CN114352457B - Raindrop driven rotary motion device - Google Patents
Raindrop driven rotary motion device Download PDFInfo
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- CN114352457B CN114352457B CN202111636108.6A CN202111636108A CN114352457B CN 114352457 B CN114352457 B CN 114352457B CN 202111636108 A CN202111636108 A CN 202111636108A CN 114352457 B CN114352457 B CN 114352457B
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- water
- raindrops
- rotary motion
- raindrop
- rainwater
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- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B1/00—Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
- F03B1/02—Buckets; Bucket-carrying rotors
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- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B1/00—Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
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- 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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B1/00—Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
- F03B1/04—Nozzles; Nozzle-carrying members
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention provides a raindrop-driven rotary motion device which comprises a rainwater transportation part, a water collection part and a water jet gap. The maximum diameter of the conical rainwater transportation component is equal to the diameter of the circular water collecting component, so that rainwater can be collected conveniently. The surfaces of the rainwater transportation part and the water collection part are both provided with super hydrophobicity. The super-hydrophilic water jet gaps are uniformly distributed along the circumference of the water collecting component, and have certain inclination angles, so that the jetted raindrops can react on the device to generate torque to promote the device to generate rotary motion. The invention can convert the surface energy of raindrops into the kinetic energy of the device, has the advantages of quick response, large power, long duration and the like in the raindrop driving process, can realize the efficient continuous rotation driving of the raindrops on the device, and has wide application range.
Description
Technical Field
The invention relates to a raindrop-driven rotary motion device which can convert the surface energy of raindrops into the kinetic energy of the device.
Background
Rainfall is a common natural phenomenon. However, the energy of the raindrops is also dissipated as the rainfall merges into the water. In order to collect and fully utilize the energy stored by raindrops during rainfall, researchers have done a lot of work, one of which is to use raindrops to drive objects in motion. The document Advanced Functional Materials,2020,30(16),1910599 reports a phenomenon in which raindrops collected in advance can pass through holes and generate jet flows when they are dropped on super-hydrophilic pores on a super-hydrophobic surface, thereby driving the whole device to move on the water surface. However, the device has a high requirement on the dropping position of raindrops, and only a single raindrop which is accurately and very gently dropped on a hole can drive the device. The literature (spontaneous gap water jet phenomenon and self-driven micro-ship research thereof, 2021, university of great graduate) reports that the phenomenon that water drops generate jet flow through a super-hydrophilic gap and drive a boat to move realizes the conversion of water drop energy into boat kinetic energy, but the design has higher requirements on the dropping position of the water drops and can only realize the linear motion of the boat. The literature Nature Communications,2019,10(1),950 reports that a phenomenon that raindrops rotate when impacting a superhydrophobic surface with a hydrophilic pattern and rebounding, and under the action of a pinning force between the raindrops and the hydrophilic pattern, the rotating raindrops can drive a substrate suspended by magnetic force to rotate, so that conversion from raindrops energy to substrate kinetic energy is realized. However, only the raindrops dropped on the central portion of the hydrophilic pattern can be driven to rotate, and thus, both the driving efficiency and the energy utilization rate are low.
In summary, the existing method for driving an object to move by using raindrops energy has certain limitations, and cannot capture dense, large-volume and high-speed raindrops to drive the object to rotate.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a device which is green and environment-friendly and can realize continuous rotary motion by utilizing raindrop energy.
In order to achieve the purpose, the invention adopts the technical scheme that:
a raindrop driving rotary motion device comprises a rainwater transportation part 1, a water collecting part 2 and water jet gaps 3.
The rainwater transportation part 1 is made of a metal material and is in a cone shape, the cone angle is 60-160 degrees, after the surface is sequentially subjected to chemical etching and low surface modification, super-hydrophobicity is obtained, and the contact angle of water drops on the surface is larger than 150 degrees.
The water collecting part 2 is made of metal materials and is in a circular ring shape, and the surface of the water collecting part is subjected to low surface energy modification after laser etching or chemical etching to obtain super-hydrophobicity. Along the circumference of the water collecting component 2, a plurality of water jet gaps 3 with certain inclination angles are machined on the circular ring at equal intervals by a laser etching method, wherein the included angle between the direction of the water jet gaps 3 and the diameter of the circular ring is 10-80 degrees, the width of the water jet gaps 3 is 0.2-0.6 mm, the surfaces of the water jet gaps 3 have super-hydrophilicity, and the contact angle of water drops on the surfaces is less than 10 degrees.
The maximum diameter of the rainwater transportation part 1 is equal to the diameter of the water collection part 2, and one end of the water collection part 2 is connected with the outer edge of the maximum diameter of the rainwater transportation part 1. When raindrops drop on the device, under the effect of the rainwater transportation part 1, the raindrops move and contact the super-hydrophilic gap inclined on the water collection part 2, and the raindrops form jet flow under the effect of internal Laplace pressure and react on the device to drive the device to generate rotary motion.
Furthermore, the width and the inclination angle of the water jet gap 3 can be processed into different specifications according to the requirement of the rotation speed of the device and the rainfall.
Further, the rainwater transportation component 1 is made of metal materials with low density, such as aluminum alloy or magnesium alloy.
Furthermore, the water collecting component 2 is made of metal material with low density, such as aluminum alloy or magnesium alloy.
Compared with the existing raindrop driving rotating device, the raindrop driving rotating device has the following beneficial effects:
1) the invention has simple structure, does not need to use expensive materials and has wide application range.
2) The invention does not need to design a complex wettability pattern, can realize the collection and utilization of raindrops dropping at any position in the device through the transportation and collection device, and has no accurate requirement on the dropping position of the raindrops.
3) The driving device utilizes Laplace pressure in raindrops to drive, raindrops have high energy release speed, efficient and continuous driving can be realized by continuously adding raindrops, and the energy utilization rate is high.
4) The invention can design the size, the gap width and the inclination angle of the device to adapt to rainfall with different flow rates so as to achieve the optimal rotary driving effect.
Drawings
Fig. 1 is a schematic structural view of a raindrop-driven rotary motion device according to the present invention;
FIG. 2 is a cross-sectional view taken along plane A-A of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
in the figure: 1 rainwater transportation part, 2 water collection parts and 3 water jet gaps.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
Example 1
A structure of a raindrop-driven rotary motion device is shown in fig. 1, and includes a rainwater transport part 1, a water collection part 2, and water jet slits 3. The used material of whole device is aluminum alloy material, and rainwater transportation part 1 and water collection part 2 size equal, and the diameter is about 30mm, and water collection part 2 highly is 15 mm. The whole rainwater transportation component 1 is in a cone shape, the cone angle is 120 degrees, the super-hydrophobicity of the surface is obtained through laser etching and low surface energy modification, and the contact angle of water drops on the surface is larger than 150 degrees. Water-collecting component 2 processes out the super hydrophilic gap that the width is 0.3mm, and length is 12mm, and inclination is 45 through laser etching, and gap one end extends to water-collecting component 2's bottom. The inside of the slit has super-hydrophilicity, and a contact angle of a water drop on the slit is less than 10 degrees. The cross-sectional view and the bottom view of the entire apparatus are shown in fig. 2 and 3, and it can be seen that the superhydrophilic slits are uniformly distributed and present at an angle in the water collecting part 2. When raindrops drop on the device, under the effect of the rainwater transportation part 1, the raindrops move and easily contact the super-hydrophilic gap inclined on the water collection part 2, and the raindrops form jet flow under the effect of internal Laplace pressure and react on the device to drive the device to generate rotary motion.
Example 2
A structure of a raindrop-driven rotary motion device is shown in fig. 1, and includes a rainwater transport part 1, a water collection part 2, and water jet slits 3. The material used by the whole device is magnesium alloy material, the rainwater transportation component 1 and the water collection component 2 are equal in size, the diameter is about 20mm, and the height of the water collection component 2 is 10 mm. The whole rainwater transportation component 1 is a cone, the cone angle is 140 degrees, the super-hydrophobicity of the surface is obtained by laser etching and low surface energy modification, and the contact angle of water drops on the surface is larger than 150 degrees. Water-collecting component 2 processes out the width through laser etching and is 0.2mm, and length is 8mm, and inclination is 30 super hydrophilic gap, and gap one end extends to water-collecting component 2's bottom. The inside of the slit has super-hydrophilicity on which a contact angle of a water drop is less than 10 deg. The cross-sectional view and the bottom view of the entire apparatus are shown in fig. 2 and 3, and it can be seen that the superhydrophilic slits are uniformly distributed and present at an angle in the water collecting part 2. When raindrops drop on the device, under the effect of the rainwater transportation part 1, the raindrops move and easily contact the super-hydrophilic gap inclined on the water collection part 2, and the raindrops form jet flow under the effect of internal Laplace pressure and react on the device to drive the device to generate rotary motion.
Example 3
A structure of a raindrop-driven rotary motion device is shown in fig. 1, and includes a rainwater transport part 1, a water collection part 2, and water jet slits 3. The material used by the whole device is magnesium alloy material, the rainwater transportation component 1 and the water collection component 2 have the same size, the diameter is about 40mm, and the height of the water collection component 2 is 25 mm. The rainwater transportation component 1 is integrally conical, the cone angle is 160 degrees, the super-hydrophobicity of the surface is obtained by laser etching and low surface energy modification, and the contact angle of water drops on the surface is larger than 150 degrees. Water-collecting component 2 processes out the super hydrophilic gap that the width is 0.4mm, and length is 20mm, and inclination is 60 through laser etching, and gap one end extends to water-collecting component 2's bottom. The inside of the slit has super-hydrophilicity on which a contact angle of a water drop is less than 10 deg. The cross-sectional view and the bottom view of the entire device are shown in fig. 2 and 3, and it can be seen that the superhydrophilic slits are uniformly distributed and present at an angle in the water collecting part 2. When raindrops drop on the device, under the action of the rainwater transportation part 1, the raindrops move and easily contact the super-hydrophilic gap inclined on the water collection part 2, and the raindrops form jet flow under the action of internal Laplace pressure and react on the device to drive the device to generate rotary motion.
The specific use mode is as follows: the raindrop-driven rotary motion device is placed on the water surface, and a rainfall simulation test is carried out. The water collecting part 2 collects rainfall to avoid unnecessary loss, raindrops easily contact with the super-hydrophilic gap 3 under the action of gravity and the rainwater transportation part 1 and generate jet flow, and the generated jet flow reacts on the device to form torque to drive the device to generate rotary motion. Through the continuous rainfall test, the device can realize lasting efficient rotary motion.
The above-mentioned embodiments only express the embodiments of the present invention, but not should be understood as the limitation of the scope of the invention patent, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these all fall into the protection scope of the present invention.
Claims (4)
1. A raindrop-driven rotary motion device, characterized in that the device comprises a rainwater transport part (1), a water collection part (2) and water jet slots (3);
the rainwater transportation part (1) is made of a metal material and is in a cone shape, the cone angle is 60-160 degrees, the surface is subjected to chemical etching and low surface modification sequentially to obtain super-hydrophobicity, and the contact angle of water drops on the surface is larger than 150 degrees; the water collecting part (2) is made of metal materials and is in a circular ring shape, and the surface of the water collecting part is subjected to low surface energy modification after laser etching or chemical etching to obtain super-hydrophobicity; a plurality of water jet gaps (3) with a certain inclination angle are machined on the circular ring at equal intervals along the circumference of the water collecting part (2) by a laser etching method, wherein the included angle between the direction of the water jet gaps (3) and the diameter of the circular ring is 10-80 degrees, the width of the water jet gaps (3) is 0.2-0.6 mm, the surfaces of the water jet gaps (3) have super-hydrophilicity, and the contact angle of water drops on the surfaces is smaller than 10 degrees; the maximum diameter of the rainwater transportation part (1) is equal to the diameter of the water collection part (2), and the end part of the water collection part (2) is connected with the outer edge of the rainwater transportation part (1);
when raindrops drop on the device, under the action of the rainwater transportation part (1), the raindrops move and contact the super-hydrophilic water jet gap (3) inclined on the water collection part (2), and the raindrops form jet flow under the action of internal Laplace pressure and react on the device to drive the device to generate rotary motion.
2. A raindrop driven rotary motion device according to claim 1, wherein the width and the angle of inclination of the water jet slits (3) are machined to different specifications according to the device rotation speed requirement and the amount of rainfall.
3. A raindrop driven rotary motion device according to claim 1, wherein the rain transporting member (1) is an aluminium alloy or a magnesium alloy or other low density metal material.
4. A raindrop driven rotary motion device according to claim 1, wherein the water collection member (2) is an aluminum alloy or a magnesium alloy or other low density metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111636108.6A CN114352457B (en) | 2021-12-29 | 2021-12-29 | Raindrop driven rotary motion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111636108.6A CN114352457B (en) | 2021-12-29 | 2021-12-29 | Raindrop driven rotary motion device |
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| CN114352457A CN114352457A (en) | 2022-04-15 |
| CN114352457B true CN114352457B (en) | 2022-09-02 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996029375A1 (en) * | 1995-03-20 | 1996-09-26 | Toto Ltd. | Method of photocatalytically making the surface of base material ultrahydrophilic, base material having ultrahydrophilic and photocatalytic surface, and process for producing said material |
| CN201218167Y (en) * | 2008-06-18 | 2009-04-08 | 李佐明 | Power generation apparatus by rainwater |
| CN103343725A (en) * | 2013-07-22 | 2013-10-09 | 哈尔滨工业大学 | Composite rainwater power generation device based on mini water bucket and PVDF film piezoelectric technology |
| CN104806460A (en) * | 2015-05-10 | 2015-07-29 | 西华大学 | Water mist collecting type driving device |
| EP3043004A1 (en) * | 2015-01-09 | 2016-07-13 | Jean-Yves Cuzin | Turbine supply system from a rainwater downspout |
| CN111250869A (en) * | 2020-01-21 | 2020-06-09 | 大连理工大学 | Method for preparing aluminum sheet with super-hydrophilic/super-hydrophobic pattern and application |
| CN111252227A (en) * | 2020-02-10 | 2020-06-09 | 大连理工大学 | Water droplet collection type unpowered self-driven miniature ship |
| CN111301651A (en) * | 2020-02-10 | 2020-06-19 | 大连理工大学 | Continuous self-driven miniature ship |
-
2021
- 2021-12-29 CN CN202111636108.6A patent/CN114352457B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996029375A1 (en) * | 1995-03-20 | 1996-09-26 | Toto Ltd. | Method of photocatalytically making the surface of base material ultrahydrophilic, base material having ultrahydrophilic and photocatalytic surface, and process for producing said material |
| CN201218167Y (en) * | 2008-06-18 | 2009-04-08 | 李佐明 | Power generation apparatus by rainwater |
| CN103343725A (en) * | 2013-07-22 | 2013-10-09 | 哈尔滨工业大学 | Composite rainwater power generation device based on mini water bucket and PVDF film piezoelectric technology |
| EP3043004A1 (en) * | 2015-01-09 | 2016-07-13 | Jean-Yves Cuzin | Turbine supply system from a rainwater downspout |
| CN104806460A (en) * | 2015-05-10 | 2015-07-29 | 西华大学 | Water mist collecting type driving device |
| CN111250869A (en) * | 2020-01-21 | 2020-06-09 | 大连理工大学 | Method for preparing aluminum sheet with super-hydrophilic/super-hydrophobic pattern and application |
| CN111252227A (en) * | 2020-02-10 | 2020-06-09 | 大连理工大学 | Water droplet collection type unpowered self-driven miniature ship |
| CN111301651A (en) * | 2020-02-10 | 2020-06-19 | 大连理工大学 | Continuous self-driven miniature ship |
Non-Patent Citations (1)
| Title |
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| 自驱动迷你马达及其在超分子自组织与能量转换中的应用;肖萌等;《中国科学:化学》;20170120(第01期);全文 * |
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| CN114352457A (en) | 2022-04-15 |
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