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Safety of automated industrial valves in operating conditions
Kryštof, Ondřej ; Trávníček, Petr (referee) ; Kotek, Luboš (advisor)
Choosing suitable and safe valve with accessories depends on general specifications for plant. Using valve for on/off, throttling, back-flow prevention, etc., pressure drop is related with Kv value or leakages from piping systems are main factors for properly valve selection. Valve have to resist chemicals and substances that may change the state, temperature and its fluctuation, pressure, corrosion and erosion. This properties determine pressure class, temperature resistance, connection into pipe and sealing material as gland packing, seats, seal between flange etc. This and other specification, listed in this thesis, can help determine suitable type of valve. This thesis deals construction design of valve and accessories as well. The last chapters are focused on calculation of safety valve and selection safe and appropriate control valve with accessories.
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The construction of electromagnet testing device
Vlasák, František ; Blecha, Radim (referee) ; Knoflíček, Radek (advisor)
Master thesis describes a single-purpose machine design, that is used for testing a basic features of proportional solenoid. The design is created in cooperation with company NUVIA a.s. and contains mechanical solution that is processed in respect with ergonomic requirements, safety and overall costs. Machine concept is affected by customer requirements, whose name, as well as real parameters of the product will not be published, because of non-disclosure agreement.
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Analysis of dynamic properties of pneumatic actuator
Hrivňák, Ján ; Žatko, Miroslav (referee) ; Malenovský, Eduard (advisor)
This thesis deas with dynamic analysis of pneumatic actuator which is used as regulation mechanis of turbochargers with Variable Nozzle Turbine (VNT) technology. The first part of work is focused on experimental modeling which goal is obtaining Frequency Response Function on specify frequency range by Frequency Response Function Analysis – FRFA. Dominant vibrations of pneumatic actuator active parts is expected on this specify frequency range. Results of experimental modeling will be used for gaining input parameters for numerical computation as well. The second part deal with Pre-Stressed Modal Analysis and subsequently Harmonic analysis. Obtained results with numerical and experimental analysis will be compared. This part of diploma thesis is solved in programmatic environment ANSYS Workbench.
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Optimalization construction tube lifter of spinner machine
Jeník, Jan ; Pavlík, Jan (referee) ; Knoflíček, Radek (advisor)
The first part of this thesis describes the current technologies of mechanical spin-ning. This is a ring, rotor and air-jet spinning. The product of spinning machines is yarn, the basic material for production textile. The next section describes in detail the current state of the node manipulator lifter tube on spinning machine TORNADO J20, by concern RIETER. It describes the structure, kinematics, duty cycle and requirements for the manipulator. The following optimization options which are described more options for solutions of individual functions of the manipulator, on the end is selected by multi-criteria analysis. The best solution that is elaborate in the next section. The author has created 3-D model optimized lifter tube. Positioning mechanism maintains the current kinematics, it is very similar. But gripper was designed as a passive, thus reduce the load positioning mechanism. Optimization was performed primarily to reduce overall production costs and to reduce weight manipulator. The conclusion is a comparison of current and new solutions. There are also eco-nomic recovery to.
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Accurate positioning of pneumatic drives
Volf, Marek ; Nevrlý, Josef (referee) ; Marada, Tomáš (advisor)
Thesis starts with brief overview of the present role of pneumatic actuators. Further research is carried out in modelling and control of pneumatic actuators. A basic overview of thermodynamic laws is presented. These laws are used to assemble a mathematical model of the pneumatic drive. Subsequently the identification of model parameters is shown. A controller is propřed using fuzzy PID algorithms. Results are compared with the conventional PID controller.
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Design of stend for testing of prosthetic feet
Švachová, Michaela ; Paloušek, David (referee) ; Koutný, Daniel (advisor)
The Bachelor's Thesis first reviews the general body of knowledge related to biomechanics of gait. The paper also provides definition and classification of a lower leg prosthesis together with a review of the most widely used transtibial prosthesis testing methods. The project also provides description and loading conditions of the main d ynamical a nd s tatical t est o f a lower leg p rosthesis a cording t o E N Č SN 10 328. The paper starts with analyzing the problem and continues with construction solutions complaint with testing requirements. The main output of the project is a 3D model of a test stand design with pneumatic actuator created in Inventor 2013 with related calculations in MathCad 14. The project includes also an assembly drawing, drawings of the welded pieces and drawings of other components.
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Design of single-purpose machine for washer stamping
Šverák, Petr ; Krbalová, Maria (referee) ; Blecha, Petr (advisor)
This bachelor’s thesis deals with design and construction of single-purpose machine for washer stamping. Manufacturing operation is described, solution is suggested and technical parameters of machine are selected. Then machine is designed in CAD system, basic construct calculations are performed and choice of purchased parts is justified.
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