US20190242401A1 - Single-stage centrifugal pumping unit - Google Patents

Single-stage centrifugal pumping unit Download PDF

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Publication number
US20190242401A1
US20190242401A1 US16/317,562 US201716317562A US2019242401A1 US 20190242401 A1 US20190242401 A1 US 20190242401A1 US 201716317562 A US201716317562 A US 201716317562A US 2019242401 A1 US2019242401 A1 US 2019242401A1
Authority
US
United States
Prior art keywords
volute
pump
impeller
housing
replaceable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/317,562
Other languages
English (en)
Inventor
Vladimir Ivanovich Kushnarev
Ivan Vladimirovich KUSHNAREV
Yury Sergeevich OBOZNY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Neftekamsk Machinery Plant (llc Nkmz) LLC
Original Assignee
Neftekamsk Machinery Plant (llc Nkmz) LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Neftekamsk Machinery Plant (llc Nkmz) LLC filed Critical Neftekamsk Machinery Plant (llc Nkmz) LLC
Assigned to LIMITED LIABILITY COMPANY NEFTEKAMSK MACHINERY PLANT (LLC NKMZ) reassignment LIMITED LIABILITY COMPANY NEFTEKAMSK MACHINERY PLANT (LLC NKMZ) ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KUSHNAREV, Ivan Vladimirovich, KUSHNAREV, Vladimir Ivanovich, OBOZNY, Yury Sergeevich
Publication of US20190242401A1 publication Critical patent/US20190242401A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/006—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps double suction pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/61—Assembly methods using limited numbers of standard modules which can be adapted by machining

Definitions

  • the invention relates to mechanical engineering, namely to pumping installations designed for pumping water, water solutions, as well as oil, oil products and the like through the main, process and auxiliary pipelines.
  • centrifugal oil pumps for main pipelines have been known centrifugal horizontal single-stage HM type pumps designed for pumping oil through main pipelines comprising a housing with a volute, and a double entry impeller disposed in the housing.
  • Using the volute therein is directed to reducing radial forces acting on a rotor, and thus reducing vibration and improving pump reliability.
  • pressure pulsations, pump vibration are increased, which leads to substantial reduction in its efficiency and reliability.
  • Patent RU 57393 U1 discloses a centrifugal pump with a double entry impeller comprising a volute formed by cavities in a cover and a housing, and a replaceable guide apparatus, for which four embodiments are provided. It is noted that use of the guide apparatus in a replaceable unit with the double entry impeller provides maximum efficiency within 0.3 Q nom -1.25 Q nom feed range while ensuring the requisite pressure, minimum radial forces and vibrations, since the predetermined parameters calculated for this unit provide optimum flow section.
  • inlet and outlet described in each embodiment are designed for maximum feed, the inflow setting of each impeller correspond to the outflow setting, and the outflow setting of each guide apparatus correspond to setting of the same volute, which is provided in the form of cavities in the cover and the housing.
  • the present invention has an object of providing a single-stage centrifugal pumping unit which demonstrates peak efficiency in non-nominal modes while having a simplified design and being universal in nature.
  • a single-stage centrifugal pumping unit comprises a centrifugal single-stage double entry pump, an electric drive motor, a coupling, connecting their shafts, a support frame for mounting the pump housing and the electric motor thereon, a housing, which consists of a base and a cover, inlet and outlet manifolds, a rotor with an impeller, the rotor being installed in support bearings, and a volute.
  • the volute is configured in the form of a separate, independent component, and parts of the outside surface thereof, which are intended to be accommodated in cradles provided for this purpose in the cover and the housing, correspond to the shape of the surfaces of said cradles, the impeller and the volute are replaceable as a pair, the parameters of the impeller and the volute in each pair are calculated to provide maximum efficiency (peak efficiency) while ensuring the requisite feed and pressure.
  • the replaceable volutes are made as an integrated cast component and comprise a baffle separating the fluid flow during the movement.
  • FIG. 1 is a general view illustrating a single-stage centrifugal pumping unit
  • FIG. 2 is a vertical plane cross-sectional view of the pump along the pipeline axis
  • FIG. 3 is a vertical plane cross-sectional view illustrating schematic arrangement of a cover, a replaceable flow part and a pump housing along the pipeline axis;
  • FIG. 4 illustrates embodiments of replaceable volutes with constant outer connecting profile and various internal hydrodynamic profile designed for optimal operation and maximum efficiency.
  • a single-stage centrifugal pumping unit comprises an electric drive motor 2 , a centrifugal single-stage double entry pump 1 (hereinafter, the pump), a coupling 3 , connecting their shafts, a pump housing 17 , which consists of a base 6 and a cover 7 , an inlet manifold 8 and an outlet manifold 9 , a rotor 10 with an impeller 11 , the rotor being installed in support bearings 12 , a volute 13 , and a support frame 5 for mounting the pump housing 17 and the electric motor 2 thereon.
  • the pump centrifugal single-stage double entry pump 1
  • the volute 13 is configured in the form of a separate, independent component, and parts of the outside surface thereof, which are intended to be accommodated in cradles 14 and 15 provided for this purpose in the housing 6 and the cover 7 , correspond to the shape of the surfaces of said cradles 14 and 15 .
  • the impeller 11 and the volute 13 are replaceable as a pair, the parameters of the impeller 11 and the volute 13 in each pair are calculated to provide maximum efficiency while ensuring the requisite feed and pressure.
  • the replaceable volutes 13 are made casted, and they may comprise a baffle 15 for separation of the fluid flow during the movement.
  • the pump works in the same way as other known centrifugal single-stage double entry pumps.
  • pump medium through the inlet manifold 8 is supplied to the impeller 11 , interaction of blades of which with the flow of the pumped medium causes conversion of the drive energy to the energy of flow.
  • the pumped medium enters the volute, where the flow is smoothed out, and further through the outlet manifold it passes to the pipeline.
  • a pump being a base member is a complicated casting of carbon steel, or stainless steel, actually consisting of a housing and a cover. Therefore, in the event of change of the pump operating conditions (reducing pressure on already existing line, or changing the flow through the already existing line) it is not necessary to use the already operating pump in ineffective way, or dismantle it and install a new one designed for new conditions. Just install a new pair of impeller and volute designed for new operating environment in already existing housing, and you will get a pump with new relative calculated characteristics. Thus, there is a significant saving of money due to no need to dismantle the old pump and manufacture a new pump in a new housing. Of particular importance is solution of providing a pump with new characteristics on the basis of the old one, as there is no need to dismantle the pipeline, on which the old pump has been installed and operated.
  • impellers in a pump in optimal mode will extend the service life of the pump itself, as impellers are rapidly wearing parts and can be manufactured from costly high wear resistant materials, such as steel 20X13, 12X18H12MZTL or similar steel and materials.
  • the pump housing is horizontally split, which provides for possibility to dissect, inspect, repair, and replace the parts of the pump and the entire rotor without dismantling the pipes, since the pump inlet and suction manifolds are connected to the bottom of the pump housing.
  • the present invention in proposed combination of features can be used to provide a single-stage centrifugal pumping unit which demonstrates peak efficiency in non-nominal modes while having a simplified design, and being universal in nature, durable and easy to operate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US16/317,562 2016-07-13 2017-07-07 Single-stage centrifugal pumping unit Abandoned US20190242401A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2016128485A RU2616328C1 (ru) 2016-07-13 2016-07-13 Одноступенчатый центробежный насосный агрегат
RU2016128485 2016-07-13
PCT/RU2017/000500 WO2018013010A1 (fr) 2016-07-13 2017-07-07 Équipement de pompe centrifuge à étage unique

Publications (1)

Publication Number Publication Date
US20190242401A1 true US20190242401A1 (en) 2019-08-08

Family

ID=58643010

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/317,562 Abandoned US20190242401A1 (en) 2016-07-13 2017-07-07 Single-stage centrifugal pumping unit

Country Status (12)

Country Link
US (1) US20190242401A1 (fr)
EP (1) EP3486500A4 (fr)
JP (1) JP6810240B2 (fr)
AU (2) AU2017295552A1 (fr)
BR (1) BR112019000595A2 (fr)
CA (1) CA3036362A1 (fr)
CL (1) CL2019000088A1 (fr)
EA (1) EA035529B1 (fr)
MX (1) MX2019000518A (fr)
NZ (1) NZ750655A (fr)
RU (1) RU2616328C1 (fr)
WO (1) WO2018013010A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU206998U1 (ru) * 2021-03-09 2021-10-06 Акционерное общество (АО) "Турбонасос" Корпус центробежного насоса

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU175617U1 (ru) * 2017-05-03 2017-12-12 Акционерное общество (АО) "Научно-исследовательский институт "Лопастных машин" ("НИИ ЛМ") Корпус насоса с разъемом в плоскости параллельной оси ротора
RU2672239C1 (ru) * 2017-09-01 2018-11-12 Акционерное общество "ГМС Ливгидромаш" Центробежный одноступенчатый насос
RU185455U1 (ru) * 2018-06-14 2018-12-05 Публичное акционерное общество "Транснефть" (ПАО "Транснефть") Насос нефтяной магистральный с однозавитковым отводом и направляющим аппаратом
RU195473U9 (ru) * 2018-08-17 2020-03-20 Общество с ограниченной ответственностью "Нефтекамский машиностроительный завод" (ООО "НКМЗ") Вертикальный центробежный электронасосный агрегат со сменными проточными частями
RU2713309C1 (ru) * 2019-03-27 2020-02-04 Общество С Ограниченной Ответственностью "Нефтекамский Машиностроительный Завод" Вертикальный одноступенчатый центробежный насос
RU193781U1 (ru) * 2019-04-02 2019-11-14 Публичное акционерное общество "Транснефть" (ПАО "Транснефть") Одноступенчатый центробежный насос двухстороннего входа

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786230A (en) * 1984-03-28 1988-11-22 Thut Bruno H Dual volute molten metal pump and selective outlet discriminating means

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US2955540A (en) * 1957-05-27 1960-10-11 Worthington Corp Twin volute pump
US8579603B2 (en) * 2004-07-13 2013-11-12 Energy Recovery, Inc. Centrifugal pump
GB0419984D0 (en) * 2004-09-09 2004-10-13 Weir Pumps Ltd Pump assembly
RU57393U1 (ru) * 2006-04-17 2006-10-10 Открытое акционерное общество "Научно-исследовательский и проектно-конструкторский институт атомного и энергетического насосостроения" (ОАО "ВНИИАЭН") Центробежный насос с рабочим колесом двустороннего входа
EP2607703B1 (fr) * 2011-12-22 2014-06-18 Grundfos Holding A/S Pompe centrifuge
CN102808773B (zh) * 2012-08-22 2015-03-25 合肥工业大学 一种可更换组合内衬的泵
CN203978852U (zh) * 2014-05-28 2014-12-03 姜堰市德华船用泵业制造有限公司 可换蜗壳式船用自吸离心泵

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786230A (en) * 1984-03-28 1988-11-22 Thut Bruno H Dual volute molten metal pump and selective outlet discriminating means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU206998U1 (ru) * 2021-03-09 2021-10-06 Акционерное общество (АО) "Турбонасос" Корпус центробежного насоса

Also Published As

Publication number Publication date
BR112019000595A2 (pt) 2019-04-24
EA035529B1 (ru) 2020-06-30
CA3036362A1 (fr) 2018-01-18
AU2020273342A1 (en) 2020-12-17
EP3486500A4 (fr) 2020-03-11
CL2019000088A1 (es) 2019-08-30
AU2017295552A1 (en) 2019-03-07
MX2019000518A (es) 2019-08-16
JP6810240B2 (ja) 2021-01-06
JP2019521282A (ja) 2019-07-25
RU2616328C1 (ru) 2017-04-14
NZ750655A (en) 2020-06-26
WO2018013010A1 (fr) 2018-01-18
EA201900061A1 (ru) 2019-06-28
EP3486500A1 (fr) 2019-05-22

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