EP 3129605 A1 20170215 - FLUID ENERGY MACHINE HAVING A TANDEM DRY GAS SEAL
Title (en)
FLUID ENERGY MACHINE HAVING A TANDEM DRY GAS SEAL
Title (de)
FLUIDENERGIEMASCHINE MIT TANDEM-TROCKENGASDICHTUNG
Title (fr)
MACHINE À ÉNERGIE FLUIDIQUE COMPORTANT UN JOINT À GAZ SEC TANDEM
Publication
Application
Priority
- DE 102014211690 A 20140618
- EP 2015063399 W 20150616
Abstract (en)
[origin: WO2015193269A1] The invention relates to a fluid energy machine (FEM) and to a method for operating said machine, wherein a tandem dry gas seal (TDGS) comprises an inner seal (SLI) and an outer seal (SLO), wherein the outer seal (SLO) has a first sealing-gas supply (SGS1), wherein the shaft seal (SLS) has a primary vent (PV). In order that the machine operates reliably and with little sealing gas, the first sealing-gas supply (SGS1) according to the invention has a first control element (V1) for controlling the sealing gas, wherein the primary vent (PV) has a second control element (V2) for controlling a primary venting fluid (PVF), wherein the first control element (V1) and the second control element (V2) are matched to each other, that, in a first step, initially the open position of the second control element (V2) is controlled in order to control the first pressure (P1) and the first control element (V1) is closed and, in a second step, if the first pressure (P1) remains less than the first set pressure (P1SET) while the second control element (V2) is in the closed state, the first control element (V1) is opened while the second control element (V2) is in the closed state and the open position of the first control element (V1) is controlled in order to control the first pressure (P1) until the first pressure (P1) is adjusted to the first set pressure (P1SET) and, in a third step, if the first pressure (P1) remains greater than the first set pressure (P1SET) while the first control element (V1) is in the closed state, the first step is initiated again.
IPC 8 full level
F01D 11/06 (2006.01); F04D 29/10 (2006.01); F04D 29/12 (2006.01)
CPC (source: CN EP RU US)
F01D 11/06 (2013.01 - CN EP RU US); F04D 17/10 (2013.01 - US); F04D 27/002 (2013.01 - US); F04D 29/053 (2013.01 - US); F04D 29/10 (2013.01 - RU); F04D 29/104 (2013.01 - CN EP US); F04D 29/124 (2013.01 - CN EP US); F04D 29/284 (2013.01 - US); F04D 29/4206 (2013.01 - US); F05D 2270/301 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102014211690 A1 20151224; CN 106460541 A 20170222; CN 106460541 B 20181218; EP 3129605 A1 20170215; RU 2016149625 A 20180621; RU 2016149625 A3 20180621; RU 2658721 C2 20180622; US 10337520 B2 20190702; US 2017191486 A1 20170706; WO 2015193269 A1 20151223
DOCDB simple family (application)
DE 102014211690 A 20140618; CN 201580032946 A 20150616; EP 15730464 A 20150616; EP 2015063399 W 20150616; RU 2016149625 A 20150616; US 201515314592 A 20150616