Teach you how to calculate the Y filter resistance loss

Release time:

2024-04-07

Y-type filter is an indispensable device on the transmission medium pipeline. It is usually installed at the inlet end of a pressure reducing valve, a pressure relief valve, a water level valve or other equipment to eliminate impurities in the medium to protect the valve and equipment Normal use. The selection of Y-type filter usually involves the calculation of filter resistance loss, so how is the resistance loss of Y-type filter calculated?
For Y-type and other pipe fittings filters, the following formula can be used to calculate:
Relationship between nominal diameter of Y-type filter and length of equivalent straight pipe section
ΔP-resistance loss, Pa
λ-coefficient of friction, dimentionless
Re-Reynolds number, Re =(ω · dn)/u, dimenless
ω-fluid velocity, m/s
ρ-fluid density, kg/m³
μ-dynamic viscosity, kg/m · s
u-Kinematic viscosity u = μ/ρ,m²/s
L-length of equivalent straight pipe section, mm. For the type of pipe fitting filter, refer to the following table "Relationship between nominal diameter of type of pipe fitting filter and length of equivalent straight pipe section"
Inner diameter of D-type pipe fitting filter, mm
dn-Equivalent diameter, mm, pipe inner diameter 'D' for pipe-like filter, 4S/c for shell-and-shell filter
S-liquid flow area, m²
C- Liquid Wet Perimeter (Wet Perimeter)
C = 2X (cylinder inner diameter + cylinder height),m
Μ-Entrance block coefficient, take 1.1
Μ-Exit blocking coefficient, Tori 0.5