CN109167565B - Dust removal system for photovoltaic photo-thermal device and control method thereof - Google Patents

Dust removal system for photovoltaic photo-thermal device and control method thereof Download PDF

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Publication number
CN109167565B
CN109167565B CN201810770238.0A CN201810770238A CN109167565B CN 109167565 B CN109167565 B CN 109167565B CN 201810770238 A CN201810770238 A CN 201810770238A CN 109167565 B CN109167565 B CN 109167565B
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photovoltaic
water
light intensity
sensing
fixed
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CN109167565A (en
Inventor
刘明昌
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Zhenmu Agricultural Equipment Anhui Co ltd
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Zhenmu Agricultural Equipment Anhui Co ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/10Cleaning arrangements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The invention discloses a dust removal system for a photovoltaic photo-thermal device, wherein the photovoltaic photo-thermal device is provided with at least one photovoltaic plate which is fixed in an inclined manner, the upper surface of each photovoltaic plate is provided with at least two cleaning branch pipes which are fixed horizontally, one cleaning branch pipe of each photovoltaic plate is fixed on the upper brim of the photovoltaic plate, the other cleaning branch pipes are arranged on the upper surface of the photovoltaic plate at equal intervals, each cleaning branch pipe is uniformly provided with a hole for spraying water to the upper surface of the photovoltaic plate, each cleaning branch pipe is communicated with a main water supply pipe, the water inlet end of the main water supply pipe is connected with the outlet of a three-way electromagnetic valve, one inlet of the three-way electromagnetic valve is connected with a water pump, and the water pump pumps water from a water source to the. The dust removal system can automatically recognize the dust condition on the surface of the photovoltaic panel, intelligently selects proper time for dust removal, is stable and reliable in work, saves energy, protects environment and ensures the working efficiency of the photovoltaic photo-thermal device.

Description

Dust removal system for photovoltaic photo-thermal device and control method thereof
Technical Field
The invention relates to the field of photovoltaics, in particular to a cleaning system for a photovoltaic panel.
Background
Photovoltaic power generation or light and heat utilization project, now can see everywhere in our country, but photovoltaic cell board or light and heat absorption equipment expose outside throughout the year, in addition the pollution of environment, the dust flies upward, bird excrement and urine etc. in addition, cover the surface in solar cell board and heat collector, have seriously influenced photovoltaic power generation and light and heat equipment endothermic efficiency.
At present, the photovoltaic panel cleaning work mostly needs manual water gun flushing, and the cleaning work is time-consuming and labor-consuming, and the cleaning effect is limited.
Disclosure of Invention
The invention aims to solve the technical problem of realizing a dust removal system capable of automatically cleaning a photovoltaic panel.
In order to achieve the purpose, the invention adopts the technical scheme that: a dust pelletizing system for photovoltaic light and heat device, photovoltaic light and heat device are equipped with the fixed photovoltaic board of an at least slope, every the upper surface of photovoltaic board is equipped with two piece at least level fixed clean branch pipes, every one of them clean branch pipe of photovoltaic board is fixed at the last eaves of photovoltaic board, and the equidistant upper surface of arranging at the photovoltaic board of other clean branch pipes, every evenly be provided with the hole to the surface jet water on the photovoltaic board on the clean branch pipe, every clean branch pipe all is responsible for the intercommunication with supplying water, the export of tee bend solenoid valve is connected to the end of intaking that supplies water is responsible for, one of them access connection water pump of tee bend solenoid valve, the water pump is responsible for the pump water from the water source to supplying water.
And the other inlet of the three-way electromagnetic valve is connected with an air pump.
The system is provided with a controller, the controller is provided with a communication module, the communication module is communicated with the far-end server, and the controller outputs driving signals to the three-way electromagnetic valve, the water pump and the air pump.
The system is equipped with laying dust response mechanism, laying dust response mechanism fixes in near the open air of photovoltaic board, laying dust response mechanism includes the glass the same with photovoltaic board inclination, glass lower fixed surface has the light source, glass upper surface is fixed with the light intensity inductor that the response light source sent illumination intensity, the eaves is fixed with the clean branch pipe that a level set up on the glass, and this clean branch pipe intercommunication is responsible for supplying water, light intensity inductor output sensing signal to controller, controller output drive signal to light source.
At least two groups of light sources and light intensity sensors which are matched with the glass are arranged on the glass.
And a rainfall sensor is fixed on the glass and outputs a sensing signal to the controller.
The light intensity sensor is characterized in that the sensing end of the light intensity sensor faces the light source downwards in an inclined mode, a circle of light shielding plates are arranged around the sensing end, the controller is provided with an environment light intensity sensor for sensing environment light intensity, and the environment light intensity sensor outputs sensing signals to the controller.
Based on the control method of the dust removal system, the control method comprises the following steps:
when the dust removal function is started, the water pump is driven to start working;
after the water pump works for a set time, the water pump is closed, and the air pump is started;
and after the air pump works for a set time, closing the air pump.
And if the light intensity is higher than the set value, the dust removal function is not started, and if the light intensity is lower than or equal to the set value, the dust removal function is started.
When the rainfall sensor acquires that the rain is raining at present, starting the air pump for setting time at intervals of the set time, and after the rainfall sensor acquires a signal of rain stop, starting the air pump for setting time; if it is raining, the timing for turning on the light source is suspended.
The dust removal system can automatically recognize the dust condition on the surface of the photovoltaic panel, intelligently selects proper time for dust removal, is stable and reliable in work, saves energy, protects environment and ensures the working efficiency of the photovoltaic photo-thermal device.
Drawings
The following is a brief description of the contents of each figure in the description of the present invention:
FIG. 1 is a schematic view of a dust removal system for a photovoltaic photothermal device;
the labels in the above figures are: 1. a photovoltaic panel; 2. cleaning the branch pipe; 3. a water supply main pipe; 4. a three-way electromagnetic valve; 5. a water pump; 6. a water source; 7. an air pump; 8. glass; 9. a light intensity sensor; 10. a light source.
Detailed Description
Photovoltaic light and heat device is equipped with at least one slope fixed photovoltaic board 1, be equipped with polylith photovoltaic board 1 usually, every photovoltaic board 1 is improved level and is provided with many clean branch pipes 2, the eaves on photovoltaic board 1 is fixed to one of them clean branch pipe 2 level, then other clean branch pipe 2 evenly distributed are on photovoltaic board 1, and only level is fixed, evenly distributed, clean branch pipe 2 pastes almost on photovoltaic board 1, evenly be equipped with the hole that is used for water spray (gas) along every clean branch pipe 2, the hole sets up under clean branch pipe 2 or the side below, to the surface injection water on photovoltaic board 1
One end of each cleaning branch pipe 2 is communicated with the water supply main pipe 3, the other end of each cleaning branch pipe is sealed, the water inlet end of the water supply main pipe 3 is connected with an outlet of the three-way electromagnetic valve 4, one inlet of the three-way electromagnetic valve 4 is connected with the water pump 5, the water pump 5 is connected with the water source 6, water is pumped out of the water source 6, the water source 6 can be a water storage tank, a hot water tank, tap water and the like, hot water can be sprayed onto the photovoltaic panel 1 through the water pump 5, high pressure is generated, and dust on the photovoltaic panel.
Another access connection air pump 7 of three solenoid valve 4, air pump 7 can be responsible for 3 and clean branch pipe 2 interior gas blowing to supplying water, high-pressure gas has two effects, the first ponding of being responsible for 3 and clean branch pipe 2 of getting rid of the water supply, the water pipe blocks up when can avoiding using winter, the second can blow to photovoltaic board 1 surface, blow off the ponding on photovoltaic board 1 surface fast, utilize high-pressure aqueous vapor also can further improve the dust and clear away the effect, can avoid (night in winter) photovoltaic board 1 surface icing.
The system is provided with a dust accumulation sensing mechanism, as shown in fig. 1, the dust accumulation sensing mechanism is provided with glass 8, the glass 8 is fixed outdoors near the photovoltaic panel 1, the inclination angle of each photovoltaic panel 1 is generally the same, the dust accumulation sensing mechanism is provided with glass 8 with the same inclination angle as the photovoltaic panel 1, the glass 8 is a transparent glass plate structure and is used for sensing the dust accumulation condition of the environment, a light source 10 is fixed on the lower surface of the glass 8, the light source 10 is preferably an led light source 10, a light intensity sensor 9 for sensing the illumination intensity emitted by the light source 10 is fixed on the upper surface of the glass 8, the sensing end of the light intensity sensor 9 is obliquely and downwards opposite to the light source 10, a circle of light shielding plates are arranged around the sensing end to avoid the influence of ambient light, the light intensity sensor 9 outputs a sensing signal to a controller, the controller outputs a driving signal to the light source 10, and the illumination intensity emitted by the light source 10 is fixed, so that the height of. The light source 10 and the light intensity inductor 9 which are matched with each other on the upper and lower sides of the glass 8 are at least provided with two groups, and through the redundancy design, the influence of special conditions such as bird flying and the like on the dust test can be avoided.
Glass 8 goes up the eaves and is fixed with clean branch pipe 2 that a level set up, and this clean branch pipe 2 intercommunication water supply is responsible for 3, can clean glass 8 simultaneously when clean photovoltaic board 1 like this, is fixed with the rainfall sensor on glass 8, and the controller still is equipped with the ambient light intensity sensor of response ambient light intensity, and rainfall sensor and ambient light intensity sensor output sensing signal to controller. The rainfall sensor can sense whether it rains currently, misjudgment of the light intensity sensor 9 in the raining process can be avoided, the environment light intensity sensor is used for sensing environment light intensity, and inaccuracy of testing of the light intensity sensor 9 in a strong light environment can be avoided.
Based on the control method of the dust removal system, the control method comprises the following steps:
when the dust removal function is started, the three-way electromagnetic valve 4 is controlled to be only communicated with the water pump 5, and then the water pump 5 is driven to start working;
after the water pump 5 works for a set time, the water pump 5 is closed, the three-way electromagnetic valve 4 is controlled to be only communicated with the air pump 7, and then the air pump 7 is opened;
after the air pump 7 works for a set time, the air pump 7 is closed.
The water is flushed firstly, and then the air is blown, so that the dust removal effect can be greatly improved under the condition of saving water.
In order to automatically start the dust removal function, the time from the last time of starting the light source 10 reaches a set value, and the current ambient light intensity is lower than the set value, the first time of starting the light source 10 is started, the light source 10 is started for the set time, the light intensity sensor 9 obtains the illumination intensity of the light source 10 penetrating through the glass 8 in the starting process of the light source 10, if the illumination intensity is higher than the set value, the dust removal function is not started, and if the illumination intensity is lower than or equal to the set value, the dust removal function is started.
When the rainfall sensor acquires that the current raining is going on, the air pump 7 is started for a set time at intervals of a set time, so that the effect of efficiently removing dust can be achieved by using rainwater and even a small amount of rainwater, in addition, after the rainfall sensor acquires a signal of rain stop, the air pump 7 is started for a set time, once air blowing after the rain stop can avoid that the surface water accumulation of the photovoltaic panel 1 affects power generation, and the accuracy of the test of the light intensity sensor 9 on the surface of the glass 8 can be ensured; if it is raining, the timing for turning on the light source 10 is suspended, and the sensing error of the light intensity sensor 9 can be avoided.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.

Claims (8)

1. A dust pelletizing system for photovoltaic light and heat device, photovoltaic light and heat device are equipped with the fixed photovoltaic board of at least slope, its characterized in that: the upper surface of each photovoltaic plate is provided with at least two horizontally fixed cleaning branch pipes, one cleaning branch pipe of each photovoltaic plate is fixed on the upper eave of the photovoltaic plate, other cleaning branch pipes are arranged on the upper surface of the photovoltaic plate at equal intervals, holes for spraying water to the upper surface of the photovoltaic plate are uniformly formed in each cleaning branch pipe, each cleaning branch pipe is communicated with a main water supply pipe, the water inlet end of the main water supply pipe is connected with the outlet of a three-way electromagnetic valve, one inlet of the three-way electromagnetic valve is connected with a water pump, and the water pump pumps water from a water source to the main water supply pipe;
the system is provided with a dust accumulation sensing mechanism, the dust accumulation sensing mechanism is fixed outdoors near a photovoltaic panel, the dust accumulation sensing mechanism comprises glass with the same inclination angle as the photovoltaic panel, a light source is fixed on the lower surface of the glass, a light intensity sensor for sensing the illumination intensity emitted by the light source is fixed on the upper surface of the glass, a horizontally arranged cleaning branch pipe is fixed on the upper brim of the glass, the cleaning branch pipe is communicated with a water supply main pipe, the light intensity sensor outputs a sensing signal to a controller, and the controller outputs a driving signal to the light source;
the light intensity sensor is characterized in that the sensing end of the light intensity sensor faces the light source downwards in an inclined mode, a circle of light shielding plates are arranged around the sensing end, the controller is provided with an environment light intensity sensor for sensing environment light intensity, and the environment light intensity sensor outputs sensing signals to the controller.
2. The dust pelletizing system for photovoltaic photo-thermal device of claim 1, characterized in that: and the other inlet of the three-way electromagnetic valve is connected with an air pump.
3. The dust pelletizing system for photovoltaic photo-thermal device of claim 2, characterized in that: the system is provided with a controller, the controller is provided with a communication module, the communication module is communicated with the far-end server, and the controller outputs driving signals to the three-way electromagnetic valve, the water pump and the air pump.
4. The dust pelletizing system for photovoltaic photo-thermal device of claim 1, characterized in that: at least two groups of light sources and light intensity sensors which are matched with the glass are arranged on the glass.
5. The dust pelletizing system for photovoltaic photo-thermal device of claim 4, characterized in that: and a rainfall sensor is fixed on the glass and outputs a sensing signal to the controller.
6. The control method of the dust removal system according to any one of claims 1 to 5, wherein the control method comprises:
when the dust removal function is started, the water pump is driven to start working;
after the water pump works for a set time, the water pump is closed, and the air pump is started;
and after the air pump works for a set time, closing the air pump.
7. The control method according to claim 6, characterized in that: and if the light intensity is higher than the set value, the dust removal function is not started, and if the light intensity is lower than or equal to the set value, the dust removal function is started.
8. The control method according to claim 7, characterized in that: when the rainfall sensor acquires that the rain is raining at present, starting the air pump for setting time at intervals of the set time, and after the rainfall sensor acquires a signal of rain stop, starting the air pump for setting time; if it is raining, the timing for turning on the light source is suspended.
CN201810770238.0A 2018-07-13 2018-07-13 Dust removal system for photovoltaic photo-thermal device and control method thereof Active CN109167565B (en)

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Application Number Priority Date Filing Date Title
CN201810770238.0A CN109167565B (en) 2018-07-13 2018-07-13 Dust removal system for photovoltaic photo-thermal device and control method thereof

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Application Number Priority Date Filing Date Title
CN201810770238.0A CN109167565B (en) 2018-07-13 2018-07-13 Dust removal system for photovoltaic photo-thermal device and control method thereof

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CN109167565B true CN109167565B (en) 2020-07-28

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201338000Y (en) * 2008-12-12 2009-11-04 广东金刚玻璃科技股份有限公司 Surface cleaning device of solar energy photovoltaic assembly
CN102280498A (en) * 2011-07-04 2011-12-14 上海电力学院 Intelligent cleaning system for solar photovoltaic photo-thermal panel
CN106100563A (en) * 2016-08-15 2016-11-09 宁波康宁节能环保工程有限公司 A kind of solar panels dust arrester
CN106788207A (en) * 2016-12-31 2017-05-31 国网山东省电力公司潍坊市寒亭区供电公司 Photovoltaic grillage with cleaning protection function
CN207166444U (en) * 2017-10-09 2018-03-30 江苏荣辉电力设备制造有限公司 Automatically cleaning photovoltaic power generation plate and photovoltaic generating system
CN207254811U (en) * 2017-07-13 2018-04-20 中国大唐集团科学技术研究院有限公司 Water-saving photovoltaic module cleaning systems
CN207354113U (en) * 2017-07-11 2018-05-11 安徽中能众诚新能源科技有限公司 A kind of water surface photovoltaic flotation gear with cleaning function

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201338000Y (en) * 2008-12-12 2009-11-04 广东金刚玻璃科技股份有限公司 Surface cleaning device of solar energy photovoltaic assembly
CN102280498A (en) * 2011-07-04 2011-12-14 上海电力学院 Intelligent cleaning system for solar photovoltaic photo-thermal panel
CN106100563A (en) * 2016-08-15 2016-11-09 宁波康宁节能环保工程有限公司 A kind of solar panels dust arrester
CN106788207A (en) * 2016-12-31 2017-05-31 国网山东省电力公司潍坊市寒亭区供电公司 Photovoltaic grillage with cleaning protection function
CN207354113U (en) * 2017-07-11 2018-05-11 安徽中能众诚新能源科技有限公司 A kind of water surface photovoltaic flotation gear with cleaning function
CN207254811U (en) * 2017-07-13 2018-04-20 中国大唐集团科学技术研究院有限公司 Water-saving photovoltaic module cleaning systems
CN207166444U (en) * 2017-10-09 2018-03-30 江苏荣辉电力设备制造有限公司 Automatically cleaning photovoltaic power generation plate and photovoltaic generating system

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