公开(公告)号：EP1729013B1

公开(公告)日：2007-12-26

申请号：EP05425396.8

申请日：2005-05-31

申请人： Pedrollo S.p.a.

发明人： Pedrollo, Silvano

IPC分类号： F04D29/62 ,  F04D29/70 ,  F04D13/08

CPC分类号： F04D29/628 ,  F04D29/708

公开(公告)号：EP1729013A1

公开(公告)日：2006-12-06

申请号：EP05425396.8

申请日：2005-05-31

申请人： Pedrollo S.p.a.

发明人： Pedrollo, Silvano

IPC分类号： F04D29/62 ,  F04D29/70 ,  F04D13/08

CPC分类号： F04D29/628 ,  F04D29/708

摘要： A submersible centrifugal pump 1 comprises a containment jacket 2, an intake body 5 and a delivery body 4 welded to the jacket 2 containing the hydraulic stages 10, each consisting of an impeller 11 and a diffuser 12. The stages 10 are compacted in the jacket between the delivery body 4 and the intake body 5 by clamping means which comprise at least one screw 29 or one tie rod. There is also an easily removable non-return valve 22 located in the delivery body 4.

摘要翻译： 潜水离心泵1包括容纳套2，进气体5和焊接到包含液压级10的套2的输送体4，每个级包括叶轮11和扩散器12.级10在套中压实 在输送体4与进气体5之间通过包括至少一个螺杆29或一个拉杆的夹紧装置。 在输送体4中还有一个易于拆卸的止回阀22。

公开(公告)号：EP1729009A1

公开(公告)日：2006-12-06

申请号：EP05425397.6

申请日：2005-05-31

申请人： Pedrollo S.p.a.

发明人： Pedrollo, Silvano

IPC分类号： F04D15/00

CPC分类号： F04D15/0011

摘要： A centrifugal pump comprises a containment body (2) with an infeed pipe (4) and an outfeed pipe (6); at least one intake stage (9) located in the containment body (2) between the pipes (4, 6), and having at least one impeller (10) for sucking a fluid from the infeed pipe (4) and conveying it towards the outfeed pipe (6); and impeller (10) drive means (7). The pump also has a safety valve (19) located in the containment body (2) and able to switch between an open condition in which it allows fluid to pass from the outfeed pipe (6) to the infeed pipe (4), and a closed condition in which it does not allow the passage of the fluid. The pump also comprises safety valve (19) locking means (26) for keeping the valve (19) in the closed position until the pressure of the fluid in the outfeed pipe (6) exceeds a predetermined pressure value P.

摘要翻译： 一种离心泵，包括带有进料管（4）和出料管（6）的容器体（2）; 位于所述管道（4,6）之间的所述容纳体（2）中的至少一个吸入级（9），并且具有至少一个叶轮（10），所述叶轮用于从所述进料管（4）吸入流体并将其朝向 出料管（6）; 和叶轮（10）驱动装置（7）。 该泵还具有安全阀（19），该安全阀位于容纳体（2）中，并且能够在允许流体从出料管（6）流到进料管（4）的打开状态和在打开状态 在这种情况下，它不允许流体通过。 泵还包括用于将阀（19）保持在关闭位置直到出料管（6）中的流体的压力超过预定压力值P的安全阀（19）锁定装置（26）。

公开(公告)号：EP1650440A1

公开(公告)日：2006-04-26

申请号：EP04425788.9

申请日：2004-10-20

申请人： Pedrollo S.p.a.

发明人： Pedrollo, Silvano

IPC分类号： F04D29/42

CPC分类号： F04D29/426 ,  F04D5/002 ,  F04D29/026 ,  F05D2230/60 ,  F05D2300/111 ,  F05D2300/171 ,  F05D2300/172 ,  F05D2300/1721 ,  F05D2300/43

摘要： A method for producing the pump casing for peripheral pumps with axial suction, comprising the operating steps of: producing a pump casing (1) outer housing element (17); producing a pump casing (1) insert (18), designed, in practice, to form a pump pumping chamber (7) with a part (5) that connects a pump to a motor; and attaching the insert (18) inside the outer housing element (17). The claims also cover a pump casing for peripheral pumps with axial suction comprising at least a housing element (17) forming a pump casing outer surface (3), and an insert (18) attached to the inside of the housing element (17) and forming an operating surface (4).

摘要翻译： 一种生产用于与轴向吸入泵外围设备的泵壳，包括以下操作步骤的方法：制作一个泵壳（1）外壳元件（17）; 制造泵壳（1）插入（18）设计的，在实践中，以形成一个泵泵送室（7）与（5）做了部分连接的泵到马达; 和附连在外壳元件（17）内的插入件（18）。 因此，权利要求覆盖用于与轴向吸入外围泵，其包括至少一个壳体元件（17）形成一泵壳外表面（3）的泵壳体，并插入（18）附连到所述壳体元件（17）的内侧和 在操作表面上形成（4）。

公开(公告)号：EP2060791A1

公开(公告)日：2009-05-20

申请号：EP07425715.5

申请日：2007-11-13

申请人： Pedrollo S.p.a.

发明人： Pedrollo, Silvano

IPC分类号： F04D1/06 ,  F04D29/42

CPC分类号： F04D29/426 ,  F04D1/063 ,  F04D29/4293

摘要： A centrifugal electric pump with axial suction comprises at least two impellers (6) hydraulically mounted in series in the main casing and in which, D being the distance between the central axis (17) of the delivery opening (5) and the first connecting plane (13) defined by the suction opening (4), A being the distance between the axis of rotation (X) of the impellers (6) and the electric pump (1) supporting plane (10), and B being the distance between the axis of rotation (X) and the second connecting plane (20) defined by the delivery opening (5); the following relations apply: 0.7 ≤ A / B ≤ 0.9 ; 1.3 ≤ A / D ≤ 2.25 ; and 1.6 ≤ B / D ≤ 2.9.

摘要翻译： 具有轴向抽吸的离心电泵包括至少两个串联地液压地安装在主壳体中的叶轮（6），并且其中D是输送开口（5）的中心轴线（17）与第一连接平面 （6）的旋转轴线（X）和电动泵（1）支撑平面（10）之间的距离为A，并且B为所述吸入口（4）与所述电动泵 （X）和由所述输送口（5）限定的所述第二连接平面（20）之间; 以下关系适用：0.7≤A/B≤0.9; 1.3≤A/D≤2.25; 1.6≤B/D≤2.9。

公开(公告)号：EP1729009B1

公开(公告)日：2007-07-11

申请号：EP05425397.6

申请日：2005-05-31

申请人： Pedrollo S.p.a.

发明人： Pedrollo, Silvano

IPC分类号： F04D15/00

CPC分类号： F04D15/0011