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7 条记录 (耗时 0.012 秒)

    Cavitating venturi for low reynolds number flows
    3.
    发明授权
    Cavitating venturi for low reynolds number flows 失效
    气蚀文丘里管低雷诺数流

    公开(公告)号：US5647201A

    公开(公告)日：1997-07-15

    申请号：US510223

    申请日：1995-08-02

    申请人： Dale L. Hook ,  Hermann W. Behrens ,  Kiran R. Magiawala

    发明人： Dale L. Hook ,  Hermann W. Behrens ,  Kiran R. Magiawala

    IPC分类号： F02K9/44 ,  F02K9/60 ,  F15D1/06 ,  F15D1/08 ,  F02K9/52

    CPC分类号： F15D1/08

    摘要： Disclosed is a low flow, low Reynolds number cavitating venturi. This cavitating venturi includes an inlet for receiving a liquid at an upstream pressure and an outlet for discharging the liquid received by the inlet at a downstream pressure. The liquid passes through a converging portion having a converging sidewall which extends from said inlet, through a throat portion having a throat sidewall and a diverging diffuser portion having a diverging sidewall. The cavitating venturi provides a substantially stable liquid flow rate independent of the downstream pressure up to a downstream pressure at least as high as 80% of the upstream pressure at a Reynolds number of 60,000 or less.

    摘要翻译： 公开了低流量，低雷诺数气蚀文丘里管。 该气蚀文丘里管包括用于接收上游压力的液体的入口和用于在下游压力下排出由入口接收的液体的出口。 液体通过具有会聚侧壁的会聚部分，该会聚侧壁从所述入口延伸穿过具有喉部侧壁的喉部和具有发散侧壁的发散扩散部。 气蚀文丘里管提供基本上稳定的液体流速，独立于下游压力，直到下游压力至少高达雷诺数为60,000或更小的上游压力的80％。

    Steering control valve with different size flow gaps for noise suppression
    4.
    发明授权
    Steering control valve with different size flow gaps for noise suppression 失效
    具有不同尺寸流量间隙的转向控制阀，用于噪声抑制

    公开(公告)号：US5562124A

    公开(公告)日：1996-10-08

    申请号：US391236

    申请日：1995-02-21

    申请人： Hermann W. Behrens ,  George M. Harpole ,  Jane M.-C. Lin ,  Michael F. Wolff ,  Wendell L. Gilbert

    发明人： Hermann W. Behrens ,  George M. Harpole ,  Jane M.-C. Lin ,  Michael F. Wolff ,  Wendell L. Gilbert

    IPC分类号： B62D5/083 ,  F15B13/04 ,  F15B9/10

    CPC分类号： B62D5/0837 ,  Y10T137/86654 ,  Y10T137/86662

    摘要： A valve (10) for controlling flow of hydraulic fluid. The valve (10) has first and second valve members (80, 82) which have a plurality of lands and grooves. The valve members (80, 82) are relatively movable from a neutral position to a displaced position in which surface segments (202, 226, 208, 218) of respective pairs of lands overlap to form flow gaps (232, 234) for restricting flow of fluid between respective pairs of grooves. At least one (234) of the flow gaps is divergent by having a cross-sectional flow area which increases along a direction of fluid flow and at least one (232) of the flow gaps is convergent by having a cross-sectional flow area which decreases along a direction of fluid flow. The flow gaps (232, 234) have minimum cross-sectional flow areas (A, B) defined by the surface segments. The flow gaps (232, 234) are sized such that the minimum cross-sectional flow area (A) of the convergent flow gap (232) is larger than the minimum cross-sectional flow area (B) of the divergent flow gap (234) for suppressing valve noise.

    摘要翻译： 一种用于控制液压流体流动的阀门（10）。 阀（10）具有第一和第二阀构件（80,82），其具有多个平台和凹槽。 阀构件（80,82）可从中性位置相对移动到其中相应对的脊的表面段（202,226,208,218）重叠以形成用于限制流动的流动间隙（232,234）的位移位置 的各对槽之间的流体。 至少一个（234）的流动间隙通过具有沿流体流动方向增加的横截面流动面积而发散，并且至少一个（232）的流动间隙通过具有横截面流动面积而会聚， 沿着流体流动的方向减小。 流动间隙（232,234）具有由表面段限定的最小横截面流动面积（A，B）。 流动间隙（232,234）的尺寸使得会聚流动间隙（232）的最小横截面流动面积（A）大于发散流动间隙（234）的最小横截面积面积（B） ）用于抑制阀门噪音。

    Supersonic gas flow device incorporating a compact supersonic diffuser
    5.
    发明授权
    Supersonic gas flow device incorporating a compact supersonic diffuser 失效
    超音速气流装置结合了紧凑型超音速扩散器

    公开(公告)号：US06302142B1

    公开(公告)日：2001-10-16

    申请号：US09585209

    申请日：2000-06-01

    申请人： Hermann W. Behrens

    发明人： Hermann W. Behrens

    IPC分类号： F16K4900

    CPC分类号： F15D1/02 ,  Y10T137/6525

    摘要： A gas flow device including a compact supersonic diffuser for converting high-velocity low-pressure gaseous flow to low-velocity high-pressure gaseous flow. The compact supersonic diffuser includes a plurality of wedges disposed in the diffuser duct that, by selectively initiating a series of interacting shocks on the gaseous flow, convert the flow to lower velocities and higher pressures in a shorter path.

    摘要翻译： 一种气流装置，包括用于将高速低压气流转换成低速高压气流的紧凑型超音速扩散器。 紧凑型超音速扩散器包括设置在扩散器管道中的多个楔形物，通过选择性地启动气流上的一系列相互作用的冲击，将流量在较短的路径中转换成较低的速度和较高的压力。

    Low turbulence wind tunnel stilling chamber
    7.
    发明授权
    Low turbulence wind tunnel stilling chamber 失效
    低湍流风洞静止室

    公开(公告)号：US4281540A

    公开(公告)日：1981-08-04

    申请号：US844689

    申请日：1977-10-25

    申请人： Roland E. Lee ,  Alfred G. Berger ,  Dennis A. Sowers ,  Richard J. Sergeant ,  Hermann W. Behrens

    发明人： Roland E. Lee ,  Alfred G. Berger ,  Dennis A. Sowers ,  Richard J. Sergeant ,  Hermann W. Behrens

    IPC分类号： G01M9/04 ,  G01M9/00

    CPC分类号： G01M9/04

    摘要： A wind tunnel in which high energy laser beam impingement studies can be ducted such that beam distortion and degradation is substantially precluded. Uniform, low turbulence flow in which thermal blooming, creation of wakes is substantially eliminated is attained by providing an improved elongated cylindrical settling chamber having a gradual turning radius. A transverse aerodynamic window is located in the low velocity flow turning region of the settling chamber which allows the entry of the laser beam and the exhaust of a turbulent sonic free-jet constituting 10 percent of the total fluid flow through the wind tunnel.

    摘要翻译： 可以进行高能激光束冲击研究的风洞，从而基本上不排除光束畸变和退化。 通过提供具有逐渐转动半径的改进的细长圆柱形沉降室，可实现均匀，低湍流，其中热喷涂，产生醒来基本消除。 横向气动窗口位于沉降室的低速流动转向区域中，其允许激光束的进入和构成总流体流量的10％的湍流声波自由射流的排气穿过风洞。