CN211230705U

CN211230705U - Neutral ring fixing device of wind driven generator

Info

Publication number: CN211230705U
Application number: CN201922452778.7U
Authority: CN
Inventors: 张帅飞
Original assignee: Inner Mongolia Juchuang Electrical Equipment Co ltd
Current assignee: Inner Mongolia Juchuang Electrical Equipment Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-08-11
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a aerogenerator neutral ring fixing device, including annular disc, annular disc's internal diameter and the shaft diameter phase-match of generator shaft, be equipped with the annular groove with the coaxial setting of annular disc in annular disc's quotation, evenly be fixed with three otic placode on annular disc's periphery face, all set up the plug wire groove along annular disc's radial setting on every otic placode, the spread groove has been seted up in the quotation of annular disc between plug wire groove and annular groove, the radial setting of annular disc is followed to the spread groove, the one end and the plug wire groove intercommunication of spread groove, the other end and the annular groove intercommunication of spread groove, can dismantle on the otic placode of plug wire groove top and be connected with the clamp plate. The advantages are that: in the running process of the generator, the generator shaft and the copper ring are isolated through the annular disc, an insulating layer on the copper ring is protected, the problems that the insulating layer on the copper ring is damaged and discharges to the generator shaft are solved, and huge economic loss caused by electric leakage is avoided.

Description

Neutral ring fixing device of wind driven generator

The technical field is as follows:

the utility model relates to a power equipment management and maintenance technical field, concretely relates to aerogenerator neutral ring fixing device.

Background art:

the wind generator has a winding with a point equal to the absolute value of the voltage between each external terminal, the point is a neutral point, usually called zero point, and the conductor from the neutral point is called neutral line.

The neutral point of the wind driven generator is embodied by a copper ring sleeved on a shaft of the wind driven generator, three connecting joints are uniformly arranged in the circumferential direction of the copper ring, and three phase lines are respectively connected with the three connecting joints to form a three-phase four-wire system power supply mode; the three connecting joints are wound and connected with the corresponding three-phase lines through insulating tapes, and insulating layers for isolating the copper rings from the shaft of the wind driven generator are wound on the copper rings through the insulating tapes; however, in the running process of the wind driven generator, particularly at the moment of starting, the shaft of the wind driven generator and the insulating layer on the copper ring can generate relative sliding friction, after the wind driven generator runs for a long time, the insulating layer is easy to wear, and heat can be generated in the friction process, so that the damage process to the insulating layer is accelerated, the service life of the insulating layer is reduced, the damage to the insulating layer can cause discharge to the shaft of the wind driven generator, the main cabinet of the wind driven generator can be damaged due to overlarge current, and huge economic loss is caused; and the insulating layer of the copper ring can be overhauled only after the wind driven generator is shut down, so that the normal production is seriously affected, and the working efficiency is reduced.

The utility model has the following contents:

an object of the utility model is to provide a aerogenerator neutral ring fixing device.

The utility model discloses by following technical scheme implement: neutral ring fixing device of aerogenerator, including annular disc, annular disc's internal diameter and generator shaft's diameter of axle phase-match be equipped with in annular disc's the quotation with the annular groove of the coaxial setting of annular disc evenly be fixed with three otic placode on annular disc's the outer periphery face, at every all seted up the edge on the otic placode the plug wire groove of annular disc's radial setting the plug wire groove with between the annular groove the spread groove has been seted up in annular disc's the quotation, the spread groove is followed annular disc's radial setting, the one end of spread groove with the plug wire groove intercommunication, the other end of spread groove with the annular groove intercommunication plug wire groove top can dismantle on the otic placode and be connected with the clamp plate.

Furthermore, the pressing plate is detachably connected with the lug plates on two sides of the inserting groove through bolts.

Furthermore, insulating resin glue is filled between the annular groove and the copper ring.

The utility model has the advantages that: the annular disc is sleeved on the wind driven generator shaft, the wind driven generator shaft and the copper ring are isolated through the annular disc in the running process of the wind driven generator, the insulating layer on the copper ring is protected, the service life of the insulating layer is prolonged, the problems that the insulating layer on the copper ring is damaged and the wind driven generator shaft discharges electricity are solved, the fault rate of the wind driven generator is reduced, huge economic loss caused by electric leakage is avoided, and the working efficiency is improved.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of this embodiment.

In the figure: annular disc 1, annular groove 2, copper ring 3, attach fitting 4, otic placode 5, plug wire groove 6, clamp plate 7, bolt 8, spread groove 9.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the fixing device for the neutral ring of the wind driven generator comprises an annular disc 1, wherein the inner diameter of the annular disc 1 is matched with the shaft diameter of a generator shaft, the annular disc 1 is sleeved at the corresponding position of the generator shaft, and the generator shaft is isolated from a copper ring 3 through the annular disc 1 in the running process of the generator, so that an insulating layer on the copper ring 3 is protected, and the problem of discharging to the generator shaft after the insulating layer on the copper ring 3 is damaged is solved; the disc surface of the annular disc 1 is provided with an annular groove 2 which is coaxial with the annular disc 1, three lug plates 5 are uniformly fixed on the outer peripheral surface of the annular disc 1, each lug plate 5 is provided with an inserting groove 6 which is arranged along the radial direction of the annular disc 1, the disc surface of the annular disc 1 between the inserting groove 6 and the annular groove 2 is provided with a connecting groove 9, the connecting groove 9 is arranged along the radial direction of the annular disc 1, one end of the connecting groove 9 is communicated with the inserting groove 6, the other end of the connecting groove 9 is communicated with the annular groove 2, the copper ring 3 is fixed in the annular groove 2, insulating resin adhesive is filled between the annular groove 2 and the copper ring 3, and the copper ring 3 is fixed in the annular groove 2 through the insulating resin adhesive; three attach fitting 4 of copper ring 3 is arranged in corresponding spread groove 9 respectively, can dismantle on the otic placode 5 of plug wire groove 6 top and be connected with clamp plate 7, can dismantle through bolt 8 between the otic placode 5 of clamp plate 7 and plug wire groove 6 both sides and be connected, the three-phase line passes in plug wire groove 6 respectively to through the sticky tape and the copper ring 3 on the corresponding attach fitting 4 winding be connected, clamp plate 7 passes through bolt 8 and otic placode 5 fixed connection, fixes the three-phase line in plug wire groove 6.

The specific operation process of the embodiment is as follows:

embedding the copper ring 3 wound with the insulating layer into the annular groove 2 of the annular disc 1, and simultaneously placing the connecting joint 4 on the copper ring 3 into the corresponding connecting groove 9; the three-phase wires respectively penetrate through the corresponding inserting grooves 6 to be in contact connection with the corresponding connecting joints 4 on the copper ring 3, the lug plates 5 are connected with the pressing plates 7 through bolts 8, and the pressing plates 7 fix the corresponding three-phase wires in the inserting grooves 6; insulating resin glue is poured into the annular groove 2, the copper ring 3 is fixedly bonded with the annular disc 1, and the annular disc 1 is sleeved at the corresponding position of the generator shaft.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Neutral ring fixing device of aerogenerator, its characterized in that, including annular disc, the internal diameter of annular disc and the shaft diameter phase-match of generator shaft be equipped with in annular disc's the quotation with the annular groove of the coaxial setting of annular disc evenly be fixed with three otic placode on annular disc's the periphery face, every all seted up on the otic placode along the plug wire groove of the radial setting of annular disc the plug wire groove with between the annular groove the spread groove has been seted up in annular disc's the quotation, the spread groove is followed the radial setting of annular disc, the one end of spread groove with the plug wire groove intercommunication, the other end of spread groove with the annular groove intercommunication plug wire groove top can dismantle on the otic placode and be connected with the clamp plate.

2. The wind driven generator neutral ring fixing device as claimed in claim 1, wherein the pressing plate is detachably connected with the lug plates on both sides of the plug slot through bolts.

3. The wind turbine neutral ring fixing device according to claim 1, wherein an insulating resin glue is filled between the annular groove and the copper ring.