An Overview of Asme Class 2 and 3 Valve Design and Service Loading Rules

2021 ◽  
Author(s):  
Ronald Farrell ◽  
Jason Lambin
Keyword(s):  
Valve Design ◽  
Service Loading

Present limitations in the assessment of components under multiaxial service loading

2005 ◽  
Vol 47 (5) ◽  
pp. 255-259 ◽  
Author(s):  
Cetin Morris Sonsino ◽  
Martin Küppers ◽  
Harald Zenner ◽  
Farhad Yousefi-Hashtyani
Keyword(s):  
Service Loading

T-Pouch: A New Valve Design for a Continent Ileostomy

2002 ◽  
Vol 45 (3) ◽  
pp. 411-415 ◽  
Author(s):  
Andreas M. Kaiser ◽  
John P. Stein ◽  
Robert W. Beart
Keyword(s):  
Continent Ileostomy ◽  
Valve Design

Dynamic analysis of leaflet stresses and application to heart valve design

1988 ◽  
Vol 10 (5) ◽  
pp. 453-457 ◽  
Author(s):  
P.A.A. Laura ◽  
R.E. Rossi ◽  
D.V. Bambill de Rossit
Keyword(s):  
Dynamic Analysis ◽  
Heart Valve ◽  
Valve Design

Design Method for Fast Switching Seat Valves for Digital Displacement® Machines

2014 ◽  
Author(s):  
Daniel B. Roemer ◽  
Per Johansen ◽  
Henrik C. Pedersen ◽  
Torben O. Andersen
Keyword(s):  
Pressure Loss ◽  
Design Method ◽  
Thermal Dissipation ◽  
Valve Design ◽  
Stroke Length ◽  
Efficient Operation ◽  
Fast Switching ◽  
Switching Times ◽  
High Bandwidth ◽  
Electro Magnetic

Digital Displacement® (DD) machines are upcoming technology where the displacement of each pressure chamber is controlled electronically by use of two fast switching seat valves. The effective displacement and operation type (pumping/motoring) may be controlled by manipulating the seat valves corresponding to the piston movement, which has been shown to facilitate superior part load efficiency combined with high bandwidth compared to traditional displacement machines. However, DD machines need fast switching on-off valves with low pressure loss for efficient operation, especially in fast rotating operation, where switching times must be performed within a few milliseconds. These valve requirements make a simulation based design approach essential, where mechanical strength, thermal dissipation, fluid dynamics and electro-magnetic dynamics must be taken into account. In this paper a complete design method for DD seat valves are presented, taking into account the significant aspects related to obtaining efficient DD valves with basis in a given DD machine specifications. The seat area is minimized and the stroke length is minimized to obtain fast switching times while considering the pressure loss of the valves. A coupled optimization is finally conducted to optimize the electro-magnetic actuator, leading to a valve design based on the chosen valve topology. The design method is applied to an example DD machine and the resulting valve design fulfilling the requirements is presented.

Optimization of a Hydraulic Valve Design Using CFD Analysis

2005 ◽  
Author(s):  
Manohari D. Ramesh ◽  
Yan A. Tan ◽  
XueKui Lan
Keyword(s):  
Cfd Analysis ◽  
Valve Design ◽  
Hydraulic Valve

A Mechatronic Approach to Compact Fluid Disc Valve Design

1995 ◽  
Vol 209 (2) ◽  
pp. 115-125
Author(s):  
G A Parker ◽  
Y B Sun
Keyword(s):  
Low Cost ◽  
Dynamic Performance ◽  
Operating Mode ◽  
Industrial Applications ◽  
Test Results ◽  
Valve Design ◽  
Electromagnetic Characteristics ◽  
High Control ◽  
Fail Safe ◽  
Pilot Valve

The work presented in this paper deals mainly with a mechatronic approach to compact disc valve design and concentrates on improvements to the disc valve electromagnetic characteristics, the diaphragm design and the dynamic performance. A novel diaphragm-disc force motor has been successfully developed incorporating a pair of permanent ring magnets. It has the advantages of low electric power consumption at the null position, dual-lane electrical structure for fail-safe operation, high control accuracy and should be competitive with existing torque motors due to its low cost and simple construction. The research involved designing and testing a prototype disc pilot valve with a dual-lane operating mode. The test results showed that the valve has satisfactory static and dynamic characteristics for industrial applications.

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