CN201162820Y - Elastic sealing ring - Google Patents
Elastic sealing ring Download PDFInfo
- Publication number
- CN201162820Y CN201162820Y CNU2008200624128U CN200820062412U CN201162820Y CN 201162820 Y CN201162820 Y CN 201162820Y CN U2008200624128 U CNU2008200624128 U CN U2008200624128U CN 200820062412 U CN200820062412 U CN 200820062412U CN 201162820 Y CN201162820 Y CN 201162820Y
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- China
- Prior art keywords
- sealing
- slit
- circle body
- seal ring
- ring
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- 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
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Abstract
The utility model relates to an elastic sealing ring. The upper and the lower of the inner loop surface of a sealing ring body are respectively distributed with a gap extending along the circumferential direction; a gas vent communicated with the inner loop surface is arranged between the upper gap and the lower gap; the section of the sealing ring in the inner loop surface of the ring body is shaped as an E; half-O-shaped bulges integrally connected with the ring body are respectively arranged between an upper working surface and a lower working surface of the ring body and between the corresponding upper gap and lower gap. The sealing ring of the utility model has dual performance of press sealing and active sealing and can generate a second sealing for compensation when the press sealing is invalid owing to abnormal sealing connection that does not meet the designed sealing condition, thereby ensuring the sealing structure to have larger redundancy and improving the reliability. The elastic sealing ring can not only be used in both the novel self-sealing flange and the existing flange, but also used as the sealing ring hermetically coupled with the pressure gas pipeline except flanged joints.
Description
Technical field
The utility model 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.
The model utility content
The purpose of this utility model is: provide a kind of rational in infrastructure, easy to use, cost is low, the reliable sealing elastic seal ring.
The purpose of this utility model realizes by implementing following technical proposals:
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 the utility model embodiment stereogram.
Fig. 2 is Figure 1A-A sectional view.
Fig. 3 is the utility model user mode schematic representation.
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
Below in conjunction with accompanying drawing the utility model is described in further detail, but this should be interpreted as that the scope of above-mentioned theme of the present utility model 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 utility model, 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 |
|---|---|---|---|
| CNU2008200624128U CN201162820Y (en) | 2008-03-10 | 2008-03-10 | Elastic sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200624128U CN201162820Y (en) | 2008-03-10 | 2008-03-10 | Elastic sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201162820Y true CN201162820Y (en) | 2008-12-10 |
Family
ID=40183757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200624128U Expired - Lifetime CN201162820Y (en) | 2008-03-10 | 2008-03-10 | Elastic sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201162820Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315146A (en) * | 2014-10-17 | 2015-01-28 | 北京三兴汽车有限公司 | Novel firefighting interface sealing ring |
| CN110332354A (en) * | 2019-07-22 | 2019-10-15 | 瑞纳智能设备股份有限公司 | A kind of head seal structure |
| CN111720643A (en) * | 2020-06-30 | 2020-09-29 | 东风汽车股份有限公司 | Partition wall type quick connector assembly |
-
2008
- 2008-03-10 CN CNU2008200624128U patent/CN201162820Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315146A (en) * | 2014-10-17 | 2015-01-28 | 北京三兴汽车有限公司 | Novel firefighting interface sealing ring |
| CN110332354A (en) * | 2019-07-22 | 2019-10-15 | 瑞纳智能设备股份有限公司 | A kind of head seal structure |
| CN111720643A (en) * | 2020-06-30 | 2020-09-29 | 东风汽车股份有限公司 | Partition wall type quick connector assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081210 |
|
| CX01 | Expiry of patent term |