CAJ | 학술논문

针对超超临界机组高压加热器（简称高加）汽水两侧压差急剧升高后所带来的问题，提出了一种降低汽水两侧压差的方法即将主给水泵的位置由高压加热器进口移动到高压加热器的出口，并以某电厂1000 MW超超临界机组为例，对主给水泵位置变化后所带来的问题进行了研究，并提出了相应的应对措施。研究结果表明，主给水泵位置变化后，高加汽水两侧压差大幅度降低到9．5MPa，并且对主给水泵的启动和运行不会带来影响。
침대초초림계궤조고압가열기（간칭고가）기수량측압차급극승고후소대래적문제，제출료일충강저기수량측압차적방법즉장주급수빙적위치유고압가열기진구이동도고압가열기적출구，병이모전엄1000 MW초초림계궤조위례，대주급수빙위치변화후소대래적문제진행료연구，병제출료상응적응대조시。연구결과표명，주급수빙위치변화후，고가기수량측압차대폭도강저도9．5MPa，병차대주급수빙적계동화운행불회대래영향。
Aiming at the problems bring from the high pressure heater steam pressure difference on both sides of the sharp rise in ultra supercritical unit ,this paper propose a method to reduce the steam pressure difference on both sides .It is that the location of the main feed water pump move from high pressure heater inlet to the outlet of the high pressure heater .And a power plant 1 000 MW ultra supercritical unit , as an example , has conducted the research to bring the main feed water pump position after the change , and puts forward the corresponding countermeasures .The results show that main to the change of the position of the water pump ,high-pressure steam pressure difference on both sides of the greatly reduced to 9.5 MPa.And the main pump start and run will not be to the impact .