DE102020121431A1 - Safety device for a sensory sprinkler, set and sprinkler system with a corresponding safety device and fastening element for a sensory sprinkler - Google Patents

Abstract

The invention discloses a safety device for a sensory sprinkler that makes it possible to replace a sprinkler in the event of mechanical damage to a sprinkler without it being necessary to depressurize the entire pipeline system. A special aqua stop device is disclosed for this purpose. Furthermore, the invention allows a simpler and quicker attachment of standardized sprinklers to pipeline systems via a plug-and-swivel connection. In addition, an assembly tool for assembling the safety device is disclosed.

Description

field of invention

The invention relates to stationary fire protection systems with sensory sprinkler extinguishing systems.

State of the art

According to the state of the art, stationary fire protection systems with sensory sprinkler extinguishing systems for precise fire fighting are known. For this purpose, sprinklers are attached to the pipes in a permanently installed pipe system at defined intervals, so that the sprinkler is either screwed directly into the pipe or attached or screwed in using a clamp or a welded-in sleeve via an opening in the pipe. The submitted patent application deals with the assembly using a pipe clamp.

According to the state of the art, a sprinkler is mounted directly or indirectly via an opening in the pipe over the area to be extinguished, which is closed by a sensor to prevent water from escaping. This sensor is preferably a glass bulb that closes the sprinkler heads. The small, temperature-sensitive trigger elements can consist of a nozzle body, a seal, a glass bulb that gives it its name, and a deflector. The glass bulb contains a slightly boiling, colored special liquid with an enclosed air bubble. In the event of a fire, the liquid heats up and, as a result of expansion, causes the glass bulb to burst. The small container is thrown away, the nozzle opens and the extinguishing water begins to emerge from the water pipe network of the sprinkler system. In the event of a fire, only those sprinklers whose glass bulbs have reached the triggering temperature open selectively.

However, it also happens that sprinklers are activated for other reasons. This includes mechanical damage to the sprinkler, technical failure, improper, unintentional triggering of the system or accidental opening of the sprinkler by an employee. This leads to massive water damage, which is not covered by fire insurance and only partially covered by mains water insurance.

It is also the case that to replace a single sprinkler, the entire system must be depressurized and drained completely, resulting in relatively long downtime, a lot of labor and a large loss of water.

Incidentally, the initial installation of a fire protection system with sensory extinguishing systems is complex, takes a lot of time and has to be carried out under difficult conditions. According to the state of the art, the sprinkler is wrapped with a Teflon tape on the thread in order to seal the existing system. If an extinguishing bell (shelf sprinkler) is also used, this must be placed over the sprinkler, with the threaded area of the sprinkler then being wrapped with the Teflon and now carefully screwed into the existing system. Up to now, a damaged extinguishing bell can only be replaced if the entire system is depressurized and the water is drained.

Description of the invention

It is an object of the present invention to improve stationary fire protection systems with sensory sprinkler extinguishing systems. It is a particular object of the invention to facilitate replacement of damaged sprinklers.

It is another object of the invention to allow damaged sprinklers to be replaced in a pressurized system.

It is another object of the invention to prevent water damage not attributable to fire or fire.

It is another object of the invention to allow for quicker and easier initial installation of sprinklers.

The object is solved by the subject matter of the independent patent claims.

Preferred embodiments of the invention emerge from the dependent patent claims.

• - eine Rohrschelle zum Umschließen eines Wasserrohres;
• - ein Verschlussmittel mit einer zentralen Öffnung und mit einem Schellenanschlussbereich, der einen umlaufenden ringförmigen Graben aufweist, in den ein Stutzen der Rohrschelle, die ein Wasserrohr umschließen kann, aufnehmbar ist, wobei der Schellenanschlussbereich mit dem Stutzen der Rohrschelle mittels einer Steck-Dreh-Verbindung verbindbar ist;
• - eine Sicherheitsmuffe, wobei die Sicherheitsmuffe im Wesentlichen als Doppelzylinder mit unterschiedlichen Zylinderdurchmessern ausgebildet ist, wobei innen in dem Wasserrohr-seitigen Zylinder das Verschlussmittel mit der Sicherheitsmuffe verschraubbar ist, und wobei innen in dem Wasserrohr abgewandten Zylinder ein Sprinkler mit der Sicherheitsmuffe verschraubbar ist; und
• - eine im Wesentlichen hohlzylindrische Aqua-Stopp-Vorrichtung, die in die zentrale Öffnung des Verschlussmittels montierbar ist;
• - wobei die Aqua-Stopp-Vorrichtung an ihrem Wasserrohr-seitigen Ende ein tellerartiges Abschlusselement aufweist, das in ein Wasserrohr hineinragen kann,
• - wobei die Aqua-Stopp-Vorrichtung an ihrem dem Wasserrohr abgewandten Ende im Wesentlichen offen ist, so dass ein im Wesentlichen ungehinderter Wasserfluss von der Aqua-Stopp-Vorrichtung zu einem Sprinkler ermöglich ist,
• - wobei die Sicherheitsmuffe ein Sicherheitselement zum Auslösen der Aqua-Stopp-Vorrichtung aufweist,
• - wobei die Sicherheitsmuffe einen Anlagebereich für eine direkte oder indirekte Anlage der Aqua-Stopp-Vorrichtung bei nicht ausgelöstem Aqua-Stopp aufweist,
• - wobei die Aqua-Stopp-Vorrichtung in der Sicherheitsmuffe bei ausgelöstem Aqua-Stopp verschiebbar ist,
• - wobei die Aqua-Stopp-Vorrichtung in ihrem Zylindermantel mindestens eine Öffnung für eine hinreichende Wasserzufuhr von einem Wasserrohr in den Hohlzylinder bei nicht ausgelöstem Aqua-Stopp aufweist, und
• - wobei das tellerartige Abschlusselement so geformt ist, dass es bei ausgelöstem Aqua-Stopp in dichtende Anlage mit dem Verschlussmittel kommt und die mindestens eine Öffnung verschließt.

According to a first aspect of the invention, it relates to a safety device for a sensory sprinkler, comprising:

• - A pipe clamp for enclosing a water pipe;
• - a closure means with a central opening and with a clamp connection area, which has a circumferential annular trench in which a socket of the pipe clamp, which can enclose a water pipe, can be received, the clamp connection area being connected to the socket of the pipe clamp by means of a push-pull connection is connectable;
• - a safety sleeve, wherein the safety sleeve is essentially designed as a double cylinder with different cylinder diameters, wherein the locking means can be screwed to the safety sleeve inside the cylinder on the water pipe side, and a sprinkler can be screwed to the safety sleeve inside the cylinder facing away from the water pipe; and
• - a substantially hollow-cylindrical aqua-stop device mountable in the central opening of the closure means;
• - wherein the aqua-stop device has a plate-like closing element at its water pipe-side end, which can protrude into a water pipe,
• - wherein the aqua-stop device is essentially open at its end remote from the water pipe, so that a substantially unimpeded flow of water from the aqua-stop device to a sprinkler is possible,
• - wherein the safety sleeve has a safety element for triggering the aqua-stop device,
• - wherein the safety sleeve has a contact area for a direct or indirect contact of the aqua-stop device when the aqua-stop has not been triggered,
• - the aqua-stop device in the safety sleeve can be moved when the aqua-stop is triggered,
• - wherein the aqua-stop device has at least one opening in its cylinder jacket for a sufficient supply of water from a water pipe into the hollow cylinder when the aqua-stop is not triggered, and
• - The plate-like closure element being shaped in such a way that when the aqua stop is triggered it comes into sealing contact with the closure means and closes the at least one opening.

The sensory sprinkler can be the above-mentioned sprinkler with the glass bulb as the sensory element. In principle, the safety device is suitable for all sensory sprinklers, in particular all standard sprinklers. For example, as standard sprinklers, horizontal and vertical; standing, hanging, sunk-hanging; Concealed and unconcealed sprinklers with all types of threads, especially standard threads available on the market, can be used. The sprinklers themselves are not part of the safety device. The same applies to the water pipe mentioned. In addition, the water pipe could also carry media other than water, so the term water pipe should be interpreted broadly.

In the context of this patent application, forms of possibility such as "screwable", "insertable" or similar are also considered to be fulfilled if the possibility is realized, i.e. something is "screwed in" or "introduced" or similar. This applies to all possibility terms and implementation terms that are used within this patent application.

The diameters of the components used in the safety device according to the invention and associated elements are preferably matched to one another in such a way that they can be brought into sealing contact—if necessary.

The plug-and-turn connection, by means of which the clamp connection area of the closure means can be connected to the socket of a pipe clamp, allows the two elements to be connected quickly and securely. The plug-turn connection can, for example, also be a plug-turn-click connection and in particular a bayonet lock. Snapping means are preferably provided for the plug-and-turn connection in order to make the connection even more secure. It is not firmly specified in which of the two elements recesses are formed and in which of the elements projections are formed.

According to the invention, the safety sleeve is designed essentially as a double cylinder with different cylinders. The double cylinder is therefore essentially a stepped cylinder, with the diameter of the cylinder on the water pipe side preferably being larger than the diameter of the cylinder facing away from the water pipe. The aforesaid contact area of the safety sleeve for a direct or indirect contact of the aqua-stop device when the aqua-stop has not been triggered is preferably located in the transition area between the two double cylinders.

The substantially hollow-cylindrical aqua-stop device according to the invention is essentially designed to be displaceable between two positions, with displacement between the two positions only being possible when the aqua-stop has been triggered. So there is a position when the aqua stop is not triggered and another position when the aqua stop is triggered. In the non-triggered position of the aqua stop, the at least one opening in the cylinder jacket of the aqua stop device is not closed.

Water can therefore flow from a water pipe into the aqua-stop device and on to a sprinkler. This ensures the full function of the sprinkler in the event of a fire. However, if the aqua-stop is triggered by mechanical damage, the aqua-stop device can be moved in the safety sleeve and the water pressure in a water pipe pushes the plate-like closing element of the aqua-stop device down or out of the pipe . As a result, the at least one opening in the cylinder jacket of the aqua-stop device closes, so that no large amount of water escapes. It is possible that the Aqua-Stop device completely seals the pipe system in the event of mechanical damage to the safety sleeve. However, it is preferred that the plate-like closing element has a micro-opening for a water supply from the water pipe into the aqua-stop device when the aqua-stop is triggered. In this way, it is possible to quickly identify a defective sprinkler or a mechanically damaged, worn sprinkler and initiate its replacement by the slight dripping in the safety device. According to a preferred embodiment of the invention, the micro-opening is realized by a hollow rivet or hollow screw. But it can also be a bore.

According to the invention, the safety sleeve has a safety element for triggering the aqua stop device. The security element can be configured differently. In a particularly simple and efficient embodiment of the invention, the safety sleeve has a predetermined breaking point, in particular a predetermined breaking point arranged circumferentially around the safety sleeve. It can be a circumferential notch, for example. Alternatively, it can be a groove or a fold.

According to a preferred embodiment of the invention, the aqua-stop device has a spring element on the outside of the cylinder jacket, which is supported against the closure means on the water pipe side when the aqua-stop is not triggered. The spring element can be one or more parts. It is preferably a spring element running around the cylinder jacket. The spring element makes it easier to move the Aqua-Stop device between the two positions when the Aqua-Stop is triggered. The spring force supports the weight or the pressure of the water. This embodiment variant is therefore particularly effective and safe.

The aqua stop device can be designed in one piece or in several pieces.

According to a preferred embodiment of the invention, the safety device also has a sleeve that can be inserted into the central opening of the closure means and that is arranged between the aqua stop device and the contact area of the safety sleeve when the aqua stop is not triggered. The sleeve can be supported directly or indirectly on the contact area of the safety sleeve. The sleeve can also be firmly connected to the safety sleeve, for example by being pressed in or glued in place. The sleeve and the safety sleeve can also be formed integrally. Due to its direct or indirect contact with the aqua-stop device, the aqua-stop device also indirectly contacts the contact area of the safety sleeve. Indirect means here that another component or a plurality of components can be provided in between. However, it is essential that if the aqua-stop is not triggered, the position of the aqua-stop device is essentially fixed and the aqua-stop device in the safety sleeve cannot then be moved.

According to a preferred embodiment of the invention, the sleeve has a tapered outer shape and/or the sleeve has an annular seal on the outside for sealing the sleeve against the closure means. A tapered outer shape makes it easier to insert the sleeve into the central opening of the closure means during assembly and makes it easier for the sleeve to fall out of the closure means when the aqua stop is triggered. Canting can be avoided.

According to a preferred embodiment of the invention, the plate-like closing element is bevelled all the way round. The closure means then preferably also has a circumferential bevel around its central opening on the water pipe side for sealing contact with the plate-like closing element of the aqua stop device. This means that when the aqua stop is triggered, the two sloping surfaces can be brought into a particularly well-sealed system. This is especially true when at least one of the beveled surfaces includes a sealant. According to a preferred embodiment of the invention, the plate-like closing element has a metal plate and/or a sealant. The metal plate preferably forms the water pipe-soapy end of the plate-like end element and the sealant comes into sealing contact with the closure means when the aqua stop is triggered.

Instead of a circumferential bevel, a horizontally circumferential surface can also be provided.

According to a preferred embodiment of the invention, the hollow-cylindrical aqua-stop device has exactly four openings in its cylinder jacket, in particular spaced 90 degrees apart, for a sufficient supply of water from a water pipe into the hollow cylinder if the aqua-stop is not triggered. The symmetrical arrangement of four openings allows sufficient water supply and practically does not destabilize the Aqua-Stop device, despite the perforations in the cylinder jacket. However, the number of openings is not strictly limited to four. One, two, three, five or six or even more openings can be provided. The openings are preferably the same size and have the same geometric shape, but they can also be configured differently. It is also possible that openings for an adequate supply of water are formed by a lattice network, which is formed in particular in a region of the cylinder casing.

According to a preferred embodiment, the closure means has at least one ring seal, in particular two ring seals, for sealing the closure means against the socket of the pipe clamp. The ring seals can be inserted or inserted into ring-shaped peripheral notches.

According to a preferred embodiment of the invention, the safety sleeve has a predetermined breaking point, in particular a predetermined breaking point arranged circumferentially around the safety sleeve. According to a preferred embodiment of the invention, the safety sleeve is secured against falling if the predetermined breaking point is breached. This is particularly advantageous if, when the safety sleeve falls down, not only the safety sleeve itself but also other components of the safety device or other elements can fall down. This applies, for example, to the sprinkler head or an extinguishing bell, both of which are relatively heavy and can cause damage if they fall. A safety wire, for example, can be used to prevent it from falling. However, other forms of realization are also possible.

According to a preferred embodiment of the invention, the safety sleeve has a seal on the inside, in particular a flat seal, for sealing the safety sleeve against a sprinkler.

According to a preferred embodiment of the invention, the safety device also has a bell, the bell having an opening on the water pipe side, the diameter of which is dimensioned such that the bell can be screwed to the outside of the safety sleeve. This change in design compared to the prior art does not change the function of the bell, but facilitates its assembly. This means that the bell can be replaced at any time without depressurizing the sprinkler system, because the bell is designed in such a way that it can be screwed on and off the sprinkler on the safety sleeve using its own thread.

• - eine Sicherheitseinrichtung wie vorstehend in mehreren Ausführungsvarianten beschrieben; und
• - einen Sprinkler, der in die Sicherheitsmuffe einschraubbar ist.

According to a preferred embodiment of the invention, this relates to a kit comprising:

• - A safety device as described above in several variants; and
• - a sprinkler that can be screwed into the safety sleeve.

This can in particular be a standard sprinkler, which in particular can have a small glass bulb as the sensor element. For example, as standard sprinklers, horizontal and vertical; standing, hanging, sunk-hanging; Concealed and unconcealed sprinklers with all types of threads, especially standard threads available on the market, can be used. Otherwise, everything that has been said above about the safety device or the sprinkler also applies to this set.

• - Eine Sicherheitseinrichtung wie vorstehend in mehreren Ausführungsvarianten beschrieben, und
• - ein Montagewerkzeug zum Montieren der Sicherheitseinrichtung.

According to a further aspect of the invention, this relates to a kit comprising:

• - A safety device as described above in several variants, and
• - an assembly tool for assembling the safety device.

The assembly tool can be used to attach or screw the safety sleeve into the closure means. The assembly tool encloses the entire safety sleeve and a sprinkler, with the sprinkler being screwed together before the safety sleeve is attached to the safety device and the safety sleeve. In this way, a predetermined breaking point of the safety sleeve cannot be damaged when screwing in the components.

According to a preferred embodiment of the invention, the assembly tool is designed essentially as a hollow cylinder and is open on the side facing the safety device.
wherein the assembly tool has a receiving area for a sprinkler, and wherein the Assembly tool has a segmented inner cylinder adjacent to a peripheral outer cylinder, the segmented inner cylinder having recesses for receiving segmentations of the safety sleeve with a precise fit in such a way that the predetermined breaking point is protected from breaking during assembly, and
wherein the assembly tool has a tool attachment opening in the bottom area, in particular a square opening, on the side facing away from the safety device. There is also a tool attachment opening, preferably a hexagonal opening, on the side facing the safety device.

According to a further aspect of the invention, this relates to a sprinkler system with a safety device as described above and/or with a set as described above in several design variants. All explanations for the safety device and for the sets also apply to the sprinkler system according to the invention.

• - eine zentrale Öffnung, die sich durch das Befestigungselement hindurch erstreckt;
• - einen Schellenanschlussbereich mit einem umlaufenden ringförmigen Graben, in den ein Stutzen einer Rohrschelle, die einen Wasserrohr umschließen kann, aufnehmbar ist, wobei das Verschlussmittel mit dem Stutzen der Rohrschelle mittels einer Steck-Dreh-Verbindung, insbesondere mittels eines Bajonett-Verschlusses, verbindbar ist; und
• - einen im wesentlichen hohlzylindrischen Sprinkleranschlussbereich, in den ein Sprinkler einschraubbar ist.

According to a further aspect of the invention, this relates to a fastener for a sensory sprinkler, comprising:

• - a central opening extending through the fastener;
• - a clamp connection area with a circumferential annular trench, in which a socket of a pipe clamp, which can enclose a water pipe, can be received, the closure means being able to be connected to the socket of the pipe clamp by means of a push-pull connection, in particular by means of a bayonet lock ; and
• - An essentially hollow-cylindrical sprinkler connection area into which a sprinkler can be screwed.

Sprinklers can be connected to a water pipe or a pipe clamp in a simple and sealing manner by means of the fastening element. There is no need to wrap Teflon tape around the threads of a sprinkler and then thread it in tight. But of course it would still be possible. The fastening element is particularly suitable for the initial installation of stationary fire protection systems with sensory sprinkler extinguishing systems. In this embodiment variant, an aqua stop is also preferably dispensed with. This can be particularly useful when a sprinkler is installed in such a way that mechanical damage to the sprinkler is not to be expected.

The embodiments shown can be combined with one another in whole or in part, provided this does not result in any technical contradictions.

• 1: zeigt einen Sprinkler gemäß dem Stand der Technik;
• 2: zeigt eine Rohrschelle in schematischer Darstellung mit Bajonett-Verschluss;
• 3: zeigt in einer schematischen Darstellung die erfindungsgemäße Sicherheitseinrichtung und damit in Zusammenhang stehende Bestandteile einer stationären Brandschutzanlage mit sensorischen Sprinklerlöschanlagen;
• 4: zeigt das Verschlussmittel in einer schematischen Schnittdarstellung;
• 5: zeigt eine Sicherheitsmuffe in schematischen Schnittdarstellungen;
• 6: zeigt eine Aqua-Stopp-Vorrichtung in einer schematischen Schnittdarstellung;
• 7: zeigt eine Hülse in schematischer Schnittdarstellung;
• 8: zeigt eine Löschglocke in einer schematischen Schnittdarstellung;
• 9: zeigt ein Montagewerkzeug für die Sicherheitsmuffe in einer schematischen Draufsicht und in einer schematischen Seitenansicht;
• 10: zeigt eine schematische Darstellung von Elementen einer stationären Brandschutzanlage mit sensorischen Sprinklerlöschanlagen, die ein erfindungsgemäßes Befestigungselement aufweist; und
• 11: zeigt das Befestigungselement in einer schematischen Schnittdarstellung.

The invention will be better understood with reference to the figures attached below:

• 1 : shows a sprinkler according to the prior art;
• 2 : shows a schematic representation of a pipe clamp with a bayonet lock;
• 3 : shows a schematic representation of the safety device according to the invention and related components of a stationary fire protection system with sensory sprinkler extinguishing systems;
• 4 : shows the closure means in a schematic sectional view;
• 5 : shows a safety sleeve in schematic sectional representations;
• 6 : shows an aqua-stop device in a schematic sectional view;
• 7 : shows a sleeve in a schematic sectional view;
• 8th : shows a quenching bell in a schematic sectional view;
• 9 Fig. 1: shows an assembly tool for the safety sleeve in a schematic plan view and in a schematic side view;
• 10 1: shows a schematic representation of elements of a stationary fire protection system with sensory sprinkler extinguishing systems, which has a fastening element according to the invention; and
• 11 : shows the fastening element in a schematic sectional view.

In the following, the same reference numbers designate the same elements.

1 shows a prior art brass sprinkler. The sprinkler includes a thread 5, by means of which it can be screwed into a thread of a pipe clamp according to the prior art. After this screwing in, the cavity 7 is in fluid communication with the inside of a water pipe. The cavity 7 is closed watertight to the outside as long as the sensor element of the sprinkler 1 is not triggered. The example shown is a glass bulb 4 which is arranged between a frame 3 of the sprinkler 1 . If the glass keg 4 in case of fire or at detached or blown off due to mechanical damage, water exits through the water outlet opening 6 .

2 shows a pipe clamp 10 which can be used in combination with the safety device according to the invention for a sensory sprinkler 1. Other specific configurations for a pipe clamp 10 are also possible. The pipe clamp can be made, for example, from galvanized cast iron, from hot-dip galvanized or galvanized steel or from stainless steel, or can include these materials. In the example shown, the pipe clamp 10 comprises two halves that can be screwed together. are shown in 2 Screw holes 12 in the two halves. A water pipe can be arranged in the cavity 11 (not shown). The pipe clamp 10 also has a cylindrical connection piece 13. The pipe clamp 10 and the cylindrical connection piece 13, 16 can also be preformed in one piece. In the transition area between the essentially spherical, cylindrical cavity 11 and the socket 13 , the pipe clamp 10 has a peripheral fold 17 and a flat seal 15 . An adaptation to the safety device according to the invention is the provision of two or three or more projections or connecting lugs 14, which can in particular be distributed uniformly, ie at regular angular intervals, around the circumference. These connecting lugs 14 can be part of the push-pull connection, by means of which the pipe clamp 10 can be connected to the locking means of the safety device.

If the clamp 10 were a clamp intended for ordinary use with a standard sprinkler 1 , the inside 18 of the neck 13 would be threaded, for example, and the threads 5 of the sprinkler 1 would be screwed into the neck 13 of the clamp 10 . According to the invention, however, this is no longer the case and, in particular, a Teflon wrapping of the thread 5 of the sprinkler 1 can be dispensed with.

3 shows a schematic representation of the safety device according to the invention and associated components of a stationary fire protection system with sensory sprinkler extinguishing systems. In the overall view, the pipe clamp 10 encloses a water pipe 20. As already mentioned above, this can also be a pipe that can be filled or is filled with another medium. The connecting piece 13 of a pipe clamp 10 is screwed into the surrounding ring-shaped trench of a clamp connection area 29 of a closure means 30 by means of a bayonet lock. The aqua stop device 50 is arranged inside the closure means 30 or in its central opening. The aqua-stop device 50 is essentially designed as a hollow cylinder and comprises a plate-like closing element 51 on its side facing the water pipe 20. There are 4 circular openings 53 in its cylinder jacket, which in the illustrated position of the aqua-stop 50 (non-triggered Position) are in fluid communication with the medium located in the water pipe 20. Furthermore, the aqua-stop device 50 includes a spring element 52, which is tense or compressed in the position shown: The cylindrical surface of the aqua-stop device 50 is supported against a sleeve 65 or rests against it, which in turn a stop 77 of the safety sleeve 70 rests. The sleeve 65 and the safety sleeve 70 can also be firmly connected to one another, for example glued or pressed in. The safety sleeve 70 is essentially in the form of a double cylinder and is screwed to the closure means 30 on the one hand and to the sprinkler 1 on the other. The upper part of the safety sleeve 70 is, as in 5 and 7 shown, interrupted and consists of three segments 71, which are each divided evenly over the circumference. Predetermined breaking points 80 are incorporated into the segments of the safety sleeve 70 . Furthermore, the extinguishing bell 90 is screwed on the outside to the cylinder of the safety sleeve 70 facing away from the water pipe 20 . The following is a description of the characteristics of each component included in 3 are shown in more detail and their function is explained in each case.

4 shows the closure means 30 in a schematic sectional view. The closure means 30 has a central opening 37 into which the aqua stop device 50 can be introduced at least partially. Furthermore, the closure means 30 has a clamp connection area 29, which has a circumferential annular trench 31, in which a socket 13 of a pipe clamp 10, which can enclose a water pipe 20, can be accommodated, the clamp connection region 29 being connected to the socket 13 of the pipe clamp 10 by means of a plug-and-turn connection, here by means of a bayonet lock, can be connected. For this purpose, the closure means 30 has bulges 32 for connection lugs 14 of the pipe clamp 10 . In 4 Not shown are channels extending parallel to the axis for the insertion process of the socket 13 with its connecting lugs 14. The exact configuration of these features is familiar to the person skilled in the art.

In the example shown, the closure means 30 comprises two ring seals 33 and 34, which seal against the connecting piece 13 of the pipe clamp 10 in the smooth-walled, polished inner area A thread 35 for the safety sleeve 70 is provided on the outside and in the lower area of the clamp connection area 29 . The diameter of the opening 40 is matched to the outer diameter of the aqua-stop device 50 and to the outer (maximum) diameter of the sleeve 65 . When installed, the spring element 52 of the aqua stop device 50 comes with the projections 38 of the closure means 30, so that the spring element 52 can be tensioned. The central opening 37 of the closure means 30 includes a circumferential bevel 36, which could alternatively also be horizontal or flat, which is designed for sealing contact with the plate-like closing element 51 or its seal 58 of the aqua stop device 50.

The closure means 30 can be made, for example, from galvanized steel, brass, aluminum or, in particular, corrosion-resistant metal alloys and/or can have at least one of these materials.

5a shows a safety sleeve 70 in a schematic sectional view. The safety sleeve 70 is essentially designed as a double cylinder with different cylinder diameters. It comprises an upper hollow cylinder 73, which faces the water pipe, and a lower hollow cylinder 74, which faces away from the water pipe when installed. The upper hollow cylinder 74, as in 5 and 7 shown and in 3 already described, is interrupted and consists here of three segments 71, each of which is divided evenly over the circumference. However, more than three segments 71, for example four or five segments 71, could also be provided and/or the segments can also be unevenly distributed and/or have different dimensions. However, the symmetrical implementation is preferred because it is easier to use and easier to manufacture. Predetermined breaking points 80 are incorporated into the segments 71 of the safety sleeve 70 . The closure means 30 can be screwed to the safety sleeve 70 inside the cylinder 73 on the water pipe side. A sprinkler 1 can be screwed to the safety sleeve 1 inside the hollow cylinder 74 . In the exemplary embodiment shown, threads 71 and 75 are provided within the two hollow cylinders 73 and 74 . Furthermore, the safety sleeve 70 has a stop for the sleeve 65 or, indirectly, for the aqua stop device 50 . Flat gaskets 79 and 78 are provided for sealing purposes. The flat seal 79 seals against the closure means 30 and the flat seal 78 seals against the sprinkler 1.

Furthermore, the safety sleeve 70 includes a safety element, which is designed here in the form of a circumferential predetermined breaking point 80 on all three segments 71 . In the example shown, this is located approximately in the transition area between the hollow cylinder 73 and the hollow cylinder 74. If a sprinkler 1 screwed into the safety sleeve is damaged, e.g. hit by a forklift, the predetermined breaking point 80 will break and the aqua stop will be triggered . The safety sleeve 70 including the sleeve 65 thus falls out of the closure means 30 and the aqua stop device 50 seals against the surface 36 of the closure means by means of the seal 58 .

5b shows a plan view of the safety sleeve 70 in a schematic representation. The uniform arrangement of the segments 71 is clearly visible.

The safety sleeve 70 can be made, for example, from galvanized steel, brass, aluminum or, in particular, corrosion-resistant metal alloys and/or can have at least one of these materials.

6 shows an aqua stop device 50 in a schematic sectional view. The aqua stop device 50 is designed essentially as a hollow cylinder. The end of the aqua stop device 50 on the water pipe side is designed with a plate-like closing element 51 which can protrude into a water pipe 20 . The end of the aqua-stop device 50 facing away from the water pipe 20 is essentially open and has an opening 54, so that in the event of a fire a substantially unhindered flow of water from the aqua-stop device to a sprinkler 1 is made possible. The wall thickness of the cylinder jacket 55 differs here: in an area facing away from the water pipe (bottom) it is thicker than in an area in which a spring element 52 is additionally provided around the outside of the cylinder jacket 55 . The outside 56 of the cylinder jacket 55 is aligned with the outside of the spring element 52. In the exemplary embodiment shown, the aqua stop device 50 has exactly four openings 53 with a circular diameter. This can involve opening bores. However, other configurations for openings with sufficient water flow are also possible. In the exemplary embodiment shown, the plate-like closing element 51 has a metal plate 57 and a seal 58 . This seal 58 is bevelled on the side facing away from the water pipe and can be brought into sealing contact with the Ver closing means 30 or its sealing surface 36 are brought.

In the example shown, the plate-like closing element 51 also has a hollow screw 59 with a micro-opening 60 . When the aqua stop is triggered, for example due to mechanical damage to the sprinkler 1 (not in the event of a fire), a defined quantity of water penetrates through this micro-opening 60, which makes it possible to identify which sprinkler 1 is damaged and needs to be replaced.

The basic element of the aqua-stop device can be made, for example, from galvanized steel, brass, aluminum or, in particular, corrosion-resistant metal alloys and/or can have at least one of these materials. The spring 52 can be made of spring steel and the seal 58 can be made of common sealing material.

7 shows a sleeve 65 in a schematic sectional view. In this case, the sleeve 65 has a waist 66 . Their maximum outer diameter is adapted to the diameter of the closure means 30. In the example shown, the sleeve 65 seals against the closure means 30 by means of an annular seal 64 . In the example shown, the top 68 of the sleeve 65 is in direct contact with the aqua stop device 50. On its underside 69, the sleeve 65 has a circumferential projection 67 for contact with the safety sleeve 70; the projection 67 can also fit pressed into the fold 77, glued or processed in some other way to form a seal. Thus, as long as the safety sleeve 70 is in position, the sleeve 65 and aqua-stop device 50 are also maintained in the aqua-stop device 50 non-deployed position. When the aqua stop is triggered, there is no contact with the projection 67 and the sleeve 65 can fall out of the closure means 30 and the aqua stop device 50 moves into the triggered position.

The sleeve 65 can be made of hard plastic or common metal alloys, for example.

8th shows a quenching bell 90 in a schematic sectional view. The bell 90 includes a lateral surface 94 as the actual protective element. On the side facing the water pipe, the bell 90 has an opening 92 with a relatively large diameter and a thread 91 is provided on the inside in this opening area. The bell 90 is screwed onto the safety sleeve 70 by means of this thread 91 . The bottom opening 93 is unchanged compared to prior art extinguishing bells. The extinguishing bell can be made, for example, from sheet metal, aluminum or other undemanding materials that are particularly corrosion-resistant.

9 shows an assembly tool 160 for the safety sleeve 70 in a schematic plan view and in a schematic side view. The installation tool 160 fits perfectly onto the safety sleeve 70 and is slid onto the safety sleeve 70 from below and engages with the safety sleeve 70 . To do this, the in 1 shown sprinklers already screwed into the safety sleeve 70. By turning the thread 71 of the safety sleeve 70 onto the thread 35 of the locking means (see 4 ) unscrewed and tightened.

During assembly, the sleeve 65 only pushes the aqua stop device 50 upwards when the seal 64 of the sleeve 65 has already been inserted into the closure means 30 and is sealing. Only then do the threads of the safety sleeve 70 and the closure means 30 engage. When screwed on further, the aqua-stop device 50 is pushed upwards and opens the openings 53 of the aqua-stop device 50 for the water flow.

The assembly tool 160 has an encircling ring 151 which, when slipped over the safety sleeve 70, supports the three segments 71 with its predetermined breaking point 80 against breaking. At the same time, the segments 152 serve as a drive for the segments 71 when pushed onto the safety sleeve 70.

The inner ring 153 serves as a depth stop. The height and shape of the three segments 152 are so pronounced that they can mesh perfectly in the interstices of the safety sleeve 70 in the segments 71 . The segments 71 are located in the gaps 157 during assembly. The opening 159 is selected to be large enough for the size of the safety sleeve 70 to fit in it.

The stop ring 153 has an opening 158 which continues to the bottom 150 of the tool 160 and which is selected to be large enough to accommodate the sprinkler 1 in its full size and shape. So when assembled, the sprinkler is in the hollow cylinder 156/cavity 158.

At the bottom center of the tool is a square hole 154 sized to accept a ratchet connector. This is optionally pronounced in ¼", 3/8", or ½". There is also an elevation on the outside of the base 150, this is a six edge 155 shaped. The outer circumference of the hexagon and its height are so pronounced that it is used to accommodate fork spanners, ring spanners and ratchet sockets.

The assembly tool can be made, for example, from galvanized steel, brass, aluminum or, in particular, corrosion-resistant metal alloys and/or can have at least one of these materials.

10 shows a schematic representation of elements of a stationary fire protection system with sensory sprinkler extinguishing systems, which has a fastening element 130 according to the invention. In this embodiment of the invention, no aqua-stop device 50 is provided. This embodiment variant is therefore suitable for locations where mechanical damage to a sprinkler 1 is not to be expected. The fastening element 130 is provided instead of the closure means 30 . The connecting piece 13 of a pipe clamp 10 can also be screwed into this by means of a rotary plug connection, in particular by means of a bayonet lock. As in the first embodiment of the invention, this attachment variant is very simple and reliable. In contrast to the closure means 30, however, the fastening element 130 now also includes a sprinkler connection area 143 in addition to the central opening 137 and the clamp connection area 142. The sprinkler 1 is screwed into this area. The extinguishing bell 90 can in turn be screwed onto the outside of the sprinkler connection area 143 .

11 shows the fastening element 130 again in a schematic sectional view. It includes a central opening 137 that extends through the fastener 130 substantially therethrough. Furthermore, it has a clamp connection area 142 with a circumferential annular trench 131, in which a socket 13 of a pipe clamp 10, which can enclose a water pipe 20, can be accommodated, the clamp connection region 142 being connected to the connection piece 13 of the pipe clamp 10 by means of a plug-in Rotary connection, in particular by means of a bayonet lock, can be connected. But it can also be a plug-turn-latch connection. For this purpose, a bulge 132 for a connecting lug 14 of the pipe clamp 10 is provided in the example shown. Seals 133 and 134 seal the fastening element 130 against the socket 13 of the pipe clamp 10 . Furthermore, the fastening element 130 comprises an essentially hollow-cylindrical sprinkler connection area 143 into which a sprinkler 1 can be screwed via a thread 135 . A projection or stop 138 is provided essentially in the transition area or the separation zone between the clamp connection area 142 and the sprinkler connection area 143, against which a thread of the sprinkler 1 can strike during a screwing-in process. It is possible to provide additional sealing means (not shown).

The fastening element 130 can be made, for example, from galvanized steel, brass, aluminum or, in particular, corrosion-resistant metal alloys and/or can have at least one of these materials.

Reference List

1

sprinkler

2

deflector

3

frame

4

glass keg

5

thread

6

Closing ball for the water outlet opening in case of fire

7

cavity

10

pipe clamp

11

Cavity for water pipe

12

screw hole

13

Support

14

protrusion, connecting nose

15

poetry

16

outside of the socket

17

fold

18

inside of the socket

19

screw with nut

20

water pipe

29

clamp connection area

30

means of closure

31

surrounding ring-shaped ditch

32

Bulge for connecting lug

33

ring seal

34

ring seal

35

Thread for safety sleeve

36

bevel

37

Opening for Aqua-Stop device

38

protrusion, stop

39

cavity

40

opening

41

inner wall

50

Aqua stop device

51

plate-like launching element

52

spring element

53

Opening for water inflow into the pipe

54

opening

55

cylinder jacket

56

outside

57

metal plate

58

poetry

59

screw

60

micro opening

64

ring seal

65

sleeve

66

sidecut

67

Projection for attachment to safety sleeve

68

top

69

bottom

70

safety sleeve

71

Thread for locking means

72

opening

73

upper hollow cylinder

74

lower hollow cylinder

75

Thread for sprinkler

76

opening

77

Stop for sleeve / aqua stop device

78

flat gasket

79

flat gasket

80

predetermined breaking point

90

Bell jar

91

thread

92

opening

93

opening

94

lateral surface

130

fastener

131

surrounding ring-shaped ditch

132

Bulge for connecting lug

133

ring seal

134

ring seal

135

Thread for sprinkler

136

Thread for bell

137

opening

138

protrusion, stop

139

cavity

140

opening

141

inner wall

142

clamp connection area

143

sprinkler connection area

Z

Shifting direction of the Aqua-Stop device

160

assembly tool

150

End plate / bottom of the tool

151

Circumferential ring for protection when screwing in the predetermined breaking point of 70

152

stop segments

153

Stop ring hollow on the inside so that the sprinkler fits through

154

Square hollow for ratchet ¼", 3/8", ½"

155

Hex for fork - box wrench or ratchet nut (10-19 mm)

156

wall of hollow cylinder ring

157

Space for 73

158

annular opening for sprinkler head

159

annular opening of the stop segments

Claims (23)

A safety device for a sensory sprinkler, comprising: - a pipe clamp for enclosing a water pipe; - a closure means with a central opening and with a clamp connection area, which has a circumferential annular trench in which a socket of the pipe clamp, which can enclose a water pipe, can be received, the clamp connection area being connected to the socket of the pipe clamp by means of a push-pull connection is connectable; - a safety sleeve, wherein the safety sleeve is essentially designed as a double cylinder with different cylinder diameters, wherein the locking means can be screwed to the safety sleeve inside the cylinder on the water pipe side, and wherein a sprinkler can be screwed to the safety sleeve inside the cylinder facing away from the water pipe; and - a substantially hollow-cylindrical aqua-stop device mountable in the central opening of the closure means; wherein the aqua-stop device has a plate-like closing element at its water pipe-side end, which can protrude into a water pipe, wherein the aqua-stop device is essentially open at its end facing away from the water pipe, so that an essentially unimpeded water flow is made possible by the aqua-stop device to a sprinkler, the safety sleeve having a safety element for triggering the aqua-stop device, the safety sleeve having a contact area for direct or indirect contact of the aqua-stop device when the aqua-stop is not triggered stop, the aqua-stop device being displaceable in the safety sleeve when the aqua-stop is triggered, the aqua-stop device in its cylinder jacket having at least one opening for a sufficient supply of water from a water pipe into the hollow cylinder when the aqua-stop is not triggered comprises, and wherein the plate-like closing element is shaped so that it b When the aqua stop is triggered, it comes into sealing contact with the closure means and closes at least one opening. Safety device according to claim 1 , The plate-like closing element having a micro-opening for a water supply from the water pipe into the aqua-stop device when the aqua-stop is triggered. Safety device according to the preceding claim, in which the micro-opening is made by a hollow rivet or hollow screw. Safety device according to one of the preceding claims, wherein the aqua-stop device has a spring element on the outside of the cylinder jacket, which is supported against the closure means on the water pipe side when the aqua-stop is not triggered. Safety device according to one of the preceding claims, wherein the safety device also has a sleeve which can be inserted into the central opening of the closure means and which is arranged between the aqua stop device and the contact area of the safety sleeve when the aqua stop is not triggered. Safety device according to the preceding claim, wherein the sleeve has a tapered outer shape and/or wherein the sleeve has an annular seal on the outside for sealing the sleeve against the closure means. Safety device according to one of the preceding claims, wherein the plate-like closing element is beveled all around. Safety device according to one of the preceding claims, wherein the plate-like closing element has a metal plate and/or a sealant. Safety device according to one of the preceding claims, wherein the hollow-cylindrical aqua-stop device has exactly four openings in its cylinder jacket, in particular arranged at 90° distances from one another, for a sufficient supply of water from a water pipe into the hollow cylinder if the aqua-stop is not triggered. Safety device according to one of the preceding claims, wherein the locking means can be connected to the socket of the pipe clamp by means of a bayonet lock and/or by means of a plug-turn-click connection. Safety device according to one of the preceding claims, wherein the closure means has at least one ring seal, in particular two ring seals, for sealing the closure means against the socket of the pipe clamp. Safety device according to one of the preceding claims, wherein the closing means has a circumferential bevel around its central opening on the water pipe side for sealing contact with the plate-like closing element of the aqua stop device. Safety device according to one of the preceding claims, wherein the safety sleeve has a predetermined breaking point, in particular a predetermined breaking point arranged circumferentially around the safety sleeve. Safety device according to the preceding claim, wherein the safety sleeve is segmented and in particular has three segments. Safety device according to one of the preceding claims, in which the safety sleeve is secured against falling if the predetermined breaking point is breached. Safety device according to one of the preceding claims, wherein the safety sleeve on the inside a seal, in particular a Flat seal for sealing the safety sleeve against a sprinkler. Safety device according to one of the preceding claims, which furthermore has a bell, the bell having an opening on the water pipe side, the diameter of which is dimensioned such that the bell can be screwed to the outside of the safety sleeve. A kit comprising: a safety device according to any one of Claims 1 until 17 ; and a sprinkler threadable into the safety sleeve. Set according to the preceding claim, wherein the sprinkler has a glass bulb as the sensor element. A kit comprising: a safety device according to any one of Claims 1 until 17 ; and an assembly tool for assembling the safety device. Set according to the preceding claim and according to Claim 14 , wherein the assembly tool is designed essentially as a hollow cylinder and is open on the side facing the safety device, wherein the assembly tool has a receiving area for a sprinkler, and wherein the assembly tool has a segmented inner cylinder adjacent to a peripheral outer cylinder, the segmented inner cylinder having recesses for precisely fitting receiving of segmentations of the safety sleeve in such a way that the predetermined breaking point is protected from breaking during assembly, and wherein the assembly tool has a tool attachment opening in the base area, in particular a square opening, on the side facing away from the safety device. Sprinkler system with a safety device according to one of Claims 1 until 17 and/or with a set according to one of the claims 18 until 21 . A sensory sprinkler fastener comprising: - a central opening extending through the fastener; - a clamp connection area with a circumferential annular trench, in which a socket of a pipe clamp, which can enclose a water pipe, can be received, the clamp exclusion area being able to be connected to the socket of the pipe clamp by means of a push-pull connection, in particular by means of a bayonet lock ; and - An essentially hollow-cylindrical sprinkler connection area into which a sprinkler can be screwed.

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