Pump/heat exchanger

Details Pump/heat exchanger Pump/heat exchanger

1978-01-20

1980-08-12

Davis, Jr., Albert W.

Heat exchange

With alarm, indicator, signal, register, recorder, test or...

Remotely controlled inspection means

73 405R, 73 407, 165 70, F28F 1100

Patent

active

042168210

ABSTRACT:
A pump/heat exchanger assembly has tubes with double walls, inner and outer respectively, the outer wall being provided with inner longitudinal grooves. The exchange occurs between a primary fluid circulating outside the said tubes and a secondary fluid circulating inside the said tubes. A plurality of the double-walled tubes are arranged in an annular space, each tube consisting of a plurality of interconnected tube sections, having horizontal curved portions and elbowed portions, the tube sections being joined together at the elbowed portions. At least one leakproof annular chamber is provided outside the annular space and connected thereto. Leaks in the said tubes, are detected by injecting an inert gas, under a given pressure, into the said annular chambers, and comparing the pressure of the gas in the chamber with a maximum and a minimum pressure.

REFERENCES:
patent: 3090433 (1965-06-01), Amorosi et al.
patent: 3670810 (1972-06-01), Allen

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