Spiral vortex gas flowmeter

Introduction: Spiral vortex flowmeter Overview: Spiral vortex flowmeter is a gas flow meter developed and researched by our company. This flowmeter integrates flow rate, temperature, and pressure detection functions, and can automatically compensate for temperature, pressure, and compression factor. It is used in petroleum, chemical, and other industries

Overview of Spiral Vortex Flow Meter:

Spiral vortex flowmeter is a gas flow meter developed and researched by our company. This flowmeter integrates flow rate, temperature, and pressure detection functions, and can automatically compensate for temperature, pressure, and compression factor,

It is a meter used for gas measurement in industries such as petroleum, chemical, power, metallurgy, etc.

Characteristics of Spiral Vortex Flow Meter:

No mechanical movable parts, not easily corroded, stable and reliable, long service life, long-term operation without special maintenance;

Using 16 bit computer chips, with high integration, small size, performance, and overall functionality;

The intelligent flowmeter integrates a flow probe, microprocessor, pressure, and temperature sensors, and adopts a built-in combination to make the structure more compact. It can directly measure the flow rate, pressure, and temperature of fluids, and can

Real time tracking compensation and compression factor correction;

The use of dual detection technology can effectively improve the strength of detection signals and suppress interference caused by pipeline vibration;

Adopting seismic technology effectively suppresses interference signals caused by vibration and pressure fluctuations;

Adopting a Chinese character dot matrix display screen with multiple digits for intuitive and convenient reading, it can directly display the volumetric flow rate under working conditions, volumetric flow rate under standard conditions, total amount, as well as medium pressure and temperature

Waiting for parameters;

Using EEPROM technology, parameter settings are convenient, can be saved, and historical data up to one year can be saved;

The converter can output frequency pulses, 4-20mA analog signals, and has an RS485 interface, which can be directly connected to a microcomputer for a transmission distance of up to 1.2km;

Multiple physical parameter alarm output, which can be selected by the user as one of them;

The flowmeter head can rotate 360 degrees, making installation and use simple and convenient;

In conjunction with our company's FM type data collector, remote data transmission can be achieved through the internet or telephone network

Pressure and temperature signals are sensor inputs with strong interchangeability;

The whole machine has low power consumption and can be powered by internal batteries or external power sources.

Principle of Spiral Vortex Flow Meter

The flow integrator consists of temperature and pressure detection simulation channels, flow sensor channels, and microprocessor units, and is equipped with external output signal interfaces to output various signals. The microprocessor in the flowmeter

Perform temperature and pressure compensation according to the gas equation, and automatically correct the compression factor. The gas equation is as follows:

In the formula: QN ——Volume flow rate under standard conditions (m3/h);

QV ——Volume flow rate under operating conditions (m3/h);

Pa ——Local atmospheric pressure (KPa);

P ——The gauge pressure measured by the pressure tapping hole of the flowmeter (KPa);

PN ——Atmospheric pressure under standard conditions (101.325 KPa);

TN ——Temperature under standard conditions (293.15K);

T ——Temperature of the fluid being tested (K);

ZN ——The compression coefficient of gas under standard conditions;

Z ——The compression coefficient of gas under working conditions;

Note: When calibrating with a bell jar or negative pressure, take ZN/Z=1, and for natural gas (ZN/Z), 1/2=FZ is the over compression factor. Calculate according to the formula in the standard SY/T6143-1996 of China National Petroleum Corporation

Technical parameters of spiral vortex flowmeter

Nominal diameter DN (mm)	Type	flow range (m3/h)	Work pressure (MPa)	accuracy class	repetitiveness
20		1.2～15	1.6; 2.5; 4.0; 6.3	1.0 1.5	Less than one-third of the basic error limit * value
25		2.5～30
32		4.5～60
50	Type B	10~150
80	Type B	28~400
100	Type B	50~800
150	Type B	150~2250
200		360~3600	1.6; 2.5; 4.0