Zhu G.,Nuclear Power Institute of China |
Tian X.,Nuclear Power Institute of China |
Wei W.,Shandong Nuclear Power Co.
Hedongli Gongcheng/Nuclear Power Engineering | Year: 2015
The beltline region and inlet nozzle of the reactor pressure vessel (RPV) is investigated in this paper. Fracture mechanics finite element model is built, the transient temperature filed and stress filed are analyzed using the detailed thermal engineering analysis result of typical event transients as the input conditions. Combining with the irradiation embrittlement assessment result, the structure integrity of RPV under events is analyzed and assessed adopting the analysis method for the deterministic fracture mechanics. The analysis result shows that brittle rupture would not happen in the interesting region of RPV during the life time of forty years, but attention should be paid to the transients with great changing rate of coolant temperature. ©, 2015, Editorial Office of Nuclear Power Engineering. All right reserved.
Zou J.,Harbin Institute of Technology |
Zhao M.,Harbin Institute of Technology |
Wang Q.,Harbin Institute of Technology |
Wu G.,Shandong Nuclear Power Co.
IEEE Transactions on Industrial Electronics | Year: 2012
The magnetic field computation and performance characteristics analysis for a tubular transverse flux machine (TFM) with permanent-magnet excitation have been discussed. The following issues have been emphasized: construction of the tubular TFM, magnetic flux distribution, winding back electromotive force, winding inductance, and thrust force. The topology of such a machine requires a 3-D finite-element method to accurately predict the machine performance. The simplified computation model is proposed in order to save the computing time. The experimental setup has been developed. The calculated results and the measured results are in good agreement. Thus, the validity of the simplified computation model is indirectly proved. The thrust-force capabilities of the tubular TFM are compared with other topologies of linear machines. The technology of the tubular machine could be enriched. © 2006 IEEE.
Li Y.,Shandong University |
Shi L.,Shandong University |
Liu C.,Shandong Nuclear Power Co. |
He Z.,Shandong University |
Wu S.,Shandong University
Journal of Thermal Analysis and Calorimetry | Year: 2015
Abstract In this work, limestone, aluminum nitrate hydrate, and glycerol water solution by combustion synthesis method were proposed to prepare a synthetic CaO/Ca3Al2O6 sorbent for CO2 capture in calcium looping cycles. The effects of the mass ratio of CaO to Al2O3, cycle number, carbonation conditions, and calcination conditions on the CO2 uptake by the obtained synthetic sorbent in the repeated carbonation/calcination cycles were studied in a dual fixed-bed reactor and a thermogravimetric analyzer. The optimum mass ratio of CaO to Al2O3 was 90:10 in the preparation process of the synthetic sorbent, which exhibited a 0.43 g g-1 of CO2 uptake after 50 cycles. The main compositions of the synthetic sorbent contained the mass ratio of CaO:Al2O3 = 90:10 were CaO and Ca3Al2O6, and the mass ratio of CaO to Ca3Al2O6 was 74:26. The CO2 uptake by CaO/Ca3Al2O6 increases rapidly with the carbonation time in previous 5 min and then rises slowly after 5 min. The carbonation time to reach the maximum CO2 uptake rate of CaO/Ca3Al2O6 was much sooner than that of CaO derived from limestone in each cycle. The optimum carbonation temperature window of CaO/Ca3Al2O6 was 650-700°C. CaO/Ca3Al2O6 sorbent possessed obviously higher sintering resistance than CaO under the more severe calcination conditions in the cycles. The high CO2 uptake capacity of CaO/Ca3Al2O6 was attributed to its stable porous structure in the multiple carbonation/calcination cycles. © 2015 Akadémiai Kiadó, Budapest, Hungary.
Xue Y.,Shandong Nuclear Power Co. |
Xue T.,China Electric Power Research Institute
World Information on Earthquake Engineering | Year: 2016
The nonlinear finite element analysis software ABAQUS is adopted to analyze the seismic performance and compared with the original structure. The analysis results show that under strong earthquakes, the structural interlayer displacement angle can satisfy the requirements of specification, its seismic performance is significantly improved and can continue to use after the quake after setting viscous dampers. Finally, the research provides a strong theoretical basis for the application of the new type of viscous dampers in the main machine hall in conventional island. © 2016, Science Press. All right reserved.
Song Q.,CAS Wuhan Institute of Rock and Soil Mechanics |
Li H.,CAS Wuhan Institute of Rock and Soil Mechanics |
Li J.,CAS Wuhan Institute of Rock and Soil Mechanics |
Yao W.,Shandong Nuclear Power Co. |
And 2 more authors.
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | Year: 2012
Shandong Haiyang Nuclear Power Plant site contains multitudinous stratifications. On the basis of monitoring points' velocity of blasting vibration, the attenuation laws of blasting vibration in different directions to stratification are given out in the process of blasting excavation. It is concluded based on blasting experiment that the velocity of blasting vibration along the stratification strike is bigger than that perpendicular to the stratification strike with same distance and same excavation without considering the influence of blasting rear impact. What's more, blasting vibration damped exponential increases when the angle between stratification strike and the line from monitoring points to explosive source makes larger. Therefore, the monitoring points need to be made sure on rational site in accordance with the site geological condition; and it is necessary to have several monitoring points when the site situation is complex.