JPH0824358A - Smell-giving device for fire extinguishing facility for gas system - Google Patents

Abstract

PURPOSE:To surely warm the discharge and flow-out of a fire extinguishing agent at a low cost. CONSTITUTION:A cylinder 1 filled with a smell-giving agent is fitted through a connecting pipe in the middle of piping to a fire extinguishing agent and a protection object area to discharge that fire extinguishing agent to a cylinder chamber 4 formed by idly and freely moving a piston 2, the piston 2 is provided with a flow-out port 8 for communicating the cylinder chamber 4 and the piping, a sealing plate hole 21 for fitting a socket 7 for sealing plate internally mounting a sealing plate 9 is provided on the surface of the piston 2 on the connecting pipe side, and the flow-out port 8 provided at the piston 2 is closed by the socket 7 for sealing plate and the sealing plate 9 to be opened by fixed pressure. Therefore, the structure is simplified, the piping is easily designed against any change in the diameter of piping or the amount of a smell-giving agent, and maintenance is facilitated as well. Concerning all the protection object areas to discharge the fire extinguishing agent, the discharge of the fire extinguishing agent is warned and even when the fire extinguishing agent flows out to the corridor, stairs room or adjacent protection object area, the discharge of the fire extinguishing agent can be surely warned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas fire extinguishing system, and more particularly to an odor device installed in a fire extinguisher container and a pipe extending to a section to be protected from which the fire extinguishing agent is discharged. More specifically, in a gas fire extinguishing system, in a fire extinguishing operation, a fire extinguishing agent discharges a protection target compartment and a location where the fire extinguishing agent discharged to the protection target compartment may flow out (adjacent protection target compartment). , Corridors, staircases, etc.)
If a person is left in the area, there is a risk of suffocation due to extinguishing agent released and spilled. As a countermeasure, the present invention relates to a warning means for warning that the fire extinguishing agent is immediately discharged from the protected area and a place where the fire extinguishing agent may leak when the fire extinguishing agent is released.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 6-54921 discloses, as a warning means of this kind, a method of warning the release of a gas-based fire extinguishing agent by releasing a substance of an odor component when the gas-based fire extinguishing agent is released during a fire fighting operation. No. "Fire extinguishing equipment for carbon dioxide" and JP-A-6-165839 "Fire extinguishing gas system" are known.
The former JP-A-6-54921 "Fire extinguishing equipment for carbon dioxide gas"
Is provided with an odor component cylinder in addition to a carbon dioxide gas storage cylinder as a fire extinguishing agent, and mixes the fire extinguishing agent and the odor component at the time of the fire extinguishing activity and releases them simultaneously (first embodiment), or with the odor component cylinder. A pipe connected to the jet port is provided independently of the fire extinguisher pipe, and is discharged from the jet port arranged at a position different from the fire extinguishing agent discharge position (second embodiment). Also, the third
The embodiment discloses that a fire extinguisher mixed with an odor component is released during a fire extinguishing activity by mixing and storing an odor component in a carbon dioxide gas storage cylinder as a fire extinguishing agent. The latter JP-A-6-165839 "gas fire extinguishing equipment" is similar to the former JP-A-6-54921 "carbon dioxide fire extinguishing equipment" by mixing an odor component into a carbon dioxide gas storage cylinder as a fire extinguishing agent. Release fire extinguishing agents mixed with odor components during fire fighting activities by storing
Example), in addition to a carbon dioxide gas storage cylinder which is a fire extinguisher, a cylinder for an odor component is provided side by side to simultaneously release the fire extinguisher and the odor component during a fire extinguishing activity (second embodiment), As a third embodiment, it is disclosed that an odor substance emitting device is provided separately from a device for emitting gas of a fire extinguishing agent.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-mentioned prior art, by releasing the substance of the odor component at the same time as the extinguishing agent is released during the fire extinguishing activity, the release of the gas-based extinguishant into the protected compartment to be extinguished. Although it notifies the release of the extinguishing agent by releasing the substance of the component, the structure is complicated by adding the equipment such as the odor component substance storage cylinder and the odor component substance piping, and the existing fire extinguishing equipment There is a problem that the cost increases to equip it with. In addition, by mixing and storing the odor component substance in the carbon dioxide gas storage cylinder, which is a fire extinguishing agent, the odor component substance is mixed with the fire extinguishing agent released from the carbon dioxide gas storage cylinder. There is a problem that the amount of the odor component substance cannot be selected so as to be adapted to the area, shape, etc. of the section. In addition, an odor substance dispersing device is installed independently of the fire extinguisher gas emission device, and the piping for the odor component cylinder and its spout is installed separately from the fire extinguisher piping to provide a fire extinguishing agent. In the known technology, the gas is discharged from the ejection port arranged at a position different from the discharge position.
By setting the compartment where the odorant emits independently of the compartment where the fire extinguisher is released and discharged, the warning by the emission of the odorant is given for all the extinguishing agent release locations and all the locations where the fire extinguisher is released. There is a problem that cannot be secured. Therefore, the present invention reduces the odor device in the existing fire extinguishing equipment by making it possible to freely install the odorant device in the fire extinguishing equipment at an appropriate location in the piping leading to the fire extinguishing agent container and the protection target compartment from which the fire extinguishing agent is released. It is an object of the present invention to be able to equip it at a cost and to easily set the amount of a substance of an odor component. further,
During fire-extinguishing work, the protected area to which the extinguishing agent is released and the protected area adjacent to the protected area, the corridor,
An object of the present invention is to reliably warn a place where a fire extinguishing agent may flow out, such as a staircase, of a danger of suffocation caused by the discharged and discharged fire extinguishing agent.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a cylinder 1 in which a piston 2 is formed so as to be freely movable is filled with an odorant is used as a fire extinguishant container and a protection target for releasing the extinguishant. It is attached via a connecting pipe in the middle of the pipe leading to the compartment, the piston 2 is provided with an outflow port 8 for communicating the cylinder chamber 4 and the pipe, and a sealing plate 9 is provided on the surface of the piston 2 on the connecting pipe side. A gas is characterized in that a sealing plate hole 21 for mounting the plate socket 7 is provided, and the outlet 8 provided in the piston 2 is closed by the sealing plate socket 7 and the sealing plate 9 that is opened by a constant pressure. Provide an odor device for fire extinguishing equipment.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to FIGS. 1 and 2. The cylinder 1 can be freely mounted via the connecting pipe 3 at an appropriate position in the pipe 10 from the fire extinguishing agent container to the section to be protected.

[0006] The piston 2 is inserted into the cylinder 1, and the inside of the cylinder 1 is sealed by an O-ring 13 to form a cylinder chamber 4 whose volume changes as the piston 2 moves.
The cylinder chamber 4 is filled with an odorant to make the cylinder 1 function as an odorant case. The base end (upper end) of the rod 5 is fixed to the center of the surface of the piston 2 on the cylinder chamber 4 side (the lower surface in the embodiment), and the tip end (lower end) of the rod 5 is fixed to the top wall 11 of the cylinder 1. The tip (lower end) 51 of the rod 5 is penetrated through the through hole 12 so that the rod 5 projects from the top surface of the cylinder 1. The O-ring 14 seals the cylinder 1 and the tip (lower end) of the rod 5. It should be noted that the filling port is not particularly necessary because the filling of the odorant is performed prior to the mounting of the piston 2, but in the embodiment, the filling port 15 is attached to the lower portion of the side wall of the cylinder 1. 16
Is a gasket and 17 is a cap.

A stopper 6 for preventing rod movement is attached to the top wall 11 of the cylinder 1 with a screw 20. When the stopper is used, the stopper 6 is rotated to allow the rod 5 to move freely. The tip (lower end) 51 of the rod 5 is opposed to the rod 51 to prevent the rod 5 from moving.

A sealing plate hole 21 for mounting the sealing plate socket 7 is provided on the pipe-side surface (upper surface) of the piston 2, and an outlet 8 for communicating the cylinder chamber 4 with the sealing plate hole 21 is provided in the piston 2. The sealing plate 9 is inserted into the sealing plate hole 21 so that the outlet 8, the sealing plate 9, and the vertical hole 7 a in the sealing plate socket 7 exist between the cylinder chamber 4 and the pipe 10. In FIG. 2, reference numeral 18 denotes a gasket inserted into the sealing plate 9 and the outlet 8 side,
19 is a stopper for preventing the piston from coming off. In FIG. 1, n is a screw engaging portion.

Further, in the above-mentioned first embodiment, the odorant is arranged to be discharged upward in the pipe. However, even if the odorant is arranged to be reversed upside down, that is, it is discharged downward, the present invention can be used. It can achieve the purpose. Although the odorant does not flow out by the sealing plate 9 during transportation or storage, the screw engaging portion n may be capped to prevent the odorant from flowing out through the opening of the outlet 8.

When the odorizing device of the present invention is installed in a proper place of the pipe 10 of a gas-based fire extinguishing facility, the rod movement preventing stopper 6 is rotated to a non-acting position to freely move the rod 5. . When a fire occurs, a fire extinguishing agent is discharged from the fire extinguishing agent container to the pipe 10, and the pressure in the pipe becomes P0.
When the pressure P ₀ due to the extinguishant is applied to the pipe 10, the load F ₁ is applied to the piston 2.

[Equation 1] As a result, it moves downward until the pressure P ₁ of the cylinder chamber 4 becomes a pressure P ₀ and the same pressure. Here, the load F ₁ is applied downward to the piston and the rod.

The biston 2 has a downward load: F ₁ and a downward load: F ₂

[Equation 2] It takes each. Since P ₀ and P ₁ may be regarded as the same pressure, if P ₀ = P ₁ , the downward load: F ₃ is

(Equation 3) (The atmospheric pressure may be neglected in the calculation compared to the pressure value in the pipe, and the weight of the piston and cylinder, and the sliding resistance of the O-ring are negligible values. ).

The sealing plate opens upward, and as the piston and the rod move further downward, the odorant passes through the opening (vertical hole 7a) of the sealing plate socket and flows into the pipe 10 to be mixed. Thus, the extinguishant mixed with the odorant is supplied to the pipe 10 extending from the extinguishant container to the protected area.
The protected area is filled with "odor" by the odorant,
The fire extinguishing agent will be informed.

The pressure P ₁ in the cylinder chamber 4 is determined by the following equation.

[Equation 4] The burst pressure difference ΔP of the sealing plate 9 is expressed by the following equation.

(Equation 5)

That is, similarly to the pressure P ₁ in the cylinder chamber 4, the rupture pressure difference ΔP of the sealing plate 9 is determined by the pressure P ₀ in the pipe, the diameter (outer diameter) A of the rod 5, and the diameter of the cylinder chamber 4. Since it can be determined by the dimension B, it is easy to determine various conditions (airtightness, burst pressure value, size, thickness) necessary for the design of the sealing plate. Further, the orifice D can be freely changed to change the amount and time of release of the odorant. The orifice D is set on the outlet side in the embodiment, but is not limited to the outlet side, and may be provided in the vertical hole 7 a of the sealing plate socket 7.

Therefore, the present invention has a great advantage in that each of the diameters A and B can be freely set (although the size of the O-ring is limited), and various conditions (airtightness) required for designing the sealing plate are provided. Properties, burst pressure values, dimensions, and thickness) can be solved by examining only the diameters A and B. The amount of odorant can be manufactured in various sizes by selecting the diameter B. Is simple, parts can be created by extremely common manufacturing techniques, and of course, repairs and the like do not require special abilities.

[0016]

As described above, the present invention has a simple structure in a gas fire extinguishing system as an odor device installed in the middle of a pipe leading to a fire extinguishing agent container and a section to be protected from which the fire extinguishing agent is released. Therefore, the design for the change in the pipe diameter, the amount of the odorant, etc. is easy, and the maintenance is easy. In addition, by having a sealing plate socket equipped with a sealing plate at a constant pressure, the outlet of the piston is shielded, so that the mounting direction with respect to the piping can be set to other than upward (downward, sideways, inclined direction, etc.). It can be installed at almost all points of the existing pipes, and can prevent the odor component substances from leaking into the pipes and can reliably store the odor component substances in the cylinder chamber until the fire extinguishing activity. Further, since the odor device of the present invention is installed in the middle of the pipe,
A warning is given to all protected compartments that release fire extinguishing agents by emission of odorous substances, and fire extinguisher that has been released to the fire-extinguishing target compartments, such as corridors, staircases, and adjacent target compartments, may be released. When a fire extinguishing agent released to a protection target section of a fire extinguishing target leaks out from a gap in a damper, a gap in a fire door, etc., a fire extinguishing agent is released along with the fire extinguishing agent. A warning can be given without fail.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an odor device of a gas fire extinguishing system, showing an embodiment of the present invention.

FIG. 2 is a partial longitudinal sectional view of a main part of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder 2 Piston 7 Socket for sealing plate 8 Outlet 9 Sealing plate 10 Piping

Claims (2)

[Claims] 1. A gas-based fire extinguishing system, comprising: an odorant device disposed in the middle of a pipe leading to a fire extinguisher container and a section to be protected from which the fire extinguishing agent is released, wherein the odor device is attached to the pipe via a connecting pipe; A cylinder 1 filled with an odorant is provided in a cylinder chamber 4 in which a piston 2 is configured to be freely movable. An outlet 8 is provided in the piston 2 for communicating the cylinder chamber 4 with a pipe. The base end of the rod 5 is fixed to the center of the
1, the tip 51 of the rod 5 protrudes from the top surface of the cylinder 1, and a sealing plate hole 21 for mounting a sealing plate socket 7 containing a sealing plate 9 on the connection pipe side surface of the piston 2. An odor device for gas fire extinguishing equipment, characterized in that the outlet 8 provided in the piston 2 is closed by a sealing plate socket 7 and a sealing plate 9 opened by a constant pressure. 2. A rod movement preventing stopper 6 is rotatably attached to the top wall 11 of the cylinder 1 so that the rod 5 can be freely moved during use to prevent the rod movement. The odor device for gas fire extinguishing equipment according to claim 1 or 2, wherein the stopper 6 is provided so as to be opposed to the tip 51 of the rod 5 so as to prevent movement of the rod 5.