CN202914728U - U-shaped and spring-based energy storage pressurizing seal ring - Google Patents
U-shaped and spring-based energy storage pressurizing seal ring Download PDFInfo
- Publication number
- CN202914728U CN202914728U CN 201220672413 CN201220672413U CN202914728U CN 202914728 U CN202914728 U CN 202914728U CN 201220672413 CN201220672413 CN 201220672413 CN 201220672413 U CN201220672413 U CN 201220672413U CN 202914728 U CN202914728 U CN 202914728U
- Authority
- CN
- China
- Prior art keywords
- shaped
- ring
- nonmetal
- metal
- seal 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a U-shaped and spring-based energy storage pressurizing seal ring. The U-shaped and spring-based energy storage pressurizing seal ring comprises a nonmetal casing sleeve, a U-shaped metal ring and a check ring, wherein the section of the U-shaped metal ring is U shaped; a U-shaped groove is formed in an inner space of the U-shaped metal ring; an opening end of the U-shaped metal ring faces a sealed medium side or a pressure side; the nonmetal casing sleeve is cased outside the U-shaped metal ring and comprises a sealing end surface which is parallel to the opening end surface of the U-shaped metal ring; the check ring is filled into the U-shaped groove in the U-shaped metal ring; and an exposed surface of the check ring, parallel to the opening end surface of the U-shaped metal ring, is higher than the sealing end surface of the nonmetal casing sleeve. The U-shaped and spring-based energy storage pressurizing seal ring, disclosed by the utility model, is mainly applied to low temperature (below -110 DEG C) and ultralow temperature (-196 to -256 DEG) environments, and can be applied to both static seal and dynamic seal, and in particular be applied to a low-temperature and high-pressure environment.
Description
Technical field
The utility model belongs to piston system or pressure system is used the Sealing field, is specifically related to a kind of U-shaped ring structure that can be used under low temperature (below 110 ℃) and ultralow temperature (196～-256 ℃) environment.
Background technique
International, domestic existing seal ring product of the same type is only applicable to static seal, low pressure, end face seal at present.Be used for the seal ring of motive sealing, metal frame is helical spring, and jointing has solder joint, has hidden danger under low temperature condition.
In the ultralow temperature situation, sclerosis can occur or even break in rubber o-ring, and can not use; Metal O type circle or C type circle Sealing can't provide to the contour projector of piston rod and piston enough compensation.
In the ultralow temperature situation, metal and nonmetally all can shrink, and the shrinkage of non-metallic component generally is about ten times of metal parts, in piston or sealing system, if O shape circle or similar Sealing do not have corresponding shrinkage-compensating measure, will leak.If Sealing is changed into metallic material, and make Sealing have enough elasticity can to address this problem, but can only be used for static seal, because in the motive sealing situation, metal and metal rub, and sealing surface is scratched, and still can leak after using certain number of times.
Prior art increases nonmetal film outward by metal spring can solve the problem that both can not take into account noted earlier, but still has a lot of problems.
One, this metal spring is spiral spring, and connected portion connects by welding method, and has overlappingly, and in the ultralow temperature situation, solder joint has the possibility of fracture, has very large hidden danger; And overlapping part is compared with other positions, the elastic force that provides is larger, causes the elastic force on the whole circumference inhomogeneous, and metal spring issues stiffization in low temperature condition, this elastic force non-uniform phenomenon can be given prominence to obviously more, even can have influence on the performance of whole moving system;
Secondly, this metal spring is spiral-shaped, also imperfect with the surface of contact of nonmetal film, under the extruding of elastic force and medium power, can stay impression at the nonmetal film inwall, make the membrane wall thickness ununiformity even, thereby cause the shrinkage of film under low temperature condition inhomogeneous, spring supporting less than the position have and very largely may become the leak point.
The model utility content
In order to overcome defects, the utility model provides a kind of U-shaped spring energy-storage supercharging seal ring, U-shaped spring energy-storage supercharging seal ring of the present utility model is mainly used under low temperature (below 110 ℃) and ultralow temperature (196～-256 ℃) environment, and can be used in static seal, also can be used for motive sealing, be particularly useful for the cryogenic high pressure environment.
The utility model for the technological scheme that solves its technical problem and adopt is:
A kind of U-shaped spring energy-storage supercharging seal ring, by the nonmetal-coated cover, metal U-shaped circle and back-up ring consist of, wherein, the cross section of described metal U-shaped circle is U-shaped, and the inner space of described metal U-shaped circle consists of U-groove bevel, the open end of described metal U-shaped circle towards sealed medium one side or on the pressure side, described nonmetal-coated cover is coated on outside the described metal U-shaped circle, and described nonmetal-coated cover has the seal face that parallels with the open end of described metal U-shaped circle, described back-up ring is clogged in the U-groove bevel of described metal U-shaped circle, and the exposed surface that parallels with the open end of described metal U-shaped circle of described back-up ring is above the seal face of described nonmetal-coated cover.
The utility model for the further technological scheme that solves its technical problem and adopt is:
Say further, described nonmetal-coated cover only is coated on the outer surface of described metal U-shaped circle.
Be preferably, even thickness and its inner and outer surface of described metal U-shaped circle are all smooth.
Be preferably, described back-up ring is metal collar or nonmetal back-up ring.
Be preferably, the end that described back-up ring is positioned at U-groove bevel has chamfering.
Be preferably, described nonmetal-coated cover is polytetrafluoroethylene (PTFE) wrap or polychlorotrifluoroethylene (PCTFE) wrap.
The beneficial effects of the utility model are: U-shaped spring energy-storage supercharging seal ring of the present utility model is by the nonmetal-coated cover; metal U-shaped circle and back-up ring consist of; with metal U-shaped circle as skeleton; the outside coats the nonmetal-coated cover; inner filling back-up ring; the overall structure welding; metal U-shaped circle of the present utility model can provide uniform elastic force; and the amount of deformation under low temperature environment is even; cooperate with nonmetal-coated cover and can realize better sealing effect; it is the effect that whole ring structure improves rigidity that back-up ring not only has support metal U-shaped circle; and because its outside exceeds the seal face of nonmetal-coated cover; protection nonmetal-coated cover in to-and-fro motion; avoid the nonmetal-coated cover because be damaged with the metal bump; to sum up, U-shaped spring energy-storage supercharging seal ring of the present utility model can be used under low temperature (below 110 ℃) and ultralow temperature (196～-256 ℃) environment, and can be used in static seal; also can be used for motive sealing, be particularly useful for the cryogenic high pressure environment.
Description of drawings
Fig. 1 is the utility model cross-sectional view.
Embodiment
Below by specific instantiation mode of execution of the present utility model is described, those of ordinary skills can understand advantage of the present utility model and effect easily by content disclosed in the present specification.The utility model also can be implemented by other different modes, namely under the category that does not disclose departing from the utility model, can carry out different modifications and change.
Embodiment: a kind of U-shaped spring energy-storage supercharging seal ring, by nonmetal-coated cover 1, metal U-shaped circle 2 and back-up ring 3 consist of, wherein, the cross section of described metal U-shaped circle is U-shaped, and the inner space of described metal U-shaped circle consists of U-groove bevel 21, the open end of described metal U-shaped circle towards sealed medium one side or on the pressure side, described nonmetal-coated cover is coated on the outer surface of described metal U-shaped circle, and described nonmetal-coated cover has the seal face 11 that parallels with the open end of described metal U-shaped circle, described back-up ring is clogged in the U-groove bevel of described metal U-shaped circle, and the exposed surface 31 that parallels with the open end of described metal U-shaped circle of described back-up ring is above the seal face 11 of described nonmetal-coated cover.
The utility model has adopted special stainless steel metal U-shaped circle as skeleton, and outside coating nonmetal-coated cover (material such as PTFE, PCTFE, but be not limited to PTFE, PCTFE, can be other possible materials).Metal U-shaped circle is sheet metal moulding and through the processing of Overheating Treatment and precision optical machinery, inside and outside smooth surface and regular shape, even thickness, dimensional accuracy are high, no matter be under low temperature or the normal temperature environment, uniform elastic force can be provided, and the amount of deformation under low temperature environment is even, overlap in the flawless situation at nonmetal-coated, can make nonmetal-coated cover and the tight even contact of metal U-shaped ring outer wall, realize better sealing effect.
Simultaneously; the designed back-up ring of U-shaped spring energy-storage supercharging seal ring of the present utility model is rigid; it can be the metal collar such as materials such as steel; also nonmetallic material such as NYLON; not only having support metal U-shaped circle is the effect that whole ring structure improves rigidity; and because its outside exceeds the seal face of nonmetal-coated cover, protection nonmetal-coated cover in to-and-fro motion is avoided the nonmetal-coated cover because be damaged with the metal bump.The end that described back-up ring is positioned at U-groove bevel has chamfering, is convenient to fill in the U-groove bevel of metal U-shaped circle.
Claims (6)
1. U-shaped spring energy-storage supercharging seal ring, it is characterized in that: by nonmetal-coated cover (1), metal U-shaped circle (2) and back-up ring (3) consist of, wherein, the cross section of described metal U-shaped circle is U-shaped, and the inner space of described metal U-shaped circle consists of U-groove bevel (21), the open end of described metal U-shaped circle towards sealed medium one side or on the pressure side, described nonmetal-coated cover is coated on outside the described metal U-shaped circle, and described nonmetal-coated cover has the seal face (11) that parallels with the open end of described metal U-shaped circle, described back-up ring is clogged in the U-groove bevel of described metal U-shaped circle, and the exposed surface (31) that parallels with the open end of described metal U-shaped circle of described back-up ring is above the seal face (11) of described nonmetal-coated cover.
2. U-shaped spring energy-storage supercharging seal ring as claimed in claim 1 is characterized in that: described nonmetal-coated cover only is coated on the outer surface of described metal U-shaped circle.
3. U-shaped spring energy-storage supercharging seal ring as claimed in claim 1, it is characterized in that: even thickness and its inner and outer surface of described metal U-shaped circle are all smooth.
4. U-shaped spring energy-storage supercharging seal ring as claimed in claim 1, it is characterized in that: described back-up ring is metal collar or nonmetal back-up ring.
5. U-shaped spring energy-storage supercharging seal ring as claimed in claim 1, it is characterized in that: the end that described back-up ring is positioned at U-groove bevel has chamfering.
6. U-shaped spring energy-storage supercharging seal ring as claimed in claim 1 is characterized in that: described nonmetal-coated cover is teflon wrap or polychlorotrifluoroethylene wrap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672413 CN202914728U (en) | 2012-12-07 | 2012-12-07 | U-shaped and spring-based energy storage pressurizing seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672413 CN202914728U (en) | 2012-12-07 | 2012-12-07 | U-shaped and spring-based energy storage pressurizing seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914728U true CN202914728U (en) | 2013-05-01 |
Family
ID=48163045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220672413 Expired - Fee Related CN202914728U (en) | 2012-12-07 | 2012-12-07 | U-shaped and spring-based energy storage pressurizing seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914728U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788618A (en) * | 2014-01-14 | 2014-05-14 | 合肥通用机械研究院 | Polyaryletherketone composite material, preparation method thereof and sealing ring using material |
| CN104500747A (en) * | 2014-11-21 | 2015-04-08 | 广西智通节能环保科技有限公司 | Silica gel filling U-shaped spring seal ring |
| CN105864462A (en) * | 2015-08-17 | 2016-08-17 | 江苏宏泰石化机械有限公司 | Manual two-section hidden-rod integrated flat valve |
| CN106523711A (en) * | 2016-11-17 | 2017-03-22 | 中国科学院长春光学精密机械与物理研究所 | Axial dynamic gas sealing structure for gyro-stabilized platform |
| CN111006065A (en) * | 2019-12-25 | 2020-04-14 | 湖南致航精密制造有限公司 | Two-way sealing ring and sealing device |
| EP4227559A1 (en) * | 2022-07-22 | 2023-08-16 | Danfoss A/S | Sealing system with annular seal member and expanding ring for bi-directional sealing, fluid valve with sealing system, and sealing method |
-
2012
- 2012-12-07 CN CN 201220672413 patent/CN202914728U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788618A (en) * | 2014-01-14 | 2014-05-14 | 合肥通用机械研究院 | Polyaryletherketone composite material, preparation method thereof and sealing ring using material |
| CN103788618B (en) * | 2014-01-14 | 2016-03-02 | 合肥通用机械研究院 | Polyaryletherketone composite material, preparation method thereof and sealing ring using material |
| CN104500747A (en) * | 2014-11-21 | 2015-04-08 | 广西智通节能环保科技有限公司 | Silica gel filling U-shaped spring seal ring |
| CN105864462A (en) * | 2015-08-17 | 2016-08-17 | 江苏宏泰石化机械有限公司 | Manual two-section hidden-rod integrated flat valve |
| CN106523711A (en) * | 2016-11-17 | 2017-03-22 | 中国科学院长春光学精密机械与物理研究所 | Axial dynamic gas sealing structure for gyro-stabilized platform |
| CN106523711B (en) * | 2016-11-17 | 2017-12-08 | 中国科学院长春光学精密机械与物理研究所 | A kind of gyro-stabilized platform axial direction Dynamic Gas Seal structure |
| CN111006065A (en) * | 2019-12-25 | 2020-04-14 | 湖南致航精密制造有限公司 | Two-way sealing ring and sealing device |
| EP4227559A1 (en) * | 2022-07-22 | 2023-08-16 | Danfoss A/S | Sealing system with annular seal member and expanding ring for bi-directional sealing, fluid valve with sealing system, and sealing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202914728U (en) | U-shaped and spring-based energy storage pressurizing seal ring | |
| CN103851192A (en) | U-shaped spring energy accumulation pressurizing sealing ring | |
| CN104500746B (en) | A kind of rotation axis seal structure | |
| CN107314113B (en) | A kind of mechanical sealing static ring mounting structure of radial and axial double containment | |
| CN203517310U (en) | Sealing structure for high-pressure composite cylinder | |
| CN203413264U (en) | High temperature oil sealing type rotary joint | |
| CN208397543U (en) | A kind of rapid-maintenance pipeline leakage device | |
| CN207064939U (en) | Zero leakage non-metal expansion joint | |
| CN208750222U (en) | A kind of pipeline jointing construction | |
| CN207848397U (en) | A kind of seal assembly for pump housing sealing | |
| CN203420127U (en) | Inner barrel rotating mechanism of roller washing machine and washing machine | |
| CN203309387U (en) | Corrugated pipe | |
| CN106439013B (en) | A kind of ring pipe sealing ring and its processing method for ultralow temperature dynamic sealing | |
| CN204729628U (en) | A kind of cylindrical rubber Sealing carrying Seal cage | |
| CN219954603U (en) | Bellows with leak-proof structure | |
| CN201500709U (en) | Sealing device of metal bellows wave pitch | |
| CN204921995U (en) | Polyurethane sealing washer | |
| CN205592393U (en) | A metal framework PTFE sealing member for rotation axis | |
| CN204459524U (en) | A kind of Novel water pipe connecting device | |
| CN209725517U (en) | A kind of complex thin-wall precision aluminium-alloy structural member | |
| CN204879110U (en) | Heavy -calibre stainless steel steel pipe fitting | |
| CN207325541U (en) | A kind of lateral leakage protection radial direction self sealss interface arrangement of full-automatic medical rack for cleaning | |
| CN204099713U (en) | Be provided with the valve cover portion sealing configuration of high-pressure bellows | |
| CN205404009U (en) | Shock -proof pressure gauge leak -proof structure | |
| CN203022682U (en) | Setting device for detection pressurization of gas tightness of casing pipe |
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: 20130501 Termination date: 20151207 |
|
| EXPY | Termination of patent right or utility model |