JP2014140418A - Sprinkler fire-extinguishing equipment and fire-extinguishing container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide sprinkler fire-extinguishing equipment and the like capable of sprinkling a fire extinguishing solution suitably with a simple configuration.SOLUTION: In sprinkler fire-extinguishing equipment 1, at the time of fire breakout based on a received signal from a sensor 3 which senses at least one of heat and smoke, a sprinkler 2 sprinkles water which is supplied from a distributing pipe 9 through a pipeline 4 by driving a solenoid valve 5 which intercepts a water supply route from the distributing pipe 9 filled with water to the pipeline 4 communicating with the sprinkler 2 in such a manner that the water supply route is opened. In such a configuration, a fire-extinguishing container 6 is provided which is attached to the lower surface side of the pipeline 4 and which accommodates a fire-extinguishing liquid. This fire-extinguishing container 6 has a thin tube 13 whose lower end is arranged in the fire-extinguishing liquid, and whose upper end is arranged in the pipeline 4. Then, the thin tube 13 is formed in such a manner that negative pressure generates due to a Venturi effect when water flows in the pipeline 4 from the distributing pipe 9, the fire-extinguishing liquid is sucked from the upper end and the fire-extinguishing liquid can be supplied to the pipeline 4.

Description

  The present invention relates to a sprinkler fire extinguishing facility and a fire extinguishing container that spray water when a fire occurs.

  Conventionally, when heat or smoke that causes fire is detected by a sensor, a water supply path is opened by driving an electromagnetic valve provided between the water pipe and the pipe, so that the sprinkler supplied through the pipe is Sprinkler fire extinguishing equipment that sprinkles water is known.

  In this kind of sprinkler fire extinguishing equipment, in order to improve the fire extinguishing performance etc., instead of simply sprinkling tap water from the sprinkler, a chemical solution (hereinafter referred to as “fire extinguishing liquid”) having an action to suppress the reaction of combustion, etc. Watering a solution diluted with tap water (hereinafter referred to as “fire-extinguishing aqueous solution”) has been studied.

  In contrast, in the sprinkler fire extinguishing equipment, the applicant of the present application communicates the tank containing the fire-extinguishing aqueous solution (first tank) to the sprinkler side piping and the empty tank (second tank) to the solenoid valve side piping. When the water supply path is opened by driving the solenoid valve, water pressure is applied in the direction in which the second tank supplied through the pipe crushes the first tank, and the fire extinguishing aqueous solution from the crushed second tank Has been proposed (for example, see Patent Document 1).

Utility Model Registration No. 3139295

  However, in the sprinkler fire extinguishing equipment described in Patent Document 1, it is necessary to store in the first tank a fire extinguishing aqueous solution whose weight has been increased by diluting the fire extinguishing liquid in advance. There is a problem that it is difficult to secure the installation space due to an increase in the load and the large volumes of the first tank and the second tank.

  This invention is made | formed in view of the said problem, and aims at provision of the sprinkler fire extinguishing equipment and fire extinguishing container which can spray a fire-extinguishing aqueous solution suitably with a simple structure.

  In order to achieve the above object, the present invention provides water supply from a filled water distribution pipe to a pipe communicating with a sprinkler in the event of a fire based on a received signal from a sensor that senses at least one of heat and smoke. This is a sprinkler fire extinguishing facility in which a sprinkler supplied with water from a water distribution pipe is sprinkled by driving an electromagnetic valve that shields the path so that the water supply path is opened.

  In the present invention, in such a sprinkler fire extinguishing equipment, a fire extinguishing container that contains a fire extinguishing liquid is attached to the lower surface side of the pipe. The fire extinguishing container is provided with a narrow tube having a lower end disposed in the fire extinguishing liquid and an upper end disposed in the pipe, and this narrow pipe has a venturi effect when water flows into the pipe from the water distribution pipe. Thus, a negative pressure is generated, the extinguishing liquid is sucked up from the upper end, and the extinguishing liquid can be supplied into the pipe.

  In such a configuration, when the heat and smoke that cause the fire are detected by the sensor, the water supply path is opened by driving an electromagnetic valve provided between the water pipe and the pipe. When water flows in, the fire extinguishing liquid in the fire extinguishing vessel is sucked up into the narrow pipe in proportion to the force of the water flow, and the fire extinguishing liquid supplied into the pipe is mixed with water, so that the fire extinguishing liquid is diluted (extinguishing fire) Aqueous solution) is supplied to the sprinkler.

  Therefore, according to the present invention, a fire-extinguishing container that contains a fire-extinguishing liquid is attached, and when a water supply path is opened by driving a solenoid valve, a structure that creates a fire-extinguishing aqueous solution by using the force of water flowing in the pipe. Therefore, it becomes possible to suppress the volume of the fire-extinguishing container and the weight of the fire-extinguishing liquid. As a result, the fire-extinguishing aqueous solution can be suitably sprayed with a simple configuration.

  In addition, in this invention, it is preferable that the thin tube is arrange | positioned so that the opening part of an upper end may face the sprinkler side in piping. In such a configuration, it is possible to supply the fire-extinguishing liquid into the pipe through the narrow pipe without countering the force of the water flowing in the pipe, so that a fire-extinguishing aqueous solution can be more suitably created.

  Specifically, in the present invention, the narrow tube is preferably formed in an L shape. In such a configuration, depending on the length of the thin tube, the total resistance received when the fire extinguishing liquid is sucked into the thin tube increases. Therefore, the degree of freedom in which the length of the thin tube can be adjusted increases, and the fire extinguishing is performed at a desired ratio. It becomes easy to adjust so that the liquid is mixed with water.

  By the way, the larger the portion of the cross section perpendicular to the water flow direction that is blocked by the narrow pipe in the pipe, the lower the pressure due to Bernoulli's theorem, and the negative pressure in the pipe tends to become negative. The proportion (amount and speed) of fire extinguishing liquid to be increased.

  For this reason, if the narrow pipe is formed so that the pipe diameter becomes large in the pipe, the fire extinguishing liquid can be supplied to the pipe in a large ratio. On the other hand, when it is desired to reduce the proportion of the fire extinguishing liquid supplied into the pipe, it is preferable that the pipe diameter is constant, for example.

  However, when the pipe diameter is constant, the ratio (amount and speed) of water flowing into the pipe is estimated from the inner diameter of the pipe, for example. In addition, it is preferable that the opening at the upper end of the narrow tube is cut obliquely. In such a configuration, since the cross-sectional area of the opening at the upper end of the thin tube is larger than before cutting, the pressure in the opening is larger than the surrounding area in the pipe, and the fire extinguishing liquid is supplied from the opening to the pipe. It becomes easy to flow. Therefore, according to such a configuration, it is possible to easily finely adjust the ratio of the fire extinguishing liquid supplied into the pipe through the thin pipe without changing the pipe diameter.

  In the present invention, the fire-extinguishing container may have an opening attached to the pipe so that water flows in from the pipe and the fire-extinguishing liquid is pressed down. In this case, the water supply path is opened by driving a solenoid valve provided between the water distribution pipe and the pipe, so that when water flows from the pipe into the fire extinguisher, the fire extinguishing liquid is pushed down, The liquid is easily supplied into the pipe through the thin pipe.

  In the present invention, a fire extinguishing container may be distributed on the market alone. Specifically, the present invention is a fire extinguishing container that is attached to the lower surface side of a pipe at least in a sprinkler fire extinguishing equipment and contains a fire extinguishing liquid, and has a lower end disposed in the fire extinguishing liquid, and an upper part in the pipe. It has a narrow tube with an end, and the shape of this narrow tube is that when water flows into the pipe from the water distribution pipe, negative pressure is generated due to the venturi effect, the fire extinguishing liquid is sucked up from the upper end, and the fire extinguishing liquid is drawn into the pipe. What is necessary is just to be comprised so that supply is possible. According to such a structure, the effect similar to the effect mentioned above can be acquired by attaching to a sprinkler fire extinguishing equipment.

It is a block diagram which illustrates the whole structure of a sprinkler fire extinguishing equipment. It is an image figure which illustrates the structure of a fire extinguishing container. It is explanatory drawing which illustrates operation | movement of a sprinkler fire extinguishing equipment.

Embodiments of the present invention will be described below with reference to the drawings.
<Overall configuration>
As shown in FIG. 1, the sprinkler fire extinguishing equipment 1 of this embodiment includes a sprinkler 2 and a sensor 3 installed on the ceiling of a living room indoors, a pipe 4 installed on the back of the ceiling, and a solenoid valve 5. And a fire extinguishing container 6, a fire receiver 7 that receives a fire signal output from the sensor 3, and a solenoid valve control panel 8 that controls the drive of the solenoid valve 5.

  When detecting at least one of heat and smoke, the sensor 3 is a sensor that outputs a fire signal indicating that. For example, in the type that senses heat, the internal heat-sensitive part is activated when the temperature rises above a predetermined temperature or at a rate of temperature rise due to the heat of the fire. As this heat-sensitive part, for example, metal plates having different thermal expansion coefficients are bonded together, and when receiving heat, a metal plate having a high expansion coefficient bends outward, and a metal having a low expansion coefficient bends inward (contact surface side). There are some which output an electrical signal when bending at a predetermined temperature. In addition, the type that senses smoke includes one that detects changes in the ionization state of air due to fire smoke and one that detects diffuse reflection or light shielding of light.

  The fire receiver 7 is connected to the sensor 3, and when a fire signal output from the sensor 3 is received (input), a fire light (not shown) is turned on, a buzzer is sounded, and a solenoid valve is operated. An operation signal is output to the control panel 8. In addition, the fire receiver 7 is provided with an operation panel and switches for the user to operate. For example, when the fire is extinguished, these operations turn off the fire light and stop the buzzer. At this time, a release signal is output to the solenoid valve control panel 8.

  The solenoid valve control panel 8 is connected to the fire receiver 7 and outputs an opening drive signal for opening the solenoid valve 5 when receiving (input) at least the operation signal output from the fire receiver 7. When a release signal output from the fire receiver 7 is received (input), a closing drive signal for closing the solenoid valve 5 is output.

  The solenoid valve 5 is connected to the solenoid valve control panel 8 and opens and closes the valve by moving an iron piece called a plunger using the magnetic force of the solenoid in accordance with a drive signal output from the solenoid valve control panel 8. It is. Specifically, the solenoid valve 5 is provided between the water distribution pipe 9 and the pipe 4, and the valve is fully closed so as to shield the water supply path that communicates from the water distribution pipe 9 to the pipe 4 in normal times. In the event of a fire in which an open drive signal is input from the electromagnetic valve control panel 8, the valve is fully opened so as to open the water supply path. The solenoid valve 5 is configured such that when the closing drive signal is input from the solenoid valve control panel 8, the valve is again fully closed (returns to a normal state).

  The water distribution pipe 9 is filled with tap water supplied from a water source (not shown), and is normally filled with tap water pressurized in the direction of the solenoid valve 5. When the water supply path is opened by driving 5, pressurized tap water (hereinafter referred to as “pressure water”) is supplied into the pipe 4. In addition, the water distribution pipe 9 may be connected to a pressurized water supply device (not shown) for supplying pressure water.

  The pipe 4 is installed for the purpose of supplying pressure water flowing from the water distribution pipe 9 to the sprinkler 2, and a water stop valve 10 for stopping the pressure water is provided at the tip. Further, in the pipe 4, when a fire extinguishing liquid is supplied from a fire extinguishing container 6 to be described later, an aqueous solution (hereinafter referred to as “extinguishing aqueous solution”) in which the fire extinguishing liquid and the pressure water flowing from the water distribution pipe 9 are mixed is sprinkler 2. To supply. In addition, the piping 4 of this embodiment shall be formed in the cylinder shape with an equal internal diameter in any location. A joint 14 (see FIG. 2) for attaching the fire extinguishing container 6 is fused to a predetermined portion of the pipe 4 between the solenoid valve 5 and the sprinkler.

  The sprinkler 2 is installed in the vicinity of the sensor 3 and applies a high pressure to the fire-extinguishing aqueous solution supplied through the pipe 4 (pressure water supplied from the water distribution pipe 9 through the pipe 4 when the fire-extinguishing liquid is used up). Thus, the water is sprayed from the nozzle (not shown) of the sprinkler head. The sprinkler 2 of the present embodiment includes an open type sprinkler head having no heat sensitive part, and sprays a fire-extinguishing aqueous solution (or pressure water) supplied through the pipe 4 while the water supply path is open in the event of a fire. Subsequently, the water supply path is shielded by driving the electromagnetic valve 5 and the supply of the fire-extinguishing aqueous solution (or pressure water) is stopped.

<Composition of fire extinguishing container>
As shown in FIG. 2, the fire extinguishing container 6 is attached to a joint 14 of the pipe 4, and a main body 11 that stores the fire extinguishing liquid, and a narrow tube 13 that supplies the fire extinguishing liquid in the main body 11 into the pipe 4. It is configured with. It is assumed that the joint 14 has been drilled on the bottom side in advance after being joined to the pipe 4, and the opening on the bottom surface is threaded to attach the main body 11 downward.

  The main body 11 has an attachment port 11 a that is screwed into the opening of the joint 14. The attachment port 11a of this embodiment makes the inside of the piping 4 and the main-body part 11 communicate, and is opened so that a pressure water may flow in from the piping 4 at the time of a fire. In addition, the main-body part 11 and the coupling 14 are sealed with various reinforcing tools so that the pressure water which flows through the piping 4 at the time of a fire may not leak outside.

  The fire extinguishing liquid is a chemical solution (stock solution) having an action of suppressing a combustion reaction, and for example, a commercial product (trade name: Fire Ade 2000, manufactured by Fire Service Plus) can be used.

  The thin tube 13 is formed in a cylindrical shape having the same tube diameter (inner diameter and outer diameter) at any location, and its lower end is disposed in the fire extinguishing liquid at the bottom of the main body 11, and its upper end Is arranged in the pipe 4.

  Specifically, the thin tube 13 has an outer diameter (for example, 3 to 5 mm) sufficiently smaller than an inner diameter (for example, 15 to 25 mm) of the pipe 4 and protrudes to the vicinity of the center position of the cross section of the pipe 4. With such a shape, when pressure water flows into the pipe 4 from the water distribution pipe 9 in the event of a fire, negative pressure is generated by the venturi effect in proportion to the force of the water flow, and the fire extinguishing liquid is sucked up from the upper end and sucked up. The fire extinguishing liquid thus discharged is discharged into the pipe 4 from the opening 13a at the upper end.

  In addition, since the narrow tube 13 discharges the fire-extinguishing liquid into the pipe 4 through the narrow tube 13 without countering the pressure water flowing in the pipe 4, the opening 13a of the opening 13a at the upper end is on the sprinkler 2 side in the pipe 4. It is arranged to face.

  Here, the ratio of the fire extinguishing liquid discharged from the narrow tube 13 into the pipe 4 (discharge amount per unit time) is such that the pressure of the pressure water flowing in the pipe 4 is near the upper end of the narrow tube 13 as compared with other places. As the pressure decreases, the flow rate of the pressure water increases near the upper end of the narrow tube 13, and therefore increases under the influence of negative pressure. Further, as the ratio of the thin tube 13 occupying the cross section of the pipe 4 increases, the pressure near the upper end of the thin tube 13 decreases and the flow rate of the pressure water increases. For this reason, in order to discharge a fire extinguishing liquid from the thin tube 13 at a desired ratio, for example, the thin tube 13 may be formed in the pipe 4 so that the pipe diameter becomes large.

  On the other hand, in this embodiment, if the concentration of the extinguishing liquid in the extinguishing aqueous solution in which the extinguishing liquid and the pressure water are mixed in the pipe 4 is about 1%, the pipe diameter of the narrow tube 13 is effective for fire extinguishing performance. The pipe diameter is formed to be constant because it is not necessary to increase the diameter of the pipe 4 in the pipe 4.

  However, since the inner diameter of the pipe 4 and the flow rate and flow velocity of the pressure water flowing through the pipe 4 vary depending on the installation location of the fire extinguishing vessel 6 (introduction location of the sprinkler fire extinguishing equipment 1), the fire extinguishing liquid discharged into the pipe 4 from the narrow tube 13 It is desirable that the ratio can be easily adjusted.

  On the other hand, in the fire extinguishing container 6 of the present embodiment, first, the thin tube 13 is formed in an L shape and is bent and arranged on the sprinkler 2 side in the vicinity of the center position of the cross section of the pipe 4. As the length of the narrow tube 13 increases, the resistance in the direction opposite to the direction in which the fire extinguishing liquid flows in the narrow tube 13 generally increases. Therefore, a longer narrow tube 13 is prepared in advance, depending on the environment where the fire extinguishing container 6 is installed. By shortening the narrow tube 13, the ratio of the fire extinguishing liquid discharged from the narrow tube 13 into the pipe 4 can be gradually increased.

On the other hand, it is desirable that the length of the narrow tube 13 in the pipe 4 is as large as possible from the viewpoint of increasing the reliability with which the fire extinguishing liquid can be discharged to the sprinkler 2 side.
On the other hand, in the fire-extinguishing container 6 of this embodiment, the opening part 13a in the upper end of the thin tube 13 is cut | disconnected diagonally. As the cross-sectional area of the opening 13a is larger, the water pressure at the opening 13a of the fire extinguishing liquid flowing in the narrow tube 13 becomes larger than the water pressure of the pressure water (or fire-extinguishing aqueous solution) flowing around the pipe 4, Increasing the proportion of the fire extinguishing liquid discharged from the narrow tube 13 into the pipe 4 by cutting the upper end in advance so that the cross-sectional area of the opening 13a is increased according to the environment of the place where the fire extinguishing container 6 is installed. Can do.

<Operation>
In the sprinkler fire extinguishing equipment 1 configured as described above, when the fire receiver 7 detects the occurrence of a fire based on the received signal from the sensor 3 that senses at least one of heat and smoke, the electromagnetic valve control panel 8 By opening the water supply path by driving the electromagnetic valve 5 provided between the water distribution pipe 9 and the pipe 4, the pressure water flows into the pipe 4.

  Then, as shown in FIG. 3 (a), in the fire extinguishing vessel 6, negative pressure is generated by the venturi effect in proportion to the force of the water flow in the pipe 4, and the fire extinguishing liquid is sucked up from the upper end of the narrow tube 13, The sucked-up fire extinguishing liquid is discharged into the pipe 4 from the opening 13 a of the narrow pipe 13.

  Moreover, since the inside of the main body part 11 and the piping 4 of the fire extinguishing container 6 communicates with each other, as shown in FIG. By flowing in, the pressure water pushes down the surface of the extinguishing liquid in the main body 11, thereby expelling the extinguishing liquid from the lower end to the upper end of the narrow tube 13 and from the opening 13 a of the narrow tube 13 to the pipe 4. The discharge of fire extinguishing liquid into the inside is promoted.

  And the fire extinguishing liquid supplied in this way in the piping 4 is mixed with pressure water, so that a solution (extinguishing aqueous solution) in which the extinguishing liquid is diluted at a predetermined concentration (for example, about 1%) is created. Sprinkler supplied with water sprays fire-extinguishing solution.

<Effect>
As described above, the sprinkler fire extinguishing equipment 1 according to the present embodiment is provided with a fire extinguishing container 6 that contains a fire extinguishing liquid, and when the electromagnetic valve 5 is driven to open the water supply path, the power of water flowing in the pipe 4 Therefore, it is possible to suppress the volume of the fire-extinguishing container 6 and the weight of the fire-extinguishing liquid, so that the fire-extinguishing aqueous solution can be suitably sprayed with a simple configuration.

  Moreover, in the sprinkler fire extinguishing equipment 1, the tube diameter of the narrow tube 13 in the fire extinguishing container 6 is constant, the opening 13a at the upper end of the narrow tube 13 is formed in an L shape so as to face the sprinkler 2, and the opening 13a Is cut obliquely, a fire extinguishing aqueous solution having a desired concentration can be created with a thin tube 13 having a simple configuration.

<Other embodiments>
As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, it is possible to implement in various aspects.

  In the fire extinguishing container 6 of the above-described embodiment, the thin tube 13 is formed in an L shape, but is not limited thereto, and may be formed in, for example, a linear shape. Moreover, although the opening part 13a of the upper end in the thin tube 13 is arrange | positioned so that it may face the sprinkler 2 side in the piping 4, it is not restricted to this, For example, even if it arrange | positions so that it may face the upper surface side of the piping 4, Good.

  Moreover, in the sprinkler fire extinguishing equipment 1 of the said embodiment, although the inside of the main-body part 11 and the piping 4 of the fire extinguishing container 6 is connecting, it is not limited to this, For example, in the main-body part 11 A movable plate for pressing down the fire extinguishing liquid when pressure water flows from the inside of the pipe 4 may be disposed, or the thin tube 13 is already described with the main body 11 of the fire extinguishing container 6 completely closed. The structure which only sucks up the fire-extinguishing liquid by the venturi effect of may be sufficient.

  In addition, the whole structure in the sprinkler fire extinguishing equipment 1 of the said embodiment is an example for demonstrating this invention to the last, The fire extinguishing container of this invention can be applied to the sprinkler fire extinguishing equipment which has various structures.

  For example, in the sprinkler fire extinguishing equipment 1 of the above-described embodiment, the fire receiver 7 and the electromagnetic valve control panel 8 are configured separately, but may be configured integrally.

  DESCRIPTION OF SYMBOLS 1 ... Sprinkler fire extinguishing equipment, 2 ... Sprinkler, 3 ... Sensor, 4 ... Piping, 5 ... Solenoid valve, 6 ... Fire extinguishing container, 7 ... Fire receiver, 8 ... Solenoid valve control panel, 9 ... Water distribution pipe, 10 ... Stop Water valve, 11 ... main body, 11a ... mounting port, 13 ... narrow tube, 13a ... opening, 14 ... joint.

Claims (6)

In the event of a fire based on a received signal from a sensor that senses at least one of heat and smoke, the water supply path opens a solenoid valve that shields the water supply path from the filled water distribution pipe to the pipe communicating with the sprinkler The sprinkler fire extinguishing equipment in which the sprinkler supplied from the water distribution pipe through the pipe is sprinkled by being driven as described above,
A fire extinguishing container that contains a fire extinguishing liquid is attached to the lower surface side of the pipe,
The fire extinguishing container has a thin tube having a lower end disposed in the fire extinguishing liquid and an upper end disposed in the pipe,
The narrow pipe has a shape in which a negative pressure is generated by the venturi effect when water flows into the pipe from the water distribution pipe, the fire extinguishing liquid is sucked up from the upper end, and the fire extinguishing liquid can be supplied into the pipe. Sprinkler fire extinguishing equipment characterized by having.   The sprinkler fire extinguishing equipment according to claim 1, wherein the narrow pipe is disposed such that an opening at the upper end faces the sprinkler side in the pipe.   The sprinkler fire extinguishing equipment according to claim 2, wherein the narrow tube is formed in an L shape.   The sprinkler fire extinguishing equipment according to claim 2 or 3, wherein the narrow tube has a constant tube diameter, and an opening at the upper end is cut obliquely.   5. The fire extinguishing container according to claim 1, wherein an attachment port to the pipe is opened so that water flows in from the pipe and the fire extinguishing liquid is pressed down. 6. The sprinkler fire extinguishing equipment described. In the event of a fire based on a received signal from a sensor that senses at least one of heat and smoke, the water supply path opens a solenoid valve that shields the water supply path from the filled water distribution pipe to the pipe communicating with the sprinkler In the sprinkler fire extinguishing equipment in which the sprinkler supplied with water from the water distribution pipe through the pipe is sprinkled, it is attached to the lower surface side of the pipe and contains a fire extinguishing liquid,
A lower end is arranged in the fire extinguishing liquid, and an upper end is arranged in the pipe.
The narrow pipe has a shape in which a negative pressure is generated by the venturi effect when water flows into the pipe from the water distribution pipe, the fire extinguishing liquid is sucked up from the upper end, and the fire extinguishing liquid can be supplied into the pipe. Fire extinguishing container characterized by having.

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