Skip to main content
Weiter zur Homepage der Europäischen Kommission (öffnet in neuem Fenster)
Deutsch Deutsch
CORDIS - Forschungsergebnisse der EU
CORDIS
Inhalt archiviert am 2024-04-19

ADVANCED AND PREVENTIVE DIAGNOSTICS OF FLUID HANDLING ROTATING MACHINERY USING ARTIFICIAL ROTOR EXCITATION AND DYNAMIC PARAMETER IDENTIFICATION TECHNIQUES

Ziel


Under task 1 a database was set-up, holding information on installed rotating equipment, failures and corrective actions taken. This database was used for generating specifications for future online diagnostic capabilities.

Task 2 comprised several subtasks. Under this task, new online identification techniques were developed, including inverse force and inverse pressure identification methods. Furthermore rotor crack detection and nonlinear rotor system identification techniques were investigated. This included the development of rotordynamic models suitable for simulating and predicting rotor dynamic behaviour.

Under task 3 potential-flow fluid models for motion dependent interaction forces have been developed. In particular, zeroth and first order models for high-specific-speed impellers have been built and compared to experimental data. The models predict the forces on rotating and whirling impellers, incorporating impeller tip/ volute flow interaction.

Task 4 was divided into two subtasks. The first subtask concerned hybrid bearing testing, in which rotordynamic coefficients of a hybrid bearing assembly were identified by means of a component tester suspended on active magnetic bearings. The second subtask dealt with the rotordynamic identification of coefficients of a high-specific-speed impeller in a so-called free-impeller set up, as well as in a real pump/volute configuration. Furthermore, pressure pulsation identification measurements were performed.

Task 5 focused on the development of exciter technology, which resulted into a conceptual design of a prototype artificial (portable) field exciter. Under task 6 an existing boiler-feed-pump test rig was modified to allow experimental verification. An important modification was the change of suspension of the active magnetic bearings, so that rotor-bearing forces could be measured directly by load cells. In addition, another indirect force measurement technique was installed based on flux sensing.

Task 7 hosted the experiments on the boiler feed pump. Both inverse force as inverse pressure identification methods were tested. Furthermore, rotor modal analysis techniques were investigated.

Under task 8 two different diagnostic schemes have been developed. The first scheme is appropriate to tackle problems with existing machines, whereas the second scheme is meant to be used for monitoring of newly installed units.

Task 9 reviewed the diagnostic capabilities. The experimental rotor modal analysis proved to be technically feasible, as was demonstrated by the tests on the boiler feed pump with active magnetic bearings. It is also capable to detect and quantify casing resonance. The method is sensitive to rotor defects such as increased wear-ring clearances. The inverse pressure transfer technique allows to identify a pump as an acoustic two-port.

Task 10 hosted the field experiments. A portable electro-magnetic artificial exciter was designed, build, and subsequently used on the booster and the main pump of a (power-station) boilerfeed pump train. It turned out to be very difficult to introduce artificial excitations into the shaft of the booster, and obtain corresponding vibration responses. For the main pump the excitations tests were, however, rather good. Frequency response functions showing resonance at two frequencies could be obtained using artificial rotor excitation.
The increased requirements for safe, undisturbed, and pollution free operation of chemical and petrochemical processing plants, off-shore installations, gas and oil pipeline networks, and conventional and nuclear power plants have urged the need for effective condition monitoring/diagnostic systems for the rotating equipment applied in these plants. Present 'state-of-the-art' condition monitoring and diagnostic systems are based on vibration signature verified against truth tables. Current systems are based on general 'domain expertise' and therefore do not account for individual characteristics of the machine and deliver multi-valued conclusions with a likelihood ranking. Especially because of the last aspect such a monitoring diagnostic system will not be the required firm basis for making maintenance decisions.

The objective of the proposed project is to develop model based interpretation methods, complementary to the existing signature analysis techniques, for the various malfunctions occurring in rotating equipment based on the quantitative detection of the dynamic phenomena inside the various parts of machines. Because most condition parameters cannot be measured directly, indirect measuring techniques will be developed and new system identification techniques will be applied. This requires the use of artificial rotor excitation. Also new in the project is development of mechanical seal monitoring and diagnostics techniques.

The model based interpretation methods will applicable to all types of rotating machinery. However this project will demonstrate the methods for fluid handling rotating machinery used in power generation and petrochemical industry.

Wissenschaftliches Gebiet (EuroSciVoc)

CORDIS klassifiziert Projekte mit EuroSciVoc, einer mehrsprachigen Taxonomie der Wissenschaftsbereiche, durch einen halbautomatischen Prozess, der auf Verfahren der Verarbeitung natürlicher Sprache beruht. Siehe: Das European Science Vocabulary.

Sie müssen sich anmelden oder registrieren, um diese Funktion zu nutzen

Programm/Programme

Mehrjährige Finanzierungsprogramme, in denen die Prioritäten der EU für Forschung und Innovation festgelegt sind.

Thema/Themen

Aufforderungen zur Einreichung von Vorschlägen sind nach Themen gegliedert. Ein Thema definiert einen bestimmten Bereich oder ein Gebiet, zu dem Vorschläge eingereicht werden können. Die Beschreibung eines Themas umfasst seinen spezifischen Umfang und die erwarteten Auswirkungen des finanzierten Projekts.

Aufforderung zur Vorschlagseinreichung

Verfahren zur Aufforderung zur Einreichung von Projektvorschlägen mit dem Ziel, eine EU-Finanzierung zu erhalten.

Daten nicht verfügbar

Finanzierungsplan

Finanzierungsregelung (oder „Art der Maßnahme“) innerhalb eines Programms mit gemeinsamen Merkmalen. Sieht folgendes vor: den Umfang der finanzierten Maßnahmen, den Erstattungssatz, spezifische Bewertungskriterien für die Finanzierung und die Verwendung vereinfachter Kostenformen wie Pauschalbeträge.

CSC - Cost-sharing contracts

Koordinator

BW/IP INTERNATIONAL BV
EU-Beitrag
Keine Daten
Adresse
PARALLELWEG,6
4878 AH ETTEN LEUR
Niederlande

Auf der Karte ansehen

Gesamtkosten

Die Gesamtkosten, die dieser Organisation durch die Beteiligung am Projekt entstanden sind, einschließlich der direkten und indirekten Kosten. Dieser Betrag ist Teil des Gesamtbudgets des Projekts.

Keine Daten

Beteiligte (6)

Mein Booklet 0 0