| Abstract | Ventili predstavljaju ključne komponente u industrijskim procesima, omogućavajući preciznu
kontrolu protoka fluida u sustavima te stoga imaju značajan utjecaj na parametre tih sustava.
Postoje različite varijacije ventila, no u ovom radu usredotočujemo se na razvoj
konstrukcijskog rješenja za regulacijski kutni ventil. Regulacijski ventili ostvaruju kontrolu
protoka, tlaka i temperaturnih parametara tako da pomiču zaporni element u smjeru protoka
ili u suprotnom smjeru.
Prvi korak u procesu izrade kutnog ventila je proračun koeficijenta protoka fluida, što je
ključan aspekt za projektiranje ventila. Razvijen je algoritam za izračun koeficijenta protoka
za stlačive i nestlačive fluide prema normi IEC 60534-2-1, koristeći relevantne matematičke
izraze koji prate proračun. Prilikom odabira medija, uzeti su u obzir pregrijana para, pad tlaka
od 4 bara i protok fluida, na temelju kojih je izračunat koeficijent protoka.
Nadalje, primjenjujući normu EN 12516, provodi se proračun debljine stijenke tijela ventila,
debljine stijenke poklopca i prirubnice koja će biti zavarena na tijelu ventila. Rješava se i
pitanje brtvljenja vretena i poklopca, odabiraju se ostale komponente te izrađuje 3D model
kutnog ventila. Kao konačni korak, izrađuje se tehnička dokumentacija koja prati sve
navedene proračune i konstrukcije ventila. |
| Abstract (english) | Valves are crucial components in industrial processes, enabling precise control of fluid flow
within systems and thus having a significant impact on the parameters of these systems.
There are various variations of valves, but in this work, we focus on the development of a
design solution for a angle control valve. Control valves regulate the flow, pressure, and
temperature parameters by moving the plug in the direction of flow or in the opposite
direction.
The first step in the process of creating an angle valve is the calculation of the fluid flow
coefficient, which is a crucial aspect of valve design. An algorithm for calculating the flow
coefficient for compressible and incompressible fluids has been developed in accordance
with the IEC 60534-2-1 standard, using relevant mathematical expressions that accompany
the calculation. When selecting the medium, considerations were given to superheated steam,
a pressure drop of 4 bars, and fluid flow, based on which the flow coefficient was calculated.
Furthermore, following the EN 12516 standard, the thickness of the valve body wall, the
thickness of the valve cover wall, and the flange that will be welded to the valve body are
calculated. The issue of sealing the spindle and cover is also addressed, other components are
selected, and a 3D model of the angle valve is created. As a final step, technical
documentation is prepared, which accompanies all the mentioned calculations and the valve
design. |
| Study programme | Title: Mechanical Engineering; specializations in: Design, Process and Energy Engineering, Production Engineering, Engineering Modelling and Computer Simulation, Marine Engineering, Industrial Engineering and Management, Materials Engineering
Course: Design
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) |
