CN114918211A - Heliostat cleaning device and cleaning method - Google Patents
Heliostat cleaning device and cleaning method Download PDFInfo
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- CN114918211A CN114918211A CN202210407742.0A CN202210407742A CN114918211A CN 114918211 A CN114918211 A CN 114918211A CN 202210407742 A CN202210407742 A CN 202210407742A CN 114918211 A CN114918211 A CN 114918211A
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- heliostat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention belongs to the technical field of solar photo-thermal power generation, and particularly relates to a heliostat cleaning device and a cleaning method. The technical scheme is as follows: the heliostat cleaning device comprises cleaning equipment and a track connected to a heliostat and used for guiding the cleaning equipment to the upper surface of the heliostat, wherein one end of the track is connected with an interactive interface, and the interactive interface is connected with a heliostat local control device in a wireless or wired mode. The invention provides a cleaning device and a cleaning method for automatically cleaning a heliostat.
Description
Technical Field
The invention belongs to the technical field of solar photo-thermal power generation, and particularly relates to a heliostat cleaning device and a cleaning method.
Background
The tower type solar photo-thermal power generation technology is one of the main forms of solar photo-thermal power generation, and is being applied more and more in engineering at present. The basic principle is as follows: the solar energy is reflected to the heat absorber by utilizing a mirror field formed by a plurality of heliostat mirrors, the working medium in the heat absorber is heated, and the working medium generates steam through a heat storage device, a heat exchange device and the like to push a steam turbine to drive a generator to generate electricity.
The heliostat is a key core device and mainly comprises a mirror surface, a mirror frame, an upright post, a driving execution mechanism and an electric control system. The solar heat collector mainly plays a role in collecting solar radiation energy by reflecting solar rays to the surface of the heat absorber through the mirror surface.
However, the heliostat mirror surface is affected by strong wind and dust on site, the heliostat mirror surface is easy to be dirty, the reflectivity of the heliostat mirror surface is seriously reduced, the solar energy utilization rate of the whole power station is affected, and the total power generation capacity of the power station is further affected.
In order to solve the problem, heliostat cleaning is one of important work contents in the operation and maintenance of the tower type solar photothermal power station. At present, the main equipment for cleaning the tower type solar heliostat is a cleaning vehicle based on a vehicle, a cleaning device is mainly arranged on the vehicle in the form of a cleaning arm, the cleaning vehicle is driven manually to move in a heliostat field, and the cleaning arm and the heliostat mirror surface are placed in a specific posture to clean the mirror surface.
The technology has the following defects:
firstly, the mirror field road needs to be leveled to adapt to the running of the vehicle. The mirror field is usually built in the gobi or desert, the mirror field road leveling cost is high, local vegetation is damaged, and the environment friendliness is poor;
secondly, the cleaning vehicle has high operation difficulty and potential safety hazards. In the cleaning process, the vehicle is easy to shake due to the problems of smoothness of the road surface, rigidity of the cleaning arm and the like, so that higher requirements are provided for vehicle driving operators; and in the mirror surface posture adjustment process before and after the completion of washing, if the washing car or the washing arm does not leave the mirror surface in time, will make heliostat and belt cleaning device collide, and then make equipment damage.
Thirdly, the cleaning vehicle has high operation cost. The operation of the cleaning vehicle requires the driving of personnel and the consumption of fuel oil and water, and the power station is usually built in the gobi and desert with water shortage, so that the personnel and material costs are higher during the whole operation period of the power station;
and fourthly, normal operation of the mirror field is influenced. For a large heliostat, the mirror surface of the heliostat needs to be adjusted to a vertical posture for cleaning, light spots of the heliostat possibly sweep through a tower-type solar light spot calibration target area in the adjusting process, and the normal calibration process of the heliostat in a heliostat field is influenced; and the heliostat is called to be cleaned in the operation process, so that the normal operation of the heliostat is influenced, and the design difficulty of the control system is increased.
And fifthly, the cleaning degree of the inner ring heliostat is difficult to ensure. Lean on inner ring heliostat in the mirror field because of the consideration such as mirror field arrangement efficiency, its interval is narrower, is difficult to guarantee that oversize vehicle passes through, often adopts small-size ordinary similar watering lorry to wash, and the cleaning performance is difficult to guarantee.
Disclosure of Invention
In order to solve the above problems in the prior art, an object of the present invention is to provide a cleaning apparatus and a cleaning method for automatically cleaning heliostats.
The technical scheme adopted by the invention is as follows:
the heliostat cleaning device comprises cleaning equipment and a track connected to a heliostat and used for guiding the cleaning equipment to the upper surface of the heliostat, wherein one end of the track is connected with an interactive interface, and the interactive interface is connected with a heliostat local control device in a wireless or wired mode.
The cleaning equipment is controlled by the heliostat local control device, after receiving a cleaning instruction of the heliostat local control device, the cleaning equipment moves to the upper surface of the heliostat mirror surface along the track according to the judgment and detection of the current environment information, and the cleaning equipment autonomously finishes cleaning the mirror surface after being separated from the track. And after cleaning is finished, the cleaning equipment returns to the rail return point and returns to the interactive interface according to the rail, and the cleaning equipment is charged at the interactive interface and waits for a next cleaning instruction.
The heliostat field control system also comprises a heliostat field central control system which is connected with the heliostat local control device in a wireless or wired mode. A heliostat field central control system is used to control and manage the heliostats, which communicates with the heliostat field control devices. The heliostat local control device is used for locally controlling the mirror surface attitude of the heliostat and receiving data and instructions from the mirror field central control system. The interaction interface is used for information transmission between the heliostat local control device and the cleaning equipment and provides a charging interface of the cleaning equipment.
As a preferable scheme of the cleaning device, the cleaning device comprises a protective shell, a battery assembly, a cleaning assembly, a sensor assembly, an interface assembly, a driving assembly, a control assembly and a driving wheel are respectively arranged in the protective shell, the battery assembly is electrically connected with the cleaning assembly, and the driving assembly is used for driving the driving wheel to act and driving an actuating mechanism of the cleaning assembly to rotate; the control assembly is electrically connected with the heliostat local control device, and the interface assembly is used for being connected with the interactive interface.
Wherein, battery pack has the function of charging, is the cleaning equipment power source. The cleaning assembly can clean and absorb dust on the mirror surface. The sensor component comprises an infrared sensor, a laser sensor or an image sensor and the like, and the sensor component also comprises an acceleration sensor or a gyroscope. The interface component comprises a communication interface and a power interface. The driving assembly is used for driving the cleaning equipment to move and driving the actuating mechanism of the sweeping assembly to rotate. The control assembly is used for controlling the operation of each assembly of the cleaning equipment and has a function of transmitting data with the heliostat local control box. The protective shell is used for preventing water, dust, ultraviolet rays, corrosion and the like of the cleaning equipment.
As a preferable scheme of the invention, the driving wheel is provided with a gear, the track is provided with a rack, and the gear is meshed with the rack. In order to make it easier for the cleaning device to be moved from the rail to the mirror surface, the guide rail is provided with a toothed rack and the drive wheel of the cleaning device is correspondingly provided with a toothed wheel. So that the cleaning equipment can be meshed with the rack on the guide rail by the gear when walking on the rail. And once the cleaning equipment reaches the surface of the heliostat, the large wheel of the driving wheel contacts the surface of the heliostat and continues to be driven by the large wheel.
As a preferable aspect of the present invention, the cleaning apparatus further includes a dust box assembly for storing dust absorbed from the sweeping assembly. The dust box component is used for storing dust absorbed from the cleaning component, and the box cover of the dust box component has a function of controlled opening.
As a preferable scheme of the invention, one end of the track extends to the edge of the upper surface of the heliostat, and the other end of the track extends out of the heliostat mirror surface or the lower side of the heliostat mirror surface and is connected with the interactive interface. Each heliostat is provided with one or more sets of tracks, and the tracks have two design modes. A first mode in which the light source is disposed below the mirror surface and extends above the mirror surface; the cleaning device suspension fixing device is used for providing a path for the cleaning device to move from the position below the mirror surface to the position above the mirror surface, and the cleaning device suspension fixing device is also included, so that the cleaning device can stably stay at the position of the starting-end interaction interface of the track. Preferably, the specific arrangement of the tracks is designed according to the actual structure of the heliostat, and the tracks can extend from the outer edge of the mirror surface to the upper part of the mirror surface and can also extend from the proper position on the inner side of the mirror surface to the upper part of the mirror surface. The tail end of the track is a track return point, the track return point is arranged above the mirror surface, and the track return point comprises a sensor and a track, and the sensor is used for assisting the cleaning equipment to return to the track. And in the second mode, the cleaning equipment is arranged at the edge of the mirror surface, the arrangement position can also be selected according to the surface type characteristics of the heliostat, and the tail end of the track is flush with the mirror surface, so that the cleaning equipment can be parked at the intersection along the track.
As a preferred scheme of the invention, the heliostat local control device comprises a control module, a communication module, a driving module and a power supply module; the communication module is used for communicating with the cleaning equipment or the mirror field central control system, and the power supply module is used for charging the cleaning equipment through the interactive interface. The heliostat local control device can monitor the states of components such as a cleaning equipment battery and the like, and transmits the states to a heliostat field central control system to provide information for equipment maintenance. The heliostat field central control system can collect rainfall, wind speed, solar irradiation intensity and other information of the heliostat field weather station, is in wired or wireless connection communication with the heliostat field local control system, transmits the heliostat field weather information and issues control instructions to the heliostat field local control device.
A heliostat cleaning method comprising the steps of:
s1: when the cleaning instruction is not received, the cleaning equipment stops at the interaction interface, charges the battery and waits for the heliostat local control device to issue the cleaning instruction;
s2: the heliostat local control device judges the mirror surface attitude, and if the heliostat is horizontal and the working state of the heliostat is normal, the heliostat local control device issues a cleaning instruction to the cleaning equipment;
s3: after receiving a cleaning instruction, the cleaning equipment applies to the heliostat local control device for acquiring meteorological information and mirror surface angle data of a heliostat field;
s4: if the meteorological information of the mirror field and the angle data of the mirror surface are in the correct range, starting a cleaning process by the cleaning equipment, and calculating and recording the cleanliness of the cleaned mirror surface by the cleaning equipment;
s5: after cleaning, the cleaning equipment automatically returns to the track returning point and moves to the interaction interface along the track;
s6: the cleaning equipment sends the cleanliness data to the heliostat local control device; the heliostat local control device stores data of cleanliness and cleaning time and uploads the data to the heliostat field central control system, and the heliostat field central control system updates the cleanliness and the cleaning time of the last time and waits for being called.
As a preferred embodiment of the present invention, in step S4, the cleaning device is disengaged from the interactive interface during operation, moves along the track to a position above the heliostat mirror surface, and then disengages from the end of the track, thereby autonomously completing the cleaning of the heliostat mirror surface.
As a preferred embodiment of the present invention, in step S4, the heliostat local control device controls the heliostat mirror to be kept horizontal during the cleaning process, so as to avoid the cleaning device from falling off the heliostat.
The beneficial effects of the invention are as follows:
1. the cleaning equipment is directly arranged on the heliostat, so that the cost of leveling a field road in a power station can be saved, and the environmental friendliness is enhanced. Meanwhile, during the use period of the cleaning equipment, a driver is not needed, an operator is not needed to be specially arranged in a power station, the consumption of fuel oil and water is not needed, and the operation cost of the power station can be reduced. The invention can save the construction and operation cost of the power station.
2. The cleaning time and the operation time of the heliostat can be staggered, the operation of a power station and the normal calibration process of the heliostat are not influenced, and the design of a control system can be simpler. The cleaning process can be carried out only after the mirror surface angle, the mirror field wind speed and the rainfall and snowfall amount meet the requirements, so that the cleaning can be carried out when the system is not in operation or at night, the operation of the power station is not influenced, and the input rate of the heliostat is increased when the power station is in operation. Meanwhile, if the heliostat is cleaned at night, the heliostat cannot generate light spots, and the normal calibration process of the heliostat is not influenced. Because the cleaning time is staggered with the operation time, the interaction with the control system in normal operation is reduced, and the design of the control system is simpler.
3. The invention can greatly improve the cleaning frequency, improve the cleanliness and further improve the generating capacity. The traditional heliostat is limited by the number of cleaning vehicles, can be cleaned only once in a period of about one week or even longer, and has lower average cleanliness of a mirror surface. The cleaning process of the invention has short time, can be carried out at any time as required every day, greatly improves the cleaning frequency, ensures that the cleanliness is always at a higher level, and can obviously improve the power generation capacity of a power station.
4. The invention has high automation degree. The cleaning device can automatically run and stop after the conditions are met, and the whole cleaning process does not need personnel to drive vehicles and operate.
5. The heliostat and the cleaning equipment are safer to use. The whole cleaning process is controlled according to weather, mirror surface postures and the like, collision and interference among equipment do not exist during cleaning, operation difficulties such as vehicle driving do not exist, and the heliostat and the cleaning device are safer to use.
Drawings
FIG. 1 is a schematic view of the present invention in a first track configuration;
FIG. 2 is a schematic diagram of the structure of the present invention in a second track form;
FIG. 3 is a flow chart of the cleaning method of the invention;
FIG. 4 is a schematic view of the structure of the cleaning apparatus;
FIG. 5 is a rear view of the cleaning apparatus;
FIG. 6 is a schematic view of the operation of the cleaning apparatus;
fig. 7 is a schematic view of the structure of the track.
In the figure: 1-cleaning equipment; 2-track; 3-track return point; 4-an interactive interface; 5-heliostat in-place control devices; 6-mirror field central control system; 7-heliostat mirror face; 1.1-a battery assembly; 1.2-a sweeping component; 1.3-sensor assembly; 1.4-interface components; 1.5-a dust box assembly; 1.6-a drive assembly; 1.7-control assembly; 1.8-protective shell; 1.9-driving wheel; 2.1-rack; 1.91-gear.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
As shown in fig. 1 and 2, the heliostat cleaning device of the present embodiment includes a cleaning device 1 and a track 2 connected to the heliostat for guiding the cleaning device 1 to the upper surface of the heliostat, one end of the track 2 is connected to an interactive interface 4, and the interactive interface 4 is connected to a heliostat local control device 5 in a wireless or wired manner. The invention also includes a mirror field central control system 6 connected to the heliostat field local control apparatus 5 in a wireless or wired manner. A heliostat field central control system 6 is used to control and manage the heliostats and is in communication with the heliostat local control apparatus 5. The heliostat local control device 5 is used for locally controlling the attitude of a heliostat mirror 7 and receiving data and instructions from a heliostat field central control system 6. The interactive interface 4 is used for information transmission between the heliostat local control device 5 and the cleaning equipment 1 and provides a charging interface of the cleaning equipment 1.
The cleaning equipment 1 is controlled by the heliostat local control device 5, after receiving a cleaning instruction of the heliostat local control device 5, the cleaning equipment 1 moves to the upper surface of a heliostat mirror surface 7 along the track 2 according to the judgment and detection of the current environment information, and the cleaning equipment 1 autonomously finishes the cleaning of the mirror surface after being separated from the track 2. After cleaning, the cleaning equipment 1 returns to the track returning point 3 and returns to the interactive interface 4 according to the track 2, and the cleaning equipment is charged at the interactive interface 4 and waits for the next cleaning instruction.
Specifically, as shown in fig. 4, the cleaning device 1 includes a protective casing 1.8, a battery assembly 1.1, a cleaning assembly 1.2, a sensor assembly 1.3, an interface assembly 1.4, a driving assembly 1.5, a control assembly 1.6 and a driving wheel 1.9 are respectively installed in the protective casing 1.8, the battery assembly 1.1 is electrically connected with the cleaning assembly 1.2, and the driving assembly 1.5 is used for driving the driving wheel 1.9 to act and driving an actuating mechanism of the cleaning assembly 1.2 to rotate; the control assembly 1.6 is electrically connected with the heliostat local control device 5, and the interface assembly 1.4 is used for being connected with the interaction interface 4. The cleaning device 1 further comprises a dust box assembly 1.5, the dust box assembly 1.5 is used for storing dust absorbed from the sweeping assembly 1.2. The dust box assembly 1.5 is used for storing dust absorbed from the sweeping assembly 1.2, and the box cover of the dust box assembly has a function of controlled opening.
Wherein, battery pack 1.1 has the function of charging, is the power source of cleaning equipment 1. The cleaning assembly 1.2 can clean and suck dust on the mirror surface. The sensor component 1.3 comprises an infrared sensor, a laser sensor or an image sensor and the like, the sensor component 1.3 also comprises an acceleration sensor or a gyroscope, and the sensor component can be used for detecting the edge of the mirror surface, the position of the track return point 3 and the gap between adjacent lenses and can be used for detecting the dirt degree of the mirror surface; the sensor assembly 1.3 also contains an acceleration sensor or gyroscope for detecting the attitude angle itself.
The interface module 1.4 comprises a communication interface and a power interface. The driving assembly 1.5 is used for driving the cleaning device 1 to move and driving the actuating mechanism of the sweeping assembly 1.2 to rotate. The control assembly 1.6 is used for controlling the operation of each assembly of the cleaning device 1 and has a function of transmitting data with the heliostat local control box. The protective casing 1.8 is used for water, dust, ultraviolet, corrosion and the like of the cleaning device 1.
As shown in fig. 5 and 7, in order to enable the cleaning device 1 to accurately run along the track 2, a gear 1.91 is arranged on the driving wheel 1.9, a rack 2.1 is arranged on the track 2, and the gear 1.91 is meshed with the rack 2.1. In order to make it easier for the cleaning device 1 to be moved from the rail 2 onto the mirror surface, the guide rail is provided with a toothed rack 2.1 and the drive wheel 1.9 of the cleaning device 1 is correspondingly provided with a toothed wheel 1.91. So that the cleaning device 1 can be engaged with the rack 2.1 on the guide rail by means of the gear 1.91 when walking on the track 2. And once the cleaning device 1 reaches the heliostat mirror 7, the drive wheels 1.9 come into contact with the mirror and continue to be driven by means of the large wheels. It is noted that gear 1.91 is smaller in diameter than drive wheel 1.9 and is concentrically disposed therewith, and drive wheel 1.9 directly contacts the heliostat face 7 after cleaning apparatus 1 is moved thereto.
One end of the track 2 extends to the edge of the upper surface of the heliostat, and the other end of the track 2 extends to the outside of the heliostat mirror 7 or the lower side of the heliostat mirror 7 and is connected with the interactive interface 4. Each heliostat is provided with one set or a plurality of sets of tracks 2, and the tracks 2 have two design modes.
The first mode is as follows: as shown in fig. 1, the rail 2 is disposed below the mirror surface and extends to above the mirror surface; for providing a path for the cleaning device 1 to move from below the mirror surface to above the mirror surface, and comprises a suspension fixing device for the cleaning device 1, so that the cleaning device 1 can stably stay at the position of the interactive interface 4 at the beginning of the track 2. Preferably, the specific arrangement of the track 2 should be designed according to the actual structure of the heliostat, and may extend from the outer edge of the mirror surface to above the mirror surface, or may extend from the inner side of the mirror surface to above the mirror surface at a suitable position. The track 2 ends with a track return point 3, the track return point 3 being arranged above the mirror surface, the track return point 3 comprising a sensor, the track 2, for assisting the return of the cleaning device 1 to the track 2.
As shown in fig. 6, the track 2 may also comprise two guide rails, wherein one guide rail is rooted from the bottom steel structure, the other guide rail extends to the upper part of the heliostat mirror 7, and the distance between the two guide rails just can pass through the cleaning device 1.
The second mode is as follows: as shown in fig. 2, it is disposed at the edge of the mirror surface, and the disposition position can also be selected according to the surface type characteristics of the heliostat, and the tail end of the track 2 is flush with the mirror surface, so that the cleaning device 1 can be docked to the interactive interface 4 along the track 2.
The tail end of the track 2 is provided with a track returning point 3 which comprises an infrared sensor and a releasing track 2, and the infrared sensor and the sensor feedback information of the cleaning equipment 1 can be used for positioning the cleaning equipment 1 so as to help the cleaning equipment to return to the track returning point 3 after cleaning is finished after calculation. The size of the opening at the tail end of the track 2 can be properly widened, the positioning accuracy of the cleaning equipment 1 returning to the track 2 can be reduced, and once the toothed wheel 1.91 with the smaller outer diameter in the driving wheel 1.9 of the cleaning equipment 1 enters the flaring range at the tail end of the track 2, the auxiliary guiding can be carried out on the cleaning equipment 1 to guide the cleaning equipment 1 to return to the interaction interface 4.
The starting end of the track 2 should be provided with a fixing device of the cleaning device 1 to ensure that the cleaning device 1 can be stably and firmly fixed on the track 2 when not being cleaned. The interactive interface 4 is located at the starting end of the track 2, the heliostat local control device 5 extends the communication interface and the power distribution interface of the heliostat local control device to the position in a wired mode, and the interactive interface 4 has the waterproof and dustproof functions. The communication interface and the power distribution interface are respectively in butt joint with the communication interface of the cleaning equipment 1 and correspond to the power distribution interface; the communication interface can be designed into serial communication physical interfaces such as RS485 and RS 232. The arrangement positions of the interactive interface 4 and the track 2 are properly close to the outer side of the mirror surface, so that when the mirror surface is in an approximately vertical posture, a worker can directly overhaul and maintain the mirror surface on the ground.
The heliostat local control device 5 comprises a control module, a communication module, a driving module and a power supply module; the communication module is used for communicating with the cleaning equipment 1 or the mirror field central control system 6, and the power supply module is used for charging the cleaning equipment 1 through the interactive interface 4. The heliostat local control device 5 can monitor the states of the components such as the battery of the cleaning equipment 1 and the like, and transmit the states to the mirror field central control system 6 to provide information for equipment maintenance. The heliostat field central control system 6 can collect information such as rainfall, wind speed and solar irradiation intensity of the heliostat field weather station, is in wired or wireless connection communication with the heliostat field local control system, transmits the heliostat field weather information and issues control instructions to the heliostat field local control device 5.
As shown in fig. 3, the heliostat cleaning method of the embodiment includes the following steps:
s1: when the cleaning instruction is not received, the cleaning equipment 1 stops at the interactive interface 4 to charge the battery and waits for the heliostat local control device 5 to issue the cleaning instruction;
s2: the heliostat field central control system 6 issues a cleaning permission instruction, the heliostat local control device 5 judges the posture of the mirror surface, and if the heliostat is horizontal and the working state of the heliostat is normal, the heliostat local control device 5 issues a cleaning instruction to the cleaning equipment 1;
s3: after receiving an instruction from a heliostat local control device 5 at an interactive interface 4, the cleaning equipment 1 applies to acquire meteorological data such as current mirror field wind speed, rainfall, snowfall and the like and mirror surface angle data from the local control device, and acquires a self attitude angle from a self acceleration sensor or a gyroscope; calculating to obtain the actual angle of the mirror surface according to the actual angle, and judging the values: the wind speed is in a certain range, such as 3 seconds gust wind speed is lower than 12 m/s; and the rainfall is in a certain range, such as 0 mm; the mirror surface has no accumulated snow and water; the mirror angle is consistent with the current actual angle, the current actual angle is nearly horizontal, and the actual angle value is in the range of (-3 degrees and 3 degrees); the cleaning equipment 1 judges parameters such as self electric quantity, working state and the like at the same time so as to determine whether the abnormality exists;
s4: if the meteorological information of the mirror field, the angle data of the mirror surface and the like are in the correct range, the cleaning equipment 1 starts the cleaning process, and the cleaning equipment 1 calculates and records the cleanliness after cleaning;
the cleaning equipment 1 is separated from the interactive interface 4 and runs to a track return point 3 at the tail end of the track 2 along the track 2; then, the mirror surface is automatically cleaned according to the cleaning path; the cleaning equipment 1 is internally provided with a track returning point 3 position and a mirror surface cleaning path map, and simultaneously judges information of an infrared sensor and the like which are combined with the cleaning equipment and an infrared sensor of the track returning point 3, and determines the position and the direction of the cleaning equipment in real time; meanwhile, in the cleaning process, the cleaning equipment 1 continuously calculates and records the mirror reflectivity of the cleaned area by using the feedback information of the sensor, and is used for calculating the cleanliness of the mirror;
after the cleaning equipment 1 is separated from the interactive interface 4, the heliostat in-situ control device 5 keeps the mirror surface in a horizontal state all the time until the cleaning equipment 1 returns to the interactive interface 4; meanwhile, the heliostat local control device 5 takes the separation moment of the cleaning equipment 1 as a starting point, times the working time of the cleaning equipment 1, if the cleaning equipment 1 does not return to the interactive interface 4 within a specified time, the cleaning equipment 1 is considered to be possibly broken down, and sends the abnormal information to a mirror field central control system 6 to remind a worker of field maintenance;
s5: after the cleaning process is finished, the cleaning equipment 1 returns to the track returning point 3 according to the built-in cleaning path; when the position and the direction have deviation, the self position and the direction can be calculated through the information of the sensor, and the running path and the posture are continuously adjusted to ensure that the rail can finally return to the rail return point 3;
s6: the cleaning equipment 1 moves to the interactive interface 4 along the track 2 and is firmly fixed; opening a dust box cover, dumping the dust cleaned this time, and then feeding back information such as cleanliness, cleaning time and the like to the heliostat local control device 5; the heliostat local control device 5 stores the cleaning data and uploads the cleaning data to the heliostat field central control system 6, and the heliostat field central control system 6 updates and stores the cleaning data to wait for being called by the power station control system;
s7: when the cleaning process is finished, the cleaning device 1 is charged at the interactive interface 4 and waits for the next call.
The cleaning equipment 1 is directly arranged on the heliostat, so that the cost of leveling a field road in a power station can be saved, and the environmental friendliness is enhanced. Meanwhile, during the use period of the cleaning equipment 1, drivers are not needed, operators are not needed to be specially arranged in a power station, the consumption of fuel oil and water is not needed, and the operation cost of the power station can be reduced. The invention can save the construction and operation cost of the power station.
The cleaning time and the operation time of the heliostat can be staggered, the operation of a power station and the normal calibration process of the heliostat are not influenced, and the design of a control system can be simpler. The cleaning process can be carried out only after the mirror surface angle, the mirror field wind speed and the rainfall and snowfall amount meet the requirements, so that the cleaning can be carried out when the system is not in operation or at night, the operation of the power station is not influenced, and the input rate of the heliostat is increased when the power station is in operation. Meanwhile, if the heliostat is cleaned at night, the heliostat cannot generate light spots, and the normal calibration process of the heliostat is not influenced. Because the cleaning time is staggered with the running time, the interaction with the control system in normal running is reduced, and the design of the control system is simpler.
The invention can greatly improve the cleaning frequency, improve the cleanliness and further improve the generating capacity. The traditional heliostat is limited by the number of cleaning vehicles, can be cleaned only once in a period of about one week or even longer, and has low average cleanliness of a mirror surface. The cleaning process of the invention has short time, can be carried out at any time as required every day, greatly improves the cleaning frequency, ensures that the cleanliness is always at a higher level, and can obviously improve the power generation capacity of a power station.
The invention has high automation degree. The cleaning device can automatically run and stop after the conditions are met, and the whole cleaning process does not need personnel to drive vehicles and operate.
The heliostat and cleaning apparatus 1 is safer to use. The whole cleaning process is controlled according to weather, mirror surface postures and the like, collision and interference among equipment do not exist during cleaning, operation difficulties such as vehicle driving do not exist, and the heliostat and the cleaning device are safer to use.
The present invention is not limited to the above-mentioned alternative embodiments, and any other various products can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, all of which fall within the scope of the present invention, fall within the protection scope of the present invention.
Claims (10)
1. A heliostat cleaning apparatus, characterized by: the cleaning device comprises a cleaning device (1) and a track (2) connected to the heliostat and used for guiding the cleaning device (1) into the upper surface of the heliostat, wherein one end of the track (2) is connected with an interactive interface (4), and the interactive interface (4) is connected with a heliostat local control device (5) in a wireless or wired mode.
2. A heliostat cleaning apparatus of claim 1 wherein: the heliostat field control system also comprises a heliostat field central control system (6) connected with the heliostat field local control device (5) in a wireless or wired mode.
3. A heliostat cleaning apparatus of claim 1, wherein: the cleaning equipment (1) comprises a protective shell (1.8), a battery assembly (1.1), a cleaning assembly (1.2), a sensor assembly (1.3), an interface assembly (1.4), a driving assembly (1.5), a control assembly (1.6) and a driving wheel (1.9) are respectively installed in the protective shell (1.8), the battery assembly (1.1) is electrically connected with the cleaning assembly (1.2), and the driving assembly (1.5) is used for driving the driving wheel (1.9) to act and driving an actuating mechanism of the cleaning assembly (1.2) to rotate; the control assembly (1.6) is electrically connected with the heliostat local control device (5), and the interface assembly (1.4) is used for being connected with the interactive interface (4).
4. A heliostat cleaning apparatus of claim 3, wherein: the driving wheel (1.9) is provided with a gear (1.91), the track (2) is provided with a rack (2.1), and the gear (1.91) is meshed with the rack (2.1).
5. A heliostat cleaning apparatus of claim 3 wherein: the cleaning device (1) further comprises a dust box assembly (1.5), and the dust box assembly (1.5) is used for storing dust absorbed from the sweeping assembly (1.2).
6. A heliostat cleaning apparatus of claim 1, wherein: one end of the track (2) extends to the edge of the upper surface of the heliostat, and the other end of the track (2) extends out of the heliostat mirror surface (7) or the lower side of the heliostat mirror surface (7) and is connected with the interaction interface (4).
7. A heliostat cleaning apparatus of claim 1, wherein: the heliostat local control device (5) comprises a control module, a communication module, a driving module and a power supply module; the communication module is used for communicating with the cleaning equipment (1) or a mirror field central control system (6).
8. A heliostat cleaning method is characterized in that: the method comprises the following steps:
s1: when the cleaning instruction is not received, the cleaning equipment (1) stops at the interactive interface (4), charges the battery and waits for the heliostat local control device (5) to issue the cleaning instruction;
s2: the heliostat local control device (5) judges the mirror surface posture, and if the heliostat is horizontal and the working state of the heliostat is normal, the heliostat local control device (5) issues a cleaning instruction to the cleaning equipment (1);
s3: after receiving a cleaning instruction, the cleaning equipment (1) applies to a heliostat local control device (5) for acquiring meteorological information of a heliostat field and mirror surface angle data;
s4: if the meteorological information of the mirror field and the angle data of the mirror surface are in the correct range, the cleaning equipment (1) starts the cleaning process, and the cleaning equipment (1) calculates and records the cleanliness after cleaning;
s5: after cleaning, the cleaning equipment (1) automatically returns to the track returning point (3) and moves to the interactive interface (4) along the track (2);
s6: the cleaning equipment (1) sends the cleanliness data to the heliostat local control device (5); the heliostat local control device (5) stores data of cleanliness and cleaning time and uploads the data to the heliostat field central control system (6), and the heliostat field central control system (6) updates the previous cleanliness and cleaning time to wait for being called.
9. A heliostat cleaning method according to claim 8, wherein: in step S4, the cleaning device (1) disengages from the interactive interface (4) and moves along the track (2) to above the heliostat mirror (7) and then disengages from the end of the track (2) to autonomously complete the cleaning of the heliostat mirror (7).
10. A heliostat cleaning method according to claim 8, wherein: in step S4, the heliostat local control device (5) controls the heliostat mirror (7) to be horizontal during the washing process.
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| CN115218946A (en) * | 2022-09-20 | 2022-10-21 | 国机传感科技有限公司 | Heliostat cleaning experimental device |
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