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Automatic control system of hydraulic pump station

A technology of automatic control system and hydraulic pump station, which is applied in the direction of electric fluid pressure control, etc., can solve the problem that the working oil pressure cannot be accurately controlled, and achieve the effect of easy operation.

Inactive Publication Date: 2009-05-20
SHENYANG SCI INSTR RES CENT CHINESE ACAD OF SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiency that the existing hydraulic pump station control system cannot accurately control the working oil pressure, the present invention provides an automatic control system for the hydraulic pump station. Action control, and can realize precise control of working oil pressure

Method used

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  • Automatic control system of hydraulic pump station
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Embodiment

[0017] Embodiment: The present invention comprises programmable logic controller PLC, frequency converter VVVF and pressure sensor 1, and frequency converter VVVF is connected at the front end of the hydraulic motor M that drives motion mechanism movement, is used for adjusting the operating frequency of motor M, when hydraulic motor M speed occurs change, the oil pressure in the oil pipe also changes; the pressure sensor 1 is installed on the oil pipe, the frequency converter VVVF and the pressure sensor 1 are electrically connected to the programmable controller PLC respectively, and the oil pressure is transmitted to the programmable controller through the pressure sensor 1 PLC. Various controls are realized through the programmable controller PLC program. As shown in Figure 1. A touch screen TP as a man-machine communication interface is connected to the programmable controller PLC. The model of the programmable controller PLC in this example is EC10.

[0018] The PLC i...

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Abstract

The invention relates to an automatic control system for a hydraulic pumping station, which belongs to the technical field of an automatic control system for the hydraulic pumping station. The automatic control system for the hydraulic pumping station comprises a programmable controller PLC, a frequency converter which is connected to the front end of a hydraulic motor which drives a motion mechanism to move, and a pressure sensor which is arranged on an oil pipe, wherein the frequency converter and the pressure sensor are electrically connected with the programmable controller PLC respectively, and various controls are realized through programs of the programmable controller PLC. The automatic control system for the hydraulic pumping station has the advantages that a signal is transmitted to the PLC by the pressure sensor, and the working frequency of the frequency converter and the motor is controlled in real time by the PLC control program; the working pressure of dynamic oil of the hydraulic pumping station can be automatically and precisely controlled; a touch screen which is used as a man-computer interactive interface can be connected to the PLC, and the working pressure can be conveniently set on the touch screen; and the operation is simple and convenient, and the control precision is within 3 percent. The automatic control system for the hydraulic pumping station is not only suitable for various hydraulic machines of which main frames and hydraulic devices are detachable but also suitable for various hydraulic machines of which the main frames and the hydraulic devices are integrated into a whole.

Description

technical field [0001] The invention relates to an electrical control system for automatically controlling the operation of a hydraulic pump station, in particular to an automatic control system for a hydraulic pump station capable of precisely controlling oil pressure. Background technique [0002] At present, the power hydraulic station in the hydraulic system, where the actuators and their control valves are bulk-packed at various appropriate positions, has a relatively simple form. It is mainly composed of a hydraulic pump and a drive motor, a fuel tank and its accessories, and a few necessary pressure control valves. And other components, so it is often called a hydraulic pump station. Its main function is to provide oil with a certain pressure and flow for the hydraulic actuator, and the control of the system is mainly performed by the control valves scattered around the main engine. The hydraulic pump station we usually refer to generally refers to a small hydraulic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D16/20
Inventor 张宁戚辉李树达
Owner SHENYANG SCI INSTR RES CENT CHINESE ACAD OF SCI
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