CN207777625U - Deep trouth water-cooled magnetic fluid seal device - Google Patents
Deep trouth water-cooled magnetic fluid seal device Download PDFInfo
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- CN207777625U CN207777625U CN201720329498.5U CN201720329498U CN207777625U CN 207777625 U CN207777625 U CN 207777625U CN 201720329498 U CN201720329498 U CN 201720329498U CN 207777625 U CN207777625 U CN 207777625U
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- pole shoe
- shell
- sealing ring
- sleeve
- hole
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Abstract
Deep trouth water-cooled magnetic fluid seal device, belongs to sealing field of mechanical engineering.Solve the problems, such as that existing magnetic fluid seal device service life under major diameter, high rotating speed, high environment temperature operating mode is short, sealing performance declines.Pole shoe cell wall most outer is provided with limbers, and the limbers in adjacent slot walls is respectively distributed to the both sides of axis, symmetric about the axis, and coolant liquid flows successively through all cooling baths, improves cooling efficiency；Pole shoe sleeve is provided with two radial through-hole in outer surface, first through-hole face pole shoe first left cooling bath, first cooling bath on the right of second through-hole face pole shoe, and opposite with the through-hole on shell (4) respectively, the import and export as coolant liquid；The method that deep cooling bath is opened on pole shoe, make the contact area of pole shoe and coolant liquid increase, coolant liquid closer to high temperature magnetic liquid (16) and meanwhile do not influence magnetic loop, the voltage endurance capability and cooling efficiency of sealing device can be improved.
Description
Technical field
The invention belongs to sealing field of mechanical engineering, the magnetic liquid that is particularly suitable under high environment temperature and high speed conditions
Body seals.
Background technology
Magnetic fluid sealing is used widely because of the advantages that its zero leakage, long-life, low friction.However in practical application
In, magnetic fluid sealing is under major diameter, high rotating speed and high environment temperature operating mode, and magnetic liquid is often because of temperature in seal clearance
It spends high and fails, performance can also decline even failure to permanent magnet under high temperature environment, these factors seriously affect magnetic liquid
The service life of sealing.In the world, the cooling also one of major diameter, high rotating speed, high environment temperature operating mode magnetic hydraulic seal
It is directly a problem.Therefore most important to the Study on Cooling of magnetic fluid sealing and improvement, it is close to directly affect magnetic liquid
The service life of seal apparatus.Existing magnetic fluid seal device embedded thermally conductive sheet as disclosed in 104455463 A of Publication No. CN
Coolant liquid formula magnetic fluid seal device, described device is bonded with thermally conductive sheet in each tooth socket with fluid sealant, on pole shoe
It is provided with cooling passage, the apparatus structure is complicated, very high to the requirement on machining accuracy of thermally conductive sheet due to slot size very little, together
When hold cooling passage on pole shoe and can influence magnetic loop.For another example Authorization Notice No. is a kind of high disclosed in CN 200943707Y
Warm magnetic fluid sealing water cooling plant, described device cool down magnetic liquid by being sleeved on the insertion water jacket of pole shoe outer circle,
Due to embedded water jacket apart from magnetic liquid farther out, cooling effect is bad.For another example disclosed in 103574041 A of Publication No. CN
The magnetic liquid rotating sealing device of cooling bath and centrifugal combination, described device are provided with cooling bath on pole shoe, can influence magnetic
Circuit, and then influence sealing voltage endurance capability.
Invention content
The technical problem to be solved in the invention is that existing magnetic liquid rotating sealing device is in major diameter, high rotating speed, height
Under ambient temperature conditions, the magnetic fluid sealing lost of life is easily led to even since seal clearance calorific value is big, environment temperature is high
Failure.Therefore a kind of deep trouth water-cooled magnetic fluid seal device is proposed.
The technical solution adopted by the present invention to solve the technical problems is：
Deep trouth water-cooled magnetic fluid seal device, the device include：Rotating shaft, left pole shoe, body seal circle, shell,
Left pole shoe sleeve, left pole shoe sleeve seal circle, the first sealing ring of middle copper ring, middle copper ring, permanent magnet, the second sealing ring of middle copper ring,
Right pole shoe sleeve, right pole shoe sleeve seal circle, end cap, end cap seal circle, right pole shoe, magnetic liquid.
Constitute the connection between each section of the device：In the body seal circle, the groove of installation inside the housing, structure
At the shell with sealing ring；The left pole shoe sleeve seal circle is mounted in the groove of left pole shoe excircle of sleeve, constitutes band sealing
The left pole shoe sleeve of circle；First sealing ring of middle copper ring, the second sealing ring of middle copper ring are mounted in the groove of middle copper ring end face,
Constitute the middle copper ring with sealing ring；The right pole shoe sleeve seal circle is mounted in the groove of right pole shoe excircle of sleeve, constitutes band
The right pole shoe sleeve of sealing ring；The end cap seal circle is mounted in the groove of end cap end face, constitutes the end cap with sealing ring.
The left pole shoe sleeve with sealing ring, left pole shoe, permanent magnet, the middle copper ring with sealing ring, the right side with sealing ring
Pole shoe sleeve, right pole shoe are sequentially placed into the shell with sealing ring；The left side of the left pole shoe sleeve is contacted with shell；Rotation
Adjust the position of shell so that two holes of left pole shoe sleeve and two holes of right pole shoe sleeve respectively with A1, A2 of shell and
The hole B1, B2 is aligned；It is connected through a screw thread and fixes end cap and shell, making each component, axially position is completed inside the shell；The band
The left pole shoe sleeve of sealing ring, left pole shoe, permanent magnet, the middle copper ring with sealing ring, the right pole shoe sleeve with sealing ring, right pole
The sealing element of boots, shell and end cap composition puts on rotating shaft, magnetic liquid is injected to described device, by housing flange disk
It is threadedly coupled the positioning for realizing shell.
The left pole shoe, right pole shoe outer circle be all provided with circulation coolant liquid cooling bath, cooling bath can increase pole shoe with it is cold
But the contact area of liquid improves cooling efficiency；Cooling groove groove wall is identical as the axial dimension of pole tooth, position and the pole tooth of cell wall
Aligned in position does not interfere with the formation of magnetic loop in this way, ensures the voltage endurance capability of sealing device；The left pole shoe, right pole shoe
Cell wall most outer is provided with limbers, and the limbers in adjacent slot walls is respectively distributed to the both sides of axis, symmetric about the axis, this
Design can allow coolant liquid to flow successively through all cooling baths, improve cooling efficiency；The left pole shoe sleeve is provided in outer surface
Two radial through-hole, wherein the left pole shoe first left cooling bath of first through-hole face, the left pole shoe of second through-hole face is right
Two through-holes of first, side cooling bath, left pole shoe sleeve are opposite with through-hole A1, A2 on shell respectively, as coolant liquid
Import and export；The right pole shoe sleeve is provided with two radial through-hole in outer surface, wherein the right pole shoe left side of first through-hole face
One cooling bath, first cooling bath on the right of the right pole shoe of second through-hole face, two through-holes of right pole shoe sleeve are respectively and outside
Through-hole B1, B2 on shell is opposite, the import and export as coolant liquid.
When the deep trouth water-cooled magnetic fluid seal device work, sub-cooled is passed through by hole A1, B1 on shell
Liquid cools down left pole shoe, right pole shoe and magnetic liquid through the cooling bath on left and right pole shoe, by A2, B2 by sealing device
Interior coolant liquid discharge, realizes circulating cooling.
The present invention compares possessed advantageous effect with prior art：It works in deep trouth water-cooled magnetic fluid seal device
When, using pump, by cryogenic liquid, A1, B1, hole from shell input sealing device, and cryogenic liquid and pole shoe come into full contact with, energy
Enough cooling pole shoes rapidly and efficiently, to the cooling by magnetic liquid rapidly and efficiently；This side that deep cooling bath is opened on pole shoe
Method makes the contact area of pole shoe and coolant liquid increase, and the distribution mode of limbers can also allow coolant liquid to be come into full contact with pole shoe, cold
But cell wall is equal with pole tooth width, aligned in position can not influence magnetic loop, to improve the voltage endurance capability of sealing device and cold
But efficiency；Work postcooling liquid A2, B2 discharge sealing device from shell, realizes circulating cooling；Solves major diameter, height turns
Cooling problem under speed, high environment temperature operating mode.
Description of the drawings
Fig. 1 deep trouth water-cooled magnetic fluid seal device structure charts；
Fig. 2 pole shoe each section title schematic diagrames；
Fig. 3 coolant liquids circulation schematic diagram.
In Fig. 1：Rotating shaft 1, left pole shoe 2, body seal circle 3, shell 4, left pole shoe sleeve 5, left pole shoe sleeve seal circle
6, the first sealing ring of middle copper ring 7, middle copper ring 8, permanent magnet 9, the second sealing ring of middle copper ring 10, right pole shoe sleeve 11, right pole shoe set
Cylinder sealing ring 12, end cap 13, end cap seal circle 14, right pole shoe 15, magnetic liquid 16.
Specific implementation mode
Using attached drawing as specific implementation mode, the present invention will be further described：
Deep trouth water-cooled magnetic fluid seal device such as Fig. 1：Rotating shaft 1, left pole shoe 2, body seal circle 3, shell 4, a left side
Pole shoe sleeve 5, left pole shoe sleeve seal circle 6, the first sealing ring of middle copper ring 7, middle copper ring 8, permanent magnet 9, middle copper ring second seal
Circle 10, right pole shoe sleeve 11, right pole shoe sleeve seal circle 12, end cap 13, end cap seal circle 14, right pole shoe 15, magnetic liquid 16.
Constitute the connection between each section of the device：The body seal circle 3, in the groove inside shell 4,
Constitute the shell with sealing ring；The left pole shoe sleeve seal circle 6 is mounted in the groove of left 5 outer circle of pole shoe sleeve, constitutes band
The left pole shoe sleeve of sealing ring；First sealing ring of middle copper ring 7, the second sealing ring of middle copper ring 10 are mounted on 8 end face of middle copper ring
Groove in, constitute the middle copper ring with sealing ring；The right pole shoe sleeve seal circle 12 is mounted on right 11 outer circle of pole shoe sleeve
In groove, the right pole shoe sleeve with sealing ring is constituted；The end cap seal circle 14 is mounted in the groove of 13 end face of end cap, is constituted
End cap with sealing ring.
The left pole shoe sleeve with sealing ring, left pole shoe 2, permanent magnet 9, the middle copper ring with sealing ring, with sealing ring
Right pole shoe sleeve, right pole shoe 15 are sequentially placed into the shell with sealing ring；The left side of the left pole shoe sleeve 5 connects with shell 4
It touches；Rotation adjusts the position of shell 4 so that two holes of left pole shoe sleeve 5 and two holes of right pole shoe sleeve 11 respectively with outside
A1, A2 and B1 of shell 4, the alignment of the holes B2；It is connected through a screw thread and fixes end cap 13 and shell 4, keep each component axial in shell 4
Positioning is completed；The left pole shoe sleeve with sealing ring, left pole shoe 2, permanent magnet 9, the middle copper ring with sealing ring, with sealing ring
The sealing element that right pole shoe sleeve, right pole shoe 15, shell 4 and end cap 13 form puts on rotating shaft 1, injects magnetic liquid to described device
Body 16 realizes the positioning of shell 4 by the threaded connection on 4 ring flange of shell.
The left pole shoe 2, right pole shoe 15 outer circle be all provided with circulation coolant liquid cooling bath, cooling bath can increase pole shoe with
The contact area of coolant liquid improves cooling efficiency；Cooling groove groove wall is identical as the axial dimension of pole tooth, position and the pole tooth of cell wall
Aligned in position, do not interfere with the formation of magnetic loop in this way, ensure the voltage endurance capability of sealing device；The left pole shoe 2, right pole shoe
15 cell wall most outer is provided with limbers, and the limbers in adjacent slot walls is respectively distributed to the both sides of axis, symmetric about the axis,
This design can allow coolant liquid to flow successively through all cooling baths, improve cooling efficiency；The left pole shoe sleeve 5 is in outer surface
Radial through-hole there are two opening, wherein the left 2 first left cooling bath of pole shoe of first through-hole face, the second left pole of through-hole face
2 first cooling bath in the right of boots, two through-holes of left pole shoe sleeve 5 are opposite with through-hole A1, A2 on shell 4 respectively, as cold
But the import and export of liquid；The right pole shoe sleeve 11 is provided with two radial through-hole in outer surface, wherein the first right pole of through-hole face
15 first left cooling bath of boots, right 15 first cooling bath in the right of pole shoe of second through-hole face, the two of right pole shoe sleeve 11
A through-hole is opposite with through-hole B1, B2 on shell 4 respectively, the import and export as coolant liquid.
When deep trouth water-cooled magnetic fluid seal device work, using pump by cryogenic liquid from A1, B1 on shell 4
Hole inputs sealing device, and cryogenic liquid and pole shoe come into full contact with, cooling pole shoe that can be rapidly and efficiently, to by magnetic liquid
16 cooling rapidly and efficiently；This method that deep cooling bath is opened on pole shoe makes the contact area of pole shoe and coolant liquid increase, and leads to
The distribution mode in water hole can also allow coolant liquid to be come into full contact with pole shoe, cooling cell wall is equal with pole tooth width, aligned in position can
Magnetic loop is not influenced, to improve the voltage endurance capability and cooling efficiency of strong sealing device；Work postcooling liquid from A2 on shell 4,
Sealing device is discharged in B2, realizes circulating cooling.
Left pole shoe 2, left pole shoe sleeve 5, right pole shoe 15, right pole shoe sleeve 11, rotating shaft 1 select the good material of magnetic conductivity
Material, such as electrical pure iron；
Permanent magnet 9 selects neodymium iron boron；
Shell 4 selects non-magnetic substance, such as non-magnetic stainless steel；
The type of magnetic liquid 16 selects the magnetic liquid of different base load liquid according to the difference of use environment and sealing medium.
Claims (4)
1. deep trouth water-cooled magnetic fluid seal device, it is characterised in that：The device includes：It is rotating shaft (1), left pole shoe (2), outer
Shell sealing ring (3), shell (4), left pole shoe sleeve (5), left pole shoe sleeve seal circle (6), the first sealing ring of middle copper ring (7), in
Copper ring (8), permanent magnet (9), the second sealing ring of middle copper ring (10), right pole shoe sleeve (11), right pole shoe sleeve seal circle (12), end
Cover (13), end cap seal circle (14), right pole shoe (15), magnetic liquid (16)；
Constitute the connection between each section of the device：The body seal circle (3) is mounted in the internal groove of shell (4),
Constitute the shell with sealing ring；The left pole shoe sleeve seal circle (6) is mounted in the groove of left pole shoe sleeve (5) outer circle, structure
At the left pole shoe sleeve with sealing ring；First sealing ring of middle copper ring (7), the second sealing ring of middle copper ring (10) are mounted on middle copper
In the groove of ring (8) end face, the middle copper ring with sealing ring is constituted；The right pole shoe sleeve seal circle (12) is mounted on right pole shoe set
In the groove of cylinder (11) outer circle, the right pole shoe sleeve with sealing ring is constituted；The end cap seal circle (14) is mounted on end cap (13)
In the groove of end face, the end cap with sealing ring is constituted；
The left pole shoe sleeve with sealing ring, left pole shoe (2), permanent magnet (9), the middle copper ring with sealing ring, with sealing ring
Right pole shoe sleeve, right pole shoe (15) are sequentially placed into the shell with sealing ring；The left side of the left pole shoe sleeve (5) and shell
(4) it contacts；Rotation adjusts the position of shell (4) so that two holes of left pole shoe sleeve (5) and two of right pole shoe sleeve (11)
Hole is aligned with A1, A2 and B1 of shell (4), the holes B2 respectively；It is connected through a screw thread and fixes end cap (13) and shell (4), make each
Component is completed in the interior axially position of shell (4)；The left pole shoe sleeve with sealing ring, left pole shoe (2), permanent magnet (9), with close
The sealing element set of the middle copper ring of seal, the right pole shoe sleeve with sealing ring, right pole shoe (15), shell (4) and end cap (13) composition
Last time shaft (1) realizes shell to described device injection magnetic liquid (16) by the threaded connection on shell (4) ring flange
(4) positioning；
When the deep trouth water-cooled magnetic fluid seal device work, cryogenic liquid is passed through by hole A1, B1 on shell, is passed through
Cooling bath on pole shoe cools down left pole shoe (2), right pole shoe (15) and magnetic liquid (16), is filled sealing by A2, B2
Coolant liquid discharge in setting, realizes circulating cooling.
2. deep trouth water-cooled magnetic fluid seal device according to claim 1, it is characterised in that：
The left pole shoe sleeve (5) is provided with two radial through-hole in outer surface, wherein the first left pole shoe of through-hole face (2) left side
First cooling bath, the second left pole shoe of through-hole face (2) the right, first cooling bath, two through-holes of left pole shoe sleeve (5)
It is opposite with through-hole A1, A2 on shell (4) respectively, the import and export as coolant liquid.
3. deep trouth water-cooled magnetic fluid seal device according to claim 1, it is characterised in that：
The right pole shoe sleeve (11) is provided with two radial through-hole in outer surface, wherein first right pole shoe of through-hole face (15) is left
First, side cooling bath, the second right pole shoe of through-hole face (15) the right, first cooling bath, two of right pole shoe sleeve (11)
Through-hole is opposite with through-hole B1, B2 on shell (4) respectively, the import and export as coolant liquid.
4. deep trouth water-cooled magnetic fluid seal device according to claim 1, it is characterised in that：
The left pole shoe (2), right pole shoe (15) cell wall most outer be provided with limbers, the limbers in adjacent slot walls is distributed respectively
It is symmetric about the axis in the both sides of axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720329498.5U CN207777625U (en) | 2017-03-31 | 2017-03-31 | Deep trouth water-cooled magnetic fluid seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720329498.5U CN207777625U (en) | 2017-03-31 | 2017-03-31 | Deep trouth water-cooled magnetic fluid seal device |
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| Publication Number | Publication Date |
|---|---|
| CN207777625U true CN207777625U (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720329498.5U Expired - Fee Related CN207777625U (en) | 2017-03-31 | 2017-03-31 | Deep trouth water-cooled magnetic fluid seal device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207777625U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178200A (en) * | 2020-09-27 | 2021-01-05 | 清华大学 | Magnetic liquid sealing device |
| CN112360987A (en) * | 2020-11-06 | 2021-02-12 | 西华大学 | Magnetic fluid sealing device for centrifugal compressor |
| CN114370508A (en) * | 2021-12-23 | 2022-04-19 | 清华大学 | Magnetic liquid sealing device with cooling system |
-
2017
- 2017-03-31 CN CN201720329498.5U patent/CN207777625U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178200A (en) * | 2020-09-27 | 2021-01-05 | 清华大学 | Magnetic liquid sealing device |
| CN112360987A (en) * | 2020-11-06 | 2021-02-12 | 西华大学 | Magnetic fluid sealing device for centrifugal compressor |
| CN112360987B (en) * | 2020-11-06 | 2021-06-11 | 西华大学 | Magnetic fluid sealing device for centrifugal compressor |
| CN114370508A (en) * | 2021-12-23 | 2022-04-19 | 清华大学 | Magnetic liquid sealing device with cooling system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180828 Termination date: 20210331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |