Constant humidity cabinet used for making nuclear cable joint

Abstract

The invention discloses a constant humidity cabinet used for making a nuclear cable joint. The constant humidity cabinet comprises a hollow case and an upper cover arranged on the case, wherein the case and the upper cover commonly define a making space used for making the nuclear cable joint, the case is provided with a hand hole and a cable hole which are communicated with the making space and are provided with sealing sleeves, and the case and / or the upper cover are at least partially visible. Compared with the prior art, the constant humidity cabinet can realize rapid adjustment and can effectively maintain making environment humidity of the cable joint, the effective dustproof sealing effect is realized, and the constant humidity cabinet further has advantages of good dehumidifying effect, fast dehumidifying process, high cable joint making quality, simple operation, convenient movement and cost-saving property.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically, the invention relates to a constant humidity box used for making nuclear power cable joints. Background technique [0002] In the field of nuclear power industry technology, nuclear instrumentation system RPN, rod control and rod position system RGL, core measurement system RIC (hereinafter referred to as 3R system) are key systems of nuclear power plants, mainly used to monitor and control reactor reactivity. The transmission accuracy of cable signals between 3R system equipment is high and is easily affected by the construction environment (humidity) (for example, RPN cable insulation requirements are greater than 10 12 ohm), the construction environment (humidity) has a greater impact on the quality of the cable joints. Once there is a problem with the quality of the cable joints, it is very likely to restrict the status of the unit and even cause a stack jump. In...

AI Technical Summary

Problems solved by technology

The transmission accuracy of cable signals between 3R system equipment is high and is easily affected by the construction environment (humidity) (for example, RPN cable insulation requirements are greater than 10 12 ohm), the construction environment (humidity) has a greater impact on the quality of the cable joints. Once there is a problem with the quality of the cable joints, it is very likely to restrict the status of the unit and even cause jumping.

During the installation of the 3R system, the DEG / EVC / EVR nuclear island ventilation system is generally in the debugging period, and the operation is unstable. The start and stop will have a great impact on the humidity in the island, and even condensation will occur, which will easily cause the cable joint production process to be damp.

Temporary construction sheds and temporary dehumidifiers are temporary measures, the construction is very cumbersome and the sealing effect is limited, and additional costs will be incurred for each construction

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