WO2017034382A1

WO2017034382A1 - T-branch for sprinkler pipe for automatically controlling flowing water, and sprinkler pipe system including same

Info

Publication number: WO2017034382A1
Application number: PCT/KR2016/009562
Authority: WO
Inventors: 김진태; 김송이; 김승연
Original assignee: 김진태
Priority date: 2015-08-27
Filing date: 2016-08-29
Publication date: 2017-03-02

Abstract

Provided are a t-branch for a sprinkler pipe and a sprinkler pipe system including the t-branch, wherein the t-branch can selectively sprinkle fire-fighting water only on a region on fire and can prevent skipping even when there are many obstacles for sprinkling or when the sprinkler head gap is made narrower. This t-branch for a sprinkler pipe comprises: a t-branch body (9) in a cylindrical shape; a first outlet (11) formed in one end of the t-branch body (9) and connected to a pipe of an enclosed-type sprinkler head; an inlet (10) formed in the t-branch body (9) and connected to a water supply pipe; a second outlet (12) formed in the t-branch body (9) and connected to a pipe of an open-type sprinkler head; a piston valve disposed in the t-branch body (9), moved in the lengthwise direction of the t-branch body (9) by a fluid pressure difference in the t-branch body (9) and simultaneously controlling the opening and closing of the first outlet (11) and the second outlet (12) in the event of a fire; and an inner wall groove portion (18) formed in the inner wall of the t-branch body (9) between the piston valve and the first outlet (11).

Description

Branch sprinkler for sprinkler piping to automatically control the flow of water and sprinkler piping system including the same

The present invention relates to a sprinkler pipe branch tee and a sprinkler pipe system including the same, and more particularly, to a sprinkler pipe branch tee that automatically controls the flow of water and a sprinkler pipe system including the same.

A sprinkler is an automatic fire extinguishing device for extinguishing a fire. In the event of a fire, the extinguishing pump pressurizes the extinguishing water and the oil / water detector opens the main valve so that the extinguishing water is sprayed through the sprinkler head. These sprinkler heads are classified into two types according to the presence or absence of a heat sensing unit for detecting a fire occurrence. A closed sprinkler head in which the heat sensing unit detects a hot fire heat and opens the head, and a waterproof spout without a separate heat sensing unit is provided. There is an open sprinkler head in which the water is always open when the valve is opened and closed by the detector.

In the case of the sprinkling system using the open sprinkler head, the time required for extinguishing the fire is very short and effective because the sprinkler head is installed in a specific area and the water is sprinkled temporarily over the entire area. However, if the valve is opened due to a malfunction of the detector, the damage caused by water can be very serious.

Thus, the demand for closed sprinkler heads is increasing. In the event of a fire, the hot heat rises upwards to form a ceiling jet, where the closed sprinkler head is required to be installed within 30 cm of the ceiling for head opening by the hot ceiling. However, even in the case of a closed sprinkler head, there is a problem of malfunction due to a skipping effect that prevents the head from opening when a fire occurs. The skipping phenomenon means that the water radiated from the sprinkler head opened at the initial stage of the fire directly wets the surrounding head, or the droplets are raised along the plume air flow generated during the fire, and are attached to the surrounding head to cool the thermal part. It is a phenomenon that obstructs the opening of the peripheral head. In addition, fine water droplets sprayed at the first open sprinkler head may hinder the opening of adjacent heads by cooling the surrounding hot jet air stream.

The skipping phenomenon occurs mainly when the closed heads are too close to each other. To prevent this, the National Fire Protection Association (NFPA) installed at least 1.8 m for regular heads and at least 2.4 m for Early Suppression Fast Response (ESFR) heads. It is recommended. Therefore, even in a place with a lot of flammable, there is a problem that the spraying density is not high enough because the closed head can not be installed closely.

Hereinafter, the problem of the conventional closed sprinkler head will be described in detail with reference to FIG. 1. 1 shows a closed sprinkler piping system according to the prior art. In FIG. 1, (A) shows a bottom-up head, (B) shows a top-down head (dry pendent head).

In places where there are watering obstacles such as various pipes and cable trays, such as underground parking lots, sprinkler heads should be installed above and below the watering obstacles in order to spray water evenly over the entire area in case of fire. Referring to FIG. 1, the closed sprinkler head 1 is installed above and below the watering obstacle 7. In the event of a fire, a hot ceiling jet flow occurs due to the heat of fire, so that the upper head 1 is opened first, and then the lower head 1 is expected to open sooner if the fire goes further. Meanwhile, a baffle plate 2 is installed on the lower head 1 like an umbrella to prevent water droplets radiated from the first upper head 1 which is opened first to prevent the lower head 1 from interfering with the opening. It is. Although the shielding plate 2 can prevent the lower head 1 from directly wetting, the water droplets sprayed by the upper head 1 still skip by cooling the ceiling flow around the lower head 1. Phenomenon occurs.

In addition, in the case of FIG. 1A, due to the pipes installed downward for the lower head 1, it is difficult to secure sufficient ceiling heights in the underground parking lot, and the aesthetics are not good even when installed. Labor costs are required. Reference numeral 3, which is not described, is a water supply pipe, 4 is a drain valve, 6 is a ceiling, and 7 is pipes that impede spraying.

In addition, in FIG. 1B, a freeze-drying dry pendant head 1 is used, but since the head can be installed in a downward direction without requiring a drain valve, relatively high ceilings can be secured. Due to the pendant head, the construction cost is high. Unexplained reference numeral 5 denotes a draft pendant head body.

Another example of a watering obstacle is a rack-type warehouse, where items are stacked on high, tiered racks that are difficult to spray effectively. To overcome this problem, install an In-Rack sprinkler head with a shield plate from the beginning, or in a warehouse with a ceiling height of 13.7m or less, use a fire suppression type head that does not fly well in the plume air flow due to large droplets. Install. However, it is still necessary to install the sprinkler head only on the ceiling because it can not prevent the skipping phenomenon, there is a problem that the fire suppression efficiency is significantly lowered because there are many watering obstacles.

The problem to be solved by the present invention is to provide a sprinkler pipe divergence that can selectively spray the extinguishing water only in the fire zone and can prevent the skipping phenomenon even if there are many watering obstacles or narrow the spacing of the sprinkler head.

Another object of the present invention is to provide a sprinkler piping system including such a branch tee.

Problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Branch sprinkler pipe sprinkler for automatically controlling the flow of water according to an embodiment of the present invention for achieving the above object, the branching body of the cylindrical shape (9); A first outlet 11 formed at one end of the branch body 9 and connected to a pipe of a closed sprinkler head; An inlet 10 formed in the branch body 9 and connected to a water supply pipe; A second outlet 12 formed in the branch body 9 and connected to a pipe of an open sprinkler head; It is disposed in the branch body (9), when the fire occurs in the longitudinal direction of the branch body (9) by the internal fluid pressure difference of the branch body (9) and the first outlet 11 and A piston valve for simultaneously controlling opening and closing of the second outlet 12; And an inner wall groove 18 formed in an inner wall of the branch body 9 between the piston valve and the first outlet 11. The piston valve may include a main blocking member 14a for shielding the inside of the branch tee adjacent to the first outlet 11 when no fire occurs, and the second outlet opening connected to the main blocking member when no fire occurs. And a sub blocking member 14b for shielding the inside of the branch tee adjacent to 12).

When the closed sprinkler head is opened at the time of a fire, the piston valve moves toward the first outlet 11 due to the fluid pressure difference in the branching body 9, and the main blocking member 14a is moved to the inner wall. It is disposed to overlap with the groove portion 18 to form a flow path along the edge of the main blocking member 14a, the sub blocking member 14b may open the second outlet (12).

It may further include a spring 20 disposed between the first outlet 11 and the main blocking member 14a.

It may further include a micro through hole 16 penetrating through the main blocking member 14a to balance the pressure in the branch body 9.

The inlet may be formed at the other end of the branching body and the second outlet may be formed at one or more sidewalls of the branching body.

The piston valve may have a mini cylinder shape, the main blocking member may be formed of a disk plate shielding the inside of the mini cylinder, and the sub blocking member may be formed of a side wall of the mini cylinder.

An opening may be formed in the sidewall of the mini cylinder to form a flow path above and below the main blocking member.

The inlet may be formed on the sidewall of the branching body and the second outlet may be formed at one or more ends of the branching body.

The main blocking member may be formed of a disk to shield the first outlet, and the sub blocking member may be formed of a disk to shield between the inlet and the second outlet.

It may further include an additional blocking member connected to the sub blocking member to directly shield the second outlet.

Sprinkler piping system according to an embodiment of the present invention for achieving the another object, the branch tee; A water supply pipe connected to the inlet of the branch tee; A closed sprinkler head connected to the first outlet of the branch tee through a pipe; And an open sprinkler head connected to the second outlet of the branch tee through a pipe. Here, when the closed sprinkler head is opened when a fire occurs, the first outlet and the second outlet may be simultaneously opened due to the fluid pressure difference inside the branch tee.

Details of other embodiments are included in the detailed description and drawings.

As described above, the sprinkler piping branch tee according to the present invention and the sprinkler piping system including the same have the following excellent effects.

First, since the present invention uses the closed sprinkler head as the main head, it is possible to minimize flooding damage to the fire-free area by spraying the fire-producing area locally.

Second, the present invention can effectively extinguish a fire without a skipping phenomenon in a place where a lot of watering obstacles or a lot of flammables should be high watering density. The present invention uses a closed sprinkler head and an open sprinkler head as a main head and a sub head, respectively, and installs a branch tee with flow control therebetween, and automatically sprays the sub head when the main head is opened and sprayed. It has a structure. Therefore, by installing the main head near the ceiling and the sub head between the shelves in the rack-type warehouse having a shelf structure, it is possible to effectively overcome the watering obstacle.

As another example, in a large area such as a parking lot with a high fire load and a lot of watering obstacles, even if a closed sprinkler head (main head) is arranged at regular intervals to prevent skipping, it is interlocked with the main head in between. By installing an open sprinkler head (sub head) to sprinkle with water, the sprinkler head as a whole can be closely arranged to increase the sprinkling density.

Furthermore, the present invention prevents the spread of combustion to the upper part due to the flame ejected through the fire chamber window during the high-rise building or prevents the fire from expanding into the adjacent chamber through the opening of the wall through which the conveyor belt passes in the workplace. can do.

Third, according to the present invention can be designed so as to lower the floor of the building in the range that does not violate the provisions of the law, there is an effect of reducing the overall construction cost. Our legislation requires the building's underground parking lot to have a minimum height from the floor of the parking lot to the ceiling fixture (typically sprinkler pipe or sprinkler head), with aisle area of at least 2.3m and a parking line area of at least 2.1m. . According to the present invention, since a sub head positioned relatively below the main head and the sub head is used as an open sprinkler head, there is no need to use a separate drain valve or a shield plate. Therefore, the floor height can be lowered, which not only reduces the construction cost but also improves aesthetics.

1 shows a closed sprinkler piping system according to the prior art.

2 is a perspective view of a branch tee for sprinkler piping according to the first embodiment of the present invention.

FIG. 3 is a cutaway view of the branch tee of FIG. 2 in a longitudinal direction.

4 is a longitudinal cross-sectional view of the branch tee of FIG. 2.

5 is an exploded perspective view of the branch tee of FIG. 2.

6 is a piping diagram of the sprinkler piping system having the branch tee of FIG. 2.

7 shows a case where the sprinkler piping system according to the first embodiment of the present invention is applied in a rack-type warehouse having a large fire load.

FIG. 8 is a modification of FIG. 4, which is a longitudinal cross-sectional view of a sprinkler piping branch tee according to a second embodiment of the present invention.

9 is a perspective view of a branch tee for sprinkler piping according to a third embodiment of the present invention.

FIG. 10 is a cutaway view of the branch tee of FIG. 9 in the longitudinal direction.

11 is a longitudinal cross-sectional view of the branch tee of FIG. 9.

12 is an exploded perspective view of the branch tee of FIG. 9.

FIG. 13 is a piping diagram of the sprinkler piping system having the branch tee of FIG. 9.

14 is a perspective view of a branch tee for sprinkler piping according to a fourth embodiment of the present invention.

FIG. 15 is a cutaway view of the branch tee of FIG. 14 in a longitudinal direction.

16 is a longitudinal cross-sectional view of the branch tee of FIG. 14.

17 is an exploded perspective view of the branch tee of FIG. 14.

FIG. 18 is a cross-sectional view of the sprinkler piping branch tee according to the fifth embodiment of the present invention.

19 is a perspective view of a branch tee for sprinkler piping according to a sixth embodiment of the present invention.

20 is a cutaway view of the branching tee of FIG. 19 in a longitudinal direction.

21 is a longitudinal cross-sectional view of the branch tee of FIG. 19.

22 is an exploded perspective view of the branch tee of FIG. 19.

23 is a piping diagram of a sprinkler piping system according to embodiments of the present invention.

24 is a view comparing the ceiling height of the sprinkler piping system of Figure 23 and the piping system according to the prior art.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Branch tee referred to in embodiments of the present invention refers to a joint pipe connecting at least three pipes to each other. In the embodiments of the present invention, the 'T' type branching tee is mainly described as an example, but the present invention is not limited to the shape of the branching tee.

Hereinafter, a sprinkler piping branch tee according to the first embodiment of the present invention and a sprinkler piping system including the same will be described with reference to FIGS. 2 to 8. 2 is a perspective view of a branching tee for sprinkler pipe according to the first embodiment of the present invention, FIG. 3 is a cutaway view of the branching tee of FIG. 2 in a longitudinal direction, and FIG. 4 is a longitudinal cross-sectional view of the branching tee of FIG. 2. 5 is an exploded perspective view of the branching tee of FIG. 2. FIG. 6 is a piping diagram of the sprinkler piping system having the branch tee of FIG. 2, and FIG. 7 illustrates a case in which the sprinkler piping system according to the first embodiment of the present invention is applied in a rack type warehouse having a large fire load. (In Fig. 3, Fig. 4, and Fig. 6, the state (A) shows the case in which the sprinkler head is normally closed, and the state (B) shows the case in which the sprinkler head is opened in the event of a fire.)

As shown in Figures 2 to 5, the branching tee for sprinkler pipe of the present embodiment is a branching body 9, the first outlet 11, the inlet 10, the second outlet 12, the piston It comprises a valve 13 and the inner wall groove 18.

Specifically, the branching body 9 has a cylindrical shape as a whole, and the first outlet 11 is formed at one end of the branching body 9. The first outlet 11 is connected to the pipe of the closed sprinkler head so that the fire extinguishing water is delivered to the closed sprinkler head through the first outlet 11 when a fire occurs. Here, the closed sprinkler head (see reference numeral 1 of FIG. 6) is provided with a thermal sensing unit capable of detecting hot fire heat, and in case of fire, the head is opened to spray extinguishing water.

The inlet 10 is formed at the other end of the branching body 9. Inlet 10 is connected to the water supply pipe (see 3 in Figure 6) is supplied with the digestive water. The water supply pipe 3 is connected to a fire pump or a water supply pipe.

A second outlet 12 is formed in the side wall of the branching body 9. The second outlet 12 is connected to the pipe of the open sprinkler head so that the fire extinguishing water is delivered to the open sprinkler head through the second outlet 12 in the event of a fire. Here, the open sprinkler head (see reference numeral 25 of FIG. 6) does not have a heat sensing portion, and watering is determined by opening and closing the valve according to a fire occurrence in a state where the waterproof opening is always open. Open sprinkler head piping is dry piping.

The piston valve 13 is disposed in the branching body 9 and moves in the longitudinal direction of the branching body 9 by the internal fluid pressure difference of the branching body 9 at the time of a fire, the first outlet 11. And simultaneously controlling opening and closing of the second outlet 12. Specifically, the piston valve 13 includes a main blocking member 14a for controlling the opening and closing of the first outlet 11 and a sub blocking member 14b for controlling the opening and closing of the second outlet 12. .

Specifically, the piston valve 13 may be formed in a mini-cylinder shape as a whole to be in close contact with the inner circumferential surface of the branching body 9. The main blocking member 14a may be formed of a disc plate that crosses the inside of the mini cylinder in the transverse direction, and blocks the flow of the digestive water from the inlet 10 to the first outlet 11 in the branch tee. Thus, the main blocking member 14a determines whether to spray the closed sprinkler head. The sub blocking member 14b may be formed as a side wall of the mini cylinder, and normally shields the inside of the branch tee adjacent to the second outlet 12 in case of no fire (state (A)). Accordingly, the sub blocking member 14b determines whether to spray the open sprinkler head.

In addition,

openings

17 and 19 are formed on the sidewalls of the mini cylinders constituting the piston valve 13 to form flow paths in the upper and lower portions of the main blocking member 14a. The

openings

17 and 19 work together with the inner wall groove 18 to form a continuous flow path of the digestion water from the inlet 10 to the first outlet 11. The inner wall groove 18 is formed in the inner wall of the branching body 9 and is located between the piston valve 13 and the first outlet 11. The inner wall groove 18 may be integrally formed along the circumference of the inner wall, or may be a combination of a plurality of separate grooves.

The micro through hole 16 is formed through the main blocking member 14a, which maintains the same pressure at the upper and lower portions of the main blocking member 14a when no fire occurs, that is, when the closed sprinkler head is closed. Play a role.

A spring 20 is disposed between the first outlet 11 and the piston valve 13 or between the first outlet 11 and the main shutoff member 14a. The piston valve 13 moves toward the inlet 10 by the elastic force of the spring 20, and the sub blocking member 14b shields the second outlet 12. A spring stopper 21 is formed on the inner circumferential surface of the branching body 9 positioned between the first outlet 11 and the inner wall groove 18 to fix the upper end of the spring 20. However, the present invention is not limited thereto, and even if the spring stopper 21 is not provided separately, substantially the same effect can be obtained by the coupling relationship with the external pipe. For example, when the pipe of the closed sprinkler head is screwed into the screw groove formed on the inner circumferential surface of the first outlet 11, the pipe of the closed sprinkler head plays a substantially same role as the spring stopper 21.

One or more o-rings 22 are formed on the outer circumferential surface of the piston valve 13 so that the extinguishing water from the inlet 10 is leaked to the first outlet 11 or the second outlet 12 normally. To prevent them.

A snap ring 23 is installed on the inner circumferential surface of the branching body 9 adjacent to the inlet 10 to prevent a downward movement of the piston valve 13 to prevent separation. However, the present invention is not limited thereto, and even if the snap ring 23 is not provided separately, a substantially identical effect may be obtained by a coupling relationship with an external pipe. For example, when the water supply pipe is screwed into the screw groove formed on the inner circumferential surface of the inlet 10, the water supply pipe serves substantially the same as the snap ring (23). In addition, as shown in FIG. 5, when the spring 20, the piston valve 13, and the snap ring 23 are sequentially inserted and assembled through the inlet 10 of the branching body 9, the branching of the present embodiment is performed. Tee A can be easily assembled. At this time, the spring 20, the piston valve 13 may be fixed to the inside of the branch body (9) by the spring stopper 21 and the snap ring (23). The snap ring 23 may be inserted into and fixed to the groove formed in the inner wall of the branch body 9.

Referring to FIG. 6, the sprinkler piping system has a branch type A, a water supply pipe 3 connected to the inlet of the branch tee A, and a closed type connected to the first outlet of the branch tee A through a pipe. A sprinkler head 1 and an open sprinkler head 25 are connected to a second outlet of the branch tee through a pipe. The piping system of the present invention uses a closed sprinkler head as a med head for detecting the occurrence of a fire, and uses an open sprinkler head as a sub head which automatically interlocks with the main head.

Hereinafter, the operation of the sprinkler for sprinkler pipe of the present invention will be described.

In normal or no fire (state (A)), since the closed sprinkler head 1 is shielded, the inside of the branch body 9 achieves a constant pressure as a whole, and the piston valve 13 of the spring 20 The pressure moves in the inlet 10 direction. At this time, the main blocking member 14a shields the inside of the branch tee facing the first outlet 11, and the sub blocking member 14b shields the inside of the branch tee adjacent to the second outlet 12.

When the closed sprinkler head 1 is opened in the event of a fire, the pressure inside the first outlet 11 drops and the piston valve 13 is directed toward the first outlet 11 due to the fluid pressure difference in the branch body 9. Will be moved. When the main blocking member 14a moves upward and stops at a position overlapping with the inner wall groove 18, a flow path is formed along the edge of the main blocking member 14a. Specifically, the flow path is formed in the order of the opening 17, the inner wall groove 18, and the opening 19. At the same time, the sub blocking member 14b moves in the direction of the first outlet 11 to open the second outlet 12.

As shown in Figure 7, applying the sprinkler pipe system of the present invention to a rack-type warehouse with a large fire load can effectively extinguish the fire. That is, in the related art, when the flammables 27 are stacked on a rack 26 having a plurality of layers, it is difficult to effectively extinguish a fire due to a skipping phenomenon and a watering obstacle. However, in the present invention, the closed sprinkler head 1 is installed near the ceiling 6 so as to easily detect the ceiling jet flow due to the fire heat, and below the branch tee of the present invention. By installing the open sprinkler head 25 interlocked with the closed sprinkler head 1 using A), the fire can be suppressed without being affected by the skipping phenomenon and the watering obstacle.

Hereinafter, a branch tee for a sprinkler pipe according to a second embodiment of the present invention will be described with reference to FIG. 8. FIG. 8 is a modification of FIG. 4, which is a longitudinal cross-sectional view of a sprinkler piping branch tee according to a second embodiment of the present invention. For convenience of explanation, the differences from the first embodiment (Figs. 2 to 7) will be mainly described.

As shown in FIG. 8, in the case of the branch tee B of the present embodiment, a first outlet 11 connected to the closed sprinkler head is formed at one end side wall of the branch tee 9. Preferably, the first outlet 11 and the inner wall groove 18 may be overlapped. In the present embodiment, when the piston valve 13 is raised at the time of fire occurrence, since the

openings

17 and 19 of the piston valve 13 are directly connected to the first outlet 11, the extinguishing water goes to the first outlet 11. It can be delivered more smoothly. In this embodiment, the case in which the inner wall groove portion 18 is additionally generated on the inner circumferential surface of the branching body 9 has been described as an example. However, the present invention is not limited thereto, and the first outlet 11 or the passage 18 ′ connected thereto. ) May correspond to the inner wall groove 18.

Hereinafter, a sprinkler piping branch tee according to a third embodiment of the present invention and a sprinkler piping system including the same will be described with reference to FIGS. 9 to 13. 9 is a perspective view of a branching tee for sprinkler pipe according to a third embodiment of the present invention, FIG. 10 is a cutaway view of the branching tee of FIG. 9 in a longitudinal direction, and FIG. 11 is a longitudinal section of the branching tee of FIG. 9. 12 is an exploded perspective view of the branching tee of FIG. 9. FIG. 13 is a piping diagram of the sprinkler piping system having the branch tee of FIG. 9. For convenience of explanation, the differences from the first embodiment (Figs. 2 to 7) will be mainly described.

9 to 12, the sprinkler piping branch tee C of the present embodiment includes a plurality of second outlets 12 formed on the sidewall of the branch body 9. In the present embodiment, four second outlets 12 are described as an example, but the present invention is not limited to the number of second outlets 12.

In addition, the piston valve 13 of this embodiment functions substantially the same as the previous embodiment, but has given slight modifications to its shape. That is, the opening 17 formed in the side wall of the piston valve 13 has the structure connected as a whole. To this end, an additional disk 15a is formed below the main blocking member 14a and arranged side by side with the main blocking member 14a and coupled through the connecting member. The sub blocking member 14b is positioned below the additional disk 15a and is coupled to the edge of the additional disk 15a. At least one opening 15b is formed in the additional disk 15a.

When the piston valve 13 moves in the direction of the first outlet 11 during a fire, the extinguishing water introduced from the inlet 10 is connected to the opening 15b, the opening 17, the inner wall groove 18, and the opening 19. It is discharged to the first outlet 11 through. At the same time, it is also discharged to the plurality of second outlets 12.

Referring to FIG. 13, the closed sprinkler head 1 is arranged at regular intervals so that a skipping phenomenon does not occur in a place where a large risk of fire occurs due to a lot of combustibles such as an underground parking lot and a warehouse. Branch tee C is coupled to the lower portion of the pipe of the closed sprinkler head 1. The dry duct is connected to the branch tee through four second outlets 12 in the horizontal direction. In addition, the inlet 10 formed in the lower portion of the branch tee (C) is connected to the water supply pipe (3). Four dry pipes are collected through the connecting pipe (P). The connecting pipe P has four inlets in the horizontal direction and an outlet in the downward direction. An open sprinkler head 25 is provided at the outlet of the connecting pipe P.

According to the present embodiment, when the closed sprinkler head 1 is first opened by the hot heat of the ceiling in the event of a fire, the second outlet 12 of the branch tee C is also opened. Accordingly, since the sprinkler head 1 is disposed on the ceiling together with the four sprinkler heads 25 arranged around the sprinkler head 1, the sprinkler head is densely disposed while preventing the skipping phenomenon. Can increase.

Hereinafter, the sprinkler piping branch tee according to the fourth embodiment of the present invention will be described with reference to FIGS. 14 to 17. Here, FIG. 14 is a perspective view of a sprinkler piping branch tee according to a fourth embodiment of the present invention, FIG. 15 is a cutaway view of the branch tee of FIG. 14 in a longitudinal direction, and FIG. 16 is a longitudinal cross section of the branch tee of FIG. 14. 17 is an exploded perspective view of the branch tee of FIG. 14. For convenience of explanation, the differences from the first embodiment (Figs. 2 to 7) will be mainly described.

14 to 17, an inlet 10 connected to the water supply pipe is formed on the side wall of the branching body 9, and the second outlet 12 connected to the pipe of the open sprinkler head is a branching body. It is formed in the lower end of (9). Therefore, when the extinguishing water flows in the lateral direction with respect to the branch tee D, the extinguishing water is sprinkled by the closed sprinkler head disposed above and the open sprinkler head disposed below.

The piston valve 13 is connected to the main shutoff member 14a for shielding the inside of the branch tee adjacent to the first outlet 11, and is connected to the main shutoff member 14a to shield the inside of the branch tee adjacent to the second outlet 12. And a sub blocking member 14b. For example, the main blocking member 14a and the sub blocking member 14b may be made of disk plates arranged horizontally to each other, and they are connected to each other by a connecting member 30a such as a rod. The main blocking member 14a may have a larger area than the sub blocking member 14b.

The lower portion of the main blocking member 14a is prevented from being moved further downward by the step 32 protruding from the inner wall of the branching body 9. The sub blocking member 14b is inserted through the space formed by the step 32 to shield the second outlet 12. On the outer circumferential surface of the connecting member 30a, a guide member 30b is formed to help smooth reciprocation of the piston valve 13. For example, the guide member 30b may be formed in a plurality of wings.

The spring stopper 31 is not fixed to the branching body 9 but is made of an independent member and can be inserted in the first outlet 11. A snap ring 23 may be disposed above the spring stopper 31 to prevent the piston valve 13 and the spring stopper 31 from being separated. Referring to FIG. 17, when the piston valve 13, the spring 20, the spring stopper 31, and the snap ring 23 are sequentially inserted and assembled through the first outlet 11 of the branch body 9, The branch tee D of this embodiment can be easily assembled.

Hereinafter, a branch tee for a sprinkler pipe according to a fifth embodiment of the present invention will be described with reference to FIG. 18. FIG. 18 is a cross-sectional view of the sprinkler piping branch tee according to the fifth embodiment of the present invention. For convenience of explanation, the difference from the fourth embodiment (Figs. 14 to 17) will be mainly described.

In the case of the branch tee E of the present embodiment, a first outlet 11 connected to the closed sprinkler head is formed at one side wall of the branch tee 9. Preferably, the first outlet 11 and the inner wall groove portion may be overlapped. In the present embodiment, when the piston valve 13 is raised at the time of fire occurrence, since the opening 17 of the piston valve 13 is directly connected to the first outlet 11, the extinguishing water is more smoothly provided to the first outlet 11. Can be delivered. In the present embodiment, the first outlet 11 or the passage 18 ′ connected thereto may correspond to the inner wall groove 18 even though the inner wall groove is not additionally formed on the inner circumferential surface of the branching body 9. Reference numeral 34, not described in FIG. 18, is a branching cap.

Hereinafter, the sprinkler piping branch tee according to the sixth embodiment of the present invention will be described with reference to FIGS. 19 to 22. Here, FIG. 19 is a perspective view of a branching tee for sprinkler piping according to a sixth embodiment of the present invention, FIG. 20 is a cutaway view of the branching tee of FIG. 19 in a longitudinal direction, and FIG. 21 is a longitudinal section of the branching tee of FIG. 19. 22 is an exploded perspective view of the branching tee of FIG. 19. For convenience of explanation, the difference from the fourth embodiment (Figs. 14 to 17) will be mainly described.

As shown in FIGS. 19 to 22, the sprinkler pipe branching tee of the present embodiment includes a plurality of second outlets 12 formed on the side wall of the lower end of the branching body 9. In the present embodiment, four second outlets 12 are described as an example, but the present invention is not limited to the number of second outlets 12.

In addition, the piston valve 13 of the present embodiment functions substantially the same as the third embodiment, but has slightly modified its shape. That is, the connecting member 30a extends below the sub blocking member 14b, and the additional blocking member 40 is coupled to the connecting member 30a under the sub blocking member 14b. The additional blocking member 40 has a cylindrical shape and forms a flow path 15 therein.

Accordingly, the sub blocking member 14b serves to shield between the inlet 10 and the second outlet 12, and the additional blocking member 40 serves to directly shield each second outlet 12.

Reference numeral 33 not described in FIGS. 20 and 21 is a microthrough hole for drainage.

Hereinafter, an example in which the sprinkler piping system of the present invention is applied to a place where there are many watering obstacles will be described with reference to FIGS. 23 and 24. 23 is a piping diagram of a sprinkler piping system according to embodiments of the present invention, Figure 24 is a view comparing the ceiling of the sprinkler piping system of Figure 23 and the piping system according to the prior art.

As shown in FIG. 23, the present embodiment will be described taking the case of designing a sprinkler piping system by applying the branch tee A and the branch tee D of the present invention as an example. When there are watering obstacles 7 such as various pipes and cable trays, such as underground parking lots, minimum ceiling heights are required by law. The ceiling is here defined as the height from the floor to the ceiling fixture, ie sprinkler pipe or sprinkler head. In the present invention, even if the top-down open sprinkler head 25 is installed at substantially the same height as the sprinkling obstacle 7, there is no need to worry about the skipping phenomenon and the sprinkling obstacle 7 may not interfere with the sprinkling.

Referring to FIG. 24, when the upward head 1 and the drain valve 4 are installed in consideration of the copper power according to the conventional sprinkler pipe, the ceiling height h1 of FIG. A is the lowest. In addition, in the case of a pipe using a conventional dry pendant head (Fig. B), since there is no fear of freezing, the top-down head 5 can be used, but since the shield plate 5 must be used to prevent the skipping phenomenon, Second lowest. However, in the case of the piping system of the present invention (Figure C), since the open sprinkler head 25 is used, the highest ceiling height (h3) can be secured because the shielding plate is unnecessary without being affected by the skipping phenomenon. Furthermore, because the sprinkler head does not protrude out of the sprinkler fire (7), the aesthetics are also excellent.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

Claims

Branch sprinkler for sprinkler piping with automatic flow control:

Cylindrical branching body 9;

A first outlet 11 formed at one end of the branch body 9 and connected to a pipe of a closed sprinkler head;

An inlet 10 formed in the branch body 9 and connected to a water supply pipe;

A second outlet 12 formed in the branch body 9 and connected to a pipe of an open sprinkler head;

It is disposed in the branch body (9), when the fire occurs in the longitudinal direction of the branch body (9) by the internal fluid pressure difference of the branch body (9) and the first outlet 11 and A piston valve for simultaneously controlling opening and closing of the second outlet 12; And

Inner wall groove portion 18 formed on the inner wall of the branch body 9 between the piston valve and the first outlet 11,

The piston valve may include a main blocking member 14a for shielding the inside of the branch tee adjacent to the first outlet 11 when no fire occurs, and the second outlet 12 connected to the main blocking member when no fire occurs. Branch sprinkler for sprinkler piping including a sub-blocking member (14b) for shielding the inside of the branching adjacent to the.
The method of claim 1,

When the closed sprinkler head is opened at the time of a fire, the piston valve moves toward the first outlet 11 due to the fluid pressure difference in the branching body 9, and the main blocking member 14a is moved to the inner wall. A branch for sprinkler pipe, characterized in that overlapping with the groove portion 18 to form a flow path along the edge of the main blocking member (14a), the sub-blocking member (14b) to open the second outlet (12). tea.
The method of claim 1,

Branch sprinkler for sprinkler piping further comprising a spring (20) disposed between the first outlet (11) and the main blocking member (14a).
The method of claim 1,

Branch sprinkler for sprinkler piping further comprises a micro through hole (16) penetrating through the main blocking member (14a) to balance the pressure in the branch body (9).
The method of claim 1,

The inlet is formed on the other end of the branching body and the second outlet is a sprinkler pipe branching, characterized in that formed at least one side wall of the branching body.
The method of claim 5,

The piston valve has a mini-cylindrical shape, the main blocking member is made of a disk plate shielding the inside of the mini cylinder, the sub-blocking member is a branching tee for sprinkler piping, characterized in that consisting of the side wall of the mini cylinder.
The method of claim 6,

Branching for sprinkler pipe, characterized in that the opening formed in the side wall of the mini cylinder to form a flow path up and down the main blocking member.
The method of claim 1,

The inlet is formed on the side wall of the branching body and the second outlet is a sprinkler pipe branching, characterized in that formed at least one other end of the branching body.
The method of claim 8,

The main blocking member is made of a disk shielding the first outlet, the sub blocking member is a sprinkler piping branch tee, characterized in that made of a disk shielding between the inlet and the second outlet.
The method of claim 9,

A branch tee for sprinkler piping further comprising an additional blocking member connected to the sub blocking member to directly shield the second outlet.
The branching tee of claim 1;

A water supply pipe connected to the inlet of the branch tee;

A closed sprinkler head connected to the first outlet of the branch tee through a pipe; And

An open sprinkler head connected to the second outlet of the branch tee through a pipe;

When the closed sprinkler head is opened at the time of fire, the sprinkler piping system, characterized in that the first outlet and the second outlet opening at the same time due to the fluid pressure difference inside the branch tee.