POWER MACHINE WITH FLUID MEDIUM WITH “TANDEM” TYPE DOUBLE DRY GAS SEAL Russian patent published in 2018 - IPC F01D11/06 F04D29/10 

FIELD: machine building.

SUBSTANCE: invention relates to the fluid energy machine (FEM) and to the such a machine operating method, wherein it includes the “Tandem” type (TDGS) dual dry gas seal, an inner seal (SLI) and outer seal (SLO), wherein the outer seal (SLO) includes the first seal gas supply (SGS1), wherein the shaft seal (SLS) includes the primary output (PV). For the purpose of reliable and with low seal gas consumption machine operation, the first seal gas supply (SGS1) includes first controller (V1) for the seal gas controlling, wherein the primary output (PV) includes the second controller (V2) for the primary process fluid (PVF) controlling, wherein the first controller (V1) and the second controller (V2) are set together in such a way, that to control, at the first stage, first the second valve (V2) opening to control the first pressure (P1) and close the first valve V1, at the second stage to open, when the second valve (V2) is closed the first pressure (P1) is less than the first predetermined pressure (P1SET), first controller (V1) with the second controller (V2) closed and control the first controller (V1) opening position for the first pressure (P1) controlling until the first pressure (V1) reaches the first preset pressure (P1SET) and at the third stage, when with the first regulator (V1) closed the first pressure (P1) remains greater than the first preset pressure (P1SET), starting the first stage again.

EFFECT: increasing in the machine operation reliability, reduction of the seal gas consumption.

19 cl, 2 dwg