CN108799505A - It is a kind of to tooth labyrinth type device for sealing magnetic fluid - Google Patents
It is a kind of to tooth labyrinth type device for sealing magnetic fluid Download PDFInfo
- Publication number
- CN108799505A CN108799505A CN201811017089.7A CN201811017089A CN108799505A CN 108799505 A CN108799505 A CN 108799505A CN 201811017089 A CN201811017089 A CN 201811017089A CN 108799505 A CN108799505 A CN 108799505A
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- Prior art keywords
- pole
- magnetism
- ring
- tooth
- magnet ring
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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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
-
- 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
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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 present invention relates to a kind of to tooth labyrinth type device for sealing magnetic fluid, including shell, interior pole shoe ring, outer pole shoe ring, magnet ring I, magnet ring II；The interior pole shoe ring is sleeved on axis；The outer pole shoe ring is installed on the inner wall of shell, is oppositely arranged with interior pole shoe ring；Axially spaced be arranged alternately between multiple pole I and pole II, the pole I and its adjacent pole II is equipped with magnet ring I in the interior pole shoe ring；It is above axially spaced in the outer pole shoe ring to be arranged alternately multiple pole III and pole IV, magnet ring II is equipped between the pole III and its adjacent pole IV；The magnet ring and permanent magnet II is oppositely arranged, and there are gaps between magnet ring and permanent magnet II；The pole I and pole IV is equipped with pole tooth.The present invention can solve the problems, such as existing sealing device, and there are shaft bias to influence sealing device pressure resistance performance.
Description
Technical field
The invention belongs to sealing field of mechanical engineering, and in particular to a kind of to tooth labyrinth type device for sealing magnetic fluid.
Background technology
In large-diameter rotary shaft magnetic fluid sealing, due to the influence of the factors such as process and assemble error, vibration, shaft phase
Bias can be occurred for pole shoe, it will reduce the pressure-resistant performance of magnetic fluid sealing, therefore improve wide arc gap magnetic fluid seal
Pressure-resistant performance be one of hot issue of current research.
It is by improving magnetic fluid to one of the method for influence of magnetic fluid sealing pressure resistance performance to reduce shaft bias
Sealing structure, the sealing device as described in documents 1 (patent of Publication No. CN 103115152A).Although document above
The relatively common magnetic fluid seal performance of the sealing device is greatly improved, but its sealing device is not considered
The influence of Shaft Eccentricity On The Capacity of Magnetic Fluid Seals Against Pressure Difference performance.
Invention content
The object of the present invention is to provide a kind of to tooth labyrinth type split-type device for sealing magnetic fluid, to solve existing sealing
Device influences the problem of sealing device pressure resistance performance there are shaft bias so that the sealing technique Successful utilization is in large-diameter
In high-speed rotating occasion.
Technical scheme is as follows：
It is described to tooth labyrinth type device for sealing magnetic fluid, including shell, interior pole shoe ring, outer pole shoe ring, magnet ring I, permanent magnetism
Body ring II；
The interior pole shoe ring is sleeved on axis；The outer pole shoe ring is installed on the inner wall of shell, opposite with interior pole shoe ring
Setting；
It is axially spaced in the interior pole shoe ring to be arranged alternately multiple pole I and pole II, the pole I is adjacent with its
It is annular groove I between pole II；Magnet ring I is equipped in the annular groove I；The height of the pole I is higher than pole II；
In the outer pole shoe ring it is upper it is axially spaced be arranged alternately multiple pole III and pole IV, the pole III and its
It is annular groove II between adjacent pole IV；Magnet ring II is equipped in the annular groove II；The height of the pole III is less than
Pole IV；
The magnet ring I and permanent magnet II is oppositely arranged, and there are gaps between magnet ring and permanent magnet II；Described
Pole I is oppositely arranged with pole III, and the periphery of pole I is equipped with pole tooth I, and the pole tooth I is radially to pole III's
Inner headed face extends, and there are gap between the inner headed face of pole III, filling magnetic fluid is sealed in the gap；The pole
Column II is oppositely arranged with pole IV, and the inner headed face of pole IV is equipped with pole tooth II, and the pole tooth II is radially to pole II's
Periphery extends, and there are gap between the periphery of pole II, filling magnetic fluid is sealed in the gap.
The quantity for the pole tooth I being arranged on the periphery of the pole I is 1-10, on the inner headed face of the pole IV
The quantity of the pole tooth II of setting is 1-10.
The quantity of the annular groove I and the magnet ring I in annular groove I be ~；The annular groove II and it is set to annular groove II
Interior magnet ring II corresponds to quantity and the position setting of annular groove I and the magnet ring I in annular groove I.
The size in the gap between the pole tooth I and the inner headed face of pole III is ~ mm；The pole tooth II and pole
The size in the gap between the periphery of II is 0.05. ~ 3mm.
The magnet ring I and magnet ring II is axial charging type permanent magnet.
The magnetic line of force direction of mutual corresponding magnet ring I and magnet ring II is opposite；Two adjacent magnet ring I it
Between magnetic line of force direction it is opposite；Magnetic line of force direction between two adjacent magnet ring II is opposite.
The periphery at the outer pole shoe ring both ends is equipped with groove, and sealing ring is equipped in the groove.
It is described to tooth labyrinth type device for sealing magnetic fluid, further include the first from left magnetism-isolating loop, the second from left magnetism-isolating loop, the right side one every magnetic
Ring, right two magnetism-isolating loops；The first from left magnetism-isolating loop and a right magnetism-isolating loop are set on axis on the inner wall of shell, and the first from left is every magnetic
Ring is located at the left side of interior pole shoe ring, and a right magnetism-isolating loop is located at the right side of interior pole shoe ring；The second from left magnetism-isolating loop and the right side two every
Magnet ring is set on the inner wall of shell, and the second from left magnetism-isolating loop is located at the left side of outer pole shoe ring, and right two magnetism-isolating loops are located at the right side of outer pole shoe ring
Side.
It is described to tooth labyrinth type device for sealing magnetic fluid, further include left bearing and right bearing；The left bearing and the right side
Bearing is set on axis, and the left bearing is set to the first from left magnetism-isolating loop, the second from left magnetism-isolating loop left side, respectively with the first from left every magnetic
Ring, the contact of the second from left magnetism-isolating loop；The right bearing is set to the right side of a right magnetism-isolating loop, right two magnetism-isolating loops, respectively with the right side one every magnetic
Ring and right two magnetism-isolating loops contact.
The present invention is designed pole tooth in upper pole shoe and lower pole by the way that permanent magnet is embedded in the groove of upper pole shoe and lower pole shoe
On the axial direction of boots, magnetic fluid is injected in the radial seal gap of upper pole shoe and lower pole shoe, it is a kind of to tooth fan to realize
Palace type split-type device for sealing magnetic fluid.Also, adjacent pole tooth magnet fluid sealing height is staggered, and advantageously reduces in this way
Magnetic current bulk diffusion improves its self-reparing capability.
The present invention can overcome the problems, such as that in the case of shaft bias sealing performance can decline existing sealing device, adopt
It is designed with to tooth type structures, reduces influence of the shaft bias to sealing device pressure resistance performance, improve magnetic under the conditions of large-diameter
The voltage endurance capability and sealing reliability of property Fluid Sealing, expand its range of safety operation.
Description of the drawings
Fig. 1 is the structural schematic diagram provided in an embodiment of the present invention to tooth labyrinth type device for sealing magnetic fluid；
Each serial number mark and corresponding title are as follows in figure：
1- axis, 2- shells, pole shoe ring in 3-, the outer pole shoe rings of 4-, 5- magnet rings I, 6- magnet ring II, 7- pole I, 8- pole
II, 9- pole III, 10- pole IV, the poles 11- tooth I, the poles 12- tooth II, 13- sealing rings, 14- the first from left magnetism-isolating loops, 15- the second from left is every magnetic
The right magnetism-isolating loop of ring, 16-, right two magnetism-isolating loops of 17-, 18- left bearings, 19- right bearings, 20- end caps.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, described to tooth labyrinth type device for sealing magnetic fluid, including shell 2, interior pole shoe ring 3, outer pole shoe ring
4, magnet ring I5, magnet ring II6；
The interior pole shoe ring 3 is sleeved on axis 1；The outer pole shoe ring 4 is installed on the inner wall of shell 2, with interior pole shoe ring 3
It is oppositely arranged；
It is axially spaced in the interior pole shoe ring 3 to be arranged alternately multiple pole I7 and pole II8, the pole I7 and its phase
It is annular groove I between adjacent pole II8；Magnet ring I5 is equipped in the annular groove I；The height of the pole I7 is higher than pole
II8；
It is above axially spaced in the outer pole shoe ring 4 to be arranged alternately multiple pole III9 and pole IV 10, the pole
It is annular groove II between III9 and its adjacent pole IV 10；Magnet ring II6 is equipped in the annular groove II；The pole
The height of III9 is less than pole IV 10；
The magnet ring I5 and permanent magnet II6 is oppositely arranged, and there are gaps between magnet ring 5 and permanent magnet II6；Institute
The pole I7 stated and pole III9 is oppositely arranged, and the periphery of pole I7 is equipped with pole tooth I11, and the pole tooth I11 is radially
Extend to the inner headed face of pole III9, there are gap between the inner headed face of pole III9, filling magnetic fluid carries out in the gap
Sealing；The pole II8 is oppositely arranged with pole IV 10, and the inner headed face of pole IV 10 is equipped with pole tooth II12, the pole
Tooth II12 radially extends to the periphery of pole II8, there are gap between the periphery of pole II8, is filled in the gap
Magnetic fluid is sealed.
The quantity for the pole tooth I11 being arranged on the periphery of the pole I7 is 1-10, the pole IV 10 it is interior
The quantity for the pole tooth II12 being arranged on disc is 1-10.
The quantity of the annular groove I and the magnet ring I5 in annular groove I are 4 ~ 20；The annular groove II and it is set to ring
Magnet ring II6 in slot II corresponds to quantity and the position setting of annular groove I and the magnet ring I5 in annular groove I.
The size in the gap between the pole tooth I11 and the inner headed face of pole III9 is 0.05 ~ 3mm；The pole tooth
The size in the gap between II12 and the periphery of pole II8 is 0.05 ~ 3mm.
The magnet ring I5 and magnet ring II6 is axial charging type permanent magnet.
The magnetic line of force direction of mutual corresponding magnet ring I5 and magnet ring II6 is opposite；Two adjacent magnet rings
Magnetic line of force direction between I5 is opposite；Magnetic line of force direction between two adjacent magnet ring II6 is opposite.
The periphery at 4 both ends of outer pole shoe ring is equipped with groove, and sealing ring 13 is equipped in the groove.
It is described to tooth labyrinth type device for sealing magnetic fluid, further include the first from left magnetism-isolating loop 14, the second from left magnetism-isolating loop 15, the right side one every
Magnet ring 16, right two magnetism-isolating loops 17；The first from left magnetism-isolating loop 14 and a right magnetism-isolating loop 16 are set on axis 1 set on the interior of shell 2
On wall, the first from left magnetism-isolating loop 14 is located at the left side of interior pole shoe ring 3, and a right magnetism-isolating loop 16 is located at the right side of interior pole shoe ring 3；Described
The second from left magnetism-isolating loop 15 and right two magnetism-isolating loops 17 are set on the inner wall of shell 2, and the second from left magnetism-isolating loop 15 is located at the left side of outer pole shoe ring 4,
Right two magnetism-isolating loops 17 are located at the right side of outer pole shoe ring 4.
It is described to tooth labyrinth type device for sealing magnetic fluid, further include left bearing 18 and right bearing 19；The left bearing
18 and right bearing 19 be set on axis 1, the left bearing 18 is set to the first from left magnetism-isolating loop 14,15 left side of the second from left magnetism-isolating loop,
It is contacted respectively with the first from left magnetism-isolating loop 14, the second from left magnetism-isolating loop 15；The right bearing 19 is set to a right magnetism-isolating loop 16, right two magnetism-isolating loops
17 right side is contacted with a right magnetism-isolating loop 16 and right two magnetism-isolating loops 17 respectively.
2 right end of shell is equipped with end cap 20.
Claims (9)
1. a kind of to tooth labyrinth type device for sealing magnetic fluid, including shell（2）, interior pole shoe ring（3）, outer pole shoe ring（4）, permanent magnet
Ring I（5）, magnet ring II（6）, it is characterised in that：
The interior pole shoe ring（3）It is sleeved on axis（1）On；The outer pole shoe ring（4）It is installed on shell（2）Inner wall on, with
Interior pole shoe ring（3）It is oppositely arranged；
The interior pole shoe ring（3）It is above axially spaced to be arranged alternately multiple pole I（7）With pole II（8）, the pole I
（7）The pole II adjacent with its（8）Between be annular groove I；Magnet ring I is equipped in the annular groove I（5）；The pole I
（7）Height be higher than pole II（8）；
The outer pole shoe ring（4）It is above axially spaced to be arranged alternately multiple pole III（9）With pole IV（10）, described
Pole III（9）The pole IV adjacent with its（10）Between be annular groove II；Magnet ring II is equipped in the annular groove II（6）；Institute
The pole III stated（9）Height be less than pole IV（10）；
The magnet ring I（5）With permanent magnet II（6）It is oppositely arranged, magnet ring（5）With permanent magnet II（6）Between there are
Gap；The pole I（7）With pole III（9）It is oppositely arranged, pole I（7）Periphery be equipped with pole tooth I（11）, described
Pole tooth I（11）Radially to pole III（9）Inner headed face extend, with pole III（9）Inner headed face between there are gap, should
Magnetic fluid is filled in gap to be sealed；The pole II（8）With pole IV（10）It is oppositely arranged, pole IV（10）Inner circle
Face is equipped with pole tooth II（12）, the pole tooth II（12）Radially to pole II（8）Periphery extend, with pole II（8）
Periphery between there are gap, filling magnetic fluid is sealed in the gap.
2. as described in claim 1 to tooth labyrinth type device for sealing magnetic fluid, it is characterised in that：The pole I（7）'s
The pole tooth I being arranged on periphery（11）Quantity be 1-10, the pole IV（10）Inner headed face on the pole tooth II that is arranged
（12）Quantity be 1-10.
3. as described in claim 1 to tooth labyrinth type device for sealing magnetic fluid, it is characterised in that：It the annular groove I and is set to
Magnet ring I in annular groove I（5）Quantity be 4 ~ 20；The annular groove II and magnet ring II in annular groove II（6）It is right
Answer the annular groove I and magnet ring I in annular groove I（5）Quantity and position setting.
4. as described in claim 1 to tooth labyrinth type device for sealing magnetic fluid, it is characterised in that：The pole tooth I（11）With
Pole III（9）Inner headed face between gap size be 0.05 ~ 3mm；The pole tooth II（12）With pole II（8）It is outer
The size in the gap between disc is 0.05 ~ 3mm.
5. as described in claim 1 to tooth labyrinth type device for sealing magnetic fluid, it is characterised in that：The magnet ring I（5）
With magnet ring II（6）It is axial charging type permanent magnet.
6. as claimed in claim 5 to tooth labyrinth type device for sealing magnetic fluid, it is characterised in that：Mutual corresponding magnet ring
I（5）With magnet ring II（6）Magnetic line of force direction it is opposite；Two adjacent magnet ring I（5）Between magnetic line of force direction phase
Instead；Two adjacent magnet ring II（6）Between magnetic line of force direction it is opposite.
7. as described in claim 1 to tooth labyrinth type device for sealing magnetic fluid, it is characterised in that：The outer pole shoe ring（4）
The periphery at both ends is equipped with groove, and sealing ring is equipped in the groove（13）.
8. as described in claim 1 to tooth labyrinth type device for sealing magnetic fluid, it is characterised in that：It further include the first from left magnetism-isolating loop
（14）, the second from left magnetism-isolating loop（15）, a right magnetism-isolating loop（16）, right two magnetism-isolating loops（17）；The first from left magnetism-isolating loop（14）With the right side one
Magnetism-isolating loop（16）It is set in axis（1）It is upper to be set to shell（2）Inner wall on, the first from left magnetism-isolating loop（14）Positioned at interior pole shoe ring（3）A left side
Side, a right magnetism-isolating loop（16）Positioned at interior pole shoe ring（3）Right side；The second from left magnetism-isolating loop（15）With right two magnetism-isolating loops（17）
Set on shell（2）Inner wall on, the second from left magnetism-isolating loop（15）Positioned at outer pole shoe ring（4）Left side, right two magnetism-isolating loops（17）Positioned at outer
Pole shoe ring（4）Right side.
9. as claimed in claim 7 to tooth labyrinth type device for sealing magnetic fluid, it is characterised in that：It further include left bearing（18）
And right bearing（19）；The left bearing（18）And right bearing（19）It is set in axis（1）On, the left bearing（18）If
In the first from left magnetism-isolating loop（14）, the second from left magnetism-isolating loop（15）Left side, respectively with the first from left magnetism-isolating loop（14）, the second from left magnetism-isolating loop（15）Contact；
The right bearing（19）Set on a right magnetism-isolating loop（16）, right two magnetism-isolating loops（17）Right side, respectively with a right magnetism-isolating loop（16）
With right two magnetism-isolating loops（17）Contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811017089.7A CN108799505A (en) | 2018-09-03 | 2018-09-03 | It is a kind of to tooth labyrinth type device for sealing magnetic fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811017089.7A CN108799505A (en) | 2018-09-03 | 2018-09-03 | It is a kind of to tooth labyrinth type device for sealing magnetic fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108799505A true CN108799505A (en) | 2018-11-13 |
Family
ID=64081831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811017089.7A Pending CN108799505A (en) | 2018-09-03 | 2018-09-03 | It is a kind of to tooth labyrinth type device for sealing magnetic fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108799505A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648383A (en) * | 2020-12-31 | 2021-04-13 | 清华大学 | Magnetic liquid sealing device |
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| JPH04341665A (en) * | 1991-05-20 | 1992-11-27 | Nippon Seiko Kk | Multistage magnetic fluid sealing device for vacuum space |
| JPH0626579A (en) * | 1992-07-07 | 1994-02-01 | Mitsubishi Electric Corp | Sealing device of superconductive rotary machine |
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| CN1912428A (en) * | 2006-08-01 | 2007-02-14 | 中国兵器工业第五二研究所 | Magnetic liquid sealing device |
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| CN205663888U (en) * | 2016-05-25 | 2016-10-26 | 广西科技大学 | Many magnetic sources terminal surface formula magnetic fluid seal device |
| CN106122285A (en) * | 2016-09-09 | 2016-11-16 | 广西科技大学 | A kind of circular cone type device for sealing magnetic fluid |
| CN106969149A (en) * | 2017-02-23 | 2017-07-21 | 北京交通大学 | Magnetic liquid end face labyrinth gland |
| CN106151526B (en) * | 2016-08-15 | 2018-04-06 | 广西科技大学 | A kind of split-type labyrinth type device for sealing magnetic fluid |
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- 2018-09-03 CN CN201811017089.7A patent/CN108799505A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03203067A (en) * | 1989-12-28 | 1991-09-04 | Nippon Densan Corp | Spindle motor |
| JPH04341665A (en) * | 1991-05-20 | 1992-11-27 | Nippon Seiko Kk | Multistage magnetic fluid sealing device for vacuum space |
| JPH0626579A (en) * | 1992-07-07 | 1994-02-01 | Mitsubishi Electric Corp | Sealing device of superconductive rotary machine |
| CN2447582Y (en) * | 2000-11-03 | 2001-09-12 | 罗喜梅 | Magnetofluid seal driving device for vacuum equipment driving shaft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648383A (en) * | 2020-12-31 | 2021-04-13 | 清华大学 | Magnetic liquid sealing device |
| CN112648383B (en) * | 2020-12-31 | 2021-08-24 | 清华大学 | Magnetic liquid sealing device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |
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| RJ01 | Rejection of invention patent application after publication |