EP3295037A1 - Dispositif de conditionnement, débitmètre de masse et procédé - Google Patents

Dispositif de conditionnement, débitmètre de masse et procédé

Info

Publication number
EP3295037A1
EP3295037A1 EP15747238.2A EP15747238A EP3295037A1 EP 3295037 A1 EP3295037 A1 EP 3295037A1 EP 15747238 A EP15747238 A EP 15747238A EP 3295037 A1 EP3295037 A1 EP 3295037A1
Authority
EP
European Patent Office
Prior art keywords
conditioning
conditioning device
foregoing
wall
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.)
Withdrawn
Application number
EP15747238.2A
Other languages
German (de)
English (en)
Inventor
Antonius Cornelis Johannes Kromwijk
Harmen Jan KOBUS
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.)
Fusion Electronics BV
Original Assignee
Fusion Electronics BV
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 Fusion Electronics BV filed Critical Fusion Electronics BV
Publication of EP3295037A1 publication Critical patent/EP3295037A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/007—Monitoring milking processes; Control or regulation of milking machines
    • A01J5/01—Milkmeters; Milk flow sensing devices
    • 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
    • F15D1/0015—Whirl chambers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/72—Devices for measuring pulsing fluid flows

Definitions

  • the present invention relates to a conditioning device for conditioning a fluid mixture, such as in a throughflow system and/or measuring system, such as in a milking plant for milking mammals.
  • the present invention also relates to a mass flow measuring device for determin ⁇ ing a mass flow rate of a fluid, such as comprising milk, such as one for a milking plant for milking mammals, com- prising a conditioning device according to the present invention.
  • the present invention also relates to a respec ⁇ tive method for conditioning and for measuring.
  • the present applicant has an international patent application WO 2013/165236 relating to a mass flow measur- ing device for a milking system.
  • the publication of this international patent application is included here by way of reference for the purpose of sufficiency of disclosure of a mass flow measuring device. It is a characteristic of a milking system that the milk is drawn off pulse-wise from the mammal such as a cow. This creates liquid slugs in the discharge conduits which are highly irregular in respect of the pressure in the conduit and the mass flow rate. Another way of formulating this is to say that quantities of liquid with a greater kinetic energy are alter- nated with quantities of gas. In order to carry out a quantity measurement for the milk it is advantageous for a uniform flow to be guided through the quantity meter.
  • the present invention provides for this purpose a conditioning device for conditioning a fluid mixture in a throughflow system and/or measuring system, such as in a milking plant for milking mammals, the device comprising:
  • At least one conditioning chamber wall for providing a conditioning action along the conditioning chamber wall to the conditioning device.
  • An advantage of the present invention is that the conditioning action is provided by the conditioning chamber wall so that the fluid is carried in conditioned state through the outlet. Because the conditioning action is provided by the conditioning chamber wall along the condi ⁇ tioning wall, a fluid introduced in substantially pulse or slug-like manner is discharged relatively uniformly. The relatively uniformly discharged fluid can be measured in reliable manner. A reflux caused by differences in air pressure in the system and differences in air pressure be ⁇ cause of the slug-wise transport is also prevented, this increasing the reliability of the measurements.
  • a further advantage is that kinetic energy from the slugs is ab- sorbed along the conditioning chamber wall and the flow becomes calmer as a result.
  • the conditioning device comprises flow influencing means such as blades, fins, ribs, recesses and/or a coating.
  • flow influencing means such as blades, fins, ribs, recesses and/or a coating.
  • the action of the conditioning chamber wall is hereby further enhanced due to the slowing effect of the flow influencing means.
  • the at least one conditioning chamber wall in the conditioning device more preferably comprises a side wall and a bottom wall, more preferably an upper wall.
  • the ac- tion can hereby be spread over different wall parts.
  • the bottom wall and the space between the bottom wall and side wall also imparts a volume shaping effect.
  • the at least one conditioning chamber wall more preferably comprises a lower wall or lower wall part with an inclination in the direction of the outlet, preferably wherein the lower wall or the lower wall part comprises ribs or recesses for the purpose of slowing a fluid flow- ing thereover.
  • the conditioning device provides an effect during use which provides that, while fluid is flowing through, pressure fluctuations due to a blocking action of the fluid such as a liquid between the conditioning chamber wall and a downstream space, such as the discharge conduits, are prevented.
  • This effect im ⁇ proves the reliability of the measurement and regularity of the throughflow in the downstream route.
  • the conditioning device provides an effect during use which entails that a pulse-wise supply of liquid through the inlet is converted to a flow-like discharge of liquid through the outlet. This effect also improves the reliability of the measure- ment and regularity of the throughflow in the downstream route .
  • the conditioning device comprises flow influencing means against a side wall, wherein the flow influencing means are preferably elon- gate, and more preferably have a greater effect on the upper side thereof than on the underside, preferably embod ⁇ ied as a relatively high top close to the upper side in ⁇ clining downward to a relatively low foot on the under ⁇ side. Owing to the relatively high top close to the upper side the liquid flowing against a side wall is slowed down, or forced downward, relatively strongly. Owing to the relatively low foot on the underside the flow along the lower part of the side wall is slowed relatively lit- tie, whereby it slows uniformly. A volume-buffering action is hereby realized at this position for holding liquid when the slugs are relatively large and/or frequent.
  • the conditioning device can process both the minimum flow rate and the maximum flow rate within a predetermined bandwidth irrespective of the intensity of the slugs with this flow rate is supplied.
  • the form of the space provides a buffer for this purpose.
  • the at least one conditioning chamber wall more preferably comprises a side wall or side wall part prefer ⁇ ably running substantially vertically, more preferably running outward at an angle from the underside, more pref ⁇ erably running inward at an angle from the underside.
  • a skilled person can define a suitable wall configuration within the scope of the present invention.
  • the inlet is oriented during use in horizontal direction toward the conditioning chamber, more preferably oriented toward the conditioning chamber wall such that a fluid flow is directed so that it flows in along the wall.
  • the conditioning chamber wall more preferably comprises a cavity for holding a quantity of fluid for the purpose of performing specific resistance measurements, wherein the cavity is preferably suitable for arranging therein at least two electrodes for performing the meas ⁇ urements. It is hereby possible to already integrate a specific resistance meter in the conditioning chamber wall, whereby a mass flow measuring device can be arranged under the conditioning chamber. It hereby becomes possible to minimize the overall height of the device, this being a great advantage in determined setups in practice.
  • An effect of the conditioning is more preferably that a virtual bypass is provided during throughflow and conditioning of a liguid, wherein the virtual bypass is arranged substantially coaxially in the outlet.
  • a virtual bypass can be deemed a liquid-free core of a vor- tex with the particular advantage in the present case that an open gas connection is realized by means of this virtu ⁇ al bypass between for instance a supply conduit of a milk ⁇ ing plant and the conditioning chamber wall.
  • One of the effects of the conditioning is there- fore more preferably that a liquid is brought into a rota ⁇ tional flow relative to the conditioning chamber wall.
  • the device more preferably comprises coupling means for coupling to a mass flow meter or a liquid meter.
  • the conditioning chamber wall more preferably has space on the upper side of the inlet for free flow-off of liquid.
  • the inlet is ar- ranged for infeed from an upper side, preferably further provided with distributing means for lateral distribution of the fluid, more preferably with a spiralling effect.
  • a further embodiment comprises an external return conduit external to the conditioning chamber and outlet which is connectable between an outfeed space of the outlet and the conditioning chamber wall.
  • a conditioning device for conditioning a fluid mixture in a throughflow system and/or measuring system such as in a milking plant for milking mammals, the device comprising:
  • At least one conditioning chamber wall for providing a conditioning action to the conditioning device
  • a conditioning device preferably comprises for this purpose a number of uprights or lamellas in a sub- stantially annular arrangement round the outlet.
  • the at least one upright or lamella more preferably covers more than 30% of the periphery, and preferably covers more than 40%, more preferably more than 50%, 60%, 70%, 80% and/or 90% of a periphery of the outlet or an annular area therearound, preferably in top view.
  • This ratio depends on the flow rate variations to be an ⁇ ticipated in the supply of the fluid mixture and the de ⁇ sirable variations in the flow rate to the outlet. The skilled person can determine a predetermined ratio within the scope of the present invention.
  • a further aspect according to the present inven ⁇ tion relates to a mass flow measuring device for determining a mass flow rate of a fluid, such as comprising milk, such as one for a milking plant for milking mammals, com- prising a conditioning device according to the present invention.
  • a mass flow measuring device for determining a mass flow rate of a fluid, such as comprising milk, such as one for a milking plant for milking mammals, com- prising a conditioning device according to the present invention.
  • a further aspect according to the present inven- tion relates to a method for conditioning a liquid, comprising steps for:
  • An advantage of such a method is that measurement is pos ⁇ sible while applying the positive effects of a conditioned flow .
  • the method is applied with a device according to the present invention.
  • An advantage of such a method is that measure ⁇ ment is possible while applying the positive effects of the conditioning device.
  • Fig. 1A-C show three views of a first preferred embodiment according to the present invention.
  • Fig. 2A shows a detail view of the preferred embodiment according to Fig. 1, and Fig. 2B shows a view of a further preferred embodiment.
  • Fig. 3A-F show views of preferred embodiments with different embodiments of conditioning walls.
  • Fig. 4 shows a further preferred embodiment ac ⁇ cording to the present invention.
  • Fig. 5A, B show a further preferred embodiment according to the present invention.
  • Fig. 6 and 7 each show a sectional view of a con- ditioning chamber according to a further embodiment according to the present invention.
  • Fig. 8 shows a part according to the invention comprising moulded electrodes of a flow rate meter accord ⁇ ing to the present invention for the purpose of the out- flow from the conditioning chamber.
  • a first preferred embodiment (Fig. 1) relates to a conditioning device 1.
  • This comprises a conditioning chamber 2 which is formed by a conditioning chamber wall comprising a conically arranged upper wall 4, a substantially vertically arranged side wall 6 and a bottom wall 8.
  • a fluid inlet 10 is arranged close to the upper side of vertical wall part 6. Infeed takes place such that inflowing liquid is pushed along or against the inner side of wall 6. Blades or fins 12 are arranged on the inner side of the wall. These blades 12 serve to slow down the liquid flow fed in along the wall. On the upper side the blades have a relatively high top as seen from the wall, while on the underside the blades have a relatively low foot as seen from the wall. As a result the liquid is slowed down more quickly on the upper side than on the underside, whereby a circulating flow can be maintained on the underside, or can at least be maintained sufficiently to create a liquid buffer due to the circulating flow.
  • the bottom 16 of the conditioning chamber wall inclines downward to some extent at a predetermined angle a.
  • the size of this angle defines the buffering action of the space defined by the bottom and the wall.
  • Discharge conduit 18 is located centrally in the bottom.
  • Fig. 2 shows an example of a liquid as may be present between the feed of two liquid slugs.
  • the preceding liquid slug has already been slowed by the upper side of the blades and is present in the underside of the condi ⁇ tioning chamber, forced by the circulating flow against the bottom and the side wall. Owing to the slowing action of the walls, the ribs and the blades the liquid flows gradually into discharge conduit 18. Important for the present invention is that the liquid flows along the walls of discharge conduit 18, whereby a gas passage space 20 remains available during outflow of the liquid.
  • an optimally functioning conditioning de- vice can be designed by a skilled person within the scope of the present invention.
  • a plurality of conditioning devices are arranged in parallel. It is also envisaged that several conditioning devices are switched on or off depending on the incidentally required capacity.
  • Fig. 2A shows how liquid space 17 is arranged in bottom 16 for receiving electrodes for an ohmmeter.
  • the resistance of the liquid currently being treated can here- by be determined.
  • Fig. 2B shows a variant of the liquid space 17' wherein the liquid flows into the chamber on the upper side and hereby flows out of a very small opening 19 through discharge conduit 18.
  • the liquid is hereby re ⁇ freshed continuously in alternative manner whereby the re- sistance of the liquid currently being treated can be measured at all times.
  • Fig. 3A-3F show schematic views of the shape of the conditioning chamber wall.
  • a relatively large buffer is present on the underside.
  • the shape of the side wall does however cause a relatively rapid descent of the liquid.
  • Fig. 3B the liquid is fed in at a relative ⁇ ly low position, with a relatively large buffer on the underside. Only in the case of large slugs is liquid pushed higher against the side wall.
  • Fig. 3C is an em- bodiment wherein there is substantially no bottom part. This embodiment has a relatively small buffer action and can therefore be applied in the case of relatively small slugs.
  • Fig. 3D and Fig. 3E show a configuration with a very rapid descent because of the shape of the side wall.
  • the relatively wide bottom part nevertheless provides for a relatively large buffering action.
  • the difference is a shape of the ribs in the side wall of these parts.
  • Shown in Fig. 3F is a shape likewise having substantially no bottom, and even no ribs, whereby the effect of the slowing is achieved mainly by the conditioning action of the side wall as well as by the inflow direction of the slugs.
  • This embodiment is hereby suitable for relatively fast slugs, preferably when these are relatively small.
  • Fig. 4 shows an embodiment wherein an external by ⁇ pass 31 runs from an outfeed space 32, which is embodied in practical manner as a conduit in a milking system for a farm, to the upper side of conditioning chamber 2.
  • ⁇ pass 31 runs from an outfeed space 32, which is embodied in practical manner as a conduit in a milking system for a farm, to the upper side of conditioning chamber 2.
  • a mass flow meter 40 is mounted direct ⁇ ly below conditioning device 1. Shown from the outside are the electrodes 41, 41', 42, 42', the operation of which corresponds to those of the measuring device according to the cited PCT publication. An alternative variant is shown schematically in similar manner in Fig. 5B .
  • Fig. 6 and 7 show sectional views of the condi- tioning chamber with the lamellas or uprights according to the present invention.
  • a conditioning chamber with a bottom wall 16 and a side wall 6 which is provided with fins 12 having a similar function as in the above embodiments.
  • the outflow channel with wall 18 likewise has a function similar to the above embodiments.
  • Arranged around the mouth of the outflow channel are lamellas 51 for the purpose of influencing the flow of the liquid mixture so that, when excess liquid flows in, it flows out in uniform manner. It is advantageous here for the outflow to be such that not the whole surface of the outflow channel is full, so that no pressure differences occur in the outflow chan ⁇ nel between the inlet and the outlet of the device.
  • the bottom has an opening 17 for measuring therein the specific resistance of the currently present mixture.
  • the channel has electrodes 61,62,63,64 which are arranged in the wall. These electrodes are provided with respective wires 61 ' , 62 ' , 63 ' , 64 ' . These wires are arranged in the wall material by means of a welding operation be ⁇ fore moulding of the electrodes. It is envisaged to place these electrodes in a separate electrode holder (Fig. 8) or directly into the wall of the channel. This electrode holder can be applied separately or can form the wall 18 of an outlet.
  • An advantageous method of manufacture comprises the following steps.
  • the electrodes are first punched out of a metal plate.
  • the electrodes are then arranged accu ⁇ rately relative to a metal tube 68 around which the open- ings in the electrode fit. These electrodes are then weld ⁇ ed fixedly to this tube.
  • the connecting wires are welded to the electrodes before injection moulding takes place.
  • the tube is then arranged in an injection moulding die, after which the whole is moulded in a suitable plastic.
  • the wall of the outlet channel is subsequently manufactured by means of a milling operation wherein the whole of the temporary tube 68 and an inner edge of the electrode is cut away in one operation. This creates a flat channel wall 18.
  • a further aspect of the present invention relates to a method for manufacturing a sensor, preferably for a throughflow system or mass flow meter, comprising steps fo : - attaching, preferably by means of welding, at least two annular electrodes to a temporary support member such as a tubular member,
  • a further preferred embodiment comprises steps for attaching, such as by means of welding, a wire to the electrode and/or an arm-like member extending from the electrode for the purpose of transporting signals from and/or to the electrodes.
  • a wire to the electrode and/or an arm-like member extending from the electrode for the purpose of transporting signals from and/or to the electrodes.
  • these wires are attached by means of for instance welding, determined types of injection mouldable material would be damaged if this were per- formed after the injection moulding.
  • the elec ⁇ trodes are first provided with the wires and injection moulding is then performed.
  • the removal operation is advantageous here because the electrodes can be positioned very firmly and accurate ⁇ ly and the support member is removed by means of the re ⁇ moval operation after the moulding operation. Removal processes which are envisaged are, among others, drilling, milling, grinding, cutting etc. A further advantage of a removal process is that a punched edge which may be left behind when the electrodes are punched out of a metal sheet can hereby also be removed in one operation.
  • a further aspect relates to a mass flow meter with conditioning chamber comprising a moulded space for holding electronics such as measure ⁇ ment electronics.
  • the lower half of the device comprises for this purpose a space for holding electronic elements which is liquid-tight relative to the upper half.

Abstract

La présente invention concerne un dispositif de conditionnement servant à conditionner un mélange fluide dans un système à débit traversier et/ou système de mesure, tel qu'une installation de traite pour des animaux laitiers, lequel dispositif comprend: - une chambre de conditionnement, - un orifice d'entrée pour apporter le mélange fluide dans la chambre de conditionnement; - un orifice de sortie pour évacuer le mélange fluide hors de la chambre de conditionnement, - au moins une paroi de chambre de conditionnement pour exercer une action de conditionnement sur le dispositif de conditionnement. La présente invention concerne un débitmètre massique comprenant un tel dispositif de conditionnement et un procédé de conditionnement.
EP15747238.2A 2015-05-12 2015-05-12 Dispositif de conditionnement, débitmètre de masse et procédé Withdrawn EP3295037A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NL2015/050335 WO2016182432A1 (fr) 2015-05-12 2015-05-12 Dispositif de conditionnement, débitmètre de masse et procédé

Publications (1)

Publication Number Publication Date
EP3295037A1 true EP3295037A1 (fr) 2018-03-21

Family

ID=53783267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15747238.2A Withdrawn EP3295037A1 (fr) 2015-05-12 2015-05-12 Dispositif de conditionnement, débitmètre de masse et procédé

Country Status (3)

Country Link
EP (1) EP3295037A1 (fr)
NL (1) NL2015207B1 (fr)
WO (1) WO2016182432A1 (fr)

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US3507356A (en) * 1967-09-22 1970-04-21 Aeronca Inc Mixing and sound baffle assembly for gaseous fluid systems
CH545920A (de) * 1971-08-12 1974-06-28 Hermann Hagenbucher Armin Vorrichtung zum Umlenken eines fliessenden, flüssigen oder gasförmigen Mediums auf eine Spiralströmung und Verwendung der Vorrichtung
US4333499A (en) * 1980-04-15 1982-06-08 Conoco Inc. Pressure dissipation apparatus
DE3101302A1 (de) * 1981-01-16 1982-08-05 Bio-Melktechnik Swiss Hoefelmayr & Co, 9052 Niederteufen, Aargau "milchflussmesser"
DE3435477A1 (de) * 1984-09-27 1986-03-27 Hansjörg Dr.-Ing. 6990 Bad Mergentheim Brombach Abwasserdrossel
BE901137A (nl) * 1984-11-27 1985-03-15 Packo Agri Nv Werkwijze voor het doorlopend meten van een vloeistofproduktie uit een vloeistof-gas mengeling en meter voor de uitvoering van deze werkwijze.
MX346798B (es) * 2011-11-22 2017-03-31 Halliburton Energy Services Inc Ensamble de salida que tiene un desviador de fluido que desplaza la trayectoria de un fluido hacia dos o mas trayectorias.
NL2008577C2 (nl) * 2012-03-30 2013-10-01 Fusion Electronics B V Inrichting voor het bepalen van een massadebiet van een fluã¯dum in een kanaal.

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2016182432A1 *

Also Published As

Publication number Publication date
NL2015207A (nl) 2016-11-21
WO2016182432A1 (fr) 2016-11-17
NL2015207B1 (nl) 2017-01-26

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