A compressor flow regulation system based on clearance regulation

Abstract

The invention discloses a compressor flow regulation system based on clearance regulation. The compressor flow regulation system based on clearance regulation is characterized in that a flow regulation device is mounted on a compressor cylinder, an executive motor is used for controlling and regulating the volume change of the cylinder, the size of the clearance volume of the compressor cylinder is changed, the flow of the compressor is regulated, and the power consumption of the compressor under partial load is reduced. According to the executive mode of the system, a monitoring system is arranged according to the requirements of system flow, the monitoring system controls the executive motor to work, the executive motor drives a regulating piston to move, the clearance volume of the compressor cylinder is changed automatically according to control requirements, and the automatic stepless regulation of compressor flow is achieved.

Description

technical field [0001] The invention belongs to the technical field of compressors, and in particular relates to a compressor flow regulation system based on clearance regulation. Background technique [0002] Compressor is an important energy-consuming equipment in petroleum, chemical, metallurgy and other industrial fields. The process often requires it to work under partial load and flow adjustment is required. [0003] There are many ways to adjust the flow rate of reciprocating compressors. One is to use part of the stroke to open the intake valve to adjust the flow rate. For example, in US5833209 and US7331767 patents, hydraulic pressure and gas force are used to press and open the intake valve under part of the stroke. The stepless adjustment of the flow rate of the compressor is realized, but the device has extremely high requirements on the reliability and life of the solenoid valve. Patents CN201232620 and CN101270741 use a hydraulic distributor instead of a solen...

AI Technical Summary

Problems solved by technology

Patents CN201232620 and CN101270741 use hydraulic distributors instead of solenoid valves, but precise control of hydraulic distributor action increases the complexity of the system

The other is to use the additional clearance volume to adjust the flow rate, such as the US4775299 patent, which uses the hydraulic pressure to control the position of the clearance volume cylinder piston to realize the change of the additional clearance volume to adjust the flow rate of the compressor. US6641371 and CN201225264Y patents use servo reversing valves and The control mechanism adjusts the flow direction of the hydraulic oil, and controls the movement of the hydraulic servo piston and the piston of the clearance volume cylinder through the differential pressure to realize the adjustment of the clearance volume. The driving force of this method is provided by the hydraulic pressure, and it is necessary to increase the hydraulic station and the hydraulic oil servo reversing device, complex system structure

Images