CN107191598B - A kind of T-type liquid labyrinth seal - Google Patents
A kind of T-type liquid labyrinth seal Download PDFInfo
- Publication number
- CN107191598B CN107191598B CN201710400823.7A CN201710400823A CN107191598B CN 107191598 B CN107191598 B CN 107191598B CN 201710400823 A CN201710400823 A CN 201710400823A CN 107191598 B CN107191598 B CN 107191598B
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- CN
- China
- Prior art keywords
- sealing assembly
- interior
- ring
- shell
- type ring
- 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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- 239000007788 liquid Substances 0.000 title claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 77
- 239000000565 sealant Substances 0.000 claims abstract description 20
- 239000003292 glue Substances 0.000 claims abstract description 5
- 239000002775 capsule Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims 2
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 230000009471 action Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
-
- 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
- F16J15/4472—Labyrinth packings with axial path
- F16J15/4474—Pre-assembled packings
Abstract
The invention discloses a kind of T-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
T-type liquid labyrinth seal.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of T-type liquid labyrinth seal, including shell 1, shaft 2, the first T-type ring 31, the second T-type ring 41, covering group
Part 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
Component is between shaft 2 and shell 1；Liquid labyrinth is formed between the shell 1, shaft 2, outer sealing assembly and interior sealing assembly
Region, the second T-type ring 41 is fixedly mounted in shaft 2, and the first T-type ring 31 is fixedly mounted on shell 1, and described
T prefix between first T-type ring 31 and the second T-type ring 41 is mutually twisted；Liquid labyrinth area filling has liquid sealant,
So that the sealing ring 2 42 of sealing ring 1 and the second T-type ring 41 on the first adjacent T-type ring 31 forms glue sealing, it is described outer
Sealing assembly includes envelope 1, metallic framework 1, lip end 1, tightening spring 1, auxiliary section 1 and dust-proof
Portion 56, the metallic framework 1 is set in envelope 1, and the auxiliary section 1 is set to shell 1 and envelope one
Between 51, the lip end 1, dustproof part 56 are set to the side of one 51 adjacent shafts 2 of envelope, and the tightening spring
One 54 are arranged on lip end 1；The interior sealing assembly includes interior capsule 2 61, metallic framework 2 62, lip end 2 63, receives
Tight spring 2 64, auxiliary section 2 65, the metallic framework 2 62 are set in interior capsule 2 61, and the auxiliary section 2 65 is arranged
Between shell 1 and interior capsule 2 61, the lip end 2 63 is set to the side of interior 2 61 adjacent shafts 2 of capsule, and described
Spring 2 64 is tightened to be arranged on lip end 2 63.
Preferred: the shell 1 is provided with the interface 11 for injecting liquid sealant.
Preferred: the auxiliary section 1, auxiliary section 2 65 are rubber seal.
Preferred: the number of the sealing ring 2 42 of the sealing ring 1 and the second T-type ring 41 of the first T-type ring 31 is 2
It is a.
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, incites somebody to action, the first T-type
Ring 31, the second T-type ring 41 are set in the region of liquid labyrinth, then inject liquid sealant in the region of liquid labyrinth, when turn
Axis rotate when, due to, the first T-type ring 31, the second T-type ring 41 be mutually twisted, the faying face of sealing ring 1 and sealing ring 2 42
A kind of uniformly stable continuous film with viscosity, viscoplasticity or strippable property is formed, in the present invention, by being first
T-type ring 31, the second T-type ring 41 form labyrinth channel, when being sealed, first pass around the ejection that interior sealing assembly stops air-flow,
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 liquid labyrinth
In region, under the effect of the pressure, liquid sealant movement is push, between the=the first T-type ring 31, the second T-type ring 41
Away from small generally below 0.1mm, gas is difficult to push liquid sealant, and with the increase of pressure, gas gradually pushes hydraulic seal
Glue, liquid sealant are walked under the action of air-flow along labyrinth passage, and labyrinth effect is generated, due to the effect of labyrinth effect,
Liquid sealant is heated so that the viscosity of liquid sealant and elasticity are enhanced, viscosity and the elasticity of liquid sealant
Enhancing, so that the film toughness that the faying face of sealing ring 1 and sealing ring 2 42 is formed is stronger, air-flow is more difficult to be passed through, when
When air-flow workmanship consuming energy breaks through film, due to the rotation of shaft, sealing ring 1 and sealing ring 2 42 are mutually rotated, and are formed
New sealing film, this process continue with the rotation of shaft, when air-flow finally goes out liquid labyrinth region, the outer sealing assembly of arrival
When, since air-flow drives liquid sealant to flow in liquid labyrinth, and the phase interaction between sealing ring 1 and sealing ring 2 42
With so that form bubble stream between fraction and liquid sealant, and remaining flowed energy further decreases, due to and liquid
Body sealant forms the liquid sealant of high temperature and pressure under the action of air-flow, and the liquid sealant of high temperature and pressure is to covering group
Part and interior sealing assembly are mobile, are depressurized, in this way, under the drive of shaft, between the lip end 1 and shaft 2 of outer sealing assembly
Contact surface also form diaphragm seal, the contact surface between the lip end 2 63 and shaft 2 of interior sealing assembly also forms diaphragm seal,
It arriving to outer sealing assembly air-flow under the effect of one 53 sealing film of lip end, energy further decreases, and at this time due to interior envelope group
Contact surface between the lip end 2 63 and shaft 2 of part also forms diaphragm seal, so that entering the gas in the region of liquid labyrinth
Body is more difficult, and 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
Under, activity is more preferable, and 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, being set to labyrinth channel using the first T-type ring 31, the second T-type ring 41, the first T-type ring 31, the second T-type ring 41 are increased
Between contact surface, and then the amount that liquid labyrinth area is formed by film is increased, so that air-flow is more difficult to break through sealing element
Sealing, sealing effect are 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 T-type liquid labyrinth seal, as shown in Figure 1, including shell 1, shaft 2, the first T-type ring 31, the second T-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 second T-type ring 41 is fixedly mounted in shaft 2, and the first T-type ring 31 is fixedly mounted outside
Shell 1, and the T prefix between the first T-type ring 31 and the second T-type ring 41 is mutually twisted；Liquid labyrinth area filling has
Liquid sealant, so that the sealing ring 2 42 of sealing ring 1 and the second T-type ring 41 on the first adjacent T-type ring 31 forms glue
Sealing, the outer sealing assembly include envelope 1, metallic framework 1, lip end 1, tightening spring 1, auxiliary section one
55 and dustproof part 56, the metallic framework 1 is set in envelope 1, and the auxiliary section 1 is set to shell 1
Between envelope 1, the lip end 1, dustproof part 56 are set to the side of one 51 adjacent shafts 2 of envelope, and institute
Tightening spring 1 is stated to be arranged on lip end 1；The interior sealing assembly includes interior capsule 2 61, metallic framework 2 62, lip end
Portion 2 63, tightening spring 2 64, auxiliary section 2 65, the metallic framework 2 62 is set in interior capsule 2 61, and the cooperation
Portion 2 65 is set between shell 1 and interior capsule 2 61, and the lip end 2 63 is set to the one of interior 2 61 adjacent shafts 2 of capsule
Side, and the tightening spring 2 64 is arranged on lip end 2 63.The shell 1 is provided with for injecting connecing for liquid sealant
Mouth 11.The auxiliary section 1, auxiliary section 2 65 are rubber seal.Sealing ring 1, the sealing ring of the first T-type ring 31
2 42 number is 2.
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 (4)
1. a kind of T-type liquid labyrinth seal, it is characterised in that: including shell (1), shaft (2), the first T-type ring (31), second
T-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 sealing assembly, outer sealing assembly are 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 second T-type ring (41) is fixedly mounted on shaft (2), and described
First T-type ring (31) is fixedly mounted on shell (1), and the T prefix between the first T-type ring (31) and the second T-type ring (41)
It is mutually twisted；Liquid labyrinth area filling has liquid sealant, so that the sealing ring one on the first adjacent T-type ring (31)
(32) glue sealing is formed with the sealing ring two (42) of the second T-type ring (41), the outer sealing assembly includes envelope one (51), metal
Skeleton one (52), lip end one (53), tightening spring one (54), auxiliary section one (55) and dustproof part (56), the metal bone
Frame one (52) is set in envelope one (51), and the auxiliary section one (55) be set to shell (1) and envelope one (51) it
Between, the lip end one (53), dustproof part (56) are set to the side of envelope one (51) adjacent shafts (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) are set to interior capsule two (61)
It is interior, and the auxiliary section two (65) is set between shell (1) and interior capsule two (61), the lip end two (63) is set to interior
The side of capsule two (61) adjacent shafts (2), and the tightening spring two (64) is arranged on lip end two (63).
2. T-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. T-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.
4. T-type liquid labyrinth seal according to claim 1, it is characterised in that: the sealing ring of the first T-type ring (31)
The number of the sealing ring two (42) of one (32) and the second T-type ring (41) is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400823.7A CN107191598B (en) | 2017-05-31 | 2017-05-31 | A kind of T-type liquid labyrinth seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400823.7A CN107191598B (en) | 2017-05-31 | 2017-05-31 | A kind of T-type liquid labyrinth seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107191598A CN107191598A (en) | 2017-09-22 |
| CN107191598B true CN107191598B (en) | 2019-02-26 |
Family
ID=59876842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710400823.7A Active CN107191598B (en) | 2017-05-31 | 2017-05-31 | A kind of T-type liquid labyrinth seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107191598B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3012916C2 (en) * | 1980-04-02 | 1982-08-26 | Eksperimental'nyj naučno-issledovatel'skij institut metallorežuščich stankov | Labyrinth shaft seal |
| CN2318186Y (en) * | 1997-10-08 | 1999-05-12 | 白德山 | UHMW-PE plastic bearing idler for mine belt conveyor |
| CN200975488Y (en) * | 2006-11-16 | 2007-11-14 | 江苏科行环境工程技术有限公司 | Sealing device used between horizontal rolls milling dynamic and static revolving part |
| CN203189736U (en) * | 2013-03-18 | 2013-09-11 | 南车戚墅堰机车车辆工艺研究所有限公司 | Output shaft sealing device |
| CN103899758B (en) * | 2014-03-04 | 2017-05-24 | 哈尔滨工程大学 | T-shaped staggered-type labyrinth seal capable of eliminating rotor exciting force |
-
2017
- 2017-05-31 CN CN201710400823.7A patent/CN107191598B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107191598A (en) | 2017-09-22 |
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Denomination of invention: A T-shaped liquid labyrinth seal Effective date of registration: 20231103 Granted publication date: 20190226 Pledgee: Bank of Jiangsu Limited by Share Ltd. Zhenjiang branch Pledgor: JIANGSU HOK SEAL MATERIAL Co.,Ltd. Registration number: Y2023980063418 |