| 摘要 |
measurement technology. SUBSTANCE: process can be employed to measure flow rates in pipe- lines where installation of traditional flowmeters is difficult. Process measuring and controlling parameters of flow of liquid or gas in vessel with elastic walls includes excitation of elastic waves in the form of pulses along and against flow, measurement of time of passage by pulses of base distance from radiator to detector in two directions: along and against flow, determination of value of velocity and flow rate by difference of time of passage of base distance by these pulses. Characteristic feature of given process consists in excitation of ultrasonic pulses in elastic walls of vessel. In this case pair " radiator-detector " is located on analogous wall of vessel and velocity V of flow is found with the use of mathematical relation given in description of invention. Second pair " radiator-detector " is employed to excite and receive ultrasonic wave. Radiator and detector of that pair are placed in order opposite to that of first pair and at same base distance. EFFECT: enhanced measurement precision with simplified realization of process. 1 cl, 1 dwg |
