鏈枃浠ュザ绮夌敓浜т腑鐨勫簲鐢ㄤ负渚嬮槓杩颁簡绮変綋姘斿姏杈撻€佽璁¤繃绋嬪強搴旂敤杩囩▼涓彲鑳藉嚭鐜扮殑闂鍙婃敞鎰忎簨椤广€ 閫氳繃鐞嗚璁＄畻锛 寰楀嚭绮変綋姘斿姏杈撻€佹椂锛 椋庢満鐨勫帇鍔涗笉鑳戒綆浜? 730.34 Pa銆 鍙﹀锛 瑕佸仛濂借繘鍏ラ鏈哄叆鍙 鐨勭┖姘旂殑闄ゆ箍鍔犵儹宸ヤ綔銆侟/span>
濂剁矇鍦ㄨ繛缁寲鐢熶骇涓紝鎴愬搧閫佸叆绮変粨杩涜鏆傚瓨鏄负涓嬮亾宸ュ簭鐨勯『鍒╄繘琛岃€岃缃€ 浠庡柗闆惧共鐕ュ鍑烘潵鐨勭矇閫佽嚦绮変粨涓€鑸噰鐢ㄦ皵鍔涜緭閫佹柟寮忔潵瀹屾垚銆 瀹冨垎涓哄帇閫佸強鍚搁€? 绉嶃€ 杩戝勾鏉ュ湪杈撻€佺矇杩囩▼涓篃鍑虹幇杩囦笉灏戦棶棰橈紝 杩欎簺闂涓昏鏈夛細杈撻€佹椂鐨勬贩鍚堟瘮閫夋嫨涓嶅悎閫傦紱 杈撶矇绠￠亾鐩村緞涓嶅悎閫傦紱 椋庢満鐨勯鍘嬪亸灏忥紱 杩涘叆椋庢満鐨勭┖姘旀病鏈夊仛濂介櫎婀垮鐞嗘垨闄ゆ箍鏁堟灉涓嶄匠锛 浠庤€屽鑷撮€佺矇涓嶇晠锛 绠￠亾瀹规槗鍫靛绛夐棶棰樼殑鍙戠敓銆侟/span>
鏈枃浠ュザ绮夌敓浜т腑鐨勫簲鐢ㄤ负渚嬶紝闃愯堪浜嗛鍔涢€佺矇璁捐涓庡簲鐢ㄨ繃绋嬩腑鍙兘鍑虹幇鐨勯棶棰樺強娉ㄦ剰浜嬮」銆侟br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>
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1 绮変綋姘斿姏杈撻€佺殑璁捐杩囩▼
1.1绮変綋姘斿姏杈撻€佺殑璁捐鍙傛暟
鐗╂枡浠嬭川涓哄ザ绮夛紝 鐢熶骇鑳藉姏857 kg/h锛 鐜娓╁害20 鈩冿紱濂剁矇鐨勫钩鍧囩矑寰?5 渭 m锛 鍫嗙Н瀵嗗害锛 蟻 锛 0.6 t/m 3 锛 娓╁害50 鈩冿紝姣旂儹瀹?.51 4 kJ/kg鈥⑩剝锛 褰撳湴澶ф皵鍘嬫寜1 .01 3X1 0 -6 MPa璁＄畻锛 姘村钩杈撻€佽窛绂讳负35 m锛 鍊炬枩瑙?0 潞 锛 锛 鏃嬭浆鍑烘枡闃€鍑虹矇锛 鏃嬮鍒嗙鍣ㄥ嵏绮夈€ 鏈緥鎸夊惛閫佽繘琛岃璁°€侟br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>
1.2 绯荤粺涓昏鍙傛暟鐨勭‘瀹氬強璁＄畻
閫 瀹 璐 閲忔贩鍚堟瘮 锛 鍗 鍗曚綅鏃堕棿 鍐 杈 閫佺矇 灏 璐 閲忎笌鎵€闇€绌烘皵璐ㄩ噺鐨勬瘮鍊硷紝 m=G/G 1 锛 鏈緥璐ㄩ噺娣峰悎姣斾负4锛屽垯绌烘皵璐ㄩ噺=G 1 =857/4=21 4.2 kg/h锛 绌烘皵浣撶Н娴侀噺锛歁=21 4.2脳 1 .205=258.2 m 3 銆傜矇 灏 涓 绌 姘 鐨 娣 鍚 娓 搴 锛 t 1 锛 鎸 涓 寮 璁 绠 锛歵 1 =锛 mt 2 c+ t 0 c锛 /锛 mc+c锛 锛 寮忎腑 锛 t 0 -鏈€鍒濈殑娣峰悎娓╁害锛 鍙栫┖姘旀俯搴︼紙 鈩冿級 锛 t 1 -娣峰悎娓╁害锛 鈩冿級 锛 t 2 -濂剁矇娓╁害锛 鈩冿級 锛 c-绌烘皵鐨 姣旂儹锛 c=1 .005 kJ/kg鈥 鈩冿紝 t 1 =锛 4X50脳 1 . 005+20脳 1 . 005)/锛 4脳 1 . 005+1 . 005锛堼44锛 鈩冿級 銆侟br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>
娣 鍚 娓 搴 涓 绌 姘 鐨 瀵 搴︼細蟻绌 = 1 . 2 9 3 脳 2 7 3 /锛 2 7 3 + t 1 锛 脳 蟻0 /蟻 1 = 1 . 2 93 脳 2 7 3 /锛 2 7 3 + 44锛 脳锛 1 .01 3脳 1 0 -6 锛 /锛 1 .01 3脳 1 0 -6 锛 =1 .1 1 4 kg/m 3 銆傛牴鎹甦锛 蟻 绌 鍜宼 1 鏌ユ偓娴€熷害鍥剧嚎锛 寰楁偓娴€熷害 [1 ] 锛 u绾︿负0.01 8 m/s锛 涔樹互淇绯绘暟0.6锛 u涓?.01 08 m/s銆侟br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>
绮夊皹鍦ㄧ閬撲腑鐨勯€熷害 锛 u 1 =a +BL 2 锛 寮忎腑锛 u 1 -绠￠亾涓皵娴侀€熷害锛 m/s锛 锛 a-閫熷害淇绯绘暟锛 杩欓噷a=1 6锛 B-绯绘暟锛 杩欓噷B=5脳 1 0 -5 锛 L-绠￠亾姘村钩闀垮害锛 m锛 锛 L=35 m銆傚垯u 1 =a +BL 2 =1 6 +5脳 1 0 -5 脳 35 2 =1 2.45 m/s銆傝緭閫佺閬撶洿寰 [1 ] 锛 D=1 /53.1 锛 寮忎腑锛 D-绠￠亾鐩村緞锛 m锛 锛 G鈥 杈撻€佺矇灏樿川閲忥紙 kg/h锛 锛 杩欓噷G=857 kg/h銆侟br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>鍒橠=1 /53.1 =1 /53.1 =0.074m锛 鍥犳鍙栧寰勪负80 mm锛 澹佸帤涓? mm鐨勪笉閿堥挗绠°€侟br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>
1.3 绯荤粺鍘嬪姏鎹熷け璁＄畻
1 .3.1 缁欐枡瑁呯疆鐨勫帇鍔涙崯澶辫绠桙br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>鏈緥缁欐枡瑁呯疆鎸夋棆杞嚭 鏂欓榾 渚涙枡璁＄畻锛 螖 P= B 1 m锛 蟻 u 2 1 /2锛堻br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>寮忎腑锛 螖 P-缁欐枡瑁呯疆鐨勫帇鍔 鎹熷け锛 Pa锛 锛 B 1 -鐗╂枡鍦ㄨ緭绠￠亾鍐呴€熷害涓庤緭绠￠亾鍐呯┖姘旈€熷害涔嬫瘮鍊肩殑骞虫柟锛 鍗矪 1 =锛 u c /u 1 锛? 銆 uc = u 1 - u=1 2.45-0.01 08=1 2.4392 m/s锛 鍒橞 1 =锛 1 2.4392/1 2.45锛? =0.998銆傚垯螖P=B 1 m锛 蟻 u 2 1 /2锛 =0.998脳 4锛 0.6脳 1 2.45 2 /2锛堼1 85.6 Pa
1 .3.2 绮夊皹鍚姩鐨勫帇鍔涙崯澶包br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>螖 P 1 =锛 1 +B 1 m锛 脳 锛 蟻 u 2 1 /2锛 锛 寮忎腑锛 h-鎻愬崌楂樺害锛 m锛夈€侟br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>鍒櫸 P 1 =锛 1 +B 1 m锛 脳 锛 蟻 u21 /2锛 =锛 1 +0.998脳 4锛壝 0.6脳 1 2.45 2 /2=232.1 3 Pa
1 .3.3 绮夊皹鎻愬崌鐨勫帇鍔涙崯澶包br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>螖 P 2 =9.8u 1 /u c 锛 m蟻 h锛 =9.8脳 锛 1 2.45/1 2.4392锛壝 0.6脳 7=41 .2 Pa锛 鎻愬崌楂樺害h=7 m锛堻/p>
1 .3.4 寮鐨勫帇鍔涙崯澶憋紙 1 锛 鍊炬枩绠￠亾鍘嬪姏鎹熷け锛 鍊炬枩绠￠亾涓庢按骞虫垚60 潞 锛 鍊炬枩闀夸负8.08 m锛 鎸変笅寮忚绠楋細螖 P 3 =茠锛 L/D锛 锛 蟻 u 2 1 /2锛 锛 1 +K 0 m锛 锛 寮忎腑锛 茠-绯绘暟锛 茠=K 0 锛 0.01 25+0.001 1 /D锛 锛孠 0 =1.25 D锛 a/锛 a-1锛 )锛 a=u 1 /u=12.45/0.0108=1 152.7锛孠 0 =1 .25脳 0.074锛 1 1 52.7/锛 1 1 52.7-1 锛 锛 =1 .251 锛屍扆1 .251 锛 0.01 25+0.001 1 /0.074锛 =0.034銆傚垯螖 P 3 =0.034锛 8.08/0.074锛 锛 0.6脳 1 2.452 /2锛夛紙 1 +1 .251 脳 4锛 =1 036.5 Pa锛 2锛 寮鐨勫帇鍔涙崯澶辨寜涓嬪紡璁＄畻锛 螖P 4 =尉 锛 1 +Km锛壝 锛 蟻 u 2 1 /2锛 锛 寮忎腑锛 尉 -绯绘暟锛 杩欓噷尉 =0.062锛 K-绯绘暟锛岃繖閲孠=1 .6銆傚垯 螖 P 4 = 尉 锛 1 + Km 锛 脳 锛 蟻 u21 /2 锛 = 0 . 0 6 2 X锛 1 +1 .6脳 4锛 X0.6脳 1 2.45 2 /2=21 .33 Pa
杩 閲 鎸 2 涓 寮 澶 璁 绠 锛 鍏 鎬 鍘 鍔 鎹 澶 涓?螖P 4 =2脳 21 .33=42.66 Pa
1 .3.5 姘村钩杈撻€佺閬撶殑鍘嬪姏鎹熷け
姘村钩杈撻€佺閬撶殑鍘嬪姏鎹熷け鎸変笅寮忚绠楋細 螖P 5 =茠锛 L/D锛夛紙 蟻 u 2 1 /2锛 锛 1 +K 0 m锛 锛 寮忎腑锛 茠-绯绘暟锛 杩欓噷茠=0.062锛汯 1 -绯绘暟锛 杩欓噷K 1 =0.269銆傚垯螖 P 5 =0.034锛 34.75/0.074锛 锛 0.6脳 1 2.452 /2锛夛紙 1 +1 .251 脳 4)=4 457.6 Pa
1 .3.6 鐗╂枡缁忚繃鏃嬮鍒嗙鍣ㄦ椂鐨勫帇鍔涙崯澶包br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>螖 P 6 =0.1 02尉1 锛 rv2 /2g锛 [1 锝 3] 锛 寮忎腑锛 r-绌烘皵瀵嗗害锛? .1 87 kg/m 3 锛 v-杩涘叆鏃嬮鍒嗙鍣ㄧ殑绌烘皵閫熷害锛 杩欓噷鎸?0 m/s璁＄畻锛 尉 1 -闃诲姏绯绘暟锛 杩欓噷尉 1 =5銆傚垯 螖 P 6 = 0 . 1 0 2 尉1 锛 r v2 / 2 g 锛 = 0 . 1 0 2 脳 5 脳锛 1 .1 87脳 20 2 /2脳 9.81 锛 =1 2.34=1 23.4 Pa
1 .3.7 鎬荤殑鍘嬪姏鎹熷け
螖P 鎬 =位 (螖P+螖P 1 +螖P 2 +螖P 3 +螖P 4 +螖P 5 +螖P 6 锛 锛屽紡涓細 位 -瀹夊叏绯绘暟锛 杩欓噷位 =1 .1 銆傚垯螖P 鎬 =1 .1 锛 1 85.6+41 .2+232.1 3+1 036.5+42.66+4457.6+1 23.4锛 =6 730.34 Pa鐢 璁 绠 缁 鏋 鍙 鐭 閫 鎷 椋 鏈 鏃 锛 鍏 椋 鍘 涓 寰 浣 浜? 730.34 Pa銆侟/p>
2姘斿姏杈撻€佺殑闄ゆ箍闂
鎴戝浗鍗楀寳鏂圭殑绌烘皵鐩稿婀垮害鐩稿樊杈冨ぇ銆 鍚屼竴鍦板尯闅忕潃瀛ｈ妭鐨勫彉鍖栧叾绌烘皵鐩稿婀垮害鍊间篃鏈夊緢澶у樊寮傘€ 鍦ㄦ垜鍥戒笢鍖椼€佸崕鍖椼€ 瑗垮寳绛夊湴鍖猴紝 鍙楃┖姘旂浉瀵规箍搴︾殑褰卞搷涓嶅ぇ锛 鎴栬鏈夊埄浜庡柗闆惧共鐕ョ敓浜э紝 鑰屽湪鎴戝浗鍗楁柟灏ゅ叾鏄部娴峰湴鍖哄奖鍝嶅嵈姣旇緝澶с€ 涓昏鍘熷洜鏄┖姘斾腑姘村垎鍚噺楂橈紝 鍗崇┖姘旂浉瀵规箍搴﹀ぇ锛 鍦ㄨ繖浜涘湴鍖猴紝 鍦ㄧ┖姘旂浉瀵规箍搴︽渶澶х殑瀛ｈ妭閲岀敓浜ф椂 [4锝 6] 锛 濂剁矇姘村垎鍚噺瀹规槗瓒呮爣锛 绮変綋姘斿姏杈撻€佽繃绋嬩腑锛 杩涘叆绠￠亾鐨勭┖姘斿鏋滀笉杩涜闄ゆ箍澶勭悊鍦ㄧ澹佷笂瀹规槗浜х敓鍑濈粨姘达紝 瀵艰嚧绠￠亾鍫靛棰戝彂鑰屽奖鍝嶆甯哥敓浜с€ 鍥犳锛 杩涘叆椋庢満鍏ュ彛 鐨勭┖姘斿繀椤荤粡杩囬櫎婀垮姞鐑鐞嗗悗鎵嶅彲杩涘叆椋庢満銆 鍦ㄩ€夋嫨闄ゆ箍鏈烘椂搴旀妸褰撳湴涓€骞村洓瀛ｆ渶澶х浉瀵规箍搴﹀弬鏁般€ 椋庢満鐨勯閲忋€ 椋庢満鎵€澶勭殑宸ヤ綔鐜鍙傛暟闄ゆ箍鍚庣┖姘旀墍瑕佽揪鍒扮殑鐞嗚鐩稿婀垮害鍊煎強闄ゆ箍鍚庣┖姘旂殑娓╁害鎻愪緵缁欓櫎婀挎満鐨勭敓浜у巶瀹讹紝 浣滀负闄ゆ箍鏈洪€夋嫨璁捐鐨勪緷鎹€侟/p>
3 缁撴潫璇?br style="margin: 0px; padding: 0px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"/>绮変綋姘斿姏杈撻€佺殑浼樼偣鏄矇灏樹笉瀹规槗鍙楁薄鏌撲笖鑺傜渷浜哄姏 鐗╁姏锛 鍙疄鐜拌繛缁寲鑷 鍔ㄥ寲鐢熶骇銆 涓嶄絾鍦ㄥザ绮夊伐涓氱敓浜т腑鏈夊簲鐢紝 鍦ㄥ叾瀹冮鍝佸強鍙戦叺琛屼笟涓婁篃閮芥湁搴旂敤銆 鏂囦腑涓昏閽堝杩戜簺骞存潵鍦ㄥザ绮夊伐涓氱敓浜т腑鍑虹幇鐨勪竴浜涗富瑕侀棶棰樿繘琛屼簡 鐞嗚璁＄畻锛 杩欎簺涔熸槸鍦ㄥ簲鐢ㄨ繃绋嬩腑鏈€瀹规槗鍑虹幇鐨勯棶棰樸€ 姝ゅ锛 绮変綋姘斿姏杈撻€佺殑浣跨敤缁存姢涔熷緢閲嶈锛 濡傝淇濇寔绠￠亾绯荤粺瀵嗛棴涓嶅緱婕忔皵锛 瑕佸畾鏈熸竻娲楃矇浣撴皵鍔涜緭閫佺殑绠￠亾锛 闂存瓏鐢熶骇鏃惰妫€鏌ョ閬撳唴鏄惁娈嬬暀绮夊皹锛 鏈夋粸鐣欑殑绮夊皹濡傛灉涓嶅強鏃舵竻鐞嗗交搴曞啀鐢熶骇鏃舵瀬鏈夊彲鑳藉紩璧烽閫佸彈闃汇€侟/p>
