CN102345596A - Piston seal structure of Stirling engine booster pump - Google Patents
Piston seal structure of Stirling engine booster pump Download PDFInfo
- Publication number
- CN102345596A CN102345596A CN2011103006078A CN201110300607A CN102345596A CN 102345596 A CN102345596 A CN 102345596A CN 2011103006078 A CN2011103006078 A CN 2011103006078A CN 201110300607 A CN201110300607 A CN 201110300607A CN 102345596 A CN102345596 A CN 102345596A
- Authority
- CN
- China
- Prior art keywords
- seal ring
- piston
- stirling engine
- fluororubber
- sealing
- 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
Images
Abstract
The invention belongs to a solar electric power generation technology, and relates to a piston seal structure of a Stirling engine booster pump. The piston seal structure comprises a booster pump piston (1) and a cylinder sleeve (2), and is characterized in that the cylindrical face of the piston (1) is provided with 2-4 annular sealing grooves provided with same sealing pieces, each sealing piece is composed of a fluororubber O-shaped seal ring (3) and an opening sealing ring (4) sleeved outside the luororubber O-shaped seal ring (3), and each sealing ring (4) is made of PEEK (polyether-ether-ketone) resin. The piston seal structure of the Stirling engine booster pump provided by the invention can be used for solving the piston sealing problem of the Stirling engine booster pump.
Description
Technical field
The invention belongs to solar energy generation technology, relate to a kind of piston sealing structure of Stirling engine suction booster.
Background technique
At present; The piston of gas boosting pump and the sealing between the cylinder sleeve single seal ring or the single metallic piston rings of adopting seal more; In use there are problems such as quick abrasion, life-span weak point in this sealing configuration; Especially under high pressure, high temperature, high speed operation condition, Sealing is easy to wearing and tearing, thereby causes seal failure.Traditional PTFE stuffing materials, temperature tolerance is poor, loses efficacy easily in the corrosive atmosphere more than 200 degree, so in the environment that steam, deep fat are arranged, should not use.The working environment of Stirling engine suction booster is high temperature, hyperbaric environment, and operating temperature is up to more than 200 degree, and present sealing configuration can not meet the demands.Do not retrieve the open source literature of domestic and international Stirling engine suction booster piston sealing structure.
Summary of the invention
The objective of the invention is: propose a kind of piston sealing structure of Stirling engine suction booster, to solve the piston seal problem of Stirling engine suction booster.
Technological scheme of the present invention is: Stirling engine suction booster piston sealing structure, comprise suction booster piston 1 and cylinder sleeve 2, and piston 1 is positioned at cylinder sleeve 2 and keeps Spielpassung; It is characterized in that: 2～4 parallel annular seal grooves are arranged on the cylndrical surface of piston 1, identical Sealing is installed in each seal groove; Said Sealing by fluororubber O-type seal ring 3 be enclosed within fluororubber O-type seal ring 3 outer opening seal rings 4 and form, seal ring 4 is by the polyether-ether-ketone resin manufacturing, the cross section of seal ring 4 is a rectangle, the opened gap δ=0.1mm～0.3mm of seal ring 4.
Advantage of the present invention is: proposed a kind of piston sealing structure of Stirling engine suction booster, solved the piston seal problem of Stirling engine suction booster.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the enlarged view of local A among Fig. 1.
Embodiment
Explain further details in the face of the present invention down.Referring to Fig. 1,2, Stirling engine suction booster piston sealing structure comprises suction booster piston 1 and cylinder sleeve 2, and piston 1 is positioned at cylinder sleeve 2 and keeps Spielpassung; It is characterized in that: 2～4 parallel annular seal grooves are arranged on the cylndrical surface of piston 1, identical Sealing is installed in each seal groove; Said Sealing by fluororubber O-type seal ring 3 be enclosed within fluororubber O-type seal ring 3 outer opening seal rings 4 and form, seal ring 4 is by the polyether-ether-ketone resin manufacturing, the cross section of seal ring 4 is a rectangle, the opened gap δ=0.1mm～0.3mm of seal ring 4.
The internal diameter of said fluororubber O-type seal ring 3 under free state is less than the groover rot diameter 0.1mm～0.2mm of annular seal groove; The internal diameter of seal ring 4 under free state equals the external diameter of fluororubber O-type seal ring 3 under free state; The D outer diameter 1=D+ (0～0.02) of seal ring 4 under free state; D is the internal diameter of cylinder sleeve 2, and unit is mm, and seal ring 4 and annular seal groove are in the axial direction Spielpassung.
The aperture slots of said seal ring 4 is one of following shape:
(1) vertical clearance gap, the parallel axes of aperture slots and seal ring [4];
(2) inclined slot, the axis of aperture slots and seal ring [4] forms 30 °～60 ° angles;
(3) ladder slit, aperture slots are step shape.
Working principle of the present invention is: after this kind black box is packed into; When the temperature of working medium (hydrogen or helium) reaches more than 200 ℃; Fluororubber O-type ring 3 will produce swell increment; Give seal ring 4 enough precompressions, make whole black box and piston 1 and cylinder liner 2 tight contacts and reach good sealing effect.
Following table provides 3 embodiments' of the present invention major parameter.Unit is mm in the table.
Claims (3)
1. Stirling engine suction booster piston sealing structure comprises suction booster piston [1] and cylinder sleeve [2], and piston [1] is positioned at cylinder sleeve [2] and keeps Spielpassung; It is characterized in that: 2～4 parallel annular seal grooves are arranged on the cylndrical surface of piston [1], identical Sealing is installed in each seal groove; Said Sealing is by fluororubber O-type seal ring [3] and be enclosed within fluororubber O-type seal ring [3] outer opening seal ring [4] and form; Seal ring [4] is by the polyether-ether-ketone resin manufacturing; The cross section of seal ring [4] is a rectangle, the opened gap δ=0.1mm～0.3mm of seal ring [4].
2. Stirling engine suction booster piston sealing structure according to claim 1; It is characterized in that: the internal diameter of said fluororubber O-type seal ring [3] under free state is less than the groover rot diameter 0.1mm～0.2mm of annular seal groove; The internal diameter of seal ring [4] under free state equals the external diameter of fluororubber O-type seal ring [3] under free state; The D outer diameter 1=D+ (0～0.02) of seal ring [4] under free state; D is the internal diameter of cylinder sleeve [2], and unit is mm, and seal ring [4] and annular seal groove are in the axial direction Spielpassung.
3. Stirling engine suction booster piston sealing structure according to claim 1 is characterized in that: the aperture slots of said seal ring [4] is one of following shape:
(1) vertical clearance gap, the parallel axes of aperture slots and seal ring [4];
(2) inclined slot, the axis of aperture slots and seal ring [4] forms 30 °～60 ° angles;
(3) ladder slit, aperture slots are step shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103006078A CN102345596A (en) | 2011-09-29 | 2011-09-29 | Piston seal structure of Stirling engine booster pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103006078A CN102345596A (en) | 2011-09-29 | 2011-09-29 | Piston seal structure of Stirling engine booster pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102345596A true CN102345596A (en) | 2012-02-08 |
Family
ID=45544576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103006078A Pending CN102345596A (en) | 2011-09-29 | 2011-09-29 | Piston seal structure of Stirling engine booster pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102345596A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009021170A1 (en) * | 2009-05-13 | 2010-12-16 | Compart Compressor Technology Gmbh | Cylinder and piston rod seal of a linear compressor |
| CN201679708U (en) * | 2010-05-24 | 2010-12-22 | 卢小玲 | Circulation cooling lubrication type plunger sealing structure |
| CN102080651A (en) * | 2011-01-18 | 2011-06-01 | 杭州大潮石化设备有限公司 | Long-acting no-leakage plunger sealing structure for plunger type measuring pump |
| CN201972912U (en) * | 2011-04-06 | 2011-09-14 | 西安长庆科技工程有限责任公司 | Sealing structure of piston type casing gas booster pump |
-
2011
- 2011-09-29 CN CN2011103006078A patent/CN102345596A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009021170A1 (en) * | 2009-05-13 | 2010-12-16 | Compart Compressor Technology Gmbh | Cylinder and piston rod seal of a linear compressor |
| CN201679708U (en) * | 2010-05-24 | 2010-12-22 | 卢小玲 | Circulation cooling lubrication type plunger sealing structure |
| CN102080651A (en) * | 2011-01-18 | 2011-06-01 | 杭州大潮石化设备有限公司 | Long-acting no-leakage plunger sealing structure for plunger type measuring pump |
| CN201972912U (en) * | 2011-04-06 | 2011-09-14 | 西安长庆科技工程有限责任公司 | Sealing structure of piston type casing gas booster pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109538309A (en) | A kind of shaft end self sealing structure of high revolving speed High Pressure Difference | |
| CN202280479U (en) | Lamination-type seal device of steam turbine high-pressure gas injection insertion pipe | |
| CN108019243A (en) | A kind of integral bearing A seating turbine | |
| CN102345596A (en) | Piston seal structure of Stirling engine booster pump | |
| CN207349084U (en) | The gland seal device of oil free screw machine | |
| CN106285785B (en) | The single machine two-stage dilating screw machine that pressure energy of natural gas recycles | |
| CN212296505U (en) | Mechanical sealing structure of steam turbine | |
| CN104481841B (en) | Super-pressure piston | |
| CN103470772B (en) | High speed and high pressure mechanical seal device | |
| CN201934780U (en) | Modified filler pressing sleeve device | |
| CN206129324U (en) | No whelk pole vapor expander | |
| CN203146034U (en) | Radial sealing device capable of preventing structural internal leakage of cylinder of steam turbine | |
| CN202349212U (en) | Circular clearance sealing mechanism of high temperature rotating large-diameter equipment | |
| CN105240053A (en) | Screw expander | |
| CN205207680U (en) | Three lamella formula carbocycle seal structure | |
| CN205823639U (en) | Vacuum machine sealing mechanism | |
| CN206129323U (en) | A twin -screw expander for low temperature waste heat recovery system | |
| CN205225346U (en) | Prevent steam turbine steam leak's bearing seal | |
| CN104791021A (en) | Novel shaft end clearance-free vapor seal of supercritical turbine | |
| CN205207679U (en) | Carbocycle seal structure | |
| CN204573096U (en) | A kind of active air-tight oil catch | |
| CN202402084U (en) | Contact type honeycomb sealing structural body | |
| CN212535779U (en) | Special safety seal for supercritical carbon dioxide cycle power generation expander | |
| CN212774761U (en) | Sealing mechanism of high-temperature steam Roots compressor | |
| CN204716500U (en) | Piston and piston-ring packing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120208 |