PROCEDURE FOR SUPPLY OF GASEOUS SUBSTANCE INTO CAVITY OF PRESSURISED UNIT WITH PRESSURISATION OF CAVITY AND FIXING DEVICE OF PRESSURISED UNIT Russian patent published in 2011 - IPC F04D13/06 

FIELD: machine building.

SUBSTANCE: procedure for supply of gaseous substance into cavity 7 of pressurised unit with pressurisation of this cavity consists in communication of connecting pipe 3 with main 11 of supply, in assembly and fixation of cover 2 relative to case 1 in intermediate position when channel of connecting pipe 3 located between two packing rings and cavity 7 are intercommunicated, while one packing ring is set between case 7 and cover 2. Cavity 7 is filled with gaseous substance and is closed. Cover 2 is transferred from an intermediate position into a regular one when two packing rings are installed between case 1 and cover 2. Connecting pipe 3 is disconnected from main 11 and cover 2 is fixed in a regular position. A fixing device is installed into the unit before fixation of cover 2 relative to case in an intermediate position. Cover 2 is transferred to a stop into "П"-shaped plates 16 of the fixing device, while cover 2 is axially transferred into a regular position upon removal of plate 16.

EFFECT: raised processability and reliability by avoiding possible warp and deformation of cover in intermediate position at gas pressurisation.

2 cl, 4 dwg