WO2022144287A1 - Hydranten-ventilsystem und hydrant mit solch einem system - Google Patents
Hydranten-ventilsystem und hydrant mit solch einem system Download PDFInfo
- Publication number
- WO2022144287A1 WO2022144287A1 PCT/EP2021/087418 EP2021087418W WO2022144287A1 WO 2022144287 A1 WO2022144287 A1 WO 2022144287A1 EP 2021087418 W EP2021087418 W EP 2021087418W WO 2022144287 A1 WO2022144287 A1 WO 2022144287A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrant
- sealing body
- sealing
- valve
- main valve
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims abstract description 127
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000000463 material Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 description 19
- 238000007689 inspection Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 229930040373 Paraformaldehyde Natural products 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
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
Definitions
- the present invention relates to a hydrant valve system, a hydrant base and a hydrant.
- Fire hydrants are connected to a water distribution system and represent a faucet for drawing water, thus allowing the fire brigade as well as public and private users to draw water from the water distribution system.
- the network pressure in the water distribution system is typically approx. 6 - 9 bars.
- Fire hydrants comprise a base with an interior and an exterior, with the water distribution system usually being provided via a water inlet pipe or a water inlet is connected to the interior. The water is drawn from the inside of the hydrant via lateral connections.
- hydrant main valves or Shut-off devices which can be arranged in the area or near the water inlet.
- Shut-off devices are z.
- Hydrant main valves which include an axially adjustable main valve body, which is provided with a sealing surface or a sealing seat of the hydrant can be sealed off.
- the main valve body can be fitted with a sealing surface of a removable in the main valve seat used in the hydrant, also known as the shuttle valve seat.
- the main valve body is a sealing element which seals with the sealing surface of the hydrant when the hydrant main valve is in a closed position.
- the main valve body is moved up or down across the sealing surface. This opens up a gap through which the water can flow from the water inlet on the floor into the interior of the lower part and thus of the hydrant.
- the main valve body can be coupled to a valve rod, through which the main valve body can be adjusted from the closed position to the open position and vice versa.
- the valve rod can be arranged axially inside the hydrant and operated manually via an actuating element, e.g. B. a spindle drive, can be adjusted. In this case, an externally applied manual rotation can be converted into an axial adjustment by means of the actuating element, via which the valve rod and the main valve body coupled thereto can be moved up or down axially.
- the lower part can have a housing at its lower end which defines a dead space into which the main valve body can be adjusted.
- the main hydrant valve is opened by moving the main valve body downwards.
- the line pressure in the water distribution system may be less than the pressure at the hydrant outlet.
- One cause of this may be a pressure drop in the water distribution system.
- Another reason for this can be an unintentional or intentional pushing back or Backflow of contaminated liquids are, namely liquids in the hydrant or outside the hydrant, z.
- B Liquids in a connected hose, in a fire truck, etc . , but also of liquids that are accidentally or intentionally pressed or poured into the hydrant. to be washed in .
- the hydrant master valve may be open, fluid from outside can enter the water distribution system.
- the water in the water distribution system can become contaminated.
- the object of the present invention is to specify a hydrant valve system, a lower part of a hydrant and a hydrant which do not have the disadvantage mentioned above.
- the hydrant valve system comprises a hydrant main valve, which comprises a main valve body and a valve seat, the main valve body being axially adjustable in relation to the valve seat, and a housing which defines a dead space into which the main valve body is adjustable.
- the hydrant valve system also includes a sealing body, which is provided in the dead space, the sealing body having a higher density than water.
- the invention provides a sealing body which is arranged in a dead space defined by a housing, this sealing body having a higher density than water.
- the sealing body In the closed state (closed position) of the hydrant main valve, the sealing body blocks access to the water distribution system. If liquid should remain in the dead space, the sealing body will also sink in the liquid medium in the dead space and block access to the water distribution system (sealed position). In the open state of the main valve, on the other hand, the sealing body is lifted from the aforementioned sealing position by the inflowing water. The sealing body strikes the main valve body that has been adjusted downwards. This advantageously prevents the sealing body from striking upwards in a sealing manner, so that the water flow continues to be reliably ensured.
- the sealing body has a density of more than 997 kg/m3.
- the sealing body has a higher density than water, which means that it sinks in the liquid medium.
- the water inlet can thus advantageously also be sealed in the liquid medium by the sealing body.
- the sealing body contains a rubber material.
- the material of the sealing body can be selected in such a way that an excellent seal is ensured with respect to the aforementioned inlet opening and/or the outlet opening defined above the dead space.
- the sealing body can be made entirely of rubber material.
- the sealing body can only be provided with rubber material on its surface.
- the sealing body can contain polyoxymethylene (POM).
- the sealing body is a ball.
- the sealing body in the form of a sphere can reliably seal the inlet opening and/or outlet opening. Sections in the area of the inlet opening and Outlet openings can be shaped to correspond to corresponding surface sections of the sphere in order to achieve a large-area seal.
- the hydrant valve system also includes a large number of sealing body guides, which are provided in the dead space, the sealing body guides being designed to guide the sealing body essentially vertically.
- the sealing body guides can be provided at equal angular distances from one another on the inner wall of the dead space, which are dimensioned such that the sealing body used can only be adjusted vertically. It can thus be ensured that the sealing body reliably comes into contact with sections in the area of the inlet opening and/or outlet opening and also reliably strikes the underside of the main valve body as soon as the hydrant main valve is opened.
- the sealing body guides are designed in one piece with the housing. This design can facilitate production and save costs.
- the housing has an inlet opening, the inner diameter of the housing at the inlet opening being smaller than the diameter of the sealing body.
- the inner surface of the housing can be provided with a sealing surface at the inlet opening.
- the sealing surface on the inlet opening can be shaped to correspond to corresponding surface sections of the sealing body.
- the inlet opening can connect to the water inlet on the floor, while the outlet opening can be arranged in the area of the main hydrant valve.
- the housing of the dead space may expand outwardly with increasing distance from both the inlet port and the outlet port. In other words, the housing can be approximately spherical or be bulbous.
- the diameter of the inlet opening can be the same as or larger than the diameter of the ball, in order to be able to introduce the ball into the dead space.
- the ball can come into contact with a sealing surface formed in the water inlet section.
- a seal can be provided which is interposed between the water inlet and the lower pipe of the hydrant.
- the seal can have a correspondingly shaped sealing surface with which the ball can come into sealing contact. The ball can thus make a tight fit at the water inlet or at the inlet opening (below) as soon as the main hydrant valve is closed.
- the ball can sit tightly against the inlet opening if the main valve is open and at the same time the line pressure is lower than the pressure at the hydrant outlet, for example due to a pressure drop in the water distribution system.
- the line pressure is lower than the pressure at the hydrant outlet, for example due to a pressure drop in the water distribution system.
- the sealing body can also lie tightly against the outlet opening (above), for example in the case of an inspection, repair or maintenance of the hydrant under mains pressure.
- the main valve body can be pushed out upwards over the valve seat.
- water begins to flow from bottom to top. This floods the sealing body in an upward direction until it shuts off below the valve seat or at the outlet opening. Since the ball has a larger diameter than the outlet opening in the area of the valve seat, the ball seals the water inflow into the hydrant.
- the sealing body can, for example, cling to the correspondingly shaped sealing surface in the upper region of the dead space in a sealing manner.
- the valve rod incl. Main valve bodies can now be removed from the hydrant and serviced outside the hydrant.
- the housing is designed in one piece with a lower part of a hydrant.
- the hydrant valve system can advantageously be integrated into the lower part.
- the valve seat is a shuttle valve seat.
- Fig. 1 a sectional view of a lower part of a hydrant with a first sealing insert to show a hydrant valve system in a closed position
- Fig. 2 a sectional view of a lower part of a hydrant with a first sealing insert to show a hydrant valve system in an open position
- Fig. 3 is a sectional view of a lower part of a hydrant with a first sealing insert to show a hydrant valve system in an open position during e.g. B. a pressure drop in the water distribution system,
- Fig. 4 is a sectional view of a lower part of a hydrant with a first sealing insert to show a hydrant valve system during e.g. B. a revision
- Fig. 5 is a sectional view of a base of a hydrant similar to FIG. 1 with a second sealing insert , and
- FIG. 6 is a sectional view of a base of a hydrant similar to FIG. 2 with a second sealing insert.
- FIGS. 1-6 each show a sectional view of a lower part 10 of a hydrant in the section of a lower end of the lower part 10 on the ground side. The views give a glimpse of a hydrant valve system 12 of the lower part 10 and show the hydrant valve system 12 in different positions or. waitresses .
- the hydrant valve system 12 includes a hydrant main valve 14 which has a main valve body 16 and a corresponding valve seat 18 and includes a sealing surface with which or which the main valve body 16 is sealingly abuttable as shown in FIGS. 1 and 5.
- the main valve body 16 is axially adjustable in relation to the valve seat 18 .
- the hydrant valve system 12 includes a dead space 20 defined by a housing 19 , into which the main valve body 16 can be adjusted to open the hydrant main valve 14 .
- the dead space 20 can be defined as a space provided substantially between the hydrant master valve 14 and a bottom water inlet 22 connected to a water distribution system (not shown).
- a sealing body 24 which is explained in more detail below, is provided, which in the example shown is a ball or Sealing ball is running.
- the housing 19 can be formed in one piece with the base 10 .
- the main valve body 16 is a sealing element which seals with the valve seat 18 when the hydrant main valve 14 is in a closed position.
- the main valve body 16 is moved downward, as shown in Figures 2 and 6.
- the main valve body 16 is provided with vanes 26', 26'' which axially guide its displacement by sliding along an inner surface portion of the base 10 and along the valve seat 18, respectively.
- an essentially annular gap opens up. Water flows through this gap from the bottom water inlet 22 via an inlet opening 28 of the lower part 10, through the dead space 20 and finally upwards into the interior of the hydrant, in order to then be removed from the outside.
- the main valve body 16 is coupled to a valve rod 30, via which the main valve body 16 can be vertically adjusted, for example from the closed position to the open position and vice versa.
- the valve rod 30 runs in the axial direction within the hydrant and can be adjusted by, for example, converting a manually applied torque into an axial adjustment by means of, for example, a spindle drive (not shown). As a result, the valve rod 30 and the main valve body 16 connected thereto are moved axially up or down.
- the sealing body 24 is provided in the dead space 20 of the hydrant valve system 12 .
- the sealing body 24 has a higher density as water. If the main hydrant valve 14 is shut off, the sealing body 24 seals the inlet opening 28 . If there is water or residual water in the dead space 20 , the sealing body 24 sinks into it and seals the inlet opening 28 .
- Sealing body guides 31′, 31′′ can be provided on the inner wall of the housing 19, which protrude into the dead space 20 in an essentially radially inward direction. These sealing body guides 31', 31'' are dimensioned and arranged in relation to one another in such a way that they can reliably guide the sealing body 24 in a vertical direction only. Although only two sealing body guides 31', 31'' are shown in the figures for illustrative reasons, for example four sealing body guides can be provided on the inner wall of the housing 19 at e.g. a uniform angular distance from one another, which are dimensioned such that the sealing body used 24 is only vertically adjustable.
- the sealing body guides 31', 31'' are preferably formed in one piece with the housing 19 or the lower part 10. Manufacturing costs can be saved as a result.
- the lower part 10 can have an inlet opening seal 32 in the form of a first sealing insert 32', for example a sealing ring (see FIGS. 1 to 4), or in the embodiment of a second sealing insert 32'', e.g. B. a sealing cone (see FIGS. 5 and 6).
- the sealing inserts 32', 32'' are arranged between the water inlet 22 and the underside of the lower part 10 and can e.g. B. essentially corresponding to corresponding surface sections of the (sitting on) sealing body 24 . This increases the sealing surface.
- a rubber material can be selected as the material for the sealing inserts 32 ′, 32 ′′.
- the diameter of the inlet opening 28 is equal to or larger than the diameter of the sealing body 24 , while the diameter of the water inlet 22 is smaller than the diameter of the sealing body 24 .
- the sealing body 24 can contain a rubber material.
- the inlet opening 28 is thus reliably sealed by the rubber material of the sealing body 24 seated thereon.
- the dead space 20 is subjected to a pressure substantially equal to atmospheric pressure. Since the applied line pressure in the water distribution system is higher, the water flows into the dead space 20 and the inflowing water pushes the sealing body 24 upwards, as shown in FIGS.
- the sealing body 24 here comes into contact with the underside of the main valve body 16 .
- This underside of the main valve body 16 can correspond to the corresponding surface section of the sealing body 24 be formed.
- the inflowing water flows around the sealing body 24 in the dead space 20 or along the exposed surface portion thereof, and then flows through the opened hydrant main valve 14 into the hydrant.
- the sealing body 24 is reliably pressed or flushed against the underside of the main valve body 16 all the time.
- the sealing body 24 falls down due to gravity. Due to its higher density than water, e.g. in this case water remaining in the dead space 20, the sealing body 24 also sinks reliably in the liquid medium and comes into reliable contact with the inlet opening seal 32 of the inlet opening 28 and seals it.
- Fig. 3 shows a sectional view of the lower part 10 to show the hydrant valve system 12 in a state in which the hydrant main valve 14 is open and at the same time the line pressure in the water distribution system is lower than the pressure at the hydrant outlet.
- This condition can occur, for example, when the main hydrant valve 14 is open and at the same time there is a drop in pressure in the water distribution system.
- This state can also occur, for example, when the main hydrant valve 14 is open and liquids, for example a possibly contaminated liquid, penetrate or are pressed into the hydrant from outside.
- the sealing body 24 sinks due to its higher density than water in the liquid medium, sits reliably on the inlet opening sealing surface 32 and thereby blocks the inlet opening 28 or the water inlet 22 laid on the floor. This reliably prevents unintentional or possibly intentional contamination of the water in the water distribution system.
- Fig. 4 shows a sectional view of the base 10 to show the hydrant valve system 12 during e.g. B. a revision .
- a revision can make it necessary to completely or partially remove the valve rod 30 together with the main valve body 16, also known as the linkage, in order to z. B. to subject the main valve body 16 to revision or to be able to carry out maintenance and/or revision on other components of the hydrant.
- the main valve body 16 is moved upwards until it is no longer in sealing contact with the valve seat 18 .
- the water flows from the water distribution system into the dead space 20 and presses or. floats the sealing body 24 upwards in the direction of an outlet opening 34 against which the sealing body 24 strikes.
- the outlet opening 34 can have an outlet opening sealing surface 36 which is shaped to correspond to corresponding surface sections of the pressed-on sealing body 24 .
- the sealing body 24 is pressed firmly against the outlet opening sealing surface 36 for the entire duration of the inspection. It penetrates here no water in the hydrant. In this way, the inspection work can advantageously also be carried out reliably under line pressure.
- the water distribution system does not need to be disrupted beforehand, possibly extensively. Further advantageously, no solid and/or liquid substances can penetrate into the water distribution system in this state either. Any solid and/or liquid substances introduced into the hydrant from the outside can be drained into the ground via a drainage opening 38 .
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)
- Taps Or Cocks (AREA)
- Lift Valve (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/269,608 US20240060279A1 (en) | 2020-12-29 | 2021-12-22 | Hydrant valve system, and hydrant having such a system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20217662.4A EP4023824A1 (de) | 2020-12-29 | 2020-12-29 | Hydranten-ventilsystem und hydrant mit solch einem system |
EP20217662.4 | 2020-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022144287A1 true WO2022144287A1 (de) | 2022-07-07 |
Family
ID=74003778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/087418 WO2022144287A1 (de) | 2020-12-29 | 2021-12-22 | Hydranten-ventilsystem und hydrant mit solch einem system |
Country Status (3)
Country | Link |
---|---|
US (1) | US20240060279A1 (de) |
EP (1) | EP4023824A1 (de) |
WO (1) | WO2022144287A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1010824A1 (de) * | 1998-12-19 | 2000-06-21 | Heinz-Jürgen Pfitzner | Hydrant mit Kugelabsperrvorrichtung |
DE20201884U1 (de) * | 2002-02-07 | 2003-06-12 | Nan Ges Fuer Mestechnik Und Pi | Hydrant/Standrohr-System |
DE102015108820A1 (de) * | 2015-06-03 | 2016-12-08 | Vag-Armaturen Gmbh | Rückflussgesicherter Hydrant |
-
2020
- 2020-12-29 EP EP20217662.4A patent/EP4023824A1/de active Pending
-
2021
- 2021-12-22 WO PCT/EP2021/087418 patent/WO2022144287A1/de active Application Filing
- 2021-12-22 US US18/269,608 patent/US20240060279A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1010824A1 (de) * | 1998-12-19 | 2000-06-21 | Heinz-Jürgen Pfitzner | Hydrant mit Kugelabsperrvorrichtung |
DE20201884U1 (de) * | 2002-02-07 | 2003-06-12 | Nan Ges Fuer Mestechnik Und Pi | Hydrant/Standrohr-System |
DE102015108820A1 (de) * | 2015-06-03 | 2016-12-08 | Vag-Armaturen Gmbh | Rückflussgesicherter Hydrant |
Also Published As
Publication number | Publication date |
---|---|
US20240060279A1 (en) | 2024-02-22 |
EP4023824A1 (de) | 2022-07-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60200483T2 (de) | Zyklonabscheider für veränderliche Durchflussraten | |
DE2350268A1 (de) | Filteranlage mit einstellventil | |
WO2018104411A2 (de) | Druckspülsystem für ein wc-becken | |
EP2447131B1 (de) | Ventilanordnung für die Abfuhr eines flüssigen Mediums und Verfahren zur Steuerung einer Ventilanordnung | |
WO2022144287A1 (de) | Hydranten-ventilsystem und hydrant mit solch einem system | |
DE3435778A1 (de) | Hydrant, insbesondere unterflurhydrant | |
DE69906440T2 (de) | Toilettenspülkasten mit induzierter Luft | |
DE202008011255U1 (de) | Systemtrenner II | |
EP3095500B1 (de) | Druckminderer-filter-anordnung | |
DE3242004C2 (de) | Wasserabscheider | |
EP3399112B1 (de) | Hydrant mit im oberteil vorhandenem rückflussverhinderer | |
EP2154300B1 (de) | Abwasserstation | |
DE102010052321A1 (de) | Lüftungsvorrichtung für einen Volumenkörper | |
DE2337853C2 (de) | Rückstau- und Geruchsverschluß für Flüssigkelten, Insbesondere Abwässer | |
DE102006015428A1 (de) | Be- und Entlüftungseinrichtung | |
DE3031520A1 (de) | Hydrant, insbesondere unterflur-hydrant | |
DE4243756C2 (de) | Hydrant | |
DE19932859C2 (de) | Aseptisches Pumpengehäuse mit schaltbarer Drainage | |
DE102012207200B4 (de) | Hydrant mit Steinfang | |
DE2635923C3 (de) | Muffenventil | |
DE19604163A1 (de) | Schutzbehälter mit Hausanschluß-Absperrventil an einer Unterdruck-Abwasserleitung | |
DE19835713A1 (de) | Armatur-Wechseleinheit | |
DE4341803C1 (de) | Ventil zur Ent- und Belüftung einer Abwasserleitung | |
DE7822735U1 (de) | Auslaufventil mit zwei durch einen ventilkegel voneinander trennbaren kammern | |
AT412841B (de) | Filteranlage und verfahren zum betreiben einer filteranlage |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21844009 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18269608 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023119884 Country of ref document: RU |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21844009 Country of ref document: EP Kind code of ref document: A1 |