CN201936058U - Heliostat supporting device - Google Patents

Abstract

The utility model relates to a heliostat, in particular to a heliostat supporting device of a solar thermal power station. The device includes a column, a transmission device installed on the top of the column, and a support frame installed on the transmission device. Reflectors are installed on the support frame. At least two longitudinal beams parallel to each other, the longitudinal beams include upper chords and lower chords that are parallel to each other and are located on the upper and lower sides of the beams, the upper chords and lower chords of the same longitudinal beam are connected to each other through webs, the adjacent longitudinal beams A diagonal strut with increased strength is passed between the upper chord and the lower chord, and the upper chord is provided with a mounting bracket for fixing the reflector. The utility model reduces the weight of the supporting frame while ensuring the strength and reduces the cost; mutual support is formed between different longitudinal beams, and the overall structure is stable; the transmission device can perform all-round adjustment of the azimuth angle and the elevation angle.

Description

A heliostat support device

technical field

The utility model relates to a heliostat, in particular to a heliostat supporting device of a solar thermal power station.

technical background

Heliostats are an important part of solar thermal power plants. Heliostats reflect and focus sunlight onto a fixed target, usually the receiving tower of a power station. Foreign construction experience shows that the cost of heliostats accounts for about 50% of the total cost of solar thermal power plants, and reducing the cost of heliostats is an important part of reducing the cost of solar thermal power plants. The heliostat is mainly composed of a reflector and a supporting device, and the supporting device can be divided into a column, a transmission device and a supporting frame. Reducing the weight of the support frame can reduce the load of the transmission system, reduce the energy consumption of the system, and reduce the manufacturing cost. However, while reducing costs, its practicality and reliability must be guaranteed.

The structure of the common heliostat support frame is as follows: the upper and lower surfaces of the rectangular frame are welded with steel plates, and the reflector surface is pasted on the steel plate surface. This design is not conducive to the accuracy of the curved reflector surface, and the whole structure has considerable weight; The way of hole connection, the mirror surface is multi-point supported and multi-point stretched. This design structure is light in weight and can adjust the reflecting surface with high precision. However, the strength of the structure is poor, and the performance in dealing with meteorological disasters is poor.

Contents of the invention

The purpose of the utility model is to solve the problem that the supporting frame of the heliostat is difficult to take into account the strength and weight, and to provide a supporting frame for the heliostat with stable structure, high strength and low cost.

The technical scheme adopted by the utility model to solve the technical problem is: a heliostat supporting device, including a column, a transmission device installed on the top of the column, and a support frame installed on the transmission device, and a reflector is installed on the support frame , it is characterized in that: the support frame includes a beam whose end is fixed to the transmission device, at least two parallel longitudinal beams welded on the beam, the longitudinal beams include upper chords and lower chords which are parallel to each other and are respectively located on the upper and lower sides of the beam, and the same longitudinal The upper chord and the lower chord of the beam are connected to each other through the web, and the upper chord and the lower chord of the adjacent longitudinal beam are connected by a diagonal brace with increased strength. The upper chord is provided with a mounting bracket for fixing the reflector. As mentioned above, the supporting frame of the heliostat is mainly composed of beams, longitudinal beams with upper chords and lower chords, diagonal braces, and mounting frames, which are light in weight and high in strength. The longitudinal beam is composed of an upper chord and a lower chord, and a web is set between the upper chord and the lower chord of the same longitudinal beam, and the connection is stable and reliable. Diagonal braces and cross bars are arranged between adjacent longitudinal beams, so that different longitudinal beams support each other and increase strength. The reflector is fixed on the mounting frame of the upper chord, supported by multiple longitudinal beams, and the different longitudinal beams are mutually supported by multiple diagonal braces, which is stable, reliable and high in strength.

Preferably, the two ends of the upper chords of adjacent longitudinal beams are respectively connected by cross bars. The upper chord of the longitudinal beam and the mounting frame are the key parts to support the reflector. The mounting frames of the upper chords of multiple longitudinal beams should be kept on the same plane as much as possible.

Preferably, the two ends of the lower chords of adjacent longitudinal beams are respectively connected by cross bars. Increase the stability of the overall support.

As a preference, a flange is provided at the end where the beam is installed with the transmission device, and a stiffener is provided between the flange and the beam. The flange piece provides a stable connection with the transmission device, and ribs are provided to ensure the connection strength between the end of the beam and the flange piece.

Preferably, each connection position of the support frame is fixed by welding.

Preferably, the beam is a hollow columnar structure. Reduce the overall weight of the support frame.

Preferably, the support frame is arranged symmetrically on both sides of the transmission device, so as to balance the weight on both sides of the transmission device, and avoid damage to equipment due to torsional force.

As a preference, the transmission device includes an upper box for adjusting the elevation angle and a lower box for adjusting the azimuth angle, the lower box is installed on the top of the column, the lower box is provided with a vertical axis of the lower worm wheel, and the upper box is installed on the lower On the upper surface of the worm wheel of the box body, a worm wheel is arranged in the upper box body, the axis is horizontal, and the two sides of the worm wheel of the upper box body are respectively connected to the ends of the beam. The azimuth angle is adjusted by the worm wheel of the lower box, the height angle is adjusted by the worm wheel of the upper box, and the support frame can be adjusted in all directions under the drive of the transmission device, so as to maximize the use of solar energy.

The utility model adopts a frame support structure composed of beams, longitudinal beams, diagonal braces, crossbars, mounting frames, etc. to support the reflector, which can reduce the weight of the support frame while ensuring the strength and reduce the cost; Support, the overall structure is stable; the transmission device can perform all-round adjustment of azimuth and altitude.

Description of drawings

Fig. 1 is a schematic diagram of the overall installation structure of the utility model.

Fig. 2 is a structural schematic diagram of a reflector mounted on a support frame of the present invention.

Fig. 3 is a structural schematic diagram of the transmission device of the present invention.

Fig. 4 is a schematic diagram of the frame structure of the support frame of the present invention.

In the figure: 1. Reflector, 2. Support frame, 3. Transmission device, 4. Beam, 5. Flange piece, 6. Rib plate, 7. Mounting frame, 8. Upper chord, 9. Lower chord, 10. Abdominal rod, 11. diagonal brace, 12. cross bar, 13. upper box, 14. lower box, 15. screw hole, 16. column.

Detailed ways

Below through specific embodiment and in conjunction with accompanying drawing, the utility model is further described.

A heliostat supporting device, as shown in Figure 1, a transmission device 3 is installed on the upper end of a column 16, a support frame 2 is installed symmetrically on both sides of the transmission device 3, and a reflector 1 is installed on the upper part of the support frame 2.

The structure of the support frame 2 is shown in Figure 2 and Figure 4, including a crossbeam 4 whose end is fixed to the transmission device 3. The crossbeam 4 is a hollow columnar structure, and two longitudinal beams are welded on the crossbeam 4, and the two longitudinal beams are parallel to each other. The longitudinal beam includes an upper chord 8 and a lower chord 9 respectively located on the upper and lower sides of the cross beam 4 . The upper chord 8 and the lower chord 9 are connected by several webs 10 . The longitudinal beam farther away from the transmission device on the crossbeam 4 is the outer longitudinal beam, and the longitudinal beam closer to the transmission device on the crossbeam is the inner longitudinal beam. There are 6 Two diagonal braces 11 connected end to end, wherein the two outermost diagonal braces 11 connect the ends of the lower chord 9 of the inner longitudinal beam and the upper chord 8 of the outer longitudinal beam. A cross bar 12 is provided between the upper chord of the inner longitudinal beam and the end of the upper chord of the outer longitudinal beam, and a cross bar 12 is arranged between the lower chord of the inner longitudinal beam and the end of the lower chord of the outer longitudinal beam. The upper side of the upper chord 8 is evenly provided with several mounting frames 7, and the reflector 1 is installed across the upper chord mounting frames 7 of the two longitudinal beams. The parts of the support frame 2 are fixed by welding.

The structure of the transmission device 3 is shown in FIG. 3 , including an upper box body 13 and a lower box body 14 , and a worm wheel is arranged in the lower box body, and the axis of the worm wheel is in a vertical direction. The bottom of the upper box is fixedly connected with the worm wheel of the lower box so that the upper box rotates with the worm wheel of the lower box. Also be provided with worm gear in the upper box body, the axis of worm wheel is horizontal direction, the screw hole 15 that is fixed with the bracing frame of heliostat is evenly provided with on the circumference of the two sides of upper box body turbine. The upper box body 13 and the lower box body 14 are respectively provided with worms which drive the worm gear to rotate. The end of crossbeam 4 is provided with flange piece 5, and flange piece 5 is installed with the screw hole 15 of the side of upper box body 13, and rib plate 6 is evenly arranged between flange piece 5 and the end circumferential surface of crossbeam 4.

When working, the worm wheel of the lower box of the transmission device adjusts the azimuth angle of the support frame, and the worm wheel of the upper box adjusts the height angle of the support frame, so that the heliostats installed on the support frame can be adjusted at various angles.

The above structure is only a preferred embodiment of the utility model, and is not used to limit the scope of implementation of the utility model: that is, all equal changes and modifications made according to the content of the utility model are all within the scope of protection required by the claims of the utility model covered.

Claims (8)

1. A heliostat supporting device, comprising a column, a transmission device installed on the top of the column, and a support frame installed on the transmission device, a reflector is installed on the support frame, and it is characterized in that: the support frame includes an end and a transmission A fixed beam, at least two parallel longitudinal beams welded on the beam, the longitudinal beams include upper and lower chords that are parallel to each other and located on the upper and lower sides of the beam, and the upper and lower chords of the same longitudinal beam are connected by webs They are connected to each other, the upper chord and the lower chord of the adjacent longitudinal beam are connected by a diagonal strut with increased strength, and the upper chord is provided with a mounting bracket for fixing the reflector. 2 . The heliostat supporting device according to claim 1 , wherein the two ends of the upper chords of adjacent longitudinal beams are respectively connected by cross bars. 3 . 3 . The heliostat supporting device according to claim 1 , wherein the two ends of the lower chords of adjacent longitudinal beams are respectively connected by cross bars. 4 . 4 . The heliostat supporting device according to claim 1 , wherein a flange is provided at one end of the beam, and a stiffener is provided between the flange and the beam. 5 . 5. A heliostat supporting device according to claim 1 or 2 or 3 or 4, characterized in that: each connection position of the support frame is fixed by welding. 6 . The heliostat supporting device according to claim 1 , 2 , 3 or 4 , wherein the beam is a hollow columnar structure. 7. A heliostat supporting device according to claim 1 or 2 or 3 or 4, characterized in that the supporting frame is arranged symmetrically on both sides of the transmission device. 8. A heliostat supporting device according to claim 1 or 2 or 3 or 4, characterized in that: the transmission device includes an upper box for adjusting the elevation angle and a lower box for adjusting the azimuth angle, the lower box The body is installed on the top of the column, the lower box is equipped with a worm gear, the axis of the worm wheel is vertical, the upper box is installed on the worm wheel of the lower box, the upper box is equipped with a worm wheel, the axis of the worm wheel is horizontal, and the two sides of the upper box turbine are respectively connected Beam end.

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