CN204216737U - A kind of collector ring of generator cooling air duct system - Google Patents
A kind of collector ring of generator cooling air duct system Download PDFInfo
- Publication number
- CN204216737U CN204216737U CN201420629446.6U CN201420629446U CN204216737U CN 204216737 U CN204216737 U CN 204216737U CN 201420629446 U CN201420629446 U CN 201420629446U CN 204216737 U CN204216737 U CN 204216737U
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- collector ring
- air inlet
- blimp
- air
- filter
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Abstract
The utility model discloses a kind of collector ring of generator cooling air duct system belonging to generator cooling system technical field.Air inlet is arranged at the top of blimp, i.e. upper air inlet mode, and the both sides of air inlet are provided with filter, have collector ring in blimp, and collector ring is connected with carbon brush, and air outlet pipeline is arranged at bottom the excitation platen of blimp, is connected with external dedicated air channel.Generator blimp exhaust passage is designed bottom running layer by the utility model cooling system, namely air-out mode is descended, air inlet is arranged on above blimp, i.e. upper air inlet mode, air intake road and go out wind path and have obvious air channel separately, be not easy mixed wind, obvious to collector ring cooling effect, cooler air intake filter screen does drawing and pulling type, and clear up filter screen during equipment is run and facilitate easy to operate, air inlet is arranged on above blimp, i.e. upper air inlet mode, air inlet arranges filter, avoids foreign matter to enter, and conveniently selects a good opportunity to clear up the position easily accumulated dust and filter.
Description
Technical field
The utility model belongs to generator cooling system technical field, is specifically related to a kind of collector ring of generator cooling air duct system.
Background technology
Current 600MW level generating set, adopt the water hydrogen hydrogen type of cooling, generator is made up of parts such as stator, rotor, end cap and bearing, oil sealing device, cooler and outer cover, outlet box, lead-out wire and insulator terminal, collector ring and the assembling of blimp brush holder, internal monitoring systems, and generator adopts the type of cooling of integral full-closed, internal hydrogen circulation, stator winding internal water cooling, stator core and end construction part hydrogen surface cool, rotor windings gap-pickup hydrogen inner cooling.
Collector ring of generator cooling system is under the effect utilizing the fan that the little axle of excitation carries, and by covering on the outer blimp of brush holder, forming wind path, cooling collector ring.It is female as air intake passage that field erected collector ring system utilizes excitation to seal, and has special exhaust passage to cause to cover on the little indoor of brush holder.Air inlet is opened on the excitation envelope mother on machine room 6.9 meters of platforms, below generator foundation beam.Totally 2 air inlets, each about 40*40cm, has only installed one deck stainless steel filtering net.Brush holder cell claims blimp, and suppressed forming by glass-reinforced plastic material, be case structure, inner-wall spraying sound-absorbing and fire proofing, cover on outside brush holder, intercepts noise, forms wind path, and prevent dust from entering in cover.Cooling air enters excitation envelope mother to collector ring indoor from 6.9m air inlet, and under the effect of the cooling fan of collector ring indoor, the cooling air channel on collector ring, drains into air outlet, causes outdoor by exhaust passage.Collector ring wind path air intake adopts lower air inlet mode, is in same layer and apart from lower, causes the short circuit of part wind path with air outlet, this running layer has more thermal source, inlet temperature is higher, in addition exciting current comparatively large (about 4000A), cause collector ring and brush carrier temperature higher.Too high temperature can cause carbon brush swell increment to increase, and adds carbon brush and is stuck in possibility in brush carrier; Too high temperature can change carbon brush characteristic, and the resistance of carbon brush itself and contact resistance can become large, and heating is serious, causes vicious circle; Too high temperature can cause collector ring surface discolouration, and the electric conductivity of collector ring is declined; The reasons in structure of current collection ring casing air inlet, filter structure is only one deck stainless steel filtering net.This kind of structure is undesirable to air intake contaminant filter effect, causes collector ring indoor sanitation poor, on carbon brush, collector ring and brush holder dust and granule foreign more.On the one hand impurity may inlay card on the contact-making surface of carbon brush with collector ring, cause collector ring surface injured, carbon brush sparking, severe patient can cause collector ring ring fire, device damage; The insulation position of brush holder insulation board, collector ring and macro-axis gathers more dust on the other hand, if there is moist or greasy dirt phenomenon, can cause the one point earth of rotor, unit tripping.Current collection ring casing make use of excitation and seals female shell as air intake passage, and excitation busbar and insulating support are among wind path for a long time, has gathered more dust and impurity, the phenomenon that busbar discharges over the ground along insulation board may occur, cause rotor one point to ground fault.Due to excitation, to seal female shell sizes less, and have busbar, insulating support in shell, and cooling air passway space is less, deficiency in draught, to collector ring and brush carrier cooling effect bad.Air intake strainer filtering effect is bad, makes generator brush holder and the long-pending full dust of brush carrier.
As because of excitation bus insulation low generation rotor ground fault fault, unit can be stopped transport, and loss electricity, also has the examination of start and stop and electrical network; As collector ring fault, unit can be stopped transport, and repairs collector ring expense and obtains 150,000 yuan, have the electricity of 5 days at least; The fault of collector ring, may occur the earth fault that excitation bus is subject to contamination by dust and brings occurring non-stopping, can be brought the economic loss of device damage and loss electricity by forced-stopping machine.
Utility model content
The utility model, for the defect of prior art, proposes a kind of collector ring of generator cooling air duct system.
A kind of collector ring of generator cooling air duct system, air inlet 1 is arranged at the top of blimp 2, and the both sides of air inlet 1 are provided with filter 3, collector ring 7 is had in blimp 2, collector ring 7 is connected with brush holder 6 by carbon brush, and induced duct 5 is arranged at the bottom of blimp 2, is connected with the wind path of collector ring 7 process.
Described brush box 4 is arranged on brush holder 6.
Described filter 3 is drawing and pulling type cooler air intake filter screen.
The beneficial effects of the utility model: motor sound insulation shield exhaust passage is designed bottom running layer by the utility model, namely air-out mode is descended, air inlet is arranged on above blimp, i.e. upper air inlet mode, air intake and go out wind path and have obvious air channel separately, be not easy mixed wind, obvious to collector ring cooling effect, cooler air intake filter screen does drawing and pulling type, clearing up filter screen during equipment is run facilitates easy to operate, air inlet is arranged on above blimp, air inlet arranges filter, foreign matter is avoided to enter, pollute collector ring in blimp, the parts such as carbon brush, and conveniently select a good opportunity the position easily accumulated dust and filter cleared up.
Accompanying drawing explanation
Fig. 1 is the utility model collector ring of generator cooling air duct system configuration schematic diagram;
In figure, 1-air inlet, 2-blimp, 3-filter, 4-brush box, 5-induced duct, 6-brush holder, 7-collector ring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Embodiment 1
A kind of collector ring of generator cooling air duct system, as shown in Figure 1, air inlet 1 is arranged at the top of blimp 2, the both sides of air inlet 1 are provided with filter 3, have collector ring 7 in blimp 2, brush box 4 is connected with brush holder 6, and induced duct 5 is arranged at the bottom of blimp 2 and is connected with the wind path of brush holder 6 process.
Described brush box 4 is arranged on collector ring 7 by carbon brush.Described filter 3 is drawing and pulling type cooler air intake filter screen.
The collector ring of generator cooling air duct system of the present embodiment changes it and gets air cooling mode, evade the problems such as unborn cooling air quantity is little, inlet temperature is high, pollution excitation system element, avoid thus may causing occurring equipment fault, and the huge economic loss brought, reduce plant maintenance amount, improve the advantages such as fail safe.
Change among a small circle the outdoor cover of existing collector ring, new cooler air intake passage customized and filter screen, be arranged on existing outer cover, namely changes the upper air inlet mode that wind is got on top into, and will close former air inlet, and concrete improvement is as follows:
1. blimp brush holder aeration structure is changed to " upper entering and lower leaving " by former design " under enter under go out ".
2. air inlet is arranged on above blimp, and air inlet arranges filter, avoids foreign matter to enter, and pollutes the parts such as collector ring, carbon brush in blimp, and conveniently selects a good opportunity and to clear up the position easily accumulated dust and filter.
3. air outlet is established on machine room 6.9 meters of platforms, uses intrinsic air channel.
Use " upper entering and lower leaving " design concept, air intake and go out wind path and have obvious air channel separately, is not easy mixed wind, obvious to collector ring cooling effect; Exhaust passage original in utilization, invest minimum, construction volume is minimum, and onsite application is more.
The utility model Optimal improvements filter at air inlet strainability.Avoid foreign matter to enter, to pollute in blimp in collector ring, brush and air inlet duct the parts such as excitation busbar, can select a good opportunity and the position easily accumulated dust and filter cleared up.To the improvement of air inlet mode in blimp, namely increase air inlet at blimp top, changing lower air intake is upper air inlet mode, thoroughly solves the problems such as the high and deficiency in draught of inlet temperature.Greatly improve the relatively high problem of collector ring temperature, improve ventilating and cooling effect.In normal scheduled maintenance period, owing to improving the service conditions of collector ring, prevent the earth fault that may occur that excitation bus is subject to contamination by dust and brings, the economic loss of the device damage avoiding stopping accident to bring and loss electricity.The actual current collection ring casing cooling air inlet temperature that detects reduces about 5 DEG C, strengthen the filter effect of air intake filter screen, increase cooling air quantity, leaving air temp have dropped about 5 DEG C, thus greatly reduce collector ring operating temperature, improve the running environment of collector ring and carbon brush greatly, ensure engine health stable operation.
Claims (3)
1. a collector ring of generator cooling air duct system, it is characterized in that, air inlet (1) is arranged at the top of blimp (2), the both sides of air inlet (1) are provided with filter (3), excitation brush box (4) is had in blimp (2), brush box (4) is connected with brush holder (6), and induced duct (5) is arranged at the bottom of blimp (2) and is connected with the wind path of collector ring (7) process.
2. a kind of collector ring of generator cooling air duct system according to claim 1, it is characterized in that, described brush box (4) is arranged on collector ring (7) by carbon brush.
3. a kind of collector ring of generator cooling air duct system according to claim 1, it is characterized in that, described filter (3) is drawing and pulling type cooler air intake filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629446.6U CN204216737U (en) | 2014-10-29 | 2014-10-29 | A kind of collector ring of generator cooling air duct system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420629446.6U CN204216737U (en) | 2014-10-29 | 2014-10-29 | A kind of collector ring of generator cooling air duct system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216737U true CN204216737U (en) | 2015-03-18 |
Family
ID=52985370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420629446.6U Expired - Fee Related CN204216737U (en) | 2014-10-29 | 2014-10-29 | A kind of collector ring of generator cooling air duct system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216737U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017739A (en) * | 2016-07-28 | 2016-10-12 | 无锡信大气象传感网科技有限公司 | Temperature sensor calibration device |
| CN106130243A (en) * | 2016-08-26 | 2016-11-16 | 中车株洲电机有限公司 | A kind of maintaining cover, slip-ring seat cylinder and slip-ring seat |
| CN106225954A (en) * | 2016-07-28 | 2016-12-14 | 无锡信大气象传感网科技有限公司 | There is the calibrating device for temperature sensor of electromagnetic induction roller heating |
| CN106248253A (en) * | 2016-07-28 | 2016-12-21 | 无锡信大气象传感网科技有限公司 | The temperature sensor calibrator (-ter) unit of uniform temperature fields |
| CN107181343A (en) * | 2016-03-10 | 2017-09-19 | 通用电气公司 | Ring assembly for motor |
| CN113472141A (en) * | 2021-07-30 | 2021-10-01 | 宝武集团鄂城钢铁有限公司 | Sintering waste heat power generation exciter and method for preventing oil contamination infection |
-
2014
- 2014-10-29 CN CN201420629446.6U patent/CN204216737U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107181343A (en) * | 2016-03-10 | 2017-09-19 | 通用电气公司 | Ring assembly for motor |
| CN106017739A (en) * | 2016-07-28 | 2016-10-12 | 无锡信大气象传感网科技有限公司 | Temperature sensor calibration device |
| CN106225954A (en) * | 2016-07-28 | 2016-12-14 | 无锡信大气象传感网科技有限公司 | There is the calibrating device for temperature sensor of electromagnetic induction roller heating |
| CN106248253A (en) * | 2016-07-28 | 2016-12-21 | 无锡信大气象传感网科技有限公司 | The temperature sensor calibrator (-ter) unit of uniform temperature fields |
| CN106130243A (en) * | 2016-08-26 | 2016-11-16 | 中车株洲电机有限公司 | A kind of maintaining cover, slip-ring seat cylinder and slip-ring seat |
| CN113472141A (en) * | 2021-07-30 | 2021-10-01 | 宝武集团鄂城钢铁有限公司 | Sintering waste heat power generation exciter and method for preventing oil contamination infection |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20161029 |