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Heating apparatus, and nuclear reactor core power simulation apparatus and method

A technology for heating devices and nuclear reactors, applied in the field of simulation devices, can solve problems such as uneven power distribution of nuclear reactor cores

Active Publication Date: 2017-03-22
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing core power simulation methods all use uniform distribution simulation. In order to improve the simulation accuracy of nuclear reactor core thermal hydraulic experiments, it is very necessary to invent an experimental system and method that truly simulates the uneven distribution of nuclear reactor core power.

Method used

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  • Heating apparatus, and nuclear reactor core power simulation apparatus and method
  • Heating apparatus, and nuclear reactor core power simulation apparatus and method
  • Heating apparatus, and nuclear reactor core power simulation apparatus and method

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Such as Figure 1 to Figure 3 As shown, a heating device includes an electric heating element 2, and the electric heating element 2 includes an element a and an element b, and both the element a and the element b include an electric heating wire 6, and the electric heating wire 6 is strip-shaped , one end of the electric heating wire 6 is a terminal, and the terminals of each electric heating wire 6 are connected with two wires 9 for feeding current to each electric heating wire 6;

[0046] In the element a, along the length direction of the element a, from the terminal of the element a to the other end, the heating power of each point of the electric heating wire 6 increases monotonically and then decreases monotonically, and the maximum point of the heating power of the element a is close to The terminal of the electric heating wire 6;

[0047] In the element b, along the length direction of the element b, from the terminal of the element b to the other end, the heat...

Embodiment 2

[0059] The present embodiment is further limited on the basis of embodiment 1, as Figure 1 to Figure 3 As shown, as a further technical solution of the above heating device: as a specific implementation form of the electric heating wire 6, the electric heating wire 6 is in a U-shaped structure, and the terminal of the electric heating wire 6 is the open end of the U-shaped structure. Each end of the opening end of each electric heating wire 6 is connected with a wire 9, and in each electric heating wire 6, from the bottom end of the electric heating wire 6 to the opening end, the cross-sectional area of ​​the electric heating wire 6 first increases monotonically and then monotonically decrease. In the above structure, the length direction corresponding to the electric heating element 2 is from the bottom end of the electric heating wire 6 to the opening end. The electric heating wire 6 in this way is easy to manufacture. The heating power of the point changes smoothly, which...

Embodiment 3

[0063] This embodiment further limits this case on the basis of the technical solution provided in embodiment 1: as Figure 1 to Figure 3 , as a further technical solution of the nuclear reactor core power simulation device described above, the fixing device 4 is a bolt threaded on each cladding 3, and the bolt provides compressive stress to the element a or element b, The fixation of element a or element b in the corresponding enclosure 3 is completed. In this solution, it is set that the fixing device 4 is a bolt, which not only makes the implementation of the fixing device 4 simple, but also facilitates the adjustment of the position of the components in the corresponding casing 3 . As a person skilled in the art, when the above bolts are threaded on the wall of the cladding 3, and the two sides of the element a or element b in the cladding 3 are respectively constrained by the inner wall of the cladding 3 and the compressive stress at the end of the bolt, the element a can...

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Abstract

The invention discloses a heating apparatus, and a nuclear reactor core power simulation apparatus and method. According to the corresponding apparatus and method, uneven electric heating elements with different axial power distribution which can be matched with life period initial stage and ending stage of nuclear reactor core fuel elements are manufactured; the two kinds of uneven electric heating elements are directly inserted into a cladding pipe to realize reactor core power axial uneven distribution simulation at the nuclear reactor life period initial stage and ending stage; and by combination of the two kinds of uneven electric heating elements, and by controlling the inserting depth of the uneven electric heating elements through an electric heating element position fixing and regulating apparatus, the reactor core power axial uneven distribution simulation of the nuclear reactor in different stages can be realized. The apparatus and the method are simple and feasible, and reactor core power axial and radial uneven distribution of the nuclear reactor in different life periods can be accurately reflected.

Description

technical field [0001] The invention relates to the technical field of a simulation device for simulating the working state of a nuclear reactor, in particular to a heating device, a nuclear reactor core power simulation device and a method. Background technique [0002] In the research of nuclear reactor thermohydraulic experiments, it is necessary to simulate the power of the core under normal operating conditions and accident conditions, and to study the flow, heat transfer, critical heat flux and core fluid flow under normal operating conditions and accident conditions. Thermal hydraulic characteristics such as fuel element safety. Therefore, the simulation accuracy of core fuel elements directly affects the results of nuclear reactor core thermal-hydraulic experiments. [0003] The existing core power simulation methods all use uniform distribution simulation. In order to improve the simulation accuracy of nuclear reactor core thermal hydraulic experiments, it is very ...

Claims

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Application Information

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IPC IPC(8): H05B3/00G21C17/00
CPCG21C17/001H05B3/00Y02E30/30
Inventor 彭传新昝元锋白雪松张妍卓文彬闫晓
Owner NUCLEAR POWER INSTITUTE OF CHINA
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