Solar multi-scenario conversion pipeline based on industrial topological network

Abstract

The application discloses a kind of solar multi-scene conversion pipelines based on industrial topological network, including hydrogen heat module, focusing heat module, photocatalytic suspension tank, primary saline water preheating storage tank, secondary saline water preheating storage tank, electric control valve and safety valve and other components.The application provides a topological pipeline design method for the efficient operation and maintenance of the full-spectrum solar energy conversion into hydrogen, heat, electricity and other multi-energy types and systems in an outdoor large-scale series-parallel system.Users can dynamically regulate and control the system terminal energy efficiency indicators by selectively stopping, matching different types of modules, replicating on a large scale, and changing the number of subsystems.The application has good integration, high intelligence, and simple operation.

Description

Technical Field

[0001] This invention belongs to the field of new energy preparation, specifically relating to a solar energy conversion pipeline based on an industrial topology network for multiple scenarios. Background Technology

[0002] Solar energy, as one of the cleanest primary energy sources, is inexhaustible. How to efficiently, scientifically, and systematically develop and utilize solar energy is a crucial aspect of restructuring my country's energy system and consumption structure. Currently, the main methods of large-scale solar energy utilization in China include solar heating and photovoltaic power generation, which are relatively limited in form and suffer from significant energy losses during the conversion process, resulting in a low overall utilization rate. Photocatalytic solar hydrogen production technology, proposed in the 1870s, has attracted considerable attention from scholars due to its ability to convert solar energy into hydrogen energy for storage and utilization in a low-cost, large-scale, mild, and efficient manner. After decades of development, small-scale demonstration projects have been largely achieved. However, regarding the current development of key photocatalytic materials within the system, most materials can only utilize approximately 50% or less of the energy in the solar spectrum, with almost all remaining energy wasted. This keeps the conversion efficiency from solar energy to hydrogen energy at a relatively low level, hindering its true industrial-scale promotion.

[0003] Segmenting the solar spectrum in an orderly manner and converting it into energy products in multiple forms such as heat, electricity, and hydrogen is undoubtedly a rational and effective way to utilize solar energy. Specifically, this involves using the complementary differences in the optical properties of various particulate fluids, photocatalyst suspensions, and photovoltaic panels, along with directional theoretical design, to achieve comprehensive utilization of the solar spectrum. This is achieved by integrating photocatalytic hydrogen production, photothermal conversion, and solar photovoltaic power generation. Extending to system engineering design, rigorous, scientific, and rational design of pipelines, instrumentation, and electrical systems is crucial for the operation and cost control of the entire system. From the perspective of solar energy conversion and production, a high-quality system structure design can fully utilize the capabilities of each production device; however, a poorly considered design can lead to periodic production failures, failure to meet key performance indicators, and increased risk of production safety accidents. In terms of solar energy conversion projects, the most commonly used system in China is the photovoltaic system structure design. Systems involving the coordinated conversion of hydrogen, heat, and electricity are almost non-existent, and the configuration and design of the core pipelines are even less known. Therefore, combining the functional and structural characteristics of each reaction unit, and designing and optimizing the connection and assembly between each unit module in an efficient, compact, safe, and reasonable manner is an inevitable process to help the project move towards a larger scale. Summary of the Invention

[0004] The purpose of this invention is to provide a solar energy conversion pipeline based on an industrial topology network. The design of this device can achieve coordination, safety and average construction cost of accurately converting outdoor solar energy into multiple energy forms such as hydrogen, heat and electricity, greatly improving the convenience and accuracy of large-scale system operation and maintenance.

[0005] To achieve the above objectives, the present invention employs the following solution:

[0006] A solar multi-scenario conversion pipeline based on an industrial topology network includes a photocatalytic hydrogen production section, a photothermal conversion section, and a photovoltaic power generation section. For a single subsystem, there are 10 modules, of which 9 hydrogen thermoelectric modules are constructed with linear Fresnel lenses at the beginning and have the functions of the above three parts. The remaining 1 focusing thermal module adopts a focusing point light source design at the beginning and has the function of photothermal conversion.

[0007] Each subsystem's photocatalytic hydrogen production pipeline is equipped with a photocatalytic suspension tank, with an inlet, temperature sensor, and hydrogen collection port located above it. A circulation pump is installed downstream of the photocatalytic suspension tank. The first nine modules of the subsystem each have a jacketed photothermal hydrogen production reaction tube, consisting of an inner and outer ring. The inner ring carries the heat fluid, while the outer ring carries the photocatalytic fluid. The downstream end of the circulation pump connects to the outer ring of the jacketed photothermal hydrogen production reaction tube, and the series of pipelines are connected in series to connect the outer rings of the jacketed photothermal hydrogen production reaction tubes of each module before transporting the fluid to the photocatalytic suspension tank. The photothermal conversion section consists of two cascaded flow paths, including a primary brine preheating tank. A peristaltic pump is installed downstream of the primary brine preheating tank, and subsequent pipelines pass sequentially through the hydrogen thermoelectric module. The back of the photovoltaic cells; the fluid flowing through all the photovoltaic cells has two sections, an outbound and a return, and the hydrogen thermoelectric modules are connected in a series-parallel combination; the return fluid enters the secondary brine preheating tank via a power pump, and a secondary brine preheating tank is equipped with a secondary brine temperature sensor at the top; a centrifugal pump is installed below the secondary brine preheating tank, and the downstream end of the centrifugal pump is connected to the inner layer of the sandwiched photothermal hydrogen production reaction tube; an electric control valve is installed between the 8th and 9th hydrogen thermoelectric modules, and the signal of the electric control valve is connected to the temperature probe on the right side of the 8th hydrogen thermoelectric module; the inner layer of the sandwiched photothermal hydrogen production reaction tube is subsequently connected to a booster pump, and the downstream end of the booster pump is connected to the focusing heat module, pressure gauges and temperature probes are installed on both sides of the focusing heat module, a safety valve is installed at the tail, and a hot water storage tank is installed at the downstream end of the focusing heat module.

[0008] A further improvement of this invention is that each individual hydrogen thermoelectric module and focusing heat module is equipped with an independent valve switch on both the left and right sides, allowing the user to selectively stop or shut down any module according to actual needs.

[0009] A further improvement of the present invention is that the electric control valve can automatically adjust according to the temperature value of the temperature sensor probe. When the temperature value is lower than the preset value, the hot fluid continues to flow back to the beginning of the parallel hydrogen thermoelectric module.

[0010] A further improvement of the present invention is that the secondary brine water preheating tank can be decomposed into several tanks.

[0011] A further improvement of the present invention is that the primary brine water preheating circuit adopts a parallel setting of process and return.

[0012] A further improvement of this invention is that both the photocatalytic suspension and the secondary saline-alkali water preheating circuit are set as single-pass circuits.

[0013] A further improvement of this invention is that the cooling water flow channel on the back of the photovoltaic cell is set in a serpentine, spiral, or interdigitated shape to increase the contact area between the cooling water and the photovoltaic cell, thereby ensuring the temperature control effect when the photovoltaic cell is working stably.

[0014] A further improvement of this invention is that the energy ratio of the photocatalytic hydrogen production section, the photothermal conversion section, and the photovoltaic power generation section can be quantitatively controlled by selectively shutting down and reorganizing modules and increasing or decreasing the number and connection form of subsystems according to the industrial topology network structure.

[0015] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0016] 1. This invention enables the simultaneous output of multiple energy forms, including hydrogen, heat, and electricity, under outdoor conditions, increasing the utilization efficiency of solar energy at the source. Furthermore, the various energy forms at the terminal can be flexibly allocated.

[0017] 2. This invention designs the connection method between modules based on topological network learning, so that the working status of each device is basically unaffected, reducing the difficulty of module operation and maintenance and improving work efficiency.

[0018] 3. The present invention is equipped with an active feedback control system, which enables predetermined parameters, such as fluid temperature values, to be output according to user settings.

[0019] 4. The present invention is equipped with a cascaded heat utilization program, which makes full use of the waste heat from the back of the photovoltaic system to achieve a preheating process for the saline water. Then, the water passes through the sandwiched photothermal hydrogen production reaction tube and the focusing heat module to achieve heat storage and desalination of the saline water, thus producing pure freshwater resources.

[0020] 5. In this invention, the storage tanks and other components can be reduced or increased in an orderly manner according to the actual pump power, which is conducive to the stable operation of the device system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal piping design of the subsystem.

[0022] Figure 2 This is a magnified view of a portion of the subsystem.

[0023] Figure 3 This is an enlarged view of the pipeline during a single salt-alkali water circulation process in the subsystem.

[0024] Figure 4 This is a diagram of the photocatalytic suspension circulation pipeline in a large-scale system. The upper right corner shows an enlarged view of a single subsystem.

[0025] Figure 5 This is an enlarged view of the pipeline for the secondary saline-alkali water circulation process in a large-scale system. The upper right corner shows an enlarged view of a single subsystem.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1 is a photocatalytic suspension tank; 2 is the feed inlet; 3 is a temperature sensor; 4 is a hydrogen collection port; 5 is a circulating pump; 6 is a jacketed photothermal hydrogen production reaction tube; 7 is a temperature probe; 8 is an electric control valve; 9 is a photovoltaic cell; 10 is a secondary brine preheating storage tank; 11 is a secondary brine thermometer; 12 is a primary brine preheating storage tank; 13 is a peristaltic pump; 14 is a centrifugal pump; 15 is a power pump; 16 is a booster pump; 17 is a pressure gauge; 18 is a focusing heat module; 19 is a safety valve; 20 is a hot water storage tank. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1As shown, this invention provides a solar multi-scenario conversion pipeline based on an industrial topology network. The core working unit consists of three parts: a photocatalytic hydrogen production section, a photothermal conversion section, and a photovoltaic power generation section. Taking a single subsystem as an example, it is generally set up to consist of 10 modules. Among them, nine hydrogen thermoelectric modules 21 are constructed with linear Fresnel lenses at their starting ends, and simultaneously possess the functions of the above three parts, enabling the output of hydrogen, heat, and electricity in three energy forms. The remaining one focusing thermal module 18 adopts a focusing point light source design at its starting end, and only has the function of photothermal conversion. For the photocatalytic hydrogen production pipeline design in the subsystem, a photocatalytic suspension tank 1 is set, with an inlet 2, a temperature sensor 3, and a hydrogen collection port 4 respectively set on its top. A circulation pump 5 is set at the downstream end of the photocatalytic suspension tank 1, which can transport the suspension to the downstream end. In the first nine modules of the subsystem, a jacketed photothermal hydrogen production reaction tube 6 is set. The jacketed photothermal hydrogen production reaction tube 6 consists of an inner ring and an outer ring. The inner ring carries the heat fluid, and the outer ring carries the photocatalytic fluid. The downstream end of the circulating pump 5 is connected to the outer ring of the jacketed photothermal hydrogen production reaction tube 6, and the series pipelines are connected in series to connect the outer rings of the jacketed photothermal hydrogen production reaction tubes 6 of each module, and then transported to the photocatalytic suspension tank 1. The photothermal conversion section consists of two cascade flow paths. First, a primary brine preheating tank 12 is set up, and a peristaltic pump 13 is set up at the downstream end of the primary brine preheating tank 12. The subsequent pipelines pass through the back of the photovoltaic cells 9 of each module in sequence. The fluid flowing through all photovoltaic cells 9 has two sections: an outbound section and a return section. The hydrogen thermoelectric modules 21 are connected in a series-parallel combination. The return fluid enters the secondary brine preheating tank 10 via the power pump 15. A secondary brine preheating tank 10 is equipped with a secondary brine temperature sensor 11 at the top. A centrifugal pump 14 is set up below the secondary brine preheating tank 10, and the downstream end of the centrifugal pump 14 is connected to the inner layer of the jacketed photothermal hydrogen production reaction tube 6. An electric control valve 8 is installed between the 8th and 9th hydrogen thermoelectric modules 21. The signal from the electric control valve 8 is connected to the temperature sensor 7 on the right side of the 8th hydrogen thermoelectric module 21. If the temperature does not reach the preset value when the hot fluid flows through the electric control valve 8, the fluid can be returned to the leftmost side of the hydrogen thermoelectric module 21. The inner layer of the jacketed photothermal hydrogen production reaction tube 6 is subsequently connected to a booster pump 16. The downstream end of the booster pump 16 is connected to a focusing heat module 18. Pressure gauges 17 and temperature sensors 7 are installed on both sides of the focusing heat module 18, and a safety valve 19 is installed at the tail end. A hot water storage tank 20 is installed downstream of the focusing heat module 18.

[0030] Preferably, each individual hydrogen thermoelectric module 21 and focusing heat module 18 has independent valve switches on both the left and right sides, allowing users to selectively stop or shut down any module according to actual needs without affecting the working status of other modules in the system, and enabling device maintenance at any time.

[0031] Preferably, the electric control valve 8 can automatically adjust based on the temperature value of the temperature sensor 7. When the temperature value is lower than the preset value, the hot fluid can continue to flow back to the beginning of the parallel hydrogen thermoelectric module 21.

[0032] Preferably, the number of storage devices in a distributed, large-scale system can be flexibly changed according to the pump power of the transport equipment. For example, the secondary brine preheating storage tank 10 can be divided into several storage tanks. The overall connection method can be consistent with that of the subsystem.

[0033] Preferably, in the large-scale system, only the primary brine preheating loop adopts a parallel design of process and return. The photocatalytic suspension and secondary brine preheating loops both adopt a single-pass loop design.

[0034] Preferably, the energy ratio of hydrogen, heat, and electricity in this system can be quantitatively controlled by selectively shutting down or reorganizing modules and adding or removing the number and connection forms of subsystems according to the industrial topology network structure.

[0035] Preferably, the cooling water flow channel on the back of the photovoltaic cell 9 can be designed with a pattern such as snake-shaped, spiral-shaped, or interdigitated to increase the contact area between the cooling water and the photovoltaic cell, and ensure the temperature control effect when the photovoltaic cell is working stably.

[0036] Preferably, in large-scale solar energy projects, if the pipeline connection method of the subsystem cannot meet the requirements due to insufficient loop pressure or flow control, the number of pumps and flow meter control can be adaptively increased.

[0037] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A solar energy conversion pipeline based on an industrial topology network for multiple scenarios, characterized in that, It includes a photocatalytic hydrogen production section, a photothermal conversion section, and a photovoltaic power generation section; for a single subsystem, there are 10 modules, of which 9 hydrogen thermoelectric modules (21) are constructed with linear Fresnel lenses at the beginning and have the functions of the above three parts at the same time, and the remaining 1 focusing thermal module (18) adopts a focusing point light source design at the beginning and has the function of photothermal conversion; Each subsystem's photocatalytic hydrogen production pipeline is equipped with a photocatalytic suspension tank (1), above which are respectively a feed inlet (2), a temperature sensor (3), and a hydrogen collection port (4); a circulation pump (5) is installed at the downstream end of the photocatalytic suspension tank (1). In the first 9 modules of the subsystem, a jacketed photothermal hydrogen production reaction tube (6) is installed. The jacketed photothermal hydrogen production reaction tube (6) consists of an inner ring and an outer ring. The inner ring carries the heat fluid, and the outer ring carries the photocatalytic fluid; the downstream end of the circulation pump (5) is connected to the jacketed photothermal... The outer ring of the hydrogen production reaction tube (6) is connected by a series of pipelines in series to connect the outer ring of the jacketed photothermal hydrogen production reaction tube (6) of each module, and then transported to the photocatalytic suspension tank (1); in the photothermal conversion section, it consists of two cascade flow paths, and a primary brine preheating tank (12) is provided. A peristaltic pump (13) is provided at the downstream end of the primary brine preheating tank (12), and the subsequent pipeline passes through the back of the photovoltaic cell (9) of the hydrogen thermoelectric module (21) in sequence; the flow through all photovoltaic cells (9) The body has two sections, an outbound and a return section, and the hydrogen thermoelectric modules (21) are connected in a series-parallel combination. The return fluid enters the secondary brine preheating tank (10) via a power pump (15). A secondary brine preheating tank (10) is equipped with a secondary brine temperature sensor (11) on top. A centrifugal pump (14) is installed below the secondary brine preheating tank (10), and the downstream end of the centrifugal pump (14) is connected to the inner layer of the jacketed photothermal hydrogen production reaction tube (6). Between the 8th and 9th hydrogen thermoelectric modules (21) An electric control valve (8) is provided, and the signal of the electric control valve (8) is connected to the temperature probe (7) on the right side of the 8th hydrogen thermoelectric module (21); the inner layer of the sandwiched photothermal hydrogen production reaction tube (6) is subsequently connected to the booster pump (16), and the downstream end of the booster pump (16) is connected to the focusing heat module (18). Pressure gauges (17) and temperature probes (7) are provided on both sides of the focusing heat module (18), and a safety valve (19) is provided at the tail end. A hot water storage tank (20) is provided at the downstream end of the focusing heat module (18). Each hydrogen thermoelectric module (21) has an independent valve switch on both the left and right sides, allowing users to selectively stop or shut down any module according to their actual needs. The heat-focusing module (18) is equipped with independent valve switches on both the left and right sides, allowing users to selectively stop or shut down any module according to their actual needs. The electric control valve (8) can automatically adjust according to the temperature value of the temperature sensor (7). When the temperature value is lower than the preset value, the hot fluid will continue to flow back to the beginning of the parallel hydrogen thermoelectric module (21). The energy ratio of the photocatalytic hydrogen production section, the photothermal conversion section, and the photovoltaic power generation section can be quantitatively controlled by selectively shutting down or reorganizing modules and increasing or decreasing the number and connection form of subsystems according to the industrial topology network structure.

2. The solar energy multi-scenario conversion pipeline based on an industrial topology network according to claim 1, characterized in that, The secondary saline-alkali water preheating tank (10) can be decomposed into several tanks.

3. A solar energy multi-scenario conversion pipeline based on an industrial topology network according to claim 1, characterized in that, The primary saline-alkali water preheating circuit adopts a parallel process and return configuration.

4. A solar energy multi-scenario conversion pipeline based on an industrial topology network according to claim 1, characterized in that, Both the photocatalytic suspension and the secondary saline-alkali water preheating circuit are set up as single-pass circuits.

5. A solar energy multi-scenario conversion pipeline based on an industrial topology network according to claim 1, characterized in that, The cooling water flow channel on the back of the photovoltaic cell (9) is set in a serpentine, spiral or interdigital shape to increase the contact area between the cooling water and the photovoltaic, and to ensure the temperature control effect when the photovoltaic is working stably.

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