JP4429009B2 - Fire extinguisher - Google Patents

Description

  The present invention relates to a fire extinguisher, and more particularly to a fire extinguisher capable of continuously supplying a liquefied fire extinguishing gas to a protective compartment where fire extinguishing activity is to be performed.

  The conventional fire extinguishing apparatus, for example, if each room in the building is a protection section, a nozzle that is disposed in each protection section, and that ejects liquefied fire extinguishing gas as a fire extinguishing gas, and a nozzle connected to the nozzle, A transport line for transporting liquefied fire extinguishing gas and a transport line extending from each protection section are combined and connected to a liquefied fire extinguishing gas storage tank for storing liquefied fire extinguishing gas, and disposed in each protection section. And an opening / closing valve that opens and closes the transfer line, and a drive device that opens the opening / closing valve.

In this fire extinguisher, by driving the drive device, the on-off valve coupled to the transfer line in the specific protection section is opened, so that the liquefied fire extinguishing gas in the liquefied fire extinguishing gas storage tank is passed through the transfer line. It is made to transfer to the nozzle of a protection zone, and the fire extinguishing gas is ejected from a nozzle, This can extinguish the fire in a protection zone (refer patent document 1 and patent document 2).
JP 2003-79758 A Utility Model Registration No. 3075641

  However, in such a fire extinguishing apparatus, when the liquefied fire extinguishing gas is sent from the liquefied fire extinguishing gas storage tank to the transfer line, the volume of the liquefied fire extinguishing gas in the liquefied fire extinguishing gas storage tank decreases, and accordingly, The space occupied by the pressurized gas in the liquefied fire extinguishing gas storage tank in which the pressurized gas is stored increases. When the occupied space in the liquefied fire extinguishing gas storage tank in which the pressurized gas is stored increases, the pressure of the pressurized gas in the liquefied fire extinguishing gas storage tank decreases.

  Therefore, in the conventional fire extinguishing apparatus, a fire extinguishing jet ejected from the nozzle is provided by providing a pressurized gas storage tank and pressurizing the pressurized gas pressurized to a high pressure from the pressurized gas supply valve into the liquefied fire extinguishing gas storage tank. Even if the conveying line is long, the fire extinguishing gas can be discharged from the nozzle without decreasing within a specified time. And the conventional pressurized gas supply valve was equipped with the divider | distributor shown by FIG. 5 or FIG.

  However, the distributor shown in FIG. 5 has holes provided in a direction perpendicular to the flow direction of the pressurized gas. When such a distributor is used, the pressurized gas ejected from the hole may be sprayed on the liquid fire extinguishing gas liquid surface.

  Further, the distributor shown in FIG. 6 has a U-shape and jets high-pressure pressurized gas upward. The pressurized gas ejected upward was transmitted to the liquefied fire extinguishing gas liquid surface in the vicinity of the side wall in the vicinity of the ceiling wall and the side wall of the liquefied fire extinguishing gas storage tank.

  In this way, when the pressurized gas is directly blown onto the liquefied fire extinguishing gas, the pressurized gas and the liquefied fire extinguishing gas are mixed in the liquefied fire extinguishing gas storage tank, and as a result, a pulsation phenomenon occurs. There was a thing. When the pulsation phenomenon occurs, the pressurized gas and the liquefied fire extinguishing gas coexist even in the transport line, and the momentum of the fire extinguishing gas discharged from the nozzle is reduced, and there is a problem that the fire extinguishing gas cannot be released quickly.

  This invention makes it the subject to provide the fire extinguishing apparatus which can supply liquefied fire extinguishing gas continuously to the protection zone where fire extinguishing activity should be performed in order to solve the said problem.

The means of the present invention for solving the above-described problems is to supply a liquefied fire extinguishing gas to a liquefied fire extinguishing gas storage tank for storing the liquefied fire extinguishing gas, a pressurized gas storage tank for storing the pressurized gas, and a protection compartment to be extinguished. The pressurized gas in the pressurized gas storage tank is supplied horizontally to the surface of the liquefied fire extinguishing gas stored in the liquefied fire extinguishing gas storage tank. A pressurized gas supply valve that prevents a decrease in pressure applied to the liquefied fire extinguishing gas stored in the liquefied fire extinguishing gas storage tank, and the pressurized gas supply valve pressurizes the pressurized gas with the pressurization A distributor mounted on a pressurized gas introduction pipe for introducing the gas from the gas storage tank into the liquefied fire extinguishing gas storage tank via a valve adapter, the distributor being opposite to the one end opening mounted on the valve adapter; Has a pressurized gas jet on the end face A reflecting plate disposed parallel to said end face, a fire extinguishing apparatus, characterized in that a gap is formed over the horizontal entire circumference between the reflecting plate and the end face.

  According to this invention, since the liquefied fire extinguishing gas and the pressurized gas are not mixed in the transfer line, the momentum of the fire extinguishing gas discharged from the nozzle can be quickly removed from the nozzle without the deterioration of the transfer line. And the fire extinguishing apparatus of the apparatus structure which can discharge | release continuously can be provided.

  The present invention will be described with reference to examples. The present invention is not limited to the following embodiments, and various design changes can be made within the scope of the gist of the present invention.

  As shown in FIG. 1, a fire extinguisher 1 according to an embodiment of the present invention includes a liquefied fire extinguishing gas storage tank 2, a pressurized gas storage tank 3, and a pressurized gas supply starter 4.

  The liquefied fire extinguishing gas storage tank 2 is filled with a liquid liquefied fire extinguishing gas 5 and a pressurized gas 6. Examples of the liquefied fire extinguishing gas include halon gas. An example of the pressurized gas is an inert gas such as nitrogen gas. The pressurized gas 6 is filled in the liquefied fire extinguishing gas storage tank 2 at a pressure of, for example, 2.5 MPa.

  A first container valve 7 is attached to the top of the liquefied fire extinguishing gas storage tank 2. The first container valve 7 is connected to an introduction pipe 8 that extends in the vertical direction inside the liquefied fire extinguishing gas storage tank 2 and is a transport pipe that is a gas flow path that extends to the middle of each protective section. 9. The transfer pipe 9 is branched into a plurality of branch pipes 10 corresponding to the number of protection sections on the way, which are branch gas flow paths, and an open / close valve 11 is interposed in each branch pipe 10. Each open / close valve 11 is provided with an activation device 12 for opening and closing the valve.

  The starting device 12 is formed to have a function of starting a valve opening device (not shown) in the first container valve 7 at the same time as opening the on-off valve 11 that is normally closed.

  In this embodiment, as shown in FIG. 1, the activation device 12 is connected to a gas introduction pipe 14 for introducing the high-pressure gas in an activation vessel 13 filled with high-pressure gas.

  The gas introduction pipe 14 connected to the starting vessel 13 is normally closed, and when a command signal from the monitoring device 15 is input, the gas introduction pipe 14 is opened. For example, an open valve device 16 formed using a solenoid is interposed.

  A second container valve 17 having the same configuration as the first container valve 7 disposed at the top of the liquefied fire extinguishing gas storage tank 2 is disposed at the top of the pressurized gas storage tank 3. The second container valve 17 is different from the first container valve 7 in that a branch transport pipe 19 branched from the transport pipe 9 is connected in place of the start gas transport path 18 and the transport. Instead of joining the end of the pipe 9, a pressurized gas outlet pipe 20 for leading the pressurized gas to the liquefied fire extinguishing gas storage tank 2 is connected.

  A pressurized gas supply valve 21 that introduces pressurized gas into the liquefied fire extinguishing gas storage tank 2 is mounted on the top of the liquefied fire extinguishing gas storage tank 2.

  The pressurized gas supply valve 21 is provided with a distributor 23 through a valve adapter 22 as shown in FIG.

  In FIG. 1, the starting gas transfer path 18 is drawn so as to connect one starting device 12 and the first container valve 7, but in the present invention, the same number of starting devices 12 and the same number of starting devices 12 as the number of protective compartments are used. The one-vessel valve 7 is connected to each other by an activation gas transfer path 18.

  2 shows a vertical section of the distributor used in the fire extinguishing apparatus according to the present invention, and FIG. 3 shows a horizontal section when the line segment AA ′ in FIG. 2 is cut. In addition, the divider | distributor in this invention is not restricted to what is shown by FIG. 2 and FIG.

  The distributor 23 includes a pressurized gas outlet 24 and a reflection plate 25, and one end opening of the distributor 23 is formed so as to be screwable with the valve adapter 22. And this distributor 23 is arrange | positioned so that the reflecting plate 25 may be located above the liquid level of the liquefied fire extinguishing gas stored in the liquefied fire extinguishing gas storage tank 2.

The material of the distributor 23, if the withstand voltage made of the material is not particularly limited and a known material is used.

  There is no restriction | limiting in particular as a shape of the horizontal cross section in the said distributor 23, For example, triangle shape, square shape, circular shape etc. are mentioned, Especially circular shape is preferable.

  Further, the size of the horizontal section in the distributor 23 is not particularly limited as long as the pressurized gas can be supplied so as to prevent the pressure applied to the liquefied fire extinguishing gas from being lowered.

  The pressurized gas outlet 24 is formed at the other end of the distributor 23 in the same direction as the flow direction of the pressurized gas press-fitted into the distributor 23. Pressurized gas is ejected into the liquefied fire extinguishing gas storage tank 2.

  The number of the pressurized gas ejection ports 24 formed at the other end of the distributor 23 may be one or plural.

  There is no restriction | limiting in particular as a shape of the horizontal cross section in the said pressurized gas jet nozzle 24, For example, triangle shape, square shape, circular shape etc. are mentioned, Especially circular shape is preferable. Moreover, there is no restriction | limiting in particular as a magnitude | size of the horizontal cross section in the said pressurized gas jet nozzle 24. FIG.

  The reflecting plate 25 is a plate that changes the flow direction of the pressurized gas ejected from the pressurized gas ejection port 24. That is, the pressurized gas ejected from the pressurized gas ejection port 24 changes the direction in which it flows in the direction perpendicular to the flow direction of the pressurized gas in the distributor 23 by colliding with the reflector 25.

  The reflection plate 25 is coupled to the other end of the distributor 23 via a support portion 26. The distributor 23, the reflecting plate 25, and the support portion 26 may be formed to be detachable from each other. However, an impact force is applied to the reflecting plate 25 and the support portion 26 by the collision of high-pressure pressurized gas. It is preferable to be integrally formed. The material of the reflecting plate 25 and the support portion 26 is not particularly limited as long as it is a pressure resistant material.

  The shape of the horizontal cross section of the reflecting plate 26 is not particularly limited, but it is preferable that the shape is the same as that of the distributor 23.

  Further, as the size of the horizontal cross section in the reflector 25, as long as the flow direction of the pressurized gas ejected from the pressurized gas ejection port 24 can be horizontal with respect to the liquid fire extinguishing gas liquid surface, Although there is no particular limitation, the size of the horizontal section in the distributor 23 is preferably the same.

  The length of the support portion 26, that is, the distance between the tip portion at the other end of the distributor 23 and the upper surface of the reflector plate is determined by the flow direction of the pressurized gas ejected from the pressurized gas ejection port 24. As long as it becomes horizontal with respect to the liquid fire extinguishing gas liquid level stored in the tank 2, there is no particular limitation.

  When the pressurized gas supply valve as described above is used, the pressurized gas can be press-fitted horizontally into the liquefied fire extinguishing gas storage tank 2 as shown in FIG. Therefore, the pressurized gas injected into the liquefied fire extinguishing gas storage tank does not directly collide with the liquid fire extinguishing gas liquid surface. As a result, it is possible to eliminate the occurrence of liquid movement caused by the mixture of pressurized gas and liquefied fire extinguishing gas, so that the liquefied fire extinguishing gas can be quickly transported to the protective compartment, so that rapid fire extinguishing is possible. It becomes possible.

  In this embodiment, as can be understood from the above description, the pressurized gas supply activation device 4 causes the opening / closing valve 11 to be opened by the activation device 12 and is filled in the fire extinguishing liquefied gas storage tank 2. The liquefied fire extinguishing gas is delivered to the protection compartment, and the pressurized gas in the pressurized gas storage tank 3 is configured to be press-fitted and conveyed to the liquefied fire extinguishing gas storage tank 2. A gas transport path 18, a first container valve 7, a branch transport pipe 19, a second container valve 17, and a pressurized gas outlet pipe 20 are formed.

  The fire extinguishing apparatus having the above configuration operates as follows.

  When the monitoring device 15 detects a fire in the protection zone, a command signal is output from the monitoring device 15 to the open valve device 16 in the startup device 12 to start the startup device 12 corresponding to the protection zone. The open valve device 16 is actuated by the command signal, and the high-pressure gas in the activation container 13 is pressed into the activation device 12 through the gas introduction pipe 14.

  On the other hand, the high-pressure gas press-fitted into the starter 12 is press-fitted into the first container valve 7 through the starter gas transfer path 18.

  When the high-pressure gas is press-fitted into the first container valve 7, the liquefied fire extinguishing gas that has received the pressure of the pressurized gas in the liquefied fire extinguishing gas storage tank 2 is pushed out from the introduction pipe 8 to the carry-out pipe 9 and is opened. It flows to the branch pipe 10 in which the on-off valve 11 is interposed, and is transferred to the protection section.

  In the protection section, liquefied fire extinguishing gas is ejected as a gas from a nozzle (not shown) attached to the end of the branch pipe 10.

  Further, the liquefied fire extinguishing gas press-fitted into the transport pipe 9 reaches the second container valve 17 through the branch transport pipe 19. When the liquefied fire extinguishing gas reaches the second container valve 17, the pressurized gas in the pressurized gas storage tank 3 is pressurized and injected into the liquefied fire extinguishing gas storage tank 2 through the pressurized gas outlet pipe 20 due to the pressure. .

  The above operation is executed instantaneously.

  When the liquefied fire extinguishing gas in the liquefied fire extinguishing gas storage tank 2 is supplied to the protection section via the transport pipe 9, the volume occupied by the pressurized gas (occupied volume) in the liquefied fire extinguishing gas storage tank 2 increases. . When the occupied volume of the pressurized gas increases, the pressure by which the pressurized gas pressurizes the liquefied fire extinguishing gas decreases. However, since the pressurized gas is injected and supplied from the pressurized gas storage tank 3, A decrease in the pressure of the pressurized gas that pressurizes the liquefied fire extinguishing gas that would occur with an increase in the occupied volume is compensated. That is, in the liquefied fire extinguishing gas storage tank 2, the liquefied fire extinguishing gas storage tank is supplied by the pressurized gas supplied from the pressurized gas storage tank 3 in spite of an increase in the pressurized gas occupation volume accompanying a decrease in the amount of the liquefied fire extinguishing gas. A decrease in the pressure of the pressurized gas in 2 is prevented, and the liquefied fire extinguishing gas is supplied to the protection section at a predetermined gas pressure or higher.

  As a result, in the protection section, even if the lengths of the transport pipe 9 and the branch pipe 10 are long, the fire extinguishing gas is released within a specified time without reducing its momentum, and the fire extinguishing action by the fire extinguishing gas is reduced. Is executed.

  As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example.

  For example, in the present invention, as long as the pressurized gas is supplied from the pressurized gas storage tank to the liquefied fire extinguishing gas storage tank simultaneously with the release of the liquefied fire extinguishing gas from the liquefied fire extinguishing gas storage tank, Various configurations other than those shown in the example fire extinguishing device can be employed.

  For example, instead of the pressurized gas supply activation device that operates the on-off valve, the first container valve, and the second container valve by gas pressure, the on-off valve, the first container valve, and the second container valve are received by receiving an electrical signal. It is also possible to employ a pressurized gas supply activation device configured to operate.

  The number of liquefied fire extinguishing gas storage tanks is not limited to one, and a plurality of liquefied fire extinguishing gas storage tanks may be provided, and a plurality of pressurized gas storage tanks may be provided. In that case, for example, one liquefied fire extinguishing gas storage tank and one pressurized gas storage tank are arranged from the first protection section to the tenth protection section, and from the eleventh protection section to the twentieth protection section, A plurality of protective compartments are blocked such that another one liquefied fire extinguishing gas storage tank and another one pressurized gas storage tank are provided, and the fire extinguishing apparatus according to the present invention is provided for each block. May be.

  Furthermore, when the amount of the liquefied fire extinguishing gas stored in one liquefied fire extinguishing gas storage tank is insufficient, a plurality of liquefied fire extinguishing gas storage tanks are provided, and the liquefied fire extinguishing gas in one liquefied fire extinguishing gas storage tank is provided. It is also possible to configure so that the liquefied fire extinguishing gas in the next liquefied fire extinguishing gas storage tank is transported to the transport pipe when the exhaust is exhausted.

FIG. 1 is a conceptual diagram showing a configuration example of a fire extinguishing apparatus according to the present invention. FIG. 2 is a sectional view of a distributor used in the fire extinguishing apparatus according to the present invention. FIG. 3 is a diagram showing a cross section of the reflector and the support when the line segment AA ′ is cut in FIG. 2. FIG. 4 is a diagram showing the flow of pressurized gas radiated from the distributor shown in FIG. FIG. 5 is a diagram showing the flow of pressurized gas radiated from a conventional distributor and the state of the liquid level of the liquefied fire extinguishing gas. FIG. 6 is a diagram showing the flow of pressurized gas radiated from a conventional U-shaped distributor and the state of the liquid level of the liquefied fire extinguishing gas.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fire extinguishing apparatus 2 Liquefied fire extinguishing gas storage tank 3 Pressurized gas storage tank 4 Pressurized gas supply starting apparatus 5 Liquefied fire extinguishing gas 6 Pressurizing gas 7 1st container valve 8 Introducing pipe 9 Unloading pipe 10 Branch pipe 11 Opening / closing valve 12 Starting apparatus DESCRIPTION OF SYMBOLS 13 Starting container 14 Gas introduction pipe 15 Monitoring apparatus 16 Opening valve apparatus 17 2nd container valve 18 Starting gas conveyance path 19 Branch conveyance pipe 20 Pressurized gas outlet pipe 21 Pressurized gas supply valve 22 Valve adapter 23 Distributor 24 Pressurized gas Spout 25 Reflecting plate 26 Support part a Liquefied fire extinguishing gas b Bubble pressurized gas c Flow direction of pressurized gas d Pressurized gas layer

Claims (1)

When supplying the liquefied fire extinguishing gas storage tank for storing the liquefied fire extinguishing gas, the pressurized gas storing tank for storing the pressurized gas, and the liquefied fire extinguishing gas to the protective compartment to be extinguished, Liquefaction stored in the liquefied fire extinguishing gas storage tank by supplying the pressurized gas in the pressurized gas storage tank to the surface of the liquefied fire extinguishing gas stored in the liquefied fire extinguishing gas storage tank in a horizontal direction. A pressurized gas supply valve that prevents a decrease in pressure applied to the fire extinguishing gas, and the pressurized gas supply valve introduces the pressurized gas from the pressurized gas storage tank to the liquefied fire extinguishing gas storage tank. A distributor mounted on a pressurized gas introduction pipe via a valve adapter, the distributor having a pressurized gas outlet on an end surface opposite to the one end opening mounted on the valve adapter; A reflector arranged in parallel with Fire extinguishing apparatus characterized by gaps, which are formed over a horizontal direction the entire circumference between the serial end face and the reflector.

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