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Intermediate heat exchanger for high-temperature gas cooled reactor

An intermediate heat exchanger, high temperature gas-cooled reactor technology, applied in indirect heat exchangers, reducing greenhouse gases, reactors, etc., can solve the problems of reducing creep and fatigue properties, and reducing the high temperature instantaneous rupture strength of materials

Active Publication Date: 2021-02-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increase in temperature not only greatly reduces the high-temperature instantaneous fracture strength of the material, but also greatly reduces its creep and fatigue properties.

Method used

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  • Intermediate heat exchanger for high-temperature gas cooled reactor
  • Intermediate heat exchanger for high-temperature gas cooled reactor
  • Intermediate heat exchanger for high-temperature gas cooled reactor

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Embodiment Construction

[0023] Aiming at various problems existing in the prior art, the present invention proposes an intermediate heat exchanger for high-temperature gas-cooled reactors. Through reasonable tube bundle layout, tube side, shell side inlet and outlet location design, tube bundle support structure, design of key high-temperature components, etc., the intermediate heat exchanger not only solves the reliability problem of the heat exchanger itself under high-temperature heat exchange conditions, but also improves The integration of high temperature heat exchangers is improved.

[0024] The principles of the invention will now be described with reference to various exemplary embodiments shown in the drawings. Like reference numerals refer to like parts in the figures. Those skilled in the art should understand that the accompanying drawings are intended to schematically illustrate preferred embodiments of the present invention, and are not intended to limit the scope of the present inven...

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Abstract

The invention relates to an intermediate heat exchanger for a high-temperature gas cooled reactor. The intermediate heat exchanger comprises a shell (110), a central cylinder (120), a heat exchange assembly (130), a primary side heat insulation layer (140) and a draught fan (M). The shell (110) is provided with a primary side medium inlet (114). The first end, away from the primary side medium inlet (114), of the central cylinder (120) is supported by the shell (110). The heat exchange assembly (130) is supported by the central cylinder (120). The draught fan (M) is integrated in the shell (110) and arranged to supply a cold primary side medium from the heat exchange assembly (130) to a primary side medium outlet (115). Thus, the first end portion, bearing the maximum stress, of the central cylinder is at the possible lowest temperature, and high-temperature creep and fatigue failure are prevented. Moreover, the integrated design of the intermediate heat exchanger is further realized,pipeline connecting points are reduced, the failure risk is reduced, and the installation and replacement of the intermediate heat exchanger are simplified.

Description

technical field [0001] The invention relates to an intermediate heat exchanger for a high-temperature gas-cooled reactor. Background technique [0002] The intermediate heat exchanger is an essential component for utilizing the high temperature process heat of the high temperature gas-cooled reactor. Intermediate heat exchangers for high temperature gas-cooled reactors are nuclear primary equipment that isolates the radioactive primary loop medium from the intermediate loop medium leading to process heat application users. Therefore, the safety and reliability of the intermediate heat exchanger is of great significance to the safety and economy of the high temperature gas-cooled reactor. [0003] Existing heat exchangers are generally used at relatively low temperatures, resulting in relatively small thermal expansion, and there is no need to consider the problems of creep of metal materials and significant reduction in strength of metal materials caused by temperature rise...

Claims

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Application Information

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IPC IPC(8): F28D21/00G21C15/02
CPCF28D21/00G21C15/02F28D2021/0054Y02E30/30
Inventor 李晓伟吴莘馨张作义史力刘吉张易阳赵加清闵琪
Owner TSINGHUA UNIV
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