Abstract:
Die vorliegende Erfindung betrifft einen Druckbehälter (10) für Gase, insbesondere Helium, der dadurch gekennzeichnet ist, dass dieser eine Außenhülle aufweist, die eine Druckbeständigkeit bis zu einem Gasinnendruck von wenigstens 10 bar aufweist, dass die Außenhülle des Druckbehälters wenigstens eine hochdiffusionsbeständige Barriereschicht aufweist mit einer Leckrate für Helium bei einem Gasinnendruck von 10 bar und Raumtemperatur von vorzugsweise weniger als 10 -2 mbar.l/s und dass der Behälter ein Aufnahmevolumen für unter Atmosphärendruck stehendes Gas von wenigstens 25 Liter hat. Die Außenhülle des Druckbehälters kann wenigstens eine Barriereschicht aus einer flexiblen Polymerfolie mit Hochbarrierefunktion oder Ultrabarrierefunktion umfassen oder wenigstens eine hochgasdichte flexible Barriereschicht aus EVOH. Der Behälter kann beutelartig sein oder insbesondere bei höheren Drücken in sich steif. Für die Herstellung der Schicht, die die hohe Druckfestigkeit gewährleistet, kann man beispielsweise hochfeste Kunststoffe aus Fasergranulaten verwenden. Zur Aussteifung und Stabilisierung des Druckbehälters können Nähte (12) beispielsweise in den seitlichen Randbereichen vorgesehen sein. Für die Entnahme des Gases kann der erfindungsgemäße Druckbehälter 10 einen Kugelhahn 11 als Verschlussorgan aufweisen.
Abstract:
Gasspeicher mit einer äußeren und einer inneren Membran (1, 2), wobei die innere Membran (2) einen variablen Gasspeicherraum (20) teilweise umgibt und in der äußeren Membran (1) eine Membranöffnung (40) für eine Vorrichtung zur Messung des Gasspeicherraum-Füllstandes (41) vorgesehen ist, die einen Füllstandsensor (42) umfaßt, der auf einer Sensorhalterung (59) befestigt ist, welche Sensorhalterung (59) ihrerseits über ein Verbindungselement (56') mit dem Öffnungsrand der Membranöffnung (40) verbunden ist, wobei das Verbindungselement (56') durch einen Schlauch (46) gebildet ist, wobei eine Endöffnung des Schlauches (46) mit dem Öffnungsrand der Membranöffnung (40) verbunden ist und an der anderen Endöffnung des Schlauches (46) die Sensorhalterung (59) mit dem Füllstandsensor (42) angebracht ist, sodaß bei Verwendung der zwischen der inneren Membran (2) und der äußeren Membran (1) vorhandene Stützdruck den Schlauch (46) über der Membranöffnung (40) aufspannt und damit der Füllstandsensor (42) in einem Abstand zur Membranöffnung (40) positioniert wird.
Abstract:
A cellular reservoir flexible pressure vessel is formed as a series of closely packed tubes fitted into a pair of opposing end caps. The end caps have individual receptacles sized and shaped to receive the tube ends that are secured with adhesive or radio frequency welding. At least one end cap has a passageway for connection of the vessel. The flexible pressure vessel has a pressure relief device comprising a reduction in thickness of one end cap at a predetermined location. When subjected to overpressure it fails at the predetermined location. Other pressure relief devices include: a projecting member on the vessel surface, a weakened section of the passageway, a weakening or an absence of braiding material or hoop winding at a predetermined location on the vessel surface or along the passageway, a weakening or spreading of fibers in either the reinforcing panels or the flexible blankets covering the vessel.
Abstract:
A wheeled personal transport device, for example, a wheelchair, includes a pressure vessel for providing a portable supply of medicinal gas for a user of the transport device. The pressure vessel is formed from a plurality of polymeric hollow chamber having either en ellipsoidal or spherical shape and interconnected by a plurality of relatively narrow conduit sections disposed between consecutive ones of the chambers. The pressure vessel includes a reinforcing filament wrapped around the interconnected chambers and interconnecting conduit sections to limit radial expansion of the chambers and conduit sections when filled with a fluid under pressure. The container system further includes a fluid transfer control system attached to the pressure vessel for controlling fluid flow into and out of the pressure vessel and a gas delivery mechanism for delivering gas from the pressure vessel to a user in a breathable manner.
Abstract:
A walking assistance device, for example, a walking cane, a walking crutch, or walker includes a gas storage vessel for providing an ambulatory supply of medicinal gas for a user of the device. The gas storage vessel is formed from a plurality of polymeric hollow chamber having either an ellipsoidal or spherical shape and interconnected by a plurality of relatively narrow conduit sections disposed between consecutive ones of the chambers. The gas storage vessel includes a reinforcing filament wrapped around the interconnected chambers and interconnecting conduit sections to limit radial expansion of the chambers and conduit sections when filled with a fluid under pressure. The container system further includes a fluid transfer control system attached to the gas storage vessel for controlling fluid flow into and out of the gas storage vessel and a gas delivery mechanism for delivering gas from the gas storage vessel to a user in a breathable manner.
Abstract:
A wheeled personal transport device, for example, a wheelchair, includes a pressure vessel for providing a portable supply of medicinal gas for a user of the transport device. The pressure vessel is formed from a plurality of polymeric hollow chamber having either en ellipsoidal or spherical shape and interconnected by a plurality of relatively narrow conduit sections disposed between consecutive ones of the chambers. The pressure vessel includes a reinforcing filament wrapped around the interconnected chambers and interconnecting conduit sections to limit radial expansion of the chambers and conduit sections when filled with a fluid under pressure. The container system further includes a fluid transfer control system attached to the pressure vessel for controlling fluid flow into and out of the pressure vessel and a gas delivery mechanism for delivering gas from the pressure vessel to a user in a breathable manner.
Abstract:
A fitting with a dual locking swaging mechanism includes a projection to be inserted into the open end of an elastomeric tube. A protective sleeve is disposed over the projection. A ferrule is connected at one end thereof to a body portion of the fitting and is swaged over the tube to hold the tube onto the projection inserted into the tube. The tube is thereby held to the fitting by both frictional engagement of the tube with the projection and the ferrule and by the connection of the ferrule with the main body of the fitting.
Abstract:
A wheeled personal transport device, for example, a wheelchair, includes a pressure vessel for providing a portable supply of medicinal gas for a user of the transport device. The pressure vessel is formed from a plurality of polymeric hollow chamber having either en ellipsoidal or spherical shape and interconnected by a plurality of relatively narrow conduit sections disposed between consecutive ones of the chambers. The pressure vessel includes a reinforcing filament wrapped around the interconnected chambers and interconnecting conduit sections to limit radial expansion of the chambers and conduit sections when filled with a fluid under pressure. The container system further includes a fluid transfer control system attached to the pressure vessel for controlling fluid flow into and out of the pressure vessel and a gas delivery mechanism for delivering gas from the pressure vessel to a user in a breathable manner.