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1. (CN102272457) Pump having an axial balancing device

Office : China
Application Number: 201080004084.6 Application Date: 08.01.2010
Publication Number: 102272457 Publication Date: 07.12.2011
Publication Kind : A
Prior PCT appl.: Application Number:PCTFR2010050027 ; Publication Number:2010079309 Click to see the data
IPC:
F04D 29/22
F04D 29/042
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
18
Rotors
22
specially for centrifugal pumps
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
04
Shafts or bearings, or assemblies thereof
042
Axially shiftable rotors
CPC:
F04D 29/042
F04D 29/2266
Applicants: SNECMA
斯奈克玛
Inventors: Boufflert Sebastien
塞巴斯蒂安·布夫莱特
Juhel Nicolas
尼古拉斯·朱埃尔
Fayolle Patrice
帕特里斯·法约列
Laffite Stephane
斯特凡·拉菲特
Agents: ni xiaomin
广州三环专利代理有限公司 44202
Priority Data: 0950107 09.01.2009 FR
Title: (EN) Pump having an axial balancing device
(ZH) 具有轴向平衡装置的泵
Abstract: front page image
(EN) The pump of the invention includes a stator (112) and a rotor comprising at least one impeller through which a fluid stream (114) passes. An axial balancing device provided on said impeller (111) comprises a rear balancing chamber (118) and a passage (120) which are provided between the impeller (111) and the stator (112), thus enabling the discharge of fluid from the fluid stream (114) to the balancing chamber (118). Fluid pressure in the balancing chamber (118) compensates for the pressures exerted by the fluid onto the rest of the rotor (111), thus enabling the axial balance of the rotor. The passage (120) comprises an upstream nozzle (140), a downstream nozzle (160), and an intermediate annular chamber (150) which are provided between the walls (151, 152; 141, 142; 161, 162) of the impeller (111) and the stator (112), the intermediate chamber being provided downstream from the upstream nozzle (140) and upstream from the downstream nozzle (160).
(ZH)

一种泵,其包括定子(112)和包含至少一个叶轮的转子,其中流体管道(114)通过该叶轮。被设置在此轮(111)上的轴向平衡装置包括后平衡腔室(118)和设置在轮(111)和定子(112)之间的通道(120),使得流体从流体管道(114)排至平衡腔室(118)。平衡腔室(118)内的流体的压力补偿流体施加在转子(111)的其余部分的压力,使得实现转子的轴向平衡。通道(120)包括上游喷嘴(140)和下游喷嘴(160)以及中间环形腔室(150),它们被设置在轮(111)和定子(112)的壁(151、152;141、142;161、162)之间,所述中间腔室被设置在上游喷嘴(140)的下游和下游喷嘴(160)的上游。


Also published as:
EP2376789JP2012514713US20120148384RU2011130704RU0002539954FR2941019
WO/2010/079309