Title:
エネルギー回収装置を備えたポンプ
Document Type and Number:
Japanese Patent JP5344697
Kind Code:
B2
Abstract:
A compact, efficient, reliable, low-cost pump system having an energy recovery apparatus is provided for a large capacity desalination plant using a reverse osmosis membrane (50). The pump system in a desalination plant using a reverse osmosis membrane (50), the system includes a seawater pressurization pump (100) and an energy recovery apparatus that recovers energy from high-pressure concentrated waste water through the reverse osmosis membrane (50) to use the energy as a driving force for the pressurization pump (100). Hydro turbine impellers (34a, 34b, 34c) and pump impellers (4a, 4b) are disposed opposite each other coaxially with a pump shaft (1) of the pressurization pump (100) to reduce an axial thrust. A thrust direction of the shaft (1) is supported by a single axial thrust support device. A radial direction of the shaft (1) is supported by multiple radial submerged bearings (11).
Inventors:
Hiroaki Yoda
Yuma Chiba
Ishii Constitution
Yuma Chiba
Ishii Constitution
Application Number:
JP2009224873A
Publication Date:
November 20, 2013
Filing Date:
September 29, 2009
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
F04D13/04; F03B3/02; F03B11/06; F03B13/00; F04D1/08
Domestic Patent References:
| JP62091693A | ||||
| JP2000145681A | ||||
| JP2006316628A |
Attorney, Agent or Firm:
Polaire Patent Business Corporation