SU122706A1 - Experimental setup for research on the hydraulic transport of lumpy materials - Google Patents

Description

Known experimental installations for research in the field of hydraulic transport of lumpy materials, including pipe transport with a pressure gauge device, a device for feeding pulp into transport pipes equipped with a pump, and a measuring tank for measuring the flow of pulp, do not provide a sufficiently high accuracy of pressure measurements in the transport pipes, changes pulp dosages and measurements of its flow without disturbing the flow, as well as adjusting the plant capacity.

The proposed experimental installation is free from these drawbacks due to the fact that, in order to increase the accuracy of the pressures in the conveying pipes, the pulp feed device to the conveying pipes is made with an intermediate pressure reservoir, and to ensure the reliability of the manometric device, it is implemented using air-differential piezometers; for changing the dosage of the pulp and the pressure vessel is made with a shutter equipped with a rotating disk with interchangeable diaphragms; to measure the flow rate of the pulp without interfering with the flow when selecting the flow, the measuring tank is made mobile; to adjust the performance of the transporting pipes are made with interchangeable nozzles.

FIG. 1 shows the experimental setup; in fig. 2-shutter water separator. H-dispenser: in FIG. 3 - the same, section according to the ABCG in FIG. 2

Experimentalization (Fig. 1) turned on the ground line /, pressure line 2, water separator-dispenser 3 with shutter 4 (Fig. 2 and 3), mixing funnel -5, becoming 6, pipes 7-mix n1 nozzles 8, movable measuring tank 9, scales 10, sump 11, differential air-water piezometer 12, mercury manometer / 5. connection 14, compressed air supply 15 and signal pipe 16

No. 122706

The experimental process of hydrotransport of large material on the described installation is as follows.

The sump // is filled with water and suction pump 1 is started, then crushed stone enters the sump to form a pulp, which is pumped by the suction pump to the water separator 3. When the shutter 4 is closed, the crushed stone remains in the inner mesh part of the water separator-feeder, and the water returns to the sump 11 After the dispenser is fully filled with rubble, its entry into the sump is stopped, and the system (works with a constant amount of solid pulp filler. The fine fraction that does not settle in the dispenser is continuously cleaned during the process. complements gravel system.

The formation of pulp in the course of experiments takes place in a mixing funnel 5, into which, through the shutter 4, water-filling crushed stone enters, the amount of which is metered by a rotating disk 17. Disks 17 are interchangeable and differ from each other in diaphragm diameters.

The replaceable rotary disk 17 is mounted on an axis 18 welded to the flange 19. At the tip 20, the disk is pressed using a bolt 5 / with lock nut 22. In stand 6 and pipes 7 a gravity flow of constant height is created.

The pressure drop at various points in the pipelines is determined by the air / water piezometer 12 with great accuracy.

The pulp flow rate is determined by a measuring tank 9 moved by the jet along the rails. Its filling time is measured by a stopwatch. The consistency of the pulp is determined by weighing its measured tank on the weights 10. At the place of discharge of the pulp during the experiments, the nozzles 8 on the tubes 7 are replaced. The flow is choked by seven interchangeable nozzles.

The air-water differential piezometer 12 has four pairs of glass tubes 23, the ends of which are connected by rubber tubes .2 to the points of the pipeline, and the upper ends are connected to the supplies of clean water 14 and compressed air 15.

Subject invention

Claims (5)

1. An experimental setup for research on the hydraulic transport of lumpy materials, including conveying pipes with a gauge device, a device for feeding pulp into conveying pipes equipped with a pump, and a measuring tank for measuring the flow of pulp, differing from the fact that to increase the accuracy of pressure measurements in transporting pipes; a device for feeding pulp into transporting pipes is made with an intermediate pressure reservoir. 2. The form-making of the experimental installation according to claim 1, characterized in that, in order to change the dosage of the pulp, the pressure reserve is made with a shutter equipped with a rotating disk with interchangeable diaphragms. 3. The form of the experimental setup for PP. 1-2, characterized in that, in order to ensure the reliability of the gauge device, it is made using air-water differential piezometers. 4. The form of the experimental setup in PP. 1-3, characterized in that, in order to be able to measure the flow rate of the pulp without disrupting the flow when selecting the flow rate, the measuring tank is made mobile. 5. The form of the experimental setup on PP. 1-4, in contrast to the fact that, in order to adjust the capacity, the conveying pipes are made with interchangeable nozzles.