ORTHOTROPIC ELASTIC METAL MEMBRANE
    389.
    发明公开
    ORTHOTROPIC ELASTIC METAL MEMBRANE 审中-公开
    ORTHOTROPE ELASTISCHE METALLMEMBRAN

    公开(公告)号:EP2279939A2

    公开(公告)日:2011-02-02

    申请号:EP09734527.6

    申请日:2009-04-15

    Abstract: The present invention concerns a metal membrane for a low-temperature-fluid storage tank wherein longitudinal and transverse corrugations are formed and both corrugations intersect each other. In the intersection of the corrugations, a bidirectional expandable member connected to each corrugation is formed so that the bidirectional expandable member is longitudinally and transversely expandable. The bidirectional expandable member is protruded and is shaped like a pyramid, a dome or a cross. Each metal membrane is welded into a unit panel and the edge of each metal membrane is welded with the common edge of another adjacent metal membrane to keep a cargo warehouse air-tight, and ultra-low-temperature LNG is stored inside the cargo warehouse, so when the metal membrane contracts due to thermal deviation, the present invention reduces plane rigidity and, at the same time, equalizes plane rigidity of two intersecting directions. Accordingly, durability is improved, air-tightness is maintained and storage of low-temperature liquid is stabilized, regardless of extreme thermal deviation. Furthermore, fabrication of the storage tank is improved because the present metal membrane is easily clamped by a clamping unit of a welding robot or a transfer device.

    Abstract translation: 本发明涉及用于低温液体储罐的金属膜,其中形成纵向和横向波纹并且两个波纹彼此相交。 在波纹的交叉处,形成连接到每个波纹的双向可膨胀元件,使得双向可膨胀元件纵向和横向可膨胀。 双向可扩展构件突出并且形状如锥体,圆顶或十字形。 每个金属膜被焊接到单元面板中,并且每个金属膜的边缘与另一相邻金属膜的共同边缘焊接以保持货物仓库气密,并且超低温LNG储存在货物仓库内, 因此当金属膜由于热偏差而收缩时,本发明降低了平面刚度,并且同时平衡了两个相交方向的平面刚度。 因此,与极端的热偏差无关,耐久性得到改善,保持气密性,低温液体的保存稳定。 此外,由于本发明的金属膜容易被焊接机器人或转印装置的夹紧单元夹紧,所以改善了储罐的制造。

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