CN203248734U - Micro-positive-pressure oil groove sealing cover - Google Patents
Micro-positive-pressure oil groove sealing cover Download PDFInfo
- Publication number
- CN203248734U CN203248734U CN2013202267179U CN201320226717U CN203248734U CN 203248734 U CN203248734 U CN 203248734U CN 2013202267179 U CN2013202267179 U CN 2013202267179U CN 201320226717 U CN201320226717 U CN 201320226717U CN 203248734 U CN203248734 U CN 203248734U
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- sealing
- air
- oil groove
- micro
- chamber
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- Expired - Fee Related
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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 utility mode discloses a micro-positive-pressure oil groove sealing cover which comprises a cover body. A high circular ring of an inner ring and a low circular ring of an outer ring are integrally connected to form the cover body; the top and the bottom of the inner wall of the high circular ring are respectively provided with a sealing body making contact with the surface of a rotary shaft; a cavity is further formed in the high circular ring; the cover body is evenly divided into a plurality of sealing units; each sealing unit is provided with an air channel, an air inlet end of each air channel is located above the top of the low circular ring, and an air outlet end of each air channel is connected to the cavity; the top of each sealing unit is provided with a horizontal-pressing breather; an oil-mist separation breather is arranged on the low circular ring. According to the micro-positive-pressure oil groove sealing cover, air flow is led to the cavity according to the micro-positive-pressure sealing principle through air flow generated from the rotation of a unit, and accordingly a micro-positive-pressure air curtain effect is formed in the airtight cavity by the air flow, and the sealing effect of the sealed position is achieved.
Description
Technical field
The utility model relates to hydraulic turbine generator unit lubrication oil groove field of sealing technology, is specially a kind of micro positive pressure oil groove sealing cover.
Background technique
Existing hydraulic turbine generator unit lubrication oil groove sealing cover exists mist of oil leakage, excessive phenomenon in various degree, pollutes and reduces the insulating strength of unit stator and rotor coil to unit, thereby affect the stable operation of unit.
The seal form of existing hydraulic turbine generator unit lubrication oil groove adopts the sealing means such as felt formula, labyrinth ring type and contact-type more, but these sealing means all can't solve the excessive phenomenon of mist of oil fully.Its shortcoming is: after 1, the felt formula is sealed in long-time running since felt with mist of oil inhale full after, follow the string, make between felt and solid of rotation and produce the gap, can't play sealing effect; 2, ring type seal clearance in labyrinth is difficult to adjust, and can't overcome unit natural oscillation and vibration to the destruction in labyrinth ring gap, and because ring type sealing in labyrinth exists intrinsic gap to cause the excessive phenomenon of mist of oil; 3, contact seal is after long-time running, and Follow-up seal jack-up spring failure causes poorly sealedly, and can't solve that there is intrinsic gap in Follow-up seal lap-joint and the excessive phenomenon of mist of oil that causes.
Summary of the invention
The purpose of this utility model provides a kind of micro positive pressure oil groove sealing cover, can be good at solving the defective that existing sealing technique exists, and the air-flow that utilizes unit self rotation to produce adopts the pressure-fired sealing principle of air that oil groove is sealed.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of micro positive pressure oil groove sealing cover, comprise lid, described lid is formed by connecting by the high annulus of inner ring and the low annulus integral type of outer ring, the top of high circle ring inner wall and bottom be equipped with for the seal of rotating shaft Surface Contact, also be provided with chamber in the high annulus, described lid is divided into a plurality of sealing units, each sealing unit is equipped with the air channel, the air intake in air channel is positioned at the top at low annulus top, outlet air end is connected to chamber, and the chamber roof of each sealing unit is provided with the concora crush resuscitation apparatus, and low annulus is provided with mist of oil and separates resuscitation apparatus.
Described air channel is the pipeline of bending, its air intake and opposite direction parallel with outlet air end, and air intake is the reversing shaft sense of rotation, outlet air end is clockwise axle sense of rotation.
Described seal and rotating shaft surface of contact are arc, by cooperatively interacting with rotating shaft so that chamber forms the chamber of sealing.
Described seal 3 adopts carbon/carbon compound materials to make, and has the characteristics such as wear-resisting, oil resistant, high temperature resistant, ageing-resistant, resistance to chemical attack, and has self-lubricating function.
The utility model is according to the pressure-fired sealing principle, the air-flow that utilizes the unit rotation to produce, by the air channel air-flow is introduced in the chamber, so that air-flow forms micro positive pressure air curtain effect in airtight chamber, seal is carried out secondary seal with contacting of rotating shaft, prevent that mist of oil from overflowing, unnecessary air-flow is discharged by the concora crush resuscitation apparatus that is arranged in chamber top.
In addition, the inner mist of oil of oil groove separates by the mist of oil separation resuscitation apparatus that is arranged on the low annulus, and the oil droplet of separating is got back in the oil groove, and gas is discharged by oil gas separator.
Design of the present utility model can be sealed the mist of oil in the hydraulic turbine generator unit lubrication oil groove, does not make the excessive pollution unit of mist of oil; And this seal form novel structure is safeguarded simply, not only can utilize air to seal, and also can utilize air seal and the rotating shaft of contact seal to be cooled off the wearing and tearing of reduction Contact Tooth with the seal binding site.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the utility model overall structure plan view.
Fig. 2 is the A-A face sectional view of Fig. 1.
Fig. 3 is the structural representation in the utility model air channel.
Embodiment
As shown in Figure 1-Figure 3, the utility model comprises lid, described lid is formed by connecting by the high annulus 1 of inner ring and low annulus 2 integral types of outer ring, the top of high annulus 1 inwall and bottom be equipped with for the seal 5 of rotating shaft 4 Surface Contacts, also be provided with chamber 3 in the high annulus 1, described lid is divided into a plurality of sealing units, each sealing unit is equipped with air channel 6, the air intake in air channel 6 is positioned at the top at low annulus 2 tops, outlet air end is connected to chamber 3, chamber 3 tops of each sealing unit are provided with concora crush resuscitation apparatus 7, and low annulus 2 is provided with mist of oil and separates resuscitation apparatus 8.
Described air channel 6 is the pipeline of bending, its air intake and opposite direction parallel with outlet air end, and air intake is the reversing shaft sense of rotation, outlet air end is clockwise axle sense of rotation.
Described seal 5 is arc with the rotating shaft surface of contact, by cooperatively interacting with rotating shaft 4 so that chamber 3 forms the chamber of sealing.
During the utility model operation, unit self rotation produces air-flow and enters in the chamber by the air channel, so that form the air pressure that is slightly larger than oil groove to be sealed in the chamber, so that the mist of oil in the oil groove can not be by oozing out between seal and the rotating shaft, avoid that mist of oil leaks, excessive phenomenon, and the mist of oil in the oil groove can only separate resuscitation apparatus by mist of oil and separates.
In addition, the utility model also can be used for the sealing of various large rotating machinery coolings, oil groove except being used for the cooling of hydraulic turbine generator unit, oil groove sealing; The air intake in air channel can utilize the self-loopa air intake, also can take the mode of external blower fan or source of the gas to come air intake in the situation that do not satisfy the self-loopa air intake.
Claims (3)
1. micro positive pressure oil groove sealing cover, it is characterized in that: comprise lid, described lid is formed by connecting by the high annulus (1) of inner ring and low annulus (2) integral type of outer ring, the top of high annulus (1) inwall and bottom be equipped with for the seal (5) of rotating shaft (4) Surface Contact, also be provided with chamber (3) in the high annulus (1), described lid is divided into a plurality of sealing units, each sealing unit is equipped with air channel (6), the air intake in air channel (6) is positioned at the top at low annulus (2) top, outlet air end is connected to chamber (3), the chamber of each sealing unit (3) top is provided with concora crush resuscitation apparatus (7), and low annulus (2) is provided with mist of oil and separates resuscitation apparatus (8).
2. micro positive pressure oil groove sealing cover according to claim 1 is characterized in that: described air channel (6) are pipeline of bending, its air intake and opposite direction parallel with outlet air end, and air intake is the reversing shaft sense of rotation, outlet air end is clockwise axle sense of rotation.
3. micro positive pressure oil groove sealing cover according to claim 1 is characterized in that: described seal (5) is arc with the rotating shaft surface of contact, by cooperatively interacting with rotating shaft (4) so that chamber (3) forms the chamber of sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202267179U CN203248734U (en) | 2013-04-28 | 2013-04-28 | Micro-positive-pressure oil groove sealing cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202267179U CN203248734U (en) | 2013-04-28 | 2013-04-28 | Micro-positive-pressure oil groove sealing cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203248734U true CN203248734U (en) | 2013-10-23 |
Family
ID=49375173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202267179U Expired - Fee Related CN203248734U (en) | 2013-04-28 | 2013-04-28 | Micro-positive-pressure oil groove sealing cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203248734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-04-28 CN CN2013202267179U patent/CN203248734U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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: 20131023 Termination date: 20170428 |