JPH0675603B2 - How to activate automatic fire extinguisher - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automatic fire extinguisher start-up method for preventing a fire by starting the automatic fire extinguisher before a fire occurs.

[Prior Art] A conventional automatic fire extinguishing system is started based on a detection result of a detecting means such as a heat detector, a smoke detector, a flame detector, or a gas detector which has already detected a fire. There is.

[Problems to be Solved by the Invention] However, the conventional method for activating an automatic fire extinguisher as described above is only a method for extinguishing a fire after it has occurred, and therefore how quickly the fire should be extinguished. Even if it could be done, the burnout could not be completely prevented.

The present invention has been made in view of such circumstances, and an object thereof is to provide a method for activating an automatic fire extinguisher to prevent a fire from occurring in advance.

[Means for Solving the Problems] In order to achieve the above object, an automatic fire extinguisher starting method according to the present invention is provided with an oil absorbing wall for blocking the flow in a liquid inflow path, and the inside of the wall of the oil absorbing wall It is characterized in that the flammable liquid accumulated in and / or the flammable liquid absorbed in the oil absorbing wall is detected, and the automatic fire extinguisher is activated before a fire occurs based on the detection result. The flammable liquid absorbed in the oil absorbing wall can be detected by, for example, detecting heat of vaporization from the oil absorbing wall or measuring the electric resistance value of the oil absorbing wall.

[Operation] With the above configuration, when the flammable liquid flows into the place where the oil absorbing wall is provided, the automatic fire extinguisher can be activated before a fire occurs.

[Examples] Hereinafter, the present invention will be described based on illustrated examples.

FIG. 1 is a schematic configuration diagram of an apparatus for carrying out the method of the present invention, in which 1 is an automatic fire extinguisher and 2 is an oil absorbing wall.

The automatic fire extinguisher 1 is provided with a medicine emitting mechanism (not shown) for emitting a fire extinguishing agent, an alarm mechanism (not shown) for giving an alarm sound or an alarm display, etc., and these medicine emitting mechanism and alarm mechanism are external. It can be activated by a signal.

The oil absorbing wall 2 is, for example, as shown in FIG. 2, fixed on the floor surface A1 of the absorbing member 21 that absorbs only oil so as to block the liquid inflow path A, and The absorbent sheet 22 is attached to absorb all liquids including oils. The absorption sheet 22 is on the liquid inflow side (arrow F in the figure).
(Side) surface is in contact with the floor surface and extends across the absorbent member 21 on the opposite side surface. Is a passage for circulating the inflow side surface to the opposite side surface. Therefore, liquids other than the flammable liquid do not collect on the liquid inflow side of the oil absorbing wall 2. In addition, liquids other than the flammable liquid are not absorbed by the absorbing member 21. On the other hand, when the inflowing liquid is a flammable liquid, this flammable liquid is absorbed by the absorbing member 21.
And is absorbed by the absorbent sheet 22, and accumulates on the liquid inflow side of the oil absorbing wall 2. However, 23 in FIG. 2 is a fixing member for fixing the absorbing member 21 to the floor surface A1,
Reference numeral 24 is a mounting bolt for fastening the fixing member 23 to the floor surface A1 side. The mounting bolt 24 is screwed into an anchor bolt 25 embedded in the floor surface A1.

In FIG. 1, reference numeral 3 denotes a resistance measuring device for measuring the electric resistance value of the oil absorbing wall 2, and a detection signal generated by the resistance measuring device 3 is sent to the automatic fire extinguisher 1.
This detection signal, for example, sets a predetermined electric resistance value,
It is designed to be generated when the sensed electric resistance value reaches the set electric resistance value. This detection signal becomes an external signal for activating the medicine emitting mechanism or alarm mechanism of the automatic fire extinguisher 1.

In the structure shown in FIG. 1 as described above, the combustible liquid flows in from the liquid inflow side of the oil absorbing wall 2 and the absorbing member 21
When the absorbent sheet 22 absorbs the flammable liquid, the electric resistance value of the oil absorbing wall 2 increases as the amount of the flammable liquid absorbed increases. Then, when the amount of the absorbed combustible liquid exceeds a predetermined amount, the resistance measuring instrument 3 generates a detection signal and sends it to the automatic fire extinguisher 1. The automatic fire extinguisher 1 activates the alarm mechanism or the medicine emitting mechanism according to the received detection signal. The alarm mechanism is activated, for example, to notify that there is a possibility that the inflowing combustible liquid amount may flow out beyond the oil absorbing wall 2. In addition, the medicine emitting mechanism emits a fire extinguishing agent before a fire occurs, and is activated to prevent a fire due to the flammable liquid that has flowed out.

In addition, the resistance measuring instrument 3 is made to generate a detection signal separately when measuring two different electrical resistance values, and the automatic fire extinguisher 1 receives the first detection signal from the resistance measuring instrument 3. At this time, the alarm mechanism may be activated, and the drug emission mechanism may be activated when the second detection signal is received.

By the way, in the above embodiment, the resistance measuring device 3 measures the electric resistance value of the oil absorbing wall 2 to detect the amount of the combustible liquid absorbed in the oil absorbing wall 2. The heat of vaporization generated from the absorption wall 2 may be sensed, and when the heat of vaporization is sensed, the alarm mechanism or the medicine emitting mechanism of the automatic fire extinguisher 1 may be activated. In this case, the resistance measuring device 3 in FIG. 1 only replaces the vaporization heat detector.

As a detection signal for activating the automatic fire extinguisher 1, the amount of the flammable liquid accumulated on the liquid inflow side of the oil absorption wall 2 is measured, and the detection signal generated when the amount reaches a predetermined amount is also used. Good. Such a detection signal can be generated by the liquid level sensor 4 provided on the liquid inflow side of the oil absorbing wall 2 as shown by the chain line in FIG. In this case, the liquid level sensor 4 individually generates detection signals according to two or more liquid amounts detected, and each detection signal individually activates various functions of the automatic fire extinguisher 1. You may do it.

Furthermore, in the automatic fire extinguishing apparatus starting method according to the present invention, the electric resistance value of the oil absorbing wall 2, the heat of vaporization generated from the oil absorbing wall 2, and the liquid inflow side of the oil absorbing wall 2 accumulated as described above. The liquid amount is measured or sensed at the same time, and for example, when the liquid amount reaches a predetermined value and the electric resistance value reaches a predetermined value or heat of vaporization is detected, a detection signal to be sent to the automatic fire extinguisher 1 is generated. You can do it.

The oil absorbing wall 2 may be one that blocks the liquid inflow path and absorbs the flammable liquid.

[Effect of the invention] According to claim 1, since the automatic fire extinguishing device can be activated when the possibility of a fire occurs, it is possible to prevent the fire from occurring and to prevent the burnout thereof. Has the effect.

According to claim 2, the automatic fire extinguisher can be activated only by the inflow of the flammable liquid.

According to the third aspect, the automatic fire extinguisher can be activated stepwise according to the inflow amount of the flammable liquid.

[Brief description of drawings]

FIG. 1 is a block diagram of an apparatus for carrying out the method of the invention, and FIG. 2 is an enlarged vertical sectional view of an oil absorbing wall. A: Liquid inflow path 1 ... Automatic fire extinguisher 2 ... Oil absorbing wall 3 ... Resistance measuring device 4 ... Liquid level sensor

Claims (3)

[Claims] 1. An oil absorbing wall for blocking the flow is provided in a liquid inflow passage, and the flammable liquid accumulated in the wall of the oil absorbing wall and / or the flammable liquid absorbed in the oil absorbing wall is absorbed. A method for starting an automatic fire extinguisher, comprising detecting and starting the automatic fire extinguisher before a fire occurs based on the detection result. 2. The automatic fire extinguisher starting method according to claim 1, wherein the flammable liquid absorbed by the oil absorbing wall is detected by detecting the heat of vaporization. 3. The method for starting an automatic fire extinguisher according to claim 1, wherein the flammable liquid absorbed in the absorbing wall is detected by measuring the electric resistance value of the oil absorbing wall.