A continuous real-time leakage calculation model based on atmospheric vertical storage tank body

Abstract

The invention discloses a continuous real-time leakage calculation model based on atmospheric vertical storage tank body. Firstly, based on the instantaneous mass flow rate mathematical model of liquid flowing out through the hole of the tank after the leakage of the atmospheric pressure vertical storage tank, according to the volume flow rate formula and the law of mass conservation, the materialdescending velocity model of the tank after the leakage, which is characterized by the liquid level height above the leakage hole, is constructed; secondly, the descending velocity of the liquid level in the storage tank is derived through the descend height of the liquid level in the storage tank, and the descending velocity change rate of the liquid level in the storage tank is introduced; thirdly, a calculation model of continuous real-time leakage of tank body is established by integrating the rate of change of liquid level descending velocity and the liquid level descending velocity in the tank during a period of continuous leakage. The calculation model of the invention can improve the accuracy of the continuous real-time leakage quantity calculation of the storage tank body, and the calculation of the continuous leakage quantity in any leakage time period is not affected by the leakage position of the storage tank body, and has a broad application prospect in the calculation ofthe continuous real-time leakage quantity of the atmospheric vertical storage tank body.

Description

technical field [0001] The invention relates to the field of leakage analysis and calculation of storage tanks, in particular to a continuous real-time accurate calculation model of leakage at any weak part of a normal-pressure vertical storage tank body based on leakage time characterization. Background technique [0002] After a leak occurs in an atmospheric vertical storage tank, the amount of liquid leakage is a powerful basis for analyzing the consequences and scope of the accident caused by the leakage of the storage tank. The accurate calculation of the leakage amount provides a scientific and effective basis for preventing and formulating accident prevention measures. [0003] The current method used to calculate the continuous real-time leakage of the atmospheric vertical storage tank body is roughly equal to the product of the instantaneous mass flow rate and the leakage time. Calculated by multiplying the continuous leak time value. Because the instantaneous mass...

AI Technical Summary

Problems solved by technology

Because the instantaneous mass flow rate changes continuously with the leakage time, that is, the instantaneous mass flow rate calculation model is only used to calculate the instantaneous mass flow rate of the material at any time and at any point after the leakage of the atmospheric vertical storage tank body, and cannot be used for accurate Calculate the amount of liquid leaked in a continuous period of time from an atmospheric vertical storage tank

This problem makes it difficult to provide accurate numerical basis for the analysis of the accident consequences and scope of the accident caused by the leakage of the storage tank, and it is difficult to provide a basis for the prevention and formulation of accident prevention measures. Scientifically valid and accurate basis

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