Heliostat with cleaning device

Abstract

The present application relates to the field of solar thermal power generation, and particularly relates to a heliostat with a cleaning device, which comprises a heliostat main system and a heliostat cleaning system; the heliostat main system comprises a heliostat, a horizontal support, a heliostat framework, a stand, a base, a heliostat mounting block and a heliostat rotating motor; the heliostat comprises a left mirror body and a right mirror body, the left mirror body and the right mirror body are respectively fixed at two ends of the horizontal support through respective corresponding heliostat frameworks, the horizontal support is connected with the stand through the heliostat mounting block; the bottom of the stand is rotationally connected with the base, the heliostat mounting block is hingedly connected with the top of the stand, so as to realize vertical rotation, the heliostat rotating motor is installed outside the stand, so as to control the rotation of the stand to realize horizontal rotation of the heliostat; the heliostat cleaning system comprises a water storage tank, a lifting cleaning mechanism, an angle control mechanism and an angle linkage rod.

Description

Technical Field

[0001] This invention relates to the field of solar thermal power generation, and more specifically to a heliostat with a cleaning device. Background Technology

[0002] Solar thermal power generation, with its built-in large-scale, low-cost, safe, and environmentally friendly energy storage system, can achieve stable power generation and can replace thermal power as the baseload power source of the power system. Among these components, the heliostat system is the most important module of a solar thermal power plant. A 50MW tower solar thermal power plant contains tens of thousands of heliostats. A key challenge of this technology is how to efficiently and conveniently clean heliostats in different orientations simultaneously, while avoiding water waste and pollution.

[0003] Currently, the cleaning processes for heliostat mirrors in large-scale solar thermal power plants generally employ vehicle-mounted cleaning and manual cleaning. As described in CN201710425897.6 and CN107008684A, cleaning vehicles are used to directly rinse the mirrors with high-pressure water, or cleaning devices are used to scrub the mirrors while simultaneously rinsing them with high-pressure water. Manual cleaning involves hiring workers to manually clean the heliostats. For large-scale mirror fields, these methods are extremely inefficient, result in significant water waste, and are very costly in terms of cleaning water, severely impacting the economic viability of solar thermal power plants.

[0004] Given the realities of concentrated solar power (CSP) heliostat fields—namely, the large number of heliostats and the extremely high time and cost of cleaning them uniformly across different orientations—and the inefficiency of using cleaning vehicles to clean each heliostat individually, which also disrupts their normal operation, further complicates the issue. Wastewater recovery after cleaning the heliostats is also difficult, leading to water waste and pollution. Therefore, existing heliostat cleaning technologies require further improvement and refinement to be suitable for the rapidly developing CSP industry. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a heliostat with a cleaning device, which solves the problem of efficient cleaning of heliostats in different postures at all times in the mirror field, and on this basis, simultaneously realizes the recycling of wastewater generated during the cleaning process of heliostats, thereby reducing the waste and pollution of water resources.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A heliostat with a cleaning device includes: a heliostat main body system and a heliostat cleaning system; the heliostat main body system includes: a heliostat, a horizontal support, a heliostat frame, a column, a base, a heliostat mounting block, and a heliostat rotary motor; the heliostat includes a left mirror body and a right mirror body, the left mirror body and the right mirror body are respectively fixed to the two ends of the horizontal support by their respective corresponding heliostat frames, the horizontal support is connected to the column by the heliostat mounting block; the bottom of the column is rotatably connected to the base, and the heliostat mounting block is hinged to the top of the column to achieve vertical rotation, the heliostat rotary motor is installed on the outside of the column to control the rotation of the column to achieve horizontal rotation of the heliostat; the heliostat cleaning system includes: a water tank, a lifting cleaning mechanism, an angle control mechanism, and an angle linkage rod, the two ends of the angle linkage rod are provided with sleeve sliders, the bottom of the heliostat is provided with a slider guide rail, the two ends of the angle linkage rod are hinged in the sleeve sliders, and the sleeve sliders are disposed on the slider guide rail.

[0008] Preferably, the water storage tank is composed of a bottom plate and the inner wall of a column. The bottom plate of the water storage tank is provided with a drain hole, which is connected to a drain pipe provided in the base.

[0009] Preferably, the lifting and cleaning mechanism includes: a drive screw, a screw motor, a lifting plate, a cleaning material fixing plate, a cleaning material plate, a flexible support block, a rotating hinge, and a flipping drive gear; the lifting plate is threadedly connected to the drive screw, and the rotating hinge is disposed on both sides of the lifting plate; there are two cleaning material fixing plates, which are connected to the rotating hinges on both sides of the lifting plate through the flexible support block; the cleaning material plate is fixed to the surface of the cleaning material fixing plate, and the flipping drive gear is fixed to the rotating hinge shaft.

[0010] Preferably, the angle control mechanism includes: a flip control slider, a slider linkage, an elastic hinge, a drive rack, and a cleaning tank. The top of the slider linkage is connected to the angle linkage rod, the bottom of the slider linkage is connected to the flip control slider, and the cleaning tank is arranged facing the cleaning material plate.

[0011] The cleaning process is automatically linked by a lifting and angle control mechanism.

[0012] Preferably, the top of the column is provided with a linkage groove.

[0013] In summary, the beneficial effects of this invention are as follows:

[0014] 1. The heliostat with a cleaning device described in this invention achieves automatic and rapid cleaning of the heliostat in different postures by adjusting its own movement, thereby reducing energy consumption and saving time costs.

[0015] 2. The heliostat with a cleaning device described in this invention is an automated cleaning device that can complete the cleaning of a large number of heliostats in a short time with high efficiency.

[0016] 3. The heliostat with a cleaning device described in this invention realizes the collection of rainwater and the recycling of wastewater after cleaning, thereby reducing the waste and pollution of water resources. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the lifting and cleaning mechanism in this invention;

[0020] Figure 4 This is a schematic diagram of the angle control mechanism in this invention;

[0021] Figure 5 This is a schematic diagram of the cleaning process of the present invention. Detailed Implementation

[0022] The following specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Example 1:

[0025] according to Figure 1As shown, a heliostat with a cleaning device includes: a heliostat main body system 100 and a heliostat cleaning system 200; the heliostat main body system 100 includes: a heliostat 11, a horizontal support 12, a heliostat frame 13, a column 14, a base 15, a heliostat mounting block 16, and a heliostat rotation motor; the heliostat 11 includes a left mirror body and a right mirror body, which are respectively fixed to the two ends of the horizontal support 12 by their respective corresponding heliostat frames 13, and the horizontal support 12 is connected to the column 14 by the heliostat mounting block 16; the column... The bottom of column 14 is rotatably connected to the base 15, the heliostat mounting block 16 is hinged to the top of column 14, and the heliostat rotary motor is installed on the outside of column 14; the heliostat cleaning system 200 includes: a water tank 210, a lifting cleaning mechanism 220, an angle control mechanism 230 and an angle linkage rod 3, both ends of the angle linkage rod 3 are provided with sleeve sliders 31, the bottom of the heliostat 11 is provided with a slider guide rail 32, both ends of the angle linkage rod 3 are hinged in the sleeve sliders 31, the sleeve sliders 31 are set on the slider guide rail 32, and the top of column 14 is provided with a linkage rod groove 141.

[0026] according to Figure 2 As shown, the water storage tank 210 is composed of a water storage tank bottom plate 211 and the inner wall of the column 14. The water storage tank bottom plate 211 is provided with a drain hole 212, which is connected to a drain pipe 151 provided in the base 15.

[0027] according to Figure 3 As shown, the lifting and cleaning mechanism 220 includes: a drive screw 221, a screw motor 222, a lifting plate 223, a cleaning material fixing plate 224, a cleaning material plate 225, a flexible support block 226, a rotating hinge 227, and a flipping drive gear 228; the lifting plate 223 is threadedly connected to the drive screw 221, and the rotating hinge 227 is arranged on both sides of the lifting plate 223; there are two cleaning material fixing plates 224, which are connected to the rotating hinge 227 on both sides of the lifting plate 223 through the flexible support block 226; the cleaning material plate 225 is fixed on the surface of the cleaning material fixing plate 224; and the flipping drive gear 228 is fixed to the rotating shaft of the rotating hinge 227.

[0028] according to Figure 4 As shown, the angle control mechanism 230 includes: a flip control slider 231, a slider connecting rod 232, an elastic hinge 233, a drive rack 234, and a cleaning tank 235. The top of the slider connecting rod 232 is connected to the angle linkage rod 3, and the bottom of the slider connecting rod 232 is connected to the flip control slider 231. The cleaning tank 235 is arranged in the direction of the cleaning material plate 225.

[0029] according to Figure 5As shown, when the device performs cleaning, ① first, rotate the heliostat 11 to the position shown in the figure, that is, the position where the symmetrical plane of the left and right heliostats is parallel to the unfolded surface of the lifting and cleaning mechanism 220. ② Start the lead screw motor 222 to drive the drive lead screw 221 to raise the lifting plate 223. When the flip drive gear 228 touches the drive rack 234 of the angle control mechanism 230, the rotating hinge 227 will drive the cleaning material fixing plate 224 to flip outward. When the cleaning material fixing plate 224 is fully unfolded, it will be higher than the surface of the heliostat 11. ③ At this time, drive the heliostat rotation motor to rotate the column 14 to drive the heliostats 11 on both sides to rotate. When the upper surface of the heliostat 11 rotates to the position of the cleaning material plate 225 below the cleaning material fixing plate 224, cleaning can be performed. ④ After cleaning, the heliostat 11 rotates back to the position shown in the figure, and the reverse screw motor 222 retracts the cleaning material fixing plate 224. During the retraction process, the cleaning material plate 225 rubs against the cleaning tank 235 and self-clamps. At the same time, the dirt enters the water storage tank 210 and is discharged from the drain hole 212 through the drain pipe 151.

[0030] The automatic angle linkage adaptation process is as follows: When the heliostat 11 deflects vertically, it will drive the angle linkage rod 3 to deflect together. Under the action of the slider linkage 232, the flip control sliders 231 on both sides slide up and down respectively. At this time, cleaning is carried out. Since the heights of the flip control sliders 231 on both sides are different, during the process of the lifting plate 223 rising, the cleaning material fixing plate 224 on the side that first contacts the drive rack 234 will flip first, while the cleaning material fixing plate 224 on the other side will flip later, thus forming an angle difference. Since the angle linkage rod 3 and the heliostat 11 are connected to the deflection, the unfolding angle of the cleaning material fixing plate 224 can adaptively maintain correspondence with the deflection angle of the heliostat 11.

Claims

1. A heliostat with a cleaning device, characterized in that, include: Heliostat main body system (100) and heliostat cleaning system (200); The heliostat main system (100) includes: a heliostat (11), a horizontal support (12), a heliostat frame (13), a column (14), a base (15), a heliostat mounting block (16), and a heliostat rotary motor; the heliostat (11) includes a left mirror body and a right mirror body, the left mirror body and the right mirror body are respectively fixed to the two ends of the horizontal support (12) through their respective corresponding heliostat frames (13), the horizontal support (12) is connected to the column (14) through the heliostat mounting block (16); the bottom of the column (14) is rotatably connected to the base (15), the heliostat mounting block (16) is hinged to the top of the column (14), and the heliostat rotary motor is installed on the outside of the column (14); The heliostat cleaning system (200) includes: a water tank (210), a lifting cleaning mechanism (220), an angle control mechanism (230), and an angle linkage rod (3). The angle linkage rod (3) has sleeve sliders (31) at both ends. The bottom of the heliostat (11) is provided with a slider guide rail (32). The two ends of the angle linkage rod (3) are hinged in the sleeve sliders (31). The sleeve sliders (31) are set on the slider guide rail (32).

2. A heliostat with cleaning device according to claim 1, characterized in that The water storage tank (210) is composed of a bottom plate (211) and the inner wall of a column (14). A drain hole (212) is provided on the bottom plate (211), and the drain hole (212) is connected to a drain pipe (151) provided in the base (15).

3. A heliostat with a cleaning device according to claim 1, characterized in that, The lifting and cleaning mechanism (220) includes: a drive screw (221), a screw motor (222), a lifting plate (223), a cleaning material fixing plate (224), a cleaning material plate (225), a flexible support block (226), a rotating hinge (227), and a flipping drive gear (228); the lifting plate (223) is threadedly connected to the drive screw (221), and the rotating hinge (227) is disposed on both sides of the lifting plate (223); there are two cleaning material fixing plates (224), and they are connected to the rotating hinges (227) on both sides of the lifting plate (223) through the flexible support block (226); the cleaning material plate (225) is fixed on the surface of the cleaning material fixing plate (224), and the flipping drive gear (228) is fixed to the rotating shaft of the rotating hinge (227).

4. A heliostat with a cleaning device according to claim 3, characterized in that, The angle control mechanism (230) includes: a flip control slider (231), a slider connecting rod (232), an elastic hinge (233), a drive rack (234), and a cleaning tank (235). The top of the slider connecting rod (232) is connected to the angle linkage rod (3), and the bottom of the slider connecting rod (232) is connected to the flip control slider (231). The cleaning tank (235) is arranged in the direction of the cleaning material plate (225).

5. A heliostat with cleaning device according to claim 1, characterized in that, The top of the column (14) is provided with a linkage groove (141).

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