專利名稱：：用于壓縮機(jī)的翼片形狀的制作方法
技術(shù)領(lǐng)域：
：本發(fā)明涉及用于燃?xì)鉁u輪機(jī)轉(zhuǎn)子葉片的翼片。特別地，本發(fā)明涉及用于壓縮機(jī)的不同級(jí)的壓縮機(jī)翼片外形。特別地，本發(fā)明涉及用于壓縮機(jī)不同級(jí)的進(jìn)口導(dǎo)向輪葉、轉(zhuǎn)子、或者定子的壓縮機(jī)翼片外形。
背景技術(shù)：
：在燃?xì)鉁u輪機(jī)中，在燃?xì)鉁u輪機(jī)的流動(dòng)路徑段的每個(gè)級(jí)應(yīng)該滿足許多系統(tǒng)要求以滿足設(shè)計(jì)目標(biāo)。這些設(shè)計(jì)目標(biāo)包括，但不限于，總體改善的效率和翼片負(fù)荷能力。例如，且決不限制本發(fā)明，壓縮機(jī)定子的葉片應(yīng)該達(dá)到用于特定級(jí)的熱的和機(jī)械的操作要求。此外，例如，且決不限制本發(fā)明，壓縮機(jī)轉(zhuǎn)子的葉片應(yīng)該達(dá)到用于特定級(jí)的熱的和機(jī)械的操作要求。
發(fā)明內(nèi)容依照本發(fā)明的一個(gè)示范性的方面，制造的物品具有大致依照表l中陳列的笛卡兒坐標(biāo)值X、Y和Z的標(biāo)稱外形。其中X和Y為英寸距離，當(dāng)通過(guò)平滑連續(xù)弧線將它們連接時(shí)，其在每個(gè)英寸距離Z處限定翼片外形段。在Z距離處的外形段彼此平滑地結(jié)合以形成完整的翼片形狀。依照本發(fā)明的另一示范性的方面，壓縮才幾包"fe壓縮初4侖。該壓縮4幾輪具有多個(gè)制造的物品。每個(gè)制造的物品包括具有翼片形狀的翼片。翼片包括大致依照表l中陳列的笛卡兒坐標(biāo)值X、Y和Z的標(biāo)稱外形，其中X和Y為英寸距離，當(dāng)通過(guò)平滑連續(xù)弧線將它們連接時(shí)，其在每個(gè)英寸距離Z處限定翼片外形段。在Z距離處的外形段彼此平滑地結(jié)合以形成完整的翼片形狀。依照本發(fā)明的示范性的又一方面，壓縮才幾包括具有多個(gè)制造的物品的壓縮機(jī)輪。每個(gè)制造的物品包括具有大致依照表1中陳列的笛卡兒坐標(biāo)值X、Y和Z的未涂層的標(biāo)稱翼片外形的翼片，其中X和Y為英寸距離，當(dāng)通過(guò)平滑連續(xù)弧線將它們連接時(shí)，其在每個(gè)英寸距離Z處限定翼片外形段。在Z距離處的外形段彼此平滑地結(jié)合以形成完整的翼片形狀。圖1為通過(guò)燃?xì)鉁u輪機(jī)的多級(jí)的壓縮機(jī)流動(dòng)路徑的示意性示范圖且圖示依照本發(fā)明的實(shí)施例的示范性翼片；圖2和3為依照本發(fā)明的實(shí)施例的轉(zhuǎn)子葉片的分別的透視示范圖，其轉(zhuǎn)子葉片翼片連同其平臺(tái)和大致或者接近軸向進(jìn)入燕尾榫連接圖示5圖4和5為分別以從翼片的壓力和吸力側(cè)的一般周向方向觀察的圖2的轉(zhuǎn)子葉片和相關(guān)平臺(tái)及燕尾榫連接的側(cè)面正視圖6為一般地在圖5中大約在線6-6上截取的轉(zhuǎn)子葉片翼片的截面圖7為依照本發(fā)明示范性的實(shí)施例的轉(zhuǎn)子葉片的透視圖，其上添加了坐標(biāo)系；和圖8為依照本發(fā)明示范性的實(shí)施例的定子葉片的透視圖，其上添加了坐標(biāo)系。具體實(shí)施例方式現(xiàn)在參見附圖，圖1圖示包括多個(gè)壓縮機(jī)級(jí)的燃?xì)鉁u輪機(jī)壓縮機(jī)2的軸向壓縮機(jī)流動(dòng)路徑1。壓縮機(jī)級(jí)在圖中順序標(biāo)記。壓縮機(jī)流動(dòng)路徑包括任何數(shù)量的轉(zhuǎn)子級(jí)和定子級(jí)，例如18。然而，轉(zhuǎn)子和定子級(jí)的精確數(shù)量是工程設(shè)計(jì)的選擇。如本發(fā)明所實(shí)施的，能夠在燃燒室中提供任何數(shù)量的轉(zhuǎn)子和定子級(jí)。17個(gè)轉(zhuǎn)子級(jí)僅是一個(gè)示范性的渦輪機(jī)設(shè)計(jì)。18個(gè)轉(zhuǎn)子級(jí)并不意味以任何方式限制本發(fā)明。壓縮機(jī)轉(zhuǎn)子葉片傳遞動(dòng)能到空氣流且因此致使通過(guò)壓縮機(jī)的希望的壓力上升。直接在轉(zhuǎn)子翼片后面的是定子翼片級(jí)。轉(zhuǎn)子和定子翼片都旋轉(zhuǎn)空氣流，減緩空氣流速度(以各自的翼片參考系)，且產(chǎn)生空氣流的靜壓力的上升。翼片的構(gòu)造(連同其與周圍的翼片的相互作用)，包括其周向表面，提供了在本發(fā)明的其他希望的方面中的級(jí)空氣流效率、提高的空氣力學(xué)、從級(jí)到級(jí)的平滑層流、減少的熱應(yīng)力、提高的級(jí)的相互關(guān)系以有效地從級(jí)到級(jí)流通空氣流、和減少的機(jī)械應(yīng)力。典型地，多排轉(zhuǎn)子/定子級(jí)堆疊在軸向流動(dòng)壓縮機(jī)中以達(dá)到希望的排出-進(jìn)口壓力比。轉(zhuǎn)子和定子翼片能夠通過(guò)合適的接附構(gòu)造，經(jīng)常已知為"根部"、"基部"或者"燕尾榫"(參見圖2-5)固定到轉(zhuǎn)子輪或者定子殼體。壓縮機(jī)2的級(jí)在圖1中示范性地圖示。壓縮機(jī)2的級(jí)包括多個(gè)周向間隔的安裝在轉(zhuǎn)子輪51上的轉(zhuǎn)子葉片22和多個(gè)周向間隔的接附到靜態(tài)壓縮機(jī)殼體59的定子葉片23。每個(gè)轉(zhuǎn)子輪接附到后驅(qū)動(dòng)軸58，其連接到發(fā)動(dòng)機(jī)的渦輪機(jī)段。轉(zhuǎn)子葉片和定子葉片位于壓縮機(jī)的流動(dòng)路徑1中。通過(guò)壓縮才幾流動(dòng)路徑1的空氣流的方向，如本發(fā)明實(shí)施的，由箭頭60(圖1)指示。壓縮機(jī)2的該級(jí)僅作為本發(fā)明范圍內(nèi)的壓縮機(jī)2的級(jí)的示范。圖示和描述的壓縮機(jī)2的級(jí)并不意味以任何方式限制本發(fā)明。轉(zhuǎn)子葉片22安裝在構(gòu)成后驅(qū)動(dòng)軸58的部分的轉(zhuǎn)子輪51上。如圖2-6圖示的，每個(gè)轉(zhuǎn)子葉片22提供有平臺(tái)61,和用于與轉(zhuǎn)子輪51上的互補(bǔ)形狀的配合燕尾榫(未顯示)連接的大致或者接近軸向進(jìn)入燕尾榫62。然而，如本發(fā)明實(shí)施的，軸向進(jìn)入燕尾榫可以提供有翼片外形。如圖2-6中圖示的，每個(gè)轉(zhuǎn)子葉片22包括轉(zhuǎn)子葉片翼片63。從而，在翼片的一般形狀中，在從平臺(tái)61的中點(diǎn)處的翼片根部64到轉(zhuǎn)子葉片尖端65的任何截面處，每個(gè)轉(zhuǎn)子葉片22具有轉(zhuǎn)子葉片翼片外形66(圖6)。為了限定轉(zhuǎn)子葉片翼片的翼片形狀，提供空間中獨(dú)特的點(diǎn)集合或者軌跡。該獨(dú)特的點(diǎn)集合或者軌跡滿足級(jí)要求，從而級(jí)能夠制造。獨(dú)特的點(diǎn)軌跡也滿足希望的用于級(jí)效率和減少的熱和機(jī)械應(yīng)力的要求。點(diǎn)軌跡通過(guò)在使壓縮機(jī)能夠以有效、安全和平穩(wěn)的方式運(yùn)行的空氣動(dòng)力學(xué)和機(jī)械負(fù)荷之間反復(fù)得到。如本發(fā)明實(shí)施的，軌跡限定轉(zhuǎn)子葉片翼片外形且能夠包括相對(duì)于發(fā)動(dòng)機(jī)的旋轉(zhuǎn)軸線的點(diǎn)集合。例如，能夠提供點(diǎn)集合以限定轉(zhuǎn)子葉片翼片外形。在下表中給出的笛卡兒坐標(biāo)系X、Y和Z值在沿其長(zhǎng)度不同位置處限定轉(zhuǎn)子葉片翼片的外形。如本發(fā)明實(shí)施的，翼片能夠作為第8級(jí)翼片定子輪葉得到應(yīng)用。X、Y和Z坐標(biāo)的坐標(biāo)值以英寸陳列，盡管當(dāng)值適當(dāng)?shù)剞D(zhuǎn)換時(shí)可以使用尺寸的其他單位。這些值排除平臺(tái)的圓角區(qū)。笛卡兒坐標(biāo)系具有正交相關(guān)的X、Y和Z軸線。如用于轉(zhuǎn)子的圖7和用于定子的圖8中圖示，X軸線平行于壓縮機(jī)葉片的燕尾榫軸線，其與發(fā)動(dòng)機(jī)中心線成角度。正的X坐標(biāo)值為軸向向后，例如壓縮機(jī)的排氣端。正的Y坐標(biāo)值垂直于燕尾榫軸線定向。正的Z坐標(biāo)值對(duì)于轉(zhuǎn)子葉片定向?yàn)閺较蛳蛲獬砥募舛?，其朝壓縮機(jī)的靜態(tài)殼體，且對(duì)于定子葉片定向?yàn)閺较蛳騼?nèi)朝壓縮機(jī)的發(fā)動(dòng)機(jī)中心線。如圖5中圖示，僅用于參考目的，通過(guò)沿堆疊軸線的翼片和平臺(tái)的交叉處建立點(diǎn)0。在翼片的示范性的實(shí)施例中，點(diǎn)0定義為參考段，其中上表的Z坐標(biāo)為0.000英寸，其為從發(fā)動(dòng)機(jī)或者轉(zhuǎn)子中心線的設(shè)定的事先確定的距離。通過(guò)在垂直于X、Y平面的Z方向的選定位置處定義X和Y坐標(biāo)值，在沿翼片長(zhǎng)度的每個(gè)Z距離處轉(zhuǎn)子葉片翼片的外形段能夠確定，例如但不限于圖6中的外形段66。通過(guò)用平滑連續(xù)弧線連接X和Y值，在每個(gè)距離Z處的每個(gè)外形段66能夠固定。在距離Z之間的不同表面位置的翼片外形通過(guò)平滑地彼此連接相鄰的外形段66決定，從而形成翼片外形。這些值代表在環(huán)境的、未操作或者非熱的條件的翼片外形且用于未涂層的翼片。表值產(chǎn)生且顯示到3個(gè)小數(shù)位以決定翼片的外形。存在典型的制造公差以及涂層，這在實(shí)際翼片外形中需要考慮。從而，給定的外形值用于標(biāo)稱翼片。因此可以理解，+/-典型制造/>差，例如+/-值，包括任何涂層厚度，可添加到X和Y值。從而，在垂直于沿翼片外形任何表面位置的方向，大約+/-0.160英寸的距離限定用于轉(zhuǎn)子葉片翼片設(shè)計(jì)和壓縮機(jī)的翼片外形包絡(luò)線。換句話說(shuō)，如本發(fā)明實(shí)施的，在垂直于沿翼片外形任何表面位置的方向，大約+/-0.160英寸的距離限定在標(biāo)稱冷的或者室溫的實(shí)際翼片表面上的測(cè)量點(diǎn)和在相同溫度下這些點(diǎn)的理想位置的變化范圍。如本發(fā)明實(shí)施的，轉(zhuǎn)子葉片翼片設(shè)計(jì)對(duì)此變化范圍是穩(wěn)鍵的而不損害機(jī)械和空氣動(dòng)力功能。下表l中給定的坐標(biāo)值提供用于示范性的第8級(jí)翼片定子輪葉的標(biāo)稱外形包絡(luò)線。表1<table>tableseeoriginaldocumentpage7</column></row><table>X-LOCY-LOCZrLOCX-LOCY-LOC&LOCX-LOCY-LOCZ^LOC1.416-0.7260.625-1.5410.7790.625-0.8860.8450.6251.415-0,7280.625-1.6020,8590.625-0.7940.7750.6251.414-0.7310.625-1.6570.9390.625-0.70.7030.6251.41-0.7370.625-1.7041.0130.625-0.6050,6310.6251.403-0.7450.625-1.7431.0830.625-0.5090.560.6251.388-0.7560.625-1.7761.1460.625-0.4140.4890.6251.363-0.7610.625-1.8031.2030.625-0.3180.4180.6251.33-0.7530.625-1,8241.2540.625-0.2210.3490.6251.291-0.740.625-1.8371.2990.625-0.1250.2790.6251.239-0.7230.625-1.8461.3370.625-0.0280.2110.6251.1790.7040.625-1.851.370.6250.070.1430.6251.115-0.68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n)利要求1所述的制造的物品，其中該物品包括翼片(22,23)。3.根據(jù)權(quán)利要求2所述的制造的物品，其中所述物品形狀位于垂直于任何物品表面位置的方向土0.160英寸內(nèi)的包絡(luò)線中。4.根據(jù)權(quán)利要求1所述的制造的物品，其中該物品包括轉(zhuǎn)子(22)。5.—種包括具有多個(gè)制造的物品的壓縮機(jī)輪的壓縮機(jī)，每個(gè)所述的制造的物品包括具有翼片形狀的翼片，所述翼片具有大致依照表l中陳列的笛卡兒坐標(biāo)值X、Y和Z的標(biāo)稱外形，其中X和Y為英寸距離，當(dāng)通過(guò)平滑連續(xù)弧線將它們連接時(shí)，其在每個(gè)英寸距離Z處限定翼片外形段，在Z距離處的外形段彼此平滑地結(jié)合以形成完整的翼片形狀(22,23)。6.根據(jù)權(quán)利要求5所述的壓縮機(jī)，其中制造的物品包括轉(zhuǎn)子(22)。7.—種包括具有多個(gè)制造的物品的壓縮機(jī)輪(51)的壓縮機(jī)(2),每個(gè)所述的制造的物品包括具有大致依照表1中陳列的笛卡兒坐標(biāo)值X、Y和Z的未涂層的標(biāo)稱翼片外形的翼片，其中X和Y為英寸距離，當(dāng)通過(guò)平滑連續(xù)弧線將它們連接時(shí)，其在每個(gè)英寸距離Z處限定翼片外形段，在Z距離處的外形段^f皮此平滑地結(jié)合以形成完整的翼片形狀(22,23)，X和Y距離可以作為相同常數(shù)或者數(shù)量的函數(shù)按比例調(diào)節(jié)，以提供按比例增加或者按比例減小的轉(zhuǎn)子葉片翼片(22,23)。8.根據(jù)權(quán)利要求7所述的壓縮機(jī)(2)，其中制造的物品包括轉(zhuǎn)子(22)。9.根據(jù)權(quán)利要求7所述的壓縮機(jī)(2)，其中所述的翼片形狀位于垂直于任何翼片表面位置的方向土0.160英寸內(nèi)的包絡(luò)線中。全文摘要用于壓縮機(jī)的翼片形狀，其提供制造的物品，具有大致依照表1中陳列的笛卡兒坐標(biāo)值X、Y和Z的標(biāo)稱外形。其中X和Y為英寸距離，當(dāng)通過(guò)平滑連續(xù)弧線將它們連接時(shí)，其在每個(gè)英寸距離Z處限定翼片外形段。在Z距離處的外形段彼此平滑地結(jié)合以形成完整的翼片形狀(22，23)。文檔編號(hào)F04D29/38GK101169136SQ20071018146公開日2008年4月30日申請(qǐng)日期2007年10月25日優(yōu)先權(quán)日2006年10月25日發(fā)明者P·金,S·哈斯金斯申請(qǐng)人:通用電氣公司