Variable frequency pump-control-motor closed circuit based on energy regulation

Abstract

The invention discloses a closed loop of a variable frequency pump-control motor, which is based on the energy regulating. The invention includes an inverter, a motor, a hydraulic pump, a safety valve group, an oil supplementing module and a hydraulic motor. The inverter drives the motor which drives the hydraulic pump. The safety valve group, the oil supplementing module and the hydraulic motor are connected astride in the closed circuit. An energy regulator is connected astride in the main circuit between the oil supplementing module and the hydraulic motor. A flow direction control valve is respectively arranged in the upper main circuit and the lower main circuit between the safety valve bank and the oil supplementing module. A flow control valve is respectively arranged in the upper main circuit and the lower main circuit between the energy regulator and the hydraulic motor. Based on the energy regulating, the energy regulator and throttle control are added to the traditional closed circuit of the pump-control motor, which speeds up the booster response of the system greatly. The invention has good energy saving effect.

Description

technical field [0001] The invention relates to a closed loop of a pump-controlled motor, in particular to a closed loop of a variable-frequency pump-controlled motor based on energy regulation. Background technique [0002] my country, as a big developing country, with the rapid economic growth, the energy consumption has increased sharply, and most of the energy we consume now is coal, oil, natural gas and other disposable energy. With the increase of consumption, natural resources increasingly depleted. It is imperative to implement energy-saving production methods and improve energy utilization and production efficiency. Energy conservation is the fundamental way to solve my country's energy problems. Hydraulic transmission is one of the important transmission methods in the industrial field. If the energy-saving efficiency of the hydraulic transmission system can be improved, the energy-saving efficiency of the entire industrial production field can be improved to a cer...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a closed circuit of frequency conversion pump-controlled motor based on energy regulation, on the one hand, improve the energy-saving efficiency of the pump-controlled motor system, on the other hand, improve its response speed and solve the problem of poor low-speed performance of the system, and broaden its application scope

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