Liquid Viscous Soft Start Test Device Of The Design

Liquid viscous soft start (hereinafter referred to as liquid viscous soft start) is a kind of transfer power through the oil film shear mechanical and electrical integration of liquid transmission device, the device can not only achieve motor no-load start, reduce the impact on the mechanical and power grid, and can realize stepless speed regulation, and save energy. Based on the many advantages of liquid viscous soft start, it is widely used in modern industrial environment, to continuous innovation and upgrading and the technical improvement, the liquid viscosity soft start experiment was designed in this paper, we study device, can for the development of new high performance liquid viscous soft start provide reliable test method and data.This paper analyzes the basic principle of liquid viscous transmission, i.e.,Newton’s laws of internal friction and the working state of the fluid viscosity transmission, deduced the calculation formula of the liquid viscosity soft start transmission torque. A liquid viscosity transmission lubrication theory is that meet the liquid viscosity soft start forming oil film under various working conditions to meet the required flow of lubrication and oil inlet pressure calculation formula,provide theoretical basis for the design of the experimental device of the hydraulic system, and analyzes the liquid friction area of oil film force and the calculation formulas. Analyzes the liquid viscosity soft start in the process of starting and speed regulation on friction heat production, deduced the calculation formula of friction surface temperature and flash point temperature, choose appropriate friction piece of advice are put forward. Selected the 125 liquid viscous soft start as test object of test apparatus, test device of mechanical structure was designed, and expounds the working principle of test rig. Design of the main components of the test device of respectively. Analyzes the friction pair in the liquid viscosity soft start material,structure, and provides reference for selecting excellent combination of friction pair.Design the test unit pressure fluid system structure, and illustrates the working principle of hydraulic system in detail. Will be applied to the hydraulic control system of frequency conversion technology, analyzes the principle of frequency conversion adjustment control hydraulic and control frequency is presented, the corresponding relationship between control of hydraulic control frequency range is determined, and analyzes problems existing in the variable frequency control system and gives corresponding solutions. Analysis to select the main components in the hydraulic system. Design electrical control system basic composition, the test device and electric control schematic diagram is presented. To test device of automatic test liquid viscous soft start no-load start-up and load control software is designed for two process as an example. Analysis to choose the main components and sensors used in the electric control system. Test device for the related performance testing, liquid viscous soft start is obtained by analysis of test data comply with the design requirements, and to test the performance and optimize the liquid viscosity soft start more reliable test conditions.