WO2024033518A1 - Débitmètre et système d'installation doté d'un débitmètre - Google Patents

Débitmètre et système d'installation doté d'un débitmètre Download PDF

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Publication number
WO2024033518A1
WO2024033518A1 PCT/EP2023/072272 EP2023072272W WO2024033518A1 WO 2024033518 A1 WO2024033518 A1 WO 2024033518A1 EP 2023072272 W EP2023072272 W EP 2023072272W WO 2024033518 A1 WO2024033518 A1 WO 2024033518A1
Authority
WO
WIPO (PCT)
Prior art keywords
impeller
flow meter
insert
sleeve
flow
Prior art date
Application number
PCT/EP2023/072272
Other languages
German (de)
English (en)
Inventor
Jürgen JOHANN
Michael Hofbauer
Anton Maierhofer
Original Assignee
Bwt Holding Gmbh
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 Bwt Holding Gmbh filed Critical Bwt Holding Gmbh
Publication of WO2024033518A1 publication Critical patent/WO2024033518A1/fr

Links

Classifications

    • 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
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
    • G01F1/115—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device
    • 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
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
    • 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
    • G01F15/14—Casings, e.g. of special material
    • 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
    • G01F15/18—Supports or connecting means for meters
    • G01F15/185—Connecting means, e.g. bypass conduits

Definitions

  • the invention relates to a flow meter.
  • the invention relates to a flow meter for a water pipe.
  • the invention further relates to an installation system with a flow meter.
  • a water meter installation system includes an installation console in which the water meter is installed.
  • the water meters known from practice have a larger diameter than the water pipe to which they are connected. This is due, among other things, to the rather complicated structure. In order to keep the flow losses in the water meter as low as possible, only a partial flow of water is usually passed over an impeller, which is usually flowed against radially.
  • the invention is based on the object of providing a flow meter, in particular designed as a water meter, which can be installed particularly easily and conveniently. It is a particular object of the invention to provide a water meter which can be installed in an existing pipeline. Summary of the invention
  • the object of the invention is already achieved by a flow meter, by an impeller for a flow meter according to one of the independent claims and by a fluid line provided with the flow meter.
  • the invention relates to a flow meter.
  • the flow meter is designed in particular for the water pipe of an installation system.
  • a volume flow is measured via the flow meter, in particular by converting it into a measurement signal.
  • the flow meter according to the invention can also be used for other fluids, namely both liquids and gases.
  • the flow meter includes an insert for a pipe.
  • the insert is designed in particular in such a way that it can be used in a commercially available water pipe, in particular a plastic pipe. But the flow meter can also be used with most plastic/metal composite pipes.
  • the pipe can be designed in any way, in particular the flow meter can be located in a piece of pipe, which is part of a connection head for a filter candle.
  • the insert includes a bearing for an impeller.
  • the impeller itself includes a ferromagnetic sensor.
  • the ferromagnetic transmitter can in particular be designed as a permanent magnet.
  • the ferromagnetic sensor can be used to detect the speed of the impeller without contact on the outer wall of the pipe.
  • the impeller has axial flow.
  • a compact design can be achieved by inserting an axially flow-through impeller into the flow.
  • the insert can be inserted together with the impeller into an existing water pipe on site.
  • the impeller preferably has a diameter which approximately corresponds to the inside diameter of the tube, and is therefore only spaced from the inside wall of the tube by a gap.
  • a flow meter in particular a water meter, can thus be provided which causes only small flow losses.
  • the insert can in particular be jammed in the pipe.
  • the insert preferably comprises a single bearing on which the impeller is mounted.
  • the insert through which the fluid can flow axially, comprises an axis in the middle which extends axially in the direction of the impeller.
  • the impeller in turn comprises a bearing bush and is preferably attached to the axle of the insert.
  • the ferromagnetic encoder is designed as a magnet, in particular as a ring magnet.
  • the impeller includes a ring magnet, with the inside of the ring magnet being flowed through.
  • the ring magnet is preferably arranged in front of the blades of the impeller in relation to the flow direction.
  • the impeller can also include a single or two opposing ferromagnetic sensors.
  • the ferromagnetic transmitter can in particular be designed as a ring segment. This makes it particularly easy to place on the inner wall of the wheel.
  • the ferromagnetic sensor is preferably inserted into a sleeve of the impeller, in particular into the bottom of a sleeve with a central fluid passage.
  • a measuring coil can be attached to the outer wall of the pipe. This transmits the induced pulsating signal, which is caused by the rotating ring magnet, to a display device.
  • the frequency of the pulsating signal is approximately proportional to the speed of the impeller. The speed is in turn approximately proportional to the flow.
  • the measurement signal can be forwarded wirelessly to an external unit, for example to a mobile device.
  • the impeller comprises vanes which have an inflow surface.
  • the inflow surface is inclined relative to the central axis of the impeller.
  • the ratio of the length of the inflow surface to the diameter of the impeller can be between 1/3 and 3/1, preferably 1/1.5 and 1.5/1.
  • the impeller therefore has comparatively elongated wings.
  • the wings are preferably relatively little inclined.
  • the blades of the impeller extend over less than 60% of the cross-sectional area, in particular 10 to 50% of the cross-sectional area, preferably 30 to 50% of the cross-sectional area.
  • an individual blade of the impeller preferably extends over less than 90°, preferably less than 50°, in particular over 10 to 50°, preferably over 30 to 40° of the circumference.
  • the impeller can comprise several blades, in particular 3 to 6 blades, preferably 4 blades.
  • the blades of the impeller are inclined 5 to 30°, preferably 10 to 20°, to the central axis.
  • the inclination of the wings is therefore relatively small and the wings only take up part of the cross-sectional area in an axial plan view.
  • an impeller can be provided which, on the one hand, has low flow resistance, but on the other hand starts up quite quickly due to the quite long and therefore large blades.
  • a flow meter can be provided which has a start-up limit of less than 50 1/h, in particular from 10 to 50 1/h.
  • the insert can have an outside diameter between 5 and 50 mm, in particular between 10 and 25 mm.
  • the flow meter according to the invention is therefore suitable for insertion into existing pipelines of an installation system.
  • the impeller can comprise a base, which is at least partially designed as a ring with a central fluid passage.
  • the blades of the impeller follow the fluid passage.
  • the impeller comprises an impeller which is arranged in a sleeve.
  • the impeller includes the blades and is inserted into a sleeve.
  • the impeller can be clamped and/or locked in a sleeve.
  • the sleeve with the impeller is flowed through by the fluid and rotates. The sleeve is therefore part of the impeller.
  • the impeller can be arranged partly in the rotating sleeve and partly in the insert. In one embodiment of the invention, the impeller is inserted into a sleeve together with the ring magnet.
  • the sleeve may include a central fluid passage.
  • the fluid passage can be conical at least in sections.
  • it can be a fluid passage, behind which, based on the direction of flow, is the ring magnet and then a base, which is part of an impeller that includes the blades.
  • the impeller comprises an impeller, a ring magnet and a sleeve.
  • the sleeve can be essentially cup-shaped to accommodate the impeller, but can include a central fluid passage.
  • the fluid passage of the ring magnet Based on the direction of flow, this is followed by the fluid passage of the ring magnet and then a fluid passage of the impeller, from which the vanes extend axially towards the insert.
  • the blades of the impeller can each be connected to the base of the impeller via a base piece, with a free passage being present between the base pieces. This further reduces the flow resistance.
  • the vanes can be connected to one another via the bearing bushing.
  • the bearing bush extends through both the impeller and the sleeve.
  • the impeller can have a through hole and the sleeve can have a blind hole.
  • the invention further relates to an impeller which is designed for the flowmeter described above.
  • the impeller can therefore in particular have all the features that were previously described in connection with the impeller.
  • the impeller can in particular comprise an impeller, a ring magnet and a sleeve, with the ring magnet and impeller being arranged one behind the other in the sleeve.
  • the invention further relates to a fluid line, in particular a water line of an installation system, which comprises flow meters described above.
  • the flow meter can sit in the fluid line, in particular in a pipe, and, based on the direction of flow, a connecting piece for the fluid line can be arranged in front of the flow meter.
  • the impeller can have an outside diameter that corresponds to at least 0.7 times, preferably at least 0.8 times, in particular 0.8 to 0.99 times the inside diameter of the tube.
  • the impeller is preferably only spaced from the inner wall of the tube by a gap, in particular a gap of less than 1 mm.
  • the impeller includes a ring with a central fluid passage from which the blades of the impeller extend.
  • the ring can be formed in particular by the base and/or the sleeve.
  • the cross-sectional area of the fluid passage formed in this way corresponds to at least 80%, in particular 80 to 120%, of the inner cross-sectional area of the connecting piece.
  • the impeller preferably does not reduce the cross-sectional area of the water pipe at any point in relation to the connecting piece.
  • connecting pieces are used to connect the individual pipe sections, which are also referred to in particular as so-called fittings.
  • fittings are connected to the pipeline by pressing.
  • the connectors include a sleeve that is inserted into the end of the pipe.
  • the cross section of the cable is therefore smallest in the area of the connecting pieces.
  • the water meter according to the invention can be installed in the pipe system in such a way that the cross section is not further reduced compared to the connecting piece.
  • the invention further relates to a connection head for a filter candle, which comprises at least one flow meter described above.
  • connection head includes a housing with an input and an output.
  • connection head is intended to be installed inline into an existing water pipe.
  • connection head can in particular have a suspension for attachment to a mounting bracket.
  • connection head includes a connection piece for a filter candle.
  • the connecting piece can in particular be designed as a thread into which the filter candle is screwed with a corresponding thread.
  • the invention relates in particular to a filter candle with an input and an output, which are designed as coaxially arranged channels.
  • a channel can be arranged in the middle.
  • a ring channel extends around the centrally arranged channel.
  • connection head has complementary channels for a sealing connection to the filter candle, in particular also a central channel around which an annular channel extends coaxially.
  • a bypass can be arranged in the housing of the connection head, which can be opened and closed via an actuator.
  • a bypass which leads the water completely past the filter candle, can therefore be integrated into the head of the filter candle.
  • a flow meter can be arranged in a bypass channel and in an input channel and/or output channel.
  • the ratio of the flow rates can be used to calculate the amount of water that flows through the filter candle. This is preferably included in the calculation of the service life of the filter candle.
  • the flow meter is easier to place in a bypass channel than in a channel that comes from the filter cartridge and leads to the filter cartridge.
  • This channel is preferably designed as an annular channel. With a compact design, the bypass channel provides a sufficiently long piece of pipe to place the flow meter.
  • Fig. 1 is a perspective view of an embodiment of a flow meter according to the invention.
  • Figures 2 and 3 are perspective views of the impeller.
  • Fig. 4 shows the components of the impeller in a perspective view.
  • Fig. 5 is a side view of the impeller.
  • Figures 6 and 7 are perspective views of the impeller.
  • Figures 8 and 9 are perspective views of the sleeve of the impeller.
  • Fig. 10 and Fig. 11 are perspective views of the insert and axis.
  • Fig. 12 is a central longitudinal section of the water meter.
  • Fig. 13 is a cross section of the water meter in the area of the wings.
  • Fig. 14 shows a side view of a pipe in which a flow meter according to the invention is installed.
  • Fig. 15 is a central longitudinal section of the flow meter installed in the pipe.
  • Fig. 16 is a cross section of a connection head equipped with two flow meters according to the invention.
  • Fig. 17 shows an alternative embodiment with magnet segments instead of one
  • Fig. 1 is a perspective view of an embodiment of a flow meter according to the invention, which is designed as a water meter 1.
  • the water meter includes an insert 100, which can be inserted, in particular clamped, into an on-site pipeline.
  • An impeller 200 is rotatably mounted on the insert 100 and, in this exemplary embodiment, protrudes into the insert 100 with the wings 231.
  • the impeller 200 is partially circular cylindrical and has a smaller diameter than the insert 100.
  • the impeller 200 When inserted, the impeller 200 is spaced from the inner wall of the pipe by a gap.
  • the impeller 200 includes a central passage 211 through which the water flows through the water meter 1, except for the remaining amount of water that flows laterally through the gap.
  • Fig. 2 is a perspective view of the impeller 200.
  • the impeller 200 comprises a sleeve 210 into which an impeller 230 is placed, in particular clamped or locked.
  • the impeller 230 partially protrudes from the sleeve 210.
  • the wings 231 are inclined relative to the central axis of the impeller 230.
  • the wings 231 are connected to one another via the bearing bush 232.
  • the bearing bush 232 includes a through hole 234 which leads to the sleeve 210.
  • Fig. 3 is another perspective view of the impeller 200.
  • the central passage 211 of the sleeve 210 which is located at the front on the flow side, can be clearly seen in this view.
  • the passage 211 has a conical side wall 212. This improves the inflow of water and reduces the flow resistance.
  • Fig. 4 shows the components of the impeller 200 in an exploded view.
  • the sleeve 210 is arranged at the front in relation to the flow direction.
  • a ring magnet 220 which has a central passage 221, is initially inserted into the sleeve 210.
  • the impeller 230 is arranged behind the ring magnet.
  • the water first flows into the sleeve 210, passes through the passage 221 of the ring magnet 220 and then drives the impeller 230, so that the entire impeller 200, consisting of sleeve 210, impeller 230 and ring magnet 220, moves.
  • Fig. 5 is a side view of the impeller 230.
  • the impeller includes a base 235, from which the wings 231 extend via a base piece 236.
  • the wings 231 are at least partially inclined relative to the central axis a, in this exemplary embodiment a is between 10 and 20°.
  • the wings 231 including the base piece 236 have a length of 1.
  • the ratio of the length 1 to the diameter d of the impeller 230 is preferably between 1.5/1 and 1/1.5.
  • an impeller 230 and thus an impeller can be provided, which has a very low flow resistance and at the same time responds even at low flow, i.e. begins to rotate.
  • FIG. 6 and 7 are perspective views of the impeller 230.
  • the impeller 230 includes an annular base 235, which can be used in particular to connect to the sleeve.
  • the wings 231 follow the direction of flow behind the base.
  • the base pieces 236 of the wings 231 do not extend in the radial direction to the axis.
  • the wings 231 are connected to one another via the bearing bush 232, which is circular cylindrical.
  • FIG 8 and 9 are perspective views of the sleeve 210.
  • the bearing bush 213 is located at the rear, as shown in Fig. 8.
  • the bearing bush 213 includes a blind hole 214 in which the axis of the insert ends when assembled.
  • the bearing bush 213 is connected to the remaining sleeve 210, i.e. the outer part of the sleeve 210, via arms 215.
  • webs 216 extend radially to the inner wall of the sleeve.
  • the bearing bush 213 is conical at the front in relation to the direction of flow. This reduces the flow resistance.
  • Fig. 10 shows the insert 100 including the axis 110.
  • the insert includes a sleeve 101 which can be inserted into the tube.
  • a central axle mount 102 is connected to the sleeve 101 via webs 103.
  • the water can flow through between the webs 103.
  • the axis 110 can, for example, be formed integrally with the insert 100, for example as a plastic injection molded part. Furthermore, the axis 110 can also be designed as an inserted, in particular injected, metal part.
  • FIG. 11 shows a perspective view of the side of the insert 100 facing away from the flow.
  • spacers 104 are provided on the webs 103, which connect the bearing bush 102 to the remaining sleeve.
  • Fig. 12 is a central longitudinal section of the water meter 1. The direction of flow is marked with an arrow. It can be seen that first the ring magnet 220 and then the impeller 230 are inserted, in particular pressed, into the sleeve 210.
  • the sleeve 210 initially comprises a central passage through which the water then flows to the wings 231 via the openings 217, which are present between the arms 215.
  • the water After passing the wings 231, the water leaves the water meter 1 via the insert 100.
  • the impeller 200 is pushed onto the axle 110.
  • the bearing bush is formed by the through hole 234 of the impeller 230 and the blind hole 214 of the sleeve 210.
  • an insert 240 At the end of the blind hole there is an insert 240.
  • This can be designed, for example, as a sapphire plate.
  • Fig. 13 is a cross section of the water meter in the area of the impeller.
  • the wings 231 already begin in the area of the sleeve 210.
  • the wings 231 take up less than half of the cross-sectional area.
  • Fig. 14 shows how the water meter according to the invention is now installed in a pipe 10.
  • the pipe 10 can be a pipe of an installation system which is connected via a connecting piece 20.
  • a measuring sensor 30 is attached to the outside of the tube 10, which converts the signal induced by the magnet, in particular the ring magnet, into a signal which represents the volume flow.
  • This signal can, for example, be passed on wirelessly to a mobile device 40 and/or an evaluation device.
  • the water meter can be installed in both vertical and horizontal pipes.
  • Fig. 15 is a central longitudinal section of the water meter 1 installed in the pipe 10.
  • the connecting piece 20 is pushed into the pipe 10 and includes a seal 21.
  • the passage 211 of the water meter 1 is at no point on the water meter 1 smaller than the internal cross section of the connecting piece 20.
  • the water flows into the pipe 10 via the connecting piece 20, passes the water meter 1 and leaves it via the insert 100.
  • connection head 60 for a filter candle which includes two of the flow meters la, lb described above for determining the amount of water flowing over the filter candle.
  • a flow meter la, 1b is arranged in each of the channels coming from the input 61 and a bypass bypass channel 63.
  • the water flows from the inlet 61 to the outlet 62 of the connection head 1, with the water temporarily or a partial amount of water being passed through the filter candle via the channel 64.
  • the water flowing through the filter candle flows via the ring channel 65 to the outlet.
  • the ratio of the flow rates through the flow meters la, 1b can be used to calculate the amount of water that flows through the filter candle. This is preferably included in the calculation of the service life of the filter candle.
  • the flow meters la, 1b are each inserted into a piece of pipe.
  • connection head 60 The placement of the flow meter 1b in the bypass ensures a compact design of the connection head 60.
  • FIG 17 shows the sleeve 210 of the impeller according to an alternative embodiment.
  • two opposing magnet segments 222 are inserted into the bottom of the sleeve 210.
  • the magnet segments 222 are arranged radially next to the fluid passage 211.
  • the magnet segments 222 can be designed as a ring segment whose curvature corresponds to the adjacent outer and/or inner wall of the sleeve 210.
  • the water meter can be designed in accordance with the exemplary embodiment described above.
  • the invention made it possible to provide a compact water meter that can be used in particular in an on-site water pipe.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne un débitmètre, en particulier destiné au tuyau d'eau d'un système d'installation, comprenant un insert destiné à un tuyau. L'insert comprend un support pour une roue à ailettes. La roue à ailettes comprend un capteur ferromagnétique, en particulier un aimant permanent. Le flux à travers la roue est axial.
PCT/EP2023/072272 2022-08-11 2023-08-11 Débitmètre et système d'installation doté d'un débitmètre WO2024033518A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022120305.0 2022-08-11
DE102022120305.0A DE102022120305A1 (de) 2022-08-11 2022-08-11 Durchflussmesser sowie Installationssystem mit einem Durchflussmesser

Publications (1)

Publication Number Publication Date
WO2024033518A1 true WO2024033518A1 (fr) 2024-02-15

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PCT/EP2023/072272 WO2024033518A1 (fr) 2022-08-11 2023-08-11 Débitmètre et système d'installation doté d'un débitmètre

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Country Link
DE (1) DE102022120305A1 (fr)
WO (1) WO2024033518A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770131A (en) * 1954-07-19 1956-11-13 Ray C Sparling Flowmeter
US4241605A (en) * 1979-06-14 1980-12-30 Envirotech Corporation Flowmeter with magnetic coupling
US6311569B1 (en) * 1997-05-23 2001-11-06 SIEBERT & KüHN GMBH & CO. KG Flowmeter having an impeller with a carrier body having a radial opening to a central boring
EP2657656A1 (fr) * 2012-04-27 2013-10-30 SIKA Dr.Siebert & Kühn GmbH & Co. KG. Dispositif destiné à la détermination de la vitesse d'écoulement d'un milieu
EP3674672A1 (fr) * 2018-12-28 2020-07-01 Marquardt GmbH Dispositif de mesure d'écoulement
EP4008844A1 (fr) * 2020-12-04 2022-06-08 Hans Sasserath GmbH & Co. KG. Système de protection contre les fuites

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770131A (en) * 1954-07-19 1956-11-13 Ray C Sparling Flowmeter
US4241605A (en) * 1979-06-14 1980-12-30 Envirotech Corporation Flowmeter with magnetic coupling
US6311569B1 (en) * 1997-05-23 2001-11-06 SIEBERT & KüHN GMBH & CO. KG Flowmeter having an impeller with a carrier body having a radial opening to a central boring
EP2657656A1 (fr) * 2012-04-27 2013-10-30 SIKA Dr.Siebert & Kühn GmbH & Co. KG. Dispositif destiné à la détermination de la vitesse d'écoulement d'un milieu
EP3674672A1 (fr) * 2018-12-28 2020-07-01 Marquardt GmbH Dispositif de mesure d'écoulement
EP4008844A1 (fr) * 2020-12-04 2022-06-08 Hans Sasserath GmbH & Co. KG. Système de protection contre les fuites

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