公开(公告)号：EP2742242B1

公开(公告)日：2018-07-04

申请号：EP12778475.9

申请日：2012-08-09

申请人： ITT Manufacturing Enterprises LLC

发明人： BEHNKE, Paul, W. ,  KOREN, Matthew, J.

IPC分类号： F04D29/22

CPC分类号： F04D29/0416 ,  F04D1/006 ,  F04D29/167 ,  F04D29/2266

摘要： Apparatus, including a vertical double-suction pump, is provided featuring a pump casing and a double suction impeller arranged therein on a shaft. The pump casing has a pump casing wall. The double suction impeller has upper and lower shrouds with metal rims configured to form upper and lower isolating annuli between the double suction impeller and the wall of the pump casing in order to impede a recirculation flow from an impeller discharge to be able to act of the upper and lower shrouds and create a controlled axial thrust load from differentiated hydraulic pressure on the upper and lower shrouds. The upper and lower isolating annuli may also be geometrically varied between the upper and lower shrouds of the double suction impeller to create a pressure differential in a direction parallel to an axis of rotation of the double suction impeller.

公开(公告)号：EP2742242A1

公开(公告)日：2014-06-18

申请号：EP12778475.9

申请日：2012-08-09

申请人： ITT Manufacturing Enterprises LLC

发明人： BEHNKE, Paul, W. ,  KOREN, Matthew, J.

IPC分类号： F04D1/00 ,  F04D29/041 ,  F04D29/16

CPC分类号： F04D29/0416 ,  F04D1/006 ,  F04D29/167 ,  F04D29/2266

摘要： Apparatus, including a vertical double-suction pump, is provided featuring a pump casing and a double suction impeller arranged therein on a shaft. The pump casing has a pump casing wall. The double suction impeller has upper and lower shrouds with metal rims configured to form upper and lower isolating annuli between the double suction impeller and the wall of the pump casing in order to impede a recirculation flow from an impeller discharge to be able to act of the upper and lower shrouds and create a controlled axial thrust load from differentiated hydraulic pressure on the upper and lower shrouds. The upper and lower isolating annuli may also be geometrically varied between the upper and lower shrouds of the double suction impeller to create a pressure differential in a direction parallel to an axis of rotation of the double suction impeller.

摘要翻译： 提供了一种包括立式双吸泵的装置，其特征在于其上设置有泵壳体和布置在其中的双吸叶轮。 泵壳具有泵壳壁。 双吸叶轮具有上和下护罩，其具有金属边缘，其被配置成在双抽风叶轮和泵壳的壁之间形成上隔离隔离环和下隔离环，以阻止来自叶轮排放的再循环流动，从而能够起作用 上下护罩，并在上下护罩上产生不同液压的受控轴向推力载荷。 上和下隔离环也可以在双吸叶轮的上和下护罩之间在几何上变化，以在平行于双吸叶轮的旋转轴线的方向上产生压力差。