NO339009B1 - System and method for monitoring the physical state of an exhaust system - Google Patents
System and method for monitoring the physical state of an exhaust system Download PDFInfo
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- NO339009B1 NO339009B1 NO20141565A NO20141565A NO339009B1 NO 339009 B1 NO339009 B1 NO 339009B1 NO 20141565 A NO20141565 A NO 20141565A NO 20141565 A NO20141565 A NO 20141565A NO 339009 B1 NO339009 B1 NO 339009B1
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- 238000012544 monitoring process Methods 0.000 title claims description 23
- 238000000034 method Methods 0.000 title claims 9
- 230000033001 locomotion Effects 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 claims description 3
- 238000004817 gas chromatography Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 39
- 238000007689 inspection Methods 0.000 description 8
- 238000011084 recovery Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater 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
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Description
Oppfinnelsen angår et system for å overvåke avgass-systemer. The invention relates to a system for monitoring exhaust gas systems.
I løpet av de siste to tiår har bruksområdene for gassturbiner økt betraktelig. Dette skyldes deres raske tilgjengelighet, kompakthet (i vekt og plassbehov) og høy termisk effektivitet. For at turbinen skal kunne arbeide på sitt maksimum, er det nødvendig å ha pålitelige avgass-systemer hvor avgassene fra gassturbinen enten kan benyttes i spillvarmegjennvinningskjeler eller bli ledet gjennom bypass-systemer til omgivelsesluft. De samme kravene til avgass-systemer er gyldig også for andre typer motorer. During the last two decades, the areas of use for gas turbines have increased considerably. This is due to their quick availability, compactness (in terms of weight and space requirements) and high thermal efficiency. In order for the turbine to be able to work at its maximum, it is necessary to have reliable exhaust gas systems where the exhaust gases from the gas turbine can either be used in waste heat recovery boilers or be led through bypass systems to ambient air. The same requirements for exhaust systems also apply to other types of engines.
Over de siste 10-15 årene, har materialvalg og utformingsbasis blitt spesifisert i «Requests for Quotations and Technical Requisitions» utlevert til avgass-system-leverandører. Over the past 10-15 years, material selection and design basis have been specified in "Requests for Quotations and Technical Requisitions" issued to exhaust system suppliers.
Driftserfaringer viser imidlertid at disse avgass-systemene ikke yter som forventet og påkrevd. Noen opplevde problemer med slike systemer er for eksempel: Operating experience shows, however, that these exhaust gas systems do not perform as expected and required. Some perceived problems with such systems are, for example:
• Sprekker i avgasskanaler • Cracks in exhaust ducts
• Sprekker i belger • Cracks in pods
• Isolasjonsfibre forsvinner inne i avgasskanalene. • Insulation fibers disappear inside the exhaust ducts.
• Korrosjon i spillvarmegjennvinningsenheter (Corrosion in waste heat recovery units (WHRU)) og i avgasskanaler. • Corrosion in waste heat recovery units (WHRU) and in exhaust ducts.
• Slitasje/gnidning mellom deler på grunn av vibrasjoner. • Wear/rubbing between parts due to vibrations.
• Turbulente strømninger danner vibrasjoner som forårsaker utmatting, bolter løsner og pakninger ryker. • Termisk stress kombinert med vibrasjoner fører til utmatting og sprekkforplanting. • Internt varmeisolasjons- og lyddempingsmateriale løsner på grunn av vibrasjoner kombinert med høyde temperaturer. • Små lekkasjer i oljerør i WHRU forårsaker brann etter at generator er stengt ned. • Turbulent flows create vibrations that cause fatigue, loosening of bolts and bursting of gaskets. • Thermal stress combined with vibrations leads to fatigue and crack propagation. • Internal thermal insulation and sound dampening material loosens due to vibrations combined with high temperatures. • Small leaks in oil pipes in the WHRU cause a fire after the generator is shut down.
• Løse indre deler "flyr" ut av avgasskanal. • Loose internal parts "fly" out of the exhaust duct.
• Flensbolter løsner og kan falle av. • Flange bolts loosen and may fall off.
Slike problemer vil forkorte levetiden til avgass-systemene, forårsake uventet nedetid for vedlikehold, noe som er svært kostbart og kontraproduktivt. Such problems will shorten the life of the exhaust systems, cause unexpected downtime for maintenance, which is very costly and counterproductive.
For å avhjelpe disse problemene, er det inspeksjonsprogrammer hvor en operatør visuelt inspiserer avgass-systemet og ser etter mulige feil, eller regelmessig erstatter deler som er kjent å være utsatt for feil. Imidlertid kan det skje at slike inspeksjoner ikke oppdager problemer som ikke er synlige for øyet, og som kan oppstå mellom inspeksjoner. To remedy these problems, there are inspection programs where an operator visually inspects the exhaust system for possible faults, or regularly replaces parts that are known to be prone to faults. However, such inspections may not detect problems that are not visible to the eye and may occur between inspections.
Det er derfor et behov for et system for å overvåke avgass-systemer mer regelmessig, for å kunne forutse problemer og mulige feil før de skjer, og dermed minimalisere nedetid og kostnader forbundet med nedetid. There is therefore a need for a system to monitor exhaust gas systems more regularly, to be able to anticipate problems and possible failures before they occur, thus minimizing downtime and costs associated with downtime.
Hensikten med oppfinnelsen er å møte dette behovet. The purpose of the invention is to meet this need.
Hensikten med oppfinnelsen oppnås ved hjelp av trekkene i patentkravene. The purpose of the invention is achieved by means of the features of the patent claims.
I en utførelse, omfatter et overvåkningssystem for å overvåke den fysiske statusen til et avgass-system forbundet med en motor et antall sensorer plassert på ett eller flere valgte steder i avgass-systemet. Sensorene kan generere datasignaler relatert til en eller flere variable målt på de valgte stedene, for å evaluere tilstanden til avgass-systemet. In one embodiment, a monitoring system for monitoring the physical status of an exhaust system associated with an engine comprises a number of sensors located at one or more selected locations in the exhaust system. The sensors can generate data signals related to one or more variables measured at the selected locations, to evaluate the condition of the exhaust gas system.
Minst noen av sensorene er valgt fra temperatursensorer, vibrasjonssensorer, belastningssensorer, bevegelsessensorer eller en kombinasjon av disse. At least some of the sensors are selected from temperature sensors, vibration sensors, load sensors, motion sensors or a combination thereof.
Motoren kan være en hvilken som helst type forbrenningsmotor, slik som en gassturbin, jetmotor, dampmotor, dieselmotor, etc. Systemet i henhold til oppfinnelsen er spesielt nyttig i store industrimotorer hvor all nedetid forårsaker stopp i produksjonen og etterfølgende tapt inntekt. The engine can be any type of internal combustion engine, such as a gas turbine, jet engine, steam engine, diesel engine, etc. The system according to the invention is particularly useful in large industrial engines where any downtime causes a stop in production and subsequent lost income.
I en utførelse er motoren en gassturbin og avgass-systemet er forbundet med forbrenningsutløpet fra gassturbinen. In one embodiment, the engine is a gas turbine and the exhaust system is connected to the combustion outlet from the gas turbine.
Et avgass-system omfatter et antall deler avhengig av hva motoren er forbundet til, slik som avgassoppsamler, avgassoverføringskanal, generell avgassledning, en avgasskanal, forbindelsesflens, belg, varmegjenvinningsdampgenerator, avgassdiffuser, avlederdemper og en bypass-stabel med lyddemper. Andre konfigurasjoner er også mulig, men den bestemte konfigurasjonen til avgass-systemet er ikke viktig for at systemet i henhold til oppfinnelsen skal virke. An exhaust system includes a number of parts depending on what the engine is connected to, such as an exhaust manifold, exhaust transfer duct, general exhaust line, an exhaust duct, connecting flange, bellows, heat recovery steam generator, exhaust diffuser, diverter silencer and a bypass stack with silencer. Other configurations are also possible, but the specific configuration of the exhaust system is not important for the system according to the invention to work.
Sensorene er anordnet på stedene i avgass-systemet for å overvåke elementer av avgass-systemet hvor feil kan oppstå. Antall sensorer kan variere i henhold til forventede belastninger både fra miljø og drift av motoren. Eksempler på variabler som kan måles av sensorene er: The sensors are arranged at the points in the exhaust gas system to monitor elements of the exhaust gas system where errors can occur. The number of sensors can vary according to expected loads both from the environment and operation of the engine. Examples of variables that can be measured by the sensors are:
- Overflatetemperatur i avgasskanal (for eksempel 5 forskjellige steder), - Surface temperature in exhaust duct (e.g. 5 different places),
- Vibrasjon (for eksempel 5 forskjellige steder), - Vibration (for example 5 different places),
- Bevegelse av belger (for eksempel 4 forskjellige steder i to retninger), - Movement of pods (for example 4 different places in two directions),
- Bevegelse i støtter (for eksempel 4 forskjellige steder i to retninger), - Movement in supports (for example 4 different places in two directions),
- Lokal belastning i kritiske steder (for eksempel 5 forskjellige steder), - Local load in critical locations (e.g. 5 different locations),
- Hydrokarboninnhold i avgass (for eksempel etter WHRU (waste heat recovery unit)). - Hydrocarbon content in exhaust gas (for example after WHRU (waste heat recovery unit)).
Andre sensorer og variabler kan selvfølgelig også benyttes i henhold til det spesifikke avgass-systemet og det krav. Other sensors and variables can of course also be used according to the specific exhaust system and requirements.
I en utførelse er det anordnet minst en inspeksj onsport i avgass-systemet for boroskopundersøkelse av interessante steder. Et boroskop er en optisk anordning for å observere objekter, med et stivt eller fleksibelt rør med et okular eller annen visningsinnretning eller avbildningsinnretning i en ende, en objektivlinse i den andre enden forbundet sammen ved et optisk overføringssystem mellom endene. Boroskopet kan også omfatte en lyskilde, for eksempel overført gjennom optiske fibre benyttet for å belyse objektet som skal observeres. Et indre bilde av det belyste objektet dannes av objektivlinser og forstørres før det presenteres til seeren. Boroskoper kan være stive eller fleksible og kan ha en avbildningsanordning eller en videoinnretning. De fangede bildene eller videoene kan overføres til en prosesseringsanordning for evaluering eller prosessering av bildene. In one embodiment, at least one inspection port is arranged in the exhaust gas system for borescope examination of places of interest. A borescope is an optical device for observing objects, with a rigid or flexible tube with an eyepiece or other viewing or imaging device at one end, an objective lens at the other end connected together by an optical transmission system between the ends. The borescope can also include a light source, for example transmitted through optical fibers used to illuminate the object to be observed. An internal image of the illuminated object is formed by objective lenses and magnified before being presented to the viewer. Borescopes can be rigid or flexible and can have an imaging device or a video device. The captured images or videos may be transferred to a processing device for evaluation or processing of the images.
Steder av interesse for boroskopinspeksjon kan være isolasjonsforing, hele og perforerte plater, ekspensjonsbelger og flensoverflater i områder med store belastninger fra virvler og pulseringer. Inspeksjonsportene er anordnet i avgass-systemet for å gi synlig tilgang til disse stedene. I en utførelse er boroskoper forbundet til den minst ene porten I avgass-systemet for kontinuerlig eller ofte å registrere bilder av de interessante stedene. Places of interest for borescope inspection may be insulation lining, whole and perforated plates, expansion bellows and flange surfaces in areas with high loads from vortices and pulsations. The inspection ports are arranged in the exhaust system to provide visible access to these places. In one embodiment, borescopes are connected to the at least one port in the exhaust system to continuously or frequently record images of the points of interest.
I en utførelse omfatter overvåkningssystemet videre en gasskromatograf anordnet på utsiden eller innsiden av en avgasskanal for å detektere komponenter av avgass-strømmen. Andre mulige steder for en gasskromatograf kan være nedstrøms WHRU-en. Deteksjonen av komponentene i avgassen kan gi verdifull informasjon om driftsstatusen til motoren forbundet med avgass-systemet så vel som statusen til avgass-systemet selv. For eksempel kan ufullstendig forbrenning eller lekkasjer gi opphav til økt brannfare etter nedstengning av motor og system. Tidlig deteksjon av slike hendelser gir operatøren eller systemet selv muligheten til å foreta nødvendige handlinger før fare oppstår. In one embodiment, the monitoring system further comprises a gas chromatograph arranged on the outside or inside of an exhaust gas channel to detect components of the exhaust gas stream. Other possible locations for a gas chromatograph could be downstream of the WHRU. The detection of the components in the exhaust can provide valuable information about the operating status of the engine connected to the exhaust system as well as the status of the exhaust system itself. For example, incomplete combustion or leaks can give rise to an increased risk of fire after shutting down the engine and system. Early detection of such events gives the operator or the system itself the opportunity to take the necessary actions before danger occurs.
Overvåkningssystemet kan videre omfatte en prosessor for å motta datasignaler fra sensorene og sammenligne datasignaler med en forhåndsbestemt feilverditerskel for å forutse feil eller kommende feil ved det spesifikke stedet i avgass-systemet. Deteksjon av en feil eller kommende feil kan for eksempel trigge en alarm. Prosessoren kan være programmert med et program som har en modulær design for å være i stand til å tilpasse prosesseringen til å passe til de spesifikke installasjonene med forskjellige krav. The monitoring system may further comprise a processor to receive data signals from the sensors and compare data signals with a predetermined error value threshold to predict errors or upcoming errors at the specific location in the exhaust system. Detection of an error or upcoming error can, for example, trigger an alarm. The processor can be programmed with a program that has a modular design to be able to adapt the processing to suit the specific installations with different requirements.
Datasignalene kan overføres til et fjerntliggende sted for online overvåkning via en kablet eller trådløs ethernetforbindelse. Det kan også, i tillegg til eller alternativt, være en lagringsenhet knyttet til sensorene for å lagra datasignalene relatert til variablene målt i de valgte lokasjonene. De lagrede data kan benyttes senere for analyseformål slik som å sammenligne måleverdier med designdata for å detektere utvikling av degradering av systemet over tid, evaluering og bestemmelse av optimale serviceintervaller for avgass-systemet, forberede undersøkelsesrapporter til systemeieren, etc. De lagrede data kan også benyttes for fremtidig utforming av avgass-system, tilveiebringe input på hvilke deler som først degraderes, levetid for ulike deler, etc. The data signals can be transmitted to a remote location for online monitoring via a wired or wireless Ethernet connection. There may also, in addition to or alternatively, be a storage unit associated with the sensors to store the data signals related to the variables measured in the selected locations. The stored data can be used later for analysis purposes such as comparing measured values with design data to detect the development of degradation of the system over time, evaluation and determination of optimal service intervals for the exhaust gas system, preparing survey reports for the system owner, etc. The stored data can also be used for the future design of the exhaust system, providing input on which parts are degraded first, lifetime of various parts, etc.
Operatøren kan tolke overvåkningsdataene, i sann tid eller på et senere tidspunkt basert på lagrede data, og planlegge inspeksjon og vedlikehold basert på dataene. En undersøkelsesrapport vedlikeholdsplan kan dermed regelmessig presenteres for systemeieren. En slik rapport kan typisk inneholde: The operator can interpret the monitoring data, in real time or at a later time based on stored data, and plan inspection and maintenance based on the data. A survey report maintenance plan can thus be regularly presented to the system owner. Such a report can typically contain:
- Observasjoner, f.eks. avvik fra normal drift - Observations, e.g. deviation from normal operation
- Analyse av årsak til observerte avvik - Analysis of the cause of observed deviations
- Anbefalte handlinger, på kort og lang sikt - Recommended actions, in the short and long term
- Anbefalt inspeksjonsplan - Recommended inspection plan
- Tids- og ressursplan for foreslåtte handlinger - Time and resource plan for proposed actions
- Behov for reservedeler og forbruksvarer for foreslåtte handlinger - Need for spare parts and consumables for proposed actions
- Preventive handlinger for å unngå gjentatte feil - Preventive actions to avoid repeated errors
- Trendanalyse for data for å estimere levetid for komponenter - Trend analysis of data to estimate lifetime of components
Oppfinnelsen vil nå beskrives mer detaljert, ved hjelp av eksempel, og med referanse til de medfølgende figurene. Figur 1 illustrerer skjematisk et eksempel på et avgass-system som et overvåkningssystem i henhold til oppfinnelsen kan brukes til. The invention will now be described in more detail, by way of example, and with reference to the accompanying figures. Figure 1 schematically illustrates an example of an exhaust gas system for which a monitoring system according to the invention can be used.
Figur 2 illustrerer et avgass-system for en gassturbin. Figure 2 illustrates an exhaust gas system for a gas turbine.
I figur 1 er det illustrert et avgass-system 10 for en gassturbin 11. Et overvåkningssystem kan forbindes til et slikt avgass-system for å overvåke den fysiske statusen til avgass-systemet. Avgass-systemet omfatter kanaler 15, 19, forbundet ved forbindelser, hvor kanalene leder avgassene fra gassturbin 11 ut til omgivelsene. Det er flere plasser gjennom avgass-systemet som er utsatt for feil på grunn av slitasje forårsaket av vibrasjoner, temperaturendringer, kjemisk abrasjon, etc. Overvåkningssystemet forbundet med dette avgass-systemet omfatter et antall sensorer 14, 15, 19 plassert ved ulike posisjoner i avgass-systemet. Sensorene genererer datasignaler relatert til en eller flere variabler målt i de valgte posisjonene, og datasignalene kan bli benyttet for å evaluere tilstanden til avgass-systemet. Sensorene er for eksempel temperatursensorer, vibrasjonssensorer, belastningssensorer, bevegelsessensorer eller en kombinasjon av disse. In figure 1, an exhaust gas system 10 for a gas turbine 11 is illustrated. A monitoring system can be connected to such an exhaust gas system to monitor the physical status of the exhaust gas system. The exhaust gas system comprises ducts 15, 19, connected by connections, where the ducts lead the exhaust gases from gas turbine 11 out to the surroundings. There are several places throughout the exhaust gas system that are prone to failure due to wear and tear caused by vibrations, temperature changes, chemical abrasion, etc. The monitoring system associated with this exhaust gas system comprises a number of sensors 14, 15, 19 placed at various positions in the exhaust gas - the system. The sensors generate data signals related to one or more variables measured in the selected positions, and the data signals can be used to evaluate the condition of the exhaust system. The sensors are, for example, temperature sensors, vibration sensors, load sensors, motion sensors or a combination of these.
Det kan være mer enn en sensor for å måle samme verdi på ulike posisjoner. For eksempel kan de følgende verdiene måles; overflatetemperatur i avgasskanal (for eksempel 5 forskjellige steder), vibrasjon (for eksempel 5 forskjellige steder), bevegelse i belger (for eksempel 4 forskjellige steder i to retninger), bevegelser i støtter (for eksempel 4 forskjellige steder i to retninger), og/eller belastning i kritiske posisjoner (for eksempel 5 forskjellige steder). There can be more than one sensor to measure the same value at different positions. For example, the following values can be measured; surface temperature in exhaust duct (for example 5 different places), vibration (for example 5 different places), movement in bellows (for example 4 different places in two directions), movements in supports (for example 4 different places in two directions), and/ or load in critical positions (for example 5 different places).
Figur 2 viser et annet eksempel på et avgass-system 30 for gassturbin 31.1 dette eksempelet omfatter avgass-systemet en spillvannsvarmegjenvinningsenhet (WHRU) 36 i bypass. Bypass deles fra hovedrøret ved hjelp av en diverter 35, for eksempel en multilouvre diverter og omfatter en WHRU avløpssump for varm olje 36 og en bypass-kanal 38'. Bypass-kanalen 38' kan motta kontinuerlig en del av avgass-strømmen. Overvåkningssystemet kan i denne utførelsen omfatte sensorer 32, 33 i bypass-kanalen 38' så vel som ytterligere sensorer. Sensorene i bypass-kanalen kan for eksempel være en temperatursensor 32 og en kasskromatograf 33. Gasskromatografen analyserer avgassen kontinuerlig, og kan for eksempel detektere komponenter av varm olje. Figure 2 shows another example of an exhaust gas system 30 for gas turbine 31.1 this example, the exhaust gas system includes a waste water heat recovery unit (WHRU) 36 in bypass. Bypass is divided from the main pipe by means of a diverter 35, for example a multilouvre diverter and comprises a WHRU drain sump for hot oil 36 and a bypass channel 38'. The bypass channel 38' can continuously receive part of the exhaust gas flow. In this embodiment, the monitoring system can include sensors 32, 33 in the bypass channel 38' as well as further sensors. The sensors in the bypass channel can, for example, be a temperature sensor 32 and a box chromatograph 33. The gas chromatograph continuously analyzes the exhaust gas, and can, for example, detect components of hot oil.
Claims (12)
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7336862B1 (en) * | 2007-03-22 | 2008-02-26 | General Electric Company | Fiber optic sensor for detecting multiple parameters in a harsh environment |
| US20090120067A1 (en) * | 2007-11-12 | 2009-05-14 | Ford Global Technologies, Llc | Hydrocarbon Retaining System and Method |
| US20120082181A1 (en) * | 2010-09-07 | 2012-04-05 | Zaid Alnaqash | Temperature Sensor |
| US20130298642A1 (en) * | 2012-05-08 | 2013-11-14 | Logimesh IP, LLC | Remote air monitoring array system |
-
2014
- 2014-12-29 NO NO20141565A patent/NO339009B1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7336862B1 (en) * | 2007-03-22 | 2008-02-26 | General Electric Company | Fiber optic sensor for detecting multiple parameters in a harsh environment |
| US20090120067A1 (en) * | 2007-11-12 | 2009-05-14 | Ford Global Technologies, Llc | Hydrocarbon Retaining System and Method |
| US20120082181A1 (en) * | 2010-09-07 | 2012-04-05 | Zaid Alnaqash | Temperature Sensor |
| US20130298642A1 (en) * | 2012-05-08 | 2013-11-14 | Logimesh IP, LLC | Remote air monitoring array system |
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| Publication number | Publication date |
|---|---|
| NO20141565A1 (en) | 2016-06-30 |
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