Dual-mode automatic cleaning device of waste heat coupling power generation device, control system and control method

Abstract

The invention relates to the technical field of automatic cleaning, in particular to a dual-mode automatic cleaning device of a waste heat coupling power generation device, a control system and a control method.The dual-mode automatic cleaning device comprises a photovoltaic panel and a cleaning device body, and the cleaning device body comprises a dry cleaning assembly, a wet cleaning assembly, a connecting piece, a sliding rail assembly and a water pipe; each sliding rail assembly comprises a sliding rail, a rack, a motor, a gear and a gear shaft. The wet cleaning assembly and the dry cleaning assembly are oppositely arranged on the side portions of one set of opposite edges of the photovoltaic panel, and the two sets of sliding rail assemblies are oppositely arranged on the side portions of the other set of opposite edges of the photovoltaic panel. The end of the wet cleaning assembly and the end of the dry cleaning assembly are connected with the sliding rail assembly through connecting pieces, one end of the wet cleaning assembly is connected with a water pipe, and the water pipe extends into the wet cleaning assembly. The motor is connected with a gear through a gear shaft. The gear is meshed with a rack arranged at the bottom of the sliding rail. The system is simple in structure, low in cost and high in intelligent degree, and can ensure that the photovoltaic panel is always in an efficient working state.

Description

Technical Field

[0001] The present invention relates to the field of automated cleaning technology, and in particular to a dual-mode automatic cleaning device, a control system, and a control method for a waste heat coupled power generation device. Background Art

[0002] In existing technologies, coupled power generation systems that utilize waste heat from exhaust gases and waste heat from photovoltaic panels are prone to the accumulation of dust, dirt, and other impurities on their surfaces during long-term use. These impurities block sunlight, reducing the light absorption efficiency of the photovoltaic panels and, consequently, affecting power generation efficiency. Studies have shown that dust accumulation on the surface of photovoltaic panels can cause power generation efficiency to drop by 10% to 30%, and in some severe cases, by more than 50%. Furthermore, dust accumulation not only affects the power generation efficiency of photovoltaic panels but also reduces the heat transfer efficiency of the photovoltaic waste heat utilization device, leading to a decrease in the overall performance of the coupled system.

[0003] Traditional cleaning methods include manual cleaning and mechanical cleaning. Although manual cleaning is low-cost, it is inefficient and poses safety risks. Although mechanical cleaning equipment is more efficient, it usually requires complex operation and maintenance and may cause damage to the surface of the photovoltaic panel. In addition, most existing cleaning methods are single-mode, single-stroke cleaning, which may leave water stains and reflections on the surface of the photovoltaic panel after cleaning, thereby affecting work efficiency. At the same time, water consumption also needs to be precisely controlled to reduce working water consumption. Therefore, the development of a cleaning device and control system that can efficiently, conveniently, and intelligently remove dust from the surface of photovoltaic panels is of great significance to improving the operating efficiency and reliability of waste heat coupled power generation devices. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a dual-mode automatic cleaning device, control system and control method for a waste heat coupled power generation device, which has a simple structure, low cost and high intelligence, and can ensure that the photovoltaic panels are always in an efficient working state.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A dual-mode automatic cleaning device for a waste heat coupled power generation device, comprising:

[0007] A photovoltaic panel, which is embedded in the top of the heat storage tank of the photovoltaic waste heat utilization device and is the object to be cleaned;

[0008] A cleaning device comprising a dry cleaning assembly, a wet cleaning assembly, a connector, a slide rail assembly, and a water pipe; the slide rail assembly comprises two groups, each group comprising a slide rail, a rack, a motor, a gear, and a gear shaft;

[0009] The wet cleaning assembly and the dry cleaning assembly are relatively arranged on one set of opposite sides of the photovoltaic panel, and the two sets of slide rail assemblies are relatively arranged on another set of opposite sides of the photovoltaic panel;

[0010] The ends of the wet cleaning assembly and the dry cleaning assembly are connected to the slide rail assembly through connectors. One end of the wet cleaning assembly is connected to a water pipe, which extends into the interior of the wet cleaning assembly.

[0011] The motor includes a first motor driving the wet cleaning component and a second motor driving the dry cleaning component. The first motor and the second motor are respectively connected to gears through gear shafts, and the gears are engaged with racks arranged at the bottom of the slide rail; the first motor and the second motor respectively drive the wet cleaning component and the dry cleaning component to reciprocate on the slide rail through the cooperation of gears and racks to complete wet cleaning and dry cleaning of the surface of the photovoltaic panel.

[0012] Preferably, the dry cleaning component and the wet cleaning component are both flat brushes, and a threaded hole for installing a connector is opened on the side of one end of the dry cleaning component and the wet cleaning component, and a water supply hole for connecting a water pipe is opened on the side of the other end of the wet cleaning component, and a plurality of diversion holes are opened on the bottom surface of the water supply hole.

[0013] Preferably, the connecting member is L-shaped, and the connecting member includes a short side and a long side. The end face of the short side is provided with two threaded through holes for matching and connecting the dry cleaning component and the wet cleaning component; the inner side surface of the long side is provided with a through hole for connecting the first motor or the second motor.

[0014] Preferably, the slide rails are distributed on both sides of the photovoltaic panel, a slide groove is provided inside the slide rail, a rack is provided at the bottom of the slide groove, and the rack is engaged with the gear;

[0015] The outer side surface of the slide rail is provided with a central straight notch, and the central straight notch forms a notch match with the gear shaft; one end of the gear shaft is connected to the first motor or the second motor, and the other end of the gear shaft is provided with a keyway, which is connected to the gear through key fit;

[0016] Both ends of the slide rail are provided with limit blocks for limiting the displacement of the wet cleaning component to prevent it from falling off; the surface of the limit block is provided with a displacement sensor, which feeds back information to the controller when the wet cleaning component moves to the end position or returns to the initial position to control the motor to reverse or stop rotating.

[0017] Preferably, the length of the slide rail is slightly larger than the side length of the photovoltaic panel; the slide rail components on both sides of the photovoltaic panel are arranged in reverse, so that the initial positions of the dry cleaning component and the wet cleaning component are distributed on both sides of the photovoltaic panel, so that the dry cleaning component and the wet cleaning component can be used independently or in combination.

[0018] The present invention also provides a control system for a dual-mode automatic cleaning device of a waste heat coupled power generation device, comprising:

[0019] The detection module collects the temperature and power data of the photovoltaic panel through the sensor according to the collection frequency, sets the preset threshold, and determines whether to start the control module;

[0020] The control module connects the water pipe valve and the motor, and completes the wetting of the wet cleaning component brush through the start-stop valve. The motor is started by delaying the time, and the gear rack meshes to drive the wet cleaning component to clean and wipe the photovoltaic panel.

[0021] The alarm module, after completing the operation multiple times, if the detection module still determines that the power is lower than the preset threshold, the alarm mechanism of the alarm module will be activated, and the photovoltaic panels will be repaired or the cleaning components will be replaced in time.

[0022] A control method for a dual-mode automatic cleaning device of a waste heat coupled power generation device is provided. The control method is implemented based on the control system of the dual-mode automatic cleaning device of the waste heat coupled power generation device as described above, and includes the following steps:

[0023] S101. The sensor collects the temperature of the bottom of the photovoltaic panel and the working efficiency of the photovoltaic panel under normal working conditions. The memory records the power generation efficiency corresponding to different temperatures and uses 90% of this power generation efficiency as a preset threshold. In addition, the power reference value is corrected in real time through the temperature sensor to avoid misjudgment caused by ambient temperature changes.

[0024] S102, the sensor periodically collects the voltage and current data of the photovoltaic panel, compares it with the preset threshold, and determines whether it is lower than the preset threshold. If so, proceed to S103, otherwise proceed to S108;

[0025] S103, control the valve to open, wet the wet cleaning component for 5 seconds, and then close the valve;

[0026] S104: The first motor is started with a delay by the controller, and the motor rotates forward through the meshing of the rack and pinion to drive the wet cleaning assembly to complete a cleaning cycle. When the motor touches the limit block at the end of the slide rail, the sensor provides feedback to control the first motor to reverse and reset. When the motor touches the initial position limit block, the motor is turned off.

[0027] S105: The controller delays the start of the second motor, which rotates forward and drives the dry cleaning component to complete a wipe through the meshing of the gear rack to remove water stains. When the stop block at the end of the slide rail is touched, the sensor feedback information controls the second motor to reverse and reset. When the initial position stop block is touched, the second motor is turned off.

[0028] S106, determining whether the working efficiency of the photovoltaic panel after cleaning is lower than a preset threshold, if so, proceed to S107, if not, proceed to S108;

[0029] S107: Determine whether the number of operations is less than 5. If so, repeat S102, S104, and S105, and increase the number of operations by 1. If not, trigger the alarm mechanism and perform maintenance on the device.

[0030] S108: End the work task of this cycle and wait for the detection task of the next cycle.

[0031] Preferably, in S102, the collection frequency is set, and the temperature data and power data of the photovoltaic panel are periodically collected, and the power data is compared with the preset power threshold at the same temperature in a dust-free environment; if it is not lower than the threshold, the cleaning device is not started, and waits for the next cycle to collect data; if it is lower than the threshold, the cleaning device is started through the controller.

[0032] Preferably, in S106, after the dry cleaning component is reset, the temperature data and power data of the photovoltaic panel are collected again and compared with the preset threshold. If it is not lower than the threshold, the cleaning device will not start and wait for the next cycle to collect data; if it is lower than the threshold, further judgment will be made.

[0033] Preferably, in S107, when a cleaning operation is completed but the power is still lower than the preset threshold, it is determined whether the number of cleaning times in the memory is less than 5 times; if it is less than 5 times, it is possible that the cleaning is not thorough, and the cleaning steps of the above-mentioned cleaning components are repeated, and the number of cleaning times in the memory is increased by 1; if it is greater than 5 times, it is possible that the photovoltaic panel is aged or the cleaning component is too dirty and cannot be effectively cleaned, so the alarm mechanism is triggered, and the photovoltaic panel is repaired or the cleaning component is replaced.

[0034] By adopting the above technical solution, a dual-mode collaborative cleaning system is adopted to solve the problem of residual water stains and reflections in traditional single-mode cleaning. At the same time, an intelligent threshold judgment algorithm is introduced to establish a dynamic temperature-power correlation model. The power baseline value is corrected in real time through a temperature sensor to avoid misjudgments caused by ambient temperature changes. The cleaning object is a photovoltaic panel, which is embedded in the top of the heat storage tank of the photovoltaic waste heat utilization device. The cleaning device includes a slide rail, a wet cleaning device, a dry cleaning device, gears, and a motor. The motor drives the cleaning component to reciprocate on the slide rail through a gear rack to achieve the effect of cleaning and dust removal on the photovoltaic panel surface. The control system includes a detection module, a control module, and an alarm module. The detection module periodically collects the temperature and power generation efficiency of the bottom of the photovoltaic panel to determine whether there is a serious accumulation of dust on the surface. If dust accumulation is serious, the control module activates the motor to clean it. If the efficiency of the photovoltaic panel is still far below the preset threshold after multiple cleanings, an alarm mechanism is triggered, and the photovoltaic panel needs to be repaired or the cleaning component replaced.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention designs a dual-mode collaborative cleaning system, which includes two cleaning modes: wet cleaning and dry cleaning. The wet cleaning component realizes controllable water cleaning through the three-level wetting structure of water supply hole → diversion hole → brush, and the dry cleaning component simultaneously completes water stain wiping. Compared with the traditional single cleaning method, this dual cleaning method can solve the problem of residual water stains and reflections in the traditional single cleaning mode.

[0037] 2. This invention introduces an intelligent threshold determination algorithm, establishes a dynamic temperature-power correlation model, and employs a nonlinear compensation algorithm with a 90% efficiency threshold. Using a temperature sensor, it adjusts the power baseline in real time, preventing misjudgments caused by ambient temperature fluctuations. When the photovoltaic panel's power generation efficiency falls below a preset threshold, the system automatically activates a cleaning device, eliminating the impact of human error and delays.

[0038] 3. The present invention uses fault judgment logic with multiple cleaning cycles and efficiency re-inspections, and sets up multiple failure protection mechanisms, which can accurately distinguish between dust accumulation faults (cleanable) and component aging faults (requires replacement), reducing maintenance costs.

[0039] 4. Compared with other wetting mechanisms, the present invention designs a 5-10 second precise valve control method and a brush water storage structure. Through the delayed start mechanism, the brush maintains the optimal moisture content and avoids water waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 This is an enlarged view of the local structure of the driving part of the wet cleaning component of the present invention;

[0042] Figure 3 This is an enlarged view of the local structure of the driving part of the dry cleaning component of the present invention;

[0043] Figure 4 It is a structural schematic diagram of the wet cleaning component of the present invention;

[0044] Figure 5 It is a structural schematic diagram of the connecting piece of the present invention;

[0045] Figure 6 It is a structural schematic diagram of the slide rail of the present invention;

[0046] Figure 7 is a schematic diagram of the control method of the present invention;

[0047] Figure 8 It is a block diagram of the control system of the present invention.

[0048] In the figure: 1. Photovoltaic panel; 2. Cleaning device; 21. Dry cleaning component; 22. Wet cleaning component; 23. Connector; 24. Slide rail; 25. Rack; 261. First motor; 262. Second motor; 27. Gear; 28. Gear shaft; 29. ​​Water pipe. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings so that those skilled in the art can better understand the advantages and features of the present invention and thus more clearly define the scope of protection of the present invention. The embodiments described in the present invention are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present invention.

[0050] like Figure 1 As shown, a dual-mode automatic cleaning device for a waste heat coupled power generation device comprises:

[0051] Photovoltaic panel 1, which is embedded in the top of the heat storage tank of the photovoltaic waste heat utilization device and is the object to be cleaned;

[0052] The cleaning device 2 includes a dry cleaning assembly 21, a wet cleaning assembly 22, a connector 23, a slide rail assembly, and a water pipe 29; the slide rail assembly is divided into two groups, each group of which includes a slide rail 24, a rack 25, a motor 26, a gear 27, and a gear shaft 28;

[0053] The wet cleaning assembly 22 and the dry cleaning assembly 21 are relatively arranged on one set of opposite sides of the photovoltaic panel 1, and the two sets of slide rail assemblies are relatively arranged on the other set of opposite sides of the photovoltaic panel 1;

[0054] The ends of the wet cleaning assembly 22 and the dry cleaning assembly 21 are connected to the slide rail assembly through a connector 23. One end of the wet cleaning assembly 22 is connected to a water pipe 29, which extends into the interior of the wet cleaning assembly 22.

[0055] like Figure 2 、 Figure 3 As shown, the motor includes a first motor 261 that drives the wet cleaning component 22 and a second motor 262 that drives the dry cleaning component 21. The first motor 261 and the second motor 262 are respectively connected to the gear 27 through the gear shaft 28, and the gear 27 is engaged with the rack 25 arranged at the bottom of the slide rail 24; the first motor 261 and the second motor 262 are respectively driven by the gear 27 and the rack 25 to drive the wet cleaning component 22 and the dry cleaning component 21 to reciprocate on the slide rail 24 to complete the wet cleaning and dry cleaning of the surface of the photovoltaic panel 1.

[0056] Specifically, such as Figure 4 As shown, the dry cleaning component 21 and the wet cleaning component 22 are both flat brushes. A threaded hole 223 for installing the connecting piece 23 is provided on the side of one end of the dry cleaning component 21 and the wet cleaning component 22. A water supply hole 221 for connecting to the water pipe 29 is provided on the side of the other end of the wet cleaning component 22. A plurality of diversion holes 222 are provided on the bottom surface of the water supply hole 221. The plurality of diversion holes 222 are used to wet the brush at the bottom of the wet cleaning component.

[0057] Specifically, such as Figure 5 As shown, the connecting member 23 is L-shaped, and the connecting member 23 includes a short side and a long side. The end face of the short side is provided with two threaded through holes 232 for matching and connecting the dry cleaning component 21 and the wet cleaning component 22; the inner side surface of the long side is provided with a through hole 231 for connecting the first motor 261 or the second motor 262, and the first motor 261 or the second motor 262 is fixed on the inner side surface of the connecting member through the through hole 231.

[0058] Specifically, such as Figure 6 As shown, the slide rails 24 are distributed on both sides of the photovoltaic panel 1 and can serve as guide components to ensure the stability of the movement of the cleaning component; a slide groove 242 is provided inside the slide rail 24, and a rack 25 is provided at the bottom of the slide groove 242. The rack 25 is engaged with the gear 27 to convert the rotational motion of the motor into the reciprocating motion of the cleaning component;

[0059] The outer side of the slide rail 24 is provided with a central straight notch 243, and the central straight notch 243 forms a notch fit with the gear shaft 28; one end of the gear shaft 28 is connected to the first motor 261 or the second motor 262, and the other end of the gear shaft 28 is provided with a keyway, which is connected to the gear 27 through key fit;

[0060] Both ends of the slide rail 24 are provided with limit blocks 241 for limiting the displacement of the wet cleaning component to prevent it from falling off; the surface of the limit block 241 is provided with a displacement sensor, which feeds back information to the controller when the wet cleaning component moves to the end position or returns to the initial position to control the motor to reverse or stop rotating.

[0061] Specifically, the length of the slide rail 24 is slightly larger than the side length of the photovoltaic panel 1; the slide rail components on both sides of the photovoltaic panel 1 are arranged in reverse, so that the initial positions of the dry cleaning component 21 and the wet cleaning component 22 are distributed on both sides of the photovoltaic panel 1, so that the dry cleaning component 21 and the wet cleaning component 22 can be used independently or in combination.

[0062] like Figure 8 As shown, the present invention also provides a control system for a dual-mode automatic cleaning device of a waste heat coupled power generation device, comprising:

[0063] The detection module collects the temperature and power data of the photovoltaic panel through the sensor according to the collection frequency, sets the preset threshold, and determines whether to start the control module;

[0064] The control module connects the water pipe valve and the motor, and completes the wetting of the wet cleaning component brush through the start-stop valve. The motor is started by delaying the time, and the gear rack meshes to drive the wet cleaning component to clean and wipe the photovoltaic panel.

[0065] The alarm module, after completing the operation multiple times, if the detection module still determines that the power is lower than the preset threshold, the alarm mechanism of the alarm module will be activated, and the photovoltaic panels will be repaired or the cleaning components will be replaced in time.

[0066] like Figure 7 As shown, a control method for a dual-mode automatic cleaning device of a waste heat coupled power generation device is provided. The control method is implemented based on the control system of the dual-mode automatic cleaning device of the waste heat coupled power generation device as described above, and includes the following steps:

[0067] S101. The sensor collects the temperature of the bottom of the photovoltaic panel and the working efficiency of the photovoltaic panel under normal working conditions. The memory records the power generation efficiency corresponding to different temperatures and uses 90% of this power generation efficiency as a preset threshold. In addition, the power reference value is corrected in real time through the temperature sensor to avoid misjudgment caused by ambient temperature changes.

[0068] Specifically, during the offline modeling phase, when the photovoltaic panels are clean, data is collected synchronously through the PT1000 temperature sensor and Hall-effect power sensor at the bottom, continuously recording the open-circuit voltage, short-circuit current and maximum power point (MPPT) under different ambient temperatures (such as -10°C to 80°C), and focusing on collecting temperature-sensitive parameters. For example, for every 1°C increase in temperature, the power of the crystalline silicon photovoltaic panel decreases by approximately 0.4% to 0.5%.

[0069] Establish the temperature-power relationship: ,

[0070] in, is the nominal power under standard test conditions (25°C, 1000W / m²), The standard temperature is 25 degrees. is the rate temperature coefficient;

[0071] Corrected temperature-power relationship: ,in For the experimental calibration coefficient, a quadratic term is introduced into the correction formula to compensate for the nonlinear temperature drift, and 90% of the theoretical value is set as the dynamic threshold, taking into account both safety margin and sensitivity;

[0072] Generate a temperature-threshold mapping table and store it in the Flash memory;

[0073] During online operation, a sliding window filtering algorithm is used for synchronous temperature sampling. The temperature is collected once every 10 seconds and the moving average is taken for 10 consecutive times to suppress transient interference.

[0074] Perform dynamic threshold matching. If the current temperature value exists in the mapping table, directly call the corresponding threshold;

[0075] If there is no matching temperature, calculate using the linear interpolation formula:

[0076]

[0077] in, and The low-temperature and high-temperature nodes adjacent to the current temperature in the mapping table;

[0078] Finally, a closed-loop calibration is performed. After each cleaning is completed, if the power returns to above the threshold, the deviation between the actual power and the theoretical value is recorded, and the temperature coefficient is dynamically updated according to the formula:

[0079] Update the learning model: , where the learning rate is 0.05.

[0080] S102, the sensor periodically collects the voltage and current data of the photovoltaic panel, compares it with the preset threshold, and determines whether it is lower than the preset threshold. If so, proceed to S103, otherwise proceed to S108;

[0081] Specifically, the collection frequency is set to periodically collect the temperature data and power data of the photovoltaic panel, and the power data is compared with the preset power threshold at the same temperature in a dust-free environment; if it is not lower than the threshold, the cleaning device will not start and wait for the next cycle to collect data; if it is lower than the threshold, the cleaning device will be started through the controller.

[0082] S103, control the valve to open, wet the wet cleaning component for 5 seconds, and then close the valve;

[0083] Specifically, the controller first opens the water pipe valve for about 5 to 10 seconds to wet the brush of the wet cleaning component, then closes the valve and prepares to start the motor through a delay program.

[0084] S104: The first motor is started with a delay by the controller, and the motor rotates forward through the meshing of the rack and pinion to drive the wet cleaning assembly to complete a cleaning cycle. When the motor touches the limit block at the end of the slide rail, the sensor provides feedback and controls the motor to reverse and reset. When the motor touches the initial position limit block, the motor is turned off.

[0085] Specifically, the controller delays the start of the first motor's forward rotation. Torque is transmitted to the gear via the motor-gear shaft-gear path, causing the rack and pinion to mesh, driving the wet cleaning assembly from its initial position to its final position along the rail, completing a single-direction cleaning cycle. When the wet cleaning assembly hits the stop at the end of the rail, a sensor sends feedback to the controller, causing the motor to reverse and reset. When the wet cleaning assembly hits the initial stop, the first motor is turned off.

[0086] S105: The controller delays the start of the second motor, which rotates forward through the meshing of the rack and pinion to drive the dry cleaning assembly to complete a wipe, removing water stains. When the stopper at the end of the slide rail is touched, the sensor provides feedback and controls the motor to reverse and reset. When the stopper at the initial position is touched, the second motor is turned off.

[0087] Specifically, after the wet cleaning component is reset, the controller activates the second motor, which rotates forward. The meshing of the rack and pinion drives the dry cleaning component along the rail from its initial position to its final position, completing a single wipe and removing water stains. When the dry cleaning component hits the stop at the end of the rail, the sensor responds, controlling the motor to reverse and reset. When it hits the initial stop, the second motor turns off.

[0088] S106, determining whether the working efficiency of the photovoltaic panel after cleaning is lower than a preset threshold, if so, proceed to S107, if not, proceed to S108;

[0089] Specifically, after the dry cleaning component is reset, the temperature data and power data of the photovoltaic panel are collected again and compared with the preset threshold. If it is not lower than the threshold, the cleaning device will not start and wait for the next cycle to collect data; if it is lower than the threshold, further judgment will be made.

[0090] S107: Determine whether the number of operations is less than 5. If so, repeat S102, S104, and S105, and increase the number of operations by 1. If not, trigger the alarm mechanism and perform maintenance on the device.

[0091] Specifically, when a cleaning operation is completed but the power is still lower than the preset threshold, it is determined whether the number of cleaning times in the memory is less than 5 times; if it is less than 5 times, it is possible that the cleaning is not thorough, and the cleaning steps of the above-mentioned cleaning components are repeated, and the number of cleaning times in the memory is increased by 1; if it is greater than 5 times, it is possible that the photovoltaic panel is aging or the cleaning component is too dirty and cannot be effectively cleaned, so the alarm mechanism is triggered, and the photovoltaic panel is repaired or the cleaning component is replaced.

[0092] S108: End the work task of this cycle and wait for the detection task of the next cycle.

[0093] Specifically, after completing the detection, cleaning or alarm work, the work task of this week is completed, the number of detections in the memory is reset to zero, and the power data is re-detected in the next cycle.

[0094] To sum up, the present invention adopts a dual-mode collaborative cleaning system to solve the problem of residual water stains and reflections in the traditional single cleaning mode. At the same time, it introduces an intelligent threshold judgment algorithm, establishes a temperature-power dynamic correlation model, and uses a temperature sensor to correct the power reference value in real time to avoid misjudgment caused by changes in ambient temperature.

[0095] The descriptions and practices disclosed in this invention are easy to understand and comprehend for those skilled in the art, and modifications and refinements may be made without departing from the principles of the invention. Therefore, modifications and improvements made without departing from the spirit of the invention should also be considered within the scope of protection of this invention.

Claims

1. A dual-mode automatic cleaning device for a waste heat coupled power generation device, characterized in that: include: A photovoltaic panel (1), wherein the photovoltaic panel (1) is embedded in the top of a heat storage tank of a photovoltaic waste heat utilization device, and the photovoltaic panel (1) is an object to be cleaned; A cleaning device (2), the cleaning device (2) comprising a dry cleaning assembly (21), a wet cleaning assembly (22), a connector (23), a slide rail assembly and a water pipe (29); the slide rail assembly comprises two groups, each group of slide rail assemblies comprising a slide rail (24), a rack (25), a motor, a gear (27) and a gear shaft (28); The wet cleaning assembly (22) and the dry cleaning assembly (21) are relatively arranged on one set of opposite side portions of the photovoltaic panel (1), and the two sets of slide rail assemblies are relatively arranged on another set of opposite side portions of the photovoltaic panel (1); The ends of the wet cleaning assembly (22) and the dry cleaning assembly (21) are connected to the slide rail assembly via a connector (23); one end of the wet cleaning assembly (22) is connected to a water pipe (29), and the water pipe (29) extends into the interior of the wet cleaning assembly (22); The motor comprises a first motor (261) for driving a wet cleaning component (22) and a second motor (262) for driving a dry cleaning component (21); the first motor (261) and the second motor (262) are respectively connected to a gear (27) via a gear shaft (28); the gear (27) is engaged with a rack (25) arranged at the bottom of a slide rail (24); the first motor (261) and the second motor (262) respectively drive the wet cleaning component (22) and the dry cleaning component (21) to reciprocate on the slide rail (24) through the gear (27) and the rack (25), thereby completing wet cleaning and dry cleaning of the surface of the photovoltaic panel (1).

2. The dual-mode automatic cleaning device of a waste heat coupled power generation device according to claim 1, characterized in that: The dry cleaning component (21) and the wet cleaning component (22) are both flat brushes. A threaded hole (223) for mounting a connector (23) is provided on one side of the dry cleaning component (21) and the wet cleaning component (22). A water delivery hole (221) for connecting to a water pipe (29) is provided on the other side of the wet cleaning component (22). A plurality of diversion holes (222) are provided on the bottom surface of the water delivery hole (221).

3. The dual-mode automatic cleaning device for a waste heat coupled power generation device according to claim 1, characterized in that: The connecting member (23) is L-shaped and includes a short side and a long side. The end surface of the short side is provided with two threaded through holes (232) for cooperating and connecting the dry cleaning component (21) and the wet cleaning component (22); the inner side surface of the long side is provided with a through hole (231) for connecting the first motor (261) or the second motor (262).

4. The dual-mode automatic cleaning device of a waste heat coupled power generation device according to claim 1, characterized in that: The slide rails (24) are distributed on both sides of the photovoltaic panel (1), a slide groove (242) is provided inside the slide rails (24), a rack (25) is provided at the bottom of the slide groove (242), and the rack (25) is meshed with the gear (27); The outer side surface of the slide rail (24) is provided with a central straight notch (243), and the central straight notch (243) forms a notch fit with the gear shaft (28); one end of the gear shaft (28) is connected to the first motor (261) or the second motor (262), and the other end of the gear shaft (28) is provided with a keyway, which is connected to the gear (27) through key fit; Both ends of the slide rail (24) are provided with limit blocks (241) for limiting the displacement of the wet cleaning component to prevent it from falling off; a displacement sensor is provided on the surface of the limit block (241), and when the wet cleaning component moves to the end position or returns to the initial position, the information is fed back to the controller to control the motor to reverse or stop rotating.

5. The dual-mode automatic cleaning device for a waste heat coupled power generation device according to claim 4, characterized in that: The length of the slide rail (24) is slightly greater than the side length of the photovoltaic panel (1); the slide rail components on both sides of the photovoltaic panel (1) are arranged in reverse, so that the initial positions of the dry cleaning component (21) and the wet cleaning component (22) are distributed on both sides of the photovoltaic panel (1), so that the dry cleaning component (21) and the wet cleaning component (22) can be used independently or in combination.

6. A control system for a dual-mode automatic cleaning device of a waste heat coupled power generation device according to any one of claims 1 to 5, characterized in that: include: The detection module collects the temperature and power data of the photovoltaic panel through the sensor according to the collection frequency, sets the preset threshold, and determines whether to start the control module; The control module connects the water pipe valve and the motor, and completes the wetting of the wet cleaning component brush through the start-stop valve. The motor is started by delaying the time, and the gear rack meshes to drive the wet cleaning component to clean and wipe the photovoltaic panel. The alarm module, after completing the operation multiple times, if the detection module still determines that the power is lower than the preset threshold, the alarm mechanism of the alarm module will be activated, and the photovoltaic panels will be repaired or the cleaning components will be replaced in time.

7. A control method for a dual-mode automatic cleaning device of a waste heat coupled power generation device, the control method being implemented based on the control system of the dual-mode automatic cleaning device of a waste heat coupled power generation device according to claim 6, characterized in that: The steps include: S101. The sensor collects the temperature of the bottom of the photovoltaic panel and the working efficiency of the photovoltaic panel under normal working conditions. The memory records the power generation efficiency corresponding to different temperatures and uses 90% of this power generation efficiency as a preset threshold. In addition, the power reference value is corrected in real time through the temperature sensor to avoid misjudgment caused by ambient temperature changes. S102, the sensor periodically collects the voltage and current data of the photovoltaic panel, compares it with the preset threshold, and determines whether it is lower than the preset threshold. If so, proceed to S103, otherwise proceed to S108; S103, control the valve to open, wet the wet cleaning component for 5 seconds, and then close the valve; S104: The first motor is started with a delay by the controller, and the motor rotates forward through the meshing of the rack and pinion to drive the wet cleaning assembly to complete a cleaning cycle. When the motor touches the limit block at the end of the slide rail, the sensor provides feedback to control the first motor to reverse and reset. When the motor touches the initial position limit block, the motor is turned off. S105: The controller delays the start of the second motor, which rotates forward and drives the dry cleaning component to complete a wipe through the meshing of the gear rack to remove water stains. When the stop block at the end of the slide rail is touched, the sensor feedback information controls the second motor to reverse and reset. When the initial position stop block is touched, the second motor is turned off. S106, determining whether the working efficiency of the photovoltaic panel after cleaning is lower than a preset threshold, if so, proceed to S107, if not, proceed to S108; S107: Determine whether the number of operations is less than 5. If so, repeat S102, S104, and S105, and increase the number of operations by 1. If not, trigger the alarm mechanism and perform maintenance on the device. S108: End the work task of this cycle and wait for the detection task of the next cycle.

8. The control method of a dual-mode automatic cleaning device of a waste heat coupled power generation device according to claim 7, characterized in that: In S102, a collection frequency is set to periodically collect temperature data and power data of the photovoltaic panel, and the power data is compared with a preset power threshold at the same temperature in a dust-free environment; If it is not lower than the threshold, the cleaning device will not start and wait for the next cycle to collect data; If it is below the threshold, the cleaning device is activated by the controller.

9. The control method of a dual-mode automatic cleaning device of a waste heat coupled power generation device according to claim 7, characterized in that: In S106, after the dry cleaning component is reset, the temperature data and power data of the photovoltaic panel are collected again and compared with the preset threshold value. If the data is not lower than the threshold value, the cleaning device is not started and waits for the next cycle to collect data; If it is lower than the threshold, further judgment is made.

10. The control method of a dual-mode automatic cleaning device of a waste heat coupled power generation device according to claim 7, characterized in that: In S107, when a cleaning operation is completed but the power is still lower than the preset threshold, it is determined whether the number of cleaning times in the memory is less than 5 times; if it is less than 5 times, it is possible that the cleaning is not thorough, and the cleaning steps of the above-mentioned cleaning components are repeated, and the number of cleaning times in the memory is increased by 1; if it is greater than 5 times, it is possible that the photovoltaic panel is aging or the cleaning component is too dirty and cannot be effectively cleaned, so the alarm mechanism is triggered, and the photovoltaic panel is repaired or the cleaning component is replaced.

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