Cleaning system and photovoltaic system

Abstract

The utility model discloses a cleaning system and a photovoltaic system, and relates to the technical field of photovoltaic cleaning, the cleaning system comprises a water source module, a circulating water return pipeline, a water storage tank, a water inlet pipeline, a driving module and a cleaning module; the water storage tank is provided with a first water inlet end, a second water inlet end and a water outlet end; the other end of the water inlet pipeline is communicated with the first water inlet end of the water storage tank; the water inlet end of the driving module communicates with the water outlet end of the water storage tank, and the water outlet end of the driving module communicates with the second water inlet end of the water storage tank through a circulating water return pipeline, so that a water circulation loop is constructed between the water storage tank and the driving module; the cleaning module communicates with the water outlet end of the driving module. Snow removing operation can be conducted with high efficiency and low cost, and the snow removing requirements under various application scenes are met.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cleaning technology, and in particular to a cleaning system and a photovoltaic system. Background Art

[0002] During the operation of a photovoltaic power station, if the surface of the photovoltaic modules is covered with snow, its ability to absorb and convert sunlight will be severely weakened, thereby significantly reducing the power generation efficiency of the photovoltaic power station, resulting in reduced power generation and decreased power generation revenue.

[0003] Currently, manual snow removal is typically performed by maintenance personnel using appropriate tools. However, this method is not only inefficient and costly, but also poses significant safety risks for maintenance personnel at distributed power stations, where snow removal is more challenging. Consequently, this method is limited to ground-based power stations and has a limited scope of application. Utility Model Content

[0004] The main purpose of this application is to provide a cleaning system that aims to perform snow removal operations with high efficiency and low cost, and meet the snow removal needs in various application scenarios.

[0005] To achieve the above objectives, the present application proposes a cleaning system comprising:

[0006] Water source module, circulating return water pipeline;

[0007] A water storage tank having a first water inlet end, a second water inlet end, and a water outlet end;

[0008] a water inlet pipe, one end of which is connected to the water source module, and the other end of which is connected to the first water inlet end of the water storage tank;

[0009] A driving module, wherein the water inlet of the driving module is connected to the water outlet of the water storage tank, and the water outlet of the driving module is connected to the second water inlet of the water storage tank through the circulating return pipe, so as to form a water circulation loop between the water storage tank and the driving module;

[0010] A cleaning module is connected to the water outlet of the driving module.

[0011] In one embodiment, a thermometer is provided inside the water tank for detecting the water temperature of the water tank; a return valve is provided on the circulating return water pipeline, and the return valve is provided between the driving module and the water tank; the cleaning system also includes a controller, and the controller is used to control the opening and closing of the return valve.

[0012] In one embodiment, the cleaning system further comprises:

[0013] A material storage module is provided in the circulating return water pipeline, the water inlet end of the material storage module is connected to the water outlet end of the driving module, and the water outlet end of the material storage module is connected to the second water inlet end of the water storage tank. The material storage module is used to provide snow removal agent, cleaning agent and / or fire extinguishing agent.

[0014] In one embodiment, the storage module is a multi-bin storage tank, which includes a snow removal agent storage bin, a detergent storage bin, a fire extinguishing agent storage bin and a discharge bin. The discharge bin is located below the discharge end of the snow removal agent storage bin, the discharge end of the detergent storage bin and the discharge end of the fire extinguishing agent storage bin, and the water inlet and outlet of the storage module are located in the discharge bin.

[0015] In one embodiment, the discharge end of the snow removal agent storage bin, the discharge end of the cleaning agent storage bin, and the discharge end of the fire extinguishing agent storage bin are all provided with a discharge control device for controlling the discharge speed;

[0016] The material unloading control device includes a material storage partition and a partition controller. The partition controller is connected to the movable part of the material storage partition and is used to control the opening of the material storage partition.

[0017] In one embodiment, the discharge ends of the snow removal agent storage bin, the cleaning agent storage bin, and the fire extinguishing agent storage bin are all provided with discharge weight detection devices for detecting the weight of the discharge entering the discharge bin.

[0018] In one embodiment, the storage module includes a snow removal agent storage tank, a cleaning agent storage tank and a fire extinguishing agent storage tank, the water inlet end of the storage module includes the water inlet end of the snow removal agent storage tank, the water inlet end of the cleaning agent storage tank and the water inlet end of the fire extinguishing agent storage tank, and the water outlet end of the storage module includes the water outlet end of the snow removal agent storage tank, the water outlet end of the cleaning agent storage tank and the water outlet end of the fire extinguishing agent storage tank.

[0019] In one embodiment, a partition and an agitator are provided inside the water tank, the partition is provided on a side close to the first water inlet end of the water tank, and the agitator is provided between the second water inlet end of the water tank and the water outlet end of the water tank.

[0020] In one embodiment, a high water level densitometer and a low water level densitometer are arranged at intervals along the depth direction of the water storage tank, and the high water level densitometer and the low water level densitometer are used to detect the water level and liquid density in the water storage tank.

[0021] In one embodiment, at least one pipeline included in the cleaning system is provided with a drain valve, and the drain valve is used to drain the liquid in the cleaning system when the cleaning system stops working; and / or,

[0022] The cleaning system is further provided with a recovery module, the recovery module being connected to the area cleaned by the cleaning module and being used to recover liquid from the area cleaned by the cleaning module; and / or,

[0023] The cleaning system further comprises a heating module, which is arranged between the water source module and the water storage tank and is used to heat the water inlet pipeline.

[0024] In addition, to achieve the above-mentioned purpose, the present application also provides a photovoltaic system, which includes a photovoltaic module and the above-mentioned new energy hydrogen production system, and the cleaning system is used to clean the photovoltaic components of the photovoltaic module.

[0025] The present application provides a cleaning system comprising a water source module, a water inlet pipeline, a water storage tank, a drive module, a circulating return pipeline, and a cleaning module. The water storage tank has a first water inlet, a second water inlet, and a water outlet. One end of the water inlet pipeline is connected to the water source module, and the other end is connected to the first water inlet of the water storage tank. The water inlet of the drive module is connected to the water outlet of the water storage tank, and the water outlet of the drive module is connected to the second water inlet of the water storage tank via a circulating return pipeline, thereby establishing a water circulation loop between the water storage tank and the drive module. Thus, water supplied to the water storage tank by the water source module circulates between the water storage tank and the drive module in a water circulation loop from the water storage tank to the drive module. During this process, the water in the water circulation loop is continuously heated due to heat generated by the motor of the drive module and heat energy converted from mechanical energy applied to the water. The cleaning module is connected to the water outlet of the drive module, thereby supplying the heated water to the cleaning module, enabling the cleaning module to use the hot water for snow removal. Therefore, the present application provides a cleaning system that can automatically complete snow removal operations. Compared with manual snow removal methods, it not only improves snow removal efficiency and reduces snow removal costs, but is also suitable for snow removal operations under various environmental conditions and meets snow removal needs in a variety of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of the module structure of the cleaning system provided in the first embodiment of the present application;

[0028] Figure 2A schematic diagram of the internal structure of a water storage tank provided in the first embodiment of the present application;

[0029] Figure 3 A schematic diagram of the internal structure of a water spray unit provided in the first embodiment of the present application;

[0030] Figure 4 A schematic structural diagram of a cleaning system provided in the second embodiment of the present application;

[0031] Figure 5 A schematic structural diagram of a cleaning system provided in the third embodiment of the present application;

[0032] Figure 6 A schematic structural diagram of a cleaning system provided in a fourth embodiment of the present application;

[0033] Figure 7 A schematic structural diagram of a cleaning system provided in a fifth embodiment of the present application;

[0034] Figure 8 A schematic diagram of the internal structure of a multi-storage tank provided in the seventh embodiment of the present application;

[0035] Figure 9 A schematic structural diagram of a cleaning system provided in an eighth embodiment of the present application;

[0036] Figure 10 Schematic diagram of the internal structure of the water tank provided in the ninth embodiment of the present application.

[0037] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0038] Description of Figure Numbers:

[0039] 10. Water source module; 20. Water inlet pipe; 21. Water inlet valve; 30. Water storage tank; 31. Thermometer; 32. High water level density meter; 33. Low water level density meter; 34. Partition; 35. Agitator; 301. First water inlet end of the water storage tank; 302. Second water inlet end of the water storage tank; 303. Water outlet end of the water storage tank; 40. Drive module; 50. Circulating return pipe; 51. Return valve; 60. Cleaning module; 61. Cleaning pipe; 611. Check valve; 62. Cleaning unit; 622. Spray head; 623. Water spray control switch; 70. Drain valve; 80. Recovery module; 81 , recovery pipeline; 82, recovery unit; 821, recovery control switch; 822, recovery device; 90, heating module; 100, storage module; 101, water inlet end of storage module; 102, water outlet end of storage module; 103, fire probe; 110, multi-bin storage tank; 111, snow removal agent storage bin; 112, detergent storage bin; 113, fire extinguishing agent storage bin; 114, unloading bin; 115, storage partition; 116, partition controller; 117, unloading weight detection device; 120, snow removal agent storage tank; 130, detergent storage tank; 140, fire extinguishing agent storage tank. DETAILED DESCRIPTION

[0040] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] It should be noted that the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0043] During the operation of a photovoltaic power station, if the surface of the photovoltaic modules is covered with snow, its ability to absorb and convert sunlight will be severely weakened, thereby significantly reducing the power generation efficiency of the photovoltaic power station, resulting in reduced power generation and decreased power generation revenue.

[0044] Currently, manual snow removal is typically performed by maintenance personnel using appropriate tools. However, this method is not only inefficient and costly, but also poses significant safety risks for maintenance personnel at distributed power stations, where snow removal is more challenging. Consequently, this method is limited to ground-based power stations and has a limited scope of application.

[0045] Based on this, the present application provides a cleaning system. In the first embodiment of the present application, please refer to Figure 1 The cleaning system may include a water source module 10, a water inlet pipe 20, a water storage tank 30, a driving module 40, a circulating return water pipe 50 and a cleaning module 60; the water storage tank 30 has a first water inlet end 301, a second water inlet end 302 and a water outlet end 303; one end of the water inlet pipe 20 is connected to the water source module 10, and the other end is connected to the first water inlet end 301 of the water storage tank 30; the water inlet end 401 of the driving module 40 is connected to the water outlet end 303 of the water storage tank 30, and the water outlet end 402 of the driving module 40 is connected to the second water inlet end 302 of the water storage tank 30 through the circulating return water pipe 50, so as to construct a water circulation loop between the water storage tank 30 and the driving module 40; the cleaning module 60 is connected to the water outlet end 402 of the driving module 40.

[0046] It should be noted that the driving module 40 may be a water pump, a pressurizing device or other equipment with driving capability.

[0047] It is understood that after the water outlet 402 of the driver module 40 is connected to the second water inlet 302 of the water tank 30 via the circulating return water pipe 50, the water flowing out of the water outlet 402 of the driver module 40 will flow back to the second water inlet 302 of the water tank 30 through the circulating return water pipe 50, and then will flow from the water outlet 303 of the water tank 30 into the water inlet 401 of the driver module 40, thereby forming a water circulation loop of "water tank 30->driver module 40->water tank 30", so that the water provided to the water tank 30 by the water source module 10 circulates between the water tank 30 and the driver module 40. During the process of water circulation between the water tank 30 and the driver module 40, the water in the water circulation loop will be continuously heated due to the heat generated by the motor of the driver module 40 and the heat energy converted from the mechanical energy used to work on the water. The cleaning module 60 is connected to the water outlet 402 of the driving module 40 , so that the heated water can be supplied to the cleaning module 60 , so that the cleaning module 60 can use the hot water to remove snow.

[0048] During actual snow removal using hot water, the cleaning system can flexibly plan and determine the specific area of the photovoltaic area (i.e., the area being cleaned by the cleaning module 60) to be sprayed with hot water based on the currently available hot water supply, ensuring efficient use of hot water resources and maximizing snow removal effectiveness. Specifically, if the currently available hot water supply is sufficient, hot water can be sprayed over a large area to directly remove snow using the hot water. If the currently available hot water supply is limited, hot water can be sprayed over a smaller area to utilize the hot water and the subsequent hot spot effect of the component power generation to remove snow.

[0049] In a feasible embodiment, the water inlet pipe 20 may be provided with a water inlet valve 21, which is provided between the water source module 10 and the water storage tank 20. When the cleaning system is not working, the water inlet valve 21 will always remain closed to prevent water from entering the water storage tank 20.

[0050] In one feasible embodiment, to facilitate water entering the water tank 30, the first water inlet 301 and the second water inlet 302 of the water tank 30 can be located above the water surface in the water tank 30. If they are located below the water surface, a higher pressure is required to pump water into the water tank 30, which will increase the cost of snow removal. Similarly, to facilitate water flowing out of the water tank 30, the water outlet 303 of the water tank 30 can be located below the water surface in the water tank 30. In other feasible embodiments, the first water inlet 301 and the second water inlet 302 of the water tank 30 can also be located below the water surface in the water tank 30, and the water outlet 303 of the water tank 30 can also be located above the water surface in the water tank 30. This embodiment does not specifically limit this.

[0051] In one possible implementation, please refer to Figure 2 A thermometer 31 may be provided inside the water tank 30 for detecting the water temperature of the water tank 30; a return valve 51 is provided on the circulating return water pipeline 50, and the return valve 51 is provided between the drive module 40 and the water tank 30; the cleaning system also includes a controller, which is used to control the opening and closing of the return valve 51.

[0052] It should be noted that if the return valve 51 remains open, the speed at which water flows from the drive module 40 to the cleaning module 60 will be affected, thereby affecting the snow removal efficiency of the cleaning module 60. Therefore, to ensure the snow removal efficiency of the cleaning module 60, the controller of the cleaning system can control the opening and closing of the return valve 51 based on the water temperature of the water tank 30. Specifically, when the water temperature of the water tank 30 exceeds a preset temperature threshold, the return valve 51 is closed; when the water temperature of the water tank 30 is less than or equal to the preset temperature threshold, the return valve 51 is opened.

[0053] In a feasible embodiment, the cleaning module 60 may include a cleaning pipe 61 and at least one water spray unit 62, and the cleaning pipe 61 connects the water outlet end 621 of the water spray unit 62 and the water outlet end 401 of the driving module 40 to drive the water in the cleaning pipe 61 to flow toward the water spray unit 62.

[0054] It should be noted that the cleaning pipeline 61 connects the water outlet 621 of the water spray unit 62 and the water outlet 401 of the drive module 40. Therefore, the water heated by the water circulation loop is pumped into the water spray unit 62 under the driving force of the drive module 40. This ensures the impact of the water flow from the water spray unit 62 and improves the snow removal effect. The cleaning module 60 can have one or more water spray units 62, which can be flexibly configured according to the distribution method and installation area of the photovoltaic modules. This is not specifically limited in this embodiment.

[0055] In a feasible embodiment, a plurality of water spray units 62 may be configured, and the plurality of water spray units 62 are arranged in parallel.

[0056] It should be noted that the parallel arrangement of the water spray units 62 can shorten the length of the cleaning pipeline 61 and reduce the difference in flow paths between different water spray units 62. Therefore, the parallel arrangement of the water spray units 62 can not only reduce the driving force required by the driving module 40, but also reduce the difference in water flow impact intensity between different water spray units 62.

[0057] In one possible implementation, please refer to Figure 3 The water spray unit 62 may include a nozzle 622 and a water spray control switch 623. The nozzle 622 is used to spray the surface of the photovoltaic module. The water spray control switch 623 is used to control the operation of the nozzle 622, so that the multiple water spray units 62 can operate independently. The water spray control switch 623 can be configured as a valve body structure such as a solenoid valve.

[0058] In one feasible embodiment, during the process of heating water using the water circulation loop, to prevent water from flowing from the drive module 40 to the cleaning module 60 and affecting the heating effect, a check valve 611 can be provided on the cleaning pipeline 61. The check valve 611 is provided between the drive module 40 and the water spray unit 62. When the return valve 51 is open, the check valve 611 needs to be closed; when the water heating is completed, the check valve 611 needs to be opened.

[0059] It should be noted that the check valve 611 can be a normally open solenoid valve, normally open, while the return valve 51 can be a normally closed solenoid valve, normally closed. That is, when the cleaning system controller does not issue an action command, the check valve 611 remains normally open, and the return valve 51 remains normally closed. Water supplied to the driver module 40 flows from the cleaning line 61 into the photovoltaic area. When the cleaning system controller issues an action command, the check valve 611 closes and the return valve 51 opens, allowing the water supplied to the driver module 40 to flow from the circulating return line 50 into the water storage tank 30.

[0060] This embodiment provides a cleaning system, which includes a water source module 10, a water inlet pipe 20, a water tank 30, a drive module 40, a circulating return pipe 50, and a cleaning module 60. The water tank 30 has a first water inlet end 301, a second water inlet end 302, and a water outlet end 303. One end of the water inlet pipe 20 is connected to the water source module 10, and the other end is connected to the first water inlet end 301 of the water tank 30. The water inlet end 401 of the drive module 40 is connected to the water outlet end 303 of the water tank 30, and the water outlet end 402 of the drive module 40 is connected to the second water inlet end 302 of the water tank 30 via the circulating return pipe 50, thereby establishing a water circulation loop between the water tank 30 and the drive module 40. Thus, water provided by the water source module 10 to the water tank 30 circulates between the water tank 30 and the drive module 40 in the form of a water circulation loop of "water tank 30 -> drive module 40 -> water tank 30". During the flow process, the water in the water circulation loop will be continuously heated due to the heat generated by the motor of the drive module 40 and the heat energy converted from the mechanical energy used to do work on the water. The cleaning module 60 is connected to the water outlet 402 of the drive module 40, so that the heated water can be supplied to the cleaning module 60, so that the cleaning module 60 can use the hot water to remove snow. Therefore, this embodiment provides a cleaning system that can automatically complete snow removal operations. Compared with manual snow removal methods, it not only improves snow removal efficiency and reduces snow removal costs, but is also applicable to snow removal operations under various environmental conditions and meets the snow removal needs of various application scenarios.

[0061] Based on the above-mentioned first embodiment, a second embodiment of the cleaning system of the present application is proposed. In the second embodiment of the present application, a drain valve 70 is provided on at least one pipeline included in the cleaning system. The drain valve 70 is used to drain the liquid in the cleaning system when the cleaning system stops working.

[0062] In one possible implementation, please refer to Figure 4 The drain valve 70 of the cleaning system can be arranged on the water inlet pipe 20 , on the pipe connecting the water storage tank 30 and the driving module 40 , and on the cleaning pipe 61 .

[0063] The controller of the cleaning system can control the opening and closing of the drain valve 70 according to the ambient temperature. Specifically, when the ambient temperature is lower than a certain temperature, the drain valve 70 can be opened to drain the water in the cleaning system to prevent the cleaning system from being damaged by the freezing of the residual liquid inside.

[0064] Based on the above-mentioned first embodiment and / or second embodiment, a third embodiment of the cleaning system of the present application is proposed. In the third embodiment of the present application, the cleaning system is also provided with a recovery module 80, which is connected to the area cleaned by the cleaning module 60 and is used to recover the liquid in the area cleaned by the cleaning module 60.

[0065] In a feasible embodiment, the recovery module 80 may include a recovery pipeline 81 and a recovery unit 82 ; the recovery pipeline 81 connects the area cleaned by the cleaning module 60 and the recovery unit 82 .

[0066] In one possible implementation, please refer to Figure 5 The recovery unit 82 may include a recovery control switch 821 and a recovery device 822. The recovery control switch 821 is used to control the operation of the recovery device 822, which is used to recover liquid from the area cleaned by the cleaning module 60 (corresponding to the photovoltaic area in the figure). The recovery control switch 821 may be configured as a valve body structure such as a solenoid valve.

[0067] In this embodiment, the liquid in the area cleaned by the cleaning module 60 is recovered by the recovery module 80, so that the liquid remaining in the area cleaned by the cleaning module 60 can be prevented from causing adverse effects on the components in the cleaning area (for example, the liquid formed by the deicing agent mentioned later after mixing with water is corrosive to a certain extent).

[0068] Based on the above-mentioned first embodiment, second embodiment and / or third embodiment, a fourth embodiment of the cleaning system of the present application is proposed. In the fourth embodiment of the present application, please refer to Figure 6 The cleaning system may further include a heating module 30 (illustrated as a heating zone in the figure), which is disposed between the water source module 10 and the water storage tank 30 for heating the water inlet pipe 20 .

[0069] It is understandable that the water inlet pipe 20 is prone to freezing in winter. Once the water inlet pipe 20 freezes, the cleaning system will be unable to take in or drain water. Therefore, this embodiment provides a heating module 30 between the water source module 10 and the water storage tank 30 to heat the water inlet pipe 20, thereby preventing freezing of the water inlet pipe 20 due to low ambient temperature and ensuring the fluidity of the water in the water inlet pipe 20.

[0070] In a feasible embodiment, the heating module 90 may include a heating wire 91 and aluminum foil insulation cotton 92. The heating wire 91 may be arranged on the periphery of the water inlet pipe 20, and the aluminum foil insulation cotton 92 may wrap the water inlet pipe 20 for insulation.

[0071] Based on the above-mentioned first embodiment, second embodiment, third embodiment and / or fourth embodiment, a fifth embodiment of the cleaning system of the present application is proposed. In the fifth embodiment of the present application, please refer to Figure 7 The cleaning system may further include a storage module 100, which is arranged in the circulating return water pipeline 50, the water inlet end 101 of the storage module 100 is connected to the water outlet end 402 of the driving module 40, and the water outlet end 102 of the storage module 100 is connected to the second water inlet end 302 of the water storage tank 30, and the storage module 100 is used to provide snow removal agent.

[0072] It should be noted that the snow removal agent can be a granular or liquid object.

[0073] In this embodiment, a storage module 100 is provided on the circulating return water pipeline 50, and the water inlet end 101 of the storage module 90 is connected to the water outlet end 402 of the driving module 40, and the water outlet end 102 of the storage module 100 is connected to the second water inlet end 302 of the water storage tank 30. Thus, water flowing out of the water outlet end 402 of the driving module 40 will first flow into the water inlet end 101 of the storage module 100 through the circulating return water pipeline 50, carrying out the snow removal agent stored in the storage module 100, and then be introduced from the water outlet end 102 of the storage module 100 into the second water inlet end 302 of the water storage tank 30, and then flow from the water outlet end 303 of the water storage tank 30 into the water inlet end 401 of the driving module 40, thereby forming a water circulation loop of "water storage tank 30 -> driving module 40 -> storage module 100 -> water storage tank 30". In this water circulation loop, not only is the water in the loop heated, but the storage module 100 also provides deicing agent to mix with the water. As a result, the liquid sprayed onto the photovoltaic panels by the cleaning module 60 is not only hot but also contains deicing agent, further improving snow removal efficiency.

[0074] Based on the fifth embodiment described above, a sixth embodiment of the cleaning system of the present application is proposed. In the sixth embodiment of the present application, the storage module 100 can also be used to provide cleaning agents.

[0075] It should be noted that the cleaning agent can be a granular or liquid object.

[0076] Understandably, for photovoltaic power plants located in high-energy-consuming, highly polluting areas such as steel mills and cement plants, using only water to clean photovoltaic modules is difficult to achieve effective cleaning results due to the severe chemical pollution. Therefore, this embodiment, by providing a storage module 100, can also be used to provide a cleaning agent. In the water circulation loop formed by "water tank 30 -> drive module 40 -> storage module 100 -> water tank 30," the cleaning agent provided by the storage module 100 mixes with the water. This ensures that the liquid sprayed onto the photovoltaic modules by the cleaning module 60 contains the cleaning agent, achieving an effective cleaning effect.

[0077] After the cleaning module 60 sprays the liquid mixed with the detergent onto the cleaning area, the timing of spraying clean water onto the component can be determined based on the chemical reaction time of the detergent on the component. If the chemical reaction time is sufficient, the cleaning module 60 can spray the clean water directly onto the component to achieve a good cleaning effect. Otherwise, it is necessary to wait for a period of time before spraying the clean water onto the component to ensure a good cleaning effect.

[0078] Based on the sixth embodiment described above, a seventh embodiment of the cleaning system of the present application is proposed. In the seventh embodiment of the present application, the storage module 100 can also provide a fire extinguishing agent.

[0079] It should be noted that the fire extinguishing agent can be a granular or liquid object.

[0080] For photovoltaic areas in photovoltaic power stations that are located in visual blind spots such as factory roofs, it is often difficult to detect fires in the early stages of the fire. Therefore, in a feasible embodiment, a fire probe 103 can be set in the photovoltaic area so that the cleaning system controls whether the storage module 100 releases fire extinguishing agent based on the fire probe 103. The fire probe 103 can be a temperature sensor, a smoke sensor, or an infrared probe to detect whether there is a fire in the photovoltaic area. If the fire probe 103 detects a fire in the photovoltaic area, the storage module 100 is controlled to release the fire extinguishing agent, so that the fire extinguishing agent released by the storage module 100 is mixed with water in the water circulation loop formed by "water tank 30->drive module 40->storage module 100->water tank 30". As a result, the liquid sprayed onto the photovoltaic components by the cleaning module 60 contains fire extinguishing agent, thereby achieving fire extinguishing.

[0081] Based on the seventh embodiment, an eighth embodiment of the cleaning system of the present application is proposed. In the eighth embodiment of the present application, please refer to Figure 8The storage module 100 can be a multi-bin storage tank 110, which can include a snow removal agent storage bin 111, a cleaning agent storage bin 112, a fire extinguishing agent storage bin 113 and a discharge bin 114. The discharge bin 114 is located below the discharge end of the snow removal agent storage bin 111, the discharge end of the cleaning agent storage bin 112 and the discharge end of the fire extinguishing agent storage bin 113. The water inlet end 101 and the water outlet end 102 of the storage module 100 are located in the discharge bin 114.

[0082] In a feasible embodiment, the discharge ends of the snow removal agent storage bin 111 , the cleaning agent storage bin 112 , and the fire extinguishing agent storage bin 113 are all provided with discharge control devices for controlling the discharge speed.

[0083] In one possible implementation, please refer to Figure 8 The material unloading control device may include a material storage partition 115 and a partition controller 116. The partition controller 116 is connected to the movable portion of the material storage partition 115 and is used to control the opening of the material storage partition 115. The partition controller 116 may be a motor.

[0084] It is understood that by controlling the opening of the storage partition 115 via the partition controller 116, the snow removal agent in the snow removal agent storage bin 111, the detergent in the detergent storage bin 112, or the fire extinguishing agent in the fire extinguishing agent storage bin 113 can be lowered into the lower hopper 114. Since the water inlet and outlet of the storage module 100 are located in the lower hopper 114, after the return valve 51 is opened, the water supplied by the drive module 40 will enter the lower hopper 114 within the multi-bin storage tank 110, thereby flushing the granular or liquid objects in the lower hopper into the water storage tank 30 to form a water mixture.

[0085] In one possible implementation, please refer to Figure 8 The discharge ends of the snow removal agent storage bin 111, the cleaning agent storage bin 112, and the fire extinguishing agent storage bin 113 are all provided with discharge weight detection devices 117 for detecting the weight of the discharge entering the discharge bin. The discharge weight detection devices 117 may be pressure sensors.

[0086] For example, using salt as the deicing agent, the total weight of granular salt that should be added can be calculated in advance based on the ambient temperature, the liquid volume in the water tank 30, and the melting point of the salt water. For example, if the ambient temperature is -15°C and the liquid volume in the water tank 30 is 1m³, then if a 20% sodium chloride solution can meet the snowmelt requirement, assuming the concentration is X, the weight M of granular salt that needs to be added is 1000X / (1-X). Based on this, after the discharge weight detection device 117 detects that the weight of the granular salt entering the discharge silo has reached 1000X / (1-X), the partition controller 116 at the discharge end of the deicing agent storage silo 11 will control the storage partition 115 to open to zero (i.e., control the storage partition 115 to close), and no more material will be discharged.

[0087] Based on the seventh embodiment, an eighth embodiment of the cleaning system of the present application is proposed. In the eighth embodiment of the present application, please refer to Figure 9 The storage module 100 may include a snow removal agent storage tank 120, a cleaning agent storage tank 130 and a fire extinguishing agent storage tank 140. The water inlet end 101 of the storage module 100 includes the water inlet end 121 of the snow removal agent storage tank 120, the water inlet end 131 of the cleaning agent storage tank 130 and the water inlet end 141 of the fire extinguishing agent storage tank 140. The water outlet end 102 of the storage module 100 includes the water outlet end 122 of the snow removal agent storage tank 120, the water outlet end 132 of the cleaning agent storage tank 130 and the water outlet end 142 of the fire extinguishing agent storage tank 140.

[0088] In a feasible embodiment, the snow removal agent storage tank 120 , the cleaning agent storage tank 130 , and the fire extinguishing agent storage tank 140 may each include a storage bin and a discharge bin.

[0089] Among them, the unloading end of the storage bin can be provided with a unloading control device for controlling the unloading speed; it can also be provided with a unloading weight detection device for detecting the weight of the unloading material entering the unloading bin.

[0090] Based on the above fifth embodiment, sixth embodiment, seventh embodiment and / or eighth embodiment, a ninth embodiment of the cleaning system of the present application is proposed. In the ninth embodiment of the present application, please refer to Figure 10 , a partition 34 and an agitator 35 may also be provided inside the water tank 30. The partition 34 is provided on one side close to the first water inlet end 301 of the water tank 30, and the agitator 35 is provided between the second water inlet end 302 of the water tank 30 and the water outlet end 303 of the water tank 30.

[0091] It should be noted that the agitator 35 can be fixed in the water tank 30 via a shaft.

[0092] In this embodiment, an agitator 35 is provided between the second water inlet end 302 of the water tank 30 and the water outlet end 303 of the water tank 30. Since the second water inlet end 302 of the water tank 30 is connected to the water outlet end of the material storage module 100, water flows out of the material storage module 100, carrying water and mixture that falls from the second water inlet end 302 of the water tank 30, thereby driving the agitator 35 to rotate, thoroughly stirring the water and mixture in the water tank 30 and preventing particulate matter in the mixture from settling and solidifying. A partition 34 is provided on one side of the water tank 30 near the first water inlet end 301, so that the agitator 35 is not driven by the water flow when the water source module 10 supplies water to the water tank 30.

[0093] Based on the above fifth embodiment, sixth embodiment and / or seventh embodiment, a tenth embodiment of the cleaning system of the present application is proposed. In the tenth embodiment of the present application, please refer to Figure 2 A high water level density meter 32 and a low water level density meter 33 may be arranged at intervals along the depth direction of the water tank 30 . The high water level density meter 32 and the low water level density meter 33 may be used to detect the water level and liquid density in the water tank 30 .

[0094] It should be noted that the density of water is 1g / cm 3 The density of air is 0, so the density meter can not only detect the liquid density, but also the water level in the water tank 30.

[0095] In the case where the high water level densitometer 32 and the low water level densitometer 33 are used to detect the water level in the water tank 30, the water level in the water tank 30 is essentially determined by the density values detected by the high water level densitometer 32 and the low water level densitometer 33. The purpose of the high water level densitometer 32 detecting the water level is to detect whether the water level in the water tank 30 has reached the water level condition that can trigger the operation of the cleaning module 60; the purpose of the low water level densitometer 33 detecting the water level is to detect whether there is still water in the water tank 30 that can be supplied to the cleaning module 60. Specifically, if the density value detected by the high water level densitometer 32 is greater than or equal to 1g / cm 3 If the water level in the water tank 30 reaches the position of the high water level densitometer 32, it means that the water level in the water tank 30 has reached the water level condition that can trigger the operation of the cleaning module 60. Otherwise, it has not reached the water level condition. If the low water level densitometer 33 detects a density value of zero, that is, the water level in the water tank 30 is detected to be zero, it means that there is no water in the water tank 30 that can be provided to the cleaning module 60. Otherwise, there is water in the water tank 30.

[0096] On this basis, the cleaning system's controller can control the operation of the cleaning module 60 based on the water levels detected by the high-water-level densitometer 32 and the low-water-level densitometer 33. Specifically, when the high-water-level densitometer 32 detects that the water level in the water tank 30 has reached the level required to trigger the operation of the cleaning module 60, the cleaning module 60 can be controlled to begin operation. Consequently, the driver module 40 will continuously pump water from the water tank 30 to the cleaning module 60, enabling the cleaning module 60 to perform snow removal operations. When the low-water-level densitometer 33 detects that there is no water in the water tank 30 sufficient to supply the cleaning module 60, the cleaning module 60 can be controlled to cease operation. Consequently, the driver module 40 will not pump water from the water tank 30, thus preventing the driver module 40 from pumping water dry, which could compromise the safety of the cleaning system.

[0097] When the high water level densitometer 32 and the low water level densitometer 33 are used to detect the density of the liquid in the water tank 30, the controller of the cleaning system can determine whether the snow removal agent, cleaning agent and / or fire extinguishing agent provided by the storage module 100 is fully mixed with the water based on the density values detected by the high water level densitometer 32 and the low water level densitometer 33 respectively, so as to control the return valve 51 and the check valve 611, thereby ensuring that the cleaning system can complete the snow removal operation, cleaning operation and / or fire extinguishing operation efficiently.

[0098] For example, consider the case where the storage module 100 provides a deicing agent, and the deicing agent is salt. Since the density of granular salt is 2.165 g / cm³, if it is not fully dissolved, the density value detected by the low-water-level densitometer 33 will be much greater than the density value detected by the high-water-level densitometer 32. Therefore, to ensure that the cleaning system can efficiently complete the deicing operation, the return valve 51 can be closed and the check valve 611 opened after the density value detected by the low-water-level densitometer 33 is substantially consistent with the density value detected by the high-water-level densitometer 32, that is, after the granular salt is substantially dissolved.

[0099] During actual snow removal using saline solution, the cleaning system can flexibly plan and determine the specific area within the photovoltaic area (i.e., the area being cleaned by cleaning module 60) where the saline solution needs to be sprayed based on the currently available saline solution supply, ensuring efficient use of the saline solution and maximizing the snow removal effect. Specifically, if the currently available saline solution is sufficient, the saline solution can be sprayed over a large area to directly remove the snow using the saline solution. If the currently available saline solution is limited, the saline solution can be sprayed over a smaller area to utilize the saline solution in conjunction with the hot spot effect of subsequent module power generation to remove the snow.

[0100] This application also provides a photovoltaic system, which includes a photovoltaic module and a cleaning system. The cleaning system is used to clean the photovoltaic components of the photovoltaic module. The structure of the cleaning system can refer to the above-mentioned embodiment and will not be described in detail here. As the photovoltaic system of this embodiment includes all technical solutions of all the above-mentioned cleaning system embodiments and achieves the same technical effects, it will not be described in detail here.

[0101] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A cleaning system, characterized in that: include: Water source module, circulating return water pipeline; A water storage tank, the water storage tank having a first water inlet end, a second water inlet end and a water outlet end; a water inlet pipe, one end of which is connected to the water source module, and the other end of which is connected to the first water inlet end of the water storage tank; A driving module, wherein the water inlet of the driving module is connected to the water outlet of the water storage tank, and the water outlet of the driving module is connected to the second water inlet of the water storage tank through the circulating return pipe, so as to form a water circulation loop between the water storage tank and the driving module; A cleaning module is connected to the water outlet of the driving module.

2. The cleaning system according to claim 1, wherein: A thermometer is provided inside the water tank for detecting the water temperature of the water tank; a return valve is provided on the circulating return water pipeline, and the return valve is arranged between the driving module and the water tank; the cleaning system also includes a controller, and the controller is used to control the opening and closing of the return valve.

3. The cleaning system according to claim 1, wherein: The cleaning system also includes: A material storage module is provided in the circulating return water pipeline, the water inlet end of the material storage module is connected to the water outlet end of the driving module, and the water outlet end of the material storage module is connected to the second water inlet end of the water storage tank. The material storage module is used to provide snow removal agent, cleaning agent and / or fire extinguishing agent.

4. The cleaning system according to claim 3, wherein: The storage module is a multi-bin storage tank, which includes a snow removal agent storage bin, a detergent storage bin, a fire extinguishing agent storage bin and a discharge bin. The discharge bin is arranged below the discharge end of the snow removal agent storage bin, the discharge end of the detergent storage bin and the discharge end of the fire extinguishing agent storage bin, and the water inlet and outlet of the storage module are arranged in the discharge bin.

5. The cleaning system according to claim 4, wherein: The unloading end of the snow removal agent storage bin, the unloading end of the cleaning agent storage bin, and the unloading end of the fire extinguishing agent storage bin are all provided with an unloading control device for controlling the unloading speed; The material unloading control device includes a material storage partition and a partition controller. The partition controller is connected to the movable part of the material storage partition and is used to control the opening of the material storage partition.

6. The cleaning system according to claim 4, wherein: The discharge ends of the snow removal agent storage bin, the cleaning agent storage bin, and the fire extinguishing agent storage bin are all provided with discharge weight detection devices for detecting the weight of the discharge entering the discharge bin.

7. The cleaning system according to claim 3, wherein: The storage module includes a snow removal agent storage tank, a detergent storage tank and a fire extinguishing agent storage tank. The water inlet end of the storage module includes the water inlet end of the snow removal agent storage tank, the water inlet end of the detergent storage tank and the water inlet end of the fire extinguishing agent storage tank. The water outlet end of the storage module includes the water outlet end of the snow removal agent storage tank, the water outlet end of the detergent storage tank and the water outlet end of the fire extinguishing agent storage tank.

8. The cleaning system according to claim 3, wherein: A partition and an agitator are also provided inside the water tank. The partition is provided on a side close to the first water inlet end of the water tank, and the agitator is provided between the second water inlet end of the water tank and the water outlet end of the water tank.

9. The cleaning system according to claim 3, wherein: A high water level density meter and a low water level density meter are arranged at intervals along the depth direction of the water storage tank. The high water level density meter and the low water level density meter are used to detect the water level and liquid density in the water storage tank.

10. The cleaning system according to any one of claims 1 to 9, characterized in that: At least one pipeline of the cleaning system is provided with a drain valve, and the drain valve is used to drain the liquid in the cleaning system when the cleaning system stops working; and / or, The cleaning system is further provided with a recovery module, the recovery module being connected to the area cleaned by the cleaning module and being used to recover liquid from the area cleaned by the cleaning module; and / or, The cleaning system further comprises a heating module, which is arranged between the water source module and the water storage tank and is used to heat the water inlet pipeline.

11. A photovoltaic system, characterized in that: The photovoltaic system comprises a photovoltaic module and a cleaning system according to any one of claims 1 to 10, wherein the cleaning system is used for cleaning photovoltaic components of the photovoltaic module.

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