A method for dynamically calculating the replenishment volume of liquefied natural gas storage tanks

A technology of liquefied natural gas and liquid storage tanks, which is applied in volume measurement instruments/methods, engine lubrication, liquid/fluid solid measurement, etc., which can solve the problems of inability to obtain liquid replenishment volume and loss volume, and achieve the effect of eliminating liquid level fluctuations

Active Publication Date: 2019-07-23
LNGTOP TECH JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the loss during actual rehydration and use, it is impossible to obtain accurate rehydration volume and loss by this method

Method used

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Experimental program
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Effect test

Embodiment Construction

[0018] A method for dynamically calculating the replenishment volume of a liquefied natural gas liquid storage tank according to the present invention, the specific steps are:

[0019] 1) Real-time sampling of liquid level information in storage tanks used to store liquefied natural gas, generate liquid level data, and save the time stamp corresponding to the liquid level data, the sampling cycle is set to be no less than once every two minutes, of course The sampling period can also be adjusted to not less than once per minute or not less than twice per minute according to the actual situation;

[0020] 2) Generate the aggregated liquid level data sequence by merging the liquid level data sequence generated according to the time sequence into one aggregated liquid level data for each M liquid level data, where M is a positive integer, 8≤M≤20, usually M is set to 10;

[0021] 3) Process the obtained aggregated liquid level data sequence: the aggregated liquid level in each se...

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Abstract

The invention discloses a method which can obtain the accrual liquid supplying amount by dynamically calculating liquid supplying amount of a liquefied natural gas liquid storage tank. The method comprises the steps of 1, sampling liquid level information in real time to generate liquid level data; 2, merging the liquid level data into aggregation liquid level data; 3, merging aggregation liquid level data in which the aggregation liquid levels are gradually increased, the full-range times are larger than the shortest liquid adding times, the quotients of the liquid adding amounts and the liquid adding starting amounts are larger than the minimum liquid adding percentages, the liquid adding speeds are smaller than the minimum liquid adding speeds respectively to generate liquid adding records; 4, merging the two liquid adding records if the difference of the final timestamp of the last liquid adding record and the initial timestamp of the liquid adding record at this time is smaller than the liquid adding record maximal interval time, and the quotient of the difference value of the final liquid level of the last liquid adding record and the starting liquid level of the liquid adding record at this time and the absolute value of the final liquid level of the last liquid adding is smaller than the maximum liquid level change percentage; 5, adding the liquid adding amounts of thecorresponding durations respectively to obtain the liquid supplying amounts of various durations. The method has a very wide application range.

Description

technical field [0001] The invention relates to a method for dynamically calculating the replenishment amount of a liquefied natural gas storage tank during the liquid replenishment process of a liquefied natural gas storage tank. Background technique [0002] People in the industry know that in the process of refilling LNG tanks, there is usually no flow meter, and the measurement is carried out by the method of pounds. Due to the loss in the actual rehydration and use process, the accurate amount of rehydration and loss cannot be obtained by this method. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for dynamically calculating the liquid replenishment amount of a liquefied natural gas liquid storage tank that can obtain the actual liquid replenishment amount. [0004] In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a method for dy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F22/00G01F23/00
CPCG01F22/00G01F23/00
Inventor 孙健张航李鑫凌钟克强黄俊鑫徐鹏飞
Owner LNGTOP TECH JIANGSU
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