Wing type wind measurement device

Wing type wind measurement deviceIt is a specialized equipment used to measure boiler air volume, which can be directly installed on the inlet of the air supply fan and the cold and hot air ducts between the air supply fan and the burner.
The wing type wind measurement device is suitable for conditions such as high air flow rate, large cross-sectional area, low flow velocity, and short length of straight pipe in the boiler air duct of power plants. It has the characteristics of large differential pressure signal, small pressure loss, stable performance, simple structure, and easy maintenance.

Scope of Application
1. nominal diameter: circular pipeline: 500mm ≤ DN ≤ 3500mm
Rectangular pipeline: 500mm × 500mm ≤ DN ≤ 3500mm × 3500mm
2. Nominal pressure: PN ≤ 1MPa
3. Medium temperature: t ≤ 400 ℃
4. Reynolds number range: ReD>2.5 × 105
5. Accuracy level: Level 1, Level 1.5, Level 2

structural form
The wing type wind measurement device consists of a wing installed in the air duct, a pressure tube, and a section of air duct. The streamlined wing surface of the wing is divided into four sections on each side, with three sections being arc-shaped plates with different curvature radii and the fourth section being a straight plate.
According to the principles of fluid mechanics, when the airflow in the air duct passes through the wing measuring device, it creates a flow around the wing surface and creates a pressure difference between point a and point b. The pressure at point a is the total pressure, while the pressure at point b decreases due to the contraction of the flow cross-section at that location, resulting in a pressure difference between point a and point b. This pressure difference is a function of the airflow velocity or flow rate Qv.
Qv=αA(2ΔP/ρ)1/2
Qv -- Volume flow rate m3/h
A - Pipeline cross-sectional area mm2
Δ P -- Differential pressure Pa
ρ --- Density Kg/m3
α - flow coefficient