When transporting hydrocarbons from the fields to the consumer, on average up to 5 % of the pumped oil and petroleum products are lost, where up to 90 % of all losses are accounted for by oil depots.
At the moment, there is no automatic system for accounting for vapors of light fractions of hydrocarbons (LFH) from tanks with large and small respiration.
The aim of the scientific work is to develop a new methodology and system for accounting for mass losses of LFH from evaporation from tanks through a breathing valve in real time.
As a result of the work, the hydraulic resistance of the breathing valve was calculated using the Ansys software package. A discrete dependence of the flow rate through the breathing valve was also obtained depending on the degree of opening of the pressure plate and the excess pressure inside the tank. Two cases of pressure plate opening were considered: fully and half. Based on the obtained discrete dependence, formulas Q(h, ∆P) for calculations were obtained.
With the help of experiments on water and Arduino sensors, it was instrumentally proved that the technique takes place and can be used to calculate LFH losses from the tank.
The equipment for this technique and recommendations on its location were also selected.