CN103982738A - Anti-corrosion rectangular corrugated expansion joint - Google Patents
Anti-corrosion rectangular corrugated expansion joint Download PDFInfo
- Publication number
- CN103982738A CN103982738A CN201410150741.8A CN201410150741A CN103982738A CN 103982738 A CN103982738 A CN 103982738A CN 201410150741 A CN201410150741 A CN 201410150741A CN 103982738 A CN103982738 A CN 103982738A
- Authority
- CN
- China
- Prior art keywords
- straight line
- line type
- type bellows
- linear type
- type corrugated
- 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.)
- Pending
Links
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 bellows or an expansible folded or corrugated tube
- F16L51/021—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube having a rectangular cross-section
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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 bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
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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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
Abstract
The invention discloses an anti-corrosion rectangular corrugated expansion joint. The anti-corrosion rectangular corrugated expansion joint comprises linear type corrugated pipes I, linear type corrugated pipes II and linear type corrugated pipes III, which have consistent axial section shapes, wherein a rectangular structure is defined by the linear type corrugated pipes I and the linear type corrugated pipes II in an encircling manner; angular cuts, which are formed along the axial direction, are formed in the corresponding linear type corrugated pipes I and the corresponding linear type corrugated pipes II, straight sides on two ends are connected together in a sealed manner so as to form rectangular interfaces, and triangular notches are formed in corrugated pipe sections; angular cuts, which are formed along the axial direction, are formed in the linear type corrugated pipes III and are in welded and sealed connection with the triangular notches formed by the linear type corrugated pipes I and the linear type corrugated pipes II; the further improvements are that an anti-corrosion layer is respectively arranged on the inner walls of the linear type corrugated pipes I, the linear type corrugated pipes II and the linear type corrugated pipes II; the linear type corrugated pipes I, the linear type corrugated pipes II and the linear type corrugated pipes II are formed by cutting one linear type corrugated pipe. The anti-corrosion rectangular corrugated expansion joint has the advantages of simplicity in manufacturing, low manufacturing cost, less application concentration, corrosion resistance and long service life.
Description
Technical field
The present invention relates to pipeline compensator, relate in particular to a kind of rectangle corrugated expansion joint.
Background technique
On market, between the adjacent straight line type bellows of rectangle corrugated expansion joint, adopt right angle or fillet to connect.There is following shortcoming in the rectangle corrugated expansion joint that right angle connects: is welded in use because this compensator adopts four straight line type bellowss to cut oblique angle at 45 °, at right angle there is weld seam in place, in use four jiaos of stress are concentrated, through repeatedly stretching, compressing, very easily ftracture in weld joint, cause pipeline to produce leakage phenomenon and scrap, having increased cost; The rectangle corrugated expansion joint that fillet connects is that the circle corrugated pipe of adjacent straight line type bellows subdivision is welded to connect, this Placement can avoid the stress at the right angle place of right angle connection to concentrate, but straight line type bellows and circle corrugated pipe exist axial shape and size deviation owing to manufacturing reason, after causing straight line type bellows and circle corrugated pipe welding, the new stress of generation is concentrated, easily cause fatigue failure, shortened the working life of compensator.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of making simply, can significantly reduce in application sets, effectively improve the compensator corrosion-resistant rectangle corrugated expansion joint in working life.
The present invention is achieved through the following technical solutions technical goal.
Corrosion-resistant rectangle corrugated expansion joint, comprises consistent straight line type bellows I and the straight line type bellows II of two groups of opposing parallel, axial section shape that surrounds rectangle; Described straight line type bellows I, straight line type bellows II form by the straight flange at bellows and two ends; Its improvements are: also comprise straight line type bellows III; Described straight line type bellows III and straight line type bellows I, straight line type bellows II axial section shape are consistent; Described straight line type bellows I, straight line type bellows II are provided with along axial angular cut, and the straight flange at two ends is sealed connected together, and form rectangle interface, and corrugated pipe segment forms vee; Described straight line type bellows III is provided with along axial angular cut, and welded seal is connected to the vee place of four jiaos of rectangular configuration that straight line type bellows I, straight line type bellows II surround.
In said structure, described straight line type bellows I, straight line type bellows II, straight line type bellows III inwall are equipped with anti-corrosion layer.
In said structure, described anti-corrosion layer is teflon coatings.
In said structure, described straight line type bellows I, straight line type bellows II, straight line type bellows III are cut into by same straight line type bellows.
The present invention compared with prior art, has following good effect:
1. straight line type bellows III welded seal is connected to the vee place of four jiaos of rectangular configuration that straight line type bellows I, straight line type bellows II surround, because straight line type bellows III and straight line type bellows I, straight line type bellows II axial section shape are consistent, can significantly reduce in application sets, effectively improve compensator working life.
2. straight line type bellows I, straight line type bellows II, straight line type bellows III are cut into by same straight line type bellows, have simplified production technology, have saved cost of production.
3. straight line type bellows I, straight line type bellows II, straight line type bellows III inwall are equipped with anti-corrosion layer, can make these surfaces have higher corrosion resistance, further improve the working life of compensator.
4. wear-and corrosion-resistant layer is teflon coatings, has good heat resistance, chemical inertness and low frictional properties, can improve the usability of compensator.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the plan view of Fig. 1.
Embodiment
The invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments below.
Corrosion-resistant rectangle corrugated expansion joint shown in accompanying drawing, comprise straight line type bellows I 1 that axial section shape is consistent and straight line type bellows II 2, straight line type bellows III 3, in the present embodiment, straight line type bellows I 1, straight line type bellows II 2, straight line type bellows III 3 are cut into by same straight line type bellows; Straight line type bellows I 1, straight line type bellows II 2 form by the straight flange at bellows and two ends; Straight line type bellows I 1, straight line type bellows II 2 are provided with along axial angular cut, straight line type bellows I 1 and the straight line type bellows II 2 of two groups of opposing parallel surround rectangle, the straight flange at two ends is sealed connected together, and forms rectangle interface, and corrugated pipe segment forms vee; Straight line type bellows III 3 is provided with along axial angular cut, there is no straight flange, and welded seal is connected to the vee place of four jiaos of rectangular configuration that straight line type bellows I 1, straight line type bellows II 2 surround.
Straight line type bellows I 1, straight line type bellows II 2, straight line type bellows III 3 inwalls are equipped with anti-corrosion layer, and in the present embodiment, anti-corrosion layer is teflon coatings.
Claims (4)
1. a corrosion-resistant rectangle corrugated expansion joint, comprises consistent straight line type bellows I (1) and the straight line type bellows II (2) of two groups of opposing parallel, axial section shape that surrounds rectangle; Described straight line type bellows I (1), straight line type bellows II (2) form by the straight flange at bellows and two ends; It is characterized in that: also comprise straight line type bellows III (3); Described straight line type bellows III (3) and straight line type bellows I (1), straight line type bellows II (2) axial section shape are consistent; Described straight line type bellows I (1), straight line type bellows II (2) are provided with along axial angular cut, and the straight flange at two ends is sealed connected together, and form rectangle interface, and corrugated pipe segment forms vee; Described straight line type bellows III (3) is provided with along axial angular cut, and welded seal is connected to the vee place of four jiaos of rectangular configuration that straight line type bellows I (1), straight line type bellows II (2) surround.
2. according to the corrosion-resistant rectangle corrugated expansion joint described in claims 1, it is characterized in that: described straight line type bellows I (1), straight line type bellows II (2), straight line type bellows III (3) inwall are equipped with anti-corrosion layer.
3. according to the corrosion-resistant rectangle corrugated expansion joint described in claims 2, it is characterized in that: described anti-corrosion layer is teflon coatings.
4. according to the corrosion-resistant rectangle corrugated expansion joint one of claims 1～3 Suo Shu, it is characterized in that: described straight line type bellows I (1), straight line type bellows II (2), straight line type bellows III (3) are cut into by same straight line type bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150741.8A CN103982738A (en) | 2014-04-16 | 2014-04-16 | Anti-corrosion rectangular corrugated expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150741.8A CN103982738A (en) | 2014-04-16 | 2014-04-16 | Anti-corrosion rectangular corrugated expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103982738A true CN103982738A (en) | 2014-08-13 |
Family
ID=51274823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410150741.8A Pending CN103982738A (en) | 2014-04-16 | 2014-04-16 | Anti-corrosion rectangular corrugated expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103982738A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882677A (en) * | 2019-04-16 | 2019-06-14 | 无锡金龙石化冶金设备制造有限公司 | A kind of alkyl plant reactor expansion joint |
-
2014
- 2014-04-16 CN CN201410150741.8A patent/CN103982738A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882677A (en) * | 2019-04-16 | 2019-06-14 | 无锡金龙石化冶金设备制造有限公司 | A kind of alkyl plant reactor expansion joint |
| CN109882677B (en) * | 2019-04-16 | 2023-11-17 | 无锡金龙石化冶金设备制造有限公司 | Alkylation device reactor expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140813 |
|
| WD01 | Invention patent application deemed withdrawn after publication |