Experimental device for two-phase heat transfer characteristic research and method for measuring wet steam dryness

A technology of experimental device and heat transfer characteristics, applied in the direction of measurement device, material thermal development, instrument, etc., can solve the problem of high experimental cost, and achieve the effect of reducing experimental cost, avoiding insulation sealing and boiling critical

Active Publication Date: 2015-02-04
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
  • Description
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Problems solved by technology

For electric heating experiments, if only a high-power power supply is added for a certain experimental research, the experimental cost will be relatively large

Method used

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  • Experimental device for two-phase heat transfer characteristic research and method for measuring wet steam dryness
  • Experimental device for two-phase heat transfer characteristic research and method for measuring wet steam dryness
  • Experimental device for two-phase heat transfer characteristic research and method for measuring wet steam dryness

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Embodiment 1

[0039] see figure 1 , the experimental device 100 for the study of the heat transfer characteristics of steam-water two-phase flow shown in the preferred embodiment of the present invention, the experimental device 100 can not only meet the conditions of high pressure and high dryness required for the experiment, but also solve the problem of the existing technology The medium device needs to be insulated and sealed and has defects of boiling criticality, etc., avoiding the use of high-power heat sources and reducing costs. The experimental device 100 includes an experimental body 10, a steam homogenizer 20, a first steam-water mixer 30, and a second steam-water mixer. 40. Steam injection system, first water injection system, second water injection system, and data acquisition and measurement system (not shown).

[0040] One end of the experimental body 10 communicates with the steam homogenizer 20 , and the other end communicates with the second steam-water mixer 40 . The fi...

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PUM

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Abstract

The invention discloses an experimental device for two-phase heat transfer characteristic research and a method for measuring wet steam dryness. The experimental device comprises a steam boiler, a first steam-water mixer, an experimental body and a first water injection system for providing cooling water, wherein both the first water injection system and the steam boiler are communicated with the first steam-water mixer; the first steam-water mixer is communicated with the experimental body; the cooling water provided by the first water injection system is mixed with wet steam provided by the steam boiler in the first steam-water mixer and then the mixture flows into the experimental body. The experimental device for the two-phase heat transfer characteristic research has the characteristics that the steam boiler is adopted to provide high-temperature and high-pressure steam instead of a traditional electric heating manner, the wet steam provided by the steam boiler and the cooling water by the first water injection system are mixed reasonably to realize the experimental working conditions of high flow, high pressure and high dryness, and the problems of insulating sealing and critical boiling are avoided because the experimental device has no pre-heating section and the experimental body also does not need to be heated.

Description

technical field [0001] The invention relates to the field of experimental devices for researching heat transfer characteristics, in particular to an experimental device for researching heat transfer characteristics of high-temperature and high-pressure two-phase flow and an indirect measurement method for the dryness of wet steam flowing through the experimental body in the device. Background technique [0002] For the steam-water two-phase flow heat transfer experiment under high temperature and high pressure, it is necessary to set different research parameters according to the research objectives and content, including system pressure, dryness and flow rate, so that the steam-water two-phase flow can be obtained by measuring the pressure drop or wall temperature of the experimental body. The flow or heat transfer properties of a mixture. [0003] The difficulty of the experiment lies in the experimental conditions of high pressure, high dryness, and large flow. The origi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20G01N33/00
Inventor 熊挺李勇李朋洲文博昝元峰
Owner NUCLEAR POWER INSTITUTE OF CHINA
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