JPS6216560Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a gas supply safety device for collective housing such as underground malls and condominiums.

〓Conventional technology〓 Recently, gas leak alarms have been installed in each unit of an apartment complex as a gas supply safety device for this type of apartment complex.
A safety device has been proposed in which the gas leak alarm is centrally monitored in a control room or the like.

〓Problems that the invention aims to solve〓 However, in the method of detecting leaked raw gas using a gas leak alarm as described above, the detection ability is often affected by external factors such as gas specific gravity and wind. Furthermore, even if one gas leak alarm is installed in each house, it is difficult to detect gas leaks in each room (especially closed rooms such as baths), and how to detect gas leaking into the attic, pipe space, etc. Some issues remain.

Therefore, unlike the conventional devices mentioned above, the present invention allows gas to be supplied to each house only when gas is not to be used in that house, and when all houses do not use gas, the gas supply is shut off at the supply source. The object of the present invention is to provide a gas supply safety device for an apartment complex that prevents the occurrence of gas leakage itself when gas is not in use.

〓Means for solving the problems〓 In line with the above-mentioned purpose, the structure of the present invention, which is based on the above-mentioned utility model registration claim, is to solve the above-mentioned problems by installing a gas supply main to the apartment complex 20. A main solenoid valve 2 is interposed in the upstream part of the gas supply main pipe 1, and the main gas supply pipe 1 is branched to each house A, B, and C.
...Branch pipes 1a, 1b, 1c that supply gas to N
A solenoid valve 3 for each house is interposed in the upstream part of each house A, B, C...N, and a switch 5 for turning on and off the energizing circuit to the solenoid valve 3 for each house is installed in each house A, B, C...N.
Further, the switches 5, 5, 5, . . . of each house A, B, C, . . .
When 5, 5... are all OFF, the original solenoid valve 2
The energizing circuit for the source solenoid valve 2 is also turned OFF, and when any one switch 5 is turned ON, the energizing circuit for the source solenoid valve 2 is also turned ON. be.

〓Operation〓 Therefore, in the gas supply safety device of the present invention, the switch 5 is turned ON when gas is used, and the switch 5 is turned OFF when gas usage is finished.

Therefore, when you turn on the switch 5 because you do not want to use gas in a certain house, power is applied to the original solenoid valve 2 and the solenoid valve 3 for each door of that house, and both become open, and gas is supplied to that house. Ru.

Moreover, when the use of gas is finished, when the switch 5 is turned OFF, the power supply to the solenoid valve 3 for each door of the house is cut off, the solenoid valve 3 for each door is closed, and the gas is routed to the branch pipe to the house. It is blocked upstream. At this time, the individual solenoid valves 3 are connected to each house A, B, C...
...If gas is placed outdoors in N, even if another house uses gas, the gas will not be supplied indoors to houses that do not use gas, and each house A, B, C...
For every N, gas leakage can be prevented when gas is not used.

In addition, each house A, late at night or on holidays in the underground mall
When all the switches 5 of B, C...N are OFF, the power to the solenoid valve 2 is cut off, so gas is not supplied to the apartment complex, and the entire apartment complex is supplied with gas. Leakage is prevented.

〓Example〓 Hereinafter, the present invention will be described in detail based on an example shown in the accompanying drawings.

In the figure, reference numeral 20 indicates an apartment complex such as an underground mall or a condominium, and houses A, B, C, . . . , N are formed by walls 21 and the like.

1 is each house A, B, C of the above-mentioned apartment complex 20...
A gas supply main 1 that supplies gas to N. One end is connected to a gas supply source outside the housing complex 20, for example, in the case of city gas, the outdoor piping end is connected to a gas cylinder in the case of propane gas, and the other end is connected to a gas cylinder in each housing complex 20. ,B,C...N
Branch pipes 1a, 1b, 1c...1 for supplying gas to
n are branched and concatenated. And each branch pipe 1
The tips of a, 1b, 1c...1n are connected to each house A,
Each of the units B, C...N is connected to one gas valve 7 or branched off to a plurality of gas valves 7, 7, 7..., and a gas appliance 8 is connected to each desired gas valve 7. As before, the gas supply system is formed by connecting with a rubber hose 9 or the like.

A solenoid valve 2 is interposed in the upstream part of the main gas supply pipe 1, preferably outside the apartment complex 20. When the main solenoid valve 2 is energized, it opens and gas is supplied to the apartment complex through the main gas supply pipe 1. Gas is supplied into the housing complex 20, and when the electricity supply is stopped, the original solenoid valve 2 is closed and gas is not supplied into the housing complex 20.

In addition, each upstream part of the branch pipes 1a, 1b, 1c...1n (the upstream part of each branch pipe 1a, 1b, 1c...1n itself, and downstream from the branch point from the gas supply main pipe 1) ) Desirably, a solenoid valve 3 for each door is interposed outside each house A, B, C...N, and the solenoid valve 3 for each door is energized to operate the solenoid valve 3 for each door. Gas is supplied to each house A, B, C...N only when the door is opened.

Each of the houses A, B, C...N is provided with a switch 5 for turning on and off the energizing circuit to the individual solenoid valve 3. This switch 5 is turned on when using the gas appliance 8 of the house having the switch 5, and opens the solenoid valve 3 for each house, and when the gas appliance 8 is finished being used, it is turned off, and the solenoid valve 3 for each house is opened. The solenoid valve 3 for the switch 5 is closed, and an indicator light may be turned on when the switch 5 is in the ON state so that the OFF operation of the switch 5 is not forgotten and the switch 5 is kept in the ON state. ON in conjunction with the opening and closing of the appliance tap 8a of the gas appliance 8,
It may be set to OFF.

Note that the switch 5 may be directly interposed in the power supply circuit to the door-to-door solenoid valve 3, but in the illustrated example, the switch 5's open/close signal is connected to the power supply circuit connected to the door-to-door solenoid valve 3 downstream Pressure responsive switch 4
The control panel 6 combines and organizes the gas pressure reduction signals from the gas pressure reduction signals from the gas pressure reduction signal and the gas pressure reduction signal from the control panel 6 to control the energization to the door-to-door solenoid valve 3.
That is, when gas is not used, the switch 5 is closed, the appliance tap 8a is closed, and the door-to-door solenoid valve 3 is closed, and the gas pressure remaining between the door-to-door solenoid valve 3 and the appliance tap 8a will not change in temperature unless there is a gas leak. Since only the corresponding range changes, the switch 5 is closed and the door-to-door solenoid valve 3 is closed for a predetermined period of time (for example,
If there is a predetermined drop in gas pressure within 10 minutes, the control panel 6 detects that there is a cause of gas leak downstream from the door-to-door solenoid valve 3, issues an alarm, and then performs a predetermined reset operation. If not, turn on only switch 5.
Even so, the door-to-door solenoid valve 3 is designed not to open. Note that this control panel 6 can be realized by various combinations of switching circuits, timer circuits, memory circuits, alarm circuits, etc., and therefore a description of the circuits will be omitted.

Further, the switches 5, 5, 5... of each house A, B, C...N are connected to the switches 5, 5, 5...
When all are OFF, the energizing circuit to the original solenoid valve 2 is also OFF, and one of the switches 5 is turned OFF.
It is connected to the original solenoid valve 2 so that when it is turned on, the current supply circuit to the original solenoid valve 2 is also turned on. The connections between each switch 5 and the original solenoid valve 2 can be made by connecting the switches 5, 5, 5, etc. in parallel to open and close the energizing circuit of the original solenoid valve 2. , B, C...N, the solenoid valves 3 for each door and the original solenoid valve 2 are connected in parallel, so that when any one of the solenoid valves 3 for each door opens, the main solenoid valve 2 also opens. Also, each switch 5, 5, 5...
...is connected to a central monitoring board 10, and this central monitoring board 10 displays with a pilot lamp whether or not the switch 5 is closed in each house, and when any switch 5 is turned on, this central monitoring board 10 The main solenoid valve 2 may be energized from the panel 10.

Although not shown, a pipe pressure responsive switch 4 may be disposed downstream of the main solenoid valve 2 to incorporate the function of the control panel 6 into the centralized monitoring panel 10.

〓Effects of the invention〓 Since the present invention has the above-mentioned structure, when gas is not used in each house, the gas supply to the house can be cut off by the solenoid valve 3 for each house, thereby preventing gas leakage accidents. Furthermore, when gas is not used in all the houses, the gas supply to the housing complex 20 is cut off by the solenoid valve 2, so that gas leakage can be completely prevented when gas is not used, such as at night.

In particular, the gas supply safety device of this invention does not detect leaked gas, but rather prevents raw gas from flowing out even if there is a cause of gas leakage, even when gas is not in use, such as when people are sleeping or when no one is around. Therefore, if the switch 5 is operated reliably, it is possible to provide a gas supply safety device for an apartment complex that can achieve high reliability.

[Brief explanation of the drawing]

The drawing is a front view showing an embodiment of the present invention. 1 - Gas supply main pipe, 2, 3 - Solenoid valve, 4 - Pipe pressure responsive switch, 5 - Switch, 6 - Control panel, 7
~Gas cock, 8~Gas appliance, 9~Rubber hose, 10
~ Central monitoring board, 20 ~ Apartment house, 21 ~ Wall, A,
B, C, N~Residence.

Claims (1)

[Scope of Claim for Utility Model Registration] A solenoid valve 2 is interposed in the upstream part of the main gas supply pipe 1 to the apartment complex 20, and branches from this main gas supply pipe 1 to the respective residential buildings A, B, C... A solenoid valve 3 for each house is interposed in the upstream part of each branch pipe 1a, 1b, 1c...1n that supplies gas to N, and a solenoid valve 3 for each house is connected to each house A, B, C...N. Switches 5 are provided to turn ON and OFF the energizing circuits of the houses A, B, C...N, respectively.
When all are OFF, the energizing circuit to the original solenoid valve 2 is also OFF, and one of the switches 5 is turned OFF.
A housing gas supply safety device connected to a source solenoid valve 2 so that when the source solenoid valve 2 is turned ON, the energizing circuit to the source solenoid valve 2 is also turned ON.