Vortex Steam Flow Meter

Vortex Steam Flow Meter

The Steam Mass Vortex Steam Flow Meter are designed for accurate, cost effective mass flow measurement of saturated and overheated steam. The standard loop powered version of the vortex flow meter is equipped with the internal temperature compensation required for direct mass flow measurement. Each Steam Mass Vortex Steam Flow Meter is provided with a 4-20mA analog output for flow rate, a pulse output for totalization and a built-in user interface and display. The standard loop powered meter also includes HART. Optional versions are available with internal pressure compensation, multiple analog outputs an MODBUS serial communications.

The characteristics of vortex flowmeter in measuring superheated steam and saturated steam

ACE-LUGB series vortex street steam flowmeter is a kind of velocity flowmeter. When measuring gas or steam, it measures the volume flow under the working state. Therefore, if the mass flow provided by the customer is the mass flow, the mass flow provided by the customer should be converted into the volume flow under the working state when selecting the model, and then the path of the selected instrument should be determined by comparing with the volume flow parameter table of our vortex flowmeter.

1. Superheated steam

Steam is a special medium. Generally speaking, steam refers to superheated steam. Superheated steam is a common power source, which is often used to drive the turbine to rotate and then drive the generator or centrifugal compressor to work. Superheated steam is obtained by heating saturated steam, which contains no droplets or liquid mist, and belongs to the actual gas. The temperature and pressure parameters of superheated steam are two independent parameters, and their density should be determined by these two parameters. It can be found from the density table of superheated steam.

After a long-distance transmission, the superheated steam measured by vortex street steam flowmeter changes with the working conditions (such as temperature, pressure, etc.), especially in the case of low superheat, because of the decrease of heat loss temperature, it will enter the saturated state or supersaturated state from the superheated state, and become saturated steam or supersaturated steam with water drops. In addition, when the saturated steam suddenly depressurizes greatly, the liquid will change into superheated steam when it expands adiabatically, thus forming a vapor-liquid two-phase flow medium.

2. Saturated steam

The measurement of steam without overheating treatment by vortex flow meter is called saturated steam. It is a colorless, tasteless, non combustible and non corrosive gas. The content of droplets or mist in saturated steam reflects the quality of steam, which is generally expressed by the parameter of "dryness". Dryness of steam refers to the percentage of dry steam in saturated steam per unit volume.