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Information × Registration Number 0221U103530, 0115U005324 , R & D reports Title Development of methods and means of multi-channel acoustic monitoring and evaluation of the actual state of underground pipelines without their disclosure in the operating conditions popup.stage_title Head Vladimirsky Alexander A., Кандидат технічних наук Registration Date 22-02-2021 Organization Institute of Modelling problems in power energetics of NAS of Ukraine popup.description2  The object of research is the processes of changing the quality of underground pipelines. The purpose of the work is the creation of methods, diagnostic models, computational algorithms and technical means for solving the problems of diagnostics of urban underground pipeline systems. The content of the work. A methodology has been developed for assessing the actual technical condition of the wall of pipelines of heating networks with underground channel laying without opening them by instrumental examination of sections of heating networks in places of access to pipelines and on the ground above the places of their laying. The technique is based on the application of the acoustic active-passive method of remote diagnostics of the state of the metal of pipelines of heating networks. The method is implemented on the basis of the multi-channel acoustic signal recorder PASTR-1 developed by the Pukhov Institute for Modeling in Energy Engineering National Academy of Sciences of Ukraine. Various acoustic measurement schemes are considered - with sensors on the pipeline, on the ground and their combinations when searching for leaks in underground pipelines with the calculation of the correlation functions of the received signals. The application features of these schemes, the corresponding informative parameters of the correlation functions, and the developed instrumentation are presented. PIPELINE, LEAKAGE, CORROSION THINING, VIBRATION, CORRELATION. Product Description popup.authors Anfimova Galina V. Vladymyrskyi Ihor A. Kryvoruchko Ihor P. popup.nrat_date 2021-02-22 Close