(12) International Application Status Report

Received at International Bureau: 14 March 2013 (14.03.2013)

Information valid as of: 06 August 2013 (06.08.2013)

Report generated on: 18 September 2019 (18.09.2019)

(10) Publication number: (43) Publication date: (26) Publication language:
WO 2013/12457829 August 2013 (29.08.2013) French (FR)

(21) Application number: (22) Filing date: (25) Filing language:
PCT/FR2013/05033919 February 2013 (19.02.2013) French (FR)

(31) Priority number(s): (32) Priority date(s): (33) Priority status:
1251531 (FR)20 February 2012 (20.02.2012) Priority document received (in compliance with PCT Rule 17.1)

(51) International Patent Classification:
F01D 17/06 (2006.01); F01D 17/08 (2006.01); F02K 9/48 (2006.01)

(71) Applicant(s):
SNECMA [FR/FR]; 2 Boulevard du Général Martial Valin F-75015 Paris (FR) (for all designated states)

(72) Inventor(s):
LEMAITRE, Alban; 15 place Barette F-27200 Vernon (FR)
LE GONIDEC, Serge; 50 rue de Verdun F-27200 Vernon (FR)

(74) Agent(s):
BESNARD, Christophe; Cabinet Beau De Lomenie 158 Rue de l'Université F-75340 Paris Cedex 07 (FR)

(54) Title (EN): METHOD FOR SECURING THE OPERATION OF A TURBOMACHINE
(54) Title (FR): PROCEDE DE SECURISATION DU FONCTIONNEMENT D'UNE TURBOMACHINE

(57) Abstract:
(EN): The invention relates to a method for securing the operation of a rotating assembly of a turbomachine, comprising a turbine and a rotating machine, wherein the exceeding of a predetermined speed threshold (Ws) is anticipated by repeatedly carrying out a prediction cycle during which the following steps are carried out: measuring (E1 to E5) quantities related to the operation of the turbomachine including an actual rotational speed (W0) of the rotating assembly thereof; estimating (E6, E7), from said quantities, the engine torque (Cm) and resistant torque (Cr) applied to the rotating assembly; developing (E9 to E12) a value (DC') equal to the difference between said two torques; calculating (E13) a predicted rotational speed (W1) of the rotating assembly at a given time horizon on the basis of said representative value (DC') and the actual rotational speed (W0). An action is carried out (E16) on the operation of the turbomachine in order to limit the extent to which the speed of the rotating assembly thereof is exceeded in relation to said threshold (Ws) if the predicted rotational speed (W1) exceeds this threshold (Ws).
(FR): Procédé de sécurisation du fonctionnement d'un ensemble tournant d'une turbomachine comprenant une turbine et une machine tournante, dans lequel procédé on anticipe le dépassement d'un seuil de vitesse prédéterminé (Ws) en réalisant répétitivement un cycle de prédiction au cours duquel : on mesure (E1 à E5) des grandeurs relatives au fonctionnement de la turbomachine dont une vitesse de rotation réelle (WO) de son ensemble tournant; on estime (E6, E7) à partir de ces grandeurs les couples moteur (Cm) et résistant (Cr) appliqués sur l'ensemble tournant; on élabore (E9 à E12) une valeur représentative (DC') de la différence entre ces deux couples; on calcule (E13) une vitesse de rotation de prédiction (W1) de l'ensemble tournant à un horizon de temps donné, à partir de ladite valeur représentative (DC') et de la vitesse de rotation réelle (W0). On opère (E16) une action sur le fonctionnement de la turbomachine pour limiter l'ampleur du dépassement en vitesse de son ensemble tournant par rapport audit seuil (Ws) si la vitesse de rotation de prédiction (W1) dépasse ce seuil (Ws).

International search report:
Received at International Bureau: 15 April 2013 (15.04.2013) [EP]

International Report on Patentability (IPRP) Chapter II of the PCT:
Not available

(81) 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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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
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 (OAPI) : BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG
African Regional Intellectual Property Organization (ARIPO) : BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW
Eurasian Patent Organization (EAPO) : AM, AZ, BY, KG, KZ, RU, TJ, TM