JP2010234024A - Fire extinguishing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inspect equipment without producing foam to a protection compartment when inspecting the operation of a deluge valve. <P>SOLUTION: A secondary chamber of the deluge valve 6 is connected with a secondary-side pipe 7, and the secondary-side pipe 7 is connected with fire extinguishing heads 8. The primary side of the deluge valve 6 is provided with a first water shutoff valve 13, and a part between the first water shutoff valve 13 and the deluge valve 6 is provided with a three-way joint 15. The three-way joint is connected with a simple pump 17 as a pressurizing means and the primary side of the fire extinguishing heads 8 of the secondary-side pipe 7 is provided with a second water shutoff valve 14. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fire extinguishing facility equipped with a simultaneous opening valve.

  Conventionally, in a parking lot such as a building, a foam fire extinguishing facility (for example, see Patent Document 1) provided with a simultaneous opening valve has been installed. The foam extinguishing equipment consists of a foam aqueous solution supply means, a simultaneous opening valve provided in the protective compartment, a sensing head connected via a pipe to the cylinder chamber of the simultaneous opening valve, and a pipe in the secondary chamber of the simultaneous opening valve. It is comprised from the foam head etc. which are connected through.

  The foam aqueous solution supplying means is composed of a pressurized water supply device including a pump and a water tank, a stock solution tank, and a mixer for mixing the stock solution and water to produce a foam aqueous solution. In this foam fire-extinguishing equipment, when the fire is fired, the sensing head is opened, the simultaneous opening valve is operated, and the valve body is opened. Then, foam aqueous solution is supplied to the foam head, and foam is released to the protective compartment to extinguish the fire.

Japanese Patent Laid-Open No. 10-201874

  It is necessary to check the operation of foam fire extinguishing equipment regularly. For example, when it is attempted to check whether or not the simultaneous release valve is correctly opened by opening the sensing head, if the simultaneous release valve is actually opened, bubbles will be generated in the protective compartment as in the case of fire. Is released, and it is troublesome to clean up after the bubbles.

  Then, an object of this invention is to enable it to check a simultaneous opening valve, without issuing a bubble to a protection area.

  The present invention relates to a fire extinguishing facility comprising a simultaneous opening valve, a secondary side pipe connected to the secondary chamber of the simultaneous opening valve, and a fire extinguishing head connected to the secondary side pipe. A first water stop valve provided in the first, a three-way joint provided between the first water stop valve and the simultaneous release valve, a pressurizing means connected to the three-way joint, and a fire extinguishing head for the secondary side pipe And a second water stop valve provided on the primary side.

  According to the fire-extinguishing equipment according to the present invention, the equipment can be inspected without producing bubbles in the protective compartment when the operation of the simultaneous opening valves is inspected.

It is a system distribution diagram of the fire extinguishing equipment of the present invention.

  Hereinafter, the fire extinguishing equipment of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a pump, 2 is a water tank, 3 is a stock solution tank, and 4 is a mixer. The pump 1 to the mixer 4 constitute a foam aqueous solution supply means. In the event of a fire, for example, when a pressure air tank (not shown) detects a pressure drop in the pipe to which the mixer 4 is connected, the pump 1 is activated and the water in the water tank 2 is supplied to the stock solution tank 3 and the mixer 4. When water is received in the stock solution tank 3, the stock solution stored inside is sent to the mixer 4, and in the mixer 4, water and the stock solution are mixed to produce a foam aqueous solution, which is supplied to the simultaneous open valve side described later. To do.

  6 is a simultaneous opening valve installed for each protection section. The primary side of the simultaneous release valve 6 and the secondary side of the mixer 4 are connected via a pipe. A secondary side pipe 7 is connected to the secondary chamber (secondary side) of the simultaneous release valve 6. A plurality of fire extinguishing heads 8 are connected to the secondary side pipe 7. As the fire extinguishing head 8, an open type foam head or a closed type spray head is used.

  9 is a pipe for the sensing head, which is connected to the cylinder chamber of the simultaneous release valve 6. A plurality of sensing heads 10 are connected to the sensing head pipe 9, and a manual start valve 11 is provided at the end of the sensing head pipe 9.

  By the way, by using a closed-type foam head or a closed-type spray head as the fire-extinguishing head 8, it becomes possible to perform local discharge in the foam-extinguishing equipment, and the foam is released only to a necessary place in the event of a fire. Is possible. In this case, it is preferable to use a highly sensitive sensing head as the sensing head 10 so that the sensing head 10 is activated before the closed fire extinguishing head 8 operates.

  Water stop valves 13 and 14 are provided on both sides of the simultaneous opening valve 6, respectively. That is, the first stop valve 13 is provided on the primary side (primary chamber side) of the simultaneous opening valve 6, and the secondary side pipe 7 connected to the secondary side (secondary chamber side) of the simultaneous opening valve 6. Is provided with a second water stop valve 14. In other words, the second water stop valve 14 is provided on the primary side of the fire extinguishing head 8 of the secondary side pipe 7. Both the first water stop valve 13 and the second water stop valve 14 are normally open, and are manually or electrically closed at the time of inspection.

  Reference numeral 15 denotes a three-way joint, which is provided between the first water stop valve 13 and the simultaneous release valve 6, and for example, a T-shaped joint is used. The three-way joint 15 has three connection ports, and the simultaneous release valve 6, the first water stop valve 13, and the pressurizing means are connected. Note that the connection port 15C to which the pressurizing means is connected is normally closed by a lid member (not shown). Instead of the lid member connected to the connection port 15C, for example, a manual on-off valve may be provided. Reference numeral 17 denotes a simple pump as pressurizing means, which is connected to the connection port 15C of the three-way joint 15 when the simultaneous release valve 6 is inspected. A compressor or the like may be used as the pressurizing means. In addition, 20 is a main pipe that is vertically raised from the secondary side of the mixer 4, and 21 is a primary pipe that is branched from the main pipe 20 and connected to the simultaneous release valve 6. Although a running water detector (not shown) is connected to the primary side pipe 21, a test valve may be provided on the secondary side. By opening this test valve at the time of inspection, it is possible to measure water discharge pressure, mixing ratio, expansion ratio, and the like.

  Next, the case where the operation check of the simultaneous release valve 6 is performed will be described. First, the inspector of the fire extinguishing equipment removes a lid member (not shown) connected to the connection port 15C of the three-way joint 15, and connects the simple pump 17 to the connection port 15C. The simple pump 17 and the connection port 15C are connected using flexible piping or the like.

  Then, the first water stop valve 13 on the primary side of the simultaneous opening valve 6 is closed so that the foam aqueous solution is not supplied from the foam aqueous solution supply means. That is, when the simultaneous opening valve 6 is opened at the time of inspection, if the pressure on the primary side of the simultaneous opening valve 6 drops, the pump 1 is driven, and water is fed to the stock solution tank 3. At the time of inspection of equipment, there is a trouble such as closing various valves around the raw liquid tank 3 so that water is not fed into the raw liquid tank 3, but in the case of the present invention, such trouble is unnecessary and the first stop is required. It is only necessary to close the water valve 13.

  And the 2nd water stop valve 14 in the secondary side piping 7 of the secondary side of the simultaneous release valve 6 is closed. By closing the second water stop valve 14, even if the simultaneous opening valve 6 is opened, the foam aqueous solution is not supplied to the fire extinguishing head 8, so that bubbles are prevented from being released into the protective compartment. it can.

  When the valve-related preparation is complete, the simple pump 17 connected to the three-way joint 15 is activated to pressurize the primary chamber side of the simultaneous release valve 6. Thereby, the pressure side of the pressurized fire extinguishing water is applied to the primary side of the simultaneous release valve 6 as in the normal state.

  After this state is reached, finally, the manual start valve 11 at the end of the sensing head pipe 9 is opened. If it does so, it will be in the same state as the sensing head 10 open | released, the foam aqueous solution in the piping 9 for sensing heads will be discharged | emitted from the manual starting valve 11, and the cylinder chamber of the simultaneous release valve 6 will pressure-reducing. At this time, since the primary chamber is pressurized by the simple pump 17, the simultaneous release valve 6 is opened, but since the second water stop valve 14 is closed, bubbles are not released from the fire extinguishing head 8. .

  The operation of the simultaneous release valve 6 may be checked visually, but in order to make it easier to check the operation of the simultaneous release valve 6, a switch for detecting the rise of the valve body of the simultaneous release valve 6 is connected to the outside of the valve body. For example, it may be detected as a signal.

  As described above, since the operation check of the simultaneous opening valve 6 is performed, the facility can be checked without producing bubbles in the protection section. After confirming the operation, return the various valves to their original state and finish the inspection.

  By the way, although the foam fire extinguishing equipment using such a simultaneous opening valve is installed in many sites, an open-type foam head is usually used as a fire extinguishing head. Therefore, when renewing the foam fire extinguishing equipment, as described above, the fire extinguishing head is replaced with a closed foam head, and the sensing head is more sensitive than the fire extinguishing head, so that the simultaneous opening valve and equipment piping are replaced. In the state where it is used as it is, the whole area emission type foam fire extinguishing equipment may be changed to the local emission type closed foam fire extinguishing equipment. In this facility, in the event of a fire, the sensing head is actuated, whereby the simultaneous release valve is opened, and the secondary side pipe is filled with the aqueous foam solution. Thereafter, when the closed foam head is opened, the foam is released only from the operated closed foam head to extinguish the fire.

1 pump, 2 water tank, 3 stock solution tank, 4 mixer,
6 Simultaneous release valve, 7 Secondary piping, 8 Fire extinguishing head,
10 sensing head, 13 first water stop valve, 14 second water stop valve.
15 Three-way joint, tt

Claims (1)

In a fire extinguishing facility comprising a simultaneous opening valve, a secondary side pipe connected to the secondary chamber of the simultaneous opening valve, and a fire extinguishing head connected to the secondary side pipe,
A first water stop valve provided on the primary side of the simultaneous release valve;
A three-way joint provided between the first water stop valve and the simultaneous release valve;
Pressurizing means connected to the three-way joint;
And a second water stop valve provided on the primary side of the fire extinguishing head of the secondary pipe.