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1. (WO2018197174) METHOD FOR CONTROLLING A PLURAL STAGE COMPRESSOR
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Pub. No.: WO/2018/197174 International Application No.: PCT/EP2018/058704
Publication Date: 01.11.2018 International Filing Date: 05.04.2018
IPC:
F04D 17/12 (2006.01) ,F04D 17/14 (2006.01) ,F04D 27/02 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
17
Radial-flow pumps specially adapted for elastic fluids, e.g. centrifugal pumps; Helico-centrifugal pumps specially adapted for elastic fluids
08
Centrifugal pumps
10
for compressing or evacuating
12
Multi-stage pumps
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
17
Radial-flow pumps specially adapted for elastic fluids, e.g. centrifugal pumps; Helico-centrifugal pumps specially adapted for elastic fluids
08
Centrifugal pumps
10
for compressing or evacuating
12
Multi-stage pumps
14
with means for changing the flow-path through the stages, e.g. series/parallel
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
27
Control, e.g. regulation, of pumps, pumping nstallations or pumping systems specially adapted for elastic fluids
02
Surge control
Applicants:
CRYOSTAR SAS [FR/FR]; 2 Rue de I'ndustrie 80331 Paris, FR
Inventors:
DARRY, Marina; FR
HELIOT, Cyril; FR
Agent:
RICHMOND, Sarah; GB
Priority Data:
17168535.727.04.2017EP
Title (EN) METHOD FOR CONTROLLING A PLURAL STAGE COMPRESSOR
(FR) PROCÉDÉ DE COMMANDE DE COMPRESSEUR MULTI-ÉTAGÉ
Abstract:
(EN) Method for controlling a plural stage compressor comprising at least a first stage (10), a second stage (20) and a first inter-stage line (12) between the first stage (10) and the second stage (20), comprising the steps of: a- measuring the temperature at the inlet of the compressor, b- measuring the ratio between the outlet pressure (Pout) and the inlet pressure (Pin) of the first stage (10) of the compressor, c- calculating a coefficient (Ψ) based at least on the value of the inlet temperature (Tin) and on the measured pressure ratio (Pout/Pin), d- if the calculated coefficient (Ψ) is in a predetermined range, acting on a control valve (70; 76; 92) mounted in a line (4; 8) supplying the inlet of the first stage (10) of the compressor or in a gas recycle line (74) which opens into the first inter-stage line (12).
(FR) L'invention concerne un procédé de commande d'un compresseur multi-étagé comprenant au moins un premier étage (10), un second étage (20) et une première conduite entre étages (12) entre le premier étage (10) et le second étage (20), le procédé consistant : a) à mesurer la température au niveau de l'entrée du compresseur, b) à mesurer le rapport entre la pression de sortie (Pout) et la pression d'entrée (Pin) du premier étage (10) du compresseur, c) à calculer un coefficient (Ψ) en fonction au moins de la valeur de la température d'entrée (Tin) et du rapport de pression mesuré (Pout/Pin), d) si le coefficient calculé (Ψ) est compris dans une plage prédéfinie, à agir sur une soupape de commande (70; 76; 92) monté dans une conduite (4; 8) alimentant l'entrée du premier étage (10) du compresseur ou dans une conduite de recyclage de gaz (74) communicant avec la première conduite entre étages (12).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)