Unlock instant, AI-driven research and patent intelligence for your innovation.
A Method for Determining Online System Error of Mass Flowmeter and Its Application
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A mass flowmeter, system error technology, applied in the direction of measuring devices, liquid/fluid solid measurement, instruments, etc., to achieve the effect of making up for defects
Active Publication Date: 2020-02-28
浙江中衡商品检验有限公司
View PDF7 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
This is the defect of the existing verification or calibration technology of mass flowmeter
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0058] Embodiment 1 (2#):
[0059] A certain batch of flowmeters and shore tanks are compared, measured and calculated according to the above method: FEF (20111108-20111210, 40) = (1.00035, 100%, 0.00118, 0), indicating that the flowmeter is 40 during the period from 20111108 to 20111210 FEF of samples, whose The value is 1.00035, the Q value is 100%, the S is 0.00118, and there are 0 outlier batches during T1-T2.
[0060] Since Q≥95% and S≤0.0025 and c / A It is determined that the error of the flowmeter system is within a reasonable range, so the flowmeter is used for handover measurement.
Embodiment 2
[0061] Embodiment 2 (FI-01):
[0062] A certain batch of flowmeters and shore tanks are compared, measured and calculated according to the above method: FEF (20120705-20130224, 51) = (0.99867, 98%, 0.00194, 0).
[0063] Since Q≥95% and S≤0.0025 and c / A It is determined that the system error of the flowmeter is not within a reasonable range, so the flowmeter suspends the transfer measurement and performs online correction of the flow coefficient.
[0064]After the adjustment, re-comparison of a certain batch of flowmeters and shore tanks, measured and calculated according to the above method: FEF (20130408-20131029, 40) = (1.00028, 100%, 0.00142, 0).
[0065] Since Q≥95% and S≤0.0025 and c / A It is determined that the error of the flowmeter system is within a reasonable range, so the flowmeter is put back into use for handover measurement.
Embodiment 3
[0066] Embodiment 3 (07#):
[0067] A certain batch of flowmeters and shore tanks are compared, measured and calculated according to the above method: FEF (20140725-20160314, 71) = (1.00008, 97%, 0.00173, 0).
[0068] Since Q≥95% and S≤0.0025 and c / A It is determined that the error of the flowmeter system is within a reasonable range, so the flowmeter is used for handover measurement.
[0069] Due to production adjustments, the flowmeter was discontinued from 20160315 until 20170217. By the end of June, a certain batch of flowmeters and shore tanks were compared. According to the above method, the measurement and calculation were: FEF (20170217-20170630, 31 )=(1.00077, 100%, 0.00000, -30).
[0070] Since c / A=97%, far exceeding 10%, the evaluation system is unreliable, then analyze the metering conditions of the metering system based on the actual situation, and determine the unreliable cause according to the analysis results: After analysis, the metering conditions of the s...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention relates to a mass flowmeter online system error determination method and application thereof. Existing metering conditions in application of mass flowmeters are used, on the basis of a measurement error theory, shore tank metering is adopted as a comparison standard, a probabilistic statistical method is used for establishing a comparison mathematical model, and mass flowmeter onlinesystem errors are found and determined. Compared with the prior art, the developed mass flowmeter online system error determination method has the advantages that on the one hand, shore tank meteringadopted as the comparison standard is a standardized liquid product metering method, the established mathematical model is based on the measurement error theory and the probabilistic statistical method, and the operation is simple and convenient; on the other hand, by means of the method, the mass flowmeter online system errors can be effectively determined and adopted as a basis for correcting flow coefficients to achieve the purpose of online calibration, and defects of existing verification techniques of the flowmeters are overcome.
Description
technical field [0001] The invention relates to the field of flow metering, in particular to a method for determining an online system error of a mass flowmeter and an application thereof. Background technique [0002] Shipment measurement of liquid petroleum products is a daily work of petrochemical production and storage enterprises. Since it is directly related to the economic interests of the consignor, consignee and carrier, etc., measurement is the calculation of money, so the establishment and maintenance of product It is of great significance to maintain the normal order of shipping measurement and ensure the fairness and accuracy of measurement to safeguard the legitimate rights and interests of all parties and establish a good corporate image. [0003] Shipment measurement of liquid petroleum products mainly includes mass flow meter measurement, shore tank measurement and ship cabin measurement. is 0.005. At present, the custody transfer of petroleum products mos...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More