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Reglering av en flödeskalibreringsrigg
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
2006 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Automatic control of a flow calibration rig (English)
Abstract [sv]

Demag Delaval Industrial Turbomachinery (DDIT AB) i Finspång tillverkar gasturbiner.

I dessa finns det ledskenor/skovlar som arbetar i så varma områden att de måste kylas för att få rätt livslängd. Vid nytillverkning och reparation mäts kylflödet genom respektive skovel/ledskena för att säkerställa att flödet och därmed kylningen ligger inom tillåtna gränser. Mätningen görs med hjälp av en flödesrigg.

Denna rigg består av en ventil för inställning av luftflöde, utrustning för mätning och reglering av flödet och anslutning för den aktuella komponenten.

Vid DDIT har en datorreglerad flödesrigg tagits fram för att användas vid kontroll av ledskenor/skovlar. Riggen fungerar, men tryckregleringen behövde förbättras.

I detta arbete har reglerventilen och flödesriggen studerats för att kunna automatisera mätningarna. Olika reglermetoder har utvärderats.

För regleringen används PID Control Tools från National Instrument’s LabVIEW®. Rapporten beskriver de förarbeten som har gjorts, teorin, utrustningen, mätsystemet och den förklarar ändrade delar i det gamla programmet.

Abstract [en]

Demag Delaval Industrial Turbomachinery (DDIT AB) in Finspång manufactures gas turbines.

Some of the components such as shovels work in such a hot environment that they must be cooled down to get the right longevity. In order to produce and repare of the shovels, the flow that passes through them is measured to be sure that the flow and the cooling effect are in the acceptable limits.

A flowrig is a base for this work. The rig contains a valve which gives the air flow, equipment for measuring and controlling of flow and a connection for the used component.

DDIT has a flowrig which is used to do the measurment on the shovels. The rig works but the pressure control should be improved.

In this work the valve and the flowrig have been studied in order to automates the measurements. Different control methods have been evaluated. The software for the measurements has been developed using National Instrument’s LabVIEW®.

The report describes the introductory work that has been done, the theory, the equipment, the measuring system and it explains the changed part of the old program.

Place, publisher, year, edition, pages
2006. , 36 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-97187ISRN: LITH-ITN-EX--06/019--SEOAI: oai:DiVA.org:liu-97187DiVA: diva2:650243
Subject / course
Automatic Control
Supervisors
Examiners
Available from: 2013-09-20 Created: 2013-09-04 Last updated: 2013-09-20Bibliographically approved

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CiteExportLink to record
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