DEVICE FOR TAKING LIQUID SAMPLES FROM PIPELINE Russian patent published in 1999 - IPC

FIELD: examination and analysis of materials. SUBSTANCE: device has sampler positioned in pipeline with sampling hole opposite to flow. Device includes outlet assembly arranged on top, on horizontal or inclined section of pipeline. Sampler is made as tube with sampling hole on side surface. Average value of tube wall thickness on side of hole does not increase from point of sampling tube arrangement in pipeline, and it is not more than 5 mm. Sampling hole is determined by equations by means of width B_j at distance H_j from pipeline generating line positioned from diametrically opposite side relative to outlet assembly. parameters B_j and H_j are determined by equations with i varying from 1 to 9 for continuous and discrete sampling holes. Sampling hole width is monotone function and is selected to be not less than , where G=9 mm; D_nomo=100 mm. Permissible deviation of hole width from the rated one is not over 0.2 mm, distance H_j does exceed 10 mm, rounding radius of sampling hole pointed sections is from 0 to 5 mm. Lower end of tube carries stabilizer, width X_n of which at distance Y_n from lower boundary of hole is determined by rated formula. Value Y_n is also found from rated formula. Deviation of parameters X_n,Y_n from rated values does not exceed 5 mm. Device allows accurate quantitative and qualitative accounts of liquid pumped through pipelines. EFFECT: true sampling. 6 tbl, 4 dwg