I. V-Cone Flow Meter‌

The V-cone gear flow meter is a type of V-cone flow meter.

Overview‌

The ‌V-cone flow meter (V-cone flowmeter)‌ is a novel differential pressure flow meter. Compared with traditional differential pressure flow meters, it offers significant advantages:

High accuracy and excellent repeatability

Long-term stability and reliability

Low measurement下限 (lower limit) and wide flow range

Minimal straight-pipe requirements upstream/downstream

Low pressure loss, resulting in energy savings

Wear-resistant and resistant to dirty fluids

Long service life and broad applicability (e.g., viscous fluids, solids-laden fluids, high-temperature/pressure fluids)

Robust differential pressure element resistant to deformation

Design Principle (Gear Flow Meter with Dual Flanges)‌

The V-cone throttling device consists of a tapered cone coaxially installed in the pipe and corresponding pressure taps. The pipe is precision-machined, and the cone generates a differential pressure.

High pressure (positive pressure)‌: Measured at the upstream pipe wall before fluid contraction.

Low pressure (negative pressure)‌: Measured at the cone’s downstream-facing port (central axial tap).

The square root of the differential pressure is proportional to volumetric flow rate, enabling flow measurement.

Theoretical Basis‌

The measurement follows the ‌continuity equation (mass conservation)‌ and ‌Bernoulli’s equation (energy conservation)‌, with formulas identical to other differential pressure flow meters.

Key Features‌

High-precision, high-stability‌ differential pressure flow instrumentation.

Accurate measurement across all Reynolds numbers.

Flow conditioning‌: The sensor body reshapes fluid flow profiles.

Wide turndown ratio‌ and repeatability.

Minimal straight-pipe requirements‌ (no flow conditioners needed upstream).

Noise reduction‌: The cone dampens pressure pulsations in the differential pressure signal.

No moving parts‌, ensuring reliability and easy installation.

Low wear‌: The cone’s profile guides fluid away from the trailing edge, reducing erosion.

Low pressure loss‌, suitable for low-static-pressure applications.

Annular design‌: Ideal for dirty or slurry flows.

Applications‌

Measures:

Gas, liquid, multiphase flows

High-viscosity, high-velocity fluids

Dirty fluids (e.g., coke oven gas, wet gases)

Solids-laden liquids, vibrating flows, EMI-prone environments

II. Integrated V-Cone Flow Meter‌

Design‌

Combines advantages of ‌classic Venturi tubes‌ and ‌annular orifice plates‌, using conical throttling for flow measurement. Unlike traditional designs, it employs ‌annular throttling‌ instead of central orifice throttling.

Principles‌

Based on ‌Bernoulli’s equation‌ and ‌continuity equation‌, where flow velocity is proportional to the square root of differential pressure in steady flow.

Advantages‌

Stability, high accuracy, repeatability

Wide turndown ratio

Low installation requirements

Minimal pressure loss

Suitable for solids-laden/high-pressure fluids, wet gases, and dirty flows

Economic Significance‌

As a ‌secondary energy meter‌, it plays a critical role in industries like:

Petroleum, chemicals, light industry

Metallurgy, textiles, food, pharmaceuticals

District heating systems (large-pipeline steam measurement)

Variants‌

Later developments include V-cone flow meters for:

Thermal oil, engine oil, heavy oil, gear oil

Conclusion‌

For detailed specifications on ‌V-cone gear flow meters‌, contact Zanke’s technical team. Pricing varies based on customization and order volume.