Claims
- 1. A condenser condensing steam flowed therein from a turbine and supplying the condensed condensate into a feed water system leading to a steam generator,wherein said condenser comprises a steam condensing zone having a heat exchanger tube bundle and condensing steam, a hot well zone partitioned from said steam condensing zone, a condensate communicating portion introducing the condensate condensed in said steam condensing zone to said hot well zone and a condensate outlet portion leading the condensate stayed in said hot well zone from said condenser to said feed water system, a first detecting means for detecting the quality of condensate is provided in said condensate communicating portion introducing the condensed condensate from said steam condensing zone to said hot well zone or in the vicinity of said condensate communicating portion and a second detecting means for detecting the quality of condensate is provided at said condensate outlet portion leading the condensate stayed in said steam condensing zone from said condenser to said feed water system or in the vicinity of said condensate outlet portion, a control valve adjusting supply of the condensate to be supplied from said condenser to said feed water system on the basis of a difference between water quality detection values of the condensate detected by said first and second detecting means is provided on said feed water system, and a make-up water system supplying make-up water to said feed water system on the downstream side of said control valve is provided.
- 2. A condenser condensing steam flowed therein from a turbine and supplying the condensed condensate into a feed water system leading to a steam generator,wherein said condenser comprises a steam condensing zone having a heat exchanger tube bundle and condensing steam, a hot well zone partitioned from said steam condensing zone, a condensate communicating portion introducing the condensate condensed in said steam condensing zone to said hot well zone and a condensate outlet portion leading the condensate stayed in said hot well from said condenser to said feed water system, a first detecting means for detecting the quality of condensate is provided in said condensate communicating portion introducing the condensed condensate from said steam condensing zone to said hot well zone or in the vicinity of said condensate communicating portion and a second detecting means for detecting the quality of condensate is provided at said condensate outlet portion leading the condensate stayed in said steam condensing zone from said condenser to said feed water system or in the vicinity of said condensate outlet portion, and a chemical injecting system supplying chemical dilution water into said feed water system on the basis of a difference between water quality detection values detected by said first and second detecting means is provided.
- 3. A condenser condensing steam flowed therein from a turbine and supplying the condensed condensate into a feed water system leading to a steam generator,wherein said condenser comprises a steam condensing chamber having a heat exchanger tube bundle and condensing steam, a hot well chamber partitioned from said steam condensing chamber, a condensate communicating portion introducing the condensate condensed in said steam condensing chamber to said hot well chamber and a condensate outlet portion leading the condensate stayed in said hot well chamber from said condenser to said feed water system, a first detecting means for detecting the quality of condensate is provided in said condensate communicating portion introducing the condensed condensate from said steam condensing chamber to said hot well chamber or in the vicinity of said condensate communicating portion and a second detecting means for detecting the quality of condensate is provided at said condensate outlet portion leading the condensate stayed in said steam condensing chamber from said condenser to said feed water system or in the vicinity of said condensate outlet portion, a control valve adjusting supply of the condensate to be supplied from said condenser to said feed water system on the basis of a difference between water quality detection values of the condensate detected by said first and second detecting means is provided on said feed water system, and a make-up water system supplying make-up water to said feed water system on the downstream side of said control valve is provided.
- 4. A condenser condensing steam flowed therein from a turbine and supplying the condensed condensate into a feed water system leading to a steam generator,wherein said condenser comprises a steam condensing zone having a heat exchanger tube bundle and condensing steam, a hot well zone partitioned from said steam condensing zone, a condensate communicating zone introducing the condensate condensed in said steam condensing zone to said hot well zone and a condensate outlet portion leading the condensate stayed in said hot well zone from said condenser to said feed water system, a first detecting means for detecting the quality of condensate is provided in said condensate communicating portion introducing the condensed condensate from said steam condensing zone to said hot well zone or in the vicinity of said condensate communicating portion and a second detecting means for detecting the quality of condensate is provided at said condensate outlet portion leading the condensate stayed in said steam condensing zone from said condenser to said feed water system or in the vicinity of said condensate outlet portion, and a chemical injecting system supplying chemical dilution water into said feed water system on the basis of a difference between water quality detection values detected by said first and second detecting means is provided.
- 5. A method of operating a power plant equipment comprising a steam generator generating steam, a steam turbine driven by the steam generated in said steam generator, a condenser condensing the steam exhausted from said steam turbine into condensate, and a feed water system supplying the condensate to said steam generator,wherein said method comprises the steps: detecting the water quality of condensate at a plurality of detecting points in a hot well zone allowing the condensate condensed inside said condenser to stay, judging sea water leakage on the basis of detection values of water quality detected at the plurality of detecting points, adjusting supply of the condensate to be supplied from said condenser to said feed water system by operating a control valve arranged in said feed water system when judged to be sea water leakage, and supplying make-up water to said feed water system from a make-up water system communicating with said feed water system on the downstream side of said control valve.
- 6. A method of operating a power plant equipment comprising a steam generator generating steam, a steam turbine driven by the steam generated in said steam generator, a condenser condensing the steam exhausted from said steam turbine into condensate, and a feed water system supplying the condensate to said steam generator,wherein said method comprises the steps: detecting the water quality of condensate at a plurality of detecting points in a hot well zone allowing the condensate condensed inside said condenser to stay, judging sea water leakage on the basis of detection values of water quality detected at the plurality of detecting points, and supplying chemical dilution water to said feed water system when sea water leakage is judged.
- 7. A method of operating a power plant equipment comprising a steam generator generating steam, a steam turbine driven by the steam generated in said steam generator, a condenser condensing the steam exhausted from said steam turbine into condensate, and a feed water system supplying the condensate to said steam generator,wherein said method comprises the steps: detecting the water quality of condensate at a plurality of detecting points in a hot well zone allowing the condensate condensed inside said condenser to stay, judging sea water leakage on the basis of detection values of water quality detected at the plurality of detecting points, adjusting supply of the condensate to be supplied from said condenser to said feed water system by operating a control valve arranged in said feed water system when judged to be sea water leakage, supplying make-up water to said feed water system from a make-up water system communicating with said feed water system on the downstream side of said control valve, and supplying chemical dilution water into said feed water system.
- 8. A method of operating a power plant equipment according to claim 5, wherein the condensate mixed with sea water is discharged out of said feed water system in a middle flow course from said condenser to said steam generator when judged to be sea water leakage.
- 9. A method of operating a power plant equipment according to claim 5, wherein said method comprises:detecting water quality of condensate at separate detecting points in a course from an upstream side of a hot well zone allowing the condensate condensed inside said condenser to stay to a downstream side of said hot well zone from which the condensate flows out into said feed water system, and comparing respective water quality values detected at said detecting points, and judging sea water leakage when a water quality detection value detected at said detecting points on the upstream side represents to be lower in water quality than a water quality detection value detected at said detecting points on the downstream side.
- 10. A method of operating a power plant equipment according to claim 9, wherein said method comprises:detecting water quality of condensate at separate detecting points in a course from an upstream side of a hot well zone allowing the condensate condensed inside said condenser to stay to a downstream side of said hot well zone from which the condensate flows out into said feed water system, and comparing respective water quality values detected at said detecting points, and judging sea water leakage when a water quality detection value detected at said detecting points on the upstream side represents to be lower in water quality than a water quality detection value detected at said detecting points on the downstream side.
- 11. A method of operating a power plant equipment according to claim 9, wherein said method comprises:detecting water quality of condensate at separate detecting points in a course from an upstream side of a hot well zone allowing the condensate condensed inside said condenser to stay to a downstream side of said hot well zone from which the condensate flows out into said feed water system, and judging sea water leakage when a difference between respective water quality detection values detected at said detecting points exceeds a prescribed value.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-135377 |
May 1999 |
JP |
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Parent Case Info
This is a divisional application of U.S. Ser. No. 09/570,462, filed May 12, 2000.
US Referenced Citations (8)
Foreign Referenced Citations (5)
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DE |
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JP |
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JP |
6-11406 |
Jan 1994 |
JP |
06 011406 |
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JP |
Non-Patent Literature Citations (1)
Entry |
Journal of Nuclear Science and Technology, “Structural material anomaly detection system using water chemistry data”, Aug. 31, 1990, pp. 731-742, XP002192720. |