| 摘要 |
<p>1,227,580. Gas turbine plant - closed cycle type. SULZER BROS. Ltd. July 29, 1968 [July 27, 1967], No.36070/68. Heading F1G. [Also in Division G6] The invention relates to a gas turbine plant associated with a nuclear reactor, the turbine plant operating on a closed circuit with CO 2 as the working fluid, there being at least two turbine expansion stages with reheat between the stages by heat from the nuclear reactor, the useful power being supplied by the low-pressure turbine stage. A branch line is connected to the working fluid circuit through which part of the working fluid is tapped off and cooled being thereby liquefied, the liquid C0 2 being then pressurized and returned to the circuit. A line is also provided connecting the branch line downstream of the cooler with a point in the circuit upstream of the reactor, the line being closable. In the embodiment shown, the plant comprises firstly an HP turbine 7 which drives an IP compressor 3, and HP compressor 5 and a liquid C0 2 pump 13, secondly, an LP turbine 9 which drives an LP compressor 1 also a useful load in the form of an electric generator 15, and thirdly, a nuclear reactor 8. Gaseous CO 2 is compressed in LP compressor 1, cooled in inter-stage cooler 2 and then further compressed in IP compressor 3. The C0 2 is then divided into two streams, one passing to HP compressor 5 thence through heater 6 where it is heated by CO 2 discharging from the LP turbine 9, the heated C0 2 then passing to the HP turbine 7. The C0 2 discharging from the turbine 7 is then reheated in the nuclear reactor 8 and passed to the LP turbine 9, the C0 2 discharging from the turbine passing through cooler 6, a second cooler 14 and a third cooler 10, the cooled gas finally passing back into the LP compressor 1. The second portion of C0 2 from the IP compressor 3 is passed to a first cooler 11 and then to a second cooler 12 where it is liquefied, the liquid CO 2 then passing to a pump 13 where its pressure is increased and the CO 2 is changed back to the gaseous phase, the gaseous C0 2 then passing to the heat exchanger 14 where it is utilised to cool the C0 2 discharged from the LP turbine 9, the C0 2 then passing to the point 28 where it rejoins the C0 2 delivered by the HP compressor 5. A line 50 is provided inter-connecting the liquid CO 2 line downstream of the cooler 12 with the C0 2 line between the HP turbine 7 and the nuclear reactor 8, the line 50 being closable by a valve 51 which is operable byadevice 45 responsive to the gas pressure upstream of the reactor. A device 36 responsive to load it utilised to control the reactor 8.</p> |
