EP0555837B1 - Dispositif anti-retour - Google Patents

Dispositif anti-retour Download PDF

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Publication number
EP0555837B1
EP0555837B1 EP93102087A EP93102087A EP0555837B1 EP 0555837 B1 EP0555837 B1 EP 0555837B1 EP 93102087 A EP93102087 A EP 93102087A EP 93102087 A EP93102087 A EP 93102087A EP 0555837 B1 EP0555837 B1 EP 0555837B1
Authority
EP
European Patent Office
Prior art keywords
pressure
intermediate chamber
differential pressure
differential
stabilizer
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.)
Expired - Lifetime
Application number
EP93102087A
Other languages
German (de)
English (en)
Other versions
EP0555837A1 (fr
Inventor
Rudolf Dipl.-Ing. Vollmer
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.)
Garrett Motion SARL
Honeywell GmbH
Original Assignee
Honeywell 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 Honeywell GmbH filed Critical Honeywell GmbH
Publication of EP0555837A1 publication Critical patent/EP0555837A1/fr
Application granted granted Critical
Publication of EP0555837B1 publication Critical patent/EP0555837B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/106—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using two or more check valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/108—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves having an aerating valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y10T137/2557—Waste responsive to flow stoppage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/3149—Back flow prevention by vacuum breaking [e.g., anti-siphon devices]
    • Y10T137/3185—Air vent in liquid flow line
    • Y10T137/3294—Valved
    • Y10T137/3331—With co-acting valve in liquid flow path

Definitions

  • the present invention relates to a system separator according to the preamble of claim 1.
  • a system separator is a safety valve that is installed in the drinking water pipe and is intended to prevent backflow from the non-drinking water side.
  • the system separator consists in a known manner of two series-connected check valves and a differential pressure-controlled drain valve, which vent an intermediate chamber between the two check valves.
  • the task of the drain valve is to ventilate the intermediate chamber when the pressure drops below a certain differential pressure between the inlet side and the intermediate chamber, in order to prevent backflow from the outlet side to the inlet side.
  • Such a system separator is known from EP0 320 700.
  • a system separator 10 which has, in a known manner, two check valves 16 and 18 connected in series between an inlet 12 and an outlet 14.
  • the space 20 (intermediate chamber) between the two check valves 16 and 18 can be vented through a drain valve 22, wherein the drain valve 22 is controlled by the differential pressure between the inlet 12 and the intermediate chamber 20 by a diaphragm 26 biased by a spring 24 to the pressure at Inlet 12 compares with the pressure in the intermediate chamber 20 to, when falling below a predetermined pressure of z. B. 0.5 bar to vent the intermediate chamber 20 by opening the drain valve 22.
  • the pressures of the medium, generally water, at the inlet 12, in the intermediate chamber 20 and at the outlet 14 can be connected to pressure gauges 28, 30 and 32 at pressure gauges 34, 36 and 38.
  • a differential pressure stabilizer 40 is arranged in the intermediate chamber 20.
  • differential pressure stabilizer 40 can also be integrated into the housing of the system separator 10.
  • the differential pressure stabilizer 40 consists of a cylindrical housing 42 which is provided on one side with an inlet 44 and on the other side with an outlet 46.
  • a membrane 52 is clamped between the two halves 48, 50 of the housing 42 as a pressurized displaceable member.
  • This pressurized displaceable member can also be predetermined by a bellows or a piston.
  • the membrane 52 is stretched between the two halves of a spring plate 54 and a spring 56 is supported between the spring plate 54 and the housing 42.
  • the spring plate 54 On the side facing away from the spring 56, the spring plate 54 has a circumferential sealing edge 58 which is provided for cooperation with an elastic sealing ring 60 inserted into the housing 42.
  • the inlet 44 of the differential pressure stabilizer 40 can be connected to the inlet 12 of the system separator 10 and the outlet 46 of the differential pressure stabilizer 40 is connected to the intermediate chamber 20 of the system separator 10.
  • the preloaded spring 56 determines the level of the differential pressure at which the diaphragm 52 moves.
  • the preload of the spring 56 is to be selected so that this differential pressure lies above the required response pressure of the drain valve 22 and below the opening pressure for the first check valve 16.
  • the drain valve 22 remains closed until the pressure difference between inlet 12 and intermediate chamber 20 becomes smaller than the response pressure of the drain valve 22. This case always occurs when pressure fluctuations in the supply network lead to pressure drops on the inlet side 12 of the system separator 10 lead. Since the intermediate chamber 20 is limited by two tightly closing non-return valves 16, 18, the pressure in the intermediate chamber 20 remains unaffected by pressure fluctuations on the input side 12 until the predetermined limit of z. B. 0.5 bar is reached and the drain valve 22 opens so that there is again a differential pressure above the predetermined limit.
  • the pressure in the intermediate chamber 20 of the system separator 10 follows the pressure fluctuations on the Input side 12.
  • the differential pressure remains essentially constant.
  • the installation of the differential pressure stabilizer 40 makes the inlet pressure the reference variable for the intermediate chamber pressure.
  • the function of the differential pressure stabilizer 40 is effective with appropriate dimensioning of the membrane down to the negative pressure range on the inlet side.
  • FIG. 3 schematically shows a modified embodiment of the system separator 10 according to the invention, in which a pressure limiter 62 is arranged in addition to the differential pressure stabilizer 40.
  • This pressure limiter consists of a diaphragm 64 pressurized on one side, which is acted upon by the static pressure in the intermediate chamber 20 and is pressed against a prestressed spring 66 into a final position when a predetermined static pressure in the intermediate chamber 20 is exceeded, the chamber having the spring 66 over a vent, not shown, is connected to the atmosphere.
  • the diaphragm 64 moves through the pre-tensioned spring 66 and builds up the pressure in the intermediate chamber, which then leads to ventilation of the intermediate chamber.
  • the response range can be limited to a minimum pressure on the input side, which is in the overpressure range.
  • Fig. 4 shows a diagram which shows the pressure curve over time.
  • p 1 the pressure on the inlet side 12 is designated and p 2 denotes the pressure in the intermediate chamber 20.
  • p 2 denotes the pressure in the intermediate chamber 20. It can be seen that a constant differential pressure p between the inlet side 12 and the intermediate chamber 20 is predetermined by the arrangement of the differential pressure stabilizer 40. If the static pressure in the intermediate chamber 20 threatens to drop below a predetermined minimum pressure P min , the pressure limiter 62 takes effect and maintains this minimum pressure.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Safety Valves (AREA)
  • Control Of Fluid Pressure (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Debugging And Monitoring (AREA)
  • Seal Device For Vehicle (AREA)
  • Cyclones (AREA)

Claims (5)

  1. Dispositif anti-retour (10), constitué de deux éléments anti-refluement (16, 18), montés l'un à la suite de l'autre dans le sens d'écoulement d'un fluide, et d'une soupape d'échappement (22), qui purge dans l'atmosphère une chambre intermédiaire (20) située entre les deux éléments anti-refluement et qui est commandée par la différence de pression entre le côté entrée (12) du dispositif anti-retour et la chambre intermédiaire (20), caractérisé par l'adjonction d'un stabilisateur de pression différentielle (40) entre le côté entrée (12) et la chambre intermédiaire (20), le stabilisateur de pression différentielle (40) se composant d'un organe (52) mobile sous étanchéité dans un boîtier (42), organe qui, d'un côté, est précontraint par un ressort (56) et par la pression dans la chambre intermédiaire et qui, de l'autre côté, est sollicité par la pression du fluide sur le côté entrée (12), pour, en cas de fluctuations de la pression sur le côté entrée, modifier par son déplacement le volume de la chambre intermédiaire et maintenir ainsi la pression différentielle constante.
  2. Dispositif anti-retour selon la revendication 1, caractérisé en ce que le stabilisateur de pression différentielle (40) est disposé entre deux tubulures de prise de pression (28, 30).
  3. Dispositif anti-retour selon la revendication 1, caractérisé en ce que le stabilisateur de pression différentielle (40) est intégré dans le boîtier du dispositif anti-retour (10).
  4. Dispositif anti-retour selon l'une des revendications 1 à 3, caractérisé par l'adjonction d'un limiteur de pression (62), constitué par un autre organe (64) déplaçable sous étanchéité dans un boîtier, organe qui est sollicité, d'un côté, par la pression du fluide dans la chambre intermédiaire (20) et, de l'autre côté, par un ressort (66).
  5. Dispositif anti-retour selon la revendication 4, caractérisé par la réunion du stabilisateur de pression différentielle (40) et du limiteur de pression (62) dans un boîtier.
EP93102087A 1992-02-14 1993-02-11 Dispositif anti-retour Expired - Lifetime EP0555837B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4204386 1992-02-14
DE4204386A DE4204386C2 (de) 1992-02-14 1992-02-14 Systemtrenner

Publications (2)

Publication Number Publication Date
EP0555837A1 EP0555837A1 (fr) 1993-08-18
EP0555837B1 true EP0555837B1 (fr) 1996-10-23

Family

ID=6451687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102087A Expired - Lifetime EP0555837B1 (fr) 1992-02-14 1993-02-11 Dispositif anti-retour

Country Status (5)

Country Link
US (1) US5363875A (fr)
EP (1) EP0555837B1 (fr)
AT (1) ATE144571T1 (fr)
CA (1) CA2088748C (fr)
DE (2) DE4204386C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2617904A1 (fr) 2012-01-18 2013-07-24 Honeywell Technologies Sarl Ensemble anti-retour
EP3415825A1 (fr) 2017-06-14 2018-12-19 Honeywell Technologies Sarl Dispositif de remplissage de circuit thermique

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0671514A3 (fr) * 1993-11-02 1996-03-06 Desch Kurt Michael Installation sanitaire d'alimentation et de trop-plein combinés pour baignoires avec inverseur de douche et disconnecteur intégré.
DE19902574C1 (de) 1999-01-22 2000-10-05 Rudolf Vollmer Systemtrenner
FR2803009B1 (fr) * 1999-12-24 2002-03-22 Watts Eurotherm Dispositif de controle de l'ecoulement d'un fluide au moyen d'une soupape differentielle
ES2178915B1 (es) 2000-03-07 2004-04-16 Plasticos Mondragon, S.A. Valvula hidraulica de membrana perfeccionada, para regulacion del caudal de fluidos.
EP1334761A1 (fr) * 2002-02-07 2003-08-13 Bucher Guyer AG Dispositif de filtration à écoulement tangential et vanne d'étranglement anti-refoulement pour une telle installation et méthode de fonctionnement d'une telle installation
AU2003282978A1 (en) * 2002-10-18 2004-05-04 Watts Regulator Co. Spill-resistant relief valve
DE10325388A1 (de) * 2003-05-30 2004-12-30 Iat Ingolstadt Armaturen Technologie Gmbh Systemtrenner
US7293576B2 (en) * 2005-03-28 2007-11-13 Potter Electric Signal Company Single-piece manifold with reduced pressure arrangement
DE102005031422C5 (de) 2005-07-04 2012-09-27 Hans Sasserath & Co. Kg Systemtrenner
DE102010021805A1 (de) 2009-05-27 2011-06-16 Desch, Kurt Michael, Dipl.-Ing. (FH) Drei-Kammer-Systemtrenngerät BA, mit flächengleichen Steuer- und, mit Mittel- und gegenüberliegend mit Hinterdruck beaufschlagtem Federbodenkolben, dessen Feder II die Druckdifferenzen stabilisiert
DE202009013771U1 (de) 2009-10-02 2010-07-22 Hidde, Axel R., Dr. System- oder Rohrtrenner in Modulbauweise als Patrone
DE102010052837A1 (de) 2010-03-03 2011-12-22 Kurt Michael Desch Bei Rückdruck selbstumschaltendes Hydraulisches Drei-Kammer-Systemtrenngerät mit Differenzdruckstabilisierung
DE102010024786A1 (de) 2010-06-23 2011-12-29 Honeywell Technologies S.A.R.L. Systemtrenner
DE102011013718A1 (de) 2011-03-11 2012-09-13 Honeywell Technologies Sarl Systemtrenner
WO2013141795A1 (fr) * 2012-03-19 2013-09-26 Ab Durgo Agencement de vanne
DE102012019437A1 (de) 2012-10-04 2014-04-10 Honeywell Technologies Sarl Systemtrenner
EP2801672B1 (fr) 2013-05-07 2017-06-28 Honeywell Technologies Sarl Séparateur de système
DE202016104221U1 (de) 2016-08-01 2016-10-10 Honeywell Technologies Sarl Systemtrenner
US11521757B2 (en) * 2018-05-25 2022-12-06 Curtiss-Wright Flow Control Corporation Inadvertent actuation block valve for a small modular nuclear reactor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996962A (en) * 1976-03-19 1976-12-14 Rockwell International Corporation Backflow preventer and relief valve assembly
US4232704A (en) * 1978-03-28 1980-11-11 Amtrol Inc. In line back flow preventer
EP0084754B2 (fr) * 1982-01-26 1991-12-11 SOCLA SA Société dite Disconnecteur pour des canalisations hydrauliques
DE3247325C2 (de) * 1982-12-21 1990-02-15 Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt Rohrtrenner
DE3520250A1 (de) * 1985-06-05 1986-12-11 Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt Rohrtrenner
EP0305557B1 (fr) * 1987-08-31 1990-05-02 Honeywell-Braukmann GmbH Armature d'écoulement pour de l'eau potable
DE3742207A1 (de) * 1987-12-12 1989-06-22 Lang Apparatebau Gmbh Rueckflussverhinderer, insbesondere zum einbau in trinkwasserleitungen
ATE66989T1 (de) * 1988-04-26 1991-09-15 Honeywell Braukmann Gmbh Armatur.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2617904A1 (fr) 2012-01-18 2013-07-24 Honeywell Technologies Sarl Ensemble anti-retour
EP3415825A1 (fr) 2017-06-14 2018-12-19 Honeywell Technologies Sarl Dispositif de remplissage de circuit thermique

Also Published As

Publication number Publication date
US5363875A (en) 1994-11-15
CA2088748C (fr) 1997-03-18
ATE144571T1 (de) 1996-11-15
DE4204386C2 (de) 1994-01-20
EP0555837A1 (fr) 1993-08-18
DE4204386A1 (de) 1993-08-26
CA2088748A1 (fr) 1993-08-15
DE59304227D1 (de) 1996-11-28

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