DEFINICION DE MANTENIMIENTO
May 22, 2019 | Author: felipearellano | Category: N/A
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DEFINICION DE MANTENIMIENTO PREDICTIVO PREDICTIV O (PDM) (PDM) El Mantenimiento Predictivo emplea varias tecnologías para determinar la condición del equipo o de los componentes mediante la medición y el análisis de la tendencia de parámetros físicos con el objeto de detectar, analizar y corregir problemas en los equipos antes de que se produzca prod uzca una falla. falla.
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DEFINICION DE MANTENIMIENTO PREDICTIVO PREDICTIV O (PDM) (PDM) SE TRATA DE UN SISTEMA DE ADVERTENCIA TEMPRANA QUE LE INDICA QUE ALGO MALO ESTA SUCEDIENDO EN EL EQUIPO, ANTES DE QUE USTED PUEDA OÍRLO, VERLO O SENTIRLO. POR LO GENERAL, UN PROBLEMA DETECTADO POR MEDIO DEL PDM SE PUEDE CORREGIR CON UN COSTO EQUIVALENTE A UN 1-10% DE LO QUE LE HUBIERA COSTADO REPARAR LA AVERÍA DE UN EQUIPO O UNA REPARACIÓN GLOBAL (CON SU CORRESPONDIENTE PERDIDA DE PRODUCCIÓN)
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ELEMENTOS DEL PDM (TECNOLOGIAS) MECANICOS A. EQUIPO O COMPONENTES
GIRATORIOS (MOTORES, BOMBAS, COMPONENTES, GENERADORES, VENTILADORES, TURBINAS, CAJAS DE ENGRANAJES, COJINES) LUBRICACION PARAMETROS DE MEDICION
-CORRIENTE DIELECTRICA -ANALISIS ESPECTOGRAFICO DE ACEITE -ANALISIS FERROGRAFICO
HERRAMIENTA O METODO
-SENSOR DE LUBRICACION -PROGRAMA DE VERIFICACION DE ACEITE
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FUERZAS PARAMETROS DE MEDICION
HERRAMIENTA O METODO
VIBRACION -Desequilibrio -Alineación SINERGIA DE IMPULSO -SOBRE COJINETE -DEFORMACION -TENSION -EMISION ACUSTICA
MEDIDOR DE VELOCIDAD DE VIBRACIONES ANALIZADOR ANALIZAD OR DE FRECUENCIAS MEDIDOR DE IMPULSO EXCITADOR MEDIDOR DE DEFORMACION PROBADOR DE TENSION DE CORREA EN V MEDIDOR DE EMPUJE INDICADOR DE CUADRANTE MAQUINA EQUILIBRADORA
B. EQUIPO O COMPONENTES FIJOS (EQUIPO DE PRODUCCION, MAQUINAS HERRAMIENTAS, CALDERAS, CAÑERÍAS, VALVULAS, INTERCAMBIADORES DE CALOR, TRAMPAS DE VAPOR, AISLACIONES)
CALOR
PARAMETROS DE HERRAMIENTAS HERRAMIEN TAS O METODO MEDICION TEMPERATURA TERMOMETRO PERDIDA TERMICA PIROMETRO CONDUCTIVIDAD CONTADORES DE SENSIBILIDAD TERMICA ESCAPES
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ESPESOR O DEFECTO PARAMETROS DE MEDICION DEFORMACION ESFUERZO IMPACTO VIBRACION PRESION VACIO
FUERZAS PARAMETROS DE MEDICION DEFORMACION ESFUERZO IMPACTO VIBRACION PRESION VACIO
HERRAMIENTAS HERRAMIEN TAS O METODO PROBADOR ULTRASONIDO DE ESPESOR RAYO SONICO ENSAYO CON TINTA PENETRANTE RAYOS X EMISION ACUSTICA MAGNAFLUX (Sistema de inspección Magnética) FLUJO ZI MEDIDOR DE ESPESOR DE PINTURA
HERRAMIENTAS HERRAMIENTA S O METODO MEDIDOR DE DEFORMACION PRUEBA DE PRESION MEDICION DE FRAGILIDAD DE ESFUERZO/REVESTIMIENTO PRUEBA HIDRAULICA ANALIZADOR DE VIBRACIONES PRUEBA DE VACIO
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2. ELECTRICOS A. EQUIPOS ELECTRICOS (Generadores, Motores, Transformadores, Capacitores, Disyuntores, Alimentadores de Energía-cables)
CABLES PARAMETROS DE MEDICION TEMPERATURA
HERRAMIENTAS O METODO EXPLORADOR INFRARROJO TERMOMETRO CONTADORES DE SENSIBILIDAD TERMICA TRAZADOR DE TEMPERATURA
CAPACITANCIA PARAMETROS DE MEDICION PERDIDA ACTUAL OXIDACION VOLTAJE
HERRAMIENTAS O METODO PRUEBA DE SOBREPOTENCIAL DE CC DOBLE PRUEBA ANALISIS DIELECTRICO DEL
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RESISTENCIA PARAMETROS DE MEDICION OHMS
HERRAMIENTAS O METODO .PRUEBA DE MEGGER .MEDIDOR DE PROTECCION ACCIDENTAL DE UN CONDUCTOR A TIERRA
VIBRACION PARAMETROS DE MEDICION VELOCIDAD ENERGIA DEL CHOQUE
HERRAMIENTAS O METODO MEDIDOR DE VELOCIDAD DE VIBRACIONES MEDIDOR DE IMPULSO
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EQUIPO DE CONTROL (Diapositivos de arranque del motor mot or,, Con Conmuta mutador dor,, Rel Reles) es) CALOR A.
PARAMETROS DE MEDICION TEMPERATURA
HERRAMIENTAS O METODO EXPLORADOR INFRARROJO
CAPACITANCIA PARAMETROS DE MEDICION PERDIDA DE CORRIENTE
HERRAMIENTAS O METODO PRUEBA DE CARGA DOBLE PRUEBA
RESISTENCIA PARAMETROS DE MEDICION
HERRAMIENTAS O METODO
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MONITOREO DEL ESTADO DE LOS EQUIPOS 1. ¿QUÉ MAQ MAQUIN UINAS AS DEBE DEBEN N INC INCLUIR LUIRSE SE EN EL MONITOREO DE ESTADO DE LOS EQUIPOS? EMPLEE UN METODO SIMILAR AL TRATADO EN LA SECCION DE PM: • IMPORTANCIA CRITICA: UN EQUIPO QUE SEA MUY IMPORTANTE PARA EL PROCESO, ES DECIR, UN EQUIPO CUYA FALLA PUDIERA OCASIONAR UNA GRAN PERDIDA ECONOMICA, CAUSAR LESIONES A LAS PERSONAS O IMPORTANTES DAÑOS AMBIENTALES. • ESTADO ACTUAL: ES MUCHO MAS PROBABLE QUE SE PRODUZCAN AVERIAS, CUYAS REPARACIONES SEAN COSTOSAS, EN UN EQUIPO VIEJO QUE SE ESTA DETERIORANDO
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2.
DECIDA, POR MONITOREAR
MAQUINA,
QUÉ
DESEA
• TEMPERATURA • VIBRACION • ESTADO DEL ACEITE • CARACTERISTICAS FUNCIONAMIENTO
ELECTRICAS
DE
• PRESION • FLUJO • TENSION Y ESFUERZO • MOVIMIENTO MECANICOS
Y
DESPLAZAMIENTO
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3.
EL MONITOREO DE UN SOLO FACTOR (POR EJEMPLO, UNICAMENTE DE LA VIBRACION), NO LE PERMITIRA CONTAR CON UN PANORAMA REAL NI COMPLETO DEL ESTADO DEL EQUIPO.
POR LO TANTO, DEBEN APLICARSE VARIOS CRITERIOS DIFERENTES (DOS COMO MINIMO Y PREFERIBLEMENTE DE TRES A CINCO)
EN LA MAYORIA DE LOS EQUIPOS DE PRODUCCION, ESTO SE TRADUCIRÍA EN LA REALIZACION DE: ANÁLISIS DE VIBRACIONES (COJINETES, MOTORES, CAJAS DE ENGRANAJES, VENTILADORES), MEDICION DE TEMPERATURA
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4. EXISTEN DOS TPOS BASICOS DE METODOS DE MONITOREO DE EQUIPOS (RECOPILACION DE DATOS): A. INSTALACION FIJA, CON SEGMENTOS ALAMBRICOS Y TELEINDICADORES, REGISTRADORES O MICROPROCESADORES (POR EJEMPLO, EN UNA SALA DE CONTROL). SE LO ENCUENTRA CON MAYOR FRECUENCIA EN INDUSTRIAS DE PROCESOS O EN AMBIENTES “DUROS”.
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1 LOS LOS DA DATO TOS S ME MEDI DIDO DOS S Y RE REGI GIST STRA RADO DOS S DEBEN ANALIZARSE, MARCAR SU TENDENCIA, INTERPRETARSE Y DEBEN TOMARSE DECISIONES (ACCIONES CORRECTIVAS, CUAN PRONTO DEBEN EFECTUARSE, O NINGUNA ACCION). ESTA ES LA ETAPA “DECISIVA” DEL PDM, TODA INFORMACION RECABADA QUE NO SE ANALICE NO TIENE NINGUN VALOR Y CONSTITUYE UNA PERDIDA DE TIEMPO. -ENTRADA DE DATOS, PROCESAMIENTO DE DATOS (MICROPROCESADORES, SOFTWARE)
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PREVENCION DE POSIBLES AVERIAS O REPARACIONES COSTOSAS DE LOS EQUIPOS SITUACION REAL: ¡EN MUCHAS EMPRESAS, MAS DEL 50% DE TODAS LAS AVERIAS DE LOS EQUIPOS SE DEBEN A FALLAS DE LOS MOTORES O DE LOS COJINETES! LA APLICACIÓN CORRECTA Y CONSTANTE DE PDM (¡Y DE PM! PUEDE VIRTUALMENTE ELIMINAR ESTE TIPO
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PREVENCION DE POSIBLES AVERIAS O REPARACIONES COSTOSAS DE LOS EQUIPOS UNA VEZ QUE CONOCE LOS MORIVOS QUE OCASIONARON LAS AVERIAS (PARETO, PRIMERAS 10, PERDIDA DE PRODUCCION, IMPACTO SOBRE LOS COSTOS), PUEDE DIRIGIR SUS ACTIVIDADES DE PDM A LA IDENTIFICACION DE LOS POSIBLES PROBLEMAS Y A EVITAR AVERIAS Y REPARACIONES COSTOSAS. APLIQUE LA REGLA 20/80, O SEA: SI DETECTA Y ELIMINA EL 20% DE LAS
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TECNICAS DE PDM, SU APLICACIÓN Y LOS EQUIPOS EMPLEADOS •ANALISIS DE VIBRACIONES/MONITOREO DE VIBRACIONES •METODO DE IMPULSO EXCITADOR •ANALISIS ESPECTROGRAFICO DE ACEITE •ANALISIS FERROGRAFICO DE PARTICULAS •INSPECCION INFRARROJA •ENSAYO ULTRASONICO
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1. ANALISIS VIBRACIONES/MONITOREO DE VIBRACIONES.
DE
HERRAMIENTAS : TRANSDUCTORES ACELEROMETRO, DETECTORES DE IMPULSOS, SONDAS ULTRASONICAS,
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1. METO METODO DO DE IMPUL IMPULSO SO EXCITA EXCITADOR: DOR: (VIBRACION) HERRAMIENTAS : TRANSDUCTORES ACELEROMETRO, DETECTORES DE IMPULSOS, SONDAS ULTRASONICAS, MEDIDORES DE VIBRACIONES, DETECTORES DE VIBRACIONES,
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IMPULSO EXCITADOR: LA VELOCIDAD DE VIBRACION DE LOS EQUIPOS ROTATIVOS ES UNA MEDIDA DE LA FUERZA EJERCIDA SOBRE LOS COJINETES. LAS FUERZAS ELEVADAS ARRUINAN RAPIDAMENTE LOS COJINETES, EL SIGUIENTE CUADRO EXPLICA EL CONCEPTO CON CLARIDAD:
VELOCIDAD ESTADO DE EQUIPO DE VIBRACION 0,15
BAJO NIVEL NIVEL DE FUERZA. LA VIDA UTIL
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3.
ANALISIS ESPECTROGRAF ESPECTROGRAFICO ICO DE ACEITE: HERRAMIENTAS: VISCOSIMETRO, MEDIDOR, ESPECTROMETRO, KIT DE PRUEBA DE LUBRICACION. ANALISIS DEL ESTADO DEL ACEITE Y DEL COMBUSTIBLE, VISCOSIDAD, CONTAMINACION, OXIDACION Y DETERMINACION DE LA
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6. ENSAYO ULTRASONICO: HERRAMIENTAS: EXPLORADOR ULTRASONICO, TRANSMISOR ULTRASONICO, AURICULAR ACUSTICO, REGISTRADORES. DETECTA Y MIDE NIVELES DE SONIDO Y SEÑALES ACUSTICAS CON EL OBJETO DE INSPECCIONAR COJINETES, DETECTAR PERDIDAS (DE GAS, AIRE, LIQUIDOS EN
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