某抽水泵站设计学士学位论文.doc
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1、 本科毕业论文(设计)题目: 某 抽 水 泵 站 设 计 2006 年 11 月中文摘要某市拟拆除土桥旧站,新建一座抽水站,作为江堤达标建设的附属配套工程,兼挡洪、灌溉、排涝于一体,设计流量22m3/s。该站的主要任务是与十二圩泵站联合运行,抽引江水,补给淮水水源的不足,解决该市境内13个乡近50万耕地的灌溉用水,并结合仪扬河以南圩区64平方公里面积的排涝任务,要求在上下游水位组合允许时,能实现自流和自排,保证该地区社会与经济的可持续发展。本设计泵站以灌溉为主,属中型泵站,选用块基型结构的泵房,即进水流道与泵房底板整体浇筑,形成一块状基础结构作为整个泵房的基础。考虑泵站的多重任务,本设计采用双
2、向进出水流道,以满足泵站自引、自排及双向提水的要求。进水流道能够为水泵提供良好的进水条件。双向流道布置具有占地面积小、节省工程投资、便于集中管理等优点。本设计泵站以灌溉为主,兼有挡洪、排涝任务,属中型泵站,选用块基型结构的泵房,即进水流道与泵房底板整体浇筑,形成一块状基础结构作为整个泵房的基础。本设计采用正向进水前池,前池的水流方向和与进水池的水流方向一致,水流的流态平顺,池的结构简单、施工方便。本设计采用双向进出水流道,以满足泵站自引、自排及双向提水的要求。进水流道能够使水流从前池进入水泵叶轮室的过程中更好地转向和加速,为水泵提供良好的进水条件。双向流道布置具有占地面积小、节省工程投资、便于
3、集中管理等优点;缺点是对进水流道设计要求较高,否则,容易增加阻力损失,进水流道易产生涡带,导致水泵及站房振动,严重时可能危及机组和站身安全。本设计将检修间和配电间分别布置在泵房的两端。在泵站排涝期间,为防止水草等杂物进入进水流道,在内河侧设置清污机,以保证泵站的有效运行。清污机具有自动化程度高、工作效率高等优点。 关键词: 泵站 灌溉AbstractSome cities intend to dismantle the old station of soil bridge , one Xin Jian pump station , are 22 m3/s blocking flood , ir
4、rigation , draining waterlogged farmland in an integral whole , designing rate of flow concurrently as the affiliation auxiliary projects that the river dike builds up to the standard. Be the major task standings turn to be to unite with twelve country fair pump stations working , to shrink to attra
5、ct river water, deficiency replenishing Huaihe River water with a source of water, almost 500,000 13 countryside cultivated land irrigation resolving that city within the territory uses water , join draining waterlogged farmland spreading River 64 square kilometers to the south country fair area are
6、a combining with an instrument the mission, can realize the sustainable development flowing by itself and swear to owe area society and economy from the row when requiring that water level combination allows in upper lower reaches,. Originally, design that the pump station gives first place to irrig
7、ation , belong to the medium-sized pump station , select and use a pieceConsider multiple pump station mission , design is adopted two-way pass in and out of streams saying that self quotes from a row in order to satisfying a pump station ,and two-way request carrying water. Enter streams being able
8、 to be that the water pump provides fine water-entering condition. Two-way runner arrangement has Zhan field area merit such as small , economizing project investment , centralized management easy to.Design that the pump station gives first place to irrigation originally , simultaneously, have block
9、ing flood , drain waterlogged farmland the mission, belongs to the medium-sized pump station ,select and use a piece base the architectural pump house of type, is that streams says and the pump house bottom board entirety concrete move forward , the form of block infrastructure forming one is entire
10、 pump house basis. Capital is designed adopt water-entering forward direction front pool, front pool streams direction and the streams direction with entering pool are consistent, the streams stream state smooth-going, the pool structure is simple , construction is convenientDesign is adopted two-wa
11、y pass in and out of streams saying that self quotes from a row in order to satisfying a pump station ,and two-way request carrying water. Enter streams being able to make streams before, get lost much better and speed up providing fine water-entering condition, for the water pump in pool entrance w
12、ater pump impeller room process. Two-way runner arrangement has Zhan field area merit such as small , economizing project investment , centralized management easy to; The shortcoming is to say that design demand is high, otherwise, easy to increase resistance loss to entering streams , receives stre
13、ams road belt easy to produce a whirlpool , leads to the water pump and station house vibration , may endanger the aircraft crew and station body safety when grave. Design the both ends will overhaul a room and arranging respectively among power distribution in the pump house originally. During the
14、period of the pump station drains waterlogged farmland, be prevent waterweeds from waiting for varia entrance to enter streams saying, effective operation setting up clear filth machine, to ensure that the pump stands in inland river side. Clear filth machine has an automation degree height , advanc
15、ed merit of availability.Key Words:Pump station Irrigation 目 录第一章 工程提要1第二章 设计依据与基本资料2第三章 水泵选型与工况校核4第一节 水泵选型4第二节 动力机选配5第三节 水泵工况校核6第四章 枢纽总体布置8第五章 泵房设计9第一节 选定泵房结构形式9第二节 泵房尺寸拟定9第三节 泵房主要构件材料和尺寸12第六章 进出水建筑物设计18第一节 进水流道的设计18第二节 出水流道的设计18第三节 引渠的设计19第四节 前池的设计19第七章 泵房附属设施选择21第一节 起重设备21第二节 配电柜21第三节 电缆沟21第四节 起动
16、供水设施22第五节 检修工作桥22第六节 清污机23第七节 闸门与启闭机23第八章 泵房整体稳定计算25第一节 渗透稳定验算25第二节 地基容许承载力计算26第三节 泵房基底压应力计算26第四节 泵房抗滑稳定计算31第五节 泵房稳定计算成果汇总32第九章 结构计算33第一节 底板内力计算33第二节 底板配筋计算35结束语38致谢词39参考文献:40第一章 工程提要某市拟拆除土桥旧站,新建一座抽水站,作为江堤达标建设的附属配套工程,兼挡洪、灌溉、排涝于一体,设计流量22m3/s。该站的主要任务是与十二圩泵站联合运行,抽引江水,补给淮水水源的不足,解决该市境内13个乡近50万耕地的灌溉用水,并结合
17、仪扬河以南圩区64平方公里面积的排涝任务,要求在上下游水位组合允许时,能实现自流和自排,保证该地区社会与经济的可持续发展。本设计泵站以灌溉为主,属中型泵站,选用块基型结构的泵房,即进水流道与泵房底板整体浇筑,形成一块状基础结构作为整个泵房的基础。考虑泵站的多重任务,本设计采用双向进出水流道,以满足泵站自引、自排及双向提水的要求。进水流道能够为水泵提供良好的进水条件。双向流道布置具有占地面积小、节省工程投资、便于集中管理等优点。第二章 设计依据与基本资料一、地形资料见灌区水利枢纽图及站址地形图。二、水位资料水位资料见表21。表21 设计水位资料 水位工况灌溉排涝长江内河长江内河最高水位0.804
18、.407.503.0设计水位0.804.405.732.6最低水位0.002.605.732.6三、地基土壤资料经钻探分析,站址处地质情况见表22。表22 设计地质资料土层高程(m)击数N比重天然含水率W%湿(t/m3)干(t/m3)天然孔隙比 e流限WL (%)塑限WP (%)塑性指数 Ip压缩系数 a凝 聚 力 C(kPa)内摩擦角 承 载 力 FK (kPa)(1)2.25以上,黄色土壤42.7231.51.911.45832.120.711.40.3424.01980(2)0.250.80,重粉质土壤32.7340.01.841.321.0733.619.913.70.4718.811
19、60(3)0.801.5,粉质土壤82.7228.41.911.450.8838.726.412.30.288.218210(4)1.50以下,棕色土壤252.7431.61.971.610.6637.325.61.732.119460四、其它资料1. 设计标准:级水工建筑物;2. 抗震标准:地震烈度7级;3. 该地区离市区较近,附近有35千伏电力线穿过。站区内有公路干线,建筑材料及机电设备均可运至工地。第三章 水泵选型与工况校核第一节 水泵选型(1)确定泵型方案水泵的选型一般有以下几条原则:充分满足一定设计标准内供排水及灌溉要求;水泵在运行中效率高;水泵运行时安全,汽蚀性能良好;机电设备及土
20、建投资费用低;运行、管理和维修方便。考虑灌溉情况,泵站净扬程为:H净 =内河长江 =4.40.8=3.6m查水泵与水泵站表7-1,可取管路损失为净扬程的15%,则泵站设计扬程为:H设= H净(1+15%)=3.61.15=4.14m泵站最小扬程为:Hmin =内河长江 =2.60.8=1.8m泵站最大扬程为:Hmax =内河长江 =4.40.0=4.4m根据设计扬程和设计流量,查轴流泵资料(高邮水泵厂)可得:900ZLB100型泵,转速为485r/min,叶角为+4o;1300ZLB/Q70型泵,转速为375r/min,叶角为0o两个泵型方案。它们的扬程均符合要求,可作为进一步比较的依据。它们
21、的性能指标如表31所示。表31 立式轴流泵性能规格表型号叶角(o)流量(L/s)扬程 (m)转速(r/min)轴功率(kW)效率 (%)叶轮直径(mm)900ZLB100+430963.02485113.980.585028534.22138.085.5426325.33164.183.81300ZLB/Q70061844.1837531680.2115052307.4344286.243788.8547480.2(2)确定各泵型台数用关系式i =Q站 /Q泵 确定上述各泵型所需台数。900ZLB100型泵:i=22/ 2.853=7.71,取8台;1300ZLB/Q70型泵:i=22/ 6.
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