Triangle weir flow calculation formula | Triangle weir flow calculation formula

『Calculation formula for triangular weir flow』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)

1. Design and Calculation of Measurement Triangle Weir

Design and Calculation of Measurement Triangle Weir: Firstly, calculate based on known conditions: sewage treatment scale of the sewage plant: $Q=5000 (m ^ 3/day) $Comprehensive coefficient of variation: $Kz=1.73 $Triangle Weir angle: $theta=90 (deg) $Calculate the maximum hourly flow rate:$ Q_{max} = dfrac{Q times K_z}{86400} = dfrac{5000 times 1.73}{86400} = 0.100(m^3/s)$ Next, design calculations will be carried out:

1. The maximum size of each part of the triangular weir is the water head on the large weir$ H_1 = {{(dfrac{Q_{max}}{1.43})}^{dfrac{2}{5}}} = {{(dfrac{0.100}{1.43})}^{dfrac{2}{5}}} = 0.35(m)$ Taking the super height of the triangular weir: $H_1 "=0.15 (m) $Triangle weir height: $H2=H_1+H_1"=0.35+0.15=0.50 (m) $Triangle weir upper mouth width: $B1=2 times H2=2 times 0.50=1.00 (m) $

2. Downstream channel taking the downstream channel width: $B3=1.2 (m) $Downstream channel flow velocity: $upsilon3=0.5 (m/s) $Downstream channel water depth:$ H_3 = dfrac{Q_{max}}{(B_3 times upsilon_3)} = dfrac{0.100}{(1.2 times 0.5)} = 0.17(m)$ Upstream channel superelevation: $H "=0.15 (m) $Downstream below the bottom point of the triangular weir: $H" "=0.1 (m) $Total channel height: $H=H1+H3+H"+H ""=0.35+0.17+0.15+0.1=0.77 (m) $Downstream channel length: $L_1=4 times B1=4 times 1.00

III. Upstream channel width: $B2=1.2 (m) $Upstream channel water depth: $H2=H-H "=0.77-0.15=0.62 (m) $Upstream channel flow velocity:$ upsilon_1 = dfrac{Q_{max}}{(B_2 times H_2)} = dfrac{0.100}{(1.2 times 0.62)} = 0.13(m/s)$ In summary, the design calculation of the measuring triangle weir has been completed, and the dimensions and flow velocity parameters of each part have been carefully determined. In practical applications, factors such as material selection and construction accuracy need to be considered to ensure the stability and accuracy of the measuring triangle weir. (Note: This figure is an example of a calculation software interface, and different software or methods may be used in actual design calculations.)

2. Doppler river flowmeter

3. Calculation formula for triangular weir flow

The calculation formula for triangular weir flow is: its carrier: qv: fluid flow through the triangular weir g: gravitational acceleration h: upstream water level θ: the top angle of the triangular field hidden front. A triangular weir refers to a thin-walled weir with an isosceles triangle shaped mouth, as shown in the figure above. In practical engineering, the empirical formula for the flow rate of a triangular weir is

1.343h ^ 2.47. The flow rate of the triangular weir can also be obtained by checking the table.

『SILVER Official Website SERVICE』