向阳口二级水电站初步设计
摘要 本设计为向阳口二级水电站厂房设计与仿真,该电站为引水式日调节电站,在华北电网上担任峰荷与调相任务,对改变华北地区用电紧张状态,充分合理利用水能资源,缓解电力系统高峰供电的紧张状态起积极作用,向阳口II级电站的兴建,对提高京津唐电力系统的灵活性,充分利用水能,具有十分重要的意义。电站首部为拦河坝,位于丰沙线沿河城车站和幽州车站之间的大青岩坝址上游距幽州车站2.8km,下有距沿河城车站3.2km,拦河坝采用重力坝, 电站首部为拦河坝,位于丰沙线沿河城车站和幽州车站之间的大青岩坝址上游距幽州车站2.8km,下有距沿河城车站3.2km,拦河坝采用重力坝, 本设计主要包括:最大水头确定水轮机的特征水头:、最小水头、设计水头。由电站的正常蓄水位,下游水位和死水位就可以求得水轮机的特征水头。机组台数可以根据单机容量求得。根据电站的主要水力特点以及水轮机系列型谱,参照单机容量确定水轮机型号。计算并选择了水轮机的转轮直径和水轮机的转轮转速,并且计算出了安装高程,吸出高等参数。由水头选择蜗壳类型,确定蜗壳的主要参数:包角大小、断面形状、进口断面流速。通过水力计算(其中中间断面的顶角点、底角点采用直线变化规律),确定各中间断面尺寸。根据电站要求选择弯肘型尾水管。本设计采用标准混凝土肘管,参照标称直径确定各部分尺寸。 枢纽布置中包括综合地质、地形、水文等各方面的要求,确定坝型、坝线以及枢布置,尤其是厂房的布置进行了仔细的研究讨论,最后确定厂房布置在右岸,溢流坝布置在左岸。此外还进行了开挖,地基处理等问题的设计。 厂房布置中包括确定了厂房各层高程,主厂房、副厂房、安装间的平面尺寸,以及发电机层、水轮机层、尾水管层的平面布置。此外还有桥吊、房顶及一些细部构造的设计。 本设计所有设计内容均是按所学水工建筑物和水电站的基本知识所设计,所有设计均符合现行设计的有关规范规定。 关键词:蜗壳;尾水管;装机容量;转轮直径;安装高程;厂房布置;水电站。 Abstract The desig
n of hydropower pla
nt as xia
ngya
ng mouth level desig
n a
nd simulatio
n, the power statio
n, adjust for water type, i
n
north Chi
na grid as load a
nd the task, to cha
nge PRCPM huabei regio
n, sufficie
nt electricity te
nsio
ns a
nd ratio
nal utilizatio
n of water resources i
n the power system of power to ease te
nsio
ns peak, the positive role of grade II xia
ngya
ng mouth, to improve the flexibility of tia
nji
n ta
ng power system, make full use of water, has the extremely vital sig
nifica
nce. First, i
n La
nHeBa for hydropower statio
n shache
ng li
ne alo
ng the river a
nd the city state betwee
n the upstream dam is quiet state Qi
ngYa
n km, u
nder the 2.8 km away from the tow
n, by the La
nHeBa 3.2 dam, First, i
n La
nHeBa for hydropower statio
n shache
ng li
ne alo
ng the river a
nd the city state betwee
n the upstream dam is quiet state Qi
ngYa
n km, u
nder the 2.8 km away from the tow
n, by the La
nHeBa 3.2 dam,) This desig
n is mai
nly i
nclude: the biggest characteristic of hydraulic head head: sure, the mi
nimum head, head of desig
n. By the power of the
normal storage level a
nd lower level a
nd the level of death ca
n be obtai
ned the turbi
ne characteristic head. U
nits ca
n be obtai
ned accordi
ng to the capacity of the
number. Accordi
ng to the characteristics of the mai
n power hydraulic turbi
ne usi
ng matlab, a
nd the series of capacity to determi
ne the turbi
ne model. Calculatio
n a
nd choice of turbi
ne turbi
ne ru
n
ner diameter a
nd the wheel speed, a
nd calculated the i
nstallatio
n elevatio
n, epispastic higher parameters. By the head, spiral type selectio
n of mai
n parameters: spiral A
ngle cross-sectio
n shape, size, imported sectio
n velocity. Through the hydraulic calculatio
n of the middle sectio
n (i
ncludi
ng vertex poi
nts, poi
nts: usi
ng the straight-li
ne variatio
n), to determi
ne the sectio
nal dime
nsio
ns betwee
n. Accordi
ng to the requireme
nt of power be
nd a
nco
n tail pipe. This desig
n USES the sta
ndard co
ncrete pipe, elbow to determi
ne the size of each part of
nomi
nal diameter. The ge
neral layout of comprehe
nsive geology, topography, i
ncludi
ng various aspects of hydrology, determi
ne the dam, dam axis a
nd decorate, especially the pla
nt layout carefully studied a
nd discussed, the fi
nal determi
natio
n buildi
ng layout, decorate i
n the right side of the zeya. I
n additio
n to the excavatio
n, fou
ndatio
n treatme
nt, etc. I
n the workshop arra
ngeme
nt i
ncludi
ng has determi
ned workshop each elevatio
n, mai
n workshop, vice-workshop, i
nstallme
nt pla
ne size, as well as ge
nerator level, hydraulic turbi
ne level, draft tube level pla
ne layout. I
n additio
n also has the bridge to ha
ng, the roof a
nd some detail structure desig
n. The this desig
n all desig
n co
nte
nt is presses studies the hydraulic e
ngi
neeri
ng structure a
nd the hydroelectric power statio
n eleme
ntary k
nowledge desig
ns, all desig
ns co
nform to the prese
nt desig
n related sta
ndard stipulatio
n. Key word: Volute; Draft tube; I
nstalled capacity; Ru
n
ner diameter; I
nstalls the elevatio
n; Workshop arra
ngeme
nt; Hydroelectric power statio
n.
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