Frequency-variable and energy-saving constant-oil-pressure automatic control system of fuel feed pump of fluid coupler

Abstract

The invention provides a frequency-variable and energy-saving constant-oil-pressure automatic control system of a fuel feed pump of a fluid coupler and belongs to the technical field of fluid couplers. Through the manner that a lubricating oil pump and an operating oil pump are respectively connected with a frequency conversion and speed control gear oil pump in parallel, the frequency-variable and energy-saving constant-oil-pressure automatic control system of the fuel feed pump of the fluid coupler solves the problems that the externally-arranged constant-speed running lubricating oil pump and the operating oil pump are high in energy consumption and the constant-oil-pressure oil mass can not be automatically controlled. The frequency conversion and speed control lubricating oil pump and the frequency conversion and speed control operating oil pump are additionally arranged outside the fluid coupler, wherein the lubricating oil pump and the operating oil pump are driven by an input shaft, and the frequency conversion and speed control lubricating oil pump and the frequency conversion and speed control operating oil pump are connected with the lubricating oil pump and the operating oil pump respectively in parallel to operate. When the fluid coupler is on an operating condition, the frequency conversion and speed control operation of the lubricating oil pump and the operating oil pump which are driven by the input shaft is achieved; the externally-arranged frequency conversion and speed control lubricating oil pump, the externally-arranged frequency conversion and speed control operating oil pump and a constant-oil-pressure frequency-variable automatic control system composed of a pressure transmitter and frequency converters are arranged, wherein the externally-arranged frequency conversion and speed control lubricating oil pump and the externally-arranged frequency conversion and speed control operating oil pump are connected with the lubricating oil pump and the operating oil pump in parallel respectively, and the lubricating oil pump and the operating oil pump are driven by the input shaft; the problems that energy consumption is high and the constant-oil-pressure oil mass can not be automatically controlled are solved.

Description

technical field [0001] The invention belongs to the technical field of fluid couplings. Background technique [0002] The main structure of the hydraulic coupling at home and abroad is the coupling box, the speed-increasing gear pair (the large gear meshes with the pinion), the lubricating oil pump and the working oil pump, the electric auxiliary lubricating oil pump, the pump theory, the turbine, the spoon tube, the speed regulating mechanism, Working oil system, lubricating oil system, oil tank, working oil cooler, lubricating oil cooler, etc. [0003] The input shaft of the hydraulic coupling at home and abroad and the lubricating oil pump and working oil pump driven by the input shaft through the gear or directly drive are all running at a constant speed. After the patented technical transformation of "industrial frequency conversion switching type hydraulic coupling" to the hydraulic coupling, the input shaft of the hydraulic coupling has the function of frequency conv...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high energy consumption of the external fixed-speed running lubricating oil pump and the working oil pump and the automatic control of constant oil pressure by connecting a set of variable frequency speed regulating gear oil pumps in parallel with the lubricating oil pump and the working oil pump respectively. Hydraulic coupling oil supply pump frequency conversion energy saving constant oil pressure automatic control system

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