Bottom sill structure for force elimination pool

Abstract

The invention discloses a bottom sill structure for a force elimination pool. The bottom sill structure comprises a front bottom sill arranged on a bottom plate of the force elimination pool and connected with the tail part of an overflow groove, and a tail bottom sill arranged at the tail part of the bottom plate of the force elimination pool and connected with a sheath; the water flowing direction of the front bottom sill comprises a first climbing section and a first inner concave arc section connected with the first climbing section, the back water flow direction of the front bottom sill comprises a downhill section, and the downhill section comprises a first upper convex arc section, a first concave convex arc section and a first lower concave arc section. The tail bottom sill comprises a buffer convolution part and a slow flow part which are arranged at intervals along the width direction of the force elimination pool, the buffer convolution part comprises a second climbing section and a second inner concave arc section connected with the second climbing section, and the slow flow part comprises a second lower concave arc section, a second concave convex arc section and a second upper convex arc section. The bottom sill structure of the force elimination pool is good in energy dissipation effect and enables water flow to flow into the sheath more smoothly.

Description

technical field [0001] The invention relates to energy dissipating equipment in water conservancy projects, in particular to a stilling pool and its bottom sill structure. Background technique [0002] Stilling pool is an energy dissipation facility used in water conservancy and hydropower projects to promote the generation of underflow hydraulic jumps downstream of discharge structures. The stilling pool can quickly change the rapid flow of the discharge into a slow flow. Generally, it can partially eliminate the kinetic energy of the discharge flow and shorten the length of the apron. It is an effective and economical energy dissipation facility. The stilling basin generally includes the stilling basin bottom plate connected with the overflow tank, the stilling basin side plates arranged on both sides of the stilling basin bottom plate, the stilling basin tail sill arranged at the end of the stilling basin, the tail of the stilling basin After the hurdle, set up the apron...

AI Technical Summary

Problems solved by technology

However, the problem with the bottom sill in this patent is that the energy dissipation of the water flow is insufficient, so that the water flow easily hits the bottom plate and the tail sill, causing cavitation or impact damage to the bottom plate or the tail sill

However, in this structure, a folded plate is set at the tail sill, so the depth of the stilling basin needs to be increased

Moreover, the water flow needs to cross the tail sill to reach the apron, so that the water at the tail sill cannot flow smoothly into the apron, and it will cause impact damage or cavitation at the tail sill

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