CAJ | 학술논문

以压水堆核主泵静压轴封系统中具有自适应性的接触式机械密封为对象，分别采用热流固耦合混合润滑和流固耦合流体润滑模型，研究了不同工况下密封性能演变规律；提出了具有更好工艺性能的静环组件浮动安装结构并与国外产品采用的镶装结构密封性能进行了比较。自行研制了立式、全尺寸自适应接触式机械密封性能试验系统，获得自适应接触式机械密封在核主泵密封两种典型工作状态下的密封性能，验证了理论分析模型。同时，通过试验验证了静环组件浮动安装结构的可行性与性能，为国产化设计与制造提供了理论和实践基础。
이압수퇴핵주빙정압축봉계통중구유자괄응성적접촉식궤계밀봉위대상，분별채용열류고우합혼합윤활화류고우합류체윤활모형，연구료불동공황하밀봉성능연변규률；제출료구유경호공예성능적정배조건부동안장결구병여국외산품채용적양장결구밀봉성능진행료비교。자행연제료입식、전척촌자괄응접촉식궤계밀봉성능시험계통，획득자괄응접촉식궤계밀봉재핵주빙밀봉량충전형공작상태하적밀봉성능，험증료이론분석모형。동시，통과시험험증료정배조건부동안장결구적가행성여성능，위국산화설계여제조제공료이론화실천기출。
The mechanism of a kind of adaptive contacting mechanical seal which is applied in pressurized water reactor nuclear coolant pumps in different operating conditions is investigated by the hybrid lubrication model coupled with thermal and elastic deformation and elastic hydrodynamic lubrication model. The floating structure of static ring with O-ring is given, and its performance is compared with interferential structure applied in import product. A full-scale vertical experiment rig for adaptive contacting mechanical seal is set up. The seal performance of the adaptive contacting mechanical seal in two statuses is obtained from the experiments which prove the two theoretical models. The feasibility and reliability of floating structure of static ring is verified by the experiments also. These results are beneficial to the domestic design and manufacturing of mechanical seals in nuclear coolant pump.