JPH10331212A - Urban type large-area fire-extinguishing exclusive piping system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure water required for fire extinguishing sufficiently, by laying a distributing base pipe from a pump station with a private power generator installed to headwaters such as the sea, a river, etc., to a built-up area and disposing a remotely controllable on-off valve at the base section of a branch pipe. SOLUTION: A pump station 1 with a private power generator is mounted near headwaters such as the sea, lakes and marshes, etc., and distributing base pipes 2 are laid radially towards a built-up area. The pump station 1 is changed over automatically to private power generation when power supply from a commercial power supply is interrupted. Each distributing base pipe 2 is laid on the central reserve of a main road or in place of curbs partitioning a roadway and a pavement, and the greater part are exposed onto a ground surface. On-off valves 4 are set up at the base sections of branch pipes 3, and manual open-close devices and electric open-close devices are fitted. Power is supplied from a commercial power supply or the private power generator of the pump station 1 by power cables laid along the distributing base pipes 2 at the emergency time, and the commercial power supply or the private power generator is controlled remotely. Accordingly, piping paths are most shortened, and a large cost reduction effect is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an urban-type wide-area fire-extinguishing piping system that can cope with a fire that occurs simultaneously and frequently, such as an earthquake disaster.

[0002]

2. Description of the Related Art Conventionally, as a main fire extinguishing water supply in a city, a water supply facility is used, a short pipe is branched from a water distribution pipe to obtain water from a fire hydrant provided on the ground, or a fire prevention water tank is used. It is known that they are installed to obtain water use from now on.

Further, Japanese Patent Application Laid-Open No. Hei 5-337213 discloses that neutralized water is added to water obtained by using a filter for converting seawater into water, and the water is pumped up and used as fire fighting water for forest fires. A fire extinguishing system is disclosed.

[0004]

However, there are the following problems in obtaining water from a water supply facility or a fire prevention water tank. In the case of obtaining water from water supply facilities Since the design is not designed to cope with simultaneous multiple disasters such as earthquake disasters, if fires occur at the same time, the water volume and water pressure required for fire extinguishing and discharging can be obtained at various locations. There is no serious situation. The piping route from the water source to the fire hydrant in the city area is long, and the pipeline itself is susceptible to earthquake damage. Securing drinking water at the time of the disaster and water for fire fighting conflict. To obtain water use from fire prevention tanks Fire prevention tanks need to be constructed in densely populated urban areas for the purpose of use. However, it is not always possible to secure sufficient water storage capacity for individual water tanks. Each fire tank is simply scattered,
We cannot support mutual accommodation of water storage.

[0005] In the case of seawater desalination, it is not possible to desalinate a large amount of water in real time. Therefore, facilities for storing desalinated water in advance are actually required. Still exists.

The technical problems of the present invention are that drinking water and fire-fighting water do not conflict with each other, require almost no new land acquisition for construction, do not suffer seismic damage to pipelines, and have a simultaneous An object of the present invention is to make it possible to sufficiently secure a water amount and a water pressure necessary for fire extinguishing and discharging even if a fire occurs frequently.

[0007]

According to a first aspect of the present invention, there is provided an urban-type wide area fire-extinguishing dedicated piping system in which a water distribution base pipe connected to a water source such as the sea, river, lake or marsh via a pump station is laid in an urban area. An on-off valve capable of opening and closing a flow path is provided at a base of a branch pipe branched from a water distribution base pipe.
According to the first aspect of the present invention, since the fire extinguishing dedicated pipe is laid directly from the water source such as the sea, river, lake and marsh to the city area, the piping route is shortest, and a significant cost reduction effect can be obtained. In this way, the piping system that directly connects the water source such as the sea, rivers, lakes and marshes to the city area is a system that uses inexhaustible seawater etc. as fire fighting water in accordance with the national situation of Japan surrounded by the sea. Therefore, even if fires occur simultaneously and frequently as in the case of an earthquake disaster, it is possible to sufficiently secure the amount of water and the water pressure necessary for extinguishing and discharging water. Furthermore, since water is not consumed for fire extinguishing, it greatly contributes to securing valuable drinking water in the event of a disaster. Furthermore, by providing an on-off valve at the base of the branch pipe branched from the water distribution base pipe, it is possible to block water distribution, and it is possible to supply a large amount of fire extinguishing water to a section requiring fire extinguishing and discharging. it can.

[0008] Further, the urban-type wide-area fire-extinguishing dedicated piping system according to claim 2 of the present invention is provided with an in-house power generator at a pump station. According to the second aspect of the present invention, by providing the private power generator at the pump station, the pump can be started by the private power generator even when the power supply from the commercial power supply is cut off in the event of a disaster, and the reliability is improved. .

Further, in the piping system for exclusive use of urban wide-area fire extinguishing according to claim 3 of the present invention, the on-off valve has a manual opening and closing device and an electric opening and closing device, and is laid along the pipeline from the pump station in an emergency. Power is supplied from a commercial power supply or a private power generator installed at a pump station via a power supply cable, and the power supply cable can be remotely operated.
According to the third aspect of the present invention, since the on-off valve can be remotely operated at the pump station, the system can be automated, and even if a failure that the on-off valve cannot be opened by remote operation occurs, the manual operation can be performed. Thus, the valve can be reliably opened.

According to a fourth aspect of the present invention, there is provided a plumbing system dedicated to urban wide-area fire extinguishing, wherein the pipe is replaced with a curb on a median strip excluding a crossing portion of an intersection of a main road or a curb which defines a roadway and a pavement. It is laid and used as a surface exposed pipe.
In the invention of claim 4, most of the piping is laid on the median strip of the main arterial road or in place of the curb line, so that the laying cost is reduced and daily visual inspection becomes possible. , Maintenance is easy. Furthermore, since construction requires almost no new land acquisition and construction can be performed in a relatively short period of time, the system can be quickly introduced and constructed even in a city where an imminent large earthquake is expected. Furthermore, since most of the pipes are exposed surface pipes, they are not constrained by the ground, and even if a city suffers a severe earthquake, the pipes do not suffer earthquake damage and lose the imposed disaster prevention function Nothing. Furthermore, even if some branch pipes suffer earthquake damage, other branch pipes can be supported, and branch pipes damaged by earthquake can be recovered in a short time.

Further, in the piping system for exclusive use of urban wide-area fire extinguishing according to claim 5 of the present invention, at least a portion of the pipeline buried in the soil is made of a synthetic resin pipe. In the invention of claim 5, if a polyethylene pipe is used, for example, in at least the portion of the pipeline buried in the soil, the corrosion resistance and the earthquake resistance are improved, and the maintenance management becomes easy. In other words, when water sources (seawater, urban rivers, lakes and marshes) that can be easily obtained in large amounts in urban areas or in the suburbs of non-aqueous pipeline facilities as in this system, the water quality is generally high. Since the pipe is extremely bad compared to water and has a property of easily corroding the pipe, it is desirable that the pipe has corrosion resistance against such water quality. In addition, it is necessary to ensure that the pipe buried in the soil withstands crustal deformation and can reliably function as a pipe. Therefore, when a synthetic resin pipe such as a polyethylene pipe is used for at least the underground portion of the pipe as in the invention of claim 5, for example, a stainless pipe or a corrosion-resistant coated steel pipe is used for the pipe. In comparison, a low-cost system having excellent corrosion resistance can be constructed. Further, for example, a synthetic resin pipe such as a polyethylene pipe,
Since it flexibly follows the crustal deformation during a large earthquake and has excellent earthquake resistance, it is possible to prevent accidents such as breakage or falling off, as in ductile cast iron pipes, for example. In the unlikely event that the synthetic resin pipe is damaged, the on-site water stoppage and partial repair can be performed much more easily than with a metal pipe.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, the present invention will be described with reference to the illustrated embodiments. FIG. 1 is a system configuration diagram showing an urban-type wide area fire extinguishing dedicated piping system according to a first embodiment of the present invention.

In the piping system for exclusive use of an urban wide-area fire extinguishing system of this embodiment, a pump station 1 equipped with a private power generator is provided near a water source such as a sea or a lake with a curved shore. A water distribution base pipe 2 extends radially toward the city and is laid.

The pump station 1 is normally supplied with power from a commercial power supply to drive the pump. However, when the power supply from the commercial power supply is cut off in the event of a disaster, the pump station 1 is automatically turned on. , And the pump is started by the private power generator.

Each distribution pipe 2 is laid on a median strip of a main road or in place of a curb that defines a pavement and a pavement. Most of the pipes are exposed on the ground, but are buried at the intersection of intersections. ing. In addition, a plurality of branch pipes 3 are connected to each water distribution base pipe 2, and the base of each branch pipe 3 is
An on-off valve 4 that can open and close the flow path is provided. Branch pipe 3
For example, the installation location, the direction of the extension direction, and the pitch between the branch pipes are determined according to the cityscape around the water distribution main pipe such as densely populated areas, but it is possible to add it later. Needless to say. Furthermore, water distribution base pipe 2 and branch pipe 3
At least the part buried in the soil is made of synthetic resin pipe (here, polyethylene pipe is used), so that corrosion resistance and earthquake resistance can be obtained, but basically the entire pipeline is made of synthetic resin pipe It goes without saying that it is possible to do so.

The opening / closing valve 4 has a manual opening / closing device and an electric opening / closing device.
Power is supplied from a commercial power supply or a private power generator installed at a pump station via a power cable laid along the line, and the power is remotely controlled. Reference numeral 5 in the drawing denotes a water collection pipe of the pump station 1.

The urban-type wide-area fire-extinguishing piping system of the present embodiment is suitable for a city, such as Tokyo, whose city area spreads radially around the coastline.

Further, since the water distribution base pipe 2 dedicated to fire extinguishing is laid directly from a water source such as the sea or a lake to the city area, the piping route is shortest and a significant cost reduction effect can be obtained.

In addition, since inexhaustible seawater and the like are used as fire-fighting water, even if fires occur simultaneously and frequently as in the case of an earthquake disaster, it is possible to sufficiently secure the water amount and water pressure necessary for fire-fighting and discharging.

Further, since tap water is not consumed for fire extinguishing, it greatly contributes to securing valuable drinking water in the event of a disaster.

Further, by disposing the on-off valve 4 at the base of the branch pipe 3 branched from the water distribution base pipe 2, it becomes possible to block the distribution of water, and a large amount of fire-fighting Can be supplied.

In addition, by providing a private power generator in the pump station 1, even if power supply from the commercial power supply is cut off in the event of a disaster, the pump can be started by the private power generator, thereby improving reliability.

The on-off valve 4 has an electric opening and closing device, and can be remotely operated on the pump station 1 side by a power cable laid from the pump station 1 along the water distribution base pipe 2, so that the system can be automated. . Further, since the opening / closing valve 4 is also provided with a manual opening / closing device, even if a failure that cannot be opened by remote operation occurs, the valve can be reliably opened by manual operation.

Further, since most of the piping such as the water distribution base pipe 2 is laid on the median strip of the main highway or in place of the curb line, the laying cost is reduced and at the same time, daily visual inspection is performed. And maintenance becomes easy. Further, since the construction requires almost no new land acquisition and can be constructed in a relatively short period of time, the system can be quickly introduced and constructed even in a city where an imminent large earthquake is expected.

Further, since most of the piping such as the water distribution base pipe 2 is exposed on the ground surface, the piping is not restricted by the ground and the piping is damaged by the earthquake even when the city is severely damaged. And no loss of imposed disaster prevention functions.
Further, even if some of the branch pipes 3 are damaged by the earthquake, the branch pipes 3 can be supported by the branch pipes 3 and the branch pipes which have been damaged by the earthquake can be recovered in a short time.

Further, since at least a portion of each of the water distribution base pipes 2 and the branch pipes 3 buried in the soil is made of a synthetic resin pipe such as a polyethylene pipe, corrosion resistance and earthquake resistance are obtained. Has become easier. In other words, even if the water quality of seawater, urban rivers, lakes and marshes is generally used as a water source, as in the case of this system, the water quality is extremely poor compared to that of clean water. In comparison with this, it is easy to manage the underground pipe portion requiring time for maintenance and inspection, and a low-cost system can be constructed.
Furthermore, for example, synthetic resin pipes such as polyethylene pipes flexibly follow crustal deformation during a large earthquake and are excellent in earthquake resistance, so that accidents such as breakage or falling off like ductile cast iron pipes can be prevented beforehand. . In the unlikely event that the synthetic resin pipe is damaged, the on-site water stoppage and partial repair can be performed much more easily than a metal pipe, so the recovery is excellent. It is to be noted that the entire pipeline can be basically formed of a synthetic resin pipe, in which case the cost can be significantly reduced.

Embodiment 2 FIG. FIG. 2 is a system configuration diagram showing an urban-type wide area fire extinguishing dedicated piping system according to a second embodiment of the present invention. In the drawing, the same reference numerals are used for parts corresponding to the above-described first embodiment (FIG. 1). It is attached.

The urban-type wide-area fire-extinguishing piping system of this embodiment is an example in which the present system is applied to a city where an urban area develops in a fan-like manner at an estuary (Nakashu) where rivers flow into the sea or rivers in parallel. In addition, the pump station 1 and the water distribution base pipe 2 are independent for each Nakashu, and a plurality of the present systems are arranged side by side as a whole. Other configurations,
That is, (a) each pump station 1 is provided with a private power generator, and (b) each water distribution base pipe 2 is laid on a median strip of a main road or in place of a curb that defines a roadway and a pavement. The part is a surface exposed pipe,
(C) a plurality of branch pipes 3 are connected to each water distribution base pipe 2, and at least a portion of the water distribution base pipe 2 and the branch pipe 3 buried in the soil is made of a synthetic resin pipe such as a polyethylene pipe; (D) On / off valve 4 having a manual opening / closing device and an electric opening / closing device is arranged at the base of each branch pipe 3, and the opening operation of the opening / closing valve 4 can be performed manually or remotely at the pump station 1. Is the same as that of the first embodiment.

The operational effects of the urban wide area fire fighting dedicated piping system of this embodiment are the same as those of the first embodiment. That is, (a) The piping route from the water source to the city area is shortest, and a significant cost reduction effect can be obtained. (B) The securing of drinking water and the fire extinguishing water do not conflict with each other, and even if fires occur frequently at the same time, it is possible to sufficiently secure the amount of water and water pressure required for fire extinguishing and discharging. (C) The distribution valve can be blocked by an on-off valve provided at the base of the branch pipe, and a large amount of fire extinguishing water can be supplied to a section requiring fire extinguishing and discharging. (D) Even if the power supply from commercial power is cut off during a disaster,
The pump can be started by the private power generator, and the reliability is improved. (E) The on-off valve can be remotely operated on the pump station side, so that the system can be automated, and even if a failure that cannot be opened by remote operation occurs, the valve can be reliably opened by manual operation. (F) Most of the pipes are exposed to the surface, which lowers the cost of laying, enables daily visual inspection, and facilitates maintenance. (G) Mutual support of fire extinguishing water can be provided between branch pipes. (H) Uses water from seawater, urban rivers, lakes and marshes where the water quality is extremely poor compared to clean water since the piping in the underground part that requires more time for maintenance and inspection than the exposed surface piping does not corrode. can do.

Embodiment 3 FIG. 3 is a system configuration diagram showing an urban-type wide-area fire-extinguishing piping system according to a third embodiment of the present invention. In the drawing, the same reference numerals are used for parts corresponding to the above-described first embodiment (FIG. 1). It is attached.

The urban-type wide-area fire-extinguishing piping system according to this embodiment is a system in which the present invention is applied to a city in which a city area is elongated between a hill and a water source such as the sea or a lake. A pump station 1 is installed near each water source, and the water distribution base pipe 2 is arranged like a fish bone as a whole. Other configurations, that is, the configurations (a), (b), (c), and (d) are the same as those in the first embodiment.

In the urban-type wide area fire-extinguishing piping system of this embodiment, basically, a plurality of (here, two) pump stations 1 are installed for one water distribution base pipe 2, so that the reliability is further improved. be able to. Other functions and effects, i.e., (a) (b) (c) (d) (e)
(F), (G) and (H) are the same as those of the first embodiment.

Embodiment 4 FIG. FIG. 4 is a system configuration diagram showing an urban-type wide-area fire-extinguishing dedicated piping system according to a fourth embodiment of the present invention. In the drawing, the same reference numerals are used for parts corresponding to the above-described first embodiment (FIG. 1). It is attached.

The urban-type wide-area fire-extinguishing piping system according to this embodiment is applied to a city in which an urban area is developed along a single river and arranged on both sides thereof by roads and parks. The pump station 1 is installed in each of the A, B, C, and D districts, and the A and B districts, which are divided on one side of the river, and the other Each of the water distribution base pipes 2 is connected to the communication pipes 2a and 2
b, so that the water distribution base pipes can support the exchange of fire extinguishing water between the water distribution base pipes.
Are arranged in blocks in a loop system. Other configurations, that is, the above (a), (b), and (c)
The configuration of (d) is the same as that of the first embodiment.

In the piping system for exclusive use of urban wide-area fire extinguishing of this embodiment, the water distribution base pipe 2 is laid in a loop in each of the city areas divided into blocks.
It is easier to support the exchange of fire extinguishing water between the branch pipes 3, and also here, basically, one water distribution base pipe 2 is provided.
Multiple pump stations 1 (two here)
Since it is installed, the reliability can be improved as in the above-described third embodiment. Other functions and effects, namely, (a) (b) (c) (d) (e) (f) (g)
(H) is the same as that of the first embodiment.

[0036]

As described above, according to the first aspect of the present invention, a dedicated fire extinguishing pipe is laid directly from a water source such as the sea, a river, a lake, or the like to an urban area. A drastic cost reduction effect can be obtained, and even if fires occur at the same time as in an earthquake disaster, it is possible to secure sufficient water volume and water pressure necessary for fire extinguishing and discharging, and valuable drinking water in the event of a disaster Greatly contributes to securing Furthermore, since the on-off valve is provided at the base of the branch pipe branched from the water distribution base pipe, it is possible to block the distribution of water and to supply a large amount of fire extinguishing water to a section requiring fire extinguishing and discharging.

According to the second aspect of the present invention, since the private power generator is provided at the pump station, the pump can be started by the private power generator even when the power supply from the commercial power supply is cut off in the event of a disaster. , Reliability can be improved.

According to the third aspect of the present invention, the open / close valve is provided with the manual open / close device and the electric open / close device, and is electrically connected to the pump station by the power cable laid along the pipeline. The on-off valve can be remotely operated at the pump station, thereby making it possible to automate the system. Even if a failure that would not open the on-off valve by remote operation occurs, the valve can be reliably opened by manual operation.

According to the fourth aspect of the present invention, most of the pipes are laid on the median strip of the main arterial road or in place of the curb line, so that most of the new land acquisition is required for construction. Not required, construction can be performed in a relatively short period of time, installation costs are low, and at the same time, daily visual inspection is possible and maintenance is easy. In addition, since most of the pipes are exposed to the surface, they are not constrained by the ground, and even if the city is severely damaged, the pipes will not be damaged by the earthquake and lose the imposed disaster prevention function. If a branch pipe suffers earthquake damage even if some of the branch pipes suffer earthquake damage, it is possible to receive support from other branch pipes and restore the branch pipe damaged by earthquake in a short period of time. Can be.

According to the fifth aspect of the present invention, since at least the portion of the pipeline buried in the soil is made of synthetic resin, corrosion resistance and earthquake resistance are improved, maintenance and management are easy, and a low-cost system is provided. Can be built.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an urban-type wide area fire extinguishing dedicated piping system according to a first embodiment of the present invention.

FIG. 2 is a system configuration diagram showing an urban-type wide-area fire extinguishing dedicated piping system according to a second embodiment of the present invention.

FIG. 3 is a system configuration diagram showing an urban-type wide-area fire extinguishing dedicated piping system according to a third embodiment of the present invention.

FIG. 4 is a system configuration diagram showing an urban-type wide area fire extinguishing dedicated piping system according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pump station 2 Water distribution base pipe 3 Branch pipe 4 On-off valve

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI E03B 7/07 E03B 7/07 A

Claims (5)

[Claims] 1. An on-off valve capable of opening and closing a flow passage at the base of a branch pipe branching from the water distribution base pipe, which is laid in a city area through a pump station to a water source such as the sea, river, lake or marsh. An urban-type wide-area fire-extinguishing piping system characterized by the installation of 2. The piping system exclusively for urban wide-area fire extinguishing according to claim 1, wherein a private power generator is provided at the pump station. 3. The on-off valve has a manual opening / closing device and an electric opening / closing device. In an emergency, power is supplied from a commercial power supply or a private power generator installed at the pump station by a power cable laid along a pipeline from the pump station. received,
The urban-type wide-area fire-extinguishing piping system according to claim 2, wherein the piping system is remotely operated. 4. The pipe according to claim 1, wherein the pipe is laid on a median strip excluding a crossing portion of an intersection of an arterial road or in place of a curb demarcating a roadway and a pavement, and is a surface exposed pipe. The urban-type wide-area fire-extinguishing piping system according to claim 3. 5. The piping system for exclusive use in urban wide-area fire extinguishing according to claim 1, wherein at least a portion of the pipeline buried in the soil is a synthetic resin pipe.