Heat exchange – With alarm – indicator – signal – register – recorder – test or...
Patent
1986-02-07
1987-07-28
Davis, Jr., Albert W.
Heat exchange
With alarm, indicator, signal, register, recorder, test or...
165 76, F28F 700
Patent
active
046826475
ABSTRACT:
An indicator device is disclosed for indicating that a heat exchanger has been disassembled, cleaned, inspected, reconditioned and subsequently reassembled and rebrazed. The device includes an elongate housing which defines an inlet and an outlet port. A first and a second tube plate are spaced axially within the housing and a plurality of heat exchange tubes extend through and between the plates. A first seal is disposed between the plates and the tubes for sealing the tubes relative to the plates and a second seal is disposed between the tube plates and the housing for sealing the tube plates within the housing. An elongate flexible metallic strip having a first and a second end is threaded through one port and around at least one of the tubes and back through the same or opposite port and an indicator seal extends around the first and second ends of the flexible strip for sealingly connecting together the ends of the flexible strip for indicating that the heat exchanger has been disassembled, cleaned, inspected, reconditioned and subsequently reassembled and rebrazed.
REFERENCES:
patent: 2047223 (1936-07-01), Prickett
patent: 3116394 (1963-12-01), Baxton
patent: 3267361 (1966-08-01), Maddox
Davis Jr. Albert W.
Smith Randolph A.
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