CN101672366A - Tilting directional microporous end surface mechanical sealing structure - Google Patents
Tilting directional microporous end surface mechanical sealing structure Download PDFInfo
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- CN101672366A CN101672366A CN200910153313A CN200910153313A CN101672366A CN 101672366 A CN101672366 A CN 101672366A CN 200910153313 A CN200910153313 A CN 200910153313A CN 200910153313 A CN200910153313 A CN 200910153313A CN 101672366 A CN101672366 A CN 101672366A
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Abstract
The invention relates to a tilting directional microporous end surface mechanical sealing structure comprising a dynamic ring and a static ring which are sealed mechanically, one side of the end surface of the dynamic ring and the static ring is a high-voltage side, namely, an upstream part, and the other side thereof is a low-voltage side, namely, a downstream part; the end surface of the dynamicring or the static ring is provided with a microporous ring belt which is arranged on the upstream part of the end surface; the downstream part of the microporous ring belt is provided with a continuous ring-shaped sealing dam; and a long shaft of the micropore forms a tilting angle with the diameter of the sealing end surface passing through the center of the micropore. The tilting directional micropore end surface mechanical sealing structure has the beneficial effects of: greatly improving hydrodynamic effect of the microporous end surface, leading the sealing to have good starting-stopping effect under low-voltage condition, being capable of being applied in a liquid medium and a gas medium by setting the depth of the micropore, being capable of fully exerting the capabilities and advantages of microporous solid particles, realizing no contact, wear resistance and no leakage of sealing, prolonging the service life and improving the sealing reliability.
Description
Technical field
Patent of the present invention relates to the end surface mechanical sealing structure design field, specifically is meant tilting directional microporous end surface mechanical sealing structure, is applicable to the shaft end seal device of rotating machinery rotating shafts such as various compressors, pump and still stirrer.
Background technique
Mechanical seal is the main means that prevent that the rotary type fluid machine axle head from revealing, and along with the fast development of industries such as petrochemical industry, requires mechanical seal to develop to high parameter, has higher stability and reliability and longer working life.Since the nineties in 20th century, it with Crane John Inc. the released one after another sealing of end patterns such as one-way spiral groove, unidirectional herringbone spiral chute, unidirectional Y shape spiral chute, unidirectional L shaped spiral chute, unidirectional arc groove, two-way T-slot, two-way U-groove bevel, two-way tree-like groove of the domestic and international sealing company of representative, realized the non-contacting mechanical seal form, be widely used on the shaft end seal device of centrifugal compressor and the rotating shaft of pump class.But, above-mentioned mechanical seal generally all has startup or stopping performance is relatively poor or sealability is subjected to disturbance to be easy to occur unsettled phenomenon, and anti-solid particle is limited in one's ability, and the crystallization that can not be adapted to well easily vaporize, solid content is higher or occasion such as high operating parameter.For this reason, people turn to development in recent years surface texture technology rapidly with sight, utilize the wear resistance and the working life of the anti-friction wear-resistant effect raising seal face of surface micro-structure.Etsion I. has invented a kind of many (little) hole end surface sealing applications at first in pump class I liquid I gland seal device.Have multinomial this type of patent at present both at home and abroad, but because the hydrodynamic effect of designed micropore is limited in the present patent, make the bearing capacity or the end face of mechanical seal fluid film keep non-contacting limited in one's ability, the contact wear of end face takes place easily, offset the anti-attrition advantage of micropore to a great extent, caused start-stop weak effect, end wear, working life to lack.
Summary of the invention
Limited in order to overcome the anti-solid particle ability, the hydrodynamic effect that seal in the prior art, make start and stop weak effect under the low pressure condition, working life is short, when especially being applied to contain medium, the gas medium of solid particle, the deficiency of sealing reliability difference, the invention provides a kind of medium that can be applied to various conditions, strengthened micropore hydrodynamic effect, give full play to the anti-attrition advantage of microporous end surface, make that the sealing start and stop are effective, but frequent starting, reliability height, the tilting directional microporous end surface mechanical sealing structure of long service life.
Technological scheme of the present invention:
Tilting directional microporous end surface mechanical sealing structure, the rotating ring, the stationary ring that comprise mechanical seal, one side of the end face of described rotating ring and stationary ring is that the high pressure side is the upstream, the opposite side of the end face of described rotating ring and stationary ring is that low voltage side is the downstream, have the micropore endless belt on described rotating ring or the stationary ring end face, described micropore endless belt is located at the end face upstream, the downstream of described micropore endless belt is provided with a continuous ring packing dam, it is characterized in that: the major axis of described micropore has the angle of inclination with seal face diameter by the micropore center.
Further, described micropore is symmetrically distributed according to rotating center.
Further, described seal face radially is evenly equipped with a plurality of micropores.
Further, the span of the major axis of described micropore and minor axis ratio is: 1～50; Described micropore minor axis length scope is: 10～1000 μ m; The described micropore degree of depth is 1～50 μ m; The area density scope of described micropore is: 0.05～0.5; The radial width scope on described sealing dam is: 0.1～10mm.
The shape of the micropore among the present invention can be regular figures such as ellipse, rectangular, rhombus, half elliptic, triangle, but must have tangible directivity.
Working principle of the present invention:
Described micropore directivity tilts to make the pressure flow that is produced by the upstream high pressure after entering micropore, under tangential rotating speed cutting effect, part fluid will flow along the micropore long axis direction, and because the micropore long axis direction is greater than short-axis direction, the directivity that is micropore has increased the flow process of fluid in the micropore district, make fluid flow constantly accumulate along long axis direction, and be subjected to continuous compression, pressure improves gradually, form tangible dynamic pressure effect, the opening force of each single hole is improved, and forms miniature dynamic pressure groove, thereby has improved the dynamic pressure opening force of whole seal face.When low voltage starting, can separate the seal face friction pair fast, reduce the contact friction of seal face, obviously improve the start-stop effect.
The micropore endless belt is located at the end face upstream, can well stop solid particle to enter seal face, after micro-particle enters end face, micropore can play the effect of receiving, effectively bring into play the ability of the anti-solid particle of micropore, the anti-attrition abrasive resistance improves, and makes sealing can be applied to contain the higher occasion of concentration of solid particles.Simultaneously, distinctive tilting directional microporous structure, improve hydrodynamic effect between end face greatly, provide the maintenance end face non-contacting maximum capacity, increased the axial rigidity of sealing, thereby made the antijamming capability of sealing or startup or stopping performance stable and under the low pressure condition be better than the mechanical seal of general spiral chute hydrodynamic.
Beneficial effect of the present invention mainly shows: 1, unique tilting directional microporous structure on the seal face, improved the hydrodynamic effect of microporous end surface greatly, and make that start and stop are effective under the sealing low pressure condition; 2, liquid medium and gas medium can be applied to by the hole depth that micropore is set, the ability and the advantage of the anti-solid particle of micropore can be given full play to; 3, the hydrodynamic effect of Zeng Qianging has realized the non-contact that seals, wear-resistant, has prolonged working life, has improved the reliability of sealing.
Description of drawings
Fig. 1 is an end-face structure schematic representation of the present invention.
Fig. 2 is a microcellular structure enlarged view of the present invention.
Fig. 3 is that structural representation is implemented in sealing of the present invention.
Embodiment
With reference to Fig. 1-3, tilting directional microporous end surface mechanical sealing structure, the rotating ring 3, the stationary ring 4 that comprise mechanical seal, one side of the end face of described rotating ring 3 and stationary ring 4 is that the high pressure side is the upstream, the opposite side of the end face of described rotating ring 3 and stationary ring 4 is that low voltage side is the downstream, have the micropore endless belt on described rotating ring 3 or stationary ring 4 end faces, described micropore endless belt is located at the end face upstream, the downstream of described micropore endless belt is provided with a continuous ring packing dam 2, and the major axis 12 of described micropore 1 has the angle of inclination with the seal face diameter 13 by micropore 1 center.
Described micropore 1 is symmetrically distributed according to rotating center.
Described seal face radially is evenly equipped with a plurality of micropores.
The span of the major axis 12 of described micropore 1 and minor axis 11 ratios is: 1～50; Described micropore 1 minor axis 11 length ranges are: 10～1000 μ m; Described micropore 1 degree of depth is 1～50 μ m; The area density scope of described micropore 1 is: 0.05～0.5; The radial width scope on described sealing dam 2 is: 0.1～10mm.
The shape of described micropore 1 can be regular figures such as ellipse, rectangular, rhombus, half elliptic, triangle, but must have tangible directivity.
The described content of this specification embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (4)
1, tilting directional microporous end surface mechanical sealing structure, the rotating ring, the stationary ring that comprise mechanical seal, one side of the end face of described rotating ring and stationary ring is that the high pressure side is the upstream, the opposite side of the end face of described rotating ring and stationary ring is that low voltage side is the downstream, have the micropore endless belt on described rotating ring or the stationary ring end face, described micropore endless belt is located at the end face upstream, the downstream of described micropore endless belt is provided with a continuous ring packing dam, it is characterized in that: the major axis of described micropore has the angle of inclination with seal face diameter by the micropore center.
2, tilting directional microporous end surface mechanical sealing structure according to claim 1 is characterized in that: described micropore is symmetrically distributed according to rotating center.
3, tilting directional microporous end surface mechanical sealing structure according to claim 1 and 2 is characterized in that: described seal face radially is evenly equipped with a plurality of micropores.
4, tilting directional microporous end surface mechanical sealing structure according to claim 3 is characterized in that: the span of the major axis of described micropore and minor axis ratio is: 1～50; Described micropore minor axis length scope is: 10～1000 μ m; The described micropore degree of depth is 1～50 μ m; The area density scope of described micropore is: 0.05～0.5; The radial width scope on described sealing dam is: 0.1～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153313XA CN101672366B (en) | 2009-10-15 | 2009-10-15 | Tilting directional microporous end surface mechanical sealing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910153313XA CN101672366B (en) | 2009-10-15 | 2009-10-15 | Tilting directional microporous end surface mechanical sealing structure |
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| CN101672366A true CN101672366A (en) | 2010-03-17 |
| CN101672366B CN101672366B (en) | 2012-03-21 |
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| CN200910153313XA Active CN101672366B (en) | 2009-10-15 | 2009-10-15 | Tilting directional microporous end surface mechanical sealing structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470762A (en) * | 2013-08-20 | 2013-12-25 | 浙江工业大学 | Inclined gradually varied porous end surface non-contact type mechanical sealing structure |
| CN103470770A (en) * | 2013-09-06 | 2013-12-25 | 浙江工业大学 | Micro-hole end face mechanical seal structure with air inlet grooves |
| CN103470771A (en) * | 2013-09-06 | 2013-12-25 | 浙江工业大学 | End face mechanical seal structure with air inlet grooves and micropores |
| CN104154235A (en) * | 2014-05-07 | 2014-11-19 | 清华大学 | Spiral distribution convergent micropore texture mechanical seal |
| CN105299233A (en) * | 2015-11-20 | 2016-02-03 | 湖南天雁机械有限责任公司 | Turbocharger sealing ring subjected to laser surface texturing and machining method |
| CN114215897A (en) * | 2021-11-10 | 2022-03-22 | 浙江环誉泵业科技有限公司 | Wear-resistant lubricating gear end face communicated with backflow groove texture |
| CN114215742A (en) * | 2021-11-10 | 2022-03-22 | 浙江环誉泵业科技有限公司 | Low-leakage dynamic pressure fluid sealing end face structure with self-circulation backflow function |
-
2009
- 2009-10-15 CN CN200910153313XA patent/CN101672366B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470762A (en) * | 2013-08-20 | 2013-12-25 | 浙江工业大学 | Inclined gradually varied porous end surface non-contact type mechanical sealing structure |
| CN103470770A (en) * | 2013-09-06 | 2013-12-25 | 浙江工业大学 | Micro-hole end face mechanical seal structure with air inlet grooves |
| CN103470771A (en) * | 2013-09-06 | 2013-12-25 | 浙江工业大学 | End face mechanical seal structure with air inlet grooves and micropores |
| CN104154235A (en) * | 2014-05-07 | 2014-11-19 | 清华大学 | Spiral distribution convergent micropore texture mechanical seal |
| CN105299233A (en) * | 2015-11-20 | 2016-02-03 | 湖南天雁机械有限责任公司 | Turbocharger sealing ring subjected to laser surface texturing and machining method |
| CN114215897A (en) * | 2021-11-10 | 2022-03-22 | 浙江环誉泵业科技有限公司 | Wear-resistant lubricating gear end face communicated with backflow groove texture |
| CN114215742A (en) * | 2021-11-10 | 2022-03-22 | 浙江环誉泵业科技有限公司 | Low-leakage dynamic pressure fluid sealing end face structure with self-circulation backflow function |
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| Publication number | Publication date |
|---|---|
| CN101672366B (en) | 2012-03-21 |
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Application publication date: 20100317 Assignee: Wufeng Ruiyuan Labor Service Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980035830 Denomination of invention: Tilting directional microporous end face mechanical seal structure Granted publication date: 20120321 License type: Common License Record date: 20230520 |
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Application publication date: 20100317 Assignee: ZHEJIANG KENENG VALVE Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980037350 Denomination of invention: Tilting directional microporous end face mechanical seal structure Granted publication date: 20120321 License type: Common License Record date: 20230703 Application publication date: 20100317 Assignee: Songyang Yongxin Machinery Manufacturing Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980037292 Denomination of invention: Tilting directional microporous end face mechanical seal structure Granted publication date: 20120321 License type: Common License Record date: 20230703 Application publication date: 20100317 Assignee: Zhejiang Shimao Valve Industry Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980037358 Denomination of invention: Tilting directional microporous end face mechanical seal structure Granted publication date: 20120321 License type: Common License Record date: 20230704 Application publication date: 20100317 Assignee: Zhejiang Zhongxin Valve Casting Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980037355 Denomination of invention: Tilting directional microporous end face mechanical seal structure Granted publication date: 20120321 License type: Common License Record date: 20230704 Application publication date: 20100317 Assignee: Kaizheng Valve Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980037352 Denomination of invention: Tilting directional microporous end face mechanical seal structure Granted publication date: 20120321 License type: Common License Record date: 20230704 |
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