CN106949022A - Recoverable electro-heat deicing aero-generator rotor blade and preparation method thereof - Google Patents
Recoverable electro-heat deicing aero-generator rotor blade and preparation method thereof Download PDFInfo
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- CN106949022A CN106949022A CN201710329882.XA CN201710329882A CN106949022A CN 106949022 A CN106949022 A CN 106949022A CN 201710329882 A CN201710329882 A CN 201710329882A CN 106949022 A CN106949022 A CN 106949022A
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- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 201
- 239000004917 carbon fiber Substances 0.000 claims abstract description 201
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 201
- 239000004744 fabric Substances 0.000 claims abstract description 50
- 230000008439 repair process Effects 0.000 claims abstract description 44
- 238000005485 electric heating Methods 0.000 claims description 54
- 239000011521 glass Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 8
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- 238000010438 heat treatment Methods 0.000 abstract description 19
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- 238000004519 manufacturing process Methods 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000009755 vacuum infusion Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
Electro-heat deicing aero-generator rotor blade and preparation method thereof can be repaired the invention provides one kind, the electrothermal chip of repairing can repair carbon fiber ice-melt electrothermal chip by being installed in blade, realize the electro-heat deicing function of blade, simultaneously, the mode intersected by using carbon fiber bundle longitude and latitude prepares carbon fiber ice-melt electrothermal chip, not only the current density by electrothermal chip is adjusted by adjusting the density of carbon fiber bundle, so as to adjust the heating-up temperature of electrothermal chip, simultaneously bi-directionally the arrangement of fenestral fabric make it that warp-wise carbon fiber is connected with each other by broadwise carbon fiber bundle, one is formed in electric property, anti-damage performance is strong, when certain carbon fiber bundle breaks down, the heating property of electro-heat deicing chip is not influenceed；In addition, when some warp-wise carbon fiber bundles disconnect, the warp-wise carbon fiber of whole electrothermal chip can be connected by broadwise carbon fiber bundle, can effectively reduce no power scope, reduce athermic area, it is ensured that the ice-melt effect of electrothermal chip.
Description
Technical field
The invention belongs to new energy technology and apparatus field, and in particular to a kind of recoverable electro-heat deicing wind-driven generator
Rotor blade and preparation method thereof.
Background technology
In face of the increasing pressure of population, people increasingly pay close attention to energy problem, and the new energy such as wind energy, solar energy is
It is increasingly becoming the important way that people solve energy problem.In wind power generation field, common equipment is wind-driven generator, generator
Rotor blade is the energy resource collecting power set of wind-driven generator, and therefore, the care and maintenance of blade is most important.
Wind-force hair rotor blade is used for gathering wind energy, then must be exposed in natural environment, therefore, blade is in design
When, not only to consider the influence of self-operating mode, it is also necessary to consider the influence of environment.For example, occurrence of large-area in 2008
After freezing disaster, heavy losses are caused to many industries, wind power industry is no exception.For prevention freezing disaster, every profession and trade
A variety of de-icing technologies start to research and develop and applied, and ice-melt is beaten including artificial, and Tu layers of the macromolecule such as silicone oil, nano material melts
Ice, electro-heat deicing technology etc., wherein electro-heat deicing technology are a kind of more practical de-icing technologies.
The Chinese patent of Patent No. 201210390773.6, freeze the damage caused according to aero-generator rotor blade
Lose, a kind of aero-generator rotor blade with electro-heat deicing apparatus is disclosed, by the outer surface of blade body, interior table
Set on face and/or in interlayer and freeze or remove on the deicing device for converting electrical energy into heat energy, prevention blade of wind-driven generator
The ice that blade of wind-driven generator surface has been tied.
The Chinese patent of Patent No. 201410025123.0, discloses a kind of wind-driven generator electro-heat deicing rotor leaf
Piece, electrothermal chip and shaped device and method, specifically disclose the structure and former and method of electrothermal chip, electrothermal chip
Structure be on glass fabric plus seam warp-wise distribution strip carbon fiber bundle constitute, pass through carbon fiber bundle electrified regulation blade
Blade surface can be prevented to freeze and the ice that blade surface has been tied can be melted to reach.Fig. 1 is electric heating described in prior art
The schematic diagram that ice-melt aero-generator rotor blade cross-section structure and concentrated wear influence on area of heat-supply service.As shown in figure 1, the knot
Structure carbon fiber bundle only arranges there is certain distance, every carbon fiber between neighbouring two carbon fiber bundles in the warp-wise of glass fabric
Beam is independent, is mutually not turned between neighbouring carbon fiber bundle.Due in unidirectional list structure every carbon fiber bundle be it is independent,
Mutually it is not turned on, once certain root carbon fiber bundle breaks down, is disconnected if any a point, just in electric property with other carbon fiber bundles
Whole piece carbon fiber bundle can be influenceed non-conductive, the heating property of electrothermal chip is had a strong impact on, therefore can not be to bag gas, dry spot in blade
Repaired etc. defect.
The content of the invention
The technical problem to be solved in the present invention is that the electrothermal chip in prior art wind generator amature blade can not
The defects such as bag gas, dry spot are repaired, a kind of recoverable electro-heat deicing aero-generator rotor blade and preparation method thereof is proposed, adopts
The mode intersected with carbon fiber bundle longitude and latitude prepares electrothermal chip, so that the aero-generator rotor blade prepared not only can be with
The heating ice-melt function of regioselectivity is realized, while the reparation of the defect such as bag gas, dry spot in blade can be carried out.
According to an aspect of the invention, there is provided a kind of recoverable aero-generator rotor blade, the leaf packet
Include：Carbon fiber electric heating ice-melt chip can be repaired.
In such scheme, the blade also includes：Inside panel frp layer, core, three axle glass-fiber-fabrics, two axle glass fibres
Layer of cloth, exterior skin frp layer；Wherein, the carbon fiber electric heating ice-melt chip of repairing is positioned at three axle glass-fiber-fabrics, two axle glass
Between scrim cloth.
In such scheme, the carbon fiber electric heating ice-melt chip structure of repairing is, on glass fabric, with longitude and latitude
The carbon fiber bundle of both direction arrangement, is mutual conduction between warp-wise and broadwise carbon fiber bundle.
In such scheme, the carbon fiber bundle of longitude and latitude both direction arrangement, further for：
The warp-wise carbon fiber bundle that one interlamellar spacing is fixed is located on the broadwise carbon fiber bundle that an interlamellar spacing is fixed；
Or,
The broadwise carbon fiber bundle that one interlamellar spacing is fixed is located on the warp-wise carbon fiber bundle that an interlamellar spacing is fixed；
Or,
Warp-wise carbon fiber bundle and broadwise carbon fiber bundle cross arrangement, form a cross one another net of each node.
According to another aspect of the present invention, carbon fiber electric heating ice-melt chip preparation method can be repaired by additionally providing one kind,
Methods described comprises the following steps：
Preparation can repair carbon fiber electric heating ice-melt chip；
Design can repair distribution area and position of the carbon fiber electric heating ice-melt chip in aero-generator rotor blade；
By it is described repair carbon fiber electric heating ice-melt chip and be fixed on be provided with the core of three axle glass fabrics；
Aero-generator rotor blade make mould according to exterior skin frp layer, two axle glass fabrics, can repair
Carbon restoration fiber electric heating ice-melt chip, three axle glass fabrics, core, the order arrangement material of inside panel frp layer, using true
Empty instillation process formed blades.
In such scheme, the preparation can repair carbon fiber electric heating ice-melt chip, further for：On glass fabric,
Carbon fiber bundle, mutual conduction between warp-wise and broadwise carbon fiber bundle are arranged in longitude and latitude both direction.
In such scheme, the carbon fiber bundle of longitude and latitude both direction arrangement, further for：
The warp-wise carbon fiber bundle that one interlamellar spacing is fixed is located on the broadwise carbon fiber bundle that an interlamellar spacing is fixed；
Or,
The broadwise carbon fiber bundle that one interlamellar spacing is fixed is located on the warp-wise carbon fiber bundle that an interlamellar spacing is fixed；
Or,
Warp-wise carbon fiber bundle and broadwise carbon fiber bundle cross arrangement, form a cross one another net of each node.
Invention has the advantages that：
The present embodiment repairs electro-heat deicing aero-generator rotor blade, passes through and carbon fiber ice-melt is installed in blade
Electrothermal chip, realizes the electro-heat deicing function of aero-generator rotor blade, meanwhile, intersect by using carbon fiber bundle longitude and latitude
Mode prepares carbon fiber ice-melt electrothermal chip, on the one hand adjusts the electricity by electrothermal chip by adjusting the density of carbon fiber bundle
Current density, so as to adjust the heating-up temperature of electrothermal chip, the arrangement of the two-way fenestral fabric of still further aspect make it that warp-wise carbon is fine
Dimension is connected with each other by broadwise carbon fiber bundle, and one is formed in electric property, and anti-damage performance is strong, if certain carbon fiber bundle goes out
Existing failure, such as in warp-wise somewhere, carbon fiber bundle disconnects, and electric current can bypass breakpoint in gap by broadwise carbon fiber bundle, after
Continue and circulated in the root carbon fiber bundle, have substantially no effect on the electric property of ice-melt electrothermal chip, ice-melt heating core is not just influenceed yet
The heating property of piece.When some warp-wise carbon fiber bundles disconnect, the warp-wise carbon fiber of whole electrothermal chip can pass through broadwise
Carbon fiber bundle is connected, and can effectively control no power scope, reduces athermic area, it is ensured that the ice-melt effect of electrothermal chip.
Brief description of the drawings
Fig. 1 be described in prior art in electro-heat deicing aero-generator rotor blade electrothermal chip carbon fiber bundle layout and
The schematic diagram that concentrated wear influences on area of heat-supply service；
Fig. 2 can repair electro-heat deicing aero-generator rotor blade cross-sectional view for first embodiment of the invention；
Fig. 3 can repair electrothermal chip carbon fiber in electro-heat deicing aero-generator rotor blade for first embodiment of the invention
The schematic diagram that beam is laid out and concentrated wear influences on area of heat-supply service；
Fig. 4 can repair electro-heat deicing wind-force hair for that can repair carbon fiber electric heating ice-melt chip in first embodiment of the invention
Connection diagram in rotor blade；
Fig. 5 be second embodiment of the invention in can repair schematic layout pattern of the carbon fiber electric heating ice-melt chip on blade；
Fig. 6 be second embodiment of the invention in can repair vacuum infusion molding schematic diagram in aero-generator rotor blade.
Description of reference numerals：
1- inside panel frp layers；2- cores；The axle glass-fiber-fabrics of 3- tri-；4- can repair carbon fiber electric heating ice-melt chip；5- bis-
Axle fiberglass cloth；6- exterior skin frp layers；7- release materials；8- pressure-sensitive tapes；9- bands；10- connecting tubes；
11- mozzles；12- flow-guiding screens；13- release cloths；14- vacuum films bag；41- turns on metal bolts；42- bolt through-holes；51- leaves
Tip.
Embodiment
By reference to one exemplary embodiment, present invention problem, technical scheme and advantage will be illustrated.However, this
Invention is not limited to one exemplary embodiment as disclosed below；It can be realized by multi-form.Specification
Essence be only to aid in various equivalent modifications Integrated Understanding the present invention detail.
The aero-generator rotor blade worked under natural environment, it is protected from environmental larger.It is harsh in face of icing etc.
Working environment, the present invention proposes a kind of recoverable electro-heat deicing aero-generator rotor blade, passes through and installed in blade
Carbon fiber ice-melt electrothermal chip, realizes the electro-heat deicing function of aero-generator rotor blade, meanwhile, by using carbon fiber bundle
The mode that longitude and latitude intersects prepares carbon fiber ice-melt electrothermal chip, is on the one hand adjusted by adjusting the density of carbon fiber bundle by electricity
The current density of hot chip, so as to adjust the heating-up temperature of electrothermal chip, the arrangement of the two-way fenestral fabric of still further aspect makes
Obtain warp-wise carbon fiber to be connected with each other by broadwise carbon fiber bundle, one is formed in electric property, anti-damage performance is strong, if certain
Carbon fiber bundle breaks down, and such as in warp-wise somewhere, carbon fiber bundle disconnects, and electric current can pass through broadwise carbon fiber bundle in gap
Breakpoint is bypassed, continues to circulate in the root carbon fiber bundle, has substantially no effect on the electric property of ice-melt electrothermal chip, also just do not influence
The heating property of ice-melt electrothermal chip.It therefore, it can by way of punching, to being located at the bag inside electrothermal chip in blade
The defects such as gas, dry spot are exposed and further repaired.
Below by specific embodiment, the invention will be further described.
First embodiment
A kind of recoverable electro-heat deicing aero-generator rotor blade is present embodiments provided, the blade includes：Can
Repair carbon fiber electric heating ice-melt chip (abbreviation electrothermal chip).
The blade also includes：Inside panel frp layer, core, three axle glass-fiber-fabrics, two axle fiberglass cloths, exterior skin
Frp layer.
Fig. 2 is the recoverable electro-heat deicing aero-generator rotor blade cross-sectional view of the embodiment of the present invention.
As shown in Fig. 2 the recoverable electro-heat deicing aero-generator rotor blade includes successively：Inside panel frp layer 1, core
2nd, three axle glass-fiber-fabrics 3, carbon fiber electric heating ice-melt chip 4, two axle fiberglass cloths 5, exterior skin frp layer 6 can be repaired.
Wherein, the core 2 is balse timber or PVC foams.In the inside panel frp layer 1 and exterior skin glass
Between steel layer 6, set gradually core 2, three axle glass-fiber-fabrics 3, carbon fiber electric heating ice-melt chip 4 and two axle glass fabrics can be repaired
Layer 5.The thickness of carbon fiber electric heating ice-melt chip 4 can be repaired for 0.4-1mm, TYXK-N types are named as in actual production to be repaiied
Multiple electrothermal chip.Can repair distributing position of the carbon fiber electric heating ice-melt chip 4 in blade construction and area according to ice-melt demand,
Heating-up temperature is determined.The region that heating-up temperature is higher is needed, electrothermal chip distribution is close；Need the region that heating-up temperature is low, electric heating
Chip distribution is dredged；The region that need not be heated, then need not set electrothermal chip, and by the glass fibers with electrothermal chip stack pile
Wei Bu is replaced.Under normal circumstances, distributing position i.e. installation site of the carbon fiber electric heating ice-melt chip in rotor blade can be repaired
It is the region that blade easily freezes, the bottom windward side of such as blade.Because completion is fabricated separately in chip, make as needed
The chip of one fixed width indefinite length, such as a width of 40cm.When installing, certain length is cut as needed, such as
30m.In the present embodiment, the area that chip is distributed in blade can be equivalent to length, and the length is according to electrothermal chip
Width and current density determine that the whole electric heating layer of blade can be made up of many sub- electrothermal chips, and every sub- electrothermal chip can be with
Individually power supply, can also many sub- electrothermal chip parallel operations.
Fig. 3 is that the present embodiment electrothermal chip carbon fiber bundle in it can repair electro-heat deicing aero-generator rotor blade is laid out
And the schematic diagram that concentrated wear influences on area of heat-supply service.Carbon fiber electric heating ice-melt chip 4, its structure are repaired in the present embodiment
For：The carbon fiber bundle arranged in the longitude and latitude both direction of glass fabric on carbon fiber bundle, electrothermal chip forms two-way latticed
It is mutual conduction that spacing between structure, carbon fiber is between 10-20mm, carbon fiber bundle in longitude and latitude both direction.Specifically
, can an interlamellar spacing fix warp-wise carbon fiber bundle on, then arrange an interlamellar spacing fixation broadwise carbon fiber bundle, or
On the broadwise carbon fiber bundle that one interlamellar spacing is fixed, then the warp-wise carbon fiber bundle that an interlamellar spacing of arranging is fixed, or warp-wise carbon is fine
Beam and broadwise carbon fiber bundle cross arrangement are tieed up, a cross one another net of each node is formed.
And in the prior art, carbon fiber bundle is warp-wise distribution, unidirectional list structure make it that every carbon fiber bundle is independent
, mutually it is not turned in electric property with other carbon fiber bundles, once certain root carbon fiber bundle breaks down, and it is disconnected if any a point
Open, whole piece carbon fiber bundle will be influenceed non-conductive, the heating property of electrothermal chip is had a strong impact on.And the Two-way Network in the present embodiment
Grating texture so that warp-wise carbon fiber is connected with each other by broadwise carbon fiber bundle, forms one, anti-destructive in electric property
Can be strong, if certain carbon fiber bundle breaks down, such as in warp-wise somewhere, carbon fiber bundle disconnects, and electric current can pass through latitude in gap
Breakpoint is bypassed to carbon fiber bundle, continues to circulate in the root carbon fiber bundle, has substantially no effect on the electric property of electrothermal chip, also
The heating property of electrothermal chip is not influenceed, and this performance of electrothermal chip can be used for repairing the defect such as bag gas, dry spot in blade
It is multiple, therefore referred to as recoverable carbon fiber electric heating ice-melt chip.
It is that based on glass fabric, its physical property is similar to glass fibers that carbon fiber electric heating ice-melt chip, which can be repaired,
Wei Bu, with regular shape (bar shaped), soft texture, it is easy to process the features such as, can enter according to the processing method of glass fabric
Row working process, is processed into different shape on request.Length is according to the electricity used needed for carbon fiber electric heating ice-melt chip can be repaired
Hot Chip-wide and the current density passed through are calculated；It can repair after the length of carbon fiber electric heating ice-melt chip, width determine,
The shape of its chip is determined that, according to shape need, cutting processing is carried out to electrothermal chip, the rectangular strap required for being formed
Shape structure repairs carbon fiber electric heating ice-melt chip.
Fig. 4 can repair electro-heat deicing wind power generator rotor for that can repair carbon fiber electric heating ice-melt chip in the present embodiment
Connection diagram in blade.As shown in figure 4, the carbon fiber electric heating ice-melt chip of repairing has side a and b, in A, B two
End, every warp-wise carbon fiber bundle is connected by binding post with plain conductor, by cable that warp-wise carbon fiber bundle is in parallel
Together, by turning on connecting bolt 41 through bolt through-hole 42, it is connected with blade cavity Inner power line (not shown)s, and
It is fixed on carbon fiber electric heating ice-melt chip can be repaired in blade.Thus, formed on it can repair carbon fiber electric heating ice-melt chip
Unified electrical structure, and be connected with power line, it is ensured that the power supply to every carbon fiber bundle.Wind turbines are carried in the present embodiment
For 220 volts of power supplys.
After installation, by vacuum perfusion process, carbon fiber electric heating ice-melt chip and other each portions are repaired by described
Part is molded in rotor blade together.Specifically, exterior skin frp layer, two axle glass fibres in leaf production mould
Cloth, TYXK-N types can repair electrothermal chip, three axle glass fabrics, core, inside panel frp layer material and arrange in order, separately
It is outer that the equipment such as release cloth, flow-guiding screen etc. related to priming by vacuum is installed, it is pumped into leaf using instillation process is vacuumized adhesive
Piece is made in mould, is fabricated to rotor blade.It is preferred that, adhesive here is epoxy resin.Its vacuum infusion molding process for compound
Identical with common blade manufacture craft, its poor Do is that common blade does not have TYXK-N to repair heating core lamella, it is impossible to be leaf
Piece provides the heat required for ice-melt, does not possess the function of electro-heat deicing.
Due to vacuum perfusion process be related at many levels, multiple material, influence product quality factor it is relatively more, such as there is gas
Bubble, bad, the local pickup of local infiltration etc., these factors are likely to cause occur local dry spot, dryspot meeting in blade
The life-span of the few blades of normal operation Huo Minus of blade is had influence on, it is necessary to carry out reparation operation.When dryspot is in heating core lamella
During outside, it can be repaired using common blade renovation technique, when dryspot is inside heating core lamella, it is necessary to
Heating core lamella is burrowed, and internal dryspot is exposed, then repaired.Core will be damaged by being burrowed on electrothermal chip
Carbon fiber bundle on piece, for the electrothermal chip of unidirectional list structure, due to being mutually not turned between carbon fiber bundle every, carbon fiber
Beam somewhere disconnect, whole carbon fiber bundle just disconnect it is non-conductive because vacuum perfusion process is all embedded in whole carbon fiber bundle
In epoxy resin, the carbon fiber bundle of disconnection is directly connected to upper its electric conductivity of recovery, does not possess such technique bar also at present
Part, therefore to result in large area in chip non-conductive for the disconnection of local carbon fiber bundle, nonconducting region , Minus that can not generate heat are few
The heat that electrothermal chip is produced, directly affects the ice-melt effect of electrothermal chip.Carbon fiber electric heating ice-melt chip can be repaired using double
To fenestral fabric, warp-wise carbon fiber bundle is by broadwise carbon fiber bundle mutual conduction, when some warp-wise carbon fiber bundles disconnect, except disconnected
Open that part is outer, the other parts of warp-wise carbon fiber bundle are still within conducting state, do not influence heated current to pass through, thermal loss compared with
It is small, it is little to the ice-melt influential effect of blade.Just can be by electrothermal chip using carbon fiber electric heating ice-melt chip can be repaired
On burrow, blade interior defect is exposed and is repaired.Therefore this blade is called recoverable electro-heat deicing wind-force to send out
Rotor blade.
Meanwhile, when some warp-wise carbon fiber bundles disconnect, the warp-wise carbon fiber of whole electrothermal chip can pass through broadwise
Carbon fiber bundle is connected, and can effectively control no power scope, reduces athermic area, it is ensured that the ice-melt effect of electrothermal chip.
In the present embodiment, carbon fiber electric heating ice-melt chip is repaired using 20 meters of length, width 40cm, cut out in the middle 10cm ×
Two kinds of square holes of 10cm and 15cm × 15cm are tested, when as a result showing that 10cm × 10cm holes occurs in chip, electrothermal chip
Ice-melt performance be basically unchanged, hole area be 15cm × 15cm when, the ice-melt effect of chip has an impact, recoverable blade
Its width of internal dry spot should be controlled within the 40% of electrothermal chip width.
Repairing carbon fiber electric heating ice-melt chip and can repair electro-heat deicing wind power generator rotor leaf to the present embodiment
Piece carries out the test of practical application, and test event is the heating deicing experiment of 1.5 megawatts of blades.When the project enters icing environment
When, the blade heating deicing system of experimental prototype starts to start, blade surface maximum temperature and minimum value all rapid increases, surface
10 DEG C or so of ice-out or maintenance, blade surface will not icing.During low-temperature ice-coating more than a day, the wind speed of model machine and
Power relation is normal, and other neighbouring units are seriously shut down in this period because of icing, finally, and model machine is than other shutdown machines
Multiple 1.2 ten thousand degree of group is electric.The heating deicing experiment of 2 megawatts of blades is additionally carried out, deicing model machine of the invention stops with other
Compared to multiple about 40,000 degree electricity of machine unit.
The present embodiment repairs electro-heat deicing aero-generator rotor blade it can be seen from more than, by blade
Middle installation carbon fiber ice-melt electrothermal chip, realizes the electro-heat deicing function of aero-generator rotor blade, meanwhile, by using carbon
The mode that fibre bundle longitude and latitude intersects prepares carbon fiber ice-melt electrothermal chip, is on the one hand adjusted by adjusting the density of carbon fiber bundle
By the current density of electrothermal chip, so that the heating-up temperature of electrothermal chip is adjusted, the two-way fenestral fabric of still further aspect
Arrangement make it that warp-wise carbon fiber is connected with each other by broadwise carbon fiber bundle, and one is formed in electric property, and anti-damage performance is strong,
If certain carbon fiber bundle breaks down, such as in warp-wise somewhere, carbon fiber bundle disconnects, and electric current can pass through broadwise carbon in gap
Fibre bundle bypasses breakpoint, continues to circulate in the root carbon fiber bundle, has substantially no effect on the electric property of ice-melt electrothermal chip, also
The heating property of ice-melt electrothermal chip is not influenceed.When some warp-wise carbon fiber bundles disconnect, the warp-wise carbon of whole electrothermal chip
Fiber can be connected by broadwise carbon fiber bundle, can effectively control no power scope, reduce athermic area, it is ensured that electric heating
The ice-melt effect of chip.
Second embodiment
Present embodiments provide a kind of preparation method for repairing electro-heat deicing aero-generator rotor blade, methods described
Comprise the following steps：
Step S1, preparation can repair carbon fiber electric heating ice-melt chip (hereinafter referred to as electrothermal chip).
Specifically, the longitude and latitude both direction in glass fabric arranges carbon fiber bundle, between warp-wise and broadwise carbon fiber bundle
Mutual conduction.
In this step, glass fabric longitude and latitude both direction arrange carbon fiber bundle, further for：It is solid in an interlamellar spacing
On fixed warp-wise carbon fiber bundle, then the broadwise carbon fiber bundle that an interlamellar spacing of arranging is fixed；Or the broadwise fixed in an interlamellar spacing
On carbon fiber bundle, then the warp-wise carbon fiber bundle that an interlamellar spacing of arranging is fixed；Or by warp-wise carbon fiber bundle and broadwise carbon fiber bundle
Cross arrangement, forms a cross one another net of each node.Spacing between carbon fiber is 10- in longitude and latitude both direction
20mm.Carbon fiber bundle on electrothermal chip ultimately forms two-way fenestral fabric.
When chip is made, it can be fabricated to that width is fixed, infinite in length cuts original chip material, such as 10
~50cm is wide, and length is continuous.When by chip distribution or in blade, according to the position of installation and heating
The need for area, certain length is cut.
Explanation is needed exist for, electrothermal chip is based on glass fabric, and its physical property is similar to glass fibre
Cloth, with regular shape (bar shaped), soft texture, it is easy to process the features such as, can according to glass fabric processing method carry out
Working process, is processed into different shape on request.It is above-mentioned to be prepared into after two-way network structure, according to the electrothermal chip width used
With the current density passed through, calculating can repair the length of carbon fiber electric heating ice-melt chip, so that cutting processing is carried out, needed for being formed
The rectangle banded structure wanted repairs carbon fiber electric heating ice-melt chip.
Step S2, design can repair distribution area of the carbon fiber electric heating ice-melt chip in aero-generator rotor blade and
Position.
Electrothermal chip is not arranged on all positions of blade, and the position simply easily frozen in blade.This reality
Applying the two-way network structure in example has the characteristic that can be cut, and therefore, it can be needed needed for cutting and connecting out greatly according to design
Small repairs carbon fiber electric heating ice-melt chip.
Fig. 5 be second embodiment of the invention in can repair schematic layout pattern of the carbon fiber electric heating ice-melt chip on blade.
As shown in figure 5, electrothermal chip is arranged in the bottom windward side of blade in the present embodiment, the shape and area of electrothermal chip are by that can repair
The length of multiple electrothermal chip, width, current density are carried out Decision and determined.The present embodiment is directed to 2.5MW blades, it is determined that can be repaired using 3 pieces
Electrothermal chip, every piece of chip is shaped as long 17 meters, wide 1 meter of rectangle, and electrothermal chip starts to blade root from leaf tip 51
Arrangement, 3 pieces can repair electrothermal chip using independent power supply mode, can one piece of one piece of power supply, can also 3 pieces of power supplies, this reality simultaneously
Example is applied using 3 pieces of chips power supply synchronization pattern in parallel.
Step S3, by it is described repair carbon fiber electric heating ice-melt chip and be fixed on the cores of three axle glass fabrics is installed
On.
It is preferred that, the core is blase timber or PVC foams.
As shown in figure 4, can repair carbon fiber electric heating ice-melt chip has side a and b, at A, B two ends, every warp-wise carbon is fine
Dimension beam is connected by binding post with plain conductor, and warp-wise carbon fiber bundle is connected in parallel by cable, passes through conducting
Connecting bolt 41 passes through bolt through-hole 42, is connected with blade cavity Inner power line (not shown)s, so that carbon can be repaired by realizing
Fiber electric heating ice-melt chip is fixed and the connection with power line.
Step S4, according to exterior skin frp layer, two axle glass fibres in aero-generator rotor blade makes mould
Cloth, carbon fiber electric heating ice-melt chip, three axle glass fabrics, core, the order arrangement material of inside panel frp layer can be repaired,
Carry out the vacuum infusion process of blade.
Here during priming by vacuum is carried out, first choice installs the related equipment of priming by vacuum, such as release cloth, flow-guiding screen
Deng, using vacuumize instillation process adhesive be pumped into leaf production mould in, be fabricated to rotor blade.It is preferred that, here
Adhesive is epoxy resin.
Fig. 6 be second embodiment of the invention in can repair vacuum infusion molding schematic diagram in aero-generator rotor blade.
As shown in fig. 6, in this step use vacuum perfusion process of the prior art, in blade mold outside cover frp layer 6,
Two axle glass fabrics 5, TYXK-N types can repair electrothermal chip 4, three axle glass fabrics 3, core (bIase timber or PVC bubbles
Foam) 2, inside panel frp layer 1 arrange in order in a mold, the additionally mounted equipment related to vacuum perfusion process is such as de-
Mould cloth 13, flow-guiding screen 12, connecting tube 10 etc., can repair electrothermal chip using 3 pieces in the present embodiment, and it grows 17 meters, wide 1 meter
Rectangle, is substituted being fitted without the position of chip with the glass fabric of condition of equivalent thickness.After various materials are installed in mould,
Vacuumize in the bonding agents such as epoxy resin injection mould, solidify to form the recoverable electro-heat deicing with electro-heat deicing apparatus
Aero-generator rotor blade.
A kind of preparation side for repairing electro-heat deicing aero-generator rotor blade of the present embodiment it can be seen from more than
Method, by installing carbon fiber ice-melt electrothermal chip in blade, realizes the electro-heat deicing function of aero-generator rotor blade, together
When, the mode intersected by using carbon fiber bundle longitude and latitude prepares carbon fiber ice-melt electrothermal chip, on the one hand by adjusting carbon fiber
The density of beam adjusts the current density by electrothermal chip, so as to adjust the heating-up temperature of electrothermal chip, still further aspect is double
Make it that warp-wise carbon fiber is connected with each other by broadwise carbon fiber bundle to the arrangement of fenestral fabric, one is formed in electric property
Body, anti-damage performance is strong, if certain carbon fiber bundle breaks down, such as in warp-wise somewhere, carbon fiber bundle disconnects, and electric current is disconnected
The place of opening can bypass breakpoint by broadwise carbon fiber bundle, continue to circulate in the root carbon fiber bundle, have substantially no effect on ice-melt heating core
The electric property of piece, the heating property of ice-melt electrothermal chip is not just influenceed yet.When some warp-wise carbon fiber bundles disconnect, entirely
The warp-wise carbon fiber of electrothermal chip can be connected by broadwise carbon fiber bundle, can effectively control no power scope, and reduction is not sent out
The area of heat, it is ensured that the ice-melt effect of electrothermal chip.The above is the preferred embodiment of the present invention, it is noted that for
For those skilled in the art, on the premise of principle of the present invention is not departed from, some change can also be made
Enter and retouch, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
1. one kind can repair electro-heat deicing aero-generator rotor blade, it is characterised in that the blade includes：Carbon can be repaired fine
Tie up electro-heat deicing chip.
2. electro-heat deicing aero-generator rotor blade can be repaired as claimed in claim 1, it is characterised in that the blade is also
Including：Inside panel frp layer, core, three axle glass-fiber-fabrics, two axle fiberglass cloths, exterior skin frp layer；Wherein, it is described
Carbon fiber electric heating ice-melt chip can be repaired to be located between three axle glass-fiber-fabrics, two axle fiberglass cloths.
3. electro-heat deicing aero-generator rotor blade can be repaired as claimed in claim 1 or 2, it is characterised in that it is described can
Repairing carbon fiber electric heating ice-melt chip structure is, on glass fabric, the carbon fiber bundle arranged with longitude and latitude both direction, warp
It is mutual conduction between broadwise carbon fiber bundle.
4. electro-heat deicing aero-generator rotor blade can be repaired as claimed in claim 3, it is characterised in that the longitude and latitude two
The carbon fiber bundle of individual direction arrangement, further for：
The warp-wise carbon fiber bundle that one interlamellar spacing is fixed is located on the broadwise carbon fiber bundle that an interlamellar spacing is fixed；
Or,
The broadwise carbon fiber bundle that one interlamellar spacing is fixed is located on the warp-wise carbon fiber bundle that an interlamellar spacing is fixed；
Or,
Warp-wise carbon fiber bundle and broadwise carbon fiber bundle cross arrangement, form a cross one another net of each node.
5. a kind of preparation method of recoverable electro-heat deicing aero-generator rotor blade, it is characterised in that methods described bag
Include following steps：
Preparation can repair carbon fiber electric heating ice-melt chip；
Design can repair distribution area and position of the carbon fiber electric heating ice-melt chip in aero-generator rotor blade；
By it is described repair carbon fiber electric heating ice-melt chip and be fixed on be provided with the core of three axle glass fabrics；
Aero-generator rotor blade make mould according to exterior skin frp layer, two axle glass fabrics, carbon can be repaired
Fiber electric heating ice-melt chip, three axle glass fabrics, core, the order arrangement material of inside panel frp layer, are filled using vacuum
Note technological forming blade.
6. the preparation method of recoverable electro-heat deicing aero-generator rotor blade as claimed in claim 5, its feature exists
In, the preparation can repair carbon fiber electric heating ice-melt chip, further for：On glass fabric, in longitude and latitude both direction
Arrange carbon fiber bundle, mutual conduction between warp-wise and broadwise carbon fiber bundle.
7. the preparation method of recoverable electro-heat deicing aero-generator rotor blade as claimed in claim 6, its feature exists
In, the carbon fiber bundle of longitude and latitude both direction arrangement, further for：
The warp-wise carbon fiber bundle that one interlamellar spacing is fixed is located on the broadwise carbon fiber bundle that an interlamellar spacing is fixed；
Or,
The broadwise carbon fiber bundle that one interlamellar spacing is fixed is located on the warp-wise carbon fiber bundle that an interlamellar spacing is fixed；
Or,
Warp-wise carbon fiber bundle and broadwise carbon fiber bundle cross arrangement, form a cross one another net of each node.
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