Thermoplastic liner for and method of overwrapping high pressure vessels
    43.
    发明授权
    Thermoplastic liner for and method of overwrapping high pressure vessels 失效
    热塑性衬垫和包裹高压容器的方法

    公开(公告)号:US5499739A

    公开(公告)日:1996-03-19

    申请号:US183452

    申请日:1994-01-19

    摘要: A pressure vessel liner for fuel tanks used to store high pressure gasses including methane or compressed natural gas includes thermoplastic materials exhibiting low permeability and mechanical properties resistant to thermal and pressurization strains over the operating cycle of the fuel tanks. The pressure vessel liner is made from a material selected from the group consisting of modified nylon 6 or nylon 11. The present invention also discloses a method of forming a reinforced composite fuel tank wherein the pressure vessel liner is overwrapped with both low-angle helical and high-angle helical filament windings. The high-angle helical windings are overwrapped around the liner across at least the cylinder-to-dome transition region at angles between 60.degree. and 88.degree. with respect to the longitudinal axis of the liner. High angle helical filament windings at these angles eliminate excessive composite windings typically added to account for weak transition points in these regions. The high-angle helical windings can be effectively wound without slippage, thereby providing a simplified overwrapping process and improved reinforced liner construction.

    摘要翻译: 用于存储包括甲烷或压缩天然气的高压气体的燃料箱的压力容器衬套包括在燃料箱的操作循环中对热和加压应变具有低渗透性和机械性能的热塑性材料。 压力容器衬里由选自改性尼龙6或尼龙11的材料制成。本发明还公开了一种形成增强复合材料燃料箱的方法,其中压力容器衬里用低角螺旋和 高角螺旋丝绕组。 高角螺旋绕组围绕衬套围绕至少圆柱到圆顶过渡区域相对于衬套的纵向轴线以60度和88度之间的角度被包裹。 这些角度的大角度螺旋细丝绕组消除了通常加在这些区域中的弱过渡点的过多复合绕组。 高角度螺旋绕组可以有效地卷绕而无滑动,从而提供简化的外包装工艺和改进的增强型衬里结构。