CN204284454U - 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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- CN204284454U CN204284454U CN201420438739.6U CN201420438739U CN204284454U CN 204284454 U CN204284454 U CN 204284454U CN 201420438739 U CN201420438739 U CN 201420438739U CN 204284454 U CN204284454 U CN 204284454U
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- 238000005461 lubrication Methods 0.000 title claims abstract description 19
- 210000003746 feather Anatomy 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 241000283690 Bos taurus Species 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 8
- 238000003491 array Methods 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 4
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 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
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Bird wing-shaped type groove end face seal structure is imitated in gas lubrication, comprise two seal rings of end face seal, i.e. rotating ring and stationary ring, in described rotating ring and stationary ring, the end face of at least one seal ring is provided with multiple imitative bird wing-shaped type groove, 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 in 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 thick section of described imitative remex shape type groove and the butt end of described imitative tail feathers shape type groove are met to air-flow, described multiple imitative bird wing-shaped type groove is arranged in imitative bird wing-shaped type grooved ring band, have annular time sealing dam between described imitative bird wing-shaped type grooved ring band, the low voltage 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 utility model has to be stablized, and resistance to wears, the feature of long service life.
Description
Technical field:
The utility model relates to a kind of gas lubrication end surface mechanical sealing structure of rotary type fluid machine, bird wing-shaped type groove end face seal structure is imitated in particular to a kind of gas lubrication, be applicable to the shaft end seal device of the rotating equipment rotating shafts such as various compressor, pump and still, be particularly suitable for start and stop sealing gland medium shaft end seal frequently under mesolow or middle low speed occasion, belong to mechanical end face seal technical field.
Background technique:
Known Hydrodynamic pressure type groove end surface mechanical sealing, also come with some shortcomings part, such as: when the type groove end face non-contact mechanical seals such as spiral chute normally run, face type groove produces hydrodynamic and face opening power is increased, and the increase of fluid thickness causes leak-down rate also to raise (see US Patent No. 5180173); In addition when non-contact mechanical seal starts, cross due to dynamic pressure opening force and lack fluid lubrication between small end face and cause frictional heat to rise and supervene wearing and tearing, be out of shape even hot tearing, therefore sealing life is shorter.In order to overcome above-mentioned deficiency, U.S. patents disclose a kind of Hydrodynamic pressure type double spiral groove face seals (US5201531), splayed configuration screw groove end face sealing (US6152452, US6655693) and end face be provided with lubricant medium supply hole and/or distributing slot fluid active and static pressure type end side sealing (US7044470), the typical masterpiece of the open source literature geometrical structure parameter optimal design that also convection cell active and static pressure type end side seals is studied (see " Chinese science .E collects-technological sciences ", 50th volume the 4th phase: pp448-453 in 2007), above-mentioned end face seal is obvious compared to single-row spiral chute Hydrodynamic pressure type groove end face seal effectiveness comparison in design, but the above two start lubricant medium instantaneously in mechanical seal and are difficult to enter end face, therefore end wear is inevitable, then both require that the peripheral air feed of sealing system or liquid supply pressure or flow are very accurate, considerably increase cost and the maintenance difficulties of sealing.
Summary of the invention:
When the gas lubrication non-contact mechanical seal that the utility model will overcome prior art starts, seal face wearing and tearing cause seal failure, the too small problem causing end face not open in time of opening force, open that performance is good, good stability, can effectively prevent from starting and the imitative bird wing-shaped type groove end face seal of parking period end wear under providing a kind of low speed low-voltage operating conditions.
The technical solution of the utility model:
Bird wing-shaped type groove end face seal structure is imitated in gas lubrication, comprise two seal rings of end face seal, i.e. rotating ring and stationary ring, it is characterized in that: in described rotating ring and stationary ring, the end face of at least one seal ring is provided with multiple imitative bird 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, described imitative remex shape type groove 2 is roughly in the cattle horn shape with butt end and tail tip, described imitative tail feathers shape type groove 3 line is at the butt end of described imitative remex shape type groove 2, the thick section of described imitative remex shape type groove 2 and the butt end of described imitative tail feathers shape type groove 3 are met to air-flow, described multiple imitative bird wing-shaped type groove is arranged in imitative bird wing-shaped type grooved ring band, have annular time sealing dam 5 between described imitative bird wing-shaped type grooved ring band, the low voltage side on described end face is provided with annular primary seal dam 6, and the high pressure side on described end face is 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 circumference a certain on end face, forms a pair wing shape type groove, the radius R of described circumference
cspan is: R
ib-down<R
c<R
ib-up, wherein R
ib-downfor low voltage side on end face imitates the outer radius of bird wing-shaped type grooved ring band, R
ib-upfor the inside radius of bird wing-shaped type grooved ring band is imitated in high pressure side.
Further, described drainage trough shoals gradually from high pressure side to the low voltage side degree of depth, and its high pressure side degree of depth is 10 ~ 30 μm, and the low voltage side degree of depth is 2 ~ 4 μm; The groove root radius R of described drainage trough
igspan is: R
ib-up≤ R
ig<R
o, wherein R
ib-upfor high pressure side Article 1 imitates the inside radius of bird wing-shaped type grooved ring band, R
ofor end face outer radius.
Or further, described imitative bird wing-shaped type groove is 1 ~ 10 along same radial direction from the high pressure side end face to the distributed quantity of low voltage side, and preferred amount is 1 ~ 3.
Further, 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 groove can be one of following: slitless connection, parallel separation, non-parallel separation.
Further, the shape of described imitative tail feathers shape type groove is flying bird tail feathers shape, and its border molded line can be one of following: helix, circular arc line, straight line.
Further, the shape of described imitative remex shape type groove is remex shape, and its border molded line can be one of following: helix, circular arc line, straight line.
Further, described imitative bird wing-shaped type groove layout on the end surface can be one of following form: single arrangement, symmetric arrays, order arrangement, asymmetric geometry.
Further, the groove depth of described imitative bird wing-shaped type groove is 0.1 ~ 100 μm; Wherein, the degree of depth of described imitative tail feathers shape type groove is 8 ~ 100 μm; The degree of depth of described imitative remex shape type groove is 0.1 ~ 100 μm; The groove depth of described imitative tail feathers shape type groove is than large 0.1 ~ 2.5 μm 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 μm; Wherein, the degree of depth preferred value of described imitative tail feathers shape type groove is 10 ~ 20 μm; The degree of depth preferred value of described imitative remex shape type groove is 1 ~ 15 μm.
The utility model is applicable to the shaft end seal device of the rotating equipment rotating shafts such as various compressor, pump and still, is particularly suitable for start and stop gas medium shaft end seal frequently under mesolow or middle low speed occasion.
The utility model has the advantages that:
1. adopt imitative bird wing-shaped type groove, the high-pressure area on end face and dynamic pressure effect can be increased further, therefore improve face opening performance, the probability of end wear during reducing start and stop, also can ensure that the stable unlatching sealed in normal operation condition runs simultaneously.
2. adopting imitative tail feathers shape type groove and the mode deepening imitative assistant shape type groove and combine, the opening force of mechanical seal when opening and run well and rigidity can being significantly improved, thus guarantee stable, the long lifetime operation that seal.
3. adopt from high pressure side to the drainage trough that low voltage side type groove depth shoals gradually, medium flowed between seal face smoothly, start or parking period improve gas pump into end face after force value, thus effectively prevent end wear.
4. adopt imitative bird wing-shaped type grooved ring band around the opposed arrangement of a certain circumference, face opening characteristic and stability can be improved further while reduction seal leakage rate.
Accompanying drawing explanation
Fig. 1 is the end-face structure schematic diagram of the utility model embodiment one.
Fig. 2 is the one-period schematic diagram of imitative bird wing-shaped type groove end face seal structure in the utility model.
Fig. 3 is the structural representation of the imitative bird wing-shaped type groove of the utility model embodiment two.
Fig. 4 is the difformity drainage trough structural representation of the utility model embodiment three.
Fig. 5 is the imitative bird wing-shaped type grooved ring band structure schematic diagram of difference arrangement of the utility model embodiment four.
Embodiment
Embodiment one
See Fig. 1, 2, bird wing-shaped type groove end face seal structure is imitated in gas lubrication, it comprises rotating ring and the stationary ring of end face seal, it is characterized in that: in described rotating ring and stationary ring, the end face of at least one seal ring is provided with multiple imitative bird 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, described imitative remex shape type groove 2 is roughly in the cattle horn shape with butt end and tail tip, described imitative tail feathers shape type groove 3 line is at the butt end of described imitative remex shape type groove 2, the thick section of described imitative remex shape type groove 2 and the butt end of described imitative tail feathers shape type groove 3 are met to air-flow, described multiple imitative bird wing-shaped type groove is arranged in imitative bird wing-shaped type grooved ring band, have annular time sealing dam 5 between described imitative bird wing-shaped type grooved ring band, the low voltage side on described end face is provided with annular primary seal dam 6, and the high pressure side on described end face is 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 circumference a certain on end face, forms a pair wing shape type groove, the radius R of described circumference
cspan is: R
ib-down<R
c<R
ib-up, wherein R
ib-downfor low voltage side on end face imitates the outer radius of bird wing-shaped type grooved ring band, R
ib-upfor the inside radius of bird wing-shaped type grooved ring band is imitated in high pressure side.
Further, described drainage trough shoals gradually from high pressure side to the low voltage side degree of depth, and its high pressure side degree of depth is 10 ~ 30 μm, and the low voltage side degree of depth is 2 ~ 4 μm; The groove root radius R of described drainage trough
igspan is: R
ib-up≤ R
ig<R
o, wherein R
ib-upfor high pressure side Article 1 imitates the inside radius of bird wing-shaped type grooved ring band, R
ofor end face outer radius.
Or further, described imitative bird wing-shaped type groove is 1 ~ 10 along same radial direction from the high pressure side end face to the distributed quantity of low voltage side, and preferred amount is 1 ~ 3.
Further, 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 groove can be one of following: slitless connection, parallel separation, non-parallel separation.
Further, the shape of described imitative tail feathers shape type groove is flying bird tail feathers shape, and its border molded line can be one of following: helix, circular arc line, straight line.
Further, the shape of described imitative remex shape type groove is remex shape, and its border molded line can be one of following: helix, circular arc line, straight line.
Further, described imitative bird wing-shaped type groove layout on the end surface can be one of following form: single arrangement, symmetric arrays, order arrangement, asymmetric geometry.
Further, the groove depth of described imitative bird wing-shaped type groove is 0.1 ~ 100 μm; Wherein, the degree of depth of described imitative tail feathers shape type groove is 8 ~ 100 μm; The degree of depth of described imitative remex shape type groove is 0.1 ~ 100 μm; The groove depth of described imitative tail feathers shape type groove is than large 0.1 ~ 2.5 μm 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 μm; Wherein, the degree of depth preferred value of described imitative tail feathers shape type groove is 10 ~ 20 μm; The degree of depth preferred value of described imitative remex shape type groove is 1 ~ 15 μm.
The imitative bird wing-shaped type groove of the present embodiment is by imitating tail feathers shape type groove 3 and the seamless link of imitative remex shape type groove 2 forms.
Embodiment two
See Fig. 3, that to be the Connecting format between imitative tail feathers shape type groove 3 and imitative remex shape type groove 2 be is one of following for the present embodiment and embodiment one difference: parallel separation, non-parallel separation, partly overlap.All the other 26S Proteasome Structure and Functions are identical with embodiment one.
Embodiment three
See Fig. 4, the present embodiment and embodiment one difference are drainage troughs can be one of following form: rectangle groove, T-slot, U-type groove, V-type groove.All the other 26S Proteasome Structure and Functions are identical with embodiment one.
Embodiment four
See Fig. 5, the layout of the imitative bird wing-shaped type groove that the present embodiment and embodiment one difference are made up of imitative tail feathers shape type groove 3 and imitative remex shape type groove 2 on end face can one of for following form: single arrangement, double in-line arrangement arrange, three arrange non-opposed arrangement or four and arrange opposed type and arrange, wherein single arrangement be applicable to seal chamber size or face size less, the occasion that sealing requirements is not high; Compared to single arrangement, double in-line arrangement row are applicable to the occasion higher to sealing, stability requirement; Three rows or four row's arrangements are then applicable to sealing, occasion that stability is higher.All the other 26S Proteasome Structure and Functions are identical with embodiment one.
Content described in this specification embodiment is only the citing of the way of realization to the utility model design; protection domain of the present utility model should not be regarded as being only limitted to the concrete form that embodiment states, protection domain of the present utility model also and conceive the equivalent technologies means that can expect according to the utility model in those skilled in the art.
Claims (10)
1. bird wing-shaped type groove end face seal structure is imitated in gas lubrication, comprise two seal rings of end face seal, i.e. rotating ring and stationary ring, it is characterized in that: in described rotating ring and stationary ring, the end face of at least one seal ring is provided with multiple imitative bird 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, described imitative remex shape type groove (2) is roughly in the cattle horn shape with butt end and tail tip, described imitative tail feathers shape type groove (3) line is at the butt end of described imitative remex shape type groove (2), the thick section of described imitative remex shape type groove (2) and the butt end of described imitative tail feathers shape type groove (3) are met to air-flow, described multiple imitative bird wing-shaped type groove is arranged in imitative bird wing-shaped type grooved ring band, have annular time sealing dam (5) between described imitative bird wing-shaped type grooved ring band, the low voltage side on described end face is provided with annular primary seal dam (6), and the high pressure side on described end face is 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.
2. bird wing-shaped type groove end face seal structure is imitated in gas lubrication according to claim 1, it is characterized in that: described imitative bird wing-shaped type groove is arranged symmetrically with according to circumference a certain on end face, forms a pair wing shape type groove, the radius R of described circumference
cspan is: R
ib-down< R
c< R
ib-up, wherein R
ib-downfor low voltage side on end face imitates the outer radius of bird wing-shaped type grooved ring band, R
ib-upfor the inside radius of bird wing-shaped type grooved ring band is imitated in high pressure side.
3. bird wing-shaped type groove end face seal structure is imitated in gas lubrication according to claim 2, and it is characterized in that: described drainage trough shoals gradually from high pressure side to the low voltage side degree of depth, its high pressure side degree of depth is 10 ~ 30 μm, and the low voltage side degree of depth is 2 ~ 4 μm; The groove root radius R of described drainage trough
igspan is: R
ib-up≤ R
ig< R
o, wherein R
ib-upfor high pressure side Article 1 imitates the inside radius of bird wing-shaped type grooved ring band, R
ofor end face outer radius.
4. bird wing-shaped type groove end face seal structure is imitated in gas lubrication according to claim 3, it is characterized in that: 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 groove can for one of following: slitless connection, parallel separation, non-parallel separation.
5. bird wing-shaped type groove end face seal structure is imitated in gas lubrication according to claim 4, it is characterized in that: the shape of described imitative tail feathers shape type groove is flying bird tail feathers shape, and its border molded line can be one of following: helix, circular arc line, straight line.
6. bird wing-shaped type groove end face seal structure is imitated in gas lubrication according to claim 5, it is characterized in that: the shape of described imitative remex shape type groove is remex shape, and its border molded line can be one of following: helix, circular arc line, straight line.
7. bird wing-shaped type groove end face seal structure is imitated in gas lubrication according to claim 6, it is characterized in that: described imitative bird wing-shaped type groove layout on the end surface can be one of following form: single arrangement, symmetric arrays, order arrangement, asymmetric geometry.
8. bird wing-shaped type groove end face seal structure is imitated in gas lubrication according to claim 7, it is characterized in that: the groove depth of described imitative bird wing-shaped type groove is 0.1 ~ 100 μm; Wherein, the degree of depth of described imitative tail feathers shape type groove is 8 ~ 100 μm; The degree of depth of described imitative remex shape type groove is 0.1 ~ 100 μm; The groove depth of described imitative tail feathers shape type groove is than large 0.1 ~ 2.5 μm of the maximum groove depth of described imitative remex shape type groove.
9. bird wing-shaped type groove end face seal structure is imitated in gas lubrication according to claim 8, it is characterized in that: the groove depth preferred value of described imitative bird wing-shaped type groove is 1 ~ 20 μm; Wherein, the degree of depth preferred value of described imitative tail feathers shape type groove is 10 ~ 20 μm; The degree of depth preferred value of described imitative remex shape type groove is 1 ~ 15 μm.
10. bird wing-shaped type groove end face seal structure is imitated in gas lubrication according to claim 2, it is characterized in that: described imitative bird wing-shaped type groove along same radial direction from the high pressure side end face to the distributed quantity of low voltage side be 1 ~ 10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438739.6U CN204284454U (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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|---|---|---|---|
| CN201420438739.6U CN204284454U (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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| CN204284454U true CN204284454U (en) | 2015-04-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265906A (en) * | 2014-08-06 | 2015-01-07 | 浙江工业大学 | Gas lubrication bird-wing-shape-imitation v groove end face sealing structure |
| CN107314112A (en) * | 2017-07-24 | 2017-11-03 | 浙江工业大学 | A kind of mechanical seal end surface structure of sharpening disk texture |
| CN110566794A (en) * | 2019-09-09 | 2019-12-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Lubricating structure and mechanical lubricating device with same |
-
2014
- 2014-08-06 CN CN201420438739.6U patent/CN204284454U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265906A (en) * | 2014-08-06 | 2015-01-07 | 浙江工业大学 | Gas lubrication bird-wing-shape-imitation v groove end face sealing structure |
| CN107314112A (en) * | 2017-07-24 | 2017-11-03 | 浙江工业大学 | A kind of mechanical seal end surface structure of sharpening disk texture |
| CN110566794A (en) * | 2019-09-09 | 2019-12-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Lubricating structure and mechanical lubricating device with same |
| CN110566794B (en) * | 2019-09-09 | 2020-12-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Lubricating structure and mechanical lubricating device with same |
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