JPS57167566A - Vacuum seal for turning shaft - Google Patents
Vacuum seal for turning shaftInfo
- Publication number
- JPS57167566A JPS57167566A JP56053199A JP5319981A JPS57167566A JP S57167566 A JPS57167566 A JP S57167566A JP 56053199 A JP56053199 A JP 56053199A JP 5319981 A JP5319981 A JP 5319981A JP S57167566 A JPS57167566 A JP S57167566A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- rotor
- narrow space
- magnet
- stator
- 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
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- 239000011553 magnetic fluid Substances 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 238000007789 sealing Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
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
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
PURPOSE:To improve sealing performance of a vacuum seal and to facilitate manufacture of the same, by arranging seal plates on the outlet side of a stator having a seal consisting of a helical groove in the manner that they are held in contact with a magnet, and forming a narrow space having a magnetic fluid charged hermetically therein between the inner peripheral surfaces of the seal plates and the outer surface of a rotor. CONSTITUTION:A sealing apparatus of this invention is constituted by disposing seal plates 5 near the end face of a stator 2 on the low-pressure side of a seal consisting of a helical groove, in the manner that it is fixed in place by a retainer 6 on the opposite sides of an annular magnet 4 having N-pole at one side and S-pole at the other side, forming a narrow space between a rotor 1 and the inner peripheral surfaces of the seal plates 5, and charging a magnet fluid 3 into the narrow space. Since, with such an arrangement, the magnetic fluid 3 is retained in the narrow space by the function of a magnetic loop constituted by the magnet 4, seal plates 5 and rotor 1, gases on the opposite sides of the seal can be isolated from each other and the seal can be designed by considering the gas in the helical groove as molecular flow. Therefore, it is enabled to increase the clearance between the rotor 1 and stator 2, to facilitate disigning and manufacture of the shaft and bearings, and to reduce troubles such as seizure of the shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56053199A JPS57167566A (en) | 1981-04-10 | 1981-04-10 | Vacuum seal for turning shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56053199A JPS57167566A (en) | 1981-04-10 | 1981-04-10 | Vacuum seal for turning shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57167566A true JPS57167566A (en) | 1982-10-15 |
Family
ID=12936197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56053199A Pending JPS57167566A (en) | 1981-04-10 | 1981-04-10 | Vacuum seal for turning shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57167566A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6263468U (en) * | 1985-10-14 | 1987-04-20 | ||
| JPH01250678A (en) * | 1988-02-17 | 1989-10-05 | Carl Freudenberg:Fa | Packing |
| CN106907486A (en) * | 2017-03-09 | 2017-06-30 | 石家庄铁道大学 | The controllable compound sealing device and encapsulating method of sealing are driven for tunneling owner |
| CN108692032A (en) * | 2018-06-26 | 2018-10-23 | 清华大学 | A kind of magnetic fluid seal device of Multilevel partial-pressure |
-
1981
- 1981-04-10 JP JP56053199A patent/JPS57167566A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6263468U (en) * | 1985-10-14 | 1987-04-20 | ||
| JPH0222530Y2 (en) * | 1985-10-14 | 1990-06-18 | ||
| JPH01250678A (en) * | 1988-02-17 | 1989-10-05 | Carl Freudenberg:Fa | Packing |
| CN106907486A (en) * | 2017-03-09 | 2017-06-30 | 石家庄铁道大学 | The controllable compound sealing device and encapsulating method of sealing are driven for tunneling owner |
| CN108692032A (en) * | 2018-06-26 | 2018-10-23 | 清华大学 | A kind of magnetic fluid seal device of Multilevel partial-pressure |
| CN108692032B (en) * | 2018-06-26 | 2020-07-28 | 清华大学 | A multi-stage partial pressure magnetic fluid sealing device |
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