Efficient passive containment cooling system adopting transmission device

Abstract

The invention provides an efficient passive containment cooling system adopting a transmission device, when a break accident occurs, a heat exchange device is a core component used for achieving passive containment cooling, the heat exchange device is connected with an external water tank through an upper pipe section and a lower pipe section, and sprayed high-temperature steam is condensed on the outer surface of a heat exchange pipe. A collecting device is used for collecting a condensed coolant in a containment, and the upper section groove, the upper section drainage pipe and the reducing pipe can be used for collecting liquid condensed by the upper half part of the containment and the heat exchange device and are matched with the water bucket type transmission device to work. A coolant after acting and a coolant collected by a lower-section groove and a lower-section drainage pipe are sent to a pit to participate in reactor core cooling cycle. A water bucket type transmission device transmits kinetic energy of coolants in a pipeline to an impeller through a mechanical structure and conveys the kinetic energy to the position near the heat exchange device, and the heat exchange efficiency is improved in cooperation with fan blades blowing / sucking heat exchange pipes.

Description

technical field [0001] The invention relates to high-efficiency heat exchange equipment for a passive containment cooling system, and specifically refers to a high-efficiency passive containment cooling system using a transmission device. Background technique [0002] As a clean, efficient, and strategically valuable energy source, nuclear energy has always been valued by countries all over the world. Among them, nuclear power technology is the top priority of nuclear energy development, and it is also the main component of nuclear energy utilization in the world today. [0003] For a long time, a large amount of resources used in the development of nuclear power have been used to ensure the safety of the nuclear power plant itself. Most of the second-generation nuclear power plants currently in service in the world have corresponding active safety facilities designed to ensure that the core, primary circuit equipment, containment and other components will not fail in the e...

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Problems solved by technology

[0006] It should be noted that the optimized design of the heat exchange efficiency in the above-mentioned patents mainly focuses on the heat exchange water tank outside the containment, while the design for the inner tube bundle is less

When the steam condenses on the surface of the tube bundle, a corresponding gas boundary layer will be formed, which seriously affects the condensation heat transfer.

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