Overview.
Glass float flowmeter belongs to the variable area flow meter, mainly used in chemical industry, petroleum, light industry, medicine, fertilizer, chemical fiber, food, dyestuff, environmental protection and scientific research and other departments, used to measure the flow of single-phase non-pulsating (liquid or gas) fluid.
Corrosion-resistant flowmeter is mainly used for corrosive liquid, gas medium flow detection, such as strong acids (except hydrofluoric acid), strong alkalis, oxidizers, strong oxidizing acids, organic solvents and other corrosive gas or liquid medium flow detection.
The measuring cone tube of LZB type uses smooth conical glass tube, and LZJ type uses ribbed conical glass tube.
◆Product execution standard: JB/T9255~2015 (industry standard)
◆General standard of flange: GB/T9119-2010 (national standard) Refer to GB/T9119-2000 (national standard)
(DN15~50mm for PN1.0MPa)
(DN80~100mm for PN0.6MPa)
◆Type approval certificate: 2010F449-33 2010F450-33
Working principle.
The main measuring element of the flowmeter is a vertically mounted small conical glass tube and the float that can move up and down inside the tube. When the fluid flows through the conical glass tube from the bottom up, a pressure difference is generated between the upper and lower float, and the float rises under the action of this differential pressure. When this rising force, the buoyancy force and viscous force on the float and the float's gravity equal, the float is in equilibrium position. Therefore, the fluid flow through the flowmeter and the float rise height, that is, with the flowmeter circulation area there is a certain proportional relationship between the float position height can be used as a measure of flow.
Features.
1. Small pressure loss
2. Reliable performance, easy and intuitive reading
3. Simple structure, easy to install and use
4. Cheap price
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目前,我国用以天然气流量计量的天然气流量计商品大概有:气体腰轮流量计、气体涡轮 流量计、旋进旋涡流量计、涡街 流量计、超音波流量计和填料流量计等。下面我们就这些流量计的应用做个简单较为。
气体腰轮流量计气体腰轮流量计又称作罗茨流量计,不仅可用来计量干气,也可以来计量湿气(即伴生气)。因为填料流量计和涡轮流量计不适合测量含有液体的伴生气,气体腰轮流量计因没有严格要求,因此相对具备一定的优势。
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