公开(公告)号：US20150233383A1

公开(公告)日：2015-08-20

申请号：US14429038

申请日：2013-05-30

Applicant: GRUNDFOS HOLDING A/S

Inventor： Allan Jessen

IPC: F04D29/08 ,  F04D25/06 ,  F04D29/66 ,  F04D19/02

CPC classification number: F04D29/086 ,  F04D19/028 ,  F04D25/0686 ,  F04D29/566 ,  F04D29/669

Abstract: A pump device (2), to be mounted coaxially in a pipe (3), includes an axial or mixed flow pump with a guide tube (7) arranged around a propeller portion of the pump device (2). In a mounting position, a gap (11) is formed between an upper end (16) of the guide tube (7) at an outlet portion (8) of the pump device (2) and the column pipe (3). The guide tube (7) has an elastic portion (12) connected to an outlet end of the guide tube (7). The elastic portion (12) is bendable in a radial direction towards the column pipe (3) in order to at least partially, in particular completely, close the gap (11) during operation of the pump device (2). Further, a pump system (1) includes the pump device (2).

Abstract translation: 将同轴安装在管道（3）中的泵装置（2）包括轴向或混合流动泵，其具有围绕泵装置（2）的螺旋桨部分布置的引导管（7）。 在安装位置，在泵装置（2）的出口部（8）与列管（3）之间的导管（7）的上端（16）之间形成间隙（11）。 引导管（7）具有连接到引导管（7）的出口端的弹性部分（12）。 为了在泵装置（2）的操作期间至少部分地，特别是完全地闭合间隙（11），弹性部分（12）在径向方向上可朝向柱管（3）弯曲。 此外，泵系统（1）包括泵装置（2）。

公开(公告)号：US10330109B2

公开(公告)日：2019-06-25

申请号：US14916416

申请日：2015-03-17

Applicant: GRUNDFOS HOLDING A/S

Inventor： Allan Jessen

IPC: F04D29/10 ,  F04D29/12 ,  F16J15/16 ,  F16J15/3296 ,  F16J15/40 ,  G01F23/02 ,  F04D3/00 ,  F04D29/043 ,  F04D29/18 ,  F04D29/52 ,  F04D13/08 ,  F01D9/06

Abstract: An axial pump operated in a standing manner has an inner housing part (2), in which a shaft (10) carrying a propeller wheel (4) is mounted. An outer housing part (1) is provided, wherein a flow path (3) for the fluid delivered by the propeller wheel (4) is formed between the inner and outer housing part. The inner housing part (2) is designed for receiving a fluid buffer for at least one seal (15) and includes an opening (19, 20) for the supply and drainage of the buffer. A recess (24, 25) is provided in the outer housing part (1), via which recess the opening (19, 20) is accessible from the outside. A valve (23) is provided in or on the inner housing part (2), with which valve the conduit leading through the opening (19) can be blocked.