POMPE A CAVITES PROGRESSANTES A STATOR COMPOSITE ET SON PROCEDE DE FABRICATION

A progressive-cavity pump intended to impart energy to a fluid, includes at least a casing (1), a stator (2) and a rotor (3) arranged in the stator. The casing has at least two parts, a first part (2a) made of a material of low elasticity and a second part (2b) arranged between the inner wall (1a) o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VANDENBROUCKE ERIC, CHOLET HENRI
Format:	Patent
Sprache:	fre
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS WEAPONS
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Beschreibung
Zusammenfassung:	A progressive-cavity pump intended to impart energy to a fluid, includes at least a casing (1), a stator (2) and a rotor (3) arranged in the stator. The casing has at least two parts, a first part (2a) made of a material of low elasticity and a second part (2b) arranged between the inner wall (1a) of the housing and the first part 2(a), the second part (2b) being suited to apply and/or to maintain a stress sigma exerted by the first part (2a) on the rotor (3) in order to obtain the pressure gain required for the pumped fluid.