CN107084247B - A kind of sealing element - Google Patents
A kind of sealing element Download PDFInfo
- Publication number
- CN107084247B CN107084247B CN201710401485.9A CN201710401485A CN107084247B CN 107084247 B CN107084247 B CN 107084247B CN 201710401485 A CN201710401485 A CN 201710401485A CN 107084247 B CN107084247 B CN 107084247B
- Authority
- CN
- China
- Prior art keywords
- lip end
- sealing assembly
- shell
- ring
- interior
- 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
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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
- F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking 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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
Abstract
The invention discloses a kind of sealing elements, including outer sealing assembly, the outer sealing assembly includes envelope one (51), metallic framework one (52), lip end one (53), it tightens spring one (54), auxiliary section one (55) and dustproof part (56), the metallic framework one (52) is set in envelope one (51), and the auxiliary section one (55) is set between shell (1) and envelope one (51), the 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) is arranged on lip end one (53).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
Sealing element.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of sealing element, including shell 1, shaft 2, the first type ring 31, the second type ring 41, outer sealing assembly and interior envelope group
Part, 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 at shaft
Between 2 and shell 1；Form liquid labyrinth region between the shell 1, shaft 2, outer sealing assembly and interior sealing assembly, described the
Two type rings 41 are fixedly mounted in shaft 2, and first type ring 31 is fixedly mounted on shell 1, and first type ring 31 includes
First blade profile ring 32, the first blade profile ring 32 are arranged in pairs on shell 1, and second type ring 41 includes the second blade profile
Ring and cup type ring, the second blade profile ring are set between each pair of first blade profile ring 32, and the cup type ring be set to it is adjacent
Between two pair of first blade profile ring 32；Liquid labyrinth area filling has liquid sealant, so that in the first adjacent type ring
The sealing of second blade profile annular plastic of the first blade profile ring 32 and the second type ring 41, the outer sealing assembly include envelope 1, gold
Belong to skeleton 1, lip end 1, tightening spring 1, auxiliary section 1 and dustproof part 56, the metallic framework 1 to set
It is placed in envelope 1, and the auxiliary section 1 is set between shell 1 and envelope 1, the lip end 1,
Dustproof part 56 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 sealing assembly includes interior capsule 2 62, metallic framework 2 61, lip end 2 631, lip end 3 632, tightening spring two
641, spring 3 642, auxiliary section 2 65 are tightened, the metallic framework 2 61 is set in interior capsule 2 62, and the cooperation
Portion 2 65 is set between shell 1 and interior capsule 2 62, and the lip end 2 631 is set to interior 2 62 adjacent shafts 2 of capsule
Side, and the tightening spring 2 641 be arranged on lip end 2 631, the lip end 3 632 is set to interior capsule 2 62
The side of adjacent shafts 2, and the tightening spring 3 642 is arranged on lip end 3 632, and the lip end 3 632, lip end
Portion 2 631 is axially arranged along shaft.
Preferred: the shell 1 is provided with the interface 11 for injecting liquid sealant.
Preferred: the auxiliary section 1 is 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 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 generally below between the first type ring 31, the second type ring 41
0.1mm, gas are difficult to push liquid sealant, and with the increase of pressure, gas gradually pushes liquid sealant, liquid sealant
It under the action of air-flow, walks along labyrinth passage, labyrinth effect is generated, due to the effect of labyrinth effect, liquid sealant quilt
Heating, so that the viscosity and elasticity of liquid sealant are enhanced, the enhancing of the viscosity and elasticity of liquid sealant, so that first
The film toughness that the faying face of blade profile ring 32 and sealing ring 2 42 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
Expense energy is 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 2 631 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 2 631 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 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.It further include alarm, controller and pressure sensor, the pressure sensor is set to liquid labyrinth region
It is interior, and the pressure that the pressure sensor measures is sent to controller, controller controls alarm equipment alarm according to pressure signal.
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 sealing element, as shown in Figure 1, include shell 1, shaft 2, the first type ring 31, the second type ring 41, outer sealing assembly with
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
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 two pair of first adjacent blade profile ring 32, the first blade profile ring 32, the second blade profile ring and cup type ring are set along the axial direction of shaft
It sets；Liquid labyrinth area filling has liquid sealant, so that the first blade profile ring 32 in the first adjacent type ring 31 and
The sealing ring 2 42 of two type rings 41 forms glue sealing, 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, the lip end 1, dustproof part 56 are set to covering
The side of one 51 adjacent shafts 2 of shell, and the tightening spring 1 is arranged on lip end 1；The interior sealing assembly includes interior
Capsule 2 62, metallic framework 2 61, lip end 2 631, lip end 3 632, tightening spring 2 641, tightening spring 3 642,
Auxiliary section 2 65, the metallic framework 2 61 are set in interior capsule 2 61, and the auxiliary section 2 65 be set to shell 1 with
Between interior capsule 2 62, the lip end 2 631 is set to the side of interior 2 62 adjacent shafts 2 of capsule, and the tightening bullet
Spring 2 641 is arranged on lip end 2 631, and the lip end 3 632 is set to the side of interior 2 62 adjacent shafts 2 of capsule, 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 direction
Setting.It further include alarm, controller and pressure sensor, the pressure sensor is set in the region of liquid labyrinth, and institute
It states the pressure that pressure sensor measures and is sent to controller, controller controls alarm equipment alarm according to pressure signal.
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 sealing element, 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, outer sealing assembly position
Between shaft (2) and shell (1)；Liquid fan is formed between the shell (1), shaft (2), outer sealing assembly and interior sealing assembly
Palace region, second type ring (41) is fixedly mounted on 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 second blade profile ring and cup type ring, the second blade profile ring is set to each pair of first blade profile ring
(32) between, and the cup type ring is set between two pair of first adjacent blade profile ring (32)；Liquid labyrinth area filling
There is liquid sealant, so that the second blade profile of the first blade profile ring (32) in the first adjacent type ring and the second type ring (41) annular
Plastic sealing, the outer sealing assembly include 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 described
Auxiliary section one (55) is set between shell (1) and envelope one (51), and 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)；In described
Sealing assembly includes 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) are set to interior capsule two (62)
It is interior, 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 on lip end two (631), institute
The side that lip end three (632) is set to interior capsule two (62) adjacent shafts (2) is stated, and the tightening spring three (642) is arranged
On lip end three (632), and the lip end three (632), lip end two (631) are axially arranged along shaft.
2. sealing element according to claim 1, it is characterised in that: the shell (1) is provided with for injecting liquid sealant
Interface (11).
3. sealing element according to claim 1, it is characterised in that: the auxiliary section one (55) is rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401485.9A CN107084247B (en) | 2017-05-31 | 2017-05-31 | A kind of sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401485.9A CN107084247B (en) | 2017-05-31 | 2017-05-31 | A kind of sealing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107084247A CN107084247A (en) | 2017-08-22 |
| CN107084247B true CN107084247B (en) | 2019-10-18 |
Family
ID=59607714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710401485.9A Active CN107084247B (en) | 2017-05-31 | 2017-05-31 | A kind of sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107084247B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1389832A (en) * | 1971-03-18 | 1975-04-09 | Aeroquip Ltd | Seal assemblies |
| JPS54140165U (en) * | 1978-03-23 | 1979-09-28 | ||
| CN86201567U (en) * | 1986-03-17 | 1987-08-26 | 李建新 | Double direction oil-immersed water proof seal |
| US5009435A (en) * | 1989-08-15 | 1991-04-23 | Cummins Engine Company, Inc. | Unitary sealing system with internal venting |
| CN202023925U (en) * | 2011-03-24 | 2011-11-02 | 十堰东森汽车密封件有限公司 | Axel shaft oil seal |
| CN203384361U (en) * | 2013-05-17 | 2014-01-08 | 常州海川卓越密封材料有限公司 | Rotary skeleton anti-leakage sealing ring |
| CN205956392U (en) * | 2016-08-28 | 2017-02-15 | 梁拾战 | Pressure type seal structure |
-
2017
- 2017-05-31 CN CN201710401485.9A patent/CN107084247B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107084247A (en) | 2017-08-22 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210317 Address after: 212400 Caixiang village, Tianwang Town, Jurong City, Zhenjiang City, Jiangsu Province Patentee after: Zhenjiang Lianchuang Machinery Parts Co.,Ltd. Address before: 212400 No.17 Puyi West Road, Puxi industrial concentration area, Tianwang Town, Jurong City, Zhenjiang City, Jiangsu Province Patentee before: JIANGSU HOK SEAL MATERIAL Co.,Ltd. |
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| TR01 | Transfer of patent right |