Tower type photo-thermal power station heliostat cleaning system

Abstract

The invention discloses a tower type photo-thermal power station heliostat cleaning system which comprises a walking track, a walking mechanism and a cleaning mechanism, the walking track is fixedly installed on the ground of a tower type photo-thermal power station through a guide rail support, the walking mechanism is hung on a guide rail of the walking track through walking wheels, and the cleaning mechanism is placed in the walking mechanism. The walking mechanism can walk to the heliostat needing to be cleaned along the walking track, after the heliostat is adjusted to be in a proper state, the cleaning mechanism moves to the heliostat from the walking mechanism, accumulated dust on the heliostat is removed in the modes of air injection, water sprinkling, wiping, scraping and the like, the reflectivity of the heliostat is improved, the photo-thermal conversion efficiency of a condensation system is guaranteed, and the service life of the heliostat is prolonged. The heliostat cleaning system is a key technology for realizing automatic cleaning of the tower type photo-thermal power station.

Description

Technical Field

[0001] The present invention relates to the field of tower-type solar thermal power stations, and in particular to a heliostat cleaning system for a tower-type solar thermal power station. Background Technology

[0002] With the rapid development of clean energy demand, solar power generation has become one of the important sources of clean energy. In the northern plateau desert and desert areas, drought, little rain and long sunshine hours provide a good natural environment for the construction of tower solar thermal power stations.

[0003] As a key component of the tower solar power station concentrating system, the reflective performance of the heliostat will directly affect the light-to-heat conversion efficiency of the concentrating system. Affected by the windy and sandy weather in the desert area, the dust accumulated on the surface of the heliostat will seriously affect its reflective performance. Therefore, it is necessary to clean the surface of the heliostat to improve the reflectivity of the heliostat and ensure the light-to-heat conversion efficiency of the concentrating system.

[0004] Cleaning robots are used in many scenarios, but in the emerging solar thermal industry, especially in the new application site of tower solar heliostat field, there are no mature cleaning robots yet, and existing industrial robots or cleaning robots for specific scenarios are difficult to apply directly. SUMMARY OF THE INVENTION

[0005] The purpose of the present invention is to provide a cleaning system that can automatically remove dust from the surface of a heliostat in order to solve the above problem.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a tower-type solar thermal power station heliostat cleaning system, including a walking track, a walking mechanism, and a cleaning mechanism, characterized in that the walking track is fixedly installed on the ground of the tower-type solar thermal power station through a guide rail bracket, the walking mechanism is suspended on the guide rail of the walking track through a walking wheel, and the cleaning mechanism is placed inside the walking mechanism; The walking track includes a guide rail bracket and a guide rail, the guide rail is fixed on the guide rail bracket, the lower end of the guide rail bracket is fixedly connected to the ground, the upper end of the guide rail bracket is supported below the guide rail, and the installation position of the guide rail is adapted to the position of the heliostat; The walking mechanism comprises a baffle, a walking mechanism box, a walking mechanism electronic control system, a walking mechanism box bracket, a walking wheel bracket, a walking wheel motor, a walking wheel, a baffle gear, and a baffle motor. The walking mechanism box is a rectangular parallelepiped structure, and the lower half is a space for holding the cleaning mechanism. The baffle is connected to the lower edge of the walking mechanism box in a hinged manner. A pair of baffle gears are meshed with each other, one of the baffle gears is fixedly connected to the baffle, and the other baffle gear is installed on the output shaft of the baffle motor. The baffle motor is fixedly installed below the walking mechanism box. The walking mechanism electronic control system is installed on the upper half of the walking mechanism box. The walking mechanism box bracket is fixedly connected to the top of the walking mechanism box, and the walking wheel bracket is fixedly connected to the walking mechanism box bracket. The walking wheel motor and the walking wheel are installed on the walking wheel bracket; The cleaning mechanism includes a McRae wheel, a cleaning mechanism housing, an air jet pipe, an electromagnetic valve, an air pump, a cleaning brush motor, an air jet nozzle, a water tank, an electronic control system for the cleaning mechanism, a McRae wheel drive motor, a water jet nozzle, a cleaning brush, and a cleaning scraper. The cleaning mechanism housing is a hollow rectangular parallelepiped structure. The McRae wheel drive motor is installed below the cleaning mechanism housing. The output shaft of the McRae wheel drive motor is fixedly connected to the McRae wheel. The water jet nozzle is fixedly installed below the front end of the cleaning mechanism housing and is connected to the water tank. The water tank is installed inside the cleaning mechanism housing. The electronic control system for the cleaning mechanism is installed inside the cleaning mechanism housing. The cleaning brush motor is fixedly installed in the middle of the cleaning mechanism housing. The output shaft of the cleaning brush drive motor extends below the cleaning mechanism housing and is fixedly connected to the cleaning brush. The cleaning scraper is installed below the rear side of the cleaning mechanism housing. The air jet nozzle is fixedly installed below the left and right sides and the front side of the cleaning mechanism housing and is connected to the electromagnetic valve and the air pump through the air jet pipe.

[0007] The beneficial effects of the present invention are as follows: in a tower-type solar thermal power station heliostat cleaning system of the present invention, the walking track is laid according to the heliostat field layout, so that the walking mechanism can accurately reach the position of the heliostat to be cleaned, the cleaning mechanism moves from the walking mechanism to the surface of the heliostat, and uses jetting, sprinkling, wiping, and scraping to remove dust on the surface of the heliostat, thereby realizing automatic removal of dust on the surface of the heliostat. Brief Description of the Figures

[0008] Figure 1 This is a schematic diagram of the layout of the heliostat cleaning system for a tower-type solar thermal power station.

[0009] Figure 2 This is a schematic diagram of the preparation work of the heliostat cleaning system of a tower-type solar thermal power station.

[0010] Figure 3 This is a schematic diagram of the cleaning operation of the heliostat cleaning system of a tower-type solar thermal power station.

[0011] Figure 4 ​This is a schematic diagram of the installation of the walking track of the heliostat cleaning system of a tower-type solar thermal power station.

[0012] Figure 5 This is a structural diagram of the walking mechanism of the heliostat cleaning system of a tower-type solar thermal power station.

[0013] Figure 6 This is a top view of the cleaning mechanism of the heliostat cleaning system of a tower-type solar thermal power station.

[0014] Figure 7 This is a bottom view of the cleaning mechanism of the heliostat cleaning system of a tower-type solar thermal power station.

[0015] In the figure, 1, walking track, 2, walking mechanism, 3, cleaning mechanism, 4, heliostat, 1-1, guide rail, 1-2, guide rail bracket, 2-1, baffle, 2-2, walking mechanism box, 2-3, walking mechanism electronic control system, 2-4, walking mechanism box bracket, 2-5, walking wheel bracket, 2-6, walking wheel motor, 2-7, walking wheel, 2-8, baffle gear, 2-9, baffle motor, 3-1, McRae wheel, 3-2, cleaning mechanism box, 3-3, jet pipe, 3-4, solenoid valve, 3-5, air pump, 3-6, cleaning brush motor, 3-7, jet nozzle, 3-8, water tank, 3-9, cleaning mechanism electronic control system, 3-10, McRae wheel drive motor, 3-11, water nozzle, 3-12, cleaning brush, 3-13, cleaning scraper. Specific implementation method

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] For specific implementation examples, please refer to the attached Figures 1 to 3 , a tower-type solar thermal power station heliostat cleaning system, comprising a walking track 1, a walking mechanism 2, and a cleaning mechanism 3, wherein the walking track 1 is fixedly installed on the ground of the tower-type solar thermal power station through a guide rail bracket 1-2, the walking mechanism 2 is suspended on the guide rail 1-1 of the walking track 1 through a walking wheel 2-7, and the cleaning mechanism 3 is placed inside the walking mechanism 2; Refer to the attached Figures 1 to 4The walking track 1 includes a guide rail bracket 1-2 and a guide rail 1-1, the guide rail 1-1 is fixed on the guide rail bracket 1-2, the lower end of the guide rail bracket 1-2 is fixedly connected to the ground, the upper end of the guide rail bracket 1-2 is supported below the guide rail 1-1, the guide rail 1-1 is an equidistant double guide rail, and the installation position of the guide rail 1-1 is adapted to the position of the heliostat 4; Refer to the attached Figure 2 and Figure 5 , the walking mechanism 2 includes a baffle 2-1, a walking mechanism box 2-2, a walking mechanism electric control system 2-3, a walking mechanism box bracket 2-4, a walking wheel bracket 2-5, a walking wheel motor 2-6, a walking wheel 2-7, a baffle gear 2-8, and a baffle motor 2-9. The walking mechanism box 2-2 is a rectangular parallelepiped structure, and its lower half is a space for accommodating the cleaning mechanism 3. The baffle 2-1 is connected to the lower edge of the walking mechanism box 2-2 in a hinged manner. A pair of baffle gears 2-8 are meshed with each other, and one of the baffle gears 2-8 is fixedly connected to the baffle 2-1. Another baffle gear 2-8 is installed on the output shaft of the baffle motor 2-9, the baffle 2-1 motor is fixedly installed below the walking mechanism box 2-2, the upper part of the walking mechanism box 2-2 is installed with the walking mechanism electronic control system 2-3, the upper part of the walking mechanism box 2-2 is fixedly connected with two walking mechanism box brackets 2-4, each walking mechanism box bracket 2-4 is fixedly connected with two walking wheel brackets 2-5, the walking wheel bracket 2-5 is installed with the walking wheel motor 2-6 and the walking wheel 2-7, and the output shaft of the walking wheel motor 2-6 is connected with the walking wheel 2-7; Refer to the attached Figures 6 to 7The cleaning mechanism 3 includes a McRae wheel 3-1, a cleaning mechanism box 3-2, an air jet pipe 3-3, a solenoid valve 3-4, an air pump 3-5, a cleaning brush motor 3-6, an air jet nozzle 3-7, a water tank 3-8, a cleaning mechanism electronic control system 3-9, a McRae wheel drive motor 3-10, a water jet nozzle 3-11, a cleaning brush 3-12, and a cleaning scraper 3-13. The cleaning mechanism box 3-2 is a hollow rectangular parallelepiped structure. Four McRae wheel drive motors 3-10 are installed under the cleaning mechanism box 3-2 and are distributed at the four corners. The output shaft of the McRae wheel drive motor 3-10 is fixedly connected to the McRae wheel 3-1, and the water jet nozzle 3-11 is fixedly installed. It is installed below the front end of the cleaning mechanism box 3-2 and connected to the water tank 3-8. The water tank 3-8 is installed inside the cleaning mechanism box 3-2. The cleaning mechanism electric control system 3-9 is installed inside the cleaning mechanism box 3-2. The cleaning brush motor 3-6 is fixedly installed in the middle position of the cleaning mechanism box 3-2. The output shaft of the cleaning brush motor 3-6 extends below the cleaning mechanism box 3-2 and is fixedly connected to the cleaning brush 3-12. The cleaning scraper 3-13 is installed below the rear side of the cleaning mechanism box 3-2. The air nozzle 3-7 is installed below the left and right sides and the front side of the cleaning mechanism box 3-2, and is connected to the solenoid valve 3-4 and the air pump 3-5 through the air jet pipe 3-3.

[0018] Referring to all the attached drawings, the working process of a tower-type CSP heliostat cleaning system is: Under the control of the walking mechanism electronic control system 2-3, the four walking wheels 2-7 of the walking mechanism 2 roll in the same direction along the guide rail 1-1 of the walking track 1. After walking to the position of the heliostat 4 that needs to be cleaned, the angle of the heliostat 4 is adjusted to match the height of the walking mechanism 2. The baffle motor 2-9 rotates to drive a pair of mutually meshing baffle gears 2-8 to rotate, so that the baffle 2-1 opens and rests on the heliostat 4. Under the control of the cleaning mechanism electronic control system 3-9, the four McRae wheel drive motors 3-10 of the cleaning mechanism 3 drive the corresponding McRae wheels 3-1 to rotate in a coordinated manner, so that the cleaning mechanism 3 moves to the heliostat 4. The baffle motor 2-9 rotates in the opposite direction to drive a pair of meshing baffle gears 2-8 to rotate, so that the baffle 2-1 is separated from the heliostat 4 and closed.

[0019] Under the control of the cleaning mechanism electronic control system 3-9, the four Mcram wheel drive motors 3-10 of the cleaning mechanism 3 drive the Mcram wheel 3-1 to rotate in coordination, so that the cleaning mechanism 3 completes the cleaning work on the surface of the heliostat 4 according to the predetermined walking path. The cleaning work of the dust on the surface of the heliostat 4 is completed by jetting, sprinkling, wiping and scraping: the air pump 3-5 generates compressed air, which flows into the jet nozzle 3-7 through the jet pipe 3-3 and the solenoid valve 3-4, and the air is sprayed by the jet nozzle 3-7 to blow away the dust on the surface of the heliostat. The on and off of the jet nozzle 3-7 is controlled by the solenoid valve 3-4; the cleaning liquid in the water tank 3-8 is sprayed on the surface of the heliostat 4 through the water nozzle 3-11; the cleaning brush motor 3-6 rotates, driving the cleaning brush 3-12 to rotate and wipe the surface of the heliostat 4; the cleaning scraper 3-13 behind the cleaning mechanism box 3-2 completes the scraping of the surface of the heliostat 4 to remove the residual cleaning liquid and dust.

[0020] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tower-type solar thermal power station heliostat cleaning system, comprising a walking track, a walking mechanism, and a cleaning mechanism, characterized in that The travel track is fixedly installed on the ground of the tower-type solar thermal power station through a guide rail bracket, the travel mechanism is suspended on the guide rail of the travel track through a travel wheel, and the cleaning mechanism is placed inside the travel mechanism.

2. A tower-type solar thermal power station heliostat cleaning system according to claim 1, characterized in that The walking track includes a guide rail bracket and a guide rail, the guide rail is fixed on the guide rail bracket, the lower end of the guide rail bracket is fixedly connected to the ground, the upper end of the guide rail bracket is supported below the guide rail, and the installation position of the guide rail is adapted to the position of the heliostat.

3. A tower-type solar thermal power station heliostat cleaning system according to claim 1, characterized in that The walking mechanism includes a baffle, a walking mechanism case, a walking mechanism electronic control system, a walking mechanism case bracket, a walking wheel bracket, a walking wheel motor, a walking wheel, a baffle gear, and a baffle motor. The walking mechanism case is a rectangular parallelepiped structure, and its lower half is a space for holding a cleaning mechanism. The baffle is connected to the lower edge of the walking mechanism case in a hinged manner, and a pair of baffle gears are meshed with each other, one of the baffle gears is fixedly connected to the baffle, and the other baffle gear is installed on the output shaft of the baffle motor. The baffle motor is fixedly installed below the walking mechanism case, and the walking mechanism electronic control system is installed on the upper half of the walking mechanism case, a walking mechanism case bracket is fixedly connected to the top of the walking mechanism case, a walking wheel bracket is fixedly connected to the walking mechanism case bracket, and a walking wheel motor and a walking wheel are installed on the walking wheel bracket.

4. A tower-type solar thermal power station heliostat cleaning system according to claim 1, characterized in that The cleaning mechanism comprises a McRae wheel, a cleaning mechanism housing, an air jet pipe, an electromagnetic valve, an air pump, a cleaning brush motor, an air jet nozzle, a water tank, an electronic control system for the cleaning mechanism, a McRae wheel drive motor, a water jet nozzle, a cleaning brush, and a cleaning scraper. The cleaning mechanism housing is a hollow rectangular parallelepiped structure. The McRae wheel drive motor is installed below the cleaning mechanism housing. The output shaft of the McRae wheel drive motor is fixedly connected to the McRae wheel. The water jet nozzle is fixedly installed below the front end of the cleaning mechanism housing and is connected to the water tank. The water tank is installed inside the cleaning mechanism housing. The electronic control system for the cleaning mechanism is installed inside the cleaning mechanism housing. The cleaning brush motor is fixedly installed in the middle position of the cleaning mechanism housing. The output shaft of the cleaning brush motor extends below the cleaning mechanism housing and is fixedly connected to the cleaning brush. The cleaning scraper is installed below the rear side of the cleaning mechanism housing. The air jet nozzle is fixedly installed below the left and right sides and the front side of the cleaning mechanism housing and is connected to the electromagnetic valve and the air pump through the air jet pipe.

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