The invention discloses a hemispherical anti-fouling structure of a drainage pipeline, including a drainage pipeline; the front end of the inlet of the drainage pipeline is embedded with a ring steel plate; the front end face of the ring steel plate is welded with the supporting base pipe; and the front end face of the supporting base pipe is connected with the hemispherical anti-fouling cover through a flange. The invention has the advantages of uniform force on the whole, simple manufacture, no stress concentration caused by welding, less material and dirt not easy to adhere to the dirt cover, which is conducive to dirt interception; when water enters the discharge pipeline through round holes, it collides with each other to dissipate energy, which is beneficial to reducing the flow velocity of the discharge pipeline, reducing the vibration of the overflow of the dirt cover, and improving the operation head of the discharge valve. The rear part of the retaining cover is equipped with support pipe, which is easy to disassemble and assemble, and the maintenance of the retaining cover is also convenient. The supporting seat pipe is equipped with an equal diameter pipe welded with the reinforcement ribs distributed uniformly along the circumference, which increases the damping energy dissipation locally, reduces the flow rate of the drain pipe once again and effectively improves the running head of the drain valve again.
【技术实现步骤摘要】
一种泄水管道半球型拦污结构
本专利技术涉及一种泄水管道半球型拦污结构,属水利水电工程金属结构
技术介绍
基于环保需要,水利水电工程通常在底部要设置泄水管道用于泄放生态流量,而泄水管道因孔口尺寸较小运行水头较高一般采用泄水阀操作。考虑泄水管道底部悬移质或推移质进入流道可能会造成阀体损坏,在其进口一般设置固定式拦污栅。传统的固定式拦污栅采用焊接结构,因栅片仅靠与拦污栅框架接触部位的焊缝固定,在流速过高的泄水管道中使用,栅片容易折断,造成较大污物进入泄水管道,导致阀体损坏,仅仅适宜于低流速场合,所以现有技术还是不够完善,有待于进一步提高。
技术实现思路
本专利技术的目的在于提供一种泄水管道半球型拦污结构,以防止泄水管道中流速过高使栅片折断,造成较大污物进入泄水管道,造成阀体损坏,从而克服现有技术的不足。为实现上述目的,本专利技术采用如下技术方案:本专利技术的一种泄水管道半球型拦污结构,包括泄水管道;泄水管道的进口前端预埋有环状钢板,环状钢板的前端面与支承座管焊接,支承座管的前端面经法兰与半球型拦污罩连接。前述结构中,所述半球型拦污罩包括半球壳体,半球壳体上均布有一 ...
【技术保护点】
1.一种泄水管道半球型拦污结构,包括泄水管道(1);其特征在于:泄水管道(1)的进口(2)前端预埋有环状钢板(3),环状钢板(3)的前端面与支承座管(4)焊接,支承座管(4)的前端面经法兰(6)与半球型拦污罩(5)连接。
【技术特征摘要】
1.一种泄水管道半球型拦污结构,包括泄水管道(1);其特征在于:泄水管道(1)的进口(2)前端预埋有环状钢板(3),环状钢板(3)的前端面与支承座管(4)焊接,支承座管(4)的前端面经法兰(6)与半球型拦污罩(5)连接。2.根据权利要求1所述泄水管道半球型拦污结构,其特征在于:所述半球型拦污罩(5)包括半球壳体(8),半球壳体(8)上均布有一组圆孔(7),半球壳体(8)的开口处焊接有法兰(6)。3.根据权利要求2所述泄水管道半球型拦污结构,其特征在于:所有圆孔(7)的中心线在半球壳体(8)的球心处交汇。4.根据权利要求1所述泄水管道半球型拦污结构,其特征在于:所述支承座管(4...
【专利技术属性】
技术研发人员:王兴恩,
申请(专利权)人:中国电建集团贵阳勘测设计研究院有限公司,
类型:发明
国别省市:贵州,52
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