Passive safety system for inhibiting water hammer induced by steam condensation

A safety system, steam condensation technology, applied in the fields of heat transfer and fluid mechanics, can solve problems such as steam condensation water hammer, achieve the effect of eliminating water hammer, inhibiting steam condensation induced water hammer, and strengthening condensation heat transfer capacity

Active Publication Date: 2021-03-30
HARBIN ENG UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a passive safety system that suppresses water hammer induced by steam condensation. The system innovatively proposes a design for eliminating water hammer induced by steam condensation, and solves the occurrence of existing systems under high gas content conditions. The problem of steam condensate hammer, broadening the application range of the system

Method used

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  • Passive safety system for inhibiting water hammer induced by steam condensation
  • Passive safety system for inhibiting water hammer induced by steam condensation
  • Passive safety system for inhibiting water hammer induced by steam condensation

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] The invention includes a heat exchanger 1, a heat pipe section 2, a floating platform wall 3, an orifice compartment 4, a cold pipe section 5, and an ocean 6. It is characterized in that: the orifice compartment 4 is located in the ocean 6 and welded on the wall 3 of the floating platform. The orifice compartment 4 is a three-layer square structure formed by splicing the orifice 7 and the orifice 8, and forms four sections together with the wall 3 of the floating platform. Wherein the first layer of square body 4-1 is spliced ​​by orifice plate 7, the second layer of square body 4-2 is spliced ​​by orifice plate 8, and the third layer of square body 4-3 is spliced ​​by orifice plate 7. The outlet nozzle of the heat pipe section 5 is located at the center of the projection of the three-layer orifice plate to the wall 3 of the f...

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Abstract

The invention provides a passive safety system for inhibiting water hammer induced by steam condensation, which is used for inhibiting the steam condensation water hammer by installing a pore plate compartment at a pipe orifice of a heat pipe section. The pore plate compartment formed by splicing two pore plates is adopted, so that steam generated by a heat exchanger is condensed step by step in the pore plate compartment, and the phenomenon of the water hammer induced by the steam condensation in the heat pipe section due to violent condensation under low flow is fundamentally eliminated. Inaddition, the pore plate compartment avoids direct contact between steam and low-temperature seawater, the condensation heat exchange coefficient is reduced, and the water hammer of the steam on the seawater side is effectively restrained. The system has the advantages that the structure is simple, steam condensation induced water hammers on a pipeline and the seawater side can be restrained at the same time, and the application range is wide; and meanwhile, the improvement is convenient and easy, and engineering application is facilitated.

Description

technical field [0001] The invention relates to a passive safety system for suppressing water hammer induced by steam condensation, belonging to the fields of heat transfer and fluid mechanics. Background technique [0002] In the passive safety system of floating nuclear power plants, the ocean usually acts as the final heat sink for absorbing waste heat. Under two-phase conditions, the saturated steam generated by the heat exchanger will inevitably come into direct contact with supercooled seawater. Due to intense condensation, sea water will pour back into the heat pipe. When the steam is surrounded by seawater and forms a vapor plug, the vapor plug condenses rapidly and causes the liquid columns at both ends to collide violently, resulting in water hammer. The occurrence of water hammer will generate a large pressure pulse, and cause the pipeline to oscillate and even destroy the integrity of the system. Due to the condensation-induced water hammer phenomenon caused b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28B3/02F28B9/00
CPCF28B3/02F28B9/00
Inventor 丁铭孙建闯冉旭杨帆李峰夏爽曹夏昕边浩志
Owner HARBIN ENG UNIV
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