CN104110554A - Negative-pressure-resistant and anti-corrosion corrugated pipe compensator - Google Patents
Negative-pressure-resistant and anti-corrosion corrugated pipe compensator Download PDFInfo
- Publication number
- CN104110554A CN104110554A CN201410282432.6A CN201410282432A CN104110554A CN 104110554 A CN104110554 A CN 104110554A CN 201410282432 A CN201410282432 A CN 201410282432A CN 104110554 A CN104110554 A CN 104110554A
- Authority
- CN
- China
- Prior art keywords
- corrugated pipe
- bellows
- corrosion
- glass fiber
- teflon
- 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
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with several corrugations
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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
- F16L51/028—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with the expansion or contraction of each corrugation being limited
Abstract
The invention discloses a negative-pressure-resistant and anti-corrosion corrugated pipe compensator which comprises a corrugated pipe and connecting flanges. The corrugated pipe is connected with the connecting flanges at the two ends of the corrugated pipe to form a corrugated pipe compensation structure, and a teflon lining pipe is arranged in the corrugated pipe. The teflon lining pipe adheres to the inner wall of the corrugated pipe and is formed by compounding an inner glass fiber cloth layer and an outer teflon layer through high-temperature and high-pressure hot melting. A metal net is arranged in the teflon layer in a sintered mode. The negative-pressure-resistant and anti-corrosion corrugated pipe compensator is characterized in that each basic grid of the metal net is of a quadrilateral structure, the directions of the two diagonal lines of the quadrangle are identical with the axial direction and the radial direction of the corrugated pipe respectively, a glass fiber reinforcing layer wraps the metal net and reinforcing rings are arranged in annular grooves of the outer wall of the corrugated pipe. The negative-pressure-resistant and anti-corrosion corrugated pipe compensator is high in structural intensity, good in toughness, good in adhesive property to the inner wall of the corrugated pipe, good in negative pressure resistance and long in service life.
Description
Technical field
The present invention relates to pipeline compensator, particularly relate to a kind of corrugated expansion joint.
Background technique
Corrugated expansion joint compensates displacement and the installation deviation of expanding with heat and contract with cold for industrial piping system, reduces the vibration of pipe-line system.For carrying the corrugated expansion joint using in the pipe-line system of strong corrosive media, must there is stronger corrosion resistance, prior art is that teflon bushing pipe is set in bellows, because teflon has stronger corrosion resistance, therefore, make corrugated expansion joint there is stronger corrosion resistance.This corrugated expansion joint exists lower column defects: the one, and the adhesive property of teflon and metal is poor, and teflon bushing pipe can not paste on bellows inwall well; The 2nd, teflon quality is softer, and structural strength is poor, and fragile under long-time alternate load effect, the working life of corrugated expansion joint is short.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of adhesive property and teflon liner tube structure intensity that can significantly improve teflon bushing pipe and bellows inwall, the resistance to negative pressure in significant prolongation working life, anti-corrosion-resistant corrugated expansion joint.
The present invention is achieved through the following technical solutions technical goal.
Resistance to negative pressure, anti-corrosion-resistant corrugated expansion joint, comprise bellows, adpting flange; Described bellows is connected with the adpting flange at two ends, forms bellows collocation structure, is provided with teflon bushing pipe in described bellows; Described teflon bushing pipe sticks on bellows inwall; Its improvements are: described teflon bushing pipe is composited through High Temperature High Pressure hot melt by glass fiber cloth and the outer field polytetrafluoroethylene floor of internal layer; In described polytetrafluoroethylene floor, clinkering has wire netting.
In said structure, the unit grid in described wire netting is quadrilateral structure, quadrilateral two diagonals respectively with bellows axially, radially consistent.
In said structure, the outside of described wire netting is coated layer of glass enhancement layer; The clinkering together with wire netting of described glass fiber reinforced layer, in polytetrafluoroethylene floor, and is clipped in the middle wire netting bag together with glass fiber cloth; Fabric in described glass fiber reinforced layer is glass fiber cloth.
In said structure, in described bellows outer wall annular groove, be provided with stiffening ring.
In said structure, described stiffening ring is made up of ringle and the teflon outer that is coated on ringle outer wall.
The present invention compared with prior art, has following good effect:
1, teflon bushing pipe is composited through High Temperature High Pressure hot melt by glass fiber cloth and the outer field polytetrafluoroethylene floor of internal layer, because glass fiber cloth and metal have good adhesive property, therefore teflon bushing pipe can be bonded on bellows inwall well, makes the present invention have good resistance to negative pressure performance.
2, clinkering has wire netting in polytetrafluoroethylene floor, because wire netting has higher intensity and toughness, therefore, significantly improves intensity and the toughness of teflon bushing pipe, makes teflon bushing pipe not fragile, significant prolongation working life of the present invention.
3, the unit grid in wire netting is quadrilateral structure, quadrilateral two diagonals respectively with bellows axially, radially consistent, like this, therefore, power concentrates in unit grid two diagonals, unit grid distortion easily, is difficult for being pulled off.
4, the coated layer of glass enhancement layer in the outside of wire netting is clipped in the middle wire netting bag together with glass fibre bottom, has protected wire netting, further improves intensity and the toughness of teflon bushing pipe, further extends working life of the present invention.
5, in bellows outer wall annular groove, be provided with stiffening ring, can improve the resistance to malleation ability of corrugated expansion joint.
6, stiffening ring is made up of ringle and the teflon outer that is coated on ringle outer wall, can avoid bellows outer wall directly to contact with the ringle of stiffening ring, thereby avoid direct friction, effectively protects bellows.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is I place partial enlarged drawing in Fig. 1.
Fig. 3 is the structural representation of wire netting unit grid.
Embodiment
The invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments below.
Resistance to negative pressure shown in accompanying drawing, anti-corrosion-resistant corrugated expansion joint, comprise bellows 2, adpting flange 1; Bellows 2 is connected with the adpting flange 1 at two ends, forms bellows collocation structure, is provided with teflon bushing pipe 3 in bellows 2; Teflon bushing pipe 3 sticks on bellows 2 inwalls; Teflon bushing pipe 3 is composited through High Temperature High Pressure hot melt by glass fiber cloth 3.1 and the outer field polytetrafluoroethylene floor 3.2 of internal layer; The interior clinkering of polytetrafluoroethylene floor 3.2 has wire netting 3.3; Unit grid in wire netting 3.3 is quadrilateral structure, quadrilateral two diagonals respectively with bellows 2 axially, radially consistent.
The coated layer of glass enhancement layer 3.4 in outside of wire netting 3.3; Glass fiber reinforced layer 3.4 clinkering together with wire netting 3.3, in polytetrafluoroethylene floor 3.2, and is clipped in the middle wire netting 3.3 bag together with glass fiber cloth 3.1; Fabric in glass fiber reinforced layer 3.4 is glass fiber cloth.
In bellows 2 outer wall annular grooves, be provided with stiffening ring 4, in the present embodiment, stiffening ring 4 is made up of ringle 4.1 and the teflon outer that is coated on ringle 4.1 outer walls.
Claims (5)
1. resistance to negative pressure, an anti-corrosion-resistant corrugated expansion joint, comprise bellows (2), adpting flange (1); Described bellows (2) is connected with the adpting flange (1) at two ends, forms bellows collocation structure, is provided with teflon bushing pipe (3) in described bellows (2); Described teflon bushing pipe (3) sticks on bellows (2) inwall; It is characterized in that: described teflon bushing pipe (3) is composited through High Temperature High Pressure hot melt by glass fiber cloth (3.1) and the outer field polytetrafluoroethylene floor (3.2) of internal layer; The interior clinkering of described polytetrafluoroethylene floor (3.2) has wire netting (3.3).
2. resistance to negative pressure according to claim 1, anti-corrosion-resistant corrugated expansion joint, it is characterized in that: the unit grid in described wire netting (3.3) is quadrilateral structure, quadrilateral two diagonals respectively with bellows (2) axially, radially consistent.
3. resistance to negative pressure according to claim 1, anti-corrosion-resistant corrugated expansion joint, is characterized in that: the coated layer of glass enhancement layer (3.4) in outside of described wire netting (3.3); Described glass fiber reinforced layer (3.4) clinkering together with wire netting (3.3), in polytetrafluoroethylene floor (3.2), and is clipped in the middle wire netting (3.3) bag together with glass fiber cloth (3.1); Fabric in described glass fiber reinforced layer (3.4) is glass fiber cloth.
4. according to the resistance to negative pressure one of claim 1～3 Suo Shu, anti-corrosion-resistant corrugated expansion joint, it is characterized in that: in described bellows (2) outer wall annular groove, be provided with stiffening ring (4).
5. resistance to negative pressure according to claim 4, anti-corrosion-resistant corrugated expansion joint, is characterized in that: described stiffening ring (4) is made up of ringle (4.1) and the teflon outer that is coated on ringle (4.1) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410282432.6A CN104110554A (en) | 2014-06-23 | 2014-06-23 | Negative-pressure-resistant and anti-corrosion corrugated pipe compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410282432.6A CN104110554A (en) | 2014-06-23 | 2014-06-23 | Negative-pressure-resistant and anti-corrosion corrugated pipe compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104110554A true CN104110554A (en) | 2014-10-22 |
Family
ID=51707471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410282432.6A Pending CN104110554A (en) | 2014-06-23 | 2014-06-23 | Negative-pressure-resistant and anti-corrosion corrugated pipe compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104110554A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763849A (en) * | 2015-03-24 | 2015-07-08 | 苏州新区华士达工程塑胶有限公司 | Polytetrafluoroethylene corrugated pipe |
| CN107300022A (en) * | 2017-08-11 | 2017-10-27 | 南通市扬子橡塑有限公司 | The ripple pipe clip valve of the detachable dynamic sealing of body |
-
2014
- 2014-06-23 CN CN201410282432.6A patent/CN104110554A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763849A (en) * | 2015-03-24 | 2015-07-08 | 苏州新区华士达工程塑胶有限公司 | Polytetrafluoroethylene corrugated pipe |
| CN107300022A (en) * | 2017-08-11 | 2017-10-27 | 南通市扬子橡塑有限公司 | The ripple pipe clip valve of the detachable dynamic sealing of body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141022 |