TURBO-MACHINE DEPLOYMENT OF HTR-10GT

摘要

As a testing project of gas turbine modular High Temperature Gas-cooled Reactor (HTGR), HTR-10GT hasbeen studied and developed by Institute of Nuclear and New Energy Technology (INET) of Tsinghua Universityafter the success of HTR-10 with steam turbine cycle. The main purposes of this project are to demonstrate thegas turbine modular HTGR, to optimize the deployment of Power Conversion Unit (PCU) and to verify thetechniques of turbo-machine, operating modes and controlling measures. HTR-10GT is concentrated on thePCU design and the turbo-machine deployment. Possible turbo-machine deployments have been investigatedand two of them are introduced in this paper. The preliminary design for the turbo-machine of HTR-10GT issingle-shaft of vertical layout, arranged by the side of the reactor and the turbo-compressor rotary speed wasselected to be 250 s-1 (15000r/min) by considering the efficiency of turbo-compressor blade systems, the strengthconditions and the mass and size characteristics of the turbo-compressor. The rotor system will be supported byelectromagnetic bearings (EMBs) to curb the possible pollutions of the primary loop. Of all the components inthis design, the high speed turbo-generator seems to be a world-wide technical nut. As an alternative design, agearbox complex is used to reduce the rotary speed from the turbo-compressor 250 s-1 to 50 s-1 so that theordinary generator can be used.