To calculate the air consumption of each station of the air compressor, it is necessary to consider a number of factors and adopt a certain calculation method. Here are some common methods and steps:
1. determination of basic parameters
- working pressure: The pressure value reached when the air compressor outputs gas.
- Flow: The volume of gas passing through the air compressor per unit time.
- Type of gas: Different gases have different density and compression characteristics, so the type of gas is also an important factor affecting gas consumption.
2. select the appropriate calculation formula
according to the specific needs and known conditions, one of the following formulas can be selected to calculate the gas consumption:
- formula I: Gas consumption = (pressure loss of pressure pipeline required for work, pressure margin of air compressor) × flow rate. Among them, the pressure required for work is determined according to the actual process requirements, the pipeline pressure loss considers the pressure drop of the gas during transportation, and the pressure margin of the air compressor is to ensure that the air compressor has a certain pressure reserve when working stably.
- Formula II: Gas consumption = (working pressure × flow) / (gas density × compression ratio). The compression ratio reflects the volume change of the gas during the compression process.
- Formula III: For some specific scenarios, such as network machines in the chemical fiber textile industry, the empirical formula Q = 9.11d ²(P 1) can be used to calculate the injection volume of the nozzle (that is, the air supply volume of the air compressor). where d is the nozzle diameter (mm) and p is the gauge pressure (bar).
3. consideration of influencing factors
in the calculation process, it is also necessary to consider some factors that may affect the gas consumption:
- air leakage: Possible air leakage in the system will increase the actual air consumption.
- Fluctuation of gas consumption of gas-using equipment: The gas consumption of different equipment or the same equipment under different working conditions may fluctuate.
- Spare capacity and redundancy design: For production lines that require continuous and stable air supply, the spare capacity and redundant design of the air compressor also need to be considered.
Practical Application and Correction of 4.
- Test and Validation: After calculating the theoretical gas consumption, its accuracy can be verified through actual tests, and necessary corrections can be made according to the test results.
- Optimized use: In order to save gas costs, the use of air compressors can be optimized, such as reasonable arrangement of working hours, reducing air leakage, etc.
5. example calculations
assuming a network machine station in the chemical fiber textile industry, using 1.2mm nozzles, under the light net process (pressure is 1.2bar), according to the empirical formula Q = 9.11d (P 1), the gas supply volume is about 6.93m & sup3;/min. This is the theoretical gas consumption of the station under certain conditions.
In summary, the calculation of the air consumption of each station of the air compressor needs to clarify the work requirements, select the appropriate calculation formula and consider the influencing factors. Through reasonable calculation and optimization of use, it can ensure that the air supply of the air compressor meets the production demand and reduces the gas cost.
