Results 11 to 20 of about 175,360,748 (298)
A software and hardware design scheme of intelligent valve positioner [PDF]
E3S Web of Conferences, 2021 Valve positioner is the core component of the pneumatic control valve. A new software and hardware design scheme of intelligent valve positioner is presented in this paper.
Xu Haiming, Zhang Lanzhu
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Development and research of throttle-regulating valves with increased erosion resistance
Trudy Odesskogo Politehničeskogo Universiteta, 2020 The reliability and trouble-free operation of nuclear power plants is due to the reliability of the pipeline systems connecting the main and auxiliary equipment. The main elements of such systems are power valves, the reliable operation of which largely
Павло Яремович Павлишин +1 more
doaj +5 more sources
Development of a new four-disc friction-free ball valve
You-qi chuyun, 2021 In order to solve the problems of large operating torque, easy internal leakage and poor anti-fouling capability of the general ball valves in the oil and gas pipelines, a new type of four-disc friction-free ball valve was designed based on the existing ...
Yulong FENG +4 more
doaj +1 more source
Energies, 2021 The purpose of this study was to investigate the effect of valve mechanisms on the exhaust residual gas (ERG) and effective release energy (ERE) of a motorcycle engine. Here, a simulation model and the estimation a new valve mechanism design is presented.
Nguyen Xuan Khoa, Ocktaeck Lim
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Microflow valve control system design [PDF]
, 2011 A design synthesis for a microflow control system is presented based on the interrogation of an analytical model, testing, and observation. The key issues relating to controlling a microflow using a variable geometry flow channel are explored through the
Zante, Remi Christophe, Yan, Xiu
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Cost effective combined axial fan and throttling valve control of ventilation rate [PDF]
, 2004 This paper is concerned with Proportional-Integral-Plus (PIP) control of ventilation rate in mechanically ventilated agricultural buildings. In particular, it develops a unique fan and throttling valve control system for a 22m3 test chamber, representing
Leigh, P. +5 more
core +4 more sources
Design and Test of a New Tracheostoma Valve Based on Inhalation [PDF]
Archives of Otolaryngology–Head & Neck Surgery, 1999 Tracheostoma valves are used to make hand-free speaking possible for persons who have undergone a laryngectomy.To design and test a new tracheostoma valve to improve existing tracheostoma valves.The tracheostoma valve closes by means of strong inhalation so that all the air that is exhaled is available for phonation.
Geertsema, AA +3 more
openaire +3 more sources
Industrial Design of High Voltage Flexible DC Converter Valve
Zhongguo dianli, 2020 To improve the product quality and added value of flexible DC converter valve, it is meaningful to investigate its corresponding industrial design method. Based on analyzing the design of the sub-module, valve module and valve tower of a ±320 kV flexible
Li QIAO +3 more
doaj +1 more source
Pressure losses and oscillations in a compact valve of a steam turbine [PDF]
MATEC Web of Conferences, 2021 Characteristics of a new compact valve design for steam turbines are analysed by measuring pressure losses and oscillations on the valve model. It is the model of an intercept valve of the intermediate-pressure turbine part.
Sláma Václav +5 more
doaj +1 more source
A computational fluid dynamics evaluation of a pneumatic safety relief valve [PDF]
, 2008 Safety relief valves are well established components preventing catastrophic failure of pressurised systems when non-normal operating conditions occur.
Dempster, W.M., Elmayyah, W.
core +2 more sources