Razvoj in optimizacija novega hidravličnega varnostnega ventila

Kavčič, Peter (author), Majdič, Franc (mentor)

V pričujočem delu obravnavamo razvoj hidravličnega varnostnega ventila ter njegovo testiranje. Cilj diplome je bil izdelava varnostnega ventila, ki omogoča zanesljivo delovanje na širšem področju od trenutno dostopnih ventilov na trgu. Za potrebe izdelave simulacije je bilo uporabljeno obstoječe preizkuševališče v podjetju. Z ustrezno analizo podatkov smo določili začetne pogoje simulacije. Ugotovili smo, da lahko izberemo različne začetne pogoje, ki nam vrnejo podobne rezultate, vendar pa je pristop z izbiro začetnega pogoja tlak P-voda in pomik bata x bolj učinkovit. Z meritvijo dejanskega ventila smo ugotovili, da z eno vzmetjo ni mogoče dosegati ustreznega odziva v celotnem področju delovanja. Za vnaprej določeno vzmet ugotavljamo, da je delovanje ustrezno med nastavitvami tlaka od 150 bar do 350 bar ter pri pretokih od 5 L/min do 60 L/min. Glede na rezultate simulacij sklepamo, da bi za pokritje večjega območja delovanja ventila potrebovali več različnih vzmeti.

• Language: Slovenian
• Keywords: varnostni ventili, hidravlika, testiranje, karakteristike tlak-pretok
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [P. Kavčič]
• Year: 2026
• Number of pages: X, 28 f.
• PID: 20.500.12556/RUL-185166
• UDC: 621.646.28:621.22(043.2)
• COBISS.SI-ID: 287590403
• Publication date in RUL: 25.07.2026

Secondary language

• Language: English
• Title: Development and optimisation of the new hydraulic pressure relief valve

Abstract

In the following work, the development and testing of hydraulic safety relief valve is discussed. The main goal of the diploma project was to produce a valve that ensures reliable operation over a wider range of operating conditions than currently available valves on the market. For the purposes of creating a numerical simulation, the existing testing facility in the company was used. With a proper analysis we determined initial conditions that returns similar results but the approach based on selecting the initial pressure in the P-line and piston displacement x is more efficient. By measuring the actual valve, we found that it is not possible to achieve an adequate response across the entire operating range. For the predetermined spring we found that the operation is adequate for pressure settings from 150 bar to 350 bar and flow rates from 5 L/min to 60 L/min. Based on the simulation results, we concluded that several different springs are needed to cover a larger operating range of the valve.

• Keywords: safety relief valve, hydraulics, testing, characteristic pressure-flow