Vibration suppression device for jet pump and jet pump

There is provided a vibration suppressing device (50) for a jet pump which is located in a reactor pressure vessel of a boiling water reactor and provided with an inlet mixer pipe (33) coupled to a riser pipe (31) and a diffuser (34) coupled to the inlet mixer pipe (33) by means of a slip joint (40)...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	TAKEYAMA, DAIKI, KINUGASA, KUNIHIKO, SHIOYAMA, TSUTOMU, MATSUKAWA, KOZUE, WATANABE, MASANOBU
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MECHANICAL ENGINEERING NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BYUSING INERTIA OF FLUID TO BE PUMPED PUMPS FOR LIQUIDS OR ELASTIC FLUIDS REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION SIPHONS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	There is provided a vibration suppressing device (50) for a jet pump which is located in a reactor pressure vessel of a boiling water reactor and provided with an inlet mixer pipe (33) coupled to a riser pipe (31) and a diffuser (34) coupled to the inlet mixer pipe (33) by means of a slip joint (40). The vibration suppressing device (50) is provided with an extension sleeve (53) disposed on an upper portion of the diffuser (34) of the jet pump and constitutes an extension flow channel (51) on a downstream side of a forward leak flow in a slip clearance (41) formed between an inner peripheral surface of the diffuser (34) and an outer peripheral surface of the inlet mixer pipe (33), and the extension sleeve (53) has a shape such that the extension flow channel (51) has a region in which a flow channel width (Hex) thereof is constant over a predetermined or longer length.