Process for thermal treatment of tubes
    1.
    发明授权
    Process for thermal treatment of tubes 失效
    管的热处理工艺

    公开(公告)号:US4252578A

    公开(公告)日:1981-02-24

    申请号:US10837

    申请日:1979-02-09

    IPC分类号: C21D9/08

    CPC分类号: C21D9/08 Y10S148/909

    摘要: Elongated steel tubes are grouped together and bound into bundles with bing sufficiently tight that there is no clearance or play between the tubes during heat treatment. Such binding provides a rigid mechanical assembly which prevents any lateral deformation of the tubes with respect to each other. Heat treatment is carried out while the tubes are tightly bound in bundles, and each bundle is supported in the furnace at least at several locations along its length to prevent deformation. The bundles are preferably of hexagon shape in section but can be of other geometric shapes. This technique results in heat treated tubes which are perfectly straight.

    摘要翻译: 细长的钢管被分组在一起,并结合成束,其结合足够紧,在热处理期间管之间没有间隙或游隙。 这种结合提供了一种刚性机械组件,其防止管相对于彼此的任何横向变形。 热管是在管束紧密结合的情况下进行的,并且每个束至少沿其长度的几个位置被支撑在炉中,以防止变形。 束优选为六边形剖面,但可具有其它几何形状。 这种技术导致热处理管是完全直的。

    Trapping tube adapted to be fitted at the outlet of a gas chromatograph
and device for supporting and presenting such a tube
    2.
    发明授权
    Trapping tube adapted to be fitted at the outlet of a gas chromatograph and device for supporting and presenting such a tube 失效
    捕集管适于安装在气相色谱仪的出口和用于支撑和呈现这种管的装置

    公开(公告)号:US4756725A

    公开(公告)日:1988-07-12

    申请号:US900680

    申请日:1986-08-27

    IPC分类号: G01N30/80 B01D15/08

    CPC分类号: G01N30/80

    摘要: This invention relates to a trapping tube characterized in that it is constituted by a shaped tube comprising:a first section or zone of condensation of the separated gaseous phase delivered by the outlet of the chromatograph,a second section or zone of confinement of the condensate of the separated gaseous phase,and a third section or zone of evacuation of the vector gas of the separated gaseous phase. The invention is more particularly applicable to the obtaining of condensates in a small, even infinite quantity.

    摘要翻译: 本发明涉及一种捕集管,其特征在于,其由成形管构成,该成形管包括:由色谱仪的出口输送的分离的气相的第一部分或冷凝区,第二部分或第 分离的气相,以及分离的气相的向量气体的第三部分或区域。 本发明更特别适用于获得小而均匀无限量的冷凝物。