CN203655564U - Combined piston ring of compressor - Google Patents
Combined piston ring of compressor Download PDFInfo
- Publication number
- CN203655564U CN203655564U CN201320830338.0U CN201320830338U CN203655564U CN 203655564 U CN203655564 U CN 203655564U CN 201320830338 U CN201320830338 U CN 201320830338U CN 203655564 U CN203655564 U CN 203655564U
- Authority
- CN
- China
- Prior art keywords
- piston ring
- ring
- interior
- outer rim
- main piston
- 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
A combined piston ring of a compressor comprises a main piston ring and an inner secondary piston ring which are combined for use and have the same height, the main piston ring and the inner secondary piston ring are respectively provided with a notch, and the two notches are arranged in a staggered mode. A U-shaped unloading groove is formed in the outer cylindrical surface of the main piston ring, the height of the outer ring side of the main piston ring is twice that of the inner ring side of the main piston ring, the height of the inner ring side of the inner secondary piston ring is twice that of the outer ring side of the inner secondary piston ring, and the outer ring side and the inner ring side of the main piston ring and the outer ring side and the inner ring side of the inner secondary piston ring have the same thickness equal to the distance between each outer ring side and the corresponding inner ring side. According to the combined piston ring of the compressor, gaps of the notches can be effectively plugged, and airtightness of the piston ring is improved.
Description
Technical field
The utility model relates to Compressor Technology field, is specifically related to the piston ring structure in a kind of compressor.
Background technique
In reciprocal compressor, piston ring is installed on piston conventionally, come the gap between packed-piston and cylinder minute surface by piston ring, mainly play seal action.The problem of two aspects that existing piston ring mainly exists rapid wear, sealing is not good enough.
About the rapid wear problem of piston ring, be by the improper decision of selection of piston ring to a certain extent, the metallic material to same to mill, different media is for the filled polytetrafluoroethylene ring of same formula, its wear factor difference; For same medium, the different filled polytetrafluoroethylene rings to same formula to mill metallic material, wear factor is also different.
About the sealing problem of piston ring, the outer rim that wants piston ring fits tightly cylinder minute surface, and piston ring must obtain certain effective elastic force, thereby makes piston ring must be shaped with otch; If piston ring does not have otch, it just can not obtain just elastic force, and piston ring is not necessarily pasting cylinder minute surface, just the gas of high pressure may be revealed from the gap between piston ring and cylinder when compressor compresses gas.And the piston ring that is provided with otch is in the time of normal work, because piston ring exists otch, in long-term using process, the gap of piston ring incision can be increasing, and then can affect the sealing of compressor.
Summary of the invention
The purpose of this utility model is to provide a kind of Combined compressor piston ring.
For achieving the above object, the technical solution of the utility model is:
A kind of Combined compressor piston ring, comprise and being used in combination and contour main piston ring and interior sub-piston ring, on main piston ring and interior sub-piston ring, all offer otch, the setting of mutually staggering of two otch, it is characterized in that: the external cylindrical surface of main piston ring offers " U " type compensating groove, the outer rim side height value of main piston ring is 2 times of interior ring side height value, the outer rim side height value of interior sub-piston ring is 1/2 of interior ring side height value, and the outer rim side of main piston ring and interior sub-piston ring, the one-tenth-value thickness 1/10 of interior ring side are all identical and equal the distance value between outer rim side and interior ring side.
Further, main piston ring and interior sub-piston ring comprise the body of being made up of teflon and are filled in intrinsic polyether-ether-ketone.
The beneficial effects of the utility model are:
1, piston ring comprises contour main piston ring and interior sub-piston ring, the interior ring side of main piston ring snaps in the groove between outer rim side and the interior ring side of interior sub-piston ring, the outer rim side of interior sub-piston ring snaps in the groove between outer rim side and the interior ring side of main piston ring, the both ends of the surface up and down of combination rear master piston ring and interior sub-piston ring are concordant, can mutually effectively carry out shutoff to the gap of its otch, improve the sealing of piston ring, the external cylindrical surface of main piston ring offers " U " type compensating groove, can effectively unload the pressure that piston ring is subject to, reduce to increase because of pressure the wearing and tearing that piston ring is caused, extend its working life.
2, the body of main piston ring and interior sub-piston ring is made up of teflon, and in body, be filled with polyether-ether-ketone, the resistant to elevated temperatures temperature range of teflon body is 250～300 DEG C, its friction factor≤0.20, the features such as polyether-ether-ketone has that mechanical strength is high, high temperature resistant, shock-resistant, fire-retardant, acid resistant alkali, wear-resisting, endurance, both are in conjunction with can effectively having reduced the friction factor of piston ring, the resistance to high temperature that has improved piston ring, wear-resisting property.
Brief description of the drawings
Fig. 1 is the structural representation of main piston ring and interior sub-piston ring in the utility model;
Fig. 2 is the combination schematic diagram of main piston ring and interior sub-piston ring in the utility model;
Fig. 3 is stereogram of the present utility model;
Wherein reference character is the interior ring side of outer rim side, the 22-interior sub-piston ring of interior ring side, the 21-interior sub-piston ring of outer rim side, 12-main piston ring of 1-main piston ring, 2-interior sub-piston ring, 3-otch, 4-" U " type compensating groove, 11-main piston ring.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
Embodiment one
As shown in Figure 1, a kind of Combined compressor piston ring, comprises main piston ring 1 and interior sub-piston ring 2.The height value of main piston ring 1 and interior sub-piston ring 2 equates, includes the body of being made up of polytetrafluoroethylmaterial material and is filled in intrinsic polyether-ether-ketone.Main piston ring 1 and interior sub-piston ring 2 are provided with the setting of mutually staggering of 3, two otch 3 of otch.The intermediate portion of main piston ring 1 upper-end surface caves inward into a groove, form the main piston ring 1 with outer rim side 11 and interior ring side 12, wherein outer rim side 11 height values of main piston ring 1 are 2 times of interior ring side 12 height values, distance value between interior ring side 12 height values and outer rim side 11, interior ring side 12 equates, also equate with the one-tenth-value thickness 1/10 of the ring of main piston ring 1 groove, make the ratio of the one-tenth-value thickness 1/10 of the ring between distance values and outer rim side and the interior ring side of height value, outer rim side and interior ring side of the height value of the outer rim side on main piston ring 1, interior ring side be: 2:1:1:1.The intermediate portion of interior sub-piston ring 2 upper-end surfaces caves inward into a groove, form the interior sub-piston ring 2 with outer rim side 21 and interior ring side 22, wherein outer rim side 21 height values of interior sub-piston ring 2 are 1/2 of interior ring side 22 height values, interior ring side 22 height values and outer rim side 21, distance value between interior ring side 22 equates, also equate with the one-tenth-value thickness 1/10 of the ring of interior sub-piston ring 2 grooves, make the height value of the outer rim side on interior sub-piston ring 2, the height value of interior ring side, the ratio of the one-tenth-value thickness 1/10 of the ring between the distance values of outer rim side and interior ring side and outer rim side and interior ring side is: 1:2:1:1.The external cylindrical surface of main piston ring 1 offers " U " type compensating groove 4.
Piston ring forms by being used in combination also contour main piston ring and interior sub-piston ring, and due to the relation between the one-tenth-value thickness 1/10 of the ring between distance values and outer rim side and the interior ring side of outer rim side height value, interior ring side height value, outer rim side and interior ring side, after main piston ring and interior sub-piston ring are installed, both both ends of the surface are all concordant, thereby can mutually effectively carry out shutoff to the gap of its incision, improve the sealing of piston ring; The body of main piston ring and interior sub-piston ring is made by polytetrafluoroethylmaterial material, and is filled with polyether-ether-ketone in body, thereby can effectively reduce the friction factor of piston ring, the resistance to high temperature that has improved piston ring, wear-resisting property; In addition, offer " U " type compensating groove at the external cylindrical surface of main piston ring, when operative scenario, can effectively unload its pressure, reduce the wearing and tearing that the variation of pressure causes piston ring, extend the working life of piston ring.
Embodiment two
Main piston ring 1 in embodiment one and interior sub-piston ring 2 are in the time assembling, the interior ring side 12 of main piston ring 1 snaps in the groove between outer rim side 21, the interior ring side 22 of interior sub-piston ring 2, and the outer rim side 21 of interior sub-piston ring 2 snaps in the groove between the outer rim side 11 of main piston ring 1, interior ring side 12.Due to the height value of the outer rim side 11 on main piston ring 1, the height value of interior ring side 12, the ratio of the one-tenth-value thickness 1/10 of the groove ring between the distance values of outer rim side 11 and interior ring side 12 and outer rim side 11 and interior ring side 12 is: 2:1:1:1, the height value of the outer rim side on interior sub-piston ring 2, the height value of interior ring side, the ratio of the one-tenth-value thickness 1/10 of the ring between the distance values of outer rim side and interior ring side and outer rim side and interior ring side is: 1:2:1:1, make after main piston ring 1 and interior sub-piston ring 2 install, main piston ring 1 is all concordant with the both ends of the surface of interior sub-piston ring 2, thereby can mutually effectively carry out shutoff to the gap of its incision, improve the sealing of piston ring.
Claims (2)
1. a Combined compressor piston ring, comprise and being used in combination and contour main piston ring and interior sub-piston ring, on main piston ring and interior sub-piston ring, all offer otch, the setting of mutually staggering of two otch, it is characterized in that: the external cylindrical surface of main piston ring offers " U " type compensating groove, the outer rim side height value of main piston ring is 2 times of interior ring side height value, the outer rim side height value of interior sub-piston ring is 1/2 of interior ring side height value, and the outer rim side of main piston ring and interior sub-piston ring, the one-tenth-value thickness 1/10 of interior ring side are all identical and equal the distance value between outer rim side and interior ring side.
2. Combined compressor piston ring as claimed in claim 1, is characterized in that: main piston ring and interior sub-piston ring comprise the body of being made up of teflon and be filled in intrinsic polyether-ether-ketone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320830338.0U CN203655564U (en) | 2013-12-17 | 2013-12-17 | Combined piston ring of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320830338.0U CN203655564U (en) | 2013-12-17 | 2013-12-17 | Combined piston ring of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655564U true CN203655564U (en) | 2014-06-18 |
Family
ID=50921958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320830338.0U Expired - Fee Related CN203655564U (en) | 2013-12-17 | 2013-12-17 | Combined piston ring of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655564U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696941A (en) * | 2013-12-17 | 2014-04-02 | 成都展望能源机械有限公司 | Combined compressor piston ring |
-
2013
- 2013-12-17 CN CN201320830338.0U patent/CN203655564U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696941A (en) * | 2013-12-17 | 2014-04-02 | 成都展望能源机械有限公司 | Combined compressor piston ring |
| CN103696941B (en) * | 2013-12-17 | 2016-03-02 | 成都展望能源机械有限公司 | combined compressor piston ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20141217 |
|
| EXPY | Termination of patent right or utility model |