CN103527790B - A kind of metal self-lubricating piston ring - Google Patents
A kind of metal self-lubricating piston ring Download PDFInfo
- Publication number
- CN103527790B CN103527790B CN201310477262.2A CN201310477262A CN103527790B CN 103527790 B CN103527790 B CN 103527790B CN 201310477262 A CN201310477262 A CN 201310477262A CN 103527790 B CN103527790 B CN 103527790B
- Authority
- CN
- China
- Prior art keywords
- piston ring
- sealing surface
- ring body
- arc groove
- sealing
- Prior art date
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- 239000002184 metal Substances 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000005461 lubrication Methods 0.000 abstract description 4
- 239000000314 lubricant Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Abstract
The invention belongs to fluid movable sealing field, be specifically related to a kind of metal self-lubricating piston ring.The present invention is evenly arranged with multiple arc groove on positive and negative two sealing surfaces of piston ring body respectively, thus produce thermohydrodynamic wedge effect, improve piston ring sealing property and sealing surface lubrication circumstances, and liquid circulates along with multiple arc grooves, thermal diffusivity is good.It addition, the piston ring body in the present invention uses CuSn95C5 material to make, substantially increase the elasticity of piston ring body, fatigue resistance, wearability, machinability and self-lubricant anti-friction.
Description
Technical field
The invention belongs to fluid movable sealing field, relate to a kind of piston ring, be specifically related to a kind of metal
Self-lubricating piston ring.
Background technology
Existing piston ring is mainly used in Aero-Space, engineering machinery, military vehicle, metallurgical machine
In the system and devices such as tool, it is the key element of drive system, if piston ring damages, then hydraulic pressure control
System processed will break down, thus cause handling inefficacy.At present vehicle power and drive mechanism
High power density is the important development direction of modern vehicle, and this needs in less volumetric spaces
Realize bigger engine power and power transmission ability thereof.Realize the effective way of this feature
Just being to try to improve rotating speed, in this case, the linear velocity of actuated element and piston ring will
Significantly improve.Utilize the clutch of drive system, carry out pressure conversion by fixing revolving part,
Pressure improves just can effectively reduce cylinder sizes, and therefore high power density modern vehicle is to power train
The pressure that in system, piston ring is born and rotating speed propose the highest requirement.
Chinese patent Patent No. (CN202194829U) discloses a kind of entitled: novel
Roots blower packing flange, the surfacing of this piston ring is carbon fiber reinforced plastic, but this material
Mechanical strength is relatively low, yielding after stand under load, and linear expansion coefficient is big, is not suitable for high PV value
Working environment.
It addition, " piston ring type rotary sealing appts and performance study thereof ", " actuating device movable sealing
Failure analysis and experimental study " etc. described in document, current piston ring is typically opened uniformly at two end faces
The rectangle chute of distribution, these chute communication seals ring both sides, segment fluid flow is released by chute,
In starting process, it is difficult to form stronger hydrodynamic effect, especially under environment under high pressure,
Highly pressurised liquid or impurity particle leak easily by hydrodynamic lubrication film, and this chute liquid follows
Ring is not enough, and groove edge cooling effect is poor.
Summary of the invention
In order to solve the problem in background technology, the invention provides a kind of at high pressure, height turn
Under the operating mode of speed, amount of leakage is little, be unlikely to deform and the metal self-lubricating piston ring of length in service life.
The concrete technical scheme of the present invention is:
The present invention proposes a kind of metal self-lubricating piston ring, and including piston ring body, piston ring body includes
Positive sealing surface and anti-sealing surface, it is characterised in that: it is provided with arc groove on described positive sealing surface.
It is provided with arc groove on above-mentioned anti-sealing surface.
Above-mentioned arc groove quantity on positive sealing surface and anti-sealing surface is one or more.
Above-mentioned arc groove quantity on single sealing surface is 7, and equal at circumferencial direction
Even distribution.
Arc groove on above-mentioned positive sealing surface is arranged with the arc groove dislocation on anti-sealing surface.
Above-mentioned piston ring body uses CuSn95C5 material to make.
The invention has the beneficial effects as follows:
1, in the present invention two sealing surfaces of piston ring body to be evenly arranged with multiple circular arc respectively recessed
Multiple arc grooves dislocation of groove and two sealing surfaces is arranged, thus produces thermohydrodynamic wedge
Effect, improves piston ring sealing property and sealing surface lubrication circumstances, and liquid is along with multiple circles
Arc fluting circulates, and thermal diffusivity is good.
2, the piston ring body in the present invention have employed CuSn95C5 material and makes, and is greatly improved
The elasticity of piston ring body, fatigue resistance, wearability, machinability and self-lubricant anti-friction.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the present invention.
Fig. 2 is the front view of the present invention.
1-piston ring body, 2-arc groove.
Detailed description of the invention
In conjunction with Fig. 1, Fig. 2, the metal self-lubricating piston ring proposing the present invention is described in detail.
The present invention proposes a kind of metal self-lubricating piston ring, including piston ring body 1, piston ring body 1
Including positive sealing surface and anti-sealing surface, wherein, positive sealing surface is provided with arc groove 2, works as stream
Body passes through arc groove 2, produces thermohydrodynamic wedge effect, improves piston ring sealing property and close
Front cover lubrication circumstances.
As preferably, in the case of piston ring needs to carry out dual face seals, the anti-sealing surface of this piston ring
On be also equipped with arc groove 2.
In order to improve mobility and thermal diffusivity, this piston ring body 1 of fluid when using this piston ring
Positive sealing surface and anti-sealing surface on be respectively provided with multiple arc groove 2.
As optimal choice, the circular arc being uniformly arranged on positive sealing surface and anti-sealing surface in the present invention
The quantity of groove 2 is 7, and reason is through experimental results demonstrate, each sealing surface sets
Put 7 arc grooves 2 to ensure that in the case of the elasticity not destroying piston ring and toughness, rise
The best performance of circle.
As preferably, during so that use this piston ring, improve the mobility of fluid, just seal
7 arc grooves 2 and 7 arc grooves 2 dislocation of anti-sealing surface on face are arranged；Wherein,
It is separately positioned on the angle between positive sealing surface two arc grooves 2 adjacent with on anti-sealing surface
For β, typically choose β=21 °
In order to improve the fatigue resistance of piston ring body, wearability, machinability and self-lubricant anti-friction
Property, piston ring body 1 uses CuSn95C5 material to make.
Claims (1)
1. a metal self-lubricating piston ring, including piston ring body, piston ring body includes just sealing
Face and anti-sealing surface, it is characterised in that: it is provided with arc groove on described positive sealing surface；Described
It is provided with arc groove on anti-sealing surface；Described arc groove is on positive sealing surface and anti-sealing surface
Quantity be 7, and be uniformly distributed at circumferencial direction；Circular arc on described positive sealing surface
Groove is arranged with the arc groove dislocation on anti-sealing surface；Described piston ring body uses
CuSn95C5 material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310477262.2A CN103527790B (en) | 2013-10-11 | A kind of metal self-lubricating piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310477262.2A CN103527790B (en) | 2013-10-11 | A kind of metal self-lubricating piston ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103527790A CN103527790A (en) | 2014-01-22 |
| CN103527790B true CN103527790B (en) | 2016-11-30 |
Family
ID=
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3538978C1 (en) * | 1985-11-02 | 1987-04-02 | Krupp Mak Maschb Gmbh | Piston-ring arrangement for trunk pistons |
| CN2076623U (en) * | 1990-06-11 | 1991-05-08 | 机械电子工业部天津工程机械研究所 | Hydraulic moment changer having end-face sealing device |
| CN1904455A (en) * | 2005-03-03 | 2007-01-31 | 亨恩有限及两合股份公司 | Plug-type coupling with a molded sealing ring and venting means |
| CN203363151U (en) * | 2013-07-29 | 2013-12-25 | 慈溪市润鑫电器有限公司 | O-shaped seal ring used for waterway sealing |
| CN203571038U (en) * | 2013-10-11 | 2014-04-30 | 中国航天科技集团公司第六研究院第十一研究所 | Self-lubricating metal caulking ring |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3538978C1 (en) * | 1985-11-02 | 1987-04-02 | Krupp Mak Maschb Gmbh | Piston-ring arrangement for trunk pistons |
| CN2076623U (en) * | 1990-06-11 | 1991-05-08 | 机械电子工业部天津工程机械研究所 | Hydraulic moment changer having end-face sealing device |
| CN1904455A (en) * | 2005-03-03 | 2007-01-31 | 亨恩有限及两合股份公司 | Plug-type coupling with a molded sealing ring and venting means |
| CN203363151U (en) * | 2013-07-29 | 2013-12-25 | 慈溪市润鑫电器有限公司 | O-shaped seal ring used for waterway sealing |
| CN203571038U (en) * | 2013-10-11 | 2014-04-30 | 中国航天科技集团公司第六研究院第十一研究所 | Self-lubricating metal caulking ring |
Non-Patent Citations (1)
| Title |
|---|
| 彭旭东;谢友柏;顾永泉;陈逊.热流体动力楔机械密封性能参数的近似计算.《流体机械》.1997,第23~27页. * |
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