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      用于壓縮機(jī)的翼片形狀的制作方法

      文檔序號(hào):5458378閱讀:261來源:國(guó)知局

      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)翼片型面。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)翼片型面。
      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,且決不作為對(duì)本發(fā)明的限制,壓縮機(jī)定子的葉片應(yīng)該達(dá)到特定級(jí)的熱和機(jī)械方面的運(yùn)行要求。此外,例如,且決不作為對(duì)本發(fā)明的限制,壓縮機(jī)轉(zhuǎn)子的葉片應(yīng)該達(dá)到特定級(jí)的熱和機(jī)才戒方面的運(yùn)4亍要求。
      發(fā)明內(nèi)容依照本發(fā)明的一個(gè)示范性的方面,制造制品具有大致依照表l中列出的笛卡兒坐標(biāo)值X、Y和Z的標(biāo)稱型面。其中X和Y為英寸距離,當(dāng)通過平滑連續(xù)弧線將它們連接時(shí),其在每個(gè)英寸距離Z處限定翼片型面段。在所述Z距離處的型面段彼此平滑地連接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,提供了一種包括壓縮機(jī)輪的壓縮機(jī)。該壓縮機(jī)輪具有多個(gè)制造制品。每個(gè)制造制品包括具有翼片形狀的翼片。翼片包括大致依照表1中列出的笛卡兒坐標(biāo)值X、Y和Z的標(biāo)稱型面,其中X和Y為英寸距離,當(dāng)通過平滑連續(xù)弧線將它們連接時(shí),其在每個(gè)英寸距離Z處限定翼片型面段。在所述Z距離處的型面段彼此平滑地連接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,提供了一種包括具有多個(gè)制造制品的壓縮機(jī)輪的壓縮機(jī)。每個(gè)制造制品包括具有大致依照表1中列出的笛卡兒坐標(biāo)值X、Y和Z的未涂敷的標(biāo)稱翼片型面的翼片,其中X和Y為英寸距離,當(dāng)通過平滑連續(xù)弧線將它們連接時(shí),其在每個(gè)英寸距離Z處限定翼片型面段。在所述Z距離處的型面段彼此平滑地連接以形成完整的翼片形狀。圖1為通過燃?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示出了依照本發(fā)明的實(shí)施例的示范性翼片;圖2和3分別為依照本發(fā)明的實(shí)施例的轉(zhuǎn)子葉片的透視示范圖,其示出了轉(zhuǎn)子葉片翼片連同其平臺(tái)和大致或者接近軸向進(jìn)入的榫接部連接;圖4和5為分別以從翼片的壓力側(cè)和吸力側(cè)的大致周向方向觀察的圖2的轉(zhuǎn)子葉片和相關(guān)平臺(tái)及榫接部連接的側(cè)視圖6為大致沿圖5中的線6-6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4見圖,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示出了包括多個(gè)壓縮機(jī)級(jí)的燃?xì)鉁u輪機(jī)壓縮機(jī)2的軸向壓縮才幾流動(dòng)3各徑1。壓縮才幾級(jí)在圖中順序標(biāo)記。壓縮4幾流動(dòng)路徑可包括任何數(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)子級(jí)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)子葉片將動(dòng)能傳遞給空氣流且因此獲得流經(jīng)壓縮機(jī)的所希望的壓力上升。緊接在轉(zhuǎn)子翼片后面的是定子翼片級(jí)。轉(zhuǎn)子翼片和定子翼片都使得空氣流轉(zhuǎn)向,(在各自的翼片參考系中)減緩空氣流速度,且產(chǎn)生空氣流的靜壓力的上升。在本發(fā)明的其他所希望的方面中,翼片的構(gòu)造(連同其與周圍的翼片的相互作用)及其周向表面對(duì)于級(jí)空氣流效率而言提供了改善的空氣力學(xué)、從級(jí)到級(jí)的平滑層流、減小的熱應(yīng)力、改善的級(jí)的相互關(guān)系以有效地使得從空氣流在級(jí)間流通、以及減小的機(jī)械應(yīng)力。典型地,多排轉(zhuǎn)子/定子級(jí)疊置在軸向流動(dòng)壓縮機(jī)中以達(dá)到希望的排出-進(jìn)入的壓力比。轉(zhuǎn)子翼片和定子翼片能夠借助合適的接附構(gòu)造從而固定到轉(zhuǎn)子輪或者定子殼體上,例如通常已知的"根部"、"基部"或者"榫接部,,(參見圖2-5)。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上的定子葉片23。每個(gè)轉(zhuǎn)子輪接附到后驅(qū)動(dòng)軸58上,其連接到發(fā)動(dòng)機(jī)的渦輪機(jī)段上。轉(zhuǎn)子葉片和定子葉片位于壓縮機(jī)的流動(dòng)路徑1中。如本發(fā)明實(shí)施的,流經(jīng)壓縮才幾流動(dòng)路徑1的空氣流的方向由箭頭60所示(參見圖1)。壓縮機(jī)2的所述級(jí)僅作為本發(fā)明范圍內(nèi)的壓縮機(jī)2的級(jí)的示范。所示的和所述的壓縮機(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安裝在形成后驅(qū)動(dòng)軸58的一部分的轉(zhuǎn)子輪51上。如圖2-6圖示的,每個(gè)轉(zhuǎn)子葉片22設(shè)置有平臺(tái)61和大致軸向或者接近軸向進(jìn)入的榫接部62,其用于與轉(zhuǎn)子輪51上的互補(bǔ)形狀的配合榫接部(未示出的)連接。然而,如本發(fā)明實(shí)施的,軸向進(jìn)入的榫接部可以設(shè)置有翼片型面部分。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。這樣,在翼片的總體形狀中從平臺(tái)61的中點(diǎn)處的翼片根部64到轉(zhuǎn)子葉片末端65的任何截面處,每個(gè)轉(zhuǎn)子葉片22具有轉(zhuǎn)子葉片翼片型面(airfoilprofile)66(參見圖6)。為了限定轉(zhuǎn)子葉片翼片的翼片形狀,提供了空間中獨(dú)特的點(diǎn)的集合或者軌跡。該獨(dú)特的點(diǎn)的集合或者軌跡滿足級(jí)的要求,從而使得所述級(jí)能夠制造。獨(dú)特的點(diǎn)軌跡也滿足希望的對(duì)于級(jí)效率和減小的熱和機(jī)械應(yīng)力的要求。點(diǎn)的軌跡借助使壓縮機(jī)能夠以有效、安全和平穩(wěn)的方式運(yùn)行的空氣動(dòng)力負(fù)荷和機(jī)械負(fù)荷之間的迭代得到。如本發(fā)明實(shí)施的,該軌跡限定轉(zhuǎn)子葉片翼片型面,且可包括相對(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)子葉片翼片型面。在下表中給出的笛卡兒坐標(biāo)系X、Y和Z數(shù)值限定出轉(zhuǎn)子葉片翼片在沿其長(zhǎng)度的不同位置處的型面。如本發(fā)明實(shí)施的,發(fā)現(xiàn)該翼片能夠作為第6級(jí)翼片轉(zhuǎn)子葉片得到應(yīng)用。X、Y和Z坐標(biāo)的坐標(biāo)值以英寸列出,盡管當(dāng)這些數(shù)值適當(dāng)?shù)剞D(zhuǎn)換時(shí)可以使用其它的尺寸單位。這些值不包括平臺(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)葉片的榫接部軸線,其與發(fā)動(dòng)機(jī)中心線成一角度。正的x坐標(biāo)值為軸向向后,例如朝向壓縮機(jī)的排氣端。正的Y坐標(biāo)值定向成垂直于榫接部軸線。正的Z坐標(biāo)值對(duì)于轉(zhuǎn)子葉片定向?yàn)閺较蛳蛲獬砥哪┒?,該末端朝向壓縮機(jī)的靜態(tài)殼體,且對(duì)于定子葉片定向?yàn)閺较蛳騼?nèi)朝向壓縮機(jī)的發(fā)動(dòng)機(jī)中心線。如圖5中圖示,僅用于參考目的,穿過沿疊置軸線的翼片和平臺(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)-O定義為參考段,其中上表的Z坐標(biāo)為0.000英寸,其為離開發(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。通過在垂直于X、Y平面的Z方向上的選定位置處定義X和Y坐標(biāo)值,能夠確定在沿翼片長(zhǎng)度的每個(gè)Z距離處轉(zhuǎn)子葉片翼片的型面段,例如但不限于圖6中的型面段66。通過用平滑連續(xù)弧線連接X和Y值,能夠固定在每個(gè)距離Z處的每個(gè)型面段66。在距離Z之間的不同表面位置的翼片型面通過平滑地彼此連接相鄰的型面^爻66來決定,從而形成翼片型面。這些數(shù)值代表在周圍環(huán)境中的、未運(yùn)行的、或者非熱條件下的翼片型面并且用于未涂敷的翼片。表格數(shù)值產(chǎn)生且顯示到3個(gè)小數(shù)位以便確定翼片的型面。存在典型的制造公差以及涂層,這在實(shí)際翼片型面中需要考慮。因此,對(duì)于型面給定的凝:i"直是對(duì)于標(biāo)稱翼片(nominalairfoil)而言的。因此可以理解,+/-典型制造公差例如+/-值以及任何涂層厚度可添加到X和Y值中。因此,在垂直于沿翼片型面的任何表面位置的方向上的大約+/-0.160英寸的距離限定出用于轉(zhuǎn)子葉片翼片結(jié)構(gòu)和壓縮機(jī)的翼片型面包絡(luò)線。換句話說,如本發(fā)明實(shí)施的,在垂直于沿翼片型面的任何表面位置的方向上大約+/-0.160英寸的距離限定出在標(biāo)稱的冷的或者室溫的實(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)子葉片翼片結(jié)構(gòu)對(duì)此變化范圍是穩(wěn)定的,而不損害機(jī)械和空氣動(dòng)力功能。下表1中給出的坐標(biāo)值提供了用于示范性的第6級(jí)翼片轉(zhuǎn)子葉片的標(biāo)稱的型面包絡(luò)線。<table>tableseeoriginaldocumentpage7</column></row><table>Z-LOC<formula>formulaseeoriginaldocumentpage8</formula>S"2^2P!T-t。寸o^。Noovor-vooo^ovooN寸^cstt!"tt卜卜f""-卜卜^0卜寸—00寸^。卜OOJ寸wnvOr^卜r^卜卜r^r^卜r-"卜二卜r^vovovr)vn寸寸fiiN—o0-860"6S0-寸寸60-1-860"80「0-zzz,o-t-S60S寸ro-119,0-l-S60Zz,lo,6寸0-I,860XS610,69S0-I-860T.卜lro-stro-llS60Xz,zl,o-I-860Zsro-sooo-II860.3soI-860.Z69s-6§I,S60,zKro,I9e,0〖-86sso-S09.0-860"Aro,z.zz;oI-860Xssro,6960-860Ts寸ro-C80I-860"££ro.寸6rl-86sISO-n-860Ts寸一-S6SS61.0-s二-S60X18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