JPS5839737Y2 - Fire hydrant automatic opening device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a fire hydrant automatic opening device that automatically opens a fire hydrant to supply fire extinguishing water when a fire is detected. It can be opened and closed using AC 100v indoor wiring), and when a fire is detected, the fire hydrant can be automatically opened using an emergency power source separate from the general power source.

That is, the present invention has a general power connection terminal connected to an AC power source, an emergency power connection terminal connected to an external fire detection device and supplied with AC power upon detection of a fire, and an emergency power connection terminal connected to this connection terminal. an emergency power supply relay connected to the general power supply connection terminal through the first contact of this relay; a transformer connected to the power supply connection terminal and connected to the emergency power supply connection terminal via the contact and a second contact of the emergency power supply connection relay; and a rectifier connected to the secondary side of the transformer. circuit, a faucet opening/closing relay connected to the rectifying circuit via the third contact of the emergency power supply relay and a faucet opening/closing manual switch connected in parallel with the third contact, and the rectifying circuit via the contact of this relay. and a fire hydrant connection terminal connected to the circuit, and when the emergency power supply relay is de-energized, AC power is supplied to the general power supply relay through the first contact, so that the relay When the power is energized and AC power is supplied from the general power connection terminal to the primary side of the transformer through the contact, and when AC power is supplied to the emergency power supply relay from the emergency power connection terminal,
By energizing the relay, opening its first contact, deenergizing the general power supply relay and switching its contacts, and simultaneously closing the second contact of the emergency power supply relay,
AC power is supplied from the emergency power connection terminal to the primary side of the transformer, and the third contact of the emergency power supply relay is closed, the faucet opening/closing relay is energized, and the contact of the relay is switched. DC voltage is supplied from the rectifier circuit to open the fire hydrant connected to the fire hydrant connection terminal, and the manual switch for opening and closing the hydrant is turned on and off to energize and de-energize the relay for opening and closing the hydrant. , the fire hydrant is configured to be able to be opened and closed.

The present invention will now be described in detail with reference to the illustrated embodiments.

The device has two pairs of power input terminals, namely AClooV
General power connection terminal 1 that connects to the indoor wiring outlet of
, 1, and emergency power connection terminals 2, 2 connected to an external fire detection device (not shown).

General power connection terminals 1 and 1 have AClooV (general power supply)
However, the emergency power connection terminal 2.2 is supplied with AClooV (emergency power) only when an external fire detection device connected thereto detects a fire.

An emergency power supply relay 3 is connected to the emergency power connection terminals 2 and 2.
and its auxiliary relay 4 are connected, and the general power supply connection terminals 1, 1 are connected to the first contacts 3.4 of these relays 3.4 connected in parallel to each other. ,4. A general power supply relay 5 is connected via.

In the normal state shown in the figure, in which the relays 3 and 4 are de-energized and the power switch 6 is turned on, the relay 5 is energized by the general power source, and the second contact 42 of the relay 4 is energized.
, 42 and the transformer 7 through the contacts 51 and 52 of the relay 5.
General power is supplied to the primary side of the

At this time, the general power supply display lamp 8 lights up.

On the other hand, when emergency power is supplied to the emergency power connection terminals 2, 2 as described above, both the relays 3, 4 are energized, thereby causing their first contacts 3. ,4. opens, the relay 5 is deenergized, its contacts 5□, 51 are switched, the second contacts 42, 4□ of the relay 4 are opened, the second contacts 3□, 32 of the relay 3 are closed, The primary side of the transformer 7 is cut off from the general power supply, and contacts 3□, 3□ and contact 5. , 5° is supplied with emergency power.

At this time, the emergency power supply display lamp 9 lights up.

A diode 10 is connected to the secondary side of the transformer 7.
A rectifier circuit is connected, and ACloov is rectified to a constant DC voltage.

A faucet opening/closing relay 12 is connected to this rectifier circuit via the third contact 33 of the relay 3 and a faucet opening/closing manual switch 12 connected in parallel thereto, and a failure notification relay 13 is also connected thereto. ing.

When the relay 12 is de-energized, three fire hydrant connection terminals 14x, 14y are connected as shown.

14y of 14z is the first contact 121 of the relay 12
It becomes electrically connected to the rectifier circuit through 14
z becomes electrically connected to the rectifier circuit through the stabilizer resistance tube 15 and the contact 131 of the relay 13, and these connection terminals 14
A DC voltage is applied between y and 14z.

At this time, the external fire hydrant (not shown) connected to the connection terminals 14x, 14y, and 14z (known type that opens and closes the valve using an electromagnet or morph) is closed, and the hydrant closed indicator lamp 16 lights up. ing.

Note that at this time, since the connection terminal 14x is connected to the diode 17 via the second contact 122 of the relay 12,
No current can flow through it.

On the other hand, when the relay 3 is energized as described above upon detection of a fire, its third contact 33 is closed and the relay 12 is energized;

122 is switched, and at this time the connection terminal 14
By applying a DC voltage between x and 14z, the fire hydrant is automatically opened, and the hydrant open indicator lamp 18 is turned on.

The relay 12 is also energized by turning on the manual switch 11, and the fire hydrant can be opened and closed by turning the manual switch 11 on and off when general power is supplied to the transformer 7 as described above. It is something.

As described above, if the fire hydrant does not open or close even though DC voltage is supplied to it through the connection terminals 14xt 14yt 14z, the relay 13 is activated by the action of the stabilizing resistance tube 15 due to overcurrent flowing. The contact 13 is switched so that a failure alarm buzzer 19 sounds and a failure indicator lamp 20 lights up.

As mentioned above, according to the present invention, the fire hydrant can normally be opened and closed using a general power source by remote control using a manual switch, and when a fire is detected, the fire hydrant can be automatically opened using an emergency power source other than the above-mentioned general power source. The water in the monoden fire hydrant piping can normally be used for purposes other than fire extinguishing water, and in the event of a fire, the fire hydrant can be automatically opened using emergency power even if the general power supply is interrupted due to the fire. It is.

[Brief explanation of drawings]

The drawing is an electrical circuit diagram showing an embodiment of the present invention. 1...General power supply connection terminal, 2...Emergency power supply connection terminal, 3, 3, ~33...Relay for emergency power supply and its first to third contacts ,5,5,...
... General power supply relay and its contacts, 7...
...Transformer, 10...Diode constituting the rectifier circuit, 12,121゜12□...Relay for opening and closing the faucet and its first... Second contact, 11... Manual switch for opening and closing the faucet, 14X. 14yt14z...Fire hydrant connection terminal.

Claims (1)

[Scope of utility model registration request] A general power connection terminal that connects to an AC power source, an emergency power connection terminal that connects to an external fire detection device and receives AC power when a fire is detected, and an emergency power supply relay that is connected to this connection terminal. and a general power supply relay connected to the general power supply connection terminal through a first contact of the relay, and a primary side connected to the general power supply connection terminal through the contact of the general power supply relay. and the second contact of the emergency power connection relay.
A transformer connected to the emergency power connection terminal through the contact, a rectifier circuit connected to the secondary side of this transformer, a third contact of the emergency power supply relay, and a third contact connected in parallel with this. A hydrant opening/closing relay connected to the rectifier circuit via a manual hydrant opening/closing switch and a fire hydrant connection terminal connected to the rectifying circuit via the contacts of this relay are provided, and the emergency power supply relay is deenergized. When doing so, the first
When AC power is supplied to the general power supply relay through the contacts, the relay is energized and AC power is supplied from the general power connection terminal to the primary side of the transformer through the contacts, and When AC power is supplied to the emergency power supply relay from the emergency power connection terminal, the relay is energized,
When the first contact opens, the general power supply relay deenergizes and its contacts switch, and at the same time, the second contact of the emergency power supply relay closes, allowing the emergency power connection terminal to connect to the transformer's primary When AC power is supplied to the side, the third contact of the emergency power supply relay closes, the faucet opening/closing relay is energized, and the contact of the relay is switched.
DC voltage is supplied from the rectifier circuit to the fire hydrant connected to the fire hydrant connection terminal to open it, and the manual switch for opening and closing the hydrant is turned on and off to energize and de-energize the relay for opening and closing the hydrant. An automatic fire hydrant opening device characterized by being capable of opening and closing the above fire hydrant.