JPS6318141A - Temperature reducer for gas turbine - Google Patents
Temperature reducer for gas turbineInfo
- Publication number
- JPS6318141A JPS6318141A JP16118986A JP16118986A JPS6318141A JP S6318141 A JPS6318141 A JP S6318141A JP 16118986 A JP16118986 A JP 16118986A JP 16118986 A JP16118986 A JP 16118986A JP S6318141 A JPS6318141 A JP S6318141A
- Authority
- JP
- Japan
- Prior art keywords
- duct
- air
- cooling water
- piping
- laval nozzle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000003638 chemical reducing agent Substances 0.000 title abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000498 cooling water Substances 0.000 claims abstract description 18
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明はガスタービンの翼を冷却する空気の温度を低Ｆ
させる減温器に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention lowers the temperature of the air that cools the blades of a gas turbine to a low F.
Regarding the desuperheater.
（従来の技術）
ガスタービンにおいては、その熱効率や比出力を向Ｆさ
せるために、タービンの入口温１衰の上昇が追及されて
いる。(Prior Art) In gas turbines, in order to improve their thermal efficiency and specific output, efforts are being made to increase the inlet temperature decay of the turbine.
しかしながら、ガスタービンの入口温度を上昇さＵると
タービン翼のメタル温度が上ｊ？ Ｌ、構成材料の耐熱
温度を越えたり寿命を短縮８せるなどの問題点が生じる
ため、翼の冷に１が必要となる。However, if the inlet temperature of the gas turbine is increased, the metal temperature of the turbine blades will rise. 1 is required to cool the blades because problems such as exceeding the allowable temperature limit of the constituent materials and shortening the lifespan occur.
特に高温タービンの第１段静翼は高温にさらされるので
、圧ｍ機ｒ圧縮された空気の一部を減温器に導入し、温
度を下げた空気をガスタービン内ニ供給して翼を冷却す
るようにしている。In particular, the first stage stationary blades of high-temperature turbines are exposed to high temperatures, so a part of the compressed air is introduced into the desuperheater, and the lowered temperature air is supplied to the gas turbine to cool the blades. That's what I do.
この種の減温器としては、従来、空気ゆ水で冷ｆ４１さ
れる熱交換器や水を噴霧する減温器が用いられていた。As this type of desuperheater, a heat exchanger that uses air and water for cooling F41 and a desuperheater that sprays water have conventionally been used.
第４図は減温器として熱交換器を用いたタービンプラン
トの構成例を示すもので、圧縮機１で圧縮された空気は
燃料配管２から供給される燃料と共に燃焼器３に導入さ
れ、燃焼しｃ高ｆ；Ａ高圧のガスとなってガスタービン
４に導かれ、これを駆動する。一方、圧縮機１で圧縮さ
れた空気の一部は熱交換器５内に導入され、配管６内を
流れる水との熱交換によって冷に１された後、ガスター
ビン４内に冷却空気として供給される。Figure 4 shows an example of the configuration of a turbine plant using a heat exchanger as a desuperheater. Air compressed by a compressor 1 is introduced into a combustor 3 together with fuel supplied from a fuel pipe 2, and the air is combusted. c Height f; A becomes high-pressure gas and is guided to the gas turbine 4 to drive it. On the other hand, a part of the air compressed by the compressor 1 is introduced into the heat exchanger 5, and after being cooled by heat exchange with water flowing in the pipe 6, it is supplied to the gas turbine 4 as cooling air. be done.
第５図ｔよ減温器として噴霧水を使用した例を示すもの
で、減温器７に開口づる配管８の先端ノズルから噴】）
する冷却水によって減温器７内を流過する圧縮空気を冷
却する。FIG.
The compressed air flowing through the attemperator 7 is cooled by the cooling water.
（発明が解決しようとづる問題点）
しかしながら、第４図のように熱交換器Ｃ２気を冷却す
る場合は、熱交換器内での空気の圧力損失が大きく、冷
却した空気の圧力が低下しくＭの冷却性能が低下すると
いう欠点があった。(Problem to be solved by the invention) However, when cooling the heat exchanger C2 air as shown in Fig. 4, the pressure loss of the air inside the heat exchanger is large, and the pressure of the cooled air does not decrease. There was a drawback that the cooling performance of M was reduced.
また、第５図のように水を噴霧する減温器Ｃは水を細か
い水滴としＣ噴出させることがでさないため、水が空気
中で充分に蒸発せず、水滴のまま残り、ガスタービン内
で分離し−ＵＮＩを局所的に冷ＤＩ Ｌ、づぎて翼を損
傷させる恐れがあり、また必要以上の水を噴霧さＵるこ
ととなるため、この水分がガスタービン内に入ってガス
温度を低トさせ、ガスタービンの熱効率を低下させると
いう不都合があった。In addition, as shown in Figure 5, the desuperheater C that sprays water cannot make the water into fine droplets and eject it, so the water does not evaporate sufficiently in the air and remains as water droplets, causing the gas turbine to This water could enter the gas turbine and cause the UNI to cool down locally, potentially damaging the blades and spraying more water than necessary. This has the disadvantage of lowering the temperature and reducing the thermal efficiency of the gas turbine.
（問題点を解決するための組設）
本発明のガスタービン用減温器は減温器ダクトの内側ま
たは外側に冷２４１水配管を設け、前記減温器ダクトの
内側における冷却水配管の先端にラバールノズルを設け
、前記減温器ダクト内を流れる高温空気との熱交換によ
って飽和水または過熱蒸気となった冷却水を前記ラバー
ルノズルから＊ｎさせるよう構成したことを特徴とする
。(Assembly for Solving Problems) The attemperator for a gas turbine of the present invention is provided with a cold 241 water pipe inside or outside the attemperator duct, and the tip of the cooling water pipe inside the attemperator duct. It is characterized in that a Laval nozzle is provided in the desuperheater duct, and cooling water that has become saturated water or superheated steam through heat exchange with the high-temperature air flowing in the desuperheater duct is directed from the Laval nozzle.
（作 用）
上述のように構成した本発明のガスタービン用減塩器に
おいては水がラバールノズルから微細粒子として噴霧さ
れるので、減温器内を流過σる圧縮空気は適温に冷ｆＪ
Ｉされる。(Function) In the gas turbine desalination device of the present invention configured as described above, water is sprayed as fine particles from the Laval nozzle, so the compressed air flowing through the desuperheater is cooled to an appropriate temperature fJ.
I will be treated.
（実施例） 以下、図面を参照して本発明の詳細な説明する。(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図に足す実施例において、減温器ダクト１０内には
配管１１が螺旋状またはヘアピン状に弯曲して配置され
ている。配管１１の先端にはそこを流過する水を微１１
１１１として噴霧づるラバールノズル１２が取付けられ
でいる。なお、図中、１３μ配管１１またはラバールノ
ズル１２を固定する支持棒を示し、また１４は冷却水加
圧ポンプを示す。In the embodiment shown in FIG. 1, a pipe 11 is arranged in the attemperator duct 10 in a helical or hairpin-like manner. At the tip of the pipe 11, there is a small amount of water flowing through it.
A Laval nozzle 12 for spraying is attached as 111. In addition, in the figure, a support rod for fixing the 13μ piping 11 or the Laval nozzle 12 is shown, and 14 is a cooling water pressurizing pump.
このような構成の本発明の減温器において、冷却水は加
圧ポンプ１４で加圧され（配管１１内に圧入８れる。こ
の配管の周囲には、減温器ダクト１０内を高温の圧縮空
気が矢符Ａ、Ｂに示すように流れており、その熱が配管
１１の管壁を通して管内の冷却水に伝わり、これを加熱
覆る。この熱交換が充分に行なわれると冷却水は飽和水
となり、さらに加熱されるとその一部は過熱蒸気となる
。In the desuperheater of the present invention having such a configuration, the cooling water is pressurized by the pressure pump 14 (pressurized into the pipe 11). Air is flowing as shown by arrows A and B, and its heat is transmitted to the cooling water inside the pipe through the pipe wall of pipe 11, heating and covering it.If this heat exchange is carried out sufficiently, the cooling water becomes saturated water. When heated further, some of it becomes superheated steam.
換もすれば、このような状態となるように配管１１の長
さを選びまた配管の表面には必要に応じて熱交換促進用
のフィンを取付ける。In other words, the length of the pipe 11 is selected so as to achieve this condition, and fins for promoting heat exchange are attached to the surface of the pipe as necessary.
一般に、ガスタービンの圧縮機から抽出される空気圧は
１２ａｔａ＠後ｒあり、その温度（１３５０℃程度であ
る。従って３００℃まで冷ｕｌ水を加熱したとき、９０
気Ｆ士程度の水は飽和状態になる。このような高圧の飽
和水、またはその一部が過熱蒸気となった気液二相流を
ラバールノズル１２がら空気中に噴出させると、ラバー
ルノズル１２の出口近傍で減Ｊｆｌ二沸騰が生じ、径が
数ミクロン程度の極めて小さな水滴となる。この微小水
滴は空気中で容易に蒸発し、減温器ダクト内を流過づる
空気を冷ｆｉｌする。Generally, the air pressure extracted from the compressor of a gas turbine is 12ata@r, and its temperature (about 1350℃).Therefore, when cold water is heated to 300℃, 90
Water at the level of KiFshi becomes saturated. When such high-pressure saturated water, or a gas-liquid two-phase flow in which a part of it has become superheated steam, is ejected into the air through the Laval nozzle 12, a two-phase boiling occurs near the exit of the Laval nozzle 12, and the diameter decreases by several degrees. It becomes extremely small water droplets on the order of microns. These minute water droplets easily evaporate in the air and cool the air flowing through the attemperator duct.
第２図は本発明のガスタービン用減温器の変形例を示す
もので、ラバールノズル１２の周凹の空気流の流速を増
加させるため減温器ダクト１０の出口端近傍１０’ を
絞っである。また、第３図は配管１１を減温器ダクト１
０の外壁に密着し゛Ｃ螺旋状に配置し、その先端部近傍
１１′とラバールノズル１２を減温器ダクト１０内に位
置させたもので、この場合にし配管１１内の冷１１水は
減温２１ダクト１０の外壁を通して伝わる減温器ダクト
内のａ温空気により加熱され、飽和水または過熱蒸気と
なってラバールノズル１２から噴霧される。FIG. 2 shows a modified example of the attemperator for a gas turbine according to the present invention, in which the vicinity 10' of the outlet end of the attemperator duct 10 is constricted in order to increase the flow velocity of the air flow in the circumferential recess of the Laval nozzle 12. . In addition, in Fig. 3, the piping 11 is connected to the desuperheater duct 1.
0, and the vicinity of the tip 11' and the Laval nozzle 12 are located in the desuperheater duct 10. In this case, the cold water in the piping 11 is cooled to It is heated by the a-temperature air in the attemperator duct that is transmitted through the outer wall of the duct 10 and is sprayed from the Laval nozzle 12 as saturated water or superheated steam.
なお、配管１１を減温：Ｓダクト１０の内壁に密着して
螺旋状に配置することもでさる。Note that it is also possible to arrange the pipe 11 in a spiral shape closely to the inner wall of the S duct 10.
上述の如く、本発明によれば、冷却水を微ＩＩＩな水滴
として減温器ダクト内に噴霧することができるので、ガ
スタービンに導入される冷ＩＪ］用空気を適度の温度に
低下させることができる。また少聞の冷ＩＪ］水で空気
を冷却できるので、ガスタービンの熱効率は高レベルに
保たれ、また、過分の水分がタービン内に導入され、翼
を損傷さけることもない。As described above, according to the present invention, cooling water can be sprayed into the attemperator duct in the form of fine water droplets, so that the temperature of the cold IJ air introduced into the gas turbine can be lowered to an appropriate temperature. Can be done. Also, since the air can be cooled with a small amount of cold IJ water, the thermal efficiency of the gas turbine is maintained at a high level, and excessive moisture is not introduced into the turbine and damage the blades.
第１図ないし第３図はそれぞれ本発明の実施例を示７１
４略図、第４図と第５図はそれぞれ従来の減温器を備え
たガスタービンの系統図である。
１・・・圧縮機、２・・・燃料配管、３・・・燃焼器、
４・・・ガスタービン、５・・・熱交換器、６・・・配
管、７・・・減温器、１０・・・減温器ダクト、１１・
・・配管、１２・・・ラバールノズル、１３・・・支持
棒、１４・・・加圧ポンプ。1 to 3 each show an embodiment of the present invention 71
4 and 5 are system diagrams of a gas turbine equipped with a conventional attemperator, respectively. 1...Compressor, 2...Fuel piping, 3...Combustor,
4... Gas turbine, 5... Heat exchanger, 6... Piping, 7... Desuperheater, 10... Desuperheater duct, 11.
...Piping, 12...Laval nozzle, 13...Support rod, 14...Pressure pump.
Claims (1)
、前記減温器ダクトの内側における冷却水配管の先端に
ラバールノズルを設け、前記減温器ダクト内を流れる高
温空気との熱交換によつて飽和水または過熱蒸気となっ
た冷却水を前記ラバールノズルから噴霧させるよう構成
したことを特徴とするガスタービン用減温器。 ２、冷却水をラバールノズルに導く配管が減温器ダクト
へ内に弯曲して設けられていることを特徴とする特許請
求の範囲第１項記載のガスタービン用減温器。 ３、減温器ダクトの出口側がラバールノズルの周囲の空
気流の流速が増加するよう絞られていることを特徴とす
る特許請求の範囲第１項または第２項記載のガスタービ
ン用減温器。 ４、冷却水をラバールノズルに導く配管が減温器ダクト
の内外壁に螺旋状に密着して配置されていることを特徴
とする特許請求の範囲第１項記載のガスタービン用減温
器。[Claims] 1. A cooling water pipe is provided inside or outside the attemperator duct, a Laval nozzle is provided at the tip of the cooling water pipe inside the attemperator duct, and high temperature flowing inside the attemperator duct is provided. A desuperheater for a gas turbine, characterized in that the cooling water that has become saturated water or superheated steam through heat exchange with air is sprayed from the Laval nozzle. 2. The attemperator for a gas turbine according to claim 1, wherein the piping for guiding the cooling water to the Laval nozzle is curved inward to the attemperator duct. 3. The attemperator for a gas turbine according to claim 1 or 2, wherein the outlet side of the attemperator duct is constricted so as to increase the flow velocity of the air flow around the Laval nozzle. 4. The desuperheater for a gas turbine according to claim 1, wherein the piping for guiding the cooling water to the Laval nozzle is arranged in close contact with the inner and outer walls of the desuperheater duct in a spiral manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16118986A JPH076406B2 (en) | 1986-07-09 | 1986-07-09 | Desuperheater for gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16118986A JPH076406B2 (en) | 1986-07-09 | 1986-07-09 | Desuperheater for gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6318141A true JPS6318141A (en) | 1988-01-26 |
| JPH076406B2 JPH076406B2 (en) | 1995-01-30 |
Family
ID=15730278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16118986A Expired - Fee Related JPH076406B2 (en) | 1986-07-09 | 1986-07-09 | Desuperheater for gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH076406B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009116527A1 (en) | 2008-03-19 | 2009-09-24 | ダイキン工業株式会社 | Coating composition for forming high dielectric film and high dielectric film |
| CN107588434A (en) * | 2017-09-25 | 2018-01-16 | 上海泛智能源装备有限公司 | A kind of spray cooling structure and combustor test device |
| CN110643810A (en) * | 2019-09-30 | 2020-01-03 | 长春黄金研究院有限公司 | Method for measuring saturated water holding rate of ore in heap leaching process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08260512A (en) * | 1995-03-20 | 1996-10-08 | Isao Okawara | Construction working machine with spraying device |
-
1986
- 1986-07-09 JP JP16118986A patent/JPH076406B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009116527A1 (en) | 2008-03-19 | 2009-09-24 | ダイキン工業株式会社 | Coating composition for forming high dielectric film and high dielectric film |
| CN107588434A (en) * | 2017-09-25 | 2018-01-16 | 上海泛智能源装备有限公司 | A kind of spray cooling structure and combustor test device |
| CN110643810A (en) * | 2019-09-30 | 2020-01-03 | 长春黄金研究院有限公司 | Method for measuring saturated water holding rate of ore in heap leaching process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH076406B2 (en) | 1995-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |