Metering self-adaptation method for flow meter

A flow meter and self-adaptive technology, applied in the field of metering, can solve problems such as pipeline dose influence and inaccurate metering, and achieve the effect of improving intelligence and efficiency

Inactive Publication Date: 2014-07-02
江苏中聚检测服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The accuracy of the existing flowmeter is not only affected by its own consistency, but also by external factors, such as the pressure of the pipeline, the thickness of the pipeline, the degree of bending of the pipeline, and the friction of the pipeline. The final dose makes a difference
In actual use, the pressure of the pipeline will also change at any time, and the degree of bending of the pipeline during installation is also different, which leads to inaccurate measurement during the actual working process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This embodiment is suitable for systems with constant pipeline parameters, including the following steps:

[0020] A. Establish a one-to-one relationship table between the standard pulse number c and the pulse frequency f of the pipeline, and store it in the memory of the flowmeter, where the standard pulse number c is the number of pulses required to measure a certain amount of fluid V';

[0021] 1000mL pulse number (piece) c 800 900 1000 1200 1400 Pulse frequency (pieces / second) f 25 30 40 50 70

[0022] B. Record the required dose V;

[0023] C. Perform a calibration, that is, record the number of pulses v in the time period t, calculate the pulse frequency f through the formula f=v / t, query the standard pulse number c corresponding to the pulse frequency f through the relational table in step A, Record the measurement duration t' before the measurement ends, and calculate the flow rate of a single timing period by the formula t'*V'*v / c; ...

Embodiment 2

[0028] This embodiment is suitable for systems with constant pipeline parameters, including the following steps:

[0029] A. Establish a one-to-one relationship table between the standard pulse number c and the pulse frequency f of the pipeline, and store it in the memory of the flowmeter, where the standard pulse number c is the number of pulses required to measure a certain amount of fluid V';

[0030] 1000mL pulse number (piece) c 800 900 1000 1200 1400 Pulse frequency (pieces / second) f 25 30 40 50 70

[0031] B. Record the required dose V;

[0032] C. Carry out several calibrations, the interval of each calibration is T, T≥t, that is, record the number of pulses v in the time period t, calculate the pulse frequency f through the formula f=v / t, and pass the relationship in step A The table queries the standard pulse number c corresponding to the pulse frequency f, records the measurement time t' before the next calibration or before the end of t...

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Abstract

The invention discloses a metering self-adaptation method for a flow meter. The method comprises the steps that A. a one-to-one-corresponding relation table of the standard pulse count c and the pulse frequency f of a pipeline is established; B. the needed dose V is recorded; C. calibration is carried out, and flow in a single-time timing period is computed; and D. flow in single-time timing periods in the step C is added. The shortcomings in the prior art can be overcome, automatic calibration is achieved, influence from external factors is removed, metering accuracy is improved, cost is saved, and production efficiency is improved.

Description

[0001] technical field [0002] The invention relates to the technical field of metering, in particular to a metering self-adaptive method for flowmeters. Background technique [0003] The accuracy of the existing flowmeter is not only affected by its own consistency, but also by external factors, such as the pressure of the pipeline, the thickness of the pipeline, the degree of bending of the pipeline, and the friction of the pipeline. The final dose makes a difference. In actual use, the pressure of the pipeline will also change at any time, and the degree of bending of the pipeline during installation is also different, which leads to inaccurate measurement in the actual working process. Generally need to be calibrated before leaving the factory. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a metering self-adaptive method for flowmeters, which can solve the deficiencies of the prior art, realize automatic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F15/00G01F25/00
Inventor 商巧玲
Owner 江苏中聚检测服务有限公司
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