Heat transfer tubing for natural gas evaporator
    92.
    发明授权
    Heat transfer tubing for natural gas evaporator 失效
    天然气蒸发器换热管

    公开(公告)号:US4367791A

    公开(公告)日:1983-01-11

    申请号:US199529

    申请日:1980-10-22

    Inventor: Takayoshi Asami

    Abstract: A heat transfer tube for a water-spray-panel evaporator for the gasification of liquefied natural gases which includes a tube having a pair of planar members each projecting outwardly from its peripheral surface, radially with respect to its longitudinal axis and extending longitudinally along such axis, and an internal fin disposed within the tube and having at least three fin members each projecting radially with respect to the longitudinal axis to provide a helical formation extending along and about the longitudinal axis, the helix of the helical formation contacting the internal wall of the tube in a pressure-fitting relationship. The heat transfer tubes can be assembled to form a panel evaporator. The method for fabricating such heat transfer tubes and assemblies is characterized in that the above pressure-fitting relationship is established by drawing the tube alone to reduce its internal diameter until the helix of the helicoid is abutted against the internal wall of the tube.

    Abstract translation: 一种用于气化液化天然气的喷水面板蒸发器的传热管,其包括具有一对平面构件的管,该管具有一对平面构件,每个平面构件的圆周表面相对于其纵向轴线径向向外延伸并沿该轴线纵向延伸 以及设置在管内并具有至少三个翅片构件的内翅片,每个翼片构件相对于纵向轴线径向地突出,以提供沿着纵向轴线延伸并围绕纵向轴线延伸的螺旋形结构,螺旋形构件的螺旋接触 管压力关系。 传热管可以被组装以形成面板蒸发器。 制造这种传热管和组件的方法的特征在于,通过单独拉制管以减小其内径来建立上述压配合关系,直到螺旋螺旋的螺旋抵靠管的内壁。

    Liquified gas pumping and cylinder re-fill system
    93.
    发明授权
    Liquified gas pumping and cylinder re-fill system 失效
    液化气抽气和气缸再填充系统

    公开(公告)号:US4351372A

    公开(公告)日:1982-09-28

    申请号:US083825

    申请日:1979-10-11

    Abstract: A pumping system for filling pressurized gas cylinders from a relatively lower pressure, liquified supply of that gas, for example CO.sub.2, by means of a system comprising a CO.sub.2 /air-driven motor driving the liquified gas into the cylinder. The system is primed until liquid begins to run. Thereafter the liquid is driven by the CO.sub.2 /air-driven motor into an empty cylinder. A particularly efficacious longitudinally reciprocating plunger pump for use in the system is disclosed (FIG. 4). The "air" driven motor is preferrably driven by CO.sub.2 vapor, particularly where CO.sub.2 is the liquified gas being pumped or where hazardous or toxic liquified gases are being pumped.

    Abstract translation: 一种泵送系统,用于通过包括CO 2 /空气驱动的马达将液化气体驱动到气缸中的系统从相对较低压力的气体(例如CO 2)的液化供应中填充加压气瓶。 系统被灌注直到液体开始运行。 此后,液体由CO 2 /空气驱动的电动机驱动到空的气缸中。 公开了一种用于该系统的特别有效的纵向往复式柱塞泵(图4)。 “空气”驱动的电动机最好由二氧化碳蒸汽驱动,特别是在泵送液化气体的地方,或者在泵送有害或有毒的液化气体的情况下。

    Re-heating cryogenic fluids
    94.
    发明授权
    Re-heating cryogenic fluids 失效
    再加热低温液体

    公开(公告)号:US4343156A

    公开(公告)日:1982-08-10

    申请号:US237736

    申请日:1981-02-24

    Inventor: Pierre Gauthier

    Abstract: This invention relates to the reheating of a cold cryogenic fluid by heat exchange with a warm liquid, commonly water. The cold cryogenic fluid first flows into a descending tube and then into a rising tube whereas the water trickles along the tubes and from an upper supply, as far as a base manifold. The invention is particularly applicable to the reheating and revaporization of liquified natural gas.

    Abstract translation: 本发明涉及通过与暖液(通常是水)的热交换来再加热冷的低温流体。 冷的低温流体首先流入下降管,然后流入上升的管,而水沿着管和从上部的供给部流出,直到基部歧管。 本发明特别适用于液化天然气的再加热和再汽化。

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