Tap Water as a Hydraulic Pressure Medium

Trostmann, Erik

doi:10.1201/9781482270792

Cited by 25 publications

(17 citation statements)

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“…The speed of sound in mineral oil in the pressure range of 0-1400 bar and the temperature range of 10-121˝C is shown in Figure 21 [45]. An increase in temperature could lead to a decrease of the magnitude of the acoustic wave within the test sample.…”

Section: Environment Temperaturementioning

confidence: 99%

Progress of Space Charge Research on Oil-Paper Insulation Using Pulsed Electroacoustic Techniques

et al. 2016

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This paper focuses on the space charge behavior in oil-paper insulation systems used in power transformers. It begins with the importance of understanding the space charge behavior in oil-paper insulation systems, followed by the introduction of the pulsed electrostatic technique (PEA). After that, the research progress on the space charge behavior of oil-paper insulation during the recent twenty years is critically reviewed. Some important aspects such as the environmental conditions and the acoustic wave recovery need to be addressed to acquire more accurate space charge measurement results. Some breakthroughs on the space charge behavior of oil-paper insulation materials by the research team at the University of Southampton are presented. Finally, future work on space charge measurement of oil-paper insulation materials is proposed.

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Section: Environment Temperaturementioning

confidence: 99%

Progress of Space Charge Research on Oil-Paper Insulation Using Pulsed Electroacoustic Techniques

et al. 2016

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“…By transferring energy from liquid to piston, it moves, and the fluid energy is converted to mechanical energy for use. The hydraulic system's main components are as follows [24]:…”

Section: Hydraulic Systemmentioning

confidence: 99%

A Technical Review on Development of an Advanced Electromechanical System

2020

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Development of an advanced electromechanical system requires a blend of technical expertise and knowledge, from electrical and mechanical engineering to software and system engineering. Engineers working in this field must be able to understand and analyze the interrelated electrical and mechanical components, as well as computer controlling programs, to communicate with each system part. In this paper, we aim to review the requirements and technical knowledge for development of these new technologies.

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“…where is the fluid density, a function of the pressure. 28 Q out consists of three parts: the flow through the fixed orifice (Figure 3), the flow through the triangular grooves ( Figure 2) and the internal leakages of the WHIGP. The flow through the fixed orifice yields…”

Section: The Gear Partmentioning

confidence: 99%

Numerical analysis of the lubricating gap between the gear shaft and the journal bearing in water hydraulic internal gear pumps

Chen

Zhou

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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Water hydraulics has drawn considerable attention in recent years for its environmental friendliness. This paper presents a numerical model for analysing the lubricating gap between the gear shaft and the journal bearing in water hydraulic internal gear pumps. The model consists of two parts: the gear part that addresses the radial force on the gear shaft and the film part that addresses the film characteristics of the gear shaft/journal bearing interface. The radial force is obtained by summing the fluid pressure around the gear circumference and the meshing force of the gear pair. The film characteristics are analysed by an elastohydrodynamic model that involves the evaluation of the film geometry, the film pressure, and the elastic deformation of the gear shaft/journal bearing interface. The radial force evaluated by the gear part is balanced by the film pressure evaluated by the film part. The gear part is validated by experiments on an oil internal gear pump from the aspect of the outlet pressure ripple, and the film part is validated by comparison with the results from other research groups. The proposed model allows the evaluation of radial micro-motion as well as the eccentric positions of the gear shaft. In addition, the influence of film deformation is further discussed, suggesting that the maximum film deformation should be maintained under 1.3 times the minimum film height. The proposed model can be used as a tool for design optimization of the water-lubricated journal bearing in water hydraulic internal gear pumps.

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Tap Water as a Hydraulic Pressure Medium

Cited by 25 publications

References 0 publications

Progress of Space Charge Research on Oil-Paper Insulation Using Pulsed Electroacoustic Techniques

Progress of Space Charge Research on Oil-Paper Insulation Using Pulsed Electroacoustic Techniques

A Technical Review on Development of an Advanced Electromechanical System

Numerical analysis of the lubricating gap between the gear shaft and the journal bearing in water hydraulic internal gear pumps

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