TWM579065U - Hydrodynamic photovoltaic cell plate single head washing brush - Google Patents

Abstract

This creation is about a single-head cleaning device for power photovoltaic panels, including a hydraulic prime mover (micro-impact turbine), a reduction gear, a disc brush, a working rod and a water inlet pipe, a connection bracket, and so on. The clear water flows through the micro-impact turbine to perform work and then flows to the surface of the battery board. The micro-impact turbine drives the disc brush to rotate and clean. The operator can operate by holding the working lever and pushing the cleaning equipment along the surface of the battery panel, which has good maneuverability and high efficiency. This machine uses a high-pressure water pump to provide water (power source). It is driven by clean water with a working pressure of 4000KPa. The speed of the disc brush is between 700 r / min and 900 r / min. The water consumption can be adjusted. It can be applied to various photovoltaic power generation cleaning, and has been widely used in the growing field of cleaning of decentralized (small) photovoltaic power generation panels.

Description

Single-head cleaning brush for hydrodynamic photovoltaic panel

This creation relates to a single-head cleaning brush for solar photovoltaic panels, which belongs to a device for cleaning photovoltaic power generation panels; its core hydraulic prime mover is a miniature impact turbine in the field of hydraulic turbines, which belongs to the fields of fluid mechanics and impeller machinery.

Photovoltaic power generation panels are installed in the form of an array in the open air. Dirt and dust reduce the photoelectric conversion efficiency and reduce the generation of electricity. Therefore, solar panels need to be cleaned regularly.

The currently used cleaning methods mainly include manual manual cleaning, manual tool cleaning, and mechanized cleaning vehicle cleaning; other methods include installing fixed network management spraying on photovoltaic panels, and placing crawling cleaning equipment robots on photovoltaic panels. For reasons such as effectiveness, efficiency, reliability, and cost, applications have not yet become widespread.

The mechanized cleaning truck has high cleaning efficiency and has good application in large-scale ground-level photovoltaic power stations where the site is level. It requires flat terrain, which is not suitable for sites such as hillsides, greenhouses, water surfaces and distributed rooftop photovoltaic power plants that are becoming increasingly popular.

Manual pure manual cleaning is to flush the water with a water pipe, and then use the simplest hand tools such as a rag, mop, etc. This is also the most commonly used method in most places in China. This method is simple to operate and easiest to implement. It is suitable for any photovoltaic power generation occasion and requires almost no equipment investment. However, it is obvious that the cleaning effect of this method is average, the efficiency is very low, the labor intensity of the workers is high, and the water consumption rate is also large.

Manually cleaning photovoltaic panels is done using palm-type equipment. Its equipment generally relies on power sources such as motors, small gasoline engines, and water power to drive the brushes to complete cleaning. Because the cleaning of battery panels generally requires water, equipment using electric motors and gasoline engines has extra facilities compared to systems using only water as the power source, resulting in a complex system and hidden safety risks. Therefore, electric or gasoline powered palms PV cleaning equipment is not widely used.

Water-driven palm-type photovoltaic cleaning equipment, which uses water for work and water flushing, does not require an additional power source, and has good application prospects; the power machinery that converts the energy of water flow into rotating mechanical energy, that is, turbine machinery in fluid machinery For example, water turbines have a long history of application. Impact water turbines are a type of water turbines. They are driven by high-pressure water jets with kinetic energy by means of a water-conducting mechanism. A kind of hydraulic prime mover for mechanical energy, whose water energy utilization efficiency generally exceeds 90%, see reference 1. Impact turbines are suitable for high pressure and small flow applications, and they are also suitable for miniaturization and miniaturization. Therefore, most of the hydrodynamic photovoltaic cleaning equipment use a micro-impact turbine (water bucket turbine) structure as the power source.

The calculation formula of the main parameters of the micro-impact turbine (water bucket turbine) is as follows.

Photovoltaic cleaning equipment using a micro-impact turbine structure as a power source has mature applications on the market, such as the iSolar series of photovoltaic cleaning brushes from Germany Alfred Kärcher GmbH Co.KG (www.karcher.com) and Germany Cleantecs GmBH (www.sola-tecs.com) Solar-Tecs photovoltaic cleaning roller brushes, both products are driven by high-pressure water, although the brush shape is different, one is a disc type (Kaichi) One is cylindrical (Clinde), but the structure of its core power source is the same as that of the miniature impact turbine: high-pressure water is sprayed from the nozzle to impact the blades (water buckets) on the runner to make it perform work; The iSolar series photovoltaic cleaning brush uses a nozzle, and its working pressure is about 10000KPa ~ 12000KPa (the data comes from actual testing). The working pressure of Clinder's Solar-Tecs photovoltaic cleaning roller brush is 10000KPa ~ 12000KPa (the data comes from the product manual) See Reference II.

One of the advantages of the above two devices is the simple and compact structure, but its disadvantages and disadvantages include: relatively high cost and unsatisfactory runner life. They need to be equipped with high-cost high-pressure water pumps and high-pressure resistant pipelines; the water quality is also high. Under high pressure, the impurities in the water are too high, just like doped with abrasives, which will cause serious abrasion to the equipment. The inlet pipe of the equipment generally requires a professional front-end screening program. The core parts of the runner are in poor working conditions, because the blades need to withstand high-pressure water with a pressure exceeding 10 MPa and a flow usually exceeding 10 liters / minute. Long-term impact, so the life of the runner may not be ideal, and it needs to be replaced from time to time.

Based on this, it is necessary to develop new technical solutions, improve the structure of existing hydropower sources, and develop a photovoltaic cleaning device that operates at relatively low pressure, which can reduce costs and increase life and has extremely high commercial value.

references:

I. Zheng Yuan, Chen Dexin, <Water Turbine> China Water Resources and Hydropower Press; January 1, 2011.

Second, download the product manual of German Clinde: http://www.cleantecs.de/en/downloads.html Download of product manual of Kärcher: http://www.kaercher-schmitz.de/pdf2014/6.368- 454.0_01.pdf

The main purpose of this creation is to provide a long-life, low-cost, single-head cleaning device for hydropower solar panels using clean water with a pressure of less than 5000KPa.

In order to achieve the above object, the present invention provides a single-head cleaning brush for a hydrodynamic photovoltaic cell panel, which includes a micro-impact turbine, a reduction gear, a disc brush, a working rod and a A water inlet pipe, a connecting bracket, etc., wherein the micro-impact turbine is connected to the reduction gear, the disc brush is arranged in the reduction gear to form a synchronizing relationship, and the connecting bracket communicates the working rod with the micro-impact type For a water turbine, the inlet pipe is connected to the working rod, using clean high-pressure water under pressure as a working medium, and the micro-impact water turbine (micro bucket water turbine) driven by the high-pressure water is used to perform work, and the disc brush is driven to rotate by the reduction transmission device It is characterized in that high-pressure water is sprayed onto blades (water buckets) of a runner through at least one nozzle on the micro-impact turbine, and drives the runner to perform work.

1‧‧‧Mini Impact Turbine

2‧‧‧ Reduction Transmission

3‧‧‧ disc brush

4‧‧‧Working lever

41‧‧‧Inlet pipe

5‧‧‧Connecting bracket

6‧‧‧ shell

7‧‧‧ Nozzle

8‧‧‧ runner

9‧‧‧ blade

FIG. 1 is a front elevational sectional view of an embodiment of the creation.

Figure 2 is a three-dimensional appearance of the creation.

Figure 3 is an exploded view of this creation.

Figure 4 is a schematic diagram of the structure of the miniature impact turbine of this creation.

The following is an example to illustrate the possible implementation of this creation, but it is not intended to limit the scope of protection of this creation.

The hydrodynamic photovoltaic single-head cleaning equipment assembled with reference to FIGS. 1 to 4 includes a micro-impact turbine 1, a reduction gear transmission 2, a disc brush 3, a working rod 4, a water inlet pipe 41, and a connection bracket 5. Wherein, the micro-impact hydraulic turbine 1 is connected to the reduction gearing device 2, the disc brush 3 is provided in the reduction gearing device 2 to form a simultaneous relationship, and the connecting bracket 5 communicates the working rod 4 and the micro-impact hydraulic turbine, respectively. 1. The water inlet pipe 41 is connected to the working rod 4.

In more detail, the pressurized clean high-pressure water is used as the working medium, and the micro-impact water turbine 1 (micro bucket water turbine) driven by the high-pressure water is used to perform work, and the disc brush 3 is driven to rotate by the reduction transmission device 2; It is characterized in that the working pressure of the high-pressure water is between 2000KPa and 5000KPa; the high-pressure water passes through at least one nozzle 7 on the micro-impact turbine 1 and is sprayed onto the blade 9 (water bucket) of a runner 8 to drive the runner 8 Rotate to do work. In this embodiment, the number of the at least one nozzle 7 is four.

In more detail, the micro-impact turbine 1 as a power source is composed of 4 nozzles 7 and a runner 8 which are fixedly installed. The runner 8 has 23 blades 9 (water buckets). The advantages of the nozzle 7 and the plurality of nozzles 7 are that the stress points of the plurality of blades 9 are dispersed, the working pressure is reduced, the force of the runner 8 is symmetrical, and the dynamic balance is good; the assembly method is: the miniature impact turbine 1 The reduction gear transmission 2 is installed below, the disc brush 3 is fixedly mounted on the output shaft of the reduction gear transmission 2, the micro-impact turbine 1 and the reduction gear transmission 2 are covered by a casing 6, which also bears The connection bracket 5 is connected to the reduction gearing 2 to drain the water after the work is performed. The working rod 4 and the water inlet pipe 41 are installed on the connection bracket 5; the working process is as follows: The high-pressure water flows through the inlet pipe 41 through the working rod 4 and the connection bracket 5 to the micro-impact turbine 1 and is sprayed to the 23 blades 9 of the runner 8 through the 4 nozzles 7 evenly distributed. (Water bucket), rotate the runner 8 to do work, and then reduce the speed 2 drives the movable means 3 rotates the disk brush work, the water flows to the panel surface and then rinsing is completed.

Wherein, the reduction transmission device 2 may be an open type, or a first- or second-stage spur gear reduction transmission with a sealed gear box structure (sealed type) may be adopted. The material of the runner 8 can be made of any suitable material, such as metal and non-metal, because of its complicated shape and difficult processing. The preferred manufacturing method is injection molding using nylon 66 with a mold.

It is worth mentioning that by adjusting the inlet pressure (adjusting the working pressure of the high-pressure water pump), the flow rate can be adjusted to change the rotation speed of the runner 8 of the micro-impact turbine 1, and then adjust The rotation speed of the disc brush 3. When in use, adjust the direction and angle of the working rod 4 and push the cleaning equipment on the inclined surface at a suitable angle for cleaning. Furthermore, by adjusting the pressure regulating valve on the water pump, the water flow rate and the disk brush 3 can be adjusted. Speed, when the pressure gauge pointer is at 4000KPa, the cleaning brush is in the optimal working condition.

Provide a range of working conditions here: To make the speed of the disc brush 3 reach more than 800r / min, after calculation, the output power is about 150 watts, the pressure of high pressure water is between 2000KPa ~ 5000KPa; its flow rate is 0.075 × 10 -3 m 3 / s ~ 0.15 × 10 -3 m 3 / s; after actual measurement and repeated checking, the following results are obtained. Parameters of the runner 8 of the miniature impact turbine 1: the diameter of the runner 8 is between 114 mm and 118 mm, and preferably, the diameter of the runner 8 is 116 mm. Working pressure: Working pressure is between 2000KPa ~ 5000KPa. Preferably, the rated working pressure is 4000KPa; working flow rate: The flow rate of the high-pressure water flowing through the miniature impact turbine 1 is between 0.075 × 10 -3 m 3 / s and 0.15 × 10 -3 m 3 / s. , Its rated working flow is 0.125 × 10 -3 m 3 / s. Rotation speed of the disc brush 3: The rotation speed of the disc brush 3 is between 700 r / min and 900 r / min. Preferably, the rated operating speed of the disc brush 3 is 800 r / min.

In this embodiment, the working conditions of the single-head cleaning brush for the hydrodynamic photovoltaic cell panel are: normal temperature, working medium: fresh water, flow rate 0.125 × 10 -3 m 3 / s, and water inlet pressure 4000KPa. The output results are shown in the attached drawings. 6 The main parameters of the cleaning equipment are shown in the output table: the maximum power is close to 160 watts, the idling speed can reach 850r / min, and the rated speed is 800r / min. At this time, the measured power is 150w, the pressure drop is 4000KPa, and the water energy utilization efficiency is as high as 90.6%. From this, it can be seen that the creative design parameters are reasonable, the running performance is good, and the actual measurement results are in line with expectations.

In summary, this creative single-head cleaning brush for hydrodynamic photovoltaic panels is an original device. At present, no inquiry has been made about the use of low-pressure water, similar to the structure and size of this handheld photovoltaic single-head cleaning device. Literature or applications, so this creation provides the first time Water driven photovoltaic cleaning equipment between 2000KPa ~ 5000KPa.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not limited. Although the present invention has been described in detail with reference to the preferred embodiment, those skilled in the art should understand that Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions of the creation should all be covered by the scope of the claims of the creation.

Claims (15)

The utility model relates to a single-head cleaning brush for a hydrodynamic photovoltaic cell panel, which includes a micro-impact water turbine, a reduction gear transmission, a disc brush, a working rod and a water inlet pipe, a connection bracket, etc., wherein the micro-impact water turbine is connected In the deceleration transmission device, the disc brush is disposed on the deceleration transmission device in a synchronizing relationship, the connection bracket communicates the working rod with the micro-impact hydraulic turbine, and the water inlet pipe is connected to the working rod. Water is the working medium. The high-pressure water-driven micro-impact turbine (mini-turbine-type turbine) performs work, and the disc brush is driven to rotate by the reduction transmission device. It is characterized in that high-pressure water passes through at least one of the micro-impact turbine The nozzle sprays on a blade (water bucket) of a runner, and drives the runner to perform work. The single-head cleaning brush for a hydrodynamic photovoltaic panel according to claim 1, wherein the working pressure of the high-pressure water is between 2000 KPa and 5000 KPa. The single-head cleaning brush for a hydrodynamic photovoltaic panel according to claim 2, wherein the rated working pressure of the high-pressure water is 4000KPa. The single-head cleaning brush for a hydrodynamic photovoltaic cell panel according to claim 1, wherein the flow of high-pressure water flowing through the micro-impact turbine is between 0.075 × 10-3m3 / s and 0.15 × 10-3m3 / s. The single-head cleaning brush for a hydrodynamic photovoltaic panel according to claim 4, wherein the rated working flow rate is 0.125 × 10-3m3 / s. The single-head cleaning brush for a hydrodynamic photovoltaic cell panel according to claim 1, wherein the rotating speed of the disc brush is between 700 r / min and 900 r / min. The single-head cleaning brush for a hydrodynamic photovoltaic panel according to claim 6, wherein the disk brush has a rated operating speed of 800 r / min. The single-head cleaning brush for a hydrodynamic photovoltaic cell panel according to claim 1, wherein the diameter of the runner of the miniature impact turbine is between 114 mm and 118 mm. The single-head cleaning brush for a hydrodynamic photovoltaic panel according to claim 8, wherein the diameter of the runner is 116 mm. The single-head cleaning brush for a hydrodynamic photovoltaic cell panel according to claim 1, wherein the structure of the speed reduction transmission device may be an open type or a sealed type. The single-head cleaning brush for a hydrodynamic photovoltaic cell panel according to claim 10, wherein the structure of the reduction gear transmission comprises a primary or secondary spur gear reduction gear transmission in a sealed gear box. The single-head cleaning brush for a hydrodynamic photovoltaic panel according to claim 1, wherein the material of the runner can be made of any suitable material, such as metal and non-metal. The single-head cleaning brush for a hydrodynamic photovoltaic panel according to claim 12, wherein the material of the runner is nylon 66. The single-head cleaning brush for a hydrodynamic photovoltaic panel according to claim 12, wherein the number of blades of the runner is 23. The single-head cleaning brush for a hydrodynamic photovoltaic cell panel according to claim 1, wherein the number of the at least one nozzle is four.