초록 ▼

A highly reliable fluid cooling system is provided having a first and second cooling loop, each of which is adapted to provide cooling for separate sections of the system to be cooled. Each of the cooling loops is connected to an expansion tank at opposite sides of a partition therein. Crossover pip

A highly reliable fluid cooling system is provided having a first and second cooling loop, each of which is adapted to provide cooling for separate sections of the system to be cooled. Each of the cooling loops is connected to an expansion tank at opposite sides of a partition therein. Crossover piping is provided at the discharge side of the first and second pumps connecting the first loop to the second loop and containing a normally open valve therein. In normal operation, the first pump is adapted for pumping fluid through both the first and second cooling loops via the crossover piping and the common expansion tank. A sensor is provided in each half of the partitioned expansion tank for sensing the drop in fluid level below the partition. Either sensor causes the normally open valve in the crossover piping to close and energizes the second pump so that fluid is circulated in the second loop simultaneously with the circulation of the fluid in the first loop by the first pump, thereby providing a highly reliable dual loop cooling system which acts like one loop during normal operation and automatically separates into two separate loops when a leak is detected.

대표청구항 ▼

An inter-active dual-loop cooling system comprising: a first and second cooling loop for supplying cooled liquid to first and second sections of the system to be cooled, an expansion tank connected in said first and second cooling loops; means for partitioning said expansion tank so that it is divid

An inter-active dual-loop cooling system comprising: a first and second cooling loop for supplying cooled liquid to first and second sections of the system to be cooled, an expansion tank connected in said first and second cooling loops; means for partitioning said expansion tank so that it is divided into sections which are common to both said first and second cooling loops in normal operation and serves as separate expansion tanks for said first and second cooling loops when a predetermined amount of leakage from one of said first and second cooling loops has occurred; a first and second circulating pump associated with said first and second cooling loops; crossover piping located between said first and second cooling loops at the output side of said pumps; a normally open isolation valve located in said crossover piping for connecting said first and second loops so that one pump can provide circulation to both loops; sensing means located in each expansion tank section for responding to a predetermined amount of leakage to produce shut-off of said isolation valve and turn-on of said second pump to provide two separate cooling loops each with its own pump; and low level sensing means for responding to a further predetermined amount of leakage to shut down the associated section to be cooled and shut down the circulating pump associated with the respective cooling loop, thereby isolating the leaking cooling loop and maintaining the other cooling loop in operation.