{"id":16657,"date":"2022-06-22T08:00:01","date_gmt":"2022-06-22T08:00:01","guid":{"rendered":"https:\/\/zecovalve.com\/?p=16657"},"modified":"2022-06-22T08:00:02","modified_gmt":"2022-06-22T08:00:02","slug":"analysis-and-solution-of-internal-leakage-of-electric-forged-steel-ball-valve","status":"publish","type":"post","link":"https:\/\/zecovalve.com\/pt\/analysis-and-solution-of-internal-leakage-of-electric-forged-steel-ball-valve.html","title":{"rendered":"An\u00e1lise e Solu\u00e7\u00e3o de Vazamento Interno de V\u00e1lvula Esfera El\u00e9trica de A\u00e7o Forjado"},"content":{"rendered":"<p>A v\u00e1lvula de esfera el\u00e9trica de a\u00e7o forjado tem sido cada vez mais amplamente utilizada em v\u00e1rios sistemas de controle industrial devido \u00e0 sua alta precis\u00e3o de controle e instala\u00e7\u00e3o e depura\u00e7\u00e3o convenientes. Por\u00e9m, no processo de utiliza\u00e7\u00e3o, tamb\u00e9m existem alguns problemas que atormentam o pessoal de instala\u00e7\u00e3o e depura\u00e7\u00e3o no local, ou seja, o problema de vazamento interno da v\u00e1lvula. Aqui discutiremos as causas comuns de vazamento interno e solu\u00e7\u00f5es de v\u00e1lvulas esfera el\u00e9tricas de a\u00e7o forjado, na esperan\u00e7a de ajudar o pessoal de manuten\u00e7\u00e3o no local da f\u00e1brica.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-the-inaccurate-zero-position-setting-of-the-electric-forged-steel-ball-valve-actuator\"><strong>\u2160. O ajuste impreciso da posi\u00e7\u00e3o zero do atuador el\u00e9trico da v\u00e1lvula esf\u00e9rica de a\u00e7o forjado<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">M\u00e9todo de ajuste:<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>1. Fechar manualmente a v\u00e1lvula (deve-se confirmar que est\u00e1 completamente fechada);<\/li><li>2. Fechar novamente a v\u00e1lvula manualmente com um pouco de for\u00e7a, conforme o caso;<\/li><li>3. Aperte novamente (no sentido da abertura da v\u00e1lvula) meia volta;<\/li><li>4. Em seguida ajuste o limite;<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2161. Sele\u00e7\u00e3o do modo de curso da v\u00e1lvula de esfera el\u00e9trica de a\u00e7o forjado<\/strong><\/h2>\n\n\n\n<p>A v\u00e1lvula \u00e9 aberta e fechada girando 90\u00b0. O torque do atuador n\u00e3o \u00e9 grande o suficiente, por isso \u00e9 f\u00e1cil alcan\u00e7ar a posi\u00e7\u00e3o totalmente fechada durante o comissionamento sem press\u00e3o. Quando h\u00e1 uma for\u00e7a rotativa, ela n\u00e3o consegue superar o impulso empurrado pelo l\u00edquido, portanto o fechamento n\u00e3o est\u00e1 no lugar.<\/p>\n\n\n\n<p>Solu\u00e7\u00e3o: Substitua o atuador por alto empuxo ou substitua-o por um carretel balanceado para reduzir a for\u00e7a desequilibrada do meio.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2162. Vazamento interno causado pela qualidade de fabrica\u00e7\u00e3o da v\u00e1lvula esf\u00e9rica el\u00e9trica de a\u00e7o forjado<\/strong><\/h2>\n\n\n\n<p>Os fabricantes de v\u00e1lvulas de a\u00e7o forjado n\u00e3o controlam estritamente o material da v\u00e1lvula, a tecnologia de processamento, a tecnologia de montagem, etc. no processo de produ\u00e7\u00e3o, resultando em retifica\u00e7\u00e3o n\u00e3o qualificada da superf\u00edcie de veda\u00e7\u00e3o, e os produtos com defeitos como corros\u00e3o e tracoma n\u00e3o s\u00e3o completamente eliminados, resultando no el\u00e9trico v\u00e1lvula de esfera de a\u00e7o forjado. vazar.<\/p>\n\n\n\n<p>Solu\u00e7\u00e3o: Retrabalhar a superf\u00edcie de veda\u00e7\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2163. A parte de controle da v\u00e1lvula de esfera el\u00e9trica de a\u00e7o forjado afeta o vazamento interno da v\u00e1lvula<\/strong><\/h2>\n\n\n\n<p>O m\u00e9todo de controle tradicional da v\u00e1lvula de esfera el\u00e9trica de a\u00e7o forjado \u00e9 atrav\u00e9s da chave limitadora da v\u00e1lvula, chave de torque excessivo e outros m\u00e9todos de controle mec\u00e2nico. Como esses componentes de controle s\u00e3o afetados pela temperatura ambiente, press\u00e3o e umidade, isso causar\u00e1 imprecis\u00e3o no posicionamento da v\u00e1lvula, fadiga da mola, irregularidade do coeficiente de expans\u00e3o t\u00e9rmica e outros fatores objetivos, causando vazamento interno da v\u00e1lvula de esfera el\u00e9trica de a\u00e7o forjado.<\/p>\n\n\n\n<p>Solu\u00e7\u00e3o: Reajuste o limite.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u2164. Vazamento interno causado por problemas de depura\u00e7\u00e3o da v\u00e1lvula de esfera el\u00e9trica de a\u00e7o forjado<\/strong><\/h2>\n\n\n\n<p>Afetada pelo processo de processamento e montagem, a v\u00e1lvula esf\u00e9rica el\u00e9trica de a\u00e7o forjado geralmente apresenta o fen\u00f4meno de que a v\u00e1lvula esf\u00e9rica el\u00e9trica de a\u00e7o forjado n\u00e3o pode ser aberta eletricamente ap\u00f3s ser fechada manualmente. Se o curso da v\u00e1lvula de controle el\u00e9trico for ajustado para menor pela posi\u00e7\u00e3o de a\u00e7\u00e3o dos interruptores de limite superior e inferior, a v\u00e1lvula de controle el\u00e9trico n\u00e3o ser\u00e1 fechada hermeticamente ou a v\u00e1lvula n\u00e3o ser\u00e1 aberta. Ajustar o curso da v\u00e1lvula de esfera el\u00e9trica de a\u00e7o forjado para maior causar\u00e1 a a\u00e7\u00e3o de prote\u00e7\u00e3o do interruptor de torque excessivo. Se o valor de a\u00e7\u00e3o da chave de excesso de torque for ajustado para ser maior, ocorrer\u00e3o acidentes como bater no mecanismo de transmiss\u00e3o de desacelera\u00e7\u00e3o ou bater na v\u00e1lvula, ou at\u00e9 mesmo queimar o motor.<\/p>\n\n\n\n<p>Para resolver este problema, voc\u00ea pode agitar manualmente a v\u00e1lvula de controle el\u00e9trico at\u00e9 o fim ao depurar a v\u00e1lvula de controle el\u00e9trico, depois agit\u00e1-la para a posi\u00e7\u00e3o do interruptor de limite inferior da porta el\u00e9trica fixa na dire\u00e7\u00e3o de abertura e, em seguida, abrir a forjada el\u00e9trica v\u00e1lvula de esfera de a\u00e7o para a posi\u00e7\u00e3o totalmente aberta para definir a localiza\u00e7\u00e3o do interruptor de limite superior. Desta forma, a v\u00e1lvula esf\u00e9rica el\u00e9trica de a\u00e7o forjado n\u00e3o ter\u00e1 o fen\u00f4meno de que a v\u00e1lvula esf\u00e9rica el\u00e9trica de a\u00e7o forjado n\u00e3o pode ser aberta pela energia el\u00e9trica ap\u00f3s ser fechada manualmente, de modo que a v\u00e1lvula esf\u00e9rica el\u00e9trica de a\u00e7o forjado possa ser aberta e fechada livremente, mas isso far\u00e1 com que a v\u00e1lvula de esfera el\u00e9trica de a\u00e7o forjado vaze.<\/p>\n\n\n\n<p>Como a posi\u00e7\u00e3o de a\u00e7\u00e3o da chave limitadora \u00e9 relativamente fixa, a eros\u00e3o cont\u00ednua e o desgaste da v\u00e1lvula pelo meio controlado pela v\u00e1lvula durante a opera\u00e7\u00e3o tamb\u00e9m causar\u00e3o vazamento interno causado pelo fechamento frouxo da v\u00e1lvula, mesmo se a v\u00e1lvula de controle el\u00e9trico for ajustada idealmente.<\/p>\n\n\n\n<p>Solu\u00e7\u00e3o: Reajuste o limite.<\/p>\n\n\n\n<!-- Andy:h-related-tags -->\n<h2 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