The new flow meter begins the most new application in the cement industry

Abstract: The latest application information of the new flow meter in the cement industry is provided by the excellent flow meter and flow meter production and quotation manufacturers. 1. New flowmeters are used in the cement industry. Various flowmeters are widely used in chemical, petrochemical steel, electric power, heating and water treatment industries to measure the flow of various liquids and gases. With the continuous demand for flow measurement in the industrial field. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the new application of new flowmeters in the cement industry. 1. The new type of flowmeter has been used in the cement industry. Various flowmeters are widely used in chemical, petrochemical steel, electric power, heating and water treatment industries, and are used 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 have appeared in the market, and they are named with different modified terms according to the measurement mechanism, such as Coriolis, ultrasonic, electromagnetic, vortex flowmeters, etc. , Compared with the traditional positive displacement, Venturi and mechanical orifice flowmeters, the new flowmeters have more novel features and are significantly better than the old flowmeters in terms of accuracy, reliability, repeatability and maintainability. In these devices, there are few or no moving parts that are prone to wear; most flowmeters are non-intrusive elements, with less pressure drop and better safety; many meters are equipped with micro The processor, which can perform self-diagnosis and other functions, can provide users with real-time feedback and historical data collection. Compared with other industries, various flowmeters are less used in the cement industry. This is because the main media in the production process are material flow and air flow, while powder and particles are the main medium in the material flow. In the main process flow, liquid materials are used. There is almost no flow, and the airflow also contains a certain amount of dust and passes through a large pipe, 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 production lines with a daily output of 5,000 tons have not measured the flow of high-pressure air, but estimated by measuring the electrical power output by the high-pressure roots blower. flow. 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. As the scale of cement production increases and the technological process is constantly updated, flow measurement and new flow meters have also begun to be applied in the cement industry. 1. Measurement of gas flow in large pipelines, some dry cement production lines introduced in the early days, foreign companies proposed to detect gas flow at the outlet of the kiln and in the large pipeline for waste gas treatment and adjust the relevant valves accordingly. Even velocity tube flowmeter, etc., but it is too difficult to use. Since the flow measurement does not affect the production of cement, it has not been used since then. With the continuous update 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 3300-ton 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 the 3,000-ton cement production line per day is generally about 800 mm. In the flow measurement specification, the pipe diameter greater than 200 mm 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 plate surface is stained, and the pipeline accumulates and condenses. ash, it needs to be replaced after wear; the orifice flowmeter also has the disadvantages of small range ratio, low precision, and large irreversible pressure loss; for large-diameter pipelines, large flanges are required, and its price, installation cost and maintenance are also one. 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 a new type of differential pressure equalizing velocity tube flowmeter in the market, it has solved the problem of measuring gas flow in large pipelines. It has the characteristics of large range ratio, high precision, and small irreversible pressure loss. To prevent dust in the gas from clogging the measuring sensor. This article will focus on the working principle, basic structure, performance characteristics and applications of the new differential pressure equalizing velocity tube flowmeter.

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