EP2857684A1 - Appareil de gestion de l'écoulement d'un liquide - Google Patents

Appareil de gestion de l'écoulement d'un liquide Download PDF

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Publication number
EP2857684A1
EP2857684A1 EP14187425.5A EP14187425A EP2857684A1 EP 2857684 A1 EP2857684 A1 EP 2857684A1 EP 14187425 A EP14187425 A EP 14187425A EP 2857684 A1 EP2857684 A1 EP 2857684A1
Authority
EP
European Patent Office
Prior art keywords
gauge
holder body
casing
central portion
channel
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.)
Granted
Application number
EP14187425.5A
Other languages
German (de)
English (en)
Other versions
EP2857684B1 (fr
Inventor
Virgilio Martinucci
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.)
Trevitech Srl
Original Assignee
Trevi Engineering Srl Unipersonale
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 Trevi Engineering Srl Unipersonale filed Critical Trevi Engineering Srl Unipersonale
Publication of EP2857684A1 publication Critical patent/EP2857684A1/fr
Application granted granted Critical
Publication of EP2857684B1 publication Critical patent/EP2857684B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump

Definitions

  • the present invention relates to devices for managing the flow of liquids, and in particular apparatus for managing the flow of domestic water, preferably associated with domestic water distribution networks and the like.
  • the invention relates to the structure of an apparatus for managing the flow of a liquid, comprising an outer casing defining an inner chamber provided with an inlet and an outlet for the pressurized liquid, and more preferably to an apparatus to control start-up and shut-down of a pump of a water distribution network, wherein the inlet of said chamber is operatively as-sociable with the discharge of a pump and the outlet is operatively connected to the water network.
  • the invention relates to an apparatus such as the one described in the Italian patent application FI2012A000079 , the contents of which must be considered incorporated herein.
  • the object of the present invention is to produce an apparatus for managing the flow of a liquid, preferably but not exclusively an apparatus to control start-up and shut-down of a pump of a water distribution network, which is easy to use, structurally simple, can be rapidly assembled and allows a certain degree of flexibility in production.
  • the invention relates to an apparatus for managing the flow of a liquid, comprising an outer casing defining an inner chamber provided with an inlet and an outlet for the liquid; this apparatus is characterized in that it comprises on said outer casing a system for fitting a gauge for detecting and/or measuring from the outside the pressure in said inner chamber; this system being provided with a channel for fluid communication between said chamber and the outside of said casing, and fixing means adapted to fix to said outer casing (11), alternatively to one another,
  • the apparatus can leave the factory with the gauge already associated with the casing, or without a gauge but with an element that closes the outer chamber with seal and thus allows the device to operate also without a gauge.
  • it is simply sufficient to remove the closing element and position the gauge-holder body with the gauge inserted therein.
  • the apparatus comprises means adapted to control start-up and shut-down of a pump of a water distribution network, wherein said inlet of said chamber is operatively associable with the discharge of a pump and said outlet is operatively connected to the water network;
  • this apparatus comprises a system for detecting and/or measuring the flow of water through said outlet adapted to emit a signal to start the pump upon reaching a preset flow threshold value, and a device for detecting and/or measuring the pressure in the chamber adapted to emit a signal to start the pump of the network upon reaching a preset value defined "restart pressure";
  • the gauge is adapted to detect and/or measure the pressure in the chamber and to make it visible to the operator.
  • the casing comprises an open central portion in which there is defined at least part of said chamber and a closing bell element of said central portion; this bell element is reversibly fixed to the central portion; the gauge-holder body is blocked between the central portion and the bell element.
  • the fixing means comprise a guide provided on said central portion and a sliding part complementary to said guide, provided on said gauge-holder body; the gauge-holder body is abutting against a first stop present on the central portion and, on the opposite side to the first stop with respect to its extension, is abutting against a second stop defined on said bell element.
  • the bell element comprises a flange for fixing to a counter-flange defined on said central portion of casing; this counter-flange comprises a plurality of peripheral bushings for housing respective threaded elements for connection with the flange of the bell element; the guide for the gauge-holder body is provided on a said bushing.
  • the fixing means can exclude the aforesaid guide and consist, for example, of a simple fixing by means of fixing screws that pass through the gauge-holder body and engage on the casing.
  • the gauge-holder body comprises a base on which to fix the gauge, from which there extends a duct inside which the sensitive portion of said gauge is inserted; this duct is in direct communication with said channel; from the base there extends a lateral wall defining a compartment for housing the gauge, provided with a front opening toward the outside at the display of the gauge; preferably, there is present an annular gasket at the front opening of said compartment.
  • the chamber is delimited by an elastically deformable wall adapted to react to the pressure of the liquid in the chamber; preferably there is present an elastic spring acting between said wall and the bottom of said bell element.
  • this apparatus is an apparatus to control start-up and shut-down of a pump of a water distribution network, such as the one described in the Italian patent application FI2012A000079 , which is referred to herein and must be considered incorporated in the present application.
  • This apparatus 10 comprises an outer casing 11 defining an inner chamber 12 provided with an inlet 13 and an outlet 14 for the liquid.
  • the inlet is, for example, operatively associable with the discharge of a pump (not shown in the figures), while the outlet 14 is, for example, operatively connected to the water network (not shown in the figures).
  • This apparatus 10 in practice comprises means adapted to control start-up and shut-down of a pump of a water distribution network, i.e.
  • a system for detecting and/or measuring the flow of water through the outlet 14 (for example a flow meter or a flow switch, not shown in the figures) adapted to emit a signal to start the pump upon reaching a preset flow threshold value, and a device adapted to detect and/or measure the pressure in the chamber 12, such as a pressure switch (not shown in the figures), that allows the emission of a signal to start the pump of the network upon reaching a preset value defined "restart pressure", as described, for example, in the aforesaid patent application no. FI2012A000079 .
  • one side of the chamber 12 is delimited by an elastically deformable wall 19 (of which only a small portion is visible in Figs. 4 , 8 and 9 ) adapted to react to the pressure of the liquid in the chamber.
  • an elastic spring 20 (of which only some coils are visible in Fig. 4 ) acting between the deformable wall 19 and the bottom of the first bell element 11 B, as shown schematically in Fig. 4 .
  • a body (not visible in the figures) that moves with the same wall 19 in a given direction and is movable along this direction as a function of the pressure value.
  • the pressure switch is capable of determining the pressure in the chamber 12 based on the position of this body in the chamber.
  • a system for fitting a gauge 15, to allow the pressure in the inner chamber 12 to be detected and/or measured from the outside is present.
  • This system makes it possible to have a gauge already associated with the apparatus when it leaves the factory, or to install it simply and rapidly subsequently, if required.
  • This gauge 15 is in fluid communication with the inside of the chamber 12, by means of at least one channel 17 passing through the casing and exiting therefrom, better described below.
  • the fitting system when the gauge 15 is not associated with the apparatus, i.e. with the casing, there is present at least one closing element 31 of this channel 17, so that the apparatus can operate even when the gauge is not applied, as better explained below.
  • the fitting system is provided with fixing means to fix the gauge (or more precisely, a gauge-holder body) or this closing element to the casing, naturally alternatively to one another, in the sense that either the gauge or the closing element of the channel 17 is present.
  • the gauge 15 is mounted on a gauge-holder body 16, which is fixed to the casing 11 by means of the aforesaid reversible fixing means, illustrated in detail below.
  • said channel 17 that allows fluid communication between the chamber 12 with an operating area 18 in the gauge-holder body 16 associated with the sensitive portion 15A of the gauge 15, so that the gauge is capable of sensing the pressure of the liquid in the chamber.
  • the casing 11 comprises a central portion 11 A, open, in which there is defined at least part of the chamber 12, and a first bell element 11 B for closing this open central portion 11 A.
  • the chamber 12 is delimited by the elastically deformable wall 19 (of which only a small portion is visible in Figs. 4 , 8 and 9 ) adapted to react to the pressure of the liquid in the chamber.
  • an elastic spring 20 (of which only a few coils are visible in Fig. 4 ) acting between the deformable wall 19 and the bottom of the first bell element 11 B, as shown schematically in Fig. 4 .
  • the first bell element 11 B comprises a flange 21, provided with first through bushings 21 A, for fixing to a counter-flange defined on the central portion 11A of the casing, which comprises a plurality of second peripheral bushings 22 for housing respective threaded elements 23 for connection with the flange 21 of the first bell element 11 B.
  • the casing 11 comprises a second further bell element 11C that is placed over the first bell element 11 B and is fixed to this latter.
  • the gauge-holder body 16 comprises a base 16A on which to arrange the gauge 15. From this base 16A there extends a duct 16B inside which the sensitive portion 15A of the gauge 15 is inserted (for example this portion is externally threaded for coupling to the counter-threaded end part of the duct).
  • the duct 16B is in direct communication with the channel 17. From the base 16A there extends a lateral wall 16C that defines a compartment 16D for housing the gauge 15, provided with a front opening toward the outside at the display of the gauge. At the front opening of the compartment 16D there is present an annular gasket 16E that creates a seal between edge of the front opening and gauge.
  • the lateral wall 16C is fixed to the base 16A by means of elastic coupling formed by at least one elastically deformable tooth 16F and a respective housing seat 16G.
  • the duct 16B comprise a first section 16B' in which there is present the sensitive portion 15A of the gauge, and a second section 16B", preferably orthogonal to the first section 16B', aligned with the axis of the channel 17 for communication with the chamber 12.
  • the reversible fixing means for fixing the gauge-holder body 16 to the casing 11 preferably comprise a guide 24 provided on the central portion 11 A of the casing 11 and a sliding part 25 complementary to the guide 24, provided on the gauge-holder body 16, so that the gauge-holder body is inserted in the guide 24 and blocked thereon.
  • the gauge-holder body 16 is blocked between the central portion 11A and the first bell element 11B; more in particular, the gauge-holder body 16 is abutting against a first stop 26 present on the central portion 11 A and on the opposite side against a second stop 27 defined on the first bell element 11 B.
  • the guide 24 is produced on a bushing 22' of the counter-flange of the central portion 11 A of the casing 11.
  • the bushing 22' has, for a section thereof, a mushroom shaped, or undercut, portion 22A, that allows coupling with the complementary sliding part 25 of the gauge-holder body.
  • the direction of sliding of the gauge-holder body 16 on the bushing 22' is transverse (preferably orthogonal) to the direction of the fluid communication channel 17 between chamber 12 and operating area 18 in the gauge-holder body.
  • seal means such as preferably an annular gasket 28.
  • the fixing means can exclude the aforesaid guide and consist, for example, of a simple fixing by means of fixing screws that pass through the gauge-holder body and engage on the casing.
  • Figs. 8 and 9 show a variant of the apparatus, in which the gauge-holder body 16 is not blocked between the stop 26 of the casing and the stop 27 of the bell element, ma is blocked between the stop 26 and a threaded blocking member 30, preferably a screw, passing through the gauge-holder body 16, preferably through the sliding part 25, and orthogonally entering said central portion 11A of the casing.
  • this member 30 blocks at least the movement of the gauge-holder body 16 in the direction of sliding on the guide.
  • this removable closing element 31 is preferably a threaded element that comprises an enlarged head and a threaded stem that extends from said head and is adapted to couple with the thread obtained on the walls of the channel 17.
  • this head abuts against the seal means 28 arranged on the central portion around the inlet of the channel 17.
  • the shape of the gauge-holder body differs from the one previously illustrated.
  • the gauge-holder body 16 does not comprise the base 16A and the compartment 16D, but the gauge is screwed directly with the sensitive portion into the first section 16B' of the duct 16B.
  • the gauge 15 is fixed to the base 16A of the gauge-holder body.
  • the lateral wall 16C is coupled to the base 16A, interposing the annular gasket 16E between gauge and opening edge of the housing compartment.
  • the gauge-holder body 16 with the gauge 15 is then made to slide with the sliding part 25 on the guide 24 defined on the guide bushing 22', until it abuts on the first stop 26 obtained on the central portion 11A of the casing.
  • the first bell element 11B is then arranged so that its flange 21 is on the counter-flange on the central portion 11 A of the casing 11. By doing so the sliding part 25 of the gauge-holder body 16 is blocked between central portion 11 A of the casing and the flange 21 of the first bell element 11 B.
  • the threaded elements, such as screws 23, are then inserted in the bushings 22, 21 A, making the bell element integral with the central portion.
  • the second bell element 11C is arranged.
  • This structure of apparatus allows very easy and rapid assembly, low production costs and low risks of separation between gauge and apparatus. Moreover, it allows the apparatus to be produced without a gauge and the gauge to be associated subsequently.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Measuring Fluid Pressure (AREA)
  • Sampling And Sample Adjustment (AREA)
EP14187425.5A 2013-10-04 2014-10-02 Appareil de gestion de l'écoulement d'un liquide Active EP2857684B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000231A ITFI20130231A1 (it) 2013-10-04 2013-10-04 "apparecchio per la gestione del flusso di un liquido"

Publications (2)

Publication Number Publication Date
EP2857684A1 true EP2857684A1 (fr) 2015-04-08
EP2857684B1 EP2857684B1 (fr) 2021-11-03

Family

ID=49683845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14187425.5A Active EP2857684B1 (fr) 2013-10-04 2014-10-02 Appareil de gestion de l'écoulement d'un liquide

Country Status (3)

Country Link
EP (1) EP2857684B1 (fr)
ES (1) ES2905402T3 (fr)
IT (1) ITFI20130231A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0819851A2 (fr) * 1996-07-19 1998-01-21 GARDENA Kress + Kastner GmbH Dispositif de commande pour une pompe d'alimentation ou similaire
US5738495A (en) * 1995-02-02 1998-04-14 Carmignani; Claudio Device for contolling the water pressure and flow in a water supply unit
WO1998036339A1 (fr) * 1997-02-13 1998-08-20 Hydroservice S.R.L. Dispositif de regulation informatique proportionnel et auto-reglable pour pompe a eau
DE10311365A1 (de) * 2002-06-11 2004-01-15 Wu, Scott, Ta Li Pumpe mit demontierbarem Druckmesser

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6305416B1 (en) * 1997-06-09 2001-10-23 Flexcon Industries Actuator valve for pressure switch for a fluidic system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5738495A (en) * 1995-02-02 1998-04-14 Carmignani; Claudio Device for contolling the water pressure and flow in a water supply unit
EP0819851A2 (fr) * 1996-07-19 1998-01-21 GARDENA Kress + Kastner GmbH Dispositif de commande pour une pompe d'alimentation ou similaire
WO1998036339A1 (fr) * 1997-02-13 1998-08-20 Hydroservice S.R.L. Dispositif de regulation informatique proportionnel et auto-reglable pour pompe a eau
DE10311365A1 (de) * 2002-06-11 2004-01-15 Wu, Scott, Ta Li Pumpe mit demontierbarem Druckmesser

Also Published As

Publication number Publication date
EP2857684B1 (fr) 2021-11-03
ITFI20130231A1 (it) 2015-04-05
ES2905402T3 (es) 2022-04-08

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