CN102494133A - Seal ring - Google Patents
Seal ring Download PDFInfo
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- CN102494133A CN102494133A CN2011103880457A CN201110388045A CN102494133A CN 102494133 A CN102494133 A CN 102494133A CN 2011103880457 A CN2011103880457 A CN 2011103880457A CN 201110388045 A CN201110388045 A CN 201110388045A CN 102494133 A CN102494133 A CN 102494133A
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- sealing
- outer ring
- seal ring
- ring surface
- seal
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Abstract
The invention discloses a seal ring, which comprises a ring body. A gap extending along the circumference direction is arranged on the inner side of the ring body, two circumferential sides of the gap form a large outer ring face and a small outer ring face respectively, and the radial width of the large outer ring face is larger than that of the small outer ring face. The seal ring has pressure sealing performance and active sealing performance. When abnormal situations occur in sealing connection and designed sealing conditions are not met to enable normal pressure sealing to be invalid, the seal ring can compensate, generate secondary sealing and enable a sealing structure to have large 'redundancy', thereby improving reliability. Even if other structural parts cannot exert design functions, a sealing function of an originally-designed rectangular ring body can be kept. The rectangular seal ring replaces an existing flange completely, and is reasonable in structure, convenient to use and low in cost, can be used for a novel seal flange and the existing flange, and can be used for sealing connection of a pressure gas pipeline except a flange connector.
Description
Technical field
The present invention relates to a kind of seal ring.
Background technique
The structural type of flanged joint is of all kinds, and most joints are all guaranteeing that sealing configuration satisfies " passive " sealing under design and manufacturing, the maintenance requirement prerequisite, promptly must keep joint inner seal ring essential compressibility down in working order.In case because of installation question or the loosening compressibility that causes is installed reduces, the joint sealing effect will reduce, for maximum airtight of sealing difficulty, this phenomenon is more remarkable.In case in use joint sealing lost efficacy; Will cause leakage; Like its air damping piping of railway freight-car of moving on China's circuit owing to, sew ubiquity, particularly at the cold area of China in the influence of installing and using aspect such as maintenance; Be insurmountable for a long time problem, had a strong impact on safety of railway traffic.
Number of patent application is 200820062412.8, and notification number is CN201162820Y, and the day for announcing is on December 10th, 2008; Name is called " elastic seal ring " and discloses a kind of seal ring; It comprises circle body, and the circle body inboard is provided with the slit of extending circumferentially, and the cross section is " E " shape.The shortcoming of present technique scheme is: when installation conditions meets design requirement; " E " shape seal ring is packed into behind the flange corresponding site, because fittings body is to be rigidly connected, makes seal ring be compacted; " E " shape circle is compressed, and shape has become " rectangle " rubber gasket.Deform because of installation question, flange body or clamping bolt is loosening causes installing when producing the gap at the sealing dual face; Pressed gas gets between the two fittings body gaps; And can not get into vent slot; Therefore pressure air can only be exerted pressure to upper lip, makes seal ring and fittings body produce the slit and produces a large amount of leakages, this shows that causing leakage mainly is that design irrationality owing to seal ring and fittings body causes.
Summary of the invention
The objective of the invention is provides a kind of seal ring for overcoming the deficiency of above-mentioned existing technology, rational in infrastructure, easy to use, cost is low, the reliable sealing seal ring.
For realizing above-mentioned purpose, the present invention adopts following technical proposals:
A kind of seal ring, said seal ring comprises circle body, and the inboard of circle body is provided with the slit along extending circumferentially, and the circumferential both sides in slit form big outer ring surface and little outer ring surface respectively, and the radial width of big outer ring surface is greater than the radial width of little outer ring surface.
Also be provided with inner ring surface between the big outer ring surface of said seal ring and the little outer ring surface; Inner ring surface is divided into two-part up and down with the slit in the circle body, and the sectional shape of seal ring is
shape.
Said inner ring surface is provided with and is communicated with the gas guide groove in two-part slit up and down.
Width>=the 1.5mm of said gas guide groove, groove depth≤1.5mm.The width 1.5-2mm of preferred gas guide groove, groove depth≤1.5mm.
Said inner ring surface equates with the radial width of little outer ring surface.
Wall thickness＞the 1mm of said little outer ring surface.The wall thickness 1-1.5mm of preferred little outer ring surface.
Wall thickness >=the 2mm of said big outer ring surface.The wall thickness 2-3mm of preferred big outer ring surface.
Said width≤the 1mm in two-part slit up and down.The preferred width 0.5-1mm in two-part slit up and down.
This seal ring is particularly useful for following flanged joint:
Flanged joint, it comprises two fittings bodies, two flange bodies; Said two its end faces of fittings body relatively, axially the centre has circular port, the excircle direction is established boss; And this boss is near its end face separately; Be provided with annular groove between two fittings bodies; Seal ring is installed in the annular groove, and said two its end faces of flange body are relative, the centre has circular hole, are provided with the annular slot that matches with said boss in the circular hole; The boss of two fittings bodies is stuck in the draw-in groove of two flange bodies, and two flange bodies are fixed together through link, it is characterized in that, said fittings body is provided with several vent slots that is communicated with circular port and annular groove.
Said annular groove is located on the end face of one of them fittings body.
Said vent slot is equally distributed 4, and adjacent two vent slots become into 90 °.
Said link is the screw bolt and nut that is used for fixing two flange bodies.
The sealing circle is installed in the annular groove, and the slit is towards circular port, and the extension of big outer ring surface is between the end face of two fittings bodies.
The radial width of said big outer ring surface equates with the radial width of fittings body opposing end surface.
When 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, promptly when the slit appears in working surface when, the phenomenon that will occur leaking out at this moment; When leaking out; Owing to inner side surface (with reference to the A face shown in Figure 9) blast of big outer ring surface is constant, outer side surface (with reference to B face among the figure 9) blast of big outer ring surface reduces, thereby makes the big outer ring surface of seal ring move formation selfsealings effects (with reference to Figure 10) to the fittings body end face of big outer ring surface outer side surface.
Adopt the flanged joint of seal ring of the present invention, its seal ring has the sealing of pressure amount and initiatively seals 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; Compensate, produce second road sealing, make sealing configuration have that big " redundancy " has improved reliability; Even can not better bring into play under the situation of design function at other structure divisions, still can keep the sealing function of former design rectangle circle body; Exchange fully with rectangular seal with existing flange, rational in infrastructure, easy to use, cost is low, both can adorn to 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.
The invention has the beneficial effects as follows, adopt the flanged joint of seal ring to have many known solutions parts in the past that are superior to.Adopt modern equipment, be easy to make the desired vertical flanges of joint.And the joint sealing dual face deform or fastening piece loosening, when producing undesired sealing, under the pressure of sealing gas, sealing layer takes place to expand deformation, forms new sealing at the sealing off gap position, thus realization automatic compensation sealing effect.
Description of drawings
Fig. 1 is a user mode structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 adopts the three-dimensional of the fittings body I of seal ring of the present invention partly to cut open structural drawing;
Fig. 4 adopts the three-dimensional of the fittings body II of seal ring of the present invention partly to cut open structural drawing;
Fig. 5 is the tomograph of rubber seal of the present invention;
Fig. 6 is the B-B sectional view of Fig. 5;
Fig. 7 is the tomograph that adopts the flange body of seal ring of the present invention;
Fig. 8 is the gapped view of Fig. 2 working surface;
Fig. 9 is Fig. 8 K portion enlarged view;
Figure 10 is Fig. 9 automatic compensation sealing design sketch.
Wherein: 1. fittings body I, 2. flange body, 3. rubber seal, 4. fittings body II, 5. vent slot, 6. little outer ring surface, 7. inner ring surface, 8. gas guide groove, 9. big outer ring surface, 10. circle body.
Embodiment
Below in conjunction with accompanying drawing the present invention is made further detailed description, but should this be interpreted as that the scope of above-mentioned theme of the present invention only limits to following embodiment.
Form by circle body 10, big outer ring surface 9, little outer ring surface 6, inner ring surface 7 and gas guide groove 8 like Fig. 5, rubber seal shown in Figure 63.The inboard of circle body 10 is provided with the slit along extending circumferentially, and the circumferential both sides in slit form big outer ring surface 9 and little outer ring surface 6 respectively, and the radial width of big outer ring surface 9 is greater than the radial width of little outer ring surface 6; Said rubber seal 3 is installed in the annular groove on the flanged joint (flanged joint that the present embodiment seal ring is suitable for is seen like Fig. 1, shown in Figure 2), and the slit is towards circular port, and the extension of big outer ring surface 9 is between the end face of two fittings bodies.Also be provided with inner ring surface 7 between the big outer ring surface 9 of said rubber seal 3 and the little outer ring surface 6; Inner ring surface 7 is divided into two-part up and down with the slit in the circle body 10, and the sectional shape of rubber seal 3 is
shape.Inner ring surface 7 is provided with and is communicated with the gas guide groove 8 in two-part slit up and down.The width of gas guide groove 8 is 1.5mm, and groove depth is 1.5mm.The radial width of big outer ring surface 9 equates that with the radial width of fittings body opposing end surface said inner ring surface 7 equates with the radial width of little outer ring surface 6.The wall thickness of little outer ring surface 6 is 1mm, and the wall thickness of big outer ring surface 9 is 2mm, and the width in two-part slit is 1mm up and down.
The main purpose of big outer ring surface 9, little outer ring surface 6 and circle body 10 is after installation, to play sealing gas; Use this rubber seal 3 can strengthen the sealing surface of flanged joint sealing; The purpose of gas guide groove 8 is that the gas in the inner ring surface 7 two latasuture cracks is carried, and reaches rubber seal 3 sealing effect of compensation automatically through gas pressure.
Its structure of flanged joint that the present embodiment seal ring is suitable for and following with mounting type, the action principle of seal ring:
Like Fig. 1, shown in Figure 2, flanged joint comprises two fittings bodies: be respectively fittings body I 1 and fittings body II4, the bolt and nut of two flange bodies 2, seal ring (being rubber seal 3) and fixing two flange bodies 2.
As shown in Figure 3, fittings body I1: have circular port axially, the excircle direction is established boss, and this boss is near its end face separately, the fittings body opposing end faces is smooth plane; The axially middle inboard away from its end face of circular port is provided with the groove that is used for pipe laying, makes circular port section vertically form the boss shape.The excircle direction of fittings body is processed into the double polarizing keys shape.
As shown in Figure 4, fittings body II4: have circular port axially, the excircle direction is established boss, and this boss is near its end face separately, the fittings body opposing end faces is smooth plane; The axially middle inboard away from its end face of circular port is provided with the groove that is used for pipe laying, makes circular port section vertically form the boss shape.The excircle direction of fittings body is processed into the double polarizing keys shape.The end face of fittings body II4 is provided with annular groove, and seal ring is installed in the annular groove, also is provided with several on the fittings body II4 and is communicated with circular port and the vent slot 5 of annular groove on fittings body II4.Fittings body II4 as shown in Figure 4 upper-end surface offers four vent slots 5 and fills wind to make things convenient for gas through the slit of vent slot 5 in rubber seal 3.Become 90 ° of angles between adjacent two vent slots 5 of four vent slots 5.
As shown in Figure 7, said flange body 2 has three circular holes for connecting the structural member of two fittings bodies, and middle circular hole is for passing through fittings body, and all the other two holes are for to come the circular hole of fastening body and rubber seal 3 through bolt.
Flanged joint assembling back two flange bodies, 2 end faces relatively, fit tightly; Fittings body I1, its end face of fittings body II4 are relative; Fittings body I1, fittings body II4 and rubber seal 3 are arranged between two flange bodies 2, and the boss through two fittings bodies is stuck in the draw-in groove of two flange bodies 2, and the big outer ring surface 9 of rubber seal 3 and two fittings body end faces fit tightly; And place between the both ends of the surface, little outer ring surface 6 fits tightly with the concave surface of fittings body II4; Thereby realize good sealing effect.
Like Fig. 8, shown in Figure 9,, do not satisfy the design air-proof condition and when making positive normal pressure amount seal failure when occurring unusually being tightly connected; Promptly when the slit appears in working surface; The phenomenon that will occur leaking out this moment is when leaking out, because A face blast is constant; B face blast reduces, and forms selfsealings effect shown in figure 10 thereby make the big outer ring surface 9 of rubber seal 3 move to fittings body I1 end face.
Adopt flanged joint of the present invention, its fittings body II4 can well play the good result to slit inflation in the rubber seal 3.
Adopt flanged joint of the present invention, its rubber seal 3 has the sealing of pressure amount and initiatively seals 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; Compensate, produce second road sealing, make sealing configuration have that big " redundancy " has improved reliability; Even can not better bring into play under the situation of design function at other structure divisions, still can keep the sealing function of former design rectangle circle body; Exchange fully with rectangular seal with existing flange, rational in infrastructure, easy to use, cost is low, both can adorn to 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 (8)
1. seal ring, said seal ring comprises circle body, and the inboard of circle body is provided with the slit along extending circumferentially, it is characterized in that, and the circumferential both sides in slit form big outer ring surface and little outer ring surface respectively, and the radial width of big outer ring surface is greater than the radial width of little outer ring surface.
2. seal ring as claimed in claim 1; It is characterized in that; Also be provided with inner ring surface between the big outer ring surface of said seal ring and the little outer ring surface; Inner ring surface is divided into two-part up and down with the slit in the circle body, and the sectional shape of seal ring is
shape.
3. seal ring as claimed in claim 2 is characterized in that, said inner ring surface is provided with and is communicated with the gas guide groove in two-part slit up and down.
4. seal ring as claimed in claim 3 is characterized in that, the width>=1.5mm of said gas guide groove, groove depth≤1.5mm.
5. seal ring as claimed in claim 2 is characterized in that, said inner ring surface equates with the radial width of little outer ring surface.
6. seal ring as claimed in claim 1 is characterized in that, the wall thickness >=1mm of said little outer ring surface.
7. seal ring as claimed in claim 1 is characterized in that, the wall thickness >=2mm of said big outer ring surface.
8. seal ring as claimed in claim 2 is characterized in that, the said width≤1mm in two-part slit up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110388045.7A CN102494133B (en) | 2011-11-29 | 2011-11-29 | Seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110388045.7A CN102494133B (en) | 2011-11-29 | 2011-11-29 | Seal ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102494133A true CN102494133A (en) | 2012-06-13 |
| CN102494133B CN102494133B (en) | 2014-11-26 |
Family
ID=46185980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110388045.7A Active CN102494133B (en) | 2011-11-29 | 2011-11-29 | Seal ring |
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| CN (1) | CN102494133B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438213A (en) * | 2013-08-22 | 2013-12-11 | 上海清河机械有限公司 | Sealing piece structure |
| CN106499892A (en) * | 2016-12-07 | 2017-03-15 | 平安煤炭开采工程技术研究院有限责任公司 | Positive pressure type pipeline sealing device |
| CN106499891A (en) * | 2016-12-05 | 2017-03-15 | 平安煤炭开采工程技术研究院有限责任公司 | Sealing ring and negative-pressure pipeline |
| CN106594449A (en) * | 2017-02-27 | 2017-04-26 | 中国工程物理研究院总体工程研究所 | Air inflation sealing device for large-diameter pipeline |
| CN108626493A (en) * | 2018-05-08 | 2018-10-09 | 徐州东鑫铸造有限公司 | A kind of sealing ring |
| CN108708974A (en) * | 2015-12-21 | 2018-10-26 | 海信容声(广东)冰箱有限公司 | Water dispenser and refrigerator built in a kind of seal washer, refrigerator |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438213A (en) * | 2013-08-22 | 2013-12-11 | 上海清河机械有限公司 | Sealing piece structure |
| CN108708974A (en) * | 2015-12-21 | 2018-10-26 | 海信容声(广东)冰箱有限公司 | Water dispenser and refrigerator built in a kind of seal washer, refrigerator |
| CN106499891A (en) * | 2016-12-05 | 2017-03-15 | 平安煤炭开采工程技术研究院有限责任公司 | Sealing ring and negative-pressure pipeline |
| CN106499892A (en) * | 2016-12-07 | 2017-03-15 | 平安煤炭开采工程技术研究院有限责任公司 | Positive pressure type pipeline sealing device |
| CN106499892B (en) * | 2016-12-07 | 2018-11-02 | 平安煤炭开采工程技术研究院有限责任公司 | Positive pressure type pipeline sealing device |
| CN106594449A (en) * | 2017-02-27 | 2017-04-26 | 中国工程物理研究院总体工程研究所 | Air inflation sealing device for large-diameter pipeline |
| CN106594449B (en) * | 2017-02-27 | 2018-08-21 | 中国工程物理研究院总体工程研究所 | Air inflation sealing device for large diameter pipeline |
| CN108626493A (en) * | 2018-05-08 | 2018-10-09 | 徐州东鑫铸造有限公司 | A kind of sealing ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102494133B (en) | 2014-11-26 |
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Address after: Huai Village Street Huaiyin District of Ji'nan city of Shandong Province, No. 73 250022 Patentee after: Shandong Zhongche Locomotive Co. Ltd. Address before: Huai Village Street Huaiyin District of Ji'nan city of Shandong Province, No. 73 250022 Patentee before: Jinan Rail Traffic Equipment Co., Ltd. |