CN111963390A

CN111963390A - Lightning arrester for wind generating set

Info

Publication number: CN111963390A
Application number: CN202010822300.3A
Authority: CN
Inventors: 张晓卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-16
Filing date: 2020-08-16
Publication date: 2020-11-20

Abstract

The invention discloses a lightning arrester for a wind generating set, relates to the technical field of wind power generation, and solves the problems that the lightning receiving area of a lightning receiving ball of the existing lightning arrester for wind power generation is smaller and the lightning receiving effect is not good enough; the periphery of the outer side of the lower part of the lightning arrester main body is arranged in an array mode and is connected with a plurality of groups of lower swinging pieces and a plurality of groups of upper swinging pieces in a hinged mode; a group of driving pieces are fixedly connected inside the lightning arrester main body; a group of stop block transmission parts are actively connected to the upper part inside the lightning arrester main body; and a group of unfolding transmission parts are rotatably connected to the lower part inside the lightning arrester main body. The lightning receiving device realizes the conversion between the lightning receiving ball and the lightning receiving net, improves the lightning receiving range by unfolding the lightning receiving net when the lightning is large, and is folded into the lightning receiving ball state when not used, thereby preventing the strong wind from influencing the lightning protection device, prolonging the service life and improving the practicability of the lightning protection device.

Description

Lightning arrester for wind generating set

Technical Field

The invention relates to the technical field of wind power generation, in particular to a lightning arrester for a wind generating set.

Background

Wind power generation is a power generation mode for converting kinetic energy of wind into electric energy, is widely favored by people due to the characteristics of cleanness and no pollution, adopts a generator to generate electricity in wind power generation, and is generally large in size and high in height, so that a lightning arrester is needed to be arranged to prevent a generator set from being damaged by lightning when being easily attacked by the lightning in use.

For example, application No.: the invention discloses a lightning protection system for a wind power generation device, which comprises an electric field shielding box arranged on the outer side of a wind power generator unit, wherein the top of the electric field shielding box is provided with a lightning rod, and the top height of the lightning rod is greater than the height of a blade of the wind power generator unit; the lightning receiving needle is also provided with a lightning receiving ball; the bottom of the lightning receiving needle is connected with a grounding wire, the grounding wire is arranged in the electric field shielding box, the electric field shielding box adopts a composite structure, effective lightning triggering is realized through the lightning receiving needle and the lightning receiving ball, and meanwhile, the electric field shielding box is arranged at a position close to the wind driven generator unit, so that the phenomenon that circuit elements in the wind driven generator unit are burnt even if the large current of the grounding wire leaks can not be caused.

Based on the above, the existing wind power generation lightning arrester generally adopts a structure of a lightning receiving ball to guide lightning because the existing wind power generation lightning arrester is easily influenced by strong wind when being positioned at a high position, but the lightning receiving area of the lightning receiving ball is small, and the lightning receiving effect is not good enough; therefore, the existing requirements are not met, and a lightning arrester for a wind generating set is provided for the requirements.

Disclosure of Invention

The invention aims to provide a lightning arrester for a wind generating set, which aims to solve the problems that the existing lightning arrester for wind power generation in the background art is easy to be influenced by strong wind at a high position in use, generally adopts a structure of a lightning receiving ball to guide thunder, but the lightning receiving area of the lightning receiving ball is small, and the lightning receiving effect is not good enough.

In order to achieve the purpose, the invention provides the following technical scheme: a lightning arrester for a wind generating set comprises a lightning arrester main body; the periphery of the outer side of the lower part of the lightning arrester main body is arranged in an array mode and is connected with a plurality of groups of lower swinging pieces and a plurality of groups of upper swinging pieces in a hinged mode; the group of lower swinging pieces and the group of upper swinging pieces at the same angle position are jointly hinged with a group of upright rods; the top of each group of upright rods is hinged with a group of outer swinging rods; the middle part of the lightning arrester main body is connected with a group of sliding blocks in a sliding manner; the outer side of the sliding block is circumferentially arranged and hinged with a plurality of groups of inclined pulling pieces; the other end of the inclined pulling piece is hinged with the middle part of the upper swinging piece; the top of the lightning arrester main body is slidably connected with a group of ferrule stop blocks, and the ferrule stop blocks are elastically connected with the lightning arrester main body; a group of driving pieces are fixedly connected inside the lightning arrester main body; a group of stop block transmission parts are actively connected to the upper part inside the lightning arrester main body; and a group of unfolding transmission parts are rotatably connected to the lower part inside the lightning arrester main body.

Preferably, the stop block transmission member further comprises a stop block driven gear and a ratchet mechanism, and the front end face of the stop block transmission member is coaxially connected with a group of stop block driven gears through a group of ratchet mechanisms.

Preferably, the driving member further comprises a stopper driving rack, a group of stopper driving racks is fixedly connected to the top of the piston rod of the driving member, and the stopper driven gear and the stopper driving racks are meshed to form the gear-rack transmission mechanism together.

Preferably, the dog driving medium is further provided with a dog driving gear, the rear portion of the dog driving medium is coaxially and fixedly connected with a group of dog driving gears, the cutting sleeve dog is further provided with a clamping conical surface and a dog driven rack, the lower portion of the cutting sleeve dog is provided with a group of dogs which are meshed with the dog driving gear to jointly form a gear-rack transmission mechanism, and the outer side of the bottom of the cutting sleeve dog is provided with a group of clamping conical surfaces.

Preferably, the driving piece further comprises an unfolding driving rack, the bottom of the driving piece is fixedly connected with a group of unfolding driving racks, the unfolding driving piece further comprises an unfolding driven gear, the rear part of the unfolding driving piece is coaxially and fixedly connected with a group of unfolding driven gears, and the unfolding driving racks and the unfolding driven gears are meshed to form a gear rack transmission mechanism together.

Preferably, the unfolding transmission part further comprises an unfolding driving gear, a group of unfolding driving gears are coaxially and fixedly connected to the left side of the unfolding transmission part, the sliding block further comprises an unfolding driven rack, a group of unfolding driven racks are fixedly connected to the top of the sliding block, and the unfolding driving gear and the unfolding driven racks are meshed to form a rack transmission mechanism together.

Preferably, a crank-slider mechanism is formed among the sliding block, the upper swinging piece, the inclined pulling piece and the lightning arrester main body.

Preferably, the lightning arrester main body and the vertical rod are both arranged vertically, the lower swinging piece and the upper swinging piece are arranged in parallel, and a double-rocker transmission mechanism is formed among the lightning arrester main body, the lower swinging piece, the upper swinging piece and the vertical rod.

Preferably, the lower swinging part further comprises a driving sprocket, the outer side of the lower swinging part is fixedly connected with a group of driving sprockets, the outer swinging rod further comprises a driven sprocket, the bottom of the outer swinging rod is fixedly connected with a group of driven sprockets, the driving sprocket and the driven sprocket are connected through chain transmission to jointly form a transmission chain transmission mechanism, and the transmission ratio of the transmission chain transmission mechanism is two.

Compared with the prior art, the invention has the beneficial effects that:

according to the lightning arrester, the vertical rod and the outer swinging rod are unfolded and folded by adopting the transmission modes such as the gear rack transmission mechanism, the slider-crank mechanism, the double-rocker mechanism and the chain transmission mechanism, so that the conversion between the lightning arresting ball and the lightning arresting network is realized, when lightning is large, the lightning arresting range is improved by unfolding the lightning arresting network, and when the lightning arrester is not used, the lightning arresting ball is folded into a lightning arresting ball state, so that the influence of strong wind on the lightning arrester is prevented, the service life is prolonged, the practicability of the lightning arrester is improved, different lightning arresting conditions can be better adapted, the practicability is improved, a better lightning arresting effect is achieved, meanwhile, the adjustment and the switching are simple, and the operation is convenient.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic side view of the outer swing link mounting shaft of the present invention;

FIG. 3 is a schematic side view of the drive shaft of the present invention;

FIG. 4 is a schematic side view of the outer swing link shaft of the present invention;

FIG. 5 is a schematic view of a partial enlarged structure at position A in the spit of the present invention;

FIG. 6 is a schematic side view of the slide block driving shaft of the present invention;

FIG. 7 is a schematic side view of the driving shaft of the ferrule stop block of the present invention;

FIG. 8 is a schematic axial side view of a ferrule stop block of the present invention;

in the figure: 1. a lightning arrester main body; 101. a sliding guide groove; 2. a lower swing member; 201. a drive sprocket; 3. an upper swing member; 4. a diagonal pull member; 5. erecting a rod; 6. an outer swing lever; 601. a driven sprocket; 7. a ferrule stop block; 701. clamping into the conical surface; 702. the stop block is driven by the rack; 8. a slider; 801. unfolding the driven rack; 9. a drive member; 901. unfolding the driving rack; 902. the baffle block drives the rack; 10. unfolding the transmission part; 1001. unfolding the driving gear; 1002. unfolding the driven gear; 11. a stopper transmission member; 1101. a stopper driven gear; 1102. a stop block driving gear; 1103. a ratchet mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 8, an embodiment of the present invention includes: a lightning arrester for a wind generating set comprises a lightning arrester main body 1; the periphery of the outer side of the lower part of the lightning arrester main body 1 is arranged and hinged with a plurality of groups of lower swinging pieces 2 and a plurality of groups of upper swinging pieces 3; a group of vertical rods 5 are hinged together by a group of lower swinging pieces 2 and a group of upper swinging pieces 3 at the same angle position; the top of each group of upright rods 5 is hinged with a group of outer swinging rods 6; the middle part of the lightning arrester main body 1 is connected with a group of sliding blocks 8 in a sliding manner; a plurality of groups of inclined pulling pieces 4 are hinged to the outer side of the sliding block 8 in a circumferential array arrangement manner; the other end of the inclined pulling piece 4 is hinged with the middle part of the upper swinging piece 3; the top of the lightning arrester main body 1 is slidably connected with a group of ferrule stop blocks 7, and the ferrule stop blocks 7 are elastically connected with the lightning arrester main body 1; a group of driving pieces 9 are fixedly connected inside the lightning arrester main body 1; a group of stop block transmission pieces 11 are actively connected to the upper part inside the lightning arrester main body 1; a set of deployment driving members 10 are rotatably connected to the lower portion of the inside of the lightning arrester main body 1.

Further, the stopper transmission member 11 further comprises a stopper driven gear 1101 and a ratchet mechanism 1103, the front end surface of the stopper transmission member 11 is coaxially connected with a set of stopper driven gear 1101 through a set of ratchet mechanism 1103, and in use, one-way transmission between the stopper driven gear 1101 and the stopper transmission member 11 is realized through the ratchet mechanism 1103.

Further, the driving member 9 further comprises a stopper driving rack 902, the top of the piston rod of the driving member 9 is fixedly connected with a group of stopper driving racks 902, the stopper driven gear 1101 and the stopper driving racks 902 are engaged to form a rack-and-pinion transmission mechanism, and when the stopper driving racks 902 slide downwards in use, the stopper driving racks 902 drive the stopper transmission member 11 to rotate through the rack transmission mechanism.

Further, dog driving medium 11 is still including dog driving gear 1102, the coaxial fixedly connected with a set of dog driving gear 1102 in rear portion of dog driving medium 11, cutting ferrule dog 7 is still including the card income conical surface 701, dog is from rack 702, the lower part of cutting ferrule dog 7 is provided with a set of dog from rack 702, the dog constitutes rack and pinion drive mechanism jointly from rack 702 and dog driving gear 1102 meshing, the bottom outside of cutting ferrule dog 7 is provided with a set of card income conical surface 701, in use, will make things convenient for outer swinging arms 6 to block into cutting ferrule dog 7 inside through card income conical surface 701, it is rotatory when dog driving medium 11, dog driving medium 11 drives cutting ferrule dog 7 through rack and pinion drive mechanism and up slides.

Further, the driving member 9 further comprises a deployment driving rack 901, the bottom of the driving member 9 is fixedly connected with a set of deployment driving racks 901, the deployment driving member 10 further comprises a deployment driven gear 1002, the rear of the deployment driving member 10 is coaxially and fixedly connected with a set of deployment driven gears 1002, the deployment driving rack 901 and the deployment driven gears 1002 are meshed to form a gear-rack transmission mechanism together, when the driving member 9 drives the deployment driving rack 901 to slide downwards in use, the deployment driving rack 901 drives the deployment driving member 10 to rotate through the gear-rack transmission mechanism.

Further, the unfolding transmission member 10 further comprises an unfolding driving gear 1001, the left side of the unfolding transmission member 10 is coaxially and fixedly connected with a group of unfolding driving gears 1001, the sliding block 8 further comprises an unfolding driven rack 801, the top of the sliding block 8 is fixedly connected with a group of unfolding driven racks 801, the unfolding driving gear 1001 and the unfolding driven racks 801 are meshed to form a rack transmission mechanism together, and when the unfolding transmission member 10 rotates in use, the unfolding transmission member 10 drives the sliding block 8 to slide downwards through the rack and pinion transmission mechanism.

Further, through constituting slider-crank mechanism between sliding block 8, last swinging member 3, oblique pull 4, the lightning arrester main part 1, in use when sliding block 8 down slides, sliding block 8 drives swinging member 3 down through slider-crank mechanism.

Further, lightning arrester main part 1 and pole setting 5 are vertical setting, and lower pendulum 2 and last swing member 3 are parallel mount, and lightning arrester main part 1, lower pendulum 2, go up swing member 3, constitute two rocker drive mechanism between the pole setting 5 jointly, and in use is down swung when last swing member 3, goes up swing member 3 and drives pole setting 5 through two rocker drive mechanism and keep vertical state and down swing, produces relative rotation between lower pendulum 2 and the pole setting 5 simultaneously.

Further, lower rocking member 2 is still including drive sprocket 201, the outside fixedly connected with a set of drive sprocket 201 of lower rocking member 2, outer swinging arms 6 is still including driven sprocket 601, the bottom fixedly connected with a set of driven sprocket 601 of outer swinging arms 6, drive sprocket 201 and driven sprocket 601 pass through chain drive and connect and constitute drive chain drive mechanism jointly, and drive chain drive mechanism's drive ratio is two, in use produce relative rotation between lower rocking member 2 and the pole setting 5, lower rocking member 2 drives outer swinging arms 6 through drive chain drive mechanism and swings, realize the expansion of outer swinging arms 6, think into and connect the net structure of dodging.

The working principle is as follows: when the lightning receiving ball is used, the lower swinging piece 2, the upper swinging piece 3, the diagonal pulling piece 4, the upright rod 5 and the outer swinging rod 6 form a lightning receiving ball structure together to receive lightning; when the lightning receiving net structure needs to be used, the driving piece 9 acts, firstly, the stop block driving rack 902 slides downwards, the stop block driving rack 902 drives the stop block driving piece 11 to rotate through the rack transmission mechanism, and the stop block driving piece 11 drives the clamping sleeve stop block 7 to slide upwards through the gear-rack transmission mechanism so as to expose the top of the outer swing rod 6; the driving piece 9 continues to act, the unfolding driving rack 901 slides downwards, the unfolding driving rack 901 drives the unfolding driving piece 10 to rotate through a gear rack transmission mechanism, the unfolding driving piece 10 drives the sliding block 8 to slide downwards through the gear rack transmission mechanism, the sliding block 8 drives the upper swinging piece 3 to swing downwards through a crank sliding block mechanism, the upper swinging piece 3 drives the vertical rod 5 to keep a vertical state and swing downwards through a double-rocker transmission mechanism, meanwhile, the lower swinging piece 2 and the vertical rod 5 rotate relatively, the lower swinging piece 2 drives the outer swinging rod 6 to swing through a transmission chain transmission mechanism, the outer swinging rod 6 is unfolded, and a lightning receiving network structure is formed.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a lightning arrester for wind generating set which characterized in that: comprises a lightning arrester main body (1); the periphery of the outer side of the lower part of the lightning arrester main body (1) is arranged in an array manner and is connected with a plurality of groups of lower swinging pieces (2) and a plurality of groups of upper swinging pieces (3) in a hinged manner; a group of lower swinging pieces (2) and a group of upper swinging pieces (3) at the same angle position are jointly hinged with a group of upright rods (5); the top of each group of upright rods (5) is hinged with a group of outer swinging rods (6); the middle part of the lightning arrester main body (1) is connected with a group of sliding blocks (8) in a sliding manner; a plurality of groups of inclined pulling pieces (4) are hinged to the outer side of the sliding block (8) in a circumferential array arrangement manner; the other end of the inclined pulling piece (4) is hinged with the middle part of the upper swinging piece (3); the top of the lightning arrester main body (1) is connected with a group of ferrule stop blocks (7) in a sliding manner, and the ferrule stop blocks (7) are elastically connected with the lightning arrester main body (1); a group of driving pieces (9) are fixedly connected inside the lightning arrester main body (1); a group of stop block transmission pieces (11) are actively connected to the upper part inside the lightning arrester main body (1); the lower part in the lightning arrester main body (1) is rotatably connected with a group of unfolding transmission parts (10).

2. A lightning protection device for a wind energy plant according to claim 1, characterized in that: the stopper transmission piece (11) further comprises a stopper driven gear (1101) and a ratchet mechanism (1103), and the front end face of the stopper transmission piece (11) is coaxially connected with a group of stopper driven gears (1101) through a group of ratchet mechanisms (1103).

3. A lightning protection device for a wind energy plant according to claim 1, characterized in that: the driving piece (9) further comprises a stop block driving rack (902), the top of a piston rod of the driving piece (9) is fixedly connected with a group of stop block driving racks (902), and a stop block driven gear (1101) is meshed with the stop block driving racks (902) to jointly form a gear-rack transmission mechanism.

4. A lightning protection device for a wind energy plant according to claim 1, characterized in that: the clamping sleeve is characterized in that the stop block transmission piece (11) further comprises a stop block driving gear (1102), a group of stop block driving gears (1102) is coaxially and fixedly connected to the rear portion of the stop block transmission piece (11), the clamping sleeve stop block (7) further comprises a clamping conical surface (701) and a stop block driven rack (702), a group of stop block driven rack (702) is arranged on the lower portion of the clamping sleeve stop block (7), the stop block is meshed with the stop block driving gear (1102) from the rack (702) to jointly form a gear-rack transmission mechanism, and a group of clamping conical surface (701) is arranged on the outer side.

5. A lightning protection device for a wind energy plant according to claim 1, characterized in that: the driving piece (9) further comprises an unfolding driving rack (901), the bottom of the driving piece (9) is fixedly connected with a group of unfolding driving racks (901), the unfolding driving piece (10) further comprises an unfolding driven gear (1002), the rear part of the unfolding driving piece (10) is coaxially and fixedly connected with a group of unfolding driven gears (1002), and the unfolding driving racks (901) and the unfolding driven gears (1002) are meshed to form a gear-rack transmission mechanism together.

6. A lightning protection device for a wind energy plant according to claim 1, characterized in that: the unfolding transmission piece (10) further comprises an unfolding driving gear (1001), the left side of the unfolding transmission piece (10) is fixedly connected with a group of unfolding driving gears (1001), the sliding block (8) further comprises an unfolding driven rack (801), the top of the sliding block (8) is fixedly connected with a group of unfolding driven racks (801), and the unfolding driving gear (1001) and the unfolding driven racks (801) are meshed to form a rack transmission mechanism together.

7. A lightning protection device for a wind energy plant according to claim 1, characterized in that: the slider (8), the upper swinging piece (3), the inclined pulling piece (4) and the lightning arrester main body (1) form a crank slider mechanism.

8. A lightning protection device for a wind energy plant according to claim 1, characterized in that: lightning arrester main part (1) and pole setting (5) are vertical setting, and lower pendulum (2) and last pendulum (3) are parallel mount, constitute two rocking rod drive mechanism jointly between lightning arrester main part (1), lower pendulum (2), last pendulum (3), the pole setting (5).

9. A lightning protection device for a wind energy plant according to claim 1, characterized in that: the lower swinging piece (2) further comprises a driving chain wheel (201), the outer side of the lower swinging piece (2) is fixedly connected with a group of driving chain wheels (201), the outer swinging rod (6) further comprises a driven chain wheel (601), the bottom of the outer swinging rod (6) is fixedly connected with a group of driven chain wheels (601), the driving chain wheel (201) and the driven chain wheels (601) are connected through chain transmission to form a transmission chain transmission mechanism together, and the transmission ratio of the transmission chain transmission mechanism is two.