Spiral Vortex Flowmeter With Wide Range Ratio And Strong
Anti-Interference Ability For Gases And Steam The spiral vortex flowmeter is a high-precision velocity-type flow
measurement instrument based on fluid dynamics principles. It
measures flow by detecting the swirl frequency generated when the
fluid passes through the helical guide vanes. Key Features - High Precision: Typical accuracy can reach ±0.5% to 1.5%, with
repeatability better than ±0.2%, suitable for trade settlement.
- Wide Range Ratio: The range ratio can reach 1:15 to 1:20, capable
of measuring flow velocities as low as 0.3 m/s.
- Strong Anti-interference Ability: Utilizes dual sensor technology
and digital filtering algorithms to effectively suppress pressure
fluctuations and mechanical vibration interference.
- Compact Structure, Relatively Easy Installation: Compared to
volumetric flowmeters of the same caliber, they are usually smaller
in size and weight.
- Integrated Temperature and Pressure Compensation, Direct Output of
Standard Volume: Can be equipped with built-in temperature and
pressure sensors to directly calculate volume flow or mass flow
under standard conditions, which is particularly important for gas
measurement.
Comparison with Volumetric Flowmeters | Characteristics | Spinning Vortex Flowmeter | Volumetric Flowmeter (Oval Gear/Wafer Gear/Twin Rotor) |
|---|
| Principle | Fluid vibration (vortex oscillation frequency) | Mechanical volumetric displacement (fixed volume counting) | | Internal Structure | No mechanical moving parts (only fixed blades and sensors) | Has precise mechanical moving parts (gears, rotors) | | Emphasized Advantages | High reliability, long service life, suitable for dirty gases | High accuracy, insensitive to viscosity, no need for straight pipe
sections | | Emphasized Disadvantages | Requires straight pipe sections, sensitive to vibration, medium to
high pressure loss | Prone to solid particles (can get stuck), high pressure loss,
mechanical wear | | Main Applications | Gases, steam | High viscosity liquids (such as crude oil, heavy oil) |
Typical application scenarios The helical vortex flowmeter is particularly suitable for the
measurement of gases and steam, and can also be used for the
measurement of some liquids. - Natural gas measurement: urban gas, station pressure regulating
boxes, industrial gas furnaces, etc., are its most classic and
widely used application fields.
- Industrial gases: compressed air, nitrogen, oxygen, carbon dioxide,
biogas, etc.
- Steam measurement: trade settlement and energy consumption
management of saturated steam and superheated steam.
- Petrochemical industry: various process gases, flare gas, etc.
- Liquid applications: it can be used for non-corrosive,
low-viscosity liquids such as tap water, but its application is not
as widespread as that for gases.
The helical vortex flowmeter is a robust and durable flow
measurement instrument based on fluid mechanics principles. It has
dominated the gas and steam metering fields due to its design
without moving parts, wide range ratio, and direct output of
frequency signals. Although it has certain requirements for
installation conditions (straight pipe sections) and pressure loss,
its high reliability and excellent overall performance make it a
very popular choice in industrial processes. |
