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Implementation of innovative production of protective liner to the manufacturing company
Kukla, Petr ; Lidmila, Zdeněk (referee) ; Peterková, Eva (advisor)
The Diploma thesis describes the implementation of innovative production of protective liner to the manufacturing company. The liner is manufactured in sizes of nominal diameter DN 200 - DN 500. The material is low-alloy steel EN 10216-2 10CrMo9-10. For the production innovation, the technology of pipe end flaring by a movable mandrel was chosen. Verification of the functionality of this technology was performed using analytical calculations and numerical simulation of FEM. The results of numerical methods were compared with the results of a practical experiment. The experiment was performed on 5 test specimens with a diameter of 273 mm. The machine device was a hydraulic press with a nominal force of 2000 kN and equipped with pressure and position sensors. The experimentally obtained values of force and the tool path dependence were similar with the values of FEM simulation. The difference in the value of the force in the maximum tool path was 290 kN. The flared diameter was formed to a value of 319 mm. This value corresponds to 16.5% of increased nominal diameter, which is sufficient from design point of view. Non-destructive tests ruled out the presence of crack defects on the flared diameter. According the new set up working procedure was produced the first real part. Significant financial savings of CZK 3.5 - 5.3 million / year were quantified in the technical and economic evaluation. Return on necessary investments is between the 9th - 14th manufactured pieces (approx. 15% of the annual production volume). In conclusion, innovation has promising results and will be issued by the company into the production process.
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Design forming tool for production of cylindrical case
Fiedor, Pavel ; Štroner, Marek (referee) ; Dvořák, Milan (advisor)
The project was made as a part of a bachelor’s degree study program B-STG and it proposes the concept of a molding instrument for the making of a headless bushing. The making of the given part consists of 3 operations, including widening by means of a hard instrument and flanging. The instrument is fastened into a hydraulic press CUPJ 60/10. The cutting method is used in order to prepare the semi-product. The aim of the bachelor’s thesis is to propose a technological procedure of making and processing of design documentation of an instrument for making a headless bushing.
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High-Quality Visualization of Petri Nets for Publishing Purposes
Bednář, Drahoslav ; Kočí, Radek (referee) ; Janoušek, Vladimír (advisor)
This work is trying to solve the problem of graphical visualization of Petri nets in text publications. The aim of the thesis is to create a tool that will simplify generating of Petri nets and at the same time provide a more aesthetic graphical output than existing tools do. A simplex algorithm was used for automatic network layout. The program has both graphical interface and text mode and can cooperate well with existing tools for working with Petri nets, which the text also mentions. The program is able to load a pnml file and produce a usable image in png, pdf, and svg formats.
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Project of machine part of hydraulic circuit of laboratory SUA Nitra
Boháč, Daniel ; Ryšavá, Markéta (referee) ; Žoužela, Michal (advisor)
This Master’s thesis deals with design of hydraulic circuit of laboratory of the Slovak university of agriculture in Nitra with focus on project of its machine part. The thesis includes a description of current condition of the laboratory and a list of investor’s requirements. The main task of this thesis is to complete a project documentation which will be used to build a hydraulic circuit in laboratoty of Department of Water Resources and Environmental Engineering under Faculty of Horticulture and Landscape Engineering of the Slovak University of Agriculture in Nitra. The hydraulic circuit is based on recirculation concept. It consists of an underground water storage tank, stainless steel distribution pipes, measuring flumes and centrifugal submersible pumps. The hydraulic circuit will serve employees of the university for their scientific and educational purposes. Important parts of this thesis are hydrotechnical calculations and circuit control visualisations. The final design is based on a series of negotiations with the investor and suits his requirements.
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Renovation of sewer network with CIPP methods
Holeš, Petr ; Helcelet, Marek (referee) ; Raclavský, Jaroslav (advisor)
Diploma thesis makes a summary of today’s state of CIPP methods designed for sewer relining. Thesis presents classification of CIPP methods between other NO-DIG technologies. Then CIPP methods are divided into groups according to the material used for the liner, applied resin, installation method and curing method. Designing of the CIPP liner used for sewer renovation is also part of this diploma thesis. The result of the theoretical part of this work is a table, which states suitability of particular methods for use in a sewer of specific technical properties. Practical part of bachelor’s thesis is dealing with the analysis of defects of an existing sewer in the city Přerov. Analysis was done due to the camera examination provided by the company Wombat s.r.o. Later the table developed in theoretical part was applied, and then the suitability of use of all parameters of CIPP liners was commented. At the end the plan of works is designed, with the plan for pumping of water included.
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Design of steam generator tube bundle
Klíma, Martin ; Lošák, Pavel (referee) ; Nekvasil, Richard (advisor)
Diploma thesis is focused on analisis of the steam generator tube bundle on the basis calculation by the finite elements method and softwaru ANSYS. Next it will also také account of job descriptions and methods of operation of the equipment propřed plan revision kontrol points that will be most critical. Annexes included documentary of model from the SolidWorks.
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Manufacturing of the steam attemperator protective liner
Kukla, Petr ; Lidmila, Zdeněk (referee) ; Peterková, Eva (advisor)
The Bachelor´s thesis deals with the innovation of the manufacturing of the steam attemperator protective liner. The part will be made of low – alloy steel EN 10216-2 10CrMo9-10. The presented work contains an overview of possible production methods, where the technology of pipe end flaring with a fixed mandrel was chosen as the most suitable. The required material parameters were obtained by the tensile test. The application of the selected technology method was verified by analytical calculations and FEM simulation. According to the determined forming force (810 kN), an electro – hydraulic press OMCN 164 with nominal force 1000 kN was chosen. This machine is fully sufficient for the production of this component. The risk of occurring of a defects was excluded based on calculations and simulation. There was assessed considerable financial saving over 53 % in the technical and economic evaluation. In conclusion, this optimization of production is technically acceptable.
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Optimization suggestions of the loading device.
Kršiak, Oliver ; Foral, Štěpán (referee) ; Varmuža, Jan (advisor)
The thesis deals with the contemporary status of a loading device, specially focusing on its weak points and used materials and a design of a new way of connecting parts of the device. It also concerns the means of sealing each individual parts and the choice of materials with low induction of radioactivity. There are shown and described some ways of connection of pipelines, where this is used, in the thesis. In the thesis there are also described various types of sealants. For proper material application in the reactor enviroment, it was necessary to conduct an analysis of components of chosen alloys and their reaction to slow heat electrons and fast electrons. Based on this analysis and other properties, the right alloys were chosen. In the last part of the thesis, there is briefly included the topic of prolonging devices and the way of meassuring the speed of transport.
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Heating the child school
Pyszczyková, Anna ; Wierzbická, Helena (referee) ; Vališ, Ivan (advisor)
Introduction of the theoretical part of the thesis deals with the heat from the past to the present. There is a description of each resource usage, advantages and disadvantages.Calculation section provides an illustrative example the heating system, brand new building of the child school.
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