CN109488764A - A kind of piston ring suitable for High Pressure Difference - Google Patents
A kind of piston ring suitable for High Pressure Difference Download PDFInfo
- Publication number
- CN109488764A CN109488764A CN201811588852.1A CN201811588852A CN109488764A CN 109488764 A CN109488764 A CN 109488764A CN 201811588852 A CN201811588852 A CN 201811588852A CN 109488764 A CN109488764 A CN 109488764A
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- CN
- China
- Prior art keywords
- ring
- pressure difference
- basic
- piston
- basic ring
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 8
- 238000007747 plating Methods 0.000 description 8
- 238000005507 spraying Methods 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 206010000060 Abdominal distension Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Compressor (AREA)
Abstract
The present invention 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.Present invention reduces the pressure differences of piston ring inner circle and outer circle, under the premise of guaranteeing sealing, effectively extend the service life of piston ring 30%~40%.
Description
Technical field
The present invention 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.
Summary of the invention
Based on problem above, the present invention provides a kind of piston rings suitable for High Pressure Difference.Present invention reduces piston rings
The pressure difference of inner circle and outer circle effectively extends the service life of piston ring 30%~40% under the premise of guaranteeing sealing.
In order to solve the above technical problems, The technical solution adopted by the invention 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, 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 can be the through-hole of round hole, square hole or bending, can also be 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 beneficial effects of the present invention are:
(1) present invention reduces the pressure differences of piston ring inner circle and outer circle, under the premise of guaranteeing sealing, effectively extend and live
The service life of plug ring 30%~40%；
(2) basic ring outer circle anchor ring of the present invention offers at least one of annular groove, and relief hole is through to outer from basic ring inner circle anchor ring
On the annular groove inner bottom surface of ring disc.Annular groove can be full-circle spray pattern, or intermittent multiple arcs, annular groove cross-sectional form can
Think circle, rectangle, trapezoidal or wedge-shaped etc., annular groove can be provided among outer ring disc, can also be provided with outer ring disc side
At edge.From in the annular groove that relief hole enters outer ring disc, outer ring disc is uniformly distributed towards inner circle the pressure of basic ring inner circle anchor ring
The pressure of 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) annular groove of the present invention 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, and the sealing surface of a piston area is divided into
Second level is conducive to improve sealing performance, while whole stress condition when improving basic ring pressure-bearing.
Detailed description of the invention
Fig. 1 is piston ring scheme of installation.
Fig. 2 is front view of the invention.
Fig. 3 is left view of the invention.
Wherein, 1 basic ring, 101 annular grooves, 102 relief holes, 103 contact ring banks.
Specific embodiment
The present invention will be further described below with reference to the drawings.Embodiments of the present invention include but is not limited to following reality
Apply 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 embodiment of the present invention.Design parameter in above-described embodiment and embodiment is merely to understand table
State the invention verification process of inventor, the scope of patent protection being not intended to limit the invention, scope of patent protection of the invention
Still it is subject to the claims, it is all to change with equivalent structure made by specification and accompanying drawing content of the invention, together
Reason should be included within the scope of the present invention.
Claims (5)
1. a kind of piston ring suitable for High Pressure Difference, the basic ring (1) including circular ring shape, it is characterised in that: basic ring (1) inner circle
Anchor ring runs through to outer ring disc is communicated with multiple relief holes (102) for reducing basic ring (1) inner circle and outer circle pressure 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, basic ring (1) outer circle anchor ring is separated by the sliding slot
Two contacts ring bank (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 |
|---|---|---|---|
| CN201811588852.1A CN109488764A (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 |
|---|---|---|---|
| CN201811588852.1A CN109488764A (en) | 2018-12-25 | 2018-12-25 | A kind of piston ring suitable for High Pressure Difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109488764A true CN109488764A (en) | 2019-03-19 |
Family
ID=65711662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811588852.1A Pending CN109488764A (en) | 2018-12-25 | 2018-12-25 | A kind of piston ring suitable for High Pressure Difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488764A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201359080Y (en) * | 2009-03-11 | 2009-12-09 | 北京复盛机械有限公司 | Piston ring |
| CN204344408U (en) * | 2014-11-25 | 2015-05-20 | 上海烟草集团有限责任公司 | For the piston assembly of compressor |
| CN209430756U (en) * | 2018-12-25 | 2019-09-24 | 四川大川压缩机有限责任公司 | A kind of piston ring suitable for High Pressure Difference |
-
2018
- 2018-12-25 CN CN201811588852.1A patent/CN109488764A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201359080Y (en) * | 2009-03-11 | 2009-12-09 | 北京复盛机械有限公司 | Piston ring |
| CN204344408U (en) * | 2014-11-25 | 2015-05-20 | 上海烟草集团有限责任公司 | For the piston assembly of compressor |
| CN209430756U (en) * | 2018-12-25 | 2019-09-24 | 四川大川压缩机有限责任公司 | A kind of piston ring suitable for High Pressure Difference |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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