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Visualized narrow rectangular natural circulation system

A circulatory system and rectangle technology, applied in the field of visualization of narrow rectangle natural circulation system, can solve the problems of CHF, difficult design and processing, no visualization window, etc., and achieve the effect of system safety and reliability

Inactive Publication Date: 2012-09-12
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The change of mass flow rate will jeopardize the safety of exporting heat to a large extent, which may eventually lead to the occurrence of CHF
[0004] Due to the difficulty of design and processing, most of the systems used to study natural circulation are fully closed and have no visualization window; or a few small openings are opened on the closed window to observe the flow phenomenon; or the length of the visualization window is far less than 1000mm
Although it is measured by other methods, it cannot be directly observed, and the conclusions are not intuitive and accurate, which will limit engineering operations and scientific experimental research

Method used

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  • Visualized narrow rectangular natural circulation system
  • Visualized narrow rectangular natural circulation system
  • Visualized narrow rectangular natural circulation system

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] like figure 1 As shown, the structure of a visualized narrow rectangular natural circulation system is as follows: preheating section 5, rectangular channel visualized heating section 6, condenser 7 and turbine flowmeter 4 are assembled together through pipelines, thereby forming a loop, and the preheating section 5 is located at the bottom of the circuit, the rectangular channel visualization heating section 6 is located on the left side of the circuit, the condenser 7 is located at the top of the circuit, and the turbine flowmeter 4 is located on the right side of the circuit; the water tank 1 passes through the first valve 16 and the pipeline Assembled together with the preheating section 5, the nitrogen cylinder 2, the second valve 17 and the surge tank 3 are assembled together through the pipeline, the surge tank 3 is assembled with...

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Abstract

The invention discloses a visualized narrow rectangular natural circulation system and belongs to the field of thermo-technical waterpower safety. A circulation working medium in the system is water and a water flowing phenomenon can be observed and recorded through a visualized window. The specific flow is as follows: a loop of the system is used for heating the working medium water by a heating section, so that a rectangular channel is heated and boiled; then the working medium water is cooled by a condenser at the top and flows through a lower descending section; and a pre-heater arranged at the bottom is used for pre-heating to generate poor density and realize natural circulation. When the visualized narrow rectangular natural circulation system is operated, the flowing phenomenon of the visualized window can be observed. The system can be successfully manufactured after strict and accurate design and calculation. The visualized narrow rectangular natural circulation system has the beneficial effects that the heating section has a visualized quartz glass window with the length of 1000 mm so that the long-period operation under a certain pressure and a higher temperature is realized; and the system is safe and reliable and is good for total mechanical equipment configuration, engineering experiments and thermo-technical waterpower scientific researches.

Description

technical field [0001] The invention belongs to the field of thermal hydraulic safety, in particular to a visualized narrow rectangular natural circulation system. Background technique [0002] Natural circulation has important utilization value in various fields of industry. For example, in thermal power, there are natural circulation boilers; in nuclear power, natural circulation is used to extract waste heat from the core in severe accidents to ensure the safety of nuclear reactors; especially the third-generation advanced reactor AP1000 uses more natural circulation technology. Utilizing natural circulation in the military aspect saves the traditional circulating power pump, which can increase the concealment of the submarine and enhance its strategic significance. In addition, the narrow rectangular channel can enhance heat transfer, reduce the volume of heat exchange, and make the structure compact. Therefore, the natural circulation of the narrow rectangular channel...

Claims

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Application Information

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IPC IPC(8): G01M10/00
Inventor 周涛邹文重张蕾苏子威盛程洪德训
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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