Main points of use and installation of vortex flowmeter

Abstract: The key points for the use and installation of vortex flowmeters are provided by excellent flowmeter and flowmeter manufacturers. Main points of use and installation of vortex flowmeter Vortex flowmeter is a new type of flowmeter. Due to the characteristics of high precision, strong adaptability, wide application range and simple installation, it is widely used in the chemical industry. Today, Qingdao Xinbo Instrument Ltd push. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the article on the use and installation of vortex flowmeters. Main points of use and installation of vortex flowmeter Vortex flowmeter is a new type of flowmeter. Due to the characteristics of high precision, strong adaptability, wide application range and simple installation, it is widely used in the chemical industry. Today, Qingdao Xinbo Instrument The installation points of the vortex flowmeter are introduced to share with you. The installation direction of the vortex flowmeter cannot be installed on the reverse vortex flowmeter.“→”It should be consistent with the flow direction of the process medium. The sensor of the large-diameter plug-in vortex flowmeter should be perpendicular to the axis of the pipeline, and the flange connection type should be coaxial with the process pipeline. When installing the vortex flowmeter, ensure the length of the upstream and downstream straight pipe sections (1) The general requirements of the vortex flowmeter for the front and rear straight pipe sections are: 20 D in the front and 5 D in the back (D is the inner diameter of the connected process pipeline). The valve is generally designed on the downstream side of the flowmeter. (2) When the flowmeter is installed at the outlet of the compressor, blower and plunger pump, a valve needs to be installed on the upstream side of the flowmeter. In this case, in order to ensure the measurement accuracy of the flowmeter, the length of the upstream straight pipe section shall not be less than In addition to 20 D, install a current limiting or buffer device on the upstream side, as shown in Figure 1: (3) For process pipelines with variable diameter requirements, the length of the front and rear straight pipe sections should be ensured not less than 10 D and 5 D respectively. ; If a gate valve must be selected on the upstream side of the flowmeter, the length of the straight pipe section should not be less than 40 D, as shown in Figure 2. (4) The source components such as temperature and pressure should be installed on the downstream side of the vortex flowmeter, and the distance requirements are shown in Figure 3: the distance requirements between the vortex flowmeter and the source components. The vortex flowmeter should be installed to ensure that the inside of the vortex generator is filled with medium when it is working. The vortex flowmeter can measure the flow of liquid, gas and steam, and can be installed on pipes in horizontal, vertical or even any angular position. , However, in either case, it must be ensured that the inside of the flowmeter can be completely filled with the same medium during the working state. (1) For the connected process pipeline, its inner diameter should not be smaller than the inner diameter of the flowmeter, and the inner diameter of the gasket used for flange connection should be larger than the inner diameter of the flowmeter itself, otherwise bubbles or negative pressure vacuum will be generated, which will affect the measurement accuracy. (2) When installing a horizontal pipeline for measuring liquid media, air bubbles inside the flowmeter should be avoided due to improper pipeline arrangement, as shown in Figure 4(a); when installing a vertical pipeline, the flow direction of the medium is required to be upward. When it is unavoidable to face downward, the negative pressure formed by gravity should be considered to avoid causing the inside of the flowmeter not to be completely filled with the measured medium, as shown in Figure 4(b). Precautions for pipeline cleaning and purging Pipe cleaning and purging cannot be carried out together with the flowmeter. For flanged vortex flowmeters, replace the flowmeter temporarily with a substitute short joint. For plug-in flowmeters, remove the flowmeter first. , and then cleaning or purging to avoid damage to the flowmeter. The use environment of vortex flowmeters (1) There are many types of vortex flowmeters, and the use ranges of different types and models of flowmeters are different, such as ambient temperature, medium temperature, measurement accuracy and pipe diameter, etc. When installing Pay attention to its model and other technical parameters, and take corresponding measures according to its technical requirements. (2) The vortex flowmeter should be installed away from power lines, high-power electrical equipment and other places with strong electromagnetic interference. (3) The vortex flowmeter is sensitive to the influence of vibration, so the installation location should be kept away from the vibration area. If it must be installed in the vibration area, a pipe bracket should be installed on the connected pipeline to fix it. Grounding requirements for vortex flowmeter (1) In addition to the signal grounding and cable shielding grounding required by the specification, the flowmeter body should also be grounded, and the grounding resistance value meets the design requirements. If the design has no requirements, it should generally be less than 10Ω. (2) When the sensor and the transmitter are installed separately, the electrical continuity of the connecting cable should be ensured. Generally, a special connecting cable is provided, and the shielding layer should be well connected during wiring. Article source: Internet, if any copyright is involved, please delete it! The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Key points of use and installation of vortex flowmeter'

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