Intelligent centralized control cleaning system of photovoltaic power station

Abstract

The invention relates to the technical field of photovoltaic modules, in particular to a photovoltaic power station intelligent centralized control cleaning system which comprises a secondary air storage tank, an air injection pipe assembly and a distribution device, an air injection branch pipe is provided with an air injection inlet and an air injection nozzle, and the distribution device comprises an air distribution valve and a hose. The hose is sleeved with a limiting arm which can be opened or folded to limit the hose in the hose, the air distribution valve is provided with a plurality of air distribution outlets, and an air pipe is connected between each air distribution outlet and the air injection inlet; at least one secondary gas storage tank, a distribution device and a gas ejector pipe assembly are arranged on each set of photovoltaic power generation system, and a plurality of sets of photovoltaic power generation systems are provided with one primary gas storage tank. Therefore, the purpose of carrying out centralized intelligent cleaning control on all photovoltaic power generation systems in the photovoltaic power station in various forms such as synchronization, real-time and point-to-point modes can be achieved on the structure of the system device, meanwhile, the maintenance and cleaning time of the whole power station can be greatly shortened through the overall simultaneous cleaning mode, and the cleaning cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic components, and in particular to an intelligent centralized control and cleaning system for a photovoltaic power station. Background Art

[0002] Photovoltaic cells are the core components of energy conversion for solar power generation. As a key component of photovoltaic power generation, they play a decisive role in the efficiency of solar power conversion. Factors that affect the efficiency of solar power conversion are not only the conversion efficiency of the photovoltaic cell module itself, but also the impact of the external environment on the photovoltaic cell module. The cleanliness of the light-receiving surface of the photovoltaic cell module is one of the very important factors. When the surface of the photovoltaic cell module is clean, the photovoltaic cell module receives light energy best, and its conversion efficiency will be improved; when the light-receiving surface of the photovoltaic cell module is covered with dust, the light transmittance of the photovoltaic cell module surface decreases, and the light energy it receives decreases, resulting in a decrease in power generation conversion efficiency. Therefore, surface cleaning of photovoltaic cell modules has always been an important task in the operation of photovoltaic power stations.

[0003] At present, there are two main ways to clean the surface of photovoltaic power station battery components. One is manual cleaning, which is done manually by mopping and rinsing with water. However, manual cleaning is costly and time-consuming. The other is automatic cleaning with a cleaning robot, which mainly moves on the photovoltaic battery component panel. The cleaning robot is equipped with a rotating brush. While the cleaning robot is moving, the rotating brush sweeps away the dust on the surface of the photovoltaic battery panel component. Some cleaning robots also have a water spraying function. When the robot is cleaning, due to the high cost of the robot, the working area covered by a robot is large, and the cleaning time depends on the working speed of the robot. The improvement of the robot cleaning effect is inversely related to its speed improvement. In addition, when the robot uses a brush for cleaning, the brush wears and needs to be replaced regularly; when water is used for cleaning, water becomes a cleaning consumable, which is costly. At the same time, in a large number of arid areas with abundant light resources, water resources are relatively scarce, and there is also a problem of difficulty in obtaining water. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem of high cost caused by manual cleaning or robot cleaning when cleaning the surface of photovoltaic power station battery components in the prior art, an intelligent centralized control cleaning system for photovoltaic power stations is now provided.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: an intelligent centralized control cleaning system for a photovoltaic power station, comprising a primary gas storage tank for storing a cleaning medium and a plurality of cleaning subsystems, wherein the plurality of cleaning subsystems correspond to the number of photovoltaic power generation systems in the photovoltaic power station, and each cleaning subsystem is used to clean the photovoltaic surface of the photovoltaic power generation system to which it corresponds, and each cleaning subsystem comprises:

[0006] There is at least one secondary gas storage tank, which is connected to the gas outlet of the primary gas storage tank;

[0007] There is at least one jet pipe assembly, which is slidably arranged above the photovoltaic power generation system, each jet pipe assembly comprises a plurality of jet branch pipes fixed side by side and not connected to each other, and each jet branch pipe is provided with a jet inlet jet nozzle connected to its inner cavity;

[0008] A distribution device, at least one in number, is located between the secondary gas storage tank and the jet pipe assembly, including an air distribution valve fixed on the jet pipe assembly and a hose connected between the secondary gas storage tank and the air distribution valve, the hose is externally sleeved with a limit arm that can be opened or folded to confine the hose inside, the air distribution valve has a plurality of air distribution outlets, and an air pipe is connected between each air distribution outlet and the jet inlet on the jet branch pipe.

[0009] Furthermore, the limiting arm includes a plurality of hinged support arms, and the end of the support arm located at the front end of the plurality of support arms is hinged to the air dividing valve bracket for installing the air dividing valve.

[0010] Furthermore, one end of the hose is connected to the air separation valve, and the other end is connected to an air intake valve, and the air intake valve is close to the end of the support arm located at the rear end.

[0011] Furthermore, there are two groups of limit arms, and the two groups are symmetrically distributed along the movement direction of the air jet assembly.

[0012] Furthermore, there are at least two jet inlets on the same jet branch pipe.

[0013] Furthermore, a rotating movable joint is arranged between the support arm and the air dividing valve bracket, and the rotating movable joint includes two support ears hinged to the support arm and a connecting part connecting the two support ears, and the connecting part is provided with a joint that connects the air dividing valve with the hose in the support arm.

[0014] Furthermore, the cleaning system also includes a photovoltaic cleaning machine bracket, which includes a positioning bracket for installing an intake valve seat and a plurality of slide rails cross-arranged with the positioning bracket for sliding of the jet pipe assembly.

[0015] Furthermore, a sliding mechanism is provided between the slide rail and the corresponding jet pipe assembly, and the sliding mechanism includes a sliding base provided on the jet pipe assembly, a motor installed on the sliding base, and a driving wheel connected to the output end of the motor, and the driving wheel cooperates with the slide rail.

[0016] Furthermore, the air outlet of the air nozzle is in a flat shape.

[0017] Furthermore, the air jet nozzle is curved as a whole, and two adjacent air jet nozzles on the same air jet branch pipe have different directions so that the cleaning medium sprayed from the inside of the two nozzles acts on the front and rear positions of the photovoltaic surface of the power generation system.

[0018] Beneficial effects of the present invention:

[0019] 1. The present invention adopts a method of arranging at least one primary gas storage tank, a distribution device and an air jet pipe assembly on each photovoltaic power generation system, and multiple photovoltaic power generation systems are equipped with one primary gas storage tank, so that the system device structure can achieve the purpose of realizing centralized intelligent cleaning control in various forms such as synchronization, real-time, point-to-point, etc. for all photovoltaic power generation systems in the photovoltaic power station. At the same time, the overall simultaneous cleaning mode can greatly shorten the maintenance and cleaning time of the entire power station and reduce the cleaning cost.

[0020] 2. The cleaning device provided by the present invention uses air medium as the cleaning medium. Compared with water or other media, air medium is available everywhere and has no cost, thereby greatly reducing the cleaning cost.

[0021] 3. The new jet cleaning device provided by the present invention has a jet nozzle in the form of a narrow and long gap. After the compressed air is ejected, the whole is in the form of multiple invisible sheet curtains, covering a wide area. In addition, the gas ejected between adjacent jet nozzles is at a certain angle, so that when the gas acts on the surface of the photovoltaic module, it is arranged front and back, realizing a multi-pass blowing and cleaning effect, and greatly improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the coordination between a single photovoltaic power generation system and a cleaning system;

[0025] Figure 3 It is a three-dimensional schematic diagram of the cleaning system corresponding to a single photovoltaic power generation system;

[0026] Figure 4 It is a top view of the cleaning system corresponding to a single photovoltaic power generation system;

[0027] Figure 5 It is a side view of the cleaning system corresponding to a single photovoltaic power generation system;

[0028] Figure 6 It is a schematic diagram of the coordination between the air distribution valve and the jet pipe assembly;

[0029] Figure 7 It is a three-dimensional schematic diagram of the jet branch pipe;

[0030] Figure 8 It is a three-dimensional schematic diagram of the air jet;

[0031] Fig. 9 is a cross-sectional view of the air jet;

[0032] Fig.10 It is the flow diagram of the airflow ejected from the jet nozzle;

[0033] In the figure:

[0034] 1. Photovoltaic power station; 101. Photovoltaic power generation system;

[0035] 2. Air compressor;

[0036] 3. Primary gas storage tank;

[0037] 4. Jet pipe assembly; 401. Jet branch pipe; 402. Jet inlet; 403. Jet nozzle; 4031. Jet outlet;

[0038] 5. Distribution device; 501. Air distribution valve bracket; 502. Air distribution valve; 5021. Air distribution outlet; 503. Limiting arm; 5031. Support arm; 504. Inlet valve; 505. Rotary movable joint; 5051. Support ear; 5052. Connecting part; 5053. Joint;

[0039] 6. Photovoltaic cleaning machine bracket; 601. Positioning bracket; 602. Slide rail; 603. Fixed seat;

[0040] 7. Sliding mechanism; 701. Sliding base; 702. Motor; 703. Driving wheel;

[0041] 8. Secondary gas storage tank. DETAILED DESCRIPTION

[0042] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0043] like Figure 1As shown, a photovoltaic power station intelligent centralized control cleaning system includes a primary air storage tank for storing cleaning medium and multiple cleaning subsystems. The multiple cleaning subsystems correspond to the number of photovoltaic power generation systems 101 in the photovoltaic power station 1, and each cleaning subsystem is used to clean the photovoltaic surface of the corresponding photovoltaic power generation system 101. The cleaning medium in this embodiment is compressed air. The air compressor 2 generates compressed air and stores it in the primary air storage tank 3. The primary air storage tank 3 is relatively large in size;

[0044] Each cleaning subsystem is provided with at least one secondary gas storage tank 8, at least one jet pipe assembly 4 and at least one distribution device 5 according to the extension length of the photovoltaic power generation system 101. The secondary gas storage tank 8 is connected to the gas outlet of the primary gas storage tank 3. The distribution device 5 is located between the secondary gas storage tank 8 and the jet pipe assembly 4 and is used to transport the cleaning medium in the secondary gas storage tank 8 to the jet pipe assembly 4. Figure 2 As shown, in this embodiment, each cleaning subsystem is equipped with a secondary air storage tank 8, two jet pipe assemblies 4 and two distribution devices 5.

[0045] The jet pipe assembly 4 is slidably arranged above the photovoltaic power generation system 101, and performs all-round jet cleaning of the photovoltaic power generation system 101 by sliding up and down. Each jet pipe assembly 4 includes a plurality of jet branch pipes 401 fixed side by side and not connected to each other, two adjacent jet branch pipes 401 are independent of each other and welded and fixed, and each jet branch pipe 401 is provided with a jet inlet 402 and a jet nozzle 403 connected to its inner cavity. Since each photovoltaic power generation system 101 has a very long extension length, if a single jet pipe covering the photovoltaic power generation system 101 is used for jet cleaning, when the high-pressure airflow flows along the pipeline, firstly, the long-distance transportation itself will cause a pressure drop, resulting in insufficient air pressure at the rear end of the transportation and poor spray cleaning effect. Secondly, the high-pressure airflow will also cause a pressure drop when passing through each jet nozzle 403, which will further lead to insufficient air pressure at the rear end. In this embodiment, the jet pipe assembly 4 is divided into a plurality of single-chamber jet branch pipes 401, and the length of each single-chamber jet branch pipe 401 is shorter than that of the jet pipe assembly 4, and the number of jet nozzles 403 is less, which can reduce the pressure drop and improve the spray cleaning effect.

[0046] like Figure 3-Figure 5 As shown, each distribution device 5 includes an air distribution valve 502 fixed on the injection pipe assembly 4 and a hose connected between the secondary air storage tank 8 and the air distribution valve 502. The volume of the secondary air storage tank 8 is much smaller than that of the primary air storage tank 3.

[0047] like Figure 3-Figure 5As shown, the outer sleeve of the hose is provided with a limit arm 503 which can be opened or folded to confine the hose inside it. The limit arm 503 is a hollow tube body, and the hose is inserted inside it, which can play a role in fixing the hose; when the jet pipe assembly 4 moves downward, the limit arm 503 is driven to open and the hose is synchronously extended. When the jet pipe moves upward, the limit arm 503 is driven to fold and the hose is synchronously bent. The setting of the limit arm 503 can keep the hose tidy and tidy during the up and down movement of the jet pipe assembly 4, avoiding adjacent hoses from being entangled or the hose being hooked on the bracket of the photovoltaic power generation system 101, causing damage and breakage.

[0048] The air separation valve 502 has a plurality of air separation outlets 5021, and an air pipe is connected between each air separation outlet 5021 and the jet inlet 402 on the jet branch pipe 401. The air separation valve 502 synchronously delivers compressed air to each jet branch pipe 401 through the air pipe to reduce pressure drop.

[0049] The air compressor 2 generates compressed air and stores it in the primary air tank 3. The primary air tank 3 delivers the compressed air to the secondary air tank 8 corresponding to each photovoltaic power generation system 101 as needed. The secondary air tank 8 delivers the compressed air to each jet branch pipe 401 through the air distribution valve 502 according to work needs, and releases the compressed air through each jet nozzle 403 on the jet branch pipe 401 to form a high-pressure airflow on the surface of the photovoltaic component to blow away the dirt and dust thereon; this arrangement enables each photovoltaic power generation system 101 in the power station to have its own independent compressed air blowing and cleaning device, which can be free from space and time constraints and can receive instructions from the superior control system at any time to perform cleaning operations.

[0050] During the process, the jet pipe assembly 4 can move up and down to clean the photovoltaic power generation system 101 in all directions. At this time, the limit arm 503 can be opened or folded synchronously to keep the internal hose connected to the air distribution valve 502, and the limit arm 503 can protect and limit the hose to avoid entanglement or hooking damage between adjacent hoses caused by exposure.

[0051] In some examples, such as Figure 3-Figure 5 As shown, the limiting arm 503 includes a plurality of hinged support arms 5031, and the number of the support arms 5031 may be but is not limited to two, three or four. In the present embodiment, the number of the support arms 5031 is two, and the end of the support arm 5031 located at the front end among the plurality of support arms 5031 is hinged to the air dividing valve bracket 501 for installing the air dividing valve 502.

[0052] In some examples, such as Figure 3-Figure 5As shown, one end of the hose is connected to the air dividing valve 502, and the other end is connected to the air intake valve 504. The air intake valve 504 is close to the end of the support arm 5031 located at the rear end. The air intake valve 504 is used to control the on-off of the air path inside the corresponding hose. The air intake valve 504 can be but is not limited to a solenoid valve.

[0053] In some examples, such as Figure 3-Figure 5 As shown, there are two groups of limit arms 503, and the two are symmetrically distributed along the movement direction of the jet pipe assembly 4. The support arms 5031 located at the front end of each group of limit arms 503 are hinged to the intake valve 504 seat, and the support arms 5031 located at the rear end are connected to the intake valve 504. In this embodiment, the two groups of limit arms 503 form a parallelogram structure, which can be deformed during the movement of the jet pipe assembly 4.

[0054] In some examples, there are at least two jet inlets 402 on the same jet branch pipe 401. The present embodiment does not limit the number. When there are two jet inlets 402, the jet inlets 402 are respectively disposed at one quarter of the two ends of the jet branch pipe 401 to achieve uniform jetting.

[0055] In some examples, such as Figure 6 As shown, a rotating movable joint 505 is arranged between the support arm 5031 and the air dividing valve bracket 501, and the rotating movable joint 505 includes two support ears 5051 hinged to the support arm 5031 and a connecting portion 5052 connecting the two support ears 5051, and the end of the support arm 5031 is located between the two support ears 5051, and the connecting portion 5052 is connected to the air dividing valve bracket 501 and is provided with a joint 5053 that connects the air dividing valve 502 with the hose in the support arm 5031.

[0056] In some examples, such as Figure 3 and Figure 5 As shown, the cleaning system also includes a photovoltaic cleaning machine bracket 6, which includes a positioning bracket 601 for installing the air intake valve 504 seat and a plurality of slide rails 602 cross-arranged with the positioning bracket 601 for sliding the jet pipe assembly 4. A fixed seat 603 is fixed on the positioning bracket 601, and the fixed seat 603 is hinged to the limit arm 503. The number of slide rails 602 can be but is not limited to two, three or four, etc.

[0057] In some examples, such as Figure 5As shown, a sliding mechanism 7 is arranged between the slide rail 602 and the corresponding jet pipe assembly 4, and the sliding mechanism 7 includes a sliding base 701 arranged on the jet pipe assembly 4, a motor 702 installed on the sliding base 701, and a driving wheel 703 connected to the output end of the motor 702, the driving wheel 703 cooperates with the slide rail 602, and a plurality of anti-skid grooves distributed at intervals are arranged on the slide rail 602 to avoid slipping between the driving wheel 703 and the slide rail 602; the motor 702 is started, and the motor 702 drives the driving wheel 703 to rotate on the slide rail 602, thereby driving the sliding base 701 to move, and then driving the jet pipe assembly 4 to move up and down.

[0058] In some examples, such as Figure 8 and Fig. 9 As shown, the jet port 4031 of the jet nozzle 403 is in a flat shape. After the high-pressure airflow entering the jet nozzle 403 passes through the flat jet port 4031, an invisible high-pressure airflow curtain is formed in the outer area of ​​the jet nozzle 403. The high-pressure airflow curtain covers a wide and far area. The high-pressure airflow curtain acts on the surface of an object to blow away the dirt and dust on the object, thereby achieving a blowing and cleaning effect.

[0059] In some examples, such as Figure 8-Figure 10 As shown, the air nozzle 403 is curved as a whole, and the directions of two adjacent air nozzles 403 on the same air jet branch pipe 401 are different, and the air jets 4031 of the air nozzles 403 with the same direction are arranged on the same straight line, and the directions of the airflows ejected by the air nozzles 403 with different directions are different. When the high-pressure airflow acts on the surface of the photovoltaic module, it is arranged front to back, realizing a multi-channel (synchronous) blowing and washing effect, thereby greatly improving the cleaning effect.

[0060] Working principle:

[0061] The air compressor 2 generates compressed air and stores it in the primary air tank 3. The primary air tank 3 delivers the compressed air to the secondary air tank 8 corresponding to each photovoltaic power generation system 101 as needed. The secondary air tank 8 delivers the compressed air to each jet branch pipe 401 through the air inlet valve 504 and the air distribution valve 502 according to work needs. The compressed air is released through a plurality of jet nozzles 403 with flat-mouthed jet ports 4031 on the jet branch pipe 401, forming an invisible high-pressure airflow curtain on the surface of the photovoltaic module to clean the dirt and dust thereon. At the same time, the jet nozzle 403 has two directions, and the high-pressure airflow is arranged front and back when acting on the surface of the photovoltaic module, thereby realizing a multi-pass blowing and washing effect.

[0062] During the process, the jet pipe assembly 4 can move up and down to clean the photovoltaic power generation system 101 in all directions. At this time, the limit arm 503 can be opened or folded synchronously to keep the internal hose connected to the air distribution valve 502, and the limit arm 503 can protect and limit the hose to avoid entanglement or hooking damage between adjacent hoses caused by exposure.

[0063] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An intelligent centralized control cleaning system for a photovoltaic power station, characterized in that: It comprises a primary gas storage tank (3) for storing a cleaning medium and a plurality of cleaning subsystems, wherein the plurality of cleaning subsystems corresponds to the number of the plurality of photovoltaic power generation systems (101) in the photovoltaic power station (1), and each cleaning subsystem is used to clean the photovoltaic surface of the photovoltaic power generation system (101) to which it corresponds, and each cleaning subsystem comprises: There is at least one secondary gas storage tank (8), which is connected to the gas outlet of the primary gas storage tank (3); There is at least one jet pipe assembly (4) which is slidably arranged above the photovoltaic power generation system (101), each jet pipe assembly (4) comprising a plurality of jet branch pipes (401) which are fixed side by side and are not connected to each other, and each jet branch pipe (401) is provided with a jet inlet (402) and a jet nozzle (403) which are connected to its inner cavity; A distribution device (5), at least one in number, is located between the secondary gas storage tank (8) and the jet pipe assembly (4), comprising a gas distribution valve (502) fixed on the jet pipe assembly (4) and a hose connected between the secondary gas storage tank (8) and the gas distribution valve (502), wherein the hose is provided with a limit arm (503) on the outside thereof which can be opened or folded to limit the hose inside the hose, and the gas distribution valve (502) has a plurality of gas distribution outlets (5021), and an air pipe is connected between each gas distribution outlet (5021) and the jet inlet (402) on the jet branch pipe (401).

2. The photovoltaic power station intelligent centralized control cleaning system according to claim 1 is characterized by: The limiting arm (503) comprises a plurality of support arms (5031) that are hingedly arranged, and the end of the support arm (5031) located at the front end of the plurality of support arms (5031) is hingedly connected to an air separation valve bracket (501) for mounting the air separation valve (502).

3. The photovoltaic power station intelligent centralized control cleaning system according to claim 1 is characterized by: One end of the hose is connected to the air distribution valve (502), and the other end is connected to an air intake valve (504), and the air intake valve (504) is close to the end of the support arm (5031) located at the rear end.

4. The photovoltaic power station intelligent centralized control cleaning system according to claim 3 is characterized by: There are two groups of limit arms (503), and the two groups are symmetrically distributed along the movement direction of the jet pipe assembly (4).

5. The photovoltaic power station intelligent centralized control cleaning system according to claim 1 is characterized by: There are at least two jet inlets (402) on the same jet branch pipe (401).

6. The photovoltaic power station intelligent centralized control cleaning system according to claim 3 is characterized by: A rotating movable joint (505) is provided between the support arm (5031) and the air separation valve bracket (501), and the rotating movable joint (505) includes two support ears (5051) hinged to the support arm (5031) and a connecting portion (5052) connecting the two support ears (5051), and the connecting portion (5052) is provided with a joint (5053) for connecting the air separation valve (502) with a hose in the support arm (5031).

7. The photovoltaic power station intelligent centralized control cleaning system according to claim 3 is characterized by: The cleaning system further comprises a photovoltaic cleaning machine support (6), wherein the photovoltaic cleaning machine support (6) comprises a positioning support (601) for installing an air inlet valve (504) and a plurality of slide rails (602) arranged crosswise with the positioning support (601) for sliding the air injection pipe assembly (4).

8. The photovoltaic power station intelligent centralized control cleaning system according to claim 7 is characterized by: A sliding mechanism (7) is provided between the slide rail (602) and the corresponding air jet pipe assembly (4), the sliding mechanism (7) comprising a sliding base (701) provided on the air jet pipe assembly (4), a motor (702) mounted on the sliding base (701), and a driving wheel (703) connected to the output end of the motor (702), the driving wheel (703) cooperating with the slide rail (602).

9. The photovoltaic power station intelligent centralized control cleaning system according to claim 1, characterized in that: The air jet opening (4031) of the air jet nozzle (403) is in a flat opening shape.

10. The photovoltaic power station intelligent centralized control cleaning system according to claim 1, characterized in that: The air jet nozzle (403) is curved as a whole, and two adjacent air jet nozzles (403) on the same air jet branch pipe (401) have different directions so that the cleaning medium ejected from the inside of the two nozzles acts on the front and rear positions of the photovoltaic surface of the power generation system (101).

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