Hydraulic Accumulator
AssigneeHydac Technology GmbH
InventorsPeter Kloft, Torsten Kusserow
Life of this patent
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Abstract
The disclosure relates to an hydraulic accumulator, in particular a diaphragm accumulator, having an accumulator housing and a separating element disposed therein, which separates two media spaces from each other, wherein a weld seam is formed by a laser or electron beam welding process without any filler materials, in that at least a part of the wall parts delimiting the transition point are melted to form the weld seam, which closes off the transition point towards the surroundings, in a manner that is free of protrusions with respect to an outer circumferential surface of a connection element.
Claims20
A hydraulic accumulator, having an accumulator housing and a separating element disposed therein, which separates two media spaces from each other, wherein the accumulator housing has at least one fluid port which opens out into an adjacent media space and which has a connection element having an annular outer circumferential surface and a fluid passage point, which connection element is connected to the accumulator housing via a weld seam and which forms a transition point when placed on the accumulator housing at the end face;
- wherein
- the weld seam is formed by a laser or electron beam welding process without any filler materials, in that at least a part of the wall parts delimiting the transition point are melted to form the weld seam, which closes off the transition point towards the surroundings, in a manner that is free of protrusions with respect to the outer circumferential surface of the connection element.
A connection element for a hydraulic accumulator, comprising at least one connector and one connection part for the purpose of connecting a fluid line or for producing a welded seam connection, respectively;
- wherein the connection part has, on its free end face facing away from the connector, starting from an outer-circumferential rim, a plane bearing surface or depression, which opens out into a fluid passage point, which passes through the connector and connection part.
A method for producing a welded joint in a hydraulic accumulator, comprising applying a laser or electron beam between a connection element and an adjacently disposed accumulator housing at right angles and circumferentially to the rim of the connection element adjacent to the accumulator housing or to a transition area between this rim and parts of the adjacently disposed accumulator housing.
Dependencies are inferred from the claim text.