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Pipeline capable of reducing influence of thermal stratification

A technology of thermal stratification and piping, applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve problems such as the difficulty of thermal stratification relief, to alleviate the impact of thermal stratification, enhance heat transfer, increase The effect of contact area

Inactive Publication Date: 2013-03-27
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the location of thermal stratification is affected by various factors such as the flow rate and flow rate of cold and hot fluids, it is more difficult to alleviate thermal stratification

Method used

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  • Pipeline capable of reducing influence of thermal stratification
  • Pipeline capable of reducing influence of thermal stratification
  • Pipeline capable of reducing influence of thermal stratification

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Embodiment Construction

[0021] The present invention proposes a piping design that reduces the effects of thermal stratification. The pipe design is divided into two parts, one part is the convex part of the inner wall of the pipe, and the other part is the heat pipe part connecting the cold end and the hot end of the pipe. Embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following descriptions are only exemplary and not intended to limit the scope of the present invention and its application. figure 1 is a schematic diagram of the piping design to reduce the effects of thermal stratification. image 3 , Figure 4 It is the heat pipe arrangement diagram in the heat pipe positioning grid.

[0022] The pipeline for reducing the influence of thermal stratification provided by this embodiment includes a cold section flowing through a low-temperature fluid and a hot section flowing through a high-temperature fluid. The cold se...

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Abstract

The invention discloses a pipeline capable of reducing the influence of thermal stratification, and belongs to the technical field of mechanical equipment and nuclear safety. The pipeline comprises a cold section flowing through a low temperature fluid and a hot section flowing through a high temperature fluid. The cold and hot fluids are mixed in the pipeline. The pipeline is characterized in that a bump is arranged on the inner wall of the pipeline, and the cold and hot sections of the pipeline are respectively connected with a hot pipe, so that heat is transferred to the cold section from the hot section of the pipeline. The pipeline provided by the invention can be used to replace pipelines which are easily subjected to thermal stratification in a nuclear power station, so that the influence of thermal stratification can be effectively alleviated, and the safety of the nuclear power station is protected.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment and nuclear safety, and in particular relates to a pipeline for reducing the influence of thermal stratification. Background technique [0002] In the system of nuclear power plants, due to the mixing of hot and cold fluids, thermal stratification will occur in the pipes. The condition for the formation of thermal stratification is the mixing of cold and hot fluids with low velocity in near-horizontal pipes. For example, for surge tubes of nuclear power plant regulators, thermal stratification is prone to occur due to the mixing of high-temperature water from the main pipeline and cooler water in the regulator. In addition, thermal stratification can also occur due to leakage of cold water into pipes containing hot water due to leaking valves. If thermal stratification occurs in the pipeline of a nuclear power plant, thermal shocks will occur at the interface between the hot and col...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/00
Inventor 周涛林达平汝小龙宋明强陈敏娜
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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