waste heat recovery unit 16 and is discharged from the smoke exhaust pipe 17.

Claims

1. A hydrogen energy afterburner device for continuously increasing the temperature of photo-thermal hot water, characterized by, The application relates to a solar water heater (1), a combustion heat exchange chamber (4), a hydrogen burner (6), a heat exchange pipe bundle (7), a hydrogen storage tank (12) and a waste heat recovery unit (16), wherein the waste heat recovery unit (16) is arranged on the combustion heat exchange chamber (4), the water outlet of the waste heat recovery unit (16) is communicated with the water inlet of the solar water heater (1), the heat exchange pipe bundle (7) is arranged in the combustion heat exchange chamber (4), the water outlet of the solar water heater (1) is communicated with the water inlet of the heat exchange pipe bundle (7), the hydrogen burner (6) is arranged in the combustion heat exchange chamber (4) and below the heat exchange pipe bundle (7), and the gas outlet of the hydrogen storage tank (12) is communicated with the gas inlet of the hydrogen burner (6).

2. A hydrogen supplemental combustion device for continuously increasing the temperature of photo-thermal hot water according to claim 1, characterized in that, The combustion heat exchange chamber (4) is provided with a smoke exhaust pipe (17), and the waste heat recovery unit (16) is arranged around the smoke exhaust pipe (17).

3. The hydrogen supplemental combustion device for continuously increasing the temperature of the photo-thermal hot water according to claim 1, characterized in that, A hydrogen conveying pipeline (15) is arranged between the hydrogen storage tank (12) and the hydrogen burner (6).

4. A hydrogen supplemental combustion device for continuously increasing the temperature of photo-thermal hot water according to claim 3, characterized in that, Adjusting doors (13) and safety doors (14) are further arranged on the hydrogen conveying pipeline (15).

5. A hydrogen supplemental combustion device for continuously increasing the temperature of photo-thermal hot water according to claim 1, characterized in that, The pipeline between the solar water heater (1) and the heat exchange pipe bundle (7) is a low-temperature water pipeline (9), and a low-temperature water adjusting valve (8) is arranged on the low-temperature water pipeline (9).

6. A hydrogen supplemental combustion device for continuously increasing the temperature of photo-thermal hot water according to claim 1, characterized in that, A high-temperature water leading-out pipe (10) is further arranged, the outlet of the heat exchange pipe bundle (7) is communicated with the high-temperature water leading-out pipe (10), and a high-temperature water outlet adjusting valve (11) is arranged on the high-temperature water leading-out pipe (10).

7. The hydrogen supplemental combustion device for continuously increasing the temperature of the photo-thermal hot water according to claim 1, characterized by, A water chamber (5) is further arranged on the outer wall of the combustion heat exchange chamber (4).

8. The hydrogen supplemental combustion device for continuously increasing the temperature of the photo-thermal hot water according to claim 1, characterized by, The pipeline between the waste heat recovery unit (16) and the solar water heater (1) is an inlet water pipeline (2), and an inlet adjusting valve is arranged on the inlet water pipeline (2).

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