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technical article
Brief introduction of V cone flow sensor
2011-8-25 9:06:10

  是由 V 锥流量传感器与差压变送器组合 而成的 它是 目前最先进的差压式流量计之一,可 精确测量宽雷诺数范围8 × 103 5 × 107 各种介质的流量。 The V- cone flowmeter is a combination of a V- cone flow sensor and a differential pressure transmitter . It is one of the most advanced differential pressure flowmeters at present . It can accurately measure a wide Reynolds number range from 8 × 103 to 5 × 107. The flow of various media within. 耐高温 的特点 没有 运动部件 V 锥流量计 与孔板等普通节流元件相比,具有 以下几 优点 长期精度高 稳定性好 受安装条件影响小 耐磨损 测量范围宽 压损小 The V- cone flow sensor has the characteristics of high temperature resistance and no moving parts . Compared with ordinary throttling components such as orifice plates , the V- cone flow meter has the following advantages : ①High long-term accuracy ②Good stability ③Slightly affected by installation conditions Wear Wide measurement range Small pressure loss . 各行业的液体、气体和蒸汽流量的测量 V 锥流量传感器 非常实用 ,特别 是一些 脏污介质的测量。 V- cone flow sensors are very useful in the measurement of liquid, gas and vapor flow in various industries , especially for the measurement of some dirty media.
   传统差压仪表的特性 只是出于 理想的流动状态 情况下,然 而在真实应用中根本不 可能 存在。 Generally , the characteristics of traditional differential pressure instruments are only in the ideal flow condition , but it is impossible to exist in real applications . 任何布置上的变化, 如弯头 阀门 缩径 扩径 三通接头等 安装的不同 都会破坏充分发展流。 Any changes in the layout of the pipeline , such as the installation of elbows , valves , reducing diameters , expanding diameters , pumps , tee joints, etc. will destroy the full development flow. 一般 流量仪表 扰动流动中 很难 取得正确 测量值, 但是 V 型锥流量计 克服了这些缺点。 Therefore , it is difficult for general flow meters to obtain correct measurement values in disturbed flows , but V -shaped cone flowmeters overcome these shortcomings. 果管道的 上游有两个不在同一平面上的弯头, 并且 很靠近锥体, V 型锥体也 使速度分布变得平坦 并且 对称,从而确保了测量精度 ,这是一般传统差压仪表不能实现的。 Under extremely harsh installation conditions, if the upstream of the pipe has two elbows that are not on the same plane and are very close to the cone, the V -shaped cone will also make the speed distribution flat and symmetrical, thereby ensuring measurement accuracy. This is not possible with conventional differential pressure instruments. V 锥流量传感器的节流缘是钝角,流动时形成边界层,使流体离开了节流缘 ,所以 边界层效应使肮脏流体不能磨损节流缘, 因此它的测量 值长期不变。 Because the throttle edge of the V- cone flow sensor is an obtuse angle, a boundary layer is formed during the flow, and the fluid leaves the throttle edge . Therefore, the boundary layer effect prevents the dirty fluid from wearing the throttle edge, so its measured value does not change for a long time. No recalibration required, long-term stability.
   显著改善了传统差压流量计的使用局限, 大大 提高了 测量的 精确度和重复性,安装时几乎 没有 直管段要求,是一种接近理想状态的节流装置 ,具有 自清洗功能,适用 容易结垢的脏污介质,气液两项测量 The V- cone flowmeter significantly improves the limitations of traditional differential pressure flowmeters, greatly improves the accuracy and repeatability of the measurement, and has almost no straight pipe requirements during installation . It is a near-ideal throttling device with a self-cleaning function , It is suitable for measurement of dirty media and gas-liquid which are prone to fouling .