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首页> 外文会议>2004 AGA operating section proceedings >THE EFFECTS OF UPSTREAM RECESSES ON THE DISCHARGE COEFFICIENT OF FLANGETAPPED ORIFICE METERS
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THE EFFECTS OF UPSTREAM RECESSES ON THE DISCHARGE COEFFICIENT OF FLANGETAPPED ORIFICE METERS

机译：上游贮藏对果皮施用果皮的出水系数的影响

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The effects of upstream recesses on the discharge coefficient of flange tapped Senior? orifice fittingsrnwere investigated experimentally. The study was conducted in a 100 mm (4 inch) line and a 200mm (8inch)rnline using water as the working fluid. Calibrations were performed against a bi-directional volumetric ballrnprover. In the 100mm (4inch) line, the recess location was 200 mm (8 inches) upstream of the upstream facernof the orifice plate and the depth and width of the recess was 9.2 mm (0.362 inches) and 4.77 mm (0.188rninches), respectively, that correspond in size and location to the recess formed by the union of a Ring TypernJoint (RTJ) flanged Senior? orifice fitting with the upstream meter tube. Three plates with β ratios of 0.2, 0.4rnand 0.67 were calibrated. In the 200 mm (8 inch) line the recess location was 232 mm (9.125 inches)rnupstream of the upstream face of the orifice plate, the depth of the recess was 18.5 mm (0.73 inches) and thernrecess widths were 4.37 mm (0.172 inches) and 6.17mm (0.243 inches) which correspond in size and locationrnto the recess formed by the union of a RTJ flanged Senior? orifice fitting and the upstream meter tube.rnWithin the precision of the calibration system, the test result indicated that the effect of the recess on the flowrnrate measurement was negligible for both the meter sizes and all the different beta ratio plates used in thisrnexperimental investigation.
机译：上游凹口对法兰螺纹丝锥的排放系数的影响？实验研究了孔口配件。这项研究是在100毫米（4英寸）管线和200毫米（8英寸）管线中进行的，用水为工作液。针对双向体积球调球器进行校准。在100毫米（4英寸）管线中，凹槽位置位于孔板上游面200毫米（8英寸）上游，凹槽的深度和宽度分别为9.2毫米（0.362英寸）和4.77毫米（0.188英寸）。 ，其大小和位置是否与由Ring TypernJoint（RTJ）带凸缘的高级套环的结合所形成的凹口相对应？节流孔与上游仪表管配合。校准了三块β值为0.2、0.4rn和0.67的板。在200毫米（8英寸）的直线上，凹槽位置在孔板上游面上游232毫米（9.125英寸），凹槽深度为18.5毫米（0.73英寸），凹槽宽度为4.37毫米（0.172英寸）。 ）和6.17毫米（0.243英寸），它们的尺寸和位置对应于RTJ带凸缘的高级管接头的凹口？在校准系统的精度范围内，测试结果表明，凹口对流量测量的影响对于仪表尺寸以及用于本实验研究的所有不同的β比率板均可以忽略不计。

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