CN106989179B - A kind of F type liquid labyrinth seal - Google Patents
A kind of F type liquid labyrinth seal Download PDFInfo
- Publication number
- CN106989179B CN106989179B CN201710400813.3A CN201710400813A CN106989179B CN 106989179 B CN106989179 B CN 106989179B CN 201710400813 A CN201710400813 A CN 201710400813A CN 106989179 B CN106989179 B CN 106989179B
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- CN
- China
- Prior art keywords
- ring
- sealing assembly
- shell
- interior
- shaft
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4472—Labyrinth packings with axial path
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses a kind of F type liquid labyrinth seals, including shell (1), shaft (2), F type ring (31), dry font ring (41), outer sealing assembly and interior sealing assembly, the interior sealing assembly, outer sealing assembly is set to from inside to outside in shell (1), the shell (1), shaft (2), liquid labyrinth region is formed between outer sealing assembly and interior sealing assembly, liquid labyrinth area filling has liquid sealant, so that adjacent sealing ring one (32) and sealing ring two (42) form glue sealing, structure of the invention and simple, sealing effect is good.
Description
Technical field
The present invention relates to a kind of labyrinth seal more particularly to a kind of steam turbine, gas turbine, compressor, air blowers
Shaft end and grade between liquid labyrinth seal,
Background technique
Labyrinth seal is that several belt sealing teeth being arranged successively are set around shaft, is formed between tooth and tooth a series of
Shut off gap and expansion cavity, and sealed medium generates the mesh that throttle effect reaches Drain Resistance when through the gap in tortuous labyrinth
's.Since, there are gap, no solid contact needn't lubricate between the rotor and casing of labyrinth seal, and allow to have thermal expansion, adapt to
High temperature, high pressure, the occasion of high speed-frequency.But just due to the These characteristics of labyrinth seal, so that it needs high-precision situation
When lower air seal, it is extremely difficult to required precision and sealing effect.
Summary of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, it is good, air tight that the present invention provides a kind of sealing effect
F type liquid labyrinth seal.
Technical solution：To achieve the above object, the technical solution adopted by the present invention is：
A kind of F type liquid labyrinth seal, including shell 1, shaft 2, F type ring 31, dry font ring 41, outer sealing assembly and
Interior sealing assembly, the interior sealing assembly, outer sealing assembly are set to from inside to outside in shell 1, and the interior sealing assembly, covering group
Part is between shaft 2 and shell 1；Liquid labyrinth area is formed between the shell 1, shaft 2, outer sealing assembly and interior sealing assembly
Domain, the dry font ring 41 is fixedly mounted in shaft 2, and the F type ring 31 is fixedly mounted on shell 1, and each does font
Two F type rings 31 are arranged along 2 axial sides of shaft in ring 41, and the sealing ring 1 and F type ring 31 of the dry font ring 41 is close
Seal ring 2 32 is arranged alternately, and liquid labyrinth area filling has liquid sealant, so that adjacent sealing ring 1 and sealing
Ring 2 32 forms glue sealing, and the outer sealing assembly includes envelope 1, metallic framework 1, lip end 1, tightening spring
One 54, auxiliary section 1 and dustproof part 56, the metallic framework 1 is set in envelope 1, and the auxiliary section one
55 are set between shell 1 and envelope 1, and the lip end 1, dustproof part 56 are set to one 51 adjacent shafts of envelope
2 side, and the tightening spring 1 is arranged on lip end 1；The interior sealing assembly includes interior capsule 2 61, metal
Skeleton 2 62, lip end 2 63, tightening spring 2 64, auxiliary section 2 65, the metallic framework 2 52 are set to interior capsule 2 61
It is interior, and the auxiliary section 2 65 is set between shell 1 and interior capsule 2 61, the lip end 2 63 is set to interior capsule 2 61
The side of adjacent shafts 2, and the tightening spring 2 64 is arranged on lip end 2 63.
Preferably：The shell 1 is provided with the interface 11 for injecting liquid sealant.
Preferably：The auxiliary section 1, auxiliary section 2 65 are rubber seal.
The present invention compared with prior art, has the advantages that：
The present invention forms liquid labyrinth region by shell 1, shaft 2, outer sealing assembly and interior sealing assembly, by F type ring 31,
Dry font ring 41 is set in the region of liquid labyrinth, then injects liquid sealant in the region of liquid labyrinth, when shaft rotates
When, since sealing ring 1 is dry font ring 41, sealing ring 2 32 is F type ring 31, the knot of sealing ring 1 and sealing ring 2 32
Conjunction face forms a kind of uniformly stable continuous film with viscosity, viscoplasticity or strippable property, in the present invention, by for
F type ring 31, dry font ring 41 form labyrinth channel, when being sealed, first pass around the ejection that interior sealing assembly stops air-flow, gas
Body flow is reduced, and a part of air-flow is blocked on the outside of interior sealing assembly, and another part air-flow enters liquid labyrinth area
In domain, under the effect of the pressure, liquid sealant movement is push, since spacing is small general low between F type ring 31, dry font ring 41
In 0.1mm, gas is difficult to push liquid sealant, and with the increase of pressure, gas gradually pushes liquid sealant, hydraulic seal
Glue is walked under the action of air-flow along labyrinth passage, labyrinth effect is generated, due to the effect of labyrinth effect, liquid sealant
The viscosity and elasticity for being heated so that liquid sealant are enhanced, the enhancing of the viscosity and elasticity of liquid sealant, so that close
The film toughness that the faying face of seal ring 1 and sealing ring 2 32 is formed is stronger, and air-flow is more difficult to be passed through, and is done manual work and is consumed when air-flow
When expense energy breaks through film, due to the rotation of shaft, sealing ring 1 and sealing ring 2 32 are mutually rotated, and form new sealed thin
Film, this process continues with the rotation of shaft, when air-flow finally goes out liquid labyrinth region, reaches outer sealing assembly, due to gas
Stream drives liquid sealant to flow in liquid labyrinth, and the interaction between sealing ring 1 and sealing ring 2 32, so that portion
Point bubble stream is formed between air-flow and liquid sealant, and remaining flowed energy further decreases, due to and liquid sealant
Under the action of air-flow, the liquid sealant of high temperature and pressure, the outside sealing assembly of the liquid sealant of high temperature and pressure and interior envelope are formed
Component is mobile, is depressurized, in this way, the contact surface under the drive of shaft, between the lip end 1 and shaft 2 of outer sealing assembly
Also diaphragm seal is formed, the contact surface between the lip end 2 63 and shaft 2 of interior sealing assembly also forms diaphragm seal, arrives to outer
Under the effect of one 53 sealing film of lip end, energy further decreases sealing assembly air-flow, and at this time due to the lip end of interior sealing assembly
Contact surface between portion 2 63 and shaft 2 also forms diaphragm seal, so that the gas entered in the region of liquid labyrinth is more tired
Difficulty, when the gas entered in the region of liquid labyrinth is more, the function that liquid sealant is done is more, in the environment of high pressure, lives
Property it is more preferable, viscosity is more excellent, and internal gas is more difficult to flee from, and then air-flow can effectively be prevented to exchange with extraneous.In addition, adopting
It is set to labyrinth channel with F type ring 31, dry font ring 41, increases the contact surface between F type ring 31, dry font ring 41, in turn
The amount that liquid labyrinth area is formed by film is increased, so that air-flow is more difficult to break through the sealing of sealing element, sealing effect is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these examples are merely to illustrate this
It invents rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention various
The modification of equivalent form falls within the application range as defined in the appended claims.
A kind of F type liquid labyrinth seal, as shown in Figure 1, including shell 1, shaft 2, F type ring 31, doing font ring 41, is outer
Sealing assembly and interior sealing assembly, the interior sealing assembly, outer sealing assembly are set to from inside to outside in shell 1, and the interior envelope
Component, outer sealing assembly are between shaft 2 and shell 1；Shape between the shell 1, shaft 2, outer sealing assembly and interior sealing assembly
At liquid labyrinth region, the dry font ring 41 is fixedly mounted in shaft 2, and the F type ring 31 is fixedly mounted on shell 1,
And each dry font ring 41 along 2 axial sides of shaft is arranged two F type rings 31, and the sealing ring 1 of the dry font ring 41 with
The sealing ring 2 42 of F type ring 31 is arranged alternately, and liquid labyrinth area filling has liquid sealant, so that adjacent sealing ring
One 32 form glue sealing with sealing ring 2 42, and the outer sealing assembly includes envelope 1, metallic framework 1, lip end one
53, spring 1, auxiliary section 1 and dustproof part 56, the metallic framework 1 is tightened to be set in envelope 1, and
The auxiliary section 1 is set between shell 1 and envelope 1, and the lip end 1, dustproof part 56 are set to envelope
The side of one 51 adjacent shafts 2, and the tightening spring 1 is arranged on lip end 1；The interior sealing assembly includes interior envelope
Shell 2 61, metallic framework 2 62, lip end 2 63, tightening spring 2 64, auxiliary section 2 65, the metallic framework 2 52 are set to
In interior capsule 2 61, and the auxiliary section 2 65 is set between shell 1 and interior capsule 2 61, and the lip end 2 63 is set to
The side of interior 2 61 adjacent shafts 2 of capsule, and the tightening spring 2 64 is arranged on lip end 2 63.The shell 1 is arranged
There is the interface 11 for injecting liquid sealant.The auxiliary section 1, auxiliary section 2 65 are rubber seal.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of F type liquid labyrinth seal, it is characterised in that：Including shell (1), shaft (2), F type ring (31), dry font ring
(41), outer sealing assembly and interior sealing assembly, the interior sealing assembly, outer sealing assembly are set to from inside to outside in shell (1), and described
Interior sealing assembly, outer sealing assembly are located between shaft (2) and shell (1)；The shell (1), shaft (2), outer sealing assembly and interior
Liquid labyrinth region is formed between sealing assembly, the dry font ring (41) is fixedly mounted on shaft (2), and the F type ring
(31) it is fixedly mounted on shell (1), and each does font ring (41) and two F type rings (31) are set along shaft (2) axial sides, and
The sealing ring one (42) of the dry font ring (41) and the sealing ring two (32) of F type ring (31) are arranged alternately, the liquid labyrinth
Area filling has liquid sealant, so that adjacent sealing ring one (42) and sealing ring two (32) form glue sealing, the covering
Component includes envelope one (51), metallic framework one (52), lip end one (53), tightening spring one (54), auxiliary section one (55)
And dustproof part (56), the metallic framework one (52) are set in envelope one (51), and the auxiliary section one (55) is arranged
Between shell (1) and envelope one (51), the lip end one (53), that dustproof part (56) is set to envelope one (51) is adjacent
The side of shaft (2), and the tightening spring one (54) is arranged on lip end one (53)；The interior sealing assembly includes interior capsule
Two (61), metallic framework two (62), lip end two (63), tightening spring two (64), auxiliary section two (65), the metallic framework two
(62) it is set in interior capsule two (61), and the auxiliary section two (65) is set between shell (1) and interior capsule two (61), institute
The side that lip end two (63) is set to interior capsule two (61) adjacent shafts (2) is stated, and the tightening spring two (64) setting exists
On lip end two (63).
2. F type liquid labyrinth seal according to claim 1, it is characterised in that：The shell (1) is provided with for injecting
The interface (11) of liquid sealant.
3. F type liquid labyrinth seal according to claim 1, it is characterised in that：The auxiliary section one (55), auxiliary section two
It (65) is rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400813.3A CN106989179B (en) | 2017-05-31 | 2017-05-31 | A kind of F type liquid labyrinth seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400813.3A CN106989179B (en) | 2017-05-31 | 2017-05-31 | A kind of F type liquid labyrinth seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106989179A CN106989179A (en) | 2017-07-28 |
| CN106989179B true CN106989179B (en) | 2018-11-20 |
Family
ID=59421357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710400813.3A Active CN106989179B (en) | 2017-05-31 | 2017-05-31 | A kind of F type liquid labyrinth seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106989179B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB444814A (en) * | 1933-10-04 | 1936-03-26 | Escher Wyss Maschf Ag | Labyrinth packing for rotating parts of machinery, particularly parts of steam and gas turbines |
| US4304409A (en) * | 1979-06-11 | 1981-12-08 | Inpro, Inc. | Sealing assembly |
| DE3026877C2 (en) * | 1980-07-16 | 1983-06-09 | Herbert Hänchen KG, 7302 Ostfildern | Low friction seal |
| US4533148A (en) * | 1984-10-04 | 1985-08-06 | Lindahl Lemoyne | Sealing ring assembly for use in pulp refining equipment |
| US4743034A (en) * | 1987-03-27 | 1988-05-10 | Durametallic Corporation | Labyrinth bearing protector seal |
| CN100436850C (en) * | 2002-10-03 | 2008-11-26 | 奥依列斯工业株式会社 | Sliding bearing |
-
2017
- 2017-05-31 CN CN201710400813.3A patent/CN106989179B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106989179A (en) | 2017-07-28 |
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