{"id":33474,"date":"2021-04-19T11:35:17","date_gmt":"2021-04-19T09:35:17","guid":{"rendered":"https:\/\/aw-chesterton.eu\/ar-vibrationsovervakning-av-pumpar-tillracklig-for-att-undvika-fel\/"},"modified":"2021-04-19T11:35:17","modified_gmt":"2021-04-19T09:35:17","slug":"ar-vibrationsovervakning-av-pumpar-tillracklig-for-att-undvika-fel","status":"publish","type":"post","link":"https:\/\/aw-chesterton.eu\/sv\/product\/equipment-monitoring\/ar-vibrationsovervakning-av-pumpar-tillracklig-for-att-undvika-fel\/","title":{"rendered":"\u00c4r vibrations\u00f6vervakning av pumpar tillr\u00e4cklig f\u00f6r att undvika fel?"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><em>Vibrations- och yttemperaturm\u00e4tningar \u00e4r de vanligaste metoderna f\u00f6r att \u00f6vervaka tillst\u00e5ndet f\u00f6r pumpar och annan roterande utrustning.\u00a0Men vibrations- och yttemperaturm\u00e4tningar av pumpens motor eller lagerhus \u00e4r bara en del av verkligheten.<\/em><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Vilka \u00e4r de vanligaste orsakerna till vibrationer i pumpar?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Det finns m\u00e5nga k\u00e4llor till vibration i pumpar.&nbsp;De vanligaste orsakerna \u00e4r nedb\u00f6jning av axlar, obalanser, feljusteringar, hydrauliska krafter och kontakt mellan komponenter.&nbsp;Dessa problem kan alla vara skadliga f\u00f6r tillf\u00f6rlitligheten och driften av roterande utrustning.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En \u00f6kning av vibrationer kan leda till:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>\u00d6verdrivna axelr\u00f6relser som riskerar att skada t\u00e4tningen<\/li><li>Permanenta skador i lager<\/li><li>Negativ p\u00e5verkan av toleranser i bussningar och slitringar<\/li><li>Minskad sp\u00e4nnkraft I t.ex. bultf\u00f6rband<\/li><li>Skadade komponenter p\u00e5 grund utmattning av materialet<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Koordinering av pumpvibrations\u00f6vervakning med processtryck och temperatur<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e4r vi tittar p\u00e5 en pump och orsakerna till pumphaverier m\u00e5ste vi ha en bredare blick p\u00e5 alla dess komponenter.\u00a0Det \u00e4r viktigt att notera att pumphaverier inte alltid b\u00f6rjar med f\u00f6r\u00e4ndringar i vibrationer och yttemperatur.\u00a0Vissa fel i en pumpapplikation b\u00f6rjar med tryckf\u00f6r\u00e4ndringar &#8211; som i slut\u00e4ndan \u00f6vers\u00e4tts till vibrationer.\u00a0Fluktuationer i v\u00e4tskeegenskaperna, f\u00f6r\u00e4ndringar i rotationshastighet eller riktning, igens\u00e4ttning p\u00e5 tryck eller sugsidan och slitna komponenter kan orsaka f\u00f6r\u00e4ndringar i pumptrycket.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/aw-chesterton.eu\/wp-content\/uploads\/2021\/04\/Correlation-de-la-surveillance-des-vibrations-de-la-pompe-avec-la-pression-et-la-temperature-du-process.jpg\" alt=\"Koordinering av pumpvibrations\u00f6vervakning med processtryck och temperatur\" class=\"wp-image-3048\"\/><figcaption><strong>Diagram: Pumphaverier per komponent (data fr\u00e5n <a class=\"external-link\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.pumpsandsystems.com\/home\">Pump &amp; Systems <\/a>)<\/strong><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Orsaker till Pumphaverier #1: T\u00e4tningar<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Den f\u00f6rsta komponenten som havererar i pumpar \u00e4r oftast t\u00e4tningen.<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Fel p\u00e5 t\u00e4tningen kan orsakas av flera faktorer, varav m\u00e5nga inte uppt\u00e4cks i det tidiga skedet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e5gra av de vanligaste faktorerna \u00e4r tryckf\u00f6r\u00e4ndringar p\u00e5 pumpens sug- och trycksida som direkt p\u00e5verkar tryck och temperatur i packboxen (t\u00e4tnings-kammaren) och d\u00e4rmed ocks\u00e5 den <a class=\"external-link\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/aw-chesterton.se\/produkter\/mekaniska-tatningar\/\">mekaniska t\u00e4tningen<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Exempel: under drift \u00f6kar vibrationerna till f\u00f6ljt av ett tryckfall och en \u00f6kning av packboxens temperatur pga. en restriktion p\u00e5 pumpens sugsida.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/aw-chesterton.eu\/wp-content\/uploads\/2021\/04\/Pressure.jpg\" alt=\"I det h\u00e4r scenariot, om bara lagervibrationer och yttemperatur \u00f6vervakas, skulle processf\u00f6r\u00e4ndringar inuti pumpen g\u00e5 obem\u00e4rkt f\u00f6rbi. \" class=\"wp-image-3050\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">I det h\u00e4r scenariot, om bara lagervibrationer och yttemperatur \u00f6vervakas, skulle processf\u00f6r\u00e4ndringar inuti pumpen g\u00e5 obem\u00e4rkt f\u00f6rbi.&nbsp;Med en \u00f6kning av t\u00e4tningskammarens temperatur och ett tryckfall kan t\u00e4tningen (s\u00e5som en enkel-eller dubbel mekanisk t\u00e4tning utan ett trycksatt supportsystem) uppleva torrk\u00f6rningsliknande f\u00f6rh\u00e5llanden, vilket orsakar att t\u00e4tningen havererar och slutligen leder till att pumpen sj\u00e4lv havererar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">F\u00f6r en dubbel mekanisk t\u00e4tning som k\u00f6rs med barri\u00e4rv\u00e4tska (trycksatt) hj\u00e4lper en \u00f6vervakning av trycket och temperaturen p\u00e5 barri\u00e4rv\u00e4tsketanken och processv\u00e4tskan inuti pumpen att bekr\u00e4fta r\u00e4tt tryckdifferens. Detta \u00e4r n\u00f6dv\u00e4ndigt f\u00f6r att s\u00e4kerst\u00e4lla en adekvat t\u00e4tningssm\u00f6rjning och drift.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00d6vervakning av processtryck och temperatur i kombination med vibrationer kan ge en tydlig f\u00f6rst\u00e5else f\u00f6r pumpens tillst\u00e5nd vilket hj\u00e4lper till att tidigt kunna uppt\u00e4cka st\u00f6rningar f\u00f6r att f\u00f6rhindra fel och \u00f6ka drifts\u00e4kerheten.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Orsaker till Pump-haverier # 2: lager<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Den n\u00e4st vanligaste komponenten som g\u00e5r s\u00f6nder i pumpar \u00e4r lager.\u00a0<\/strong><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Lagerproblem orsakas vanligtvis av korrosion fr\u00e5n t\u00e4tningsl\u00e4ckage, obalans i utrustning, axeluppriktning, skadat pumphjul etc.\u00a0Underh\u00e5ll av lager \u00e4r normalt f\u00f6rebyggande.\u00a0Lagren byts ofta ut vid t\u00e4tningsbyten \u00e4ven n\u00e4r de fortfarande \u00e4r i gott skick.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/aw-chesterton.eu\/wp-content\/uploads\/2021\/04\/Technician-inspector-alignment-pump-and-electric-motor.jpg\" alt=\" Servicetekniker justerar pumpen och elmotorn p\u00e5 plats\" class=\"wp-image-3051\"\/><figcaption><strong>Servicetekniker justerar pumpen och elmotorn p\u00e5 plats<\/strong><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Fullst\u00e4ndig \u00f6vervakning av pumpens tillst\u00e5nd<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Generellt kr\u00e4vs det att pumpens tryck, temperatur\u00a0<em>och<\/em>\u00a0vibrationer\u00a0\u00f6vervakas f\u00f6r\u00a0att verkligen ge en fullst\u00e4ndig och korrekt bild av pumpens faktiska tillst\u00e5nd.\u00a0<strong><u> <\/u><\/strong><a class=\"external-link\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/aw-chesterton.se\/okategoriserade\/chesterton-connect-overvakningssensor\/\"><strong>Chesterton Connect<\/strong><\/a><strong>\u00a0&#x2122;<\/strong>\u00a0sensor i kombination med mobil-appen, och Cloud-tj\u00e4nsten m\u00f6jligg\u00f6r en 24\/7 \u00f6vervakning av utrustningens tillst\u00e5nd i alla de fyra omr\u00e5dena (processtryck, processtemperatur, vibrationer, och yttemperaturen) s\u00e5 att du kan identifiera problem tidigt och g\u00f6ra korrigeringar f\u00f6r \u00f6vergripande \u00f6kad tillf\u00f6rlitlighet och f\u00f6rb\u00e4ttrad anl\u00e4ggningsprestanda.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">F\u00f6ljande fallstudier visar hur Chesterton Connect-sensorn anv\u00e4ndes f\u00f6r att \u00f6vervaka processtryck, temperatur och vibrationer som gav v\u00e4rdefull information f\u00f6r att spara utrustningskostnader.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Fallstudie 1: Identifiera torrk\u00f6rningsf\u00f6rh\u00e5llanden<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/aw-chesterton.eu\/wp-content\/uploads\/2021\/04\/Chesterton-Connect-on-Transfer-Pump-application.png\" alt=\"Chesterton Connect p\u00e5 en transportpump\" class=\"wp-image-3052\"\/><figcaption><strong>Chesterton Connect p\u00e5 en transportpump<\/strong><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">En kemisk anl\u00e4ggning upplevde ett ovanligt stort antal t\u00e4tningshaverier p\u00e5 en transferpump med 65 % salpetersyra och man anv\u00e4nde enkelt\u00e4tningar i patronutf\u00f6rande.&nbsp;MTBR l\u00e5g p\u00e5 endast 1,2 m\u00e5nader.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En servicetekniker kontrollerade driften av systemet s\u00e5v\u00e4l som den mekaniska t\u00e4tningsinstallationen och hittade inga m\u00e4rkbara problem i pumpens drift.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e5r specialist rekommenderade installationen av en Chesterton Connect.&nbsp;Inom n\u00e5gra dagar kunde de snabbt samla in tillr\u00e4ckligt med information f\u00f6r att fastst\u00e4lla att det fanns ett undertryck i t\u00e4tningskammaren n\u00e4r pumpen var i drift.&nbsp;Det negativa trycket fick den mekaniska t\u00e4tningen att visa klassiska torrk\u00f6rningssymptom.&nbsp;Efter att ha genomf\u00f6rt en systemrevision kunde kunden strypa en ventil f\u00f6r att s\u00e4kerst\u00e4lla korrekt fl\u00f6de fr\u00e5n pumpen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pumpen och den mekaniska t\u00e4tningen g\u00e5r nu felfritt och den angivna MTBR f\u00f6rb\u00e4ttrades till mer \u00e4n 24 m\u00e5nader.&nbsp;De potentiella kostnadsbesparingarna f\u00f6r den mekaniska t\u00e4tningen f\u00f6r denna pump \u00e4r mer \u00e4n 300.000 SEK.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Besparingarna som g\u00f6rs tack vare ett mindre behov av underh\u00e5ll och driftsf\u00f6rb\u00e4ttringar f\u00f6rv\u00e4ntas bli \u00e4nnu h\u00f6gre, men ber\u00e4knas f\u00f6r n\u00e4rvarande fortfarande.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Fallstudie # 2: Vertikal turbinboosterpump<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00e4tningen till en tv\u00e5stegs vertikal turbinboosterpump gick s\u00f6nder inom 2-3 dagar efter installation.\u00a0T\u00e4tningen byttes ut och ett fel uppstod igen inom samma 2-3-dagarsperiod.\u00a0Det fanns uppenbarligen ett problem, men ingen visste varf\u00f6r, och det var om\u00f6jligt att &#8221;se inuti&#8221; t\u00e4tningen f\u00f6r att fastst\u00e4lla orsaken till problemet.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/aw-chesterton.eu\/wp-content\/uploads\/2021\/04\/Chesterton-Connect-installed-on-Plan-13.png\" alt=\"Chesterton Connect installerat med Plan 13\" class=\"wp-image-3053\"\/><figcaption><strong>Chesterton Connect installerat med Plan 13<\/strong><\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">En Chesterton Connect &#x2122; -sensor installerades f\u00f6r att \u00f6vervaka processf\u00f6rh\u00e5llandena som orsakar t\u00e4tningsfel.&nbsp;Med Chesterton Connect-appen kunde anv\u00e4ndaren best\u00e4mma att processtrycket (sj\u00f6nk) och att temperaturen (\u00f6kade) medan pumpen var i drift.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tack vare Chesterton Connect-data identifierades kritiska drifts\u00e4ndringar och problemet med t\u00e4tningen \u00e5tg\u00e4rdades.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ursprunglig artikel av <a class=\"external-link\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/blog.chesterton.com\/equipment-monitoring\/pump-condition-monitoring-sufficient-to-avoid-failure\/\">JUAN CID<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><a class=\"external-link\" target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/aw-chesterton.se\/okategoriserade\/chesterton-connect-overvakningssensor\/\">L\u00e4s mer om Chesterton Connect p\u00e5 Chestertons webbplats.<\/a><\/strong><\/h3>\n","protected":false},"excerpt":{"rendered":"<p>Vibrations- och yttemperaturm\u00e4tningar \u00e4r de vanligaste metoderna f\u00f6r att \u00f6vervaka tillst\u00e5ndet f\u00f6r pumpar och annan roterande utrustning.\u00a0Men vibrations- och yttemperaturm\u00e4tningar av pumpens motor eller lagerhus \u00e4r bara en del av verkligheten. Vilka \u00e4r de vanligaste orsakerna till vibrationer i pumpar? Det finns m\u00e5nga k\u00e4llor till vibration i pumpar.&nbsp;De vanligaste orsakerna \u00e4r nedb\u00f6jning av axlar, obalanser,&hellip;<\/p>\n","protected":false},"author":10,"featured_media":4217,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13445,13829],"tags":[],"class_list":["post-33474","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-equipment-monitoring","category-mekaniska-tatningar"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00c4r vibrations\u00f6vervakning av pumpar tillr\u00e4cklig f\u00f6r att undvika fel? - A.W. Chesterton Company \u2013 EU<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aw-chesterton.eu\/sv\/product\/equipment-monitoring\/ar-vibrationsovervakning-av-pumpar-tillracklig-for-att-undvika-fel\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00c4r vibrations\u00f6vervakning av pumpar tillr\u00e4cklig f\u00f6r att undvika fel? - A.W. Chesterton Company \u2013 EU\" \/>\n<meta property=\"og:description\" content=\"Vibrations- och yttemperaturm\u00e4tningar \u00e4r de vanligaste metoderna f\u00f6r att \u00f6vervaka tillst\u00e5ndet f\u00f6r pumpar och annan roterande utrustning.\u00a0Men vibrations- och yttemperaturm\u00e4tningar av pumpens motor eller lagerhus \u00e4r bara en del av verkligheten. Vilka \u00e4r de vanligaste orsakerna till vibrationer i pumpar? Det finns m\u00e5nga k\u00e4llor till vibration i pumpar.&nbsp;De vanligaste orsakerna \u00e4r nedb\u00f6jning av axlar, obalanser,&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aw-chesterton.eu\/sv\/product\/equipment-monitoring\/ar-vibrationsovervakning-av-pumpar-tillracklig-for-att-undvika-fel\/\" \/>\n<meta property=\"og:site_name\" content=\"A.W. 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