CN104455467A - Sealing method suitable for sealing magnetic liquid under large shaft runout working condition - Google Patents
Sealing method suitable for sealing magnetic liquid under large shaft runout working condition Download PDFInfo
- Publication number
- CN104455467A CN104455467A CN201410665846.7A CN201410665846A CN104455467A CN 104455467 A CN104455467 A CN 104455467A CN 201410665846 A CN201410665846 A CN 201410665846A CN 104455467 A CN104455467 A CN 104455467A
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- Prior art keywords
- sealing
- magnetic fluid
- chamber
- fluid sealing
- coupling
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Classifications
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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
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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 invention discloses a sealing method suitable for sealing magnetic liquid under the large shaft runout working condition and belongs to the technical field of mechanical engineering sealing. The sealing method is especially suitable for sealing magnetic liquid under the large shaft radial runout working condition in large equipment, solves the problem that magnetic liquid sealing can not normally work under the large shaft radial runout working condition, and ensures the sealing performance. According to the method, the arrangement position of a coupling is changed, and a flexible coupling is used for connecting, so that radial runout of a motor shaft is not affected, and the sealing interval of the magnetic liquid is met; the dimension of a magnetic liquid sealing assembly is reduced, the quantity of heat generated in the working process is low, and the sealing performance is improved.
Description
Technical field
The invention belongs to mechanical engineering technical field of sealing technology, be specially adapted to the magnetic fluid sealing under the larger operating mode of some main equipment shaft circular runouts.
Background technique
Along with the development in the field such as Aero-Space, military project, more and more higher requirement is proposed to sealing, traditional seal form, as dry gas seals, labyrinth seal etc. cannot meet the requirement of zero leakage, and magnetic fluid sealing has zero leakage, long lifetime, the advantages such as high reliability, become unique seal form of the seal request that can meet these fields.And in these fields some main equipments as large-scale transonic wind tunnel because the diameter of axle of main shaft own is very large, bearing load is very large, linear velocity is high especially, roller bearings can not be adopted, sliding bearing can only be adopted to support, circular runout is larger, but in magnetic fluid sealing assembly, the seal clearance that the pole shoe be usually directed to and axle are formed is between 0.1mm ~ 0.2mm, therefore under magnetic fluid sealing is used in this operating mode, main shaft circular runout is larger, the destruction of pole tooth on pole shoe in magnetic fluid sealing assembly can be caused, thus reduce sealability, reduce reliability.In order to solve this deficiency of encapsulating method of traditional magnetic hydraulic seal, it is very little that this method makes full use of motor shaft circular runout, meet the feature of magnetic fluid sealing clearance requirement, by changing the position of coupling, the magnetic fluid sealing of main shaft in main equipment and chamber is replaced by the magnetic fluid sealing of motor shaft and chamber, avoid axle to beat the impact of larger operating mode on magnetic fluid sealing performance, ensure that sealing effect and the reliability of magnetic fluid sealing, the sealability of magnetic fluid sealing is not fully exerted, to solving in some main equipments in these fields, the sealing difficult problem that Axial and radial is beated under larger operating mode has very important significance.
Summary of the invention
Technical problem to be solved by this invention is: in more existing main equipments, and the Axial and radial magnetic fluid sealing encapsulating method difficulty of beating under larger operating mode reaches the requirement of magnetic fluid sealing work, affects sealability.
Technological scheme of the present invention:
Be applicable to axle to beat the encapsulating method of larger operating mode magnetic hydraulic seal, sealing method comprises the following steps:
The positioning hole of step one grinding and wash chamber shell right side and the positioning spigot of magnetic fluid sealing assembly left side;
Seal ring is arranged in the seal groove of magnetic fluid sealing assembly left side by step 2;
Magnetic fluid sealing assembly is arranged on chamber shell right side by step 3; Magnetic fluid sealing assembly and chamber shell right side are located by positioning spigot; Magnetic fluid sealing assembly and chamber shell are bolted and are fixed;
Motor shaft pushes in the endoporus of magnetic fluid sealing assembly by step 4, puts in chamber;
Main shaft, motor shaft are connected by coupling by step 5 in chamber;
Step 6 is bolted and is fixed in frame by motor;
Above-mentioned steps installs rear formation magnetic liquid sealing structure;
The coupling coupled position of described main shaft, motor shaft is in chamber interior.
Flexible coupling selected by coupling, as: double roller chain coupling, Quincunx elastic coupler, coupling with rubber type element etc.
Beneficial effect of the present invention:
The present invention is the magnetic fluid sealing being adjusted to the very little motor shaft of circular runout and chamber by changing the coupling position magnetic fluid sealing of to be beated by main equipment axis under larger operating mode, structural adjustment is simple, avoid the impact that Axial and radial is beated on magnetic fluid sealing performance under larger operating mode, ensure that the life-span of magnetic fluid sealing; Adopt flexible coupling, main shaft run-out can not have influence on motor shaft run-out, thus meets the requirement in magnetic fluid sealing gap; Due to motor shaft size, to compare main shaft much little, then the magnetic fluid sealing assembly that the magnetic fluid sealing size of components forming sealing compares conventional sealing method is also corresponding much little, and linear velocity and heating value are also corresponding to be reduced, thus improves sealability.Be specially adapted to the magnetic fluid sealing required under the larger operating mode of some main equipment axis circular runouts of zero leakage.
Accompanying drawing explanation
Fig. 1 coupling is arranged on the magnetic fluid sealing erection drawing in chamber.
The magnetic fluid sealing erection drawing of Fig. 2 conventional sealing method.
Embodiment
Be that the invention will be further described for embodiment with accompanying drawing:
Be applicable to axle to beat the encapsulating method of larger operating mode magnetic hydraulic seal, sealing method comprises the following steps:
The positioning hole of step one grinding and wash chamber 3 shell right side and the positioning spigot of magnetic fluid sealing assembly 5 left side;
Seal ring 4 is arranged in the seal groove of magnetic fluid sealing assembly 5 left side by step 2;
Magnetic fluid sealing assembly 5 is arranged on chamber 3 shell right side by step 3; Magnetic fluid sealing assembly 5 and chamber 3 shell right side are located by positioning spigot; Magnetic fluid sealing assembly 5 and chamber 3 shell are bolted and are fixed;
Motor shaft 6 pushes in the endoporus of magnetic fluid sealing assembly 5 by step 4, puts in chamber 3;
Main shaft 1 and motor shaft 6 are connected by coupling 2 by step 5 in chamber 3;
Step 6 is bolted and is fixed in frame by motor;
Above-mentioned steps installs rear formation magnetic liquid sealing structure, as Fig. 1.
Coupling 2 coupled position of described main shaft 1, motor shaft 6 is inner at chamber 3, as Fig. 1.
Flexible coupling selected by coupling 2, as: double roller chain coupling, Quincunx elastic coupler, coupling with rubber type element etc., can not affect motor shaft run-out.
Claims (3)
1. be applicable to axle to beat the encapsulating method of larger operating mode magnetic hydraulic seal, it is characterized in that: sealing method comprises the following steps:
The positioning hole of step one grinding and wash chamber (3) shell right side and the positioning spigot of magnetic fluid sealing assembly (5) left side;
Seal ring (4) is arranged in the seal groove of magnetic fluid sealing assembly (5) left side by step 2;
Magnetic fluid sealing assembly (5) is arranged on chamber (3) shell right side by step 3; Magnetic fluid sealing assembly (5) and chamber (3) shell right side are located by positioning spigot; Magnetic fluid sealing assembly (5) and chamber (3) shell are bolted and are fixed;
Motor shaft (6) pushes in the endoporus of magnetic fluid sealing assembly (5) by step 4, puts in chamber (3);
Main shaft (1) and motor shaft (6) are connected by coupling (2) by step 5 in chamber (3);
Step 6 is bolted and is fixed in frame by motor;
Above-mentioned steps installs rear formation magnetic liquid sealing structure.
2. a kind of axle that is applicable to according to claim 1 is beated the encapsulating method of larger operating mode magnetic hydraulic seal, it is characterized in that:
Described main shaft (1), coupling (2) coupled position of motor shaft (6) are inner at chamber (3).
3. a kind of axle that is applicable to according to claim 1 is beated the encapsulating method of larger operating mode magnetic hydraulic seal, it is characterized in that:
Flexible coupling selected by coupling (2), as: double roller chain coupling, Quincunx elastic coupler, coupling with rubber type element etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665846.7A CN104455467A (en) | 2014-11-20 | 2014-11-20 | Sealing method suitable for sealing magnetic liquid under large shaft runout working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665846.7A CN104455467A (en) | 2014-11-20 | 2014-11-20 | Sealing method suitable for sealing magnetic liquid under large shaft runout working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104455467A true CN104455467A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410665846.7A Pending CN104455467A (en) | 2014-11-20 | 2014-11-20 | Sealing method suitable for sealing magnetic liquid under large shaft runout working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104455467A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055037A (en) * | 2007-04-29 | 2007-10-17 | 浙江工业大学 | Magnetofluid seal driving device for vacuum equipment driving shaft |
| CN201027988Y (en) * | 2007-04-29 | 2008-02-27 | 浙江工业大学 | Magnetofluid seal driving device for vacuum equipment driving shaft |
| CN101799075A (en) * | 2010-04-12 | 2010-08-11 | 北京交通大学 | Rotation shaft combined sealing device |
| CN102720841A (en) * | 2011-12-20 | 2012-10-10 | 北京交通大学 | Large-diameter magnetic liquid rotating seal assembly method |
| CN103335063A (en) * | 2013-06-26 | 2013-10-02 | 镇江市博林光电科技有限公司 | Hermetical transmission structure of high pressure fluid magnetic coupler |
| CN103486140A (en) * | 2013-09-18 | 2014-01-01 | 浙江工业大学 | High-precision transmission device under thermal vacuum environment |
-
2014
- 2014-11-20 CN CN201410665846.7A patent/CN104455467A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055037A (en) * | 2007-04-29 | 2007-10-17 | 浙江工业大学 | Magnetofluid seal driving device for vacuum equipment driving shaft |
| CN201027988Y (en) * | 2007-04-29 | 2008-02-27 | 浙江工业大学 | Magnetofluid seal driving device for vacuum equipment driving shaft |
| CN101799075A (en) * | 2010-04-12 | 2010-08-11 | 北京交通大学 | Rotation shaft combined sealing device |
| CN102720841A (en) * | 2011-12-20 | 2012-10-10 | 北京交通大学 | Large-diameter magnetic liquid rotating seal assembly method |
| CN103335063A (en) * | 2013-06-26 | 2013-10-02 | 镇江市博林光电科技有限公司 | Hermetical transmission structure of high pressure fluid magnetic coupler |
| CN103486140A (en) * | 2013-09-18 | 2014-01-01 | 浙江工业大学 | High-precision transmission device under thermal vacuum environment |
Non-Patent Citations (1)
| Title |
|---|
| 蔡建中等: "新型全封闭液化石油气泵", 《石油机械》, vol. 29, no. 1, 31 January 2001 (2001-01-31), pages 39 - 41 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |