EP0757180B1 - Procédé et dispositif d'opération des turbomachines avec régulateurs à gain proportionnel élevé - Google Patents

Procédé et dispositif d'opération des turbomachines avec régulateurs à gain proportionnel élevé Download PDF

Info

Publication number
EP0757180B1
EP0757180B1 EP96110205A EP96110205A EP0757180B1 EP 0757180 B1 EP0757180 B1 EP 0757180B1 EP 96110205 A EP96110205 A EP 96110205A EP 96110205 A EP96110205 A EP 96110205A EP 0757180 B1 EP0757180 B1 EP 0757180B1
Authority
EP
European Patent Office
Prior art keywords
relief valve
regulator
valve
surge
closing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96110205A
Other languages
German (de)
English (en)
Other versions
EP0757180A1 (fr
Inventor
Wilfried Dr.-Ing. Blotenberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN Turbo AG
Original Assignee
MAN Turbomaschinen AG GHH Borsig
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MAN Turbomaschinen AG GHH Borsig filed Critical MAN Turbomaschinen AG GHH Borsig
Publication of EP0757180A1 publication Critical patent/EP0757180A1/fr
Application granted granted Critical
Publication of EP0757180B1 publication Critical patent/EP0757180B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/023—Details or means for fluid extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0223—Control schemes therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves

Definitions

  • the invention relates to a method and an apparatus for Operating turbomachines to avoid Controller instabilities with high proportional gain of the Regulator with the features of the preamble of claims 1 and 7.
  • a surge limit controller which has a nonlinear amplifier.
  • This non-linear The amplifier increases the control loop gain when the Blow-off valves by more than 2% by a factor of 5. Since the Pump limit controllers only work optimally if they are in the Normal operation operated with the maximum permissible gain , this gain increase by 5 means that the controller works unstably with this high gain.
  • EP-A-0 336 092 describes a method for protecting a Turbocompressor before pumping by blowing over a Blow-off valve known.
  • the blow-off valve is increased Adjustment speed in the opening direction and at a slower rate Adjustment speed adjusted in the closing direction.
  • Parallel the surge limit control is intervening in an emergency Safety control operated.
  • EP-A-0 477 055 describes a device or a method to protect a compressor against unstable operation under Use of a surge limit controller and one Pump limit control valve described.
  • the known device assigns an electrovalve to the surge limit control valve Drain the servo motor of the surge limit control valve and one
  • Ramp generator on in a parallel control loop is arranged.
  • This control device is in Direction of opening of the relief valve no time limit effective, but there is a time limit in the closing direction the closing process of the relief valve provided.
  • the Opening and closing movements are done by the electro valve and made the ramp generator. It does that Solenoid valve the quick opening of the relief valve during the time-limited closings over that in the parallel Control loop arranged ramp generator takes place.
  • a negative sign The control difference e therefore means that the working point the compressor is in the safe working area while a positive sign of the system deviation e means that the Operating point the blow-off line to the left, d. H. towards has exceeded the surge limit. If the exceeds Working point the surge limit, there is a pumping of the Compressor. Make these rule differences inadmissible the controller is switched to follow-up mode and its exit to the current relief valve position switched. This ensures that the manipulated variable of Pump limit controller is not significantly different from the position of the Valve deviates.
  • the stability behavior of the surge limit control loops according to the invention have a positive influence in that an electronic limitation of the closing speed of the relief valve is made. Consequently can have surge limiters with significantly higher Proportional gain can be operated stably.
  • This Gradient limiter is asymmetrical, i. H. there is none in the opening direction of the relief valve time limit is effective, in the closing direction however, a freely parameterizable time limit the closing process of the relief valve provided or programmed.
  • a surge limit control with such a gradient limitation is largely independent from very high controller gains.
  • a very high one selected controller gain inevitably leads to the fact that the controller circuit becomes unstable. Without this limitation would the controller output and thus the valve position swing. With this limitation in the controller output would however, this vibration affects the first half wave restrict, d. that is, the gain would be too high the relief valve further than an optimally set one Open the controller, the subsequent quick closing process would go away, however, and the valve would only with the set gradient, d. H. slowly, conclude.
  • the main advantage of the invention is that significantly larger proportional gains can be selected are. As a result, the surge limit controller intervenes at one Process disruption significantly more powerful and protects the Compressor much better before pumps.
  • the manipulated variable limiter is a function block imagine its output in the stationary Operating case is always the same as its entrance. This applies also for dynamic processes in the direction of valve opening. Control commands in the closing direction are also unaffected switched through from input to output, as long as the gradient for the manipulated variable change is less than the set limit. He follows this change of input with a steeper Gradient, the output size changes with the as Gradients set until the Gradient of the input is smaller than the set one Border.
  • the Gradient switchable this will required if at a greater distance from the Working point from the surge limit a faster Closing speed is allowed and close the surge limit to a slower speed is switched. This happens when the Working point, for example, more than 20% away from the blow-off line, then the valve can be used a positioning time of z. B. 20 seconds or even Close for 1 second for the entire stroke; approaches however, the working point is closer to the blow-off line and falls below the 20% limit, then for example to a positioning time of 5 minutes for the entire Hub switched.
  • the invention is based on schematic Exemplary embodiments explained in more detail.
  • the turbocompressor (1) is on the intake side connected to an intake pipe (10). Delivery side is the turbo compressor (1) with an exhaust pipe (11) connected via a check valve (12) the medium compressed by the turbocompressor (1) leads to a downstream process.
  • a check valve (12) In front of the check valve (12) branches from the discharge line (11) a blow-off line (20) into which a blow-off valve (2) with silencer (3) with a pneumatic or hydraulic actuator (21) is turned on with a control line (22) is connected.
  • the intake side is connected to the intake line (10) connected flow meter (31) to the Compressor (1) flowing flow of the to be compressed Medium recorded.
  • the pressure gauge (32) is a function generator (33) downstream, based on saved Data associated with a particular print, just permissible minimum flow value outputs for the compressor (1).
  • the one from the flow meter (31) Actually measured actual flow value and that of Function transmitter (32) output flow setpoint are fed to a subtractor (34), in which the difference from this by subtracting the actual value is formed from the setpoint.
  • the control parameter generated in the subtractor (34) is given to a surge limit controller (41), the Subtractor (34) is connected downstream.
  • the surge limit controller (41) ensures a continuous Regulation, d. H. an exact adjustment of the Blow-off valve (2) depending on the position of the Working point in the map.
  • the output works for this the surge limit controller (41) over a gradient limiter (50) and via a control line (22) to the Actuating device (21) of the relief valve (2).
  • a Positioner From the actuator (21) with a Positioner supplies pressure media (23) to a piston-cylinder unit, not shown specifically or membrane unit for generating the Force for the adjustment movement of the relief valve (2) in the closing and opening direction.
  • the power for Adjustment movement of the relief valve (2) in the opening direction is generally used for security reasons an energy storage element, e.g. B. a tense Spring generated to in the event of failure of the scheme automatic opening of the relief valve (2) ensure.
  • the output of the control line (22) acts on a pneumatic one or hydraulic actuating device (21).
  • the relief valve (2) in the event of a process failure by lowering the control signal in the opening direction adjusted until the compressor operating point in the safe map area is reset with only the constructive design of valve (2) and actuator (21) dependent actuating speed.
  • the output signal of the surge limit controller increases (41) again.
  • the gradient limiter (50) limits the rise of the control signal (22) on the set limit and thus causes a time delay Closure of the relief valve (2) from the last position reached.
  • the surge limit controller (41) limits now internally adjust its output size by tracking the valve position. If position measurement is missing on Valve (2) can also control signal (22) on the Pump limit controller (41) are returned.
  • the electronic gradient limiter according to the invention (50) is shown in detail in Fig. 2. It exists from the signal input block, a control factor or Gain (51), a limiter (52) and an integrator (53). From the control line (22) branches to the Integrator (53) from a feedback line (54), which are directly connected to the control factor or gain (51) is. The limits for the gradients are called Upper and lower limit of the limiter (52) set.
  • the gradient limiter (50) and the surge limit controller (41) can advantageously be known components be used so that the implementation of the Process and the production of a suitable Device comparatively simple and inexpensive are.

Claims (11)

  1. Invention concernant un procédé permettant de faire fonctionner des turbomachines afin d'éviter les phénomènes d'instabilité de régulateur sur des régulations de seuil limite de pompage, à forte amplification proportionnelle du régulateur, par décharge par l'intermédiaire d'une soupape de décharge. Selon ledit procédé, un paramètre de réglage est déterminé sur la base de valeurs mesurées au moins pour le débit du compresseur et la pression finale dudit compresseur, ainsi que sur la base de valeurs théoriques prédéfinies ou pré-déterminables. Une ouverture immédiate de la soupape de décharge peut être effectuée par un régulateur de seuil limite de pompage, sur la base dudit paramètre de réglage, au moyen d'un dispositif d'actionnement pneumatique ou hydraulique, via un milieu de pression. Dans le sens d'ouverture de la soupape de décharge (2), aucune limitation temporelle n'est efficace, alors que dans le sens de fermeture, une limitation temporelle pouvant être paramétrée librement est prévue ou intégrée par programme. Ce procédé se caractérise en ce qu'un limiteur de gradients de structure asymétrique assure aussi bien la limitation de la vitesse de fermeture de la soupape de décharge électronique (50) par voie électronique, que l'ouverture de ladite soupape de décharge (2).
  2. Procédé selon la revendication 1, caractérisé en ce qu'il est prévu un limiteur de gradient (50) commutable permettant d'atteindre une plus grande vitesse de fermeture, en cas d'écart plus important entre le point de fonctionnement dynamique et le seuil limite de pompage et de parvenir à une vitesse de fermeture plus réduite de la soupape dé décharge (2), à proximité du seuil limite de pompage.
  3. Procédé selon les revendications 1 et 2, caractérisé en ce qu'il est prévu un limiteur de gradient (50) à plusieurs étages de commutation, qui permet de réduire progressivement la vitesse de fermeture sur la ligne de décharge, à l'approche du point de fonctionnement dynamique.
  4. Procédé selon les revendications 1 et 2, caractérisé en ce qu'une valeur-seuil du gradient, qui peut être modifiée en permanence, permet de réduire en continu la vitesse de fermeture de la soupape de décharge (2) sur la ligne de décharge, à l'approche du point de fonctionnement dynamique.
  5. Procédé selon la revendication 1, caractérisé en ce que la position de la soupape de décharge (2) est asservie sur le régulateur de hauteur maximale d'aspiration.
  6. Procédé selon la revendication 1, caractérisé en ce que le signal de la ligne de commande (22) est réinjecté dans le régulateur de seuil limite de pompage (41).
  7. Invention concernant un dispositif permettant d'actionner des turbomachines afin d'éviter les phénomènes d'instabilité du régulateur sur des régulations de seuil limite de pompage, à forte amplification proportionnelle du régulateur. Ce dispositif comprend un régulateur de seuil limite de pompage (41) pour assurer le déplacement d'une soupape de décharge (2) par l'intermédiaire d'un milieu de pression, au moyen d'un dispositif d'actionnement (21) pneumatique ou hydraulique comportant un régulateur de position avec une unité piston-cylindre ou une unité membrane-cylindre. Ledit dispositif comprend également une ligne de commande (22) pour un actionnement facultatif de la soupape de décharge (2) dans le sens d'ouverture, sans limitation temporelle, et dans le sens de fermeture, avec une limitation temporelle pouvant être paramétrée librement du processus de fermeture. Ce dispositif se caractérise en ce qu'un limiteur de gradient (50) électronique de structure asymétrique est intercalé entre le régulateur de seuil limite de pompage (41) et la ligne de commande (22).
  8. Dispositif selon la revendication 7, caractérisé en ce que le limiteur de gradient (50) comporte un facteur d'ajustement (51), un limiteur (52) et un intégrateur (53).
  9. Dispositif selon la revendication 7, caractérisé en ce qu'il intervient une rétroaction (54) après l'intégrateur (53), repartant en direction du coefficient d'ajustement (51).
  10. Dispositif selon la revendication 7, caractérisé en ce qu'une ligne de retour (60) est disposée entre le dispositif d'actionnement (21) pneumatique/hydraulique de la soupape de décharge (2) et le régulateur de seuil limite de pompage (41), afin d'indiquer la position de la soupape.
  11. Dispositif selon la revendication 7, caractérisé en ce que la ligne de commande (22) est couplée à la ligne de retour (60), par l'intermédiaire du dispositif d'actionnement (21) pneumatique/hydraulique.
EP96110205A 1995-08-01 1996-06-25 Procédé et dispositif d'opération des turbomachines avec régulateurs à gain proportionnel élevé Expired - Lifetime EP0757180B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19528253A DE19528253C2 (de) 1995-08-01 1995-08-01 Verfahren und Vorrichtung zur Vermeidung von Reglerinstabilitäten bei Pumpgrenzregelungen beim Betrieb von Strömungsmaschinen mit Reglern hoher Prportionalverstärkung
DE19528253 1995-08-01

Publications (2)

Publication Number Publication Date
EP0757180A1 EP0757180A1 (fr) 1997-02-05
EP0757180B1 true EP0757180B1 (fr) 2001-10-24

Family

ID=7768429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96110205A Expired - Lifetime EP0757180B1 (fr) 1995-08-01 1996-06-25 Procédé et dispositif d'opération des turbomachines avec régulateurs à gain proportionnel élevé

Country Status (3)

Country Link
US (1) US5765991A (fr)
EP (1) EP0757180B1 (fr)
DE (2) DE19528253C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7025558B2 (en) 2003-01-31 2006-04-11 Man Turbo Ag Process for the reliable operation of turbocompressors with surge limit control and surge limit control valve

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10012380A1 (de) * 2000-03-14 2001-09-20 Man Turbomasch Ag Ghh Borsig Verfahren zum Schutz eines Turbokompressors vor Betrieb im instabilen Arbeitsbereich
EP2101240B1 (fr) * 2008-03-10 2013-06-26 Karl Morgenbesser Organe de régulation pour liquides
US9194319B2 (en) * 2013-01-25 2015-11-24 General Electric Company Methods for intentional turbo surging for enhanced system control and protections
EP3147511A1 (fr) * 2015-09-22 2017-03-29 Siemens Aktiengesellschaft Procédé de contrôle de pompage, turbocompresseur
CN109505795A (zh) * 2019-01-11 2019-03-22 华电国际电力股份有限公司邹县发电厂 风机动调断电保护系统及其方法
DE102020001431A1 (de) * 2020-03-05 2021-09-09 KSB SE & Co. KGaA Verfahren zur Durchfluss- und/oder Druckregelung in einer hydraulischen Anlage

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623899B2 (de) * 1976-05-28 1979-11-29 Gutehoffnungshuette Sterkrade Ag, 4200 Oberhausen Verfahren zum Betreiben von Turboverdichtern in der Nähe der Pumpgrenze
US4142838A (en) * 1977-12-01 1979-03-06 Compressor Controls Corporation Method and apparatus for preventing surge in a dynamic compressor
DE3105376C2 (de) * 1981-02-14 1984-08-23 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Verfahren zum Betreiben von Turboverdichtern
DE3540284A1 (de) * 1985-11-13 1987-05-14 Gutehoffnungshuette Man Einrichtung zum regeln eines turbokompressors zur verhinderung des pumpens
DE3540285A1 (de) * 1985-11-13 1987-05-14 Gutehoffnungshuette Man Verfahren und einrichtung zum regeln von turbokompressoren
DE3805119A1 (de) * 1988-02-18 1989-08-31 Gutehoffnungshuette Man Verfahren und einrichtung zum regeln von turbokompressoren
DE3809070A1 (de) * 1988-03-18 1989-10-26 Gutehoffnungshuette Man Verfahren zum sicheren betreiben von turbo-kompressoren
DE3809881A1 (de) * 1988-03-24 1989-10-12 Gutehoffnungshuette Man Regelverfahren zur vermeidung des pumpens eines turbokompressors
DE3810717A1 (de) * 1988-03-30 1989-10-19 Gutehoffnungshuette Man Verfahren zur vermeidung des pumpens eines turboverdichters mittels abblaseregelung
DE3811232A1 (de) * 1988-04-02 1989-10-26 Gutehoffnungshuette Man Regelverfahren zum vermeiden des pumpens eines turboverdichters mittels bedarfsweisen abblasens
DE3811230A1 (de) * 1988-04-02 1989-10-26 Gutehoffnungshuette Man Verfahren zum schuetzen eines turboverdichters vor pumpen mittels abblasens ueber ein abblaseventil sowie vorrichtung zur durchfuehrung des verfahrens
FR2666854B1 (fr) * 1990-09-19 1992-12-18 Framatome Sa Dispositif de commande de moyens d'antipompage d'un compresseur.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7025558B2 (en) 2003-01-31 2006-04-11 Man Turbo Ag Process for the reliable operation of turbocompressors with surge limit control and surge limit control valve

Also Published As

Publication number Publication date
EP0757180A1 (fr) 1997-02-05
DE19528253C2 (de) 1997-10-16
US5765991A (en) 1998-06-16
DE19528253A1 (de) 1997-02-13
DE59607984D1 (de) 2001-11-29

Similar Documents

Publication Publication Date Title
EP2033057B1 (fr) Dispositif et procédé pour réaliser un essai de fonction d'organe de réglage sur une turbomachine
DE10012380A1 (de) Verfahren zum Schutz eines Turbokompressors vor Betrieb im instabilen Arbeitsbereich
EP0967396B1 (fr) Procédé d' opération des turbo-compresseurs
EP1069314A1 (fr) Commande d'une unité-compresseur
EP1016787B1 (fr) Procédé d' opération d' un compresseur et système fonctionnant selon ce procédé
EP0336095B1 (fr) Procédé de commande pour éviter le pompage d'un compresseur centrifuge par l'échappement suivant les besoins
EP0757180B1 (fr) Procédé et dispositif d'opération des turbomachines avec régulateurs à gain proportionnel élevé
EP0335105B1 (fr) Procédé pour éviter le pompage d'un compresseur centrifuge par le contrôle d'échappement
EP0223207B1 (fr) Procédé et dispositif de réglage d'un turbocompresseur pour empêcher le pompage
DE2623899A1 (de) Verfahren zum betreiben von grossen turbo-verdichtern
DE3811230C2 (fr)
EP0334034B1 (fr) Procédé de commande pour éviter le pompage d'un compresseur centrifuge
EP1116885B1 (fr) Procédé et appareil de contrôle d'un turbo-compresseur pour éviter le pompage
EP0771950B1 (fr) Procédé de protection d'un turbo compresseur contre l'opération dans un domaine instable au moyen de vannes ayant deux vitesses de réglage
EP0222382B1 (fr) Procédé de réglage de turbocompresseurs
EP0822332B1 (fr) Générateur hydraulique
WO2021224386A1 (fr) Soupape à entraînement hybride, électrique et pneumatique
EP2101240B1 (fr) Organe de régulation pour liquides
EP4146942A1 (fr) Dispositif d'actionnement à deux soupapes reliées en parallèle, pour le fonctionnement d'un turbocompresseur
WO2023194306A1 (fr) Dispositif de régulation, unité de régulation et procédé
DE3234237A1 (de) Einrichtung fuer die ueberwachung der stellungsregelung von turbinenventilantrieben

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE GB IT LI NL

17P Request for examination filed

Effective date: 19970114

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GHH BORSIG TURBOMASCHINEN GMBH

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MAN TURBOMASCHINEN AG GHH BORSIG

17Q First examination report despatched

Effective date: 20000417

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE GB IT LI NL

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59607984

Country of ref document: DE

Date of ref document: 20011129

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020105

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: BLOTENBERG, WILFRIED, DR.-ING.

Free format text: MAN TURBO AG#STEINBRINKSTRASSE 1#46145 OBERHAUSEN (DE) -TRANSFER TO- BLOTENBERG, WILFRIED, DR.-ING.#IRKENSBUSCH 28#46145 OBERHAUSEN (DE)

Ref country code: CH

Ref legal event code: PFA

Owner name: MAN TURBO AG

Free format text: MAN TURBOMASCHINEN AG GHH BORSIG#BAHNHOFSTRASSE 66#46145 OBERHAUSEN (DE) -TRANSFER TO- MAN TURBO AG#STEINBRINKSTRASSE 1#46145 OBERHAUSEN (DE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090625

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090618

Year of fee payment: 14

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100625

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 59607984

Country of ref document: DE

Owner name: MAN DIESEL & TURBO SE, DE

Free format text: FORMER OWNER: MAN TURBO AG, 46145 OBERHAUSEN, DE

Effective date: 20110325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100625

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20150619

Year of fee payment: 20

Ref country code: CH

Payment date: 20150618

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20150618

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59607984

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20160624

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL