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銆�銆�1)鑷惛娉垫祦閲忚垏鎻氱▼
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ZXPB涓嶉姽閶奸槻鐖嗚嚜鍚搁洟蹇冩车
銆�銆�2)鑷惛娉佃桓鍔熺巼鑸囨晥鐜�
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銆�銆�4)鑷惛娉垫苯铦曡垏姹借潟浣欓噺
銆�銆�姹借潟鎸囨按娉甸亱琛屼腑锛屽洜鐐烘煇浜涘師鍥犱娇寰楁车鍏�(n猫i)灞�閮ㄥ鍔涢檷浣庡埌姘寸殑姹藉寲澹撳姏鏅傦紝姘存渻鐢�(ch菐n)鐢熸苯鍖栬�屽舰鎴愭埃娑叉祦锛屽埌閬旈珮澹撳崁(q奴)鍚庢埃娉″彈鍒版摖澹撶牬婊呴噸鏂板嚌绲�(ji茅)鎴愭按锛屽湪閫欏�嬮亷绋嬩腑鏈冪敘(ch菐n)鐢熷緢楂樼殑姘撮寴澹撳姏锛屼娇鏉愭枡鏀跺埌渚佃潟鍜岀牬澹�銆傛苯铦曠従(xi脿n)璞′富瑕佹槸閲濆皪钁夌墖娉佃�岃█锛屾槸鍦ㄦ车鐨勯伕鍨嬭ō(sh猫)瑷堜腑蹇呴爤閬垮厤鐨勭従(xi脿n)璞�銆傛苯铦曠殑鐢�(ch菐n)鐢熻垏娉电殑鎬ц兘鏈夐棞(gu膩n)锛屼篃鑸囨车鐨勫惛鍙ｈ缃殑瑷�(sh猫)瑷堟湁闂�(gu膩n)銆�
銆�銆�姹借潟浣欓噺鎸囨车鍏ュ彛铏曟恫楂旀墍鍏锋湁鐨勭附姘撮牠鑸囨恫楂旀苯鍖栨檪鐨勫鍔涢牠涔嬪樊锛屽柈浣嶇敤绫�(姘存煴)妯欐敞锛岀敤NPSH(Net Positive Suction Head)琛ㄧず銆傚湪钁夌墖娉电殑鎬ц兘鍙冩暩(sh霉)涓�锛屽粻J涓�鑸渻鎻愪緵鍏佽ū姹借潟浣欓噺渚涜ō(sh猫)瑷堜汉鍝″湪閬稿瀷瑷�(sh猫)瑷堟檪浣跨敤锛屾苯铦曚綑閲忕殑鍙冩暩(sh霉)瑾槑濡備笅锛�
銆�銆�NPSHc—鑷ㄧ晫姹借潟浣欓噺锛岀敱姹借潟瑭﹂姹傚緱;
銆�銆�[NPSH]—鍏佽ū姹借潟浣欓噺锛屾槸淇濊瓑娉典笉鐧�(f膩)鐢熸苯铦曠殑姹借潟浣欓噺锛岄�氬父鍙朳NPSH]=(1.1~1.5)NPSHc鎴朳NPSH]=NPSHc+K(涓�鑸彇K=0.3)銆�
銆�銆�姹借潟浣欓噺涓昏褰遍熆瀹夎姊濅欢锛屽厑瑷辨苯铦曚綑閲忚秺灏�锛屾剰鍛宠憲鍙壙鎿旂殑娉靛墠璨犲瓒婂ぇ锛屾按娉电殑鎬ц兘瓒婂ソ銆�
銆�銆�涓嬮潰鎴戝�戝啀渚嗘牴鎿�(j霉)瀵﹂殯瀹㈡埗妗堜緥渚嗚垑骞惧�嬩緥瀛愶細
銆�銆�DY銆佹彋绋�
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銆�銆�绗簩銆佹祦閲�
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銆�銆�绗笁銆侀亷娴佺洿寰�
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銆�銆�1銆�.杓搁�佷粙璩�(zh矛)鐨勭墿鐞嗗寲瀛�(xu茅)鎬ц兘锛屽寘鎷細浠嬭唱(zh矛)鐗规��(濡傝厫铦曟��銆佺（铦曟��銆佹瘨鎬х瓑)銆佸浐楂旈绮掑惈閲忓強椤嗙矑澶у皬銆佸瘑搴�銆侀粡搴�銆佹苯鍖栧鍔涚瓑銆�
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銆�銆�3銆�.鐝�(xi脿n)鍫存浠讹細
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銆�銆�鍦ㄤ互涓婇兘纰哄畾鍚�锛屽啀鏍规摎(j霉)娉电殑鎬ц兘鏇茬窔閬告搰鍚堥仼鐨勫瀷铏燂細
銆�銆�a.鏌ョ郴鍒楀瀷璀滃湒锛岄伕鎿囨车鐨勯瀹氬伐浣滈粸钀藉湪娉电殑楂樻晥宸ヤ綔鍗�(q奴)鍏�(n猫i)锛屾牎鏍告车鐨勬苯铦曚綑閲忔槸鍚︾鍚堣姹傘��
銆�銆�b.鏍℃牳娉电殑鏉愯唱(zh矛)銆佸瘑灏佺瓑鏄惁鑳芥豢瓒宠几閫佷粙璩�(zh矛)瑕佹眰銆�
銆�銆�c.鏍℃牳瀹夎妾慨姊濅欢鏄惁婊胯冻鍠珨瑷�(sh猫)瑷堢殑瑕佹眰銆� |
