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5 条记录 (耗时 0.049 秒)

    Double block valve with proving system
    4.
    发明授权
    Double block valve with proving system 失效
    双截止阀带验证系统

    公开(公告)号：US06968851B2

    公开(公告)日：2005-11-29

    申请号：US10120899

    申请日：2002-04-11

    申请人： James Ramirez ,  Edward Dorsey ,  Thomas Zich ,  Dennis Wagner

    发明人： James Ramirez ,  Edward Dorsey ,  Thomas Zich ,  Dennis Wagner

    IPC分类号： F16K1/44 ,  F16K37/00 ,  F16K51/02 ,  F16K11/20

    CPC分类号： F16K51/02 ,  F16K1/446 ,  F16K37/00 ,  F16K37/0091 ,  Y10T137/0318 ,  Y10T137/5762 ,  Y10T137/8326 ,  Y10T137/86083 ,  Y10T137/88046

    摘要： A double block valve and a valve proving system are disclosed. The double block valve is actuated by a single actuator and includes a valve body housing a cavity. The cavity defines an upstream portion with a fluid inlet and a downstream portion with a fluid outlet. A seating assembly is interposed between the upstream and the downstream portions. A first and a second blocking element are disposed in the valve body and are both movable within the cavity between opened and closed positions. With the first and second blocking elements both contacting the seating assembly, the space therebetween defines an enclosed space with a finite volume. The proving system is used for two safety shut-off valves on a valve train, such as a double block valve. The proving system connects to an enclosed space established between the two safety shut-off valves and includes a pair of three-way valves, oppositely biased pressure switches, and a pump, all of which are interconnected through pneumatic conduits. The proving system uses pressure accumulation and timed decay to determine the integrity of the two safety shut-off valves of the valve train.

    摘要翻译： 公开了一种双截止阀和阀门检验系统。 双块阀由单个致动器致动并且包括容纳空腔的阀体。 空腔限定具有流体入口的上游部分和具有流体出口的下游部分。 在上游部分和下游部分之间插入座位组件。 第一和第二阻塞元件设置在阀体中，并且均可在打开位置和关闭位置之间的空腔内移动。 利用第一和第二阻挡元件两者接触座部组件，其间的空间限定了具有有限体积的封闭空间。 验证系统用于阀门上的两个安全截止阀，例如双块阀。 证明系统连接到两个安全截止阀之间建立的封闭空间，并包括一对三通阀，相对偏压的压力开关和一个泵，所有这些通过气动导管互连。 验证系统使用压力累积和定时衰减来确定气门机构的两个安全截止阀的完整性。

    Preparation of substituted pyridine N-oxide compounds
    5.
    发明授权
    Preparation of substituted pyridine N-oxide compounds 失效
    取代吡啶N-氧化物的制备

    公开(公告)号：US06806371B2

    公开(公告)日：2004-10-19

    申请号：US10674524

    申请日：2003-10-01

    申请人： Thomas Zich ,  Wolfgang Schiek ,  Markus Rössler ,  Christian Seifter

    发明人： Thomas Zich ,  Wolfgang Schiek ,  Markus Rössler ,  Christian Seifter

    IPC分类号： C07D21302

    CPC分类号： C07D213/89

    摘要： A process for preparing substituted pyridine N-oxide compounds of the formula in which R1, R2, R3 and R4 are each H, a carboxyl group or a C1-C12-alkyl radical which may contain atoms from the group of N, O and S, or R1 and R2 and/or R3 and R4 together may each form an optionally substituted C4-C20-alkylene radical which may contain atoms from the group of N, O and S, A is benzyl or a (CH2)m group where m may be an integer from 1 to 12, Z1 and Z2 are each independently O or S, and Y is H, a C1-C12-alkyl radical which may optionally contain atoms from the group of N, O and S, a C6-C20-aryl radical or a C5-C20-heterocycle, and the radicals may optionally be substituted, or Z2 and Y together form an optionally substituted ring or ring system, in which case the ring or ring system may contain atoms from the group of N, O and S, from the corresponding 4-halopyridine N-oxide of the formula in which X is chlorine, bromine or iodine, by reacting the compound of the formula (II), in the presence of a phase transfer catalyst and of a base, with a compound of the formula HZ1-A-Z2-Y  (III) in which Z1, Z2, A and Y are each as defined above, at a temperature up to the reflux temperature, to give the corresponding substituted pyridine N-oxide compound of the formula (I), and also a process for preparing the compound of the formula (II).

    摘要翻译： R1，R2，R3和R4各自为H，可含有N，O和S基团的原子的羧基或C 1 -C 12烷基的取代的吡啶N-氧化物的制备方法， 或R 1和R 2和/或R 3和R 4可以各自形成任选取代的C 4 -C 20亚烷基，其可以含有来自N，O和S的基团的原子，A是苄基或（CH 2）m基团，其中可以是 1至12的整数，Z 1和Z 2各自独立地为O或S，Y为H，可任选地含有来自N，O和S基团的原子的C 1 -C 12 - 烷基，C 6 -C 20 - 芳基 基团或C 5 -C 20杂环，并且基团可以任选被取代，或Z 2和Y一起形成任选取代的环或环系，在这种情况下，环或环系可以含有来自N，O和 S，通过式（II）化合物在式（II）化合物的存在下，由式（II）的化合物与式（Ⅱ）的化合物反应，得自X为氯，溴或碘的式（Ⅲ）的相应的4-卤代吡啶N-氧化物 相转移催化剂和碱，其中式为Z1，Z2，A和Y的化合物各自如上所定义，在至回流温度的温度下，得到相应的取代的吡啶N-氧化物，式 （I）化合物的制备方法，以及制备式（II）化合物的方法。