Method for dry protection of reactor core of dry reactor

A reactor and drying technology, which is applied in the fields of reactors, manufacturing reactors, processing of building materials, etc., can solve the problems of inconvenient drying operation, and achieve the effect of simple and convenient operation, saving construction period and easy operation.
CN104599729AActive Publication Date: 2015-05-06CHINA NUCLEAR IND 23 CONSTR
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NUCLEAR IND 23 CONSTR
Publication Date
2015-05-06

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Abstract

The invention belongs to the technical field of building and construction of a nuclear power plant. Aiming at solving the problem that the drying work of current dry protection is not very convenient, the invention provides a method for dry protection of a reactor core of a dry reactor. The method comprises the following steps: (1) pre-burying an inner heater; (2) taking concrete in the step (1) as a test block; (3) assembling the dry protection; (4) fixing an outer heater; (5) fixing the outer heater on the test block; (6) starting the outer heater and the inner heater and heating and drying the dry protection and the test block; (7) keeping the heat of the dry protection and the test block until the weight of the test block is constant after the test block is continuously weighed for three times; and (8) naturally cooling the dry protection. The method is easy to operate so that the drying work of the dry protection becomes simple and convenient and the construction period is shortened.
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Description

technical field

[0001] The invention belongs to the technical field of construction of nuclear power plants, and in particular relates to a method for dry protection of dry reactor cores. Background technique

[0002] Dry protection is an important part of nuclear power plant reactors, such as figure 1 As shown, the dry protection 10 is a thick-walled cylindrical structure. Dry protection includes upper dry protection and lower dry protection. The inner and outer diameters of the upper dry protection are 5560mm and 6710mm respectively, and the height is 3095mm. The inner and outer diameters of the lower dry protection are 5560mm and 6710mm respectively, and the height is 2200mm. After assembly, the overall hoisting of the dry protection is introduced into the core of the nuclear island to achieve the purpose of radiation protection and heat shielding. When making the dry protection, it is necessary to pour serpentine concrete between the inner wall 12 and the outer wall 11...

Claims

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