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

A motor closed-type, energy-adjusting technology, applied in servo motors, servo motor components, fluid pressure actuators, etc., can solve problems such as poor low-speed performance

Inactive Publication Date: 2008-06-18
ZHEJIANG UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

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

Method used

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

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with drawings and embodiments.

[0020] As shown in Figure 1, the present invention includes a frequency converter, a motor, a hydraulic pump, a safety valve group, an oil replenishment module and a hydraulic motor; The module and the hydraulic motor, the hydraulic motor is connected with the load; it is characterized in that: the energy regulator is bridged between the main circuit between the oil supply module and the hydraulic pump, and the upper and lower main circuits between the safety valve group and the oil supply module are connected respectively The flow control valve is connected to the upper and lower main circuits between the energy regulator and the hydraulic motor respectively.

[0021] As shown in Fig. 1 and Fig. 2, the safety valve group is composed of two electromagnetic overflow valves 5.1 and 5.2 connected in series. The two liquid flow directional control valves: have the same str...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/08F15B13/02
Inventor 金波许明俞亚新
Owner ZHEJIANG UNIV
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