CN103671922B - Gas sealing mechanism - Google Patents
Gas sealing mechanism Download PDFInfo
- Publication number
- CN103671922B CN103671922B CN201310624907.0A CN201310624907A CN103671922B CN 103671922 B CN103671922 B CN 103671922B CN 201310624907 A CN201310624907 A CN 201310624907A CN 103671922 B CN103671922 B CN 103671922B
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- CN
- China
- Prior art keywords
- escape pipe
- snorkel
- air supply
- oil
- processing means
- 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.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 239000000779 smoke Substances 0.000 claims abstract description 26
- 239000003595 mist Substances 0.000 claims abstract description 23
- 230000005484 gravity Effects 0.000 claims description 20
- 238000000034 method Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 44
- 239000010687 lubricating oil Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000000428 dust Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000036339 tooth positioning Effects 0.000 description 1
- 239000010723 turbine oil Substances 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A kind of gas sealing mechanism, for coordinating with rotating shaft sealing, including end cover, and is fixed on the seal holder ring on described end cover, air supply plant and area from absorbing smoke outwards processing means, and described seal holder ring has upper chamber and lower chambers；Described air supply plant includes snorkel and the air supply plant motor being connected with snorkel, and described snorkel one end is connected to the side of the upper chamber of described seal holder ring, and the other end communicates with ambient atmosphere；Described area from absorbing smoke outwards processing means includes escape pipe, be connected with escape pipe area from absorbing smoke outwards processing means motor and be located at the oil mist filter in described escape pipe, one end of described escape pipe is connected to the side of the lower chambers of seal holder ring, and the other end communicates with ambient atmosphere.The present invention can effectively solve the problem that and gets rid of oil, the problem such as leakage of oil and mist of oil effusion, and uses safety, has good sealing effectiveness.
Description
Technical field
The relevant a kind of gas sealing mechanism of the present invention.
Background technology
At present, the large rotating machinery being currently running gets more and more, such as Turbo-generator Set, hydrogenerator
Groups etc., large rotating machinery equipment is designed with bearing housing, needs to place a large amount of lubricating oil to bearing shell in bearing housing
It is lubricated heat radiation, owing to place of being association of activity and inertia needs to seal, the most all uses comb-tooth-type structure, contact seal
With forms such as labyrinth sealings.
Comb-tooth-type seals structure must keep certain when design gap between comb and axle, and gap is big, makes
Substantial amounts of lubricating oil leaks outside, and gap is little, and comb is easily and between rotating shaft, friction generates heat, affects unit peace
Row for the national games.
Contact type sealing structure, seals friction between tooth and axle and can produce heat, and the axle temperature degree rubbed can be rapidly
Raising, the vibrations increasing of axle system causes stopping accident, seals tooth positioning form and uses primary screw location structure, once
Fixing seal tooth primary screw loosens, and drops to, in electromotor, will result in serious accident.
Labyrinth seal structure, uses filler felt to stop lubricating oil to leak outside.Actual application is also deposited
In some problems, the effect being difficult to play sealing very little that felt is filled out, it is too many that felt is filled out, and presses the tightest,
During unit high-speed cruising, between felt and big axle, friction generates heat can produce and Ignition Phenomena, the most very
Difficult prevention lubricating oil leaks outside.In the large rotating machinery bearing housing run, lubricating oil all exists and leaks outside in various degree
Phenomenon.
Large rotating machinery bearing box oil leakage gets rid of the harm of oil and mist of oil: Diagnosing System for Oil Pump is at running axis
Holding case leakage of oil occur, get rid of oil phenomenon, thermal power station's unit leaks outside lubricating oil, makes power plant surrounding be contaminated,
It also occur that fire phenomena.Oil is got rid of in turbine-generator units leakage of oil can make generator amature bar, lead-in wire rotor magnetic pole
And the pollution of rotor spoke, mist of oil and dust are piled up, sternly at stator core air duct and rotor magnetic pole air duct
Ghost image rings generator heat-radiation effect.Unit is not completely isolated with electromotor, in operation due to carbon brush, braking brake
The carbon dust produced enters partly in electromotor, and frame, mount holder or support arm surface form black and pile up greasy dirt
Layer, it will produce corrosiveness to the retaining ring of electromotor, makes rotor end bell produce additional stress and cause crackle etc.
Harm.Mist of oil and dust over time are adsorbed on the insulating layer, the insulation such as generating bar will be caused corrosion, insulating properties
Can decline, accelerated ageing, affect the service life of electromotor.Leakage of oil, get rid of oil phenomenon to Generator Set
Operation is the most disadvantageous, makes turbine oil loss in machine big, causes generating set running environment bad, need through
Increase lubricating oil in Chang Xiangji, add the workload that ordinary maintenance is safeguarded.Too increase the operating cost of unit.
The lubrication and the mist of oil that leak outside also result in severe contamination to river, river course environment.Leakage of oil, get rid of oil and mist of oil phenomenon
Threaten the safety of electromotor.
Summary of the invention
The present invention is directed to large rotating machinery Seal in Bearing Box tight, cause and get rid of oil, leakage of oil, and mist of oil effusion asks
Topic, comprehensive experience and the achievement being engaged in related industry for a long time for many years, research design goes out the level Hermetic Package of a kind of innovation
Put.
To this end, a kind of gas sealing mechanism of the present invention, for coordinating with rotating shaft sealing, wherein, including sealed end
Lid, and it is fixed on the seal holder ring on described end cover, air supply plant and area from absorbing smoke outwards processing means, described
Upper chamber that seal holder ring has and lower chambers；Described air supply plant includes snorkel and sending of being connected with snorkel
Device of air motor, described snorkel one end is connected to the side of the upper chamber of described seal holder ring, and the other end is with outer
Boundary's air communicates；The area from absorbing smoke outwards processing means that described area from absorbing smoke outwards processing means includes escape pipe, is connected with escape pipe
Motor and be located at the oil mist filter in described escape pipe, one end of described escape pipe is connected to seal holder ring
The side of lower chambers, the other end communicates with ambient atmosphere.
Described gas sealing mechanism, wherein, is provided with gravity check valve in described snorkel, when described dress of supplying gas
Put when quitting work, snorkel described in the described gravity closed check valve in described snorkel；When described dress of supplying gas
Putting when starting working, described snorkel opened by the described gravity check valve in described snorkel.
Described gas sealing mechanism, wherein, is provided with gravity check valve, when described area from absorbing smoke outwards in described escape pipe
When processing means quits work, escape pipe described in the described gravity closed check valve in described escape pipe；When described
When area from absorbing smoke outwards processing means is started working, described escape pipe opened by the described gravity check valve in described escape pipe.
Described gas sealing mechanism, wherein, the opposite side of described upper chamber be provided with for described rotating shaft sealing
The airtight shrouding coordinated, described airtight shrouding is single or multiple lift.
Described gas sealing mechanism, wherein, the opposite side of described upper chamber is provided with follower spring, described servo-actuated
Spring is provided with the T-shaped sealing tooth for coordinating with described rotating shaft sealing, and described T-shaped sealing tooth is monolayer or many
Layer.
Described gas sealing mechanism, wherein, also includes the self-relieving Pneumatic controller of energy, described air pressure control
Device processed is arranged in described upper chamber.
The present invention can effectively reduce and gets rid of oil, the problem such as leakage of oil and mist of oil effusion, and uses safety, has very well
Sealing effectiveness.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 be in Fig. 1 A-A to structure sectional view；
Fig. 3 be in Fig. 1 B-B to structure sectional view；
Fig. 4 be in Fig. 1 E-E to structure sectional view.
Description of reference numerals
1, end cover；2, seal holder ring；2-1, upper chamber；2-2, lower chambers；3, airtight shrouding；4、
T-shaped sealing tooth；5, Follow-up seal spring；6, gravity check valve；7, Pneumatic controller；8, air supply plant；
8-1, air supply plant motor；8-2, snorkel；9, area from absorbing smoke outwards processing means；9-1, area from absorbing smoke outwards processing means
Motor；9-2 oil mist filter；9-3, escape pipe；10, making-up air device；11, bolt；12, inspection hole；
13, disc；14, rotating shaft.
Detailed description of the invention
In order to enable the shape of the present invention, structure and feature to be best understood from, preferable reality below will be enumerated
Execute example and combine accompanying drawing and be described in detail.
A kind of gas sealing mechanism of the present invention, including air supply plant 8 and area from absorbing smoke outwards processing means 9, described in supply gas dress
Put 8 and include snorkel 8-2 and the air supply plant motor 8-1 being connected with snorkel 8-2.Seal holder ring 2 has
Upper chamber 2-1 and lower chambers 2-2.Snorkel 8-2 one end is connected to the side of the upper chamber 2-1 of seal holder ring 2,
Supplying gas for the upper chamber 2-1 for seal holder ring 2, the other end communicates with ambient atmosphere.Snorkel 8-2
Inside being provided with gravity check valve 6, when described air supply plant 8 quits work, described gravity check valve 6 is closed should
Snorkel 8-2；When described air supply plant 8 is started working, this snorkel 8-2 opened by described gravity check valve 6.
The opposite side of upper chamber 2-1 is provided with airtight shrouding 3 and follower spring 5, and described follower spring 5 is provided with
T-shaped sealing tooth 4.Described airtight shrouding 3 is single or multiple lift, by upper chamber 2-1 internal gas pressure effect and rotating shaft
Sealing function is closely played in 14 laminatings.Described T-shaped sealing tooth 4 is multilamellar, coordinates with Follow-up seal spring 5,
Good sealing function can be played when rotating shaft 14 beat runs.Pneumatic controller 7 is arranged on seal holder ring 2
In upper chamber 2-1, when air pressure exceeds adjusting range, Pneumatic controller 7 releasing pressure automatically.
The lower section of described air supply plant 8 and seal holder ring 2 is connected fixing with end cover 1, described end cover 1
Play the effect of connecting plate.
The area from absorbing smoke outwards processing means motor that area from absorbing smoke outwards processing means 9 includes escape pipe 9-3, is connected with escape pipe 9-3
9-1 and be located at the oil mist filter 9-2 in described escape pipe 9-3.One end of described escape pipe 9-3 connects
In the side of lower chambers 2-2 of seal holder ring 2, carry out air-breathing for lower chambers 2-2 for seal holder ring 2.
The other end of described escape pipe 9-3 communicates with ambient atmosphere.Oil mist filter 9-2 connects oil groove, for mistake
The oil of filter sends back in oil groove, is provided with gravity check valve 6, area from absorbing smoke outwards processing means 9 not work in escape pipe 9-3
When making, this escape pipe 9-3 closed by gravity check valve 6.
The lower section of described area from absorbing smoke outwards processing means 9 and seal holder ring 2 is connected fixing with end cover 1, described close
End-blocking lid 1 plays the effect of connecting plate.
End cover 1 is provided with multiple making-up air device 10, and described making-up air device 10 communicates with oil groove, is used for keeping
Oil groove internal and external pressure balance.Adjust seal holder ring bolt 11 to act as, when deviation occurs in seal holder ring 2 installation
Effectively adjusted by this bolt 11.Disc 13 is fixed in rotating shaft, when lubricating oil and the clockwise axle of mist of oil
During climbing, by disc 13 centrifugal action, it is used for stoping lubricating oil direct-axis upwards to be climbed.Area from absorbing smoke outwards band structure
Similar cellular, it is possible to absorb the mist of oil of diffusion, can effectively reduce the generation of mist of oil.Inspection hole 12 is used for seeing
Examine internal state.
The gas sealing mechanism of the present invention, is provided with A group and B group for air supply plant 8 and area from absorbing smoke outwards processing means 9,
A group is provided with electric automatic control unit, controls AB two groups and carries out rotation alternation, A within the time of regulation
Group includes air supply plant 8 two, area from absorbing smoke outwards processing means 9 two；B group includes air supply plant 8 two, oil suction
Mist processing means 9 two.Working condition is as follows: when unit operation is energized, A group preferentially fortune after switching on power
OK, B group is waiting state, runs when A group and expires 30 minutes, controls to quit work by main control unit, with
Time connect B group installation's power source, B group is started working.A group is automatically switched to after B group work expires 30 minutes
Work, gas sealing mechanism is always rotation work, it is therefore intended that make area from absorbing smoke outwards processing means 9 can smoothly by
The mist of oil being drawn onto, returns to the oil being filled in oil groove by oil mist filter 9-2, extends gas sealing mechanism
The use time.
When unit operation is energized, when the air supply plant 8 of gas sealing mechanism works, airtight shrouding 3 passes through air pressure
Effect is heaved and is fitted closely with rotating shaft 14, prevents mist of oil from overflowing at this.When air pressure exceeds adjusting range, gas
Pressure control device 7 releasing pressure automatically, it is ensured that seal holder ring 2 upper chamber 2-1 pressure balance.
When air supply plant 8 and area from absorbing smoke outwards processing means 9 work, gravity check valve 6 is opened, when not working,
All gravity individual event valves 6 are closed, and prevent mist of oil from overflowing from this position, it is ensured that gas sealing mechanism entirety can be normal
Run.
The present invention can effectively reduce and gets rid of oil, the problem such as leakage of oil and mist of oil effusion, and uses safety, has very well
Sealing effectiveness.
The above description of this invention is illustrative and not restrictive, and those skilled in the art understands,
It can be carried out many amendments, change or equivalence within the spirit and scope that claim limits, but they are all
To fall within the scope of protection of the present invention.
Claims (6)
1. a gas sealing mechanism, for coordinating with rotating shaft sealing, it is characterised in that include end cover, with
And it is fixed on the seal holder ring on described end cover, air supply plant and area from absorbing smoke outwards processing means, described seal receptacle
Circle has upper chamber and lower chambers；Described air supply plant and area from absorbing smoke outwards processing means are respectively provided with two groups, described
Air supply plant includes snorkel and the air supply plant motor being connected with snorkel, and described snorkel one end is connected to institute
Stating the side of the upper chamber of seal holder ring, the other end communicates with ambient atmosphere, is provided with gravity in described snorkel
Check valve；Described area from absorbing smoke outwards processing means includes escape pipe, be connected with escape pipe area from absorbing smoke outwards processing means motor,
And it is located at the oil mist filter in described escape pipe, one end of described escape pipe is connected to the cavity of resorption of seal holder ring
The side of room, the other end communicates with ambient atmosphere, is provided with gravity check valve in described escape pipe.
2. gas sealing mechanism as claimed in claim 1, it is characterised in that when described air supply plant quits work
Time, snorkel described in the described gravity closed check valve in described snorkel；When described air supply plant is started working
Time, described snorkel opened by the described gravity check valve in described snorkel.
3. gas sealing mechanism as claimed in claim 1, it is characterised in that when described area from absorbing smoke outwards processing means is stopped
When only working, escape pipe described in the described gravity closed check valve in described escape pipe；When described area from absorbing smoke outwards processes
When device is started working, described escape pipe opened by the described gravity check valve in described escape pipe.
4. gas sealing mechanism as claimed in claim 1, it is characterised in that set on the opposite side of described upper chamber
Having the airtight shrouding for coordinating, described airtight shrouding with described rotating shaft sealing is single or multiple lift.
5. gas sealing mechanism as claimed in claim 1, it is characterised in that set on the opposite side of described upper chamber
Follower spring, described follower spring is had to be provided with the T-shaped sealing tooth for coordinating, described T with described rotating shaft sealing
It is single or multiple lift that type seals tooth.
6. gas sealing mechanism as claimed in claim 1, it is characterised in that also including can self-relieving air pressure
Controlling device, described Pneumatic controller is arranged in described upper chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310624907.0A CN103671922B (en) | 2013-11-28 | 2013-11-28 | Gas sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310624907.0A CN103671922B (en) | 2013-11-28 | 2013-11-28 | Gas sealing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671922A CN103671922A (en) | 2014-03-26 |
| CN103671922B true CN103671922B (en) | 2016-08-17 |
Family
ID=50310332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310624907.0A Active CN103671922B (en) | 2013-11-28 | 2013-11-28 | Gas sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103671922B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883735B (en) * | 2014-04-03 | 2016-07-13 | 张宏伟 | Prevent dynamo bearing from getting rid of oil and the sealing toothing of mist of oil spilling |
| CN104990763A (en) * | 2015-07-28 | 2015-10-21 | 中建商品混凝土西安有限公司 | Concrete stirring station dedicated powder sampling barrel |
| CN107100999B (en) * | 2017-05-27 | 2018-07-03 | 李荣耀 | Mirror oil centrifugal seal device |
| CN108379966A (en) * | 2018-05-09 | 2018-08-10 | 陈勇旭 | Mist of oil automatic processing device |
| CN109442042B (en) * | 2018-10-19 | 2023-10-31 | 杭州加一包装技术有限责任公司 | Mechanical part gas sealing structure used in powder environment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2639528Y (en) * | 2003-07-21 | 2004-09-08 | 东方汽轮机厂 | Bearing box oil seal of steam turbine generator |
| CN201330850Y (en) * | 2008-11-13 | 2009-10-21 | 刘红革 | Follow-up air-lock type sealing device |
| CN202149222U (en) * | 2011-07-06 | 2012-02-22 | 上海丹迪电力技术有限公司 | Direct-blowing type airtight seal oil shield structure |
| CN203214668U (en) * | 2013-05-03 | 2013-09-25 | 江苏金通灵流体机械科技股份有限公司 | Bearing box sealing device |
| CN203258075U (en) * | 2012-12-21 | 2013-10-30 | 尹波 | Dual-seal oil catch device |
| CN203627790U (en) * | 2013-11-28 | 2014-06-04 | 李荣耀 | Air sealing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05263949A (en) * | 1992-01-20 | 1993-10-12 | Toshiba Corp | Shaft sealing device of bearing oil tank |
-
2013
- 2013-11-28 CN CN201310624907.0A patent/CN103671922B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2639528Y (en) * | 2003-07-21 | 2004-09-08 | 东方汽轮机厂 | Bearing box oil seal of steam turbine generator |
| CN201330850Y (en) * | 2008-11-13 | 2009-10-21 | 刘红革 | Follow-up air-lock type sealing device |
| CN202149222U (en) * | 2011-07-06 | 2012-02-22 | 上海丹迪电力技术有限公司 | Direct-blowing type airtight seal oil shield structure |
| CN203258075U (en) * | 2012-12-21 | 2013-10-30 | 尹波 | Dual-seal oil catch device |
| CN203214668U (en) * | 2013-05-03 | 2013-09-25 | 江苏金通灵流体机械科技股份有限公司 | Bearing box sealing device |
| CN203627790U (en) * | 2013-11-28 | 2014-06-04 | 李荣耀 | Air sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103671922A (en) | 2014-03-26 |
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Effective date of registration: 20240315 Address after: Room 301, building a, No.20 Xinghai Road, Pingfang District, Harbin City, Heilongjiang Province Patentee after: Harbin innovation power equipment Co.,Ltd. Country or region after: China Address before: No. 66-4 Xusheng South Street, Xiangfang District, Harbin City, Heilongjiang Province Patentee before: Li Rongyao Country or region before: China |
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