What types of steam flow meters are there?

Project Overview

For flow measurement of steam in industrial pipelines, the selection is mainly based on parameters such as medium type, medium temperature, working pressure, flow range, etc. Let’s take a look at the types of steam flow meters.

1. Vortex flowmeter:

(1) Working principle: Use the Karman vortex principle to measure the volume flow of steam. When the steam fluid impacts the triangular prism-shaped vortex generator, regular Karman vortices will be generated alternately on both sides of the vortex generator. There is a linear relationship between the vortex frequency and the average speed of the steam, so the steam flow rate can be known. However, ordinary vortex flowmeters are easily affected by vibration. "LUB series anti-vibration vortex flowmeter" is independently developed by Supmea Measurement and Control, which solves the international problems of traditional vortex flow metering range of small range and poor anti-vibration performance. The LUB series vortex flowmeter has a wider measuring range, better anti-vibration effect, and more stable operation. It is the first choice instrument for enterprise internal measurement assessment and trade settlement.

(2) Features: Large measuring range, small pressure loss, high precision, high reliability, no moving mechanical parts, low maintenance, and long-term stability of instrument parameters.

(3) Applicable scenarios: It is widely used in flow measurement of various industrial pipeline media fluids, especially suitable for large steam pipelines and high-temperature and high-pressure environments.

2. Differential pressure flowmeter:

(1) Working principle: Based on the Bernoulli equation and the flow continuity equation, by measuring the throttling device (such as Orifice plate, nozzle, V-cone, etc.) to determine the steam flow rate.

(2) Features: Simple structure, relatively low price, suitable for flow measurement of small and medium-sized steam pipelines.

(3) Common types: orifice flowmeter, nozzle flowmeter, V-cone flowmeter, etc.

3. Split-flow rotor steam flowmeter:

(1) Working principle: After the steam enters the throttle body of the flowmeter, part of it passes through the throttle orifice plate of the main pipe, and part of it passes through the diverter The tube flow passes through the nozzle and flows onto the impeller, forming a torque on the impeller, causing the impeller to drive the wheel shaft to rotate. The impeller speed is proportional to the flow rate, thereby measuring the steam flow rate.

(2) Features: It has a unique split flow structure and is suitable for steam flow measurement under specific working conditions.

4. Ultrasonic flowmeter:

Ultrasonic flowmeter has the advantages of non-contact, wide measurement range and high accuracy. Qingdao Hesheng Measurement and Control HSC series ultrasonic flowmeter has its own heat accumulation function. It is equipped with a pair of platinum resistors and uses the international standard enthalpy value heat calculation formula (enthalpy difference method) to achieve the measurement of cold/heat. In order to meet the needs of different users According to the on-site needs of working conditions, this series of products is divided into integrated, split modular and battery-powered types. It is suitable for cooling/heat measurement of air conditioners and heat measurement of unit buildings, heat exchange stations and heating company pipe networks.

5. Magnetic flow meter:

Based on the principle of electromagnetic induction, the flow rate is calculated by measuring the electromotive force generated by the fluid cutting magnetic lines. It is suitable for conductive liquids.Measurement.

6. Mass flow meter:

Directly measures the mass flow of the fluid passing through the flow meter. It is not affected by changes in fluid temperature, pressure, density and other parameters. It has high precision and high Stability and other advantages.

When choosing a steam flow meter, you need to consider a variety of factors. Different types of steam flow meters have their own advantages, disadvantages and scope of application, and they need to be selected according to specific application scenarios and needs. Qingdao Hesheng Measurement and Control can provide a complete set of comprehensive energy management system solutions from instruments to systems, and can quickly respond to customer needs. For more instrumentation issues, please feel free to consult Hesheng Measurement and Control~