EP3399112B1 - Bouche à eau pourvue de clapet antiretour dans la partie supérieure - Google Patents

Bouche à eau pourvue de clapet antiretour dans la partie supérieure Download PDF

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Publication number
EP3399112B1
EP3399112B1 EP18405011.0A EP18405011A EP3399112B1 EP 3399112 B1 EP3399112 B1 EP 3399112B1 EP 18405011 A EP18405011 A EP 18405011A EP 3399112 B1 EP3399112 B1 EP 3399112B1
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EP
European Patent Office
Prior art keywords
valve
hydrant
spring
seal
water
Prior art date
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Application number
EP18405011.0A
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German (de)
English (en)
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EP3399112A1 (fr
Inventor
Dieter Jermann
Ralph Meier
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Hinni AG
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Hinni AG
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Publication of EP3399112A1 publication Critical patent/EP3399112A1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/16—Devices for retaining foreign matter, e.g. sand
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/04—Column hydrants
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/08—Underground hydrants
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/14—Draining devices for hydrants
    • 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

Definitions

  • the invention relates to a hydrant in the configuration as an underground or above-ground hydrant with a backflow preventer in the upper part, in order to rule out with certainty that inadvertent or malicious media, such as waste water or substances hazardous to health, can be introduced into the water supply network via the hydrant.
  • the upper part is formed by an underfloor attachment, which is hidden underground together with the riser pipe.
  • the upper part is an extension pipe that rises above ground.
  • Hydrants in the form of underground or above-ground hydrants with a direct connection to the underground water supply network are generally used for drawing water, especially for fire fighting work by the fire brigade.
  • water flowing back from connected hoses or fittings - or via a connected pump - can inadvertently or by ill-intentioned people bring dirty water or other media into the water supply network via hydrants. It is therefore relevant to equip hydrants with backflow preventer.
  • the valve with backflow preventer has a closing body that is pressed onto the valve seat via a rod in the closed position, so that neither water from the network flows out of the valve nor inadvertently foreign liquid - e.g. dirty water - could be fed into the network via the valve.
  • water normally flows from the network past the valve and out of its outflow nozzle.
  • blades on the valve swiveled in by the flow reveal an annular gap to the line cross-section. If foreign liquid is introduced into the valve at increased pressure via the discharge nozzle, the closure body moves against the normal direction of flow, closes the valve seat and the counterpressure presses the valve wings against the inner pipe wall.
  • a drainage opening is exposed on the closure body, which is connected to a channel leading to the outside. The dirty water brought into the valve cannot get into the network, but is returned to the outside via the valve through a dirt outlet.
  • the EP 1 347 104 A2 relates to a water outlet valve for installation in a house wall with a mains connection, an outlet and an actuating element.
  • the actuating element is connected to an axially displaceable base body, on which a spring attaches, which on the other hand carries a closure body which shuts off the valve seat.
  • the spring is compressed and the base body presses the closure body onto the valve seat.
  • the base body is set back and the closing body is pressed onto the valve seat by the expanding spring.
  • the closure body is lifted from the valve seat.
  • the valve has an emptying mechanism that is automatically activated when the valve is closed.
  • the FR 2 773 373 A1 deals with an underground hydrant with a backflow preventer.
  • an upper valve seat opens and a spring-loaded closure body arranged below it lifts upwards from the main valve seat, whereby the main valve is in the open position.
  • a second spring holds an additional valve hanging from a plunger on a second valve seat, then the flow of foreign medium introduced into the hydrant into the water supply network is blocked.
  • the additional valve is lifted from the second valve seat by the flow pressure against the force of the second spring and the water flow through enables.
  • the upper valve seat remains closed and the closure body is pressed against the force of the first spring onto the main valve seat.
  • the second spring pulls the additional valve onto the second valve seat, so that an additional shut-off is created in addition to the closed main valve and no foreign medium can enter the water supply network via the hydrant.
  • an assembly for preventing the introduction of foreign matter into the water supply network for post hydrants.
  • the assembly has a spring-loaded additional valve located above the main valve in the riser pipe, which is lifted from the seal seat by the flow pressure when water is withdrawn.
  • the additional valve is normally closed so that when foreign substances are introduced via the hose connection, the foreign substances cannot reach the main valve and on to the water supply network.
  • the spring acting on the additional valve is supported on the valve rod and is guided on it. Foreign substances brought into the hydrant are collected in an abdominal cavity and can be drained from there via an outlet valve or rinsed out with water flowing in via the main valve.
  • EP 2 679 869 A1 describes a main valve with an integrated backflow preventer for a hydrant. If the main valve is in an open position and an attempt is made to introduce the medium via the hydrant into the water supply network, a spring and the medium pressure press a seal onto the main valve seat, which blocks access to the water supply network. The seal sits on the closure body connected to the spring, which is pushed away from the base body firmly connected to the valve rod by the spring acting solely on the closure body.
  • Subject of DE 199 39 113 A1 is the construction of the secondary shut-off valve in each of the two outlet nozzles of a 3-spindle post hydrant.
  • the EP 1 010 821 A1 relates to an underground hydrant which is provided in the outlet connection with a non-return valve designed as a retrofittable insert.
  • the parked hydrant can empty itself automatically via a residual water drain.
  • the US 2009/0 320 933 A1 discloses a post hydrant with a backflow preventer and a ventilation valve for automatic emptying of the hydrant through a drain valve when the main valve is closed.
  • the backflow preventer is installed in the outlet connection of the upper part of the hydrant, while the ventilation valve is installed in the riser pipe.
  • the DE 20 2012 001 007 U1 relates to a hydrant with a backflow preventer, which is part of the shut-off valve, and ventilation valves for draining residual water in the hydrant are installed in the housing of the shut-off valve.
  • the invention is based on the object of creating a hydrant with a backflow preventer to prevent accidental or malicious introduction of media, such as wastewater or health-endangering substances, via hydrants in the water supply network is definitely excluded.
  • the traditional functions of the hydrant must not be impaired.
  • the aim is to increase the functional reliability, to keep the outlay on equipment low and to enable hydrants that have already been installed to be efficiently retrofitted in the water supply network.
  • a further task is to design the non-return valve to be created in a modified form for different variants of upper parts, i.e. for an attachment for an underground hydrant as well as for differently configured attachment pipes for above-ground hydrants.
  • the hydrant in the configuration as an underground or above-ground hydrant for installation in a water supply network has an upper part which, in the case of an above-ground hydrant, is designed as an extension pipe, which is installed soaring above ground.
  • the upper part is designed as an underfloor attachment, which is to be installed hidden underground together with a riser pipe.
  • the upper part has at least one outlet connection used for drawing water.
  • a riser pipe with a valve rod extending vertically therein is connected to the bottom of the upper part.
  • the valve rod is connected on the one hand to the valve rod extension and together forms a valve rod arrangement.
  • the valve rod is connected to a main valve which leads to the water supply network and can be adjusted between a closed position and an open position required for water withdrawal.
  • At least one backflow preventer in the form of a mechanical arrangement with a seal supported by a spring, which is intended to close a sealing surface located in the flow path to the water supply network.
  • a drain valve is provided in the riser pipe for automatic emptying of the water that has accumulated when the hydrant is switched off.
  • the pillar hydrant can be designed as a single-spindle hydrant with the at least one outlet connection and the valve rod arrangement for actuating the main valve.
  • the pillar hydrant is designed as a three-spindle hydrant with two outlet nozzles and two side valves for each separate opening or blocking of the two existing outlet nozzles and the valve rod arrangement for actuating the main valve.
  • the backflow preventer is arranged in the respective outlet connection of the upper part or in the respective side valve of the upper part.
  • the flow path for the ambient air flowing into the hydrant via the ventilation valve bypasses the at least one non-return valve arranged in the upper part and the at least one existing outlet connection.
  • the ventilation valve has a closure body designed as a float, which is built into the upper end of a spindle attachment mounted on the valve rod extension and which closes or releases a ventilation opening into the atmosphere.
  • the backflow preventer intended for installation in an outlet connection has a housing, the outer wall of which is sealed off from the inner wall of the outlet connection.
  • the backflow preventer also has a guide part which is fixedly arranged in the housing, adjacent to the outlet from the outlet connection, and in which one end of the spring is inserted, while the other end of the spring acts on the carrier.
  • the sealing surface on the housing faces away from the outlet and is closed by the seal in the position that acts as a backflow preventer.
  • the backflow preventer which is intended for installation in the two side valves that cannot be operated separately, has a housing installed horizontally in the upper part with a centrally positioned spindle leadthrough and a vertical passage on each side of the spindle leadthrough.
  • the spindle lead-through is used for vertical passage of the valve rod extension.
  • the vertical passages are provided for receiving a fixed guide part with a spring attached and a carrier connected to it.
  • the guide part is telescopically displaceable in the carrier, and the spring is clamped between a cover fastened on top of the vertical passage in question and the carrier below, which is axially displaceably guided in the vertical passage. Below points the carrier on a seal.
  • Inside the upper part there is a sealing surface for each of the side valves, which is closed by the respective seal in the position that acts as a backflow preventer.
  • the backflow preventer intended for installation in the two separately operable side valves also has a housing installed horizontally in the upper part with a centrally positioned spindle lead-through and a vertical passage on each side of the spindle lead-through.
  • the spindle leadthrough in turn serves for the vertical passage of the valve rod extension.
  • the vertical passages are now provided for receiving a rotatable but axially fixed side valve spindle with an axially adjustable but radially locked counter nut screwed onto it, as well as a spring attached below this and a carrier connected to it.
  • the external thread part of the side valve spindle protrudes into the vertical passage and is telescopically slidable in the carrier.
  • the side valve spindle is axially fixed in a cover fastened on top of the vertical passage.
  • the spring is clamped between the lock nut and a spring retainer that is fixed internally in the carrier.
  • the carrier is guided axially displaceably in the vertical passage, and the carrier has the bottom Seal on.
  • the conventional hydrant - here in the form of an above-ground hydrant without a backflow preventer - has a top pipe rising above ground when installed as an upper part 1 , a riser 6 connected to the upper part 1 and standing in the ground, from which an inlet bend leads to the water supply network 9 .
  • the upper part 1 has an outlet connection 11 with a hose connection serving for water extraction, and at the bottom - at the level of the ground - the upper part 1 is surrounded by a foundation ring 19 .
  • a valve rod extension 2 which is connected to a valve rod 7 arranged vertically in the riser pipe 6, extends vertically through the upper part 1 .
  • valve rod 7 is seated in the riser 6 with one Main valve 8 connected, which is adjustable between a closed position and an open position required for water withdrawal and forms the shut-off device to the water supply network 9 .
  • Main valve 8 connected, which is adjustable between a closed position and an open position required for water withdrawal and forms the shut-off device to the water supply network 9 .
  • the valve rod extension 2 and the valve rod 7 together result in the valve rod assembly 2 , 7.
  • the riser pipe 6 has a drainage valve 60 , which is provided when the hydrant is switched off to automatically empty the water that has accumulated in the hydrant.
  • An underground hydrant not shown in the drawing, has in principle the same components. Only the upper part 1 now has the shape of an underfloor attachment with generally much lower overall height and a differently configured outlet connection 11. This type of upper part 1 is arranged underground in a shaft, while the riser 6 is in turn in the ground. The foundation ring 19 is omitted .
  • the return valve 3 in the outlet spigot 11 and is held by the screwed into the outflow pipe 11 with the interposition of the port seal 12 hose connector 13 in position.
  • the backflow preventer 3 is currently in the closed state (see Fig. Figures 2A and 2F ).
  • This non-return valve 3 first comprises a cartridge-shaped housing 36, whose outer wall is sealed against the inner wall of the outlet spigot 11 and which is towards each open to the discharge from the outlet spigot 11 and the upper part 1, wherein the in the direction of the upper part 1, turned away from the outlet sealing surface 360 is formed by a narrowed clearance.
  • an axially movable carrier 32 is arranged, which has a tubular spring receptacle 321 at the rear facing the hose connection 13 , which is followed by a plate-like sealing base 323 and first of all an externally threaded section 324 .
  • the seal 33 is seated on the externally threaded section 324 and on the seal base 323 and is from the counter disk 34 and the locking nut 35 screwed onto the externally threaded section 324 is held.
  • One end of the helical spring 31 acting as a compression spring is inserted in the spring receptacle 321 , while the other end of the spring rests in a winged guide part 30 which is firmly positioned in the housing 36 and which is arranged adjacent to the outlet from the outlet connection 11 .
  • the spring 31 is thus supported on the one hand in the guide part 30 and on the other hand has a resilient effect on the carrier 32 provided with the seal 33 .
  • the sealing surface 360 is closed by the seal 33 .
  • the components of the backflow preventer 3 are designed and arranged in such a way that the pressure from the irregular medium present at the outlet connection 11 increases the contact pressure generated by the spring 31 on the seal 33 and the sealing surface 360 .
  • the introduction of irregular medium through the outlet connection 11 into the hydrant and ultimately into the water supply network 9 is thus excluded.
  • the drainage valve 60 provided in the riser 6 serves as a temporary opening to the ground. According to the state of the art, ventilation of the hydrant for automatic water drainage has so far been possible through the hose connection 13 in the outlet nozzle 11 .
  • a ventilation valve 5 is now provided in the spindle attachment 20 , which is mounted on the valve rod extension 2 , which has a closure body 50 designed as a float.
  • the main valve 8 When the main valve 8 is closed, the water column standing in the hydrant sinks and thus the closure body 50 lowers from the ventilation opening 200 from the previous limited closed position into the limited open position.
  • complete emptying takes place automatically the drain valve 60 into the ground. The flow path for the ambient air flowing into the hydrant via the ventilation valve 5 for emptying it thus no longer runs through the outlet connection 11.
  • the spindle attachment 20 is located in the upper end of the valve rod extension 2 , which ends in a nest space 17 .
  • a positioning sleeve 23 is placed at the bottom, a spindle seal 22 above and a scraper ring 21 at the top, all of which rest in the nest space 17 .
  • the vertical freedom of movement of the closure body 50 is limited by an attached securing element 24 and complementary contours on the closure body 50 and in the nest space 17 .
  • a protective cap 10 that can be slipped onto the upper part 1 serves as a cover for the spindle attachment 20.
  • This sequence of figures relates to an attachment pipe as upper part 1, second variant, in a single-spindle design with two side valves SV left , SV right and two outlet nozzles 11 for a post hydrant.
  • the outlet nozzles 11 are each provided with a hose connection 13 and an interposed connection seal 12 .
  • the valve rod extension 2 extends with the top mounted Spindle attachment 20 , which is accessible within a lower cap part 14 placed on the upper part 1 when the protective cap 10 covering the lower cap part 14 is opened.
  • the two side valves SV left , SV right are installed in a plate-like housing 46 which rests horizontally on the upper part 1 .
  • a sealing surface 16 in the upper part 1 which is designed as a narrowed inside width.
  • the structurally adapted backflow preventer 4 is formed by the respective side valve SV left , SV right .
  • the check valve 4 in the left side valve SV is left (closed open, while the right side valve SV right s. Figure 3A ). This situation does not exist in reality, but is only intended to illustrate the possible positions of the side valves SV left , SV right .
  • Either both side valves SV left , SV right would be in the open position, namely by the water pressure when the main valve 8 is open. Or when the main valve 8 is closed, the action of the two springs 41 also closes both side valves SV left , SV right .
  • the "one-sided closed" situation can arise, however, when the flow path via one of the two side valves SV left , SV right is blocked by the fact that the hose or other consumer connected to the relevant side valve SV left , SV right is closed at the end, typically e.g. at a fire brigade nozzle.
  • the ventilation of the hydrant by means of the ventilation valve 5 for automatic water drainage when the main valve 8 is closed and the closure of the ventilation opening 200 when the main valve 8 is open are for the execution according to FIGS Figures 2A to 2E identical.
  • the housing 46 has a centrally positioned spindle leadthrough 460 for the vertical passage of the valve rod extension 2 and on both sides of the spindle leadthrough 460 each have a vertical passage 466 for receiving a fixed, rod-shaped guide part 40 with an attached spring 41 and thus connected cartridge-like carrier 42.
  • the wiper ring 21 and the spindle seal 22 which are penetrated by the spindle attachment 20, are inserted into the socket seat 461 and the seal seat 462 of the spindle leadthrough 460 .
  • the guide part 40 is telescopically slidable in the support 42 , namely in its axial spring receptacle 421 , which forms a cylindrical free space .
  • the spring 41 is between a cover 427 fastened on top of the relevant vertical passage 466 with the screws 428 - below this the wiper ring 426 is inserted - and clamped below the carrier 42 , which is axially displaceably guided in the vertical passage 466 .
  • the spring 41 is in turn a helical spring acting as a compression spring.
  • a counter-disk 44 is fastened to the bottom of the carrier 42 by means of a connecting element 424 , for example a screw.
  • the disk-shaped sealing base 423 with the screws 429 and the nuts 45 is attached to the counter disk 44 from below.
  • the seal 43 is seated at the bottom of the combination of counter-disk 44 and seal base 423 .
  • the sealing surface 16 present inside the upper part 1 for each of the side valves SV left , SV right is closed by the respective seal 43 in the position that acts as a backflow preventer 4 .
  • the components of the backflow preventer 4 in the respective side valve SV left , SV right are again designed and arranged in such a way that in the position effective as backflow preventer 4 - i.e. with the main valve 8 closed - the pressure of an irregular medium at the outlet connection 11 is that of the spring 41 increased contact pressure generated on the seal 43 and the sealing surface 16 .
  • This sequence of figures relates to an attachment pipe as an upper part 1, third variant, in a three-spindle design with two side valves SV left , SV right and two outlet nozzles 11 for a post hydrant.
  • the outlet nozzles 11 are in turn each provided with a hose connection 13 and an interposed connection seal 12 .
  • the side valves SV left , SV right can be operated separately by actuating the respective side valve spindle 25 .
  • the valve rod extension 2 extends vertically with the spindle attachment 20 located above, which is hidden in the lower cap part 14 placed on the upper part 1 , but becomes accessible when the protective cap 10 covering the lower cap part 14 is opened.
  • a cover 427 with an interposed wiper ring 426 is attached to the top of the housing 46 with the screws 428 over each of the two vertical passages 466 .
  • a rotatable but axially fixed side valve spindle 25 is seated on the cover 427 with the interposition of a further seal 425 , the axially adjustable but radially locked counter nut 26 , which is guided in the vertical passage 466 , is screwed onto the threaded shaft 250 .
  • the threaded shaft 250 protruding through the vertical passage 466 extends into the carrier 42 , which is arranged displaceably to a limited extent in the vertical passage 466 .
  • the compressible spring 41 is on the threaded shaft 250 and is clamped between the counter nut 26 and a fixed point in the spring receptacle 421 of the carrier 42 .
  • the assembly consisting of the counter disk 44 , seal base 423 , connecting element 424 , screws 429 , seal 43 and nuts 45 is as in the previous variant Figures 3B to 3D procure and attached to the carrier 42 .
  • the nature and positioning of the sealing surfaces 16 are also identical .
  • the separate Absperr south both side valves SV left SV right this pair of figures
  • the check valve 4 in the left side valve SV reflects a real possible different position of both side valves SV left SV right or backflow preventer fourth left is closed open, while the right side valve SV right.
  • This situation arises when the main valve 8 and also the left side valve SV are left open, so water can be taken from the left outlet spigot.
  • the unlocked left side valve SV left is pressed into the open position according to the upper position of the lock nut 26 against the action of the upwardly compressed spring 41 .
  • the carrier 42 slides upward into the relevant vertical passage 466 .
  • the right side valve SV on the right is locked in the closed position according to the lower position of the lock nut 26 , so that the water pressure cannot cause an opening.
  • the spring 41 is compressed maximally downwards by the lock nut 26 and the carrier 42 is pushed out downwards into the relevant vertical passage 466 .
  • the ventilation valve 5 is closed as a result of the water standing in the valve rod extension 2 , and the closure body 50 is lifted into its closed position.
  • the hydrant is currently not under pressure because the main valve 8 is either closed or the hydrant is not at all on the water pipe network 9 or the water pipe network 9 is currently depressurized.
  • the non-return valve 4 is unarretiert left according to the upper position of the lock nut 26 in the left side of valve SV, however, pushed by the action of the spring 41 in the closed position.
  • the spring 41 has expanded upwards and downwards.
  • the carrier 42 has moved maximally downward out of the relevant vertical passage 466 .
  • the situation shown arises when this side valve SV is in the open position on the left , but no water pressure is acting.
  • the ventilation valve 5 would be open because the lack of buoyancy causes the closure body 50 to sink into its open position.
  • the hydrant is not under pressure - for example, because the main valve 8 is closed - yet the locknut so the associated sealing surface 16, 26 of the return valve 4 is locked to the right in the closed position in the right side of valve SV due to the lower position, closed by the-engaging seal 43rd
  • the spring 41 is pressed downwards by the lock nut 26 , has moved downwards to the maximum and thereby driven the carrier 42 downwards to the maximum extent from the relevant vertical passage 466 . Due to the lack of buoyancy, the closure body 50 sinks, the ventilation valve 5 assumes an open position.
  • the situation in the left side valve SV on the left is identical to the positions in the left side valve SV on the left according to Figure 4F as it would be immediately before the hydrant was used or immediately after it was taken out of service.

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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)
  • Check Valves (AREA)

Claims (10)

  1. Prise d'eau configurée sous forme de borne d'incendie pour l'installation dans un réseau de canalisations d'eau (9), comprenant:
    a) une partie supérieure (1) qui est réalisée sous forme de tube de tête, qui doit être installée de manière à dépasser au-dessus du sol et qui présente au moins un raccord de sortie (11) prévu pour le prélèvement d'eau;
    b) un prolongement de tige de soupape (2) disposé verticalement dans la partie supérieure (1);
    c) un tube montant (6) raccordé par le dessous à la partie supérieure (1), avec une tige de soupape (7) s'étendant verticalement dans celui-ci; à condition que:
    ca) la tige de soupape (7) est connectée d'une part au prolongement de tige de soupape (2) et forme conjointement avec celui-ci un agencement de tige de soupape (2,7); et
    cb) la tige de soupape (7) est d'autre part connectée à une soupape principale (8) qui conduit au réseau de canalisations d'eau (9) et qui peut être ajustée entre une position de fermeture et une position d'ouverture prévue pour le prélèvement d'eau;
    d) au moins un dispositif anti-reflux (3,4) prévu dans la partie supérieure (1) sous forme d'agencement mécanique avec un joint d'étanchéité (33,43) supporté par un ressort (31,41), qui est prévu pour fermer une surface d'étanchéité (16,360) située dans la trajectoire d'écoulement vers le réseau de canalisations d'eau (9); et
    e) une soupape de vidange (60) dans le tube montant (6), qui, lorsque la prise d'eau est arrêtée, est prévue pour effectuer une vidange automatique de l'eau accumulée dans la prise d'eau; à condition que:
    fa) la prise d'eau étant conçue sous forme de prise d'eau à une broche avec l'au moins un raccord de sortie (11) et l'agencement de tige de soupape (2,7) pour actionner la soupape principale (8); ou
    fb) la prise d'eau étant conçue sous forme de prise d'eau à trois broches avec deux raccords de sortie (11) et l'agencement de tige de soupape (2,7) pour actionner la soupape principale (8) et deux soupapes latérales (SVgauche,SVdroite ) pour réaliser à chaque fois une ouverture ou une fermeture séparée des deux raccords de sortie prévus (11); et
    fc) le dispositif anti-reflux (3,4) étant disposé dans le raccord de sortie respectif (11) de la partie supérieure (1) ou dans la soupape latérale respective (SVgauche,SVdroite ) de la partie supérieure (1);
    g) une soupape d'aération (5), qui:
    ga) lorsque la prise d'eau est arrêtée, permet avec la soupape principale fermée (8), l'afflux d'air ambiant dans la prise d'eau afin de permettre la vidange automatique de l'eau accumulée dans la prise d'eau par le biais de la soupape de vidange (60); et
    gb) lorsque la soupape principale (8) est ouverte, bloque le flux d'eau à travers la soupape d'aération (5) dans l'environnement; à condition que:
    h) la trajectoire d'écoulement pour l'air ambiant affluant dans la prise d'eau par le biais de la soupape d'aération (5) s'étend en contournant l'au moins un dispositif anti-reflux (3,4) disposé dans la partie supérieure (1) et l'au moins un raccord de sortie prévu (11), caractérisée en ce que
    i) la soupape d'aération (5) possède un corps de fermeture (50) réalisé sous forme de flotteur qui est incorporé dans l'extrémité supérieure d'un chapeau de broche (20) monté sur le prolongement de tige de soupape (2) et ferme ou ouvre une ouverture de ventilation (200) dans l'atmosphère.
  2. Prise d'eau configurée sous forme de bouche d'incendie souterraine pour l'installation dans un réseau de canalisations d'eau (9), comprenant:
    a) une partie supérieure (1) qui est réalisée sous forme de tête souterraine qui doit être enterrée conjointement avec un tube montant (6) et qui présente au moins un raccord de sortie (11) prévu pour le prélèvement d'eau;
    b) un prolongement de tige de soupape (2) disposé verticalement dans la partie supérieure (1);
    c) un tube montant (6) raccordé par le dessous à la partie supérieure (1), avec une tige de soupape (7) s'étendant verticalement dans celui-ci; à condition que:
    ca) la tige de soupape (7) est connectée d'une part au prolongement de tige de soupape (2) et forme conjointement avec celui-ci un agencement de tige de soupape (2,7); et
    cb) la tige de soupape (7) est d'autre part connectée à une soupape principale (8) qui conduit au réseau de canalisations d'eau (9) et qui peut être ajustée entre une position de fermeture et une position d'ouverture prévue pour le prélèvement d'eau;
    d) au moins un dispositif anti-reflux (3,4) prévu dans la partie supérieure (1) sous forme d'agencement mécanique avec un joint d'étanchéité (33,43) supporté par un ressort (31,41), qui est prévu pour fermer une surface d'étanchéité (16,360) située dans la trajectoire d'écoulement vers le réseau de canalisations d'eau (9); et
    e) une soupape de vidange (60) dans le tube montant (6), qui, lorsque la prise d'eau est arrêtée, est prévue pour effectuer une vidange automatique de l'eau accumulée dans la prise d'eau; à condition que:
    f) le dispositif anti-reflux (3,4) est disposé dans le raccord de sortie respectif (11) de la partie supérieure (1);
    g) une soupape d'aération (5), qui:
    ga) lorsque la prise d'eau est arrêtée, permet avec la soupape principale fermée (8), l'afflux d'air ambiant dans la prise d'eau afin de permettre la vidange automatique de l'eau accumulée dans la prise d'eau par le biais de la soupape de vidange (60); et
    gb) lorsque la soupape principale (8) est ouverte, bloque le flux d'eau à travers la soupape d'aération (5) dans l'environnement; à condition que
    h) la trajectoire d'écoulement pour l'air ambiant affluant dans la prise d'eau par le biais de la soupape d'aération (5) s'étend en contournant l'au moins un dispositif anti-reflux (3,4) disposé dans la partie supérieure (1) et l'au moins un raccord de sortie prévu (11), caractérisée en ce que
    i) la soupape d'aération (5) possède un corps de fermeture (50) réalisé sous forme de flotteur qui est incorporé dans l'extrémité supérieure d'un chapeau de broche (20) monté sur le prolongement de tige de soupape (2) et ferme ou ouvre une ouverture de ventilation (200) dans l'atmosphère.
  3. Prise d'eau selon les revendications 1 et 2, caractérisée en ce que le dispositif anti-reflux (3) prévu pour être installé dans un raccord de sortie (11) comprend:
    a) un boîtier (36) dont la paroi extérieure est étanchéifiée par rapport à la paroi intérieure du raccord de sortie (11); et
    b) un support (32) déplaçable axialement dans le boîtier (36), qui est supporté par le ressort (31) et qui est pourvu du joint d'étanchéité (33).
  4. Prise d'eau selon la revendication 3, caractérisée en ce que le dispositif anti-reflux (3) comprend en outre:
    a) une partie de guidage (30) qui est disposée fixement dans le boîtier (36) à côté de la sortie du raccord de sortie (11) et dans laquelle une extrémité du ressort (31) est enfoncée tandis que l'autre extrémité du ressort (31) agit sur le support (32); et
    b) la surface d'étanchéité (360) prévue sur le boîtier (36), qui est située à l'opposé de la sortie du raccord de sortie (11) et qui est fermée par le joint d'étanchéité (33) dans la position active en tant que dispositif anti-reflux (3).
  5. Prise d'eau selon au moins l'une quelconque des revendications 3 et 4, caractérisée en ce que le boîtier (36) est en forme de cartouche, lequel est ouvert à chaque fois vers la sortie du raccord de sortie (11) et vers la partie supérieure (1), la surface d'étanchéité (360) située dans la direction de la partie supérieure (1) étant formée par une dimension intérieure rétrécie.
  6. Prise d'eau selon au moins l'une quelconque des revendications 3 à 5, caractérisée en ce que
    a) le ressort (31) est un ressort hélicoïdal agissant en tant que ressort de compression;
    b) le support (32) possède un logement de ressort (321) contre lequel s'appuie le ressort (31) et une base de joint d'étanchéité en forme de disque (323) sur laquelle est disposé le joint d'étanchéité (33); et
    c) les composants du dispositif anti-reflux (3) sont configurés et disposés de telle sorte que:
    ca) dans la position agissant en tant que dispositif anti-reflux (3), la pression du milieu irrégulier appliqué contre le raccord de sortie (11) augmente la pression de pressage générée par le ressort (31) sur le joint d'étanchéité (33) et la surface d'étanchéité (360); et
    cb) lors du prélèvement d'eau hors du raccord de sortie (11), le joint d'étanchéité (33), sous l'effet de la pression d'écoulement, s'éloigne de la surface d'étanchéité (360) à l'encontre de l'action du ressort (31) et une voie d'écoulement libre se forme ainsi pour permettre la sortie de l'eau s'écoulant à travers le boîtier (36).
  7. Prise d'eau selon la revendication 1, caractérisée en ce que le dispositif anti-reflux (4) à chaque fois prévu pour être installé dans les deux soupapes latérales (SVgauche,SVdroite ) possède un boîtier (46) installé horizontalement dans la partie supérieure (1) avec un passage de broche (460) positionné centralement et à chaque fois un passage vertical (466) de chaque côté du passage de broche (460), où:
    a) le passage de broche (460) sert au passage vertical du prolongement de tige de soupape (2);
    b) les passages verticaux (466) sont à chaque fois prévus pour recevoir une partie de guidage fixe (40) avec un ressort enfiché (41) et un support (42) associé à celui-ci;
    c) la partie de guidage (40) est enfoncée de manière déplaçable sous forme télescopique dans le support (42) et le ressort (41) est serré entre un chapeau (427) fixé en haut sur le passage vertical concerné (466) et le support (42) en bas, qui est guidé de manière déplaçable axialement dans le passage vertical (466);
    d) le support (42) présente en dessous un joint d'étanchéité (43); et
    e) à l'intérieur de la partie supérieure (1), pour chacune des soupapes latérales (SVgauche,SVdroite ), il est prévu une surface d'étanchéité (16) qui est fermée par le joint d'étanchéité respectif (43) dans la position agissant en tant que dispositif anti-reflux (4).
  8. Prise d'eau selon la revendication 7, caractérisée en ce que
    a) le boîtier (46) est essentiellement en forme de plaque;
    b) la surface d'étanchéité respective (16) est formée par une dimension intérieure rétrécie dans la partie supérieure (1);
    c) le ressort (41) est un ressort hélicoïdal agissant en tant que ressort de compression;
    d) la partie de guidage (40) présente une forme en barre;
    e) à l'extrémité libre du support (42) est fixée une base de joint d'étanchéité en forme de disque (423) sur laquelle repose le joint d'étanchéité (43); et
    f) les composants du dispositif anti-reflux (4) sont configurés et disposés dans la soupape latérale respective (SVgauche,SVdroite ) de telle sorte que:
    fa) dans la position agissant en tant que dispositif anti-reflux (4), la pression du milieu irrégulier appliqué contre le raccord de sortie (11) augmente la pression de pressage générée par le ressort (41) sur le joint d'étanchéité (43) et la surface d'étanchéité (16); et
    fb) lors du prélèvement d'eau hors du raccord de sortie concerné (11), le joint d'étanchéité (43) se soulève de la surface d'étanchéité (16) sous l'effet de la pression d'écoulement à l'encontre de l'action du ressort (41) et une voie d'écoulement libre se forme ainsi pour permettre l'écoulement de l'eau à travers la surface d'étanchéité ouverte (16) jusqu'au raccord de sortie utilisé (11).
  9. Prise d'eau selon la revendication 1, caractérisée en ce que le dispositif anti-reflux (4) prévu dans chaque cas pour être installé dans les deux soupapes latérales (SVgauche,SVdroite ) présente un boîtier (46) installé horizontalement dans la partie supérieure (1) avec un passage de broche positionné centralement (460) et à chaque fois un passage vertical (466) de chaque côté du passage de broche (460), à condition que:
    a) le passage de broche (460) sert au passage vertical du prolongement de tige de soupape (2);
    b) les passages verticaux (466) sont prévus pour recevoir à chaque fois une broche de soupape latérale (25) rotative mais fixée axialement sur laquelle est vissé un contre-écrou (26) déplaçable axialement mais bloqué radialement, ainsi qu'un ressort (41) enfiché en dessous de celui-ci et un support (42) connecté à celui-ci;
    c) la partie à filetage extérieur de la broche de soupape latérale (25) est enfoncée dans le support (42) de manière déplaçable de manière télescopique et le ressort (41) est serré entre le contre-écrou (26) et un logement de ressort (421) fixé à l'intérieur dans le support (42);
    d) le support (42) est guidé de manière déplaçable axialement dans le passage vertical (466);
    e) le support (42) présente en dessous un joint d'étanchéité (43); et
    f) à l'intérieur de la partie supérieure (1) est prévue une surface d'étanchéité (16) pour chacune des soupapes latérales (SVgauche,SVdroite ), laquelle est fermée par le joint d'étanchéité respectif (43) dans la position active en tant que dispositif anti-reflux (4).
  10. Prise d'eau selon la revendication 9, caractérisée en ce que
    a) le boîtier (46) est essentiellement en forme de plaque;
    b) la surface d'étanchéité respective (16) est formée par une dimension intérieure rétrécie dans la partie supérieure (1);
    c) le ressort (41) est un ressort hélicoïdal agissant en tant que ressort de compression;
    d) la broche de soupape latérale (25), dont la partie à filetage extérieur pénètre dans le passage vertical (466), est fixée axialement dans un chapeau (427) fixé en haut sur le passage vertical (466);
    e) à l'extrémité libre du support (42) est fixée une base de joint d'étanchéité en forme de disque (423) sur laquelle repose le joint d'étanchéité (43); et
    f) les composants du dispositif anti-reflux (4) sont configurés et disposés dans la soupape latérale respective (SVgauche,SVdroite ) de telle sorte que:
    fa) dans la position agissant en tant que dispositif anti-reflux (4), la pression du milieu irrégulier appliqué contre le raccord de sortie (11) augmente la pression de pressage générée par le ressort (41) sur le joint d'étanchéité (43) et la surface d'étanchéité (16); et
    fb) lors du prélèvement d'eau hors du raccord de sortie concerné (11), le joint d'étanchéité (43) se soulève de la surface d'étanchéité (16) sous l'effet de la pression d'écoulement à l'encontre de l'action du ressort (41) et une voie d'écoulement libre se forme ainsi pour permettre l'écoulement de l'eau à travers la surface d'étanchéité ouverte (16) jusqu'au raccord de sortie utilisé (11).
EP18405011.0A 2017-05-02 2018-04-27 Bouche à eau pourvue de clapet antiretour dans la partie supérieure Active EP3399112B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00584/17A CH713755A1 (de) 2017-05-02 2017-05-02 Hydrant mit im Oberteil vorhandenem Rückflussverhinderer.

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EP3399112B1 true EP3399112B1 (fr) 2020-10-28

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Publication number Priority date Publication date Assignee Title
CN112982573B (zh) * 2021-03-09 2024-05-24 列斯丽(深圳)技术有限公司 自排水式消火栓结构及包含它的消防井

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Publication number Priority date Publication date Assignee Title
CH693067A5 (de) * 1998-08-26 2003-02-14 Von Roll Holding Ag Nebenabsperrorgan für Hydranten.
EP1010821A1 (fr) * 1998-12-19 2000-06-21 Heinz-Jürgen Pfitzner Clapet anti-retour pour bouche d'incendie
US7428910B2 (en) * 2002-12-04 2008-09-30 Davidson Hydrant Technologies, Inc. Breathable fire hydrant rod
US6910495B2 (en) * 2003-02-06 2005-06-28 Anthony P. Lafalce Backflow prevention system
US20090320933A1 (en) * 2008-06-27 2009-12-31 Davidson Sr Tom Randy Weeping System for Fire Hydrant Having a Protective Valve or Device
DE202012001007U1 (de) * 2012-02-01 2012-06-11 Awg Fittings Gmbh Standrohr mit Rückflussverhinderer und Belüftungsventil

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CH713755A1 (de) 2018-11-15

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