WO2017149757A1 - Équipement de production d'énergie - Google Patents

Équipement de production d'énergie Download PDF

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Publication number
WO2017149757A1
WO2017149757A1 PCT/JP2016/056795 JP2016056795W WO2017149757A1 WO 2017149757 A1 WO2017149757 A1 WO 2017149757A1 JP 2016056795 W JP2016056795 W JP 2016056795W WO 2017149757 A1 WO2017149757 A1 WO 2017149757A1
Authority
WO
WIPO (PCT)
Prior art keywords
seawater
power generation
facility
water level
intake channel
Prior art date
Application number
PCT/JP2016/056795
Other languages
English (en)
Japanese (ja)
Inventor
泰孝 和田
Original Assignee
中国電力株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国電力株式会社 filed Critical 中国電力株式会社
Priority to PCT/JP2016/056795 priority Critical patent/WO2017149757A1/fr
Priority to JP2017503176A priority patent/JP6123968B1/ja
Publication of WO2017149757A1 publication Critical patent/WO2017149757A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines

Definitions

  • the present invention relates to a power generation facility that uses seawater as cooling water.
  • a power generation facility that uses seawater as cooling water for example, a power generation facility that cools a condenser with seawater is known (see, for example, Patent Document 1).
  • Such a power generation facility takes seawater from the sea, injects it into a circulation pump tank, and supplies the seawater stored in the circulation pump tank to the condenser by the circulation pump.
  • the above power generation equipment has a circulation pump when sea level drops due to low sea tide when seagrass or mussels adhere to the intake pipe for taking in seawater and the flow path narrows and pressure loss increases. There is a problem in that air entrainment from the inlet of the circulation pump or siphon break in the condenser water chamber occurs due to a drop in the water level of the tank, and the equipment may be damaged.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to prevent the entrainment of air from the inlet of the circulation pump and the occurrence of siphon breaks in the condenser water chamber.
  • the present invention provides an intake channel for taking seawater from the sea, A circulation pump for supplying seawater for cooling from the intake channel to the condenser of the power generation facility; A water level meter for measuring the level of seawater at the inlet of the circulation pump; Seawater use equipment of the power generation equipment excluding the condenser, which discharges seawater after use to the intake channel using seawater; and A seawater supply pump for supplying seawater to the seawater use facility; A control device for controlling the seawater supply pump to supply seawater to the intake channel via the seawater use facility when the measured value of the water level meter is smaller than a preset value; It is the power generation equipment characterized by having.
  • the seawater supply pump is controlled by the control device, and the seawater is taken in via the seawater use facility. Therefore, it is possible to prevent the entrainment of air from the inlet of the circulation pump and the occurrence of siphon breaks in the condenser water chamber.
  • Such power generation equipment A plurality of the seawater use facilities are provided, It is desirable to adjust the amount of seawater to be supplied by changing the number of seawater-use facilities that are in operation. According to such a power generation facility, when the measured value of the water level gauge is smaller than a preset value, it is possible to easily adjust the amount of seawater to be supplied simply by changing the number of seawater-use facilities that are operating. Is possible.
  • Such power generation equipment It is good also as adjusting the quantity of the seawater supplied by changing the angle of the blade
  • the seawater use facility is preferably an LNG vaporizer. According to such a power generation facility, it is possible to increase the amount of seawater in the intake channel using an LNG vaporizer provided in the power generation facility without adding a new facility.
  • the seawater use facility may be a shaft cold water cooling facility. According to such a power generation facility, it is possible to increase the amount of seawater in the intake channel using the axial cold water cooling facility provided in the power generation facility without adding a new facility.
  • Such power generation equipment having a water discharge channel for discharging the cooled seawater to the sea, It is desirable that the seawater supply pump supplies seawater in the water discharge channel to the seawater use facility. According to such a power generation facility, it is possible to increase the amount of seawater in the intake channel by returning the seawater used in the condenser and discharged to the discharge channel to the water channel.
  • the seawater supply pump may supply the seawater using facility from a downstream side of a dust remover provided in the intake channel. According to such a power generation facility, since the seawater is drawn from the position near the sea where the pressure loss is small at the downstream side of the dust remover in the intake channel, it is possible to supply more seawater to the intake channel. is there.
  • FIG. 1 is a schematic plan view of a thermal power plant according to a first embodiment of the present invention. It is a block diagram of the thermal power plant concerning a first embodiment of the present invention. It is a schematic plan view of the thermal power plant which concerns on 2nd embodiment of this invention. It is a schematic plan view of the thermal power plant which concerns on 3rd embodiment of this invention.
  • FIG. 1 is a schematic plan view of a thermal power plant according to the first embodiment of the present invention.
  • FIG. 2 is a block diagram of the thermal power plant according to the first embodiment of the present invention. As shown in FIG. 1, the thermal power plant 1 is constructed on a site facing the sea 2.
  • the thermal power plant 1 is provided with various facilities such as a fuel storage facility, a fuel tank, and a power generation facility.
  • the condenser 4 provided in the power generation facility 3 is cooled with seawater.
  • the intake path 5 for taking seawater from the sea 2 and supplying the seawater to the condenser 4 respectively, and the condenser In order to supply seawater to each of the LNG vaporizers 7 branched from the water discharge channel 6, a water discharge channel 6 for discharging seawater passing through 4 to the sea 2, a plurality of LNG vaporizers 7 as seawater use facilities
  • the water discharge branch 8, the seawater supply pump 9 for supplying the seawater of the water discharge path 6 to the water discharge branch 8, and auxiliary equipment such as the axial cold water cooling facility 10 are installed.
  • Seawater is taken in from the intake 5a at the tip of the intake channel 5, flows through the intake channel 5, passes through the condenser 4 and then passes through the discharge channel 6, and is discharged from the discharge port 6a at the tip to the sea 2. Is done. At this time, seawater in the intake channel 5 is temporarily stored in the circulation pump tank 11 and supplied to the condenser 4 by the circulation pump 12.
  • a water level meter 13 that measures the water level of the circulation pump tank 11 at the inlet of the circulation pump 12, and LNG vaporization as seawater using equipment based on the measured value of the water level meter 13.
  • a control device 14a for operating the vessel 7 is provided.
  • the control device 14a is incorporated in, for example, control equipment 14 that controls the thermal power plant 1.
  • Each LNG vaporizer 7 is configured such that seawater in the discharge channel 6 is supplied by the seawater supply pump 9, and the used seawater is discharged upstream from the intake port to the circulation pump tank 11 in the intake channel 5. ing.
  • the thermal power plant 1 stores the seawater taken into the intake channel 5 from the sea 2 into the circulation pump tank 11 through the dust remover 15 and supplies the seawater to the condenser 4 by the circulation pump 12 in the circulation pump tank 11. To cool the condenser 4. At this time, if the water level in the circulation pump tank 11 becomes lower than the minimum water level that satisfies the necessary suction head of the circulation pump 12, there is a risk that air will be trapped from the inlet of the circulation pump 12 or a siphon break in the condenser water chamber. There is. For this reason, in the power generation equipment 3 of the first embodiment, the stopped LNG vaporizer 7 is operated based on the measured value of the water level meter 13 provided in the circulation pump tank 11 by the control device 14a.
  • a predetermined minimum required water level to be maintained as the water level of the circulation pump tank 11 is preset in the control device 14a.
  • the predetermined required minimum water level is a minimum water level that satisfies the required suction head of the circulation pump 12 or a water level that is expected to become the minimum water level.
  • the control device 14 When the measured value of the water level gauge 13 reaches a predetermined minimum required water level, the control device 14 operates the seawater supply pump 9 to pass seawater in the discharge channel 6 through the discharge branch 8 and operates the LNG vaporizer 7. It is set to be. Thereby, in the thermal power plant 1 of the first embodiment, the seawater once supplied to the condenser 4 and reaching the discharge channel 6 is supplied to the circulation pump tank 11 of the intake channel 5 via the LNG vaporizer 7. Supplying upstream from the intake port prevents the water level of the circulation pump tank 11 from becoming lower than the minimum water level.
  • the control device 14a stops the seawater supply pump 9 and stops.
  • the LNG vaporizer 7 is operated, and the seawater in the discharge channel 6 is supplied upstream from the intake port to the circulation pump tank 11 in the intake channel 5 via the LNG vaporizer 7. For this reason, the water level of the circulation pump tank 11 is maintained above a predetermined necessary minimum water level, and damage to the power generation equipment 3 due to entrainment of air from the inlet of the circulation pump 12 or occurrence of a siphon break in the condenser water chamber is prevented. Is possible.
  • the LNG vaporizer 7 that operates when the measured value of the water level gauge 13 is smaller than a predetermined minimum required water level is an existing facility, and for example, the LNG vaporizer that is stopped among the LNG vaporizers 7 provided in a plurality of systems. If the device 7 is operated, it is not necessary to add a new facility, and thus it is possible to prevent damage to the power generation facility 3 while reducing costs. Further, it is possible to easily prevent the power generation equipment 3 from being damaged simply by operating the existing LNG vaporizer 7.
  • the LNG vaporizers 7 provided in a plurality of systems are seawater supplied to the intake channel 5 by operating more LNG vaporizers 7 by the control device 14a as the water level measured by the water level gauge 13 is lower. It is possible to increase the amount of.
  • the amount of seawater supplied to the intake channel 5 via the LNG vaporizer 7 can also be changed by changing the blade angle of the seawater supply pump 9 that supplies seawater to each LNG vaporizer 7 by the control device 14a. It is possible to increase.
  • FIG. 3 is a schematic plan view of a thermal power plant according to the second embodiment of the present invention.
  • the LNG from the intake branch 16 is taken from the intake branch 16 by the seawater supply pump 9 at a position closer to the sea that is downstream of the dust remover 15 in the intake 5 and has a small pressure loss due to the intake 5.
  • Seawater is supplied to the vaporizer 7.
  • seawater is forcibly taken into the intake branch 16 by the seawater supply pump 9 under the control of the control device 14a. For this reason, it is possible to supply more seawater to the circulation pump tank 11 via the LNG vaporizer 7.
  • the control device 14a uses the existing facility. Seawater is supplied to the upstream of the intake port to the circulation pump tank 11 of the intake channel 5 via a certain LNG vaporizer 7, and air is entrained from the inlet of the circulation pump 12 or a siphon break in the condenser water chamber. It is possible to prevent the power generation facility 3 from being damaged due to the occurrence of the above.
  • the seawater supplied to the LNG vaporizer 7 is taken in by the seawater supply pump 9 from a position close to the sea of the intake channel 5 and supplied from the intake branch 16, the LNG regardless of the amount of water in the discharge channel 6. It is possible to supply the vaporizer 7 with a desired amount of seawater.
  • the LNG vaporizer 7 provided in a plurality of systems controls more LNG vaporizers 7 as the water level measured by the water level gauge 13 is lower. It is possible to increase the amount of seawater supplied to the intake channel 5 by operating the device 14a. In addition, the amount of seawater supplied to the intake channel 5 via the LNG vaporizer 7 can also be changed by changing the blade angle of the seawater supply pump 9 that supplies seawater to each LNG vaporizer 7 by the control device 14a. It is possible to increase.
  • FIG. 4 is a schematic plan view of a thermal power plant according to the third embodiment of the present invention.
  • the thermal power plant 1 according to the third embodiment is a thermal power plant that uses seawater to supply seawater to the intake channel 5 when the measured value of the water level gauge 13 is smaller than a predetermined minimum required water level. 1 is used.
  • seawater is supplied from the intake branch 16 to the axial cold water cooling facility 10 by the seawater supply pump 9 at a position closer to the sea where the pressure loss due to the intake 5 is small.
  • the seawater supply pump 9 since seawater is forcibly taken into the intake branch 16 by the seawater supply pump 9 under the control of the control device 14a, more seawater is supplied to the circulation pump tank 11 via the axial cold water cooling facility 10. It is possible to supply.
  • the control device 14a when the measurement value obtained by measuring the water level of the circulation pump tank 11 with the water level meter 13 is smaller than the predetermined required minimum water level, the control device 14a causes the axial cold water cooling facility 10 to be changed. Since the seawater is supplied to the circulation pump tank 1 via, it is possible to prevent the power generation equipment 3 from being damaged.
  • the shaft cold water cooling facility 10 that operates when the measured value of the water level gauge 13 is smaller than the predetermined minimum required water level is an existing facility, so there is no need to add new facilities. For this reason, it is possible to suppress cost and to prevent the power generation equipment 3 from being damaged. Further, it is possible to easily prevent the power generation equipment 3 from being damaged simply by operating the existing shaft cold water cooling equipment 10.
  • the axial cold water cooling facility 10 taken water by operating more axial cold water cooling facilities 10 with the control device 14a as the water level measured by the water level gauge 13 is lower. It is possible to increase the amount of seawater supplied to the path 5.
  • the seawater supply pump 9 that supplies seawater to each axial chilled water cooling facility 10 also changes the angle of the blades provided by the control device 14a, so that the seawater supplied to the intake channel 5 via the axial chilled water cooling facility 10 It is possible to increase the amount.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Équipement de production d'énergie comprenant : un canal d'admission d'eau permettant d'aspirer l'eau e mer de la mer ; une pompe de circulation pour apporter de l'eau de mer de refroidissement depuis le canal d'admission d'eau jusqu'à un condenseur de l'équipement de production d'énergie ; une jauge d'eau destinée à mesurer le niveau d'eau de mer au niveau de l'entrée de la pompe de circulation ; un équipement d'utilisation d'eau de mer de l'équipement de production d'énergie à l'exclusion du condenseur, l'équipement d'utilisation d'eau de mer utilisant l'eau de mer et rejetant l'eau de mer usagée dans le canal d'admission d'eau ; une pompe d'alimentation en eau de mer pour apporter de l'eau de mer à l'équipement d'utilisation d'eau de mer ; et un dispositif de commande pour commander la pompe d'alimentation en eau de mer de telle sorte que l'eau de mer est apportée dans le canal d'admission d'eau par le biais de l'équipement d'utilisation d'eau de mer lorsque la valeur mesurée de la jauge d'eau est inférieure à une valeur prédéfinie.
PCT/JP2016/056795 2016-03-04 2016-03-04 Équipement de production d'énergie WO2017149757A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2016/056795 WO2017149757A1 (fr) 2016-03-04 2016-03-04 Équipement de production d'énergie
JP2017503176A JP6123968B1 (ja) 2016-03-04 2016-03-04 発電設備

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/056795 WO2017149757A1 (fr) 2016-03-04 2016-03-04 Équipement de production d'énergie

Publications (1)

Publication Number Publication Date
WO2017149757A1 true WO2017149757A1 (fr) 2017-09-08

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Application Number Title Priority Date Filing Date
PCT/JP2016/056795 WO2017149757A1 (fr) 2016-03-04 2016-03-04 Équipement de production d'énergie

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JP (1) JP6123968B1 (fr)
WO (1) WO2017149757A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50157745A (fr) * 1973-07-25 1975-12-19
JPS58206812A (ja) * 1982-05-28 1983-12-02 Mitsubishi Heavy Ind Ltd 蒸気タ−ビン排気真空調整装置
JP2005098240A (ja) * 2003-09-25 2005-04-14 Tokyo Electric Power Co Inc:The 発電システム
JP2007032901A (ja) * 2005-07-26 2007-02-08 Chugoku Electric Power Co Inc:The 復水器の冷却水取水量制御方法及びそのシステム
JP2008261316A (ja) * 2007-04-13 2008-10-30 Chugoku Electric Power Co Inc:The 復水熱交換システムおよび復水熱交換器の制御方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0682178A (ja) * 1992-09-01 1994-03-22 Toshiba Corp 循環水系統設備
JP2001116880A (ja) * 1999-10-20 2001-04-27 Hitachi Ltd プラントの海水取水設備
JP5184211B2 (ja) * 2008-05-23 2013-04-17 株式会社日立製作所 復水器及び発電設備
JP2011140815A (ja) * 2010-01-07 2011-07-21 Chugoku Electric Power Co Inc:The 取水放水設備
JP2013178005A (ja) * 2012-02-28 2013-09-09 Chugoku Electric Power Co Inc:The Ｌｎｇ気化装置
JP6184878B2 (ja) * 2014-01-09 2017-08-23 三菱日立パワーシステムズ株式会社 原子力発電プラントの取水設備及び方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50157745A (fr) * 1973-07-25 1975-12-19
JPS58206812A (ja) * 1982-05-28 1983-12-02 Mitsubishi Heavy Ind Ltd 蒸気タ−ビン排気真空調整装置
JP2005098240A (ja) * 2003-09-25 2005-04-14 Tokyo Electric Power Co Inc:The 発電システム
JP2007032901A (ja) * 2005-07-26 2007-02-08 Chugoku Electric Power Co Inc:The 復水器の冷却水取水量制御方法及びそのシステム
JP2008261316A (ja) * 2007-04-13 2008-10-30 Chugoku Electric Power Co Inc:The 復水熱交換システムおよび復水熱交換器の制御方法

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JPWO2017149757A1 (ja) 2018-03-08
JP6123968B1 (ja) 2017-05-10

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