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    • 4. 发明公开
    • FLEXIBLE PIPE
    • 灵活的管道
    • EP3208508A1
    • 2017-08-23
    • EP15850649.3
    • 2015-10-06
    • Daikin Industries, Ltd.
    • MURAKAMI, ShinyaINABA, TakeshiKITAHARA, TakahiroKUWAJIMA, Yuuki
    • F16L11/08C08J5/00E21B17/01
    • F16L11/08C08F214/182C08F214/22C08F214/26C08F214/262C08G2650/40C08J5/00C08J2327/18E21B17/01
    • The present invention provides a flexible pipe having excellent blister resistance in a high-temperature and high-pressure environment even though including a thick resin pipe. The flexible pipe includes a resin pipe having a thickness of greater than 5 mm. The resin pipe is formed from a resin having a CO 2 permeability coefficient P(CO 2 ) of 20 × 10 -9 cm 3 ·cm/cm 2 ·s·cmHg or lower at 150°C, a CH 4 permeability coefficient P(CH 4 ) of 10 × 10 -9 cm 3 ·cm/cm 2 ·s·cmHg or lower at 150°C, a ratio D(CO 2 )/S(CO 2 ) between a CO 2 diffusion coefficient D(CO 2 ) and a CO 2 solubility coefficient S(CO 2 ) of 3 × 10 -5 Pa·m 2 /s or higher at 150°C, and a ratio D(CH 4 )/S(CH 4 ) between a CH 4 diffusion coefficient D(CH 4 ) and a CH 4 solubility coefficient S(CH 4 ) of higher than 15 × 10 -5 Pa·m 2 /s at 150°C.
    • 本发明提供即使包括厚的树脂管,也能够在高温高压环境下具有优异的耐起泡性的挠性管。 柔性管包括厚度大于5mm的树脂管。 树脂管由150℃下的CO 2渗透系数P(CO 2)为20×10 -9 cm 3·cm / cm 2·s·cmHg以下的树脂,10×的CH 4渗透系数P(CH 4) 在150℃下为10-9cm3·cm / cm2·s·cmHg以下,CO2扩散系数D(CO2)与CO2溶解度系数S(CO2)之比为D(CO2)/ S(CO2) 在150℃时为10 -5 Pa·m 2 / s以上,CH 4扩散系数D(CH 4)与CH 4溶解度系数S(CH 4)的比D(CH 4)/ S(CH 4) 在150℃下×10 -5 Pa·m 2 / s。