CN107152532B - A kind of blade profile liquid labyrinth seal - Google Patents
A kind of blade profile liquid labyrinth seal Download PDFInfo
- Publication number
- CN107152532B CN107152532B CN201710405375.XA CN201710405375A CN107152532B CN 107152532 B CN107152532 B CN 107152532B CN 201710405375 A CN201710405375 A CN 201710405375A CN 107152532 B CN107152532 B CN 107152532B
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- China
- Prior art keywords
- ring
- type ring
- sealing assembly
- blade profile
- shell
- 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
- F16J15/4476—Labyrinth packings with radial 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
- F16J15/32—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
- F16J15/32—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
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
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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
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
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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
Landscapes
- 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 blade profile 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
Blade profile liquid labyrinth seal.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of blade profile liquid labyrinth seal, including shell 1, shaft 2, the first type ring 31, the second 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, 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, second type ring 41 is fixedly mounted in shaft 2, and first type ring 31 is fixedly mounted on shell 1, first type
Ring 31 includes the first blade profile ring 32, and the first blade profile ring 32 is arranged in pairs on shell 1, and second type ring 41 includes the
Two blade profile rings and cup type ring, second type ring 41 is set between each pair of first blade profile ring 32, and the cup type ring is set to
Between adjacent two teams' the first blade profile ring 32；Liquid labyrinth area filling has liquid sealant, so that the first adjacent type
The sealing ring 2 42 of the first blade profile ring 32 and the second type ring 41 on ring 31 forms glue sealing, and the outer sealing assembly includes envelope
One 51, metallic framework 1, lip end 1, tightening spring 1, auxiliary section 1 and dustproof part 56, the metallic framework
One 52 are set in envelope 1, and the auxiliary section 1 is set between shell 1 and envelope 1, the lip end
One 53, dustproof part 56 is set to the side of one 51 adjacent shafts 2 of envelope, and the tightening spring 1 is arranged in lip end one
On 53；The interior sealing assembly includes interior capsule 2 61, metallic framework 2 62, lip end 2 63, tightening spring 2 64, auxiliary section two
65, the metallic framework 2 52 is set in interior capsule 2 61, and the auxiliary section 2 65 is set to shell 1 and interior capsule 2 61
Between, 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 in lip
On 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 first blade profile ring 32 and the second type ring of first 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, by the first type ring
31, the second type ring 41 is set in the region of liquid labyrinth, then injects liquid sealant in the region of liquid labyrinth, when shaft turns
When dynamic, since the first type ring 31, the second type ring 41 are mutually twisted, the faying face of the first blade profile ring 32 and sealing ring 2 42 forms one
Kind there is the uniformly stable continuous film of viscosity, viscoplasticity or strippable property, in the present invention, by for the first type ring
31, the second type ring 41 forms labyrinth channel, when being sealed, first passes around the ejection that interior sealing assembly stops air-flow, gas stream
Amount 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, it is mobile to push liquid sealant, since spacing is small general low between the=the first type ring 31, the second type 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 the
The film toughness that the faying face of one blade profile ring 32 and sealing ring 2 42 is formed is stronger, and air-flow is more difficult to be passed through, when air-flow is done manual work
Energy is expended when breaking through film, and due to the rotation of shaft, the first blade profile ring 32 is mutually rotated with sealing ring 2 42, is formed new close
Sealing film, this process continues with the rotation of shaft, when air-flow finally goes out liquid labyrinth region, reaches outer sealing assembly, by
Liquid sealant is driven to flow in liquid labyrinth in air-flow, and the interaction between the first blade profile ring 32 and sealing ring 2 42,
So that form bubble stream between fraction and liquid sealant, and remaining flowed energy further decreases, due to and liquid
Sealant forms the liquid sealant of high temperature and pressure, the outside sealing assembly of the liquid sealant of high temperature and pressure under the action of air-flow
It is mobile with interior sealing assembly, it is depressurized, in this way, under the drive of shaft, between the lip end 1 and shaft 2 of outer sealing assembly
Contact surface also forms diaphragm seal, and the contact surface between the lip end 2 63 and shaft 2 of interior sealing assembly also forms diaphragm seal, supports
Reaching 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 sealing assembly
Lip end 2 63 and shaft 2 between contact surface also form diaphragm seal so that entering the gas in the region of liquid labyrinth
More difficult, 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 type ring 31, the second type ring 41, increase between the first type ring 31, the second type ring 41
Contact surface, and then increase the amount that liquid labyrinth area is formed by 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 blade profile liquid labyrinth seal, as shown in Figure 1, including shell 1, shaft 2, the first type ring 31, the second 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, second type ring 41 is fixedly mounted in shaft 2, and first type ring 31 is fixedly mounted on shell
1, first type ring 31 includes the first blade profile ring 32, and the first blade profile ring 32 is arranged in pairs on shell 1, and described second
Type ring 41 includes the second blade profile ring and cup type ring, and second type ring 41 is set between each pair of first blade profile ring 32, and described
Cup type ring is set between adjacent two teams' the first blade profile ring 32；Liquid labyrinth area filling has liquid sealant, so that
The sealing ring 2 42 of the first blade profile ring 32 and the second type ring 41 in the first adjacent type ring 31 forms glue sealing, the covering group
Part includes envelope 1, metallic framework 1, lip end 1, tightens spring 1, auxiliary section 1 and dustproof part 56,
The metallic framework 1 is set in envelope 1, and the auxiliary section 1 be set to shell 1 and envelope 1 it
Between, the lip end 1, dustproof part 56 are set to the side of one 51 adjacent shafts 2 of envelope, and the tightening spring 1
It is arranged on lip end 1；The interior sealing assembly includes interior capsule 2 61, metallic framework 2 62, lip end 2 63, tightening bullet
Spring 2 64, auxiliary section 2 65, the metallic framework 2 52 are set in interior capsule 2 61, and the auxiliary section 2 65 is set to outside
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 the tightening
Spring 2 64 is arranged on lip end 2 63.The shell 1 is provided with the interface 11 for injecting liquid sealant.The cooperation
Portion 1, auxiliary section 2 65 are rubber seal.First blade profile ring 32 of first type ring 31, the number of sealing ring 2 42 are
2；It further include cloud system, signal projector and pressure sensor, the pressure sensor is set in the region of liquid labyrinth, and
The pressure that the pressure sensor measures is uploaded in cloud system by signal projector so that it is convenient to which data being transferred and transporting
With.
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 blade profile liquid labyrinth seal, it is characterised in that: including shell (1), shaft (2), the first type ring (31), second
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 with
And liquid labyrinth region is formed between interior sealing assembly, second type ring (41) is fixedly mounted on shaft (2), and described first
Type ring (31) is fixedly mounted on shell (1), and first type ring (31) includes the first blade profile ring (32), the first blade profile ring
(32) it is arranged in pairs on shell (1), and second type ring (41) includes the second blade profile ring and cup type ring, second type ring
(41) be set between each pair of first blade profile ring (32), and the cup type ring be set to adjacent two teams' the first blade profile ring (32) it
Between；Liquid labyrinth area filling has liquid sealant, so that the first blade profile ring (32) in adjacent the first type ring (31)
Glue sealing is formed with the sealing ring two (42) of the second type ring (41), the outer sealing assembly 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) it is set in envelope one (51), and the auxiliary section one (55) is set between shell (1) and envelope one (51), institute
State lip end one (53), dustproof part (56) is set to the side of envelope one (51) adjacent shafts (2), and the tightening spring one
(54) it is arranged on lip end one (53)；The interior sealing assembly includes interior capsule two (61), metallic framework two (62), lip end two
(63), spring two (64), auxiliary section two (65) are tightened, the metallic framework two (62) is set in interior capsule two (61), and institute
It states auxiliary section two (65) to be set between shell (1) and interior capsule two (61), the lip end two (63) is set to interior capsule two
(61) side of adjacent shafts (2), and the tightening spring two (64) is arranged on lip end two (63)；Further include cloud system,
Signal projector and pressure sensor, the pressure sensor are set in the region of liquid labyrinth, and the pressure sensor is surveyed
The pressure obtained is uploaded in cloud system by signal projector.
2. blade profile liquid labyrinth seal according to claim 1, it is characterised in that: the shell (1) is provided with for infusing
Enter the interface (11) of liquid sealant.
3. blade profile liquid labyrinth seal according to claim 1, it is characterised in that: the auxiliary section one (55), auxiliary section
Two (65) are rubber seal.
4. blade profile liquid labyrinth seal according to claim 1, it is characterised in that: the first leaf of first type ring (31)
The number of the sealing ring two (42) of type ring (32) and the second type ring is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710405375.XA CN107152532B (en) | 2017-05-31 | 2017-05-31 | A kind of blade profile liquid labyrinth seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710405375.XA CN107152532B (en) | 2017-05-31 | 2017-05-31 | A kind of blade profile liquid labyrinth seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107152532A CN107152532A (en) | 2017-09-12 |
| CN107152532B true CN107152532B (en) | 2019-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710405375.XA Active CN107152532B (en) | 2017-05-31 | 2017-05-31 | A kind of blade profile liquid labyrinth seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107152532B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3880434A (en) * | 1973-01-29 | 1975-04-29 | Commissariat Energie Atomique | Sealing device for shaft of machines |
| CN86201567U (en) * | 1986-03-17 | 1987-08-26 | 李建新 | Double direction oil-immersed water proof seal |
| US5014998A (en) * | 1988-03-28 | 1991-05-14 | United Conveyor Corporation | Shaft seal |
| CN101245856A (en) * | 2008-03-27 | 2008-08-20 | 济南东方天明机械有限公司 | Bearing sealing device |
| CN104455465A (en) * | 2014-12-12 | 2015-03-25 | 北京凯特破碎机有限公司 | Composite labyrinth sealing device |
-
2017
- 2017-05-31 CN CN201710405375.XA patent/CN107152532B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3880434A (en) * | 1973-01-29 | 1975-04-29 | Commissariat Energie Atomique | Sealing device for shaft of machines |
| CN86201567U (en) * | 1986-03-17 | 1987-08-26 | 李建新 | Double direction oil-immersed water proof seal |
| US5014998A (en) * | 1988-03-28 | 1991-05-14 | United Conveyor Corporation | Shaft seal |
| CN101245856A (en) * | 2008-03-27 | 2008-08-20 | 济南东方天明机械有限公司 | Bearing sealing device |
| CN104455465A (en) * | 2014-12-12 | 2015-03-25 | 北京凯特破碎机有限公司 | Composite labyrinth sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107152532A (en) | 2017-09-12 |
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