A tower-type solar thermal utilization system

Abstract

A tower solar thermal utilization system includes a heat-using system and at least two tower solar thermal collection systems; at least one of the tower solar thermal collection systems is a characteristic tower solar thermal collection system. The characteristic tower solar thermal collection system also includes a first high-temperature heat storage unit and a first high-temperature heat storage medium delivery pump module. The high-temperature heat storage medium output from the heat absorption module is delivered to the first high-temperature heat storage unit, and the high-temperature heat storage medium output from the first high-temperature heat storage medium delivery pump module is delivered to the heat-using system. The first high-temperature heat storage unit in each characteristic tower solar thermal collection system can store a portion of the high-temperature heat storage medium. When the heat absorption module in each characteristic tower solar thermal collection system is shut down at night or on rainy days, the high-temperature heat storage medium in the first high-temperature heat storage unit in each characteristic tower solar thermal collection system can still maintain the operation of the heat-using system, thereby improving the utilization of solar energy.

Description

Technical Field

[0001] The present invention relates to the technical field of solar thermal utilization, and in particular to a tower-type solar thermal utilization system. Background Art

[0002] As a clean, renewable energy source, solar energy is increasingly being used in production and daily life. Tower solar thermal utilization technology is an emerging solar energy utilization technology. It utilizes solar energy by converting low-temperature heat storage media into high-temperature heat storage media through a tower solar thermal collection system (each solar thermal collection system includes a heliostat field and a corresponding heat absorber mounted on a tower). The high-temperature heat storage media is then transported to a heat-using system for heat release, thereby realizing the utilization of solar energy.

[0003] An analysis of the economics of tower solar thermal systems of varying sizes suggests that significantly reducing costs can be achieved by expanding the installed capacity of these systems. However, as the installed capacity increases, the heliostat field area and the size of the receiver must also increase when using a single tower solar collector system. This results in a decreasing efficiency of the tower solar collector system. Furthermore, the increased size of the receiver significantly increases manufacturing complexity, further limiting the scale of a single tower solar collector system.

[0004] Based on the above reasons, people have proposed a multi-tower one-machine solution, that is, multiple tower solar thermal collection systems jointly provide thermal energy for a set of heat-using systems. However, how to realize the energy transfer between each tower solar thermal collection system and the heat-using system in a low-cost manner is an urgent problem that needs to be solved. Summary of the Invention

[0005] In response to the technical problems existing in the background technology, the present invention provides a tower solar thermal utilization system, which can effectively reduce the requirements for the heat storage medium transportation pipeline between the tower solar thermal collection system and the heat use system, thereby effectively reducing costs.

[0006] A tower solar thermal utilization system comprises a heat-using system and at least two tower solar thermal collection systems; each of the tower solar thermal collection systems comprises a heliostat field module and a heat absorption module arranged on a heat absorption tower, the heliostat field module is used to track the sun and reflect sunlight to the heat absorption module, the heat absorption module is used to use the sunlight reflected by the heliostat field module to heat the low-temperature heat storage medium in the heat absorption module to convert the low-temperature heat storage medium in the heat absorption module into a high-temperature heat storage medium, and the high-temperature heat storage medium in the heat absorption module is output to the high-temperature heat storage medium input end of the heat-using system; among all the tower solar thermal collection systems, at least one tower solar thermal collection system is a characteristic tower solar thermal collection system; each of the characteristic tower solar thermal collection systems further comprises a first heat storage module, wherein the first heat storage module It includes a first high-temperature heat storage unit for storing high-temperature heat storage medium and a first high-temperature heat storage medium delivery pump module for pumping out the high-temperature heat storage medium in the first high-temperature heat storage unit; in each of the characteristic tower solar thermal collection systems, it also includes a first pipeline and a second pipeline; in each of the characteristic tower solar thermal collection systems, the high-temperature heat storage medium output from the heat absorption module is transported to the first high-temperature heat storage unit through the first pipeline, and the high-temperature heat storage medium in the first high-temperature heat storage unit is transported to the heat-using system through the second pipeline under the drive of the first high-temperature heat storage medium delivery pump module; in each of the characteristic tower solar thermal collection systems, when the flow rates of the high-temperature heat storage media in the first pipeline and the second pipeline are the same, the maximum flow rate that the first pipeline can allow is greater than the maximum flow rate that the second pipeline can allow.

[0007] As an improvement of the tower-type solar thermal utilization system described in the present invention, each of the characteristic tower-type solar thermal collection systems also includes a third pipeline; in each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium output end of the heat absorption module is also connected to the second pipeline through the third pipeline.

[0008] As an improvement of the tower-type solar thermal utilization system described in the present invention, each of the characteristic tower-type solar thermal collection systems further includes a fifth pipeline; in each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium input end of the fifth pipeline is connected to the high-temperature heat storage medium output end of the heat absorption module, and the high-temperature heat storage medium output end of the fifth pipeline is respectively connected to the high-temperature heat storage medium input end of the first pipeline and the high-temperature heat storage medium input end of the third pipeline.

[0009] As an improvement to a tower-type solar thermal utilization system described in the present invention, in each of the characteristic tower-type solar thermal collection systems, the distance between the high-temperature heat storage medium output end of the heat absorption module and the high-temperature heat storage medium input end of the first high-temperature heat storage unit is a ninth distance, the distance between the high-temperature heat storage medium output end of the first high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat-using system is a tenth distance, and the distance between the high-temperature heat storage medium output end of the heat absorption module and the high-temperature heat storage medium input end of the heat-using system is an eleventh distance, and the ninth distance is simultaneously smaller than each of the tenth distance and the eleventh distance.

[0010] As an improvement to the tower-type solar thermal utilization system described in the present invention, in each of the characteristic tower-type solar thermal collection systems, the nominal diameter of the first pipeline is greater than the nominal diameter of the second pipeline.

[0011] As an improvement of the tower-type solar thermal utilization system described in the present invention, it also includes a centralized high-temperature heat storage unit and a centralized high-temperature heat storage medium delivery pump module; the centralized high-temperature heat storage unit is used to store high-temperature heat storage medium, and the centralized high-temperature heat storage medium delivery pump module is used to pump the high-temperature heat storage medium in the centralized high-temperature heat storage unit to the high-temperature heat storage medium input end of the heat-using system; in each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium output end of the second pipeline is connected to the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit; or, in each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium output end of the second pipeline is connected to the high-temperature heat storage medium input end of the heat-using system through a sixth pipeline, and the high-temperature heat storage medium output end of the second pipeline is also connected to the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit through a fourth pipeline.

[0012] As an improvement to a tower-type solar thermal utilization system described in the present invention, when the flow rate of the high-temperature heat storage medium in the connecting pipeline between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat-using system and the second pipeline in each of the characteristic tower-type solar thermal collection systems are the same, the maximum flow rate that can be allowed by the connecting pipeline between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat-using system is greater than the maximum flow rate that can be allowed by the second pipeline in any one of the characteristic tower-type solar thermal collection systems.

[0013] As an improvement to the tower-type solar thermal utilization system described in the present invention, the distance between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat-using system is a twelfth distance; in each of the characteristic tower-type solar thermal collection systems, the distance between the high-temperature heat storage medium output end of the first high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat-using system is a thirteenth distance, the distance between the high-temperature heat storage medium output end of the first high-temperature heat storage unit and the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit is a fourteenth distance, the distance between the high-temperature heat storage medium output end of the heat absorption module and the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit is a fifteenth distance, and the distance between the high-temperature heat storage medium output end of the heat absorption module and the high-temperature heat storage medium input end of the heat-using system is a sixteenth distance; and the twelfth distance is simultaneously smaller than each of the thirteenth distance, the fourteenth distance, the fifteenth distance, and the sixteenth distance in any one of the characteristic tower-type solar thermal collection systems.

[0014] As an improvement of a tower-type solar thermal utilization system described in the present invention, in each of the characteristic tower-type solar thermal collection systems, the first heat storage module also includes a first low-temperature heat storage unit for storing low-temperature heat storage medium and a first low-temperature heat storage medium delivery pump module for delivering the low-temperature heat storage medium in the first low-temperature heat storage unit to the low-temperature heat storage medium input end of the heat absorption module; each of the characteristic tower-type solar thermal collection systems also includes a tenth pipeline; in each of the characteristic tower-type solar thermal collection systems, the low-temperature heat storage medium in the first low-temperature heat storage unit is driven by the first low-temperature heat storage medium delivery pump module and delivered to the low-temperature heat storage medium input end of the heat absorption module through the tenth pipeline; each of the characteristic tower-type solar thermal collection systems also includes a seventh pipeline; in each of the characteristic tower-type solar thermal collection systems, the first low-temperature heat storage unit receives the low-temperature heat storage medium output from the low-temperature heat storage medium output end of the heat utilization system through the seventh pipeline.

[0015] As an improvement of the tower-type solar thermal utilization system described in the present invention, it also includes a centralized low-temperature heat storage unit and a centralized low-temperature heat storage medium delivery pump module for pumping the low-temperature heat storage medium in the centralized low-temperature heat storage unit to each of the first low-temperature heat storage units; the low-temperature heat storage medium output end of the heat-using system is connected to the low-temperature heat storage medium input end of the centralized low-temperature heat storage unit through an eighth pipeline; in each of the characteristic tower-type solar thermal collection systems, the low-temperature heat storage medium input end of the first low-temperature heat storage unit is connected to the low-temperature heat storage medium output end of the heat-using system and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit through the seventh pipeline respectively; or, in each of the characteristic tower-type solar thermal collection systems, the low-temperature heat storage medium input end of the first low-temperature heat storage unit is connected to the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit through the seventh pipeline; in each of the characteristic tower-type solar thermal collection systems, when the flow rates of the low-temperature heat storage medium in the seventh pipeline and the tenth pipeline are the same, the maximum flow rate that the tenth pipeline can allow is greater than the maximum flow rate that the seventh pipeline can allow.

[0016] As an improvement of the tower-type solar thermal utilization system described in the present invention, in each of the characteristic tower-type solar thermal collection systems, the nominal diameter of the tenth pipeline is greater than the nominal diameter of the seventh pipeline.

[0017] As an improvement to a tower-type solar thermal utilization system described in the present invention, when the flow rate of the low-temperature heat storage medium in the eighth pipeline and the seventh pipeline in each of the characteristic tower-type solar thermal collection systems is the same, the maximum flow rate that the eighth pipeline can allow is greater than the maximum flow rate that the seventh pipeline in any one of the characteristic tower-type solar thermal collection systems can allow.

[0018] As an improvement to a tower-type solar thermal utilization system described in the present invention, in each of the characteristic tower-type solar thermal collection systems, the distance between the low-temperature heat storage medium output end of the first low-temperature heat storage unit and the low-temperature heat storage medium input end of the heat absorption module is a first distance, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit and the low-temperature heat storage medium output end of the heat-using system is a second distance, and the distance between the low-temperature heat storage medium input end of the heat absorption module and the low-temperature heat storage medium output end of the heat-using system is a third distance, and the first distance is simultaneously smaller than each of the second distance and the third distance.

[0019] As an improvement to the tower-type solar thermal utilization system described in the present invention, the distance between the low-temperature heat storage medium input end of the centralized low-temperature heat storage unit and the low-temperature heat storage medium output end of the heat-using system is a fourth distance; in each of the characteristic tower-type solar thermal collection systems, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit and the low-temperature heat storage medium output end of the heat-using system is a fifth distance, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit is a sixth distance, the distance between the low-temperature heat storage medium input end of the heat absorption module and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit is a seventh distance, and the distance between the low-temperature heat storage medium input end of the heat absorption module and the low-temperature heat storage medium output end of the heat-using system is an eighth distance; and the fourth distance is simultaneously smaller than each of the fifth distance, the sixth distance, the seventh distance, and the eighth distance in any one of the characteristic tower-type solar thermal collection systems.

[0020] As an improvement of the tower-type solar thermal utilization system described in the present invention, each of the characteristic tower-type solar thermal collection systems further includes a ninth pipeline; in each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium output end of the heat absorption module is also connected to the low-temperature heat storage medium input end of the first low-temperature heat storage unit through a ninth pipeline.

[0021] As an improvement to the tower-type solar thermal utilization system described in the present invention, in each of the characteristic tower-type solar thermal collection systems, a first valve is provided on the first pipeline, a second valve is provided on the second pipeline, and a third valve is provided on the third pipeline; in each of the characteristic tower-type solar thermal collection systems, the connection point between the third pipeline and the second pipeline is a first connection point, the third valve is provided between the first connection point and the high-temperature heat storage medium input end of the third pipeline, and the second valve is provided between the first connection point and the high-temperature heat storage medium output end of the first high-temperature heat storage medium delivery pump module.

[0022] As an improvement of the tower-type solar thermal utilization system described in the present invention, in each of the characteristic tower-type solar thermal collection systems, a fourth valve is provided on the fourth pipeline, and a sixth valve is provided on the sixth pipeline.

[0023] As an improvement of the tower-type solar thermal utilization system described in the present invention, the heat utilization system includes a heat exchange system and a steam turbine generator set. The heat exchange system is used to transfer heat in the high-temperature heat storage medium to the water working medium, thereby generating high-temperature and high-pressure steam to drive the operation of the steam turbine generator set.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In a tower solar thermal utilization system without a heat storage module, the high-temperature heat storage medium output from each heat absorption module needs to be immediately transported to the heat-using system. If the heat absorption power of the heat absorption module is increased, the transportation capacity of the high-temperature heat storage medium transmission pipeline between the heat absorption module and the heat-using system and the heat-using power of the heat-using system must be increased simultaneously. Otherwise, the entire tower solar thermal utilization system will not be able to operate normally. The present invention provides a first high-temperature heat storage unit and a first high-temperature heat storage medium delivery pump module in each characteristic tower solar thermal collection system. When the heat absorption power of the heat absorption module is increased, the high-temperature heat storage medium output from the heat absorption module and unable to be immediately delivered to the heat-using system can be stored locally in the corresponding first high-temperature heat storage unit. When the heat absorption module is shut down, such as at night or on rainy days, the first high-temperature heat storage medium delivery pump module is used to deliver the high-temperature heat storage medium in the first high-temperature heat storage unit to the heat-using system. Therefore, there is no need to increase the delivery capacity of the high-temperature heat storage medium delivery pipeline used to deliver the high-temperature heat storage medium to the heat-using system, nor is there a need to increase the heating power of the heat-using system, thereby improving the utilization of solar energy and reducing costs.

[0026] 2. The present invention provides a third pipeline in each characteristic tower solar thermal collection system, so that in each characteristic tower solar thermal collection system, part of the high-temperature heat storage medium output from the heat absorption module can be transported to the heat-using system without passing through the first high-temperature heat storage unit. Since the heat absorption module is arranged on the towering heat absorption tower, the high-temperature heat storage medium in the heat absorption module can convert the gravitational potential energy of the high-temperature heat storage medium into kinetic energy during the process of being transported to the heat-using system through the third pipeline, thereby reducing the energy required to drive the flow of the high-temperature heat storage medium in the entire tower solar thermal utilization system.

[0027] 3. In actual tower solar thermal utilization systems, the heat-using system and the heat-absorbing modules in each characteristic tower solar thermal collection system do not always operate synchronously. For example, at night or during rainy weather, the heat-absorbing modules in each characteristic tower solar thermal collection system are shut down while the heat-using system is in operation. Alternatively, the heat-using system is shut down due to grid peak regulation or actual operating needs, while the heat-absorbing modules in each characteristic tower solar thermal collection system are in operation. The present invention fully utilizes this characteristic that the heat-using system and the heat-absorbing modules in each characteristic tower solar thermal collection system do not always operate synchronously. It proposes a technical solution in which, on the basis of providing a first high-temperature heat storage unit and a first high-temperature heat storage medium delivery pump module in each characteristic tower solar thermal collection system, a centralized high-temperature heat storage unit and a centralized high-temperature heat storage medium delivery pump module are further provided. By adopting this technical solution, when the heat-using system is in a shutdown or low-load operation state, the high-temperature heat storage medium from each characteristic tower solar thermal collection system can be stored in whole or in part in the centralized high-temperature heat storage unit; when the heat-using system is in a high-load operation state, even if the second pipeline in each characteristic tower solar thermal collection system provides insufficient high-temperature heat storage medium to the heat-using system or does not provide high-temperature heat storage medium to the heat-using system, the centralized high-temperature heat storage unit can use its stored high-temperature heat storage medium to supplement the high-temperature heat storage medium required by the heat-using system, thereby meeting the actual needs of the heat-using system and enabling the heat-using system to operate according to the preset requirements; similarly, in the heat absorption module in each characteristic tower solar thermal collection system When the system is in a high-load operation state and the transport capacity of the second pipeline in each characteristic tower-type solar thermal collection system cannot timely transport the high-temperature heat storage medium output from the corresponding heat absorption module, the excess high-temperature heat storage medium output from the corresponding heat absorption module can be stored in the corresponding first high-temperature heat storage unit, thereby not affecting the operation of each heat absorption module; when the heat absorption module in each characteristic tower-type solar thermal collection system is in a shutdown or low-load operation state, since the second pipeline in each characteristic tower-type solar thermal collection system is in an idle state or has excess transport capacity, the high-temperature heat storage medium stored in each first high-temperature heat storage unit can be transported to the heat-using system or the centralized high-temperature heat storage unit through the corresponding second pipeline. Based on the above description, it can be seen that by adopting the technical solution of the present invention, the heat system and the heat absorption modules in each characteristic tower solar thermal collection system can be used to operate normally according to the preset operating mode, so that the high-temperature heat storage medium output from each characteristic tower solar thermal collection system can be transported to the heat-using system or the centralized high-temperature heat storage unit by the corresponding second pipeline in a time-sharing manner. Therefore, the requirements for the maximum flow rate allowed by the second pipeline in each characteristic tower solar thermal collection system can be reduced, and the cost of the second pipeline in each characteristic tower solar thermal collection system can be reduced.

[0028] 4. By providing a first low-temperature heat storage unit and a first low-temperature heat storage medium delivery pump module in each characteristic tower solar thermal collection system, the present invention can promptly receive and store the low-temperature heat storage medium output by the heat-using system. The low-temperature heat storage medium is then delivered to the corresponding heat absorption module via each first low-temperature heat storage medium delivery pump module. With this design, the low-temperature heat storage medium at the output end of the low-temperature heat storage medium of the self-using heat system does not directly enter the heat absorption modules, but first enters each first low-temperature heat storage unit and then enters the heat absorption module corresponding to each first low-temperature heat storage unit. This allows the low-temperature heat storage medium output by the self-using heat system to be delivered in stages, thereby reducing the driving capacity requirements of the driving device used to drive the flow of the low-temperature heat storage medium in each seventh pipeline, thereby reducing costs.

[0029] 5. In actual tower solar thermal utilization systems, the heat-using system and the heat-absorbing modules in each characteristic tower solar thermal collection system do not always operate synchronously. For example, at night or during rainy weather, the heat-absorbing modules in each characteristic tower solar thermal collection system are shut down while the heat-using system is in operation. Alternatively, the heat-using system is shut down due to grid peak regulation or actual operating needs, while the heat-absorbing modules in each characteristic tower solar thermal collection system are in operation. The present invention fully utilizes this characteristic that the heat-using system and the heat-absorbing modules in each characteristic tower solar thermal collection system do not always operate synchronously. It proposes a technical solution in which, in addition to providing a first low-temperature heat storage unit and a first low-temperature heat storage medium delivery pump module in each characteristic tower solar thermal collection system, a centralized low-temperature heat storage unit and a centralized low-temperature heat storage medium delivery pump module are further provided. By adopting this technical solution, when the heat-using system is in a high-load operation state, when the transportation capacity of the seventh pipeline in each characteristic tower solar thermal collection system cannot timely transport the low-temperature heat storage medium output from the heat-using system, the excess low-temperature heat storage medium output from the heat-using system can be stored in the centralized low-temperature heat storage unit, thereby not affecting the operation of the heat-using system; when the heat-using system is in a shutdown or low-load operation state, since the seventh pipeline in each characteristic tower solar thermal collection system is in an idle state or has excess transportation capacity at this time, the low-temperature heat storage medium stored in the centralized low-temperature heat storage unit can be transported to the corresponding heat absorption modules or the first low-temperature heat storage unit through the corresponding seventh pipelines; similarly, in each characteristic tower solar thermal collection system When the heat absorption modules in the characteristic tower solar thermal collection systems are in a high-load operation state, even if the seventh pipeline in each characteristic tower solar thermal collection system does not provide enough low-temperature heat storage medium to the corresponding heat absorption modules or does not provide low-temperature heat storage medium to the heat absorption modules, the first low-temperature heat storage unit in each characteristic tower solar thermal collection system can use the low-temperature heat storage medium stored therein to supplement the low-temperature heat storage medium required by the corresponding heat absorption module, thereby meeting the actual needs of the corresponding heat absorption module, so that each heat absorption module can operate according to preset requirements; when the heat absorption modules in each characteristic tower solar thermal collection system are in a shutdown or low-load operation state, the low-temperature heat storage medium from the heat user system or the centralized low-temperature heat storage unit can enter the corresponding first low-temperature heat storage unit through the corresponding seventh pipeline in whole or in part for storage. Based on the above description, it can be seen that the technical solution of the present invention can enable the low-temperature heat storage medium output from the self-use heat system to be transported to the corresponding tower solar thermal collection systems by the corresponding seventh pipelines in a time-sharing manner. Therefore, when the heat absorption modules in the heat system and each characteristic tower solar thermal collection system operate normally according to the preset operating mode, the requirements for the maximum flow rate that can be allowed by the seventh pipeline in each characteristic tower solar thermal collection system can be reduced, thereby reducing the cost of the seventh pipeline in each characteristic tower solar thermal collection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of a tower-type solar thermal utilization system in Example 1 of the present invention.

[0031] Figure 2 This is a schematic diagram of a tower-type solar thermal utilization system in Example 2 of the present invention.

[0032] Figure 3 This is a schematic diagram of a tower-type solar thermal utilization system in Example 3 of the present invention.

[0033] Figure 4 This is a schematic diagram of a tower-type solar thermal utilization system in Example 4 of the present invention.

[0034] Figure 5 This is a schematic diagram of a tower-type solar thermal utilization system in Example 5 of the present invention.

[0035] Figure 6 This is a schematic diagram of a tower-type solar thermal utilization system in Example 6 of the present invention.

[0036] 1-Heliostat, 2-Heat absorption tower, 3-Heat absorption module, 4-First low-temperature heat storage unit, 5-First low-temperature heat storage medium delivery pump module, 6-First high-temperature heat storage unit, 7-First high-temperature heat storage medium delivery pump module, 8-Centralized high-temperature heat storage unit, 9-Centralized high-temperature heat storage medium delivery pump module, 10-Heat exchange system, 11-Steam turbine generator set, 12-Centralized low-temperature heat storage unit, 13-Centralized low-temperature heat storage medium delivery pump module, 101-Ninth valve, 102-First valve , 103-third valve, 104-second valve, 105-fourth valve, 106-sixth valve, 108-eighth valve, 109-seventh valve, 110-twelfth valve, 201-heliostat field module, 21-fifth pipeline, 22-tenth pipeline, 23-ninth pipeline, 24-first pipeline, 25-second pipeline, 26-seventh pipeline, 27-third pipeline, 28-fourth pipeline, 29-sixth pipeline, 30-eighth pipeline, 32-twelfth pipeline. DETAILED DESCRIPTION

[0037] The following examples will help those skilled in the art further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that those skilled in the art may make several changes and modifications without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0038] Certain directional terms used in the following description of the drawings, such as "inner," "outer," "upper," "lower," "top," "bottom," and other directional terms, will be understood to have their normal meanings and refer to those directions associated with normal viewing of the drawings. Unless otherwise indicated, the directional terms described in this specification are generally in accordance with conventional directions understood by those skilled in the art.

[0039] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] Example 1

[0041] like Figure 1As shown, a tower solar thermal utilization system includes a heat-using system and at least two tower solar thermal collection systems. Each tower solar thermal collection system includes a heliostat field module 201 containing several heliostats 1 and a heat absorption module 3 mounted on a heat absorption tower 2. In each tower solar thermal collection system, the heliostat field module 201 tracks the sun and reflects sunlight to the heat absorption module 3. The heat absorption module 3 uses the sunlight reflected by the heliostat field module 201 to heat the low-temperature heat storage medium in the heat absorption module 3, converting the low-temperature heat storage medium in the heat absorption module 3 into high-temperature heat storage medium. The high-temperature heat storage medium in the heat absorption module 3 is then output to the high-temperature heat storage medium input port of the heat-using system. It should be noted that the heliostat modules 201 and the heat absorption modules 3 mentioned herein belong to the same tower solar thermal collection system. Among all tower solar thermal collection systems, at least one tower solar thermal collection system is a characteristic tower solar thermal collection system. Each characteristic tower solar thermal collection system also includes a first heat storage module, which includes a first high-temperature heat storage unit 6 for storing a high-temperature heat storage medium and a first high-temperature heat storage medium delivery pump module 7 for pumping the high-temperature heat storage medium out of the first high-temperature heat storage unit 6. Each characteristic tower solar thermal collection system also includes a first pipeline 24 and a second pipeline 25. In each characteristic tower solar thermal collection system, the high-temperature heat storage medium output from the heat absorption module 3 is delivered to the first high-temperature heat storage unit 6 via the first pipeline 24. Driven by the first high-temperature heat storage medium delivery pump module 7, the high-temperature heat storage medium in the first high-temperature heat storage unit 6 is delivered to the heat-using system via the second pipeline 25. It should be noted that the heat absorption module 3, first pipeline 24, first high-temperature heat storage unit 6, first high-temperature heat storage medium delivery pump module 7, and second pipeline 25 mentioned herein belong to the same characteristic tower solar thermal collection system. In each characteristic tower solar thermal collection system, when the flow rates of the high-temperature heat storage medium in the first pipeline 24 and the second pipeline 25 are the same, the maximum flow rate that the first pipeline 24 can allow is greater than the maximum flow rate that the second pipeline 25 can allow.

[0042] Specifically, if Figure 1As shown, in this embodiment, two tower solar thermal collection systems are provided, and both solar thermal collection systems are characteristic tower solar thermal collection systems; in this embodiment, in each characteristic tower solar thermal collection system, a first high-temperature heat storage medium delivery pump module 7 is provided on the first high-temperature heat storage unit 6; the heat utilization system includes a heat exchange system 10 and a steam turbine generator set 11, and the heat exchange system 10 is used to transfer the heat from the high-temperature heat storage medium in each tower solar thermal collection system to the water working medium, thereby generating high-temperature and high-pressure steam to drive the steam turbine generator set 11 to operate. Of course, in other embodiments, the heat utilization system may also be other equipment or systems that can utilize the heat in the high-temperature heat storage medium, and the present invention does not limit this; wherein the heat storage medium in this embodiment is molten salt. Of course, in other embodiments, the heat storage medium may also be liquid metal or other materials that can match the tower solar thermal utilization system. using a medium suitable for a specific application environment of the system; in addition, in the present embodiment, the first high temperature heat storage unit 6 is a separate storage tank. Of course, in other embodiments, the first high temperature heat storage unit 6 may also be a local space in a storage tank. For example, a storage tank may include a high temperature heat storage medium storage space and a low temperature heat storage medium storage space that are separated from each other, wherein the storage space for the high temperature heat storage medium is the first high temperature heat storage unit 6 mentioned herein; the first high temperature heat storage medium delivery pump module 7 may be a separate first high temperature heat storage medium delivery pump, or a pump group comprising two or more first high temperature heat storage medium delivery pumps. When the first high temperature heat storage medium delivery pump module 7 comprises two or more first high temperature heat storage medium delivery pumps, each first high temperature heat storage medium delivery pump may serve as a backup for each other, or may work simultaneously to achieve the functions required by the first high temperature heat storage medium delivery pump module 7.

[0043] In a tower-type solar thermal utilization system without a heat storage module, the high-temperature heat storage medium output from each heat absorption module 3 needs to be immediately transported to the heat-using system. If the heat absorption power of the heat absorption module 3 is increased, the transportation capacity of the high-temperature heat storage medium transportation pipeline between the heat absorption module 3 and the heat-using system and the heat-using power of the heat-using system must be simultaneously increased, otherwise the entire tower-type solar thermal utilization system will not be able to operate normally. The present invention provides a first high-temperature heat storage unit 6 and a first high-temperature heat storage medium delivery pump module 7 in each characteristic tower solar thermal collection system. When the heat absorption power of the heat absorption module 3 is increased, the high-temperature heat storage medium output from the heat absorption module 3 and cannot be immediately delivered to the heat-using system can be stored on-site in the corresponding first high-temperature heat storage unit 6. When the heat absorption module 3 is shut down at night or on rainy days, the first high-temperature heat storage medium delivery pump module 7 is used to deliver the high-temperature heat storage medium in the first high-temperature heat storage unit 6 to the heat-using system. Therefore, there is no need to increase the delivery capacity of the high-temperature heat storage medium delivery pipeline (i.e., the second pipeline 25) used to deliver the high-temperature heat storage medium to the heat-using system, nor is there a need to increase the heat consumption power of the heat-using system to improve the utilization of solar energy, thereby reducing costs.

[0044] Furthermore, in this embodiment, Figure 1 As shown, each characteristic tower solar thermal collection system also includes a third pipeline; in each characteristic tower solar thermal collection system, the high-temperature heat storage medium output end of the heat absorption module 3 is connected to the second pipeline 25 through the third pipeline 27.

[0045] By setting a third pipeline 27 in each characteristic tower solar thermal collection system, in each characteristic tower solar thermal collection system, part of the high-temperature heat storage medium output from the heat absorption module 3 can be transported to the heat-using system without passing through the first high-temperature heat storage unit 6 in the characteristic tower solar thermal collection system in which it is located. Since the heat absorption module 3 is set on the towering heat absorption tower 2, the high-temperature heat storage medium in the heat absorption module 3 can convert the gravitational potential energy of the high-temperature heat storage medium into kinetic energy in the process of being transported to the heat-using system through the third pipeline 27 and the second pipeline 25 in sequence, thereby achieving full utilization of energy, thereby reducing the energy required to drive the flow of the high-temperature heat storage medium in the entire tower solar thermal utilization system.

[0046] Furthermore, in this embodiment, Figure 1 As shown, each characteristic tower solar thermal collection system further includes a fifth pipeline 21; in each characteristic tower solar thermal collection system, the high-temperature heat storage medium input end of the fifth pipeline 21 is connected to the high-temperature heat storage medium output end of the heat absorption module 3, and the high-temperature heat storage medium output end of the fifth pipeline 21 is respectively connected to the high-temperature heat storage medium input end of the first pipeline 24 and the high-temperature heat storage medium input end of the third pipeline 27.

[0047] By setting the fifth pipeline 21 in each characteristic tower solar thermal collection system, in essence, part of the pipeline sections of the first pipeline 24 and the third pipeline 27 in each characteristic tower solar thermal collection system are shared, thereby reducing costs. At the same time, since the heat absorption module 3 is set on the towering heat absorption tower 2, laying the pipeline on the heat absorption tower 2 requires high-altitude work, and the space of the heat absorption tower 2 is limited, and the laying of the pipeline is difficult. By setting the fifth pipeline 21, the difficulty of laying the pipeline can also be reduced.

[0048] Furthermore, in this embodiment, Figure 1 As shown, in each characteristic tower solar thermal collection system, the distance between the high-temperature heat storage medium output end of the heat absorption module 3 and the high-temperature heat storage medium input end of the first high-temperature heat storage unit 6 is the ninth distance, the distance between the high-temperature heat storage medium output end of the first high-temperature heat storage unit 6 and the high-temperature heat storage medium input end of the heat-using system is the tenth distance, and the distance between the high-temperature heat storage medium output end of the heat absorption module 3 and the high-temperature heat storage medium input end of the heat-using system is the eleventh distance, and the ninth distance is simultaneously smaller than each of the tenth distance and the eleventh distance. It should be noted that the comparison here is between the ninth distance, the tenth distance, and the eleventh distance in the same characteristic tower solar thermal collection system. By adopting this solution, in each characteristic tower solar thermal collection system, the first high-temperature heat storage unit 6 can be set near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located, and at the same time, the heat-using system is kept away from the heat absorption module 3 and the first high-temperature heat storage unit 6 in each characteristic tower solar thermal collection system, thereby shortening the length of the connecting pipeline (i.e., the first pipeline) between the high-temperature heat storage medium output end of the heat absorption module 3 and the high-temperature heat storage medium input end of the first high-temperature heat storage unit 6, and extending the length of the second pipeline 25. Since the maximum flow rate that the first pipeline 24 can allow is greater than the maximum flow rate that the second pipeline 25 can allow, the unit length cost of the first pipeline is higher than the unit length cost of the second pipeline. Therefore, by adopting this solution, the overall cost of the tower solar thermal utilization system can be effectively reduced.

[0049] Furthermore, in this embodiment, in each characteristic tower solar thermal collection system, the nominal diameter of the first pipeline 24 is greater than the nominal diameter of the second pipeline 25 .

[0050] Furthermore, in this embodiment, Figure 1As shown, in each characteristic tower solar thermal collection system, a first valve 102 is provided on the first pipeline 24, a second valve 104 is provided on the second pipeline 25, and a third valve 103 is provided on the third pipeline 27. In each characteristic tower solar thermal collection system, the connection point between the third pipeline 27 and the second pipeline 25 is the first connection point, the third valve 103 is provided between the first connection point and the high-temperature heat storage medium input end of the third pipeline 27, and the second valve 104 is provided between the first connection point and the high-temperature heat storage medium output end of the first high-temperature heat storage medium delivery pump module 7. It should be noted that the first pipeline 24, first valve 102, second pipeline 25, second valve 104, third pipeline 27, and three valves 103 mentioned in this description belong to the same characteristic tower solar thermal collection system.

[0051] By controlling the first valve 102, the first pipeline 24 can be shut off, connected, and flow rate regulated. By controlling the second valve 104, the pipeline section between the first connection point in the second pipeline 25 and the high-temperature heat storage medium output end of the first high-temperature heat storage medium delivery pump module 7 can be shut off, connected, and flow rate regulated. By controlling the third valve 103, the third pipeline 27 can be shut off, connected, and flow rate regulated.

[0052] Example 2

[0053] like Figure 2 As shown, this embodiment provides a tower-type solar thermal utilization system based on Example 1. This embodiment adds a centralized high-temperature heat storage unit 8 and a centralized high-temperature heat storage medium delivery pump module 9 to Example 1. The centralized high-temperature heat storage unit 8 is used to store high-temperature heat storage medium, and the centralized high-temperature heat storage medium delivery pump module 9 is used to pump the high-temperature heat storage medium in the centralized high-temperature heat storage unit 8 to the high-temperature heat storage medium input port of the heat-using system. In this embodiment, the centralized high-temperature heat storage medium delivery pump module 9 is installed on the centralized high-temperature heat storage unit 8.

[0054] In each characteristic tower-type solar thermal collection system, the high-temperature heat storage medium output end of the second pipeline 25 is connected to the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit 8; or, in each characteristic tower-type solar thermal collection system, the high-temperature heat storage medium output end of the second pipeline 25 is connected to the high-temperature heat storage medium input end of the heat-using system through the sixth pipeline 29, and the high-temperature heat storage medium output end of the second pipeline 25 is also connected to the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit 8 through the fourth pipeline 28.

[0055] Specifically, in this embodiment, the centralized high-temperature heat storage unit 8 is a separate storage tank. Of course, in other embodiments, the centralized high-temperature heat storage unit 8 can also be a local space in a storage tank. For example, a storage tank includes a high-temperature heat storage medium storage space and a low-temperature heat storage medium storage space that are separated from each other, wherein the storage space for the high-temperature heat storage medium is the centralized high-temperature heat storage unit 8 referred to herein. It should be noted that the centralized high-temperature heat storage medium delivery pump module 9 can be a separate centralized high-temperature heat storage medium delivery pump, or it can be a pump group including two or more centralized high-temperature heat storage medium delivery pumps; when the centralized high-temperature heat storage medium delivery pump module 9 includes two or more centralized high-temperature heat storage medium delivery pumps, each centralized high-temperature heat storage medium delivery pump can serve as a backup for each other, or can work simultaneously to achieve the functions required by the centralized high-temperature heat storage medium delivery pump module. In addition, it should be noted that in each characteristic tower solar thermal collection system, whether the high-temperature heat storage medium transported through the second pipeline 25 is directly transported to the heat-using system; or first enters the centralized high-temperature heat storage unit 8 and then is transported to the heat-using system; or is directly transported to the heat-using system through the sixth pipeline 29, the ultimate goal is to transport the high-temperature heat storage medium output by the heat absorption module 3 in the characteristic tower solar thermal collection system to the heat-using system. Therefore, the above methods and their combinations all belong to the implementation methods of outputting the high-temperature heat storage medium in the heat absorption module 3 to the high-temperature heat storage medium input end of the heat-using system.

[0056] In an actual tower solar thermal utilization system, the heat-using system and the heat-absorbing modules 3 in each characteristic tower solar thermal collection system do not always operate synchronously. For example, at night or during rainy weather, the heat-absorbing modules 3 in each characteristic tower solar thermal collection system are shut down while the heat-using system is in operation. Alternatively, the heat-using system is shut down due to grid peak regulation or actual operating needs, while the heat-absorbing modules 3 in each characteristic tower solar thermal collection system are in operation. This embodiment fully utilizes the characteristic that the heat-using system and the heat-absorbing modules 3 in each characteristic tower solar thermal collection system do not always operate synchronously. It proposes a technical solution in which, on the basis of providing a first high-temperature heat storage unit 6 and a first high-temperature heat storage medium delivery pump module 7 in each characteristic tower solar thermal collection system, a centralized high-temperature heat storage unit 8 and a centralized high-temperature heat storage medium delivery pump module 9 are further provided. By adopting this technical solution, when the heat-using system is in a shutdown or low-load operation state, the high-temperature heat storage medium from each characteristic tower solar thermal collection system can be stored in whole or in part in the centralized high-temperature heat storage unit 8; when the heat-using system is in a high-load operation state, even if the second pipeline 25 in each characteristic tower solar thermal collection system provides insufficient high-temperature heat storage medium to the heat-using system or does not provide high-temperature heat storage medium to the heat-using system, the centralized high-temperature heat storage unit 8 can use its stored high-temperature heat storage medium to supplement the high-temperature heat storage medium required by the heat-using system, thereby meeting the actual needs of the heat-using system, so that the heat-using system can operate according to the preset requirements; similarly, when the heat absorption module 3 in each characteristic tower solar thermal collection system is in a high-load operation state, In the low-load operation state, when the transportation capacity of the second pipeline 25 in each characteristic tower solar thermal collection system cannot timely transport the high-temperature heat storage medium output from the corresponding heat absorption module 3, the excess high-temperature heat storage medium output from the corresponding heat absorption module 3 can be stored in the corresponding first high-temperature heat storage unit 6, so as not to affect the operation of each heat absorption module 3; when the heat absorption module 3 in each characteristic tower solar thermal collection system is in the shutdown or low-load operation state, since the second pipeline 25 in each characteristic tower solar thermal collection system is in an idle state or has surplus transportation capacity at this time, the high-temperature heat storage medium stored in each first high-temperature heat storage unit 6 can be transported to the heat-using system or the centralized high-temperature heat storage unit 8 through the corresponding second pipelines 25. Based on the above description, it can be seen that by adopting the technical solution of this embodiment, the heat absorption module 3 in the heat system and each characteristic tower solar thermal collection system can be used to operate normally according to the preset operating mode, so that the high-temperature heat storage medium output from each characteristic tower solar thermal collection system can be transported to the heat-using system or the centralized high-temperature heat storage unit 8 by the corresponding second pipeline 25 in a time-sharing manner. Therefore, the requirements for the maximum flow rate allowed by the second pipeline 25 in each characteristic tower solar thermal collection system can be reduced, and the cost of the second pipeline 25 in each characteristic tower solar thermal collection system can be reduced.At the same time, the high-temperature heat storage medium in the centralized high-temperature heat storage unit 8 can be quickly delivered to the heat-using system via the centralized high-temperature heat storage medium delivery pump module 9 when the heat-using system needs it. Compared to solutions that directly deliver high-temperature heat storage medium to the heat-using system from the heat absorption module 3 or the first high-temperature heat storage unit 6 in each characteristic tower-type solar thermal collection system, this can quickly respond to the operating needs of the heat-using system and shorten response time. In addition, the provision of the centralized high-temperature heat storage unit 8 and the centralized high-temperature heat storage medium delivery pump module 9 can effectively reduce the impact of the operating conditions of the heat absorption module 3 in each characteristic tower-type solar thermal collection system on the heat-using system (for example, when the heat-using system needs to operate at a high load, but the heat absorption module 3 is unable to directly provide sufficient high-temperature heat storage medium to the heat-using system due to factors such as weather), allowing the operating load of the heat-using system to be more flexibly adjusted. In addition, it should be noted that, since the technical solution in Example 2 includes all the technical solutions in Example 1, Example 2 also includes a technical solution in which the ninth distance is simultaneously smaller than each of the tenth distance and the eleventh distance in each characteristic tower solar thermal collection system, that is, the first high-temperature heat storage unit 6 is arranged near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located, and the heat-using system is kept away from the heat absorption module 3 and the first high-temperature heat storage unit 6 in each characteristic tower solar thermal collection system. At the same time, in Example 2, the requirement for the maximum flow rate allowed by the second pipeline 25 in each characteristic tower solar thermal collection system can be reduced, that is, in each characteristic tower solar thermal collection system, the heat absorption module 3 The maximum flow rate that can be allowed by the connecting pipeline between the high-temperature heat storage medium output end and the high-temperature heat storage medium input end of the first high-temperature heat storage unit 6 is greater than the maximum flow rate that can be allowed by the second pipeline. Therefore, by arranging the first high-temperature heat storage unit 6 near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located, and making the heat-using system away from the heat absorption module 3 and the first high-temperature heat storage unit 6 in each characteristic tower solar thermal collection system, the length of the connecting pipeline between the high-temperature heat storage medium output end of the heat absorption module 3 and the high-temperature heat storage medium input end of the first high-temperature heat storage unit 6, which has a higher unit length cost, is essentially increased by increasing the length of the second pipeline 25 with a lower unit length cost, thereby reducing the length of the connecting pipeline between the high-temperature heat storage medium output end of the heat absorption module 3 and the high-temperature heat storage medium input end of the first high-temperature heat storage unit 6, thereby reducing the overall cost of the tower solar thermal utilization system.

[0057] Furthermore, in this embodiment, when the flow rate of the high-temperature heat storage medium in the connecting pipeline between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit 8 and the high-temperature heat storage medium input end of the heat-using system and the second pipeline 25 in each characteristic tower-type solar thermal collection system are the same, the maximum flow rate that can be allowed by the connecting pipeline between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit 8 and the high-temperature heat storage medium input end of the heat-using system is greater than the maximum flow rate that can be allowed by the second pipeline 25 in any one of the characteristic tower-type solar thermal collection systems.

[0058] Furthermore, in this embodiment, Figure 2 As shown, the distance between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit 8 and the high-temperature heat storage medium input end of the heat-using system is the twelfth distance; in each characteristic tower solar thermal collection system, the distance between the high-temperature heat storage medium output end of the first high-temperature heat storage unit 6 and the high-temperature heat storage medium input end of the heat-using system is the thirteenth distance, the distance between the high-temperature heat storage medium output end of the first high-temperature heat storage unit 6 and the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit 8 is the fourteenth distance, and the distance between the high-temperature heat storage medium output end of the heat absorption module 3 and the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit 8 is the fifteenth distance. The distance between the high-temperature heat storage medium output end of the heat absorption module 3 and the high-temperature heat storage medium input end of the heat-using system is the sixteenth distance; and the twelfth distance is simultaneously less than each of the thirteenth distance, fourteenth distance, fifteenth distance, and sixteenth distance in any characteristic tower-type solar thermal collection system. It should be noted that the first high-temperature heat storage unit 6 and the heat absorption module 3 mentioned herein belong to the same characteristic tower-type solar thermal collection system, and the twelfth distance here is compared with the thirteenth distance, fourteenth distance, fifteenth distance, and sixteenth distance in the same characteristic tower-type solar thermal collection system. Furthermore, it should be noted that in this embodiment, the tenth distance and the thirteenth distance in the same characteristic tower-type solar thermal collection system are the same distance, and the eleventh distance and the sixteenth distance in the same characteristic tower-type solar thermal collection system are the same distance. By adopting this solution, the centralized high-temperature heat storage unit 8 can be set near the heat-using system, and the centralized high-temperature heat storage unit 8 can be kept away from the heat absorption module 3 and the first high-temperature heat storage unit 6 in each characteristic tower solar thermal collection system, thereby reducing the length of the connecting pipeline between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit 8 and the high-temperature heat storage medium input end of the heat-using system, and extending the length of the second pipeline. At the same time, since the maximum flow rate allowed by the connecting pipeline between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit 8 and the high-temperature heat storage medium input end of the heat-using system is greater than the maximum flow rate allowed by the second pipeline 25 in any characteristic tower solar thermal collection system, this solution essentially reduces the length of the connecting pipeline between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit 8 and the high-temperature heat storage medium input end of the heat-using system, which has a higher unit length cost, by increasing the length of the second pipeline 25, which has a lower unit length cost, thereby reducing the overall cost of the tower solar thermal utilization system.

[0059] Further, if Figure 5As shown, in this embodiment, in each characteristic tower solar thermal collection system, a fourth valve 105 is provided on the fourth pipeline 28, and a sixth valve 106 is provided on the sixth pipeline 29. By controlling the fourth valve 105, the fourth pipeline 28 can be shut off, connected, and the flow rate can be adjusted; by controlling the sixth valve 106, the sixth pipeline 29 can be shut off, connected, and the flow rate can be adjusted. In each characteristic tower solar thermal collection system: when the fourth valve 105 is closed and the sixth valve 106 is opened, the high-temperature heat storage medium from the high-temperature heat storage medium output end of the second pipeline 25 all enters the heat utilization system; when the sixth valve 106 is closed and the fourth valve 105 is opened, the high-temperature heat storage medium from the high-temperature heat storage medium output end of the second pipeline 25 all enters the centralized high-temperature heat storage unit 8; when both the fourth valve 105 and the sixth valve 106 are opened, part of the high-temperature heat storage medium from the high-temperature heat storage medium output end of the second pipeline 25 enters the heat utilization system, and the other part enters the centralized high-temperature heat storage unit 8. At the same time, by adjusting the opening of the fourth valve 105 and the sixth valve 106, the flow rate of the high-temperature heat storage medium in the fourth pipeline 28 and the sixth pipeline 29 can be adjusted.

[0060] Example 3

[0061] like Figure 3 As shown, this embodiment provides a tower-type solar thermal utilization system based on embodiment 1. This embodiment is based on Example 1. In each characteristic tower solar thermal collection system, the first heat storage module further includes a first low-temperature heat storage unit 4 for storing a low-temperature heat storage medium and a first low-temperature heat storage medium delivery pump module 5 for pumping the low-temperature heat storage medium in the first low-temperature heat storage unit 4 to the low-temperature heat storage medium input end of the heat absorption module 3. Each characteristic tower solar thermal collection system also includes a tenth pipeline 22. In each characteristic tower solar thermal collection system, the low-temperature heat storage medium in the first low-temperature heat storage unit 4 is driven by the first low-temperature heat storage medium delivery pump module 5 and is delivered to the low-temperature heat storage medium input end of the heat absorption module 3 through the tenth pipeline 22. It should be noted that the tenth pipeline 22, the first low-temperature heat storage medium delivery pump module 5, the first low-temperature heat storage unit 4, and the heat absorption module 3 mentioned herein all belong to the same characteristic tower solar thermal collection system. Each characteristic tower solar thermal collection system also includes a seventh pipeline 26. In each characteristic tower solar thermal collection system, the first low-temperature heat storage unit 4 receives the low-temperature heat storage medium output from the low-temperature heat storage medium output end of the self-heating system through the seventh pipeline 26. Specifically, if Figure 3As shown, in each characteristic tower solar thermal collection system, the first low-temperature heat storage medium delivery pump module 5 is arranged on the first low-temperature heat storage unit 4; in each characteristic tower solar thermal collection system, a seventh valve 109 is provided on the seventh pipeline 26, and the seventh valve 109 is used to control the shutoff, connection and flow regulation of the seventh pipeline 26. In addition, it should be noted that, in the present embodiment, the first low-temperature heat storage unit 4 is a separate storage tank. Of course, in other embodiments, the first low-temperature heat storage unit 4 may also be a local space in a storage tank. For example, a storage tank includes a high-temperature heat storage medium storage space and a low-temperature heat storage medium storage space that are separated from each other, wherein the storage space for the low-temperature heat storage medium is the first low-temperature heat storage unit 4 mentioned herein; and the first low-temperature heat storage medium delivery pump module 5 may be a separate first low-temperature heat storage medium delivery pump, or a pump group including two or more first low-temperature heat storage medium delivery pumps. When the first low-temperature heat storage medium delivery pump module 5 includes two or more first low-temperature heat storage medium delivery pumps, each first low-temperature heat storage medium delivery pump may serve as a backup for each other, or may work simultaneously to achieve the functions that the first low-temperature heat storage medium delivery pump module 5 needs to achieve.

[0062] By providing a first low-temperature heat storage unit 4 and a first low-temperature heat storage medium delivery pump module 5 in each characteristic tower solar thermal collection system, the low-temperature heat storage medium output by the heat-using system can be received and stored in a timely manner, and then the low-temperature heat storage medium is delivered to the corresponding heat absorption module 3 through each first low-temperature heat storage medium delivery pump module 5. With this design, the low-temperature heat storage medium at the output end of the low-temperature heat storage medium of the self-using heat system does not directly enter each heat absorption module, but first enters each first low-temperature heat storage unit 4, and then enters the heat absorption module 3 corresponding to each first low-temperature heat storage unit 4, so that the low-temperature heat storage medium output by the self-using heat system can be delivered in sections, thereby reducing the driving capacity requirements of the driving device (the driving device can be a heat storage medium delivery pump) used to drive the flow of the low-temperature heat storage medium in each seventh pipeline 26, thereby reducing costs. In addition, by providing a first low-temperature heat storage unit 4 and a first low-temperature heat storage medium delivery pump module 5 in each characteristic tower solar thermal collection system, since a spare low-temperature heat storage medium is stored in the first low-temperature heat storage unit 4, the impact of the operation of the heat-using system on the operation of each heat-absorbing module 3 can be effectively reduced (for example, the heat-absorbing module 3 needs to operate at a high load, but the heat-using system is limited by the peak load regulation of the power grid or other restrictions and cannot provide sufficient low-temperature heat storage medium for the heat-absorbing module 3), so that the operation of each heat-absorbing module 3 can be adjusted more flexibly.

[0063] Furthermore, in this embodiment, Figure 3As shown, in each characteristic tower solar thermal system, the distance between the low-temperature heat storage medium output end of the first low-temperature heat storage unit 4 and the low-temperature heat storage medium input end of the heat absorption module 3 is a first distance, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 and the low-temperature heat storage medium output end of the heat-using system is a second distance, and the distance between the low-temperature heat storage medium input end of the heat absorption module 3 and the low-temperature heat storage medium output end of the heat-using system is a third distance. Furthermore, the first distance is simultaneously less than each of the second and third distances. It should be noted that the comparison here is of the first, second, and third distances within the same characteristic tower solar thermal system. In summary, using the above design, in each characteristic tower solar thermal system, the first low-temperature heat storage unit 4 can be positioned near the heat absorption module 3 within the characteristic tower solar thermal system in which it is located, thereby shortening the length of the tenth pipeline 22 (i.e., the connecting pipeline between the low-temperature heat storage medium output end of the first low-temperature heat storage unit 4 and the low-temperature heat storage medium input end of the heat absorption module 3), thereby reducing costs.

[0064] Furthermore, in this embodiment, Figure 3 As shown, each characteristic tower-type solar thermal collection system also includes a ninth pipeline 23. In each characteristic tower-type solar thermal collection system, the high-temperature heat storage medium output end of the heat absorption module 3 is further connected to the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 via the ninth pipeline 23. Specifically, in this embodiment, each ninth pipeline 23 is provided with a ninth valve 101, which is used to control the shutoff, connection, and flow regulation of the corresponding ninth pipeline 23. In each characteristic tower solar thermal collection system, during the startup phase of the heat absorption module 3 or when the solar energy reflected by the heliostat field module 201 to the heat absorption module 3 is insufficient, the temperature of the heat storage medium output from the high-temperature heat storage medium output end of the heat absorption module 3 cannot meet the preset requirement. By providing a ninth pipeline 23 in each characteristic tower solar thermal collection system, the heat storage medium output from the high-temperature heat storage medium output end of the heat absorption module 3 that does not meet the temperature requirement can be re-entered into the corresponding first low-temperature heat storage unit 4, and then can be delivered to the corresponding heat absorption module 3 by the corresponding first low-temperature heat storage medium delivery pump module 5 for reheating, thereby obtaining a high-temperature heat storage medium that meets the temperature requirement.

[0065] Example 4

[0066] like Figure 4As shown, this embodiment provides a tower-type solar thermal utilization system based on Example 2. This embodiment is based on Example 2. In each characteristic tower solar thermal collection system, the first heat storage module further includes a first low-temperature heat storage unit 4 for storing a low-temperature heat storage medium and a first low-temperature heat storage medium delivery pump module 5 for pumping the low-temperature heat storage medium in the first low-temperature heat storage unit 4 to the low-temperature heat storage medium input end of the heat absorption module 3. Each characteristic tower solar thermal collection system also includes a tenth pipeline 22. In each characteristic tower solar thermal collection system, the low-temperature heat storage medium in the first low-temperature heat storage unit 4 is driven by the first low-temperature heat storage medium delivery pump module 5 and is delivered to the low-temperature heat storage medium input end of the heat absorption module 3 through the tenth pipeline 22. It should be noted that the tenth pipeline 22, the first low-temperature heat storage medium delivery pump module 5, the first low-temperature heat storage unit 4, and the heat absorption module 3 mentioned herein all belong to the same characteristic tower solar thermal collection system. Each characteristic tower solar thermal collection system also includes a seventh pipeline 26. In each characteristic tower solar thermal collection system, the first low-temperature heat storage unit 4 receives the low-temperature heat storage medium output from the low-temperature heat storage medium output end of the self-heating system through the seventh pipeline 26. Specifically, in each characteristic tower solar thermal collection system, the first low-temperature heat storage medium delivery pump module 5 is arranged on the first low-temperature heat storage unit 4; in each characteristic tower solar thermal collection system, a seventh valve 109 is provided on the seventh pipeline 26, and the seventh valve 109 is used to control the shutdown, connection and flow regulation of the seventh pipeline 26. In addition, it should be noted that, in the present embodiment, the first low-temperature heat storage unit 4 is a separate storage tank. Of course, in other embodiments, the first low-temperature heat storage unit 4 may also be a local space in a storage tank. For example, a storage tank includes a high-temperature heat storage medium storage space and a low-temperature heat storage medium storage space that are separated from each other, wherein the storage space for the low-temperature heat storage medium is the first low-temperature heat storage unit 4 mentioned herein; and the first low-temperature heat storage medium delivery pump module 5 may be a separate first low-temperature heat storage medium delivery pump, or a pump group including two or more first low-temperature heat storage medium delivery pumps. When the first low-temperature heat storage medium delivery pump module 5 includes two or more first low-temperature heat storage medium delivery pumps, each first low-temperature heat storage medium delivery pump may serve as a backup for each other, or may work simultaneously to achieve the functions that the first low-temperature heat storage medium delivery pump module 5 needs to achieve.

[0067] By providing a first low-temperature heat storage unit 4 and a first low-temperature heat storage medium delivery pump module 5 in each characteristic tower solar thermal collection system, the low-temperature heat storage medium output by the heat-using system can be received and stored in a timely manner, and then the low-temperature heat storage medium is delivered to the corresponding heat absorption module 3 through each first low-temperature heat storage medium delivery pump module 5. With this design, the low-temperature heat storage medium at the output end of the low-temperature heat storage medium of the self-using heat system does not directly enter each heat absorption module, but first enters each first low-temperature heat storage unit 4, and then enters the heat absorption module 3 corresponding to each first low-temperature heat storage unit 4, so that the low-temperature heat storage medium output by the self-using heat system can be delivered in sections, thereby reducing the driving capacity requirements of the driving device (the driving device can be a heat storage medium delivery pump) used to drive the flow of the low-temperature heat storage medium in each seventh pipeline 26, thereby reducing costs. In addition, by providing a first low-temperature heat storage unit 4 and a first low-temperature heat storage medium delivery pump module 5 in each characteristic tower solar thermal collection system, since a spare low-temperature heat storage medium is stored in the first low-temperature heat storage unit 4, the impact of the operation of the heat-using system on the operation of each heat-absorbing module 3 can be effectively reduced (for example, the heat-absorbing module 3 needs to operate at a high load, but the heat-using system is limited by the peak load regulation of the power grid or other restrictions and cannot provide sufficient low-temperature heat storage medium for the heat-absorbing module 3), so that the operation of each heat-absorbing module 3 can be adjusted more flexibly.

[0068] Furthermore, in this embodiment, Figure 4 As shown, in each characteristic tower solar thermal system, the distance between the low-temperature heat storage medium output end of the first low-temperature storage unit 4 and the low-temperature heat storage medium input end of the heat absorption module 3 is a first distance, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 and the low-temperature heat storage medium output end of the heat-using system is a second distance, and the distance between the low-temperature heat storage medium input end of the heat absorption module 3 and the low-temperature heat storage medium output end of the heat-using system is a third distance. Furthermore, the first distance is simultaneously less than each of the second and third distances. It should be noted that this comparison is made between the first, second, and third distances within the same characteristic tower solar thermal system. This solution allows the first low-temperature heat storage unit 4 to be positioned close to the heat absorption module 3, while simultaneously positioning the heat-using unit away from the heat absorption module 3 and the first low-temperature heat storage unit 4. In summary, by adopting the above design, in each characteristic tower solar thermal collection system, the first low-temperature heat storage unit 4 can be arranged near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located, thereby shortening the length of the tenth pipeline 22 (i.e., the connecting pipeline between the low-temperature heat storage medium output end of the first low-temperature heat storage unit 4 and the low-temperature heat storage medium input end of the heat absorption module 3), thereby reducing costs.

[0069] Furthermore, in this embodiment, Figure 4As shown, each characteristic tower-type solar thermal collection system also includes a ninth pipeline 23. In each characteristic tower-type solar thermal collection system, the high-temperature heat storage medium output end of the heat absorption module 3 is further connected to the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 via the ninth pipeline 23. Specifically, in this embodiment, each ninth pipeline 23 is provided with a ninth valve 101, which is used to control the shutoff, connection, and flow regulation of the corresponding ninth pipeline 23. In each characteristic tower solar thermal collection system, during the startup phase of the heat absorption module 3 or when the solar energy reflected by the heliostat field module 201 to the heat absorption module 3 is insufficient, the temperature of the heat storage medium output from the high-temperature heat storage medium output end of the heat absorption module 3 cannot meet the preset requirement. By providing a ninth pipeline 23 in each characteristic tower solar thermal collection system, the heat storage medium output from the high-temperature heat storage medium output end of the heat absorption module 3 that does not meet the temperature requirement can be re-entered into the corresponding first low-temperature heat storage unit 4, and then can be delivered to the corresponding heat absorption module 3 by the corresponding first low-temperature heat storage medium delivery pump module 5 for reheating, thereby obtaining a high-temperature heat storage medium that meets the temperature requirement.

[0070] Example 5

[0071] like Figure 5 As shown, this embodiment provides a tower-type solar thermal utilization system based on Example 3. This embodiment, in addition to Example 3, includes a centralized low-temperature heat storage unit 12 and a centralized low-temperature heat storage medium delivery pump module 13 for pumping the low-temperature heat storage medium in the centralized low-temperature heat storage unit 12 to each first low-temperature heat storage unit 4. In this embodiment, the centralized low-temperature heat storage medium delivery pump module 13 is disposed on the centralized low-temperature heat storage unit 12.

[0072] Specifically, the low-temperature thermal storage medium output end of the heat-using system is connected to the low-temperature thermal storage medium input end of the centralized low-temperature thermal storage unit 12 via the eighth pipeline 30. In each characteristic tower-type solar thermal collection system, the low-temperature thermal storage medium input end of the first low-temperature thermal storage unit 4 is connected to the low-temperature thermal storage medium output end of the seventh pipeline 26, the low-temperature thermal storage medium input end of the seventh pipeline 26 is connected to the low-temperature thermal storage medium output end of the heat-using system, and the low-temperature thermal storage medium output end of the centralized low-temperature thermal storage unit 12 is connected to the seventh pipeline 26 via the twelfth pipeline 32. Alternatively, in each characteristic tower-type solar thermal collection system, the low-temperature thermal storage medium input end of the first low-temperature thermal storage unit 4 is connected to the low-temperature thermal storage medium output end of the seventh pipeline 26, and the low-temperature thermal storage medium output end of the centralized low-temperature thermal storage unit 12 is connected to the seventh pipeline 26 via the twelfth pipeline 32. In each characteristic tower solar thermal collection system, when the flow rates of the low-temperature heat storage medium in the seventh pipeline 26 and the tenth pipeline 22 are the same, the maximum flow rate allowed by the tenth pipeline 22 is greater than the maximum flow rate allowed by the seventh pipeline 26.

[0073] Specifically, in this embodiment, Figure 5 As shown, the centralized low-temperature heat storage unit 12 is a separate storage tank. Of course, in other embodiments, the centralized low-temperature heat storage unit 12 can also be a local space in a storage tank. For example, a storage tank includes a high-temperature heat storage medium storage space and a low-temperature heat storage medium storage space that are separated from each other, wherein the storage space for the low-temperature heat storage medium is the centralized low-temperature heat storage unit 12 mentioned here. It should be noted that the centralized low-temperature heat storage medium delivery pump module 13 can be a separate centralized low-temperature heat storage medium delivery pump, or it can be a pump group including two or more centralized low-temperature heat storage medium delivery pumps; when the centralized low-temperature heat storage medium delivery pump module 13 includes two or more centralized low-temperature heat storage medium delivery pumps, there can be a low-temperature heat storage medium delivery pump as a backup, there can be a low-temperature heat storage medium delivery pump to supply low-temperature heat storage medium to a first low-temperature heat storage unit 4, or there can be multiple low-temperature heat storage medium delivery pumps to supply low-temperature heat storage medium to one of the first low-temperature heat storage units 4 at the same time. In the case of heat medium, there may also be a situation where a low-temperature heat storage medium delivery pump supplies low-temperature heat storage medium to multiple first low-temperature heat storage units 4 at the same time, which is not limited here (for example, in a certain embodiment, it may be: the centralized low-temperature heat storage medium delivery pump module 13 includes two centralized low-temperature heat storage medium delivery pumps, and the entire tower solar thermal power generation system includes two first low-temperature heat storage units 4, then the two centralized low-temperature heat storage medium delivery pumps are respectively set in a one-to-one correspondence with the two first low-temperature heat storage units 4, that is, one centralized low-temperature heat storage medium delivery pump supplies low-temperature heat storage medium to one first low-temperature heat storage unit 4 alone). In addition, if Figure 5 As shown, in this embodiment, an eighth valve 108 is provided on the eighth pipeline 30, and the eighth valve 108 is used to control the shutoff, connection and flow regulation of the eighth pipeline 30. A twelfth valve 110 is provided on each twelfth pipeline 32, and the twelfth valve 110 is used to control the shutoff, connection and flow regulation of the corresponding twelfth pipeline 32.

[0074] In addition, it should be noted that regardless of whether the low-temperature heat storage medium output by the heat-using system is directly transported to the corresponding first low-temperature heat storage unit 4 through each seventh pipeline 26; or whether it first enters the centralized low-temperature heat storage unit 12 and then is pumped out to each seventh pipeline 26 through the centralized low-temperature heat storage medium delivery pump module 13 and then transported to the corresponding first low-temperature heat storage unit 4, the ultimate goal is to transport the low-temperature heat storage medium output by the heat-using system to each first low-temperature heat storage unit 4. Therefore, in each characteristic tower solar thermal collection system, the above methods and their combinations all belong to the implementation methods in which the first low-temperature heat storage unit 4 receives the low-temperature heat storage medium output from the low-temperature heat storage medium output end of the heat-using system through the seventh pipeline 26.

[0075] In an actual tower solar thermal utilization system, the heat-using system and the heat-absorbing modules 3 in each characteristic tower solar thermal collection system do not always operate synchronously. For example, at night or during rainy weather, the heat-absorbing modules 3 in each characteristic tower solar thermal collection system are shut down while the heat-using system is in operation. Alternatively, the heat-using system is shut down due to grid peak regulation or actual operating needs, while the heat-absorbing modules 3 in each characteristic tower solar thermal collection system are in operation. This embodiment fully utilizes the characteristic that the heat-using system and the heat-absorbing modules 3 in each characteristic tower solar thermal collection system do not always operate synchronously. It proposes a technical solution in which, on the basis of providing a first low-temperature heat storage unit 4 and a first low-temperature heat storage medium delivery pump module 5 in each characteristic tower solar thermal collection system, a centralized low-temperature heat storage unit 12 and a centralized low-temperature heat storage medium delivery pump module 13 are further provided. By adopting this technical solution, when the heat-using system is in a high-load operation state, when the transportation capacity of the seventh pipeline 26 in each characteristic tower solar thermal collection system cannot timely transport the low-temperature heat storage medium output from the heat-using system, the excess low-temperature heat storage medium output from the heat-using system can be stored in the centralized low-temperature heat storage unit 12, thereby not affecting the operation of the heat-using system; when the heat-using system is in a shutdown or low-load operation state, since the seventh pipeline 26 in each characteristic tower solar thermal collection system is in an idle state or has excess transportation capacity, the low-temperature heat storage medium stored in the centralized low-temperature heat storage unit 12 can be transported to the corresponding heat absorption modules 3 or the first low-temperature heat storage unit 4 through the corresponding seventh pipelines 26; similarly, in each characteristic tower solar thermal collection system When the heat absorption module 3 is in a high-load operation state, even if the seventh pipeline 26 in each characteristic tower solar thermal collection system provides insufficient low-temperature heat storage medium to the corresponding heat absorption module 3 or does not provide low-temperature heat storage medium to each heat absorption module 3, the first low-temperature heat storage unit 4 in each characteristic tower solar thermal collection system can use its stored low-temperature heat storage medium to supplement the low-temperature heat storage medium required by the corresponding heat absorption module 3, thereby meeting the actual needs of the corresponding heat absorption module 3, so that each heat absorption module 3 can operate according to the preset requirements; when the heat absorption module 3 in each characteristic tower solar thermal collection system is in a shutdown or low-load operation state, the low-temperature heat storage medium from the heat user system or the centralized low-temperature heat storage unit 12 can enter the corresponding first low-temperature heat storage unit 4 through the corresponding seventh pipeline 26 in whole or in part for storage. Based on the above description, it can be seen that the technical solution of this embodiment can enable the low-temperature heat storage medium output from the self-use heat system to be transported to the corresponding tower solar thermal collection systems by the corresponding seventh pipelines 26 in a time-sharing manner. Therefore, when the heat absorption modules 3 in the heat system and each characteristic tower solar thermal collection system operate normally according to the preset operating mode, the requirements for the maximum flow rate that can be allowed by the seventh pipeline 26 in each characteristic tower solar thermal collection system can be reduced, thereby reducing the cost of the seventh pipeline 26 in each characteristic tower solar thermal collection system.Furthermore, in each characteristic tower solar thermal collection system of this embodiment, the tenth pipeline 22 is required to maintain the normal operation of the heat absorption module. All of the low-temperature heat storage medium output from the low-temperature heat storage medium output end of the first low-temperature heat storage medium delivery pump module 5 must pass through the tenth pipeline 22 into the heat absorption module. Therefore, the maximum flow rate allowed by the tenth pipeline 22 must be greater than the maximum flow rate allowed by the seventh pipeline 26. Consequently, the unit length cost of the tenth pipeline 22 is higher than the unit length cost of the seventh pipeline 26. By locating the first low-temperature heat storage unit 4 near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located (since this embodiment is an improvement on Example 3, and Example 3 already describes the first low-temperature heat storage unit 4 being located near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located, the first low-temperature heat storage unit 4 in this embodiment is also located near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located), the length of the tenth pipeline 22 can be shortened, further reducing costs.

[0076] Furthermore, in this embodiment, in each characteristic tower solar thermal collection system, the nominal diameter of the tenth pipeline 22 is greater than the nominal diameter of the seventh pipeline 26 .

[0077] Furthermore, in this embodiment, when the flow rates of the low-temperature heat storage medium in the eighth pipeline 30 and the seventh pipeline 26 in each characteristic tower-type solar thermal collection system are the same, the maximum flow rate that the eighth pipeline 30 can allow is greater than the maximum flow rate that the seventh pipeline 26 in any one of the characteristic tower-type solar thermal collection systems can allow.

[0078] Furthermore, in this embodiment, Figure 5As shown, the distance between the low-temperature heat storage medium input end of the centralized low-temperature heat storage unit 12 and the low-temperature heat storage medium output end of the heat-using system is the fourth distance; in each characteristic tower solar thermal collection system, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 and the low-temperature heat storage medium output end of the heat-using system is the fifth distance, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit 12 is the sixth distance, and the distance between the low-temperature heat storage medium input end of the heat absorption module 3 and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit 12 is the sixth distance. The distance between the low-temperature heat storage medium input end of the heat absorption module 3 and the low-temperature heat storage medium output end of the heat-using system is the eighth distance; and the fourth distance is simultaneously less than each of the fifth distance, sixth distance, seventh distance, and eighth distance in any of the characteristic tower-type solar thermal collection systems. It should be noted that the first low-temperature heat storage unit 4 and the heat absorption module 3 mentioned herein all belong to the same characteristic tower-type solar thermal collection system, and the fourth distance here is compared with the fifth distance, sixth distance, seventh distance, and eighth distance in the same characteristic tower-type solar thermal collection system. In addition, it should be noted that in this embodiment, the second distance and the fifth distance in the same characteristic tower-type solar thermal collection system are the same distance, and the third distance and the eighth distance in the same characteristic tower-type solar thermal collection system are the same distance. By adopting this solution, the centralized low-temperature heat storage unit 12 can be set near the heat-using system, and the centralized low-temperature heat storage unit 12 can be kept away from the heat absorption module 3 and the first low-temperature heat storage unit 4 in each characteristic tower solar thermal collection system, thereby reducing the length of the connecting pipeline (i.e., the eighth pipeline 30) between the low-temperature heat storage medium input end of the centralized low-temperature heat storage unit 12 and the low-temperature heat storage medium output end of the heat-using system, and extending the length of the seventh pipeline 26. At the same time, since the maximum flow rate that the eighth pipeline 30 can allow is greater than the maximum flow rate that the seventh pipeline 26 in any characteristic tower solar thermal collection system can allow, this solution essentially reduces the length of the eighth pipeline 30 with a higher unit length cost by increasing the length of the seventh pipeline 26 with a lower unit length cost, thereby reducing the overall cost of the tower solar thermal utilization system.

[0079] Example 6

[0080] like Figure 6 As shown, this embodiment provides a tower-type solar thermal utilization system based on Example 4. This embodiment, in addition to Example 4, includes a centralized low-temperature heat storage unit 12 and a centralized low-temperature heat storage medium delivery pump module 13 for pumping the low-temperature heat storage medium in the centralized low-temperature heat storage unit 12 to each first low-temperature heat storage unit 4. In this embodiment, the centralized low-temperature heat storage medium delivery pump module 13 is disposed on the centralized low-temperature heat storage unit 12.

[0081] Specifically, the low-temperature heat storage medium output end of the heat-using system is connected to the low-temperature heat storage medium input end of the centralized low-temperature heat storage unit 12 through the eighth pipeline 30 . In each characteristic tower solar thermal collection system, the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 is connected to the low-temperature heat storage medium output end of the seventh pipeline 26, the low-temperature heat storage medium input end of the seventh pipeline 26 is connected to the low-temperature heat storage medium output end of the heat user system, and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit 12 is connected to the seventh pipeline 26 via the twelfth pipeline 32; alternatively, in each characteristic tower solar thermal collection system, the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 is connected to the low-temperature heat storage medium output end of the seventh pipeline 26, and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit 12 is connected to the seventh pipeline 26 via the twelfth pipeline 32; in each characteristic tower solar thermal collection system, when the low-temperature heat storage medium flow rates in the seventh pipeline 26 and the tenth pipeline 22 are the same, the maximum flow rate allowed at the low-temperature heat storage medium output end of the first low-temperature heat storage medium delivery pump module 5 in the tenth pipeline 22 is greater than the maximum flow rate allowed by the seventh pipeline 26.

[0082] Specifically, in this embodiment, Figure 6 As shown, the centralized low-temperature heat storage unit 12 is a separate storage tank. Of course, in other embodiments, the centralized low-temperature heat storage unit 12 can also be a local space in a storage tank. For example, a storage tank includes a high-temperature heat storage medium storage space and a low-temperature heat storage medium storage space that are separated from each other, wherein the storage space for the low-temperature heat storage medium is the centralized low-temperature heat storage unit 12 mentioned here. It should be noted that the centralized low-temperature heat storage medium delivery pump module 13 can be a separate centralized low-temperature heat storage medium delivery pump, or it can be a pump group including two or more centralized low-temperature heat storage medium delivery pumps; when the centralized low-temperature heat storage medium delivery pump module 13 includes two or more centralized low-temperature heat storage medium delivery pumps, there can be a low-temperature heat storage medium delivery pump as a backup, there can be a low-temperature heat storage medium delivery pump to supply low-temperature heat storage medium to a first low-temperature heat storage unit 4, or there can be multiple low-temperature heat storage medium delivery pumps to supply low-temperature heat storage medium to one of the first low-temperature heat storage units 4 at the same time. In the case of heat medium, there may also be a situation where a low-temperature heat storage medium delivery pump supplies low-temperature heat storage medium to multiple first low-temperature heat storage units 4 at the same time, which is not limited here (for example, in a certain embodiment, it may be: the centralized low-temperature heat storage medium delivery pump module 13 includes two centralized low-temperature heat storage medium delivery pumps, and the entire tower solar thermal power generation system includes two first low-temperature heat storage units 4, then the two centralized low-temperature heat storage medium delivery pumps are respectively set in a one-to-one correspondence with the two first low-temperature heat storage units 4, that is, one centralized low-temperature heat storage medium delivery pump supplies low-temperature heat storage medium to one first low-temperature heat storage unit 4 alone). In addition, if Figure 6As shown, in this embodiment, an eighth valve 108 is provided on the eighth pipeline 30, and the eighth valve 108 is used to control the shutoff, connection and flow regulation of the eighth pipeline 30. A twelfth valve 110 is provided on each twelfth pipeline 32, and the twelfth valve 110 is used to control the shutoff, connection and flow regulation of the corresponding twelfth pipeline 32.

[0083] In addition, it should be noted that regardless of whether the low-temperature heat storage medium output by the heat-using system is directly transported to the corresponding first low-temperature heat storage unit 4 through each seventh pipeline 26; or whether it first enters the centralized low-temperature heat storage unit 12 and then is pumped out to each seventh pipeline 26 through the centralized low-temperature heat storage medium delivery pump module 13 and then transported to the corresponding first low-temperature heat storage unit 4, the ultimate goal is to transport the low-temperature heat storage medium output by the heat-using system to each first low-temperature heat storage unit 4. Therefore, in each characteristic tower solar thermal collection system, the above methods and their combinations all belong to the implementation methods in which the first low-temperature heat storage unit 4 receives the low-temperature heat storage medium output from the low-temperature heat storage medium output end of the heat-using system through the seventh pipeline 26.

[0084] In an actual tower solar thermal utilization system, the heat-using system and the heat-absorbing modules 3 in each characteristic tower solar thermal collection system do not always operate synchronously. For example, at night or during rainy weather, the heat-absorbing modules 3 in each characteristic tower solar thermal collection system are shut down while the heat-using system is in operation. Alternatively, the heat-using system is shut down due to grid peak regulation or actual operating needs, while the heat-absorbing modules 3 in each characteristic tower solar thermal collection system are in operation. This embodiment fully utilizes the characteristic that the heat-using system and the heat-absorbing modules 3 in each characteristic tower solar thermal collection system do not always operate synchronously. It proposes a technical solution in which, on the basis of providing a first low-temperature heat storage unit 4 and a first low-temperature heat storage medium delivery pump module 5 in each characteristic tower solar thermal collection system, a centralized low-temperature heat storage unit 12 and a centralized low-temperature heat storage medium delivery pump module 13 are further provided. By adopting this technical solution, when the heat-using system is in a high-load operation state, when the transportation capacity of the seventh pipeline 26 in each characteristic tower solar thermal collection system cannot timely transport the low-temperature heat storage medium output from the heat-using system, the excess low-temperature heat storage medium output from the heat-using system can be stored in the centralized low-temperature heat storage unit 12, thereby not affecting the operation of the heat-using system; when the heat-using system is in a shutdown or low-load operation state, since the seventh pipeline 26 in each characteristic tower solar thermal collection system is in an idle state or has excess transportation capacity, the low-temperature heat storage medium stored in the centralized low-temperature heat storage unit 12 can be transported to the corresponding heat absorption modules 3 or the first low-temperature heat storage unit 4 through the corresponding seventh pipelines 26; similarly, in each characteristic tower solar thermal collection system When the heat absorption module 3 is in a high-load operation state, even if the seventh pipeline 26 in each characteristic tower solar thermal collection system provides insufficient low-temperature heat storage medium to the corresponding heat absorption module 3 or does not provide low-temperature heat storage medium to each heat absorption module 3, the first low-temperature heat storage unit 4 in each characteristic tower solar thermal collection system can use its stored low-temperature heat storage medium to supplement the low-temperature heat storage medium required by the corresponding heat absorption module 3, thereby meeting the actual needs of the corresponding heat absorption module 3, so that each heat absorption module 3 can operate according to the preset requirements; when the heat absorption module 3 in each characteristic tower solar thermal collection system is in a shutdown or low-load operation state, the low-temperature heat storage medium from the heat user system or the centralized low-temperature heat storage unit 12 can enter the corresponding first low-temperature heat storage unit 4 through the corresponding seventh pipeline 26 in whole or in part for storage. Based on the above description, it can be seen that the technical solution of this embodiment can enable the low-temperature heat storage medium output from the self-use heat system to be transported to the corresponding tower solar thermal collection systems by the corresponding seventh pipelines 26 in a time-sharing manner. Therefore, when the heat absorption modules 3 in the heat system and each characteristic tower solar thermal collection system operate normally according to the preset operating mode, the requirements for the maximum flow rate that can be allowed by the seventh pipeline 26 in each characteristic tower solar thermal collection system can be reduced, thereby reducing the cost of the seventh pipeline 26 in each characteristic tower solar thermal collection system.Furthermore, in each characteristic tower solar thermal collection system of this embodiment, the tenth pipeline 22 is required to maintain the normal operation of the heat absorption module. All of the low-temperature heat storage medium output from the low-temperature heat storage medium output end of the first low-temperature heat storage medium delivery pump module 5 must pass through the tenth pipeline 22 into the heat absorption module. Therefore, the maximum flow rate allowed by the tenth pipeline 22 must be greater than the maximum flow rate allowed by the seventh pipeline 26. Therefore, the unit length cost of the tenth pipeline 22 is higher than the unit length cost of the seventh pipeline 26. By locating the first low-temperature heat storage unit 4 near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located (since this embodiment is an improvement based on Example 4, and since Example 4 already describes the first low-temperature heat storage unit 4 being located near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located, the first low-temperature heat storage unit 4 in this embodiment is also located near the heat absorption module 3 in the characteristic tower solar thermal collection system in which it is located), the length of the tenth pipeline 22 can be shortened, thereby reducing costs.

[0085] Furthermore, in this embodiment, in each characteristic tower solar thermal collection system, the nominal diameter of the tenth pipeline 22 is greater than the nominal diameter of the seventh pipeline 26 .

[0086] Furthermore, in this embodiment, when the flow rates of the low-temperature heat storage medium in the eighth pipeline 30 and the seventh pipeline 26 in each characteristic tower-type solar thermal collection system are the same, the maximum flow rate that the eighth pipeline 30 can allow is greater than the maximum flow rate that the seventh pipeline 26 in any one of the characteristic tower-type solar thermal collection systems can allow.

[0087] Furthermore, in this embodiment, Figure 6As shown, the distance between the low-temperature heat storage medium input end of the centralized low-temperature heat storage unit 12 and the low-temperature heat storage medium output end of the heat-using system is the fourth distance; in each characteristic tower solar thermal collection system, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 and the low-temperature heat storage medium output end of the heat-using system is the fifth distance, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit 4 and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit 12 is the sixth distance, and the distance between the low-temperature heat storage medium input end of the heat absorption module 3 and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit 12 is the sixth distance. The distance between the low-temperature heat storage medium input end of the heat absorption module 3 and the low-temperature heat storage medium output end of the heat-using system is the eighth distance, and the fourth distance is simultaneously less than each of the fifth distance, sixth distance, seventh distance, and eighth distance in any of the characteristic tower-type solar thermal collection systems. It should be noted that the first low-temperature heat storage unit 4 and the heat absorption module 3 mentioned herein all belong to the same characteristic tower-type solar thermal collection system, and the fourth distance here is compared with the fifth distance, sixth distance, seventh distance, and eighth distance in the same characteristic tower-type solar thermal collection system. Furthermore, it should be noted that in this embodiment, the second distance and the fifth distance in the same characteristic tower-type solar thermal collection system are the same distance, and the third distance and the eighth distance in the same characteristic tower-type solar thermal collection system are the same distance. By adopting this solution, the centralized low-temperature heat storage unit 12 can be set near the heat-using system, and the centralized low-temperature heat storage unit 12 can be kept away from the heat absorption module 3 and the first low-temperature heat storage unit 4 in each characteristic tower solar thermal collection system, thereby reducing the length of the connecting pipeline (i.e., the eighth pipeline 30) between the low-temperature heat storage medium input end of the centralized low-temperature heat storage unit 12 and the low-temperature heat storage medium output end of the heat-using system, and extending the length of the seventh pipeline 26. At the same time, since the maximum flow rate that the eighth pipeline 30 can allow is greater than the maximum flow rate that the seventh pipeline 26 in any characteristic tower solar thermal collection system can allow, this solution essentially reduces the length of the eighth pipeline 30 with a higher unit length cost by increasing the length of the seventh pipeline 26 with a lower unit length cost, thereby reducing the overall cost of the tower solar thermal utilization system.

[0088] The above describes specific embodiments of the present application. It should be understood that the present application is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the substantive content of the present application. In the absence of conflict, the embodiments of the present application and the features in the embodiments may be combined with each other in any manner.

Claims

1. A tower solar thermal utilization system, characterized in that: It includes a heat utilization system and at least two tower solar thermal collection systems; Each of the tower-type solar thermal collection systems includes a heliostat field module and a heat absorption module disposed on a heat absorption tower. The heliostat field module is configured to track the sun and reflect sunlight to the heat absorption module. The heat absorption module is configured to utilize the sunlight reflected by the heliostat field module to heat a low-temperature heat storage medium in the heat absorption module, thereby converting the low-temperature heat storage medium in the heat absorption module into a high-temperature heat storage medium. The high-temperature heat storage medium in the heat absorption module is output to a high-temperature heat storage medium input terminal of the heat-using system. Among all the tower solar thermal collection systems, at least one of the tower solar thermal collection systems is a characteristic tower solar thermal collection system; Each of the characteristic tower-type solar thermal collection systems further includes a first heat storage module, wherein the first heat storage module includes a first high-temperature heat storage unit for storing a high-temperature heat storage medium and a first high-temperature heat storage medium delivery pump module for pumping out the high-temperature heat storage medium in the first high-temperature heat storage unit; In each of the above-mentioned tower-type solar thermal collection systems, a first pipeline and a second pipeline are also included; In each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium output from the heat absorption module is transported to the first high-temperature heat storage unit through the first pipeline, and the high-temperature heat storage medium in the first high-temperature heat storage unit is transported to the heat utilization system through the second pipeline under the drive of the first high-temperature heat storage medium transport pump module; In each of the characteristic tower solar thermal collection systems, when the flow rates of the high-temperature heat storage medium in the first pipeline and the second pipeline are the same, the maximum flow rate that the first pipeline can allow is greater than the maximum flow rate that the second pipeline can allow.

2. A tower type solar thermal utilization system according to claim 1, characterized in that: In each of the above-mentioned tower-type solar thermal collection systems, a third pipeline is also included; In each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium output end of the heat absorption module is also connected to the second pipeline through the third pipeline.

3. A tower type solar thermal utilization system according to claim 2, characterized in that: In each of the above-mentioned tower-type solar thermal collection systems, a fifth pipeline is also included; In each of the characteristic tower solar thermal collection systems, the high-temperature heat storage medium input end of the fifth pipeline is connected to the high-temperature heat storage medium output end of the heat absorption module, and the high-temperature heat storage medium output end of the fifth pipeline is respectively connected to the high-temperature heat storage medium input end of the first pipeline and the high-temperature heat storage medium input end of the third pipeline.

4. A tower type solar thermal utilization system according to claim 1, characterized in that: In each of the characteristic tower-type solar thermal collection systems, the distance between the high-temperature heat storage medium output end of the heat absorption module and the high-temperature heat storage medium input end of the first high-temperature heat storage unit is a ninth distance, the distance between the high-temperature heat storage medium output end of the first high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat utilization system is a tenth distance, and the distance between the high-temperature heat storage medium output end of the heat absorption module and the high-temperature heat storage medium input end of the heat utilization system is an eleventh distance, and the ninth distance is simultaneously smaller than each of the tenth distance and the eleventh distance.

5. A tower type solar thermal utilization system according to claim 1, characterized in that: In each of the characteristic tower-type solar thermal collection systems, the nominal diameter of the first pipeline is larger than the nominal diameter of the second pipeline.

6. A tower solar thermal utilization system according to any one of claims 1 to 5, characterized in that: It also includes a centralized high-temperature heat storage unit and a centralized high-temperature heat storage medium delivery pump module; the centralized high-temperature heat storage unit is used to store high-temperature heat storage medium, and the centralized high-temperature heat storage medium delivery pump module is used to pump the high-temperature heat storage medium in the centralized high-temperature heat storage unit to the high-temperature heat storage medium input end of the heat use system; In each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium output end of the second pipeline is connected to the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit; or, in each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium output end of the second pipeline is connected to the high-temperature heat storage medium input end of the heat user system through a sixth pipeline, and the high-temperature heat storage medium output end of the second pipeline is also connected to the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit through a fourth pipeline.

7. A tower solar thermal utilization system according to claim 6, characterized in that: When the flow rate of the high-temperature heat storage medium in the connecting pipeline between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat-using system and the second pipeline in each of the characteristic tower-type solar thermal collection systems are the same, the maximum flow rate that can be allowed by the connecting pipeline between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat-using system is greater than the maximum flow rate that can be allowed by the second pipeline in any one of the characteristic tower-type solar thermal collection systems.

8. A tower type solar thermal utilization system according to claim 6, characterized in that: The distance between the high-temperature heat storage medium output end of the centralized high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat-using system is the twelfth distance; In each of the characteristic tower-type solar thermal collection systems, the distance between the high-temperature heat storage medium output end of the first high-temperature heat storage unit and the high-temperature heat storage medium input end of the heat-using system is a thirteenth distance, the distance between the high-temperature heat storage medium output end of the first high-temperature heat storage unit and the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit is a fourteenth distance, the distance between the high-temperature heat storage medium output end of the heat absorption module and the high-temperature heat storage medium input end of the centralized high-temperature heat storage unit is a fifteenth distance, and the distance between the high-temperature heat storage medium output end of the heat absorption module and the high-temperature heat storage medium input end of the heat-using system is a sixteenth distance; The twelfth distance is simultaneously smaller than each of the thirteenth distance, the fourteenth distance, the fifteenth distance, and the sixteenth distance in any one of the characteristic tower-type solar thermal collection systems.

9. A tower solar thermal utilization system according to any one of claims 1 to 5, characterized in that: In each of the characteristic tower-type solar thermal collection systems, the first heat storage module further includes a first low-temperature heat storage unit for storing low-temperature heat storage medium and a first low-temperature heat storage medium delivery pump module for delivering the low-temperature heat storage medium in the first low-temperature heat storage unit to the low-temperature heat storage medium input end of the heat absorption module; In each of the characteristic tower solar thermal collection systems, a tenth pipeline is also included; In each of the characteristic tower-type solar thermal collection systems, the low-temperature heat storage medium in the first low-temperature heat storage unit is driven by the first low-temperature heat storage medium delivery pump module and is transported to the low-temperature heat storage medium input end of the heat absorption module through the tenth pipeline; In each of the above-mentioned tower-type solar thermal collection systems, a seventh pipeline is also included; In each of the characteristic tower-type solar thermal collection systems, the first low-temperature heat storage unit receives the low-temperature heat storage medium output from the low-temperature heat storage medium output end of the heat-using system through the seventh pipeline.

10. A tower type solar thermal utilization system according to claim 9, characterized in that: It also includes a centralized low-temperature heat storage unit and a centralized low-temperature heat storage medium delivery pump module for pumping the low-temperature heat storage medium in the centralized low-temperature heat storage unit to each of the first low-temperature heat storage units; The low-temperature heat storage medium output end of the heat-using system is connected to the low-temperature heat storage medium input end of the centralized low-temperature heat storage unit through an eighth pipeline; In each of the characteristic tower-type solar thermal collection systems, the low-temperature heat storage medium input end of the first low-temperature heat storage unit is connected to the low-temperature heat storage medium output end of the heat user system and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit through the seventh pipeline; or, in each of the characteristic tower-type solar thermal collection systems, the low-temperature heat storage medium input end of the first low-temperature heat storage unit is connected to the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit through the seventh pipeline; In each of the characteristic tower solar thermal collection systems, when the flow rates of the low-temperature heat storage medium in the seventh pipeline and the tenth pipeline are the same, the maximum flow rate that the tenth pipeline can allow is greater than the maximum flow rate that the seventh pipeline can allow.

11. A tower type solar thermal utilization system according to claim 10, characterized in that: In each of the characteristic tower-type solar thermal collection systems, the nominal diameter of the tenth pipeline is larger than the nominal diameter of the seventh pipeline.

12. A tower type solar thermal utilization system according to claim 10, characterized in that: When the flow rate of the low-temperature heat storage medium in the eighth pipeline and the seventh pipeline in each of the characteristic tower-type solar thermal collection systems is the same, the maximum flow rate that the eighth pipeline can allow is greater than the maximum flow rate that the seventh pipeline in any of the characteristic tower-type solar thermal collection systems can allow.

13. The tower solar thermal utilization system according to claim 9, characterized in that: In each of the characteristic tower-type solar thermal collection systems, the distance between the low-temperature heat storage medium output end of the first low-temperature heat storage unit and the low-temperature heat storage medium input end of the heat absorption module is a first distance, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit and the low-temperature heat storage medium output end of the heat-using system is a second distance, and the distance between the low-temperature heat storage medium input end of the heat absorption module and the low-temperature heat storage medium output end of the heat-using system is a third distance, and the first distance is simultaneously smaller than each of the second distance and the third distance.

14. A tower type solar thermal utilization system according to claim 10, characterized in that: The distance between the low-temperature heat storage medium input end of the centralized low-temperature heat storage unit and the low-temperature heat storage medium output end of the heat-using system is a fourth distance; In each of the characteristic tower-type solar thermal collection systems, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit and the low-temperature heat storage medium output end of the heat-using system is a fifth distance, the distance between the low-temperature heat storage medium input end of the first low-temperature heat storage unit and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit is a sixth distance, the distance between the low-temperature heat storage medium input end of the heat absorption module and the low-temperature heat storage medium output end of the centralized low-temperature heat storage unit is a seventh distance, and the distance between the low-temperature heat storage medium input end of the heat absorption module and the low-temperature heat storage medium output end of the heat-using system is an eighth distance; Furthermore, the fourth distance is simultaneously smaller than each of the fifth distance, the sixth distance, the seventh distance, and the eighth distance in any one of the characteristic tower-type solar thermal collection systems.

15. The tower solar thermal utilization system according to claim 9, characterized in that: In each of the above-mentioned tower-type solar thermal collection systems, a ninth pipeline is also included; In each of the characteristic tower-type solar thermal collection systems, the high-temperature heat storage medium output end of the heat absorption module is further connected to the low-temperature heat storage medium input end of the first low-temperature heat storage unit through a ninth pipeline.

16. A tower type solar thermal utilization system according to claim 2 or 3, characterized in that: In each of the characteristic tower-type solar thermal collection systems, a first valve is provided on the first pipeline, a second valve is provided on the second pipeline, and a third valve is provided on the third pipeline; In each of the characteristic tower-type solar thermal collection systems, the connection point between the third pipeline and the second pipeline is the first connection point, the third valve is arranged between the first connection point and the high-temperature heat storage medium input end of the third pipeline, and the second valve is arranged between the first connection point and the high-temperature heat storage medium output end of the first high-temperature heat storage medium delivery pump module.

17. The tower solar thermal utilization system according to claim 6, characterized in that: In each of the characteristic tower-type solar thermal collection systems, a fourth valve is provided on the fourth pipeline, and a sixth valve is provided on the sixth pipeline.

18. The tower solar thermal utilization system according to claim 1, characterized in that: The heat utilization system includes a heat exchange system and a steam turbine generator set. The heat exchange system is used to transfer heat in the high-temperature heat storage medium to the water working medium, thereby generating high-temperature and high-pressure steam to drive the operation of the steam turbine generator set.

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