FLUID MACHINE AND SHAFT SEAL DEVICE

PROBLEM TO BE SOLVED: To provide a fluid machine that has enhanced durability of a shaft seal device for preventing leakage of fluid.SOLUTION: A fluid machine comprises: casings 31a and 31b; an impeller 21a housed in the casings; a main shaft 11 that rotates the impeller 21a; and non-contact annular...

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Bibliographische Detailangaben
Hauptverfasser:	HASHIMOTO HIROTO, SHINOZUKA SHUHEI, TSUJIMURA MANABU
Format:	Patent
Sprache:	eng ; jpn
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:	PROBLEM TO BE SOLVED: To provide a fluid machine that has enhanced durability of a shaft seal device for preventing leakage of fluid.SOLUTION: A fluid machine comprises: casings 31a and 31b; an impeller 21a housed in the casings; a main shaft 11 that rotates the impeller 21a; and non-contact annular seals 41 and 43 that seal gaps in opposed portions between a rotating part of the impeller 21a or the main shaft 11 and a fixed part of the casings 31a and 31b. Surface-treated parts that enhance wear resistance are formed in at least one of the rotating part or the fixed part.SELECTED DRAWING: Figure 2 【課題】流体の漏洩を防止するための軸封装置の耐久性を高め、耐久性のある流体機械を提供する。【解決手段】流体機械は、ケーシング３１ａ、３１ｂと、ケーシング内に収容される羽根車２１ａと、羽根車２１ａを回転させる主軸１１と、羽根車２１ａまたは主軸１１の回転部とケーシング３１ａ、３１ｂの固定部との対向部位の間隙をシールする非接触環状シール４１、４３とを備え、回転部および固定部の少なくとも一方に、耐摩耗性を高める表面処理部が形成されている。【選択図】図２