CN201151898Y - 水电站进水口排沙设施 - Google Patents

水电站进水口排沙设施 Download PDF

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Publication number
CN201151898Y
CN201151898Y CNU2007200653094U CN200720065309U CN201151898Y CN 201151898 Y CN201151898 Y CN 201151898Y CN U2007200653094 U CNU2007200653094 U CN U2007200653094U CN 200720065309 U CN200720065309 U CN 200720065309U CN 201151898 Y CN201151898 Y CN 201151898Y
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water inlet
desilting
sand
utility
grid
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戴晓兵
李延农
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PowerChina Zhongnan Engineering Corp Ltd
Hydrochina Zhongnan Engineering Corp
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Hydrochina Zhongnan Engineering Corp
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Abstract

本实用新型涉及水电站进水口排沙设施。本实用新型提供的水电站进水口排沙设施是在排沙底孔(冲沙闸)上游或侧向设置格栅式排沙廊道，格栅式排沙廊道的基本体型是在冲沙槽(沉沙池)上方设置格栅式顶板。本实用新型提供的水电站进水口排沙设施能收到良好的排沙效果。

Description

水电站进水口排沙设施
技术领域
本实用新型涉及一种用于排除电站进水口泥沙的新型排沙设施，尤其适用于低水头河床式枢纽。
背景技术
在多沙河流上，无论是高水头电站，还是低水头河床式枢纽，电站进水口的取水排沙历来是十分重要的问题。对于低水头河床式枢纽，通常在电站进水口前设置一道冲沙槽(沉沙池)，并用排沙底孔(冲沙闸)进行拉沙。由于受到冲沙引水流量的限制，冲刷漏斗范围较小，难以达到理想的排沙效果。
实用新型内容
本实用新型的目的是通过改变进水口排沙设施的结构，提高设施的排沙能力。
为实现上述目的，本实用新型提供的水电站进水口排沙设施是在排沙底孔(冲沙闸)上游或侧向设置格栅式排沙廊道，格栅式排沙廊道的基本体型是在冲沙槽(沉沙池)上方设置格栅式顶板。
申请人在对电站进水口排沙问题的泥沙模型试验研究中认识到，要提高排沙底孔的输沙率，必须改变排沙设施内水流的流态。由此提出了“格栅式排沙廊道+排沙底孔(冲沙闸)”的组合型式(见图1、图2)，即在电站进水口前沿设置一道格栅式排沙廊道，排沙底孔(冲沙闸)与格栅式排沙廊道连通。当排沙底孔(冲沙闸)泄洪排沙时，排沙底孔(冲沙闸)的进水水流均匀分布于整个排沙廊道的上方。由于排沙廊道格栅缝隙和顶板的作用，水流在排沙廊道内及其周边形成螺旋流或结构紊乱的涡流，大大增强了水流的挟沙能力，使淤积在排沙廊道及周边区域的泥沙迅速排空。
本实用新型提供的水电站进水口排沙设施收到了良好的排沙效果。
附图说明
图1是本实用新型实施例1的俯视图；其为“格栅式排沙廊道+排沙底孔”体型(轴线夹角为0°)；
图2是本实用新型实施例1的剖视图；
图3是本实用新型实施例2的俯视图；其为“格栅式排沙廊道+排沙底孔”体型(轴线夹角为90°)。
其中1——格栅式排沙廊道2——排沙底孔(冲沙闸)3——电站进水口4——格栅缝隙5——格栅顶板
具体实施方式
实施例
见图1和2，在排沙底孔2与电站进水口3之间，设置有格栅式排沙廊道1。廊道1的上方为格栅缝隙4和格栅顶板5。
同样见图3，在该实施例中也具有同样的结构。

Claims (1)

1、水电站进水口排沙设施，其特征在于在排沙底孔或冲沙闸上游或侧向设置格栅式排沙廊道，格栅式排沙廊道的基本体型是在冲沙槽或沉沙池上方设置格栅式顶板。
CNU2007200653094U 2007-12-05 2007-12-05 水电站进水口排沙设施 Expired - Lifetime CN201151898Y (zh)

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CNU2007200653094U CN201151898Y (zh) 2007-12-05 2007-12-05 水电站进水口排沙设施

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Application Number Priority Date Filing Date Title
CNU2007200653094U CN201151898Y (zh) 2007-12-05 2007-12-05 水电站进水口排沙设施

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CN201151898Y true CN201151898Y (zh) 2008-11-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103882838A (zh) * 2014-02-27 2014-06-25 黄河水利委员会黄河水利科学研究院 一种低水头河床式枢纽电站进水口的排沙方法
CN104846914A (zh) * 2015-05-27 2015-08-19 中国能源建设集团广东省电力设计研究院有限公司 电厂河床取水装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103882838A (zh) * 2014-02-27 2014-06-25 黄河水利委员会黄河水利科学研究院 一种低水头河床式枢纽电站进水口的排沙方法
CN103882838B (zh) * 2014-02-27 2015-12-02 黄河水利委员会黄河水利科学研究院 一种低水头河床式枢纽电站进水口的排沙方法
CN104846914A (zh) * 2015-05-27 2015-08-19 中国能源建设集团广东省电力设计研究院有限公司 电厂河床取水装置

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Patentee before: Mid-South Hydroelectric Investigation & Design Institute of China Hydropower Engineering Consulting Group

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Address after: 410014, 16 camphor Road, Yuhua District, Hunan, Changsha

Patentee after: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd.

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Granted publication date: 20081119

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