FIELD: measurement technology.
SUBSTANCE: group of inventions refers to the collection of composite gas samples after evaporation and conditioning in the gas phase of the cryogenic liquid hydrocarbon source during the pumping process for analysis. Device comprises at least first and second injection lines of the vaporized sample. Each of which includes at least a first direct feed line, second speed loop line and the third battery power line. Each of the first direct feeding lines of the first and the second input lines of the evaporated sample is directly connected to the gas analyzer for in-line real-time flow analysis of the non-composite gas sample. Each of the lines of the speed loop is connected to a high-speed circuit containing a pressure regulator, high-pressure pump, a number of valves with solenoid control for controlled filling of a plurality of cylinders of non-composite test to store fresh gas samples obtained at predetermined intervals of the process, and a bypass outlet to the stripping gas system. Each battery line includes at least one solenoid operated valve. Specified battery line is intended for passing a sample of gas of a selected volume at selected time intervals to a pressure regulator, solenoid operated valve, a gas accumulator for receiving a plurality of periodic gas samples of a selected volume, outlet from a gas valve with a valve and a high-pressure pump to maintain pressure in the gas accumulator, plurality of sample capture cylinders for receiving composite samples from the gas accumulator after the process is completed above the source. System for selective sampling includes a housing, a controller located within the housing, channel for evaporation gas, gas analyzer, speed loop, set of removable sample cylinders, battery, at least one pump, a plurality of removable sample capture cylinders for receiving composite vapor gas samples from a battery and an apparatus for removing residual gas to remove residual gas from the system after the process of pumping a cryogenic liquid hydrocarbon. Method for sampling evaporation gas from a liquid cryogenic liquid hydrocarbon is carried out using a gas sampling system.
EFFECT: selection of composite samples for the conditioning of cryogenic gas is ensured.
20 cl, 4 dwg
