JP4658718B2 - Gas supply system - Google Patents

Description

  The present invention relates to a gas supply system, and more particularly, to a gas supply system suitable for urgently responding to demand in a shelter at the time of a disaster.

  Several systems have been proposed for urgently supplying fuel gas to customers in the event of a disaster such as an earthquake. For example, in Patent Document 1, when a gas conduit network connecting a gas storage station or a gas generation factory and a demand destination is damaged, a gas cylinder in which high-pressure fuel gas is sealed in a gas conduit downstream from the damaged portion is decompressed. There is shown a method of supplying fuel gas, which is communicated through a mechanism and reduced to substantially the same pressure as the supply pressure at the communication location, to the gas conduit network. Further, Patent Document 2 discloses that when a natural gas is supplied from a portable storage gas unit filled with high-pressure natural gas under reduced pressure, the pressure reducing valve freezes due to a temperature drop due to gas expansion. There has been proposed a method for preventing the problem by providing a hot water supply unit that uses as a heat source. Further, in Patent Document 3, a branch pipe is provided between a check valve for individual consumer of a conduit for supplying fuel gas to each consumer and a metering emergency circuit breaker for individual consumer, and the fuel gas is provided in the branch pipe. An example is shown in which a gas storage container capable of storing and releasing gas is connected via a pressure control valve.

Japanese Patent Laid-Open No. 10-169900 (2nd, 4th page, FIG. 4) Japanese Patent Laid-Open No. 10-279968 (3rd, 4th page, FIG. 1) Japanese Patent Laid-Open No. 10-299995 (second page, FIG. 1)

  When the supply of fuel gas through the existing gas conduit network is stopped, such as during an earthquake or other disaster, or when there is an urgent request to supply fuel gas to a location where no gas conduit is installed, the gas operator By carrying a 50 kg container of LPG (liquefied petroleum gas, hereinafter referred to as “LP gas” where appropriate) and temporarily installing it, it was possible to boil it. However, since it takes some time to install a water heater and to be able to supply hot water, it was not sufficient as an emergency measure. In addition, it was only possible to respond on a small scale, and it ended up being a temporary response.

  As a disaster response, it is not sufficient to be able to cook for disaster victims in emergency evacuation areas, etc., and it is desirable to be able to supply hot water and electric power together, but to supply them The actual situation is that emergency facilities are not always available.

  The technique of patent document 1 supplies gas for fuel using the existing gas conduit network, and when the soundness of the conduit network buried underground is impaired like the case of an earthquake etc. It was not suitable for urgently supplying fuel gas. In the method described in Patent Document 2, it is necessary to prepare another type of gas as a gas heating source in addition to the gas to be supplied for fuel, and there is a drawback that management becomes complicated. In addition, the technology of Patent Document 3 considers the supply of fuel gas to individual consumers. In order to supply fuel gas urgently to people gathered at a specific location such as an evacuation site during a disaster Was not suitable. Furthermore, in the event of a disaster, not only the supply of fuel gas but also the supply of hot water is required, but the hot water supply equipment has not been considered.

  An object of the present invention is to realize a gas supply system capable of promptly supplying fuel gas for cooking to disaster victims and evacuees gathered at an evacuation site or the like when a disaster such as an earthquake or a typhoon occurs.

  In order to solve the above problems, a gas supply system according to the present invention includes a gas container storing liquefied gas, a gas conduit communicating with a gas phase portion of the gas container, and a regulator connected to the gas conduit. And a main header for distributing the gas connected to the downstream side of the regulator, the main header having a pipe connection port to which a pipe for supplying gas to the gas consuming device is connected, and an emergency It is characterized in that it is provided with a gas outlet from which gas can be taken out sometimes.

  The gas supply system of the present invention supplies gas to a normal gas consuming device and is fixedly installed. The main header communicated with the gas phase part of the gas container is provided with a spare gas outlet for emergency use as a heat source and power source of a facility that serves as a refuge for the victim in the event of a disaster. . In addition, a portable subheader equipped with a gas intake connection port that communicates with the gas extraction port of the main header and a gas outlet for gas extraction, and a connection between the gas extraction port of the main header and the gas intake connection port of the subheader. The connecting hose to be stored may be stored in an emergency facility such as an evacuation center.

  In this way, when disaster victims gather and evacuate at the time of a disaster, the portable subheader stored in the evacuation facility is taken out and installed to become the evacuation site. If the subheader is connected to the gas outlet of the main header, which is permanently installed in the facility, with a connection hose, the LP gas for fuel can be supplied immediately.

  In addition, a portable hot water supply unit having a gas intake connection port, a hot water heater using LP gas as a heat source mounted on a portable base, and a pump for pressurizing the feed water, and a gas outlet port of the main header, If the connection hose connecting the connection port for gas intake of the portable hot water supply unit is stored in the facility as an emergency, hot water supply can be started promptly. Since the pressurizing pump is incorporated in the portable hot water supply unit, it is possible to cope with a case where a temporary water tank having no water pressure is used as a water supply source.

  In addition, a system unit for LP gas supply in an emergency can be configured including a gas engine-driven LPG generator or fuel cell unit and a connection hose connecting them to the gas outlet connection port of the main header. For example, even if power transmission to the evacuation center is stopped, at least power for lighting is secured.

  The gas container for storing the LP gas in bulk may be configured to be movable with a fillable amount of less than 300 kg. In this case, it is desirable that accessory devices such as a regulator and a gas meter are built in the protector so as to prevent tampering with the device and avoid the direct influence of the falling object on the device.

  The fuel cell unit preferably includes a fuel cell main body and a hot water tank, and may include a pump.

  Furthermore, if the sub-header is combined with a gas stove unit composed of a plurality of gas stoves, it is not necessary to prepare a gas stove separately. The sub-header and gas stove are connected using a low-pressure hose with a gas outlet system.

  According to the present invention, when a disaster such as an earthquake or a typhoon occurs, fuel gas for cooking can be promptly supplied to disaster victims and refugees gathered at an evacuation site or the like.

<Embodiment 1>
Embodiment 1 of an emergency LP gas supply system unit to which a gas supply system according to the present invention is applied will be described below with reference to the drawings. FIG. 1 shows a state in which the emergency LP gas supply correspondence system unit according to the present embodiment is arranged and connected in a use state. The emergency LP gas supply system unit shown in the figure includes a bulk storage unit 100 having a gas container for storing liquefied gas, a subheader 200 connected to the bulk storage unit 100 by a connection hose 500, and a bulk by a connection hose 500. The portable hot water supply unit 300 connected to the storage tank unit 100 and the LPG generator 400 connected to the bulk storage tank unit 100 by a connection hose 500 are configured.

  The bulk storage unit 100 includes a 1000 kg type bulk storage tank 101, a supply device, and a main header, and is installed to supply LP gas to a public facility designated as an emergency evacuation site (hereinafter referred to as an installation facility). It is placed and fixed on the concrete foundation. Even if it is not a public facility, it may be a private facility as long as it normally uses LP gas, and if it uses a facility installed to supply LP gas there Good. In any case, the bulk storage tank unit 100 is arranged and fixed on the concrete foundation.

  FIG. 2 shows a plan view of the bulk storage tank unit 100, and FIG. 3 shows a front view of the bulk storage tank unit 100, respectively.

  An LP gas extraction line is connected to the upper surface of the 1000 kg type bulk storage tank 101, and this LP gas extraction line is branched into two after passing through the bulk supply device 102 and the medium / low pressure flexible pipe 104. One of the branched LP gas take-out pipelines passes through an intermediate / low pressure ball valve 105, a shutoff valve 110, an intermediate / low pressure ball valve 105, an intermediate / low pressure ball valve 105, a two-stage secondary regulator 109, and an intermediate / low pressure ball valve 106. The other is connected to the main header via an intermediate / low pressure ball valve 105, an intermediate / low pressure ball valve 105, a two-stage secondary regulator 109, and an intermediate / low pressure ball valve 106.

  The LP gas take-out pipe branched into two is connected to each other by a bypass pipe on the upstream side of the medium / low pressure ball valve 105 entering the second-stage secondary regulator 109, and the pressure in the pipe is measured by this bypass pipe. A pressure gauge 107 is attached. In addition, a pressure gauge set 108 for measuring the pressure in the pipe line is also attached to a position on the downstream side of the low-pressure ball valve 106 of the LP gas extraction pipe line on the side where the shutoff valve 110 is provided.

  The supply device is constituted by the LP gas take-out pipeline, the intervening valves and equipment, and the attached sensor 111, but these are support bases not shown, and the concrete on which the 1000 kg bulk storage tank 101 is fixed. Fixed and supported on the foundation.

  The main header includes a header pipe 115 to which the two systems of LP gas take-out pipes are connected, and five LP gas take-out branch pipes provided on the header pipe 115 so as to be branched in parallel to each other in the horizontal direction. , A ball valve 112 interposed in each of the branch pipes, a coupler (male) 113 which is a gas outlet connection port attached to four ends of the LP gas outlet branch pipe, and a header pipe 115. A drain pipe that is provided on the bottom of the pipe and is provided with a ball valve 114 interposed therebetween, a support base 116 that supports the header pipe 115 on the concrete foundation, a header pipe 115, a branch pipe for extracting LP gas, and a ball valve. 112 and a cosmetic box 117 that covers the coupler (male) 113.

  Of the branch pipes for extracting LP gas, four pipes with the coupler (male) 113 are used for taking out the LP gas in an emergency, and for taking out the LP gas without the coupler (male) 113 attached. The branch pipes are connected to pipes (not shown) for supplying LP gas used in the air conditioning equipment, cooking equipment, and the like of this facility to the necessary locations.

  In addition, the wall surface of the cosmetic box 117 facing the coupler (male) 113 is a double door, and is opened when the coupler (male) 113 is used.

  Further, a box-shaped protector 118 is provided on the upper surface of the 1000 kg type bulk storage tank 101 so as to surround the connecting portion to the reservoir of the LP gas take-out pipeline and the supply device 102, and the gas leakage detector is provided on the inner wall surface thereof. 103 is attached.

  As shown in FIG. 4, the subheader 200 is attached to the portable support table 201 and the support table 201 in a posture that becomes horizontal when the support table 201 is placed on a flat surface. The closed sub-header pipe 202, the two outlet branch pipes 207 branched in parallel to the upper side of the sub-header pipe 202, and the ball valve 203 interposed, respectively, and the gas attached to the respective ends of the outlet branch pipe 207 The outlet 204 is configured to include a ball valve 205 attached to the other end of the subheader pipe 202 and a coupler (male) 206 that is a gas intake connection port coupled to the ball valve 205. The coupler (male) 206 is the same as the coupler (male) 113.

  In the present embodiment, three sub-headers 200 are provided and stored in the installation facility, and are placed in a place where they are taken out from the storage place and cooked when necessary.

  FIG. 5 shows a portable hot water supply unit 300. The portable water heater unit 300 includes a portable water heater base 301, a water heater 302 attached to the water heater base 301 using LP gas as a heat source, and a water heater-hose connected to a gas hose connection port of the water heater 302. It includes a connection flexible cable 303, a disaster hose connection coupler (male) 304 that is a gas intake connection port attached to the end of the water heater-hose connection flexible cable 303, and a water supply hose not shown. Has been. The disaster hose connection coupler (male) 304 is the same as the coupler (male) 113.

  The water heater frame 301 has a frame structure that looks like a staircase from the front and a triangle from the side, and has a height of about 1.2 m and a width of about 0.6 m. A fall prevention plate extending over the entire width from the frame structure to the front side is coupled to the bottom portion, and the depth including the fall prevention plate is about 0.4 m. When the portable hot water supply unit 300 is placed at a place of use, it is desirable to place heavy objects such as sandbags on the fall prevention plate to prevent the stand from falling over.

  In the present embodiment, a water supply hose (not shown) is connected to the water supply connection port of the water heater 302, but a water supply pump is installed in the water heater frame 301 and the discharge side is connected to the water supply of the water heater 302. It is desirable to connect to the mouth and connect a hose joint to the inlet side. Then, in the event of a disaster, when the water supply is cut off, the water heater can be operated by absorbing water from the temporary storage tank 600 or the like with a pump. However, in that case, it is necessary to prepare a long hose that can withstand negative pressure. If the water supply pump is made portable and the pump discharge side and the water supply connection port of the water heater 302 are connected by a long hose, the hose that can withstand negative pressure can be shortened.

  The LPG generator 400 is a portable generator that generates 100 V of power with an engine that uses LP gas as fuel, and is not shown. The same coupler (male) as the coupler (male) 113 and the coupler (male) 206 is attached to the LP gas inlet. As shown in FIG. 1, the power source of portable hot water supply unit 300 may be taken from LPG generator 400.

  FIG. 6 shows a connection hose 500. The connection hose 500 includes a coupler (male) 113 for the main header and a coupler (male) 206 for the subheader 200, a coupler (male) 113 for the main header, and a hose connection coupler (male) 304 for the portable hot water supply unit 300 in a disaster. This is an emergency gas hose made of reinforced rubber that connects the coupler (male) 113 of the main header and the LP gas intake port of the LPG generator 400, and couplers that can be coupled to the coupler (male) 113 of the main header at both ends. Female) 501 is attached. The length is such that the sub header 200, the portable hot water supply unit 300 or the LPG generator 400 can be connected between the planned installation position at the time of a disaster and the installation position of the 1000 kg bulk storage tank 101 without any trouble in traffic and work. It is.

  Public facilities such as public halls and meetinghouses, or business bases and factories of private companies are likely to be used as evacuation sites in the event of a disaster. Therefore, when an air-conditioning facility or a cooking facility that uses LP gas as a power source or a heat source is installed in such a place, an LP gas bulk storage tank that supplies LP gas to those facilities is shown in this embodiment. If it is part of a system unit for emergency LP gas supply, it can be used only for emergencies as cooking fuel for emergency response, hot water for temporary baths, generator fuel for lighting, etc. Efficient response at the time of disaster becomes possible at low cost.

According to the present embodiment, the gas outlet connection port of the main header of the 1000 kg type bulk storage tank 101 installed at the evacuation site at the time of disaster, and the gas inlet of the sub header 200, the portable hot water supply unit 300 or the LPG generator 400 are used. Since the connection port can be connected with a connection hose stored with them, the 1000 kg bulk storage tank 101 can be used as an LP gas supply source to the evacuation site as it is, and there is a risk of delay in transportation of materials and equipment due to traffic congestion at the time of disaster. In addition, fuel gas, hot water supply, power supply, etc. can be promptly performed for evacuees.
<Embodiment 2>
Whereas the first embodiment uses the permanent bulk storage tank as it is for energy supply to evacuees during a disaster, the system unit for emergency LP gas supply according to the present embodiment is It is a permanent emergency response set that is always available at municipal public facilities.

  The disaster emergency response set according to the present embodiment includes a portable bulk container unit, a portable branch pipe and stove unit, a water heater unit or a fuel cell unit, and a connection hose.

  The bulk container unit has a size that can be filled and less than 300 kg and does not require permission from the jurisdiction of the fire department, etc., and is easy to move and easy to install. In addition, the protector is provided with attached supply devices, a regulator, and a gas meter, and a main header including a plurality of couplers (male) 113 as connection ports for gas extraction is also installed in the protector.

  The branch pipe and the stove unit are a combination of the sub-header 200 in Embodiment 1 and the gas hose and the gas hose that connects the sub-header 200 and the gas stove in a gas outlet manner.

  The water heater unit is a combination of the portable hot water supply unit 300 of the first embodiment and a water supply pump, and the fuel cell unit accommodates hot water generated using the exhaust heat of the fuel cell main body and the fuel cell. It is configured to include a hot water tank. In some cases, the fuel cell unit may include a pump for supplying hot water under pressure. Note that the fuel cell unit may include a GHP (gas heat pump) when only power generation is required.

  As shown in this embodiment, a disaster emergency response set consisting of a small bulk container unit, branch pipe and stove unit, water heater unit or fuel cell unit, connection hose, etc. requires less space for storage. By having a meetinghouse and a public hall permanently, it is easy to respond to the initial response in the event of a disaster.

  According to the present embodiment, a portable bulk container unit, a branch pipe and stove unit, a water heater unit or a fuel cell unit are always provided in public facilities in municipalities, and a gas outlet connection port of the bulk container unit is provided. In addition, a connecting hose for connecting the gas intake connection port of the branch pipe and stove unit, water heater unit, or fuel cell unit is also provided, so it is easy to place the LP gas supply source at the evacuation site in the event of a disaster Thus, it becomes possible to promptly perform fuel gas, hot water supply, power supply, etc. to evacuees.

BRIEF DESCRIPTION OF THE DRAWINGS It is an arrangement | positioning figure which shows the whole structure of the system unit for emergency LP gas supply which concerns on Embodiment 1 to which the gas supply system of this invention is applied. It is a top view which shows the detail of the 1000 kg type bulk storage tank shown in FIG. It is a front view which shows the detail of the 1000 kg type bulk storage tank shown in FIG. It is a front view which shows the detail of the subheader shown in FIG. It is the front view and side view which show the detail of the portable hot-water supply unit shown in FIG. It is a conceptual diagram which shows the connection hose shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Bulk storage unit 101 1000kg type bulk storage tank 102 Supply apparatus 103 Gas leak detector 104 Medium-low pressure flexible pipe 105,106 Medium-low pressure ball valve 107,108 Pressure gauge set 109 Two-stage secondary regulator 110 Shut-off valve 111 Attached sensor 112 Ball Valve 113 Coupler (male)
114 Ball valve 115 Header pipe 116 Support base 117 Cosmetic box 118 Protector 200 Subheader 201 Support base 202 Subheader pipe 203 Ball valve 204 Gas outlet 205 Ball valve 206 Coupler (male)
207 Take-out branch pipe 300 Portable hot water supply unit 301 Water heater frame 302 Water heater 303 Hot water-hose connection flexible cable 304 Disaster hose connection coupler (male)
400 LPG generator 500 Connection hose 501 Coupler (female)
600 water tank

Claims (2)

Distributing a gas container storing liquefied gas, a gas pipe connected to the gas phase of the gas container, a regulator connected to the gas pipe, and a gas connected to the downstream side of the regulator A main header, and the main header is provided with a pipe connection port to which a pipe for supplying gas to the gas consuming device is connected, and a gas outlet from which gas can be taken out in an emergency ,
A portable subheader having a gas intake connection port communicating with the gas extraction port of the main header and a gas outlet for gas extraction, the gas extraction port of the main header, and a gas intake connection port of the subheader A gas supply system comprising a connection hose for connecting the connection hose . 2. The gas supply system according to claim 1 , wherein the gas container is fixedly installed in a site of a consumer of the liquefied gas, and the liquefied gas is supplied to a gas consuming device in the site at the pipe connection port of the main header. A gas supply system, wherein a pipe coupled to the coupler of the connection hose is attached to at least one of the gas outlets of the main header.

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