EP1929128A1 - Turbine cleaning - Google Patents
Turbine cleaningInfo
- Publication number
- EP1929128A1 EP1929128A1 EP06775205A EP06775205A EP1929128A1 EP 1929128 A1 EP1929128 A1 EP 1929128A1 EP 06775205 A EP06775205 A EP 06775205A EP 06775205 A EP06775205 A EP 06775205A EP 1929128 A1 EP1929128 A1 EP 1929128A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- cleaning
- internal combustion
- combustion engine
- turbine
- 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.)
- Withdrawn
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 58
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 235000015250 liver sausages Nutrition 0.000 claims 1
- XYSQXZCMOLNHOI-UHFFFAOYSA-N s-[2-[[4-(acetylsulfamoyl)phenyl]carbamoyl]phenyl] 5-pyridin-1-ium-1-ylpentanethioate;bromide Chemical compound [Br-].C1=CC(S(=O)(=O)NC(=O)C)=CC=C1NC(=O)C1=CC=CC=C1SC(=O)CCCC[N+]1=CC=CC=C1 XYSQXZCMOLNHOI-UHFFFAOYSA-N 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000011109 contamination Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000006378 damage Effects 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/007—Preventing corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/002—Cleaning of turbomachines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
- F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
- F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/30—Preventing corrosion or unwanted deposits in gas-swept spaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/16—Other safety measures for, or other control of, pumps
-
- 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
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
Definitions
- the invention relates to the field of turbomachines subjected to exhaust gases of internal combustion engines. It relates to a cleaning method for cleaning an exhaust gas turbine.
- Exhaust gas turbines are used in exhaust gas turbochargers for charging internal combustion engines or in power turbines for converting the energy contained in the exhaust gases of internal combustion engines into mechanical or electrical energy.
- the guide vanes of the nozzle ring and the various turbine housing parts occurs in the exhaust gas turbine.
- Such Schmutzablagerurigen lead in the area of the nozzle ring u. a. to a poorer turbine efficiency and consequently to the reduction of the performance of the downstream engines, for example the exhaust turbine driven compressor and the supercharged engine itself.
- the exhaust gas temperatures in the combustion chamber increase, thereby thermally overstressing both the engine and the turbocharger can.
- damage or even destruction of the exhaust valves can occur in the internal combustion engine.
- the nozzle ring, turbine blades and affected areas of the turbine housing must be regularly freed from them adhering dirt.
- DE 35 15 825 A1 discloses a method and a device for cleaning the rotor blades and the nozzle ring of the axial turbine of an exhaust gas turbocharger.
- the cleaning device consists of several arranged on the gas inlet housing of the axial turbine water nozzles reaching into the flow channel and a water pipe.
- a cleaning requirement is determined via a measuring and evaluation unit. Accordingly, water is injected into the flow channel via the nozzles arranged upstream of the guide vanes. The resulting water droplets are transported from the exhaust gas flow to the guide and the blades of the axial turbine and clean them of the adhering contaminants.
- the object of the present invention is to provide a cleaning method for cleaning an exhaust gas turbine with which an exhaust gas turbine can be kept clean and / or cleaned sustainably and automatically over the entire engine operating range.
- a small amount of cleaning liquid is continuously or cyclically fed into the exhaust gas flow and to be purified
- the small amount of cleaning fluid causes only an insignificant reduction in the performance of the exhaust gas turbine or increasing the exhaust gas temperatures and can be fed with unchanged engine operation, so that the cleaning or keeping clean the exhaust gas turbine can be done throughout the engine operating range. Fluctuations in the power output of the internal combustion engine due to become necessary exhaust gas turbine cleaning thus remain.
- small amounts of cleaning liquid are supplied to the flow channel of an exhaust gas turbine upstream of the guide device and of the rotor blades of the turbine wheel.
- the cleaning liquid usually water or water added with a cleansing substance, is controlled and injected in small quantities into the flow channel.
- the amount of the injected cleaning liquid can be varied depending on about the power output of the internal combustion engine or the exhaust gas flow, so that at low power output in partial load operation, a smaller amount of cleaning fluid is injected than at full load operation.
- the amount of cleaning liquid is varied in proportion to the engine power.
- the amount of the injected cleaning liquid can be controlled by varying the injection duration or the intervals between them with a constant jet.
- Per 1 m 3 / s of exhaust gas in the inventive method about 0.1 to max. 1.0 liter of cleaning fluid injected into the flow channel per minute.
- the components of the exhaust gas turbine When used as an exhaust gas turbine of a turbocharger for charging the internal combustion engine, the components of the exhaust gas turbine can sustainably thermally relieved and power losses of the turbocharger and consequent negative influences on the engine operating values are reduced or completely prevented with the inventive cleaning method.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Supercharger (AREA)
- Control Of Turbines (AREA)
Abstract
Depending on the actual operating situation and the composition of the fuels used for driving the internal combustion engine, contamination of the moving blades, of the guide device and of the turbine casing parts occurs sooner or later in the exhaust gas turbine. According to the invention, a small quantity of cleaning fluid is fed continuously or cyclically into the exhaust gas flow of an exhaust gas turbine and is directed onto the components to be cleaned. The small quantity of cleaning fluid can be fed in with unchanged operation of the internal combustion engine, such that the exhaust gas turbine can be cleaned or kept clean within the entire operating range of the internal combustion engine. Fluctuations in the power output of the internal combustion engine on account of requisite cleaning of the exhaust gas turbine therefore do not occur. Furthermore, the formation of thermostress cracks in the critical turbine casing parts is largely avoided.
Description
Turbinenreinigung turbine cleaning
B ES C H RE I B U N GDESCRIPTION
Technisches GebietTechnical area
Die Erfindung bezieht sich auf das Gebiet der mit Abgasen von Brennkraftmaschinen beaufschlagten Strömungsmaschinen. Sie betrifft ein Reinigungsverfahren zum Reinigen einer Abgasturbine.The invention relates to the field of turbomachines subjected to exhaust gases of internal combustion engines. It relates to a cleaning method for cleaning an exhaust gas turbine.
Abgasturbinen werden in Abgasturbolader zum Aufladen von Brennkraftmasehinen oder in Nutzturbinen zum Umwandeln der in den Abgasen von Brennkraftmaschinen enthaltenen Energie in mechanische oder elektrische Energie eingesetzt. In Abhängigkeit von der konkreten Betriebssituation und der Zusammensetzung der zum Antrieb der Brennkraftmaschine verwendeten Brennstoffe, kommt es in der Abgasturbine früher oder später zu einer Verschmutzung der Turbinenschaufeln am Laufrads, der Leitschaufeln des Düsenringes und der verschiedenen Turbinengehäuseteile. Solche Schmutzablagerurigen führen im Bereich des Düsenrings u. a. zu einem schlechteren Turbinenwirkungsgrad und demzufolge zur Verringerung der Leistung der nachfolgenden Maschinen, beispielsweise des mittels Abgasturbine angetriebenen Verdichters und der aufgeladenen Brennkraftmaschine selbst. Als Folge dessen kommt es zu einer Erhöhung der Abgastemperaturen im Brennraum, wodurch sowohl die Brennkraftmaschine als auch der Turbolader thermisch überbeansprucht werden können. Bei der Brennkraftmaschine kann insbesondere eine Beschädigung oder gar Zerstörung der Auslassventile auftreten.Exhaust gas turbines are used in exhaust gas turbochargers for charging internal combustion engines or in power turbines for converting the energy contained in the exhaust gases of internal combustion engines into mechanical or electrical energy. Depending on the actual operating situation and the composition of the fuels used to drive the internal combustion engine, sooner or later fouling of the turbine blades on the impeller, the guide vanes of the nozzle ring and the various turbine housing parts occurs in the exhaust gas turbine. Such Schmutzablagerurigen lead in the area of the nozzle ring u. a. to a poorer turbine efficiency and consequently to the reduction of the performance of the downstream engines, for example the exhaust turbine driven compressor and the supercharged engine itself. As a result, the exhaust gas temperatures in the combustion chamber increase, thereby thermally overstressing both the engine and the turbocharger can. In particular, damage or even destruction of the exhaust valves can occur in the internal combustion engine.
Lagert sich auf dem Düsenring und auf den Turbinenschaufeln eines mit einer Viertakt- Brennkraftmaschine verbundenen Turboladers eine Schmutzschicht ab, so ist ausserdem mit einem Ansteigen der Turboladerdrehzahl und folglich des Ladedrucks und des Zylinderdrucks zu rechnen. Dadurch werden sowohl Bauteile der Brennkraftmaschine als auch des Turboladers zusätzlich zur erhöhten thermischen Belastung auch mechanisch höher beansprucht, was ebenfalls bis zur Zerstörung der betroffenen Bauteile führen kann.
Bei unregelmässiger Verteilung der Schmutzschicht am Umfang der Laufschaufeln des Turbinenrades kommt es zu einer Erhöhung der Unwucht des Rotors, wodurch auch die Lagerung beschädigt werden kann.If a dirt layer is deposited on the nozzle ring and on the turbine blades of a turbocharger connected to a four-stroke internal combustion engine, an increase in the turbocharger speed and consequently in the boost pressure and the cylinder pressure must also be expected. As a result, both components of the internal combustion engine and the turbocharger in addition to the increased thermal stress and mechanically higher claimed, which can also lead to the destruction of the affected components. With irregular distribution of the dirt layer on the circumference of the blades of the turbine wheel, there is an increase in the imbalance of the rotor, whereby the storage can be damaged.
Kommt es am Turbinengehäuse zu Schmutzablagerungen an der im Bereich radial ausserhalb der Turbinenschaufeln verlaufenden Aussenkontur des Strömungskanals, können auf Grund des reduzierten Radialspiels zwischen Turbinenschaufeln und Turbinengehäuse im Betrieb Berührung auftreten, welche die Turbinenschaufelnbeschädigen und im Extremfall unbrauchbar machen können.If there are dirt deposits on the turbine housing at the outer contour of the flow channel extending radially outside the turbine blades, contact may occur during operation due to the reduced radial play between turbine blades and turbine housing, which may damage the turbine blades and, in extreme cases, render them unusable.
Deshalb müssen Düsenring, Turbinenschaufeln und betroffene Bereiche des Turbinengehäuses regelmässig von ihnen anhaftenden Verschmutzungen befreit werden.Therefore, the nozzle ring, turbine blades and affected areas of the turbine housing must be regularly freed from them adhering dirt.
Stand der TechnikState of the art
Aus DE 35 15 825 A1 sind ein Verfahren und eine Vorrichtung zur Reinigung der Laufschaufeln und des Düsenrings der Axialturbine eines Abgasturboladers bekannt. Die Reinigungsvorrichtung besteht aus mehreren am Gaseintrittgehäuse der Axialturbine angeordneten Wasserdüsen die bis in den Strömungskanal reichenden und einer Wasserleitung. Bei einem bestimmten Verschmutzungsgrad der Axialturbine wird über eine Mess- und Auswerteeinheit ein Reinigungsbedarf ermittelt. Dementsprechend wird über die stromauf der Leitschaufeln angeordneten Düsen Wasser in den Strömungskanal eingespritzt. Die dabei entstehenden Wassertröpfchen werden vom Abgasstrom bis zu den Leit- bzw. den Laufschaufeln der Axialturbine transportiert und reinigen diese von den anhaftenden Verschmutzungen. Während einem relativ kurzen Reinigungsintervall wird dabei eine grosse Menge Reinigungsflüssigkeit (ca. 3 l/min Reinigungsflüssigkeit pro m3/s Abgas) in die Strömung eingespeist, um eine möglichst gründliche Reinigung zu erzielen. Bei diesem Reinigungsverfahren muss aufgrund der grossen Wassermenge die Motorlast frühzeitig und während dem gesamten Reinigungsvorgang reduziert werden. Dies ist erforderlich, um einen unzulässig hohen Anstieg der Abgastemperaturen während des Reinigungsvorganges zu vermeiden. Ein übermässiger Anstieg der Abgastemperaturen während des Reinigungsvorganges führt zur thermischen Überbelastung der Abgasturbinen und der Brennkraftmaschine. Ebenfalls aus dem Stand der Technik ist bekannt, dass in der Anfangsphase der Einspritzung einer kalten Reinigungsflüssigkeit in hoher Menge (vgl. oben) auf die heissen
Leitschaufeln des Düsenrings und Laufschaufeln des Turbinenrads, ein zusätzlicher Thermoschock-Reinigungseffekt erzielt werden kann. .DE 35 15 825 A1 discloses a method and a device for cleaning the rotor blades and the nozzle ring of the axial turbine of an exhaust gas turbocharger. The cleaning device consists of several arranged on the gas inlet housing of the axial turbine water nozzles reaching into the flow channel and a water pipe. At a certain degree of contamination of the axial turbine, a cleaning requirement is determined via a measuring and evaluation unit. Accordingly, water is injected into the flow channel via the nozzles arranged upstream of the guide vanes. The resulting water droplets are transported from the exhaust gas flow to the guide and the blades of the axial turbine and clean them of the adhering contaminants. During a relatively short cleaning interval, a large amount of cleaning fluid (about 3 l / min of cleaning fluid per m 3 / s of exhaust gas) is fed into the flow in order to achieve as thorough a cleaning as possible. Due to the large amount of water in this cleaning process, the engine load must be reduced early and during the entire cleaning process. This is necessary to avoid an unacceptably high increase in exhaust gas temperatures during the cleaning process. An excessive increase in the exhaust gas temperatures during the cleaning process leads to thermal overload of the exhaust gas turbine and the internal combustion engine. It is also known from the prior art that in the initial phase of the injection of a cold cleaning liquid in a high amount (see above) in the hot Guide vanes of the nozzle ring and blades of the turbine wheel, an additional thermal shock-cleaning effect can be achieved. ,
Nicht nur die Leitschaufeln des Düsenrings und die Laufschaufeln des Turbinenrades sondern auch die Turbinengehäuseteile werden bei der Thermoschock-Reinigung thermisch sehr stark beansprucht. Die Vermeidung der Bildung von unzulässig hohen Thermospannungen oder gar Rissen in den entsprechenden Bauteilen ist konstruktiv sehr aufwendig, erfordert eine ausgeklügelte Regelung der Reinigung und verursacht dadurch hohe Kosten.Not only the guide vanes of the nozzle ring and the blades of the turbine wheel but also the turbine housing parts are thermally stressed during thermal shock cleaning. The avoidance of the formation of impermissibly high thermal stresses or even cracks in the corresponding components is structurally very complicated, requires a sophisticated control of cleaning and thereby causes high costs.
Kurze Darstellung der Erfindung Die Aufgabe der vorliegenden Erfindung besteht darin, ein Reinigungsverfahren zum Reinigen einer Abgasturbine zu schaffen, mit welchem eine Abgasturbine automatisch und im gesamten Brennkraftmaschinenbetriebsbereich nachhaltig sauber gehalten, bzw. gereinigt werden kann.Summary of the Invention The object of the present invention is to provide a cleaning method for cleaning an exhaust gas turbine with which an exhaust gas turbine can be kept clean and / or cleaned sustainably and automatically over the entire engine operating range.
Erfindungsgemäss wird kontinuierlich oder getaktet eine kleine Menge Reinigungsflüssigkeit in den Abgasstrom eingespeist und auf die zu reinigendenAccording to the invention, a small amount of cleaning liquid is continuously or cyclically fed into the exhaust gas flow and to be purified
Komponenten der Abgasturbinen (Leitelement, Turbinenschaufel und relevante Turbinengehäuseteile) geführt.Components of the exhaust gas turbine (guide element, turbine blade and relevant turbine housing parts) out.
Die kleine Menge Reinigungsflüssigkeit verursacht nur noch eine unwesentliche Reduktion der Leistung der Abgasturbine bzw. Erhöhung der Abgastemperaturen und kann bei unverändertem Brennkraftmaschinenbetrieb eingespeist werden, so dass die Reinigung bzw. Reinhaltung der Abgasturbine im gesamten Brennkraftmaschinenbetriebsbereich erfolgen kann. Schwankungen in der Leistungsabgabe der Brennkraftmaschine aufgrund von notwendig gewordener Abgasturbinenreinigung bleiben somit aus.The small amount of cleaning fluid causes only an insignificant reduction in the performance of the exhaust gas turbine or increasing the exhaust gas temperatures and can be fed with unchanged engine operation, so that the cleaning or keeping clean the exhaust gas turbine can be done throughout the engine operating range. Fluctuations in the power output of the internal combustion engine due to become necessary exhaust gas turbine cleaning thus remain.
Dank der kontinuierlich befeuchteten Abgasströmung können Thermospannungen und dadurch verursachte Thermospannungsrisse in den Leit- und Laufschaufeln und in den kritischen Turbinengehäuseteilen weitgehend verhindert werden. Zudem führt die befeuchtete Abgasströmung zu weniger starken Ablagerungen an den zu reinigenden Komponenten der Abgasturbinen.
Weg zur Ausführung der ErfindungThanks to the continuously humidified exhaust gas flow, thermal stresses and resulting thermal tensions in the guide vanes and rotor blades and in the critical turbine housing parts can be largely prevented. In addition, the humidified exhaust gas flow leads to less pronounced deposits on the components of the exhaust gas turbines to be cleaned. Way to carry out the invention
Erfindungsgemäss werden dem Strömungskanal einer Abgasturbine stromauf der Leitvorrichtung und der Laufschaufeln des Turbinenrades kleine Mengen Reinigungsflüssigkeit zugeführt. Dadurch wird die Feuchtigkeit des Abgases erhöht, womit eine reinigende bzw. reinhaltende Wirkung entlang des weiteren Strömungswegs durch die Abgasturbine erzielt wird. Die Reinigungsflüssigkeit, in der Regel Wasser oder mit einer reinigungsfördernden Substanz versetztes Wasser, wird kontrolliert und in geringen Mengen in den Strömungskanal eingespritzt.According to the invention, small amounts of cleaning liquid are supplied to the flow channel of an exhaust gas turbine upstream of the guide device and of the rotor blades of the turbine wheel. As a result, the humidity of the exhaust gas is increased, whereby a cleaning or cleansing effect along the further flow path through the exhaust gas turbine is achieved. The cleaning liquid, usually water or water added with a cleansing substance, is controlled and injected in small quantities into the flow channel.
Dies geschieht erfindungsgemäss kontinuierlich oder aber periodisch getaktet während der gesamten Betriebszeit der Abgasturbine. Somit wird nicht mehr unterschieden zwischen Betriebsperiode und Reinigungsperiode und die Leistung der die Abgasturbine mit Abgasen beaufschlagenden Brennkraftmaschine braucht nicht mehr eigens für dasThis is done according to the invention continuously or periodically clocked during the entire operating time of the exhaust gas turbine. Thus, no distinction between operating period and cleaning period and the performance of the exhaust gas turbine with exhaust gases acting engine no longer needs specifically for the
Reinigen der Abgasturbine reduziert zu werden. Beim getakteten Einspritzen wird imCleaning the exhaust turbine to be reduced. When pulsed injection is in
Abstand von einigen Sekunden und für jeweils einige Sekunden Reinigungsflüssigkeit in den Strömungskanal eingespritzt.Spacing of a few seconds and each injected for a few seconds cleaning fluid into the flow channel.
Die Menge der eingespritzten Reinigungsflüssigkeit kann in Abhängigkeit etwa der Leistungsabgabe der Brennkraftmaschine oder des Abgasstromes variiert werden, so dass bei geringer Leistungsabgabe im Teillastbetrieb eine geringere Menge Reinigungsflüssigkeit eingespritzt wird als bei Volllastbetrieb. Vorteilhafterweise wird die Menge Reinigungsflüssigkeit proportional zur Motorleistung variiert. Beim getakteten Einspritzen kann die Menge der eingespritzten Reinigungsflüssigkeit bei gleich bleibendem Düsenstrahl auch durch variieren der Einspritzdauer bzw. der dazwischen liegenden Abstände gesteuert werden.The amount of the injected cleaning liquid can be varied depending on about the power output of the internal combustion engine or the exhaust gas flow, so that at low power output in partial load operation, a smaller amount of cleaning fluid is injected than at full load operation. Advantageously, the amount of cleaning liquid is varied in proportion to the engine power. When pulsed injection, the amount of the injected cleaning liquid can be controlled by varying the injection duration or the intervals between them with a constant jet.
Pro 1 m3/s Abgas werden beim erfindungsgemässen Verfahren etwa 0.1 bis max. 1.0 Liter Reinigungsflüssigkeit pro Minute in den Strömungskanal eingespritzt.Per 1 m 3 / s of exhaust gas in the inventive method about 0.1 to max. 1.0 liter of cleaning fluid injected into the flow channel per minute.
Nicht nur Dank der kontinuierlichen Einspritzung aber auch Dank der geringen Menge Reinigungsflüssigkeit und der damit verbundenen verbesserten Vermischung mit dem heissen Abgas können unerwünschte Thermospannungen bzw. Thermospannungsrisse vermieden werden. Zusätzliche thermische Entlastung wird dadurch erreicht, indem die Reinigungsflüssigkeit vor dem Einspritzen in den Strömungskanal aufgeheizt wird. Zum Aufheizen der
Reinigungsflüssigkeit wird vorteilhafterweise Restwärme aus dem Abgas der Brennkraftmaschine verwendet.Not only thanks to the continuous injection but also thanks to the small amount of cleaning fluid and the associated improved mixing with the hot exhaust undesirable thermal or thermal stress cracks can be avoided. Additional thermal relief is achieved by the cleaning liquid is heated prior to injection into the flow channel. To heat the Cleaning liquid is advantageously used residual heat from the exhaust gas of the internal combustion engine.
Im Einsatz als Abgasturbine eines Turboladers zum Aufladen der Brennkraftmaschine können mit dem erfindungsgemässen Reinigungsverfahren die Komponenten der Abgasturbine nachhaltig thermisch entlastet und Leistungsverluste des Turboladers und daraus folgende negative Einflüsse auf die Brennkraftmaschinen-betriebswerte reduziert oder ganz verhindert werden. Zudem entfallen periodische, den normalen Einsatz unterbrechende, durch die Einspritzung von hohen Mengen Reinigungsfiüssigkeiten bedingte Leistungsreduktionen der Brennkraftmaschine.
When used as an exhaust gas turbine of a turbocharger for charging the internal combustion engine, the components of the exhaust gas turbine can sustainably thermally relieved and power losses of the turbocharger and consequent negative influences on the engine operating values are reduced or completely prevented with the inventive cleaning method. In addition, eliminates periodic, the normal use interrupting, due to the injection of high amounts Reinigungsfiüssigkeiten power reductions of the internal combustion engine.
Claims
1. Reinigungsverfahren zum Reinigen einer mit Abgasen einer Brennkraftmaschine beaufschlagten Abgasturbine, wobei die Abgase in einem Strömungskanal auf die Laufschaufeln eines Turbinenrades geführt werden, bei welchem Reinigungsverfahren eine Reinigungsflüssigkeit den Strömungskanal eingespritzt wird, dadurch gekennzeichnet, dass im Betrieb der Abgasturbine unabhängig von Betriebspunkt der Brennkraftmaschine Reinigungsflüssigkeit in den Strömungskanal eingespritzt wird.1. Cleaning method for cleaning an exhaust gas charged with exhaust gases of an internal combustion engine, wherein the exhaust gases are guided in a flow channel on the blades of a turbine wheel, in which cleaning method, a cleaning fluid is injected into the flow channel, characterized in that during operation of the exhaust gas turbine independently of operating point of the internal combustion engine Cleaning fluid is injected into the flow channel.
2. Reinigungsverfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Reinigungsflüssigkeit kontinuierlich in den Strömungskanal eingespritzt wird.2. Cleaning method according to claim 1, characterized in that the cleaning liquid is injected continuously into the flow channel.
3. Reinigungsverfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Reinigungsflüssigkeit periodisch getaktet im Abstand von einigen Sekunden und für jeweils einige Sekunden in den Strömungskanal eingespritzt wird.3. Cleaning method according to claim 1, characterized in that the cleaning liquid is periodically clocked at intervals of a few seconds and injected for a few seconds in the flow channel.
4. Reinigungsverfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Menge der eingespritzten Reinigungsflüssigkeit variiert werden kann und abhängig von der jeweils momentan von der Brennkraftmaschine abgegebenen Leistung gewählt wird.4. Cleaning method according to one of claims 1 to 3, characterized in that the amount of the injected cleaning liquid can be varied and is selected depending on the current power delivered by the internal combustion engine.
5; Reinigungsverfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Reinigungsflüssigkeit vor dem Einspritzen in den Strömungskanal aufgeheizt wird.5; Cleaning method according to one of claims 1 to 4, characterized in that the cleaning liquid is heated prior to injection into the flow channel.
6. Reinigungsverfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Menge der eingespritzten Reinigungsflüssigkeit pro m3/s Abgas 0.1-1.0 Liter beträgt. 6. Cleaning method according to one of claims 1 to 5, characterized in that the amount of the injected cleaning liquid per m 3 / s of exhaust gas is 0.1-1.0 liters.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH15832005 | 2005-09-30 | ||
| PCT/CH2006/000514 WO2007036059A1 (en) | 2005-09-30 | 2006-09-22 | Turbine cleaning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1929128A1 true EP1929128A1 (en) | 2008-06-11 |
Family
ID=37441101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06775205A Withdrawn EP1929128A1 (en) | 2005-09-30 | 2006-09-22 | Turbine cleaning |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7828906B2 (en) |
| EP (1) | EP1929128A1 (en) |
| JP (1) | JP2009510308A (en) |
| KR (1) | KR20080050451A (en) |
| CN (1) | CN101300406B (en) |
| NO (1) | NO20081513L (en) |
| WO (1) | WO2007036059A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8041333B2 (en) * | 2007-06-14 | 2011-10-18 | Broadcom Corporation | Method and system for 60 GHz antenna adaptation and user coordination based on base station beacons |
| EP2071151A1 (en) * | 2007-12-12 | 2009-06-17 | Siemens Aktiengesellschaft | Method for cleaning turbine blades under operation conditions, corresponding turbine and turbocharger |
| EP2116696A1 (en) * | 2008-05-07 | 2009-11-11 | Napier Turbochargers Limited | Method for cleaning a component of a turbocharger under operating conditions and turbine of a turbocharger |
| US8602721B2 (en) * | 2009-12-02 | 2013-12-10 | Wartsila Finland Oy | Method of operating turbocharged piston engine |
| DE102011008649A1 (en) | 2011-01-14 | 2012-07-19 | Abb Turbo Systems Ag | turbine cleaning |
| US8347900B2 (en) * | 2011-04-05 | 2013-01-08 | Jensen dustin | Wind turbine fluid application apparatus |
| CN102493871B (en) * | 2011-12-14 | 2014-03-19 | 中国人民解放军海军后勤技术装备研究所 | Cleaning system and method, wet cleaning device and dry cleaning device for turbine supercharger |
| US9260968B2 (en) | 2012-04-25 | 2016-02-16 | General Electric Company | Systems and methods for reconditioning turbine engines in power generation systems |
| US8998567B2 (en) * | 2012-06-08 | 2015-04-07 | General Electric Company | Method, system and apparatus for enhanced off line compressor and turbine cleaning |
| CN105065117A (en) * | 2015-07-24 | 2015-11-18 | 江苏恒尚动力高科有限公司 | Turbocharger based on automatic cleaning device |
| CN108869032A (en) * | 2018-02-23 | 2018-11-23 | 孙远 | A kind of cleaning method of vehicle turbine pressure charging system |
| DE102020131735A1 (en) | 2020-11-30 | 2022-06-02 | Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen | Tubular structure with multi-component filament |
| CN117732791B (en) * | 2023-12-04 | 2024-05-28 | 无锡市广泰诚机械制造有限公司 | Circulation type detection method and system for volute cleaning |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH420472A (en) * | 1965-01-04 | 1966-09-15 | Bbc Brown Boveri & Cie | Process for preventing deposits in the flow path of turbo compressors |
| US4548040A (en) | 1984-05-11 | 1985-10-22 | Elliott Turbomachinery Company, Inc. | Method and apparatus for determining when to initiate cleaning of turbocharger turbine blades |
| DE19549142A1 (en) * | 1995-12-29 | 1997-07-03 | Asea Brown Boveri | Method and device for wet cleaning the nozzle ring of an exhaust gas turbocharger turbine |
| JP3547593B2 (en) * | 1997-09-01 | 2004-07-28 | 新潟原動機株式会社 | Exhaust turbine turbocharger structure |
-
2006
- 2006-09-22 KR KR1020087007578A patent/KR20080050451A/en not_active Application Discontinuation
- 2006-09-22 WO PCT/CH2006/000514 patent/WO2007036059A1/en active Application Filing
- 2006-09-22 EP EP06775205A patent/EP1929128A1/en not_active Withdrawn
- 2006-09-22 JP JP2008532556A patent/JP2009510308A/en active Pending
- 2006-09-22 CN CN2006800359287A patent/CN101300406B/en not_active Expired - Fee Related
-
2008
- 2008-03-18 US US12/050,743 patent/US7828906B2/en not_active Expired - Fee Related
- 2008-03-28 NO NO20081513A patent/NO20081513L/en not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007036059A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US7828906B2 (en) | 2010-11-09 |
| CN101300406B (en) | 2012-12-12 |
| KR20080050451A (en) | 2008-06-05 |
| CN101300406A (en) | 2008-11-05 |
| US20080210264A1 (en) | 2008-09-04 |
| WO2007036059A1 (en) | 2007-04-05 |
| NO20081513L (en) | 2008-03-28 |
| JP2009510308A (en) | 2009-03-12 |
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