Protective barrier device and hydrogen station

Abstract

To provide a protective barrier device that surrounds a dispenser of a hydrogen station with a wall and improves the heat resistance of the barrier. [Solution] A protective wall device installed at a hydrogen station that has a dispenser 4 installed on the ground facing a road 1 and that supplies hydrogen, the protective wall device 5 partitions the space between the dispenser 4 and the road 1 with its own wall and leaves at least a portion of the space above the dispenser 4 as an open space, and has a barrier 20 that is erected upward from the ground on the side of the dispenser facing the road and has an open top, and a sprinkler head 21 that forms a water film on the surface of the barrier 20.

Description

[Technical field]

[0001] The present invention relates to a protective wall device that surrounds a dispenser that supplies hydrogen at a hydrogen station that supplies hydrogen to fuel cell vehicles and the like, and to a hydrogen station having the same. [Background technology]

[0002] Fuel cell vehicles, which use hydrogen as fuel, do not emit carbon dioxide while driving, nor do they emit substances such as NOx that cause air pollution. In addition, they can run several hundred kilometers on a few minutes of fuel supply, making them more convenient than electric vehicles, which take time to charge. For this reason, technological development is being carried out for fuel cell vehicles, which are expected to become more widespread in the future.

[0003] Fuel is supplied to fuel cell vehicles at hydrogen stations. If hydrogen leaks and ignites, it could cause a large-scale explosion, so hydrogen stations are equipped with fire prevention equipment. For example, Patent Document 1 lists a hydrogen station equipped with fire prevention equipment. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-66086 A Summary of the Invention [Problem to be solved by the invention]

[0005] To prevent fires at hydrogen stations, fire walls are installed around them. In addition, hydrogen dispensers are required by law to be located at a certain distance from public roads. This distance is determined taking into consideration factors such as the spread of leakage, blast pressure, flame length, and radiant heat in the event of a fire at the dispenser.

[0006] Hydrogen stations are very expensive to build, which is one of the factors that hinder their widespread use. Hydrogen stations require a large amount of land area because the dispensers must be located a certain distance away from the road. It is difficult to secure a large site in urban areas, and even if a site can be secured, the land price is high. This is one of the factors that makes the construction cost of hydrogen stations even higher.

[0007] In this regard, it is possible to satisfy the standards set by laws and regulations by taking measures equivalent to placing the dispenser at a certain distance from the public road. For example, measures equivalent to placing the dispenser at a certain distance from the public road include surrounding the road side of the dispenser with a reinforced concrete barrier, a concrete block barrier, or a steel plate barrier. By taking such measures, the distance between the dispenser and the road can be reduced, which reduces the required land area and reduces the construction costs of the hydrogen station.

[0008] The present invention has been made in consideration of the above problems, and is a method for enclosing a dispenser at a hydrogen station with a wall. That's right. The object is to provide a protective barrier device and a hydrogen station having the same. [Means for solving the problem]

[0009] In order to solve the above problems, the protective barrier device according to the invention of claim 1 is a protective barrier device installed at a hydrogen station that is installed on the ground facing a road and has a dispenser that supplies hydrogen, The dispenser is installed upright on the side facing the road from the ground, A partition is formed between the dispenser and the road by a wall of the dispenser itself, and The upper end is located closer to the road than the end face of the dispenser opposite to the road side, At least a portion of the space above the dispenser closure Barriers to and a water sprinkler head that sprinkles water onto at least the surface of the barrier facing the dispenser to form a water film.

[0010] The protective wall device according to the invention of claim 2 is characterized in that the surface of the barrier on which the water film is formed has at least a portion having an uneven surface.

[0011] The protective barrier device according to the invention of claim 3 is characterized in that the barrier has optical transparency.

[0012] The hydrogen station according to the invention of claim 4 comprises a dispenser that is installed on the ground facing a road and supplies hydrogen; The dispenser is installed upright on the side facing the road from the ground, A partition is formed between the dispenser and the road by a wall of the dispenser itself, and The upper end is located closer to the road than the end face of the dispenser opposite to the road side, At least a portion of the space above the dispenser Close A protective barrier device having a barrier and a water sprinkler head for sprinkling water on at least a surface of the barrier facing the dispenser to form a water film; The present invention is characterized in that it is provided with: Effect of the Invention

[0013] According to the protective barrier device of the present invention, the heat resistance of the barrier can be increased by spraying water onto the barrier, thereby ensuring fire prevention in the event of a fire. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a configuration diagram of a hydrogen station equipped with a protective wall device of the present embodiment. [Diagram 2] FIG. 2 is a vertical cross-sectional view of the protective barrier device. [Diagram 3] FIG. 2 is a front view of the protective wall device, with the surface side facing the dispenser as the front. [Figure 4] FIG. 4 is a vertical cross-sectional view of a protective barrier device according to a second embodiment. [Diagram 5] FIG. 11 is a vertical sectional view of a protective barrier device according to a third embodiment. [Figure 6] FIG. 11 is a partially enlarged cross-sectional view of a barrier in a protective barrier device of a fourth embodiment. [Figure 7] FIG. 11 is a vertical sectional view of a protective barrier device according to a fifth embodiment. [Figure 8] FIG. 13 is a vertical cross-sectional view of a protective barrier device according to a sixth embodiment. [Figure 9] FIG. 13 is a vertical cross-sectional view of a protective barrier device of a seventh embodiment. [Figure 10] FIG. 13 is a vertical cross-sectional view of the protective barrier device of the seventh embodiment when water is being sprayed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] An embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 shows a configuration diagram of a hydrogen station equipped with a protective wall device 5 of this embodiment. The hydrogen station shown in this figure is configured as an on-site type capable of producing hydrogen within the station by reforming fuel.

[0016] As shown in Fig. 1, the hydrogen station of this embodiment is installed facing a road 1 and is provided in an area surrounded by a specific partition wall 2 prescribed by laws and regulations. Within the area surrounded by partition wall 2, the area where hydrogen is produced (reformed) and stored is further surrounded by partition wall 3 that is 2m or more in height.

[0017] The fuel that is the raw material for hydrogen is stored in a fuel tank 10 installed underground at the hydrogen station. The fuel from the fuel tank 10 is sent to a hydrogen production device 11, where the fuel is reformed to produce hydrogen. The produced hydrogen is in a gaseous state, and is sent to a compressor 12 where it is compressed, and is stored in a storage tank 13 in the form of compressed hydrogen.

[0018] A dispenser 4 that supplies hydrogen to automobiles is disposed within the hydrogen station. A protective wall device 5 is disposed around the dispenser 4. The protective wall device 5 has a barrier 20 that is roughly U-shaped in plan view. The barriers 20 are disposed on both sides of the periphery of the dispenser 4, one side facing the road 1 and the other side of the dispenser 4 that faces the road 1, and surround the periphery of the dispenser 4.

[0019] 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. A reinforced transparent resin such as acrylic can be used as the transparent material for forming the barrier 20. Reinforced glass can also be used as the transparent material. Therefore, from the road 1 side, the dispenser 4 and the store facilities 6 in the hydrogen station can be seen through the barrier 20.

[0020] A fixing member 20a protruding toward the dispenser 4 is provided at the upper end of the barrier 20, and a water sprinkler head 21 is attached to the lower surface of the fixing member 20a. Therefore, the water sprinkler head 21 is disposed on the dispenser 4 side of the barrier 20. The water sprinkler head 21 can receive water and sprinkle water toward the barrier 20. The water sprinkler head 21 is disposed at the upper end of the barrier 20 so as to face diagonally downward so as to be able to sprinkle water on the side of the barrier 20 facing the dispenser 4. By sprinkling water from the water sprinkler head 21 toward the barrier 20, a water film 23 is formed on the surface of the barrier 20 facing the dispenser 4. The barrier 20 with the water film 23 formed on its surface can also transmit light, so that the dispenser 4 and the store facilities 6 in the hydrogen station can be seen through the barrier 20 from the road 1 side.

[0021] The sprayed water is collected below the barrier 20, and is supplied again to the sprinkler head 21 by the recirculation pump 22. In other words, the water sprayed by the sprinkler head 21 is circulated, which contributes to water conservation.

[0022] 3 shows a front view of the protective wall device 5 with the surface facing the dispenser 4 facing the front. As shown in this figure, a plurality of sprinkler heads 21 are arranged along the horizontal direction, and each sprinkler head 21 is connected to a water supply pipe 25. The water supply pipe 25 supplies water to the sprinkler head 21. In this embodiment, the water supply pipe 25 supplies water to the sprinkler head 21 regardless of whether there is an abnormality in the hydrogen station. For this reason, the sprinkler head 21 constantly sprinkles water onto the barrier 20. Since the sprinkler head 21 constantly sprays water, a water film 23 is constantly formed on the surface of the barrier 20, improving the design.

[0023] Each sprinkler head 21 can sprinkle water in a generally fan-shaped manner. The water sprinkled from each sprinkler head 21 spreads downward and merges with the water sprinkled from the adjacent sprinkler head 21. As a result, a uniform water film is formed over the entire surface of the barrier 20.

[0024] The amount of water sprayed on the barrier 20 is 5×10 -5 m 3 / (sec m 2 )~1×10 -3 m 3 / (sec m 2 ) range. This would cause a fire at a hydrogen station, and the energy of the fire would be 100 kW / m 2 In this case, the energy can be blocked by a water film.

[0025] In this way, by forming the barrier 20 from a light-transmitting material and spraying water from the water sprinkler head 21 onto the surface of the barrier 20 from the upper end of the barrier 20 to form a water film, the barrier 20 can be protected in the event of a fire, blocking the flames and providing heat resistance to radiant heat. This makes it possible to provide a protective wall device 5 that has fire prevention performance while ensuring light transmissivity that allows the dispensers 4 and store facilities 6 to pass through from the road 1 side. This allows the dispensers 4 to be located close to the road 1, and the site area of ​​the hydrogen station can be prevented from becoming large, thereby suppressing increases in the construction costs of the hydrogen station.

[0026] 4 shows a vertical cross-sectional view of the protective barrier device of the second embodiment. As shown in this figure, the fixing members 20a may be protruded on both sides of the barrier 20, the dispenser 4 side and the opposite side, and a water sprinkler head 21 may be provided on each side to sprinkle water on both sides of the barrier 20. This allows both sides of the barrier 20 to be covered with a water film 23, thereby improving the heat insulation in the event of a fire.

[0027] 5 shows a vertical cross-sectional view of a protective barrier device of the third embodiment. As shown in this figure, in this embodiment, a folded portion 20b is formed at the upper end of the barrier 20 inclined toward the dispenser 4 side. A fixing member 20 is attached to the folded portion 20b. a is provided, and a sprinkler head 21 is attached to it. The sprinkler head 21 sprinkles water obliquely downward toward the surface of the barrier 20 facing the dispenser 4, and the water forms a water film 23 from the folded portion 20b to the vertical surface. In this way, by forming the folded portion 20b in the barrier 20 and providing the sprinkler head 21 at the folded portion 20b, the dispenser 4 can be surrounded not only on the sides but also above by the barrier 20 covered with the water film 23, and in the event of a fire, the barrier 20 can better block flames and radiant heat.

[0028] In the embodiment described so far, the surface of the barrier 20 is a smooth surface, but as shown in Fig. 6, the barrier 20 may have an uneven portion 20c on the surface on which the water film 23 is formed. By having the uneven portion 20c on the surface of the barrier 20, an uneven pattern is also formed on the surface of the water film 23, improving the design. In addition, the uneven portion 20c can be formed in various shapes, such as a wavy shape in the horizontal direction.

[0029] FIG. 7 shows a vertical cross-sectional view of a protective wall device of the fifth embodiment. As shown in this figure, in this embodiment, the sprinkler head 21 is disposed on the side of the dispenser 4 facing the barrier 20. The sprinkler head 21 is installed so as to be able to sprinkle water toward the barrier 20, and as shown in FIG. 7, a water film 23 is formed on the surface of the barrier 20 by sprinkling water from the sprinkler head 21 toward the barrier 20. In this way, the sprinkler head 21 does not necessarily have to be provided on the upper part of the barrier 20. By providing the sprinkler head 21 on the dispenser 4 side, the configuration of the barrier 20 side can be simplified. In addition, in this embodiment, the sprinkler head 21 may constantly sprinkle water toward the barrier 20, or may sprinkle water only when an abnormality is detected in the hydrogen station.

[0030] FIG. 8 shows a vertical cross-sectional view of a protective wall device of the sixth embodiment. As shown in this figure, in this embodiment, in addition to the barrier 20 and the dispenser 4, pillars 26 are provided at predetermined intervals, and the sprinkler heads 21 are arranged on the supports 27 supported by the pillars 26. The sprinkler heads 21 are installed so that they can sprinkle water on the surface of the barrier 20, and can form a water film 23 on the surface of the barrier 20. In this way, by providing the sprinkler heads 21 on the supports 27, which are installations installed separately from the barrier 20 and the dispenser 4, the configuration of the barrier 20 and the dispenser 4 side can be simplified. In addition, the installation on which the sprinkler heads 21 are provided may be anything located above the barrier 20, such as the roof or lighting equipment of a hydrogen station. In this case, a dedicated support 26 as in this embodiment can be eliminated. Furthermore, when the sprinkler head 21 is provided on an installation other than the barrier 20 and the dispenser 4, the sprinkler head 21 can be positioned so as to sprinkle water toward either or both of the side of the barrier 20 facing the dispenser 4 and the side of the barrier 20 facing the road. Furthermore, in this embodiment, the sprinkler head 21 may constantly sprinkle water toward the barrier 20, or may sprinkle water only when an abnormality is detected in the hydrogen station.

[0031] FIG. 9 shows a vertical cross-sectional view of a protective barrier device of the seventh embodiment. As shown in this figure, in this embodiment, a box-shaped storage section 28 is provided on the upper part of the barrier 20. The storage section 28 stores a sheet 29 that is rolled up inside. The sheet 29 is made of a water-absorbent fireproof cloth or the like, and is normally stored in the storage section 28 as shown in FIG. 9. When an abnormality is detected in the hydrogen station, the sheet 29 can descend from the storage section 28 to cover the surface of the barrier 20. In addition, a water sprinkler head 21 is arranged in the storage section 28 so that water can be sprinkled toward the barrier 20.

[0032] FIG. 10 shows a vertical cross-sectional view of the seventh embodiment of the protective barrier device when an abnormality is detected. As shown in this figure, when an abnormality is detected, the sheet 29 descends from the storage section 28 to cover the surface of the dispenser 4 of the barrier 20. Then, water is sprayed from the water spray head 21 toward the barrier 20, forming a water film 23 on the surface of the sheet 29 covering the surface of the barrier 20. Therefore, the surface of the barrier 20 is protected by the sheet 29 and the water film 23, so that 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 greater than when water is sprayed directly on the surface of the barrier 20, so that the fire resistance can be improved.

[0033] The sheet 29 may be plain, or may have characters or symbols indicating that an abnormality is occurring. This allows passersby on the road to easily recognize that an abnormality is occurring when an abnormality is detected and the sheet 29 descends from the storage section 28. In this embodiment, the sheet 29 covers the surface of the barrier 20 facing the dispenser 4 to be sprayed with water, but the sheet 29 may also cover the surface facing the road to be sprayed with water, or both sides of the barrier 20 to be sprayed with water.

[0034] In this embodiment, the sheet 29 has water absorption properties, but it is sufficient that the sheet material used is water-absorbent and capable of absorbing water. For example, a sheet material having a coarse stitch may be used so that the sprinkled water is retained in the gaps between the stitches by surface tension. Alternatively, a hydrophilic sheet material may be used. In this case, the sprinkled water spreads easily on the surface of the sheet, and a uniform water film can be formed over the entire sheet.

[0035] 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 the present invention can be applied in various ways within the scope of its technical concept.

[0036] In the above embodiment, the sprinkling head 21 is always sprayed, but it may be configured not to spray water under normal circumstances, but to spray water from the sprinkling head 21 when an abnormality such as a hydrogen leak, a fire, or a temperature rise in the equipment is detected at the hydrogen station. An abnormality detection at the hydrogen station can be performed by disposing a hydrogen leak sensor near the dispenser 4 and detecting a hydrogen leak with the hydrogen leak sensor. When a hydrogen leak is detected by the hydrogen leak sensor, water is sprayed from the sprinkling head 21. An abnormality detection at the hydrogen station can also be performed by 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 therein is operated, when a hydrogen leak is detected, or when a fire or the like is output from a sensor, it may be configured to spray water from the sprinkling head 21 as an abnormality being detected.

[0037] In the above embodiment, the barrier 20 is made of a transparent material, but it does not have to be transparent as long as the material is translucent. The barrier 20 may also be surface-treated to scatter light, such as frosted glass. In addition, when water is sprayed from the watering head 21 onto one side of the barrier 20, in the above embodiment, water is sprayed onto the side of the barrier 20 facing the dispenser 4, but the watering head 21 may be arranged so that water can be sprayed onto the side of the barrier 20 facing the road.

[0038] In addition, a portion of the water sprinkler head 21 may be arranged to face the dispenser 4 side, so that when an abnormality is detected, the water sprinkler head 21 sprinkles water not only on the barrier 20 but also on the dispenser 4. [Explanation of symbols]

[0039] 1 road 2 Bulkhead 3 Bulkhead 4 Dispenser 5 Protective wall device 6. Shop facilities 10. Fuel Tank 11 Hydrogen production equipment 12 Compressor 13 Storage Tank 20 Barriers 21 Sprinkler head 22 Recirculation Pump 23 Water film 25 Water supply piping

Claims

1. A protective barrier device to be installed at a hydrogen station having a dispenser for supplying hydrogen, the dispenser being installed on the ground facing a road, a barrier that is erected upward from the ground on the side of the dispenser facing the road, thereby partitioning the space between the dispenser and the road with its own wall, and has an upper end that is located closer to the road than the end face of the dispenser opposite to the road side, thereby closing off at least a part of the space above the dispenser; A protective barrier device comprising: a water sprinkler head that sprinkles water onto at least the surface of the barrier facing the dispenser to form a water film.

2. 2. The protective wall device according to claim 1, wherein the surface of the barrier on which the water film is formed has at least a portion having projections and recesses.

3. 3. The protective barrier device according to claim 1, wherein the barrier is light-transmitting.

4. A hydrogen dispenser is installed on the ground facing the road to supply hydrogen. a barrier that is erected upward from the ground on the side of the dispenser facing the road, partitioning the space between the dispenser and the road with its own wall surface and that has an upper end that is located closer to the road than the end face of the dispenser opposite to the road side, thereby closing off at least a portion of the space above the dispenser; and a protective barrier device having a water sprinkling head that sprinkles water on at least the surface of the barrier that faces the dispenser to form a water film; A hydrogen station comprising:

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