Multi-layer intensifier design and analysis of design parameters

Thesis Type: Postgraduate

Institution Of The Thesis: Cukurova University, Fen Bilimleri Enstitüsü, Makina Mühendisliği, Turkey

Approval Date: 2000

Thesis Language: English


Consultant: Necdet Geren


Water-jet cutting systems which are based on the principle of using water-jet beam of high kinetic energy that is obtained by passing the pressurized water inside a nozzle are frequently preferred in recent years as a result of operational and economic benefits that they provide especially to manufacturing industry. In the design, double acting or phased type structures are preferred as pressure generators (intensifiers). For both cases, oil and water pressures are increased in the cylindrical form sections. Safety is the most important design parameter in the intensifier design. Safety, which has vital importance especially at high pressures (over 500 bar), determine the construction according to the desired value to be reached in intensifier whether it has single-layer or multi-layer. Previous studies show that, for single-layer intensifiers, it is not possible to keep the safety factor at the desired level at high pressures (over 1800 bar) whatever the cylinder wall thicknesses are chosen regarding the cylinder and system dimensions. Therefore, multi-layer intensifiers are developed to reach ultra-high pressures. In this thesis, design factors and design parameters of multi-layer intensifiers are analyzed. Finally, regarding all design criteria, for ultra-high pressures (over 3000 bar) intensifier safe dimensions are determined and the relations between design parameters are analyzed. Keywords: Intensifier, Intensifier Design, Multi-layer Intensifier Design, Shrink-Fit, Fretting