TW425467B - Burner for use in a combustion system and method of premixing fuel and air in the burner - Google Patents
Burner for use in a combustion system and method of premixing fuel and air in the burner Download PDFInfo
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- TW425467B TW425467B TW088102064A TW88102064A TW425467B TW 425467 B TW425467 B TW 425467B TW 088102064 A TW088102064 A TW 088102064A TW 88102064 A TW88102064 A TW 88102064A TW 425467 B TW425467 B TW 425467B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
- F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
- F23M9/02—Baffles or deflectors for air or combustion products; Flame shields in air inlets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/07001—Air swirling vanes incorporating fuel injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2206/00—Burners for specific applications
- F23D2206/10—Turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/14—Special features of gas burners
- F23D2900/14021—Premixing burners with swirling or vortices creating means for fuel or air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Description
425467 _案號 881Q2Q64_年月日_ί±Ξ._ 五、發明說明(1) — 發明說明 本發明係有關於重工業燃氣渦輪機,尤指使用於工業用 燃氣渦輪機之燃燒器;設有燃料/空氣預混合器,有助於 高效率操作,且不會產生非預期之空氣污染排放物。 發明背景 燃氣渦輪機製造商現正投入研究與工程規劃,以製造新 的燃氣渦輪機,可於高效率下操作,且不會產生非預期之 空氣污染排放物。主要的空氣污染排放物,通常是以燃氣 渦輪機燃燒傳統碳氫燃料時,所產生之氧化氮、二氧化碳 與未燃燒之碳氫化合氣。如所知,於吸氣引擎之氮分子氡 化作用,端視位於燃燒系統反應區域之氣體最高溫度而 定。構成氮氧化合氣之化學反應速度,為溫度之指數函 數。如杲能將燃燒室内熱氣之溫度控制的足夠低,將不會 產生高溫的氮氧化合物。 有一項特選方法,係將燃料與空氣於燃燒之前預混合成 稀薄混合氣,即可用以控制引擎燃燒室反應區域之溫度, 能低於高溫氮氧化物之產生溫度。在已預混合稀薄燃燒室 反應區域所存在過量空氣之熱質將可以吸收熱量,由此降 低燃燒產物所增加之溫度,使之低至不會產生高溫氮氧化 物之程度。 對於乾式低排放物燃燒器使用稀薄預混合燃料與空氣1 會產生數項問題。也就是說,位於燃燒室反應區外側之預 混合區段存有可燃燒燃料與空氣混合氣。於預混合區段可 能因為回火之原因,會有發生燃燒之頃向,當火燄由燃燒
O:\57V571S5.ptc 第9頁 425 4 6 7 __案號88102064__年月 B 條正 五、發明說明(2) '" 室反應區傳送進入預混合區段’或者是位於預混合區段之 空氣/燃料混合氣之停留時間與溫度夠久或夠高時,即使 不使用點火器亦會自動點火。在預混合區段所發生之燃燒 順序,將造成排放物控制性能降低或者是兼有之過熱現 像’並且將破壞預混合區段;一般而言該區段非設計用以 承受燃燒之熱量。因此所需要解決之一項問題為,必須防 止回火發生或者是在預混合器因為自動點火所發生燃燒現 像。 ’‘、 此外’燃料/空氣混合氣流出預混合器並且進入燃燒器 之反應區,必須非常均勻,以達到所預期之排放物控制性 能。如果在流場内,當燃料/空氣混合氣之濃度較平均值 為高時’在此等區域之燃燒產物·,將較平均溫度較高,並 產生溫熱氮氧化物。這可能無法達到氮氧化物排放控制之 具體目標,因為端視溫度與所停留時間之組合而定。如果 在流場之某些區域,燃料/空氣混合氣之濃度很明顯的較 平均值為稀薄時,可能發生熄火,將造成碳氫化合物之氧 化失敗’或者是兼可能之二氧化碳無法達到平衡濃度。這 可能無法滿足一氧化碳,或者是另加有之未燃燒碳氫化合 物排放控制之具體目標。因此另一必須解決之問題,為所 產生燃料/空氣混合氣之濃度分佈’在流出預混合器時, 應足夠均勻以滿足排放物性能控制之具體目標。 此外,對於燃氣渦輪機之數種應用,為了能滿足排放物 性能控制之具體目標,在使用大部份碳氫燃料時,必須能 降低燃料/空氣混合濃度,使之盡量趨近於稀薄但可燃燒
O:\57\571S5.ptc 第10頁 4 25 467 修正
案號881Q2⑽A 五_、發明說明(3) 之極限。其結果是,如同降低排放物般亦 速度:其影響士 ’ #薄預混,合燃燒器將較傳統擴散m 燃燒器更不穩疋’且經常產生較高裎度燃燒從動動難^ 活性。這種高程度動態壓力活性,可能具有不利之=力 例如因為磨損或者是疲勞因素、回火或者是媳、火現^, 使燃燒器與渴輪機硬體產生破壞。因此另一項必須解決致 問題為,如何控制燃燒從動動態壓力活性至某—^可^妾兵 程度。 ’ 又 以稀薄、預混合燃料射入器應用於減,少排放物,已普遍 應用於工業’但近二十年來於重工業燃氣渦輪機已有減少 使用之情形。有一項典型範例Γ-如1 9 9 3年1 1月9曰R i c h a rd
Borkowicz 'David Foss 'Daniel Popa 'Warren Mick與
Jeffery Lovett等人所發明之美國專利第5, 25 9, 184號所 揭示,已授權於通用電子公司。類似之裝置,應用於燃氣 渦輪機排放物之降低,.已獲得相當程度之改進。相對於現 有擴散式火燄燃燒器,在降低氧化氮、氮氧化物排放,已 具有倍數之效果甚至於更多’而不需要使用類似蒸氣或者 是水之稀釋劑注入。 這些為了獲得解決排放物性能所得到之效益’已造成必 須解決數項問題之額外花費。特別是’位於該裝置預混合 區段之回火與火燄維持’將造成排放物性能控制之降低, 或者是兼有之過熱所造成之硬體傷害°此外’增加燃燒從 動動態壓力活性之程度’將造成燃燒系統元件可使用壽期 之降低,或者是兼造成燃氣满輪機之其他兀件’因為磨損
425467 ___案號 88102064__年月日 條正__ 五'發明說明(4) .或者疋向循環疲勞因素之失效。此外,必須增加燃氣渦輪 機之操作複雜性,及為了能防止導入高程度動態壓力活 性、回火或者是熄火現像,所增加燃氣渦輪機之操作限 制。 除了這些問題,傳統稀薄預混合燃燒器,無法以最理想 之均勻預混合燃料/空氣’達到最大降低排放物之可能 性。 以稀薄預混合乾式低排放燃燒器降低燃燒從動動態壓力 活性幅度發明之一’已揭示於1 9 97年5月18曰Steven H. B1 ack所發明之美國專利第5 , 2 1 1 , 0 0 4號,並授權於通用電 子公司。本發明所建構之原理為基於先前專利所揭示,係 以同時控制燃料/空氣徑向輪廓與燃料注入壓力降達到最 小化’或者是可以免除由弱極限振盪循環(weak 〇sciilati〇n)所造成之動態壓力放大。 發明之概沭 本發明大幅改善先前之發明,設有獨一的預混合器特 性’相較於現有系統’能改進如前所敘述之所有問題。 本發明之目的在於獲得燃氣渦輪機排放物控制之性能, 優於目前稀薄預混合乾式低排放物燃燒器性能之技術,可 提高目前最先進重工業燃氣渦輪機之燃燒溫度。特別的 是’氮氧化物排放物將被最小化,且不需要妥協於—氧化 碳或者是未燃燒碳氫化合物排放控制之性能。本發明之另 一目的在於改進抗回火特性,與位於預混合器之火敲維 持’優於目前應用於重工業燃氣渦輪機’所採用稀薄預混
O:\57V571S5.ptc 第12頁 425467
__案號 8810206今___年 月 五、發明說明(5) 合乾式低排放燃燒之技術。不赞明之另_ 燒從動動態壓力活性之程度,與增加涵罢效個,降低燃 操作範圍之稀薄媳、火㈣,優於目前;;;;::渦輪機 .丄用於重工章嫩翁,'风 輪機’稀薄預混合器乾式低排放燃燒之技術。 .......... 本發明之上述與其他目的將經由位於箱、人。= ^、 、頂浞合态入口上游 之進氣流量調節器(I FC)實現。進氣流量調節器將可以改 進整個預混合器之氣流速度分配,可以改進燃料/空氣混 合氣流出預混合器之均勻性。預混合器將採用對於Ζ流I 靠近預混合器流場處於發生分佈不均勻時,較不具敏残性 之材料所製成;在介於複式噴嘴燃燒室各燃燒器間之1流 分佈’於使用進氣流量調節器之後將更為均勻。 a 此外’燃料可經由位於預混合|§ ’/尚捲風扇之空氣翼面开; 狀旋轉風葉注入,以取代現有傳統之燃料注入管徑、輪賴 或者是噴嘴。經由旋轉風葉表面將燃料注入方式,可將流 場千擾現像予以最小化不會在預混合器内某一區域發生 燃料/空氣混合氣有停滞或者是打圈循環現像。此等發生 停滞或者是打圈循環之區域,對於先前燃料注入器而言為 更具有侵入性、較小空氣動力特性,其位置可令火燄於預 混合器内定點燃燒。少了這些區域’將令火燄更難以傳送 入預混合器,同時於預混合器内保持燃燒之現像。 此外,徑向燃料/空氣混合濃度分佈之控制,可以經由 二個或者是更多個,位於氣動旋轉風葉表面不同位置之獨 立可控制燃料供應器以完成。用以控制由輪軸至渦捲風扇 尖端外圈輪箍混合氣之相對濃度,其動態壓力活性程度與 稀薄熄火邊界,可以化學計量控制整個燃燒器以之變化,
0:'\57V571S5.ptc 第13頁 425 4 6 / _案號88102064_年月日__ 五、發明說明(6) ' 以配合渦輪機之負載變化。 本發明結合三項氣動力設計之創新以完成燃料/空氣混 合器,將之應用於重工業燃氣渦輪機燃燒系統,可燃燒天 然氣;其所提供空氣/燃料混合區域之均勻性、可防止回 火與控制燃燒從動動態壓力活性,皆具有罕見之性能。這 三項氣動力設計創新項目為:(1 )進氣流量調節器;(2 )經 由空氣渦捲風扇風葉之燃料注入("渦捲喷口 "總成);(3 ) 徑向燃料/空氣濃度分佈輪廓控制。 進氣流量調節器(I FC)包含位於燃料/空氣混合器渦捲 風扇入口之具開孔環狀殼片,空氣必須經由此流至預混合 器。位於殼片之開孔型式,應設計成位於渦捲風扇入口, 且同時環繞徑向與圓周方向處,能提供均勻之氣流分佈型 式。進氣流量壓力降之現像,可令其在渦捲風扇入口產生 所預期之進氣氣流均句分佈,即使在環繞燃燒器入口氣室 處為非均勻流場。. 渦捲喷口總成包含一串列所特選空氣翼面形狀旋轉風 葉,可傳送捲旋動作至經由進氣流量調節器所進入之氣 流。每一空氣翼面包含内部燃料流通路徑,經由貫穿空氣 翼面形狀旋轉風葉壁部之燃料量測開孔,可導入天然氣燃 料進入氣流。以此種方法注入之燃料,可於整個預混合器 提供一種氣動力效果以清除流場。流動停滞或者是兼有之 分離現像與可於現有系統之類似傳統燃料管徑或噴嘴桿燃 料注入方法所附有之更具侵入性再循環現像,將可以防止 發生,因此可以改進預混合器對於回火之防止發生與火燄
O:\57\57185.ptc 第14頁 425467 --—案號 88102064 月 曰 修正 五'發明說明(7) 料與採用二組注入開孔之目 空氣浥合濃度分佈。經由 之維持。 經由二個個別通路注入燃 的’可用以控制於徑向之燃料 介於通路之間燃料流動之分割’可以獲得最佳徑向濃度輪 廓;當機器與燃燒器負載變化時,可用以控制排放物、稀 薄熄火與燃燒從動動態壓力活性° 渦捲噴口之下游,為構成於輪軸與外圈輪箍間之環狀混 合通路。燃料/空氣於此通路完成此合,一種非常均勻混 合氣注入燃燒室反應區,燃燒將發生於此。所產生排放物 〇 將最小化,因為已均勻化之稀薄混合氣,不會產 , JL. .局部過 熱區,這也是產生氮氧化物之區域。在預混合器之中、、 傳統擴散式火皱燃料喷嘴,適用於預混合器所產生 β ^ 氣變為較稀薄以燃燒時,即渦輪機為低負載條 之犯合 所圖之簡草玆jq 〇 本發明之上述與其他具體目標及優點, 下列詳細說明並參考各附圖㈣,其中: 乂由本發明 圖1為依據本發明燃燒器之剖面圖。 圖2為依據本發明預混合器渦 成之展視圖。 人可疋,尚捲賀口總 〇 圖3為如圖 ?戶斤一 π ,, 圖。 不渦捲噴口總成旋轉風葉部份放大展視 _元件符號.說,明 1 進氣流量調節器 2 附加燃料噴射之允> <二氣渦捲喷口總成
第15頁 425 4 b 案號 8810206.1 年 月 ί音正 五、?务明說明(8) 3 環 狀 燃 料 空 氣 混 合 通 路 4 中 央 擴 散 式 火 之 天 然 氣 5 反 應 區 6 向 壓 氣 室 11 具 開 孔 尾 端 封 蓋 1 2 圓 柱 形 外 層 壁 部 13 圓 柱 形 内 層 壁 部 14 環 狀 旋 轉 風 葉 15 流 動 通 路 2 1 主 要 天 然 氣 燃 料 供 應 通 路 2 9 次 要 天 然 氣 燃 料 供 應 通 路 2 3 旋 轉 風 葉 2 4 主 要 天 然 氣 燃 料 注 入 開 孔 2 5 次 要 天 然 氣 燃 料 注 入 開 孔 26 鐘 形 開 a 狀 過 渡 轉 換 ι:Π_ 十又 27 ' 2 8 環 狀 通 路 29 天 然 撚 料 八 〇 3 1 渦 捲 噴 P 輪 軸 延 伸 段 3'2 ;咼 捲 喷 D 環 裹 伸 段 4 1 環 狀 通 路 4 2 具 憎 D *·*、 體 尖 a 4 3 氣 體 開 孔 4 4 風 箱 4 5 凹 穴 嘴總成 〇 〇 關 第丨6頁 __1 425467 _案號 881020G~1_年 月 曰__ 五'發明說明(9) — 2 0 1 輪軸 2 0 2外圈輪箍 最f圭實方e例之言羊細VL βή 如圖1所示,為依據本發明燃燒器之剖面圆,圖2、3所 示為空氣渦捲風扇總成之詳細視圆,其中燃料將穿過整個 旋轉風葉或者是渦捲噴口注八 '在實用上 '一空氣霧化用 没態燃料噴嘴安裝於燃燒器總成之中心處,以提供雙重燃· 料能量;無論如何1這種;夜態燃料喷嘴總成並未構成本發 明之一部份,同時為清楚區別起見1已由圖中刪除:燃燒 器總成依功能分割為四個區段,包含一個進氣流量調節器〇 1 、一個附加天然氣燃料喷射(奂考名稱為渴捲喷口總成)2 之空氣渦捲喷口總成、一個環狀燃料空氣混合通路3與一 佃中央擴散式火燄之天然氣燃料噴嘴總成4。 空氣由高壓氣室6進八燃燒器,高壓氣室除了排氣尾端 外将環繞整個總成,排_氣尾端突入燃燒器反應區5。大部 汾用於燃燒之空氣,經由進氣流量調節器U F C ) I進入預混 合器:進氣流量調節器包含一環狀流動通路]5,為位於直 径門緣處實心圓柱形内層壁部丨3 ,一位於直徑外惻處具開 孔1]柱形外層壁部丨2及一位於上游尾端之具開孔尾瑞封蓋 q 1 i所圍住:流動通路1 5之中心處岛一個或者是多_環狀旋 轉風葉丨4 =預混合器之空氣經由位於尾坞封蓋與圓形外f t部之開孔進八退氣流量調節器1 - 進氣流量調節器丨之功能為用以調整進人預混合器之氣 流速度分佈。進氣流量調節器1之原理 '為在空氣進八預 混合器之前虼予背壓:這可令預混合氣流獲得更佳之角度
第1了 I 425 4 6 7 年
_棄號 88102064 五、發明說明(10) . 分佈。具開孔壁部1 1、1 2將提供施加背壓於系統之功能, 同時可在進氣流量檢測器環輪1 5圓周方向提供均勻流動分 佈;其中旋轉風葉14隨同具開孔壁部動作,在進氣流量檢 測器環輪1 5處完成進氣於徑向之適當分佈。位於具開孔壁 部之適當開孔型式與隨同之環狀旋轉風葉丨4轴向位置,將 端視位於預混合器所預期之流動分佈,及介於複式爐室燃 燒器個別預混合器之間流動分割方式而定。一叶I機流體 動力碼將用以計算流動分佈’用以決定位於具開=壁部之 適畲開孔型式。此項功能之一種適當電腦程式,可由紐約 市長島愛德帕可(Adapco)公司之STAR CD軟體提供。 為了免除靠近位於進“捲喷。2入口外圈輪箱壁部2〇2 f低速度區,介於進氣流量調節器與渦捲噴口之間,將使 用一鐘形開口狀過渡轉換段26。 李:ί:ί燃ί渴輪機所使用複式燃燒器乾式低排放燃燒 輕驗二已發現在環繞燃燒器氣室6處 這:以在介於燃燒器之間導至非均勾氣流V7, ”不均勾之結果為,,農度分佈不均勾之燃料/混 ϊί燃ΐΐ之反應區’ •著造成排放物性能之降低:= 机调即|g 1可以改進介於燃燒器之間與位於個別燃燒器 預混合器環輪内之氣流均勻分佈範圍,同時可以改進整個 M k系統與燃氣渦輪機之排放性能α +1 ϋ燒氣體流出進氣流量調節器1之後,它將進入渦捲 唷0總成2。渦捲噴口總成包含輪轴201與外圈輪箍202,
0:V57V571S5.ptc 苐18頁 425467 ______案號 88102064__年月曰 修正__ 五、發明說明(11) 經由串列空氣翼面形狀旋轉風葉2 3所聯接,將傳送渦捲至 流過預混合器之燃燒空氣。每一旋轉風葉2 3包含一主要天 然氣燒料供應通路2 1,與一次要天然氣燃料供應通路2 2 1 皆穿過位於空氣翼面之心部。這些燃料通路將分配天然氣 燃料至主要天然氣燃料注入開孔2 4,與次要天然氣燃料注 入開孔25 ’皆穿過空氣翼面之壁部。這些燃料注入開孔可 以位於壓力侧邊、抽吸側邊或者是旋轉風葉2 3之二側。天 然氣燃料經由入口 29與環狀通路27、28進入渦捲喷口總成 2,將分別注入主要與次要旋轉風葉通路°天然氣燃料開 始與燃燒氣於满捲喷口總成處混合,並由滿捲噴口輪轴延 伸段3 1與渦捲喷口所環裹伸段32,於環狀通路3完成燃料 /空氣完全混合。在流出環狀通路3後,燃料/空氣混合 氣進入燃燒室反應區5,燃燒將發生於此處。 因為渦捲喷口總成2將經由氣動力旋轉風葉(空氣翼 面)2 3之表面注入天然氣燃料,對於流場之擾動將予以最 小化。所使用之構型,將不會在燃料注入氣流之後,於預 混合器增加任何流動停滯區或者是分離/再循環區。次要 流動將配合此構型予以最小化’其結果是對於燃料/空氣 混合氣之控制,有助於混合氣輪廓之分佈。流場將可由燃 料注入區至預混合器釋放入燃燒器反應區5之間,保有氣 動力清除效果。在反應區’由過捲噴口 2所導出之捲旋, 將造成中心淚渦,由此產生流動之再循環。這可以在燃燒 室反應區5之前端保持火燄穩定。無論如何,只要在預混 合器之速度保持在擾流火燄遞進速度以上,火燄將不會遞
O:\57\57185.ptc 苐19頁 4 254 c 7 案號 88102064 年 月 曰 修正 五、發明說明(12) _ 進入預混合器(也就是回火);在預混合器不會有流動分離 或者是再循環現像,即使因為暫時發生之流動逆轉情形 下’火燄亦不會於預混合器定點燃燒。渦捲喷口 2之功能 將用以防止回火發生與維持火燄,在應用方面相當重要, 因為這些現像之發生,將造成預混合器過熱與後續之破壞 發生。 如圖2、3所示為渦捲喷口之詳細視圖。有位於每一旋轉 風葉2 3表面之二組天然氣燃料注入開孔《為主要氣體燃料 注入開孔2 5。燃料經由主要天然氣通路2 1與次要天然氣通 路2 2 ’輸入這些燃料注入開孔2 5。經由此等二組注入路徑 之嫉料流動為個別獨立控制,有助於控制由渦捲噴口輪軸 2 0 1至渦捲噴口外圈輪箍2 〇 2於徑向之燃料/空氣濃度分佈 輪廊。 如所知*徑向燃料濃度輪廓對於稀薄預混合乾式低排放 燃燒器之性能伴演相當重要之角色,對於燃燒從動動態壓 力活,、排放物性能與轉向之能力具有相當程度之影響 ^彳:向輪廓控制’在燃料熱值(成份)或者是供應溫度有 茇化$ 可應用於天然氣體積流動速度於變化條件下,提 供「種,償之方法這項新奇燃料系統之一項額外優點’ ^對於-人要燃料通路負載遮斷之功能,因為對於輪軸處過 嘏之構造,可能在達到全負載之燃料流動於某一百分比下 保持燃燒。 4在^' #燒裔總成之中心處’為傳統擴散式火燄燃料喷嘴 °又具槽σ氣體尖口 4 2,可以由環狀通路4丨吸入燃燒
O:\5A57185.ptc 苐20頁 4 2 5 -
425467 案號 88102064 年 月 曰 修正 五、發明說明(14) 免除由弱極限振盪循環所造成之動態壓力放大。 本發明所敘述為關於現有最實用與具體實例,如所知, 將不限制於所揭示之具體實例;相反的,應涵蓋不同修改 與申請專利範圍之精神與範圍所揭示之相等配置。
0;\57\57185.ptc 第22頁
Claims (1)
- 425 4 6 案號 88102064 六、申請專利範圍 : 1. 一種使用於重工業燃氣渦輪機燃燒系統之燃燒器,該 燃燒器包含: 空氣預混合益 合通路,燃料/空氣預 混合氣,俾注入一燃燒 量調節器,配置於燃料 調節器用以控制徑向與 調節器包含一具開孔圓 混合器之上游,具開孔 其係基於所預期之流動 利範圍第1項之燃-燒器 捲喷口總成係位於入口 ,可以傳送渦捲至進氣 利範圍第2項之燃燒器 燃料流動通路,燃料入 一燃料/ 口與一環狀混 混合成一均勻 一進氣流 氣流量 氣流量 空氣預 型式, 申請專 含一滿 轉風葉 申請專 内置之 動通路 申請專 組内置 料流動 申請專 相對應 ,燃料 申請專 主要燃 對應主 入口 > 佈,進 燃料/ 定開孔 2 ·如 合器包 數個旋 3, 如 包含一 燃料流 4. 如 包含二 料,燃 5. 如 將經由 入進氣 6, 如 包含一 料至相 設有一空氣入口、一燃料入 混合器將燃料與空氣 室反應區;及 /空氣預混合器空氣 圓周方向之進氣分 柱形外層壁,其係在 圓形外層壁設有一既 分佈。 其中燃料/空氣預混 下游,渦捲噴口包含 〇 其中每一旋轉風葉 口導入燃料進入内置 利範圍第2項之燃燒器,其中每一旋轉風葉 之燃料流動通路,可以由燃料入口輪入燃 通路將導引燃料進入進氣。 利範圍第4項之燃燒器,其中燃料流動通路 於燃料流動通路之燃料量測開孔導引燃料進 量測開孔穿過相對應之旋轉風葉壁部。 利範圍第2項之燃燒器,其中每一旋轉風葉 料通路,與一次要燃料通路,將分別輸送燃 要燃料注入開孔與次要燃料注入開孔,燃燒O:\57V57iS5.ptc 苐23 I 25 4 6 / 月 案虼88丨02ί)Π1 τ'申請專钊範a ' 器另包含控制搆造,相通於主要燃料通路與次要燃料通 路,可以獨立控制燃料流過主要燃料通路與次要燃料通 路.: 7.如申請專到範圍第6項之燃燒器,其中控制構造包含 總成之輪軸至一渦捲噴 有裝置‘可用以控制由一舛捲 口總成外圈輪箍之徑向燃料/空氣混合濃度分怖斡廓; 8. 如申請專利範圍第1項之燃燒器,其中進氣流量調節 器另包含一環狀流動通路,為一實心圓柱形π層壁部、具 開孔圓柱形外層壁部與一具開孔尾端封蓋所圍住: 〇 9. 一種使用於重工業燃氣渦輪機燃燒系統燃燒器之燃料 與空氣預混合方法,包含下列步驟: U )以進氣流量調節器控制徑向與圓周線方向之進氣 分ί东: 〔b )獨立控制流經旋轉風禁中主要燃料注八開孔及次 要燃料注八開孔之燃料,該等旋轉風葉係設在進氣流量調 節器下游處之渦捲喷口總成闪.俾控制來自該渦捲喷口總 成之捏向燃料/空氣混合濃度分佈輪琢:及 〇 U )將燃料與空氣混合成一均勻混合氣,用以注八一 燃燒室反應區:萁2ί頁
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TW088102064A TW425467B (en) | 1998-02-10 | 1999-04-07 | Burner for use in a combustion system and method of premixing fuel and air in the burner |
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US (1) | US6438961B2 (zh) |
EP (1) | EP0936406B1 (zh) |
JP (1) | JP4205231B2 (zh) |
KR (1) | KR100550689B1 (zh) |
DE (1) | DE69916911T2 (zh) |
TW (1) | TW425467B (zh) |
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- 1999-02-10 DE DE69916911T patent/DE69916911T2/de not_active Expired - Lifetime
- 1999-02-10 KR KR1019990004695A patent/KR100550689B1/ko not_active IP Right Cessation
- 1999-04-07 TW TW088102064A patent/TW425467B/zh not_active IP Right Cessation
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CN101818909A (zh) * | 2009-02-09 | 2010-09-01 | 通用电气公司 | 燃料喷嘴歧管 |
CN101818909B (zh) * | 2009-02-09 | 2014-03-12 | 通用电气公司 | 燃料喷嘴歧管 |
TWI651142B (zh) * | 2015-12-30 | 2019-02-21 | 逢甲大學 | 混氣式電化學微噴射加工方法及其裝置 |
TWI662184B (zh) * | 2018-11-22 | 2019-06-11 | 國家中山科學研究院 | 微渦輪多種燃氣使用之高效預混燃氣噴嘴 |
Also Published As
Publication number | Publication date |
---|---|
US20010052229A1 (en) | 2001-12-20 |
EP0936406A3 (en) | 2000-01-19 |
KR100550689B1 (ko) | 2006-02-08 |
EP0936406B1 (en) | 2004-05-06 |
JPH11337068A (ja) | 1999-12-10 |
US6438961B2 (en) | 2002-08-27 |
KR19990072562A (ko) | 1999-09-27 |
JP4205231B2 (ja) | 2009-01-07 |
DE69916911D1 (de) | 2004-06-09 |
EP0936406A2 (en) | 1999-08-18 |
DE69916911T2 (de) | 2005-04-21 |
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