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公开(公告)号：US3739258A
公开(公告)日：1973-06-12
申请号：US3739258D
申请日：1971-08-20
Applicant: IIT RES INST
CPC classification number: G01N15/12 , G01N15/1218
Abstract: Improved accuracy of size measurement and size distribution of particles in a fluid have been obtained in an electrical zone sensing apparatus by a flow control director means which directs the fluid in a more streamlined, less turbulent flow through an aperture at which the particles are electrically sensed. Also, the particles were directed and guided to flow substantially parallel to longitudinal axis for the aperture. The preferred flow control detector means comprises a contoured orifice having a smooth tapered inlet wall blended at an intersection with a central cylindrical wall defining a tubular shaped aperture.
Abstract translation: 在电气区域感测装置中已经通过流量控制导向器装置获得了尺寸测量和流体中颗粒尺寸分布的改进的精度，该装置将流体导向更流线，更少的湍流流过通过孔的电极， 。 此外，颗粒被引导和引导以基本上平行于孔的纵向轴线流动。 优选的流量控制检测器装置包括具有平滑锥形入口壁的成形孔口，其在与限定管状孔的中心圆柱形壁的交点处混合。
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公开(公告)号：US3739268A
公开(公告)日：1973-06-12
申请号：US3739268D
申请日：1971-08-20
Applicant: IIT RES INST
CPC classification number: G01N15/12 , G01N15/1218 , G01N2015/0057
Abstract: A flow direction collar is positionable in an electrical zone sensing apparatus with an elongated bore therein disposed in substantial alignment with an aperture through which particles carried by a liquid pass while being electrically sensed. The collar is positioned immediately upstream of the aperture to cause a directional flow of the liquid along a path substantially parallel to a longitudinal axis for the aperture. The flow through the collar directs the particles to flow along paths substantially parallel to the aperture axis thereby reducing the turbulence about the particle created by abrupt changes in velocity. Preferably, the collar includes a housing for telescoping on the bottom of a detection tube.
Abstract translation: 流动方向轴环可定位在电气区域感测装置中，其中具有细长的孔，其中设置成与电气基本上对齐的孔，通过该孔在被电感测的情况下由液体携带的颗粒通过。 轴环定位在孔的紧挨上游处，以引起液体沿着基本上平行于孔的纵向轴线的路径的定向流动。 通过轴环的流动引导颗粒沿着基本上平行于孔径轴线的路径流动，从而减少由于速度的突然变化而产生的颗粒周围的紊流。 优选地，套环包括用于在检测管的底部上伸缩的壳体。
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公开(公告)号：US3845386A
公开(公告)日：1974-10-29
申请号：US37570573
申请日：1973-07-02
Applicant: IIT RES INST
CPC classification number: G01N15/12 , G01N15/1218 , G01N15/1245 , G01N2015/0057
Abstract: A method and apparatus are provided for distinguishing microscopic size, elongated fiber-like particles from cubically shaped, irregularly shaped, or spherically shaped particles in a mixture suspended in an electrically conducting liquid medium and for counting the fiber-like particles. In accordance with the method, an electrical zone sensing apparatus is provided with a screen means having microscopic openings therein of predetermined size to filter from the suspension particles having an effective area larger than the size of screen openings. Particles passing through the screen and through the sensing aperture of the zone sensing apparatus are separately sized by volume characteristics of electrical signals generated. The electrical signals having predetermined volume characteristics associated with the maximum spherical particles for passing through the screen openings are counted as non-fiber particles; whereas signals having larger volume characteristics are separately counted and designated as fibers. By the use of screens of successively smaller sizes, the larger particles including fibers having larger transverse cross sections may be successively filtered from the suspension and from reaching the sensing aperture. Therefore, smaller fibers having smaller cross-sectional area may be distinguished from particles having diameters approximating that of the smaller screen size openings.
Abstract translation: 提供了一种方法和装置，用于将悬浮在导电液体介质中的混合物中的微观尺寸细长纤维状颗粒与立方形不规则形状或球形颗粒区分开来，并计数纤维状颗粒。 根据该方法，电区感测装置设置有具有预定尺寸的微小开口的筛网装置，以从具有大于筛孔尺寸的有效面积的悬浮颗粒过滤。 穿过屏幕并通过区域感测装置的感测孔径的颗粒通过产生的电信号的体积特性分开地大小。 具有与用于通过筛孔的最大球形颗粒相关联的具有预定体积特性的电信号被计为非纤维颗粒; 而具有较大体积特性的信号被分开计数并被指定为纤维。 通过使用连续更小尺寸的筛网，可以从悬浮液中连续过滤包括具有较大横截面的纤维的较大颗粒，并且到达感测孔。 因此，具有较小横截面面积的较小纤维可以与直径接近较小屏幕尺寸开口直径的颗粒区分。
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