Application of Precession Vortex Gas Flow Meter in Cement Industry

Abstract: The application information of precession vortex gas flow meter in cement industry is provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. Various flowmeters are widely used in chemical, petrochemical, steel, power, heating and water treatment industries to measure the flow of various liquids and gases. With the continuous improvement of the requirements for flow measurement in the industrial field, various new flow meters have been introduced in the market. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following are the details of the application of precession vortex gas flowmeters in the cement industry. Various flowmeters are widely used in chemical, petrochemical, steel, power, heating and water treatment industries to measure the flow of various liquids and gases. With the continuous improvement of the requirements for flow measurement in the industrial field, various new flowmeters are not very new in the market. They are named with different modified terms according to the measurement mechanism, such as Coriolis, ultrasonic, electromagnetic, vortex flowmeters. Compared with traditional positive displacement, venturi, and mechanical orifice flowmeters, the new flowmeters have more novelty Compared with the old-fashioned flowmeters, there are significant differences in accuracy, reliability, repeatability, and maintainability. In these devices, there are few or no moving parts that are prone to wear; most flow meters are non-intrusive components, with less pressure drop and better safety; many meters are equipped with microprocessors that perform Self-diagnosis and other functions, which can provide users with real-time feedback and historical data collection. Compared with other industries, the application of precession vortex flow gas flowmeter in the cement industry is less. Particles are dominant, there is almost no liquid flow in the main process flow, and the air flow also contains a certain amount of dust, and it passes through a large pipeline, which brings great difficulty to flow measurement. Although in some process points such as the air volume of each chamber of the cooler, because the high-pressure air flow is measured, the diameter of the pipe is not large, and the traditional Venturi tube is generally used, which can be measured by differential pressure, but due to the low measurement accuracy, The flow value can only be used as a reference, and it is also difficult to use it to adjust the opening of the damper. It is also difficult to maintain a constant air volume. At present, some 5000t/d do not measure the flow of high-pressure air, but estimate the flow by measuring the electrical power output by the high-pressure roots blower. . Therefore, flow measurement was almost a blank in the cement industry in the past, and automation technicians often only know measurement sensors such as temperature, pressure, and material level. With the increase of cement production scale and the continuous updating of technological processes, flow measurement and new flowmeters have also begun to be applied in the cement industry, which are reflected in the following aspects: 1. Measurement of gas flow in large pipelines The company proposes to detect the gas flow at the exit of the kiln and in the large pipeline for waste gas treatment and adjust the relevant valves accordingly. It has used orifice plate flowmeters, flute-shaped uniform velocity tube flowmeters, etc., but it is too difficult to use in the process. The measurement did not affect the production of cement, which has not been used since. With the continuous updating of cement technology and scale, large-scale vertical mills have been widely used. In the process of vertical mills, it is required to measure the inlet and outlet air volume of the mill and keep the circulating air volume constant. For example, the 3300t/d cement production line exported from my country to Oman, The vertical mill of Feifan is used, which is required in the list of measuring points. The diameter of the outlet air duct of the raw mill of 3000t/d cement production line is generally about 800mm. In the flow measurement specification, the diameter of the pipeline is larger than 200mm, which belongs to the large-diameter flow measurement. For example, with a traditional orifice flowmeter, during operation, due to the sharp edge of the orifice of the orifice being worn, the surface of the plate is stained, and the pipeline accumulates ash , it needs to be replaced after wear; the orifice flowmeter also has the disadvantages of small range ratio, low accuracy, and large irreversible pressure loss; for large-diameter pipes, large flanges are required, and its price, installation cost and maintenance are also a Issues worthy of attention. In addition, the gas flow measurement is affected by changes in temperature and pressure, which will have a serious impact on the gas flow measurement, mainly in terms of accuracy and repeatability; in the cement industry, the measured process gas mostly contains dust, and the measurement sensor Generally, there are small holes in the middle, and the dust will easily cause the blockage of the measuring sensor. Therefore, it is difficult to measure the gas flow of the large pipeline in the cement industry, and there are many problems to be solved. With the emergence of the new differential pressure equalizing tube flowmeter, it has solved the problem of measuring the gas flow in large pipelines. It has the characteristics of large range ratio, high accuracy, and small irreversible pressure loss. Dust in the gas blocks the measuring sensor. This article will focus on the working principle, basic structure,Features and applications, etc. 2. The measurement mechanism of the precession vortex gas flowmeter is used for material measurement. In the cement process, the raw materials, intermediate products and final products are all solid, and mainly granular and powdery materials. The flow measurement of these materials is in the cement factory. It is realized by electronic belt scales and various solid flow meters, which are both process equipment and automation equipment, but are not flow meters.

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