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FR2414645A1 - Multistage rotary pump with injectors - connects rotary stage outlet to injector pump on another stage inlet - Google Patents

Multistage rotary pump with injectors - connects rotary stage outlet to injector pump on another stage inlet

Info

Publication number
FR2414645A1
FR2414645A1 FR7900849A FR7900849A FR2414645A1 FR 2414645 A1 FR2414645 A1 FR 2414645A1 FR 7900849 A FR7900849 A FR 7900849A FR 7900849 A FR7900849 A FR 7900849A FR 2414645 A1 FR2414645 A1 FR 2414645A1
Authority
FR
France
Prior art keywords
pump
stage
injector
rotary
outlet
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.)
Pending
Application number
FR7900849A
Other languages
French (fr)
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.)
Dunlop Ltd
Original Assignee
Dunlop Ltd
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 Dunlop Ltd filed Critical Dunlop Ltd
Publication of FR2414645A1 publication Critical patent/FR2414645A1/en
Pending legal-status Critical Current

Links

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
    • F04D1/06—Multi-stage 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
    • F04D13/12—Combinations of two or more 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
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/06—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The multistage rotary pump incorporates injector stages for ensuring high pressure difference across pump. The inlet of a stage (3) has injector pump (5). Outlet of a given stage r of a subsequent stage is connected by fluid feed-back channel (11) to the injector pump. The driving fluid of the injector pump entrains the low pressure fluid for feeding it to inlets of a rotary stage. The feedback channel connects a downstream stage outlet to a given injector pump. Pump stages can be connected in parallel or in series.
FR7900849A 1978-01-13 1979-01-15 Multistage rotary pump with injectors - connects rotary stage outlet to injector pump on another stage inlet Pending FR2414645A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB137478 1978-01-13

Publications (1)

Publication Number Publication Date
FR2414645A1 true FR2414645A1 (en) 1979-08-10

Family

ID=9720906

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7900849A Pending FR2414645A1 (en) 1978-01-13 1979-01-15 Multistage rotary pump with injectors - connects rotary stage outlet to injector pump on another stage inlet

Country Status (3)

Country Link
DE (1) DE2901142A1 (en)
FR (1) FR2414645A1 (en)
SE (1) SE7900244L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506398A1 (en) * 1981-05-19 1982-11-26 Neyrpic Multi-stage turbine-pump - has two separate single stages connected in series hydraulically by external pipework

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107084110B (en) * 2017-04-05 2018-09-14 广州大学 A kind of drawing-in type grease hydraulic pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524269A (en) * 1946-10-14 1950-10-03 Sta Rite Products Inc Pump
US2845028A (en) * 1954-10-25 1958-07-29 Jacuzzi Bros Inc Shallow well expanded output pump
FR1403881A (en) * 1964-05-15 1965-06-25 Worthington Rotary pump equipped with a forced feed device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524269A (en) * 1946-10-14 1950-10-03 Sta Rite Products Inc Pump
US2845028A (en) * 1954-10-25 1958-07-29 Jacuzzi Bros Inc Shallow well expanded output pump
FR1403881A (en) * 1964-05-15 1965-06-25 Worthington Rotary pump equipped with a forced feed device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506398A1 (en) * 1981-05-19 1982-11-26 Neyrpic Multi-stage turbine-pump - has two separate single stages connected in series hydraulically by external pipework

Also Published As

Publication number Publication date
DE2901142A1 (en) 1979-07-19
SE7900244L (en) 1979-07-14

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