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Well type water inlet and outlet structure adopting S-shaped bent pipe
The invention discloses a well type water inlet and outlet structure which comprises a flow dividing body, a vertical shaft, the bent pipe and an adit sequentially connected from top to bottom, wherein the bent pipe is composed of an upper arc bent pipe body and a lower arc bent pipe body, and the upper arc bent pipe body and the lower arc bent pipe body are two sections of reverse arc bent pipe bodies; the axes of the flow dividing body, the vertical shaft, the upper arc bent pipe, the lower arc bent pipe and the adit are located on the same plane and are perpendicular to the ground. After the lower bent pipe section of the well type water inlet and outlet is changed into the S-shaped equal-diameter bent pipe from a spindle body shape, outflow of each orifice in the upper part of the vertical well tends to be uniform under a water pumping working condition, so that the problem of non-uniform planar and vertical flow velocity distribution of each orifice can be improved, the negative flow velocity at the bottom of the section of the trash rack disappears, the head loss is obviously reduced, and the economic benefit is high; all hydraulic indexes under the combined working condition can meet the design and specification requirements. Compared with a traditional body type, the body type and structure design is simplified, the hydraulic condition is better, and the structure is worthy of being widely applied and popularized in pumped storage projects.
本发明公开了一种采用S型弯管的井式进出水口结构，包括从上到下依次连接的分流体、竖井、弯管、平洞，弯管由上圆弧弯管和下圆弧弯管组成，上圆弧弯管与下圆弧弯管为两段反向圆弧弯管，分流体、竖井、上圆弧弯管、下圆弧弯管、平洞的轴线在同一平面上且垂直于地面。将井式进出水口的下部弯管段由纺锤体型改为S型等直径弯管后，抽水工况下竖井上部各孔口出流更趋于均匀化，从而可改善各孔口平面及垂向流速分布不均问题，拦污栅断面底部负流速消失，水头损失明显减小，经济效益高，在组合工况下各项水力学指标均能满足设计和规范要求。与传统体型相比，体型及结构设计简单化，水力学条件更好，值得在抽水蓄能项目中广泛推广和应用。
Well type water inlet and outlet structure adopting S-shaped bent pipe
The invention discloses a well type water inlet and outlet structure which comprises a flow dividing body, a vertical shaft, the bent pipe and an adit sequentially connected from top to bottom, wherein the bent pipe is composed of an upper arc bent pipe body and a lower arc bent pipe body, and the upper arc bent pipe body and the lower arc bent pipe body are two sections of reverse arc bent pipe bodies; the axes of the flow dividing body, the vertical shaft, the upper arc bent pipe, the lower arc bent pipe and the adit are located on the same plane and are perpendicular to the ground. After the lower bent pipe section of the well type water inlet and outlet is changed into the S-shaped equal-diameter bent pipe from a spindle body shape, outflow of each orifice in the upper part of the vertical well tends to be uniform under a water pumping working condition, so that the problem of non-uniform planar and vertical flow velocity distribution of each orifice can be improved, the negative flow velocity at the bottom of the section of the trash rack disappears, the head loss is obviously reduced, and the economic benefit is high; all hydraulic indexes under the combined working condition can meet the design and specification requirements. Compared with a traditional body type, the body type and structure design is simplified, the hydraulic condition is better, and the structure is worthy of being widely applied and popularized in pumped storage projects.
本发明公开了一种采用S型弯管的井式进出水口结构，包括从上到下依次连接的分流体、竖井、弯管、平洞，弯管由上圆弧弯管和下圆弧弯管组成，上圆弧弯管与下圆弧弯管为两段反向圆弧弯管，分流体、竖井、上圆弧弯管、下圆弧弯管、平洞的轴线在同一平面上且垂直于地面。将井式进出水口的下部弯管段由纺锤体型改为S型等直径弯管后，抽水工况下竖井上部各孔口出流更趋于均匀化，从而可改善各孔口平面及垂向流速分布不均问题，拦污栅断面底部负流速消失，水头损失明显减小，经济效益高，在组合工况下各项水力学指标均能满足设计和规范要求。与传统体型相比，体型及结构设计简单化，水力学条件更好，值得在抽水蓄能项目中广泛推广和应用。
Well type water inlet and outlet structure adopting S-shaped bent pipe
一种采用S型弯管的井式进出水口结构
LU DONGSHENG (author) / LI BING (author) / WANG CHUNSHENG (author) / SUN SHUANGKE (author) / LIU HAITAO (author) / WU MIN (author) / ZHANG HONGMEI (author)
2021-12-03
Patent
Electronic Resource
Chinese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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