Abstract:
There is provided an arrangement and a method for handling a load for isostatic pressure treatment in a high-pressure arrangement. The arrangement comprises a transportation unit comprising at least one track for transporting the load into a treatment position for isostatic pressure treatment of the load from a working space outside the high-pressure arrangement. Furthermore, the transportation unit is further arranged for transporting the load from the treatment position to the working space after pressure treatment of the load. The arrangement further comprises a partition plane arranged at least partially above the high-pressure arrangement, wherein the working space is provided above the partition plane. The partition plane is arranged to shield the working space from the high-pressure arrangement in the event of a gas leakage of the high-pressure arrangement.
Abstract:
The present invention relates to an arrangement for treatment of articles by hot isostatic pressing. The pressing arrangement for treatment of articles by hot pressing comprises a pressure vessel including: a furnace chamber comprising a heat insulated casing and a furnace adapted to hold the articles. The furnace chamber is at least partly encompassed by at least one substantially cylindrical heat insulating portion. The substantially cylindrical heat insulating portion comprises a supporting structure and an insulating layer provided on said supporting structure. The supporting structure is provided with a number of slits separated by segments having a vertical extension over at least a part of said supporting structure. The segments are movably attached to support means allowing them to move back and forth in a radial direction.
Abstract:
The present invention relates to an arrangement for treatment of articles by hot isostatic pressing. The pressing arrangement for treatment of articles by hot pressing comprises a pressure vessel including: a furnace chamber comprising a heat insulated casing and a furnace adapted to hold the articles. The furnace chamber is at least partly encompassed by at least one substantially cylindrical heat insulating portion. The substantially cylindrical heat insulating portion comprises a supporting structure and an insulating layer provided on said supporting structure. A number of slits having a vertical extension over at least a part of said supporting structure is arranged in the supporting structure. In preferred embodiments of the present invention, vertically elongated segments separated by respective slits having smaller curvature than a substantially cylindrical upper portion of the heat insulating portion are arranged in the supporting structure.
Abstract:
The present invention relates to a pressing arrangement for treatment of articles by hot pressing and in particular to a pressing arrangement for hot isostatic pressing of containers holding substances. The method comprises: placing containers including the substance in a load compartment in the furnace and loading a pressure medium into the pressure vessel and substantially all pressure medium flowing out from the furnace chamber (18) passes at least one substance capturing module, which may include the walls of the guiding passage, at least one condensation element (35) in the guiding passage, filters (41, 43) arranged in the guiding passage, before making contact with the pressure vessel including the top and bottom closures (8, 9).
Abstract:
A pressure vessel comprising a pressure chamber (5) arranged for accommodating a pressure medium, comprising at least one cylinder segment (2) arranged for longitudinal connection to form a cylinder body (1), whereby a joint (7) arranged for an interconnection is formed at adjacent longitudinal edges (6) of the at least one cylinder segment. The pressure vessel further comprises pre-stressing means (20) provided around an outer envelope surface (4) of the cylinder body for radially pre-stressing the cylinder body and for at least partly decreasing a gap (11) extending along at least a portion of each joint between adjacent longitudinal edges of the at least one cylinder segment.
Abstract:
The present invention relates to a pressure vessel and a pressing arrangement comprising such a pressure vessel, for use at high-pressure pressing. The pressure vessel comprises a pressure chamber arranged for accommodating a pressure medium is provided. The pressure vessel comprises one or several cylinder segment/segments arranged to form a pressure vessel cylinder surrounding the pressure chamber, whereby a joint is formed at adjacent longitudinal edges of the cylinder segment/ segments. Prestressing means are provided around an outer envelope surface of the pressure vessel cylinder for radially prestressing the pressure vessel cylinder. Each joint at adjacent edges of the cylinder segment or segments has a continuous extension along the longitudinal length of the pressure vessel cylinder.
Abstract:
The present invention relates to an arrangement for treatment of articles by hot pressing and, in particular, by hot isostatic pressing. In particular, the present invention relates to a pressing arrangement for treatment of articles by hot pressing, and preferably hot isostatic pressing, capable of providing a controlled, rapid cooling rate. The pressing arrangement comprises a pressure vessel including a furnace chamber comprising a heat insulated casing and a furnace adapted to hold the articles. At least one cooling circuit is arranged on an outside of the pressure vessel, the cooling circuit comprising a coolant and being arranged to enable the coolant to flow along a central portion of an outer wall of the pressure vessel. The pressure vessel is arranged with a non-uniform wall thickness, where the vessel wall is thickest at upper and lower end portions of the pressure vessel.
Abstract:
The present invention relates to an arrangement for treatment of articles by hot pressing and in particular by hot isostatic pressing. The pressing arrangement includes a pressure vessel and a furnace chamber adapted to hold articles, which furnace chamber is provided inside the pressure vessel. At least one guiding passage communicating with the furnace chamber forms an outer cooling loop, wherein the pressure medium in a part of the outer cooling loop is guided in proximity to pressure vessel walls and the top end closure before it re-enters into the furnace chamber. Further, a guiding channel element is located in the at least one guiding passage forming the outer cooling loop is arranged with at least one pressure medium channel for guiding the pressure medium from a central opening of the heat insulated casing radially and circumferentially towards a lateral wall of the pressure cylinder. The at least one pressure medium channel has a substantially constant cross-sectional area in a flow direction of the pressure medium.
Abstract:
Un método para proporcionar un cambio de presión entre dos estados de presión: un estado de baja presión y un estado de alta presión en el margen de 4.000 bares a 15.000 bares, en un vaso (40) de presión de un dispositivo de presión isostático de alta presión en el que se usa un medio de presión líquido para generar la presión, estando caracterizado el método por las operaciones de: transferir medio de presión líquido entre unos primeros medios (42) de cambio de presión que comprenden un sistema de bombeo hidráulico, y el vaso (40) de presión, cambiando de ese modo la presión en el vaso (40) de presión desde uno de dichos dos estados de presión a un estado de presión intermedio que tiene un valor comprendido entre las presiones de los dos estados y cuyo valor es de alrededor de 2.000 bares o superior; y transferir medio de presión líquido entre unos segundos medios (44) de cambio de presión, que comprenden un intensificador de carrera única, y el vaso (40) de presión, cambiando de ese modo la presión en el vaso (40) de presión de dicho estado de presión intermedio al otro uno de dichos dos estados de presión.
Abstract:
A high-pressure press includes a pressure vessel surrounded by a force-absorbing press frame. The high-pressure press also includes a detection structure for detecting changes in length of at least one column comprised in the press frame, the changes in length depending on the pressure inside the pressure vessel. The detection structure includes a limit switch, which is adapted to detect if the change in length of the column has reached a threshold value and, in that case, interrupt a pressing operation in progress and reduce the pressure inside the pressure vessel.