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Passive safety system for eliminating water hammer induced by steam condensation

A safety system and steam condensation technology, which is applied in the fields of heat transfer and fluid mechanics, can solve problems such as steam condensation water hammer, achieve the effect of eliminating steam water hammer, improving natural circulation capacity, and broadening the application range

Pending Publication Date: 2021-04-02
HARBIN ENG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a passive safety system that eliminates water hammer induced by steam condensation. The system innovatively designs measures to eliminate water hammer caused by steam condensation, and solves the problem of existing passive safety systems under high gas content conditions. The problem of steam condensate water hammer under the environment broadens the scope of engineering application of the system

Method used

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  • Passive safety system for eliminating water hammer induced by steam condensation
  • Passive safety system for eliminating water hammer induced by steam condensation
  • Passive safety system for eliminating 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] combine Figure 1 to Figure 4 , the present invention includes a heat exchanger 1, a heat pipe section 2, a floating platform wall 3, an elbow 4, a vapor elimination device 5, a cold pipe section 6, and an ocean 7. The elbow 4 and the steam elimination device 5 are located in the ocean 7, and the elbow 4 is welded on the wall 3 of the floating platform. The steam elimination device 5 is connected in a certain way by the twisted band 5-1, the hole pipe 5-2 and the snap ring 5-3, and is installed vertically on the top of the elbow 4. The twisted band 5-1 is installed on the inner wall of the snap ring 5-3, and the outer wall of the snap ring 5-3 is welded on the inner wall of the hole pipe 5-2. There are flow holes 5-4 on the side and the top surface of the orifice tube, and the sum of the areas of all flow holes is greater tha...

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Abstract

The invention provides a passive safety system for eliminating a water hammer induced by steam condensation. The passive safety system is used for eliminating the water hammer induced by steam condensation by installing an elbow and a steam eliminating device on a seawater side. According to the passive safety system, a twisted belt is installed in a hole pipe through a clamping ring, so that a steam-water mixture generated by a heat exchanger spirally flows upwards in a flow channel formed by the twisted belt and the hole pipe and directly makes contact with seawater through the flow holes inthe side face and the top face of the hole pipe to be condensed, he steam is gradually condensed under the stirring effect of the twisted belt, so that the effect of eliminating the water hammer induced by steam condensation is achieved. The passive safety system has the advantages that the passive safety system is simple in structure and wide in application range, water hammers induced by pipeline and seawater side steam condensation can be eliminated at the same time, the natural circulation capacity of the passive safety system is improved, 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 eliminating 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 steam plug, the rapid condensation of the steam plug will cause violent collision of the liquid columns at both ends, and the steam condensation will induce 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. In order to avoid condensation...

Claims

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Application Information

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IPC IPC(8): F28B9/00F28B9/10
CPCF28B9/00F28B9/10
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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