CN202108692U - Oil-free lubricating compressor piston assembly - Google Patents
Oil-free lubricating compressor piston assembly Download PDFInfo
- Publication number
- CN202108692U CN202108692U CN201120222166XU CN201120222166U CN202108692U CN 202108692 U CN202108692 U CN 202108692U CN 201120222166X U CN201120222166X U CN 201120222166XU CN 201120222166 U CN201120222166 U CN 201120222166U CN 202108692 U CN202108692 U CN 202108692U
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- piston
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- oil
- composite material
- piston assembly
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to an oil-free lubricating compressor piston assembly. The oil-free lubricating compressor piston assembly comprises a piston body; a supporting ring is arranged on the piston body; a plurality of piston ring grooves are arranged on the piston body; and two piston rings are mounted in each piston ring groove. The supporting ring and the piston rings are made from a polyether-ether-ketone composite material or a polyimide composite material. According to the oil-free lubricating compressor piston assembly provided by the utility model, the supporting ring and the piston rings are made from the polyether-ether-ketone composite material or the polyimide composite material, so that the service life of the piston rings and the supporting ring is prolonged and can be prolonged to over three times of that of a piston ring which is made by the filling of polytetrafluoroethylene, and the piston rings and the supporting ring can be used for over 8,000 hours in a carbon dioxide compressor under the sealing pressure difference of 16.0 MPa and the working temperature of 130 DEG C.
Description
Technical field
The utility model relates to a kind of non-lubricated compressor piston assembly, and piston assembly is suitable for the oilless reciprocating compressor of all gases medium, is particularly suitable for high temperature, high sealing pressure reduction, does not have oily working environment.
Background technique
At present; The piston ring of domestic non-lubricated compressor and support ring generally adopt teflon, promptly are main body with the teflon, filling carbon fiber, graphite, molybdenum disulfide, copper powder etc.; Through compression moulding, be reprocessed into integrated type or open type piston ring, support ring.This piston ring, support ring are because the lower (tensile strength≤50MPa) of intensity; Temperature tolerance not high (general serviceability temperature≤160 ℃, seal pressure differential can suitably improve when low) is generally in operating temperature≤160 ℃; Using effect is more satisfactory under seal pressure differential≤6.0MPa situation; Be easy to generate cold flow if operating temperature or seal pressure differential improve again, cause the wearing and tearing of piston ring and support ring to be accelerated, shortened working life.
Summary of the invention
The purpose of the utility model is that a kind of non-lubricated compressor piston assembly that is suitable for high temperature, high sealing pressure reduction, does not have the working environment of oil will be provided.
The purpose of the utility model is achieved in that a kind of non-lubricated compressor piston assembly, comprises piston body, establishes support ring on the piston body, and piston body is provided with a plurality of piston ring grooves, and two piston rings are installed in each piston ring groove.Described support ring and piston ring adopt polyether-ether-ketone composite material or composite polyimide material to process.
The non-lubricated compressor piston assembly that the utility model provides; It is main body (weight percentage 50-90%) that support ring and piston ring adopt polyether-ether-ketone (PEEK) or the TPI (TPI) that intensity is higher, resistance to high temperature is better, self lubricity is strong, friction factor is low, thermal conductivity is bigger, adds the preferred material of the composite material of teflon, graphite fiber, graphite, molybdenum disulfide, copper powder, Stainless Steel Powder as piston ring and support ring again.
It below is the mechanical property contrast table of filled polytetrafluoroethylene, polyether-ether-ketone composite material and composite polyimide material.
Can find out by last table; Polyether-ether-ketone composite material and composite polyimide material are better than filled polytetrafluoroethylene on intensity and serviceability temperature; And linear expansion coeffcient is very low; Therefore be applied to high temperature, the High Pressure Difference sealing is more satisfactory, can effectively avoid piston ring that cold flow at high temperature takes place because of intensity is low, raising piston ring and support ring working life.
After the utility model adopts such scheme; Piston ring and support ring working life have been prolonged greatly; Use the piston ring of filled polytetrafluoroethylene can prolong more than three times,, can use more than 8000 hours in the carbon-dioxide gas compressor that operating temperature is 130 ℃ at seal pressure differential 16.0 MPa.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the structural representation of the utility model.
Embodiment
As shown in Figure 1, a kind of non-lubricated compressor piston assembly comprises piston body 3, establishes support ring 1 on the piston body 3, and piston body 3 is provided with a plurality of piston ring grooves 4, and two piston rings 2 are installed in each piston ring groove 4.It is main body that described support ring 1 adopts bigger polyether-ether-ketone (PEEK) or the TPI (TPI) of thermal conductivity with piston ring 2; Polyether-ether-ketone (PEEK) or TPI (TPI) account for weight percentages of components 50-90%, and surplus is that the mixture of teflon, graphite fiber, graphite, molybdenum disulfide, copper powder and Stainless Steel Powder is processed.
The piston body assembly that adopts the utility model to provide; Before formally putting into operation; Let piston ring 2 and cylinder block under the situation of a small amount of oiling, carry out the light load break-in earlier, to avoid causing more greatly the wearing and tearing in advance of piston ring 2, support ring 1, running-in time 5-100 hour because of new cylinder bore surface roughness.
Claims (2)
1. non-lubricated compressor piston assembly; Comprise piston body (3); It is characterized in that: establish support ring (1) on the piston body (3), piston body (3) is provided with a plurality of piston ring grooves (4), and two piston rings (2) are installed in each piston ring groove (4).
2. non-lubricated compressor piston assembly according to claim 1 is characterized in that: described support ring (1) and piston ring (2) adopt polyether-ether-ketone (PEEK) composite material or polyimide (PI) composite material to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222166XU CN202108692U (en) | 2011-06-28 | 2011-06-28 | Oil-free lubricating compressor piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120222166XU CN202108692U (en) | 2011-06-28 | 2011-06-28 | Oil-free lubricating compressor piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202108692U true CN202108692U (en) | 2012-01-11 |
Family
ID=45434129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120222166XU Expired - Fee Related CN202108692U (en) | 2011-06-28 | 2011-06-28 | Oil-free lubricating compressor piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202108692U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214074A (en) * | 2013-06-03 | 2014-12-17 | 株式会社日立产机系统 | Slide component and air compressor using same and analytical instrument |
| CN107237730A (en) * | 2017-08-03 | 2017-10-10 | 南通虹登机械设备有限公司 | A kind of inverted Y-shaped oil-free gas compressor |
| CN107839262A (en) * | 2017-12-04 | 2018-03-27 | 徐洪 | A kind of PEEK/TPI alloy screws and its injection molding process |
| CN108252895A (en) * | 2018-02-07 | 2018-07-06 | 泉州市华德机电设备有限公司 | A kind of four cylinder oil-free direct connection air compressor machines |
| CN110168259A (en) * | 2016-12-13 | 2019-08-23 | 伯克哈特压缩机股份公司 | Piston ring and piston compressor for piston compressor |
| EP3757388A1 (en) * | 2019-06-26 | 2020-12-30 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Compressor |
-
2011
- 2011-06-28 CN CN201120222166XU patent/CN202108692U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214074A (en) * | 2013-06-03 | 2014-12-17 | 株式会社日立产机系统 | Slide component and air compressor using same and analytical instrument |
| CN104214074B (en) * | 2013-06-03 | 2016-08-31 | 株式会社日立产机系统 | Slide unit and use its gas compressor and analytical tool |
| CN110168259A (en) * | 2016-12-13 | 2019-08-23 | 伯克哈特压缩机股份公司 | Piston ring and piston compressor for piston compressor |
| CN107237730A (en) * | 2017-08-03 | 2017-10-10 | 南通虹登机械设备有限公司 | A kind of inverted Y-shaped oil-free gas compressor |
| CN107839262A (en) * | 2017-12-04 | 2018-03-27 | 徐洪 | A kind of PEEK/TPI alloy screws and its injection molding process |
| CN108252895A (en) * | 2018-02-07 | 2018-07-06 | 泉州市华德机电设备有限公司 | A kind of four cylinder oil-free direct connection air compressor machines |
| EP3757388A1 (en) * | 2019-06-26 | 2020-12-30 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Compressor |
| JP7542112B2 (en) | 2019-06-26 | 2024-08-29 | 株式会社神戸製鋼所 | Piston ring set |
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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: 20120111 Termination date: 20160628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |