CN204025686U - The imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould mechanical seal - Google Patents
The imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould mechanical seal Download PDFInfo
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- CN204025686U CN204025686U CN201420439332.5U CN201420439332U CN204025686U CN 204025686 U CN204025686 U CN 204025686U CN 201420439332 U CN201420439332 U CN 201420439332U CN 204025686 U CN204025686 U CN 204025686U
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- type groove
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 19
- 210000003746 feather Anatomy 0.000 claims abstract description 20
- 241000283690 Bos taurus Species 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 20
- 239000012530 fluid Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- 238000010276 construction 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
- 239000011664 nicotinic acid Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000007812 deficiency Effects 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
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould mechanical seal, comprise two seal rings of mechanical seal, be 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 grooves, the shallow slot that described imitative bird wing-shaped type groove is micro-meter scale, 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, imitative bird wing-shaped type groove described in every two forms groove pair according to splayed shape, and some grooves are to being arranged in imitative bird wing-shaped type grooved ring band along even circumferential, and imitative bird wing-shaped type grooved ring band is opened the high pressure side at described end face, the degree of depth of described imitative remex shape type groove shoals gradually along airflow direction.The utlity model has applicable bidirectional rotation, opening feature excellence, good stability, resistance to wear, 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 the fluid machinery that may produce bidirectional rotation, be particularly related to the imitative bird wing-shaped type groove structure of a kind of gas sound die mould mechanical seal, be applicable to the shaft end seal device that the rotating equipment rotating shafts such as various compressors, pump and still are used, the gas medium shaft end seal that is particularly suitable for various different pressures, different rotating speeds, belongs to mechanical end face seal technical field.
Background technique:
Known bidirectional rotation Hydrodynamic pressure type groove end surface mechanical sealing, part also comes with some shortcomings, for example: U. S. Patent discloses various new Hydrodynamic pressure type double spiral groove face seals (US5201531, US20020093141A1, US20070187904A1), splayed configuration screw groove end face sealing (US6152452, US6655693) and end face be provided with the fluid active and static pressure type end side sealing (US7044470) of lubricant medium supply hole and/or distributing slot, 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 (sees " collect-technological sciences of Chinese science .E ", the 50th volume the 4th phase: pp448-453 in 2007), above-mentioned end face seal is obvious than single-row spiral chute Hydrodynamic pressure type groove end face seal effect in design, but the structure that patent US5201531 and US6152452 announce is difficult to enter end face at mechanical seal startup moment lubricant medium, therefore end wear is inevitable, and the seal arrangement that patent US6655693 and US7044470 announce requires the peripheral air feed of sealing system or liquid supply pressure or flow very accurate, greatly increase cost and the maintenance difficulties of sealing, US20070187904A1 requires end face to carry out complicated processing, in its working principle, owes distinct, and than more complex based on spiral fluted bidirectional rotation dry gas seals, practicability is poor.Patent US20020093141A1 is a kind of Novel dry hermetic seal, successfully puts into operation and puts it over through scene, remains so far the key product (www.johncrane.com) of sealing MANUFACTURER JohnCrane the biggest in the world company.Use the utility model based on bionic principle and theory of fluid lubrication, be characterized as reference with flying bird wing profile geometrical construction, overcome the deficiency of above-mentioned bidirectional rotation dry gas end face seal, model utility realizes the new gas sound die mould mechanical seal of the imitative bird wing-shaped type groove structure of bidirectional rotation.
Summary of the invention:
The utility model will overcome existing most gas lubrication non-contact mechanical seal technology, and in the time that sealing starts, end face bleed is not in time, in groove, gas pressure is difficult to effective foundation, face opening power is too small or open the end face dry wear that not in time etc. a difficult problem causes, sealing stability is not good enough or antijamming capability is poor, the on-the-spot problem of sealing shorter grade in working life, based on bionic principle and theory of fluid lubrication, be characterized as reference with flying bird wing profile geometrical construction, provide a kind of performance of opening good, good stability, can effectively prevent the imitative bird wing-shaped type groove end face seal at startup and parking period end wear, can meet the demand of different pressures and different rotating speeds operational condition.
The technical solution of the utility model:
The imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould mechanical seal, comprise two seal rings of mechanical seal, be 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 grooves, the shallow slot that described imitative bird wing-shaped type groove is micro-meter scale, 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, between described imitative bird wing-shaped type groove, have sealing weir, described end face unslotted endless belt part forms sealing dam, imitative bird wing-shaped type groove described in every two forms groove pair according to splayed shape, and some grooves are to being arranged in imitative bird wing-shaped type grooved ring band along even circumferential, and imitative bird wing-shaped type grooved ring band is opened the high pressure side at described end face, 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 butterfly-like type groove, looping time sealing dam between described imitative bird wing-shaped type grooved ring band.
Further, two imitative bird wing-shaped type grooves of described groove centering can separate, and can be also seamless links.
Further, described imitative bird wing-shaped type grooved ring band number is no less than two, radially forms two-stage or when multi-stage sealed, and the tail tip part of the most close on high-tension side imitative remex tail shape type groove is connected with high pressure side and is truncated and forms wide width wing suction port.
Further, described imitative tail feathers shape type groove to be shaped as tail feathers wing, its border molded line can be one of following: 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 groove depth of described imitative bird wing-shaped type groove is 0.1～100 μ m, and along same radial direction, the high pressure side from end face is 1～10 to the distributed quantity of low voltage side to described imitative bird wing-shaped type groove.
Further, the groove depth preferred value of described imitative bird wing-shaped type groove is 3～18 μ m; Along same radial direction, the high pressure side from end face is 2～4 to the preferred amount of low voltage side to described imitative bird wing-shaped type groove.
The utility model is applicable to the shaft end seal device that under the operational conditions such as various different pressures, different rotating speeds, rotating fluid mechanical rotating shaft is used.
The utility model has the advantages that:
1. adopt imitative bird wing-shaped type groove, air-flow can be set up the high pressure areal in even wide territory at type groove bottom, thereby further increase high-pressure area and dynamic pressure effect on whole seal face, therefore face opening performance and antijamming capability have been improved, reduce the probability of end wear during start and stop, also can ensure to be sealed in the stable unlatching operation under normal operating conditions simultaneously.
2. adopt imitative tail feathers shape type groove and deepen the mode that remex shape type groove combines of imitating, and the imitative bird wing-shaped type grooved ring band of employing is along one-level or secondary and even the multistage opposed arrangement of seal face, in strengthening the first advantage, also will significantly reduce the leakage of mechanical seal between normal operation and disturbance on-stream period, thereby improve stable, the long lifetime operation of guaranteeing sealing.
3. adopt the drainage trough shoaling gradually to low voltage side type groove depth from high pressure side, medium is flowed between seal face smoothly, startup or parking period have improved gas and have pumped into the force value after end face, thereby effectively prevent end wear.
Brief description of the drawings
Fig. 1 is the imitative bird wing-shaped type grooved ring band end face structural representation of the utility model divergence type splayed shape.
Fig. 2 is the imitative bird wing-shaped type grooved ring band end face structural representation of the utility model connected type splayed shape.
Fig. 3 is the imitative bird wing-shaped type grooved ring band end face structural representation of the utility model divergence type butterfly shape.
Fig. 4 is the imitative bird wing-shaped type grooved ring band end face structural representation of the utility model connected type butterfly shape.
Fig. 5 is radially three grades of imitative bird wing-shaped type grooved ring band end face structural representations of the utility model.
Embodiment
Referring to Fig. 1 to Fig. 5, the imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould mechanical seal, it comprises rotating ring and the stationary ring of mechanical seal, it is characterized in that: in described rotating ring and stationary ring, the end face 1 of at least one seal ring is provided with multiple imitative bird wing-shaped type grooves, the shallow slot that described imitative bird wing-shaped type groove is micro-meter scale, 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 the cattle horn shape with butt end and tail tip, described imitative tail feathers shape type groove 3 lines are at the butt end of described imitative remex shape type groove 2, between described imitative bird wing-shaped type groove, have sealing weir 4, described end face unslotted endless belt part forms sealing dam 5, imitative bird wing-shaped type groove described in every two forms groove pair according to splayed shape, and some grooves are to being arranged in imitative bird wing-shaped type grooved ring band along even circumferential, and imitative bird wing-shaped type grooved ring band is opened the high pressure side at described end face, 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 butterfly-like type groove, looping time sealing dam between described imitative bird wing-shaped type grooved ring band.
Further, two imitative bird wing-shaped type grooves of described groove centering can separate, and can be also seamless links.
Further, described imitative bird wing-shaped type grooved ring band number is no less than two, radially forms two-stage or when multi-stage sealed, and the tail tip part of the most close on high-tension side imitative remex tail shape type groove is connected with high pressure side and is truncated and forms wide width wing suction port.
Further, described imitative tail feathers shape type groove to be shaped as tail feathers wing, its border molded line can be one of following: helix, circular arc line, straight line.
Further, described imitative remex shape type groove to be shaped as remex wing, its border molded line can be one of following: helix, circular arc line, straight line.
Further, the groove depth of described imitative bird wing-shaped type groove is 0.1～100 μ m, and along same radial direction, the high pressure side from end face is 1～10 to the distributed quantity of low voltage side to described imitative bird wing-shaped type groove.
Further, the groove depth preferred value of described imitative bird wing-shaped type groove is 3～18 μ m; Along same radial direction, the high pressure side from end face is 2～4 to the preferred amount of low voltage side to described imitative bird wing-shaped type groove.
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 groove form.
Content described in this specification embodiment be only way of realization to the utility model design for example; protection domain of the present utility model should not be regarded as only limiting 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 (8)
1. the imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould mechanical seal, comprise two seal rings of mechanical seal, be 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 grooves, the shallow slot that described imitative bird wing-shaped type groove is micro-meter scale, 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, between described imitative bird wing-shaped type groove, have sealing weir, described end face unslotted endless belt part forms sealing dam, imitative bird wing-shaped type groove described in every two forms groove pair according to splayed shape, and some grooves are to being arranged in imitative bird wing-shaped type grooved ring band along even circumferential, and imitative bird wing-shaped type grooved ring band is opened the high pressure side at described end face, the degree of depth of described imitative remex shape type groove shoals gradually along airflow direction.
2. the imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould according to claim 1 mechanical seal, it is characterized in that: described imitative bird wing-shaped type groove is arranged symmetrically with according to a certain circumference on end face, form a pair of butterfly-like type groove, looping time sealing dam between described imitative bird wing-shaped type grooved ring band.
3. the imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould according to claim 2 mechanical seal, is characterized in that: two imitative bird wing-shaped type grooves of described groove centering can separate, and can be also seamless links.
4. the imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould according to claim 3 mechanical seal, it is characterized in that: described imitative bird wing-shaped type grooved ring band number is no less than two, radially form two-stage or when multi-stage sealed, the tail tip part of the most close on high-tension side imitative remex tail shape type groove is connected with high pressure side and is truncated and forms wide width wing suction port.
5. the imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould according to claim 4 mechanical seal, it is characterized in that: described imitative tail feathers shape type groove to be shaped as tail feathers wing, its border molded line can be one of following: helix, circular arc line, straight line.
6. the imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould according to claim 5 mechanical seal, it is characterized in that: described imitative remex shape type groove to be shaped as remex wing, its border molded line can be one of following: helix, circular arc line, straight line.
7. the imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould according to claim 6 mechanical seal, it is characterized in that: the groove depth of described imitative bird wing-shaped type groove is 0.1～100 μ m, along same radial direction, the high pressure side from end face is 1～10 to the distributed quantity of low voltage side to described imitative bird wing-shaped type groove.
8. the imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould according to claim 7 mechanical seal, is characterized in that: the groove depth preferred value of described imitative bird wing-shaped type groove is 3～18 μ m; Along same radial direction, the high pressure side from end face is 2～4 to the preferred amount of low voltage side to described imitative bird wing-shaped type groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439332.5U CN204025686U (en) | 2014-08-06 | 2014-08-06 | The imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould mechanical seal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420439332.5U CN204025686U (en) | 2014-08-06 | 2014-08-06 | The imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould mechanical seal |
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| Publication Number | Publication Date |
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| CN204025686U true CN204025686U (en) | 2014-12-17 |
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| CN201420439332.5U Withdrawn - After Issue CN204025686U (en) | 2014-08-06 | 2014-08-06 | The imitative bird wing-shaped type groove structure of bidirectional rotation gas sound die mould mechanical seal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265900A (en) * | 2014-08-06 | 2015-01-07 | 浙江工业大学 | Two-way rotating gas dynamic/static pressure mechanical seal type bird wing-shaped groove structure |
-
2014
- 2014-08-06 CN CN201420439332.5U patent/CN204025686U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265900A (en) * | 2014-08-06 | 2015-01-07 | 浙江工业大学 | Two-way rotating gas dynamic/static pressure mechanical seal type bird wing-shaped groove structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141217 Effective date of abandoning: 20160518 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20141217 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |