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EP0130306B2 - Procédé et dispositif pour contrôler un séparateur de tubes - Google Patents
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EP0130306B2 - Procédé et dispositif pour contrôler un séparateur de tubes - Google Patents

Procédé et dispositif pour contrôler un séparateur de tubes Download PDF

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Publication number
EP0130306B2
EP0130306B2 EP84104819A EP84104819A EP0130306B2 EP 0130306 B2 EP0130306 B2 EP 0130306B2 EP 84104819 A EP84104819 A EP 84104819A EP 84104819 A EP84104819 A EP 84104819A EP 0130306 B2 EP0130306 B2 EP 0130306B2
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EP
European Patent Office
Prior art keywords
pressure
line
comparison
isolator
throughflow
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
EP84104819A
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German (de)
English (en)
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EP0130306B1 (fr
EP0130306A3 (en
EP0130306A2 (fr
Inventor
Jürgen Dipl.-Ing. Bälz
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
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Application filed by Schubert & Salzer Ingolstadt-Armaturen GmbH filed Critical Schubert & Salzer Ingolstadt-Armaturen GmbH
Priority to AT84104819T priority Critical patent/ATE41962T1/de
Publication of EP0130306A2 publication Critical patent/EP0130306A2/fr
Publication of EP0130306A3 publication Critical patent/EP0130306A3/de
Publication of EP0130306B1 publication Critical patent/EP0130306B1/fr
Application granted granted Critical
Publication of EP0130306B2 publication Critical patent/EP0130306B2/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
    • E03C1/104—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using a single check valve
    • 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 method according to the preamble of claim 1 and an apparatus for performing the method.
  • the bolt If the bolt is inserted far enough into the cylindrical tube, it closes the outlet side of the tube, so that the pressure in the tube, as long as the backflow preventer is open, remains enclosed and in this form remains in the pressure comparison device and thus actually a reduction compared to that in the drain line prevailing pressure is not accessible.
  • the check valve closes, releasing the connection line to the pressure comparison device, which in the same way as in FR-A 24 07 302 leads to undesirable switching vibrations of the pipe separator.
  • a pipe separator which has a secondary backflow preventer, the position of which is used for electrical control of the pipe separator via contacts.
  • a pressure comparison device for controlling the pipe separator is not available.
  • a pressure accumulator is therefore additionally required with this device.
  • the device Apart from the fact that the device is very complex, its function depends on the tightness of the pressure storage. It is therefore not a device with a pressure comparison device assigned to a pipe separator.
  • the object of the present invention is to provide a method and a device, with the aid of which a safe and simple control of the pipe separator is possible without the risk of unstable operating conditions, even with small withdrawal quantities.
  • the flow rate is increased on the outflow side for reducing the outflow-side pressure.
  • a device with a pressure comparison device assigned to the pipe separator which has two opposing comparison surfaces, one of which is subjected to the pressure in the inflow line of the pipe separator and the other to the pressure in the outflow line of the pipe separator and an additional safety value.
  • the device has a backflow preventer connected downstream of the pipe separator, for carrying out the method it is provided that a decoupling device which is effective when the flow through the pipe separator is released and is connected in parallel to the backflow preventer and contains a secondary backflow preventer is provided between the drain line and the outflow-side comparison surface of the pressure comparison device , which in comparison to the backflow preventer releases the flow even with a small amount withdrawn from the drain line, the secondary backflow preventer communicates with the drain pipe before and after the backflow preventer.
  • the design of the secondary non-return valve causes a greater pressure reduction than the main non-return valve, so that the downstream side of the pressure comparison device, which is connected to the outlet side of the secondary non-return valve, is subjected to a lower pressure than in the absence of such a secondary -Return valve.
  • the secondary backflow preventer forms a decoupling device for the pressure comparison device, which is effective when the flow through the pipe separator is released. In this way, while the secondary backflow preventer causes a large pressure drop, the pressure drop in the main backflow preventer can be smaller so as to achieve a high flow rate.
  • the secondary backflow preventer has an injector nozzle on the outlet side, which opens into a suction chamber, which in turn is assigned to the comparison surface of the pressure comparison device facing the discharge line and is connected to the discharge line.
  • the injection pump formed in this way causes the flowing medium to reduce the pressure in the suction space surrounding it and in the pressure chamber of the pressure comparison device that communicates with it, whereby the injection pump decouples this pressure chamber as long as the medium flows through the injection pump.
  • the secondary non-return valve has a chamber with a closure element designed as a ball.
  • the ball is advantageously acted upon by a compression spring against the flowing medium, the compression spring being supported on a conical wall of the chamber which merges into the injector nozzle.
  • Pipe separator in the sense of the present invention should be understood to mean any device for shutting off and venting a pipeline, even if no interruption in the pipeline can be generated by an air gap (DE-PS 3 024 545).
  • control security is increased by the method and the device according to the invention by creating stable control relationships.
  • a flutter, i.e. H. an alternating opening and closing of the pipe separator is avoided with certainty in this way.
  • the device for preventing the backflow of a medium from a drain line 11 into an inflow line 10 is first explained with the aid of FIG.
  • An essential part of this device is a pipe separator 2 known per se, the special design of which is in principle irrelevant for the present invention.
  • a control valve 3 is connected upstream of the pipe separator 2, which in turn is controlled by a pressure comparison device 4.
  • This pressure comparison device 4 is located between a first comparison line 40, which - in relation to the direction of flow through the pipe separator 2 - opens into the inflow line 10 in front of the control valve 3, and a second comparison line 41, which follows the pipe separator 2 and a backflow preventer 5 in FIG the drain line 11 opens.
  • control valve 3 and the pipe separator 2 are connected to one another via a connecting line 12, into which a relief line 13 opens.
  • a relief line 13 there is a relief valve 6 which is controlled by the pressure comparison device 4 at the same time as the control valve 3.
  • the pipe separator 2 shown in FIG. 1 has a housing 20 with a piston 21 which is displaceably guided therein and which is sealed off from the wall of the housing 20 by an annular seal 210.
  • the piston 21 merges into a pipe section 211 which, in the flow position of the pipe separator 2, extends into a pipe socket 22 at the end of the housing 20 facing away from the drain line 11.
  • an annular seal 220 is provided in order to seal the pipe piece 211 in its position retracted into the pipe socket 22 to the outside.
  • the pipe section 211 In the ventilation position, the pipe section 211 has left the pipe socket 22, so that an annular gap is formed between the pipe section 211 and the pipe socket 22 and a ventilation opening 23 provided in the peripheral wall of the housing 20 is opened. In the area of this annular gap on the underside of the housing 20 there is a drainage connection 24 for splash water, which ends above a collecting funnel 25.
  • the housing 20 has a support ring 26 for a return spring 27 at the free end of the tube piece 211 in its venting position, at the other end of which the piston 21 is supported.
  • the housing 20 carries on its end face 200 facing the connecting line 12 a valve rod 29 with a closure element 290, which can cooperate with the inner circumference of the tube piece 211 in the manner of a sliding seal.
  • the mentioned backflow preventer 5 is arranged between the pipe separator 2 and the drain line 11. According to the embodiment shown in FIG. 1, it has a check cone 51 which is mounted and guided in a housing 50 and which is acted upon by a spring 52 in the direction of the pipe socket 22, the end of which is designed as a seat for the check cone 51.
  • the control valve 3 has a housing 30 which is divided transversely to the flow direction by a wall 31. In this wall 31 there is an opening 33 surrounded by a seat 32, which can be closed or released by a closure member 34.
  • the closure member 34 is connected via a lifting rod 35 to a piston 42 of the pressure comparison device 4.
  • This piston 42 is sealingly guided in a housing 43 and divides it into two pressure chambers 431 and 432.
  • the piston 42 is acted upon in the closing direction of the closure member 34 by a compression spring 44 supported on the end face of the housing 43, the actuating force of which is fixed at a constant safety value is what will be explained in more detail later.
  • the pressure spring 44 receiving pressure chamber 432 of the housing 43, the discharge line 11 is connected via the comparison line 41, while the pressure chamber 431 opposite the piston 42 with respect to the piston 42 Housing 43 is connected to the comparison line 40.
  • the piston 42 merges into a cylinder piece 420, with the aid of which it is guided in a guide tube 430.
  • the end face of the piston 42 facing the pressure chamber 432 forms a first comparison surface 423 of the pressure comparison device 4.
  • the second surface of the same size required for the pressure comparison is the sum of the effective end surface of the closure member 34 (comparison surface 424) and that of the cylinder piece 420 surrounding annular comparison surface 422 of the end face of the piston 42 facing the pressure chamber 431. Only the surface that corresponds to the cross-sectional area of the section 350 of the lifting rod 35 adjoining the closure member 34 is to be regarded as the effective end face of the closure member 34.
  • closure member 34 protrudes beyond the section 350, this protruding area of the closure member 34 results in a pressure equalization after it has been lifted off by the medium acting on the closure member 34 on both sides, while with the control valve 3 still closed, the surface exposed to the medium in the feed line of the closure member 34 is determined by the size of the opening 33 which corresponds to the cross-sectional area of the cylinder piece 420.
  • the relief valve 6 is located in the guide tube 430, which connects the housing 43 of the pressure comparison device 4 to the housing 30 of the control valve 3.
  • the two line sections 130 and 131 of the relief line 13 open into this guide tube 430 in a mutually offset manner, the line section 130 leading to the connecting line 12 and the line section 131 ending above a collecting funnel 28.
  • the relief valve 6 essentially consists of a tapered section 60 of the lifting rod 35.
  • This section 60 is delimited by the cylinder piece 420 on the one hand and by the section 350 on the other hand.
  • the cylinder piece 420 has an annular seal 421 at its end facing the section 60.
  • the section 350 has two ring seals 61 and 62. These are arranged on the section 350 of the lifting rod 35 in such a way that the ring seal 61 is in the flow position of the control valve 3 between the line sections 130 and 131 of the relief line 13 which open into the guide tube 430 and are offset from one another .
  • the ring seal 61 In the closed position of the control valve 3, the ring seal 61 is located between the relief line 13 and the housing 30.
  • the further ring seal 62 is always located between the relief line 13 and the housing 30, regardless of the respective working position of the lifting rod 35.
  • the piston 42 of the pressure comparison device 4 will always begin its stroke movement in one or the other direction when the difference between the pressures in the inflow line 10 and in the outflow line 11 is due to the compression spring 44 security value in one direction or the other.
  • This start of the stroke is completely independent of the local operating conditions and the pressure fluctuations that may occur in the inflow line 10 and / or the outflow line 11, as will be described in detail below with reference to FIG. 1.
  • FIG 1 shows the device just described in its construction in the shut-off and ventilation position. In this position, both the control valve 3 and the pipe separator 2 as well as the backflow preventer 5 are in their closed position, while the relief valve 6 is in its flow position.
  • the pressure ratio at the comparison surfaces 423 and 422 and 424 of the pressure comparison device also changes accordingly 4.
  • the pressure of the medium in the inflow line 10 acting on the end face of the closure member 34 (comparison surface 424) and on the comparison surface 422 surrounding the cylinder section 420 the pressure of the medium acting on the comparison surface 423 in the outflow line 11 and the compression spring 44 exceeds, the piston 42 begins its lifting movement.
  • the closure member 34 is lifted from its seat 32, whereby the opening 33 of the control valve 3 is released.
  • the relief valve 6 reaches its closed position, in which the ring seal 61 closes the connection between the line sections 130 and 131 of the relief line 13.
  • the medium flowing through the opened control valve 3 can therefore not leave the connecting line 12 and acts on the piston 21 of the pipe separator 2 with the full pressure.
  • the piston 21 now moves into its other end position, in which the pipe section 211 is immersed in the pipe socket 22 and the ventilation opening 23 closes against the inside of this pipe socket 22.
  • the closure element 290 leaves the pipe section 211, so that the flow through the pipe separator 2 is also released.
  • the medium flowing through the pipe separator 2 now lifts the non-return cone 51 from its seat and thus opens the way through the backflow preventer 5 itself.
  • the control of the device for preventing the backflow of a medium from the drain line 11 into the inflow line 10 is therefore not carried out by adapting the pipe separator 2 to the operating conditions present in the individual case.
  • the return spring 27 of the pipe separator 2 can thus be dimensioned independently of the response pressure required in each case. Rather, the pressures in the inflow line 10 and in the outflow line 11 are compared with one another in a comparison point (lifting rod 35 with comparison surfaces 423 and 422 and 424). In this case, the pressure on the side of the comparison point facing the discharge line 11 is increased by a constant safety value, which in the exemplary embodiment shown is effected by the compression spring 44 acting on the piston 42.
  • This compression spring 44 is therefore dimensioned such that the pressure it exerts on the piston 42 generates the pressure difference desired or prescribed by law as a safety value between the inflow line 10 and the outflow line 11. As soon as this pressure equilibrium is lost, this causes a stroke movement of the piston 42 in the corresponding stroke direction.
  • FIG. 1 describes the device for preventing the backflow of the medium from the discharge line 11 into the inflow line 10 in connection with a pipe separator 2, the drive (piston 21) of which is located in the flow path of the medium.
  • Figure 2 shows a modified device with a pipe separator 2, the pressure chamber 81 is arranged outside the flow path of the medium.
  • the pipe separator 2 has a housing 80 which receives a pressure chamber 81 at its end facing the inflow line 10.
  • the pressure chamber 81 is connected to the inflow line 10 via the comparison line 40 branching from it, via a control valve 9 and a control line 810 ending in the pressure chamber 81.
  • the pressure chamber 81 is delimited by the piston 82, which is sealingly guided on the housing wall and on an inlet connection 800 connected to the inflow line 10.
  • a drive sleeve 820 guided in the inlet connection 800 is connected to the piston 82, the end thereof remote from the inlet connection 800 being closed and carrying a seal 821 protruding radially beyond the drive sleeve 820.
  • the drive sleeve 820 has on its circumference one or more openings 822 which act on a locking member 83 slidably mounted on the drive sleeve 820 with the aid of a compression spring 84 supported on the piston 82, which presses the closure member 83 against the seal 821 presses.
  • the closure member 83 has a bulge 830 which encloses a chamber 831. The medium can flow through this when the closure member 83 is lifted off the seal 821.
  • a connecting line 14 leading to the backflow preventer 5 is surrounded by a seal 801 with which the end of the bulge 830 of the closure member can cooperate.
  • the housing 80 is divided into two chambers 802 and 803 by a support ring 85.
  • a return spring 86 for the piston 82 is supported on the support ring 85.
  • the chamber 802 receives the closure member 83.
  • the control valve 9 is designed according to Figure 2 as a slide valve and has in a housing 90 two pistons 91 and 92, each with two ring seals 910 and 911 or 920 and 921 for sealing against the housing 90.
  • the pistons 91 and 92 are with each other and with the Piston 42 ( Figure 1) or a membrane 45 ( Figure 2) of the pressure comparison device 4 connected by means of a piston rod 93.
  • a branch line 400 branches off from the comparison line 40. This is arranged and dimensioned such that it always opens into the housing between the two pistons 91 and 92, regardless of the working position of the two pistons 91 and 92. In the other end position, not shown, of the pistons 91 and 92, the branch line 400 is connected to the control line 810.
  • the control line 810 has an enlarged orifice 811 which, in the end position of the piston 92 shown, brings about a connection between the control line 810 and a relief line 95, while this connection is interrupted in the other end position of the piston 92.
  • the relief line 95 ends above a collecting funnel 950.
  • FIG. 2 shows a device which prevents a pressure increase caused by the medium flowing through the pipe separator on the side of the pressure comparison device 4 facing the drain line 11.
  • a decoupling device 7 is arranged between the drain line 11 and the side of the pressure comparison device 4 facing the drain line 11.
  • such a decoupling device 7 has been omitted from the device shown in FIG. 1.
  • a negative pressure is generated as a function of the flow velocity of the flowing medium, with which the side of the pressure comparison device 4 facing the drain line 11 is acted upon.
  • the decoupling device 7 is arranged between the drain line 11 and the comparison surface 423 of the pressure comparison device 4 facing the drain line 11, parallel to the backflow preventer 5. It has a control line 70 which opens on one side into the connecting line 14 between the pipe separator 2 and the backflow preventer 5 and on the other side into the drain line 11. In the control line 70 there are a secondary non-return valve 53 and an injection pump 71 in the flow direction.
  • the secondary non-return valve 53 has a ball 54 as a closure member, which is arranged in a chamber 55 which is enlarged relative to the control line 70.
  • the ball 54 is acted upon by a compression spring 56 which, when the control line 70 is not traversed by the medium, is held in contact with a conical wall 550 of the chamber 55 which merges into the control line 70.
  • the compression spring 56 in turn is supported on a conical wall 551 of the chamber 55 which merges into an injection nozzle 710.
  • the chamber 55 receiving the ball 54 is thus limited by the injection pump 71.
  • the start 700 of the control line 70 which has a larger diameter than the injection nozzle 710, is arranged at a distance in front of the injection nozzle 710.
  • This beginning 700 of the control line 70 and the injection nozzle 710 essentially form the injection pump 71, which is surrounded by a suction space 72.
  • This suction space 72 is connected to the pressure comparison device 4 via the comparison line 41.
  • the starting position of the device shown in FIG. 2 corresponds to that of the device shown in FIG. In this position, the difference between the pressures in the inflow line 10 and in the outflow line 11 is less than the safety value defined by the compression spring 44.
  • the pressure chamber 431 of the pressure comparison device 4 is connected to the outlet connection 94 and the pressure chamber 81 of the pipe separator 2 is connected to the outlet connection 95, so that both pressure chambers 431 and 81 are relieved.
  • the pressure ratio in the inflow line 10 and in the outflow line 11 changes in such a way that the pressure acting on the comparison surface 425 of the pressure comparison device 4 outweighs the pressure of the medium acting on the comparison surface 423 by more than the safety value, this begins on the comparison surface 425 acting medium to move the membrane 45 (or the piston 42) against the compression spring 44.
  • the membrane 45 takes the two pistons 91 and 92 with it via the piston rod 93, pressure equalization taking place through the opening 900 in the housing 90.
  • the connections between the comparison line 40 and the relief line 94 and between the control line 810 and the relief line 95 are interrupted, while the connection between the comparison line 40 and the control line 810 leading into the pressure chamber 81 is released.
  • the piston 82 of the pipe separator 2 which is acted on in this way takes along the closure member 83, which is supported on the seal 821 under the action of the compression spring 84, via the drive sleeve 82 until it runs onto the seal 801.
  • the medium not only flows through the backflow preventer 5, but also flows through the control line 70 which is secured against backflow of the medium by the secondary backflow preventer 53.
  • the injection pump 71 causes a flow in the suction chamber 72 when the medium flows Generates negative pressure with which the pressure comparison device 4 is acted on, so that there is a pressure reduction. Even in the case of small removal quantities and low flow velocities of the medium, the pressure comparison device can therefore be in the pressure chamber 432 4 no pressure increase occur, which would result in the closing of the pipe separator 2.
  • the spring 52 overcomes the pressure of the medium flowing in from the pipe separator 2 and brings the non-return cone 51 into its closed position.
  • the medium only flows through the secondary backflow preventer 53 and the injection pump 71, as a result of which the flow rate increases there and thereby also ensures that the pipe separator 2 remains in its flow position even with such small withdrawal quantities.
  • the pressure in the suction chamber 72 does not increase again until the withdrawal quantity drops further, so that the flow velocity in the injection pump 71 drops below a value specified by the construction. If the pressure difference between the inflow line 10 and the outflow line 11, which is predetermined by the compression spring 44, is undershot, the pressure comparison device 4 causes the pipe separator 2 to be returned to its closing and ventilation position.
  • the membrane 45 returns to the starting position shown in FIG. 3 when the safety value (force of the compression spring 44) is undershot.
  • the pistons 91 and 92 are adjusted via the piston rod 93, so that the connection between the comparison line 40 and the control line 810 is interrupted again and the connection between the comparison line 40 and the drain port 94 on the one hand and between the control line 810 and the drain port 95 on the other hand is released, so that the pressure chambers 431 and 81 are relieved and allow an accelerated return of the pipe separator 2 to its ventilation position.
  • the pressure comparison device 4 is always arranged outside the pipe separator 2. However, this is not a requirement. 3, a modification of the embodiment shown in FIG. 2 is discussed, in which the pressure comparison device 4 is integrated in the pipe separator 2.
  • the piston 82 of the pipe separator 2 is part of the pressure comparison device 4, the pressure chamber 81 of the pipe separator 2 facing the inflow line 10 simultaneously forming one of the two pressure chambers of the pressure comparison device 4.
  • This pressure chamber 81 is connected via one or more openings 401 - which corresponds to the comparison line 40 shown in FIGS. 1 and 2 - to a prechamber 804, which in turn is connected to the inflow line 10.
  • the openings 822 controlling the flow through the pipe separator 2 are in this case arranged at the end of the inlet connection 800 facing away from the inflow line 10, which end is closed on its end face 806 and has an annular seal 805 on its outer circumference.
  • the chamber between the support ring 85 and the piston 82 thus forms the other pressure chamber 432 of the pressure comparison device 4.
  • the sleeve-like closure member 87 has a ring-like bulge 870 between the support ring 85 and its free end, which is dimensioned such that the bulge 870 in the flow position of the pipe separator 2 establishes the connection between the openings 822 and a closure sleeve 88.
  • This closure sleeve 88 is displaceably guided on an outlet nozzle 807 projecting into the interior of the housing 80 and is pressed by a compression spring 89 in the direction of the inlet nozzle 800 against a stop 807 provided on the outlet nozzle 807.
  • the closure sleeve 88 At its end facing the inlet connection 80, the closure sleeve 88 carries a sealing ring 801 for cooperation with the free end of the closure member 87.
  • the return spring 860 defines the safety value, which determines the pressure difference from which the pipe separator 2 is to assume its flow position. If this safety value is exceeded by the existing pressure difference between the inflow line 10 (pressure chamber 81) and the outflow line 11 (pressure chamber 432), the piston 82 moves the closure member 87, which thereby runs onto the closure sleeve 88 and prevents ventilation via the ventilation opening 23. At the same time, the bulge 870 releases the connection between the inflow line 10 and the outflow line 11, the backflow preventer 5 and the decoupling device 7 operating in the manner already described above.
  • the pipe separator 2 then returns in a corresponding manner.

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  • 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)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Pipeline Systems (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Cell Separators (AREA)

Claims (5)

  1. Procédé pour commander une vanne de sectionnement d'une canalisation tubulaire en fonction d'une différence de pression d'une valeur prédéterminée en un endroit de comparaison, cette différence résultant de la comparaison des pressions du côté admission et du côté évacuation, dans un dispositif destiné à empêcher l'écoulement de retour d'un fluide par une canalisation d'évacuation, une marge de sécurité d'une valeur constante étant ajoutée à la pression dans la canalisation d'évacuation, et l'écoulement à travers la vanne de sectionnement étant rendu libre lorsque se trouve atteinte la différence de pression de valeur prédéterminée, alors que l'écoulement est à nouveau interrompu lorsque la différence de pression tombe au-dessous de la valeur en question, et que c'est seulement à l'arrêt de l'écoulement que la différence de pression augmente à nouveau, caractérisé en ce que, pendant la durée de l'écoulement à travers la vanne, on réduit la valeur de la pression à l'endroit du côté évacuation qui est fournie au dispositif de comparaison des pressions, par rapport à la pression qui existe effectivement dans la canalisation d'évacuation, et en ce qu'on l'augmente à nouveau à l'arrêt de l'écoulement à travers la vanne, et en ce qu'on effectue chaque fois la comparaison de la pression ainsi obtenue avec la pression du côté admission de la vanne.
  2. Procédé selon la revendication 1, caractérisé en ce que, pour diminuer la pression du coté évacuation, la vitesse d'écoulement est augmentée du côté évacuation.
  3. Dispositif pour la mise en oeuvre du procédé selon la revendication 1 ou 2, comportant un dispositif (4) comparateur de pression associé à la vanne de sectionnement (2) et possédant deux surfaces de comparaison (423,425) opposés l'une à l'autre, l'une de ces surfaces étant soumise à la pression de la canalisation d'admission (10) de la vanne de sectionnement, alors que l'autre surface est soumise à la pression de la canalisation d'évacuation (11) de la vanne de sectionnement ainsi qu'à une marge complémentaire de sécurité, le dispositif comportant en outre un organe anti-retour (5) monté en aval de la vanne de sectionnenent, caractérisé en ce qu'un dispositif de découplage (7) est prévu entre la canalisation d'évacuation (11) et la surface de comparaison (423) associée au côté évacuation dans le dispositif (4) comparateur de pression, ce dispositif de découplage étant monté en parallèle avec l'organe anti-retour et fonctionnant sous l'effet de la libération de l'écoulement à travers la vanne de sectionnement, ce dispositif de découplage contenant un organe anti-retour auxiliaire (53) qui libère l'écoulement même pour un prélèvement d'une faible quantité dans la canalisation d'évacuation (11), en comparaison avec l'organe anti-retour principal (5), l'organe anti-retour auxiliaire (53) communiquant avec la canalisation d'évacuation (14,11) en amont et en aval de l'organe anti-retour principal (5), et l'organe anti-retour auxiliaire (53) comportant du côté sortie une buse d'injecteur (710) débouchant dans une chambre d'aspiration (71) qui est associée à la surface de comparaison (423) correspondant à la canalisation d'évacuation (11) dans le dispositif (4) comparateur de pression, et qui communique avec la canalisation d'évacuation (11).
  4. Dispositif selon la revendication 3 ou 4, caractérisé en ce que l'organe auxiliaire (53) anti-retour présente une chambre (55) comportant un élément obturateur en forme de bille (54).
  5. Dispositif selon les revendications 4 et 5, caractérisé en ce qu'un ressort (56) de compression agit sur la bille (54) à l'encontre du milieu en écoulement, le ressort (56) de compression s'appuyant sur une paroi (551) conique de la chambre (55) qui se prolonge par la buse (710) d'injection.
EP84104819A 1983-06-29 1984-04-28 Procédé et dispositif pour contrôler un séparateur de tubes Expired - Lifetime EP0130306B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84104819T ATE41962T1 (de) 1983-06-29 1984-04-28 Verfahren und vorrichtung zum steuern eines rohrtrenners.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3323324 1983-06-29
DE3323324A DE3323324C3 (de) 1983-06-29 1983-06-29 Verfahren und Vorrichtung zum Steuern eines Rohrtrenners in Abhängigkeit einer an einer Vergleichsstelle vorgegebenen Druckdifferenz

Publications (4)

Publication Number Publication Date
EP0130306A2 EP0130306A2 (fr) 1985-01-09
EP0130306A3 EP0130306A3 (en) 1985-09-25
EP0130306B1 EP0130306B1 (fr) 1989-04-05
EP0130306B2 true EP0130306B2 (fr) 1994-03-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104819A Expired - Lifetime EP0130306B2 (fr) 1983-06-29 1984-04-28 Procédé et dispositif pour contrôler un séparateur de tubes

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EP (1) EP0130306B2 (fr)
AT (1) ATE41962T1 (fr)
DE (2) DE3323324C3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500907A1 (de) * 1985-01-12 1986-07-31 Juergen Baelz Controls Gesellschaft für Meß- und Regeltechnik mbH, 7102 Weinsberg Vorrichtung zum absperren und belueften einer rohrleitung
DE3501070A1 (de) * 1985-01-15 1986-08-07 Juergen Baelz Controls Gesellschaft für Meß- und Regeltechnik mbH, 7102 Weinsberg Vorrichtung zum absperren und belueften einer rohrleitung
DE3509720A1 (de) * 1985-03-18 1986-09-25 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Rohrtrenner
DE8508064U1 (de) * 1985-03-19 1985-04-25 Honeywell-Braukmann GmbH, 6950 Mosbach Ventilkombination
DE3520250A1 (de) * 1985-06-05 1986-12-11 Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt Rohrtrenner
DE3616266A1 (de) * 1986-05-14 1987-11-19 Baelz Juergen Controls Vorrichtung zum absperren und belueften einer rohrleitung
DE3616267A1 (de) * 1986-05-14 1987-11-19 Baelz Juergen Controls Absperr- und belueftungsvorrichtung, insbesondere rohrtrenner fuer trinkwasserleitungen
DE3824493A1 (de) * 1988-07-20 1990-01-25 Schubert & Salzer Maschinen Verfahren und vorrichtung zur steuerung von zwei mediumstroemen
GB8826993D0 (en) * 1988-11-18 1988-12-21 Pro Aqua Systems Ltd Pressure reducing valve
DE3932402A1 (de) * 1989-09-28 1991-04-11 Schubert & Salzer Maschinen Rohrtrenner zum be- und entlueften einer rohrleitung
CN102392474B (zh) * 2011-08-12 2013-06-05 天津职业技术师范大学 废水二次利用增压系统及控制方法
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 (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588284A (en) * 1946-07-09 1952-03-04 Herbert C Otis Fluid pressure differential responsive cutoff valve
DE1600981B1 (de) * 1967-01-14 1972-03-09 Alfred Waletzko Appbau Rohrunterbrecher
DE2747941C2 (de) * 1977-10-26 1985-02-14 Lang Apparatebau GmbH, 8227 Siegsdorf Vorrichtung zum Schutz von Trinkwasserleitungen gegen rückfließendes Brauchwasser
CH628383A5 (de) * 1977-10-26 1982-02-26 Waletzko Alfred Apparatebau Vorrichtung zum schutz von trinkwasserleitungen gegen rueckfliessendes brauchwasser.
DE2806310C2 (de) * 1978-02-15 1986-08-21 Lang Apparatebau GmbH, 8227 Siegsdorf Vorrichtung zum Schutz von Trinkwasserleitungen gegen rückfließendes Brauchwasser
DE2849825C2 (de) * 1978-11-17 1984-05-10 Lang Apparatebau GmbH, 8227 Siegsdorf Trinkwasser-Durchflußarmatur mit in eine Trinkwasserversorgungsleitung eingebautem Durchflußwächter
FR2469630B1 (fr) * 1979-11-12 1986-02-14 Frisquet Anc Ets M Disconnecteur pour canalisation d'eau potable
DE3247325C2 (de) * 1982-12-21 1990-02-15 Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt Rohrtrenner

Also Published As

Publication number Publication date
ATE41962T1 (de) 1989-04-15
DE3323324C3 (de) 1995-10-12
DE3323324C2 (de) 1986-10-09
EP0130306B1 (fr) 1989-04-05
EP0130306A3 (en) 1985-09-25
DE3477591D1 (en) 1989-05-11
DE3323324A1 (de) 1985-01-10
EP0130306A2 (fr) 1985-01-09

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