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    • 71. 发明申请
    • DROP WEIGHT TOWER FOR CRACK INITIATION IN FRACTURE MECHANICS SAMPLES
    • 用于破碎机械样品中的裂纹起重的重量塔
    • WO2017011332A1
    • 2017-01-19
    • PCT/US2016/041596
    • 2016-07-08
    • SABIC GLOBAL TECHNOLOGIES B.V.BAJAJ, DevendraKAY, David
    • BAJAJ, DevendraKAY, David
    • G01N3/303
    • G01N3/303G01N2203/0033G01N2203/006G01N2203/0064
    • Drop-weight tower (110) for reproducibly initiating a crack in a material sample for fracture mechanics testing comprising a base (120) with a top surface upon which a sample holder (124) is mounted to grip a material sample, an attachment column (140) having a linear rail (142), a carriage (162) attached to the linear rail (142) and a stage (164) is attached to the carriage. The stage (164) includes a vertical rod (184) and a razor-blade holder (178). A weight is slidably mounted to the vertical rod (184). The carriage is used to adjust the height of the stage (164) relative to the material sample. A hammer (180) slides up and down the vertical rod (184) to apply consistent and reproducible force on the razor (178) that then initiates the crack in the material sample.
    • 用于在用于断裂力学测试的材料样品中可重复地起始裂纹的落锤塔(110),包括具有顶部表面的基部(120),其上安装有样品保持器(124)以夹持材料样品,附着柱 具有线性导轨(142),附接到线性导轨(142)的滑架(162)和平台(164)附接到滑架。 台架(164)包括一个垂直杆(184)和一个剃刀刀架(178)。 重物可滑动地安装在垂直杆(184)上。 滑架用于调整台架(164)相对于材料样品的高度。 锤(180)向上和向下滑动垂直杆(184),以在剃刀(178)上施加一致和可重复的力,然后启动材料样品中的裂纹。
    • 73. 发明申请
    • GATE VALVE
    • 闸阀
    • WO2012048024A1
    • 2012-04-12
    • PCT/US2011/054958
    • 2011-10-05
    • NATIONAL OILWELL VARCO, L.P.DHAWAN, SamirWHALEY, Jason NealKAY, DavidKENNEDY, Neil ColinWEAVER, Randall Ferrain
    • DHAWAN, SamirWHALEY, Jason NealKAY, DavidKENNEDY, Neil ColinWEAVER, Randall Ferrain
    • F16K3/02F16K3/20
    • F16K3/0236F16K3/0209F16K3/20
    • A gate valve comprises a valve body having an internal working fluid passage with a longitudinal axis and an internal gate chamber extending transverse to the working fluid passage. In addition, the gate valve comprises a gate disposed in the internal gate chamber and movable within the gate chamber between a closed position obstructing fluid flow through the working fluid passage and an open position allowing fluid flow through the working fluid passage. Further, the gate valve comprises an internal sealing arrangement coaxially disposed in the working fluid passage and extending between the valve body and the gate to form a barrier between the internal working fluid passage and internal gate chamber. Still further, the gate valve comprises an internal venting passage extending from the internal gate chamber to the internal working fluid passage for selective venting of fluid pressure from the internal gate chamber to the internal working fluid passage.
    • 闸阀包括具有纵向轴线的内部工作流体通道和横向于工作流体通道延伸的内部门室的阀体。 此外,闸阀包括设置在内部门室中的门,并且可在门室内在阻塞流过工作流体通道的流体的关闭位置和允许流体流过工作流体通道的打开位置之间移动。 此外,闸阀包括同轴地设置在工作流体通道中并且在阀体和门之间延伸的内部密封装置,以在内部工作流体通道和内部门室之间形成屏障。 此外,闸阀包括从内部门室延伸到内部工作流体通道的内部通气通道,用于将流体压力从内部门室选择性地排放到内部工作流体通道。