Heliostat body

Abstract

A heliostat body comprises a reflecting surface, the area of which is larger than or equal to 32 m < 2 > and smaller than or equal to 45 m < 2 >; the reflecting surface is formed by combining a plurality of reflecting surface units, and the area of the reflecting surface is the sum of the areas of all the reflecting surface units; the plurality of secondary beams are arranged in parallel at intervals and are used for supporting the reflecting surface; at least two secondary beams are supported below each reflecting surface unit; any reflecting surface unit serves as a characteristic reflecting surface unit, each auxiliary beam supported below the characteristic reflecting surface unit serves as a characteristic auxiliary beam, the distance between every two adjacent characteristic auxiliary beams ranges from 36.5% L to 76.5% L, and L is the width of the characteristic reflecting surface unit in the direction perpendicular to the extending direction of the characteristic auxiliary beams. By optimizing the area of the reflecting surface of the heliostat body and the distance between the two adjacent secondary beams under the same reflecting surface unit, the number of the secondary beams can be effectively reduced while the surface shape of the reflecting surface of the heliostat body is ensured, so that the steel consumption can be reduced, and the cost of the heliostat is reduced.

Description

Technical Field

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

[0002] A heliostat is a device used to focus sunlight onto a central heat exchanger (absorber) mounted on the top of a heat absorption tower. It utilizes solar thermal energy by heating the fluid inside. The attitude (orientation) of the reflecting surface in the heliostat can be adjusted as the position of the sun changes, so that the reflecting surface of the heliostat can always reflect sunlight onto the absorber, that is, the heliostat can track the sun.

[0003] The sun-tracking function of a heliostat is achieved by adjusting the pitch angle and azimuth angle of the reflecting surface in the heliostat body. The azimuth angle adjustment is generally achieved by using an azimuth angle driving device to drive the reflecting surface in the heliostat to rotate with a rotation axis perpendicular to the ground as the rotation axis, and the pitch angle adjustment is generally achieved by using a pitch angle driving device to drive the reflecting surface in the heliostat to rotate with a pitch angle rotation axis parallel to the ground as the rotation axis.

[0004] In addition, the reflective surface in the heliostat body needs to have a certain light convergence ability while reflecting sunlight. Therefore, the reflective surface of the heliostat body is a curved surface with a specific curvature. Therefore, the accuracy of the reflective surface of the heliostat has an important influence on the utilization rate of solar energy by the heliostat. In the prior art, in order to obtain a higher-precision reflective surface shape of the heliostat, more support beams are required, which makes the cost of the heliostat higher. Utility Model Content

[0005] In view of this, an object of the utility model is to provide a heliostat body, which optimizes the area of ​​the reflecting surface and the number and layout of the sub-beams used to support the reflecting surface, thereby ensuring that the reflecting surface of the heliostat has a high precision and can effectively reduce the amount of steel used and reduce the cost of the heliostat.

[0006] A heliostat body, comprising: a reflective surface for reflecting light, wherein the area of ​​the reflective surface is greater than or equal to 32m 2 , less than or equal to 45m 2; The reflecting surface is composed of a plurality of reflecting surface units, and the area of ​​the reflecting surface is the sum of the areas of all the reflecting surface units; a plurality of mutually spaced and parallel sub-beams are used to support the reflecting surface, and each of the sub-beams is directly or indirectly connected to the reflecting surface; at least two sub-beams are supported below each reflecting surface unit; any one of the reflecting surface units is taken as a characteristic reflecting surface unit, and each of the sub-beams supported below the characteristic reflecting surface unit is taken as a characteristic sub-beam, and the spacing between two adjacent characteristic sub-beams is 36.5%L-76.5%L, wherein L is the width of the characteristic reflecting surface unit in a direction perpendicular to the extension direction of the characteristic sub-beam.

[0007] As an improvement of a heliostat mirror body described in the utility model, the reflecting surface is rectangular, and the secondary beam is parallel to one side of the reflecting surface.

[0008] As an improvement of the heliostat mirror body described in the utility model, the thickness of the reflective surface unit is greater than or equal to 3.8 mm and less than or equal to 4.2 mm

[0009] As an improvement of a heliostat body described in the utility model, the distance between any two adjacent characteristic sub-beams is greater than or equal to 900 mm and less than or equal to 1100 mm.

[0010] As an improvement of the heliostat body described in the utility model, the number of the secondary beams is 8.

[0011] As an improvement of the heliostat body described in the utility model, the reflecting surface is a glass reflecting mirror.

[0012] As an improvement of the heliostat body described in the utility model, it also includes a main beam, each of the sub-beams is fixedly connected to the main beam through a corresponding central support fixed on the main beam, and the extension direction of the main beam is perpendicular to the extension direction of the sub-beam.

[0013] As an improvement of the heliostat body described in the utility model, each of the secondary beams should also be provided with a first support beam and a second support beam, respectively, the first support beam and the second support beam are respectively arranged on both sides of the extension direction of the main beam, the first end of the first support beam is connected to the corresponding central support, the second end of the first support beam is connected to the corresponding secondary beam, the first end of the second support beam is connected to the corresponding central support, and the second end of the second support beam is connected to the corresponding secondary beam.

[0014] As an improvement of a heliostat body described in the utility model, all the sub-beams are divided into at least two sub-beam groups; all the reflecting surface units supported on the same sub-beam group in the reflecting surface constitute a reflecting surface unit group; a combination formed by each sub-beam group and the reflecting surface unit group supported by it is a reflecting surface unit module; at least one sub-beam in each reflecting surface unit module is connected to at least one sub-beam in at least one adjacent reflecting surface unit module through a support member, and the support member is used to maintain the relative position between the reflecting surface unit modules connected thereto.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The surface shape accuracy of the reflective surface of the heliostat body can be decomposed into the accuracy along the extension direction of the sub-beam and the accuracy perpendicular to the extension direction of the sub-beam. The sub-beam can provide good support for the reflective surface in the direction along which it extends, but in the direction perpendicular to the extension direction of the sub-beam, the reflective surface is not supported. Therefore, the fewer the number of sub-beams, the larger the gap between adjacent sub-beams, and the larger the area of ​​the reflective surface that is not supported. The reflective surface that loses effective support can only rely on its own rigidity to maintain its surface shape. Therefore, if the gap between adjacent sub-beams is too large, the surface shape accuracy of the reflective surface of the heliostat will decrease, and the requirements of focusing and heat collection will not be met. In order to maintain the surface shape accuracy of the reflective surface of the heliostat body, increasing the number of sub-beams too much will increase the cost of the heliostat. The utility model optimizes the area of ​​the reflective surface of the heliostat body and the spacing between two adjacent sub-beams under the same reflective surface unit, while ensuring the surface shape of the reflective surface of the heliostat body, it can effectively reduce the number of sub-beams, thereby reducing the amount of steel used and reducing the cost of the heliostat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the heliostat mirror structure provided by an embodiment of the utility model;

[0018] In the figure: 1-main beam, 2-reflecting surface, 3-first supporting beam, 4-center support, 5-secondary beam, 6-second supporting beam, 7-supporting member. DETAILED DESCRIPTION

[0019] The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0020] Certain directional terms used in the following description of the drawings, such as "inside", "outside", "upper", "lower", "top", "bottom" and other directional terms will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. Unless otherwise specified, the directional terms described in this specification are basically in accordance with the conventional directions understood by those skilled in the art.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0023] Reference Figure 1 As shown, a heliostat mirror body includes: a reflecting surface 2 for reflecting light, and the area of ​​the reflecting surface 2 is greater than or equal to 32m 2 , less than or equal to 45m 2 ; The reflecting surface 2 is composed of a plurality of reflecting surface units, and the area of ​​the reflecting surface 2 is the sum of the areas of all reflecting surface units; a plurality of mutually spaced and parallel sub-beams 5 are used to support the reflecting surface 2, and each sub-beam 5 is directly or indirectly connected to the reflecting surface 2; at least two sub-beams 5 are supported below each reflecting surface unit; any one reflecting surface unit is taken as a characteristic reflecting surface unit, and each sub-beam supported below the characteristic reflecting surface unit is taken as a characteristic sub-beam, and the spacing between two adjacent characteristic sub-beams is 36.5%L-76.5%L, wherein L is the width of the characteristic reflecting surface unit in the direction perpendicular to the extension of the characteristic sub-beam. Specifically, in this embodiment, the reflecting surface 2 adopts a glass reflecting mirror, and the reflecting surface 2 is composed of 12 reflecting surface units. When the total area of ​​the heliostat body 1 is 32-45 square meters, the spacing between two adjacent characteristic sub-beams is set to 36.5%L-76.5%L, which can meet the requirements of the heliostat body for the surface shape accuracy of the reflecting surface 2, and at the same time, the number of sub-beams 5 can be minimized to reduce costs. In addition, it should be noted that when the reflecting surface 2 of the heliostat is formed by combining a plurality of reflecting surface units, there will be gaps between adjacent reflecting surface units. When calculating the area of ​​the reflecting surface 2 , the gaps between adjacent reflecting surface units are not included in the area of ​​the reflecting surface 2 .

[0024] Preferably, in this embodiment, the reflective surface 2 is rectangular, and the sub-beam 5 is parallel to one side of the reflective surface 2. Specifically, in this embodiment, the reflective surface unit is also rectangular, and all the reflective surface units constituting the reflective surface 2 are arranged in three rows and four columns, that is, each row (perpendicular to the extension direction of the sub-beam 5) has four reflective surface units, and each column (parallel to the extension direction of the sub-beam 5) has three reflective surface units.

[0025] Preferably, in this embodiment, the thickness of the reflective surface unit is greater than or equal to 3.8 mm and less than or equal to 4.2 mm. In addition, there are 8 sub-beams 5 in the heliostat body, and the distance between any two adjacent characteristic sub-beams is greater than or equal to 900 mm and less than or equal to 1100 mm.

[0026] Furthermore, the heliostat body provided in this embodiment also includes a main beam 1, each sub-beam 5 is fixedly connected to the main beam 1 via a corresponding central support 4 fixed on the main beam 1, and the extension direction of the main beam 1 is perpendicular to the extension direction of the sub-beam 5.

[0027] Preferably, in this embodiment, each sub-beam 5 is also provided with a first support beam 3 and a second support beam 6, respectively. The first support beam 3 and the second support beam 6 are respectively arranged on both sides of the extension direction of the main beam 1. The first end of the first support beam 3 is connected to the corresponding center support 4, the second end of the first support beam 3 is connected to the corresponding sub-beam 5, the first end of the second support beam 6 is connected to the corresponding center support 4, and the second end of the second support beam 6 is connected to the corresponding sub-beam 5.

[0028] In particular, in this embodiment, all the sub-beams 5 in the heliostat body are divided into at least two sub-beam groups; all the reflective surface units supported on the same sub-beam group in the reflective surface 2 form a reflective surface unit group; the combination formed by each sub-beam group and the reflective surface unit group supported by it is a reflective surface unit module; at least one sub-beam in each reflective surface unit module is connected to at least one sub-beam in at least one adjacent reflective surface unit module through a support member 7, and the support member 7 is used to maintain the relative position between the reflective surface unit modules connected thereto. Specifically, as Figure 1 As shown, in this embodiment, all the reflective surface units constituting the reflective surface 2 are arranged in three rows and four columns, wherein the combination formed by the three reflective surface units in each column and the two corresponding sub-beams 5 is a reflective surface unit module described herein, that is, in this embodiment, a total of four reflective surface unit modules are included. For a reflective surface unit module at an edge position, it has only one adjacent reflective surface unit module, and for a reflective surface unit module at a non-edge position, it has two adjacent reflective surface unit modules.

[0029] Since the heliostat is used in the wild environment, it will be subjected to the force exerted on the reflecting surface 2 of the heliostat by external forces such as wind in nature, causing the reflecting surface unit modules in the heliostat body to shake. In this embodiment, by connecting at least one sub-beam in each reflecting surface unit module with at least one sub-beam in at least one adjacent reflecting surface unit module through a support member 7, and using the support member 7 to maintain the relative positions of the reflecting surface unit modules connected by the support member 7, it is possible to avoid collision between adjacent reflecting surface unit modules, and further avoid damage to the glass reflecting mirror serving as the reflecting surface 2.

[0030] The above describes the specific embodiments of the present application. It should be understood that the present application is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does 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 can be arbitrarily combined with each other.

Claims

1. A heliostat body, characterized in that: include: A reflective surface, used to reflect light, the area of ​​the reflective surface being greater than or equal to 32m 2 , less than or equal to 45m 2 ; The reflecting surface is composed of a plurality of reflecting surface units, and the area of ​​the reflecting surface is the sum of the areas of all the reflecting surface units; A plurality of sub-beams spaced apart from each other and arranged in parallel, used for supporting the reflecting surface, each of the sub-beams being directly or indirectly connected to the reflecting surface; At least two of the sub-beams are supported below each of the reflective surface units; Any one of the reflecting surface units is taken as a characteristic reflecting surface unit, each of the sub-beams supported below the characteristic reflecting surface unit is taken as a characteristic sub-beam, and the spacing between two adjacent characteristic sub-beams is 36.5% L-76.5% L, wherein L is the width of the characteristic reflecting surface unit in a direction perpendicular to the extension direction of the characteristic sub-beam.

2. A heliostat body according to claim 1, characterized in that: The reflecting surface is rectangular, and the auxiliary beam is parallel to one side of the reflecting surface.

3. A heliostat body according to claim 2, characterized in that: The thickness of the reflective surface unit is greater than or equal to 3.8 mm and less than or equal to 4.2 mm.

4. A heliostat body according to claim 3, characterized in that: The distance between any two adjacent characteristic sub-beams is greater than or equal to 900 mm and less than or equal to 1100 mm.

5. The heliostat body according to claim 1, characterized in that: The number of the secondary beams is 8.

6. The heliostat body according to claim 1, characterized in that: The reflecting surface is a glass reflecting mirror.

7. The heliostat body according to claim 1, characterized in that: It also includes a main beam, each of the auxiliary beams is fixedly connected to the main beam through a corresponding central support fixed on the main beam, and the extension direction of the main beam is perpendicular to the extension direction of the auxiliary beam.

8. The heliostat body according to claim 7, characterized in that: Each of the sub-beams should also be provided with a first support beam and a second support beam, respectively. The first support beam and the second support beam are respectively arranged on both sides of the extension direction of the main beam, the first end of the first support beam is connected to the corresponding central support, the second end of the first support beam is connected to the corresponding sub-beam, the first end of the second support beam is connected to the corresponding central support, and the second end of the second support beam is connected to the corresponding sub-beam.

9. A heliostat body according to any one of claims 1 to 8, characterized in that: Dividing all the sub-beams into at least two sub-beam groups; All the reflecting surface units in the reflecting surface supported on the same sub-beam group form a reflecting surface unit group; The combination formed by each of the sub-beam groups and the corresponding reflecting surface unit group supported by it is a reflecting surface unit module; At least one of the sub-beams in each of the reflecting surface unit modules is connected to at least one of the sub-beams in at least one adjacent reflecting surface unit module via a support member, and the support member is used to maintain the relative positions between the reflecting surface unit modules connected thereto.

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