Dissertation > Excellent graduate degree dissertation topics show

The Research of Hydraulic Shock Absorber for the Anti-earthquake of Nuclear Power Plant

Author: HuangChangFa
Tutor: ZhangJianCheng
School: Northeastern University
Course: Mechanical and Electronic Engineering
Keywords: Nuclear power plant seismic Damper/ Shock Absorber Counterweight Nonlinear spring Frequency characteristics Low-Frequency Vibration
CLC: TB535.1
Type: Master's thesis
Year: 2009
Downloads: 33
Quote: 0
Read: Download Dissertation

Abstract


Nuclear power plant is one of the most important new energy equipment. Once the nuclear power plant was suffered by earthquake, it may lead to a serious leak problem. there are amount of related researches among nations, but these researches were treat as national technique secret, and this aspect of technology is not mature in domestic. According to this technique need designed a few kinds of hydraulic shock absorber which suit for the anti-earthquake of nuclear power plant based on the analysis and research of Seismic excitation.After analysis the Performance characteristics of common use tube type hydraulic shock absorber, discover that the common use tube type hydraulic shock absorber has a good attenuation performance while the frequency input is high. But the main Seismic excitation is low-frequency and the common use tube type hydraulic shock absorber can not be applied to the Anti-earthquake of Nuclear Power Plant’s need.After carry on an improvement to the common use tube type hydraulic shock absorber, the hock absorber was designed to be a double freedom hock absorber. This double freedom shock absorber enhanced the Damping effect in high-frequency, but can not attenuate the low-frequency input still. So this kind of shock absorber can not be applied to the Anti- earthquake of Nuclear Power Plant’s need, neither.After comprehensive research the restriction system of lower frequency, puts forward two kinds of projects which are counterweight shock absorber and nonlinear spring shock absorber to reduce the natural frequency.After analysis the Performance characteristics of counterweight shock absorber and nonlinear spring shock absorber, discover that compeer to the common use tube type hydraulic shock absorber the counterweight shock absorber can reduce to 1/2 of the common use tube type hydraulic shock absorber’s natural frequency and nonlinear spring shock absorber can reduce to 1/4. Covered the seismic band in a high degreed.

Related Dissertations

  1. Design of Semicondutor Planar Transformer,TM402
  2. The Magnetic Circuit Design and Dynamic Characteristic of FBG-GMM Based on Current Transformer,TM452
  3. Develop of an Experimental Servo Platform and Research on the System Dynamic,TM341
  4. Units’ Dynamic Characteristics Reach and Risk Assessment of Islanding in Guangdong Power Grid,TM711
  5. Research on Drive Technology for Three Phase Hybrid Step Motor Based on Space Vector Modulation,TM383.6
  6. Taking into account the characteristics of the low-frequency and load frequency less the upload online checking system,TM732
  7. Research on Cutting Mechanism and Experiment of Low Frequency Step Vibration Tapping,TG62
  8. Signal Processing of Vortex Flowmeters and Nonlinear Dynamic Modeling of Sensors,TP212
  9. Development of Electro-Hydraulic Proportional Lift System for Simulation Test Rig of Sucker Rod Pump Units,TE933.1
  10. Study on Integrity Inspection Technology for Quality of Digital Strong Motion Accelerograph,P315.9
  11. Research on Transient Process of Winding Model with Subsection and Layer Structure under Narrow Pulse Voltage,TM595
  12. Research on Geophysical Prospecting Car Low Frequency Vibration Control and Development of Embedded Spot Inspection Data Acquisition System,P631.43
  13. A 5MHz monolithic langasite crystal filter,TN713
  14. PVDF low-frequency ultra-low frequency acceleration sensor,TP212.12
  15. Research on Fault Diagnosis of Rolling Bearing Based on Multi-Sensor Information Fusion,TH165.3
  16. Analysis of Wind Characteristics and Wind Effects on A Cable-stayed Bridge Based on Field Monitoring,U448.27
  17. The Numerical Analysis of Destruction Process of CFRP Reinforced Steel Concrete Beam,TU375.1
  18. Parallel studies of the power system stabilizer,TM44
  19. The Study on the Magnetoelectric Vibration Velocity Sensor Low-frequency Characteristic Compensation,TP212
  20. Structural Response Analysis of Subsea Jumper under Seismic Loads,P756.2

CLC: > Industrial Technology > General industrial technology > Acoustic engineering > Vibration, noise and its control > Vibration and noise control and its use > Vibration isolation, damping materials and structures
© 2012 www.DissertationTopic.Net  Mobile