JPS61255673A - Use detector in pressure type fire extinguisher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a so-called pressurized fire extinguisher that discharges extinguishing agent in a fire extinguishing agent container to the outside using pressurized gas such as carbon dioxide gas.

In particular, the present invention relates to a detection device for detecting whether the fire extinguisher is used or not.

Conventional technology As a convenient way to know whether a fire extinguisher is used or not, a so-called lock mark made of plastic is attached to the lever of the fire extinguisher, and when the lever is squeezed when extinguishing a fire, the lock mark is released. There is a method in which the lock mark is mechanically removed from the lever to notify that the fire extinguisher has been used. However, this lock mark can be removed manually from the lever when not working on extinguishing a fire. Therefore, it is difficult to say that it is a reliable way to notify whether a fire extinguisher is used or not.

Problems to be Solved by the Invention In view of the above points, an object of the present invention is to provide a detection device that can reliably and easily confirm whether a pressurized fire extinguisher is in a usable state. shall be.

Means to Solve the Problem The above purpose is to make the sealing material and destruction member of the pressurized gas container with conductive materials, use the art material as a contact point, and send an electrical signal through the art material when the art material comes into contact with it. This is accomplished by detecting that the seal material has been destroyed.

EXAMPLES Hereinafter, the present invention will be explained with reference to examples. FIG. 2 is an overall view of a fire extinguisher to which the used detection device according to the present invention can be applied. In the figure, 1 is a fire extinguishing agent container containing a fire extinguishing agent, 2 is a pulp attached to the upper end of the extinguishing agent container 1 by a pulp cover 3, 4 is a lever attached to the upper end of the pulp 2, and 5 is a pulp An external hose extends from 2.

The extinguishing agent container 1, the pulp 2, the pulp cover 3, and the lever 4 are all made of conductive material.
As shown in FIG. 1, it has a lower lever 6 fixed to the pulp 2 and an upper lever 8 pivotally connected to the lower lever 6 in the bin 7.The lower end of the upper lever 8 has a generally cylindrical breaking member. 9 is loosely fitted, and this destruction member 9 moves in the vertical direction according to the vertical movement of the upper lever 8. The breaking member 9 is made of electrically conductive material.

The pulp 2 is provided with vertical through holes 10,
A destructive member 9 is inserted into this through hole IO. However, the breaking member 9 is supported by an electrically insulating bushing 11, and the 17th wheel 12 is also made of an electrically insulating material.
The destructible member 9 and the pulp 2 are electrically insulated by the O which is insulated from the destructible member 9 and the pulp 2. Furthermore, the destruction member 9 and the lever 4
They are also insulated from each other in the same way.

A pressurizing gas container 13 is attached to the lower end of the pulp 2 so as to communicate with the through hole 10. A pressurizing gas, such as carbon dioxide gas, is sealed in the interior 14 of the pressurizing gas container 13, and its upper end, that is, the portion communicating with the through hole 10, is sealed with a sealing material 15, which is a conductive thin film material. The sealing material 15 is electrically connected to the pulp 2 and the fire extinguishing agent container. In FIG.
This is a gas delivery hose that communicates with the through hole 10 via.

Reference numeral 18 is a agent delivery pipe provided in the pulp 2,
It connects the agent hose 19 (hidden behind the gas outlet hose 16 in the figure) and the external hose 5.

Since the mechanical configuration of this embodiment is as described above, if the fire extinguisher grasps the lever 4 and rotates the upper lever 8 downward,
The destruction member 9 moves downward and its tip destroys the sealing material 15. Then, the gas in the pressurizing gas container 13 is sent out into the interior of the fire extinguisher container 1 via the thin tube 17 and the gas delivery pipe 16. Due to this pressure, the extinguishing agent (not shown) in the container 1 is discharged to the outside air through the agent hose 19, the agent delivery pipe 18, and the external hose 5, and is used for fire extinguishing work.

Once a fire extinguisher has been used for fire-fighting work, a new fire extinguisher or a fire extinguisher refilled with extinguishing agent and the pressurized gas container replaced with a new one shall be installed in place of the used extinguisher. Equipment must be kept in place. If used items were left in the same place again, it would cause trouble when trying to extinguish the fire again.

To prevent this, conventionally, a lock mark 20 is attached to the lever 4 as shown in Figure 1, and when the upper lever 8 is lowered, the lock mark 20 is removed from the lever 4, and the fire extinguisher is used. I just wanted to let you know. However, since this method alone has low reliability in informing users that the device has been used, the following measures are taken in addition to this method in this embodiment.

That is, as shown in FIG.
5 is used as a contact point in a series circuit between the DC power supply (2) and a so-called keep relay circuit 21.

The keep relay circuit 21 can switch between two states: a non-conducting state indicating that no electrical signal flows through the circuit, and a conducting state indicating that an electrical signal flows through the circuit. After that, the conductive state can be maintained even if no electrical signal flows through the circuit. The specific structure of the keep relay circuit 21 that performs such an action is well known in the art, so a description thereof will be omitted.

Since the electric control system as described above is provided, when the destructive member 9 destroys the sealing material 15 during fire extinguishing work, when the two come into contact, the DC circuit shown in FIG. 3 is closed and the keep relay circuit 21 changes to a conductive state. .

This state is maintained even if the destructive member 9 and the sealing material 15 are no longer in contact with each other, so the fire extinguisher can always know that the fire extinguisher has been used by checking this state.

In order to make it easier to confirm that the keep relay circuit 21 is in a conductive state, it is convenient to attach a display device such as a lamp 22 to the keep relay circuit 21 that lights up when the circuit is in a conductive state. It is.

In the above embodiment, a so-called keep relay circuit having a self-holding function is used as a means for detecting that an electric signal flows through the circuit, but various other means can be applied.

For example, as the simplest method, a fuse can be provided in the circuit, and the fuse can be blown at the same time as an electric signal flows, thereby detecting that the battery has been used.

Effects According to the present invention, since it is determined whether the fire extinguisher is used or not based on the contact between the destructive member and the sealing material, it is possible to know with certainty whether the fire extinguisher is used or not.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of one embodiment, FIG. 2 is a perspective view of the entire fire extinguisher, and FIG. 3 is an electric circuit diagram of one embodiment. 1... Fire extinguisher container 15... Seal material 13.
... Pressurizing gas container 4 ... Lever 9 ... Destruction member 21 ... Keep relay Fig. 1

Claims (1)

[Claims] A fire extinguishing agent container containing a fire extinguishing agent, a pressurizing gas container placed inside the fire extinguishing agent container and filled with pressurized gas and further equipped with a sealing material, and a pressurizing gas container placed outside the fire extinguishing agent container and used for fire extinguishing operations. A lever that is moved vertically, a destructive member that moves in conjunction with the movement of the lever and presses the sealing material to destroy the sealing material, and the sealing material and the destructive member are used as contact points to destroy the art materials when they come into contact with each other. 1. A used detection device for a pressurized fire extinguisher, comprising means for detecting destruction of a sealing material by sending an electric signal through the extinguisher.