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Liquid filling accuracy control method for liquid filling quantity smaller than minimum measured quantity

A precision control and measurable technology, applied in liquid distribution, liquid distribution, conveying or transfer devices, special distribution devices, etc., can solve problems such as losses, many motorcycle refueling operations, and uncontrollable minimum filling volume accuracy, and achieve Precision control, effective precision

Active Publication Date: 2013-04-24
FOSHAN HAIZHUORUI FLUID CONTROL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of a relatively large amount of refueling, this control method solves the "overshoot" problem very well, but when the amount of refueling is small, such as refueling a motorcycle, it will cause the above-mentioned situation, and the actual fuel output of the tanker The volume will be more, resulting in more motorcycle refueling business at gas stations and losses
Therefore, the existing method cannot be applied to the control of the quantitative refueling accuracy of the fuel dispenser below the minimum measured
[0007] In the existing liquid filling system pumped by a motor and controlled by a valve, the above-mentioned overshoot problem will occur as long as precision control is required. The problem of uncontrollable fluence accuracy

Method used

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  • Liquid filling accuracy control method for liquid filling quantity smaller than minimum measured quantity
  • Liquid filling accuracy control method for liquid filling quantity smaller than minimum measured quantity
  • Liquid filling accuracy control method for liquid filling quantity smaller than minimum measured quantity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, the liquid filling machine is used as the fuel filling machine, and the fuel filling amount V is preset 0 2L (the fuel filling volume is lower than the minimum measured value of the tanker), the set overshoot percentage As an example, the following will be explained.

[0029] The method of the present invention draws the relationship curve between the percentage of overshoot of the dispenser and the buffer frequency of the variable frequency motor in the variable frequency hydraulic control system of the dispenser, and realizes the accuracy control of the dispenser in quantitative refueling according to the relationship curve; wherein, the percentage of overshoot is Overshoot amount V and preset fuel amount V 0 The ratio of the overshoot V is calculated by the following formula:

[0030] V = 0.1154 + 0.0527 X In [ 0.1030 X ( 0.0659 - 9.5496 n ) X ( 0.1047 n - 10.9418 ) + 0.1118 ]

[0031] Among ...

Embodiment 2

[0042] The control method of the present invention is also suitable for effective control of the accuracy of the fuel filling machine higher than the minimum measured fuel dispenser. In this embodiment, the liquid filling machine is used as the fuel dispenser, and the fuel filling volume V is preset 0 45L (the fuel filling volume is higher than the minimum measured value of the tanker), the set overshoot percentage As an example, the following will be explained.

[0043] The difference between this embodiment and the first embodiment is only the fuel dispenser parameter preset fueling volume V 0 The other parts are consistent with the first embodiment.

[0044] Such as figure 1 As shown, corresponding to the pre-set amount of 45L fueling volume (the fueling volume is higher than the minimum measured value of the fueling machine), the present invention implements the accuracy control of the fueling machine in quantitative fueling according to the relationship curve and includes the ...

Embodiment 3

[0051] The control method of the present invention is also applicable to other liquid filling fields. In this embodiment, the liquid filling machine is a liquid beverage filling machine as an example to describe the following.

[0052] In the actual beverage filling, the method of the present invention can select different buffer frequencies for different preset liquid beverage filling quantities, and can control the percentage of overshoot within a smaller error range (for example, 0.1%) to achieve Effective control of the accuracy of the beverage filling machine that is lower than the minimum to be measured in the quantitative beverage filling.

[0053] According to the relationship curve, the present invention realizes the accuracy control of the liquid beverage filling machine in the quantitative beverage filling process, including the following steps:

[0054] The first step is to store the drawn overshoot percentage of the liquid beverage filling machine and the buffer frequenc...

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Abstract

The invention provides a liquid filling accuracy control method for liquid filling quantity smaller than minimum measured quantity. The method is characterized by including: drawing a relation curve between over-filling percentage of a liquid filling machine and buffer frequency of a variable frequency motor in a variable frequency hydraulic control system of the liquid filling machine, and performing accuracy control to the liquid filling machine during quantitative liquid filling according to the relation curve. The over-filling percentage is the ratio of over-filling quantity V to preset filling quantity V0. The over-filling quantity V is obtained according to an equation: V=0.1154+0.0527*In[0.1030*(0.0659-9.5496 / n)*(0.1047n-10.9418)+0.1118], wherein n is buffer speed of the variable frequency motor; buffer frequency f is equal to n / 60. Aiming at different filling quantities during actual liquid filling, different buffer frequencies can be selected, the over-filling percentage V / V0 can be controlled with a smaller range of errors, and accordingly liquid filling accuracy control for quantitative liquid filling with the liquid filling quantity smaller than the minimum measured quantity is achieved.

Description

Technical field [0001] The invention relates to a method for controlling the accuracy of liquid filling. Background technique [0002] The control of the accuracy of liquid filling involves all aspects of our production and life, such as the bulk retail of liquid beverages, and the sales of fuel for dispensers. Under the current technical conditions, the state has made specifications and requirements for the accuracy of some liquids related to the national economy and people’s livelihood. These specifications and requirements are aimed at requirements above a certain filling volume, but below a certain filling volume, because of the existing technology Conditions simply cannot carry out precision control, so corresponding specifications and requirements cannot be issued. For the item that seriously affects the national economy and people’s livelihood-the refueling accuracy, the minimum measured value of the refueling machine produced in my country is usually 5 liters. When the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B67D7/08B67D1/00
Inventor 刘亚俊王志泳蔡俊朱旭
Owner FOSHAN HAIZHUORUI FLUID CONTROL ENG
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