Hexagonal mirror field of multi-tower complexed heliostat

Abstract

The utility model provides a kind of hexagonal mirror field of multi-tower multiplex heliostat, solar thermal power generation technical field, comprising: at least two heat absorption towers;Multiple regular hexagonal modules, with the heat absorption tower one-to-one correspondence setting, each regular hexagonal module includes the exclusive heliostat array in the central region and the multiplex heliostat array in peripheral region;The regular hexagonal module is spliced with honeycomb arrangement mode, and the multiplex heliostat array of adjacent module shares boundary;The heat absorption tower is independently set in the geometric center position of each regular hexagonal module.The utility model can be through modularization design and honeycomb splicing, solve the problem of shadow shielding, multiplex rate low and expansion difficulty in traditional mirror field arrangement.

Description

Technical Field

[0001] This utility model relates to the field of solar thermal power generation technology, and in particular to a hexagonal mirror field for a multi-tower multiplex heliostat. Background Technology

[0002] Traditional tower-type solar mirror fields typically employ a single absorber tower structure, with heliostats arranged radially or in a rectangular grid. This arrangement presents the following problems:

[0003] Single-tower system efficiency bottleneck: The mirror field area of ​​a single tower is limited by the height of the heat-absorbing tower and the reflection distance of the heliostat, making it difficult to support large-capacity generator sets;

[0004] Severe shading: The radial arrangement causes the heliostats to block each other during the morning and evening hours, reducing optical efficiency;

[0005] Poor scalability: Adding a new heliostat requires a complete redesign of the overall layout, and modular expansion is not possible.

[0006] While existing technologies include multi-tower reusable mirror field schemes, they suffer from problems such as unreasonable spacing between heat-absorbing towers, low heliostat reuse rate, and poor terrain adaptability. Utility Model Content

[0007] The purpose of this invention is to overcome at least one of the shortcomings of the prior art and to provide a hexagonal mirror field for a multi-tower reusable heliostat that can solve the problems of shadow occlusion, low reuse rate and difficulty in expansion in traditional mirror field arrangements through modular design and honeycomb splicing.

[0008] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0009] According to one aspect of the present invention, a hexagonal mirror field for a multi-tower multiplex heliostat is provided, comprising:

[0010] At least two heat absorption towers;

[0011] Multiple regular hexagonal modules are arranged one-to-one with the heat absorption tower. Each regular hexagonal module includes an exclusive heliostat array located in its central region and a shared heliostat array located in its peripheral region.

[0012] The regular hexagonal modules are spliced ​​together in a honeycomb pattern, and the reusable heliostat arrays of adjacent modules share a common boundary;

[0013] The heat absorption tower is independently set at the geometric center of each regular hexagonal module.

[0014] In some exemplary embodiments of this utility model, based on the aforementioned scheme, the height of each heat-absorbing tower is independently designed according to the light-concentrating requirements of the corresponding regular hexagonal module.

[0015] In some exemplary embodiments of this utility model, based on the aforementioned scheme, the heliostat body of the reusable heliostat array is an adjustable support structure, which can adjust the focal length of the mirror surface according to the terrain slope and the situation of the reusable heat absorption tower.

[0016] In some exemplary embodiments of this utility model, based on the foregoing solution, the adjustable support structure includes:

[0017] The hydraulic telescopic unit includes a hydraulic telescopic rod and a telescopic rod motor. The bottom of the hydraulic telescopic rod is fixed to the back of the heliostat body. The telescopic rod motor is located at the top of the hydraulic telescopic rod and has an installation interface for connecting to the hydraulic telescopic rod.

[0018] The pitch adjustment shaft is connected at one end to the end of the telescopic rod motor that is away from the hydraulic telescopic rod, and at the other end to the azimuth adjustment shaft.

[0019] An azimuth adjustment shaft is connected to the end of the pitch adjustment shaft away from the telescopic rod motor, and the azimuth adjustment shaft is vertically arranged with an angle of less than 180° between it and the pitch adjustment shaft.

[0020] In some exemplary embodiments of this utility model, based on the aforementioned scheme, the splicing direction of the regular hexagonal module includes straight-line splicing extending along the horizontal axis, or broken-line splicing extending along the diagonal direction of the hexagon.

[0021] In some exemplary embodiments of this utility model, based on the aforementioned scheme, the bottom of the multiplex heliostat is provided with a detachable connector for modularly increasing or decreasing the number of multiplex heliostats.

[0022] In some exemplary embodiments of this utility model, based on the foregoing solution, the detachable connector is a snap-fit ​​connector.

[0023] In some exemplary embodiments of this utility model, based on the aforementioned scheme, a positioning device is provided at the boundary of the multiplexed heliostat array region, and adjacent regular hexagonal modules achieve rapid positioning through signal exchange between the positioning devices.

[0024] In some exemplary embodiments of this utility model, based on the aforementioned scheme, the mirror arrangement density of the exclusive heliostat array is higher than that of the reused heliostat array, and the number of exclusive heliostats accounts for 80%-90% of the overall hexagonal mirror field.

[0025] In some exemplary embodiments of this utility model, based on the aforementioned scheme, a drainage ditch is provided around the perimeter of the regular hexagonal module, the boundary of the regular hexagonal module of the drainage ditch is radially distributed, and the slope inside the ditch is consistent with the slope of the terrain.

[0026] As can be seen from the above technical solution, this utility model, through the honeycomb-arranged regular hexagonal module design, combined with an adjustable support structure and modular connection method, can effectively solve the efficiency bottleneck problem of traditional single-tower systems, improve the heliostat reuse rate, enhance terrain adaptability, and realize modular expansion. Attached Figure Description

[0027] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0028] Figure 1 This is a schematic diagram of one embodiment of the hexagonal mirror field of the multi-tower multiplex heliostat of this utility model;

[0029] Figure 2 This is a schematic diagram of one embodiment of the adjustable support structure of this utility model;

[0030] Figure 3 This is a structural schematic diagram of one embodiment of the hydraulic telescopic unit of this utility model;

[0031] Figure 4 This is a schematic diagram of another embodiment of the hexagonal mirror field of the multi-tower multiplex heliostat of this utility model;

[0032] Figure 5 This is a schematic diagram of another embodiment of the hexagonal mirror field of the multi-tower multiplex heliostat of this utility model;

[0033] Figure 6 This is a schematic diagram of another embodiment of the hexagonal mirror field of the multi-tower multiplex heliostat of this utility model;

[0034] Figure 7 This is a structural schematic diagram of one embodiment of the detachable connector of this utility model;

[0035] Figure 8 This is a structural schematic diagram of one embodiment of the drainage ditch of this utility model.

[0036] Explanation of reference numerals in the attached figures

[0037] 1. Regular hexagonal module; 2. Heat absorption tower; 3. Reusable heliostat array; 31. Heliostat body; 4. Adjustable support structure; 40. Hydraulic telescopic unit; 41. Hydraulic telescopic rod; 42. Telescopic rod motor; 43. Pitch adjustment shaft; 44. Azimuth adjustment shaft; 5. Detachable connector; 51. Male fastener; 52. Female fastener; 6. Drainage ditch. Detailed Implementation

[0038] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0039] The features, structures, or characteristics described above can be combined in any suitable manner in one or more embodiments, and the features discussed in the various embodiments are interchangeable where possible. In the above description, numerous specific details are provided to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details described, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0040] Although relative terms such as "up" and "down" are used in this invention to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the icon's arrangement is flipped so that it is upside down, the component described as "up" will become the component described as "down". Other relative terms such as "high", "low", "top", "bottom", "front", "back", "left", and "right" also have similar meanings. When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0041] In this utility model, the terms "a", "an", "the", "the", and "at least one" are used to indicate the existence of one or more elements / components / etc.; the terms "comprising", "including", and "having" are used to indicate an open-ended meaning of inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.

[0042] According to one aspect of the present invention, reference is made to... Figure 1 As shown, a hexagonal mirror field for a multi-tower multiplex heliostat is provided, comprising:

[0043] At least two heat absorption towers 2;

[0044] Multiple regular hexagonal modules 1 are arranged one-to-one with the heat absorption tower 2. Each regular hexagonal module 1 includes an exclusive heliostat array located in its central region and a reused heliostat array 3 located in its outer region.

[0045] The regular hexagonal modules 1 are spliced ​​together in a honeycomb pattern, and the multiplexed heliostat array 3 of adjacent modules share a common boundary;

[0046] The heat absorption tower 2 is independently set at the geometric center of each regular hexagonal module 1.

[0047] The heat absorption tower 2 is a vertical tower structure, usually located at the center of the mirror field or the geometric center of the modular mirror field. It is used to receive solar energy reflected by the heliostat and convert the light energy into heat energy through the heat absorber at the top of the tower, which ultimately drives the generator set or other heat energy utilization devices.

[0048] A dedicated heliostat array refers to a collection of heliostats that serve only a single absorber tower 2. Located in the central region of each regular hexagonal module 1, it complements the surrounding multiplexed heliostat array 3. The optical paths of all heliostats in the array point only to their respective absorber tower 2 within the hexagonal module 1, and they do not participate in the energy supply to other absorber towers 2. Furthermore, due to the shorter reflection distance (from the center of the hexagonal module 1 to the absorber tower 2), dedicated heliostats have higher optical efficiency and require more stringent tracking accuracy.

[0049] The reusable heliostat array 3 refers to a collection of heliostats that can dynamically serve multiple heat-absorbing towers 2. Located in the outer region of each regular hexagonal module 1, it distributes solar energy to adjacent heat-absorbing towers 2 on demand through intelligent control algorithms. A single-sided heliostat can switch the target tower for reflection based on the sun's position, energy demand, or system commands. Through the honeycomb-like splicing of the regular hexagonal modules 1, the reusable heliostats can provide energy to 1-3 adjacent heat-absorbing towers 2.

[0050] This invention solves the shading problem of traditional radial layouts through a modular hexagonal structure. The honeycomb splicing method allows adjacent modules to share boundary heliostats, thereby increasing the mirror field density. Each absorber tower 2 corresponds to an independent regular hexagonal module 1, and the tower height can be flexibly adjusted according to module requirements, thus breaking the capacity limitation of a single-tower system. Precise light concentration is achieved by dividing the area into exclusive and reuse zones. The central exclusive zone uses a high-density arrangement to ensure basic light concentration efficiency, while the outer reuse zone uses an adjustable support structure to accommodate the reuse needs of multiple towers. Compared with existing technologies, this invention can increase the number of effective heliostats by 15%-20% on the same land area, while reducing shading loss by approximately 12%.

[0051] Multiple heat absorption towers 2 are independently and dispersed at the geometric center of each regular hexagonal module 1, which can avoid the risk of the entire mirror field stopping operation due to the failure of a single heat absorption tower 2. Even if a heat absorption tower 2 has a problem, the other towers can still work normally, ensuring that the mirror field continuously and stably collects solar energy, and improving the fault tolerance and overall stability of the hexagonal mirror field.

[0052] The standardized design of the regular hexagonal module 1 allows the number of modules to be flexibly increased or decreased according to actual needs, thus achieving scale expansion. The modular layout also facilitates the partitioned management of the mirror field. Each regular hexagonal module 1 can be debugged and maintained independently, which can reduce the management difficulty of large-scale mirror fields and improve management efficiency.

[0053] Each hexagonal module 1 contains a dedicated heliostat array and a multiplexed heliostat array 3. The design of the multiplexed heliostat array 3 reduces the overall number of heliostats used, thereby lowering equipment procurement, installation, and maintenance costs. At the same time, the rational mirror field layout optimizes the light reflection path of the heliostats, reducing light transmission loss and improving reflection efficiency.

[0054] The heat absorption tower 2 is located at the center of the regular hexagonal module 1, which allows the light reflected by the heliostat to be projected onto the heat absorber at the top of the tower more evenly and concentratedly. This ensures that the heat absorber fully absorbs light energy, reduces energy loss caused by uneven light distribution, and thus effectively improves the conversion efficiency of light energy to heat energy, thereby improving the energy utilization rate of the entire system.

[0055] In some implementations, the height of each heat-absorbing tower 2 can be designed independently according to the light-concentrating requirements of the corresponding regular hexagonal module 1.

[0056] Specifically, the differentiated design of the height of the heat absorption tower 2 can be achieved in the following ways:

[0057] The light-gathering requirement is calculated based on the optical path difference from the center to the boundary of the heliostat in regular hexagonal module 1. The high tower is suitable for modules with large optical path differences, while the low tower is suitable for modules with small optical path differences.

[0058] The concentration distance threshold for each module was determined by topographic mapping and solar trajectory simulation. The tower height was designed to be 1.2-1.5 times the threshold to ensure concentration efficiency throughout the day.

[0059] The tower adopts a modular tower structure with flange connection interfaces in sections, and the number of tower sections can be increased or decreased according to the concentration requirements.

[0060] In hilly terrain, the tower height is further compensated by taking into account the ground elevation of the module location, so that the receiving surfaces of all heat-absorbing towers 2 are at the same horizontal reference plane.

[0061] Therefore, by dynamically matching tower height with module focusing requirements, the problem of reduced focusing efficiency of edge modules in multi-tower systems due to uniform height can be solved. Specifically, the differentiated tower height design ensures that the reflected light spots from the heliostats of each module are precisely focused onto the receiving surface of the corresponding absorber tower 2, avoiding energy loss due to differences in optical path length. Compared with existing technologies, this invention overcomes the limitation that multi-tower systems must use towers of uniform height, maximizing the energy harvesting efficiency of each module while ensuring the uniformity of the mirror field structure.

[0062] Furthermore, by independently designing the height of the heat absorber tower 2 based on the focusing requirements of the regular hexagonal module 1, the optical characteristics of different modules can be precisely matched. This avoids the problem of insufficient or excessive focusing in some modules due to a uniform height design, thereby improving focusing efficiency and significantly enhancing photothermal conversion performance. On the other hand, different regular hexagonal modules 1 vary in layout, orientation, and environmental conditions. Independently designing the height of the heat absorber tower 2 allows the system to better adapt to complex terrain, climate, and installation conditions, expanding the application range of the photothermal system and enabling efficient operation even in special scenarios such as mountainous areas and windy conditions.

[0063] In some implementations, to enable the height of each heat-absorbing tower 2 to be independently designed according to the focusing requirements of the corresponding hexagonal module 1, the heat-absorbing tower 2 can be designed with an adjustable segmented structure. The segments are securely connected by connecting devices (such as hydraulic telescopic devices, mechanical bolt connection devices, etc.) and equipped with high-precision electric lifting equipment. These devices can precisely adjust the height of the heat-absorbing tower 2 according to the results obtained from previous simulations to adapt to the focusing requirements of the hexagonal module 1.

[0064] In other embodiments, the heliostat body 31 of the heliostat array 3 can be designed to be connected to an adjustable support structure 4, which can adjust the focal length of the mirror according to the terrain slope.

[0065] The adjustable support structure 4 achieves dual adaptability: on the one hand, it compensates for the tilt of the installation surface caused by the terrain slope, ensuring that the mirror normal is always perpendicular to the horizontal plane; on the other hand, it dynamically adjusts the reflection angle according to the orientation differences of the reused heat-absorbing towers 2, ensuring that the focused light spot is accurately projected onto the receivers of different heat-absorbing towers 2. Compared with traditional fixed installation, this invention can significantly improve the deployment flexibility of the mirror field under complex terrain conditions, while solving the problem of focal length misalignment caused by the positional differences of the heat-absorbing towers 2 in multi-tower reuse scenarios. During adjustment, the radius of curvature of the mirror can be matched with the focusing distance of the target heat-absorbing tower 2 in real time, so that the optical efficiency remains optimal in different working modes.

[0066] This utility model does not limit the specific details of the adjustable support structure 4. (See reference) Figure 2 and Figure 3As shown, for example, an adjustable support structure 4 can be designed including:

[0067] The hydraulic telescopic unit 40 includes a hydraulic telescopic rod 41 and a telescopic rod motor 42. The bottom of the hydraulic telescopic rod 41 is fixed to the back of the heliostat body 31. The telescopic rod motor 42 is located on the top of the hydraulic telescopic rod 41 and has an installation interface for connecting to the hydraulic telescopic rod 41.

[0068] The pitch adjustment shaft 43 is connected at one end to the end of the telescopic rod motor 42 that is away from the hydraulic telescopic rod 41;

[0069] An azimuth adjustment shaft 44 is connected to the end of the pitch adjustment shaft 43 away from the telescopic rod motor 42, and the azimuth adjustment shaft 44 is vertically arranged, with an angle of less than 180° between it and the pitch adjustment shaft 43.

[0070] Specifically, the adjustable support structure 4 achieves dynamic control of the mirror's attitude through mechanical adjustment. The hydraulic telescopic rod 41, as the core actuator, is fixed at its bottom to the back of the heliostat body 31 and driven at its top by a telescopic rod motor 42. The hydraulic telescopic rod 41 can employ a single-stage or multi-stage hydraulic cylinder structure, with a preferred working pressure range of 10-20 MPa and a stroke adjustment accuracy of ±1 mm. The telescopic rod motor 42 can be a servo motor or a stepper motor, and the mounting interface uses a flange connection or a universal joint structure. The flange connection surface needs to be anodized to enhance wear resistance. As a preferred embodiment, five sets of adjustable support structures 4 can be set up to achieve mirror pitch and yaw adjustment through coordinated telescopic movement. Furthermore, the adjustment accuracy can be controlled through closed-loop control using displacement sensors, with the positioning error controlled within ±0.1 degrees.

[0071] The hydraulic telescopic mast 41 bears the main support load, ensuring the heliostat remains stable under complex terrain conditions. The telescopic mast motor 42 precisely controls the installation interface angle, ensuring the mirror surface is always aligned with the target absorber tower 2. The dual adjustment mechanisms work in tandem, allowing a single heliostat to adapt to terrain slope changes of ±15° and supporting rapid switching between 3-5 absorber towers 2. Compared to a fixed support structure, the adjustment response time is reduced by 60%, the positioning accuracy is improved by 3 times, and focus adjustment can be completed without interrupting power generation.

[0072] The pitch adjustment axis 43 and the azimuth adjustment axis 44 give the heliostat body 31 the ability to be freely adjusted in both pitch and azimuth dimensions. The pitch adjustment axis 43 can change the tilt angle of the body, while the azimuth adjustment axis 44 can achieve horizontal rotation. The two work together to enable the heliostat to be accurately aligned with the sun's position, greatly improving the efficiency of solar energy collection and providing a more stable and efficient energy collection guarantee for applications such as solar power generation.

[0073] In some implementations, considering the light-focusing effect, the splicing direction of the regular hexagonal module 1 can be designed to include straight-line splicing extending along a first direction, or broken-line splicing extending along the diagonal direction of the hexagon.

[0074] Specifically, horizontal axial straight-line splicing refers to multiple regular hexagonal modules 1 being connected sequentially along one of their horizontal sides to form a linearly arranged mirror field layout. Polygonal splicing, on the other hand, refers to multiple regular hexagonal modules 1 being connected sequentially along their diagonals to form a non-linear expansion layout with a 60° directional variation. As a preferred implementation, straight-line splicing can achieve seamless connection by sharing complete boundaries between modules, while polygonal splicing achieves staggered connection through geometric matching of module vertices with the edges of adjacent modules. Furthermore, rapid alignment between modules can be achieved during the splicing process using a positioning device, which can be a laser rangefinder or a mechanical guiding structure.

[0075] Here, the first direction can be Figure 1 and Figure 5 The X direction (horizontal direction) in the text can also be... Figure 5 The Y direction, which is perpendicular to the X direction, is also the straight connection direction of the heat absorption tower 2.

[0076] When there are two regular hexagonal modules 1, refer to Figure 1 As shown, the two regular hexagonal modules 1 are joined in a straight line extending along the first direction. When there are three regular hexagonal modules 1, refer to... Figure 4 As shown, the three regular hexagonal modules 1 are joined along a broken line extending from the diagonal of the hexagon. When there are four regular hexagonal modules 1, their arrangement is as follows: Figure 5 As shown, the arrangement includes both straight-line splicing extending along the first direction and broken-line splicing extending along the diagonal of the hexagon. When there are five regular hexagonal modules 1, their arrangement is as follows: Figure 6 As shown.

[0077] Therefore, by combining two geometric splicing methods, the problems of unidirectional module orientation and insufficient layout flexibility can be solved. Horizontal axial straight-line splicing maintains the regularity of the linear arrangement of modules, suitable for efficient deployment on flat terrain; hexagonal diagonal zigzag splicing utilizes the rotational symmetry of hexagons, achieving non-linear expansion through 60° directional changes, better adapting to complex terrain conditions. Compared with the existing unidirectional splicing methods, this invention, through geometric complementarity, allows the mirror field to select the optimal splicing path according to actual terrain features, significantly improving the mirror field's adaptability to site conditions. Simultaneously, both splicing methods maintain the honeycomb arrangement characteristics of the regular hexagonal modules 1, ensuring that the optical efficiency of the heliostat array is not affected by the splicing method.

[0078] The positioning device can be implemented in the following ways: Millimeter-wave radar sensors are installed at the six vertices of a regular hexagonal module 1. The radars of adjacent modules calculate their spatial relationships by transmitting and receiving electromagnetic wave signals in specific frequency bands. Alternatively, an infrared laser positioning system can be used, consisting of three sets of laser transmitters and receivers distributed at 120-degree intervals, forming a positioning unit that achieves sub-millimeter positioning accuracy using the time-of-flight ranging principle. A wireless positioning scheme based on UWB (ultra-wideband) technology can also be used, calculating three-dimensional coordinates by measuring the propagation time difference of radio frequency signals. The communication interface between the positioning device and the module control system uses a CAN bus or industrial Ethernet protocol to ensure real-time signal transmission.

[0079] By employing a collaborative mechanism of physical positioning benchmarks and dynamic signal interaction, the positioning efficiency problem during the stitching of honeycomb mirror fields can be effectively solved. The boundary positioning device provides absolute coordinate references for module docking, while the signal interaction system corrects relative position deviations in real time; the combination of these two eliminates the need for manual calibration. Compared to the traditional method of point-by-point measurement using a total station, this invention reduces positioning time from hours to seconds, while improving accuracy to within ±1mm. The positioning process does not require interruption of the mirror field operation; seamless stitching is achieved through automated signal processing, making it particularly suitable for scalable mirror field systems that require frequent layout adjustments.

[0080] To facilitate modular adjustments to the number of reusable heliostats, in some implementations, reference is made to... Figure 7 As shown, a detachable connector 5 can also be designed at the bottom of the reusable heliostat.

[0081] Specifically, the detachable connector 5 can be implemented in one of the following ways:

[0082] The snap-fit ​​connector allows for quick assembly and disassembly via mechanical locking.

[0083] Magnetic connection components utilize the principle of magnetic attraction to achieve positioning and fixation;

[0084] The threaded fastening structure allows for adjustment of connection strength via rotation.

[0085] The interlocking mortise and tenon mechanism relies on geometric matching to ensure installation accuracy.

[0086] The snap-fit ​​connector can be further designed as a bidirectional locking structure, see reference. Figure 7 As shown, it includes a male buckle 51 and a female buckle 52. Displacement is synchronously constrained in both the horizontal and vertical directions. As a preferred embodiment, the surface of the connector may be provided with an anti-corrosion coating to extend its outdoor service life.

[0087] The detachable bottom design allows for flexible adjustment of the heliostat field size according to power generation needs or terrain conditions. Compared with traditional fixed installations, this invention avoids the construction costs of overall heliostat field modification and enables independent addition or removal of individual heliostats; standardized interface design reduces expansion complexity; and reusable connectors reduce equipment replacement waste. This design directly solves the engineering problem of the inability to adjust the heliostat field size as needed, and is particularly suitable for solar power plant projects with undulating terrain or phased construction.

[0088] To further improve light energy focusing efficiency, in some implementations, the mirror arrangement density of the dedicated heliostat array can be designed to be higher than that of the multiplexed heliostat array 3, and the number of dedicated heliostats accounts for 80%-90% of the overall hexagonal mirror field.

[0089] Specifically, the differentiation in mirror arrangement density can be achieved in the following ways: the exclusive heliostats in the central region adopt a honeycomb-like tightly arranged pattern, with the mirror spacing controlled at 0.8-1.2 times the mirror diameter; the peripheral reused heliostats adopt an intermittent arrangement pattern, with the mirror spacing adjusted to 1.5-2 times the mirror diameter. As a preferred implementation, density adjustment can be achieved by changing the installation points of the heliostat support structure, with the central region using an equilateral triangle layout and the peripheral region using a square layout. Furthermore, the 80%-90% proportion range can be achieved through modular splicing, with the area proportion of the exclusive region in each regular hexagonal module 1 controlled at 85%±5%, and the overall proportion maintained through area compensation of the boundary reused regions.

[0090] By establishing a gradient distribution structure of mirror density, higher light-gathering efficiency is achieved in the central region. Specifically, the high-density array of dedicated heliostats increases the light-gathering intensity in the central region by approximately 30%, while the outer region avoids optical interference between mirrors by reducing density. Experimental verification shows that an 80%-90% ratio can maintain energy density in the core region while keeping the shadow loss rate in the outer reused region below 5%. Compared to existing uniform density layouts, this invention improves the overall optical efficiency of the mirror field by 12%-15%, with only a 3%-5% increase in construction cost.

[0091] In addition, refer to Figure 8 As shown, a drainage ditch 6 can also be provided on the perimeter of the regular hexagonal module 1. The drainage ditch 6 is distributed radially along the boundary of the module, and the slope of the ditch is consistent with the slope of the terrain.

[0092] Drainage ditch 6 can be constructed using precast concrete components or on-site casting. The ditch cross-section is trapezoidal or U-shaped, with a depth of 200-300mm. A radial distribution means that drainage ditch 6 extends outwards along the centerlines of each side of the hexagon, with the extension angle maintaining a 15°-30° inclination compared to the splicing angle of adjacent modules. Slope consistency is achieved by measuring the terrain elevation difference with a laser level and then using an adjustable bottom bedding layer. The bedding layer material is selected from graded crushed stone or rubber cushioning. As a preferred implementation, a collection well is installed at the junction of drainage ditch 6, with a filter screen installed at the bottom to prevent debris blockage.

[0093] Therefore, the radial channel structure designed in this invention allows rainwater to naturally converge along the hexagonal boundaries, avoiding the water accumulation dead zones caused by traditional straight channels. The adaptive slope design ensures that the drainage direction is consistent with the natural flow direction of the terrain, reducing the use of artificial drainage facilities. The utilization of hexagonal geometric features enables the drainage system to work synergistically with the mirror field layout, and the improved drainage efficiency of a single module can increase the drainage response speed of the entire mirror field by more than 40%. Compared with the prior art, this invention specifically solves the problem of poor drainage caused by the complex geometry at the module splicing boundaries in honeycomb-shaped mirror fields. Through the combination of structural design and natural terrain, it significantly reduces maintenance costs and improves system reliability.

[0094] It should be understood that this invention is not limited to the detailed structure and arrangement of the components proposed in this invention. This invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of this invention. The embodiments described herein illustrate the best known mode for implementing this invention and will enable those skilled in the art to utilize this invention.

Claims

1. A hexagonal mirror field of a multi-tower multiplexed heliostat, characterized in that, include: At least two heat absorption towers; Multiple regular hexagonal modules are arranged one-to-one with the heat absorption tower. Each regular hexagonal module includes an exclusive heliostat array located in its central region and a shared heliostat array located in its peripheral region. The regular hexagonal modules are spliced ​​together in a honeycomb pattern, and the reusable heliostat arrays of adjacent modules share a common boundary; The heat absorption tower is independently set at the geometric center of each regular hexagonal module.

2. The hexagonal mirror field of a multi-tower, multiplexed heliostat according to claim 1, wherein, The height of each heat absorption tower is independently designed according to the light concentration requirements of the corresponding regular hexagonal module.

3. The hexagonal mirror field of multiple-tower multiplexed heliostat according to claim 1, characterized in that, The heliostat body of the reusable heliostat array is connected to an adjustable support structure, which can adjust the focal length of the mirror according to the terrain slope and the situation of the reusable heat absorption tower.

4. The hexagonal field of multiple-tower, multiplexed heliostat of claim 3, wherein, The adjustable support structure includes: The hydraulic telescopic unit includes a hydraulic telescopic rod and a telescopic rod motor. The bottom of the hydraulic telescopic rod is fixed to the back of the heliostat body. The telescopic rod motor is located at the top of the hydraulic telescopic rod and has an installation interface for connecting to the hydraulic telescopic rod. The pitch adjustment shaft is connected at one end to the end of the telescopic rod motor that is away from the hydraulic telescopic rod, and at the other end to the azimuth adjustment shaft. An azimuth adjustment shaft is connected to the end of the pitch adjustment shaft away from the telescopic rod motor, and the azimuth adjustment shaft is vertically arranged with an angle of less than 180° between it and the pitch adjustment shaft.

5. The hexagonal field of multiple-tower, multiplexed heliostat of claim 1 wherein, The splicing direction of the regular hexagonal module includes straight line splicing extending along the horizontal axis, or broken line splicing extending along the diagonal of the hexagon.

6. The hexagonal field of multiple-tower, multiplexed heliostat of claim 1 wherein, The bottom of the reusable heliostat is equipped with a detachable connector for modularly increasing or decreasing the number of reusable heliostats.

7. The hexagonal field of multiple-tower, multiplexed heliostat of claim 6, wherein, The detachable connector is a snap-fit ​​connector.

8. The hexagonal field of multiple-tower, multiplexed heliostat of claim 1 wherein, The boundary of the multiplexed heliostat array area is equipped with a positioning device, and adjacent regular hexagonal modules achieve rapid positioning through signal exchange between the positioning devices.

9. The hexagonal field of multiple-tower, multiplexed heliostat of claim 1 wherein, The mirror arrangement density of the exclusive heliostat array is higher than that of the multiplex heliostat array, and the number of exclusive heliostats accounts for 80%-90% of the overall hexagonal mirror field.

10. The hexagonal mirror field of a multi-tower Heliostat Field according to any of claims 1-9, characterized in that, The perimeter of the regular hexagonal module is provided with a drainage ditch, the boundary of the regular hexagonal module of the drainage ditch is radially distributed, and the slope of the ditch is consistent with the slope of the terrain.

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