CN101825178A - Lubricating mechanical sealing end surface for counter-current dynamical pressure groove - Google Patents
Lubricating mechanical sealing end surface for counter-current dynamical pressure groove Download PDFInfo
- Publication number
- CN101825178A CN101825178A CN 201010133974 CN201010133974A CN101825178A CN 101825178 A CN101825178 A CN 101825178A CN 201010133974 CN201010133974 CN 201010133974 CN 201010133974 A CN201010133974 A CN 201010133974A CN 101825178 A CN101825178 A CN 101825178A
- Authority
- CN
- China
- Prior art keywords
- end surface
- pressure groove
- lubricating
- mechanical sealing
- sealing pair
- 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.)
- Pending
Links
Images
Landscapes
- Mechanical Sealing (AREA)
Abstract
The invention relates to a lubricating mechanical sealing end surface for a counter-current dynamical pressure groove. The lubricating mechanical sealing end surface is characterized in that a plurality of circular-arc dynamical pressure grooves (a) which are disposed from the internal holes to the external circles are distributed on the end surfaces of the internal circles on the end surfaces of the sealing pair for the mechanically-sealed fixed ring or movable ring. The lubricating mechanical sealing end surface has simple structure and is convenient to process, can be used for leading the isolated fluid medium with good lubricating performance in the inner cavity onto the end surfaces of the internal circles of the sealing pair to lubricate a dynamical pressure gasket. The lubricating mechanical sealing end surface can be used in the occasion having poor lubricating performance and containing gas, mud and sand and the occasion where the working medium is easy to gasify to improve the sealing performance.
Description
Technical field
What the present invention relates to is the end face seal pair of mechanical seal device, the i.e. end-face structure of stationary ring or rotating ring.
Background technique
Mechanical seal is a kind of dependence elastic element to the secondary pretension of dynamic and static ring end-face friction, and dynamic and static ring end-face friction pair is rotatably assorted, and carries out the friction sealed axial end seal arrangement that prevents dielectric leakage.
In the prior art in order to improve the lubricity of sealing pair, cylindrical ring portion on moving or stationary ring end face offers the dynamic pressure groove in by outer radial, the cylindrical of envelope medium by seal face that hindered that has certain pressure enters the end face outer portion, produces the hydrodynamic effect, is lubricated.Its shortcoming deficiency is to be used for the bad medium of some lubricities, or medium easily gasifies, contains gas, silt particle seals when using, and is very bad to the lubrication of friction pair, end-face friction heat is excessive, can produce hot tearing or sharp wear, even a large amount of the leakage, so that lost efficacy, be difficult to satisfy seal request.
Summary of the invention
It is simple to the purpose of this invention is to provide a kind of processing, and the end face seal good stability can two-wayly rotate, the mechanical seal end surface that lubricity is good.
Technical characteristics of the present invention is, evenly is distributed on the interior annulus end surface of the stationary ring of mechanical seal or rotating ring sealing pair end face and is provided with the circular groove formula dynamic pressure groove a that several are offered to cylindrical by endoporus.
Mechanical seal of the present invention is when work, the sealing pair outer portion can be born the working medium with a level pressure, when quiet, rotating ring sealing pair cooperates rotary work, by endoporus under the effect of the circular groove formula dynamic pressure groove a that cylindrical is offered, the insulating liquid that lubricity in the sealing pair bore is good is drawn into the interior annulus end surface of sealing pair end face, on the interior annulus end surface of sealing pair, form many fluid dynamic wedges and zone of high pressure, produce the hydrodynamic effect, form hydrodynamic carrying and lubricating ability, the sealing pair end face is lubricated.
Circular groove formula indent a of the present invention is simple in structure, easy to process, can two-way rotation use.To be lower than in the bore of the outer cavity pressure of sealing pair the good buffer fluid medium of lubricity and introduce oppositely that to form the dynamic pressure pad in the sealing pair on the annulus end surface lubricated, it is bad to satisfy the working medium lubricity, occasion when perhaps working medium easily gasifies, contains gas, silt particle is used, and improves sealability.
Description of drawings
Fig. 1, the 2nd, embodiment of the invention structural representation, Fig. 1 are plan views, Fig. 2 is the A-A sectional view of Fig. 1
Embodiment
The present invention evenly is distributed on the interior annulus end surface of the stationary ring of mechanical seal or rotating ring sealing pair end face and is provided with several and extends the circular groove formula dynamic pressure groove a that offers by the outside circular direction of interior bore edges.
Press the sealing pair of different-diameter size, the quantity difference that circular groove formula dynamic pressure groove a offers.
The axial depth of circular groove formula dynamic pressure groove a is 0.4～1mm;
Radial depth H=(￠ 2-￠ 1) ÷ 2 * (1/3～2/5) of circular groove formula dynamic pressure groove a;
￠ 1: sealing pair end face internal diameter;
￠ 2: sealing pair end face external diameter.
Prove by experiment, the arc groove formula dynamic pressure groove a that on the internal ring portion end face of sealing pair, evenly offers, can two-way rotation use, can bring the fluid partitioning in the endoporus into end face, form the hydrodynamic effect, the medium that is used to carry is a viscosity, easily gasification, particularly during the medium of oil and gas multiphase flow poor lubricity, the seal face working state is good.
Claims (1)
1. lubricating mechanical sealing end surface for counter-current dynamical pressure groove, it is characterized in that, on the interior annulus end surface of the stationary ring of mechanical seal or rotating ring sealing pair end face, evenly be distributed and be provided with several and extend the circular groove formula dynamic pressure groove of offering (a) by the outside circular direction of interior bore edges.
Press the sealing pair of different-diameter size, the quantity difference that circular groove formula dynamic pressure groove a offers.
The axial depth of circular groove formula dynamic pressure groove (a) is 0.4～1mm;
The radial depth H=of circular groove formula dynamic pressure groove (a) (￠ 2-￠ 1) ÷ 2 * (1/3～2/5);
￠ 1: sealing pair end face internal diameter;
￠ 2: sealing pair end face external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133974 CN101825178A (en) | 2010-03-26 | 2010-03-26 | Lubricating mechanical sealing end surface for counter-current dynamical pressure groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133974 CN101825178A (en) | 2010-03-26 | 2010-03-26 | Lubricating mechanical sealing end surface for counter-current dynamical pressure groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101825178A true CN101825178A (en) | 2010-09-08 |
Family
ID=42689267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010133974 Pending CN101825178A (en) | 2010-03-26 | 2010-03-26 | Lubricating mechanical sealing end surface for counter-current dynamical pressure groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101825178A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321949A (en) * | 2013-07-09 | 2013-09-25 | 哈尔滨电气动力装备有限公司 | Seal ring friction pair for hydrodynamic mechanical seal of reactor coolant pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1237943A (en) * | 1968-10-28 | 1971-07-07 | ||
| US3744805A (en) * | 1968-06-08 | 1973-07-10 | Kupfer Asbest Co | Slide ring for axially acting shaft sealing rings |
| US20050263963A1 (en) * | 2004-05-28 | 2005-12-01 | Wei-Tang Lai | Mechanical seal ring assembly with hydrodynamic pumping mechanism |
| CN201149090Y (en) * | 2007-12-26 | 2008-11-12 | 丹东克隆集团有限责任公司 | Step circular arc slot mechanical seal end face capable of bidirectional rotating |
-
2010
- 2010-03-26 CN CN 201010133974 patent/CN101825178A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3744805A (en) * | 1968-06-08 | 1973-07-10 | Kupfer Asbest Co | Slide ring for axially acting shaft sealing rings |
| GB1237943A (en) * | 1968-10-28 | 1971-07-07 | ||
| US20050263963A1 (en) * | 2004-05-28 | 2005-12-01 | Wei-Tang Lai | Mechanical seal ring assembly with hydrodynamic pumping mechanism |
| CN201149090Y (en) * | 2007-12-26 | 2008-11-12 | 丹东克隆集团有限责任公司 | Step circular arc slot mechanical seal end face capable of bidirectional rotating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321949A (en) * | 2013-07-09 | 2013-09-25 | 哈尔滨电气动力装备有限公司 | Seal ring friction pair for hydrodynamic mechanical seal of reactor coolant pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7043414B2 (en) | Sliding parts | |
| JP6776232B2 (en) | Sliding parts | |
| US11619308B2 (en) | Sliding components | |
| WO2016186019A1 (en) | Sliding component | |
| CN107269705B (en) | Slide unit | |
| CN112088267B (en) | Sealing ring | |
| JPWO2019013233A1 (en) | Sliding member | |
| RU2011117109A (en) | HORIZONTAL BIT FOR DRILLING HARD ROCKS, HAVING MECHANICAL SEAL WITH EXCELLENT THERMAL CHARACTERISTICS | |
| CN102628338A (en) | Novel roller bit sealing ring | |
| CN100370166C (en) | Wear-resistant mechanical sealing structure on end face | |
| CN201687943U (en) | Lubricating mechanical seal end surface for reverse dynamic pressure tank | |
| CN101825178A (en) | Lubricating mechanical sealing end surface for counter-current dynamical pressure groove | |
| CN107191596A (en) | A kind of non-contact mechanical seal and the seal assembly for preventing lubrication leakage | |
| CN202249772U (en) | Novel roller bit sealing structure | |
| CN201016397Y (en) | End-face mechanically sealing arrangement of controlled zero-revolution opening pressure helical groove | |
| CN201827361U (en) | Reversed current dynamical pressure slot lubrication end surface of mechanical seal | |
| CN101839347A (en) | Reverse dynamic pressure tank lubrication mechanical seal end surface | |
| CN103629357A (en) | Sealing mechanism for vane type rotary valve | |
| CN207906665U (en) | A kind of rotary joint with double flat face seals | |
| CN203730762U (en) | High-pressure large-torque axial seal device | |
| CN203906790U (en) | Mechanical seal with self-lubrication property | |
| CN200978961Y (en) | Thin oil self-operated machine sealing device | |
| CN102619487A (en) | Vibration-preventing high-temperature-resisting underground moving sealing device | |
| CN207945295U (en) | A kind of graphite grazing structure | |
| CN202689941U (en) | Eccentric constant-width seal groove of cone bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100908 |