Adaptive temperature control solar energy and gas turbine combined operation device and method

Abstract

The application provides a solar energy and gas turbine combined operation device and method with adaptive temperature control, and belongs to the technical field of distributed energy, which can at least partially solve the problems of frequent start-stop of the existing combustion chamber, no buffer link for mode switching, and single-stage combustion for the supplementary combustion link without adaptive control logic for full working conditions. The application comprises a controller, which cooperates with the temperature data, load data and irradiation data detected by the path adjusting valve and the detection component module to realize adaptive switching of the path with linkage of the double temperature threshold, irradiation threshold and load threshold, relies on the thermal inertia buffer component to suppress the instantaneous fluctuation interference of solar irradiation, effectively avoids frequent start-stop switching of the device path, simultaneously adopts a hierarchical double-path supplementary combustion structure, combines irradiation-supplementary combustion power matching logic to complete accurate temperature control for full working conditions, stabilizes the inlet working medium temperature of the gas turbine, improves the system operation stability, reduces the equipment failure rate, and balances the clean energy utilization rate and the power generation efficiency of the power generation module.

Description

Technical Field

[0001] This invention belongs to the field of distributed energy technology, specifically relating to an adaptive temperature-controlled solar energy and gas turbine combined operation device and method. Background Technology

[0002] Combined solar and gas turbine power generation systems have become an important development direction in the field of distributed energy due to the combination of the cleanliness of solar energy and the high efficiency of gas turbines. However, in actual operation, the intensity of solar irradiance is subject to random and frequent fluctuations due to factors such as day and night, sunshine and cloudy weather, and cloud movement, which leads to significant changes in the air temperature after solar heating, causing many problems for the stable operation of the system.

[0003] Existing solar-gas turbine combined systems mostly employ a simple single-point temperature detection and fixed mode switching approach, which has significant technical drawbacks: First, relying solely on single-point temperature detection to determine whether supplementary combustion is needed lacks linkage analysis between irradiance intensity and temperature. This makes them susceptible to small temperature changes due to instantaneous fluctuations in solar irradiance, leading to frequent start-ups and shutdowns of the combustion chamber, significantly reducing its lifespan and system operational stability. Second, the lack of a buffer mechanism for mode switching means that small fluctuations near the temperature threshold can cause frequent switching of system operating modes, increasing control losses and reducing system response speed. Third, supplementary combustion is often a single-stage combustion process, and the supplementary heating power cannot be precisely adjusted based on temperature differences, easily leading to over- or under-supplementary heating, resulting in large fluctuations in turbine inlet temperature and affecting turbine efficiency and power generation stability. Fourth, the system lacks adaptive control logic across all operating conditions, resulting in poor matching between irradiance intensity and power generation load, and low power generation efficiency under all operating conditions.

[0004] Meanwhile, existing technologies mostly focus on improving the structure of the equipment, lacking a systematic design for the combined operation of solar energy and gas turbines. This results in poor synergy between the equipment and the method, failing to fully leverage the combined advantages of solar thermal power and gas turbines. It is necessary to construct a linkage decision-making logic between temperature and irradiance, design mode-switching buffers and staged combustion structures, and implement a systematic operation method to avoid frequent start-ups and shutdowns of the combustion chamber, thereby improving system stability, response speed, and overall efficiency, and achieving efficient combined operation of solar energy and gas turbines.

[0005] To address this, we propose an adaptive temperature-controlled solar energy and gas turbine combined operation device and method. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art, and to provide an adaptive temperature control solar energy and gas turbine combined operation device and method.

[0007] One aspect of the present invention provides an adaptive temperature control solar and gas turbine combined operation device, including a controller, a detection component module, an air compression module, a solar heating module, a thermal inertia buffer component, a path regulating valve, a staged combustion module, and a power generation module. The inlet of the solar heating module is connected to the outlet pipeline of the air compression module, the thermal inertia buffer component is disposed on the outlet pipeline of the solar heating module, and the outlet of the thermal inertia buffer component is connected to the inlet pipeline of the path regulating valve. The first outlet of the path regulating valve is connected to the high-temperature working fluid inlet pipe of the power generation module, the second outlet of the path regulating valve is connected to the inlet pipe of the staged combustion module, and the outlet of the staged combustion module is connected to the high-temperature working fluid inlet pipe of the power generation module. The detection component module includes a first temperature detection component for collecting the outlet working fluid temperature of the solar heating module, a second temperature detection component for collecting the inlet working fluid temperature of the high-temperature working fluid of the power generation module, a temperature calibration component for collecting the working fluid temperature after the staged combustion module is heated, an irradiance detection component for collecting the solar irradiance intensity, and a load detection component for collecting the power generation load of the power generation module. The controller is electrically connected to the detection component module, the path regulating valve, the staged combustion module, and the air compression module. The controller generates a path switching command based on the relationship between the temperature data collected by the first temperature detection component and the second temperature detection component and a preset temperature threshold. It also generates a combustion regulation command and a compressed air flow regulation command based on the relationship between the data collected by the irradiance detection component, the temperature calibration component, and the load detection component and the corresponding preset thresholds. This allows the working fluid heated by the solar heating module to selectively enter the power generation module directly through the path regulating valve, or to enter the power generation module after being reheated by the staged combustion module.

[0008] Furthermore, the first temperature detection component is installed at the outlet of the solar heating module, located between the thermal inertia buffer component and the path regulating valve; the second temperature detection component is installed at the high-temperature working fluid inlet of the power generation module; and the temperature calibration component is installed in the combustion chamber of the staged combustion module.

[0009] Furthermore, the air compression module includes an air inlet port, a filter assembly, a compressor, a pressure stabilizing assembly, and an air outlet port arranged in sequence, and the compressor is electrically connected to the controller.

[0010] Furthermore, the solar heating module includes a concentrator array, a heating cavity, and a heat insulation layer. The heating cavity has a light-receiving side for the reflected light from the concentrator array to enter, and the heating cavity has a concentrating area for converging the reflected light. The concentrator array is composed of multiple parabolic concentrators arranged in a preset orientation, and the reflected light from the multiple parabolic concentrators can be converged to the concentrating area on the heating cavity. The heat insulation layer is disposed on the outside of the heating cavity, and the heating cavity is provided with a heating channel for conveying high-pressure air. The heating channel has a heated pipe section arranged within the concentrating area.

[0011] Furthermore, the staged combustion module includes a fuel supply component and a main combustion zone, a buffer combustion zone, and a fine-tuning combustion zone connected in sequence. The air inlet of the main combustion zone is connected to the second outlet pipe of the path regulating valve, and the air outlet of the fine-tuning combustion zone is connected to the high-temperature working fluid inlet pipe of the power generation module. The output end of the fuel supply component is provided with a main combustion path and a fine-tuning combustion path. The outlet of the main combustion path is connected to the fuel inlet pipe of the main combustion zone, and the outlet of the fine-tuning combustion path is connected to the fuel inlet pipe of the fine-tuning combustion zone. The fuel flow rate output by the main combustion path and the fine-tuning combustion path is regulated by the controller.

[0012] Specifically, a flame stabilization component is provided in the main combustion zone; the temperature calibration component is provided in the fine-tuning combustion zone.

[0013] Furthermore, the power generation module includes a gas turbine, a generator, and a coupling. The high-temperature working fluid inlet of the gas turbine is connected to the gas outlet pipeline of the fine-tuning combustion zone. The output end of the gas turbine is fixedly connected to the input end of the generator through the coupling. The load detection component is used to detect the load data of the generator. A temperature protection component is provided at the high-temperature working fluid inlet of the gas turbine.

[0014] Another aspect of the present invention provides a method for the combined operation of solar energy and gas turbine with adaptive temperature control, the method being implemented using the aforementioned adaptive temperature control method for the combined operation of solar energy and gas turbine, and comprising the following steps: S1, so that ambient air is filtered, compressed and stabilized by the air compression module and then delivered to the solar heating module; S2. The high-pressure air is delivered from the inlet end of the solar heating module into the heating cavity, so that the sunlight is reflected by the concentrating mirror array and shines into the concentrating area. The high-pressure air absorbs the radiant heat of the sunlight and heats up, and the thermal inertia buffer component absorbs the temperature fluctuations of the high-pressure air. S3. Irradiation data is collected in real time by the irradiation intensity detection component. The first temperature detection component collects the first temperature data of the high-pressure air at the outlet of the solar heating module, and the second temperature detection component collects the second temperature data of the high-pressure air at the inlet of the high-temperature working fluid of the power generation module. The irradiation data, the first temperature data, and the second temperature data are all uploaded to the controller. The controller generates a path switching command based on the difference between the first temperature data, the second temperature data, and the preset switching temperature threshold and the preset working fluid temperature threshold, respectively, and adjusts the flow path of the path regulating valve. S4. When the high-pressure air passes through the staged combustion module in the delivery path, the third temperature data of the high-pressure air in the fine-tuning combustion zone is collected by the temperature calibration component, and the third temperature data is transmitted to the controller. The controller generates a combustion adjustment command based on the difference between the irradiation data, the first temperature data, the second temperature data, the third temperature data and the preset irradiation threshold, the preset switching temperature threshold, the preset working fluid temperature threshold, and the preset combustion temperature threshold, respectively, and regulates the fuel supply of the main combustion path and the fine-tuning combustion path. S5. The high-pressure air that has reached the preset working fluid temperature threshold enters the gas turbine from the high-temperature working fluid inlet of the power generation module and expands to do work. The output end of the gas turbine drives the generator to generate electricity through a coupling. The electrical energy generated by the generator is output through the power supply output module. The load detection component collects the power generation load data of the generator and uploads it to the controller. Based on the difference between the power generation load data and the preset load data, the controller generates a compressed air flow regulation command to adjust the working power of the compressor.

[0015] Furthermore, the circulation path includes an air compression module, a solar heating module, a path regulating valve, a staged combustion module, a power generation module, and an air compression module, a solar heating module, a path regulating valve, and a power generation module.

[0016] Furthermore, the high-pressure air in the staged combustion module sequentially undergoes primary combustion in the main combustion zone, buffering and smoothing in the buffer combustion zone, and secondary combustion in the fine-tuning combustion zone. The third temperature data is the high-pressure air temperature data at the end of the buffering and smoothing process.

[0017] The beneficial effects of this invention are as follows: 1. The temperature threshold judgment algorithm and irradiance intensity-compensation power matching logic built into the controller of this invention, through the linkage decision of temperature and irradiance dual parameters, in conjunction with the thermal inertia buffer component, effectively avoids the problem of frequent switching of high-pressure air delivery path caused by instantaneous fluctuations in solar irradiance, effectively reduces the number of start-ups and shutdowns of the graded combustion module and the failure rate of device operation, and extends the service life of the graded combustion module. 2. In the solar heating module of the present invention, when the solar irradiance is greater than a preset threshold, the sunlight refracted by the concentrator array directly heats the high-pressure air in the heating cavity. The controller identifies that the first temperature data and the second temperature data are greater than the preset switching temperature threshold, and directly skips the staged combustion module and goes directly to the power generation module, maximizing the use of clean energy and achieving zero fuel consumption. 3. The staged combustion module of this invention adopts a three-section structure design: a main combustion zone, a buffer combustion zone, and a fine-tuning combustion zone. Combined with precise energy supply from the main combustion circuit and the fine-tuning combustion circuit, it can dynamically match the combustion power based on real-time detected irradiance data, first temperature data, second temperature data, third temperature data, and power generation load data. This not only quickly compensates for insufficient solar heating but also achieves fine calibration of small temperature fluctuations. It effectively reduces the temperature fluctuation rate at the gas turbine's high-temperature working fluid inlet compared to traditional devices, preventing excessively high or low working fluid temperatures and ensuring the working fluid at the gas turbine inlet is always in the optimal operating temperature range. This improves unit operational stability and power generation efficiency. Simultaneously, it effectively reduces fossil fuel consumption and pollutant emissions. The multi-stage combustion achieves complete fuel combustion, reducing NO... x Emissions of pollutants such as CO have been effectively reduced; 4. This invention achieves closed-loop feedback regulation throughout the entire process by using the controller and the temperature, load, and irradiation data obtained from detection. It has high operational reliability and can dynamically and adaptively adjust according to actual operating conditions. Even under complex operating conditions with drastic fluctuations in irradiation and changes in load, it can still ensure stable and efficient operation of the system, and the operational reliability is effectively improved. 5. This invention adopts a standardized and modular design, with a simple connection method. It can be flexibly combined according to the power demand of distributed generation, adapting to different power generation needs of 10~300kW, and can be widely used in various scenarios such as remote areas, industrial parks, and rural microgrids. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the module connection structure and high-pressure air flow path of an adaptive temperature-controlled solar and gas turbine combined operation device according to a specific embodiment of the present invention. Figure 2 This is a schematic diagram of the air compression module of an adaptive temperature-controlled solar and gas turbine combined operation device according to a specific embodiment of the present invention. Figure 3 This is a schematic diagram of the solar heating module of the adaptive temperature control solar and gas turbine combined operation device of the present invention. Figure 4 This is a schematic diagram of the power generation module of the adaptive temperature-controlled solar and gas turbine combined operation device of the present invention. Figure 5 This is a schematic diagram of the internal structure of the staged combustion module of the adaptive temperature-controlled solar and gas turbine combined operation device of the present invention. Figure 6 This is a schematic diagram of the control logic of the controller for the adaptive temperature control solar and gas turbine combined operation device of the present invention. Figure 7 This is a schematic flowchart of the adaptive temperature control method for combined operation of solar energy and gas turbine according to the present invention.

[0019] The components include: 1. First temperature detection component; 2. Compressor; 3. Irradiation intensity detection component; 4. Thermal inertia buffer component; 5. Main combustion zone; 6. Fine-tuning combustion zone; 7. Fuel supply component; 8. Temperature calibration component; 9. Filter component; 10. Pressure stabilization component; 11. Concentrating lens array; 12. Heating chamber; 13. Heat insulation layer; 14. Concentrating zone; 15. Heating channel; 16. Main combustion path; 17. Fine-tuning combustion path; 18. Buffer combustion zone; and 19. Flame stabilization component. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] The adaptive temperature control solar and gas turbine combined operation device provided in this invention includes a controller, a detection component module, an air compression module, a solar heating module, a thermal inertia buffer component 4, a path regulating valve, a staged combustion module, and a power generation module. The inlet of the solar heating module is connected to the outlet pipeline of the air compression module. The thermal inertia buffer component 4 is disposed on the outlet pipeline of the solar heating module, and the outlet of the thermal inertia buffer component 4 is connected to the inlet pipeline of the path regulating valve. The first outlet of the path regulating valve is connected to the high-temperature working fluid inlet pipe of the power generation module, the second outlet of the path regulating valve is connected to the inlet pipe of the staged combustion module, and the outlet of the staged combustion module is connected to the high-temperature working fluid inlet pipe of the power generation module. The detection component module includes a first temperature detection component 1 for collecting the outlet working fluid temperature of the solar heating module, a second temperature detection component for collecting the inlet working fluid temperature of the high-temperature working fluid of the power generation module, a temperature calibration component 8 for collecting the working fluid temperature after the staged combustion module is heated, an irradiance detection component 3 for collecting the solar irradiance intensity, and a load detection component for collecting the power generation load of the power generation module. The controller is electrically connected to the detection component module, the path regulating valve, the staged combustion module, and the air compression module. The controller generates a path switching command based on the relationship between the temperature data collected by the first temperature detection component 1 and the second temperature detection component and a preset temperature threshold. It also generates a combustion regulation command and a compressed air flow regulation command based on the relationship between the data collected by the irradiance detection component 3, the temperature calibration component 8, and the load detection component and the corresponding preset threshold. This allows the working fluid heated by the solar heating module to selectively enter the power generation module directly through the path regulating valve, or to enter the power generation module after being reheated by the staged combustion module.

[0022] Furthermore, the first temperature detection component 1 is installed at the outlet of the solar heating module, located between the thermal inertia buffer component 4 and the path regulating valve; the second temperature detection component is installed at the high-temperature working fluid inlet of the power generation module; and the temperature calibration component 8 is installed in the combustion chamber of the staged combustion module.

[0023] In one specific embodiment, the air compression module compresses ambient air and delivers it to the solar heating module for heating. During the heating process, the irradiance detection component 3 collects solar irradiance data in real time and transmits it to the controller. When the heated high-pressure air is output from the outlet of the solar heating module, it passes through the thermal inertia buffer component 4, the first temperature detection component 1, and the path regulating valve in sequence before flowing into the power generation module or the staged combustion module. The thermal inertia buffer component 4 is a high-temperature resistant heat storage structure used to absorb the temperature change of the high-pressure air caused by small fluctuations in solar irradiance, effectively avoiding frequent switching of the delivery path due to instantaneous temperature fluctuations, and further improving the overall operational stability of the device. The first temperature detection component 1 is a high-temperature resistant armored thermocouple sensor, which is fixedly installed on the inner wall of the pipe at the outlet of the solar heating module and is in direct contact with the high-pressure air to realize real-time detection of the high-pressure air temperature and upload the detected first temperature data to the controller. As the high-pressure air is continuously delivered, it passes through the second temperature detection component before entering the power generation module, and the second temperature detection component detects its temperature to obtain the second temperature data.

[0024] In this embodiment, the controller uses a built-in temperature threshold judgment algorithm to compare the first temperature data with a pre-stored preset switching temperature threshold. When the first temperature data is lower than the preset switching threshold, the controller controls the path regulating valve, which is a three-way regulating valve, to adjust the delivery path to air compression module - solar heating module - three-way regulating valve - staged combustion module - power generation module. When the high-pressure air enters the staged combustion module, the temperature calibration component 8 inside is a high-temperature resistant armored thermocouple, which is fixedly installed inside the staged combustion module to detect the temperature of the high-pressure air in real time, obtain the third temperature data, and upload it to the controller. The controller uses the built-in irradiance intensity-combustion power matching logic to adjust the fuel flow rate delivered to the staged combustion module in combination with the irradiance data, the first temperature data, the second temperature data, and the third temperature data, so as to achieve precise staged heating of the high-pressure air and make it reach the preset working fluid temperature threshold stored in the controller.

[0025] In this embodiment, when the first temperature data is higher than the preset switching temperature threshold, the delivery path is adjusted to air compression module - solar heating module - three-way regulating valve - power generation module. The high-pressure air heated by the solar heating module is directly input into the power generation module through the three-way regulating valve.

[0026] In this embodiment, when the second temperature data is between the preset switching temperature threshold and the preset working fluid temperature threshold, the current path state remains unchanged.

[0027] In this embodiment, when high-pressure air enters the power generation module, it expands and performs work, converting mechanical energy into electrical energy. During this process, the load detection component monitors the power generation load data of the power generation module in real time and uploads it to the controller for comparison with a preset load threshold. When the load data is greater than the preset load threshold, the controller reduces the power of the air compression module and reduces the delivery flow rate and pressure of the high-pressure air until the load data is within the preset load threshold range. When the load data is less than the preset load threshold, the controller increases the power of the air compression module and increases the delivery flow rate and pressure of the high-pressure air until the load data is within the preset load threshold range.

[0028] Furthermore, the air compression module includes an air inlet port, a filter assembly 9, a compressor 2, a pressure stabilizing assembly 10, and an air outlet port arranged in sequence, and the compressor 2 is electrically connected to the controller.

[0029] In another specific embodiment, the filter component 9 within the air compression module has a filtration accuracy greater than or equal to 5μm, responsible for filtering the ambient air entering the air compression module to prevent particulate matter from damaging the internal components of the device and extending the overall service life of the device; the compressor 2 is a miniature centrifugal compressor that can compress ambient air into high-pressure air of 0.3MPa~0.7MPa; the pressure stabilization component 10 can ensure that the air pressure fluctuation rate output by the air compression module is less than or equal to ±2%, effectively preventing the solar heating module from losing heat due to excessive instantaneous flow or localized overheating due to insufficient flow when heating high-pressure air, resulting in higher and more stable solar energy utilization. To ensure the stability of the high-pressure air flow rate and volume within the entire device, the outlet of the air compression module and the inlet of the solar heating module are connected by seamless flanges to prevent leakage of high-pressure air during transportation, which could affect the overall power generation efficiency and quality of the device. Furthermore, based on the comparison between the received load data and the pre-stored preset load threshold, the controller adjusts the power of compressor 2: when the load data is greater than the preset load threshold, the controller reduces the power of compressor 2 until the load data is within the preset load threshold range; when the load data is less than the preset load threshold, the controller increases the power of compressor 2 until the load data is within the preset load threshold range.

[0030] Furthermore, the solar heating module includes a concentrator array 11, a heating cavity 12, and a heat insulation layer 13. The heating cavity 12 has a light-receiving side for the reflected light from the concentrator array 11 to enter, and the heating cavity 12 has a concentrating area 14 for converging the reflected light. The concentrator array 11 is composed of multiple parabolic concentrators arranged in a preset orientation. The reflected light from the multiple parabolic concentrators can be converged to the concentrating area 14 on the heating cavity 12. The heat insulation layer 13 is disposed on the outside of the heating cavity 12. The heating cavity 12 is provided with a heating channel 15 for conveying high-pressure air. The heating channel 15 has a heated pipe section arranged in the concentrating area 14.

[0031] In the above embodiment, clean high-pressure air enters the heating channel 15 of the heating cavity 12 from the inlet of the solar heating module. After being reflected by the concentrator array 11, sunlight shines on the concentrator area 14 and directly heats the high-pressure air in the heated pipe section, eliminating the heat loss in the intermediate medium heat exchange process. In addition, the heat insulation layer 13 on the outside of the heating cavity 12 can effectively reduce the solar energy loss rate and improve the solar energy utilization rate. After heating is completed, the high-pressure air flows out from the outlet of the heating channel 15.

[0032] Furthermore, the staged combustion module includes a fuel supply component 7 and a main combustion zone 5, a buffer combustion zone 18, and a fine-tuning combustion zone 6 connected in sequence. The air inlet of the main combustion zone 5 is connected to the second outlet pipe of the path regulating valve, and the air outlet of the fine-tuning combustion zone 6 is connected to the high-temperature working fluid inlet pipe of the power generation module. The output end of the fuel supply component 7 is provided with a main combustion path 16 and a fine-tuning combustion path 17. The outlet of the main combustion path 16 is connected to the fuel inlet pipe of the main combustion zone 5, and the outlet of the fine-tuning combustion path 17 is connected to the fuel inlet pipe of the fine-tuning combustion zone 6. The fuel flow rate output by the main combustion path 16 and the fine-tuning combustion path 17 is controlled by the controller.

[0033] Specifically, a flame stabilization component 19 is provided in the main combustion zone 5; and a temperature calibration component 8 is provided in the fine-tuning combustion zone 6.

[0034] In the above embodiment, the high-pressure air heated by the solar heating module passes sequentially through the main combustion zone 5, the buffer combustion zone 18, and the fine-tuning combustion zone 6 via a path regulating valve. The temperature calibration component 8 is a high-temperature resistant armored thermocouple, fixedly installed at the entrance of the fine-tuning combustion zone 6, which detects the third temperature data of the high-pressure air entering the fine-tuning combustion zone 6 in real time and uploads it to the controller. Multiple sets of atomizing high-pressure nozzles are provided in both the main combustion zone 5 and the fine-tuning combustion zone 6. The main combustion path 16 is connected to the pipelines of the multiple sets of atomizing high-pressure nozzles in the main combustion zone 5 and the fine-tuning combustion zone 6. The fine-tuning combustion path 17 is connected to the pipelines of the multiple sets of atomizing high-pressure nozzles in the fine-tuning combustion zone 6. The fuel supply component 7, based on a controller with built-in irradiance intensity-compensation power matching logic, adjusts the fuel flow rate delivered by the fuel supply component 7 to the main combustion path 16 and the fine-tuning combustion path 17 by combining irradiance data, first temperature data, second temperature data, and third temperature data. When the irradiance data is lower than the preset irradiance threshold, or the first temperature data is lower than the preset switching temperature threshold, or the third temperature data is lower than the preset switching temperature threshold, the fuel flow rate is adjusted accordingly. When the data is lower than the preset supplementary combustion temperature threshold, the controller controls the fuel supply component 7 to deliver a larger flow rate of fuel to the main combustion nozzle through the main combustion circuit 16, increasing the flame intensity in the main combustion zone 5 and further heating the high-pressure air to quickly approach the preset working fluid temperature threshold. After passing through the buffer combustion zone 18, the air enters the fine-tuning combustion zone 6. When the second temperature data is lower than the preset working fluid temperature threshold, the controller adjusts the fuel supply component 7 to deliver a larger flow rate of fuel to the fine-tuning combustion nozzle through the fine-tuning combustion circuit 17, increasing the flame intensity in the fine-tuning combustion zone 6 and further improving the fine-tuning accuracy of the high-pressure air temperature in the fine-tuning combustion zone 6, so that it reaches the preset working fluid temperature threshold and enters the high-temperature working fluid inlet of the power generation module. During this process, the main combustion zone 5, buffer combustion zone 18, and fine-tuning combustion zone 6 form a multi-stage combustion chamber that, in conjunction with the controller's regulation of the output flow rate of the fuel supply component 7, provides a stepped heating of the high-pressure air, achieving precise graded supplementary heating of the high-pressure air to reach the preset working fluid temperature threshold stored in the controller.

[0035] In this embodiment, the buffer combustion zone 18 can, on the one hand, buffer and stabilize the flow rate, pressure, and flow field of the high-temperature, high-pressure air after combustion in the main combustion zone 5, weakening the combustion turbulence and airflow pulsation disturbances in the main combustion zone 5, preventing operating condition fluctuations from directly impacting the downstream fine-tuning combustion zone 6, and stabilizing the working fluid delivery state; on the other hand, it allows the working fluid output from the main combustion zone 5 to be fully mixed and heat-exchanged in the buffer combustion zone 18, balancing the overall temperature distribution and eliminating local uneven heating and cooling, providing a uniform and stable intake basis for precise temperature control in the fine-tuning combustion zone 6. Through the three-stage structural layout of coarse adjustment in the main combustion zone 5, steady-state transition in the buffer combustion zone 18, and fine adjustment in the fine-tuning combustion zone 6, combustion control is decoupled, significantly improving the control accuracy of small-range afterburning temperature adjustment in the fine-tuning combustion zone 6, which is in line with the controller's built-in irradiance intensity-afterburning power matching logic and dual temperature threshold control strategy.

[0036] Furthermore, the power generation module includes a gas turbine, a generator, and a coupling. The high-temperature working fluid inlet of the gas turbine is connected to the gas outlet pipeline of the fine-tuning combustion zone 6. The output end of the gas turbine is fixedly connected to the input end of the generator through the coupling. The load detection component is used to detect the load data of the generator. A temperature protection component is provided at the high-temperature working fluid inlet of the gas turbine.

[0037] In one specific implementation, high-pressure air reaching a preset working fluid temperature threshold enters the gas turbine through a temperature protection component at the high-temperature working fluid inlet of the miniature gas turbine. This temperature protection component is set with a critical high-temperature threshold higher than the preset working fluid temperature threshold. When the high-pressure air temperature at the working fluid inlet exceeds the critical high-temperature threshold, a mechanical flow interruption, fuel circuit cutoff, or shutdown signal is triggered to prevent the ultra-high-temperature working fluid from directly entering the miniature gas turbine, thus avoiding high-temperature ablation and deformation of the impeller and seals. After entering the miniature gas turbine, the high-pressure air expands and performs work, driving a permanent magnet synchronous generator to generate electricity via a flexible buffer coupling, thus realizing mechanical... In the conversion of energy into electrical energy, during the operation of the permanent magnet synchronous generator, the load detection component collects the power generation load data of the permanent magnet synchronous generator and uploads it to the controller for comparison with the load threshold stored in the controller: when the load data is lower than the load threshold, the controller reduces the power of compressor 2, reducing the flow rate and pressure of high-pressure air delivered by the air compression module to the solar heating module; conversely, when the load data is higher than the load threshold, the controller adjusts the power of high-pressure compressor 2, increasing the flow rate and pressure of high-pressure air delivered by the air compression module to the solar heating module, in order to match the current power generation load condition and form a closed-loop feedback regulation throughout the entire process.

[0038] To help better understand the present invention, in conjunction with Figures 1 to 7 A more comprehensive and specific embodiment of the present invention is described, in which the present invention provides an adaptive temperature-controlled solar and gas turbine joint operation method, which is implemented using the aforementioned adaptive temperature-controlled solar and gas turbine joint operation device, and includes the following steps: S1, so that ambient air is filtered, compressed and stabilized by the air compression module and then delivered to the solar heating module; S2. The high-pressure air is delivered from the inlet end of the solar heating module into the heating cavity 12, so that the sunlight is reflected by the concentrating mirror array 11 and shines into the concentrating area 14. The high-pressure air absorbs the radiant heat of the sunlight to raise the temperature, and the thermal inertia buffer component 4 absorbs the temperature fluctuation of the high-pressure air. S3. Irradiation data is collected in real time by the irradiation intensity detection component 3. The first temperature detection component 1 collects the first temperature data of the high-pressure air at the outlet of the solar heating module, and the second temperature detection component collects the second temperature data of the high-pressure air at the inlet of the high-temperature working fluid of the power generation module. The irradiation data, the first temperature data, and the second temperature data are all uploaded to the controller. The controller generates a path switching command based on the difference between the first temperature data, the second temperature data, and the preset switching temperature threshold and the preset working fluid temperature threshold, respectively, and adjusts the flow path of the path regulating valve. S4. When the high-pressure air passes through the staged combustion module in the delivery path, the third temperature data of the high-pressure air in the fine-tuning combustion zone 6 is collected by the temperature calibration component 8, and the third temperature data is transmitted to the controller. The controller generates a combustion adjustment command based on the difference between the irradiation data, the first temperature data, the second temperature data, the third temperature data and the preset irradiation threshold, the preset switching temperature threshold, the preset working fluid temperature threshold, and the preset combustion temperature threshold, respectively, and controls the fuel supply of the main combustion path 16 and the fine-tuning combustion path 17. S5. The high-pressure air that has reached the preset working fluid temperature threshold enters the gas turbine from the high-temperature working fluid inlet of the power generation module and expands to do work. The output end of the gas turbine drives the generator to generate electricity through a coupling. The electrical energy generated by the generator is output through the power supply output module. The load detection component collects the power generation load data of the generator and uploads it to the controller. Based on the difference between the power generation load data and the preset load data, the controller generates a compressed air flow regulation command to adjust the working power of the compressor 2.

[0039] Specifically, the flow path includes an air compression module, a solar heating module, a path regulating valve, a staged combustion module, a power generation module, and an air compression module, a solar heating module, a path regulating valve, and a power generation module.

[0040] Specifically, the high-pressure air in the staged combustion module sequentially undergoes primary combustion in the main combustion zone 5, buffering and smoothing in the buffer combustion zone 18, and secondary combustion in the fine-tuning combustion zone 6. The third temperature data is the high-pressure air temperature data at the end of the buffering and smoothing process.

[0041] In this embodiment, the device is adapted to a 50kW-class distributed solar-gas turbine combined power generation scenario.

[0042] In step S1, the filter component 9 in the air compression module is a filter component with a filtration accuracy greater than or equal to 5μm, the compressor 2 is a micro centrifugal compressor, and the outlet of the air compression module is connected to the inlet of the solar heating module through a high-temperature and high-pressure resistant sealed pipeline; ambient air enters the air compression module from the air inlet, is filtered by the filter component 9, and is compressed into high-pressure air of 0.5MPa by the micro centrifugal compressor, and is then stabilized by the pressure stabilizing component 10 before being transported to the solar heating module for heating through the high-temperature and high-pressure resistant sealed pipeline.

[0043] In step S2, clean high-pressure air enters the heating channel 15 of the heating cavity 12 from the inlet of the solar heating module. After being reflected by the concentrator array 11, sunlight shines on the concentrator area 14 and directly heats the high-pressure air in the heated pipe section, eliminating the heat loss in the intermediate medium heat exchange process. In addition, the heat insulation layer 13 on the outside of the heating cavity 12 can effectively reduce the solar energy loss rate and improve the solar energy utilization rate.

[0044] In step S3, the path regulating valve is a three-way regulating valve. When the first temperature data is lower than the preset switching threshold, the controller controls the path regulating valve, which is a three-way regulating valve, and adjusts the delivery path to air compression module - solar heating module - three-way regulating valve - staged combustion module - power generation module. When the first temperature data is higher than the preset switching temperature threshold, the delivery path is adjusted to air compression module - solar heating module - three-way regulating valve - power generation module, and the high-pressure air heated by the solar heating module is directly input to the power generation module through the three-way regulating valve. When the second temperature data is between the preset switching temperature threshold and the preset working fluid temperature threshold, the current path state remains unchanged.

[0045] In step S4, a main combustion nozzle is installed in the main combustion zone 5, and the main combustion path 16 is connected to the fuel inlet pipe of the main combustion nozzle. A fine-tuning combustion nozzle is installed in the fine-tuning combustion zone 6, and the fine-tuning combustion path 17 is connected to the fuel inlet pipe of the fine-tuning combustion nozzle. Both the main combustion nozzle and the fine-tuning combustion nozzle are atomizing high-pressure nozzles. When the irradiation data is lower than the preset irradiation threshold, or the first temperature data is lower than the preset switching temperature threshold, or the third temperature data is lower than the preset afterburning temperature threshold, the controller controls the fuel supply component 7 to deliver a larger fuel flow rate to the main combustion nozzle through the main combustion path 16. The flame intensity in the main combustion zone 5 further heats the high-pressure air, causing it to quickly approach the preset working fluid temperature threshold. After passing through the buffer combustion zone 18, it enters the fine-tuning combustion zone 6. When the second temperature data is lower than the preset working fluid temperature threshold, the controller controls the fuel supply component 7 to deliver a larger fuel flow rate to the fine-tuning combustion nozzle through the fine-tuning combustion path 17, thereby increasing the flame intensity in the fine-tuning combustion zone 6. This further improves the fine-tuning accuracy of the high-pressure air temperature in the fine-tuning combustion zone 6, effectively reducing temperature deviation and allowing it to reach the preset working fluid temperature threshold before entering the high-temperature working fluid inlet of the power generation module.

[0046] In step S5, the gas turbine is a miniature gas turbine, the coupling is a flexible buffer coupling, and the generator is a permanent magnet synchronous generator. High-pressure air reaching the preset working fluid temperature threshold enters the gas turbine from the high-temperature working fluid inlet of the miniature gas turbine through a temperature protection component. This temperature protection component is a high-temperature resistant fusible thermal protector, and it is set with a critical high-temperature threshold higher than the preset working fluid temperature threshold. When the high-pressure air temperature at the high-temperature working fluid inlet exceeds the critical high-temperature threshold, the fusible alloy inside the high-temperature resistant fusible thermal protector automatically melts, triggering a mechanical flow interruption, cutting off the fuel circuit, or a shutdown signal to prevent the ultra-high-temperature working fluid from directly entering the miniature gas turbine and avoiding high-temperature ablation and deformation of the impeller and seals. After the air turbine expands, it performs work and drives the permanent magnet synchronous generator to generate electricity through the elastic buffer coupling, realizing the conversion of mechanical energy into electrical energy. During the operation of the permanent magnet synchronous generator, the load detection component collects the power generation load data of the permanent magnet synchronous generator and uploads it to the controller for comparison with the load threshold stored in the controller: when the load data is lower than the load threshold, the controller reduces the power of compressor 2, reducing the flow rate and pressure of high-pressure air delivered by the air compression module to the solar heating module; conversely, when the load data is higher than the load threshold, the controller adjusts the power of high-pressure compressor 2, increasing the flow rate and pressure of high-pressure air delivered by the air compression module to the solar heating module to match the current power generation load condition, forming a closed-loop feedback regulation throughout the entire process.

[0047] In summary, the embodiments disclosed herein have at least the following technical effects: 1. The temperature threshold judgment algorithm and irradiance intensity-compensation power matching logic built into the controller of this invention, through the linkage decision of temperature and irradiance dual parameters, in conjunction with the thermal inertia buffer component, effectively avoids the problem of frequent switching of high-pressure air delivery path caused by instantaneous fluctuations in solar irradiance, effectively reduces the number of start-ups and shutdowns of the graded combustion module and the failure rate of device operation, and extends the service life of the graded combustion module. 2. In the solar heating module of the present invention, when the solar irradiance is greater than a preset threshold, the sunlight refracted by the concentrator array directly heats the high-pressure air in the heating cavity. The controller identifies that the first temperature data and the second temperature data are greater than the preset switching temperature threshold, and directly skips the staged combustion module and goes directly to the power generation module, maximizing the use of clean energy and achieving zero fuel consumption. 3. The staged combustion module of this invention adopts a three-section structure design: a main combustion zone, a buffer combustion zone, and a fine-tuning combustion zone. Combined with precise energy supply from the main combustion circuit and the fine-tuning combustion circuit, it can dynamically match the combustion power based on real-time detected irradiance data, first temperature data, second temperature data, third temperature data, and power generation load data. This not only quickly compensates for insufficient solar heating but also achieves fine calibration of small temperature fluctuations. It effectively reduces the temperature fluctuation rate at the gas turbine's high-temperature working fluid inlet compared to traditional devices, preventing the working fluid temperature from being too high or too low. This ensures the working fluid at the gas turbine inlet is always in the optimal operating temperature range, improving unit operational stability and power generation efficiency. Simultaneously, it effectively reduces fossil fuel consumption and pollutant emissions. The multi-stage combustion achieves complete fuel combustion, reducing NO... x Emissions of pollutants such as CO have been effectively reduced; 4. This invention achieves closed-loop feedback regulation throughout the entire process by using the controller and the temperature, load, and irradiation data obtained from detection. It has high operational reliability and can dynamically and adaptively adjust according to actual operating conditions. Even under complex operating conditions with drastic fluctuations in irradiation and changes in load, it can still ensure stable and efficient operation of the system, and the operational reliability is effectively improved. 5. This invention adopts a standardized and modular design, with a simple connection method. It can be flexibly combined according to the power demand of distributed generation, adapting to different power generation needs of 10~300kW, and can be widely used in various scenarios such as remote areas, industrial parks, and rural microgrids.

[0048] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A solar and gas turbine combined operation device with adaptive temperature control, characterized in that, It includes a controller, a detection module, an air compression module, a solar heating module, a thermal inertia buffer module, a path regulating valve, a staged combustion module, and a power generation module. The inlet of the solar heating module is connected to the outlet pipeline of the air compression module. The thermal inertia buffer module is disposed on the outlet pipeline of the solar heating module, and the outlet of the thermal inertia buffer module is connected to the inlet pipeline of the path regulating valve. The first outlet of the path regulating valve is connected to the high-temperature working fluid inlet pipe of the power generation module, the second outlet of the path regulating valve is connected to the inlet pipe of the staged combustion module, and the outlet of the staged combustion module is connected to the high-temperature working fluid inlet pipe of the power generation module. The detection component module includes a first temperature detection component for collecting the outlet working fluid temperature of the solar heating module, a second temperature detection component for collecting the inlet working fluid temperature of the high-temperature working fluid of the power generation module, a temperature calibration component for collecting the working fluid temperature after the staged combustion module is heated, an irradiance detection component for collecting the solar irradiance intensity, and a load detection component for collecting the power generation load of the power generation module. The controller is electrically connected to the detection component module, the path regulating valve, the staged combustion module, and the air compression module. The controller generates a path switching command based on the relationship between the temperature data collected by the first temperature detection component and the second temperature detection component and a preset temperature threshold. It also generates a combustion regulation command and a compressed air flow regulation command based on the relationship between the data collected by the irradiance detection component, the temperature calibration component, and the load detection component and the corresponding preset thresholds. This allows the working fluid heated by the solar heating module to selectively enter the power generation module directly through the path regulating valve, or to enter the power generation module after being reheated by the staged combustion module.

2. The adaptive temperature-controlled solar and gas turbine combined operation device according to claim 1, characterized in that, The first temperature detection component is installed at the outlet of the solar heating module, located between the thermal inertia buffer component and the path regulating valve. The second temperature detection component is installed at the high-temperature working fluid inlet of the power generation module. The temperature calibration component is installed in the combustion chamber of the staged combustion module.

3. The adaptive temperature-controlled solar and gas turbine combined operation device according to claim 1, characterized in that, The air compression module includes an air inlet port, a filter assembly, a compressor, a pressure stabilizing assembly, and an air outlet port arranged in sequence, and the compressor is electrically connected to the controller.

4. The adaptive temperature-controlled solar and gas turbine combined operation device according to claim 1, characterized in that, The solar heating module includes a concentrator array, a heating cavity, and a heat insulation layer. The heating cavity has a light-receiving side for the reflected light from the concentrator array to enter, and a concentrating area for converging the reflected light. The concentrator array consists of multiple parabolic concentrators arranged in a preset orientation, and the reflected light from the multiple parabolic concentrators can be converged to the concentrating area on the heating cavity. The heat insulation layer is disposed on the outside of the heating cavity, and a heating channel for conveying high-pressure air is disposed inside the heating cavity. The heating channel has a heated pipe section arranged within the concentrating area.

5. The adaptive temperature-controlled solar and gas turbine combined operation device according to claim 1, characterized in that, The staged combustion module includes a fuel supply component and a main combustion zone, a buffer combustion zone, and a fine-tuning combustion zone connected in sequence. The air inlet of the main combustion zone is connected to the second outlet pipe of the path regulating valve, and the air outlet of the fine-tuning combustion zone is connected to the high-temperature working fluid inlet pipe of the power generation module. The output end of the fuel supply component is provided with a main combustion path and a fine-tuning combustion path. The outlet of the main combustion path is connected to the fuel inlet pipe of the main combustion zone, and the outlet of the fine-tuning combustion path is connected to the fuel inlet pipe of the fine-tuning combustion zone. The fuel flow rate output by the main combustion path and the fine-tuning combustion path is regulated by the controller.

6. The adaptive temperature-controlled solar and gas turbine combined operation device according to claim 5, characterized in that, A flame stabilization component is provided in the main combustion zone; the temperature calibration component is provided in the fine-tuning combustion zone.

7. The adaptive temperature-controlled solar and gas turbine combined operation device according to claim 5, characterized in that, The power generation module includes a gas turbine, a generator, and a coupling. The high-temperature working fluid inlet of the gas turbine is connected to the gas outlet pipeline of the fine-tuning combustion zone. The output end of the gas turbine is fixedly connected to the input end of the generator through the coupling. The load detection component is used to detect the load data of the generator. A temperature protection component is provided at the high-temperature working fluid inlet of the gas turbine.

8. A method for joint operation of solar energy and gas turbine with adaptive temperature control, characterized in that, The method is implemented using a solar and gas turbine combined operation device with adaptive temperature control according to any one of claims 1 to 7, and includes the following steps: S1, so that ambient air is filtered, compressed and stabilized by the air compression module and then delivered to the solar heating module; S2. The high-pressure air is delivered from the inlet end of the solar heating module into the heating cavity, so that the sunlight is reflected by the concentrating mirror array and shines into the concentrating area. The high-pressure air absorbs the radiant heat of the sunlight and heats up, and the thermal inertia buffer component absorbs the temperature fluctuations of the high-pressure air. S3. Irradiation data is collected in real time by the irradiation intensity detection component. The first temperature detection component collects the first temperature data of the high-pressure air at the outlet of the solar heating module, and the second temperature detection component collects the second temperature data of the high-pressure air at the inlet of the high-temperature working fluid of the power generation module. The irradiation data, the first temperature data, and the second temperature data are all uploaded to the controller. The controller generates a path switching command based on the difference between the first temperature data, the second temperature data, and the preset switching temperature threshold and the preset working fluid temperature threshold, respectively, and adjusts the flow path of the path regulating valve. S4. When the high-pressure air passes through the staged combustion module in the delivery path, the third temperature data of the high-pressure air in the fine-tuning combustion zone is collected by the temperature calibration component, and the third temperature data is transmitted to the controller. The controller generates a combustion adjustment command based on the difference between the irradiation data, the first temperature data, the second temperature data, the third temperature data and the preset irradiation threshold, the preset switching temperature threshold, the preset working fluid temperature threshold, and the preset combustion temperature threshold, respectively, and regulates the fuel supply of the main combustion path and the fine-tuning combustion path. S5. The high-pressure air that has reached the preset working fluid temperature threshold enters the gas turbine from the high-temperature working fluid inlet of the power generation module and expands to do work. The output end of the gas turbine drives the generator to generate electricity through a coupling. The electrical energy generated by the generator is output through the power supply output module. The load detection component collects the power generation load data of the generator and uploads it to the controller. Based on the difference between the power generation load data and the preset load data, the controller generates a compressed air flow regulation command to adjust the working power of the compressor.

9. The adaptive temperature control method for combined operation of solar energy and gas turbine according to claim 8, characterized in that, The circulation path includes an air compression module, a solar heating module, a path regulating valve, a staged combustion module, a power generation module, and an air compression module, a solar heating module, a path regulating valve, and a power generation module.

10. The adaptive temperature control method for combined operation of solar energy and gas turbine according to claim 8, characterized in that, The high-pressure air in the staged combustion module passes through the primary combustion zone, the buffer smoothing zone, and the secondary combustion zone in sequence. The third temperature data is the high-pressure air temperature data at the end of the buffer smoothing.

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