CN115301634A - Electrostatic dust removal device and method for heliostat - Google Patents
Electrostatic dust removal device and method for heliostat Download PDFInfo
- Publication number
- CN115301634A CN115301634A CN202210852902.2A CN202210852902A CN115301634A CN 115301634 A CN115301634 A CN 115301634A CN 202210852902 A CN202210852902 A CN 202210852902A CN 115301634 A CN115301634 A CN 115301634A
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- Prior art keywords
- heliostat
- electrodes
- screen electrode
- insulating frame
- electrode
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- 239000000428 dust Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002245 particle Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229920006267 polyester film Polymers 0.000 claims description 7
- 239000012717 electrostatic precipitator Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000004720 dielectrophoresis Methods 0.000 claims description 3
- 230000005686 electrostatic field Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000002310 reflectometry Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B6/00—Cleaning by electrostatic means
Landscapes
- Electrostatic Separation (AREA)
Abstract
The invention discloses an electrostatic dust collection device and method for a heliostat, wherein the device comprises an insulating frame, upper screen electrodes which are arranged in parallel are fixed on the upper surface of the insulating frame, lower screen electrodes which are arranged in parallel are fixed on the lower surface of the insulating frame, and the upper screen electrodes and the lower screen electrodes are arranged in a 90-degree manner; the upper screen electrode and the lower screen electrode are respectively connected with a high-voltage alternating-current power supply which changes reversely. The electrostatic dust removal device and the method disclosed by the invention do not consume water resources; the safety is high, and the energy consumption is extremely low; only when the heliostat needs to be cleaned, the device is placed on the surface of the heliostat for dust removal without reducing the reflectivity of the heliostat; the invention has low implementation cost and is suitable for the existing light and heat power plants.
Description
Technical Field
The invention relates to the technical field of heliostat dust removal, in particular to an electrostatic dust removal device and method for a heliostat.
Background
Due to the large floor space of the tower type photothermal power station, the tower type photothermal power station is mostly built in the land and in geographical areas where sunlight is sufficient, such as deserts and gobi deserts, in order to reduce the land cost. Although the abundant sunlight in these areas is beneficial to solar power generation, these areas also tend to float a great amount of mineral dust, which gradually accumulates on the surface of the solar panel and reduces its efficiency, for example, in the weather of heavy wind, the mirror surface dust can reduce the reflectivity by 1% on average one day.
Currently, heliostats are generally cleaned by using a clean water washing or scouring method, however, in a severe desert environment, manual operation is difficult, labor cost is uncertain, and the cost of delivering water to a power plant is high.
In the existing electrostatic dust removal device, an electrode is embedded into the surface of a heliostat, and electrostatic force generated by parallel electrodes drives dust particles to move towards one direction so as to achieve the purpose of dust removal. Due to the shading effect of the electrodes, the reflectivity of the heliostats can be reduced, and meanwhile, the initial cost is huge, the electrodes need to be embedded into each heliostat, and the heliostats are not suitable for the built large-scale photo-thermal power plant.
Disclosure of Invention
In order to solve the technical problems, the invention provides an electrostatic dust removal device and method for a heliostat, which can effectively remove dust without reducing the reflectivity of the heliostat, have low implementation cost and are suitable for the existing optical thermal power plant.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an electrostatic dust removal device for a heliostat comprises an insulating frame, wherein upper screen electrodes which are arranged in parallel are fixed on the upper surface of the insulating frame, lower screen electrodes which are arranged in parallel are fixed on the lower surface of the insulating frame, and the upper screen electrodes and the lower screen electrodes are arranged in an angle of 90 degrees; the upper screen electrode and the lower screen electrode are respectively connected with a high-voltage alternating-current power supply which changes reversely.
In the scheme, the upper screen electrode and the lower screen electrode are made of copper wires, and polyester films are coated on the surfaces of the upper screen electrode and the lower screen electrode.
Preferably, the diameter of the copper wire is 1mm, and the thickness of the polyester film is 0.15mm.
In the above scheme, the distance between two adjacent upper screen electrodes is 5mm, the distance between two adjacent lower screen electrodes is 5mm, and the gap between the upper screen electrode and the lower screen electrode is 5mm.
In the scheme, the frequency of the low-frequency high-voltage alternating voltage is 1-10 Hz, and the voltage is 9kV.
According to the electrostatic dust removal method for the heliostat, the electrostatic dust removal device for the heliostat is adopted, during cleaning, the insulating frame is placed on the surface of the heliostat, the lower screen electrode is made to cling to the lens of the heliostat, a high-voltage alternating-current power supply is switched on, and the insulating frame is driven by an external driving device to slide left and right on the surface of the heliostat; when a low-frequency high-voltage alternating voltage which changes reversely is applied to the upper screen electrode and the lower screen electrode, the generated coulomb force and dielectrophoresis force act on dust particles near the electrodes, the dust particles can be frictionally charged by the left and right sliding of the lower screen electrode on the surface of the heliostat, and the dust particles on the surface of the heliostat are stirred by an alternating electrostatic field near the electrodes and are ejected through a gap between the upper screen electrode and the lower screen electrode; the ejected dust settles to the ground under the action of gravity.
Through the technical scheme, the electrostatic dust removal device and the method for the heliostat have the following beneficial effects:
1. the invention uses electrostatic dust collection, does not consume water resources;
2. although the working voltage is very high, the maximum current is very low, the safety is high, and the energy consumption is very low;
2. the device is placed on the surface of the heliostat for dedusting only when the heliostat needs to be cleaned, so that the reflectivity of the heliostat is not reduced;
4. the invention has low implementation cost and is suitable for the existing optical-thermal power plants.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic view of an electrostatic precipitator for a heliostat according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of an electrostatic precipitator for heliostats that is modularly assembled;
fig. 3 is a schematic diagram of an electrostatic dust removal method for a heliostat according to an embodiment of the disclosure.
In the figure, 1, an insulating frame; 2. an upper screen electrode; 3. a lower screen electrode; 4. a high voltage AC power supply; 5. cleaning vehicle; 6. a vibration motor; 7. a telescopic swing arm; 8. a support; 9. a heliostat.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention provides an electrostatic dust removal device for a heliostat 9, which comprises an insulating frame 1, wherein upper screen electrodes 2 which are arranged in parallel are fixed on the upper surface of the insulating frame 1, lower screen electrodes 3 which are arranged in parallel are fixed on the lower surface of the insulating frame 1, and the upper screen electrodes 2 and the lower screen electrodes 3 are arranged at an angle of 90 degrees; wherein, the warp is the upper screen electrode 2, the weft is the lower screen electrode 3, also the warp is the lower screen electrode 3, and the weft is the upper screen electrode 2. The upper screen electrode 2 and the lower screen electrode 3 are respectively connected with a high-voltage alternating current power supply 4 which changes reversely.
In the embodiment of the invention, the upper screen electrode 2 and the lower screen electrode 3 are made of copper wires, and polyester films are coated on the surfaces of the copper wires. Specifically, the diameter of the copper wire is 1mm, the thickness of the polyester film is 0.15mm, and the polyester film can prevent dielectric breakdown.
In the embodiment of the invention, the distance between two adjacent upper screen electrodes 2 is 5mm, the distance between two adjacent lower screen electrodes 3 is 5mm, and the gap between the upper screen electrode 2 and the lower screen electrode 3 is 5mm.
In this embodiment, the frequency of the low-frequency high-voltage ac voltage is 1 to 10Hz, and the voltage is 9kV.
The electrostatic dust removal device can be spliced in a modularized manner, and as shown in fig. 2, dust removal of heliostats 9 with different areas is realized.
In an electrostatic dust removing method for a heliostat 9, the electrostatic dust removing apparatus of the present invention may be assembled to a cleaning vehicle 5, as shown in fig. 3, the cleaning vehicle 5 is equipped with a high voltage ac power source 4 and a vibration motor 6, and the electrostatic dust removing apparatus is connected to the vibration motor 6 through a bracket 8. By means of the telescopic swing arm 7, the dust removal device can be used for dust removal of heliostats 9 with different areas and different heights.
The method comprises the following specific steps:
when the heliostat 9 is dirty and needs to be cleaned, the insulating frame 1 is placed on the surface of the heliostat 9, the lower screen electrode 3 is enabled to be tightly attached to a lens of the heliostat 9, the high-voltage alternating-current power supply 4 is switched on, and the insulating frame 1 is driven by the vibrating motor 6 to slide left and right on the surface of the heliostat 9; when a low-frequency high-voltage alternating voltage which changes reversely is applied to the upper screen electrode 2 and the lower screen electrode 3, coulomb force and dielectrophoresis force generated act on dust particles near the electrodes, the lower screen electrode 3 slides left and right on the surface of the heliostat 9 to charge the dust particles by friction, and the dust particles on the surface of the heliostat 9 are stirred by an alternating electrostatic field near the electrodes and are ejected through a gap between the upper screen electrode 2 and the lower screen electrode 3; the ejected dust settles to the ground under the action of gravity.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An electrostatic dust removal device for a heliostat is characterized by comprising an insulating frame, wherein upper screen electrodes which are arranged in parallel are fixed on the upper surface of the insulating frame, lower screen electrodes which are arranged in parallel are fixed on the lower surface of the insulating frame, and the upper screen electrodes and the lower screen electrodes are arranged in an angle of 90 degrees; the upper screen electrode and the lower screen electrode are respectively connected with a high-voltage alternating-current power supply which changes reversely.
2. The electrostatic precipitator for a heliostat of claim 1, wherein the upper shield electrode and the lower shield electrode are made of copper wires and coated with a polyester film.
3. The electrostatic precipitator for a heliostat according to claim 2, wherein the diameter of the copper wire is 1mm and the thickness of the polyester film is 0.15mm.
4. The electrostatic precipitator device for a heliostat, according to claim 1, wherein the distance between two adjacent upper shield electrodes is 5mm, the distance between two adjacent lower shield electrodes is 5mm, and the gap between the upper shield electrodes and the lower shield electrodes is 5mm.
5. The electrostatic precipitator device for a heliostat according to claim 1, wherein the low-frequency high-voltage ac voltage has a frequency of 1 to 10Hz and a voltage of 9kV.
6. An electrostatic dust removal method for a heliostat is adopted, the electrostatic dust removal device for the heliostat is the device according to claim 1, and is characterized in that during cleaning, an insulating frame is arranged on the surface of the heliostat, a lower screen electrode is made to be tightly attached to a lens of the heliostat, a high-voltage alternating-current power supply is switched on, and the insulating frame is driven by an external driving device to slide left and right on the surface of the heliostat; when low-frequency high-voltage alternating voltages which change reversely are applied to the upper screen electrode and the lower screen electrode, coulomb force and dielectrophoresis force generated act on dust particles near the electrodes, the dust particles can be frictionally charged by the left-right sliding of the lower screen electrode on the surface of the heliostat, and the dust particles on the surface of the heliostat are stirred by an alternating electrostatic field near the electrodes and are ejected through a gap between the upper screen electrode and the lower screen electrode; the ejected dust settles to the ground under the action of gravity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210852902.2A CN115301634A (en) | 2022-07-20 | 2022-07-20 | Electrostatic dust removal device and method for heliostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210852902.2A CN115301634A (en) | 2022-07-20 | 2022-07-20 | Electrostatic dust removal device and method for heliostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115301634A true CN115301634A (en) | 2022-11-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210852902.2A Pending CN115301634A (en) | 2022-07-20 | 2022-07-20 | Electrostatic dust removal device and method for heliostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115301634A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6076216A (en) * | 1997-08-04 | 2000-06-20 | Ben-Gurion University Of Negev | Apparatus for dust removal from surfaces |
| US6500268B1 (en) * | 2000-08-18 | 2002-12-31 | Silicon Genesis Corporation | Dry cleaning method |
| JP2008018340A (en) * | 2006-07-13 | 2008-01-31 | Trinc:Kk | Apparatus for collecting floating material and apparatus for repelling floating material |
| US20090190219A1 (en) * | 2008-01-30 | 2009-07-30 | Dell Products L.P. | Systems and Methods for Contactless Automatic Dust Removal From a Glass Surface |
| CN101585015A (en) * | 2008-05-20 | 2009-11-25 | 中国科学院空间科学与应用研究中心 | Plane dust collection device |
| CN102489474A (en) * | 2011-12-15 | 2012-06-13 | 北京石油化工学院 | Dedusting device and dedusting structure |
| US20140150816A1 (en) * | 2012-10-01 | 2014-06-05 | Scott Potter | Automatic solar power surface-cleaner |
| CN104588369A (en) * | 2013-11-01 | 2015-05-06 | 上海空间电源研究所 | Dust collection device of spiral electric curtain |
| CN105642615A (en) * | 2016-03-30 | 2016-06-08 | 哈尔滨工业大学（威海） | Photoelectric scavenging system for lunar dust on surface of lunar probe |
| CN109577815A (en) * | 2018-11-15 | 2019-04-05 | 崔云天 | It is a kind of to remove haze window automatically |
| WO2019134736A1 (en) * | 2018-01-02 | 2019-07-11 | Fortum Oyj | Solar panel cleaning apparatus and method |
-
2022
- 2022-07-20 CN CN202210852902.2A patent/CN115301634A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6076216A (en) * | 1997-08-04 | 2000-06-20 | Ben-Gurion University Of Negev | Apparatus for dust removal from surfaces |
| US6500268B1 (en) * | 2000-08-18 | 2002-12-31 | Silicon Genesis Corporation | Dry cleaning method |
| JP2008018340A (en) * | 2006-07-13 | 2008-01-31 | Trinc:Kk | Apparatus for collecting floating material and apparatus for repelling floating material |
| US20090190219A1 (en) * | 2008-01-30 | 2009-07-30 | Dell Products L.P. | Systems and Methods for Contactless Automatic Dust Removal From a Glass Surface |
| CN101585015A (en) * | 2008-05-20 | 2009-11-25 | 中国科学院空间科学与应用研究中心 | Plane dust collection device |
| CN102489474A (en) * | 2011-12-15 | 2012-06-13 | 北京石油化工学院 | Dedusting device and dedusting structure |
| US20140150816A1 (en) * | 2012-10-01 | 2014-06-05 | Scott Potter | Automatic solar power surface-cleaner |
| CN104588369A (en) * | 2013-11-01 | 2015-05-06 | 上海空间电源研究所 | Dust collection device of spiral electric curtain |
| CN105642615A (en) * | 2016-03-30 | 2016-06-08 | 哈尔滨工业大学（威海） | Photoelectric scavenging system for lunar dust on surface of lunar probe |
| WO2019134736A1 (en) * | 2018-01-02 | 2019-07-11 | Fortum Oyj | Solar panel cleaning apparatus and method |
| CN109577815A (en) * | 2018-11-15 | 2019-04-05 | 崔云天 | It is a kind of to remove haze window automatically |
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