EP4296441A1 - Underground hydrant and coupling for an underground hydrant - Google Patents
Underground hydrant and coupling for an underground hydrant Download PDFInfo
- Publication number
- EP4296441A1 EP4296441A1 EP22180719.1A EP22180719A EP4296441A1 EP 4296441 A1 EP4296441 A1 EP 4296441A1 EP 22180719 A EP22180719 A EP 22180719A EP 4296441 A1 EP4296441 A1 EP 4296441A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coupling
- hydrant
- mouth
- underground
- connection
- 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.)
- Pending
Links
- 238000010168 coupling process Methods 0.000 title claims abstract description 85
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 85
- 230000008878 coupling Effects 0.000 title claims abstract description 84
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000013011 mating Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 description 15
- 230000007797 corrosion Effects 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 206010061217 Infestation Diseases 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
Images
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
- E03B9/08—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
- E03B9/08—Underground hydrants
- E03B9/12—Stand-pipes
Definitions
- the present invention relates to a coupling for an underground hydrant and an underground hydrant with such a coupling.
- Underground hydrants are connected to a water distribution system and represent a fitting for withdrawing water, enabling the fire department as well as public and private users to withdraw water from the water distribution system.
- the network pressure in the water distribution system is typically approx. 6 - 9 bar.
- External standpipes are known, which are coupled to a coupling attached to them in the event of a desired water withdrawal from the underground hydrant. More precisely, one end of the standpipe is coupled to one end of the coupling, while the other end of the coupling is in turn connected to the outlet mouth of the casing pipe from the underground hydrant, or to the hydrant mouth of the underground hydrant.
- a main valve of the underground hydrant When a main valve of the underground hydrant is opened, the water flows via the casing pipe to the hydrant mouth and further into the standpipe.
- the standpipe can in turn contain at least one fitting at the further end through which the water can be ejected into a water hose connected to it.
- connection between the hydrant mouth and the coupling is created by means of a screw connection.
- the coupling is screwed to the casing pipe of the underground hydrant or to the hydrant mouth using screws (e.g. two screws).
- the conventional connection between the coupling and the hydrant mouth has proven to be disadvantageous.
- a disadvantage in the prior art is that the holes required for the screw connection on the coupling and on the hydrant body itself, ie in the area of the hydrant mouth, are not coated with any protective layer against corrosion, for example an epoxy coating, hot-dip galvanizing, etc.
- through-holes (e.g. on the coupling) and threaded holes (e.g. on the hydrant body) are added after the coupling and the hydrant body have been coated, for example in a coating system, since a coating adhering to the through-holes and threaded holes would otherwise be disruptive.
- the metal e.g. cast iron, is exposed in this area unprotected to the outside environment, which is usually damp and may contain salt water (de-icing salt). This means that rust infestation is particularly severe in these areas, which leads to premature decomposition.
- the hydrant body and coupling can be cast from ductile cast iron, while the screws can be made from a precious metal. Due to these different metals, corrosion in cast iron is further promoted. Due to early corrosion, the underground hydrant may fail or become unusable during operation. In the event of a fire, no extinguishing water can be used, which in the worst case can have life-threatening consequences. As a countermeasure, underground hydrants or at least components thereof often have to be replaced prematurely, which results in high costs. Another disadvantage is the time-consuming and expensive assembly steps for screwing the coupling to the hydrant mouth.
- the object of the present invention is therefore to provide a coupling for the fluid-tight coupling of a standpipe to a hydrant mouth of an underground hydrant and an underground hydrant with such a coupling, which do not have the disadvantages mentioned above.
- a coupling for fluid-tight coupling of a standpipe to a hydrant mouth of an underground hydrant is proposed, the coupling being designed to be coupled to the hydrant mouth of the underground hydrant by means of a bayonet connection.
- the coupling according to the present invention is advantageously characterized by the fact that it can be coated throughout with corrosion protection. Compared to the prior art, the coupling according to the invention is therefore much less affected by corrosion.
- the coupling according to the invention can be easily and reliably connected to the hydrant mouth of the underground hydrant.
- the coupling is placed on the hydrant mouth via its outer flange (eg on a flange thereof) and then turned in relation to this until a connection is established in the manner of a bayonet connection.
- This connection is established quickly and reliably and is characterized by low costs.
- a possible exchange of the coupling can also be carried out quickly and reliably in the field. By eliminating connecting elements, such as screws, different metals do not come together, meaning that the risk of corrosion is also significantly reduced. Overall, this enables a reliable and permanent connection of the coupling to the underground hydrant compared to the prior art.
- the coupling is further designed to be coupled to a counter-coupling piece of the standpipe by means of a claw coupling connection.
- the claw coupling connection allows a quick and reliable coupling between the standpipe and the coupling to be achieved.
- the coupling further comprises an outer flange which has an inner surface which is provided with elements which cooperate with counter-elements correspondingly formed on an outer peripheral surface of the hydrant mouth in such a way as to connect the coupling and the hydrant mouth to one another in the manner of a bayonet connection to pair.
- the outer flange can therefore first be placed on the hydrant mouth and then turned around in relation to it in the manner of a bayonet connection.
- the elements or formations on the inner surface of the outer flange engage with one another with the counter-elements or corresponding formations on the outer circumferential surface of the hydrant mouth in the manner of a bayonet connection.
- this connection does not require any additional connecting elements, such as screws.
- the inner surface of the outer flange is provided with at least one recess, which is formed with at least one correspondingly formed on the outer circumferential surface of the hydrant mouth Projection to be coupled in the manner of a bayonet connection.
- the inner surface of the outer flange is provided with at least one projection, which is designed to be coupled to at least one corresponding recess formed on the outer circumferential surface of the hydrant mouth in the manner of a bayonet connection.
- the outer flange is designed to come into contact with an elastic element attached to the hydrant mouth.
- the elastic element forces or locks the assembled coupling in a direction which is opposite to the direction for placing the coupling on the hydrant mouth.
- respective projections on the hydrant mouth or on the outer flange of the coupling are forced into corresponding recesses in the counter element, i.e. on the outer flange of the coupling or on the hydrant mouth, in the manner of a bayonet connection. This reliably locks or locks the coupling at the hydrant mouth.
- the elastic element comprises an O-ring attached to an outer peripheral surface of the hydrant mouth.
- the O-ring can be used against a surrounding projection Area of the hydrant mouth must be created. Additionally or alternatively, the O-ring can be fitted into a circumferential recess or groove.
- the invention also relates to an underground hydrant.
- the underground hydrant contains a hydrant mouth which is designed to be coupled to a coupling according to one of claims 1 to 7 by means of a bayonet connection.
- the underground hydrant according to the invention is advantageously characterized by the fact that it can be completely coated with corrosion protection in the area of the hydrant mouth. Compared to the prior art, the underground hydrant according to the invention is therefore much less affected by corrosion, which, among other things, prevents failure and reduces costs for, for example, maintenance and replacement.
- the underground hydrant according to the invention enables a quick and reliable coupling to a riser pipe by means of the coupling, which in turn is attached to the hydrant mouth by means of a bayonet connection.
- the coupling can be attached easily and without the use of tools.
- FIG. 1 an underground hydrant 10 according to the invention is shown in a sectional view.
- the underground hydrant 10 contains a jacket pipe 12, which is provided with a main valve 14 at its lower end.
- the main valve 14 includes a main valve body 16, which can be brought into sealing contact with a corresponding sealing surface 18.
- the main valve body 16 is adjustable in relation to the sealing surface 18 via a valve rod 20.
- the valve rod 20 is adjusted vertically via an adjusting device 22.
- the underground hydrant 10 is shown in the closed state. In the open state, water flows from an inlet (not shown) into the jacket pipe 20 and further to a hydrant mouth 24.
- the underground hydrant 10 also contains a coupling 26, via which a standpipe (not shown) can be coupled to the hydrant mouth 24 of the underground hydrant 10 .
- the coupling 26 is coupled to the hydrant mouth 24 by means of a bayonet connection. Compared to the prior art, no connecting elements, such as screws, are necessary.
- the underground hydrant 10 is advantageously characterized in that it can be provided or coated throughout with corrosion protection in the area of the hydrant mouth 24. Compared to the prior art, no through holes, blind holes, threaded holes, etc. are necessary for the connection between the underground hydrant 10 and coupling 26, which are left out of the corrosion protection and therefore corrode early. It should be mentioned that the expression “exempt from corrosion protection” means that the through holes, blind holes, threaded holes, etc. are not coated and therefore the metal is exposed to the outside environment unprotected.
- the underground hydrant 10 according to the invention and the coupling 26 according to the invention are much less affected by corrosion compared to the prior art, which, among other things, prevents failure or failure, as well as costs for maintenance and replacement can be greatly reduced.
- the bayonet lock connection advantageously allows quick and reliable assembly of the coupling 26 to the hydrant mouth 24.
- the coupling 26 can advantageously be assembled very easily and without the use of tools.
- An elastic element 28 can be placed on the outer circumference of the hydrant mouth 24, which can extend circumferentially around it in an area of the hydrant mouth 24.
- the elastic element 28 is reliably pressed against the circumference of the hydrant mouth 24 due to its elastic properties. Furthermore, the elastic element 28 rests against a projection 29, which can extend circumferentially around the hydrant mouth 24 (see Figures 2 and 4 ). The elastic element 28 is thus reliably supported by the projection 29.
- the coupling 26 is provided at its further end with coupling pieces 30', 30" as part of a claw coupling connection.
- the standpipe can be connected quickly and easily via a corresponding mating coupling piece (not shown). be coupled to the clutch 26.
- an outer flange 32 of the coupling 26 rests essentially circumferentially against the elastic element 28, or is thereby pressed elastically upwards.
- the outer flange 32 is provided on its inner surface with features which cooperate with correspondingly formed counter elements on an outer circumferential surface of the hydrant mouth 24 in order to couple the coupling 26 and the hydrant mouth 24 to one another in the manner of a bayonet connection.
- the inner surface of the outer flange 32 is provided with two recesses 36 ', 36'', which are formed with corresponding projections 34 ', 34" formed on the outer circumferential surface of the hydrant mouth 24 in the manner of one Bayonet lock connection.
- the inner surface of the outer flange 32 can be provided with at least one projection, which is designed to be coupled to at least one corresponding recess formed on the outer peripheral surface of the hydrant mouth in the manner of a bayonet lock connection
- the bayonet lock connection enables at least the hydrant mouth 24 of the underground hydrant 10 as well as the entire coupling 26 to be coated throughout with an anti-corrosion agent. This prevents rust.
- Fig. 4 shows a detailed view of the coupling 26 in the locked state with the hydrant mouth 24 in Sectional view.
- the elastic element 28 can be an O-ring that presses or forces the coupling 26 into the locking position. At the same time, the O-ring can create a fluid-tight seal from the outside environment.
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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)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
Die Erfindung betrifft eine Kupplung (26) zum fluiddichten Koppeln eines Standrohrs an eine Hydrantenmündung (24) eines Unterflurhydranten (10). Die Kupplung (26) ist ausgebildet, mittels einer Bajonettverschluss-Verbindung mit der Hydrantenmündung (24) des Unterflurhydranten (10) gekoppelt zu werden.The invention relates to a coupling (26) for fluid-tight coupling of a standpipe to a hydrant mouth (24) of an underground hydrant (10). The coupling (26) is designed to be coupled to the hydrant mouth (24) of the underground hydrant (10) by means of a bayonet connection.
Description
Die vorliegende Erfindung betrifft eine Kupplung für einen Unterflurhydranten sowie einen Unterflurhydranten mit einer solchen Kupplung.The present invention relates to a coupling for an underground hydrant and an underground hydrant with such a coupling.
Unterflurhydranten sind mit einem Wasserverteilungssystem verbunden und stellen eine Armatur zur Entnahme von Wasser dar, um somit der Feuerwehr als auch öffentlichen und privaten Nutzern die Wasserentnahme aus dem Wasserverteilungssystem zu ermöglichen. Der Netzdruck im Wasserverteilungssystem beträgt typischerweise ca. 6 - 9 bar.Underground hydrants are connected to a water distribution system and represent a fitting for withdrawing water, enabling the fire department as well as public and private users to withdraw water from the water distribution system. The network pressure in the water distribution system is typically approx. 6 - 9 bar.
Es sind externe Standrohre bekannt, welche im Falle einer gewünschten Wasserentnahme aus dem Unterflurhydranten mit einer hieran angebrachten Kupplung gekoppelt werden. Genauer gesagt, wird ein Ende des Standrohres mit einem Ende der Kupplung gekoppelt, während das andere Ende der Kupplung wiederum mit der Austrittsmündung des Mantelrohrs von dem Unterflurhydranten, bzw. mit der Hydrantenmündung des Unterflurhydranten, verbunden ist. Beim Öffnen eines Hauptventils des Unterflurhydranten strömt somit das Wasser über das Mantelrohr an die Hydrantenmündung und weiter in das Standrohr. Das Standrohr kann wiederum am weiteren Ende zumindest eine Armatur enthalten, über die das Wasser in einen hieran angeschlossenen Wasserschlauch ausgestossen werden kann.External standpipes are known, which are coupled to a coupling attached to them in the event of a desired water withdrawal from the underground hydrant. More precisely, one end of the standpipe is coupled to one end of the coupling, while the other end of the coupling is in turn connected to the outlet mouth of the casing pipe from the underground hydrant, or to the hydrant mouth of the underground hydrant. When a main valve of the underground hydrant is opened, the water flows via the casing pipe to the hydrant mouth and further into the standpipe. The standpipe can in turn contain at least one fitting at the further end through which the water can be ejected into a water hose connected to it.
Im Stand der Technik ist die Verbindung zwischen Hydrantenmündung und Kupplung mittels einer Schraubverbindung geschaffen. Genauer gesagt, ist die Kupplung über Schrauben (z.B. zwei Schrauben) mit dem Mantelrohr des Unterflurhydranten, bzw. mit der Hydrantenmündung verschraubt. Die herkömmliche Verbindung zwischen Kupplung und Hydrantenmündung hat sich als nachteilig herausgestellt.In the prior art, the connection between the hydrant mouth and the coupling is created by means of a screw connection. To be more precise, the coupling is screwed to the casing pipe of the underground hydrant or to the hydrant mouth using screws (e.g. two screws). The conventional connection between the coupling and the hydrant mouth has proven to be disadvantageous.
Ein Nachteil im Stand der Technik besteht darin, dass die für die Schraubverbindung notwendigen Bohrungen an der Kupplung und am Hydrantenkörper selber, d.h. im Bereich der Hydrantenmündung, mit keiner Schutzschicht gegen Korrosion, z.B. eine Epoxy-Beschichtung, Feuerverzinkung, usw., beschichtet sind. Herkömmlicherweise werden Durchsteckbohrungen (z.B. an der Kupplung) und Gewindebohrungen (z.B. am Hydrantenkörper) nach der Beschichtung der Kupplung und des Hydrantenkörpers, z.B. in einer Beschichtungsanlage, eingetragen, da eine an den Durchsteckbohrungen und Gewindebohrungen anhaftende Beschichtung ansonsten stören würde. Durch den fehlenden Korrosionsschutz in den Durchsteckbohrungen und Gewindebohrungen ist das Metall, z.B. Gusseisen, in diesem Bereich der zumeist feuchten und möglicherweise mit Salzwasser (Auftausalz) versetzten Aussenumgebung ungeschützt ausgesetzt. Somit ist der Rostbefall an diesen Bereichen besonders stark, wodurch es zu einer vorzeitigen Zersetzung kommt.A disadvantage in the prior art is that the holes required for the screw connection on the coupling and on the hydrant body itself, ie in the area of the hydrant mouth, are not coated with any protective layer against corrosion, for example an epoxy coating, hot-dip galvanizing, etc. Conventionally, through-holes (e.g. on the coupling) and threaded holes (e.g. on the hydrant body) are added after the coupling and the hydrant body have been coated, for example in a coating system, since a coating adhering to the through-holes and threaded holes would otherwise be disruptive. Due to the lack of corrosion protection in the push-through holes and threaded holes, the metal, e.g. cast iron, is exposed in this area unprotected to the outside environment, which is usually damp and may contain salt water (de-icing salt). This means that rust infestation is particularly severe in these areas, which leads to premature decomposition.
Eine weitere Korrosionsanfälligkeit im Bereich der Durchsteckbohrungen und Gewindebohrungen wird zudem durch unterschiedliche Metalle bzw. Metalllegierungen hervorgerufen. So können z.B. der Hydrantenkörper und die Kupplung aus duktilem Gusseisen gegossen sein, während die Schrauben aus einem Edelmetall gefertigt sein können. Bedingt durch diese unterschiedlichen Metalle wird Korrosion im Gusseisen zusätzlich gefördert. Aufgrund der frühzeitigen Korrosion kann der Unterflurhydrant im Betrieb versagen bzw. unbrauchbar sein. Im Falle eines Brandes kann somit kein Löschwasser entnommen werden, was im schlimmsten Fall lebensbedrohliche Folgen haben kann. Als Gegenmassnahme müssen herkömmlicherweise Unterflurhydranten oder wenigsten Bauteile hiervon oftmals vorzeitig ausgetauscht werden, wodurch hohe Kosten entstehen. Ein weiterer Nachteil besteht in den zeitaufwändigen und teuren Montageschritten zum Anschrauben der Kupplung an die Hydrantenmündung.Another susceptibility to corrosion in the area of through-holes and threaded holes is caused by different metals or metal alloys. For example, the hydrant body and coupling can be cast from ductile cast iron, while the screws can be made from a precious metal. Due to these different metals, corrosion in cast iron is further promoted. Due to early corrosion, the underground hydrant may fail or become unusable during operation. In the event of a fire, no extinguishing water can be used, which in the worst case can have life-threatening consequences. As a countermeasure, underground hydrants or at least components thereof often have to be replaced prematurely, which results in high costs. Another disadvantage is the time-consuming and expensive assembly steps for screwing the coupling to the hydrant mouth.
Die Aufgabe der vorliegenden Erfindung besteht daher darin, eine Kupplung zum fluiddichten Koppeln eines Standrohrs an eine Hydrantenmündung eines Unterflurhydranten sowie einen Unterflurhydranten mit einer solchen Kupplung anzugeben, welche die vorstehend genannten Nachteile nicht aufweisen.The object of the present invention is therefore to provide a coupling for the fluid-tight coupling of a standpipe to a hydrant mouth of an underground hydrant and an underground hydrant with such a coupling, which do not have the disadvantages mentioned above.
Diese Aufgabe wird durch eine Kupplung gemäss Patentanspruch 1 sowie einen Unterflurhydranten gemäss Patentanspruch 8 gelöst. Vorteilhafte Ausführungsvarianten sind in weiteren Patentansprüchen angegeben.This task is solved by a coupling according to claim 1 and an underground hydrant according to claim 8. Advantageous embodiment variants are specified in further patent claims.
Erfindungsgemäss ist eine Kupplung zum fluiddichten Koppeln eines Standrohrs an eine Hydrantenmündung eines Unterflurhydranten vorgeschlagen, wobei die Kupplung dazu ausgebildet ist, mittels einer Bajonettverschluss-Verbindung mit der Hydrantenmündung des Unterflurhydranten gekoppelt zu werden.According to the invention, a coupling for fluid-tight coupling of a standpipe to a hydrant mouth of an underground hydrant is proposed, the coupling being designed to be coupled to the hydrant mouth of the underground hydrant by means of a bayonet connection.
Die Kupplung gemäss der vorliegenden Erfindung zeichnet sich vorteilhaft dadurch aus, dass sie durchgängig mit einem Korrosionsschutz beschichtet werden kann. Gegenüber dem Stand der Technik wird die erfindungsgemässe Kupplung daher weitaus geringer von Korrosion befallen. Zudem kann die erfindungsgemässe Kupplung einfach und zuverlässig mit der Hydrantenmündung des Unterflurhydranten verbunden werden. Hierzu wird die Kupplung über ihren Aussenflansch auf die Hydrantenmündung (z.B. auf einen Flansch hiervon) aufgesetzt und dann in Relation hierzu umdreht, bis sich eine Verbindung auf Art und Weise einer Bajonettverschluss-Verbindung einstellt. Diese Verbindung ist schnell und zuverlässig hergestellt und zeichnet sich durch geringe Kosten aus. Auch ist ein möglicher Austausch der Kupplung auch im Felde rasch und zuverlässig realisierbar. Durch den Wegfall von Verbindungselementen, z.B. Schrauben, treffen keine unterschiedlichen Metalle zusammen, sodass zusätzlich die Korrosionsgefahr wesentlich reduziert ist. Somit ist insgesamt eine gegenüber dem Stand der Technik zuverlässige und dauerhafte Verbindung der Kupplung an den Unterflurhydranten ermöglicht.The coupling according to the present invention is advantageously characterized by the fact that it can be coated throughout with corrosion protection. Compared to the prior art, the coupling according to the invention is therefore much less affected by corrosion. In addition, the coupling according to the invention can be easily and reliably connected to the hydrant mouth of the underground hydrant. For this purpose, the coupling is placed on the hydrant mouth via its outer flange (eg on a flange thereof) and then turned in relation to this until a connection is established in the manner of a bayonet connection. This connection is established quickly and reliably and is characterized by low costs. A possible exchange of the coupling can also be carried out quickly and reliably in the field. By eliminating connecting elements, such as screws, different metals do not come together, meaning that the risk of corrosion is also significantly reduced. Overall, this enables a reliable and permanent connection of the coupling to the underground hydrant compared to the prior art.
In einer bevorzugten Ausführungsform ist die Kupplung ferner dazu ausgebildet, mittels einer Klauenkupplung-Verbindung mit einem Gegenkupplungsstück des Standrohrs gekoppelt zu werden. Durch die Klauenkupplung-Verbindung kann eine schnelle und zuverlässige Kopplung zwischen dem Standrohr und der Kupplung realisiert werden.In a preferred embodiment, the coupling is further designed to be coupled to a counter-coupling piece of the standpipe by means of a claw coupling connection. The claw coupling connection allows a quick and reliable coupling between the standpipe and the coupling to be achieved.
In einer bevorzugten Ausführungsform umfasst die Kupplung ferner einen Aussenflansch, welcher eine Innenfläche hat, welche mit Elementen versehen ist, welche mit an einer Aussenumfangsfläche der Hydrantenmündung korrespondierend ausgebildeten Gegenelementen derart zusammenwirken, um die Kupplung und die Hydrantenmündung auf Art und Weise einer Bajonettverschluss-Verbindung miteinander zu koppeln. Der Aussenflansch kann somit zunächst auf die Hydrantenmündung aufgesetzt und dann in Relation hierzu auf Art und Weise einer Bajonettverschluss-Verbindung umdreht werden. Hierbei gelangen die Elemente bzw. Ausformungen an der Innenfläche des Aussenflansches mit den Gegenelementen bzw. korrespondierenden Ausformungen an der Aussenumfangsfläche der Hydrantenmündung auf Art und Weise einer Bajonettverschluss-Verbindung miteinander in Eingriff. Vorteilhafterweise benötigt diese Verbindung keine zusätzlichen Verbindungselemente, wie z.B. Schrauben.In a preferred embodiment, the coupling further comprises an outer flange which has an inner surface which is provided with elements which cooperate with counter-elements correspondingly formed on an outer peripheral surface of the hydrant mouth in such a way as to connect the coupling and the hydrant mouth to one another in the manner of a bayonet connection to pair. The outer flange can therefore first be placed on the hydrant mouth and then turned around in relation to it in the manner of a bayonet connection. Here, the elements or formations on the inner surface of the outer flange engage with one another with the counter-elements or corresponding formations on the outer circumferential surface of the hydrant mouth in the manner of a bayonet connection. Advantageously, this connection does not require any additional connecting elements, such as screws.
In einer bevorzugten Ausführungsform der vorgeschlagenen Kupplung ist die Innenfläche des Aussenflansches mit wenigstens einer Ausnehmung versehen, welche ausgebildet ist, mit wenigstens einen korrespondierend an der Aussenumfangsfläche der Hydrantenmündung ausgeformten Vorsprung auf Art und Weise einer Bajonettverschluss-Verbindung gekoppelt zu werden.In a preferred embodiment of the proposed coupling, the inner surface of the outer flange is provided with at least one recess, which is formed with at least one correspondingly formed on the outer circumferential surface of the hydrant mouth Projection to be coupled in the manner of a bayonet connection.
In einer alternativen Ausführungsform der vorgeschlagenen Kupplung ist die Innenfläche des Aussenflansches mit wenigstens einem Vorsprung versehen, welcher ausgebildet ist, mit wenigstens einer korrespondierend an der Aussenumfangsfläche der Hydrantenmündung ausgeformten Ausnehmung auf Art und Weise einer Bajonettverschluss-Verbindung gekoppelt zu werden.In an alternative embodiment of the proposed coupling, the inner surface of the outer flange is provided with at least one projection, which is designed to be coupled to at least one corresponding recess formed on the outer circumferential surface of the hydrant mouth in the manner of a bayonet connection.
In einer bevorzugten Ausführungsform der vorgeschlagenen Kupplung ist der Aussenflansch dazu ausgebildet, mit einem an der Hydrantenmündung angebrachten elastischen Element in Anlage zu gelangen. Das elastische Element zwängt bzw. verriegelt die montierte Kupplung in eine Richtung, welche der Richtung zum Aufsetzen der Kupplung auf die Hydrantenmündung entgegengesetzt ist. Somit werden jeweilige Vorsprünge an der Hydrantenmündung oder am Aussenflansch der Kupplung auf Art und Weise einer Bajonettverschluss-Verbindung in korrespondierende Ausnehmungen des Gegenelements, d.h. am Aussenflansch der Kupplung oder an der Hydrantenmündung, gezwängt. Hierdurch wird die Kupplung zuverlässig an der Hydrantenmündung arretiert bzw. verriegelt.In a preferred embodiment of the proposed coupling, the outer flange is designed to come into contact with an elastic element attached to the hydrant mouth. The elastic element forces or locks the assembled coupling in a direction which is opposite to the direction for placing the coupling on the hydrant mouth. Thus, respective projections on the hydrant mouth or on the outer flange of the coupling are forced into corresponding recesses in the counter element, i.e. on the outer flange of the coupling or on the hydrant mouth, in the manner of a bayonet connection. This reliably locks or locks the coupling at the hydrant mouth.
In einer bevorzugten Ausführungsform der vorgeschlagenen Kupplung umfasst das elastische Element einen an einer Aussenumfangsfläche der Hydrantenmündung angebrachten O-Ring. Der O-Ring kann gegen einen umlaufenden Vorsprung im Bereich der Hydrantenmündung angelegt werden. Zusätzlich oder alternativ kann der O-Ring in eine umlaufende Aussparung bzw. Nut eingepasst werden.In a preferred embodiment of the proposed coupling, the elastic element comprises an O-ring attached to an outer peripheral surface of the hydrant mouth. The O-ring can be used against a surrounding projection Area of the hydrant mouth must be created. Additionally or alternatively, the O-ring can be fitted into a circumferential recess or groove.
Die Erfindung betrifft ebenfalls einen Unterflurhydranten. Der Unterflurhydrant enthält eine Hydrantenmündung, welche zur Kopplung mit einer Kupplung nach einem der Ansprüche 1 bis 7 mittels einer Bajonettverschluss-Verbindung ausgebildet ist. Der erfindungsgemässe Unterflurhydrant zeichnet sich dadurch vorteilhaft aus, dass er im Bereich der Hydrantenmündung durchgängig mit einem Korrosionsschutz beschichtet sein kann. Gegenüber dem Stand der Technik wird der erfindungsgemässe Unterflurhydrant somit weitaus geringer von Korrosion befallen, wodurch u.a. ein Ausfall vermieden wird und Kosten für z.B. Wartung und Austausch reduziert werden.The invention also relates to an underground hydrant. The underground hydrant contains a hydrant mouth which is designed to be coupled to a coupling according to one of claims 1 to 7 by means of a bayonet connection. The underground hydrant according to the invention is advantageously characterized by the fact that it can be completely coated with corrosion protection in the area of the hydrant mouth. Compared to the prior art, the underground hydrant according to the invention is therefore much less affected by corrosion, which, among other things, prevents failure and reduces costs for, for example, maintenance and replacement.
Zudem ermöglicht der erfindungsgemässe Unterflurhydrant eine schnelle und zuverlässige Kopplung mit einem Steigrohr mittels der Kupplung, welche wiederum mittels einer Bajonettverschluss-Verbindung an die Hydrantenmündung angebracht wird. Durch den Wegfall von zusätzlichen Verbindungselementen, z.B. Schrauben, kann die Kupplung einfach und ohne den Einsatz von Werkzeugen angebracht werden.In addition, the underground hydrant according to the invention enables a quick and reliable coupling to a riser pipe by means of the coupling, which in turn is attached to the hydrant mouth by means of a bayonet connection. By eliminating the need for additional connecting elements, such as screws, the coupling can be attached easily and without the use of tools.
Es wird ausdrücklich darauf hingewiesen, dass die vorstehenden Ausführungsvarianten beliebig kombinierbar sind. Lediglich diejenigen Kombinationen von Ausführungsvarianten sind ausgeschlossen, die durch die Kombination zu Widersprüchen führen würden.It is expressly pointed out that the above design variants can be combined in any way. Only those combinations of Design variants that would lead to contradictions due to the combination are excluded.
Im Folgenden wird die vorliegende Erfindung anhand von in der Zeichnung dargestellten Ausführungsbeispielen weiter erläutert. Dabei zeigen:
- Fig. 1
- eine Perspektivansicht in Schnittdarstellung von einem Unterflurhydranten gemäss der vorliegenden Erfindung,
- Fig. 2
- eine Ansicht auf eine Hydrantenmündung des Unterflurhydranten,
- Fig. 3
- eine Kupplung gemäss der vorliegenden Erfindung in einer Schnittdarstellung, und
- Fig. 4
- eine Schnittdarstellung, in welcher die auf die Hydrantenmündung montierte Kupplung gezeigt ist.
- Fig. 1
- a perspective view in section of an underground hydrant according to the present invention,
- Fig. 2
- a view of a hydrant mouth of the underground hydrant,
- Fig. 3
- a coupling according to the present invention in a sectional view, and
- Fig. 4
- a sectional view showing the coupling mounted on the hydrant mouth.
In
Der Unterflurhydrant 10 zeichnet sich dadurch vorteilhaft aus, dass er im Bereich der Hydrantenmündung 24 durchgängig mit einem Korrosionsschutz versehen bzw. beschichtet sein kann. Gegenüber dem Stand der Technik sind zur Verbindung zwischen Unterflurhydrant 10 und Kupplung 26 keine Durchgangsbohrungen, Sacklöcher, Gewindebohrungen, usw. hieran notwendig, welche vom Korrosionsschutz ausgelassen sind und daher frühzeitig korrodieren. Es ist zu erwähnen, dass mit dem Ausdruck "vom Korrosionsschutz ausgelassen" gemeint ist, dass die Durchgangsbohrungen, Sacklöcher, Gewindebohrungen, usw. nicht beschichtet sind und somit das Metall ungeschützt der Aussenumgebung ausgesetzt ist.The
Insgesamt werden der erfindungsgemässe Unterflurhydrant 10 sowie die erfindungsgemässe Kupplung 26 gegenüber dem Stand der Technik weitaus geringer von Korrosion befallen, wodurch u.a. ein Versagen oder Ausfall vermieden wird, sowie Kosten für Wartung und Austausch stark reduziert werden. Ferner vorteilhaft gestattet die Bajonettverschluss-Verbindung eine rasche und zuverlässige Montage der Kupplung 26 an die Hydrantenmündung 24. Die Kupplung 26 kann vorteilhafterweise sehr einfach und ohne Zuhilfenahme von Werkzeugen montiert werden.Overall, the
Am Aussenumfang der Hydrantenmündung 24 kann ein elastisches Element 28 angelegt sein, welches sich in einem Bereich der Hydrantenmündung 24 umfänglich hierum erstrecken kann. Das elastische Element 28 wird durch seine elastische Eigenschaft zuverlässig gegen den Umfang der Hydrantenmündung 24 gedrückt. Ferner liegt das elastische Element 28 gegen einen Vorsprung 29 an, welcher sich umfänglich um die Hydrantenmündung 24 erstrecken kann (siehe
Die Kupplung 26 ist an ihrem weiteren Ende mit Kupplungsstücken 30',30" als Teil einer Klauenkupplung-Verbindung versehen. Durch die Kupplungsstücke 30',30" der Klauenkupplung-Verbindung kann das Standrohr über ein korrespondierendes Gegenkupplungsstück hiervon (nicht gezeigt) rasch und einfach mit der Kupplung 26 gekoppelt werden.The
Ein unterer Rand von einem Aussenflansch 32 der Kupplung 26 liegt im montierten Zustand im Wesentlichen umfänglich gegen das elastische Element 28 an, bzw. wird hierdurch elastisch nach oben gedrückt. Hierdurch werden Vorsprünge 34',34" der Bajonettverschluss-Verbindung (siehe
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP22180719.1A EP4296441A1 (en) | 2022-06-23 | 2022-06-23 | Underground hydrant and coupling for an underground hydrant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP22180719.1A EP4296441A1 (en) | 2022-06-23 | 2022-06-23 | Underground hydrant and coupling for an underground hydrant |
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EP4296441A1 true EP4296441A1 (en) | 2023-12-27 |
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EP22180719.1A Pending EP4296441A1 (en) | 2022-06-23 | 2022-06-23 | Underground hydrant and coupling for an underground hydrant |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH387560A (en) * | 1960-04-06 | 1965-01-31 | Rheinisches Metallwerk Gmbh | Underground hydrant protected against frost |
DE7307524U (en) * | 1973-02-28 | 1973-06-07 | Waldenmaier J Erben Sueddeutsche Armaturenfabrik | ABOVE FLOOR HYDRANT IN PERFORMANCE |
DE20315710U1 (en) * | 2003-10-13 | 2003-12-18 | Hawle Armaturen Gmbh | Pillar type of water hydrant has a one piece construction lower housing with a shaped bottom end with a bayonet coupling to the underground water main |
DE102015204182A1 (en) * | 2015-03-09 | 2016-05-04 | Awg Fittings Gmbh | Backflow preventer for underfloor hydrant, underfloor hydrant and standpipe for underfloor hydrant |
-
2022
- 2022-06-23 EP EP22180719.1A patent/EP4296441A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH387560A (en) * | 1960-04-06 | 1965-01-31 | Rheinisches Metallwerk Gmbh | Underground hydrant protected against frost |
DE7307524U (en) * | 1973-02-28 | 1973-06-07 | Waldenmaier J Erben Sueddeutsche Armaturenfabrik | ABOVE FLOOR HYDRANT IN PERFORMANCE |
DE20315710U1 (en) * | 2003-10-13 | 2003-12-18 | Hawle Armaturen Gmbh | Pillar type of water hydrant has a one piece construction lower housing with a shaped bottom end with a bayonet coupling to the underground water main |
DE102015204182A1 (en) * | 2015-03-09 | 2016-05-04 | Awg Fittings Gmbh | Backflow preventer for underfloor hydrant, underfloor hydrant and standpipe for underfloor hydrant |
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