德耐尔微油螺杆式压缩机：两级压缩工频-等温压缩相对省功DA+

两级压缩工频-微油螺杆式压缩机(30~400kw)
TWO STAGES COMPRESSING FIXED SPEED-OILINJECTED SCREW AIR COMPRESSOR

两级压缩空压机何以比单级压缩节能?
How could two stage compression compressors be more energysaving than single stage compressing ones?
根据压缩机的工作原理知道,等温压缩是相对省功的。右图为压缩过程的示功图,曲线12'3'为等温压缩过程,与纵坐标形成的面积613'4为等温压缩的指示功。曲线123"为一级压缩过程,与纵坐标形成的面积613"4为一级压缩的指示功。曲线12、22、27为两级压缩过程,与纵坐标形成的面积6125和52'34之和(6122'34)为两级压缩的指示功。由图示可以看出,等温压缩过程613'4面积(指示功)*小,但在压缩机实际压缩过程中无法做到等温压缩,一级压缩比等温压缩多出了13"3"面积的功率,而两级压缩则比一级压缩节省了2'23"3面积的功率。
According to the working principle of the compressor, isothermal compression is relatively energy-saving. The right figure is the indicator diagram of the compression process, the curve 12'3 'is the isothermal compression process, and the area 613 '4 formed with the ordinate is the indicator work of the isothermal compression. The curve 123 " is the primary compression process, and the area 613 " 4 formed with the ordinate is the indicator work of the primary compression. Curves 12,22 'and 2' 3 are two-stage compression processes, and the sum of the areas 6125 and 52 '34 formed by the ordinate (6122'34)is the indicative work of two-stage compression.lt can be seen from the figure that the 6l3 '4 area (indicating work)in the isothermal compression process is the smallest, but the isothermal compression cannot be achieved in the actual compressionprocess of the compressor. The first stage compression has 13 '3 " more power than the isothermal compression, while the two stage compression saves 2'23 " 3 area power than the first stage compression.