FIELD: machine building.
SUBSTANCE: invention relates to machine building, namely, to test benches of compressors. Test bench is characterized by that heat exchanger (6) contained in closed pneumatic line (14) is a cryogenic heat exchanger (6), one input of which is connected to outlet of turbine (2), which is process turbine (2), and one output is with compressor (4), which is tested compressor (4). Other input of the cryogenic heat exchanger (6) is connected to the cold source and is configured to fill the cryogenic heat exchanger (6) with a cryoagent, the stand additionally comprises process expander (13) entering the second closed pneumatic manifold (16) and kinematically connected to tested compressor (4), and pneumatically to process compressor (8) and air cooler (10) of second closed pneumatic manifold (16).
EFFECT: technical result consists in providing the possibility of tests of blade compressors, and in excluding the probability of freezing of lines when testing bladed compressors, and, consequently, obtaining more reliable characteristics.
7 cl, 1 dwg
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