Stepless energy regulation method and device of screw compressor and screw compressor

Abstract

The invention relates to a stepless energy regulation method and device of a screw compressor and the screw compressor. The stepless energy regulation method comprises the steps that a slide valve load of the screw compressor is divided into load intervals of a preset number, and each load interval comprises an energy regulating interval and an energy maintaining interval, wherein energy of the energy maintaining interval is a preset value; in the process of energy loading or energy unloading, according to loading / unloading cycle default values and loading / unloading time default values under the actual working condition and the standard working condition of the compressor, actual loading / unloading cycles and actual loading / unloading time of each energy regulating interval and each energy maintaining interval are updated; and according to the actual loading / unloading cycles and the actual loading / unloading time of each energy regulating interval and each energy maintaining interval, the energy is regulated. Energy fine regulation is achieved, the energy efficiency of a machine set can be optimal rapidly, and the phenomenon of a low-pressure failure because of the failure, caused by a large load span and a sharp jump of the energy intervals, of timely refrigerant flow regulation is avoided.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a stepless energy adjustment method and device of a screw compressor and the screw compressor. Background technique [0002] The current screw unit adopts stepped energy regulation or stepless energy regulation. The stepped energy regulation method is too rough to meet the increasingly fine energy regulation, and the energy regulation method can not achieve the optimal energy efficiency of the screw unit. Waste of energy; Due to the manufacturing process or design problems of the stepless energy regulation units on the market, after a certain period of operation, the stepless energy regulation changes are no longer fine, and the slide valve of the screw compressor can no longer change slowly. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a stepless energy adjustment method and device for a screw compressor and a...

AI Technical Summary

Problems solved by technology

Solve the problems of rough energy adjustment methods under various working conditions, imprecise energy adjustment, and unoptimized energy efficiency of the unit; through self-adaptive adjustment in each load range, the self-adaptive adjustment of the loading cycle of the loading valve, and the loading cycle of the sliding valve under different working conditions Self-adaptive adjustment, and multiple energy platforms are set up to solve the uncertainty of the position of the energy slide valve through the energy platform, and solve the problem of low pressure reported by the screw unit under specific working conditions

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