METHOD OF LIQUID-CONVEYING DEVICE OPERATION CONTROL Russian patent published in 2017 - IPC F24D19/10 F24J2/40 F24J2/46 

FIELD: transportation.

SUBSTANCE: method of operation control of a pipeline device with the first pipeline area at the hot part and the second pipeline area at the cold part connected to it, a pump for supplying liquid being located in the first pipeline area, which consists in starting the programme controlling the pump start while activating the pump, which provides the following stages: A) setting the supplied volume of fluid, B) starting the fluid supply cycle providing the predetermined liquid amount supply from the first pipeline area to the second pipeline unfilled area, C) starting the fluid return cycle providing the return to the first pipeline section of the liquid amount supplied to the second pipeline section, as well as the determination of the return flow temperature of the returned fluid on the first pipeline area, D) increasing the predetermined supplied amount of liquid and performing one of the following substages: D1) repetition of stages A) to D), if the return flow temperature of the returned liquid is above its limit temperature or equal to it, and the increased determined supplied amount of liquid is less than the limit amount or equal to D2) stopping the execution of the programme controlling the pump start and switching the pump to the normal operation mode, if the increased determined supplied amount of the liquid exceeds the limit, D3) stopping the execution of the programme controlling the pump start, deactivating the pump and changing the determined supplied amount of liquid towards the initial value, if the return flow temperature is below its limit temperature.

EFFECT: possibility to prevent faults on the second pipeline area located in the cold part due to the freezing of the liquid.

12 cl, 3 dwg