CN103486425A - Closed circulation system for sealing and collecting oil fog of generator - Google Patents
Closed circulation system for sealing and collecting oil fog of generator Download PDFInfo
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- CN103486425A CN103486425A CN201310486202.7A CN201310486202A CN103486425A CN 103486425 A CN103486425 A CN 103486425A CN 201310486202 A CN201310486202 A CN 201310486202A CN 103486425 A CN103486425 A CN 103486425A
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- oil
- oil mist
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- sealing cover
- generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a closed circulation system for sealing and collecting oil fog of a generator. The closed circulation system comprises a rotatable part of a generator thrust bearing or a guide bearing and an oil groove for surrounding the rotatable part, wherein the upper part of the oil groove is provided with a sealing cover, and a sealing structure arranged between the sealing cover and the rotatable part is used for isolating the oil groove and the outside; the sealing cover is respectively provided with an air inlet, an exhaust hole and an oil return hole communicated with the oil groove, the rotatable part of the generator is provided with a fan, and the sealing cover or an oil groove cover is provided with an oil fog collector; the oil fog collector is communicated with the exhaust hole through an oil-taking fog pipe, the outlet of the oil fog collector is communicated with the air inlet, and an oil liquid agglutinated by the oil fog collector is inputted into the oil return hole through an oil return pipe. The closed circulation system provided by the invention has the advantages that the oil fog is limited in a space formed by the oil groove, the oil fog collector and the oil-taking fog pipe, the oil fog is agglutinated by the oil fog collector into a liquid state to reflow in the oil groove, so that the sealing and collection of the oil fog are realized, and an overflowing problem of the oil fog is solved.
Description
Technical field
The present invention relates to oil mist sealing and the collecting system technical field of generator.
Background technique
Dynamo bearing generally adopts sliding bearing, and bearing liner infiltrates in lubricant oil.When unit rotates, lubricant oil stirs, clashes in oil groove on the one hand, produces a large amount of steam bubbles, and the steam bubble explosion forms mist of oil, and the local place of tiling oil film temperature is higher on the other hand, and the lubricant oil vaporization, form mist of oil.Therefore, the generation of mist of oil is inevitably, and along with the increasing of generating unit speed, or the increasing of unit tiling place rotatable parts linear velocity, and the mist of oil order of severity increases.In unit running process, mist of oil constantly accumulates, and in oil groove, oil mist concentration and gas pressure raise, and mist of oil can overflow from sealing configuration.The mist of oil overflowed, to generator and environment, in very serious situation, may cause the series of problems such as decreasing insulating, and the generator reliability is reduced.
Under the prior art condition, the mist of oil processing method of generally using is utilize oil mist collector by mist of oil sucking-off in oil groove and be aggregated into fluid, as publication number is CN202220708U, the Chinese patent literature that open day is on May 16th, 2012 discloses a kind of oil mist collector, relates in particular to a kind of oil mist collector for oil tank of water turbine generator.Comprise oil-storing barrel, the upper end in described oil-storing barrel is provided with the mist of oil condensation module, and the top of described oil-storing barrel is provided with the mist of oil collecting pipe, and described mist of oil collecting pipe is plugged in the mist of oil condensation module, and the bottom of described oil-storing barrel is provided with drain line.This invention is simple in structure, easy to operate for the oil mist collector of oil tank of water turbine generator, reducing polluted emission.
But still there is following defect in the prior art that the above-mentioned patent documentation of take is representative:
Due to oil mist collector principle and structural shortcoming, type selecting is unreasonable or safeguard the reasons such as incorrect, the effect of oil mist collector is had a greatly reduced quality, still there is a certain amount of mist of oil in its tail gas, the very large unit for the mist of oil amount, even occur that naked eyes can be observed the situation that also has a large amount of mist of oils in oil mist collector tail gas.Therefore, be necessary oil mist sealing structure and gathering-device are improved.
Summary of the invention
The present invention is intended to for the existing defect of above-mentioned prior art and deficiency, the closed-cycle system of a kind of generator oil mist sealing and collection is provided, the present invention can be limited in mist of oil in the space of oil groove, oil mist collector and area from absorbing smoke outwards pipe formation, make mist of oil be aggregated into liquid state by oil mist collector and be back to oil groove, realize sealing and the collection of mist of oil, thereby solve the problem that mist of oil overflows.
The present invention is by adopting following technical proposals to realize:
The closed-cycle system of a kind of generator oil mist sealing and collection, the rotatable parts that comprise generator thrust bearing or guide bearing, surround the oil groove of rotatable parts, oil groove top is provided with sealing cover, the sealing configuration arranged between sealing cover and rotatable parts is isolated from the outside described oil groove, it is characterized in that: have the inlet hole be communicated with oil groove on described sealing cover, exhaust port and spill port, on described rotatable parts, be provided with for air-flow is directed into to the fan of exhaust port from inlet hole, fan is between rotatable parts and sealing cover, be provided with oil mist collector on the lid of sealing cover or oil groove, oil mist collector is communicated with described exhaust port by the area from absorbing smoke outwards pipe, the outlet of oil mist collector is communicated with described inlet hole, fluid by the oil mist collector aggegation inputs in described spill port through return tube.
Described sealing cover be middle part with the lid shape raised up, the sealing cover inwall raised up forms an annular chamber around described rotatable parts, described inlet hole is opened on the sealing cover inwall raised up.
Fluid by the oil mist collector aggegation is stored in oil sump tank, and oil sump tank is communicated with spill port by return tube, and fluid is inputed in oil groove.
On described return tube, one-way valve is installed.
Described return tube be shaped as serpentine.
The outlet of described oil mist collector is communicated with described inlet hole through exhaust emission tube.
Described fan is axial flow fan, and axial flow fan is arranged in described annular chamber.
Described fan is centrifugal fan or mixed flow fan.
The number of described inlet hole, exhaust port, spill port and oil mist collector is one or more.
Compared with prior art, the beneficial effect that the present invention reaches is as follows:
1, in the present invention, adopt and " have the inlet hole be communicated with oil groove in capping, exhaust port and spill port, externally be equipped with oil mist collector, oil mist collector is communicated with described exhaust port by the area from absorbing smoke outwards pipe, the outlet of oil mist collector is communicated with described inlet hole, fluid by the oil mist collector aggegation inputs in described spill port through return tube, be provided for air-flow is directed into from inlet hole the fan of exhaust port on rotatable parts " such mode of structure, make mist of oil enter oil mist collector through the area from absorbing smoke outwards pipe under the pressure of fan and be aggregated into fluid, the tail gas of oil mist collector is drawn back oil groove through pipe and fan, so, gas forms sealing and circulating, constantly mist of oil being sent into to oil mist collector from oil groove is aggregated into fluid and is back to oil groove, and the suction force due to fan, gas can not overflow from sealing cover and rotatable parts sealing, the present invention can be limited in mist of oil in the space of oil groove, oil mist collector and area from absorbing smoke outwards pipe formation, make mist of oil be aggregated into liquid state by oil mist collector and be back to oil groove, realize sealing and the collection of mist of oil, can stop due to the solidifying mist of oil problem that the complete aggegation of mist of oil can not be caused of oil mist collector, simultaneously, also can reduce even to stop mist of oil overflows from the sealing configuration between sealing cover and rotatable parts, thereby, can prevent contaminated with oil mist generator and surrounding environment, can give security for the generator reliable operation.
2, in the present invention, axial flow fan is installed in the annular chamber that the sealing cover inwall that raises up forms around described generator rotatable parts, be convenient to reduce and adjust the gap of fan and annular chamber sidewall, the pressure that can better keep the fan rotation to produce, prevent that described gap from causing the fan pressure release, thereby can guarantee that closed-cycle system well moves.
3, in the present invention, fluid by the oil mist collector aggegation is stored in oil sump tank, oil sump tank is communicated with spill port by return tube, fluid is inputed in oil groove, adopt the form of oil sump tank that the fluid of aggegation can be stored in oil sump tank, when fluid be accumulated to a certain amount of after by return tube in spill port inputs to oil groove.
4, in the present invention, install one-way valve additional or do pipe in "S" shape on return tube, can make fluid be back in oil groove, can prevent that again mist of oil from entering into oil mist collector by return tube.
The accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments the present invention is described in further detail wherein:
Fig. 1 is embodiment's 1 structural representation;
Fig. 2 is embodiment's 2 structural representations.
Mark in figure: 1, rotatable parts, 2, oil groove, 3, sealing cover, 31, annular chamber, 32, inlet hole, 33, exhaust port, 34, spill port, 4, the area from absorbing smoke outwards pipe, 5, oil mist collector, 51, oil sump tank, 6, exhaust emission tube, 7, fan, 8, return tube, the arrow indication is gas flow direction.
Embodiment
Embodiment 1
As preferred forms of the present invention, with reference to Figure of description 2, on oil groove 2 tops, sealing cover 3 is set, sealing cover 3 tops arrange annular chamber 31, annular chamber 31 inner headed faces arrange 1 or several inlet holes 32, 1 or several exhaust ports 33 and spill port 34 are set on the sealing cover plane, exhaust port 33 is connected with oil mist collector 5 by area from absorbing smoke outwards pipe 4, oil mist collector 5 directly is placed on sealing cover or oil groove covers, the oil mist collector outlet is connected with sealing cover inlet hole 32 through exhaust emission tube 6, the fluid of oil mist collector aggegation is stored in oil sump tank 51, oil sump tank 51 is connected with spill port 34 through return tube 8, one-way valve is installed on return tube, on the rotatable parts 1 that contact with sealing cover, fan 7 is set.Fan 7 reaches following effect: in oil groove, mist of oil is under fan pressure and oil mist collector suction, enter oil mist collector by the area from absorbing smoke outwards pipe, the inlet hole of the tail gas of oil mist collector on sealing cover is back to the sealing cover annular chamber, in fan blows back oil groove, so, gas forms sealing and circulating, ceaselessly the mist of oil in oil groove is delivered in oil mist collector and is aggregated into fluid.Oil mist collector aggegation gained fluid directly is back to oil groove by return tube 8 and spill port 34.
Described fan 7 can be centrifugal fan, axial flow or mixed flow fan, structure depending on sealing cover 3, rotatable parts 1 and oil groove 2, select to adopt axial flow fan in this example, fan structure is also relevant with the pressure of the required generation of fan, the pressure of the required generation of fan is through calculative determination, its effect need to meet: the tail gas of oil mist collector 5 can be drawn back to oil groove, but air that can not sealing cover is outer sucks oil groove in a large number.
The visual concrete structure of sealing cover form is selected various types of sealing configurations, and its effect need to meet: be used in conjunction with and can send oil mist collector tail gas back to oil groove with fan 7, but not in a large number suction seal cover outside air.
Oil mist collector need to meet: mist of oil partly or entirely can be aggregated into to fluid.Fluid in oil sump tank 61 is accumulated to a certain amount ofly directly gets back to oil groove by return tube 8 and hole 45.For realizing this process, can install one-way valve additional or will manage 8 and do pipe in "S" shape on return tube 8 pipes, its effect need to meet: make fluid can be back to oil groove, and mist of oil can not enter oil mist collecting device by return tube 8.
The present invention utilizes sealing cover, is installed on fan, oil mist collector and pipeline on the rotatable parts that contact with sealing cover, make mist of oil enter oil mist collector through the area from absorbing smoke outwards pipeline under the pressure of fan and be aggregated into fluid, the tail gas of oil mist collector reaches by the road fan and is drawn back oil groove, so, gas forms sealing and circulating, constantly mist of oil being sent into to oil mist collector from oil groove is aggregated into fluid and is back to oil groove, and, due to the suction force of fan, gas can not overflow from sealing cover and rotatable parts sealing.The present invention can be limited in mist of oil in the space of oil groove, oil mist collector and area from absorbing smoke outwards pipeline formation, makes mist of oil be aggregated into liquid state by oil mist collector and is back to oil groove, realizes sealing and the collection of mist of oil, thereby solves the problem that mist of oil overflows.
As another better embodiment of the present invention, with reference to Fig. 1, it comprises the rotatable parts of generator thrust bearing or guide bearing, surround the oil groove of rotatable parts, oil groove top is provided with sealing cover, the sealing configuration arranged between sealing cover and rotatable parts is isolated from the outside described oil groove, sealing configuration can be contact type sealing structure, the slit seal structure, sealed type sealing configuration or comb-shaped sealing configuration, have the inlet hole be communicated with oil groove on described sealing cover, exhaust port and spill port, on described rotatable parts, be provided with for air-flow is directed into to the fan of exhaust port from inlet hole, fan is between rotatable parts and sealing cover, be provided with oil mist collector on the lid of sealing cover or oil groove, oil mist collector is communicated with described exhaust port by the area from absorbing smoke outwards pipe, the outlet of oil mist collector is communicated with described inlet hole, fluid by the oil mist collector aggegation inputs in described spill port through return tube.Return tube be shaped as serpentine.Fan is centrifugal fan or mixed flow fan.The number of inlet hole, exhaust port, spill port and oil mist collector is 2.
Claims (8)
1. the closed-cycle system of a generator oil mist sealing and collection, the rotatable parts (1) that comprise generator thrust bearing or guide bearing, surround the oil groove (2) of described rotatable parts, oil groove (2) top is provided with sealing cover (3), the sealing configuration arranged between sealing cover (3) and rotatable parts (1) is isolated from the outside described oil groove (2), it is characterized in that: have the inlet hole (32) be communicated with oil groove (2) on described sealing cover (3), exhaust port (33) and spill port (34), on described rotatable parts (1), be provided with for air-flow is directed into to the fan (7) of exhaust port (33) from inlet hole (32), fan (7) is positioned between rotatable parts (1) and sealing cover (3), be provided with oil mist collector (5) on the lid of sealing cover (3) or oil groove (2), oil mist collector (5) is communicated with described exhaust port (33) by area from absorbing smoke outwards pipe (4), the outlet of oil mist collector (5) is communicated with described inlet hole (32), fluid by oil mist collector (5) aggegation inputs in described spill port (34) through return tube (8).
2. the closed-cycle system of generator oil mist sealing according to claim 1 and collection, it is characterized in that: described sealing cover (3) is that middle part is with the lid shape raised up, the sealing cover raised up (3) inwall forms an annular chamber (31) around described rotatable parts (1), and described inlet hole (32) is opened on the sealing cover raised up (3) inwall.
3. the closed-cycle system of generator oil mist sealing according to claim 1 and 2 and collection, it is characterized in that: described return tube is equipped with one-way valve on (8).
4. the closed-cycle system of generator oil mist sealing according to claim 1 and 2 and collection is characterized in that: described return tube (8) be shaped as serpentine.
5. the closed-cycle system of generator oil mist sealing according to claim 1 and 2 and collection, it is characterized in that: the outlet of described oil mist collector (5) is communicated with described inlet hole (32) through exhaust emission tube (6).
6. the closed-cycle system of generator oil mist sealing according to claim 2 and collection, it is characterized in that: described fan (7) is axial flow fan (7), and axial flow fan (7) is arranged in described annular chamber (31).
7. the closed-cycle system of generator oil mist sealing according to claim 1 and collection, it is characterized in that: described fan (7) is centrifugal fan (7) or mixed flow fan (7).
8. the closed-cycle system of generator oil mist sealing according to claim 1 and collection, it is characterized in that: the number of described inlet hole (32), exhaust port (33), spill port (34) and oil mist collector (5) is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310486202.7A CN103486425A (en) | 2013-10-17 | 2013-10-17 | Closed circulation system for sealing and collecting oil fog of generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310486202.7A CN103486425A (en) | 2013-10-17 | 2013-10-17 | Closed circulation system for sealing and collecting oil fog of generator |
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| CN103486425A true CN103486425A (en) | 2014-01-01 |
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| CN201310486202.7A Pending CN103486425A (en) | 2013-10-17 | 2013-10-17 | Closed circulation system for sealing and collecting oil fog of generator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838588A (en) * | 2016-12-19 | 2017-06-13 | 四川白合轴承技术有限公司 | A kind of leading-type oil mist sealing method |
| CN108757272A (en) * | 2018-06-04 | 2018-11-06 | 中国长江电力股份有限公司 | A kind of turbine-generator units thrust bearing air-tight structure and method |
| CN111765247A (en) * | 2020-07-08 | 2020-10-13 | 华电四川发电有限公司宝珠寺水力发电厂 | Combined bearing for hydroelectric generating set |
| CN112555422A (en) * | 2020-11-02 | 2021-03-26 | 中国长江电力股份有限公司 | Self-pumping self-adjusting infinite circulation sealing system and using method |
| CN114810459A (en) * | 2022-04-26 | 2022-07-29 | 哈尔滨电机厂有限责任公司 | Double-drive self-feed internal circulation forced closed system of hydraulic generator |
| CN115342294A (en) * | 2022-07-22 | 2022-11-15 | 天津市天发重型水电设备制造有限公司 | Novel bearing oil mist collection device |
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| CN101625029A (en) * | 2008-07-07 | 2010-01-13 | 吴雳鸣 | Self-sucking type oil mist sealing purifier |
| CN201836631U (en) * | 2010-09-30 | 2011-05-18 | 千岛精密工业股份有限公司 | Improved oil collecting and recycling structure of rotary cylinder |
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| CN203560707U (en) * | 2013-10-17 | 2014-04-23 | 东方电气集团东方电机有限公司 | Closed circulation system for oil-mist sealing and collection of electric generator |
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2013
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| JPS61184219A (en) * | 1985-02-08 | 1986-08-16 | Hitachi Ltd | Oil leakage preventing device for rotary electrical machinery |
| CN101625029A (en) * | 2008-07-07 | 2010-01-13 | 吴雳鸣 | Self-sucking type oil mist sealing purifier |
| CN201836631U (en) * | 2010-09-30 | 2011-05-18 | 千岛精密工业股份有限公司 | Improved oil collecting and recycling structure of rotary cylinder |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838588A (en) * | 2016-12-19 | 2017-06-13 | 四川白合轴承技术有限公司 | A kind of leading-type oil mist sealing method |
| CN106838588B (en) * | 2016-12-19 | 2019-03-08 | 四川白合轴承技术有限公司 | A kind of leading-type oil mist sealing method |
| CN108757272A (en) * | 2018-06-04 | 2018-11-06 | 中国长江电力股份有限公司 | A kind of turbine-generator units thrust bearing air-tight structure and method |
| CN111765247A (en) * | 2020-07-08 | 2020-10-13 | 华电四川发电有限公司宝珠寺水力发电厂 | Combined bearing for hydroelectric generating set |
| CN112555422A (en) * | 2020-11-02 | 2021-03-26 | 中国长江电力股份有限公司 | Self-pumping self-adjusting infinite circulation sealing system and using method |
| CN114810459A (en) * | 2022-04-26 | 2022-07-29 | 哈尔滨电机厂有限责任公司 | Double-drive self-feed internal circulation forced closed system of hydraulic generator |
| CN114810459B (en) * | 2022-04-26 | 2024-05-03 | 哈尔滨电机厂有限责任公司 | Double-drive self-feed internal circulation forced sealing system of hydraulic generator |
| CN115342294A (en) * | 2022-07-22 | 2022-11-15 | 天津市天发重型水电设备制造有限公司 | Novel bearing oil mist collection device |
| CN115342294B (en) * | 2022-07-22 | 2023-09-12 | 天津市天发重型水电设备制造有限公司 | Bearing oil mist collection device |
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Application publication date: 20140101 |