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Experiment system for measuring migration and sedimentation of granular corrosion products in pipeline

A technology of corrosion products and experimental systems, applied in the field of multiphase flow measurement, can solve problems that have not been disclosed before

Inactive Publication Date: 2013-12-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the experimental measurement system for the migration and deposition of granular corrosion products under multiple influencing factors has not yet been published.

Method used

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  • Experiment system for measuring migration and sedimentation of granular corrosion products in pipeline
  • Experiment system for measuring migration and sedimentation of granular corrosion products in pipeline
  • Experiment system for measuring migration and sedimentation of granular corrosion products in pipeline

Examples

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Embodiment Construction

[0025] The invention provides an experimental system for measuring the migration and deposition of granular corrosion products in pipelines. The invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0026] like figure 1 As shown, a mixing device 5 is set in the water tank 4, and a pipeline is set at the bottom of the water tank 4, which is connected with the first valve 6, the transition section 7, the pump 8, the gate valve 9, the first test section 10, the turbine flowmeter 11, the pressure gauge 12, The second test section 13 , the third test section 14 , the fourth test section 15 , and the second valve 16 are sequentially connected and connected back to the water tank 4 .

[0027] Obtain the desired particle size range through a specific mesh 1, and weigh it with a precision balance 2 (with an accuracy of 1 / 10,000), and place the particles to be tested with known particle size and mass in the water tank 4, The ex...

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Abstract

The invention belongs to the technical field of multiphase flow measurement and particularly relates to an experiment system for measuring migration and sedimentation of granular corrosion products in a pipeline. The experiment system is characterized in that a blending device is arranged in a water tank, and the pipeline is arranged on the bottom of the water tank, is sequentially connected with a first valve, a transition section, a gate valve, a first experiment section, a turbine meter, a pressure gauge, a second experiment section, a third experiment section, a fourth experiment section and a second valve and is connected back to the water tank. The system has multiple controllable variables including the flow speed, the grain diameter, the grain concentration, the pH value and different channel structures and surface materials, can be used for researching the migration and the sedimentation of grains in a solid phase and a liquid phase and particularly researching the turbulent motion, the turbulent sedimentation and the like of specific grains on the surfaces of a specific flow field and a specific material and can realize relatively comprehensive and meticulous real-time dynamic observation and measurement to the movement of the grains through partially-visual experiment tube sections; meanwhile, the system is convenient to operate and has detachability.

Description

technical field [0001] The invention belongs to the technical field of multiphase flow measurement, in particular to an experimental system for measuring the migration and deposition of granular corrosion products in pipelines. Background technique [0002] In the long-term operation of nuclear power plants, granular corrosion products will be produced in the primary circuit system. The accumulation of a large number of such corrosion products is very detrimental to the operation, affecting the heat transfer of fuel elements and steam generators, and increasing the flow resistance of the coolant. More importantly, the corrosion products flowing or deposited in the core are irradiated by neutrons to form activated corrosion products, and these activated corrosion products are deposited on the surface of equipment outside the core, resulting in radioactive pollution and greatly increasing the Radiation intensity around equipment after shutdown. These granular corrosion produc...

Claims

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Application Information

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IPC IPC(8): G01N15/00G01N15/04G01N5/00
Inventor 陆道纲马忠英吴立村
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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