CN110259650B - Anti-icing wind power generation blade - Google Patents
Anti-icing wind power generation blade Download PDFInfo
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- CN110259650B CN110259650B CN201910384512.5A CN201910384512A CN110259650B CN 110259650 B CN110259650 B CN 110259650B CN 201910384512 A CN201910384512 A CN 201910384512A CN 110259650 B CN110259650 B CN 110259650B
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- annular
- cavity
- blade
- power generation
- wind power
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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
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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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
- 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
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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
- 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
Abstract
The invention discloses an anti-icing wind power generation blade, which comprises a blade body, wherein a deicing device capable of preventing the wind power generation blade from icing is densely distributed on the surface of the blade body, the deicing device is a carbon nanotube heating wire, a cavity is arranged at the blade root position of the blade body, an electrifying device connected with the carbon nanotube heating wire for electrifying is arranged in the cavity, a moving device capable of driving the electrifying device to move outwards from the cavity is arranged on the electrifying device, and an electromagnetic seat capable of enabling the moving device to move through magnetic attraction is arranged on one side of the moving device.
Description
Technical Field
The invention relates to the field of wind power generation, in particular to an anti-icing wind power generation blade.
Background
The low-temperature environment brings serious tests to the blades and even the whole fan, and the problems of icing, material and structural property change and load change of the blades caused by the low-temperature environment are solved singly for the blades, and the large-size fan is affected by the icing problems in inland areas, particularly mountain areas. The low temperature factors affect the design of the fan in many ways: ice and frost and the rise of air density at low temperature have a significant effect on the fan aerodynamics, which in turn affects the load and power output of the fan. The low temperature can cause the blade to adhere to a layer of ice of greater mass, which can alter the frequency of the fan blade and thus alter its dynamic response behavior. At the same time, the control system is also affected. Since icing changes the aerodynamic profile of the blade, and thus causes blade stall to be possibly advanced or delayed from design expectations, the corresponding configuration of the electric or hydraulic pitch control should be changed accordingly, and icing of the blade may cause a failure of the detection signal system of the fan to feed back an error signal, and the operation safety of the fan itself and the safety of the surrounding environment thereof may be affected by low temperature or icing. Fragments of ice sheets thrown during operation of the fan or large ice cubes falling off may injure people or things in the vicinity of the fan. The integrity of the fan structure itself may also be affected by the imbalance or asymmetry of the iced blades. Resonance may be caused by icing changing the fan component frequency, which also increases the fatigue load of the fan. An increase in air density may increase load and maximum power output. If the fan fails to react automatically, the motor or drive train may burn out and the gearbox may be overloaded or damaged.
Anti-icing is so-called active deicing, and the existing deicing method has the advantages that the blade is coated with anti-icing paint, for example, black, and the ice layer melts earlier than a white blade after the blade absorbs sunlight and is heated in the daytime. However, the temperature on the blade in summer may be high, which may affect the material properties of the glass fibre reinforced plastic, such as softening the blade, decreasing the stiffness and thus affecting the clearance etc.
There are also methods of heating the blades with hot air, requiring specific ducts for conducting and extracting the hot gases. The advantage is that the aerodynamic profile of the blade is not affected. There is no special requirement for the lightning protection system of the blade. At standstill, the entire blade can be de-iced. The disadvantage is that glass fibre reinforced plastic materials have a thermal insulation and require a large heating energy at high wind speeds or when the blades are rotated. If the blade is frozen and then is stopped for heating and deicing, power generation cannot be realized while power consumption is required to be heated, and troublesome line disassembly and assembly work can occur in the blade installation and later maintenance processes in a heating mode.
Certain anti-icing coatings are also an active anti-icing means that reduces shear forces between the blade and the ice layer, these coatings passing wind tunnel and on-hook tests. The anti-icing coating is adopted for the whole blade, the cost is relatively low, no special lightning protection requirement exists, the blade is easy to maintain, and the whole surface is protected. Furthermore, this type of coating may reduce susceptibility to dust and insects during warm periods. The disadvantage is that the ice layer can fall off or be thrown out during operation. At low wind speeds or idling when weather is poor, a great deal of ice formation can still occur in the blade tip area due to the low stress of the ice layer. There is also the risk of pneumatic and mass asymmetry. At present, a plurality of large blade paint manufacturers push out self anti-icing paint or anti-icing film, and unfortunately, the problem of blade icing is not fundamentally solved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an anti-icing wind power generation blade.
The invention further solves the technical problems that: the traditional anti-icing paint cannot really realize an active deicing effect, and hot air heating deicing needs to be stopped, has high power consumption and is not easy to install and maintain.
In order to achieve the above purpose, the present invention adopts the following scheme:
an anti-icing wind power generation blade comprises a blade body, wherein a deicing device capable of preventing the wind power generation blade from icing is arranged on the blade body, and the deicing device is a carbon nanotube heating wire or a carbon nanotube heating coating; the non-metal doped carbon nanotube electrocatalytic material adopted by the carbon nanotube heating wire has the remarkable advantages of high heating rate, energy conservation and environmental protection, is not limited by any external dimension, does not need complex wiring, and has an electrothermal conversion rate of more than 95 percent, which is incomparable with the traditional resistance heating mode at present.
And after the carbon nano tube heating wires are distributed, covering and reinforcing the carbon nano tube heating wires by using a wear-resistant and corrosion-resistant coating.
Preferably, the deicing device is carbon nanotube heating paint, even if the damaged overall performance of a part of areas is still unaffected, and the deicing device is more convenient to construct. When the deicing device adopts the carbon nano tube heating coating, the carbon nano tube heating coating is coated on the surface of the blade body, then the conductive copper wires are arranged on the carbon nano tube heating coatings on the two sides, and then the coating with wear resistance and corrosion resistance is coated on the conductive copper wires to form a layer of wear resistance and corrosion resistance coating. The carbon nanotube heating coating can be detected and printed on the blade body in a silk screen printing mode, and a plurality of independent heating units are connected in parallel or in series and then connected with the electrifying device through conductive copper wires.
Preferably, the blade body blade root position is equipped with the cavity be equipped with the power-on device who connects defroster circular telegram in the cavity, power-on device mainly is used for playing the effect of carrying out intercommunication power supply line for the defroster be equipped with the mobile device that can drive power-on device and outwards remove from the cavity mobile device one side is equipped with the electromagnetic socket that can adsorb the messenger mobile device through magnetic force, electromagnetic socket sets up between wind-driven generator wheel hub and blade body and fixes on generator wheel hub be equipped with the power supply unit that can communicate with the power-on device and carry out the power supply to the defroster on the electromagnetic socket, the defroster that gathers on the blade body is connected on the power-on device, produces magnetic force after the electromagnetic socket circular telegram and outwards removes mobile device from the cavity to make power-on device and power supply unit communicate for the defroster circular telegram and heat.
Further, the mobile device includes a plurality of first guide rails that set up along cavity inner wall interval, and the cavity is columniform cavity and one side is unclosed open condition, first guide rail is including the straight rail of horizontal setting and the arc guide rail of intercommunication in straight rail one end the activity is pegged graft respectively in first guide rail has the guide post that can follow first guide rail and remove be equipped with annular base in the cavity, guide post one end is connected respectively on annular base circumference outer wall be equipped with annular joint groove in the annular base, circular base rotates the joint in annular joint groove annular base is equipped with permanent magnet along annular lateral wall towards cavity opening side, and circular base rotates the joint in annular base, and the guide post that the annular base set up through the outer wall is followed first guide rail and is moved to the open position of cavity, and the effect of straight rail is that makes annular base straight line motion earlier, and arc guide rail then makes annular base produce the rotation forward simultaneously.
Further, circular telegram device includes the annular table of joint in annular joint inslot the annular table is connected with insulating base towards cavity opening one side the annular table has square mouth with insulating base center link up there is square mouth be equipped with the anti-rotation guide arm that prevents insulating base pivoted in the square mouth, anti-rotation guide arm one end is fixed on the cavity keeps away from open-ended lateral wall insulating base is last the symmetry to be equipped with flexible contact the annular table is kept away from insulating base one side and is equipped with positive pole terminal and the negative pole terminal that can connect the positive pole of defroster respectively the arc that is equipped with corresponding with positive pole terminal and negative pole terminal is given way to annular base one side runs through and is equipped with the arc that gives way with the positive pole terminal and the negative pole terminal is connected with the positive pole of defroster respectively, positive pole terminal and negative pole terminal are linked together with the flexible contact that corresponds respectively, flexible contact is connected with power supply unit, annular table and insulating base are driven forward by annular base along anti-rotation guide arm this moment, because the existence annular table and the insulating base of anti-rotation guide arm can not take place rotatablely in the base in the time letting way in the annular base of the removal of the second half way, annular base can be relative with annular joint its annular table and annular base can take place with the opposite arc base and two opposite sides can take place with the annular base that the annular terminal and the arc that can not rotate mutually with the annular base when two opposite sides of annular terminal and the annular terminal that can each other.
Further, the power supply device comprises jacks which are symmetrically arranged on the electromagnetic base and are respectively connected with positive current and negative current, the deicing device is inserted into the jacks through the telescopic contacts to supply power, the telescopic contacts on the insulating base move through magnetic attraction of the electromagnetic base to the annular base, and meanwhile move to the electromagnetic base along with the annular base and are inserted into the jacks, and at the moment, the insulating base cannot rotate due to the existence of the anti-rotation guide rod, so that the telescopic contacts can be inserted into the jacks.
Preferably, the electromagnetic seat comprises a fixing lug capable of fixing the electromagnetic seat on a generator hub, and an electromagnet capable of generating magnetic force after being electrified is arranged on the fixing lug, wherein the electromagnet is an existing mode of generating magnetic force through internal coil electrification in the prior art.
Further, a plurality of L-shaped clamping hooks are respectively arranged on the permanent magnet, an annular locking groove is formed in one side of the electromagnet facing the annular base, a notch corresponding to the L-shaped clamping hooks is formed in the outer wall of one side of the electromagnet, the notch is communicated with the annular locking groove, the L-shaped clamping hooks penetrate through the notch and are clamped in the annular locking groove, the direction of the L-shaped clamping hooks is in forward direction, the electromagnet on the electromagnetic base is electrified to generate magnetic force to attract the permanent magnet on the annular base, the annular base enables the L-shaped clamping hooks to linearly penetrate through the notch facing the annular base on the electromagnet through the action of straight rail forward linear movement to extend into the annular locking groove, the annular base rotates when passing through the arc-shaped guide rail, and one end of each L-shaped clamping hook is hooked on the inner wall of the annular locking groove.
Further, at least one first guide rail is arranged in a through mode, a plurality of locking devices capable of locking the guide posts to be unable to move are arranged on the outer wall of the blade body, located outside the cavity, of the blade root, the locking devices are located at two ends of the through first guide rail respectively, the locking devices are arranged on one side of the through first guide rail respectively, the locking devices ensure that internal components cannot move at will to affect the installation process before installation, and after all installation is finished, the internal connecting pieces are fixed through the locking devices at the other ends to prevent the connecting components in the cavity from moving when the wind driven generator works.
Further, the locking device comprises a first through hole longitudinally formed in the guide post, fixing plates are respectively arranged at two ends of the first through hole, second through holes corresponding to the first through holes are formed in the fixing plates, the guide post is locked in the first through holes and the second through holes through penetrating bolts, and when the guide post moves to any one of two ends, the second through holes in the fixing plates are aligned with the first through holes in the guide post, and the bolts are inserted for locking.
Preferably, a bearing is arranged between the energizing device and the annular clamping groove, and the bearing can be installed on the larger fan blade to facilitate rotation between the energizing device and the annular clamping groove.
In summary, compared with the prior art, the invention has the following beneficial effects:
according to the invention, the carbon nanotube heating wire or the carbon nanotube heating paint is coated on the blade body for deicing, the carbon nanotube heating wire is a nonmetal-doped carbon nanotube electrocatalytic material, the method has the remarkable advantages of high heating rate, energy conservation and environmental protection, is not limited by any external dimension, does not need complex wiring, has the electrothermal conversion rate of more than 95%, is incomparable with the traditional resistance heating mode at present, even if the damaged integral performance of a part of areas is still unaffected, the construction is more convenient, the tiny volume of the carbon nanotube heating wire does not influence the pneumatic appearance of the blade, the deicing without stopping machine for heating is realized, the deicing is also more active than the traditional anti-icing paint, the complexity of construction is further reduced by using electromagnetic connection for power-on energy, the blade mounting process or the dismounting maintenance are very fast, the extra wiring difficulty is not increased in the dismounting process, and a more convenient and reliable solution is provided for the deicing problem in the whole wind power generation field.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is one of the exploded views of the present invention;
FIG. 4 is a second exploded view of the present invention;
FIG. 5 is one of the cross-sectional schematic views of the present invention;
FIG. 6 is a second schematic cross-sectional view of the present invention;
FIG. 7 is an enlarged partial cross-sectional schematic view of the present invention;
FIG. 8 is a third schematic cross-sectional view of the present invention;
fig. 9 is an enlarged schematic view at a in fig. 3.
Description of the embodiments
The invention is further described in the following description and detailed description with reference to the drawings:
the anti-icing wind power generation blade shown in fig. 1 to 9 comprises a blade body 1, wherein a deicing device 10 capable of preventing the wind power generation blade from icing is arranged on the blade body 1, the deicing device 10 is a carbon nanotube heating wire 2, the carbon nanotube heating wire is made of a nonmetal-doped carbon nanotube electrocatalytic material, the anti-icing wind power generation blade has the remarkable advantages of high heating rate, energy conservation and environmental protection, is not limited by any external dimension, does not need complex wiring, has an electrothermal conversion rate of more than 95%, and is incomparable with the traditional resistance heating mode at present, and the carbon nanotube heating wire 2 is covered and reinforced by using a wear-resistant and corrosion-resistant coating after the carbon nanotube heating wire 2 is arranged.
The deicing device 10 can also use carbon nano tube heating paint, even if the damaged overall performance of a part of areas is still unaffected, and the construction is more convenient.
The carbon nanotube heating wire 2 or the carbon nanotube heating coating is covered and reinforced by the wear-resistant and corrosion-resistant coating, so that the pneumatic performance of the fan is not affected.
According to the invention, a cavity 11 is arranged at the blade root position of a blade body 1, the cavity 11 is a cylindrical cavity 11, one side of the cavity is in an unsealed open state, an electrifying device 3 which can be connected with a deicing device 10 and electrify the deicing device 10 is arranged in the cavity 11, a moving device 4 which can drive the electrifying device 3 to move outwards from the cavity 11 is arranged on the electrifying device 3, an electromagnetic seat 5 which can enable the moving device 4 to move through magnetic attraction is arranged on one side of the moving device 4, the electromagnetic seat 5 is arranged between a wind driven generator hub and the blade body 1 and is fixed on the generator hub, a power supply device 6 which can be communicated with the electrifying device 3 and can supply power to the deicing device 10 is arranged on the electromagnetic seat 5, and the moving device is moved outwards from the cavity through magnetic force generated after the electromagnetic seat is electrified, so that the electrifying device and the power supply device are communicated with the power supply device to heat the deicing device 10.
The moving device 4 comprises a plurality of first guide rails 12 which are arranged at intervals along the inner wall of the cavity 11, the first guide rails 12 comprise a straight rail 121 which is transversely arranged and an arc-shaped guide rail 122 which is communicated with one end of the straight rail 121, guide posts 41 which can move along the first guide rails 12 are movably inserted in the first guide rails 12, annular bases 42 are arranged in the cavity 11, one ends of the guide posts 41 are respectively connected to the circumferential outer wall of the annular bases 42, annular clamping grooves 43 are formed in the annular bases 42, the energizing device 3 is rotationally clamped in the annular clamping grooves 43, permanent magnet 44 is arranged along the annular side wall on the side, facing the opening of the cavity 11, of the annular bases 42, the energizing device 3 is rotationally clamped in the annular bases 42, the annular bases 42 move along the first guide rails 12 to the opening positions of the cavity 11 through the guide posts 41 which are arranged on the outer wall, the effect of the straight rail 121 is that the annular bases move forward linearly, and the arc-shaped guide rails 122 rotate the annular bases forward simultaneously.
The energizing device 3 comprises an annular table 31 clamped in an annular clamping groove 43, a bearing 40 is arranged between the annular table 31 and the annular clamping groove 43 in the energizing device 3, one side of the annular table 31 facing to the opening of the cavity 11 is connected with an insulating base 32, a square opening 30 is penetrated through the centers of the annular table 31 and the insulating base 32, an anti-rotation guide rod 110 for preventing the insulating base 32 from rotating is arranged in the square opening 30, one end of the anti-rotation guide rod 110 is fixed on the side wall of the cavity 11 far away from the opening, telescopic contacts 33 are symmetrically arranged on the insulating base 32, an anode terminal 311 and a cathode terminal 322 capable of respectively connecting the anode and the cathode of the deicing device 10 are arranged on one side of the annular table 31 far away from the insulating base 32, an arc-shaped yielding groove 46 corresponding to the anode terminal 311 and the cathode terminal 322 is penetrated on one side of the annular base 42, the positive terminal 311 and the negative terminal 322 respectively pass through the corresponding arc-shaped abdication grooves 46 and are connected with the positive electrode and the negative electrode of the deicing device 10, the positive terminal 311 and the negative terminal 322 are respectively communicated with the corresponding telescopic contacts 33, the telescopic contacts 33 are connected with the power supply device 6, the annular table 31 and the insulating base 32 are driven to move forwards along the anti-rotation guide rod 110 by the annular base 42, and the annular table 31 and the insulating base 32 cannot rotate along with the annular base 42 in the second half due to the existence of the anti-rotation guide rod 110, at the moment, the annular base 42 can rotate relative to the annular table 31 which is movably clamped together with the annular base 42, and the two through arc-shaped abdication grooves 46 on one side of the annular base 42 enable the positive terminal 311 and the negative terminal 322 not to be clamped with the annular base when the annular base 42 rotates.
The power supply device 6 in the invention comprises sockets 61 symmetrically arranged on the electromagnetic seat 5 and respectively connected with positive current and negative current, the deicing device 10 is inserted into the sockets 61 through the telescopic contact 33 to perform power supply work, and the telescopic contact 33 on the insulating base 32 moves to the electromagnetic seat 5 along with the annular base 42 and is inserted into the sockets 61 through the magnetic attraction movement of the electromagnetic seat 5 to the annular base 42, at the moment, the insulating base 32 is ensured not to rotate due to the existence of the anti-rotation guide rod 110, so that the telescopic contact 33 can be ensured to be inserted into the sockets 61.
The electromagnetic seat 5 comprises a fixing lug 51 which can fix the electromagnetic seat 5 on a generator hub, the fixing lug 51 is provided with an electromagnet 50 which can generate magnetic force after being electrified, and the electromagnet 50 is an existing mode of generating magnetic force through internal coil electrification in the prior art.
In the invention, a plurality of L-shaped hooks 45 are respectively arranged on the permanent magnet 44, an annular locking groove 52 is arranged in one side of the electromagnet 50 facing the annular base 42, a notch 53 corresponding to the L-shaped hooks 45 is arranged on the outer wall of one side of the electromagnet 50, the notch 53 is communicated with the annular locking groove 52, the L-shaped hooks 45 pass through the notch 53 and are clamped in the annular locking groove 52, the direction of the L-shaped hooks is arranged along the rotating direction of the annular base 42, the electromagnet 50 on the electromagnetic base 5 is electrified to generate magnetic force to attract the permanent magnet 44 on the annular base 42, the annular base 42 linearly passes through the notch 53 facing the annular base 42 on the electromagnet 50 through the action of the straight rail 121 and stretches into the annular locking groove 52, when the annular base 42 passes through the arc-shaped guide rail 122, the L-shaped hooks 45 on the annular base 42 rotate along with the rotation of the annular base 42, and one end of the L-shaped hooks 45 are hooked on the inner wall of the annular locking groove 52.
In the invention, at least one first guide rail 12 is arranged in a through way, a plurality of locking devices 100 which can lock the guide posts 41 to move are arranged on the outer wall of the blade body 1, which is positioned outside the cavity 11, at the blade root position, the locking devices 100 are respectively arranged at one side of the through first guide rail 12, the locking devices 100 are specifically positioned at two ends of the through first guide rail 12, one end of the locking devices 100 ensures that the internal parts cannot move randomly to influence the installation process before installation, and after all installation is finished, the connecting parts which move in place inside are fixed by the locking devices 100 at the other end, which are close to the opening of the cavity 11, so as to prevent the connecting parts in the cavity 11 from moving when the wind driven generator works.
The locking device 100 of the present invention includes a first through hole 120 longitudinally provided in the guide post 41, fixing plates 101 are respectively provided at two ends of the first through hole 12, a second through hole 102 corresponding to the first through hole 120 is provided on the fixing plates 101, the guide post 41 is locked in the first through hole 120 and the second through hole 102 by penetrating bolts, and when the guide post 41 moves to any one of two ends, the guide post 41 is aligned with the first through hole 120 on the guide post 41 by the second through hole 102 corresponding to the fixing plate 101, and the bolts are inserted for locking.
During the installation process: firstly, a carbon nano tube heating wire 2 or a carbon nano tube heating paint is coated on a blade body 1, the specific coating mode can be set according to the required mode, then, corrosion-resistant, high-temperature-resistant and wear-resistant paint is covered and reinforced on the carbon nano tube heating wire 2 or the carbon nano tube heating paint, an electromagnetic seat 5 is fixed on a position of a generator hub corresponding to a fan blade through a fixing lug 51, an electrifying device 3 in a cavity 11 at the blade root of the blade body 1 is moved to one end of a fixing plate 101 close to the blade position, a second through hole 102 of the fixing plate 101 is aligned with a first through hole 120 on a guide post 41, a bolt is inserted for locking, then, the blade body 1 is mounted on the generator hub in advance, the cavity 11 of the blade body 1 is aligned with the electromagnetic seat 5 pre-mounted on the generator hub, after the blade body 1 is fixed, the bolts locked on the fixing plate 101 are released, the electromagnet 50 in the electromagnetic seat 5 is electrified to generate magnetic force, because the permanent magnet 44 on the annular base 42 and the electromagnet 50 are electrified to generate magnetic force to attract each other, the annular base 42 moves forward and linearly along the straight rail 121 in the first guide rail 12 by virtue of the guide post 41 encircling the circumferential outer wall of the annular base, at the moment, the L-shaped clamping hook 45 on the permanent magnet 44 linearly passes through the notch 53 on the electromagnet 50 which is opposite to the annular base 42 and stretches into the annular locking groove 52, when the annular base 42 rotates when passing through the arc-shaped guide rail 122, the L-shaped clamping hook 45 on the annular base 42 rotates along with the rotation of the annular base 42, one end of the L-shaped clamping hook 45 is hooked on the inner wall of the annular locking groove 52, and in the process that the annular base 42 is close to and attached to the electromagnet 50, the power-on device 3 clamped by the bearing 40 in the annular base 42 is also close to the power supply device 6 on the electromagnetic seat 5 along with the annular base 42, the insulating base 32 fixedly connected to one side of the insulating base 32 on the annular base 31 is simultaneously moved to the power supply device 6 on the electromagnetic seat 5 through the set telescopic contact 33 and inserted into the socket 61, so that the connection of the power supply to the anode and the cathode of the carbon nanotube heating wire 2 is completed, at the moment, the guide post 41 positioned at the joint of the blade body 1 and the hub of the generator is locked by penetrating bolts with the first through hole 120 on the guide post 41 through the fixed plate 101 on the side, and then the power supply to the electromagnet 50 on the electromagnetic seat 5 is disconnected, and only the power supply connection to the carbon nanotube heating wire 2 is reserved.
The wear-resistant and corrosive coating can be prepared by any one of the following methods:
the preparation method comprises the following steps:
45 parts of fluorocarbon resin, 15 parts of antifouling reinforcing filler, 65 parts of ethyl acetate, 15 parts of N-vinyl pyrrolidone, 8 parts of neopentyl glycol diglycidyl ether, 6 parts of paraffin oil and 2 parts of hyperdispersant. The antifouling reinforcing filler is hydrophobic fumed silica and transparent powder, and the mass ratio of the antifouling reinforcing filler to the transparent powder is 2:9; the granularity of the transparent powder is 800-1200 meshes; the hyperdispersant is Disperbyk-163.
(1) Mixing the antifouling reinforcing filler, half volume of ethyl acetate and the hyperdispersant, and performing ultrasonic dispersion treatment for 1.5 hours to obtain a mixed solution I;
(2) Mixing fluorocarbon resin, half volume of ethyl acetate, N-vinyl pyrrolidone, neopentyl glycol diglycidyl ether and paraffin oil, heating to 50 ℃, and stirring at a low speed for 1.5 hours while keeping the temperature to obtain a mixed solution II;
(3) Mixing the mixed liquid I obtained in the step (1) with the mixed liquid II obtained in the step (2), stirring at a high speed for 45min, grinding and filtering to obtain the product.
The preparation method comprises the following steps:
1) Adding fatty alcohol polyoxyethylene ether and triethanolamine into butanone, emulsifying and dispersing for 10min with explosion-proof high shear emulsifying machine at 10000rpm to obtain mixed solution;
2) Slowly adding nano diamond powder with the average particle size of 20nm into the mixed solution obtained in the step 1) under the ultrasonic condition of 900W while maintaining high-shear emulsification dispersion, so as to prevent the nano diamond powder from precipitating at the bottom of a container; after all nano diamond powder is added, continuously emulsifying and dispersing for 10min under the condition of 10000rpm, and then filtering impurities by using a filter with the pore diameter of 0.1 mu m, wherein the obtained filtrate is the wear-resistant additive. Wherein the wear-resistant additive comprises 20% of nano diamond, 2% of fatty alcohol polyoxyethylene ether, 1% of triethanolamine and the balance of butanone; the pH value of the wear-resistant additive is 7-9.
3) Adding the wear-resistant additive into the super-hydrophobic coating according to the mass ratio of the super-hydrophobic coating to the wear-resistant additive of 100:10, and uniformly stirring to obtain the wear-resistant coating. The super-hydrophobic coating is an Xudi solvent type fluororesin LF200, the curing agent is isocyanate, and the mass ratio of the curing agent to the fluororesin is 1:10. And uniformly coating the super-hydrophobic wear-resistant coating on the surface of the cleaned glass, and curing for 7 days at room temperature to obtain the super-hydrophobic wear-resistant coating.
The wear-resistant and corrosive coatings of the present invention can be prepared by existing preparation methods, only a few of which are given above, without being limited thereto.
While there has been shown and described what is at present considered to be the fundamental principles and the main features of the invention and the advantages thereof, it will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, but is described in the foregoing description merely illustrates the principles of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Anti-icing wind power generation blade comprising a blade body (1), characterized in that: be equipped with on blade body (1) can prevent frozen defroster (10) of wind turbine blade, defroster (10) are carbon nanotube heater (2) or carbon nanotube coating that generates heat be equipped with on blade body (1) wear-resisting, the corrosivity coating that covers defroster (10 blade root position is equipped with cavity (11) be equipped with in cavity (11) can connect defroster (10) and to powered on device (3) powered on device (10) powered on device (3) be equipped with mobile device (4) that can drive powered on device (3) and outwards remove from cavity (11) powered on device (4) one side is equipped with electromagnetic seat (5) that can make mobile device (4) remove through magnetic force absorption, electromagnetic seat (5) set up between wind turbine hub and blade body (1) and fix on the generator hub powered on electromagnetic seat (5) be equipped with can with powered on device (3) intercommunication and carry out powered on device (10).
2. An anti-icing wind power generation blade according to claim 1 wherein: the moving device (4) comprises a plurality of first guide rails (12) which are arranged at intervals along the inner wall of the cavity (11), each first guide rail (12) comprises a straight rail (121) which is transversely arranged and an arc-shaped guide rail (122) which is communicated with one end of each straight rail (121), guide columns (41) which can move along the first guide rails (12) are movably inserted into the first guide rails (12) respectively, annular bases (42) are arranged in the cavity (11), one ends of the guide columns (41) are respectively connected onto the circumferential outer wall of each annular base (42), annular clamping grooves (43) are formed in the annular bases (42), and permanent magnets (44) are arranged on one sides of the annular bases (42) facing the opening of the cavity (11) along the annular side walls.
3. An anti-icing wind power generation blade according to claim 2 wherein: the energizing device (3) comprises an annular table (31) which is clamped in an annular clamping groove (43), an insulating base (32) is connected to one side of the annular table (31) facing the opening of the cavity (11), a square opening (30) is penetrated through the centers of the annular table (31) and the insulating base (32), an anti-rotation guide rod (110) which prevents the insulating base (32) from rotating is arranged in the square opening (30), one end of the anti-rotation guide rod (110) is fixed on the side wall of the cavity (11) far away from the opening, telescopic contacts (33) are symmetrically arranged on the insulating base (32), an anode terminal (311) and a cathode terminal (322) which can be respectively connected with the anode terminal (311) and the cathode terminal (322) of the deicing device (10) are arranged on one side of the annular table (31) far away from the insulating base (32), arc-shaped yielding grooves (46) corresponding to the anode terminal (311) and the cathode terminal (322) are penetrated through, the anode terminal (311) and the cathode terminal (322) are respectively connected with the device (10) through the corresponding arc yielding grooves (46), the anode terminal (311) and the cathode terminal (33) are respectively connected with the telescopic contacts (33) and the telescopic contacts (33) respectively, a bearing (40) is arranged between the energizing device (3) and the annular clamping groove (43).
4. An anti-icing wind power generation blade according to claim 3 wherein: the power supply device (6) comprises sockets (61) which are symmetrically arranged on the electromagnetic seat (5) and respectively connected with positive current and negative current, and the deicing device (10) is inserted into the sockets (61) through the telescopic contact (33) to perform power supply work.
5. An anti-icing wind power generation blade according to claim 2 wherein: the electromagnetic seat (5) comprises a fixing lug (51) which can fix the electromagnetic seat (5) on a generator hub, and an electromagnet (50) which can generate magnetic force after being electrified is arranged on the fixing lug (51).
6. An anti-icing wind power generation blade according to claim 5 wherein: be equipped with a plurality of L shape trip (45) on permanent magnet (44) respectively be equipped with annular locking groove (52) in the one side of electro-magnet (50) facing annular base (42) be equipped with notch (53) that correspond L shape trip (45) on the outer wall of one side of electro-magnet (50), notch (53) are linked together with annular locking groove (52), L shape trip (45) pass notch (53) and joint in annular locking groove (52).
7. An anti-icing wind power generation blade according to claim 2 wherein: the blade comprises a blade body (1), at least one first guide rail (12) is arranged in a penetrating mode, a plurality of locking devices (100) capable of locking guide posts (41) and incapable of moving are arranged on the outer wall of the blade body (1) outside a cavity (11), and the locking devices (100) are respectively arranged on one side of the first guide rail (12) in the penetrating mode.
8. An anti-icing wind power generation blade according to claim 7 wherein: the locking device (100) comprises a first through hole (120) longitudinally formed in the guide column (41), fixing plates (101) are respectively arranged at two ends of a through first guide rail (12), second through holes (102) corresponding to the first through hole (120) are formed in the fixing plates (101), and the guide column (41) is locked in the first through hole (120) and the second through holes (102) through penetrating bolts.
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| CN210919349U (en) * | 2019-05-09 | 2020-07-03 | 中山宝立得高分子材料有限公司 | Novel anti-icing wind power generation blade |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2523856A4 (en) * | 2010-01-14 | 2015-01-28 | Saab Ab | Multifunctional de-icing/anti-icing system of a wind turbine |
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| US5704567A (en) * | 1995-10-16 | 1998-01-06 | The United States Of America As Represented By The Secretary Of The Army | Blade de-icer for rotary wing aircraft |
| JP2001278195A (en) * | 2000-03-29 | 2001-10-10 | Kawasaki Heavy Ind Ltd | Deicer for aircraft |
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| CN110259650A (en) | 2019-09-20 |
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