Gas Cylinder Cooling Cover

Abstract

To provide a gas cylinder cooling cover which can simply, reliably, inexpensively and without the trouble of water cooling gas cylinders, and can keep gas cylinders such as acetylene, oxygen, propane, hydrogen and LPG, which are installed and used especially under the scorching sun of midsummer amid the recent abnormal weather caused by global warming, at a safe temperature by simply covering the gas cylinder. The gas cylinder cooling cover 10 is a cover that covers the gas cylinder and is made of a sheet material made of a radiative cooling material.

Description

[Technical field]

[0001] The present invention relates to a gas cylinder cooling cover. [Background technology]

[0002] When welding or other work is done under the blazing sun, if a gas cylinder placed outside is exposed to direct sunlight and becomes hot and high pressure, it may explode, which is very dangerous. Therefore, gas cylinders are usually equipped with a safety valve to prevent the inside from becoming high pressure, but if the safety valve is activated and the gas runs out before use (during transportation) or during use, it will hinder work, and there is also a risk of the gas discharged from the safety valve catching fire. Furthermore, there have been actual accidents where the gas exploded when ignited. For this reason, welding work should be avoided as much as possible outdoors under the blazing sun, but if it is unavoidable, measures must be taken to prevent the temperature of the gas cylinder from rising. In other words, Article 60, paragraph 7 of the Container Safety Regulations requires that flammable or toxic gases be used in a well-ventilated place and that the temperature of the container (gas cylinder) be kept below 40°C.

[0003] Conventionally, as a means for preventing the temperature rise of gas cylinders installed outdoors, it has been known to cover them with a cover. For example, a heat insulating sheet, a heat ray reflecting sheet, or a combination of these have been used as a cover, but when working outdoors on days when the outside temperature exceeds 30°C, the temperature of the gas cylinder exceeds the usage limit of 40°C in a short time, and this is not a sufficient means for preventing the temperature rise. A countermeasure to this problem is to cover the cylinder with a water-absorbing sheet and supply water to it to cool it, but supplying water is troublesome, and if the water runs out, the temperature will suddenly exceed 40°C under the scorching sun in summer. This is an urgent problem due to the abnormally high temperatures in summer caused by global warming in recent years.

[0004] In this situation, a new material that combines heat ray reflection and radiative cooling functions has been developed in recent years, is steadily becoming available on the market, and is attracting attention as a heat shielding sheet.

[0005] [Patent Document 1] Japanese Patent Application Publication No. 52-148818 [Patent Document 2] Japanese Utility Model Application Publication No. 55-165200 [Patent Document 3] Patent No. 7086247 [Patent Document 4] Patent No. 6944013 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0006] The present invention seeks to eliminate the above-mentioned drawbacks of the prior art and to provide a gas cylinder cooling cover that can reliably cool gas cylinders with a simple structure and prevent accidents during outdoor welding work, etc. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention provides a substantially cylindrical bag-shaped cover for covering a gas cylinder, made of a radiative cooling material, and the cover material is formed from a radiative cooling material.

[0008] Here, the radiative cooling material is a material that combines a heat-shielding function (reflectance of 95% or more) that blocks sunlight and reduces heat absorption, with a radiative cooling function (emissivity of 95% or more) that amplifies infrared rays in the wavelength range of the "atmospheric window" and releases heat by radiating into space, and can be made of canvas, film, sheet, etc.

[0009] 1 shows the deployed state of cover 10 which is wrapped around the cylindrical portion of tank 1, and is rectangular in shape to cover the entire cylindrical outer periphery of tank 1 according to the size of the tank, with fasteners 11, 12 such as male and female hook-and-loop fasteners attached along the left and right edges in the figure, and cover 10 wrapped around the outer periphery of tank 1 is fixed by fasteners 11, 12. If the bottom portion of valve portion 13 at the top of cylinder 1 is also to be covered, several roughly fan-shaped cover pieces 10A, 10B, 10C, etc. can be extended continuously from the upper end of cover 10 to cover the top portion as well. The fasteners 11 and 12 may be any other suitable fasteners such as double-sided tape, hooks, etc., in addition to the flat fasteners described above.

[0010] The cover 10 may be formed in advance into a cylindrical shape of a size corresponding to the size of the tank 1. In addition to the cylindrical shape, the cover 10 may also be applied to a potbelly-shaped tank.

[0011] This cover 10 is used by being installed around the outer periphery of the tank 1 as shown in Figure 2. Even when installed under the scorching sun of midsummer, the heat absorption of the heat rays of the sun is suppressed by the heat-shielding function of the radiative cooling material, and the surface temperature of the tank 1 can be maintained at 40°C or less by the radiative cooling function that amplifies infrared rays in the wavelength range of the "atmospheric window" and dissipates heat by radiating it into space.

[0012] When comparing the surface temperatures of the parts exposed to direct sunlight and the shaded parts of a gas cylinder with and without the cover, without the cover, when the cylinder is exposed to direct sunlight and the outside temperature exceeds 30°C, the surface temperature reaches 45°C or higher, whereas when the cylinder is covered with the cover of the present invention, the surface temperature does not exceed 35°C.

[0013] In other words, even at the shoulder of the gas cylinder, where the temperature is the highest, the maximum temperature is 35°C, and it can be said that the temperature of the gas cylinder can be kept below the usage limit of 40°C even outdoors in midsummer.

[0014] Figure 3 shows several types of cover 10 made of radiative cooling material used in this invention, but any type may be used as long as it has both reflection and radiative cooling functions. Figure 3 (A) shows an example of a resin material layer of a specific composition laminated on a light-reflecting layer via a protective layer, for example, an example of a material sold as a radiative cooling functional material, (B) shows an example of a functional layer having both reflection and radiative cooling functions laminated on a base fabric via a primer, and (C) shows an example of a radiative layer laminated on top of a light-reflecting layer via a barrier layer. All of them are flexible sheets, cloths, and films, and any type is acceptable as long as they have a comprehensive radiative cooling function. The thickness can also be set arbitrarily. Effect of the Invention

[0015] As described above in detail, the cover 10 of the present invention is made of a radiative cooling material, so there is no need to cool the cover with water as in the past. Simply by placing it over the cylinder 1, the radiative cooling function reflects and blocks the heat rays received, and the heat trapped inside is amplified by infrared rays in the wavelength range of the "atmospheric window" and radiated into space, thereby suppressing the rise in temperature. There is no need to monitor the water supply status as in the past, and by simply placing it over the tank 1, gas supply and welding work can be safely performed even under the hot sun. The tank 1 to be covered with the cover 10 of the present invention can be applied to storage tanks for various high-pressure fluids such as acetylene, hydrogen, oxygen, propane, LPG, etc. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is an exploded view of one embodiment of the cover of the present invention. [Diagram 2] FIG. 4 is a perspective view of the cylinder covered with the cover. [Diagram 3] Schematic diagrams of some examples of the cover material. [Explanation of symbols]

[0017] 1 is the cylinder and 10 is the cover.

Claims

[Claim 1] A gas cylinder cooling cover characterized in that a cover 10 that covers a gas cylinder 1 is made of a sheet material made of a radiative cooling material.

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