核电站常规岛厂房竖向标高设计影响分析
Impact Analysis of Vertical Arrangement for Conventional Island in Nuclear Power Plant
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摘要:
一般核电厂重要厂房的内部布置在原型设计的总体方案中已经标准化，包括常规岛厂房的内部分层和重要设备的布置。厂房竖向标高指在电厂设计初期确定厂房的底层相对于厂址总平面零米标高的相对高度。核电厂循环水量大，循环水泵是常规岛侧最大的能耗用户，凝汽器水室标高的变化，对循环水泵的能耗非常敏感。结合工程实践和国内外对常规岛厂房竖向布置的研究成果，通过整体上下调整常规岛厂房标高以充分利用虹吸可利用高度的布置方法，需要考虑凝汽器水室底部排水，厂房起吊跨的净空高度，厂房与厂外总平面的交通等问题等，定性地分析了需要考虑的影响因素，为各新建厂址常规岛厂房竖向标高定位提供参考。 Abstract:In nuclear power plant, the important buildings are standardized arranged, including Conventional Island (CI) building, the floor levels and the main equipment allocation are fixed in the original blue print. In this article, the vertical level elevation means the bottom elevation of CI building VS the site elevation. In nuclear power plant, the quantity of circulating water is large; the circulating pumps are the main power consumers. So the level variable of condenser is sensitive to the electrical cost of the circulating pumps. This article is based on the project feedback and the dedicated study by nuclear power plant designers for the vertical level, analysis the use of the fix height between the top of condenser and the level of overflow pit to earn the energy, in the meantime, the bottom level of condenser water box shall be above the higher sea level in order to be able to empty condenser water boxes for maintenance, the net height of handling row, transportation between the CI building and site, etc. are taken into account. Qualitative analysis list the relative factors should be considered in new power plant site.
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