CN201536287U - Generator group reconstructed through decompressing and increasing capacity - Google Patents
Generator group reconstructed through decompressing and increasing capacity Download PDFInfo
- Publication number
- CN201536287U CN201536287U CN2009203074393U CN200920307439U CN201536287U CN 201536287 U CN201536287 U CN 201536287U CN 2009203074393 U CN2009203074393 U CN 2009203074393U CN 200920307439 U CN200920307439 U CN 200920307439U CN 201536287 U CN201536287 U CN 201536287U
- Authority
- CN
- China
- Prior art keywords
- rotor coil
- coil
- stator
- stator coil
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The utility model relates to a medium-small hydro-turbo generator group reconstructed through increasing capacity and decompressing. The generator group adopts the technical solution for solving the technical problems that the hydro-turbo generator group comprises a stator coil, a rotor coil and a structure layout, wherein the stator coil comprises an F grade magnet wire and an F grade insulating component, wherein the insulating component is combined with a magnetic wire through secondary thermal die pressing, the stator coil adopts a multiple branch circuit parallel structure, the rotor coil comprises an oil rotor coil, and is further provided with a new rotor coil, the new rotor coil comprises an F grade magnetic wire and an F grade insulating component, the oil rotor coil comprises an F grade insulating component which is combined with the magnetic wire through secondary thermal die pressing, and the rotor coil and an upper and a lower bearing plates form an integral body through thermal pressing and solidifying. The rated voltage of the stator coil is lowered to 400V from 6000V, the insulating performance of the generator is extremely reliable, and meanwhile, the generator group has the advantages of excellent thermal stability, low medium consumption, high mechanical intensity and the like.
Description
Technical field:
The utility model relates to the water generating technical field, relates in particular to the Medium and Small Hydraulic Generator group that a kind of machine is transformed by the increase-volume step-down.
Background technology:
The shortage of China's electric energy has become well-known a great problem, and for the regenerative resource of this green of water power, country is just taking more preferential policy, the newly-built a large amount of hydroelectric station of the people that encourages investment.And domestic old hydroelectric station of putting into operation in the past in the nineties, occupy suitable ratio in the water power total installation of generating capacity at home, operation through decades, the following problem of these power station ubiquities: 1. equipment is outmoded, the inefficiency of machine level, undercapacity, the electric equipment aging phenomenon is especially serious, unit all belongs to operation in spite of illness, at any time equipment fault may take place; 2. because the variation of power station hydraulic power potentials, or the unit type selecting is incorrect, and the wet season is abandoned water in a large number, and water resource waste is serious.Therefore, these middle-size and small-size old power stations are badly in need of old unit is transformed at present, carry out the increase-volume step-down and transform on the basis of old unit, and old unit is transformed into a big capacity low pressure unit.China discloses a CN101075764A document on November 21st, 2007; name is called the capacity-increasing transformation technology of Medium and Small Hydraulic Generator; it discloses the hydraulic generator unit behind a kind of capacity-increasing transformation; but there are some shortcomings in this generating set: generating set is big capacity high generating set; transforming its voltage of back is 6300V; its improvement cost is big; and operating cost height; this group of motors need be equipped with equipment such as correspondingly transmission ﹠ distribution, control, protection in addition; these equipment cost height, and complexity is set.
Summary of the invention:
The utility model has mainly solved the problem that above-mentioned power station exists, and a kind of generating set of transforming by the increase-volume step-down is provided.
The technical scheme that its technical problem that solves the utility model adopts is: the utility model comprises stator coil, rotor coil and topology layout thereof,
Wherein the structure of stator coil is:
Described stator coil comprises F level electromagnetic wire and F class F insulation assembly, electromagnetic wire is that no lacquer type dacron glass yarn is around the junction isolation flat type copper wire, insulation assembly is a paulownia horse epoxy glass mica paper tape, improved the class of insulation, attenuate the thickness of insulating barrier, enlarged coil water diversion part net sectional area 15%? 0%, effectively increased unit capacity.
This insulation assembly combines with electromagnetic wire by the secondary hot moulding, has effectively guaranteed the insulating barrier uniformity and reliability.
Described stator coil adopts the multiple branch circuit parallel-connection structure; Adopt the multiple branch circuit parallel-connection structure to increase stator current, reached the purpose that reduces rated voltage.
The structure of rotor coil is:
Rotor coil comprises old rotor coil, also be provided with the same material of old rotor coil, same specification, with the new rotor coil of shape, this new rotor coil is welded on old rotor coil one end, described new rotor coil comprises F level electromagnetic wire and F class F insulation assembly, insulation system combines with electromagnetic wire by the secondary hot moulding, and old rotor coil comprises F class F insulation assembly; Described rotor coil is arranged on up and down between the insulating pad, and rotor coil and last lower bolster form an integral body by hot-press solidifying, the insulating barrier of rotor coil with do not have the slit up and down between the insulating pad, solved because of tying grey creepage problem.
As a kind of preferred version of such scheme, described F level electromagnetic wire for no lacquer type dacron glass yarn around the junction isolation flat type copper wire, F class F insulation assembly is paulownia horse epoxy glass mica paper tape or Nomex insulating paper.
As a kind of preferred version of such scheme, it is multichannel that described stator coil adopts a way, and it decide according to concrete motor, and stator coil is around the home in the cell body on stator, each cell body embedded be wound with 2 coils on bottom.Branch road is 6 the tunnel in the utility model.
Is rotor coil turn-to-turn insulation component thickness 0.08mm as a kind of preferred version of such scheme? .11mm.
Is the described thickness of insulating pad up and down 3mm as a kind of preferred version of such scheme? mm.
The utility model has the advantages that: realize the generator pressurization in the time of the generator increase-volume, can significantly reduce the improvement cost and the maintenance cost of generating set, increase-volume simultaneously can more effectively utilize water resource, improves the unit economic benefit.Motor adopts new insulating material and new manufacture craft, and the insulation property of generator, mechanical performance and thermal stability have all had large increase, and the operational reliability of unit is also guaranteed accordingly.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model stator coil multiple branch circuit parallel-connection structure schematic diagram.
Embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described.
Embodiment:
Small hydro turbine group of the present utility model is keeping former generating set stator core, under the prerequisite of rotor core critical piece, transform by the step-down capacity increasing technique, the generating set of original power 500kW, stator voltage 6.3kV is transformed into the big capacity low pressure generating set of power 630kW, stator voltage 400V, and this step-down capacity-increasing transformation technology mainly is placed on the following aspects:
(1), utilizes the thickness of insulating layer of new insulation material attenuate stator coil;
(2), utilize multiple branch circuit layout in parallel, increase stator current below 16 times, realize reducing stator rated voltage purpose;
(3), adopt the Nomex insulating paper to improve the rotor coil insulation system, reduce the insulating barrier occupation space, realize adding circle and improve the class of insulation.
Improved generating set has following emphasis structure:
The stator coil part
In order to increase unit electric capacity, under the fixed-size prerequisite of stator core slot,, adopt novel insulating material and secondary hot press method by optimizing the structure of stator coil, the insulation thickness of attenuate insulation assembly increases the net sectional area of stator coil.
And the utility model stator coil adopts 95451H paulownia horse epoxy mica tape and the sintering insulated flat type copper wire of no lacquer type dacron glass yarn bag.Old-fashioned generating set stator coil generally adopts double glass fiber copper-clad lenticular wire, is the insulation thickness of this pair glass thread 0.3mm? .35mm, thickness is thicker, and two glass thread surface smoothnesss are poor, insulation allowance is big, therefore stipulates in standard, between every strand, short transverse is provided with the 0.03mm gap, and Width is provided with the 0.2mm gap; And the utility model stator coil adopts the sintering insulated flat type copper wire of no lacquer type dacron glass yarn bag, the sintering insulated flat type copper wire of this no lacquer type dacron glass yarn bag adopts the domestic state-of-the-art F level electromagnetic wire of GE Canada Company insulated conductor standard development, compare with common electromagnetic wire, having that insulation is thin, dielectric strength is high, insulation tack and advantage such as adhesiveness is good, smooth surface is even, can make full use of the more useful space in the stator core slot after adopting the sintering insulated flat type copper wire of no lacquer type dacron glass yarn bag, the sectional area of lead can increase by 25%.
Insulation assembly adopts 9545-1H paulownia horse epoxy mica tape, this insulating material dielectric strength height, than old-fashioned 5438-1 mica paper tape, the insulation against ground of former 6300V level stator line need be wrapped ten layers, and bilateral thickness is 4.5mm, and only need nine layers now just enough, its bilateral thickness is 4.05mm, and the sectional area of stator coil guiding can increase by 25%, in addition, the fixed subcoil insulating assembly adopts the secondary hot press method, has effectively guaranteed the insulating barrier uniformity and reliability.
Stator coil adopts the multiple branch circuit parallel-connection structure to increase stator current, reaches to reduce stator rated voltage purpose.It is 6 the tunnel that this stator coil adopts a way, and as shown in Figure 1, main line U1, V1, W1 and U2, V2, W2 also are the head and tail of three phase windings; And be provided with 6 road branch roads 1, and totally 18 branch roads, 18 statures and U1, V1, W1 also connect; 18 tails and U2, V2, W2 also connect, and become state in parallel between each branch road; Three phase windings claim layout in pairs, and stator coil in the cell body on stator, has 6 coils around the home around the home in each cell body, satisfied the stator coil burden requirement.
The rotor coil part
Rotor coil is provided with the same material of old rotor coil, same specification, with the new rotor coil of shape on the basis of the former rotor coil of haveing been friends in the past again, and this new rotor coil is welded on old rotor coil one end.This new rotor coil also adopts 9545-1H paulownia horse epoxy mica tape and the sintering insulated flat type copper wire of no lacquer type dacron glass yarn bag.
Adopt the F class F insulating material F between the rotor magnetic pole coil turn.Be generally the B-class insulation material between old unit rotor magnetic pole coil turn, its thickness now adopts the Nomex insulating paper more than 0.28mm, is thickness 0.08? .11mm, and the dielectric voltage withstand performance is better than former insulating material, established reliable assurance for pole coil adds the circle transformation.
Between the insulating pad, rotor coil and last lower bolster formed an integral body by hot-press solidifying about described rotor coil was arranged on.
Insulating pad and insulating barrier are generally the branch body structure about the former unit magnetic pole, i.e. split processing separately.In when assembling, in order pole coil is pressed in up and down in the middle of the two insulation hot plates.Insulating barrier and insulate up and down a passage that capacity is creepage is just arranged between the hot plate like this.Operation year, it was creepage to tie ash long afterwards, and the insulation resistance of magnetic pole will seriously descend.Present embodiment adopts insulating barrier and insulating pad disposable integral heat pressing process up and down, and insulating barrier does not just have the slit between the insulating pad up and down, has just solved because of tying the creepage defect of ash.
Former magnetic pole insulating pad up and down respectively is about 10mm, mainly is in order to adopt enough thickness can guarantee the creepage distance of pole coil.The plate thickness up and down of insulating barrier is 3-5mm in the present embodiment, has reduced the non-effective thickness of pole coil effectively.
The pole coil insulation against ground is a U font insulation system, has improved insulating reliability.
Add and be surrounded by insulating material in two ends end to end at every pole coil, eliminate being easy to generate creepage hidden danger herein.
The structure of this rotor coil increases insulation property, the globality of pole coil, has also reduced the actual height of coil simultaneously, makes the rotor coil number of turn can increase 10%--15%, has guaranteed that demand of technical standard is satisfied in the current capacity and the temperature rise of rotor coil after the increase-volume.
The renovation technique step of the utility model rotor coil is:
(1), old copper or spongy lead circle are carried out anaerobic annealing in process (softening coil eliminates stress and burnouts old insulation), cleaning turn-to-turn polishing surface manifests the material true qualities.
(2) number of turn that increases according to the design needs and the same material of old coil, same specification, with the rotor coil of shape, be welded on old coil one end.
(3) coil is colded pressing shaping.
(4) bag pad new F class F insulating material F (paulownia horse epoxy glass mica paper tape or Menac paper).
(5) with coil and insulating pad integral heat pressure curing up and down.
(6) the unnecessary insulating material of chipping coil surface, reconditioning is smooth again after the cooling.
(7) each coil is carried out the AC impedance test.
(8) rotor coil and the iron core collocation of weighing, symmetrical counterweight mounts, urgent taper key.
(9) check that rotor place circle is of the required size.
(10) rotor coil withstand voltage test over the ground.
(11) the whole dynamic balance check of rotor.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as rotor coil, stator coil, cell body morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (5)
1. the generating set by the step-down capacity-increasing transformation comprises stator coil, rotor coil and topology layout thereof, it is characterized in that:
The structure of stator coil is:
Described stator coil comprises F level electromagnetic wire and F class F insulation assembly, and this insulation assembly combines with electromagnetic wire by the secondary hot moulding, and described stator coil adopts the multiple branch circuit parallel-connection structure;
The structure of rotor coil is:
Rotor coil comprises old rotor coil, also be provided with the same material of old rotor coil, same specification, with the new rotor coil of shape, this new rotor coil is welded on old rotor coil one end, described new rotor coil comprises F level electromagnetic wire and F class F insulation assembly, old rotor coil comprises F class F insulation assembly, and insulation assembly combines with electromagnetic wire by the secondary hot moulding; Between the insulating pad, rotor coil and last lower bolster formed an integral body by hot-press solidifying about described rotor coil was arranged on.
2. a kind of generating set according to claim 1 by the step-down capacity-increasing transformation, it is characterized in that described F level electromagnetic wire for no lacquer type dacron glass yarn around the junction isolation flat type copper wire, F class F insulation assembly is paulownia horse epoxy glass mica paper tape or Nomex insulating paper.
3. a kind of generating set by the step-down capacity-increasing transformation according to claim 1 is characterized in that it is multichannel that described stator coil adopts a way, and stator coil is around the home in the cell body on stator, each cell body embedded be wound with 2 coils on following.
4. a kind of generating set by the step-down capacity-increasing transformation according to claim 1 is characterized in that rotor coil turn-to-turn insulation component thickness is 0.08mm-0.11mm.
5. a kind of generating set by the step-down capacity-increasing transformation according to claim 1 is characterized in that the described thickness of insulating pad up and down is 3mm-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203074393U CN201536287U (en) | 2009-08-05 | 2009-08-05 | Generator group reconstructed through decompressing and increasing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203074393U CN201536287U (en) | 2009-08-05 | 2009-08-05 | Generator group reconstructed through decompressing and increasing capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201536287U true CN201536287U (en) | 2010-07-28 |
Family
ID=42536061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203074393U Expired - Fee Related CN201536287U (en) | 2009-08-05 | 2009-08-05 | Generator group reconstructed through decompressing and increasing capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201536287U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634216A (en) * | 2016-02-19 | 2016-06-01 | 东莞市富源实业有限公司 | Expansion method for synchronous salient pole generator |
-
2009
- 2009-08-05 CN CN2009203074393U patent/CN201536287U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634216A (en) * | 2016-02-19 | 2016-06-01 | 东莞市富源实业有限公司 | Expansion method for synchronous salient pole generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101075764B (en) | Technology for compatibilizing middle-minihydraulic turbine generator | |
| CN202871491U (en) | Dry type iron core starting reactor for air conditioner cold water medium voltage unit | |
| CN201508760U (en) | On-load tap changer of high voltage D connection | |
| CN203232785U (en) | Dry-type transformer | |
| CN202839279U (en) | Three-phase three-winding traction and power hybrid transformer | |
| CN201536287U (en) | Generator group reconstructed through decompressing and increasing capacity | |
| CN201741561U (en) | Power transformer with shell type structure | |
| CN102938592B (en) | Thickened machine winding slot processing method | |
| CN102360772A (en) | Iron chip type composite structure of large transformer | |
| CN101996755A (en) | Amorphous alloy 10kV dry type transformer used for wind power generation | |
| CN201812643U (en) | Dry-type transformer for testing wind-driven generator | |
| CN201540757U (en) | Film sintering transposition wire | |
| CN214674607U (en) | Single-double layer winding of three-phase motor | |
| CN204289068U (en) | A kind of on-load voltage regulation single-phase traction transformer | |
| CN207265765U (en) | A kind of side's copper wire motor stator structure | |
| CN209168854U (en) | Single-stranded flat copper strip vertical winding hollow coil suitable for track circuit | |
| CN102420043A (en) | Single-phase high-impedance auto-transformer | |
| CN203746639U (en) | Line-terminal on-load voltage regulating single-phase 220kV high-impedance transformer | |
| CN202977146U (en) | Single-phase superhigh-voltage large-capacity off-circuit-regulation alternating current step-up transformer | |
| CN201126755Y (en) | Transformer structure capable of improving impedance | |
| CN201359911Y (en) | Voltage and capacitance regulating transformer with two switches | |
| CN216719680U (en) | High-voltage dual-voltage photovoltaic transformer | |
| CN201134337Y (en) | Electrostatic ring of transformer with inter-winding column linking function | |
| CN218676724U (en) | Transformer coil structure | |
| CN109560639A (en) | A kind of side's copper wire motor stator structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20160805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |