DUSE D'ETRANGLEMENT POUR REDUCTION DE PRESSION

This choking nozzle comprises a casing having a first end and second end defining a circular bore of variable diameter along its axis with zones of large diameter adjacent to the first and second ends. A zone 111 of minimum diameter d is intermediate between the two ends. The bore a has the shape of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	WARREN MAURICE ZINGG ET LARRY DALE WELCH
Format:	Patent
Sprache:	fre
Schlagworte:	APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS BLASTING CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL ORCHEMICAL PROCESSES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING NOZZLES OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS PIPES SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	This choking nozzle comprises a casing having a first end and second end defining a circular bore of variable diameter along its axis with zones of large diameter adjacent to the first and second ends. A zone 111 of minimum diameter d is intermediate between the two ends. The bore a has the shape of a trumpet mouthpiece 110 between the first end and the zone of minimum diameter 111 and it has a truncated cone shape 112 between the second end and the region of minimum diameter 111 with a total included angle of 4 to 8 DEG approximately and a length along the axis of approximately 9d between the region of minimum diameter and the second end.