JPH10246400A - Safety control method of various fluid fuel pipe passages and device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a leakage of fluid fuel securely by linking a building with a fluid fuel storage place by using a pipe passage, providing a meter mechanism with shut-off function on the upstream side of the pipe passage in the vicinity of the fuel storage place, and generating a command for shutting off the supply of fuel to the meter mechanism on the upstream side to shut off the supply of fuel when an abnormality occurs in a flow of fuel. SOLUTION: A building H is linked with a fluid fuel storage place L which is apart from the building H by using a pipe passage P, a meter mechanism S2 is provided on the downstream side of the pipe passage P in the vicinity of the building H, a meter mechanism with shut-off function S1 is provided on the upstream side of the pipe passage P in the vicinity of the fuel storage place, and they are connected with a controller C which is arranged separately. Flow rate signals of gas which flows through the gas meter mechanisms S1 , S2 on the upstream side and the downstream side are input into the controller C and are compared continuously at all times. When a gas leakage occurs and a special difference occurs in flow rate comparison value, it is judged that an abnormality occurs, and a command for closing a valve to shut off gas is given to the gas meter mechanism S1 , S2 on the upstream side and the downstream side to shut off them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for safety management of various fuel pipes.

[0002]

2. Description of the Related Art Conventionally, when propane gas is used, for example, a propane gas cylinder is arranged at a certain distance outside a house or a building with respect to its piping.
Houses and buildings are connected to the propane cylinders by pipes, and a gas meter mechanism that shuts off the gas supplied to the pipes is installed. In the event of an earthquake, fire or other emergency, the gas is supplied by the gas meter mechanism. It is designed to shut off the gas that is generated. It cuts off the use of fire in homes and buildings, which can stop the use of fire. However, according to such a method, if the pipe itself is broken in the middle of the pipe, it is very difficult to detect that a gas leak has occurred due to the damage, and it is difficult to store the gas upstream. It is inevitable that all of the gas in the propane gas cylinders is at risk of escaping. Fig. 2 shows an outline of an example of the conventional method and equipment, where the building (H) and the propane gas cylinder (G) are stored.
(L) indicates a state apart from each other and is connected by a pipeline (P), and a gas meter mechanism (S) for shutting off gas is provided in the example in the immediate vicinity of the building (H). If plumbing
If the pipe is broken in the middle of (P), all the gas in the propane gas cylinder (G) will flow out. Such damage to the piping (P) can be caused by corrosion of the piping itself,
It can be caused by disasters such as earthquakes, movement of heavy objects such as vehicles, and the effects of vibration.

[0003]

SUMMARY OF THE INVENTION The present invention has been found to be insufficient in the conventional means for supplying propane gas or the like. By monitoring and comparing the flow rates upstream and downstream of the pipe line continuously in case
When there is a flow rate difference due to leakage of fluid fuel in the middle of the pipeline, the abnormality is immediately identified, and thereby, the shut-off function is operated, and safety is ensured by preventing leakage of supplied fluid fuel. Another object of the present invention is to provide a method and an apparatus for managing the safety of pipes for various fluid fuels, which are aimed at preventing outflow from stored fuel containers.

[0004]

SUMMARY OF THE INVENTION A pipe is connected between a building and a storage location for a fluid fuel separated therefrom, and a meter mechanism is provided downstream of the pipe near the building. Provision is made on the upstream side of the pipeline near the storage area, and they are connected to a controller that is separately arranged, and the controller continuously compares the flow rates of the fuel flowing through the upstream and downstream meter mechanisms continuously at all times. When a difference occurs, a fuel supply cutoff command is issued to the meter mechanism on the upstream side, and a safety management method for various fluid fuel pipe lines characterized by shutting it off, a building, and A pipe mechanism connects the distant fluid fuel storage areas with a pipe line, and a meter mechanism provided with a supply fuel shut-off function as necessary is provided downstream of the pipe line near the building, and a meter mechanism with a shut-off function is provided at the fuel storage area. Provision is made on the upstream side of the nearby pipe line, and they are connected to a controller that is separately arranged, and the flow rate of the fuel flowing through the upstream and downstream meter mechanisms is continuously compared with the controller at all times, and the flow rate at the normal time is Various fluid fuels characterized by issuing a fuel supply cutoff command to the upstream and downstream meter mechanisms when an abnormal difference occurs with respect to the comparison value so as to cut them off simultaneously. Pipeline safety management method, a meter mechanism equipped with a function to connect the building and the place of fluid fuel installed separately from it with a pipeway and shut off the supply fuel if necessary, downstream of the pipeway near the building Installed on the upstream side of the pipe line near the fuel storage area, and connected to a controller that is separately installed. The flow rate of gas flowing through each meter mechanism on the downstream side is continuously compared at all times, and the flow rate comparison value at normal time is stored. When an abnormal difference occurs in the flow rate of the meter mechanism, a command for shutting off the supply fuel is issued to each of the upstream and downstream meter mechanisms to shut off the fuel supply. The above-mentioned safety devices for various fluid fuel pipes are provided with the earthquake sensor, the device, various sensors, and the device attached to the safety device and the controller.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a pipe (P) is connected between a building (H) and a storage place (L) for a fluid fuel separated therefrom,
The meter mechanism (S ₂ ) is installed downstream of the pipeline (P) near the building (H), and the meter mechanism with shutoff function (S ₁ ) is installed upstream of the pipeline (P) near the fuel storage area. And connect them to the controller (C),
When the flow rates of the fuel flowing through the upstream and downstream meter mechanisms (S ₁ ) and (S ₂ ) are continuously compared at all times, and an abnormal difference occurs with respect to the flow rate comparison value in the normal state. Then, issue a fuel supply cutoff command to the upstream meter mechanism (S ₁ ),
A method for safety management of various fluid fuel piping, characterized by blocking it, connecting the building (H) and the storage area (L) for fluid fuel installed separately from it with a piping (P), Meter mechanism with a function to shut off when supply of fuel is required
(S ₂ ) is installed downstream of the pipeline (P) near the building (H),
Similarly, a meter mechanism (S ₁ ) for shutting off the supplied fuel is provided on the upstream side of the pipe line (P) near the fuel storage, and it is connected to a controller (C) that separately arranges them, and this controller (C)
In the meantime, the flow rates of the gases flowing through the upstream and downstream meter mechanisms (S ₁ ) and (S ₂ ) are continuously and constantly compared at all times, and the flow rate comparison values at normal times are stored. , A function to judge that there is an abnormality, and when an abnormal difference occurs between the flow rates of these meter mechanisms (S ₁ ) and (S ₂ ),
The safety devices and the controller (C) of the various fluid fuel pipe lines, which are emitted to the upstream and downstream meter mechanisms (S ₁ ) and (S ₂ ) so as to shut them off simultaneously or one of them. ), The above-mentioned safety management device for various fluid fuel pipes, which is provided with an earthquake sensor, various sensors of the device, and the device.

[0006]

FIG. 1 shows an example of a method and a device for safety of various fluid fuel pipes according to the present invention.
(H) and the storage area (L) of the propane gas cylinder (G), which is separated from it, are connected by a fuel gas supply pipe (P). The gas meter mechanism (S ₂ ) that shuts off the gas at the building (H)
And a gas meter mechanism (S ₁ ) that shuts off the gas is provided near the propane gas cylinder (G) [upstream of the pipeline (P)]. Connect to the controller (C) to be placed separately with the electric signal wiring (e),
It is controlled by this controller (C). That is, the flow rate signals of the gas flowing through the gas meter mechanisms (S ₁ ) and (S ₂ ) on the upstream and downstream sides are input to the controller (C), and the signals are continuously compared at all times. The difference between the values is learned and stored (temperature difference,
The range of the difference due to the pressure difference of the fluid is known in advance by regular measurement), and the range is constantly monitored, and a gas leak location (X) is generated and there is a gas leak. When the difference of the gas meter is exceeded, that is, when the value exceeds the normal value, a function for determining that the gas meter is abnormal is provided.
_{When an} abnormal difference occurs between the flow rates of ₁ ) and (S ₂ ), the controller (C) issues a command to close the valve to shut off the gas,
Emitted to the gas meter mechanism (S ₁ ), (S ₂ ) on the downstream side and shut off (on the upstream side or simultaneously). When there are a plurality of gas meter mechanisms (S ₂ ) on the downstream side (for example, in an example of an apartment house), the integrated value of the plurality of gas meter mechanisms (S ₂ ),. Compare in the same way.

Such damage to the piping (P) can occur due to corrosion of the piping itself, disasters such as earthquakes, and other factors such as the movement of heavy objects such as vehicles and vibrations. It is a safety measure when damage occurs. As a result, the use of fire in the building (H) is stopped, no extra gas flows into the building (H), and even if damage or damage occurs in the middle of the piping (P), Since the upstream side is shut off by the gas meter mechanism (S ₁ ), the stored propane gas cylinder
The gas in (G) does not flow out.

Further, if the controller (C) is equipped with, for example, an earthquake detector (a device that detects an earthquake motion and shuts off electrical contacts of a combustion device, etc.), an earthquake causes a shaking above a certain seismic intensity. When the above-mentioned earthquake detector is activated, the controller (C) that receives the input
Can issue a gas shutoff command to the gas meter mechanisms (S ₁ ) and (S ₂ ) on the upstream side (and, if necessary, on the downstream side), and can shut off either or one of them. In addition to the earthquake sensor, as a sensor for other applications, it may be activated by a fire sensor, the same device, a CO gas sensor, the same device,
Choose them according to different types of disaster prevention. Also, at night or when going out, as a safety measure, the resident may send a command by a switch in the room to operate the controller (C).

[0009]

According to the present invention, the flow rate on the upstream side and the downstream side of the pipeline is continuously adjusted in case the pipeline itself is damaged in the middle of the pipeline due to corrosion, damage or earthquake of the pipeline. When the flow rate difference due to leakage of the fluid fuel in the middle of the pipe line occurs immediately by monitoring and comparing, the abnormality is immediately identified, and the shut-off function is activated, thereby preventing the supplied fluid fuel from leaking. In this way, it is possible to obtain a safety management method and a device for piping of various fluid fuels, which ensure safety and do not cause outflow from the stored fuel container. This is an extremely effective safety management measure for various fluid fuel piping in the event of an earthquake or other disaster or emergency.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a safety management device for a pipe line of various fluid fuels according to the present invention.

FIG. 2 is an explanatory view of a conventional propane gas pipe line.

[Description of numbering]

(H) Building (L) Storage area (G) Propane gas cylinder (S), (S ₁ ), (S ₂ ) Gas meter mechanism (C) Controller (P) Piping line (X) Location of gas leak

Claims (4)

[Claims] A pipe is connected between a building and a storage location for a fluid fuel separated therefrom, and a meter mechanism is provided downstream of the pipeline near the building, and a meter mechanism with a shutoff function is provided near the fuel storage area. Provided on the upstream side of the pipeline, connected to a controller that separately arranges them,
The flow rate of fuel flowing through the downstream meter mechanism is continuously compared at all times, and when an abnormal difference occurs, a fuel supply cutoff command is issued to the upstream meter mechanism to shut it off. A method for safety management of various fluid fuel pipes, characterized in that: 2. A meter mechanism having a pipe connection between a building and a storage location of a fluid fuel separated from the building, and optionally having a function of shutting off supplied fuel is provided on the downstream side of the pipe line near the building. A meter mechanism with a filter is provided on the upstream side of the pipe line near the fuel storage area, and is connected to a controller that separately arranges them, and the controller continuously adjusts the flow rate of the fuel flowing through the upstream and downstream meter mechanisms. When an abnormal difference occurs with respect to the normal flow rate comparison value, a command to cut off the fuel supply is issued to the upstream and downstream meter mechanisms to shut them off simultaneously. A method for safety management of various fluid fuel pipe lines, characterized in that: 3. A meter mechanism having a function of connecting a building and a storage area of a fluid fuel to be installed separately from the building by a pipe line and shutting off supply fuel as necessary is provided downstream of the pipe line near the building. A meter mechanism with a shut-off function to install and shut off the supply fuel is installed on the upstream side of the pipe line near the fuel storage area and connected to a separately arranged controller, and this controller is connected to each of the upstream and downstream meters The flow rate of the gas flowing through the mechanism is continuously compared at all times, and the flow rate comparison value at normal time is stored. If a special difference occurs, a function to judge it as abnormal is provided. A safety device for various fluid fuel pipes, characterized in that when a significant difference occurs, a command to shut off supplied fuel is issued to each of the upstream and downstream meter mechanisms and shut off. 4. The safety device for various fluid fuel piping according to claim 3, wherein the controller is equipped with an earthquake sensor, the device, various sensors, and the device.