CN1818434A - Wear-resistant mechanical sealing structure on end face - Google Patents
Wear-resistant mechanical sealing structure on end face Download PDFInfo
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- CN1818434A CN1818434A CN 200610049841 CN200610049841A CN1818434A CN 1818434 A CN1818434 A CN 1818434A CN 200610049841 CN200610049841 CN 200610049841 CN 200610049841 A CN200610049841 A CN 200610049841A CN 1818434 A CN1818434 A CN 1818434A
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- face
- wear
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- dam
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- 238000007789 sealing Methods 0.000 title claims abstract description 111
- 238000012856 packing Methods 0.000 claims description 21
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 11
- 238000005461 lubrication Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000012545 processing Methods 0.000 description 8
- 230000001050 lubricating effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
A wear-proof mechanical end face sealing structure comprises mechanical sealing movable and fixed rings, on the end faces of which are machined microlugs arranged a girdle according to the centre of the end face. Beside the girdle is disposed a ring sealing dam with a smooth surface symmetrically about the centre of the end face and there is at least one ring sealing dam on the end face. The parametric range of the microlug structure is that, the aspect ratio or the breadth depth ratio is 0.5~30, the height is 2~500 mu m, the area density is 0.1~0.7 and the distance between the section axile wires of the adjacent microlugs is 0.05~1.0 mm.
Description
(1) technical field
The present invention relates to a kind of rotating shaft sealing of rotary type fluid machine, be specially adapted to various compressors, pump and still shaft end seal device, belong to the mechanical end face seal technical field with rotating machinery rotating shafts such as stirrers.
(2) background technique
In industries such as oil, petrochemical industry and chemical industry and electric power, Aero-Space, mechanical end face seal is used widely.With regard to traditional contact-type mechanical seal, because the frictional heat that produces between the slide relative end face can be enough to cause face deformation, increase power consumption, quicken the aging of seal element, and cause the fault that other are difficult to expect, therefore replaced by advanced sealing technique just gradually in this class sealing of many crucial occasions, wherein dry gas face seals (is called for short DGS, sees Lubrication Engineering, 1990,46 (9): pp607) and upstream pumping mechanical seal (be called for short UP-Stream MS, see Lubrication Engineering, 1990,46 (4): pp213, USA Patent 4,290,611) be typical case's representative of advanced sealing technique.
When the mechanical seal end surface proper functioning, it is one of following three kinds that the lubricating status between its seal face often shows as: hydrodynamic lubrication, elastohydrodynamic lubrication and boundary lubrication.When above-mentioned novel mechanical sealing reaches similar inventions (as USA Patent 5454572 and the Chinese patent 96108614.9 etc.) proper functioning that derives from thus, generally be in one of preceding two kinds of lubricating status, therefore frictional heat and wear extent have been reduced, but manufacture cost is higher, is difficult to obtain large size and promotes the use of; Mi Feng startup or stopping performance are relatively poor or/and antijamming capability is lower simultaneously, and lower, the anti-solid particle of sealability is limited in one's ability, the crystallization that can not be adapted to well easily vaporize, the more high medium occasion of solid content.
Above-mentioned sealing technique all can reduce the imbody of meso-and mega-relief or macro-asperity (macroasperities) processing technique in mechanical seal, the geometric properties of meso-and mega-relief is its ratio of height to diameter or aspect ratio (height to diameter ratios or aspect ratios) value very low (＜0.0001), and number seldom.In contrast, the aspect ratio much bigger (＞0.001) of nao-and micro relief (micro asperities), therefore be also referred to as high aspect ratio microstructure (highaspect ratios microstructures, be abbreviated as HARMs), its little prominent body number is very big, although by changing the accurate control and the adjustment of the easier realization greasy property of end face surface nao-and micro relief, processing cost is but far above meso-and mega-relief to a certain extent.But, LIGA technology (the combination of deep layer photoetching, plating, three kinds of technology of die casting that occurs recently, see ASMETrans J.of Tribology, 2004,126 (1): pp147, USA Patent 6149160 and USAPatent 6280090---American Stephens and Kelly invention) above-mentioned nao-and micro relief end face seal is become a reality.Said according to Stephens and Kelly, use hold mill surface on the processing even distribution HARMs of LIGA technology at bearing and mechanical end face seal, not only manufacture cost is lower than the meso-and mega-relief end face seal, and reduced the end-face friction heat, the functional reliability and the stability of sealing have been increased, prolong working life, improved the working speed and the dry running ability of sealing.The HARMs end face seal can be in any in above-mentioned three kinds of lubricating status.
The whole employing of end face LIGA technology processing micro structure mechanical seal (HARMs-MS), this hydrostatic pressure effect that can cause because of end face pressure reduction under some occasion that is sealed in causes static leakage, although this leakage can reduce by dwindling between little prominent body spacing or widening end face, but meanwhile can increase frictional heat, increase manufacture cost, and the too small meeting of little prominent body spacing causes processing difficulties, be difficult to produce effective heat-transfer effect during work, also be unfavorable for the infiltration of lubricating fluid, these all produce contradiction with the invention original intention.In addition, test shows that the end face seal of HARMs-MS is easy to generate howling (ringing) when working, and when starting, may produce " cold welding " phenomenon (cold welding), this is very disadvantageous to seal face brittle materials such as pottery commonly used; And when this sealing was used in the medium occasion that contains a certain amount of solid abrasive, its wear resistance was relatively poor.
(3) summary of the invention
In order to overcome end face processing difficulties in the prior art, cost height, during work frictional heat big, be easy to generate howling, can produce the deficiency of cold welding phenomenon when starting, the invention provides a kind of easy to process, cost is relatively low, frictional heat is little during work, wear resistance good, withstand voltage temperature capacity is strong, have excellent startup/stopping performance, working stability is reliable, but frequent starting can be applicable to a kind of wear-resistant mechanical sealing structure on end face of high parameter (high temperature, high pressure and high rotating speed).
Technological scheme of the present invention is:
A kind of wear-resistant mechanical sealing structure on end face, the rotating ring that comprises mechanical seal, stationary ring, be processed with little prominent body on the end face of rotating ring or stationary ring, described little prominent body is arranged in endless belt, endless belt is other to be provided with according to the centrosymmetric ring packing of end face dam, the end face on described sealing dam is a smooth surface, the height on sealing dam is slightly larger than or equals the height of little prominent body, has a ring packing dam on the end face at least, the height on sealing dam just can play seal action during only more than or equal to the height of little prominent body, the height of little prominent body differed far as if the height with the sealing dam can not play good effect, so require the height on sealing dam should be slightly larger than or equal the height of little prominent body.
Described little prominent body is preferably according to the end face center and is arranged in endless belt.
The structural parameter scope of described little prominent body is: aspect ratio or depth-to-width ratio α (α=h
Ms/ D, h
MsBe little prominent height degree, D is the average diameter or the width of little prominent body) be: 0.5～30, preferred 1～10; Highly be 2～500 μ m, preferred 2～200 μ m; Area density (ratio of maximum cross-section area that little prominent body is total and ring belt area of living in area) is 0.1～0.7; Distance is 0.05～1.0mm between the medial axis, cross section of adjacent little prominent body.
Also be processed with on the described end face according to the centrosymmetric microflute of end face, the sealing weir of described microflute is contour with the sealing dam.
Described microflute is positioned at sealing downstream, dam, and little prominent body is positioned at sealing upstream, dam.
Described microflute is positioned at sealing upstream, dam, and little prominent body is positioned at sealing downstream, dam.
Little prominent body is identical or leaks direction along sealing medium and slowly increase in gradient along the height of end face radial direction; Little prominent body on the end face is even or random distribution.
There is two or more sealing dam to be separated on the end face by little prominent body or microflute endless belt.
The sectional shape of little prominent body is square, rectangle, rhombus, triangle, regular polygon or circle.
The radial width scope on described ring packing dam is: 0.1～10mm.
Spiral fluted structural parameter scope is: groove depth 2～500 μ m, preferred 2～200 μ m; 0～90 ° of spiral angle, preferred 10～30 °; Several 2～100 of groove, preferred 6～40.
Working principle of the present invention: increased the sealing dam on the end face, there is the effect of parking sealer on the sealing dam, and can prevent that the particulate matter pulverized through little prominent body etc. from entering the downstream.
Little prominent body on the end face is by adopting the processing of LIGA technology to obtain after the optimal design, they produce pulverization to the solid particle that enters seal face, can effectively limited lubricating fluid evenly be imported seal face, and during machine is stopped transport, maintain lubricating fluid well, produce dry friction even cold welding when avoiding starting.The little prominent body of proportional spacing also plays heat transfer and the lubrication effect of strengthening end face, reduces the end-face friction temperature thus, reduce or even avoid the vaporization or the crystallization of seal fluid, reduce wearing and tearing, improve the seal operation reliability, increase the service life, make sealing can be adapted to higher operating parameter.
Reduce direction or sealing medium leakage direction along end force, the little prominent height degree of evenly an amount of increase, and can reduce the area density of little prominent body on the unit radial width simultaneously, therefore the sealing that obtains has the high axial rigidity of similar best conical surface end face seal, thereby makes the antijamming capability of sealing or stability be better than the mechanical seal of existing general spiral chute hydrodynamic.
Sealing medium is under microstructure and spiral fluted synergy, produce stronger hydrodynamic effect and pump and draw effect, thereby keep the non-contact between the end face when making sealing work, can realize not having fretting wear and zero leakage (Zero-leakage) fully, prolong the working life of sealing, improved the reliability of sealing.
Visual actual demand of mechanical seal of the present invention and medium character select whether to dispose the buffer fluid back-up system.When sealing self is combined as Double End or multistage (containing two-stage) mechanical seal, or when comprising that with other sealings labyrinth spiral sealing, floating-ring seal, oil sealing, mechanical seal or other non-contact mechanical seals are combined into hybrid mechanical seal, should correspondingly dispose the medium that the buffer fluid back-up system is used to seal inflammable, explosive, poisonous or befouling environment, can reach zero actual effusion (Zero-fugitive), seal more safe and reliable.Buffer fluid can be clean liquid or gas, also can be steam.
Keep the structure of sealing constant substantially, only change little prominent body and spiral fluted structural parameter and it is intercoupled by optimal design, then sealing both can be used for rotary pump and the still shaft end seal device with stirrer, also can be used for the shaft end seal device of rotary compressor.
According to above-mentioned working principle, sealing of the present invention both can be a Hydrodynamic pressure type, also can be fluid sound die mould; Lubricating status both can be a hydrldynamic pressure lubrication between seal face, also can be elastohydrodynamic lubrication, also can be boundary lubrication; Both can be that gas (vapour) body is lubricated, also can be liquid lubrication.Sealing can be used for the shaft end seal of various rotating machineries.
The present invention can be applied at least one seal face, also can be applied to two end faces of dynamic and static ring simultaneously; Adopting mechanical seal total arrangement of the present invention can be single mechanical end face seal, double mechanical seal or two-stage, three grades and multi-stage mechanical sealing, and when adopting two covers or the above the present invention of two covers to seal, the parameter of structure design of every cover sealing can be identical, also can be different; Adopting mechanical seal device of the present invention can be bulk type mechanical seal, also can be integrated mechanical sealing.The present invention can be applied to the manufacturing of metallic material, stupalith and other nonmetallic material parts.The present invention can be applied to balanced mechanical seal, also can be applied to unbalanced type mechanical seal.When some equipment were the rotation of the static and chamber of axle, the present invention can be suitable for equally.
The beneficial effect of wear-resistant mechanical sealing structure on end face of the present invention mainly shows:
1, increased the sealing dam on the end face, there is the effect of parking sealer on the sealing dam, and can prevent that the particulate matter pulverized through little prominent body etc. from entering the downstream; 2, by optimal design and adopt the little prominent body of LIGA technology processing, it is at interval rationally easy to process, precision is high, cost performance is high, frictional heat is little during work, wear resistance good, withstand voltage temperature capacity is strong, have excellent startup/stopping performance, working stability is reliable, but frequent starting; 3, microflute can produce pump to leak fluid and draw effect; 4, increase the height of little prominent body along fluid-encapsulated leakage direction, when making the even limited infiltration seal face of fluid, control leakage rate and solid particle flow improve the axial rigidity of fluid-encapsulated film.
(4) description of drawings
Fig. 1 is wear-resistant mechanical seal face embodiment's one an of the present invention structural representation.
Fig. 2 is wear-resistant mechanical seal face embodiment's two an of the present invention structural representation.
Fig. 3 is wear-resistant mechanical seal face embodiment's three an of the present invention structural representation.
Fig. 4 is wear-resistant mechanical seal face embodiment's four an of the present invention structural representation.
Fig. 5 is wear-resistant mechanical seal face embodiment's five an of the present invention structural representation.
Fig. 6 is wear-resistant mechanical seal face embodiment's six an of the present invention structural representation.
Fig. 7 is wear-resistant mechanical seal face embodiment's seven an of the present invention side view.
Fig. 8 is wear-resistant mechanical seal face embodiment's two an of the present invention side view.
(5) embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment one
A kind of wear-resistant mechanical sealing structure on end face, the rotating ring 5, the stationary ring 6 that comprise mechanical seal, be processed with little prominent body 1 on the end face of rotating ring or stationary ring, described little prominent body 1 is arranged in endless belt according to the end face center, endless belt is other to be provided with according to the centrosymmetric ring packing of end face dam 2, the end face on described sealing dam is a smooth surface, and a ring packing dam is arranged on the end face.
Little prominent body leaks direction along sealing medium slowly to be increased in gradient, and its maximum height is no more than the height on adjacent sealing dam, and little prominent bulk density is leaked direction along sealing medium and reduced slightly.
The structural parameter scope of little prominent body is: aspect ratio or depth-to-width ratio α are 1～10; Highly be 2～200 μ m; Area density is 0.1～0.7; Distance is 0.05～1.0mm between the medial axis, cross section of adjacent little prominent body.
The sectional shape of little prominent body is a square.
The radial width scope on described ring packing dam is: 0.1～10mm.
Embodiment two
A kind of wear-resistant mechanical sealing structure on end face, the rotating ring 5 that comprises mechanical seal, stationary ring 6, the end face upstream of rotating ring or stationary ring is processed with little prominent body 1, described little prominent body is arranged in endless belt according to the end face center, endless belt is other to be provided with according to the centrosymmetric ring packing of end face dam 2, the end face on described sealing dam is a smooth surface, the height on sealing dam 2 equals the height of little prominent body 1, described end face downstream also is processed with according to the centrosymmetric microflute 3 of end face, the sealing weir 4 of described microflute is contour with sealing dam 2, a ring packing dam is arranged on the end face, and sealing dam 2 is between little prominent body 1 and microflute 3.
Little prominent body is identical along the height of end face radial direction.
Described microflute is a spiral chute, and spiral fluted structural parameter scope is: groove depth 2～200 μ m, 10～30 ° of spiral angles, several 6～40 of groove.
All the other structures of present embodiment are identical with embodiment one with implementation.
Embodiment three
A kind of wear-resistant mechanical sealing structure on end face, the rotating ring 5, the stationary ring 6 that comprise mechanical seal, the end face downstream of rotating ring or stationary ring is processed with little prominent body 1, described little prominent body 1 is arranged in endless belt according to the end face center, endless belt is other to be provided with according to the centrosymmetric ring packing of end face dam 2, the end face on described sealing dam is a smooth surface, described end face upstream also is processed with according to the centrosymmetric microflute 3 of end face, the sealing weir 4 of described microflute is contour with sealing dam 2, a ring packing dam 2 is arranged on the end face, and sealing dam 2 is between little prominent body 1 and microflute 3.
Little prominent body 1 leaks direction along sealing medium slowly to be increased in gradient, and its maximum height is no more than the height on adjacent sealing dam 2, and little prominent body 1 density is constant.
Described microflute is a spiral chute, and spiral fluted structural parameter scope is: groove depth 2～200 μ m, 10～30 ° of spiral angles, several 6～40 of groove.
All the other structures of present embodiment are identical with embodiment one with implementation.
Embodiment four
A kind of wear-resistant mechanical sealing structure on end face, the rotating ring 5, the stationary ring 6 that comprise mechanical seal, be processed with little prominent body 1 on the end face of rotating ring or stationary ring, described little prominent body is arranged in endless belt according to the end face center, endless belt is other to be provided with according to the centrosymmetric ring packing of end face dam 2, the end face on described sealing dam is a smooth surface, and two ring packing dams are arranged on the end face.
The first sealing dam is identical with the width on the second sealing dam.
All the other structures of present embodiment are identical with embodiment one with implementation.
Embodiment five
A kind of wear-resistant mechanical sealing structure on end face, the rotating ring 5, the stationary ring 6 that comprise mechanical seal, the end face upstream of rotating ring or stationary ring is processed with little prominent body 1, described little prominent body is arranged in endless belt according to the end face center, endless belt is other to be provided with according to the centrosymmetric ring packing of end face dam 2, the end face on described sealing dam is a smooth surface, described end face downstream also is processed with according to the centrosymmetric microflute 3 of end face, the sealing weir 4 of described microflute is contour with the sealing dam, two ring packing dams are arranged on the end face, and sealing dam 2 is between little prominent body 1 and microflute 3.
The first sealing dam is different with the width on the second sealing dam.
All the other structures of present embodiment are identical with embodiment two with implementation.
Embodiment six
A kind of wear-resistant mechanical sealing structure on end face, the rotating ring 5, the stationary ring 6 that comprise mechanical seal, the end face downstream of rotating ring or stationary ring is processed with little prominent body 1, described little prominent body is arranged in endless belt according to the end face center, endless belt is other to be provided with according to the centrosymmetric ring packing of end face dam 2, the end face on described sealing dam is a smooth surface, described end face upstream also is processed with according to the centrosymmetric microflute 3 of end face, the sealing weir 4 of described microflute is contour with the sealing dam, two ring packing dams are arranged on the end face, and sealing dam 1 is between little prominent body 1 and microflute 3.
The first sealing dam is identical with the width on the second sealing dam.
All the other structures of present embodiment are identical with embodiment three with implementation.
Embodiment seven
A kind of wear-resistant mechanical sealing structure on end face, the rotating ring 5, the stationary ring 6 that comprise mechanical seal, the end face upstream of rotating ring or stationary ring is processed with little prominent body 1, described little prominent body is arranged in endless belt according to the end face center, endless belt is other to be provided with according to end face center symmetry, ganoid ring packing dam 2, described end face downstream also is processed with according to the centrosymmetric microflute 3 of end face, the sealing weir 4 of described microflute is contour with sealing dam 2, a ring packing dam is arranged on the end face, and sealing dam 2 is between little prominent body 1 and microflute 3.
Little prominent body 1 leaks direction along sealing medium slowly to be increased in gradient, and its maximum height is no more than the height on adjacent sealing dam 2, and little prominent body 1 density is constant.
All the other structures of present embodiment are identical with embodiment two with implementation.
Claims (10)
1, a kind of wear-resistant mechanical sealing structure on end face, the rotating ring, the stationary ring that comprise mechanical seal, it is characterized in that: be processed with little prominent body on the end face of rotating ring or stationary ring, described little prominent body is arranged in endless belt, endless belt is other to be provided with according to end face center symmetry, ganoid ring packing dam, has a ring packing dam on the end face at least; The structural parameter scope of described little prominent body is: aspect ratio or depth-to-width ratio α are: 0.5～30, and highly be 2～500 μ m, area density is 0.1～0.7, distance is 0.05～1.0mm between the medial axis, cross section of adjacent little prominent body.
2, wear-resistant mechanical sealing structure on end face as claimed in claim 1 is characterized in that: described little prominent body is arranged in endless belt according to the end face center.
3, wear-resistant mechanical sealing structure on end face as claimed in claim 2 is characterized in that: also be processed with on the described end face according to the centrosymmetric microflute of end face.
4, wear-resistant mechanical sealing structure on end face as claimed in claim 3 is characterized in that: described microflute is positioned at sealing downstream, dam, and little prominent body is positioned at sealing upstream, dam.
5, wear-resistant mechanical sealing structure on end face as claimed in claim 3 is characterized in that: described microflute is positioned at sealing upstream, dam, and little prominent body is positioned at sealing downstream, dam.
6, as the described wear-resistant mechanical sealing structure on end face of one of claim 1-4, it is characterized in that: little prominent body is identical or leaks direction along sealing medium and slowly increase in gradient along the height of end face radial direction; Little prominent body on the end face is even or random distribution.
7, wear-resistant mechanical sealing structure on end face as claimed in claim 6 is characterized in that: the sectional shape of little prominent body is square, rectangle, rhombus, triangle, regular polygon or circle.
8, wear-resistant mechanical sealing structure on end face as claimed in claim 7 is characterized in that: the radial width scope on described ring packing dam is: 0.1～10mm.
9, wear-resistant mechanical sealing structure on end face as claimed in claim 2 is characterized in that: the aspect ratio of described little prominent body or depth-to-width ratio α are 1～10, highly are 2～200 μ m.
10, as the described wear-resistant mechanical sealing structure on end face of one of claim 3-5, it is characterized in that: described microflute is a spiral chute, and spiral fluted structural parameter scope is: groove depth 2～200 μ m, 10～30 ° of spiral angles, several 6～40 of groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100498417A CN100370166C (en) | 2006-03-13 | 2006-03-13 | Wear-resistant mechanical sealing structure on end face |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100498417A CN100370166C (en) | 2006-03-13 | 2006-03-13 | Wear-resistant mechanical sealing structure on end face |
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| CN1818434A true CN1818434A (en) | 2006-08-16 |
| CN100370166C CN100370166C (en) | 2008-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100498417A Expired - Fee Related CN100370166C (en) | 2006-03-13 | 2006-03-13 | Wear-resistant mechanical sealing structure on end face |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518809A (en) * | 2011-12-29 | 2012-06-27 | 江苏大学 | Solid particle suction preventive type fluid dynamic pressure mechanical sealing ring |
| CN102785147A (en) * | 2012-07-20 | 2012-11-21 | 大连理工大学 | Four-axis coordinated grinding method for mechanical seal ring |
| CN106015580A (en) * | 2016-07-27 | 2016-10-12 | 浙江工业大学 | Dynamic and static pressure type columnar micro-bulge waviness distribution mechanical seal structure |
| CN107327576A (en) * | 2017-07-24 | 2017-11-07 | 浙江工业大学 | A kind of combined low leakage mechanical seal end face structure of annular groove cavitation texture |
| CN108571590A (en) * | 2017-03-13 | 2018-09-25 | 清华大学 | Mechanically-sealing apparatus |
| CN109058156A (en) * | 2018-08-17 | 2018-12-21 | 浙江工业大学 | One kind is like the combined mechanical seal end surface structure of comb dynamic and static pressure |
| CN114251456A (en) * | 2021-12-17 | 2022-03-29 | 浙江工业大学 | Fin-shaped groove mechanical seal end face structure for unidirectional rotation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58128569A (en) * | 1982-01-26 | 1983-08-01 | Akira Washida | Seal |
| US5071141A (en) * | 1990-07-17 | 1991-12-10 | John Crane Inc. | Spiral groove seal arrangement for high vapor-pressure liquids |
| US6149160A (en) * | 1997-08-08 | 2000-11-21 | Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College | Mechanical seals enhanced with microstructures |
| US6409180B1 (en) * | 2000-04-21 | 2002-06-25 | Perkinelmer, Inc. | Metallic seal |
| CN100427816C (en) * | 2002-09-20 | 2008-10-22 | 徐万福 | Helical flute and face mechanial seal composed of angular microflute group |
| CN2881233Y (en) * | 2006-03-13 | 2007-03-21 | 浙江工业大学 | Wear resistant mechanical end surface sealing structure |
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2006
- 2006-03-13 CN CNB2006100498417A patent/CN100370166C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518809A (en) * | 2011-12-29 | 2012-06-27 | 江苏大学 | Solid particle suction preventive type fluid dynamic pressure mechanical sealing ring |
| CN102518809B (en) * | 2011-12-29 | 2015-04-22 | 江苏大学 | Solid particle suction preventive type fluid dynamic pressure mechanical sealing ring |
| CN102785147A (en) * | 2012-07-20 | 2012-11-21 | 大连理工大学 | Four-axis coordinated grinding method for mechanical seal ring |
| CN102785147B (en) * | 2012-07-20 | 2014-11-12 | 大连理工大学 | Four-axis coordinated grinding method for mechanical seal ring |
| CN106015580A (en) * | 2016-07-27 | 2016-10-12 | 浙江工业大学 | Dynamic and static pressure type columnar micro-bulge waviness distribution mechanical seal structure |
| CN108571590A (en) * | 2017-03-13 | 2018-09-25 | 清华大学 | Mechanically-sealing apparatus |
| CN108571590B (en) * | 2017-03-13 | 2024-03-26 | 清华大学 | Mechanical sealing device |
| CN107327576A (en) * | 2017-07-24 | 2017-11-07 | 浙江工业大学 | A kind of combined low leakage mechanical seal end face structure of annular groove cavitation texture |
| CN109058156A (en) * | 2018-08-17 | 2018-12-21 | 浙江工业大学 | One kind is like the combined mechanical seal end surface structure of comb dynamic and static pressure |
| CN114251456A (en) * | 2021-12-17 | 2022-03-29 | 浙江工业大学 | Fin-shaped groove mechanical seal end face structure for unidirectional rotation |
| CN114251456B (en) * | 2021-12-17 | 2024-03-26 | 浙江工业大学 | Mechanical seal end face structure of fin-shaped groove for unidirectional rotation |
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Assignee: ZHEJIANG JINDUN FIRE-FIGHTING EQUIPMENT Co.,Ltd. Assignor: Zhejiang University of Technology Contract fulfillment period: 2008.12.1 to 2013.12.1 Contract record no.: 2009330000396 Denomination of invention: Wear-resistant mechanical sealing structure on end face Granted publication date: 20080220 License type: Exclusive license Record date: 20090227 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.1 TO 2013.12.1; CHANGE OF CONTRACT Name of requester: ZHEJIANG JINDUN FIRE-FIGHTING EQUIPMENT CO., LTD. Effective date: 20090227 |
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