A heat partition for built -in steam stabilizers

A technology of thermal insulation baffle and voltage stabilizer, which is applied in the direction of reactor, reduction of greenhouse gas, nuclear power generation, etc.

Active Publication Date: 2017-12-26
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the partitions in the above-mentioned prior art cannot be placed inside the reactor pressure vessel, soaked in the reactor coolant, withstand high temperature, high pressure and high radiation, and at the same time play the role of separating the built-in steam pressurizer and the reactor coolant system, this paper Invention provides an insulating barrier suitable for built-in steam pressurizers

Method used

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  • A heat partition for built -in steam stabilizers
  • A heat partition for built -in steam stabilizers

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, a thermal insulation partition suitable for a built-in steam pressurizer includes a housing 1, which is a hollow structure with a central cavity 5 disposed thereon, and a reflective foil is also disposed in the central cavity 5 slice 2.

[0034] In this embodiment, the above structure is used as the isolation part of the steam pressurizer and the reactor coolant, the outer casing 1 is used as a pressure-resistant part, and the central cavity 5 and the reflective foil 2 in the central cavity 5 are used as a heat insulation layer. . The shell 1 can be set to use metal plates such as stainless steel or titanium alloy. The material characteristics of the above shell 1 make it not only play the role of pressure-resistant parts, but also have good radiation resistance and high temperature resistance; the above reflective foil 2 is used The purpose of reducing convective heat transfer and radiation heat transfer is achieved through the reflection o...

Embodiment 2

[0037] The present embodiment is further limited on the basis of embodiment 1, as figure 1 with figure 2 As shown, in order to further strengthen the heat insulation effect of the present invention, the central cavity 5 is a sealed cavity, and the sealed cavity is a negative pressure cavity obtained by vacuuming. The above negative pressure chamber achieves the purpose by reducing convective heat transfer.

[0038] As an easy-to-install rebuttal foil structure, the reflective foil 2 includes a flat plate foil 21 and a corrugated plate foil 22, the flat plate foil 21 and the corrugated plate foil The surface of 22 is smooth surface.

[0039] As a kind of dense convective heat transfer can be suppressed through multiple layers, so that the reflective foil 2 has a better technical effect of reflecting heat radiation and reducing convective heat transfer, and at the same time facilitates the installation of flat plate foil 21 and corrugated plate foil 22, The structural form tha...

Embodiment 3

[0045] This embodiment is further limited on the basis of any one of the technical solutions provided by any one of the above embodiments, such as figure 1 As shown, in order to enable the present invention to better adapt to fluctuations between the internal reactor coolant of the built-in steam stabilized pressure and the reactor coolant of the external reactor coolant system, the shell 1 is also provided with a fluctuating channel 4 penetrating the shell 1 . The above fluctuating channel 4 promptly serves as a communication channel.

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Abstract

The invention discloses a thermal insulating partition suitable for a built-in steam pressurizer, which comprises a shell, the shell is a hollow structure with a central cavity arranged thereon, and a reflective foil is also set in the central cavity. The invention provides a separation device that can be used inside the reactor pressure vessel and can realize the separation of the built-in steam pressurizer and the reactor coolant system. The isolation part has a simpler structure and smaller volume, which can effectively reduce the volume of the reactor pressure vessel with the built-in steam regulator; further, the reflective foil set in the above structure reduces the built-in steam regulator. The heat dissipation of the press, so the present invention also has the effect of reducing the electric heating power of the built-in steam press stabilizer.

Description

technical field [0001] The invention relates to the field of heat insulation design of a pressure stabilizer of a reactor coolant system in a pressurized water reactor nuclear power plant, in particular to a heat insulation partition suitable for a built-in steam pressure stabilizer. Background technique [0002] In the pressurized water reactor nuclear power plant, the light water coolant in the primary circuit passes through the fuel assembly located in the pressure vessel, takes away heat, and transfers to the secondary circuit water in the steam generator to produce steam, and the steam passes through to drive the turbine generator generate electricity. [0003] In order to ensure the safe and stable operation of the primary circuit, its pressure must be controlled and adjusted. The main means of pressure control is to set the steam regulator. At present, the pressure stabilizing system of nuclear power plants is designed with an external steam regulator, which is conn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C11/08
CPCG21C11/083Y02E30/30
Inventor 易经纬隋海明邓礼平陈志辉王亮谢杨赫荣辉杨钊
Owner NUCLEAR POWER INSTITUTE OF CHINA
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