Introduction to the selection of steam flow meter scale

Abstract: introduction to the selection of steam flow meter scale information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. At present, our company in the furnace, heating furnace, sintering machine and other large and medium-sized equipment widely used in the process of continuous production of coke oven gas, but the accurate measurement of coke oven gas has been one of difficult problems in metallurgical measurement. As many of the new type of flowmeter appear constantly, to solve it. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the introduction to the selection of steam flow meter scale article details. At present, our company in the furnace, heating furnace, sintering machine and other large and medium-sized equipment widely used in the process of continuous production of coke oven gas, but the accurate measurement of coke oven gas has been one of difficult problems in metallurgical measurement. As many of the new type of flowmeter appear constantly, provided help to solve this problem, reasonable choice of flowmeter, becomes the key to accurately measure the gas consumption. 2 2 several common flowmeter in metallurgical industry. 1 steam flowmeter flow meter is installed in the pipeline a pipe diameter smaller than the diameter of the throttle. Circulation of fluid flow in the pipeline, because of the cross section of a sudden narrowing, velocity must speed up. Accelerated, according to the law of conservation of energy flow is bound to lead to the result of the static pressure to reduce, therefore, downstream in the throttling parts produced static pressure difference between the size of the static pressure difference and flow of fluid flow, so the flow can be determined by the static pressure difference. This flowmeter is used more widely, but the design, installation, maintenance, use limitations, difficult to long-term normal operation of many occasions. 2. 2 inserted type turbine flowmeter inserted type turbine flowmeter is based on the principle of momentum conservation work. Fluid impact turbine blades, wheel speed changes over traffic trouble. So can through the turbine speed and flow rate. Advantage: this flowmeter is suitable for large and medium diameter of gas, able to withstand different range of high, medium and low pressure. Weakness: the traffic is very small, fluid is very difficult to make the turbine rotation, so the flowmeter has a certain flow rate lower limit, cannot be measured from scratch. 2. 3 ultrasonic flowmeter ultrasonic flowmeter is the use of ultrasonic pulse propagation along the downstream direction and flow direction, the reciprocal of time, the difference between the measured flow velocity, flow rate obtained. Advantages: two-way measurement can be carried out, can be used to measure large and liquid flow rate or flow in the pipeline, the flow meter installed zui is convenient. Deficiency: the measurement technology of the gas is not yet mature, can't accurate measurement of the gas. 2. 4 measuring principle of vortex flowmeters: when fluid vertically in the streamline body, low speed cases fluid formed along the edge of the object surface streamline, downstream occurs when high speed spin within two rows of alternating vortices, the frequency of vortex separation on each side in a very wide range of Reynolds number, ） , and a linear relationship with velocity formula is: advantages: have no moving parts, in the pipe service life is long, wide linear range, almost not affected by temperature, pressure, density, viscosity, such as the impact of the change, small pressure loss, high precision. My company's existing meter usage and reasonable choice at present, our company use the flowmeter is mainly of steam flowmeter. Although this kind of flowmeter using history is long, experience more, but as a result of campus network, a lot of flow meter installed in the high altitude or pressure station, less chance orifice, dismantling, maintenance. Pipe often accumulate a large amount of tar and coke oven gas, dust, water, make the orifice variant jams, rust, wear and tear, the usage of reality and the ideal requirements have bigger difference. Therefore, throttle flowmeter in many occasions is not ideal flowmeter device, particularly in the gas measurement. Inserted type turbine flowmeter has the advantages of large measuring range, the price is cheap, but it cannot be measured from scratch, not suitable for small dosage. Ultrasonic flowmeter can be two-way measurement, installation is convenient, in the aspect of water measurement technology is mature, reliable, according to the actual situation of our company, a component installation requirements with sturdy, can not stop production when maintenance, cleaning and other characteristics, selection of vortex flowmeters is more appropriate. Vortex flowmeter with triangular prism and rectangular column, t-shaped column type into pieces, its detection method mainly has two kinds, one is the frequency of flow change in the fluid vibration testing, using thermal, silk or thermal resistor as sensitive element, testing flow generated when the resistance of the change; 2 it is fluid vibration testing into pieces of the forces of the change frequency, using piezoelectric crystals or force sensitive resistance testing stress change, also can use a resistance strain gauge, the capacitance sensor and optical fiber detection of tiny displacement of stress change. Vortex street flowmeter from the fluid parameters such as density, viscosity, pressure, temperature, range is larger, without guide tube, small amount of maintenance. The pressure loss is small, high accuracy, good reproducibility, to adapt to changes in network parameters greatly; Can easily with all kinds of standard signal Ann electrical measuring instruments. Is metallurgy enterprise ideal flowmeter measurement of coke oven gas quantity. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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