Mounting and fixing device of nuclear power station water discharging port flashboard guide groove auxiliary anode

Abstract

The invention belongs to the technical field of nuclear power maintenance and particularly relates to a mounting and fixing device of a nuclear power station water discharging port flashboard guide groove auxiliary anode. In the embodiment of the invention, a placing cylinder is connected with a pedestal; the pedestal can fix the placing cylinder, in which the auxiliary anode is placed, at the bottom end of a water body in water flow of the water discharging port, so that impact on the auxiliary anode and a cable by sea water can be effectively reduced and the fact that the auxiliary anode isthrust and washed away is avoided; in addition, a hollow structure of the side wall of the placing cylinder enables the auxiliary anode to be completely contacted with the sea water, the protective efficacy of a cathode protective system is enhanced and impact on the placing cylinder by the sea water can be reduced, so that the auxiliary anode can exert effect stably, has longer service life and reduces manual maintenance risk and cost.

Description

technical field [0001] The invention belongs to the technical field of nuclear power maintenance, and in particular relates to an installation and fixing device for an auxiliary anode of a gate plate guide groove of a nuclear power station drain. Background technique [0002] Because nuclear power plants need a large amount of water to absorb the waste heat generated during the power generation process, nuclear power plants are usually built by the sea. Gates are installed at the water intake and outlet of the power plant to ensure that the power plant can be isolated from seawater when necessary. Among them, because the gate guide groove is in a relatively severe corrosion environment for a long time, it is usually protected by a cathodic protection system. Among them, the gate guide groove of the drain adopts the method of impressed current cathodic protection. [0003] Due to the huge amount of water coming out of the discharge outlet, the water flow is turbulent and th...

AI Technical Summary

Problems solved by technology

[0003] Due to the huge amount of water coming out of the discharge outlet, the water flow is turbulent, and the impact is violent, which has caused many difficulties in the installation of auxiliary anodes in the cathodic protection system.

In related technologies, steel pipes are used to install and fix the auxiliary anode. However, after use, it is found that due to the harsh corrosive environment, the steel pipes are severely corroded, and finally break under the impact of water flow due to the decrease in strength.

There are also PVC pipes with excellent corrosion resistance for installation, but they are often not strong enough and will be washed away by water soon after installation.

As a result, maintenance personnel often need to reinstall or maintain the auxiliary anode of the drain, which not only increases the cost, but also the working condition of the drain is bad, the operation risk is high, and frequent operations have great potential safety hazards

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