Digital models, sensor network and autonomous telemetry modules for cryogenic storage systems

The article is devoted to organizational and technical aspects of remote monitoring the state of industrial systems, aimed at loss prevention during storage and transportation of cryogenic products. The necessity of research and development of new technical means for remote telemetry used in monitoring of the cryogenic tanks state is substantiated. The structure of a monitoring sensor network based on low-power autonomous LoRaWAN modules for cryogenic equipment of different types is presented. An algorithms for assessment the technical condition of the thermal insulation of a cryogenic tank have been developed. The first algorithm is used for assessing the state of the thermal insulation of a cryogenic tank by calculating the deviation of the pressure growth rate in the tank from the normal value. For cryogenic tanks, additionally equipped with a vacuum pressure sensor, a real-time calculation of the non-drainage storage of the product can be performed based on the measured value of the vacuum pressure in the heat-insulating cavity. Thus, the second algorithm is used for calculating the current estimate of the reserve time of non-drainage storage of the product in a cryogenic tank. A schematic diagram of an autonomous telemetry device for a tank container of different types based on a long-range module is described. A method is proposed and a device is described for monitoring the condition of cryogenic system elements using an unmanned aerial vehicles.