JPH05317443A - Sprinkler fire extinguishing equipment - Google Patents

Abstract

PURPOSE:To make it possible to pass an accurate judgment whether water reaches the sprinkler head by providing, on a part adjacent to the sprinkler head in a sprinkler piping or on a sprinkler head, a color changing section wherein color changes in accordance with the change in temperature resulting from the water supply. CONSTITUTION:On a socket 1B of a sprinkler head 1, a heater 8A radiating heat by reacting with water is provided in such a manner that the fluid movement is not prevented inside the socket 1B. On the lower surface of the head main body 1A, a part whose color changes in accordance with a rise in temperature of the head main body 1A is provided closely to the ceiling. This constitution allows accurate judgment whether water reaches the sprinkler head, thereby improving the reliability of fire extinguishing capabilities.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler fire extinguishing system comprising a sprinkler head and water supply sprinkler piping connected to the sprinkler head.

[0002]

2. Description of the Related Art Conventionally, whether or not water is filled in a sprinkler pipe without leaking is detected by detecting the pressure in a water supply pipe that distributes and supplies water to an unwind pipe connected to each sprinkler head of the sprinkler pipes. Had to judge.

[0003]

For example, in a pipe structure in which a branch hole is formed in a side surface of a water supply pipe of a sprinkler pipe and the unwind pipe is welded so as to communicate with each other through the branch hole, the unwind pipe is used. Is connected to the water supply pipe, even if the formation of the branch hole for the water supply pipe is forgotten, it is impossible to find out by visual observation from the outside. As is clear from this, it cannot be said that the sprinkler equipment has no blockage of the sprinkler piping. If such a pipe is blocked, water will not come out even if the sprinkler head is heat-sensitized when a fire occurs, which is extremely dangerous. However, in the above conventional technology, if there is water leak from the sprinkler pipe, it can be reliably detected by a decrease in the pipe pressure, but if there is no water leak, the pipe pressure with and without pipe blockage is the same. However, since it is not possible to make a distinction, it cannot be used to judge whether or not there is a blockage of the pipe, and it cannot be guaranteed that the water reaches each sprinkler head. An object of the present invention is to make it possible to accurately determine whether or not water has reached the sprinkler head.

[0004]

The feature of the sprinkler fire extinguishing equipment according to the first aspect of the present invention is that the sprinkler piping has a portion near the sprinkler head or a sprinkler head, and the sprinkler piping or the sprinkler piping accompanying water supply into the sprinkler head is provided. The point is that the discolored portion in which the hue changes due to the temperature change of the sprinkler head is provided so as to be exposed to the outside.

The sprinkler fire extinguishing equipment according to the second invention of the present invention is characterized in that, in the first invention, a portion of the sprinkler pipe near the sprinkler head or a sprinkler head is internally provided with a heating element which reacts with water to generate heat. The color change portion is provided with a portion whose hue changes due to temperature rise.

The sprinkler fire extinguishing equipment according to the third aspect of the present invention is characterized in that, in the first aspect of the present invention, a portion of the sprinkler pipe near the sprinkler head or a sprinkler head is internally equipped with a heat absorber that absorbs heat by reacting with water. The color-changed portion is provided with a portion whose hue changes as the temperature decreases.

The sprinkler fire extinguishing equipment according to the fourth aspect of the present invention is characterized in that, in the first to third aspects, the discolored portion is arranged so as to face under the ceiling.

[0008]

According to the first aspect of the present invention, when water reaches the sprinkler head while the sprinkler pipe is filled with water, the discolored portion is caused by the temperature change of the sprinkler pipe and the sprinkler head due to the filling of the water. If the water discolors and the water does not reach the sprinkler head, there is no temperature change and the discolored part does not discolor.Therefore, by visually observing whether the discolored part has discolored or not, it is possible to check whether the water has reached the sprinkler head. I can judge.

According to the second aspect of the present invention, since the heating element reacts with water to generate heat, the amount of temperature change can be increased.
The discolored portion can be surely changed in color. Similarly, also in the case of the third aspect of the invention, since the temperature change amount can be increased by the reaction of the heat absorber with water, the discoloration of the discolored portion can be reliably performed.

According to the fourth aspect of the invention, since the discolored portion is exposed under the ceiling, the inspection can be performed after the ceiling is constructed.

[0011]

As described above, according to the present invention, it is possible to reliably judge whether or not water has reached the sprinkler head, and it is possible to improve the reliability of the fire extinguishing performance. In particular, according to the fourth aspect, it is possible to make the above determination with excellent workability without hindering the setup of the ceiling construction.

[0012]

【Example】

[Example 1] In a sprinkler fire extinguishing facility, as shown in Fig. 1, the sprinkler head 1 is arranged so as to face under the ceiling through a sprinkler installation hole a formed in a ceiling finishing material A, and the sprinkler head 1 is attached to the sprinkler head 1. The water supply sprinkler pipe 2 to be connected is arranged in the back of the ceiling. In addition, although one sprinkler head 1 is shown in the drawing, the sprinkler heads 1 are dispersedly arranged on the ceiling. The sprinkler head 1 is
As shown in FIG. 2, the head body 1A and the socket 1B for connecting to the sprinkler pipe 2 are provided. The sprinkler pipe 2 has a vertically extending unwinding pipe 3 to which the sprinkler head 1 is connected at a lower end thereof, and a water supply pipe which distributes water to the unwinding pipe 3 for each of the sprinkler heads 1 in a horizontal posture above the ceiling. 4, and water supply pipe 4
As shown in FIG. 1, the connection structure of the unwinding pipe 3 to the water supply pipe 4 has a branch hole 5 formed on the side surface of the water supply pipe 4, and the upper end portion of the unwinding pipe 3 is formed on the side surface of the water supply pipe 4. It is configured to be fixed by welding in a state of communicating with the branch hole 5. The means for connecting the sprinkler head 1 to the lower end of the unwinding tube 3 is
This is means for connecting the socket 1B to the lower end of the unwinding tube 3 by screwing. Moreover, the unwinding pipe 3 is held on the ceiling base B via the clip 6. Reference numeral 7 is a decorative cap that closes the gap between the ceiling finishing material A and the sprinkler head 1. Then, this sprinkler fire extinguishing equipment has a water detecting means for detecting whether or not water has reached each sprinkler head 1 in a state where the sprinkler pipe 2 is filled with water.

As shown in FIGS. 1 and 2, the water detecting means has a heating element 8A which reacts with water and generates heat in the socket 1B of the sprinkler head 1 to prevent the flow of water in the socket 1B. The interior of the head body 1A
On the lower surface of the head main body 1A, there is provided a discolored portion 9 whose hue changes with the temperature rise of the head main body 1A so as to face under the ceiling. That is, it is configured to display whether or not water has reached the sprinkler head 1, depending on whether or not the discolored portion 9 has changed color. Of course, the head body 1A
Is made of a heat conductive material such as metal, and the heat generation temperature of the heating element 8A is equal to or lower than the operating temperature of the sprinkler head 1. The discolored portion 9 is composed of a fusible pigment, and is an irreversible one that does not return to its original color even if the temperature drops once the temperature changes above a set temperature, but is reversible. It may be one. Specifically, it is configured by sticking products commercialized as labels, sheets, or tapes to the discolored portion forming part, or applying products commercialized as paints and crayons to the discolored portion forming part. There is. Specific examples of commercialized products include those manufactured by NOF Giken Kogyo Co., Ltd. whose trade names are thermolabel, thermotape, thermosheet, thermopaint and thermocrayon.

[Embodiment 2] In the sprinkler fire extinguishing equipment shown in the above Embodiment 1, the water detecting means is constructed as follows. As shown in FIG. 3, in the one in which the sprinkler head 1 is connected to the lower end portion of the unwinding pipe 3 via the joint 10, the heating element 8A is connected to the joint 1
Install in 0. The other configurations are similar to those of the first embodiment, and thus the description thereof is omitted. [Embodiment 3] In the above Embodiment 1, instead of the heating element 8A, an endothermic body 8B that absorbs heat by reacting with water is provided, and as the discolored portion 9, a discolored one is provided. The discolored portion 9 has the same configuration as that of the first embodiment. [Example 4] In Example 2, in place of the heating element 8A, an endothermic body 8B that absorbs heat by reacting with water is provided, and as the discolored portion 9, a discolored portion that is discolored by cooling similarly to the third embodiment is provided. It is a thing.

[Other Embodiment] In the above embodiment, as shown in FIG. 4, of the unwinding pipe 2, the sprinkler head 1 is used.
The heating element 8A and the heat absorbing element 8B are installed in a portion close to The discolored portion 9 is provided on the sprinkler pipe 2 for implementation. The discolored portion 9 may be any material as long as it discolors due to a temperature change, and its material and property are not limited. Further, in the above-described embodiment, by providing the heating element 8A and the heat absorbing element 8B to increase the temperature difference between the case where water reaches the sprinkler head 1 and the case where water does not reach the sprinkler head 1, the discoloration of the discolored portion 9 is prevented. If the discolored portion 9 is discolored due to the difference in temperature between with and without water, the heating element 8 is used.
It can be implemented without providing A or the heat absorber 8B.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a side view of a notched part of a main portion showing a first embodiment.

FIG. 2 is an enlarged vertical cross-sectional view of a main part showing the first embodiment.

FIG. 3 is a vertical cross-sectional view of a main part showing a second embodiment.

FIG. 4 is a vertical cross-sectional view of a main part showing another embodiment.

[Explanation of symbols]

 1 Sprinkler head 2 Sprinkler piping 8A Heating element 8B Endotherm 9 Discolored part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akiharu Sakaguchi 4-1-1-13 Honmachi, Chuo-ku, Osaka-shi, Osaka Prefecture Takenaka Corporation, Osaka Main Store (72) Inventor Kazuo Asada, Honcho, Chuo-ku, Osaka-shi, Osaka 4-1-13-1 Takenaka Corporation Osaka Main Store (72) Inventor Akira Nakamori 4-1-13-1 Honmachi, Chuo-ku, Osaka City, Osaka Prefecture Takenaka Corporation Osaka Main Store

Claims (4)

[Claims] 1. A sprinkler fire extinguishing facility comprising a sprinkler head (1) and a water supply sprinkler pipe (2) connected to the sprinkler head (1), wherein a part of the sprinkler pipe (2) close to the sprinkler head (1) or a sprinkler. The head (1) is provided with a sprinkler pipe (2) accompanying the water supply to the sprinkler head (1) or a discolored portion (9) whose hue changes due to a temperature change of the sprinkler head (1) exposed to the outside. Sprinkler fire extinguishing equipment. 2. A heating element (8) which reacts with water to generate heat in a portion of the sprinkler pipe (2) near the sprinkler head (1) or in the sprinkler head (1).
The sprinkler fire extinguishing system according to claim 1, wherein the sprinkler fire extinguishing equipment is provided by internally providing A), and the discolored portion (9) is provided with a hue that changes due to temperature rise. 3. A heat absorber (8) which absorbs heat by reacting with water at a location near the sprinkler head (1) of the sprinkler pipe (2) or at the sprinkler head (1).
The sprinkler fire extinguisher equipment according to claim 1, wherein the sprinkler fire extinguishing equipment is provided by internally incorporating B), and the discolored portion (9) is provided with a hue that changes due to temperature decrease. 4. The sprinkler fire extinguishing equipment according to claim 1, 2 or 3, wherein the discolored portion (9) is arranged so as to face under the ceiling.