Heliostat supporting structure with truss shaped like Chinese character'mi 'and heliostat

Abstract

The invention discloses a star-shaped truss heliostat supporting structure and a heliostat. The truss is arranged on the diagonal line and the symmetry axis of the mirror surface, the driven hub structure is connected with the truss shaped like the Chinese character'mi 'through the connecting rod, the length of an overhanging cantilever of the truss is shortened, the overall rigidity of the truss is improved, the overall stress of the truss structure can be more uniform, and therefore the wind-induced vibration response is reduced; and the normal working wind speed and the condensation precision of the heliostat are improved. Moreover, a pitching rotation supporting structure is additionally arranged between the truss and the stand column, so that a driving force arm can be remarkably increased, the motor load can be reduced, the height of the stand column can be effectively reduced, the material consumption of the stand column is reduced, the construction cost is further reduced, and the heliostat is particularly suitable for medium-large heliostats.

Description

Technical Field

[0001] The present invention relates to the technical field of solar thermal power generation, and more specifically, to a M-shaped truss heliostat support structure and a heliostat. Background Art

[0002] Solar thermal power generation is one of the main technologies for utilizing solar energy. In a solar thermal power plant, heliostats are concentrating devices that track the sun and reflect sunlight to the absorber on the top of the tower. Thousands of heliostats make up the entire mirror field, and the cost of the mirror field accounts for more than 50% of the total construction cost of a tower-type solar thermal power station. Therefore, a reasonable heliostat support structure is crucial to improving the mirror concentration efficiency and reducing construction costs.

[0003] Most of the existing medium and large heliostat support structures use a "T" structure consisting of a column-torque tube. First of all, this type of heliostat structure has problems such as indirect mirror load transmission path, uneven torque tube force, and low material strength utilization rate; in addition, due to the small force arm between the drive mechanism and the pitch rotation axis, the drive mechanism power demand is large, so the drive cost is high. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art in the heliostat support structure and provides a M-shaped truss heliostat support structure and a heliostat, in the hope of solving the problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention provides a M-shaped truss heliostat support structure on one hand.

[0006] A M-shaped truss heliostat support structure includes a mirror surface, a purlin assembly, and a truss structure:

[0007] The truss structure comprises a truss connector and a truss, wherein the truss is mounted on the truss connector, the truss connector is arranged at the center of the mirror surface, the truss is arranged on the diagonal line of the mirror surface, and the truss is in an X-shape;

[0008] The purlin components are installed on the truss in parallel at equal intervals, and the direction of the purlin components is parallel to any side of the mirror surface;

[0009] The mirror surface is installed on the purlin assembly.

[0010] The present invention improves the degree of assembly by installing the truss on the truss connecting member and connecting the truss and the truss connecting member through bolts.

[0011] A further technical solution is that the truss is also arranged on a mirror symmetry axis, and the truss has a cross-shaped shape.

[0012] The M-shaped truss can provide more uniform support for the mirror surface.

[0013] A further technical solution is that the truss connector is circular, and the truss is installed on the circumference of the truss connector.

[0014] A further technical solution is that the truss connector includes an upper truss connector and a lower truss connector;

[0015] The truss comprises an upper column, a lower column and a supporting column. The upper column is installed on an upper truss connecting member. The purlin assembly is fixed to the upper column. The lower column is installed on a lower truss connecting member. The supporting column is arranged between the upper column and the lower column.

[0016] The truss connector and the truss are both configured as a double-layer structure, and support columns can be arranged between the truss connector and the truss. Compared with a single-layer truss, the double-layer structure can improve the structural strength of the truss connector and the truss.

[0017] A further technical solution is that the purlin assembly includes a steel section, a bolt-type gasket, and a bolt;

[0018] The top and bottom of the steel section are both provided with a plurality of screw holes;

[0019] The bolt-type gasket includes a fastening nut, a screw, a positioning plate, and a connecting plate. The screw passes through the screw hole at the top of the steel section. The fastening nut and the positioning plate fix the bolt-type gasket to the top of the steel section. The mirror is fixed to the connecting plate.

[0020] The bolts pass through the screw holes at the bottom of the steel section to fix the purlin assembly to the truss.

[0021] The present invention also provides a heliostat, comprising the above-mentioned M-shaped truss heliostat support structure, the pitch rotation support structure, the support platform, and the column;

[0022] The support platform is installed on the top of the column, and the support platform can rotate in any direction;

[0023] The pitch rotation support structure is installed on the support platform, and the M-shaped truss heliostat support structure is installed on the pitch rotation support structure;

[0024] The pitch rotation support structure can adjust the pitch angle of the M-shaped truss heliostat support structure.

[0025] The force transmission path of the traditional "T"-shaped heliostat support structure is: mirror surface → pad → purlin assembly → truss → torque tube → column, and all forces need to be gathered at the driving mechanism in the center of the torque tube before being transmitted to the column; while the force transmission path of the heliostat support structure of the present invention is: mirror surface → pad → purlin assembly → truss → pitch rotation support structure → column, and all forces do not need to be gathered at the center of the truss, but are directly transmitted downward through the pitch rotation support structure. The force transmission path of the present invention is direct and clear, and the entire truss structure is evenly stressed, and there will be no large stress in a certain place, avoiding the uneven force and complex force transmission path of the existing "T"-shaped structure, so that the material strength of each part of the structure maintains a high utilization rate, so as to achieve the purpose of saving materials.

[0026] A further technical solution is that the pitch rotation support structure includes a driving gear, a driving motor, a driven hub, and a support seat;

[0027] The driving motor is connected to the driving gear;

[0028] The driven hub is provided with teeth meshing with the driving gear, and the driven hub is connected to the truss structure of the M-shaped truss heliostat support structure;

[0029] The support seat is arranged on the support platform, and the driven wheel hub can be rotatably mounted on the support seat.

[0030] The pitch adjustment of the heliostat support structure of the present invention is achieved by driving the semicircular hub structure to rotate with a motor. For medium and large heliostats, there is a long lever arm between the motor and the pitch torque tube in the structure. Compared with the existing "T"-shaped heliostat support structure composed of a column-torque tube, on the one hand, the heliostat support structure of the present invention requires less driving force under the same load conditions, which can significantly reduce the load of the motor and thus reduce the driving cost; on the other hand, the column is lower under the same height conditions, which can effectively reduce the amount of column material used, thereby achieving the purpose of reducing costs and increasing efficiency.

[0031] A further technical solution is that the pitch rotation support structure further includes a connecting rod and a support rod;

[0032] The two ends of the connecting rod are respectively connected to the driven wheel hub and the truss;

[0033] The support seat is provided with a mounting hole at a position corresponding to the connecting rod;

[0034] The connecting rod is provided with an insert rod, and the insert rod can be rotatably inserted into the mounting hole of the support seat;

[0035] The two ends of the support rod are respectively connected to the connecting rod and the driven wheel hub.

[0036] The connecting rod can increase the connection points between the driven hub and the truss, and the supporting rod can provide support for the connecting rod to improve the strength of the connecting rod.

[0037] A further technical solution is that the overall shape of the connecting rod is a rectangle;

[0038] The connecting rod is connected and fixed to each truss through a connecting piece.

[0039] No matter the truss is X-shaped or M-shaped, it must have an intersection with the rectangular connecting rod. The driven hub structure is connected to the M-shaped truss through the connecting rod, which shortens the length of the truss cantilever, increases the overall stiffness of the truss, and makes the overall force of the M-shaped truss structure more uniform and the material utilization more sufficient, thereby achieving the purpose of saving materials.

[0040] A further technical solution is that the column includes a column top, a column foot, a stiffening rib, and a column body;

[0041] The top of the column is arranged at the top of the column body, and the foot of the column is arranged at the bottom of the column body;

[0042] Stiffening ribs are arranged between the top of the column, the column foot and the column body.

[0043] Compared with the prior art, the present invention has at least the following beneficial effects: the present invention sets the truss on the mirror diagonal and the axis of symmetry, and connects the driven hub structure to the cross-shaped truss through a connecting rod, shortening the length of the truss cantilever, on the one hand, increasing the overall stiffness of the truss, on the other hand, all forces do not need to be gathered at the center of the truss, but are directly transmitted downward through the pitch rotation support structure, optimizing the load transmission mode, making the material utilization more sufficient, thereby achieving the purpose of saving materials. In addition, the heliostat of the present invention adds a pitch rotation support structure between the truss and the column. For medium and large heliostats, there is a long force arm between the motor and the pitch torque tube in the structure, which can significantly reduce the load of the motor, thereby reducing the driving cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the overall structure of the heliostat;

[0045] Figure 2 It is a schematic diagram of the M-shaped truss heliostat support structure;

[0046] Figure 3 It is a schematic diagram of the pitch rotation support structure;

[0047] Figure 4 It is the side view of the overall structure;

[0048] Figure 5 It is a schematic diagram of the bolt type gasket structure;

[0049] Figure 6 This is a schematic diagram of the column structure.

[0050] In the figure, 1-mirror, 2-purlin assembly, 21-steel, 22-bolt type gasket, 221-fastening nut, 222-screw, 223-positioning plate, 224-connecting plate, 3-truss structure, 31-truss connector, 311-upper truss connector, 312-lower truss connector, 32-truss, 321-upper column, 322-lower column, 323-support column, 4-pitch rotation support structure, 41-driving gear, 42-driving motor, 43-driven hub, 44-connecting rod, 45-support rod, 46-support seat, 5-support platform, 6-column. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0052] Embodiment 1

[0053] A M-shaped truss heliostat support structure, see Figure 1 , Figure 2 , including mirror surface 1, purlin assembly 2, truss structure 3:

[0054] The truss structure 3 includes a truss connector 31 and a truss 32. The truss 32 is installed on the truss connector 31. The truss connector 31 is arranged at the center of the mirror surface 1. The truss 32 is arranged on the diagonal line of the mirror surface 1. The truss 32 is in an X-shape.

[0055] It should be noted that the number and shape of the trusses 32 can be adjusted according to the load conditions. In a preferred embodiment, the trusses 32 are also arranged on the symmetry axis of the mirror surface 1, and the shape of the trusses 32 is a cross.

[0056] In this embodiment, the truss connector 31 includes an upper truss connector 311 and a lower truss connector 312 ; the upper truss connector 311 and the lower truss connector 312 are circular, and the truss 32 is installed on the circumference of the truss connector 31 .

[0057] The truss 32 includes an upper column 321, a lower column 322, and a support column 323. The upper column 321 is installed on the upper truss connector 311, the purlin assembly 2 is fixed to the upper column 321, the lower column 322 is installed on the lower truss connector 312, and the support column 323 is arranged between the upper column 321 and the lower column 322.

[0058] In this embodiment, the upper columns 321 and the lower columns 322 are made of steel pipes, all the upper columns 321 are in the same plane, the lower columns 322 are bent, and the ends of the upper columns 321 that are not connected to the truss connector 31 are connected to the ends of the lower columns 322 that are not connected to the truss connector 31. There is a certain distance between the upper columns 321 and the lower columns 322, and a plurality of inclined support columns 323 are provided.

[0059] The purlin components 2 are installed on the truss 32 in parallel at equal intervals, and the direction of the purlin components 2 is parallel to any side of the mirror surface 1; the purlin components 2 can be arranged horizontally or vertically. In this embodiment, the purlin components 2 are arranged horizontally.

[0060] The purlin assembly 2 includes a steel section 21, a bolt-type gasket 22, and bolts;

[0061] The top and bottom of the steel section 21 are provided with a plurality of screw holes;

[0062] See also Figure 5 The bolt-type gasket 22 includes a fastening nut 221, a screw 222, a positioning plate 223, and a connecting plate 224. The screw 222 passes through the screw hole at the top of the profile steel 21. The fastening nut 221 and the positioning plate 223 fix the bolt-type gasket 22 to the top of the profile steel 21. The mirror 1 is fixed on the connecting plate 224.

[0063] The bolts pass through the screw holes at the bottom of the steel section 21 to fix the purlin assembly 2 to the truss 32 , and the mirror 1 is installed on the purlin assembly 2 .

[0064] The mirror surface 1 can be fixed on the connecting plate 224 by bonding, plugging, etc. In this embodiment, bonding is adopted.

[0065] Embodiment 2

[0066] A heliostat, see Figure 1 , Figure 4 , including the M-shaped truss heliostat support structure, the pitch rotation support structure 4, the support platform 5, and the column 6 as described above;

[0067] The support platform 5 is installed on the top of the column, and the support platform 5 can rotate in any direction;

[0068] The pitch rotation support structure 4 is installed on the support platform 5, and the M-shaped truss heliostat support structure is installed on the pitch rotation support structure 4;

[0069] The pitch rotation support structure 4 can adjust the pitch angle of the M-shaped truss heliostat support structure.

[0070] See also Figure 3The pitch rotation support structure 4 may be motor-controlled or gear-driven. In this embodiment, the pitch rotation support structure 4 includes a driving gear 41, a driving motor 42, a driven hub 43, a connecting rod 44, a support rod 45, and a support seat 46;

[0071] The driving motor 42 is connected to the driving gear 41;

[0072] The driven hub 43 is provided with teeth that mesh with the driving gear 41 . The driven hub 43 is connected to the truss structure 3 of the M-shaped truss heliostat support structure.

[0073] In this embodiment, the driven hub 43 is semicircular in shape, and is provided with teeth on its outer diameter that match the driving gear 41 . The driven hub 43 meshes with the driving gear 41 , and can achieve a maximum pitch angle adjustment of 90°.

[0074] The two ends of the connecting rod 44 are respectively connected to the driven hub 43 and the truss 32;

[0075] See also Figure 4 , the support seat 46 is arranged on the support platform 5, and the driven hub 43 can be rotatably mounted on the support seat 46;

[0076] In a preferred embodiment, the support seat 46 is provided with a mounting hole at a position corresponding to the connecting rod 44;

[0077] The connecting rod 44 is provided with an insert rod, and the insert rod can be rotatably inserted into the mounting hole of the support seat 46;

[0078] In a preferred embodiment, the overall shape of the connecting rod 44 is rectangular, and the connecting rod 44 is connected and fixed to each truss 32 through a connecting piece. Specifically, both ends of the semicircular driven hub 43 are respectively connected to the connecting rod 44, and the connecting rod 44 connected to the driven hub 43 is further connected to the other two connecting rods 44 to form a rectangular structure.

[0079] Connectors are provided at the midpoint and corner of each side of the rectangular structure. The connectors are sheets with screw holes. Each connector is connected to a corresponding truss 32 .

[0080] The two ends of the support rod 45 are connected to the connecting rod 44 and the driven hub 43 respectively.

[0081] The column 6 includes a column top, a column foot, a stiffening rib, and a column body;

[0082] The top of the column is arranged at the top of the column body, and the foot of the column is arranged at the bottom of the column body;

[0083] See also Figure 6Stiffening ribs are arranged between the top of the column, the column foot and the column body.

[0084] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in the present application. More specifically, within the scope disclosed in the present application, multiple variations and improvements can be made to the components and / or layout of the subject combination layout. In addition to the variations and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A M-shaped truss heliostat support structure, characterized in that: Including mirrors, purlin components, and truss structures; The truss structure comprises a truss connector and a truss, wherein the truss is mounted on the truss connector, the truss connector is arranged at the center of the mirror surface, the truss is arranged on the diagonal line of the mirror surface, and the truss is in an X-shape; The purlin components are installed on the truss in parallel at equal intervals, and the direction of the purlin components is parallel to any side of the mirror surface; The mirror surface is installed on the purlin assembly.

2. The M-shaped truss heliostat support structure according to claim 1, characterized in that: The truss is also arranged on a mirror symmetry axis, and the shape of the truss is a cross.

3. A M-shaped truss heliostat support structure according to any one of claims 1 and 2, characterized in that: The truss connecting piece is circular, and the truss is installed on the circumference of the truss connecting piece.

4. The M-shaped truss heliostat support structure according to claim 3, characterized in that: The truss connector includes an upper truss connector and a lower truss connector; The truss comprises an upper column, a lower column and a supporting column. The upper column is installed on an upper truss connecting member. The purlin assembly is fixed to the upper column. The lower column is installed on a lower truss connecting member. The supporting column is arranged between the upper column and the lower column.

5. The M-shaped truss heliostat support structure according to claim 4, characterized in that: The purlin assembly includes steel sections, bolt-type gaskets, and bolts; The top and bottom of the steel section are both provided with a plurality of screw holes; The bolt-type gasket includes a fastening nut, a screw, a positioning plate, and a connecting plate. The screw passes through the screw hole at the top of the steel section. The fastening nut and the positioning plate fix the bolt-type gasket to the top of the steel section. The mirror is fixed to the connecting plate. The bolts pass through the screw holes at the bottom of the steel section to fix the purlin assembly to the truss.

6. A heliostat, characterized in that: It comprises the M-shaped truss heliostat support structure, the pitch rotation support structure, the support platform, and the column as described in any one of claims 1 to 5; The support platform is installed on the top of the column, and the support platform can rotate in any direction; The pitch rotation support structure is installed on the support platform, and the M-shaped truss heliostat support structure is installed on the pitch rotation support structure; The pitch rotation support structure can adjust the pitch angle of the M-shaped truss heliostat support structure.

7. A heliostat according to claim 6, characterized in that: The pitch rotation support structure includes a driving gear, a driving motor, a driven wheel hub, and a support seat; The driving motor is connected to the driving gear; The outer side of the driven hub is an arc, and the outer side of the driven hub is provided with teeth, which mesh with the driving gear, and the driven hub is connected to the truss structure of the M-shaped truss heliostat support structure; The support seat is arranged on the support platform, and the driven wheel hub can be rotatably mounted on the support seat.

8. A heliostat according to claim 7, characterized in that: The pitch rotation support structure comprises a connecting rod and a support rod; The two ends of the connecting rod are respectively connected to the driven wheel hub and the truss; The support seat is provided with a mounting hole at a position corresponding to the connecting rod; The connecting rod is provided with an insert rod, and the insert rod can be rotatably inserted into the mounting hole of the support seat; The two ends of the support rod are respectively connected to the connecting rod and the driven wheel hub.

9. A heliostat according to claim 8, characterized in that: The overall shape of the connecting rod is a rectangle; The connecting rod is connected and fixed to each truss through a connecting piece.

10. A heliostat according to any one of claims 6 to 9, characterized in that: The column comprises a column top, a column foot, a stiffening rib, and a column body; The top of the column is arranged at the top of the column body, and the foot of the column is arranged at the bottom of the column body; Stiffening ribs are arranged between the top of the column, the column foot and the column body.

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