Vortex flowmeter can replace orifice meter scale scale?

Abstract: the scale vortex flowmeter can replace orifice meter scale? Information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Zui vortex flowmeter are nearly always received a lot of customers ask us whether can replace orifice meter? Now today is whether the two products can replace explain for everybody. One, the vortex street flowmeter on vortex flowmeter products products by basic structure. More flow meter manufacturers choose model price quote you are welcome to inquire, here is whether the scale vortex flowmeter can replace orifice meter scale? The article details. Zui vortex flowmeter are nearly always received a lot of customers ask us whether can replace orifice meter? Now today is whether the two products can replace explain for everybody. Vortex flowmeter are a, about basic structure of vortex street flowmeter products by vortex happens body, detecting element, signal processing of amplifying circuit, current research body for causing vortex street has reached a fairly perfect degree, in triangular body type for the body, detecting element has a thermistor, strain gauge, piezoelectric crystal, differential capacitance, ultrasonic, etc. There are many signal processing part is realized. Vortex street flowmeter has convenient installation, Can be directly installed on the pipeline) , small volume, strong interchangeability, high precision and can be applied to measure most liquids, gases and vapors. The present of vortex flowmeter in the world market sales increasing by about 30% a year. Second, the orifice meter on orifice meter products are the standard orifice plate with multiple parameters of the differential pressure transmitter, Or differential pressure transmitter, temperature transmitter and pressure transmitter) Form a complete set of high contrast range pressure flow device, can measure the rate of flow of gas, steam, liquid and gas, orifice throttling device because of its simple structure, low cost and reliable, it is suitable for almost all media measurement, and the differential pressure transmitter associated development is rapid, its itself is insufficient to make up for. Widely used in petroleum, chemical industry, metallurgy, electricity, heating, water supply in areas such as process control and measurement. At present, the orifice meter technology development level still to determine the basis of the empirical formula, the international organization for standardization, 1980 with R541 R781 two merged into standard ISO5167 ( 1980). 。 Three, two products comprehensive performance evaluation of vortex street flowmeter ( Vortex street) Only three static sealing point, not easy to leak, no dead zone, without thermal insulation, are not affected by severe fluid, temperature, pressure, and viscosity, flow coefficient unchanged for a long time. Orifice meter ( Orifice plate) Through throttling a pressure device and differential pressure transmitter, pressure guide tube for easy cold place requires heating measures, a flow measurement circuit of the static sealing point is about 20, the use of the following problems: easy to cold, easy to block, easy to leak, heating cause differential pressure transmitter components ageing, some occasions add spacer guide pressure tube and unstable due to heating or process operation, positive and negative guide spacer fluid pressure pipe line, often produce liquid column is poor, the flow indicator is not allowed. Above change will make the flow coefficient, measurement accuracy is reduced, pipe shortened lead pressure differential pressure transmitter directly installed on the pipeline, but there are still a flow dead zone. But there are vortex in vibration occasions, when using can make the flow measurement is not allowed. At present, the market has launched anti vibration type vortex street, to overcome the effects of vibration is not allowed for flow measurement. （ 1) Initial investment in a imported vortex street is about 20000 yuan ( DN15 - DN50) And a throttling device including differential pressure transmitter, orifice plate and flange, pressure pipe, valves, heat preservation box or protection box also need to 1. 50000 yuan, from a long-term point of view, using vortex street is still worthwhile. ( 2) Installation cost vortex street is simple, just before and after the meter has certain straight pipe, line segment, concentricity, orifice tube, and transmitter incubator has certain vortex street is the cost of installation requirements, several times. （ 3) Maintenance vortex street except on the metering requires periodic calibration, generally do not fail, while the orifice otherwise, leakage, regular drainage, irrigation, spacer, replace the pressure pipe, valves, heat preservation, clean the orifice plate, etc. , have a certain amount of maintenance. Such as 200 sets of flow orifice measurement circuit ( Need to heat preservation heat tracing) , every two years, the heat preservation heat tracing system reform will have to put some repairs, this does not include the differential pressure transmitter updates, orifice renewal fees. It enough to buy a certain quantity of imported vortex street. （ 4) Running cost 1, steam consumption expenses such as 200 sets of flow orifice measurement circuit ( Need to heat preservation heat tracing) , each with hot steam 0. 02 t/h, if calculated by an average of 4300 hours a year, steam cost is 40 yuan/ton, it needs steam consumption cost is about 68 a year. 80000 yuan, each loop annual cost is zero. 3. 44 million yuan. 2, energy costs, the pressure loss of vortex street is smaller than orifice, about 1/15 of the orifice plate. Therefore, long-term operation of pump and fan can cost less. Orifice plate is 15 times of vortex street, when used for gas or steam flow measurement, due to the density is small, the same pipe diameter volume flow is big, the pressure loss is more serious, energy consumption cost is higher.

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