Head for conducting heat-exchange fluid to rotating system

Details Head for conducting heat-exchange fluid to rotating system Head for conducting heat-exchange fluid to rotating system

1997-05-09

1998-07-14

Ferensic, Denise L.

Heat exchange

Movable heating or cooling surface

Rotary drum

165 89, 492 46, F28D 1102

Patent

active

057789711

ABSTRACT:
A rotary steam-heated system and a source of steam under superatmospheric pressure are connected together by a coupling having a tubular shaft extending along and rotatable about an axis and having an outer end supporting the system and an inner end. A housing engaged around the inner end forms therewith a chamber connected to the source and opening into the tubular shaft so that steam from the source can flow through the chamber into the shaft and therethrough to the system. A bearing supports the shaft in the housing and a primary seal closing an outer side of the chamber is engaged between the housing and the shaft. A secondary seal between the primary seal and the bearing is engaged between the housing and the shaft and the housing forms an annular compartment around the shaft between the primary and secondary seals and is formed with at least one passage communicating between the compartment and the chamber so that some of the steam in the chamber can flow via the passage from the chamber into the compartment. The housing is cooled at the compartment and to condense steam therein so that the condensed steam lubricates the primary and secondary seals.

REFERENCES:
patent: 1953525 (1934-04-01), Young
patent: 2331615 (1943-10-01), Meyer
patent: 3638606 (1972-02-01), Pieper et al.
patent: 3704669 (1972-12-01), Christoff
patent: 4230928 (1980-10-01), Janssen
patent: 4924817 (1990-05-01), Seelen
patent: 4965920 (1990-10-01), Smith

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