Method and device for testing of temperature control valves in t

Thermal measuring and testing – Temperature measurement – Combined with diverse art device

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374 1, 374 3, G01K 1500, G01K 114

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active

048489255

ABSTRACT:
A portable device is provided herein for testing a plurality of thermostats in situ, each thermostat being connected to an associated one of heat sensing units which are located within a liquid coolant circulation system of a manifold of a locomotive engin. The portable device includes a double-open-ended tubular casing fitted with an electric heater, whereby liquid coolant may be heated while it flows through the tubular casing. A first conduit is connected to one open, outflow, end of the tubular casing, the first conduit being provided with a pressure safety valve, the first conduit being connectable to a liquid coolant inflow line leading from a main liquid coolant reservoir, for conducting liquid coolant liquid to the manifold. The first conduit is provided with a first portion of a first, quick-connect coupling. A second conduit is connected to one inflow open end of the tubular casing, the second conduit being provided with a temperature gauge, and with a first portion of a second quick-connect coupling. Finally, a hose is connected to the second conduit by means of a second portion of the second quick-connect coupling. That hose is connectable to a liquid coolant outflow line for conducting liquid coolant from the manifold of a locomotive engine. Thus, a device is provided which may be disposed in the coolant liquid circulation system of the locomotive engine to provide a circulating flow of a confined, small amount of electrically-heated liquid coolant between the manifold and the portable device, to test the accuracy and operability of the plurality of thermostats.

REFERENCES:
patent: 2026079 (1935-12-01), White et al.
patent: 2653470 (1953-09-01), Couper
patent: 2729095 (1956-01-01), Greer
patent: 2854844 (1958-10-01), Howell
patent: 3067604 (1962-12-01), Brunson
patent: 3347085 (1967-10-01), Harris
patent: 3370454 (1968-02-01), Flores
patent: 3557565 (1971-01-01), Kissel
patent: 3757207 (1973-09-01), Hire
patent: 4381744 (1983-05-01), Terry
patent: 4702620 (1987-10-01), Ford

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