Simulation and Experimental Study of Pilot Operated Water Hydraulic Pressure Relief Valve with Diaphragm Seal

2012 ◽  
Vol 48 (02) ◽  
pp. 179 ◽  
Author(s):  
Bihai ZHU
2021 ◽  
Author(s):  
Franc Majdič

Water hydraulics is increasingly becoming a viable alternative to oil hydraulics due to its environmental sustainability. The leakage of water hydraulic components is one of the reasons why water hydraulics is not more widely used. One of the missing water hydraulic components is also the two- stage pressure relief valve. Various valve designs have been investigated. FEM and CFD analyses of the relief valve were performed. Some prototypes were made and tested in the pressure range of 50 to 200 bar at a maximum flow rate of 30 lpm. The functional characteristics of the valve were studied, and the influence of each component was determined. It was found that the manufacture of a two-stage water valve is technologically feasible with appropriate design adjustments.


2015 ◽  
Author(s):  
Marcos José Babilonia ◽  
Juliana Kuhlmann Abrantes ◽  
Luis Fernando Alzuguir Azevedo

1998 ◽  
Vol 22 (4) ◽  
pp. 337-341 ◽  
Author(s):  
Satoshi Taketani ◽  
Yoshiki Sawa ◽  
Takafumi Masai ◽  
Hajime Ichikawa ◽  
Koji Kagisaki ◽  
...  

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Hyunjun Kim ◽  
Sanghyun Kim ◽  
Youngman Kim ◽  
Jonghwan Kim

A direct spring loaded pressure relief valve (DSLPRV) is an efficient hydraulic structure used to control a potential water hammer in pipeline systems. The optimization of a DSLPRV was explored to consider the instability issue of a valve disk and the surge control for a pipeline system. A surge analysis scheme, named the method of characteristics, was implemented into a multiple-objective genetic algorithm to determine the adjustable factors in the operation of the DSLPRV. The forward transient analysis and multi-objective optimization of adjustable factors, such as the spring constant, degree of precompression, and disk mass, showed substantial relaxation in the surge pressure and oscillation of valve disk in a hypothetical pipeline system. The results of the regression analysis of surge were compared with the optimization results to demonstrate the potential of the developed method to substantially reduce computational costs.


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