1) rated head
额定水头
1.
The selection Nuozhadu Hydropower Station rated head;
糯扎渡水电站额定水头选择
2.
In view of the large head variation in Longtan hydropower station and the turbine′s operation stability,this paper gives suggestion to raise the rated head of turbine or set a maximum capacity of generator of continuous operation .
由于龙滩电站水头变幅较大 ,考虑水轮机运行稳定性 ,建议提高水轮机额定水头或设置可连续运行的发电机最大容量。
3.
With the help of many design institutes,data of domestic turbines has been collected,then the method of enveloping regression is chosen,and the rule between the specific speed of turbine and the rated head is analyzed.
从近年国内研制及使用的水轮机资料中,采用包络回归分析法分析了比转速和额定水头间的规律,通过多种回归模型的计算分析得出了相应的统计公式。
2) norminal effective head, norminal net head, rated net head
额定净水头
3) selection of rated head
额定水头选择
4) rated head
额定压头
5) meter rating
表头额定值
6) water consumption quota
用水定额
1.
Probe into the municipal water and public water consumption quota in Jiangsu Province;
城市生活与公共用水定额编制探讨
2.
Connecting with the practice of energy management work, this paper expounds the method of and existing problems in determining water consumption quota in production of diaphragmatic alkali.
结合能源管理工作实践 ,阐述了隔膜碱生产中现行用水定额的确定方法及存在的问
3.
Based on analysis and consideration of the main factors influencing industrial and municipal water consumption quota, this paper develops the data analysis system of the industrial and municipal water consumption quota that makes the formulation of water consumption quota be simplified and be weighted with unified standard.
在分析、考虑影响工业及城市生活用水定额主要因素的基础上,开发了工业及城市生活用水定额数据分析系统,将用水定额编制简单化,并可以用统一的标准来衡量。
补充资料：水电站额定水头
水电站额定水头
design head of hydro-power station
小，造成较大的受阻容量.这就须增加电力系统的装机容黄，从而付出经济代价。若倾定水头减小，则在水轮发电机组额定容量不变时，需加大水轮机直径和相应降低机组转速，使水轮发电机组重量增加，从而增加水电站的建设费用。 水电站额定水头一般略低于加权平均水头，有时为了多获得季节性电能，也可考虑在水轮机直径和转速不变的情况下，适当提高水电站额定水头，以加大发电机容量。 水电站额定水头、预想出力及受阻容t示意图见图。shu一d旧nzhon ed一ng shu一tou水电站额定水头(design head of hydropowerstatinn)机组额定容t相应的最小水头。也称临界水头。它是水电站重要的特征水头。水轮机的过水能力与水头平方根成正比，水头愈高，水轮机的轴出力也愈大，在某一水头时，水轮机最大可能的轴出力叫做水轮机水头预想出力，或简称为预想出力。但水轮发电机组的出力，还受发电机容t的限制，因此水轮发电机组的水头预想出力，应为水轮机水头预想出力与发电机容t两者之较小者。当水电站工作水头小于机组额定水头时，机组水头预想出力小于机组额定容量，其不足部分叫受阻容量. 水电站额定水头的选择是一个技术经济问题。若倾定水头较高，当水电站水库消落深度(即正常蓄水位与死水位的高程差)较大时，或低水头电站汛期出现大流t，下游水位大幅度抬高时，都将使水头大幅度减┌─┬─┐│ │ │└─┴─┘预娜出力里阻容t水电站额定水头、预想出力及 受阻容t示意图
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条