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7 条记录 (耗时 0.04 秒)

    Actively driven thermal radiation shield
    1.
    发明授权
    Actively driven thermal radiation shield 失效
    积极驱动的热辐射屏蔽

    公开(公告)号：US06396061B1

    公开(公告)日：2002-05-28

    申请号：US09406913

    申请日：1999-09-24

    申请人： Norman W. Madden ,  Christopher P. Cork ,  John A. Becker ,  David A. Knapp

    发明人： Norman W. Madden ,  Christopher P. Cork ,  John A. Becker ,  David A. Knapp

    IPC分类号： G12B1500

    CPC分类号： G01J5/061

    摘要： A thermal radiation shield for cooled portable gamma-ray spectrometers. The thermal radiation shield is located intermediate the vacuum enclosure and detector enclosure, is actively driven, and is useful in reducing the heat load to mechanical cooler and additionally extends the lifetime of the mechanical cooler. The thermal shield is electrically-powered and is particularly useful for portable solid-state gamma-ray detectors or spectrometers that dramatically reduces the cooling power requirements. For example, the operating shield at 260K (40K below room temperature) will decrease the thermal radiation load to the detector by 50%, which makes possible portable battery operation for a mechanically cooled Ge spectrometer.

    摘要翻译： 用于冷却便携式γ射线光谱仪的热辐射屏蔽。 热辐射屏蔽位于真空外壳和检测器外壳的中间，被主动驱动，并且可用于减少机械冷却器的热负荷，并且还可延长机械冷却器的使用寿命。 热屏蔽是电动的，对于便携式固态γ射线检测器或光谱仪特别有用，可显着降低冷却功率要求。 例如，260K（40K低于室温）的操作屏蔽将使检测器的热辐射负载降低50％，这使得机械冷却Ge光谱仪的便携式电池运行成为可能。

    Handheld isotope identification system
    2.
    发明授权
    Handheld isotope identification system 有权
    手持式同位素识别系统

    公开(公告)号：US07161150B2

    公开(公告)日：2007-01-09

    申请号：US11052176

    申请日：2005-02-07

    申请人： Christen M. Frankle ,  John A. Becker ,  Christopher P. Cork ,  Norman W. Madden

    发明人： Christen M. Frankle ,  John A. Becker ,  Christopher P. Cork ,  Norman W. Madden

    IPC分类号： G01J5/02

    CPC分类号： G01T1/244 ,  G01T1/169

    摘要： A portable radiation detector using a high-purity germanium crystal as the sensing device. The crystal is fabricated such that it exhibits a length to width ratio greater than 1:1 and is oriented within the detector to receive radiation along the width of said crystal. The crystal is located within a container pressurized with ultra-pure nitrogen, and the container is located within a cryostat under vacuum.

    摘要翻译： 使用高纯度锗晶体的便携式辐射探测器作为感测装置。 晶体被制造成使得其长宽比大于1:1，并且在检测器内定向以沿着所述晶体的宽度接收辐射。 晶体位于用超纯氮加压的容器内，容器在真空下位于低温恒温器内。

    Hydraulically operated downhole oil well pump
    5.
    发明授权
    Hydraulically operated downhole oil well pump 失效
    液压井下油井泵

    公开(公告)号：US4386654A

    公开(公告)日：1983-06-07

    申请号：US262747

    申请日：1981-05-11

    申请人： John A. Becker

    发明人： John A. Becker

    IPC分类号： E21B43/12 ,  F04C11/00

    CPC分类号： F04C11/003 ,  E21B43/129

    摘要： A hydraulically operated downhole pump that is connected to or disposed in a string of tubing, and when operated by pressurized oil from the ground surface, is capable of discharging production fluid, gas, and pressurized oil from the well either separately or in desired combinations thereof. The pump includes an elongate housing preferably of such transverse cross section as to be longitudinally movable through a tubing string, with the pump including universal joint connected upper and lower helical screws that rotate in slidable sealing contact with upper and lower double threaded resilient stator blocks secured to the interior of the housing. As pressurized oil is discharged into the upper end of the housing the upper helical screw and associated stator act as a motor to drive the lower helical screw relative to the lower stator block. As the lower helical screw rotates relative to the lower stator block, the lower helical screw acts as a pump to discharge production fluid from the well upwardly therein either separately or in combination with the pressurized oil depending on the components associated with the pump.

    摘要翻译： 连接到或设置在一串管道中的液压操作的井下泵，以及当从地表压力油操作时，能够单独地或以期望的组合从井中排出生产流体，气体和加压油 。 该泵包括一个细长的外壳，优选地具有这样的横向横截面，以便可以纵向移动通过管柱，泵包括万向接头，连接的上和下螺旋螺钉，其可旋转地与上和下双螺纹弹性定子块滑动地密封接触， 到房屋的内部。 当加压油被排放到壳体的上端时，上螺旋螺钉和相关联的定子用作电动机，以相对于下定子块驱动下螺旋螺杆。 当下螺旋螺旋相对于下定子块旋转时，下螺旋螺旋作为泵，以根据与泵相关联的部件单独地或与加压油组合从井向上排出生产流体。