CN103560620A - Method for reducing temperature rise of half-speed large-current collecting ring device - Google Patents
Method for reducing temperature rise of half-speed large-current collecting ring device Download PDFInfo
- Publication number
- CN103560620A CN103560620A CN201310572077.1A CN201310572077A CN103560620A CN 103560620 A CN103560620 A CN 103560620A CN 201310572077 A CN201310572077 A CN 201310572077A CN 103560620 A CN103560620 A CN 103560620A
- Authority
- CN
- China
- Prior art keywords
- collector ring
- ring
- temperature rise
- centrifugal fan
- diameter
- 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
Images
Abstract
The invention provides a method for reducing the temperature rise of a half-speed large-current collecting ring device. The method for reducing the temperature rise of the half-speed large-current collecting ring device aims to improve the current-carrying capacity of the half-speed collecting ring device. The diameter of the collecting ring device is increased, the number of carbon brushes is increased, the arrangement of the carbon brushes on a collecting ring is optimized, meanwhile, the diameter of a centrifugal fan is increased, a ventilation system of the collecting ring device is optimized, and therefore the surface temperature of a sliding ring is lowered to be within a permitted range of not larger than 80K. The method effectively reduces the temperature rise of the half-speed large-current collecting ring device, and improves the current-carrying capacity of the collecting ring to the 10000A level.
Description
Technical field
The present invention relates to a kind of reduction Half Speed collector ring with high current device temperature rise method, belong to turbo generator technical field.
Background technology
In large turbo-type generator, exciting current access generator has two kinds of modes conventionally, and a kind of is gang brushfree magnetizing machine mode, and another kind is collector machine mode.Static carbon brush in collector ring mode use device on brush holder accesses generator with the coupling of rotation current collection interannular by exciting current.Collector machine is stable compared with simple, axle system with its structure, fast response time and be subject to user's favor.The exciting current needing along with generator increases, and requires the current capacity of collector machine to improve, the temperature rise in collector machine and the cooling technical bottleneck that becomes development.
Mainly by the wind abrasion between carbon brush and slip ring and exciting current, the electrical loss between carbon brush and slip ring forms in loss in collector machine.The heat that collector machine generally produces various losses by centrifugal fan and ventilating system thereof is taken away.
For conventional thermoelectricity two pole generators, general exciting current is below 6000A.Along with the exploitation of large nuclear-power generator techniques, the most quaternary structures that adopt of the above nuclear power generator of million kilowatt, the exciting current of generator increases to 9000A-10000A grade.The rotating speed of four-pole generator is half of two pole generators, because rotating speed reduces by half, centrifugal fan cooling effect greatly reduces thereupon, simultaneously, along with exciting current increases, the electrical loss of collector ring also increases thereupon, thereby the slip ring surface temperature rise of collector machine is improved, carbon brush and the slip ring surface working condition bottleneck that will more become.For this reason, in the urgent need to seeking a kind of method that reduces the temperature rise of Half Speed collector ring with high current device.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of reduction Half Speed collector ring with high current device temperature rise method, makes within slip ring surface temperature rise is reduced to tolerance band, to guarantee the normal operation of Half Speed collector ring with high current device.
In order to solve the problems of the technologies described above, technical scheme of the present invention has been to provide a kind of method that reduces the temperature rise of Half Speed collector ring with high current device, it is characterized in that: step is:
Preferably, the diameter of described collector ring increases to 450mm.
Preferably, the diameter of described centrifugal fan increases to 1200mm.
Preferably, the gap of described centrifugal fan external diameter and described air-ducting ring is decreased to 2.5mm.
The present invention is by increasing collector ring diameter, increase carbon brush quantity, optimize the layout of carbon brush on collector ring, increase centrifugal fan diameter simultaneously, and optimize collector machine ventilating system, make slip ring surface temperature rise be reduced to tolerance band≤80K, through evidence, the present invention provides a kind of effective method for Half Speed collector ring with high current device reduces temperature rise, makes the current capacity of Half Speed collector ring bring up to 10000A grade.
Accompanying drawing explanation
Fig. 1 is a kind of Half Speed collector ring with high current apparatus structure schematic diagram in the embodiment of the present invention;
Fig. 2 is current collection annulate shaft and brush rocker structure schematic diagram in the present embodiment;
Fig. 3 is brush carrier circumferential arrangement and deep bead schematic diagram in the present embodiment, in figure:
1-collector ring outer cover; 2-current collection annulate shaft; 3-hydraulic pressure sliding bearing; 4-composite type brush carrier; 5-conductive plate; 6-air-ducting ring; 7-centrifugal fan; 8-slip ring; 9-carbon brush; 10-deep bead.
Embodiment
For the present invention is become apparent, hereby with preferred embodiment, the present invention will be further described.
In conjunction with Fig. 1 to Fig. 3, the invention provides a kind of reduction Half Speed collector ring with high current device temperature rise method, the steps include:
The diameter of step 1, increase collector ring 2 is to 450mm, and carbon brush 9 quantity are increased to 360, optimizes the layout of carbon brush 9 on collector ring 2, reduces the current density of each carbon brush, prevents the local overheating of carbon brush.Be assemblied in each slip ring 8 axial arrangement 3 row, circumferential 10 the composite type brush carriers 4 of every row on collector ring 2,6 carbon brush 9 of each composite type brush carrier 4 assembling.
The diameter of step 2, the centrifugal fan 7 of increase between a pair of slip ring 8 is to 1200mm, make up the fan loss in head that declines and cause because of rotating speed, force in the unit interval and have the cooling collector ring of more cold air air, reduce the temperature rise of Half Speed collector ring with high current device.Change the material of centrifugal fan 7, adopt high-strength alloy Steel material, make fan can bear the STRESS VARIATION that increases corresponding increase because of external diameter; Collector ring outer cover 1 on whole device outer cover, thus form airtight circulating ventilation system.
The present invention is through evidence, and collector ring 2 surface temperature rises are reduced to tolerance band≤80K, for Half Speed collector ring with high current device reduces temperature rise, provides a kind of effective method, makes the current capacity of Half Speed collector ring bring up to 10000A grade.
Claims (4)
1. a method that reduces the temperature rise of Half Speed collector ring with high current device, is characterized in that: step is:
Step 1, the diameter of collector ring (2) is increased to 430-470mm, be assemblied in circumferentially at least 10 composite type brush carriers (4) of axial arrangement at least 3 rows of each slip ring (8) on collector ring (2), every row, each composite type brush carrier (4) assembling at least 6 carbon brush (9);
Step 2, the diameter that is positioned at the centrifugal fan (7) between a pair of slip ring (8) is increased to 1100-1300mm, centrifugal fan (7) adopts high-strength alloy Steel material; Collector ring outer cover (1) on whole Half Speed collector ring with high current device outer cover, thereby the circulating ventilation system of its complete;
Step 3, reduce the gap of centrifugal fan (7) external diameter and air-ducting ring (6), thereby Jiang Feng district intercepts into high-pressure blast district and low-pressure air district;
Step 4, the axial mounting block aerofoil in large space (10) of arranging at composite type brush carrier (4), force cooling-air to concentrate heating place of cooling slip ring (8) and carbon brush (9), improves cooling effect.
2. a kind of method that reduces the temperature rise of Half Speed collector ring with high current device as claimed in claim 1, is characterized in that: the diameter of described collector ring (2) increases to 450mm.
3. a kind of method that reduces the temperature rise of Half Speed collector ring with high current device as claimed in claim 1, is characterized in that: the diameter of described centrifugal fan (7) increases to 1200mm.
4. a kind of method that reduces the temperature rise of Half Speed collector ring with high current device as claimed in claim 1, is characterized in that: the gap of described centrifugal fan (7) external diameter and described air-ducting ring (6) is decreased to 2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310572077.1A CN103560620B (en) | 2013-11-15 | 2013-11-15 | A kind of method reducing the temperature rise of Half Speed collector ring with high current device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310572077.1A CN103560620B (en) | 2013-11-15 | 2013-11-15 | A kind of method reducing the temperature rise of Half Speed collector ring with high current device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103560620A true CN103560620A (en) | 2014-02-05 |
| CN103560620B CN103560620B (en) | 2015-08-26 |
Family
ID=50014811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310572077.1A Active CN103560620B (en) | 2013-11-15 | 2013-11-15 | A kind of method reducing the temperature rise of Half Speed collector ring with high current device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103560620B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH567826A5 (en) * | 1973-02-12 | 1975-10-15 | Hitachi Ltd | |
| US4137474A (en) * | 1974-06-04 | 1979-01-30 | Kraftwerk Union Aktiengesellschaft | Gas-cooled slip ring for electrical machines |
| JPS58108947A (en) * | 1981-12-23 | 1983-06-29 | Fuji Electric Co Ltd | Current collecting ring unit for rotary electric machine |
| JPS58192454A (en) * | 1982-04-30 | 1983-11-09 | Hitachi Ltd | Cooler for brush of rotary electric machine |
| CN1606215A (en) * | 2003-10-10 | 2005-04-13 | 株式会社日立制作所 | Cooling device of current collector |
| CN201594781U (en) * | 2009-08-24 | 2010-09-29 | 山西防爆电机（集团）有限公司 | Heat dissipation and carbon powder prevention device of motor collecting ring component |
-
2013
- 2013-11-15 CN CN201310572077.1A patent/CN103560620B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH567826A5 (en) * | 1973-02-12 | 1975-10-15 | Hitachi Ltd | |
| US4137474A (en) * | 1974-06-04 | 1979-01-30 | Kraftwerk Union Aktiengesellschaft | Gas-cooled slip ring for electrical machines |
| JPS58108947A (en) * | 1981-12-23 | 1983-06-29 | Fuji Electric Co Ltd | Current collecting ring unit for rotary electric machine |
| JPS58192454A (en) * | 1982-04-30 | 1983-11-09 | Hitachi Ltd | Cooler for brush of rotary electric machine |
| CN1606215A (en) * | 2003-10-10 | 2005-04-13 | 株式会社日立制作所 | Cooling device of current collector |
| CN201594781U (en) * | 2009-08-24 | 2010-09-29 | 山西防爆电机（集团）有限公司 | Heat dissipation and carbon powder prevention device of motor collecting ring component |
Non-Patent Citations (1)
| Title |
|---|
| 张德学: "《大电流集电环的研究》", 《大电机技术》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103560620B (en) | 2015-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104065186B (en) | It is a kind of for the stator of motor, motor and its ventilating and cooling method | |
| CN104505970A (en) | Three-phase asynchronous motor with three-fan full-circulation cooling wind path system | |
| CN104638788A (en) | Rotor sheath of high-speed permanent magnet motor | |
| CN103701238A (en) | Self-circulating heat dissipating device of 5MW doubly-fed air-cooled and water-cooled wind generator | |
| CN201682373U (en) | High-speed permanent magnet motor stator temperature-leveling cooling system | |
| CN103560620B (en) | A kind of method reducing the temperature rise of Half Speed collector ring with high current device | |
| CN202405902U (en) | Rotor end part structure for driving motor of main helium fan | |
| CN204906108U (en) | Interior outer cooling type generator | |
| CN103532309B (en) | Intelligent hot superconducting motor cooler | |
| CN113162281B (en) | External rotor electric machine with cooling structure | |
| CN102223014B (en) | Flywheel energy storage device capable of cooling rotors | |
| CN204258480U (en) | High speed permanent magnet motor rotor | |
| CN103956883A (en) | Rotary cooling system of wind driven generator and wind driven generator with same | |
| CN201341067Y (en) | Air-cooled 350MW steam turbine generator | |
| CN107482829A (en) | A kind of radiator structure of brushless electric machine | |
| CN203707911U (en) | Surface plug-in type high speed permanent magnet motor rotor | |
| CN205092673U (en) | Main helium fan drive electric motor rotor structure | |
| CN105281454A (en) | Primary helium circulator driving motor rotor structure | |
| CN111934491A (en) | Self-excitation conductive motor | |
| CN214367342U (en) | Bearing cooling structure of high-power permanent magnet speed regulator | |
| CN204900327U (en) | Be applied to cooling fan structure of generator | |
| CN110247489A (en) | A kind of high-speed permanent magnetic synchronous motor with stator major insulation water channel cooling system | |
| CN204145199U (en) | A kind of end cap of double-fed wind power generator and slip-ring seat fit structure | |
| CN106329826A (en) | Inside and outside cooled generator | |
| CN212412982U (en) | Self-excitation conductive motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |