Papers by Keyword: Valves

Abstract: One of the most important issues in the procurement of parts and products by the process of metallurgy is the design of the details of the press-mold. The design should be carried out in such a way that the additional mechanical processing of the purchased parts and products is minimal. The tooling and technological scheme of the press-mold should be selected as might it be economically viable and the mechanical processing stakes are small. For these purposes, in this present study, the valve part of the high-pressure drilling pump НП-720х105, which is widely used in the oil and gas complex, was selected for theoretical and experimental investigations. With the help of the software, in order to ensure equal distribution of residual porosity in the samples, the optimal size and configuration of the samples were determined, and the inner and outer conical walls of the asymmetric samples were subjected to dynamic hot pressing. "Valve seat" and "valve tray" of the НП-720х105 high-pressure three-plunger pump were used for the experimental studies. From the conducted tests, it became clear that during the preparation of abrasive steels with high impact-abrasive corrosion resistance, it is necessary to thoroughly study the chemical and granulometric composition, structure, and strengthening process. Theoretical and experimental results show that the technology of manufacturing parts resistant to impact-abrasive corrosion allows the obtained parts to work in conditions of high impact-hydroabrasive corrosion.

Abstract: For the complex terrain, in long-distance slurry pipeline, the core equipment of the running pipeline - valve monitoring is particularly important. This paper based on the actual running conditions of Yunnan Dahongshan pipeline, developed an intelligent valve control system. Valve monitoring and management can be seen in this system, which combines software programming, measurement technology, communication networks, as well as order management, fault management, spare parts management, query statistics. Getting running parameters rely on the monitoring system, and then for the mathematical model of solid traffic in slurry pipeline transportation, the slurry weight can be measured. The system achieved valve monitoring and management very well, improving the long-distance slurry pipeline running reliability.

Abstract: In view of the demands in multidisciplinary design optimization (MDO) of valve products, the MDO model for valves is established, which takes account of mechanical analysis, fluid mechanics analysis, thermal-mechanical coupled analysis and seismic analysis. On this basis, the MDO integrated system is constructed combined with some new techniques to solve the common and critical problems of optimal design of valves. The system takes interplay and coupling of each discipline into account, applies effective optimization strategy, information transmitting and concurrent design to get the synergistic effect produced by interaction of each discipline, and finally obtains the total optimum solution of valves, which, moreover, could provide technical reference for the practicality and commercialization of the integrated system in valves design optimization.