JPH06134044A - Sprinkler fire extinguishing equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The number of test personnel will be reduced, and tests will be conducted without inspectors entering the house. [Structure] A secondary pipe 5 is provided from the automatic alarm valve 4 along the ceiling, and its end is returned to the vicinity of the automatic alarm valve 4 through a pipe 5a for terminal test. At the end of the end test pipe 5a, an end test valve 6a is provided for testing the equipment by causing a pressure drop on the side of the secondary pipe 5 similar to the operation of the sprinkler head 1. The drainage ports of the automatic alarm valve 4 and the end test valve 6a are shared.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a sprinkler fire extinguishing facility.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional sprinkler fire extinguishing system, and a dashed line indicates a floor 11, a wall 12 and a ceiling 13. The closed type sprinkler head 1 has a ceiling 13 in the room.
The fire extinguishing water is pressurized and applied to the secondary pipe 5 up to the head 1 in a normal monitoring state.

When a fire occurs in this state, the member for closing the valve of the head 1 is removed by heat and the pressurized fire extinguishing water in the secondary pipe 5 is discharged. The automatic alarm valve 4 is actuated by the decrease in pressure or running water in the pipe to open the flow path from the primary pipe 3 to the secondary pipe 5, and the pump control board 6 is activated by this detection signal. The pressure-extinguishing water is continuously supplied to the head 1.

The pressure switch 16 provided in the pressure tank 15 may detect a decrease in the pipe internal pressure, and the pump control panel 6 may start the fire extinguishing pump 2. Further, the end of the secondary pipe 5 is closed by a test manual valve 6a called an end test valve. When the terminal test valve 6a is opened during the test, the pressurized fire extinguishing water in the secondary pipe 5 is discharged through the orifice 6b, the transparent pipe 6c, and the drain pipe 6d. For example, when one head 1 operates. It will be in the same state. Then, in this state, the pressure gauge 6e is used to confirm whether or not there is a specified pressure. Therefore, by manually opening the end test valve 6a, the device can be tested without causing water loss due to the head 1.

When the equipment having such a structure is installed in a building, as shown in FIG. 4, the fire pump 2 and its control panel 6 are installed.
Is installed in a low place such as underground, and the primary pipe 3 is installed so as to face the higher layers. And automatic alarm valve 4 for each floor
The secondary pipe 5 is provided from the automatic alarm valve 4 along the ceiling 13 of each floor, and the end test valve 6a at the end thereof is provided in the pipe shaft.

In addition, in recent years, when apartment houses and other multi-story houses have become higher-rise, and fires occur on higher floors where fire trucks do not reach the ladder, fire spread to adjacent dwelling units can be prevented to some extent by the disaster prevention section. It is difficult to extinguish the fire itself. Therefore, since the initial fire extinguishing at the time of a fire is important, in recent years, sprinkler fire extinguishing equipment has been installed especially for the high floors of apartment houses such as high-rise apartments.

In such an apartment house, the terminal test valve and the like are provided in the veranda or the pipe shaft.

[0008]

However, in the above conventional sprinkler fire extinguishing equipment, the end test valve 6a is used.
When performing the test of the entire equipment by manually opening the, the water pressure at the end is set at the same time, and the water pressures of the primary pipe 3 and the secondary pipe 5 are set at the installation location of the automatic alarm valve 4. Since it is necessary to confirm whether the value is the value and whether the water pressure of the pump 2 is the set value at the installation location of the pump control panel 6 and the like, at least a total of three inspectors are required. There is.

Further, the terminal test valve 6a has a veranda 14
In the case where the dwelling unit is absent, the test cannot be performed when the dwelling unit is absent, and there is a problem that it is impossible to collectively test all the dwelling units in the collective housing. Further, it is uncomfortable for the resident because the inspector has to enter the house and open the end test valve 6a each time the test is performed. In view of the above-mentioned conventional problems, an object of the present invention is to provide a sprinkler fire extinguishing facility that can reduce the number of test personnel and can perform a test without an inspector entering the house.

[0010]

In order to achieve the above-mentioned object, the present invention provides a primary pipe arranged from a fire pump to a higher layer, a secondary pipe for supplying water to a closed type sprinkler head, and the primary pipe. Side and secondary pipe side are partitioned by the same pressure, and an automatic alarm valve that releases the partition on the primary pipe side and the secondary pipe side due to the pressure drop on the secondary pipe side due to the operation of the closed type sprinkler head, and the automatic alarm In the vicinity of the valve, an end test valve connected to the end of the secondary pipe, which performs the equipment of the apparatus by causing a pressure drop on the secondary pipe side similar to the case of the operation of the closed type sprinkler head, Is characterized by.

The present invention is also characterized in that the drainage pipe of the automatic alarm valve and the drainage pipe of the terminal test valve are connected to each other so that the drainage port is shared. The invention is also characterized in that an automatic alarm valve and a terminal test valve are installed outside each dwelling unit.

[0012]

In the present invention, with the above structure, the terminal test valve for testing the equipment by causing the pressure drop on the secondary pipe side similar to the case of the operation of the closed type sprinkler head is provided near the automatic alarm valve. Therefore, when conducting the test, one inspector can open the terminal test valve and check the terminal pressure and the pressures on the primary and secondary sides of the automatic alarm valve. Can be reduced.

Further, since the drainage pipe of the automatic alarm valve and the drainage pipe of the terminal test valve are connected to share the drainage port, the drainage system can be simplified. Since it is installed outside the dwelling unit, for example, inside the meter box, the inspector can perform the test without entering the house.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of the sprinkler fire extinguishing equipment according to the present invention, and the same components as those described in FIG. 4 are designated by the same reference numerals. In FIG. 1, the fire pump 2 and its control panel 6 are installed in a low place such as underground when installed in an apartment house, and are installed, for example, in a pipe shaft so that the primary pipe 3 is directed to a higher level. Further, the automatic alarm valve 4 is provided outside each dwelling unit, for example, in the meter box, the secondary pipe 5 from the automatic alarm valve 4 is provided along the ceiling 13 for each dwelling unit, and the end thereof is the end test pipe. It is returned to the vicinity of the automatic alarm valve 4 via 5a.

A closed type sprinkler head 1 is installed in the secondary pipe 5 at an appropriate place in the room. The sprinkler head 1 is attached to the end of the end test pipe 5a.
Terminal test valve 6 for testing the device by causing a pressure drop on the secondary pipe 5 side similar to the case of individual operation
a, an orifice 6b that creates an operating state of one sprinkler head, a transparent pipe 6c for visually confirming whether fire extinguishing water is flowing at the time of testing, and a secondary pipe 5
A pressure gauge 6e for detecting the pressure at the end of is provided.

That is, in this embodiment, the end test valve 6a
Etc. are not provided on the balcony 14 of the dwelling unit. The drain pipe 6d is connected to the drain pipe (described later) of the automatic alarm valve 4. Next, the configuration of the automatic alarm valve 4 will be described with reference to FIGS. 2 and 3. The automatic alarm valve 4 includes a flowing water detection valve 4a as shown in detail in FIG. 3 and a secondary side of the flowing water detection valve 4a. It has a drain valve 4b for preventing excessive water pressure. The running water detection valve 4a is provided with a valve 41 called a ramper for separating the primary pipe 3 and the secondary pipe 5, and the secondary pipe 5 side is connected to the drain valve 4b shown in FIG.

The sluice valve 41 can be opened and closed in the direction of the arrow shown in the figure, and the valve seat 4 can be opened due to the area difference between the primary side and the secondary side and its own weight.
When pressed by 2, the primary pipe 3 and the secondary pipe 5 have the same pressure (P1 =
It is partitioned by P2), and an opening 43 is formed in the valve seat 42. As shown in FIG. 2, the opening 43 is connected to a pressure switch (PS) 45 through a manual valve 44 that is normally open, and is also connected to an auto drip 46 of the drain valve 4b so that extra water for extinguishing fire is automatically supplied. Drip 46
It is configured to flow to the secondary side of the drain valve 4b via the.

The manual valve 44 is closed when the detection signal of the pressure switch 45 is stopped and a test is performed on the pump control panel 6 side. That is, when the pressure P2 of the secondary pipe 5 becomes lower than the pressure P1 of the primary pipe 3 side and the sluice valve 41 opens against the self-weight etc., the pressurized fire extinguishing water in the primary pipe 3 flows to the secondary pipe 5 side. Further, pressure is applied to the pressure switch 45 through the opening of the valve seat 42. As shown in FIG. 2, the drain valve 4b has a primary side connected to the secondary pipe 5 side of the flowing water detection valve 4a, and a secondary side connected to the drain pipe 6d of the terminal test valve 6a to have a common drain port. .

In such a structure, when a fire occurs, the member for closing the valve of the head 1 is removed by heat and the pressurized fire extinguishing water in the secondary pipe 5 is discharged.
Since the internal pressure P2 is reduced, the sluice valve 41 is connected to the secondary pipe 5
It opens to the side and this pressure change is detected by the pressure switch 45. Then, when the pump 2 is driven by the pump control panel 6 by this detection signal, the fire extinguishing water is supplied to the head 1 through the primary pipe 3, the flowing water detection valve 4a, and the secondary pipe 5, so that the water is continuously discharged. Done.

When the terminal test valve 6a is manually opened to test the entire apparatus, since the terminal test valve 6a is installed in the vicinity of the automatic alarm valve 4, the inspector who opens the terminal test valve 6a. It is possible to confirm whether each water pressure of the primary pipe 3 and the secondary pipe 5 is a set value at the place where the automatic alarm valve 4 is installed, and it is also possible to confirm whether the terminal pressure is the set value.

Therefore, the other person tests whether the water pressure of the pump 2 is the set value or the like at the installation location of the pump control panel 6, so that a total of two persons can perform the test. Further, according to the above embodiment, the automatic alarm valve 4 and the end test valve 6 are provided.
Since the drainage port of a is common, the drainage system can be simplified, and further, the automatic alarm valve 4 and the terminal test valve 6
Since a is installed outside the dwelling unit, for example, inside the meter box, the inspector can perform the test without entering the dwelling unit.

Further, in the above embodiment, the pump 2 is started by the detection signal from the pressure switch 45 of the automatic alarm valve 4, but the pressure switch 16 provided in the pressure tank 15 detects the decrease in the pipe internal pressure. The fire suppression pump 2 may be activated by the pump control panel 6. Further, in the above-described embodiment, the description has been given by taking the collective housing as an example, but it may be provided in a general building. Further, the automatic alarm valve 4 may be provided not for each dwelling unit but for each floor.

[0023]

As described above, according to the present invention,
When conducting the test, one inspector can open the end test valve and check the end pressure and the pressures on the primary and secondary sides of the automatic alarm valve, thus reducing the number of test personnel. it can. The present invention can also simplify the drainage system.

The present invention also allows the inspector to perform tests without having to enter the house.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a sprinkler fire extinguishing facility according to the present invention.

FIG. 2 is a configuration diagram showing the relationship between the configuration of the automatic alarm valve of FIG. 1 and the automatic alarm valve and the terminal test valve.

FIG. 3 is a side sectional view showing the configuration of the water flow detection valve of FIG.

FIG. 4 is a configuration diagram showing a conventional sprinkler fire extinguishing facility.

[Explanation of symbols]

 1: Sprinkler head 2: Fire pump 3: Primary piping 4: Automatic alarm valve 4a: Flow detection valve 4b: Drain valve 5: Secondary piping 5a: Terminal test piping 6: Pump control panel 6a: Terminal test valve 6b: Orifice 6c: Transparent pipe 6d: Drain pipe 6e: Pressure gauge 13: Ceiling 14: Veranda 15: Pressure tank 16: Pressure switch 41: Gate valve 42: Valve seat 43: Opening 44: Manual valve 45: Pressure switch (PS) 46: Auto drip

Claims (3)

[Claims] Claim: What is claimed is: 1. A primary pipe arranged to extend from a fire pump to a higher layer, a secondary pipe for supplying water to a closed type sprinkler head, a primary type pipe side and a secondary type pipe side which are partitioned by the same pressure, and a closed type sprinkler is provided. An automatic alarm valve that releases the partition on the primary pipe side and the secondary pipe side due to the pressure drop on the secondary pipe side due to the operation of the head, and in the vicinity of the automatic alarm valve, connected to the end of the secondary pipe, A sprinkler fire extinguishing facility having an end test valve for testing the facility by causing a pressure drop on the secondary pipe side similar to the case of the operation of the closed type sprinkler head. 2. The sprinkler fire extinguishing system according to claim 1, wherein the drain pipe of the automatic alarm valve and the drain pipe of the terminal test valve are connected to each other to share a drain port. 3. The sprinkler fire extinguishing system according to claim 1, wherein the automatic alarm valve and the terminal test valve are arranged outside each dwelling unit.