CN107035869B - A kind of liquid labyrinth seal - Google Patents
A kind of liquid labyrinth seal Download PDFInfo
- Publication number
- CN107035869B CN107035869B CN201710400782.1A CN201710400782A CN107035869B CN 107035869 B CN107035869 B CN 107035869B CN 201710400782 A CN201710400782 A CN 201710400782A CN 107035869 B CN107035869 B CN 107035869B
- Authority
- CN
- China
- Prior art keywords
- sealing assembly
- shell
- interior
- lip end
- liquid
- 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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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
-
- 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
-
- 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
Abstract
The invention discloses a kind of liquid labyrinth seals, including shell (1), shaft (2), first F type ring (31), 2nd F type ring (42), 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
Liquid labyrinth seal.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of liquid labyrinth seal, it is characterised in that: including shell 1, shaft 2, the first F type ring 31, the 2nd F type 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 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 2nd F type ring 41 is fixedly mounted in shaft 2, and the first F type ring 31 is fixedly mounted outside
Shell 1, the first F type ring 31 are mutually twisted with the 2nd F type ring 41, and liquid labyrinth area filling has a liquid sealant, and 41
The outer sealing assembly include envelope 1, metallic framework 1, lip end 1, tightening spring 1, auxiliary section 1 with
And dustproof part 56, the metallic framework 1 are set in envelope 1, and the auxiliary section 1 is set to shell 1 and outer
Between capsule 1, the lip end 1, dustproof part 56 are set to the side of one 51 adjacent shafts 2 of envelope, and the receipts
Tight spring 1 is arranged on lip end 1；The interior sealing assembly includes interior capsule 2 61, metallic framework 2 62, lip end two
631, lip end 3 632, tightening spring 2 641, tightening spring 3 642, auxiliary section 2 65, the metallic framework 2 62 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 2 631 is arranged
In the side of interior 2 61 adjacent shafts 2 of capsule, and the tightening spring 2 641 is arranged on lip end 2 631, the lip end
3 632 are set to the side of interior 2 61 adjacent shafts 2 of capsule, and the tightening spring 3 642 is arranged on lip end 3 632,
And the lip end 3 632, lip end 2 631 are axially arranged along shaft.
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 the first F type
Ring 31, the 2nd F type ring 41 are set in the region of liquid labyrinth, then inject liquid sealant in the region of liquid labyrinth, when turn
When axis rotates, due to the faying face of sealing ring 1 and the 2nd F type ring 41 formed it is a kind of with sticky, viscoplasticity or strippable property
Uniformly stable continuous film, in the present invention, by forming labyrinth channel for the first F type ring 31, the 2nd F type ring 41,
When being sealed, the ejection that interior sealing assembly stops air-flow is first passed around, gas flow is reduced, and a part of air-flow is blocked
On the outside of interior sealing assembly, and another part air-flow enters in the region of liquid labyrinth, under the effect of the pressure, pushes hydraulic seal
Glue is mobile, since the small generally below 0.1mm of spacing, gas are difficult to push liquid close between the first F type ring 31, the 2nd F type ring 41
Sealing, with the increase of pressure, gas gradually pushes liquid sealant, and liquid sealant is under the action of air-flow, along labyrinth
Access walking, generates labyrinth effect, and due to the effect of labyrinth effect, liquid sealant is heated so that the viscous of liquid sealant
Property and elasticity enhanced, liquid sealant viscosity and elasticity enhancing so that the knot of sealing ring 1 and the 2nd F type ring 41
The film toughness that conjunction face is formed is stronger, and air-flow is more difficult to be passed through, when air-flow workmanship, which expends energy, breaks through film, due to shaft
Rotation, sealing ring 1 and the mutually rotation of the 2nd F type ring 41 form new sealing film, this process with shaft rotation
Continue, when air-flow finally goes out liquid labyrinth region, reaches outer sealing assembly, since air-flow drives hydraulic seal in liquid labyrinth
Glue flowing, and the interaction between sealing ring 1 and the 2nd F type ring 41, so that shape between fraction and liquid sealant
At bubble stream, and remaining flowed energy further decreases, due to and it is high to form high temperature under the action of air-flow for liquid sealant
The liquid sealant of pressure, the outside sealing assembly of the liquid sealant of high temperature and pressure and interior sealing assembly are mobile, are depressurized, in this way,
Under the drive of shaft, the contact surface between the lip end 1 and shaft 2 of outer sealing assembly also forms diaphragm seal, interior sealing assembly
Contact surface between lip end 2 631 and shaft 2 also forms diaphragm seal, arrives at close in lip end 1 to outer sealing assembly air-flow
Under sealing film effect, energy is further decreased, and at this time due to the contact between the lip end 2 631 of interior sealing assembly and shaft 2
Face also forms diaphragm seal, so that the gas entered in the region of liquid labyrinth is more difficult, when entering liquid labyrinth region
Interior gas is more, and the function that liquid sealant is done is more, and in the environment of high pressure, activity is more preferable, and viscosity is more excellent, internal gas
Body is more difficult to flee from, and then air-flow can effectively be prevented to exchange with extraneous.In addition, using the first F type ring 31, the 2nd F type ring
41 are set to labyrinth channel, increase the contact surface between the first F type ring 31, the 2nd F type ring 41, and then increase liquid labyrinth
Area is formed by the amount of film, 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 liquid labyrinth seal, as shown in Figure 1, include shell 1, shaft 2, the first F type ring 31, the 2nd F type 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 envelope group
Part, outer sealing assembly are between shaft 2 and shell 1；It is formed between the shell 1, shaft 2, outer sealing assembly and interior sealing assembly
Liquid labyrinth region, the 2nd F type ring 41 is fixedly mounted in shaft 2, and the first F type ring 31 is fixedly mounted on shell
1, the first F type ring 31 is mutually twisted with the 2nd F type ring 41, and liquid labyrinth area filling has liquid sealant, so that
Adjacent sealing ring 1 and the 2nd F type ring 41 form glue sealing, and the outer sealing assembly includes envelope 1, metallic framework one
52, lip end 1, tightening spring 1, auxiliary section 1 and dustproof part 56, the metallic framework 1 are set to covering
In shell 1, and the auxiliary section 1 is set between shell 1 and envelope 1, the lip end 1, dustproof part 56
It is set to the side of one 51 adjacent shafts 2 of envelope, and the tightening spring 1 is arranged on lip end 1；The interior envelope
Component includes interior capsule 2 61, metallic framework 2 62, lip end 2 631, lip end 3 632, tightening spring 2 641, tightening bullet
Spring 3 642, auxiliary section 2 65, the metallic framework 2 62 is set in interior capsule 2 61, and the auxiliary section 2 65 is set to
Between shell 1 and interior capsule 2 61, the lip end 2 631 is set to the side of interior 2 61 adjacent shafts 2 of capsule, and the receipts
Tight spring 2 641 is arranged on lip end 2 631, and the lip end 3 632 is set to the one of interior 2 61 adjacent shafts 2 of capsule
Side, and the tightening spring 3 642 is arranged on lip end 2 631, and the lip end 3 632, lip end 2 631 are along shaft
Axial setting.The shell 1 is provided with the interface 11 for injecting liquid sealant.The auxiliary section 1, auxiliary section 2 65
For 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 liquid labyrinth seal, it is characterised in that: including shell (1), shaft (2), the first F type ring (31), the 2nd F type
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 institute
State interior sealing assembly, outer sealing assembly is located between shaft (2) and shell (1)；The shell (1), shaft (2), outer sealing assembly and
Liquid labyrinth region is formed between interior sealing assembly, the 2nd F type ring (41) is fixedly mounted on shaft (2), and the first F
Type ring (31) is fixedly mounted on shell (1), and the first F type ring (31) is mutually twisted with the 2nd F type ring (41), the liquid fan
Palace area filling has liquid sealant, and the outer sealing assembly includes envelope one (52), metallic framework one (51), lip end one
(53), spring one (54), auxiliary section one (55) and dustproof part (56), the metallic framework one (51) are tightened and is set to covering
In shell one (52), and the auxiliary section one (55) is set between shell (1) and envelope one (52), the lip end one
(53), dustproof part (56) is set to the side of envelope one (52) adjacent shafts (2), and the tightening spring one (54) is arranged
On lip end one (53)；The interior sealing assembly include interior capsule two (62), metallic framework two (61), lip end two (631),
Lip end three (632), tightening spring two (641), tightening spring three (642), auxiliary section two (65), the metallic framework two (61) set
It is placed in interior capsule two (62), and the auxiliary section two (65) is set between shell (1) and interior capsule two (62), the lip
End two (631) is set to the side of interior capsule two (62) adjacent shafts (2), and the tightening spring two (641) is arranged in lip
On end two (631), the lip end three (632) is set to the side of interior capsule two (62) adjacent shafts (2), and the receipts
Tight spring three (642) is arranged on lip end three (632), and the lip end three (632), lip end two (631) are along shaft axis
To setting.
2. liquid labyrinth seal according to claim 1, it is characterised in that: the shell (1) is provided with for injecting liquid
The interface (11) of body sealant.
3. 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 |
|---|---|---|---|
| CN201710400782.1A CN107035869B (en) | 2017-05-31 | 2017-05-31 | A kind of liquid labyrinth seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400782.1A CN107035869B (en) | 2017-05-31 | 2017-05-31 | A kind of liquid labyrinth seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107035869A CN107035869A (en) | 2017-08-11 |
| CN107035869B true CN107035869B (en) | 2019-10-18 |
Family
ID=59540744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710400782.1A Active CN107035869B (en) | 2017-05-31 | 2017-05-31 | A kind of liquid labyrinth seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107035869B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869554A (en) * | 2018-08-31 | 2018-11-23 | 无锡三立轴承股份有限公司 | Bearing seal |
| CN111810484A (en) * | 2020-07-02 | 2020-10-23 | 江苏海川卓越密封材料有限公司 | Leak-proof sealing piece for hydraulic cylinder |
Family Cites Families (7)
| 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 |
| US6467773B1 (en) * | 2000-08-31 | 2002-10-22 | Atlas Copco Comptec Inc. | Liquid 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 CN201710400782.1A patent/CN107035869B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107035869A (en) | 2017-08-11 |
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