CN205945337U - Umbrella hydrogenerator axle insulation system - Google Patents
Umbrella hydrogenerator axle insulation system Download PDFInfo
- Publication number
- CN205945337U CN205945337U CN201620602260.0U CN201620602260U CN205945337U CN 205945337 U CN205945337 U CN 205945337U CN 201620602260 U CN201620602260 U CN 201620602260U CN 205945337 U CN205945337 U CN 205945337U
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- Prior art keywords
- insulating barrier
- umbrella
- conductive layer
- slide rotor
- insulation system
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Abstract
The utility model discloses an umbrella hydrogenerator axle insulation system relates to hydraulic generator technical field. The utility model discloses an upper shaft and the son that trackslips, at the upper shaft with trackslip and be provided with first insulation layer, conducting layer and second insulating layer between the son, the second insulating layer is around wrapping on the conducting layer. The utility model provides a shaft current problem in the prior art unit, has simultaneously also improved the support rigidity of unit shafting, and then has strengthened unit operating stability, reduced the vibration and noise of unit.
Description
Technical field
This utility model is related to technical field of hydraulic generators, exhausted more specifically to a kind of umbrella-type generator axle
Edge structure.
Background technology
It is known that because the magnetic circuit of wound motor axle is asymmetric, rotor operating decentraction, or due to having in bearing absolutely
Electrostatic charging caused by the oil film of edge performance and have the support sewing up or core-lamination stack is improper etc. former thus results in axle magnetization
Or inductive impulse magnetic flux, it will make axle-bearing-base plate（Or support）Loop have shaft voltage and produce shaft current.Shaft current master
Affect to be that the bearing surface being caused by the electric arc crossing bearing film damages, because this electric current flow through contact point concentrate again minimum
Contact area, so after local oil film loses insulating effect, electric current density is very big, will produce electric arc and substantial amounts of heat, make oil film
Aging rapidly, accelerate damage of the bearing, this damage accounts for 20%-30% in motor bearings accident.So the damage that shaft current produces
Evil is immeasurable it is necessary to carry out insulation processing to electric current.
Generator amature is in the magnetic field of sinusoidal alternating, when electromotor because the reasons such as non-uniform air-gap cause magnetic circuit not
Symmetrically, when Exciting Windings for Transverse Differential Protection occurs to there is leakage magnetic flux near two points ground fault or generator shaft, all can be the two of generator shaft
Sensing alternating electromotive force occurs, if shaft current will be produced with the bearing formation closed-loop path of axle both sides between end.Runner plate and
Thrust bearing shoe valve and slide rotor and guide bearing all will suffer galvano-cautery because flowing through shaft current, cause the accidents such as tile kilning when serious.
Umbrella-type generator shafting is typically by upper shaft, slide rotor, rotor field spider, generator shaft, thrust collar, mirror
Plate, hydraulic turbine main shaft and runner etc. form.Top guide bearing is supported on outside slide rotor, lower guide bearing（Full umbrella-type unit not under
Guide bearing）It is supported on outside thrust collar or slide rotor, thrust bearing is supported on the downside of runner plate, water pilot bearing is supported on water wheels owner
Outside the slide rotor of axle.Umbrella-type generator group suffers galvano-cautery in order to avoid parts such as bearings because of shaft current, or even draws
Play the accidents such as tile kilning it will usually add felt pad at the bearing shell of top guide bearing and water pilot bearing, effectively block shaft current from cunning
Pass through between rotor and guide bearing.
Add the processing mode of felt pad although effectively having blocked shaft current from slide rotor and guide shaft at the bearing shell of guide bearing
Pass through between holding watt, but because the rigidity of felt pad is poor, the stability of whole shaft system of unit can be affected, increase
The vibration of unit and noise.Generating unit speed is higher, and felt pad is bigger to unit operation stability, vibration and noise effect, lance
Shield is more prominent.Guide bearing insulation simultaneously needs many places to insulate, and including guide bearing temperature detecting resistance, and is difficult to realize supervising in real time online
Control.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art and defect, this utility model provides a kind of umbrella-type water wheels and sends out
Motor shaft insulation system, goal of the invention of the present utility model is to solve prior art unit axis current problems, also carries simultaneously
The high support stiffness of shaft system of unit, and then enhance unit operation stability, reduce vibration and the noise of unit.
In order to solve above-mentioned problems of the prior art, this utility model is achieved through the following technical solutions：
A kind of umbrella-type generator axle insulation system, including upper shaft and slide rotor it is characterised in that：In upper shaft and
It is provided with the first insulating barrier, conductive layer and the second insulating barrier, described second insulating barrier is wrapped on the electrically conductive between slide rotor.
Be additionally provided with sleeve between described upper shaft and slide rotor, described sleeve be arranged on the first insulating barrier and upper shaft it
Between；Described first insulating barrier wrapped on sleeve.
Described sleeve is bonded with upper shaft and is connected together.
Described slide rotor and sleeve are linked together by interference fit.
Also include measurement ring and lower measurement ring, described upper measurement ring and lower measurement ring are fixed by cross-over block and bolt
On slide rotor.
Described conductive layer is connected with lower measurement ring by lead；Described slide rotor is electrically connected with upper measurement ring by bolt.
Described first insulating barrier and the second insulating barrier are the first insulating barrier and second being formed by Kapton respectively
Insulating barrier.
Described conductive layer is the conductive layer being formed by copper strips.
Compared with prior art, the beneficial technique effect that this utility model is brought shows：
The 1st, first insulating barrier, conductive layer and the second insulating barrier are set between upper shaft and slide rotor, can upper shaft with
Form ground floor insulation between conductive layer, between conductive layer and slide rotor, form second layer insulation, double hyer insulation has ensured that axle is exhausted
The reliability of edge, wherein one layer damage in insulation, another layer of insulation still can ensure that the safe and stable operation of unit, improves unit
The stability run, reduces vibration and the noise of unit.
The 2nd, sleeve is set between slide rotor and upper shaft, and slide rotor elder generation hot jacket is on the sleeve wrapping insulation, then will slide
Rotor and sleeve are arranged on upper shaft, which decrease the difficulty of slide rotor hot jacket, simultaneously facilitate slide rotor and sleeve from upper
Dismantle on the axle of end.
3rd, slide rotor is electrically connected with upper measurement ring by bolt, and conductive layer passes through lead and the electrical connection of lower measurement ring, upper end
Axle is electrically connected with sleeve, can be led to by the insulation resistance between upper measurement ring and lower measurement ring measurement slide rotor and conductive layer
Cross down the insulation resistance that measurement ring and upper shaft measure between upper shaft and conductive layer, upper measurement ring, lower measurement ring and upper shaft
Cylindrical side can arrange brushgear and carry out insulation measurement and can carry out far-end and dynamically monitor, and be conducive to monitor in real time axle to insulate
Situation, accident of preventing and treating occurs.
4th, the insulant that insulating layer material is selected can be Kapton or Conventional insulation pad, but
The good insulation preformance of the more conventional felt pad of Kapton, insulation thickness is little, and rigidity is big, can improve stablizing of unit operation
Property, reduce vibration and the noise of unit.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is this utility model slide rotor structural representation；
Fig. 3 is in this utility model Fig. 2 I partial enlarged drawing；
Fig. 4 is in this utility model Fig. 3 II partial enlarged drawing；
Fig. 5 is the wrapped structural representation of this utility model insulating barrier；
Fig. 6 position this utility model insulation measurement assembling schematic diagram；
Reference：1st, upper shaft, 2, slide rotor, 3, sleeve, the 4, first insulating barrier, 5, conductive layer, the 6, second insulating barrier,
7th, upper measurement ring, 8, cross-over block, 9, bolt, 10, lead, 11, top board, 12, insulation board, 13, lower measurement ring.
Specific embodiment
Embodiment 1
As this utility model one preferred embodiment, present embodiment discloses：
A kind of umbrella-type generator axle insulation system, including upper shaft 1 and slide rotor 2, in upper shaft 1 and slide rotor 2
Between be provided with the first insulating barrier 4, conductive layer 5 and the second insulating barrier 6, described second insulating barrier 6 wrapped on conductive layer 5.?
In the present embodiment, the first insulating barrier 4 and the second insulating barrier 6 can be from conventional insulant, such as felt pad.
Embodiment 2
As this utility model another embodiment, present embodiment discloses：A kind of umbrella-type generator axle insulation
Structure, including upper shaft 1 and slide rotor 2, is provided with the first insulating barrier 4, conductive layer 5 and between upper shaft 1 and slide rotor 2
Two insulating barriers 6, described second insulating barrier 6 wrapped on conductive layer 5.In the present embodiment, the first insulating barrier 4 and the second insulating barrier
6 can be from conventional insulant, such as felt pad；Also include measurement ring 7 and lower measurement ring 13, described upper measurement ring 7 He
Lower measurement ring 13 is passed through cross-over block 8 and is bolted on slide rotor 2；Described conductive layer 5 passes through lead 10 and lower measurement ring
13 connections；Described slide rotor 2 is electrically connected with upper measurement ring 7 by bolt.
Embodiment 3
As this utility model another embodiment, present embodiment discloses：
A kind of umbrella-type generator axle insulation system, including upper shaft 1 and slide rotor 2, in upper shaft 1 and slide rotor 2
Between be provided with the first insulating barrier 4, conductive layer 5 and the second insulating barrier 6, described second insulating barrier 6 wrapped on conductive layer 5；Institute
State and between upper shaft 1 and slide rotor 2, be additionally provided with sleeve 3, described sleeve 3 is arranged between the first insulating barrier 4 and upper shaft 1；
Described first insulating barrier 4 wrapped on sleeve 3；Described sleeve 3 and upper shaft 1 pass through to be bonded to be connected together；Described slide rotor 2 with
Sleeve 3 is linked together by interference fit.
First insulating barrier 4, conductive layer 5 and the second insulating barrier 6 can be that the mode being layering also may be used in the present embodiment
In the way of being wrapped layer by layer, during from Conventional insulation pad as insulating barrier, the first insulating barrier 4 is enclosed within upper shaft 1, conductive layer
5 are enclosed within the first insulating barrier 4, and the second insulating barrier 6 is enclosed within conductive layer 5；First insulating barrier 4, conductive layer 5 and the second insulating barrier 6
Annexation determined by the material selected or wrapped mode is attached.
In the present embodiment, the first insulating barrier 4 and the second insulating barrier 6 can be from conventional insulant, such as felt pad,
Can also be the first insulating barrier 4 and the second insulating barrier 6 being formed by Kapton, the material of conductive layer 5 in the present embodiment
Material can be conventional conductive material or the conductive layer 5 being formed by copper strips.
Embodiment 4
As this utility model another embodiment, present embodiment discloses：
A kind of umbrella-type generator axle insulation system, including upper shaft 1 and slide rotor 2, in upper shaft 1 and slide rotor 2
Between be provided with the first insulating barrier 4, conductive layer 5 and the second insulating barrier 6, described second insulating barrier 6 wrapped on conductive layer 5；Institute
State and between upper shaft 1 and slide rotor 2, be additionally provided with sleeve 3, described sleeve 3 is arranged between the first insulating barrier 4 and upper shaft 1；
Described first insulating barrier 4 wrapped on sleeve 3；Described sleeve 3 is bonded with upper shaft 1 and is connected together；Described slide rotor 2 and sleeve
3 are linked together by interference fit；
Also include measurement ring 7 and lower measurement ring 13, described upper measurement ring 7 and lower measurement ring 13 pass through cross-over block 8 He
It is bolted on slide rotor 2；Described conductive layer 5 is connected with lower measurement ring 13 by lead 10；Described slide rotor 2 passes through bolt
Electrically connect with upper measurement ring 7；
In the present embodiment, the first insulating barrier 4 and the second insulating barrier 6 are the first insulating barriers being formed by Kapton
4 and second insulating barrier 6, conductive layer 5 is the conductive layer 5 being formed by copper strips in the present embodiment.
In the present embodiment the first insulating barrier 4, conductive layer 5 and the second insulating barrier 6 press Fig. 5 around packet mode wrapped in sleeve 3
On, slide rotor 2 is fixed on the sleeve 3 winding the first insulating barrier 4, conductive layer 5 and the second insulating barrier 6 by way of hot jacket,
Pass through interference fit transmitting torque between the two, between sleeve 3 and conductive layer 5, form ground floor insulation, conductive layer 5 and slide rotor
Form the insulation of second layer axle between 2；Upper measurement ring 7 and lower measurement ring 13 are fixed on slide rotor 2 by cross-over block 8 and bolt 9
On；A part is stretched out on conductive layer 5 and lead 10 is fixed together by two pieces of insulation boards 12, top board 11 and screw；Lead
10 upper ends are arranged in lower measurement ring 13 by screw；Sleeve 3 passes through bonded being arranged on upper shaft 11.
The operation principle of the present embodiment is：
First insulating barrier 4, conductive layer 5 and the second insulating barrier 6 be set between sleeve 3 and slide rotor 2, such sleeve 3 and leading
Form ground floor insulation between electric layer 5, between conductive layer 5 and slide rotor 2, form the insulation of second layer axle, double-deck axle insulation ensures
The reliability of axle insulation, wherein one layer damage in insulation, another layer of insulation still can ensure that the safe and stable operation of unit, and poly-
The good insulation preformance of the more conventional felt pad of imide membrane, insulation thickness is little, and rigidity is big.Slide rotor 2 passes through bolt and upper measurement
Ring 7 is interconnected, and conductive layer 5 passes through lead 10 and lower measurement ring 13 is interconnected, and upper shaft 1 and sleeve 3 are interconnected, permissible
Insulation resistance between slide rotor 2 and conductive layer 5 is measured by upper measurement ring 7 and lower measurement ring 13, by lower measurement ring 13 He
Upper shaft 1 measures the insulation resistance between upper shaft 1 and conductive layer 5, upper measurement ring 7, lower measurement ring 13 and the cylindrical side of upper shaft 1
Brushgear can be arranged carry out insulation measurement and far-end can be carried out dynamically monitor.
Claims (8)
1. a kind of umbrella-type generator axle insulation system, including upper shaft（1）And slide rotor（2）It is characterised in that：In upper end
Axle（1）And slide rotor（2）Between be provided with the first insulating barrier（4）, conductive layer（5）With the second insulating barrier（6）, described second insulation
Layer（6）Wrapped in conductive layer（5）On.
2. as claimed in claim 1 a kind of umbrella-type generator axle insulation system it is characterised in that：Described upper shaft（1）
And slide rotor（2）Between be additionally provided with sleeve（3）, described sleeve（3）It is arranged on the first insulating barrier（4）With upper shaft（1）Between；
Described first insulating barrier（4）Wrapped in sleeve（3）On.
3. as claimed in claim 2 a kind of umbrella-type generator axle insulation system it is characterised in that：Described sleeve（3）With
Upper shaft（1）It is connected together by being bonded.
4. as claimed in claim 2 or claim 3 a kind of umbrella-type generator axle insulation system it is characterised in that：Described slide rotor
（2）With sleeve（3）Linked together by interference fit.
5. as claimed in claim 1 or 2 a kind of umbrella-type generator axle insulation system it is characterised in that：Also include survey
Amount ring（7）With lower measurement ring（13）, described upper measurement ring（7）With lower measurement ring（13）By cross-over block（8）And bolt（9）Gu
It is scheduled on slide rotor（2）On.
6. as claimed in claim 5 a kind of umbrella-type generator axle insulation system it is characterised in that：Described conductive layer（5）
By lead（10）With lower measurement ring（13）Connect；Described slide rotor（2）By bolt（9）With upper measurement ring（7）Electrical connection.
7. a kind of umbrella-type generator axle insulation system as described in claim 1,2,3 or 6 it is characterised in that：Described
One insulating barrier（4）With the second insulating barrier（6）It is the first insulating barrier being formed by Kapton respectively（4）With the second insulating barrier
（6）.
8. a kind of umbrella-type generator axle insulation system as described in claim 1,2,3 or 6 it is characterised in that：Described lead
Electric layer（5）It is the conductive layer being formed by copper strips（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620602260.0U CN205945337U (en) | 2016-06-20 | 2016-06-20 | Umbrella hydrogenerator axle insulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620602260.0U CN205945337U (en) | 2016-06-20 | 2016-06-20 | Umbrella hydrogenerator axle insulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205945337U true CN205945337U (en) | 2017-02-08 |
Family
ID=57933414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620602260.0U Active CN205945337U (en) | 2016-06-20 | 2016-06-20 | Umbrella hydrogenerator axle insulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205945337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528407A (en) * | 2016-06-20 | 2017-12-29 | 东方电气集团东方电机有限公司 | A kind of umbrella-type generator axle insulation system |
-
2016
- 2016-06-20 CN CN201620602260.0U patent/CN205945337U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107528407A (en) * | 2016-06-20 | 2017-12-29 | 东方电气集团东方电机有限公司 | A kind of umbrella-type generator axle insulation system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |