Title:
ANTICORROSION INSULATION MULTILAYER SYSTEM FOR DEEP-SEA STEEL DELIVERY PIPES
Document Type and Number:
WIPO Patent Application WO/2016/090835
Kind Code:
A1
Abstract:
An anticorrosion insulation multilayer system for deep-sea steel delivery pipes, which is composed of at least five-layer structure: a phenolic epoxy powdered paint (2) sprayed on the surface of a steel pipe (1); a polyamide insulation layer (4) covered on the phenolic epoxy powdered paint (2); a foamed polypropylene layer (6) covered on the polyamide insulation layer (4); a polyvinylidene chloride isolating layer (8) covered on the foamed polypropylene layer (6); a hard polypropylene anticorrosion layer (10) covered on the polyvinylidene chloride isolating layer (8); the layers are connected by a glue layer with each other to achieve the optimal effects of corrosion resistance, thermal insulation, collision prevention and scratch prevention. The multilayer system can be applicable to steel pipes delivering a medium at a temperature not higher than 160ºC, can be applicable to deep sea with a depth of water less than 600 m, can prevent the phenomenon of waxing in the steel pipes caused by excess drop of petroleum temperature during a long-distance delivery and can ensure the anticorrosion insulation and long-term stable operation of the steel delivery pipes.
Inventors:
QIU LEI (CN)
DING WUBIN (CN)
RUAN LONGJUN (CN)
DING WUBIN (CN)
RUAN LONGJUN (CN)
Application Number:
PCT/CN2015/078297
Publication Date:
June 16, 2016
Filing Date:
May 05, 2015
Export Citation:
Assignee:
SHANGHAI HILONG PETROCHEMICAL RES INST (CN)
SHANGHAI HILONG SHINE NEW MATERIAL CO LTD (CN)
HILONG GROUP OF COMPANIES (CN)
SHANGHAI HILONG SHINE NEW MATERIAL CO LTD (CN)
HILONG GROUP OF COMPANIES (CN)
International Classes:
F16L58/10; C09D5/08; F16L57/00; F16L59/00
Domestic Patent References:
| WO2014028444A2 | 2014-02-20 |
Foreign References:
| CN104482328A | 2015-04-01 | |||
| CN201982816U | 2011-09-21 | |||
| CN104500923A | 2015-04-08 | |||
| CA2778986A1 | 2011-05-05 |
Attorney, Agent or Firm:
SHANGHAI ESSEN PATENT & TRADEMARK AGENCY (CN)
上海翼胜专利商标事务所（普通合伙） (CN)
上海翼胜专利商标事务所（普通合伙） (CN)
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