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A sealing test device and test method for the isolation valve of the mechanical penetration part of the nuclear power plant containment

A nuclear power plant containment and sealing test technology, applied in the field of nuclear safety, can solve the problems of complicated operation and low safety, achieve precise shunting, protection without excessive loss, and reduce the cost of testing equipment and human resource costs

Active Publication Date: 2020-08-11
中广核工程有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the technical problems of low safety and complicated operation in the prior art, the present invention provides a low-cost labor cost, safe and reliable isolation valve sealing test device and test method for the containment mechanical penetration part of nuclear power plant

Method used

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  • A sealing test device and test method for the isolation valve of the mechanical penetration part of the nuclear power plant containment
  • A sealing test device and test method for the isolation valve of the mechanical penetration part of the nuclear power plant containment
  • A sealing test device and test method for the isolation valve of the mechanical penetration part of the nuclear power plant containment

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Embodiment 1

[0058] In the first embodiment, the selection module can be used to controlly select different delivery paths, and different paths can be selected according to the pressure of the water source, which provides a more reliable water pressure guarantee, and the corresponding water source does not need to go through the water supply adjustment module 102. Directly in the ring pipe module, saving time and cost.

[0059] See attached figure 2 , with figure 2 It is the second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the SED water source directly enters the water supply regulation module 102 without judgment, and the treatment and pressure of the water source are all realized in the water supply regulation module 102 . Wherein, it includes a SED water source, a water supply regulation module 102, a water supply main pipe 103, and a test system composed of a multi-layer ring pipe module 104. The selection modu...

Embodiment 3

[0065] The implementation of the present invention provides a sealing test method for the isolation valve of the mechanical penetration part of the nuclear power plant containment, which is used to provide the isolation valve with a predetermined pressure of water or gas through the test valve, see image 3 , the method includes:

[0066] S1. Real-time detection of the actual water source pressure of the water supply pipe network system of the SED nuclear island plant;

[0067] S2. Judging whether the predetermined test pressure requirement is met according to the detected actual water source pressure, if the predetermined test pressure requirement is met, switch to the first delivery path, otherwise switch to the second delivery path for pressure adjustment;

[0068] S3. The water supply adjustment module adjusts the pressure that does not meet the test requirements to a predetermined pressure that meets the requirements;

[0069] S4. Select a suitable water source interface...

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Abstract

The invention discloses a sealing test device and sealing test method for an isolation valve of a mechanical penetration piece of a safety shell of a nuclear power plant. The device comprises the following parts: a pressure gauge for acquiring a water pressure signal, a controller for identifying the water pressure signal, a booster pump for increasing the water source pressure, a stabilizing valve for stabilizing water pressure, a power control module for controlling the booster pump and the stabilizing valve, a water supply main pipe for correspondingly connecting different conveying paths and satisfying a predetermined pressure water source; and a ring pipe module for connecting the water supply main pipe and an isolation valve, and detecting the air tightness of the valve. The sealingtest device and sealing test method solve the problem that the working time of the radiation control zone of the existing solution is long by the pressure detection and selection of the water supply main pipe to greatly shorten the water injection time, and synchronously no longer need a leakage detecting trolley of the penetration piece during the water pressure detection by a ring pipe structurewhen testing the air tightness of the penetration piece, which not only saves the equipment cost, but also reduces the labor intensity of the tester.

Description

technical field [0001] The invention relates to the technical field of nuclear safety, in particular to a method and a device for measuring the leak rate of a containment vessel to measure the tightness of a containment vessel isolation valve. Background technique [0002] The containment vessel is the third physical barrier for nuclear power plants to prevent the escape of radioactive materials. In the operation technical specification, there are strict restrictions on the sealing of the containment under various operating conditions, so as to ensure that the containment has the function of containing radioactive substances in the event of a loss of water accident. Therefore, the commissioning program and operation program of nuclear power plants require online sealing performance measurement of containment isolation valves. [0003] At present, for the tightness test of the penetration isolation valve, the test medium can be water or air. When using air for tightness tes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/28
CPCG01M3/2876
Inventor 何锐赵健张波李少纯陈威沈东明赵岩张复彬
Owner 中广核工程有限公司
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