Title:
SUPERCRITICAL CARBON DIOXIDE RADIAL-INFLOW TURBINE STRUCTURE SUITABLE FOR GAS INLET AT 600 ℃
Document Type and Number:
WIPO Patent Application WO/2024/045240
Kind Code:
A1
Abstract:
A supercritical carbon dioxide radial-inflow turbine structure suitable for gas inlet at 600 ℃, belonging to the technical field of turbines. The present invention aims to solve the problem that sealing of supercritical carbon dioxide turbines is difficult at 25 MPa-600 ℃. The structure comprises a low-pressure radial-inflow turbine, a gearbox and a high-pressure radial-inflow turbine; a rotor with cantilevers at both ends is provided on the gearbox, one end of the rotor passing through a low-pressure sealed casing and a low-pressure heat-insulation casing of the low-pressure radial-inflow turbine to extend into a low-pressure volute, and being connected to a low-pressure centripetal impeller; the low-pressure sealed casing is connected to the rotor by means of a dry gas seal, and a low-temperature carbon dioxide gas source is communicated with the interior of the low-pressure sealed casing by means of a pipeline; the other end of the rotor and the high-pressure radial-inflow turbine have a cooperation relationship the same as that with the low-pressure end. A low-temperature carbon dioxide gas is introduced from the outside to cool the dry gas seals, thus solving the problem that sealing of supercritical carbon dioxide turbines is difficult at high gas inlet parameters of 25 MPa-600 ℃.
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Inventors:
XU DIANJI (CN)
WEI HONGYANG (CN)
XU PENG (CN)
ZHANG CHUNXIU (CN)
XING GUANYI (CN)
GUO QINGFENG (CN)
ZHAI YANKAI (CN)
WANG CHENGJIA (CN)
LIU YANG (CN)
YANG YIMING (CN)
LV TIANHAO (CN)
WEI HONGYANG (CN)
XU PENG (CN)
ZHANG CHUNXIU (CN)
XING GUANYI (CN)
GUO QINGFENG (CN)
ZHAI YANKAI (CN)
WANG CHENGJIA (CN)
LIU YANG (CN)
YANG YIMING (CN)
LV TIANHAO (CN)
Application Number:
PCT/CN2022/120425
Publication Date:
March 07, 2024
Filing Date:
September 22, 2022
Export Citation:
Assignee:
HARBIN ELECTRIC POWER GENERATION EQUIPMENT NATIONAL ENGINEERING RES CENTER (CN)
HARBIN STEAM TURBINE FACTORY CO LTD (CN)
HARBIN STEAM TURBINE FACTORY CO LTD (CN)
International Classes:
F01K7/32; F01D9/04; F01D11/04; F01D11/12; F01D25/08; F01D25/24; F01K7/18; F01K25/10
Foreign References:
| CN217783581U | 2022-11-11 | |||
| CN112343668A | 2021-02-09 | |||
| CN110630535A | 2019-12-31 | |||
| US20140119881A1 | 2014-05-01 | |||
| CN112502796A | 2021-03-16 | |||
| EP3805529A1 | 2021-04-14 |
Attorney, Agent or Firm:
HARBIN WEICHEN PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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