GB1125049A - Improvements in and relating to fluid diffusers - Google Patents

Improvements in and relating to fluid diffusers

Info

Publication number
GB1125049A
GB1125049A GB5381365A GB5381365A GB1125049A GB 1125049 A GB1125049 A GB 1125049A GB 5381365 A GB5381365 A GB 5381365A GB 5381365 A GB5381365 A GB 5381365A GB 1125049 A GB1125049 A GB 1125049A
Authority
GB
United Kingdom
Prior art keywords
diffuser
wall
maximum
dec
degrees
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.)
Expired
Application number
GB5381365A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Switzerland
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Switzerland, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Switzerland
Publication of GB1125049A publication Critical patent/GB1125049A/en
Expired 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

1,125,049. Boundary layer control. BROWN, BOVERI & CO. Ltd. 20 Dec., 1965 [22 Dec., 1964], No. 53813/65. Heading F2R. [Also in Division G3] Breakaway in wide-angled diffusers is prevented by arranging for the flow at the inlet to the diffuser to have a velocity profile exhibiting a maximum at least in the vicinity of the diffuser wall. Such maximum velocity adjacent the wall may be established by means of blade members located upstream of the diffuser, and exists at a maximum distance of 0.2r H as measured from the wall, r H being the hydraulic radius of the diffuser at a given cross-section thereof. The total angle of the diffuser is at least 20 degrees and may exceed 40 degrees.
GB5381365A 1964-12-22 1965-12-20 Improvements in and relating to fluid diffusers Expired GB1125049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1648864A CH418510A (en) 1964-12-22 1964-12-22 Process for detachment-free pressure increase of media flowing in diffusers and arrangement for carrying out the process

Publications (1)

Publication Number Publication Date
GB1125049A true GB1125049A (en) 1968-08-28

Family

ID=4417809

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5381365A Expired GB1125049A (en) 1964-12-22 1965-12-20 Improvements in and relating to fluid diffusers

Country Status (3)

Country Link
CH (1) CH418510A (en)
FR (1) FR1460418A (en)
GB (1) GB1125049A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1892384A1 (en) * 2006-08-25 2008-02-27 Siemens Aktiengesellschaft Diffuser for a steam turbine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9415685D0 (en) * 1994-08-03 1994-09-28 Rolls Royce Plc A gas turbine engine and a diffuser therefor
CN111852898A (en) * 2020-07-17 2020-10-30 上海凯泉泵业（集团）有限公司 Structure of channel diffusion part of submersible axial flow pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1892384A1 (en) * 2006-08-25 2008-02-27 Siemens Aktiengesellschaft Diffuser for a steam turbine

Also Published As

Publication number Publication date
FR1460418A (en) 1966-11-25
CH418510A (en) 1966-08-15

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