公开(公告)号：US11846297B2

公开(公告)日：2023-12-19

申请号：US17209350

申请日：2021-03-23

Applicant: Sulzer Management AG

Inventor： Karel De Raeve ,  Simon Gassmann ,  Thomas Welschinger ,  Benedikt Trottmann

IPC: F04D29/06 ,  F04D1/08 ,  F04D29/041 ,  F04D13/08 ,  F04D29/047 ,  F04D29/58 ,  E21B43/12

CPC classification number: F04D29/061 ,  E21B43/128 ,  F04D1/08 ,  F04D13/086 ,  F04D29/047 ,  F04D29/0413 ,  F04D29/0416 ,  F04D29/0473 ,  F04D29/5886

Abstract: A process fluid lubricated pump includes a pump having a pump shaft extending from a drive end to a non-drive end, first and last stage impellers, a drive unit exerting torque on the drive end to rotate the pump shaft, a balance drum connected to the pump shaft between the pump and the drive end, the balance drum defining a drum front side facing the pump and a drum back side, a relief passage between the balance drum and a first stationary part configured to be stationary with respect to a housing, the relief passage extending from the drum front side to the drum back side, the pump shaft radially supported in a non-contacting manner during operation of the pump, and a hydrodynamic radial pump bearing supporting the pump shaft, the radial pump bearing arranged at the non-drive end or at the drive end of the pump shaft.

公开(公告)号：US12025156B1

公开(公告)日：2024-07-02

申请号：US18607255

申请日：2024-03-15

Applicant: Taizhou Vocational College of Science & Technology ,  Wenling Fluid Machinery Technology Institute of Jiangsu University

Inventor： Chao Wang ,  Zhenhua Shen ,  Jianqiang Ma ,  Jinfeng Zhang ,  Yin Luo ,  Guidong Li

IPC: F04D29/66 ,  A01C23/04 ,  A01G25/02 ,  F04D1/00 ,  F04D13/06 ,  F04D13/14 ,  F04D15/00 ,  F04D29/049 ,  F04D29/40 ,  F04D29/42 ,  F04D29/44 ,  F04D29/46 ,  F04D29/48 ,  F04D29/58

CPC classification number: F04D29/669 ,  F04D1/00 ,  F04D13/06 ,  F04D13/0606 ,  F04D13/0646 ,  F04D29/049 ,  F04D29/406 ,  F04D29/426 ,  F04D29/4293 ,  F04D29/445 ,  F04D29/466 ,  F04D29/486 ,  F04D29/66 ,  A01C23/04 ,  A01G25/02 ,  F04D13/14 ,  F04D15/0005 ,  F04D29/5886

Abstract: The invention discloses a water feeding pump or a fertilizer applying pump for a pump station of a fertilization and irrigation system. The water feeding pump (2) or the fertilizer applying pump (3) is a centrifugal pump. The centrifugal pump includes a volute and an impeller. The impeller includes a front disc (12), a rear disc (13), and main blades (14), and a plurality of back blades (18) distributed along a circumferential direction are disposed on a back surface of the rear disc, where an auxiliary rotating disc (11) is disposed between the impeller and a rear side wall of the volute, the auxiliary rotating disc is a rotating member and is driven by the back blades of the impeller to rotate.

公开(公告)号：US20230151816A1

公开(公告)日：2023-05-18

申请号：US17529065

申请日：2021-11-17

Applicant: Halliburton Energy Services, Inc.

Inventor： Yuzhu HU ,  Dezhi ZHENG ,  Yu Dong SUN ,  Donn J. BROWN

IPC: F04D13/08 ,  F04D13/10 ,  F04D29/58

CPC classification number: F04D13/086 ,  F04D13/10 ,  F04D29/5806 ,  F04D29/5886

Abstract: An electric submersible pump (ESP) assembly. The ESP assembly comprises a centrifugal pump assembly; a seal section; and an electric motor comprising a drive shaft having a bore concentric with a longitudinal axis of the drive shaft and a fluid mover disposed within and coupled to the bore of the drive shaft.

公开(公告)号：US11821430B2

公开(公告)日：2023-11-21

申请号：US17529065

申请日：2021-11-17

Applicant: Halliburton Energy Services, Inc.

Inventor： Yuzhu Hu ,  Dezhi Zheng ,  Yu Dong Sun ,  Donn J. Brown

IPC: F04D13/08 ,  F04D29/58 ,  F04D13/10

CPC classification number: F04D13/086 ,  F04D13/10 ,  F04D29/5806 ,  F04D29/5886

Abstract: An electric submersible pump (ESP) assembly comprises a centrifugal pump assembly, a seal section and an electric motor comprising a drive shaft having a bore concentric with a longitudinal axis of the drive shaft. A fluid mover disposed within and coupled to the bore of the drive shaft is configured for urging lubricating oil upward in the bore. The fluid mover includes at least one helical flighting open in the middle. The electric motor may also have a bearing coupled to the drive shaft and a bushing that is retained by a housing or by stator structure of the electric motor. The bushing defining at least one fluid flow channel extending from an upper edge of the bushing to a lower edge of the bushing and a middle portion of the fluid flow channel open to the inside surface of the bushing.

公开(公告)号：US20140356127A1

公开(公告)日：2014-12-04

申请号：US14365704

申请日：2012-11-28

Applicant: Sulzer Pumpen AG

Inventor： Johann Guelich

IPC: F04D7/04 ,  F04D27/00

CPC classification number: F04D7/045 ,  F04D7/04 ,  F04D15/0027 ,  F04D27/006 ,  F04D29/167 ,  F04D29/588 ,  F04D29/5886 ,  F04D29/688 ,  F05D2210/20 ,  F05D2260/20

Abstract: A pump (1) for pumping highly viscous fluids is presented that includes a casing (3), an inlet (7), an outlet (8) and a closed impeller (5) rotatably arranged in the casing between the inlet and the outlet and that has a side room (6) between a shroud (4) of the impeller and the casing (3). In addition, the pump (1) includes a sealing element (7a, 7b, 8a, 8b) between the impeller (5) and the casing (3) each at an inlet side and at an outlet side of the impeller for restricting back flow through the side room (6) and for allowing the fluid contained in the side room to heat up, and an injection port (9) leading into the side room (6) for injecting a fluid into the side room for diminishing disk friction between the shroud (4) of the impeller and the casing (3).

Abstract translation: 提出了一种用于泵送高粘度流体的泵（1），其包括壳体（3），入口（7），出口（8）和可旋转地布置在入口和出口之间的壳体中的封闭叶轮（5） 在叶轮的护罩（4）和壳体（3）之间具有侧室（6）。 此外，泵（1）在叶轮（5）和壳体（3）之间包括在叶轮的入口侧和出口侧的密封元件（7a，7b，8a，8b），用于限制回流 通过侧室（6）并且允许容纳在侧室中的流体加热，以及通向侧室（6）的注入口（9），用于将流体注入侧室，以减少侧室中的盘摩擦 叶轮的罩（4）和壳体（3）。

公开(公告)号：US11691708B2

公开(公告)日：2023-07-04

申请号：US17825451

申请日：2022-05-26

Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor： Wataru Yamada ,  Hideyuki Kudo ,  Shinichi Isobe ,  Shigeki Senoo

IPC: B63H23/24 ,  B63H1/16 ,  F04D13/08 ,  F04D29/58 ,  B63H23/00 ,  B63H5/10 ,  F04D3/00 ,  B63H11/107 ,  B63H11/08 ,  B63H11/10

CPC classification number: B63H23/24 ,  B63H1/16 ,  F04D13/086 ,  F04D29/5806 ,  F04D29/588 ,  F04D29/5886 ,  B63H5/10 ,  B63H11/08 ,  B63H11/101 ,  B63H11/107 ,  B63H2001/165 ,  B63H2005/106 ,  B63H2023/005 ,  F04D3/00

Abstract: A fluid machine includes: a shaft portion; a shroud surrounding the shaft portion and including an inside surface that forms a flow path-forming surface defining a flow path with the shaft portion; a first propeller rotatably provided in the flow path; a second propeller rotatably provided on a downstream side of the first propeller in the flow path; and a motor including a rotor that is fixed to an outer circumferential portion of the second propeller and that is accommodated in the shroud, and a stator that surrounds the rotor via a clearance and that is fixed in the shroud. A portion of the flow path-forming surface on a downstream side of the second propeller decreases in diameter toward the downstream side, and the shroud includes an inlet flow path that is open at a portion between the first propeller and the second propeller of the flow path-forming surface.

公开(公告)号：US3976391A

公开(公告)日：1976-08-24

申请号：US573160

申请日：1975-04-30

Applicant: Forrest Thomson Randell

Inventor： Forrest Thomson Randell

IPC: F04D15/00 ,  F04D29/08 ,  F04D29/10 ,  F04D29/24 ,  F04D29/42 ,  F04D29/58 ,  F04D29/66 ,  F04D5/00

CPC classification number: F04D29/669 ,  F04D29/086 ,  F04D29/108 ,  F04D29/426 ,  F04D29/4273 ,  F04D29/5886 ,  F05B2260/603

Abstract: A centrifugal fluid pump includes a casing housing an impeller having a suction eye, an axial fluid inlet to the impeller eye, a fluid discharge, and a recirculation line for recycling leakage liquid from the casing to the fluid inlet to minimise the risk of cavitation occurring at the impeller eye. A heat exchanger is located in the recirculation line for cooling the recycled leakage liquid and has control means associated therewith. The recycled liquid is introduced by a duct into the fluid inlet close to the impeller eye with an axial component of flow so that disturbance to flow in the inlet is reduced. In particular, the recirculation line may discharge into an annular velocity stabilising chamber at the fluid inlet, and a frusto-conical passage delivers the liquid from the chamber to the fluid inlet.

Abstract translation: 离心流体泵包括壳体，其容纳具有吸眼的叶轮，到叶轮眼的轴向流体入口，流体排放物和用于将泄漏液体从壳体再循环到流体入口的再循环管线，以最小化发生气蚀的风险 在叶轮眼睛。 热交换器位于再循环管线中，用于冷却再循环的泄漏液体并具有与之相关联的控制装置。 再循环的液体通过管道被引入靠近叶轮眼睛的流体入口中，具有流动的轴向分量，从而降低入口中的流动扰动。 特别地，再循环管线可以排放到流体入口处的环形速度稳定室中，并且截头圆锥形通道将液体从腔室输送到流体入口。

公开(公告)号：US3744935A

公开(公告)日：1973-07-10

申请号：US3744935D

申请日：1971-10-07

Applicant: CRANE CO

Inventor： MAGNI R

IPC: F04D29/58 ,  F04B39/02 ,  F04B39/06

CPC classification number: F04D29/5886 ,  Y10S417/901

Abstract: Cooling systems for motor driven pumps and the like are disclosed which include the use of a sub cooler applied to motor driven pumps and the like that impel low boiling fluids and include provisions for bleeding a small portion of the pumped fluid, flashing the fluid for cooling, using the vapor to cool the pumped fluid and/or circulating the vapor around the pump to cool the bearing and other critical areas susceptible to excessive heating.

Abstract translation: 公开了用于马达驱动泵等的冷却系统，其包括使用施加到驱动低沸点流体的马达驱动泵等的副冷却器，并且包括用于排出少量的泵送流体的闪蒸，使流体闪烁以冷却 ，使用蒸汽来冷却泵送的流体和/或使蒸汽循环在泵周围，以冷却轴承和其他易受过度加热的关键区域。