{"id":1527,"date":"2025-09-03T14:36:16","date_gmt":"2025-09-03T06:36:16","guid":{"rendered":"https:\/\/www.tflequip.com\/?p=1527"},"modified":"2025-09-03T14:36:16","modified_gmt":"2025-09-03T06:36:16","slug":"causes-and-solutions-for-excessive-vibration-of-centrifugal-pumps","status":"publish","type":"post","link":"https:\/\/www.tflequip.com\/sk\/causes-and-solutions-for-excessive-vibration-of-centrifugal-pumps\/","title":{"rendered":"Pr\u00ed\u010diny a rie\u0161enia nadmern\u00fdch vibr\u00e1ci\u00ed odstrediv\u00fdch \u010derpadiel"},"content":{"rendered":"
Pr\u00ed\u010diny a rie\u0161enia nadmern\u00fdch vibr\u00e1ci\u00ed odstrediv\u00fdch \u010derpadiel:<\/div>\n

 <\/p>\n

    \n
  1. \n
    Upevnenie z\u00e1kladov
    Ak sa vyskytne porucha, najprv skontrolujte, \u010di s\u00fa kotviace skrutky hlavn\u00e9ho pohonu a odstrediv\u00e9ho \u010derpadla bezpe\u010dne upevnen\u00e9. Ak je z\u00e1klad nestabiln\u00fd, nevyhnutne to sp\u00f4sob\u00ed vibr\u00e1cie \u010derpadla. Ke\u010f sa vyl\u00fa\u010dia in\u00e9 pr\u00ed\u010diny, ale probl\u00e9m sa st\u00e1le ned\u00e1 vyrie\u0161i\u0165, je potrebn\u00e9 zv\u00e1\u017ei\u0165 aj to, \u010di je pevnos\u0165 kotevn\u00e9ho z\u00e1kladu dostato\u010dn\u00e1. Niekedy m\u00f4\u017ee z kon\u0161truk\u010dn\u00fdch d\u00f4vodov sp\u00f4sobi\u0165 vibr\u00e1cie aj relat\u00edvne m\u00e4kk\u00fd z\u00e1klad.<\/div>\n<\/li>\n
  2. \n
    Nastavenie centrovania
    \u010castou pr\u00ed\u010dinou vibr\u00e1ci\u00ed je aj nespr\u00e1vne nastavenie. Stred mus\u00ed by\u0165 nastaven\u00fd v stanovenom rozsahu v pr\u00edsnom s\u00falade s normami.<\/div>\n<\/li>\n
  3. \n
    Kontrola lo\u017e\u00edsk
    V pr\u00edpade \u010derpadiel pou\u017e\u00edvaj\u00facich klzn\u00e9 lo\u017eisk\u00e1, ak sa po vy\u0161\u0161ie uveden\u00fdch pr\u00e1cach st\u00e1le nedaj\u00fa odstr\u00e1ni\u0165 vibr\u00e1cie, treba skontrolova\u0165 stav kontaktov puzdier lo\u017e\u00edsk. V pr\u00edpade norm\u00e1lnych lo\u017eiskov\u00fdch puzdier by malo ma\u0165 spodn\u00e9 puzdro rovnomern\u00e9 kontaktn\u00e9 stopy, rozlo\u017een\u00e9 hlavne v strednej a spodnej \u010dasti, a kontaktn\u00e1 plocha by mala by\u0165 v\u00e4\u010d\u0161ia ako 75%. Horn\u00e9 puzdro by malo ma\u0165 medzeru, spravidla 0,1 - 0,15% priemeru hriade\u013ea. Horn\u00e1 v\u00fdvodka puzdra by mala ma\u0165 tesnos\u0165 0,02 - 0,02 mm na hornom puzdre. Ak nie je mo\u017en\u00e9 splni\u0165 tieto po\u017eiadavky, vo v\u0161eobecnosti sa na rie\u0161enie probl\u00e9mu prij\u00edmaj\u00fa met\u00f3dy, ako je pridanie alebo odstr\u00e1nenie tesnen\u00ed na \u00fast\u00ed puzdra a \u0161krabanie puzdier lo\u017eiska. V pr\u00edpade \u010derpadiel, ktor\u00e9 pou\u017e\u00edvaj\u00fa valiv\u00e9 lo\u017eisk\u00e1, by sa mala mera\u0165 tesnos\u0165 lo\u017eiskov\u00e9ho v\u00fdvodu na vonkaj\u0161om kr\u00fa\u017eku lo\u017eiska. Vo v\u0161eobecnosti by mala by\u0165 vyhraden\u00e1 dilata\u010dn\u00e1 medzera pribli\u017ene 0,20 mm, aby sa zabr\u00e1nilo p\u00f4sobeniu axi\u00e1lnej sily na lo\u017eisko, ke\u010f sa rotor pri zahriat\u00ed roz\u0161iruje.<\/div>\n<\/li>\n
  4. \n
    Nastavenie stredovej polohy rotora
    Rotor \u010derpadla by mal by\u0165 s\u00fastredn\u00fd so statorom. V opa\u010dnom pr\u00edpade bude po\u010das prev\u00e1dzky \u010derpadla doch\u00e1dza\u0165 k dynamick\u00e9mu a statick\u00e9mu treniu, \u010do bude ma\u0165 za n\u00e1sledok vibr\u00e1cie. Nastavenie stredovej polohy rotora \u010derpadla mo\u017eno vo v\u0161eobecnosti dosiahnu\u0165 nastaven\u00edm radi\u00e1lnej polohy lo\u017eiska \u010derpadla. Pri stredovom nastaven\u00ed \u010derpadiel podopret\u00fdch lo\u017eiskov\u00fdmi puzdrami by sa mali lo\u017eiskov\u00e9 puzdr\u00e1 na oboch stran\u00e1ch \u010derpadla zdvihn\u00fa\u0165 s\u00fa\u010dasne, aby sa splnili po\u017eiadavky. V\u0161eobecne plat\u00ed, \u017ee v\u00fd\u0161ka zdvihu je polovica medzery tesniaceho kr\u00fa\u017eku, pri\u010dom to ist\u00e9 plat\u00ed pre obe strany. V pr\u00edpade horizont\u00e1lnych odstrediv\u00fdch \u010derpadiel s delenou skri\u0148ou sa v pr\u00edpade potreby m\u00f4\u017ee otvori\u0165 horn\u00fd kryt \u010derpadla, aby sa priamo zmerala medzera na tesniacom kr\u00fa\u017eku. Po nastaven\u00ed na splnenie po\u017eiadaviek vyv\u0155tajte otvory medzi nosi\u010dom lo\u017eiska a telesom \u010derpadla, aby ste nakonfigurovali \u010dapy, a potom ich op\u00e4\u0165 zmontovali, aby ste dosiahli \u00fa\u010del presn\u00e9ho nastavenia.<\/div>\n<\/li>\n
  5. \n
    Meranie a nastavenie ohybu hriade\u013ea, chodu a koncovej v\u00f4le po \u010diasto\u010dnej mont\u00e1\u017ei rotora
    Ak sa nen\u00e1jde \u017eiadna vonkaj\u0161ia pr\u00ed\u010dina vibr\u00e1ci\u00ed, \u010derpadlo sa m\u00f4\u017ee len rozobra\u0165. Najprv zmerajte a opravte ohyb hriade\u013ea. Po potvrden\u00ed, \u017ee nie je \u017eiadny probl\u00e9m, \u010diasto\u010dne zostavte rotor, zmerajte celkov\u00fd chod a koncov\u00fa v\u00f4\u013eu a opravte ich, ak prekra\u010duj\u00fa normu.<\/div>\n<\/li>\n
  6. \n
    Zis\u0165ovanie dynamickej a statickej rovnov\u00e1hy
    Po demont\u00e1\u017ei \u010derpadla by sa mal ka\u017ed\u00fd stupe\u0148 obe\u017en\u00e9ho kolesa podrobi\u0165 sk\u00fa\u0161ke statick\u00e9ho vyv\u00e1\u017eenia, aby sa zabr\u00e1nilo vibr\u00e1ci\u00e1m pri sp\u00fa\u0161\u0165an\u00ed \u010derpadla. Ak to podmienky umo\u017e\u0148uj\u00fa, mala by sa vykona\u0165 aj sk\u00fa\u0161ka dynamick\u00e9ho vyv\u00e1\u017eenia. Dynamick\u00e1 sk\u00fa\u0161ka vyv\u00e1\u017eenosti je obzvl\u00e1\u0161\u0165 d\u00f4le\u017eit\u00e1 pri ve\u013ek\u00fdch viacstup\u0148ov\u00fdch \u010derpadl\u00e1ch.<\/div>\n<\/li>\n
  7. \n
    Vplyv vonkaj\u0161\u00edch podmienok na \u010derpadlo
    Ak sa po odstr\u00e1nen\u00ed v\u0161etk\u00fdch mo\u017en\u00fdch probl\u00e9mov samotn\u00e9ho \u010derpadla st\u00e1le nepodar\u00ed vyrie\u0161i\u0165 probl\u00e9m s vibr\u00e1ciami, treba zv\u00e1\u017ei\u0165 aj vplyv vonkaj\u0161\u00edch podmienok na \u010derpadlo. Napr\u00edklad: rezonancia sp\u00f4soben\u00e1 t\u00fdm, \u017ee vlastn\u00e1 frekvencia z\u00e1kladu \u010derpadla je podobn\u00e1 frekvencii vibr\u00e1ci\u00ed, vibr\u00e1cie \u010derpadla sp\u00f4soben\u00e9 poruchou prim\u00e1rneho pohonu a abnorm\u00e1lne vibr\u00e1cie \u010derpadla sp\u00f4soben\u00e9 n\u00faten\u00fdm nastaven\u00edm v spojen\u00ed medzi potrub\u00edm a \u010derpadlom. Vo v\u0161eobecnosti mo\u017eno na vyrie\u0161enie probl\u00e9mu prija\u0165 zodpovedaj\u00face opatrenia.<\/div>\n<\/li>\n<\/ol>\n

    \"4\"<\/p>","protected":false},"excerpt":{"rendered":"

    Causes and solutions for excessive vibration of centrifugal pumps:   Foundation fasteningWhen a defect occurs, first check whether the anchor bolts of the prime mover and the centrifugal pump are securely fastened. If the foundation is unstable, it will inevitably cause the pump to vibrate. When other causes are ruled out but the problem still […]<\/p>","protected":false},"author":4,"featured_media":1463,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[36],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/posts\/1527"}],"collection":[{"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/comments?post=1527"}],"version-history":[{"count":0,"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/posts\/1527\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/media\/1463"}],"wp:attachment":[{"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/media?parent=1527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/categories?post=1527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tflequip.com\/sk\/wp-json\/wp\/v2\/tags?post=1527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}