CN201696605U - Autocompensation piston ring - Google Patents
Autocompensation piston ring Download PDFInfo
- Publication number
- CN201696605U CN201696605U CN2010202646966U CN201020264696U CN201696605U CN 201696605 U CN201696605 U CN 201696605U CN 2010202646966 U CN2010202646966 U CN 2010202646966U CN 201020264696 U CN201020264696 U CN 201020264696U CN 201696605 U CN201696605 U CN 201696605U
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- China
- Prior art keywords
- piston ring
- piston
- ring
- breaking
- auto
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses an autocompensation piston ring, the ring body of the piston ring is provided with one or a plurality of openings which can enable the ring body to be broken in a circumferential direction, the breaking surfaces of the first breaking end and the second breaking end of each breaking opening are the planes which are manually parallel, an included angle (A) is formed between the breaking surface and the radial breaking surface of the ring body of the piston ring, and the included angle (A) is an acute angle. An elastic body is arranged on the contact surface of the second breaking end and a piston, and is a spring or an arc-shaped leaf spring. The utility model is suitable for various occasions using metal sealing rings, particularly for a piston-type power device, and can automatically compensate for the wear, and has good sealing performance, long service life and the like.
Description
Technical field
The utility model relates to a kind of piston ring, especially a kind of auto-compensating piston ring.
Background technique
Piston ring is widely used in generally being divided into compression ring and oil ring on the piston of train, automobile, boats and ships etc.Compression ring mainly seals, and avoids the high pressure mixed gas in the cylinder to leak.Oil ring plays the wiper lubrication effect.At present, the piston ring great majority all are to be combined by a plurality of piston ring plates.After the installation, because the elasticity of piston ring self, piston ring outer rim and cylinder wall fit tightly, and the interface between the piston ring plate fits tightly.Piston is done high-speed motion under high temperature and high pressure environment, repeated friction between piston ring outer rim and the cylinder wall, so the piston ring outer rim is easy to wearing and tearing.Along with the increase of wear extent, the gap between piston ring edge and the cylinder wall can be increasing.Also phase mutual friction between the interface between each piston ring plate, also there are wearing and tearing in piston ring plate joint, and it is big that the gap of these joints also can become along with the increase of wear extent.When above-mentioned gap increased to a certain degree, fuel oil and air gas mixture in the cylinder will be escaped from the gap, and the phenomenon of over-emitting black exhaust can take place, cause the waste and the befouling environment of fuel, also may make the machine power deficiency, inner pressure of air cylinder descends, temperature raises, and fuel consumption increases.At the problems referred to above, a lot of piston ring manufacturers improve by manufactured materials and manufacturing process to piston ring, as improving wear-resisting property in the chromium plating of piston ring working surface, improve the working life of piston ring.Though these measures have certain effect, because piston and piston ring are done linear reciprocating motion at a high speed under the environment of High Temperature High Pressure, add factors such as the interior carbon deposit of upper cylinder, chemical corrosion again, still be very restricted the working life of piston ring.And often change the piston ring of different size, and waste time and energy, also increased the user cost and the maintenance cost of machine.
The model utility content
The utility model is the deficiency that exists in the above-mentioned prior art for avoiding, a kind of auto-compensating piston ring is provided, so that piston ring can compensate automatically,, reduce user cost and maintenance cost to improve the sealability and the working life of piston ring after being worn.
The utility model be the technical solution problem by the following technical solutions.
The auto-compensating piston ring, its structural feature is that the ring body of described piston ring is provided with one or more openings that make that ring body circumferentially disconnects, first open end of each opening and the cleaved facet of second open end are the plane that is parallel to each other, the ring body of described cleaved facet and piston ring an included angle A radially arranged between the section, described included angle A is an acute angle.
The structural feature of the utility model auto-compensating piston ring also is:
On described second open end and the contacted surface of contact of piston, be provided with elastomer, make second open end be subjected to radially and towards the tension force of piston ring periphery.
Described elastomer is spring or arc spring lamination.
Compared with the prior art, the utility model beneficial effect is embodied in:
In the utility model, piston ring is installed on the piston and after being installed on piston in the cylinder, piston ring outer rim and cylinder wall fit tightly; In gap-clearance of piston rings place, because elastomeric elastic force effect, the cleaved facet of the cleaved facet of second open end and first open end also fits tightly, so piston ring has excellent sealing performance.Owing to be provided with elastomer, make piston ring after being worn, also can under the effect of elastic force, be close on the cylinder wall, remain excellent sealing performance.The cleaved facet of gap-clearance of piston rings and the ring body of piston ring an included angle A radially arranged between the section, the cleaved facet of two open ends can keep fitting tightly under the effect of elastomer elastic force, even the cleaved facet of butt joint weares and teares mutually, gap between the cleaved facet of butt joint can not increase the phenomenon that cylinder also can not leak gas yet.Between piston ring and the cylinder wall and between the cleaved facet of two butt joints of gap-clearance of piston rings place, after wearing and tearing after a while, the surface roughness of fray can be more and more littler, and Percent of contact area is become better and better between the position that is in contact with one another, so sealability can further improve along with wear of piston-rings.Auto-compensating piston ring of the present utility model has the advantage of compensate for wear automatically, can improve the sealability and the working life of piston ring, prolongs the life cycle of piston ring, reduces the user cost and the maintenance cost of machine.
Description of drawings
Fig. 1 the utlity model has an opening and adopts the structural representation of spring as elastomeric auto-compensating piston ring.
Fig. 2 the utlity model has three openings and adopts the structural representation of spring as elastomeric auto-compensating piston ring.
Fig. 3 the utlity model has three openings and adopts the structural representation of arc spring lamination as elastomeric auto-compensating piston ring.
Label in accompanying drawing 1, accompanying drawing 2, the accompanying drawing 3: 1 piston ring, 11 first open ends, 12 second open ends, 2 elastomers, 3 openings.
Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, auto-compensating piston ring 1 of the present utility model, the ring body of piston ring 1 is provided with one or more openings 3 that make that ring body circumferentially disconnects, first open end 11 at each opening 3 place and the cleaved facet of second open end 12 are the plane that is parallel to each other, the ring body of cleaved facet and piston ring 1 an included angle A radially arranged between the section, included angle A is an acute angle.Described second open end 12 is provided with elastomer 2 with the contacted surface of contact of piston, make second open end 12 be subjected to radially and towards the tension force of piston ring 1 periphery.Elastomer 2 is spring or arc spring lamination.
During concrete enforcement,, need on piston body, to be provided with blind hole if adopt spring as elastomer.The optimized scope of included angle A is 30 °＜A＜75 °.
In the utility model, piston ring is installed on the piston and after being installed on piston in the cylinder, piston ring outer rim and cylinder wall fit tightly; In gap-clearance of piston rings place, because elastomeric elastic force effect, the cleaved facet of the cleaved facet of second open end and first open end also fits tightly, so piston ring has excellent sealing performance.Owing to be provided with elastomer, make piston ring after being worn, also can under the effect of elastic force, be close on the cylinder wall, remain excellent sealing performance.The cleaved facet of gap-clearance of piston rings and the ring body of piston ring an included angle A radially arranged between the section, the cleaved facet of two open ends can keep fitting tightly under the effect of elastomer elastic force, even the cleaved facet of butt joint weares and teares mutually, gap between the cleaved facet of butt joint can not increase the phenomenon that cylinder also can not leak gas yet.Between piston ring and the cylinder wall and between the cleaved facet of two butt joints of gap-clearance of piston rings place, after wearing and tearing after a while, the surface roughness of fray can be more and more littler, and Percent of contact area is become better and better between the position that is in contact with one another, so sealability can further improve along with wear of piston-rings.Auto-compensating piston ring of the present utility model has the advantage of compensate for wear automatically, can improve the sealability and the working life of piston ring, prolongs the life cycle of piston ring, reduces the user cost and the maintenance cost of machine.
Auto-compensating piston ring of the present utility model, has good automatic compensation ability, long service life, even the considerable wear amount is arranged, also can hold excellent sealing performance, thereby make motor can keep normal power, reduced the harmful gas content in the exhaust gas discharged, make toxic emission up to standard.Auto-compensating piston ring of the present utility model, 2～3 times of the life-span that is generally the conventional piston ring working life with auto-compensating piston ring of an opening have more than 10 times of the life-span that is generally the conventional piston ring working life of the auto-compensating piston ring of three openings.
The utility model is applicable to the occasion of various use metallic packing rings, is particularly useful for piston power plant.
Claims (3)
1. auto-compensating piston ring (1), the ring body that it is characterized in that described piston ring (1) is provided with one or more openings (3) that make that ring body circumferentially disconnects, first open end (11) that each opening (3) is located and the cleaved facet of second open end (12) are the plane that is parallel to each other, the ring body of described cleaved facet and piston ring (1) an angle (A) radially arranged between the section, described angle (A) is an acute angle.
2. auto-compensating piston ring according to claim 1, it is characterized in that on described second open end (12) and the contacted surface of contact of piston, being provided with elastomer (2), make second open end (12) be subjected to radially and towards the tension force of piston ring (1) periphery.
3. auto-compensating piston ring according to claim 2 is characterized in that described elastomer (2) is spring or arc spring lamination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202646966U CN201696605U (en) | 2010-07-15 | 2010-07-15 | Autocompensation piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202646966U CN201696605U (en) | 2010-07-15 | 2010-07-15 | Autocompensation piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201696605U true CN201696605U (en) | 2011-01-05 |
Family
ID=43397847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202646966U Expired - Fee Related CN201696605U (en) | 2010-07-15 | 2010-07-15 | Autocompensation piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201696605U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734250A (en) * | 2011-04-11 | 2012-10-17 | 上海宝钢化工有限公司 | Hydraulic oil cylinder |
| CN110168259A (en) * | 2016-12-13 | 2019-08-23 | 伯克哈特压缩机股份公司 | Piston ring and piston compressor for piston compressor |
| CN112459919A (en) * | 2020-11-07 | 2021-03-09 | 重庆海蓝星科技有限公司 | Piston ring and preparation method thereof |
-
2010
- 2010-07-15 CN CN2010202646966U patent/CN201696605U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734250A (en) * | 2011-04-11 | 2012-10-17 | 上海宝钢化工有限公司 | Hydraulic oil cylinder |
| CN110168259A (en) * | 2016-12-13 | 2019-08-23 | 伯克哈特压缩机股份公司 | Piston ring and piston compressor for piston compressor |
| CN112459919A (en) * | 2020-11-07 | 2021-03-09 | 重庆海蓝星科技有限公司 | Piston ring and preparation method thereof |
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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: 20110105 Termination date: 20130715 |