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卡箍连接式渦街流量計

卡箍连接式渦街流量計克服了一般流量计接头需要在连接盘上匀布螺栓孔，使用螺栓、螺母将连接盘固定在管道上，造成使用成本高、操作麻烦、效率低的弊端，而改采用横切面为直角梯形的连接盘，内侧为直角梯形斜边，使用时，利用卡箍将连接盘紧固在管道上，使用成本低，省时省力。卡箍式流量计主要应用于油田等高复杂度的工作场合。

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産品簡介 / Introduction

産品優點 / Product advantages

卡箍连接式渦街流量計采用横切面为直角梯形的连接盘，直角梯形斜边为横切面相对内侧，使用时，用卡箍将连接盘紧固在管道上，省时省力。另外，在连接盘与管道相连接的连界面上设有填料函，密封性能好，密封强度高，使用方便。

技術參數 / Technical parameters

性能	技術參數
測量介質	氣體、液體、蒸氣
口徑規格	DN25-300
流量測量範圍	正常測童流速範圍氣體5?50m/s;液體0. 5?7m/s
測量精度	1.0級1.5級
被測介質溫度	常溫-25℃?10℃ 高溫-25℃?150 ℃ -25℃?250℃
材質	不鏽鋼 304不鏽鋼
電源	DC24V或锂電池3.6V
防爆等級	本安型 iaIIbT3-T6
防護等級	IP65

産品如何選型 / How to select productss

正确选型才能保证卡箍连接式渦街流量計更好的使用。选用什么种类的渦街流量計应根据被测流体介质的物理性质和化学性质来决定?使渦街流量計的通径、流量范围、衬里材料、电极材料和输出电流等?都能适应被测流体的性质和流量测量的要求。

01.精密功能檢查

精度等级和功能根据测量要求和使用场合选择仪表精度等级，做到经济合算。比如用于贸易结算、产品交接和能源计量的场合，应该选择精度等级高些，如1.0级、0.5级，或者更高等级; 用于过程控制的场合，根据控制要求选择不同精度等级;有些仅仅是检测一下过程流量，无需做控制和计量的场合，可以选择精度等级稍低的，如1.5级、2.5级，甚至 4.0级，这时可以选用价格低廉的插入式渦街流量計。

02.可測量的介質

測量介質流速、仪表量程与口径测量一般的介质时，渦街流量計的满度流量可以在測量介質流速0.5—12m/s范围内选用，范围比较宽。选择仪表规格(口径)不一定与工艺管道相同，应视测量流量范围是否在流速范围内确定，即当管道流速偏低，不能满足流量儀表要求时或者在此流速下测量准确度不能保证时，需要缩小仪表口径，从而提高管内流速，得到满意测量结果。

03.渦街流量變送器的選擇

在饱和蒸汽测量中采用VA型压电式涡街流量变送器，由于渦街流量計量程范围宽，因此，在实际应用中，一般主要考虑测量饱和蒸汽的流量不得低于渦街流量計的下限，也就是说必须满足流体流速不得低于5m/s。根据用汽量的大小选用不同口径的涡街流量变送器，而不能以现有的工艺管道口径来选择变送器口径。

04.壓力補償壓力變送器的選擇

由于飽和蒸汽管路長，壓力波動較大，必須采用壓力補償，考慮到壓力、溫度及密度的對應關系，測量中只采用壓力補償即可，由于管道飽和蒸汽壓力在0.3-0.7MPa範圍，壓力變送器的量程選擇1MPa即可。

05.顯示儀表選擇

顯示儀表智能流量顯示儀，具有穩壓補償、瞬時流量顯示和累積流量積算功能。

應用領域 / Application field

卡箍连接式渦街流量計应用于石油、化工、冶金、机械、造紙，以及城市管道供热、供水、煤氣等行业的各种低黏度液体、气体、蒸汽等单相流体的工艺计量和节能管理。

一台滿足各類行業流量測量

石油

化工

冶金

煤氣

供水

造紙

安裝注意事項 / Installation precautions

渦街無機械可動部件，體積小，耐腐蝕，性能穩定，可直接顯示介質的工作壓力、溫度、流量以及標准狀態下的氣量，量程範圍寬，計量誤差小等優點，現已廣泛用于油氣井的生産計量和天然氣的銷售計量中。在多年來的現場應用中，我們認爲該流量計zui適合于較爲幹淨的幹氣計量，漸成爲中小用氣計量的計量儀表。要保證流量計計量准確，減少計量誤差，請注意：

1、選型合理：勿使實際zui小流量QVmin低于所選通徑流量計流量範圍下限。
2、安裝正确：渦街流量計上游的应有至少10D长度的计量直管段。直管段内壁应光滑、更不能有台阶，磨平连接法兰的焊缝，法兰垫片不能突入管道内。更不能把流量计的安裝方向装反了。试验证明：一切不合理的安裝，都将导致流量计计量值偏低。
3、遠離震蕩源，或在流量計上、下遊安裝支墩，以避免管線震動的影響。避免強磁場對流量計芯片的幹擾。
4、氣質相對幹淨：尤其不能出現液氣兩相流;氣質較髒時，應即時清洗流量計。
5、減少氣流脈動的影響：可在流量計前安裝緩沖罐，或者加長流量計上遊的計量直管段長度。
6、及時對流量計進行計量檢定，確保量值准確可靠。

我們能提供的服務 / The services we can provide

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推薦選型及報價
一
産品個性化
定制
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全國服務熱線
三
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安裝
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生産過程 / The services we can provide

01 裝配
02 標定
03 出廠檢驗
04 包裝
05 發貨

青天儀表檢定裝置 / Qingtian instrument verification device

出厂前一对一標定

3毫米-3米 MT质量法水流量標定装置

DN800mm-DN2200mm容積法實流檢定裝置

DN3-DN15mm质量法標定装置

DN65mm-DN300mm 多台串联质量法实流標定装置

熱品推薦 / Hot product

: 法兰连接式渦街流量計

渦街流量計是根据卡门涡街原理研究生产的测量气体、蒸汽或液体的体积流量、标况的体积流量或质量流量的体积流量计。主要用于工业管道介质流体的流量测量，如气体、液体、蒸汽等多种介质。

: 法兰夹装渦街流量計

LUGB法兰夹装式渦街流量計是一种常用的结构形式，其表体自身不带连接法兰，在与管道连接时，将流量计夹装于两片专用法兰之间，再用螺栓紧固即可。其特点是体积小，结构简单紧凑。同时提供专用法兰和紧固螺栓，故安裝费用低，安裝也非常方便。

: 插入式渦街流量計

插入式渦街流量計的优点是抗振性能特别好，无零点漂移，可靠性高。通过长时间对渦街流量計进行的大量波形分析和频谱分析，设计出更佳的探头形状、壁厚，高度、探头杆直径及与之相配套的压电晶体，采用先进的数控车床进行加工，确保加工的同轴度和光洁度等技術參數，配合特殊的工艺处理，从而克服渦街流量計存在的固有自振荡频率对信号的影响这个通病。

: 卡箍连接式渦街流量計

卡箍连接式渦街流量計克服了一般流量计接头需要在连接盘上匀布螺栓孔，使用螺栓、螺母将连接盘固定在管道上，造成使用成本高、操作麻烦、效率低的弊端，而改采用横切面为直角梯形的连接盘，内侧为直角梯形斜边，使用时，利用卡箍将连接盘紧固在管道上，使用成本低，省时省力。卡箍式流量计主要应用于油田等高复杂度的工作场合。

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卡箍连接式渦街流量計

石油

化工

冶金

煤氣

供水

造紙

熱品推薦 / Hot product

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