TOP > 外国特許検索 > SCALE THICKNESS ESTIMATION SYSTEM, SCALE THICKNESS ESTIMATION METHOD, AND SCALE THICKNESS ESTIMATION PROGRAM

SCALE THICKNESS ESTIMATION SYSTEM, SCALE THICKNESS ESTIMATION METHOD, AND SCALE THICKNESS ESTIMATION PROGRAM NEW

外国特許コード F200010186
整理番号 S2020-0017-N0
掲載日 2020年7月28日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2019JP014750
国際公開番号 WO 2019202981
国際出願日 平成31年4月3日(2019.4.3)
国際公開日 令和元年10月24日(2019.10.24)
優先権データ
  • 特願2018-079246 (2018.4.17) JP
発明の名称 (英語) SCALE THICKNESS ESTIMATION SYSTEM, SCALE THICKNESS ESTIMATION METHOD, AND SCALE THICKNESS ESTIMATION PROGRAM NEW
発明の概要(英語) A scale thickness estimation system 1 according to an embodiment of the present invention comprises: a fluid temperature acquisition unit 151 for acquiring a temperature Tf of a fluid flowing through piping 100; a flow passage outer surface temperature acquisition unit 152 for acquiring a temperature To of the outer surface of the piping 100; a heat flux acquisition unit 153 for acquiring a heat flux qo in the outer surface of the piping 100; a flow passage wall thermal conductivity acquisition unit 154 for acquiring a flow passage wall thermal conductivity kw of the piping 100; a scale thermal conductivity acquisition unit 155 for acquiring a scale thermal conductivity ks of scale adhering to the inner surface of the piping 100; and a scale thickness estimation unit 156 for estimating the thickness of the scale on the basis of the temperature Tf of the fluid, the temperature To of the outer surface, the heat flux qo, the flow passage wall thermal conductivity kw, and the scale thermal conductivity ks.
従来技術、競合技術の概要(英語) BACKGROUND ART
Conventional, the inner surface of the fluid flow path to the known scale is attached. For example, hot water at a predetermined place in the power plant piping for guiding the cooling water pipe or the like for guiding the inner surface of the scale is attached. In addition, scale, and the like using a fluid heat exchanger can be adhered to the inner surface of the flow path are known.
In the present application, the scale is, the fluid contained in the material, was deposited on the inner surface of the flow path, or, in the precipitation from the fluid flow path generated by the inner surface of the means. For example, hot water flows through the scale is attached to the inner surface of the pipe, the fluid contained in the calcium carbonate or silica is deposited on the inner surface of the pipe has been generated by the metal oxide. In addition, the inner surface of the pipe to transport oil, wax, paraffin, hydrate, asphaltene or the like from adhering to the adhesion are known. Such attachment may also be included in the 'scale' refers to the present invention.
Scale with the growth of the flow path becomes narrow or in the pipe, the heat exchanger of the heat transfer performance due to a deterioration or the like. Therefore, the scale performs maintenance of the flow path needs to be removed. The removal of the scale, scale melting agent, or is cut off, is performed by a method such as by dividing the tapping. A method is adopted in any case, the flow of the fluid flow channel during maintenance is not possible. Therefore, the maintenance of the flow path is suppressed to minimum (removal of the scale operation) is desired.
In addition, the hardness of the scale is changed with time, increase the density is a certain time after deposition. Therefore, over time and is difficult to scale. Therefore, adhesion of scale in the flow path and recognize the situation, it is possible to perform maintenance at appropriate timing is desired.
Is Patent Document 1, the inner wall surface of a boiler furnace wall of a cooling pipe in order to estimate the amount of scaling of the scaling amount estimation system is described. For estimating the thickness of a scale, outside temperature and the cooling tube in the furnace and a relation between the temperature of the fins, the surface temperature of the metal of the heat exchanger tube a considerable heat transfer coefficient is obtained in advance the relationship between the necessary.
Is Patent Document 2, the scale of the plant components come into contact with the water vapor generation amount monitoring apparatus for monitoring the amount of the scale have been described. For estimating the thickness of the scale, scale growth rate needs to be determined in advance.
Is Patent Document 3, the measurement scale thickness of the inner surface of the described method. In this way, in the previously obtained by using a calibration curve. This calibration curve, and the scale thickness, and at a measurement point of the relationship between the temperature difference.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO UNIVERSITY OF MARINE SCIENCE AND TECHNOLOGY
  • 発明者(英語)
  • HAZUKU Tatsuya
  • MORITA Motoaki
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG

PAGE TOP

close
close
close
close
close
close