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1. Flow range of steam vortex flowmeter
The flow range of steam vortex flowmeter varies depending on its model and diameter. The diameter (DN) represents the diameter of the pipeline, while the flow range represents the flow value that the flowmeter can measure. The model OW-LU-25 is suitable for DN25 pipelines, with a flow range of liquid 1-10 m ³/h and gas 25-60 m ³/h. For steam flow, it is recommended to refer to the instruction manual. For large pipelines above DN300, it is recommended to use an inserted vortex flowmeter. The model OW-LU-32 is suitable for DN32 pipelines, with a flow range of 1.5-18 m ³/h for liquids and 15-150 m ³/h for gases. The model OW-LU-40 is suitable for DN40 pipelines, with a flow range of 2.2-27 m ³/h for liquids and 22.6-150 m ³/h for gases. The model OW-LU-50 is suitable for DN50 pipelines, with a flow range of liquid 4~55 m ³/h and gas 35~350 m ³/h. The model OW-LU-80 is suitable for DN80 pipelines, with a flow range of 9-135 m ³/h for liquid differential and 90-900 m ³/h for gas. The model OW-LU-100 is suitable for DN100 pipelines, with a flow range of 14-200 m ³/h for liquids and 140-1400 m ³/h for gases. The model OW-LU-150 is suitable for DN150 pipelines, with a flow range of 32-480 m ³/h for liquids and 300-3000 m ³/h for gases. The model OW-LU-200 is suitable for DN200 pipelines, with a flow range of 56~800 m ³/h for liquids and 550~5500 m ³/h for gases. Based on the above information, you can choose a suitable steam vortex flowmeter according to your pipeline diameter and understand the flow range it can measure. The steam vortex flowmeter is mainly used for measuring the flow rate of steam medium fluid in industrial pipelines. The characteristics of steam vortex flowme
2. Working principle of vortex type steam flowmeter
The vortex type steam flowmeter measures the volumetric flow rate by detecting the regular vortex frequency generated when the fluid flows through a blunt body, combined with the linear relationship between Strouhal number and fluid velocity.
. The specific working principle is as follows: a blunt body induces vortex generation vortex flowmeter by placing a nonlinear blunt body (such as a triangular column or cylinder) inside the pipeline. When steam and other fluids flow through a blunt body, they are affected by surface friction and changes in pipe cross-sectional area, causing the fluid to form periodic shedding vortices at the tail of the blunt body. Uneven distribution of flow velocity and pressure on both sides of a blunt body: the side with higher flow velocity has lower pressure, while the side with lower flow velocity has higher pressure. The fluid in the high-pressure zone moves towards the low-pressure zone, resulting in the alternating generation of vortices. Figure: Linear relationship between vortex shedding frequency and flow velocity driven by pressure difference on both sides of a blunt body. Under stable operating conditions, the vortex shedding frequency (f) and the average fluid flow velocity (u), blunt body diameter (d), and Strouhal number (Sr) satisfy the formula: f=(Sr × u)/d. Among them, the Strouhal number (Sr) is a dimensionless constant determined experimentally and remains stable within a specific Reyno