CN111087082A - Movable wind energy aeration system for lake treatment - Google Patents
Movable wind energy aeration system for lake treatment Download PDFInfo
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- CN111087082A CN111087082A CN201811240399.5A CN201811240399A CN111087082A CN 111087082 A CN111087082 A CN 111087082A CN 201811240399 A CN201811240399 A CN 201811240399A CN 111087082 A CN111087082 A CN 111087082A
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- Prior art keywords
- aeration
- floating body
- branch
- wind
- pipes
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- 238000005273 aeration Methods 0.000 title claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000007667 floating Methods 0.000 claims abstract description 44
- 230000000007 visual effect Effects 0.000 claims abstract description 10
- 230000009189 diving Effects 0.000 claims abstract description 8
- 239000000523 sample Substances 0.000 claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 238000012851 eutrophication Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Power Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a movable wind energy aeration system for lake treatment, which comprises a floating body, a wind driven generator, a visual detector, a storage battery, an air compressor, a diving flow pushing paddle, a main aeration pipe and a branch aeration pipe, wherein the surface of the floating body is integrally closed, the center of the floating body is hollow, the wind driven generator is provided with a plurality of impellers which are integrally combined into a sphere to ensure that the wind driven generator is not restrained by wind direction in operation, the visual detector is provided with two probes, peripheral obstacles and the water depth of the position of the system are detected according to a set distance, the turning direction of the diving flow pushing paddle is adjusted to avoid the collision between the floating body and the obstacles or the grounding formation, the main aeration pipe is arranged around the circular boundary of the bottom surface of the floating body, the branch aeration pipes are uniformly arranged according to a certain interval, aeration holes are uniformly arranged on the branch aeration pipes, and the opening direction is back to the center of, the system of the invention can automatically operate without manual operation, and highly realizes automatic control.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a movable wind energy aeration system for lake treatment.
Background
Although the total amount of water resources in China is large, the water consumption per person is low due to the large population, and the water resources which can be used as drinking water are more limited. The pollutants brought into the water bodies of rivers, lakes and the like by the industrial wastewater, the domestic sewage and other wastes exceed the self-purification capacity of the water bodies, and the serious pollution of the water bodies is caused. After the water body is polluted, physical, chemical, biological and other characteristics of the water body are changed, so that the utilization value of the water is influenced, and the human health is harmed or the ecological environment is damaged. The most complicated and difficult problem in water pollution treatment is eutrophication, on one hand, because the pollution source is relatively complicated, the pollution source is not only a natural source but also an artificial source, and is not only exogenous but also endogenous; on the other hand, the difficulty of removing the nutrient substances is high. The content of plant nutrient substances such as nitrogen, phosphorus and the like in the slow-flow water bodies such as lakes, rivers, gulfs and the like is too high, and eutrophication is easily caused. When eutrophication occurs in the water body, a large amount of phytoplankton in the water body is bred, the content of dissolved oxygen in the water is reduced, so that the fish are difficult to survive, the algae species are reduced, and the aging of the water bodies such as lakes and the like is accelerated.
The technical means adopted by the prior art aiming at polluted water bodies such as lakes and the like mainly comprise engineering measures, chemical methods and biological technologies. The engineering measures comprise methods of excavating sediment, carrying out deep aeration on a water body, injecting water and flushing thin, laying plastic on the surface of the sediment and the like. The chemical method mainly comprises coagulation sedimentation and algae killing by chemical agents, such as adding iron, calcium or aluminum into water, and precipitating by reacting with soluble salt to generate insoluble precipitate for removal. The biological technology is mainly to remove nutrient components in water by using aquatic organisms to absorb elements such as nitrogen, phosphorus and the like to carry out metabolic activities. The biological technology is applied mostly in biological repair technology, and the measures usually adopted are dissolved oxygen concentration control, light intensity control, vertical mixing control, lake-entering river nutrient salt control, fish community control and lakeside zone ecological control. Among the three methods, the influence of engineering measures on the ecosystem is small, but the method generally needs to be operated by people, needs a large amount of energy consumption, time consumption and labor consumption and has low efficiency. The chemical method needs to add medicaments into the water body to reduce the content of pollutants, but the dosage is difficult to control, and if the dosage is too much, secondary pollution is caused to the water body. The biological technology has small influence on the water body, but needs manual management, has harsh growth conditions, is very susceptible to the influence of seasons, and has poor adaptability. Therefore, how to provide a treatment system which can save energy and manpower and can not generate secondary pollution to the water body has great practical significance.
At present, many researchers propose methods for treating polluted water bodies by using solar energy or wind energy as energy sources, such as a method for increasing the concentration of dissolved oxygen in the polluted water bodies by aerating the polluted water bodies. For example, chinese patent document CN2015207145853 discloses a mobile solar flow-pushing aeration device for river regulation and maintenance, and more particularly, to a device using solar energy as an energy source and including a solar panel, an aeration device, a storage battery and a propeller, which requires people to complete the operation and cannot operate by itself. For example, chinese patent document CN201710569566X discloses a tank-type solar floating island and ecological water restoration system, which includes a water outlet tank, a water inlet tank, a plurality of aeration units, a water outlet pipeline, a water inlet pipeline, a floating body, a solar panel, green plants, etc., but the final treatment effect of the system depends on the absorption of the plants, and is greatly affected by seasons, and the treatment effect is unstable. Besides more applications of solar energy, wind energy is widely applied to the field of water treatment, but the wind sweeping area of an impeller of a wind driven generator used in most processes is greatly influenced by the wind direction, so that the output power of the generator is low. Therefore, how to improve the output efficiency of the wind turbine is also a problem to be solved for effective utilization of wind energy.
Disclosure of Invention
The invention aims to provide a movable wind energy aeration system for lake treatment, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a movable wind energy aeration system for lake treatment comprises a floating body, a wind driven generator, a visual detector, a storage battery, an air compressor, a submersible impelling paddle, a main aeration pipe and branch aeration pipes, wherein the system drives the air compressor and the submersible impelling device to operate by energy obtained by the wind driven generator, the main aeration pipe is arranged at the bottom of the floating body and is uniformly arranged around the circular boundary of the bottom surface of the floating body, the branch aeration pipes are uniformly arranged at certain intervals, the air compressor conveys and distributes gas into the branch aeration pipes through the main aeration pipe and aerates the gas into a water body through aeration holes arranged on the branch aeration pipes, the surface of the floating body is integrally closed, the center of the floating body is hollow and is used for placing equipment such as the storage battery, the air compressor and the like, the submersible impelling paddle acts on the movement of the system through impelling, the wind driven generator is arranged on the upper surface of, a sensor mounted on the upper surface of the floating body for detecting the surrounding obstacles according to a set distance; the other one is arranged on the bottom surface of the floating body and is used for detecting the water depth of the position of the system, the main aeration pipe is arranged at the bottom of the floating body, and the bottom ends of the branch aeration pipes are connected with the balancing weight so as to maintain the vertical state of the branch aeration pipes in water.
As a further scheme of the invention: the upper surface of the floating body is a big circle, the bottom surface of the floating body is a small circle, and the whole floating body looks similar to a bowl in shape.
The wind driven generator comprises a plurality of impellers, the impellers are flaky, and the plurality of impellers are integrally combined to form a spherical shape.
The main aeration pipe and the branch aeration pipes of the system are made of flexible pipes.
As a still further scheme of the invention: the branch aeration pipes are provided with aeration holes which are uniformly arranged, and the opening direction of the branch aeration pipes is back to the center of the floating body.
Compared with the prior art, the invention has the beneficial effects that:
1. the floating body of the system is in a bowl shape, so that the floating body is not only favorable for placing a wind driven generator, but also can be used as a place for placing other equipment by setting the center of the floating body to be hollow, thereby being favorable for keeping the balance of the system.
2. A plurality of impellers of the wind driven generator of the system form a sphere, the maximum wind sweeping area of the impellers can be kept under the condition of any wind direction, and the output power of the wind driven generator is ensured.
3. The application of the visual detector can enable the system to realize automatic control, the diving propeller turning direction can be adjusted according to the detection result, and manual operation is not needed.
4. The main aeration pipe of the system is annular, and the branch aeration pipes are arranged at certain intervals, so that oxygen can be provided for the polluted water body in an all-round manner, the air compressor is used in the system, the aeration of the deep water body can be realized, the moving distance of the gas in the water body is prolonged, and the solubility of the oxygen in the water body is improved.
Drawings
FIG. 1 is an elevation view of a mobile wind energy aeration system for lake treatment.
FIG. 2 is a plan view of a mobile wind energy aeration system for lake treatment.
In the figure: 1-water body, 2-floating body, 3-wind driven generator, 4-visual detector, 5-storage battery, 6-air compressor, 7-diving propeller, 8-main aeration pipe, 9-branch aeration pipe and 10-balancing weight.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-2, a movable wind energy aeration system for lake treatment comprises a floating body 2, a wind driven generator 3, a visual detector 4, a storage battery 5, an air compressor 6, a submersible propulsion paddle 7, a main aeration pipe 8 and a branch aeration pipe 9, wherein the system drives the air compressor 6 and the submersible propulsion paddle 7 to operate by energy obtained by the wind driven generator 3, the air compressor 6 conveys and distributes air into the branch aeration pipe 9 through the main aeration pipe 8, then the air is aerated into a water body through aeration holes arranged on the branch aeration pipe 9, and the submersible propulsion paddle 7 acts on the movement of the system through propulsion.
As shown in fig. 2, the floating body 2 has a large round upper surface and a small round bottom surface, and looks like a bowl as a whole, and the floating body 2 has a closed surface and a hollow center for accommodating devices such as a battery 5 and an air compressor 6.
As shown in fig. 1 and 2, the wind power generator 3 is installed on the upper surface of the floating body 2, and comprises a plurality of impellers, and the impellers are sheet-shaped, the plurality of impellers are integrally combined to form a sphere to ensure that the operation of the wind power generator is not restricted by the wind direction, the swept area of the impeller is the largest under any wind, the highest output power is obtained, and a part of the collected energy is used for providing the operation power of the air compressor 6 and the diving propeller 7; the redundant part is stored in the storage battery 5 after rectification, and when the wind power in the external environment is small, the battery energy of the storage battery 5 is converted into the required operation power by the inverter.
The visual detector 4 is provided with two probes, one probe is arranged on the upper surface of the floating body 2, and the visual detector detects surrounding obstacles according to a set distance; and the other one is arranged on the bottom surface of the floating body and is used for detecting the water depth of the position of the system, and when the detection value shows that the distance between the floating body 2 and the barrier or the water depth of the position of the system is smaller than a set value, the visual detector 4 intelligently adjusts the turning direction of the diving thrust paddle 7 to avoid the collision between the floating body 2 and the barrier or the running to the shore to form grounding.
The main aeration pipes 8 are installed at the bottom of the floating body 2, arranged around the circular boundary of the bottom surface of the floating body 2, and the branch aeration pipes 9 are uniformly arranged at certain intervals.
The bottom end of the branch aeration pipe 9 is connected with a balancing weight 10 to maintain the vertical state of the branch aeration pipe 9 in water, the branch aeration pipe 9 is provided with aeration holes which are uniformly arranged, and the opening direction of the branch aeration pipe is back to the center of the floating body 2.
The invention does not need manual operation and can realize automatic operation
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (5)
1. A movable wind energy aeration system for lake treatment is characterized by comprising a floating body (2), a wind driven generator (3), a visual detector (4), a storage battery (5), an air compressor (6), a diving plug flow paddle (7), a main aeration pipe (8) and branch aeration pipes (9), wherein the system drives the air compressor (6) and the diving plug flow device (7) to operate through energy obtained by the wind driven generator (3), the main aeration pipe (8) is arranged at the bottom of the floating body (2) and is arranged around the circular boundary of the bottom surface of the floating body (2), the branch aeration pipes (9) are uniformly arranged at certain intervals, the air compressor (6) conveys and distributes gas into the branch aeration pipes (9) through the main aeration pipe (8), then aerates the water body (1) through aeration holes arranged on the branch aeration pipes (9), the surface of the floating body (2) is integrally closed, the center is hollow and used for placing equipment such as a storage battery (5), an air compressor (6) and the like, a diving thrust paddle (7) acts on the movement of a system through thrust, the wind driven generator (3) is installed on the upper surface of the floating body (2), the visual detector (4) is provided with two probes, one probe is installed on the upper surface of the floating body (2), and surrounding obstacles are detected according to a set distance; the other one is arranged on the bottom surface of the floating body and is used for detecting the water depth of the position of the system, the main aeration pipe (8) is arranged at the bottom of the floating body (2), and the bottom ends of the branch aeration pipes (9) are connected with a balancing weight (10) so as to maintain the vertical state of the branch aeration pipes (9) in the water.
2. The mobile wind aeration system for lake treatment according to claim 1, wherein the upper surface of the floating body (2) is a large circle and the bottom surface is a small circle, and the whole looks like a bowl.
3. The mobile wind aeration system for lake treatment according to claim 1, wherein the wind power generator (3) comprises a plurality of impellers, and the impellers are in a shape of a sheet, and the plurality of impellers are integrally combined to form a sphere.
4. The mobile wind energy aeration system for lake treatment according to claim 1, wherein the main aeration pipe (8) and the branch aeration pipes (9) of the system are made of flexible pipes.
5. The mobile wind energy aeration system for lake treatment according to claim 1 wherein the branch aeration pipes (9) have uniformly arranged aeration holes with the opening direction facing away from the center of the floating body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240399.5A CN111087082A (en) | 2018-10-23 | 2018-10-23 | Movable wind energy aeration system for lake treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811240399.5A CN111087082A (en) | 2018-10-23 | 2018-10-23 | Movable wind energy aeration system for lake treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111087082A true CN111087082A (en) | 2020-05-01 |
Family
ID=70391987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811240399.5A Withdrawn CN111087082A (en) | 2018-10-23 | 2018-10-23 | Movable wind energy aeration system for lake treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111087082A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114194335A (en) * | 2021-12-27 | 2022-03-18 | 湖北中南鹏力海洋探测***工程有限公司 | Intelligent drifting buoy with power device |
-
2018
- 2018-10-23 CN CN201811240399.5A patent/CN111087082A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114194335A (en) * | 2021-12-27 | 2022-03-18 | 湖北中南鹏力海洋探测***工程有限公司 | Intelligent drifting buoy with power device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200501 |
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| WW01 | Invention patent application withdrawn after publication |