Uređaj za ispitivanje stanja cijevi izmjenjivača topline

undergraduate thesis

• Title (english): Device for inspection of heat exchanger tubes
• Author: Filip Koraca
• Mentor: Stanko Škec (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-02-27, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

U ovom je radu opisan razvoj uređaja za ispitivanje stanja cijevi izmjenjivača topline. Radi boljeg razumijevanja problema, na samom početku dan je kratki osvrt na nuklearne elektrane i njihovu važnost, kao i objašnjenje pojma nuklearne energije i njena pretvorba unutar jedne takve elektrane. S obzirom na to da je izmjenjivač topline element koji prenosi toplinu između pojedinačnih zatvorenih krugova rashladnog medija nuklearne elektrane, detaljnije je opisan način i važnost hlađenja jednog od tih krugova. Dan je i pregled različitih vrsta izmjenjivača topline, od kojih je najčešći, shell and tube, detaljnije opisan. U uvodnom dijelu opisan je i pojam nerazornih ispitivanja, njihova važnost i primjena, kao i najčešća oštećenja na cijevima izmjenjivača topline. Nakon opisa problema, započeta je faza koncipiranja uređaja gdje se analiziralo tržište u smislu pretrage patenata, postojećih uređaja, kao i pregleda postojećih uređaja tvrtke Inetec. Analiza tržišta poslužila je za definiranje tehničkih zahtjeva uređaja, koji zajedno s potrebama utvrđenima u razgovoru s inženjerima u Inetecu čine kuću kvalitete koja daje bolju sliku rasporede resursa za danji razvoj. Kreirana je funkcijska struktura uređaja i detaljno objašnjene interakcije između njegovih podsustava. Rješenja za pojedine funkcije dane su u morfološkoj matrici, nakon koje su generirani koncepti. Koncepti su evaluirani i detaljno je opisana konstrukcijska razrada pojedinih komponenti odabranog koncepta. Odabrani koncept razrađen je i modeliran u programskom paketu Autodesk Inventor 2020. U zadnjem dijelu je ispitana mogućnost unošenja i montiranja uređaja u virtualnu prostoriju izmjenjivača topline korištenjem tehnike virtualne stvarnosti.

Abstract (english)

This thesis covers the development of a heat exchanger's tube inspection device. For better understanding of the problem, at the beginning of the thesis a short description of a nuclear power plant is given, along with the explanation of the term „nuclear energy“ and it's transformation inside one of such power plants. Since heat exchanger is an element which transfers heat between closed media circuits of a nuclear power plant, importance and methods of cooling such circuits are explained in detail. There is also given an overview of different types of heat exchangers, where the most common one, shell and tube is described in detail. In the introduction, the term Non Destructive Testing is also explained, along with its importance and application, together with an explanation of most common defects in heat exchanger tubes. After the problem's description, conceptualization phase has started where market research was conducted in terms of patent search, existing products analysis and Inetec's existing products analysis. Market research has been used for defining technical requirements of the device which, along with user needs defined in conversation with Inetec engineers construct house of quality which gives a better overview of resource distribution for the future product development. Functional structure of the product is made and interactions between product's subsystems are explained in detail. Solutions for partial functions are given in the morphological matrix, after which concepts were generated. Concepts were evaluated and selected concept's further development is documented and explained in detail. The selected concept is developed and modelled in Autodesk Inventor 2020 software. The possibility of installation and assembly of the device in heat exchanger's room is examined in the last part of the thesis using virtual reality technology.

• Keywords: manipulator; uređaj za ispitivanje; izmjenjivač topline; nerazorna ispitivanja; razvoj proizvoda; virtualna stvarnost; virtualna montaža
• Keywords (english): manipulator; inspection device; heat exchanger; Non Destructive Testing; product development; virtual reality; virtual assembly
• Language: croatian
• URN:NBN: urn:nbn:hr:235:227291
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-02-23 18:44:45