JP2003194300A - Gas cylinder cooling cover and cooler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas cylinder cooling cover and a cooler capable of cooling a gas cylinder by a simple structure, and preventing an accident caused at outdoor welding work. <P>SOLUTION: A generally cylindrical bag-shaped cover 1 for covering from a shoulder portion 10s to a body portion 10t of a gas cylinder 2 is structured by a water-absorbing sheet material 10. An opening portion 15 for taking out a valve installing portion 23 of the gas cylinder 2 is formed on a top portion of the cover 1. The water-absorbing sheet material 10 is made from material polymerizing and integrating sheet shaped surface materials on an outer surface or inner surface of a single or laminated sheet shaped water absorbing material 11. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a gas cylinder cooling cover and a cooling tool.

[0002]

2. Description of the Related Art When performing welding or the like under hot weather, if a gas cylinder installed outside is exposed to direct sunlight and becomes high temperature and high pressure, it may explode, which is very dangerous. Therefore,
Normally, a gas cylinder is equipped with a safety valve to prevent high pressure inside, but if the safety valve operates and gas runs out before use (transportation) or during use, it will hinder work. There is also a risk of ignition of the gas discharged from the safety valve. Furthermore, an accident that explodes at ignition has actually occurred. For this reason, welding work outdoors under the hot sun should be avoided as much as possible, but if the work is unavoidable, measures must be taken to prevent the temperature rise of the gas cylinder.

Conventionally, a cover box or the like is known as a means for preventing the temperature rise of a gas cylinder installed outdoors.
This is to prevent temperature rise by blocking direct sunlight, so when working outdoors on a day when the outside temperature exceeds 30 ° C, the gas cylinder temperature is limited to 40 ° C for a short time. It exceeded the limit in a short time and could not be a sufficient temperature rise prevention means.

[0004]

SUMMARY OF THE INVENTION In view of the above problems of the prior art, the present invention provides a gas cylinder cooling cover capable of reliably cooling a gas cylinder with a simple structure and preventing accidents during welding work outdoors. It is intended to provide a cooling tool.

[0005]

In order to achieve the above object, the present invention comprises a substantially cylindrical bag-like cover for covering the gas cylinder from the shoulder to the body with a water absorbent sheet material, and the head of the cover. An opening was formed on the top for exposing the valve mounting portion of the gas cylinder.

The above water-absorbent sheet material is composed of a single-layer or multi-layer sheet-shaped water-absorbent material which itself has shape retention in the surface direction, or a solid portion of the single-layer or multi-layered sheet-shaped water-absorbent material. Alternatively, it may be made of a sheet-shaped water absorbent material having shape retention in the plane direction provided by interposing a water-permeable core material between the layers.

Further, the water-absorbent sheet material is formed by polymerizing the sheet-like surface material on the outer surface and / or the inner surface of the sheet-like water-absorbing material so as to be integrated, and the sheet-like surface material is provided outside the sheet-like water absorbent material. When superposed on the surface, the sheet-like surface material may have water permeability and air permeability.

Further, the water-absorbent sheet material is formed on the outer surface and / or the inner surface of a single-layer or multi-layer sheet-shaped water-absorbent material.
When the sheet-shaped surface material that imparts shape retention in the surface direction to the sheet-shaped water-absorbent material is polymerized and integrated, and when the sheet-shaped surface material is superposed on the outer surface of the sheet-shaped water-absorbent material, the sheet-shaped surface material is It may have water permeability and air permeability.

In the gas cylinder cooling cover, the cover shoulder portion is formed by increasing the thickness of the sheet-shaped water absorbent material itself, increasing the number of polymerized layers of the sheet-shaped water absorbent material, or made of a water-absorbent sheet material. It is preferable that the auxiliary water-absorbing pad, which is integrated or separate, is polymerized to increase the amount of water absorption per unit area.

Further, a gas cylinder cooling cover, a water supply cylinder for storing water for supplying water to the cooling cover shoulder, a support member for supporting the water supply cylinder above the shoulder of the gas cylinder, and an amount of water dropped from the water supply cylinder are shown. A gas cylinder cooling tool comprising a limiting means was constructed.

[0011]

1 and 2 show a state in which a cooling cover 1 according to an embodiment of the present invention is mounted on a gas cylinder 2. In the figure, the cooling cover 1 is a water-absorbent sheet material 1.
0 is sewn in the shape of an elongated cylindrical bag covering the body portion 21 and the shoulder portion 22 of the gas cylinder 2, and the valve mounting portion 23 of the gas cylinder 2 is provided at the center of the cover shoulder portion 10s and at the top of the cylinder. A circular opening 15 is provided for this purpose. It is preferable that the cover shoulder portion 10s is three-dimensionally sewn by three to four substantially fan-shaped water absorbent sheet materials 10 as in the example shown in FIG. 1 to enhance the adhesion to the gas cylinder 2.

FIG. 3 shows each embodiment of the water absorbent sheet material 10. The water-absorbent sheet material 10a shown in FIG. 3 (a) is a single layer (or a multi-layer) having a shape-retaining property in the surface direction capable of maintaining the shape of the gas cylinder cover even in the water absorbing state.
The case where the sheet-shaped water absorbing material 11a is used is shown.

Further, the water absorbent sheet material 1 shown in FIG.
0b is a sheet-shaped water absorbent material 11 by interposing a water-permeable core material 11b in the solid portion (or between layers when the sheet-shaped water absorbent material is a multilayer) of the single-layer (or multi-layered) sheet-shaped water absorbent material 11. The shape retention in the surface direction is given to the.

Further, the water-absorbent sheet materials 10c, 10d, and 10e shown in FIGS.
The sheet-like surface materials 12, 13 are superposed on the outer surface or the inner surface, or both the inner and outer surfaces, and the sheet-like water absorbing material 11 is integrally provided with a quilting process 14 to provide shape retention in the surface direction.

These water absorbing sheet materials 10c, 10d,
In 10e, the sheet-shaped water absorbing material 11 may not have shape retention in the surface direction. In addition, the sheet-like surface materials 12, 13 are superposed on the inner and outer surfaces of the sheet-like water absorbent material 11 (10
In e), either one of the surface materials 12 and 13 may not have the shape retention in the surface direction. Further, as the sheet-shaped water absorbent material 11, it is also possible to use the sheet-shaped water absorbent material 11a shown in FIG. 3 (a) or the sheet-shaped water absorbent material 11 with the core material 11b shown in FIG. 3 (b) interposed. .

Water absorbent sheet materials 10a, 10b, 10c,
Examples of the water absorbent material 11 used in 10d and 10e include non-woven fabrics made of hydrophilic rayon fibers, polygonal fibers, water absorbent fibers such as pulp and cotton, and fibrous polymer absorbers alone or in combination. It is possible to use a sheet-shaped polymer absorbent body covered with a water-permeable cloth and enclosed in a small block. Further, it is preferable that the water absorption performance is less likely to deteriorate with time, can be repeatedly used, and that air can flow through the sheet in a water absorption state. Water absorbing material 1
The water-absorbent sheet material 10a composed of only one can be formed into the shape of the gas cylinder 2 using the above-mentioned non-woven fabric, for example, to form the cooling cover 1.

The surface materials 12, 13 used for the water-absorbent sheet materials 10c, 10d, 10e are flexible sheet materials (cloths) capable of imparting shape retention and dimensional stability in the surface direction to the water-absorbent material 11. Further, the surface material 12 on the outer surface side is made of a flexible sheet material having water permeability and air permeability in addition to shape retention. For example, synthetic fibers such as polypropylene and polyester, natural fibers such as cotton and hemp, non-combustible fibers such as carbon and rock wool, and non-woven fabrics made by blending them,
Woven fabric, woven fabric and the like can be preferably used.

Further, the surface material 12 on the outer surface side is capable of exerting water permeability from the inside (water absorbing material 11) to the outer surface, and is apt to be dried on the surface, that is, it has moisture absorbing / releasing properties. An excellent material is preferable, and a non-combustible or flame-retardant material and a material which is not easily deteriorated by direct sunlight are preferable in order to prevent ignition of sparks of welding. Furthermore, a material that reflects sunlight and does not easily heat up, and a white material in terms of color are suitable.

When the cooling cover 1 constructed as described above is used, the gas cover 2 is covered with the cooling cover 1 and the valve mounting portion 23 is projected from the opening 15 to open the gas cylinder 2.
The cooling cover 1 is brought into close contact with the body portion 21 to the shoulder portion 22. Since the direct sunlight is blocked only by attaching the cooling cover 1, there is a certain degree of temperature rising waterproof effect, but the cooling cover 1 can be timed when the outside air temperature rises.
The water-absorbent sheet material 10 (water-absorbent material 11) is made to absorb water sufficiently.

Then, the water retained in the water absorbing material 11 comes into contact with the outside air directly or through the air-permeable surface material 12, and gradually evaporates to bring the cooling cover 1 into contact with the cooling cover 1. The heat of the surface of a certain gas cylinder 2 is taken and the gas cylinder 2 is cooled.

Next, the temperature rise of the cooling cover 1 of the above embodiment
In order to verify the prevention effect, a gas cylinder under direct sunlight
An experiment was conducted to examine the temperature change of the (acetylene container).
The cooling cover used in the experiment was made of 70% cotton and
Woven cloth composed of 30% polyester mixed yarn
Based on rayon with a basis weight of 200 g / m ^Two
The non-woven fabric is used, and it is integrated by quilting processing 14.
The water absorbent sheet material (10e) was acetylene gas 7kg
It is sewn into a cylindrical bag according to the container, and at the top of the head.
An opening 15 having a diameter of 10 cm is provided.

For the gas cylinder with the cooling cover and the gas cylinder without the cooling cover, the surface temperature of the shoulder side, the upper part of the body and the lower part of the body on the sunlit side (direct sunlight) and the shaded side are every 30 minutes. It was measured with a laser thermometer. The measurement was carried out in a state where the gas cylinder was filled with acetylene gas according to the actual use environment. The measurement results are shown in FIGS. 4 and 5.

The gas cylinder not covered with the cooling cover was at 10:30 am (2 hours 30 minutes from the measurement disclosure).
Since the temperature of each part on the sunlit side exceeded 40 ° C, it was judged as dangerous and the subsequent measurement was stopped.

On the other hand, the gas cylinder covered with the cooling cover was 35.5 on the shoulder side even at the sunward side at 10:30 am.
The temperature was the highest, and the effect of preventing the temperature rise was recognized by blocking the direct sunlight by simply attaching the cooling cover. However, since there was a tendency for the temperature to rise as the outside air temperature increased, water was poured into the cooling cover at this point, and thereafter, the cooling cover was measured approximately every 2 hours after 12:00, 14:00, and 15:30. Since it was dry, water was injected. The arrows in the graphs of FIGS. 4 and 5 indicate the water injection time.

As a result, the highest temperature was 35.5 ° C. at 10:30 (before water injection) even in the shoulder of the hottest gas cylinder, and after water injection, the temperature exceeded 35 ° C. even around 2:00 pm when the outside air temperature rose most. There was nothing. Therefore, it can be said that the temperature of the gas cylinder can be kept below the use limit of 40 ° C. even in the outdoors in the midsummer, if the cooling cover is adhered and the water injection time is protected so that the water content of the cooling cover is not lost.

Next, FIG. 6 shows another embodiment of the cooling cover, in which the cooling cover 41 has a shoulder portion 1
Two (or more) water absorbing materials 11 are used for the water absorbing sheet material 10 at 0 s so that the amount of water absorption per unit area is larger than that of the body portion 10t.

In consideration of the fact that moisture moves downward due to gravity and the shoulder 10s dries faster than the body 10t in relation to the irradiation angle of sunlight, the shoulder 10s dries first. For the purpose of suppressing that, further, in a more positive sense, it is closer to flat than the vertical body 10t,
The purpose is to make the shoulder portion 10s, which easily stores water, function as a water absorption source for the body portion 10t.

Instead of using two or more water-absorbing materials 11 on the shoulder portion 10s, the water-absorbing material 11 having a thicker thickness than the body portion 10t side is used.
May be used. Further, the water absorbing power of the material itself may be enhanced by, for example, holding a polymer absorber between the layers of the water absorbing material 11.

FIG. 7 shows still another embodiment of the cooling cover, which is a separate body from the shoulder portion 10s of the cooling cover 1 (41) of the embodiment shown in FIG. 1 (or FIG. 6). By mounting the auxiliary water absorption pad 3 of No. 3, the amount of water absorption per unit area of the shoulder portion 10s is increased.

The auxiliary water-absorbing pad 3 has basically the same structure as the cooling cover body 1, and the sheet-like surface materials 12, 13 are superposed on the outer surface or the inner surface of the water-absorbing material 11, or both the inner and outer surfaces, and the quilting process 14 is performed. An opening 35 is provided in the center of the integrated circular water-absorbent sheet material 10 to form an annular shape. Then, as shown in the example of the drawing, by making a part of the circumferential direction discontinuous and providing the opening / closing means 32 such as a hook-and-loop fastener or a fastener, the gas cylinder 2 can attach / detach the auxiliary water absorption pad 3 even in the state where the gas pipe is connected.

Further, like the cooling cover 61 shown in FIG.
Body part 10 for easy attachment / detachment to and from the elongated gas cylinder 2.
The slit 62 may be provided from t to the shoulder portion 10s, and the opening / closing means 63 for the slit 62 may be provided. As a means for opening and closing the slit 62, fasteners, hook-and-loop fasteners, strings, belts, snaps and the like can be used.
In particular, since the hook-and-loop fastener is easily attached and detached and can be attached and detached at any position, it is advantageous in that the cooling cover 61 is easily attached to the gas cylinder 2.

Next, FIGS. 9A and 9B show a water supply means 71 used together with the cooling cover 1. As is clear from the above-mentioned experiment, the remarkable cooling / temperature rise prevention effect can be obtained by pouring water into the cooling cover 1 for about 2 hours. Therefore, a water supply cylinder 72 that stores water for water supply above the shoulder of the gas cylinder 2 equipped with the cooling cover 1, a support member 73 of the water supply cylinder 72, and a drip amount restriction that restricts the amount of water dripped from the water supply cylinder 72. Water supply means 71 comprising means 74,
71 'is provided.

As the water supply cylinder 72, a commercially available bottle of drinking water or the like having a capacity of 2 liters or 1.5 liters can be used, and the support member 73 has a holding portion 75 for holding the plastic bottle downward and a fixing portion 76. Is formed on a pillar 77 standing upright above. The holding portion 75 can be configured as a frame 75a for holding a PET bottle as shown in FIG. 9A, or can be configured as a holder 75b for hanging a PET bottle and a hook 75c as shown in FIG. 9B. . Further, as the fixing portion 76, a method of fixing with a nut 76a screwed to the cap screw portion 24 of the gas cylinder 2 as shown in FIG. 9A, or a clamp 76b (screw clamp or the like) as shown in FIG. 9B. It can be fixed.
When each part of the support member 73 is made of a member having a high heat conductivity such as metal, it is preferable to interpose a heat insulating material between the fixed part 76 and the gas cylinder 2. As the appropriate lowering amount limiting means 74, a point application tool capable of adjusting the appropriate lowering amount may be used, or only the pores of a predetermined size may be formed in the lid of the PET bottle.

10 (a) and 10 (b) show another embodiment of the water supply means. In the figure, water absorbing means 8
1, the support member 83 of the water supply cylinder 82 is formed by connecting upper rings 83a and 83b having different diameters at three columns 83c. The upper ring 83a can insert the water bottle 82 (plastic bottle), but is larger than the diameter of the gas cylinder 2,
On the other hand, the lower ring 83b is configured to have a diameter slightly larger than that of the standard gas cylinder 2, has a substantially conical shape as a whole, and is adapted to accommodate gas cylinders 2 having different diameters.

Then, as shown in FIG. 10 (a), the support member 83 is fitted onto the gas cylinder 2 fitted with the cooling cover 1 from the side of the lower ring 83b, and the middle portions of the three columns 83c are located near the shoulder portion of the gas cylinder 2. Fixed by abutting on
Further, the upper ring 83 located above the shoulder of the gas cylinder 2
The water supply cylinder 82 is inserted from a and is supported by abutting the tip of the water supply cylinder 82 against the shoulder of the gas cylinder 2 over the cooling cover 1.

Instead of a normal lid, the tip of the water supply cylinder 82 has a hollow conical lid body and two drain holes 84a at the upper and lower portions.
The dropping amount limiting means 84 having a hole 84b is fixed,
The water in the water supply cylinder 82 oozes onto the cooling cover 1. It should be noted that the water drain hole may be formed at a position where it contacts the cooling cover 1, or a water absorbent material such as gauze or sponge may be brought into contact with the water drain holes 84a and 84b so that the water in the water supply cylinder 82 seeps out. good.

Water supply means 71, 71 ', 81 as described above
By using the cooling cover 1 together with the cooling cover 1, the drying time of the cooling cover 1 can be delayed by about 2 hours, and by further using the cooling cover 41 and the auxiliary water absorbing pad 3 having a large amount of water absorption of the shoulder portion described above, The frequency of can be greatly reduced. For example, since it suffices to inject and supply water at the start of work in the morning and afternoon, the user is not distracted at the time of injecting water into the cooling cover 1,
You can concentrate on work such as welding.

[0038]

As described above in detail, the gas cylinder cooling cover of the present invention constitutes a substantially cylindrical bag-shaped cover for covering the gas cylinder from the shoulder to the body with the water absorbent sheet material. Since the opening for opening the valve mounting part of the gas cylinder is formed on the top of the head, the surface of the gas cylinder can be surely cooled by the evaporation heat of the water by injecting water while adhering to the gas cylinder to absorb water, and under the hot sun. Welding work can be done safely.

The cover shoulder may be made thicker by increasing the thickness of the sheet-shaped water-absorbing material itself, by increasing the number of polymerized layers of the sheet-shaped water-absorbing material, or by an integral or separate body made of the water-absorbing sheet material. By superimposing the auxiliary water-absorbing pad to increase the amount of water absorption per unit area, the drying of the shoulder part due to the downward movement of water is suppressed, and the drying time of the entire cover is made uniform, and there is no waste. Water can be injected and the frequency of water injection can be reduced.

Further, the gas cylinder cooling cover, a water supply cylinder for storing water for supplying water to the cooling cover shoulder, and a support member for supporting the water supply cylinder above the shoulder of the gas cylinder.
By using a gas cylinder cooling tool that consists of means for limiting the amount of water dropped from the water supply cylinder, the frequency of water injection can be further reduced, and it is possible to concentrate on the work using the gas cylinder such as welding, and to provide a safer cooling means. Can be configured.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where a gas cylinder cooling cover of an embodiment of the present invention is attached to a gas cylinder.

FIG. 2 is a side view showing a state in which the gas cylinder cooling cover of the embodiment of the present invention is attached to the gas cylinder, which is partially cut away.

3A and 3B are views of FIG. 2A in each embodiment.
It is a partially expanded sectional view.

FIG. 4 is a graph showing a temperature change in a sunlit portion of a gas cylinder with and without a cooling cover.

FIG. 5 is a graph showing a temperature change in a shaded portion of a gas cylinder with and without a cooling cover.

FIG. 6 is a side view of a main part partially cut away showing another embodiment of the gas cylinder cooling cover of the present invention.

FIG. 7 is a side view of a main part of a gas cylinder cooling cover according to another embodiment of the present invention, which is partially cut away and shows another embodiment.

FIG. 8 is a perspective view showing another embodiment of the gas cylinder cooling cover of the present invention.

9 (a) and 9 (b) are side views showing an embodiment of water supply means used together with the gas cylinder cooling cover of the present invention.

FIG. 10 (a) is a side view showing another embodiment of the water supply means used together with the gas cylinder cooling cover of the present invention, and FIG. 10 (b) is a perspective view.

[Explanation of symbols]

1, 41, 61 Cooling cover 2 Gas cylinder 3 Auxiliary water absorption pad 10, 10a, 10b, 10c, 10d, 10e Water absorbent sheet material 11, 11a Water absorbent material 11b Core material 12, 13 Surface material 15, 35 Opening portion 71, 71 ' , 81 Water supply means 72, 82 Water supply cylinders 73, 83 Support members 74, 84 Suitable lowering amount limiting means

Claims (6)

[Claims] 1. A substantially cylindrical bag-like cover for covering the gas cylinder from the shoulder to the body is formed of a water-absorbent sheet material, and an opening for letting out a valve mounting portion of the gas cylinder is provided at the top of the cover. A gas cylinder cooling cover characterized by being formed. 2. The water-absorbent sheet material is composed of a single-layer or multi-layer sheet-shaped water-absorbing material which itself has a shape-retaining property in the surface direction, or a solid material of the single-layer or multi-layer sheet-shaped water-absorbing material. 2. The gas cylinder cooling cover according to claim 1, wherein the gas cylinder cooling cover is made of a sheet-shaped water absorbent material having shape retention in a surface direction by interposing a water-permeable core material between the parts or layers. 3. A water-absorbent sheet material is formed by polymerizing the sheet-shaped surface material on the outer surface and / or the inner surface of the sheet-shaped water-absorbent material to form an integral body, and the sheet-shaped surface material on the outer surface of the sheet-shaped water absorbent material. The gas cylinder cooling cover according to claim 2, wherein the sheet-like surface material has water permeability and air permeability when stacked. 4. A sheet-shaped surface material for imparting shape retention in the surface direction to the outer surface and / or inner surface of a single-layer or multi-layer sheet-shaped water-absorbent material. The gas cylinder cooling cover according to claim 1, wherein the sheet-like surface material is water-permeable and air-permeable when the sheet-like surface material is superposed on the outer surface of the sheet-like water absorbent material. 5. The cover shoulder is formed by increasing the thickness of the sheet-shaped water-absorbing material itself, increasing the number of polymerized layers of the sheet-shaped water-absorbing material, or by integrally or separately forming a water-absorbing sheet material. The gas cylinder cooling cover according to claim 1, wherein the water absorption pad is polymerized to increase the amount of water absorption per unit area. 6. A gas cylinder cooling cover according to claim 1, 2, 3, 4 or 5, a water supply cylinder for storing water for supplying water to the cooling cover shoulder, and the water supply cylinder above the shoulder of the gas cylinder. A gas cylinder cooling tool comprising a supporting member for supporting and a means for limiting the amount of water dropped from a water supply cylinder.