JP4066006B2 - Fire extinguishing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire extinguishing equipment including a water discharge head and a sensing head.
[0002]
[Prior art]
Conventional fire extinguishing equipment includes a normally open simultaneous opening valve, a sensing pipe connected to the opening valve and to which a sensing head is attached, a secondary side of the opening valve, and a water discharge head. And a water discharge pipe to which is attached.
[0003]
In this fire extinguishing equipment, when the sensing head operates, the simultaneous release valve opens and the water discharge head discharges water. When a closed sprinkler head is used for this water discharge head, both the detection head and the water discharge head are Since the water is not discharged unless it operates, this equipment can prevent the occurrence of water loss due to the expulsion of the head.
[0004]
[Problems to be solved by the invention]
The conventional example has the following problems.
(1) Since the water discharge pipe is an empty pipe, that is, a dry pipe, even if an external impact force is applied to the water discharge head or the like, it is not known.
(2) Even if the simultaneous release valve is opened, it takes time to fill up the water discharge pipe. Therefore, initial fire extinguishment becomes difficult, and water discharge is performed to compensate for the initial fire extinguishing.
[0005]
In view of the above circumstances, an object of the present invention is to make it possible to perform initial fire extinguishing, to reduce water loss, and to recognize damage to a water discharge head or the like.
[0006]
[Means for Solving the Problems]
Means for solving the above problems are as follows.
[0007]
The present invention relates to a normally open simultaneous opening valve, a sensing pipe connected to the simultaneous opening valve and provided with a sensing head, connected to a secondary side of the simultaneous opening valve, and a water discharge head. A water discharge pipe, wherein the water discharge head is a closed sprinkler head, and a primary side and a secondary side of the simultaneous release valve are connected via a bypass pipe. The bypass pipe is provided with a water flow detecting means and a normally open on-off valve, and a control means for closing the on-off valve when the water flow detecting means is operated is provided .
[0008]
According to the present invention , the first flowing water detection means is provided on the upstream side of the closed sprinkler head attached to the filled water discharge pipe, and the open / close valve that is always open is provided on the primary side of the flowing water detection means. A sensing pipe to which a sensing head is attached is connected between the on-off valve and the first flowing water detection means, and the second flowing water detection means is provided in the sensing pipe, and the second flowing water Control means is provided for maintaining the opening of the on-off valve when the detecting means is operated, and closing the on-off valve when only the first flowing water detecting means is operated .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present inventor makes the above-mentioned problem by using a flowing water detection means and a control panel to which a flowing water detection signal of the flowing water detection means is input while making the drainage pipe a constantly filled water pipe. As a result of repeated research considering that it can be solved, it was found that the following should be done.
[0010]
That is, a wet water discharge pipe with a closed water discharge head is connected to the secondary side of the normally open simultaneous release valve, the primary side and the secondary side of the simultaneous open valve are communicated via a bypass pipe, The bypass pipe is provided with running water detection means and an opening / closing valve that closes when the running water detection means detects the running water, and a sensing pipe with a sensing head is connected to the simultaneous opening valve.
[0011]
In addition, a water discharge pipe with a closed water discharge head is connected to the secondary side of the normally open on-off valve, and a detection pipe with a detection head is provided at the base end coupling portion of the water discharge pipe. A second running water detection means is provided on the upstream side of the sensing head of the pipe, a first running water detection means is provided between the proximal end connecting portion of the draining pipe and the drainage head, and the first and second running water detection means An on-off valve control panel to which a running water detection signal is input is provided.
[0012]
【Example】
A first embodiment of the present invention will be described with reference to FIG.
A water flow detector 3 and a water supply facility P such as a pump are connected to the water supply pipe 2 on the primary side of the normally open simultaneous opening valve 1.
[0013]
A water discharge pipe 4 is connected to the secondary side of the release valve 1. The water discharge pipe 4 is provided with a header 5, and the connection port 5 a of the header 5 is connected to a closed sprinkler head 7, that is, a water discharge head via a flexible resin pipe 6. Since all the connection ports 5a face upward, it is difficult for fire extinguishing water to come out as compared to the horizontal or downward connection ports. Therefore, even if the water discharge head 7 is opened due to an accident, the amount of water flowing is small, so that the water loss is small.
The head 7 is designed to operate at 72 ° C., for example.
[0014]
The primary side and the secondary side of the simultaneous release valve 1 communicate with each other via a bypass pipe 10.
The bypass pipe 10 is provided with first flowing water detection means, for example, a flowing water detection valve 11, and a normally open on-off valve 12 is disposed upstream thereof.
[0015]
A sensing pipe 15 with a sensing head 14 is connected to the simultaneous opening valve 1. The sensing head 14 is designed to operate at a lower temperature than the water discharge head, for example, at 65 ° C. The flowing water detection device 3, the flowing water detection valve 11, and the on-off valve 12 are connected to a control panel 18. When the flowing water detection signal is input from the flowing water detection valve 11, the control panel 18 controls the on-off valve 12 to be closed.
[0016]
Next, the operation of the present embodiment will be described. In the case of a fire, the case where the water discharge head is damaged and the case where the sensing head 14 is damaged will be described separately.
[0017]
In the case of a fire, when the sensing head 14 detects a fire and is opened, fire-extinguishing water in the sensing pipe 15 flows out. Then, the simultaneous release valve 1 is opened, the running water detection device 3 is operated, and the water supply facility P such as a pump is activated.
[0018]
When the water discharge head 7 operates in this state, the fire extinguishing water in the water discharge pipe 4 flows out immediately. As a result, water flows through the bypass pipe 10 and the flowing water detection valve 11 operates, and when the flowing water detection signal is input to the control panel 18, the control panel 18 closes the on-off valve 12. In this state, water for fire extinguishing is supplied from the water supply facility P such as a pump to the water discharge pipe 4 through the simultaneous release valve 1, and water discharge is continuously performed from the water discharge head 7.
[0019]
When the water discharge head is damaged, if the water discharge head 7 is damaged due to an external impact force or the like, the water discharge head 7 is opened, and the fire extinguishing water in the water discharge pipe 4 flows out.
Thus, since water is supplied from the water supply pipe 2 to the water discharge pipe 4 through the bypass pipe 10, when the flowing water detection valve 11 is operated and the flowing water detection signal is input to the control panel 18, the control panel 18 Since the on-off valve 12 is closed, the bypass pipe 10 is closed.
At this time, since the release valve 1 is closed, fire-fighting water is not supplied to the water discharge pipe 4. Thus, in other words, the control panel 18 determines that the water discharge head 7 is abnormal when there is a signal from the water flow detection valve 11 but no signal from the water flow detection device 3.
[0020]
When the sensing head is damaged, the sensing head 14 is damaged by an external impact force or the like, and when the sensing head 14 is opened, fire-extinguishing water in the sensing pipe 15 flows out. When the pressure in the sensing pipe 15 decreases, the simultaneous release valve 1 is opened and the flowing water detection device 3 operates.
However, since the water discharge pipe 4 is filled with water and the water discharge head 7 is not operating, the water flow detection valve 11 does not operate, and therefore the control panel 18 has a water flow detection signal from the water flow detection valve 11. Is not entered. As a result, the control panel 18 determines that the sensing head 14 is abnormal. Note that there is an orifice in the simultaneous release valve 1, and the water supplied to the sensing pipe 15 is restricted by this orifice, so that the outflow of water from the sensing head 14 is very small. When the control panel 18 determines that the water discharge head 7 or the sensing head 14 is abnormal, a display device (not shown) displays that water is flowing out due to damage to the water discharge head 7 or damage to the detection head 14.
Further, an abnormal signal may be transferred to a fire receiver or the like. As a result, the manager can quickly take countermeasures such as closing the water stop valve.
[0021]
A second embodiment of the present invention will be described with reference to FIG.
The water supply pipe 2 on the primary side of the normally open on-off valve 21 is connected to a water flow detection device 3 and a water supply facility P such as a pump.
[0022]
A water discharge pipe 24 is connected to the secondary side of the on-off valve 21. The water discharge pipe 24 is provided with a header 25, and a closed sprinkler head, that is, a water discharge head 7 is connected to a connection port 5 a of the header 5 through a flexible resin pipe 6. Since all the connection ports 5a face upward, it is difficult for fire extinguishing water to come out as compared to the horizontal or downward connection ports. Therefore, even if the water discharge head 7 is opened due to an accident, the amount of water flowing is small, so that the water loss is small.
[0023]
A sensing pipe 25 with a sensing head 14 is connected to the proximal end coupling portion 30 of the water discharge pipe 24. The sensing head 14 is designed to operate at a lower temperature than the water discharge head 7, for example, to operate at 65 ° C.
[0024]
On the upstream side of the sensing head 14, flowing water detection means, for example, a second flowing water detection valve 32, an orifice 33, and a check valve 35 are sequentially provided.
[0025]
Between the proximal end connecting portion 30 of the water discharge pipe 24 and the header 5 closest to the proximal end connecting portion 30, a check valve 36 and a running water detection means, for example, a first running water detection valve 42 are provided. .
[0026]
The first flowing water detection valve 42, the second flowing water detection valve 32 and the flowing water detection device 3 are connected to the on-off valve control panel 28. The on-off valve control panel 28 maintains the open state of the on-off valve 21 when the flowing water detection signal is input from the second flowing water detection valve 32, and the flowing water detection signal is input only from the first flowing water detection valve 42. When it is, control is performed so that the on-off valve 21 is closed.
The control panel 28 does not perform any control when no running water signal is input.
[0027]
Next, the operation of the present embodiment will be described. In the case of a fire, the case where the water discharge head is damaged and the case where the sensing head 14 is damaged will be described separately.
[0028]
In the case of a fire, when the sensing head 14 detects a fire and is opened, fire-extinguishing water in the sensing pipe 25 flows out. Thereby, while the 2nd flowing water detection valve 32 operate | moves, the flowing water detection apparatus 3 also operate | moves and the water supply equipment P, such as a pump, is started.
[0029]
When the water discharge head 7 operates in this state, the fire extinguishing water in the water discharge pipe 24 flows out immediately. As a result, the first flowing water detection valve 42 operates and outputs a flowing water detection signal to the control panel 28. At this time, since the on-off valve 21 is maintained in the open state, fire-fighting water is continuously discharged from the water discharge head 7. In addition, since the orifice 33 is provided on the proximal end side of the sensing pipe 25, the fire-extinguishing water is hardly discharged from the sensing head 14 in the event of a fire.
[0030]
When the water discharge head 7 is damaged, when the water discharge head 7 is damaged due to an external impact force or the like, the water discharge head 7 is opened and the fire extinguishing water in the water discharge pipe 24 flows out.
[0031]
At this time, the first flowing water detection valve 42 operates and outputs a flowing water detection signal to the control panel 28, but the second flowing water detection valve 32 does not operate and therefore does not output the flowing water detection signal. Since the control panel 28 closes the on-off valve 21, the water discharge from the water discharge head 7 is stopped and water loss is prevented. When the running water detection signal from the second running water detection valve 32 is not input, the control panel 28 determines that the water discharge head 7 is abnormal.
[0032]
At this time, the amount of water flowing from the damaged sensing head 14 is limited by the orifice, so that water loss is prevented.
[0033]
When the sensing head 14 is damaged When the sensing head 14 is damaged due to an external impact force or the like, the sensing head 14 is opened, and fire-extinguishing water in the sensing pipe 25 flows out.
[0034]
As a result, the second flowing water detection valve 32 operates to send a flowing water detection signal to the control panel 28, and water is supplied from the on-off valve 21 as the pressure in the sensing pipe 25 decreases, so the flowing water detection device 3 operates. A flowing water detection signal is sent to the control panel 28.
On the other hand, when the running water detection signal from the first running water detection valve 42 is not input, the control panel 28 determines that the sensing head 14 is abnormal.
When the control panel 28 determines that the water discharge head 7 or the sensing head 14 is abnormal, it displays on the display device (not shown) that water has flowed out due to damage to the water discharge head 7 or sensor head 14.
Moreover, you may make it transfer abnormal signals, such as a fire receiver. As a result, the manager can quickly take countermeasures such as closing the water stop valve.
[0035]
【The invention's effect】
Since this invention was comprised as mentioned above, the inside of the water discharge pipe is always filled up.
Therefore, water can be discharged simultaneously with the opening of the water discharge head, so that initial fire extinguishing is possible. Further, it is possible to determine whether the water discharge head or the sensing head is damaged based on the flowing water detection signal input to the control panel.
Furthermore, there is little water loss to reduce water discharge except during a fire.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of the present invention.
FIG. 2 is a diagram showing a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Simultaneous open valve 3 Flowing water detection apparatus 4 Water discharge pipe 7 Water discharge head 10 Bypass pipe 11 Flow water detection valve 12 On-off valve 14 Sensing head 15 Sensing pipe

Claims (2)

A normally open simultaneous opening valve, a sensing pipe connected to the simultaneous opening valve and provided with a sensing head, connected to a secondary side of the simultaneous opening valve, and provided with a water discharge head A water discharge pipe, wherein the water discharge head comprises a closed sprinkler head, and the primary side and the secondary side of the simultaneous release valve communicate with each other via a bypass pipe The fire extinguishing equipment is characterized in that the bypass pipe is provided with a running water detection means and a normally open on-off valve, and a control means for closing the on-off valve when the running water detection means is activated . A first flowing water detection means is provided upstream of a closed sprinkler head attached to a filled water discharge pipe , and an open / close valve that is always open is provided on the primary side of the flowing water detection means. A sensing pipe to which a sensing head is attached is connected between the valve and the first running water detection means, the second running water detection means is provided in the sensing pipe, and the second running water detection means operates. was the time, keeping the opening of the on-off valve, wherein when only has operated the first water flow detection means, fire extinguishing equipment, wherein the control means closing the on-off valve is provided.

Images