CN103453252A - Flange for pipeline connection - Google Patents
Flange for pipeline connection Download PDFInfo
- Publication number
- CN103453252A CN103453252A CN201310422130XA CN201310422130A CN103453252A CN 103453252 A CN103453252 A CN 103453252A CN 201310422130X A CN201310422130X A CN 201310422130XA CN 201310422130 A CN201310422130 A CN 201310422130A CN 103453252 A CN103453252 A CN 103453252A
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- flange
- ring
- flange ring
- sealing surface
- flange body
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Abstract
The invention relates to an energy-saving flange for the pipeline connection. The flange comprises a flange body and flange rings, wherein the flange rings are fixed on the outer side of the flange body; a sealing surface is arranged on the flange body; an upper end face and a lower end face are arranged on each flange ring; a fixing screw hole is formed in each flange ring. The flange is characterized in that the lower end face of each flange ring is directly connected with the sealing surface of the flange body, an angle Alpha is formed between the lower end face of each flange ring and the sealing surface of the flange body, and an angle Beta is formed between the upper end face of each flange ring and the sealing surface of the flange body, wherein the degree of Alpha is based on the formula: Alpha=C*2/100, the unit of the C is millimeter, and the C represents the thickness of the flange ring; the degree of Beta is based on the formula: Beta=0.7*Alpha. The flange has the advantage that the sealing effect of the pipeline connection can be improved.
Description
Technical field
The present invention relates to a kind of flange, relate in particular to a kind of pipeline connection flange.
Background technique
Flange, the blue flange disk of call, be interconnective part between pipe and pipe, for the connection between pipe end again; Typical flange comprises flange body and flange ring as shown in Figure 1 at present, and flange ring is fixed on the flange body outside, is provided with fixing threaded hole on flange ring; The sealing surface of the upper plane of fixing threaded hole and lower plane and flange body is completely parallel as can be known from Fig. 1; The lower plane of fixing threaded hole and sealing surface not at grade, have a step between them; Fig. 2 is the flange connect schematic diagram, and it comprises bolt, nut, flange (upper and lower two), gasket seal; Between two flange rings of two flanges, certain spacing is arranged; After flange is inner and pipe interior is subject to pressure medium, corresponding distortion can occur; As shown in Figure 3, after distortion, because the spacing of the flange ring of two flange bolt connection places can shorten, so just cause loosening between bolts and nuts, thereby cause seal failure generation leakage accident.
Summary of the invention
For above shortcoming, the object of the present invention is to provide a kind of pipeline that can strengthen sealing effect to connect and use flange.
Technology contents of the present invention is: a kind of pipeline connects uses energy-conservation flange, comprise flange body and flange ring, flange ring is fixed on the flange body outside, and flange body is provided with a sealing surface, be provided with a upper-end surface and a lower end surface on flange ring, be provided with fixing threaded hole on flange ring; It is characterized in that directly linking together between the sealing surface of the lower end surface of flange ring and flange body, and be formed with an angle [alpha], α=(C * 2 ÷ 100) degree, the unit of C is millimeter, the thickness that wherein C is flange ring; The upper-end surface of flange ring and the sealing surface of flange body be ready-made an angle beta, β=(0.7 * α) degree.
The advantage that the present invention compared with prior art had is: two flanges in the present invention are tightened by bolts and nuts, make flange ring upwarp part and produce predeformation, and this predeformation can be offset flange and be subject to most of strain of pressing in medium.Simultaneously two sealing surfaces of the flange body of two flanges and two seal rings are plane laminatings fully mutually, have stoped partly distortion, make bolt, nut all the time in tightening, the gasket seal impaction state, thereby strengthened the sealing effect of flange seal gasket; So just can reduce the size 10% of the standard flange thickness C of former same pressure rating, also just reduce flange weight, reduce user cost, save social resources.
The accompanying drawing explanation
Fig. 1 is at present typical flange schematic diagram.
Fig. 2 is at present typical flange connect schematic diagram.
Fig. 3 is current distortion schematic diagram in use after typical two flange connects.
Fig. 4 is structural representation of the present invention.
Fig. 5 be in the present invention two flanges install and use phase diagram.
Embodiment
As shown in Figure 1, at present typical flange comprises flange body 1 and flange ring 2, and flange ring 2 is fixed on flange body 1 outside, is provided with fixing threaded hole 2.1 on flange ring 2; The upper plane 2.11 of fixing threaded hole 2.1 and lower plane 2.12 are completely parallel with the sealing surface 1.1 of flange body 1, and the lower plane 2.12 of fixing threaded hole 2.1 and sealing surface 1.1 not at grade, have a step 3 between them.
As shown in Figure 2, the connection schematic diagram of current typical two flanges, it is provided with gasket seal 5, two flanges 4 and closely links together by bolt 6 and nut 7 between two flanges 4; Between two flange rings 2 of two flanges 4, certain spacing L is arranged.
As shown in Figure 3, after flange is inner and pipe interior is subject to pressure medium, corresponding distortion can occur; After distortion, because the spacing of the flange ring of two flange bolt connection places can shorten.
As shown in Figure 4, a kind of pipeline connects uses energy-conservation flange, comprises flange body 8 and flange ring 9, flange ring 9 is fixed on flange body 8 outsides, flange body 8 is provided with a sealing surface 8.1, is provided with a 9.1He Yi lower end surface, upper-end surface 9.2 on flange ring 9, is provided with fixing threaded hole 9.3 on flange ring 9; The lower end surface 9.2 that it is characterized in that flange ring 9 is formed with an angle [alpha] with the sealing surface 8.1 of flange body 8, α=(C * 2 ÷ 100) degree, and the unit of C is millimeter, the thickness that wherein C is flange ring 9; The upper-end surface 9.1 of flange ring 9 is formed with an angle beta with the sealing surface 1.1 of flange body, β=(0.7 * α) degree.
As shown in Figure 5, two flanges in the present invention are tightened by bolt 10 and nut 11, make flange ring 9 upwarp part and produce predeformation, and this predeformation can be offset flange and be subject to most of strain of pressing in medium; Making two sealing surfaces of flange body of two flanges and seal ring 12 is plane laminatings fully mutually, make bolt 10, nut 11 all the time in tightening, impaction state, thereby strengthened the sealing effect of flange seal gasket 12.
Claims (1)
1. energy-conservation flange is used in a pipeline connection, comprises flange body and flange ring, and flange ring is fixed on the flange body outside, and flange body is provided with a sealing surface, is provided with a upper-end surface and a lower end surface on flange ring, is provided with fixing threaded hole on flange ring; It is characterized in that directly linking together between the sealing surface of the lower end surface of flange ring and flange body, and be formed with an angle [alpha], α=(C * 2 ÷ 100) degree, the unit of C is millimeter, the thickness that wherein C is flange ring; The upper-end surface of flange ring and the sealing surface of flange body be ready-made an angle beta, β=(0.7 * α) degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310422130XA CN103453252A (en) | 2013-09-17 | 2013-09-17 | Flange for pipeline connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310422130XA CN103453252A (en) | 2013-09-17 | 2013-09-17 | Flange for pipeline connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103453252A true CN103453252A (en) | 2013-12-18 |
Family
ID=49735935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310422130XA Pending CN103453252A (en) | 2013-09-17 | 2013-09-17 | Flange for pipeline connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103453252A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423022A (en) * | 2014-09-10 | 2016-03-23 | 北京宇航系统工程研究所 | Large-diameter butt-joint flange structure |
| CN112184029A (en) * | 2020-09-30 | 2021-01-05 | 中石化第四建设有限公司 | Pipeline flange installation information construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB823758A (en) * | 1956-08-28 | 1959-11-18 | Chemetron Corp | Flange-type pipe joints |
| US5230540A (en) * | 1989-03-15 | 1993-07-27 | Rolls-Royce Plc | Fluid-tight joint with inclined flange face |
| CN201059400Y (en) * | 2007-06-15 | 2008-05-14 | 陕西科技大学 | Sealing flange |
| FR2921144A1 (en) * | 2007-09-19 | 2009-03-20 | Snecma Sa | Pre-stress sealed connection device for e.g. pipeline, has clamp with external surface inclined at angle, whose inverse tangent is equal to ratio of maximal clearance at clamps to distance between support zone and periphery of clamps |
| CN203453673U (en) * | 2013-09-17 | 2014-02-26 | 江阴中南重工股份有限公司 | Flange for pipeline coupling |
-
2013
- 2013-09-17 CN CN201310422130XA patent/CN103453252A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB823758A (en) * | 1956-08-28 | 1959-11-18 | Chemetron Corp | Flange-type pipe joints |
| US5230540A (en) * | 1989-03-15 | 1993-07-27 | Rolls-Royce Plc | Fluid-tight joint with inclined flange face |
| CN201059400Y (en) * | 2007-06-15 | 2008-05-14 | 陕西科技大学 | Sealing flange |
| FR2921144A1 (en) * | 2007-09-19 | 2009-03-20 | Snecma Sa | Pre-stress sealed connection device for e.g. pipeline, has clamp with external surface inclined at angle, whose inverse tangent is equal to ratio of maximal clearance at clamps to distance between support zone and periphery of clamps |
| CN203453673U (en) * | 2013-09-17 | 2014-02-26 | 江阴中南重工股份有限公司 | Flange for pipeline coupling |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423022A (en) * | 2014-09-10 | 2016-03-23 | 北京宇航系统工程研究所 | Large-diameter butt-joint flange structure |
| CN105423022B (en) * | 2014-09-10 | 2017-08-25 | 北京宇航系统工程研究所 | A kind of major diameter abutted flange structure |
| CN112184029A (en) * | 2020-09-30 | 2021-01-05 | 中石化第四建设有限公司 | Pipeline flange installation information construction method |
| CN112184029B (en) * | 2020-09-30 | 2022-04-08 | 中石化第四建设有限公司 | Pipeline flange installation information construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131218 |