FIRE EXTINGUISHING SYSTEM VALVE, IN PARTICULAR WET ALARM VALVE, DRY ALARM VALVE OR SPRAY WATER VALVE, AND FIRE EXTINGUISHING SYSTEM COMPRISING SAME

Abstract

The invention relates to a fire extinguishing system valve (1), in particular a wet alarm valve, dry alarm valve or spray water valve, comprising a housing (2, 3) which has a fluid inlet chamber (8), a fluid outlet chamber (9) and a closing body (4a) which is movable to and fro between a blocking state and a release state, wherein, in the release state, the fluid inlet chamber (8) and the fluid outlet chamber (9) communicate with each other directly in a fluid-conducting manner, and, in the blocking state, the closing body (4a) prevents the direct communication between the fluid inlet chamber (8) and the fluid outlet chamber (9) characterized by a bypass line (10) which is integrated in the housing and is connected to the fluid inlet chamber (8) and the fluid outlet chamber (9) in a fluid-conducting manner.

Claims

1. A fire extinguishing system valve, comprising: a housing which has a fluid inlet chamber, a fluid outlet chamber and a closing body which is movable to and fro between a blocking state and a release state, wherein, in the release state, the fluid inlet chamber and the fluid outlet chamber communicate with each other directly in a fluid-conducting manner, and, in the blocking state, the closing body prevents the direct communication between the fluid inlet chamber and the fluid outlet chamber, at least one bypass line which is integrated in the housing, said bypass line being connected to the fluid inlet chamber in a fluid-conducting manner and extending away from there, an alarm channel which, at least in the release state of the closing body, is connected to the fluid inlet and/or fluid outlet chamber in a fluid-conducting manner, wherein the integrated bypass line is connected to the fluid inlet chamber and to the alarm channel, in a fluid conducting manner, by an alarm channel exit.

2. The fire extinguishing system valve as claimed in claim 1, wherein the bypass line is connected to the fluid inlet chamber and the fluid outlet chamber in a fluid-conducting manner.

3. The fire extinguishing system valve as claimed in claim 1, comprising a bypass shut-off member which is movable to and fro between a blocking state and a release state, in the release state, the fluid inlet chamber and the fluid outlet chamber are connected to each other in a fluid-conducting manner by the integrated bypass line, and in the blocking state, the fluid inlet chamber and the fluid outlet chamber are separated from each other.

4. The fire extinguishing system valve as claimed in claim 1, wherein the housing, the fluid inlet chamber, the fluid outlet chamber and the closing body or a valve seat cooperating with the closing body define a main volumetric flow between the fluid inlet chamber and the fluid outlet chamber depending on the extinguishing fluid pressure in the fluid inlet chamber, and wherein the integrated bypass line defines a bypass volumetric flow, which is reduced relative to the main volumetric flow, between the fluid inlet chamber and the fluid outlet chamber depending on the extinguishing fluid pressure in the fluid inlet chamber.

5. The fire extinguishing system valve as claimed in claim 1, wherein the integrated bypass line has at least one throttle element.

6. The fire extinguishing system valve as claimed in claim 1, wherein the integrated bypass line has at least one nonreturn element which is configured to release a fluid flow in the direction of the fluid outlet chamber and to prevent a fluid flow in the direction of the fluid inlet chamber.

7. The fire extinguishing system valve as claimed in claim 1, wherein the integrated bypass line has one or more exits for the connection of pressure sensors.

8. The fire extinguishing system valve as claimed in claim 1, wherein the integrated bypass line has one or more flushing connections for the connection of a pressurized flushing medium source and introduction of the flushing medium into the integrated bypass line.

9. The fire extinguishing system valve as claimed in claim 1, wherein the integrated bypass line has a pressure relief exit which preferably has a shut-off member, a safety valve or a bursting element, and is connected to the surroundings.

10. The fire extinguishing system valve as claimed in claim 1, wherein the at least one bypass line comprises two bypass lines, wherein a bypass line extending from the fluid inlet chamber to the fluid outlet chamber is a first bypass line, and a bypass line extending from the fluid inlet chamber as far as the alarm channel is a second bypass line.

11. The fire extinguishing system valve as claimed in claim 9, wherein the alarm channel exit is designed as part of the pressure relief exit.

12. The fire extinguishing system valve as claimed in one of claim 1, wherein the alarm channel is configured for connection to an alarm line, and wherein a nonreturn element is arranged in the alarm channel, said nonreturn element being configured to release a fluid flow in the direction of the alarm line and to prevent a fluid flow in the opposite direction.

13. The fire extinguishing system valve as claimed in claim 9, comprising a shut-off member for selectively releasing or blocking the pressure relief exit and/or the alarm channel exit.

14. The fire extinguishing system valve as claimed in claim 1, wherein the integrated bypass line has a particle filter.

15. The fire extinguishing system valve as claimed in claim 1, wherein the integrated bypass line is formed in a housing part fastened in a reversibly releasable manner to the housing as a housing cover of a hand hole.

16. A fire extinguishing system, comprising one or more fluid lines in which a fire extinguishing system valve for blocking and releasing the fluid lines is arranged, wherein the fire extinguishing system valve is designed as claimed in claim 1.

Description

[0027] The invention will be described in more detail below using preferred exemplary embodiments with reference to the attached figures, in which:

[0028] FIG. 1a shows a schematic illustration of a fire extinguishing system valve station of a fire extinguishing system according to the invention, with a fire extinguishing system valve according to a preferred exemplary embodiment,

[0029] FIG. 1b shows a schematic diagram of the connection of the fire extinguishing system valve according to FIG. 1a,

[0030] FIG. 2 shows a detailed illustration of part of the fire extinguishing system valve according to a first exemplary embodiment,

[0031] FIG. 3 shows a detailed illustration of the fire extinguishing system valve according

[0032] FIG. 4 shows a detailed illustration of the fire extinguishing system valve according to yet another exemplary embodiment, and

[0033] FIG. 5 shows a detailed illustration of the fire extinguishing system valve according to yet another exemplary embodiment.

[0034] A fire extinguishing system 100 is depicted systematically in FIGS. 1a, b. The fire extinguishing system 100 has one or more fluid lines 101 on which one or more sprinklers or nozzles 103 are provided. The fire extinguishing system 100 has a valve station with a fire extinguishing system valve 1. The fire extinguishing system valve 1 is preferably designed as a wet alarm valve and has a housing 2 to which a housing cover 3 is fastened in a reversibly releasable manner. The housing cover 3 is shown in various embodiments in FIGS. 2 to 5.

[0035] The fire extinguishing system valve 1 has a fluid inlet chamber 8 and a fluid outlet chamber 9 which, in a release state, communicate directly with each other and, in a blocking state, cannot communicate directly with each other. As emerges in particular from FIG. 1b, a closing body 4 which is movable to and fro between the blocking state and the release state is responsible for this function and, in the blocking state, rests in a fluidtight manner on a valve seat 4b. An alarm channel 5 is integrated in the housing 2 of the fire extinguishing system valve 1. When the closing body 4 is in the release position, it no longer rests on the valve seat 4b, no longer covers openings therein and therefore produces the fluidic connection between the fluid inlet chamber or fluid outlet chamber and the alarm channel 5. The alarm channel 5 extends as far as the outer side of the housing where an external alarm line can be connected.

[0036] Furthermore, the fire extinguishing system valve 1 has a bypass line 10 from the side of the fluid inlet chamber 8 as far as the side of the fluid outlet chamber 9. Bypass shut-off members 13 are provided in the bypass line 10, in each case on the inlet side and on the outlet side. Furthermore, one or more pressure sensors 6 are arranged in the bypass line 10.

[0037] The housing cover 3, shown in FIG. 2, of the fire extinguishing system valve 1 has a throttle element 14 in the bypass line 10. The throttle element 14 is preferably arranged at an exit 17 formed at the side of the fluid inlet chamber 8. Furthermore, the housing cover 3 has a nonreturn element 15 in the integrated bypass line 10, said nonreturn element having a ball 15a which is loaded by means of a spring 15b. The nonreturn element 15 is configured to release the fluid flow through the integrated bypass line 10 from the fluid inlet chamber 8 in the direction of the fluid outlet chamber 9 and to block same in the opposite direction. The fluid-conducting connection toward the fluid outlet chamber 9 is formed on the outlet side by a further exit 17. The integrated bypass line 10 and the exits 17 are preferably outwardly closed by means of closure elements 11a,b,c. The exits 17 and, with the latter, the throttle element 14 and the nonreturn element 15, are accessible from the outside via the closure elements 11a,b,c, which are connected in a reversibly releasable manner to the housing cover 3.

[0038] FIG. 3 shows a configuration of the fire extinguishing system valve 1 that slightly differs from the housing cover of FIG. 2. The fire extinguishing system valve 1 according to FIG. 3 additionally has a flushing connection 18 in the housing cover 3, which flushing connection can optionally be closed by a further closure element 11d. According to the exemplary embodiment from FIG. 3, respective pressure sensors 6 are connected at the exit 17.

[0039] Furthermore, a particle filter 24 is installed in the integrated bypass line 10 on the side of the fluid inlet chamber 8, said particle filter preferably being accessible from the outside through one of the exits 17 and being replaceable or cleanable. FIG. 4 in turn shows a slightly differing exemplary embodiment of the fire extinguishing system valve 1.

[0040] According to FIG. 4, the housing cover 3 has a bypass shut-off member 13 which is actuatable manually from the outside, preferably by means of a hand wheel 12. Additionally, a discharge exit 20 is provided on the housing cover 3, through which the integrated bypass line 10 can be relieved of pressure or emptied. In the operational orientation of the housing cover 3 on the fire extinguishing system valve 1, the discharge exit 20 is preferably oriented downward such that any fluid located in the integrated bypass line 10 can flow off download by means of gravity. The discharge exit 20 is closable by means of a closure element 11e.

[0041] FIG. 5 shows a detailed view of a further variant of the fire extinguishing system valve 1, which variant has an alarm channel bypass line 10a in which a shut-off member 23 is preferably arranged. The fire extinguishing system valve according to this variant can either have both the bypass line 10 (FIGS. 1 to 4) and the alarm bypass line 10a, or only the alarm channel bypass line 10a. A common feature of all of these variants is that a bypass line 10, 10a is integrated in the fire extinguishing system valve 1, either as a housing component let into a housing body or as an extension component connected directly to the housing, to some extent as a mounting block.

[0042] The alarm bypass line 10a is let into a mounting part 3a which can be the housing cover 3 according to FIGS. 1 to 4, a separate housing cover or a mounting block, but in each case is connected to the housing 2 of the fire extinguishing system valve 1 without pipework. The alarm channel 5 also extends through the mounting part 3a to an exit 25 to which an external alarm line can be connected.

[0043] The shut-off member 23 is controllable either manually or electrically and is configured to selectively release or to block the fluid-conducting connection between the integrated bypass line 10a and an alarm channel exit 21. The alarm channel exit 21 opens into the alarm channel 5 in which a further nonreturn element 22 is preferably provided. By means of actuation of the shut-off member 23, the alarm channel 5 can be flooded in a specific manner via the integrated bypass line 10a in order to be able to trigger a test alarm without having to open the closing body 4a between the fluid inlet chamber 8 and fluid outlet chamber 9 for this purpose. This is of advantage in particular in active alarm valves in which this would be associated with flooding of the pipe network downstream of the alarm valve.

[0044] The channel cross section of the integrated bypass line 10a is preferably selected in such a manner that an additional throttle for the throttle element 14 according to FIG. 2 is not absolutely necessary.

[0045] The exemplary embodiments of FIGS. 2 to 5 have each been explained separately above. However, the exemplary embodiments should not be understood as excluding one another. It is expressly within the context of the invention to combine the individual features of the respective FIGS. 2 to 5 with one another in order to obtain a multifunctional housing in which the invention is incorporated.

LIST OF REFERENCE SIGNS

[0046] 1 Fire extinguishing system valve

[0047] 2 Housing

[0048] 3 Housing cover

[0049] 3a Mounting part

[0050] 4a Closing body

[0051] 4b Valve seat

[0052] 5 Alarm channel

[0053] 6 Pressure sensor

[0054] 8 Fluid inlet chamber

[0055] 9 Fluid outlet chamber

[0056] 10 (First) bypass line

[0057] 10a (Second) bypass line, alarm bypass line

[0058] 11a, b, c, d, e Closure element

[0059] 12 Hand wheel

[0060] 13 Bypass shut-off member

[0061] 14 Throttle element

[0062] 15 Nonreturn element

[0063] 17 Exit

[0064] 18 Flushing connection

[0065] 19 Pressure relief exit

[0066] 20 Discharge exit

[0067] 21 Alarm channel exit

[0068] 22 Nonreturn element

[0069] 23 Shut-off member

[0070] 24 Particle filter

[0071] 25 Alarm channel exit

[0072] 100 Fire extinguishing system

[0073] 101 Fluid line

[0074] 103 Sprinkler or nozzle