JP2023020919A - タービンシステムにおける微粒子進入検出のインテリジェントモデルを構築するための検知システム及び方法 - Google Patents
タービンシステムにおける微粒子進入検出のインテリジェントモデルを構築するための検知システム及び方法 Download PDFInfo
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Abstract
Description
TCL=If+[Iair×A/F]+[Iw×W/F]+[Istm×S/F]
式中、Ifは燃料中の汚染物質レベル(ppmw)、Iairは空気中の汚染物質レベル(ppmw)、Iwは注入水中の汚染物質レベル(ppmw)、Istmは注入蒸気中の汚染物質レベル(ppmw)、A/Fはガスタービンの空気対燃料比、S/Fは蒸気対燃料比、W/Fは水対燃料比である。粒子挙動は、ストークス数Stによって捕捉され、式中、
である。
より大きなストークス数Stを有するより大きな粒子は、ガス流路からのより大きな逸脱を示し、したがってブレードの正圧側により頻繁に衝突する。結果として、捕捉率Eは、以下に従ってストークス数Stと共に増加する。
E=0.08855×St-0.0055
半径Rの管内の層流における粒子の拡散は、以下によって説明することができる。
ks/c=0.714×10-3(ks=40μm)に等しい)。
劣化は、主に負圧側の粗さによって決定される。100mmの翼弦長を有する産業用ガスタービンの典型的な圧縮機ブレードの場合、これは71μmの表面粗さに相当する。
12 圧縮機
18 濾過空気
20 圧縮空気
22 燃焼器
24 燃料、静電構成要素
26 燃焼ガス
28 タービン
30 ロータ
32 外部負荷
34 排気フレーム
36 タービン制御システム
100 空気濾過アセンブリ、圧縮機入口濾過システム
102 吸気ダクト
104 吸気
106 入口
110 内部空洞
112 粒子
113 帯電粒子
118 ベーンフィルタ
120 織布フィルタ
124 静電構成要素
126 イオナイザ
130 制御システム、コントローラ
132 センサ
132A センサ
132B センサ
132C センサ
132D センサ
132E センサ
134 導管
135 冷却パイプ
160 インテリジェントモデル
170 測定データ、検出データ
180 既知のデータ
182 構造
184 流体流路
186 位置
186A 入口検出位置
186B 入口検出位置
186C 入口検出位置
186D 入口検出位置
186E 排気検出位置
188 既知の流体流データ
190 実験データ、試験データ
192 現場観察
194 高温ガス経路動作条件及び設計パラメータ
Claims (10)
- タービンシステム(10)の流体流路(184)内にセンサ(132)を配置する位置(186)を決定する方法であって、
既知のデータ値(180)のデータベースに基づいて前記タービンシステム(10)に合わせて調整された流体流のインテリジェントモデル(160)を参照するステップと、
吸気粒子(112)の正確なデータ値の測定を可能にする前記流体流路(184)内の少なくとも1つの位置(186)を決定するステップと、
前記流体流路(184)内の前記少なくとも1つの位置(186)にセンサ(132)を配置するステップと、
前記センサ(132)の前記少なくとも1つの位置(186)において前記吸気粒子(112)の少なくとも1つの測定データ値(170)を測定するステップと
を含み、
前記既知のデータ値(180)のデータベースは、前記タービンシステム(10)の構造(182)、前記流体流路(184)の構造、前記センサ(132)の前記位置(186)、他の既知の流体流データ(188)、試験データ(190)、及び現場観察(192)のうちの少なくとも1つを含み、
前記流体流路(184)内の前記少なくとも1つの位置(186)は、前記センサ(132)上の吸気粒子(112)の蓄積の可能性を最小にする、方法。 - 前記吸気粒子(112)の少なくとも1つの測定データ値(170)を測定する前記ステップの後に、前記タービンシステム(10)の吸気システム(102)の起こり得る破損、前記タービンシステム(10)への吸気粒子(112)の進入量、前記タービンシステム(10)内の汚損、前記タービンシステム(10)の少なくとも一部の侵食、及び前記タービンシステム(10)の性能劣化速度の推定値のうちの少なくとも1つを受信するステップをさらに含む、請求項1に記載の方法。
- 前記流体流路(184)内の少なくとも1つの追加の位置(186)を決定するステップと、
前記少なくとも1つの追加の位置(186)に少なくとも1つの追加のセンサ(132)を配置するステップと、
前記センサ(132)の前記少なくとも1つの追加の位置(186)において前記吸気粒子(112)の追加の少なくとも1つの測定データ値(170)を測定するステップと
をさらに含む、請求項1に記載の方法。 - 前記吸気粒子(112)の少なくとも1つの測定データ値(170)を測定する前記ステップの後に、前記タービンシステム(10)の吸気システム(102)の起こり得る破損、前記タービンシステム(10)への吸気粒子(112)の進入量、前記タービンシステム(10)内の汚損、前記タービンシステム(10)の少なくとも一部の侵食、及び前記タービンシステム(10)の性能劣化速度の推定値のうちの少なくとも1つを受信するステップをさらに含み、
前記インテリジェントシステム(160)は、前記追加の少なくとも1つの測定データ値(170)を解釈して、前記少なくとも1つの測定データ値(170)をエラーチェックし、前記タービンシステム(10)の前記吸気システム(102)の起こり得る破損、前記タービンシステム(10)への吸気粒子(112)の進入量、前記タービンシステム(10)内の汚損、前記タービンシステム(10)の少なくとも一部の侵食、及び前記タービンシステム(10)の性能劣化率の前記少なくとも1つの推定値におけるフォールスポジティブを低減する、請求項3に記載のシステム。 - 流体流の前記インテリジェントモデル(160)を参照する前記ステップの前に、タービンシステム(10)のフィルタ試験アセンブリの少なくとも1つのセンサを前記少なくとも1つのセンサ(132)に再利用することによって、前記フィルタ試験アセンブリをタービンシステム(10)の粒子進入試験アセンブリに変換するステップをさらに含む、請求項3に記載の方法。
- 前記センサ(132)は、静電センサ、赤外線センサ、音波センサ、光学センサ、及びレーザセンサのうちの少なくとも1つを含む、請求項1に記載の方法。
- タービンシステム(10)のための制御システム(130)であって、
少なくとも1つのセンサ(132)から受信した少なくとも1つの測定データ値(170)であって、前記センサ(132)は、前記タービンシステム(10)の吸気システム(102)内の前記タービンシステム(10)の流体流路(184)内に位置決めされる、少なくとも1つの測定データ値(170)と、
前記タービンシステム(10)の構造(182)、前記タービンシステム(10)内の流体流路(184)の構造、前記センサ(132)の位置(186)、他の既知の流体流データ(188)、試験データ(190)、及び現場観察(192)のうちの少なくとも1つを含む既知のデータのデータベース(180)と
を含むインテリジェントモデル(160)を備え、
前記制御システムは前記インテリジェントモデル(160)を参照して、前記吸気システム(102)の起こり得る破損、前記タービンシステム(10)への吸気粒子(112)の進入量、前記タービンシステム(10)内の汚損、前記タービンシステム(10)の少なくとも一部の侵食、及び前記タービンシステム(10)の性能劣化速度の推定値のうちの少なくとも1つを提供する、制御システム(130)。 - 前記少なくとも1つのセンサ(132)は、前記タービンシステム(10)の圧縮機(12)の冷却パイプ(135)内に位置し、前記冷却パイプ(135)内の粒子(112)の少なくとも1つの測定データ値(170)を検出する、請求項7に記載の制御システム(130)。
- 前記インテリジェントシステム(160)は、前記冷却パイプ(135)内の前記粒子(112)の前記少なくとも1つの測定データ値(170)を使用して、前記吸気システム(102)の前記起こり得る破損、前記タービンシステム(10)への吸気粒子(112)の進入量、前記タービンシステム(10)内の汚損、前記タービンシステム(10)の少なくとも一部の侵食、及び前記タービンシステム(10)の性能劣化速度の前記少なくとも1つの推定値に関するエラーチェックを提供する、請求項8に記載の制御システム(130)。
- 前記空気濾過アセンブリ(100)のオペレータに警告すること、前記タービンシステム(10)の動作パラメータを調整すること、及び前記少なくとも1つの推定値が所望の閾値を超える場合に流体流の前記インテリジェントモデル(160)に基づいて前記タービンシステム(10)を停止することのうちの少なくとも1つをさらに含む、請求項7に記載の制御システム(130)。
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