A MONITORING AND EVALUATION METHOD ON THE START-UP PERFORMANCE OF EMERGENCY DIESEL ENGINE
Emergency diesel engine is the last safety barrier for nuclear power plants. Nuclear safety criteria require that it can start up to rated speed（ such as 1 500 r/min） within 10 seconds in an emergency and have loading conditions,so its startup performance is particularly important. During the start-...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2020-01-01
|
| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.01.003 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841535759785394176 |
|---|---|
| author | WANG Guan ZHANG JinJie MAO ZhiWei JIANG ZhiNong |
| author_facet | WANG Guan ZHANG JinJie MAO ZhiWei JIANG ZhiNong |
| author_sort | WANG Guan |
| collection | DOAJ |
| description | Emergency diesel engine is the last safety barrier for nuclear power plants. Nuclear safety criteria require that it can start up to rated speed（ such as 1 500 r/min） within 10 seconds in an emergency and have loading conditions,so its startup performance is particularly important. During the start-up process,the power of high-pressure air is a key factor for success.In this paper,a vibration-based method by analyzing high-pressure air（ domestic units are generally 40 bar·g） power to evaluate starting performance is presented. The large amount of monitoring data obtained indicates that high-pressure air is rapidly charged into the cylinder to generate high-frequency（ approximately 11 kHz） gas exciting impact,and the impact phase will continue to shift backward with increasing speed. Firstly,the Teager energy operator and an adaptive threshold impact location method were used to automatically capture the high pressure gas impact area of each cylinder in each cycle of the start-up phase. Secondly,the energy of the local impact envelope was extracted to characterize the function of the high-pressure air. Finally,the gray evaluation method carried out a comprehensive assessment. The actual test result verifies the effectiveness of this method and has the value of popularization and application. |
| format | Article |
| id | doaj-art-249eb31a09354da187f4981168e4290d |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-249eb31a09354da187f4981168e4290d2025-01-15T02:28:25ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692020-01-0142152030606738A MONITORING AND EVALUATION METHOD ON THE START-UP PERFORMANCE OF EMERGENCY DIESEL ENGINEWANG GuanZHANG JinJieMAO ZhiWeiJIANG ZhiNongEmergency diesel engine is the last safety barrier for nuclear power plants. Nuclear safety criteria require that it can start up to rated speed（ such as 1 500 r/min） within 10 seconds in an emergency and have loading conditions,so its startup performance is particularly important. During the start-up process,the power of high-pressure air is a key factor for success.In this paper,a vibration-based method by analyzing high-pressure air（ domestic units are generally 40 bar·g） power to evaluate starting performance is presented. The large amount of monitoring data obtained indicates that high-pressure air is rapidly charged into the cylinder to generate high-frequency（ approximately 11 kHz） gas exciting impact,and the impact phase will continue to shift backward with increasing speed. Firstly,the Teager energy operator and an adaptive threshold impact location method were used to automatically capture the high pressure gas impact area of each cylinder in each cycle of the start-up phase. Secondly,the energy of the local impact envelope was extracted to characterize the function of the high-pressure air. Finally,the gray evaluation method carried out a comprehensive assessment. The actual test result verifies the effectiveness of this method and has the value of popularization and application.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.01.003Emergency diesel engineStarting performanceMonitoring and evaluationVibration and shock |
| spellingShingle | WANG Guan ZHANG JinJie MAO ZhiWei JIANG ZhiNong A MONITORING AND EVALUATION METHOD ON THE START-UP PERFORMANCE OF EMERGENCY DIESEL ENGINE Jixie qiangdu Emergency diesel engine Starting performance Monitoring and evaluation Vibration and shock |
| title | A MONITORING AND EVALUATION METHOD ON THE START-UP PERFORMANCE OF EMERGENCY DIESEL ENGINE |
| title_full | A MONITORING AND EVALUATION METHOD ON THE START-UP PERFORMANCE OF EMERGENCY DIESEL ENGINE |
| title_fullStr | A MONITORING AND EVALUATION METHOD ON THE START-UP PERFORMANCE OF EMERGENCY DIESEL ENGINE |
| title_full_unstemmed | A MONITORING AND EVALUATION METHOD ON THE START-UP PERFORMANCE OF EMERGENCY DIESEL ENGINE |
| title_short | A MONITORING AND EVALUATION METHOD ON THE START-UP PERFORMANCE OF EMERGENCY DIESEL ENGINE |
| title_sort | monitoring and evaluation method on the start up performance of emergency diesel engine |
| topic | Emergency diesel engine Starting performance Monitoring and evaluation Vibration and shock |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.01.003 |
| work_keys_str_mv | AT wangguan amonitoringandevaluationmethodonthestartupperformanceofemergencydieselengine AT zhangjinjie amonitoringandevaluationmethodonthestartupperformanceofemergencydieselengine AT maozhiwei amonitoringandevaluationmethodonthestartupperformanceofemergencydieselengine AT jiangzhinong amonitoringandevaluationmethodonthestartupperformanceofemergencydieselengine AT wangguan monitoringandevaluationmethodonthestartupperformanceofemergencydieselengine AT zhangjinjie monitoringandevaluationmethodonthestartupperformanceofemergencydieselengine AT maozhiwei monitoringandevaluationmethodonthestartupperformanceofemergencydieselengine AT jiangzhinong monitoringandevaluationmethodonthestartupperformanceofemergencydieselengine |