JPS588393A - Abnormality alarm and automatic preventor for gas explosion or the like - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an abnormality alarm in the event of an abnormality such as a gas leak in a building, and an automatic prevention device for gas explosions and the like.

2. Description of the Related Art Alarm devices for preventing major disasters from occurring by instantly warning of abnormalities before the cause of a fire or the like are conventionally known.

There is a fire or gas leak that can cause a disaster.

Some conventionally known devices of this kind have only the function of an alarm device, and others have a disaster prevention function in addition to the function of an alarm device, such as a function of cutting off the power to each room of a building (so-called breaker).

However, there was no device with excellent disaster prevention functions against gas leaks.

This invention has been made in view of the problems of the present invention, which detects the occurrence of an abnormality such as a gas leak in each room of a building, displays an abnormality display and issues an alarm, and immediately shuts off the gas supply. We propose a centralized control system for alarms and automatic prevention of gas explosions, etc.

The problem of the present invention is solved by the structure described in claim 1.

The present invention will be explained in detail based on the drawings.

In particular, the circuit diagrams of the primary information processing device, secondary information processing device, and tertiary information processing device shown in FIG. 5 are explained using ordinary relays and mechanical contacts for convenience of explanation. ,
Shikoke IC.

It is formed from a non-contact circuit using LSI.

FIG. 1 shows the functions of each component of the abnormality alarm and automatic prevention device for gas explosion, etc. according to the present invention. This component is intended for those that output from the device according to the present invention to the outside of the device, and excludes information processing devices, power sources, transmission systems, etc. The components for applying an output to the outside include a pressure reducing valve/opening/closing valve 10 directly connected to the main valve of the gas cylinder, abnormality detection sensors A, ', B, C1, etc., indicator lights BL, TWL, RL, ~RL3, A, L%
B, L% C, L etc. alarm buzzers BZ, BZ' and manual breaker HB. When the device according to the present invention is applied to city gas, it is an on-off valve that is a main valve with 10 valves.

Each room has primary information processing equipment I, 1, T, l, my father is I,
1, and before turning on the power of the device according to the present invention or during a power outage, a valve 10I/'i connected directly to the main valve of the gas cylinder, respectively.
Closed, sensors (AI, Bl, C0, etc.) dead (not ready for operation), all lamps (BL, TWL).

RL1~RL@, At L% BlLlCI L, etc.)
is death, buzzer (BZ.

BZ') is in a state of death. Next, after the power is turned on and a predetermined time (several seconds) has elapsed, the valve 1 directly connected to the main valve of the gas cylinder
0 closed, the sensor, lamp, and buzzer are active (ready for operation).

Next, generally the primary information processing device ■, 1, ■, 1 or 1,
Manual breakers H and B installed in the primary information processing device ■1, which is located in a separate room from the primary information processing device 1 and connected by a conductive wire, are pulled out by manual operation. An abnormal signal is sent from the sensor.
That is, when the sensor reports a normal state, the manual breaker I (B) is held in the drawn state, and in conjunction with this, the pressure reducing valve/opening/closing valve 10 directly connected to the main valve of the gas cylinder is opened and held as it is. In this case, not only the sensor but also the lamp and buzzer must be ready for operation.If there is a break in the conductor or coil, the manual breaker H is activated.
Valve 10 is connected to the main valve because B is not kept in the pulled out state.
It also closes. If there is an abnormality in any of the components, the manual breaker HB can be kept in the drawn state, and at the same time the valve 10 directly connected to the gas cylinder main valve is closed and cannot be kept open.

For example, when sensors A1 and BC3 in room I detect an abnormality such as a gas leak, the manual breaker HB that has been pulled out in advance is automatically pulled in by the excitation of its coil c1, and in conjunction with this, the main valve of the gas cylinder is turned off. Valve 10 connected to closes,
In this case, even if there is an abnormality in the breaker, the valve 1o is closed. On the other hand, sensors A, ,B, ,C,, lamp BL,
TWL, RL,,A,L.

B, L, C, L and buzzers BZ and BZ' operate, and as long as an abnormality such as gas leakage continues, the above sensors, lamps,
The buzzer continues to operate. A similar operation occurs even if an abnormality occurs in other chambers I2, 13, etc. Even if an abnormality develops into a fire or the like, the same state will be maintained.

This is because the falling edge of the signal is used as the control input. After the cause of the abnormality has disappeared, if you manually operate the manual breaker HB and open the valve 10 directly connected to the main valve of the gas cylinder,
If the device is normal, the sensor, lamp, and buzzer will be ready for operation again (rightmost column in Figure 1) 0 Even if a momentary power outage occurs during the above normal operation, the valve 1oII' connected directly to the main valve of the gas cylinder I am open and
and the sensor, lamp, and buzzer columns).

Figures 2a to 2c will be explained. Figure 2a is the first
The signal transmission system connecting the gas supply source, the primary information processing device I, 1, and the secondary information device 1 is shown to realize the functions shown in the figure. A gas pipe is connected to a pressure reducing valve/on/off valve 1o that is directly connected to the main valve of the gas cylinder, and the gas pipe is connected to each room 1 of the building via branch pipes. , I2, and I3 (not shown). One chamber 11 has a primary information processing device 1.1 equipped with sensors A, , B, , C, for detecting gas leaks, flames, smoke, and the like. Another room! , a primary information processing device I21 equipped with sensors A2, B2, c, respectively, and a sensor A, 1 in another room 3.
Another primary information processing device 1, 1, which is fully equipped with B3 and C8, is provided. In this way, many rooms can each be equipped with a primary information processing device.

Each room It, 12, or! From the primary information processing equipment 1, 1.121.131 of 3', the primary information processing equipment H of the abnormal intensive monitoring room H is connected through conductors as shown by solid lines, respectively.
1, and each conductor is connected to the primary information processing device ■-
Connected to accident indicator lamps RL, , RL2, and RL3 at. A conductor Ilj represented by a solid line for valve control is connected from the second information processing device ■1 to the valve control coil C of the pressure reducing valve/on-off valve 10 via the first information processing device ■1. There is. Secondary information processing device in room I1 1. +ke 2nd
As shown in figure b, an information processing circuit is connected to sensors A, %B, and C (gas, flame, smoke, etc. sensors),
In contrast, abnormality display (RL, -RL3) and alarm (
BZ') circuit is attached, and an interface (photocoupler) is connected in parallel with this circuit, which is connected to the second information processing device (1) in the intensive monitoring room H for abnormalities via a conductive wire. According to FIG. 2c, the second information processing device (1) and the primary information processing device (2) of the abnormal intensive monitoring room H are shown, and the output from the primary information processing device (6) is input. The secondary information processing device has abnormality indicator lights RLI > Rb2, RL3.
, a comprehensive abnormality indicator TWL, a warning device BZ, and a normal operation display device are attached, and the primary information processing device 1
A signal is input from '. On the other hand, the signal is transmitted from the secondary information processing device ■1 to the primary information processing device ■, and from there, the signal is returned to this device via the manual breaker HB, and at the same time as normal operation is displayed, it is transmitted via the valve control circuit. A signal is input to the valve control coil C. 11 in each room if an abnormality occurs.
Or, even if the signal emitted from I3 is input to the tertiary information processing device [1], the manual breaker HB circuit (Fig. 2) is cut off, so the valve control circuit, and therefore the valve control circuit, is There is no input to Ile C, so the 10 pressure reducing valves and on/off valves directly connected to the city gas on/off valve or the gas cylinder main valve are closed. If there is an input to the valve control file C, the coil is excited and the on-off valve (main valve) of each city gas chamber or the pressure reducing valve/on-off valve 10 is opened.

Next, FIG. 5 shows an electric circuit for demonstrating the functions of the component parts of the device according to the present invention shown in FIG.
1, 1 or I, ■ indicates each room in the building 1.1. I.

Father 1. The sensor AH,”Bl,C to be placed in
1, A2, B2, C2 is a primary information processing device consisting of A3, B3, C3 and their attached devices, and Hl
Each room above 1. ．． This figure shows a secondary information processing device that is to be installed, for example, in a building's management room (2), which is spaced apart from the 12-span I3.

Device 1. Valve 10 (fifth valve) directly connected to the main valve of the smoke gas cylinder
A DC circuit is formed in which a circuit element consisting of a resistor r and a capacitor C is connected in parallel to the valve control coil C for opening and closing the valve control coil C shown in the figure), and this circuit includes a relay Br having a normally open contact. The contacts br, are connected in series.

There is a manual breaker circuit in parallel with the above circuit, and the manual breaker circuit is connected to the mechanical movement of the manual breaker HB.
rt to br3 are provided, and from the coil CI of the manual breaker HB to the contact sa of the slow motion relay Sa, the contact x of the relay X01XI, I2, x, which has a normally closed contact.
Q,
and a resistor r are connected in parallel to each other.

Further, the contact X of the relay x1 is connected in parallel with the circuit including the contact br of the relay Br2 and the circuit including the contact br3 of the relay Br3.

A circuit is provided in which the normally open contact X1 and the relay coil PX are connected in series.

There is a circuit in which the normally open contact 1) of X+ is in a parallel relationship.

There is also a circuit in which the normally open contact X2 of the relay x2 and the coil Px2 are connected in series, and the contact x2 and the contact T)I2 are in a parallel relationship. There is also a circuit in which the normally open contact X of the relay I3 and the relay coil px3 are connected in series, and the contact X3 and the contact pXs of the normally open contact Pχ3 are in a parallel relationship. Further, a normally open contact pX1 of the relay coil px and a red lamp RL for indicating an abnormality are connected in series, and a normally open contact 1) I2 and another abnormality indicating lamp RL are connected in parallel.

A circuit is provided in which these are connected in series.

Furthermore, a circuit is provided in parallel with this, in which a normally open contact pX3 and another abnormality indicating red lamp RL3 are connected in series.

On the other hand, normally open contacts pX+, pX2 and 1)Xs are further connected in parallel with each of the above circuits and in parallel with each other. Circuit elements having a parallel relationship with the indicator light TWL are connected in series. Earthquake sensor

A normally open contact X attached to the tertiary information processing device ■1.

Coil X by closing 1. Excite.

Next, the device I, 1 consisting of the sensors A, SB, and their attached devices will be explained. Building rooms 11, I2
Devices 1 and 1 each perform an abnormality sensing function within the straddle I3.
．． 1.1 or! 3° is installed. Al% Bl
, C1 are sensors such as a gas leak sensor, a flame sensor, and a smoke sensor, and the normally open contacts a, , bl, and C1 close the contacts when activated. Sensor A1, B,
Contact a that closes when an accident is detected and C1 respectively.
, +, bll, and c, + are connected in parallel to form one circuit. In parallel with this circuit, contact a and abnormality indicator lamps A and L are connected in parallel, respectively.
A circuit is formed consisting of the contact C1 and the abnormality indicator lamps B and L, and the contact C1 and the abnormality indicator lamps C and L. Furthermore, a normally open contact a, which is parallel to the above circuit and is in a parallel relationship with each other;
, bl, and C1 are connected in series with an alarm buzzer BZ' to form one primary information processing device I.
-, and this circuit is equipped with a relay coil X in series, which becomes energized by an abnormality in chamber 11. For example, two similar primary information processing devices I2, 131 are separately provided in parallel, and each of the primary information processing devices 121 or offices Fii, h is connected in series to a room I2 or a room 1.
Relay fill x2 or I3 that operates when an abnormality occurs
including.

According to the tertiary information processing device shown in FIG. 4, similar logic circuit elements are connected to each abnormality sensing device (gas leak accident, flame, smoke, etc.). If any abnormality occurs and there is a signal, the abnormality indicator lamp will light up and the alarm buzzer will sound.

According to FIG. 5, the structure of the manual breaker HB is shown, in which a spool 12 passing through seven flange 15 is fixed to the manual breaker knob 11, and the flange 15 is fixed to gauging 14, and the seven flange 15 made of non-magnetic material is fixed. Central monitoring room 1
It is attached to the second type information processing device H1+ of No. 1. During gauging 14, a coil 15 is fixed via a sleeve 16, and the sleeve 16 and the 7 langes 12a of the spool are connected.
A coil spring 17 is installed between the two.

There is a protrusion 12b at the end of the spool. Gauging 14
The lid 18 made of a non-magnetic material has the protrusion 12b at the end thereof.
The fitting recess 18a of the lid 1 and the optical paths 18b and 18c for the 7 Oto couplers Brl to B3 are arranged in a straight line, and the lid 1
Attached to the circuit breaker 8 is a control circuit for the circuit breaker HB, and thus a substrate 19 with contacts and having a specific dielectric constant.

According to the present invention, each interior of a building 1. , r2 and I3, especially when gas leaks, flames, smoke, etc. occur, the primary information processing equipment in each room II', ■2' father receives a signal from T and I that indicates any of the above abnormalities. This is input into the primary information processing device (1) of the abnormality central monitoring room, and the pressure reducing valve/opening/closing valve (10) directly connected to the city gas main valve or gas cylinder main valve is immediately closed. The same applies if earthquake sensor
, L and alarm buzzer BZ', and at the same time, the primary information processing device ■'' of the abnormality intensive monitoring room ■ also displays (RL, ~RL3) and reports (BZ
), and at the same time, the valve 10 directly connected to the main valve of the gas cylinder is shut off, thereby preventing disasters such as gas explosions. The closure of the valve 10 directly connected to the main valve is maintained until the cause of the accident disappears and the manual breaker HB is pulled out by manual operation, thereby opening the valve 10. The primary information processing device 111 is in a normal state ((BL lit)
The manual breaker HB is pulled out and the valve 10 is held open.

Non-contact switch (photocoupler) on manual breaker HB
Br, -Br are used, eliminating the cause of spark generation. After closing the valve 10 directly connected to the gas main valve, even if the abnormality disappears, operate the breaker HB manually as described above to shut it off. do not have. If the accident is still continuing or a new abnormality has occurred, the manual breaker HB will not be held even if the manual breaker HB is turned off, and σ1 will be loaded immediately, and the main valve 10Fi will remain closed, but the abnormality indicator light RL... RL2
, the straddle RL3 and the general abnormality indicator light TWL tfi are lit, and the alarm device BZSBZ' is activated.

In addition to the abnormality alarm function, the device according to the present invention also has an automatic gas explosion prevention function that immediately shuts off the main valve of the gas cylinder. By also providing the processing equipment, residents can be thoroughly notified in the event of an abnormality, and gas explosions can be reliably prevented.

In particular, the circuit diagrams of the primary information processing device, secondary information processing device, and tertiary information processing device shown in FIG. 3 are explained using ordinary relays and mechanical contacts for convenience of explanation. ,
Preferably, it is formed from a contactless circuit using an IC or LSI.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the functions of the component parts of the abnormality alarm and automatic prevention device for gas explosion, etc. according to the present invention, and Figs. 2a to 29
FIG. 1 is a block diagram showing a signal transmission system for achieving the indicated functions, and in order from the top, the entire system, the primary information processing device, the secondary information processing device, and the tertiary information processing device. An information processing device, FIG. 5 shows an electric circuit corresponding to a centralized control system that integrates the block diagrams shown in FIGS. 2a to 2c, and FIG. 4 shows an example of a logic circuit of a primary information processing device.
FIG. 5 shows a longitudinal sectional view of a manual breaker attached to the secondary information processing device.

Claims (5)

[Claims] (1) Each primary room (II, 12.1.) in the building is equipped with one or more sensors, especially gas leak sensors, flame sensors or smoke sensors, for detecting various abnormalities. Information processing devices (f1', I21, In') are installed, and a secondary information processing device (■1) is installed in an abnormality intensive monitoring room (■) that is separated from the information processing equipment (f1', I21, In'). 11', ■, 1,
It is connected to I31 and M' by a conductive wire, and is further connected to the on-off valve or pressure reducing valve of the gas supply source via the secondary information processing device (1) to the tertiary information processing device (1'). Conductive wires are connected to the on-off valves (<10), and if any of the above abnormalities occur, each of the above chambers (L,
An abnormality characterized in that the on-off valve or pressure reducing valve/on-off valve αO) is configured to be shut off instantaneously when an abnormality display and alarm are issued in the abnormality monitoring room (ml) and/or the abnormality monitoring room (ml). Automatic prevention devices for alarms and gas explosions, etc. (2) A manual breaker (HB) is attached to the secondary information processing device (II'), and the secondary information processing device (■
1) under the condition that the manual breaker (H) is ready for operation.
B) Movement and gas supply source on/off valve or pressure reducing valve/on/off valve α
6) The automatic prevention device for abnormality alarms and gas explosions, etc., according to claim 1, wherein the opening and closing movements of 6) are performed in conjunction with each other. (3) Each abnormality display device (A, L"-C3L, R.L., ~
RL, and TWL) and alarm devices (BZ', BZ
) is a gas supply source on/off valve or pressure reducing valve/on/off valve (10)
3. An automatic prevention device for abnormality alarms and gas explosions, etc., according to claim 1 or 2, which maintains an operational readiness state for abnormality display and alarm generation even in a shut-off state. (4) A patent claim that uses an electromagnetic switch to shut off the power to the building in order to avoid gas ignition due to sparks emitted from the switches of various electrical appliances in each room in the event of an abnormality such as a gas leak. An automatic prevention device for abnormality alarms and gas explosions, etc., as set forth in any one of items 1 to 5. (5) First information processing device (11'lz', Is')
, the secondary information processing device (lI') and the tertiary information processing device (1') each consist of a non-contact circuit using an IC or an LSI. Abnormal alarm and automatic prevention device for gas explosion, etc. described in any one of the above.