EP0538929B1 - Redresseur de flux - Google Patents

Redresseur de flux Download PDF

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Publication number
EP0538929B1
EP0538929B1 EP92203062A EP92203062A EP0538929B1 EP 0538929 B1 EP0538929 B1 EP 0538929B1 EP 92203062 A EP92203062 A EP 92203062A EP 92203062 A EP92203062 A EP 92203062A EP 0538929 B1 EP0538929 B1 EP 0538929B1
Authority
EP
European Patent Office
Prior art keywords
series
fins
vortices
ring
creating
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 - Lifetime
Application number
EP92203062A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0538929A1 (fr
Inventor
Patrice Ligneul
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 SA
Original Assignee
Schlumberger 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 Schlumberger SA filed Critical Schlumberger SA
Publication of EP0538929A1 publication Critical patent/EP0538929A1/fr
Application granted granted Critical
Publication of EP0538929B1 publication Critical patent/EP0538929B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F15D1/02—Influencing flow of fluids in pipes or conduits

Definitions

  • the present invention relates to an apparatus known as a flow rectifier intended to be mounted on a pipe traversed by a fluid in order to obtain a flow having no vortex capable of disturbing possible flow or other measurements.
  • a first defect comes from the asymmetry in the distribution of the velocities of the fluid in a plane perpendicular to the direction of flow.
  • Such asymmetry is for example caused by a bend in the pipe or by the shutter of a semi-closed valve, for example a wedge valve.
  • Another defect consists in the existence of vortices coaxial with the pipe which can as well arise spontaneously during the flow of the fluid as after the crossing of a half-closed valve as previously.
  • honeycomb Another device, known as a honeycomb, comprising a large number of tubes arranged longitudinally, in a cylindrical chamber mounted on the pipe.
  • a honeycomb device In addition to the fact that the manufacture and assembly of such a structure are expensive, a honeycomb device has, as previously, a significant longitudinal extension.
  • star rectifier which comprises a cylindrical chamber mounted on the pipe and in which walls are regularly mounted so as to materialize, in section, four or more diameters.
  • This device operates in a manner substantially similar to the honeycomb device and has the same drawbacks.
  • fins are mounted on the inside of the pipe and parallel to its axis. They aim to transform the overall rotation into four marginal vortices. No device of fins creating vortices counter-rotating compared to the preceding ones is envisaged (leaving the possibility to the secondary marginal vortices to recompose to restore a flow of rotation in the opposite direction). The longitudinal extension of these fins is deemed to be of two pipe diameters.
  • each fin Downstream of this first series of fins are mounted four fins on the inner face of the pipe perpendicular to the axis of the pipe and making an angle of 30 ° with a meridian of the pipe.
  • Each fin covers a part of about 1/8 of the circumference of the pipe and the radial extension of its projection on the axis of the pipe is about 1/6 of the diameter.
  • this device creates a turbulent mixture dissipating energy taken from the axial component of the speed of the fluid resulting in a significant dynamic pressure drop.
  • This device has a longitudinal extension of about four times the diameter of the pipe, therefore significant.
  • Document FR-A-2 306 356 discloses a flow rectifier in accordance with the preamble of claim 1, intended to be mounted on a pipe with a circular section traversed by a highly viscous liquid and which comprises, for example two plates arranged transversely to the direction of flow, offset with respect to each other and each made up of annular bands of increasing diameters arranged at regular intervals on a grid.
  • the strips are provided with wall elements which project perpendicular to the direction of flow in the intervals between the various annular strips and which are turned outwards.
  • the annular bands are also provided, in a similar manner, with wall elements which, this time, all face inward.
  • Such a rectifier makes it possible to homogenize the flow by locally creating random disturbances but does not make it possible to destroy the structures vortices of longitudinal axis present in the flow over a very short longitudinal distance.
  • the subject of the invention is therefore a flow straightener intended to regulate the profile of the speeds of a flow of fluid in a pipe and this over a very short distance compared to the diameter of this pipe thus making it possible to reduce the size of a measuring set.
  • the invention makes it possible to regularize the speed profile without imposing a significant pressure drop coefficient.
  • the invention relates to a flow straightener intended to be mounted on a pipe with circular section traversed by a fluid and comprising, in a ring, first means for creating a first series of transverse vortices all having a first direction of rotation, second means for creating a second series of transverse vortices all having a direction of rotation opposite to the first direction of rotation and paired with the vortices created by the first means, as defined in claim 1.
  • the device according to the invention therefore makes it possible to transform a main vortex present in the flow into a multitude of vortices of reduced dimensions.
  • Neighboring vortices moving in opposite directions tend to annihilate each other which increases efficiency and decreases the distance at the end of which the flow is regularized.
  • the vortices of the first and second series are substantially distributed in a peripheral ring of the ring.
  • the rotational speed of the vortex fluid increases from the center to the inner edge of the pipe.
  • the first means for creating a first series of vortices comprise a first series of fins oriented radially and regularly distributed over the internal surface of the ring.
  • the second means for creating a second series of vortices comprise a second series of radially oriented fins, arranged along a circumference centered on the center of the ring.
  • the second series of fins leaves an axial circular passage free.
  • the first means for creating a first series of vortices include a first series of fins oriented radially and regularly distributed over the internal surface of the ring, and the second means for creating a second series of vortices a circular support centered on the center of the ring the circular support delimiting an axial passage, a second series of fins oriented radially regularly distributed on the circular support and pointing towards the internal surface of the ring, the fins of the second series being angularly offset with respect to the fins of the first series.
  • the first series of fins is contained in a peripheral ring and the ends of the fins of the second series penetrate this peripheral ring.
  • the rectifier comprises internal fins fixed on the circular support and extending in the axial passage.
  • these internal fins are extensions of the fins of the second series.
  • the rectifier 1 comprises a ring 10 capable of being mounted on the pipe in which the flow to be regulated circulates.
  • a first series of fins 12 is regularly arranged, radially, on the internal face of the ring 10.
  • D corresponding to the diameter of the pipe (not shown) and in this embodiment to the inside diameter of the ring 10, the fins for example have a length of 0.15 D and a longitudinal extension of 0.2 D.
  • a second series of fins 14a is arranged regularly and radially on a circular support 16 centered on the center of the ring 10.
  • each fin 14a of the second series is arranged midway between two neighboring fins 12.
  • each fin 14a of the second series enters the crown delimited by the ends of the fins 12 of the first series.
  • the circular support 16 delimits an axial passage 18 of diameter equal for example to 0.6 D.
  • This passage 18 internal fins 14b, extensions of the fins 14a of the second series, point towards the center of the ring 10.
  • the fins 14a of the first series have for example a length of 0.075 D and a longitudinal extension of 0.2 D.
  • the internal fins 14b have in this configuration a length and a longitudinal extension identical to the previous ones.
  • the circular support 16 is fixed to the internal face of the ring by means of four fasteners 20.
  • the fasteners 20 regularly distributed over the circumference of the ring, take the place of a fin 14a.
  • the ring 10, the support 16, the fasteners 20, the fins 12, 14a, 14b are made of molded plastic or any other material capable of withstanding the stresses induced by the flow.
  • a marginal vortex of opposite direction of rotation is formed at the end of each fin 12 of the first series relative to that of the incident vortex.
  • each fin 14a of the second series It also forms at the end of each fin 14a of the second series, a marginal vortex of opposite direction of rotation relative to the direction of rotation of the vortices created by the first series of fins.
  • the number of fins is chosen to be sufficient to obtain the desired effect; in the realization represented in FIG. 1, there are twelve fins of the first series for eight fins 14a of the second series, four of the latter being replaced by fixings 20.
  • the device of the invention of extremely small longitudinal extension, approximately 0.2 D, and having a low pressure drop coefficient, of the order of 0.1, makes it possible to regulate a flow of fluid after a short distance traveled after the rectifier, about 1.5 D.
EP92203062A 1991-10-25 1992-10-06 Redresseur de flux Expired - Lifetime EP0538929B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9113298 1991-10-25
FR9113298A FR2683003B1 (fr) 1991-10-25 1991-10-25 Redresseur de flux.

Publications (2)

Publication Number Publication Date
EP0538929A1 EP0538929A1 (fr) 1993-04-28
EP0538929B1 true EP0538929B1 (fr) 1996-09-11

Family

ID=9418387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92203062A Expired - Lifetime EP0538929B1 (fr) 1991-10-25 1992-10-06 Redresseur de flux

Country Status (9)

Country Link
US (1) US5309946A (un)
EP (1) EP0538929B1 (un)
JP (1) JPH05202912A (un)
AT (1) ATE142748T1 (un)
CA (1) CA2079621A1 (un)
DE (1) DE69213648T2 (un)
DK (1) DK0538929T3 (un)
ES (1) ES2094279T3 (un)
FR (1) FR2683003B1 (un)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9319025D0 (en) * 1993-09-14 1993-10-27 Ans Karsto Metering & Technolo Flow cobditioner
EP0931199B1 (de) * 1996-10-11 2002-12-18 DIETER WILDFANG GmbH Strahlregler
US6042263A (en) * 1998-04-29 2000-03-28 Mentzer; Marvin R. Mixed phase ruff body flow diffuser
WO2004088062A1 (en) * 2003-04-04 2004-10-14 Siphonic Systems Limited Flow generator
US7306170B1 (en) * 2003-06-02 2007-12-11 Casino Advisory Services, Llc Lawn sprinkler flow control device and tool therefor
US7347223B2 (en) * 2003-07-21 2008-03-25 The Metraflex Company Pipe flow stabilizer
GB2431010C (en) * 2003-09-29 2008-06-25 Schlumberger Holdings Method and system for conditioning a multiphase fluid stream.
US7270214B1 (en) 2004-06-16 2007-09-18 Westerngeco L.L.C. Method and apparatus for reducing and extracting wing-tip vortex energy
GB2432425B (en) * 2005-11-22 2008-01-09 Schlumberger Holdings Isokinetic sampling method and system for multiphase flow from subterranean wells
US7708453B2 (en) * 2006-03-03 2010-05-04 Cavitech Holdings, Llc Device for creating hydrodynamic cavitation in fluids
US9068499B2 (en) * 2006-09-21 2015-06-30 Borg Warner Inc. Turbine housing with integrated ribs
GB2447908B (en) * 2007-03-27 2009-06-03 Schlumberger Holdings System and method for spot check analysis or spot sampling of a multiphase mixture flowing in a pipeline
WO2011073717A1 (en) * 2009-12-18 2011-06-23 Renault Trucks Mixing system for an exhaust gases after-treatment arrangement
EP2375224B1 (de) * 2010-03-18 2016-02-10 SICK Engineering GmbH Ultraschallmessvorrichtung und Verfahren zur Messung der Strömungsgeschwindigkeit eines Fluids
US8439071B2 (en) * 2011-05-27 2013-05-14 Johnson Screens, Inc. Screen basket vortex breaker for vessel
TWM458497U (zh) * 2013-04-08 2013-08-01 guo-zhen Cai 水槌消除裝置
DE202015006618U1 (de) * 2015-09-18 2016-12-21 Neoperl Gmbh Strahlregler
JP6362041B1 (ja) * 2017-01-31 2018-07-25 Toto株式会社 吐水装置
US11796255B2 (en) 2017-02-24 2023-10-24 Holtec International Air-cooled condenser with deflection limiter beams
KR102406322B1 (ko) * 2017-06-28 2022-06-10 홀텍 인터내셔날 열악한 사용 조건을 위한 열교환기
CN107314005B (zh) * 2017-07-18 2023-06-23 中国联合工程有限公司 一种异种金属堆焊高温高压管道用整流结构
DE102017126645A1 (de) * 2017-11-13 2019-05-16 Feuerverzinkung Hannover Gmbh & Co. Kg Verfahren und Vorrichtung zur Oberflächenbehandlung
JP7270371B2 (ja) * 2018-12-13 2023-05-10 スタンレー電気株式会社 流体殺菌装置
US11448160B2 (en) 2019-09-23 2022-09-20 General Electric Company High temperature gradient gas mixer
CN114423952A (zh) * 2019-09-26 2022-04-29 株式会社荏原制作所 立式多级泵
CN112747015B (zh) * 2021-01-12 2022-06-21 江苏大学 一种核主泵连接管道非均匀来流抑制结构
US11739774B1 (en) * 2023-01-30 2023-08-29 Vortex Pipe Systems LLC Flow modifying device with performance enhancing vane structure

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CH20606A (de) * 1899-12-26 1901-02-28 Albert Schmitz Rippenrohr
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Also Published As

Publication number Publication date
DE69213648D1 (de) 1996-10-17
DK0538929T3 (un) 1997-03-03
ES2094279T3 (es) 1997-01-16
CA2079621A1 (fr) 1993-04-26
FR2683003B1 (fr) 1995-02-17
ATE142748T1 (de) 1996-09-15
JPH05202912A (ja) 1993-08-10
EP0538929A1 (fr) 1993-04-28
DE69213648T2 (de) 1997-03-27
US5309946A (en) 1994-05-10
FR2683003A1 (fr) 1993-04-30

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