CN102374293B - Centrifuge dripping type secondary spiral sealing device - Google Patents
Centrifuge dripping type secondary spiral sealing device Download PDFInfo
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- CN102374293B CN102374293B CN 201010257959 CN201010257959A CN102374293B CN 102374293 B CN102374293 B CN 102374293B CN 201010257959 CN201010257959 CN 201010257959 CN 201010257959 A CN201010257959 A CN 201010257959A CN 102374293 B CN102374293 B CN 102374293B
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Abstract
The invention relates to a centrifuge dripping type secondary spiral sealing device for sealing bearing lubricating oil of high-speed rotary equipment. The centrifuge dripping type secondary spiral sealing device mainly comprises inner layers and outer layers of a stationary seal ring 1 and a rotating seal ring 4, wherein an annular oil collection cavity 5 is formed between the two layers; a spiral groove 2 is formed on the outer layer of the stationary seal ring, and a spiral groove 3 is formed on the inner layer of the stationary seal ring; and a centrifugal oil throwing hole 6 which is communicated with a lubricating oil cavity 7 is formed on the rotating seal ring. When equipment runs, the outer layers of the stationary seal ring and the rotating seal ring seal the lubricating oil in the lubricating oil cavity for the first time, then the lubricating oil can flow into the oil collection cavity in the leaking process and is thrown to the lubricating oil cavity by the oil throwing hole under the action of the rotary centrifugal force of the rotating seal ring, and the inner layers of the stationary seal ring and the rotating seal ring seal residual lubricating oil in the oil collection cavity for the second time. The centrifuge dripping type secondary spiral sealing device has the advantages of no leakage, no friction, simple structure, low manufacturing cost, convenience for installation and maintenance and long service life and is suitable to be used by any high-speed rotary equipment on the ground and aircraft engines.
Description
Technical field
The present invention relates to a kind of spiral sealing device, especially relate to a kind of for the sliding oil-tightening centrifuge dripping type secondary spiral sealing device of high-speed rotating equipment bearing.
Background technique
Because common spiral sealing device is poor to the sealing effect of high-speed rotating equipment bearing lubricating oil, at present domestic and international high-speed rotating equipment especially aeroengine all adopts the contact type sealing devices such as expansion ring seale, graphite grazing to be sealed the bearing lubricating oil.But this contact type sealing device complex structure, required precision be very high, need the Special seal material, manufacturability is poor, manufacture cost is high, installation and maintenance are inconvenient, working life is short, simultaneously owing to turning, stator must close contact guarantee sealing requirements, needs the air cavity with certain pressure to carry out auxiliary seal for this reason.In addition, turn, not only there is potential safety hazard in the stator close contact, and have larger surface friction drag, cause the free loss of rotor power.
Summary of the invention
To the objective of the invention is to design a kind of good airproof performance in order addressing the above problem, there is no friction, practical centrifuge dripping type secondary spiral sealing device.
(1) technical problem that will solve
The present invention need to solve the Leakage that the bearing of high-speed rotating equipment is adopted to the non-contact sealing.
(2) technological scheme
In order to solve the problems of the technologies described above, the present invention adopts a kind of centrifuge dripping type secondary spiral sealing device, and is achieved through the following technical solutions:
Centrifuge dripping type secondary spiral sealing device of the present invention mainly is comprised of stationary ring, outer spiral chute, internal layer spiral chute, rotating ring, ring-shaped gathering oil pocket, centrifugal drying oilhole, lubricating cavity, main shaft, oil supply hole, lubricating oil nozzle, bearing, bearing support and spill port etc.
Described stationary ring and rotating ring are divided into two-layer, and the radial clearance between internal layer is between 0.1 millimeter to 0.2 millimeter, and the radial clearance between skin is between 0.15 millimeter to 0.25 millimeter; Annular collection chamber is set between two-layer, and 4-8 the centrifugal drying oilhole be uniformly distributed along the circumference that setting and collection chamber, lubricating cavity connect on rotating ring.For the lubricating oil entered after lubricating bearings in lubricating cavity, to be sealed first by the skin of stationary ring and rotating ring, when lubrication leakage occurring, will all flow in collection chamber, and under the centrifugal action of the rotating ring with the spindle synchronous rotation, through getting rid of oilhole, get rid of back in lubricating cavity, the internal layer of stationary ring and rotating ring carries out secondary seal to collection chamber.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention has advantages of ne-leakage, without friction, the potential safety hazard that does not exist rotor contact with stator, do not consume rotor power, simple in structure, required precision is lower, do not need the Special seal material, good manufacturability, low cost of manufacture, convenient for installation and maintenance, long service life, do not need auxiliary seal, applicable any ground surface high speed rotating equipment and aeroengine use.
The accompanying drawing explanation
The sectional view that Fig. 1 is centrifuge dripping type secondary spiral sealing device of the present invention.
The partial enlarged drawing that Fig. 2 is Fig. 1.
The outer spiral chute 3-of 1-stationary ring 2-internal layer spiral chute 4-rotating ring
5-ring-shaped gathering oil pocket 6-centrifugal drying oilhole 7-lubricating cavity 8-main shaft
9-oil supply hole 10-lubricating oil nozzle 11-bearing 12-bearing support
The 13-spill port
Embodiment
As depicted in figs. 1 and 2, centrifuge dripping type secondary spiral sealing device of the present invention mainly is comprised of stationary ring 1, outer spiral chute 2, internal layer spiral chute 3, rotating ring 4, ring-shaped gathering oil pocket 5, centrifugal drying oilhole 6, lubricating cavity 7, main shaft 8, oil supply hole 9, lubricating oil nozzle 10, bearing 11, bearing support 12 and spill port 13 etc.
Described stationary ring 1 is fixed on bearing support 12, and rotating ring 4 is fixed on main shaft 8.
Described lubricating oil nozzle 10 is fixed on bearing support 12, and lubricating oil nozzle 10 communicates with oil supply hole 9, between oil supply hole 9 and oil feed pump, by oil feed line, is connected.
Described stationary ring 1 and rotating ring 4 are by inside and outside two-layer formation, and the radial clearance between internal layer is between 0.1 millimeter to 0.2 millimeter, and the radial clearance between skin is between 0.15 millimeter to 0.25 millimeter; Between two-layer, an annular collection chamber 5 is arranged, the axial width between annular collection chamber 5 place's stationary rings and rotating ring is 6 millimeters to 15 millimeters; Skin sealing place at stationary ring 1 has spiral chute 2, internal layer sealing place that spiral chute 3 is arranged; 4-8 the centrifugal drying oilhole 6 be uniformly distributed along the circumference connected with annular collection chamber 5 and lubricating cavity 7 arranged on rotating ring 4, and the diameter of centrifugal drying oilhole 6 is 2 millimeters to 4 millimeters, and the angle of centrifugal drying oilhole 6 and main shaft 8 spin axiss is between 60 degree～80 degree.
The working principle of centrifuge dripping type secondary spiral sealing device of the present invention is:
In equipment running process, the lubricating oil oil feed pump, sprays at a high speed through nozzle 10 to oil supply hole 9 fuel feeding by oil feed line, after bearing 11 is lubricated, enter lubricating cavity 7, then be withdrawn in fuel tank by dump pump by the return line be connected with spill port 13, thereby guarantee main shaft 8 High Rotation Speeds.
In to the bearing lubrication process, lubricating oil in lubricating cavity 7 is undertaken after head seal by the skin of the outer spiral chute 2 of stationary ring 1 and rotating ring 4, when lubrication leakage is arranged, will all enter in annular collection chamber 5, and under the rotary centrifugal force effect of the rotating ring 4 with main shaft 8 synchronous rotaries, through getting rid of oilhole 6, get rid of back in lubricating cavity 7, the interior remaining lubricating oil of collection chamber 5 carries out secondary seal by the internal layer spiral chute 3 of stationary ring 1 and the internal layer of rotating ring 4, thereby reaches the purpose that prevents lubrication leakage.
Claims (1)
1. a centrifuge dripping type secondary spiral sealing device, mainly by stationary ring (1) with and on outer spiral chute (2) and internal layer spiral chute (3), rotating ring (4), annular collection chamber (5), centrifugal drying oilhole (6), lubricating cavity (7), main shaft (8), oil supply hole (9), lubricating oil nozzle (10), bearing (11), bearing support (12) and spill port (13) form; It is characterized in that: stationary ring (1) is fixed on bearing support (12), rotating ring (4) is fixed on main shaft (8), stationary ring (1) and rotating ring (4) are by inside and outside two-layer formation, one annular collection chamber (5) is arranged between two-layer, skin sealing place of stationary ring (1) has outer spiral chute (2), internal layer sealing place that internal layer spiral chute (3) is arranged, and 4-8 the centrifugal drying oilhole (6) be uniformly distributed along the circumference connected with annular collection chamber (5), lubricating cavity (7) arranged on rotating ring; The radial clearance of stationary ring (1) and outer sealing place of rotating ring (4) is between 0.15 millimeter to 0.25 millimeter, and the radial clearance of internal layer sealing place is between 0.1 millimeter to 0.2 millimeter; The axial clearance that annular collection chamber (5) is located between stationary ring (1) and rotating ring (4) is 6 millimeters to 15 millimeters; The diameter of the centrifugal drying oilhole (6) on rotating ring (4) is 2 millimeters to 4 millimeters, and centrifugal drying oilhole (6) is 60 degree～80 degree with the angle of main shaft (8) spin axis; Oil supply hole (9) is arranged on bearing support (12), lubricating oil nozzle (10) is fixed on bearing support (12), lubricating oil nozzle (10) communicates with oil supply hole (9), between oil supply hole (9) and lubricating oil oil feed pump, by oil feed line, is connected; Spill port (13) is arranged on stationary ring (1) bottom, with lubricating cavity (7), communicates, and between spill port (13) and lubricating oil dump pump, by return line, is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010257959 CN102374293B (en) | 2010-08-20 | 2010-08-20 | Centrifuge dripping type secondary spiral sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010257959 CN102374293B (en) | 2010-08-20 | 2010-08-20 | Centrifuge dripping type secondary spiral sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102374293A CN102374293A (en) | 2012-03-14 |
| CN102374293B true CN102374293B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010257959 Active CN102374293B (en) | 2010-08-20 | 2010-08-20 | Centrifuge dripping type secondary spiral sealing device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558016B (en) * | 2013-10-25 | 2016-04-20 | 中国航空动力机械研究所 | Full working scope seal test device |
| CN105650282B (en) * | 2014-11-12 | 2017-09-15 | 中国科学院沈阳科学仪器股份有限公司 | One kind centrifugation non-contacting sealing structure |
| CN107859745A (en) * | 2017-10-27 | 2018-03-30 | 合肥常青机械股份有限公司 | A kind of sealing mechanical device of double-deck fluid cooling |
| CN112049923B (en) * | 2020-09-07 | 2022-11-25 | 中国航发贵阳发动机设计研究所 | Lubricating structure with lubricating oil distribution function |
| CN113153913A (en) * | 2021-04-14 | 2021-07-23 | 中国船舶重工集团公司第七0四研究所 | Lubricating and sealing structure of intermediary bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2910313A (en) * | 1958-11-24 | 1959-10-27 | Bour Harry E La | Lubricated seal for centrifugal pump shafts |
| CN2866986Y (en) * | 2005-12-31 | 2007-02-07 | 广西玉柴机器股份有限公司 | Supercharge sealing cover |
| CN101265976A (en) * | 2008-06-10 | 2008-09-17 | 宁波凯特机械有限公司 | Mechanical seal device for a rotary shaft |
| CN201763960U (en) * | 2010-08-20 | 2011-03-16 | 贵州航空发动机研究所 | Centrifuge drying type secondary spiral sealing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5158357B2 (en) * | 2008-06-09 | 2013-03-06 | Ｎｏｋ株式会社 | Sealing device |
-
2010
- 2010-08-20 CN CN 201010257959 patent/CN102374293B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2910313A (en) * | 1958-11-24 | 1959-10-27 | Bour Harry E La | Lubricated seal for centrifugal pump shafts |
| CN2866986Y (en) * | 2005-12-31 | 2007-02-07 | 广西玉柴机器股份有限公司 | Supercharge sealing cover |
| CN101265976A (en) * | 2008-06-10 | 2008-09-17 | 宁波凯特机械有限公司 | Mechanical seal device for a rotary shaft |
| CN201763960U (en) * | 2010-08-20 | 2011-03-16 | 贵州航空发动机研究所 | Centrifuge drying type secondary spiral sealing device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2009-293752A 2009.12.17 |
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| CN102374293A (en) | 2012-03-14 |
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Address after: 550000 No. 602, Yuntan North Road, guanshanhu District, Guiyang City, Guizhou Province Patentee after: AVIC GUIZHOU ENGINE DESIGN INSTITUTE Address before: 550081 No. 58, Yuntan North Road, Jinyang New District, Guiyang City, Guizhou Province Patentee before: GUIZHOU AERONAUTICAL ENGINE INSTITUTE |
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