Increased-pressure pneumatic transport bench

Department of aerogas dynamics and technical systems dynamics

Head of Department – Corresponding Member of the National Academy of Sciences of Ukraine, D.Sc., Professor V. I. Tymoshenko

Description

The pneumatic transport bench is an assemblage of circulation units, solid phase (bulk material) loading, unloading, and reloading units, and a compressed gas source, which are functionally integrated by pipelines, instruments, and control means; the bench serves to reproduce a gas or two-phase mixture flow whose parameters correspond to those of the pneumatic transport system under development.

Schematic of the pneumatic transport bench:1 – Venturi meter;
2,3 – Du30 and Du50 measuring sections;
4 – gas supply unit;
5 – pressure regulator;
6 – flow switch;
7 – transparent inserts;
8 – video camera;
p, T, Δp – pressure, temperature, and differential pressure pickups;
I – gas flow;
II – two-phase flow

Key specifications

Working pressure0.1 to 3.3 MPa
Power consumption30 kW
Total length of the linear portionup to 70 m
Measuring pipeline diameters30 and 50 mm
Flow speedup to 45 m/s
Solid particle sizeup to 10 mm
Solid phase volume concentrationup to 15%
Charging material volumeup to 30 liters
Coolingwater
InstrumentationVenturi tube, measuring orifice plate, Sapfir 22DD differential pressure pickups, TSM 0879 temperature transducers, DDI-20 pressure transducer
General view of the bench

Capabilities

The pneumatic transport bench is fitted with equipment, control means, and instruments that make possible the following types of operation:

  • solid phase and carrier gas closed-circuit operation;
  • gas closed-circuit and solid phase open-circuit operation;
  • solid phase closed-circuit and gas open-circuit operation;
  • solid phase and gas closed-circuit two-loop operation;
  • solid phase and gas closed-circuit single-loop operation.

Advantages

In the level of working pressure, the bench has no parallel both in Ukraine and abroad.

Use

In the design of increased-haul pneumatic transport systems for the determination of the hydraulic characteristics of gas – solid particles two-phase flows in an uninvestigated carrier gas pressure range: hydraulic resistance, critical speed and dancing speed, specific power consumption, and allowable particle size.

Reloader
Loader
Circulating unit
OFFICE ADDRESS:Institute of Technical Mechanics , 15 Leshko-Popelya St., Dnipro 49005, Ukraine
PHONE NUMBER:+38-056-372-06-41
E-MAIL:vitymoshenko@nas.gov.ua

The “Technical Mechanics” Journal

Frequency: 4 times a year

Languages: Ukrainian, English

Editor-in-Chief: Volodymyr P. Poshyvalov, Corresponding Member of the National Academy of Sciences of Ukraine

http://journal-itm.dp.ua/index.html