JPS622065Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a dry fire extinguishing system that is installed in the middle of the pipe or at the end of the pipe, completely removes air from the pipe, and fills the fire extinguishing equipment with water. This invention relates to an air vent/water filling confirmation device for the purpose of confirming fire extinguishing equipment or sending out an operating signal for the fire extinguishing equipment.

Figure 1 is an explanatory diagram of a dry fire extinguishing system using this type of air vent and water filling confirmation device, in which 1 is the air vent and water filling confirmation device, 2 is the control valve, 3 is the control valve, 4 is the water supply pipe, and 5 is the The water supply branch pipe 6 is a sprinkler head.

In normal times, the control valve 2 is in a closed state, and the water supply pipe 4 and the water supply branch pipe 5 are not supplied with water but are only filled with air (atmospheric pressure). If a fire occurs, a fire detector (not shown)
When activated and a fire signal is given to the control panel 3,
The control panel 3 controls the opening of the control valve 2 and supplies water to the water supply pipe 4. When water is supplied, the air filled in the water supply pipe 4 etc. is transferred by the water pressure to the air vent/water filling confirmation device 1, and the air escapes to the atmosphere via the air vent/water filling confirmation device 1. After that, all the pipes are filled with water. In other words, the air vent and water filling confirmation device is configured to allow air to pass through, but close when water enters. When the water is completely filled, a notification to that effect is sent to the control panel 3, etc. and,
When the sprinkler head 6 opens due to heat, water will be sprayed from there.

This device is used in dry fire extinguishing equipment as described above, and includes an air vent, a water-filled chamber with a vent at the top of the side, and a water inlet at the bottom, and a water-filled chamber that is connected to the water-filled chamber. The present invention provides an air venting and water filling confirmation device that includes a valve that closes when the float floats, and a water filling detection switch that detects floating of the float. An embodiment of this invention will be described in detail with reference to the drawings as follows.

Fig. 2 is an explanatory diagram of an air vent and water filling confirmation device according to an embodiment of this invention, in which 7 is a connection screw for connecting to a water supply pipe (not shown), 8 is a buffer cap, and 9 is a valve desk. , 10 is a packing, 11 is a body seat ring, 13 is a water inlet, 14 is a water chamber, 15 is an air vent, 16 is a vent,
17 is a lead wire, 18 is a stem, 19 is a float, 20 is a waterproof reed switch magnet, 21 is a waterproof reed switch, and 22 is a reflector.

As mentioned above, when a fire breaks out and water starts to be supplied to the water supply pipe, the air that has been in the pipe until then is transferred by water pressure to the air vent and water filling confirmation device 1 located at the end of the water supply pipe. The air is discharged into the atmosphere through the air vent 15 according to the arrow in the figure. When the air in the pipe is released and the water flows into the water chamber 14 through the water inlet 13, the float 19 gains buoyancy and rises little by little, and when the water chamber 14 becomes full of water, the float 19 reaches its upper limit. As the float 19 rises, the valve desk 9 connected to the stem 18 below also rises, and the seal 10 of the valve desk 9 and the body seat ring 12
are engaged, resulting in a completely closed state. Additionally, as the float 19 rises, the reed switch magnet 20 attached to its upper part comes into contact with the reed switch 21, and a water charging confirmation signal is sent through the lead wire 17 of the reed switch 21. Become.

As described above, this invention makes it possible to obtain an air venting and water filling confirmation device with a simple configuration, and is extremely useful in practice.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a dry fire extinguishing equipment, and FIG. 2 is an explanatory diagram of an air vent and water filling confirmation device according to an embodiment of this invention. 1... Air vent and water filling confirmation device, 2... Control valve, 4... Water supply pipe, 5... Water supply branch pipe, 6... Sprinkler head, 9... Valve desk, 10...
Patchkin, 12...Body seat ring, 13...
...Water port, 14...Water chamber, 15...Air vent, 16...Vent, 18...Stem, 1
9...Float, 20...Reed switch magnet, 21...Reed switch.

Claims (1)

[Scope of utility model registration request] a water-filled chamber with an air vent, a vent at the top of the side wall, and a water inlet at the bottom; a float stored in the water-filled chamber; An air vent and water filling confirmation device comprising: a valve that closes when the float is turned on; and a water filling detection switch that detects floating of the float.