Devices and distribution of liquefied petroleum gas for admission to and leave TANK

摘要

The invention relates to the field of accounting liquefied petroleum gas (hereinafter - LPG), and in particular, to measurement of mass of LPG to the reception and leave to gas-filling stations (hereinafter - the filling station), and multi-fuel filling stations (hereinafter - MAZS).; The technical result achieved solution is to increase the accuracy of accounting when receiving a LPG tank or leave out of the tank and is provided by taking account of the liquid and vapor phases temperature differences of LPG in the tank and their effect on the thermal expansion of the tank.; Said technical result is achieved due to the fact that accounting device designed liquefied petroleum gas (LPG), comprising: a storage tank for LPG; structurally integrated in the tank means for receiving and dispensing LPG; Two temperature sensors are fixed to the lower and upper parts of the tank; a processing unit adapted to determine the temperature t _w of the liquid temperature t and vapor phases _n, and to determine the volume occupied by the liquid and vapor V _w V _n phases on the basis of known volume V _RES and tank shape and a certain level H; wherein the processing unit is adapted to adjust the volume occupied by the liquid and vapor phases, taking into account the thermal expansion of the tank occupied by the liquid and vapor phases; wherein the processing unit is adapted to determine the mass M _n vapor of LPG as the product of a certain density ρ _P vapor LPG and adjusted the volume occupied by the vapor of LPG phase in the tank, to determine the weight of the LPG by calculating the total mass M ₀ of LPG in the tank, wherein the processing unit is adapted to derive a signal from said means for receiving and dispensing the beginning LPG receiving operation or traveling, memorizing the value of the early _{0_NACH} certain mass m of LPG in the tank before the operation, to re-determine the m Assa LPG M _{0_KON} after completion of receiving operation or traveling, to determine the mass M _{0_razn} received tempered or LPG as the difference M -M _{0_kon0_nach.} 1 bp f BACKGROUND ZP 4 f-ly.