JP2001227200A - Hydrogen gas cylinder building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydrogen gas cylinder building which can alleviate damage in the event of hydrogen gas explosion, and effectively use a space other than a danger district by specifying the danger district. SOLUTION: The hydrogen gas cylinder building including a concrete wall as a component part is built on a semi-basement floor, such that explosion gas generated in the event of hydrogen gas explosion blows out a roof which is formed of a lightweight member and arranged so as to be exposed on the ground. Therefore, the hydrogen gas is only upward emitted, to thereby restrain the concrete wall from scattering into the surroundings.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrogen gas cylinder building for storing a hydrogen gas cylinder supplied to a hydrogen-cooled generator or the like in a power plant.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional hydrogen gas cylinder building 101.
FIG. 2 is a cross-sectional view showing a hydrogen gas cylinder 101 stored in a storage room 101c of a hydrogen gas cylinder building 101a; 102, a concrete floor on which the hydrogen gas cylinder 101 is mounted; 103, a hydrogen gas cylinder 10;
Reference numeral 104 denotes a concrete wall, reference numeral 104 denotes a ventilation gallery attached to a lower portion of the concrete wall 103, and reference numeral 105 denotes a corrugated slate roof attached to an upper portion of the hydrogen gas cylinder 101.

[0003] Next, each equipment configuration will be described. The hydrogen gas cylinder 101 is stored in a storage room 101c surrounded by a concrete wall 103 in order to avoid a temperature rise due to direct sunlight. Further, a ventilation gallery 104 is attached to a lower portion of the concrete wall 103 in order to release hydrogen gas from leaking. Further, a slate roof 105 with a corrugated slate which is easily damaged is attached so that an explosive gas can be urgently discharged when the gas leaking from the hydrogen gas cylinder 101 is ignited and exploded, and the cylinder is normally protected from rain.

A conventional hydrogen gas cylinder building 101a is a turbine building 10 having a hydrogen generator consuming hydrogen gas.
1b, it is located on the ground level to facilitate the loading and unloading of cylinders. According to the NFPA standard at overseas plants, non-explosion-proof electrical equipment cannot be placed around the building because the explosion-proof area is within 7.6 m unless the cylinder room is a fireproof structure with a fireproof structure for 2 hours. Since the turbine building 101b is a normal ventilation building and a ventilation fan is attached to the wall, the hydrogen gas cylinder building 101a
Is required to be separated from the turbine building 101b by a horizontal distance of 7.6 m or more, and the arrangement is restricted.

In particular, in an actual plant, the turbine building 101
One of b is a transformer area, and there is no space for disposing the hydrogen gas cylinder building 101a for securing a separation distance from the Fire Service Law, installing a fire wall for the transformer, and the like. In addition, there is a boiler on the other side of the turbine building 101b, and there is also a problem that there is no space for arranging the hydrogen gas cylinder building 101a for securing the explosion-proof range. It is necessary to make the whole fireproof structure with a fireproof structure for 2 hours. In that case, a sufficient ventilation structure, hydrogen gas leak detector and fire extinguishing equipment are necessary, and there are problems in terms of cost and construction period. Was. In addition, since the explosion limit of hydrogen gas is as wide as 4% to 76%, if the detection of gas leak is delayed, it will be in a situation where ignition and explosion will occur sufficiently. And the like.

[0006] Also, Japanese Patent Application Laid-Open No. 9-79005 discloses that
An example of a compact structure of a turbine building in a thermal power plant is shown.The high building has a high ceiling that houses the steam turbine and a low ceiling that houses the generator connected to the end of the steam turbine. An example is shown in which the low building is formed as one space, and the overhead crane is installed only in the high building.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and when a hydrogen gas explodes, a concrete wall of a hydrogen gas cylinder building scattered by the gas explosion is placed on the ground. It is intended to reduce damage to other equipment and human body due to scattering by burying, and to avoid danger by specifying a danger area by making an explosion gas escape port at the top. It is another object of the present invention to bury the structure underground so that the space above the ground can be effectively used. Another object is to reduce the damage to other facilities by explosion by installing a hydrogen gas cylinder building above the power plant building with outdoor power generation facilities.

[0008]

A hydrogen gas cylinder building according to the present invention has a storage room for storing a hydrogen gas cylinder which is surrounded by a concrete wall and is covered with a roof which is at least partially damaged and opened by explosive gas. The concrete wall is buried in the ground so that the storage room is semi-underground, and the roof is exposed above the ground.

Further, a hydrogen gas cylinder building according to the present invention is provided with a storage room which is surrounded by a concrete wall and stores a hydrogen gas cylinder, and an explosion gas discharge port communicating from the storage room to the outside, and the storage room is buried underground. Is what is being done.

Further, a hydrogen gas cylinder building according to the present invention includes a car member for storing a hydrogen gas cylinder, a roof covering an upper part of the car member, and a bombardment cartridge composed of a sunlight shielding plate covering a side surface of the car member. A building is constituted by arranging a plurality of the above-mentioned cylinder cards successively.

Further, in the hydrogen gas cylinder building according to the present invention, in addition to the above-described configuration, a building in which a plurality of cylinder cards are continuously arranged is surrounded by a wire net having an anti-inflammatory effect.

Further, in the hydrogen gas cylinder building according to the present invention, in the above structure, the building in which a plurality of cylinder cards are continuously installed is arranged on the roof of a turbine building or the roof of an outdoor power generation facility. It is.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Embodiment 1 of the present invention will be described with reference to FIG. In this FIG.
1a is a hydrogen gas cylinder building, 1 is a hydrogen gas cylinder building 1
a, a hydrogen gas cylinder stored in the storage room 1c, 2 a concrete floor on which the hydrogen gas cylinder 1 is placed, 3 a concrete wall surrounding the hydrogen gas cylinder 1, 11 a wire mesh attached to an upper portion of the concrete wall 3 of the building, Reference numeral 5 denotes a slate roof attached to the upper part of the hydrogen gas cylinder 1, which is at least partially damaged and opened by explosive gas, 12 denotes a drain pit for collecting rainwater entering the concrete floor 2, 13 denotes a drain pit 6. It is a drainage pump installed in.

Next, each equipment configuration will be described. The concrete wall 3 is buried in the ground, and the storage room 1c is of a semi-underground type, which prevents the concrete wall 3 from being scattered by an explosion caused by a gas leak of the hydrogen gas cylinder 1.
Also, a wire mesh 11 attached to the upper part of the concrete wall 3
Escapes gas leaking from the hydrogen gas cylinder 1 and the corrugated slate roof 5 prevents temperature rise due to direct sunlight on the hydrogen gas cylinder 1 and prevents the hydrogen gas cylinder 1 from rainfall.
Is protected. Rainwater that has entered the concrete floor 2 is collected by a drain pit 12 and drained by a drain pump 13 installed in the drain pit 12.

Since the hydrogen gas cylinder building 1a thus constructed is of a semi-underground type, even when a hydrogen gas explosion occurs, the explosion gas is discharged upward by blowing off the corrugated slate roof 5 or the like. In addition, since the concrete wall 3 forming the storage room 1c surrounding the building can be prevented from scattering around, it is possible to reduce damage due to an explosion accident. In addition, since the dangerous area from which the explosive gas is released is specified above the hydrogen gas cylinder building 1a, other spaces can be effectively used. The structure of the hydrogen gas cylinder building 1a is not limited to that provided with the turbine generator,
It goes without saying that it is possible to arrange the hydrogen gas cylinder close to the plant that needs to be stocked.

Second Embodiment In the first embodiment, the concrete wall 3 is buried in the ground, and the storage room 1c is semi-underground. No. 3 has been described to prevent scattering. In the second embodiment, as shown in FIG. 2, an example is shown in which a storage room 1c of a hydrogen gas cylinder building 1a is buried underground. Underground hydrogen gas cylinder building 1a
By doing so, the space on the ground can be used effectively, and the explosive gas outlets 7a and 7b can be set at specific locations, so that a danger zone can be specified and danger can be avoided.

The storage room 1 of the hydrogen gas cylinder building 1a
An alarm device 6 is attached to the ceiling of c. One explosion gas discharge port 7a is formed of a wall which constitutes a storage wall 1c of the hydrogen gas cylinder building 1a, which is easily damaged so that the explosion gas can escape, and a ventilation passage leading to the ground is provided outside the wall. It is composed of Another explosion gas outlet 7b is provided with a ventilation passage that penetrates directly above the ground from the storage room 1c of the hydrogen gas cylinder building 1a. The purpose of this is to prevent rainwater and the like from entering the upper part of the ventilation passage. Thus, a lightweight roof 5a is arranged.

Embodiment 3 In Embodiment 2 described above,
It has been described that by burying the hydrogen gas cylinder building 1a underground, the space above the ground can be used effectively.
As shown in FIG. 3, there is no need to install other facilities such as the roof of the outdoor power generation facility or the roof of the turbine building 1 b, and even if the cylinders 40 are continuously arranged in a place having a ventilation effect, the leakage of the hydrogen gas can be prevented early. At the same time as the explosion, thereby avoiding damage to other facilities. Bombardure 4
Reference numeral 0 denotes a car member 43 for accommodating, for example, about twenty hydrogen gas cylinders 1, a roof 41 attached to an upper portion of the car member 43, and a sunlight shielding plate 4 arranged on a side surface of the car member 43.
2. In addition, the uniting of the hydrogen gas cylinder 1 makes it possible to carry in / out the roof using the crane 9.

As a method of continuous arrangement, for example,
A method of arranging a plurality of cylinder cards 40 side by side, a method of fixing and arranging adjacent cylinder cards 40 by a method such as a hole-in anchor, and a method of arranging two cylinders adjacent to each other with a U-shaped metal fitting. There is a method of connecting and arranging by hanging over the curdle 40.

Embodiment 4 In Embodiment 3 described above,
There has been described a case in which there is no other equipment installed, such as the roof of an outdoor power generation facility or the roof of the turbine building 1b, and the bombardard 40 having the roof 41 and the sun-shielding plate 42 is continuously arranged in a place having a ventilation effect. However, as shown in FIG. 4, the fire spread by a fire can be prevented by putting the cylinder card 40 into a hut constituted by a wire netting 52 having a fire-extinguishing effect (hereinafter, referred to as a fire-extinguishing wire net 52). In addition, the flame net 52 for flame quenching has a hydrogen gas quenching distance of 0.3 mm.
It is a wire mesh with a mesh smaller than 6 mm and a fine mesh of 40 mesh or more.

[0021]

As described above, according to the present invention, the storage chamber for storing the hydrogen gas cylinder is of a semi-underground type or an underground type, so that the concrete that constitutes the storage chamber due to the explosion caused by the gas leakage of the hydrogen gas cylinder is provided. Because it is possible to prevent the wall from scattering and identify the explosive gas outlet to avoid danger, it does not damage other equipment or the human body,
There is an effect that the ground space can be effectively used.

In addition, even if a gas explosion occurs by continuously arranging cylinders that have been subjected to rainfall, insolation, and quenching measures on the roof of an outdoor power generation facility or the roof of a turbine building where no other equipment or people enter and exit. It does not damage other facilities or the human body, and the space on the ground can be used effectively.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a hydrogen gas cylinder building according to Embodiment 1 of the present invention.

FIG. 2 is a sectional view showing a hydrogen gas cylinder building according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view and a bird's-eye view of a hydrogen gas cylinder building according to a third embodiment of the present invention.

FIG. 4 is a bird's-eye view of a facility showing a hydrogen gas cylinder building according to a fourth embodiment of the present invention.

FIG. 5 is a sectional view showing a conventional gas cylinder building.

[Explanation of symbols]

1a Hydrogen gas cylinder building, 1b Turbine building, 1
Hydrogen gas cylinder, 2 concrete floor, 3 concrete wall, 4 ventilation gallery, 5 slate roof with wave, 5
a roof, 6 alarms, 7a, 7b explosive gas outlet,
9 crane, 11 wire mesh, 12 drainage pit, 13
Drainage pump, 40 cylinder, 41 roof, 42
Sunlight shielding plate, 43 cage members, 52 wire netting for flame extinguishing.

Claims (5)

[Claims] 1. A storage room which is surrounded by a concrete wall, is at least partially damaged by an explosive gas and is opened by being opened, and has a storage room for storing a hydrogen gas cylinder, wherein the storage room is semi-underground. Wherein the concrete wall is buried in the ground and the roof is exposed above the ground. 2. A storage room, which is surrounded by a concrete wall and stores a hydrogen gas cylinder, and an explosion gas discharge port communicating from the storage room to the outside, wherein the storage room is buried underground. Hydrogen gas cylinder building. 3. A cage member for storing a hydrogen gas cylinder,
Hydrogen, comprising: a roof covering an upper part of the car member, and a cylinder cover made of a sunlight shielding plate covering a side surface of the cage member, wherein a building is constituted by arranging a plurality of the cylinders successively. Gas cylinder building. 4. The hydrogen gas cylinder building according to claim 3, wherein the building in which a plurality of cylinder cardlets are continuously arranged is surrounded by a wire mesh having an anti-inflammatory effect. 5. The hydrogen according to claim 3, wherein the building in which a plurality of cylinders are continuously installed is disposed on a roof of a turbine building or a roof of an outdoor power generation facility. Gas cylinder building.