CN210686192U

CN210686192U - Aerogenerator blade with lightning-arrest function

Info

Publication number: CN210686192U
Application number: CN201921733819.3U
Authority: CN
Inventors: 田志杰; 王岩; 田顺杰; 马骊娜; 刘健
Original assignee: Hua Zhong State Power Group Co ltd
Current assignee: Hua Zhong State Power Group Co ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-06-05
Anticipated expiration: 2029-10-16

Abstract

The utility model relates to a wind power generation equipment technical field, a aerogenerator blade with lightning-arrest function, which comprises a blade, the upper and lower edge and the most advanced edge of blade all are provided with and connect the sudden strain of a muscle area, and the blade keeps away from most advanced one end and is provided with root connection piece, the inside of blade is provided with the downlead, the outside of downlead is provided with the lag, and the last downside of downlead all is provided with two root wires, the lag is close to the most advanced one end of blade and is provided with insulating spacer block, the outside that root connection piece is close to the one end of blade is provided with limit stop, and the root connection piece keeps away from the one end annular of blade and is provided with a plurality of connecting rods, the inboard that root connection piece is close to the one end. All be provided with the lightning-receiving area at the upper and lower edge of blade and most advanced edge, when the blade rotated in thunderstorm weather, the lightning that lightning-receiving area can be large tracts of land was absorbed, conducted wheel hub through wire and lower lead wire on to the ground of discharging.

Description

Aerogenerator blade with lightning-arrest function

Technical Field

The utility model relates to a wind power generation equipment technical field specifically is a aerogenerator blade with lightning-arrest function.

Background

With the development of science and technology, the demand of human society for energy is increasing day by day, the resources of the earth are excessively exploited, so that the damage to the ecological environment of the earth is caused, how green sustainable development becomes a common topic in all countries, and wind power generation is one of the current mature technologies for obtaining green clean energy, and large-scale wind power generation can be carried out in the natural environment.

However, the lightning protection effect of traditional aerogenerator blade is not good enough, generally adopts the mode of the most advanced fixed arrester at the blade to protect the blade, and lightning protection strikes the area for a short time, leads to the blade to be probably damaged by the thunderbolt, and the blade does not melt the ice function moreover, and when cold weather in winter, the blade surface freezes easily, and along with ice sheet is progressively thicker, the unit probably is shut down, however along with the weight on ice sheet increases always, and harm to the unit is bigger and bigger, just need melt the processing to the icing on the blade this moment. Accordingly, one skilled in the art provides a wind turbine blade with lightning protection function to solve the above problems of the background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a aerogenerator blade with lightning-arrest function to solve the traditional aerogenerator blade's that provides in the above-mentioned background art lightning protection effect not enough good, and can not melt the problem of ice.

In order to achieve the above object, the utility model provides a following technical scheme:

a wind driven generator blade with a lightning protection function comprises a blade, wherein lightning receiving belts are arranged on the upper edge and the lower edge of the blade and the tip edge of the blade, a root connecting block is arranged at one end, away from the tip, of the blade, a down lead is arranged in the blade, a protective sleeve is arranged on the outer side of the down lead, two wires are arranged on the upper side and the lower side of the down lead, an insulating partition block is arranged at one end, close to the tip of the blade, of the protective sleeve, a limit stop block is arranged on the outer side, close to one end of the blade, of the root connecting block, a plurality of connecting rods are annularly arranged at one end, away from the blade, of the root connecting block, a sealing baffle is arranged on the inner side, close to one end of the blade, of the root connecting block, the blade comprises an inner blade supporting wall, the outside on layer that generates heat is provided with the heat-conducting layer, the outside of heat-conducting layer is provided with the blade shell.

As a further aspect of the present invention: the both ends of wire are connected respectively and are connect on connecing the sudden strain of a muscle area and downlead, the one end that the insulating spacer block was kept away from to the downlead runs through sealing baffle, and the one end fixed connection that the insulating spacer block was kept away from to the downlead is on aerogenerator's wheel hub.

As a further aspect of the present invention: the heating layer is internally provided with a resistance wire and a heat conducting wire, and quartz sand is uniformly paved in the heat conducting layer.

As a further aspect of the present invention: the insulating and heat-insulating layer is a member made of asbestos, and the protective sleeve is a member made of silicon rubber.

As a further aspect of the present invention: the limit stop is in a circular ring shape, the root connecting block is fixedly connected to the inner side of the limit stop, and one end of the connecting rod is embedded into and fixed inside the root connecting block.

As a further aspect of the present invention: the upper and lower edge of blade and the position that most advanced edge corresponds the lightning receiving area all seted up with lightning receiving area equidimension recess, and the outside spraying of blade has waterproof corrosion-resistant finish paint.

Compared with the prior art, the beneficial effects of the utility model are that:

1. all be provided with the lightning-receiving area at the upper and lower edge of blade and most advanced edge, when the blade rotated in thunderstorm weather, the lightning that the lightning-receiving area can be large tracts of land was absorbed, through the wire with lead wire down conduct wheel hub on to the earth of discharging can effectually protect the blade, the lag of setting can further insulate the wire, thereby protects other members in the blade.

2. Wind generating set icing stoppage in chilly winter, and the ice sheet is thick, when influencing unit safety, the layer that generates heat that sets up can be switched on and generate heat, the heat transmits to the blade shell through the heat-conducting layer on, heat for the blade shell, thereby can melt the icing on the blade shell, subtract heavy for the blade, the appropriate amount quartz sand of evenly laying in the heat-conducting layer can absorb the heat at the layer during operation that generates heat, slowly release the heat after the layer that generates heat stops working, thereby can prolong the heat preservation effect.

Drawings

FIG. 1 is a schematic structural view of a wind turbine blade with lightning protection function;

FIG. 2 is a partial cross-sectional view of a wind turbine blade with lightning protection;

fig. 3 is a schematic layered view of two sides of a blade in a wind turbine blade with lightning protection function.

In the figure: 1. a blade; 2. a root connecting block; 3. a limit stop block; 4. a connecting rod; 5. a lightning receptor band; 6. a down conductor; 7. a protective sleeve; 8. a wire; 9. an insulating spacer block; 10. sealing the baffle; 11. an inner support wall of the blade; 12. an insulating and heat-insulating layer; 13. a heat generating layer; 14. a heat conductive layer; 15. quartz sand; 16. a blade shell.

Detailed Description

Referring to fig. 1 to 3, in an embodiment of the present invention, a wind turbine blade with lightning protection function includes a blade 1, lightning receiving bands 5 are disposed on both an upper edge and a lower edge of the blade 1 and a tip edge, a root connecting block 2 is disposed on one end of the blade 1 away from the tip, a down lead 6 is disposed inside the blade 1, a protective cover 7 is disposed on an outer side of the down lead 6, two wires 8 are disposed on both an upper side and a lower side of the down lead 6, an insulating spacer 9 is disposed on one end of the protective cover 7 close to the tip of the blade 1, a limit stop 3 is disposed on an outer side of one end of the root connecting block 2 close to the blade 1, a plurality of connecting rods 4 are annularly disposed on one end of the root connecting block 2 away from the blade 1, a sealing baffle 10 is disposed on an inner side of one end of the root connecting block 2 close to the blade 1, the blade 1 includes, a heat generating layer 13 is arranged on the outer side of the insulating and heat insulating layer 12, a heat conducting layer 14 is arranged on the outer side of the heat generating layer 13, and a blade shell 16 is arranged on the outer side of the heat conducting layer 14.

In fig. 2: the both ends of wire 8 are connected respectively and are connect on taking 5 and downlead 6 to can take 5 and downlead 6 to feed through with taking 5 of taking and downlead, make things convenient for the conduction of thunder and lightning, the one end that insulating spacer 9 was kept away from to downlead 6 runs through sealed baffle 10, thereby can be connected to 1 outsides of blade with downlead 6, the one end fixed connection that insulating spacer 9 was kept away from to downlead 6 is on aerogenerator's wheel hub, thereby can be through the wind power generation.

In fig. 3: the inside on layer 13 that generates heat is provided with resistance wire and heat-conducting wire, thereby can switch on the resistance wire, heat for layer 13 that generates heat, the heat-conducting wire can transmit each part on layer 13 that generates heat with the temperature uniformly, proper amount quartz sand 15 has evenly been laid to the inside of heat-conducting layer 14, can absorb and transmit the heat at layer 13 during operation that generates heat, after layer 13 that generates heat stops working, quartz sand 15 slowly releases the heat, thereby can prolong the heat preservation effect, prevent that blade 1 from covering ice too early.

In fig. 3: insulating layer 12 is the component of asbestos material to can play insulating and thermal-insulated effect, and then support wall 11 in to the blade and protect, lag 7 is the component of silicon rubber material, thereby can further insulate wire 8, and then other components in the protection blade 1.

In fig. 1 and 2: the limit stop 3 is in a circular ring shape, the root connecting block 2 is fixedly connected to the inner side of the limit stop 3, and one end of the connecting rod 4 is embedded and fixed in the root connecting block 2, so that the root connecting block 2 and the hub can be conveniently connected.

In fig. 1: the upper and lower edge of blade 1 and the position that most advanced edge corresponds to take 5 of connecing to dodge all seted up with the big recess such as take 5 of connecing to can make 1 butt joint of blade dodge take 5 to protect, the outside spraying of blade 1 has waterproof corrosion-resistant finish paint, thereby prolongs 1's of blade life.

The utility model discloses a theory of operation is: when the aerogenerator blade needs to be used, firstly, the connecting rod 4 of the aerogenerator blade is fixedly connected with the hub, the blade 1 can absorb wind energy to rotate to generate electricity, when thunder strikes the blade 1 in thunderstorm days, the lightning is absorbed by the lightning receiving belt 5 on the blade 1 and is transmitted to the hub through the lead 8 and the down lead 6, and then the lightning is discharged into the ground through the wind power generation tower connected with the hub, when the blade 1 is seriously coated with ice, and when the coated ice needs to be melted, the heating layer 13 is electrified, and the heat generated by the heating layer 13 is transmitted to the blade shell 16 through the heat conducting layer 14, so that the coated ice on the blade 1 can be melted, and the safety of the aerogenerator is protected.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A wind driven generator blade with a lightning protection function comprises a blade (1) and is characterized in that lightning receiving belts (5) are arranged on the upper edge and the lower edge of the blade (1) and the edge of the tip end of the blade (1), a root connecting block (2) is arranged at one end, far away from the tip end, of the blade (1), a down lead (6) is arranged inside the blade (1), a protective sleeve (7) is arranged on the outer side of the down lead (6), two lead wires (8) are arranged on the upper side and the lower side of the down lead (6), an insulating spacer block (9) is arranged at one end, close to the tip end of the blade (1), of the protective sleeve (7), a limit stop block (3) is arranged on the outer side of one end, close to the blade (1), of the root connecting block (2), a plurality of connecting rods (4) are annularly arranged at one end, far away from the blade (1), of the inner side, close to one end of the blade (1), of, the blade (1) comprises a blade inner supporting wall (11), an insulating and heat-insulating layer (12) is arranged on the outer side of the blade inner supporting wall (11), a heat-generating layer (13) is arranged on the outer side of the insulating and heat-insulating layer (12), a heat-conducting layer (14) is arranged on the outer side of the heat-generating layer (13), and a blade shell (16) is arranged on the outer side of the heat-conducting layer (14).

2. The wind driven generator blade with the lightning protection function according to claim 1, wherein two ends of the conducting wire (8) are respectively connected to the lightning receiving belt (5) and the down conductor (6), one end of the down conductor (6) far away from the insulating spacer block (9) penetrates through the sealing baffle (10), and one end of the down conductor (6) far away from the insulating spacer block (9) is fixedly connected to a hub of the wind driven generator.

3. The wind driven generator blade with the lightning protection function according to claim 1, wherein resistance wires and heat conducting wires are arranged inside the heat generating layer (13), and quartz sand (15) is uniformly laid inside the heat conducting layer (14).

4. Wind turbine blade with lightning protection according to claim 1, characterised in that said insulating and heat-insulating layer (12) is made of asbestos and said protective sheath (7) is made of silicone rubber.

5. Wind turbine blade with lightning protection according to claim 1, characterised in that the limit stop (3) is circular, the root coupling block (2) is fixedly connected to the inside of the limit stop (3), and one end of the connecting rod (4) is embedded and fixed inside the root coupling block (2).

6. The wind driven generator blade with the lightning protection function according to claim 1, wherein the upper edge, the lower edge and the tip edge of the blade (1) are provided with grooves with the same size as the lightning receiving belt (5) at positions corresponding to the lightning receiving belt (5), and the outer side of the blade (1) is sprayed with waterproof and corrosion-resistant finish paint.