Sawsan311
Chemical
- Jun 21, 2019
- 303
Dear All,
I would like to inquire on the gas balance within the same compressor section and which involves an external piping from the high pressure stages to the low pressure stages.. does this balance line contributes in the leakages across the labyrinth within the compressor stage and hence for multistage compressor located within the same casing.. we would have a combined settle-out pressure. Additionally, does this seal balance line serves as an additional measure for balancing the thrust of the machine and hence reduces the thrust load on the balance piston in (compound arrangements) or division walls in back to back arrangements?
My other question is that for measuring the differential pressure between the seal gas port at the driven and non driven end of the compressors, will the other end of the measurement be attached to the above balance line?
Last question, for a two stage compressor located within two separate casing each, I saw on the P&ID additional line similar to the gas balance only in the 2nd stage .. but is labelled as seal balance.. do you think is an external seal stream where the source of process gas from intermediate crossover is taken to seal the casing of the 2nd stage?
Thanks
regards,
I would like to inquire on the gas balance within the same compressor section and which involves an external piping from the high pressure stages to the low pressure stages.. does this balance line contributes in the leakages across the labyrinth within the compressor stage and hence for multistage compressor located within the same casing.. we would have a combined settle-out pressure. Additionally, does this seal balance line serves as an additional measure for balancing the thrust of the machine and hence reduces the thrust load on the balance piston in (compound arrangements) or division walls in back to back arrangements?
My other question is that for measuring the differential pressure between the seal gas port at the driven and non driven end of the compressors, will the other end of the measurement be attached to the above balance line?
Last question, for a two stage compressor located within two separate casing each, I saw on the P&ID additional line similar to the gas balance only in the 2nd stage .. but is labelled as seal balance.. do you think is an external seal stream where the source of process gas from intermediate crossover is taken to seal the casing of the 2nd stage?
Thanks
regards,