CN209430756U - A kind of piston ring suitable for High Pressure Difference - Google Patents
A kind of piston ring suitable for High Pressure Difference Download PDFInfo
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- CN209430756U CN209430756U CN201822184015.4U CN201822184015U CN209430756U CN 209430756 U CN209430756 U CN 209430756U CN 201822184015 U CN201822184015 U CN 201822184015U CN 209430756 U CN209430756 U CN 209430756U
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- ring
- pressure difference
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- piston
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Abstract
The utility model relates to compressor field, specifically a kind of piston ring suitable for High Pressure Difference, the basic ring including circular ring shape, basic ring interior annular runs through towards outer ring disc is communicated with multiple relief holes for reducing basic ring inner circle and outer circle pressure difference.The utility model reduces the pressure difference of piston ring inner circle and outer circle, under the premise of guaranteeing sealing, effectively extends the service life of piston ring 30%~40%.
Description
Technical field
The utility model relates to compressor field, in particular to a kind of piston rings suitable for High Pressure Difference.
Background technique
Piston ring is a kind of part in gap between sealing cylinder mirror surface and piston, to its basic requirement be leakproofness and
Wearability has opening on piston ring, and referring to Fig. 1 piston ring scheme of installation, in a free state, piston ring diameter is greater than cylinder
Diameter after installing piston into cylinder, due to the elasticity of piston ring material, generates the precompression to cylinder mirror surface, compressor is working
When, piston ring is pushed to the lower side of pressure, seals gas along ring under the effect of the pressure difference of its preceding pressure and rear pressure
The leakage of slot end face, pressure of the abdominal distension on piston ring inner circle are approximately pressure before ring, this pressure, which is greater than, to be acted on outside piston ring
Average pressure on circle forms pressure difference, ring is pressed to cylinder mirror surface, prevents leakage of the gas along cylinder wall surface.Cylinder from
When first of high-pressure side ring leaks into last one of ring step by step, the pressure difference that every one of ring is born differs greatly, first of ring
Main pressure difference, and increasing with revolution are born, the foundation of back pressure, pressure difference also increases, and second ring is opposite
The pressure difference of first of ring will be much smaller, and later each ring reduces step by step, causes each road ring abrasion uneven, excessively high pressure difference is made
At piston ring serious wear, and increase the abrasion of cylinder.How above-mentioned technical problem is solved, at exerting for those skilled in the art
Power direction.
Utility model content
Based on problem above, the utility model provides a kind of piston ring suitable for High Pressure Difference.The utility model reduces
The pressure difference of piston ring inner circle and outer circle effectively extends the use of piston ring 30%~40% under the premise of guaranteeing sealing
Service life.
In order to solve the above technical problems, the technical solution adopted in the utility model is as follows:
A kind of piston ring suitable for High Pressure Difference, the basic ring including circular ring shape, basic ring interior annular run through towards outer ring disc
It is communicated with multiple relief holes for reducing basic ring inner circle and outer circle pressure difference.
In the present invention, the basic ring of circular ring shape is the prior art, and the form of section can be circle, rectangle, ladder
Shape or wedge shape etc., periphery shape can be able to be such as cylinder, bucket face, asymmetric bucket face or the conical surface etc., seamed edge shape
The shapes such as inner chamfer, inscribe platform, outer edge chamfering, can be containing crossing side structure, and crossing side structure can be for without crossing or coating, spray
It applies such as full spraying, partly inlays spraying, inlays spraying, plating such as circle plating partly inlays plating, inlays plating, nitridation such as full surface
Nitridation, certain surface nitridation.Relief hole can be round hole, square hole or bending through-hole, can also such as a flute profile, as long as
Interior connection basic ring interior annular is towards outer ring disc.
Piston ring work pressure-bearing situation: compressor at work, pressed by piston ring inner circle anchor ring and on high-tension side end face
Power, piston ring are pushed to the lower side of pressure under the effect of the pressure difference of its preceding pressure and rear pressure, seal piston rod peace
Piston ring gas is filled along the leakage of annular groove low pressure side end face, the on high-tension side pressure on piston ring inner circle by piston ring abdominal distension,
Basic ring ring is pressed into cylinder mirror surface, prevents leakage of the gas along cylinder wall surface, and the relief hole opened up on basic ring is connected with basic ring
Inner circle and outer circle reduce the pressure difference of basic ring inner headed face and periphery, and then reduce the abrasion of basic ring.In general, on basic ring
The relief hole opened up is more, and the pressure difference of basic ring inner headed face and periphery is smaller, and every grade of piston ring pressure difference slows down on piston rod
Trend more flattens out, therefore pressure release hole number is more, and piston ring scuffing is smaller, and the series of plunger stem flange ring is more, due to piston
Ring generally bears higher differential pressure and is that piston rod is gone forward two-stage piston ring, thus it is general on the piston rod before two-stage piston ring open up
Relief hole.
As a preferred mode, basic ring outer circle anchor ring offers at least one of annular groove, and relief hole is from basic ring interior annular
Face is through on the annular groove inner bottom surface of outer ring disc.
As a preferred mode, annular groove it is concentric with basic ring and it is annular in shape be provided on basic ring outer circle anchor ring, sliding slot
Basic ring outer circle anchor ring is separated into two contact ring banks.
As a preferred mode, pressure release hole number is six, is evenly distributed on basic ring.
As a preferred mode, the material of basic ring is carbon fibre reinforced composite.
Compared with prior art, the utility model has the beneficial effects that
(1) the utility model reduces the pressure difference of piston ring inner circle and outer circle, under the premise of guaranteeing sealing, effectively prolongs
The service life of long piston ring 30%~40%；
(2) the utility model basic ring outer circle anchor ring offers at least one of annular groove, and relief hole runs through from basic ring inner circle anchor ring
To the annular groove inner bottom surface of outer ring disc.Annular groove can be full-circle spray pattern, or intermittent multiple arcs, annular groove cross section shape
Formula can be circle, rectangle, trapezoidal or wedge-shaped etc., and annular groove can be provided among outer ring disc, can also be provided with outer ring and be justified
Face edge.For the pressure of basic ring inner circle anchor ring from the annular groove that relief hole enters outer ring disc, outer ring disc is uniformly distributed direction
The pressure of inner circle anchor ring, basic ring inner circle anchor ring and the pressure difference in each segmental arc of outer circle anchor ring are more balanced；
(3) the utility model annular groove it is concentric with basic ring and it is annular in shape be provided on basic ring outer circle anchor ring, sliding slot is by basic ring
Outer circle anchor ring is separated into two contact ring banks.Two contact ring banks squeeze cylinder mirror surface and are sealed, by the sealing surface of a piston area
It is divided into second level, whole stress condition when being conducive to improve sealing performance, while improving basic ring pressure-bearing.
Detailed description of the invention
Fig. 1 is piston ring scheme of installation.
Fig. 2 is the front view of the utility model.
Fig. 3 is the left view of the utility model.
Wherein, 1 basic ring, 101 annular grooves, 102 relief holes, 103 contact ring banks.
Specific embodiment
The utility model will be further described below with reference to the accompanying drawings.The embodiments of the present invention includes but unlimited
In the following example.
Embodiment 1:
Referring to fig. 2~3, a kind of piston ring suitable for High Pressure Difference, the basic ring 1 including circular ring shape, 1 interior annular of basic ring towards
Outer ring disc, which runs through, is communicated with multiple relief holes 102 for reducing 1 inner circle of basic ring and outer circle pressure difference.
In this example, the basic ring 1 of circular ring shape is the prior art, the form of section can for circle, rectangle, it is trapezoidal or
Wedge shape etc., periphery shape can be able to be to fall as in for cylinder, bucket face, asymmetric bucket face or the conical surface etc., seamed edge shape
The shapes such as angle, inscribe platform, outer edge chamfering, can be containing crossing side structure, and crossing side structure can be for without cross or coating, spraying be such as
Full spraying partly inlays spraying, inlays spraying, and plating such as circle plating partly inlays plating, inlays plating, nitrogenize such as entirely it is surfaces nitrided,
Certain surface nitridation.Relief hole 102 can be the through-hole of round hole, square hole or bending, can also be such as a flute profile, as long as interior
1 interior annular of connection basic ring is towards outer ring disc.102 quantity of relief hole can be six, be evenly distributed on basic ring 1.Base
The material of ring 1 is using conventional piston ring material, and the present embodiment is using carbon fibre reinforced composite.
Piston ring work pressure-bearing situation: compressor at work, pressed by piston ring inner circle anchor ring and on high-tension side end face
Power, piston ring are pushed to the lower side of pressure under the effect of the pressure difference of its preceding pressure and rear pressure, seal piston rod peace
Piston ring gas is filled along the leakage of 101 low pressure side end face of annular groove, the on high-tension side pressure on piston ring inner circle is by piston ring abdomen
It is swollen, 1 ring of basic ring is pressed into cylinder mirror surface, prevents leakage of the gas along cylinder wall surface, and the relief hole 102 opened up on basic ring 1
It is connected with 1 inner circle of basic ring and outer circle, reduces the pressure difference of basic ring 1 inner headed face and periphery, and then reduce the abrasion of basic ring 1.Generally
For, the pressure difference of the relief hole more than 102 opened up on basic ring 1,1 inner headed face of basic ring and periphery is smaller, every grade on piston rod
Piston ring pressure difference sluggish trend more flattens out, therefore 102 quantity of relief hole is more, and piston ring scuffing is smaller, plunger stem flange ring
Series it is more, be that piston rod is gone forward two-stage piston ring since piston ring generally bears higher differential pressure, generally in piston
Bar two-stage piston ring of going forward opens up relief hole 102.
Embodiment 2:
The present embodiment is the further improvement for a upper embodiment.
Referring to fig. 2~3, a kind of piston ring suitable for High Pressure Difference, the basic ring 1 including circular ring shape, 1 interior annular of basic ring towards
Outer ring disc, which runs through, is communicated with multiple relief holes 102 for reducing 1 inner circle of basic ring and outer circle pressure difference.
1 outer circle anchor ring of basic ring offers at least one of annular groove 101, and relief hole 102 is through to outer ring from 1 inner circle anchor ring of basic ring
On 101 inner bottom surface of annular groove of disc.Annular groove 101 can be full-circle spray pattern, or intermittent multiple arcs, annular groove 101 are transversal
Face form can be circle, rectangle, trapezoidal or wedge-shaped etc., and annular groove 101 can be provided among outer ring disc, can also be provided with
Outer ring disc edge.The pressure of 1 inner circle anchor ring of basic ring is from the annular groove 101 that relief hole 102 enters outer ring disc, outer ring disc
It is uniformly distributed the pressure towards inner circle anchor ring, 1 inner circle anchor ring of basic ring and the pressure difference in each segmental arc of outer circle anchor ring are more balanced.
Annular groove 101 it is concentric with basic ring 1 and it is annular in shape be provided on 1 outer circle anchor ring of basic ring, sliding slot is by 1 outer circle anchor ring of basic ring
It is separated into two contact ring banks 103.Two contact ring banks 103 squeeze cylinder mirror surface and are sealed, by the sealing surface of a piston area point
Whole stress condition when at second level, being conducive to improve sealing performance, while improving 1 pressure-bearing of basic ring.
The other parts of the present embodiment are same as the previously described embodiments, just repeat no more here.
It as above is the embodiments of the present invention.Design parameter in above-described embodiment and embodiment is merely to clear
The utility model verification process of utility model people is stated by Chu, not to limit the scope of patent protection of the utility model, this reality
It is still subject to the claims with novel scope of patent protection, in all specifications and attached drawing with the utility model
The variation of equivalent structure made by holding, similarly should be included in the protection scope of the utility model.
Claims (5)
1. a kind of piston ring suitable for High Pressure Difference, including be provided only with an opening for installation circular ring shape basic ring (1), feature
Be: basic ring (1) interior annular is multiple for reducing basic ring (1) inner circle and outer circle pressure through being communicated with towards outer ring disc
The relief hole (102) of difference.
2. a kind of piston ring suitable for High Pressure Difference according to claim 1, it is characterised in that: basic ring (1) outer circle
Anchor ring offers at least one of annular groove (101), and the relief hole (102) is through to outer ring disc from basic ring (1) inner circle anchor ring
On annular groove (101) inner bottom surface.
3. a kind of piston ring suitable for High Pressure Difference according to claim 2, it is characterised in that: the annular groove (101) with
Basic ring (1) it is concentric and it is annular in shape be provided on basic ring (1) outer circle anchor ring, the annular groove (101) is by basic ring (1) outer circle anchor ring point
It is divided into two contact ring banks (103).
4. described in any item a kind of piston rings suitable for High Pressure Difference according to claim 1~3, it is characterised in that: described to let out
Pressing hole (102) quantity is six, is evenly distributed on basic ring (1).
5. described in any item a kind of piston rings suitable for High Pressure Difference according to claim 1~3, it is characterised in that: the base
The material of ring (1) is carbon fibre reinforced composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822184015.4U CN209430756U (en) | 2018-12-25 | 2018-12-25 | A kind of piston ring suitable for High Pressure Difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822184015.4U CN209430756U (en) | 2018-12-25 | 2018-12-25 | A kind of piston ring suitable for High Pressure Difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209430756U true CN209430756U (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822184015.4U Active CN209430756U (en) | 2018-12-25 | 2018-12-25 | A kind of piston ring suitable for High Pressure Difference |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488764A (en) * | 2018-12-25 | 2019-03-19 | 四川大川压缩机有限责任公司 | A kind of piston ring suitable for High Pressure Difference |
| CN112377614A (en) * | 2020-11-11 | 2021-02-19 | 马勒汽车技术（中国）有限公司 | Piston ring for engine and machining method of piston ring |
-
2018
- 2018-12-25 CN CN201822184015.4U patent/CN209430756U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488764A (en) * | 2018-12-25 | 2019-03-19 | 四川大川压缩机有限责任公司 | A kind of piston ring suitable for High Pressure Difference |
| CN112377614A (en) * | 2020-11-11 | 2021-02-19 | 马勒汽车技术（中国）有限公司 | Piston ring for engine and machining method of piston ring |
| CN112377614B (en) * | 2020-11-11 | 2023-02-24 | 马勒汽车技术（中国）有限公司 | Piston ring for engine and machining method of piston ring |
| US11788622B2 (en) | 2020-11-11 | 2023-10-17 | Mahle Automotive Technologies (China) Co., Ltd. | Piston ring for engine and machining method of piston ring |
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