CN102374293A - Centrifuge dripping type secondary spiral sealing device - Google Patents

Centrifuge dripping type secondary spiral sealing device Download PDF

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Publication number
CN102374293A
CN102374293A CN2010102579595A CN201010257959A CN102374293A CN 102374293 A CN102374293 A CN 102374293A CN 2010102579595 A CN2010102579595 A CN 2010102579595A CN 201010257959 A CN201010257959 A CN 201010257959A CN 102374293 A CN102374293 A CN 102374293A
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CN
China
Prior art keywords
lubricating oil
sealing
seal ring
spiral
ring
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Granted
Application number
CN2010102579595A
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Chinese (zh)
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CN102374293B (en
Inventor
邱兴海
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AVIC GUIZHOU ENGINE DESIGN INSTITUTE
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GUIZHOU AERONAUTICAL ENGINE INSTITUTE
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Priority to CN 201010257959 priority Critical patent/CN102374293B/en
Publication of CN102374293A publication Critical patent/CN102374293A/en
Application granted granted Critical
Publication of CN102374293B publication Critical patent/CN102374293B/en
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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

A kind of centrifuge dripping formula secondary spiral sealing device
Technical field
The present invention relates to a kind of spiral sealing device, especially relate to a kind of centrifuge dripping formula secondary spiral sealing device that is used for the sealing of high-speed rotating equipment bearing lubricating oil.
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 contact type sealing devices such as expansion ring seale, graphite grazing that the bearing lubricating oil is sealed.But this contact type sealing device complex structure, required precision be very high, need the private closure material, manufacturability is poor, manufacture cost is high, installation and maintenance are inconvenient, working life is short; Owing to commentaries on classics, stator must contact closely and could guarantee sealing requirements, the air cavity that for this reason need have certain pressure carries out auxiliary seal simultaneously.In addition, not only there are potential safety hazard in commentaries on classics, the close contact of stator, and have bigger 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, not have friction, practical centrifuge dripping formula secondary spiral sealing device.
The technical problem that (1) will solve
The present invention need solve the leakage of oil problem that the bearing of high-speed rotating equipment is adopted 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 formula secondary spiral sealing device, and realizes through following technological scheme:
Centrifuge dripping formula secondary spiral sealing device of the present invention mainly is made up of stationary ring, outer spiral chute, internal layer spiral chute, rotating ring, ring-like collection chamber, centrifugal oilhole, lubricating oil chamber, main shaft, oil supply hole, lubricating oil nozzle, bearing, bearing support and the spill port etc. of getting rid of.
Described stationary ring and rotating ring are divided into two-layer, and the radial clearance between the internal layer is between 0.1 millimeter to 0.2 millimeter, and the radial clearance between the skin is between 0.15 millimeter to 0.25 millimeter; Annular collection chamber is set between two-layer, and 4-8 the centrifugal oilhole that gets rid of that is uniformly distributed along the circumference that setting and collection chamber, lubricating oil chamber connect on rotating ring.For the lubricating oil that gets into behind the lubricating bearings in the lubricating oil chamber; To seal first by the skin of stationary ring and rotating ring; When the lubricating oil leakage occurring, will all flow in the collection chamber, and under the centrifugal action of the rotating ring that rotates synchronously with main shaft; Get rid of back in the lubricating oil chamber through getting rid of oilhole, the internal layer of stationary ring and rotating ring then carries out secondary seal to collection chamber.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention has ne-leakage, do not have friction, do not have potential safety hazard that rotor contact with stator, do not consume rotor power, simple in structure, required precision is lower, do not need the private closure material, good manufacturability, low cost of manufacture, convenient for installation and maintenance, long service life, do not need advantage, suitable any ground surface high speed rotating equipment and the aeroengine use of auxiliary seal.
Description of drawings
Fig. 1 is the sectional view of centrifuge dripping formula secondary spiral sealing device of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.
The outer spiral chute 3-of 1-stationary ring 2-internal layer spiral chute 4-rotating ring
The centrifugal oilhole 7-lubricating oil chamber 8-main shaft that gets rid of of the ring-like collection chamber 6-of 5-
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 formula secondary spiral sealing device of the present invention mainly is made up of stationary ring 1, outer spiral chute 2, internal layer spiral chute 3, rotating ring 4, ring-like collection chamber 5, centrifugal oilhole 6, lubricating oil chamber 7, main shaft 8, oil supply hole 9, lubricating oil nozzle 10, bearing 11, bearing support 12 and the spill port 13 etc. of getting rid of.
Described stationary ring 1 is fixed on the bearing support 12, and rotating ring 4 is fixed on the main shaft 8.
Described lubricating oil nozzle 10 is fixed on the bearing support 12, and lubricating oil nozzle 10 communicates with oil supply hole 9, is connected through oil feed line between oil supply hole 9 and the oil feed pump.
Spill port 13 is arranged at the bottom of described stationary ring 1, and is connected through return line between the dump pump.
Described stationary ring 1 and rotating ring 4 are by inside and outside two-layer formation, and the radial clearance between the internal layer is between 0.1 millimeter to 0.2 millimeter, and the radial clearance between the 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 the rotating ring is 6 millimeters to 15 millimeters; Outer sealing part at stationary ring 1 has spiral chute 2, internal layer sealing part that spiral chute 3 is arranged; 4-8 the centrifugal oilhole 6 that gets rid of that is uniformly distributed along the circumference that connects with annular collection chamber 5 and lubricating oil chamber 7 arranged on rotating ring 4, and the centrifugal diameter that gets rid of oilhole 6 is 2 millimeters to 4 millimeters, and the centrifugal angle that gets rid of oilhole 6 and main shaft 8 spin axiss is between 60 degree~80 degree.
The working principle of centrifuge dripping formula 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 through oil feed line; After bearing 11 is lubricated; Get into lubricating oil chamber 7, be withdrawn in the fuel tank by dump pump through the return line that links to each other with spill port 13 again, thereby guarantee main shaft 8 high speed rotating.
In to the bearing lubrication process; Lubricating oil in the lubricating oil chamber 7 is undertaken when lubricating oil leaks, will all getting in the annular collection chamber 5 after head seal by the skin of the outer spiral chute 2 of stationary ring 1 and rotating ring 4; And under the rotary centrifugal force effect of the rotating ring 4 that rotates synchronously with main shaft 8; Get rid of back in the lubricating oil chamber 7 through getting rid of oilhole 6, remaining lubricating oil then carries out secondary seal by the internal layer spiral chute 3 of stationary ring 1 and the internal layer of rotating ring 4 in the collection chamber 5, thereby reaches the purpose that prevents that lubricating oil from leaking.

Claims (3)

1. a centrifuge dripping formula secondary spiral sealing device mainly is made up of main shaft (8), bearing (11), bearing support (12), stationary ring (1), rotating ring (4), ring-like collection chamber (5), centrifugal oilhole (6), lubricating oil chamber (7), oil supply hole (9), lubricating oil nozzle (10) and the spill port (13) of getting rid of.It is characterized in that: 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; The outer sealing part of stationary ring (1) has spiral chute (2), internal layer sealing part that spiral chute (3) is arranged, and 4-8 the centrifugal oilhole (6) that gets rid of that is uniformly distributed along the circumference that connects with collection chamber (5) and lubricating oil chamber (7) arranged on the rotating ring.
2. a kind of centrifuge dripping formula secondary spiral sealing device according to claim 1; It is characterized in that: the radial clearance between stationary ring (1) and rotating ring (4) the internal layer sealing part is between 0.1 millimeter to 0.2 millimeter, and the radial clearance between the outer sealing part is between 0.15 millimeter to 0.25 millimeter.
3. centrifuge dripping formula secondary spiral sealing device according to claim 1; It is characterized in that: the axial width that annular collection chamber (5) is located between stationary ring (1) and the rotating ring (4) is 6 millimeters to 15 millimeters; The centrifugal diameter that gets rid of oilhole (6) on the rotating ring (4) is 2 millimeters to 4 millimeters, and the centrifugal angle that gets rid of oilhole (4) and main shaft (8) spin axis is between 60 degree~80 degree.
CN 201010257959 2010-08-20 2010-08-20 Centrifuge dripping type secondary spiral sealing device Active CN102374293B (en)

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 true CN102374293A (en) 2012-03-14
CN102374293B CN102374293B (en) 2013-12-25

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103558016A (en) * 2013-10-25 2014-02-05 中国航空动力机械研究所 Testing rack and all-condition sealing testing device
CN105650282A (en) * 2014-11-12 2016-06-08 中国科学院沈阳科学仪器股份有限公司 Centrifugal non-contact 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

Citations (5)

* Cited by examiner, † Cited by third party
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
JP2009293752A (en) * 2008-06-09 2009-12-17 Nok Corp Sealing device
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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
JP2009293752A (en) * 2008-06-09 2009-12-17 Nok Corp Sealing device
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103558016A (en) * 2013-10-25 2014-02-05 中国航空动力机械研究所 Testing rack and all-condition sealing testing device
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
CN105650282A (en) * 2014-11-12 2016-06-08 中国科学院沈阳科学仪器股份有限公司 Centrifugal non-contact 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

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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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Addressee: Rao Yanglong

Document name: Notification of qualified procedures

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