SAMPLER FOR FLUID SAMPLING, SUITABLE FOR INSTALLATION IN SYSTEM WITH TEMPERATURE VARIATIONS Russian patent published in 2017 - IPC G01N1/10 G01N33/22 G01N33/26 

FIELD: measuring equipment.

SUBSTANCE: sampler (100; 300; 400; 500; 610; 620; 630) is adapted to be installed in a system with temperature variations that contains or conveys liquid. The sampler comprises of a section (304; 404; 504'; 604) with walls partially surrounding the cavity (301; 401; 501'; 601) filled with a liquid and comprising of the first and second opening. Through the first opening (303; 403; 503; 603), the liquid in the cavity flows out of the cavity. Through the second opening (307; 407; 507; 607), the liquid in the system flows into the cavity. The first opening is equipped with the first door element (305; 405; 505'; 605; 605'; 605") that opens when the temperature of the liquid in the cavity increases and the fluid expands and creates excess pressure in the cavity. The second opening is provided with the second door element (309; 409; 509'; 609; 609'; 609'') which opens when the temperature of the liquid in the cavity decreases and negative pressure is created in the cavity. The sampler unit contains at least two samplers. The system undergoes variations in temperature between the residual and operating temperatures and contains a sampler mounted in a hollow component containing or transporting liquid. The vehicle comprises of an internal combustion engine with a fuel system. The method for analyzing a liquid with a sampler or sampler unit comprises of the following steps. The cavity of the sampler is filled with the starting fluid. The sampler is placed in a system in which the sampler comes into contact with the liquid under study. The liquid in the system is subjected to variations in temperature between the residual and the operating temperature, and vice versa. The liquid is allowed to flow out of the cavity to flow out of the cavity when the temperature of the liquid increases, flow into the cavity when the temperature drops, and to stir inside the cavity by inflow and outflow of liquid. The sampler or sampler unit is removed from the system. The liquid is removed from the sampler and the level of the substance in the liquid is analyzed by an analysis method adapted to the substance under study.

EFFECT: simplification of sampling fluid in the system with temperature variations for further analysis.

21 cl, 13 dwg