CAJ | 학술논문

机组运行期间，加热器发生泄漏被迫在线解列检修时，在不改变高压加热器热力系统的基础上，将汽轮机快冷装置加热后的压缩空气引入高压加热器，通过控制快冷装置出口压缩空气温度，对加热器进行快速冷却。使用该技术可以在较短时间内降低加热器金属温度，缩短加热器冷却及抢修时间，使加热器可快速恢复使用。由于加热器快冷技术的使用，加热器冷却过程中的金属内外壁温降速度均匀\温差小，保证加热器金属特性，并避免因加热器冷却不当造成的加热器损坏。
궤조운행기간，가열기발생설루피박재선해렬검수시，재불개변고압가열기열력계통적기출상，장기륜궤쾌랭장치가열후적압축공기인입고압가열기，통과공제쾌랭장치출구압축공기온도，대가열기진행쾌속냉각。사용해기술가이재교단시간내강저가열기금속온도，축단가열기냉각급창수시간，사가열기가쾌속회복사용。유우가열기쾌랭기술적사용，가열기냉각과정중적금속내외벽온강속도균균\온차소，보증가열기금속특성，병피면인가열기냉각불당조성적가열기손배。
During units operation, the heater has to be disconnected for online maintenance due to leakage. On the basis of not changing thermal system of high-pressure heater, the compressed air heated by fast cool-ing device is introduced into high-pressure heater. By temperature control of compressed air from outlet of fast cooling device, the heater is cooled fast. The technology can be used to decrease metal temperature of heater in short time and reduce the time of heater cooling and maintenance so that the heater can be resumed soon-er. With the fast cooling technology of heater, temperature of internal metal wall and external wall of heater decreases equally with little differences, which therefore ensures metal property of heater and prevents heater damage due to inappropriate cooling.