Nuclear power plant water intake blocking net erecting mechanism and installation method thereof

Abstract

The invention relates to a nuclear power plant water intake blocking net erecting mechanism. The erecting mechanism comprises a plurality of caissons which are positioned at a water intake of a nuclear power plant and are distributed at intervals, and a plurality of mounting racks used for erecting a blocking net, wherein the plurality of mounting racks are connected with the plurality of caissonsrespectively by means of connecting mechanisms; each mounting rack comprises a first fixing rack butted with the corresponding caisson, and a second fixing rack butted with an upper border rope of the blocking net, wherein the first fixing rack is connected with the second fixing rack in a detachable way. According to the nuclear power plant water intake blocking net erecting mechanism provided by the invention, the original caissons at the water intake of the nuclear power plant are utilized, and the mounting racks which can be fixedly connected with the caissons in a matching way are arranged, so that the erecting work of the blocking net at the water intake of the nuclear power plant is enabled to become simple and convenient, piling for fixing in deep sea is avoided, the erecting efficiency of the blocking net is further greatly increased, and the cost is accordingly lowered; in addition, the mounting racks are compact and reasonable in structural design as well as high in stability and tensile strength, thus avoiding damage caused by excessive tension.

Description

technical field [0001] The invention relates to the safety field of nuclear power plants, in particular to an erection mechanism and an installation method for a blocking net of a water intake of a nuclear power plant. Background technique [0002] In recent years, with the increasing number of cold source safety incidents at water intakes of nuclear power plants, a total of 61 incidents occurred between 2004 and 2008, most of which caused the power reduction of the units, and some even caused the shutdown of the units. Some events even have a direct impact on safety-related systems of nuclear power plants. At present, the most popular method in nuclear power and even thermal power is to install a blocking net at the water intake of the unit, which can not only effectively prevent floating debris and other marine debris, but also have a certain blocking effect on marine life, and can also be used according to actual conditions. Therefore, the deployment of blocking nets is ...

AI Technical Summary

Problems solved by technology

Most of the traditional arresting nets are deployed directly by the fixed devices on the beach or the water intake. However, due to the complicated site conditions in some factories, it is very difficult to fix the arresting nets according to the traditional piling method. The difficulty of piling on the seabed is extremely high and the operation is very difficult. , labor and time-consuming, piling cost investment is very large

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