INTELLIGENT INFORMATION-MEASURING SYSTEM OF THERMOPHYSICAL PROPERTIES OF THERMAL INSULATION COATINGS OF TRUNK PIPELINES

• Main Authors: Zoya M. Selivanova, Vladimir I. Pavlov
• Format: Article
• Language: Russian
• Published: Tomsk Polytechnic University 2019-10-01
• Series: Известия Томского политехнического университета: Инжиниринг георесурсов
• Subjects: conceptual model of design; bayesian approach; measurement model; main pipeline; tank
• Online Access: http://izvestiya.tpu.ru/archive/article/view/2312/2085

Relevance of the research. In the main pipelines for transportation as well as in tanks for oil and gas storage the heat-shielding coverings from various materials are applied. The heat-shielding of these objects is inevitably intensively affected by various climatic factors, and in certain cases by mechanical influence that leads to degradation of its properties. Development of intellectual information and measuring system with reconfigurable structure for operating control of heat-insulating materials condition, which allows expanding the functionality of the existing similar systems and providing the required accuracy of measurements, is important and relevant. The aim of the research is to increase the accuracy in determining the coefficient of heat conductivity of various heat-shielding coverings of the main pipelines and tanks by their production and operation for prevention of deterioration in properties of thermal insulation under the influence of the external influencing factors. Objects: heat-shielding coverings of the main pipelines and tanks used in oil and gas transporting and storage. Methods. The methodological basis at solution of objectives of design of intellectual information and measuring system of heatphysical properties of materials consists in: theory of measuring systems, artificial intelligence methods, Bayesian approach. Results. The authors have developed the conceptual model of designing the intellectual information and measuring system of heatphysical properties of heat-insulating coverings of the main pipelines for oil and gas transportation and tanks at storage. Within the conceptual model the authors developed the technique for defining a measuring situation in heatphysical measurements on the basis of preliminary identification of properties of the studied material using the Bayesian approach to processing the output signals of primary measuring converters and structural components of the measuring channel of system. The authors designed the model of reconfiguring and the relevant structure of intellectual information and measuring system of heatphysical properties of heat-insulating coverings to increase the accuracy of determination of coefficient of heat conductivity of heat-insulating materials. The relative error of measurement of coefficient of heat conductivity when using the offered system makes no more than 5 %.