CN202494825U - Heliostat structure for realizing sun-chasing positioning - Google Patents

Abstract

The utility model relates to a heliostat structure for realizing tracking and positioning of the sun, comprising a heliostat, a heliostat frame, a heliostat bracket, a heliostat mirror driving device and a heliostat frame driving device, the heliostat The mirror frame is rotatably mounted on the heliostat frame, and the heliostat frame driving device is respectively connected to the heliostat frame and the heliostat frame to drive the heliostat frame to rotate around a horizontal roll axis. The heliostat includes At least two heliostat mirrors, the heliostat mirrors are rotatably mounted on the heliostat frame, and the heliostat mirror driving device is respectively connected to the heliostat frame and the heliostat mirror for driving the heliostat mirrors to rotate around their respective The horizontal pitch axis is linked, and the horizontal pitch axis is set parallel to and perpendicular to the horizontal roll axis. The utility model realizes the sun-tracking positioning of the heliostat with ingenious structural design, has the function of tracking the sun, can effectively improve the problem of wind resistance, has a simplified structure, higher reliability, simpler maintenance and calibration, and is suitable for large-scale popularization and application.

Description

Heliostat structure for sun tracking and positioning

technical field

The utility model relates to the technical field of solar thermal power generation and photothermal utilization, in particular to the technical field of a heliostat system, in particular to a heliostat structure for realizing sun tracking and positioning.

Background technique

Since the former Soviet Union designed and built the world's first small tower-type solar thermal power generation test device in 1950 and France built the first tower-type solar thermal power generation system with an electric power of 100kW in the Pyrenees in 1976, in the 1980s Since then, the United States, Italy, France, Spain, Japan, Australia, Germany, Israel and other countries have successively established various types of experimental demonstration devices and commercial operation devices, which have promoted the development and commercialization of solar thermal power generation technology. The existing solar thermal power generation systems in the world mainly include three basic types: trough line focusing system, tower system and dish system.

The heliostat is a very important device in the initial stage of energy conversion in the tower solar thermal power generation system. Thousands of heliostats are usually used in the tower system, which continuously track the solar radiation energy through their independent control systems, and focus the energy on the heat absorber on the top of the tower, and then use it in the form of heat energy. Therefore, the design of the heliostat is one of the important links in the design of the tower solar thermal power generation system, and it is the basis for reducing the cost of power generation and realizing the commercialization of solar thermal power generation.

Heliostats are usually composed of four parts: bracket, transmission system, reflector and control system. The bracket is the supporting part of the whole heliostat, which connects all parts stably. The reflector is fixed on the bracket, and through the adjustment of the transmission system at any time, the incident light of the sun is reflected to the heat absorber of the heat absorption tower. Now most manufacturers use ultra-clear glass silver-coated mirrors. The control system uses azimuth and pitch dual-axis drive to control the heliostat to automatically track the sun. Most of the reflective surfaces of heliostats used in domestic and foreign projects are single-layer micro-curved hot-bent glass silver mirrors, which are supported by a single column. The heliostats with this structure usually use program-controlled open-loop control to achieve tracking. The entire mirror frame is supported by a fixed single column, and the vertical worm gear deceleration drive mechanism set on the upper end of the column drives the mirror frame to realize the azimuth movement, and the horizontal worm gear deceleration drive mechanism drives the mirror frame to realize the elevation angle motion. The utility model has the advantages of simple structure and good anti-overturning performance. However, limited by machining precision, this type of single-column heliostat has insurmountable difficulties in tracking error caused by the transmission gap; and the high-precision transmission mechanism and the manufacture of curved glass mirrors make the heliostat manufacturing cost high. The protection of the silver-plated layer of the silver mirror needs to be overcome urgently; at the same time, the inevitable mechanical deformation of the mirror frame also poses challenges to the light-gathering effect of the heliostat.

The arc-shaped guide rail transmission method is derived from the mature linear Phoebe solar heat collection technology. The linear Phoebe solar heat collection system consists of a one-dimensional rotating flat mirror array tens of meters long and a fixed tube heat absorber at a certain height. It is mainly used in the field of solar energy collection at low and medium temperatures below 500 °C.

Because most of the existing heliostats are single-sided mirror frames, that is, one mirror frame drives one mirror, which often brings about a relatively large wind resistance problem. In order to achieve a relatively high efficiency, the single-sided mirror, the mirror frame and the driving mechanism are often large, and a large-sized mirror will produce a large mirror deformation error, and the huge driving mechanism also makes the cost remain high. The rotation mode of the azimuth angle + elevation angle of the existing heliostat has a large mechanical hard limit, which is not conducive to protecting the mirror, and will also cause a certain period of out of control during actual operation. In addition, more control and transmission units are required per square meter of mirror, the reliability is lower, and the calibration and maintenance costs are higher.

Therefore, it is necessary to provide a new type of heliostat system, which has the function of tracking the sun, can effectively improve the problem of wind resistance, has a simplified structure, higher reliability, and simpler maintenance and correction.

Utility model content

The purpose of this utility model is to overcome the above-mentioned shortcomings in the prior art, and to provide a heliostat structure for realizing sun tracking and positioning. The problem of wind resistance is improved, the structure is simplified, the reliability is higher, the maintenance and correction are simpler, and it is suitable for large-scale promotion and application.

In order to achieve the above object, the utility model realizes the heliostat structure for chasing the sun and positioning, which is characterized in that it includes a heliostat, a heliostat frame, a heliostat bracket, a heliostat mirror driving device and a heliostat mirror frame driving device, the heliostat frame is rotatably mounted on the heliostat bracket, and the heliostat frame driving device is respectively connected to the heliostat frame and the heliostat bracket for Driving the heliostat frame to rotate around a horizontal roll axis, the heliostat includes at least two heliostat mirrors, the heliostat mirrors are rotatably mounted on the heliostat frame, the The heliostat mirror driving device is respectively connected to the heliostat frame and the heliostat mirror for driving the heliostat mirrors to rotate around their respective horizontal pitch axes, and the horizontal pitch axes are arranged in parallel with the The horizontal scroll axis is set vertically.

Preferably, the heliostat mirror is rotatably mounted on the heliostat frame using a louver structure.

Preferably, the heliostat mirror driving device includes a first driving part and a first transmission part, the first driving part is installed on the heliostat frame and connected to the The heliostat mirrors thus drive the heliostat mirrors to move around their respective horizontal and pitch axes.

More preferably, the first transmission part includes a box body, a rack and several gears, the box body is installed on the heliostat frame, and the gears are respectively installed on the heliostat mirrors and meshed The rack, the rack is movably installed in the box, the first driving part is connected to one of the gears for driving the gear to rotate or the first driving part is connected to the rack for To drive the rack to move linearly.

Furthermore, the first transmission part also includes a plurality of linear bearings, and a plurality of tooth segments are arranged at intervals on the rack, the linear bearings are installed in the box, and the rack is installed on the In the above-mentioned linear bearing, the gear meshes with the tooth segment.

Further, the first transmission part also includes a plurality of balls and a rack mounting plate, the rack is mounted on the rack mounting plate, the rack mounting plate is located in the box, the The balls are respectively located between the rack mounting plate and the side of the box and between the rack mounting plate and the bottom of the box.

Furthermore, the first transmission part further includes a plurality of guide wheels, the guide wheels are installed in the box and are located under the rack to support the rack.

Furthermore, the first driving part is a linear electric cylinder, a push rod or a hydraulic cylinder so as to directly drive the rack to move linearly, or the first driving part connects the rack through a screw and a screw nut for To drive the rack to move linearly.

More preferably, the first transmission part includes several transmission belts and pulleys, two of the pulleys are respectively installed on the heliostat mirrors, and the transmission belts are sequentially connected to the two adjacent heliostat mirrors. For one of the pulleys, the first driving component is connected to one of the pulleys for driving the pulley to rotate or the first driving component is connected to one of the transmission belts for driving the transmission belt to move linearly.

More preferably, the first transmission part includes a box body, a worm and several worm gears, the box body is installed on the heliostat mirror frame, and the worm wheels are respectively installed on the heliostat mirror mirrors and engage with the heliostat mirrors. The worm, the worm is rotatably installed in the box, the first driving part is connected to one of the worm gears for driving the worm wheel to rotate or the first driving part is connected to the worm for driving the The worm turns.

More preferably, the first transmission part includes two pull ropes and several sheaves, two of the sheaves are respectively installed on the heliostat mirror, and one of the pull ropes is sequentially and fixedly connected to all the pulleys. One of the sheaves on the heliostat mirror, the other pull rope is fixedly connected in reverse series to the other sheave on the heliostat mirror, and the first driving part is connected to the sheave One of them is used to drive the sheave to rotate, or the first driving part is respectively connected to the two pull ropes to drive the two pull ropes to move linearly.

More preferably, the first transmission part includes a rigid connecting rod and several crankshafts, the crankshafts are respectively mounted on the heliostat mirrors, the middle part of the crankshaft is rotatably connected to the rigid connecting rod, and the first A drive member is connected to one of the crankshafts for driving the crankshaft to rotate.

Preferably, the heliostat bracket includes at least two arc-shaped guide rails and a base, the arc-shaped guide rails are rotatably mounted on the base, and the heliostat frame is installed on the arc The heliostat frame driving device is respectively connected to the arc-shaped guide rail and the base to drive the heliostat frame to rotate around the horizontal roll axis.

More preferably, the base is rotatably provided with two spaced rotating shafts, and the arc-shaped guide rail abuts on the two rotating shafts.

More preferably, the driving device for the heliostat frame includes a second driving part and a second transmission part, the second driving part is installed on the base and connected to the circular arc through the second transmission part The guide rail thereby drives the heliostat frame to rotate around the horizontal roll axis.

Furthermore, the second transmission part includes an arc-shaped rack or an arc-shaped synchronous belt and a transmission gear, and the arc-shaped rack or an arc-shaped synchronous belt is installed on the arc-shaped guide rail, The transmission gear is installed on the second driving part and engages with the arc-shaped rack or the arc-shaped synchronous belt.

Furthermore, the second transmission part includes a linear electric cylinder or a linear hydraulic cylinder, and the two ends of the linear electric cylinder or linear hydraulic cylinder are respectively rotatably connected to the base and the middle part of the arc-shaped guide rail.

The beneficial effects of the utility model are specifically:

1. The heliostat structure of the present utility model for tracking the sun and positioning includes a heliostat, a heliostat frame, a heliostat bracket, a heliostat mirror driving device and a heliostat frame driving device. The mirror frame is rotatably mounted on the heliostat frame, and the heliostat frame driving device is respectively connected to the heliostat frame and the heliostat frame for driving the heliostat frame Rotating around a horizontal roll axis, the heliostat includes at least two heliostat mirrors, the heliostat mirrors are rotatably mounted on the heliostat frame, and the heliostat mirror driving devices are respectively connected to The heliostat frame and the heliostat mirror are used to drive the heliostat mirror to move around their respective horizontal pitch axes. The horizontal pitch axes are arranged in parallel and perpendicular to the horizontal roll axis. Therefore, The utility model adopts the principle of dividing a large-area reflector into a plurality of small-area reflectors to reduce the size of the light spot and increase the concentration rate. The small reflectors that can independently generate light spots, that is, heliostat mirrors, also have the ability to track two axes. Solar capacity: Each small reflector rotates with the heliostat frame uniformly around the horizontal roll axis and is linked around its respective horizontal pitch axis. The design is ingenious and has the function of tracking the sun, which can effectively improve the problem of wind resistance. The structure is simplified and the reliability is higher. High, easier maintenance and correction, suitable for large-scale promotion and application.

2. The heliostat bracket of the heliostat structure of the utility model to realize sun tracking and positioning includes at least two arc-shaped guide rails and a base, the arc-shaped guide rails are rotatably mounted on the base, and the heliostat The mirror frame is installed on the arc-shaped guide rail, and the driving device for the heliostat frame is respectively connected to the arc-shaped guide rail and the base for driving the heliostat frame to rotate around the horizontal roll. Rotation of the rotating shaft, so as to realize the rotation of the whole heliostat frame around the virtual roll axis in the horizontal direction with a large reduction ratio, and reduce the requirements on the motor drive characteristics such as torque; for the support problem of the heliostat frame, it is adopted in the long axis direction The two-point or multi-point support reduces the deformation in the long axis direction. It is ingeniously designed and has the function of tracking the sun, which can effectively improve the wind resistance problem. The structure is simplified, the reliability is higher, and the maintenance and correction are simpler. It is suitable for large-scale promotion and application.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a specific embodiment of the present invention.

Fig. 2 is a schematic front view of the specific embodiment shown in Fig. 1 .

Fig. 3 is a schematic side view of the specific embodiment shown in Fig. 1 .

FIG. 4 is a schematic top view of the specific embodiment shown in FIG. 1 .

FIG. 5 is a first partial schematic diagram of the specific embodiment shown in FIG. 1 .

Fig. 6 is a partial schematic diagram of another specific embodiment of the present invention.

Fig. 7 is a partial schematic diagram of another specific embodiment of the present invention.

FIG. 8 is a second partial schematic diagram of the specific embodiment shown in FIG. 1 .

Fig. 9 is a partial schematic diagram of another specific embodiment of the present invention.

Fig. 10 is a partial schematic diagram of another specific embodiment of the present invention.

Fig. 11 is a partial schematic diagram of another specific embodiment of the present invention.

Fig. 12 is a partial schematic diagram of another specific embodiment of the present invention.

Fig. 13 is a partial schematic diagram of another specific embodiment of the present invention.

Fig. 14 is a partial schematic diagram III of the specific embodiment shown in Fig. 1 .

FIG. 15 is a first partial schematic diagram of the specific embodiment shown in FIG. 14 .

FIG. 16 is a second schematic top view of the specific embodiment shown in FIG. 14 .

Fig. 17 is a partial schematic view of another specific embodiment of the present invention.

Fig. 18 is a partial schematic view of another specific embodiment of the present invention.

Detailed ways

In order to understand the technical content of the present utility model more clearly, the following examples are given in detail. In this case, the same components are provided with the same reference numerals.

Please refer to Fig. 1-4, the heliostat structure of the utility model to realize the tracking and positioning of the sun includes a heliostat 1, a heliostat frame 2, a heliostat bracket 3, a heliostat mirror driving device 4 and a heliostat A heliostat frame driving device 5, the heliostat frame 2 is rotatably mounted on the heliostat bracket 3, the heliostat frame driving device 5 is respectively connected to the heliostat frame 2 and The heliostat bracket 3 is used to drive the heliostat frame 2 to rotate around a horizontal roll axis 6. The heliostat 1 includes at least two heliostat mirrors 11, and the heliostat mirrors 11 can be Rotationally mounted on the heliostat frame 2, the heliostat mirror driving device 4 is respectively connected to the heliostat frame 2 and the heliostat mirror 11 for driving the heliostat mirror 11 Linked around respective horizontal pitch axes 7 , the horizontal pitch axes 7 are arranged in parallel and perpendicular to the horizontal roll axis 6 .

The heliostat mirror 11 can be mounted on the heliostat frame 2 using any suitable structure. Preferably, the heliostat mirror 11 is rotatably mounted on the heliostat frame 2 in a louver-like structure. Please refer to Figs. 1, 2 and 4, in a specific embodiment of the present invention, the number of said heliostat mirrors 11 is 16, which are divided into eight sub-mirror groups, arranged in parallel, two in each group, coaxial connect.

The heliostat mirror driving device 4 can adopt any suitable structure, please refer to FIG. A transmission part 9, the first driving part 8 is installed on the heliostat frame 2 and connected to the heliostat mirror 11 through the first transmission part 9 so as to drive the heliostat mirror 11 around The respective horizontal and pitch axes 7 are linked.

The arrangement of the first driving part 8 and the first transmission part 9 on the mechanical structure of the heliostat will comprehensively affect the heliostat 1's tracking accuracy, transmission deformation, difficulty of manufacturing and installation, reliability and cost. The arrangement can be divided into the following types: the first transmission part 9 is arranged in the middle and the side is arranged; the first driving part 8 is driven in the middle and driven in the end.

The first driving part 8 and the first transmission part 9 can have various mechanical implementation schemes, all of which can meet the technical requirements of this design, and have their own advantages and disadvantages. Several driving and transmission schemes are listed below. But the principle design is not limited to the following types. Taking the transmission in the middle and the drive in the middle as examples, each transmission and driving scheme is explained.

1) The pitch angle transmission is the synchronous movement between all the heliostat mirrors 11, which is one of the core parts of the heliostat transmission of the present invention.

1. Adopt rack and pinion transmission scheme: the first transmission part 9 includes a box body 91, a rack 92 and several gears 93, the box body 91 is installed on the heliostat frame 2, and the gears 93 respectively installed on the heliostat mirrors 11 and engaged with the rack 92, the rack 92 is movably installed in the box 91, and the first driving part 8 is connected to one of the gears 93 for The gear 93 is driven to rotate or the first driving part 8 is connected to the rack 92 to drive the rack 92 to move linearly. See also shown in Fig. 5, in the specific embodiment of the present utility model, between each group of sub-mirror groups, use smooth rotating shaft 71 to be fixedly connected, each optical axis 71 middle parts are fixedly installed with a gear 93, each sub-mirror group middle part The gears 93 all cooperate with the same rack 92 . The first driving part 8 adopts a pitch axis drive motor, through which the pitch axis drive motor drives one of the gears 93 matched with the rack 92 to rotate, and pushes the rack 92 to perform linear motion in a linear guide mechanism, for example, to realize other gears 93 And each sub-mirror group rotates positively and negatively around its respective horizontal pitch axis 7.

Among them, the linear guide mechanism schemes for the rack 92 to realize linear motion include but are not limited to the following:

(1), using linear bearing scheme: the first transmission part 9 also includes a plurality of linear bearings 94, and a plurality of tooth segments 97 are arranged at intervals on the rack 92, and the linear bearings 94 are installed in the box In the body 91 , the rack 92 is installed in the linear bearing 94 , and the gear 93 engages with the tooth segment 97 . Please refer to Fig. 5, in a specific embodiment of the present invention, the rack 92 includes a sufficiently long polished rod 95 and a plurality of tooth segments 97 of a certain length, and a plurality of tooth segments 97 of a certain length correspond to each The position of the sub-mirror group is arranged in sections and fixedly installed on this long polished rod 95. A plurality of linear bearings 94 are respectively arranged on this long polished rod 95 according to certain rules. The shaft mounting plate 96 clamps and fixes the linear bearing 94 instead of the box body 91 . Through the cooperation between the long polished rod 95 and the linear bearing 94, the gear segment 97 that cooperates with the gear 93 in the middle of the sub-mirror group can move left and right along with the long polished rod 95 along its axial direction to realize the guiding function of the linear motion of the rack.

(2), using chute and ball scheme: the first transmission part 9 also includes a plurality of balls 98 and a rack mounting plate 99, the rack 92 is installed on the rack mounting plate 99, and the teeth The bar mounting plate 99 is located in the box body 91, and the balls 98 are located between the rack mounting plate 99 and the side of the box body 91 and between the rack mounting plate 99 and the box body 91. between the bases. Please refer to Fig. 6, in another specific embodiment of the present utility model, a ball slide is processed on the side of the horizontal pitch axis mounting plate 96 (or the box body 91) and the mounting plate 101 at the bottom of the box body 91. Groove 102, tooth bar 92 are fixedly installed on the rack mounting plate 99 according to the position of corresponding sub-mirror group, the rack mounting plate 99 both sides and the bottom surface are all processed with a ball slide groove 103, and horizontal pitch axis mounting plate 99 (or box Body 91) corresponds to the ball chute 102 of the mounting plate 101 at the bottom of the box body 91, and a certain number of balls 98 are arranged at appropriate positions in the three sets of ball chute (102 and 103) to make them match. The ball 98 slides in the groove to realize the linear motion of the rack 92 in the box body 91 along with the rack mounting plate 99 .

(3), using the guide wheel solution: the first transmission part 9 also includes a plurality of guide wheels 112, the guide wheels 112 are installed in the box 91 and are located under the rack 92 to support the rack 92. Please refer to Fig. 7, in another specific embodiment of the present utility model, the guide wheel 112 is installed on the side of the horizontal pitch axis mounting plate 96 (or box 91) and is located under the rack 92 to support the The rack 92, the rack 92 meshes with the gear 93 in the middle of the sub-mirror group, the first driving part 8 drives the gear 93 to rotate so as to drive the rack 92 to move linearly on the guide wheel 112, and the first driving part 8 can also drive the rack 92 It moves linearly on the guide wheel 112 to drive the gear 93 to rotate.

Among them, the driving schemes to realize the linear motion of the rack include but are not limited to the following:

(1), adopt the scheme of directly driving the sub-mirror group gears: the first driving part 8 is directly connected to the gear 93 so as to directly drive the gear 93 of the sub-mirror group, as shown in Fig. 8, in a specific embodiment of the utility model, the first A driving part 8 is a rotating motor, which drives the gear 93 in the middle of one of the sub-mirror groups to rotate after deceleration, and drives the rack 92 to move linearly through the cooperation of the gear 93 and the rack 92 .

(2) A screw solution is adopted: the first driving part 8 is connected to the rack 92 through a screw 81 and a screw nut 82 to drive the rack 92 to move linearly. Please refer to Fig. 9, in another specific embodiment of the present utility model, the first driving part 8 is a rotating motor, the shaft end of the rotating motor is connected with the screw 81, the rack 92 is connected with the screw nut 82, Through the cooperation between the screw nut 82 and the screw rod 81 , the rotating motor drives the screw rod 81 to rotate, drives the screw nut 82 to move linearly, and realizes the linear movement of the rack 92 .

(3) A direct push scheme is adopted: the first driving part 8 is a linear electric cylinder, a push rod or a hydraulic cylinder so as to directly drive the rack 92 to move linearly.

2. The pulley scheme is adopted: the first transmission part 9 includes several transmission belts 104 and pulleys 105, and two pulleys 105 are respectively installed on the heliostat mirror 11, and the transmission belts 104 are sequentially connected to two adjacent ones. One of the pulleys 105 on the heliostat mirror 11, the first driving part 8 is connected to one of the pulleys 105 for driving the pulley 105 to rotate or the first driving part 8 is connected to the said first driving part 8 One of the transmission belts 104 is used to drive the transmission belt 104 to move linearly. Please refer to Fig. 10, in another specific embodiment of the present utility model, taking the intermediate transmission arrangement as an example, each sub-mirror group is driven by a pulley 105, and is connected on a smooth rotating shaft 71 in the middle of the sub-mirror group Belt pulley 105 is arranged, except that a belt pulley 105 is arranged on the sub-mirror groups at two ends, and two belt pulleys 105 are arranged in the middle of all other sub-mirror groups, and transmission belt 104 connects the pulleys 105 on the adjacent two sub-mirror groups in turn. The first driving part 8, such as a motor, directly drives one of the sub-mirror groups to rotate around its horizontal pitch axis 7 (ie, the smooth rotating shaft 71), and the synchronous linkage of each horizontal pitch axis 7 is realized through the co-direction winding method of the transmission belt 104. Wherein the pulley 105 and the transmission belt 104 may be a synchronous pulley and a synchronous transmission belt.

3. Adopt the worm gear solution: the first transmission part 9 includes a box body 91, a worm 106 and several worm wheels 107, the box body 91 is installed on the heliostat frame 2, and the worm wheels 107 are respectively installed on The heliostat mirror 11 is engaged with the worm 106 , the worm 106 is rotatably installed in the box 91 , and the first driving part 8 is connected to one of the worm wheels 107 for driving the worm wheel 107 Rotation or the first driving component 8 is connected to the worm 106 for driving the worm 106 to rotate. Please refer to Fig. 11, in another specific embodiment of the present utility model, taking the intermediate transmission arrangement as an example, a worm wheel 107 is installed on the smooth shaft 71 in the middle of each sub-mirror group, and the worm 106 can be formed by a long enough polished rod. A section of worm is processed at the upper interval, or a section worm of a certain length is fixedly connected with a circular tube. The worm gears 107 on all smooth rotating shafts 71 are all matched with the worm screws 106, and the box body 91 is omitted, because the worm screws 106 are directly driven to rotate by the first driving part 8 such as a rotating motor, thereby driving all the worm wheels 106 to rotate, so as to realize the rotation of each sub-mirror group synchronous rotation.

4. Pulling rope scheme: the first transmission part 9 includes two pulling ropes 108 and several sheaves 109, and two sheaves 109 are respectively installed on the heliostat mirror 11, one of which is The pulling rope 108 is sequentially and fixedly connected to one of the sheaves 109 on the heliostat mirror 11 in series, and the other pulling rope 108 is sequentially and serially and fixedly connected to the other sheave 109 on the heliostat mirror 11. A sheave 109, the first drive part 8 is connected to one of the sheave 109 for driving the sheave 109 to rotate or the first drive part 8 is respectively connected to two of the pull ropes 108 for driving respectively The two pulling ropes 108 move linearly. Please refer to Fig. 12, in another specific embodiment of the present utility model, taking the intermediate transmission arrangement as an example, the transmission between each sub-mirror group is realized by pulling the pulling rope 108 such as a steel wire rope, and each sub-mirror group Two sheaves 109 are fixedly installed on the smooth rotating shaft 71 in the middle. The sheaves 109 are divided into two groups. The first group of sheaves 109 is connected in series with a single steel wire rope according to the winding method in the figure, and the other group is also connected in series with a single steel wire rope. Reverse series connection, steel wire rope and sheave 109 are fixedly installed with screw 110. Use the first driving part 8 such as a motor to directly drive one of the sub-mirror groups through a reducer to drive the sheave 109 to rotate. Synchronous rotation of mirror groups.

5. A crankshaft transmission scheme is adopted: the first transmission part 9 includes a rigid connecting rod 110 and several crankshafts 111, the crankshafts 111 are installed on the heliostat mirror 11 respectively, and the middle part of the crankshaft 111 is connected to the rigid The connecting rod 110 is rotatably connected, and the first driving part 8 is connected to one of the crankshafts 111 for driving the crankshaft 111 to rotate. Please refer to Fig. 13, in another specific embodiment of the present utility model, taking the intermediate transmission arrangement as an example, the two lenses in the sub-mirror group are fixedly connected by crankshafts 111, and the middle parts of each crankshaft 111 are hinged to the same rigid The connecting rod 110 is connected, and the first driving part 8, such as a motor, directly drives one of the sub-mirror groups through a reducer to drive the crankshaft 111 to rotate. Through the action of the rigid connecting rod 110, the other crankshafts 111 are synchronously driven to realize the linkage of each sub-mirror group.

2) The roll angle rotation is the rotation of the heliostat frame 2 relative to the heliostat bracket 3, which replaces the common altitude/azimuth angle rotation and fundamentally changes the tracking form of the heliostat. The rotation of the horizontal roll axis is also one of the cores to achieve sun tracking.

The heliostat bracket 3 can adopt any suitable structure, preferably, the heliostat bracket 3 includes at least two arc-shaped guide rails 31 and a base 32, and the arc-shaped guide rails 31 are rotatably mounted on the On the base 32, the heliostat frame 2 is installed on the arc-shaped guide rail 31, and the heliostat frame drive device 5 is connected to the arc-shaped guide rail 31 and the base 32 respectively. To drive the heliostat frame 2 to rotate around the horizontal roll axis 6 . The base 32 is rotatably provided with two spaced rotating shafts 33 , and the arc-shaped guide rail 31 abuts against the two rotating shafts 33 .

Please refer to Figs. 14 and 15, in a specific embodiment of the present invention, in order to solve the key problems such as the support of the whole mirror frame and the rotation around a set axis. In the utility model, two or more arc-shaped guide rails 31 of equal and large radius are equally divided under the heliostat frame 2 to realize two-point or multi-point support. One of the arc-shaped guide rails 31 and the base 32 The drive module is arranged on the top to drive the entire heliostat frame 2 . The arc-shaped guide rail 31 arc top is downward, then supports the arc-shaped guide rail 31 from below the arc-shaped guide rail 31 with a pair of rotating shafts 33 (such as a pair of polished rods), and the rotating shaft 33 is installed on the base 32 by the bearing 34, so three The base 32 supports the heliostat frame 2 through six pairs of bearings 34 . In this way, the center positions of the three arc-shaped guide rails 31 are connected to the formed virtual axis (ie, the horizontal rolling axis 6 ). When there is a torque driving the whole heliostat frame 2 to rotate around the virtual axis, the whole heliostat frame 2 will realize the rotation around the virtual axis by relying on the rolling of the supporting bearing 34 . This type of design can obtain better stability and a larger driving force arm, and it is easy to implement two or more points of support for the heliostat frame 2, reducing the deflection deformation caused by gravity.

The heliostat frame driving device 5 can adopt any suitable structure, please refer to FIG. and the second transmission part 52, the second driving part 51 is installed on the base 32 and connected to the arc-shaped guide rail 31 through the second transmission part 52 so as to drive the heliostat frame 2 around the The horizontal roll axis 6 rotates.

The designs of the second driving part 51 and the second transmission part 52 include but are not limited to the following types, taking the drive in the middle of the horizontal rolling shaft 6 as an example:

(1) Using rack and pinion or synchronous belt: the second transmission part 52 includes an arc-shaped rack 53 or an arc-shaped synchronous belt 54 and a transmission gear 55, and the arc-shaped rack 53 or arc-shaped synchronous The belt 54 is installed on the arc-shaped guide rail 31 , and the transmission gear 55 is installed on the second driving part 51 and engages with the arc-shaped rack 53 or the arc-shaped synchronous belt 54 . See also shown in Fig. 16, in the specific embodiment of the present utility model, on the circular arc-shaped guide rail 31 of the middle part, a circular arc-shaped tooth bar 53 is fixedly installed on the inner circular surface of the circular arc-shaped guide rail 31, and fixed on the base 32 of the middle part A second drive member 51 such as a drive motor is installed. The drive motor cooperates with the arc-shaped rack 53 through the transmission gear 55 at the output shaft end to drive the whole heliostat frame 2 around the virtual axis formed by connecting the center positions of the three arc-shaped guide rails 31 (that is, the horizontal roll axis 6 ) turn. Please refer to FIG. 17 , in another specific embodiment of the present invention, the arc-shaped rack 53 is replaced by an arc-shaped synchronous belt 54 .

(2) Using a linkage mechanism: the second driving part 51 adopts a linear electric cylinder or a linear hydraulic cylinder, and the two ends of the linear electric cylinder or linear hydraulic cylinder are respectively rotatably connected to the base 32 and the arc-shaped The middle part of guide rail 31 constitutes a link mechanism. Please refer to Fig. 18, in another specific embodiment of the present utility model, the two ends of the linear electric cylinder or hydraulic cylinder are respectively connected with the middle part of the arc-shaped guide rail 31 and the base 32 through hinges, forming a linkage mechanism , by changing the telescopic end of the electric cylinder or hydraulic cylinder to change the length of its equivalent connecting rod, thereby changing the geometric parameters such as the angle of the equivalent connecting rod mechanism. The rotation of the heliostat frame 2 around its virtual horizontal roll axis 6 at a limited angle is realized.

The utility model integrates a plurality of heliostat mirrors 11 into a larger heliostat frame 2, and the heliostat mirrors 11 are installed in a manner similar to blinds, and the heliostat mirrors 11 have a small width, which can effectively To improve the wind resistance problem. Using the principle of Fresnel reflectors, the large-area curved reflector is divided into small reflective plane mirrors, and then arranged in one-dimensional linear parallelism, and the angle difference between the small reflective surfaces is adjusted to realize the sunlight of each small reflective surface Spot focus. The utility model can realize that a group of heliostat frames 2 use the driving mechanism uniformly, which not only reduces the number of driving mechanisms, but also saves a large number of mechanical hard limits through accurate measurement and design, and can realize the all-weather operation of the heliostat system Continuous operation with increased reliability and easier maintenance and calibration. The main technical problems to be solved by the utility model are as follows: realize the precise synchronous rotation among multiple heliostat mirrors 11; realize the rotation of the whole heliostat frame 2 around the virtual rolling axis in the horizontal direction; realize the large The reduction ratio reduces the torque requirements for driving the top grade; the deformation of the frame of the large-size heliostat.

To sum up, the heliostat of the present utility model realizes sun-tracking positioning with ingenious structural design, has the function of tracking the sun, can effectively improve the problem of wind resistance, has a simplified structure, higher reliability, simpler maintenance and correction, and is suitable for large-scale Promote apps.

In this specification, the invention has been described with reference to specific embodiments thereof. However, it is obvious that various modifications and changes can be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims (17)

1. heliostat structure that realizes solar tracking location; It is characterized in that; Comprise heliostat, heliostat mirror holder, heliostat support, settled date mirror mirror drive and heliostat mirror holder drive unit; Said heliostat mirror holder is rotatable to be installed on the said heliostat support; Said heliostat mirror holder drive unit connects said heliostat mirror holder respectively and said heliostat support is used to drive said heliostat mirror holder around a horizontal wobble shaft rotation, and said heliostat comprises at least two settled date mirror mirrors, and said settled date mirror mirror is rotatable to be installed on the said heliostat mirror holder; Said settled date mirror mirror drive connects said heliostat mirror holder and said settled date mirror mirror respectively and is used to drive said settled date mirror mirror around separately horizontal pitch axis interlock, said horizontal pitch axis laterally arrange and with vertical setting of said horizontal wobble shaft.

2. the heliostat structure of realization solar tracking according to claim 1 location is characterized in that said settled date mirror mirror adopts the venetian blind type structure to turn and is installed on the said heliostat mirror holder.

3. the heliostat structure of realization solar tracking according to claim 1 location; It is characterized in that; Said settled date mirror mirror drive comprises first driver part and first drive disk assembly, drives said settled date mirror mirror around separately horizontal pitch axis interlock thereby said first driver part is installed on the said heliostat mirror holder and connect said settled date mirror mirror through said first drive disk assembly.

4. the heliostat structure of realization solar tracking according to claim 3 location; It is characterized in that; Said first drive disk assembly comprises casing, tooth bar and plurality of gears; Said casing is installed on the said heliostat mirror holder; Said gear is installed on the said settled date mirror mirror respectively and meshes said tooth bar, and said tooth bar is removable to be installed in the said casing, and said first driver part connects one of said gear and is used to drive that this gear rotates or said first driver part connects said tooth bar and is used to drive said rack linear and moves.

5. the heliostat structure of realization solar tracking according to claim 4 location; It is characterized in that; Said first drive disk assembly also comprises a plurality of linear bearings, is arranged at intervals with a plurality of tooth sections on the said tooth bar, and said linear bearing is installed in the said casing; Said tooth bar is installed in the said linear bearing, the said tooth section of said gearing mesh.

6. the heliostat structure of realization solar tracking according to claim 4 location; It is characterized in that; Said first drive disk assembly also comprises a plurality of balls and tooth bar installing plate; Said tooth bar is installed on the said tooth bar installing plate, and said tooth bar installing plate is arranged in said casing, and said ball lays respectively between the side of said tooth bar installing plate and said casing and between the bottom surface of said tooth bar installing plate and said casing.

7. the heliostat structure of realization solar tracking according to claim 4 location is characterized in that said first drive disk assembly also comprises a plurality of guide wheels, and said guide wheel is installed in the said casing and is positioned at the said tooth bar of said tooth bar lower support.

8. the heliostat structure of realization solar tracking according to claim 4 location; It is characterized in that; Thereby said first driver part is straight line electric cylinder, push rod or hydraulic cylinder directly to be driven said rack linear and moves, and perhaps said first driver part is connected said tooth bar through screw mandrel and is used to drive said rack linear and moves with the feed screw nut.

9. the heliostat structure of realization solar tracking according to claim 3 location; It is characterized in that; Said first drive disk assembly comprises some driving-belts and belt wheel; On the said settled date mirror mirror two said belt wheels are installed respectively; Said driving-belt connects one of them belt wheel on adjacent two said settled date mirror mirrors successively, and said first driver part connects one of said belt wheel and is used to drive that this belt wheel rotates or said first driver part connects one of said driving-belt and is used to drive this driving-belt straight line and moves.

10. the heliostat structure of realization solar tracking according to claim 3 location; It is characterized in that; Said first drive disk assembly comprises casing, worm screw and some worm gears; Said casing is installed on the said heliostat mirror holder; Said worm gear is installed on the said settled date mirror mirror respectively and meshes said worm screw, and said worm screw is rotatable to be installed in the said casing, and said first driver part connects one of said worm gear and is used to drive that this worm gear rotates or said first driver part connects said worm screw and is used to drive said worm screw and rotates.

11. the heliostat structure of realization solar tracking according to claim 3 location; It is characterized in that; Said first drive disk assembly comprises two pulling ropes and some sheaves; On the said settled date mirror mirror two said sheaves are installed respectively; Wherein said pulling rope is connected successively and is fixedly connected one of them sheave on the said settled date mirror mirror, and the said pulling rope of another root differential concatenation successively is fixedly connected another sheave on the said settled date mirror mirror, and said first driver part connects one of said sheave and is used to drive that this sheave rotates or said first driver part connects two said pulling ropes respectively and is used for driving respectively two said pulling rope straight lines and moves.

12. the heliostat structure of realization solar tracking according to claim 3 location; It is characterized in that; Said first drive disk assembly comprises rigid links and some bent axles; Said bent axle is installed in respectively on the said settled date mirror mirror, and the middle part of said bent axle and said rigid links are rotatably connected, and said first driver part connects one of said bent axle and is used to drive this bent axle rotation.

13. the heliostat structure of realization solar tracking according to claim 1 location; It is characterized in that; Said heliostat support comprises at least two arc-shaped rails and base; Said arc-shaped rail is rotatable to be installed on the said base, and said heliostat mirror holder is installed on the said arc-shaped rail, and said heliostat mirror holder drive unit connects said arc-shaped rail respectively and said base is used to drive said heliostat mirror holder around said horizontal wobble shaft rotation.

14. the heliostat structure of realization solar tracking according to claim 13 location is characterized in that, turns on the said base spaced two rotating shafts are set, said arc-shaped rail is resisted against in two said rotating shafts.

15. the heliostat structure of realization solar tracking according to claim 13 location; It is characterized in that; Said heliostat mirror holder drive unit comprises second driver part and second drive disk assembly, drives said heliostat mirror holder and rotates around said horizontal wobble shaft thereby said second driver part is installed on the said base and connect said arc-shaped rail through said second drive disk assembly.

16. the heliostat structure of realization solar tracking according to claim 15 location; It is characterized in that; Said second drive disk assembly comprises arc-shaped rack or circular arc band and transmission gear synchronously; Said arc-shaped rack or circular arc synchronously band are installed on the said arc-shaped rail, and said transmission gear is installed on said second driver part and meshes said arc-shaped rack or circular arc is with synchronously.

17. the heliostat structure of realization solar tracking according to claim 15 location; It is characterized in that; Said second drive disk assembly comprises straight line electric cylinder or straight line hydraulic cylinder, be rotatably connected the respectively middle part of said base and said arc-shaped rail, the two ends of said straight line electric cylinder or straight line hydraulic cylinder.

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