CN103557334A - Multiple-end face combined type mechanical seal for realizing zero leakage and non-contact - Google Patents
Multiple-end face combined type mechanical seal for realizing zero leakage and non-contact Download PDFInfo
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- CN103557334A CN103557334A CN201310563469.1A CN201310563469A CN103557334A CN 103557334 A CN103557334 A CN 103557334A CN 201310563469 A CN201310563469 A CN 201310563469A CN 103557334 A CN103557334 A CN 103557334A
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Abstract
The invention provides a mechanical seal provided with multiple end faces arranged between a moving ring and a stationary ring for realizing zero leakage and non-contact through the combined actions of micro concave cavities, gap channels and pumping slots. Micro concave cavities or pumping slots are respectively formed in different end faces of the mechanical seal friction pair; the dynamic pressure effect of the micro concave cavities and the pumping slots is utilized to realize the non-contact; the pressure of leaked medium is reduced by utilizing the gap channels (or provided with mazes) among different end faces; the leakage amount is reduced or the zero leakage is achieved by utilizing the pumping effect of the pumping slot. The mechanical seal has the advantages that the zero leakage and non-contact are realized through the combination of surface micro molding structures of different end faces and the gap channels, the lubricating performance during the operating process is improved, besides, good sealing performance in the case of start-up and parking can be realized through the different seal gaps of different end faces, a certain effect is achieved on the aspects of mechanical seal thermal deformation reduction and particle abrasion prevention, and the mechanical seal is applicable to the field of high parameter mechanical seal of all liquid mediums.
Description
Technical field
The present invention relates to multiterminal face mechanical seal design field, specifically refer to a kind of consideration parking sealer, realize zero leakage, non-contacting novel many end surface mechanical sealing structures, object is to obtain desirable sealing effect and reduces to the full extent distortion and wearing and tearing.
Background technique
Development along with industrial technology, performance requirement to mechanical seal is more and more higher, at some high pressure, at a high speed, under the operating mode such as high temperature, particularly some Aero-Space, nuclear power station, field of petrochemical industry, require mechanical seal realize zero leakage, be out of shape little, the life-span is long.Sharply consuming and strict environmental objective of the energy, makes stability and the life-span of improving mechanical seal become the dark concerned problem with paying attention in mechanical seal manufacture field.
In order to realize zero leakage and the prolonged mechanical of mechanical seal, seal working life, current research is mainly to realize " non-contact " and " zero leakage " by the surface micro-moulding of seal face and combination seal, and has obtained certain effect.As: Israel professor Etsion.I proposes at mechanical seal end surface processing microcosmic cavity in Model for mechanical seals with regular microsurface structure.Tribology Transactions.39 (3): 677-683 (1996) one literary compositions, can produce dynamic pressure effect, improve lubricating status; Chinese patent 200710067282.7 proposes a kind of mechanical seal structure of offering variation cloth micropore at rotating ring or stationary ring, micropore differs in size, in the seal face distribution that is centrosymmetric, increase dynamic pressure effect, but the pumping capacity in nick chamber a little less than, cannot address the leakage concern, and can not solve start, the Properties of Dry Friction Problems while stopping; Chinese patent 101701585A, 2534428Y, 96216242.6 etc. have announced the upstream pumping mechanical seal ring of different structure, its pumping capacity and dynamic pressure effect, can reduce leakage rate, reduce the degree of wear, extend the working life of sealing pair, but the wearing and tearing when moment while starting shooting opens ability and stops are not still effectively solved; Chinese patent 200510038704.9 discloses a kind of end surface mechanical sealing of vallecular cavity coupling, on the rotating ring of mechanical seal or stationary ring, offer microcavity and pumping groove, the combination of these two kinds of moulding make the hydrodynamic effect of mechanical seal and pumping effect more remarkable, but it is still obvious not enough for the lubrication state in when start, to improve effect.
Chinese patent 200620040216.1 has been announced a kind of spiral combined machinery seal arrangement, is provided with spline, seal groove, outer wall is provided with spiral chute at sleeve lining, can reduce the working pressure of Seal cage medium, improves working effect, increases the service life; Chinese patent 201310015689.0 has been announced a kind of multiterminal face combined machine sealing, by one or multi-channel the first circular groove that is provided with a plurality of runner holes that are communicated with water injection hole at stationary ring and is communicated with runner hole, make dynamic and static ring surface of contact there is multiple tracks end face and a plurality of runner, form self-loopa, self cooled effect, guaranteed good lubricating status and cooling effect; U. S. Patent 2008/0290606A1 has announced a kind of combined machine sealing, fixes an outer cover on axle, is connected with rotating ring, prevents from revealing, and contacts end face be processed into taper shape at rotating ring with stationary ring, forms second sealing; Canadian Patent 2508354A has announced a kind of sealing mechanism that comprises that supporting ring, axially movable main ring form, and goes for the sealing of different pressures parameter.Yet above-mentioned sealing all can not effectively solve the heavy wear problem of end face while stopping, sealability also fails to reach desirable state.
Summary of the invention
Based on the problems referred to above, object of the present invention is exactly make up the deficiency in prior art and the lubricating status of a kind of effective consideration parking sealer of proposing, realize the non-contacting multiterminal face of zero leakage combined mechanical sealing.The use of sealing structure can be simplified the structure of sealing system greatly, the sealing effect of realizing ideal, and heat radiation is evenly, reduce thermal distortion, the improvement of seal face can effectively subtract less granular entering, thereby reduces end wear, strengthen the stability of sealing, extend the working life of sealing pair.
For achieving the above object, the present invention relates generally to the issue of improvement of sealing pair end contact, it is characterized in that: mechanical sealing static ring is stretched out to end face and be nested in rotating ring, on the surface of its contact, offer successively cavity, pumping groove, wherein on first stationary ring end face, offer along circumferentially and the cavity being radially evenly distributed, structure can be triangle, rectangle, Hexagon, circle, circular cross-section etc., and structural parameter are: micropore column number is n=12～30, circumferentially perforate Length Ratio
radial aperture Length Ratio γ=0.4～0.8, micropore degree of depth h=5～20 μ m, radius r=20～50 μ m; Near offering pumping groove on the rotating ring end face of internal diameter, its grooved can be spiral line type, circular arc line style, bias type, T font, chevron shaped etc., and groove depth is 5～10 μ m, and groove number is 6～20.
Effect of the present invention is mainly: (1) is offering nick chamber near on outer radius stationary ring end face, and the opening force that its dynamic pressure effect produces can greatly improve the friction, lubrication state of seal face, forms first sealing herein; (2) in mechanical seal, on the rotating ring end face near inner radius, offer pumping groove, play fluid pumping effect and dynamic pressure effect, when increasing opening force, low voltage side leakage liquid is pumped to high pressure side, upstream, reduce leakage rate.When friction pair does not rotate, under initial tension of spring, lean on the end face of inner radius to fit tightly, the leakage causing in the time of can effectively preventing parking or low-speed running, forms second sealing herein; Axial leakage passage between (3) two seal faces, plays the effect of clearance seal or labyrinth seal, can effectively reduce the pressure of leaking medium, has formed three seals; (4) dynamic and static ring is nested, when real-world operation, has formed similarly " bearing effect ", can better improve lubricating status and the heat radiation of sealing pair.
Accompanying drawing explanation
Fig. 1 is rotating ring end-face structure schematic diagram of the present invention.
Fig. 2 is stationary ring end-face structure schematic diagram of the present invention.
Fig. 3 is the schematic diagram of dynamic and static ring assembling of the present invention.
Fig. 4 is sealing principle schematic diagram of the present invention.
The drawing of Fig. 4 is described as follows:
1-stationary ring; 2-rotating ring; 3-driving pin; 4-spring; 5-spring seat; 6-Cock screw; 7-transmission screw; 8-rotating ring O shape circle; 9-stationary ring O shape circle; 10-stop pin; 11-gland; 12-throw-out collar; 13-axle sleeve;
Embodiment
End face micro forming in the present invention can adopt the processes such as electrical spark, electrochemical corrosion, laser beam machining.
On mechanical sealing linkage ring end face, offer along the symmetrical pumping spiral chute of rotating center, as shown in Figure 1; Groove is opened on c-d surface, groove depth 5～10 μ m, 6～20 of groove numbers, the distance h of rotating ring outer footpath end face and stationary ring assembling
1compare h
3large 4～10 μ m, h
4with h
5ratio be 1～1.5 times; On stationary ring end face, offer along circumferential and radially equally distributed micropore, as shown in Figure 2; Micropore column number is n=12～30, micropore degree of depth h=5～20 μ m, and radius r=20～50 μ m, stationary ring stretches out step h
6be 4～8mm, the erection drawing of dynamic and static ring as shown in Figure 3; The fundamental diagram of seal ring as shown in Figure 4.When host-initiated rotates, with the viscous fluid medium of certain pressure, enter the seal clearance a-b-c-d of rotating ring 2 and stationary ring 1, wherein seal clearance h
2be 10～15 μ m, the pumping groove of offering due to rotating ring end face and the nick chamber on stationary ring end face, utilize the pumping effect of pumping groove effectively to reduce leakage, utilizes the dynamic pressure effect in groove and chamber to guarantee end face non-contact, lubricating end surface state be can effectively improve, non-contact, zero leakage realized.
The above; only enumerating the way of realization of the present invention's design; not the present invention is done to any type of restriction; protection scope of the present invention comprises that those skilled in the art conceive thinkable equivalent technologies means according to the present invention; all change, modification and differentiation etc. of above embodiment being made to any equivalent variations according to the present invention, all belong to protection scope of the present invention.
Claims (4)
1. realize the non-contacting multiterminal face of a zero leakage combined mechanical sealing, it is characterized in that: at mechanical sealing friction pairs, multiterminal face be radially set and offer respectively nick chamber, pumping groove, making dynamic and static ring realize many end face seals.
2. the non-contacting multiterminal face of the zero leakage combined mechanical sealing of realizing according to claim 1, it is characterized in that: cavity is along circumferentially and being radially evenly distributed, cavity can be triangle, rectangle, Hexagon, circle, circular cross-section etc., micropore column number is n=12～30, its circumferential perforate Length Ratio
radial aperture Length Ratio γ=0.4～0.8, the micropore degree of depth h=5～20 μ m that opens, the pore radius r=20～50 μ m that opens.
3. the non-contacting multiterminal face of the zero leakage combined mechanical sealing of realizing according to claim 1, it is characterized in that: the grooved of pumping groove can be spiral line type, circular arc line style, bias type, T font, chevron shaped, its groove is opened at end face internal diameter, and groove depth is 5～10 μ m, and groove number is 6～20.
4. the non-contacting multiterminal face of the zero leakage combined mechanical sealing of realizing according to claim 1, is characterized in that: pumping groove, cavity can be opened at rotating ring end face or stationary ring end face, and rotating ring can be mutually nested with stationary ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310563469.1A CN103557334A (en) | 2013-11-14 | 2013-11-14 | Multiple-end face combined type mechanical seal for realizing zero leakage and non-contact |
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|---|---|---|---|
| CN201310563469.1A CN103557334A (en) | 2013-11-14 | 2013-11-14 | Multiple-end face combined type mechanical seal for realizing zero leakage and non-contact |
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| CN103557334A true CN103557334A (en) | 2014-02-05 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982662A (en) * | 2014-06-11 | 2014-08-13 | 湘潭电机股份有限公司 | Rotary sealing device |
| CN106015081A (en) * | 2016-06-30 | 2016-10-12 | 温州市康而达实业有限公司 | Fan-shaped air power separation type sealing ring |
| CN108547952A (en) * | 2018-05-16 | 2018-09-18 | 苏州科耐迈克低温装备科技有限公司 | Labyrinth type end face mechanical sealing device |
| CN108710750A (en) * | 2018-05-17 | 2018-10-26 | 沈阳工业大学 | Stepped tooth labyrinth seal structure parameters optimization method |
| CN111542713A (en) * | 2018-01-12 | 2020-08-14 | 伊格尔工业股份有限公司 | Sliding component |
| CN112128381A (en) * | 2020-10-26 | 2020-12-25 | 常熟理工学院 | Sealing device for variable working condition gas-liquid two-phase fluid medium |
| CN114060523A (en) * | 2021-11-10 | 2022-02-18 | 浙江环誉泵业科技有限公司 | Step mechanical seal with compact structure |
| US11320052B2 (en) | 2018-02-01 | 2022-05-03 | Eagle Industry Co., Ltd. | Sliding components |
| US11391376B2 (en) | 2016-08-15 | 2022-07-19 | Eagle Industry Co., Ltd. | Sliding component |
| US11692628B2 (en) | 2020-10-26 | 2023-07-04 | Changshu Institute Of Technology | Sealing device for gas-liquid two-phase fluid medium under variable working conditions |
| EP4130524A4 (en) * | 2020-06-05 | 2023-12-06 | Harmonic Drive Systems Inc. | Lubricant sealing structure, wave-motion gear device and actuator |
| US11852241B2 (en) | 2019-02-04 | 2023-12-26 | Eagle Industry Co., Ltd. | Sliding component |
| US11852244B2 (en) | 2019-02-04 | 2023-12-26 | Eagle Industry Co., Ltd. | Sliding component and method of manufacturing sliding member |
| US11913454B2 (en) | 2020-07-06 | 2024-02-27 | Eagle Industry Co., Ltd. | Sliding component |
| US11933303B2 (en) | 2020-07-06 | 2024-03-19 | Eagle Industry Co., Ltd. | Sliding component |
| US12104598B2 (en) | 2020-07-06 | 2024-10-01 | Eagle Industry Co., Ltd. | Eccentric sliding assembly with a plurality of dynamic pressure generation mechanisms |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6341782B1 (en) * | 2000-03-03 | 2002-01-29 | Surface Technologies Ltd | Lubricated seals having micropores |
| CN1667302A (en) * | 2005-04-05 | 2005-09-14 | 江苏大学 | Method for realizing zero leakage and non-contact mechanical seal |
| CN101016949A (en) * | 2007-02-15 | 2007-08-15 | 浙江工业大学 | Variable distribution porous end face mechanical sealing structure |
| CN101696728A (en) * | 2009-10-23 | 2010-04-21 | 浙江工业大学 | Liquid lubricated end face seal structure with cross-scale surface texture characteristic |
| CN103016743A (en) * | 2012-12-13 | 2013-04-03 | 江苏大学 | Mechanical seal capable of implementing zero wear, zero leakage and preventing solid particles |
-
2013
- 2013-11-14 CN CN201310563469.1A patent/CN103557334A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6341782B1 (en) * | 2000-03-03 | 2002-01-29 | Surface Technologies Ltd | Lubricated seals having micropores |
| CN1667302A (en) * | 2005-04-05 | 2005-09-14 | 江苏大学 | Method for realizing zero leakage and non-contact mechanical seal |
| CN101016949A (en) * | 2007-02-15 | 2007-08-15 | 浙江工业大学 | Variable distribution porous end face mechanical sealing structure |
| CN101696728A (en) * | 2009-10-23 | 2010-04-21 | 浙江工业大学 | Liquid lubricated end face seal structure with cross-scale surface texture characteristic |
| CN103016743A (en) * | 2012-12-13 | 2013-04-03 | 江苏大学 | Mechanical seal capable of implementing zero wear, zero leakage and preventing solid particles |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982662A (en) * | 2014-06-11 | 2014-08-13 | 湘潭电机股份有限公司 | Rotary sealing device |
| CN106015081A (en) * | 2016-06-30 | 2016-10-12 | 温州市康而达实业有限公司 | Fan-shaped air power separation type sealing ring |
| US11391376B2 (en) | 2016-08-15 | 2022-07-19 | Eagle Industry Co., Ltd. | Sliding component |
| CN111542713A (en) * | 2018-01-12 | 2020-08-14 | 伊格尔工业股份有限公司 | Sliding component |
| US11603934B2 (en) | 2018-01-12 | 2023-03-14 | Eagle Industry Co., Ltd. | Sliding component |
| US11619308B2 (en) | 2018-02-01 | 2023-04-04 | Eagle Industry Co., Ltd. | Sliding components |
| US11320052B2 (en) | 2018-02-01 | 2022-05-03 | Eagle Industry Co., Ltd. | Sliding components |
| CN108547952A (en) * | 2018-05-16 | 2018-09-18 | 苏州科耐迈克低温装备科技有限公司 | Labyrinth type end face mechanical sealing device |
| CN108710750A (en) * | 2018-05-17 | 2018-10-26 | 沈阳工业大学 | Stepped tooth labyrinth seal structure parameters optimization method |
| US11852241B2 (en) | 2019-02-04 | 2023-12-26 | Eagle Industry Co., Ltd. | Sliding component |
| US11852244B2 (en) | 2019-02-04 | 2023-12-26 | Eagle Industry Co., Ltd. | Sliding component and method of manufacturing sliding member |
| EP4130524A4 (en) * | 2020-06-05 | 2023-12-06 | Harmonic Drive Systems Inc. | Lubricant sealing structure, wave-motion gear device and actuator |
| US11913454B2 (en) | 2020-07-06 | 2024-02-27 | Eagle Industry Co., Ltd. | Sliding component |
| US11933303B2 (en) | 2020-07-06 | 2024-03-19 | Eagle Industry Co., Ltd. | Sliding component |
| US12104598B2 (en) | 2020-07-06 | 2024-10-01 | Eagle Industry Co., Ltd. | Eccentric sliding assembly with a plurality of dynamic pressure generation mechanisms |
| WO2022088272A1 (en) * | 2020-10-26 | 2022-05-05 | 常熟理工学院 | Sealing device for variable-working-condition gas-liquid two-phase fluid medium |
| CN112128381B (en) * | 2020-10-26 | 2021-07-20 | 常熟理工学院 | Sealing device for variable working condition gas-liquid two-phase fluid medium |
| US11692628B2 (en) | 2020-10-26 | 2023-07-04 | Changshu Institute Of Technology | Sealing device for gas-liquid two-phase fluid medium under variable working conditions |
| CN112128381A (en) * | 2020-10-26 | 2020-12-25 | 常熟理工学院 | Sealing device for variable working condition gas-liquid two-phase fluid medium |
| CN114060523A (en) * | 2021-11-10 | 2022-02-18 | 浙江环誉泵业科技有限公司 | Step mechanical seal with compact structure |
| CN114060523B (en) * | 2021-11-10 | 2024-05-17 | 浙江环誉泵业科技有限公司 | Ladder mechanical seal with compact structure |
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Application publication date: 20140205 |