CN2818978Y - Petroleum pipeline with flexible polyurea external protective layer - Google Patents
Petroleum pipeline with flexible polyurea external protective layer Download PDFInfo
- Publication number
- CN2818978Y CN2818978Y CN 200520103656 CN200520103656U CN2818978Y CN 2818978 Y CN2818978 Y CN 2818978Y CN 200520103656 CN200520103656 CN 200520103656 CN 200520103656 U CN200520103656 U CN 200520103656U CN 2818978 Y CN2818978 Y CN 2818978Y
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- CN
- China
- Prior art keywords
- protective layer
- outer protective
- steel pipe
- flexible polyurea
- epoxy
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- 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 - Lifetime
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Abstract
The utility model relates to a petroleum pipeline with a flexible polyurea outer protective layer. The outer surface of the steel pipe 1 is orderly provided with an epoxy powder outer anticorrosive layer 3 and a flexible polyurea outer protective layer 4, and the inner surface of the steel pipe 1 is provided with an epoxy drag reduction undercoat layer. The flexible polyurea outer protective layer and the epoxy powder outer anticorrosive layer have good binding properties. The utility model has the advantages of good impact resistance, water prevention and corrosion resistance. The impact resistance can reach 23J. The utility model with simple production process is suitable for buried petroleum pipelines.
Description
Technical field
The utility model relates to a kind of transport pipe of flexible polyurea outer protective layer, is applicable to the buried oil pipeline road.
Background technique
Existing oil transport pipeline, adopt individual layer epoxy powder outer anti-corrosive coating, its deficiency be the corrosion-inhibiting coating impact resistance relatively poor, only for 11J, in pipeline transport and process of deployment, easily corrosion-inhibiting coating is damaged, and water proofing property is bad, is reduced the working life of oil transport pipeline, because inner-walls of duct is not handled through coating, inner-walls of duct is big to the frictional resistance of oil product, and oil transportation efficient is low.
The model utility content
The technical problems to be solved in the utility model: avoid above-mentioned deficiency of the prior art and a kind of transport pipe with flexible polyurea outer protective layer of good impact resistance, water proofing property is provided.
The technical solution adopted in the utility model
The transport pipe of a kind of flexible polyurea outer protective layer of the present utility model, by steel pipe 1, the reservation welding section 2 at steel pipe 1 two ends is formed, it is characterized in that epoxy powder external anti-corrosion layer 3 being arranged in turn at the outer surface of steel pipe 1, flexible polyurea outer protective layer 4, internal surface at steel pipe 1 has epoxy drag reduction undercoating 5, length 8～the 12m of steel pipe 1, internal diameter 400～800mm, wall thickness 12～26mm, reserve each long 100mm of welding section 2 every ends, the thickness of epoxy powder external anti-corrosion layer 3 is 0.2～0.5mm, the thickness of flexible polyurea outer protective layer 4 is 0.6～1.5mm, and the thickness of epoxy drag reduction undercoating 5 is 0.06～0.15mm.
The transport pipe of more excellent flexible polyurea outer protective layer, length 10m, the internal diameter 600mm, the wall thickness 16mm that it is characterized in that steel pipe 1, reserve each long 100mm of welding section 2 every ends, the thickness of epoxy powder external anti-corrosion layer 3 is 0.3mm, the thickness of flexible polyurea outer protective layer 4 is 1.0mm, and the thickness of epoxy drag reduction undercoating 5 is 0.12mm.
The transport pipe manufacture process of flexible polyurea outer protective layer of the present utility model is as follows: the internal surface of steel pipe is carried out derusting by sandblasting, internal surface at steel pipe 1 sprays epoxy drag reduction undercoating 5 then, after epoxy drag reduction undercoating 5 is solidified, the outer surface of steel pipe 1 is carried out derusting by sandblasting, and wrap up in the reservation welding section 2 at steel pipe 1 two ends with paper bag, at steel pipe 1 outer surface spraying epoxy powder external anti-corrosion layer 3, after epoxy powder external anti-corrosion layer 3 solidifies, at its outer surface heat spraying flexible polyurea outer protective layer 4, after solidifying, makes flexible polyurea outer protective layer 4 transport pipe of flexible polyurea outer protective layer, it is transported to the pipeline construction scene, and the welding repaired mouth is linked to be pipeline.
Flexible polyurea outer protective layer 4 is to solidify the coating that forms through hot spraying by the made coating of the curing agent of the liquid prepolymer of polyisocyanates and polyether polyol and amine terminated polyether and amine chainextender mixed solution.This coating has good impact resistance and water-fast vapour permeability, and its impact resistance reaches 23J.Epoxy drag reduction undercoating is to solidify the coating that forms through spraying by epoxy resin and the made coating of polyamide curing agent.
The utility model beneficial effect compared with prior art:
1, the transport pipe of flexible polyurea outer protective layer has good impact resistance, water proofing property and has lower oil transportation resistance, and its impact resistance reaches 23J.
2, production technology is simple, and price performance is good, and easy construction is applicable to the buried oil pipeline road.
Description of drawings
Fig. 1 is the longitudinal sectional view of the transport pipe of flexible polyurea outer protective layer of the present utility model.Among the figure: the 1-steel pipe; 2-reserves welding section; 3-epoxy powder external anti-corrosion layer; 4-flexible polyurea outer protective layer; 5-epoxy drag reduction undercoating.
Embodiment
The transport pipe of flexible polyurea outer protective layer, the length 10m of steel pipe 1, internal diameter 600mm, wall thickness 16mm reserve each long 100mm of welding section 2 every ends, and the thickness of epoxy powder external anti-corrosion layer 3 is 0.3mm, the thickness of flexible polyurea outer protective layer 4 is 1.0mm, and the thickness of epoxy drag reduction undercoating 5 is 0.12mm.Its flexible polyurea outer protective layer 4 is to solidify the coating that forms through hot spraying by the made coating of the curing agent of the liquid prepolymer of polyisocyanates and polyether polyol and amine terminated polyether and amine chainextender mixed solution.This coating has good impact resistance and water proofing property, and its impact resistance reaches 23J.
Claims (2)
1, a kind of transport pipe of flexible polyurea outer protective layer, by steel pipe (1), the reservation welding section (2) at steel pipe (1) two ends is formed, it is characterized in that epoxy powder external anti-corrosion layer (3) being arranged in turn at the outer surface of steel pipe (1), flexible polyurea outer protective layer (4), internal surface at steel pipe (1) has epoxy drag reduction undercoating (5), length 8～the 12m of steel pipe (1), internal diameter 400～800mm, wall thickness 12～26mm, reserve each long 100mm of the every end of welding section (2), the thickness of epoxy powder external anti-corrosion layer (3) is 0.2～0.5mm, the thickness of flexible polyurea outer protective layer (4) is 0.6～1.5mm, and the thickness of epoxy drag reduction undercoating (5) is 0.06～0.15mm.
2, the transport pipe of flexible polyurea outer protective layer according to claim 1, length 10m, the internal diameter 600mm, the wall thickness 16mm that it is characterized in that steel pipe (1), reserve each long 100mm of the every end of welding section (2), the thickness of epoxy powder external anti-corrosion layer (3) is 0.3mm, the thickness of flexible polyurea outer protective layer (4) is 1.0mm, and the thickness of epoxy drag reduction undercoating (5) is 0.12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520103656 CN2818978Y (en) | 2005-08-11 | 2005-08-11 | Petroleum pipeline with flexible polyurea external protective layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520103656 CN2818978Y (en) | 2005-08-11 | 2005-08-11 | Petroleum pipeline with flexible polyurea external protective layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2818978Y true CN2818978Y (en) | 2006-09-20 |
Family
ID=37005035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520103656 Expired - Lifetime CN2818978Y (en) | 2005-08-11 | 2005-08-11 | Petroleum pipeline with flexible polyurea external protective layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2818978Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664024A (en) * | 2017-11-01 | 2018-02-06 | 王立峰 | A kind of oil field anti-sticking sand control pipe |
-
2005
- 2005-08-11 CN CN 200520103656 patent/CN2818978Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664024A (en) * | 2017-11-01 | 2018-02-06 | 王立峰 | A kind of oil field anti-sticking sand control pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150811 Granted publication date: 20060920 |
|
| EXPY | Termination of patent right or utility model |