Test unit of cavity sluice gate of nuclear power station reactor

Abstract

The invention discloses a test unit of a cavity sluice gate of a nuclear power station reactor. The test unit comprises a sluice gate, an inflatable seal element and a lip seal element which are assembled into a whole, and is characterized by being provided with a container, a reinforced concrete foundation, a doorframe, a water inlet pipe and a water discharge pipe, a water surface elevation display device, a gas supply system and a gas source, wherein the container is arranged on the reinforced concrete foundation, the doorframe is welded with the container into a whole, the sluice gate is inserted into the doorframe to separate the container into a water filling cavity A and an observation cavity B, the lower parts of the water filling cavity A and the observation cavity B are respectively provided with a manhole, the bottom of the doorframe is provided with a leak detection pipe for measuring the leakage rate of the gate, the water filling cavity A is provided with the water inlet pipe, the water discharge pipe and the water surface elevation display device, the upper part of the container wall of the water filling cavity A is provided with an overflow pipe, the inflatable seal element and the lip seal element are respectively and fixedly arranged on the frame of the sluice gate, and the inflatable seal element is connected with the gas source through the gas supply system. The test unit has a reasonable and scientific structure, the working conditions of the cavity sluice gate of the nuclear power station reactor can be satisfied, and the simulation water containing leakage test can be carried out on a product.

Description

technical field [0001] The invention relates to a test device for a sluice gate, in particular to a test device for manufacturing a stainless steel sluice gate for a reactor chamber of a nuclear power plant. Background technique [0002] In the existing CPR1000 and M310 nuclear power plants with one million kilowatts, the reactor cavity water gate (hereinafter referred to as: water gate) is made of stainless steel. The height of the gate body is about 10 meters, the width is about 7 meters, and the thickness is about 0.5 meters. It is a large welded structural part with inflatable seals and lip seals on the frame of the gate. The structure of the sluice gate is complex, and the straightness, verticality, width, and length of the frame require high precision. [0003] At present, the test of the sluice gate is to carry out the water leakage test during the installation of the nuclear power plant. During the test, once a product quality problem occurs, the only thing to do i...

AI Technical Summary

Problems solved by technology

During the test, once a product quality problem occurs, the only thing to do is to empty the liquid in the reactor pool, pull the gate out of the nuclear island for repairs, and then conduct the test again, which will seriously affect the construction period of the nuclear power plant.

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