CN104265906B - Bird wing-shaped type groove end face seal structure is imitated in gas lubrication - Google Patents
Bird wing-shaped type groove end face seal structure is imitated in gas lubrication Download PDFInfo
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- CN104265906B CN104265906B CN201410382631.4A CN201410382631A CN104265906B CN 104265906 B CN104265906 B CN 104265906B CN 201410382631 A CN201410382631 A CN 201410382631A CN 104265906 B CN104265906 B CN 104265906B
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- 238000005461 lubrication Methods 0.000 title claims abstract description 19
- 210000003746 feather Anatomy 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 241000283690 Bos taurus Species 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 8
- 238000003032 molecular docking Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 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
- F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Bird wing-shaped type groove end face seal structure is imitated in gas lubrication, comprise two sealing rings of end face seal, be rotating ring and stationary ring, in described rotating ring and stationary ring, the end face of at least one sealing ring is provided with multiple imitative bird wing-shaped type grooves, described imitative bird wing-shaped type groove is by imitating tail feathers shape type groove and imitative remex shape type groove forms, described imitative tail feathers shape type groove has the afterbody of dovetail shaped jag, described imitative remex shape type groove is roughly the cattle horn shape with butt end and tail tip, described imitative tail feathers shape type groove line is at the butt end of described imitative remex shape type groove, the butt end of thick section of described imitative remex shape type groove and described imitative tail feathers shape type groove is met to air-flow, described multiple imitative bird wing-shaped type groove is arranged in imitative bird wing-shaped type grooved ring band, between described imitative bird wing-shaped type grooved ring band, have annular time sealing dam, the low-pressure side on described end face is provided with annular primary seal dam, and the high-pressure side on described end face is provided with drainage trough, described drainage trough and imitative bird wing-shaped type groove are the shallow slot of micro-meter scale, the degree of depth of described imitative remex shape type groove shoals gradually along airflow direction. the present invention has and stablizes, resistance to wears, and the feature of long service life.
Description
Technical field:
The present invention relates to a kind of gas lubrication end surface mechanical sealing structure of rotary type fluid machine, particularlyThe imitative bird wing-shaped type groove end face seal structure of a kind of gas lubrication, is applicable to the rotations such as various compressors, pump and stillThe axle end sealing device that equipment rotating shaft is used, is particularly suitable for start and stop sealing gland frequently under mesolow or middle low speed occasionMedium shaft end seal, belongs to mechanical end face seal technical field.
Background technology:
Known Hydrodynamic pressure type groove end surface mechanical sealing, the part that also comes with some shortcomings, for example: work as helicla fluteWhile normally operation etc. type groove end face non-contact mechanical seal, face type groove produces hydrodynamic and makes face openingPower increases, and the increase of fluid thickness causes slip also raise (seeing US Patent No. 5180173); In addition when non-When contacting mechanical seal starts, because dynamic pressure opening force is crossed and lacked fluid lubrication between small end face and cause frictional heatRise and supervene wearing and tearing, be out of shape even hot tearing, therefore sealing life is shorter. In order to overcome above-mentioned deficiency,United States Patent (USP) discloses a kind of Hydrodynamic pressure type double spiral groove face seals (US5201531), the Eight charactersType screw groove end face sealing (US6152452, US6655693) and end face be provided with lubricant medium supply hole and/Or the fluid dynamic and static pressure type end side of distributing slot sealing (US7044470), the typical masterpiece of open source literature is also rightThe geometrical structure parameter optimal design of fluid dynamic and static pressure type end side sealing is studied (sees " Chinese science .EVolume-technological sciences ", the 50th volume the 4th phase: pp448-453 in 2007) and, above-mentioned end face seal is in designObvious than single-row helicla flute Hydrodynamic pressure type groove end face seal effect, but the above two are in mechanical sealStartup moment lubricant medium is difficult to enter end face, and therefore end wear is inevitable, and then both require sealing systemThe peripheral air feed of system or liquid supply pressure or flow are very accurate, have greatly increased cost and the maintenance difficulties of sealing.
Summary of the invention:
Seal face wearing and tearing when the gas lubrication non-contact mechanical seal that the present invention will overcome prior art startsCause seal failure, the too small problem that causes end face not open in time of opening force, a kind of low speed low pressure behaviour is providedDo to open under condition that performance is good, good stability, can effectively prevent from starting and the imitative bird of parking period end wearThe end face seal of wing-shaped type groove.
Technical scheme of the present invention:
Bird wing-shaped type groove end face seal structure is imitated in gas lubrication, comprises two sealing rings of end face seal, movingRing and stationary ring, is characterized in that: in described rotating ring and stationary ring, the end face of at least one sealing ring is provided with multiple imitative birdsWing-shaped type groove, described imitative bird wing-shaped type groove is by imitating tail feathers shape type groove 3 and imitative remex shape type groove 2 forms, instituteThe imitative tail feathers shape type groove 3 of stating has the afterbody of dovetail shaped jag, and described imitative remex shape type groove 2 is roughly and hasThe cattle horn shape at butt end and tail tip, described imitative tail feathers shape type groove 3 lines are at described imitative remex shape type groove 2Butt end, the butt end of thick section of described imitative remex shape type groove 2 and described imitative tail feathers shape type groove 3 is met to air-flow;Described multiple imitative bird wing-shaped type groove is arranged in imitative bird wing-shaped type grooved ring band; Described imitative bird wing-shaped type grooved ringBetween band, have annular time sealing dam 5, the low-pressure side on described end face is provided with annular primary seal dam 6, described end faceOn high-pressure side be provided with drainage trough 1; Described drainage trough and imitative bird wing-shaped type groove are the shallow slot of micro-meter scale;The degree of depth of described imitative remex shape type groove shoals gradually along airflow direction.
Further, described imitative bird wing-shaped type groove is arranged symmetrically with according to a certain circumference on end face, forms a pair of wingShape type groove, the radius R of described circumferencecSpan is: Rib-down<Rc<Rib-up, wherein Rib-downFor end faceThe outer radius of the imitative bird wing-shaped type grooved ring band of upper low-pressure side, Rib-upFor the imitative bird wing-shaped type grooved ring band in high-pressure sideInside radius.
Further, described drainage trough shoals gradually from high-pressure side to the low-pressure side degree of depth, and its high-pressure side degree of depth is 10～30 μ m, the low-pressure side degree of depth is 2～4 μ m; The groove root radius R of described drainage troughigSpan is:Rib-up≤Rig<Ro, wherein Rib-upFor the inside radius of the imitative bird wing-shaped type grooved ring band of high-pressure side Article 1, RoForEnd face outer radius.
Or further, described imitative bird wing-shaped type groove along same radial direction the high-pressure side from end face to low-pressure sideDistributed quantity be 1～10, preferred amount is 1～3.
Further, between the entrance boundary of described imitative remex shape type groove and the left margin of described imitative tail feathers shape type grooveDocking form can be one of following: slitless connection, parallel separation, non-parallel separation.
Further, described imitative tail feathers shape type groove be shaped as flying bird tail feathers shape, its border molded line can be following itOne: helix, circular arc line, straight line.
Further, described imitative remex shape type groove be shaped as remex shape, its border molded line can be one of following:Helix, circular arc line, straight line.
Further, the layout of described imitative bird wing-shaped type groove on described end face can be one of following form: singleRow's arrangement, symmetric arrays, order are arranged, asymmetric geometry.
Further, the groove depth of described imitative bird wing-shaped type groove is 0.1～100 μ m; Wherein, described imitative tail feathers shapeThe degree of depth of type groove is 8～100 μ m; The degree of depth of described imitative remex shape type groove is 0.1～100 μ m; Described imitative tailThe groove depth of plumage shape type groove is than large 0.1～2.5 μ m of the maximum groove depth of described imitative remex shape type groove.
Further, the groove depth preferred value of described imitative bird wing-shaped type groove is 1～20 μ m; Wherein, described imitative tailThe degree of depth preferred value of plumage shape type groove is 10～20 μ m; The degree of depth preferred value of described imitative remex shape type groove is 1～15μm。
The present invention is applicable to the axle end sealing device that the slewing rotating shafts such as various compressors, pump and still are used, specialBe suitable for start and stop gas medium shaft end seal frequently under mesolow or middle low speed occasion.
Advantage of the present invention is:
1. adopt imitative bird wing-shaped type groove, can further increase high-pressure area and dynamic pressure effect on end face,Therefore improve face opening performance, reduced the probability of end wear during start and stop, also can ensure sealing simultaneouslyStable unlatching operation under normal operating condition.
2. adopt imitative tail feathers shape type groove to imitate the mode that assistant shape type groove combines with deepening, can significantly improve machineTool is sealed in opening force and the rigidity when opening and running well, thereby guarantees stable, the long-life operation of sealing.
3. adopt the drainage trough shoaling gradually to low-pressure side type groove depth from high-pressure side, make medium be able to smooth streamEnter between seal face, startup or parking period have improved gas and have pumped into the force value after end face, thereby effectively anti-Not-go-end surface wear.
4. adopt the opposed arrangement of imitative bird wing-shaped type grooved ring band around a certain circumference, can reduce sealing leakWhen rate, further improve face opening characteristic and stability.
Brief description of the drawings
Fig. 1 is the end face structure schematic diagram of the embodiment of the present invention one.
Fig. 2 is the one-period schematic diagram of imitative bird wing-shaped type groove end face seal structure in the present invention.
Fig. 3 is the structural representation of the imitative bird wing-shaped type groove of the embodiment of the present invention two.
Fig. 4 is the difformity drainage trough structural representation of the embodiment of the present invention three.
Fig. 5 is that the difference of the embodiment of the present invention four is arranged imitative bird wing-shaped type grooved ring band structure schematic diagram.
Detailed description of the invention
Embodiment mono-
Referring to Fig. 1,2, bird wing-shaped type groove end face seal structure is imitated in gas lubrication, and it comprises end face sealRotating ring and stationary ring, is characterized in that: in described rotating ring and stationary ring, the end face of at least one sealing ring is provided with multiple imitativeBird wing-shaped type groove, described imitative bird wing-shaped type groove is by imitating tail feathers shape type groove 3 and imitative remex shape type groove 2 forms,Described imitative tail feathers shape type groove 3 has the afterbody of dovetail shaped jag, and described imitative remex shape type groove 2 is roughly toolHave the cattle horn shape at butt end and tail tip, described imitative tail feathers shape type groove 3 lines are at described imitative remex shape type groove 2Butt end, the butt end of thick section of described imitative remex shape type groove 2 and described imitative tail feathers shape type groove 3 is met to air-flow;Described multiple imitative bird wing-shaped type groove is arranged in imitative bird wing-shaped type grooved ring band; Described imitative bird wing-shaped type grooved ringBetween band, have annular time sealing dam 5, the low-pressure side on described end face is provided with annular primary seal dam 6, described end faceOn high-pressure side be provided with drainage trough 1; Described drainage trough and imitative bird wing-shaped type groove are the shallow slot of micro-meter scale;The degree of depth of described imitative remex shape type groove shoals gradually along airflow direction.
Further, described imitative bird wing-shaped type groove is arranged symmetrically with according to a certain circumference on end face, forms a pair of wingShape type groove, the radius R of described circumferencecSpan is: Rib-down<Rc<Rib-up, wherein Rib-downFor end faceThe outer radius of the imitative bird wing-shaped type grooved ring band of upper low-pressure side, Rib-upFor the imitative bird wing-shaped type grooved ring band in high-pressure sideInside radius.
Further, described drainage trough shoals gradually from high-pressure side to the low-pressure side degree of depth, and its high-pressure side degree of depth is 10～30 μ m, the low-pressure side degree of depth is 2～4 μ m; The groove root radius R of described drainage troughigSpan is:Rib-up≤Rig<Ro, wherein Rib-upFor the inside radius of the imitative bird wing-shaped type grooved ring band of high-pressure side Article 1, RoForEnd face outer radius.
Or further, described imitative bird wing-shaped type groove along same radial direction the high-pressure side from end face to low-pressure sideDistributed quantity be 1～10, preferred amount is 1～3.
Further, between the entrance boundary of described imitative remex shape type groove and the left margin of described imitative tail feathers shape type grooveDocking form can be one of following: slitless connection, parallel separation, non-parallel separation.
Further, described imitative tail feathers shape type groove be shaped as flying bird tail feathers shape, its border molded line can be following itOne: helix, circular arc line, straight line.
Further, described imitative remex shape type groove be shaped as remex shape, its border molded line can be one of following:Helix, circular arc line, straight line.
Further, the layout of described imitative bird wing-shaped type groove on described end face can be one of following form: singleRow's arrangement, symmetric arrays, order are arranged, asymmetric geometry.
Further, the groove depth of described imitative bird wing-shaped type groove is 0.1～100 μ m; Wherein, described imitative tail feathers shapeThe degree of depth of type groove is 8～100 μ m; The degree of depth of described imitative remex shape type groove is 0.1～100 μ m; Described imitative tailThe groove depth of plumage shape type groove is than large 0.1～2.5 μ m of the maximum groove depth of described imitative remex shape type groove.
Further, the groove depth preferred value of described imitative bird wing-shaped type groove is 1～20 μ m; Wherein, described imitative tailThe degree of depth preferred value of plumage shape type groove is 10～20 μ m; The degree of depth preferred value of described imitative remex shape type groove is 1～15μm。
The imitative bird wing-shaped type groove of the present embodiment is by imitating tail feathers shape type groove 3 and 2 seamless links of imitative remex shape type grooveComposition.
Embodiment bis-
Referring to Fig. 3, the present embodiment and embodiment mono-difference are imitative tail feathers shape type groove 3 and imitative remex shape typeType of attachment between groove 2 is one of following: parallel separation, non-parallel separation, partly overlap. All the other structuresIdentical with embodiment mono-with function.
Embodiment tri-
Referring to Fig. 4, the present embodiment and embodiment mono-difference are that drainage trough can be one of following form:Rectangular channel, T-shaped groove, U-shaped groove, V-type groove. All the other 26S Proteasome Structure and Functions are identical with embodiment mono-.
Embodiment tetra-
Referring to Fig. 5, the present embodiment and embodiment mono-difference are by imitative tail feathers shape type groove 3 and imitative remex shapeThe layout of the imitative bird wing-shaped type groove that type groove 2 forms on end face can be one of following form: single arrangement,Double in-line arrangement row, the three non-opposed arrangements of row or four row's opposed types are arranged, and wherein single arrangement is applicable to seal chamberSize or face size are less, the occasion that sealing requirements is not high; Than single arrangement, double in-line arrangement row are suitableBe used for sealing, the higher occasion of stability requirement; Three rows or four rows arrange and are applicable to sealing, stableThe occasion that property is higher. All the other 26S Proteasome Structure and Functions are identical with embodiment mono-.
Content described in this description embodiment be only way of realization to the present invention design for example, the present inventionProtection domain should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention is alsoAnd conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (10)
1. bird wing-shaped type groove end face seal structure is imitated in gas lubrication, comprises two sealing rings of end face seal,Rotating ring and stationary ring, is characterized in that: in described rotating ring and stationary ring, the end face of at least one sealing ring is provided with multiple imitativeBird wing-shaped type groove, described imitative bird wing-shaped type groove is by imitating tail feathers shape type groove (3) and imitative remex shape type groove (2)Composition, described imitative tail feathers shape type groove (3) has the afterbody of dovetail shaped jag, described imitative remex shape type groove (2)Roughly be the cattle horn shape with butt end and tail tip, described imitative tail feathers shape type groove (3) line is described imitative flyingThe butt end of plumage shape type groove (2), thick section and described imitative tail feathers shape type groove of described imitative remex shape type groove (2)(3) butt end is met to air-flow; Described multiple imitative bird wing-shaped type groove is arranged in imitative bird wing-shaped type grooved ring band;Between described imitative bird wing-shaped type grooved ring band, have annular time sealing dam (5), the low-pressure side on described end face is provided with ringShape primary seal dam (6), the high-pressure side on described end face is provided with drainage trough (1); Described drainage trough and imitative bird's wingWing shape type groove is the shallow slot of micro-meter scale; The degree of depth of described imitative remex shape type groove shoals gradually along airflow direction.
2. the imitative bird wing-shaped type groove end face seal structure of gas lubrication according to claim 1, its feature existsIn: described imitative bird wing-shaped type groove according to end face on a certain circumference be arranged symmetrically with, form a pair of wing shape type groove,The radius R of described circumferencecSpan is: Rib-down<Rc<Rib-up, wherein Rib-downFor low-pressure side on end faceThe outer radius of imitative bird wing-shaped type grooved ring band, Rib-upFor the inside radius of the imitative bird wing-shaped type grooved ring band in high-pressure side.
3. the imitative bird wing-shaped type groove end face seal structure of gas lubrication according to claim 2, its feature existsIn: described drainage trough shoals gradually from high-pressure side to the low-pressure side degree of depth, and its high-pressure side degree of depth is 10～30 μ m,The low-pressure side degree of depth is 2～4 μ m; The groove root radius R of described drainage troughigSpan is: Rib-up≤Rig<Ro，Wherein Rib-upFor the inside radius of the imitative bird wing-shaped type grooved ring band of high-pressure side Article 1, RoFor end face outer radius.
4. the imitative bird wing-shaped type groove end face seal structure of gas lubrication according to claim 3, its feature existsIn: the docking form between the entrance boundary of described imitative remex shape type groove and the left margin of described imitative tail feathers shape type grooveFor one of following: slitless connection, parallel separation, non-parallel separation.
5. the imitative bird wing-shaped type groove end face seal structure of gas lubrication according to claim 4, its feature existsIn: described imitative tail feathers shape type groove be shaped as flying bird tail feathers shape, its border molded line is one of following: helix,Circular arc line, straight line.
6. the imitative bird wing-shaped type groove end face seal structure of gas lubrication according to claim 5, its feature existsIn: described imitative remex shape type groove be shaped as remex shape, its border molded line is one of following: helix, circular arcLine, straight line.
7. the imitative bird wing-shaped type groove end face seal structure of gas lubrication according to claim 6, its feature existsIn: described imitative bird wing-shaped type groove one of following form that is arranged as on described end face: single arrangement, symmetryArrangement, order are arranged, asymmetric geometry.
8. the imitative bird wing-shaped type groove end face seal structure of gas lubrication according to claim 7, its feature existsIn: the groove depth of described imitative bird wing-shaped type groove is 0.1～100 μ m; Wherein, described imitative tail feathers shape type groove is darkDegree is 8～100 μ m; The degree of depth of described imitative remex shape type groove is 0.1～100 μ m; Described imitative tail feathers shape type grooveGroove depth is than large 0.1～2.5 μ m of the maximum groove depth of described imitative remex shape type groove.
9. the imitative bird wing-shaped type groove end face seal structure of gas lubrication according to claim 8, its feature existsIn: the groove depth of described imitative bird wing-shaped type groove is 1～20 μ m; Wherein, the degree of depth of described imitative tail feathers shape type groove is10～20 μ m; The degree of depth of described imitative remex shape type groove is 1～15 μ m.
10. the imitative bird wing-shaped type groove end face seal structure of gas lubrication according to claim 2, its featureBe: described imitative bird wing-shaped type groove along same radial direction the high-pressure side from end face to the distribution number of low-pressure sideAmount is 1～10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382631.4A CN104265906B (en) | 2014-08-06 | 2014-08-06 | Bird wing-shaped type groove end face seal structure is imitated in gas lubrication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382631.4A CN104265906B (en) | 2014-08-06 | 2014-08-06 | Bird wing-shaped type groove end face seal structure is imitated in gas lubrication |
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| CN104265906A CN104265906A (en) | 2015-01-07 |
| CN104265906B true CN104265906B (en) | 2016-05-18 |
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| CN201410382631.4A Active CN104265906B (en) | 2014-08-06 | 2014-08-06 | Bird wing-shaped type groove end face seal structure is imitated in gas lubrication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3543552A4 (en) * | 2016-11-18 | 2020-06-24 | Eagle Industry Co., Ltd. | Sliding members |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201531A (en) * | 1992-04-02 | 1993-04-13 | John Crane Inc. | Face seal with double spiral grooves |
| CN1069750C (en) * | 1997-10-17 | 2001-08-15 | 王玉明 | Screw groove end face sealing |
| CN2460801Y (en) * | 2001-01-18 | 2001-11-21 | 王玉明 | Sealing device for spiral flute end capable of bidirectional rotation |
| US6655693B2 (en) * | 2001-04-26 | 2003-12-02 | John Crane Inc. | Non-contacting gas compressor seal |
| CN103453147B (en) * | 2013-09-30 | 2016-04-13 | 四川日机密封件股份有限公司 | There is the non-contact mechanical seal ring of double rotational directions fluid dynamic pressure groove |
| CN204284454U (en) * | 2014-08-06 | 2015-04-22 | 浙江工业大学 | Bird wing-shaped type groove end face seal structure is imitated in gas lubrication |
-
2014
- 2014-08-06 CN CN201410382631.4A patent/CN104265906B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3543552A4 (en) * | 2016-11-18 | 2020-06-24 | Eagle Industry Co., Ltd. | Sliding members |
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