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Quantitative evaluation method for plate clogging of steam generators

一种矢量、隔板的技术，应用在隔板通道的堵塞评估领域，能够解决不能堵塞率正确估算等问题

Active Publication Date: 2018-12-21
ELECTRICITE DE FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, experience has shown that this is not the case, and thus the proposed method cannot correctly estimate the congestion rate

Method used

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  • Quantitative evaluation method for plate clogging of steam generators
  • Quantitative evaluation method for plate clogging of steam generators
  • Quantitative evaluation method for plate clogging of steam generators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] In a manner known to those skilled in the art, the method is started in the vicinity of the channel where at least one parameter depending on the clogging or the presence of magnetite is usually measured using a Foucault current probe, the measurement results of which show that the clogging, e.g. Impedance changes caused by iron ore.

[0063] Subsequently, at least one clogging index of the channel is deduced from the measurement result. The following description gives a non-limiting example of deriving such a congestion index.

[0064] After extracting the signal corresponding to the upstream side of the partition 10 being passed by the probe and the signal corresponding to the downstream side of the partition 10 being passed by the probe from the measurement signal, it is thus determined from the measurement signal that the downstream side of the partition 10 is passed by the probe. The probe passes through the corresponding lower edge signal, and the upstream edge o...

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PUM

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Abstract

The invention relates to a method for clogging assessment of passages (12a, 12b) of a partition (10) of a tubular heat exchanger (11) provided along the tube (11) for a fluid to pass through the partition (10), wherein, for each of the plurality of at least one channel (12a, 12b): - in the vicinity of the channel, at least one measurement of a parameter dependent on the presence of blockage or magnetite is achieved, - from this measurement extracting at least one congestion indicator for said channel, characterized in that by comparing the set of one or more congestion indicator vectors established on the basis of the congestion indicator thus obtained with the sets of congestion indicator vectors contained in the database To assess congestion, the sets of congestion indicator vectors are each associated with a congestion quantification descriptor.

Description

technical field [0001] The present invention generally relates to the field of tube inspection of a tube heat exchanger. More precisely, the present invention relates to a method for clogging assessment of the channels of the partitions of a tube heat exchanger, said channels being arranged along the tubes and used for the circulation of a fluid within said heat exchanger through said plates. [0002] A steam generator generally consists of a bundle of tubes within which a hot fluid circulates and around which the fluid to be heated circulates. For example, in the case of steam generators in REP type nuclear power plants, the steam generators are heat exchangers that use the primary loop energy from the nuclear response for converting the secondary loop water into steam that will feed the turbines and Electricity is thus produced. [0003] The steam generator, by using the heat of the primary water, changes the secondary fluid from liquid water to steam at the saturation lim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02G21C17/017
CPCG05B23/0221G21C17/017Y02E30/30F01K7/16G01N17/008G06F17/16G06F17/18
Inventor B·雷纳德N·保罗
Owner ELECTRICITE DE FRANCE