TEST BENCH Russian patent published in 2014 - IPC F15B19/00 

FIELD: machine building.

SUBSTANCE: test bench comprises an oil system consisting of two parts hermetically divided from each other but coupled via an oil-to-oil heat exchanger (21) set in the first part. The first part comprises an oil tank (1) with accessories for filling and draining, pressure, drainage and discharge oil main lines, an oil pump (10) with electric drive, an air cooler for oil (17), a block of remote oil filters (25) with switching equipment and with two sections (29) and (30), an oil flow metre (39), a reduction valve (38), a distributor (46) connected to a load mechanism (51), devices for discharge of oil and oil and air mixture respectively (19) and (63) to the oil tank (1). The first part provides the test bench reducers (52), (53), (54), (55), (56) and the load mechanism (51) with cooled and filtered oil as well as provides for cooling of oil used in the second part of the system. The second part of closed type comprises an oil main line (65) of closed circulation type, a flow metre (66) and two thermocouples set outside on the reducer being tested (64).

EFFECT: testing of angular helicopter gearbox under the conditions maximally similar to the operational ones at minimal power consumption.

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