Open AccessDesign & Simulation of a Superimposed Hydraulic Back Pressure Valve with Adaptive Back Pressure
Author(s) -
Xuyao Mao,
Hongyuan Ding,
Bin Li,
Chao Wu,
Nei Wang
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1601/6/062033
Subject(s) - globe valve , adaptability , back pressure , relief valve , hydraulic machinery , marine engineering , flow (mathematics) , underwater , leakage (economics) , port (circuit theory) , hydraulic cylinder , engineering , structural engineering , geology , mechanical engineering , mechanics , physics , ecology , oceanography , macroeconomics , economics , biology
A superimposed hydraulic back pressure valve with adaptive back pressure was designed. The back pressure of the valve changes as the diving depth of underwater vehicles changes, and is always higher than outboard environmental pressure by an adjustable value, preferred 0.5MPa, to avoid leakage of environmental medium to the inboard hydraulic system. The valve was designed in a pilot-operated style with a flat valve port of main valve. Variable damping plugs were used to easily regulate the dynamic performance of the valve. And an isolation device was adopted to isolate the contact between the inboard and outboard media. The static mathematic models of the valve were established and simulations were carried out. The simulation results show the valve has good pressure stability and flow adaptability, and its back pressure changes with the change of outboard pressure well.