Steam circulation energy storage control system

Abstract

The invention relates to the technical field of energy storage and heat supply, and discloses a steam circulation energy storage control system which comprises a solar water heater, an underground energy storage device, a water storage pipe, a water lifting pipe, a water return pipe and a driving device. One end of the driving device is communicated with the water lifting pipe, and the other end of the driving device is communicated with a water inlet pipe opening of the solar water heater; the water storage pipe is arranged around the bottom of the underground energy storage device; the driving device is used for driving water in the water lifting pipe into the solar water heater and driving water in the solar water heater into the water storage pipe through the water return pipe; the solar water heater is used for heating water in the solar water heater through solar energy; the underground energy storage device is used for exchanging heat with the water storage pipe and storing the heat. Various technologies such as solar heat utilization, steam power circulation and underground energy storage are combined to solve the problems that the energy storage efficiency is low, and the energy consumption of an energy storage circulation power system is large.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage heating, and in particular to a steam cycle energy storage control system. Background Art

[0002] With the increasing global demand for clean energy, solar energy as a renewable energy source has garnered widespread attention. Solar water heaters have become a common solar energy-utilizing device, but traditional solar energy systems suffer from difficulties in energy storage and are significantly affected by weather. Therefore, efficient collection, storage, and utilization of solar energy have become a hot topic of research.

[0003] With economic development and the increasing scarcity of land resources, underground projects are proliferating. To efficiently utilize underground space, energy-saving and low-carbon projects are emerging in large numbers. Ground-source heat pumps, water-source heat pumps, and air-source heat pumps have also gained popularity. Notably, the integration of underground caisson construction technology (patented by two patents: 2017102556966 and 202010330696X) allows heat exchange pipes to be cleverly laid at the bottom of the caisson during construction. This innovative approach lays a solid foundation for underground projects to function as heat sources and significantly promotes the development of related heat pump projects. Utilizing underground space for energy storage not only effectively reduces the energy demand of surface buildings but also significantly reduces carbon emissions. For example, a ground-source heat pump system stores solar energy in the soil during summer, reducing the heat load on buildings while increasing the ground's temperature. This stored solar energy underground provides heat for winter heating. In winter, the ground-source heat pump system extracts this stored heat to meet the building's heating needs, creating a heat cycle. Therefore, combining solar energy with underground engineering can achieve cross-time utilization of energy and improve energy utilization efficiency.

[0004] In order to reduce dependence on traditional energy, achieve energy conservation and emission reduction goals, and improve energy utilization efficiency, it is necessary to integrate multiple green energy technologies into one system.

[0005] In view of this, the present application proposes a steam cycle energy storage control system that combines multiple technologies such as solar thermal utilization, steam power cycle and underground energy storage to solve the problems of low energy storage efficiency and high energy consumption of energy storage cycle power system. Summary of the Invention

[0006] In view of this, the present invention proposes a steam cycle energy storage control system, which aims to combine multiple technologies such as solar thermal utilization, steam power cycle and underground energy storage to solve the problems of low energy storage efficiency and high energy consumption of energy storage cycle power system.

[0007] The present invention proposes a steam cycle energy storage control system, comprising:

[0008] Solar water heater, underground energy storage device, water storage pipe, water lifting pipe, water return pipe and driving device;

[0009] The water outlet of the solar water heater is connected to a return pipe, a water storage pipe, and a water lifting pipe in sequence; one end of the driving device is connected to the water lifting pipe, and the other end is connected to the water inlet of the solar water heater;

[0010] The water storage pipe is arranged around the bottom of the underground energy storage device;

[0011] The driving device is used to drive the water in the water supply pipe into the solar water heater and to drive the water in the solar water heater into the water storage pipe through the return pipe;

[0012] The solar water heater is used to heat the water inside by using solar energy;

[0013] The underground energy storage device is used to perform heat exchange with the water storage pipe and store the heat energy after the heat exchange.

[0014] Furthermore, the driving device includes a solar steam generator, a solar reflective heater, a pressure-reducing water pump and a cold water nozzle;

[0015] The solar steam generator is connected in series to the water inlet pipe of the solar water heater, the cold water nozzle is arranged on the top of the solar steam generator, one end of the pressure-reducing water pump is connected to the water supply pipe through a pipe, and the other end is connected to the cold water nozzle through a pipe;

[0016] The solar steam generator is used to generate steam, the solar reflective heater is used to provide a heat source for the solar steam generator, and the pressure-reducing water pump is used to spray cold water into the solar steam generator through a cold water nozzle to reduce the pressure of the solar steam generator.

[0017] Furthermore, it also includes: a data acquisition device and an analysis and control device;

[0018] The data acquisition device includes a plurality of sensors, which are respectively arranged on the solar steam generator, the solar reflective heater, the solar heater and the return pipe;

[0019] The analysis and control device is electrically connected to the data acquisition device and the driving device respectively;

[0020] The data acquisition device is used to collect water flow and water temperature data of the solar water heater, water level and water pressure data of the solar steam generator, and data information of solar radiation intensity in real time, and send the data information to the analysis and control device;

[0021] The analysis and control device is used to receive the data information collected by the data collection device and control the operating state of the driving device according to the data information.

[0022] Furthermore, the driving device further includes an electric heater, which is arranged inside the solar steam generator and is used to assist in heating the solar steam generator.

[0023] Furthermore, the analysis and control device is used to preset the water temperature thresholds of the solar water heater: a first preset water temperature threshold T1, a second preset water temperature threshold T2, and a third preset water temperature threshold T3, 100>T3>T2>T1>50; and is also used to preset the water pressure thresholds in the solar steam generator: a first preset water pressure threshold K1, a second preset water pressure threshold K2, and a third preset water pressure threshold K3, 0.5MPa>K3>K2>K1>0.4MPa;

[0024] The analysis and control device controls the operating state of the driving device according to the data information, including: the analysis and control device controls the operation of the electric heater and the pressure-reducing water pump according to the water temperature data T of the solar water heater, the water pressure data K in the solar steam generator, and the preset water temperature threshold and water pressure threshold;

[0025] Wherein, if T≤T1, and K≥K3, the analysis and control device controls the pressure-reducing water pump to start and reduce the pressure of the solar steam generator; when K≤K2, the analysis and control device controls the pressure-reducing water pump to stop reducing the pressure;

[0026] If T≥T3 and K≤K1, the analysis and control device controls the electric heater to start and perform auxiliary heating on the solar steam generator. When K≥K3, the analysis and control device controls the electric heater to stop heating.

[0027] Furthermore, the analysis and control device is further used to preset water level thresholds in the solar steam generator: a first water level threshold P1, a second water level threshold P2, P2>P1;

[0028] The analyzing and controlling device controls the operating state of the driving device according to the data information, and further comprises: the analyzing and controlling device controls the operation of the pressure reducing water pump according to the water level data P in the solar steam generator and a preset water level threshold;

[0029] Among them, when P≤P1, the analysis and control device controls the pressure reduction pump to start and reduce the pressure of the solar steam generator;

[0030] When P≥P2, the analysis and control device controls the pressure-reducing water pump to stop reducing the pressure.

[0031] Furthermore, the analysis and control device is further used to preset solar radiation intensity thresholds: a first light intensity Q1, a second light intensity Q2, Q2>Q1;

[0032] The analyzing and controlling device controls the operating state of the driving device according to the data information, and further includes: the analyzing and controlling device controls the operation of the electric heater and the solar reflective heater according to the solar radiation intensity data Q, the water pressure data K in the solar steam generator, and the preset solar radiation intensity threshold and water pressure threshold;

[0033] If Q≤Q1, the analysis and control device controls the electric heater to start and perform auxiliary heating on the solar steam generator;

[0034] If K≥K3 or Q≥Q2, the analysis and control device controls the electric heater to stop heating.

[0035] Furthermore, the data acquisition device includes a water level sensor, a water pressure sensor, a temperature sensor, a flow sensor and a light sensor.

[0036] Furthermore, it also includes a power supply device, which is electrically connected to the driving device, the data acquisition device and the analysis and control device respectively; the power supply device includes a battery and a solar power generation panel, the solar power generation panel is connected to the battery through a line, the solar power generation panel is used to charge the battery, and the battery is used to power the system.

[0037] Furthermore, the analysis and control device is also used to calculate the total water flow rate within a preset period based on the water flow rate of the solar water heater.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] The steam cycle energy storage control system of this invention integrates solar water heaters, underground energy storage devices, and a water circulation system to form a closed-loop thermal energy circulation system. While traditional solar systems only provide immediate heat, this system utilizes energy storage devices to utilize energy over time and stores excess heat underground, avoiding the efficiency loss associated with excess heat in traditional systems.

[0040] This application reduces energy storage costs by providing an underground energy storage device; this application provides a drive device that utilizes steam power rather than a traditional electric water pump, which can achieve energy self-sufficiency and reduce the energy consumption of the energy storage cycle power system. In addition, the steam drive of this application has no moving parts that wear out, which extends the service life of the drive device; this application ensures that the underground energy storage device can operate 24 hours a day through the coordinated operation of the underground energy storage device and the solar water heater, which is not affected by external temperature fluctuations and improves energy storage efficiency. The modular design of this application can adapt to a variety of scenarios and can provide independent energy systems for remote areas, reducing dependence on the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0042] Figure 1 A functional structural diagram of a steam cycle energy storage control system provided by an embodiment of the present invention;

[0043] Figure 2 A schematic diagram of the internal structure of a driving device of a steam cycle energy storage control system provided by an embodiment of the present invention;

[0044] Figure 3 A schematic diagram of the use status of a steam cycle energy storage control system provided by an embodiment of the present invention.

[0045] In the figure: 1-solar water heater; 2-underground energy storage device; 3-water storage pipe; 4-water lifting pipe; 41-first one-way water inlet valve; 42-first one-way water outlet valve; 5-return pipe; 51-second one-way water outlet valve; 6-driving device; 61-solar steam generator; 62-solar reflective heater; 63-pressure reducing pump; 64-cold water nozzle; 65-electric heater; 7-analysis and control device; 8-water level sensor; 81-water pressure sensor; 82-temperature sensor; 83-flow sensor; 84-light sensor; 9-battery; 91-solar power generation panel; 10-ground building; 101-central air-conditioning system; 102-central air-conditioning water tank. DETAILED DESCRIPTION

[0046] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0047] With the increasing global demand for clean energy, solar energy as a renewable energy source has garnered widespread attention. Solar water heaters have become a common solar energy-utilizing device, but traditional solar energy systems suffer from difficulties in energy storage and are significantly affected by weather. Therefore, efficient collection, storage, and utilization of solar energy have become a hot topic of research.

[0048] With economic development and the increasing scarcity of land resources, underground projects are proliferating. To efficiently utilize underground space, energy-saving, low-carbon projects are emerging. Ground-source heat pumps, water-source heat pumps, and air-source heat pumps are also gaining popularity. Underground projects, as a heat source, will significantly boost the development of these projects. Utilizing underground space for energy storage not only effectively reduces the energy demand of surface buildings but also significantly reduces carbon emissions. For example, a ground-source heat pump system stores solar energy in the soil during the summer, reducing the heat load on buildings while simultaneously increasing the ground's temperature. This stored solar energy underground provides heat for winter heating. In winter, the system extracts this stored heat to meet building heating needs, creating a heat cycle. Therefore, combining solar energy with underground projects can achieve multi-time energy utilization and improve energy efficiency.

[0049] In order to reduce dependence on traditional energy, achieve energy conservation and emission reduction goals, and improve energy utilization efficiency, it is necessary to integrate multiple green energy technologies into one system.

[0050] Therefore, the present invention proposes a steam cycle energy storage control system to solve the problems of low energy storage efficiency and high energy consumption of the energy storage cycle power system.

[0051] Reference Figure 1-3 As shown, in some embodiments of the present application, a steam cycle energy storage control system includes a solar water heater 1, an underground energy storage device 2, a water storage pipe 3, a water lifting pipe 4, a water return pipe 5 and a driving device 6.

[0052] Specifically, the water outlet of the solar water heater 1 is connected to the return pipe 5, the water storage pipe 3, and the water lifting pipe 4 in sequence; one end of the driving device 6 is connected to the water lifting pipe 4, and the other end is connected to the water inlet of the solar water heater 1; the water storage pipe 3 is arranged around the bottom of the underground energy storage device 2.

[0053] It is understood that the solar water heater 1 is connected to the water storage pipe 3 via the water supply pipe 4 and the water return pipe 5 to form a water circulation loop. The driving device 6 is responsible for driving the water to flow in the water supply pipe 4 and the water return pipe 5.

[0054] Specifically, the driving device 6 is used to drive the water in the water-lifting pipe 4 into the solar water heater 1 and to drive the water in the solar water heater 1 into the water storage pipe 3 through the return pipe 5; the solar water heater 1 is used to heat the water inside by solar energy; the underground energy storage device 2 is used to exchange heat with the water storage pipe 3 and store the heat energy after the heat exchange.

[0055] Specifically, the medium in the water circulation loop is distilled water or inorganic salt solution, which is driven by steam to prevent scale from affecting the heat exchange efficiency.

[0056] Specifically, a first one-way water inlet valve 41 and a first one-way water outlet valve 42 are provided on the water lifting pipe 4 , and a second one-way water outlet valve 51 is provided on the water return pipe 5 .

[0057] Specifically, during caisson construction, the water storage pipe 3 can be installed at the bottom of the underground energy storage device 2. A solar water heater 1 and a drive device 6 are installed on the ground. The drive device 6 is connected in series between the water lifting pipe 4 and the solar water heater 1. The steam generated by the drive device 6 drives the hot water in the water heater to flow into the water storage pipe 3. Heat is exchanged between the water storage pipe 3 and the underground energy storage device 2, and the heat energy is stored in the underground energy storage device 2.

[0058] It can be understood that the above arrangement can realize the collection of solar energy, heating of water, and storage and recycling of thermal energy.

[0059] It can be understood that the water circulation loop of the present application can be applied to a ground source heat pump system, through which the heat energy in the underground energy storage device 2 is exchanged with the water in the central air-conditioning water tank 102, thereby supplying energy to the central air-conditioning system 101 on the ground building 10. The ground source heat pump system can be connected in series with the water circulation loop, or it can be connected in parallel with the water circulation loop and a separate water circulation pipeline can be opened.

[0060] As can be seen, this application utilizes solar energy, reducing dependence on traditional energy sources and lowering operating costs, offering energy-saving and environmentally friendly advantages. The drive device 6 circulates water through the system, ensuring that heat energy is continuously transferred from the solar water heater 1 to the water storage pipe 3 and ultimately stored in the underground energy storage device 2. This improves energy utilization efficiency and provides a stable heat source reserve for subsequent energy utilization.

[0061] Reference Figure 1-2 As shown, in some embodiments of the present application, the driving device 6 includes a solar steam generator 61 , a solar reflective heater 62 , a pressure reducing water pump 63 and a cold water nozzle 64 .

[0062] Specifically, the solar steam generator 61 is connected in series to the water inlet pipe of the solar water heater 1, the cold water nozzle 64 is set at the top of the solar steam generator 61, one end of the pressure reducing water pump 63 is connected to the water lifting pipe 4 through a pipe, and the other end is connected to the cold water nozzle 64 through a pipe.

[0063] Specifically, the solar steam generator 61 is used to generate steam, the solar reflective heater 62 is used to provide a heat source for the solar steam generator 61, and the pressure reducing water pump 63 is used to spray cold water into the solar steam generator 61 through the cold water nozzle 64 to reduce the pressure of the solar steam generator 61.

[0064] Specifically, the solar steam generator 61 and the solar reflective heater 62 are both rotatably mounted, and the solar reflective heater 62 can track sunlight in real time to provide focused heating. When steam is generated in the solar steam generator 61, the steam pushes the water in the solar water heater 1 through the return pipe 5 and into the water storage pipe 3.

[0065] Specifically, the pressure reducing water pump 63 sprays cold water into the solar steam generator 61 through the cold water nozzle 64. The steam is cooled and liquefied to form a negative pressure, driving the cold water in the water lifting pipe 4 to flow back to the solar steam generator 61, thereby completing the cycle.

[0066] As you can understand, the solar reflective heater 62 provides heat for the solar steam generator 61. The steam expands, driving the water flow. The cold water nozzle 64 reduces the pressure, creating a negative pressure that drives the return flow. The reflector tracks sunlight to improve heating efficiency, and the cold water nozzle 64 cooperates with the water pump to achieve a self-circulating "steam drive + negative pressure return" cycle.

[0067] It can be seen that the solar reflective heater 62 of the present application can dynamically track sunlight, improve steam generation efficiency, and reduce dependence on traditional energy sources. The volume change of steam-condensed water is used to drive water flow, reducing the energy consumption of mechanical pumps and making the system more energy-efficient. The setting of the step-down water pump 63 and the cold water nozzle 64 can effectively control the pressure in the solar steam generator 61, preventing excessive pressure from damaging the system, and ensuring the safety and reliability of the system. At the same time, the generation of steam provides power for the circulation of water, making the operation of the drive device 6 more efficient, reducing the energy required for traditional mechanical drive, and improving the performance of the entire system.

[0068] Reference Figure 1 As shown, in some embodiments of the present application, it also includes: a data acquisition device and an analysis and control device 7.

[0069] Specifically, the data acquisition device includes a plurality of sensors, which are respectively arranged on the solar steam generator 61 , the solar reflective heater 62 , the solar heater 1 and the return pipe 5 .

[0070] Specifically, the analysis and control device 7 is electrically connected to the data acquisition device and the driving device 6 respectively.

[0071] Specifically, the data acquisition device is used to collect water flow and water temperature data of the solar water heater 1, water level and water pressure data of the solar steam generator 61 and solar radiation intensity data information in real time, and send the data information to the analysis and control device 7.

[0072] Specifically, the analysis and control device 7 is used to receive the data information collected by the data collection device and control the operating state of the driving device 6 according to the data information.

[0073] As can be seen, the data acquisition device acquires the operating parameters of each part of the system in real time, providing an accurate basis for decision-making by the analysis and control device 7. The analysis and control device 7 controls the drive device 6 based on this data, enabling the system to automatically adjust according to actual operating conditions. It responds promptly to changes in solar radiation intensity or fluctuations in parameters such as water temperature, water pressure, and water level, ensuring that the system is always in optimal operating condition. This improves the system's efficiency and stability, implements intelligent control, reduces manual intervention, and enhances the system's automation level.

[0074] Reference Figure 1-2 As shown, in some embodiments of the present application, the driving device 6 further includes an electric heater 65 , which is disposed inside the solar steam generator 61 . The electric heater 65 is used to assist in heating the solar steam generator 61 .

[0075] It is understandable that when the solar energy supply is insufficient, such as on cloudy days or when the light intensity is weak, the heat provided by the solar reflective heater 62 may not be able to meet the needs of the solar steam generator 61 to produce sufficient steam. At this time, the electric heater 65 is started to heat the solar steam generator 61 to supplement the thermal energy, ensure that the drive device 6 can work normally, and maintain the circulation of water.

[0076] As can be seen, the provision of electric heater 65 compensates for the unstable solar energy supply, enabling the system to operate normally even in poor lighting conditions, thereby improving its adaptability and reliability. By working in conjunction with solar reflective heater 62, the solar steam generator 61 is guaranteed to have sufficient heat to generate steam under varying lighting conditions, ensuring the power supply to drive device 6 and thus ensuring the stable operation of the entire steam cycle energy storage control system. This expands the system's scope of application and enables it to function in a wider range of environmental conditions.

[0077] Reference Figure 1 As shown, in some embodiments of the present application, the analysis and control device 7 is used to preset the water temperature thresholds of the solar water heater 1: a first preset water temperature threshold T1, a second preset water temperature threshold T2 and a third preset water temperature threshold T3, 100>T3>T2>T1>50; and is also used to preset the water pressure thresholds in the solar steam generator 61: a first preset water pressure threshold K1, a second preset water pressure threshold K2, a third preset water pressure threshold K3, 0.5MPa>K3>K2>K1>0.4MPa.

[0078] Specifically, the analysis and control device 7 controls the operating status of the driving device 6 according to the data information, including: the analysis and control device 7 controls the operation of the electric heater 65 and the pressure-reducing water pump 63 according to the water temperature data T of the solar water heater 1, the water pressure data K in the solar steam generator 61, and the preset water temperature threshold and water pressure threshold.

[0079] Specifically, if T≤T1, and K≥K3, the analysis and control device 7 controls the pressure-reducing water pump 63 to start and reduce the pressure of the solar steam generator 61. When K≤K2, the analysis and control device 7 controls the pressure-reducing water pump 63 to stop reducing the pressure.

[0080] If T≥T3 and K≤K1, the analyzing and controlling device 7 controls the electric heater 65 to start and perform auxiliary heating on the solar steam generator 61. When K≥K3, the analyzing and controlling device 7 controls the electric heater 65 to stop heating.

[0081] It can be understood that when T≤T1 and K≥K3, it means that the water temperature is too low and the water pressure is too high. At this time, the water temperature is too low to meet the energy storage water temperature, and steam-driven water circulation is not required. Therefore, it is necessary to control the pressure-reducing water pump 63 to start pressure reduction. When K≤K2, the pressure reduction is stopped to prevent the water in the water pipe 4 from entering the solar steam generator 61 due to low pressure; when T≥T3 and K≤K1, the water temperature is too high and the water pressure is too low. At this time, the water temperature meets the energy storage water temperature, and steam-driven water circulation is required. Therefore, the electric heater 65 is controlled to start auxiliary heating to enable the solar steam generator 61 to generate enough steam to drive water circulation. When K≥K3, the electric heater 65 stops heating to avoid excessive water pressure.

[0082] It can be seen that the control strategy based on the preset range of this application can accurately adjust the system according to the actual conditions of water temperature and water pressure. When the water temperature is too low or the water pressure is too high, the pressure is reduced in time to avoid damage to system components caused by excessive pressure and ensure system safety; when the water temperature is too high or the water pressure is too low, the electric heater 65 is used to add heat to increase the water pressure and ensure that the drive device 6 has sufficient power to drive the water circulation. Through this precise control, the system can remain stable under different operating conditions, improve energy utilization efficiency, ensure that the energy conversion and transmission between the solar water heater 1 and the solar steam generator 61 are more reasonable and efficient, and improve the performance and stability of the entire system.

[0083] Reference Figure 1 As shown, in some embodiments of the present application, the analysis and control device 7 is further used to preset water level thresholds in the solar steam generator 61: a first water level threshold P1, a second water level threshold P2, P2>P1.

[0084] Specifically, the analysis and control device 7 controls the operating state of the driving device 6 according to the data information, and further includes: the analysis and control device 7 controls the operation of the pressure reducing pump 63 according to the water level data P in the solar steam generator 61 and a preset water level threshold.

[0085] Specifically, when P≤P1, the analyzing and controlling device 7 controls the pressure reducing pump 63 to start and reduce the pressure of the solar steam generator 61; when P≥P2, the analyzing and controlling device 7 controls the pressure reducing pump 63 to stop reducing the pressure.

[0086] It can be understood that when the water level data P≤P1 in the solar steam generator 61, it means that the water level is too low. The water volume at this time does not meet the water volume of a water cycle, which will also affect the steam generation and the normal operation of the system. At this time, the analysis and control device 7 controls the pressure-reducing water pump 63 to start and reduce the pressure so that the water in the water lifting pipe 4 can enter the solar steam generator 61; when P≥P2, it means that the water level has returned to the appropriate range, and the pressure-reducing water pump 63 is controlled to stop reducing the pressure.

[0087] As can be seen, monitoring and controlling the water level ensures sufficient water in solar steam generator 61 to generate steam and maintain normal system operation. When the water level is too low, timely pressure reduction via pressure-reducing pump 63 is used to adjust the water circulation within the system, allowing more water to enter solar steam generator 61 and preventing equipment damage or operational abnormalities due to water shortages. This control strategy further enhances the system's self-regulating capabilities, ensuring that the system can automatically adjust to water level fluctuations, maintaining a stable operating state, and improving system reliability and safety.

[0088] Reference Figure 1 As shown, in some embodiments of the present application, the analysis and control device 7 is further configured to preset solar radiation intensity thresholds: a first illumination intensity Q1, a second illumination intensity Q2, and Q2>Q1.

[0089] Specifically, the analysis and control device 7 controls the operating state of the driving device 6 according to the data information, and also includes: the analysis and control device 7 controls the operation of the electric heater 65 and the solar reflective heater 62 according to the solar radiation intensity data Q, the water pressure data K in the solar steam generator 61, and the preset solar radiation intensity threshold and water pressure threshold.

[0090] Specifically, if Q≤Q1, the analyzing and controlling device 7 controls the electric heater 65 to start and perform auxiliary heating on the solar steam generator 61; if K≥K3 or Q≥Q2, the analyzing and controlling device 7 controls the electric heater 65 to stop heating.

[0091] It can be understood that when the solar radiation intensity data Q≤Q1, it means that the light is insufficient and the heat provided by the solar reflective heater 62 is insufficient. At this time, it is necessary to control the electric heater 65 to start auxiliary heating; when the water pressure K≥K3 or Q≥Q2, it means that the water pressure is sufficient or the light intensity is restored. At this time, the electric heater 65 can be controlled to stop heating.

[0092] It is understandable that the analyzing and controlling device 7 is also used to control the solar reflective heater 62 to rotate following the sunlight based on the data information of the solar radiation intensity.

[0093] As can be seen, combining solar radiation intensity and water pressure to control the operation of electric heater 65 enables the system to utilize energy more efficiently. When light intensity is insufficient, electric heater 65 is activated promptly to ensure the heating effect of solar steam generator 61 and maintain normal system operation. When light intensity is sufficient or water pressure reaches the required level, electric heater 65 is deactivated to avoid energy waste. This control strategy optimizes the utilization of solar energy and electrical energy, improves the system's energy efficiency under different lighting conditions, ensures efficient and stable operation in various environments, and reduces energy consumption, offering energy-saving and environmentally friendly advantages.

[0094] Reference Figure 1 As shown, in some embodiments of the present application, the data acquisition device includes a water level sensor 8, a water pressure sensor 81, a temperature sensor 82, a flow sensor 83 and a light sensor 84.

[0095] Specifically, the water level sensor 8 and the water pressure sensor 81 are arranged on the solar steam generator 61 , the temperature sensor 82 is arranged on the solar water heater 1 , the flow sensor 83 is arranged on the return pipe 5 , and the light sensor 84 is arranged on the solar reflective heater 62 .

[0096] As can be seen, the multiple sensors ensure accurate and comprehensive data collection, providing a solid foundation for the system's intelligent control. Accurate data on flow, temperature, water level, water pressure, and solar radiation intensity enables the analysis and control device 7 to understand the operating status of each system component in real time, enabling it to make accurate control decisions and ensure reliable system operation.

[0097] Reference Figure 1 As shown, in some embodiments of the present application, a power supply device is also included.

[0098] Specifically, the power supply device is electrically connected to the driving device 6 , the data acquisition device and the analysis and control device 7 respectively.

[0099] Specifically, the power supply device includes a battery 9 and a solar panel 91. The solar panel 91 is connected to the battery 9 through a line. The solar panel 91 is used to charge the battery 9, and the battery 9 is used to power the system.

[0100] It can be understood that the solar panel 91 uses solar energy to generate electricity to charge the battery 9, and the battery 9 supplies power to the entire system, providing the electricity required for operation and ensuring the normal operation of various components such as the data acquisition device, analysis and control device 7, and drive device 6.

[0101] Reference Figure 1 As shown, in some embodiments of the present application, the analysis and control device 7 is further used to calculate the total water flow rate within a preset period based on the water flow rate of the solar water heater 1.

[0102] It can be understood that by accumulating the water flow within a certain period of time, the total water flow data can be obtained, providing data support for the operation evaluation and optimization of the system.

[0103] As can be seen, calculating the total water flow rate within a preset cycle can provide insights into the amount of water circulated over a period of time, thereby assessing the system's operating efficiency and energy conversion. For example, by analyzing the relationship between the total water flow rate and stored thermal energy, the system's energy storage effectiveness can be determined, providing a basis for further optimizing the system's operating parameters and improving energy efficiency. This functionality enables not only real-time control but also long-term operational analysis and optimization, enhancing the system's intelligence and data-driven capabilities and providing strong support for its continuous improvement and optimization.

[0104] The steam cycle energy storage control system in the above embodiment integrates a solar water heater 1, an underground energy storage device 2, and a water circulation system to form a closed-loop thermal energy circulation system. While traditional solar systems only provide immediate heat, this system utilizes energy storage devices to utilize energy across time periods and stores excess heat underground, avoiding the efficiency loss associated with excess heat in traditional systems.

[0105] Compared with the existing technology, the present application reduces the energy storage cost by providing an underground energy storage device 2; the present application provides a drive device 6 that utilizes steam power instead of a traditional electric water pump, which can achieve energy self-sufficiency and reduce the energy consumption of the energy storage cycle power system. In addition, the steam drive of the present application has no moving parts to wear out, which extends the service life of the drive device 6; the present application ensures that the underground energy storage device 2 can operate 24 hours a day through the coordinated work of the underground energy storage device 2 and the solar water heater 1, which is not affected by external temperature fluctuations and improves energy storage efficiency. The modular design of the present application can adapt to a variety of scenarios and can provide independent energy systems for remote areas, reducing dependence on the power grid.

[0106] It should be noted that:

[0107] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0108] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A steam cycle energy storage control system, characterized in that: include: Solar water heater, underground energy storage device, water storage pipe, water lifting pipe, water return pipe and driving device; The water outlet of the solar water heater is connected to a return pipe, a water storage pipe, and a water lifting pipe in sequence; one end of the driving device is connected to the water lifting pipe, and the other end is connected to the water inlet of the solar water heater; The water storage pipe is arranged around the bottom of the underground energy storage device; The driving device is used to drive the water in the water supply pipe into the solar water heater and to drive the water in the solar water heater into the water storage pipe through the return pipe; The solar water heater is used to heat the water inside by using solar energy; The underground energy storage device is used to perform heat exchange with the water storage pipe and store the heat energy after the heat exchange.

2. A steam cycle energy storage control system according to claim 1, characterized in that: The driving device includes a solar steam generator, a solar reflective heater, a pressure-reducing water pump and a cold water nozzle; The solar steam generator is connected in series to the water inlet pipe of the solar water heater, the cold water nozzle is arranged on the top of the solar steam generator, one end of the pressure-reducing water pump is connected to the water supply pipe through a pipe, and the other end is connected to the cold water nozzle through a pipe; The solar steam generator is used to generate steam, the solar reflective heater is used to provide a heat source for the solar steam generator, and the pressure-reducing water pump is used to spray cold water into the solar steam generator through a cold water nozzle to reduce the pressure of the solar steam generator.

3. A steam cycle energy storage control system according to claim 2, characterized in that: Also includes: Data acquisition device and analysis and control device; The data acquisition device includes a plurality of sensors, which are respectively arranged on the solar steam generator, the solar reflective heater, the solar heater and the return pipe; The analysis and control device is electrically connected to the data acquisition device and the driving device respectively; The data acquisition device is used to collect water flow and water temperature data of the solar water heater, water level and water pressure data of the solar steam generator, and data information of solar radiation intensity in real time, and send the data information to the analysis and control device; The analysis and control device is used to receive the data information collected by the data collection device and control the operating state of the driving device according to the data information.

4. A steam cycle energy storage control system according to claim 3, characterized in that: The driving device further comprises an electric heater, which is arranged inside the solar steam generator and is used for auxiliary heating of the solar steam generator.

5. A steam cycle energy storage control system according to claim 4, characterized in that: The analysis and control device is used to preset water temperature thresholds of the solar water heater: a first preset water temperature threshold T1, a second preset water temperature threshold T2, and a third preset water temperature threshold T3, 100>T3>T2>T1>50; and is also used to preset water pressure thresholds in the solar steam generator: a first preset water pressure threshold K1, a second preset water pressure threshold K2, and a third preset water pressure threshold K3, 0.5MPa>K3>K2>K1>0.4MPa; The analysis and control device controls the operating state of the driving device according to the data information, including: the analysis and control device controls the operation of the electric heater and the pressure-reducing water pump according to the water temperature data T of the solar water heater, the water pressure data K in the solar steam generator, and the preset water temperature threshold and water pressure threshold; Wherein, if T≤T1, and K≥K3, the analysis and control device controls the pressure-reducing water pump to start and reduce the pressure of the solar steam generator; when K≤K2, the analysis and control device controls the pressure-reducing water pump to stop reducing the pressure; If T≥T3 and K≤K1, the analysis and control device controls the electric heater to start and perform auxiliary heating on the solar steam generator. When K≥K3, the analysis and control device controls the electric heater to stop heating.

6. A steam cycle energy storage control system according to claim 4, characterized in that: The analysis and control device is further used to preset water level thresholds in the solar steam generator: a first water level threshold P1, a second water level threshold P2, P2>P1; The analyzing and controlling device controls the operating state of the driving device according to the data information, and further comprises: the analyzing and controlling device controls the operation of the pressure reducing water pump according to the water level data P in the solar steam generator and a preset water level threshold; Among them, when P≤P1, the analysis and control device controls the pressure reduction pump to start and reduce the pressure of the solar steam generator; When P≥P2, the analysis and control device controls the pressure-reducing water pump to stop reducing the pressure.

7. A steam cycle energy storage control system according to claim 4, characterized in that: The analysis and control device is further used to preset solar radiation intensity thresholds: a first light intensity Q1, a second light intensity Q2, Q2>Q1; The analyzing and controlling device controls the operating state of the driving device according to the data information, and further includes: the analyzing and controlling device controls the operation of the electric heater and the solar reflective heater according to the solar radiation intensity data Q, the water pressure data K in the solar steam generator, and the preset solar radiation intensity threshold and water pressure threshold; If Q≤Q1, the analysis and control device controls the electric heater to start and perform auxiliary heating on the solar steam generator; If K≥K3 or Q≥Q2, the analysis and control device controls the electric heater to stop heating.

8. The steam cycle energy storage control system according to claim 3, characterized in that: The data acquisition device includes a water level sensor, a water pressure sensor, a temperature sensor, a flow sensor and a light sensor.

9. The steam cycle energy storage control system according to claim 1, characterized in that: It also includes a power supply device, which is electrically connected to the driving device, the data acquisition device and the analysis and control device respectively; the power supply device includes a battery and a solar power generation panel, the solar power generation panel is connected to the battery through a line, the solar power generation panel is used to charge the battery, and the battery is used to power the system.

10. The steam cycle energy storage control system according to claim 3, characterized in that: The analysis and control device is further used to calculate the total water flow rate within a preset period according to the water flow rate of the solar water heater.

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