Incorrect installation of smart vortex flow meter, resulting in inaccurate measurement cases

Abstract: The intelligent vortex flowmeter is installed incorrectly, resulting in inaccurate measurement. The case information is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. There are six sets of intelligent vortex flowmeters in a refined oil bulk platform of an oil refinery, which are only used for loading monitoring. The measurement relies on the ground balance. Ask the reason, that the intelligent vortex flowmeter is not allowed. Analysis: On-site inspection found: (1) The six sets of intelligent vortex flowmeters are three sets (three. More flowmeter manufacturers select models and price quotations are welcome to inquire, the following is the incorrect installation of intelligent vortex flowmeters, The details of the case article leading to inaccurate measurement. There are six sets of intelligent vortex flowmeters on the bulk platform of refined oil in an oil refinery, which are only used for loading monitoring. And the measurement relies on the ground balance. Ask the reason, it is said that the intelligent vortex flowmeter is inaccurate Analysis: On-site inspection found: (1) The six sets of intelligent vortex flowmeters are three sets (three loading bays) for diesel oil and three sets (three loading bays) for gasoline, all relying on oil storage The tank level difference (more than ten meters above the flowmeter position) is self-flowing for loading, and there is no pressurized oil pump, so only one parking space can work when loading. When this happens, it seems that the user does not understand. This kind of intelligent vortex street Under the rated flow of the flowmeter, the pressure loss is large, which can exceed 0.1MPa. (2) Six intelligent vortex flowmeters are regularly inspected every year. Compared with the ground balance, the difference is quite large, up to a few percent, so I dare not use it as a meter. (3) The installation of the six intelligent vortex flow sensors is unqualified. This is the main reason for the abnormal operation. The actual installation situation As shown in the picture: Because of the two support brackets of the flow sensor·are supported on the measuring tube of the sensor·This is absolutely not allowed. For the installation of intelligent vortex flowmeter sensor, the following installation principles are specially proposed: in order to eliminate the unbalanced stress generated when the measuring tube is installed·It is not allowed to install support points on the measuring pipe; it is required to add a short pipe at each end of the measuring pipe, and the two support points should be moved to the left and right to the dotted line in the figure. Secure the flow measuring tube, and never allow the measuring tube frame to support the pipes on both sides. (4) According to the operator of this post, when the six intelligent vortex flowmeters are disassembled and sent for inspection, the flanges (ports) of the pipelines on both sides of the six intelligent vortex flowmeters are neither parallel nor concentric, and even some The dislocation of the flanges on both sides is serious. The pipelines on both sides are greatly dislocated, and they are pulled and pulled hard. When they are placed on the measuring tube of the intelligent vortex flowmeter, can unbalanced stress be generated on the measuring tube? If there is stress, the measurement will definitely not work properly. In order to solve this problem, it is recommended that they actively create rectification conditions. After adding a short tube with flanges (about 200 mm long) at each end of the flow measuring tube, the assembly is tightened (stress-free), and the overall stress-free welding on the two ends. On the end pipe (of course not to engage in stress-free welding, it can also be changed to a hose connection). The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Incorrect installation of intelligent vortex flow meter, resulting in inaccurate measurement cases'

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