US20130058777A1 - Submersible pump stage - Google Patents

Submersible pump stage Download PDF

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Publication number
US20130058777A1
US20130058777A1 US13/519,566 US201013519566A US2013058777A1 US 20130058777 A1 US20130058777 A1 US 20130058777A1 US 201013519566 A US201013519566 A US 201013519566A US 2013058777 A1 US2013058777 A1 US 2013058777A1
Authority
US
United States
Prior art keywords
stage
top disc
holes
diffuser
rear top
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
US13/519,566
Other languages
English (en)
Inventor
Evgeny Mikhaylovich Sviridov
Anton Sergeevich Lyaskin
Andrey Vladimirovich Shishov
Jacques Orban
Aleksander Petrovich Skibin
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.)
Schlumberger Technology Corp
Original Assignee
Schlumberger Technology Corp
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 Schlumberger Technology Corp filed Critical Schlumberger Technology Corp
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION reassignment SCHLUMBERGER TECHNOLOGY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ORBAN, JACQUES, SVIRIDOV, EVGENY MIKHAYLOVICH, LYASKIN, ANTON SERGEEVICH, SHISHOV, ANDREY VLADIMIROVICH, SKIBIN, ALEKSANDER PETROVICH
Publication of US20130058777A1 publication Critical patent/US20130058777A1/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
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F04D1/063—Multi-stage pumps of the vertically split casing type
    • 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
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/688—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for liquid pumps

Definitions

  • the invention is related to the area of the stages of submersible centrifugal pumps used for pumping liquid media including those containing oil, it may be used for liquid natural deposits' production, including, hydrocarbons from oil wells.
  • Patent RU 68613 A stage of a centrifugal pump is described in Patent RU 68613.
  • This stage contains an impeller including front and rear top discs, blades located between the front and rear top discs, a bushing and a diffuser including front and rear top discs, and blades located between the front and rear top discs.
  • a disadvantage of this apparatus is that, as solid particles are accumulated in a front pocket, the solid particles begin to significantly increase the friction between the rotating parts of the submersible pump, which may result in the motor damage and results in a very significant impeller top disc wear.
  • Stages of a centrifugal or diagonal submersible pump necessarily have negative design peculiarities such as cavities between an impeller front and rear top discs and surfaces of a diffuser which were named front and rear pockets.
  • stage rotating parts impeller
  • fixed diffuser
  • overflows inside the stage When a pure liquid is pumped through the pump stage the impact of these cavities is not significant, but if a liquid containing solids (like sand or proppant) is supplied to the stage inlet, these cavities begin working as traps for solid particles which penetrate the pockets via gaps between the impeller and the diffuser.
  • the suggested invention provides for continuous forced flushing of the front pocket to prevent solid particles' accumulation therein which significantly reduces the abrasive wear of the impeller top disc and substantially extends the motor service life.
  • a stage of a submersible pump stage comprises an impeller including a first front disc and a first rear top disc, first blades, located between the first front and the first rear top discs, a bushing and a diffuser including a second front disc and a second rear top disc, second blades, located between the second front and rear top discs.
  • the second rear top disc of the diffuser has through holes passing in end surfaces and located circumferentially. A number of the through holes is selected at least equal to a number of interblade channels and the through holes are made so as to provide an overflow of a liquid from a front pocket of the stage into each interblade channel of a diffuser of a preceding stage.
  • the number of the through holes can be selected divisible by the number of the interblade channels.
  • a diameter of each through hole is selected within the range from 1 to 10 mm.
  • the diameter of each through hole is selected within the range from 2 to 4 mm.
  • FIG. 1 shows the view of a submersible pump stage
  • FIG. 2 a view of a diffuser of the submersible pump stage.
  • a submersible pump stage comprises an impeller 1 and a diffuser 2 .
  • the impeller 1 consists of a first front top disc 3 and a first rear top disc 4 , first blades 5 , and a bushing 6 .
  • the diffuser 2 similarly consists of a second front top disc 7 and a second top rear disc 8 , second blades 9 and a bushing 10 .
  • FIG. 1 also shows the location of “abrasive” holes 11 made in an end surface of the second rear top disc 8 of the diffuser 2 and connecting a cavity defined between a surface of the first front top disc 3 of the diffuser 2 of this stage and a surface of a third rear top disc of a diffuser of a preceding stage.
  • the design and location of the “abrasive” holes in the diffuser are shown in FIG. 2 .
  • One of the options to implement the front pocket flushing is making dedicated “abrasive” holes connecting the front pocket of the submersible pump stage with the diffuser preceding stage of the submersible pump.
  • re-circulating liquid motion occurs in the front pocket which prevents accumulation of solid particles, and the liquid motion via the “abrasive” holes carries away the solid particles from the pocket cavity into the diffuser of the preceding stage, from where the solid particles are routed again to the pump stage inlet.
  • Pumping of the liquid through the “abrasive” holes happens due to a pressure drop between the front pocket of this stage and the diffuser of the preceding stage.
  • the pressure drop value at the “abrasive” holes is nearly equal to a submersible stage head.
  • the “abrasive” holes are used to reduce abrasive wear of the submersible pump stage because they arrange continuous liquid circulation via the stage front pocket and thus prevent the accumulation of solid particles therein.
  • holes 11 are drilled through the end surface of the second rear top disc 8 in such a way that a constant liquid overflow from the front pocket into each interblade channel of the diffuser is provided.
  • the diameter of the holes is selected within the range from 1 to 10 mm, preferable—from 2 to 4 mm, depending on a diameter of the solid particles entering the pump, the size of a top radial gap between the impeller and a casing of the stage and a stage head.
  • the location and number of the holes in the diffuser channel may be varied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US13/519,566 2009-12-30 2010-12-30 Submersible pump stage Abandoned US20130058777A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2009149028/06A RU2422679C1 (ru) 2009-12-30 2009-12-30 Ступень погружного насоса
RU2009149028 2009-12-30
PCT/RU2010/000805 WO2011081575A1 (ru) 2009-12-30 2010-12-30 Ступень погружного насоса

Publications (1)

Publication Number Publication Date
US20130058777A1 true US20130058777A1 (en) 2013-03-07

Family

ID=44226695

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/519,566 Abandoned US20130058777A1 (en) 2009-12-30 2010-12-30 Submersible pump stage

Country Status (4)

Country Link
US (1) US20130058777A1 (zh)
CN (1) CN102713302B (zh)
RU (1) RU2422679C1 (zh)
WO (1) WO2011081575A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2754049C1 (ru) * 2020-12-12 2021-08-25 Игорь Олегович Стасюк Ступень лопастного многоступенчатого насоса
RU206628U1 (ru) * 2021-03-06 2021-09-17 Игорь Олегович Стасюк Ступень лопастного многоступенчатого насоса диагонально-овального типа
USD1026457S1 (en) * 2021-02-04 2024-05-14 Aerotest Limited Cover for turbofan engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2670831C9 (ru) * 2015-09-25 2018-11-29 Анна Михайловна Стареева Вихревая форсунка кочетова
RU2735978C1 (ru) * 2020-06-24 2020-11-11 Игорь Олегович Стасюк Ступень многоступенчатого лопастного насоса

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1642914A (en) * 1926-07-03 1927-09-20 Layne & Bowler Corp Sandproof bearing
US3874812A (en) * 1971-08-21 1975-04-01 Klein Schanzlin & Becker Ag Axial pressure balancing arrangement for a multistage centrifugal pump
US8801360B2 (en) * 2009-09-09 2014-08-12 Baker Hughes Incorporated Centrifugal pump with thrust balance holes in diffuser

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB929790A (en) * 1960-07-05 1963-06-26 Tait Mfg Co Improvements in or relating to centrifugal pumps
DE3539883A1 (de) * 1985-09-18 1987-03-26 Hermetic Pumpen Gmbh Selbstansaugende kreiselpumpe
GB2236696B (en) * 1989-09-20 1993-04-14 Central Electr Generat Board A liquid separator
JPH11107987A (ja) * 1997-10-02 1999-04-20 Mitsubishi Heavy Ind Ltd ポンプ
JP2000230493A (ja) * 1999-02-08 2000-08-22 Mitsubishi Heavy Ind Ltd ポンプ
SE0302752L (sv) * 2003-10-20 2005-02-15 Itt Mfg Enterprises Inc Centrifugalpump
CN2787890Y (zh) * 2005-05-09 2006-06-14 杨双来 离心泥沙泵
RU2303167C1 (ru) * 2005-12-09 2007-07-20 Закрытое Акционерное Общество "Новомет-Пермь" Ступень погружного центробежного насоса для добычи нефти
FR2914028B1 (fr) * 2007-03-20 2012-09-21 Alstom Power Hydraulique Machine hydraulique et procede de prevention de l'usure d'une telle machine
RU68613U1 (ru) * 2007-04-20 2007-11-27 Schlumberger Technology B.V. Рабочее колесо ступени погружного насоса, направляющий аппарат ступени погружного насоса и ступень погружного насоса
RU74674U1 (ru) * 2008-01-17 2008-07-10 "Центр Разработки Нефтедобывающего Оборудования (Црно)" Погружной скважинный многоступенчатый центробежный насос и рабочее колесо насоса

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1642914A (en) * 1926-07-03 1927-09-20 Layne & Bowler Corp Sandproof bearing
US3874812A (en) * 1971-08-21 1975-04-01 Klein Schanzlin & Becker Ag Axial pressure balancing arrangement for a multistage centrifugal pump
US8801360B2 (en) * 2009-09-09 2014-08-12 Baker Hughes Incorporated Centrifugal pump with thrust balance holes in diffuser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2754049C1 (ru) * 2020-12-12 2021-08-25 Игорь Олегович Стасюк Ступень лопастного многоступенчатого насоса
USD1026457S1 (en) * 2021-02-04 2024-05-14 Aerotest Limited Cover for turbofan engine
RU206628U1 (ru) * 2021-03-06 2021-09-17 Игорь Олегович Стасюк Ступень лопастного многоступенчатого насоса диагонально-овального типа

Also Published As

Publication number Publication date
RU2422679C1 (ru) 2011-06-27
CN102713302B (zh) 2015-11-25
CN102713302A (zh) 2012-10-03
WO2011081575A1 (ru) 2011-07-07

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AS Assignment

Owner name: SCHLUMBERGER TECHNOLOGY CORPORATION, TEXAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SVIRIDOV, EVGENY MIKHAYLOVICH;LYASKIN, ANTON SERGEEVICH;SHISHOV, ANDREY VLADIMIROVICH;AND OTHERS;SIGNING DATES FROM 20121001 TO 20121114;REEL/FRAME:029742/0965

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION