Integrated photovoltaic hydrogen production and dynamic blending natural gas-hydrogen gas supply station

Abstract

This utility model discloses a natural gas-hydrogen blending gas supply station integrating photovoltaic hydrogen production and dynamic blending, including a green hydrogen production and storage section, a natural gas storage and pressure regulation section, and a dynamic proportioning blending device. Both the green hydrogen production and storage section and the natural gas storage and pressure regulation section are connected to the dynamic proportioning blending device. The output terminals of the hydrogen and natural gas inputs to the dynamic proportioning blending device are linked and controlled. The dynamic proportioning valves at the output terminals of the green hydrogen production and storage section and the natural gas storage and pressure regulation section are dynamically adjusted according to the pressure feedback controller installed in the dynamic proportioning blending device. The application of this utility model can solve the technical problems of existing natural gas-hydrogen blending supply systems, such as reliance on external hydrogen source transportation, lagging hydrogen blending ratio adjustment, and low efficiency of multi-module collaboration, achieving precise control of the hydrogen blending ratio and low-carbon operation.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production and dynamic blending technology, and in particular to a natural gas-hydrogen mixed gas supply station that integrates photovoltaic hydrogen production and dynamic blending. Background Technology

[0002] Currently, natural gas blending with hydrogen supply technology mainly relies on a single external gas source, such as natural gas pipelines plus hydrogen tank trucks, or the mixing method is mostly static proportion blending, such as fixed proportion valves, mechanical mixing tanks, and static diversion to achieve blending. This results in the existing natural gas blending with hydrogen ratio adjustment being lagging and dependent on external hydrogen source supply.

[0003] In practical applications, the aforementioned existing technologies have the following drawbacks:

[0004] 1. Low mixing accuracy, specifically: the static mixing device cannot respond to gas source fluctuations in real time, resulting in deviations in the hydrogen doping ratio;

[0005] 2. Reliance on external hydrogen sources, specifically: additional hydrogen transportation is required, increasing carbon emissions and costs;

[0006] 3. Poor system integration: The hydrogen production, pressure regulation, blending, and storage modules are scattered, occupying a large area and requiring complex operation and maintenance.

[0007] 4. It is impossible to achieve localized green preparation and dynamic blending control of hydrogen, and it lacks multi-module collaborative optimization design, resulting in low energy efficiency and poor adaptability.

[0008] Therefore, how to solve the technical problems of existing natural gas hydrogen blending supply systems, such as reliance on external transportation for hydrogen sources, lagging adjustment of hydrogen blending ratio, and low efficiency of multi-module collaboration, and achieve precise control of hydrogen blending ratio and low-carbon operation, has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0009] In view of the above-mentioned defects in the prior art, this utility model provides a natural gas hydrogen blending gas supply station that integrates photovoltaic hydrogen production and dynamic blending. The purpose is to solve the technical problems of existing natural gas hydrogen blending gas supply systems, such as reliance on external transportation for hydrogen sources, lagging adjustment of hydrogen blending ratio, and low efficiency of multi-module collaboration, so as to achieve precise control of hydrogen blending ratio and low-carbon operation.

[0010] To achieve the above objectives, this utility model discloses a natural gas-hydrogen mixture supply station integrating photovoltaic hydrogen production and dynamic blending, including a green hydrogen preparation and storage section, a natural gas storage and pressure regulation section, and a dynamic proportioning blending device.

[0011] The green hydrogen preparation and storage section and the natural gas storage and pressure regulation section are both connected to the dynamic proportioning blending device. The output terminals of the dynamic proportioning blending device that input hydrogen and natural gas are linked and controlled. The dynamic proportioning valves at the output terminals of the green hydrogen preparation and storage section and the natural gas storage and pressure regulation section are dynamically adjusted according to the pressure feedback controller set in the dynamic proportioning blending device.

[0012] Preferably, the green hydrogen preparation and storage section includes a photovoltaic power generation device, an electrolysis hydrogen production device, and a hydrogen storage tank connected in sequence.

[0013] More preferably, the output port of the dynamic proportioning blending device is equipped with a compressor, through which the blended hydrogen and natural gas are pressurized and transported to the mixer storage tank and mixer pipeline network.

[0014] A valve is provided between the mixer storage tank and the mixer pipeline network, which can be opened and closed according to the pressure of the mixer pipeline network;

[0015] The valve opens when the pressure in the mixer network is less than a preset value, connecting the mixer storage tank to the mixer network. It closes when the pressure in the mixer network is greater than or equal to the preset value, severing the connection between the mixer storage tank and the mixer network.

[0016] More preferably, the mixer tank is provided with a connector that can form a temporary connection with the gas filling equipment.

[0017] More preferably, the photovoltaic power generation device, the electrolytic hydrogen production device, the hydrogen storage tank, the natural gas storage and pressure regulation section, the dynamic proportioning blending device, and the compressor are integrated into an intrinsically safe housing.

[0018] The beneficial effects of this utility model are:

[0019] This invention enables more precise blending by employing a dynamic proportional valve and a pressure feedback controller, resulting in more accurate control of the hydrogen blending ratio.

[0020] This invention can achieve low-carbon emission reduction, with photovoltaic hydrogen production replacing external hydrogen source transportation, thereby reducing carbon emissions throughout the entire life cycle.

[0021] This invention offers lower operation and maintenance costs, and its modular integrated design reduces equipment maintenance complexity and improves operation and maintenance efficiency.

[0022] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0023] Figure 1A schematic diagram of an embodiment of the present invention is shown. Detailed Implementation

[0024] Example

[0025] like Figure 1 As shown, the integrated photovoltaic hydrogen production and dynamic blending natural gas hydrogen mixing gas supply station includes a green hydrogen production and storage section 1, a natural gas storage and pressure regulation section 2, and a dynamic proportioning blending device 3.

[0026] The green hydrogen preparation and storage section 1 and the natural gas storage and pressure regulation section 2 are both connected to the dynamic proportioning blending device 3. The output terminals of the dynamic proportioning blending device 3, which input hydrogen and natural gas, are linked and controlled. The dynamic proportioning valves at the output terminals of the green hydrogen preparation and storage section 1 and the natural gas storage and pressure regulation section 2 are dynamically adjusted according to the pressure feedback controller set in the dynamic proportioning blending device 3.

[0027] This invention mixes hydrogen with natural gas passing through the natural gas storage and pressure regulating section 2 in a dynamic proportioning blending device 3 according to a set ratio. Based on the gas source pressure, flow rate and hydrogen blending ratio monitored in real time by the dynamic proportioning blending device 3, the output of the green hydrogen preparation and storage section 1 and the natural gas storage and pressure regulating section 2 is dynamically adjusted to achieve real-time control of the hydrogen blending ratio. In practical applications, it can achieve control within the range of 5% to 30%.

[0028] In some embodiments, the green hydrogen preparation and storage section 1 includes a photovoltaic power generation device 11, an electrolysis hydrogen production device 12, and a hydrogen storage tank 13 connected in sequence.

[0029] This invention uses electricity generated by photovoltaic power generation to electrolyze water to produce hydrogen, and then mixes the produced hydrogen with natural gas in a dynamic proportioning mixing device 3 to achieve "instant production and use" of hydrogen.

[0030] In some embodiments, the output port of the dynamic proportioning blending device 3 is equipped with a compressor 4, which pressurizes and delivers the blended hydrogen and natural gas to the mixer storage tank 5 and the mixer pipeline network 6.

[0031] A valve is provided between the mixer storage tank 5 and the mixer pipeline 6, which can be opened and closed according to the pressure of the mixer pipeline 6;

[0032] The valve opens when the pressure in the mixer network 6 is less than the preset value, connecting the mixer storage tank 5 to the mixer network 6. It closes when the pressure in the mixer network 6 is greater than or equal to the preset value, cutting off the connection between the mixer storage tank 5 and the mixer network 6.

[0033] In some embodiments, the mixer tank 5 is provided with a connector that can form a temporary connection with the gas filling equipment 7.

[0034] In some embodiments, the photovoltaic power generation device 11, the electrolytic hydrogen production device 12, the hydrogen storage tank 13, the natural gas storage and pressure regulation section 2, the dynamic proportioning blending device 3, and the compressor 4 are integrated into an intrinsically safe housing.

[0035] In practical applications, the photovoltaic power generation device 11, the electrolytic hydrogen production device 12, the hydrogen storage tank 13, the natural gas storage and pressure regulation section 2, the dynamic proportioning blending device 3, and the compressor 4 are integrated into an intrinsically safe housing to form a skid-mounted platform. The platform is monitored by an intelligent control system, which can achieve multi-parameter collaborative optimization while reducing the footprint.

[0036] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A gas supply station integrating photovoltaic hydrogen production and dynamic blending of natural gas and hydrogen; characterized in that, It includes a green hydrogen preparation and storage section (1), a natural gas storage and pressure regulation section (2), and a dynamic proportioning blending device (3); The green hydrogen preparation and storage section (1) and the natural gas storage and pressure regulation section (2) are both connected to the dynamic proportioning blending device (3). The output terminals of the dynamic proportioning blending device (3) that input hydrogen and natural gas are linked and controlled. The dynamic proportioning valves at the output terminals of the green hydrogen preparation and storage section (1) and the natural gas storage and pressure regulation section (2) are dynamically adjusted according to the pressure feedback controller set in the dynamic proportioning blending device (3).

2. The integrated photovoltaic hydrogen production and dynamically blended natural gas-hydrogen mixture supply station according to claim 1, characterized in that, The green hydrogen preparation and storage section (1) includes a photovoltaic power generation device (11), an electrolytic hydrogen production device (12), and a hydrogen storage tank (13) connected in sequence.

3. The integrated photovoltaic hydrogen production and dynamically blended natural gas-hydrogen mixture supply station according to claim 2, characterized in that, The output port of the dynamic proportioning mixing device (3) is equipped with a compressor (4), through which the mixed hydrogen and natural gas are pressurized and transported to the mixer storage tank (5) and the mixer pipeline (6); A valve is provided between the mixer storage tank (5) and the mixer pipeline (6) that can be opened and closed according to the pressure of the mixer pipeline (6); The valve opens when the pressure in the mixer network (6) is less than a preset value, connecting the mixer storage tank (5) to the mixer network (6), and closes when the pressure in the mixer network (6) is greater than or equal to the preset value, cutting off the connection between the mixer storage tank (5) and the mixer network (6).

4. The integrated photovoltaic hydrogen production and dynamically blended natural gas-hydrogen mixture supply station according to claim 3, characterized in that, The mixer tank (5) is equipped with a connector that can form a temporary connection with the gas filling equipment (7).

5. The integrated photovoltaic hydrogen production and dynamically blended natural gas-hydrogen mixture supply station according to claim 3, characterized in that, The photovoltaic power generation device (11), the electrolytic hydrogen production device (12), the hydrogen storage tank (13), the natural gas storage and pressure regulation section (2), the dynamic proportioning blending device (3), and the compressor (4) are integrated into an intrinsically safe housing.

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