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    • 71. 发明授权
    • Microdistillation method
    • 微蒸法
    • US5304287A
    • 1994-04-19
    • US652186
    • 1991-02-07
    • Scott Stieg
    • Scott Stieg
    • B01D3/38G01N1/40G01N25/14B01D3/00
    • B01D3/38G01N1/40G01N25/14G01N2001/4033Y10S159/27Y10S159/28Y10S159/41Y10S159/42Y10S203/02Y10T436/255
    • A microdistillation method for the quantitative steam distillation of cyanide, phenolic compounds, hydrogen fluoride, ammonia, sulfites and other volatile analyte compounds from samples of environmental waters and sludge for their subsequent analysis involves volatilizing the water in the sample tube of a microdistillation column. The pressure which develops due to the water vapor forces all volatile compounds from the water sample, including the water itself, through a hydrophobic membrane and into the collector tube of the microdistillation column. The volatile compounds and the water vapor condense in the cooler collector tube and are quantitatively trapped and retained over the membrane. Relatively small samples may be distilled.
    • 用于对环境水和污泥样品中的氰化物,酚类化合物,氟化氢,氨,亚硫酸盐和其他挥发性分析物进行定量蒸汽蒸馏的微蒸馏方法用于随后的分析,包括使微量蒸馏塔的样品管中的水挥发。 由于水蒸汽而产生的压力迫使来自水样品的所有挥发性化合物(包括水本身)通过疏水膜并进入微量蒸馏塔的收集管。 挥发性化合物和水蒸汽冷凝在冷却器收集管中并定量捕获并保留在膜上。 可以蒸馏相对较小的样品。
    • 72. 发明授权
    • Clogging indicator for controlling sodium quality
    • 控制钠质量的指示剂
    • US5193382A
    • 1993-03-16
    • US735784
    • 1991-07-25
    • Christian LatgeGuy LemercierBernard PuechGeorges Jullien
    • Christian LatgeGuy LemercierBernard PuechGeorges Jullien
    • G01N25/14G01N33/20G21C17/02G21C17/025G21C19/30
    • G01N33/206G01N25/14G21C17/025
    • The clogging indicator makes it possible to continuously measure the purity of sodium circulating in the circuits of a fast neutron reactor without requiring the dismantling or completely changing the indicator should the measuring section becomes clogged. The clogging indicator essentially includes a bypass pipe comprising one coaxial external section (8) and one coaxial internal section (9). A measuring head (10) is mounted and able to move between these two sections and is mainly composed of at least one thermoelement (24) and one mobile grid (22) causing the measuring section to vary and thus the measured flow so as to favor uncloggings and the dissolving of any impurities crystallized during the measurements. This unit is completed by the other main elements of the clogging indicator in an elongated longitudinal body and surrounded by a thermic exchanger (11) for cooling the sodium.
    • 堵塞指示器可以连续地测量在快中子反应器的回路中循环的钠的纯度,而不需要拆卸或如果测量部分堵塞则完全改变指示器。 堵塞指示器基本上包括包括一个同轴外部部分(8)和一个同轴内部部分(9)的旁通管。 测量头(10)安装并且能够在这两个部分之间移动,并且主要由至少一个热电偶(24)和一个移动网格(22)组成,使得测量部分变化,并且因此测量流量有利于 在测量期间结晶的任何杂质的溶解和溶解。 该单元由延长的纵向主体中的堵塞指示器的其它主要元件完成,并被用于冷却钠的热交换器(11)包围。
    • 79. 发明授权
    • Pyroelectric gas sensor
    • 热电气体传感器
    • US4551425A
    • 1985-11-05
    • US425400
    • 1982-09-28
    • Jay N. Zemel
    • Jay N. Zemel
    • G01N25/14G01N25/48G01N30/00C12Q1/00G01N25/32
    • G01N25/4873G01N25/14G01N30/00Y10S435/807
    • A pyroelectric substrate is provided with a heater and at least one set of electrodes for sensing charge redistributions due to changes in the substrate temperature. In a preferred embodiment, there are two interdigitated electrodes, one coated with an absorber/desorber material. The heater pulsatingly raises the temperature of the substrate past the desorption temperature of a fluid of interest. If the fluid was exposed to the absorber/desorber material prior to heating, a portion of the fluid will have been absorbed. When the substrate reaches the desorption temperature, additional heat pulses will not increase the substrate temperature significantly until the fluid has desorbed. Thus, heat used in changing state does not raise the substrate temperature and, lacking a temperature change, reduces the charge redistribution sensed by the electrode coated with the material. Its output is compared with the uncoated electrode (whose temperature continues to rise) and the difference is equal to the amount of fluid desorbed and the temperature is indicative of the species of fluid desorbed.
    • 热电基板设置有加热器和用于感测由于基板温度的变化引起的电荷再分布的至少一组电极。 在优选实施例中,存在两个交错电极,一个涂覆有吸收器/解吸器材料。 加热器脉动地升高衬底的温度超过感兴趣的流体的解吸温度。 如果在加热之前将流体暴露于吸收器/解吸器材料,则一部分流体将被吸收。 当衬底达到解吸温度时,额外的热脉冲将不会明显增加衬底温度直到流体解吸。 因此,在改变状态下使用的热量不会升高衬底温度,并且没有温度变化会降低由涂覆材料的电极感测到的电荷再分布。 将其输出与未涂覆的电极(其温度继续上升)进行比较,其差异等于解吸的流体的量,温度表示解吸的流体的种类。