JP6964172B2 - Protective wall device - Google Patents

Description

The present invention relates to a protective wall device that surrounds a dispenser that supplies hydrogen in a hydrogen station that supplies hydrogen to a fuel cell vehicle or the like.

Fuel cell vehicles that use hydrogen as fuel do not emit carbon dioxide during driving, nor do they emit substances such as NOx that cause air pollution. In addition, since it is possible to travel several hundred kilometers with a fuel supply of about several minutes, it is more convenient than an electric vehicle that requires time to charge. For this reason, technological development is being carried out for fuel cell vehicles that are expected to become widespread in the future.

Fuel supply to fuel cell vehicles takes place at hydrogen stations. If hydrogen leaks or ignites, it may cause a large-scale explosion, so a fire protection facility will be installed at the hydrogen station. Examples of hydrogen stations equipped with fire protection equipment include those listed in Patent Document 1.

Japanese Unexamined Patent Publication No. 2012-66086

A fire wall will be installed around the hydrogen station to prevent fire. In addition, the arrangement of dispensers that supply hydrogen is also stipulated by law to provide a certain distance from public roads. This distance is determined in consideration of leakage diffusion, blast pressure, flame length, radiant heat, etc. in the event of a fire in the dispenser.

Hydrogen stations are very expensive to construct and are one of the factors that hinder their widespread use. Hydrogen stations require a large site area because the dispenser needs to be separated from the road by a certain amount or more. It is difficult to secure a large site in an urban area, and even if the site can be secured, the land price will be high. For this reason, the construction cost of the hydrogen station becomes higher.

In this regard, it is possible to meet the standards stipulated by law by taking the same measures as keeping the dispenser away from public roads by a certain amount or more. As a measure equivalent to separating the dispenser from a public road by a certain distance or more, for example, the road side of the dispenser may be surrounded by a reinforced concrete barrier, a concrete block barrier, or a steel plate barrier. By taking this measure, the distance between the dispenser and the road can be reduced, so that the required site area can be reduced and the construction cost of the hydrogen station can be reduced. On the other hand, with this measure, the side of the hydrogen station facing the road will be covered with concrete or steel plate, which will deteriorate the design of the hydrogen station and make the store facilities invisible from the road side, for example, from a commercial point of view. It is difficult to adopt from.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a protective wall device capable of improving the design from the road side while surrounding the dispenser of the hydrogen station with a wall.

In order to solve the above problems, the protective wall device according to the invention of claim 1 is a protective wall device installed facing a road and provided in a hydrogen station having a dispenser for supplying hydrogen.
It has a barrier erected on the road-facing side of the dispenser, which is transparent to light.
It has a watering head that sprinkles water on the surface of the barrier to form a water film.
The surface of the barrier on which the water film is formed is characterized in that it has an uneven portion at least in part.

According to the invention of claim 1, the barrier is provided with fire protection to block flames and radiant heat in the event of a fire, while ensuring translucency that allows the hydrogen station dispenser, store facilities, etc. to pass through from the road side. Can be done. Further, since the barrier has uneven portions, an uneven pattern can be formed on the surface of the water film.

Further, the protective wall device according to the second aspect of the present invention is characterized in that the uneven portion is formed by arranging a plurality of convex and concave shapes having a triangular cross section along the height direction.

Further, the protective wall device according to the third aspect of the present invention is characterized in that the uneven portion is formed in a wavy cross section along the horizontal direction.

Furthermore, the protective wall device according to the invention of claim 4 is a protective wall device installed facing a road and provided at a hydrogen station having a dispenser for supplying hydrogen.
It has a barrier erected on the road-facing side of the dispenser, which is transparent to light.
It has a watering head that sprinkles water on the surface of the barrier to form a water film.
An upper part of the barrier is provided with a storage portion for storing a sheet that descends when an abnormality occurs in the hydrogen station and covers the surface of the barrier, and has a display indicating that the sheet is in the process of abnormality.
The watering head is characterized in that when an abnormality occurs in a hydrogen station, water is sprinkled on the sheet that covers the surface of the barrier and exposes an indication indicating that the abnormality is occurring.

According to the invention of claim 4, the barrier is provided with fire protection to block flames and radiant heat in the event of a fire, while ensuring translucency that allows the hydrogen station dispenser, store facilities, etc. to pass through from the road side. Can be done. Further, since the sheet has a display indicating that an abnormality is occurring, it is possible to indicate that an abnormality has occurred.

The protective wall device according to the fifth aspect of the present invention is characterized in that the sheet covers the surface of the barrier on the side facing the dispenser.

Further, the protective wall device according to the invention of claim 6 is characterized in that the sheet covers the surface of the barrier on the side opposite to the side facing the dispenser.

According to the protective wall device according to the present invention, by using the dispenser as a protective wall for arranging the dispenser at a position close to the road in the hydrogen station, the fire resistance in the event of a fire can be improved without impairing the design of the hydrogen station. Can be secured. Further, since the heat resistance of the barrier is increased by sprinkling water on the barrier or the sheet, the barrier can be made thinner. Further, since the barrier has an uneven portion, the design can be made higher. In addition, by having a display indicating that an abnormality is occurring in the sheet, it is possible to make it easier for a passerby or the like on the road to recognize that an abnormality has occurred.

It is a block diagram of the hydrogen station provided with the protective wall device of this embodiment. It is a vertical sectional view of a protective wall device. It is a front view which made the surface side facing the dispenser of a protective wall device front. It is a vertical cross-sectional view of the protective wall device of the 2nd form. It is a vertical cross-sectional view of the protective wall device of the 3rd form. It is a partially enlarged sectional view of the barrier in the protective wall device of 4th form. It is a vertical sectional view of the protective wall device of 5th form. It is a vertical sectional view of the protective wall device of the sixth aspect. It is a vertical cross-sectional view of the protective wall device of the 7th form. It is a vertical sectional view at the time of watering of the protective wall device of the 7th form.

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a configuration diagram of a hydrogen station provided with the protective wall device 5 of the present embodiment. The hydrogen station shown in this figure is configured as an on-site type capable of reforming fuel to produce hydrogen in the station.

As shown in FIG. 1, the hydrogen station of the present embodiment is installed facing the road 1 and is provided in an area surrounded by a predetermined partition wall 2 defined by a law or the like. Within the region surrounded by the partition wall 2, the place where hydrogen is further produced (modified) and stored is surrounded by the partition wall 3 having a height of 2 m or more.

The fuel that is the raw material for hydrogen is stored in the fuel tank 10 provided in the basement of the hydrogen station. The fuel from the fuel tank 10 is sent to the hydrogen production apparatus 11, where the fuel is reformed to produce hydrogen. The produced hydrogen is in a gaseous state, which is sent to the compressor 12 to be compressed and stored in the storage tank 13 in the state of compressed hydrogen.

A dispenser 4 for supplying hydrogen to an automobile is arranged in the hydrogen station. A protective wall device 5 is arranged around the dispenser 4. The protective wall device 5 has a substantially U-shaped barrier 20 in a plan view. The barriers 20 are arranged on both sides of the periphery of the dispenser 4, which are different from the side of the dispenser 4 facing the road 1 and the side of the dispenser 4 facing the road 1, and surround the periphery of the dispenser 4. I'm out.

FIG. 2 shows a vertical cross-sectional view of the protective wall device 5. As shown in this figure, the barrier 20 rises vertically from the ground. The barrier 20 is made of a transparent material. As the transparent material forming the barrier 20, a reinforced transparent resin such as acrylic can be used. Further, tempered glass or the like can be used as the transparent material. Therefore, from the road 1 side, the dispenser 4 and the store facility 6 in the hydrogen station can be seen through the barrier 20.

A fixing member 20a projecting toward the dispenser 4 side is provided at the upper end of the barrier 20, and a watering head 21 is attached to the lower surface of the fixing member 20a. Therefore, the watering head 21 is arranged on the dispenser 4 side of the barrier 20. The watering head 21 can receive the water supply and sprinkle the water toward the barrier 20. The watering head 21 is arranged so as to face diagonally downward at the upper end of the barrier 20 so that water can be sprinkled on the surface of both sides of the barrier 20 facing the dispenser 4. By sprinkling water from the watering head 21 toward the barrier 20, a water film 23 is formed on the surface of the barrier 20 facing the dispenser 4. Since the barrier 20 having the water film 23 formed on the surface can also transmit light, it can be seen through the dispenser 4 and the store facility 6 in the hydrogen station from the road 1 side through the barrier 20.

At the lower part of the barrier 20, the watered water is collected, and the watering head 21 is supplied with water again by the recirculation pump 22. That is, the water sprinkled by the watering head 21 circulates, and water can be saved.

FIG. 3 shows a front view of the protective wall device 5 with the surface side facing the dispenser 4 facing the front. As shown in this figure, a plurality of watering heads 21 are arranged along the horizontal direction, and each watering head 21 is connected to the water supply pipe 25. The water supply pipe 25 supplies water to the watering head 21. In the present embodiment, the water supply pipe 25 supplies water to the watering head 21 regardless of the presence or absence of an abnormality in the hydrogen station. Therefore, the watering head 21 constantly waters the barrier 20. Since water is constantly sprinkled from the watering head 21, a water film 23 is always formed on the surface of the barrier 20, and the design can be enhanced.

Each watering head 21 can water the water in a substantially fan shape. The water sprinkled from the watering head 21 spreads downward and merges with the water sprinkled from the adjacent watering head 21. Therefore, a uniform water film is formed on the surface of the barrier 20 over the entire surface.

The amount of water sprinkled on the barrier 20 is in the range of 5 × 10 ^-5 m ³ / (sec · m ² ) to 1 × 10 ^-3 m ³ / (sec · m ² ) on the surface of the barrier 20. As a result, when a fire breaks out at the hydrogen station and the energy is 100 kW / m ² , the energy can be cut off by the water film.

In this way, the barrier 20 is formed of a translucent material, and water is sprinkled from the upper end of the barrier 20 to the surface of the barrier 20 from the watering head 21 to form a water film, whereby the barrier 20 is formed in the event of a fire. It can protect the flame, block the flame, and have heat resistance to withstand the radiant heat. Therefore, the protective wall device 5 can be provided with fire protection performance while ensuring translucency that allows the dispenser 4 and the store facility 6 to pass through from the road 1 side. As a result, the dispenser 4 can be arranged at a position close to the road 1, and the site area of the hydrogen station can be prevented from becoming large, so that an increase in the construction cost of the hydrogen station can be suppressed.

FIG. 4 shows a vertical cross-sectional view of the protective wall device of the second form. As shown in this figure, the fixing member 20a may be projected on both sides of the dispenser 4 side of the barrier 20 and the side opposite to the dispenser 4, and watering heads 21 may be provided in each to sprinkle water on both sides of the barrier 20. As a result, both sides of the barrier 20 are covered with the water film 23, and the heat shielding property in the event of a fire can be further increased.

FIG. 5 shows a vertical cross-sectional view of the protective wall device of the third embodiment. As shown in this figure, in the present embodiment, a folded-back portion 20b inclined toward the dispenser 4 side is formed at the upper end portion of the barrier 20. A fixing member 20b is provided on the folded-back portion 20b, and the watering head 21 is attached. The watering head 21 sprinkles water obliquely downward toward the surface of the barrier 20 on the dispenser 4 side, and the water forms a water film 23 from the folded-back portion 20b to a vertical surface. In this way, by forming the folded-back portion 20b on the barrier 20 and providing the watering head 21 on the folded-back portion 20b, the barrier 20 can be surrounded not only on the side of the dispenser 4 but also on the upper side by the water film 23. In the event of a fire, the barrier 20 can further block flames and radiant heat.

In the embodiment described so far, the surface of the barrier 20 is a smooth surface, but as shown in FIG. 6, the surface of the barrier 20 on the side where the water film 23 is formed may have an uneven portion 20c. .. By having the uneven portion 20c on the surface of the barrier 20, the uneven pattern is also formed on the surface of the water film 23, and the design can be enhanced. Further, the uneven portion 20c can have various shapes such as wavy shape in the horizontal direction.

FIG. 7 shows a vertical cross-sectional view of the protective wall device of the fifth embodiment. As shown in this figure, in this embodiment, the watering head 21 is arranged on the side of the dispenser 4 facing the barrier 20. The watering head 21 is installed so as to be able to sprinkle water toward the barrier 20, and as shown in FIG. 7, the watering head 21 sprinkles water on the barrier 20 to form a water film on the surface of the barrier 20. 23 is formed. As described above, the watering head 21 does not necessarily have to be provided above the barrier 20. By providing the watering head 21 on the dispenser 4 side, the configuration on the barrier 20 side can be simplified. Further, in the present embodiment, the watering head 21 may constantly sprinkle water toward the barrier 20, or may sprinkle water only when an abnormality is detected in the hydrogen station.

FIG. 8 shows a vertical cross-sectional view of the protective wall device of the sixth embodiment. As shown in this figure, in this embodiment, apart from the barrier 20 and the dispenser 4, columns 26 are provided at predetermined intervals, and a sprinkler head 21 is arranged on a support 27 supported by the columns 26. The watering head 21 is installed so that water can be sprinkled on the surface of the barrier 20, and a water film 23 can be formed on the surface of the barrier 20. As described above, by providing the watering head 21 on the support 27 which is an installation object installed separately from the barrier 20 and the dispenser 4, the configuration of the barrier 20 and the dispenser 4 side can be simplified. Further, the installation object to which the watering head 21 is provided may be one located above the barrier 20, such as the roof of a hydrogen station or lighting equipment. In this case, it is possible to eliminate the need for a dedicated support column 26 or the like as in the present embodiment. When the watering head 21 is provided on an installation object other than the barrier 20 and the dispenser 4, the watering head 21 is either on the side of the barrier 20 facing the dispenser 4 or on the side of the barrier 20 facing the road. It can be arranged to sprinkle water toward one or both. Further, in the present embodiment, the watering head 21 may constantly sprinkle water toward the barrier 20, or may sprinkle water only when an abnormality is detected in the hydrogen station.

FIG. 9 shows a vertical cross-sectional view of the protective wall device of the seventh aspect. As shown in this figure, in this embodiment, a box-shaped storage portion 28 is provided above the barrier 20. The storage unit 28 stores the sheet 29 wound inside. The sheet 29 is formed of a water-absorbent fireproof cloth or the like, and is normally stored in the storage portion 28 as shown in FIG. When an abnormality is detected in the hydrogen station, the sheet 29 can descend from the storage portion 28 to cover the surface of the barrier 20. Further, a watering head 21 is arranged in the storage portion 28 so that water can be sprinkled toward the barrier 20 side.

FIG. 10 shows a vertical cross-sectional view of the protective wall device of the seventh form at the time of abnormality detection. As shown in this figure, when an abnormality is detected, the sheet 29 descends from the storage portion 28 and covers the surface of the dispenser 4 of the barrier 20. Then, the water is sprinkled from the watering head 21 toward the barrier 20, so that the water film 23 is formed on the surface of the sheet 29 that covers the surface of the barrier 20. Therefore, since the surface of the barrier 20 is protected by the sheet 29 and the water film 23, the fire resistance can be improved. In addition, since the sheet 29 has water absorption, the amount of water present on the surface of the barrier 20 is larger than that in the case of directly sprinkling water on the surface of the barrier 20, and the fire resistance can be further improved. can.

The sheet 29 may be plain, but may be displayed with characters or symbols indicating that an abnormality is occurring. As a result, when the abnormality is detected and the seat 29 descends from the storage portion 28, it is possible to make it easier for a passerby or the like on the road to recognize that the abnormality has occurred. Further, in the present embodiment, the sheet 29 is sprinkled over the surface of the barrier 20 facing the dispenser 4, but may be sprinkled over the surface of the barrier 20 facing the road, or also covering both sides of the barrier 20. May be done.

In the present embodiment, the sheet 29 has water absorption, but a sheet material having water content capable of containing water may be used. For example, a sheet material having coarse stitches may be used to retain the sprinkled water in the gaps between the stitches due to surface tension. Further, a sheet material having hydrophilicity may be used. In this case, the sprinkled water easily spreads on the surface of the sheet, and a uniform water film can be formed on the entire sheet.

Although the embodiments of the present invention have been described above, the application of the present invention is not limited to the above-described embodiments, and can be applied in various ways within the scope of the technical idea thereof.

In the above-described embodiment, watering from the watering head 21 is always performed, but when watering is not normally performed and an abnormality such as hydrogen leakage, fire, or equipment temperature rise is detected at the hydrogen station, watering is performed. Water may be sprinkled from the watering head 21. Abnormality detection at a hydrogen station can be performed by arranging a hydrogen leakage sensor in the vicinity of the dispenser 4 and detecting hydrogen leakage with this hydrogen leakage sensor. When hydrogen leakage is detected by the hydrogen leakage sensor, watering is performed from the watering head 21. In addition, an abnormality can be detected at the hydrogen station by using a fire detector or the like. Furthermore, when an abnormality is detected in a store facility, office, or hydrogen-related facility, for example, when a transmitter installed in these is operated, or when a hydrogen leak is detected, a fire or the like is detected from the sensor. When an output is made, water may be sprinkled from the sprinkler head 21 on the assumption that an abnormality has been detected.

Further, the barrier 20 is formed of a transparent material in the above-described embodiment, but it does not have to be transparent as long as it is a translucent material. Further, a surface treatment that scatters light may be performed, such as frosted glass. Further, when watering from the watering head 21 is applied to one side of the barrier 20, in the above-described embodiment, water is sprinkled on the surface of both sides of the barrier 20 facing the dispenser 4, but the road on both sides of the barrier 20. The watering head 21 may be arranged so that water can be sprinkled on the surface facing the watering nozzle.

Further, a part of the watering head 21 may be arranged so as to face the dispenser 4 side, and when an abnormality is detected, the watering head 21 may sprinkle water on the dispenser 4 together with the barrier 20.

1 Road 2 Partition 3 Partition 4 Dispenser 5 Protective wall device 6 Store facility 10 Fuel tank 11 Hydrogen production device 12 Compressor 13 Storage tank 20 Barrier 21 Watering head 22 Recirculation pump 23 Water film 25 Water supply piping

Claims (6)

A protective wall device installed at a hydrogen station with a dispenser that is installed facing the road and supplies hydrogen.
It has a barrier erected on the road-facing side of the dispenser, which is transparent to light.
It has a watering head that sprinkles water on the surface of the barrier to form a water film.
A protective wall device characterized in that the surface of the barrier on which the water film is formed has an uneven portion at least in part. The protective wall device according to claim 1, wherein the uneven portion is formed by arranging a plurality of convex and concave shapes having a triangular cross section along the height direction. The protective wall device according to claim 1, wherein the uneven portion is formed in a wavy cross section along the horizontal direction. A protective wall device installed at a hydrogen station with a dispenser that is installed facing the road and supplies hydrogen.
It has a barrier erected on the road-facing side of the dispenser, which is transparent to light.
It has a watering head that sprinkles water on the surface of the barrier to form a water film.
An upper part of the barrier is provided with a storage portion for storing a sheet that descends when an abnormality occurs in the hydrogen station and covers the surface of the barrier, and has a display indicating that the sheet is in the process of abnormality.
The watering head is a protective wall device that covers the surface of the barrier and sprinkles water on the sheet exposed to indicate that the abnormality is occurring when an abnormality occurs in the hydrogen station. The protective wall device according to claim 4, wherein the sheet covers the surface of the barrier on the side facing the dispenser. The protective wall device according to claim 4, wherein the sheet covers the surface of the barrier on the side opposite to the side facing the dispenser.

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