4results about How to "Solve scour" patented technology

This invention discloses a multifunctional energy dissipation and scour prevention device for the downstream of a sluice gate and its operation method. It includes a flow guiding unit comprising a rotating flow guiding pier wall, two automatically retractable flow guiding pier arrays on one side of the rotating flow guiding pier wall, a wing wall flow guiding pier jet array on one side of the rotating flow guiding pier wall, and a central retractable flow guiding pier array on one side of the two automatically retractable flow guiding pier arrays; a scour prevention unit comprising a downstream wing wall of the sluice gate, and a downstream stilling basin apron located at the bottom of the downstream wing wall of the sluice gate; and a measurement unit comprising an upstream water level gauge, a downstream water level gauge on one side of the upstream water level gauge, an upstream flow velocity measuring device on one side of the upstream water level gauge, and a downstream flow velocity measuring device on one side of the downstream water level gauge. The beneficial effects of this invention are that it solves the scour problem of the riverbed and bank slopes downstream of the sluice gate, and improves the overall stability of the downstream area of ​​the sluice gate.

This utility model relates to a ladle casting bottom structure, comprising: a permanent bottom lining, at least one layer of slag line bricks, a ring working lining, a nozzle seat brick, a permeable brick, a surrounding brick layer, a casting bottom lining, a casting interlayer, and a ring wall permanent lining. The beneficial effects of this utility model are: it solves the problem of brick joint erosion caused by molten steel impact; the structural improvements help improve construction efficiency and reduce maintenance costs; the structural improvements help improve steel yield; the structural improvements help improve structural strength and durability; the ladle casting bottom structure is primarily a movable bottom casting structure, which is convenient to construct and easy to repair, allowing for localized excavation and repair; in actual use, this ladle casting bottom structure has a long service life and can be used continuously for more than 80 steelmaking processes at once; this ladle casting bottom structure is suitable for bottoms constructed with shaped brick masonry.

The utility model discloses a single vane wheel stirs and sucks medicine pump, including motor, single vane wheel stirs and sucks medicine pump still includes: the suction stirring mechanism for sucking and stirring medicament, wherein, the suction stirring mechanism includes: vane wheel casing and rotatablely arranged vane wheel body in vane wheel casing inside, vane wheel body side surface with the inner wall of vane wheel casing is spaced apart and is arranged, still respectively set up with the liquid inlet for sucking the liquid medicine of the inner chamber intercommunication of it and the liquid outlet of flowing out to stir the liquid medicine on vane wheel casing. This single vane wheel stirs and sucks medicine pump when using, overcomes the vane wheel medicine pump vane wheel and the flow passage of prior art and is easy to be blocked, and the vane wheel of vane wheel medicine pump will be subjected to the problem of the scouring and abrasion of particle, and through a vane wheel realizes the suction and stirring effect of liquid medicine.

The dam comprises a dam body, the top of the dam body is provided with a water retaining body extending in the transverse direction, the water retaining body is provided with a drainage hole with a valve, the downstream of the dam body is provided with lateral drainage ditches located on the two sides of the dam face, and the lateral drainage ditches are arranged in the dam face. A flexible energy dissipation layer is arranged on the dam face between the lateral drainage ditches, a longitudinal drainage ditch located in the center of the dam face and a net-shaped drainage ditch distributed along the dam face are arranged on the flexible energy dissipation layer, and the bottom outlet ends of the longitudinal drainage ditch, the net-shaped drainage ditch and the lateral drainage ditches are all connected with a stilling pool. According to the method, by comprehensively applying the modes of combining the characteristics of protective structure materials, the energy dissipation principle, the overtopping flood discharge capacity of the earth and rockfill dam and the like, the deformation coordination between the structure materials is improved, and meanwhile safety protection and safety operation of overtopping but not collapsing or overtopping and slow collapsing of small and medium-sized reservoir dam bodies are guaranteed.