Selection of Gas Turbine Flow Meters

Abstract: The selection information of gas turbine flowmeters is provided by excellent flowmeter and flowmeter manufacturers. The selection of gas turbine flowmeter should be considered from the following aspects: 1. Gas density: For gas turbine flowmeter, the influence of fluid physical properties is mainly gas density. It has a greater impact on the meter coefficient and is mainly in the low flow area. If the gas density changes. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following are the details of the selection article of gas turbine flowmeters. The selection of the gas turbine flowmeter should be considered from the following aspects: 1. The density of the gas: on the gas turbine flowmeter, the influence of the physical properties of the fluid is mainly the gas density. It has a greater impact on the meter coefficient and is mainly in the low flow area. If the gas density changes frequently, corrective measures should be taken to the flow coefficient of the flowmeter. 2. Flow range: The selection of the flow range of the turbine flowmeter has a great influence on its accuracy and service life, and each type of flowmeter has a certain measurement range, and the selection of the flowmeter diameter is also determined by the flow range . For intermittent working occasions where the actual running time of the instrument per day is not more than 8 hours, select 1.3 times the maximum flow rate in actual use as the upper limit of the flow range; for continuous working occasions where the actual running time of the instrument per day is not less than 8 hours, select the 1.4 times the maximum flow rate during use as the upper limit of the flow range. The lower limit flow rate of the instrument is appropriate to be 0.8 times the actual minimum flow rate. 3. Pressure loss: try to choose a turbine flowmeter with a small pressure loss. 4. Accuracy level: It is not the higher the better, it is the most important to choose the right one according to the actual situation! Generally speaking, the selection of turbine flowmeter is mainly based on its high accuracy. However, the higher the accuracy of the flowmeter, the more sensitive it is to the changes in the on-site use conditions. Therefore, the selection of the accuracy of the meter should be cautious and should be considered from an economic point of view. For trade settlement instruments for large-diameter gas pipelines, it is cost-effective to invest more in instruments. For occasions where the conveying volume is not large, the medium precision level can be selected. 5. Structural type: (1) The reverse thrust turbine flowmeter should be selected for the internal structure. Because the reverse thrust structure can keep the impeller in a floating state within a certain flow range, there is no contact point in the axial direction, and there is no end face friction and wear, which can prolong the service life of the bearing. (2) According to the pipeline connection method, the flowmeter has two types of horizontal and vertical installation. The horizontal installation and pipeline connection methods include flange connection, threaded connection and clamp connection. Flange connection is used for medium diameter; threaded connection is used for small diameter and high pressure pipelines: clip-on connection is only suitable for low pressure, medium and small diameter pipes; vertical installation only has threaded connection. (3) Select the type according to the environmental conditions, and consider the influence of temperature and humidity. Natural gas metering should choose intrinsically safe explosion-proof turbine flowmeter. 6. Bearings: The bearings of turbine flowmeters are generally made of three types of materials: tungsten carbide, polytetrafluoroethylene, and carbon graphite. Natural gas measuring instrument bearings should be made of tungsten carbide. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Selection of Gas Turbine Flow Meters'

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