CN107091329B - A kind of non-font liquid labyrinth seal - Google Patents
A kind of non-font liquid labyrinth seal Download PDFInfo
- Publication number
- CN107091329B CN107091329B CN201710401613.XA CN201710401613A CN107091329B CN 107091329 B CN107091329 B CN 107091329B CN 201710401613 A CN201710401613 A CN 201710401613A CN 107091329 B CN107091329 B CN 107091329B
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- China
- Prior art keywords
- type ring
- sealing assembly
- shell
- ring
- font
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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
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
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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 non-font liquid labyrinth seals, including shell (1), shaft (2), first type ring (31), second type 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
Non- font liquid labyrinth seal.
Technical solution：To achieve the above object, the technical solution adopted by the present invention is：
A kind of non-font 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 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, second type ring (41) is fixedly mounted on shaft (2), and first type ring
(31) be fixedly mounted on shell (1), first type ring (31) include the first non-type ring (32), the first non-type ring (32) at
To setting on shell (1), and second type ring (41) includes the second non-font ring (42), first non-type ring (32) peace
On shell (1), and the second non-font ring (42) is mounted in shaft, and the first non-type ring (32), second non-
Font ring (42) is arranged along shaft radially alternating；Liquid labyrinth area filling has liquid sealant, so that adjacent first
Second non-font ring (42) of the first non-type ring (32) and the second type ring (41) in type ring (31) forms 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
(52) 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).
Preferably：The shell (1) is provided with the interface (11) for injecting liquid sealant.
Preferably：The auxiliary section one (55), auxiliary section two (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 first
Type ring (31), the second type ring (41) are set in the region of liquid labyrinth, then inject liquid sealant in the region of liquid labyrinth,
When the spindle is rotated, since the first type ring (31), the second type ring (41) are mutually twisted, the first non-type ring (32) and the second non-font
The faying face of ring (42) forms a kind of uniformly stable continuous film with viscosity, viscoplasticity or strippable property, in this hair
In bright, interior envelope group is first passed around when being sealed by forming labyrinth channel for the first type ring (31), the second type ring (41)
Part stops the ejection of air-flow, and gas flow is reduced, and a part of air-flow is blocked on the outside of interior sealing assembly, and another part gas
Flow into the region of liquid labyrinth, under the effect of the pressure, it is mobile to push liquid sealant, due to the=the first type ring (31),
Spacing is small (generally below 0.1mm) between second type ring (41), and gas is difficult to push liquid sealant, with the increase of pressure,
Gas gradually pushes liquid sealant, and liquid sealant is walked under the action of air-flow along labyrinth passage, generates labyrinth effect
It answers, due to the effect of labyrinth effect, liquid sealant is heated so that the viscosity of liquid sealant and elasticity are enhanced, liquid
The enhancing of the viscosity and elasticity of body sealant, so that the faying face of the first non-type ring (32) and the second non-font ring (42) was formed
Film toughness is stronger, and air-flow is more difficult to be passed through, when air-flow does manual work and expends energy and break through film, due to the rotation of shaft, the
One non-type ring (32) and the second non-font ring (42) mutually rotate, and 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 the first non-type ring (32) and the second non-font ring (42), so that fraction is close with liquid
Bubble stream is formed between sealing, 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 is formed, the outside sealing assembly of the liquid sealant of high temperature and pressure and interior sealing assembly are mobile, are subtracted
Pressure, in this way, the contact surface between the lip end one (53) of outer sealing assembly and shaft (2) also forms film under the drive of shaft
Sealing, the contact surface between the lip end two (63) of interior sealing assembly and shaft (2) also form diaphragm seal, arrive at and arrive outer sealing assembly
Under the effect of lip end one (53) sealing film, energy further decreases air-flow, and at this time due to the lip end two of interior sealing assembly
(63) contact surface between 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 the first type ring (31), the second type ring (41), is increased 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.Due to further including warning alert unit, the warning alert unit includes thermometer and alarm, the temperature
Meter is set in the region of liquid labyrinth, and the thermometer is connected with alarm, when temperature reaches the alarm temperature of predetermined design
When spending, start alarm equipment alarm, therefore using safe.
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 non-font liquid labyrinth seal, as shown in Figure 1, 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 institute
Interior sealing assembly, outer sealing assembly are stated between shaft 2 and shell 1；The shell 1, shaft 2, outer sealing assembly and interior sealing assembly
Between form liquid labyrinth region, second type ring 41 is fixedly mounted in shaft 2, and first type ring 31 is fixedly mounted
In shell 1, first type ring 31 includes the first non-type ring 32, and the first non-type ring 32 is arranged in pairs on shell 1, and institute
Stating the second type ring 41 includes the second non-font ring 42, and the first non-type ring 32 is mounted on shell 1, and the second non-font
Ring 42 is mounted in shaft, and the first non-type ring 32, the second non-font ring 42 are arranged along shaft radially alternating；The liquid
Labyrinth area filling has liquid sealant, so that of the first non-type ring 32 and the second type ring 41 in the first adjacent type ring 31
Two non-font rings 42 form glue sealing, and the outer sealing assembly includes envelope 1, metallic framework 1, lip end 1, receives
Tight spring 1, auxiliary section 1 and dustproof part 56, the metallic framework 1 are set in envelope 1, and described are matched
Conjunction portion 1 is set between shell 1 and envelope 1, and the lip end 1, dustproof part 56 are set to one 51 phase of envelope
The side of adjacent shaft 2, and the tightening spring 1 is arranged on lip end 1；The interior sealing assembly includes interior capsule two
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 interior envelope
In shell 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 interior envelope
The side of 2 61 adjacent shafts 2 of shell, and the tightening spring 2 64 is arranged on lip end 2 63.The shell 1 is arranged useful
In the interface 11 of injection liquid sealant.The auxiliary section 1, auxiliary section 2 65 are rubber seal.The first non-type ring
32, the number of the second non-font ring 42 is 2.The warning alert unit includes thermometer and alarm, and the thermometer is set
It being placed in the region of liquid labyrinth, the thermometer is connected with alarm, when temperature reaches the alarm temperature of predetermined design,
Start alarm equipment alarm, therefore using safe
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 non-font liquid labyrinth seal, it is characterised in that：Including shell (1), shaft (2), the first type ring (31),
Two type rings (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, second type ring (41) is fixedly mounted on shaft (2), and described the
One type ring (31) is fixedly mounted on shell (1), and first type ring (31) includes the first non-type ring (32), the first non-type ring
(32) it is arranged in pairs on shell (1), and second type ring (41) includes the second non-font ring (42), the first non-type ring
(32) it is mounted on shell (1), and the second non-font ring (42) is mounted in shaft, and the first non-type ring (32),
Second non-font ring (42) is arranged along shaft radially alternating；Liquid labyrinth area filling has liquid sealant, so that adjacent
The first type ring (31) on the first non-type ring (32) and the second non-font ring (42) of the second type ring (41) form glue sealing；Also
Including warning alert unit, the warning alert unit includes thermometer and alarm, and the thermometer is set to liquid labyrinth
In region, the thermometer is connected with alarm.
2. non-font liquid labyrinth seal according to claim 1, it is characterised in that：The shell (1), which is provided with, to be used for
Inject the interface (11) of liquid sealant.
3. non-font liquid labyrinth seal according to claim 1, it is characterised in that：The first non-type ring (32),
The number of two non-font rings (42) is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401613.XA CN107091329B (en) | 2017-05-31 | 2017-05-31 | A kind of non-font liquid labyrinth seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401613.XA CN107091329B (en) | 2017-05-31 | 2017-05-31 | A kind of non-font liquid labyrinth seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107091329A CN107091329A (en) | 2017-08-25 |
| CN107091329B true CN107091329B (en) | 2018-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710401613.XA Active CN107091329B (en) | 2017-05-31 | 2017-05-31 | A kind of non-font liquid labyrinth seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107091329B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US822802A (en) * | 1905-11-24 | 1906-06-05 | Wilkinson Turbine Company | Shaft-packing. |
| GB1438073A (en) * | 1973-01-29 | 1976-06-03 | Commissariat Energie Atomique | Sealing devices for leak-tight shaft ends |
| US4290610A (en) * | 1978-01-04 | 1981-09-22 | Lizogub Vadim A | Labyrinth seal |
| US4451046A (en) * | 1982-10-20 | 1984-05-29 | Dresser Industries, Inc. | Apparatus for sealing between a shaft and housing with multiple land members and seal members |
| 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 |
| CN1077262A (en) * | 1992-04-11 | 1993-10-13 | 大连理工大学 | Choke throttling interactive contactless rotary sealing |
-
2017
- 2017-05-31 CN CN201710401613.XA patent/CN107091329B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US822802A (en) * | 1905-11-24 | 1906-06-05 | Wilkinson Turbine Company | Shaft-packing. |
| GB1438073A (en) * | 1973-01-29 | 1976-06-03 | Commissariat Energie Atomique | Sealing devices for leak-tight shaft ends |
| US4290610A (en) * | 1978-01-04 | 1981-09-22 | Lizogub Vadim A | Labyrinth seal |
| US4451046A (en) * | 1982-10-20 | 1984-05-29 | Dresser Industries, Inc. | Apparatus for sealing between a shaft and housing with multiple land members and seal members |
| 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 |
| CN1077262A (en) * | 1992-04-11 | 1993-10-13 | 大连理工大学 | Choke throttling interactive contactless rotary sealing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107091329A (en) | 2017-08-25 |
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