Ultrasonic flow meter scale applications in large diameter water pipe

Abstract: ultrasonic flow meter scale information in the application of large diameter water pipe produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Circulating water as cooling medium of the cooler is widely used in petrochemical enterprises, the pipeline generally larger diameter, usually for 600 ~ 1000 mm, even more than 1000 mm. Once used a variety of flow meter to measure, such as electromagnetic flowmeter, turbine flowmeter. More flow meter manufacturers choose model price quote you are welcome to inquire, here is a scale for ultrasonic flowmeter in the application of large diameter water pipe article details. Circulating water as cooling medium of the cooler is widely used in petrochemical enterprises, the pipeline generally larger diameter, usually for 600 ~ 1000 mm, even more than 1000 mm. Once used a variety of flow meter to measure, such as the electromagnetic flowmeter, turbine flowmeter, vortex flowmeter, etc. , but because of the circulating water impurities, often appears in actual application sensor is covered by debris or winding and affect the normal use, to provide accurate traffic data. As most companies understanding of energy measurement update and increase of demand, in some large diameter straight pipe or the stability of the circulating water flow by the lack of precise measurement, become a problem needs to solve. In recent years, with the continuous development of multichannel ultrasonic flowmeter technology and mature, the ultrasonic flowmeter with small amount of easy installation and maintenance, wide measuring range, to adapt to the complex flow state in pipeline structure and distribution of optimal point and solve the technical problems of large diameter circulating water flow measurement. 1 the characteristics of large diameter water pipe measurement due to the circulating water pipe size is larger, traffic is very big also, a slight deviation in the operation of the instrument, there would be a very big measurement error. To get the accurate traffic data, need in the process of measure to achieve the following requirements: (1) the pressure loss is small. Due to the energy loss is proportional to the loss of pressure and flow rate of the product, if the pressure loss is too big, can make the fluid kinetic energy loss in case of flow meter long running huge, cause energy waves. For the large diameter pipe precise metering, need to be in the process of measuring the pressure loss is small enough. (2) can realize on-line maintenance. Because of large diameter pipe installation place is wet and it is not easy to stop maintenance, it is very difficult to furnish flowmeter and bypass arrangements, even if equipped with a bypass valve, opening and closing is difficult, and hard to ensure that the valve tightly, so choose the measuring instrument should be small amount of maintenance and convenient for maintenance. (3) in the medium of sundry small effects. For circulating water piping within the medium contains more impurities, pipeline Canon often contain dirt, grease, sundry etc, should be paid attention to mechanical strength and the impurities of the measuring element of pollution in the water, winding, coverage, and other issues. So should choose no moving mechanical parts or sensor is not easily affected by the measuring instrument. (4) can realize on-line calibration. Calibration when big pipe diameter, flow is big, there are a lot of trouble and difficulties, therefore can only be in the operation of the on-line calibration. 2 other type flowmeter application problems existing in the circulating water meters large caliber to roughly the following several kinds: ultrasonic flowmeter, electromagnetic flowmeter, vortex flowmeter, differential pressure flowmeter, etc. , all kinds of flowmeter major problems are as follows. 2. Electromagnetic flowmeter is 1 electromagnetic flowmeter using the electromagnetic induction principle to determinate the catheter in the conductive liquid average flow velocity, further calculate volume flow of liquid. It has the merits of small pressure loss, and not be measured, such as temperature, pressure, viscosity of fluid, can be measured with impurity liquid, wide range, large caliber, responsive, straight pipe before and after the request is not high, corrosion resistance, long life and other significant advantages, therefore widely used in the circulating water metering. But still there are some problems in the practical work: (1) measurement error affected by external electromagnetic fields. So when installation should pay special attention to avoid violent vibration and ac/dc magnetic field. (2) affected by the velocity distribution in flow velocity under the condition of axial symmetry distribution, traffic signal is proportional to the average flow velocity, because of the influence of velocity distribution and vortex flow meter straight pipe upstream due and certain length, generally preferable 5 d. (3) electrode surface easy to pollution. In measuring adhesion sediment flow, the pollution on the electrode surface, often cause zero drift, so in use, attention should be given to the regular cleaning of the electrodes. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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