What skills does the orifice flow meter itself use?

Abstract: What skills information is used by the orifice flow meter itself is provided to you by excellent flow meter and flow meter manufacturers. The deformation of the orifice flowmeter will affect the displayed value of the flow measurement. There is no standard and no experimental data, but the direction of the influence is easy to see. The degree of deformation of the orifice plate varies greatly. When the deformation is serious, it will be related to the flow rate of the nozzle. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the skills articles used by the orifice flowmeter itself. The deformation of the orifice flowmeter will affect the displayed value of the flow measurement. There is no standard or experimental data, but the direction of the influence is easy to see. The degree of deformation of the orifice plate varies greatly. When the deformation is serious, it will be somewhat similar to the nozzle flowmeter. From the standard of the throttling device, it can be known that the coefficient of the standard orifice plate flowmeter is more, and the flow out of the nozzle The coefficient is 0.99, which is used as the standard for analysis. After the orifice flowmeter is deformed, its actual outflow coefficient will increase accordingly, and the flow indication value will be correspondingly low. The orifice flowmeter uses its own function, Used in various industries, the sonic nozzle method gas flow standard device of the orifice plate flowmeter is currently the largest flow device of the same type in China, with the highest degree of automation and the most advanced standard measurement device. It can measure natural gas. , air, steam and other different gas flow verification work, providing reliable data for enterprise energy measurement and energy saving and emission reduction. The pressure of the orifice flowmeter does not shrink or protrude in the measuring tube because the flow is monitored. In the previous design concept, the orifice flowmeter was affected by external factors, and there was no shrinkage or pressure in the measuring tube. The bulging pressure loss, the initial signal detected by the flow element, is a voltage that varies precisely linearly with the average fluid velocity. The orifice flowmeter is simple in structure, reliable in use, accurate in measurement, and very convenient in inspection and maintenance. The throttling device is a throttling caused by the artificial medium circulating in the pipeline. When the measured medium is a flow throttling device, it will cause a local contraction phenomenon. , will cause a static pressure difference generated on the upstream and downstream sides of the orifice flowmeter, and the static pressure difference has a certain functional relationship with the flow rate. The greater the flow rate, the greater the static pressure difference it produces, so the flow rate of the flowmeter can be measured by measuring the differential pressure. There are many medium methods for measuring the flow through the pipeline, but the most common and widely used is the orifice flowmeter throttling device (differential pressure flowmeter), which is composed of a differential pressure gauge and a throttling device or a throttling device. The device is composed of the differential pressure transmitter connected to the secondary instrument. The orifice flowmeter has a long history and has been standardized internationally or domestically. The throttling device is a primary element in differential pressure measurement, and is a differential pressure signal generated by the fluid it uses in the pipeline. The pressure guiding pipe transmits the differential pressure signal generated before and after the throttling device to the differential pressure transmitter and then sends it to the secondary instrument, which can display the instantaneous flow or cumulative flow of the liquid in the pipeline. Flow is adjusted. Before installing the orifice plate flowmeter, check that the throttling device and the size match do not meet the position requirements in the pipeline. Pay attention to the installation direction of the flowmeter.“+”The number is towards the flow velocity. The flowmeter must be installed tightly, and no flow leakage is allowed. In this way, the pressure must be tested in the pipeline before installation. In the new pipeline system, the line must be swept in the pipeline or Flushing is performed during flowmeter installation. In order to avoid that the differential pressure signal transmission of the flowmeter is useless, it is best to lay the positive and negative pressure guiding pipes as hard as possible, and take antifreeze measures when it is cold, and electric heat or steam insulation can also be used. method, but also to prevent the superheating of the measured medium and the gas generated in the pressure guiding tube from causing false differential pressure signals. When the orifice flowmeter is installed on the vertical main pipeline, the position of the pressure taking port can be selected arbitrarily. The pressure guiding pipe is made of pressure-resistant and corrosion-resistant materials according to the properties of the measured medium. The pressure taking method is to take the pressure by drilling the flange alone, circular pressure equalizing, ring pressure taking or square equalizing pressure. plate. The flange pressure orifice flowmeter is used in the oil refining system when the center position of the upstream and downstream pressure holes must be 1 on both sides of the orifice regardless of the diameter of the pipeline. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'What skills does the orifice flow meter itself use?'

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