Ring purlin type all-directional force bearing heliostat support

Abstract

The invention discloses a ring purlin type all-directional force bearing heliostat support which comprises a purlin group and at least two ring seats sequentially sleeved in the radial direction. The purline group comprises a first purline group and a second purline group; the first purline group comprises a plurality of first purlines which are arranged along the circumferential direction and are fixedly connected between the adjacent ring seats; the second purline group comprises a plurality of second purlines which are arranged along the circumferential direction and are fixedly connected between the adjacent ring seats; the first purline group and the second purline group are arranged in parallel along the axial direction of the ring seat; the external force in different directions of the bearing surface can be converted into the tension component of the purline, the tensile property of steel is adapted, and higher strength is needed different from the pressure bearing of a web member of a truss, so that the use amount of the steel can be reduced, finally, the weight of the mounting seat is reduced, the light weight is realized, the structure is simpler, and the cost is lower. Compared with a traditional truss structure, material cost is saved, operation energy consumption can be reduced, and manufacturing and using cost is saved.

Description

Technical Field

[0001] The present invention relates to a support device for a heliostat, and particularly to a heliostat bracket with a ring purlin type and all-round load-bearing capacity. Background Art

[0002] A heliostat is a device for collecting and utilizing solar radiant energy, which is used to track the sun and reflect sunlight to a certain fixed position for utilization. In the prior art, a heliostat includes a reflecting surface, a support driving device, and an automatic tracking control system. Among them, the reflecting surface is composed of multiple mirror surfaces arranged separately, with a relatively large volume and a relatively tight installation; therefore, the mounting seat of the support driving device needs to have strong supporting ability. In the prior art, the heliostat is installed on a truss support frame (seat). Since the heliostat is a relatively large planar structure, its support structure needs to have a large wind load resistance ability. To ensure the support strength, the overall volume of the truss structure is large and relatively heavy, so the steel consumption and weight are relatively large, and thus the cost is relatively high; at the same time, the structure of the truss itself is relatively practical for bearing static loads, but the heliostat belongs to a dynamic structure and is affected by the natural environment (wind direction), and the stress state is relatively complex. For the support of the truss structure, only by increasing the strength of the structure itself can the bearing capacity be improved. Therefore, the weight of the support is relatively large, which also increases the overall weight of the heliostat system, thereby increasing the driving load and ultimately increasing the operation cost.

[0003] Therefore, it is necessary to improve the existing mounting seat of the heliostat, so that the weight of the mounting seat can be reduced and a targeted mechanical design can be carried out, so that the overall mounting seat is lightweight and the structure is relatively simple. Compared with the traditional truss structure, it not only saves material costs, but also reduces the operation energy consumption and saves the manufacturing and use costs. Summary of the Invention

[0004] In view of this, the present invention provides a heliostat bracket with a ring purlin type and all-round load-bearing capacity, which is lightweight and has a targeted mechanical design, so that the overall mounting seat is lightweight and the structure is relatively simple. Compared with the traditional truss structure, it not only saves material costs, but also reduces the operation energy consumption and saves the manufacturing and use costs.

[0005] The heliostat bracket with a ring purlin type and all-round load-bearing capacity of the present invention includes a purlin group and at least two ring seats that are sequentially sleeved radially outside.

[0006] The purlin group includes a first purlin group and a second purlin group. The first purlin group includes a plurality of first purlins arranged along the circumferential direction and fixedly connected between adjacent ring seats; the second purlin group includes a plurality of second purlins arranged along the circumferential direction and fixedly connected between adjacent ring seats.

[0007] The ring base has a set dimension in the axial direction, and the first purlin group and the second purlin group are arranged side by side along the axial direction of the ring base.

[0008] Furthermore, the first purlin or the second purlin is inclined to one side in the radial direction;

[0009] Or, at least part of the first purlins are inclined to one side in the radial direction, and at least part of the second purlins are inclined to the other side in the radial direction.

[0010] Furthermore, adjacent first purlins or / and adjacent second purlins are inclined in a manner with opposite inclination directions in the radial direction.

[0011] Furthermore, when the first purlin and the second purlin are in the same axial plane, they are integrally formed between the first purlin and the second purlin, and are hollowed out therebetween.

[0012] Furthermore, the number of the ring bases is set. The innermost one in the radial direction is the central ring base, followed by the intermediate ring base and the outer ring base from inside to outside. The first purlins and the second purlins are fixedly arranged in a segmented manner corresponding to adjacent ring bases, or are integrally fixed to the central ring base, the intermediate ring base and the outer ring base in sequence.

[0013] Furthermore, pre-tightening forces are respectively applied to the first purlins and the second purlins.

[0014] Furthermore, the ring base is circular, the first purlins and the second purlins are segmented, and the first purlins and the second purlins between adjacent ring bases are tangent to the ring base on the radial inner side; or, the first purlins and the second purlins are integral, and the first purlin is tangent to the central ring base;

[0015] Or, the ring base is polygonal, the first purlins and the second purlins are segmented, and the first purlins and the second purlins between adjacent ring bases are fixedly attached to the sides of the polygon of the ring base on the radial inner side; or, the first purlins and the second purlins are integral and are fixedly attached to the sides of the polygon of the central seat ring.

[0016] Furthermore, the axial dimension of the ring base gradually decreases from inside to outside, and one ends of all the ring bases corresponding to the heliostat are aligned with each other to adapt to the plane where the heliostat is located. The first purlins are fixed to one ends of the ring bases corresponding to the heliostat to form an installation surface; the second purlins are inclined along the axial direction to adapt to the axial dimension of the ring base.

[0017] Furthermore, connecting pieces for installing heliostat mirrors are arranged on the first purlins.

[0018] Further, the first purlin is arranged to be inclined in the axial direction, and the second purlin is arranged to be inclined in the axial direction and the inclination direction is opposite to that of the first purlin.

[0019] Further, the purlin group further comprises face purlins and back purlins, the face purlins are sequentially fixedly connected from the inside to the outside along the radial direction to one end of all the ring seats facing the heliostat, and the face purlins are arranged in a circumferential direction to form a mounting surface; the back purlins are sequentially fixedly connected from the inside to the outside along the radial direction to one end of all the ring seats facing away from the heliostat, and the back purlins are arranged in a circumferential direction to one end;

[0020] The surface purlin is provided with a connecting piece for installing the heliostat mirror.

[0021] The beneficial effects of the present invention are as follows: the ring-purlin type all-round load-bearing heliostat support of the present invention adopts a ring seat and a structure combined with purlins, and has a targeted mechanical design; the present structure is different from a static load-bearing structure, and is a dynamic load-bearing structure that follows the movement of the sun. When bearing, external forces at different directions of the bearing surface can be converted into tensile force components of the purlins, which is adapted to the tensile properties of steel. Unlike the web members of the truss, which are subjected to compression and require greater strength, the amount of steel used can be reduced, and ultimately the weight of the mounting seat of the present invention is reduced, and lightweight and relatively simple structure are achieved. Compared with the traditional truss structure, not only material costs are saved, but also operating energy consumption can be reduced, and manufacturing and use costs are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the plane structure of the present invention (the purlins are arranged radially);

[0024] Figure 2 for Figure 1 Side view of the cross section (also used as Figure 3 and Figure 4 side cross-sectional view);

[0025] Figure 3 It is a schematic diagram of the plane structure of the present invention (the purlins are arranged in sections and tilted);

[0026] Figure 4 It is a schematic diagram of the plane structure of the present invention (the purlins are arranged in an integral and inclined manner);

[0027] Figure 5 It is a side cross-sectional view of the purlins arranged in an axially inclined manner;

[0028] Figure 6 The figure is a schematic diagram of the first purlin and the second purlin formed in one piece. DETAILED DESCRIPTION

[0029] As shown in the figure: The heliostat bracket with ring purlins for omnidirectional load-bearing in this embodiment includes a ring base and a purlin group. The ring bases are at least two and are arranged coaxially and externally in sequence;

[0030] The purlin group includes a first purlin group and a second purlin group. The first purlin group includes a plurality of first purlins arranged along the circumferential direction and fixedly connected between adjacent ring bases; the second purlin group includes a plurality of second purlins arranged along the circumferential direction and fixedly connected between adjacent ring bases;

[0031] The ring base has a set size in the axial direction. The first purlin group and the second purlin group are arranged side by side along the axial direction of the ring base, as Figure 2 shown;

[0032] The ring base of the present invention is a ring structure, not limited to a circular ring structure, and can be a multi-sided (including triangles and above) ring structure. The radial direction refers to the diameter direction of a circle or the radial direction of the circumscribed circle (or the inscribed circle) of a polygon structure, which will not be elaborated here;

[0033] The ring base and the purlins are generally made of steel, which will not be elaborated here; the first purlins and the second purlins fixed to the ring base can be fixed by welding, riveting or can be detachably fixed by bolts, etc., which will not be elaborated here; the purlins can be radially distributed in a radial shape or can be inclined, and both can achieve the purpose of the invention; with the layout structure of ring purlins, when the ring base and the purlins bear external forces, torque and direct gravity components will be generated. The ring purlin structure will convert most of the torque and gravity components into tensile forces on the purlins. According to the characteristic that steel has strong tensile strength, the overall load-bearing capacity of the mounting seat is improved. Compared with a truss with the same load-bearing capacity, the overall weight of the steel is greatly reduced;

[0034] The first purlins and the second purlins can be arranged radially in a radial shape with the innermost ring base as the center, as Figure 1 shown, and it can also achieve the effect of converting torque (possessed by a dynamic bracket) and gravity components into tensile forces, but the conversion efficiency is different from that of the inclined setting; they can also be all or partially inclined in the radial direction, and the conversion efficiency into tensile forces is improved, which will not be elaborated here.

[0035] In this embodiment, at least part of the first purlins are inclined to one side in the radial direction, and at least the second purlins are inclined to the other side in the radial direction; at least part means that at least a part of the first purlins and the second purlins are inclined, and the remaining are arranged radially, or they can be all inclined, which will not be elaborated here; in this embodiment, they are all inclined, as Figure 3 (segmented purlin type) and Figure 4(In the form of a whole purlin), the number of ring seats can be three, that is, from the inside to the outside radially, there is a central ring seat 1 in the center, an intermediate ring seat 2 in the middle, and an outer ring seat 3 on the outermost side. The first purlins 4, 401 and the second purlins 5, 501 (in the present invention, when the first purlin and the second purlin are in a segmented structure, different reference numerals are used for identification, and when they are in the form of a whole, the same reference numerals are used, such as Figure 3 and Figure 4 shown) are cross-connected (the intersection points are generally between the ring seats) in space to the central ring seat 1 and the intermediate ring seat 2, and between the intermediate ring seat 2 and the outer ring seat 3; as shown in the figure, when the heliostat has a larger area, the number of ring seats can be more, and there can be multiple intermediate ring seats 2 in the figure, which will not be elaborated here; the radial direction refers to the diameter direction of a circle or the radial direction of the circumscribed circle (or the inscribed circle) of a polygonal structure, which will not be elaborated here; being inclined to one side in the radial direction means that the purlin is not on the diameter but is inclined relative to the diameter (not perpendicular to the tangent of the circle), which will not be elaborated here; in this structure, when an external force generates a torque and a gravity component force in the installation plane direction between the seat rings, the first and second purlins that cross in space convert most or even all of the torque and the gravity component force into tensile force and supporting force, with tensile force being the main one; according to the characteristic that steel has a strong ability to bear tensile force, the overall load-bearing capacity of the mounting seat is improved, and compared with a truss with the same load-bearing capacity, the overall weight of the steel is greatly reduced; it is especially suitable for the dynamic load-bearing process of the heliostat and has a good adaptability to the different azimuth changes of the torque in the dynamic process.

[0036] Of course, the following structure can also be adopted, that is, adjacent first purlins 4 are inclined in opposite directions in the radial direction, and intersections can be formed between the ring seats or on the extension lines. Adjacent second purlins 5 are inclined and crossed in opposite directions in the radial direction, and intersections can be formed between the ring seats or on the extension lines; in this embodiment, intersections are formed between adjacent ring seats. In this structure, adjacent first purlins 4 in the first purlin group are inclined in opposite directions to form intersections, and can be fixedly connected at the intersection points, thereby forming the combined action of tensile force and supporting force and improving the load-bearing capacity; similarly, adjacent second purlins 5 in the second purlin group are inclined in opposite directions to form intersections, and can be fixedly connected at the intersection points, thereby forming the combined action of tensile force and supporting force and improving the load-bearing capacity; thus, the first purlin group and the second purlin group can respectively bear tensile forces in two directions and provide supporting forces in opposite directions, further increasing the load-bearing capacity of the same purlin group, and reducing the amount of steel used on the premise of the same load-bearing capacity; the plan view shown by this structure is consistent with Figure 3 and Figure 4 , except that the reference numerals 5 and 501 of the second purlin are missing (the second purlin is blocked by the first purlin in the plan view).

[0037] Of course, it is also possible to choose to set one of the first purlin or the second purlin to be inclined to one side in the radial direction, and the other to be arranged radially, both of which can achieve some of the due mechanical purposes; or, the adjacent first purlins or second purlins are inclined in the radial direction in a manner with opposite inclination directions; similarly, the first purlin and the second purlin can also be crossed or cross at the extension line alternatively, both of which can achieve an invention purpose superior to the prior art.

[0038] In this embodiment, when the first purlin and the second purlin are in the same axial plane, the first purlin and the second purlin are integrally formed, and a hollow is provided between the first purlin and the second purlin; as Figure 5 shown, when both the first purlin and the second purlin are radially arranged or have the same inclination angle, the first purlin 4 and the second purlin 5 are integrally formed by machining methods such as stamping and a hollow part a is formed therebetween, which is beneficial to improving the structural stability and further increasing the strength.

[0039] In this embodiment, the number of the ring seats is set. The innermost one in the radial direction is the central ring seat 1, and the intermediate ring seats 2 and the outer ring seats 3 are arranged in sequence from the inside to the outside. The first purlins 4 and the second purlins 5 are fixedly arranged in a segmented manner corresponding to the adjacent ring seats (the first purlin 401 and the second purlin 501 located between the intermediate ring seat 2 and the outer ring seat 3); the number of the intermediate ring seats in this embodiment can be 0 to multiple as required, which will not be elaborated here;

[0040] Of course, the first purlin 4 and the second purlin 5 can also be an integral one and are fixedly connected to the central ring seat 1, the intermediate ring seat 2 and the outer ring seat 3 in sequence. The first purlin 4 and the second purlin 5 adopt an integral structure and are fixed to the central ring seat, the intermediate ring seat and the outer ring seat respectively. Conventional welding, riveting, bolt detachable connection can be used, and existing mechanical connection means can be utilized, which will not be elaborated here. Of course, adopting a segmented structure design between adjacent ring seats can still achieve the invention purpose, which will not be elaborated here;

[0041] The ring seats are arranged in sequence from the inside to the outside in the radial direction as required. The purpose is to set the number of the ring seats according to the area of the heliostat and the magnitude of the gravity to ensure the bearing capacity;

[0042] During actual use, the central ring seat is used to receive the driving power of the driving system, so as to complete the tracking of the sun by the heliostat and realize the function of the heliostat, which will not be elaborated here.

[0043] In this embodiment, the first purlins 4 and the second purlins 5 (in the segmented purlin structure, the first purlin 401 and the second purlin 501 are also included) are respectively applied with a pre-tightening force. Generally, bolts are used to connect the purlins and the ring seats, and a pre-tightening force is formed by applying a reserved tensile stress to ensure the structural stability.

[0044] In this embodiment, as Figure 3 shown, the ring base is circular, the first purlin and the second purlin are segmented, and the first purlin and the second purlin between adjacent ring bases are tangent to the ring base on the radially inner side; here, adjacent ring bases refer to those between the central ring base and the middle ring base and between the middle ring base and the outer ring base. As shown in the figure, the first purlin 4 and the second purlin 5 between the central ring base and the middle ring base are tangent to the central ring base, and the first purlin 401 and the second ring base 501 between the middle ring base and the outer ring base are tangent to the middle ring base; this tangent structure is more in line with the mechanical characteristics of torque conversion into tension, and can convert the applied torque and gravity component into tension and support force to the greatest extent, thereby further improving the bearing capacity; or, as Figure 4 shown, the first purlin and the second purlin are integral, and the first purlin is tangent to the central ring base. Since the central ring base is the power input position that is driven, the technical effect produced by the tangent connection structure is also obvious; Figure 3 and Figure 4 The figures shown are plan views, and their side sectional views are the same as Figure 2 shown, and the side sectional views are omitted here;

[0045] Of course, the ring base does not have to be circular, and it can also be polygonal. Similarly, the first purlin and the second purlin are segmented, and the first purlin and the second purlin between adjacent ring bases are fixedly attached to the sides of the polygon of the ring base on the radially inner side; or, the first purlin and the second purlin are integral and are fixedly attached to the sides of the polygon of the central seat ring; they have basically the same functions as the circular ring base and will not be elaborated here;

[0046] The parts where the ring base is connected to the first purlin 4 and the second purlin 5 can be specially treated, such as thickening or opening connection holes, etc., which will not be elaborated here.

[0047] In this embodiment, the axial dimension of the ring base gradually decreases from inside to outside, that is, the axial dimensions of the central ring base, the middle ring base (including between adjacent middle ring bases) and the outer ring base gradually decrease, and one end of all ring bases corresponding to the heliostat are aligned with each other to adapt to the plane where the heliostat is located, for cooperating with the first purlin to install the heliostat and ensuring stability; the first purlin is fixed to one end of the ring base corresponding to the heliostat to form an installation surface; the second purlin is inclined along the axial direction to adapt to the axial dimension of the ring base;

[0048] As shown in the figure, one end of all ring bases corresponding to the heliostat are flush with each other, which is conducive to installing the lens of the heliostat. The size is set so that the bracket gradually becomes thinner from the middle to the outer edge, adapting to the changing curve of the bearing capacity, ensuring the bearing capacity while reducing the steel consumption.

[0049] In this embodiment, a connector 6 for mounting the heliostat is provided on the first purlin. The connector 6 is fixed to the first purlin and is used to mount the heliostat. The mounting structure may adopt an existing mechanical connection structure, which will not be described in detail herein. The mounting position of the connector is as shown in FIG. Figure 1 and Figure 2 As shown, in Figure 3 , Figure 4 and Figure 5 In the structure shown, there is nothing special about the installation of the connector, and in order to more clearly illustrate the principle of the present invention and avoid interference, the connector is omitted in the figure and will not be described again;

[0050] In the present invention, another specific embodiment can also be adopted, as Figure 5 As shown, the first purlin 4 is arranged obliquely in the axial direction, and the second purlin 5 is arranged obliquely in the axial direction and is opposite to the inclination direction of the first purlin; combined with the radially inclined arrangement, the axially cross arrangement can better withstand the vertical force, and in terms of mechanical characteristics, the vertical force is converted into the tension of the purlin. Combined with the radially cross structure, the forces in various directions borne by the dynamic heliostat can be converted into the tension of the purlin, thereby further improving the stress condition.

[0051] In this embodiment, the purlin group further includes face purlins 8 and back purlins 7. The face purlins 8 are fixedly connected to the ends of all the ring seats facing the heliostat from the inside to the outside in the radial direction, and the face purlins 8 are arranged in a circumferential direction to form a mounting surface; the back purlins 7 are fixedly connected to the ends of all the ring seats facing away from the heliostat from the inside to the outside in the radial direction, and the back purlins 7 are arranged in a circumferential direction; for heliostats with a larger area, the arrangement of the face purlins 8 and the back purlins 7 can effectively increase the integrity of the mounting seat, and combined with the cross-type arrangement of the purlins, all the ring seats are rigidly constrained together. In general, the back purlins should be applied with a preload to ensure the stability of the mounting seat; the face purlins and the back purlins are radially arranged with the central ring seat as the center, and the plan view of the first purlin, the second purlin and the seat ring in this structure is the same as that of the back purlin. Figure 3 and Figure 4 The consistency shown is based on Figure 3 and Figure 4 The plane structure shown is only required to be added with radial face purlins and back purlins, and those skilled in the art can understand it based on the text description. Therefore, the plane diagram of this structure is omitted and will not be described in detail here.

[0052] The surface purlin is provided with a connector for mounting the heliostat mirror (the structure is essentially the same as that of the previous embodiment, so Figure 5 In this embodiment, the surface purlin 8 also forms the installation surface, and the connecting piece is fixed on the surface purlin to ensure the installation stability, which will not be repeated here.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A ring-purlin type all-round load-bearing heliostat support, characterized in that: It includes a purlin group and at least two ring seats radially arranged in sequence; The purlin group includes a first purlin group and a second purlin group, wherein the first purlin group includes a plurality of first purlins arranged in a circumferential direction and fixedly connected between adjacent ring seats; the second purlin group includes a plurality of second purlins arranged in a circumferential direction and fixedly connected between adjacent ring seats; The ring seat has a set size in the axial direction, and the first purlin group and the second purlin group are arranged side by side along the axial direction of the ring seat.

2. The ring-purlin type all-round load-bearing heliostat support according to claim 1, characterized in that: The first purlin or the second purlin is arranged to be inclined to one side in the radial direction; Alternatively, at least part of the first purlins are arranged to be inclined toward one side in the radial direction, and at least part of the second purlins are arranged to be inclined toward the other side in the radial direction.

3. The ring-purlin type all-round load-bearing heliostat support according to claim 1, characterized in that: Adjacent first purlins and / or adjacent second purlins are arranged to be inclined in opposite directions in the radial direction.

4. The ring-purlin type support device for heliostat according to claim 2 or 3, characterized in that: When the first purlin and the second purlin are in the same axial plane, the first purlin and the second purlin are integrally formed, and a hollow space is provided between the first purlin and the second purlin.

5. The ring-purlin type all-round load-bearing heliostat support according to claim 2 or 3, characterized in that: The ring seats are of a set number, the radially innermost one is the center ring seat, and from the inside to the outside are the middle ring seat and the outer ring seat, the first purlin and the second purlin are segmented and fixedly arranged between adjacent ring seats, or are a whole one fixedly connected to the center ring seat, the middle ring seat and the outer ring seat in sequence.

6. The ring-purlin type bracket device for heliostat according to claim 5, characterized in that: The ring seat is circular, the first purlin and the second purlin are segmented, and the first purlin and the second purlin between adjacent ring seats are tangent to the ring seat on the radial inner side; or, the first purlin and the second purlin are integral, and the first purlin is tangent to the center ring seat; Alternatively, the ring seat is polygonal, the first purlin and the second purlin are segmented, and the first purlin and the second purlin between adjacent ring seats are fitted and fixed to the polygonal edge of the radially inner ring seat; or, the first purlin and the second purlin are whole-root type and are fitted and fixed to the polygonal edge of the center seat ring.

7. The ring-purlin type support device for heliostat according to claim 5, characterized in that: The axial dimension of the ring seat gradually decreases from the inside to the outside, and the ends of all the ring seats corresponding to the heliostats are aligned with each other and adapted to the plane where the heliostats are located. The first purlin is fixed to the ends of the ring seat corresponding to the heliostats to form a mounting surface. The second purlin is adapted to the axial dimension of the ring seat and is inclined along the axial direction.

8. The ring-purlin type support device for heliostat according to claim 7, characterized in that: The first purlin is provided with a connecting piece for installing the heliostat lens.

9. The ring-purlin type support device for heliostat according to claim 2 or 3, characterized in that: The first purlin is arranged obliquely in the axial direction, and the second purlin is arranged obliquely in the axial direction and the inclination direction is opposite to that of the first purlin.

10. The ring-purlin type support device for heliostat according to claim 9, characterized in that: The purlin group also includes face purlins and back purlins. The face purlins are fixedly connected to the ends of all the ring seats facing the heliostat in sequence from the inside to the outside in the radial direction, and the face purlins are arranged in a circumferential direction to form a mounting surface; the back purlins are fixedly connected to the ends of all the ring seats facing away from the heliostat in sequence from the inside to the outside in the radial direction, and the back purlins are arranged in a circumferential direction.

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