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Anti-seismic analysis method for residual heat removal pump

A technology of waste heat removal pump and seismic analysis, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve the effect of improving accuracy

Active Publication Date: 2014-07-16
JIANGSU UNIV
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Problems solved by technology

During the calculation, the equivalent static method or the response spectrum method is used to calculate the deformation of the nuclear power pump during the safe shutdown earthquake (SSE), and then check it, but how to consider the influence of the fluid flow inside the pump has not yet been reported

Method used

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  • Anti-seismic analysis method for residual heat removal pump
  • Anti-seismic analysis method for residual heat removal pump
  • Anti-seismic analysis method for residual heat removal pump

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] see Figure 1-Figure 5 , the seismic analysis method of waste heat removal pump includes the following steps:

[0018] Step 1. Preliminary structural design. According to the relevant technical requirements of the nuclear power plant, a preliminary structural design is made for the waste heat discharge pump.

[0019] According to the functional requirements of nuclear power plants for waste heat discharge pumps, the waste heat discharge pumps for nuclear power plants are designed. At the same time, it meets the hydraulic performance requirements of the waste heat discharge pump and the requirements of high structural rigidity. flow Q d =910m 3 h -1 , head H des =77m, speed n d =1490rpm, inlet diameter D s =270mm, impeller outlet diameter D 2 =513mm, blade outlet width b 2 =49mm.

[0020] Step 2: Use 3D modeling tools to carr...

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Abstract

The invention discloses an anti-seismic analysis method for a residual heat removal pump. The anti-seismic analysis method includes: firstly, designing a seismic response spectrum by analyzing operating conditions and load of a pump model and analyzing seismic data; secondly, adopting a finite element calculation procedure for calculation to obtain stress variation conditions of equipment in a stationary state under seismic force; thirdly, adopting a fluid structure interaction based method for flow induction vibration calculation of a rotor system to obtain maximum stress generated by rotating fluid in the equipment to the structure; fourthly, combining maximum reaction values of modes of vibration; finally, checking according to material attributes and a minimum clearance between a static part and a rotor part. Acting force of the rotating fluid on equipment is calculated, stress calculation of rotary mechanical equipment for nuclear power under the most extreme condition is taken into account, and accuracy in anti-seismic analysis and calculation is improved.

Description

technical field [0001] The invention proposes an anti-seismic analysis method, which is suitable for the anti-seismic analysis method of a centrifugal waste heat discharge pump used in nuclear power. Background technique [0002] Nuclear power is a kind of clean energy. As people pay more and more attention to the global warming effect and climate change, it has become the consensus of the government and all walks of life to vigorously develop nuclear power to meet power demand, optimize energy structure, and ensure energy security. The vigorous development of the nuclear power industry has created a huge market for nuclear power rotating machinery, and at the same time puts forward higher and higher requirements for product reliability. Centrifugal waste heat removal pumps are mostly related to the heat transfer of the nuclear island, and their internal flow is complex, with thermal shock and strong flow excitation force. On the other hand, with the frequent occurrence of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 司乔瑞袁寿其邓鑫袁建平裴吉周邦伦
Owner JIANGSU UNIV
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