Shut-off valve for high temperature erosive flow - has conical valve seating surfaces to allow adjustment for erosion compensation

The shut-off valve for high temp. erosive flow has a valve and a valve engaging or seating portion in which erosion of an area beginning at its initial erosion point adjacent the valve seat does not erode the valve seat and the valve seating portion of the valve to prevent closing of the valve. The...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: FRANK J. JANDRASI
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:The shut-off valve for high temp. erosive flow has a valve and a valve engaging or seating portion in which erosion of an area beginning at its initial erosion point adjacent the valve seat does not erode the valve seat and the valve seating portion of the valve to prevent closing of the valve. The valve has limited but enough universal movement to be self-seating to accommodate thermal growth. The valve and valve seat can be removed from the valve without taking the valve off the line. The conical valve seating surface of the valve seats exclusively on the most downstream portion of the extended conical seating surface of the valve seat with erosion of the extended conical seating surface of said valve seat occurring only at the most upstream portion. UNE VANNE D'ARRET 10 POUR ECOULEMENTS ABRASIFS LIQUIDES OU SOLIDES A HAUTE TEMPERATURE COMPREND UN CORPS 16 AVEC PASSAGE D'ENTREE 18, CHAMBRE INTERIEURE 20 ET SORTIE 22. LE DEBOUCHE 24 DE 18 DANS 20 DEFINIT LE SIEGE 26 AVEC SURFACE EVASEE VERS L'EXTERIEUR, TANDIS QUE LE CLAPET 30 COMPORTE UNE SURFACE CORRESPONDANTE PROPRE A S'APPLIQUER SUR CE SIEGE. 30 EST RELIE A UN ARBRE DE COMMANDE 14 QUI LE FAIT TOURNER POUR FERMER LA VANNE OU AU CONTRAIRE POUR L'OUVRIR EN SE DEGAGEANT ALORS DE L'ECOULEMENT DIRECT A TRAVERS LE PASSAGE 18. POUR TENIR COMPTE DES DEFORMATIONS THERMIQUES, 30 EST ACCOUPLE A 24 PAR UN DISPOSITIF FORMANT JOINT UNIVERSEL. LE TOUT EST PREVU DE FACON QUE L'EROSION COMMENCE EN AMONT DU SIEGE ET PUISSE ATTEINDRE UNE IMPORTANCE NOTABLE SANS NUIRE A LA FERMETURE EFFICACE DE LA VANNE.