发明名称 |
STEAM SYSTEM, AND ITS CONTROL SYSTEM AND CONTROL METHOD |
摘要 |
A steam system control method applied to a steam system including: a low-pressure header storing low-pressure steam; a high-pressure header storing high-pressure header; a steam turbine connected between them; and a turbine bypass line introducing controlled amount of steam from the high-pressure header to the low-pressure header by bypassing the steam turbine. The low-pressure header has a blow-off valve for discharging excessive steam to the outside. The steam system control method includes: a normal time blow-off valve control step of PI controlling the opening of the blow-off valve; and a trip time blow-off control step of controlling the opening of the blow-off valve by changing the MV value to a predetermined trip time opening set value when the turbine is tripped. According to this method, the opening of the blow-off valve is controlled based on the predetermined MV value when the turbine trips and excessive steam flows into the bypass, so that excessive steam flows into the low-pressure header is quickly discharged to the outside. Stable operation can be achieved even when a turbine trips. |
申请公布号 |
EP2060752(A4) |
申请公布日期 |
2010.04.07 |
申请号 |
EP20080711297 |
申请日期 |
2008.02.14 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
TAKESHITA, KAZUKO;KOUNO, SUSUMU;HIRAYAMA, HARUAKI;ISHIBASHI, NAOHIKO;NAKAGAWA, YOSUKE |
分类号 |
F01K7/38;F01D21/00;F01D21/16;F01D21/20;F01K1/18;F01K13/02 |
主分类号 |
F01K7/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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