Electromagnetic detector for metallic materials having an improved phase
detection circuit
    1.
    发明授权
    Electromagnetic detector for metallic materials having an improved phase detection circuit 失效
    具有改进的相位检测电路的金属材料的电磁检测器

    公开(公告)号:US4613815A

    公开(公告)日:1986-09-23

    申请号:US489175

    申请日:1983-04-27

    CPC classification number: G01V3/107

    Abstract: An electromagnetic detector device embodying a linear voltage differential transformer. A pair of coils of the differential transformer serve as pick-up coils connected in a detector circuit which is phase sensitive and capable of discriminating between signals representing a target metallic material, such as carbon steel particles trapped in a filter element, and signals induced by other metallic material, as well as stray signals including electrical noise. Input signals representing a target metallic material are fed to an operational amplifier circuit including a first non-inverting amplifier and a second inverting amplifier which produce a non-inverted signal and an inverted signal which are fed to an analog switch. The switch is operated as a chopper by a driver signal having a predetermined phase and the same frequency relative to the signal driving an input coil to the transformer. The phase of the driver signal is adjustable to provide phase discrimination. The coils of the transformer are wound on a core providing a sensor in which a filter element may be placed for test.

    Abstract translation: 一种体现线性电压差动变压器的电磁检测装置。 差动变压器的一对线圈用作连接在检测器电路中的拾波线圈,该检测器电路是相敏的并且能够区分表示目标金属材料的信号,例如被捕获在滤波元件中的碳钢颗粒和由 其他金属材料,以及杂散信号,包括电气噪声。 表示目标金属材料的输入信号被馈送到运算放大器电路,该运算放大器电路包括产生非反相信号的第一非反相放大器和第二反相放大器,反相放大器产生馈送到模拟开关的反相信号。 开关通过具有预定相位和相对于驱动输入线圈到变压器的信号的相同频率的驱动器信号作为斩波器操作。 驱动器信号的相位可调,以提供相位辨别。 变压器的线圈缠绕在提供传感器的芯上,其中可以放置过滤元件用于测试。

    Fluid treatment elements
    2.
    发明申请
    Fluid treatment elements 有权
    流体处理元件

    公开(公告)号:US20070007218A1

    公开(公告)日:2007-01-11

    申请号:US11515813

    申请日:2006-09-06

    Abstract: Fluid treatment elements substantially inhibit electrical charge imbalances and/or build-ups of electrical charges. A fluid treatment element may comprise a multilayer composite including an electrically conductive fibrous matrix, having an upstream side and a downstream side, disposed on a porous substrate, also having an upstream side and a downstream side, which supports the fibrous matrix. The fibrous matrix may include a combination of conductive and nonconductive fibers, wherein the conductive fibers include metal fibers and substantially inhibit an electrical charge and/or build-up of electrical charge. The conductive metal fibers of the electrically conductive fibrous matrix may comprise less than about 50% by weight of the conductive and nonconductive fibers and may have diameters in the range from about 1 μm or less to about 10 μm. The multilayer composite may also include a drainage layer positioned along one of the upstream side of the fibrous matrix and the downstream side of the porous substrate.

    Abstract translation: 流体处理元件基本上抑制电荷不均衡和/或积聚电荷。 流体处理元件可以包括多层复合材料,其包括具有上游侧和下游侧的导电纤维基质,该导电纤维基质设置在多孔基底上,该多孔基底还具有支撑纤维基质的上游侧和下游侧。 纤维基质可以包括导电纤维和非导电纤维的组合,其中导电纤维包括金属纤维并且基本上抑制电荷和/或积聚电荷。 导电纤维基质的导电金属纤维可以包含小于约50重量%的导电和非导电纤维,并且可以具有在约1μm或更小至约10μm的范围内的直径。 多层复合材料还可以包括沿着纤维基质的上游侧和多孔基材的下游侧定位的排水层。

    Adsorbent fractionator with automatic temperature-sensing cycle control
and process
    3.
    发明授权
    Adsorbent fractionator with automatic temperature-sensing cycle control and process 失效
    吸附式分馏器具有自动温度感应循环控制和过程

    公开(公告)号:US4832711A

    公开(公告)日:1989-05-23

    申请号:US581758

    申请日:1984-02-21

    CPC classification number: B01D53/30 B01D53/0454 B01D53/261 B01D2259/402

    Abstract: A method and apparatus are provided for adsorbing water vapor or other first gas from a mixture thereof with a second gas to reduce the water vapor or first gas concentration in the mixture to below a permissible maximum concentration, in which the advance of the leading edge of the adsorption front in a sorbent bed is detected by sensing the advance of the temperature front that precedes the adsorption front, and this advance is detected by sensing the temperature of the sorbent bed sufficiently far from the end of the bed to prevent the temperature front from leaving the bed, using a temperature sampling probe, when the temperature front reaches this point, the adsorption front is still a distance away, since it follows the temperature front, and the absorption cycle is discontinued, and the bed regenerated; the regeneration cycle can similarly be controlled independently, to be terminated when regeneration is complete, as detected by advance of the temperature front in the opposite direction.

    Abstract translation: 提供了一种方法和装置,用于将水蒸气或其它第一气体与其混合物与第二气体吸附,以将混合物中的水蒸汽或第一气体浓度降低到允许的最大浓度以下,其中前沿的前进 通过感测吸附床前方的温度前沿的前进来检测吸附剂床中的吸附前沿,并且通过感测吸附剂床的温度足以远离床的端部来检测该提前,以防止温度前沿 离开床,使用温度采样探头,当温度达到这一点时,吸附前端仍然离开一段距离,因为它遵循温度前沿,吸收循环停止,床再生; 再生循环可以类似地独立地控制,当再生完成时,通过在相反方向上的温度前沿的前进来检测到终止。

    Sensing and indicator system for detecting heating element failures
    4.
    发明授权
    Sensing and indicator system for detecting heating element failures 失效
    用于检测加热元件故障的感应和指示器系统

    公开(公告)号:US4496940A

    公开(公告)日:1985-01-29

    申请号:US339686

    申请日:1982-01-15

    CPC classification number: G08B21/185 Y10S55/34

    Abstract: A sensing and indicator system for monitoring multiple electric heating elements connected in three-phase balanced Y circuits in heat reactivatable adsorbent gas fractionators. The system senses a failure induced imbalance, pinpoints the location of the group with the failure and causes a failure indicating alarm to function. The system operates by a sensing circuit including a discharge bulb sensing the failure induced imbalance and causing a conduction of current through the system resulting in the activation of an alarm and the illumination of the gas discharge bulb indicating which of multiple sets of heating elements has failed.

    Abstract translation: 一种感测和指示器系统,用于监测在热可再生吸附式气体分馏器中连接在三相平衡Y回路中的多个电加热元件。 系统检测到故障引起的不平衡,确定组的位置与故障,并导致故障指示报警功能。 该系统由感测电路操作,该感测电路包括感测故障引起的不平衡的放电灯泡,并引起电流通过系统的电流,导致警报的激活和气体放电灯的照明,指示多组发热元件中的哪一组发生故障 。

    Adsorbent fractionators with electronic sequence timer cycle control and
process
    5.
    发明授权
    Adsorbent fractionators with electronic sequence timer cycle control and process 失效
    具有电子顺序定时器循环控制和过程的吸附分馏器

    公开(公告)号:US4322223A

    公开(公告)日:1982-03-30

    申请号:US25510

    申请日:1979-03-30

    CPC classification number: G05B19/07 B01D53/0454 B01D53/261 B01D2259/402

    Abstract: A method and apparatus are provided for adsorbing one or more first gases from a mixture thereof with a second gas to reduce the concentration of first gas in the mixture to below a permissible maximum concentration by passing the mixture in contact with and from one end to another end of one of two beds of a sorbent having a preferential affinity for the first gas, adsorbing first gas thereon to form a gaseous effluent having a concentration thereof below the maximum, while passing a purge flow of gaseous effluent through the other of the two beds of sorbent to desorb first gas adsorbed thereon, regenerating the other bed for another cycle of adsorption; periodically interchanging the beds so that, alternately, one bed is on regeneration and the other on the adsorption portions of the cycle; timing the cycling in fixed timing intervals determined electronically by a combination of digital integrated circuitry including controlling cycling time at a period not shorter than the regeneration time; and switching the sorbent beds at the end of such cycling time. The system is particularly applicable to the drying of gases.

    Abstract translation: 提供了一种方法和装置,用于将来自其混合物的一种或多种第一气体与第二气体吸附,以通过使混合物从一端接触并从一端到另一端将混合物中的第一气体的浓度降低到允许的最大浓度以下 吸附第一气体具有优先亲和力的两个吸附剂床之一的端部,在其上吸附第一气体以形成其浓度低于最大值的气态流出物,同时通过气态流出物的吹扫流通过两个床中的另一个床 的吸附剂解吸吸附在其上的第一气体,再生另一个床以进行另一个吸附循环; 定期地交换床,使得一个床在循环的吸附部分上交替地再生,而另一个床。 以固定时间间隔定时循环,其通过数字集成电路的组合电子确定,包括在不短于再生时间的时间段内控制循环时间; 并在这种循环时间结束时切换吸附剂床。 该系统特别适用于气体的干燥。

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