Analiza i prijedlog poboljšanja konstrukcije kućišta visokotlačnog plinskog aktuatora

undergraduate thesis

• Title (english): Analysis and recommendation for improvement of housing design of high pressure gas actuator
• Author: Sara Ugrinić
• Mentor: Janoš Kodvanj (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

Tema ovog rada je analiza i prijedlog poboljšanja konstrukcije kućišta visokotlačnog plinskog aktuatora. Aktuator je uređaj koji se nalazi na blokadnoj plinskoj stanici i unutar njegovog kućišta nalaze se elementi koji služe za zatvaranje slavine plinovoda. Kućište aktuatora analiziranog u ovom radu je u zavarenoj izvedbi. Nedostatak zavarenog kućišta je dugotrajna proizvodnja što produžuje rok isporuke. U ovom radu predloženo je nekoliko izvedbi lijevanog kućišta koje bi ubrzalo i pojednostavilo proces proizvodnje. Kako bi takvo kućište bila dostojna zamjena zavarenoj izvedbi, provedene su računalne simulacije i analizirani su pomaci, deformacije i naprezanja kod obje izvedbe kućišta aktuatora.
Rezultati su pokazali da su naprezanja kod lijevanih izvedbi jednaka kao i kod zavarene izvedbe, ali su pomaci znatno veći kod lijevanih izvedbi kućišta. Lijevano kućište je potrebno preoblikovati i povećati debljinu stijenke na kritičnim mjestima.

Abstract (english)

The thesis reports on the analysis and suggestion for improving the design of high-pressure gas actuator housing. An actuator is a device located in a valve station. Inside its housing are elements used for closing a valve of gas pipeline. The housing of an actuator analyzed in this thesis is welded. The main disadvantage of such welded housing is long term production which extends overall delivery time. In this paper, several designs of cast housing are proposed to shorten and simplify manufacturing process. To make such housing a worthy replacement for a welded design, numerical simulations were performed, and displacements, stresses and strains were analyzed in both housing designs.
The results show that stresses in cast designs are the same as in the welded version, but displacements are much higher in the cast case designs. The cast housing needs to be reshaped and wall thickness increased at critical points.

• Keywords: aktuator; kućište; računalne simulacije; pomak; naprezanje
• Keywords (english): actuator; housing; numerical simulations; displacement; stress
• Language: croatian
• URN:NBN: urn:nbn:hr:235:031997
• 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: Embargoed access; Embargo expiration date: 2025-02-24
• Created on: 2020-02-24 11:01:51