STUDY OF THE ABRASION PHENOMENON OF A PUMP FOR THE DRINKING WATER SUPPLY IN THE GREAT ALGERIAN SOUTH

Omar KHODJET-KESBA, Ahmed KETTAB

Résumé


Abstract:
The drinking water supply in the Saharan cities of the GreatAlgerian South knows a constant
disturbance espace which is not dependent on the availability of the water resources but rather on
water quality. The pumping of subsoil water charged with suspended fine sand particles causes a
premature wear by abrasive erosion of the pumps in a short time and serious disturbances in the
distribution of drinking water. To study the phenomenon, a test bench was designed at the
laboratory, making it possible to identify the evolution of wear by abrasion of the body, of an
Algerian standard pump. Natural conditions were established; the drinking water used included
particles of fine sand (a mixture of silica and quartz, diameter 0.6-1.4 mm). Which is a frequent
characteristic of water of the area posing the problem. The tests showed after an operating time of
60 hours, a palpable wear with a Ioss of mass of the principal body of the pump which is the
wheel. Confirming the studies completed all over the world in this field. The mechanical effect
of sandy water on the most exposed body was obvious. Premature wear was clone away
from the point of splashing.

Mots-clés


Wear; erosion; abrasion; performances; characteristics

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