Preface to the fourth German edition

Mayer, Ehrhard

doi:10.1016/b978-0-408-00307-0.50005-3

Cited by 10 publications

(17 citation statements)

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“…In terms of theoretical research, as early as the middle of the 20th century, Heinze [9], Mayer [10], Lebeck [11,12] et al carried out research on the prediction model for the leak rate of sealing interfaces. However, they all simplified the characterizations of the sealing surface topography and the leakage channels to various degrees, which consequently caused a large error between the calculated and the actual leak rates.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study of the Leakage Mechanism in Static Seals

Qiang

Chen

Huang³

et al. 2018

Applied Sciences

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This paper investigates the fluidic leak rate through sealing contact surfaces by comparison between model calculation and experiment measurement. The focus is on an experimental device designed to measure the leak rate of the static seals with a simpler structure, smaller errors, stronger stability, and more functions. Using the device, experiments were carried out to four test pieces with different surface characteristics, whose leak rates were measured separately. Compared with the calculation results obtained from the fractal surface leak rate prediction model, the correctness and the application range of the model were verified, and the effects of different surface topographies and material properties of the four test pieces on the leak rate were analyzed as well. The experimental device was also used to perform single-factor comparison experiments, which were then combined with the theoretical prediction model to analyze the effects of the sealing surface contact load, fluid pressure, and surface apparent size on the leak rate, so that theoretical support and experimental evidence for selecting the parameters of sealing device was provided.

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Section: Introductionmentioning

confidence: 99%

An Experimental Study of the Leakage Mechanism in Static Seals

Qiang

Chen

Huang³

et al. 2018

Applied Sciences

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“…Thermal stress resistance R T (8C) is the maximum temperature difference that can be tolerated without tensile failure. The product kR T is thus a measure of resistance to thermal shock and surface crazing and is sometimes approximated by k R T (7,8). To complete the picture requires a measure of the transient heat flux H (for a transient face rub this is fPV), while for transient cooling it depends on the heat transfer rate to the cold fluid.…”

Section: Thermal Propertiesmentioning

confidence: 99%

Mechanical seal face materials

Nau

1997

Proceedings of the Institution of Mechanical Engineers, Part J:

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Mechanical seal face materials are described with an explanation of the properties affecting performance and the significance of surface texture including bi-Gaussian surface statistics. Aspects of seal behaviour attributable to face materials are discussed in detail, including random fluctuations of friction and thermal excursions. Boundary lubrication mechanisms of carbon±graphites and other ceramics are described. The role of tribolayers and transfer layers is highlighted. Failure modes are discussed including structural fracture, surface crazing, pitting and scoring, blistering, solids deposition and`squeal' (`ringing'). Many references are given.

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“…4 Pressure±temperature curve for a light hydrocarbon (l. h.) seal, showing the reduced ÄT requirement Fig. 5 Finite element analysis of the emission control seal operate under regimes of mixed lubrication (partial film and partial asperity contact) and, since under these conditions the leakage is proportional to (film thickness) 2 [12], an area of high leakage will occur. Multipoint injection, as the name suggests,`injects' process fluid at a number of points around the circumference of the seal rather than from a single outlet.…”

Section: Seal Designmentioning

confidence: 99%

Design and selection of mechanical seals to minimize emissions

Bowden¹

1999

Proceedings of the Institution of Mechanical Engineers, Part J:

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The design of mechanical seals for applications requiring the control of fugitive emissions is reviewed. The paper discusses the features inherent in seal design and how these affect overall performance; it also examines the effect of materials of construction. Selection guidelines comparing various mechanical seal arrangements are included, these being based on operational experience in working plants. Significant events in the development of emission regulations and therefore modern sealing solutions are described.

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Preface to the fourth German edition

Cited by 10 publications

References 0 publications

An Experimental Study of the Leakage Mechanism in Static Seals

An Experimental Study of the Leakage Mechanism in Static Seals

Mechanical seal face materials

Design and selection of mechanical seals to minimize emissions

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