JPH0445731Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a fire extinguishing system using carbon dioxide gas or halon gas, and more particularly to a local gas fire extinguishing system that extinguishes objects by directly emitting fire to the object to be extinguished.

[Conventional technology]

There are two types of fire extinguishing gas release methods: the whole area method and the local method.The former extinguishes the entire room where the object to be extinguished exists, and the latter releases extinguishing gas locally to or directly onto the object to extinguish the fire. It is something.
In particular, the local method is used for extinguishing objects located in large spaces where it is difficult to employ the entire area method.

[Problems to be solved by the invention] In the local method, in order to distribute sufficient extinguishing gas to the object to be extinguished, piping is installed around the object to be extinguished and a plurality of fixed heads are attached. However, such piping not only obstructs work during normal operation, but also poses problems such as complicated construction and high installation costs.

[Means for solving problems]

This invention consists of a gas discharge nozzle that is rotatably supported by the main body and connected to a fire extinguishing gas introduction pipe, a swinging pinion/rack gear that is engaged with the gas discharge nozzle, and a swinging pinion/rack gear that moves the rack gear over a certain distance. A pressurized gas operated valve that alternately pressurizes pressurized gas from both ends of the cylinder, and a mechanically operated valve that is interlocked with the rack gear and opened and closed in a predetermined movement range of the rack gear. The above problem is solved by configuring the pressurized gas operated valve to be controlled by the mechanically operated valve.

[Effect]

With this configuration, the gas discharge nozzle swings its head up and down or left and right at a predetermined angle, so that the extinguishing gas is evenly radiated onto the object to be extinguished, even if it is somewhat wide.

〔Example〕

Next, the local gas fire extinguishing system of this invention will be explained in detail with reference to drawings showing one embodiment thereof.

FIG. 1 is a control piping system diagram using pressurized gas, in which a fire extinguishing gas introduction pipe 15 connected to the gas discharge nozzle 1 and a pressurized gas introduction pipe 14 for introducing pressurized gas for control are provided in the main body 30. It is being Note that when the fire extinguishing gas is commonly used as the pressurized control gas, a single introduction pipe 14 and 15 may be used.

Pressurized gas injected from the inlet pipe 14 is branched into three branch pipes a, b, and c by the input manifold 12, branch pipes a and b are connected to mechanically operated valves 7 and 8, and branch pipe C is connected to mechanically operated valves 7 and 8. The pressurized gas operated valves 11 are respectively introduced. The pressurized gas operated valve 11 is a mechanically operated valve 7,
Dual use pipes 9 and 1 for intake and exhaust are connected to both ends of the air cylinder 6 by air pressure alternately injected from 8.
The pressurized gas from the branch pipe C is connected to the branch pipe C and is alternately injected.

Flow rate adjustment valves 91 and 101 provided in the middle of the intake and exhaust pipes 9 and 10 are used to adjust the movement speed of the piston 16, and are designed to optimize the swing speed of the gas discharge nozzle 1, which will be described later, for extinguishing a fire. is adjusted in advance.

Piston rod 61 extending from piston 16
The pinion gear 2 is engaged with a rack gear 3, and the pinion gear 2, which is converted into rotational motion by the rack gear 3, is connected to the gas discharge nozzle 1 directly or by a gear, a chain, or the like.

The rack gear 3 is provided with adjusting pieces 4 and 5 for limiting the movement distance l to the left and right, and the inclined surfaces 41 and 51 of the adjusting pieces 4 and 5 control the valves provided in the mechanically operated valves 7 and 8. The operating knobs 71, 81 are set to be pushed down at predetermined positions.

Fig. 2 is an external view of the local gas fire extinguishing equipment of this invention, in which Fig. 2 A shows its front view, B shows its side view, and C shows its top view. 31 and 32 are connected by an elevation adjustment joint 33, and a gas discharge nozzle 1 is provided at the tip of the second arm. Nozzle 1 is the second
The head swings left and right as shown by the dotted line in FIG.

Now, in the state shown in FIG. 1, when pressurized gas is introduced from the pressurized gas introduction pipe 14, it is introduced into the cylinder 6 from the valve position of the pressurized gas operated valve 11 as shown in the figure through the dual-purpose intake and exhaust pipe 9. Pressurized gas is injected into the right side, pushing the piston 16 to the left. As a result, the rack gear 3 is engaged with the piston rod 61.
moves to the left, and when it reaches the specified position, the adjustment piece 5
, the valve operating knob 81 of the mechanically operated valve 8 is pushed down, and the pressurized gas introduced into the branch pipe b passes through the pipe e as shown by the arrow in the figure to the pressurized gas operated valve 1.
1 and moves the valve 11 to the right. valve 11
By moving to the right, the pressurized gas from the branch pipe c is now introduced to the dual-use pipe 10 side, is press-fitted into the left side of the cylinder 6, and pushes the piston 16 to the right. After that, the rack gear 3, the adjusting piece 4, and the mechanically operated valve 7 are connected to the aforementioned rack gear 3.
operates in the same way as for the movement to the left, and then
These operations are repeated, and the nozzle 1 in conjunction with the pinion gear 2 swings.

[Effect of idea]

The local gas fire extinguishing system of this invention radiates extinguishing gas while swinging the discharge nozzle within a constant angular range toward the object to be extinguished. Even without installing a plurality of fixed heads, extinguishing gas can be evenly distributed over the object to be extinguished using one discharge nozzle. Furthermore, since the extinguishing gas can be used as the power source for the swinging motion, there is no need to prepare a separate power source.

[Brief explanation of the drawing]

Figure 1 is a control piping system diagram of the local gas fire extinguishing equipment of this invention, and Figure 2 is its external view. Figure 2A is a front view, Figure 2B is a side view, and Figure 2C is a top view. are shown respectively. 1... Gas discharge nozzle, 2, 3... Pinion
Rack gear, 7, 8... mechanically operated valve, 6... cylinder, 16... piston, 11... pressurized gas operated valve, 14... extinguishing gas introduction pipe, 15... pressurized gas introduction pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A gas discharge nozzle rotatably supported by the main body and connected to a fire extinguishing gas introduction pipe, and an oscillating pinion/rack gear engaged with the gas discharge nozzle. , a piston and a cylinder that move the rack gear within a certain distance range, a pressurized gas operated valve that alternately pressurizes pressurized gas from both ends of the cylinder, and a pressurized gas operated valve that operates in conjunction with the rack gear and opens and closes within a predetermined movement width of the rack gear. 1. A local gas fire extinguishing system, comprising: a mechanically operated valve, the pressurized gas operated valve being controlled by the mechanically operated valve. (2) The local gas fire extinguishing system according to claim 1, which is characterized in that a fire extinguishing gas is used as the pressurized gas.