Diversion strip for lightning protection of fan blade

Abstract

The utility model relates to the technical field of thunder and lightning protection, in particular to a flow guide strip for thunder and lightning protection of fan blades, which comprises an insulating base band, a mounting groove is arranged on the upper end face of the insulating base band, a plurality of uniformly distributed placing grooves are arranged on the bottom end face inside the mounting groove, and first adhesives are arranged on the bottom end faces inside the placing grooves. Metal blocks are bonded to the interiors of the multiple containing grooves through first adhesives, insulating pressing strips are arranged in the installation grooves, multiple through holes matched with the metal blocks are formed in the outer walls of the insulating pressing strips in a penetrating mode, second adhesives are arranged on the lower end faces of the insulating pressing strips, and the insulating pressing strips are bonded to the installation grooves through the second adhesives. After the metal block is bonded in the placing groove in the insulating base band through the first bonding agent, the insulating pressing strip is further bonded in the mounting groove in the insulating base band through the second bonding agent to further fix the metal block, so that the metal block is bonded more firmly, and when the metal block is bonded, the metal block can be limited through the placing groove, and bonding is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to lightning protection technical field, specifically disclose a for fan blade lightning protection's fairing. BACKGROUND

[0002] Wind energy is a kind of clean renewable energy, using wind energy generation, has been more and more by the world's attention. Blade is the important component of wind turbine, mainly by composite material is constituted, with the increase of fan capacity, the height of fan hub and the length of fan blade are more and more big, simultaneously, wind turbine is generally installed in open area or mountain top, therefore wind turbine suffers lightning probability is more and more big. According to foreign statistical data, the average annual lightning of every hundred fans suffers the probability of 8%, if wind field is in thunderstorm area, the possibility of blade suffering lightning is greater, lightning has become the important factor of threat to the safe operation of fan.

[0003] Chinese patent CN204921262U discloses a kind of for fan blade lightning protection's fairing, including insulating base strip, one surface of insulating base strip is coated with a layer of adhesive, the upper surface of adhesive is pasted separate metal segment, the gap between adjacent metal segments is filled with adhesive, the two sides of metal segment along the length direction of insulating base strip are covered with adhesive, the fairing for fan blade lightning protection, simple structure, and has good lightning protection performance, long service life.

[0004] The fairing for fan blade lightning protection disclosed in the above document, the metal segment is only bonded to the insulating base strip by a layer of adhesive, which is not firm enough. Moreover, the metal segment cannot be positioned when being bonded, which is inconvenient. Therefore, improvement is needed. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of for fan blade lightning protection's fairing, metal block is pasted in the inside of placement slot after being pasted by first adhesive, further fixed by being bonded with insulating base strip by insulating strip, metal block is more firm, and the metal block can be positioned by placement slot, it is convenient to bond metal block.

[0006] The utility model is implemented as follows: a kind of for fan blade lightning protection's fairing, including insulating base strip, the upper end surface of insulating base strip is equipped with installation slot, the bottom end surface of the inside of installation slot is equipped with multiple placement slots distributed evenly, the bottom end surface of the inside of multiple placement slots is all provided with first adhesive, the inside of multiple placement slots is all bonded with metal block by first adhesive, the inside of installation slot is provided with insulating strip, the outer wall of insulating strip is equipped with multiple through holes matched with metal block, the lower end surface of insulating strip is provided with second adhesive, and insulating strip is bonded with installation slot by second adhesive.

[0007] In order to facilitate the fixing of the insulating base strip on the wind power blade, as a kind of flow guide strip for lightning protection of fan blade of the utility model preferably, the lower end surface of the insulating base strip is pasted with double-sided adhesive, and the lower end surface of the double-sided adhesive is pasted with release paper.

[0008] In order to prevent the metal block from being pulled out of the through hole, as a kind of flow guide strip for lightning protection of fan blade of the utility model preferably, the metal block comprises a metal top block and a metal bottom block, the metal bottom block is larger than the metal top block, the metal bottom block is equal in size to the placement groove, and the metal top block is equal in size to the through hole.

[0009] In order to make the insulating base strip and the insulating pressing strip have good insulation, as a kind of flow guide strip for lightning protection of fan blade of the utility model preferably, the insulating base strip and the insulating pressing strip are both made of polyethylene material.

[0010] In order to facilitate the first adhesive and the second adhesive to have good adhesive performance, as a kind of flow guide strip for lightning protection of fan blade of the utility model preferably, the first adhesive and the second adhesive are both epoxy resin adhesives.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The flow guide strip for lightning protection of fan blade is fixed more firmly by the first adhesive, and the metal block is limited by the placement groove when the metal block is adhered, so that the metal block is adhered conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the overall structural drawing of the flow guide strip for lightning protection of fan blade of the utility model;

[0014] Fig. 2 It is the sectional view of the flow guide strip for lightning protection of fan blade of the utility model;

[0015] Fig. 3 It is the structural drawing of the metal block of the utility model.

[0016] In the drawing, 1, insulating base strip; 2, insulating pressing strip; 3, placement groove; 4, through hole; 5, metal block; 501, metal top block; 502, metal bottom block; 6, double-sided adhesive; 7, release paper; 8, first adhesive; 9, second adhesive. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples.

[0018] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, in the description of the utility model, the meaning of "a plurality of" is two or more than two, unless otherwise explicitly and specifically limited.

[0019] Please refer to Figs. 1-3 A deflector strip for fan blade lightning protection, including the insulating base tape 1, the upper end face of the insulating base tape 1 is provided with a mounting groove, the bottom end face inside the mounting groove is provided with a plurality of evenly distributed placing grooves 3, the bottom end face inside the plurality of placing grooves 3 is provided with a first adhesive 8, the inside of the plurality of placing grooves 3 is adhered with a metal block 5 through the first adhesive 8, the inside of the mounting groove is provided with an insulating pressing strip 2, a plurality of through holes 4 matched with the metal block 5 are formed through the outer wall of the insulating pressing strip 2, the lower end face of the insulating pressing strip 2 is provided with a second adhesive 9, and the insulating pressing strip 2 is adhered with the mounting groove through the second adhesive 9.

[0020] In this embodiment: when the metal block 5 is adhered on the insulating base tape 1, first, the first adhesive 8 is coated on the inside bottom end face of the placing groove 3, then the metal block 5 is adhered in the placing groove 3, then the second adhesive 9 is coated on the lower end face of the insulating pressing strip 2, then the insulating pressing strip 2 is adhered in the mounting groove of the insulating base tape 1, so that the upper end of the metal block 5 passes out of the through hole 4, and the lower end of the metal block 5 is further fixed through the insulating pressing strip 2, so that the metal block 5 is adhered more firmly, and when the metal block 5 is adhered, the placing groove 3 can limit the metal block 5, facilitating pasting.

[0021] As a technical optimization scheme of the utility model, the lower end face of the insulating base tape 1 is pasted with double-sided adhesive tape 6, and the lower end face of the double-sided adhesive tape 6 is pasted with release paper 7.

[0022] In this embodiment: the release paper 7 is torn off, then the insulating base tape 1 is pasted on the position needing installation on the fan blade through the double-sided adhesive tape 6, and the insulating base tape 1 is repeatedly pressed with a certain force, so as to ensure firm adhesion.

[0023] As a technical optimization scheme of the utility model, the metal block 5 includes a metal top block 501 and a metal bottom block 502, the metal bottom block 502 is larger than the metal top block 501, the metal bottom block 502 is equal in size to the placement groove 3, and the metal top block 501 is equal in size to the through hole 4.

[0024] In the embodiment, by making the metal bottom block 502 larger than the metal top block 501 and making the metal top block 501 equal in size to the through hole 4, the metal block 5 is further fixed by the insulating pressing strip 2.

[0025] As a technical optimization scheme of the utility model, the insulating base strip 1 and the insulating pressing strip 2 are both made of polyethylene.

[0026] In the embodiment, by making the insulating base strip 1 and the insulating pressing strip 2 both polyethylene, the insulating base strip 1 and the insulating pressing strip 2 have good insulation.

[0027] As a technical optimization scheme of the utility model, the first adhesive 8 and the second adhesive 9 are both epoxy resin adhesives.

[0028] In the embodiment, by making the first adhesive 8 and the second adhesive 9 both epoxy resin adhesives, the harsh environment such as strong wind, low temperature and radiation can be adapted.

[0029] The working principle and use process of the utility model are as follows: when the metal block 5 is adhered to the insulating base strip 1, the first adhesive 8 is first coated on the inner bottom end face of the placement groove 3, then the metal block 5 is adhered in the placement groove 3, then the second adhesive 9 is coated on the lower end face of the insulating pressing strip 2, then the insulating pressing strip 2 is adhered in the mounting groove of the insulating base strip 1, the upper end of the metal block 5 is made to pass out of the through hole 4, the lower end of the metal block 5 is further fixed by the insulating pressing strip 2, the metal block 5 is adhered more firmly, when the metal block 5 is adhered, the metal block 5 can be limited by the placement groove 3, and the adhesion is facilitated.

[0030] When the insulating base strip 1 is installed on the blade, the release paper 7 is torn off, then the insulating base strip 1 is pasted on the position needing installation on the fan blade by the double-sided adhesive tape 6, and the insulating base strip 1 is repeatedly pressed by a certain force, so that the adhesion is ensured to be firm.

[0031] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A fairing strip for lightning protection of a wind turbine blade, comprising an insulating base strip (1), characterized in that: The upper end face of the insulating base strip (1) is provided with a mounting groove, the bottom end face of the interior of the mounting groove is provided with a plurality of uniformly distributed placing grooves (3), the bottom end face of the interior of the plurality of placing grooves (3) is provided with a first adhesive (8), the interior of the plurality of placing grooves (3) is adhered with a metal block (5) through the first adhesive (8), the interior of the mounting groove is provided with an insulating pressing strip (2), a plurality of through holes (4) matched with the metal block (5) are provided through the outer wall of the insulating pressing strip (2), the lower end face of the insulating pressing strip (2) is provided with a second adhesive (9), and the insulating pressing strip (2) is adhered with the mounting groove through the second adhesive (9).

2. A fairing strip for lightning protection of a wind turbine blade according to claim 1, characterized in that: The lower end face of the insulating base strip (1) is pasted with double-sided adhesive tape (6), and the lower end face of the double-sided adhesive tape (6) is pasted with release paper (7).

3. A deflector strip for lightning protection of a wind turbine blade according to claim 1, characterized in that: The metal block (5) comprises a metal top block (501) and a metal bottom block (502), the metal bottom block (502) is larger than the metal top block (501), the metal bottom block (502) is equal in size to the placing groove (3), and the metal top block (501) is equal in size to the through hole (4).

4. A deflector strip for lightning protection of a wind turbine blade according to claim 1, characterized in that: The insulating base strip (1) and the insulating pressing strip (2) are both polyethylene materials.

5. A deflector strip for lightning protection of a wind turbine blade according to claim 1, characterized in that: The first adhesive (8) and the second adhesive (9) are both epoxy resin adhesives.

Images