Abstract:
A pressure accumulator includes a housing having a housing cavity, a piston axially displaceable in the housing cavity between a first final position and a second final position and having a pressure surface which together with a wall of the housing cavity delimits at least partially a reservoir connectable to an ICE consumer in a fluid-conveying manner, an energy store cooperating with the piston, the piston being displaceable against the force of the energy store from the first final position into the second final position in that the reservoir is acted on by pressure using a pressure medium, and a locking device for locking the piston in the second final position. A locking tube is connected to the piston and supported within the housing in an axially shiftable manner, and lockable at an end of the housing facing away from the reservoir with the aid of a locking pin.
Abstract:
Cylindrical pressure vessel with an internal body enclosed by an external body, with a cylindrical section closed by end caps and with the internal body and external body kept separate from each other to avoid a transfer of shear forces, wherein at least one end cap is connected only with the external body and contacts, with an overlap section intruding into the internal body, the inside surface of the internal body, with a seal arranged in the overlap section that contacts an interior circumferential surface of the internal body, and with at least one recess serving as a defined leakage path in case of an expansion of the external body relative to the internal body being arranged on the side of the seal facing away from the interior chamber, in the interior circumferential surface of the internal body that encloses the overlap section of the end cap.
Abstract:
An accumulator for a hydraulic system includes a polymer liner defining a cavity. A metal bellows assembly is housed in the cavity and separates the cavity into a first chamber and a second chamber, with the first and second chambers isolated from one another by the bellows assembly. A composite shell substantially encases the liner. The liner and shell are configured so that the first chamber receives hydraulic fluid from and delivers hydraulic fluid through an opening in the liner and the shell as the bellows assembly expands and compresses due to pressurized gas in the second chamber balancing fluid pressure changes in the first chamber. In one embodiment, the metal bellows assembly includes hydroformed bellows.
Abstract:
A reduced weight and repairable piston accumulator. The accumulator includes a load bearing metallic cylinder with removable end caps secured thereto with slip flanges for allowing repairability and for achieving the required cycle life. The cylinder serves as the surface on which the piston slides and is designed such that it sustains the axial stress induced by pressurization of the accumulator. A composite over wrapping is designed such that it sustains the stress in the hoop (radial) direction. A stress transitioning bushing can be provided for transitioning hoop stresses between the overwrap and the slip flange. When combined with the cylinder, the fibers of the composite wrap will not be placed in shear and thus will not fatigue in the same manner as some prior art designs.
Abstract:
Apparatus for attaching internal parts to the interior of a pressure vessel having an inner lining of uncured rubber includes a rigid fastener, preferably an internally threaded nut, rigidly secured over an opening through the wall of the vessel and the rubber lining. A rigid bolt is threaded through the nut from the inside of the vessel so that a lateral shoulder on the bolt is tightened against the rubber lining. A layer of uncured rubber is mounted over the shoulder, and the layer is cured when the inner lining is being cured to embed the shoulder in the rubber and seal the bolt against leakage. Internal parts are attached to the portion of the bolt inside the vessel, and the structural load applied to the bolt by the internal parts is transmitted to the wall of the vessel through the rigid bolt and nut.
Abstract:
유압 시스템용 어큐물레이터는 캐비티를 규정하는 중합체 라이너를 포함한다. 금속 벨로우즈 어셈블리는 캐비티 내에 실장되고 캐비티를 제 1 챔버 및 제 2 챔버로 분리하며, 제 1 및 제 2 챔버들은 서로 벨로우즈 어셈블리에 의해 격리된다. 복합 쉘은 실질적으로 라이너를 둘러싼다. 라이너 및 쉘은 벨로우즈 어셈블리가 제 1 챔버 내의 유체 압력 변화들의 균형을 맞추는 제 2 챔버 내의 가압된 가스로 인해 팽창 및 수축할 때, 제 1 챔버가 라이너 및 쉘 내의 개구를 통하여 유압 유체를 수용하고 상기 개구를 통해 유압 유체를 전달하도록 구성된다. ㄴ하나의 실시예에서, 금속 벨로우즈 어셈블리는 하이드로폼드 벨로우즈들을 포함한다.
Abstract:
Ein Verfahren zum Herstellen von Wandteilen (24) eines Gehäuses bei Druckbehältern mittels eines 3 D-Druckverfahrens, bei dem schichtweise ein Materialauftrag unter Bildung des jeweiligen Wandteils (24) erfolgt, ist dadurch gekennzeichnet, dass bei Wandteilgeometrien (28), die zu den Materialauftrag behindernden Verwerfungen (44) führen, die Schichtdicke bei dem Materialauftrag derart groß gewählt wird, dass die jeweilige Verwerfung (44) vermieden wird und dass die Bildung insoweit kritischer Wandteilgeometrien (28) frei von Stützteilen vorgenommen wird.
Abstract:
Ein Hydrospeicher, insbesondere Niederdruckspeicher, mit einem Speichergehäuse (2) und einem darin angeordneten Trennelement, insbesondere in Form einer Speicherblase (22), die zwei Medienräume (3, 5) voneinander trennt, ist dadurch gekennzeichnet, dass das Speichergehäuse (2) aus mindestens zwei Schalen (8, 10) gebildet ist, die an ihren einander zugewandten Endbereichen (24) miteinander verschweißt sind.
Abstract:
Die Erfindung bezieht sich auf einen hydropneumatischen Speicher mit einem Speichergehäuse (1), dessen Innenraum durch einen verschiebbaren Kolben (11) oder eine flexible Membran in einen mit einer Flüssigkeit gefüllten Flüssigkeitsraum (12) und einen mit einem unter einem Druck stehenden Gas gefüllten Gasraum (13) besteht. Die Außenwand (16) des Speichergehäuses (1) ist ganz oder teilweise von einer körperschalldämpfenden und/oder luftschalldämmenden Schicht (18) oder einem körperschalldämpfenden und/oder luftschalldämmenden Schichtensystem (18) umhüllt oder enthält eine körperschalldämpfende und/oder luftschalldämmende Schicht und/ oder ein körperschalldämpfendes und/oder luftschalldämmendes Schichtensystem.
Abstract:
An accumulator assembly (10) comprises an accumulator cylinder (12) formed of a cylindrical, gas-impermeable shell (18) and a cylindrical gas-impermeable sleeve (20) disposed within and substantially concentric with the shell (18), An interstitial space (30) is formed between the sleeve (20) and the shell (18). A piston (22) slidably is disposed within the sleeve (20), the piston (22) separating an interior of the sleeve (20) into a first chamber (29) configured to contain a compressed gas, and a second chamber (31) configured to contain a pressurized fluid. A pair of removable axial closures (14, 16) retained to the gas-impermeable sleeve (20) at opposing ends and sealingly engaged with corresponding opposing ends of the gas-impermeable shell (18) is configured to provide maximum resistance to the tensional stress of the sleeve (20).