CN115664344A - A device and method for automatic fault alarm of photovoltaic power station - Google Patents

Abstract

The invention discloses a device and a method for automatically alarming faults of a photovoltaic power station, belonging to the field, and comprising a support plate, wherein a photovoltaic plate is fixedly connected to the upper side surface of the support plate, a base is arranged below the support plate, the support plate is fixedly connected with the base through a support, and a cleaning mechanism is arranged on the outer side of the photovoltaic plate; the cleaning mechanism comprises sliding plates which are symmetrically distributed on the left end and the right end of the photovoltaic panel and are of L-shaped structures, sliding rails are symmetrically and fixedly connected to the left side and the right side of the lower side surface of the supporting plate, rolling wheels are arranged on the sliding plates corresponding to the inside of the sliding rails and fixedly connected with the sliding plates through rotating shafts, and a roller shaft is rotatably connected to the central positions of one side, corresponding to the vertical parts of the photovoltaic panel, of the two sliding plates. Can realize measuring the transmission loss that the pollutant brought on the glass through dust monitoring sensor in succession to calculate sunshine and reach solar energy component's reduction volume, when the reduction volume reaches alarm threshold value, dust monitoring sensor clears up the dust of mechanism to photovoltaic board surface with signal transmission to controller, starts through the controller.

Description

A device and method for automatic fault alarm of photovoltaic power station

technical field

The invention relates to the field, and more specifically, relates to a device and method for automatic fault alarm of a photovoltaic power station.

Background technique

Common faults in photovoltaic power stations include quality problems of components and inverters, line layout, dust, series and parallel losses, cable losses, etc. These factors will affect the power generation of photovoltaic power stations. Among them, dust is the number one influencing factor. The impact of dust on photovoltaic power stations mainly includes: by blocking the light reaching the components, it affects the power generation, affects the heat dissipation, and thus affects the conversion efficiency. Unevenness is conducive to the further accumulation of dust, while increasing the diffuse reflection of sunlight.

At this stage, the irregular cleaning is mainly done manually or by sprinklers. Due to the lack of an automatic alarm device, it is easy to cause a lot of dust on the surface of the photovoltaic panel and cannot be removed in time, which seriously affects the power generation efficiency.

The Chinese patent with the authorized announcement number CN214799414U discloses an automatic alarm device for abnormal photovoltaic power generation, and provides a technical solution. The photovoltaic panel absorbs solar energy and converts it into electric energy and enters the detection box through cables, and the detection component detects the strength of the current. , and send the detection information to the analysis component for analysis. When the amount of dust on the surface of the photovoltaic panel is too large, the solar energy absorbed by the photovoltaic panel becomes low, resulting in weak current. When the minimum threshold is reached, the analysis component passes the processor component And the signal transceiver sends out an alarm signal, and at the same time, the analysis component sends an alarm message to the central control room through the information transmission joint. Move to the location of the photovoltaic panel, pump out the water in the water tank through the water pump, and clean the dust on the surface of the photovoltaic panel through the water spray cleaning arm.

Although the above-mentioned patent can clean the dust on the surface of the photovoltaic panel by spraying water from the water pump, the dust contains a large amount of calcium and magnesium oxides. When the dust on the surface of the photovoltaic panel encounters rainfall, a small amount of calcium and magnesium ions will be dissolved. into the rain, and again attached to the surface of photovoltaic panels. Over time, a thick and hard calcium-magnesium scale will form on the surface of photovoltaic modules. Once the scale is formed, it is difficult to remove the scale only by spraying water from the water pump, which seriously affects the power generation effect of the photovoltaic module.

For this reason, a device and method for automatic fault alarm of a photovoltaic power station are proposed.

Contents of the invention

In view of the problems existing in the prior art, the purpose of the present invention is to provide a device and method for automatic fault alarm of photovoltaic power station, which can be realized.

In order to solve the above problems, the present invention adopts the following technical solutions.

A device and method for automatic fault alarm of a photovoltaic power station, including a support plate, a photovoltaic panel is fixedly connected to the side of the support plate, a base is provided under the support plate, and the support plate is fixedly connected to the base through a bracket , a cleaning mechanism is provided on the outside of the photovoltaic panel;

The cleaning mechanism includes an L-shaped sliding plate symmetrically distributed on the left and right ends of the photovoltaic panel. The left and right sides of the lower side of the support plate are symmetrically fixed with slide rails. The inside of the slide rail is provided with rollers corresponding to the slide plate. The rotating shaft is fixedly connected to the slide plate, and the center position of the corresponding side of the vertical part of the two slide plates and the photovoltaic panel is rotatably connected to a roller shaft, and the ring-shaped outer surface of the roll shaft is fixedly connected to a brush roller, and the slide plate on the right side is connected to the photovoltaic panel. The lower side of the parallel part of the plate is fixedly connected with a motor, the end of the output shaft of the motor is fixedly connected with a first gear, and the ring-shaped outer surface near the lower end of the roller shaft is provided with a second gear corresponding to the first gear fixed sleeve, and The first gear is connected to the second gear through a synchronous belt transmission, the upper end of the support plate is fixedly connected with a tooth plate, and the ring-shaped outer surface of the upper end of the roller shaft is fixedly sleeved with a third gear meshing with the tooth plate;

A dust monitoring sensor is fixedly connected to the upper sides of the two slide rails, and a storage box is fixedly connected to the middle of the lower side of the support plate. A controller is provided, and the dust monitoring sensor, the storage battery, the controller and the motor are electrically connected.

Further, the vertical part of the slide plate on the right side is fixedly connected to the middle box through the fixed plate of the L-shaped structure, and the center position of the left and right sides inside the middle box is rotatably connected to the reciprocating screw rod, and the screw transmission connection on the reciprocating screw rod There are pistons.

Further, the left end of the reciprocating screw rod passes through the middle box and is provided with a first connection groove, and the center position of the right side of the first gear is fixedly connected with a first connection shaft, and the first connection shaft is connected to the first connection shaft through a one-way bearing. A connecting groove is fixedly connected.

Further, the roller shaft has a hollow structure, and the right end of the roller shaft is rotatably connected with a rotary joint, and the rotary joint communicates with the lower end of the right side of the middle box through the infusion tube, and the annular outer surface of the roller shaft is equidistant along the axial direction. There are several overflow holes penetrating to the inner center of the roller shaft. A liquid tank is fixedly connected to the center of the upper end surface of the base. The lower end of the right side of the liquid tank communicates with the right end of the lower side of the middle tank through a liquid inlet pipe.

Further, the left side of the vertical part of the slide plate on the left side is fixedly connected with a volute through a fixed block, and the inner center of the volute is connected with an impeller through a second connecting shaft in rotation, and the left end of the roller shaft runs through the left slide plate A second connecting groove is provided, and the second connecting shaft is fixedly connected to the second connecting groove through a one-way bearing.

Further, the sides corresponding to each other of the vertical parts of the two sliding plates and the photovoltaic panels are fixedly connected with branch pipes symmetrically with respect to the roller shaft, and the annular outer surface of the volute is connected with a water pipe, and the water outlet of the water pipe is located at There is a three-way pipe in communication, and the two water outlets of the three-way pipe are respectively connected with two branch pipes. The annular outer surface of the branch pipe faces the side where the brush roller is in contact with the photovoltaic panel and is connected with several nozzles equidistantly in the axial direction. A shovel plate is fixedly connected to the symmetrical side of the annular outer surface of the branch pipe and the nozzle.

Further, a water tank is provided on the left side of the volute, the lower end of the water tank communicates with the center of the left side of the volute through a water inlet pipe, and the lower end of the water tank is symmetrically fixedly connected with a U-shaped support on the front and rear. The lower end surface of the support is fixedly connected with the base through the connecting plate.

Further, the upper end of the water tank is symmetrically provided with clamping grooves on the front, rear and both sides, and clamping plates with a triangular structure are clamped in the clamping grooves, and a filter net is fixedly connected between the two clamping plates.

Further, the lower end surface of the support plate is fixedly connected with several hemispherical protrusions at the longitudinal horizontal equidistant distance near the right side, and the upper side of the sliding plate on the right side parallel to the support plate corresponds to the vertical horizontal equidistant of the protrusions. Three sleeves are fixedly connected, and the inner bottom surfaces of the sleeves are elastically connected with elastic blocks through springs.

A method for a device for automatic fault alarm of a photovoltaic power station, characterized in that it includes the following steps:

S1: The upper side of the dust monitoring sensor is kept flush with the side of the photovoltaic panel. The dust monitoring sensor continuously measures the transmission loss caused by the pollutants on the glass, so as to calculate the reduction of sunlight reaching the solar module. When the reduction reaches the alarm threshold , the dust monitoring sensor transmits the signal to the controller, and the controller starts the cleaning mechanism to clean the dust on the surface of the photovoltaic panel;

S2: The initial state of the brush roller is located at the rearmost position of the slide rail. When the brush roller moves to the position of the dust monitoring sensor, the brush roller rotates continuously under the drive of the roller shaft, thereby wiping the dust attached to the surface of the photovoltaic panel;

S3: During the movement of the brush roller to the position of the dust monitoring sensor, the cleaning agent in the liquid tank is intermittently input into the interior of the roller shaft through the middle box, and then flows to the surface of the photovoltaic panel through the overflow hole on the roller shaft, thereby improving the anti-scale cleaning effect;

S4: The brush roller moves back after passing the position of the dust monitoring sensor. At this time, the cleaning agent stops supplying, and the clean water in the water tank is sucked into the branch pipe through the impeller, and then sprayed to the surface of the photovoltaic panel to wash the cleaning agent and dust to ensure The cleanliness of the photovoltaic panel surface.

Compared with the prior art, the present invention has the advantages of:

1. In this solution, a rotatable brush roller is arranged on the surface of the photovoltaic panel, and the surface of the photovoltaic panel can be wiped when the brush roller moves back and forth along the photovoltaic panel, thereby improving the dust cleaning effect.

2. In this scheme, the cleaning agent is intermittently input into the inside of the roller shaft during the process of the brush roller moving forward, and the cleaning agent flows to the surface of the photovoltaic panel through the overflow hole, and then cooperates with the rotating brush roller and shovel plate to improve the anti-scale cleaning effect.

3. In this scheme, during the process of resetting the brush roller backward, the clean water in the water tank is pumped into the two branch pipes through the impeller, and the clean water is sprayed to the contact position between the brush roller and the photovoltaic panel through the nozzles on the two branch pipes, so that the The dust, scale and cleaning agent attached to the surface of the photovoltaic panel and the brush roller are washed away to ensure the cleanliness of the photovoltaic panel.

Description of drawings

Fig. 1 is the perspective view schematic diagram of the overall structure of the present invention;

Fig. 2 is a three-dimensional schematic view of the overall structure of the present invention;

Fig. 3 is the explosion schematic diagram of branch pipe and slide plate of the present invention;

Fig. 4 is a half-sectional schematic diagram of Fig. 1 of the present invention;

Fig. 5 is an exploded schematic diagram of the second connecting shaft and the roller shaft of the present invention;

Fig. 6 is an exploded schematic diagram of the first connecting shaft and the reciprocating screw rod of the present invention;

FIG. 7 is an enlarged schematic diagram of A in FIG. 4 of the present invention;

FIG. 8 is an enlarged schematic diagram of B in FIG. 4 of the present invention.

Explanation of symbols in the figure:

1. Support board; 11. Photovoltaic panel; 12. Bracket; 13. Base; 14. Dust monitoring sensor; 15. Placement box; 16. Battery; 17. Controller; 18. Tooth plate; Rail; 22, roller; 23, motor; 24, first gear; 25, second gear; 26, roller shaft; 27, brush roller; 28, overflow hole; 29, third gear; 3, middle box; 31 , fixed plate; 32, first connecting shaft; 33, first connecting groove; 34, reciprocating screw rod; 35, piston; 36, infusion tube; 37, rotary joint; 38, liquid inlet pipe; 39, liquid tank; 4 , sleeve; 41, spring block; 42, bump; 5, water inlet pipe; 6, volute; 61, impeller; 62, second connecting shaft; 63, second connecting groove; 64, fixed block; 65, output Water pipe; 66, three-way pipe; 67, branch pipe; 68, nozzle; 69, shovel plate; 7, water tank; 71, slot; 72, clamp plate; 73, filter screen; 74, support; 75, connecting plate.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only part of the embodiments of the present invention, not all embodiments, based on The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1:

Please refer to Figures 1 to 8, a device and method for automatic fault alarm of a photovoltaic power station, including a support plate 1, a photovoltaic panel 11 is fixedly connected to the upper side of the support plate 1, and a base 13 is provided under the support plate 1. The panel 1 is fixedly connected to the base 13 through the bracket 12, and a cleaning mechanism is provided on the outside of the photovoltaic panel 11;

The cleaning mechanism includes an L-shaped sliding plate 2 symmetrically distributed at the left and right ends of the photovoltaic panel 11. The left and right sides of the lower side of the support plate 1 are symmetrically fixed with slide rails 21, and the inside of the slide rail 21 is provided with a roller 22 corresponding to the slide plate 2. The roller 22 passes through the The rotating shaft is fixedly connected with the slide plate 2, the two slide plates 2 and the center position of the vertical part of the photovoltaic panel 11 corresponding to each other are rotatably connected with a roller shaft 26, and the ring-shaped outer surface of the roller shaft 26 is fixedly connected with a brush roller 27, and the right slide plate 2 and The lower side of the parallel part of the photovoltaic panel 11 is fixedly connected with a motor 23, and the end of the output shaft of the motor 23 is fixedly connected with a first gear 24, and the ring-shaped outer surface near the lower end of the roller shaft 26 is provided with a second fixed sleeve corresponding to the first gear 24. gear 25, and the first gear 24 and the second gear 25 are connected by synchronous belt transmission, the upper end of the support plate 1 is fixedly connected with the tooth plate 18, and the ring outer surface of the upper end of the roller shaft 26 is fixedly sleeved with the third gear that meshes with the tooth plate 18. gear 29;

The upper sides of the two slide rails 21 are jointly fixedly connected with a dust monitoring sensor 14, and the middle position of the lower side of the support plate 1 is fixedly connected with a placement box 15. There is a controller 17, and the dust monitoring sensor 14, the storage battery 16, the controller 17 and the motor 23 are electrically connected.

By adopting the above technical scheme, the model of the dust monitoring sensor 14 is YGF-1, and the upper side of the dust monitoring sensor 14 is kept flush with the upper side of the photovoltaic panel 11, so that the upper side of the dust monitoring sensor 14 can be kept in line with the upper side of the photovoltaic panel 11. When the side reaches the same degree of dust accumulation, the dust monitoring sensor 14 measures and calculates the surface cleanliness, and the cleanliness drops from 100% to 0%. When the cleanliness drops to 20%, the dust monitoring sensor 14 transmits an alarm signal to the control panel. 17 and the central control room, the controller 17 first controls the output shaft of the motor 23 to rotate forward after receiving the signal, thereby driving the first gear 24 to rotate forward, and then driving the second gear 25 to rotate forward, so that the roller shaft 26 rotates forward together, thereby driving The third gear 29 rotates positively, because the roller 22 is fixedly connected with the slide plate 2 through the rotating shaft, and three rollers 22 in each slide rail 21 are provided with three longitudinal equidistants, which ensures the stability of the slide plate 2, and because the third gear 29 and the tooth plate 18 meshes, so that the roller shaft 26 can move forward along the photovoltaic panel 11, thereby driving the two slides 2 to move forward along the slide rail 21. During the forward movement of the slide plate 2, the brush roller 27 moves along with the roller shaft 26 Rotate to wipe the upper side of the photovoltaic panel 11. When the brush roller 27 passes through the dust monitoring sensor 14, the dust on the upper side of the dust monitoring sensor 14 is removed. At this time, the controller 17 controls the output shaft of the motor 23 to reverse, thereby Drive the slide plate 2 to slide backward to reset. During the reset process of the slide plate 2, the brush roller 27 is continuously reversed to wipe the upper side of the photovoltaic panel 11 again, thereby improving the cleaning effect of the photovoltaic panel 11. Rollers are installed inside the slide rail 21 22 to reduce the wear between the slide plate 2 and the slide rail 21. Through the combination of this alarm and cleaning method, the operation and maintenance personnel of the photovoltaic power station no longer need to clean up the thickness of the dust on the side of the photovoltaic panel 11 through experience, so that To avoid the loss of power generation efficiency and the waste of cleaning costs, the photovoltaic panel 11 is electrically connected to the battery 16, so that a part of the electric energy generated by the photovoltaic panel 11 is stored in the battery 16, so as to supply power to the entire circuit system and ensure the normal operation of the cleaning mechanism. After the computer terminal in the central control room receives the alarm signal, the staff can observe the alarm position through the camera at the alarm position. If the alarm signal continues to be transmitted to the central control room, it means that there are other faults in the alarm position. At this time , the staff can rush to the alarm position for maintenance to ensure the normal use of the photovoltaic panel 11. If the alarm signal is intermittently transmitted to the central control room, it means that the cleaning mechanism is operating normally, so the staff can not rush to the alarm position, saving labor costs .

As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 6 and Fig. 8, the vertical part of the right side slide plate 2 is fixedly connected with the middle box 3 through the fixed plate 31 of L-shaped structure, and the center position of the left and right sides inside the middle box 3 rotates A reciprocating screw rod 34 is connected, and a piston 35 is connected to the screw drive on the reciprocating screw rod 34. The left end of the reciprocating screw rod 34 runs through the middle box 3 and is provided with a first connecting groove 33. The center position of the right side of the first gear 24 is fixedly connected with a second A connecting shaft 32, the first connecting shaft 32 is fixedly connected with the first connecting groove 33 through a one-way bearing, the roller shaft 26 is a hollow structure, and the right end of the roller shaft 26 is rotatably connected with a swivel joint 37, and the swivel joint 37 is connected with the infusion tube 36 The lower end of the right side of the middle box 3 is connected, and the annular outer surface of the roller shaft 26 is provided with several overflow holes 28 penetrating to the inner center of the roller shaft 26 equidistantly along the axial direction, and the center position of the upper end surface of the base 13 is fixedly connected with a liquid tank 39 The lower end of the right side of the liquid tank 39 communicates with the right end of the lower side of the middle box 3 through the liquid inlet pipe 38 .

By adopting the above-mentioned technical scheme, since the first connecting shaft 32 is fixedly connected with the first connecting groove 33 at the left end of the reciprocating screw rod 34 through the one-way bearing, when the first gear 24 rotates forward, the first connecting shaft 32 and the first connecting groove The one-way bearing in 33 is in a stuck state, thereby driving the reciprocating screw rod 34 to rotate. Initially, the middle box 3 is filled with cleaning agent, and the piston 35 is located at the leftmost inside of the middle box 3, and the outer edge of the piston 35 is fixedly connected with a gasket , the piston 35 and the reciprocating screw rod 34 are fixedly connected with a sealing ring, so as to avoid the leakage of the cleaning agent during the movement of the piston 35. When the reciprocating screw rod 34 rotates, the piston 35 starts to slide to the right. During this process, the liquid enters The one-way valve in the pipe 38 is closed, and the one-way valve in the infusion tube 36 is opened, so that the cleaning agent in the middle box 3 is continuously input into the roller shaft 26 which is a hollow structure through the infusion tube 36, and the roller shaft 26 and the infusion tube 36 They are connected through a rotary joint 37, which can ensure that when the roller shaft 26 rotates, the cleaning agent can still be input into the inside of the roller shaft 26, and the cleaning agent entering the inside of the roller shaft 26 will flow out through the overflow hole 28, and the rotating brush roller 27 can be used. Deeply clean the scale and dust attached to the upper side of the photovoltaic panel 11 to improve the cleaning effect of the photovoltaic panel 11, and when the brush roller 27 passes the upper side of the dust monitoring sensor 14, it can also cooperate with the cleaning agent to adhere to the upper side of the dust monitoring sensor 14 Clean the dirt to ensure that the dust monitoring sensor 14 has good measurement accuracy. When the piston 35 moves to the far right inside the middle box 3, the piston 35 starts to move to the left. During this process, the one-way valve in the liquid inlet pipe 38 Open, the one-way valve in the transfusion pipe 36 closes, thereby the cleaning agent in the liquid tank 39 is constantly supplemented cleaning agent in the middle box 3 through the liquid inlet pipe 38, so that the intermittent replenishing cleaning agent is obtained in the roller shaft 26, which can To prevent waste caused by excessive delivery of cleaning agent, during the process of slide plate 2 sliding backward, the first gear 24 reverses, and at this time the first connecting shaft 32 and the one-way bearing in the first connecting groove 33 are in an active state. Thereby, the reciprocating screw rod 34 stops rotating, and then the supply of cleaning agent is stopped, so as to carry out subsequent water spray cleaning.

As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5 and Fig. 7, the left side of the vertical part of the left slide plate 2 is fixedly connected with the volute 6 through the fixed block 64, and the inner center of the volute 6 is connected through the second connection. The shaft 62 is rotatably connected to the impeller 61. The left end of the roller shaft 26 runs through the left slide plate 2 and has a second connection groove 63. The second connection shaft 62 is fixedly connected to the second connection groove 63 through a one-way bearing. The two slide plates 2 are connected to the photovoltaic The side corresponding to each other of the vertical part of the plate 11 is fixedly connected with the branch pipe 67 symmetrically with respect to the front and back of the roller shaft 26, the annular outer surface of the volute 6 is connected with the water delivery pipe 65, and the water outlet position of the water delivery pipe 65 is connected with the three-way pipe 66, and the three-way The two water outlets of the pipe 66 communicate with two branch pipes 67 respectively. The annular outer surface of the branch pipe 67 faces the side where the brush roller 27 is in contact with the photovoltaic panel 11. There are several nozzles 68 equidistant in the axial direction. The annular outer surface of the branch pipe 67 is connected to the The symmetrical side of the spray head 68 is fixedly connected with a shovel plate 69, the left side of the volute 6 is provided with a water tank 7, the lower end of the water tank 7 communicates with the center of the left side of the volute 6 through the water inlet pipe 5, and the lower end of the water tank 7 is fixedly connected front and back symmetrically There is a support 74 of U-shaped structure, the lower end surface of the support 74 is fixedly connected with the base 13 through the connecting plate 75, and the upper end of the water tank 7 is symmetrically provided with card slots 71 on the front, rear and both sides, and the card slots 71 are all clamped with triangular-shaped cards. plate 72, and a filter screen 73 is fixedly connected between the two clamping plates 72.

By adopting the above technical solution, during the forward movement of the slide plate 2, the roller shaft 26 rotates forward, and during this process, the second connecting shaft 62 and the one-way bearing in the second connecting groove 63 at the left end of the roller shaft 26 are in a state of active connection , so that the impeller 61 will not rotate. When the second connecting shaft 62 slides backward on the slide plate 2 to reset, the roller shaft 26 reverses. During this process, the second connecting shaft 62 and the second connecting groove 63 at the left end of the roller shaft 26 The one-way bearing inside is in a stuck connection state, so that the impeller 61 rotates, and the rotation of the impeller 61 generates centrifugal force, so that the clean water in the water tank 7 is sucked into the volute 6, and the clean water is thrown to the inside of the volute 6 under the centrifugal force The central position of the impeller 61 generates a low pressure under the action of centrifugal force, so that the cleaning in the volute 6 is continuously pumped into the three-way pipe 66 through the water delivery pipe 65 under the action of the external atmospheric pressure, and then through the two parts of the three-way pipe 66. The water outlets are respectively divided into two branch pipes 67, and the clear water entering the branch pipes 67 is sprayed to the contact position between the brush roller 27 and the photovoltaic panel 11 through the nozzle 68, so that the dust monitoring sensor 14 and the dust mixed with scale, dust and cleaning agent The upper side of the photovoltaic panel 11 is cleaned to ensure the cleanliness of the surface of the photovoltaic panel 11. At the same time, the brush roller 27 is also cleaned. The shovel plate 69 on the branch pipe 67 can be attached to the photovoltaic panel 11 and The stubborn scale and stains on the upper side of the dust monitoring sensor 14 are eradicated to further improve the cleaning effect. The rainwater can be collected through the water tank 7, saving water resources. The filter screen 73 on the upper surface of the water tank 7 can filter the rainwater to prevent dust from entering The inside of the water tank 7 blocks the water inlet pipe 5, and the left and right sides of the filter screen 73 are in a downwardly inclined structure, which can facilitate the natural falling of dust, prevent the filter screen 73 from accumulating too much dust and block the mesh holes, and connect with the clamping groove 71 by the clamping plate 72 It is convenient to disassemble the filter screen 73 for replacement later.

As shown in Fig. 2, Fig. 3 and Fig. 8, several hemispherical protrusions 42 are fixedly connected to the lower end surface of the support plate 1 near the right side in a vertical horizontal equidistant manner, and the upper part of the right sliding plate and the parallel part of the support plate 1 Three sleeves 4 are fixedly connected vertically and horizontally to the corresponding projections 42 on the sides, and the inner bottom surfaces of the sleeves 4 are elastically connected with spring blocks 41 .

By adopting the above technical solution, when the slide plate 2 moves back and forth along the slide rail 21, the bullet 41 will intermittently touch the bump 42, and when the bullet 41 contacts the bump 42, it will be squeezed by the bump 42 While retracting and compressing the spring in the sleeve 4, after the elastic block 41 leaves the protrusion 42, the elastic block 41 pops up under the rebound effect of the spring, thereby hitting the lower side of the support plate 1. Since the elastic block 41 is provided with three, Thus, one after another vibration force will be formed on the lower side of the support plate 1, and then the photovoltaic panel 11 on the support plate 1 will vibrate. Under the action of the vibration force, the attached dust and scale will be loosened, which is convenient for the cleaning of the brush roller 27 , and the cleaned dust and scale slide down to the ground faster under the action of vibration force, which greatly improves the cleaning effect.

A method for an automatic fault alarm device for a photovoltaic power station, comprising the following steps:

S1: The upper side of the dust monitoring sensor 14 is kept flush with the upper side of the photovoltaic panel 11. By continuously measuring the transmission loss caused by the pollutants on the glass, the reduction of sunlight reaching the solar module is calculated. When the reduction reaches the alarm threshold , the dust monitoring sensor 14 transmits the signal to the controller 17, and the controller 17 starts the cleaning mechanism to clean the dust on the surface of the photovoltaic panel 11;

S2: The initial state of the brush roller 27 is located at the rearmost position of the slide rail 21. When the brush roller 27 moves to the position of the dust monitoring sensor 14, the brush roller 27 rotates continuously under the drive of the roller shaft 26, so as to clean the dust attached to the surface of the photovoltaic panel 11. dust to wipe;

S3: During the movement of the brush roller 27 to the position of the dust monitoring sensor 14, the cleaning agent in the liquid tank 39 is intermittently input into the interior of the roller shaft 26 through the intermediate tank 3, and then flows to the photovoltaic through the overflow hole 28 on the roller shaft 26 plate 11 surface, thereby improving the effect of cleaning scale;

S4: The brush roller 27 moves back after the position of the dust monitoring sensor 14 is moved. At this time, the cleaning agent stops supplying, and the clean water in the water tank 7 is sucked into the branch pipe 67 through the impeller 61, and then sprayed to the surface of the photovoltaic panel 11 through the nozzle 68 to clean cleaning agent and dust to ensure the cleanliness of the surface of the photovoltaic panel 11.

The above description is only a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention and its improved concept to make equivalent replacements or changes shall fall within the scope of protection of the present invention.

Claims (10)

1. A device for automatic fault alarm of a photovoltaic power station, comprising a support plate (1), characterized in that: the upper side of the support plate (1) is fixedly connected with a photovoltaic panel (11), and the support plate (1) ) is provided with a base (13) below, the support plate (1) is fixedly connected to the base (13) through a bracket (12), and a cleaning mechanism is provided outside the photovoltaic panel (11); The cleaning mechanism includes an L-shaped sliding plate (2) symmetrically distributed on the left and right ends of the photovoltaic panel (11), and the left and right sides of the lower side of the support plate (1) are symmetrically fixedly connected with slide rails (21). The inside of the rail (21) is provided with a roller (22) corresponding to the slide plate (2), and the roller (22) is fixedly connected to the slide plate (2) through a rotating shaft. A roller shaft (26) is rotatably connected to the center position of one side corresponding to each other, and a brush roller (27) is fixedly connected to the annular outer surface of the roller shaft (26), and the slide plate (2) on the right side is parallel to the photovoltaic panel (11) The lower side of the part is fixedly connected with a motor (23), and the end of the output shaft of the motor (23) is fixedly connected with a first gear (24), and the annular outer surface near the lower end of the roller shaft (26) corresponds to the first gear. The gear (24) is fixedly sleeved with a second gear (25), and the first gear (24) is connected to the second gear (25) through a synchronous belt transmission, and the upper end of the support plate (1) is fixedly connected with a tooth plate ( 18), the ring-shaped outer surface of the upper end of the roller shaft (26) is fixedly sleeved with a third gear (29) meshing with the tooth plate (18); A dust monitoring sensor (14) is fixedly connected to the upper sides of the two slide rails (21), and a placement box (15) is fixedly connected to the lower side of the support plate (1). A storage battery (16) is provided on the rear side of the bottom surface, a controller (17) is provided on the front side of the inner bottom of the placement box (15), and the dust monitoring sensor (14), storage battery (16), controller (17) and motor (23) are electrically connected. 2. A device for automatic fault alarm of a photovoltaic power station according to claim 1, characterized in that: the vertical part of the slide plate (2) on the right side is fixedly connected by a fixed plate (31) of L-shaped structure There is a middle box (3), and a reciprocating screw rod (34) is rotatably connected to the center of the left and right sides inside the middle box (3), and a piston (35) is connected to the screw drive on the said reciprocating screw rod (34). 3. A device for automatic fault alarm of a photovoltaic power station according to claim 2, characterized in that: the left end of the reciprocating screw rod (34) runs through the middle box (3) and is provided with a first connecting groove (33 ), the center position of the right side of the first gear (24) is fixedly connected with a first connecting shaft (32), and the first connecting shaft (32) is fixedly connected with the first connecting groove (33) through a one-way bearing. 4. A device for automatic fault alarm of a photovoltaic power station according to claim 3, characterized in that: the roller shaft (26) is a hollow structure, and the right end of the roller shaft (26) is rotatably connected with a rotary joint ( 37), the rotary joint (37) communicates with the lower end of the right side of the middle box (3) through the infusion tube (36), and the annular outer surface of the roller shaft (26) is equidistant along the axial direction to provide several penetrating rollers The overflow hole (28) at the inner center of the shaft (26), the center of the upper end surface of the base (13) is fixedly connected with a liquid tank (39), and the lower end of the right side of the liquid tank (39) passes through the liquid inlet pipe ( 38) communicate with the right end of the lower side of the middle box (3). 5. A device for automatic fault alarm of a photovoltaic power station according to claim 1, characterized in that: the left side of the vertical part of the slide plate (2) on the left side is fixedly connected with a fixed block (64) The volute (6), the inner center of the volute (6) is rotatably connected with the impeller (61) through the second connecting shaft (62), the left end of the roller shaft (26) runs through the left slide plate (2) and has a The second connecting groove (63), the second connecting shaft (62) is fixedly connected to the second connecting groove (63) through a one-way bearing. 6. A device and method for automatic fault alarm of a photovoltaic power station according to claim 5, characterized in that: the two sliding plates (2) and the sides of the vertical part of the photovoltaic panel (11) correspond to each other A branch pipe (67) is fixedly connected to the front and back of the roller shaft (26) symmetrically, a water delivery pipe (65) is connected to the annular outer surface of the volute (6), and a three-way pipe is connected to the water outlet position of the water delivery pipe (65). (66), the two water outlets of the three-way pipe (66) communicate with the two branch pipes (67) respectively, and the annular outer side of the branch pipe (67) faces the brush roller (27) in contact with the photovoltaic panel (11) One side is equidistantly connected with several spray heads (68) along the axial direction, and a shovel plate (69) is fixedly connected to the symmetrical side of the annular outer surface of the branch pipe (67) and the spray heads (68). 7. A device for automatic fault alarm of a photovoltaic power station according to claim 6, characterized in that: a water tank (7) is provided on the left side of the volute (6), and the lower end surface of the water tank (7) The water inlet pipe (5) communicates with the center of the left side of the volute (6), and the lower end of the water tank (7) is fixedly connected with a support (74) with a U-shaped structure symmetrically front and back, and the support (74) is The end face is fixedly connected with the base (13) through the connecting plate (75). 8. A device for automatic fault alarm of a photovoltaic power station according to claim 7, characterized in that: the upper end of the water tank (7) is symmetrically provided with slots (71) on the front, back, and sides, and the slots A clamping plate (72) with a triangular structure is clamped inside (71), and a filter screen (73) is fixedly connected between the two clamping plates (72). 9. A device for automatic fault alarm of a photovoltaic power station according to claim 1, characterized in that: the lower end surface of the support plate (1) is fixedly connected with several hemispherical The bump (42) of the structure, the upper side of the sliding plate on the right side and the parallel part of the support plate (1) correspond to the bump (42) and are fixedly connected with three sleeves (4) in the longitudinal horizontal equidistant manner, and the sleeve ( 4) The inner bottom surfaces are elastically connected with bullet blocks (41) through springs. 10. The method applicable to a device for automatic fault alarm of a photovoltaic power station according to any one of claims 1-9, characterized in that: comprising the following steps: S1: The upper side of the dust monitoring sensor (14) is kept flush with the upper side of the photovoltaic panel (11), and by continuously measuring the transmission loss caused by the pollutants on the glass, the reduction in sunlight reaching the solar module is calculated. When the reduction When the alarm threshold is reached, the dust monitoring sensor (14) transmits the signal to the controller (17), and the controller (17) starts the cleaning mechanism to clean the dust on the surface of the photovoltaic panel (11); S2: The initial state of the brush roller (27) is located at the rearmost position of the slide rail (21). When the brush roller (27) moves to the position of the dust monitoring sensor (14), the brush roller (27) is driven by the roller shaft (26) Constantly rotating, thereby wiping the dust attached to the surface of the photovoltaic panel (11); S3: During the movement of the brush roller (27) to the position of the dust monitoring sensor (14), the cleaning agent in the liquid tank (39) is intermittently input into the roller shaft (26) through the middle box (3), and then passes through the roller shaft The overflow hole (28) on (26) flows to the surface of the photovoltaic panel (11), thereby improving the cleaning effect to scale; S4: The brush roller (27) moves back after the position of the dust monitoring sensor (14) is moved. At this time, the cleaning agent stops supplying, and the clean water in the water tank (7) is sucked into the branch pipe (67) through the impeller (61), and then The nozzle (68) sprays to the surface of the photovoltaic panel (11) to flush the cleaning agent and dust, thus ensuring the cleanliness of the surface of the photovoltaic panel (11).

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