Abstract:
Accumulateur hydraulique à vessie du type constitué par une enceinte creuse (1) résistante à la pression à l'intérieur de laquelle est disposée une vessie déformable (2) séparant le volume intérieur de ladite enceinte (1) en deux parties l'une (3) recevant le liquide hydraulique, l'autre (5) étant gonflée d'un gaz sous pression, ladite vessie (2) étant munie à son extrémité sommitale d'une butée anti-extrusion (8) caractérisé par le fait que ladite vessie est constituée par l'assemblage d'au moins deux vessies (20,21).
Abstract:
An accumulator installed in the piping of equipment and temporarily accumulating a pressure in a pipe flow path or absorbing, by a pump, the pulsation of a fluid pressure generating in the piping, wherein a bladder (3) is formed in a laminated structure having, for example, a center elastic layer (321), gas shielding layers (322) on the outside thereof, external elastic layers (323) on the outside of the gas shielding layers and the center elastic layer (321), gas shielding layers (322), and external elastic layers (323) are formed of polyamide resin, and the gas shielding layers (322) are formed so that the bending elastic modulus thereof is higher than the bending elastic moduli of the center elastic layers (321) and external elastic layers (323), whereby the durability of the bladder (3) against a repeated bending and stretching operation in the low temperature environment of 0 DEG or below can be increased and the volume of cushion gas in a gas chamber can be effectively prevented from decreasing.
Abstract:
The invention relates to machine building and may be used for the starting fuel expulsion at the liquid-propellant rocket engine start. A tank comprises a structural envelope made in a form of hemisphere with a tube connection having a ring groove in its surface. A tightening ring of the structural envelope. An elastic diaphragm made in a form of hemisphere integrated with a cylinder provided with an end projection that fits into the ring groove. A bottom is made in a form of a sphere part. A thin-walled ring with a shoulder is introduced that is mounted between the tightening ring and elastic diaphragm in the place of its end projection location. The tube flange is provided with an end projection. The tightening ring is equipped with a lateral flange providing a possibility for the thin-walled ring shoulder tightening by it to the ring projection of the tube flange. The external surface of the tightening ring and internal surface of the tube flange are made tapered in the direction from the ring groove to the hemisphere of the structural envelope above the ring groove. The bottom is made to be hollow and its internal surface is provided with holes. A splitter is introduced that is mounted in the bottom space.
Abstract:
The invention relates to a hydraulic fluid accumulator comprising a housing (1), whose interior is subdivided into three chambers (2, 3, 4), whereby the first chamber (2) is filled with a gas and separated from the second chamber (3) by a first media separation element (6). Said second chamber is filled with a liquid and is separated from the third chamber (4), which is also filled with a liquid and is connected to a hydraulic line (5), by a second media separation element (7). To guarantee an effective separation of the media within the hydraulic fluid accumulator and thus a significant increase in its functional safety, the invention is characterized in that the second media separation element (7) is embodied by a metal piston (8, 80) which delimits a space that can be deaerated (9, 90) in the housing (1).
Abstract:
Derartige Schwingungsdämpfer (1) sind typischerweise aus einem in einem Hydraulikflüssigkeit durchströmten Gehäuse (2) angeordneten Membrankörper (3) aufgebaut. Der Membrankörper (3) besteht aus einem Grundkörper (7), über den eine elastische gasdichte Membran (4) aufgezogen ist. Die Membran (4) hat die Funktion, zwei Kammern gasdicht voneinander zu trennen. Die eine Kammer ist mit dem Hydrauliksystem verbunden und wird dadurch mit Hydraulikflüssigkeit gespeist. Die andere Kammer ist mit Luft gefüllt, das annähernd Atmosphärendruck aufweist. Ist die Hydraulikflüssigkeit mit Druckpulsen beaufschlagt, können diese Druckpulse mittels der elastischen Membran, die sich gegen die atmende Luftkammer bewegt, gedämpft werden.
Abstract:
An in-line, flow-through accumulator for use in a hydraulic circuit has a first hollow right circular cylinder (68) sealed at each end to define a housing. A second hollow right circular cylinder (80) is concentrically located within the housing and extends through both ends thereof. The second cylinder defines a annular volume (96) within the housing and has at least one port (98) proximate one end thereof to provide fluid communication through the cylinder and into the annular volume (96). A annular piston (100) is disposed within the annular volume subdividing the volume into a first and a second chamber, the first chamber (106) having a gas at a predetermined pressure equal to approximately one-half the operating pressure of the hydraulic circuit. The second chamber (102) is in fluid communication with the hydraulic circuit through the port (98) in the second cylinder. Appropriate fluid couplings may be provided at each end of the housing for attachment to a hydraulic circuit.