Research and verification of internal and external measurement methods of large oil storage tanks capacity based on 3D lasers canning

Abstract

Nowadays, as an important tool for petrochemical enterprises to store and transport various petrochemical products, large oil storage tanks are highly praised by a large number of oil enterprises because of their characteristics of large capacity and stable storage. For the same storage tank, on the premise of elevation determination, the accuracy of the measurement results for capacity actually mainly depends on the accurate measurement of the inner radius of each circle plate. In this paper, a 10000m3 stroage tank T1 is selected to measure the inner radius by strapping tape method, total station internal measurement method and 3D laser scanner internal and external measurement method. Through data comparison, the accuracy of the above methods for measuring the inner radius of the first circle plate of storage tank is discussed and verified, and the difference of measurement results and accuracy between internal and external measurement of ten circle plates of storage tank by 3D laser scanner. It is concluded that the external measurement method of 3D laser scanner based on the principle of cloud to cloud splicing has poor result in tank’s inner radius measurement, but it is feasible based on the principle of target ball splicing.