Control method for building up pressure by means of pressure intensifiers, especially for testing the compression strength of tubes

The method involves filling the pipe with liquid and subjecting the liquid to a further liquid at defined pressure using two pressure converters subjected to hydraulic oil connected to a supply and the pipe's interior via lines with non-return valves. The converters are connected to an operatin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FELDMANN, UWE, KRUTZ, WOLFGANG, SCHIFFERS, HANS-GÜNTER, KOLBE, MANFRED
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LIGHTING MEASURING MECHANICAL ENGINEERING PHYSICS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	The method involves filling the pipe with liquid and subjecting the liquid to a further liquid at defined pressure using two pressure converters subjected to hydraulic oil connected to a supply and the pipe's interior via lines with non-return valves. The converters are connected to an operating system via a control unit so that as soon as a first pressure converter nears its end position its speed is reduced and the next converter is set moving. The method involves filling the interior of the pipe (1) after sealing its ends and subjecting the liquid to a further liquid under a defined pressure using two pressure converters (D1,D2) subjected to hydraulic oil connected to a supply on the high pressure side via lines with non-return valves (6,6') and to the pipe's interior via further non-return valves (6'',6'''). The pressure converters with series displacement sensors (W1,W2) and control valves (18,19) are connected together and to an operating system via a common control unit (23) so that as soon as a first pressure converter nears its end position its speed is reduced and the next converter is set in motion simultaneously.