閫氶亷(gu貌)闆㈠績娉佃垏绠¤矾绯荤当(t菕ng)鐨勭壒鎬ф洸绶�(xi脿n)鍦栧垎鏋愪簡闆㈠績娉垫祦閲忚(di脿o)绡�(ji茅)鐨勫咕绋富瑕佹柟寮忥細鍑哄彛闁ラ杸(m茅n)瑾�(di脿o)绡�(ji茅)銆佹车璁婇�熻(di脿o)绡�(ji茅)鍜屾车鐨勪覆銆佸苟鑱�(li谩n)瑾�(di脿o)绡�(ji茅)銆傜敤鐗规�ф洸绶�(xi脿n)鍦栧垎鏋愪簡鍑哄彛闁ラ杸(m茅n)瑾�(di脿o)绡�(ji茅)鍜屾车璁婇�熻(di脿o)绡�(ji茅)鍏╃ó鏂瑰紡鐨勮兘鑰楁悕澶�锛屽苟閫�(j矛n)琛屼簡灏�(du矛)姣�锛屾寚鍑洪洟蹇冩车鐢ㄨ畩閫熻(di脿o)绡�(ji茅)娴侀噺姣旂敤鍑哄彛闁ラ杸(m茅n)瑾�(di脿o)绡�(ji茅)娴侀噺鍙互鏇村ソ鐨勭瘈(ji茅)绱勮兘鑰�锛屼笖绡�(ji茅)鑳芥晥鐜囪垏娴侀噺璁婂寲澶у皬鏈夐棞(gu膩n)銆傚湪瀵�(sh铆)闅涙噳(y墨ng)鐢ㄦ檪(sh铆)鎳�(y墨ng)瑭叉敞鎰忚畩閫熻(di脿o)绡�(ji茅)鐨勮寖鍦�锛屾墠鑳芥洿濂界殑鎳�(y墨ng)鐢ㄩ洟蹇冩车璁婇�熻(di脿o)绡�(ji茅)銆�
銆�銆�闆㈠績娉垫槸寤ｆ硾鎳�(y墨ng)鐢ㄤ簬鍖栧伐宸ユキ(y猫)绯荤当(t菕ng)鐨勪竴绋�氱敤娴侀珨姗�(j墨)姊�銆傚畠鍏锋湁鎬ц兘閬╂噳(y墨ng)鑼冨湇寤�(鍖呮嫭娴侀噺銆佸闋強灏�(du矛)杓搁�佷粙璩�(zh矛)鎬ц唱(zh矛)鐨勯仼鎳�(y墨ng)鎬�)銆侀珨绌嶅皬銆佺祼(ji茅)妲�(g貌u)绨�(ji菐n)鍠�銆佹搷浣滃鏄撱�佹搷浣滆不(f猫i)鐢ㄤ綆绛夎澶氬劒(y艒u)榛�(di菐n)銆傞�氬父锛屾墍閬搁洟蹇冩车鐨勬祦閲�銆佸闋彲鑳芥渻(hu矛)鍜岀璺腑瑕佹眰鐨勪笉涓�鑷�锛屾垨鐢变簬鐢熺敘(ch菐n)浠诲嫏(w霉)銆佸伐钘濊姹傜櫦(f膩)鐢熻畩鍖�锛屾鏅�(sh铆)閮借姹傚皪(du矛)娉甸��(j矛n)琛屾祦閲忚(di脿o)绡�(ji茅)锛屽(sh铆)璩�(zh矛)鏄敼璁婇洟蹇冩车鐨勫伐浣滈粸(di菐n)銆傞洟蹇冩车鐨勫伐浣滈粸(di菐n)鏄敱娉电殑鐗规�ф洸绶�(xi脿n)鍜岀璺郴绲�(t菕ng)鐗规�ф洸绶�(xi脿n)鍏卞悓姹哄畾鐨勶紝鍥犳锛屾敼璁�?n猫i)榄忔垜绮嬧偓(g猫)鐨勭壒鎬ф洸绶�(xi脿n)閮藉彲浠ラ仈(d谩)鍒版祦閲忚(di脿o)绡�(ji茅)鐨勭洰鐨勩�傜洰鍓�锛岄洟蹇冩车鐨勬祦閲忚(di脿o)绡�(ji茅)鏂瑰紡涓昏鏈夎(di脿o)绡�(ji茅)闁ユ帶鍒�銆佽畩閫熸帶鍒朵互鍙婃车鐨勫苟銆佷覆鑱�(li谩n)瑾�(di脿o)绡�(ji茅)绛�銆傜敱浜庡悇绋(di脿o)绡�(ji茅)鏂瑰紡鐨勫師鐞嗕笉鍚�锛岄櫎鏈夎嚜宸辩殑鍎�(y艒u)缂洪粸(di菐n)澶�锛岄�犳垚鐨勮兘閲忔悕鑰椾篃涓嶄竴妯�锛岀偤浜嗗皨姹傛渶浣�銆佽兘鑰楁渶灏�銆佹渶绡�(ji茅)鑳界殑娴侀噺瑾�(di脿o)绡�(ji茅)鏂瑰紡锛屽繀闋堝叏闈㈠湴浜嗚В闆㈠績娉电殑娴侀噺瑾�(di脿o)绡�(ji茅)鏂瑰紡鑸囪兘鑰椾箣闁撶殑闂�(gu膩n)绯�銆�
銆�銆�1 娉垫祦閲忚(di脿o)绡�(ji茅)鐨勪富瑕佹柟寮�
銆�銆�1.1 鏀硅畩绠¤矾鐗规�ф洸绶�(xi脿n)
銆�銆�鏀硅畩闆㈠績娉垫祦閲忔渶绨�(ji菐n)鍠殑鏂规硶灏辨槸鍒╃敤娉靛嚭鍙ｉ枼闁�(m茅n)鐨勯枊(k膩i)搴︿締(l谩i)鎺у埗锛屽叾瀵�(sh铆)璩�(zh矛)鏄敼璁婄璺壒鎬ф洸绶�(xi脿n)鐨勪綅缃締(l谩i)鏀硅畩娉电殑宸ヤ綔榛�(di菐n)銆�
銆�銆�1.2 鏀硅畩闆㈠績娉电壒鎬ф洸绶�(xi脿n)
銆�銆�鏍规摎(j霉)姣斾緥瀹氬緥鍜屽垏鍓插畾寰�锛屾敼璁婃车鐨勮綁(zhu菐n)閫�銆佹敼璁婃车绲�(ji茅)妲�(g貌u)(濡傚垏鍓婅憠杓寰戞硶绛�)鍏╃ó鏂规硶閮借兘鏀硅畩闆㈠績娉电殑鐗规�ф洸绶�(xi脿n)锛屽緸鑰岄仈(d谩)鍒拌(di脿o)绡�(ji茅)娴侀噺(鍚屾檪(sh铆)鏀硅畩澹撻牠)鐨勭洰鐨�銆備絾鏄皪(du矛)浜庡凡缍�(j墨ng)宸ヤ綔鐨勬车锛屾敼璁婃车绲�(ji茅)妲�(g貌u)鐨勬柟娉曚笉澶柟渚�锛屽苟涓旂敱浜庢敼璁婁簡娉电殑绲�(ji茅)妲�(g貌u)锛岄檷浣庝簡娉电殑閫氱敤鎬�锛岀洝绠″畠鍦ㄦ煇浜涙檪(sh铆)鍊欒(di脿o)绡�(ji茅)娴侀噺缍�(j墨ng)婵�(j矛)鏂逛究[1]锛屽湪鐢熺敘(ch菐n)涓篃寰堝皯閲囩敤銆傞�欓噷鍍呭垎鏋愭敼璁婇洟蹇冩车鐨勮綁(zhu菐n)閫熻(di脿o)绡�(ji茅)娴侀噺鐨勬柟娉�銆傚緸鍦�1涓垎鏋愶紝鐣�(d膩ng)鏀硅畩娉佃綁(zhu菐n)閫熻(di脿o)绡�(ji茅)娴侀噺寰濹1涓嬮檷鍒癚2鏅�(sh铆)锛屾车鐨勮綁(zhu菐n)閫�(鎴栭浕姗�(j墨)杞�(zhu菐n)閫�)寰瀗1涓嬮檷鍒皀2锛岃綁(zhu菐n)閫熺偤n2涓嬫车鐨勭壒鎬ф洸绶�(xi脿n)Q-H鑸囩璺壒鎬ф洸绶�(xi脿n)He=H0+G1Qe2(绠¤矾鐗规洸绶�(xi脿n)涓嶈畩鍖�)浜や簬榛�(di菐n)A3(Q2锛孒3)锛岄粸(di菐n)A3鐐洪�氶亷(gu貌)瑾�(di脿o)閫熻(di脿o)绡�(ji茅)娴侀噺鍚庢柊鐨勫伐浣滈粸(di菐n)銆傛瑾�(di脿o)绡�(ji茅)鏂规硶瑾�(di脿o)绡�(ji茅)鏁堟灉鏄庨’銆佸揩鎹�銆佸畨鍏ㄥ彲闈�锛屽彲浠ュ欢闀�(zh菐ng)娉典娇鐢ㄥ＝鍛斤紝绡�(ji茅)绱勯浕鑳�锛屽彟澶栭檷浣庤綁(zhu菐n)閫熼亱(y霉n)琛岄倓鑳芥湁鏁堢殑闄嶄綆闆㈠績娉电殑姹借潟浣欓噺NPSHr锛屼娇娉甸仩(yu菐n)闆㈡苯铦曞崁(q奴)锛屾笡灏忛洟蹇冩车鐧�(f膩)鐢熸苯铦曠殑鍙兘鎬2]銆傜己榛�(di菐n)鏄敼璁婃车鐨勮綁(zhu菐n)閫熼渶瑕佹湁閫氶亷(gu貌)璁婇牷鎶�琛�(sh霉)渚�(l谩i)鏀硅畩?c猫)鐡�?d貌ng)姗�(j墨)(閫氬父鏄浕鍕�(d貌ng)姗�(j墨))鐨勮綁(zhu菐n)閫�锛屽師鐞嗗京(f霉)闆�锛屾姇璩囪純澶э紝涓旀祦閲忚(di脿o)绡�(ji茅)鑼冨湇灏�銆�
銆�銆�1.3 娉电殑涓�銆佸苟閫ｈ(di脿o)绡�(ji茅)鏂瑰紡
銆�銆�鐣�(d膩ng)鍠嚭(t谩i)闆㈠績娉典笉鑳芥豢(m菐n)瓒宠几閫佷换鍕�(w霉)鏅�(sh铆)锛屽彲浠ラ噰鐢ㄩ洟蹇冩车鐨勫苟鑱�(li谩n)鎴栦覆鑱�(li谩n)鎿嶄綔銆傜敤鍏╄嚭(t谩i)鐩稿悓鍨嬭櫉(h脿o)鐨勯洟蹇冩车骞惰伅(li谩n)锛岄洊鐒跺闋畩鍖栦笉澶�锛屼絾鍔犲ぇ浜嗙附鐨勮几閫佹祦閲忥紝骞惰伅(li谩n)娉电殑绺芥晥鐜囪垏鍠嚭(t谩i)娉电殑鏁堢巼鐩稿悓;闆㈠績娉典覆鑱�(li谩n)鏅�(sh铆)绺界殑澹撻牠澧炲ぇ锛屾祦閲忚畩鍖栦笉澶�锛屼覆鑱�(li谩n)娉电殑绺芥晥鐜囪垏鍠嚭(t谩i)娉垫晥鐜囩浉鍚屻��
銆�銆�2 涓嶅悓瑾�(di脿o)绡�(ji茅)鏂瑰紡涓嬫车鐨勮兘鑰楀垎鏋�
銆�銆�鍦ㄥ皪(du矛)涓嶅悓瑾�(di脿o)绡�(ji茅)鏂瑰紡涓嬬殑鑳借�楀垎鏋愭檪(sh铆)锛屾枃绔犲儏閲濆皪(du矛)鐩墠寤ｆ硾閲囩敤鐨勯枼闁�(m茅n)瑾�(di脿o)绡�(ji茅)鍜屾车璁婅綁(zhu菐n)閫熻(di脿o)绡�(ji茅)鍏╃ó瑾�(di脿o)绡�(ji茅)鏂瑰紡鍔犱互鍒嗘瀽銆傜敱浜庨洟蹇冩车鐨勫苟銆佷覆鑱�(li谩n)鎿嶄綔鐩殑鍦ㄤ簬鎻愰珮澹撻牠鎴栨祦閲�锛屽湪鍖栧伐闋�(l菒ng)鍩熼亱(y霉n)鐢ㄤ笉澶�锛屽叾鑳借�楀彲浠ョ祼(ji茅)鍚堝湒2閫�(j矛n)琛屽垎鏋�锛屾柟娉曞熀鏈浉鍚屻��
銆�銆�2.1 闁ラ杸(m茅n)瑾�(di脿o)绡�(ji茅)娴侀噺鏅�(sh铆)鐨勫姛鑰�
銆�銆�闆㈠績娉甸亱(y霉n)琛屾檪(sh铆)锛岄浕鍕�(d貌ng)姗�(j墨)杓稿叆娉佃桓鐨勫姛鐜嘚鐐猴細
銆�銆�N=vQH/η
銆�銆�寮忎腑N——杌稿姛鐜�锛寃;
銆�銆�Q——娉电殑鏈夋晥澹撻牠锛宮;
銆�銆�H——娉电殑瀵�(sh铆)闅涙祦閲忥紝m3/s;
銆�銆�v——娴侀珨姣旈噸锛孨/m3;
銆�銆�η——娉电殑鏁堢巼銆�
銆�銆�鐣�(d膩ng)鐢ㄩ枼闁�(m茅n)瑾�(di脿o)绡�(ji茅)娴侀噺寰濹1鍒癚2锛屽湪宸ヤ綔榛�(di菐n)A2娑堣�楃殑杌稿姛鐜囩偤锛�
銆�銆�NA2=vQ2H2/η
銆�銆�vQ2H3——瀵�(sh铆)闅涙湁鐢ㄥ姛鐜�锛學;
銆�銆�vQ2(H2-H3)——闁ラ杸(m茅n)涓婃悕鑰楀緱鍔熺巼锛學;
銆�銆�vQ2H2(1/η-1)——闆㈠績娉垫悕澶辩殑鍔熺巼锛學銆�
銆�銆�2.2 璁婇�熻(di脿o)绡�(ji茅)娴侀噺鏅�(sh铆)鐨勫姛鑰�
銆�銆�鍦ㄩ��(j矛n)琛岃畩閫熷垎鏋愭檪(sh铆)鍥犺鐢ㄥ埌闆㈠績娉电殑姣斾緥瀹氬緥锛屾牴鎿�(j霉)鍏舵噳(y墨ng)鐢ㄦ浠�锛屼互涓嬪垎鏋愬潎鎸囬洟蹇冩车鐨勮畩閫熻寖鍦嶅湪±20%鍏�(n猫i)锛屼笖闆㈠績娉垫湰韬晥鐜囩殑璁婂寲涓嶅ぇ[3]銆傜敤闆诲嫊(d貌ng)姗�(j墨)璁婇�熻(di脿o)绡�(ji茅)娴侀噺鍒版祦閲廞2鏅�(sh铆)锛屽湪宸ヤ綔榛�(di菐n)A3娉垫秷鑰楃殑杌稿姛鐜囩偤锛�
銆�銆�NA3=vQ2H3/η
銆�銆�鍚屾ǎ缍�(j墨ng)璁婃彌鍙緱锛�
銆�銆�NA3=vQ2H3+vQ2H3(1/η-1) (2)
銆�銆�寮忎腑 vQ2H3——瀵�(sh铆)闅涙湁鐢ㄥ姛鐜�锛學;
銆�銆�vQ2H3(1/η-1)——闆㈠績娉垫悕澶辩殑鍔熺巼锛學銆�
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