鍦ㄤ竴鑷�(t谩i)娉电殑鍚稿叆鍋�(c猫)鐨勫鍔涗綆锛屽彲鑳芥渻(hu矛)閬囧埌娴侀珨娌搁ò锛屽彲鑳芥渻(hu矛)灏�(d菐o)鑷�
娌搁ò闁�(k膩i)濮嬫檪(sh铆)锛屽湪娑查珨涓殑澹撳姏闄嶄綆鐨勬祦楂旂殑瀵�(sh铆)闅涙韩搴︿笅鐨勮捀姘ｅ銆�
鐐轰簡琛ㄥ緛娼涘湪鐨勬哺榛�(di菐n)鍙婃埃铦�锛屽湪娉电殑鍚稿叆鍋�(c猫)涓婄殑绺藉闋� - 闈犺繎钁夎吉锛屽拰娑查珨鐨勫(sh铆)闅涙韩搴︿笅鐨勮捀姘ｅ涔嬮枔鐨勫樊鍒�锛岄兘鍙互浣跨敤銆�
鍚搁牠
鍦ㄩ潬杩戣憠杓殑娴侀珨鐨勮兘閲忔柟绋� - 鎶藉惛闋殑鍩虹(ch菙)涓婄殑闈滄厠(t脿i)鍜岄�熷害闋殑绺藉拰鍙〃绀虹偤锛�
H S = P S /γ+ V S 2/2鍏嬶紙1锛�
H S =鍚搁牠闈犺繎钁夎吉
P S =鍦ㄦ祦楂斾腑璺濋洟鎵�杩拌憠杓殑闈滃
γ =娴侀珨鐨勬瘮閲�
V S =娴侀珨閫熷害
G = 閲嶅姏鍔犻�熷害
娑查珨钂告埃闋�
瀵�(sh铆)闅涙韩搴︿笅鐨勬恫楂旂殑钂告埃鍙互琛ㄧず鐐猴細
H V = 楂旂⿳/γ锛�2锛�
H V =钂告苯闋�
P V =钂告苯澹撳姏
娉ㄦ剰浜嗗湪娴侀珨涓殑钂告苯澹撳姏鍙栨焙浜庢韩搴�锛� 姘� 锛屾垜鍊戞渶甯歌(ji脿n)鐨勬祦楂�锛屽湪20鈩冮枊(k膩i)濮嬫哺楱�锛屽鏋滃湪娴侀珨涓殑绲曞皪(du矛)澹撳姏鐐�2.3鍗冪墰闋�/绫�2銆� 47.5鍗冪墰闋�/绫�2鐨勭禃灏�(du矛)澹撳姏涓�锛屽湪80鈩冪殑姘撮枊(k膩i)濮嬫哺楱般�� 鍦ㄧ禃灏�(du矛)澹撳姏鐐�101.3鍗冪墰/绫�2锛堝父澹擄級锛屾哺榛�(di菐n)鍦�100鈩冮枊(k膩i)濮�銆�
鍑堟鍚稿叆澹撻牠 - 姹借潟浣欓噺
鍑堟鍚搁牠 - 姹借潟浣欓噺 - 鍙〃绀虹偤鍚搁牠鍜屾恫楂旇捀姘ｉ牠涔嬮枔鐨勫樊鐣�锛屽苟琛ㄧず鍍�
姹借潟浣欓噺= H S - H V锛�3锛�
鎴栵紝閫氶亷(gu貌)绲勫悎锛�1锛夊拰锛�2锛�
姹借潟浣欓噺= P S /γ+ V S 2/2 G - P V /γ锛�3B锛�
鍙敤鐨勬苯铦曚綑閲�-姹借潟浣欓噺涓�鍊�(g猫)鎴朜PSHA
鍑堟鍚搁牠娉靛惛绯荤当(t菕ng)閫氬父琚ū(ch膿ng)鐐烘苯铦曚綑閲忎竴鍊�(g猫) 銆� 姹借潟浣欓噺鍙互鍦ㄨō(sh猫)瑷�(j矛)鍜屽缓瑷�(sh猫)閬�(gu貌)绋嬩腑纰哄畾锛屽緸瀵�(sh铆)闅涚殑鐗╃悊绯荤当(t菕ng)鎴�?q奴)宥�?y脿n)纰哄畾銆�
鍙互瑷�(j矛)绠楀嚭涓�鍊�(g猫)鍙敤鐨勬苯铦曚綑閲忚兘閲忔柟绋� 銆� 鐐轰簡涓�鍊�(g猫)鍏卞悓鐨勬噳(y墨ng)鐢ㄧ▼搴� - 姘存车鐨勬彋(y谩ng)绋嬫祦楂斿緸涓婇潰涓�灞ょ殑鍏朵粬鐨勯枊(k膩i)鏀惧紡姘寸锛岄牠缃愮殑琛ㄩ潰鐨勮兘閲忔垨鍦ㄦ车钁夎吉鐨勮兘閲忔垨闋墠鐨勭浉鍚�锛屽苟鍙互琛ㄧず鐐猴細
H 0 = H + H L锛�4锛�
灏忔檪(sh铆)0 = 闋〃闈�
H S = 闋憠杓墠
H L = 闋緸琛ㄩ潰娴佸け鐨勮憠杓�-鍚稿叆绠＄殑涓昏鍜屾瑕佺殑鎼嶅け
鍦ㄤ竴鍊�(g猫)闁�(k膩i)鏀剧殑妲介牠琛ㄩ潰鍙互琛ㄧず鐐猴細
灏忔檪(sh铆)0 = 0 /γ= P atm涔�/γ锛�4B锛�
灏�(du矛)浜庝竴灏侀枆鍔犲缃愮殑绲曞皪(du矛)闈滄厠(t脿i)缃愬収(n猫i)澹撳姏蹇呴爤琚娇鐢�銆�
钁夎吉鍓嶉牠閮ㄥ彲浠ヨ〃绀虹偤锛�
H S = P S /γ+ V S 2 /2鍏�銆�+ H E锛�4C锛�
H E =娴锋嫈寰炶〃闈㈡车-姝ｆ车缃愪互涓�锛岃矤(f霉)锛屽鏋滄车浣庝簬娌圭
杞�(zhu菐n)鍖栵紙4锛夛紙鍦�4b锛夊拰锛�4c锛変腑锛�
/ P atm涔�γ= P S /γ+ V S 2/2鍏�+ H E + H L锛�4d鐨勶級
钁夎吉鍓嶉牠閮ㄥ彲浠ヨ〃绀虹偤锛�
P S /γ+ V S 2 /2鍏�銆�= P ATM /γ - H E - H L锛�4E锛�
鎴栦綔鐐哄彲鐢ㄧ殑姹借潟浣欓噺锛�
姹借潟浣欓噺涓�鍊�(g猫) = ATM /γ - HÉ - H L - P V /γ锛�4F锛�
鍙敤鐨勬苯铦曚綑閲�-娉典笂闈㈢殑鍧﹀厠
濡傛灉娉垫补绠变笂鏂癸紝娴锋嫈- H E -鏄⿳妤电殑锛� 涓�鍊�(g猫)姹借潟浣欓噺闄嶄綆娴锋嫈娉靛鍔犮��
鍦ㄤ竴瀹氱▼搴︿笂鐨勫噲鍚稿叆澹撳樊锛圢PSH锛夊皣琚笡灏戝埌闆�锛屾恫楂旈枊(k膩i)濮嬭捀鐧�(f膩)銆�
鍙敤姹借潟浣欓噺-娉靛湪娌圭涓嬫柟
濡傛灉娉电殑浣嶇疆鍦ㄦ补绠变笅鏂癸紝娴锋嫈- H E -鏄矤(f霉)鐨�锛� 涓�鍊�(g猫)姹借潟浣欓噺澧炲姞锛岀暥(d膩ng)娉电殑璺屽箙锛堟捣鎷旈檷浣庢车锛�銆�
瀹冪附鏄兘澶犲鍔犱竴鍊�(g猫)閫氶亷(gu貌)闄嶄綆娉碉紙鐢变簬绠￠亾鐐轰竴鍊�(g猫)杓冮暦(zh菐ng)鐨勪富瑕佸拰娆¤鐨勬按闋悕澶� 锛屽彧瑕佷笉澧炲姞锛夌殑姹借潟浣欓噺銆� 閫欐槸閲嶈鐨勶紝浠ラ檷浣庢车娉甸�佹祦楂旀帴杩戣捀鐧�(f膩)婧害鏅�(sh铆)锛屽畠鏄父瑕�(ji脿n)鐨�銆�
蹇呴渶姹借潟浣欓噺-姹借潟浣欓噺r鎴� NPSHR
姹借潟浣欓噺?鐨� 锛岀ū(ch膿ng)鐐烘车鎵�瑕佹眰鐨勫噲鍚搁牠锛屼互闃叉姘ｈ潟娉甸亱(y霉n)琛屽畨鍏ㄥ彲闈�銆�
鎵�闇�NPSH r鐐轰竴鍊�(g猫)鐗瑰畾鐨勬车鏄湪鏅�氭车鐨勫埗閫犲晢 锛屾车鐨勬枃妾旂殑涓�閮ㄥ垎锛岀敱瀵�(sh铆)椹�(y脿n)纰哄畾銆�
涓�鍊�(g猫)绯荤当(t菕ng)鍙敤鐨勬苯铦曚綑閲忔噳(y墨ng)濮嬬祩瓒呭嚭鎵�闇�NPSH?鐨勬车钁夎吉鐨勭溂鐫涳紝浠ラ伩鍏嶈捀鐧�(f膩)鍜屾苯铦�銆� 鍙敤鐨勬苯铦曚綑閲忎竴鍊�(g猫)涓�鑸噳(y墨ng)椤憲楂樹簬鎵�闇�NPSH?锛岄伩鍏嶅惛鍏ョ鍜屾车娈硷紝姘撮牠鎼嶅け锛屽眬閮ㄩ�熷害鍔犻�熷害鍜屽鍔涙笡灏忥紝闁�(k膩i)濮嬫哺楱扮殑娴侀珨鍦ㄨ憠杓〃闈�銆�
闇�瑕佹敞鎰忕殑鏄墍闇�NPSH?鐨勫鍔犲閲忕殑鏂�銆�
闆欏惛钁夎吉娉靛叿鏈夎純浣庢苯铦曚綑閲�?鐨勬瘮鍠惛钁夎吉娉�銆� 闆欏惛钁夎吉鐨勬车鑸囨恫澹撳钩琛★紝浣嗚瑾�(r猫n)鐐烘槸鏄撳彈鍏╁伌(c猫)涓嶅潎鍕绘祦鐢ㄤ笉姝ｇ暥(d膩ng)绠″伐浣�銆�
鑸変緥 - 寰為枊(k膩i)鏀惧紡姘寸鎶芥按
鍦ㄧ綈涓婃柟鐨勬车澧炲姞浠拌鏅�(sh铆)锛屾祦楂斿皣闁�(k膩i)濮嬭捀鐧�(f膩)锛屽湪鏈�楂樻按骞崇殑瀵�(sh铆)闅涙韩搴�銆�
涓婇潰鐨勬渶楂樻捣鎷旂殑NPSH a鏄�0銆� 鍥犳锛屽彲浠ユ渶楂樻捣鎷旓紙绫筹級琛ㄧず锛�
姹借潟浣欓噺涓�鍊�(g猫) = ATM /γ - H E - H L - P V /γ= 0
鐐轰簡鐛插緱鏈�浣崇殑鐞嗚珫姊濅欢涓�锛屾垜鍊戝拷鐣ヤ簡涓昏鐨勫拰娆¤鐨勬按闋悕澶�銆� 鎶珮闋彲浠ヨ琛ㄧず鐐猴細
H E = ATM /γ - P V /γ锛�5锛�
闁�(k膩i)鏀惧紡姘寸鏈�楂樻捣鎷旀垨鎶藉惛闋彇姹轰簬澶ф埃澹� -閫欏湪涓�鑸彲瑕栫偤甯告暩(sh霉)锛屾祦楂�-涓�鑸毃婧害鑰岃畩鍖�锛屽挨鍏舵槸灏�(du矛)姘寸殑钂告埃澹撱��
绲曞皪(du矛)钂告埃澹撴按婧害 20鈩� 鏄�2.3鍗冪墰闋�/绫�2銆� 鍥犳锛岀悊璜栦笂鐨勬渶澶ф捣鎷旈珮搴︽槸锛�
H E =锛�101.33鍗冪墰/绫�2锛�/锛�9.80鍗冪墰/绫�3锛� - 锛�2.3鍗冪墰/绫�2锛�/锛�9.80鍗冪墰/绫�3锛�
=10.1绫�
鐢变簬澹撻牠鎼嶅け鍦ㄥ惛鍏ョ鍜屾车鍏�(n猫i)鐨勭暥(d膩ng)?sh霉)璨浠� - 鐞嗚珫鐨勬渶楂樻捣鎷旂殑椤憲涓嬮檷銆�
寰炰笅琛ㄤ腑鍙互鐧�(f膩)鐝�(xi脿n)鍦ㄤ笉鍚屾韩搴︿笅鐨勪竴鍊�(g猫)闁�(k膩i)鏀剧殑姘存Ы涓婇潰鐨勬车鐨勬渶澶х悊璜栨捣鎷�銆�
鍚搁牠鍙楁韩搴﹀奖闊�
|
婧害 |
钂告埃澹� |
鏈�澶�銆� 娴锋嫈 |
|
锛圤 C锛� |
锛圤 F锛� |
锛堝崈鐗涢爴/绫�2锛� |
锛圡锛� |
锛團T锛� |
|
0 |
32 |
0.6 |
10.3 |
33.8 |
|
5 |
41 |
0.9 |
10.2 |
33.5 |
|
10 |
50 |
1.2 |
10.2 |
33.5 |
|
15 |
59 |
1.7 |
10.2 |
33.5 |
|
20 |
68 |
2.3 |
10.1 |
33.1 |
|
25 |
77 |
3.2 |
10.0 |
32.8 |
|
30 |
86 |
4.3 |
9.9 |
32.5 |
|
35 |
95 |
5.6 |
9.8 |
32.2 |
|
40 |
104 |
7.7 |
9.5 |
31.2 |
|
45 |
113 |
9.6 |
9.4 |
30.8 |
|
50 |
122 |
12.5 |
9.1 |
29.9 |
|
55 |
131 |
15.7 |
8.7 |
28.5 |
|
60 |
140 |
20 |
8.3 |
27.2 |
|
65 |
149 |
25 |
7.8 |
25.6 |
|
70 |
158 |
32.1 |
7.1 |
23.3 |
|
75 |
167 |
38.6 |
6.4 |
21 |
|
80 |
176 |
47.5 |
5.5 |
18 |
|
85 |
185 |
57.8 |
4.4 |
14.4 |
|
90 |
194 |
70 |
3.2 |
10.5 |
|
95 |
203 |
84.5 |
1.7 |
5.6 |
|
100 |
212 |
101.33 |
0.0 |
0 |
鎶芥按纰�?x矛)娴狀嚡琛�?/h3>
瑕佺煡閬�锛屼竴鑸敱鍒堕�犲晢鎻愪緵鐨勬苯铦曚綑閲忚(gu墨)鑼冧娇鐢ㄥ喎姘� 銆� 纰�?x矛)娴狀嚡琛�?锛岄�欎簺鍊煎繀闋堥檷浣庤�冩叜鍒板京(f霉)闆滅殑鏈夋(j墨)娑查珨鐨勮捀姘ｉ噵鏀炬�ц兘銆�
|
娴侀珨 |
婧害锛堚剝锛� |
钂告埃澹擄紙kPa绲曪級 |
|
涔欓唶 |
20 |
5.9 |
|
65 |
58.2 |
|
閱嬮吀鐢查叝 |
20 |
22.8 |
|
55 |
93.9 |
璜�(q菒ng)娉ㄦ剰锛岄�氶亷(gu貌)娉甸牠闁�(k膩i)鐧�(f膩)鐛�(d煤)绔嬬殑娑查珨锛屽彲鐢ㄤ簬鐗涢爴娑查珨锛屽姹芥补锛屾煷娌规垨椤�(l猫i)浼肩殑姘村緸鍒堕�犲晢鐨勬�ц兘鏇茬窔(xi脿n)銆� 瑕佺煡閬撴墍闇�鐨勫姛鐜囧彇姹轰簬娑查珨鐨勫瘑搴�锛屽繀闋堥��(j矛n)琛岃(di脿o)鏁淬��
娉夐仈(d谩)绠￠亾娉靛皥(zhu膩n)妤�(y猫)寤�(ch菐ng)瀹�
鐩搁棞(gu膩n)鐢�(ch菐n)鍝侊細
ISG鍨嬬郴鍒楀柈绱�(j铆)绠￠亾闆㈠績娉� ISW鑷ュ紡绠￠亾闆㈠績娉� SG鍨嬪柈绱�(j铆)绠￠亾澧炲娉�
SGR绯诲垪绔嬪紡鐔辨按绠￠亾娉� CDLF鍨嬩笉閵归嫾绔嬪紡澶氱礆(j铆)绠￠亾娉�
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