CN116696692A - Vibrating piece structure for vibration deicing - Google Patents
Vibrating piece structure for vibration deicing Download PDFInfo
- Publication number
- CN116696692A CN116696692A CN202310916797.9A CN202310916797A CN116696692A CN 116696692 A CN116696692 A CN 116696692A CN 202310916797 A CN202310916797 A CN 202310916797A CN 116696692 A CN116696692 A CN 116696692A
- Authority
- CN
- China
- Prior art keywords
- fins
- deicing
- fin
- keels
- keel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241000220317 Rosa Species 0.000 claims abstract description 10
- 235000014676 Phragmites communis Nutrition 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003075 superhydrophobic effect Effects 0.000 description 3
- 239000012634 fragment Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009746 freeze damage Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/40—Ice detection; De-icing means
-
- 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
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The application relates to the technical field of fan blade deicing, and particularly discloses a vibrating piece structure for vibration deicing, which comprises the following components: keels and fin groups; the fin group comprises a plurality of fins; the fins are in a rose shape; the fins are arranged on the keels at equal intervals in a straight line and are symmetrically arranged along the length direction of the keels. According to the scheme, the fins which are symmetrically distributed along the straight lines of the keels can cover most areas of the edges of the blades and increase vibration amplitude to improve deicing effect, engineering application is facilitated, and the problems that an existing solution to the problem of icing of the blades of the wind driven generator cannot achieve good deicing effect, engineering application is facilitated and the deicing area can be covered is effectively solved.
Description
Technical Field
The application relates to the technical field of fan blade deicing, in particular to a vibrating piece structure for vibration deicing.
Background
Most of regions with rich south wind resources in China are near mountains and lakes with high altitudes, so that when the south is in a low-temperature and high-humidity environment such as winter climate, the regions are easily subjected to low-temperature freeze injury weather, and the blades of the wind driven generator are covered with ice.
The icing phenomenon of the wind driven generator blade can influence the aerodynamic profile of the blade, unbalanced load can be caused by uneven icing mass distribution, further additional load and additional vibration of the wind driven generator are caused, the service lives of the blade and the unit are shortened, unit faults are easily caused, and the generated energy of a wind power generation field is influenced. Meanwhile, the ice-hanging operation of the blades of the wind driven generator can reduce the generated energy of the wind driven generator by 10 to 20 percent, so that the operation and maintenance cost of the wind power plant is increased, and even the local damage or the whole collapse of the wind tower can be caused. In addition, the blade is thrown ice and can also cause great hidden danger to personnel safety. The problem of icing of wind turbine blades has become a concern for wind turbine units in icing areas.
At present, the solution to the problem of icing of the wind driven generator blade mainly comprises a super-hydrophobic coating, thermal deicing and electric pulse deicing.
The super-hydrophobic coating is coated on the surface of the blade by adopting a super-hydrophobic material, so that the aim of preventing the ice layer from being covered is fulfilled. The anti-icing operation is simple and convenient, but the anti-icing effect and the anti-aging property are poor, and engineering application is difficult to realize.
The scheme of thermal deicing is that electric heating anti-icing deicing is performed by utilizing a wind driven generator to generate power, the deicing water in the deicing process of the method possibly refrigerates when reaching an unheated low-temperature surface, more ice coating is formed on the periphery of a heating area, and the scheme of thermal deicing is that a high-temperature layer is formed on the surface of a blade by utilizing hot air to realize anti-icing and deicing, but the requirement on the power of a power supply is high, the deicing of a blade area which is far away from a fan tower is difficult to realize, and the coverage deicing area is small.
The scheme of electric pulse deicing is generally that a pulse coil is arranged in a skin, and the pulse coil discharges when deicing is needed, so that a magnetic field is formed around the pulse coil; the time-varying magnetic field creates eddy currents in the skin, thereby generating a pulsed force that removes the ice layer vibration. In the existing electric pulse deicing scheme, the skins are generally arranged in a mode of covering the edges of the blades in a whole, so that the vibration amplitude of the skins is small, and further the deicing effect is poor.
Disclosure of Invention
In view of the above, the application aims to provide a vibrating reed structure for vibration deicing, which is used for solving the problems that the existing solution to the problem of icing on the wind driven generator blade cannot achieve good deicing effect, is convenient for engineering application and can cover a large deicing area.
To achieve the above object, the present application provides a vibrating reed structure for vibration deicing, comprising: keels and fin groups;
the fin group comprises a plurality of fins;
the fins are in a rose shape;
the fins are arranged on the keels at equal intervals in a straight line and are symmetrically arranged along the length direction of the keels.
Further, the fin group includes two groups;
the two groups of fins are respectively arranged on the top surface and the bottom surface of the keel.
Further, the fins on the two fin groups are overlapped and staggered along the length direction of the keels.
Further, the edge curve equation of the fin is: ρ=cos (2θ), where ρ is the width of the fin and θ takes a value from-pi/4 to pi/4.
Further, the tip vertexes of the fins are positioned on the central line of the keels along the length direction;
the width d of the keel is 1/5 to 1/3 times of rho.
Further, the width d of the keels is 1/4 times of rho.
Further, the center distance between the fins and the fins adjacent to each other along the length direction of the keel 1 is 1/2h to 3/4h;
h is the length of the fin.
Further, the center distance between the fins and the fins on the other adjacent fin group is 2/3h.
Further, the length h of the fin is the width ρ of the finMultiple times.
Further, the fins are aluminum sheets.
From the above technical solution, the present application provides a vibrating piece structure for vibration deicing, including: keels and fin groups; the fin group comprises a plurality of fins; the fins are in a rose shape; the fins are arranged on the keels at equal intervals in a straight line and are symmetrically arranged along the length direction of the keels.
According to the scheme, the fins which are symmetrically distributed along the straight lines of the keels can cover most areas of the edges of the blades and increase vibration amplitude to improve deicing effect, engineering application is facilitated, and the problems that an existing solution to the problem of icing of the blades of the wind driven generator cannot achieve good deicing effect, engineering application is facilitated and the deicing area can be covered is effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a top view of a vibrating reed structure for vibration deicing according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments disclosed in the specification without making any inventive effort, are intended to be within the scope of the application as claimed.
In the description of the embodiments of the present application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.
Referring to fig. 1, a vibrating reed structure for vibration deicing according to an embodiment of the present application includes: the keel 1 and the fin group; the fin group includes a plurality of fins 2; the fins 2 are in a rose shape; the fins 2 are arranged on the keel 1 at regular intervals in a straight line and are symmetrically arranged along the length direction of the keel 1.
For convenience of explanation, the present application is described with the keel 1 placed along the x-axis direction in fig. 1; that is, the x-axis direction in fig. 1 is the longitudinal direction, and the y-axis direction is the width direction.
When in installation, the length direction of the keel 1 can be aligned with the edge of the blade along the line, and then the fins 2 on two sides of the keel 1 are respectively arranged on two sides of the blade.
The fact that the fins 2 are in a rose shape means that the shape of the fins 2 is similar to that of rose petals. Specifically, coils can be arranged below the keels 1 and the fin groups; through the linear fin 2 of multi-disc rose along the length direction discharge of fossil fragments 1, on the one hand can increase the vibration scope, on the other hand compares in the skin of whole piece formula can effectively increase vibration amplitude to promote deicing effect.
Meanwhile, the existing integral skin needs to be provided with a longer current path, so that the eddy current on the skin covers the whole skin, the current loss is larger, and the current is reduced. In this solution, with a plurality of fins 2 protruding with respect to the keel 1, most of the eddy currents can be confined within the fins 2, thereby reducing eddy current losses and providing a larger magnetic field.
In the scheme, the fins 2 can be aluminum sheets with the thickness of 2mm; the icing position of the fan blade is generally at the root, so that the keel 1 can be arranged at the corresponding icing position, and the length of the keel 1 is equivalent to the icing length.
In one embodiment, the fin sets include two sets; the two groups of fins are respectively arranged on the top surface and the bottom surface of the keel 1.
By arranging the two groups of fins, two adjacent fins in the same group of fins can be arranged without being connected, so that the production difficulty in practical application is reduced.
In particular, in the process of mounting the keel 1 and the fins 2 to the blade after production, it is desirable to make the gap between the fins 2 and the fins 2 as small as possible to avoid dropping of the ice pieces or liquid from the gap between the fins 2 after icing. In this scheme, through setting up two sets of fin groups, can avoid being arranged in the interval undersize and promote the production degree of difficulty in the fin group of fossil fragments 1 same one side.
As a further improvement, in order to avoid excessive gaps between adjacent fins 2 after installation, in this embodiment, the fins 2 on one group of fin groups and the fins 2 on the other group of fin groups are overlapped and staggered along the length direction of the keel 1.
In one embodiment, the edge curve equation for fin 2 is: ρ=cos (2θ), where ρ is the width of the fin 2 and θ takes a value of-pi/4 to pi/4.
Specifically, the curve equation commonly used for rose lines is: ρ=acos (nθ); where a is a coefficient corresponding to the maximum length of ρ; θ corresponds to the opening angle of the rose line shape; n is a natural number. Values common to theta are-pi/6 to pi/6; however, the inventors found that when θ exceeds-pi/4 to pi/4, the fin 2 is too narrow in shape, and therefore a large number is required to be manufactured. According to the length of ice coating on the existing fan blade in the practical application process, the inventor selects a=1 and n=2.
Calculation and experiment were performed according to the edge curve equation of the fin 2, and the length h of the fin 2 was the width ρ of the fin 2When the vibration is doubled, a better vibration effect can be obtained.
In the process ofWhen θ is.+ -. Arctan (sqrt (5)/5).
In a more specific embodiment, the center-to-center distance between the fins 2 and the fins 2 adjacent in the length direction of the keel 1 is 1/2h to 3/4h; h is the length of the fin 2.
Specifically, the fins 2 and the fins 2 adjacent to each other in the longitudinal direction of the runner 1 may belong to the same fin group or may belong to different fin groups. In this embodiment, two fins 2 adjacent in the longitudinal direction of the keel 1 are respectively from two fin groups on the top and bottom surfaces of the keel 1.
In application, the inventor finds that the proper distance between two fins 2 can be kept when the center distance between two adjacent fins 2 along the length direction of the keel 1 is 1/2h to 3/4h, the risk that gaps between two adjacent fins 2 are too large and ice is covered at the gaps is avoided, and meanwhile, the situation that the gaps between two adjacent fins 2 are too small and the fins 2 are arranged too densely can be avoided.
Preferably, in one embodiment, the center-to-center distance between the fins 2 and the fins 2 on the other adjacent fin group is 2/3h, so that the arrangement of the fins 2 is not too dense, and no hole gap exists between the adjacent fins 2.
On the basis of the embodiment, in the application, the end vertexes of the fins 2 are positioned on the central line of the keel 1 along the length direction; the width d of the keel 1 is related to ρ and is 1/5 to 1/3 times that of ρ.
Preferably, the width d of the keel 1 is 1/4 times p.
Specifically, after the fins 2 are mounted on the runner 1, the overall width of the structure is 2ρ. When the ratio of d to rho is too large, the fins 2 need to extend out of the keels 1 for a larger length to ensure the vibration amplitude; the ratio of d to ρ is too small, so that the constraint on the fin 2 is easily lost, and after multiple vibration, the elastic deformation is likely to be converted into plastic deformation, so in the embodiment, d=1/4ρ is taken, and the constraint force of the keel 1 on the fin 2 can be ensured while a good vibration effect is achieved. Wherein the fins 2 can be mounted on the keel 1 by means of riveting.
In the above embodiment, ρ may be set according to the maximum width of the actual ice-coating situation; or fixing a rho value, and arranging a corresponding induction detection device on the blade, and starting the vibration deicing device to deicing when the icing width of the blade is larger than rho.
While the application has been described in detail with reference to the examples, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the application may be modified or equivalents may be substituted for elements thereof, and that any modifications, equivalents, improvements or changes will fall within the spirit and principles of the application.
Claims (10)
1. A vibrating reed structure for vibration deicing, characterized by comprising: the keels (1) and the fin groups;
the fin group comprises a plurality of fins (2);
the fins (2) are in a rose shape;
the fins (2) are arranged on the keels (1) at equal intervals in a straight line, and are symmetrically arranged along the length direction of the keels (1).
2. Vibrating piece structure for vibratory deicing of claim 1, wherein said fin group comprises two groups;
the two groups of fins are respectively arranged on the top surface and the bottom surface of the keel (1).
3. Vibrating reed structure for vibration deicing according to claim 2, characterized in that the fins (2) on two of the fin groups are overlapped and staggered along the length direction of the keel (1).
4. Vibrating reed structure for vibratory deicing as in claim 1, characterized in that the edge curve equation of the fin (2) is: ρ=cos (2θ), where ρ is the width of the fin (2) and θ takes a value of-pi/4 to pi/4.
5. Vibrating reed structure for vibratory deicing as in claim 4, characterized in that the end apex of the fin (2) is located on the center line of the keel (1) in length direction;
the width d of the keel (1) is 1/5 to 1/3 times of rho.
6. Vibrating reed structure for vibratory deicing as in claim 5, characterized in that the width d of the keel (1) is 1/4 times p.
7. Vibrating reed structure for vibratory deicing according to any one of claims 4 to 6, characterized in that the center-to-center distance between the fin (2) and the fin (2) adjacent in the length direction of the keel 1 is 1/2h to 3/4h;
h is the length of the fin (2).
8. Vibrating reed structure for vibration deicing according to claim 7, characterized in that the centre-to-centre distance between the fins (2) and the fins (2) on the adjacent other set of fins is 2/3h.
9. Vibrating reed structure for vibratory deicing according to claim 7, characterized in that the length h of the fin (2) is v 6/9 times the width ρ of the fin (2).
10. Vibrating reed structure for vibratory deicing as in claim 1, wherein said fins (2) are aluminum sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310916797.9A CN116696692A (en) | 2023-07-25 | 2023-07-25 | Vibrating piece structure for vibration deicing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310916797.9A CN116696692A (en) | 2023-07-25 | 2023-07-25 | Vibrating piece structure for vibration deicing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116696692A true CN116696692A (en) | 2023-09-05 |
Family
ID=87834205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310916797.9A Pending CN116696692A (en) | 2023-07-25 | 2023-07-25 | Vibrating piece structure for vibration deicing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116696692A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117905643A (en) * | 2024-03-18 | 2024-04-19 | 国网山东省电力公司高青县供电公司 | Wind driven generator suitable for cold climate |
-
2023
- 2023-07-25 CN CN202310916797.9A patent/CN116696692A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117905643A (en) * | 2024-03-18 | 2024-04-19 | 国网山东省电力公司高青县供电公司 | Wind driven generator suitable for cold climate |
| CN117905643B (en) * | 2024-03-18 | 2024-05-24 | 国网山东省电力公司高青县供电公司 | Wind driven generator suitable for cold climate |
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