DEVICE TO MEASURE LIQUID FLOW IN OPEN CANALS Russian patent published in 2013 - IPC G01F1/66 

FIELD: measurement equipment.

SUBSTANCE: device to measure a liquid flow in open canals comprises a unit of average liquid flow speed measurement, comprising at least a pair of transceiving sensors, and a unit of liquid level measurement, comprising at least one transceiving sensor, connected with a device for control of ultrasound pulses generation, calculation and display of information about liquid flow. The unit of average liquid flow speed measurement is made in the form of two sliding rods, one of which is installed on the side wall of a canal and has a hinged joint with a base fixed on the canal bench as capable of defining the angle of slope inclination towards the horizon, and is equipped with ultrasound transceiving sensors and along its entire length with the possibility to adjust their position. The other sliding rod is installed horizontally in one vertical plane with the first sliding rod, at the same time its one end is equipped with a hand winch drum and is fixed, for instance, on a tripod installed on the canal bench. At the other end of the second sliding rod there is a guide unit for displacement of a rod of fixed length with a weight at the end and with reflectors of ultrasound pulses installed on the rope. Ultrasound transceiving sensors are installed in one horizontal plane with reflectors of ultrasonic pulses at the distance from each other, equal to the distance between reflectors of ultrasound pulses. The unit of liquid level measurement is made in the form of an ultrasound transceiving sensor installed on the horizontal sliding rod. At the same time both sliding rods are installed as capable of their displacement along the canal.

EFFECT: increased accuracy of water accounting of hydro-reclamation systems, improved actions of drainage and increased efficiency of using drained mineral soils, and also in improvement of design, construction and operation of drainage systems.

3 dwg