JP5770583B2 - Sprinkler fire extinguishing equipment - Google Patents

Description

  The present invention relates to a pre-actuated sprinkler fire extinguishing facility.

A general sprinkler fire extinguishing facility is a facility that starts water discharge when a closed sprinkler head is activated.
On the other hand, the pre-actuated sprinkler fire extinguishing equipment is equipment that starts water discharge when both the fire detector and the closed sprinkler head are activated, and is highly reliable with respect to water damage due to breakage or malfunction. In pre-actuated sprinkler fire extinguishing equipment, the secondary side pipe connected to the secondary side of the alarm valve is filled with compressed air, etc., and the pressure is monitored to detect leakage of the secondary side pipe and the closed sprinkler head. Check for damage.

However, in pre-actuated sprinkler fire extinguishing equipment, the alarm valve is opened when the fire detector is activated. For this reason, the alarm valve opens even when the fire detector malfunctions due to a cause other than a fire. If there is no fire, the closed sprinkler head will not open and water damage will not occur, but water will flow into the secondary pipe.
In such a case, it is necessary to drain the water that has flowed into the secondary side pipe, and when the closed sprinkler head is a downward head, it is necessary to drain the water accumulated in the falling pipe. This is not possible unless you remove it. The water accumulated in the falling pipe promotes corrosion of the pipe, and water is discharged even if it is a small amount when it is damaged by hitting the closed sprinkler head.

In order to solve these problems, a method of opening the alarm valve by two signals of the operation of the fire detector and the decrease in the pressure in the secondary side pipe of the alarm valve due to the operation of the closed sprinkler head (hereinafter referred to as the method) Called double action type).
FIG. 4 is an explanatory diagram of a conventional double action type. In the case of the double action type, in the event of a fire, a quick exhaust valve is provided on the secondary side pipe to detect a drop in the pressure on the secondary side as soon as possible after the closed type sprinkler head is activated, and the closed type sprinkler head is activated. At that time, the quick exhaust valve is opened to discharge the gas or liquid filled in the secondary side pipe.
The double action type controls differently from the normal pre-actuated sprinkler fire extinguishing equipment (hereinafter referred to as the normal type), so if you use the double action type and the normal type together, prepare two types of control panels, However, there is a problem that the control panel needs to be modified when changing from the normal type to the double action type.
JP-A-7-204290

  The present invention has been made to solve such a problem, and provides a pre-actuated sprinkler fire extinguishing equipment that allows a normal type and a double action type to be controlled by the same control panel, a normal type and a double action type. It is an object of the present invention to provide a pre-acting sprinkler fire extinguishing equipment that can use a common control panel even when it is used in a building, and does not need to change the control panel even when changing from a normal type to a double action type.

Sprinkler fire extinguishing facility according to the present invention, first two-to the first activation valve to open the first alarm valve, the first connected to the secondary side of the alarm valve gas or liquid is filled under pressure and the next pipe, said first first closed sprinkler head attached to the secondary pipe, a first fire detector transmits a signal by detecting a physical quantity based on a fire phenomenon, the first When the pressure within the secondary side piping is less than or equal to the specified pressure and a first pressure switch closing the contacts, a first sprinkler fire extinguishing facility and a third activation valve to open the third alarm valve, wherein A third secondary pipe connected to the secondary side of the third alarm valve and pressurized and filled with gas or liquid; a third closed sprinkler head attached to the third secondary pipe; A third fire sensation that detects a physical quantity based on a fire phenomenon and transmits a signal A signal to open the first start valve is transmitted to the first start valve control signal line upon receipt of the signal transmitted by the first fire detector. A control panel for transmitting a signal for opening the third start valve to a third start valve control signal line when receiving the signal transmitted by the third fire detector, the first start valve control signal A line connected to the first start valve via the first pressure switch, a third start valve control signal line connected directly to the third start valve, and the first sprinkler fire extinguishing equipment Opens the first alarm valve and opens the first alarm valve by closing the contact point of the signal transmitted from the first fire detector and the first pressure switch, and the third alarm valve. The sprinkler fire extinguishing equipment uses the signal sent by the third fire detector. It opens the serial third activation valve opening the third alarm valve, and characterized that you control and said third sprinkler fire extinguishing equipment and the first sprinkler fire extinguishing equipment with a common said control panel To do.

Further, sprinkler fire extinguishing facility according to the present invention, the second to a second activation valve to open the second alarm valve, the second is connected to the secondary side of the alarm valve gas or liquid is filled under pressure and the secondary side piping, and the second second closed sprinkler head attached to the secondary pipe, a second fire detector transmits a signal by detecting a physical quantity based on a fire phenomenon, before Symbol branched from the second secondary pipe, a quick exhaust valve for discharging the gas or liquid to the outside of the second secondary pipe is connected to the secondary side of the quick exhaust valve, the quick exhaust a second sprinkler fire extinguishing installation comprising the pressure of the gas or liquid valve is discharged becomes equal to or higher than the set pressure and the second pressure switch closing the contacts, and a third activation valve to open the third alarm valve Connected to the secondary side of the third alarm valve, pressurized gas or liquid A third secondary side pipe to be filled, a third closed sprinkler head attached to the third secondary side pipe, and a third fire detection for detecting a physical quantity based on a fire phenomenon and transmitting a signal A signal to open the second start valve is transmitted to a second start valve control signal line upon receipt of a signal transmitted by the second fire detector. A control panel for transmitting a signal for opening the third start valve to a third start valve control signal line upon receipt of a signal transmitted by the third fire detector, the second start valve control signal The line is connected to the second start valve via the second pressure switch, the third start valve control signal line is directly connected to the third start valve, and the second sprinkler fire extinguishing equipment Is the signal transmitted by the second fire detector and the second pressure. When the switch closes the contact, the second start valve is opened and the second alarm valve is opened, and the third sprinkler fire extinguishing equipment is activated by the signal transmitted from the third fire sensor. 3 to open the boot valve opening the third alarm valve, which is characterized that you control and said third sprinkler fire extinguishing equipment and the second sprinkler fire extinguishing equipment with a common said control panel It is.

In the present invention, a signal for opening the start valve in response to the operation of the fire detector is usually transmitted to the start valve via a pressure switch that monitors a decrease in the pressure in the secondary pipe of the alarm valve. It can be controlled by the control panel used for the mold. This allows common control between the double action type that opens the start valve based on the two signals of fire detector activation and secondary pipe pressure drop, and the normal type that opens the alarm valve when the fire detector operates. It can be used together on the board or renewed without changing the control board from the normal type to the double action type.

Further, in the present invention, a signal for opening the start valve in response to the operation of the fire detector is sent via a pressure switch for monitoring the pressure rise on the secondary side of the quick exhaust valve connected to the secondary side pipe of the alarm valve. By transmitting to the start valve, the control panel used for the normal type can be controlled. As a result, the double action type that opens the alarm valve by two signals of the operation of the fire detector and the pressure increase on the secondary side of the quick exhaust valve and the normal type that opens the alarm valve by the operation of the fire detector are common. It can be used together with the control panel or renewed without changing the control panel from the normal type to the double action type.

It is explanatory drawing of the pre-operation type sprinkler fire extinguishing equipment which concerns on Embodiment 1 of this invention. It is explanatory drawing of the pre-acting type sprinkler fire extinguishing equipment which concerns on Embodiment 2 of this invention. It is sectional drawing of the quick exhaust valve used for Embodiment 2 of this invention. It is explanatory drawing of the conventional double action type pre-acting type sprinkler fire extinguishing equipment.

Embodiment 1
FIG. 1 is an explanatory diagram of a pre-acting sprinkler fire extinguishing facility according to Embodiment 1 of the present invention. In FIG. 1, a case where a double action type is used connected to a control panel will be described as an example.
The sprinkler fire extinguishing equipment according to the first embodiment includes an alarm valve 1, an activation valve 2 that opens the alarm valve 1, and a manual activation valve 13.
A primary side pipe 16 is connected to the primary side of the alarm valve 1, and the primary side pipe 16 is connected to a fire pump and a fire water tank (not shown).
A secondary side pipe 3 is connected to the secondary side of the alarm valve 1, and a closed sprinkler head (not shown) is provided on the secondary side pipe 3, and is installed on the ceiling surface or the like of the warning area. A terminal test valve (not shown) is provided at the terminal of the secondary side pipe 3. Further, a secondary side pressure drop monitoring pressure switch 7 is connected to the secondary side pipe 3, and a pressure drop signal is transmitted when the pressure in the secondary side pipe 3 becomes equal to or lower than a set pressure.

A fire detector (not shown) is installed on the ceiling surface or the like of the monitoring area and is electrically connected to a fire receiver (not shown). The fire receiver is electrically connected to the fire extinguishing equipment control panel 6 through a fire signal line 17. The fire extinguishing equipment control panel 6 is electrically connected to the secondary side pressure drop monitoring pressure switch 7 via a start valve control signal line 18 (primary side of the secondary side pressure drop monitoring pressure switch 7). The pressure switch 7 for monitoring the secondary side pressure drop always has two open contacts, and the secondary side pressure drop signal line 19 is connected to the first contact (not shown), so that the pressure in the secondary side pipe 3 is increased. Is used to display on the fire extinguishing equipment control panel 6. A second contact (not shown) is connected to the start valve 2 via a start valve control signal line 18 (secondary side of the pressure switch 7 for monitoring the secondary side pressure drop). When the second contact is closed, the fire extinguishing equipment control panel 6 and the start valve 2 are electrically connected by the start valve control signal line 18.
In the first embodiment, the first contact is set to be closed when the pressure in the secondary side pipe 3 becomes equal to or lower than the set pressure. However, the first contact is always closed and is in the secondary side pipe 3. It is good also as a setting which opens when the pressure of becomes below a setting pressure.

The alarm valve 1 includes a piston chamber 22, a piston 23, a valve seat 24, an alarm valve opening pipe 25, an alarm valve closing pipe 26, and the like. The alarm valve opening pipe 25 and the alarm valve closing pipe 26 are each connected to the piston chamber 22.
The alarm valve opening pipe 25 is connected to the piston chamber 22 at the base end side, and once branched into two paths on the secondary side thereof, the start valve 2 is provided in the first path, and the manual start valve 13 is provided in the second path. Are connected and merge into one path on the secondary side of the start valve 2 and the manual start valve 13. The alarm valve opening pipe 25 joined to one is connected to the drain pipe 15.
The alarm valve closing pipe 26 is connected to the piston chamber 22 via the primary side pipe 16, the alarm valve closing orifice 11 and the check valve 12.

In the alarm valve 1, when pressurized water is introduced from the alarm valve closing pipe 26 with the start valve 2 and the manual start valve 13 being closed, the piston chamber 22 is filled with the pressurized water, and the piston 23 is driven by the water pressure and the urging force of the spring 27. Is pressed against the valve seat 24 and closed.
Further, when the alarm valve 1 opens the start valve 2 or the manual start valve 13 from the closed state, the pressure in the piston chamber 22 decreases. That is, pressurized water is sent from the primary side pipe 16 through the alarm valve closing pipe 26 to the piston chamber 22, but the hole diameter of the alarm valve closing orifice 11 is smaller than the pipe inner diameter of the alarm valve opening pipe 25, and the drainage amount of the piston chamber 22 is small. Since the amount of water is greater than the amount of water, the water pressure in the piston chamber 22 decreases. Therefore, the alarm valve 1 is opened when the piston 23 is pushed by the pressure of the primary side pipe 16, and the primary side pipe 16 and the secondary side pipe 3 communicate with each other.

The operation of the first embodiment configured as described above will be described separately for monitoring, fire, and malfunction.
<When monitoring>
At the time of monitoring, the alarm valve 1 is closed, and the secondary pipe 3 is pressurized and filled with a gas such as air at a predetermined pressure (for example, 0.2 MPa).
Further, at the time of monitoring, a liquid extinguishing agent such as water is pressurized and filled in the primary side pipe 16 at a predetermined pressure (for example, 1 MPa).

<In case of fire>
When a fire occurs, the fire detector is generally activated prior to the closed sprinkler head. When the fire detector is activated, a fire signal is transmitted from the fire receiver through the fire signal line 17 to the fire extinguishing equipment control panel 6.
When the fire extinguishing equipment control panel 6 receives the fire signal, it transmits a start valve open signal to the start valve control signal line 18, but the second contact is opened because the pressure switch 7 for monitoring the secondary side pressure drop is not activated. Therefore, the start valve opening signal is not transmitted to the start valve 2.

  When the closed sprinkler head continues to open, the air in the secondary side pipe 3 is released, and the pressure in the secondary side pipe 3 decreases. When the pressure in the secondary side pipe 3 becomes equal to or lower than the set pressure, the secondary side pressure drop monitoring pressure switch 7 is actuated, and the first contact and the second contact are closed. When the first contact is closed, the secondary side pressure drop signal line 19 is connected to the fire extinguishing equipment control panel 6, and the fire extinguishing equipment control board 6 displays that the pressure in the secondary side pipe is lowered. Further, when the second contact is closed, the primary side and secondary side startup valve control signal line 18 of the second contact is electrically connected, so that the startup valve opening signal is transmitted to the startup valve 2. .

  Upon receiving the start valve open signal, the start valve 2 is opened, the water in the piston chamber 22 of the alarm valve 1 is drained, and the alarm valve 1 is opened. When the alarm valve 1 is opened, the primary side pipe 16 and the secondary side pipe 3 communicate with each other, the pressurized water flows into the secondary side pipe 3 and is discharged from the closed sprinkler head.

<In case of malfunction>
When the fire detector is a smoke detector, for example, when the fire detector determines that a large amount of cigarette smoke is a fire, the fire receiver that has received the fire signal from the fire detector passes through the fire signal line 17. A fire signal is transmitted to the fire extinguishing equipment control panel 6. The fire extinguishing equipment control panel 6 that has received the fire signal transmits a start valve open signal to the start valve control signal line 18, but the second contact is opened because the secondary side pressure drop monitoring pressure switch 7 is not activated. Therefore, the start valve opening signal is not transmitted to the start valve 2.

  Since the closed sprinkler head does not operate at the level of cigarette fire, the pressure in the secondary side pipe 3 does not decrease, and the pressure switch 7 for monitoring the secondary side pressure decrease does not operate even if time elapses. For this reason, the alarm valve 1 is not opened, and water does not flow into the secondary side pipe 3, and it is only necessary to restore the fire receiver and the fire extinguishing equipment control panel 6 after discharging the smoke. It is not necessary to drain water in the pipe 3.

Further, when the closed sprinkler head is damaged due to impact such as hitting a load, the pressurized air in the secondary side pipe 3 is released and the secondary side pressure drop monitoring pressure switch 7 is actuated to operate the first contact. And the second contact closes. Since the first contact is closed, the fire extinguishing equipment control panel 6 displays that the pressure in the secondary side pipe 3 is decreasing.

  At this time, no fire signal is transmitted because there is no cause for the fire detector to operate. Accordingly, the start valve opening signal is not transmitted from the fire extinguishing equipment control panel 6, and the alarm valve 1 is not opened, so that water does not flow into the secondary side pipe 3. For this reason, after exchanging the closed sprinkler head, it is only necessary to fill the secondary side pipe 3 with pressurized air and restore the fire extinguishing equipment control panel 6, and the water draining operation in the secondary side pipe 3 is not necessary.

When the double action type and the normal type are used together in a common control panel, a plurality of start valve control signal lines 18 corresponding to the quantity of the valves 1 are provided, and two start valve control signal lines 18 connected to the normal type are provided. What is necessary is just to connect directly to the starting valve 2 without going through the pressure switch 7 for monitoring the pressure drop on the secondary side.
Further, when changing from the normal type to the double action type, the start valve control signal line 18 that directly connected the control panel 6 and the start valve 2 is connected to the second contact of the pressure switch 7 for monitoring the secondary side pressure drop. It is sufficient to connect so as to go through.

  Further, even if the quick exhaust valve 8 described in the second embodiment to be described later is connected to the secondary side pipe 3 of the first embodiment (or a portion that is always in communication with the secondary side pipe 3 of the alarm valve 1). Good. In this case, after the closed sprinkler head is activated, the pressurized air in the secondary side pipe 3 is released earlier, so that the start of water discharge from the closed sprinkler head can be accelerated.

Embodiment 2
FIG. 2 is an explanatory diagram of a sprinkler fire extinguishing facility according to Embodiment 2 of the present invention.
Here, differences from the first embodiment will be described.
The second embodiment is different from the first embodiment in that a rapid exhaust valve 8 and a rapid exhaust valve operation detection pressure switch 9 are installed in place of the secondary pressure drop monitoring pressure switch 7. is there. By using the quick exhaust valve 8, the air in the secondary side pipe 3 can be extracted more quickly, so that the time from when the closed sprinkler head is activated until the start of water discharge can be shortened.

  A quick exhaust valve 8 is connected to the secondary side pipe 3 (or a portion that always communicates with the secondary side pipe 3 of the alarm valve 1), and an exhaust control orifice 10 is connected to the secondary side of the quick exhaust valve 8. The secondary side of the exhaust control orifice 10 is open to the atmosphere. The hole diameter of the exhaust control orifice 10 is set so that the exhaust amount is smaller than the exhaust amount of the quick exhaust valve 8. Between the rapid exhaust valve 8 and the exhaust control orifice 10, a rapid exhaust valve operation detection pressure switch 9 is installed, and a pressure increase due to air exhausted from the rapid exhaust valve 8 is set pressure (for example, 0.05 MPa or more). ), A quick exhaust valve activation signal is transmitted. Since it is faster to detect the pressure rise in the quick exhaust valve secondary side pipe 14 than to detect the pressure drop in the secondary side pipe 3, it takes time to open the start valve 2 after the closed sprinkler head is activated. Can be fast.

The rapid exhaust valve actuation detection pressure switch 9 normally has two contacts that are open, and a rapid exhaust valve actuation signal line 20 is connected to the first contact (not shown). This is used to display on the fire extinguishing equipment control panel 6 that the air whose pressure has been exhausted stays with the exhaust control orifice 10 to increase the pressure, that is, that the quick exhaust valve 8 is opened. Yes. The second contact (not shown) has its primary side connected to the fire extinguishing equipment control panel 6 via the primary side start valve control signal line 18, and its secondary side is started via the secondary side start valve control signal line 18. Connected to valve 2. When the second contact is closed, the fire extinguishing equipment control panel 6 and the start valve 2 are electrically connected by the start valve control signal line 18.
In the second embodiment, the first contact is set to close when the exhaust pressure from the quick exhaust valve 8 becomes equal to or higher than the set pressure. It may be set to open when the exhaust pressure becomes equal to or higher than the set pressure.

  The quick exhaust valve 8 will be described with reference to FIG. The quick exhaust valve 8 is filled with oil 808 between an upper frame 806 and a lower frame 807 and sealed to form an oil chamber 811. A disk 802 is installed in the oil chamber 811 so as to separate the upper oil chamber 812 and the lower oil chamber 813, and the oil orifice 803, which is a small hole communicating the upper oil chamber 812 and the lower oil chamber 813, is provided in the disk 802. Has been opened. The disk 802 is connected to the valve body 801 by a guide rod 814.

  A flam chamber 816 is formed on the lower side of the lower fram 807 and communicates with the secondary side pipe connection portion 809, and the flam chamber 816 and the valve body chamber 815 communicate with each other. The valve body 801 is in the valve body chamber 815, and allows the valve body chamber 815 and the exhaust part 810 to communicate with each other or to be shut off. A pressure switch 9 for rapid exhaust valve operation detection and an exhaust control orifice 10 are connected to the secondary side of the exhaust unit 810 and are opened to the atmosphere.

  In the monitoring state, the quick exhaust valve 8 pushes up the lower fram 807 by the pressure of the air filled in the secondary pipe 3 from the secondary pipe connection 809 to the fram chamber 816 and compresses the starting spring 804. At this time, the valve body 801 is closed so as to be pressed against the recovery spring 805.

  When the closed sprinkler head is operated and the pressure in the secondary side pipe 3 is reduced, the force pushing up the lower fram 807 is reduced, the compressed starting spring 804 is extended, and the upper fram 806 is pushed down. At this time, the oil 808 in the upper oil chamber 812 moves to the lower oil chamber 813 through the oil orifice 803, but because the resistance of the oil 808 passing through the oil orifice 803 is large, the disk 802 is pushed down, and the valve is guided by the guide rod 814. The body 801 is opened. When the valve body 801 is opened, the air filled in the secondary side pipe 3 is exhausted through the secondary side pipe connection part 809, the fram chamber 816, the valve body room 815, and the exhaust part 810 in this order.

  On the other hand, when the pressure of the air in the secondary side pipe 3 is slowly lowered due to a temperature change or the like, the resistance when the oil 808 passes through the oil orifice 803 is small, so that the oil 808 is not moved and the oil 808 is not moved. It moves through 803 to the lower oil chamber 813. In this case, the extension of the starting spring 804 is offset by the extension of the lower frame 807. Since the disk 802 does not move, the valve body 801 is not opened and the air in the secondary side pipe 3 is not discharged.

  The operation of the second embodiment configured as described above will be described separately at the time of fire and at the time of malfunction. Note that differences from the first embodiment will be described. In addition, the monitoring operation is the same as that of the first embodiment, and is therefore omitted.

<In case of fire>
When a fire occurs and the fire detector is activated, a start valve opening signal is transmitted from the fire extinguishing equipment control panel 6 to the start valve control signal line 18, but the pressure switch 9 for detecting the rapid exhaust valve operation is not activated. Since the contact 2 is open, the start valve open signal is not transmitted to the start valve 2.

  When the closed sprinkler head continues to open, the air in the secondary side pipe 3 is released, and the pressure in the secondary side pipe 3 decreases. Upon detecting this, the quick exhaust valve 8 is opened, and the air in the secondary side pipe 3 is exhausted earlier. The air exhausted by the quick exhaust valve 8 is retained by the exhaust control orifice 10 between the quick exhaust valve 8 of the quick exhaust valve secondary pipe 14 and the exhaust control orifice 10, and the pressure during this time increases. When this pressure becomes equal to or higher than the set pressure of the rapid exhaust valve actuation detection pressure switch 9, the rapid exhaust valve actuation detection pressure switch 9 is activated, and the first contact and the second contact are closed. When the first contact is closed, the quick exhaust valve actuation signal line 20 is connected to the fire extinguishing equipment control panel 6, and the fire extinguishing equipment control panel 6 indicates that the quick exhaust valve 8 is open. Moreover, since the start valve control signal line 18 on the primary side and the secondary side of the second contact is electrically connected by closing the second contact, the start valve opening signal is transmitted to the start valve 2, The alarm valve 1 is opened and water is discharged from the closed sprinkler head.

<In case of malfunction>
When the fire detector transmits a non-fire report, the fire extinguishing equipment control panel 6 that has received the fire signal transmits a start valve open signal to the start valve control signal line 18, but the pressure switch 9 for rapid exhaust valve operation detection is Since the second contact is open because it is not operating, the start valve open signal is not transmitted to the start valve 2.

At this time, the closed sprinkler head does not operate, so the pressure in the secondary side pipe 3 does not drop and the quick exhaust valve 8 does not open. For this reason, the rapid exhaust valve operation detection pressure switch 9 does not operate even if time elapses. For this reason, the alarm valve 1 is not opened, and water does not flow into the secondary side pipe 3.

Further, when the closed sprinkler head is damaged by impact or the like, the pressurized air in the secondary side pipe 3 is released, the quick exhaust valve 8 is opened, and the quick exhaust valve operation detection pressure switch 9 is actuated. And the second contact are closed. Since the first contact is closed, the fire extinguishing equipment control panel 6 displays that the quick exhaust valve 8 has been opened.

At this time, since the fire detector does not operate, no fire signal is transmitted, and no start valve opening signal is transmitted from the fire extinguishing equipment control panel 6. For this reason, the alarm valve 1 is not opened, and water does not flow into the secondary side pipe 3.

When the double action type and the normal type are used together in a common control panel, a plurality of activation valve control signal lines 18 corresponding to the quantity of the valves 1 are provided, and the activation valve control signal lines 18 connected to the normal type are rapidly provided. What is necessary is just to connect directly to the starting valve 2 without going through the pressure switch 9 for detecting the exhaust valve operation.
Further, when changing from the normal type to the double action type, the control valve 6 and the start valve 2 are directly connected to the start valve control signal line 18 via the second contact of the pressure switch 9 for rapid exhaust valve operation detection. You just need to connect them.

As described above, since the second contact point of the pressure switch 7 for monitoring the secondary side pressure drop or the second contact point of the pressure switch 9 for detecting the rapid exhaust valve operation is a double action type, The same type can be used.
For this reason, the common fire extinguishing equipment control panel 6 can be used even when the specific part is a double action type and the other part is a normal type. Further, even when the normal type is changed to the double action type, the fire extinguishing equipment control panel 6 can be used as it is.

  In the first and second embodiments, the secondary side pipe 3 is pressurized and filled with air. However, a gas other than air, for example, a liquid such as nitrogen or water may be pressurized and filled. .

  1 alarm valve, 2 start valve, 3 secondary side piping, 6 fire extinguishing equipment control panel, 7 pressure switch for secondary side pressure drop monitoring, 8 quick exhaust valve, 9 quick exhaust valve open detection pressure switch, 10 exhaust control Orifice, 11 Alarm valve closing orifice, 12 Check valve, 13 Manual start valve, 14 Quick exhaust valve secondary side pipe, 15 Drain pipe, 16 Primary side pipe, 17 Fire signal line, 18, 18a, 18b Start valve control Signal line, 19 Secondary pressure drop signal line, 20 Quick exhaust valve operation signal line, 22 Piston chamber, 23 Piston, 24 Valve seat, 25 Alarm valve opening piping, 26 Alarm valve closing piping, 27 Spring, 801 Valve body, 802 Disc, 803 Oil orifice, 804 Start spring, 805 Recovery spring, 806 Upper flam, 807 Lower fram, 808 Oil 809 Secondary pipe connection part 810 Exhaust part 811 Oil chamber 812 Upper oil chamber 813 Lower oil chamber 814 Guide rod 815 Valve body chamber 816 Fram chamber

Claims (2)

And the first start-up valve to open the first of the alarm valve,
A first secondary pipe which the first is connected to the secondary side of the alarm valve gas or liquid is filled under pressure,
A first closed sprinkler head attached to said first secondary pipe,
A first fire detector transmits a signal by detecting a physical quantity based on a fire phenomenon,
A first pressure switch that closes a contact when the pressure in the first secondary side pipe is equal to or lower than a set pressure ;
A first sprinkler fire extinguishing equipment with a,
A third activation valve for opening the third alarm valve;
A third secondary pipe connected to the secondary side of the third alarm valve and pressurized and filled with gas or liquid;
A third closed sprinkler head attached to the third secondary pipe;
A third fire detector for detecting a physical quantity based on a fire phenomenon and transmitting a signal;
A third sprinkler fire extinguishing facility comprising:
When the signal transmitted from the first fire sensor is received, a signal for opening the first start valve is transmitted to the first start valve control signal line, and the signal transmitted from the third fire sensor is received. Then, a control panel that transmits a signal for opening the third start valve to the third start valve control signal line,
The first start valve control signal line is connected to the first start valve via the first pressure switch,
The third start valve control signal line is directly connected to the third start valve;
The first sprinkler fire extinguishing equipment opens the first start valve and turns the first alarm valve on when the signal transmitted from the first fire detector and the first pressure switch close the contact. Open,
The third sprinkler fire extinguishing equipment opens the third start valve and opens the third alarm valve by a signal transmitted by the third fire detector;
Sprinkler fire extinguishing equipment characterized that you control and said third sprinkler fire extinguishing equipment and the first sprinkler fire extinguishing equipment in common the control panel.
And the second of the start-up valve to open the second alarm valve,
A second secondary pipe connected to said secondary side of the second alarm valve gas or liquid is filled under pressure,
A second closed sprinkler head attached to the second secondary pipe;
A second fire detector transmits a signal by detecting a physical quantity based on a fire phenomenon,
Branches before Symbol second secondary pipe, a quick exhaust valve for discharging the gas or liquid to the outside of the second secondary pipe,
A second pressure switch connected to the secondary side of the quick exhaust valve and closing the contact when the pressure of the gas or liquid discharged from the quick exhaust valve becomes equal to or higher than a set pressure ;
And the second of sprinkler fire extinguishing equipment with a,
A third activation valve for opening the third alarm valve;
A third secondary pipe connected to the secondary side of the third alarm valve and pressurized and filled with gas or liquid;
A third closed sprinkler head attached to the third secondary pipe;
A third fire detector for detecting a physical quantity based on a fire phenomenon and transmitting a signal;
A third sprinkler fire extinguishing facility comprising:
When a signal transmitted by the second fire sensor is received, a signal for opening the second activation valve is transmitted to a second activation valve control signal line, and a signal transmitted by the third fire sensor is received. Then, a control panel that transmits a signal for opening the third start valve to the third start valve control signal line,
The second start valve control signal line is connected to the second start valve via the second pressure switch;
The third start valve control signal line is directly connected to the third start valve;
The second sprinkler fire extinguishing equipment opens the second start valve and turns off the second alarm valve when the signal transmitted from the second fire detector and the second pressure switch close the contact. Open,
The third sprinkler fire extinguishing equipment opens the third start valve and opens the third alarm valve by a signal transmitted by the third fire detector;
Sprinkler fire extinguishing equipment characterized that you control and said third sprinkler fire extinguishing equipment and the second sprinkler fire extinguishing equipment in common the control panel.

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