{"id":3089,"date":"2017-08-28T20:41:39","date_gmt":"2017-08-29T00:41:39","guid":{"rendered":"http:\/\/omegaflex.com\/?page_id=3089"},"modified":"2023-12-21T11:13:19","modified_gmt":"2023-12-21T16:13:19","slug":"pressure","status":"publish","type":"page","link":"http:\/\/omegaflex.com\/fr\/engineering-design\/pressure\/","title":{"rendered":"Pression"},"content":{"rendered":"

Pression de service maximale nominale<\/h2>\n

Pression maximale \u00e0 laquelle le tuyau doit \u00eatre soumis en continu. OmegaFlex \u00e9tablit cette valeur en multipliant la pression d'\u00e9clatement nominale par 25%. La pression publi\u00e9e est calcul\u00e9e \u00e0 70\u00b0F.<\/p>\n

Pression d'essai nominale maximale<\/h2>\n

Pression maximale \u00e0 laquelle le tuyau doit \u00eatre soumis lors de l'essai de pression d'\u00e9preuve ou de l'essai du syst\u00e8me. Une d\u00e9formation de l'ondulation du tuyau se produira si la pression d'essai nominale maximale est d\u00e9pass\u00e9e. La pression de service nominale maximale est multipli\u00e9e par 150% pour d\u00e9terminer la pression d'essai nominale maximale.<\/p>\n

Pression d'\u00e9clatement nominale<\/h2>\n

La pression moyenne \u00e0 laquelle l'\u00e2me ou la tresse se rompt \u00e0 temp\u00e9rature ambiante. Des techniques appropri\u00e9es de fabrication d'assemblage de tuyaux doivent \u00eatre utilis\u00e9es pour s'assurer que le tuyau r\u00e9pondra aux pressions publi\u00e9es par OmegaFlex.<\/p>\n

Pression puls\u00e9e ou pression de choc<\/h2>\n

Les performances des tuyaux m\u00e9talliques peuvent \u00eatre consid\u00e9rablement r\u00e9duites sous ce type de pression de travail. Les pressions sont normalement r\u00e9duites par 50% dans les applications de pression puls\u00e9e ou de pression de choc.
\nContactez OmegaFlex pour plus d'informations sur cette application.<\/p>\n

Correction de la pression et de la temp\u00e9rature<\/h2>\n

Les capacit\u00e9s de pression des tuyaux m\u00e9talliques diminuent \u00e0 mesure que la temp\u00e9rature augmente. Consulter le tableau des facteurs de correction de la temp\u00e9rature pour d\u00e9terminer la pression nominale \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es.<\/p>\n

Facteurs de s\u00e9curit\u00e9<\/h2>\n

La pression maximale de service ne doit pas \u00eatre sup\u00e9rieure \u00e0 25% de la pression nominale d'\u00e9clatement apr\u00e8s correction pour la temp\u00e9rature d'application. Le facteur de s\u00e9curit\u00e9 est g\u00e9n\u00e9ralement exprim\u00e9 par un rapport de 4:1.<\/p>\n

Chute de pression<\/h2>\n

Une perte de pression se produit dans les longs tuyaux. La perte de pression est environ 3 fois sup\u00e9rieure \u00e0 celle d'un tuyau en acier. Contactez OmegaFlex si des calculs plus pr\u00e9cis sont n\u00e9cessaires.<\/p>\n

Voir le diagramme de la chute de pression dans 100 pieds de tuyau<\/h2>\n

\"\" \"\"<\/p>\n T\u00e9l\u00e9charger le PDF <\/a>","protected":false},"excerpt":{"rendered":"

Maximum Rated Working Pressure The maximum pressure that the hose should be subjected to on a continuous basis. OmegaFlex establishes this rating by multiplying the nominal rated burst pressure by 25%. Published pressure is calculated at 70\u00b0F. 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