Heliostat structure supporting system

Abstract

The utility model relates to a heliostat structure supporting system, which belongs to the technical field of heliostats and comprises a foundation seat, a platform, a stand column and a supporting truss. The platform is coaxially arranged on the top surface of the foundation seat, a plurality of rotating wheels are mounted at the bottom of the platform, and the platform horizontally rotates on the top surface of the foundation seat through the rotating wheels; the stand column is fixedly installed on the platform, and the supporting truss is installed on the top of the stand column and used for supporting a heliostat. The construction process is simple, the overall stability is high, the deformation is small, and the production difficulty and cost can be reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of heliostats, in particular to a heliostat structure support system. Background Art

[0002] The world currently faces extremely serious energy and environmental challenges, and solar thermal power generation is one of the key technologies to address these challenges. The basic principle of solar thermal power generation is to use a large number of reflectors or concentrators to focus solar radiation around the power station onto a collector area. The collector area heats the working fluid, absorbs the solar radiation, and generates high-temperature steam, which drives a steam turbine generator set to generate electricity, thereby converting solar energy into electricity. Tower-type molten salt solar thermal power generation is one of the technical approaches for solar thermal power generation. A power station consists of three major components: solar thermal collection, thermal storage, and heat-to-power conversion. The former two primarily involve focusing, absorbing, storing, and exchanging heat; the latter includes the heat engine, thermal control, electrical system, water supply, water production, and HVAC. A concentrator field consists of a large number of concentrating devices (such as heliostats) arranged in a specific pattern. Currently, the investment in a concentrator field accounts for over 60% of the total cost of various solar power generation systems, and the average annual efficiency of a concentrator field generally ranges from 58% to 72%. How to reduce the overall cost of the concentrating mirror field and improve the concentrating efficiency of the mirror field through technical means is one of the important issues currently facing the tower molten salt solar thermal power station technology.

[0003] 1. The heliostats in the concentrating fields (heliostat fields) of existing tower-type molten salt solar thermal power stations are generally supported by ground columns and pile foundations for their mirror structure and rotation control devices (slewing reducers). Pile foundations are typically buried at a depth of approximately 2.5 meters, and excavation of the foundation pit is typically performed using specialized machinery, such as long auger drilling or rotary drilling. Columns and foundations come in two main forms: one employs integrated prestressed concrete pipe piles that serve as both the pile foundation and columns, and the other is a combination of cast-in-place concrete pile foundations and steel columns. Due to the deep burial depth of the pile foundations, specialized machinery is required for drilling, resulting in a more complex process and a generally higher cost than shallow foundations.

[0004] 2. Traditional heliostat support structures typically use a torque tube-supported steel truss to support the heliostat. The torque tube-supported steel truss drives the heliostat's rotation. To ensure the overall stability of the support structure, it is necessary to ensure that the various rods of the torque tube-supported steel truss are evenly stressed to minimize overall deformation of the support structure. This increases the difficulty and cost of manufacturing.

[0005] Horizontal rotation of the heliostat is typically achieved through a slewing reducer. This is achieved by controlling the heliostat's rotation angle, which is then adjusted using a sensor for angle measurement. To ensure accurate angle measurement, the slewing reducer typically requires high rotational accuracy, which increases its cost. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides a heliostat structure support system, which has a simple process, high overall stability, small deformation, and reduces production difficulty and cost to a certain extent.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A heliostat structural support system comprises a base, a platform, columns, and a support truss. The platform is coaxially placed on the top surface of the base, and a plurality of rotating wheels are installed at the bottom of the platform. The platform rotates horizontally on the top surface of the base via the rotating wheels. The columns are fixedly mounted on the platform, and the support truss is installed on top of the columns to support the heliostat.

[0009] Furthermore, a circular track coaxial with the base is provided on the top surface of the base; the rotating wheel is placed on the circular track and rotates along the circular track.

[0010] Furthermore, an annular scale is coaxially mounted on the top of the base seat outside the annular track; the minimum scale value of the annular scale is determined according to the measurement accuracy.

[0011] Furthermore, scale values ​​are coaxially engraved in a ring shape on the top of the base seat outside the annular track.

[0012] Furthermore, a camera is installed at the bottom of the column for real-time monitoring of the scale value corresponding to the position of the column after rotation.

[0013] Furthermore, the foundation is an annular concrete foundation.

[0014] Furthermore, the platform also includes an annular platform; a plurality of rotating wheels are evenly distributed around the bottom of the annular platform; two columns are symmetrically installed on the annular platform, and the support trusses are respectively installed on the top of the two columns. The two support trusses are connected by purlins to form a heliostat mounting frame for mounting the heliostat.

[0015] Furthermore, one or more of the rotating wheels are respectively connected to a power rotating device, which drives the rotating wheels to rotate to form driving wheels; the remaining rotating wheels are driven wheels; multiple driving wheels and driven wheels are evenly spaced and symmetrically arranged on the annular platform.

[0016] Furthermore, the power rotation device is a servo motor, a hydraulic motor or a pneumatic motor.

[0017] Furthermore, the support system also includes a pitch rotation device; the pitch rotation device is installed on the top of the column, the outer end of the telescopic rod of the pitch rotation device is connected to the support truss, and the pitch rotation device drives the telescopic rod to extend and retract to drive the support truss to pitch and rotate.

[0018] Beneficial effects of the utility model:

[0019] The heliostat structure support system of the utility model realizes horizontal rotation of the heliostat structure by rotating the platform on the base. It has a simple structure, ingenious design, simple construction process, high overall stability, small deformation, and reduces production difficulty and cost to a certain extent.

[0020] The foundation seat of the utility model is fixed in the form of a shallow foundation and is a concrete base. Compared with the pile foundation form, the construction process of the utility model is simple, the cost is low and the installation efficiency is high.

[0021] In the support system of the present invention, the heliostat is symmetrically fixed to the platform by two columns. While eliminating the torque tube in the traditional heliostat support structure, the forces on each part of the heliostat support system are more uniform and reasonable, which can reduce the overall deformation of the support system and achieve stable horizontal rotation, thereby facilitating the control of the heliostat surface shape and improving the heliostat's focusing efficiency.

[0022] The utility model sets a platform on the ground to rotate horizontally relative to the base, and a ring scale is provided on the base. A camera is installed at the bottom of the column to monitor the scale value corresponding to the position of the column after rotation in real time. The horizontal rotation angle of the entire heliostat structure can be measured. The utility model not only reduces costs but also improves the accuracy of angle measurement, thereby ensuring the accuracy of mirror field control and improving the focusing efficiency of the heliostat.

[0023] The rotating wheel of the utility model rotates along the annular track, ensuring stable movement of the rotating wheel while also ensuring that it moves along a predetermined rotation path. In addition, the driving wheel and the driven wheel of the utility model are evenly spaced, which can reduce costs while meeting the horizontal rotation of the entire support system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an overall three-dimensional schematic diagram of the heliostat structure support system of the utility model;

[0025] Figure 2 This is a schematic diagram of the rotation of the heliostat structure support system of the utility model;

[0026] Figure 3 This is a front view of the heliostat structure support system of the utility model;

[0027] Figure 4It is a schematic diagram of the platform in this utility model.

[0028] Among them: 1-base, 1.1-annular track, 2-platform, 2.1-annular platform, 2.2-rotating wheel, 3-column, 4-support truss, 5-heliostat. DETAILED DESCRIPTION

[0029] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] Terms such as "upper," "lower," "left," "right," "inner," "outer," "front," "back," "head," and "tail" in this application are based on the directions or positions shown in the accompanying drawings. The corresponding positions may vary depending on the drawings, and should not be construed as limiting the scope of protection.

[0031] In this utility model, the terms "installed," "connected," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, integral connection, mechanical connection, electrical connection, or mutual communication. They can also refer to direct connection or indirect connection through an intermediate medium. They can also refer to internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] This embodiment describes a heliostat structure support system, which is used to support a heliostat. It uses a simple structure to achieve horizontal rotation of the heliostat structure, and has good stability, low cost, and convenient maintenance.

[0033] like Figures 1 to 3 As shown, the support system includes a base 1, a platform 2, columns 3, and a support truss 4. Platform 2 is coaxially placed on the top surface of base 1 and can rotate horizontally on base 1. Column 3 is fixed to platform 2, and support truss 4 is installed on top of column 3 to support heliostat 5.

[0034] The base 1 of this embodiment is an annular concrete base. This base can be fixed in a pre-set position using precast concrete components or cast-in-place concrete in a shallow foundation. This construction process is simple, cost-effective, and installation is efficient. A coaxial annular track 1.1 is provided on the top surface of the base 1. This track 1.1 can be an annular groove made of annular channel steel or an annular guide rail, etc., serving as the horizontal rotation path for the heliostat 5. Furthermore, a circular scale (the minimum scale value can be determined based on measurement accuracy requirements) is coaxially mounted on the top of the base 1 outside the annular track 1.1. The scale's markings provide a clear understanding of the heliostat's horizontal rotation angle, thereby improving the accuracy of angle measurement, ensuring the precision of the heliostat's field control, and enhancing the heliostat's focusing efficiency. In another embodiment, the scale can be omitted, with the scale values ​​engraved directly on the top of the base 1 outside the annular track 1.1.

[0035] like Figure 4 As shown, the platform 2 of this embodiment includes an annular platform 2.1 and rotating wheels 2.2. A plurality of rotating wheels 2.2 are mounted around the bottom of the annular platform 2.1. Preferably, the plurality of rotating wheels 2.2 are evenly spaced and placed on the annular track 1.1. Driven by a power rotation device, the rotating wheels 2.2 drive the platform 2 to rotate along the annular track 1.1.

[0036] In another embodiment, the annular platform 2.1 in the platform 2 can be replaced with another platform shape suitable for the working conditions, such as a square or polygonal platform, to which equipment required by the working conditions can be installed. Multiple rotating wheels 2.2 are arranged in a ring and mounted on the bottom of the platform 2. They drive the platform 2 to rotate along the annular track 1.1 on the base 1, thereby adjusting the horizontal angle of the heliostat 5.

[0037] In this embodiment, the multiple rotating wheels 2.2 can be divided into driving wheels and driven wheels. Specifically, one or m (1 < m < number of rotating wheels 2.2) rotating wheels 2.2 are each connected to one or m power rotation devices. The power rotation devices drive the rotating wheels 2.2 to rotate, forming the driving wheels, while the remaining rotating wheels 2.2 are driven wheels. The power rotation devices are mounted on the platform 2 and provide driving force for the rotating wheels 2.2. The power rotation devices drive the rotating wheels 2.2 to rotate, thereby achieving horizontal rotation of the platform 2, thereby driving the columns 3, support trusses 4, and heliostats 5 above it to rotate horizontally. The power rotation devices in this embodiment can be servo motors, hydraulic motors, or pneumatic motors. To ensure stable rotation of the platform 2, the m driving wheels are symmetrically arranged below the annular platform 2.1 and are evenly spaced from the driven wheels. This provides uniform rotational power to the entire support system while also reducing costs.

[0038] The installation method of the rotating wheel 2.2 serving as the driving wheel in this embodiment may adopt, but is not limited to, the following structure: a horizontal rotating shaft is provided in the middle of the rotating wheel 2.2, and transmission gears are provided at both ends of the horizontal rotating shaft. A horizontal rotating gear is installed at the output shaft end of the power rotating device. The horizontal rotating gear extends to the bottom of the annular platform 2.1 and is meshed with the transmission gears at both ends of the horizontal rotating shaft. The power rotating device drives the rotating wheel 2.2 to rotate along the annular track 1.1 through meshing transmission.

[0039] In this embodiment, two columns 3 are mounted symmetrically on the annular platform 2.1, on either side of the central axis of the platform 2. Support trusses 4 are mounted on top of each column 3. These two support trusses 4 are connected by purlins to form a heliostat mounting frame, upon which multiple mirrors of a heliostat 5 are sequentially mounted. A pitch rotation mechanism is also mounted on the top of the columns 3. The outer ends of the telescopic rods of the pitch rotation mechanism are connected to the support trusses 4. Driven by the pitch rotation mechanism, the telescopic rods extend and retract, driving the support trusses 4 in pitch, thereby adjusting the pitch angle of the heliostat structure. The pitch rotation mechanism of this embodiment can be driven by a motor or an electric actuator.

[0040] A camera is installed at the bottom area of ​​a column 3. The camera is used to monitor the scale value corresponding to the position of the column 3 after rotation in real time, thereby realizing the measurement of the horizontal rotation angle of the overall structure of the heliostat.

[0041] Although the principles of the present invention have been described in detail above in conjunction with the preferred embodiments of the present invention, those skilled in the art should understand that the above embodiments are merely illustrative of the implementation of the present invention and are not intended to limit the scope of the present invention. The details in the embodiments do not constitute a limitation on the scope of the present invention. Without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformations and simple substitutions based on the technical solutions of the present invention fall within the scope of protection of the present invention.

Claims

1. A heliostat structure support system, characterized in that: The support system comprises a base (1), a platform (2), a column (3) and a support truss (4); the platform (2) is coaxially placed on the top surface of the base (1), and a plurality of rotating wheels (2.2) are installed at the bottom of the platform (2), and the platform (2) rotates horizontally on the top surface of the base (1) via the rotating wheels (2.2); the column (3) is fixed on the platform (2), and the support truss (4) is installed on the top of the column (3) for supporting the heliostat (5).

2. The heliostat structure support system according to claim 1, characterized in that: An annular track (1.1) coaxial with the base (1) is provided on the top surface of the base (1); the rotating wheel (2.2) is placed on the annular track (1.1) and rotates along the annular track (1.1).

3. The heliostat structure support system according to claim 2, characterized in that: An annular scale is coaxially mounted on the top of the base seat (1) outside the annular track (1.1); the minimum scale value of the annular scale is determined according to measurement accuracy.

4. The heliostat structure support system according to claim 2, wherein: Scale values ​​are coaxially engraved in a ring shape on the top of the base seat (1) outside the annular track (1.1).

5. The heliostat structure support system according to claim 3 or 4, characterized in that: A camera is installed at the bottom of the column (3) for real-time monitoring of the scale value corresponding to the position of the column (3) after rotation.

6. The heliostat structure support system according to claim 1, characterized in that: The base (1) is an annular concrete base.

7. The heliostat structure support system according to claim 1, wherein: The platform (2) further comprises an annular platform (2.1); a plurality of rotating wheels (2.2) are evenly distributed around the bottom of the annular platform (2.1); two upright posts (3) are symmetrically mounted on the annular platform (2.1); the supporting trusses (4) are respectively mounted on the tops of the two upright posts (3); the two supporting trusses (4) are connected via purlins to form a heliostat mounting frame for mounting the heliostat (5).

8. The heliostat structure support system according to claim 7, characterized in that: One or more rotating wheels (2.2) are respectively connected to a power rotating device, which drives the rotating wheels (2.2) to rotate, forming driving wheels; the remaining rotating wheels (2.2) are driven wheels; the plurality of driving wheels and the driven wheels are evenly spaced and symmetrically arranged on the annular platform (2.1).

9. The heliostat structure support system according to claim 8, characterized in that: The power rotation device is a servo motor, a hydraulic motor or a pneumatic motor.

10. The heliostat structure support system according to claim 1, wherein: The support system further comprises a pitch rotation device; the pitch rotation device is mounted on the top of the column (3); the outer end of the telescopic rod of the pitch rotation device is connected to the support truss (4); the pitch rotation device drives the telescopic rod to extend and retract, thereby driving the support truss (4) to pitch and rotate.

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