DE102019101285A1 - Test system for carrying out a fire exposure test on a water flow valve - Google Patents

Abstract

The invention relates to a test method for carrying out a fire stress test on a water flow valve and / or on a water flow valve system, in particular on a wet alarm valve and / or on a wet alarm valve station, as well as technical components to be used in this connection and their use.

Description

The present invention relates to the technical field of test methods for carrying out fire stress tests on water-bearing systems and corresponding components and systems for carrying out such test methods.

In particular, the present invention relates to a test system for carrying out a fire exposure test on a water flow valve and / or on a water flow valve system, in particular on a wet alarm valve and / or on a wet alarm valve station.

In addition, the present invention relates to a water flow valve, in particular a wet alarm valve for a wet alarm valve station.

Furthermore, the present invention relates to a test system for carrying out a fire exposure test with a test system and at least one water flow valve and / or at least one water flow valve system, in particular a wet alarm valve and / or a wet alarm valve station.

The present invention also relates to a test method for carrying out a fire exposure test on a water flow valve and / or on a water flow valve system, preferably on a wet alarm valve and / or on a wet alarm valve station.

In addition, the present invention also relates to the use of a test system for carrying out a fire stress test on a water flow valve and / or on a water flow valve system, preferably on a wet alarm valve and / or on a wet alarm valve station.

Furthermore, the present invention relates to the use of a test system for carrying out a fire exposure test on a water flow valve and / or on a water flow valve system, in particular on a wet alarm valve and / or on a wet alarm valve station.

Finally, the present invention also relates to the use of a water flow valve as a test object in a test system for carrying out a fire exposure test.

Stationary or stationary fire extinguishing systems, such as sprinkler systems, are always operational technical systems that extinguish a fire with an extinguishing agent, such as water. They consist of a complex combination of piping systems and water discharge devices. Such systems should automatically extinguish a fire or at least contain it.

In the context of the present invention, the term “water flow valve” is preferably to be understood to mean a valve assembly which can be connected in a fluid-conducting manner between an inlet line on the one hand and an outlet line on the other. For this purpose, the water flow valve is connected, in particular directly, to the drain line on the one hand and the feed line on the other hand with assigned line ends. In particular, the water flow valve serves to shut off or control the flow of a water flow which is passed through the pipe network connected to the water flow valve. The water flow valve is particularly preferably a wet alarm valve which is used as a subassembly in a wet alarm valve station. In this context, the water flow valve or the wet alarm valve is designed to feed further water into the pipe network of the fire extinguishing system when a sprinkler or other automatic water discharge device is triggered. In contrast, however, it prevents water backflow. The water flow valve or wet alarm valve is usually installed vertically in the pipe network of the stationary fire extinguishing system.

In the context of the present invention, the term “water flow valve system” is to be understood in particular as a superordinate functional unit which comprises at least one water flow valve according to the previous definition. In addition, the water flow valve system includes other components, for example drainage valves, pressure measuring devices and other devices for detecting the water flow flowing through the water flow valve. In particular, the water flow valve system is designed as a wet alarm valve station, which is used as a central structural unit or functional unit in an automatic fire extinguishing system. In addition to the previously discussed wet alarm valve, such a wet alarm valve station also includes alarm devices in order to emit an acoustic and / or visual warning signal in the event of a fire. In this respect, the wet alarm valve station forms a complete or independent functional unit that not only controls the water flow in the pipe network, but also emits alarm signals in the event of a fire.

In order to ensure the reliable functioning of automatic fire extinguishing systems in the event of a fire, particularly high demands are placed on wet alarm valves or wet alarm valve stations. Against this background, there is a high demand for efficient test methods and corresponding test systems in order to meet To reliably check fire extinguishing systems requirements. In particular, there is a high need for uniform certifications and test procedures, with the help of which compliance with certain requirements can be reliably demonstrated.

In the Standard DIN EN 12259-2 requirements for the design and performance of wet alarm valves are specified. Here, a test setup is proposed in which the wet alarm valve to be tested is installed horizontally between two pipe sockets. A fuel pan for receiving a fuel is arranged under the wet alarm valve. To perform the fire stress test, the fuel is ignited to cause heat to the wet alarm valve. After the test period has ended, the trough is removed or the fire is extinguished. Subsequently, the wet alarm valve previously exposed to fire is removed from the test system and examined for damage, for example cracks, deformations or the like.

The aforementioned test method is disadvantageous in that the conditions prevailing in the real fire in a fire extinguishing system are only insufficiently represented. The standard in question provides for a horizontal alignment of the water flow valve, whereas in real operation a vertical installation of the water flow valve is provided in the fire extinguishing system. It is important to note that the alignment of the water flow valve has a significant impact on the degree of heat stress. In this respect, a fire exposure situation that is different from the vertical orientation is present with a horizontal orientation.

Another, also significant difference that in the test method according to the one in question Standard DIN EN 12259-2 Disclosed arrangement compared to the real conditions prevailing in the event of a fire in a fire extinguishing system is that the water flow valve is flowed through by a water flow in the event of an actual fire. In contrast, the test arrangement in the standard in question only contains residual water in the water flow valve. This can lead to a not inconsiderable falsification of the test results, since the actual load situation is only insufficiently represented in the event of a fire occurring under real conditions.

It is also noteworthy that under real conditions with an automatic fire extinguishing system, water is discharged immediately after a fire source has been detected. The associated cooling effect or extinguishing effect also affects the load situation of the water flow valve or the water flow valve system, which is sometimes in the vicinity of the corresponding water discharge device. This fact is also not taken into account in the standard in question.

As a result, the test method outlined above is therefore inadequate or has disadvantages, since the conditions prevailing in the state of use or use of the wet alarm valve are only insufficiently represented in the event of a fire and are in particular not suitable for checking the structural requirements for non-metallic components.

In this context, it is also remarkable that the growing development of commercial space is associated with an increased demand for automatic fire extinguishing systems, along with a large number of wet alarm valves or wet alarm valve stations that are required for this purpose. In this context, the use of non-metallic components, in particular plastic parts, is sought which, because of their inexpensive and simple design, enable the economical production of water flow valves even in large numbers.

In this regard, the above-mentioned shortcomings are particularly significant due to the previously described standard. Finally, non-metallic components or components with a low melting point of less than 800 ° C are comparatively sensitive to metallic components, so that the deviations from the real conditions are particularly noticeable.

Against this technical background, the present invention is based on the object of providing systems and methods for carrying out fire stress tests on water flow valves and / or water flow valve systems, the disadvantages of the prior art described above being at least largely avoided or at least alleviated.

In particular, it is an object of the present invention to provide systems and methods for carrying out fire stress tests on water flow valves and / or water flow valve systems, with which the real conditions prevailing in an actual fire are mapped as congruently as possible.

In particular, the present invention aims to provide a test concept that is a reliable fire test of non-metallic, in particular plastic-based, components of a water flow valve and / or a water flow valve station.

The task described above is achieved according to the invention by a test system according to patent claim 1, a water flow valve according to patent claim 12, a test system according to patent claim 15, a test method according to patent claim 17 and related uses according to patent claims 21, 22 and 23. Advantageous further developments and refinements of the respective aspects of the invention are the subject of the relevant subclaims.

The subject of the present invention is therefore - according to a first aspect of the present invention - a test system for carrying out a fire exposure test on a water flow valve and / or on a water flow valve system, in particular on a wet alarm valve and / or on a wet alarm valve station.

Furthermore, the present invention relates to - according to a zwe i th aspect of the present invention - a water flow valve, in particular a wet alarm valve.

Furthermore, according to a third aspect of the present invention, the present invention relates to a test system for carrying out a fire exposure test, the test system having a test system and at least one water flow valve and / or at least one water flow valve system, in particular a wet alarm valve and / or a wet alarm valve station,
Similarly, the present invention relates to - according to a fourth en aspect of the present invention - a test method for performing a fire exposure test at a water flow control valve and / or at a water flow control valve system, preferably to an alarm check valve and / or an alarm check valve.

Furthermore, the present invention relates - according to a fifth aspect of the present invention - to the use of a test system for carrying out a fire exposure test on a water flow valve and / or on a water flow valve system, preferably on a wet alarm valve and / or on a wet alarm valve station.

According to a sixth aspect of the present invention, the present invention also relates to the use of a test system for carrying out a fire exposure test on a water flow valve and / or on a water flow valve system, preferably on a wet alarm valve and / or on a wet alarm valve station.

Finally, the present invention relates - according to a seventh aspect of the present invention - to the use of a water flow valve as a test object in a test system for carrying out a fire stress test.

It goes without saying that refinements, embodiments, advantages and the like, which are listed below for the purpose of avoiding repetitions for only one aspect of the invention, of course also apply correspondingly to the other aspects of the invention.

Furthermore, it goes without saying that the following ranges are not to be understood as restrictive in the case of the following values, numbers and ranges; It is understood by the person skilled in the art that, depending on the individual case or application-related, it is possible to deviate from the specified ranges and details without departing from the scope of the present invention.

In addition, it is true that all of the values or parameters specified below or the like can in principle be determined or ascertained using standardized or explicitly specified determination methods or else using determination methods which are known per se to the person skilled in the art.

That being said, the present invention is described in more detail below.

The present invention - in accordance with a ers th aspect of the present invention - is a test system for performing a fire exposure test at a water flow control valve and / or at a water flow control valve system, in particular to a wet alarm valve and / or an alarm check valve, wherein the test facility at least one inlet line and at least has a drain line, and wherein the test system has at least one receiving means for receiving a preferably liquid fuel, the water flow valve in a test state being fluidically connectable between a line end of the inlet line on the one hand and a line end of the drain line on the other hand, and the line ends being designed and / or aligned in this way are that the water flow valve can be connected in a vertical installation position between the pipe ends in the test state.

The term “vertical installation position” is to be understood in particular as an orientation of the water flow valve that is at least essentially vertical or perpendicular to a support surface or a floor, which is used in particular to support the test system. This vertical orientation can relate to the direction of flow at the entry into the water flow valve and / or at the exit from the water flow valve and / or within the water flow valve. Alternatively or additionally, the vertical installation position or orientation in question can also relate to the longitudinal extent of the water flow valve, in particular the housing of the water flow valve.

It goes without saying that the vertical alignment is to be understood as a practical value. In this respect, this value is subject to tolerance, and there may be deviations from the exact perpendicular direction of preferably at most 15 °, particularly preferably at most 10 °, in particular at most 5 °.

The basic idea of the present invention is thus to be seen in the vertical orientation of the water flow valve installed in the test system, as a result of which the actual orientation of the water flow valve in the operating state or in real operation is mapped accordingly, since a vertical installation position is also provided here.

In addition, the vertical alignment of the water flow valve is associated with the advantage that the water flow valve - in a closed state - is securely closed due to the weight of a valve element of the water flow valve and / or a water column acting on the valve element. As a result, a reliable fire stress test can be carried out with a closed water flow valve, the pipes in the area of the water flow valve being completely blocked with water, as is also the case in real operation.

According to another alternative embodiment of this aspect, which also has independent inventive significance, the test system according to the invention can be connected to a water supply device or has a water supply line, so that a water flow can flow through the water flow valve in the test state and, in particular, in an open state.

The phrase “flowable”, as used in the context of the present invention, denotes in particular an open state of the water flow valve, in which a fluid inlet of the wet alarm valve on the one hand and a fluid outlet of the wet alarm valve on the other hand communicate in a fluid-conducting manner, with a continuous or discontinuous water flow via the fluid inlet enters the wet alarm valve and exits the wet alarm valve via the fluid outlet. As a result, there is a flow through the water flow valve, in particular with the valve element in an open or raised position.

The basic idea of this aspect of the invention is thus to be seen in the fact that the cooling effect associated with the water flowing through the wet alarm valve in real operation is taken into account. This also simulates the real conditions that prevail in the event of a fire, which enables a practical fire stress test.

It should be noted that the teaching according to the invention is not only aimed at the fire stress test of the water flow valve itself, but also encompasses all components which form the water flow valve system. The water flow valve is in particular connected directly to the test system, the other components of the water flow valve station being arranged on the water flow valve and therefore also being connected to the test system, that is to say indirectly.

According to a preferred embodiment of the test system according to the invention, it is provided that the inlet line and / or the outlet line is or are at least substantially vertically aligned.

In this preferred embodiment, both the inlet line and the outlet line are particularly preferably aligned vertically. In this respect, according to this particularly preferred embodiment, the inlet line, the water flow valve or its housing and the outlet line form a line arrangement which extends essentially vertically or has a common longitudinal direction. This allows a compact structure and is based on the arrangement, which can also be found under real conditions of a water flow valve installed in a fire extinguishing system.

As far as the formation of the inlet line and / or the outlet line is concerned, they are in particular rigid or rigid and / or reinforced in the longitudinal direction. As a result, the water flow valve received between the line ends is held in a fixed position or secured between the line ends of the inlet line and the outlet line.

According to a preferred embodiment of the test system, it is provided that the inlet line and / or the outlet line is or are designed as a pipe or pipes. Since pipelines are also used to a large extent in conventional fire extinguishing systems, a Such training enables a further approximation to the real conditions prevailing in the fire extinguishing system.

The inlet line and / or the outlet line is / are preferably made of a heat and / or fire-resistant material, in particular a metal or plastic material. The fire-resistant or heat-resistant design is particularly advantageous in that a fuel is ignited as part of the fire exposure test, as a result of which the water flow valve and the lines connected to the water flow valve are also exposed to heat. At least the materials of the inlet line or the outlet line must be essentially heat-resistant over the period of the test period of preferably at least 10 minutes, in particular at least 15 minutes, in particular against a temperature of at least 800 ° C.

According to a further and preferred embodiment, at least one of the line ends is flange-shaped. This allows a secure, in particular sealing, connection of the water flow valve to the test system. In the test system, all connecting elements which are provided for connecting, in particular, water-carrying line ends are particularly preferably flange-shaped.

Particularly preferably, at least one of the line ends can be replaced and / or its size can be varied in order to connect water flow valves of different sizes, in particular with different nominal diameters.

As far as the design of the receiving means is concerned, it is designed in particular to receive a liquid fuel. For this purpose, the receiving means is preferably designed as a trough-shaped or box-shaped container. The receiving means has a volume of at least 50 liters, preferably at least 100 liters, particularly preferably at least 150 liters. With regard to further requirements for fuel trays, reference may be made to the US standard FM 5130. In particular, the receiving means is made from steel, particularly preferably from S235 JP.

In addition, the receiving means preferably has at least one, in particular nozzle-like, outlet for discharging a liquid, in particular extinguishing water, from the interior or the receiving volume of the receiving means. The drain is in particular designed like a nozzle. The use of the drain prevents flooding of the absorbent as a result of the extinguishing water dispensed onto the absorbent.

For this preferred embodiment, provision is made in particular for a drain pipe, preferably a pipe, in particular siphon, to be connected to the drain. This allows a defined discharge of the liquid from the receiving means and thus simplifies the test operation and prevents the liquid fuel from floating.

According to a particular embodiment of the present invention, the receiving means has at least one preferably tubular guide section, through which the feed line is passed through the receiving means separately from the fuel. The feed line is guided through the guide section, as a result of which the feed line can be conducted separately from the fuel present in the interior of the receiving means to the water flow valve. The guide section particularly preferably also functions as an insulation means, so that the heat of a fuel ignited in the receiving means is transferred, if at all possible, to the fluid flowing in the feed line in a weakened manner.

According to a further and particularly preferred embodiment, the receiving means preferably has support feet arranged at its corner regions, by means of which the receiving means is supported on the supporting surface or on the floor, preferably adjustable in height.

The present invention further provides - according to a z we i th aspect of the present invention - is a water flow control valve, in particular a wet alarm valve, with at least one inlet port for connection to a line end of a supply line and with at least one drain port for connection to a pipe end of a drain pipe, wherein the water flow valve has at least one automatic water discharge device.

In the context of the present invention, the term “automatic water discharge device” is to be understood in particular to mean a technical device which is designed to initiate the water discharge automatically or independently, in particular via a nozzle or a sprinkler, in the event of a fire after a certain triggering temperature has been exceeded.

The basic idea of this aspect of the invention is therefore to equip the water alarm valve as such with an automatic water discharge device. Because of this configuration, the water flow valve according to the invention is particularly suitable for use in a Test system for carrying out a fire exposure test, since a test can be carried out in a particularly simple or compact design taking into account the extinguishing effect by the water discharge device. In this regard, it is provided that the water discharge device is fluidly coupled to a valve housing of the water flow valve in order to ensure that water is fed to the water discharge device after activation of the water discharge device.

The water discharge device is particularly preferably designed as a sprinkler. Sprinklers are particularly often used in automatic fire extinguishing systems. Such sprinklers usually have sprinkler heads which are closed with glass ampoules which are filled with a colored special liquid which in turn contains an air bubble. Within the sprinkler system, which in this case forms the higher-level fire extinguishing system, there is a constant water pressure that can be checked in a sprinkler center.

In the event of a fire, the liquid in the glass ampoules heats up and expands. This causes the ampoules to burst so that the nozzles are opened and water emerges from the sprinkler pipe network. In the event of a fire, only the sprinklers whose ampoules have reached the triggering temperature open.

The trigger temperature depends on the size of the enclosed air bubble and is identified by the color of the ampoule liquid. On average, the trigger temperature is approx. 30 ° C above the expected room temperature.

Opening the sprinkler or the automatic water discharge device is accompanied by a drop in pressure. This pressure drop preferably initiates an at least substantially independent opening of the water flow valve or the wet alarm valve. In particular, the valve element lifts off from the valve seat due to the pressure drop, as a result of which the further water flow through the water flow valve is made possible. From this point in time, water is pumped from tanks provided for this purpose or via a water connection dimensioned for this purpose at high pressure into the sprinkler system or into the test system and thereby replenished to the water supply device. This escapes from all open water nozzles or water discharge devices and extinguishes or minimizes the fire.

According to a particularly preferred embodiment, the water flow valve according to the invention is designed to convert the water flow into an electrical signal and to transmit it to at least one alarm device in order to output a corresponding alarm signal. This also enables the alarm function to be checked in the event of a fire, the at least one alarm device also being able to be part of the water flow valve according to the invention or of the superordinate water flow valve system.

Furthermore, it is preferably possible to determine the trigger location of the sprinkler or the water discharge device on the basis of the conversion of the water flow into the electrical signal.

The water flow valve particularly preferably has at least one temperature sensor in order to determine the temperature development which occurs as part of the fire stress test. In principle, the temperature sensor can be arranged or attached anywhere on the water flow valve. In particular, parts of the housing are suitable for arranging the temperature sensor in order to detect the temperature prevailing on the outside of the water flow valve. As an alternative or in addition, however, an arrangement inside or in the housing of the water flow valve is also useful in order to determine the temperature to which the components arranged inside the water flow valve are exposed. Particularly preferably, at least one temperature sensor can be designed to detect the temperature of the water flow as part of the fire exposure test.

As a result, the water flow valve according to the invention is thus designed for targeted use in the context of a fire exposure test, an automatically initiated extinguishing effect being able to be simulated in a compact manner.

Another object of the present invention - according to a third aspect of the present invention - is a test system for carrying out a fire exposure test, the test system having a test system and at least one water flow valve and / or at least one water flow valve system, in particular a wet alarm valve and / or a wet alarm valve station, wherein the test system has at least one inlet line, at least one outlet line and at least one receiving means for receiving a preferably liquid fuel, the water flow valve being connected in a test state above the receiving means between a line end of the inlet line on the one hand and a line end of the outlet line on the other hand.

This test system according to the invention has at least one test system according to the invention and at least one water flow valve according to the invention. In this way, the advantages described above can be realized accordingly.

The test system according to the invention particularly preferably has both the test system equipped according to the invention and the water flow valve according to the invention. In this way, the advantages described with the components according to the invention can be realized at the same time. The test system according to the invention thus enables the real conditions of a water flow valve installed in a fire extinguishing system to be shown in the operating state, the water flow valve design according to the invention simulating the extinguishing effect of an automatic water dispensing device in a compact manner.

As far as the design of the water flow valve as a component of the test system according to the invention is concerned, it is particularly provided that the water discharge device described above is arranged and / or fastened to the water flow valve on a side facing the receiving means. This ensures that water acts on the receiving device for the fuel, which is arranged directly below the water flow valve, and a particularly effective extinguishing effect can be simulated. In this regard, it should be noted that even with this particularly preferred embodiment, it is still possible to check the alarm function, for example by also arranging the alarm device on the water flow valve. Then, when the water discharge device or the sprinkler is triggered, the water flow is converted into an electrical signal and the alarm device is activated accordingly by transmitting the electrical signal.

1. (a) Bereitstellen einer Prüfanlage, die mindestens eine Zulaufleitung und mindestens eine Ablaufleitung aufweist,
2. (b) Anschließen des Wasserstromventils an ein Leitungsende der Zulaufleitung einerseits und an ein Leitungsende der Ablaufleitung andererseits,
3. (c) Entzünden eines Brandmittels, um eine Hitzeeiwirkung auf das Wasserstromventil zu simulieren.

Yet another object of the present invention - in accordance with a four-th aspect of the present invention - is a test method for performing a fire exposure test at a water flow control valve and / or at a water flow control valve system, preferably to an alarm check valve and / or an alarm check valve, in particular using the inspection system according to the invention ,
the following process steps are carried out,

1. (a) providing a test system which has at least one inlet line and at least one outlet line,
2. (b) connecting the water flow valve to a line end of the inlet line on the one hand and to a line end of the outlet line on the other hand,
3. (c) Igniting a fire to simulate heat on the water flow valve.

It is provided according to the invention that the water flow valve in step (b) is connected in a vertical installation position between the line ends of the inlet line on the one hand and the outlet line on the other.

In this way, the advantages already described can be realized, which in particular lie in an improved illustration of the installation position of a water flow valve installed in the fire extinguishing system, along with a practical fire test.

According to an alternative or supplementary method, which is of particular importance in particular, it is provided that a water flow flows through the water flow valve through the supply line during the action of heat.

In other words, the procedure according to the invention is such that the flow of water through the water flow on the one hand and the action of heat due to the burning fuel on the other overlap over a certain period of time.

Because of the vertical orientation of the water flow valve and the cooling associated with the water flow, the test method according to the invention is particularly suitable for the real-life examination of materials which have a comparatively low melting point, for example below 800 ° C.

The water flow valve is particularly preferably continuously flowed through by the water flow during the action of heat. For this purpose, the test system is connected to a water supply device or another water reservoir, in particular before the fire is ignited, in order to realize the continuous supply of a water flow. With this measure, the real conditions actually prevailing in the event of a fire are imaged in a further improved manner, in particular wherein the cooling effect that occurs on the water flow valve through the water flow is realistically represented.

The check is particularly preferably carried out automatically, in that a water discharge device preferably arranged on a water flow valve is triggered automatically. This activates the water flow through the water flow valve.

In this regard, it can in particular be provided that the water flow is converted into an electrical signal. The electrical signal is in turn used to activate an alarm device or to output an alarm signal. In this respect, the invention is suitable A method particularly preferably also for checking the alarm function of an alarm device connected or connectable to the water flow valve.

According to a particularly preferred method, in particular continuous temperature monitoring takes place in and / or on the water flow valve. For this purpose, the temperature profile on and / or in the water flow valve is recorded via temperature sensors, preferably via thermocouples, during the action of heat.

Likewise, another object of the present invention - according to a fifth aspect of the present invention - is the use of the test system according to the invention for carrying out a fire exposure test on a water flow valve and / or on a water flow valve system, preferably on a wet alarm valve and / or on a wet alarm valve station.

Furthermore, according to a sixth aspect of the present invention, the present invention relates to the use of the test system according to the invention for carrying out a fire resistance test on a water flow valve and / or on a water flow valve system, preferably on a wet alarm valve and / or on a wet alarm valve station.

Finally, the present invention relates - according to a seventh aspect of the present invention - to the use of the water flow valve according to the invention in a test system as a test object for carrying out a fire stress test.

With the uses according to the invention, the aforementioned advantages, as have already been mentioned with regard to the individual components or systems according to the invention, can be realized in a corresponding manner.

Preferred embodiments of the invention are explained in more detail below with reference to the drawing or figure representations. In connection with the invention of these preferred exemplary embodiments of the present invention, which, however, are in no way restrictive with respect to the present invention, further advantages, properties, aspects and features of the present invention are also shown.

• 1 eine perspektivische Darstellung eines erfindungsgemäßen Prüfsystems, bestehend aus einer erfindungsgemäßen Prüfanlage und einem erfindungsgemäßen Wasserstromventil, zur Durchführung einer Brandbeanspruchungsprüfung an einem Wasserstromventil und/oder an einem Wasserstromventilsystem, insbesondere an einem Nassalarmventil und/oder an einer Nassalarmventilstation;
• 2 eine Draufsicht eines Aufnahmemittels der erfindungsgemäßen Prüfanlage zur Aufnahme eines vorzugsweise flüssigen Brennstoffs;
• 3 einen schematischen Schnitt des in 2 dargestellten Aufnahmemittels;
• 4 eine schematische Seitenansicht der erfindungsgemäßen Prüfanlage im Anschlussbereich einer Wasserversorgungsleitung zu einer Zulaufleitung;
• 5 eine Seitenansicht des erfindungsgemäßen Wasserstromventils; und
• 6 eine weitere Seitenansicht des erfindungsgemäßen Wasserstromventils.

In the figure representations:

• 1 a perspective view of a test system according to the invention, consisting of a test system according to the invention and a water flow valve according to the invention, for carrying out a fire exposure test on a water flow valve and / or on a water flow valve system, in particular on a wet alarm valve and / or on a wet alarm valve station;
• 2nd a plan view of a receiving means of the test system according to the invention for receiving a preferably liquid fuel;
• 3rd a schematic section of the in 2nd illustrated receiving means;
• 4th a schematic side view of the test system according to the invention in the connection area of a water supply line to an inlet line;
• 5 a side view of the water flow valve according to the invention; and
• 6 another side view of the water flow valve according to the invention.

1 schematized a perspective view of a test system according to the invention 1 . The test system 1 comprises as the core a test system according to the invention 2nd and as a test piece, a water flow valve according to the invention 3rd .

With the water flow valve 3rd it is in particular a wet alarm valve that forms part of a higher-level (not shown) wet alarm valve station.

The test system 1 is therefore to be understood as an overall system or superordinate arrangement, in addition to the test system 2nd that too at the test facility 2nd connected water flow valve 3rd having.

In contrast, the test facility 2nd as the core of the test system 1 a unit to which the water flow valve to be tested is connected 3rd can be connected. On the connection of the water flow valve 3rd to the test facility 2nd will be discussed in more detail below.

It should be noted that the present invention addresses both the fire test of the water flow valve 3rd as well as the fire exposure test of a water flow valve system or a higher-level wet alarm valve station. In this respect, with the test system according to the invention 2nd or with the test system according to the invention 1 in addition to the water flow valve 3rd all other units or components forming the wet alarm station are also subjected to a fire exposure test.

The test system 1 and / or the test facility 2nd is or are to carry out a fire stress test on the water flow valve 3rd trained, with special attention to the fire exposure test on non- metallic and / or components with a low melting point and / or sections of the water flow valve 3rd and / or the water flow valve system. Components with a "low melting point" in particular have a melting point of less than 800 ° C, preferably less than 700 ° C, particularly preferably less than 600 ° C.

In principle, every component of the water flow valve 3rd not be metallic and / or have a low melting point. In particular, the non-metallic components and / or components having a low melting point are arranged such that a water flow flows through and / or flows around them in an operating or test state. This allows the fire exposure test to take into account a water flow acting on the components in question during the fire exposure and in particular the associated cooling effect.

As from the 1 the test system can be seen 1 or the test facility 2nd on a support surface A , in particular a floor, built up or supported.

For connecting the water flow valve 3rd instructs the testing facility 2nd at least one inlet pipe 4th and at least one drain pipe 5 on. Here is the water flow valve 3rd between one line end 6 the supply line 4th on the one hand and a line end 7 the drain pipe 5 on the other hand fluidly connected or connectable.

In the illustrated embodiment is at each end of the line 6 , 7 a connection element, in particular a flange, is provided, which has corresponding, preferably also flange-like, connection elements 8th , 9 of the water flow valve 3rd is connectable to form the fluidic connection.

It is essential to the invention that the line ends 6 , 7 are arranged and / or aligned such that the water flow valve 2nd in the in 1 shown test state is in a vertical installation position.

A schematically indicated straight line or vertical serves as a reference for the vertical installation position V , which are essentially perpendicular to the in particular flat support surface A on which the test facility 2nd or the test system 1 is supported, runs. At the support surface A it is in particular the floor of a test or laboratory room.

How especially out 5 visible, runs into the water flow valve in the test state 3rd incoming inflow 10th and / or one from the water flow valve 3rd escaping drain current 11 at least essentially also vertically or in the direction of the vertical V .

Unless the water flow valve 3rd has a certain longitudinal extent, that is to say a greater length than width, the relevant longitudinal direction or longitudinal axis likewise runs in the perpendicular direction or parallel to the vertical V, in order to implement the vertical installation position provided according to the invention.

In the illustration example, both the inlet line 4th as well as the drain pipe 5 vertically aligned. This results in an essentially vertical extension of the feed line 4th , the water flow valve 3rd and the drain pipe 5 along the vertical V , like especially from 1 can be seen.

Realization of water supply of the water flow valve 3rd takes place according to the invention via a (not shown) water supply device. This water supply device can be formed by a water tank, by means of which the test system 2nd is supplied with water. Alternatively or additionally, the test system 2nd can also be connected directly to a water supply network.

The inlet pipe 4th and / or the drain line 5 are preferably rigid or rigid and / or reinforced in the longitudinal direction in some other way. This allows a secure or fixed connection of the water flow valve 3rd to the test facility 2nd .

In the example shown are the inlet pipe 4th and the drain pipe 5 designed as pipelines. The pipelines can preferably consist of a metallic or other fire or heat resistant material. In particular, the material of the feed line 4th and / or the drain line 5 at least resistant to the temperatures occurring in the course of fire exposure, which are preferably in the range of 800 ° C.

The test facility 2nd also has at least one receiving means 12th to hold a (not shown) fuel. In the illustrated embodiment, the receiving means is preferably made of a metal material 12th trough-shaped or box-shaped.

The receiving medium 12th has support feet in the display example 13 on which the receiving means 12th on the support surface A is supported. In particular, the support feet 13 to the Corner areas of the receiving means 12th arranged and / or attached.

For connecting the support feet 13 to the receiving means 12th are preferably also receiving sleeves arranged at the corner areas 14 provided in which the support feet 13 can be introduced. This allows the support feet 13 optionally opposite the receiving sleeves 14 be adjusted to a height adjustment of the receiving means 12th relative to the support surface A to realize. The support feet are attached to the receiving sleeves via releasable fastening means, for example screws 14 attached.

The water flow valve is in the installed state or in the test state 3rd above the receiving means 12th . Here is the inlet pipe 4th , in particular in the middle, by the receiving means 12th passed through.

In addition, the receiving means 12th at least two opposite extension plates 15 on, starting from a bottom or a bottom of the receiving means 12th downwards or towards the support surface A extend there.

As from now 2nd shows the receiving means 12th a process 16 on. The sequence 16 is on the bottom or bottom of the receiving means 12th arranged.

Here is the process 16 in particular nozzle-like and / or in one piece with the receiving means 12th educated.

The sequence 16 especially allows the connection of a drain device 17th , in particular a siphon, to the defined drain of liquid from the drain 12th to enable. The drain facility 17th is in 1 shown accordingly.

In particular, is on the receiving means 12th a preferably tubular guide section 18th provided through which the inlet pipe 4th through the receiving means 12th is passed, as in particular in 4th evident. The leadership section 18th can be in one piece on the receiving means 12th be molded on or form a separate component.

To the inlet pipe 4th opposite the receiving space of the receiving means 12th Thermal insulation is the nominal diameter of the guide section 18th compared to the nominal diameter of the inlet pipe 4th enlarged accordingly. In particular, the nominal diameter of the guide section is 18th at least 120%, preferably at least 130%, particularly preferably at least 150%, of the nominal diameter of the feed line 4th .

For water supply to the test system 2nd As part of the fire exposure test, there is a water supply line 19th intended. The water supply line 19th is preferably designed as a pipeline and / or consists of a metallic or other heat or heat-resistant material.

The water supply performance 19th is fluid to the supply line 4th connected. The water supply line 19th runs essentially horizontally.

In particular, the water supply line runs 19th below the receiving means 12th and, preferably, between the extension plates 15 . For connecting the water supply line 19th to the inlet pipe 4th is a connector 20th , preferably in the form of a connecting piece, T-piece, coupling piece or the like.

In the illustrated and preferred embodiment, there is also a preferably annular support element 21st provided that on the guide section 18th is arranged. This will make the inlet pipe 4th opposite the guide section 18th secured or fixed.

As also from 4th visible, shows the test facility 2nd a preferably plate-shaped support means 22 on which the inlet pipe 4th on the support surface A is supported. In particular, the connector 20th on the support 22 arranged or supported.

How it turns out now 1 is the drain pipe 5 , especially at its axial end, with another line 23 fluidly connected. The further line 23 runs essentially horizontally and / or parallel to the water supply line 19th . In particular, the other line 23 formed as a pipeline and / or consists of a heat-resistant material, in particular of metal and / or a heat-resistant plastic.

In particular, the further line 23 one opposite the inlet pipe 4th and / or the drain line 5 and / or the water supply line 19th reduced diameter.

Furthermore is on the further line 23 at least one valve, for example a vent valve 24th and / or a safety valve 25th , intended. It can also have at least one ball valve 26 be provided to remove excess water from the test facility 2nd to derive accordingly.

The test system can be used to implement an extinguishing effect 2nd have at least one (not shown) water discharge device, for example in the form of a sprinkler and / or another nozzle. In principle, the water discharge device can be used at any point in the test system 2nd be arranged or provided. It is crucial, however, that the water emerging from the water discharge device has an extinguishing effect on that in the receiving means 12th fuel set on fire can develop. For example, the water discharge device on the inlet line 4th and / or on the drain line 5 and / or the further line 23 be arranged, especially above the receiving means 12th so that the escaping water directly onto the absorbent 12th can hit.

However, the water flow valve designed according to the invention is particularly preferred 3rd to be used, which is subsequently based on the 5 and 6 is discussed in detail.

The water flow valve according to the invention 3rd preferably has a valve housing 27th on that with the connection elements 8th , 9 is equipped. In particular, there is the valve housing 27th at least partially of a non-metallic material, preferably of plastic.

According to the representation 5 became part of the valve body 27th omitted for a view of the inside of the valve body 27th to enable.

It can be seen that the water flow valve 3rd a valve element 28 has, which is designed in the preferred embodiment flap-like. However, other technical solutions are also possible here. According to the illustration shown 5 is the valve element 28 in an open position, ie there is a flow of water through the water flow valve 3rd through instead. The valve element 28 is especially biased into a closed position, in particular by means of a spring. This takes the valve element 28 automatically return to the closed position as soon as the water flow through the water flow valve 3rd has been interrupted.

It is essential to the invention that the water flow valve 3rd even via an automatic water discharge device 29 disposes.

The water discharge device is particularly preferred 29 a sprinkler. This is characterized by the fact that the water discharge is triggered automatically after a certain temperature value or a certain heat effect is exceeded. This enables a fully automated fire stress test.

As in the illustrated embodiment according to 1 shown, the water discharge device is located 29 in the test state on one of the receiving means 12th facing side on the water flow valve 3rd .

It is understood that the water discharge device 21st however, also on the top or in another area on the water flow valve 3rd can be arranged.

For using the water discharge device 21st at the water flow valve 3rd is especially an adapter 30th provided for the fluid connection of the water discharge device 29 to the wet alarm valve 3rd is trained. This will simultaneously with the flow through the water flow valve 3rd the water discharge via the water discharge device 29 ensured.

It also includes the water flow valve 3rd at least one temperature sensor 31 . The temperature sensor 31 can optionally on the valve housing 27th , on the adapter 30th or another (housing) part of the water flow valve 3rd to be ordered. Alternatively or additionally, at least one temperature sensor can be used 31 inside the water flow valve 3rd be arranged in order to measure the temperature development in the test state on at least one component around which and / or through which a water stream flows.

In the 5 and 6 are possible arrangements of the temperature sensors by punctiform highlighting 31 on and / or in the water flow valve 3rd featured.

Further configurations, modifications, variations, modifications, special features and advantages of the present invention are readily recognizable and realizable for the person skilled in the art upon reading the description, without thereby leaving the scope of the present invention. The present invention is illustrated with the aid of the following exemplary embodiment, which, however, is in no way intended to limit the present invention.

Embodiment

Carrying out the test method according to the invention in accordance with a preferred embodiment of the present invention:

• Zur Durchführung einer Brandbeanspruchungsprüfung wird zunächst die zuvor erörterte erfindungsgemäße Prüfanlage 2 zur Verfügung gestellt.

According to a special embodiment of the test method according to the invention present invention can be carried out as described below:

• To carry out a fire exposure test, the test system according to the invention previously discussed is used first 2nd made available.

The water flow valve 3rd is sent to the test facility as a test object 2nd connected by the water flow valve 3rd to the line end 6 the supply line 4th on the one hand and the line end 7 the drain pipe 5 on the other hand is connected.

The ball valve 26 is closed and via the water supply line 19th a stream of water initiated. The water flows into the pipe network until the pressure of the water supply and the pressure in the pipe system are balanced. The water flow valve is in this state 3rd in a closed state, for example by the faulty valve element 28 , which sits sealingly on an associated valve. Consequently, when the water flow valve flows 3rd is operational, no water through the water flow valve 3rd .

The water flow valve 3rd is tested in the same way as it is installed in practice, in a vertical installation position.

As a means of reception 12th a fuel pan with a floor area of 1 m ^{2 is} used. 60 l of heptane are used as fuel in the absorption medium 12th filled. The amount and formation of the fuel is selected in such a way that a conflagration of at least 15 minutes is realized, in the area of the above the receiving means 12th arranged water flow valve 3rd In the event of fire, temperatures of at least 800 ° C are present.

After the conflagration has started, the automatic water discharge device in particular takes place 29 , which is in particular a sprinkler, a discharge of water onto the receiving means 12th or the fire started in it. Due to the activation of the water discharge device 29 and the water supply facility of the test facility 2nd there is now a constant water flow through the water flow valve 3rd before, since the previously closed valve element is now lifted off the valve seat in order to make it possible to replenish the water flow.

During the entire fire exposure test, various positions in and / or on the water flow valve 3rd examined the temperatures. In addition, pressure monitoring is at the end of the further line 23 intended. A corresponding pressure sensor is provided for this.

To avoid flooding or overflowing of liquid from the receiving means 12th the process becomes 16 with the drain device connected to it 17th opened in order to allow the liquid to flow out of the receiving means at the bottom 12th to ensure beyond.

As a result, the water flow valve to be tested 3rd exposed to a wildfire for at least 15 minutes as part of the fire exposure test, with temperatures of around 800 ° C occurring in the area of the water flow valve during the test.

After carrying out the fire stress test or extinguishing the conflagration, the water flow valve is used 3rd again from the test facility 2nd expanded. Subsequently, the water flow valve claimed 3rd checked for its basic functions. Particular attention was paid to the non-metallic and / or components with a low melting point.

As a result, the previously described test procedure on ten test objects or water flow valves 3rd and / or water flow valve stations performed. A high level of reproducibility could be determined, in that the same signs of stress could be found on the components to be examined, in particular non-metallic and / or components with a low melting point. This speaks for a high reproducibility of the test method according to the invention and the test systems proposed in this connection.

Reference symbol list

1

Test system

2nd

Test facility

3rd

Water flow valve

4th

Inlet pipe

5

Drain pipe

6

Line end

7

Line end

8th

Connecting element

9

Connecting element

10th

Inlet flow

11

Drain current

12

Receiving means

13

Support foot

14

Receptacle

15

Extension plate

16

procedure

17th

Drain facility

18th

Guide section

19th

Water supply line

20th

Connector

21

Support element

22

Support means

23

Further management

24th

Vent valve

25th

Safety valve

26

Ball valve

27th

Valve body

28

Valve element

29

Water discharge device

30th

adapter

31

Temperature sensor

A

Contact surface

V

vertical

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Non-patent literature cited

• Standard DIN EN 12259-2 [0013, 0015]

Claims (24)

Test system (2) for carrying out a fire exposure test on a water flow valve (3) and / or on a water flow valve system, in particular on a wet alarm valve and / or on a wet alarm valve station, the test system (2) having at least one inlet line (4) and at least one outlet line (5 ), and wherein the test system (2) has at least one receiving means (4) for receiving a preferably liquid fuel, the water flow valve (3) in a test state between a line end (6) of the inlet line (4) on the one hand and a line end (7 ) of the drain line (5), on the other hand, can be connected fluidically, characterized in that the line ends (6, 7) are designed and / or aligned such that the water flow valve (3) in the test state in a vertical installation position between the line ends (6, 7) can be connected and / or that the test system (2) can be connected to a water supply device or a Has water supply device so that a water flow can flow through the water flow valve (3) in the test state. Testing facility after Claim 1 , characterized in that the inlet line (4) and / or the outlet line (5) is or are at least substantially vertically aligned. Testing facility after Claim 1 or 2nd , characterized in that the inlet line (4) and / or the outlet line (5) is rigid or rigid and / or reinforced in the longitudinal direction. Test system according to one of the preceding claims, characterized in that the inlet line (4) and / or the outlet line (5) is or are designed as a pipeline or pipelines. Test system according to one of the preceding claims, characterized in that the inlet line (4) and / or the outlet line (5) is or are made of a heat and / or fire-resistant material, in particular a metal or plastic material. Test system according to one of the preceding claims, characterized in that at least one of the line ends (6, 7) is flange-shaped. Test system according to one of the preceding claims, characterized in that the receiving means (12) is designed in particular as a trough-shaped or box-shaped container. Test system according to one of the preceding claims, characterized in that at least one preferably nozzle-like outflow (16) is provided on the receiving means (12) for removing a liquid from the interior of the receiving means (12). Testing facility after Claim 8 , characterized in that a preferably pipe, in particular siphon-like, drain line can be connected to the drain (16). Test system according to one of the preceding claims, characterized in that the receiving means (12) has at least one preferably tubular guide section (18) via which the feed line (4) can be passed through the receiving means (12) separately from the fuel. Test system according to one of the preceding claims, characterized in that the receiving means (12) preferably has support feet (13) arranged at corner regions of the receiving means (12), by means of which the receiving means (12) is preferably supported in a height-adjustable manner. Water flow valve (3), in particular wet alarm valve, for connection to a line end (6) of an inlet line (4) on the one hand and to a line end (7) of an outlet line (5) on the other hand, characterized in that the water flow valve (3) has at least one automatic water discharge device ( 29). Water flow valve after Claim 12 , characterized in that the water discharge device (29) is designed as a sprinkler. Water flow valve after Claim 12 or 13 , characterized in that the water flow valve (3) has at least one temperature sensor (31), preferably a thermocouple. Test system (1) for carrying out a fire exposure test, the test system having a test system (2) and at least one water flow valve (3) and / or at least one water flow valve system, in particular a wet alarm valve and / or a wet alarm valve station, the test system (2) having at least one Inlet line (4), at least one outlet line (5) and at least one receiving means (12) for receiving a preferably liquid fuel, the water flow valve (3) in a test state between a line end (6) of the inlet line (4) on the one hand and a line end (7) the Drain line (5) on the other hand is fluidly connected, characterized in that the test system according to one of the Claims 1 to 11 is formed and / or that the water flow valve according to one of the Claims 12 to 14 is trained. Test system according to Claim 15 , characterized in that the water discharge device (29) is arranged and / or attached to the water flow valve (3) on a side facing the receiving means (12). Test method for carrying out a fire exposure test on a water flow valve (3) and / or on a water flow valve system, preferably on a wet alarm valve and / or on a wet alarm valve station, in particular using a test system (2) according to one of the preceding claims, the following method steps being carried out ( a) providing a test system (2) which has at least one inlet line (4) and at least one outlet line (5), (b) connecting the water flow valve (3) to a line end (6) of the inlet line (4) on the one hand and to a line end (7) the drain line (5) on the other hand, (c) igniting a fire to cause heat to the water flow valve (3), characterized in that the water flow valve (3) in step (b) in a vertical installation position between the line ends ( 6, 7) the inlet line (4) on the one hand and the outlet line (5) on the other hand is connected and / or d a flow of water flows through the water flow valve (3) during exposure to heat. Test method according to Claim 17 , characterized in that the water flow valve (3) is continuously flowed through by the water flow during the action of heat. Test method according to Claim 17 or 18th , characterized in that a preferably automatic water discharge device, in particular a sprinkler, is provided, which is triggered as a result of the action of heat after a certain triggering temperature has been exceeded, in order to bring about a water discharge onto the ignited fire-fighting medium. Test method according to Claim 19 , characterized in that the water flow through the water flow valve (3) is initiated or initiated by triggering the water discharge device. Test method according to one of the preceding claims, characterized in that the temperature profile at and / or in the water flow valve (3) is recorded via temperature sensors (31), preferably via thermocouples, during the action of heat. Use of a test system (2) according to one of the preceding claims for carrying out a fire exposure test on a water flow valve (3) and / or on a water flow valve system, preferably on a wet alarm valve and / or on a wet alarm valve station. Use of a test system (1) according to one of the preceding claims for carrying out a fire resistance test on a water flow valve (3) and / or on a water flow valve system, preferably on a wet alarm valve and / or on a wet alarm valve station. Use of a water flow valve (3) designed according to one of the preceding claims in a test system (2) as a test object for carrying out a fire exposure test.

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