Is the V-cone steam flow meter accurate in measuring in high temperature environment?

Project Overview

Differential pressure flowmeters represented by V-cone flowmeters, balance flowmeters, orifice flowmeters, etc. play a huge role in the measurement of high-temperature and high-pressure fluids. The accuracy level of the V-cone flowmeter is in a leading position among differential pressure flowmeters. Therefore, the V-cone steam flowmeter used for steam measurement under high temperature and low pressure conditions can achieve accurate measurement of large flow rates.

Take the DQV series V-cone flowmeter of Supmea flow as an example. In a certain working condition, the working pressure is 0.5MPa, the pipe diameter is DN200, the working temperature is 280~400℃, and the flow range is 0-20t/h. At that time, the accuracy level of the V-cone flowmeter it designed was still 0.5%, and the instrument was still in good working condition after more than a year of use.

The V-cone flowmeter can be used in such harsh working conditions mainly because:

1. High temperature-resistant materials: V-cone flowmeters are usually made of stainless steel or other heat-resistant alloys As a result, these materials can withstand temperatures up to 400°C or even higher, ensuring the stability and durability of the instrument in high-temperature environments.

2. Small pressure loss: The design of the V-cone causes the fluid to pre-rotate as it passes through, reducing the pressure loss caused by the flow, allowing the instrument to maintain high measurements in a low-pressure environment. accuracy.

3. Differential pressure measurement principle: V-cone flowmeter works based on the differential pressure principle. The pressure difference between the upstream and downstream of the cone is proportional to the flow rate. By accurately measuring this differential pressure value, the flow rate can be calculated. This measurement method is highly linear and stable for high flow applications.

4. Self-cleaning function: The controlled floc area around the V-cone helps prevent the accumulation of impurities and keeps the pressure port clean, which is essential for maintaining the accuracy and reliability of the instrument. important.

5. Wide range: V-cone flowmeter has a wide range ratio, up to 60:1, which means it can maintain good measurement performance in a wide flow range, including Provides accurate results even under high traffic conditions.

6. Dynamic compensation technology: Modern V-cone flowmeters are often equipped with advanced signal processing and dynamic compensation technology, which can correct the measurement results in real time according to actual working conditions to reduce environmental changes (such as temperature). Fluctuations, etc.) on measurement accuracy.

Because of the above advantages, V-cone flowmeter can achieve accurate flow measurement in high temperature and low pressure fields.