KR200498305Y1 - multi-drain detecting apparatus of pipe for sprinkler facilities - Google Patents

Abstract

A multi-drain inspection device for a sprinkler system pipe according to the present invention is characterized by including: a drain pipe connected to one side of a fire water supply pipe connected to an upper portion of a water flow detection valve and extending downward; a high-pressure nipple horizontally connected to one side of the water flow detection valve; a drain valve housing connected to a lower portion of the drain pipe and one side of the high-pressure nipple; an operating handle provided on the outside of the drain valve housing; and a three-way valve ball provided on the inside of the drain valve housing and connected to the operating handle to selectively perform a test for abnormality in the flow of fire water flowing along the fire water supply pipe and branch pipes and to open and close a fire water drain according to the operation of the operating handle.
Accordingly, by connecting a water flow detection valve installed on a fire water supply pipe that supplies fire water to a sprinkler together with the fire water supply pipe, unlike the conventional fire water supply pipe connected to the water flow detection valve, a branch pipe connected to the fire water supply pipe and equipped with a sprinkler, and a terminal extension pipe connected to the branch pipe, a terminal extension pipe can be omitted, allowing construction with a simple piping structure, and a multi-drain inspection device for sprinkler equipment piping can be provided, which can easily and selectively perform a test for abnormality in the fire water flow and open/close the fire water drain according to the operation of an operating handle.

Description

{multi-drain detecting apparatus of pipe for sprinkler facilities}

The present invention relates to a multi-drain inspection device for piping for sprinkler equipment, and more specifically, to a multi-drain inspection device for piping for sprinkler equipment, which is connected together with a water flow detection valve installed on a fire water supply pipe that supplies fire water to a sprinkler and the fire water supply pipe, so that, unlike the conventional method in which a drain valve is connected to a fire water supply pipe connected to a water flow detection valve, a branch pipe connected to the fire water supply pipe and equipped with a sprinkler, and a terminal extension pipe connected to the branch pipe, the terminal extension pipe is omitted, thereby enabling construction with a simple piping structure, and which enables a test for abnormality in the fire water flow and the opening and closing of the fire water drain to be easily and selectively performed by operating an operating handle.

The pipe connection for the sprinkler installation is based on a three-way branch pipe that is connected to the end of the sprinkler supply pipe at the top, is combined with the drain valve of the water flow detection valve at the side, and has a path for delivering the water discharged from these connecting pipes to the drain pipe at the bottom.

The conventional pipe connector is connected to the end of the sprinkler supply pipe and is equipped with a check valve, but it is fixedly connected to the drain pipe, making it impossible to test the water flow rate. Therefore, it is impossible to test the water flow rate without dismantling the pipe.

In addition, in order to install an overpressure relief valve in a pipeline with a conventional pipe connector, the pressure gauge installed in the pipe extended to one side of the water flow detection valve must be removed, the overpressure relief valve must be installed here, and a very long connecting hose must be installed to connect to the pipe connector located on the opposite side to drain the overpressured fire extinguishing water discharged here, resulting in a very inefficient structure.

This conventional method causes structural problems such as the installation of another long hose in a very narrow space where the water flow detection valve is installed and the surrounding environment is very crowded with various pipes and electric wires, making the narrow space very complicated and obscuring the view. In addition, there is always a problem with the discharge function due to the problem of the hose folding, and it provides many inconveniences and obstacles in construction or quality control. In terms of cost, it is a structure that has a significant cost increase factor as it is a structure that embeds the hose inside a mesh with stainless steel wire and fastens metal connectors at both ends. At the same time, it requires an additional installation process and labor for this conventional overpressure prevention valve, and since it undergoes a performance test with a pressure gauge attached before shipment, it must be disassembled and attached at the construction site, and then the pressure gauge must be attached again, requiring a multi-step additional process, which is inconvenient.

An example of a drain valve for a piping system for a sprinkler system according to the prior art is disclosed in Republic of Korea Utility Model Registration No. 20-0414294 (registered on April 12, 2006, hereinafter referred to as “Patent Document 1”).

Meanwhile, as shown in FIG. 1, a drain valve (10) of a pipe for sprinkler installation according to the prior art is connected to one side of a water flow detection valve (20), a fire water supply pipe (30) is connected to the upper portion of the water flow detection valve (20), a branch pipe (50) equipped with a sprinkler (40) is connected to the fire water supply pipe (30), and a terminal extension pipe (60) connected to the drain valve (10) is connected to the end of the branch pipe (50), so that a firefighter can check whether there is an abnormality in the fire water flow discharged to the drain valve (10) through the fire water supply pipe (30), the branch pipe (50), and the terminal extension pipe (60) while the fire water flow from the water flow detection valve (20) to the drain valve (10) is blocked.

At this time, the drain valve (10) is equipped with a sight glass so that the flow of fire water can be visually checked from the outside.

However, according to the drain valve (10) according to the prior art, there is a problem in that the pipe structure becomes complicated because an additional terminal extension pipe (60) must be constructed, and the construction and material costs of the pipe and the time required for construction may increase.

Republic of Korea Utility Model Registration No. 20-0414294 (registered on April 12, 2006)

The present invention has been made to solve the above problems, and the purpose of the present invention is to provide a multi-drain inspection device for piping for sprinkler equipment, which enables construction with a simple piping structure by omitting the terminal extension pipe, unlike the conventional method in which a water flow detection valve installed on a fire water supply pipe that supplies fire water to a sprinkler is connected to the fire water supply pipe together with the fire water supply pipe, a branch pipe connected to the fire water supply pipe and equipped with a sprinkler, and a terminal extension pipe connected to the branch pipe, and which enables a test for abnormality in the fire water flow and selectively and easily opening and closing the fire water drain according to the operation of an operating handle.

In order to achieve the above object, the multi-drain inspection device for a sprinkler system pipe according to the present invention is characterized by including: a drain pipe connected to one side of a fire water supply pipe connected to the upper part of a water flow detection valve and extending downward; a high-pressure nipple horizontally connected to one side of the water flow detection valve; a drain valve housing connected to the lower part of the drain pipe and one side of the high-pressure nipple; an operating handle provided on the outside of the drain valve housing; and, a three-way valve ball provided on the inside of the drain valve housing and connected to the operating handle to selectively perform a test for abnormality in the flow of fire water flowing along the fire water supply pipe and branch pipes and to open and close a fire water drain according to the operation of the operating handle.

Here, it is preferable that the three-way valve ball is provided so that fire water flows from the drain pipe to the lower part of the drain valve housing while the fire water inlet and the fire water outlet are arranged vertically to each other, and to test whether there is an abnormality in the fire water flow along the fire water supply pipe and branch pipe.

In addition, it is preferable that an overpressure discharge pipe is provided on one side of the drain valve housing, an overpressure prevention unit is provided on the overpressure discharge pipe to prevent the flow pressure of the fire water from exceeding the set pressure, and a test pressure gauge that indicates the flow pressure of the fire water is provided on the upper portion of the overpressure prevention unit.

According to the present invention, by connecting a water flow detection valve installed on a fire water supply pipe that supplies fire water to a sprinkler together with the fire water supply pipe, unlike the conventional fire water supply pipe connected to the water flow detection valve, a branch pipe connected to the fire water supply pipe and equipped with a sprinkler, and a terminal extension pipe connected to the branch pipe, a terminal extension pipe can be omitted, thereby enabling construction with a simple piping structure, and a multi-drain inspection device for piping for sprinkler equipment can be provided, which can easily and selectively perform a test for abnormality in the fire water flow and the opening and closing of the fire water drain according to the operation of an operating handle.

Figure 1 is a drawing showing a drain valve and piping structure of a piping system for sprinkler equipment according to the prior art.
Figure 2 is a perspective view of a multi-drain inspection device for a sprinkler system pipe according to the present invention.
Figure 3 is an exploded perspective view of the multi-drain inspection device for the sprinkler system piping of Figure 2.
Figure 4 is a side view showing a disassembled state of a multi-drain inspection device for a sprinkler system pipe according to the present invention.
Figure 5 is a perspective view of a multi-drain inspection device for a sprinkler system pipe according to the present invention from another angle.
Figure 6 is a cross-sectional side view showing a state in which the flow of fire water toward the multi-drain inspection device of Figure 5 is blocked.
Fig. 7 is a cross-sectional view showing a state in which the abnormality of fire water flow is tested through the multi-drain inspection device of Fig. 6.
Fig. 8 is a cross-sectional view showing a state in which a firefighter's drain is opened through the multi-drain inspection device of Fig. 6.
FIG. 9 is a drawing showing an example of a simple pipe structure constructed by omitting the conventional terminal extension pipe through a multi-drain inspection device for a sprinkler system pipe according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the attached drawings.

The multi-drain inspection device for a sprinkler system pipe according to the present invention, as shown in FIGS. 2 to 5, comprises: a drain pipe (100) connected to one side of a fire water supply pipe (30) connected to the upper part of a water flow detection valve (20) and extending downward; a high-pressure nipple (200) horizontally connected to one side of the water flow detection valve (20); a drain valve housing (300) connected to the lower part of the drain pipe (100) and one side of the high-pressure nipple (200); an operating handle (400) provided on the outside of the drain valve housing (300); and a three-way valve provided on the inside of the drain valve housing (300) and connected to the operating handle (400) to selectively perform a test for abnormalities in the fire water flow along the fire water supply pipe (30) and branch pipes (50) and to open and close the fire water drain according to the operation of the operating handle (400). Includes balls (500).

Accordingly, as illustrated in FIG. 9, by connecting the water flow detection valve (20) provided on the fire water supply pipe (30) that supplies fire water to the sprinkler (40) together with the fire water supply pipe (30), unlike the conventional method in which the drain valve is connected to the fire water supply pipe (30) connected to the water flow detection valve, the branch pipe (50) connected to the fire water supply pipe (30) and equipped with the sprinkler (40), and the terminal extension pipe (60) connected to the branch pipe (50), the terminal extension pipe (60) can be omitted, thereby enabling construction with a simple piping structure, and allowing a test for abnormality in the fire water flow and selectively and easily opening and closing of the fire water drain by operating the operating handle (400) can be provided.

In addition, according to the multi-drain inspection device for sprinkler system piping according to the present invention, by applying only one 3-way valve ball (500), the structure is simplified compared to the conventional case where two separate operating handles were provided, thereby reducing the manufacturing cost and reducing the maintenance and management cost.

The drain pipe (100), as shown in FIGS. 2 and 3, includes an elbow bend pipe part that is curved in the middle in a horizontal portion and extends downward in a vertical portion, and is connected to the upper portion of the drain valve housing (300) by a union fastening part (110).

The union fastener (110) includes parts such as a nipple, a union nut, and a union packing.

The high-pressure nipple (200) is connected to the water flow detection valve (20) and the drain valve housing (300) so that it can sufficiently withstand high pressure water flowing directly from the water flow detection valve (20) to the drain valve housing (300), as shown in FIGS. 2 and 3.

As shown in Fig. 4, the drain valve housing (300) is provided with a sight glass (310) so that the flow of fire water can be visually observed from the outside.

At this time, it is desirable to provide an orifice path with a reduced diameter (inner diameter of approximately 11.2 mm) to check the flow rate of fire water inside the drain valve housing (300).

In addition, as shown in FIG. 3 and FIG. 5, an overpressure discharge pipe (320) is provided on one side of the drain valve housing (300), an overpressure prevention unit (330) is provided on the overpressure discharge pipe (320) to prevent the flow pressure of the fire water from exceeding the set pressure, and a test pressure gauge (340) that indicates the flow pressure of the fire water is preferably provided on the upper portion of the overpressure prevention unit (330).

Accordingly, if excessive pressure is applied when fire water flows into the drain valve housing (300), this can be easily detected visually using the test pressure gauge (340) and the excess pressure can be discharged, thereby preventing damage or breakage of the device.

Here, it is preferable that the overpressure discharge pipe (320) be formed in a ‘ㄷ’ shape and be connected to the drain valve housing (300) on one side and the overpressure prevention unit (330) on the other side.

In addition, it is preferable that the overpressure prevention unit (330) be equipped with a needle valve for overpressure prevention opening and closing.

The three-way valve ball (500) is preferably provided to allow fire water to flow vertically from the drain pipe (100) to the lower part of the drain valve housing (300) while the fire water inlet (510) and the fire water outlet (520) are arranged vertically to each other as shown in FIG. 7, and to test for abnormalities in the fire water flow along the fire water supply pipe (30) and the branch pipe (50).

At this time, the orifice euro can be provided inside the three-way valve ball (500).

Accordingly, when testing for abnormalities in the flow of fire water without the conventional terminal extension pipe (60), fire water is directly introduced from the water flow detection valve (20) to the multi-drain inspection device by operating the three-way valve ball (500), so that testing for abnormalities in the flow of fire water can be easily and conveniently performed.

FIG. 6 is a side cross-sectional view illustrating a state in which the flow of fire water toward the multi-drain inspection device according to the present invention is blocked, FIG. 7 is a side cross-sectional view illustrating a state in which the presence or absence of an abnormality in the flow of fire water is tested through the multi-drain inspection device of FIG. 6, and FIG. 8 is a side cross-sectional view illustrating a state in which the drain of fire water is opened through the multi-drain inspection device of FIG. 6.

As an embodiment of the present invention, it is preferable that the fire water outlet hole (520) of the three-way valve ball (500) be formed in a form in which the inner diameter is gradually expanded so that the final opening diameter is expanded to 2 to 2.5 times larger than the opening diameter of the fire water inlet hole (510) compared to the fire water inlet hole (510).

Accordingly, when fire water flows into the drain valve housing (300), the low pressure formed on the side of the fire water outlet (520) allows the fire water to flow more smoothly and be discharged through the fire water inlet (510) and the fire water outlet (520).

Here, if the final opening diameter of the fire water outlet (520) is less than twice the opening diameter of the fire water inlet (510), the pressure difference will decrease, which may hinder the smooth discharge of fire water, and if it exceeds 2.5 times, the pressure difference will become too large, causing the flow velocity of fire water to become too fast, making it difficult to check for abnormalities in the flow of fire water through the sight glass (310). Therefore, it is preferable that the final opening diameter of the fire water outlet (520) be formed to be 2 to 2.5 times larger than the opening diameter of the fire water inlet (510).

Although the present invention has been described in detail only with respect to the described specific embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made within the technical scope of the present invention, and it is a matter of course that such modifications and variations fall within the scope of the attached utility model registration claims.

100 : Drain pipe 110 : Union joint
200 : High pressure nipple 300 : Drain valve housing
310 : Sight glass 320 : Overpressure relief pipe
330: Overpressure protection unit 340: Test pressure gauge
400 : Operating handle 500 : 3-way valve ball
510: Fire water inlet 520: Fire water outlet

Claims (3)

A drain pipe (100) connected to one side of a fire water supply pipe (30) connected to the upper part of a water flow detection valve (20) and extended downward;
A high-pressure nipple (200) connected horizontally to one side of the above-mentioned water pressure detection valve (20);
A drain valve housing (300) connected to the lower portion of the above drain pipe (100) and one side of the above high-pressure nipple (200);
An operating handle (400) provided on the outside of the above drain valve housing (300); and
A three-way valve ball (500) provided inside the drain valve housing (300) and connected to the operating handle (400) to selectively perform a test for abnormality in the flow of fire water flowing along the fire water supply pipe (30) and branch pipe (50) and to open and close the fire water drain according to the operation of the operating handle (400);
Including,
The above three-way valve ball (500) is provided to allow fire water to flow from the drain pipe (100) to the lower part of the drain valve housing (300) while the fire water inlet (510) and the fire water outlet (520) are arranged vertically to each other, and to test whether there is an abnormality in the fire water flow along the fire water supply pipe (30) and the branch pipe (50).
An overpressure discharge pipe (320) is provided on one side of the above drain valve housing (300).
The above overpressure discharge pipe (320) is equipped with an overpressure prevention unit (330) that prevents the flow pressure of the firefighter from exceeding the set pressure.
A test pressure gauge (340) that indicates the flow pressure of the fire water is provided on the upper part of the above overpressure prevention unit (330).
The above drain valve housing (300) is equipped with a sight glass (310) to visually check the flow of fire water from the outside.
An orifice flow path is provided inside the above three-way valve ball (500).
A multi-drain inspection device for piping for sprinkler systems, characterized in that the fire water outlet hole (520) of the above three-way valve ball (500) is formed in a form in which the inner diameter is gradually expanded so that the final opening diameter is expanded to 2 to 2.5 times larger than the opening diameter of the fire water inlet hole (510) compared to the fire water inlet hole (510).

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