EP2564101A1 - Unité soupape comportant un dispositif détecteur destiné à surveiller la position d'un obturateur sur son trajet de travail par rapport à un siège de soupape correspondant, en particulier pour le passage d'un gaz à travers un appareil compteur de gaz - Google Patents

Unité soupape comportant un dispositif détecteur destiné à surveiller la position d'un obturateur sur son trajet de travail par rapport à un siège de soupape correspondant, en particulier pour le passage d'un gaz à travers un appareil compteur de gaz

Info

Publication number
EP2564101A1
EP2564101A1 EP11715705A EP11715705A EP2564101A1 EP 2564101 A1 EP2564101 A1 EP 2564101A1 EP 11715705 A EP11715705 A EP 11715705A EP 11715705 A EP11715705 A EP 11715705A EP 2564101 A1 EP2564101 A1 EP 2564101A1
Authority
EP
European Patent Office
Prior art keywords
plug
path
magnetic
valve unit
pair
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Withdrawn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
EP11715705A
Other languages
German (de)
English (en)
Inventor
Michele Bortoliero
Luca Peron
Teodora Plaian
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.)
Metersit Srl
Original Assignee
Metersit Srl
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 Metersit Srl filed Critical Metersit Srl
Publication of EP2564101A1 publication Critical patent/EP2564101A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/0033—Electrical or magnetic means using a permanent magnet, e.g. in combination with a reed relays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/0041—Electrical or magnetic means for measuring valve parameters
    • 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
    • G01F15/005—Valves

Definitions

  • the present invention relates to a valve unit with a sensor device for monitoring the position of a plug with respect to a corresponding valve seat, having the features described in the preamble of Claim 1 which is the principal claim.
  • the invention lies particularly, but not exclusively, within the field of valve units which are intended to control the supply of gas in gas metering apparatus, and which are therefore designed for remote operation, typically with reduced energy consumption by the actuators used.
  • valve units which are intended to control the supply of gas in gas metering apparatus, and which are therefore designed for remote operation, typically with reduced energy consumption by the actuators used.
  • valve unit having the aforementioned features is described in Italian patent application PD2009A000257.
  • the precise determination of the position of the plug on its operating path is essential for the purpose of monitoring the closed or open position of the valve seat, in order to control the operation of the meter correctly to allow the flow of gas or shut it off according to the various specified operating conditions.
  • the object of the invention is to improve the aforesaid functions by providing a valve unit having a more sensitive position sensor device such that the position of the plug can be detected more precisely.
  • Figure 1 is a schematic view in axial section of a valve unit made according to the present invention.
  • Figure 2 is a schematic view on an enlarged scale of a detail of the invention shown in Figure 1, and
  • Figure 3 is a view corresponding to that of Figure 2, in a variant embodiment of the detail depicted.
  • the number 1 indicates the whole of a valve unit made according to the invention.
  • This unit is positioned in a gas flow conduit, indicated by 2, and comprises a valve seat 3 located between an inlet section and an outlet section of the conduit (not shown), which are formed, for example, in a gas meter, to which the invention is particularly applicable.
  • valve seat 3 and the corresponding plug 4 are mounted coaxially with each other in an axial direction indicated by X, along which the operating path of the plug from and towards the corresponding valve seat lies.
  • the plug 4 is fixed to an actuator rod, indicated by 5, which is connected for operation to a motor 6 which can impart a translational movement to the rod along the axis X.
  • the number 7 indicates a return spring acting between the plug 4 and a static part of the valve unit, this spring tending to cause the plug to close the valve seat.
  • valve unit For the monitoring of the position of the plug 4 along the axial direction X, the valve unit is provided with a Hall effect sensor device, indicated as a whole by 10, as will be explained more fully in the remainder of the description.
  • the sensor 10 is conveniently of a magnetic type and comprises a first part 10a including the sensing element 11 of the sensor, fixed to the rod 5 of the actuator by means of a support 12, and a second magnetic part 10b, adapted to interact with the sensing element 11 of the sensor.
  • the part 10b is fixed to the static structure of the valve unit and comprises a first and a second pair of magnetic dipoles, indicated by 14 and 15 respectively, each pair comprising a first and a second dipole ( 14a, 14b; 15a, 15b) and each dipole having opposite polarities (North-South) which are adjacent to each other.
  • the dipoles of each pair 14, 15 are interconnected by a transition zone, represented schematically by a line 16, as shown in the drawings.
  • the pairs of magnetic dipoles 14, 15 are positioned in alignment with each other along a direction parallel to the axial direction X along which the path of the plug is defined.
  • the transition zones (16) of the pairs of dipoles are located in respective positions indicated by A and B in the drawings which correspond to the ends of the path reached in one direction and in the opposite direction by the plug in its movement from and towards the valve seat.
  • the arrangement of the pairs of magnetic dipoles 14 and 15 is such that the magnetic charges of two of the dipoles which belong to separate pairs and are located in positions adjacent to and facing each other have the same polarity, as is shown clearly in Figures 2 and 3 on an enlarged scale, these figures relating to corresponding configurations which are alternative to each other.
  • This arrangement enables the position of the plug, which is moved between the opposing transition zones of the dipoles, to be monitored with high precision, owing to the interaction of the sensing element 11 of the sensor with the zone in which there is an inversion of the magnetic field generated by each of the pairs of dipoles 14 and 15. This makes it possible to determine the open or closed position of the valve seat in a highly accurate way.
  • the sensor device 10 of the invention can obviously be provided in valve units having different configurations, such as that described in patent application PD2009A000257, incorporated herein by reference as a variant embodiment with which the sensor device 10 described above can be associated.
  • the accuracy of reading of the sensor is a function of the accuracy with which the positions on the path to be detected are associated with the transition zones of each pair of magnetic dipoles.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measuring Volume Flow (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)

Abstract

L'invention porte sur une unité soupape destinée à commander la fourniture d'un gaz combustible, en particulier à travers un compteur de gaz, du type qui comprend un obturateur (4) associé à un siège de soupape correspondant (3), l'obturateur étant fixé à une tige de commande (5) qui est guidée mobile par un moyen actionneur en un mouvement qui s'éloigne ou se rapproche du siège de soupape (3) sur un trajet de travail défini par au moins deux positions extrêmes opposées, et un dispositif détecteur de position (10) du type à effet Hall, associé à l'obturateur (4) pour le travail et servant à détecter la position de ce dernier le long du trajet par rapport à une structure statique de l'unité soupape, le détecteur (10) comprenant une première partie fixée à la structure statique et une deuxième partie fixée à la tige de commande (5) de l'obturateur. Le dispositif détecteur à effet Hall (10) est du type magnétique et l'une des première et seconde parties comprend un élément sensible du détecteur (10), alors que l'autre des parties comprend une première et une seconde paire (14, 15) de dipôles magnétiques, chaque paire comprenant un premier et un second dipôle magnétique (14a, 14b; 15a, 15b), chacun d'une polarité opposée, séparés par une zone de transition correspondante. Les zones de transition correspondantes sont positionnées dans des positions extrêmes correspondantes du trajet, et les charges magnétiques des dipôles de la première et de la seconde paire (14, 15), qui sont adjacentes l'une à l'autre et se font mutuellement face, le long le trajet, ont la même polarité.
EP11715705A 2010-04-28 2011-04-20 Unité soupape comportant un dispositif détecteur destiné à surveiller la position d'un obturateur sur son trajet de travail par rapport à un siège de soupape correspondant, en particulier pour le passage d'un gaz à travers un appareil compteur de gaz Withdrawn EP2564101A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD2010A000134A IT1399781B1 (it) 2010-04-28 2010-04-28 Gruppo valvolare con dispositivo sensore per il controllo della posizione di un otturatore nella corsa operativa relativamente ad una corrispondente sede di valvola, in particolare per l'erogazione di gas attraverso un apparecchio contatore per gas.
PCT/EP2011/056293 WO2011134855A1 (fr) 2010-04-28 2011-04-20 Unité soupape comportant un dispositif détecteur destiné à surveiller la position d'un obturateur sur son trajet de travail par rapport à un siège de soupape correspondant, en particulier pour le passage d'un gaz à travers un appareil compteur de gaz

Publications (1)

Publication Number Publication Date
EP2564101A1 true EP2564101A1 (fr) 2013-03-06

Family

ID=43064544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11715705A Withdrawn EP2564101A1 (fr) 2010-04-28 2011-04-20 Unité soupape comportant un dispositif détecteur destiné à surveiller la position d'un obturateur sur son trajet de travail par rapport à un siège de soupape correspondant, en particulier pour le passage d'un gaz à travers un appareil compteur de gaz

Country Status (3)

Country Link
EP (1) EP2564101A1 (fr)
IT (1) IT1399781B1 (fr)
WO (1) WO2011134855A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2856444T3 (en) 2012-05-25 2017-10-30 Mueller Int Llc POSITION INDICATOR FOR VALVES
FR3028911B1 (fr) * 2014-11-26 2017-04-28 Grdf Dispositif et kit de detection de l'etat d'un clapet de securite d'une piece de raccord entre conduites de gaz

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493216A (en) * 1993-09-08 1996-02-20 Asa Electronic Industry Co., Ltd. Magnetic position detector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10054308A1 (de) * 2000-11-02 2002-06-13 Conti Temic Microelectronic Aktor zur elektromagnetischen Ventilsteuerung mit zwei Elektromagneten
DE10304551A1 (de) * 2003-02-04 2004-08-12 Mann + Hummel Gmbh Stellelement mit Lageerkennung
DE102007062099B4 (de) * 2007-12-21 2015-07-16 Mahle International Gmbh Positionserfassungseinrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493216A (en) * 1993-09-08 1996-02-20 Asa Electronic Industry Co., Ltd. Magnetic position detector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011134855A1 *

Also Published As

Publication number Publication date
IT1399781B1 (it) 2013-05-03
ITPD20100134A1 (it) 2011-10-29
WO2011134855A1 (fr) 2011-11-03

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