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Elbow inlet runner with curved diverter plate

A technology of water inlet channel and split plate, which is applied in artificial water channels, components of pumping devices for elastic fluids, hydraulic engineering, etc. It is relatively large and affects the flow velocity distribution at the outlet of the inlet flow channel, etc., to achieve the effect of improving the flow state of the inlet water, improving the flow velocity distribution at the outlet of the flow channel, and being easy to implement.

Active Publication Date: 2020-05-01
扬州市勘测设计研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The elbow tapering section accounts for a large hydraulic loss in the elbow-shaped inlet channel, and the axial velocity distribution uniformity of the elbow tapering section changes greatly, and the elbow tapering section often affects the flow velocity distribution at the outlet of the inlet channel.

Method used

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  • Elbow inlet runner with curved diverter plate
  • Elbow inlet runner with curved diverter plate
  • Elbow inlet runner with curved diverter plate

Examples

Experimental program
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Embodiment Construction

[0024] The invention is applicable to various elbow-shaped water inlet channels, and the drawings are designed according to the design requirements.

[0025] Determine the position of the throat section of the elbow-shaped water inlet channel, and a section of the centerline of the channel according to the narrowing section of the elbow is the centerline of the section of the arc-shaped splitter plate, and this line is thickened according to (0.01-0.02)D. The curved diverter plate is set to the inner side of the elbow-shaped water inlet channel, slightly higher than the center line of the channel, and the upper part of the diverter plate is 0.4 h t， The lower part is 0.6 h t .

[0026] The length of the curved splitter plate along the water flow direction is (0.6-0.9) D, and the appropriate value is selected according to the specific design size of the flow channel. The vertical water flow direction is consistent with the width of the elbow-shaped flow channel where the spl...

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Abstract

The invention provides an elbow type inlet passage with an arc-shaped spreader plate, and belongs to the technical field of water conservancy projects. The elbow type inlet passage comprises a linear gradually reducing section, an elbow gradually reducing section, a straight cone section and a separating pier, and is characterized in that the arc-shaped spreader plate is arranged in the elbow gradually reducing section, the longitudinal section of the arc-shaped spreader plate is in an arc shape, the central line of the arc-shaped spreader plate and the central line of the elbow gradually reducing section are consistent in shape. When water flow flows out of the linear gradually reducing section of the elbow type inlet passage, the water flow is uniform in flow speed distribution, but when the water flow flows in the elbow gradually reducing section, the mainstream of the water flow deviates to the inner side of the elbow type inlet passage and the flow speed of the inner side is higher than that of the outer side. Then, when the water flow passes through the elbow gradually reducing section of the arc-shaped spreader plate, the flowing and separating of the elbow gradually reducing section are reasonably controlled, the water flow of the inlet passage is more smooth in flowing, and the flow speed uniformity of the elbow gradually reducing section and the flow speed distribution of the outlet of the inlet passage are improved.

Description

technical field [0001] The invention relates to an elbow-shaped water inlet channel provided with an arc-shaped splitter plate, which belongs to the technical field of water conservancy engineering. Background technique [0002] The elbow-shaped water inlet channel is a unidirectional shrinkage water inlet channel, which is mainly composed of a linear tapered section, an elbow tapered section, and a straight cone section. Each flow section of the linear tapered section shrinks evenly, the water flows smoothly, and the pressure and speed change evenly. In the elbow tapering section, the flow of water changes from horizontal motion to vertical motion. At the same time, under the action of inertial force, the inner pressure of the elbow tapering section is low and the flow velocity is high, while the outer pressure of the elbow tapering section is high and the flow velocity is low. Inside the elbow taper, flow separation is prone to occur on the inside of the elbow taper. Flo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/54
CPCE02B5/00E02B5/087
Inventor 刘超黄佳卫张松杨帆罗秀娜冯晓红金勇宋希杰叶鹏查智力严天序
Owner 扬州市勘测设计研究院有限公司
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