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39 条记录 (耗时 0.022 秒)

    Measurement and control of multicomponent liquid systems
    21.
    发明授权
    Measurement and control of multicomponent liquid systems 失效
    多组分液体系统的测量和控制

    公开(公告)号：US4228815A

    公开(公告)日：1980-10-21

    申请号：US868648

    申请日：1978-01-11

    申请人： Richard Juffa ,  Georg Wawra ,  Walter Uerdingen

    发明人： Richard Juffa ,  Georg Wawra ,  Walter Uerdingen

    IPC分类号： G01F1/704 ,  G05D7/06 ,  G05D11/13

    CPC分类号： G05D7/0635 ,  G01F1/7044 ,  G05D11/132 ,  Y10T137/0329 ,  Y10T137/0368 ,  Y10T137/2514

    摘要： The method is based on the fact that the particular components are conveyed through separate pipes into a mixing chamber. By measuring the transit time in at least one of the pipes the flowrate can be measured. The flow in the other pipes which is in a fixed ratio to the first flow is then adjusted automatically. For measuring the transit time a heat pulse is injected in at least one of the pipes and the transit time of the heat impulse is measured. The so-measured transit time is converted into an inversely proportional voltage and the flowrate in the other pipes is adjusted proportionally to this voltage. An apparatus is provided for practicing the method. The apparatus comprises flow measuring elements which are electrical connected to control devices which operate flow control devices in the pipes leading to the mixing chamber.

    摘要翻译： 该方法基于以下事实：特定组分通过单独的管道输送到混合室中。 通过测量至少一个管道中的通过时间，可以测量流量。 然后自动调整与第一流量固定比例的其他管道中的流量。 为了测量在至少一个管道中注入热脉冲的通过时间，并测量热脉冲的通过时间。 如此测量的通过时间被转换为反比例的电压，并且其他管道中的流量被调整成与该电压成正比。 提供了一种用于实施该方法的装置。 该装置包括流量测量元件，其电连接到控制装置，该控制装置操作通向混合室的管道中的流量控制装置。

    Two stage process for the production of molded articles
    23.
    发明授权
    Two stage process for the production of molded articles 失效
    用于生产模制品的两阶段工艺

    公开(公告)号：US4788224A

    公开(公告)日：1988-11-29

    申请号：US131959

    申请日：1987-12-11

    申请人： Hanns P. Muller ,  Walter Uerdingen ,  Heinrich Heine

    发明人： Hanns P. Muller ,  Walter Uerdingen ,  Heinrich Heine

    IPC分类号： B29C45/00 ,  C08G18/00 ,  C08G18/04 ,  C08G18/08 ,  C08G18/10 ,  C08G18/16 ,  C08G18/18 ,  C08G18/30 ,  C08G18/58 ,  C08G18/63 ,  C08G18/14

    CPC分类号： C08G18/637 ,  C08G18/003 ,  C08G18/04 ,  C08G18/089 ,  C08G18/1875 ,  C08G2101/00 ,  C08G2105/02 ,  C08G2150/20

    摘要： Molded articles are produced in a two-stage process. In the first stage, an organic polyisocyanate is reacted with an organic compound containing at least two epoxide groups (NCO: epoxide equivalent ratio of 1.2:1 to 500:1) in the presence of a tertiary amine catalyst. This reaction is stopped when no more than 65% of the isocyanate groups have reacted by adding an alkylating sulfonic acid alkyl ester of methyl iodide and/or of dimethyl sulfate in an amount equivalent to the amount of tertiary amine catalyst present. A latent catalyst capable of being activated by heat is subsequently added to the intermediate product and the resultant mixture is heated in a mold to complete the crosslinking of the intermediate product and to form the molded article.

    摘要翻译： 模制品在两阶段工艺中生产。 在第一阶段中，在叔胺催化剂的存在下，有机多异氰酸酯与含有至少两个环氧基团的有机化合物（NCO：环氧当量比为1.2:1至500:1）反应。 当不超过65％的异氰酸酯基团通过加入等量于叔胺催化剂存在量的甲基碘和/或硫酸二甲酯的烷基化磺酸烷基酯反应时，停止该反应。 随后将能够被热活化的潜催化剂加入到中间产物中，并将所得混合物在模具中加热以完成中间产物的交联并形成模塑制品。

    Method of determining liquid flow in a conduit
    28.
    发明授权
    Method of determining liquid flow in a conduit 失效
    确定管道中液体流动的方法

    公开(公告)号：US4228683A

    公开(公告)日：1980-10-21

    申请号：US896825

    申请日：1978-04-17

    申请人： Richard Juffa ,  Georg Wawra ,  Walter Uerdingen

    发明人： Richard Juffa ,  Georg Wawra ,  Walter Uerdingen

    IPC分类号： G01F1/704 ,  G05D7/06 ,  G05D11/13 ,  G01F1/68 ,  G01F1/70

    CPC分类号： G05D11/132 ,  G01F1/7044 ,  G05D7/0635

    摘要： The instant invention provides a method for determining the streaming velocity of a streaming liquid by injecting a thermopulse into the liquid and measuring its transit time. The pulse is detected by its ascending flank at downstream points and by its ascending or descending flank at its point of injection. For short transit times, provision is made to eliminate the heat up time of the heating wire imparting the pulse from the transit time measurement. The liquid may stream continuously or discontinuously, and if the later, provision is made to delay measurement on initiation of flow until the flow pattern has stabilized. The time is determined by counting pulses from a pulse generator during the period the pulse is traveling between the point of injection and a detection point or between two detection points.

    摘要翻译： 本发明提供了一种通过将热脉冲注入液体并测量其通过时间来确定流动液体的流速的方法。 脉冲在其下游点的上升侧面及其在注射点的上升或下降侧面被检测。 对于短的运输时间，提供消除从通过时间测量传递脉冲的加热线的加热时间。 液体可以连续或不连续地流动，并且如果稍后提供延迟流量开始时的测量，直到流动模式已经稳定。 在脉冲在注射点和检测点之间或在两个检测点之间行进的时段期间，脉冲发生器的脉冲计数确定时间。