CN103883825A - Sawtooth bellow expansion joint - Google Patents
Sawtooth bellow expansion joint Download PDFInfo
- Publication number
- CN103883825A CN103883825A CN201410094042.6A CN201410094042A CN103883825A CN 103883825 A CN103883825 A CN 103883825A CN 201410094042 A CN201410094042 A CN 201410094042A CN 103883825 A CN103883825 A CN 103883825A
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- China
- Prior art keywords
- tooth
- bellow
- expansion joint
- profile
- bellows
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Classifications
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- 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
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube with several corrugations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a sawtooth bellow expansion joint which is composed of flanges, a bellow and connecting pipes together. The flanges are located at the upper end and the lower end, and the flanges placed flat are coaxially connected with the bellow through the vertical connecting pipes in a sealing mode. Tooth-shaped waves of the bellow are in a sawtooth shape, and every two tooth-shaped waves are connected in circular arc transition. When the sawtooth bellow expansion joint of the structure operates, the tooth-shaped waves of the bellow are provided with no medium residue, and the bottoms of tooth-shaped wave grooves are always kept clean, so that no obstacle exists when the bellow elastically deforms, and flexible compensation action is ensured. Most importantly, no medium residue exists at the bottoms of the tooth-shaped grooves of the bellow, so that corrosion and damaging are avoided, the service life of the expansion joint is greatly prolonged, and using cost of a user is greatly reduced.
Description
Technical field
The present invention relates to a kind of pipe safety device, specifically, the present invention relates to a kind of expansion joint, particularly a kind of for the perpendicular supporting expansion joint of pipeline of putting.
Background technique
Industry pipe network is determined trend according to technological process and device location conventionally, and crisscross pipe network is in operation and produces because built-in medium temperature and pressure change the distortion of expanding with heat and contract with cold accordingly, and the main forms of pipe deforming is axial force and displacement.In engineering, in order to eliminate to greatest extent axial force and the displacement destructiveness to pipe network, on some nodes of pipe network, configure necessary expansion joint.Expansion joint is a kind of universal pipes safety installations, and its relies on the elasticity of bellows to absorb or compensates pipe deforming.That the bellows wave mode of prior art mainly contains is U-shaped, S type and Ω type, and the bellows of these wave modes all has fine elasticity, in supporting expansion joint, can realize predictive role.But the bellows of prior art can not load-bearing because of reasons in structure, be only applicable to the expansion joint that horizontal installs supporting.Erecting and putting the equipped expansion joint of pipeline is vertically-arranged shape, and bellows is wherein except bearing certain weight, and the wave trough bottom of indent easily retains medium.For non-corrosiveness medium residual, be only to increase some bellows loads, reduce compensation flexibility, there is no other great negative effect.If exist Korrosionsmedium residual in thin-wall corrugated tube wave trough bottom, wave trough bottom will cause corrosivity to be damaged.For example, the manufacturing flue gas exhaust pipeline of carbon black is the perpendicular pipeline of putting, in this pipeline, must configure expansion joint, in smoke exhaust process, a part of carbon black granules is settled down to the wave trough bottom of bellows, the carbon black granules of long-term accumulated is except increasing bellows load-bearing, reduce outside compensation flexibility, maximum problem is that carbon black granules is corrosive to bellows, and the corrosion continuing for some time must cause bellows penetrability to be damaged.
Summary of the invention
The present invention is mainly for the deficiencies in the prior art, a kind of perpendicular sawtooth pattern bellows expansion joint of putting piping design that aims at is proposed, in this expansion joint, the bellows wave mode of configure dedicated is reasonable, run duration wave trough bottom is residual without medium, neither increase bellows load, also avoid accumulating of source of corrosion, thereby greatly improve the flexibility of expansion joint working life and compensating movement.
The present invention is achieved through the following technical solutions technical goal.
Zigzag fashion ripple pipe expansion joint, it is made up of jointly flange, bellows and adapter.Described flange is positioned at upper and lower two ends, and the flange of horizontal connects bellows by the perpendicular adapter co-axial seal of putting.Its improvements are: the profile of tooth ripple of described bellows is PDX triangle down, angle α=30 of every profile of tooth ripple
0～45
0, between two profile of tooth ripples, adopt arc transition to connect.
As further improvement technological scheme, bellows profile of tooth ripple is isosceles triangle, angle α=45 of every profile of tooth ripple
0～60
0.
As further improvement technological scheme, the profile of tooth ripple of bellows is trapezoidal, and profile of tooth ripple is hypotenuse up and down.
The present invention compared with prior art, has following good effect:
1, the bellows of profile of tooth ripple of the present invention, simple and reasonable for structure, makes easily;
2, the bellows of profile of tooth ripple of the present invention, accomplishes without inner groovy from structure, residual without medium when use, there is no etching condition, greatly improves the operating conditions of bellows, is conducive to improve expansion joint working life;
3, the bellows of profile of tooth ripple of the present invention, residual without medium during because of use, do not bear a heavy burden, significantly promote the sensitivity of bellows compensating movement.
Brief description of the drawings
Fig. 1 is that structure of the present invention is partly cutd open schematic diagram, and in figure, the profile of tooth ripple of bellows is PDX triangle down.
Fig. 2 is that structure of the present invention is partly cutd open schematic diagram, and in figure, the profile of tooth ripple of bellows is isosceles triangle.
Fig. 3 is that structure of the present invention is partly cutd open schematic diagram, and in figure, the profile of tooth ripple of bellows is trapezoidal.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the invention will be further described.
Zigzag fashion ripple pipe expansion joint shown in Fig. 1 is vertical structure, and the present embodiment is arranged in carbon black industry flue gas exhaust pipeline, its bore DN=1600mm.This expansion joint is made up of jointly flange 1, bellows 2 and adapter 3.Described flange 1 is the outer connector of expansion joint, is positioned at flange 1 sealed joint pipe 3 at upper and lower two ends, and corresponding adapter 3 is docked respectively at bellows 2 two ends.The present invention, for fear of the residual medium in bottom of the wave trough indent of bellows 2, is designed to zigzag fashion by the profile of tooth ripple of bellows 2, and the profile of tooth ripple of the present embodiment is PDX triangle down, angle α=30 of every profile of tooth ripple
0, this profile of tooth popin limit is positioned at top, is hypotenuse below, adopts arc transition to connect between two profile of tooth ripples, and stress is concentrated when reducing resiliently deformable.In zigzag fashion ripple pipe expansion joint when operation that adopts above-mentioned parameter to make, because the profile of tooth ripple of bellows 2 is without the residual condition of medium, its profile of tooth wave trough bottom protection is all the time clean, accessible while making bellows 2 resiliently deformable, guarantees that compensating movement is flexible.The most important thing is that bellows 2 profile of tooth wave trough bottoms do not have medium residual, avoid occurring corrosion and damage, make expansion joint have large increase working life, greatly reduce user's user cost.
Zigzag fashion ripple pipe expansion joint shown in Fig. 2, the same with embodiment's 1 structure, it is supporting in the pipeline of carbon black industry air preheater outlet.The present embodiment bore DN=500mm, because bore is little compared with embodiment 1, in the medium of transmission, contain a large amount of carbon black granules, accumulate carbon black granules for fear of the profile of tooth wave trough bottom of bellows 2, in the present embodiment, the profile of tooth ripple of bellows 2 is isosceles triangle, angle α=60 of every profile of tooth ripple
0, upper and lower both sides are all 30
0tilt, between two profile of tooth ripples, adopt circular arc to connect.The bellows 2 of this structure is similar with embodiment's 1 effect, therefore do not do to state more.
Claims (3)
1. a zigzag fashion ripple pipe expansion joint, it is made up of jointly flange (1), bellows (2) and adapter (3); Described flange (1) is positioned at upper and lower two ends, and the flange (1) of horizontal connects bellows (2) by perpendicular adapter (3) co-axial seal of putting; It is characterized in that: the profile of tooth ripple of described bellows (2) is PDX triangle down, angle α=30 of every profile of tooth ripple
0～45
0, between two profile of tooth ripples, adopt arc transition to connect.
2. zigzag fashion ripple pipe expansion joint according to claim 1, is characterized in that: described bellows (2) profile of tooth ripple is isosceles triangle, angle α=45 of every profile of tooth ripple
0～60
0.
3. zigzag fashion ripple pipe expansion joint according to claim 1, is characterized in that: the profile of tooth ripple of described bellows (2) is trapezoidal, profile of tooth ripple is hypotenuse up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094042.6A CN103883825A (en) | 2014-03-14 | 2014-03-14 | Sawtooth bellow expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410094042.6A CN103883825A (en) | 2014-03-14 | 2014-03-14 | Sawtooth bellow expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103883825A true CN103883825A (en) | 2014-06-25 |
Family
ID=50952871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410094042.6A Pending CN103883825A (en) | 2014-03-14 | 2014-03-14 | Sawtooth bellow expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103883825A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134969A (en) * | 2015-08-25 | 2015-12-09 | 南京道隆橡塑科技有限公司 | Sterile valve with liquid self-drain function |
| CN105134982A (en) * | 2015-08-25 | 2015-12-09 | 南京道隆橡塑科技有限公司 | Sterile corrugated diaphragm and sterile valve |
| CN108413167A (en) * | 2018-05-15 | 2018-08-17 | 广东世创金属科技股份有限公司 | For the tank connected rectangular expansion joint of Muffle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2710598A1 (en) * | 1977-03-11 | 1978-09-14 | Volkswagenwerk Ag | Exhaust pipe detachable gas-tight pipe union - has sheet metal membrane with two folds and radial end faces |
| CN2157866Y (en) * | 1991-11-16 | 1994-03-02 | 林瑞伍 | Polytetrafluorethylene-metal compound compensator |
| DE19633158A1 (en) * | 1996-08-17 | 1998-02-19 | Stenflex Rudolf Stender Gmbh | Device for compensating for the movement of two pipes to be connected in a pressure-tight manner and method for their production |
| CN101319740A (en) * | 2008-06-29 | 2008-12-10 | 程秀萍 | Bellows used for polytetrafluoroethylene compensator and manufacturing method thereof |
| CN203202498U (en) * | 2013-04-25 | 2013-09-18 | 长沙天卓塑胶有限公司 | Double-wall corrugated pipe set with novel assembling structure |
| CN203730986U (en) * | 2014-03-14 | 2014-07-23 | 江苏曙光压力容器有限公司 | Saw-tooth corrugated pipe expansion joint |
-
2014
- 2014-03-14 CN CN201410094042.6A patent/CN103883825A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2710598A1 (en) * | 1977-03-11 | 1978-09-14 | Volkswagenwerk Ag | Exhaust pipe detachable gas-tight pipe union - has sheet metal membrane with two folds and radial end faces |
| CN2157866Y (en) * | 1991-11-16 | 1994-03-02 | 林瑞伍 | Polytetrafluorethylene-metal compound compensator |
| DE19633158A1 (en) * | 1996-08-17 | 1998-02-19 | Stenflex Rudolf Stender Gmbh | Device for compensating for the movement of two pipes to be connected in a pressure-tight manner and method for their production |
| CN101319740A (en) * | 2008-06-29 | 2008-12-10 | 程秀萍 | Bellows used for polytetrafluoroethylene compensator and manufacturing method thereof |
| CN203202498U (en) * | 2013-04-25 | 2013-09-18 | 长沙天卓塑胶有限公司 | Double-wall corrugated pipe set with novel assembling structure |
| CN203730986U (en) * | 2014-03-14 | 2014-07-23 | 江苏曙光压力容器有限公司 | Saw-tooth corrugated pipe expansion joint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134969A (en) * | 2015-08-25 | 2015-12-09 | 南京道隆橡塑科技有限公司 | Sterile valve with liquid self-drain function |
| CN105134982A (en) * | 2015-08-25 | 2015-12-09 | 南京道隆橡塑科技有限公司 | Sterile corrugated diaphragm and sterile valve |
| CN108413167A (en) * | 2018-05-15 | 2018-08-17 | 广东世创金属科技股份有限公司 | For the tank connected rectangular expansion joint of Muffle |
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|---|---|---|---|
| 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: 20140625 |