Differential pressure flowmeter insertion type - homogeneous tube flowmeter

Project Overview

Averaging tube flowmeter, also known as Annubar flowmeter (Annubar) or flute-shaped averaging tube flowmeter, Topa tube flowmeter, is a type of flowmeter developed after the 1960s based on the Pitot tube speed measurement principle. A differential pressure flowmeter. This flow meter is designed to measure the volume flow of fluids (such as liquids, gases, steam) in pipes and is widely used in industrial process control.

Basic structure and working principle

The core component of the velocity-equalizing tube flowmeter is a hollow metal rod with pairs or unevenly distributed pressure measuring rods drilled in the upstream direction. hole. When fluid flows through these holes, a high-pressure area is formed at the front end of the rod and a low-pressure area is formed at the rear end, creating a differential pressure. This differential pressure is related to the average flow rate of the fluid. By measuring this differential pressure and combining the physical properties of the fluid (such as density, temperature, pressure) and pipe size, the volumetric flow rate of the fluid can be calculated.

Features and advantages

1. Low pressure loss: compared to Compared with traditional orifice flowmeters, the velocity-averaging tube flowmeter can significantly reduce the pressure loss when the fluid passes through due to its design features, which is especially important for systems that require energy saving or high-pressure processing.

   

2. Wide applicability: It is suitable for measuring a variety of media such as dry gas, moist gas, liquid or steam, and is not limited by dielectric constant. The applicable pipe diameter range is very wide, ranging from a few millimeters to more than ten meters. < /p>

3. High precision and stability: With the advancement of velocity-averaging tube cross-section technology and hole opening technology, its measurement accuracy continues to improve, and it also has good stability and repeatability..

4. Easy to install: As an insertion flow meter, installation and maintenance are relatively simple and will not interrupt the process flow, which is especially beneficial for large-diameter pipelines.

5. Economy: Low long-term operating costs, because the pressure loss is small, energy consumption can be saved, and maintenance is simple.

   

Application fields

Velocity tube flow meters are widely used in many industrial fields such as electric power, chemical industry, petroleum, metallurgy, and food processing, especially In situations where precise measurement is required and are sensitive to pressure loss, such as energy measurement, process control, environmental monitoring, etc.

Summary

Velocity tube flowmeter is a high-efficiency flow measurement tool commonly used in modern industry. With its unique design, it can reduce energy consumption while ensuring measurement accuracy. , adaptable to a wide range of working conditions, and is one of the ideal choices to replace the traditional orifice flow meter.