渦殼式混流泵A雄縣渦殼式混流泵200HW-4
（3）配套功率它是指水泵應(yīng)選配的動(dòng)力機(jī)的功率，因此又稱(chēng)用功率。常用符號(hào)為N配，它比軸功率大。這是因?yàn)閯?dòng)力機(jī)把動(dòng)力傳遞給水泵的過(guò)程中，有傳動(dòng)損失；同時(shí)還要考慮水泵工作時(shí)，流量及揚(yáng)程有波動(dòng)而可能出現(xiàn)動(dòng)力機(jī)，因此動(dòng)力機(jī)需有比水泵軸功率大的功率儲(chǔ)備。配套功率可按下式求得：動(dòng)力安全系數(shù)×（千克/秒）×揚(yáng)程（米）配套功率（千瓦）=—————————————————————102×水泵效率×傳動(dòng)效率動(dòng)力安全系數(shù)（或稱(chēng)備用系數(shù)）可根據(jù)水泵軸功率大小確定，軸功率小時(shí)取大值。傳動(dòng)交率要根據(jù)傳動(dòng)類(lèi)型和傳動(dòng)方式確定。采用聯(lián)軸器直接傳動(dòng)時(shí)，取0.99。采用皮帶傳動(dòng)時(shí)，開(kāi)口式傳動(dòng)取0.98，交叉?zhèn)鲃?dòng)取0.9，半交叉?zhèn)鲃?dòng)取0.92～0.94；
*技術(shù)參數(shù)
(2)改變轉(zhuǎn)速的方法：改變皮帶輪外徑或改變齒輪減速器傳動(dòng)比，也可選用不同轉(zhuǎn)速的動(dòng)力機(jī)。jdhuiquan717
(3)水泵轉(zhuǎn)速改變后，其流量(Q)、揚(yáng)程(H)和功率(N)的變化關(guān)系如下式所示： Q1=Q*n1/n H1=H*(n1/n)2 N1=N*(n1/n)3
式中：Q1、H1、N．分別代表轉(zhuǎn)速改變后的流量、揚(yáng)程和功率。 Q、H、N分別代表規(guī)定轉(zhuǎn)速下的流量、揚(yáng)程和功率。
(4)水泵轉(zhuǎn)速提高后，耗用功率增加，吸上真空度降低，壽命縮短。過(guò)分提高轉(zhuǎn)速會(huì)發(fā)生其它事故，故應(yīng)慎用。
(5)水泵轉(zhuǎn)速過(guò)分降低時(shí)，泵的使用效益低，為此，應(yīng)盡量避免泵在過(guò)低轉(zhuǎn)速下運(yùn)行。用戶(hù)應(yīng)按性能曲線圖選擇使用。
渦殼式混流泵A雄縣渦殼式混流泵200HW-4
（1）QJ型性能范圍流量2～500米3/時(shí)，揚(yáng)程14～336米，配套功率0.55～160千瓦，適用井徑100～400毫米，共8種，有83個(gè)YQS型潛水異步電動(dòng)機(jī)的規(guī)格，組成QJ型潛水電泵系列共338個(gè)系列型號(hào)。（2）使用條件電源為50赫茲、380伏的三相交流電源；水溫不超過(guò)20°C；井水含砂量9重量比）不超過(guò)0.01%；井水酸堿PH值為6.5～8.5；電機(jī)和泵應(yīng)全部浸入水中運(yùn)行。（3）結(jié)構(gòu)特點(diǎn)水泵位于電泵上端，為離心式或混流式，采用水潤(rùn)滑軸承，與電機(jī)軸用聯(lián)軸器剛性聯(lián)接。上端設(shè)有逆止閥體，以泵停機(jī)時(shí)倒流引起的超速反轉(zhuǎn)。電機(jī)位于電泵下端，為密封式充水濕式結(jié)構(gòu)。定子繞組采用耐水的聚乙烯絕緣的尼龍護(hù)套多層結(jié)構(gòu)電磁線。
2、允許吸上真空度[Hs]與必需汽蝕余量[NPSH]r的換算關(guān)系：
[Hs]≈10-[HPSH]c
[NPSH]r≈[NPSH]C+0.3
式中：[Hs]-允許吸上真空度 米
[NPSH]C-臨界汽蝕余量 米
[NPSH]r-必需汽蝕余量 米
*特征描述
HW 型蝸殼式混流泵是按國(guó)家標(biāo)準(zhǔn)最新系列而設(shè)計(jì)的高節(jié)能產(chǎn)品。其性能指標(biāo)均達(dá)到國(guó)際先進(jìn)水平，省材節(jié)能效果顯著。延伸搜索：水環(huán)真空泵
（一）用途
HW型混流泵為臥式、單級(jí)、單吸、懸臂蝸殼式混流泵，適用于農(nóng)田排灌、工業(yè)、城鎮(zhèn)給排水及船塢、碼頭引水等。延伸搜索：水環(huán)真空泵
（二）特點(diǎn)
體積小、重量輕、流量大、效率高，汽蝕性能好，高效區(qū)范圍寬廣而平坦，結(jié)構(gòu)簡(jiǎn)單，使用管理方法，維修容易。延伸搜索：水環(huán)真空泵
（三）型號(hào)說(shuō)明
以250HW—8為例：
250—泵進(jìn)（出）水口直徑為250毫米。
8—泵總揚(yáng)長(zhǎng)為8米。
（四）水泵的傳動(dòng)方式
我廠生產(chǎn)的HW型系列混流泵均機(jī)（電）兩用，其轉(zhuǎn)動(dòng)方式視各地區(qū)動(dòng)力情況而定，訂貨時(shí)根據(jù)原動(dòng)機(jī)的型號(hào)（功率、轉(zhuǎn)速）確定水泵的傳動(dòng)方式，以定皮帶輪的大小或聯(lián)軸器的規(guī)格。延伸搜索：水環(huán)真空泵
（五）水泵轉(zhuǎn)向：
從水泵進(jìn)水口看葉輪為逆時(shí)針?lè)较蛐D(zhuǎn)（即箭頭所示的方向旋轉(zhuǎn)）。
渦殼式混流泵A雄縣渦殼式混流泵200HW-4
The materials for the Water Guide pipe, the pump body and the pump cover are cast iron. There are infiltrating grooves on the inner surface of the rubber guide bearing near the wheel, and the guide bearing is mounted directly in the housing of the pump body, which can be replaced on site after wear. The rolling bearings contained in the pump cover are two single-row phase ball bearings. The main factory producing guanting is Fujian Youxi guanting factory. (Ix) Manual pumping of labor-driven piston pumps, diaphragm pumps and screw pumps and other water extrb tools, collectively referred to as manual pumps. Manual pumps are divided into shallow well dynamic pumps and deep wells manual pumps. The flow rate of shallow well piston pump is 0.34~4.214 cubic meter/time, adapt to the suction process 2~7 meters. The flow rate of the deep well piston pump is 0.056~0.601 cubic meters/When the head is 15~40 m. The flow rate of the diaphragm pump is 0.8~6.01 cubic meters/when the flow rate of the screw pump is 0.056~0.671 cubic meter/time. (10) The pump shell of the pump is generally cast iron, it is easy to crack under the b of mechanical force or thermal stress.
Instructions for use (i) the HW mixed-flow pump is composed of main parts such as pump body, pump cover, impeller, pump shaft and bearing body. (Ii) The pump cover is a part of the pump connected to the inlet pipe, with a specified axial end gap between the end surface and the impeller (maintaining the specified axial bance after eliminating the axial activity gap of the bearing). The gap is too small to produce friction, too large will lead to the pump pressure water reflux, so that the pump efficiency is reduced, through the increase or decrease adjustment paper pad to meet the required requirements of the gap. Extended search: Water ring Vacuum Pump (iii) The sealing device is composed of a filler letter, a water seal letter, a filler cover and a lead powder (or oil immersion) asbestos root. Its role is: 1, in the tea to prevent air inhalation pump, play a sealing role. 2. When pumping, prevent water from flowing out of the pump too much along the shaft. (Iv) Shaft application to protect the shaft does not make it directly friction with the filler, if long-term use found that the bushing wear too much, can change the bushing. (V) The two supports of the pump shaft are bearings in the bearing body, and the bearing has an appropriate amount of grease in its body to lubricate the bearings. (Vi) The baffle on the shaft prevents water from flowing into the bearing body along the pump, thus protecting the bearing and extending its service life.
用途/應(yīng)用領(lǐng)域
混流泵混流泵是一種比轉(zhuǎn)速較高的泵型,廣泛應(yīng)用于農(nóng)田灌溉,防澇排洪,污水處理,電站冷卻系統(tǒng)等領(lǐng)域.在大流量,低揚(yáng)程的應(yīng)用場(chǎng)合下,軸流泵揚(yáng)程,流量變化范圍小,高效區(qū)窄,抗汽蝕性能差,使用混流泵代替軸流泵,能夠在發(fā)揮軸流泵優(yōu)點(diǎn)的基礎(chǔ)上補(bǔ)償這些缺點(diǎn),從而取得更好的使用效果.
高比轉(zhuǎn)速混流泵的設(shè)計(jì)方法
軸面流動(dòng)計(jì)算
采用流線迭代法求解軸面流動(dòng).流線迭代法基于沿任意準(zhǔn)正交線的軸面速度梯度方程和流體運(yùn)動(dòng)的連續(xù)方程,根據(jù)各子流道流量相等的原則,迭代求解沿準(zhǔn)正交線的軸面速度梯度方程即可得到軸面流網(wǎng).通過(guò)流線迭代法,在確定軸面流道輪廓之后,可以通過(guò)所需時(shí)間很短的迭代計(jì)算過(guò)程得到精確的軸面流網(wǎng).圖1是流網(wǎng)所對(duì)應(yīng)的軸面速度沿軸面流線的分布圖.
清水泵，管道泵等產(chǎn)品，首要效力范疇：冶金，礦山，造紙，石油，化工，發(fā)電，污水處理等工作的需求，熱銷(xiāo)。公司本著“質(zhì)量第一，用戶(hù)是上帝，誠(chéng)信守約”的效力主旨。污水泵高壓給水泵以高效的機(jī)制為客戶(hù)供給優(yōu)秀的效力。深受用戶(hù)好評(píng)。公司現(xiàn)有鑄造才能單件單重達(dá)35噸。原料有：耐磨鋼，不銹鋼，雙項(xiàng)不銹鋼，鋁合金，哈氏合金，巴氏合金等耐磨，耐腐蝕資料。吸取了很多的國(guó)外先進(jìn)技術(shù)。前進(jìn)了咱們的工藝水平。產(chǎn)品質(zhì)量安穩(wěn)牢靠彌補(bǔ)了很多技術(shù)缺點(diǎn)具有加工才能，長(zhǎng)度達(dá)18m，加工直徑6m等鏜，數(shù)控設(shè)備。首要產(chǎn)品有：渣漿泵，標(biāo)準(zhǔn)化工泵。全面精確，耐心詳盡，全方位，全過(guò)程。實(shí)：作業(yè)重實(shí)干，講實(shí)績(jī)，務(wù)實(shí)效，兢兢業(yè)業(yè)，腳踏實(shí)地。不搞?？欤好艚莘错憽?
