EP0420221B1 - Disconnecteur pour aération et désaération d'un conduit - Google Patents

Disconnecteur pour aération et désaération d'un conduit Download PDF

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Publication number
EP0420221B1
EP0420221B1 EP90118517A EP90118517A EP0420221B1 EP 0420221 B1 EP0420221 B1 EP 0420221B1 EP 90118517 A EP90118517 A EP 90118517A EP 90118517 A EP90118517 A EP 90118517A EP 0420221 B1 EP0420221 B1 EP 0420221B1
Authority
EP
European Patent Office
Prior art keywords
pipe
medium
opening
line
air
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
EP90118517A
Other languages
German (de)
English (en)
Other versions
EP0420221A3 (en
EP0420221A2 (fr
Inventor
Rudolf Winhard
Hermann Sperber
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.)
SCHUBERT & SALZER INGOLSTADT-ARMATUREN GMBH
Original Assignee
Schubert & Salzer Ingolstadt-Armaturen 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 Schubert & Salzer Ingolstadt-Armaturen GmbH filed Critical Schubert & Salzer Ingolstadt-Armaturen GmbH
Publication of EP0420221A2 publication Critical patent/EP0420221A2/fr
Publication of EP0420221A3 publication Critical patent/EP0420221A3/de
Application granted granted Critical
Publication of EP0420221B1 publication Critical patent/EP0420221B1/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

Definitions

  • the invention relates to a pipe separator according to the preamble of claim 1.
  • a pipe separator is known from DE-U-89 05 206.
  • DE-C-33 90 421 and DE-A-35 09 720 pipe separators for separating and venting a pipe are also known. After each disconnection of a pipe separator, air enters the air as a result of the ventilation of the drain line. When the pipe separator is switched to the flow position, this air is trapped in the drain line and, when the medium is removed from the drain line, causes disturbances which are caused, for example, by the expansion of the emerging air.
  • pipe vents are installed in front of the tapping point.
  • a pipe breather arranged in the pipe in front of the extraction point has Especially in the case of pipe separators with a backflow preventer, the disadvantage is that air is sucked into the line through the pipe vent, especially when it is opened quickly at the extraction point. A satisfactory keeping of the drain line and the extraction point of air cannot be achieved with it.
  • the object of the invention is to design a pipe separator in such a way that the disadvantages of the prior art are avoided and in particular the air which has penetrated through the separating process is removed from the drain line of the pipe separator in a safe manner.
  • the backflow preventer ensures that the air which has entered through the separation process is first stowed at this, so that the air flows out through the vent opening before the backflow preventer is opened by the pressure which builds up. It is particularly advantageous if the backflow preventer only opens when a pressure of at least 0.2 bar has built up in the flow direction in front of the backflow preventer. The air is pressurized so that it passes the vent faster. The check valve only opens when the air has already left the drain line. The arrangement of the vent opening directly in front of the backflow preventer pushes the air out of the vent opening particularly reliably. The arrangement of the backflow preventer in the vicinity of the pipe separator means that only a small part of the drain line runs empty and therefore little Air enters the drain line.
  • a pipe vent on the vent opening automatically closes the vent when the air has left the drain line so that no medium can flow out.
  • a simple device ensures that no medium can flow out and that no further throttling of the outflowing air takes place initially after the vent opening.
  • the additional arrangement of a pipe breather on the chamber ensures that no back pressure against the inflowing air can build up in it.
  • the chamber is completely vented, so that no air is sucked back out of the chamber into the line even if there is a strong pressure drop on the discharge side. Unwanted wetting of the surroundings of the pipe separator with liquid is avoided by a device for absorbing splash water which can escape during the venting.
  • a line for discharging the spray water which can advantageously be connected to the spray water discharge line of the pipe separator, the spray water is reliably discharged.
  • a ventilation opening 5 is arranged in the drain line 3 of the pipe separator 1 between the ventilation opening 32 and the backflow preventer 4. This is connected via a connecting line 51 to a chamber 52 which is enclosed by the chamber wall 521.
  • the chamber 52 communicates with an automatic vent 6 through an opening 53.
  • the pipe separator has a drive unit 12 which, via a spring and a piston acted upon by the inflow-side medium pressure, controls the sealing elements 21 and 31 into the flow and ventilation positions.
  • the ventilation opening 32 is closed by the sealing element 31 and the sealing element 21 releases the inflow opening 22 of the outflow line 3.
  • the pipe separator according to the invention works in the transition from the ventilation position to the flow position as follows: After closing the ventilation opening 32 and opening the inflow opening 22, medium flows into the space 13. The trapped air is compressed and through the ventilation opening 5 from the outflow line 3 from the medium that is pushing in pushed out.
  • the backflow preventer which, for example, only releases the flow at an inflow-side pressure of 0.2 bar overpressure, it is achieved that the air first escapes from the vent opening 5 before the backflow preventer opens and releases the flow.
  • the non-return valve In contrast to non-return valves, which only prevent the medium from flowing back, the non-return valve requires the property of opposing an opening resistance to the inflowing medium, which is essential for the function of venting.
  • the property of preventing the medium from flowing back prevents the drain line from draining and thereby reduces the total amount of air that has penetrated into the drain line.
  • the vent opening is closed by a valve, which is, for example, manually operated, after the air outlet in order to prevent the escape of medium.
  • This version is conceivable, for example, for pipe separators with a large nominal diameter, where the separation process only occurs rarely and the transition to the flow position can therefore be monitored.
  • the vent opening 5 is connected to a chamber 52 via a connecting line 51.
  • the chamber 52 is not provided with a vent 6, as shown in Fig. 1, rather the size of the chamber 52 is together with a possible.
  • Existing connection line 51 selected so that the air which has penetrated into the space 13 as a result of the flow position is accommodated therein. The smallest is decisive, e.g. pressure occurring when removing medium, since this causes the largest volume. In order to achieve safe ventilation, the volume of the chamber 52 must be made larger by a safety volume.
  • the chamber 52 is connected to a pipe vent 6 via the opening 53.
  • the air to be pressed by the inflow of the medium through the vent opening 5 can escape through the vent opening 5 from the drain line 3 into the chamber 52 without a flow resistance, for example due to a pipe vent.
  • the air then exits through the pipe breather, as a result of which only a slight counterpressure can build up in the chamber 52, since the air constantly escapes from the chamber.
  • a splash guard 61 is attached, which collects the spray water emerging during the venting and directs it back into the chamber 52 when there is negative pressure or no pressure in the chamber, for example in the ventilation position of the pipe separator.
  • the escaped medium is drained off via the ventilation opening 32 of the pipe separator.
  • the splash guard 61 can also be connected to a line, not shown, which conducts the leaked medium (spray water) directly into the funnel 33 of the pipe separator 1, from where it is discharged as well as the medium escaping during the ventilation process.
  • the pipe separator 2 shows a pipe separator 1 with an automatic control valve 7, as described for example in DE-A-37 03 715, in the disconnected position.
  • the control valve 7 is connected via the connection 71 to the drain line 3, in the flow direction after the backflow preventer 4 and 4 ', also with the inflow line 2 via the line 72 and with the drive unit 12 via the control line 73.
  • the flow position is at this Only maintain the type of pipe separator if there is a lower medium pressure in the flow direction after the backflow preventer 4 than before the pipe separator.
  • the pipe separator of Fig. 2 has a divided drain line 3 'in which a second backflow preventer 4' is arranged.
  • the second backflow preventer 4 ' is used for the removal of small amounts of medium, which are removed via this drain line 3' formed as a bypass.
  • the arranged in the by-pass backflow preventer 4 ' can be designed so that it already opens at a back pressure that is lower than that of the backflow preventer 4. If the by-pass line has a high flow resistance, the air is already out of the Vent 5 escaped before the backflow preventer 4 'opens. The necessary back pressure from the backflow preventer 4 'is usually practically zero.
  • the invention is applicable not only for the shown embodiments of pipe separators, but also for pipe separators, which are controlled, for example, by means of electric solenoid valves or pipe separators with sealing elements which are designed as slides (DE-C-33 90 421) or as one-piece sealing elements.
  • the invention also extends to embodiments in which a plurality of drain lines are assigned to the pipe separator, at least one of which is equipped with a backflow preventer and a vent opening.

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)
  • Separating Particles In Gases By Inertia (AREA)
  • External Artificial Organs (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Physical Water Treatments (AREA)
  • Check Valves (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Claims (10)

  1. Disconnecteur comportant un conduit d'arrivée (2) et un conduit de départ (3) pour un fluide, et un organe d'obturation (21) pour séparer le conduit d'arrivée et le conduit de départ, ainsi qu'une vanne d'aération (31,32) disposée en aval de l'organe d'obturation (21) dans le sens d'écoulement du fluide, pour assurer l'aération du conduit de départ, un dispositif d'interdiction de reflux (4,4') étant prévu en aval de la vanne d'aération dans le conduit de départ pour empêcher l'écoulement en retour du fluide dans le conduit de départ, caractérisé en ce qu'il comporte dans le conduit de départ (3), entre l'orifice d'écoulement (22) commandé par l'organe d'obturation (21) et débouchant dans le conduit de départ (3) et le dispositif anti-retour (4,4') prévu pour empêcher le reflux du fluide, un orifice de purge d'air (5) séparé de la soupape d'aération (31,32).
  2. Disconnecteur selon la revendication 1, caractérisé en ce que le dispositif anti-retour (4,4') est disposé dans la canalisation de départ (3) à proximité du disconnecteur (1).
  3. Disconnecteur selon la revendication 1 ou 2, caractérisé en ce que l'orifice de purge d'air (5) est disposé immédiatement en amont de la vanne anti-retour (4,4') dans le sens d'écoulement du fluide.
  4. Disconnecteur selon l'une au moins des revendications 1 à 3, caractérisé en ce qu'un système de purge d'air (6) du conduit est raccordé à l'orifice de purge d'air (5).
  5. Disconnecteur selon l'une au moins des revendications 1 à 4, caractérisé en ce qu'une chambre (52) raccordée à l'orifice de purge d'air (5) est prévue pour recevoir l'air qui sort par l'orifice de purge d'air (5).
  6. Disconnecteur selon la revendication 5, caractérisé en ce que le volume de la chambre (52) correspond au moins à la quantité d'air soumise à la pression du fluide et introduite dans la chambre par suite de la manoeuvre d'aération du conduit de départ (3).
  7. Disconnecteur selon la revendication 5 ou 6, caractérisé en ce que la chambre (52) possède un orifice (53) auquel est raccordé un appareil purgeur d'air (6) pour purger le conduit.
  8. Disconnecteur selon l'une au soins des revendications 1 à 7, caractérisé en ce que la vanne anti-retour (4,4') autorise le passage normal du fluide seulement lorsque la pression d'arrivée du fluide est supérieure à la pression atmosphérique.
  9. Disconnecteur selon l'une au moins des revendications 1 à 8, caractérisé en ce que l'orifice d'aération comporte un appareil (61) pour recueillir l'eau d'injection sortant par l'orifice du fait de la manoeuvre de purge d'air.
  10. Disconnecteur selon la revendication 9, caractérisé en ce que l'appareil (61) prévu pour recueillir l'eau d'injection comporte une canalisation pour évacuer l'eau d'injection.
EP90118517A 1989-09-28 1990-09-27 Disconnecteur pour aération et désaération d'un conduit Expired - Lifetime EP0420221B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3932402A DE3932402A1 (de) 1989-09-28 1989-09-28 Rohrtrenner zum be- und entlueften einer rohrleitung
DE3932402 1989-09-28

Publications (3)

Publication Number Publication Date
EP0420221A2 EP0420221A2 (fr) 1991-04-03
EP0420221A3 EP0420221A3 (en) 1991-12-11
EP0420221B1 true EP0420221B1 (fr) 1994-11-30

Family

ID=6390397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90118517A Expired - Lifetime EP0420221B1 (fr) 1989-09-28 1990-09-27 Disconnecteur pour aération et désaération d'un conduit

Country Status (4)

Country Link
EP (1) EP0420221B1 (fr)
AT (1) ATE114765T1 (fr)
DD (1) DD298152A5 (fr)
DE (2) DE3932402A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE725966C (de) * 1937-09-21 1942-10-21 Eduard Baese Be- und Entlueftungseinrichtung fuer Wasserleitungen
DE3045661C2 (de) * 1980-12-04 1982-11-18 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Steigrohr-Be- und -Entlüfter
DE3390421C1 (fr) * 1982-12-21 1988-04-21 Gruenbeck Wasseraufbereitung Gmbh, 8884 Hoechstaedt, De
DE3323324C3 (de) * 1983-06-29 1995-10-12 Schubert & Salzer Gmbh & Co In Verfahren und Vorrichtung zum Steuern eines Rohrtrenners in Abhängigkeit einer an einer Vergleichsstelle vorgegebenen Druckdifferenz
DE3509720A1 (de) * 1985-03-18 1986-09-25 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Rohrtrenner
DE3703715A1 (de) * 1987-02-06 1988-08-18 Schubert & Salzer Maschinen Vorsteuerventil fuer einen ueber eine antriebskammer steuerbaren rohrtrenner
DE3728608A1 (de) * 1987-08-27 1989-03-09 Licentia Gmbh Fluessigkeitsleitung mit zwei absperrorganen
DE8905206U1 (de) * 1989-04-25 1989-06-22 Pomplun, geb. Sommerfeld, Ursula, 4709 Bergkamen Rohrtrenner

Also Published As

Publication number Publication date
ATE114765T1 (de) 1994-12-15
DD298152A5 (de) 1992-02-06
DE59007839D1 (de) 1995-01-12
DE3932402A1 (de) 1991-04-11
EP0420221A3 (en) 1991-12-11
EP0420221A2 (fr) 1991-04-03
DE3932402C2 (fr) 1992-05-27

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