GVF-1
FLUID VISUALISATION UNIT – BASIC HYDRAULIC EDUCATIONAL BENCH
This educational unit has been designed to study, evaluate and measure the basic phenomena and parameters occurring in the study of hydraulics for vocational and experimental purposes. A wide range of testing tubes and devices can be connected to the basic bench with the result of a flexible and modular educational tool that can be supplied in a basic arrangement or can be upgraded progressively up to a complete computer assisted data acquisition and experiment processing system. The G.V.F./1 Fluid-Flow Dynamic Phenomena Visualising Unit enables practical tests on range of instruments generally used in fluid dynamics for measuring flow, pressure, head and for visualising directly certain physical phenomena, such as vortices, frictions, head losses in pipes, Basic hydraulic bench with accessories static head, etc., which are for more easily understood by a practical and direct vision of the phenomenon. The reason lays partly in the objective difficulty of the matter and partly in the lack, up to now, of an appropriate instrumentation allowing to approach and "to see for oneself" the reality of observation. BASIC HYDRAULIC BENCH The bench assembly essentially consists of the following components parts: ¾ Mobile base running on castors. Fabricated from steel sections on which the pump unit support, the flow meter and the feed tank are mounted. ¾ Fluid drop basin. Installed on the assembly base it has the function of preventing eventual water leakage from coming into contact with the electrical equipment. ¾ Circulating centrifugal pump, 50 litres/min. flow rate and 32 meter head height. ¾ Feed tank. ¾ Flow rate meter. It is a rotameter calibrated from 500 to 6000 litres/minute for indicating the instant flow rate can be compared to that measured by means of Venturi meters and orifice nozzles, while the theoretical necessary correlation are taken from it. ¾ Fast joint couplings on the delivery line and at the main tank inlet for test devices installation ¾ Detachable reflecting screen. It is fitted with a mobile flood light provided with a proper screen on which the fluid flows can be visualized. ¾ Mobile carrier with laminar beam lights: it has a function of visualizing the vortices turning out in the ducts owing to sharp variations in the duct diameter. It is essential for making evident the difference existing between laminar and turbulent fluid flows in different parts of the duct itself. ¾ Support screen for measuring instruments. It is a panel suitable for mounting measuring instruments as currently used for flow rate and head tests. The manometers are interchangeable according to the proper flow dynamics circuit used. The assembly also includes: register and on-off valve on the feed and discharge line, pump by-pass circuit with valve. On the suction of the pump it is fitted a regulator for the injection of atomized air, through which it is possible to give in a quantity of air bubbles as desired. This allows the vortices and the fluid vein detachment to be visualized, and the lighting system provides for making this phenomena become more evident in details. ¾ Electric control board for pump operation including main switch, pump switch with warning light, continuous speed regulator for the pump electric motor, wattmeter for tests of power absorption in different operational conditions (optional). I - 16153 P.D. da Bissone 36r. GENOA - ITALY - Tel.: +39 010 6501969 Fax: +39 010 6501969 e-mail: patrone@ giacomopatrone.com http://www.giacomopatrone.com
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