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浮子/转子流量计
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金属浮子流量计
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金属浮子流量计
金属浮子流量计
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<p style="margin-top:7px;margin-left:77px"><span style=";font-family:黑体;color:rgb(0,0,0);letter-spacing:-1px;font-size:21px">一</span><span style=";font-family:黑体;color:rgb(0,0,0);letter-spacing:-1px;font-size:21px"> <span style="font-family:黑体">概述</span></span></p><p style="margin-top:11px;margin-right:76px;margin-left:76px;text-indent:29px;line-height:137%"><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">金属管</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">浮</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px"><span style="font-family:宋体">子流量计</span> (金属管转子流量计) 是工业自动化过程控制中常用的一种变面积流量测量仪表。</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">它</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">具</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">有体积小,检测范围大,使用方便等特点,它可用来测量液体、气体以及蒸汽的流量,特别适宜低流</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">速</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:0;font-size:13px">小流量的测量。</span></p><p style="margin-right:76px;margin-left:76px;text-indent:29px;line-height:138%"><span style=";font-family:宋体;line-height:138%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">多年来,</span><span style=";font-family:宋体;line-height:138%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">金</span><span style=";font-family:宋体;line-height:138%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">属管浮子流量计以其优良性能和可靠性,以及较好的性能价格比,在石化、钢铁、电力、</span><span style=";font-family:宋体;line-height:138%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:138%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">冶</span><span style=";font-family:宋体;line-height:138%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">金、轻工、食品、制药、水处理等行业得到了广泛的应用。</span></p><p style="margin-top:0;margin-left:104px"><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">本手册面向</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">专</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:0;font-size:13px">业技术人员,适用于金属管浮子流量计的设计选型,也可用于最终用户在使用时的参考。</span></p><p style="margin-top:7px;margin-right:76px;margin-left:76px;text-indent:29px;line-height:137%"><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">手册分别介绍了金属管浮子流量计的工作原理、功能特点、技术参数、仪表类型及外形、流量计算</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:0;font-size:13px">、</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">接</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">线方法和安装、维护等。</span></p><p style="margin-top:0;margin-left:104px"><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">本</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">手</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">册只针对金属管浮子流量计的设计选型和使用,同时厂家保留某些技术参数改进而不预先通知的</span></p><p style="line-height:5px"><span style=";font-family:Arial;color:rgb(0,0,0);font-size:14px"> </span></p><p><span style=";font-family:Arial;color:rgb(0,0,0);font-size:14px"><br clear="all" style="page-break-before:always"/></span> </p><p style="margin-top:3px;margin-left:76px"><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:0;font-size:13px">权</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:0;font-size:13px">利。</span></p><p style="margin-top:13px;margin-left:77px"><span style=";font-family:黑体;color:rgb(0,0,0);letter-spacing:-0;font-size:21px"><span style="font-family:黑体">二</span> <span style="font-family:黑体">测量原理</span></span></p><p style="margin-top:11px;margin-right:11px;margin-left:76px;text-indent:29px;line-height:137%"><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">金</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">属</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">管浮子流量计主要由两大部分组成:传感器和指示器。传</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">感器</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">主要由连接法兰、测量锥管、浮子和上下导向器组成;指示器</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">主</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">要由壳体、磁传动系统、刻度盘和电远传系统组成。</span></p><p style="margin-top:1px;margin-left:76px;text-indent:28px;line-height:131%"><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">在</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">垂</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">直的锥形测量管内,有一可上下移动的测量部件</span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">—</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">浮子</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);font-size:13px"> </span> <span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">(图</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px"> </span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px">1</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px">) ,当流体自下而上通过锥形管时,浮子受到流体的作用力,</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">沿锥</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">形管向上移动。当流体的流量增大时,浮子的位移量增大;反</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">之,</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">流体的流量减少时,浮子的位移量变小。也就是说,流体流量</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">的大</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">小,决定了浮子在测量管中的位置,从而决定了浮子和锥形管</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">之</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px"><span style="font-family:宋体">间环形面积的大小。当流体的流量保持在一个恒定的流量</span> </span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);font-size:13px">Q</span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">时,</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">浮</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px">子也处于一动平衡状态,停留在锥形管中的一位置</span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);font-size:13px">h</span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px">,此时,浮子</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">和锥</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">形</span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px"><span style="font-family:宋体">管之间的</span> <span style="font-family:宋体">环形面积保持恒定。浮子受到三个力的作用:浮子</span></span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px"><span style="font-family:宋体">的重力</span> </span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);font-size:13px">G</span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px"><span style="font-family:宋体">,浮子受到的浮力</span> </span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);font-size:13px">F</span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px"> </span><span style=";font-family:宋体;line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px"><span style="font-family:宋体">,浮子受到流体的作用力</span> </span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);font-size:13px">P</span><span style=";font-family:'Times New Roman';line-height:131%;color:rgb(0,0,0);letter-spacing:0;font-size:13px"> </span><img src="https://proe47ff66a-pic12.ysjianzhan.cn/upload/1664173083265.jpg" width="216" height="318"/><span style="color: rgb(0, 0, 0); font-family: 宋体; font-size: 13px; letter-spacing: 0px;">,这三个力</span></p><p><span style="color: rgb(0, 0, 0); font-family: Arial; font-size: 14px;"> </span></p><p style="margin-top:5px;margin-left:101px"><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:-1px;font-size:13px">图</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:-1px;font-size:13px"> </span><span style=";font-family:'Times New Roman';color:rgb(0,0,0);letter-spacing:-1px;font-size:13px">1</span></p><p><span style=";font-family:Arial;color:rgb(0,0,0);font-size:14px"><br clear="all" style="page-break-before:always"/></span> </p><p style="margin-top:10px;margin-right:76px;margin-left:77px;line-height:137%"><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">达</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">到</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">平衡。根据流体动力学的柏努力方程、力平衡原理和流体连续性定律,可以计算出此时通过环形面积</span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;line-height:137%;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">的</span><span style="font-family: 宋体; line-height: 137%; color: rgb(0, 0, 0); letter-spacing: 1px; font-size: 13px;">瞬时流体流量,所以,金属管浮子流量计是采用可变面积测量流量的原理</span><span style="font-family: 宋体; line-height: 137%; color: rgb(0, 0, 0); letter-spacing: 0px; font-size: 13px;">。</span></p><p><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">在</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">浮子的内部,镶嵌一高性能永久磁体,当浮子处于平衡位置时,在浮子周围形成一均匀而稳定的磁</span><span style=";font-family:宋体;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">场</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">。</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">在锥形管的外面,安装一磁传感器,这样,就能将测量管内浮子的直线位移通过非接触形式传递到指</span><span style=";font-family:宋体;color:rgb(0,0,0);font-size:13px"> </span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">示</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">器</span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px"><span style="font-family:宋体">中,通过检测和处理后,</span> <span style="font-family:宋体">最终显示在指示器刻度盘上或输出相应的标准</span> </span><span style=";font-family:'Times New Roman';color:rgb(0,0,0);letter-spacing:1px;font-size:13px">4 </span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">~ </span><span style=";font-family:'Times New Roman';color:rgb(0,0,0);letter-spacing:1px;font-size:13px">20</span><span style=";font-family:'Times New Roman';color:rgb(0,0,0);font-size:13px">mA</span><span style=";font-family:'Times New Roman';color:rgb(0,0,0);letter-spacing:1px;font-size:13px"> </span><span style=";font-family:宋体;color:rgb(0,0,0);letter-spacing:1px;font-size:13px">电流信号。</span></p><p><br/></p>
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液体类流量仪表
超声波流量仪表
电磁流量仪表
液体涡轮流量仪表
科里奥力质量流量仪表
明渠流量计
气体类流量仪表
涡街流量计
气体涡轮流量计
热式气体质量流量计
旋进旋涡流量计
罗茨/腰轮流量计
容积式流量计
椭圆型齿轮流量计
圆型齿轮流量计
浮子/转子流量计
金属浮子流量计
玻璃浮子流量计
塑料浮子流量计
差压类流量仪表
孔板流量计
巴类流量计
V锥流量计
喷嘴流量计
楔形流量计
弯管流量计
物位/液位测量仪表
超声波液位/物位计
雷达液位/物位计
磁翻板液位计
静压式液位计
温度、压力测量仪表
温度变送器
压力/差压变送器
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大连祥泽自动化仪器仪表有限公司
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