JP4550677B2

JP4550677B2 - High humidity gas turbine equipment and operation method thereof

Info

Publication number: JP4550677B2
Application number: JP2005197087A
Authority: JP
Inventors: 新喜田; 守昭塚本; 幸徳片桐
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2005-07-06
Filing date: 2005-07-06
Publication date: 2010-09-22
Anticipated expiration: 2025-07-06
Also published as: JP2007016639A

Description

本発明は、燃焼用空気を加湿して供給することで出力及び効率の向上を図る高湿分ガスタービン設備及びその運転方法に関する。 The present invention relates to a high-humidity gas turbine facility that improves the output and efficiency by humidifying and supplying combustion air and an operation method thereof.

ガスタービン設備の燃焼器に燃料と共に供給する燃焼用空気に水分を加えて加湿し、それにより出力及び効率の向上を図る高湿分ガスタービン設備は、例えば、特許文献１に開示されているように、既に提案されている。 For example, Patent Document 1 discloses a high-humidity gas turbine facility that adds moisture to the combustion air supplied to the combustor of the gas turbine facility and humidifies it, thereby improving output and efficiency. Has already been proposed.

この種、高湿分ガスタービン設備は、他のガスタービン設備に比べて高効率であることや、ガスエンジンやディーゼルエンジンに比べて窒素酸化物などの排出量を低くできることから、工場向け小規模発電設備や熱電供給設備としての利用が期待されている。 This type of high-humidity gas turbine equipment is more efficient than other gas turbine equipment, and can reduce emissions of nitrogen oxides, etc., compared to gas engines and diesel engines. It is expected to be used as a power generation facility or thermoelectric supply facility.

特開２００３−３８６１号公報JP 2003-3861 A

一般的に、高湿分ガスタービン設備は、設備全体の温度，圧力，燃焼ガス流量，燃焼用空気の湿度等の変動をなくして燃焼ガスの排気温度を安定させるために、増湿塔起動停止時における燃焼用空気への加湿量の制御が重要な課題となっている。 Generally, high-humidity gas turbine equipment starts and stops the humidification tower to stabilize the exhaust temperature of the combustion gas by eliminating fluctuations in the temperature, pressure, combustion gas flow rate, humidity of combustion air, etc. Control of the amount of humidification to the combustion air at times is an important issue.

即ち、ガスタービンから排出される排気ガスの排気温度を利用して増湿塔への給水を予熱する場合、前記排気温度は、各種条件によって変動し易いので、それによって増湿塔への給水温度も変動してしまう。この増湿塔への給水温度の変動は、燃焼用空気への加湿量を変動させることになり、特に、増湿塔の起動停止時に燃焼用空気への加湿量が急変し易く、高湿分ガスタービン設備が安定に運転するまで長時間を要している。そのために、燃焼用空気の加湿量の急変を抑制して高湿分ガスタービン設備の運転を早期に安定させることが望まれている。 That is, when preheating the water supply to the humidification tower using the exhaust temperature of the exhaust gas discharged from the gas turbine, the exhaust temperature is likely to fluctuate depending on various conditions. Will also fluctuate. This fluctuation in the feed water temperature to the humidification tower causes the humidification amount to the combustion air to fluctuate.In particular, the humidification amount to the combustion air is likely to change suddenly when the humidification tower starts and stops. It takes a long time for the gas turbine equipment to operate stably. Therefore, it is desired to stabilize the operation of the high-humidity gas turbine facility at an early stage by suppressing a sudden change in the humidification amount of the combustion air.

しかしながら、上記特許文献１に記載の高湿分ガスタービン設備は、増湿塔内に供給する空気量と給水量を制御して燃焼用空気の加湿量を調整しているが、増湿塔の起動停止の際に生じる燃焼用空気の加湿量が変動についての配慮はなされていない。 However, the high-humidity gas turbine facility described in Patent Document 1 adjusts the humidification amount of combustion air by controlling the amount of air and the amount of water supplied into the humidification tower. No consideration is given to fluctuations in the amount of humidification of the combustion air that occurs when starting and stopping.

本発明の目的は、増湿塔の起動停止時における燃焼用空気への加湿量の急変を抑制して短時間に安定した運転を行える高湿分ガスタービン設備を提供することにある。 An object of the present invention is to provide a high-humidity gas turbine facility that can suppress a sudden change in the amount of humidification to combustion air when the humidification tower is started and stopped, and can perform stable operation in a short time.

本発明は上記目的を達成するために、増湿塔に給水する時に、言い換えれば増湿塔の起動時に、給水温度を測定する温度測定手段と、この温度測定手段による測定温度が所定温度になるまで前記増湿塔への給水量を制限する給水量調節弁と、所定温度になった給水を徐々に前記増湿塔へ供給する弁手段とを設けたのである。 In order to achieve the above object, according to the present invention, when water is supplied to the humidifying tower, in other words, when the humidifying tower is started, temperature measuring means for measuring the temperature of the feed water, and the temperature measured by the temperature measuring means becomes a predetermined temperature. A water supply amount adjusting valve for limiting the amount of water supplied to the humidification tower and a valve means for gradually supplying the water supply at a predetermined temperature to the humidification tower are provided.

上記構成とすることで、所望温度になった給水を増湿塔へ徐々に供給するようにしたので、燃焼用空気への加湿量も徐々に変化して所望量になる。その結果、燃焼用空気への加湿量の急変がなくなって燃焼ガスの排気温度も短時間で安定するので、高湿分ガスタービン設備の運転を短時間で安定させることができるのである。 By adopting the above configuration, the feed water at a desired temperature is gradually supplied to the humidification tower, so that the humidification amount to the combustion air also gradually changes to a desired amount. As a result, the humidification amount to the combustion air is not suddenly changed and the exhaust temperature of the combustion gas is stabilized in a short time, so that the operation of the high-humidity gas turbine equipment can be stabilized in a short time.

即ち、増湿塔への給水温度の制御と給水量の制御を行うことで、燃焼用空気への加湿量を間接的に制御することが可能となり、増湿塔を含む高湿分ガスタービン設備を安定に制御することが可能となるのである。 That is, by controlling the feed water temperature and the feed water amount to the humidification tower, it becomes possible to indirectly control the humidification amount to the combustion air, and the high-humidity gas turbine equipment including the humidification tower Therefore, it is possible to stably control.

以上説明したように本発明によれば、増湿塔の起動停止時における燃焼用空気への加湿量の急変を抑制することができるので、短時間に運転を安定化できる高湿分ガスタービン設備を得ることができる。 As described above, according to the present invention, it is possible to suppress a sudden change in the amount of humidification to the combustion air when the humidifying tower is started and stopped, so that the high-humidity gas turbine equipment that can stabilize the operation in a short time Can be obtained.

以下、本発明による高湿分ガスタービン設備の第１の実施の形態を、図１に示す高湿分ガスタービン発電設備に基づいて説明する。 Hereinafter, a first embodiment of a high-humidity gas turbine facility according to the present invention will be described based on the high-humidity gas turbine power generation facility shown in FIG.

高湿分ガスタービン発電設備１Ａは、空気を圧縮する圧縮機２と、この圧縮機２と同軸のガスタービン３及び発電機４とを有している。前記圧縮機２は、配管５によって空気冷却器６を経由して密封された増湿塔７の液面の上方に連結されている。増湿塔７内には、水を付着させ空気を通過させる充填物８が内蔵されており、この増湿塔７の上部には、配管９が接続されており、この配管９は再生熱交換器１０を経由して配管１１に接続されている。そして配管１１は、燃焼器１２に連結され、燃焼器１２は燃焼ガスを前記ガスタービン３の入口に供給するように構成されている。尚、燃焼器１２には、燃料ポンプ１３と燃料流量調節弁１４を介して燃料が供給される。 The high-humidity gas turbine power generation facility 1 </ b> A includes a compressor 2 that compresses air, and a gas turbine 3 and a generator 4 that are coaxial with the compressor 2. The compressor 2 is connected to the upper side of the liquid level of a humidification tower 7 sealed by a pipe 5 via an air cooler 6. In the humidification tower 7, a packing 8 for adhering water and allowing air to pass is built in, and a pipe 9 is connected to the top of the humidification tower 7, and this pipe 9 is used for regenerative heat exchange. It is connected to the pipe 11 via the vessel 10. The pipe 11 is connected to a combustor 12, and the combustor 12 is configured to supply combustion gas to the inlet of the gas turbine 3. Fuel is supplied to the combustor 12 via a fuel pump 13 and a fuel flow rate control valve 14.

また、ガスタービン３の出口は、配管１５によって前記再生熱交換器１０を経由して給水加熱器１６に接続されており、給水加熱器１６は、煙道１７によって水回収装置１８に接続されている。そして、水回収装置１８は煙突１９に接続されている。 The outlet of the gas turbine 3 is connected to the feed water heater 16 via the regenerative heat exchanger 10 by the pipe 15, and the feed water heater 16 is connected to the water recovery device 18 by the flue 17. Yes. The water recovery device 18 is connected to the chimney 19.

前記増湿塔７の底部には、給水ポンプ２０を介して配管２１，２２が接続されている。配管２１は、前記空気冷却器６及び流量調節弁２３を経由して三方切替え弁２４に至り、三方切替え弁２４からは配管２５と配管２６とが分岐されている。一方、配管２２は、前記給水加熱器１６及び流量調節弁２６を経由して三方切替え弁２７に至り、三方切替え弁２７からは配管２８と配管２９とが分岐されている。前記配管２５，２８は混合器３０で一緒になって前記増湿塔７に接続され、増湿塔７の内部の上方で給水を噴霧するようにしている。 Pipes 21 and 22 are connected to the bottom of the humidification tower 7 via a water supply pump 20. The pipe 21 reaches the three-way switching valve 24 via the air cooler 6 and the flow rate control valve 23, and a pipe 25 and a pipe 26 are branched from the three-way switching valve 24. On the other hand, the piping 22 reaches the three-way switching valve 27 via the feed water heater 16 and the flow rate control valve 26, and the piping 28 and the piping 29 are branched from the three-way switching valve 27. The pipes 25 and 28 are connected together by the mixer 30 and connected to the humidification tower 7 so that the feed water is sprayed above the inside of the humidification tower 7.

前記水回収装置１８は、回収した水を低部から水噴霧ポンプ３１で冷却器３２に送って冷却し、上部から噴霧する配管３３を有している。前記水回収装置１８に前記配管２９の下流側が接続される。さらに、前記水回収装置１８の底部には、水を供給するポンプ３４が接続されると共に、前記増湿塔７の底部に水を供給するポンプ３５及び流量調節弁３６を備えた配管３７が接続されている。 The water recovery device 18 has a pipe 33 that cools the recovered water by sending it to the cooler 32 from the lower part with a water spray pump 31 and sprays it from the upper part. A downstream side of the pipe 29 is connected to the water recovery device 18. Furthermore, a pump 34 for supplying water is connected to the bottom of the water recovery device 18, and a pipe 37 having a pump 35 for supplying water and a flow rate adjusting valve 36 to the bottom of the humidifying tower 7 is connected. Has been.

尚、前記ガスタービン３の出口側には温度測定手段Ｔ１が、流量調節弁２６及び流量調節弁２３の上流側にはそれぞれ温度測定手段Ｔ２，Ｔ３が設けられている。 Temperature measuring means T1 is provided on the outlet side of the gas turbine 3, and temperature measuring means T2 and T3 are provided on the upstream side of the flow control valve 26 and the flow control valve 23, respectively.

次に、以上のように構成した高湿分ガスタービン発電設備１Ａの運転を説明する。 Next, the operation of the high-humidity gas turbine power generation facility 1A configured as described above will be described.

まず、取入れた空気ａを圧縮機２で加圧昇温させて圧縮空気ｂを生成し、生成された圧縮空気ｂを配管５に吐出して空気冷却器６で冷却した後、増湿塔７に導入する。増湿塔７に導入された圧縮空気ｂは、充填物８を通過することで水分を含んだ加湿空気ｃとなる。この加湿空気ｃは再生熱交換器１０を通過させることで温度が上がり加湿空気ｃに含まれた水滴等が蒸発されて燃焼用空気ｄとなり、配管１１を経由して燃焼器１２に供給される。 First, the introduced air a is pressurized and heated by the compressor 2 to generate compressed air b, and the generated compressed air b is discharged to the pipe 5 and cooled by the air cooler 6. To introduce. The compressed air b introduced into the humidification tower 7 becomes humidified air c containing moisture by passing through the packing 8. When the humidified air c passes through the regenerative heat exchanger 10, the temperature rises and water droplets and the like contained in the humidified air c are evaporated to become combustion air d, which is supplied to the combustor 12 via the pipe 11. .

燃焼用空気ｄは、燃料ポンプ１３によって供給された燃料と燃焼器１２内で混合して燃焼され、燃焼ガスｅを発生し、その燃焼ガスｅをガスタービン３に導いて駆動する。ガスタービン３を駆動した後の排気ガスｆは、再生熱交換器１０で前記加湿空気ｃを昇温させた後、給水加熱器１６及び水回収装置１８を経由して煙突１９から大気中に排出される。 The combustion air d is mixed with the fuel supplied by the fuel pump 13 and combusted in the combustor 12, generates combustion gas e, and guides the combustion gas e to the gas turbine 3 for driving. The exhaust gas f after driving the gas turbine 3 raises the temperature of the humidified air c in the regenerative heat exchanger 10 and then exhausts it from the chimney 19 to the atmosphere via the feed water heater 16 and the water recovery device 18. Is done.

一方、増湿塔７の起動は、次の手順で行う。 On the other hand, activation of the humidification tower 7 is performed in the following procedure.

水回収装置１８内にポンプ３４で必要量の水が供給してあれば、その水をポンプ３５で増湿塔７の底部に送る。水回収装置１８内に必要量の水が確保されていなければ、ポンプ３４で給水した後、ポンプ３５で増湿塔７に給水する。増湿塔７の底部の水は、給水ポンプ２０によって配管２１，２２に送り出す。配管２１に送り出された水は、空気冷却器６で圧縮空気ｂの熱を受けて昇温し、言い換えれば圧縮機２から吐出された高温高圧の圧縮空気ｂを冷却し、流量調節弁２３，三方切替え弁２４を経由して配管２６によって水回収装置１８に排出される。配管２２に送り出された水は、給水加熱器１６で昇温された後、流量調節弁２６，三方切替え弁２７を経由して配管２９によって水回収装置１８に排出される。 If a required amount of water is supplied to the water recovery apparatus 18 by the pump 34, the water is sent to the bottom of the humidification tower 7 by the pump 35. If the required amount of water is not secured in the water recovery device 18, the water is supplied by the pump 34 and then supplied to the humidification tower 7 by the pump 35. The water at the bottom of the humidification tower 7 is sent out to the pipes 21 and 22 by the water supply pump 20. The water sent to the pipe 21 receives the heat of the compressed air b in the air cooler 6 and rises in temperature. In other words, the high-temperature and high-pressure compressed air b discharged from the compressor 2 is cooled, and the flow control valve 23, It is discharged to the water recovery device 18 by the pipe 26 via the three-way switching valve 24. The water sent to the pipe 22 is heated by the feed water heater 16 and then discharged to the water recovery device 18 through the pipe 29 via the flow rate control valve 26 and the three-way switching valve 27.

配管２６によって水回収装置１８に回収された昇温された水は、水噴霧ポンプ３１で冷却器３２に送られて冷却された後、水回収装置１８の上部から噴霧される。 The heated water recovered in the water recovery device 18 by the pipe 26 is sent to the cooler 32 by the water spray pump 31 and cooled, and then sprayed from the upper part of the water recovery device 18.

このような運転状態において、増湿塔７で圧縮空気ｂを加湿する時期に達したら、給水加熱器１６の出口の給水温度が加湿に適した所定温度となるように、流量調節弁２６で流量を調整する。即ち、流量を少なくすることで給水温度を上昇させ、流量を多くすることで給水温度を下降させている。 In such an operating state, when it is time to humidify the compressed air b in the humidifying tower 7, the flow rate control valve 26 controls the flow rate so that the feed water temperature at the outlet of the feed water heater 16 becomes a predetermined temperature suitable for humidification. Adjust. That is, the feed water temperature is raised by decreasing the flow rate, and the feed water temperature is lowered by increasing the flow rate.

給水加熱器１６の出口の給水温度が加湿に適した所定温度になったことを温度測定手段Ｔ２で確認できたら、三方切替え弁２７を徐々に配管２９側から配管２８側に切替えて、混合器３０を経由して前記増湿塔７に給水する。 When the temperature measuring means T2 confirms that the feed water temperature at the outlet of the feed water heater 16 has reached a predetermined temperature suitable for humidification, the three-way switching valve 27 is gradually switched from the pipe 29 side to the pipe 28 side, Water is supplied to the humidification tower 7 via 30.

給水加熱器１６側から増湿塔７への給水が始まった後、空気冷却器６の配管２１の出口の給水温度が加湿に適した所定温度となるように、流量調節弁２３で流量を調整し、空気冷却器６の出口の給水温度が加湿に適した所定温度になったことを温度測定手段Ｔ３で確認できたら、三方切替え弁２４を徐々に配管２６側から配管２５側に切替えて、混合器３０を経由して前記増湿塔７に給水する。 After water supply to the humidification tower 7 starts from the feed water heater 16 side, the flow rate is adjusted by the flow rate control valve 23 so that the feed water temperature at the outlet of the pipe 21 of the air cooler 6 becomes a predetermined temperature suitable for humidification. When the temperature measuring means T3 confirms that the feed water temperature at the outlet of the air cooler 6 has reached a predetermined temperature suitable for humidification, the three-way switching valve 24 is gradually switched from the pipe 26 side to the pipe 25 side, Water is supplied to the humidification tower 7 via the mixer 30.

このように徐々に三方切替え弁２７，２４を切替えてゆくことにより、圧縮空気ｂの加湿量を緩やかに増加させることができる。 By gradually switching the three-way switching valves 27 and 24 in this way, the humidification amount of the compressed air b can be gradually increased.

また、給水加熱器１６を経由した配管２８から増湿塔７への給水を行ってから、空気冷却器６を経由した配管２５から増湿塔７への給水を行うようにすることで、給水温度の低い給水加熱器１６側からの給水で増湿塔７内での給水の急激な蒸発を抑えることができ、圧縮空気ｂの加湿量の増加を緩やかにすることができるのである。 In addition, water is supplied from the pipe 28 via the feed water heater 16 to the humidification tower 7 and then water is supplied from the pipe 25 via the air cooler 6 to the humidity tower 7. The rapid evaporation of the feed water in the humidification tower 7 can be suppressed by the feed water from the feed water heater 16 having a low temperature, and the increase in the humidification amount of the compressed air b can be moderated.

即ち、空気冷却器６を通過する圧縮空気ｂの温度は、定格回転数ではあまり変化しないので、空気冷却器６を通過する給水の温度も変化しない。これに対し、給水加熱器１６を通過する排気ガスｆの温度は、定格回転数でも負荷が大きくなると高くなるので、給水加熱器１６を通過する給水の温度も負荷が大きくなると高くなる。加湿を開始するのは、定格回転数で部分負荷のときが一つの方法である。このときは、空気冷却器６側より給水加熱器１６側の給水温度が低くなっている。増湿塔７での加湿量は、給水温度の影響を受ける。それは温度が高いほど加湿量が多い傾向にある。 That is, the temperature of the compressed air b that passes through the air cooler 6 does not change much at the rated speed, so the temperature of the feed water that passes through the air cooler 6 also does not change. On the other hand, the temperature of the exhaust gas f passing through the feed water heater 16 increases as the load increases even at the rated rotational speed, so the temperature of the feed water passing through the feed water heater 16 also increases as the load increases. One way to start humidification is at the rated speed and partial load. At this time, the feed water temperature on the feed water heater 16 side is lower than the air cooler 6 side. The humidification amount in the humidification tower 7 is influenced by the feed water temperature. The higher the temperature, the greater the amount of humidification.

そこで、最初に、給水温度の低い給水加熱器１６側から増湿塔７への給水を行うことで、圧縮空気ｂの加湿量の増加を緩やかにし、結果的に高湿分ガスタービン発電設備１Ａの安定運転までの時間を短縮させるようにしたのである。 Therefore, first, by supplying water to the humidification tower 7 from the side of the feed water heater 16 having a low feed water temperature, the increase in the humidification amount of the compressed air b is moderated. As a result, the high-humidity gas turbine power generation facility 1A The time to stable operation was reduced.

尚、増湿塔７の停止時には、上述と逆の手順で行うことにより、圧縮空気ｂの加湿量の低減を緩やかにして高湿分ガスタービン発電設備１Ａを円滑に停止させることができる。 In addition, when the humidification tower 7 is stopped, the high-humidity gas turbine power generation facility 1 </ b> A can be smoothly stopped by gradually reducing the humidification amount of the compressed air b by performing a procedure reverse to the above.

次に、本発明による高湿分ガスタービン設備の第２の実施の形態を、図２に示す高湿分ガスタービン発電設備１Ｂに基づいて説明する。尚、図１に示す高湿分ガスタービン発電設備１Ａと同一符号は、同一部品を示すので、再度の詳細な説明は省略する。 Next, a second embodiment of the high humidity gas turbine equipment according to the present invention will be described based on the high humidity gas turbine power generation equipment 1B shown in FIG. In addition, since the same code | symbol as 1 A of high-humidity gas turbine power generation equipment shown in FIG.

この高湿分ガスタービン発電設備１Ｂは、図１に示す高湿分ガスタービン発電設備１Ａの構成の空気冷却器６，配管２１，流量調節弁２３，三方切替え弁２４，配管２５，配管２６，混合器３０，温度測定手段Ｔ３を削除したものであり、このように構成された高湿分ガスタービン発電設備１Ｂは、多少効率が低下しても構成を簡単にすることが求められる容量の小さい設備に適するものである。 This high-humidity gas turbine power generation facility 1B includes an air cooler 6, a pipe 21, a flow rate control valve 23, a three-way switching valve 24, a piping 25, a piping 26, a configuration of the high-humidity gas turbine power generation facility 1A shown in FIG. The mixer 30 and the temperature measuring means T3 are eliminated, and the high-humidity gas turbine power generation facility 1B configured in this way has a small capacity that is required to simplify the configuration even if the efficiency is somewhat reduced. It is suitable for equipment.

本実施の形態による増湿塔７の起動は、次の手順で行う。 The activation of the humidification tower 7 according to the present embodiment is performed according to the following procedure.

まず、水回収装置１８の水をポンプ３５で増湿塔７へ送り出し、増湿塔７からは給水ポンプ２０で給水加熱器１６に給水する。給水加熱器１６で昇温された給水は、流量調節弁２６，三方切替え弁２７を経由して配管２９によって水回収装置１８に排出される。 First, the water in the water recovery device 18 is sent out to the humidification tower 7 by the pump 35, and water is supplied from the humidification tower 7 to the feed water heater 16 by the feed water pump 20. The feed water heated by the feed water heater 16 is discharged to the water recovery device 18 through the pipe 29 via the flow rate control valve 26 and the three-way switching valve 27.

配管２９によって水回収装置１８に回収された昇温された水は、水噴霧ポンプ３１で冷却器３２に送られて冷却された後、水回収装置１８の上部から噴霧される。 The heated water recovered in the water recovery device 18 by the pipe 29 is sent to the cooler 32 by the water spray pump 31 and cooled, and then sprayed from the upper part of the water recovery device 18.

このような運転状態において、増湿塔７で圧縮空気ｂを加湿する時期に達したら、給水加熱器１６の出口の給水温度が加湿開始に適した所定温度となるように、流量調節弁２６で流量を調整する。即ち、流量を少なくすることで給水温度を上昇させ、流量を多くすることで給水温度を下降させている。 In such an operating state, when it is time to humidify the compressed air b in the humidifying tower 7, the flow rate adjustment valve 26 adjusts the feed water temperature at the outlet of the feed water heater 16 to a predetermined temperature suitable for the start of humidification. Adjust the flow rate. That is, the feed water temperature is raised by decreasing the flow rate, and the feed water temperature is lowered by increasing the flow rate.

給水加熱器１６の出口の給水温度が加湿に適した所定温度になったことを温度測定手段Ｔ２で確認できたら、三方切替え弁２７を徐々に配管２９側から配管２８側に切替えて、前記増湿塔７への給水を開始する。 When the temperature measuring means T2 confirms that the feed water temperature at the outlet of the feed water heater 16 has reached a predetermined temperature suitable for humidification, the three-way switching valve 27 is gradually switched from the pipe 29 side to the pipe 28 side to Water supply to the wet tower 7 is started.

このように給水温度を加湿に適した所定温度にした後、徐々に増湿塔７への給水を行うことにより、圧縮空気ｂの加湿量を緩やかに増加させることができるのである。 Thus, after the water supply temperature is set to a predetermined temperature suitable for humidification, the humidification amount of the compressed air b can be gradually increased by gradually supplying water to the humidification tower 7.

また、増湿塔７の停止時には、上述と逆の手順で行うことにより、圧縮空気ｂの加湿量の低減を緩やかにして高湿分ガスタービン発電設備１Ｂを円滑に停止させることができる。 Further, when the humidification tower 7 is stopped, the high-humidity gas turbine power generation facility 1B can be smoothly stopped by gradually reducing the humidification amount of the compressed air b by performing a procedure reverse to the above.

以上説明したように、第２の実施の形態によっても前記第１の実施の形態と同様な効果を奏することができる。 As described above, the same effects as those of the first embodiment can be obtained by the second embodiment.

尚、上記各実施の形態に説明したような給水制御を行う場合には、図示はしていないが、各温度測定手段Ｔ１〜Ｔ３からの測定結果により各弁２３，２４，２６，２７に開度調整を支持する給水制御手段が存在することは云うまでもない。 When water supply control as described in the above embodiments is performed, although not shown, the valves 23, 24, 26, and 27 are opened according to the measurement results from the temperature measuring means T1 to T3. Needless to say, there is water supply control means for supporting the degree adjustment.

さらに、給水量を制御するために流量調節弁２３，２６を用いているが、流量調節弁２３，２６に代えて、給水ポンプ２０の回転数制御を行うことで給水量を制御するようにしてもよい。したがって、これら流量調節弁２３，２６や回転数制御ができる給水ポンプが本発明による流量調整手段に相当する。 Furthermore, although the flow rate control valves 23 and 26 are used to control the water supply amount, the water supply amount is controlled by controlling the rotational speed of the water supply pump 20 instead of the flow rate control valves 23 and 26. Also good. Accordingly, the flow rate adjusting valves 23 and 26 and the feed water pump capable of controlling the rotational speed correspond to the flow rate adjusting means according to the present invention.

このほか、給水加熱器１６の給水量を制御するために流量調節弁２６、増湿塔７への給水量を制御するために三方切替え弁２７を用いているが、これらの代わりに、次の構成としても同等の機能を持たせることができる。即ち、給水加熱器１６の出口の配管２８に流量調節弁を、配管２９に流量調節弁を設け、加湿を開始する前は配管２９の流量調節弁で流量を制御し、加湿を開始するときは配管２８の流量調節弁を徐々に開いて配管２９の流量調節弁を徐々に閉じてゆくのである。 In addition, the flow rate adjusting valve 26 and the three-way switching valve 27 are used to control the amount of water supplied to the humidification tower 7 in order to control the amount of water supplied to the feed water heater 16. The structure can have the same function. That is, when the flow control valve is provided in the pipe 28 at the outlet of the feed water heater 16 and the flow control valve is provided in the pipe 29, the flow rate is controlled by the flow control valve in the pipe 29 before humidification is started. The flow rate control valve of the pipe 28 is gradually opened and the flow rate control valve of the pipe 29 is gradually closed.

さらにまた、空気冷却器１６の給水量を制御するために流量調節弁２３を、増湿塔７への給水量を制御するために三方切替え弁２４を用いているが、これらの代わりに、次の構成としても同等の機能を持たせることができる。即ち、空気冷却器６の出口の配管２５に流量調節弁を、配管２６に流量調節弁を設け、加湿を開始する前は配管２６の流量調節弁で流量を制御し、加湿を開始するときは配管２５の流量調節弁を徐々に開いて配管２６の流量調節弁を徐々に閉じてゆくのである。 Furthermore, a flow rate adjusting valve 23 is used to control the amount of water supplied to the air cooler 16, and a three-way switching valve 24 is used to control the amount of water supplied to the humidification tower 7. The same function can be provided even in the configuration. That is, when the flow control valve is provided in the pipe 25 at the outlet of the air cooler 6 and the flow control valve is provided in the pipe 26 and the humidification is started, the flow rate is controlled by the flow control valve in the pipe 26 and the humidification is started. The flow control valve of the pipe 25 is gradually opened and the flow control valve of the pipe 26 is gradually closed.

また、給水ポンプ２０，給水加熱器１６，温度測定手段Ｔ２，流量調節弁２６，三方切替え弁２７が、本発明による第１の給水手段に相当し、給水ポンプ２０，空気冷却器６，温度測定手段Ｔ３，流量調節弁２３，三方切替え弁２４が、本発明による第２の給水手段に相当するものである。 Further, the feed water pump 20, feed water heater 16, temperature measuring means T2, flow rate adjusting valve 26, and three-way switching valve 27 correspond to the first feed water means according to the present invention, and the feed water pump 20, air cooler 6, temperature measurement. The means T3, the flow control valve 23, and the three-way switching valve 24 correspond to the second water supply means according to the present invention.

本発明による高湿分ガスタービン設備の第１の実施の形態を示す高湿分ガスタービン発電設備の概略ブロック図。1 is a schematic block diagram of a high humidity gas turbine power generation facility showing a first embodiment of a high humidity gas turbine facility according to the present invention. 本発明による高湿分ガスタービン設備の第２の実施の形態を示す高湿分ガスタービン発電設備の概略ブロック図。The schematic block diagram of the high humidity gas turbine power generation equipment which shows 2nd Embodiment of the high humidity gas turbine equipment by this invention.

Explanation of symbols

１Ａ，１Ｂ…高湿分ガスタービン発電設備、２…圧縮機、３…ガスタービン、４…発電機、６…空気冷却器、７…増湿塔、１０…再生熱交換器、１２…燃焼器、１３…燃料ポンプ、１６…給水加熱器、１８…水回収装置、２０…給水ポンプ、２３，２６…流量調節弁、２４，２７…三方切替え弁（切替え弁）、３０…混合器。 DESCRIPTION OF SYMBOLS 1A, 1B ... High humidity gas turbine power generation equipment, 2 ... Compressor, 3 ... Gas turbine, 4 ... Generator, 6 ... Air cooler, 7 ... Humidification tower, 10 ... Regenerative heat exchanger, 12 ... Combustor DESCRIPTION OF SYMBOLS 13 ... Fuel pump, 16 ... Feed water heater, 18 ... Water collection | recovery apparatus, 20 ... Water feed pump, 23, 26 ... Flow control valve, 24, 27 ... Three-way switching valve (switching valve), 30 ... Mixer.

Claims

A compressor that compresses air, a humidifying tower that humidifies compressed air compressed by the compressor, a combustor that mixes and humidifies the humidified humidified air and fuel, and the combustor produced by the combustor A gas turbine driven by combustion gas, a regenerative heat exchanger that heats the humidified air with exhaust gas discharged from the gas turbine, and feed water heating that preheats the feed water supplied to the humidification tower with the exhaust gas In the high-humidity gas turbine equipment provided with a vessel, when supplying water to the humidification tower, temperature measurement means for measuring the feed water temperature, and until the temperature measured by the temperature measurement means reaches a predetermined temperature, the humidification tower A high-humidity gas turbine facility comprising a flow rate adjusting means for limiting the amount of water supplied to the water supply and a switching valve for gradually supplying the water supply at a predetermined temperature to the humidification tower.

A compressor for compressing air; an air cooler for cooling the compressed air compressed by the compressor; a humidifying tower for humidifying the compressed air cooled by the air cooler; and the humidified humidified air, A combustor for mixing and burning fuel, a gas turbine driven by combustion gas generated by the combustor, and a regenerative heat exchanger for heating the humidified air with exhaust gas discharged from the gas turbine; A feed water heater for preheating the feed water supplied to the humidification tower with the exhaust gas; an air cooler for cooling the compressed air compressed by the compressor and preheating the feed water supplied to the humidification tower; A high-humidity gas turbine facility comprising: a first water supply means for limiting a water supply amount to the humidification tower until a water supply temperature from the water heater reaches a predetermined temperature; and the air cooler increases the water supply. The water supply temperature to the wet tower is predetermined A second water supply means for restricting the amount of water supplied to the humidification tower until the temperature reaches a predetermined level, and gradually the water supply from the first water supply means at a predetermined temperature when the humidification tower is activated. performs instructions supplied to the humidifying tower (5) to gradually feed water from the second water supply means has reached a predetermined temperature after instructing supplied to the tower, at the time of stop of the humidifying tower (5), the second water supply means A high-humidity gas turbine equipment, comprising: a water supply control means for giving an instruction to gradually stop water supply from the first water supply means after giving an instruction to gradually stop water supply from the first water supply means.

The first water supply means and the second water supply means are respectively a temperature measuring means for detecting a water supply temperature to the humidifying tower, a flow rate adjusting valve for adjusting the amount of water supplied to the humidifying tower, and water supply. The high-humidity gas turbine equipment according to claim 2, further comprising a switching valve for switching to the humidification tower or the drain side.

The high humidity according to claim 2, further comprising a mixer for mixing the water supplied from the first water supply means and the water supplied from the second water supply means and supplying the mixed water to the humidification tower. Min gas turbine equipment.

A compressor that compresses air, a humidifying tower that humidifies compressed air compressed by the compressor, a combustor that mixes and humidifies the humidified humidified air and fuel, and the combustor produced by the combustor A gas turbine driven by combustion gas, a regenerative heat exchanger that heats the humidified air with exhaust gas discharged from the gas turbine, and feed water heating that preheats the feed water supplied to the humidification tower with the exhaust gas When operating a high-humidity gas turbine facility equipped with a vessel, when the humidifying tower is started, water supply to the humidifying tower is started gradually after the feed water temperature reaches a predetermined temperature. The operation method of high-humidity gas turbine equipment.

A compressor for compressing air; an air cooler for cooling the compressed air compressed by the compressor; a humidifying tower for humidifying the compressed air cooled by the air cooler; and the humidified humidified air, A combustor for mixing and burning fuel, a gas turbine driven by combustion gas generated by the combustor, and a regenerative heat exchanger for heating the humidified air with exhaust gas discharged from the gas turbine; A feed water heater for preheating the feed water supplied to the humidification tower with the exhaust gas; an air cooler for cooling the compressed air compressed by the compressor and preheating the feed water supplied to the humidification tower; When operating the high-humidity gas turbine equipment provided with the humidifier tower, when the water supply temperature from the water heater to the humidifier tower reaches a predetermined temperature at the start of the humidifier tower, the water supply to the humidifier tower is gradually And then the air cooling Gradually starts to feed water from the vessel, and, when the stop of the increase tower, as gradually to stop the water supply from the feed water heater was gradually stops the water supply from the air cooler A method for operating a high-humidity gas turbine facility, characterized in that: