Isothermal compressor performance test calculation method

Abstract

The invention provides an isothermal compressor performance test calculation method. The method comprises the steps that step 1, parameters of an isothermal compressor are collected; step 2, multivariable numbers in a calculation process are preliminarily determined, specifically, in step 201, inlet and outlet pressure and temperature parameters of all stages of the design modal are obtained, in step 202, the multivariable numbers of all stages of the design modal are calculated, in step 203, the multivariable numbers of all stages of the test modal are preliminarily determined, specifically,the multivariable numbers of all stages of the test modal are made to be equal to the multivariable numbers of all stages of the design modal; step 3, test data are preliminarily calculated; step 4, data comparison and correlation coefficient selection iterative calculation are performed, specifically, the complete machine power N calculated in the step 3 is compared with the actually measured power N, a correlation power adjustment coefficient is calculated, the multivariable numbers of all stages are recomputed, specifically, the multivariable numbers of all stages of the test modal are re-determined, the multivariable numbers of all stages of the test modal are made to be equal to the multivariable numbers of all stages obtained by re-calculation, and the calculations in the step 3 andthe step 4 are repeatedly iterated; and step 5, correlation property parameters are calculated.

Description

technical field [0001] The invention belongs to the field of compressors, and relates to an isothermal compressor, in particular to a performance test and calculation method of an isothermal compressor. Background technique [0002] Isothermal compressors with built-in coolers are widely used in industrial fields such as air separation. The built-in cooler makes the high-temperature gas compressed in each stage cool down nearby in time before entering the next stage for compression again. The overall energy consumption of the unit is lower than other types of compressor units of the same scale, and the overall floor area is also smaller than other types of compressor units of the same scale. However, the application of the built-in cooler, especially in order to ensure that the high-temperature gas can be fully cooled, adopts a unique gas distributor for air distribution, so that the high-temperature air flow at the front stage outlet of the built-in cooler and the low-temp...

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a method for testing and calculating the performance of an isothermal compressor, aiming at the testing difficulties brought about by the structure characteristics of an isothermal compressor, and solving the problems in the prior art for the structure of an isothermal compressor. characteristics, it is difficult to give accurate quantitative test results technical problems

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