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1.发明授权Method and apparatus for improving the uniformity of a liquid curtain in a curtain coating system-curtain formation/correction 失效用于提高帘式涂布系统帘幕形成/校正中的液帘的均匀性的方法和装置公开(公告)号：US06346299B1
公开(公告)日：2002-02-12
申请号：US09660141
申请日：2000-09-13
IPC分类号： B05D118
CPC分类号： B05D1/305 , B05C5/005 , B05C5/008 , Y10S118/04
摘要： A movable trough is taught for establishing a uniform wetting line on the rear face of a curtain coating hopper lip. The trough can be pivoted or moved linearly into a position such that the hopper lip resides in or proximate to the movable trough. The curtain coating apparatus is then started and the coating solution leaving the hopper lip is intercepted by the trough. The coating solution flowing over the lip fills and floods the movable trough. The flooding of the trough forces the coating solution to substantially wet (to a height on the back side of the lip significantly higher than that of natural product flow) the back side of the hopper lip. The movable trough is then retracted from its position immediately beneath the hopper lip and intercepting the coating solution exiting the hopper lip to thereby allow the free-falling curtain to form and begin impingement on the moving support web to be coated. As the curtain forms, the wetting line on the back of the hopper lip naturally retracts toward the tip of the hopper lip thereby forming a uniform wetting line and a uniform curtain.
摘要翻译： 教导可移动槽，以在幕涂料斗唇缘的后表面上建立均匀的润湿线。 槽可以被枢转或线性移动到一个位置，使得漏斗唇位于或靠近可移动槽。 然后开始幕涂装置，离开料斗唇的涂布液被槽拦截。 流过唇缘的涂层溶液填充并淹没可移动槽。 槽的淹水迫使涂料溶液在料斗唇的背面基本上被润湿（在唇的背面上高于天然产物流的高度）。 然后可移动槽从其位于料斗唇缘正下方的位置缩回，并拦截离开料斗唇缘的涂层溶液，从而允许自由落下的窗帘形成并开始冲击待涂覆的移动的支撑幅材上。 当帘子形成时，料斗唇部背面的润湿线自然地朝向料斗唇缘的尖端缩回，从而形成均匀的润湿线和均匀的帘幕。
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公开(公告)号：US5593734A
公开(公告)日：1997-01-14
申请号：US597750
申请日：1996-02-07
CPC分类号： B05C5/007 , B05C9/06 , Y10S118/04
摘要： A liquid flow distribution apparatus for forming highly uniform liquid layers on substrates without stagnation within a flow distribution cavity of the apparatus. A primary cavity has a primary inlet means and a plurality of secondary inlet conduits which terminate in angled secondary ports in the cavity wall. Each of the secondary ports is angled away from the primary inlet means. The apparatus can be used under varying rheological conditions.
摘要翻译： 一种用于在衬底上形成高度均匀的液体层而不滞留在设备的分配腔内的液体流量分配装置。 主空腔具有主入口装置和多个次级入口管道，其终止于空腔壁中的成角度次级端口。 每个次要端口与主入口装置成一定角度。 该设备可以在不同的流变条件下使用。
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公开(公告)号：US5941257A
公开(公告)日：1999-08-24
申请号：US929322
申请日：1997-09-12
CPC分类号： B08B9/0325 , B08B9/032
摘要： A method for hydrodynamic cleaning of a piping system using two-phase flow. A model for predicting peak wall shear stress for two-phase flow is used to determine an optimum flow rate ratio which achieves a maximum wall shear stress in the particular piping system to be cleaned. The optimum flow rate is first established by turning on the liquid and gas flows through the piping system to be cleaned and allowing the flow to reach steady state conditions. The back pressure of the system is measured and the optimization model is used to determine the optimum flow rate ratio. Once the optimum flow rate ratio has been calculated, the liquid flow rate and the gas flow rates can be adjusted such that the optimum ratio is achieved. The two-phase back pressure is then measured to verify that the optimum flow rate ratio has been used. This is done by comparing the measured optimum two-phase flow back pressure with the initial two-phase back pressure used in the equations. If there is a variance between the two back pressures then the measured back pressure is substituted into the equations for the initial back pressure and the optimum flow rate ratio is recalculated. This step is repeated until the measured back pressure is equal to the back pressure used in the calculations. Cleaning is then performed at that optimum flow rate ratio.
摘要翻译： 一种使用两相流动的流体动力学清洗管道系统的方法。 用于预测两相流的峰值壁应力的模型用于确定在要清洁的特定管道系统中实现最大壁剪应力的最佳流量比。 首先通过打开待清洁的管道系统的液体和气体流动并允许流量达到稳定状态来首先建立最佳流量。 测量系统的背压，采用优化模型确定最佳流量比。 一旦计算了最佳流量比，就可以调整液体流量和气体流量，使得达到最佳比例。 然后测量两相背压，以验证已使用最佳流量比。 这通过将测得的最佳两相流回压与方程中使用的初始两相背压进行比较来完成。 如果两个背压之间存在差异，则将测量的背压代入初始背压的等式，并重新计算最佳流速比。 重复该步骤直到所测量的背压等于计算中使用的背压。 然后以最佳流量比进行清洁。
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公开(公告)号：US06537618B2
公开(公告)日：2003-03-25
申请号：US09742172
申请日：2000-12-20
IPC分类号： B05D126
CPC分类号： B05C5/007 , B05C9/06 , B05D1/28 , B05D7/5485 , G03C1/74 , G03C2001/7492
摘要： A method is taught for preparing a coating hopper prior to initiation of coating a liquid coating composition at a predetermined coating flow rate onto a moving substrate wherein the coating hopper includes at least one internal flow path therethrough. The internal flow path(s) of the coating hopper are drained. The liquid coating composition is introduced into internal flow path(s) at a purge flow rate which may be determined empirically. The internal flow path(s) are filled with the liquid coating composition and with the liquid coating composition then discharging from the internal flow path(s) onto a slide surface of the coating hopper, the liquid coating composition flowing down the slide surface and over a lip of the coating hopper at the purge rate to a drain. The flow of the liquid coating composition through the internal flow path(s) is maintained at the purge rate until air within the internal flow path(s) has been displaced from the coating hopper. Preferably, the internal flow path(s) are flushed with water prior to draining.
摘要翻译： 教导了一种在开始以预定的涂布流速将液体涂料组合物涂覆到移动的基材上之前制备涂料料斗的方法，其中涂料料斗包括至少一个通过其的内部流动通道。 排出涂料料斗的内部流路。 将液体涂料组合物以可根据经验确定的清洗流速引入内部流路。 内部流动路径用液体涂料组合物填充，然后液体涂料组合物从内部流动路径排出到涂料料斗的滑动表面上，液体涂料组合物从滑动表面向下流动 涂料料斗的边缘以吹扫速率流到排水管。 通过内部流动路径的液体涂料组合物的流动保持在吹扫速率，直到内部流动路径内的空气已从涂料料斗移出。 优选地，内部流动路径在排水之前用水冲洗。
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5.发明授权Method for measuring wall shear stress due to fluid flow in piping systems 失效用于测量管道系统中流体流动引起的壁剪切应力的方法
公开(公告)号：US5872317A
公开(公告)日：1999-02-16
申请号：US976434
申请日：1997-11-21
CPC分类号： G01N11/02 , G01F1/74 , G01N35/0098
摘要： A method and apparatus for measuring wall shear stress in pipe as a result of fluid flow therethrough employs a glass flow tube, magnetic particles of sufficiently small size such that the form drag force on the individual particles is orders of magnitude smaller than the viscous shear forces on the particle, and a magnet of known magnetic field strength. The glass flow tube with a known coefficient of friction allows visual inspection of particle release and further allows for the determination of the frictional forces on the particles. The magnetic particles are placed inside the tube with the magnet held in close proximity to the exterior wall of the tube. With the particles in place, fluid flow is initiated. The magnetic field strength at the surface of the flow tube is then reduced until the magnetic particles are hydrodynamically dislodged from the interior of the glass tube. Magnetic field strength may be reduced either by retracting the magnet away from the glass tube or by using an electromagnet and reducing current thereto. The position of the magnet, or the current to the electromagnet, at which the particles are dislodged is used to qualitatively determine the wall shear stress.
摘要翻译： 用于测量由于流体流动而导致的管道中的壁剪应力的方法和装置采用玻璃流管，足够小尺寸的磁性颗粒使得单个颗粒上的形状阻力大于小于粘性剪切力的数量级 在颗粒上，以及具有已知磁场强度的磁体。 具有已知摩擦系数的玻璃流管允许目视检查颗粒释放并进一步允许确定颗粒上的摩擦力。 磁性颗粒放置在管内，磁体保持紧靠管的外壁。 随着颗粒到位，流体流动开始。 然后减小流管表面处的磁场强度，直到磁性颗粒从玻璃管的内部流体动力移开。 可以通过将磁体远离玻璃管或通过使用电磁体并减小电流来减小磁场强度。 使用磁体的位置，或者电流到电磁体的位置，颗粒被移动到其上以定性地确定壁剪切应力。
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