Wear-resisting device for lightning current transmission unit of blade of wind turbine unit

Abstract

The utility model relates to a wind turbine set blade lightning current transmission unit wear-resisting device which comprises an L-shaped installation frame and an installation plate fixedly arranged on a vertical plate of the installation frame, the installation plate is arranged on the side, away from a transverse plate, of the vertical plate, and a V-shaped included angle is formed between the vertical plate and the upper portion of the installation plate. The upper portion of the vertical plate and the upper portion of the mounting plate are each fixedly provided with a support, a wear-resisting support is fixedly arranged on the outer side of the upper end of each support, and a wear-resisting block is mounted on each wear-resisting support. The support is made of a glass fiber resin material, the wear-resisting block comprises a wear-resisting inner core located in the wear-resisting block and a wear-resisting layer arranged on the side face of the wear-resisting inner core in a sleeving mode, the wear-resisting inner core is made of a brass material, and the wear-resisting layer is made of a nylon material. According to the wind turbine set blade lightning current transmission unit wear-resistant device, release of induced electricity and lightning current generated in the operation process of a wind turbine set is ensured, effective and reliable grounding is also ensured, the consumption of spare parts is reduced, the technical barrier of imported spare parts is avoided, and the purposes of reducing cost and improving efficiency are effectively achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation equipment technical field, concretely relates to a wind turbine set blade lightning current transmission unit wear -resisting device. BACKGROUND

[0002] In the wind turbine set, the lightning protection device of blade is connected with the cabin by lightning current transmission unit (LCTU), when the blade is invaded by lightning, the lightning is introduced into the cabin from the blade through the lightning current transmission unit (LCTU) of blade, and the lightning is finally introduced into the earth from the cabin through the tower drum.Lightning current transmission unit (LCTU) is the special spare parts of Vestas, belongs to imported consumable product, and the price of single group is higher, is 3500 yuan, needs to be replaced when the thickness is less than 5mm during annual inspection, and the annual consumption of single unit is expected to be 3 groups.Therefore, a wind turbine set blade lightning current transmission unit wear -resisting device is needed, which can ensure the reliable grounding of the lightning current of the wind turbine set blade, solve the problems of fast wear of consumable spare parts, complex replacement of easily worn spare parts, high price of imported spare parts and technical barriers. SUMMARY

[0003] The utility model solves the technical problem that provide a kind of wind turbine set blade lightning current transmission unit wear -resisting device, namely ensure the release of induction electric and lightning current during the operation of wind turbine set, also ensure effective and reliable grounding, reduce the consumption of spare parts, avoid the technical barriers of imported spare parts, effectively realize the purpose of reducing cost and increasing efficiency.

[0004] To solve the above problems, the technical scheme adopted by the utility model is:

[0005] A kind of wind turbine set blade lightning current transmission unit wear -resisting device, it includes the mounting bracket of L shape and the mounting plate of being fixed in the riser of mounting bracket, the mounting plate is arranged in the side of riser away from horizontal plate, the riser and mounting plate upper portion are V-shaped included angle;The riser and mounting plate upper portion are respectively fixed with one support, the wear-resistant support is fixed on the outer side of the upper end of the support, and wear-resistant block is installed on the wear-resistant support;The support is made of glass fiber resin material, and the wear-resistant block includes wear-resistant inner core located in the interior and wear-resistant layer sleeved on the side surface of wear-resistant inner core, the wear-resistant inner core is made of brass material, and the wear-resistant layer is made of nylon material.

[0006] As an embodiment of the utility model, the wear-resistant support includes a square mounting block, a first via hole is formed in the upper part of the support, a second via hole corresponding to the first via hole is formed in the middle part of the mounting block, a first pin hole penetrating along the width direction is formed in the middle part of the mounting block, the wear-resistant block further includes a mounting column coaxially fixed to the inner side of the wear-resistant inner core, a second pin hole penetrating is formed in the side wall of the end of the mounting column close to the wear-resistant inner core, a threaded hole and a locking bolt matched with the threaded hole are arranged at the free end of the mounting column, and the mounting column passes through the second via hole and the first via hole in sequence, passes through the first pin hole and the second pin hole through the shaft pin and is limited by the check ring.

[0007] As an embodiment of the utility model, second connecting holes are arranged at the four corners of the mounting block, first connecting holes corresponding one by one to the second connecting holes are formed in the upper part of the support, the mounting block and the support are connected together through the support clamping column, and a flange is arranged in the middle part of the support clamping column.

[0008] As an embodiment of the utility model, the wear-resistant inner core is in a cylindrical shape, mounting holes corresponding to the wear-resistant inner core are arranged in the middle part of the wear-resistant layer, and the wear-resistant layer and the wear-resistant inner core are combined into an integrated whole through hot pressing.

[0009] As an embodiment of the utility model, the wear-resistant layer is a first wear-resistant layer in a circular shape or a second wear-resistant layer in a hexagonal shape.

[0010] As an embodiment of the utility model, the radii of the mounting holes of the first wear-resistant layer and the second wear-resistant layer are 3.4 cm, the outer diameter of the first wear-resistant layer is 4.7 cm, the total length of the second wear-resistant layer is 9.5 cm, the total width is 5 cm, the lengths of the two longer opposite sides in the middle part are 5.5 cm, and the lengths of the other four sides at both ends are equal.

[0011] As an embodiment of the utility model, arc-shaped protrusions with outward arc are arranged in the middle part of the two sides of the mounting block along the axis direction of the first pin hole, and first, second and third arc-shaped grooves corresponding to the protrusions are formed in the inner sides of the wear-resistant inner core, the first wear-resistant layer and the second wear-resistant layer.

[0012] As an embodiment of the utility model, the mounting column and the wear-resistant inner core are made of the same material and are integrally cast, and a cutting plane is arranged on the outer end side surface of the mounting column.

[0013] As an embodiment of the utility model, the support and the mounting plate and the mounting frame are detachably connected together through the bolt assembly.

[0014] As an embodiment of the utility model, a conductive element is connected between the mounting columns on the two supports through the locking bolt.

[0015] The technical scheme has the beneficial effects that:

[0016] The wear-resistant device for the blade lightning current transmission unit of the wind turbine set is provided with a wear-resistant layer made of nylon material, which has the characteristics of high strength, strong wear resistance and chemical corrosion resistance, and is used as the external wear-resistant material of the wear-resistant block, and meets the working condition of serious oil pollution at the position of the fan impeller, and greatly enhances the wear resistance. The wear-resistant inner core is made of brass material, which has the functions of conducting and transmitting lightning current and induction current, and has the characteristics of self-lubrication, excellent conductivity and easy processing, and is used as the internal conductive material of the wear-resistant block, and also meets the working condition of serious oil pollution at the position of the fan impeller, so that the brass material is selected to realize the conductivity. The support is made of glass fiber resin material, and is supported by cutting and supporting the glass fiber pressing sheet, has good support and flexibility, can replace the spring device, is used for supporting and pressing the wear-resistant block, and makes the wear-resistant block be obliquely pressed to the impeller side and the cabin side at a certain pressure.

[0017] The combination of the wear-resistant block and the support not only ensures the release of induction current and lightning current generated during the operation of the wind turbine set, but also ensures effective and reliable grounding, reduces the consumption of spare parts, the spare parts are easy to disassemble and replace, the service life of the wear-resistant block is increased, the overall structure is smaller, material is saved, technical barriers of imported spare parts are avoided, and the purpose of reducing cost and increasing benefit is effectively realized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the utility model.

[0019] Figure 2 is Figure 1 is a local enlarged schematic view of A in the figure.

[0020] Figure 3 is another angle structural schematic view of the utility model.

[0021] Figure 4 is Figure 3 is a local enlarged structural schematic view of B in the figure.

[0022] Figure 5 is a structural schematic view of the wear-resistant support in the utility model.

[0023] Figure 6 is another angle structural schematic view of the wear-resistant support in the utility model.

[0024] Figure 7 is still another angle structural schematic view of the wear-resistant support in the utility model.

[0025] Figure 8 is a structural schematic view of the wear-resistant block in the utility model.

[0026] Figure 9 isFigure 8 Another angle structure diagram of the wear-resistant block.

[0027] Figure 10 Another structure diagram of the wear-resistant block.

[0028] Figure 11 Still another structure diagram of the wear-resistant block.

[0029] Figure 12 Still another structure diagram of the wear-resistant block.

[0030] Wherein: 1 mounting bracket, 101 horizontal plate, 102 vertical plate, 2 mounting plate, 3 support, 301 first via, 302 first connecting hole, 4 connecting plate, 5 bolt assembly, 6 mounting block, 601 protrusion, 7 first pin hole, 8 second via, 9 second connecting hole, 10 support clamping column, 11 flange, 12 wear-resistant inner core, 1201 first arc-shaped groove, 13 mounting column, 1301 cutting plane, 14 second pin hole, 15 locking bolt, 16 first wear-resistant layer, 1601 second arc-shaped groove, 17 second wear-resistant layer, 1701 third arc-shaped groove, 18 shaft pin, 19 retaining ring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described clearly and completely below by combining with specific embodiments.

[0032] As Figures 1-4 The utility model provides a wind turbine blade lightning current transmission unit wear -resisting device, it includes L's mounting bracket 1 and the mounting plate 2 of being fixed in mounting bracket 1's vertical plate 102, the mounting plate 2 is arranged in the side of vertical plate 102 away from horizontal plate 101, the vertical plate 102 and mounting plate 2 upper portion are V-shaped angle, the mounting plate 2 upper portion is curved away from vertical plate 102, the vertical plate 102 and mounting plate 2 upper portion are respectively fixed with a support 3, the support 3 upper end outside is fixed with wear -resisting support, and wear -resisting block is installed on wear -resisting support, the support 3 adopts glass fiber resin material, and wear -resisting block includes wear -resisting inner core 12 located inside and wear -resistant layer that is covered wear -resisting inner core 12 side surface, wear -resisting inner core 12 adopts brass material, and wear -resistant layer adopts nylon material.

[0033] The wear-resistant device provided by the utility model has the advantages that the wear-resistant layer is made of nylon material, the nylon material has the characteristics of high strength, strong wear resistance and chemical corrosion resistance, and is used as the external wear-resistant material of the wear-resistant block, which is suitable for the working condition that the oil stain is serious at the position of the fan impeller, and greatly enhances the wear resistance. The wear-resistant inner core 12 is made of brass material, which has the characteristics of self-lubrication, excellent conductivity and easy processing, and is used as the internal conductive material of the wear-resistant block, which is also suitable for the working condition that the oil stain is serious at the position of the fan impeller, so that the brass material is selected to realize the conductivity. The support 3 is made of glass fiber resin material, and is supported by cutting a glass fiber pressing sheet, has good support and flexibility, can replace the spring device, is used for supporting and pressing the wear-resistant block, and makes the wear-resistant block be obliquely pressed to the impeller side and the cabin side at a certain pressure.

[0034] The wear-resistant device adopts the combination of the wear-resistant block and the support 3, is installed on the wind turbine hub, and the two wear-resistant blocks are pressed on the contact surfaces of the blades and the cabin respectively, so that the release of induced current and lightning current generated during the operation of the wind turbine set is ensured, effective and reliable grounding is ensured, the consumption of spare parts is reduced, the spare parts are easy to disassemble and replace, the service life of the wear-resistant block is increased, the overall structure is smaller and saves materials, technical barriers of imported spare parts are avoided, and the purpose of cost reduction and benefit increase is effectively achieved.

[0035] As shown in the figure, Figures 5-7 The wear-resistant support includes a square mounting block 6, a first through hole 301 is formed in the upper portion of the support 3, and a second through hole 8 corresponding to the first through hole 301 is formed in the middle portion of the mounting block 6; a first pin hole 7 is formed in the middle portion of the mounting block 6 along the width direction, the wear-resistant block further includes a mounting column 13 coaxially and fixedly connected to the inner side of the wear-resistant inner core 12, a second pin hole 14 is formed in the side wall of one end of the mounting column 13 close to the wear-resistant inner core 12, and a threaded hole and a locking bolt 15 matched with the threaded hole are arranged on the free end of the mounting column 13; after the mounting column 13 passes through the second through hole 8 and the first through hole 301 in sequence, the shaft pin 18 passes through the first pin hole 7 and the second pin hole 14 and is limited by the retaining ring 19, the end portion of the shaft pin 18 is provided with a clamping groove, and the retaining ring 19 is an elastic retaining ring and is clamped in the clamping groove.

[0036] Second connecting holes 9 are arranged at four corners of the mounting block 6, first connecting holes 302 corresponding to the second connecting holes 9 are formed in the upper portion of the support 3, the mounting block 6 and the support 3 are connected together through a supporting clamping column 10, and a flange 11 is arranged in the middle portion of the supporting clamping column 10. The flange 11 on the supporting clamping column 10 is annular, is used for supporting the mounting block 6, fixes the mounting block 6 through the supporting clamping column 10, saves the cost and is convenient to disassemble, and in particular, when the supporting clamping column 10 is made of plastic material, the production cost is greatly reduced.

[0037] As Figure 8 , Figure 9 and Figure 11 shown, the wear-resistant inner core 12 is cylindrical, the wear-resistant layer is provided with a mounting hole corresponding to the wear-resistant inner core 12 in the middle, and the wear-resistant layer and the wear-resistant inner core 12 are combined into one through hot pressing.

[0038] The wear-resistant layer has two external designs, which are a first wear-resistant layer 16 in a circular shape or a second wear-resistant layer 17 in a hexagonal shape. The mounting hole radius of the first wear-resistant layer 16 and the second wear-resistant layer 17 is 3.4 cm; the outer diameter of the first wear-resistant layer 16 is 4.7 cm; the total length of the second wear-resistant layer 17 is 9.5 cm, and the total width is 5 cm, wherein the length of the two longer opposite sides in the middle is 5.5 cm, and the length of the other four sides at both ends is equal.

[0039] As further optimization, as shown in Figure 10 and Figure 12 , the mounting block 6 is provided with an arc-shaped protrusion 601 with an outward arc in the middle on both sides along the axis direction of the first pin hole 7, and the wear-resistant inner core 12, the first wear-resistant layer 16 and the second wear-resistant layer 17 are provided with a first arc-shaped groove 1201, a second arc-shaped groove 1601 and a third arc-shaped groove 1701 corresponding to the protrusion 601.

[0040] In this embodiment, the mounting column 13 and the wear-resistant inner core 12 are made of the same material and are integrally cast into shape, and the mounting column 13 is provided with a cutting plane 1301 on the outer end side surface.

[0041] The bracket 3 and the mounting plate 2 are detachably connected together with the mounting frame 1 through the bolt assembly 5, and the bracket 3 includes a plurality of bolts, nuts and a large gasket provided with a plurality of through holes corresponding to the bolts when being mounted, so as to ensure the structural strength of the bracket 3 and prevent it from being broken.

[0042] The mounting columns 13 on the two brackets 3 are connected through the locking bolt 15, and the electrically conductive element can be in the form of an electric wire.

[0043] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A wear-resistant device for a lightning current transmission unit of a wind turbine blade, characterized in that: It includes an L-shaped mounting bracket (1) and a mounting plate (2) fixed on a vertical plate (102) of the mounting bracket (1). The mounting plate (2) is located on the side of the vertical plate (102) away from the horizontal plate (101). The upper part of the vertical plate (102) and the mounting plate (2) form a V-shaped angle. A bracket (3) is fixed on the upper part of the vertical plate (102) and the mounting plate (2). A wear-resistant bracket is fixed on the outer side of the upper end of the bracket (3). A wear-resistant block is installed on the wear-resistant bracket. The bracket (3) is made of glass fiber resin material. The wear-resistant block includes a wear-resistant inner core (12) located inside and a wear-resistant layer sleeved on the side of the wear-resistant inner core (12). The wear-resistant inner core (12) is made of brass material, and the wear-resistant layer is made of nylon material.

2. The wear-resistant device for the lightning current transmission unit of a wind turbine blade according to claim 1, characterized in that: The wear-resistant bracket includes a square mounting block (6). The bracket (3) has a first through hole (301) on its upper part and a second through hole (8) corresponding to the first through hole (301) in the middle part of the mounting block (6). The mounting block (6) has a through first pin hole (7) in the middle part along the width direction. The wear-resistant block also includes a mounting post (13) coaxially fixed to the inside of the wear-resistant inner core (12). The mounting post (13) has a through second pin hole (14) on the side wall near the end of the wear-resistant inner core (12). The free end of the mounting post (13) is provided with a threaded hole and a locking bolt (15) that matches the threaded hole. After the mounting post (13) passes through the second through hole (8) and the first through hole (301) in sequence, it passes through the first pin hole (7) and the second pin hole (14) through the shaft pin (18) and is limited by the retaining ring (19).

3. The wear-resistant device for the lightning current transmission unit of a wind turbine blade according to claim 2, characterized in that: The mounting block (6) has a second connecting hole (9) at each of its four corners. The bracket (3) has a first connecting hole (302) at its upper part that corresponds to the second connecting hole (9). The mounting block (6) and the bracket (3) are connected together by a support post (10). The support post (10) has a flange (11) in the middle.

4. The wear-resistant device for the lightning current transmission unit of a wind turbine blade according to claim 2, characterized in that: The wear-resistant inner core (12) is cylindrical, and the wear-resistant layer has a mounting hole in the middle corresponding to the wear-resistant inner core (12). The wear-resistant layer and the wear-resistant inner core (12) are combined into one piece by hot pressing.

5. The wear-resistant device for the lightning current transmission unit of a wind turbine blade according to claim 4, characterized in that: The wear-resistant layer is a circular first wear-resistant layer (16) or a hexagonal second wear-resistant layer (17).

6. The wear-resistant device for the lightning current transmission unit of a wind turbine blade according to claim 5, characterized in that: The mounting hole radius of the first wear-resistant layer (16) and the second wear-resistant layer (17) is 3.4cm; the outer diameter of the first wear-resistant layer (16) is 4.7cm; the total length of the second wear-resistant layer (17) is 9.5cm and the total width is 5cm, of which the length of the two longer opposite sides in the middle is 5.5cm, and the side lengths of the remaining four sides at both ends are equal.

7. The wear-resistant device for the lightning current transmission unit of a wind turbine blade according to claim 5, characterized in that: The mounting block (6) has an outward-curving protrusion (601) on both sides of the middle part along the axis of the first pin hole 7. The wear-resistant inner core (12), the first wear-resistant layer (16), and the second wear-resistant layer (17) have a first arc groove (1201), a second arc groove (1601), and a third arc groove (1701) corresponding to the protrusion (601).

8. The wear-resistant device for the lightning current transmission unit of a wind turbine blade according to claim 2, characterized in that: The mounting post (13) and the wear-resistant inner core (12) are made of the same material and are integrally cast. The outer side of the mounting post (13) is provided with a cutting plane (1301).

9. The wear-resistant device for the lightning current transmission unit of a wind turbine blade according to claim 1, characterized in that: The bracket (3) and mounting plate (2) are detachably connected to the mounting frame (1) by bolt assembly (5).

10. The wear-resistant device for the lightning current transmission unit of a wind turbine blade according to claim 1, characterized in that: A conductive element is connected between the mounting posts (13) on the two brackets (3) by locking bolts (15).

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