CN101737316A - Piston with compound piston ring - Google Patents
Piston with compound piston ring Download PDFInfo
- Publication number
- CN101737316A CN101737316A CN201010101244A CN201010101244A CN101737316A CN 101737316 A CN101737316 A CN 101737316A CN 201010101244 A CN201010101244 A CN 201010101244A CN 201010101244 A CN201010101244 A CN 201010101244A CN 101737316 A CN101737316 A CN 101737316A
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- ring
- grommet
- outer shroud
- piston
- piston ring
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Abstract
A compound piston ring comprises a nicked circular ring. The piston ring is characterized in that the piston ring is composed of outer rings and bushing rings; the outer rings are nicked resin circular rings and the bushing rings are metal circular rings with openings; grooves matched with the bushing rings are arranged along the inner periphery of the outer rings; the depth of the grooves is equal to the width of the bushing rings; and the bushing rings are embedded in the grooves of the outer rings. The invention has the following advantages: the piston ring is flexible outside and hard inside, ensures the piston to be closely fit with the cylinder wall and has the advantages of heat resistance, wear resistance, high strength and toughness, good tightness and long service life.
Description
Technical field
The invention belongs to the field of sealing technology of mechanical cylinder and piston, relate in particular to and be used for the supporting multiple-piece piston-ring of piston.
Background technique
In reciprocating machine, piston ring is important component.The effect of piston ring realizes sealing exactly, and the quality of its performance directly influences the reliability of reciprocating machine, economical and working life.In the prior art, aspects such as high-abrasive material are all plated in improvement to piston ring on opening form, the combination of several monocycle and piston ring, its deficiency is piston ring packing weak effect, life-span weak point, rubs greatly, General is not good enough, can not take into account the combination property of several respects such as life-span, sealing effect and friction of piston ring.
Summary of the invention
Purpose of the present invention is exactly for solving piston ring packing weak effect, short, the big problem that rubs of life-span, a kind of sealed piston ring group of combination being provided.
Technological scheme of the present invention is: a kind of compound piston ring, comprise nicked annulus, it is characterized in that described piston ring is made up of outer shroud and grommet, outer shroud is the resin annulus that otch is arranged, and grommet is the metal cirque that opening is arranged, and the inner circumference upper edge inner circumference of outer shroud has the groove that matches with grommet, the degree of depth of groove equals the ring width of grommet, grommet is all embedded in the groove of outer shroud, and the opening on otch on the outer shroud and the described grommet does not overlap, and is the dislocation assembling.
A kind of compound piston ring of the present invention, the otch that it is characterized in that described outer shroud are a kind of in angular cut or the straight cut.
A kind of compound piston ring of the present invention, the outer peripheral surface that it is characterized in that described outer shroud is any one in flat circumferential surface or " v " font circumferential surface, and described " v " font circumferential surface is a circumferential surface from the both sides of circumference gradually to the recessed circumferential surface of circumferential surface center line.
A kind of compound piston ring of the present invention is characterized in that the inner circumference upper edge inner circumference of described outer shroud has the groove that matches with grommet, is a kind of in semi-circular recesses or the rectangular recess; The cross section of the ring of described grommet is a kind of in rectangle or the circle.
A kind of piston with compound piston ring preparation of the present invention with compound piston ring, comprise piston and the piston ring that is installed on the piston, it is characterized in that described piston ring is a compound piston ring, compound piston ring is made up of outer shroud and grommet, outer shroud is the resin annulus that otch is arranged, and grommet is the metal cirque that opening is arranged, and the inner circumference upper edge inner circumference of outer shroud has the groove that matches with grommet, the degree of depth of groove equals the ring width of grommet
Grommet all embeds in the groove of outer shroud, and the opening on otch on the outer shroud and the described grommet does not overlap, and is the dislocation assembling.
A kind of piston with compound piston ring preparation of the present invention with compound piston ring, it is characterized in that described piston has the twice compound piston ring, the twice compound piston ring is respectively compression ring and oil ring, the twice compound piston ring is installed in respectively in the twice annular groove of piston, compression ring is the top piston ring on the piston, and oil ring is the second road piston ring on the piston; The outer shroud of described compression ring is the resin annulus with angular cut, and the outer shroud outer peripheral surface of compression ring is flat circumferential surface, and the groove on the outer shroud inner circumference of compression ring is a semi-circular recesses; The grommet of described compression ring is the metal cirque that has opening, and the cross section of the ring of the grommet of compression ring is circular; The outer shroud of described oil ring is the resin annulus with straight cut, and the outer peripheral surface of the outer shroud of oil ring is " v " font circumferential surface, and the groove on the outer shroud inner circumference of oil ring is a rectangular recess; The grommet of oil ring is the metal cirque that has opening, and the cross section of the ring of the grommet of oil ring is a rectangle.
Piston of the present invention, the characteristics of high temperature resistant, wear-resisting, the characteristics that tightness is good of external resin ring and excellent mechanical intensity that the metal grommet has and good elastic force have been given full play to, remedy each other, excellent mechanical intensity that the metal grommet has and good elastic force have remedied the elastic force deficiency of resin outer shroud, and the characteristics high temperature resistant, wear-resisting, that tightness is good of external resin ring have remedied wear-resisting, the bubble-tight deficiency of metal grommet.Piston with piston preparation of the present invention with compound piston ring, can be according to the concrete environmental selection compound piston ring of pistons work, piston with compound piston ring preparation of the present invention with twice compound piston ring, can make good hermetic seal and the oil seal of maintenance between cylinder casing wall and the piston, wherein, compression ring is the hermetic seal that keeps between cylinder and piston; Oil ring is to scrape off lubricant oil unnecessary on the cylinder wall, avoids too much lubricant oil to enter cylinder, and flows into system with working medium.Because the gas pressure of the oil ring inboard of piston is very low, in order to make oil ring cylinder wall is applied enough pressure, reduces the cylindrical surface of contact, the outer peripheral surface face that contacts with cylinder wall of the outer shroud of oil ring is made " v " font circumferential surface.The opening arranged in dislocation of the otch of outer shroud and grommet can effectively prevent the leakage at junction plane place.
Advantage of the present invention is: the structure of piston ring is soft outside but hard inside, makes piston can be fitted between piston and the cylinder wall existing excellent sealing closely, good wear resistance is arranged again, and can reduce mechanical friction, have heat-resisting, wear-resisting, strength and toughness is high, good airproof performance, the advantage of long service life
Description of drawings
The present invention has 5 width of cloth accompanying drawings.Wherein:
Fig. 1 is the structure of piston schematic representation with compound piston ring
Fig. 2 is the structural representation with compound piston ring of angular cut
Fig. 3 is the side schematic view of Fig. 2
Fig. 4 is the structural representation with compound piston ring of straight cut
Fig. 5 is the side schematic view of Fig. 4
Among the figure: 1, piston, 2, the outer shroud of the compound piston ring of angular cut, 3, the grommet of the compound piston ring of angular cut, 4, the outer shroud of the compound piston ring of straight cut, 5, the grommet of the compound piston ring of straight cut, 6, the otch of the outer shroud of the compound piston ring of angular cut, 7, the opening of the grommet of the compound piston ring of angular cut, 8, the otch of the outer shroud of the compound piston ring of straight cut, 9, the opening of the grommet of the compound piston ring of straight cut.
Embodiment
The invention will be further described below in conjunction with the embodiment of accompanying drawing.Embodiment is the piston with twice compound piston ring.Have the twice annular groove on the piston 1.Compression ring is the first road compound piston ring on the piston, and oil ring is the second road compound piston ring on the piston; The outer shroud 2 of the compression ring of the first road compound piston ring is the resin annulus with angular cut 6, and the outer peripheral surface of compression ring outer shroud 2 is flat circumferential surfacies, and the groove on the outer shroud of compression ring (2) inner circumference is a semi-circular recesses; The grommet of compression ring (3) is the metal cirque that has opening (7), the cross section of the ring of the grommet of compression ring (3) is circular, the whole circumference of the grommet of compression ring (3) is inlaid in the groove on outer shroud (2) inner circumference of compression ring, opening 7 on the otch 6 gentle lining papers rings 3 on the compression ring outer shroud 2 does not overlap, and is the dislocation assembling; The outer shroud of the oil ring of the second road compound piston ring (4) is the resin annulus with straight cut (8), and the outer peripheral surface of the outer shroud of oil ring (4) is " v " font circumferential surface, and the groove on the outer shroud of oil ring (4) inner circumference is a rectangular recess; The grommet of oil ring (5) is the metal cirque that has opening (9), the cross section of the ring of the grommet of oil ring (5) is a rectangle, in the rectangular recess on the outer shroud that is inlaid into oil ring fully (2) inner circumference of the grommet of oil ring (5), otch 8 on the oil ring outer shroud 4 and the opening 9 on the oil ring grommet 5 do not overlap, and are the dislocation assembling.The compression ring that assembles is packed in the first road groove of piston 1, the oil ring that assembles is packed in the second road groove of piston 1, the piston with twice compound piston ring just combination is finished.Such piston in combination has good sealing effect, and the life-span is long, and it is little to rub.
Claims (6)
1. compound piston ring, comprise nicked annulus, it is characterized in that described piston ring is by outer shroud (2,4) and grommet (3,5) form, outer shroud (2,4) for the resin annulus of otch is arranged, grommet (3,5) for the metal cirque of opening is arranged, outer shroud (2,4) inner circumference upper edge inner circumference has and grommet (3,5) groove that matches, the degree of depth of groove equals grommet (3,5) ring width, make grommet (3,5) all embed outer shroud (2,4) in the groove, outer shroud (2,4) otch (6 on, 8) and described grommet (3,5) opening (7 on, 9) do not overlap, be the dislocation assembling.
2. according to the described a kind of compound piston ring of claim 1, the otch that it is characterized in that described outer shroud (2,4) is a kind of in angular cut (6) or the straight cut (8).
3. according to the described a kind of compound piston ring of claim 2, the outer peripheral surface that it is characterized in that described outer shroud (2,4) is any one in flat circumferential surface or " v " font circumferential surface, and described " v " font circumferential surface is a circumferential surface from the both sides of circumference gradually to the recessed circumferential surface of circumferential surface center line.
4. according to the described a kind of compound piston ring of claim 3, it is characterized in that the inner circumference upper edge inner circumference of described outer shroud (2,4) has the groove that matches with grommet (3,5), is a kind of in semi-circular recesses or the rectangular recess; The cross section of the ring of described grommet (3,5) is a kind of in rectangle or the circle.
5. piston with compound piston ring, comprise piston and the piston ring that is installed on the piston, it is characterized in that described piston ring is a compound piston ring, compound piston ring is by outer shroud (2,4) and grommet (3,5) form, outer shroud (2,4) for the resin annulus of otch is arranged, grommet (3,5) for the metal cirque of opening is arranged, outer shroud (2,4) inner circumference upper edge inner circumference has and grommet (3,5) groove that matches, the degree of depth of groove equals grommet (3,5) ring width, make grommet (3,5) all embed outer shroud (2,4) in the groove, outer shroud (2,4) otch (6 on, 8) and described grommet (3,5) opening (7 on, 9) do not overlap, be the dislocation assembling.
6. according to the described a kind of piston of claim 5 with compound piston ring, it is characterized in that described piston has the twice compound piston ring, the twice compound piston ring is respectively compression ring and oil ring, the twice compound piston ring is installed in respectively in the twice annular groove of piston, compression ring is the first road compound piston ring on the piston, and oil ring is the second road compound piston ring on the piston; The outer shroud of described compression ring (2) is the resin annulus with angular cut (6), and the outer shroud of compression ring (2) outer peripheral surface is flat circumferential surface, and the groove on the outer shroud of compression ring (2) inner circumference is a semi-circular recesses; The grommet of described compression ring (3) is the metal cirque that has opening (7), and the cross section of the ring of the grommet of compression ring (3) is circular; The outer shroud of described oil ring (4) is the resin annulus with straight cut (8), and the outer peripheral surface of the outer shroud of oil ring (4) is " v " font circumferential surface, and the groove on the outer shroud of oil ring (4) inner circumference is a rectangular recess; The grommet of oil ring (5) is the metal cirque that has opening (9), and the cross section of the ring of the grommet of oil ring (5) is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101244A CN101737316A (en) | 2010-01-25 | 2010-01-25 | Piston with compound piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101244A CN101737316A (en) | 2010-01-25 | 2010-01-25 | Piston with compound piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101737316A true CN101737316A (en) | 2010-06-16 |
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ID=42461225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010101244A Pending CN101737316A (en) | 2010-01-25 | 2010-01-25 | Piston with compound piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101737316A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103827493A (en) * | 2011-09-30 | 2014-05-28 | 通用电气健康护理生物科学股份公司 | Piston pump and piston assembly therefor |
| CN111237163A (en) * | 2019-12-31 | 2020-06-05 | 重庆气体压缩机厂有限责任公司 | Piston ring sealing system with long service life |
-
2010
- 2010-01-25 CN CN201010101244A patent/CN101737316A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103827493A (en) * | 2011-09-30 | 2014-05-28 | 通用电气健康护理生物科学股份公司 | Piston pump and piston assembly therefor |
| CN111237163A (en) * | 2019-12-31 | 2020-06-05 | 重庆气体压缩机厂有限责任公司 | Piston ring sealing system with long service life |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100616 |