<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532020000200148</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v87n213.81741</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Structure optimization design of high-temperature, high-pressure nuclear power valve]]></article-title>
<article-title xml:lang="es"><![CDATA[Optimización de la estructura de las válvulas nucleares de alta presión]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Wei]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Enda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chang]]></surname>
<given-names><![CDATA[Hao]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Jianrui]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[Chang]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[Xingyuan]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Jiangsu University  ]]></institution>
<addr-line><![CDATA[Zhenjiang ]]></addr-line>
<country>China</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Jiangsu University Institute of Fluid Engineering Equipment Technology ]]></institution>
<addr-line><![CDATA[Zhenjiang ]]></addr-line>
<country>China</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Institute of China Shipping Heavy Industry Group Co., Ltd  ]]></institution>
<addr-line><![CDATA[Kunming ]]></addr-line>
<country>China</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>87</volume>
<numero>213</numero>
<fpage>148</fpage>
<lpage>158</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532020000200148&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532020000200148&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532020000200148&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The nuclear power valve is an important piece of equipment in any nuclear power system. The finite element method was used in this study to analyze the strength and rigidity of the high-temperature and high-pressure nuclear gate valve. The structural characteristics were optimized as per the parameters that affect the strength of the valve body. Fluid-solid coupling technology was utilized to investigate the temperature, deformation, and stress distributions in the structure. A high stress concentration was observed in the initial design; the maximum equivalent stress exceeded the allowable range. Three optimization methods were deployed in efforts to improve the stress distribution. The stress distribution was found to be more uniform post-optimization and the gate valve structure of all three schemes tested met the relevant stress requirements. The optimal scheme was then determined by further comparison. The results presented here may provide a theoretical reference for the optimization of nuclear power valve designs.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La válvula de energía nuclear es un equipo importante en cualquier sistema de energía nuclear. El método de elementos finitos se utilizó en este estudio para analizar la resistencia y la rigidez de la válvula de compuerta nuclear de alta temperatura y alta presión. Las características estructurales se optimizaron según los parámetros que afectan la resistencia del cuerpo de la válvula. La tecnología de acoplamiento fluido-sólido se utilizó para investigar la temperatura, la deformación y las distribuciones de tensiones en la estructura. Se observó una alta concentración de tensiones en el diseño inicial; El esfuerzo equivalente máximo excedió el rango permitido. Se desplegaron tres métodos de optimización en un esfuerzo por mejorar la distribución del estrés. Se encontró que la distribución de la tensión era más uniforme después de la optimización y la estructura de la válvula de compuerta de los tres esquemas probados cumplía con los requisitos de tensión relevantes. El esquema óptimo se determinó luego mediante una comparación adicional. Los resultados presentados aquí pueden proporcionar una referencia teórica para la optimización de los diseños de válvulas de energía nuclear.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[high temperature]]></kwd>
<kwd lng="en"><![CDATA[high pressure]]></kwd>
<kwd lng="en"><![CDATA[valve]]></kwd>
<kwd lng="en"><![CDATA[structure optimization]]></kwd>
<kwd lng="en"><![CDATA[fluid-solid thermal coupling]]></kwd>
<kwd lng="es"><![CDATA[alta temperatura]]></kwd>
<kwd lng="es"><![CDATA[alta presión]]></kwd>
<kwd lng="es"><![CDATA[válvula]]></kwd>
<kwd lng="es"><![CDATA[optimización de estructura]]></kwd>
<kwd lng="es"><![CDATA[acoplamiento térmico fluido-sólido]]></kwd>
</kwd-group>
</article-meta>
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