FIELD: engines and pumps.
SUBSTANCE: coupling device between nozzle and supply chamber for supply of cooling fluid medium to at least one injector of cooling fluid medium in turbomachine comprises at least one bush and also retention devices for bush retention in axial direction. Bush is installed in sliding manner by means of its open axial ends in openings in nozzle wall and in wall of supply chamber. Retention devices comprise support facility including external annular collar that protrudes from cylindrical external surface of bush between axial ends of bush and at the distance from mentioned ends. External annular collar is located between nozzle wall and supply chamber wall and is intended for support against these walls and prevention of bush withdrawal from holes in these walls during operation of turbomachine.
EFFECT: provides for simple design of coupling device between nozzle and supply chamber, and also reduces losses inside supply chamber upstream nozzle.
11 cl, 7 dwg
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