Novel adjusting system for stationary blades of axial flow fan

Abstract

The invention provides a novel adjusting system for stationary blades of an axial flow fan. The system comprises a servo motor, a bidirectional quantitative gear pump and an oil tank, wherein the bidirectional quantitative gear pump is fixedly arranged in the oil tank and driven by the servo motor to rotate. The system further comprises two hydraulic cylinders, and adjusting oil cylinders which are correspondingly connected with the two hydraulic cylinders and used for adjusting the angles of the stationary blades; the bidirectional quantitative gear pump correspondingly communicates with the two hydraulic cylinders through two oil channels and supplies pressure oil to the two hydraulic cylinders; the hydraulic cylinders can drive the adjusting oil cylinders to adjust the angles of the stationary blades. The system provides position close-loop control and pressure close-loop control, so that the rotating speed of the servo motor and the position and pressure of a hydraulic system can be accurately controlled to meet various working requirements of the stationary blade adjusting system; the system can accurately adjust the angles of the stationary blades and has the advantages of saving energy, being environmentally friendly, and insensitive to oil pollution, and greatly reducing the capacity of a hydraulic device.

Description

technical field [0001] The invention relates to an AC servo hydraulic control system of an axial flow fan stator blade adjustment mechanism, in particular to a novel axial flow fan stator blade adjustment system. Background technique [0002] Axial fan is a kind of mechanical equipment that provides compressed gas to equipment. At present, it is mainly used in catalytic cracking units of oil refineries, blast furnace blower stations in metallurgical industry, blast furnace gas combined cycle power generation systems, compressor stations in fermentation industry, and large air compressor stations. points, wind tunnel tests, etc. Axial flow fans need to adjust the air intake according to the technological requirements of the equipment, and the key to adjusting the air intake is to adjust the angle of the fan's stator blades. At present, the stator blade adjustment system of axial flow fan mostly adopts a valve-controlled position control system composed of three-phase asynchr...

AI Technical Summary

Problems solved by technology

However, the current valve control system has the following shortcomings: the servo valve has high requirements on the quality of the oil, and the system needs to replace the hydraulic oil regularly. If it is not maintained in time, the valve core of the servo valve will be stuck, the system will not work, and the production line will be shut down. Bad consequences; the working efficien

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