METHOD FOR DETERMINING SPATIAL LOCATION OF PIPELINE Russian patent published in 2021 - IPC F17D5/00 

FIELD: control and management technology.

SUBSTANCE: invention relates to control and measurement technology, it can be used for determining the spatial location of the pipeline axis, regardless of the features of its laying. On the pipeline, with a defined step in the projection on the axis of the pipeline, marks are installed containing spatial orientation sensors that determine the angles of rotation in the orthogonal coordinate system, azimuth and altitude position. Then, the operations of taking readings from the sensors and transmitting them to the processing point are performed, which can be implemented in one of three ways. The first one is occurred when passing an in-line device with a reader attached to it. The marks are installed on the inner surface of the pipeline, the sensors are interrogated as a result of pointing an electromagnetic field at the mark at the time of passing a reader next to it and generating an induction current in it, and the sensor readings are transmitted to the reader by means of a radio signal. The second one is occurred when performing a ground survey, it differs from the first one in that the marks are installed on the outer surface of the pipeline, and the interaction between the reader and the marks occurs outside the pipeline. The third one is occurred when connecting marks installed on the outer surface of the pipeline through communication cables with a power source, a sensor survey unit and information collection. After collecting information from the sensors, as well as determining the distance between the marks in the projection on the pipeline axis, the software is used to construct interpolating functions of the pipeline axis position in mutually perpendicular coordinate planes, as well as the rotation of the pipeline relatively to its own axis, allowing one to calculate the longitudinal and shear stresses at any point of the pipeline section caused by its spatial location.

EFFECT: increased accuracy of determining the spatial location of the pipeline axis.

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