CN113001995A - Wind-powered electricity generation blade composite protection film and can dismantle wind-powered electricity generation blade protection device - Google Patents
Wind-powered electricity generation blade composite protection film and can dismantle wind-powered electricity generation blade protection device Download PDFInfo
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- CN113001995A CN113001995A CN202110330330.7A CN202110330330A CN113001995A CN 113001995 A CN113001995 A CN 113001995A CN 202110330330 A CN202110330330 A CN 202110330330A CN 113001995 A CN113001995 A CN 113001995A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
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Abstract
The invention discloses a wind power blade composite protective film and a detachable wind power blade protective device. The composite film, the first fixed ribs, the second fixed ribs, the grid plates and the skin jointly form the detachable wind power blade protection device, elastic layer raw material particles and supporting layer raw material particles are extruded together through a special die head to obtain a composite protection film, the adhesive force between two layers of the composite film is strong, and the two layers of the composite film mutually exert a synergistic effect to realize effective protection of the wind power blade.
Description
The technical field is as follows:
the invention belongs to the technical field of wind power devices, and particularly relates to a wind power blade protective film and a detachable wind power blade protective 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 invention content is as follows:
the invention aims to overcome the defects in the prior art, and seeks to design a detachable wind power blade protection device which protects wind power blades in blocks, timely replaces and detaches damaged blade parts and reduces maintenance cost.
In order to achieve the purpose, the composite protective film for the wind power blade 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 one of a thermoplastic elastic layer, a rubber layer and a foaming layer.
The preparation method of the composite protective film for the wind power blade 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.
The composite die head comprises a supporting layer die head, an elastic layer die head and a composite die lip, wherein the composite die lip is composed of two flat feeding channels and a flat discharging channel, outlets of the two feeding channels are communicated with inlets of the discharging channel, the supporting layer die head and the elastic layer die head are fixedly arranged on the left and right in sequence, the bottoms of the supporting layer die head and the elastic layer die head are communicated with the feeding channel of the composite die lip respectively, each die head comprises a runner and a runner manifold, outlets of the runners are communicated with the inlets of the runner manifolds, the runner manifolds are of a coat hanger type structure or a fishtail type structure, the inlets are narrow, the outlets are flat, the width of the feeding channel is smaller than that of the runner manifold, the width of the discharging channel is smaller than that of the feeding channel, and a plurality of.
The invention relates to a latticed detachable wind power blade protection device which comprises a first fixing rib, a second fixing rib, a grid plate, a skin and a wind power blade composite protection film, wherein a plurality of first fixing ribs are fixedly arranged along the direction vertical to the length direction of a blade, a plurality of second fixing ribs are fixedly arranged along the direction parallel to the length direction of the blade, the first fixing ribs and the second fixing ribs are connected to form a latticed protection support which is matched with the shape of the blade and comprises a plurality of grids, the grid plate is fixed in the grids and detachably connected with the first fixing ribs and the second fixing ribs on the periphery of the grids, the skin is fixedly attached to the grid plate to cover the whole wind power blade protection device, and the wind power blade composite protection film is bonded to the skin.
The latticed detachable wind power blade protection device adopts firm connection methods such as welding and threaded connection at the joint of the first fixing rib and the second fixing rib, and a connecting angle bar is fixedly arranged at the joint of the first fixing rib and the second fixing rib.
Furthermore, a clamping groove is formed in the center of the first fixing rib and the center of the second fixing rib corresponding to each grid, correspondingly, a buckle is arranged in the center of the side edge of the grid plate, the buckle is clamped into the corresponding clamping groove, and the grid plate is fixed on the first fixing rib and the second fixing rib.
Further, the grid plate is made of rigid plastic, semi-rigid plastic or foaming material.
Compared with the prior art, the invention has the following beneficial effects:
(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) directly paste compound protection film on wind-powered electricity generation blade protection device, wind-powered electricity generation blade leading edge part or whole wind-powered electricity generation blade, when the complex film at a certain position is impaired to reach the certain degree, under the prerequisite of guaranteeing the whole aerodynamic performance of blade, only need change the complex film at damage position, practice thrift the maintenance cost, extension blade life.
(3) The composite film with the double-layer structure is directly extruded through the composite die head, the bonding force between two layers of the composite film is strong, and the two layers of the composite film are mutually synergistic, so that the wind power blade is effectively protected.
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 invention is further illustrated by the following specific examples in combination with the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention.
Example 1:
as shown in fig. 1, the wind-powered electricity generation blade protection device can be dismantled to latticed that this embodiment relates to, including first fixed rib 1, second fixed rib 2, waffle slab 3 and covering, along the fixed a plurality of first fixed ribs 1 that set up of perpendicular to blade length direction, along being on a parallel with the fixed a plurality of second fixed ribs 2 that set up of blade length direction, first fixed rib and the handing-over of second fixed rib form the netted protection support that contains a plurality of net that suits with the blade shape, waffle slab 3 is fixed in the net, and with the detachable connection of first fixed rib 1 and second fixed rib 2 around the net, covering is fixed attached on waffle slab 3, with whole wind-powered electricity generation blade protection device cladding.
Furthermore, the joint of the first fixing rib 1 and the second fixing rib 2 adopts a firm connection method such as welding, threaded connection and the like, and a connection angle bar is fixedly arranged at the joint of the first fixing rib 1 and the second fixing rib 2, so that the stability and the strength of the grid are further improved. Specifically, the detachable connection is clamping connection, threaded connection and the like. Specifically, a clamping groove 4 is arranged at the center of a first fixing rib 1 and a second fixing rib 2 corresponding to each grid, correspondingly, a buckle 5 is arranged at the center of the side edge of a grid plate 3, the buckle 4 is clamped into the corresponding clamping groove 3, and the grid plate 3 is fixed on the first fixing rib 1 and the second fixing rib 2.
Furthermore, the grid plate is made of hard plastics (such as phenolic plastics, polyurethane plastics, epoxy plastics, unsaturated polyester plastics, furan plastics, organic silicon resin, propenyl resin and the like, and plastics modified by taking the organic silicon resin or the propenyl resin as a body), semi-hard plastics or foaming materials.
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, 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 8, the composite die lip 8 is composed of two flat feeding channels 801 and a flat discharging channel 802, outlets of the two feeding channels 801 are both communicated with inlets of the discharging channel 802, 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 801 of the composite die lip 8, 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 602 (or 702), 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 801 is smaller than that of the runner manifold 602 (or, 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 (7)
1. The composite protective film for the wind power blade is characterized by comprising a supporting layer and an elastic layer, wherein the supporting layer is made of a material with certain strength, and the elastic layer comprises one of a thermoplastic elastic layer, a rubber layer and a foaming layer.
2. The composite protective film for the wind power blade according to claim 1, wherein the preparation method of the composite protective film for the wind power blade 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.
3. The composite protective film for the wind power blade according to claim 2, wherein the composite die head comprises a supporting layer die head, an elastic layer die head and a composite die lip, the composite die lip comprises two flat feeding channels and a flat discharging channel, outlets of the two feeding channels are communicated with inlets of the discharging channel, the supporting layer die head and the elastic layer die head are fixedly arranged in sequence from left to right, bottoms of the supporting layer die head and the elastic layer die head are respectively communicated with one feeding channel of the composite die lip, each die head comprises a runner and a runner manifold, outlets of the runner are communicated with an inlet of the runner manifold, the runner manifold is of a clothes hanger type structure or a fishtail type structure, the inlet is narrow, the outlets are flat, the width of the feeding channels is smaller than that of the runner manifold, the width of the discharging channel is smaller than that of the feeding channels, and a plurality of arc-shaped flow blocking.
4. A detachable wind power blade protection device is characterized by comprising a first fixing rib, a second fixing rib, a grid plate, a skin and the wind power blade composite protection film according to any one of claims 1 to 3, wherein the first fixing ribs are fixedly arranged in the direction perpendicular to the length direction of the blade, the second fixing ribs are fixedly arranged in the direction parallel to the length direction of the blade, the first fixing ribs and the second fixing ribs are connected to form a mesh-shaped protection support which is matched with the shape of the blade and comprises a plurality of grids, the grid plate is fixed in the grids and detachably connected with the first fixing ribs and the second fixing ribs on the periphery of the grids, the skin is fixedly attached to the grid plate, the whole wind power blade protection device is coated, and the wind power blade composite protection film is bonded to the skin.
5. The detachable wind power blade protection device according to claim 4, wherein a joint of the first fixing rib and the second fixing rib adopts a firm connection method such as welding, screwing and the like, and a connection angle is fixedly arranged at the joint of the first fixing rib and the second fixing rib.
6. The detachable wind power blade protection device according to claim 4, wherein a clamping groove is formed in the center of the first fixing rib and the second fixing rib corresponding to each grid, and correspondingly, a buckle is arranged in the center of the side edge of the grid plate and clamped into the corresponding clamping groove, so that the grid plate is fixed on the first fixing rib and the second fixing rib.
7. The removable wind blade protection device of claim 4, wherein the mesh panel is a rigid plastic, a semi-rigid plastic, or a foam material.
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| CN202110330330.7A CN113001995A (en) | 2021-03-29 | 2021-03-29 | Wind-powered electricity generation blade composite protection film and can dismantle wind-powered electricity generation blade protection device |
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| CN202110330330.7A CN113001995A (en) | 2021-03-29 | 2021-03-29 | Wind-powered electricity generation blade composite protection film and can dismantle wind-powered electricity generation blade protection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114589938A (en) * | 2022-03-14 | 2022-06-07 | 洛阳双瑞风电叶片有限公司 | Front edge protection wind power blade and forming method thereof |
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| CN114589938A (en) * | 2022-03-14 | 2022-06-07 | 洛阳双瑞风电叶片有限公司 | Front edge protection wind power blade and forming method thereof |
| CN114589938B (en) * | 2022-03-14 | 2024-03-22 | 厦门双瑞风电科技有限公司 | Front edge protection wind power blade and forming method thereof |
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Inventor after: Wu Jianming Inventor after: Wang Xu Inventor after: Zheng Dejuan Inventor before: Wu Jianming Inventor before: Wang Xu Inventor before: Zheng Dejuan Inventor before: Li Yilin |
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Application publication date: 20210622 |