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Function of surge chamber
Březina, Michal ; Jandourek, Pavel (referee) ; Klas, Roman (advisor)
The thesis is focused on creation of the mathematical model for calculating the change of fluid volume and flow in surge tank and air chamber during the water hammer effect. The work also includes the derivation of the basic equations of hydrodynamics and the theory dealing with water hammer including the possibilities in protection of the pipeline system during this phenomenon.
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Hydraulic cylinder
Svárovský, Petr ; Jandourek, Pavel (referee) ; Klas, Roman (advisor)
This bachelor thesis deals with problems of linear hydraulic motors. In the introduction, the general distribution of hydraulic motors is given. The main part of the thesis is devoted to linear hydraulic motors, their parts and construction. The strength calculation of the hydrau-lic motor is also given. The conclusion of the thesis is devoted to the mathematical model for calculating the natural frequencies of the hydromotors.
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Fluid couplings and torque convertors
Skokan, Jan ; Jandourek, Pavel (referee) ; Klas, Roman (advisor)
This bachelor thesis is devoted to the issue of fluid couplings and torque convertorsand their combination with mechanical gears. The main section outlines development and design of fluid couplings and torque convertors.Resources to improve their performance are also mentioned. Furthermore, there are mentioned combinations of fluid and mechanical transmission.
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Fluid coupling
Vavrla, Zdenek ; Jandourek, Pavel (referee) ; Klas, Roman (advisor)
This diploma´s thesis deals in the first part with hydrodynamic coupling, mainly on her construction and function description. In the second part of this diploma´s thesis is solved influence construction changes of the hydrodynamic coupling to the transmitted torque. Changes in the construction are determined by changing the number of blades and changing the value gap between the turbine and pump round. Finally, construction change is solved of the hydrodynamic coupling to increase the transmitted torque and force effects are evaluated on the hydrodynamic coupling.
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Vane pump
Mach, Jiří ; Jandourek, Pavel (referee) ; Klas, Roman (advisor)
This work gives basic information about vane pumps, especially with unbalanced construction and vanes led by rotor. The first chapter generally gives an attention to pumps. There are described basic information, classification, advantages and disadvantages of the types, characteristics and calculation relations. The following chapters describe the vane pumps in the way of classification, description of function and calculation relations. There is also made a practical calculation of vane pump according to the assignment accompanied by CFD analysis.
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Study of turbine with side channel runner
Jandourek, Pavel ; Haluza, Miloslav (referee) ; Pochylý, František (advisor)
This thesis deals with proposal of constructional solving turbine with side channel. Basis for the design is lossy characteristics of the valve. The intention is to replace hydraulic closures by turbine with side channel runner. Hydraulic losses in the flow restriction in turn replaced by the electricity generation in the comparable characteristics of valve and turbine.
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Valve Exploiting Principle of the Side-Channel Turbine
Jandourek, Pavel ; Janalík, Jaroslav (referee) ; Varchola, Michal (referee) ; Pochylý, František (advisor)
The presented work deals with basic characteristics of the side-channel machines. The intention is to replace the pressure reducing valve by low-specific speed side-channel turbine. Thereby creating a kind of turbine valve using energy, which would otherwise be dissipated in the valve. Pressure reducing valves are the source of large hydraulic losses and their replacement is possible, because the same resistance characteristics side-channel turbine and a pressure reducing valve.
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Positive displacement pump design
Homola, Tomáš ; Jandourek, Pavel (referee) ; Klas, Roman (advisor)
The bachelor thesis is focused on positive displacement pump design. At the beginning of the bachelor thesis is described basic division of hydrostatic pumps, basic calculation relations and characteristic of liquids. The basic calculation relations are: actual flow, torque, efficiency and power consumption. Furthermore, in the individual pump types are described principle function, characteristics, uses, advantages and disadvantages. At the end of the thesis is mentioned current research, which conversant analysis of the force Gerotor pumps, where the cycloidal transfer made from thermoplastic (POM).
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Water jet cutting of material
Chmelař, Zdeněk ; Jandourek, Pavel (referee) ; Habán, Vladimír (advisor)
This bachelors thesis is focused on explaining the broad issue of the non-conventional machining by water jet. Introductory chapters deal with various techniques and methods of water-jet cutting. Then the following text provides us with a detailed description of the machine itself. The third chapter is focused on the technology of cutting and quality of the resulting surface and the possibility of affecting it by technological parameters. Before the conclusion there is evaluation of the benefits of water jet cutting.
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Screw pumps
Dvořák, Petr ; Jandourek, Pavel (referee) ; Klas, Roman (advisor)
This work gives basic information about screw pumps. The work is about hydrostatic convertors. It describes division hydrostatic convertors basic information, purpose, equations and diagrams. Then the work gives information about division of screw pumps, their construction, principle, how working and utilization. At the end of the work is derivation of equations for computation twinscrew pump with buttress thread and drawing of diagrams from these equations. Consequently is doing calculation of twin screw pump for entry data.
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