Internal leakage analysis and experiment in hydraulic control system of steam turbine inlet valve
| Autor: | Wang Liming, Ying Liu, Xiaoxiao Li, Qimin Wang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Hydraulic control 020901 industrial engineering & automation Materials science Petroleum engineering Steam turbine Mechanical Engineering 020208 electrical & electronic engineering 0202 electrical engineering electronic engineering information engineering Inlet valve 02 engineering and technology Industrial and Manufacturing Engineering Leakage (electronics) |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering. 235:571-581 |
| ISSN: | 2041-3009 0954-4089 |
| DOI: | 10.1177/0954408920973117 |
| Popis: | In this paper, the transformation of steam turbine regulating system from mechanical hydraulic regulation to electro-hydraulic regulation is realized. And the internal leakage mechanism of the hydraulic control switch valve and the electro-hydraulic proportional valve in the system is analyzed. With the use of hydraulic simulation software AMESim, the mathematical model of the electro-hydraulic control system after transforming is established. The parameters of the hydraulic control switch valve and the electro-hydraulic proportional valve in the hydraulic control system of steam turbine inlet valve are studied under different internal leakage locations and different leakage degree, such as piston regulating time, steady position of piston, oil pressure and leakage flow flux. The fault characteristic table of internal leakage is obtained. An experimental platform for simulating internal leakage is built. The experimental curves of several physical quantities under different internal leakage conditions are obtained. The experimental results prove that the internal leakage has a great impact on the performance of the electro-hydraulic control system. The results of internal leakage experiment are consistent with those of internal leakage simulation. |
| Databáze: | OpenAIRE |
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