First,Work pressure, exhaust pressure selection:
When users ready to air compressor unit of choose and buy, the first thing to determine the working pressure of gas side need, add 1 to 2 bar allowance, then choose the pressure of the air compressor, (the allowance is considered from the air compressor installation location to the actual gas pipeline pressure loss of the distance, according to the length of the distance between 1-2 bar pressure due consideration allowance). of course, the size of the pipe size and how much is turning point of the factors affecting the pressure loss, the bigger the pipe size and the turning point is less, the smaller the pressure loss; Conversely, the greater the pressure loss.
Therefore, it's too far distance between the compressor and the gas side line, should be properly enlarge head the size of the road. If environmental conditions to meet the requirements of the installation of the compressor and the condition allows, can be installed on the gas side of things.
second, Volume flow selection:
(1) when choosing air compressor volume flow, should first understand all of the volumetric flow rate of gas equipment, the total number of the traffic multiplied by 1.2 (i.e., enlarge 20% allowance);
(2) the new project according to the design institute for selection of flow value;
(3) ask the gas equipment suppliers the selection of gas volume flow parameters of the equipment;
(4) air compressor station reconstruction may refer to the original parameter value selection in combination with the actual gas;
Users themselves on the appropriate selection, and for all air compressor equipment, selection of too much waste, selection is too small may cause air compressor in a loading state for a long time or not enough gas or pressure dozen don't go up, etc.
third,Power and the relationship between the pressure and volume flow
In the case of power is constant, when the speed change, volume flow rate and pressure of work also change accordingly; For example: a 22 kw air compressor, determine the working pressure of 7 bar during manufacturing, technology curve calculation according to the compressor speed, displacement of 3.8 m3 / min; When determine the working pressure of 8 bar, speed must be reduced (or drive electrical overload - at this time, the displacement of 3.6 m3 / min; Because, speed decreased, exhaust also reduced accordingly, and so on.
Power selection is under the condition of meet the work pressure and volume flow rate, power supply capacity can meet the matching the use of the drive motor power.
Matching air compressor, therefore, the steps are: first to determine the working pressure, and then set the corresponding volume flow, finally, the power supply capacity.
Fourth， to consider the safety of the compressor operation. Air compressor is a kind of machine with work pressure, with temperature and pressure at work, the safety of its operation to in the first place. The state shall implement a compressor production standardization of "two card" system, namely the compressor production license and pressure vessel manufacturing license (reservoir). Therefore, when the compressor products of choose and buy, want to strict censorship "two card". Usually has the factory product quality assurance system is perfect, won't appear the quality problem of the large, even if some problem, also the manufacturer shall be responsible for 3 packets.
welcome to Denair for air compressor quotation.Denair Group to make product development and large-scale production,including piston air compressors,double screw air compressors,Diesel Portable Air compressors,High and Medium Pressure Air Compressors,Oil-free Air Compressors and compressed air treatment equipment.
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