摘要
膜片式气动逻辑元件作为防喘保护装置是涡轮增压机组中执行压气机喘振保护和汽轮机超速保护功能的关键元件。阐述了防喘保护装置的结构和工作原理,针对防喘保护装置的响应特性、工作特性、压差流量特性等试验项目,给出了详细的试验原理、试验方法和试验结果。试验结果表明:防喘保护装置的响应时间为250ms,工作特性线与标准特性线一致,实际阀口压差流量特性曲线与理论特性趋势一致,所有特性试验具有良好的稳定性和重复性。
The membrane-type pneumatic logic element under discussion is a key item in a turbocharged unit for compressor surge control and steam turbine overspeed protection.The authors have described the structure and working principle of the surge protection device.Regarding various test items,such as the response characteristics,working characteristics and pressure difference flow characteristics of the surge protection device,a detailed description was given of the test principles,methods and processes.The test results show that the response time of the surge protection device is 250 ms,the working characteristic curves agree well with the standard ones,and the actual pressure-difference flow characteristic curves at the outlet of the valve assume a variation tendency identical with that of the theoretical ones.All the characteristic tests display a good stability and repeatability.
出处
《热能动力工程》
CAS
CSCD
北大核心
2009年第3期309-312,408,共4页
Journal of Engineering for Thermal Energy and Power
关键词
膜片式气动逻辑元件
防喘保护装置
特性试验
membrane type pneumatic logic element,surge protection device,characteristic test
