发明名称 |
Advanced super-critical CO<sub>2 </sub>expander-generator |
摘要 |
An expander-generator is disclosed having an expansion device and a generator disposed within a hermetically-sealed housing. The expansion device may be overhung and supported on or otherwise rotate a hollow expansion rotor having a thrust balance seal being arranged at least partially within a chamber defined in the expansion rotor. Partially-expanded working fluid is extracted from an intermediate expansion stage and a first portion of the extracted working fluid is used cool the generator and accompanying radial bearings. A second portion of the extracted working fluid may be introduced into the chamber defined within the expander rotor via a conduit defined in the thrust balance seal chamber. The second portion of extracted working fluid minimizes unequal axial thrust loads on the expander rotor due to the overhung arrangement. |
申请公布号 |
US8893499(B2) |
申请公布日期 |
2014.11.25 |
申请号 |
US201213647972 |
申请日期 |
2012.10.09 |
申请人 |
Dresser-Rand Company |
发明人 |
Maier William C. |
分类号 |
F01K7/32;F01K7/34;F01D15/10;H02K7/18;F04D27/02;F01D3/00;F01D3/04;F02G1/00;F01K25/10;F01K17/04;H02K5/16;H02K7/14;H02K9/08 |
主分类号 |
F01K7/32 |
代理机构 |
Edmonds & Nolte, PC |
代理人 |
Edmonds & Nolte, PC |
主权项 |
1. A rotating machine, comprising:
a hermetically-sealed housing having an expander rotor and a generator rotor rotatably arranged therein, the generator rotor being supported by one or more radial bearings and the expander rotor being a tubular shaft overhung off one end of the generator rotor and defining a chamber therein; an expansion device disposed within the housing and being configured to expand a working fluid to rotate the expander rotor and thereby drive the generator rotor; a generator disposed within the housing, axially-spaced from the expansion device and partially supported by the generator rotor; an extraction line fluidly coupled to an intermediate expansion stage of the expansion device and configured to extract working fluid therefrom; a first fluid line fluidly coupling the extraction line to the housing and being configured to introduce a first portion of extracted working fluid into the housing to cool the generator and the radial bearings; and a second fluid line fluidly coupling the extraction line to the chamber and being configured to introduce a second portion of extracted working fluid into the chamber to minimize unequal axial thrust loads. |
地址 |
Olean NY US |