Float-type drop energy-eliminating noise-reducing device

Abstract

A floating energy dissipation and noise reduction device, which is composed of a noise reduction honeycomb panel, a supporting frame, and a floating body. The noise reduction honeycomb panel is arranged on the supporting frame, and the floating body is arranged under the supporting frame. Placed in the pool of the cooling tower, the distance between the lower end of the noise-reducing honeycomb panel and the water surface of the pool is 100-110 mm; the noise-reducing honeycomb panel is composed of several pieces of PVC plastic molding boards, and there are several open ends on it. Special-shaped pipes, each special-shaped pipe is provided with a collection pipe, an inclined-surface noise reduction pipe, and a curved energy-dissipating pipe from top to bottom, and multi-stage energy-dissipating grooves and shunt grooves are arranged on the curved surface energy-dissipating pipe; the supporting frame is made of several FRP I-shaped Profiles, connecting rods, and spacers are connected into a frame structure; since the device is placed in the pool of the cooling tower, the distance between the lower end surface of the noise-reducing honeycomb panel and the water surface of the pool is a constant value, which can effectively prevent the secondary noise of falling water generated, and the noise reduction effect is stable.

Description

technical field [0001] The invention relates to a falling water noise reducing device, in particular to a falling water noise reducing device in a cooling tower of a power plant. Background technique [0002] With the rapid development of the power industry and the continuous improvement of environmental protection requirements, the State Power Corporation has proposed specific noise indicators for newly-built cooling towers. The noise must meet the relevant national standards, and the construction of cooling towers without noise reduction facilities is not allowed. For existing cooling towers, noise reduction technical transformation must also be carried out within a time limit, otherwise production must be stopped for rectification, and the noise will not be accepted if it does not meet the standard. At present, most of the cooling towers in various power plants use fiber mesh noise reduction pads to reduce noise. Falling water directly hits the noise reduction pads. The n...

AI Technical Summary

Problems solved by technology

For existing cooling towers, noise reduction technical transformation must also be carried out within a time limit, otherwise production must be stopped for rectification, and the noise will not be accepted if the noise does not meet the standard

At present, most of the cooling towers in power plants use fiber mesh noise reduction pads to reduce noise. The falling water directly hits the noise reduction pads. The noise reduction effect is not obvious, and the mesh is small and easily blocked by impurities.

The noise generated by existing cooling towers has seriously affected people's living and working environment quality, and has become a source of noise pollution in the new era

In order to effectively reduce the water falling noise of the cooling tower, our factory discloses a cooling tower falling water noise reducer in the patent No. 01230431. Although the noise reducer adopts the principle of slope noise reduction, so that the falling water is in contact with the slope of the honeycomb panel, its noise reduction effect is greatly improved compared with the conventional mesh noise reduction pad, but it lacks the falling water energy dissipation structure and will generate secondary noise

The noise reduction device containing the falling water noise reducer of the cooling tower is fixed above the pool. Since the device is fixed above the water pool through the fixing frame, in actual use, the distance between the lower end of the falling water noise reducer and the water surface of the pool varies with the water level of the pool. The noise reduction effect of this kind of falling water noise reduction device is unstable, and it is difficult to achieve the best noise reduction effect

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