CN2672305Y - Combined seal piston ring - Google Patents
Combined seal piston ring Download PDFInfo
- Publication number
- CN2672305Y CN2672305Y CN 03273426 CN03273426U CN2672305Y CN 2672305 Y CN2672305 Y CN 2672305Y CN 03273426 CN03273426 CN 03273426 CN 03273426 U CN03273426 U CN 03273426U CN 2672305 Y CN2672305 Y CN 2672305Y
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- CN
- China
- Prior art keywords
- subring
- shoulder
- piston ring
- indent
- opening
- Prior art date
- 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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Abstract
The utility model relates to a combined seal piston ring for the piston engine of internal combustion engine, air compressor, etc. The utility model comprises a subring I and a subring II. The subring I and the subring II are all provided with the openings. The subring I is provided with an outward convex shoulder which is concentric with the internal and the external circles of the subring II. The subring II is provided with an inward concave shoulder which is concentric with the internal and the external circles of the subring I. Wherein, the inward concave shoulder of the subring II is provided with a concavity. The outward convex shoulder of the subring I is provided with a projecting part, and the appearance of the projecting part is matched with the concavity of the inward concave shoulder. When the subring I and the subring II are mutually combined along the axial direction, the openings of the subring I and the subring II are mutually staggered. The utility model improves the compressive ratio in cylinder, has sufficient combustion, improves the horse of the internal combustion engine, has easy starting, saves the fuel and the engine oil, and reduces the pollution of the exhaust gas on the atmosphere.
Description
Affiliated technical field
The utility model relates to a kind of piston ring, especially a kind of combined sealed piston ring that is used for reciprocating machines such as internal-combustion engine, air compressor.
Background technique
Traditional piston ring has an opening because work in the environment of high temperature, high pressure on piston ring, stuck in the cylinder groove to prevent behind the expanded by heating, causes scuffing of cylinder bore.But so when internal combustion engine, gas enters next chamber from opening after can entering the gap of casing wall and piston space from the firing chamber, so the opening of piston ring becomes the central core of circulation of leakage, also is simultaneously the passage of scurrying oil.According to " piston ring " that railway publishing house publishes, " for general internal-combustion engine, air pressure is original 25% after encircling together, falls into 10% behind two road rings, behind three road rings 5% ".Along with long-term use, cylinder sleeve, piston ring wear and tear gradually, like this enlarged diameter of the relative piston ring of cylinder diameter; Owing to the elasticity of piston ring, the compensatory enlarged of piston ring meeting, the gap of opening can become greatly gradually like this, and the gas leakage oil leakage phenomenon is serious day by day, and air compression reduces than constantly in the cylinder, and the piston machine Operational Limits worsens until continuing use.
In recent years, in order to address this problem, some to have occurred the piston ring that two subrings are formed has been installed in a groove.Stagger by setting two openings in the subring, directly pour next chamber to avoid combustion gas, and utilize locating stud or be that non-round junction plane prevents that two rings from relatively rotating, in order to avoid align again owing to vibration makes two rings relatively rotate last opening gradually, in case and register, because the pressure that fuel gas flow produces, then opening just again can't stagger, and does not so just reach using effect originally.
A kind of " compound piston ring " disclosed in the Chinese patent 88215311.0, this piston ring is made up of main ring and inner loop, main ring is provided with groove in the collar extension inner radius, inner loop is being provided with locating stud with the corresponding diametric opposite side of collar extension, make locating stud insert the groove of main ring during assembling, main ring and inner loop are close together mutually and are contained on the piston; Or main ring and inner loop collar extension be processed into trapezoidal collar extension, be limited in the trapezoidal annular groove of piston main ring and inner loop are staggered with pin, adopt locating stud or pin with the two rings relative fixed, prevent to relatively rotate, keep opening to stagger at work, thereby make the opening at work can not be aligned together again.Its shortcoming is: because piston ring works in high temperature and high pressure environment, and the gas percussion that when work produces and the mechanical vibration meeting causes locating stud or pin comes off, in case locating stud or pin comes off can cause motor badly damaged, and its processing and assembling bothers relatively.
Disclose a kind of " double-deck inclined-plane piston ring " in the Chinese patent 94221414.5, this piston ring is made up of the identical trapezoidal inclined-plane trip ring of two structures.Because two trip rings are designed to trapezoidal inclined-plane.Make the aperture position of two trip rings remain on 180 ° the position of staggering, thereby eliminated the blowby phenomenon of opening.Because above-mentioned trip ring is designed to the oblique ring of certain altitude ratio, has strengthened the elastic force of ring, thereby can compensate the gap that occurs because of the back of wearing and tearing automatically.Its shortcoming is: because the junction plane of two rings is the inclined-plane, when piston ring is worked, because working pressure and mechanical vibration, can cause two environment-development looks to skew, the exact shape of such two rings are round waist type, easier when rubbing with casing wall it are rubbed into ellipticity, influence the working life of cylinder, so lose more than gain on the contrary, and the trapezoidal inclined-plane processing of its trapezoidal inclined-plane trip ring is also very difficult.
Disclose a kind of " two distortion anti-rotation complementary piston ring " among the Chinese patent 99245011.X, this piston ring is made up of a slice main ring and a slice inner loop, and main ring one side is annular oval convex shoulder, and inner loop one side is the oval interior shoulder of annular; The opening of primary and secondary ring staggers 180 °, and the recessed and boss shoulder phase ridge of two rings constitutes piston ring one.The profile ovalize of the junction plane of the shoulder of its primary and secondary ring can prevent that primary and secondary ring from relatively rotating, and keeps primary and secondary ring opening separately to stagger, and combustion gas can not flow directly into next chamber from opening like this.A kind of " bilateral oil scraping anti-rotation complementary piston ring " disclosed in the Chinese patent 00229468.0, this piston ring is had the main ring of outer shoulder and forms piston ring with a slice inner loop by a slice, piston ring excircle forms oil trap, and circle is eccentric circle in main ring shoulder and the inner loop.Take the piston ring structure of above two pieces of patents can prevent that major and minor ring from relatively rotating, have good sealing effect, can effectively improve the compression ratio of cylinder, following horsepower of equal conditions is bigger, and the life-span is longer; And because the dual frizing and the oil draining function that are similar to oil ring are played in the existence of oil trap, the function of collector ring and oil ring is better than the tradition ring in one on performance.Its shortcoming is: because above two kinds of schemes relatively rotate in order to prevent two subrings, and taked the circular bead surface profile design of combination for or ellipse or eccentric circle, two ring shoulders are variable thickness everywhere, cause the intensity of whole ring to reduce, be easy to generate distortion, in case deform then cause the sealing effect variation, reduced tightness, do not reach application target, also influenced the working life of piston ring, simultaneously the processing relative complex of above two kinds of technological schemes.
Summary of the invention
The purpose of this utility model, be the deficiency at above technological scheme, a kind of novel compound piston ring is provided, this piston ring is double seal, can prevent that two subrings from relatively rotating, tightness is good, can effectively improve the compression ratio of cylinder, saves fuel oil, machine oil, the thickness of whole ring is even simultaneously, bulk strength is higher, longer service life, and be convenient to processing.
The technological scheme that the utility model adopted is: the utility model comprises subring I and subring II, on subring I and the subring II opening is arranged all, one evagination shoulder is arranged on the subring I, the circumferential surface of evagination shoulder is concentric with the inside and outside circle of subring I, one indent shoulder is arranged on the subring II, the circumferential surface of indent shoulder is concentric with the inside and outside circle of subring II, in subring I and subring II are corresponding, the diameter of cylindrical and shoulder circumference equates respectively, so that cooperatively interact when both assemble, wherein on the indent shoulder of subring II a depression is arranged, the bump that depression matches on a profile and the subring II indent shoulder is arranged on the evagination shoulder of its subring I; Mutually during the embedding combination, the evagination shoulder of subring I embeds the indent shoulder of subring II vertically for subring I and subring II, and the bump on the evagination shoulder of subring I embeds the depression on the subring II indent shoulder, and the opening on subring I and the subring II staggers mutually.
For the intensity that makes both is suitable, the thickness of subring I and subring II preferably equates.
Preferably 90 ° of the angles that subring I and the axial embedding combined openings mutually of subring II stagger mutually.
Increase a step on the opposing end surface cylindrical of two subrings, periphery forms oil trap when making both axially make up the phase embedding, thereby has increased dual frizing and oil draining function.
Can also be at subring II or subring I; Have above radiating groove together on the jointing end face, accelerate the heat radiation of piston ring.
The beneficial effects of the utility model are: owing to adopted above technological scheme, the opening of two subrings staggers, and circular bead surface has played the effect of labyrinth seal, axially, radially double seal.Combustion gas only might be flowed out along the micro-gap between piston ring excircle face and the piston ring groove like this, but in fact owing to the working stroke time of piston is very little, combustion gas has little time to flow into next chamber from the micro-gap between piston ring excircle face and the piston ring groove, thereby air leakage significantly reduces, so the internal-combustion engine tightness is good, and can prevent to scurry oil, effectively raise the compression ratio of cylinder, make burning more abundant, both improved the horsepower of internal-combustion engine, starting can be saved fuel oil, machine oil again easily, also can reduce the pollution of tail gas to atmosphere.Circular bead surface of the present utility model in addition and inside and outside circle are concentric circle, and so the thickness homogeneous is easy processing, the piston ring bulk strength is bigger, is not easy distortion, and sealing effect is better, can prolong the working life of piston ring more than one times, prolong the overhaul life of internal-combustion engine greatly.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings:
Accompanying drawing 1～6th, the accompanying drawing of embodiment one of the present utility model
Accompanying drawing 1 is the combination schematic representation of embodiment one of the present utility model;
Accompanying drawing 2 is sectional views of Fig. 1;
Accompanying drawing 3 is plan views of subring I;
Accompanying drawing 4 is sectional views of Fig. 3;
Accompanying drawing 5 is plan views of subring II;
Accompanying drawing 6 is sectional views of Fig. 5.
In the accompanying drawing 1～6:
1 ... subring I 2 ... subring II 3 ... indent shoulder 4 ... circular-arc depression
5 ... opening 6 on the subring II ... evagination shoulder 7 ... circular-arc bump
8 ... opening 9 on the subring I ... step 10 on the subring I ... step on the subring II
11 ... oil trap
Accompanying drawing 7～12nd, the accompanying drawing of the specific embodiment of the present invention two
Accompanying drawing 7 is combination schematic representation of the specific embodiment of the present invention two;
Accompanying drawing 8 is sectional views of Fig. 7;
Accompanying drawing 9 is the plan views of subring I in the accompanying drawing 7;
Accompanying drawing 10 is sectional views of Fig. 9;
Accompanying drawing 11 is the plan views of subring II in the accompanying drawing 7;
Accompanying drawing 12 is sectional views of Figure 11.
In the accompanying drawing 7～12:
12 ... subring I 13 ... subring II 14 ... indent shoulder 15 ... circular-arc depression
16 ... opening 17 on the subring II ... evagination shoulder 18 ... circular-arc bump
19 ... opening 20 on the subring I ... radiating groove
Embodiment:
Accompanying drawing 1～6th, the accompanying drawing of the specific embodiment of the present invention one.
Compound piston ring comprises subring I1 and the subring II2 that thickness equates in the accompanying drawing, on subring I1 and the subring II2 opening is arranged all, one indent shoulder 3 is arranged on the subring II2, the circumferential surface of indent shoulder 3 is concentric with the inside and outside circle of subring II2, one recessed slightly circular-arc depression 4 is arranged on the indent shoulder 3, opening 5 on depression and the subring II2 is 90 ° of angles, one evagination shoulder 6 is arranged on the subring I1, the circumferential surface of evagination shoulder 6 is concentric with the inside and outside circle of subring I1, the depression 4 circular-arc bumps 7 that match on one profile and the subring II2 indent shoulder are arranged on the evagination shoulder 6, and the opening 8 on bump 7 and the subring I1 is 180 °; Subring I1 and subring II2 are vertically mutually during the embedding combination, the evagination shoulder 6 of subring I1 embeds the indent shoulder 3 of subring II2, circular-arc bump 7 on the evagination shoulder 6 of subring I1 embeds the circular-arc depression 4 on the subring II2 indent shoulder 3, and the opening on the two rings 5,8 staggers 90 ° mutually like this.
Simultaneously, the step 9,10 that also has big low height to equate on subring II2 opposing end faces at subring I1, when the axial embedding mutually of subring I1 and subring II2, two ring combined faces form oil trap 11 one like this.
When the piston of the such compound piston ring of assembling is worked in cylinder, opening 5 in the subring, 8 are hidden mutually, can prevent effectively that high-pressure gas from directly entering next chamber from the opening of ring, and the evagination shoulder 6 of subring I1 embeds in the indent shoulder 3 of subring II2, formed mazy sealing, combustion gas only might be flowed out along the micro-gap between piston ring excircle face and the piston ring groove like this, but in fact owing to the working stroke time of piston is very little, combustion gas has little time to flow into next chamber from the micro-gap between piston ring excircle face and the piston ring groove, thereby air leakage significantly reduces, so the internal-combustion engine tightness is good, and can prevent to scurry oil, effectively raise the compression ratio of cylinder, make burning more abundant, both improved the horsepower of internal-combustion engine, starting easily, can save fuel oil again, machine oil also can reduce the pollution of tail gas to atmosphere.
The oil trap together 11 that the step 9,10 that is equated by the big low height on subring I1 and the subring II2 opposing end faces forms when axial embedding mutually then can play frizing and oil draining function.
Fig. 7～12nd, the accompanying drawing of the specific embodiment of the present invention two.
The compound piston ring bag is scraped subring I12 and the subring II13 that thickness equates in the accompanying drawing, on subring I1 and the subring II13 opening is arranged all, one indent shoulder 14 is arranged on the subring II13, the circumferential surface of indent shoulder 14 is concentric with the inside and outside circle of subring II13,14 have a recessed slightly circular-arc depression 15 on the indent shoulder, opening 16 on depression 15 and the subring II13 is 90 ° of angles, one evagination shoulder 17 is arranged on the subring I12, the circumferential surface of evagination shoulder 17 is concentric with the inside and outside circle of subring I12, the depression 15 circular-arc bumps 18 that match on one profile and the subring II13 indent shoulder are arranged on the evagination shoulder 17, and the opening 19 on bump 18 and the subring I12 is 180 °; Subring I12 and subring II13 are vertically mutually during the embedding combination, the evagination shoulder 17 of subring I12 embeds the indent shoulder 14 of subring II13, circular-arc bump 18 on the evagination shoulder 17 of subring I12 embeds the circular-arc depression 15 on the subring II13 indent shoulder 14, and the opening on the two rings 16,19 staggers 90 ° mutually like this.
Simultaneously, on subring I12, also has twice radiating groove 20 on itself and the subring II13 opposing end faces.
When the piston of the such compound piston ring of assembling is worked in cylinder, opening 16 in the subring, 19 are hidden mutually, can prevent effectively that high-pressure gas from directly entering next chamber from the opening of ring, and the evagination shoulder 17 of subring I12 embeds in the indent shoulder 14 of subring II13, formed mazy sealing, combustion gas only might be flowed out along the micro-gap between piston ring excircle face and the piston ring groove like this, but in fact owing to the working stroke time of piston is very little, combustion gas has little time to flow into next chamber from the micro-gap between piston ring excircle face and the piston ring groove, thereby air leakage significantly reduces, so the internal-combustion engine tightness is good, and can prevent to scurry oil, effectively raise the compression ratio of cylinder, make burning more abundant, both improved the horsepower of internal-combustion engine, starting easily, can save fuel oil again, machine oil also can reduce the pollution of tail gas to atmosphere.
And on the subring I12, the radiating groove 20 on its interior edge face relative with subring II13, the heat on can the accelerating piston ring distribute speed, prolong the working life of piston ring.
More than two kinds of embodiments only be preferred embodiment of the present invention, can not limit the scope of enforcement of the present invention.The conversion of the equivalence that all foundations technical characteristics of the present invention is made all belongs to right of the present invention will show the scope of patent protection that is limited.
Claims (6)
1, a kind of combined sealed piston ring, comprise subring I and subring II, on subring I and the subring II opening is arranged all, one evagination shoulder is arranged on the subring I, the circumferential surface of evagination shoulder is concentric with the inside and outside circle of subring I, one indent shoulder is arranged on the subring II, the circumferential surface of indent shoulder is concentric with the inside and outside circle of subring II, subring I equates respectively with the diameter of corresponding inside and outside circle of subring II and shoulder circumference, it is characterized in that: on the indent shoulder of its subring II a depression is arranged, the bump that depression matches on a profile and the subring II indent shoulder is arranged on the evagination shoulder of its subring I; Mutually during the embedding combination, the evagination shoulder of subring I embeds the indent shoulder of subring II vertically for subring I and subring II, and the bump on the evagination shoulder of subring I embeds the depression on the subring II indent shoulder, and the opening on subring I and the subring II staggers mutually.
2, combined sealed piston ring according to claim 1 is characterized in that: its subring I equates with subring II thickness.
3, combined sealed piston ring according to claim 1, it is characterized in that: a step is respectively arranged on the opposing end surface cylindrical of subring I and subring II, when the axial embedding mutually of subring I and subring II, these two steps constitute oil trap on the periphery of described combined sealed piston ring.
4, combined sealed piston ring according to claim 1 is characterized in that: the angle that opening staggers during the axial embedding mutually of its subring I and subring II is 90 °.
5, according to the described combined sealed piston ring of the arbitrary claim of claim 1 to 4, it is characterized in that: the profile that caves on its subring II indent shoulder is one section circular arc.
6, according to the described combined sealed piston ring of the arbitrary claim of claim 1 to 4, it is characterized in that: have above radiating groove together on the jointing end face of its subring II or subring I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03273426 CN2672305Y (en) | 2003-08-14 | 2003-08-14 | Combined seal piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03273426 CN2672305Y (en) | 2003-08-14 | 2003-08-14 | Combined seal piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2672305Y true CN2672305Y (en) | 2005-01-19 |
Family
ID=34473641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03273426 Expired - Fee Related CN2672305Y (en) | 2003-08-14 | 2003-08-14 | Combined seal piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2672305Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118132A (en) * | 2019-06-03 | 2019-08-13 | 天津大学 | Combined sealing piston ring, piston assembly, internal combustion engine and encapsulating method |
-
2003
- 2003-08-14 CN CN 03273426 patent/CN2672305Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118132A (en) * | 2019-06-03 | 2019-08-13 | 天津大学 | Combined sealing piston ring, piston assembly, internal combustion engine and encapsulating method |
| CN110118132B (en) * | 2019-06-03 | 2024-02-09 | 天津大学 | Sealing combined piston ring, piston assembly, internal combustion engine and sealing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |