CN106246720A - The automatic aligning roller of suppression flow induced vibrations seals structure - Google Patents
The automatic aligning roller of suppression flow induced vibrations seals structure Download PDFInfo
- Publication number
- CN106246720A CN106246720A CN201610836781.7A CN201610836781A CN106246720A CN 106246720 A CN106246720 A CN 106246720A CN 201610836781 A CN201610836781 A CN 201610836781A CN 106246720 A CN106246720 A CN 106246720A
- Authority
- CN
- China
- Prior art keywords
- rotor
- sealing block
- raceway
- shell body
- seals
- 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.)
- Pending
Links
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
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 present invention relates to a kind of automatic aligning roller suppressing flow induced vibrations and seal structure, including sealing block, shell body, rotor, described shell body inner surface has a spherical raceway, the center of curvature of spherical raceway is consistent with center seal, described sealing block outer surface has twice raceway, described sealing block inner surface arranges sealing tooth, seals and forms sealing passage between tooth and rotor, is equipped with two row rollers between twice raceway and the spherical raceway of shell body inner surface of described sealing block.The present invention ensure that fluid exciting force is effectively suppressed when rotor tilt or deflection deformation, seals resist fluids exciting ability and obtains bigger raising.
Description
Technical field
The present invention relates to one be applied in the turbomachineries such as steam turbine, gas turbine, compressor, be to prevent fluid from leaking
And ensure the sealing device of equipment safety operation, a kind of fluid that can effectively suppress turbomachinery inner sealing to cause
Exciting force, the automatic aligning roller improving turbomachinery performance seals structure.
Background technology
Sealing device carries suppression, the guarantee of equipment safety operation and the Technical Economy that fluid in turbomachinery leaks
Height has important effect.Sealing device the most both domestic and external is broadly divided into static seal device and the big class of dynamic sealing device two, and two
The difference of person is between sealed two elements with or without relative motion.But for exciting force produced by mechanical rotary seal
Problem, the most not yet works out effective solution.
The sealing device of rotating machinery can produce exciting force while suppression fluid leakage, has the stability of rotor
Adverse influence.Although researchers have done many effort for weakening the impact of exciting force, such as the base at tradition labyrinth seal
On plinth, the structure sealed by change, it is proposed that honeycomb, brush, derotation stream, damping, helicla flute, ladder, mixing etc. are novel close
Envelope pattern, but produce, owing to above-mentioned fixed sealing can not adjust automatically according to the change of outer work condition, the change adapted,
So the problem that flow induced vibrations cannot be solved.
Along with the birth of the new breakthrough adjustable sealing of Sealing Technology, the thinking of research breaches limitation.Scalable
The concept sealed is proposed the nineties in last century by the U.S., and its main thought is introduced into one gas and flows to seal back, by changing
Become gas pressure and change dynamic and static gaps, thus reach adjustable purpose.Nineteen ninety, GE company of the U.S. have developed by introducing
High steam carrys out the positive seal of Non-follow control sealing block folding.Nineteen ninety-five, Toshiba Corp proposes employing pressure ripple
The adjustable sealing of management and control.But, rotor, in actual rotation process, in addition to having certain bias, there is also a certain amount of
Inclination or flexural deformation, eccentric throw, deflection angle are by change radial force, tangential force and leakage rate in various degree, and affect
The Stability of Periodic Solution of rotor.Due to the existence of problem above, the problem of flow induced vibrations is still without being solved at all.
Summary of the invention
For the problems referred to above, the present invention proposes a kind of automatic aligning roller suppressing flow induced vibrations and seals structure.
The technical scheme is that a kind of automatic aligning roller suppressing flow induced vibrations seals structure, including sealing block,
Shell body, rotor, described shell body inner surface has a spherical raceway, the center of curvature of spherical raceway and center seal one
Causing, described sealing block outer surface has twice raceway, and described sealing block inner surface arranges sealing tooth, seal tooth and rotor it
Between formed seal passage, be equipped with between twice raceway and the spherical raceway of shell body inner surface of described sealing block two row rolling
Son.
When rotor run-off the straight or deflection deformation, described sealing block is subjected to the air-flow power caused by rotor tilt
Effect, deflects automatically, until sealing block is concentric with rotor, air-flow power is zero.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention can compensate the coaxiality error produced due to flexure and the housing distortion of axle automatically, therefore can effectively reduce
The fluid exciting force caused due to rotor tilt or deflection deformation, and then improve sealing resist fluids exciting ability.
Accompanying drawing explanation
Fig. 1 is that the automatic aligning roller of the suppression flow induced vibrations of the present invention seals structure schematic diagram under concentric；
Fig. 2 is that the automatic aligning roller of the suppression flow induced vibrations of the present invention seals structure schematic diagram under rotor tilt state.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of automatic aligning roller suppressing flow induced vibrations seals structure, including sealing block 5, shell body 1,
Roller 3, rotor 7.Shell body 1 inner surface has a spherical raceway 2, and the center of curvature of spherical raceway 2 is consistent with center seal,
Sealing block 5 outer surface has twice raceway 4, and sealing block 5 inner surface arranges sealing tooth 6, is formed close between sealing tooth 6 and rotor 7
Envelope passage, is equipped with two row rollers 3 between twice raceway 4 and the spherical raceway 2 of shell body 1 inner surface of sealing block 5.
As it is shown in figure 1, configuration state when being sealed in concentric, rotor 7 is concentric with sealing block 5 and shell body 1, in this feelings
Under condition, in sealing, fluid exciting force is zero；
As in figure 2 it is shown, be sealed in configuration state when rotor 7 tilts, now sealing block 5 is subjected to rotor 7 and tilts caused
Air-flow power effect, the most automatically deflect, until sealing block 5 is concentric with rotor 7, air-flow power is zero.
It can be seen that compared with sealing with conventional fixed-type, fluid exciting force of the present invention can be suppressed well, this
Bright resist fluids ability of shaking is stronger.
The concrete principle of the sealing structure of the present invention is as follows:
Automatic aligning roller seals has two row rollers, and substantial radial load also can bear the axial of either direction simultaneously
Load.Such sealed outer ring raceway is spheric, and its center of curvature is consistent with bearing centre, when there is flexure in axle, shell,
Can be with automatic regulating load and the axial load in two directions, compensating coaxial degree error, therefore its aligning performance is good.
Claims (2)
1. the automatic aligning roller suppressing flow induced vibrations seals a structure, including sealing block (5), shell body (1), rotor (7),
It is characterized in that: described shell body (1) inner surface has a spherical raceway (2), and the center of curvature of spherical raceway (2) is with close
Envelope center is consistent, and described sealing block (5) outer surface has twice raceway (4), and described sealing block (5) inner surface arranges sealing
Tooth (6), seals and forms sealing passage, the twice raceway (4) of described sealing block (5) and shell body between tooth (6) and rotor (7)
(1) it is equipped with two row rollers (3) between the spherical raceway (2) of inner surface.
The automatic aligning roller of suppression flow induced vibrations the most according to claim 1 seals, it is characterised in that: when rotor (7)
When run-off the straight or deflection deformation, described sealing block (5), by the air-flow power effect caused by rotor (7) inclination, is sent out automatically
Raw deflection, until sealing block (5) is concentric with rotor (7), air-flow power is zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610836781.7A CN106246720A (en) | 2016-09-21 | 2016-09-21 | The automatic aligning roller of suppression flow induced vibrations seals structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610836781.7A CN106246720A (en) | 2016-09-21 | 2016-09-21 | The automatic aligning roller of suppression flow induced vibrations seals structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106246720A true CN106246720A (en) | 2016-12-21 |
Family
ID=57600329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610836781.7A Pending CN106246720A (en) | 2016-09-21 | 2016-09-21 | The automatic aligning roller of suppression flow induced vibrations seals structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106246720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109472055A (en) * | 2018-10-15 | 2019-03-15 | 上海理工大学 | Dynamic characteristic coefficients of seals recognition methods based on maximum likelihood method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1487579A (en) * | 1973-11-12 | 1977-10-05 | Fmc Corp | Roller bearings |
| CN2625639Y (en) * | 2003-05-15 | 2004-07-14 | 西北轴承股份有限公司 | Self aligning roller bearing with novel structure |
| CN1849460A (en) * | 2003-09-17 | 2006-10-18 | 日本精工株式会社 | Self-aligning roller bearing and method of processing the same |
| CN202132382U (en) * | 2011-06-14 | 2012-02-01 | 常州市武进永达机械轴承有限公司 | Self-aligning ball bearing with cylindrical bore |
| CN204175809U (en) * | 2014-03-07 | 2015-02-25 | 浙江正达环保设备有限公司 | A kind of bearing support adopting labyrinth ring seal ring |
| JP2015121236A (en) * | 2013-12-20 | 2015-07-02 | Ntn株式会社 | Self-aligning roller bearing |
-
2016
- 2016-09-21 CN CN201610836781.7A patent/CN106246720A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1487579A (en) * | 1973-11-12 | 1977-10-05 | Fmc Corp | Roller bearings |
| CN2625639Y (en) * | 2003-05-15 | 2004-07-14 | 西北轴承股份有限公司 | Self aligning roller bearing with novel structure |
| CN1849460A (en) * | 2003-09-17 | 2006-10-18 | 日本精工株式会社 | Self-aligning roller bearing and method of processing the same |
| CN202132382U (en) * | 2011-06-14 | 2012-02-01 | 常州市武进永达机械轴承有限公司 | Self-aligning ball bearing with cylindrical bore |
| JP2015121236A (en) * | 2013-12-20 | 2015-07-02 | Ntn株式会社 | Self-aligning roller bearing |
| CN204175809U (en) * | 2014-03-07 | 2015-02-25 | 浙江正达环保设备有限公司 | A kind of bearing support adopting labyrinth ring seal ring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109472055A (en) * | 2018-10-15 | 2019-03-15 | 上海理工大学 | Dynamic characteristic coefficients of seals recognition methods based on maximum likelihood method |
| CN109472055B (en) * | 2018-10-15 | 2023-06-20 | 上海理工大学 | Seal dynamic characteristic coefficient identification method based on maximum likelihood method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161221 |
|
| WD01 | Invention patent application deemed withdrawn after publication |