{"id":268,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/thermal-bow\/"},"modified":"2026-05-23T23:06:51","modified_gmt":"2026-05-23T23:06:51","slug":"thermal-bow","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/sl\/glossary\/thermal-bow\/","title":{"rendered":"Kaj je termi\u010dni lok? Temperaturno povzro\u010deno upogibanje gredi"},"content":{"rendered":"<h1>Razumevanje termi\u010dnega loka v rotacijskih strojih<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/balanset-1\/\" title=\"Prenosni balanser in analizator vibracij Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Prenosni uravnote\u017enik in analizator vibracij Balanset-1A v popolnem kompletu\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/sl\/product-category\/devices\/\" rel=\"tag\">Naprave<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/sl\/product\/balanset-1\/\" title=\"Prenosni balanser in analizator vibracij Balanset-1A\">Prenosni balanser in analizator vibracij Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + DDV (\u010de je primerno)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Dodaj v ko\u0161arico: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/vibration-sensor\/\" title=\"Senzor vibracij\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Senzor vibracij Balanset-1A od blizu\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/sl\/product\/vibration-sensor\/\" title=\"Senzor vibracij\">Senzor vibracij<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + DDV (\u010de je primerno)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Dodaj v ko\u0161arico: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dni senzor (laserski tahometer)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Opti\u010dni senzor (laserski tahometer)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/sl\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Opti\u010dni senzor (laserski tahometer)\">Opti\u010dni senzor (laserski tahometer)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + DDV (\u010de je primerno)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Dodaj v ko\u0161arico: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Komplet za uravnote\u017eenje rotorjev Vibromera: torba za prena\u0161anje, ve\u010dkanalni pretvornik signala, ro\u010dni analizator, magnetna podlaga, senzorji vibracij in spiralni kabli.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/sl\/product-category\/devices\/\" rel=\"tag\">Naprave<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/sl\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + DDV (\u010de je primerno)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Dodaj v ko\u0161arico: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/sl\/product\/magnet-stand\/\" title=\"Magnetno stojalo Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Magnetna osnova.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/sl\/product-category\/parts\/\" rel=\"tag\">Deli<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/sl\/product\/magnet-stand\/\" title=\"Magnetno stojalo Insize-60-kgf\">Magnetno stojalo Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + DDV (\u010de je primerno)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" 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title=\"Dinami\u010dni uravnote\u017eevalnik &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Vsebina kompleta Balanset-1A z vmesni\u0161ko enoto, senzorji, tahometrom in dodatno opremo\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, 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100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/sl\/product-category\/devices\/\" rel=\"tag\">Naprave<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/sl\/product\/dynamic-balancer-balanset-1a\/\" title=\"Dinami\u010dni uravnote\u017eevalnik &quot;Balanset-1A&quot; OEM\">Dinami\u010dni uravnote\u017eevalnik \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + DDV (\u010de je primerno)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Dodaj v ko\u0161arico\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Dodaj v ko\u0161arico\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/sl\/wp-json\/wp\/v2\/glossary\/268?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Dodaj v ko\u0161arico: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d je bil dodan v va\u0161o ko\u0161arico\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Dodaj v ko\u0161arico<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Termi\u010dni lok<\/strong> (imenovan tudi vro\u010di lok, toplotno upogibanje ali temperaturno povzro\u010den lok gredi) je za\u010dasna ukrivljenost, ki se razvije v <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/rotor\/\">rotor<\/a> gredi, ko temperatura ni enakomerna po njenem obodu. Ko je ena stran gredi bolj vro\u010da kot nasprotna stran, se vro\u010da stran bolj razpne, se podalj\u0161a in prisili gred v lok s toplo stranjo na konveksni (zunanji) strani krivine. Za razliko od trajne <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/shaft-bow\/\">gredni lok<\/a> ki nastane po mehanskih po\u0161kodbah, je termi\u010dni upogib reverzibilen: izzveni, ko se gred vrne na enakomerno temperaturo. Kljub temu lahko povzro\u010di hude <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/vibration\/\">vibracije<\/a> med segrevanjem in ohlajanjem, in \u010de je huda ali se nenehno ponavlja, lahko za seboj pusti trajne po\u0161kodbe.<\/p>\n<h2>1. Opredelitev: Kaj je toplotni lok<\/h2>\n<p>Toplotni lok je najla\u017eje razumeti kot prehodno geometrijsko napako. Gred se ni poru\u0161ila in z njeno porazdelitvijo mas ni ni\u010d narobe; preprosto se v realnem \u010dasu upogiba zaradi temperaturnega gradienta \u010dez njen premer. Ker je upogib geometrijski in se vrti skupaj z gredjo, nastala vibracija le\u017ei pri <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/running-speed\/\">obratovalna hitrost<\/a> in je na spektru videti skoraj povsem kot <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/unbalance\/\">neuravnote\u017eenost<\/a>. Klju\u010dna razlika je, da toplotni lok nastaja in izginja s temperaturo, medtem ko je neuravnote\u017eenost stalna. Ta edini vedenjski namig \u2014 vibracija, ki sledi termi\u010dnemu stanju stroja in ne njegovi hitrosti \u2014 je nit, ki razplete celotno diagnozo.<\/p>\n<h2>2. Fizi\u010dni mehanizem<\/h2>\n<h3>2.1 Diferencialna termi\u010dna ekspanzija<\/h3>\n<p>Fizika termi\u010dnega loka je preprosta:<\/p>\n<ul>\n<li>Kovina se med segrevanjem razteza (koeficient toplotnega raztezanja je za jeklo obi\u010dajno 10\u201315 \u00b5m\/m\/\u00b0C).<\/li>\n<li>\u010ce je temperatura po obodu enakomerna, je raztezanje simetri\u010dno \u2014 gred se preprosto podalj\u0161a, vendar ostane ravna.<\/li>\n<li>\u010ce je ena stran bolj vro\u010da, se ta stran bolj raz\u0161iri kot hladna stran<\/li>\n<li>Diferencialno raztezanje povzro\u010di ukrivljenost.<\/li>\n<li>Velikost loka je sorazmerna tako s temperaturno razliko kot z dol\u017eino gredi.<\/li>\n<\/ul>\n<p>Isti koeficient, ki uravnava ta gradient, poganja tudi aksialno rast in spremembe ujemov, ki jih in\u017eenirji ra\u010dunajo drugje; osnovna aritmetika je enaka tisti v <a href=\"https:\/\/vibromera.eu\/sl\/calculators\/thermal-expansion-calculator\/\">Kalkulator toplotnega raztezanja<\/a>, uporabljena \u010dez premer namesto vzdol\u017e dol\u017eine.<\/p>\n<h3>2.2 Tipi\u010dne temperaturne razlike<\/h3>\n<ul>\n<li>Temperaturna razlika 10\u201320\u00b0C \u010dez premer lahko ustvari merljiv lok.<\/li>\n<li>V velikih turbinah lahko razlika 30\u201350\u00b0C povzro\u010di hude vibracije.<\/li>\n<li>U\u010dinek se kopi\u010di vzdol\u017e dol\u017eine gredi, zato so dalj\u0161e gredi inherentno bolj dovzetne.<\/li>\n<\/ul>\n<h2>3. Pogosti vzroki toplotnega loka<\/h2>\n<h3>3.1 Pogoji zagona (najbolj pogosti)<\/h3>\n<ul>\n<li><strong>Asimetri\u010dno segrevanje:<\/strong> vro\u010da para, plin ali procesna teko\u010dina se dotika zgornjega dela gredi, medtem ko spodnji del ostaja hladnej\u0161i.<\/li>\n<li><strong>Sevalno segrevanje:<\/strong> toplota iz vro\u010dih ohi\u0161ij ali cevovodov segreva zgornji del gredi.<\/li>\n<li><strong>Trenje v le\u017eajih:<\/strong> en le\u017eaj, ki se vrti pri vi\u0161ji temperaturi kot drugi, segreva lokalni odsek gredi.<\/li>\n<li><strong>Hiter zagon:<\/strong> nezadostni \u010das ogrevanja dopu\u0161\u010da, da se toplotni gradienti razvijejo, preden se lahko izena\u010dijo.<\/li>\n<\/ul>\n<h3>3.2 Pogoji zaustavitve (termi\u010dni ugib)<\/h3>\n<ul>\n<li><strong>Vro\u010d izklop:<\/strong> gred se preneha vrteti, ko je \u0161e vedno vro\u010da.<\/li>\n<li><strong>Gravitacijski ugib:<\/strong> toplota se dviga, zato se zgornja stran vodoravne gredi ohlaja hitreje kot spodnja.<\/li>\n<li><strong>Termi\u010dni ugib loka:<\/strong> spodnji del ostane dlje \u010dasa toplej\u0161i, zato se gred ukrivi navzdol.<\/li>\n<li><strong>Kriti\u010dno obdobje:<\/strong> prve ure po zaustavitvi.<\/li>\n<\/ul>\n<h3>3.3 Operativni vzroki<\/h3>\n<ul>\n<li><strong>Trenje med rotorjem in statorjem:<\/strong> trenje pri stiku povzro\u010da intenzivno lokalno segrevanje \u2014 samookrepljujo\u010d mehanizem, opisan v razdelku <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/rotor-rub\/\">drgnjenje rotorja<\/a>.<\/li>\n<li><strong>Neenakomerno hlajenje:<\/strong> asimetri\u010dni tok hladilnega zraka ali pr\u0161enje vode.<\/li>\n<li><strong>Son\u010dno segrevanje:<\/strong> zunanja oprema z izpostavljenostjo soncu na eni strani.<\/li>\n<li><strong>Motnje procesa:<\/strong> nenadne spremembe temperature delovnega fluida.<\/li>\n<\/ul>\n<p>Primer drsnega stika zahteva posebno previdnost. Rahel stik segreje eno to\u010dko, kar ukrivi gred, ki to to\u010dko \u0161e mo\u010dneje pritisne ob tesnilo, ki se zato \u0161e bolj segreje \u2014 samovzpodbujajo\u010da povratna zanka (v\u010dasih imenovana Newkirckov u\u010dinek), ki lahko \u017ee manj\u0161i stik v nekaj minutah stopnjuje do hude vibracije.<\/p>\n<h2>4. Simptomi in zaznavanje<\/h2>\n<h3>4.1 Zna\u010dilnosti vibracij<\/h3>\n<p>Toplotna ukrivitev gredi povzro\u010da zna\u010dilno skupino simptomov:<\/p>\n<ul>\n<li><strong>Pogostost:<\/strong> 1\u00d7 vrtljaja \u2014 klasi\u010dna <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/synchronous-vibration\/\">sinhrone vibracije<\/a>.<\/li>\n<li><strong>\u010casovna usklajenost:<\/strong> visoka med ogrevanjem, upada, ko se dose\u017ee toplotno ravnovesje.<\/li>\n<li><strong>Fazne spremembe:<\/strong> . <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/phase-angle\/\">fazni kot<\/a> se premika, ko se ukrivitev razvija in nato odpravi.<\/li>\n<li><strong>Vibraclje pri po\u010dasnem vrtenju:<\/strong> visoke vibracije tudi pri zelo majhnih hitrostih, za razliko od <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/unbalance\/\">neuravnote\u017eenost<\/a>.<\/li>\n<li><strong>Videz:<\/strong> izgleda kot neuravnote\u017eenost, toda je odvisna od temperature.<\/li>\n<\/ul>\n<h3>4.2 Razlikovanje toplotne ukrivitve gredi od neuravnote\u017eenosti<\/h3>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Zna\u010dilnost<\/th>\n<th>Neuravnote\u017eenost<\/th>\n<th>Termi\u010dni lok<\/th>\n<\/tr>\n<tr>\n<td>Frekvenca<\/td>\n<td>1\u00d7 hitrost teka<\/td>\n<td>1\u00d7 hitrost teka<\/td>\n<\/tr>\n<tr>\n<td>Temperaturna ob\u010dutljivost<\/td>\n<td>Relativno stabilno<\/td>\n<td>Visoka med ogrevanjem\/ohlajanjem<\/td>\n<\/tr>\n<tr>\n<td>Po\u010dasno vrtenje (50\u2013200 RPM)<\/td>\n<td>Zelo nizka amplituda<\/td>\n<td>Visoka amplituda<\/td>\n<\/tr>\n<tr>\n<td>Faza v primerjavi s temperaturo<\/td>\n<td>Konstanta<\/td>\n<td>Spremembe, ko se lok razvija<\/td>\n<\/tr>\n<tr>\n<td>Vztrajnost<\/td>\n<td>Ves \u010das konstantno<\/td>\n<td>Za\u010dasno, izzveni pri termi\u010dnem ravnovesju<\/td>\n<\/tr>\n<tr>\n<td>Odgovor na uravnote\u017eenje<\/td>\n<td>Zmanj\u0161ane vibracije<\/td>\n<td>Minimalno ali brez izbolj\u0161anja<\/td>\n<\/tr>\n<\/table>\n<p>Risanje amplitude in faze v odvisnosti od \u010dasa \u2014 ali od temperature le\u017eaja \u2014 te vrstice tabele spremeni v nedvoumno sliko: vektor, ki se med segrevanjem rotorja premika in se nato ustali, pomeni toplotno ukrivitev gredi, medtem ko vektor, ki miruje, pomeni neuravnote\u017eenost. A <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/polar-plot\/\">polarni diagram<\/a> zaznane med <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/startup-vibration\/\">zagon<\/a> prika\u017ee to premikanje na prvi pogled.<\/p>\n<h3>4.3 Diagnosti\u010dni testi<\/h3>\n<h4>4.3.1 Test vibracij pri po\u010dasnem vrtenju<\/h4>\n<ul>\n<li>Zavrtite gred pri 5\u201310 % obratovalne hitrosti.<\/li>\n<li>Izmerite vibracije in <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/run-out\/\">iztek<\/a>.<\/li>\n<li>Visoke vibracije pri po\u010dasnem vrtenju ka\u017eejo na toplotno ali mehansko ukrivljenost gredi, ne na neuravnote\u017eenost, katere sila je pri tako nizkih hitrostih zanemarljiva.<\/li>\n<\/ul>\n<h4>4.3.2 Nadzor temperature<\/h4>\n<ul>\n<li>Med zagonom spremljajte temperaturo gredi ali le\u017eajev, po mo\u017enosti z namenskim <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/temperature-sensor\/\">temperaturni senzor<\/a> na ve\u010d to\u010dkah.<\/li>\n<li>Izmerite temperaturo na ve\u010d mestih po obodu le\u017eaja<\/li>\n<li>Koreliranje sprememb vibracij z izmerjenimi temperaturnimi gradienti.<\/li>\n<\/ul>\n<h4>4.3.3 Spremljanje vibracij ob zagonu<\/h4>\n<ul>\n<li>Nari\u0161ite amplitudo vibracij v odvisnosti od \u010dasa med ogrevanjem.<\/li>\n<li>Toplotna ukrivljenost: sprva visoka, nato upada, ko se vzpostavi ravnovesje.<\/li>\n<li>Neuravnote\u017eenost: nara\u0161\u010da s hitrostjo in je neodvisna od temperature.<\/li>\n<\/ul>\n<h2>5. Strategije prepre\u010devanja<\/h2>\n<h3>5.1 Operativni postopki<\/h3>\n<h4>5.1.1 Pravilni postopki ogrevanja<\/h4>\n<ul>\n<li><strong>Stopnjevalno pove\u010danje temperature:<\/strong> pustite, da se gred enakomerno segreje.<\/li>\n<li><strong>Podalj\u0161an \u010das ogrevanja:<\/strong> velike turbine morda potrebujejo 2\u20134 ure.<\/li>\n<li><strong>Spremljanje temperature:<\/strong> sledite temperaturi le\u017eajev in ohi\u0161ja.<\/li>\n<li><strong>Spremljanje vibracij:<\/strong> med ogrevanjem opazujte vibracije in odlo\u017eite morebitno pove\u010danje hitrosti, \u010de so visoke.<\/li>\n<\/ul>\n<h4>5.1.2 Delovanje po\u010dasnega pogona (turning gear)<\/h4>\n<ul>\n<li>Pri velikih turbinah med ogrevanjem in ohlajanjem vklopite po\u010dasni pogon (turning gear) (po\u010dasno vrtenje, okrog 3\u201310 rpm).<\/li>\n<li>Neprekinjeno vrtenje prepre\u010duje toplotno ukrivljenost z enakomerno porazdelitvijo toplote po celotnem obodu.<\/li>\n<li>To je standardna industrijska praksa za parne turbine nad 50 MW.<\/li>\n<li>Po\u010dasni pogon lahko med ohlajanjem deluje 8\u201324 ur.<\/li>\n<\/ul>\n<h4>5.1.3 Postopki zaustavitve<\/h4>\n<ul>\n<li><strong>Postopno ohlajanje:<\/strong> Pred izklopom po\u010dasi zmanj\u0161ujte obremenitev in temperaturo<\/li>\n<li><strong>Podalj\u0161ano delovanje po\u010dasnega pogona:<\/strong> med ohlajanjem ohranite vrtenje rotorja.<\/li>\n<li><strong>Izogibajte se hladnim zaustavitvam:<\/strong> Zasilne zaustavitve pu\u0161\u010dajo gred vro\u010do in nagnjeno k upogibanju<\/li>\n<\/ul>\n<h3>5.2 Konstruktivni ukrepi<\/h3>\n<ul>\n<li><strong>Toplotna izolacija:<\/strong> izolirajte ohi\u0161ja za vzdr\u017eevanje enakomerne temperature.<\/li>\n<li><strong>Ogrevalne obloge:<\/strong> zunanji grelci za enakomerno predhodno ogrevanje.<\/li>\n<li><strong>Drena\u017ea:<\/strong> prepre\u010diti nabiranje vro\u010de kondenzate na dnu gredi.<\/li>\n<li><strong>Prezra\u010devanje:<\/strong> zagotoviti simetri\u010dni pretok hladilnega zraka.<\/li>\n<\/ul>\n<h2>6. Posledice termi\u010dnega upogiba<\/h2>\n<h3>6.1 Neposredni u\u010dinki<\/h3>\n<ul>\n<li><strong>Visoke vibracije:<\/strong> med ogrevanjem lahko dose\u017ee 5\u201310-kratno normalno raven in se dramati\u010dno oja\u010da, \u010de upogib prisili rotor skozi <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/critical-speed\/\">kriti\u010dna hitrost<\/a>.<\/li>\n<li><strong>Obremenitev le\u017eajev:<\/strong> asimetri\u010dni upogib pove\u010da obremenitve le\u017eajev.<\/li>\n<li><strong>Drgnjenje tesnil:<\/strong> Upogib gredi lahko povzro\u010di stik s tesnili ali stacionarnimi deli<\/li>\n<li><strong>Zamude pri zagonu:<\/strong> posadka mora po\u010dakati, da se vibracije umirijo, preden pove\u010da hitrost.<\/li>\n<\/ul>\n<h3>6.2 Dolgoro\u010dne po\u0161kodbe<\/h3>\n<ul>\n<li><strong>Obraba le\u017eajev:<\/strong> ponavljajo\u010da se visoka vibracijska pospe\u0161itev pospe\u0161uje <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/bearing-wear\/\">obraba le\u017eaja<\/a>.<\/li>\n<li><strong>Po\u0161kodba tesnila:<\/strong> ponavljajo\u010de se drgnjene uni\u010dijo komponente tesnila.<\/li>\n<li><strong>Utrujenost:<\/strong> cikli\u010dna napetost upogibanja pri vsakem zagonu prispeva k <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/fatigue\/\">utrujenost<\/a> skozi \u017eivljenjsko dobo rotorja.<\/li>\n<li><strong>Trajna deformacija:<\/strong> hud ali ponavljajo\u010di se termi\u010dni upogib lahko s\u010dasoma povzro\u010di trajno plasti\u010dno deformacijo \u2014 pri kateri to\u010dki je reverzibilna napaka postala trajna <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/shaft-bow\/\">gredni lok<\/a>.<\/li>\n<\/ul>\n<h2>7. Odprava in bla\u017eitev<\/h2>\n<h3>7.1 Za aktiven termi\u010dni upogib<\/h3>\n<ul>\n<li><strong>Pustite si \u010das:<\/strong> Preden pove\u010date hitrost, po\u010dakajte na toplotno ravnovesje<\/li>\n<li><strong>Po\u010dasno vrtenje:<\/strong> po\u010dasi vrteti, da se toplota po mo\u017enosti enakomerno porazdeli.<\/li>\n<li><strong>Ne posku\u0161ajte uravnote\u017eiti:<\/strong> <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/uravnotezenje\/\">uravnote\u017eenje<\/a> termi\u010dnega upogiba ni mogo\u010de odpraviti z uravnote\u017eenjem in ta ne bo u\u010dinkovito.<\/li>\n<li><strong>Odpravite vir toplote:<\/strong> identificirati in odpraviti asimetri\u010dno segrevanje.<\/li>\n<\/ul>\n<h3>7.2 Za termi\u010dni upogib zaradi posedanja (po zaustavitvi)<\/h3>\n<ul>\n<li><strong>Vrtilna naprava:<\/strong> med ohlajanjem ohranjajte rotor v po\u010dasnem vrtenju.<\/li>\n<li><strong>Podalj\u0161an \u010das vrtenja:<\/strong> Morda bo potrebnih 12\u201324 ur delovanja po\u010dasnega pogona (turning gear).<\/li>\n<li><strong>Spremljanje temperature:<\/strong> nadaljujte, dokler temperatura gredi ni enakomerna.<\/li>\n<li><strong>Zamaknjen ponovni zagon:<\/strong> \u010ce se je razvil lok, po\u010dakajte, da se naravno zravna, preden ponovno za\u010dnete<\/li>\n<\/ul>\n<h2>8. Razmisleki, specifi\u010dni za industrijo<\/h2>\n<h3>8.1 Parni turbini<\/h3>\n<ul>\n<li>Najbolj ob\u010dutljivi stroji zaradi visokih temperatur in masivnih rotorjev.<\/li>\n<li>Podrobni postopki segrevanja in ohlajanja so standardna praksa.<\/li>\n<li>Po\u010dasni pogon (turning gear) je obvezen za enote z mo\u010djo nad 50 MW.<\/li>\n<li>Morda bodo potrebovale 2\u20134 ure segrevanja in 12\u201324 ur ohlajanja na po\u010dasnem pogonu.<\/li>\n<\/ul>\n<h3>8.2 Plinsko-turbinski sistemi<\/h3>\n<ul>\n<li>Hitrej\u0161i toplotni odziv zaradi manj\u0161e mase rotorja.<\/li>\n<li>Toplotni uklon pri zagonu je manj pogost, a \u0161e vedno mo\u017een.<\/li>\n<li>Segrevanje na strani zgorevanja lahko povzro\u010di obodne asimetrije.<\/li>\n<li>Cikli segrevanja so praviloma hitrej\u0161i kot pri parnih turbinah.<\/li>\n<\/ul>\n<h3>8.3 Veliki elektromotorji in generatorji<\/h3>\n<ul>\n<li>Toplotni uklon lahko nastane zaradi segrevanja rotorskega navitja ali trenja v le\u017eajih.<\/li>\n<li>Zunanja namestitev je izpostavljena son\u010dnemu segrevanju na eni strani.<\/li>\n<li>Po\u010dasno vrtenje pred zagonom ali ogrevanje je lahko potrebno.<\/li>\n<\/ul>\n<h2>9. Nadzor in alarmiranje<\/h2>\n<h3>9.1 Klju\u010dni parametri nadzora<\/h3>\n<ul>\n<li><strong>Vibraclje pri po\u010dasnem vrtenju:<\/strong> meriti pri nizki hitrosti pred normalnim zagonom.<\/li>\n<li><strong>Temperaturna razlika le\u017eajev:<\/strong> primerjati temperature zgoraj in spodaj.<\/li>\n<li><strong>Vibracijska amplituda glede na temperaturo:<\/strong> nari\u0161ite amplitudo glede na temperaturo le\u017eaja.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/phase\/\">Fazni kot<\/a>:<\/strong> sledite faznim spremembam, ki nakazujejo nastajajo\u010di uklon.<\/li>\n<\/ul>\n<h3>9.2 Alarmna merila<\/h3>\n<ul>\n<li>Vibracijska amplituda pri po\u010dasnem vrtenju, ve\u010dja od 2\u00d7 osnovne vrednosti, spro\u017ei alarm.<\/li>\n<li>Temperaturna razlika nad 15\u201320\u00b0C ka\u017ee na toplotno neravnovesje.<\/li>\n<li>Hitre fazne spremembe (ve\u010d kot 30\u00b0 v 10 minutah) ka\u017eejo na nastajajo\u010di uklon.<\/li>\n<li>Vibracije se med ogrevanjem pove\u010dujejo, namesto da bi se zmanj\u0161evale<\/li>\n<\/ul>\n<p>Ta merila se naravno ujemajo s \u0161ir\u0161im <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/condition-monitoring\/\">spremljanje stanja<\/a> programa, kjer se zajemajo podatki med zagonom in zaustavljanjem kot <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/transient-vibration\/\">prehodne vibracije<\/a> zapise namesto fotografij v posebnem trenutku.<\/p>\n<h2>10. Napredne strategije zagona<\/h2>\n<h3>10.1 Nadzorovano pospe\u0161evanje<\/h3>\n<ol>\n<li><strong>Po\u010dasen po\u010deti zagon:<\/strong> preverite sprejemljivo vibracijo pri 100\u2013200 vrt.\/min.<\/li>\n<li><strong>Postopno pospe\u0161evanje:<\/strong> postopoma pove\u010dujte hitrost do vmesnih vrednosti (na primer 30 %, 50 %, 70 % normalne) z zadr\u017eevanji.<\/li>\n<li><strong>Obdobja toplotne aklimatizacije:<\/strong> na vsaki stopnji vzdr\u017eujte konstantno hitrost 15\u201330 minut.<\/li>\n<li><strong>Preverjanje vibracij:<\/strong> pred nadaljevanjem potrdite, da vibracija na vsaki stopnji upada.<\/li>\n<li><strong>Spremljanje temperature:<\/strong> zagotovite, da se toplotni gradienti skozi celoten proces zmanj\u0161ujejo.<\/li>\n<\/ol>\n<h3>10.2 Avtomatizirani sistemi zagona<\/h3>\n<p>Sodobni krmilni sistemi lahko avtomatizirajo upravljanje termi\u010dnega loka:<\/p>\n<ul>\n<li>Programabilna zaporedja ogrevanja.<\/li>\n<li>Samodejna obdobja zadr\u017eevanja, \u010de so prese\u017eene omejitve vibracij ali temperature<\/li>\n<li>Izra\u010dun velikosti upogiba v realnem \u010dasu na podlagi vibracij in temperature.<\/li>\n<li>Prilagodljivi profili hitrosti na podlagi izmerjenih pogojev<\/li>\n<\/ul>\n<h2>11. Razmerje do drugih pojavov<\/h2>\n<h3>11.1 Toplotni upogib v primerjavi s trajnim upogibom<\/h3>\n<ul>\n<li><strong>Toplotni lok:<\/strong> za\u010dasen, izgine pri toplotnem ravnote\u017eju.<\/li>\n<li><strong>Trajni upogib:<\/strong> plasti\u010dna deformacija, ki ostane tudi ko je gred hladna.<\/li>\n<li><strong>Tveganje:<\/strong> hudi, ponavljajo\u010di se toplotni upogib lahko s\u010dasoma povzro\u010di trajno deformacijo.<\/li>\n<\/ul>\n<h3>11.2 Toplotni upogib in uravnote\u017eenje<\/h3>\n<ul>\n<li>Poskus <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/uravnotezenje\/\">uravnote\u0415\u0455enje<\/a> uravnote\u017eenje rotorja, ko je toplotno upognjen, je brezkoristno.<\/li>\n<li>Korekcijske ute\u017ei, izra\u010dunane za upognjeno stanje, bodo napa\u010dne, ko bo dose\u017eeno ravnovesje.<\/li>\n<li>Pred balansiranjem vedno dovolite toplotno stabilizacijo.<\/li>\n<li>Toplotni upogib lahko tudi prikrije dejansko osnovno neuravnote\u017eenost.<\/li>\n<\/ul>\n<p>To\u010dno zato mora terensko uravnote\u017eenje po\u010dakati na stabilno toplotno stanje. Ko se rotor segreje pri hitrosti in te\u010daj pri po\u010dasnem vrtenju potrdi, da te\u010de pravilno, lahko prenosni dvokanalni analizator, kot je <a href=\"https:\/\/vibromera.eu\/sl\/izdelek\/balanset-1\/\">Balanset-1A<\/a> izmeri amplitudo 1\u00d7 in <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/phase\/\">faza<\/a>, izra\u010duna <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/influence-coefficient\/\">koeficientov vpliva<\/a>, in preverite kon\u010dno <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/residual-unbalance\/\">preostala neuravnote\u017eenost<\/a> ob <a href=\"https:\/\/vibromera.eu\/sl\/glossary\/iso-21940-11\/\">ISO 21940-11<\/a> stopnjo \u2014 zajemanje resni\u010dnega stanja ravnovesja pri vro\u010dem obratovanju, ki ga hladni uravnote\u017eevalni stroj nikoli ne zazna. Dopustni preostali neravnovesje za delo je mogo\u010de vnaprej izra\u010dunati z <a href=\"https:\/\/vibromera.eu\/sl\/calculators\/residual-unbalance-iso1940\/\">Kalkulator preostalih neravnovesij (ISO 21940-11)<\/a>.<\/p>\n<h2>12. Najbolj\u0161e prakse prepre\u010devanja<\/h2>\n<h3>12.1 Za nove namestitve<\/h3>\n<ul>\n<li>Zasnujte simetri\u010dne sisteme ogrevanja in hlajenja.<\/li>\n<li>Namestite obra\u010dalni mehanizem za opremo z mo\u010djo nad 100 kW ali z gredjo, dalj\u0161o od 2 metrov.<\/li>\n<li>Zagotovite ustrezno drena\u017eo, da prepre\u010dite kopi\u010denje vro\u010de teko\u010dine<\/li>\n<li>Izolirajte, da zmanj\u0161ate prenos sevalne toplote.<\/li>\n<\/ul>\n<h3>12.2 Za obstoje\u010do opremo<\/h3>\n<ul>\n<li>Razviti in dosledno upo\u0161tevati pisne postopke ogrevanja<\/li>\n<li>Usposobite operaterje o tveganjih in simptomih toplotnega upogiba.<\/li>\n<li>Namestite nadzor temperature na ve\u010d lokacij.<\/li>\n<li>Med zagoni uporabite sledenje vibracijam za odkrivanje toplotnih te\u017eav.<\/li>\n<li>Dokumentirajte zgodovinske podatke za izpopolnjevanje postopkov s\u010dasoma.<\/li>\n<\/ul>\n<h3>12.3 Vzdr\u017eevalne prakse<\/h3>\n<ul>\n<li>Pred vsakim izklopom preverite delovanje obra\u010dalnega mehanizma<\/li>\n<li>Preverite umerjanje senzorjev temperature le\u017eajev.<\/li>\n<li>Preglejte odvodne sisteme za zama\u0161itve.<\/li>\n<li>Preverite celovitost izolacije.<\/li>\n<li>Poi\u0161\u010dite in odpravite vsak vir asimetri\u010dnega ogrevanja.<\/li>\n<\/ul>\n<p>Toplotni upogib, \u010deprav za\u010dasen in reverzibilen, predstavlja pomemben operativni izziv za velike rotirajo\u010de stroje. Razumevanje njegovih vzrokov, prepoznavanje njegovih simptomov ter upo\u0161tevanje ustreznih postopkov ogrevanja in hlajenja so klju\u010dni za zanesljivo delovanje parnih turbin, plinskih turbin in druge visokotemperaturne rotirajo\u010de opreme \u2014 ter za to, da v danem trenutku razlikujemo med rotorjem, ki preprosto potrebuje \u010das, da se ustali, in tistim, ki ga je dejansko treba uravnote\u017eiti.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/sl\/glossary\/\">\u2190 Nazaj na glavno kazalo<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Spoznajte toplotni lok, za\u010dasno ukrivljenost gredi, ki jo povzro\u010di neenakomerno segrevanje in med ogrevanjem povzro\u010da vibracije, kar je pogosto pri velikih turbinah in motorjih.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-268","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/268\/revisions"}],"predecessor-version":[{"id":101463,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/glossary\/268\/revisions\/101463"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/media?parent=268"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/categories?post=268"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sl\/wp-json\/wp\/v2\/tags?post=268"}],"curies":[{"name":"delovni list","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}