桃子视频app

全國服務熱線:18631165157
網站公告:
诚信换来金招牌 服务赢得天下客...
公司新聞
聯系我們
18631165157
地址:
安國市南陽工業區
郵箱:
415130881@
電話:
18631165157
傳真:
0312-3427286
手機:
18631165157
公司新聞 News
渣漿泵軸向力的産生原因
添加時間:2020.03.24

渣漿泵軸向力的産生原因
    (1)葉輪前後兩側因壓力不同,前蓋板側壓力低,後蓋板側壓力高,産生了從葉輪後蓋板指向口處的軸向力F1,如圖1- 66所示。其中p1爲時輪吸口前壓力,P2爲葉

輪出口處壓力,密封環半徑爲r1,葉輪外徑爲r2,輪毂半徑爲rhabcd曲线爲葉轮两侧的压力分布曲线。
    (2)由于液流進葉輪和流出葉輪的方向及速度不同而産生的動反力F2,其方向與F1相反。
    此外,對于口壓力較高的懸臂式單吸泵,還要考慮作用在軸端上的口壓力引起的軸向压力,其方向與F1相反。對于立式離心泵,其转子的部分质量力作用于軸向。
2. 軸向力的计算
    (1)叶轮前后压力引起的軸向方F1可按下式估算:
                            F1=kπ(r1-rh)(p2- p1)
    (2)體作用于葉輪口的動反力F2:
                             F2=GCo

式中G---葉輪中流體的質量流量

Co---叶轮進口处的速度。

总的軸向力爲:

F=F1-F2

般來說F1較大,所以軸向力一般指向進口,只有在启动时,由于正常的軸向力还没有建立,动反力比较明显。

Causes of axial force of slurry pump

(1) Due to different pressures at the front and rear sides of the impeller, the pressure at the front cover plate side is low, and the pressure at the rear cover plate side is high, resulting in the axial force F1 from the rear cover plate of the impeller to the inlet, as shown in Figure 1-66. Where P1 is the pressure in front of the suction port of the wheel, P2 is the blade

The radius of sealing ring is R1, the outer diameter of impeller is R2, the radius of hub is RH, the curves of AB and CD are the pressure distribution curves on both sides of impeller.

(2) The dynamic reaction force F2 produced by the different direction and speed of liquid flow entering and leaving the impeller is opposite to F1.

In addition, for cantilever single suction pump with high inlet pressure, the axial pressure caused by the inlet pressure acting on the shaft end should be considered, and its direction is opposite to F1. For vertical centrifugal pump, part of the mass force of the rotor acts on the axial direction.

2. Calculation of axial force

(1) The axial square F1 caused by the front and rear pressure of impeller can be estimated as follows:

F1=kπ(r1-rh)(p2- p1)

(2) The dynamic reaction force F2 of the liquid acting on the impeller inlet is:

F2=GCo

Where G is the mass flow of fluid into impeller;

Co --- speed at impeller inlet.

The total axial force is:

F=F1-F2

Generally speaking, F1 is large, so the axial force of slurry pump manufacturer generally points to the inlet. Only when starting, because the normal axial force has not been established, the dynamic reaction force is obvious.





上一條:渣漿泵軸向力平衡裝置作用

下一條:沒有了

成版人性视频app 草莓视频app在线下载 小草莓app 草莓视频app无限观看 草莓视频APP 草莓成视频人app下载 草莓视频下载app 深夜草莓视频app 向日葵视频app下载 向日葵视频app 茄子视频 茄子视频app下载 茄子视频下载app1 茄子视频app官方下载 丝瓜草莓视频app 丝瓜视频成年版app下载 丝瓜视频app 丝瓜视频 丝瓜成年app短视频网站 荔枝视频app 荔枝视频app看片 荔枝视频男人影院污 猫咪视频APP 猫咪视频 香蕉视频 香蕉频蕉app 香蕉视频ios版app 香蕉app免费下载 香蕉www.5.app网页在线 深夜香蕉视频appvip