CN202402644U - Floating ring sealing device - Google Patents
Floating ring sealing device Download PDFInfo
- Publication number
- CN202402644U CN202402644U CN2011205687680U CN201120568768U CN202402644U CN 202402644 U CN202402644 U CN 202402644U CN 2011205687680 U CN2011205687680 U CN 2011205687680U CN 201120568768 U CN201120568768 U CN 201120568768U CN 202402644 U CN202402644 U CN 202402644U
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- CN
- China
- Prior art keywords
- ring
- floating
- sealing
- floating ring
- float
- 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.)
- Expired - Lifetime
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to a floating ring sealing device, which comprises a sealing seat, a front baffle plate, a retainer ring and a floating ring component. The inner diameter of the floating ring component and the outer diameter of a rotor form a main sealing surface, the floating ring component clings to the sealing seat and the front baffle plate to form a secondary sealing surface, the floating ring component consists of a floating outer ring and a floating inner ring, the floating outer ring is made of a metal material, the floating inner ring is made of a C/C (carbon/carbon) composite material, and the outer diameter of the floating inner ring and the inner diameter of the floating outer ring form an integral floating ring structure by means of interference fit. In addition, a plurality of decompression grooves are peripherally arranged on the secondary sealing surface on two sides of the floating inner ring in the floating ring sealing device, and a plurality of sealing dams are formed at two radial ends of each decompression groove. The wear resistance of a sealing ring can be increased, the service life of a floating ring seal is prolonged, and performance reliability of the floating ring seal is improved. Besides, the sealing device is simple in structure, light in weight and easy in processing, and can be used for sealing various rotary shaft ends, or sealing devices can be combined to be used for sealing a bearing cavity.
Description
Technical field
The utility model relates to a kind of float ring seal device.
Background technique
Float ring seal is a kind of noncontact seal device, and the leakage through fluid is obturaged in throttling action control in gap is widely used in the gas circuit in the gas turbine engine, or the oil/hermetic seal of bearing bore.In the float ring seal work; Flowing of the fluid of obturaging in the primary seal gap produces dynamic pressure lift to seal ring, when uplift greater than floating ring gravity, simultaneously; Can overcome the frictional force of floating ring and sealing seat secondary seal face; And during the floating ring rotator inertia, floating ring will produce the fluid film floating effect, form noncontact seal.
Typical case's float-ring sealing device is to use graphite material as floating ring, and the applied metal material is also arranged, and teflon etc. are nonmetal, or in the floating ring structure of metallic material back boxing nonmetallic material.For the most frequently used graphite material, when air film was not enough to the uplift of floating ring, obturage interface and rotor of floating ring bumped mill, wearing and tearing very easily occur.Simultaneously, the intensity of graphite material is lower, and when rotor axial play or circular runout took place, floating ring was prone to be damaged, and this type of accident takes place in the using process of gas turbine machinery repeatedly.Metal or nonmetallic material for other are made floating ring, often exist weight big, the defective on intensity, the performance such as high temperature resistant, wear-resisting and anticorrosive.
The model utility content
The utility model technical problem to be solved is: a kind of float ring seal device is provided, makes it can adapt to high temperature, High Pressure Difference, high rotating speed operating mode, during transient state bad working environments such as the skew of beating at the reply rotor, still can keep good seal performance and the life-span.
The technological scheme of the utility model is: a kind of float ring seal device; Comprise sealing seat, front screen, collar and floating ring assembly; Floating ring assembly internal diameter and rotor diameter constitute primary sealing area; Floating ring component joint sealing seat and front screen constitute the secondary seal face, it is characterized in that: the unsteady outer shroud that said floating ring assembly is processed by metallic material and C/C composite material are processed float in ring forms, float outside diameter of inner ring and unsteady bore diameter of outer ring become one to put in order and enclose the floating ring structure through interference fit.
The secondary seal face upper edge of ring both sides circumferentially has some decompressing grooves in floating in the above-mentioned float ring seal device, and the radially two ends of decompressing groove form the sealing dam.
The useful achievement of the utility model: the float ring seal device that the utility model provided; Its floating ring assembly is made up of the unsteady outer shroud and the interior ring that floats; Ring adopts the C/C composite material to make in floating, and with respect to graphite material, density is lower, intensity is higher; Friction factor is also littler, has the damaged ability of better wear resistance ability and shock resistance; When the floating ring assembly produces relative movement with respect to sealing seat, through the interior decompressing groove and the design of sealing dam that encircles both sides that float, can reduce the rubbing contact area, the reduction floating ring weares and teares, heat is produced, thereby guarantees its seal performance, prolongs its working life.
Description of drawings
Fig. 1 is the utility model float ring seal apparatus structure schematic representation;
Wherein, ring, 7-sealing dam, 8-decompressing groove in 1-rotor, 2-front screen, 3-collar, 4-sealing seat, the unsteady outer shroud of 5-, 6-float.
Embodiment
Fig. 1 shows float ring seal device embodiment, comprises sealing seat 1, front screen 2, collar 3, floating ring assembly.Floating ring assembly internal diameter and rotor 1 external diameter joint place constitute primary sealing area, and the pressurized gas of hyperbaric chamber PH promote the floating ring assembly and move to low pressure chamber PL, make the floating ring assembly be close to sealing seat and form the secondary seal face.
The floating ring assembly is made up of ring 6, the outer shroud 5 that floats in floating; Wherein, the outer shroud 5 that floats is the stainless steel metal material, and ring 6 is the C/C composite material in floating; Unsteady outer shroud 5 internal diameters are interference fit with interior ring 6 external diameters that float under the normal temperature, are hot pressed into the floating ring structure of whole circle at a certain temperature.Ring 6 fitted in one in the floating ring assembly floated with the C/C composite material through the unsteady outer shroud 5 of metal, can improve assembly intensity.Along with the rising of temperature, the thermal expansion factor of inside and outside ring is different, can offset the initial interference of part, and the floating ring assembly still has good binding intensity.Unsteady assembly left and right sides symmetrical configuration does not have specific installation direction, can adapt to positive and negative pressure.
Be processed with decompressing groove 8 on the secondary seal face of ring both sides in floating, under the positive and negative pressure effect, the area of contact of ring 6 and sealing seat 4, front screen 2 in can reducing to float, design decompressing groove 8 dark 0.15～0.3mm.The radially inside and outside two ends of the decompressing groove 8 of ring both sides are two sealing dams 7 in floating, and each seals dam radial width 0.7～1.5mm.
The gap that sealing seat 4 internal diameters and rotor 1 outer surface form is downstream baffle plate protection height H 1, and the gap H2 that front screen and rotor outer surface form is not less than H1.Floating ring assembly external diameter and sealing seat 4 inwall spacing H3 are not less than H1, and H1 gets 0.5～0.8mm.
The utility model float ring sealing structure, it is simple in structure, easy processing, the seal performance that has favorable and stable simultaneously has certain application value.
Claims (5)
1. float ring seal device; Comprise sealing seat (4), front screen (2), collar (3) and floating ring assembly; Floating ring assembly internal diameter and rotor (1) external diameter constitutes primary sealing area; Floating ring component joint sealing seat (4) and front screen (2) constitute the secondary seal face, it is characterized in that: the unsteady outer shroud (5) that said floating ring assembly is processed by metallic material and C/C composite material are processed float in ring (6) forms, ring (6) external diameter and unsteady outer shroud (5) internal diameter become one to put in order and enclose the floating ring structure through interference fit in floating.
2. float ring seal device according to claim 1 is characterized in that: the secondary seal face upper edge of ring (6) both sides circumferentially has some decompressing grooves (8) in said the floating, and the radially two ends of decompressing groove form sealing dam (7).
3. float ring seal device according to claim 1 and 2 is characterized in that: ring (6) one sides are close to sealing seat (4) in said the floating, and the maximum axial gap L 1 of an other side and front screen (2) is 0.10～0.25mm.
4. float ring seal device according to claim 2 is characterized in that: the dark 0.15～0.3mm of said decompressing groove (8), the wide 0.7～1.5mm in said sealing dam (7).
5. float ring seal device according to claim 2 is characterized in that: floating ring assembly left and right sides symmetrical configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205687680U CN202402644U (en) | 2011-12-31 | 2011-12-31 | Floating ring sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205687680U CN202402644U (en) | 2011-12-31 | 2011-12-31 | Floating ring sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202402644U true CN202402644U (en) | 2012-08-29 |
Family
ID=46700293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205687680U Expired - Lifetime CN202402644U (en) | 2011-12-31 | 2011-12-31 | Floating ring sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202402644U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939607A (en) * | 2013-01-22 | 2014-07-23 | 天华化工机械及自动化研究设计院有限公司 | Integrated shaft end sealing device |
| CN104500743A (en) * | 2014-12-15 | 2015-04-08 | 中国燃气涡轮研究院 | Sealing device between reverse-rotating shafts |
| CN105114353A (en) * | 2015-08-21 | 2015-12-02 | 北京航天动力研究所 | Rayleigh groove type floating ring sealing device for hydrogen oxygen engine turbopump |
| CN105276192A (en) * | 2014-10-16 | 2016-01-27 | 侯玉杰 | Manufacturing method for carbon-graphite floating ring |
| CN105508620A (en) * | 2016-01-18 | 2016-04-20 | 沈阳航空航天大学 | Self-centering sealing piece for achieving floating through gas pressure difference action and mounting method of self-centering sealing piece |
| CN105814345A (en) * | 2013-12-13 | 2016-07-27 | Sms集团有限公司 | Sealing arrangement for radially loaded round guides |
| CN109342046A (en) * | 2018-12-13 | 2019-02-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of seal assembly floating performance Online Transaction Processing |
| CN110285219A (en) * | 2019-06-28 | 2019-09-27 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of efficient double zero leakage float-ring sealing device |
| CN113494610A (en) * | 2021-07-08 | 2021-10-12 | 西华大学 | Floating ring structure with damping support and mechanical sealing device |
-
2011
- 2011-12-31 CN CN2011205687680U patent/CN202402644U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939607A (en) * | 2013-01-22 | 2014-07-23 | 天华化工机械及自动化研究设计院有限公司 | Integrated shaft end sealing device |
| CN103939607B (en) * | 2013-01-22 | 2016-06-29 | 天华化工机械及自动化研究设计院有限公司 | A kind of integration type shaft end sealing device |
| CN105814345A (en) * | 2013-12-13 | 2016-07-27 | Sms集团有限公司 | Sealing arrangement for radially loaded round guides |
| CN105276192A (en) * | 2014-10-16 | 2016-01-27 | 侯玉杰 | Manufacturing method for carbon-graphite floating ring |
| CN104500743A (en) * | 2014-12-15 | 2015-04-08 | 中国燃气涡轮研究院 | Sealing device between reverse-rotating shafts |
| CN105114353A (en) * | 2015-08-21 | 2015-12-02 | 北京航天动力研究所 | Rayleigh groove type floating ring sealing device for hydrogen oxygen engine turbopump |
| CN105508620A (en) * | 2016-01-18 | 2016-04-20 | 沈阳航空航天大学 | Self-centering sealing piece for achieving floating through gas pressure difference action and mounting method of self-centering sealing piece |
| CN109342046A (en) * | 2018-12-13 | 2019-02-15 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of seal assembly floating performance Online Transaction Processing |
| CN110285219A (en) * | 2019-06-28 | 2019-09-27 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of efficient double zero leakage float-ring sealing device |
| CN113494610A (en) * | 2021-07-08 | 2021-10-12 | 西华大学 | Floating ring structure with damping support and mechanical sealing device |
| CN113494610B (en) * | 2021-07-08 | 2023-06-27 | 西华大学 | Floating ring structure with damping support and mechanical sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |