CN116717441A - Vibrating piece structure for vibration deicing - Google Patents
Vibrating piece structure for vibration deicing Download PDFInfo
- Publication number
- CN116717441A CN116717441A CN202310916812.XA CN202310916812A CN116717441A CN 116717441 A CN116717441 A CN 116717441A CN 202310916812 A CN202310916812 A CN 202310916812A CN 116717441 A CN116717441 A CN 116717441A
- Authority
- CN
- China
- Prior art keywords
- metal sheet
- deicing
- vibration
- vibrating reed
- vibrating piece
- 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
- 239000002184 metal Substances 0.000 claims abstract description 131
- 235000014676 Phragmites communis Nutrition 0.000 claims description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000002966 varnish Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000003075 superhydrophobic effect Effects 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000009746 freeze damage Effects 0.000 description 1
- 238000010438 heat treatment Methods 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
- 239000003973 paint Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing 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: a first metal sheet and a second metal sheet; the first metal sheet and the second metal sheet are attached and aligned in parallel, and the first metal sheet and the second metal sheet are spirally wound; the first metal sheet and the second metal sheet are insulated from each other; the first metal sheet and the second metal sheet are used for alternately energizing so that one acts as a driving member to drive the other to vibrate. In this scheme, thereby through the alternative drive of first sheetmetal and second sheetmetal, thereby can realize that the two is vibration in turn realizes that the two is as the vibrating piece, compare in the structure of current layering formula covering and coil, thereby can simplify deicing structure, thereby realize more succinct design and play the effect of being convenient for more on-the-spot laying when guaranteeing that deicing effect is good, effectively solve the problem that current solution to aerogenerator blade icing problem can't compromise deicing effect good, make things convenient for engineering application and arrange the convenience.
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 skin and the coil are generally in a multi-layer structure, the structure is complex, and the arrangement in the practical application process is inconvenient.
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 of the wind driven generator blade cannot achieve good deicing effect, is convenient for engineering application and is convenient to arrange.
To achieve the above object, the present application provides a vibrating reed structure for vibration deicing, comprising: a first metal sheet and a second metal sheet;
the first metal sheet and the second metal sheet are attached and aligned in parallel, and the first metal sheet and the second metal sheet encircle to form a spiral shape;
the first metal sheet and the second metal sheet are connected in an insulating manner;
the first metal sheet and the second metal sheet are used for alternately energizing so that one acts as a driving member to drive the other to vibrate.
Further, the first metal sheet and the second metal sheet are identical in structural dimension.
Further, the cross sections of the first metal sheet and the second metal sheet are all in a bevel shape.
Further, the folding angles of the first metal sheet and the second metal sheet are 90 degrees.
Further, the first metal sheet and the second metal sheet are connected in an insulating manner by coating insulating paint.
Further, the total length of the structure formed by the first metal sheet and the second metal sheet is L;
the widths of the first metal sheet and the second metal sheet are d;
the relationship between L and d is: l/d is more than or equal to 0.
Further, the first metal sheet and the second metal sheet are both laid on the extension piece.
Further, the extension piece is a polytetrafluoroethylene film.
From the above technical solution, the present application provides a vibrating piece structure for vibration deicing, including: a first metal sheet and a second metal sheet; the first metal sheet and the second metal sheet are attached and aligned in parallel, and the first metal sheet and the second metal sheet encircle to form a spiral shape; the first metal sheet and the second metal sheet are mutually insulated; the first metal sheet and the second metal sheet are used for alternately energizing so that one serves as a driving member and drives the other to vibrate.
In this scheme, thereby through the alternative drive of first sheetmetal and second sheetmetal, thereby can realize that the two is vibration in turn realizes that the two is as the vibrating piece, compare in the structure of current layering formula covering and coil, thereby can simplify deicing structure, thereby realize more succinct design and play the effect of being convenient for more on-the-spot laying when guaranteeing that deicing effect is good, effectively solve the problem that current solution to aerogenerator blade icing problem can't compromise deicing effect good, make things convenient for engineering application and arrange the convenience.
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;
fig. 2 is a side view of a first metal sheet and a second metal sheet 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.
Referring to fig. 1, a vibrating reed structure for vibration deicing according to an embodiment of the present application includes: a first metal sheet 1 and a second metal sheet 2; the first metal sheet 1 and the second metal sheet 2 are attached and aligned in parallel, and the first metal sheet and the second metal sheet are spirally wound; the first metal sheet 1 and the second metal sheet 2 are connected in an insulating manner; the first metal sheet 1 and the second metal sheet 2 are used for alternately energizing to make one as a driving member to drive the other to vibrate.
The first metal sheet 1 and the second metal sheet 2 mutually encircle to form a planar double-spiral structure, so that the two can alternately become a driving sheet and a vibrating piece; that is, when the first metal sheet 1 is electrified, the first metal sheet 1 is used as a driving sheet, and the second metal sheet 2 is used as a vibrating piece; when the second metal plate 2 is energized, the second metal plate 2 serves as a driving plate, and the first metal plate 1 serves as a vibrating plate.
Specifically, the head end and the tail end of the first metal sheet 1 are DS and DE, respectively; the head end and the tail end of the second metal sheet 2 are VS and VE respectively; DS-DE, VS-VE constitute the connection section of two sets of circuits, namely connect the input and output of power respectively.
When the deicing operation is carried out, after the DS-DE and the VS-VE are connected with the input end and the output end of the power supply, pulse currents are alternately input to the first metal sheet 1 and the second metal sheet 2, and when one is input with the current, the other forms eddy current, so that the deicing can be carried out through the magnetic field force between the eddy current and the input current.
According to the embodiment, the first metal sheet 1 and the second metal sheet 2 are arranged in the spiral shape, so that a larger magnetic field can be realized under the condition of the same current, the deicing effect is improved, and meanwhile, the first metal sheet 1 and the second metal sheet 2 jointly form the skin so as to directly cover the blade without additionally arranging a coil, so that the whole structure can be simplified.
In a further improved embodiment, the first metal sheet 1 and the second metal sheet 2 are identical in structural dimension, so that the magnetic field formed by alternately energizing the two metal sheets is balanced and stable.
In another embodiment, referring to fig. 1 and 2, the cross sections of the first metal sheet 1 and the second metal sheet 2 are both folded.
Specifically, in this embodiment, the first metal sheet 1 and the second metal sheet 2 are both non-planar, but have a folded angle shape with folded angles, so that the cross sections of the first metal sheet 1 and the second metal sheet 2 that are attached in parallel are wavy, which is conducive to generating an impetus forming an included angle with the plane where the first metal sheet 1 and the second metal sheet 2 are located when the first metal sheet 1 and the second metal sheet 2 are alternately electrified, and realizing ice coating vibration falling on the first metal sheet 1 and the second metal sheet 2.
As a further improvement, the folding angles of the first metal sheet 1 and the second metal sheet 2 are 90 degrees, so that the vibration force generated by the first metal sheet 1 and the second metal sheet is perpendicular to the plane where the first metal sheet and the second metal sheet are located, and a better deicing effect is achieved.
As an embodiment, the first metal sheet 1 and the second metal sheet 2 are connected by insulating by applying an insulating varnish.
In one embodiment, the total length of the structure formed by the first metal sheet 1 and the second metal sheet 2 is L; the widths of the first metal sheet 1 and the second metal sheet 2 are d; the relationship between L and d is: l/d is more than or equal to 10; namely, the number of turns N of the coil structure formed by the first metal sheet 1 and the second metal sheet 2 is more than 5.
Specifically, if the number of coils is small, the generated magnetic field is small; the number of turns of the coil is large, the magnetic field increases, but the width of the sheet needs to be reduced to increase the processing difficulty.
The coil is passed through a pulse current of amplitude I, the magnetic field force being calculated to have values of about 0.82 mu at various locations within the helix 0 I 2 *N/d～1.95μ 0 I 2 *N/d(μ 0 Is the permeability in vacuum, 4 n multiplied by 10 -7 H/m; i and d are amperes and meters manufactured by International units; n is the number of turns, i.e., the number, of coils); empirically, the maximum instantaneous magnetic field force generated is greater than 1kN to provide the desired deicing effect. Typically the pulse current amplitude is 1000A, so that at d of 0.05 meters, 1030N can be reached only if N is greater than 5.
Further, the first metal sheet 1 and the second metal sheet 2 are both laid on the extension piece. The extension piece is a polytetrafluoroethylene film so as to ensure that the ice layer cannot enter the lower part of the skin.
In practical application, because the driving piece and the vibrating piece form an included angle in space, the deicing effect is best when the deicing is required to be carried out under the condition that the ice layer has a certain thickness but is not too thick, otherwise, the ice layer is covered in the area between the vibrating piece and the driving piece, and the vibration is difficult to occur. It is therefore preferable to begin deicing when the thickness of the layer of ice reaches about 0.35 d. Correspondingly, the first metal sheet 1 and the second metal sheet 2 can be provided with ice layer thickness sensors, and when the thickness of the ice layer is more than or equal to 0.35d, the first metal sheet 1 and the second metal sheet 2 are electrified alternately through the controller.
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 (8)
1. A vibrating reed structure for vibration deicing, characterized by comprising: a first metal sheet (1) and a second metal sheet (2);
the first metal sheet (1) and the second metal sheet (2) are attached and aligned in parallel, and the first metal sheet and the second metal sheet are spirally wound;
the first metal sheet (1) and the second metal sheet (2) are insulated from each other;
the first metal sheet (1) and the second metal sheet (2) are used for alternately energizing so that one serves as a driving member to drive the other to vibrate.
2. Vibrating reed structure for vibratory deicing according to claim 1, characterized in that both the first metal sheet (1) and the second metal sheet (2) are of identical structural dimensions.
3. Vibrating reed structure for vibratory deicing as in claim 2, characterized in that the cross section of the first metal sheet (1) and the second metal sheet (2) are both dog-ear shaped.
4. A vibrating reed structure for vibration deicing according to claim 3, characterized in that the folding angle of the first metal sheet (1) and the second metal sheet (2) is 90 °.
5. Vibrating reed structure for vibratory deicing according to claim 1, characterized in that the first metal sheet (1) and the second metal sheet (2) are connected insulated by applying an insulating varnish.
6. Vibrating piece structure for vibratory deicing according to claim 1, characterized in that the total length of the structure consisting of the first metal sheet (1) and the second metal sheet (2) is L;
the widths of the first metal sheet (1) and the second metal sheet (2) are d;
the relationship between L and d is: l/d is more than or equal to 10.
7. Vibrating reed structure for vibratory deicing according to claim 1, characterized in that the first metal sheet (1) and the second metal sheet (2) are both laid on an extension.
8. Vibrating reed structure for vibratory deicing of claim 7, wherein said extension is a polytetrafluoroethylene film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310916812.XA CN116717441A (en) | 2023-07-25 | 2023-07-25 | Vibrating piece structure for vibration deicing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310916812.XA CN116717441A (en) | 2023-07-25 | 2023-07-25 | Vibrating piece structure for vibration deicing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116717441A true CN116717441A (en) | 2023-09-08 |
Family
ID=87873620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310916812.XA Pending CN116717441A (en) | 2023-07-25 | 2023-07-25 | Vibrating piece structure for vibration deicing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116717441A (en) |
-
2023
- 2023-07-25 CN CN202310916812.XA patent/CN116717441A/en active Pending
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