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Spent fuel storage tank vacuumizing method and system

A vacuum pumping system and vacuum pumping technology, applied in the field of nuclear power, can solve problems such as pipeline icing, equipment damage, and increased radiation exposure dose, and achieve the effects of protecting safety, improving vacuum pumping efficiency, and avoiding radiation exposure

Pending Publication Date: 2021-02-09
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

When performing vacuuming operations, it is necessary to pay attention to the speed of vacuuming. If the speed of vacuuming is too fast, the pipeline will freeze and damage the equipment. If the speed of vacuuming is too slow, the duration of the entire vacuuming operation will be greatly prolonged, resulting in personnel being exposed to radiation. Dosage increases substantially

Method used

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  • Spent fuel storage tank vacuumizing method and system
  • Spent fuel storage tank vacuumizing method and system
  • Spent fuel storage tank vacuumizing method and system

Examples

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Embodiment Construction

[0047] The technical solutions of the present invention will be further described in detail below in conjunction with the drawings and specific embodiments of the description.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the protection scope of the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0049]In the following description, the expression "some embodiments" refers to a subset of all possible embodiments, but it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments , and can be combined with each other without conflict.

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Abstract

The invention discloses a spent fuel storage tank vacuumizing method and system. The method comprises the steps: obtaining vacuumizing setting parameters which comprise a target vacuum degree value and / or a target vacuumizing rate; acquiring a current vacuum degree value,acquired by a vacuum meter, in a spent fuel storage tank and a current valve opening degree, acquired by a detector, of a vacuumizing regulating valve of the spent fuel storage tank, and determining a driving parameter according to the current vacuum degree value, the current valve opening degree and the target vacuum degree value; and outputting the driving parameter to a driving device, driving a valve rod of the vacuumizing regulating valve of the spent fuel storage tank to move through a driving shaft, and adjusting the valve opening degree of the vacuumizing adjusting valve.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and more specifically, the invention relates to a method and system for vacuuming a spent fuel storage tank. Background technique [0002] With the continuous growth of domestic nuclear power scale, the spent fuel produced by nuclear power plants has increased rapidly, and the resulting demand for spent fuel transportation, disposal and off-reactor storage has also shown a rapid increase trend. [0003] Among them, the spent fuel storage tank is a key equipment for dry storage of spent fuel. Its function is to package and contain spent fuel assemblies and radioactive substances, keep spent fuel assemblies in a subcritical state, and effectively remove spent fuel assemblies. waste heat. The spent fuel storage tank is filled with inert gas during fuel storage as an environment for spent fuel storage. After the spent fuel storage tank is filled and the inner cover is welded, the internal wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B37/14F04B39/10F04B41/02F04B49/06F04B49/22F04B51/00G21F5/015
CPCF04B37/14F04B39/10F04B49/22F04B49/06F04B51/00F04B41/02G21F5/015
Inventor 程伟王磊
Owner 中广核工程有限公司
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