Venturi flow meter installation and inspection

Abstract: Venturi flow meter installation and inspection information is provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. 1. Classification of Venturi flowmeters: Venturi flowmeters are divided into pipeline Venturi flowmeters and insertion Venturi flowmeters according to their equipment methods: 1. Pipeline Venturi flowmeters can be divided into classic Venturi flowmeters Flowmeter (generally piping) and built-in. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the installation and inspection of Venturi flowmeters. 1. Classification of Venturi flowmeters: Venturi flowmeters are divided into pipeline Venturi flowmeters and insertion Venturi flowmeters according to their different equipment methods: 1. Pipeline Venturi flowmeters can be divided into classic Venturi flowmeters Flowmeters (general pipelines) and built-in venturi flowmeters are mainly for flow measurement of various gases with large diameters, low flow rates and large flows in industrial enterprises. They have a unique structural design and are used in large national key wind tunnels The laboratory conducts real-flow calibration. It can be widely used in the control and measurement of large-diameter fluids in industries such as petroleum, chemical industry, metallurgy, and electric power. 2. The plug-in Venturi flowmeter is mainly used for field applications where the diameter is too large, the straight pipeline of the equipment is short, or the location of the equipment is limited and the flow measurement accuracy is not required. Low-level features are currently often used to replace the built-in venturi and wing wind measurement equipment for the measurement of wind flow. According to different processing methods, it is divided into classic Venturi flowmeter with shortened section of rough casting, Venturi flowmeter with shortened section of machining, and Venturi flowmeter with shortened section of rough welded iron plate. 2. Precautions for the installation of Venturi flowmeter: 1. First, intercept two straight pipe sections with the same pipe diameter as the pressure-taking elbow, and the length is more than 1 times the diameter. (Venturi flowmeter) 2. On a platform with better conditions, weld the intercepted two straight pipe sections and the pressure-taking elbow in a 90-degree vertical state, and ensure the welding quality. 3. Weld the prefabricated pipeline on the rack and the process pipeline. (Venturi flowmeter) 4. Weld the venturi sensor and the process pipeline to make it work in a horizontal space state as much as possible. When the site does not have horizontal installation conditions, it can be installed in a vertical space state. (Venturi flowmeter) The Venturi tube flow sensor is connected with the process pipeline by flange, which can be connected with the process pipeline in a horizontal space state according to the flow direction of the sensor mark. When the venturi is installed, the length of the straight pipe section at the front end should be greater than 5 times the diameter, and the length of the straight pipe section at the rear end should be greater than 2 times the diameter. (Venturi flowmeter) 3. Inspection before the Venturi flowmeter works: 1. Check whether the piping, installation and wiring of each transmitter are correct. 2. Check whether all welding interfaces and threaded joints are tight and leak-free. (Venturi flowmeter) 3. Check whether the wiring of the secondary instrument is correct, and whether the wiring with each transmitter is correct, and focus on checking the position of the power connector. 4. After the above checks are correct, turn on the power supply of the secondary instrument. (Venturi flowmeter) Fourth, the main characteristics of Venturi flowmeter: 1. Simple structure, durable, stable performance, not easy to block. 2. The pressure loss is small, saving the power required for flow transmission, and can be used for the measurement of complex flow such as two-phase flow, mixed-phase flow, low flow rate, large pipe diameter, and special-shaped pipe. 3. High accuracy, good repeatability, small pressure loss, and short straight pipes required. 3. In the diameter range of 50-1200, no real flow calibration is required. Beyond this scale, you can refer to the planning and production. When higher accuracy is required, real-flow calibration can be performed. 4. The size of the main body equipment is relatively large. Regarding the large-diameter appearance, it is not convenient to transport the equipment. You can consider using a standard orifice plate, or a plug-in double Venturi flowmeter. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection of our manufacturer, quotations, etc. 'Venturi Flow Meter Installation and Inspection'

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