Title:
DESIGN METHOD FOR TURBINE IMPELLER OF MEMBRANE DESALINATION AND ENERGY RECOVERY INTEGRATED MACHINE
Document Type and Number:
WIPO Patent Application WO/2022/151608
Kind Code:
A1
Abstract:
A design method for a centrifugal pump as a turbine impeller. The centrifugal pump as a turbine impeller is applied to a membrane desalination and energy recovery integrated machine. The main steps of the design method are: determining a rated flow under a turbine operating condition; reducing the rated flow at a certain ratio to serve as a flow under a turbine design operating condition; carrying out conversion on the basis of the flow and a rated head and a rated rotational speed under the turbine operating condition, so as to obtain a flow, a lift and a rotational speed under a pump operating condition; taking the flow, the lift and the rotational speed under the pump operating condition as design parameters; and designing hydraulics of an impeller by using a speed coefficient method under the pump operating condition, and determining propeller parameters such as an inlet diameter D1, an outlet diameter D2, an outlet width b2, inlet and outlet setting angles, the number of blades, and a wrap angle. The impeller obtained by means of the design method can improve the efficiency and running safety stability of a membrane desalination and energy recovery integrated machine under various types of operating conditions.
Inventors:
ZHANG DESHENG (CN)
ZHANG QI (CN)
QI BING (CN)
YANG FEI (CN)
ZHAO RUIJIE (CN)
LI YAN (CN)
GAO XIONGFA (CN)
ZHANG QI (CN)
QI BING (CN)
YANG FEI (CN)
ZHAO RUIJIE (CN)
LI YAN (CN)
GAO XIONGFA (CN)
Application Number:
PCT/CN2021/088337
Publication Date:
July 21, 2022
Filing Date:
April 20, 2021
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
F04D29/22; F03B3/10
Foreign References:
| CN104699888A | 2015-06-10 | |||
| CN106194821A | 2016-12-07 | |||
| CN111832132A | 2020-10-27 | |||
| US4108570A | 1978-08-22 | |||
| US20050249594A1 | 2005-11-10 |
Other References:
QI BING; ZHANG DE-SHENG; ZHAO RUI-JIE; LI YAN; SHI WEI-DONG: "Numerical Study On the Design of Energy Recovery Turbine For Desalination by Reducing Flow Method", PROCEEDINGS OF THE 31TH NATIONAL CONFERENCE ON HYDRODYNAMICS, 30 November 2020 (2020-11-30), pages 1037 - 1044, XP009538396, DOI: 10.26914/c.cnkihy.2020.036943
" Pump Theory and Technology", 30 June 2014, CHINA MACHINE PRESS, CN, ISBN: 978-7-111-45616-2, article YUAN, SHOUQI : "Chapter 4. Hydraulic Design of Over-Flow Components of Centrifugal Pumps and Mixed Flow Pumps; Chapter 17. Pump As Turbine", pages: 36 - 50, 381-383, XP009538633
" Pump Theory and Technology", 30 June 2014, CHINA MACHINE PRESS, CN, ISBN: 978-7-111-45616-2, article YUAN, SHOUQI : "Chapter 4. Hydraulic Design of Over-Flow Components of Centrifugal Pumps and Mixed Flow Pumps; Chapter 17. Pump As Turbine", pages: 36 - 50, 381-383, XP009538633
Attorney, Agent or Firm:
NANJING DOYES INTELLECTUAL PROPERTY CO., LTD. (CN)
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