CN214660606U - Detachable wind power blade protection device - Google Patents

Abstract

The utility model discloses a can dismantle wind-powered electricity generation blade protection device, including first protective housing, second protective housing and composite protection film, first protective housing and second protective housing cross-section are the U-shaped, and first protective housing and the detachable connection of second protective housing U-shaped opening part form the holding chamber that suits with the blade shape, and composite protection film bonds outside first protective housing and second protective housing. The utility model provides a wind-powered electricity generation blade protection device convenient to remove and removable, its simple structure, quality are light, with low costs, have reduced the maintenance cost of wind-powered electricity generation blade, have prolonged the life-span of wind-powered electricity generation blade.

Description

Detachable wind power blade protection device

The technical field is as follows:

the utility model belongs to the technical field of wind-force device, concretely relates to can dismantle wind-powered electricity generation blade protection device.

Background art:

the application of environment-friendly new energy is increasingly wide, and wind power generation becomes another important power source after thermal power, nuclear power and hydroelectric power, and is the central importance of the development of the power industry. The wind power blade is used as a core component of wind power equipment, and plays a role in practical application. Wind power blades, especially the leading edges of the blades, are often constantly impacted by sand, raindrops, hailstones and other objects in the use process. Because the linear velocity of the tip of the blade can reach 100 m/s at most, and the impact force of an object impacted at high speed on the blade is very large, the wind power blade with the original design life of decades is only used for years, the surface of the blade is damaged by cracks, pot holes and the like, the original excellent pneumatic performance of the wind power blade does not exist, and the power generation efficiency is seriously influenced. Meanwhile, the damage of the blade surface and the attachment of dust, ice blocks and the like due to the pits cause the dirt resistance and the icing resistance of the blade to be remarkably reduced, and the power generation efficiency is further reduced. The occurrence of the conditions of blade icing and the like can also change the balance of the moments of the three blades, so that the stability of the fan during rotation is poor, and tower collapse occurs under extreme conditions.

The existing blade damage solution at present is mainly maintained by adopting a traditional method of paint repair. However, the coating applied is thin, poor in resilience and low in overall strength, so that the life cycle of the coating protective layer after maintenance is short, and the coating protective layer can be damaged again in a short time under continuous impact. With the increase of the damage degree, the pneumatic performance of the blade is reduced, the blade still needs to be brushed again, the maintenance cost is high, and the blade cannot be used once and for all.

The utility model has the following contents:

the utility model discloses aim at overcomes the shortcoming that prior art exists, seeks to design one kind and can dismantle wind-powered electricity generation blade protection device, and its piecemeal protects wind-powered electricity generation blade, in time changes and demolishs the blade part of damage, reduces the maintenance cost.

In order to realize the above-mentioned purpose, the utility model relates to a can dismantle wind-powered electricity generation blade protection device, including first protective housing and second protective housing, first protective housing and second protective housing cross-section are the U-shaped, and first protective housing and the detachable connection of second protective housing U-shaped opening part form the holding chamber that suits with the blade shape.

Further, wind-powered electricity generation blade protection device still includes compound protection film, and compound protection film bonds outside first protective housing and the second protective housing.

Further, the composite protective film includes, but is not limited to, one of a PET protective film, a BOPP protective film, a UPE protective film, a PU protective film, a silicone type protective film, and an acrylic type protective film.

Specifically, evenly set up a plurality of draw-in groove along first protective housing opening edge, correspondingly, evenly set up a plurality of buckle along second protective housing opening edge, the buckle card is gone into the draw-in groove that corresponds, is connected first protective housing and second protective housing.

Further, the first protective shell and the second protective shell are made of hard plastics, semi-hard plastics, foaming materials or light alloys.

Compared with the prior art, the utility model following beneficial effect has:

(1) the wind power blade protection device convenient to remove and replace is simple in structure, light in weight and low in cost, and reduces the maintenance cost of the wind power blade;

(2) the composite protective film is directly adhered to the wind power blade protecting device, when the composite film is damaged to a certain degree, the composite film at the damaged part is replaced on the premise of ensuring the overall aerodynamic performance of the blade, the cost is saved, and the service life of the blade is prolonged.

Description of the drawings:

fig. 1 is a schematic structural diagram of a wind turbine blade protection device according to embodiment 1.

FIG. 2 is a side view of a composite die according to example 3.

Fig. 3 is a schematic view of a composite die support layer flow channel structure according to example 3.

FIG. 4 is a schematic view of the composite die elastomer layer flow channel structure according to example 3.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following specific embodiments and accompanying drawings.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1:

as shown in fig. 1, the detachable wind turbine blade protection device related to the embodiment includes a first protection shell 1 and a second protection shell 2, the cross sections of the first protection shell 1 and the second protection shell 2 are both U-shaped, and the U-shaped openings of the first protection shell 1 and the second protection shell 2 are detachably connected to form an accommodating cavity adapted to the shape of the blade, i.e., the accommodating cavity just can coat the blade, so as to prevent the blade from being damaged.

Further, the detachable connection is clamping connection, threaded connection and the like. Specifically, evenly set up a plurality of draw-in groove 3 along 1 opening edge of first protective housing, correspondingly, evenly set up a plurality of buckle 4 along 2 opening edges of second protective housing, buckle 4 card is gone into corresponding draw-in groove 3, connects first protective housing 1 and second protective housing 2.

Further, the first protective case 1 and the second protective case 2 are made of hard plastic (e.g., phenolic plastic, polyurethane plastic, epoxy plastic, unsaturated polyester plastic, furan plastic, silicone resin, acryl resin, etc., and plastic modified by using silicone resin or acryl resin as a body), semi-hard plastic, foamed material, or light alloy.

Example 2:

the wind power blade protection device of embodiment 1 further comprises a composite protective film, and the composite protective film is bonded on the wind power blade protection device. The bonding process is divided into two conditions, wherein the first condition is that the composite protective film is integrally bonded on the wind power blade before the blade leaves a factory; the other method is that the adhesive flows uniformly between the blade and the protective film by adopting a vacuum infusion mode, and the method can be used before the blade leaves a factory and can also be used in the outdoor maintenance process.

Further, the composite protective film is an existing protective film, and the existing protective film includes, but is not limited to, one of a PET protective film, a BOPP protective film, a UPE protective film, a PU protective film, a silicone type protective film, and an acrylic type protective film. Or the novel wind power blade protective film disclosed in embodiment 3, which has the advantages of light weight, low noise, static resistance, impact resistance, scaling resistance, corrosion resistance, low temperature resistance and the like.

Example 3:

the wind power blade protective film related to the embodiment comprises a supporting layer and an elastic layer, wherein the supporting layer is made of a material with certain strength, and the elastic layer comprises but is not limited to one of a thermoplastic elastic layer, a rubber layer and a foaming layer.

Further, the wind power blade protective film is directly prepared by a one-step method, and specifically comprises the following steps: a preparation method of a wind power blade protective film specifically comprises the following steps:

(1) pouring 80-100 parts of main material of the supporting layer, 0.5-10 parts of antioxidant, 1-8 parts of disentangling agent, 0.5-5 parts of colorant, 2-15 parts of lubricant and 0-5 parts of anti-aging agent into a mixer, stirring for 5-60 minutes, conveying the mixture into a storage bin through a feeding machine, conveying the mixture into a die head through a double-screw extruder for extrusion, and granulating and drying the mixture through a water ring cutter to obtain modified raw material particles of the supporting layer; different screw combinations are designed according to the characteristics of raw materials and use requirements, the temperature setting range of each heating interval of the double-screw extruder is 150-290 ℃, the rotating speed of the double-screw extruder is set to be 30-200rpm, and the feeding frequency setting interval is 2-80 Hz;

(2) conveying the modified supporting layer raw material particles into a hot air dryer with temperature control through a feeding machine for drying for 48-96 hours, removing water, then conveying the dried supporting layer raw material particles into a composite die head through a single-screw extruder, a melt pipeline, a metering pump and a screen changer; the temperature setting range of different intervals of the single screw extruder is between 150 ℃ and 290 ℃, the rotating speed is set to be between 2 and 200 revolutions per minute, and the torque range is set to be between 2 and 150 Gpa;

(3) conveying raw material particles of the elastic layer into a hot air dryer with temperature control through a feeding machine for drying for 48-96 hours, removing water, then conveying the raw material particles to a composite die head through a single-screw extruder, a melt pipeline, a metering pump and a screen changer; the temperature setting range of different intervals of the single screw extruder is between 150 ℃ and 290 ℃, the rotating speed is set to be between 2 and 200 revolutions per minute, and the torque range is set to be between 2 and 150 Gpa;

(4) extruding the modified supporting layer raw material particles in the step (2) and the elastic layer raw material particles in the step (3) at the same time in a compounding die head to obtain a composite film containing the supporting layer and the elastic layer, wherein the temperature of the compounding die head is set to be 150-290 ℃, the extruding angle of the composite film can be selected to be horizontal or vertical or inclined, the extruding width of the composite film can be 0.2-3m, and the extruding thickness can be 0.2-10 mm;

(5) and after the composite film is extruded, directly entering a multi-roll calender for extrusion compounding, or after longitudinal drafting, entering the multi-roll calender for extrusion compounding, and finally cutting and rolling by a rolling machine to prepare the required composite protective film coiled material.

Further, the main material of the support layer in the step (1) includes, but is not limited to, one or more of polyethylenes, polytetrafluoroethylenes, glass fibers, carbon fibers, and epoxy composite materials, in particular, high molecular weight polyethylene with a viscosity average molecular weight of 100-.

Further, when the elastic layer is a thermoplastic elastic layer, the raw material particles of the elastic layer are prepared from 80-100% of thermoplastic elastic layer main materials and 0-15% of cross-linking agents, the thermoplastic elastic layer main materials include but are not limited to one or more of aromatic olefins (SBS, SIS, SEBS, SEPS), aliphatic olefins (TPB, TPI), vinyl chloride (TPVC, TCPE), urethanes (TPU), esters (TPEE), amides (TPAE), organic fluorine (TPF), silicones, thermoplastic vulcanized rubber, and the cross-linking agents include but are not limited to one or more of sulfur, peroxides, thermosetting resins, thiourea derivatives, amines, and bisphenols; when the elastic layer is a rubber layer, raw material particles of the elastic layer are prepared from 80-100% of rubber layer main materials and 0-15% of cross-linking agents, wherein the rubber layer main materials comprise but are not limited to one or more of ethylene propylene rubber, ethylene propylene diene monomer rubber, polyacrylate rubber, fluorocarbon rubber, nitrile rubber, hydrogenated nitrile rubber, carboxyl nitrile rubber, hydrogenated carboxyl nitrile rubber, natural rubber, ethyl vinyl rubber, chlorinated polyethylene rubber, chlorosulfonyl polyethylene rubber, butyl rubber, silicone rubber, fluorosilicone rubber, chloroprene rubber, epichlorohydrin rubber, polyurethane rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, polyurethane rubber and chlorohydrin rubber, and the cross-linking agents comprise but are not limited to one or more of sulfur, peroxide, thermosetting resin, thiourea derivatives, amines and bisphenol; when the elastic layer is a foamed layer, the raw material particles of the elastic layer are prepared from a foaming material, a catalyst and a foaming agent, wherein the foaming material includes, but is not limited to, a structural foam material (PVC, PET, PMI, SAN, PEI, PI, PUR and the like) and a flexible foam material. The soft foaming material is prepared by mixing foaming rubber and foaming plastic with a catalyst and a foaming agent and carrying out a physical foaming or cross-linking foaming process.

Further, the antioxidant in step (1) includes a primary antioxidant and a secondary antioxidant, wherein the primary antioxidant includes but is not limited to one or more of antioxidant 264, antioxidant 1076, antioxidant CA, antioxidant 330, antioxidant MEB, antioxidant HBP, antioxidant TBM, antioxidant 3114, antioxidant 300, antioxidant 1010, antioxidant HLS, antioxidant HSS, antioxidant MMB, antioxidant DOD and antioxidant EBP, the secondary antioxidant includes but is not limited to one or more of antioxidant TNP, antioxidant TBP, antioxidant DPD and antioxidant DLTDP, the lubricant includes but is not limited to one or more of paraffin oil, paraffin wax, polyethylene wax, chlorinated paraffin wax, natural paraffin wax, chlorinated hydrocarbon, fluorinated hydrocarbon and paraffin hydrocarbon, the disentangle includes but is not limited to one or more of graphene, non-metallic nano-particles, graphene oxide and the like, the colorant includes but is not limited to titanium dioxide, and the like, and the colorant includes but is not limited to titanium dioxide, and the like, One or more of calcium nitrate, calcium carbonate, zinc powder (zinc oxide), cadmium red, ferric oxide, carbon black and the like.

Further, the multiple of the longitudinal drafting in the step (5) can be between 0.02 and 50 times, the number of the multi-roll calendering rolls is between 2 and 12, the roll temperature is set to be between 40 and 100 ℃, the roll gap is set to be between 0.1 and 5mm, the diameter of the roll is between 0.04 and 4m, the width of the roll is between 0.25 and 8m, the surface of one or more rolls can be a mirror surface roll, or a combination of the mirror surface roll and a roll with reticulate patterns or convex points or concave point surface rolls, the reticulate patterns include but are not limited to one or more combinations of squares, diamonds, circles and irregular shapes, and the concave points or convex points are one or more combinations of cylinders, meteorite pits, cones and inclined trapezoids.

Further, after rolling in the step (5), treating either one or both of the front surface and the back surface of the composite film by using a corona machine, or carrying out plasma treatment on either one or both of the front surface and the back surface of the composite film, so as to reduce the surface energy, change the printing energy of surface objects according to different application environments, rearrange the molecular structure, generate more polar parts and remove surface dirt.

Further, a glue spreader is adopted to perform glue spreading treatment on one side of the composite film, the glue can be selected from hot melt glue, single-component glue, double-component glue and the like, and the glue spreading amount is set to be 10-400g/m²The coating method includes, but is not limited to, full coating, spiral coating, interval stripe coating, dot coating or a combination of multiple coating methods, after coating, a release film can be attached to the surface of the adhesive, the material of the release film is selected from polyester or polyethylene, and the release film can be colorless, transparent or colored, or opaque or colored according to the use requirement.

Further, as shown in fig. 2 to 4, according to the composite die head prepared by the method, the composite die head comprises a supporting layer die head 6, an elastic layer die head 7 and a composite die lip 5, the composite die lip 5 is composed of two flat feeding channels 501 and a flat discharging channel 502, outlets of the two feeding channels 501 are both communicated with inlets of the discharging channel 502, the supporting layer die head 6 and the elastic layer die head 7 are fixedly arranged in sequence from left to right, bottoms of the supporting layer die head 6 and the elastic layer die head 7 are respectively communicated with one feeding channel 501 of the composite die lip 5, each die head comprises a runner 601 (or 701) and a runner manifold 602 (or 702), outlets of the runners are communicated with inlets of the runner manifold, the runner manifold 602 (or 702) is in a coat hanger type structure or a fishtail type structure, the inlets are narrow, the outlets are flat, the width of the feeding channels 501 is smaller than that of the runner manifold 602 (or 702), the width of the discharging channel 502 is smaller than that of the feeding channels 501, the surface of each die cavity is provided with a plurality of arc-shaped flow blocking blocks so as to adjust the flow velocity of the materials, and generally, the fluidity is gradually reduced along the flow-out direction of the die, and the fluidity of the runner manifold is gradually reduced from the center to two sides. And the design of a single runner is carried out according to the material fluidity difference of different layers, so that the in-mold co-extrusion can be normally carried out on the basis of not adding any lubricant, and the uniformity of the thickness is ensured.

Claims (5)

1. The utility model provides a can dismantle wind-powered electricity generation blade protection device which characterized in that, includes first protective housing and second protective housing, and first protective housing and second protective housing cross-section are the U-shaped, and first protective housing and the detachable connection of second protective housing U-shaped opening part form the holding chamber that suits with the blade shape.

2. The detachable wind power blade protection device according to claim 1, further comprising a composite protection film, wherein the composite protection film is adhered to the first protection shell and the second protection shell.

3. The detachable wind blade protection device according to claim 2, wherein the composite protection film comprises one of a PET protection film, a BOPP protection film, a UPE protection film, a PU protection film, a silicone type protection film, and an acrylic type protection film.

4. The detachable wind power blade protection device according to claim 3, wherein a plurality of clamping grooves are uniformly formed along the edge of the opening of the first protection shell, correspondingly, a plurality of buckles are uniformly formed along the edge of the opening of the second protection shell, and the buckles are clamped into the corresponding clamping grooves to connect the first protection shell and the second protection shell.

5. The detachable wind blade protection device of claim 4, wherein the first and second protective shells are rigid plastic, semi-rigid plastic, foamed material, or lightweight alloy.

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