EP0003202B1 - Dispositif pour transformer un écoulement primaire diphasique en plusieurs écoulements diphasiques secondaires - Google Patents

Dispositif pour transformer un écoulement primaire diphasique en plusieurs écoulements diphasiques secondaires Download PDF

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Publication number
EP0003202B1
EP0003202B1 EP19790400026 EP79400026A EP0003202B1 EP 0003202 B1 EP0003202 B1 EP 0003202B1 EP 19790400026 EP19790400026 EP 19790400026 EP 79400026 A EP79400026 A EP 79400026A EP 0003202 B1 EP0003202 B1 EP 0003202B1
Authority
EP
European Patent Office
Prior art keywords
tubular body
phase fluid
blades
flow
hub
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
EP19790400026
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0003202A3 (en
EP0003202A2 (fr
Inventor
Marcel Arnaudeau
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.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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 IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of EP0003202A2 publication Critical patent/EP0003202A2/fr
Publication of EP0003202A3 publication Critical patent/EP0003202A3/xx
Application granted granted Critical
Publication of EP0003202B1 publication Critical patent/EP0003202B1/fr
Expired 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
    • F15D1/14—Diverting flow into alternative channels

Definitions

  • the present invention relates to a device for transforming a two-phase primary flow, for example composed of saturated liquid and free gas not dissolved in this liquid, into several secondary flows similar to the primary flow, in which the ratio of the volume of gas to that of the liquid making up these secondary flows is preferably substantially equal to that of the primary flow.
  • the treatments of these two-phase flows are carried out using apparatuses which generally have optimal performance when treating two-phase flows having characteristics corresponding to those provided during the manufacture of these devices.
  • the primary flow may be necessary to divide the primary flow into several secondary flows which, for the reasons indicated above, must have characteristics, such as free gas content, pressure, etc ..., which are constant over time. Preferably, these characteristics must be substantially identical to those of the primary flow.
  • This assembly comprises a main tube, a divider element inside which are formed radial cross partitions, and four outlet tubes, the ends of which are formed so as to constitute sectors in a quarter of a circle.
  • such a device can only be used for homogeneous flows.
  • it can only be used for a two-phase flow, consisting, for example, of a gas-liquid mixture, only if the spatial distribution of the phases in the flow is not appreciably affected by gravity effects.
  • this prior device gives poor results, particularly if it is arranged horizontally, due to the differential action of gravity on the gas and liquid phases.
  • the device according to the invention making it possible to eliminate this drawback is characterized in that it comprises in combination a hub (2) placed coaxially in the tubular body (1) with which it defines an annular space open at its two ends, this hub comprising blades (3a, 3b, 3c ...) and means (22) for stabilizing the flow making it possible to ensure symmetry of revolution in the distribution of the phases around the axis of the hub before the distribution of the fluid between said outlet conduits.
  • This device achieves, in effect, a laminated flow of revolution around the axis of the hub, this flow being cut radially by the blades.
  • the gaseous phase is thus evenly distributed between the various outlet conduits, as is the liquid phase.
  • FIG. 1 An embodiment of the device according to the invention is schematically represented in section in FIG. 1.
  • This device essentially comprises a tubular body 1, a hub 2, blades 3a, 3b, 3c ... and a set of outlet pipes 4a, 4b, 4c ...
  • connection means such as a fixing flange 6 allowing, by means of screws or bolts shown diagrammatically at 7, the watertight fixing of the device in the extension of a pipe 8, drawn in broken lines, in which the primary flow of two-phase fluid takes place in the direction indicated by the arrows F.
  • the hub 2 the outside diameter of which is less than the diameter of the bore of the body 1 is held coaxially inside this bore with which it delimits an annular space.
  • the hub 2 is, on the side of the inlet 5, extended by a profiled part 9 making it possible to minimize the disturbances in the flow of the primary two-phase fluid, when it enters the device.
  • the bore of the body 1 and the outer surface of the hub 2 are cylindrical and delimit an annular space whose cross section is constant, but it would not depart from the scope of the invention if one and / or the other of these surfaces was conical and if, consequently, the cross section of the annular space varied.
  • Blades such as 3a, 3b, 3c and 3d which are all visible in FIG. 2 (which is a view on the left of FIG. 1) divide the annular space comprised between the hub 2 and the bore of the body 1 into compartments 10a, 10b, 10c, 10d, substantially tight relative to one another and opening out at the ends of the body 1.
  • These blades which can be flat and arranged radially in the annular space delimited by the body 1 and the hub 2, or which can be preformed as will be indicated. subsequently, are fixed by any suitable means, such as welding, etc., either on the hub 2, or on the body 1, or even on both at the same time. Optionally, they can maintain the hub 2 in position inside the body 1.
  • n of blades can vary depending on requirements. Four have been shown, by way of example, in the figures, but in general, this number depends on the number of secondary flows that it is desired to obtain.
  • the end of the body 1 opposite the inlet 5 ( Figure 1) is closed by a cover 11 fixed to the body 1 for example by screws or bolts 12 cooperating with a fixing flange 13 of the body 1.
  • This cover can also maintain the hub 2 in position, for example, by means of a fixing screw shown diagrammatically at 19.
  • the cover 11 is provided with orifices 14a, 14b, 14c ... in a number equal to the number of blades and it is positioned so that each orifice communicates exclusively with one of the compartments delimited by two consecutive blades.
  • each of these orifices has the form of an annular sector of the same section as the compartment with which it communicates, this section being measured along a plane perpendicular to the longitudinal axis of the body 1.
  • Each orifice 14a, 14b .. of the cover 11 communicates exclusively with a conduit such as 4a, 4b, 4c ... fixed on the cover 11.
  • each of these conduits has a section whose surface area preferably remains constant but whose shape changes, as shown in Figures 4, 5, 6 which are sections along lines IV, V and VI of Figure 1.
  • conduits all visible in Figure 3, which is a right view of Figure 1, can be connected to pipes such as 15, 16, 17 ... shown in broken lines and that the device according to the invention supplies in two-phase fluid.
  • the operation of the device is simple.
  • the primary flow of two-phase fluid is divided into as many secondary two-phase flows as there are compartments 10a, 10b, 10c ... and each of these secondary flows is directed to one of the use pipes 15, 16, 17 ... by one of the corresponding conduits 4a, 4b, 4c ...
  • the blades 3a, 3b, 3c ... will advantageously be blades planes placed radially and profiled so as not to disturb the flow, as shown in FIG. 7 which is a developed view of the hub 2 carrying the blades.
  • the profile of each blade may or may not be warped to that at any point on the leading edge, the angle of inclination of the blade (fig. 8) satisfies the relation R being the distance from the point considered to the axis of the device.
  • the blades may have a profile whose radius of curvature decreases from the inlet to the outlet.
  • the pipes 4a, 4b, 4c and 4d may be preformed so that their axes at the level of the cover 11 are substantially parallel to the angle formed by the blades with the axis of the device.
  • the device illustrated in FIGS. 1 to 9 makes it possible to transform a two-phase primary flow into several secondary flows which will have a free gas content little different from that of the primary flow, when the distribution of the phases has a symmetry of revolution around l 'axis of the primary flow at the inlet of the body 1. In all other cases, the free gas contents of the secondary flows will be different.
  • This assembly essentially comprises an intake manifold 21, a stabilizing element 22 and possibly a member 23 adapted to increase the pressure of the two-phase fluid before its introduction into the body 1.
  • the intake manifold 21 is a manifold bent along a large radius of curvature, so as not to introduce a significant pressure drop in the primary flow.
  • the stabilizing member 22 can be of any known type and is intended to keep the content of free gas in the primary flow substantially constant, or at least to prevent this content from undergoing rapid variations.
  • this stabilizing member could be of the helical-axial pump type, such as the pumping member for two-phase fluid described in French patent application FR-A No. 2,333,139.
  • this stabilizer member comprises a plurality of hubs 24 integral in rotation with a shaft 28 driven by a motor 32 ( Figure 10) whose speed of rotation is preferably continuously adjustable.
  • Each of the hubs 24 carries blades 25 whose radius of curvature as well as the angle formed by the axis of rotation and the tangent to the profile of each blade decrease in the direction of flow of the two-phase fluid.
  • rectifiers comprising blades 26 integral with the housing 33 of the stabilizer 22 and which are also integral with a hub 27 of tubular shape.
  • the shaft 25 passes through all the hubs 27, at least some of which also constitute rolling bearings of the shaft 28 with, if necessary, interposition of ball bearings (not shown in the drawings).
  • a pumping member 23 whose purpose is to increase the pressure of the two-phase fluid after stabilization, to compensate for the pressure losses.
  • This pumping member comprises a hub 29 which carries blades 30 whose profile, adapted to increase the pressure of the two-phase fluid, is of the type described in the French patent application cited above.
  • This hub 29 is rotated by a drive shaft which in the case illustrated in FIG. 11 is the shaft 28 but can also be a different shaft 31 driven by a second motor, not shown, which can have a variable speed.
  • the speed of rotation of the motor shaft (s) is adjusted to obtain the best results, depending on the flow conditions of the two-phase fluid.
  • the distribution of the blades 3a, 3b, 3c ... on the hub 2 can be made as a function of the relative flow rate of each secondary flow with respect to the primary flow.
  • these blades can be evenly distributed when the secondary flows have the same flow, but the angular spacing between two consecutive blades can be increased to obtain a greater flow of the secondary flow that they delimit, or decreased in the opposite case. .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP19790400026 1978-01-16 1979-01-12 Dispositif pour transformer un écoulement primaire diphasique en plusieurs écoulements diphasiques secondaires Expired EP0003202B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7801316 1978-01-16
FR7801316A FR2414651A1 (fr) 1978-01-16 1978-01-16 Dispositif pour transformer un ecoulement primaire diphasique en plusieurs ecoulements diphasiques secondaires

Publications (3)

Publication Number Publication Date
EP0003202A2 EP0003202A2 (fr) 1979-07-25
EP0003202A3 EP0003202A3 (en) 1979-08-08
EP0003202B1 true EP0003202B1 (fr) 1981-10-28

Family

ID=9203587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790400026 Expired EP0003202B1 (fr) 1978-01-16 1979-01-12 Dispositif pour transformer un écoulement primaire diphasique en plusieurs écoulements diphasiques secondaires

Country Status (3)

Country Link
EP (1) EP0003202B1 (zh)
DE (1) DE2961089D1 (zh)
FR (1) FR2414651A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7261120B2 (en) 2003-06-24 2007-08-28 Morten Muller Ltd. Aps Device for splitting a two-phase stream into two or more streams with the desired vapor/liquid ratios

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039384A1 (de) * 1980-10-18 1982-05-19 Ruhrkohle Ag Vorrichtung zum verblasen von (alpha) -halbhydrat und/oder (beta) -halbhydrat
AU2012202150B1 (en) * 2012-04-13 2013-07-11 Process Development Centre Pty Ltd. A flow distributor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR617616A (fr) * 1926-06-16 1927-02-23 Cie Des Surchauffeurs Mode d'assemblage, en bout, d'un tube unique avec une série de tubes
CH150064A (de) * 1930-09-12 1931-10-15 Krauss Richard Hosenrohrdichtung an der Anschlussstelle an ein vollzylindrisches Rohr, insbesondere Hochdruckwasserleitungsrohr.
BE484817A (zh) * 1947-11-07
DE800713C (de) * 1948-10-02 1950-11-30 Babcock & Wilcox Dampfkessel W Rohrverteilstueck
DE800173C (de) 1949-01-01 1950-10-12 Knorr Bremse Gmbh Druckluftbremse fuer Lokomotiven
GB971405A (en) * 1962-10-19 1964-09-30 Ford Motor Co Motor vehicle exhaust systems
US3504709A (en) * 1965-10-07 1970-04-07 Gen Motors Corp Branched conduit
FR2280017A1 (fr) * 1974-04-26 1976-02-20 Creusot Loire Dispositif repartiteur d'un courant fluide en plusieurs flux
FR2333139A1 (fr) 1975-11-27 1977-06-24 Inst Francais Du Petrole Dispositif perfectionne pour le pompage des fluides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7261120B2 (en) 2003-06-24 2007-08-28 Morten Muller Ltd. Aps Device for splitting a two-phase stream into two or more streams with the desired vapor/liquid ratios

Also Published As

Publication number Publication date
EP0003202A3 (en) 1979-08-08
FR2414651A1 (fr) 1979-08-10
FR2414651B1 (zh) 1980-05-16
DE2961089D1 (en) 1982-01-07
EP0003202A2 (fr) 1979-07-25

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