CN101303097A - Elastic seal ring - Google Patents
Elastic seal ring Download PDFInfo
- Publication number
- CN101303097A CN101303097A CNA2008100444651A CN200810044465A CN101303097A CN 101303097 A CN101303097 A CN 101303097A CN A2008100444651 A CNA2008100444651 A CN A2008100444651A CN 200810044465 A CN200810044465 A CN 200810044465A CN 101303097 A CN101303097 A CN 101303097A
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- sealing
- seal ring
- slit
- elastic seal
- circle body
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Abstract
The invention relates to an elastic seal ring, the top and the bottom of the inner ring surface of which are respectively distributed with an aperture extending along circumferential direction; an air conducting groove for communication is arranged between the top aperture and the bottom aperture; the section of the inner ring surface of the seal ring is E-shaped; a semi-O-shaped convex integrated with the ring body is arranged between the top and the bottom working surfaces of the ring body and the corresponding top and bottom apertures. The seal ring adopted by the invention has double functions of gauging sealing and active sealing, which can compensate to cause a second sealing when the situation that gauging sealing is failed for abnormal sealing conditions which do not meet the design appear, so as to ensure that the sealing structure has larger 'redundancy' and enhanced reliability; therefore, the seal ring can be installed and used in a novel self-sealing flange and existing flanges and can also be used as the seal ring of pressure air pipe sealing and connecting except a flange joint and is characterized by reasonable structure, convenient use, low cost and reliable sealing.
Description
Technical field
The present invention relates to a kind of elastic seal ring, especially the elastic seal ring of pressed gas line seal connection.
Background technique
The structural type of seal ring is of all kinds, and the sealing of existing flanged joint is in it connects, and by what realize under certain compressibility compressing rubber seal ring condition sealing, is a kind of static seal, and the seal ring sectional shape is a rectangle; Rubber material down, has viscoelastic dual characteristics in working order, and its mechanical behavior is similar to full-bodied fluid, sealing load can be delivered to the material surface that is in contact with it.Most static sealings are all guaranteeing that sealing configuration satisfies " passive " sealing under design and manufacturing, the maintenance requirement prerequisite, promptly must keep seal ring essential compressibility down in working order.In case because of installation question or the loosening compressibility that causes is installed reduces, sealing effect will reduce, airtight for the sealing difficulty maximum, this phenomenon is more remarkable.In case seal failure in use, will cause leakage, as its air damping piping of railway freight-car of moving on China's circuit because in the influence of installing and using aspect such as maintenance, sew ubiquity, particularly at the cold area of China, be insurmountable for a long time problem, had a strong impact on safety of railway traffic.
Summary of the invention
The objective of the invention is: provide a kind of rational in infrastructure, easy to use, cost is low, the reliable sealing elastic seal ring.
The objective of the invention is to realize by enforcement following technical proposals Come:
A kind of elastic seal ring comprises circle body, it is characterized in that, the inner ring surface of described circle body is provided with the slit along extending circumferentially.
The inner ring surface of circle body respectively is distributed with a slit along extending circumferentially up and down, and the seal ring sectional shape is " E " tee section.
Width≤the 1mm in described slit, the wall thickness 〉=1mm of slit and circle body outer ring surface.
The gas guide groove that connects with slit up and down is set between the slit up and down.
Width≤the 3mm of described gas guide groove, groove depth≤1.5mm.
Be provided with the projection that links to each other with the circle body one between the working surface of circle body and the slit.
The working surface up and down of circle body and the corresponding projection that links to each other with the circle body one that is respectively arranged with between the slit up and down.
Described projection is " half O type " shape.
Height≤the 1mm of described projection.
Adopt the elastic seal ring of above structure, be provided with a slit, form the lip seal layer along extending circumferentially at the inner ring surface of circle body, when installation conditions meets design requirement, press also in lips side seam crack, and circle body is compressed, and shape and seal action are with existing rectangular rubber seal washer.The sealing dual face deform or fastening piece loosening, when producing undesired sealing, under the pressure of sealing gas, the lip seal layer takes place to expand deformation, forms new sealing at the sealing off gap position, thus realization automatic compensation sealing effect; Especially in the inner ring surface slit along extending circumferentially that respectively distributes up and down, the two-sided design of lip sealing layer can be avoided the seal failure that causes because of the mistake assembling up and down.In working order down, elastic seal ring by compression, radially can become big, thereby can produce the center sealed pipe and necessarily hold power tightly, in this case, sealed gas can not import to position, lower floor lip limit preferably, the gas guide groove of up/down perforation, guarantee that air enters the lip seal layer of circle body bottom from last lip sealing layer, the seal action that lower lip is brought into normal play prevents to sew.Between the working surface of circle body and the slit especially up and down working surface and up and down " the half O type " projection between the slit be lip limit sealing compensation structure, rising further to the seal action of lip seal layer, " redundancy " compensates.Under normal air-proof condition, the gap of compensation lip limit and circle body working surface makes the lip limit play the effect of a round section joint ring in parallel, and has played the effect of stiffening rib, has further improved the rigidity on lip limit, the flange that can prevent the lip limit with chew.
Description of drawings
Fig. 1 is an embodiment of the invention stereogram.
Fig. 2 is Figure 1A-A sectional view.
Fig. 3 is a user mode schematic representation of the present invention.
Fig. 4 is the gapped view of Fig. 3 working surface.
Fig. 5 is Fig. 4 B portion enlarged view
Mark among the figure: 1 time lip sealing layer, lip sealing layer on 2,3 gas guide grooves, 4 circle bodies, 5 half O shape projectioies, 6 working surfaces, 7 seal rings, 8 flanges, 9 gaps.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing, but this should be interpreted as that the scope of above-mentioned theme of the present invention only limits to following embodiment.
As shown in Figure 1, 2: elastic seal ring is an O shape rubber seal, the inner ring surface of sealing circle body 4 respectively is distributed with a slit along extending circumferentially up and down, the distance of slit and circle body outer ring surface is 1.8mm, wide 0.5mm, guarantee the enough intensity of elastic seal ring, the slit forms two lip seal layers (1,2) up and down, and its sectional shape is " E " tee section.The gas guide groove that is provided with between the slit up and down 3 slit up and down connects, and the air of guaranteeing to enter the lip sealing layer can enter the lip seal layer of circle body bottom, and gas guide groove is of a size of wide 1.5mm, groove depth 0.5mm.Seal ring is working surface 6 and the corresponding respectively projection 5 that is provided with " half an O type " that links to each other with the circle body one between the lip sealing layer up and down up and down, formation sealing compensation structure, and protruding height is 0.5mm.
As shown in Figure 3, with " E " shape seal ring 7 flange 8 corresponding sites of packing into, the flange construction bolt is tightened.When installation conditions met design requirement, " E " shape circle was compressed, and shape is with existing " rectangle " rubber gasket.
Shown in Fig. 4,5, with " E " shape seal ring 7 flange 8 corresponding sites of packing into, deform because of installation question, flange body or clamping bolt is loosening causes installing when producing gap 9 at the sealing dual face, pressed gas enters the upper lip slit and enters the lower lip slit through gas guide groove, and open on two lip limits up and down, under the pressure of sealing gas, the lip sealing layer (1 up and down, 2) expansion deformation taking place, forms new sealing at the sealing off gap position, thereby realize automatic compensation effect; Two-sided design simultaneously can also be avoided assembling the seal failure that causes because of mistake." the half O type " that link to each other with the circle body one projection 5 that is provided with between the working surface up and down of circle body and the upperlip side seam crack, further " redundancy " that played lip seal layer seal action compensates.When compensation sealing, combine the round section joint ring structure to sealing antithesis surface of contact requirement features of smaller; Played the effect of stiffening rib, further improved the rigidity on lip limit, can prevent the lip limit flange and chew; And under normal air-proof condition, the gap of compensation lip limit and circle body working surface makes the lip limit play the effect of a round section joint ring in parallel.
Adopt elastic seal ring of the present invention, have the sealing of pressure amount and initiatively seal dual performance, can be unusual in the appearance that is tightly connected, do not satisfy the design air-proof condition and when making positive normal pressure amount seal failure, compensated, produce the sealing of second road, make sealing configuration have big " redundancy ", improved reliability,, still can keep the sealing function of former design rectangle circle body even can not better bring into play under the situation of design function at other structure divisions.Exchange fully with rectangular seal with existing flange, rational in infrastructure, easy to use, cost is low.Both can adorn and be used for novel selfsealings flange and existing flange, also can be used for the seal ring that the pressed gas line seal except that the flange joint connects.
Claims (9)
1, a kind of elastic seal ring comprises circle body, it is characterized in that, the inner ring surface of described circle body is provided with the slit along extending circumferentially.
2, elastic seal ring as claimed in claim 1 is characterized in that, the inner ring surface of circle body respectively is distributed with a slit along extending circumferentially up and down, and the seal ring sectional shape is " E " tee section.
3, elastic seal ring as claimed in claim 2 is characterized in that, the width≤1mm in described slit, the wall thickness 〉=1mm of slit and circle body outer ring surface.
4, as claim 2 or 3 described elastic seal rings, it is characterized in that, the gas guide groove that connects with slit up and down is set between the slit up and down.
5, elastic seal ring as claimed in claim 4 is characterized in that, the width≤3mm of described gas guide groove, groove depth≤1.5mm.
6, elastic seal ring as claimed in claim 4 is characterized in that, is provided with the projection that links to each other with the circle body one between the working surface of circle body and the slit.
7, elastic seal ring as claimed in claim 5 is characterized in that, the working surface up and down of circle body and the corresponding projection that links to each other with the circle body one that is respectively arranged with between the slit up and down.
As claim 6 or 7 described elastic seal rings, it is characterized in that 8, described projection is " half O type " shape.
9, elastic seal ring as claimed in claim 8 is characterized in that, the height≤1mm of described projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100444651A CN101303097A (en) | 2008-05-28 | 2008-05-28 | Elastic seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100444651A CN101303097A (en) | 2008-05-28 | 2008-05-28 | Elastic seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101303097A true CN101303097A (en) | 2008-11-12 |
Family
ID=40113124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100444651A Pending CN101303097A (en) | 2008-05-28 | 2008-05-28 | Elastic seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101303097A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494133A (en) * | 2011-11-29 | 2012-06-13 | 济南轨道交通装备有限责任公司 | Seal ring |
| CN103388680A (en) * | 2013-07-29 | 2013-11-13 | 慈溪市润鑫电器有限公司 | O-shaped sealing ring for sealing water path |
| CN108626493A (en) * | 2018-05-08 | 2018-10-09 | 徐州东鑫铸造有限公司 | A kind of sealing ring |
| CN115059816A (en) * | 2022-06-02 | 2022-09-16 | 眉山中车制动科技股份有限公司 | Active sealing structure of E-shaped sealing ring and sealing method thereof |
-
2008
- 2008-05-28 CN CNA2008100444651A patent/CN101303097A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494133A (en) * | 2011-11-29 | 2012-06-13 | 济南轨道交通装备有限责任公司 | Seal ring |
| CN102494133B (en) * | 2011-11-29 | 2014-11-26 | 济南轨道交通装备有限责任公司 | Seal ring |
| CN103388680A (en) * | 2013-07-29 | 2013-11-13 | 慈溪市润鑫电器有限公司 | O-shaped sealing ring for sealing water path |
| CN108626493A (en) * | 2018-05-08 | 2018-10-09 | 徐州东鑫铸造有限公司 | A kind of sealing ring |
| CN115059816A (en) * | 2022-06-02 | 2022-09-16 | 眉山中车制动科技股份有限公司 | Active sealing structure of E-shaped sealing ring and sealing method thereof |
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| 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 |
Open date: 20081112 |