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WO2000079164A1 - Configuration de regulateur - Google Patents

Configuration de regulateur

Info

Publication number
WO2000079164A1
WO2000079164A1 PCT/AU2000/000699 AU0000699W WO0079164A1 WO 2000079164 A1 WO2000079164 A1 WO 2000079164A1 AU 0000699 W AU0000699 W AU 0000699W WO 0079164 A1 WO0079164 A1 WO 0079164A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
regulator
chamber
valve
diaphragm
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.)
Ceased
Application number
PCT/AU2000/000699
Other languages
English (en)
Inventor
Alexander Bennet Gosling
Ian Gordon Pearson
Simon Jonathan Spence
Ernest Robert Yarwood Smith
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.)
Email Ltd
Original Assignee
Email Ltd
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 Email Ltd filed Critical Email Ltd
Priority to AU52026/00A priority Critical patent/AU5202600A/en
Priority to EP00936566A priority patent/EP1104523A1/fr
Publication of WO2000079164A1 publication Critical patent/WO2000079164A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0675—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever
    • G05D16/0683—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting on the obturator through a lever using a spring-loaded membrane
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1266—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being acted upon by the circulating fluid
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
    • F16K31/165—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a diaphragm
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2086—Control of fluid pressure characterised by the use of electric means without direct action of electric energy on the controlling means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2093—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power
    • G05D16/2095—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power using membranes within the main valve

Definitions

  • the invention relates to a gas supply regulator of the type used for regulating gas supply pressure provided to a commercial or residential premises.
  • Typical gas regulator installations are interposed between the high pressure gas supply and the gas piping of the premises, usually just upstream of the gas meter.
  • the regulator includes a regulator valve which opens when the downstream pressure drops below a predetermined pressure and closes again when that downstream pressure is reached, thereby dropping the high, variable gas pressure of the gas supply pipe to a lower, predetermined pressure for supply to the premises.
  • Conventional regulator arrangements include a spring-biased diaphragm exposed to the downstream gas pressure such that the diaphragm actuates closing of the valve when the force on the diaphragm due to the downstream pressure is above or equal to a threshold valve and the valve opens again when the downstream pressure drops.
  • the spring force in this arrangement is adjustable by a thumb screw or the like, but in order to gain sufficiently accurate pressure regulation a relatively large diaphragm, for example about 15-20cm diameter, is required.
  • the regulator unit as a whole is quite large and, in situations where an electronic gas meter is used, the regulator can be at least as large as the meter itself, making it inconvenient to provide a combined gas meter/regulator unit.
  • a known, though not necessarily commonly known, electric regulator is the Tecno regulator from Hoerbiger-Origa Corp of Illinois, USA. which is designed for applications such as ultrasonic welding or medical equipment.
  • This regulator operates by actuation of a piezo member which controls gas pressure in an actuating chamber continuously vented into the regulator casing.
  • the regulator includes a diaphragm exposed on one side thereof to the pressure in the actuating chamber and on the other side to atmosphere.
  • the piezo member in the Tecno regulator is energised to allow gas flow into the actuating chamber, thus increasing the gas pressure in the actuating chamber and opening the regulator valve.
  • When output pressure exceeds set point the piezo member closes off the gas entry to the actuating chamber, the pressure in that chamber falling due to the continuous venting.
  • the regulator valve closes.
  • the Tecno regulator further includes a pressure relief bypass which will relieve excessive output pressure by opening a passage from the output side of the regulator valve to atmosphere.
  • the Tecno regulator is designed primarily for process control purposes, and has limitations which it is believed would make that regulator unsuitable for regulating energy gas pressure to commercial or residential premises, specifically, the relatively slow response time of the regulator relative to the rapid changes in downstream gas pressure which occur in domestic and commercial situations as appliances are switched on and off, and the frequency with which the Tecno regulator's piezo member would need to be energised if used for this application.
  • the present invention aims to provide a regulator arrangement which overcomes at least some of the above disadvantages.
  • the invention provides a gas supply regulator for reducing a high gas pressure in an upstream region to a lower, regulated pressure in a downstream region
  • the regulator including a regulator valve, actuating means for opening and closing the regulator valve, said actuating means including diaphragm means acted upon by gas pressure in the downstream region such that the regulator valve is opened in response to gas pressure in the downstream region falling below a set point pressure and closed when set point pressure is attained, said diaphragm means further being acted upon by gas pressure in a chamber, and means for introducing gas to the chamber to adjust gas pressure in the chamber so as to adjust said set point pressure.
  • the gas pressure in the chamber provides a force on the actuating means at least partially counteracting the force on the valve from gas pressure in the upstream region.
  • the diaphragm means may include a pair of diaphragms - a first diaphragm situated between the chamber and the downstream region for providing said counteracting force and a second diaphragm exposed to the downstream region to actuate said opening and closing.
  • valve is actuated by a diaphragm operated on by the differential between pressures in the chamber and the downstream region.
  • Fig. 1 is a schematic cross-section of a first embodiment
  • Fig. 2 is a schematic cross-section of a second embodiment
  • Fig. 3 is a schematic cross-section of a third embodiment.
  • the regulator of Fig. 1 includes a gas inlet 12 for connection to a high, variable pressure gas supply, typically 5 to 600kPa, and an outlet 14 for connection to the gas plumbing of the premises for which the regulator is installed.
  • the regulator may also include a filter (not shown) for removing any particles in the gas supply.
  • the gas flow path through the regulator is divided into a high pressure upstream region 16 adjacent the inlet end and a low pressure downstream region 18 adjacent the outlet, by a divider wall comprising a longitudinal wall section 20 with respective half-section walls 22a,22b at either end thereof.
  • the longitudinal wall section has a flow orifice 24 surrounded by a protruding valve seat 26.
  • a valve member 28 has a valve stem 30 carrying an end plate 32 which, when the valve is closed, seals against the valve seat to close off the orifice but is spaced away from the valve seat when the valve is open.
  • the valve member further includes an actuating diaphragm 34 exposed at one side to the gas pressure in the downstream region 18 and at its opposite side to gas pressure in a chamber 36.
  • the chamber has an electronically controlled gas inlet valve 38, such as a silicon microvalve, communicating with the upstream region of the regulator and a gas outlet 40, preferably also an electronically controlled valve but alternatively a bleed hole, leading to the downstream region.
  • the diaphragm 34 forms part of the inner wall of the chamber.
  • the regulator further includes a power supply 39, a microprocessor 42 and a pressure sensor 44 and pressure relief valve 46 located in the downstream region.
  • the microprocessor controls operation of the chamber's inlet and outlet valves 38, 40 and is adapted to receive a signal from pressure sensor 44 and an external communications link (not shown), which may be a hard wired link, or a wireless link such as a mobile telecommunications, inferred, microwave or radio link.
  • this differential pressure increases and the diaphragm moves inwards into the downstream region to cause opening of the valve.
  • the force balance on the diaphragm is sufficient to move the diaphragm and valve member outwards, closing the valve.
  • a signal coding the required valve is sent to the processor 42, which then adjusts the pressure in chamber 36 by controlling valves 38 and 40, by feedback control from pressure sensor 44, until the correct output pressure is detected.
  • This allows accurate setting of the force on the chamber side of diaphragm 34. so that sufficient accuracy of the regulated pressure can be attained using a smaller area diaphragm than that required for the prior art spring-biased regulators. As a result, the regulator can be significantly reduced in size.
  • the rapid response opening and closing of the diaphragm is controlled by the diaphragm 34 responsive to changes in the downstream region pressure, while longer term control of the regulated pressure is effected by control of microvalves 38, 40 to adjust the chamber pressure in response to such factors as longer term fluctuations in the gas supply pressure, which are relatively slow and infrequent.
  • the regulator achieves not only rapid response to changes in demand but reduced power consumption as the electronic adjustment operations of the regulator are actuated less often.
  • the regulator can be used as a remote cut-off or prepayment valve, the processor receiving a signal from the gas supply authority or an attached meter or pre-payment device and opening the chamber outlet valve 40 to equalise the chamber pressure with the downstream pressure.
  • the force on the valve end plate due to high gas pressure in the upstream region will shut the valve.
  • the diaphragm may be biased to the closed position.
  • the chamber inlet valve Upon a further signal from the supply authority or the pre-payment device, the chamber inlet valve will be opened to repressurise the chamber, calibrated as described above to give the required regulator output pressure.
  • FIG. 2 An alternative embodiment shown in Figure 2 has the valve seat 26 and the end plate 32 disposed in the downstream region 18.
  • the valve stem 30 is connected via a pivot arm 33 , pivot point 39 and a diaphragm linkage 35 to the diaphragm 34.
  • Control of the pressure in chamber 36 in response to sensor 44 adjusts the set point for opening and closing of the valve.
  • pressure in the downstream region drops, the closing forces on both the rear of the valve end plate 32 and diaphragm 34 are reduced, the valve opening when the downstream pressure falls below the set point.
  • a third embodiment is shown in Figure 3.
  • actuation of the valve is controlled by a spring-biased diaphragm 52 having one side exposed to the low pressure region 18 and an opposite side exposed to atmospheric pressure in the regulator housing, thus regulating the gauge pressure downstream of the regulator valve.
  • the housing has a bleed hole 54 to atmosphere to help damp movement of the diaphragm 52.
  • the chamber pressure in chamber 36 acts on the chamber diaphragm 34 to substantially balance the force provided by the high pressure region on the end plate 32. In this way, the actuating diaphragm 52 can be small because it does not have to overcome the force created by the high pressure region on the end plate 32. Cut-off and prepayment for this embodiment are achieved by increasing the pressure in the gas chamber 36 to directly urge the valve stem and end plate towards the valve seat to close the valve.
  • the mechanical portion of the regulator that is the diaphragm assembly
  • the electronic control of the chamber pressure provides long term accuracy of the regulated pressure.
  • the diaphragm can therefore be far smaller than in prior art regulators that rely on a large diaphragm to achieve the required accuracy.
  • the chamber valves 38, 40 can be small because they provide longer term control of the regulated pressure and hence do not have to cause rapid pressure changes in the chamber. This has the further advantage that the electronic portion of the regulator has low power consumption.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

L'invention concerne un régulateur d'alimentation de gaz domestique comprenant une vanne de régulation (28) actionnée par diaphragme (34), lequel fonctionne sous l'effet d'une pression correspondant à la zone de pression peu élevée (18) et d'une pression de point de consigne dans une chambre (36). Des vannes électroniques (38, 40) contrôlent la pression de gaz dans la chambre (36). Un microprocesseur (42) règle la pression de point de consigne dans la chambre (36). Selon une variante, la pression qui règne dans la chambre s'oppose aux forces exercées sur la vanne depuis la zone de pression élevée. L'activation du diaphragme assure une grande vitesse de réaction tandis que la pression régnant dans la chambre dépend de fluctuations à long terme.
PCT/AU2000/000699 1999-06-21 2000-06-21 Configuration de regulateur Ceased WO2000079164A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU52026/00A AU5202600A (en) 1999-06-21 2000-06-21 Regulator arrangement
EP00936566A EP1104523A1 (fr) 1999-06-21 2000-06-21 Configuration de regulateur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPQ1111A AUPQ111199A0 (en) 1999-06-21 1999-06-21 Regulator arrangement
AUPQ1111 1999-06-21

Publications (1)

Publication Number Publication Date
WO2000079164A1 true WO2000079164A1 (fr) 2000-12-28

Family

ID=3815301

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/000699 Ceased WO2000079164A1 (fr) 1999-06-21 2000-06-21 Configuration de regulateur

Country Status (3)

Country Link
EP (1) EP1104523A1 (fr)
AU (1) AUPQ111199A0 (fr)
WO (1) WO2000079164A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003064928A1 (fr) * 2002-01-29 2003-08-07 Sit La Precisa S.P.A. Ensemble soupape pour moduler la pression de refoulement d'un gaz
WO2005024537A1 (fr) * 2003-08-29 2005-03-17 Dresser, Inc. Regulation d'un fluide
WO2006003684A1 (fr) * 2004-07-02 2006-01-12 Sit La Precisa S.P.A. Soupape multifonction servant a reguler l'alimentation d'un bruleur en gaz combustible
EP1767841A3 (fr) * 2005-09-23 2009-03-25 Robert Bosch Gmbh Brûleur à gaz d'un appareil de chauffage
ITPD20090257A1 (it) * 2009-09-08 2011-03-09 Sit La Precisa S P A Con Socio Uni Co Gruppo valvolare per il controllo dell'erogazione di un gas combustibile, in particolare per l'erogazione attraverso un apparecchio contatore di gas, e contatore di gas includente detto gruppo valvolare
GB2541386A (en) * 2015-08-14 2017-02-22 Synthotech Ltd Apparatus and method
ES2629485A1 (es) * 2016-02-09 2017-08-10 Giorgio Maracchi Estación de regulación y medición para suministro de gas
WO2020181302A1 (fr) * 2019-03-13 2020-09-17 Innio Jenbacher Gmbh & Co Og Moteur à combustion interne
EP4215786A1 (fr) * 2022-01-21 2023-07-26 Hamilton Sundstrand Corporation Calage de soupape actif

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165372A (en) * 1984-10-02 1986-04-09 Tlv Co Ltd Automatically set pressure reducing valve
JPH07324953A (ja) * 1994-06-02 1995-12-12 Tokyo Gas Co Ltd フルイディック式ガスメータ
JPH09265323A (ja) * 1996-03-29 1997-10-07 Osaka Gas Co Ltd 直動式整圧器
WO1998022737A1 (fr) * 1996-11-20 1998-05-28 PAPIN, Jérôme Vanne de reglage actionnee par un systeme de transfert de flux regulant de petits flux de commande
WO2000020829A1 (fr) * 1998-10-02 2000-04-13 Agl Consultancy Pty Ltd. Debitmetre a regulation de pression

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165372A (en) * 1984-10-02 1986-04-09 Tlv Co Ltd Automatically set pressure reducing valve
JPH07324953A (ja) * 1994-06-02 1995-12-12 Tokyo Gas Co Ltd フルイディック式ガスメータ
JPH09265323A (ja) * 1996-03-29 1997-10-07 Osaka Gas Co Ltd 直動式整圧器
WO1998022737A1 (fr) * 1996-11-20 1998-05-28 PAPIN, Jérôme Vanne de reglage actionnee par un systeme de transfert de flux regulant de petits flux de commande
WO2000020829A1 (fr) * 1998-10-02 2000-04-13 Agl Consultancy Pty Ltd. Debitmetre a regulation de pression

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305381B6 (cs) * 2002-01-29 2015-08-26 Sit S.P.A. Ventilová jednotka pro modulaci výtlačného tlaku plynu
WO2003064928A1 (fr) * 2002-01-29 2003-08-07 Sit La Precisa S.P.A. Ensemble soupape pour moduler la pression de refoulement d'un gaz
WO2005024537A1 (fr) * 2003-08-29 2005-03-17 Dresser, Inc. Regulation d'un fluide
US6917858B2 (en) 2003-08-29 2005-07-12 Dresser, Inc. Fluid regulation
WO2006003684A1 (fr) * 2004-07-02 2006-01-12 Sit La Precisa S.P.A. Soupape multifonction servant a reguler l'alimentation d'un bruleur en gaz combustible
EP1767841A3 (fr) * 2005-09-23 2009-03-25 Robert Bosch Gmbh Brûleur à gaz d'un appareil de chauffage
WO2011029638A1 (fr) * 2009-09-08 2011-03-17 Sit La Precisa S.P.A. Con Socio Unico Unité vanne et compteur de gaz pourvu de ladite unité
RU2528193C2 (ru) * 2009-09-08 2014-09-10 Метерсит Клапанный узел и газомер, включающий в себя указанный клапанный узел
ITPD20090257A1 (it) * 2009-09-08 2011-03-09 Sit La Precisa S P A Con Socio Uni Co Gruppo valvolare per il controllo dell'erogazione di un gas combustibile, in particolare per l'erogazione attraverso un apparecchio contatore di gas, e contatore di gas includente detto gruppo valvolare
GB2541386A (en) * 2015-08-14 2017-02-22 Synthotech Ltd Apparatus and method
ES2629485A1 (es) * 2016-02-09 2017-08-10 Giorgio Maracchi Estación de regulación y medición para suministro de gas
WO2020181302A1 (fr) * 2019-03-13 2020-09-17 Innio Jenbacher Gmbh & Co Og Moteur à combustion interne
US11572847B2 (en) 2019-03-13 2023-02-07 Innio Jenbacher Gmbh & Co Og Internal combustion engine
US12044190B2 (en) 2019-03-13 2024-07-23 Innio Jenbacher Gmbh & Co Og Internal combustion engine
EP4215786A1 (fr) * 2022-01-21 2023-07-26 Hamilton Sundstrand Corporation Calage de soupape actif
US11906067B2 (en) 2022-01-21 2024-02-20 Hamilton Sundstrand Corporation Active valve shimming

Also Published As

Publication number Publication date
AUPQ111199A0 (en) 1999-07-15
EP1104523A1 (fr) 2001-06-06

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