CN1237300C - Fluid composite pipe - Google Patents
Fluid composite pipe Download PDFInfo
- Publication number
- CN1237300C CN1237300C CN 03119200 CN03119200A CN1237300C CN 1237300 C CN1237300 C CN 1237300C CN 03119200 CN03119200 CN 03119200 CN 03119200 A CN03119200 A CN 03119200A CN 1237300 C CN1237300 C CN 1237300C
- Authority
- CN
- China
- Prior art keywords
- pipe
- metal
- fluid composite
- bellows
- protection
- 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.)
- Expired - Fee Related
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 239000012530 fluid Substances 0.000 title claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 56
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
Images
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to a fluid composite pipe for conveying liquid and gas. The corrugated pipe comprises a metal corrugated pipe and a metal protection pipe sleeved outside the metal corrugated pipe, wherein two ends of the metal corrugated pipe are respectively assembled with one end of a connecting pipe and are fixedly connected in a sealing way; the other end of the connecting pipe is respectively fixedly connected with the two ends of the metal protection pipe in a sealing way, and pipe joints are arranged at the two ends of the metal protection pipe; wherein, the pipe wall of the connecting pipe is provided with at least one small hole which is communicated with the clearance between the metal corrugated pipe and the metal protecting pipe. The fluid composite pipe of the invention balances the internal and external pressure of the corrugated pipe, prevents the corrugated pipe from being distorted, prolongs the service life greatly, reduces the maintenance time of equipment, is particularly used in enterprises of metallurgy, petrochemical industry and the like, reduces the production cost and has considerable economic benefit.
Description
Technical field
The present invention relates to a kind of fluid composite pipe, be used for the conveying of liquids and gases.
Background technique
Make the delivery element of liquids and gases with metal bellows; engineering and daily giving birth in the words early to be extensive use of; it has Placement flexibly; but in some specific Environmental Conditions; on the equipment in metallurgical and the petrochemical enterprise; because the tube wall of common metal bellows is thinner; so be easy to be subjected to acid and alkali corrosion and rugged environment to influence; bellows is damaged easily; particularly can not adapt to the requirement of Environmental Conditions temperature variation; so being had the composite pipe of protective tube replaces; but have pressure reduction between outer protective tube and the bellows He in the bellows, cause the distortion and the damage of bellows easily, pipeline is very low working life; even causing production accident, influence is produced and economic benefit.
Summary of the invention
In order to overcome the defective of prior art, the invention provides a kind of balance bellows external and internal pressure, prevent its distortion, the fluid composite pipe of long service life.
Fluid composite pipe of the present invention comprises the protection metal pipe of metal bellows and outer suit, and the metal bellows two ends are equipped with connecting tube one end respectively, and is sealedly connected and fixed; The other end of connecting tube is connected and fixed with protection metal pipe is sealed at both ends respectively, and the protection metal pipe two ends are provided with pipe joint; Wherein open an aperture on the tube wall of connecting tube at least, it is communicated with gap between metal bellows and the protection metal pipe.
Fluid composite pipe of the present invention wherein in protection metal pipe, passes connecting tube and metal bellows with metal bar, and the two ends of metal bar are fixing with the welding of metal coating inner tube wall respectively.
Fluid composite pipe of the present invention, wherein metal bellows is a corrugated stainless steel tubing, protection metal pipe is a Stainless Steel Tube.
Fluid composite pipe of the present invention is compared with independent use metal bellows, and prolong a lot working life, has reduced the engineering time of equipment, in enterprises such as metallurgical and petrochemical industry, has reduced cost of production, has certain economic benefits.
Description of drawings
Fig. 1 is a structural profile schematic representation of the present invention.
Embodiment
As seen from Figure 1, fluid composite pipe of the present invention comprises stainless steel metal bellows 1, protection metal pipe 2, metal connecting tube 3 and metallic pipe coupling 5.Corrugated stainless steel tubing 1 two ends are fixed with metal connecting tube 3 one end seal weldings respectively, and at corrugated stainless steel tubing 1 outside set metal protective tube 2, protection corrugated stainless steel tubing 1 is not subject to acid and alkali corrosion and rugged environment influence, damages bellows; The other end of metal connecting tube 3 is fixed with protection metal pipe 2 sealed at both ends welding respectively; Protection metal pipe 2 two ends are connected with flanged joint 5, are convenient to be connected with other parts, and this part structure is prior art.Feature of the present invention is to have aperture 4 on the tube wall of metal connecting tube 3, and it is communicated with gap between corrugated stainless steel tubing 1 and the protection metal pipe 2, can make the metal ripple put pipe 1 inside and outside pressure and keep balance.In protection metal pipe 2; pass connecting tube 3 and metal bellows 1 with metal bar; and (not drawing among the figure) fixed with the welding of protection metal pipe 2 inwalls respectively in the two ends of metal bar; its effect is to prevent that bellows 1 is because of the manifold pressure impetus; make bellows 1 distortion that is distorted, hinder flowing of fluid.
Corrugated stainless steel tubing 1 can be the bellows of other metallic material in the present embodiment.
Protection metal pipe 2 can be a straight tube, also can be bend pipe.
The metallic pipe coupling 5 at protection metal pipe 2 two ends can be multiple structural type, is applicable to different Placements.
The diameter and the length of fluid composite pipe of the present invention are not limit.
Claims (3)
1, a kind of fluid composite pipe comprises the protection metal pipe (2) of metal bellows (1) and outer suit, and metal bellows (1) two ends are equipped with connecting tube (3) one ends respectively, and is sealedly connected and fixed; The other end of connecting tube (3) respectively with sealed at both ends being connected and fixed of protection metal pipe (2), protection metal pipe (2) two ends are provided with pipe joint (5); It is characterized in that opening an aperture (4) at least on the tube wall of described connecting tube (3), it is communicated with gap between metal bellows (1) and the protection metal pipe (2).
2, fluid composite pipe according to claim 1 is characterized in that in described protection metal pipe (2), passes described connecting tube (3) and metal bellows (1) with metal bar, and the two ends of described metal bar are fixing with the welding of protection metal pipe (2) inwall respectively.
3, fluid composite pipe according to claim 1 and 2 is characterized in that described metal bellows (1) is a corrugated stainless steel tubing, and described protection metal pipe (2) is a Stainless Steel Tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119200 CN1237300C (en) | 2003-03-18 | 2003-03-18 | Fluid composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119200 CN1237300C (en) | 2003-03-18 | 2003-03-18 | Fluid composite pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1532443A CN1532443A (en) | 2004-09-29 |
| CN1237300C true CN1237300C (en) | 2006-01-18 |
Family
ID=34285011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03119200 Expired - Fee Related CN1237300C (en) | 2003-03-18 | 2003-03-18 | Fluid composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1237300C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5186236B2 (en) * | 2007-06-28 | 2013-04-17 | 日産自動車株式会社 | tube |
| CN103672297B (en) * | 2013-12-18 | 2015-12-09 | 西南石油大学 | A trenchless underground pipeline protection device |
| CN111219549A (en) * | 2020-04-07 | 2020-06-02 | 王德明 | Special metal corrugated connecting pipe for fire fighting |
-
2003
- 2003-03-18 CN CN 03119200 patent/CN1237300C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1532443A (en) | 2004-09-29 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060118 Termination date: 20110318 |