Elbow type inlet passage with arc-shaped spreader plate

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. F...

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.

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