JP7473722B2 - Disaster prevention equipment at hydrogen stations - Google Patents

Description

The present invention relates to disaster prevention equipment for hydrogen stations equipped with dispensers that supply hydrogen to vehicles.

As a technology to reduce the burden on the environment, the government has indicated its policy to develop and popularize electric vehicles and fuel cell vehicles in place of gasoline-powered vehicles that use fossil fuels, and it is expected that eco-cars will become more widespread in society in the future. While the widespread use of charging facilities is essential as infrastructure for the popularization of electric vehicles, the installation of hydrogen stations is essential for fuel cell vehicles.

There are two types of hydrogen stations: those equipped with hydrogen production equipment (on-site hydrogen stations) and those that do not have hydrogen production equipment but instead receive hydrogen from hydrogen production facilities or on-site hydrogen stations and store it under pressure (off-site hydrogen stations).

In addition, in order to promote the spread of hydrogen stations, the use of spaces adjacent to public roads, especially the establishment of such stations alongside gas stations, is seen as a particularly concrete path forward.

On the other hand, considering the dangers of hydrogen, ensuring the safety of nearby schools, hospitals, homes, etc. in the unlikely event of an accident is an important requirement. For this reason, hydrogen stations that have facilities for producing, storing, and handling hydrogen are generally required to install disaster prevention equipment such as gas detectors, fire (flame) detectors, and water spray systems. Furthermore, they are required to install disaster prevention devices such as emergency shutoff valves in case of a leakage accident and temperature rise prevention devices, and safety distances from public roads and property boundaries are specified in the unlikely event of a fire.

When hydrogen tank refilling pressure was initially 40 MPa (automobile refilling pressure 35 MPa), the distance from the hydrogen equipment (e.g. dispenser) to the public road and the distance from the site boundary were 6 m, but in order to extend the distance that can be traveled on one full tank of hydrogen, the hydrogen tank refilling pressure has now been increased to 82 MPa (automobile refilling pressure 70 MPa). This means that larger amounts of hydrogen are now stored and handled, and taking into consideration the increased risk in the event of an accident, the distance from the public road and the distance from the site boundary have been increased to 8 m.

JP 2017-038789 A JP 2017-032126 A JP 2012-066086 A JP 2018-079704 A Japanese Patent Application Laid-Open No. 06-070991

However, to ensure a safe distance at a hydrogen station, a considerable amount of land is required, which is particularly difficult to secure in urban areas such as the Tokyo, Chubu and Kinki regions. Furthermore, for hydrogen stations that are attached to gasoline or other fueling stations (service stations: SS), ensuring a safe distance is a severe constraint on construction.

Furthermore, while current disaster prevention equipment is primarily designed to protect against fires and leaks within hydrogen stations, it is also necessary to protect hydrogen stations from fires at the gasoline or other refueling stations in combined hydrogen stations, fires in the neighborhood, and car accidents and vehicle fires on public roads, and from this perspective, the current disaster prevention equipment is not sufficient. However, building a hydrogen station costs several times more than building a gasoline or other refueling station, and installing excessive disaster prevention equipment on top of that would be a cost hindrance to its widespread use, so reducing costs is also a major factor in promoting its widespread use.

The objective of the present invention is to provide disaster prevention equipment for hydrogen stations that improves safety, shortens the required safety distance from roads and site boundaries, alleviates construction site and area restrictions, and provides reliable protection from nearby fires, etc., without significantly increasing costs.

(Hydrogen station disaster prevention equipment 1)
The present invention relates to a disaster prevention system for a hydrogen station,
A partition means for surrounding and partitioning a predetermined protected area including an installation area of a dispenser for supplying hydrogen when a predetermined abnormal event occurs;
A plurality of spraying means for spraying a predetermined substance to a predetermined area in order to deal with an abnormal event that has occurred, the spraying means including a first extinguishing means for spraying a fire extinguishing agent in a protected compartment separated by a partitioning means;
Equipped with
A plurality of operation patterns are provided for selectively operating the plurality of scattering means in response to the location where the abnormal event has occurred;
When an abnormal event occurs, the plurality of dispersing means including the first fire extinguishing means operate in an operation pattern corresponding to the location where the abnormal event has occurred.

(Cooling Means)
As one of the plurality of spraying means, cooling means is provided for spraying a coolant to the partition means that separates the compartment to be protected.

(Second fire extinguishing means)
As one of the plurality of dispersing means, a second extinguishing means is provided which disperses a fire extinguishing agent outside the protected compartment separated by the partition means.

(Hydrogen station disaster prevention equipment 2)
The present invention relates to a disaster prevention system for a hydrogen station,
A partition means for surrounding and partitioning a predetermined protected area including an installation area of a dispenser for supplying hydrogen when a predetermined abnormal event occurs;
A plurality of spraying means for spraying a predetermined substance to a predetermined area in order to deal with an abnormal event that has occurred, the spraying means including a first extinguishing means for spraying a fire extinguishing agent in a protected compartment separated by a partitioning means;
Equipped with
A plurality of operation patterns are provided for selectively operating the plurality of scattering means in response to the type of abnormal event;
When an abnormal event occurs, the plurality of dispersing means including the first fire extinguishing means operate in an operation pattern corresponding to the abnormal event that has occurred.

(Abnormal Event)
Abnormal events include hydrogen leaks and compartment fires within the protected compartment, and nearby fires and accidents outside the protected compartment.

(Effectiveness of disaster prevention equipment at hydrogen stations)
The present invention is a disaster prevention system for a hydrogen station, comprising a partitioning means for surrounding and separating a predetermined protected area including an area where a dispenser that supplies hydrogen is installed when a predetermined abnormal event occurs, and a plurality of spraying means for spraying a predetermined substance to a predetermined area to deal with an abnormal event that occurs, including a first extinguishing means for spraying a fire extinguishing agent within the protected area separated by the partitioning means, and having a plurality of operation patterns for selectively operating the plurality of spraying means in response to the location of the abnormal event or the abnormal event, and when an abnormal event occurs, the plurality of spraying means including the first extinguishing means operate in an operation pattern corresponding to the location of the abnormal event or the abnormal event that occurs, so that when an abnormal event occurs at the hydrogen station or its vicinity, the protected area including the dispenser installation area is surrounded to form a partitioning area to separate the protected area, and an abnormal event that occurs within the protected area is contained to suppress its impact on the surroundings, and the protected area is protected from an abnormal event that occurs outside the protected area.

In addition, by dispersing a fire extinguishing agent by the first extinguishing means within the protected area separated by the partitioning means, the spread of an abnormal event occurring within the protected area is suppressed, while the area is less susceptible to the effects of an abnormal event occurring outside the protected area. As a result, it is possible to shorten the required safety distance from roads and site boundaries, and to ease the constraints on hydrogen station construction.

In addition, the dispersal means including the first extinguishing means operates in an operating pattern that corresponds to the location of the abnormal event and the type of abnormal event, making it possible to deal with the abnormal event appropriately.

A plan view of the facilities of a hydrogen station FIG. 1 is an explanatory diagram showing a first embodiment of a disaster prevention system for a hydrogen station; FIG. 1 is an explanatory diagram showing an embodiment of a seat deployment device installed in disaster prevention equipment at a hydrogen station; An explanatory diagram showing the control system of the disaster prevention equipment of the hydrogen station in Figure 2. An explanatory diagram showing the operation of the disaster prevention equipment at a hydrogen station FIG. 13 is an explanatory diagram showing a second embodiment of the disaster prevention equipment for a hydrogen station. An explanatory diagram showing the control system of the disaster prevention equipment of the hydrogen station in FIG. An explanatory diagram showing a sheet spreading device with a water filling tube provided around the sheet in the sheet spread state. FIG. 9 is an explanatory diagram showing the operation of the disaster prevention equipment of the hydrogen station equipped with the seat deployment device of FIG. 8; FIG. 1 is an explanatory diagram showing a sheet spreading device having a discharge opening on the upper part of the sheet in a sheet spread state. FIG. 11 is an explanatory diagram showing the operation of a hydrogen station disaster prevention equipment that is provided with the sheet deployment device of FIG. 10 and that sprays fire extinguishing agent upward. FIG. 1 is an explanatory diagram showing a control pattern for an abnormal event of a disaster prevention facility of a hydrogen station equipped with a first fire extinguishing means, a second fire extinguishing means, and a cooling means.

[Basic Concept of the Embodiment]
Fig. 1 is an explanatory diagram showing an outline of the facilities of a hydrogen station in plan view. Note that a gasoline station or other refueling station that is attached to a hydrogen station is generally known as a service station (SS).

The basic concept of this embodiment is that when a specified abnormal event occurs at a hydrogen station 10B equipped with a dispenser 14 that supplies hydrogen to a vehicle (fuel cell vehicle), a partition section is formed by surrounding the protected area, including the installation area of the dispenser 14 (dispenser installation area 14a), with a partition sheet.
In other words, the area to be protected is enclosed within the partitioned area.

As a result, if the abnormal event is, for example, a fire (compartment fire) within the protected compartment, the heat and flame-blocking properties of the partition sheet will prevent the fire from spreading to the surrounding area, and the smoke-blocking properties of the partition sheet will prevent smoke from spreading to the surrounding area, preventing damage, etc.

For example, if the abnormal event is a nearby fire outside the protected area, the system similarly prevents the fire from spreading from the nearby fire into the protected space, protecting, for example, the dispenser 14. In addition, because the partition sheet is a cloth-like material, it is easy for people to evacuate from the protected area.

The hydrogen station 10B's disaster prevention equipment sprays a fire extinguishing agent into the protected area, which is enclosed by a partition sheet.

As a result, if the abnormal event is a hydrogen leak (before a fire occurs), the system promotes the discharge of hydrogen from within the protected area to the outside, preventing it from filling up the interior. In addition, by spraying the fire extinguishing agent from below to above the protected space, it is more effective at discharging hydrogen into the air from the upper opening of the protected space, quickly diluting it to a concentration below the lower explosion limit. It also effectively prevents hydrogen from leaking and filling up the surrounding area. It also cools the interior space, the dispenser, and the vehicle being filled with hydrogen, preventing the outbreak of a fire (ignition).

In addition, if the abnormal event is a compartment fire, the fire inside the protected compartment is extinguished, contained, or prevented from spreading, and the spread of the fire to the outside is prevented. At this time, the protected compartment is separated by a partition sheet, so the extinguishing agent is efficiently sprayed inside the protected compartment to prevent it from dissipating to the outside, increasing the extinguishing efficiency, and preventing water damage around the outside of the protected compartment.

If the abnormal event is a nearby fire or accident, the same action as above will prevent the fire from spreading from the outside into the protected area.

In addition, the disaster prevention equipment of the hydrogen station 10B sprays a coolant, such as cooling water, onto the partition sheets that separate the areas to be protected.

This cools the partition sheet and seals the gaps in the weave of the cloth-like partition sheet with cooling water. Therefore, if the abnormal event is a compartment fire, the fire prevention, fire resistance, and heat resistance of the partition sheet are strengthened to protect the partition sheet, preventing deterioration of the partition condition, and improving heat, flame, and smoke insulation to prevent the spread of fire to the outside and smoke leakage. Similarly, if the abnormal event is a nearby fire or accident, it prevents the spread of fire and smoke from entering the protected compartment from the outside. In addition, spraying cooling water on the partition sheet increases its weight, so the partition sheet's deployed state is stable regardless of the abnormal event.

The disaster prevention equipment of the hydrogen station 10B combines the formation of partitions, the spraying of fire extinguishing agents, and the spraying of coolants as described above. This provides the above synergistic effects in an optimal manner in the event of various abnormal events.

This simple and easy configuration can protect the area to be protected more effectively and efficiently than ever before, and also protect the surrounding area, thereby shortening the required safety distance.

The protected area of the hydrogen station 10B, which is enclosed and separated by a partition sheet, is a area (three-dimensional spatial area) that includes at least the area where the dispenser 14 that supplies hydrogen to vehicles is installed, and any area within the hydrogen station 10B can be the protected area as long as it includes the dispenser installation area 14a.

The partition area is an area that contains the area to be protected, but it may be the same area as the area to be protected. There may be multiple areas to be protected. The number of dispensers installed in one area to be protected is optional. This is explained in detail below.

[Hydrogen station overview]
As shown in Figure 1, the combined hydrogen station 10 is located within a site surrounded on three sides by a fire wall 11 except for the part facing the road, and is divided by a boundary L into a gasoline or other refueling station (service station: SS) 10A and a hydrogen station 10B. The gasoline or other refueling station 10A is equipped with fixed refueling equipment 12, etc., and the hydrogen station 10B is equipped with a dispenser 14, etc.

This embodiment uses as an example a hydrogen station (on-site hydrogen station) 10B equipped with a hydrogen production device, and a building separated by a fire wall 15 on the rear side of the site is used as the hydrogen production area 10C, in which a hydrogen production device 22, a compressor 24 and storage equipment 25 are installed. Raw fuel is stored in a raw fuel tank 20 installed underground from an inlet 20a. The raw fuel is taken from the raw fuel tank 20 to the hydrogen production device 22 to generate hydrogen, which is compressed to a predetermined pressure by the compressor 24 and stored in the storage equipment 25. The hydrogen is sent from the storage equipment 25 to a dispenser 14, and hydrogen can be supplied to and filled into a fuel cell vehicle (FCV) by, for example, filling at a differential pressure of 70 MPa.

On the other hand, the gasoline filling station 10A has a filling station 12a of the fixed fueling equipment 12 that allows gasoline to be filled into gasoline-powered vehicles, and a filling station 13a of the fixed fuel filling equipment 13 that allows kerosene to be filled into plastic tanks, etc., and further has an office 26, an automobile inspection and maintenance facility 28, and a car wash 30.

A roof 16 is installed on the fixed fueling equipment 12 installed at the gasoline or other fueling station 10A to prevent rainwater from getting on it. A roof 18 is also installed on the dispenser 14 installed at the hydrogen station 10B to prevent rainwater from getting on it. The roof 18 of the dispenser 14 is designed to diffuse leaking and rising hydrogen into the atmosphere, so that rainwater cannot pass through from above, but air from below can escape upwards.

[Outline of conventional disaster prevention equipment]
In this embodiment, the hydrogen station 10B is provided with disaster prevention equipment including a fire alarm system.

The fire alarm system connects a fire detector 34 installed in the office 26 to a detector line drawn from a fire receiving panel 32 installed in the office 26, and the fire alarm signal from the fire detector 34 is received by the fire receiving panel 32, which outputs a fire alarm and also outputs a signal to other equipment.

The disaster prevention equipment includes multiple water spray heads 48 installed in the hydrogen production area 10C to protect the storage equipment 25, and a water supply pipe is connected to the water spray heads 48 from the water spray pump equipment 44 installed in the gasoline filling station 10A to supply water for extinguishing fires as a fire extinguishing agent. An emergency power supply equipment 46 is also installed for the water spray pump equipment 44 as a countermeasure against power outages.

The spraying of fire-fighting water from the water spray head 48 by starting the water spray pump equipment 44 is controlled by a control panel 35 installed in the office 26. The fire detector 36, hydrogen detector 38, temperature detector 40, and start-up device 42 installed in the hydrogen station 10B and hydrogen production area 10C are connected to the control panel 35 via signal lines. The fire detector 36 and start-up device 42 are installed, for example, on the ceiling or a pillar near the dispenser 14, and the hydrogen detector 38 is installed inside the housing of the dispenser 14.

When the control panel 35 determines that a fire has been detected by the fire detector 36, hydrogen has been detected by the hydrogen detector 38, a predetermined temperature has been detected by the temperature detector 40, the starter 42 has been operated, or a fire notification signal has been received from the fire receiving panel 32, it outputs a pump start signal to the water spray pump equipment 44 to start the pump, and sprays pressurized fire extinguishing water from the water spray head 48 onto the storage equipment 25 to cool it and protect the storage equipment 25 from heat caused by the fire. Although not shown, fire extinguishers are provided at designated locations in the attached hydrogen station 10.

[First embodiment of disaster prevention equipment for hydrogen station]
(Overview of facility configuration)
FIG. 2 is an explanatory diagram showing a first embodiment of a disaster prevention system for a hydrogen station according to the present invention, showing the hydrogen station 10B of FIG. 1 taken out, with FIG. 2(A) showing an oblique view and FIG. 2(B) showing a front view.

The hydrogen station 10B is equipped with a dispenser 14, and hydrogen is sent from the storage facility 25 shown in FIG. 1 to the dispenser 14, and the hydrogen is supplied to a fuel cell vehicle (FCV) via a hose with a nozzle (not shown) to fill the vehicle.

In this embodiment, the dispenser 14 is conceptualized as a facility portion that contains various components for supplying and filling hydrogen to a fuel cell vehicle (FCV) within a housing, and is equipped with a hose with a nozzle and an operation display unit. The hydrogen detector 38 is disposed within the housing of the dispenser 14.

A roof 18 with a known ventilation structure is installed on top of the dispenser 14 by supports 54, and in this embodiment, a sheet deployment device 50 is installed on each of the four sides of the roof 18, and further, a coolant spray head 62 is provided to spray cooling water.

The sheet deployment device 50 is activated by a control signal from the control panel 35 shown in FIG. 1 in the event of a specified abnormal event such as a hydrogen leak, compartment fire, nearby fire, or nearby accident, and drops the partition sheet that is normally rolled up and held in place, deploying it vertically and vertically to form a partitioned area by surrounding all four sides of the area to be protected, including the dispenser installation area 14a, under the roof 18.

A fire extinguishing head 52 is located approximately in the center of the ceiling surface (underside of the roof 18) of the dispenser 14, and is capable of spraying fire extinguishing water supplied from the water spray pump equipment 44 in Figure 1. In addition, a fire detector 36 is installed on the ceiling side, an activation device 42 is attached to the support 54, and a hydrogen detector 38 is installed inside the dispenser 14.

(Sheet deployment device)
FIG. 3 is an explanatory diagram showing an embodiment of a sheet deployment device installed in disaster prevention equipment at a hydrogen station, in which FIG. 3(A) shows the normal state, FIG. 3(B) shows the deployed state of the partition sheet, and FIG. 3(C) shows a plan view from below.

As shown in FIG. 3(A), the sheet deployment device 50 has a device body 55 fixed to the upper periphery of the area to be protected, specifically the eaves side which is the periphery of the roof covering the top of the dispenser 14, and one end of the partition sheet 56 is fixed to the device body 55 by a sheet fixing part 57. At this time, the partition sheet 56 is wound up in a roll and is held in a hanging state at two points on the left and right by holding members 58 made of wires or ropes on the underside of the device body 55.

The partition sheet 56 is a cloth-like material that has fireproofing, fire resistance, or heat resistance, and further has flame insulation properties to block flames, heat insulation properties to block heat, or smoke insulation properties to block smoke, and can withstand high temperatures of, for example, 1200°C, and is also called a fireproof sheet, fireproof curtain, fireproof screen, etc. Note that the partition sheet 56 may be any material that has heat resistance of several hundred degrees or more, even if it is below 1200°C.

One end of the retaining member 58, which uses a wire or rope, is fixed to the device body 55, and the other end is detachably held by a latch release unit 60 provided on the device body 55 through the underside of the rolled partition sheet 56, and is normally prevented from falling off. The latch release unit 60 releases the latch, for example, by energizing a solenoid in response to a control signal from the control panel 35 shown in FIG. 1.

When the latch release section 60 of the sheet unfolding device 50 is operated by a control signal from the control panel 35, the retention of one end of the retaining member 58 is released, and the partition sheet 56 falls under its own weight with one end edge of the partition sheet 56 fixed to the device body 55, as shown in FIG. 3(B), and is unfolded downward.

In this way, the four partition sheet deployment devices 50 shown in FIG. 6(A) can be operated to deploy the four partition sheets 56 to form a partition area, and the area to be protected can be surrounded by the partition area.

The length of the partition sheet 56 deployed as shown in Figure 3 (B) is measured to be longer than the installation height of the sheet deployment device 50, so that even if an object is placed on the road surface below the area to be protected, gaps are unlikely to be created due to the sheet sagging when it is deployed.

The seat unfolding device 50 may be configured so that the partition sheet 56 is wound around a rotating shaft, and the latch on the rotating shaft is released to allow the partition sheet 56 to fall and unfold under its own weight. Alternatively, the seat unfolding device 50 may be configured so that the partition sheet 56 is held in a bellows-like folded state, and released to allow the partition sheet to fall and unfold.

The release of the partition sheet 56 in the sheet deployment device 50 can be achieved not only by a control signal from the control panel 35, but also by a heat-sensitive type using a fusible link that releases the hold by blowing a fuse exposed to heat from a fire. A composite type that combines each method depending on the application, scale, and shape can also be used.

(coolant dispersion head)
As shown in Fig. 3, the sheet deployment device 50 is provided with a coolant spray head 62 on piping extending from both sides of the device body 55 (both sides of the deployed partition sheet 56). A water supply pipe 63 is connected to the coolant spray head 62 through the device body 55 via an on-off valve 64, and the coolant spray head 62 receives a supply of fire-extinguishing water from the water spray pump equipment 44 shown in Fig. 1, and sprays the fire-extinguishing water as a coolant approximately uniformly on the outer sheet surface of the protected area surrounded by the deployed partition sheet 56 as shown in Fig. 3(B).

In addition, the partition sheet 56 is available in two types: one with a resin coating on the surface of the fabric weave, and one without. When an uncoated partition sheet 56 is used, the cooling water sprayed from the coolant spray head 62 wets the sheet surface of the unfolded partition sheet 56, and the sprayed cooling water soaks into the partition sheet 56, which has a fabric weave structure, and flows down along the sheet surface. This impregnation of the cooling water and flowing down along the sheet surface closes the gaps in the fabric weave of the partition sheet 56, improving airtightness and suppressing the diffusion of hydrogen to the outside of the partition sheet 56 in the event of hydrogen leakage from the dispenser 14, for example. In addition, the impregnation of the cooling water and flowing down along the outer sheet surface cools the partition sheet 56, improving its fireproofing, fire resistance, heat resistance, flame insulation and heat insulation properties, and also improving smoke insulation in the event of a fire.

The cooling water may be sprayed on the inside of the sheet surface (the sheet surface facing the inside of the protected area) or on the outside (the sheet surface facing the inside of the protected area) of the unfolded partition sheet 56, or on both the inside and outside of the sheet surface.

(Control system)
Fig. 4 is an explanatory diagram showing the control system of the disaster prevention equipment of the hydrogen station in Fig. 2. As shown in Fig. 4, a signal line 100a extending from a control panel 35 functioning as a control means is connected to terminals including a fire detector 36, a hydrogen detector 38, and a starter 42 installed in the area to be protected, and monitors for abnormal events in the area to be protected, including hydrogen leakage from the dispenser 14.

The signal line 100b from the control panel 35 is connected to the latch release section 60 of the sheet deployment device 50 installed around (on) the periphery (edge) of the roof 18 that covers the dispenser 14, and a control signal from the control panel 35 releases the latch of the holding member 58, allowing the partition sheet 56 to be deployed.

An on-off valve 68 is also connected to the signal line 100c from the control panel 35, and the on-off valve 68 is opened by an open control signal from the control panel 35, allowing the fire extinguishing water supplied from the water spray pump equipment 44 via the water supply pipe 63 to be sprayed from the fire extinguishing head (first fire extinguishing head) 52 installed on the ceiling side of the dispenser 14. The fire extinguishing head 52 and the on-off valve 68 constitute the first fire extinguishing means.

In addition, an on-off valve 64 is connected to a signal line 100d from the control panel 35 in response to the individual cooling of the inner and outer surfaces of the partition sheet 56, and the on-off valve 64 is opened by an open control signal from the control panel 35, making it possible to spray fire extinguishing water supplied from the water spray pump equipment 44 via a water supply pipe 63 from the coolant spray heads 62 installed separately on the inner and outer sides of the sheet deployment device 50. The cooling water spray heads 62 and the on-off valves 64 constitute the cooling means.

In addition, the fire extinguishing means (first fire extinguishing means) and cooling means are concepts that broadly include the water spray pump equipment 44 and associated piping equipment. This also applies to the second fire extinguishing means described below.

[Control operation of hydrogen station disaster prevention device]
FIG. 5 is an explanatory diagram showing the operation of the disaster prevention equipment of a hydrogen station, with FIG. 5(A) showing an oblique view and FIG. 5(B) showing a front view. Furthermore, in order to make it easier to understand the inside of the unfolded partition sheet, the partition sheet is shown in a see-through state.

Control of the hydrogen station's disaster prevention equipment by the control panel 35 is performed, for example, in the following hydrogen leak mode, fire outbreak mode, and surrounding area mode. Here, the hydrogen leak mode is a control mode in case of a hydrogen leak from the dispenser 14, the fire outbreak mode is a control mode in case of a fire (compartment fire) inside the protected area including the dispenser 14, and the surrounding area mode is a control mode in case of a nearby fire or accident outside the protected area. Note that a fuel leak (before a fire) at the gasoline or other refueling station 10A may be included in a nearby fire or nearby accident.

(Hydrogen leak mode)
When the control panel 35 receives a hydrogen detection signal due to a hydrogen leak from the hydrogen detector 38 provided inside the housing of the dispenser 14, it sends a control signal to the latch release section 60 of the sheet deployment device 50 provided on each of the four sides of the roof 18 of the dispenser 14 to control the hydrogen leak mode, releasing the latch of the holding member 58 and causing the partition sheet 56 to fall and deploy, thereby forming a partition section surrounding the protected area under the roof 18, including the dispenser installation area 14a.

Then, the control panel 35 outputs a start signal to the water spray pump equipment 44 to start pump operation, and sends an open control signal to the on-off valve 68 to open it, supplying extinguishing water from the water spray pump equipment 44 to the fire extinguishing head 52, spraying the extinguishing water to the protected area including the dispenser installation area 14a where the dispenser 14 causing the hydrogen leak is installed to cool it, disperse the hydrogen gas, and prevent an explosion due to hydrogen ignition. In addition, by spraying the extinguishing water to the protected area, the leaked hydrogen is diluted upward and discharged to the outside through the roof 18 with a ventilation structure and diffused, preventing a hydrogen explosion.

If a hydrogen leak occurs while hydrogen is being filled into a vehicle, the user operates the start-up device 42, and the control panel 35 receives a start-up signal from the start-up device 42 and issues an abnormality alarm. The attendant who learns of the hydrogen leak through the abnormality alarm then performs a specified start-up confirmation operation on the control panel 35, for example operating the start-up confirmation switch 35a provided on the control panel 35, and the same disaster prevention equipment control operation is performed as when a hydrogen detection signal is received.

In addition, in the event of a hydrogen leak, cooling of the deployed partition sheet 56 is not essential, so cooling water is not sprayed from the coolant spray head 62. However, if an uncoated partition sheet 56 is used, cooling water may be sprayed to impregnate the partition sheet 56 and increase airtightness in order to prevent the diffusion of leaked hydrogen to the surrounding area, particularly to prevent ignition due to leakage toward the gasoline or other fuel station 10A side.

If the coolant spray head 62 is arranged to spray coolant onto the inner sheet surface of the partition sheet 56, the spraying may be performed in order to encourage the escape of leaked hydrogen outside the protected area in the event of a hydrogen leak, and to dilute the hydrogen concentration within the protected area.

(Fire outbreak mode)
When the control panel 35 receives a fire detection signal from the fire detector 36 regarding a hydrogen fire leaking from the dispenser 14, it sends a control signal to the latch release section 60 of the sheet deployment device 50 provided on each of the four sides of the roof 18, which releases the latch on the holding member 58, causing the partition sheet 56 to drop and deploy, thereby forming a partition section surrounding the area to be protected below the roof 18.

Then, the control panel 35 outputs a start signal to the water spray pump equipment 44 to start pump operation as fire outbreak mode control, and also sends an open control signal to the on-off valve 68 to open it, supplying fire extinguishing water from the water spray pump equipment 44 to the fire extinguishing head 52, and spraying the fire extinguishing water on the protected compartment where the burning dispenser 14 is installed to extinguish the fire.

The control panel 35 also sends an open control signal to the on-off valve 64 to open it, supplying fire extinguishing water from the water spray pump equipment 44 to the coolant spray heads 62 installed on both sides of the partition sheet 56, spraying cooling water on both the inside and outside of the sheet surface of the deployed partition sheet 56, improving the fire prevention, fire resistance, heat resistance, flame insulation, heat insulation, flame insulation, and smoke insulation of the partition sheet 56.

(Ambient Mode)
In the event of a vehicle accident or gas leak accident (neighborhood accident) on the public road or in the vicinity of the attached hydrogen station 10, or a neighborhood fire such as a fire at the gasoline or other fueling station 10A, a house fire, or a vehicle fire (neighborhood fire), if a station attendant determines that the danger to the hydrogen station 10B due to the neighborhood fire has increased, a predetermined start-up operation is performed on the control panel 35, for example, by operating the start-up switch 35b provided on the control panel 35, to control the disaster prevention equipment.

The peripheral mode control operation in the event of a nearby fire or the like is to send a control signal to the latch release section 60 of the sheet deployment device 50 installed on each of the four sides of the roof 18 based on the activation operation of the control panel 35, which releases the latch of the holding member 58 and drops and deploys the partition sheet 56, forming a partition section surrounding the area to be protected below the roof 18.

Then, the control panel 35 outputs a start signal to the water spray pump equipment 44 to start pump operation, and sends an open control signal to the on-off valve 64 to open it, supplying fire extinguishing water from the water spray pump equipment 44 to the coolant spray heads 62 provided on both sides of the partition sheet 56, spraying cooling water on both the inside and outside of the sheet surface of the deployed partition sheet 56, improving the fire prevention, fire resistance, heat resistance, flame insulation, heat insulation and smoke insulation of the partition sheet 56 against nearby fires, and reliably protecting the protected area from nearby fires. Here, by improving the smoke insulation, it is possible to more effectively prevent contamination and damage to the human body due to smoke. It is also possible to effectively prevent response activities from being hindered due to reduced visibility due to smoke.

Furthermore, if a nearby fire spreads and the risk of fire increases, a specified manual operation of the control panel 35, for example a manual fire extinguishing switch (not shown) provided on the control panel 35, sends an open control signal to the on-off valve 68 to open it, and water for extinguishing fire from the water spray pump equipment 44 is supplied to the fire extinguishing head 52, which sprays the water on the protected area to cool it, improving the fire prevention, fire resistance, flame insulation and heat insulation properties of the partition sheet 56 and providing reliable protection from nearby fires.

In addition, if multiple abnormal events occur simultaneously, such as a hydrogen leak, a compartment fire, or an abnormal event in the surrounding area (a nearby fire or accident), the disaster prevention equipment will be controlled using a combination of control modes that correspond to the abnormal events that have occurred.

[Second embodiment of disaster prevention equipment for hydrogen station]
Fig. 6 is an explanatory diagram showing a second embodiment of the disaster prevention equipment of the hydrogen station, Fig. 6(A) shows a perspective view in normal operation, and Fig. 6(B) shows a front view in operation with a see-through sheet. Fig. 7 is an explanatory diagram showing the control system of the disaster prevention equipment of the hydrogen station of Fig. 6.

As shown in FIG. 6(A), in addition to the features of the first embodiment described above, this embodiment is characterized in that the sheet deployment device 50 provided on the four sides of the roof 18 covering the dispenser 14 is provided with an outer fire extinguishing head 70 that functions as a second fire extinguishing head.

As shown in FIG. 7, the outer fire extinguishing head 70 is connected to the water supply pipe 63 via an on-off valve 72, and the on-off valve 72 is connected to a signal line 100e from the control panel 35. The on-off valve 72 and the outer fire extinguishing head 70 constitute the second extinguishing means.

The control operation of the hydrogen station's disaster prevention equipment by the control panel 35 will be in the hydrogen leak mode, fire outbreak mode, and surrounding mode by the control panel 35 shown in Figure 4, with the addition of the option of spraying fire water by the outer fire extinguishing head 70.

The control operation of the hydrogen leakage mode by the control panel 35 is the same as in the first embodiment, and it is not essential that the outer fire extinguishing head 70 sprays extinguishing water around the outside of the protected area. However, if it is desired to further suppress the diffusion of hydrogen to the surrounding area, extinguishing water may be sprayed from the outer fire extinguishing head 70 as necessary.

The control operation of the fire outbreak mode by the control panel 35 not only sprays extinguishing water from the inner fire extinguishing head 52, as in the first embodiment, but also sprays extinguishing water from the outer fire extinguishing head 70 to the outside of the partition sheet 56, as shown in FIG. 6(B), further improving the effect of preventing the fire from spreading.

In addition, the peripheral mode control operation by the control panel 35, like the first embodiment, sprays cooling water on the outside and/or inside of the partition sheet 56 using the coolant spray head 62, and sprays fire extinguishing water on the outside of the partition sheet 56 from the outer fire extinguishing head 70 as shown in FIG. 6(B), further enhancing the effect of preventing the spread of fire by blocking fire and heat to the protected area in the event of a nearby fire occurring on a nearby public road or site. Note that fire extinguishing water may be sprayed from the inner fire extinguishing head 52 if necessary.

In this embodiment, the control content is the same for nearby fires and nearby accidents, but they may be different if necessary.

[Seat reinforcement structure]
Figure 8 is an explanatory diagram showing a sheet deployment device having a water filling tube attached to the periphery of the sheet in the sheet deployed state, and Figure 9 is an explanatory diagram showing the operation of disaster prevention equipment at a hydrogen station equipped with the sheet deployment device of Figure 8, with Figure 9(A) showing an oblique view during operation and Figure 9(B) showing a front view during operation, and further showing a see-through state of the partition sheet.

As shown in FIG. 8, the partition sheet 56 has tubes 74 along both sides and the bottom edge of the sheet. When the partition sheet 56 is unfolded, the on-off valve 64 is opened to fill the tubes 74 with fire-fighting water supplied from the water supply pipe 63.

The timing for opening the on-off valve 64 to start filling the tube 74 with water is preferably set to the point when the partition sheet 56 has almost finished dropping and unfolding. This prevents smooth unfolding from being impeded by starting filling with water before unfolding is complete, which would cause the tubes on both sides of the partition sheet to expand sequentially from the upstream side of the water filling flow path. Also, the water filling pressure can be kept relatively low.

As shown in FIG. 9, when the tubes 74 of the partition sheet 56 that is deployed around the area to be protected by the operation of the sheet deployment device 50 are filled with fire extinguishing water, the weight and water pressure of the fire extinguishing water filled in the tubes 74 form a frame that reinforces the partition sheet 56, maintaining the deployed state of the partition sheet 56 and preventing the partition sheet 56 from being rolled up or moved by the wind, ensuring that the partition state can be maintained. Note that the tubes 74 do not necessarily have to be provided on three sides of the partition sheet 56. For example, they may be provided on only the two vertical sides of the partition sheet 56. Furthermore, if an appropriate water filling route can be set, they may be provided only on the lower edge.

[Upward spraying of fire-fighting water]
Figure 10 is an explanatory diagram showing a sheet deployment device with a release opening on the top of the sheet in the sheet deployed state, and Figure 11 is an explanatory diagram showing a disaster prevention equipment for a hydrogen station in an operating state, which is equipped with the sheet deployment device of Figure 10 and the embodiment of Figure 5 equipped with upward spraying means for spraying a fire extinguishing agent upward as an agent to promote the discharge of leaked hydrogen in the event of a hydrogen leak, Figure 11(A) shows an oblique view when in operation, and Figure 11(B) shows a front view when in operation, and further shows the partition sheet in a see-through state.

As shown in FIG. 10, the partition sheet 56 provided in the sheet deployment device 50 of this embodiment has a release opening 76 formed in the upper part of the sheet to release hydrogen that leaks into the protected area when the partition sheet 56 is deployed.

In this embodiment, as shown in FIG. 11, the spray heads 80 are arranged facing upward on a water supply pipe laid in a trough 78 provided along the road surface (floor surface) around the edge of the protected area, and are arranged at a predetermined position on the bottom side of the protected area separated by the unfolding of the partition sheet 56. In this embodiment, the spray heads 80 are arranged facing upward on a water supply pipe laid in a trough 78 provided along the road surface (floor surface) around the protected area as an upward spraying means for spraying extinguishing agent upward within the protected area. In this example, the spray heads 80 spray water for extinguishing upward within the protected area. A lattice cover is arranged at the opening of the trough 78, and a water discharge opening 78a is formed in the lattice cover arranged above the spray heads 80. The installation form of the spray heads 80 is not limited to the above, and for example, they may be buried facing upward in the floor surface of the protected area.

Therefore, if hydrogen leaks from, for example, a dispenser 14 in the protected area, fire extinguishing water is sprayed upward into the protected area from a spray head 80 installed in a trough 78 provided on the lower periphery of the protected area, and the leaked hydrogen is carried by the air current generated by the spraying of the fire extinguishing water, and the leaked hydrogen is added to the ventilation structure of the roof 18 and efficiently released upward from the release opening 76 formed at the top of the deployed partition sheet 56, where the hydrogen is discharged and diffused into the sky, diluting it and preventing a hydrogen explosion. At this time, a coolant may also be sprayed onto the partition sheet.

The partition sheet 56 with the release opening 76 may also be used in the other embodiments described above.

In addition to or instead of forming a discharge opening 76 in the partition sheet 56, a sheet deployment device 50 may be provided slightly below the roof 18, so that a discharge opening is formed between the roof 18 and the sheet deployment device 50.

(Dilution of leaked hydrogen using exhaust promotion gas)
Here, in addition to or instead of extinguishing water, air, nitrogen, other inert gases, or mixtures of these (hereinafter referred to as "exhaust promoting gases") may be used as the leaked hydrogen exhaust promoter. In this case, unnecessary water damage can be prevented. Examples of inert gases include nitrogen, IG-55 (mixed gas of 50% nitrogen and 50% argon), and IG-54 (mixed gas of 52% nitrogen, 40% argon, and 8% carbon dioxide). IG-55 and IG-541 are also used as fire extinguishing agents (fire extinguishing gases).

In addition, for example, in the case of a hydrogen leak, if the leaked hydrogen concentration meets a predetermined first concentration condition, discharge promotion gas may be released upward from the spray head 80 to dilute the leaked hydrogen, and if a predetermined second concentration condition is met, the spraying of extinguishing water from the fire extinguishing head 52 may be switched to or the spraying of extinguishing water from the fire extinguishing head 52 may be added.

The predetermined first concentration condition is, for example, a concentration range in which hydrogen is leaking but the risk of ignition, fire, or explosion is judged to be significantly low, and the predetermined second concentration condition is, for example, a concentration range in which the risk of ignition, fire, or explosion is judged to be higher than the first concentration condition. The concentration increase rate and duration may also be added to these conditions for judgment.

As a control of the upward spraying means of the control panel 35 according to such a leaked hydrogen concentration, for example, when the hydrogen concentration detected by the hydrogen detector 38 reaches 25% LEL (Lower Explosion Limit), the control panel 35 notifies (warns) that the first concentration condition is met, and deploys the partition sheet 56 to partition the protected area and sprays the discharge promotion gas upward from the spray head 80 to discharge and dilute the leaked hydrogen. Then, when the hydrogen concentration further increases and the detected hydrogen concentration reaches 50% LEL, it is determined that the second concentration condition is met, and the upward spray from the spray head 80 is switched to the spraying of fire extinguishing water from the fire extinguishing head 52, or both the spraying of the discharge promotion gas and the spraying of fire extinguishing water are performed, so that the hydrogen gas is discharged and diluted and the space in the protected area and the protected object (e.g., a dispenser) in the protected area are simultaneously cooled and protected. Furthermore, if the hydrogen concentration rises further and reaches, for example, 60-75% LEL, the system related to the hydrogen station's hydrogen supply will be shut down.

In this way, if the hydrogen concentration is low, the extinguishing agent is not sprayed, preventing water damage, and if the concentration does not decrease as a result of diluting it with the spraying of the exhaust promotion gas, the extinguishing agent can be sprayed to provide more reliable protection.

The upward spraying means of this embodiment may be combined with other embodiments, for example, with the embodiments of Figures 6 and 9, and in each case the cooling means configuration of Figure 3 may be adopted.

[Disaster prevention equipment control]
FIG. 12 is an explanatory diagram showing control patterns for abnormal events in disaster prevention equipment of a hydrogen station equipped with the first fire extinguishing means, second fire extinguishing means, and cooling means shown in FIG. 7. Abnormal events that occur are divided into hydrogen leaks, compartment fires, nearby fires, and nearby accidents, and the control of the first fire extinguishing means, second fire extinguishing means, and cooling means in response to the occurrence of each abnormal event is shown as control patterns 1 to 5 in FIGS. 12(A) to 12(E), with the case of control being marked "ON."

As shown in FIG. 7, the first extinguishing means is composed of the extinguishing head 52 and the on-off valve 68, the second extinguishing means is composed of the outer extinguishing head 70 and the on-off valve 72, and the cooling means is composed of the coolant spray head 62 and the on-off valve 64. The sheet deployment device 50 operates in the event of any abnormal event. Also, fuel leakage (before the fire) at the gasoline or other refueling station 10A is included in the nearby fires or nearby accidents.

(Control Pattern 1)
Control pattern 1 in FIG. 12(A) is the minimum necessary control pattern targeting the first fire extinguishing means and the cooling means, in which only the first fire extinguishing means is operated in the event of a hydrogen leak or a compartment fire, and on the other hand, in the event of a nearby fire or accident, only the cooling means is operated.

(Control Pattern 2)
Control pattern 2 in FIG. 12(B) is a control pattern that targets the first fire extinguishing means, the second fire extinguishing means, and the cooling means, and in the event of a hydrogen leak or a compartment fire, the first fire extinguishing means and the coolant spraying means are operated, while in the event of a nearby fire or nearby accident, the second fire extinguishing means and the cooling means are operated.

(Control Pattern 3)
Control pattern 3 in FIG. 12(C) is another control pattern targeting the first fire extinguishing means, the second fire extinguishing means, and the cooling means, in which in the event of a hydrogen leak or a compartment fire, the first fire extinguishing means and the second fire extinguishing means are operated, while in the event of a nearby fire or nearby accident, the first fire extinguishing means and the cooling means are operated.

(Control pattern 4)
Control pattern 4 in Fig. 12(D) is a control pattern in which the first and second fire extinguishing means are operated when a nearby fire or accident occurs. Note that the case where a hydrogen leak or a compartment fire occurs is omitted, but any of control patterns 1 to 3 is used.

(Control Pattern 5)
Control pattern 5 in Fig. 12(E) is a control pattern in which the first fire extinguishing means, the second fire extinguishing means and the cooling means are all operated in response to the occurrence of all abnormal events. In addition, the order in which the first fire extinguishing means, the second fire extinguishing means and the cooling means are operated is changed to, for example, (first fire extinguishing means) → (cooling means) → (second fire extinguishing means) in the case of a hydrogen leak or a compartment fire.
On the other hand, for a fire or accident in the vicinity, for example,
(Cooling means) → (Second fire extinguishing means) → (First fire extinguishing means)
In either case, first, the partition sheet of the partition means is deployed to form a partition section surrounding the section to be protected.

The order of operations of the above means is merely an example, and other orders may be used, or any two or three operations may be performed simultaneously.

The control patterns for an abnormal event in the disaster prevention equipment of a hydrogen station equipped with the first fire extinguishing means and cooling means shown in Figure 4 are the control patterns 1 to 5 shown in Figures 12 (A) to (E) excluding the second fire extinguishing means.

[Modifications of the present invention]
(Formation of multiple partitions)
The partition sheet may be deployed to form a partition section that divides the area to be protected, including the area where the dispenser is installed, so as to surround the area to be protected in two layers. In this case, the intermediate area between the inner partition section and the outer partition section may be treated as the area to be protected, or may be treated as outside the area to be protected.

In addition, when forming a partition area that encloses three or more layers, the intermediate area between the two or more layers other than the innermost layer may be treated as a protected area or outside the protected area in part or in whole, depending on the system, operating mode, and other circumstances.

(Fire extinguishing agents of the first and second fire extinguishing means)
In the above-described embodiments of the fire extinguishing means (first fire extinguishing means) and the second fire extinguishing means, examples have been shown in which extinguishing water is sprayed as an extinguishing agent. However, as in the embodiment of the upward spraying means, the spraying of extinguishing water may be combined with the spraying of a fire extinguishing gas (e.g., IG-55, IG-541) as a leaking hydrogen exhaust promoter.

For example, in the event of a hydrogen leak, if the leaking hydrogen concentration meets a predetermined third concentration condition, one of the above gases may be released from the fire extinguishing head 52 or the outer fire extinguishing head 70 to dilute the leaking hydrogen, and if a predetermined fourth concentration condition is met, the method may switch to spraying extinguishing water or add spraying of extinguishing water.

The predetermined third concentration condition is, for example, a concentration range in which hydrogen is leaking but the risk of ignition, fire, or explosion is judged to be significantly low, and the predetermined fourth concentration condition is, for example, a concentration range in which the risk of ignition, fire, or explosion is judged to be higher than the third concentration condition. The concentration increase rate and duration may also be added to these conditions for judgment.

As a control of the extinguishing means by the control panel 35 according to such a leaked hydrogen concentration, for example, in the case of the extinguishing means (first extinguishing means), when the hydrogen concentration detected by the hydrogen detector 38 reaches 25% LEL, the control panel 35 notifies (warns) that the third concentration condition is met, and deploys the partition sheet 56 to separate the protected area and sprays extinguishing gas from the extinguishing head 52 to exhaust and dilute the leaked hydrogen. Then, when the hydrogen concentration further increases and the detected hydrogen concentration reaches 50% LEL, it is determined that the fourth concentration condition is met, and the spraying from the extinguishing head 52 is switched to spraying extinguishing water, or both the spraying of extinguishing gas and the spraying of extinguishing water may be performed, thereby simultaneously exhausting and diluting the hydrogen gas and cooling and protecting the space within the protected area and the protected object within the area (e.g., a dispenser).

In this way, when the hydrogen concentration is low, water for extinguishing is not sprayed, preventing water damage, and when the concentration does not decrease as a result of diluting it with the spray of the exhaust-promoting gas, more reliable protection can be achieved by spraying a fire extinguishing agent. The same can be done for the second extinguishing means.

(Concentration conditions)
The first and third concentration conditions shown in the above embodiment may be the same or different, and the same applies to the second and fourth concentration conditions.

The hydrogen concentration values for each concentration condition shown in the above embodiment are merely examples, and the present invention is not limited to these values.

(Hydrogen detection signal)
The hydrogen detection signal from the hydrogen detector 38 may be a signal indicating that a predetermined concentration has been reached, or may be a signal indicating the detected hydrogen concentration. In the latter case, the control panel 35 determines whether or not the predetermined concentration has been reached.

(Hydrogen station)
The above embodiment takes as an example a hydrogen station that is provided together with a gasoline or other refueling station, but is not limited to this and can be similarly applied to a stand-alone hydrogen station.

In addition, the above embodiment has been described as an example of an on-site hydrogen station equipped with hydrogen production equipment, but the present invention is not limited to this and can be similarly applied to an off-site hydrogen station that does not have hydrogen production equipment.

(Sheet deployment device)
The above embodiment takes as an example a case in which multiple sheet deployment devices are arranged around the periphery of the roof covering the top of the dispenser, but as long as the partition sheet can be deployed to surround the periphery of the area to be protected, including the dispenser installation area, the sheet deployment devices can be arranged as needed.

In addition, if the width of the area to be protected is long, multiple sheet deployment devices are arranged side by side. In this case, multiple sheet deployment devices are arranged side by side so that adjacent partition sheets overlap at the ends to close the gap.

(Other combinations of embodiments)
The present invention includes appropriate combinations other than the combinations of the above-described embodiments that do not impair the objects and advantages of the present invention.

(others)
The present invention also includes appropriate modifications that do not impair the objects and advantages of the present invention. For example, the extinguishing water can be replaced with extinguishing foam or powder extinguishing agent.

Furthermore, the present invention is not limited by the numerical values shown in the above embodiments.

10: Combined hydrogen station 10A: Gasoline or other fueling station 10B: Hydrogen station 10C: Hydrogen production area 11, 15: Fire wall 12: Fixed fueling equipment 12a: Gasoline station 13: Fixed fueling equipment 13a: Fuel station 14: Dispenser 14a: Dispenser installation area 16, 18: Roof 20: Raw fuel tank 22: Hydrogen production device 24: Compressor 25: Storage equipment 26: Office 32: Fire receiving panel 34: Fire detector 35: Control panel 36: Fire detector 38: Hydrogen detector 40: Temperature detector 42: Starting device 44: Water spray pump equipment 46: Emergency power supply equipment 48: Water spray head 50: Sheet deployment device 52: Fire extinguishing head 55: Device body 56: Partition sheet 57: Sheet fixing part 58: Holding member 60: Latch release part 62: Coolant spray head 63: Water supply pipe 64, 68, 72: Opening and closing valve 70: Outer fire extinguishing head 74: Tube 76: Discharge opening 78: Trough 80: Spray head

Claims (5)

A disaster prevention facility for a hydrogen station,
A partition means for surrounding and partitioning a predetermined protected area including an installation area of a dispenser for supplying hydrogen when a predetermined abnormal event occurs;
a plurality of spraying means for spraying a predetermined substance to a predetermined area in order to deal with the abnormal event that has occurred, the spraying means including a first extinguishing means for spraying a fire extinguishing agent in the protection target compartment separated by the partitioning means;
Equipped with
A plurality of operation patterns are provided for selectively operating the plurality of scattering means in response to a location where an abnormal event has occurred,
A disaster prevention facility for a hydrogen station, characterized in that, when an abnormal event occurs, a plurality of dispersing means including the first fire extinguishing means operate in an operating pattern corresponding to the location where the abnormal event has occurred.
The disaster prevention equipment of the hydrogen station according to claim 1,
A disaster prevention facility for a hydrogen station, comprising a cooling means for spraying a coolant to the partition means for separating the protected area, as one of the plurality of spray means.
A disaster prevention system for a hydrogen station according to claim 1 or 2,
A disaster prevention facility for a hydrogen station, comprising, as one of the plurality of spraying means, a second fire extinguishing means for spraying a fire extinguishing agent outside the protected compartment separated by the partition means.
A disaster prevention facility for a hydrogen station,
A partition means for surrounding and partitioning a predetermined protected area including an installation area of a dispenser for supplying hydrogen when a predetermined abnormal event occurs;
a plurality of spraying means for spraying a predetermined substance to a predetermined area in order to deal with the abnormal event that has occurred, the spraying means including a first extinguishing means for spraying a fire extinguishing agent in the protection target compartment separated by the partitioning means;
Equipped with
A plurality of operation patterns are provided for selectively operating the plurality of scattering means in response to the type of abnormal event,
A disaster prevention system for a hydrogen station, characterized in that, when an abnormal event occurs, a plurality of dispersing means including the first fire extinguishing means operate in an operation pattern corresponding to the abnormal event that has occurred.
A disaster prevention system for a hydrogen station according to any one of claims 1 to 4,
Disaster prevention equipment for a hydrogen station, characterized in that the abnormal events include hydrogen leaks and compartment fires within the protected compartment, and nearby fires and nearby accidents outside the protected compartment.

Images