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1. 发明授权

EP2745017B1 BEARING ASSEMBLY FOR A VERTICAL TURBINE PUMP 有权
公开(公告)号：EP2745017B1
公开(公告)日：2018-12-12
申请号：EP12824366.4
申请日：2012-08-16
申请人： Weir Floway Inc.
发明人： BOLDT, Daniel, E.
IPC分类号： F01D25/16 , F01D25/18 , F04D1/06 , F04D29/047
CPC分类号： F01D25/166 , F01D25/186 , F04D1/063 , F04D29/047
摘要： A bearing assembly for supporting a drive shaft of a pump is structured with a cylindrical body having an internal cavity filled with a lubricant, a sealing element arrangement positioned at one or both ends of the cylindrical body and a pressure equalization element that functions to equalize the pressure differential that exists between an area within the cylindrical body and outside of the cylindrical body to improve the operating life of the sealing arrangement and the bearing assembly.

2. 发明公开

EP3290712A1 CENTRIFUGAL MOTOR PUMP 审中-公开
标题翻译：离心式马达泵
公开(公告)号：EP3290712A1
公开(公告)日：2018-03-07
申请号：EP17189555.0
申请日：2017-09-06
申请人： CALPEDA S.p.A.
发明人： MATTEAZZI, Giuliano , ZAMBERLAN, Fiorenzo
IPC分类号： F04D7/04 , F04D13/08 , F04D29/10 , F04D1/06 , F04D29/08
CPC分类号： F04D7/04 , F04D1/063 , F04D13/086 , F04D29/108
摘要： Centrifugal motor pump (1) comprising: a first casing (2) which delimits a pumping chamber (3) and which is provided with an inlet mouth (4), an outlet mouth (5) and a first through opening (6); a motor (7) enclosed in a second casing (8) provided with a second through opening (9) facing the first through opening (6); a third casing (10) delimiting an intermediate chamber (11) interposed between the first through opening (6) and the second through opening (9) and placing them in communication with each other; a rotor (12) arranged in the pumping chamber (3); a shaft (13) arranged through the first through opening (6), the second through opening (9) and the intermediate chamber (11), wherein the shaft connects the rotor (12) to the motor (7) in order to set the former rotating and cause the liquid to flow according to a corresponding direction of flow; a recirculation duct (14) communicating at its first end (15) with the intermediate chamber (11) and at its second end (16) with the inlet mouth (4) in order to convey a liquid present in the intermediate chamber (11) towards the inlet mouth (4).
摘要翻译： 1。一种离心式电机泵（1），包括：限定泵室（3）并设有进口（4），出口（5）和第一通孔（6）的第一壳体（2）; 一个装在第二壳体（8）中的马达（7），该马达设有一个面对第一通孔（6）的第二通孔（9）; 第三壳体（10），其限定介于第一通孔（6）和第二通孔（9）之间的中间腔室（11）并且使它们彼此连通; 布置在泵室（3）中的转子（12）; 通过第一通孔（6），第二通孔（9）和中间腔室（11）布置的轴（13），其中轴将转子（12）连接到马达（7）以便设定前者旋转并使液体根据相应的流动方向流动; （15）与中间室（11）连通并且在其第二端（16）与入口（4）连通以便传送存在于中间室（11）中的液体的再循环管道（14）朝向入口（4）。

3. 发明授权

EP2074330B1 MULTISTAGE PUMP ASSEMBLY 有权
标题翻译：多级泵组件
公开(公告)号：EP2074330B1
公开(公告)日：2018-02-21
申请号：EP07818852.1
申请日：2007-10-09
申请人： Grundfos Management A/S
发明人： TOWSLEY, Greg , HAACK, Ryan , TALLEY, Joshua , AMDISEN, Svend
IPC分类号： F04D1/06 , F04D29/42 , F04D29/62
CPC分类号： F04D29/426 , F04D1/063 , F04D29/4293 , F04D29/605 , F04D29/628 , Y10T29/53
摘要： A modular pump assembly has a volute (16), having a suction chamber (120) and a pressure chamber (122), and a pump stack (14) having at least one stage (86), wherein a modular flange (44) is arranged between the volute (16) and the pump stack (14) and is removably coupled to both the pump stack (14) and the volute (16).

4. 发明公开

EP2653727A4 MULTISTAGE PUMP 失效
标题翻译： MEHRSTUFIGE PUMPE
公开(公告)号：EP2653727A4
公开(公告)日：2017-06-14
申请号：EP11848993
申请日：2011-12-13
申请人： KUBOTA KK
发明人： NAGAOKA KEISUKE , HASHIMOTO YASUSHI , NOGUCHI MAKOTO , NAKANO DAISUKE
IPC分类号： F04D1/08 , F04D29/44
CPC分类号： F04D1/063 , F04D29/426 , F04D29/445 , F05D2250/52
摘要： Provided is a multistage pump in which a fluid raised in pressure by an impeller at a last stage is guided to a discharge opening through a diffuser 21c at the last stage. A discharge flow path 22 for guiding the fluid from the last-stage diffuser 21c to the discharge opening is formed in a pump casing. The discharge flow path 22 is formed in a direction in which the discharge flow path swirls about the shaft center of a rotating shaft. The cross-sectional area of the discharge flow path 22 in a plane including the shaft center of the rotating shaft increases from the upstream side toward the downstream side of a flow toward the discharge opening in a shaft center direction A and an inward radial direction B of the rotating shaft.
摘要翻译：本发明提供一种多级泵，其中通过最后阶段的叶轮升压的流体在末级通过扩散器21c被引导至排放开口。在泵壳体内形成有用于将流体从末级扩散器21c引导至排出口的排出流路22。排出流路22形成在排出流路围绕旋转轴的轴心旋转的方向上。包含旋转轴的轴心的平面内的排出流路22的截面积沿着轴心方向A和径向内方向B从上游侧朝向排出口的下游侧增加的旋转轴。

5. 发明授权

EP2955385B1 MULTI-STAGE HIGH-PRESSURE PUMP 有权
标题翻译：多级高压泵
公开(公告)号：EP2955385B1
公开(公告)日：2016-08-31
申请号：EP15174721.9
申请日：2008-01-21
申请人： Ebara Corporation
发明人： TERAGAKI, Akio
IPC分类号： F04D29/12 , F04D1/08 , F16J15/34 , F04D29/10 , F04D7/06 , F04D1/06
CPC分类号： F16J15/3404 , F04D1/063 , F04D7/06 , F04D29/108

6. 发明公开

EP2955385A1 MULTI-STAGE HIGH-PRESSURE PUMP 有权
标题翻译：多级高压泵
公开(公告)号：EP2955385A1
公开(公告)日：2015-12-16
申请号：EP15174721.9
申请日：2008-01-21
申请人： Ebara Corporation
发明人： TERAGAKI, Akio
IPC分类号： F04D29/12 , F04D1/08 , F16J15/34 , F04D29/10 , F04D7/06 , F04D1/06
CPC分类号： F16J15/3404 , F04D1/063 , F04D7/06 , F04D29/108
摘要： A multistage high-pressure pump according to the present invention includes a rotational shaft (1), impellers (3) secured to the rotational shaft, a casing (2) configured to house the impellers therein, a mechanical seal (20), a seal chamber (25) that houses the mechanical seal therein, an oil reservoir (30) configured to store oil therein, an oil supply line (26) providing fluid communication between the oil reservoir (30) and the seal chamber (25), an oil pump (31) configured to pressurize the oil from the oil reservoir (30) and supply the oil to the seal chamber (25), a pressure retaining mechanism (32, 34, 35) configured to retain pressure of the oil in the seal chamber (25), and an oil outlet line (27) for discharging the oil from the seal chamber (25). The pressure of the oil in the seal chamber (25) is higher than pressure of the fluid.

7. 发明公开

EP2787219A2 Centrifugal pump stage with increased compressive load capacity 审中-公开
标题翻译： Kreiselpumpenstufe miterhöhterDruckbelastungskapazität
公开(公告)号：EP2787219A2
公开(公告)日：2014-10-08
申请号：EP14162928.7
申请日：2014-03-31
申请人： Services Petroliers Schlumberger SA , Schlumberger Holdings Limited , SCHLUMBERGER TECHNOLOGY B.V. , PRAD Research and Development Limited , Schlumberger Technology Corporation
发明人： Morrison, Tony R. , Eslinger, David Milton , Cheah, Kean Wee , Chang, Lye Heng , Ekambaram, Raju , Lakshmanan, Narayanan
IPC分类号： F04D29/54 , F04D29/64
CPC分类号： F04D1/063 , F04D29/445 , F04D29/548 , F04D29/648
摘要： A centrifugal pump stage with increased compressive load capacity is provided. In an implementation, a centrifugal pump stage includes a diffuser (110) with outside wall capable of supporting increased axial forces. A mating surface (114) of the outer wall (116) can support axial forces generated by a stack of subsequent pump stages (110, 112) across the entire thickness (114) of the outer wall. The diffuser can be a two-piece assembly including a load bearing module and a flow diffusing module. The load bearing module (302) may be a cylinder of strong tubular alloy while the flow diffusing module (304) can be separately cast in a manner that improves hydraulic efficiency. Various means for radially positioning the pump stages relieve the load bearing module from the task of aligning additional pump stages. A single rigid tube may also be used as the load bearing module for multiple pump stages. The tube may be made with a thin wall to increase pump volume.
摘要翻译：提供了具有增加的压缩载荷能力的离心泵级。在一个实施方案中，离心泵级包括具有能够支撑增加的轴向力的外壁的扩散器（110）。外壁（116）的配合表面（114）可以支撑穿过外壁的整个厚度（114）由一堆随后的泵级（110,112）产生的轴向力。扩散器可以是包括承载模块和流动扩散模块的两件式组件。负载模块（302）可以是强管状合金的气缸，而流动扩散模块（304）可以以提高液压效率的方式分开铸造。用于径向定位泵级的各种装置可以减轻承载模块的任务，使其对齐附加的泵级。单个刚性管也可用作多个泵级的承载模块。管可以用薄壁制成以增加泵的体积。

8. 发明公开

EP2745017A1 BEARING ASSEMBLY FOR A VERTICAL TURBINE PUMP 有权
标题翻译：轴承安排一个立式泵
公开(公告)号：EP2745017A1
公开(公告)日：2014-06-25
申请号：EP12824366.4
申请日：2012-08-16
申请人： Weir Floway Inc.
发明人： BOLDT, Daniel, E.
IPC分类号： F04D29/04
CPC分类号： F01D25/166 , F01D25/186 , F04D1/063 , F04D29/047
摘要： A bearing assembly for supporting a drive shaft of a pump is structured with a cylindrical body having an internal cavity filled with a lubricant, a sealing element arrangement positioned at one or both ends of the cylindrical body and a pressure equalization element that functions to equalize the pressure differential that exists between an area within the cylindrical body and outside of the cylindrical body to improve the operating life of the sealing arrangement and the bearing assembly.

9. 发明授权

EP1509700B1 MULTISTAGE PUMP, PARTICULARLY OF THE IMMERSION TYPE 有权
标题翻译：多级潜水电泵
公开(公告)号：EP1509700B1
公开(公告)日：2011-04-20
申请号：EP03727746.4
申请日：2003-05-14
申请人： Vertical S.p.A.
发明人： FORNASA, Riccardo
IPC分类号： F04D1/06 , F04D29/42 , F04D29/62
CPC分类号： F04D29/628 , F04D1/063 , F04D13/10 , F04D29/044 , F04D29/426 , F04D29/4293
摘要： A multistage pump, particularly of the immersion type, comprises an outer tubular jacket (2) defining a longitudinal axis (L), a plurality of adjacent stages (3) which are arranged hydraulically in series and inserted slidably inside the tubular jacket (2), and a main shaft (4) which is coaxial with the longitudinal axis (L). Each stage has at least one impeller (5) coupled to the main shaft (4) and a diffusion duct (6), means for connecting an electric motor (24), an intake element (7) and a delivery element (8) mounted respectively upstream and downstream of the stages (3) so as to lock them axially. The intake element (7) and delivery element (8) are secured removably to the jacket (2) close to its longitudinal ends by means of substantially transverse connecting members (9) which may be accessed from the outside of the jacket (2). The delivery element (8) comprises a hollow tubular portion (14) which houses inside it a non-return valve (15) inserted slidably so that it may be extracted axially outwards.

10. 发明公开

EP2242928A1 BEFESTIGUNG DES LAUFRADES EINER KREISELPUMPE 有权转让
标题翻译：离心泵的叶轮拟合
公开(公告)号：EP2242928A1
公开(公告)日：2010-10-27
申请号：EP09701807.1
申请日：2009-01-19
申请人： WILO AG
发明人： COSTAOUEC, Laurent
IPC分类号： F04D1/06 , F04D29/22 , F04D29/20
CPC分类号： F04D29/2222 , F04D1/063 , F04D29/20 , F04D29/2227 , F05D2230/232
摘要： The invention relates to a rotor, which is produced from sheet metal, of an in particular multi-stage centrifugal pump, having means for fastening to the drive shaft of an electric motor, wherein the rotor has a central coaxial opening in which a sleeve is fastened coaxially, wherein the sleeve projects out of the rotor at at least one side of the rotor, and wherein the sleeve has, in its inner wall, projecting, axially parallel beads for fastening in axially parallel notches or grooves of the motor drive shaft.

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