How to calculate the flow rate of the nozzle and how to calculate the injection speed of the nozzle

Flow rate Q = V (flow rate) Xs (nozzle orifice area).

The nozzle flow rate is expressed by q, q=k 10p.

P - the working pressure of the water mist sprinkler mPa.

k - the flow coefficient of the water mist nozzle, provided by the manufacturer.

Fire sprinkler pump and fire booster pump are determined according to the actual situation of use. The pump type is similar to that of the fire protection system, but the head and flow rate are different.

Fire pumps are mainly divided into vertical fire pumps and horizontal fire pumps, the flow rate of liquid is one of the important performance data of fire pump selection, and the flow rate of liquid is directly related to the production capacity of the whole device.

The formula is as follows: (kg - force) = liters, at the injection pressure) * [injection pressure, (kg square centimeter)] open root number.

The pressure should be calculated using Bernoulli's law, (p1 g) + (v1 2 2g) + z1 = (p2 g) + (v2 2 2g) + z2.

p is the pressure, is the density, g is the acceleration due to gravity, v is the velocity, z is the height, in this case z1=z2=0, g=.

The flow coefficient is the ratio of the flow rate of a particular nozzle to the standard flow rate. When determining the flow coefficient of a 1mm nozzle, we first need to know what the standard flow rate is, and then measure the amount of rubber leakage from the 1mm nozzle and divide them to get the flow coefficient of the 1mm nozzle.

For example, if the standard flow rate is 100 l min and the flow rate of a 1mm nozzle is 50 l min, then the flow coefficient of a 1mm nozzle is .

Hello, I am glad to serve you and give you the following answers: The calculation of air consumption of network nozzles is a relatively complex process, which needs to take into account a variety of factors, such as the model of the nozzle, pressure, flow rate, etc. Workaround:

1.According to the model of the nozzle, determine the pressure and flow rate of the nozzle; 2.Then, according to the pressure and flow rate of the nozzle, the air consumption of the nozzle is calculated; 3.

Finally, according to the air consumption of the nozzle, the air consumption of the network nozzle is calculated. Personal tip: When calculating the air consumption of a network nozzle, make sure that the pressure and flow rate of the nozzle are correct so that you can get the exact amount of air you consume.

In addition, it is necessary to pay attention to the maintenance of the nozzle to ensure the normal use of the nozzle.

Hello, I am glad to serve you and give you the following answers: network nozzle air consumption calculation refers to the calculation of the value of network nozzle gas consumption in the process of network nozzle equipment according to the characteristics of the nozzle and the structure of the nozzle, combined with the measurement of gas flow, aerodynamic calculation, gas physical property parameters, etc. The main problems that may arise in the calculation of air consumption of network nozzles are:

1.Nozzle structure problem: Due to the unreasonable nozzle structure and improper gas flow path, the nozzle air consumption calculation is inaccurate.

2.Inaccurate gas flow measurement: Due to the low accuracy of the gas flow measurement installed in the stove, the gas flow measurement is inaccurate, which affects the calculation result of nozzle gas consumption.

3.Inaccurate gas physical property parameters: Due to the inaccuracy of gas physical property parameters, the calculation results of nozzle gas consumption are inaccurate.

Workaround:1Optimized nozzle structure:

According to the characteristics of the nozzle and the gas flow path, the nozzle structure is reasonably designed to ensure that the air consumption of the nozzle is calculated accurately. 2.Improved gas flow measurement accuracy:

High-precision gas flow measurement devices are used to ensure accurate gas flow measurement. 3.Calibration gas early cleaning touch body physical parameters:

According to the characteristics of the gas, the physical parameters of the gas are determined to ensure that the nozzle gas consumption is calculated accurately. Bulu Talk: 1

Carry out the nozzle structure design, determine the characteristics of the nozzle and the gas flow path. 2.Choose a high-precision gas flow measurement device to measure the gas flow rate.

3.According to the characteristics of the gas, the physical parameters of the gas are determined. 4.

Combined with gas flow measurement,