CN202851945U - Self-tightening type metal C-shaped sealing ring - Google Patents

Self-tightening type metal C-shaped sealing ring Download PDF

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Publication number
CN202851945U
CN202851945U CN 201220341092 CN201220341092U CN202851945U CN 202851945 U CN202851945 U CN 202851945U CN 201220341092 CN201220341092 CN 201220341092 CN 201220341092 U CN201220341092 U CN 201220341092U CN 202851945 U CN202851945 U CN 202851945U
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CN
China
Prior art keywords
ring
seal ring
metal
sealing
shape
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 - Lifetime
Application number
CN 201220341092
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Chinese (zh)
Inventor
陈茂
叶丽梅
代昌贵
吴成彬
秦兆富
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Chengdu CAIC Electronics Co Ltd
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Chengdu CAIC Electronics Co Ltd
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Publication date
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Priority to CN 201220341092 priority Critical patent/CN202851945U/en
Application granted granted Critical
Publication of CN202851945U publication Critical patent/CN202851945U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a self-tightening type metal C-shaped sealing ring. A sealing ring body is a hollow metal ring sealing ring, a C-shaped opening groove is formed in the circumference of an inner ring, or an outer ring, or the end face of the ring sealing ring, the C-shaped opening groove stretches toward the radial direction or the axial direction, so that a smooth ring elastic ring is formed, wherein the appearance of the smooth ring elastic ring is a ring-shaped opening. The self-tightening type metal C-shaped sealing ring solves the sealing problems that a fluid sealing system is not high-temperature-resisting, high-pressure-resisting and corrosion-resisting, and is suitable for working environment like important sealing systems, such as aviation and an aerospace craft. The working environment is that sealing structure is compact, the size and intensity of a connection part, such as a bolt and a ring flange, are limited, and pre-tightening force is not rich.

Description

Self tightening metal C shape seal ring
Technical field
The utility model relates to a kind of seal element for fluid sealing system.
Background technique
Seal element in the existing fluid sealing system, generally, low medium voltage network can adopt the seal ring of the nonmetallic material of making such as materials such as rubber, teflon, asbestos, but under the harsh operating conditions such as high temperature, high pressure and working environment fluctuation be frequent, no matter on intensity, high temperature resistant, working life, the seal ring of nonmetallic material all will be difficult to guarantee stable, reliable sealing effect, especially rapid wear, perishable, the natural defect that working life is short, very outstanding at high temperature, high pressure, fluid sealing system member.The seal ring that therefore can only adopt metallic material to make, but the seal ring of the more general nonmetallic material of pretightening force of metallic gasket or circle is larger, particularly the link such as bolt, flange plate size, intensity are limited, the working environment that pretightening force is not rich, the leakproofness of its sealing is not as the nonmetallic material seal ring.Because the elasticity extruding force of common metal seal washer is not enough, the elastic deformation amount is little, almost without the ability of automatically regulating thermal expansion and contraction, and be subject to the restriction of some working environment, particularly in the important fluid sealing systems such as Aeronautics and Astronautics aircraft, high temperature, high pressure, the link such as bolt, flange plate size, intensity are limited, and the working environment that pretightening force is not rich is difficult for adopting.
Summary of the invention
The purpose of this utility model is for above-mentioned the deficiencies in the prior art part, provides a kind of sealing reliable, and long service life especially can be applicable to the metal C shape metal o-ring of high temperature, high pressure, fluid sealing system.
The purpose of this utility model can reach by following measures: a kind of self tightening metal C shape seal ring, comprise an O-ring seals body, it is characterized in that, described seal ring body is a hollow metal annulus seal ring, on the circumference of the inner ring of described annulus seal ring or outer ring or end face, open and be shaped with towards radially or the C shape opening slot that axially opens, thus the smooth torus elastomer that to consist of a profile be annular opening.
The utility model technology has following beneficial effect compared to existing technology:
1. metal C shape seal ring is to adopt refractory alloy to make, use at aged, have that (the hollow metal O-ring seals uses at admittedly molten state than hollow metal O-ring seals,) and the better elasticity of other metal washer, good resilience guarantees that seal ring better contacts with flanged surface, can by silver-plated, nickel plating etc., greatly promote sealing and the working life of product to different working environment surfaces.The mounting structure of its seal ring such as Fig. 1, shown in 2,3, when installing not need to the sealing surface of its seal ring more in addition the gasket seal of other soft metal of cushioning strengthen sealing effect.
2. have than hollow metal O-ring seals and the lower pretightening force of other metal washer, pretightening force only has with caliber with about 1/3 of wall thickness hollow metal O-ring seals, reduce the requirement to sealing configuration size, intensity, greatly alleviated the weight of sealing configuration.
3. metal C shape seal ring opening end is unfettered, with increasing of system pressure and temperature, metal C seal ring spare 2 axial (Fig. 4 of the present utility model, Fig. 5) or radially (Fig. 6) opens, Compensating flange separates the seal pressure that causes to be reduced, play the effect of automatic adjusting thermal expansion and contraction, greatly promoted the sealability of system.
4. has good against corrosion and capability of resistance to radiation.By selecting different metallic material and plated surface, cladding material, can be operated under the different serviceability temperatures.
5. long service life.Repeatedly Reusability is crossed and is selected different material thicknesses, can reach the different working pressure of sealing.Reduced user cost.
Metal C seal ring of the present utility model is a kind of seal ring with self-energized seal characteristic, be specially adapted to the sealing configuration compactness, the link such as bolt, flange plate size, intensity are limited, and the working environment that pretightening force is not rich is such as important sealing systems such as Aeronautics and Astronautics aircraft.
Description of drawings
In order further to set forth rather than limit above-mentioned implementation of the present utility model, the utility model is described in further detail below in conjunction with accompanying drawing, but therefore the utility model is not limited among the described scope.All these designs should be considered as content disclosed in the utility model and protection domain.
Fig. 1 is first embodiment's of the utility model self tightening metal C shape seal ring sectional structural map.
Fig. 2 is second embodiment's of the utility model self tightening metal C shape seal ring sectional structural map.
Fig. 3 is the 3rd embodiment's of the utility model self tightening metal C shape seal ring sectional structural map.
Fig. 4 is the use state theory structure schematic representation of Fig. 1.
Fig. 5 is the use state theory structure schematic representation of Fig. 2.
Fig. 6 is the use state theory structure schematic representation of Fig. 3.
Embodiment
In the self tightening metal C shape seal ring that following examples are described, this metal o-ring has an O-ring seals body, the seal ring body is a hollow metal annulus seal ring, seal ring can be processed into three kinds of structure types as Figure 1-3, can be at the inner ring of annulus seal ring, also can be in the outer ring of annulus seal ring, or on the circumference of an end face of annulus seal ring, open and be shaped with towards radially or the C shape opening slot 5 that axially opens, thus the smooth torus elastomer that to consist of a profile be annular opening.Can be processed into and be respectively applied to seal interior pressure, external pressure or axial three kinds of structure type seal rings.Described metal C shape seal ring can adopt refractory alloy to make.By selecting different metallic material and plated surface, cladding material, such as silver-plated, nickel plating.Can be operated under the different serviceability temperatures; By selecting different material thicknesses, can reach the different working pressure of sealing.Described metal C shape seal ring plated surface cladding material is silver-plated or nickel plating.
Embodiment 1
Fig. 1, embodiment illustrated in fig. 4 in.When the system pressure that the annulus seal ring bears is internal pressure, the metal o-ring spare 2 of inner ring radial opening is installed in semiclosed lower flange spare 1 or the totally-enclosed lower flange spare 4, when upper flange spare 3 is tightened with lower flange spare 1 or part 4 usefulness connecting bolts, metal o-ring spare 2 is subject to the elasticity axial compression, the upper and lower end face of metal o-ring spare 2 and upper flange spare 3 and lower flange spare 1 or part 4 contacting points produce plastic deformation, the distortion initial stage is the line contact, thereby sets up initial sealing.When working pressure rose, upper flange spare 3 was disconnected from each other with lower flange spare 1 or part 4, and the C shape opening slot 5 of metal o-ring spare 2 axially opens simultaneously, and compensation is because upper flange spare 3 separates the seal pressure reduction that causes with lower flange spare 1 or part 4; Continuation increase along with working pressure, the C shape opening slot 5 of metal o-ring spare 2 further opens and presses tighter and tighter with upper flange spare 3 and lower flange spare 1 or part 4 contacting points, line contact by the initial stage changes the contact of leptoprosopy band into, thereby reaches the middle high-pressure sealing to system fluid.
Embodiment 2
Fig. 2, embodiment illustrated in fig. 5 in, when the pressure that system bears is external pressure or vacuum system, adopt the metal o-ring 2 of outer ring radial opening.Metal o-ring spare 2 is installed in semiclosed lower flange spare 1 or the totally-enclosed lower flange spare 4, when upper flange spare 3 is tightened with lower flange spare 1 or part 4 usefulness connecting bolts, make metal o-ring spare 2 be subject to the elasticity axial compression, the upper and lower end face of metal o-ring spare 2 and upper flange spare 3 and lower flange spare 1 or part 4 contacting points produce plastic deformation, the distortion initial stage is the line contact, thereby sets up initial sealing.When working pressure rose, upper flange spare 3 was disconnected from each other with lower flange spare 1 or part 4, and the C shape opening slot 5 of this Novel self-tightening type metal o-ring spare 2 axially opens simultaneously, and compensation is because upper flange spare 3 separates the seal pressure reduction that causes with lower flange spare 1 or part 4; Continuation increase along with working pressure, the C shape opening slot 5 of metal o-ring spare 2 further opens and presses tighter and tighter with upper flange spare 3 and lower flange spare 1 or part 4 contacting points, line contact by the initial stage changes the contact of leptoprosopy band into, thereby reaches the middle high-pressure sealing to system fluid.
Embodiment 3
Fig. 3, embodiment illustrated in fig. 6 in, when being axial pressure, adopts the pressure that system bears the metal o-ring spare 2 of end face axial opening, metal o-ring spare 2 is installed in the outer flange piece 1, inner flange spare 3 is pressed into metal o-ring inside, make metal o-ring spare 2 be subject to the resilient radial compression, the both sides of metal o-ring spare 2 and outer flange piece 1 inwall and inner flange spare 3 outer walls produce plastic deformation, and the distortion initial stage is the line contact, thereby sets up initial sealing.When working pressure rose, outer flange piece 1 and inner flange spare 3 radially opened, simultaneously C shape opening slot 5 radial expansions of metal o-ring spare 2, and compensation is because outer flange piece 1 is separated the seal pressure reduction that causes with inner flange spare 3; Along with the continuation of working pressure increases, the C shape opening slot 5 of seal ring further opens and presses tighter and tighter with outer flange piece 1 and inner flange spare 3 contacting points, changes the contact of leptoprosopy band into by the line contact at initial stage, thereby reaches the middle high-pressure sealing to system fluid.

Claims (4)

1. self tightening metal C shape seal ring, comprise an O-ring seals body, it is characterized in that, described seal ring body is a hollow metal annulus seal ring, on the circumference of the inner ring of described annulus seal ring or outer ring or end face, open and be shaped with towards radially or the C shape opening slot that axially opens, thus the smooth torus elastomer that to consist of a profile be annular opening.
2. self tightening metal C shape seal ring as claimed in claim 1 is characterized in that, described metal C shape seal ring adopts refractory alloy to make.
3. self tightening metal C shape seal ring as claimed in claim 1 is characterized in that, described metal C shape seal ring plated surface cladding material is silver-plated or nickel plating.
4. self tightening metal C shape seal ring as claimed in claim 1 is characterized in that, described metal C shape seal ring can be processed into the seal ring that is respectively applied to seal interior pressure, external pressure or axial three kinds of structure types.
CN 201220341092 2012-07-16 2012-07-16 Self-tightening type metal C-shaped sealing ring Expired - Lifetime CN202851945U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220341092 CN202851945U (en) 2012-07-16 2012-07-16 Self-tightening type metal C-shaped sealing ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220341092 CN202851945U (en) 2012-07-16 2012-07-16 Self-tightening type metal C-shaped sealing ring

Publications (1)

Publication Number Publication Date
CN202851945U true CN202851945U (en) 2013-04-03

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103498936A (en) * 2013-10-10 2014-01-08 河南柴油机重工有限责任公司 Partial sealing device and sealing method under high-temperature large-area contact condition
CN104089036A (en) * 2014-07-02 2014-10-08 普胜特能源(广汉)服务有限公司 Gate valve applicable to high temperature, high pressure, high sand contents and highly-corrosive mediums
CN106286831A (en) * 2016-09-28 2017-01-04 中国科学院光电研究院 Elastic metallic rectangular seal device in a kind of vacuum environment and encapsulating method
CN106439020A (en) * 2016-09-28 2017-02-22 中国科学院光电研究院 Rectangular sealing device in vacuum environment and sealing method
CN106994009A (en) * 2017-05-25 2017-08-01 东莞合安机电有限公司 A kind of sphygmomanometer
CN107100997A (en) * 2017-07-03 2017-08-29 广汉川油井控装备有限公司 Lip-type packing and its plug valve
CN107131369A (en) * 2017-05-25 2017-09-05 东莞合安机电有限公司 A kind of air pressure plug
CN112334689A (en) * 2018-06-14 2021-02-05 福斯管理公司 Mechanical seal with high pressure high temperature auxiliary seal
CN112524364A (en) * 2020-12-11 2021-03-19 西安航天动力研究所 Spring energy storage sealing structure for planar flange and matching installation method
CN113187972A (en) * 2021-05-20 2021-07-30 中国科学院合肥物质科学研究院 Large-caliber structure sealing ring suitable for high and low temperatures and sealing structure

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103498936A (en) * 2013-10-10 2014-01-08 河南柴油机重工有限责任公司 Partial sealing device and sealing method under high-temperature large-area contact condition
CN103498936B (en) * 2013-10-10 2016-07-06 河南柴油机重工有限责任公司 Partially sealed device under a kind of high temperature bump contact and encapsulating method
CN104089036A (en) * 2014-07-02 2014-10-08 普胜特能源(广汉)服务有限公司 Gate valve applicable to high temperature, high pressure, high sand contents and highly-corrosive mediums
CN106439020B (en) * 2016-09-28 2018-10-02 中国科学院光电研究院 Rectangular seal device and encapsulating method in a kind of vacuum environment
CN106439020A (en) * 2016-09-28 2017-02-22 中国科学院光电研究院 Rectangular sealing device in vacuum environment and sealing method
CN106286831B (en) * 2016-09-28 2018-07-03 中国科学院光电研究院 Elastic metallic rectangular seal device and encapsulating method in a kind of vacuum environment
CN106286831A (en) * 2016-09-28 2017-01-04 中国科学院光电研究院 Elastic metallic rectangular seal device in a kind of vacuum environment and encapsulating method
CN106994009A (en) * 2017-05-25 2017-08-01 东莞合安机电有限公司 A kind of sphygmomanometer
CN107131369A (en) * 2017-05-25 2017-09-05 东莞合安机电有限公司 A kind of air pressure plug
CN107100997A (en) * 2017-07-03 2017-08-29 广汉川油井控装备有限公司 Lip-type packing and its plug valve
CN112334689A (en) * 2018-06-14 2021-02-05 福斯管理公司 Mechanical seal with high pressure high temperature auxiliary seal
CN112524364A (en) * 2020-12-11 2021-03-19 西安航天动力研究所 Spring energy storage sealing structure for planar flange and matching installation method
CN113187972A (en) * 2021-05-20 2021-07-30 中国科学院合肥物质科学研究院 Large-caliber structure sealing ring suitable for high and low temperatures and sealing structure

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Granted publication date: 20130403