CN204299857U - High-Pressure Compressor super-pressure piston - Google Patents
High-Pressure Compressor super-pressure piston Download PDFInfo
- Publication number
- CN204299857U CN204299857U CN201420729182.1U CN201420729182U CN204299857U CN 204299857 U CN204299857 U CN 204299857U CN 201420729182 U CN201420729182 U CN 201420729182U CN 204299857 U CN204299857 U CN 204299857U
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- pressure
- ring
- piston
- piston body
- gland
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- Expired - Fee Related
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Abstract
A kind of High-Pressure Compressor super-pressure piston being applied to gas extra-high tension unit disclosed in the utility model, piston body (9) is shaped with step in one-level step, two stage steps and axle head, one-level step is set with copper washer II(11) and the combined seal ring II(10 that is pressed on copper washer II), phantom ring (6) is sleeved on the cylinder of the two stage steps of piston body (9), and radial direction is shaped with pressure relief vent C, on the piston body and push down phantom ring (6), clamp nut (1) to be spirally connected step in piston body (9) axle head by gland (2) gland (2) cover; Phantom ring and sealing ring thereof are radially expanded by pressure effect generation in cylinder barrel, thus ensure seal clearance and sealing load constant.The utility model adopts combination sealing mode, and make High-Pressure Compressor super-pressure plunger designs and processing more simple, High-Pressure Compressor super-pressure piston is more reliable on high pressure dynamic sealing.
Description
Technical field
The utility model relates to the High-Pressure Compressor super-pressure piston that a kind of operating pressure can reach 0MPa ~ 200MPa.
Background technology
The sealing means of the High-Pressure Compressor super-pressure piston of prior art on gas compressor is hard sealing or soft seal, structure and simple, but sealing effectiveness is all undesirable, hard sealing is to the wearing and tearing of ultra-high pressure cylinder and severity thereof, and mostly be the eighties use, and along with super-pressure cylinder diameter increase sealing effectiveness worse and worse.Simple soft seal is short for service life, and super-pressure leaks serious, to operating ambient temperature and lubricating requirement higher.A domestic normally individual difficult problem in High-Pressure Compressor super-pressure plunger designs, external High-Pressure Compressor super-pressure piston seal mode structure relies on machining accuracy, and special material meets.
Utility model content
It is simple that the purpose of this utility model is to provide a kind of structure, and be easy to install, reliability is high, good seal performance, and security height can realize the movable sealing of gas high pressure air compressor super-pressure piston.
The utility model solves the technical scheme that its technical problem adopts: a kind of High-Pressure Compressor super-pressure piston, comprise the guide ring be sleeved on piston body 9, gland and phantom ring, it is characterized in that: piston body 9 is shaped with one-level step, step in two stage steps and axle head, one-level step is set with copper washer II11 and is pressed in the combined seal ring II10 on copper washer II, phantom ring 6 is sleeved on the cylinder of the two stage steps of piston body 9, and radial direction is shaped with pressure relief vent C, gland (2) overlaps on the piston body and pushes down phantom ring 6, clamp nut 1 to be spirally connected step in piston body 9 axle head by gland 2, phantom ring and sealing ring thereof are radially expanded by pressure effect generation in cylinder barrel, thus ensure seal clearance and sealing load constant.
The utility model has following beneficial effect compared to prior art:
Safe and reliable, processing is simple.The utility model adopts combination sealing mode, and make High-Pressure Compressor super-pressure plunger designs and processing more simple, High-Pressure Compressor super-pressure piston is more reliable on high pressure dynamic sealing.Piston life lengthens, and environment for use temperature can reach 250 DEG C, and piston portable cord speed can reach 2m/s, reduces the wearing and tearing of ultra-high pressure cylinder inwall.
It is high that the utility model has reliability, good seal performance, the feature that security is high.The utility model utilizes the situations such as structure makes up working ability difference, and material is weak.Thus do not rely on the external gas compressor of import.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model High-Pressure Compressor super-pressure piston.
In figure: 1 clamp nut, 2 glands, 3 guiding bad I, 4 combined seal ring I, 5 copper washer I, 6 phantom rings, 7O type circle, 8 backing-up screws, 9 piston bodies, 10 combined seal ring II, 11 copper washer II, 12 guide ring II.
Detailed description of the invention
In the High-Pressure Compressor super-pressure piston embodiment shown in Fig. 1, High-Pressure Compressor super-pressure piston comprises piston body 9, piston body 9 is equipped with guide ring, combined seal ring, copper washer, phantom ring, gland, clamp nut, O type circle and screw.Piston body 9 is shaped with step in one-level step, two stage steps and axle head.Piston body 9 one end is provided with so that the screwed hole extracted in cylinder of installation and maintenance instrument.Piston seal gas pressure≤250MPa.
The guiding bad I3 being assemblied in gland 2 outer toroid connected in star and the guide ring II12 being enclosed within the upper outside toroidal cavity of piston body 9 is coaxially assemblied in cylinder barrel.Piston body 9 is equipped with two groups of combined seal rings, wherein, copper washer II11 is contained on piston body 9 one-level step, and combined seal ring II10 is pressed on copper washer II.Phantom ring 6 is sleeved on the cylinder of the two stage steps of piston body 9, and end face seal O type circle 7, radial direction is also shaped with pressure relief vent C.Phantom ring step is equipped with copper washer I5, combined seal ring I4 is pressed on copper washer I5.Be provided with the groove of assembling O type circle 7 bottom phantom ring, O type circle 7 is enclosed in the groove bottom phantom ring.Gland 2 is overlapped on the piston body by cylinder barrel and pushes down phantom ring 6.Clamp nut 1 is threaded with piston body 9 and is pressed on the interior step of gland 2.Gland 2 radial direction is shaped with backing-up screw 8, and backing-up screw 8 withstands cock body 9 by the radial direction through hole of gland 2.Clamp nut 1 uses backing-up screw 8 dieback with locking.
When piston promotes toward the left side, combined seal ring I plays sealing function, and gas is compressed, and pressure raises, and realizes the movable sealing of piston extra-high.When boost pressure is more than 150MPa, because cylinder barrel expansion clearance becomes large.Combined seal ring sealing must have fixed interval (FI), and not so sealing load is inadequate.Phantom ring also expands together by interior pressure effect, and sealing ring is contained on phantom ring also radial displacement together, thus ensure that seal clearance is constant.Ensure that sealing load is constant.
Claims (8)
1. a High-Pressure Compressor super-pressure piston, comprise the guide ring, gland and the phantom ring that are sleeved on piston body (9), it is characterized in that: piston body (9) is shaped with step in one-level step, two stage steps and axle head, one-level step is set with copper washer II(11) and the combined seal ring II(10 that is pressed on copper washer II), phantom ring (6) is sleeved on the cylinder of the two stage steps of piston body (9), on the piston body and push down phantom ring (6), clamp nut (1) to be spirally connected step in piston body (9) axle head by gland (2) gland (2) cover; Phantom ring and sealing ring thereof are radially expanded by pressure effect generation in cylinder barrel, with ensure seal clearance and sealing load constant.
2. High-Pressure Compressor super-pressure piston according to claim 1, is characterized in that, piston body (9) one end is provided with so that the screwed hole extracted in cylinder of installation and maintenance instrument.
3. High-Pressure Compressor super-pressure piston according to claim 1, it is characterized in that, be assemblied in the guiding bad I(3 of gland (2) outer toroid connected in star) and be enclosed within the guide ring II(12 of piston body (9) upper outside toroidal cavity) be coaxially assemblied in cylinder barrel.
4. High-Pressure Compressor super-pressure piston according to claim 1, it is characterized in that, piston body (9) is equipped with two groups of combined seal rings, wherein, copper washer II(11) be contained on piston body (9) one-level step, combined seal ring II(10) be pressed on copper washer II.
5. High-Pressure Compressor super-pressure piston according to claim 1, is characterized in that, phantom ring (6) end face seal O type circle (7).
6. High-Pressure Compressor super-pressure piston according to claim 1, is characterized in that, phantom ring (6) radial direction is also shaped with pressure relief vent C.
7. High-Pressure Compressor super-pressure piston according to claim 1, is characterized in that, phantom ring step is equipped with copper washer I(5), combined seal ring I(4) be pressed in copper washer I(5) on.
8. High-Pressure Compressor super-pressure piston according to claim 1, is characterized in that, gland (2) radial direction is shaped with backing-up screw (8), and backing-up screw (8) withstands cock body (9) by the radial direction through hole of gland (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420729182.1U CN204299857U (en) | 2014-11-28 | 2014-11-28 | High-Pressure Compressor super-pressure piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420729182.1U CN204299857U (en) | 2014-11-28 | 2014-11-28 | High-Pressure Compressor super-pressure piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299857U true CN204299857U (en) | 2015-04-29 |
Family
ID=53105402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420729182.1U Expired - Fee Related CN204299857U (en) | 2014-11-28 | 2014-11-28 | High-Pressure Compressor super-pressure piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299857U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799061A (en) * | 2018-08-15 | 2018-11-13 | 安徽士必达液压器材有限公司 | A kind of gas boosting pump super-pressure piston |
-
2014
- 2014-11-28 CN CN201420729182.1U patent/CN204299857U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799061A (en) * | 2018-08-15 | 2018-11-13 | 安徽士必达液压器材有限公司 | A kind of gas boosting pump super-pressure piston |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20171128 |