SEALING DEVICE AND COMPOUND PUMP

A sealing device includes: a plurality of non-contact seals (7A to 7C, 9A, 9B) provided along a sealed shaft (1); a contact seal (8, 10) provided on at least one of two sides of the plurality of non-contact seals; an injection part (11) that supplies purge gas into a first space (Sc, Sb) of spaces a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KUGA, Toru, ISHIKAWA, Yasuhiro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CYLINDERS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS PISTONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SEALINGS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A sealing device includes: a plurality of non-contact seals (7A to 7C, 9A, 9B) provided along a sealed shaft (1); a contact seal (8, 10) provided on at least one of two sides of the plurality of non-contact seals; an injection part (11) that supplies purge gas into a first space (Sc, Sb) of spaces arranged in an axial direction of the sealed shaft, the spaces being between the plurality of non-contact seals and the contact seal; and a collector (12A, 12B) that collects the purge gas from a second space (Sl, Sr, Sa) of the spaces between the plurality of non-contact seals and the contact seal, the second space being positioned to be next to the first space in the axial direction.