CN203627790U - Air sealing device - Google Patents
Air sealing device Download PDFInfo
- Publication number
- CN203627790U CN203627790U CN201320772179.3U CN201320772179U CN203627790U CN 203627790 U CN203627790 U CN 203627790U CN 201320772179 U CN201320772179 U CN 201320772179U CN 203627790 U CN203627790 U CN 203627790U
- Authority
- CN
- China
- Prior art keywords
- outlet pipe
- steam outlet
- oil
- snorkel
- upper chamber
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 54
- 239000003595 mist Substances 0.000 claims abstract description 25
- 239000000779 smoke Substances 0.000 claims description 23
- 230000005484 gravity Effects 0.000 claims description 20
- 230000000694 effects Effects 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 50
- 239000000314 lubricant Substances 0.000 description 9
- 239000000428 dust 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
- 238000000034 method Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging 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
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 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
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses an air sealing device, which is used for seal fit with a rotating shaft. The air sealing device comprises a sealing end cover, and a sealing race, an air feeding device and an oil mist absorbing processor which are fixed to the sealing end cover, wherein the sealing race is provided with an upper chamber and a lower chamber; the air feeding device comprises an air feeding pipe and an air feeding device motor connected with the air feeding pipe; one end of the air feeding pipe is connected to one side of the upper chamber of the sealing race, and the other end is communicated with the outside atmosphere; the oil mist absorbing processor comprises an air outlet pipe, an oil mist absorbing processor motor connected with the air outlet pipe, and an oil mist filter arranged in the air outlet pipe; one end of the air outlet pipe is connected to one side of the lower chamber of the sealing race, and the other end is communicated with the outside atmosphere. The air sealing device can effectively solve the problems of oil shedding, oil leakage, oil mist overflow and the like, is safe to use and has a good sealing effect.
Description
Technical field
The utility model is about a kind of gas sealing mechanism.
Background technique
At present, the large rotating machinery moving is more and more, such as Turbo-generator Set, hydraulic generator unit etc., large rotating machinery equipment is all designed with bearing housing, in bearing housing, need to place a large amount of lubricant oil bearing shell is lubricated to heat radiation, because the place of being association of activity and inertia needs sealing, all adopt at present the forms such as comb-shaped structure, contact seal and labyrinth sealing.
Comb-shaped sealing configuration when design broach and axle between essentially keep certain gap, gap is large, and a large amount of lubricant oil is leaked outside, gap is little, easily and between rotating shaft friction generates heat for broach, affects unit safety operation.
Contact type sealing structure; between sealing tooth and axle, friction can produce heat; the axle temperature degree being rubbed can raise rapidly; the vibrations of axle system strengthen and cause stopping accident; sealing tooth positioning form adopts primary screw position structure; once fixing seal tooth primary screw is loosening, drop in generator, will cause serious accident.
Labyrinth seal structure, adopts filler felt to stop lubricant oil to leak outside.In actual application, also exist some problems, the effect that is difficult to very little play sealing that felt is filled out, it is too many that felt is filled out, press too tightly, in unit high speed operation process, between felt and macro-axis, friction generates heat can produce and Ignition Phenomena, is also difficult to stop lubricant oil to leak outside.All there is the phenomenon that leaks outside in various degree in lubricant oil in the large rotating machinery bearing housing of operation.
Large rotating machinery bearing box oil leakage gets rid of the harm of oil and mist of oil: Diagnosing System for Oil Pump occurs leakage of oil at running middle (center) bearing case, gets rid of oily phenomenon, and thermal power station's unit lubricant oil that leaks outside, is polluted power station surrounding environment, also can breaking out of fire phenomenon.The pollution of generator amature line rod, lead-in wire rotor magnetic pole and rotor spoke is got rid of oil and can be made in the leakage of oil of hydraulic generator unit, and mist of oil and dust, in stator core air duct and the accumulation of rotor magnetic pole air duct place, have a strong impact on generator heat-radiation effect.Unit is because carbon brush, braking brake are not isolated completely with generator, the carbon dust part of generation in service enters in generator, frame, mount holder or support arm surface form black and pile up clc layer, the retaining ring to generator is produced corrosive action by it, makes rotor end bell produce additional stress and cause the harm such as crackle.Mist of oil and dust over time are adsorbed on isolation layer, will cause corrosion to insulation such as generating line rods, decreasing insulating, and accelerated ageing, affects working life of generator.Leakage of oil, to get rid of oily phenomenon be very disadvantageous to the operation of Generator Set, makes in machine turbine oil loss large, causes generator set running environment bad, and need often increase lubricant oil in machine, has increased the workload that running repairs is safeguarded.Also increased the operating cost of unit.Lubricated and the mist of oil leaking outside has also caused severe contamination to river, river course environment.Leakage of oil, the safety of getting rid of oil and mist of oil phenomenon threat generator.
Summary of the invention
The utility model is not tight for large rotating machinery Seal in Bearing Box, and cause and get rid of oil, leakage of oil, and mist of oil effusion problem, comprehensive experience and the achievement of being engaged in for many years related industry for a long time, research and design goes out a kind of gas sealing mechanism of innovation.
For this reason, a kind of gas sealing mechanism of the present utility model, for coordinating with rotating shaft sealing, wherein, comprise end cover, and be fixed on seal holder ring, air supply plant and area from absorbing smoke outwards treatment device on described end cover, the upper chamber that described seal holder ring has and lower chambers; Described air supply plant comprises snorkel and the air supply plant motor being connected with snorkel, and described snorkel one end is connected in a side of the upper chamber of described seal holder ring, and the other end communicates with ambient atmosphere; The area from absorbing smoke outwards treatment device motor that described area from absorbing smoke outwards treatment device comprises steam outlet pipe, be connected with steam outlet pipe and be located at the oil mist filter in described steam outlet pipe, one end of described steam outlet pipe is connected in a side of the lower chambers of seal holder ring, and the other end communicates with ambient atmosphere.
Described gas sealing mechanism, wherein, is provided with gravity one-way valve in described snorkel, in the time that described air supply plant quits work, and snorkel described in described gravity closed check valve; In the time that described air supply plant is started working, described gravity one-way valve is opened described snorkel.
Described gas sealing mechanism, wherein, is provided with gravity one-way valve in described steam outlet pipe, in the time that described area from absorbing smoke outwards treatment device quits work, and steam outlet pipe described in described gravity closed check valve; In the time that described area from absorbing smoke outwards treatment device is started working, described gravity one-way valve is opened described steam outlet pipe.
Described gas sealing mechanism, wherein, the opposite side of described upper chamber is provided with the airtight shrouding for coordinating with described rotating shaft sealing, and 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, and described follower spring is provided with the T-shaped sealing tooth for coordinating with described rotating shaft sealing, and described T-shaped sealing tooth is single or multiple lift.
Described gas sealing mechanism, wherein, also comprises the self-relieving Pneumatic controller of energy, and described Pneumatic controller is arranged in described upper chamber.
The utility model can effectively reduce and gets rid of oil, the problems such as leakage of oil and mist of oil effusion, and use safety, there is good sealing effect.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
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 one-way valve; 7, Pneumatic controller; 8, air supply plant; 8-1, air supply plant motor; 8-2, snorkel; 9, area from absorbing smoke outwards treatment device; 9-1, area from absorbing smoke outwards treatment device motor; 9-2 oil mist filter; 9-3, steam outlet pipe; 10, making-up air device; 11, bolt; 12, inspection hole; 13, disc; 14, rotating shaft.
Embodiment
For shape of the present utility model, structure and feature can be understood better, below will enumerate preferred embodiment and be elaborated by reference to the accompanying drawings.
A kind of gas sealing mechanism of the present utility model, comprises air supply plant 8 and area from absorbing smoke outwards treatment device 9, and described air supply plant 8 comprises snorkel 8-2 and the air supply plant motor 8-1 being connected with snorkel 8-2.The 2-1 of upper chamber that seal holder ring 2 has and lower chambers 2-2.Snorkel 8-2 one end is connected in a side of the 2-1 of upper chamber of seal holder ring 2, supplies gas for the 2-1 of upper chamber for seal holder ring 2, and the other end communicates with ambient atmosphere.Gravity one-way valve 6 is installed in snorkel 8-2, and in the time that described air supply plant 8 quits work, described gravity one-way valve 6 is closed this snorkel 8-2; In the time that described air supply plant 8 is started working, described gravity one-way valve 6 is opened this snorkel 8-2.
The opposite side of the 2-1 of upper chamber 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, is fitted and is closely played seal action by the 2-1 of upper chamber internal air pressure effect and rotating shaft 14.Described T-shaped sealing tooth 4 is multilayer, coordinates with Follow-up seal spring 5, in the time of rotating shaft 14 beat operation, can play good seal action.Pneumatic controller 7 is arranged in seal holder ring 2 2-1 of upper chamber, in the time that air pressure exceeds adjustment range, and Pneumatic controller 7 releasing pressure automaticallies.
Below and the end cover 1 of described air supply plant 8 and seal holder ring 2 are connected and fixed, and described end cover 1 plays the effect of connecting plate.
The area from absorbing smoke outwards treatment device motor 9-1 that area from absorbing smoke outwards treatment device 9 comprises steam outlet pipe 9-3, be connected with steam outlet pipe 9-3 and be located at the oil mist filter 9-2 in described steam outlet pipe 9-3.One end of described steam outlet pipe 9-3 is connected in a side of the lower chambers 2-2 of seal holder ring 2, carries out air-breathing for the lower chambers 2-2 for seal holder ring 2.The other end of described steam outlet pipe 9-3 communicates with ambient atmosphere.Oil mist filter 9-2 connects oil groove, for the oil filtering is sent back in oil groove, gravity one-way valve 6 is installed in steam outlet pipe 9-3, and when area from absorbing smoke outwards treatment device 9 is not worked, gravity one-way valve 6 is closed this steam outlet pipe 9-3.
Below and the end cover 1 of described area from absorbing smoke outwards treatment device 9 and seal holder ring 2 are connected and fixed, and described end cover 1 plays the effect of connecting plate.
End cover 1 is provided with multiple making-up air devices 10, and described making-up air device 10 communicates with oil groove, for keeping oil groove internal and external pressure balance.Adjust seal holder ring bolt 11 and act as, in the time that deviation appears in seal holder ring 2 installations, effectively adjust by this bolt 11.Disc 13 is fixed in rotating shaft, in the time of lubricant oil and the clockwise axle climbing of mist of oil, by disc 13 centrifugal actions, for stoping lubricant oil direct-axis upwards to be climbed.Area from absorbing smoke outwards band structure is similar cellular, can absorb the mist of oil of diffusion, can effectively reduce the generation of mist of oil.Inspection hole 12 is for observing internal state.
Gas sealing mechanism of the present utility model, be provided with A group and B group for air supply plant 8 and area from absorbing smoke outwards treatment device 9, A group is provided with electric automatic control unit, controls two groups of AB and in scheduled time, carries out rotation alternation, A group comprises 8 two of air supply plants, 9 two of area from absorbing smoke outwards treatment device; B group comprises 8 two of air supply plants, 9 two of area from absorbing smoke outwards treatment device.Working condition is as follows: in the time that unit operation is switched on, and the preferential operation of A group after switching on power, B group is wait state, when the operation of A group expires 30 minutes, quits work by main control unit control, connects B group installation's power source simultaneously, B group is started working.After expiring 30 minutes, the work of B group automatically switches to the work of A group, gas sealing mechanism is always wheel and changes jobs, object is to make area from absorbing smoke outwards treatment device 9 smoothly by the mist of oil being drawn onto, by oil mist filter 9-2, the oil being filled into be got back in oil groove, extends the service time of gas sealing mechanism.
In the time that unit operation is switched on, when the air supply plant 8 of gas sealing mechanism is worked, airtight shrouding 3 is heaved with rotating shaft 14 laminatings tight by gas pressure, prevent that mist of oil from overflowing from this.In the time that air pressure exceeds adjustment range, Pneumatic controller 7 releasing pressure automaticallies, ensure seal holder ring 2 2-1 of upper chamber pressure balances.
In the time that air supply plant 8 and area from absorbing smoke outwards treatment device 9 are worked, gravity one-way valve 6 is opened, and while work, all gravity individual event valves 6 are closed, and prevent that mist of oil from overflowing from this position, ensures that gas sealing mechanism entirety can normally move.
The utility model can effectively reduce and gets rid of oil, the problems such as leakage of oil and mist of oil effusion, and use safety, there is good sealing effect.
Illustrative to description of the present utility model above; and it is nonrestrictive; those skilled in the art is understood, and can carry out many amendments, variation or equivalence to it, but they all will fall in protection domain of the present utility model in claim within the spirit limiting and scope.
Claims (6)
1. a gas sealing mechanism, for coordinating with rotating shaft sealing, is characterized in that, comprises end cover, and is fixed on seal holder ring, air supply plant and area from absorbing smoke outwards treatment device on described end cover, and described seal holder ring has upper chamber and lower chambers; Described air supply plant comprises snorkel and the air supply plant motor being connected with snorkel, and described snorkel one end is connected in a side of the upper chamber of described seal holder ring, and the other end communicates with ambient atmosphere; The area from absorbing smoke outwards treatment device motor that described area from absorbing smoke outwards treatment device comprises steam outlet pipe, be connected with steam outlet pipe and be located at the oil mist filter in described steam outlet pipe, one end of described steam outlet pipe is connected in a side of the lower chambers of seal holder ring, and the other end communicates with ambient atmosphere.
2. gas sealing mechanism as claimed in claim 1, is characterized in that, gravity one-way valve is installed in described snorkel, in the time that described air supply plant quits work, and snorkel described in described gravity closed check valve; In the time that described air supply plant is started working, described gravity one-way valve is opened described snorkel.
3. gas sealing mechanism as claimed in claim 1, is characterized in that, gravity one-way valve is installed in described steam outlet pipe, in the time that described area from absorbing smoke outwards treatment device quits work, and steam outlet pipe described in described gravity closed check valve; In the time that described area from absorbing smoke outwards treatment device is started working, described gravity one-way valve is opened described steam outlet pipe.
4. gas sealing mechanism as claimed in claim 1, is characterized in that, the opposite side of described upper chamber is provided with the airtight shrouding for coordinating with described rotating shaft sealing, and described airtight shrouding is single or multiple lift.
5. gas sealing mechanism as claimed in claim 1, is characterized in that, the opposite side of described upper chamber is provided with follower spring, and described follower spring is provided with the T-shaped sealing tooth for coordinating with described rotating shaft sealing, and described T-shaped sealing tooth is single or multiple lift.
6. gas sealing mechanism as claimed in claim 1, is characterized in that, also comprises the self-relieving Pneumatic controller of energy, and described Pneumatic controller is arranged in described upper chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772179.3U CN203627790U (en) | 2013-11-28 | 2013-11-28 | Air sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320772179.3U CN203627790U (en) | 2013-11-28 | 2013-11-28 | Air sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627790U true CN203627790U (en) | 2014-06-04 |
Family
ID=50814271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320772179.3U Expired - Lifetime CN203627790U (en) | 2013-11-28 | 2013-11-28 | Air sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627790U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671922A (en) * | 2013-11-28 | 2014-03-26 | 李荣耀 | Air sealing device |
| CN107178458A (en) * | 2017-07-19 | 2017-09-19 | 国电大渡河瀑布沟发电有限公司 | The comprehensive treatment system and method for a kind of bearing of hydraulic generator mist of oil |
| CN114110169A (en) * | 2021-11-22 | 2022-03-01 | 重庆华能水电设备制造有限公司 | Oil mist overflow prevention air outlet sealing structure of generator |
-
2013
- 2013-11-28 CN CN201320772179.3U patent/CN203627790U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671922A (en) * | 2013-11-28 | 2014-03-26 | 李荣耀 | Air sealing device |
| CN103671922B (en) * | 2013-11-28 | 2016-08-17 | 李荣耀 | Gas sealing mechanism |
| CN107178458A (en) * | 2017-07-19 | 2017-09-19 | 国电大渡河瀑布沟发电有限公司 | The comprehensive treatment system and method for a kind of bearing of hydraulic generator mist of oil |
| CN114110169A (en) * | 2021-11-22 | 2022-03-01 | 重庆华能水电设备制造有限公司 | Oil mist overflow prevention air outlet sealing structure of generator |
| CN114110169B (en) * | 2021-11-22 | 2024-04-26 | 重庆华能水电设备制造有限公司 | Oil mist overflow prevention airtight structure of generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |