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進口單級單吸離心泵

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產品簡介

一、進口單級單吸離心泵產品概述美國尼科NICO進口單級單吸離心泵根據離心泵與立式泵的結構組合設計的高效節(jié)能產品

詳細介紹

一、進口單級單吸離心泵產品概述

美國尼科NICO進口單級單吸離心泵根據離心泵與立式泵的結構組合設計的高效節(jié)能產品。美國尼科NICO采用*水力模型優(yōu)化設計而成,在其結構基礎上與一般臥式管道緊湊型單級單吸離心泵組合設計而成,解決了聯軸器固有的容易松動的弊端后,性能更加穩(wěn)定。單級單吸離心泵又名增壓泵,單級單吸泵的基礎構造部分是葉輪,泵體,泵軸,軸承,密封環(huán),填料函六局部。進口單級單吸離心泵主要由泵體、葉輪、軸、機械密封組成。單級單吸離心泵啟動后,泵軸帶動葉輪一起作高速旋轉運動,迫使預先充灌在葉片間液體旋轉,在慣性離心力的作用下,液體自葉輪中心向外周作徑向運動。液體在流經葉輪的運動過程獲得了能量,靜壓能增高,流速增大。當液體離開葉輪進入泵殼后,由于殼內流道逐漸擴大而減速,部分動能轉化為靜壓能,Z后沿切向流入排出管路。所以蝸形泵殼不僅是匯集由葉輪流出液體的部件,而且又是一個轉能裝置。當液體自葉輪中心甩向外周的同時,葉輪中心形成低壓區(qū),在貯槽液面與葉輪中心總勢能差的作用下,致使液體被吸進葉輪中心。依靠葉輪的不斷運轉,液體便連續(xù)地被吸入和排出。液體在離心泵中獲得的機械能量Z終表現為靜壓能的提高。進口單級單吸離心泵是離心泵中DJ為簡單的一種。所謂單級是指泵內只有一級葉輪,單吸是指水從葉輪一側吸入。這種泵一般流量較小,多屬于小型泵。構造特點是葉輪固定在轉軸的一端,支承其重量的軸承位于軸的另一端,受力有如懸臂梁,故又稱懸臂式離心泵。泵的轉動部分包括:葉輪、泵軸、軸承、聯軸器等,固定部分包括泵體、軸承支架、泵的進口和出口等。

二、進口單級單吸離心泵選型參數

公稱通徑:DN15-DN500

流量范圍:3.6~1450m3/h

揚程范圍:15~150m

功率范圍:0.75-250kW

轉速范圍:2900r/min

溫度范圍:-20℃~120℃

工作壓力:≤1.6Mpa

泵體材質:WCB、304、316、四氟

三、進口單級單吸離心泵的特點

1、單吸離心泵為立式結構,進出口口徑相同,且位于同一中心線上,可象閥門一樣安裝于管路之中,外形緊湊美觀,占地面積小,建筑投入低,如加上防護罩則可置于戶外使用。

2、單吸離心泵葉輪直接安裝在電機的長軸上,軸向尺寸短,結構緊湊,泵與電機軸承配置合理,能有效地平衡泵運轉產生的徑向和軸向負荷,從而保證了泵的運行平穩(wěn),振動小、噪音低。

3、單吸離心泵軸封采用機械密封或機械密封組合,采用進口鈦合金密封環(huán)、中型耐高溫機械密封和采用硬質合金材料,耐磨密封,能有效地延長機械密封的使用壽命。

4、單吸離心泵安裝檢修方便,無需拆動管路系統,只要卸下泵聯體座螺母即可抽出全部轉子部件。

5、單吸離心泵可根據使用要求即流量和揚程的需要采用泵的串、并聯運用方式。

6、單吸離心泵可根據管路布置的要求采用泵的豎式和橫式安裝。

四、進口單級單吸離心泵主要用途

1、單級清水泵,供輸送清水及物理化學性質類似于清水的其他液體之用,適用于工業(yè)和城市給排水,高層建筑增壓送水,園林噴灌,消防增壓,遠距離輸送,暖通制冷循環(huán)、浴室等冷暖水循環(huán)增壓及設備配套,使用溫度T≤80℃。

2、單級熱水泵廣泛適用于:冶金、化工、紡織、造紙、以及賓館飯店等鍋爐熱水增壓循環(huán)輸送及城市采暖系統,使用溫度T≤120℃。

3、單級化工泵,供輸送不含固體顆料,具有腐蝕性,粘度類似于水的液體,適用于石油、化工、冶金、電力、造紙、食品制藥和合成纖維等部門,使用溫度為-20~C~+120℃。

4、臥式單級油泵,供輸送汽油、煤油、柴油等用油類產品或易燃、易爆液體,被輸送介質溫度為-20~C~+120℃。

5、電機:將電能轉化為機械能的主要部件。

6、泵座:是泵的主體,起到支撐固定作用。

7、葉輪:離心泵的核心部分,它轉速高、出力大,葉輪上的葉片又起到主要作用,葉輪在裝配前要通過靜平衡實驗。葉輪上的內外表面要求光滑,以減少水流的摩擦損失。

8、泵軸:電動機相連接,它是傳遞機械能的主要部件。

9、機械密封:保持貼合并相對滑動而構成的防止流體泄漏的裝置。介質等不同在基礎上派生出熱水泵、高溫泵、化工泵、油泵等。

五、進口單級單吸離心泵工作條件

1、環(huán)境溫度<40℃,相對濕度<95%。

2、所輸送介質中固體顆粒體積含量不超過單位體積的0.1%,粒度<0.2mm。

注:如使用介質為帶有細小顆粒,請在訂貨時注明,以便廠家采用耐磨式機械密封。

六、進口單級單吸離心泵產品特點

·運行平穩(wěn):泵軸的同心度葉輪優(yōu)異的動靜平衡,保證平穩(wěn)運行,振動。

·滴水不漏:不同材質的硬質合金密封,保證了不同介質輸送均無泄漏。

·噪音低:兩個低噪音軸承下的水泵,運轉平穩(wěn),除電機微弱聲響,基本無噪聲。

·故障率低:結構簡單合理,關鍵部分采用配套,整機工作時間大大提高。

·維修方便:更換密封、軸承、簡易方便。

·占地更?。撼隹诳上蜃蟆⑾蛴?、向上三個方向,便于管道布置安裝,節(jié)省空間。

七、進口單級單吸離心泵結構圖



泵體堵頭機械密封
葉輪擋圈電機

八、進口單級單吸離心泵內部結構圖


1電動機:直接與水泵聯接傳送動力,采用加長軸電機。

2泵軸:與電機同軸,為電機加長軸,確保了軸的同心,使泵運轉平穩(wěn)。噪音低、振動小,采用鍍鉻處理,增強了使用壽命。

3擋水圈:防止因密封漏水而使電機進水。

4機械密封:采用不銹鋼、碳化鎢、氟橡膠等材料制成。平衡式耐高溫。高壓機械密封,運行壽命長,不易滲漏,對軸無磨損,不積水垢,保證工作環(huán)境的整潔。

5取壓塞:可安裝壓力表直觀監(jiān)控泵的運行。

6泵體:壓出塞和吸入室設計合理,設有安裝底腳,便于安裝和運行穩(wěn)固。

7放氣塞:灌泵時排凈泵內空氣,保證了泵的正常啟動。

8葉輪:采用合理的水力模型設計而成,可靠性較好。

九、進口單級單吸離心泵流量意義

十、進口單級單吸離心泵起動與停車:泵起動前準備

1、試驗電機轉向是否正確,從電機頂部往泵看為順時針旋轉,試驗時間要短,以免使機械密封干磨損。

2、打幵排氣口使液體充滿整個泵體,待滿后關閉排氣閥。

3、檢查各部位是否正常。

4、用手盤動泵以使?jié)櫥哼J入機械密封端面。

5、高溫型應先逬行預熱,升溫速度50℃/小時,以保證各部受熱均勻。

十一、進口單級單吸離心泵起動前檢查

1、全開進口處閥門。2、關閉吐出管路閥門。3、起動電機,觀察泵運行是否正桷。4、調節(jié)出口閥幵度以所需工況,如用戶在泵出口處裝有流靈表或壓力表,應通過調節(jié)出口閥門幵度使泵在性能參數表所列的頷定點上運轉,如用戶在泵出口處裝有流量表或壓力表,應通過調節(jié)出口闔門幵度,測量泵的電機電流,使電機在額定電流內運行,否則將造成泵超負荷運行(即大電流運行)至使電機燒壞。調正好的出口閥門幵啟大與小和管道工況有關。5、檢査軸封泄漏情況,正常時機械密封泄漏應小于3滴/分。6、檢查電機、軸承處溫升≦70℃。

停車

1、高溫型先降溫,降溫速度<10℃/分,把溫度降低到80℃以下,才能停車。2、關閉吐出管路閥門。3、停止電機。4、關閉進口處閥門。5、如長期停車,應將泵內液體放盡。

進口單級單吸離心泵的維護

1、運行中的維護

(1)進口處管道必須充滿液體,禁止泵在汽蝕狀態(tài)下長期運行。(2)定時檢查電機電流値,不得超過電機頷定電流。(3)泵進行長期運行后,由于機械磨損,使機組噪音及振動增大時,應停車檢查,必要時可更換易損零件及軸承,機組大修期一般為一年。

2、機械密封維護

(1)機械密封潤滑應清潔無固體顆粒。(2)嚴禁機械密封在干磨情況下工作。(3)起動前應先盤動泵(電機)幾圈,以免突然起動造成石墨環(huán)斷裂損壞。(4)密封泄漏量允差3滴/分。否則應檢查。

十二、進口單級單吸離心泵性能參數

序號規(guī)格流量揚程
(m)
效率
(%)
轉速
(r/min)
電機功率
(kW)
必須汽蝕余量
(NPSH)r
重量
(kg)
(m3/h)(L/s)
120-1101.80.5162528000.372.325
2.50.69153428000.372.3
3.30.9113.53528000.372.3
220-1601.80.5331929000.752.329
2.50.69322529000.752.3
3.30.91302329000.752.3
325-1102.80.78163429000.552.326
41.11154229000.552.3
5.21.4413.54129000.552.3
425-1252.80.7820.62829000.752.328
41.11203629000.752.3
5.21.44183529000.752.3
525-125A2.50.69173529000.552.327
3.61163529000.552.3
4.61.2814.43529000.552.3
625-1602.80.78332429001.52.339
41.11322429001.52.3
5.21.44302429001.52.3
725-160A2.60.12293129001.12.334
3.71.03283129001.12.3
4.91.36263129001.12.3
832-1004.512.512.54429000.55227
932-100(I)4.41.2213.24829000.75232
6.31.7512.55429000.752
8.32.3211.35329000.752
1032-1253.50.97224029000.752.328
51.39204429000.752.3
6.51.8184229000.752.3
1132-125A3.10.8617.64329000.552.3
4.51.25164329000.552.3
5.81.6114.44329000.552.3
1232-1606.55324429001.52.339
1332-160A41.1253429001.1238
1432-160(I)4.41.2233.23429002.2247
6.31.75324029002.22
8.32.3230.24229002.22
1532-2004.512.5503229003255
1632-200(I)4.41.2250.52629004243
6.31.755033290042
8.32.324835290042
1732-200A2.80.7844.63429002.2274
41.11444029002.22
5.21.4442.74229002.22
1840-1004.41.2213.24829000.552.332
6.31.7512.55429000.552.3
8.32.3111.35329000.552.3
1940-100A3.91.0810.65229000.372.3
5.61.56105229000.372.3
7.42.0695229000.372.3
2040-1254.41.22214129001.12.334
6.31.75204629001.12.3
8.32.31184329001.12.3
2140-125A3.91.0817.64029000.752.333
5.61.56164529000.752.3
7.42.0614.44129000.752.3
2240-1604.41.22333529002.22.347
6.31.75324029002.22.3
8.32.31304029002.22.3
2340-160A4.11.14293429001.52.343
5.91.64283929001.52.3
7.82.1726.33929001.52.3
2440-160B3.81.0625.53429001.12.338
5.51.53243829001.12.3
7.2222.53729001.12.3
2540-2004.41.225126290042.374
6.31.755033290042.3
8.32.314832290042.3
2640-200A4.11.144536290032.362
5.91.644431290032.3
7.82.174230290032.3
2740-200B3.71.03382929002.22.352
5.31.47362929002.22.3
71.9434.52929002.22.3
2840-2504.41.22822429007.52.3105
6.31.75802829007.52.3
8.32.31742829007.52.3
2940-250A4.11.14722429005.52.398
5.91.64702829005.52.3
7.82.17652729005.52.3
3040-250B3.71.0661.523290042.377
5.31.536027290042.3
71.945626290042.3
3140-100(I)8.82.4413.25529001.12.334
12.53.4712.56229001.12.3
16.34.5311.36029001.12.3
3240-100(I)A82.2210.66029000.752.332
113.05106029000.752.3
14.54.0396029000.752.3
3340-125(I)8.82.4421.24929001.52.338
12.53.47205829001.52.3
16.34.5317.85729001.52.3
3440-125(I)A82.22175729001.12.333
113.05165729001.12.3
14.54.03145729001.12.3
3540-160(I)8.82.443345290032.356
12.53.473252290032.3
16.34.533051290032.3
3640-160(I)A8.22.28294429002.22.347
11.73.25285129002.22.3
15.24.22265029002.22.3
3740-160(I)B7.32.38235029001.52.343
10.42.89225029001.52.3
13.53.7520.55029001.52.3
3840-200(I)8.82.4451.23829005.52.385
12.53.47504629005.52.3
16.34.53484629005.52.3
3940-200(I)A8.32.314537290042.375
11.73.254445290042.3
15.34.254245290042.3
4040-200(I)B7.52.083744290032.363
10.62.943644290032.3
13.83.833444290032.3
4140-250(I)8.82.4481.2312900112.3145
12.53.4780382900112.3
16.34.5377.5402900112.3
4240-250(I)A8.22.28713829007.52.395
11.73.22703829007.52.3
15.24.22683829007.52.3
4340-250(I)B7.62.1161.43729005.52.394
10.83603729005.52.3
143.89583729005.52.3
4440-250(I)C7.11.9753.23629005.52.388
102.78523629005.52.3
13.13.6450.43629005.52.3
4550-1008.82.4413.65529001.12.336
12.53.4712.56229001.12.3
16.34.5311.36029001.12.3
4650-100A82.22116029000.752.335
113.05106029000.752.3
14.54.0396029000.752.3
4750-1258.82.4421.54929001.52.343
12.53.47205829001.52.3
16.34.5317.85729001.52.3
4850-125A82.22175729001.12.338
113.05165729001.12.3
14.54.03145729001.12.3
4950-1608.82.443345290032.359
12.53.473252290032.3
16.34.533051290032.3
5050-160A8.22.28294429002.22.351
11.73.25285129002.22.3
15.24.22265029002.22.3
5150-160B7.32.38235029001.52.347
10.42.89225029001.52.3
13.53.7520.55029001.52.3
5250-2008.82.44523829005.52.3101
12.53.47504629005.52.3
16.34.53484629005.52.3
5350-200A8.32.3145.837290042.380
11.73.254445290042.3
15.34.254845290042.3
5450-200B7.52.083744290032.368
10.62.943644290032.3
13.83.833444290032.3
5550-2508.82.4482292900112.3160
12.53.4780382900112.3
16.34.5377.5402900112.3
5650-250A8.22.2871.53829007.52.3115
11.63.22703829007.52.3
15.24.22683829007.52.3
5750-250B7.62.1161.43729005.52.3114
10.83603729005.52.3
143.89583729005.52.3
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72020018811450555
900"25015741450555
253300-235A45012517.2741450455970
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254300-235B420116.714.3731450375925
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256300-250A45013619.5811450456980
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280500-315100027834.578148016062070
1200333327814801606
1450403277814801606

十三、進口單級單吸離心泵故障與排除

故障現象故障原因排除方法
1、水泵不出水a、進出口閥門未打開,進出管路堵塞,流道葉輪堵塞。
b、電機運行方向不對,電機缺相轉速很慢。
c、吸入管漏氣。
d、泵沒灌滿液體,泵腔內有空氣。
e、進口供水不足,吸程過高,底閥漏水。
f、管路阻力過大,泵選型不當。
a、檢查,去除堵塞物。
b、調整電機方向,緊固電機接線。
c、擰緊各密封面,排除漏氣。
d、灌滿液體并打開排氣閥,排盡空氣。
e、停機,檢查、調整(并網自來水管或帶吸程使用易出現此現象)。
f、減少管路彎道,重新選泵。
2、水泵流量不足a、先按1.原因檢查。
b、管道、泵流道葉輪部分堵塞,水垢陳積,閥門開度不足。
c、電壓偏低。
d、葉輪磨損。
a、先按1.排除。
b、去除堵塞物,重新調整閥門開度。
c、穩(wěn)壓。
d、更換葉輪。
3、功率過大a、超過額定流量使用。
b、吸程過高。
c、泵軸承磨損。
a、調節(jié)流量,關小出口閥門。
b、降低。
c、更換軸承。
4、雜音振動a、管路支撐不穩(wěn)。
b、液體混有氣體。
c、產生汽蝕。
d、軸承損壞。
e、電機超載發(fā)熱運行。
a、穩(wěn)固管路。
b、提高吸入壓力排氣。
c、降低真空度。
d、更換軸承。
e、調整按5。
5、電機發(fā)熱a、流量過大,超載運行。
b、碰擦。
c、電機軸承損壞。
d、電壓不足。
a、關小出口閥。
b、檢查排除。
c、更換軸承。
d、穩(wěn)壓。
6、水泵漏水a、機械密封磨損。
b、泵體有砂孔或破裂。
c、密封面不平整。
d、安裝螺栓松懈。
a、更換。
b、焊補或更換。
c、修整。
d、緊固。


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