An Investigation of Pulsations in the Boiler Feed System of a Central Power Station

Dussourd, J. L.

doi:10.1115/1.3605204

Cited by 8 publications

(4 citation statements)

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“…9,31,32 Rotating stall may also resonate with an acoustic mode of the inlet piping system, leading to greater pulsations of the whole system. For example, Dussourd 39 identiEed such kind of vibrations in a boiler feeding system. For a comprehensive review of rotating stall, readers are referred to Greitzer.…”

Section: Basics Of Rotating Stallmentioning

confidence: 99%

A review of rotating stall in reversible pump turbine

Zhang

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

133

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Currently, operations of reversible pump turbines in pumped hydro energy storage plant suffer great instability problems in the well-known S-shaped characteristic regions, leading to the failure of start, significant pressure fluctuations, and severe vibrations of the whole system. One of the physical origins of the above instability of reversible pump turbines is the rotating stall phenomenon generated at off-design conditions in generating mode. In this review, recent studies on the rotating stall of reversible pump turbines are critically reviewed with a focus on the generating mode. In reversible pump turbine, the rotating stall initiates at runaway and is fully developed at low discharge condition with characteristic rotating frequency being 50-70% of the impeller rotational frequency. Notorious effects induced by rotating stall include generation of large pressure fluctuation, channel blockage, and strong backflow, all of which contribute significantly to the instability of reversible pump turbine. Methods for identification of rotating stall are also introduced with plenty of examples. Finally, several suggestions on the future work are given and discussed.

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Section: Basics Of Rotating Stallmentioning

confidence: 99%

A review of rotating stall in reversible pump turbine

Zhang

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

133

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“…Dussourd (1968) identified such a problem in a boiler feed system where the rotating stall frequency was in the range 0.15 ? Dussourd (1968) identified such a problem in a boiler feed system where the rotating stall frequency was in the range 0.15 ?…”

Section: Rotating Stallmentioning

confidence: 99%

Vibration of Hydraulic Machinery

Wu¹,

Sheng-cai²,

Qian³

et al. 2013

Mechanisms and Machine Science

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“…51 and described in the section on pressure drop oscillations. Other references on the general topic are [175] which gives a discussion of pulsations in the boiler feed system of a pumping station due to rotating stall in one of the pumps, [176] which presents graphic descriptions of some of the consequences of instabilities in power stations, and [177] which discusses large amplitude low frequency pulsations which occur in centrifugal pumping systems.…”

Section: Self-excited Oscillations In Hydraulic Systems and Othementioning

confidence: 99%

The Stability of Pumping Systems—The 1980 Freeman Scholar Lecture

Greitzer

1981

Journal of Fluids Engineering

284

131

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A review is presented of the types of instabilities which are encountered in pumping systems of technological interest. These include axial and centrifugal compression systems, pumping systems involving cavitation, systems with two-phase flow, systems with combustion, hydraulic systems, and systems which have two or more pumping elements in parallel. All of the above will be seen to exhibit instabilities under certain operating conditions, although the mechanism of instability, as well as the particular system element that is responsible for the instability, will be quite different in the different systems. However, several basic concepts, such as the idea of negative damping which is associated with dynamic instability, will be seen to be common to the different systems. The review is organized around the different types of systems that are discussed, and includes descriptions of the steady-state performance, the regimes in which one would expect instability, and the mechanisms of instability. An idealized pumping system is first examined to illustrate some of the basic concepts. More realistic systems are then treated in the same manner of showing steady-state performance, regimes of instability and mechanisms. In the review attention is given mainly to those areas in which there is high current engineering interest, and an attempt is made to describe those areas of research which can be most fruitfully pursued. In general, it is suggested that efforts should be directed toward obtaining an improved understanding of the transient behavior of the active (instability causing) elements within the system, since it is lack of knowledge of this aspect that currently limits the accuracy of system stability predictions.

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An Investigation of Pulsations in the Boiler Feed System of a Central Power Station

Cited by 8 publications

References 0 publications

A review of rotating stall in reversible pump turbine

A review of rotating stall in reversible pump turbine

Vibration of Hydraulic Machinery

The Stability of Pumping Systems—The 1980 Freeman Scholar Lecture

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