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How does an orifice flowmeter calculate flow rate? Can you explain it to me?
Orifice flowmeter is essentially a differential pressure flowmeter. The flow calculation of differential pressure Bi Jue flowmeter is achieved by collecting the pressure difference between the high-pressure side and the low-pressure air side, and then calculating and displaying the instantaneous flow rate and cumulative flow rate through a flow integrator..
2. Treatment equipment for domestic sewage treatment
Introduction to electromagnetic flowmeter. Electromagnetic flowmeter is a standardized product of Huaneng Automation Instrument Co., Ltd. The measurement principle of this electromagnetic flowmeter is programmed according to Faradays electromagnetic law, and it uses single-chip embedded technology to achieve digital excitation. It can also be equipped with 4-20mA electric reed current output signal for recording or regulating use. The main components of the sensor are: measuring tube, electrode, excitation wire blind ring, iron core and shell.
. The HNLD electromagnetic flowmeter is mainly used to measure the volume flow rate of conductive liquids and liquids in closed pipelines. Liquids include acidic liquids, alkaline liquids, salt liquids, and other corrosive liquids. It is widely used in industrial fields such as chemical, petroleum, textile, papermaking, metallurgy, pharmaceuticals and water treatment, environmental protection, municipal management, and water conservancy construction. Introduction to Orifice Flow Meter Orifice flow meter is a standardized product of Jiangsu Huaneng Automation Instrument Co., Ltd. This orifice flow meter is a newly developed flow differential pressure generating device
3. Comparison of pressure loss between orifice flowmeter and Velbar flowmeter
The pressure loss of Velbar flowmeter is much lower than that of orifice flowmeter, and its permanent pressure loss reduction ratio can reach 98.88%. It is an efficient and energy-saving flow measurement device.
. The following analysis is conducted from three aspects: principle, pressure loss calculation, and practical cases. The measurement principle and pressure loss source are both based on the differential pressure measurement principle: when the fluid flows through the throttling device, local contraction causes an increase in flow velocity, resulting in a static pressure difference between upstream and downstream. The essence of pressure loss is the irreversible conversion of fluid mechanical energy into thermal energy, mainly due to the formation of vortices and friction along the way. Orifice flowmeter: When fluid passes through an orifice plate, a large number of vortices are formed due to severe contraction/expansion of the orifice, and the fluid rubs violently against the orifice plate wall, resulting in significant pressure loss. Weiliba flowmeter: adopting a bullet shaped design and streamlined structure to allow fluid to pass smoothly and reduce vortex areas; At the same time, the surface is smooth, reduci