CN203743438U - Seal tooth structure capable of preventing generator bearing from shedding oil and preventing overflowing of oil mist - Google Patents
Seal tooth structure capable of preventing generator bearing from shedding oil and preventing overflowing of oil mist Download PDFInfo
- Publication number
- CN203743438U CN203743438U CN201420160179.2U CN201420160179U CN203743438U CN 203743438 U CN203743438 U CN 203743438U CN 201420160179 U CN201420160179 U CN 201420160179U CN 203743438 U CN203743438 U CN 203743438U
- Authority
- CN
- China
- Prior art keywords
- oil
- sealing
- tooth
- rotating shaft
- seal
- 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.)
- Withdrawn - After Issue
Links
Classifications
-
- 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
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a seal tooth structure capable of preventing a generator bearing from shedding oil and preventing overflowing of oil mist. A seal cover is arranged between a groove cover and a rotating shaft to seal a space between an oil groove and the rotating shaft; a seal tooth is arranged between the seal cover and the rotating shaft, a gap is reserved between the seal tooth and the rotating shaft, and the inner side of the seal tooth is provided with a tilted groove; the oil groove or the seal cover is provided with a suction opening which is connected with an oil mist exhaust device through a pipeline to suck air of the oil groove in the seal cover. By the aid of the seal tooth structure, the oil mist generated in operation of a generator set can be sealed and limited in the oil groove; when the rotating shaft is in high-speed rotation, air enters the oil groove from the upper portion of the seal tooth through the tilted groove and the gap between the seal tooth and the rotating shaft to achieve an airtight effect, and the oil mist in the oil groove is prevented from overflowing; since the gap is reserved between the seal tooth and the rotating shaft, no friction and heat is generated between the seal tooth and the rotating shaft, ageing of the seal tooth is prevented, and consequently the service life of the seal tooth is prolonged; the rotating shaft is protected from abrasion.
Description
Technical field
The utility model relates to a kind of parts of power generating equipment, in particular for having the high tacho generator of lubricant oil or cold oil, prevents that dynamo bearing from getting rid of the sealing toothing that oil and mist of oil overflow.
Technical background
On equipment in relative rotation, between the rotor of power generating equipment and stator, all need lubricant oil or cold oil lubricating, cooling associated components, as rotor shaft etc., in lubricated these parts, its temperature is taken away, reduced to the heat producing when rotary part is turned round, and peventing member is burned or is stuck etc., to extend its working life.
The bearing of power generating equipment is immersed in lubricant oil, because bearing is high-speed rotary part, causes lubricant oil high-speed impact in oil groove, very easily occurs getting rid of oily phenomenon and mist of oil spillover, not only befouling environment but also may cause insulation fault.
Bearing of hydraulic generator generally adopts self-lubricating plain bearing, and bearing liner is invaded profit in lubricant oil.In the time that unit turns round, lubricant oil stirs, clashes in oil groove on the one hand, produces a large amount of bubbles, bubble eruption forms mist of oil, and the local place of tiling oil film temperature is higher on the other hand, lubricant oil vaporization, form mist of oil, therefore for hydraulic turbine generator, the generation of mist of oil is inevitable, and along with the increasing of generating unit speed, the diameter of rotating shaft increases, linear velocity increases, make oil sputter everywhere, rotating shaft is directly taken oil out of, causes outer get rid of oily phenomenon, severe contamination surrounding enviroment.Due to the High Rotation Speed of rotor, form negative pressuren zone above lubricating oil sump again, by the mist of oil sucking-off in oil groove, the mist of oil order of severity increases.
For hydraulic generator unit mist of oil problem, the applicant has applied for that on November 29th, 2013 name is called the patent of invention that " preventing the device that dynamo bearing mist of oil overflows ", application number are 2013106206840, it can play anti-negative pressure, prevent from getting rid of oil outward and mist of oil being carried out to the effects such as processing in time, but owing to being close contact between elastomer seal and rotating shaft, all there are wearing and tearing in the contact position of elastomer seal and rotating shaft, and to produce heat, make the elastomer seal of macromolecule material more easily aging, reduce working life.
Model utility content
The utility model, for the deficiencies in the prior art, provides one to have anti-oil mist overflowing function, anti-and can prevent that generator from getting rid of oil outward, and structure simply prevents that dynamo bearing from getting rid of the sealing toothing that oil and mist of oil overflow as far as possible.
The technical solution of the utility model: prevent that dynamo bearing from getting rid of the sealing toothing that oil and mist of oil overflow, comprise the oil groove and the rotating shaft that are arranged on generator body, it is characterized in that: between groove lid and rotating shaft, sealing cover is set, the space sealing between oil groove and rotating shaft is got up; Between sealing cover and rotating shaft, the sealing tooth together or is together set; Between sealing tooth and rotating shaft, leaving gap, is contactless; At the inner side surface of sealing tooth, be provided with skewed slot, skewed slot and vertical direction are not parallel;
On oil groove or sealing cover, suction opeing is set, suction opeing is connected with oil mist remover through pipeline, and oil mist remover aspirates the gas of the oil groove in sealing cover by pipeline, and it is processed.
Further feature is: on the end face of sealing cover, caulking groove is set, the sealing tooth of ring-type is embedded in caulking groove.
Sealing tooth be twice or more than, the sealing tooth being arranged above and below, the skewed slot sealing together on it on tooth staggers mutually with the lower position that seals together skewed slot corresponding on tooth, directly not corresponding, formation labyrinth structure.
At the end face of sealing cover, upper and lower two groups of seal rings are set, every group of seal ring is all made up of the two seals tooth being arranged above and below; The two seals tooth being arranged above and below, the skewed slot sealing together on it on tooth staggers mutually with the lower position that seals together skewed slot corresponding on tooth, directly not corresponding, forms labyrinth structure; Between two groups of seal rings that are arranged above and below, form a seal chamber.
The sealing toothing that prevents that dynamo bearing mist of oil from overflowing of the present utility model, tool has the following advantages:
The mist of oil that 1, can produce in the time moving generator set seals, and mist of oil is limited in oil groove, is difficult to outwards fly away; And, due to the pumping action of the suction opeing in oil groove, and the skewed slot effect of sealing tooth, in the time of rotating shaft high speed rotating, air is that the gap between skewed slot and sealing tooth and rotating shaft enters in oil groove above sealing tooth, reach hermetic seal effect, the mist of oil in oil groove can not overflow from the gap between skewed slot and sealing tooth and rotating shaft, enters in air and then pollutes power generating equipment parts around.
2, between sealing tooth and rotating shaft, do not need close contact, leave gap, thus in the time that rotating shaft rotate, itself and seal between tooth and substantially do not produce friction, do not produce heat, make the sealing tooth of macromolecule material not aging, significant prolongation its working life; And, avoid countershaft to cause wearing and tearing.
If 3 dry in seal chamber by blower fan, hermetic seal better effects if.
4, sealing of the present utility model is a kind of hermetic seal actually, and its sealing effect for mist of oil is more much better than traditional contact sealing effect.
5, sealing tooth also has the oil preventing in oil groove and sputters oil groove and prevent the effect that oil throws away.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model device partial structurtes sectional views;
Fig. 2 the utility model sealing toothing schematic diagram;
Fig. 3 is that Fig. 2 is along C to partial view;
Fig. 4 arranges two seals tooth view on sealing cover;
Fig. 5 is two seals tooth cooperating structure schematic diagram in Fig. 4;
Fig. 6 arranges more than twice to seal tooth view on sealing cover;
Fig. 7 is the utility model device the second example structure sectional view
1-oil groove, 2-rotating shaft, 3-sealing cover, 4-sealing tooth, 5-skewed slot, 6-seal chamber, 7-suction opeing, 8-pipeline, 9-oil mist remover, 10-blowing mouth, 31-caulking groove.
Embodiment
As shown in Fig. 1,2,5,6, the sealing toothing that prevents that dynamo bearing mist of oil from overflowing of the present utility model, comprise the oil groove 1 and the rotating shaft 2 that are arranged on generator body, the lubricant oil that the cavity of oil groove 1 inside is lubricated as the rotatable parts (bearing) of depositing generator, it is a circumferential groove, along with the rising of temperature, be immersed in the High Rotation Speed of the bearing in lubricant oil to the stirring of fluid, effect of impact, make lubricant oil can produce mist of oil, even make lubricant oil produce and splash, be full of the cavity of oil groove 1 inside; Improvement of the present utility model arranges sealing cover 3 between oil groove 1 and rotating shaft 2, and the space sealing between oil groove 1 and rotating shaft 2 is got up, and forms the airtight cavity of a relative closure, substantially the cavity of whole oil groove 1 inside is isolated from the outside out; Because rotating shaft 2 is high-speed rotary parts of generator, between sealing cover 3 and rotating shaft 2, sealing tooth 4 together or is together set, the normally end face of embedding sealing lid 3 of the sealing tooth 4 of ring-type, caulking groove 31 is set on the end face of sealing cover 3, in the caulking groove 31 of the sealing tooth of ring-type 4 embedding sealing lid 3 end faces; Between sealing tooth 4 and rotating shaft 2, leaving gap, is contactless.
Sealing tooth 4 is macromolecular materials, plastics, rubber or other suitable materials, and sealing tooth 4 is ring structurees; At the inner side surface of sealing tooth 4, i.e. the side corresponding with rotating shaft 2, is provided with through skewed slot 5, and skewed slot 5 is grooves, penetrates into lower end surface from the upper-end surface of sealing tooth 4 oblique, and the degree of depth is 1mm～10mm, and width is suitable; Some roads skewed slot 5 is parallel to each other; Skewed slot 5 is not parallel with vertical direction, and the angle of itself and vertical direction is for being greater than 0 ° to being less than 90 °, and preferred range is 25 °-55 °.When assembling, between sealing tooth 4 and rotating shaft 2, leave gap, this gap is greater than 0, and after assembling, the direction of the skewed slot 5 of sealing tooth 4 is identical with the sense of rotation of rotating shaft 2, the High Rotation Speed (rotating shaft 2 larger to diameter, its angular velocity may be little, but the linear velocity of its outer surface is very high) rotating shaft 2 in the time rotating, drive Air Flow, make to enter in sealing cover 3 gap of air between skewed slot 5 and sealing tooth 4 and the rotating shaft 2 of sealing tooth 4, pass into the top of oil groove.
In Fig. 2,3,4,5, sealing tooth 4 is minimum is together, can be twice or more than, shown in Fig. 2 is the structure that two seals tooth 4 is arranged above and below; Two caulking grooves 31 that are arranged above and below are set on sealing cover 3, and every caulking groove 31 is embedded in sealing tooth 4 one.The two seals tooth 4 being arranged above and below, the skewed slot 5 sealing together on it on tooth 4 staggers mutually with the lower position that seals together skewed slot corresponding on tooth 45, directly not corresponding, forms labyrinth structure; Go up skewed slot 5 correspondences that seal together on tooth 4 and down the position that seals together non-skewed slot 5 on tooth 4, the skewed slot 5 of upper-lower seal tooth 4 staggers mutually.
Shown in Fig. 4, be, at the end face of sealing cover 3, upper and lower two groups of seal rings are set, every group of seal ring is all made up of the two seals tooth 4 being arranged above and below; The two seals tooth 4 being arranged above and below, the skewed slot 5 sealing together on it on tooth 4 staggers mutually with the lower position that seals together skewed slot corresponding on tooth 45, directly not corresponding, forms labyrinth structure.Between two groups of seal rings that are arranged above and below, form a seal chamber 6; As required, can the seal ring that N group is arranged above and below be set at the end face of sealing cover 3, form the seal chamber of (N-1), can obtain very excellent oil sealing effect.
On oil groove 1 or sealing cover 3, suction opeing 7 is set, in Fig. 5, be arranged on sealing cover 3, suction opeing 7 is connected with oil mist remover 9 through pipeline 8, and oil mist remover 9 aspirates the gas (oil-containing gases) of the oil groove in sealing cover 3 by pipeline 8, and it is processed.Oil mist remover 9 is a kind of prior aries, and concrete structure has a variety of, can adopt the associated processing device of prior art; The utility model provides a kind of concrete structure, and referring to the applicant, in the utility model patent of 2011-07-07 application, name is called " direct-emission type oil mist absorbing device ", and application number is 201120237483.9.
Because skewed slot 5 and vertical direction are not parallel, therefore even if rotating shaft 2 is stirred the oil in oil groove in the time rotating, make its up sputter, all can not from skewed slot 5, overflow oil sealing effect excellence.Especially at multiple-sealed tooth 4, mutually stagger and form after labyrinth structure, more can not from skewed slot 5, overflow, oil sealing effect is more excellent.
As shown in Figure 7, the second example structure of the present utility model, blowing mouth 10 is set on sealing cover 3, adopt as required blast device (as blower fan etc.) by blowing mouth 10, air being blown under slave mode, gap and skewed slot 5 between sealing tooth 4 and rotating shaft 2 pass in oil groove, be inhaled into the 9 interior processing of oil extraction mist device through suction opeing 7, pipeline 8, form the gas flow route as shown in figure arrow, more can prevent from mist of oil from skewed slot 5 and seal between the gap between tooth 4 and rotating shaft 2 revealing, sealing effect is better.
Working procedure of the present utility model: in the time that generator is worked, rotating shaft 2, in rotation status, is opened oil mist remover 9 simultaneously, makes it pass through pipeline 8 and aspirate the oil-containing gases of the oil groove in sealing cover 3; Now, the gas pressure in sealing cover 3 reduces, in negative pressure state; Fresh air (extraneous fresh air) on sealing cover 3 is automatically from the gap between skewed slot 5 and sealing tooth 4 and the rotating shaft 2 of sealing tooth 4, enter (in sealing cover 3) in oil groove, or extraneous fresh air is blown into through blowing mouth 10, then enter oil groove interior (in sealing cover 3); Air with mist of oil in oil groove is siphoned away and processes, filters through pipeline 8 by oil mist remover, forms circulation, thereby reaches the object that stops that mist of oil is excessive, obtains very excellent oil sealing effect.
Finally it should be noted that, above embodiment is only in order to the technical solution of the utility model to be described but not restriction technologies scheme, although claimant has been described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, those are modified to the technical solution of the utility model or are equal to replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present utility model.
Claims (4)
1. prevent the sealing toothing that dynamo bearing mist of oil overflows, comprise the oil groove (1) and the rotating shaft (2) that are arranged on generator body, it is characterized in that: between oil groove (1) and rotating shaft (2), sealing cover (3) is set, the space sealing between oil groove (1) and rotating shaft (2) is got up; Between sealing cover (3) and rotating shaft (2), the sealing tooth (4) together or is together set; Between sealing tooth (4) and rotating shaft (2), leaving gap, is contactless; At the inner side surface of sealing tooth (4), be provided with through skewed slot (5), skewed slot (5) is not parallel with vertical direction;
On oil groove (1) or sealing cover (3), suction opeing (7) is set, suction opeing (7) is connected with oil mist remover (9) through pipeline (8), oil mist remover (9) aspirates the gas of sealing cover (3) inner oil sump by pipeline (8), and it is processed.
2. the sealing toothing that prevents that dynamo bearing mist of oil from overflowing according to claim 1, is characterized in that: caulking groove (31) is set on the end face of sealing cover (3), in the caulking groove (31) of sealing tooth (4) embedding sealing lid (3) end face of ring-type.
3. the sealing toothing that prevents that dynamo bearing mist of oil from overflowing according to claim 1 and 2, it is characterized in that: described sealing tooth (4) for twice or more than, the sealing tooth (4) being arranged above and below, the skewed slot (5) sealing together on it on tooth (4) staggers mutually with the lower position that seals together the upper corresponding skewed slot (5) of tooth (4), directly not corresponding, form labyrinth structure.
4. the sealing toothing that prevents that dynamo bearing mist of oil from overflowing according to claim 1 and 2, is characterized in that: at the end face of sealing cover (3), upper and lower two groups of seal rings are set, every group of seal ring is all made up of the two seals tooth (4) being arranged above and below; The two seals tooth (4) being arranged above and below, the skewed slot (5) sealing together on it on tooth (4) staggers mutually with the lower position that seals together the upper corresponding skewed slot (5) of tooth (4), directly not corresponding, forms labyrinth structure; Between two groups of seal rings that are arranged above and below, form a seal chamber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420160179.2U CN203743438U (en) | 2014-04-03 | 2014-04-03 | Seal tooth structure capable of preventing generator bearing from shedding oil and preventing overflowing of oil mist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420160179.2U CN203743438U (en) | 2014-04-03 | 2014-04-03 | Seal tooth structure capable of preventing generator bearing from shedding oil and preventing overflowing of oil mist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743438U true CN203743438U (en) | 2014-07-30 |
Family
ID=51343239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420160179.2U Withdrawn - After Issue CN203743438U (en) | 2014-04-03 | 2014-04-03 | Seal tooth structure capable of preventing generator bearing from shedding oil and preventing overflowing of oil mist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743438U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883735A (en) * | 2014-04-03 | 2014-06-25 | *** | Sealing tooth structure preventing shed oil of electricity generator bearing and oil mist overflowing |
| 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 |
-
2014
- 2014-04-03 CN CN201420160179.2U patent/CN203743438U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883735A (en) * | 2014-04-03 | 2014-06-25 | *** | Sealing tooth structure preventing shed oil of electricity generator bearing and oil mist overflowing |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1184609B1 (en) | Liquid seal | |
| CN103883735A (en) | Sealing tooth structure preventing shed oil of electricity generator bearing and oil mist overflowing | |
| WO2009040519A1 (en) | Isolator sealing device | |
| CN203743438U (en) | Seal tooth structure capable of preventing generator bearing from shedding oil and preventing overflowing of oil mist | |
| WO2019218617A1 (en) | Multi-functional electric motor bearing sealing structure | |
| CN106051163A (en) | High-speed train gearbox shaft sealing structure | |
| TW201708749A (en) | Shaft seal assembly | |
| CN102705517A (en) | Bearing sealing waterproof structure | |
| CN203979415U (en) | A kind of gas sealing mechanism of machine tool chief axis | |
| CN201265651Y (en) | Sealing device for mechanical rotating shaft | |
| CN102588602B (en) | centrifuge bearing composite sealing device | |
| CN102996808A (en) | Protective oil seal | |
| CN204553321U (en) | Impeller type pressure adjustable mechanical seal component | |
| CN105351366A (en) | Bearing end cap seal device | |
| CN206320295U (en) | Rotate the liquid sealing structure of machinery | |
| CN104074792A (en) | Slurry pump bracket end bearing oil seat structural combination | |
| CN202955231U (en) | Novel bearing housing sealing structure | |
| CN202883746U (en) | Bearing lubricant sealing structure | |
| CN203822650U (en) | Dry milling resistant fluoroplastic magnetic drive pump | |
| CN202971929U (en) | Protection oil seal | |
| CN202260785U (en) | Motor bearing lubrication system | |
| CN203978910U (en) | When high speed rotor start and stop, prevent the structure that seal ring damages | |
| CN103480290B (en) | Interventional high-speed fly cutter unit of horizontal mixer | |
| KR20210035726A (en) | Slinger ring with taper roller bearing | |
| CN207034005U (en) | A kind of new jaw breaks machine bearing sealing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140730 Effective date of abandoning: 20160713 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |