CN113757054A

CN113757054A - Down-lead sliding connection device of wind generating set

Info

Publication number: CN113757054A
Application number: CN202111257959.XA
Authority: CN
Inventors: 阮庆洲
Original assignee: Shanghai Electric Wind Power Group Co Ltd
Current assignee: Shanghai Electric Wind Power Group Co Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2021-12-07
Anticipated expiration: 2041-10-27
Also published as: CN113757054B

Abstract

The application provides a wind generating set's downlead sliding connection device, including installation base, carbon brush subassembly and the input terminal who is used for connecting the downlead terminal. The mounting base is used for being connected with the wind generating set. The carbon brush assembly is fixed on the mounting base and is used for being in sliding connection with the conductive ring body of the wind generating set. The input terminal is assembled on the mounting base and comprises a plurality of groups of matching structures. The multiple groups of matching structures are used for selecting and matching the down lead terminals of different models. By the arrangement, the down lead terminals of various types can be selectively matched and connected with one of the multiple groups of matching and connecting structures, and the compatibility of the down lead sliding connection device is improved. And moreover, the input terminal tends to be standardized by arranging a plurality of groups of matching structures, so that different transition resistances are avoided, the reliability of the input terminal is improved, and the risk of damage of the wind generating set caused by lightning stroke is reduced.

Description

Down-lead sliding connection device of wind generating set

Technical Field

The application relates to the technical field of wind power, in particular to a down lead sliding connection device of a wind generating set.

Background

With the increase of the capacity of the wind generating set, the heights of the hub and the fan blade of the wind generating set are increased, so that the probability of the wind generating set suffering from lightning stroke is increased.

In the aspect of lightning protection of a pitch system, the current wind generating set mainly adopts the technical scheme of twisted cable connection, connection of a cable leading to a bearing carbon brush through a wall bushing, guiding lightning current on a pitch bearing by using the carbon brush, and the like. When different technical schemes are adopted, different requirements of downlead terminals can appear on the downlead in the lightning protection device, so that different matching structures need to be designed according to the requirements of the different downlead terminals on the downlead sliding connection device, and the downlead sliding connection device in the related technology has poor compatibility and cannot be compatible with multi-model downlead terminals.

Disclosure of Invention

The application provides a wind generating set's downlead sliding connection device who aims at can compatible polytypic downlead terminal.

The application provides a wind generating set's downlead sliding connection device, wherein, include:

the mounting base is used for being connected with the wind generating set;

the carbon brush assembly is fixed on the mounting base and is used for being in sliding connection with a conductive ring body of the wind generating set; and

the input terminal for connecting the down-lead terminal is assembled on the mounting base and comprises a plurality of groups of matching structures, and the plurality of groups of matching structures are used for selecting and matching the down-lead terminals of different models.

Optionally, the multiple sets of mating structures include a first mating structure and a second mating structure, wherein the first mating structure is formed as a part of the second mating structure.

Optionally, the multiple groups of mating structures further include a third mating structure, where the third mating structure includes multiple sub-mating structures, and the multiple sub-mating structures surround the peripheries of the first mating structure and the second mating structure.

Optionally, the plurality of sub-mating structures are arranged in a rectangular shape.

Optionally, the first mating structure comprises a first sub-mating structure provided singly; and/or the second mating structure comprises a plurality of second sub-mating structures arranged in a straight line.

Optionally, the mounting base includes a base plate and a discharge tip, wherein the discharge tip is formed at one end of the base plate and forms an integrated structure with the base plate.

Optionally, the mounting base includes a first mounting plate and a second mounting plate vertically connected to the bottom plate, and the first mounting plate and the second mounting plate are symmetrically arranged on two sides of the bottom plate; the discharge tip portion is located between the first mounting plate and the second mounting plate; the carbon brush assembly comprises a first carbon brush piece and a second carbon brush piece, the first carbon brush piece is installed on one side, back to the second mounting plate, of the first mounting plate, and the second carbon brush piece is installed on one side, back to the first mounting plate, of the second mounting plate.

Optionally, one end of the first mounting plate protrudes from the end of the bottom plate along the direction of the discharge tip; one end of the second mounting plate protrudes out of the tail end of the bottom plate along the direction of the discharge tip; a first discharge gap is reserved between the first mounting plate and the discharge tip end; and a second discharge gap is reserved between the second mounting plate and the discharge tip.

Optionally, the end of the discharge tip is formed with at least one sharp corner, and the degree value of the sharp corner is less than 60 °; and/or

The input terminal and the discharge tip portion are distributed along the symmetrical center lines of the first mounting plate and the second mounting plate.

Optionally, the down conductor sliding connection device includes a guide component, which is disposed on the bottom plate, a through hole is disposed in the middle of the guide component, and is used for the down conductor to pass through and connect with the input terminal, and the guide component and the input terminal are distributed along the symmetric center lines of the first mounting plate and the second mounting plate; and/or

The downlead sliding connection device comprises an installation supporting seat, the installation supporting seat is connected with the bottom plate back to one side surface where the input terminal is located, the extending direction of the symmetrical center line of the first installation plate and the second installation plate is followed, and the installation supporting seat is connected with the middle area of the bottom plate.

The application provides a downlead sliding connection device, including installation base, carbon brush subassembly and the input terminal who is used for connecting the downlead terminal. The input terminal is assembled on the mounting base and comprises a plurality of groups of matching structures which are used for selecting and matching with the down lead terminals of different models. By the arrangement, the down lead terminals of various types can be selectively matched and connected with one of the multiple groups of matching and connecting structures, and the compatibility of the down lead sliding connection device is improved. And moreover, the input terminal tends to be standardized by arranging a plurality of groups of matching structures, so that different transition resistances are avoided, the reliability of the input terminal is improved, and the risk of damage of the wind generating set caused by lightning stroke is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic structural view of a down conductor sliding connection device of a wind generating set of the present application;

FIG. 2 is a top view of the input terminal of the down conductor slip connector shown in FIG. 1;

fig. 3 is a bottom view of the input terminal of the down conductor slide connection device 1 shown in fig. 1;

FIG. 4 is a schematic view of a first embodiment of the connection of the input terminal and the down conductor terminal of the down conductor sliding connection device shown in FIG. 1;

FIG. 5 is a schematic view of a second embodiment of the connection of the input terminal and the down conductor terminal of the down conductor sliding connection device shown in FIG. 1;

FIG. 6 is a schematic view of a third embodiment of the connection of the input terminal and the down conductor terminal of the down conductor sliding connection device shown in FIG. 1;

FIG. 7 is a top view of the mounting base of the drop wire slip joint assembly shown in FIG. 1;

FIG. 8 is a left side view of the mounting base of the drop wire slip joint assembly shown in FIG. 1;

FIG. 9 is a right side view of the mounting base of the drop wire slip connector shown in FIG. 1;

FIG. 10 is a schematic view of a carbon brush assembly of the down conductor slip connector of FIG. 1;

FIG. 11 is a top view of the mounting bracket of the down conductor slip joint assembly shown in FIG. 1;

fig. 12 is a bottom view of the installation support base of the down conductor slide coupling device shown in fig. 1.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The application provides a wind generating set's downlead sliding connection device, including installation base, carbon brush subassembly and the input terminal who is used for connecting the downlead terminal. The mounting base is used for being connected with the wind generating set. The carbon brush assembly is fixed on the mounting base and is used for being in sliding connection with the conductive ring body of the wind generating set. The input terminal is assembled on the mounting base and comprises a plurality of groups of matching structures which are used for selecting and matching with the down lead terminals of different models.

Fig. 1 is a schematic structural diagram of a down conductor sliding connection device 1 of a wind turbine generator system provided by the present application. As shown in fig. 1, the down conductor sliding connection device 1 includes a mounting base 2, a carbon brush assembly 3, and an input terminal 4 for connecting a down conductor terminal. The mounting base 2 is used for being connected with a wind generating set. The input terminal 4 is assembled on the mounting base 2, and includes a plurality of sets of mating structures 5, and the plurality of sets of mating structures 5 are used for selecting different types of down lead terminals for mating. That is, the down conductor terminals with different specifications can be matched with one of the matching structures 5, so as to realize the connection between the down conductor terminals and the input terminals 4. With the arrangement, the down lead terminals of various types can be selectively matched and connected with one of the matching and connecting structures 5, so that the compatibility of the down lead sliding connection device is improved. Moreover, the input terminal 4 tends to be standardized by arranging a plurality of groups of matching structures 5, so that different transition resistances are avoided, the reliability of the input terminal 4 is improved, and the risk of damage of the wind generating set caused by lightning stroke is reduced. In some embodiments, the material of the input terminal 4 includes hot-dip galvanized steel or stainless steel. In some embodiments, input terminal 4 has a length value of 75mm, a width value of 70mm, and a thickness value of 40 mm.

In some embodiments, the down conductor sliding connection device 1 includes a guide member 21 disposed on the bottom plate 9, a through hole 22 is formed in a middle portion of the guide member 21 for passing the down conductor therethrough to be connected to the input terminal 4, and the guide member 21 and the input terminal 4 are distributed along a symmetrical center line of the first mounting plate 12 and the second mounting plate 13. The down-lead terminal is inserted into the through hole 22 and then connected to the input terminal 4. The through hole of the guide member 21 can circumferentially define the position of the down conductor, preventing the down conductor from being displaced by a large extent and causing damage. In the horizontal direction, the center line of the guide member 21 substantially coincides with the center line of the input terminal 4, so that the guide member 21 is substantially aligned with the input terminal 4, so that the down conductor terminal can be easily connected to the input terminal 4 after being inserted into the through hole 22.

Fig. 2 is a plan view of the input terminal 4 of the down conductor slide connection device 1 shown in fig. 1. Fig. 3 is a bottom view of the input terminal 4 of the down conductor slide connection device 1 shown in fig. 1. Fig. 4 is a schematic diagram of the first embodiment in which the input terminal 4 of the down conductor sliding connection device 1 shown in fig. 1 is connected to the down conductor terminal. Fig. 5 is a schematic diagram of the second embodiment in which the input terminal 4 of the down conductor sliding connection device 1 shown in fig. 1 is connected to the down conductor terminal. As shown in fig. 2 to 5, the multiple sets of mating structures 5 include a first mating structure 6 and a second mating structure 7, wherein the first mating structure 6 is formed as a part of the second mating structure 7. The first mating structure 6 is adapted to mate with one type of drop terminal (as shown in fig. 3). The second mating structure 7 is adapted to mate with a second type of drop terminal (as shown in fig. 4). The second mating structure 7 includes the first mating structure 6 to reduce the area of the second mating structure 7 occupying the upper surface of the input terminal 4, so that the upper surface of the input terminal 4 is simpler, and the material and cost are saved. In some embodiments, the first mating structure 6 includes a first connection hole 90 disposed on the upper surface of the input terminal 4, the first connection hole 90 being a threaded hole model M12. The depth range value of the threaded hole is 18 mm-20 mm. In addition, the depth of the screw hole is smaller than the height of the input terminal 4. If the down conductor terminal is the O-hole terminal 42, the O-hole terminal 42 is connected to the first connection hole 90 by a bolt. In some embodiments, the second mating structure 7 includes a first connection hole 90 and a second connection hole 91. If the down conductor terminal is the double O-hole terminal 43, the double O-hole terminal 43 is connected to the first connection hole 90 and the second connection hole 91 by bolts. The second connection hole 91 is also provided on the upper surface of the input terminal 4, and is the same type as the first connection hole 90. Therefore, the first matching structure 6 and the second matching structure 7 are simple in structure and good in effect of connecting the down-lead terminals. In some embodiments, the center-to-center distance between the first connection hole 90 and the second connection hole 91 is 40mm, so that the double O-shaped hole terminal 43 can be well fitted.

In some embodiments, the first mating structure 6 comprises a first stud. The O-shaped hole terminal 42 is fastened by a nut after being sleeved on the first stud. In some embodiments, the second mating structure 7 comprises a first stud and a second stud. The double-O-shaped hole terminal 43 is sleeved on the first stud and the second stud and then fastened by a nut.

In some embodiments, the first mating structure 6 comprises a single disposed first sub-mating structure. The first sub-mating structure includes a first connection aperture 90 for mating with the O-hole terminal 42. In this embodiment, the first connection hole 90 is provided to connect with the O-shaped hole terminal 42, so that the structure is simple and the connection effect is good.

In some embodiments, the second mating structure 7 includes a plurality of second sub-mating structures arranged in a straight line. The plurality of second sub-mating structures includes a first connection hole 90 and a second connection hole 91. The first connecting holes 90 and the second connecting holes 91 are linearly arranged to be matched with the dual-O-shaped hole terminals 43, so that the second adapting structure 7 and the dual-O-shaped hole terminals 43 have good connecting effect.

As shown in fig. 3, in some embodiments, the lower surface of the input terminal 4 is provided with a plurality of tenth connection holes 41. The tenth connecting holes 41 are connected to the bottom plate by fourth fastening members (not shown). The fourth fastener (not shown) is an M8 bolt, nut, and washer combination, wherein the bolt has a length ranging from 16mm to 20 mm.

Fig. 6 is a schematic diagram of the third embodiment in which the input terminal 4 of the down conductor sliding connection device 1 shown in fig. 1 is connected to the down conductor terminal. As shown in fig. 6, the multiple-unit mating structure 5 further includes a third mating structure 8, and the third mating structure 8 includes a plurality of sub-mating structures surrounding the first mating structure 6 and the second mating structure 7. In this embodiment, the multiple mating sub-structures include multiple third connection holes 92 for matching with the four-hole type sheet terminal 44 on the market, so that the third mating sub-structure 8 and the four-hole type sheet terminal 44 are connected effectively, thereby realizing the connection between the input terminal 4 and the four-hole type sheet terminal 44.

In some embodiments, the plurality of sub-mating structures are arranged in a rectangular pattern. Since the four-hole type sheet terminal 44 includes four connecting holes arranged in a rectangular shape, the multiple adapter structures in this embodiment also include multiple third connecting holes 92 arranged in a rectangular shape to be adapted to the four-hole type sheet terminal 44, so that the third adapter structure 8 and the four-hole type sheet terminal 44 are connected effectively, and the input terminal 4 and the four-hole type sheet terminal 44 are connected more stably.

Fig. 7 is a plan view of the mounting base 2 of the down conductor slide connection device 1 shown in fig. 1. Fig. 8 is a left side view of the mounting base 2 of the down conductor slide coupling device 1 shown in fig. 1. Fig. 9 is a right side view of the mounting base 2 of the down conductor slide coupling device 1 shown in fig. 1. As shown in fig. 7 to 8 in combination, the mounting base 2 includes a base plate 9 and a discharge tip 10, wherein the discharge tip 10 is formed at one end of the base plate 9 to form an integral structure with the base plate 9. In the event of failure of the carbon brush assembly 3, the discharge tip 10 is used for lightning current discharge. In this embodiment, the discharge tip 10 is located at the end of the bottom plate 9 and is formed as an integral structure with the bottom plate 9. That is, the discharge tip 10 is not connected to the bottom plate 9 by any connector, so as to avoid corrosion of the contact surface between the discharge tip 10 and the bottom plate 9, which may result in an increase in resistance caused by the contact between the discharge tip 10 and the bottom plate 9, and improve the performance of the discharge tip 10. In some embodiments, the material of the mounting base 2 includes hot-dip galvanized steel or stainless steel. In some embodiments, the thickness of the mounting base 2 ranges from 2mm to 6 mm.

In some embodiments, the bottom plate 9 includes a plurality of sixth connection holes 33. The bottom plate 9 is coupled to the mounting support 23 through a plurality of sixth coupling holes 33. The aperture range value of the sixth connecting hole 33 is phi 6.5 mm-phi 9 mm. In this embodiment, the aperture is preferably 9 mm. In some embodiments, the distance between two adjacent sixth connection holes 33 ranges from 50mm to 70 mm. In this embodiment, the pitch is preferably 60 mm.

As shown in fig. 1, in some embodiments, the plurality of sixth connecting holes 33 are connected to the bottom plate 9 by first fasteners 38. The first fastener 38 is an M8 bolt, nut, and washer combination, wherein the bolt has a length ranging from 16mm to 20 mm.

In some embodiments, the bottom plate 9 includes a plurality of seventh connecting holes 34. The base plate 9 is connected to the guide member 21 through a plurality of seventh connection holes 34. The aperture range value of the seventh connecting hole 34 is phi 5.5 mm-phi 6.5 mm. In this embodiment, the aperture is preferably 6.5 mm. In some embodiments, the distance between two adjacent seventh connecting holes 34 ranges from 50mm to 70 mm. In this embodiment, the pitch is preferably 60 mm. In some embodiments, the number of the plurality of seventh connecting holes 34 is 1, 2, 3, etc.

As shown in fig. 1, in some embodiments, a plurality of seventh connecting holes 34 are connected to the bottom plate 9 by second fasteners 39. The second fastener 39 is an M6 bolt, nut, and washer combination, wherein the bolt has a length range of 70mm to 80 mm.

In some embodiments, the bottom plate 9 includes a plurality of fastening slots 35. The bottom plate 9 is connected to the input terminal 4 through a plurality of fastening grooves 35. The fastening groove 35 is a long groove having two arc-shaped ends, so that the range of the input terminal 4 mounted on the bottom plate 9 is enlarged, and the input terminal 4 can be coupled to the plurality of tenth coupling holes 41, thereby securing the input terminal 4 to the bottom plate 9. The length range value of the elongated groove is 40 mm-60 mm. In this embodiment, the length is preferably 50 mm. The width range value of the long groove is 6.5 mm-9 mm. In this embodiment, the width is preferably 8.6 mm. In some embodiments, the interval between adjacent two fastening slits 35 ranges from 40mm to 60 mm. In this embodiment, the pitch is preferably 50 mm. In some embodiments, the plurality of fastening slots 35 is 1, 2, 3, etc.

In some embodiments, the end of the discharge tip 10 is formed with at least one sharp corner 11, the angle 11 having a degree value of less than 60 °. In this embodiment, the end of the discharge tip portion 10 is formed in a pointed shape, so that the area of the pointed end 11 of the discharge tip portion 10 is small and less electric charges can be accommodated. However, when lightning current exists at the discharge tip 10, a large amount of charges are collected at the sharp corners 11, so that the discharge phenomenon is more likely to occur at the sharp corners 11, and the risk of damage of the wind turbine generator system caused by lightning strike is reduced. The degree value of the sharp corner 11 is less than 60 degrees, so that the charges can easily reach the sharp corner 11 to be gathered, and the point discharge effect is good. In some embodiments, the number of cusps 11 comprises 2, 3, 4, 5, etc.

In some embodiments, the input terminals 4 and the discharge tip portions 10 are distributed along the symmetrical center lines of the first mounting plate 12 and the second mounting plate 13. That is, in the horizontal direction, the center of the input terminal 4 is almost on the same straight line with the center of the discharge tip 10, so that the charges introduced into the down-lead terminal by the input terminal 4 are more rapidly gathered at the discharge tip 10, and the discharge phenomenon is more likely to occur at the sharp corner 11 of the discharge tip 10, thereby reducing the risk of damage of the wind turbine generator caused by lightning strike.

In some embodiments, the mounting base 2 includes a first mounting plate 12 and a second mounting plate 13 perpendicularly attached to the bottom plate 9, symmetrically disposed on both sides of the bottom plate 9. The discharge tip 10 is located between the first mounting plate 12 and the second mounting plate 13. The first mounting plate 12 and the second mounting plate 13 are connected to two sides of the bottom plate 9, and are integrated with the bottom plate 9 for assembling the carbon brush assembly 3. The discharge tip 10 is located at an intermediate position between the first mounting plate 12 and the second mounting plate 13. In some embodiments, the sharp angle 11 extends 2mm to 5mm beyond the outer edges of the first mounting plate 12 and the second mounting plate 13. In some embodiments, the height of the base of the triangle in which the sharp angle 11 is located is greater than 25 mm. So set up, make point discharge effectual. In some embodiments, the first mounting plate 12 includes a plurality of eighth attachment holes 36. The first mounting plate 12 is connected to the first carbon brush 14 through a plurality of eighth connection holes 36. The eighth connection hole 36 has an aperture value of phi 9 mm. In some embodiments, the number of the eighth connecting holes 36 is at least three, wherein the distance between the front eighth connecting hole 36 and the middle eighth connecting hole 36 ranges from 35mm to 45 mm. The distance between the middle eighth connecting hole 36 and the rear eighth connecting hole 36 is 50mm to 70mm, and in this embodiment, the distance is preferably 60 mm. So configured as to mate with the attachment holes in the first carbon brush 14 to effect attachment of the first mounting plate 12 to the first carbon brush 14. In some embodiments, the second mounting plate 13 includes a plurality of ninth connection holes 37. The second mounting plate 13 is connected to the second carbon brush 15 through a plurality of ninth connection holes 37. The structure and size of the plurality of ninth connection holes 37 are the same as those of the plurality of eighth connection holes 36, and thus detailed description thereof is omitted.

As shown in fig. 1, in some embodiments, a plurality of eighth connection holes 36 are connected to the first mounting plate 12, and a plurality of ninth connection holes 37 are connected to the second mounting plate 13 by third fasteners 40. The third fastener 40 is an M8 bolt, nut, and washer combination, wherein the bolt has a length range of 30mm to 40 mm.

In some embodiments, one end of the first mounting plate 12 protrudes from the end of the bottom plate 9 in the direction of the discharge tip 10. One end of the second mounting plate 13 protrudes from the end of the bottom plate 9 in the direction of the discharge tip 10. A first discharge gap 16 is left between the first mounting plate 12 and the discharge tip 10. A second discharge gap 17 is left between the second mounting plate 13 and the discharge tip 10. In this embodiment, a gap is left between the first mounting plate 12 and the discharge tip 10, and a gap is left between the second mounting plate 13 and the discharge tip 10. Thus, the first carbon brush 14 mounted on the first mounting plate 12 and the second carbon brush 15 mounted on the second mounting plate 13 do not contact the discharge tip 10, which is advantageous for the first carbon brush 14 and the second carbon brush 15 to introduce the electric charges transferred to the base plate 9 to the ground or for the discharge effect of the discharge tip 10.

Fig. 10 is a schematic structural view of the carbon brush assembly 3 of the down conductor sliding connecting apparatus 1 shown in fig. 1. Fig. 1 and 10 are combined to show the present invention. The carbon brush assembly 3 is fixed on the mounting base 2 and is used for being in sliding connection with a conductive ring body of the wind generating set and guiding electric charges transmitted to the bottom plate 9 into the ground, so that the risk of damage of the wind generating set caused by lightning stroke is reduced. The carbon brush assembly 3 comprises a first carbon brush 14 and a second carbon brush 15, wherein the first carbon brush 14 is mounted on one side of the first mounting plate 12, which is opposite to the second mounting plate 13, and the second carbon brush 15 is mounted on one side of the second mounting plate 13, which is opposite to the first mounting plate 12. The first mounting plate 12 is used to mount a first carbon brush 14. The second mounting plate 13 is used to mount a second carbon brush 15. The first carbon brush 14 and the second carbon brush 15 are disposed opposite to the discharge tip 10 so that the first carbon brush 14 and the second carbon brush 15 do not contact the discharge tip 10 when they rotate, thereby improving reliability of the first carbon brush 14 and the second carbon brush 15. In addition, in this embodiment, two carbon brushes 15 are used to increase the current passing capability, so that the effect of introducing charges to the ground is good.

In some embodiments, each of the first carbon brush 14 and the second carbon brush 15 includes a carbon brush box 18, and a carbon brush body 19 and a compression spring 20 installed in the carbon brush box 18, wherein the carbon brush body 19 is fixed in the carbon brush box 18 by the compression spring 20 for sliding connection with a conductive ring body of the wind turbine generator system. In some embodiments, the carbon brush box 18 includes a mounting recess 26, a first cavity 27, and a second cavity 28, wherein the first cavity 27 is located between the mounting recess 26 and the second cavity 28. The mounting recess 26 is in contact connection with the mounting base 2. The carbon brush body 19 is installed in the first cavity 27. The compression spring 20 is mounted within the second chamber 28. The front end spring coil 29 of the pressure spring 20 is pressed to the rear end of the carbon brush body 19. During the abrasion of the carbon brush body 19, the front end spring coil 29 of the pressure spring 20 automatically generates a constant thrust force forwards. In some embodiments, the size of the first cavity 27 matches the size of the carbon brush body 19.

In some embodiments, the first carbon brush 14 includes a tail terminal 30 connected to the carbon brush body 19. The tail end outlet terminal 30 includes a U-shaped groove 31. The first carbon brush 14 is connected to the first mounting plate 12 via a U-shaped groove 31. The U-shaped groove 31 forms an input port for lightning current. Similarly, the second carbon brush 15 also includes a tail terminal outlet and is connected to the second mounting plate 13 via a U-shaped slot in the tail terminal outlet. In some embodiments, the tail end outlet terminal 30 includes at least two copper wires 32 extending from the carbon brush body 19. The cross-sectional area of the copper wire 32 is greater than or equal to 16 square meters.

Fig. 11 is a plan view of the mounting seat 23 of the down conductor slide connecting device 1 shown in fig. 1. Fig. 12 is a bottom view of the mounting seat 23 of the down conductor slide coupling device 1 shown in fig. 1. As shown in fig. 11 and 12, in some embodiments, the down lead slide connector 1 includes a mounting support 23 connected to a side surface of the bottom plate 9 facing away from the input terminal 4, and the mounting support 23 is connected to a middle region of the bottom plate 9 along an extending direction of the center line of symmetry of the first mounting plate 12 and the second mounting plate 13. In this embodiment, the mounting support 23 is mounted at the bottom of the bottom plate 9, so that the connection between the mounting base 2 and the wind turbine generator set can be realized. The length direction of the mount support 23 extends in the width direction of the bottom plate 9. In some embodiments, the length of the mounting support 23 is the same as the width of the bottom plate 9, so that the contact area between the mounting support 23 and the bottom plate 9 in the width direction of the bottom plate 9 is maximized, and the mounting support 23 supports the mounting base 2 more stably. In some embodiments, the width of the mounting seat 23 ranges from 30mm to 50mm, preferably 35 mm. In some embodiments, the thickness of the mounting seat 23 ranges from 30mm to 50mm, preferably 35 mm.

In some embodiments, the upper surface of the installation support base 23 is provided with a plurality of fourth connection holes 24, and the installation support base 23 is connected with the plurality of sixth connection holes 33 through the plurality of fourth connection holes 24 by bolts or screws, so as to connect the installation support base 23 with the bottom plate 9. In some embodiments, the fourth connecting hole 24 is an M6 threaded hole or an M8 threaded hole, and has a depth ranging from 10mm to 15 mm. And, the interval between the adjacent two fourth connection holes 24 is 60 mm. In some embodiments, the number of the plurality of fourth connecting holes 24 is 1, 2, 3, etc., preferably 3. In some embodiments, the plurality of fourth connection holes 24 are centrally distributed. In some embodiments, the number of the plurality of fourth connection holes 24 is symmetrical to the number of the plurality of sixth connection holes 33.

In some embodiments, the lower surface of the installation support base 23 is provided with a plurality of fifth connection holes 25, and the installation support base 23 is connected with the bottom end of the bottom plate 9 through the plurality of fifth connection holes 25 by bolts or screws. So, the structure sets up simply, and the connection effect is good. In some embodiments, the fifth connecting hole 25 is an M6 threaded hole or an M8 threaded hole, and has a depth ranging from 10mm to 15 mm. And, the interval between the adjacent two fifth connection holes 25 is 60 mm. In some embodiments, the number of the plurality of fifth connection holes 25 is 1, 2, 3, etc., preferably 4. In some embodiments, the plurality of fifth connecting holes 25 are centrally distributed.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. The utility model provides a wind generating set's downlead sliding connection device which characterized in that includes:

the mounting base is used for being connected with the wind generating set;

2. The downlead sliding connection apparatus of claim 1, wherein the plurality of sets of mating structures includes a first mating structure, a second mating structure, wherein the first mating structure forms a portion of the second mating structure.

3. The downlead sliding connection apparatus according to claim 2, wherein the plurality of sets of mating structures further comprises a third mating structure comprising a plurality of sub-mating structures surrounding a periphery of the first mating structure and the second mating structure.

4. A down conductor slip connector as claimed in claim 3 wherein the plurality of sub-mating formations are arranged in a rectangular configuration.

5. The downlead sliding connection apparatus of claim 2, wherein the first mating structure comprises a single disposed first sub-mating structure; and/or the second mating structure comprises a plurality of second sub-mating structures arranged in a straight line.

6. The downlead sliding connection apparatus of claim 1, wherein the mounting base includes a base plate and a discharge tip portion, wherein the discharge tip portion is formed at one end of the base plate to form an integral structure with the base plate.

7. The drop wire sliding connection apparatus according to claim 6, wherein the mounting base includes a first mounting plate and a second mounting plate vertically connected to the bottom plate, symmetrically disposed on both sides of the bottom plate; the discharge tip portion is located between the first mounting plate and the second mounting plate; the carbon brush assembly comprises a first carbon brush piece and a second carbon brush piece, the first carbon brush piece is installed on one side, back to the second mounting plate, of the first mounting plate, and the second carbon brush piece is installed on one side, back to the first mounting plate, of the second mounting plate.

8. The downlead sliding connection apparatus according to claim 7, wherein one end of the first mounting plate protrudes from a distal end of the bottom plate in a direction of the discharge tip portion; one end of the second mounting plate protrudes out of the tail end of the bottom plate along the direction of the discharge tip; a first discharge gap is reserved between the first mounting plate and the discharge tip end; and a second discharge gap is reserved between the second mounting plate and the discharge tip.

9. The down conductor sliding connection apparatus according to claim 7, wherein the end of the discharge tip portion is formed with at least one sharp corner having a degree value of less than 60 °; and/or

10. The drop wire sliding connection apparatus according to claim 7, wherein the drop wire sliding connection apparatus includes a guiding member provided on the bottom plate, a through hole is provided in a middle portion of the guiding member for a drop wire to pass through and connect with the input terminal, and the guiding member and the input terminal are distributed along a symmetrical center line of the first mounting plate and the second mounting plate; and/or