Electric heating – Metal heating – Of cylinders
Patent
1979-05-08
1982-01-05
Rubinson, Gene Z.
Electric heating
Metal heating
Of cylinders
219 1057, 219 1067, 219 1079, 219 50, 219537, 219535, 219437, 432225, 165 75, 376308, 376463, H05B 610, H05B 638, G21C 1300
Patent
active
043095836
ABSTRACT:
Heat-treating apparatus for prolonging the life of a pressure vessel formed of thermally resistant material subject to time-dependent structural changes due to neutron flux includes a heating device positionable within a pressure vessel adjacent to a wall portion thereof which is to be heat-treated; and a mounting support for the heating device including a hollow substantially cylindrical mounting member. Also included is a support for the mounting member by which the latter is insertable into and removable from the pressure vessel through an opening in the pressure vessel. The apparatus additionally includes a device for flooding the interior of the pressure vessel with protective liquid preparatory to inserting and removing the mounting member and the heating device from the pressure vessel, and a device for draining the protective liquid from the interior of the pressure vessel prior to actuation of the heating device for heating the adjacent wall portion. The mounting member is an insulating cylinder having outer circumferential contact surfaces and is positionable so that the contact surfaces form sealing contact with the inner peripheral surface of the pressure vessel in a manner that the insulating cylinder defines an annular heating space located adjacent the pressure-vessel wall portion to be treated.
REFERENCES:
patent: 2506853 (1950-05-01), Berg et al.
patent: 3403240 (1968-09-01), Henderson et al.
patent: 3809608 (1974-05-01), Katz et al.
patent: 3864543 (1975-02-01), Mohr
patent: 4158604 (1979-06-01), Cook et al.
Krauss Peter
Muller Ewald
Porner Horst
Weber Robert
Kraftwerk Union Aktiengesellschaft
Lerner Herbert L.
Leung Philip H.
Rubinson Gene Z.
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