CN102494133B - Seal ring - Google Patents
Seal ring Download PDFInfo
- Publication number
- CN102494133B CN102494133B CN201110388045.7A CN201110388045A CN102494133B CN 102494133 B CN102494133 B CN 102494133B CN 201110388045 A CN201110388045 A CN 201110388045A CN 102494133 B CN102494133 B CN 102494133B
- Authority
- CN
- China
- Prior art keywords
- sealing
- outer ring
- ring surface
- seal ring
- seal
- 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.)
- Active
Links
Landscapes
- Gasket Seals (AREA)
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 ensureing that sealing configuration meets " passive " sealing under Design and manufacture, maintenance requirement prerequisite, must keep joint inner seal ring lower essential compressibility in working order.Once because of installation question or the loosening compressibility that causes is installed and reduces, joint sealing effect will reduce, airtight for sealing difficulty maximum, this phenomenon is more remarkable.Once in use joint sealing lost efficacy, will cause leakage, if its air damping piping of the railway freight-car moving on China's circuit is due to the impact installing and using the aspects such as maintenance, sew ubiquity, particularly in the cold area of China, be insurmountable problem for a long time, 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 circle body inner side is provided with the gap of circumferential extension, and cross section is " E " shape.The shortcoming of the technical program is: in the time that installation conditions meets design requirement, " E " shape seal ring packs into after flange corresponding site, because fittings body is to be rigidly connected, seal ring is compacted, " E " shape circle is compressed, and shape has become " rectangle " rubber gasket.Deform or clamping bolt is loosening causes installing while producing gap because of installation question, flange body at sealing dual face, pressed gas enters between two fittings body gaps, and can not enter vent slot, therefore pressure air can only be exerted pressure to upper lip, make seal ring and fittings body produce gap and produce a large amount of leakages, causing as can be seen here leakage is mainly because the design irrationality of seal ring and fittings body causes.
Summary of the invention
The object of the invention is, for overcoming above-mentioned the deficiencies in the prior art, provides a kind of seal ring, rational in infrastructure, easy to use, cost is low, seal reliable seal ring.
For achieving the above object, the present invention adopts following technical proposals:
A kind of seal ring, described seal ring comprises circle body, and the inner side of circle body is provided with the gap of extending along circumferentially, and the circumferential both sides in gap form respectively large outer ring surface and little outer ring surface, and the radial width of large outer ring surface is greater than the radial width of little outer ring surface.
Between the large outer ring surface of described seal ring and little outer ring surface, be also provided with inner ring surface, the gap in circle body is divided into upper and lower two-part by inner ring surface, and the sectional shape of seal ring is
shape.
Described inner ring surface is provided with the gas guide groove that is communicated with upper and lower two-part gap.
Width >=the 1.5mm of described gas guide groove, groove depth≤1.5mm.The preferably width 1.5-2mm of gas guide groove, groove depth≤1.5mm.
Described inner ring surface equates with the radial width of little outer ring surface.
The wall thickness > 1mm of described little outer ring surface.The wall thickness 1-1.5mm of preferred little outer ring surface.
Wall thickness >=the 2mm of described large outer ring surface.The wall thickness 2-3mm of preferably large outer ring surface.
Width≤the 1mm in described upper and lower two-part gap.The width 0.5-1mm in preferably upper and lower two-part gap.
This seal ring is particularly useful for following flanged joint:
Flanged joint, it comprises two fittings bodies, two flange bodies; Described two its end faces of fittings body relatively, axially centre has circular port, excircle direction is established boss, and this boss is near its end face separately, between two fittings bodies, be provided with annular groove, seal ring is installed in annular groove, described two its end faces of flange body are relative, centre has circular hole, are provided with the annular slot matching with described boss in 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 by link, it is characterized in that, described fittings body is provided with several vent slots that is communicated with circular port and annular groove.
Described annular groove is located on the end face of one of them fittings body.
Described vent slot is equally distributed 4, and adjacent two vent slots become in 90 °.
Described link is the screw bolt and nut for fixing two flange bodies.
Sealing circle is arranged in annular groove, and gap is towards circular port, and the extension of large outer ring surface is between the end face of two fittings bodies.
The radial width of described large outer ring surface equates with the radial width of fittings body opposing end surface.
When abnormal in the appearance that is tightly connected, do not meet design air-proof condition and while making positive normal pressure amount seal failure, in the time there is gap in working surface, now just there will be the phenomenon of leaking out, in the time leaking out, because inner side surface (with reference to A face shown in the figure 9) blast of large outer ring surface is constant, outer side surface (with reference to B face in the figure 9) blast of large outer ring surface reduces, thereby makes the large outer ring surface of seal ring move and form selfsealings effects (with reference to Figure 10) to the fittings body end face of large 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 realizing active sealing dual property, can be abnormal in the appearance that is tightly connected, do not meet design air-proof condition and while making positive normal pressure amount seal failure, compensated, produced second sealing, make sealing configuration there is large " redundancy " and improved reliability, even in the situation that other structure divisions can not better be brought into play design function, still can keep the sealing function of former design rectangle circle body; Exchange completely with rectangular seal with existing flange, rational in infrastructure, easy to use, cost is low, both can fill for Novel self sealing flange and existing flange, also can be used for the seal ring that the pressed gas line seal except flanged joint connects.
The invention has the beneficial effects as follows, adopt the flanged joint of seal ring to there are many in the past known scheme parts that are better than.Adopt modern equipment, be easy to manufacture the desired vertical flanges of joint.And joint sealing dual face deform or fastening piece loosening, while producing undesired sealing, under the pressure of sealing gas, sealing layer occurs to expand deformation, forms new sealing, thereby realize automatic compensation sealing effect at sealing off gap position.
Brief description of the drawings
Fig. 1 is use status architecture schematic diagram 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. large outer ring surface, 10. circle body.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, but this should be interpreted as to the scope of above-mentioned theme of the present invention only limits to following embodiment.
Rubber seal 3 is made up of circle body 10, large outer ring surface 9, little outer ring surface 6, inner ring surface 7 and gas guide groove 8 as shown in Figure 5, Figure 6.The inner side of circle body 10 is provided with the gap of extending along circumferentially, and the circumferential both sides in gap form respectively large outer ring surface 9 and little outer ring surface 6, and the radial width of large outer ring surface 9 is greater than the radial width of little outer ring surface 6; Described rubber seal 3 is arranged in the annular groove on flanged joint (the applicable flanged joint of the present embodiment seal ring is shown in as shown in Figure 1 and Figure 2), and gap is towards circular port, and the extension of large outer ring surface 9 is between the end face of two fittings bodies.Between the large outer ring surface 9 of described rubber seal 3 and little outer ring surface 6, be also provided with inner ring surface 7, the gap in circle body 10 is divided into upper and lower two-part by inner ring surface 7, and the sectional shape of rubber seal 3 is
shape.Inner ring surface 7 is provided with the gas guide groove 8 that is communicated with upper and lower two-part gap.The width of gas guide groove 8 is 1.5mm, and groove depth is 1.5mm.The radial width of outer ring surface 9 equates with the radial width of fittings body opposing end surface greatly, and described 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 large outer ring surface 9 is 2mm, and the width in upper and lower two-part gap is 1mm.
The main purpose of large outer ring surface 9, little outer ring surface 6 and circle body 10 is to play afterwards sealing gas in installation, use this rubber seal 3 can strengthen the sealing surface of flanged joint sealing, the object of gas guide groove 8 is that the gas in inner ring surface 7 two latasuture gaps is carried, and reaches the sealing effect of rubber seal 3 auto-compensations by gas pressure.
Its structure of flanged joint that the present embodiment seal ring is applicable and as follows with mounting type, the action principle of seal ring:
As shown in Figure 1 and Figure 2, flanged joint comprises two fittings bodies: be respectively fittings body I 1 and fittings body II4, two flange bodies 2, seal rings (for rubber seal 3) and fix the bolt and nut of two flange bodies 2.
As shown in Figure 3, fittings body I1: have circular port axially, excircle direction is established boss, and this boss is near its end face separately, the end face that fittings body is relative is smooth plane; Circular port is axially middle is provided with the groove for pipe laying away from the inner side of its end face, makes circular port section vertically form boss-shaped.The excircle direction of fittings body is processed into double polarizing keys shape.
As shown in Figure 4, fittings body II4: have circular port axially, excircle direction is established boss, and this boss is near its end face separately, the end face that fittings body is relative is smooth plane; Circular port is axially middle is provided with the groove for pipe laying away from the inner side of its end face, makes circular port section vertically form boss-shaped.The excircle direction of fittings body is processed into double polarizing keys shape.The end face of fittings body II4 is provided with annular groove, and seal ring is arranged in annular groove, is also provided with several and is communicated with circular port on fittings body II4 and the vent slot 5 of annular groove on fittings body II4.Fittings body II4 upper-end surface offers four vent slots 5 to facilitate gas to fill wind by vent slot 5 to the gap in rubber seal 3 as shown in Figure 4.Angle in 90 ° between adjacent two vent slots 5 of four vent slots 5.
As shown in Figure 7, described flange body 2, for connecting the structural member of two fittings bodies, has three circular holes, and middle circular hole is for passing through fittings body, and all the other two holes are the circular hole that comes fastening body and rubber seal 3 by bolt.
After flanged joint assembling two flange body 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, be stuck in by the boss of two fittings bodies in the draw-in groove of two flange bodies 2, the large outer ring surface 9 of rubber seal 3 and two fittings body end faces fit tightly, and be placed between 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.
As shown in Figure 8, Figure 9, when abnormal in the appearance that is tightly connected, do not meet design air-proof condition and while making positive normal pressure amount seal failure, in the time there is gap in working surface, now just there will be the phenomenon of leaking out, in the time leaking out, because A face blast is constant, B face blast reduces, thereby makes the large outer ring surface 9 of rubber seal 3 move the selfsealings effect forming as shown in figure 10 to fittings body I1 end face.
Adopt flanged joint of the present invention, its fittings body II4 can well play the good result to rubber seal 3 interior gap inflation.
Adopt flanged joint of the present invention, its rubber seal 3 has the sealing of pressure amount and realizing active sealing dual property, can be abnormal in the appearance that is tightly connected, do not meet design air-proof condition and while making positive normal pressure amount seal failure, compensated, produced second sealing, make sealing configuration there is large " redundancy " and improved reliability, even in the situation that other structure divisions can not better be brought into play design function, still can keep the sealing function of former design rectangle circle body; Exchange completely with rectangular seal with existing flange, rational in infrastructure, easy to use, cost is low, both can fill for Novel self sealing flange and existing flange, also can be used for the seal ring that the pressed gas line seal except flanged joint connects.
Claims (5)
1. a seal ring, described seal ring comprises circle body, and the inner side of circle body is provided with the gap of extending along circumferentially, it is characterized in that, and the circumferential both sides in gap form respectively large outer ring surface and little outer ring surface, and the radial width of large outer ring surface is greater than the radial width of little outer ring surface;
Between the large outer ring surface of described seal ring and little outer ring surface, be also provided with inner ring surface, the gap in circle body is divided into upper and lower two-part by inner ring surface, and the sectional shape of seal ring is
shape;
Described inner ring surface is provided with the gas guide groove that is communicated with upper and lower two-part gap;
Described inner ring surface equates with the radial width of little outer ring surface.
2. seal ring as claimed in claim 1, is characterized in that, the width >=1.5mm of described gas guide groove, groove depth≤1.5mm.
3. seal ring as claimed in claim 1, is characterized in that, the wall thickness >=1mm of described little outer ring surface.
4. seal ring as claimed in claim 1, is characterized in that, the wall thickness >=2mm of described large outer ring surface.
5. seal ring as claimed in claim 2, is characterized in that, the width≤1mm in described upper and lower two-part gap.
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 CN102494133A (en) | 2012-06-13 |
| CN102494133B true 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102494133B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438213B (en) * | 2013-08-22 | 2016-03-02 | 上海清河机械有限公司 | A kind of seal configuration |
| CN108708974B (en) * | 2015-12-21 | 2020-06-30 | 海信容声(广东)冰箱有限公司 | Sealing washer, built-in water dispenser of refrigerator and refrigerator |
| CN106499891B (en) * | 2016-12-05 | 2018-05-18 | 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 |
| 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 |
| 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 |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2185053A (en) * | 1985-12-17 | 1987-07-08 | Francis Sidney Clark | An access cover frame |
| JPH1122825A (en) * | 1997-05-08 | 1999-01-26 | Daisou:Kk | Gasket |
| CN2801720Y (en) * | 2005-06-03 | 2006-08-02 | 韩平 | Double-sealing metal roller |
| CN2832717Y (en) * | 2005-09-07 | 2006-11-01 | 温国学 | Airproof fresh-keeping box |
| CN101303097A (en) * | 2008-05-28 | 2008-11-12 | 南车眉山车辆有限公司 | Elastic seal ring |
| CN201553469U (en) * | 2009-10-20 | 2010-08-18 | 兖州煤业股份有限公司 | Carrier roller made of urea formaldehyde resin |
| CN201772065U (en) * | 2010-08-20 | 2011-03-23 | 上海市离心机械研究所有限公司 | Sealing ring for bearing seat |
| CN102235399A (en) * | 2010-05-05 | 2011-11-09 | 徐克琼 | Novel structure for hydraulic cylinder |
| CN202521089U (en) * | 2011-11-29 | 2012-11-07 | 济南轨道交通装备有限责任公司 | Seal ring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0834740B2 (en) * | 1987-11-09 | 1996-03-29 | 花王株式会社 | Goods sorting equipment |
-
2011
- 2011-11-29 CN CN201110388045.7A patent/CN102494133B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2185053A (en) * | 1985-12-17 | 1987-07-08 | Francis Sidney Clark | An access cover frame |
| JPH1122825A (en) * | 1997-05-08 | 1999-01-26 | Daisou:Kk | Gasket |
| CN2801720Y (en) * | 2005-06-03 | 2006-08-02 | 韩平 | Double-sealing metal roller |
| CN2832717Y (en) * | 2005-09-07 | 2006-11-01 | 温国学 | Airproof fresh-keeping box |
| CN101303097A (en) * | 2008-05-28 | 2008-11-12 | 南车眉山车辆有限公司 | Elastic seal ring |
| CN201553469U (en) * | 2009-10-20 | 2010-08-18 | 兖州煤业股份有限公司 | Carrier roller made of urea formaldehyde resin |
| CN102235399A (en) * | 2010-05-05 | 2011-11-09 | 徐克琼 | Novel structure for hydraulic cylinder |
| CN201772065U (en) * | 2010-08-20 | 2011-03-23 | 上海市离心机械研究所有限公司 | Sealing ring for bearing seat |
| CN202521089U (en) * | 2011-11-29 | 2012-11-07 | 济南轨道交通装备有限责任公司 | Seal ring |
Non-Patent Citations (2)
| Title |
|---|
| 制动管系用E形双面主动密封法兰密封圈的研制;吕英等;《铁道车辆》;20091010;第47卷(第10期);全文 * |
| 吕英等.制动管系用E形双面主动密封法兰密封圈的研制.《铁道车辆》.2009,第47卷(第10期),全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102494133A (en) | 2012-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102494133B (en) | Seal ring | |
| CN204459547U (en) | A kind of pipeline sealing device | |
| CN201416690Y (en) | Flexible seal device for perforation of conduit tube | |
| CN102494210B (en) | Flange joint | |
| CN202521089U (en) | Seal ring | |
| CN201982841U (en) | Concave-convex annular limiting and sealing structure with flanges | |
| CN101303097A (en) | Elastic seal ring | |
| CN202521088U (en) | Flange joint | |
| CN201748073U (en) | Double flange transmission joint | |
| CN205781565U (en) | A kind of insulating joint | |
| CN201162820Y (en) | Elastic sealing ring | |
| CN104747840A (en) | Seal ring | |
| CN206988623U (en) | A kind of deep basal pit ditch underground pipelines connect head | |
| CN201964068U (en) | Seal ring | |
| CN201757175U (en) | Tapered piece ring sealing device | |
| CN201982652U (en) | Flange gasket | |
| CN208011130U (en) | A kind of coal dust pipe expansion joint sealing structure | |
| CN208519386U (en) | A kind of vacuum-resistant tetrafluoro compensator | |
| CN204004922U (en) | A kind of end-tooth flange | |
| CN201368196Y (en) | Sealing device with air tightness | |
| CN219035881U (en) | Anticreep formula ring flange | |
| CN202901636U (en) | Flexible pipeline expansion joint | |
| CN203202458U (en) | Seal ring for air pipeline connection | |
| CN204372399U (en) | The flange connecting apparatus of hydraulic machinery oil-way system | |
| CN220623105U (en) | Adjustable shockproof flange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
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. |