CN201582390U - Novel mechanical sealing ring with circumferential through groove added at inner-diameter end of radial spiral groove - Google Patents
Novel mechanical sealing ring with circumferential through groove added at inner-diameter end of radial spiral groove Download PDFInfo
- Publication number
- CN201582390U CN201582390U CN2009202308505U CN200920230850U CN201582390U CN 201582390 U CN201582390 U CN 201582390U CN 2009202308505 U CN2009202308505 U CN 2009202308505U CN 200920230850 U CN200920230850 U CN 200920230850U CN 201582390 U CN201582390 U CN 201582390U
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- slot
- circumferential
- groove
- radially
- mechanical seal
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Abstract
The utility model relates to a novel sealing structure which can effectively reduce sealing ring thermal deformation caused by friction and wear at the sealing end surface of a mechanical seal when a machine is started up. The structure can effective improve the problems in the cooling and the lubrication of the sealing ring when the machine is started up, reduce thermal deformation and force deformation, enhance the working stability of the mechanical seal and prolong the service life of the mechanical seal. The sealing structure is suitable for mechanical seal application fields in all liquid mediums, and is especially suitable for high-temperature, high-pressure and high-speed working conditions. The utility model has the advantages that the deformation of the sealing ring is small, the sealing and lubricating effect is stable and the service life of the mechanical seal is effectively prolonged.
Description
Technical field:
The friction that the present invention relates to mechanical seal is with lubricated, be a kind of former seal ring end face radially spiral fluted internal diameter Ba Qu increase a circumferential through slot, the fretting wear of seal ring end face when being intended to reduce start.
Background technique:
Mechanical seal is a kind of running shaft axial end seal arrangement that is widely used in fields such as petrochemical industry, Aero-Space.Along with developing rapidly of science and technology, mechanical seal is had higher requirement, particularly, proposed to be used for the upstream pumping mechanical seal of seal fluid medium, liquid lubrication in order to adapt to the requirement of bad working environments conditions such as high pressure, high temperature, high speed.In recent years, the research for upstream pumping mechanical seal mainly was the pattern that improves seal face around the target of " minimizing leakage rate " and " raising dynamic pressure effect ".Chinese patent 01279563.1 has proposed a kind of novel single-row staggered fluid dynamic pressure groove upstream pumping mechanical seal.This mechanical seal mainly is to offer the fluid dynamic pressure groove that a row length is staggered and be connected with an annular groove on seal ring end face (toroidal surface), thereby changed the end-face structure of conventional mechanical sealing dynamic pressure ring or static pressure ring, had good moment unlatching ability and in time get rid of the solid particle ability.But, the raising of this single-row staggered fluid dynamic pressure groove convection cell dynamic pressure effect, effect is not fully up to expectations when especially opening.Israel professor Etsion.I is at Model for mechanical seals with regularmicrosurface structure.Tribology Transactions, 39 (3): proposed the mechanical seal that surface (toroidal surface) has the microcosmic cavity in 677-683 (1996) one literary compositions, find by theoretical calculation and experimental study: the microcosmic cavity helps producing the hydrodynamic effect, thus this class mechanical seal improve lubricated, to improve aspect the fluid film rigidity effect obvious.But this nick chamber can not produce the pumping effect, reduces the problem of leaking so can't solve.Chinese patent 200510038704.9 discloses the end surface mechanical sealing that a kind of vallecular cavity makes up mutually.This mechanical seal is to offer microcosmic lubricating cavity with certain distributing position and macroscopical pumping groove of a definite form on the rotating ring of mechanical seal or stationary ring simultaneously.The combination of these two kinds of moulding makes the hydrodynamic effect of mechanical seal and pumping effect more remarkable.Be applicable to all liquid medium mechanical seals, be specially adapted under the working condition of high parameter (high temperature, high pressure, at a high speed).Major advantage is that microcosmic lubricating cavity and macroscopical pumping groove are combined, and has solved the leakage and the lubricated anti-attrition problem of sealing.But it is obvious inadequately for the lubrication state effect of improving when starting shooting.As seen, though above-mentioned mechanical seal is obtaining obvious progress aspect " reduce leak " and " improving the fluid film bearing capacity ", but still not fully up to expectations, especially the seal ring end-face friction situation when starting shooting to improve effect undesirable.
Summary of the invention:
The objective of the invention is to remedy above-mentioned deficiency, the fretting wear that can effectively reduce when start of proposition reduces the novel sealing structure of leakage rate.It mainly is the frictional heating at mechanical seal, the unequal problem of being heated, by improving seal ring structure, the wearing and tearing of reducing friction improve lubricated cooling effect, reduce thermal distortion, avoid hot tearing, reduce leakage rate, improve the stability of seal operation, better performance end face changes the shape effect, obtains even more ideal mechanical seal.
The present invention relates generally to the improvement problem of seal ring end face pattern, it is characterized in that: the radially spiral fluted internal diameter Ba Qu that offers at the rotating ring end face of mechanical seal increases a circumferential through slot, the circumferentially external diameter of through slot and radially spiral fluted internal diameter perforation, its degree of depth is constant and equal the spiral fluted groove depth, each cross-sectional width is identical vertically, spiral chute is got p=0.74～0.8 with the percentage that the circumferential zone of through slot accounts for whole seal ring end face width, and wherein radially the spiral fluted zone ratio that accounts for seal ring end face width is got p
1=0.7～0.74, the radial width of circumferential through slot accounts for the ratio of seal ring end face width and gets p
2=0.04～0.1, and keep p=p
1+ p
2This seal ring structure is applicable to the mechanical seal of all liquid mediums.
Effect of the present invention mainly is: (1) Ba Qu is positioned at the internal side diameter of seal ring end face, the external diameter of groove district and seal ring end face connects, the spiral fluted internal side diameter connects circumferential through slot, when static closure, can there be the small number of external high-pressure medium to infiltrate in the groove, when start, can fill the groove district fast, play lubrication; (3) on spiral chute radially, sealing weir, circumferentially can form micro circulation between through slot and flow, when start, can get rid of the impurity such as solid particle in the sealing medium quickly, avoided the wearing and tearing of solid particle to seal face.And circumferentially this through slot can overcome the uniform inadequately defective of external-open spiral chute pressure distribution, helps the even distribution of pressure.
Description of drawings:
Fig. 1 is seal ring structure figure of the present invention
Fig. 2 is that the A-A of structural drawing 1 is to sectional drawing
Fig. 3 is that the B-B of structural drawing 1 is to sectional drawing
Among the figure, 1-is the spiral seal groove radially; 2-seals the weir; The circumferential through slot of 3-; 4-seals the dam; ω-seal ring rotating speed; r
i-seal ring internal diameter; r
o-seal ring external diameter; b
1-spiral groove width; b
2-sealing weir is wide; h
g-spiral chute groove depth radially; h
1-axial through slot groove depth (=h
g); h
2-rotating ring thickness; r
G2The internal diameter of-circumferential through slot; r
G1-spiral fluted internal diameter the external diameter of through slot (also promptly, circumferentially) radially.
Embodiment:
The grooved processing mode of seal ring end face of the present invention adopts laser beam machining.
Embodiment 1: for r
o=25mm, r
iThe seal ring end face of=23mm, it is described to press preamble, gets p=0.78, p
1=0.7, p then
2=p-p
1Therefore=0.78-0.7=0.08 can get the radially internal diameter r of spiral seal groove (1)
G1Be r
G1=r
o-p
1* (r
o-r
i)=25-0.7 * (25-23)=23.6mm (also being the external diameter of circumferential through slot (3)), circumferentially the internal diameter r of through slot (3)
G2Be r
G2=r
o-p * (r
o-r
i)=25-0.78 * (25-23)=23.44mm, then the radial width of this circumferential through slot (3) is r
G1-r
G2=23.6-23.44=0.16mm, and this width is along circumferentially remaining unchanged, also be this circumferential through slot (3) width of arbitrary section is all identical vertically, if radially spiral seal groove (1) is got groove depth h
gBe 5 μ m, then circumferentially the spiral fluted degree of depth is also got h
1=5 μ m.
Embodiment 2: for r
o=35mm, r
iThe seal ring end face of=32mm, it is described to press preamble, gets p=0.8, p
1=0.7, p then
2=p-p
1=0.8-0.7=0.1 can get the radially internal diameter r of spiral seal groove (1) so
G1Be r
G1=r
o-p
1* (r
o-r
i)=35-0.7 * (35-32)=32.9mm (also being the external diameter of circumferential through slot (3)), circumferentially the internal diameter r of through slot (3)
G2Be r
G2=r
o-p * (r
o-r
i)=35-0.78 * (35-32)=32.66mm, then the radial width of this circumferential through slot (3) is r
G1-r
G2=32.9-32.66=0.2mm, and this width is along circumferentially remaining unchanged, also be this circumferential through slot (3) width of arbitrary section is all identical vertically, if radially spiral seal groove (1) is got groove depth h
gBe 10 μ m, then circumferentially the spiral fluted degree of depth is also got h
1=10 μ m.
Claims (2)
1. radially spiral chute internal diameter end novel mechanical sealing of increasing circumferential through slot, it is characterized in that: the internal diameter Ba Qu of the radially spiral seal groove of offering at the rotating ring end face of mechanical seal (1) increases a circumferential through slot (3), the circumferentially external diameter of through slot (3) and radially the internal diameter perforation of spiral seal groove (1), and circumferentially each cross-sectional width is identical vertically for through slot (3), and the degree of depth is constant and equal the radially groove depth of spiral seal groove (1).
2. a kind of radially spiral chute internal diameter end according to claim 1 is increased the novel mechanical sealing of circumferential through slot, it is characterized in that: described circumferential through slot (3) is got p=0.74～0.8 with the ratio that the radial zone of spiral seal groove (1) radially accounts for whole seal ring end face radial width, and wherein radially the zone of spiral seal groove (1) ratio that accounts for seal ring end face width is got p
1=0.7～0.74, the radial width of circumferential through slot (3) accounts for the ratio of seal ring end face radial width and gets p
2=0.04～0.1, and p=p
1+ p
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202308505U CN201582390U (en) | 2009-09-08 | 2009-09-08 | Novel mechanical sealing ring with circumferential through groove added at inner-diameter end of radial spiral groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202308505U CN201582390U (en) | 2009-09-08 | 2009-09-08 | Novel mechanical sealing ring with circumferential through groove added at inner-diameter end of radial spiral groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582390U true CN201582390U (en) | 2010-09-15 |
Family
ID=42724389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202308505U Expired - Fee Related CN201582390U (en) | 2009-09-08 | 2009-09-08 | Novel mechanical sealing ring with circumferential through groove added at inner-diameter end of radial spiral groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582390U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103090006A (en) * | 2013-02-04 | 2013-05-08 | 北京理工大学 | Spiral groove rotary sealing ring with cone-shaped cross section and used on vehicle |
| CN103090005A (en) * | 2013-02-04 | 2013-05-08 | 北京理工大学 | Spiral distributed multi-hole end face rotary sealing ring used on vehicle |
| CN105065675A (en) * | 2015-07-24 | 2015-11-18 | 西华大学 | Seal ring with streamline groove end face and mechanical seal device |
| CN105240279A (en) * | 2015-09-21 | 2016-01-13 | 山东双轮股份有限公司 | Reverse osmosis sea water desalination booster pump |
| 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 |
| CN106812947A (en) * | 2017-02-14 | 2017-06-09 | 四川日机密封件股份有限公司 | The non-contacting mechanical seal ring of combined fluid dynamic pressure groove |
| CN108825788A (en) * | 2018-07-19 | 2018-11-16 | 天津科技大学 | Mechanical sealing end face structure |
| CN108869749A (en) * | 2018-07-23 | 2018-11-23 | 浙江工业大学 | Open ellipse wire casing end face bidirectional rotation mechanical seal structure |
| CN109764134A (en) * | 2019-03-06 | 2019-05-17 | 西安石油大学 | It is a kind of with stablize air film connection annular groove dry-gas sealed friction pair rotating ring |
| CN110410504A (en) * | 2019-07-15 | 2019-11-05 | 北京航空航天大学 | A kind of mechanical seal end surface structure of varying depth spiral T-slot |
| CN113167390A (en) * | 2018-12-21 | 2021-07-23 | 伊格尔工业股份有限公司 | Sliding component |
| CN114857273A (en) * | 2022-03-31 | 2022-08-05 | 清华大学 | End face seal assembly |
| US11815184B2 (en) | 2018-11-30 | 2023-11-14 | Eagle Industry Co., Ltd. | Sliding component |
| US11821462B2 (en) | 2018-08-24 | 2023-11-21 | Eagle Industry Co., Ltd. | Sliding member |
| US11892081B2 (en) | 2019-07-26 | 2024-02-06 | Eagle Industry Co., Ltd. | Sliding component |
| US11933405B2 (en) | 2019-02-14 | 2024-03-19 | Eagle Industry Co., Ltd. | Sliding component |
-
2009
- 2009-09-08 CN CN2009202308505U patent/CN201582390U/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103016743B (en) * | 2012-12-13 | 2015-07-08 | 江苏大学 | Mechanical seal capable of implementing zero wear, zero leakage and preventing solid particles |
| CN103090006A (en) * | 2013-02-04 | 2013-05-08 | 北京理工大学 | Spiral groove rotary sealing ring with cone-shaped cross section and used on vehicle |
| CN103090005A (en) * | 2013-02-04 | 2013-05-08 | 北京理工大学 | Spiral distributed multi-hole end face rotary sealing ring used on vehicle |
| CN103090006B (en) * | 2013-02-04 | 2014-04-16 | 北京理工大学 | Spiral groove rotary sealing ring with cone-shaped cross section and used on vehicle |
| CN105065675A (en) * | 2015-07-24 | 2015-11-18 | 西华大学 | Seal ring with streamline groove end face and mechanical seal device |
| CN105065675B (en) * | 2015-07-24 | 2017-02-22 | 西华大学 | Seal ring with streamline groove end face and mechanical seal device |
| CN105240279A (en) * | 2015-09-21 | 2016-01-13 | 山东双轮股份有限公司 | Reverse osmosis sea water desalination booster pump |
| 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 |
| CN106812947A (en) * | 2017-02-14 | 2017-06-09 | 四川日机密封件股份有限公司 | The non-contacting mechanical seal ring of combined fluid dynamic pressure groove |
| CN108825788A (en) * | 2018-07-19 | 2018-11-16 | 天津科技大学 | Mechanical sealing end face structure |
| CN108869749A (en) * | 2018-07-23 | 2018-11-23 | 浙江工业大学 | Open ellipse wire casing end face bidirectional rotation mechanical seal structure |
| CN108869749B (en) * | 2018-07-23 | 2024-04-09 | 浙江工业大学 | Bidirectional rotary mechanical sealing structure for end face of open elliptic wire slot |
| US11821462B2 (en) | 2018-08-24 | 2023-11-21 | Eagle Industry Co., Ltd. | Sliding member |
| US11815184B2 (en) | 2018-11-30 | 2023-11-14 | Eagle Industry Co., Ltd. | Sliding component |
| CN113167390A (en) * | 2018-12-21 | 2021-07-23 | 伊格尔工业股份有限公司 | Sliding component |
| US11821521B2 (en) | 2018-12-21 | 2023-11-21 | Eagle Industry Co., Ltd. | Sliding component |
| US11933405B2 (en) | 2019-02-14 | 2024-03-19 | Eagle Industry Co., Ltd. | Sliding component |
| CN109764134A (en) * | 2019-03-06 | 2019-05-17 | 西安石油大学 | It is a kind of with stablize air film connection annular groove dry-gas sealed friction pair rotating ring |
| CN110410504A (en) * | 2019-07-15 | 2019-11-05 | 北京航空航天大学 | A kind of mechanical seal end surface structure of varying depth spiral T-slot |
| CN110410504B (en) * | 2019-07-15 | 2021-06-18 | 北京航空航天大学 | Mechanical seal end face structure of variable-depth spiral T-shaped groove |
| US11892081B2 (en) | 2019-07-26 | 2024-02-06 | Eagle Industry Co., Ltd. | Sliding component |
| CN114857273A (en) * | 2022-03-31 | 2022-08-05 | 清华大学 | End face seal assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20120908 |