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Integration scale pig ba flowmeter in the application of the gas flow measurement

by:Sincerity     2021-01-12
Abstract: the integration scale pig ba flowmeter in gas flow measurement, the application of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. In metallurgical industry, coal gas as important secondary energy, the instantaneous flow and cumulative flow of accurate measurement, not only affect the control effect of the control system, but also the enterprise internal marketization operation, and the important basis of cost accounting. Henan yu. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the integration of scale pig ba flowmeter in gas flow measurement, the application of article details. In metallurgical industry, coal gas as important secondary energy, the instantaneous flow and cumulative flow of accurate measurement, not only affect the control effect of the control system, but also the enterprise internal marketization operation, and the important basis of cost accounting. Henan yuguang XinYe power plant is responsible for the coordination management of gas pipeline network maintenance work. In analyses the working condition of gas composition, under the premise of survey summarizes the experience in using other gas flow metering device, the six sets of online installation type integrated pig flowmeter, and with its as the core to form a gas flow detection system. After a year of operation, the success of implementation of monitoring and measurement of the gas pipeline network in factory. 1 problem in metallurgical enterprise production, blast furnace gas and converter gas, moisture, dust and other impurity content is high, easy to produce sediment. Additional gas pipe diameter, operating pressure small, small pipe gas velocity, the flow measurement is difficult. Although the orifice meter processing installation is simple, but its range than smaller, pressure loss of the low accuracy, big, cannot satisfy the gas gauge. Previously used diamond bar due to its poor blocking resistance, differential pressure is too small, maintenance should shut down the overhaul, affected the normal production and operation, so also can't meet the requirements. Integration of online installation type 2 pig and flow characteristics of the flow meter is the rosemount products, on the principle of differential pressure test flow, very good solve the orifice meter all the problems on the big flow measurement. It has the following characteristics. 2. 1 T prevent throttling a cross-sectional design the flowmeter has the unique T prevent design structure is shown in figure 1. Work, fluid in a high throttling flat front, the fluid to bypass high granular impurities by deflection, and were flat on the back of the low pressure of stagnant area, granular impurities is difficult to take pressure hole plugging, thus reduced the risk of clogging in the high and low pressure area. Some impurity adsorption measurement precision of it won't cause catastrophic in past various velocity-equalizing tube flowmeter measurement error. Data show that when the fluid is not dry sticky impurity content is not more than 6500 mg/m3, the T pig flowmeter is almost has no effect. Figure 1 T block design ( White for the high, blue for the low pressure area) 2. Taking pressure trough hole pipe uneven flow velocity distribution in the pipe cross section, accurate speed meter to get correct average flow velocity of the fluid. The flowmeter throttle take a positive high side pressure hole for groove design, slot length across the gas pipe cross section, sampling rate of 85% or more of fluid, obtain various shape than ever before throttling of flow meter 12 times more area, and get more accurate measurement results, the average flow velocity greater flow differential pressure value. Relative differential pressure signal intensity (figure 2 Abscissa) 2. 3 online plug-in installation, installation and maintenance over the pipeline and isolation valves equipped with a specially designed installed base, and then through the isolation valve on the pipe hole and install the integration of pig flowmeter. Because of the existence of the isolation valve can make the installation and maintenance without stop the operation of the gas. Because T pig the positive pressure of flowmeter slit across the whole of the pressure piping, in improving fluid average precision at the same time, also greatly reduces the T pig flowmeter's installation requirements. Allowed in the X, Y, Z three axis direction & plusmn; The deviation of the 5 o & plusmn; 5 o deviation is people's eyes can clearly determine, installation personnel easier installation and debugging. 2. 4 real-time dynamic integration of temperature and pressure compensation pig flowmeter built in 0. Differential pressure transmitter, 0 065% accuracy. 065% accuracy of pressure transmitter, temperature transmitter, high-speed CPU and large capacity data storage. Built-in large capacity data storage to store the various fluid under different pressure and temperature in the calculation formula of the need to use the physical data, including density, viscosity, gas constant, compressibility, constant volume specific heat, etc. , according to the actual change of fluid pressure, temperature, and the corresponding data out of the database in the compensation formula calculation.
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