US20190301478A1 - Compressor anti-surge protectoin under wet gas conditions - Google Patents
Compressor anti-surge protectoin under wet gas conditions Download PDFInfo
- Publication number
- US20190301478A1 US20190301478A1 US16/315,529 US201716315529A US2019301478A1 US 20190301478 A1 US20190301478 A1 US 20190301478A1 US 201716315529 A US201716315529 A US 201716315529A US 2019301478 A1 US2019301478 A1 US 2019301478A1
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- Prior art keywords
- compressor
- gas
- surge
- suction side
- suction
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Classifications
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- 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
- F04D31/00—Pumping liquids and elastic fluids at the same time
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2210/00—Working fluids
- F05D2210/10—Kind or type
- F05D2210/13—Kind or type mixed, e.g. two-phase fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/10—Purpose of the control system to cope with, or avoid, compressor flow instabilities
- F05D2270/101—Compressor surge or stall
Definitions
- Embodiments disclosed herein specifically relate to wet gas compressors, in particular centrifugal wet gas compressors, which process gas that can contain a liquid phase, e.g. heavy hydrocarbons, water or the like.
- a liquid phase e.g. heavy hydrocarbons, water or the like.
- Centrifugal compressors have been designed to process a so-called wet gas, i.e. gas that can contain a certain percentage of a liquid phase.
- Wet gas processing is often required in the oil and gas industry, where gas extracted from a well, such as a subsea well, can contain a liquid hydrocarbon phase, or water.
- the presence and percentage amount of a liquid phase in a gas may affect the operation of the compressor and in particular may have an impact on the surge limit, which determines the range of safe operation of the compressor.
- the liquid volume fraction in the gas flow at the suction side of the compressor is not known. Flowmeters capable of determining the liquid volume fraction are cumbersome and expensive and might not be suitable in certain applications in extreme environmental conditions.
- a method for anti-surge protection of a compressor under wet gas conditions comprises a suction side and a delivery side.
- An anti-surge system is arranged between the delivery side and the suction side of the compressor.
- the method comprises the following steps:
- calculating a surge limit line in a compression ratio vs. corrected power diagram determining a compressor operating point in said compression ratio vs. corrected power diagram; detecting a distance between the operating point and the surge limit line; acting on the anti-surge system of the compressor if the distance is below a minimum safety distance.
- a wet gas compressor system comprising: a compressor having a suction side and a delivery side; an anti-surge control arrangement; a control unit, functionally coupled to the anti-surge control arrangement.
- the control unit is configured and arranged for performing a method as above defined.
- the compression ratio vs. corrected power diagram is a diagram wherein the compressor performances are represented as a function of the relationship between the compression ratio over the compressor and the corrected power of the compressor.
- FIG. 1 illustrates a compressor system
- FIG. 2 illustrates a wet gas compressor operating diagram
- FIG. 3 illustrates a flow chart of methods disclosed herein.
- FIG. 1 schematically illustrates a system 1 comprising a driver 3 and a load 5 .
- the load 5 includes a compressor 7 , for instance a centrifugal compressor.
- a shaft 9 drivingly connects the driver 3 to the load 5 .
- the driver 3 can be an electric motor, a gas turbine engine, a steam turbine or any other suitable driver.
- the compressor 7 comprises a compressor suction side 7 S and a compressor delivery side 7 D.
- the compressor 7 is further provided with an anti-surge system.
- the anti-surge system is comprised of a line or duct 11 that is fluidly coupled to the delivery side 7 D and to the suction side 7 S.
- the anti-surge system comprises an anti-surge valve 13 arranged on the anti-surge line 11 .
- the anti-surge valve 13 can be controllably opened to recirculate gas from the delivery side 7 D to the suction side 7 S of compressor 7 , to prevent surge phenomena in the compressor, if the operating point of the compressor approaches a surge limit line.
- a pressure transducer 17 and a temperature transducer 19 are arranged at the suction side 7 S of compressor 7 , to measure the gas suction pressure Ps and the gas suction temperature Ts of the gas at the suction side 7 S.
- a further pressure transducer 19 and a further temperature transducer 21 are arranged at the delivery side 7 D of compressor 7 , to measure the gas delivery pressure Pd and the gas delivery temperature Td.
- the system 1 further comprises a control unit 23 , which can be functionally coupled to the pressure and temperature transducers 15 , 17 , 19 , 21 to collect measured values of the gas temperature and pressure at the delivery side 7 D and suction side 7 S of compressor 7 .
- the control unit 23 can be further functionally coupled to an actuator 13 A configured and arranged for selectively opening and closing the anti-surge valve 13 .
- Reference number 25 generally designates storage memory resources for the control unit 23 , which can store data useful for an anti-surge control of the compressor 7 , as will be explained in greater detail herein after.
- the control unit 23 can be configured and arranged for receiving further input information, such as data on the gas processed by compressor 7 .
- Block 27 schematically represents a data input, for instance providing information on the mean molar mass Mw of the gas being processed by compressor 7 .
- Reference number 29 schematically designates one or several further process parameter transducers, which provide additional information to the control unit 23 , such as for instance the rotational speed N of compressor 7 , the driving power W required to drive the compressor 7 into rotation and any additional information which may be useful or necessary for controlling the system 1 .
- Anti-surge control of the compressor 7 can be performed using the diagram of FIG. 2 .
- the compression ratio, or pressure ratio, PR of compressor 7 is plotted on the vertical axis of the diagram of FIG. 2 .
- a dimensionless parameter depending upon the absorbed power, i.e. the power required to drive the compressor 7 into rotation, is plotted on the horizontal axis of the diagram of FIG. 2 .
- the dimensionless parameter is a function of the actual driving power W, the suction pressure Ps and the suction temperature Ts of the gas, and can further depend upon parameters of the gas being processed and of characteristics of the compressor.
- the dimensionless corrected power Wcorr is plotted, defined by the following formula:
- W is the actual measured power absorbed by the compressor 7 ;
- Ps, Ts are the gas pressure and temperature at the suction side of the compressor 7 ;
- Mw is the mean molar mass of the gas processed by compressor 7 ;
- Zs is the compressibility of the gas at the compressor suction side;
- R is the gas constant;
- kvs is the isentropic volume exponent of the gas at the compressor suction side;
- D is the impeller diameter.
- a suction limit line SLL can be plotted on the diagram of FIG. 2 , which allows anti-surge control of the compressor 7 without requiring knowledge of the actual liquid mass fraction (LMF) or liquid volume fraction (LVF) of the gas, i.e. the mass or volumetric percentage of liquid phase in the wet gas.
- LMF liquid mass fraction
- LVF liquid volume fraction
- the SLL is a function of the gas conditions at the suction side 7 S of compressor 7 , i.e. of the suction temperature Ts and the suction pressure Ps. Additionally, the SLL is a function of the rotational speed of compressor 7 , as well as of the mean molar mass Mw of the gas and of the compressibility Zs of the gas at the suction side 7 S of compressor 7 .
- the SLL can be expressed as follows:
- the chemical composition of the gas processed by compressor 7 usually varies very slowly during time and can be considered quasi-constant over relatively long time spans, e.g. 24 hours.
- the chemical composition of the gas can be analyzed in-line by flowing a portion of gas through a gas chromatograph. In other embodiments, the gas composition can be analyzed off-line, e.g. by taking a gas sample from the gas duct. Irrespective of how the gas is analyzed, the mean molar mass and the compressibility of the gas can be determined.
- the remaining parameters can be detected by the transducers of system 1 during operation of the compressor 7 .
- the current SLL can be determined, based on features of the compressor, parameters of the gas being processed and operating parameters of the system 1 , which are detected by the transducers functionally coupled to the control unit 23 .
- the control unit 33 Based upon the detected values of suction pressure (Ps), suction temperature (Ts), angular speed (N), mean molar mass (Mw) and compressibility (Zs), the control unit 33 calculates the current suction limit line SLL, based on store data, e.g. in table form, and/or by interpolation.
- the data for the calculation of the SLL can be stored in the storage memory resources 25 .
- the corrected power Wcorr is calculated with formula (1).
- the distance between the actual operating point and the calculated SLL is then determined. Based on said distance, an anti-surge control routine is started, if needed, to control the opening of the anti-surge valve.
- the anti-surge valve can be controlled according to current art methods. In general, if the distance is less than a safety value, the anti-surge valve 13 is opened. If the distance is equal to or greater than a safety value, the anti-surge valve 13 is maintained in the closed condition.
- the control method described so far is summarized in the flow chart of FIG. 3 .
- the last block of the flow chart represents an anti-surge valve control.
Abstract
Description
- The present disclosure relates to compressor control methods and systems. Embodiments disclosed herein specifically relate to wet gas compressors, in particular centrifugal wet gas compressors, which process gas that can contain a liquid phase, e.g. heavy hydrocarbons, water or the like.
- Centrifugal compressors have been designed to process a so-called wet gas, i.e. gas that can contain a certain percentage of a liquid phase. Wet gas processing is often required in the oil and gas industry, where gas extracted from a well, such as a subsea well, can contain a liquid hydrocarbon phase, or water.
- The presence and percentage amount of a liquid phase in a gas may affect the operation of the compressor and in particular may have an impact on the surge limit, which determines the range of safe operation of the compressor. Usually, the liquid volume fraction in the gas flow at the suction side of the compressor, however, is not known. Flowmeters capable of determining the liquid volume fraction are cumbersome and expensive and might not be suitable in certain applications in extreme environmental conditions.
- A need therefore exists, for reliably and efficiently controlling the operation of a wet gas compressor, in particular as far as anti-surge is concerned.
- According to one aspect, a method for anti-surge protection of a compressor under wet gas conditions is disclosed herein. The compressor comprises a suction side and a delivery side. An anti-surge system is arranged between the delivery side and the suction side of the compressor. According to embodiments disclosed herein the method comprises the following steps:
- calculating a surge limit line in a compression ratio vs. corrected power diagram;
determining a compressor operating point in said compression ratio vs. corrected power diagram;
detecting a distance between the operating point and the surge limit line;
acting on the anti-surge system of the compressor if the distance is below a minimum safety distance. - According to a further aspect, disclosed herein is a wet gas compressor system comprising: a compressor having a suction side and a delivery side; an anti-surge control arrangement; a control unit, functionally coupled to the anti-surge control arrangement. The control unit is configured and arranged for performing a method as above defined.
- The compression ratio vs. corrected power diagram is a diagram wherein the compressor performances are represented as a function of the relationship between the compression ratio over the compressor and the corrected power of the compressor.
- Features and embodiments are disclosed here below and are further set forth in the appended claims, which form an integral part of the present description. The above brief description sets forth features of the various embodiments of the present invention in order that the detailed description that follows may be better understood and in order that the present contributions to the art may be better appreciated. There are, of course, other features of embodiments of the invention that will be described hereinafter and which will be set forth in the appended claims. In this respect, before explaining several embodiments of the invention in details, it is understood that the various embodiments of the invention are not limited in their application to the details of the construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. Embodiments of the invention are capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
- As such, those skilled in the art will appreciate that the conception, upon which the disclosure is based, may readily be utilized as a basis for designing other structures, methods, and/or systems for carrying out the several purposes of embodiments of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of embodiments of the present invention.
- A more complete appreciation of the disclosed embodiments of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein:
-
FIG. 1 illustrates a compressor system; -
FIG. 2 illustrates a wet gas compressor operating diagram; -
FIG. 3 illustrates a flow chart of methods disclosed herein. - The following detailed description of the exemplary embodiments refers to the accompanying drawings. The same reference numbers in different drawings identify the same or similar elements. Additionally, the drawings are not necessarily drawn to scale. Also, the following detailed description does not limit embodiments of the invention. Instead, the scope of embodiments of the invention is defined by the appended claims.
- Reference throughout the specification to “one embodiment” or “an embodiment” or “some embodiments” means that the particular feature, structure or characteristic described in connection with an embodiment is included in at least one embodiment of the subject matter disclosed. Thus, the appearance of the phrase “in one embodiment” or “in an embodiment” or “in some embodiments” in various places throughout the specification is not necessarily referring to the same embodiment(s). Further, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.
-
FIG. 1 schematically illustrates asystem 1 comprising adriver 3 and aload 5. Theload 5 includes acompressor 7, for instance a centrifugal compressor. Ashaft 9 drivingly connects thedriver 3 to theload 5. Thedriver 3 can be an electric motor, a gas turbine engine, a steam turbine or any other suitable driver. - The
compressor 7 comprises acompressor suction side 7S and acompressor delivery side 7D. Thecompressor 7 is further provided with an anti-surge system. In the schematic ofFIG. 1 the anti-surge system is comprised of a line orduct 11 that is fluidly coupled to thedelivery side 7D and to thesuction side 7S. Furthermore, the anti-surge system comprises ananti-surge valve 13 arranged on theanti-surge line 11. Theanti-surge valve 13 can be controllably opened to recirculate gas from thedelivery side 7D to thesuction side 7S ofcompressor 7, to prevent surge phenomena in the compressor, if the operating point of the compressor approaches a surge limit line. - In some embodiments a
pressure transducer 17 and atemperature transducer 19 are arranged at thesuction side 7S ofcompressor 7, to measure the gas suction pressure Ps and the gas suction temperature Ts of the gas at thesuction side 7S. Moreover, afurther pressure transducer 19 and afurther temperature transducer 21 are arranged at thedelivery side 7D ofcompressor 7, to measure the gas delivery pressure Pd and the gas delivery temperature Td. - The
system 1 further comprises acontrol unit 23, which can be functionally coupled to the pressure andtemperature transducers delivery side 7D andsuction side 7S ofcompressor 7. Thecontrol unit 23 can be further functionally coupled to anactuator 13A configured and arranged for selectively opening and closing theanti-surge valve 13.Reference number 25 generally designates storage memory resources for thecontrol unit 23, which can store data useful for an anti-surge control of thecompressor 7, as will be explained in greater detail herein after. - The
control unit 23 can be configured and arranged for receiving further input information, such as data on the gas processed bycompressor 7.Block 27 schematically represents a data input, for instance providing information on the mean molar mass Mw of the gas being processed bycompressor 7. -
Reference number 29 schematically designates one or several further process parameter transducers, which provide additional information to thecontrol unit 23, such as for instance the rotational speed N ofcompressor 7, the driving power W required to drive thecompressor 7 into rotation and any additional information which may be useful or necessary for controlling thesystem 1. - Anti-surge control of the
compressor 7 can be performed using the diagram ofFIG. 2 . The compression ratio, or pressure ratio, PR ofcompressor 7 is plotted on the vertical axis of the diagram ofFIG. 2 . A dimensionless parameter depending upon the absorbed power, i.e. the power required to drive thecompressor 7 into rotation, is plotted on the horizontal axis of the diagram ofFIG. 2 . The dimensionless parameter is a function of the actual driving power W, the suction pressure Ps and the suction temperature Ts of the gas, and can further depend upon parameters of the gas being processed and of characteristics of the compressor. - According to some embodiments, on the horizontal axis of the diagram in
FIG. 2 the dimensionless corrected power Wcorr is plotted, defined by the following formula: -
- wherein:
W is the actual measured power absorbed by thecompressor 7;
Ps, Ts are the gas pressure and temperature at the suction side of thecompressor 7;
Mw is the mean molar mass of the gas processed bycompressor 7;
Zs is the compressibility of the gas at the compressor suction side;
R is the gas constant;
kvs is the isentropic volume exponent of the gas at the compressor suction side;
D is the impeller diameter. - It has been discovered that for a given set of operating parameters a suction limit line SLL can be plotted on the diagram of
FIG. 2 , which allows anti-surge control of thecompressor 7 without requiring knowledge of the actual liquid mass fraction (LMF) or liquid volume fraction (LVF) of the gas, i.e. the mass or volumetric percentage of liquid phase in the wet gas. - For a given
compressor 7, the SLL is a function of the gas conditions at thesuction side 7S ofcompressor 7, i.e. of the suction temperature Ts and the suction pressure Ps. Additionally, the SLL is a function of the rotational speed ofcompressor 7, as well as of the mean molar mass Mw of the gas and of the compressibility Zs of the gas at thesuction side 7S ofcompressor 7. Thus, the SLL can be expressed as follows: -
SLL=f(Ts,Ps,Zs,Mw,N) (2) - Some of the parameters appearing in the function which defines the surge limit line SLL, specifically the mean molar mass Mw and the compressibility Zs at the suction side depend upon the chemical composition of the gas. The chemical composition of the gas processed by
compressor 7 usually varies very slowly during time and can be considered quasi-constant over relatively long time spans, e.g. 24 hours. The chemical composition of the gas can be analyzed in-line by flowing a portion of gas through a gas chromatograph. In other embodiments, the gas composition can be analyzed off-line, e.g. by taking a gas sample from the gas duct. Irrespective of how the gas is analyzed, the mean molar mass and the compressibility of the gas can be determined. - The remaining parameters can be detected by the transducers of
system 1 during operation of thecompressor 7. - The surge limit line SLL extends from a first end point corresponding to a dry gas condition (Liquid Mass Fraction, LMF=0%) to a second end point corresponding to the maximum liquid content (LMF=LMFmax).
- During operation of the
system 1, therefore, the current SLL can be determined, based on features of the compressor, parameters of the gas being processed and operating parameters of thesystem 1, which are detected by the transducers functionally coupled to thecontrol unit 23. Based upon the detected values of suction pressure (Ps), suction temperature (Ts), angular speed (N), mean molar mass (Mw) and compressibility (Zs), the control unit 33 calculates the current suction limit line SLL, based on store data, e.g. in table form, and/or by interpolation. The data for the calculation of the SLL can be stored in thestorage memory resources 25. Additionally, based on the above mentioned data and on the actual power W currently absorbed bycompressor 7, the corrected power Wcorr is calculated with formula (1). The actual operating point ofcompressor 7 is determined, the operating point having the coordinates [Wcorr; PR=Pd/Ps] in the diagram ofFIG. 2 . The distance between the actual operating point and the calculated SLL is then determined. Based on said distance, an anti-surge control routine is started, if needed, to control the opening of the anti-surge valve. The anti-surge valve can be controlled according to current art methods. In general, if the distance is less than a safety value, theanti-surge valve 13 is opened. If the distance is equal to or greater than a safety value, theanti-surge valve 13 is maintained in the closed condition. - The control method described so far is summarized in the flow chart of
FIG. 3 . The last block of the flow chart represents an anti-surge valve control. - While the disclosed embodiments of the subject matter described herein have been shown in the drawings and fully described above with particularity and detail in connection with several exemplary embodiments, it will be apparent to those of ordinary skill in the art that many modifications, changes, and omissions are possible without materially departing from the novel teachings, the principles and concepts set forth herein, and advantages of the subject matter recited in the appended claims. Hence, the proper scope of the disclosed innovations should be determined only by the broadest interpretation of the appended claims so as to encompass all such modifications, changes, and omissions. In addition, the order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments.
- This written description uses examples to disclose the invention, including the preferred embodiments, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims (10)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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IT102016000070852 | 2016-07-07 | ||
IT102016000070852A IT201600070852A1 (en) | 2016-07-07 | 2016-07-07 | COMPRESSOR-FREE PUMPING PROTECTION IN HUMID GAS CONDITIONS |
PCT/EP2017/066909 WO2018007509A1 (en) | 2016-07-07 | 2017-07-06 | Compressor anti-surge protection under wet gas conditions |
Publications (1)
Publication Number | Publication Date |
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US20190301478A1 true US20190301478A1 (en) | 2019-10-03 |
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ID=57610024
Family Applications (1)
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US16/315,529 Abandoned US20190301478A1 (en) | 2016-07-07 | 2017-07-06 | Compressor anti-surge protectoin under wet gas conditions |
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US (1) | US20190301478A1 (en) |
EP (1) | EP3482081B1 (en) |
JP (1) | JP6979977B2 (en) |
KR (1) | KR102371876B1 (en) |
DK (1) | DK3482081T3 (en) |
IT (1) | IT201600070852A1 (en) |
WO (1) | WO2018007509A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10954951B2 (en) * | 2016-07-07 | 2021-03-23 | Nuovo Pignone Tecnologie Srl | Adaptive anti surge control system and method |
CN114725445A (en) * | 2022-03-25 | 2022-07-08 | 湖南大学 | Flow control method for fuel cell air compressor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180163736A1 (en) * | 2016-12-09 | 2018-06-14 | General Electric Company | Systems and methods for operating a compression system |
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US5508943A (en) * | 1994-04-07 | 1996-04-16 | Compressor Controls Corporation | Method and apparatus for measuring the distance of a turbocompressor's operating point to the surge limit interface |
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US20120183385A1 (en) * | 2011-01-13 | 2012-07-19 | Krishnan Narayanan | Method for preventing surge in a dynamic compressor using adaptive preventer control system and adaptive safety margin |
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US20150315884A1 (en) * | 2012-08-14 | 2015-11-05 | Aker Subsea As | Multiphase pressure boosting pump |
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EP2325494B1 (en) * | 2009-11-19 | 2017-04-12 | General Electric Company | Torque-based sensor and control method for varying gas-liquid fractions of fluids for turbomachines |
ITFI20130064A1 (en) * | 2013-03-26 | 2014-09-27 | Nuovo Pignone Srl | "METHODS AND SYSTEMS FOR CONTROLLING TURBOCOMPRESSORS" |
ES2703380T3 (en) * | 2014-12-18 | 2019-03-08 | Sulzer Management Ag | Operating procedure for a pump, in particular a multiphase pump, as well as a pump |
-
2016
- 2016-07-07 IT IT102016000070852A patent/IT201600070852A1/en unknown
-
2017
- 2017-07-06 KR KR1020197002760A patent/KR102371876B1/en active IP Right Grant
- 2017-07-06 US US16/315,529 patent/US20190301478A1/en not_active Abandoned
- 2017-07-06 WO PCT/EP2017/066909 patent/WO2018007509A1/en unknown
- 2017-07-06 EP EP17734763.0A patent/EP3482081B1/en active Active
- 2017-07-06 JP JP2018567687A patent/JP6979977B2/en active Active
- 2017-07-06 DK DK17734763.0T patent/DK3482081T3/en active
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US5508943A (en) * | 1994-04-07 | 1996-04-16 | Compressor Controls Corporation | Method and apparatus for measuring the distance of a turbocompressor's operating point to the surge limit interface |
US5908462A (en) * | 1996-12-06 | 1999-06-01 | Compressor Controls Corporation | Method and apparatus for antisurge control of turbocompressors having surge limit lines with small slopes |
US6332336B1 (en) * | 1999-02-26 | 2001-12-25 | Compressor Controls Corporation | Method and apparatus for maximizing the productivity of a natural gas liquids production plant |
US6364602B1 (en) * | 2000-01-06 | 2002-04-02 | General Electric Company | Method of air-flow measurement and active operating limit line management for compressor surge avoidance |
US20130170952A1 (en) * | 2010-07-14 | 2013-07-04 | Statoil Asa | Method and apparatus for composition based compressor control and performance monitoring |
US20120183385A1 (en) * | 2011-01-13 | 2012-07-19 | Krishnan Narayanan | Method for preventing surge in a dynamic compressor using adaptive preventer control system and adaptive safety margin |
US20150315884A1 (en) * | 2012-08-14 | 2015-11-05 | Aker Subsea As | Multiphase pressure boosting pump |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US10954951B2 (en) * | 2016-07-07 | 2021-03-23 | Nuovo Pignone Tecnologie Srl | Adaptive anti surge control system and method |
CN114725445A (en) * | 2022-03-25 | 2022-07-08 | 湖南大学 | Flow control method for fuel cell air compressor |
Also Published As
Publication number | Publication date |
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KR102371876B1 (en) | 2022-03-08 |
JP6979977B2 (en) | 2021-12-15 |
EP3482081A1 (en) | 2019-05-15 |
IT201600070852A1 (en) | 2018-01-07 |
KR20190022818A (en) | 2019-03-06 |
EP3482081B1 (en) | 2023-11-22 |
WO2018007509A1 (en) | 2018-01-11 |
JP2020500270A (en) | 2020-01-09 |
DK3482081T3 (en) | 2024-01-29 |
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