CN106300819A - There is the insulation restorative procedure of high electricapparatus intensity - Google Patents
There is the insulation restorative procedure of high electricapparatus intensity Download PDFInfo
- Publication number
- CN106300819A CN106300819A CN201610702011.3A CN201610702011A CN106300819A CN 106300819 A CN106300819 A CN 106300819A CN 201610702011 A CN201610702011 A CN 201610702011A CN 106300819 A CN106300819 A CN 106300819A
- Authority
- CN
- China
- Prior art keywords
- insulation
- nomex
- reparation
- trade mark
- shaped
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0006—Disassembling, repairing or modifying dynamo-electric machines
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention discloses a kind of insulation restorative procedure with high electricapparatus intensity, in steam turbine generator normal operation in life cycle, unavoidably can be because all accidentalia cause the even broken pressure of breakage of stator bar insulation or rotor leading wire insulation etc..In repair process; first thoroughly clear up near broken pressure point; it is simultaneous for position and the shape of breaking point; make the U-shaped insulation being suitable for repairing broken pressure point; after broken pressure point being cleared up and is filled space reparation; by U-shaped insulation sleeve outside broken pressure point, and fix with bonded adhesives, damaged part is repaired and protects.The insulation after reparation in this way, not only has higher electrical strength, and mechanical strength is the highest, especially under rotor height rotating speed ground centrifugal action, and the secondary damage of weak part after being possible to prevent to repair, it is ensured that repairing quality.
Description
Technical field: the present invention relates to a kind of insulation restorative procedure with high electricapparatus intensity.
Background technology: in steam turbine generator normal operation in life cycle, unavoidably can because all accidental because of
Element causes the even broken pressure of breakage of stator bar insulation or rotor leading wire insulation etc..In conventional insulation restorative procedure, need
Broken parts is removed according to the inverted sequence of the order that rolls off the production line, reinstalls according still further to normal procedure after having repaired and test,
Virtually, make repairing efficiency extend significantly, in turn result in unnecessary cost allowance.The method using the present invention is repaiied
Multiple breakage insulation, can make bar or lead-in wire be repaired in unit, saves operation when removing and return dress long, improves
Remediation efficiency.Additionally, the insulation after repairing in this way, not only having higher electrical strength, mechanical strength is the highest, and
Having certain toughness, especially under rotor height rotating speed ground centrifugal action, after being possible to prevent to repair, the secondary of weak part damages
Wound, it is ensured that repairing quality.
Summary of the invention: it is an object of the invention to provide a kind of insulation restorative procedure with high electricapparatus intensity,
Can the time is short, efficiently complete reparation task, reduce the probability repairing position secondary damage.
The technical scheme that the present invention takes is:
A. clear up firstly the need of to damaged area, generally the most adjoint during the even broken pressure of damaged, scaling loss
The high-temperature heating insulation is the most burnt, burnt carbon dust, heat insulation complete liquidation excessively need to be fallen, and use vacuum cleaner during cleaning
All sucking-offs, it is ensured that do not have the discharge channel of remnants after cleaning；
B. need the shape to breaking point and size to be determined, if restoring area is straightway, measure the length of breaking point
Wide size, if restoring area is curved section, in addition to the length and width size of breaking point, also needs to measure breaking point and curvature around；
C. the size insulated according to the U-shaped of the size design reparation measured, and find according to size or make U-shaped insulation
Mould, if any the spare unit parts identical with remanufactured component, available spare unit parts are as mould；
D. making U-shaped insulation on the mould chosen, selecting the one side gluing trade mark is that the composite-insulating paper of Nomex is as U
The base material of shape insulation, the especially position after repaiied position is understood by high rotating speed centrifugal action, or reparation in normal operation
Can bear External Force Acting continually, with the further toughness improved after repairing, the trade mark is the number of plies root of the composite-insulating paper of Nomex
Determining according to proof voltage grade required after repairing, the general trade mark is the composite-insulating paper number of plies and the proof voltage hierarchical relationship of Nomex
For, proof voltage 8.0kV and following, the trade mark is the composite-insulating paper half-lap 1 layer of Nomex；Proof voltage 15kV and following, the trade mark is
The composite-insulating paper half-lap of Nomex 2 layers；Proof voltage 20kV and following, the trade mark is the composite-insulating paper half-lap 4 layers of Nomex,
Meet proof voltage value after repairing, also need to consider U-shaped insulation itself along face size i.e. arcing distance, will be before U-shaped insulation making
Carrying out demoulding between mould and U-shaped insulation to process, the trade mark is glues high with interlayer brushing adhesive strength of compound inslation ply of paper of Nomex
Connecing glue, after bonded adhesives is fully cured, U-shaped insulation completes；
E. it is filled with repairing, in repair process to the damaged area after cleaning with Shao Jiao mica powder teeter chamber temperature epoxy glue
It should be noted that necessarily the insulated part of disappearance is tamped, it is ensured that repair and insulation does not has air dielectric, fill the profile chi after repairing
Very little should flush in original configuration size；
After room temperature epoxy glue used in reparation the most to be filled is fully cured, 3 faces of U-shaped insulating inner that will make
The bonded adhesives that brushing adhesive strength is high, and be buckled on breaking point, it is ensured that breaking point is positioned at the geometric center position of U-shaped insulation, treats
Bonded adhesives is fully cured, and damaged reparation is complete.
The solution have the advantages that:
1) method is convenient, repair time is short
In conventional insulation restorative procedure, often due to repair limited space, it has to broken parts is suitable according to rolling off the production line
The inverted sequence of sequence removes, and reinstalls according still further to normal procedure after having repaired, and extends repairing efficiency significantly, waste
Substantial amounts of manpower and materials, have in turn resulted in unnecessary cost allowance.The method using the present invention repairs breakage insulation, fills
Repair and U-shaped insulation is repaired to overcome and repaired the problem that space is little, it is not necessary to reparation is loseed and removes, bar can be made or draw
Line is repaired in unit, save remove and return dress long time operation, improve remediation efficiency.
2) material used by reparation is simple, rehabilitation cost is low
The trade mark used in repair process is that the composite-insulating paper of Nomex, bonded adhesives, few glue mica powder etc. are generating
Machine manufactures extremely conventional material, and material acquiring way is wide, and the cost of material is low.
3) repairing quality is good, prevent secondary damage
In common repair methods, the most only focus on the reparation of electrical strength, but ignore mechanical strength, in this way
Reparation after insulation, not only there is higher electrical strength, mechanical strength is the highest, and the raw material trade mark used by reparation is
The composite-insulating paper of Nomex itself has certain toughness, especially under rotor height rotating speed ground centrifugal action, is possible to prevent to repair
The secondary damage of weak part after multiple, it is ensured that repairing quality, and common repair methods often ignores this point.
The present invention is that a merger electrical strength and the method for mechanical strength of providing, the employing of this restorative procedure are repaired in insulation
The trade mark to be that the composite-insulating paper of Nomex, epoxy glue, mica powder etc. are during electromotor manufactures extremely conventional and the most honest and the cleanest
The material of valency, therefore rehabilitation cost is the lowest；Reparation space required for this restorative procedure is little, it is not necessary to removed by remanufactured component
Repair, save remove and return dress long time operation, therefore repair time is short；This restorative procedure have employed filling insulation and
After the reparation of U-shaped insulation, there is electrical strength and the mechanical strength of high intensity, therefore repair rear stability high, especially at rotor
Lead-in wire can play irreplaceable effect in repairing.The present invention has good application prospect, for the safety of steam turbine generator
Operation lays the foundation.
Fig. 1 is present invention process block diagram
Fig. 2 is renovation technique displaying figure
Detailed description of the invention:
A. as it is shown in figure 1, by bar insulation 1 repair as a example by, it is necessary first to damaged area 2 is cleared up, ordinary circumstance
During the even broken pressure of lower breakage, scaling loss, all high-temperature heating along with insulation are the most burnt, during cleaning need to by burnt carbon dust,
Cross heat insulation complete liquidation to fall, and with the whole sucking-off of vacuum cleaner, it is ensured that there is no the discharge channel of remnants after cleaning；
B. need the shape to breaking point and size to be determined, if restoring area is straightway, measure the length of breaking point
Wide size, if restoring area is curved section, in addition to the length and width size of breaking point, also needs to measure breaking point and curvature around；
C. the size insulated according to the U-shaped of the size design reparation measured, and find according to size or make U-shaped insulation
Mould, if any the spare unit parts identical with remanufactured component, available spare unit parts are as mould；
D. making U-shaped insulation on the mould chosen, selecting the one side gluing trade mark is that the composite-insulating paper of Nomex is as U
The base material of shape insulation, the especially position after repaiied position is understood by high rotating speed centrifugal action, or reparation in normal operation
Can bear External Force Acting continually, with the further toughness improved after repairing, the trade mark is the number of plies root of the composite-insulating paper of Nomex
Determining according to proof voltage grade required after repairing, the general trade mark is the composite-insulating paper number of plies and the proof voltage hierarchical relationship of Nomex
For, proof voltage 8.0kV and following, the trade mark is the composite-insulating paper half-lap 1 layer of Nomex；Proof voltage 15kV and following, the trade mark is
The composite-insulating paper half-lap of Nomex 2 layers；Proof voltage 20kV and following, the trade mark is the composite-insulating paper half-lap 4 layers of Nomex,
Meet proof voltage value after repairing, also need to consider U-shaped insulation itself along face size i.e. arcing distance, will be before U-shaped insulation making
Carrying out demoulding between mould and U-shaped insulation to process, the trade mark is glues high with interlayer brushing adhesive strength of compound inslation ply of paper of Nomex
Connecing glue, after bonded adhesives is fully cured, U-shaped insulation completes；
E. form implant 3 with Shao Jiao mica powder teeter chamber temperature epoxy glue to be filled with repairing to the damaged area after cleaning
Multiple, it should be noted that necessarily the insulated part of disappearance is tamped in repair process, it is ensured that to repair in insulation and there is no air dielectric, fill
Overall dimensions after reparation should flush in original configuration size；
After room temperature epoxy glue used in reparation the most to be filled is fully cured, inside the U-shaped insulation 4 that will make 3
The bonded adhesives that topcoating brush adhesive strength is high, and be buckled on breaking point, it is ensured that breaking point is positioned at the geometric center position of U-shaped insulation,
Treat that bonded adhesives is fully cured, damaged reparation complete 5.
In sum, this invention is that insulation repairs a merger electrical strength and the method for mechanical strength of providing, originally
Method rehabilitation cost is low, and the reparation duration is short, repairs rear stability high, has good application prospect, for the peace of steam turbine generator
Row for the national games lays the foundation.
Claims (1)
1. there is an insulation restorative procedure for high electricapparatus intensity, it is characterized in that:
A. clear up firstly the need of to damaged area, generally all along with absolutely during the even broken pressure of damaged, scaling loss
The high-temperature heating of edge is the most burnt, need to burnt carbon dust, heat insulation complete liquidation excessively be fallen during cleaning, and whole with vacuum cleaner
Sucking-off, it is ensured that do not have the discharge channel of remnants after cleaning；
B. need the shape to breaking point and size to be determined, if restoring area is straightway, measure the length and width chi of breaking point
Very little, if restoring area is curved section, in addition to the length and width size of breaking point, also need to measure breaking point and curvature around；
C. the size insulated according to the U-shaped of the size design reparation measured, and find or make the mould of U-shaped insulation according to size
Tool, if any the spare unit parts identical with remanufactured component, available spare unit parts are as mould；
D. making U-shaped insulation on the mould chosen, the composite-insulating paper selecting the one side gluing trade mark to be Nomex is exhausted as U-shaped
The base material of edge, especially when repaiied position, in normal operation, meeting can frequency by the position after high rotating speed centrifugal action, or reparation
Bearing External Force Acting, with the further toughness improved after repairing, the trade mark is that the number of plies of the composite-insulating paper of Nomex is according to repairing numerously
After multiple, required proof voltage grade determines, the general trade mark is that the composite-insulating paper number of plies of Nomex is with proof voltage hierarchical relationship, resistance to
Voltage 8.0kV and following, the trade mark is the composite-insulating paper half-lap 1 layer of Nomex；Proof voltage 15kV and following, the trade mark is Nomex
Composite-insulating paper half-lap 2 layers；Proof voltage 20kV and following, the trade mark is the composite-insulating paper half-lap 4 layers of Nomex, meets
Proof voltage value after reparation, also need to consider U-shaped insulation itself along face size i.e. arcing distance, will be at mould before U-shaped insulation making
And carry out demoulding between U-shaped insulation and process, the trade mark is bonding high with interlayer brushing adhesive strength of the compound inslation ply of paper of Nomex
Glue, after bonded adhesives is fully cured, U-shaped insulation completes；
E. it is filled with repairing to the damaged area after cleaning with Shao Jiao mica powder teeter chamber temperature epoxy glue, repair process to be noted
Meaning, necessarily tamps the insulated part of disappearance, it is ensured that repairs and does not has air dielectric in insulation, and filling the overall dimensions after repairing should
Flush in original configuration size；
After room temperature epoxy glue used in reparation the most to be filled is fully cured, 3 the topcoating brushes of U-shaped insulating inner that will make
The bonded adhesives that adhesive strength is high, and be buckled on breaking point, it is ensured that breaking point is positioned at the geometric center position of U-shaped insulation, treats bonding
Glue is fully cured, and damaged reparation is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610702011.3A CN106300819B (en) | 2016-08-22 | 2016-08-22 | Insulation restorative procedure with high electricapparatus intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610702011.3A CN106300819B (en) | 2016-08-22 | 2016-08-22 | Insulation restorative procedure with high electricapparatus intensity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106300819A true CN106300819A (en) | 2017-01-04 |
| CN106300819B CN106300819B (en) | 2018-08-21 |
Family
ID=57662362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610702011.3A Active CN106300819B (en) | 2016-08-22 | 2016-08-22 | Insulation restorative procedure with high electricapparatus intensity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106300819B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586519A (en) * | 2017-09-29 | 2019-04-05 | 上海宝钢工业技术服务有限公司 | The fast repairing method of variable-frequency high-voltage motor winding insulation breakage |
| CN110707614A (en) * | 2019-09-19 | 2020-01-17 | 宁波东方电缆股份有限公司 | Method for repairing flexible mineral insulated cable with metal outer sheath |
| CN110912361A (en) * | 2019-12-18 | 2020-03-24 | 国家电网有限公司 | Method for repairing anti-corona layer of generator stator bar |
| CN112688497A (en) * | 2020-12-18 | 2021-04-20 | 江苏中车电机有限公司 | Insulation repairing method for contact part of motor end ring and fixed seat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145714A (en) * | 2007-08-15 | 2008-03-19 | 山东齐鲁电机制造有限公司 | Repair technology for penetrated high-voltage motor stator coil of vacuum pressure soakage |
| CN103401335A (en) * | 2013-07-31 | 2013-11-20 | 东方电气（乐山）新能源设备有限公司 | Doubly-fed wind-driven generator insulation system and manufacturing method thereof |
| CN103401377A (en) * | 2013-07-29 | 2013-11-20 | 哈尔滨电机厂有限责任公司 | Method for manufacturing stator coil insulation structure of tidal current generator |
-
2016
- 2016-08-22 CN CN201610702011.3A patent/CN106300819B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145714A (en) * | 2007-08-15 | 2008-03-19 | 山东齐鲁电机制造有限公司 | Repair technology for penetrated high-voltage motor stator coil of vacuum pressure soakage |
| CN103401377A (en) * | 2013-07-29 | 2013-11-20 | 哈尔滨电机厂有限责任公司 | Method for manufacturing stator coil insulation structure of tidal current generator |
| CN103401335A (en) * | 2013-07-31 | 2013-11-20 | 东方电气（乐山）新能源设备有限公司 | Doubly-fed wind-driven generator insulation system and manufacturing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586519A (en) * | 2017-09-29 | 2019-04-05 | 上海宝钢工业技术服务有限公司 | The fast repairing method of variable-frequency high-voltage motor winding insulation breakage |
| CN110707614A (en) * | 2019-09-19 | 2020-01-17 | 宁波东方电缆股份有限公司 | Method for repairing flexible mineral insulated cable with metal outer sheath |
| CN110707614B (en) * | 2019-09-19 | 2020-11-13 | 宁波东方电缆股份有限公司 | Method for repairing flexible mineral insulated cable with metal outer sheath |
| CN110912361A (en) * | 2019-12-18 | 2020-03-24 | 国家电网有限公司 | Method for repairing anti-corona layer of generator stator bar |
| CN112688497A (en) * | 2020-12-18 | 2021-04-20 | 江苏中车电机有限公司 | Insulation repairing method for contact part of motor end ring and fixed seat |
| WO2022127378A1 (en) * | 2020-12-18 | 2022-06-23 | 江苏中车电机有限公司 | Insulation repair method for contact position between motor end ring and fixing base |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106300819B (en) | 2018-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106300819A (en) | There is the insulation restorative procedure of high electricapparatus intensity | |
| CN1327997C (en) | Device and method for renewing cooling path in turbine wing surface | |
| CN106374690B (en) | Large generator stator bar insulation field repairing method | |
| CN102306988B (en) | Insulation restoration method for generator rotor magnetic pole | |
| CN107718607B (en) | Fan blade tip repairing method | |
| Stone et al. | Impact of slot discharges and vibration sparking on stator winding life in large generators | |
| CN102361270A (en) | Restoration method of cable used by internal combustion engine traction locomotive and electric power traction locomotive | |
| CN106555914A (en) | The large-scale rubber lined pipe renovation technique of nuclear power station | |
| CN105345390B (en) | Point sealing surface repair method in pressure resistant vessel | |
| CN112204862B (en) | Denture assembly for generator stator core | |
| CN104505993B (en) | Cage asynchronous motor restorative procedure | |
| CN104599794B (en) | The method for maintaining of maintenance umbrella and insulator | |
| CN112968577B (en) | Giant hydro-generator stator core fusing repair device and repair method | |
| US2141268A (en) | Commutator and method of making same | |
| US10193407B2 (en) | Method for repairing a rotor | |
| CN206942735U (en) | The dual-purpose paraffin cutting instrument of detection oil pumping club shaft situation | |
| CN109244907B (en) | Ring main unit binding post sleeve repairing method | |
| US10560006B2 (en) | Method to apply an insulation | |
| CN204503683U (en) | A kind of power transmission and transforming equipment cleaning dust absorption device | |
| CN104384640A (en) | Method for removing damaged blade of stator component of aero-engine | |
| CN105245048B (en) | A kind of motor stator groove portion insulation system | |
| CN110912361A (en) | Method for repairing anti-corona layer of generator stator bar | |
| CN202856551U (en) | Generator stator slot wedge maintenance tool with no need for lifting rotor | |
| CN103057134B (en) | A kind of disconnected tire method for repairing and mending | |
| CN203352325U (en) | Million grade multi-glue mould pressing stator bar of water wheel generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |