Photo-thermal power generation system

Abstract

The invention provides a photo-thermal power generation system, and belongs to the technical field of solar photo-thermal power generation. The photo-thermal power generation system provided by the invention comprises a mirror field; an air cooling tower; the heat collector is arranged at the top of the air cooling tower; the circulating assembly is arranged in the air cooling tower, and the circulating assembly is connected with the heat collector; the anti-vibration assembly is arranged below the heat collector; a steam generating assembly; the indirect air cooling assembly comprises a condensation part and a condensation liquid pump, the condensation part and the condensation liquid pump are both arranged outside the air cooling tower, the condensation part is connected with the steam generation assembly through a first pipeline and a second pipeline, and the condensation liquid pump is arranged on the first pipeline; the first heat exchanger is arranged on the first pipeline and connected with the circulation assembly. According to the photo-thermal power generation system, the heat collector is arranged at the top of the air cooling tower, a heat absorption tower does not need to be additionally arranged, and the production and construction cost is reduced. Meanwhile, the circulating assembly is arranged in the air cooling tower, so that heat loss existing when the environment temperature is low is reduced, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of solar thermal power generation, and particularly to a solar thermal power generation system. Background Art

[0002] Solar thermal power generation is a technology that uses solar energy to generate electricity. It generates high-temperature heat energy by concentrating sunlight, and then drives a steam turbine generator set to generate electricity. Solar thermal power generation technology has the advantages of being clean, environmentally friendly, and sustainable, and is one of the important development directions in the field of renewable energy.

[0003] A solar thermal power generation system is used to convert solar energy into electrical energy. The solar thermal power generation system mainly includes a mirror field, an air cooling tower, an absorption tower, as well as a heat exchanger and a steam turbine generator set. By tracking the movement of the sun in the mirror field, sunlight is reflected and concentrated on the absorption tower, converting sunlight into heat energy. Then, the heat exchanger is used for the transfer and conversion of heat energy, enabling the steam turbine generator set to use this heat energy to drive the generator to generate electricity.

[0004] However, in a cold environment, additional heat preservation measures need to be taken for the absorption tower and the air cooling tower to avoid heat loss and the problem of cooling water freezing, thus greatly increasing the production and construction costs. Summary of the Invention

[0005] This application provides a solar thermal power generation system to solve the problem of high production and construction costs of existing solar thermal power generation systems in cold regions.

[0006] This application provides a solar thermal power generation system, including:

[0007] A mirror field for concentrating direct solar light;

[0008] An air cooling tower arranged at the center of the mirror field;

[0009] A collector arranged on the top of the air cooling tower, which is used to collect the direct solar light concentrated by the mirror field and convert it into heat energy;

[0010] A circulation component arranged in the air cooling tower, and the circulation component is connected to the collector;

[0011] An anti-vibration component arranged below the collector;

[0012] A steam generation component;

[0013] An indirect air cooling component, including a condensation part and a condensate pump. Both the condensation part and the condensate pump are arranged outside the air cooling tower. The condensation part is connected to the steam generation component through a first pipeline and a second pipeline, and the condensate pump is arranged on the first pipeline;

[0014] The first heat exchanger is disposed on the first pipeline and is connected to the circulation assembly.

[0015] In a possible implementation, for the solar thermal power generation system provided in this application, the indirect air cooling assembly further includes a circulating pipeline connected end to end. A part of the circulating pipeline is disposed inside the condensation member to cool the steam inside the condensation member.

[0016] In a possible implementation, for the solar thermal power generation system provided in this application, the indirect air cooling assembly further includes a circulating liquid pump, and the circulating liquid pump is disposed on the circulating pipeline.

[0017] In a possible implementation, for the solar thermal power generation system provided in this application, the first pipeline includes a liquid inlet section and a steam inlet section. The two ends of the steam inlet section are respectively connected to the first heat exchanger and the steam generating assembly, and the two ends of the liquid inlet section are respectively connected to the condensation member and the first heat exchanger.

[0018] In a possible implementation, for the solar thermal power generation system provided in this application, the indirect air cooling assembly further includes a third pipeline and a second heat exchanger. The two ends of the third pipeline are respectively connected to the liquid inlet section and the steam inlet section, and both the third pipeline and the circulating pipeline penetrate through the second heat exchanger.

[0019] In a possible implementation, for the solar thermal power generation system provided in this application, the steam generating assembly includes:

[0020] A steam turbine, which is connected to the indirect air cooling assembly through the first pipeline and the second pipeline;

[0021] A generator, which is connected to the steam turbine.

[0022] In a possible implementation, for the solar thermal power generation system provided in this application, the circulation assembly includes:

[0023] A cold tank, which is connected to the collector through a rising pipeline, and a heat storage member is disposed inside the cold tank;

[0024] A hot tank, which is connected to the collector through a descending pipeline;

[0025] A first circulation pump, which is disposed on the cold tank, and the first circulation pump is used to pump the heat storage member into the rising pipeline;

[0026] A second circulation pump, which is disposed on the hot tank, and the second circulation pump is used to pump the heat storage member into the first heat exchanger.

[0027] In a possible implementation, for the solar thermal power generation system provided by the present application, the circulation assembly further includes a fourth pipeline, and both ends of the fourth pipeline are respectively connected to the hot tank and the cold tank.

[0028] In a possible implementation, for the solar thermal power generation system provided by the present application, both the first pipeline and the fourth pipeline penetrate through the first heat exchanger.

[0029] In a possible implementation, for the solar thermal power generation system provided by the present application, the circulation assembly further includes a fifth pipeline and a third circulation pump. The fifth pipeline is respectively communicated with the cold tank and the hot tank, and the third circulation pump is arranged on the fifth pipeline.

[0030] The solar thermal power generation system provided by the present application includes a mirror field for concentrating direct solar light; an air cooling tower arranged at the center of the mirror field; a collector arranged at the top of the air cooling tower. The collector is used for collecting the direct solar light concentrated by the mirror field and converting it into heat energy; a circulation assembly arranged in the air cooling tower, and the circulation assembly is connected to the collector; an anti-vibration assembly arranged below the collector; a steam generation assembly; an indirect air cooling assembly including a condensation member and a condensate pump. The condensation member and the condensate pump are both arranged outside the air cooling tower. The condensation member is connected to the steam generation assembly through a first pipeline and a second pipeline, and the condensate pump is arranged on the first pipeline; a first heat exchanger arranged on the first pipeline and connected to the circulation assembly. By arranging the collector at the top of the air cooling tower, the solar thermal power generation system provided by the present application does not require an additional heat absorption tower, reducing the production and construction costs. At the same time, by arranging the circulation assembly in the air cooling tower, the heat loss existing when the environmental temperature is relatively low is reduced, and the heat exchange efficiency is improved. Description of the Drawings

[0031] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0032] Figure 1 Structural schematic of the solar thermal power generation system provided by the embodiment of the present application Figure 1 ;

[0033] Figure 2 Structural schematic of the solar thermal power generation system provided by the embodiment of the present application Figure 2 .

[0034] Description of the Reference Numerals:

[0035] 100 - mirror field;

[0036] 200 - air cooling tower;

[0037] 300 - collector;

[0038] 400 - Circulation component; 411 - Cold tank; 412 - Hot tank; 413 - First circulation pump; 414 - Second circulation pump; 415 - Rising pipeline; 416 - Falling pipeline; 417 - Fourth pipeline; 418 - Fifth pipeline; 419 - Third circulation pump;

[0039] 500 - Vibration - resistant component;

[0040] 600 - Steam - generating component;

[0041] 700 - Indirect air - cooling component; 711 - Condensing piece; 712 - Condensate pump; 713 - First pipeline; 7131 - Liquid - inlet section; 7132 - Steam - inlet section; 714 - Second pipeline; 715 - Circulation pipeline; 716 - Circulating liquid pump; 717 - Third pipeline; 718 - Second heat exchanger;

[0042] 800 - First heat exchanger.

[0043] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed embodiments

[0044] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0045] In the embodiments of the present application, the orientation or positional relationships indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements, or components must have a specific orientation or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent orientation or positional relationships, some of the above - mentioned terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present application can be understood according to specific circumstances.

[0046] In addition, the terms "arranged", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0047] In the description of the present application, the terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims, and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0048] In the embodiments of the present application, words such as "exemplarily" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0049] Unless otherwise specified, the term "plurality" means two or more.

[0050] As described in the background art, solar thermal power generation is a technology that uses solar energy to generate electricity. It generates high-temperature thermal energy by concentrating sunlight, and then drives a steam turbine generator set to generate electricity. Solar thermal power generation technology has the advantages of being clean, environmentally friendly, and sustainable, and is one of the important development directions in the field of renewable energy.

[0051] A solar thermal power generation system is used to convert solar energy into electrical energy. The solar thermal power generation system mainly includes a mirror field, an air cooling tower, a heat absorption tower, as well as a heat exchanger and a steam turbine generator set. By tracking the movement of the sun in the mirror field, sunlight is reflected and concentrated on the heat absorption tower, converting sunlight into thermal energy. Then, the heat exchanger is used for heat transfer and conversion, enabling the steam turbine generator set to use this thermal energy to drive the generator to generate electricity.

[0052] However, in a cold environment, additional heat preservation measures need to be taken for the heat absorption tower and the air cooling tower to avoid heat loss and the problem of cooling water freezing, thus greatly increasing the production and construction costs.

[0053] To solve the above problems, the present application provides a solar thermal power generation system, including a mirror field for concentrating direct solar light; an air-cooled tower disposed at the center of the mirror field; a collector disposed on top of the air-cooled tower, which is used to collect the direct solar light concentrated by the mirror field and convert it into heat energy; a circulation component disposed inside the air-cooled tower and connected to the collector; an anti-vibration component disposed below the collector; a steam generation component; an indirect air-cooling component including a condensation member and a condensate pump, both the condensation member and the condensate pump are disposed outside the air-cooled tower, the condensation member is connected to the steam generation component through a first pipeline and a second pipeline, and the condensate pump is disposed on the first pipeline; a first heat exchanger disposed on the first pipeline and connected to the circulation component. The solar thermal power generation system provided by the present application reduces the production and construction costs by disposing the collector on top of the air-cooled tower without the need to additionally set up an absorber tower. At the same time, by disposing the circulation component inside the air-cooled tower, the heat loss existing at a relatively low ambient temperature is reduced, and the heat exchange efficiency is improved.

[0054] The following specifically describes the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems with specific embodiments. The following several specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0055] Please refer to Figure 1 and Figure 2 This embodiment provides a solar thermal power generation system, including a mirror field 100 for concentrating direct solar light; an air-cooled tower 200 disposed at the center of the mirror field 100; a collector 300 disposed on top of the air-cooled tower 200, which is used to collect the direct solar light concentrated by the mirror field 100 and convert it into heat energy; a circulation component 400 disposed inside the air-cooled tower 200 and connected to the collector 300; an anti-vibration component 500 disposed below the collector 300; a steam generation component 600; an indirect air-cooling component 700 including a condensation member 711 and a condensate pump 712, both the condensation member 711 and the condensate pump 712 are disposed outside the air-cooled tower 200, the condensation member 711 is connected to the steam generation component 600 through a first pipeline 713 and a second pipeline 714, and the condensate pump 712 is disposed on the first pipeline 713; a first heat exchanger 800 disposed on the first pipeline 713 and connected to the circulation component 400.

[0056] Among them, the mirror field 100 is mainly composed of a large number of heliostats, and each heliostat is a concentrating system capable of independently tracking the sun. The heliostats in the mirror field 100 are arranged in a specific array to form a large-scale reflecting surface for capturing and reflecting direct solar light, and then focusing the captured solar energy on the collector 300. Thus, the conversion of solar energy to heat energy is achieved.

[0057] In this embodiment, the circulation component 400 can absorb the thermal energy in the collector 300 and transfer the thermal energy to the steam generation component 600 through the first heat exchanger 800, thereby generating high-temperature and high-pressure steam and using the steam to generate electricity, realizing the conversion of solar energy to electrical energy.

[0058] In this embodiment, the indirect air cooling component 700 is a cooling component, including a condensation member 711 and a condensate pump 712. When the high-temperature and high-pressure steam performs work, it will enter the condensation member 711 for condensation, and the condensate is transported and circulated through the condensate pump 712.

[0059] In this embodiment, the condensation member 711 is a condenser, which is connected to the steam generation component 600 through the second pipeline 714 to receive high-temperature steam and condense the steam into condensate.

[0060] Specifically, in this embodiment, both the collector 300 and the circulation component 400 are arranged inside the air cooling tower 200, so that there is no need to additionally set up an absorption tower, saving the production and construction costs. In a cold environment, since a large amount of heat is stored in the circulation component 400, arranging the circulation component 400 inside the air cooling tower 200 can avoid heat loss caused by heat exchange between the heat stored in the circulation component 400 and the surrounding low-temperature air. In addition, in this embodiment, by setting the indirect air cooling component 700, the rapid condensation of steam is realized, improving the circulation efficiency.

[0061] At the same time, arranging the collector 300 at the top of the air cooling tower 200 provides sufficient space for the installation of the collector 300, enabling the collector to better utilize solar energy resources, directly receive the radiation energy from the sun, thereby reducing the difficulty of concentrating light and improving the heat collection efficiency.

[0062] In addition, the solar thermal power generation system provided in this embodiment further includes a vibration-resistant component 500, which is arranged below the collector 300 to prevent the collector 300 from being damaged due to vibration during operation.

[0063] In this embodiment, the vibration-resistant component 500 is composed of a plurality of springs. In other embodiments, the specific structure of the vibration-resistant component 500 can also be adaptively selected according to actual needs.

[0064] Further, in an optional embodiment, the indirect air cooling component 700 further includes a circulating pipeline 715 connected end to end. The circulating pipeline 715 is partially arranged inside the condensation member 711 to cool the steam inside the condensation member 711.

[0065] Specifically, in this embodiment, a cooling medium circulates in the circulation pipeline 715. Part of the circulation pipeline 715 penetrates through the condensation member 711, so as to exchange heat with the high-temperature steam entering the condensation member 711, causing the steam to condense into condensate, thereby realizing the rapid condensation of the steam.

[0066] In this embodiment, the part of the circulation pipeline 715 penetrating through the condensation member 711 is coiled inside the condensation member 711. Its specific arrangement can be comprehensively considered according to factors such as the specific structure of the condensation member 711 and the cooling requirements. This embodiment does not impose any restrictions on this.

[0067] Furthermore, in an alternative embodiment, the indirect air-cooling assembly 700 further includes a circulating liquid pump 716, and the circulating liquid pump 716 is arranged on the circulation pipeline 715.

[0068] Specifically, in this embodiment, the circulating liquid pump 716 is arranged on the circulation pipeline 715. The circulating liquid pump 716 can provide power for the cooling medium in the circulation pipeline 715 to ensure the smooth flow of the cooling medium in the circulating liquid pump 716. In addition, setting the circulating liquid pump 716 can not only ensure the continuity of the flow of the cooling medium, but also accurately control the flow rate and flow velocity of the cooling medium to achieve precise control of the condensation efficiency.

[0069] Furthermore, in an alternative embodiment, the first pipeline 713 includes a liquid inlet section 7131 and a steam inlet section 7132. The two ends of the steam inlet section 7132 are respectively connected to the first heat exchanger 800 and the steam generating assembly 600, and the two ends of the liquid inlet section 7131 are respectively connected to the condensation member 711 and the first heat exchanger 800.

[0070] Specifically, in this embodiment, the first pipeline 713 includes a liquid inlet section 7131 and a steam inlet section 7132. The two ends of the steam inlet section 7132 are respectively connected to the first heat exchanger 800 and the steam generating assembly 600. The high-temperature and high-pressure steam flowing in the steam inlet section 7132 enters the steam generating assembly 600 through the steam inlet section 7132 to do work, and then is converted into high-temperature and low-pressure steam and enters the condensation member 711 through the second pipeline 714 to condense into a liquid state, and then flows into the liquid inlet section 7131 and re-enters the first heat exchanger 800 to exchange heat with the circulation assembly 400, and is converted into high-temperature and high-pressure steam for circulation, thereby realizing the continuous utilization of heat energy and the recycling of steam, ensuring the efficient conversion of heat energy and the stable operation of the system.

[0071] Furthermore, in an alternative embodiment, the indirect air-cooling assembly 700 further includes a third pipeline 717 and a second heat exchanger 718. The two ends of the third pipeline 717 are respectively connected to the liquid inlet section 7131 and the steam inlet section 7132, and both the third pipeline 717 and the circulation pipeline 715 penetrate through the second heat exchanger 718.

[0072] Specifically, in this embodiment, the second heat exchanger 718 is disposed on the circulation pipeline 715 and the third pipeline 717. The two ends of the third pipeline 717 are respectively connected to the liquid inlet section 7131 and the steam inlet section 7132. When the condensate in the liquid inlet section 7131 enters the first heat exchanger 800 for heat exchange and is converted into high-temperature and high-pressure steam, part of the high-temperature and high-pressure steam enters the second heat exchanger 718 through the third pipeline 717, exchanges heat with the cooling medium in the circulation pipeline 715, condenses into condensate, and then enters the liquid inlet section 7131. Through the arrangement of the third pipeline 717 and the second heat exchanger 718, the problem that the cooling medium freezes when the ambient temperature is low is avoided. At the same time, the condensation efficiency of the steam is improved, the continuous utilization of heat energy and the recycling of steam are realized, and the efficient conversion of heat energy and the stable operation of the system are ensured.

[0073] Furthermore, in an optional embodiment, the steam generating assembly 600 includes a steam turbine, which is connected to the indirect air cooling assembly 700 through a first pipeline 713 and a second pipeline 714; and a generator, which is connected to the steam turbine.

[0074] Specifically, in this embodiment, the steam turbine is connected to the condenser 711 through a first pipeline 713 and a second pipeline 714. The high-temperature and high-pressure steam in the first pipeline 713 enters the steam turbine to drive the wheel in the steam turbine to rotate, so as to drive the generator to generate electricity or provide other mechanical power through the steam turbine. After the high-temperature and high-pressure steam drives the steam turbine to do work, the pressure of the steam will drop significantly, and it will flow into the condenser 711 through the second pipeline 714 for condensation, so that the steam is converted into condensate and then re-enters the first pipeline 713 for circulation.

[0075] When the steam is converted into a liquid state and enters the first pipeline 713, since a condensate pump 712 is provided on the first pipeline 713, power is provided for the flow of the liquid to ensure that the liquid can flow smoothly along the first pipeline 713. In addition, the setting of the condensate pump 712 not only ensures the continuity of the liquid flow, but also can accurately control the flow rate and velocity, so as to realize the stable operation of the system.

[0076] Furthermore, in an optional embodiment, the circulation assembly 400 includes a cold tank 411, which is connected to the collector 300 through a rising pipeline 415, and a heat storage member is arranged in the cold tank 411; a hot tank 412, which is connected to the collector 300 through a descending pipeline 416; a first circulation pump 413, which is arranged on the cold tank 411, and the first circulation pump 413 is used to pump the heat storage member into the rising pipeline 415; a second circulation pump 414, which is arranged on the hot tank 412, and the second circulation pump 414 is used to pump the heat storage member into the first heat exchanger 800.

[0077] Specifically, in this embodiment, the circulation component 400 includes a cold tank 411 and a hot tank 412. The cold tank 411 stores heat storage elements. The first circulation pump 413 is arranged on the cold tank 411 and can pump the heat storage elements into the rising pipeline 415, so as to exchange heat with the collector 300 located at the top of the air-cooled tower 200, and then enter the hot tank 412 through the descending pipeline 416 for storage. When heat exchange is required, the second circulation pump 414 pumps the heat storage elements in the hot tank 412 into the first heat exchanger 800, and exchanges heat with the condensate in the first pipeline 713 through the first heat exchanger 800, converting the condensate into high-temperature and high-pressure steam.

[0078] Among them, both the cold tank 411 and the hot tank 412 adopt a cylindrical design to maximize the storage space. At the same time, to ensure the stability of the heat storage elements, the cold tank 411 and the hot tank 412 are generally made of corrosion-resistant and high-temperature-resistant materials. In addition, since the heat storage elements are in a high-temperature state in the hot tank 412, the hot tank 412 also includes a heat insulation layer to reduce heat loss.

[0079] In this embodiment, the heat storage element is molten salt. Molten salt has extremely high thermal stability and chemical stability, can stably exist at high temperatures for a long time, will not decompose or chemically react with other substances. At the same time, molten salt has a high heat capacity and thermal conductivity, can quickly absorb and store a large amount of thermal energy, and can quickly transfer the thermal energy to other media to achieve efficient heat exchange.

[0080] At the same time, it should be noted that the selection of the heat storage element is not limited to molten salt, and the heat storage element can be adaptively selected according to actual needs. This embodiment does not impose any restrictions on this.

[0081] By adopting the above technical solutions, the solar thermal power generation system provided by this embodiment can efficiently utilize the thermal energy collected by the collector 300, and realize the storage and conversion of thermal energy through the circulation component 400, ensuring the stable supply of thermal energy and the reliable operation of the system.

[0082] Furthermore, in an optional embodiment, the circulation component 400 further includes a fourth pipeline 417, and both ends of the fourth pipeline 417 are respectively connected to the hot tank 412 and the cold tank 411.

[0083] Specifically, in this embodiment, the second circulation pump 414 is arranged on the fourth pipeline 417. The second circulation pump 414 is used to pump the heat storage elements in the hot tank 412 into the fourth pipeline 417 for heat exchange. The heat storage elements after cooling enter the cold tank 411 along the fourth pipeline 417, thereby realizing the circulation of the heat storage elements and ensuring the effective utilization of the heat storage elements and the continuous operation of the system.

[0084] Further, in an optional embodiment, both the first pipeline 713 and the fourth pipeline 417 penetrate through the first heat exchanger 800.

[0085] Specifically, in this embodiment, the heat storage element in the fourth pipeline 417 exchanges heat with the condensate in the first pipeline 713 through the first heat exchanger 800, converting the condensate in the first pipeline 713 into a steam state. At this time, the temperature of the heat storage element in the fourth pipeline 417 decreases, and the cooled heat storage element enters the cold tank 411 along the fourth pipeline 417, thus realizing the circulation of the heat storage element and ensuring the effective utilization of the heat storage element and the continuous operation of the system.

[0086] In an optional embodiment, the circulation assembly 400 further includes a fourth circulation pump, which is arranged on the fourth pipeline 417 and is used to provide power for the heat storage element to ensure that the cooled heat storage element can smoothly flow into the cold tank 411. In addition, the third circulation pump 419 is provided, which not only ensures the continuity of the flow of the heat storage element, but also can precisely control the flow rate and flow velocity to optimize the heat energy circulation.

[0087] Further, in an optional embodiment, the circulation assembly 400 further includes a fifth pipeline 418 and a third circulation pump 419. The fifth pipeline 418 is respectively communicated with the cold tank 411 and the hot tank 412, and the third circulation pump 419 is arranged on the fifth pipeline 418.

[0088] In this embodiment, the fifth pipeline 418 is respectively communicated with the cold tank 411 and the hot tank 412. When the heat of the heat storage element is insufficient, the fifth pipeline 418 and the third circulation pump 419 cooperate to store heat in a cycle.

[0089] Specifically, when the heat of the heat storage element in the hot tank 412 is lower than the preset value, the third circulation pump 419 is turned on to drive the heat storage element to flow from the hot tank 412 into the cold tank 411 through the fifth pipeline 418 for mixing, and then the heat storage element in the cold tank 411 enters the collector 300 through the rising pipeline 415 to accumulate heat and re-enter the hot tank 412. If the preset value is still not reached, the cycle of heat storage is repeated until the temperature of the heat storage element in the hot tank 412 reaches the preset value.

[0090] By adopting the above technical solution, this embodiment enables the circulation assembly 400 to store heat in a cycle when the temperature does not reach the preset value, realizing the effective utilization of heat.

[0091] At the same time, through the cycle of heat storage, this embodiment enables the solar thermal power generation system to flexibly adjust the heat reserve according to actual needs to adapt to different working environments and load changes, and always maintain an efficient and stable operating state.

[0092] Other embodiments of the present application will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0093] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A solar thermal power generation system, characterized in that, Comprising: A mirror field for concentrating direct solar light; An air-cooled tower disposed at the center of the mirror field; A collector disposed at the top of the air-cooled tower, the collector being configured to collect the direct solar light concentrated by the mirror field and convert it into heat energy; A circulation assembly disposed within the air-cooled tower, the circulation assembly being connected to the collector; An anti-vibration assembly disposed below the collector; A steam generation assembly; An indirect air-cooling assembly including a condensation member and a condensate pump, both the condensation member and the condensate pump being disposed outside the air-cooled tower, the condensation member being connected to the steam generation assembly through a first pipeline and a second pipeline, and the condensate pump being disposed on the first pipeline; A first heat exchanger disposed on the first pipeline and connected to the circulation assembly.

2. The solar thermal power generation system according to claim 1, wherein The indirect air-cooling assembly further includes a circulation pipeline connected end to end, and a part of the circulation pipeline is disposed through the condensation member to cool the steam within the condensation member.

3. The solar thermal power generation system according to claim 2, wherein, The indirect air-cooling assembly further includes a circulation liquid pump disposed on the circulation pipeline.

4. The solar thermal power generation system according to claim 2, wherein The first pipeline includes a liquid inlet section and a steam inlet section, two ends of the steam inlet section are respectively connected to the first heat exchanger and the steam generation assembly, and two ends of the liquid inlet section are respectively connected to the condensation member and the first heat exchanger.

5. The solar thermal power generation system according to claim 4, characterized in that, The indirect air-cooling assembly further includes a third pipeline and a second heat exchanger, two ends of the third pipeline are respectively connected to the liquid inlet section and the steam inlet section, and both the third pipeline and the circulation pipeline pass through the second heat exchanger.

6. The solar thermal power generation system according to any one of claims 1-5, characterized in that, The steam generation assembly includes: A steam turbine connected to the indirect air-cooling assembly through the first pipeline and the second pipeline; A generator connected to the steam turbine.

7. The solar thermal power generation system according to any one of claims 1-5, characterized in that The circulation assembly includes: A cold tank connected to the collector through a rising pipeline, and a heat storage member is disposed within the cold tank; A hot tank connected to the collector through a descending pipeline; A first circulation pump disposed on the cold tank, the first circulation pump being configured to pump the heat storage member into the rising pipeline; A second circulation pump disposed on the hot tank, the second circulation pump being configured to pump the heat storage member into the first heat exchanger.

8. The solar thermal power generation system according to claim 7, wherein The circulation assembly further includes a fourth pipeline, two ends of the fourth pipeline are respectively connected to the hot tank and the cold tank.

9. The solar thermal power generation system according to claim 8, wherein Both the first pipeline and the fourth pipeline pass through the first heat exchanger.

10. The solar thermal power generation system according to claim 7, characterized in that, The circulation assembly further includes a fifth pipeline and a third circulation pump, the fifth pipeline is respectively communicated with the cold tank and the hot tank, and the third circulation pump is disposed on the fifth pipeline.

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