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Hydraulic system control method and apparatus for fuel charger

A technology of hydraulic system and control method, which is applied in the direction of AC motor control, fluid pressure actuating device, fluid pressure actuating system components, etc. problems, to achieve the effect of reducing labor intensity, reducing the incidence of mechanical failures, and improving energy utilization

Active Publication Date: 2012-08-01
TOKHEIM HENGSHAN TECH GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the existing refueling method, from the moment the refueling gun is lifted, the volumetric pump runs at full speed until the end of the whole refueling process, which causes a waste of power source, and when it is necessary to reduce the refueling flow, it can only be reduced by reducing the flow path Aperture, that is, to achieve the purpose of reducing the flow rate by setting additional resistance, not only increases the impact and wear of the liquid on the positive displacement pump, but also shortens the service life of the positive displacement pump, which is very unfavorable for energy saving and consumption reduction. Optimal control of the operating conditions, so that the entire fuel dispenser system can reduce energy waste, reduce the internal pressure of the entire pumping system, reduce mechanical wear, and reduce noise

Method used

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  • Hydraulic system control method and apparatus for fuel charger
  • Hydraulic system control method and apparatus for fuel charger
  • Hydraulic system control method and apparatus for fuel charger

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Embodiment 1

[0040] A structural block diagram of the device for realizing the fuel dispenser hydraulic system control method of the present invention is as follows: figure 2 As shown, including motor, positive displacement pump, oil and gas separator, electric control valve, flow measurement transducer, encoder, control board with counter, indicating device, voltage control device, manual input system, frequency converter, oil sight and oil The oil storage tank is connected with the positive displacement pump, the oil-gas separator, the electric control valve, the flow measurement transducer, the oil sight device and the oil gun in sequence; the oil storage tank is also connected with the flow measurement transducer, the encoder, the control board with the counter and The indicating devices are connected sequentially, the output of the manual input system is connected to the input of the voltage control device; the output of the control board with a counter is respectively connected to th...

Embodiment 2

[0045] Another structural block diagram of the device for realizing the fuel dispenser hydraulic system control method of the present invention is as follows: image 3 As shown, including motor, positive displacement pump, oil and gas separator, electric control valve, flow measurement transducer, encoder, control board with counter, indicating device, voltage control device, manual input system, frequency converter, oil sight, oil Gun and liquid level gauge, the oil storage tank is connected in turn with the positive displacement pump, oil-gas separator, electric control valve, flow measurement transducer, oil sight device and oil gun; the oil storage tank is also connected with the flow measurement transducer, encoder, belt counter The control board and the indicating device are connected in sequence, the output of the manual input system is connected to the input of the voltage control device; the output of the control board with a counter is respectively connected to the in...

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PUM

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Abstract

The invention relates to a control method of the hydraulic system of a fuel tanker, which controls a motor driving a positive displacement pump in the hydraulic system by controlling operating frequency and comprises the steps of a detection stage: detecting an input voltage signal; an operating stage: operating according to preset frequency corresponding to the voltage signal when the detection result shows that one input voltage signal exists, and operating according to the preset frequency corresponding to the input voltage signal with high priority level when the detection result shows that two input voltage signals exist. The method and the device realizing the method realize the rotating speed regulation of the positive displacement pump by changing the rotating speed of the motor driving the positive displacement pump through continuously changing the power frequency, thus leading the fuel tanker to operate in a best working condition, improving the energy utilization rate and reducing the energy loss.

Description

technical field [0001] The invention relates to a method and device for controlling refueling of a fuel dispenser, in particular to a method and device for frequency conversion control of a hydraulic system of a fuel dispenser. Background technique [0002] A fuel dispenser is generally a complete liquid delivery system consisting of motors, positive displacement pumps, oil and gas separators, flow measurement transducers, encoders, control boards with counters, indicating devices, solenoid valves, oil sights, and oil guns. Transport and measurement systems. When the fuel dispenser is working, the positive displacement pump transports the oil from low to high, from low pressure to high pressure, along the pipeline to the flow measurement transducer to measure the volume of oil, and finally delivers it to the user from the oil gun. The difference between the fuel tanker and the general hydraulic transportation system is that the fuel tanker has high measurement accuracy requ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B67D5/04F15B21/02H02P27/04B67D7/04
Inventor 刘亚俊陈建明万勤波蒋征学
Owner TOKHEIM HENGSHAN TECH GUANGZHOU