CN104358873A - Self-tightening type abnormal-angle tooth surface double-cone ring pad - Google Patents
Self-tightening type abnormal-angle tooth surface double-cone ring pad Download PDFInfo
- Publication number
- CN104358873A CN104358873A CN201410594817.6A CN201410594817A CN104358873A CN 104358873 A CN104358873 A CN 104358873A CN 201410594817 A CN201410594817 A CN 201410594817A CN 104358873 A CN104358873 A CN 104358873A
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- China
- Prior art keywords
- flange
- tooth
- ring pad
- different angle
- sealing surface
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- Pending
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- 238000007789 sealing Methods 0.000 claims abstract description 63
- 102000011842 Serrate-Jagged Proteins Human genes 0.000 claims description 14
- 108010036039 Serrate-Jagged Proteins Proteins 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 238000006056 electrooxidation reaction Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The self-tightening type abnormal-angle tooth surface double-cone ring gasket is characterized in that the self-tightening type abnormal-angle tooth surface double-cone ring gasket (2) is composed of an inner cone sealing surface (5), an outer cone sealing surface (6) and a flange (7), tooth-shaped grooves (10) with different numbers, shapes and sizes are formed in the inner cone sealing surface (5) and the outer cone sealing surface (6), and the self-tightening type abnormal-angle tooth surface double-cone ring gasket (2), a convex flange (1), a concave flange (3) and a bolt (4) form a bolt-flange sealing connection system. The self-tightening type abnormal-angle tooth surface double-cone ring gasket has the advantages of small pretightening force, good sealing effect, simple structure and the like, and is particularly suitable for being used under high-temperature and high-pressure working conditions and large-diameter flange environments.
Description
Technical field
The present invention relates to a kind of pad, a kind of self tightening used in Bolted Flanged Connection different angle flank of tooth bipyramid ring pad, belongs to static seal field specifically.
Background technique
The maximization of equipment in modern industry, high parameter propose more and more higher requirement to joint seal of flanges system, and the sealing difficult point of flange more concentrates on major diameter, High Temperature High Pressure flange all the time.Particularly petrochemical industry, nuclear power system, the flange seal problem of the heat exchanger of many devices, reaction vessel and connecting tube thereof is quite outstanding for a long time, directly has influence on the production of device, becomes the hidden danger of safety in production.Leaking a difficult problem to solve these, constantly to seek and the pad of developing more excellent encapsulating method and new structure is one of developing direction of sealing technique.
Summary of the invention
For the problem of existing major diameter, high temperature and high pressure condition lower flange poor sealing, the present invention proposes a kind of self tightening different angle flank of tooth bipyramid ring pad.Sealing ring pad has extraordinary sealing self-tightening performance under Big Diameter Flange and high-temperature high-pressure work environment, also has long term repeatability simultaneously and uses, and the feature that when working, reliability is strong.
The present invention solves the problems of the technologies described above the technological scheme adopted to be:
A kind of self tightening different angle flank of tooth bipyramid ring pad, described self tightening different angle flank of tooth bipyramid ring pad 2 is made up of interior bevel sealing surface 5, outer bevel sealing surface 6 and flange 7, interior bevel sealing surface 5 and outer bevel sealing surface 6 are respectively equipped with quantity and shape size serrate slot 10 not etc., described self tightening different angle flank of tooth bipyramid ring pad 2 and convex flange 1, female flange 3 and bolt 4 constitute a bolted-flange sealing connected system.
The cone angle of described interior bevel sealing surface 5 is greater than the cone angle of outer bevel sealing surface 6.
The groove roof construction of described serrate slot 10 is triangle, circular arc or trapezoidal.
The fleam θ of described serrate slot 10 is 60-90 degree.
The thickness of described flange 7 is 3.0mm-3.2mm.
The material of described self tightening different angle flank of tooth bipyramid ring pad 2 is identical with flange material, but hardness is lower than flange material.While can preventing electrochemical corrosion like this, can not damage flanged surface.
The invention has the beneficial effects as follows:
1, compared to conventional pads, self tightening of the present invention different angle flank of tooth bipyramid ring pad only needs less bolt pretightening just can reach initial sealing, and sealing spacer has wider enclosed watch area;
2, self tightening of the present invention different angle flank of tooth bipyramid ring pad designs owing to have employed with in the past " forced seal " diverse " pressure energized seal " principle, thus has larger compensation ability, can significantly improve the sealability of flanged joint;
3, self tightening of the present invention different angle flank of tooth bipyramid ring pad can adopt the less bolt of diameter to provide moment of torsion, provides cost savings;
The inside and outside conical surface of 4, gasket seal of the present invention is equipped with serrate slot, which increases the contact stress on pad, thus enhance the sealing effect of sealing ring pad greatly;
5, reusable about 10 times of self tightening of the present invention different angle flank of tooth bipyramid ring pad, reduces user cost, and dismounting is simple simultaneously, is easy to operation;
6, the structure of self tightening of the present invention different angle flank of tooth bipyramid ring pad is easy to processing and has very strong practicability, is particularly suitable for using under major diameter and high temperature and high pressure environment.
Accompanying drawing explanation
Fig. 1 is Bolted Flanged Connection overall structure schematic diagram of the present invention;
Fig. 2 is the partial enlarged drawing of flank of tooth bipyramid ring pad in self tightening different angle in the Bolted Flanged Connection shown in Fig. 1;
In figure: 1, convex flange, 2, self tightening different angle flank of tooth bipyramid ring pad, 3, female flange, 4, bolt, 5, interior bevel sealing surface, 6, outer bevel sealing surface, 7, flange, 8, convex flange male cone (strobilus masculinus), 9, female flange inner conical surface, 10, serrate slot.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail, can be easier to be readily appreciated by one skilled in the art, thus make more explicit defining to protection scope of the present invention to make advantages and features of the invention.
As illustrated in fig. 1 and 2, the present invention includes: a kind of self tightening different angle flank of tooth bipyramid ring pad 2, described body and convex flange 1, female flange 3 and bolt 4 constitute a flanged joint sealing system.
This self tightening different angle flank of tooth bipyramid ring pad 2 is by interior bevel sealing surface 5, outer bevel sealing surface 6 and radially form along the flange 7 stretched, meanwhile, interior bevel sealing surface 5, outer bevel sealing surface 6 has quantity and shape size serrate slot 10 not etc.
The cone angle of the interior bevel sealing surface 5 of described self tightening different angle flank of tooth bipyramid ring pad 2 is greater than the cone angle of outer bevel sealing surface 6, " wedge shape " sealing surface that the interior bevel sealing surface 5 of different amount, outer bevel sealing surface 6 are formed can make in medium after pressure effect, and the inside and outside bevel sealing surface 6 of this self tightening different angle flank of tooth bipyramid ring pad 2 forms self-tightening sealing.And pressure is larger in medium, sealing self-tightening effect is better.
Described self tightening different angle flank of tooth bipyramid ring pad 2 is by radially making convex flange 1 and female flange 3 be separated along the flange 7 stretched, operator can observe gap between flange 7 and convex flange 1 and female flange 3 by naked eyes, judge whether this self tightening different angle flank of tooth bipyramid ring pad 2 is subject to uniform bolt load by gap, when convex flange 1 is installed with female flange 3 simultaneously, whether axis aligns.
The interior bevel sealing surface 5 of described self tightening different angle flank of tooth bipyramid ring pad 2, outer bevel sealing surface 6 has quantity and shape size serrate slot 10 not etc., after bolt 4 is tightened, the interior bevel sealing surface 5 of self tightening different angle flank of tooth bipyramid ring pad 2 contacts with the convex flange male cone (strobilus masculinus) 8 of same angle, outer bevel sealing surface 6 contacts with the female flange inner conical surface 9 of same angle, and serrate slot 10 adds the sealing contact stress on this self tightening different angle flank of tooth bipyramid ring pad 2, the material of this self tightening different angle flank of tooth bipyramid ring pad 2 and convex flange 1 simultaneously, the material of female flange 3 is identical, but hardness is lower than flange material, such one side can prevent electrochemical corrosion, serrate slot 10 can not damage flanged surface on the other hand.
The working principle of patent of the present invention is as follows: when bolt 4 is tightened, and the interior bevel sealing surface 5 of self tightening different angle flank of tooth bipyramid ring pad 2 and outer bevel sealing surface 6 contact respectively and with the convex flange male cone (strobilus masculinus) 8 of angle and female flange inner conical surface 9, forms initial sealing.After this self tightening different angle flank of tooth bipyramid ring pad 2 is subject to the pretightening force effect of bolt 4, self tightening different angle flank of tooth bipyramid ring pad 2 is compressed in the cavity of female flange 3, its outer bevel sealing surface 6 is adjacent to female flange inner conical surface 9, and this self tightening different angle flank of tooth bipyramid ring pad 2 just produces restoring force as Compress Spring.In medium after pressure effect, the sphenoid surface that bevel sealing surface 5 and outer bevel sealing surface 6 form in self tightening different angle flank of tooth bipyramid ring pad 2 can produce larger stress, thus reach the object of self-tightening sealing.The interior bevel sealing surface 5 of this self tightening different angle flank of tooth bipyramid ring pad 2, outer bevel sealing surface 6 there is evenly distributed serrate slot 10 simultaneously, when being fitted by serrate slot 10 and flanged surface, larger sealing contact stress can be produced on interior bevel sealing surface 5, outer bevel sealing surface 6, this meeting enhanced leaktightness effect greatly, makes the sealing of this self-sealing ring tighter.
Should be understood that; the foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a self tightening different angle flank of tooth bipyramid ring pad, it is characterized in that, described self tightening different angle flank of tooth bipyramid ring pad (2) is made up of interior bevel sealing surface (5), outer bevel sealing surface (6) and flange (7), interior bevel sealing surface (5) and outer bevel sealing surface (6) are respectively equipped with quantity and shape size serrate slot (10) not etc., described self tightening different angle flank of tooth bipyramid ring pad (2) and convex flange (1), female flange (3) and bolt (4) constitute a bolted-flange sealing connected system.
2. the different angle of a kind of self tightening according to claim 1 flank of tooth bipyramid ring pad, is characterized in that: the cone angle of described interior bevel sealing surface (5) is greater than the cone angle of outer bevel sealing surface (6).
3. the different angle of a kind of self tightening according to claim 1 flank of tooth bipyramid ring pad, is characterized in that: the groove roof construction of described serrate slot (10) is triangle, circular arc or trapezoidal.
4. the different angle of a kind of self tightening according to claim 1 flank of tooth bipyramid ring pad, is characterized in that: the fleam θ of described serrate slot (10) is 60-90 degree.
5. the different angle of a kind of self tightening according to claim 1 flank of tooth bipyramid ring pad, is characterized in that: the thickness of described flange (7) is 3.0mm-3.2mm.
6. the different angle of a kind of self tightening according to claim 1 flank of tooth bipyramid ring pad, is characterized in that: the material at described self tightening different angle flank of tooth bipyramid ring pad (2) is identical with flange material, but hardness is lower than flange material.While can preventing electrochemical corrosion like this, can not damage flanged surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410594817.6A CN104358873A (en) | 2014-10-29 | 2014-10-29 | Self-tightening type abnormal-angle tooth surface double-cone ring pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410594817.6A CN104358873A (en) | 2014-10-29 | 2014-10-29 | Self-tightening type abnormal-angle tooth surface double-cone ring pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104358873A true CN104358873A (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410594817.6A Pending CN104358873A (en) | 2014-10-29 | 2014-10-29 | Self-tightening type abnormal-angle tooth surface double-cone ring pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104358873A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700014A (en) * | 1994-08-17 | 1997-12-23 | Japan Vac's Metal Co., Ltd. | Vacuum sealing structure |
| US20090115188A1 (en) * | 2007-11-01 | 2009-05-07 | Howard Erik M | Systems and Methods for Making Connections Between Pipe Sections to Form a Conduit That is Substantially Free of Gaps |
| CN201615220U (en) * | 2010-02-26 | 2010-10-27 | 河南新天地药业股份有限公司 | Sealing ring of agitated reactor |
| CN203052034U (en) * | 2013-01-05 | 2013-07-10 | 中国航空工业集团公司沈阳发动机设计研究所 | Metal ring sealing connection hoop flange structure with cylindrical ring |
| CN203052037U (en) * | 2013-01-05 | 2013-07-10 | 中国航空工业集团公司沈阳发动机设计研究所 | Connecting clamping flange structure with frustum-shaped metal ring seal |
| CN204358089U (en) * | 2014-10-29 | 2015-05-27 | 南京工业大学 | Self-tightening type abnormal-angle tooth surface double-cone ring pad |
-
2014
- 2014-10-29 CN CN201410594817.6A patent/CN104358873A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700014A (en) * | 1994-08-17 | 1997-12-23 | Japan Vac's Metal Co., Ltd. | Vacuum sealing structure |
| US20090115188A1 (en) * | 2007-11-01 | 2009-05-07 | Howard Erik M | Systems and Methods for Making Connections Between Pipe Sections to Form a Conduit That is Substantially Free of Gaps |
| CN201615220U (en) * | 2010-02-26 | 2010-10-27 | 河南新天地药业股份有限公司 | Sealing ring of agitated reactor |
| CN203052034U (en) * | 2013-01-05 | 2013-07-10 | 中国航空工业集团公司沈阳发动机设计研究所 | Metal ring sealing connection hoop flange structure with cylindrical ring |
| CN203052037U (en) * | 2013-01-05 | 2013-07-10 | 中国航空工业集团公司沈阳发动机设计研究所 | Connecting clamping flange structure with frustum-shaped metal ring seal |
| CN204358089U (en) * | 2014-10-29 | 2015-05-27 | 南京工业大学 | Self-tightening type abnormal-angle tooth surface double-cone ring pad |
Non-Patent Citations (2)
| Title |
|---|
| 徐永杰等: "新型双楔角环垫结构参数对密封接触压力的影响", 《固体火箭技术》, vol. 36, no. 6, 31 December 2013 (2013-12-31) * |
| 陆晓峰等: "新型双楔角环垫结构参数显著性分析与设计", 《固体火箭技术》, vol. 37, no. 2, 30 April 2013 (2013-04-30) * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |
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| RJ01 | Rejection of invention patent application after publication |