CN103851192A - U-shaped spring energy accumulation pressurizing sealing ring - Google Patents
U-shaped spring energy accumulation pressurizing sealing ring Download PDFInfo
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- CN103851192A CN103851192A CN201210524768.XA CN201210524768A CN103851192A CN 103851192 A CN103851192 A CN 103851192A CN 201210524768 A CN201210524768 A CN 201210524768A CN 103851192 A CN103851192 A CN 103851192A
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Abstract
The invention discloses a U-shaped spring energy accumulation pressurizing sealing ring, which consists of a nonmetal covering sleeve, a metal U-shaped ring and a baffle ring, wherein the cross section of the metal U-shaped ring is in a U shape, in addition, a U-shaped groove is formed in an inner space of the metal U-shaped ring, the opening end surface of the metal U-shaped ring faces one side or the pressure side of a sealed medium, the non metal covering sleeve covers outside the metal U-shaped ring, in addition, the nonmetal covering sleeve has a sealing end surface parallel to the opening end surface of the metal U-shaped ring, the baffle ring is plugged into the U-shaped groove of the metal U-shaped ring, and in addition, the outwards exposed surface, parallel to the opening end surface of the metal U-shaped ring, of the baffle ring is higher than the sealing end surface of the nonmetal covering sleeve. The U-shaped spring energy accumulation pressurizing sealing ring is mainly used in low-temperature (below -110 DEG C) and ultra-low-temperature (-196 DEG C to -256 DEG C) environment, can be used for static sealing and dynamical sealing, and is particularly applicable to low-temperature high-pressure environment.
Description
Technical field
The invention belongs to piston system or pressure system and use Sealing field, be specifically related to one and can be used in the U-shaped ring structure under low temperature (110 DEG C following) and ultralow temperature (196～-256 DEG C) 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.For the seal ring of motive sealing, metal frame is helical spring, and jointing has solder joint, under low temperature condition, has hidden danger.
In ultralow temperature situation, can there is sclerosis or even break in rubber o-ring, and can not use; Metal O type circle or C type circle Sealing, cannot provide enough compensation to the contour projector of piston rod and piston.
In ultralow temperature situation, metal and nonmetally all can shrink, and the shrinkage of non-metallic component is generally ten times of left and right 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 there is enough elasticity can to address this problem, but can only be used for static seal, because in motive sealing situation, metal and metal rub, and can make sealing surface scratch, and after the certain number of times of use, still can leak.
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, connected portion connects by welding method, and have overlapping, in ultralow temperature situation, solder joint have occur fracture possibility, there is very large hidden danger; And overlapping part is compared with other positions, the elastic force providing is larger, causes the elastic force on 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 leave impression at nonmetal film inwall, make membrane wall thickness ununiformity even, thereby cause the shrinkage of film under low temperature condition inhomogeneous, spring supporting less than position have and very largely may become leak point.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of U-shaped spring energy-storage supercharging seal ring, U-shaped spring energy-storage supercharging seal ring of the present invention is mainly used under low temperature (110 DEG C following) and ultralow temperature (196～-256 DEG C) environment, and can be used in static seal, also can be used for motive sealing, be particularly useful for cryogenic high pressure environment.
The present invention for the technological scheme that solves its technical problem and adopt is:
A kind of U-shaped spring energy-storage supercharging seal ring, by nonmetal-coated cover, metal U-shaped circle and back-up ring form, wherein, the cross section of described metal U-shaped circle is U-shaped, and the inner space of described metal U-shaped circle forms 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 described metal U-shaped circle, and described nonmetal-coated cover has the seal face paralleling 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 described back-up ring parallels with the open end of described metal U-shaped circle is above the seal face of described nonmetal-coated cover.
The present invention for the further technological scheme that solves its technical problem and adopt is:
Say further, described nonmetal-coated cover is only 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, one 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 invention has the beneficial effects as follows: U-shaped spring energy-storage supercharging seal ring of the present invention is by nonmetal-coated cover, metal U-shaped circle and back-up ring form, using metal U-shaped circle as skeleton, the coated nonmetal-coated cover in outside, inner filling back-up ring, overall structure welding, metal U-shaped circle of the present invention can provide uniform elastic force, and the amount of deformation under low temperature environment is even, coordinate and can realize better sealing effect with nonmetal-coated cover, 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 that nonmetal-coated overlaps, in to-and-fro motion, protect nonmetal-coated cover, avoid nonmetal-coated cover because clash into metal and be damaged, to sum up, U-shaped spring energy-storage supercharging seal ring of the present invention can be under low temperature (110 DEG C following) and ultralow temperature (196～-256 DEG C) environment, and can be used in static seal, also can be used for motive sealing, be particularly useful for cryogenic high pressure environment.
Brief description of the drawings
Fig. 1 is cross-sectional view of the present invention.
Embodiment
Below, by specific instantiation explanation embodiments of the present invention, those of ordinary skill in the art can understand advantage of the present invention and effect easily by content disclosed in the present specification.The present invention also can be implemented by other different modes, under not departing from disclosed category, 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 form, wherein, the cross section of described metal U-shaped circle is U-shaped, and the inner space of described metal U-shaped circle forms 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 paralleling 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 described back-up ring parallels with the open end of described metal U-shaped circle is above the seal face 11 of described nonmetal-coated cover.
The present invention has adopted special stainless steel metal U-shaped circle as skeleton, and outside is coated nonmetal-coated cover (material is as PTFE, PCTFE, but is not limited to PTFE, PCTFE, can be other possible materials).Metal U-shaped circle is sheet metal moulding and processes through 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 normal temperature environment, uniform elastic force can be provided, and the amount of deformation under low temperature environment is even, overlap in 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 invention is rigid; can be as the metal collar of the 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 that nonmetal-coated overlaps, in to-and-fro motion, protect nonmetal-coated cover, avoid nonmetal-coated cover because clash into and be damaged with metal.One 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. a 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) form, wherein, the cross section of described metal U-shaped circle is U-shaped, and the inner space of described metal U-shaped circle forms 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 described metal U-shaped circle, and described nonmetal-coated cover has the seal face (11) paralleling 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 described back-up ring parallels with the open end of described metal U-shaped circle 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 is only 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, 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, 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, is characterized in that: one 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 |
|---|---|---|---|
| CN201210524768.XA CN103851192A (en) | 2012-12-07 | 2012-12-07 | U-shaped spring energy accumulation pressurizing sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210524768.XA CN103851192A (en) | 2012-12-07 | 2012-12-07 | U-shaped spring energy accumulation pressurizing sealing ring |
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| Publication Number | Publication Date |
|---|---|
| CN103851192A true CN103851192A (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210524768.XA Pending CN103851192A (en) | 2012-12-07 | 2012-12-07 | U-shaped spring energy accumulation pressurizing sealing ring |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121438A (en) * | 2014-07-14 | 2014-10-29 | 洛阳能源密封件有限公司 | Soft sealing device provided with grooves in butting surfaces and applied to connecting flange |
| CN104500737A (en) * | 2015-01-06 | 2015-04-08 | 苏州道森阀门有限公司 | Spring type energy storing metal sealing ring |
| CN105546119A (en) * | 2016-02-02 | 2016-05-04 | 天紫环保投资控股有限公司 | High-temperature and high-pressure sliding sealing structure for steam catapult device |
| CN108799498A (en) * | 2017-04-28 | 2018-11-13 | 凯氟隆（厦门）密封件有限公司 | A kind of Novel down-hole tool combinations encapsulation scheme |
| CN111486235A (en) * | 2020-05-08 | 2020-08-04 | 凯氟隆（厦门）密封件有限公司 | Ultra-low temperature sealing structure for loading and unloading arm |
-
2012
- 2012-12-07 CN CN201210524768.XA patent/CN103851192A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121438A (en) * | 2014-07-14 | 2014-10-29 | 洛阳能源密封件有限公司 | Soft sealing device provided with grooves in butting surfaces and applied to connecting flange |
| CN104121438B (en) * | 2014-07-14 | 2016-08-17 | 苏州市职业大学 | One is applicable to adpting flange interface and has reeded soft sealer |
| CN104500737A (en) * | 2015-01-06 | 2015-04-08 | 苏州道森阀门有限公司 | Spring type energy storing metal sealing ring |
| CN105546119A (en) * | 2016-02-02 | 2016-05-04 | 天紫环保投资控股有限公司 | High-temperature and high-pressure sliding sealing structure for steam catapult device |
| CN108799498A (en) * | 2017-04-28 | 2018-11-13 | 凯氟隆（厦门）密封件有限公司 | A kind of Novel down-hole tool combinations encapsulation scheme |
| CN111486235A (en) * | 2020-05-08 | 2020-08-04 | 凯氟隆（厦门）密封件有限公司 | Ultra-low temperature sealing structure for loading and unloading arm |
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Application publication date: 20140611 |