CN101988579B - Axial gapless sealing device - Google Patents
Axial gapless sealing device Download PDFInfo
- Publication number
- CN101988579B CN101988579B CN200910072639XA CN200910072639A CN101988579B CN 101988579 B CN101988579 B CN 101988579B CN 200910072639X A CN200910072639X A CN 200910072639XA CN 200910072639 A CN200910072639 A CN 200910072639A CN 101988579 B CN101988579 B CN 101988579B
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- China
- Prior art keywords
- ring
- annular guide
- rotating shaft
- turbine oil
- guide channel
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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 Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses an axial gapless sealing device. The technical scheme has the key points that an upper wearing ring is fixed at the upper end of a rotating shaft in a turbine oil slot, a lower wearing ring is fixed at the lower end of the rotating shaft, and a lower split sealing cover is fixed below the turbine oil slot; after multiple layers of annular labyrinth teeth are radially inlaid on an upper split sealing cover adjacent to the inner diameter of the rotating shaft and a plurality of sealing springs are installed below an annular guide slot, a sealing ring is installed, and the external surface of the sealing ring is provided with a long spacing hole; and a locking bolt is screwed in the central position of the long spacing hole through the external wall of the annular guide slot, and a U-shaped sealed pipe is installed at the external part of the lower end of the annular guide slot and is communicated with the annular guide slot. The device does not require hole shrinkage to compensate wearing loss, avoids the problems of oil leakage at joggle joints and rotating shaft wearing by split sealing bodies, is simple for machining and is widely applied to the fields of electricity generation, chemical industry, ship building and the like.
Description
Technical field:
The present invention is a kind of device for hydraulic generator unit rotating shaft place sealing.
Background technique:
The lubricated turbine oil of current hydraulic generator unit rotatable parts all exists in various degree to external leakage, bring many hidden danger to unit safety operation, also polluted simultaneously dirty water quality, current for solving hydraulic generator unit or Turbo-generator Set turbine oil to this technical problem of external leakage, the mechanical hard packing sealing of main employing, namely adopt various forms of distinguish seals, under the effect of preloading spring, seal with the rotating shaft Surface Contact, adopt the tenon formula to connect between the distinguish seal, and leave gap value, compensate its wear extent in order to carry out undergauge after the seal ring that is made of many flap seals body is worn, there is lower column defects in this scheme for sealing: one, distinguish seal joggle place must leave the gap value of compensate for wear, causes poorly sealedly, makes turbine oil to external leakage; Two, seal ring countershaft surface abrasion under the effect of preloading spring of distinguish seal formation is serious; Three, distinguish seal tenon shape linkage structure processing difficulties is so hydraulic generator unit or other rotary machine are badly in need of a kind of technological scheme that can overcome the technique scheme defective.
Summary of the invention:
Purpose of the present invention aims to provide a kind of axial gapless sealing device, to overcome the many defectives in the prior art scheme.The technique effect that the present invention will reach is to adopt following technological scheme to realize, a kind of axial gapless sealing device, it has upper and lower distinguish sealing cover, ring-like labyrinth teeth, U-shaped sealed pipe, rotating shaft, the turbine oil groove, it is characterized in that: rotating shaft in turbine oil groove upper end also is fixed with lower wearing ring by retaining screw, be fixed with upper wearing ring closing face and retaining ring in the rotating shaft of turbine oil groove lower end, be fixed with lower distinguish sealing cover below the turbine oil groove; Radially inlay the ring-like labyrinth teeth of multilayer at upper distinguish sealing cover by on the internal diameter of rotating shaft, after a plurality of Packing springs are housed below annular guide channel, the seal ring of on Packing spring, packing into again, the seal ring external diameter surface has microscler spacing hole, anti-turn bolt is screwed into microscler spacing hole neutral position by the annular guide channel outer wall, loads onto U-shaped sealed pipe in outside, annular guide channel lower end and is communicated with annular guide channel.Lower distinguish sealing cover is provided with Packing spring and seal ring.
Working principle of the present invention is for to be fixed on upper wearing ring in the rotating shaft by retaining screw, closing face and retaining ring, is the phenomenon of distinguish seal mill rotating shaft in the prior art.The ring-like labyrinth teeth of multilayer that is embedded on the distinguish sealing cover internal diameter has prevented that effectively a large amount of turbine oil oil droplets from outwards splashing and the oil wave is excessive, a large amount of excessive turbine oils are blocked in the turbine oil groove by the damping that ring-like labyrinth ring forms, have reduced the excessive phenomenon of turbine oil.After below the annular guide channel of upper distinguish sealing cover a plurality of Packing springs being housed, load onto in the above seal ring, seal ring contacts with wearing ring is servo-actuated under the effect of Packing spring, thereby reaches gap-free sealed again.For seal ring is rotated with wearing ring, have a plurality of microscler spacing holes in the seal ring outside, again anti-turn bolt is screwed into microscler spacing hole central position by the annular guide channel outer wall.In order to prevent that annular guide channel from having turbine oil and in the annular guide channel bottom a U-shaped sealed pipe being housed, the turbine oil in the annular guide channel can flow back in the turbine oil groove by U-shaped sealed pipe, but the mist of oil in the turbine oil groove can not enter in the annular guide channel.Lower wearing ring and lower distinguish sealing cover are housed in turbine oil groove lower end are in order to prevent turbine oil from turbine oil groove inside to external leakage, its basic functional principle is consistent with the sealing principle of upper distinguish sealing cover.
Seal ring among the present invention does not need undergauge compensate for wear amount, avoided the gap oil leakage at joggle place, solved well the problem of distinguish seal wearing and tearing rotating shafts, simultaneously seal ring processing is very simple, saved the joggle mode, therefore the present invention design ingenious, simple in structure, practical, be a good technological scheme with novelty, creativeness and practicability, will be widely used in the fields such as generating, chemical industry, shipbuilding.
Description of drawings:
Fig. 1. the axial gapless sealing device plan view
Wherein:
1, fixedly spiral shell 2, closing face 3, rotating shaft
4, retaining ring 5, upper wearing ring 6, ring-like labyrinth teeth
7, seal ring 8, microscler spacing hole 9, anti-turn bolt
10, annular guide channel 11, Packing spring 12, upper distinguish sealing cover
13, U-shaped sealed pipe 14, turbine oil 15, turbine oil groove
16, lower distinguish sealing cover 17, lower wearing ring
Embodiment:
Below 1 mode of execution, characteristic effect are described below with reference to the accompanying drawings:
At first keep certain microspur to be embedded on upper distinguish sealing cover (12) internal diameter the ring-like labyrinth teeth of multilayer (6) and rotating shaft, in annular guide channel (10) lower outer a U-shaped sealed pipe (13) is housed and communicates with annular guide channel (10) inside.Then with upper distinguish sealing cover (12) being fixed on after closing on the turbine oil groove (15), in annular guide channel (10), pack into first behind a plurality of Packing springs (11), reinstall seal ring (7) with microscler spacing hole (8) in annular guide channel (10), anti-turn bolt (9) is screwed into microscler spacing hole (8) central position by annular guide channel (10) outer wall.With retaining screw (1) by close face (2) and retaining ring (4) upper wearing ring (5) be fixed on rotating shaft (3) upper and with the top close contact of seal ring (7).Lower wearing ring (17) is fixed in the rotating shaft (3) of turbine oil groove (15) lower end, the lower distinguish sealing cover (16) of Packing spring (11) and seal ring (7) fixedly is housed in turbine oil groove (15) bottom, seal ring (7) is contacted with lower wearing ring (17).Implement complete.
Claims (1)
1. axial gapless sealing device, it has upper and lower distinguish sealing cover, annular guide channel, ring-like labyrinth teeth, U-shaped sealed pipe, rotating shaft, the turbine oil groove is characterized in that:
Rotating shaft in turbine oil groove upper end is by retaining screw, be fixed with upper wearing ring closing face and retaining ring, and the rotating shaft in turbine oil groove lower end is fixed with lower wearing ring, is fixed with lower distinguish sealing cover below the turbine oil groove; Radially inlay the ring-like labyrinth teeth of multilayer at upper distinguish sealing cover by on the internal diameter of rotating shaft, after a plurality of Packing springs are housed below annular guide channel, the seal ring of on Packing spring, packing into again, the seal ring external diameter surface has microscler spacing hole, anti-turn bolt is screwed into microscler spacing hole neutral position by the annular guide channel outer wall, loading onto U-shaped sealed pipe in outside, annular guide channel lower end is communicated with annular guide channel, lower distinguish sealing cover is provided with Packing spring and seal ring, seal ring contacts with wearing ring is servo-actuated under the effect of Packing spring, thereby reaches axial gapless sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910072639XA CN101988579B (en) | 2009-08-05 | 2009-08-05 | Axial gapless sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910072639XA CN101988579B (en) | 2009-08-05 | 2009-08-05 | Axial gapless sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101988579A CN101988579A (en) | 2011-03-23 |
| CN101988579B true CN101988579B (en) | 2013-01-02 |
Family
ID=43745277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910072639XA Active CN101988579B (en) | 2009-08-05 | 2009-08-05 | Axial gapless sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101988579B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB861557A (en) * | 1958-10-01 | 1961-02-22 | Sulzer Ag | Sealing means for shafts |
| CN2651464Y (en) * | 2003-10-24 | 2004-10-27 | 秦皇岛爱迪电力技术有限责任公司 | Adjustable bearing sealing guard of hydroelectric generating set |
| CN201582033U (en) * | 2009-08-05 | 2010-09-15 | 韩宏波 | Axial gapless sealing device |
-
2009
- 2009-08-05 CN CN200910072639XA patent/CN101988579B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB861557A (en) * | 1958-10-01 | 1961-02-22 | Sulzer Ag | Sealing means for shafts |
| CN2651464Y (en) * | 2003-10-24 | 2004-10-27 | 秦皇岛爱迪电力技术有限责任公司 | Adjustable bearing sealing guard of hydroelectric generating set |
| CN201582033U (en) * | 2009-08-05 | 2010-09-15 | 韩宏波 | Axial gapless sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101988579A (en) | 2011-03-23 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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