Apparatus for the expansion of tube ends inside of a tube plate

Details Apparatus for the expansion of tube ends inside of a tube plate Apparatus for the expansion of tube ends inside of a tube plate

B - Operations, Transporting

21

D

26/78, 138/77.1

B21D 22/10 (2006.01) B21D 39/06 (2006.01) B21D 39/20 (2006.01) F15B 1/02 (2006.01)

Patent

CA 1037358

Abstract of the Disclosure An apparatus for the expansion of tube ends inside of a tube plate by means of a probe insertable in the respect- ive tube ends, the probe forming an annular space with the tube member to be widened by means of two seals spaced from one another, a pump operatively feeding the annular space with a pressure medium for the expansion, and a pressure intensifier for bringing the pressure medium to a required pressure. A medium separator is connected via a back-pressure valve to a secondary- sided space of a primary-sided hydraulic oil driven pressure intensifier. A piston displaceably disposed in the medium separator is biased by a return spring in the medium separator, and the pump feeds the hydraulic oil displacing the piston against the restoring force of the return spring for the filling of the secondary space of the pressure intensifier with an operating medium. The operating medium flows from an operating medium-supply container and another back-pressure valve to the secondary side of the medium separator. - 1 -

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