EP0189499B1 - Déconnecteur de tuyau - Google Patents

Déconnecteur de tuyau Download PDF

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Publication number
EP0189499B1
EP0189499B1 EP85100921A EP85100921A EP0189499B1 EP 0189499 B1 EP0189499 B1 EP 0189499B1 EP 85100921 A EP85100921 A EP 85100921A EP 85100921 A EP85100921 A EP 85100921A EP 0189499 B1 EP0189499 B1 EP 0189499B1
Authority
EP
European Patent Office
Prior art keywords
piston
valve
closing
impinged
pipe separator
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
Application number
EP85100921A
Other languages
German (de)
English (en)
Other versions
EP0189499A1 (fr
Inventor
Rudolf 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.)
Honeywell Braukmann GmbH
Original Assignee
Honeywell Braukmann 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8193263&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0189499(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Honeywell Braukmann GmbH filed Critical Honeywell Braukmann GmbH
Priority to AT85100921T priority Critical patent/ATE27323T1/de
Priority to DE8585100921T priority patent/DE3560188D1/de
Priority to EP85100921A priority patent/EP0189499B1/fr
Publication of EP0189499A1 publication Critical patent/EP0189499A1/fr
Application granted granted Critical
Publication of EP0189499B1 publication Critical patent/EP0189499B1/fr
Expired 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

Definitions

  • the present invention relates to a pipe separator according to the preamble of claim 1.
  • Such a pipe separator or backflow preventer can e.g. can be found in DE-P5 27 51 468 or DE-OS 33 09 315.
  • the pipe separator according to DE-OS 33 09 318 differs from the pipe separator according to DE-P5 27 5-1 468 by the arrangement of a booster piston connected to a sealing piston, which are acted upon in the same way by the pressure of the inflowing medium that an increased closing force with regard to the locking piston results.
  • Pipe separators are fittings that are installed in a water line and are intended to prevent non-drinking water from flowing back into the drinking water supply line. If there is a risk that non-drinking water can flow back into the drinking water supply line or be sucked back, the pipe separator must block access to the drinking water line and at the same time vent the downstream system to the atmosphere. In order to prevent backflow with certainty, this ventilation must be initiated at a distance of 0.5 bar before the critical pressure is reached.
  • the pipe separator be installed with a suitable circuit so that it normally remains in the disconnected position and only goes into the flow position when water is actually required.
  • This mode of operation is normally achieved by installing a shut-off valve in the supply line to the pipe separator and a relief or blow-off valve between the shut-off valve and the pipe separator. When the shut-off valve is closed, the relief valve must open at the same time. This means that the pipe section between the shut-off valve and the pipe separator is depressurized and the sealing piston of the pipe separator moves into its disconnected position.
  • shut-off valve When the shut-off valve is closed, the relief valve must open at the same time. This means that the pipe section between the shut-off valve and the pipe separator is depressurized and the sealing piston of the pipe separator moves into its disconnected position.
  • additional costly, automatically operating shut-off valves are required.
  • the upstream shut-off valve built into the main line represents an additional flow resistance and thus reduces the pressure available after the pipe separator.
  • oxygen is introduced through the necessary ventilation of the pipe section between the shut-off valve and pipe separator, which can lead to faults in the downstream system.
  • FIG. 1 shows the installation of a pipe separator 10 of a known type, as it is to be installed in the so-called "installation type 2" according to DVGW worksheet W503.
  • This requires that the pipe separator only go into the flow position when water is actually drawn.
  • measures are taken so that the pipe separator goes into the disconnected position at least once a day.
  • This can e.g. done by installing a timer in an electrical control circuit.
  • the control circuit then excites a shut-off valve 12 connected into the supply line to the pipe separator 10 at certain points in time, a blow-off valve 14 simultaneously energized venting the pipe string between the pipe separator 10 and the shut-off valve 12.
  • This known system has the disadvantages mentioned at the outset.
  • the pipe separator 10 "modified according to the invention has a cross-shaped housing 16, in which a first valve seat 22 is arranged between an inlet connector 18 and an outlet connector 20. Coaxial to this first valve seat 22 there is a second valve seat offset downwards 24.
  • a tubular sealing piston 26, which is closed at the top, is displaceable in both valve seats 22, 24, which have the same diameter, and forms a non-return valve with the first valve seat 22 and a drain valve with the second valve seat 24.
  • the drain valve 24, 26 opens into a drain port 28, under which a collecting funnel 30 is arranged.
  • a loading spring 34 is supported, which acts on the sealing piston 26 in such a way that it is moved into a position closing the non-return valve 22, 26.
  • a check valve known type 36 is arranged, which prevents a drainage of the subsequent pipeline when the backflow preventer valve 22, 26 is closed, but allows its venting.
  • a relief piston 40 which is guided in a sealed manner in the housing 16, is connected to the locking piston 26 via a rod 38.
  • An inwardly projecting collar in the housing 16 limits the displacement of the closure piston 26, rod 38 and relief piston 40 upwards.
  • the space above the relief piston 40 is connected to the inlet pressure P1 via a first line 42 and to the atmosphere via a second line 44.
  • the liquid located in the space above the relief piston 40 can be discharged via the line 44 and a collecting funnel 46 arranged underneath.
  • a solenoid valve 48 is seated on the cross-shaped housing 16.
  • the solenoid valve 48 has a rocker arm 52 which is mounted about a pivot point 50 and which carries on one side a closing body 54 which interacts with the two lines 42 and 44 in order to form a three-way valve .
  • the rocker arm 52 is biased by a spring 56 in a position closing the line 42.
  • a winding 60 arranged in a U-shaped pole shoe 58 acts upon its excitation on the rocker arm 52 and pivots it in order to close the line 44 leading into the atmosphere and to release the line 42 connected to the inlet pressure P1 .

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)
  • Check Valves (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Claims (4)

1. Déconnecteur de tuyau, destiné notamment à être monté dans une canalisation d'eau domestique, comportant un piston de fermeture (26) pouvant se déplacer dans un corps de vanne, relié à un piston supplémentaire (40), les deux pistons étant chargés par la pression du fluide entrant et le piston de fermeture (26) coopérant, en fonction de sa position de déplacement, au choix avec deux sièges de soupape (22, 24) disposés l'un derrière l'autre, de manière à fermer une vanne formant dispositif anti-retour et ouvrir une vanne de décharge ou ouvrir la vanne formant le dispositif anti-retour et fermer la vanne de décharge, caractérisé en ce que le piston supplémentaire (piston de décharge 40) est chargé par la pression (PI) du fluide sur sa face voisine du piston de fermeture (26) et que la face arrière du piston supplémentaire (40) peut être raccordée par l'intermédiaire d'une vanne à 3 voies (48) au choix à la pression (p1) du fluide ou à l'atmosphère.
2. Déconnecteur de tuyau selon la revendication 1, caractérisé en ce que les deux pistons (26,40) possèdent à peu près la même surface active.
3. Déconnecteur de tuyau selon la revendication 1, caractérisé en ce que la vanne à 3 voies (48) est montée sur le corps (16) du piston de décharge (49).
4. Déconnecteur de tuyau selon la revendication 3, caractérisé en ce que la vanne à 3 voies (48) est réalisée sous la forme d'une électrovanne.
EP85100921A 1985-01-30 1985-01-30 Déconnecteur de tuyau Expired EP0189499B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT85100921T ATE27323T1 (de) 1985-01-30 1985-01-30 Rohrtrenner.
DE8585100921T DE3560188D1 (en) 1985-01-30 1985-01-30 Tube disconnector
EP85100921A EP0189499B1 (fr) 1985-01-30 1985-01-30 Déconnecteur de tuyau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85100921A EP0189499B1 (fr) 1985-01-30 1985-01-30 Déconnecteur de tuyau

Publications (2)

Publication Number Publication Date
EP0189499A1 EP0189499A1 (fr) 1986-08-06
EP0189499B1 true EP0189499B1 (fr) 1987-05-20

Family

ID=8193263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100921A Expired EP0189499B1 (fr) 1985-01-30 1985-01-30 Déconnecteur de tuyau

Country Status (3)

Country Link
EP (1) EP0189499B1 (fr)
AT (1) ATE27323T1 (fr)
DE (1) DE3560188D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658852A (en) * 1985-10-21 1987-04-21 Zvi Weingarten Backflow preventer apparatus for fluid flow lines
DE3626825A1 (de) * 1986-08-08 1988-02-18 Gruenbeck Josef Wasseraufb Rohrtrennung mit einer sperreinrichtung und eine ueberwachungseinrichtung fuer die sperreinrichtung
DE3762532D1 (de) * 1987-08-31 1990-06-07 Honeywell Braukmann Gmbh Trinkwasser-durchflussarmatur.
ZA892960B (en) * 1988-04-22 1989-12-27 Burnetta Pty Ltd Backflow prevention valve
DE4108865A1 (de) * 1991-03-19 1992-09-24 Schubert & Salzer Gmbh & Co In Rohrtrenner
DE102007030654A1 (de) * 2007-07-02 2009-01-08 Hans Sasserath & Co. Kg Rohrtrenneranordnung
DE202014100172U1 (de) 2014-01-16 2015-04-20 Viega Gmbh & Co. Kg Sicherungsvorrichtung zum Schutz einer Trinkwasser-Installation gegen Rückfließen von gebrauchtem oder verunreinigtem Wasser

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2751468C2 (de) * 1977-11-18 1984-06-28 Honeywell-Braukmann GmbH, 6950 Mosbach Rückflußverhinderer
DE2849825C2 (de) * 1978-11-17 1984-05-10 Lang Apparatebau GmbH, 8227 Siegsdorf Trinkwasser-Durchflußarmatur mit in eine Trinkwasserversorgungsleitung eingebautem Durchflußwächter
DE3126212A1 (de) * 1981-07-03 1983-01-20 Lang Apparatebau GmbH, 8227 Siegsdorf Vorrichtung zum schutz von trinkwasserleitungen gegen rueckfliessendes brauchwasser
DE3309318A1 (de) * 1983-03-16 1984-09-20 Lang Apparatebau GmbH, 8227 Siegsdorf Rueckflussverhinderer, insbesondere fuer trinkwasserleitungen
DE3309861C2 (de) * 1983-03-18 1986-01-02 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Vorrichtung zum Absperren und Belüften einer Rohrleitung

Also Published As

Publication number Publication date
EP0189499A1 (fr) 1986-08-06
ATE27323T1 (de) 1987-06-15
DE3560188D1 (en) 1987-06-25

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