JP2015004391A - Disaster preventing cover for gas cylinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disaster preventing cover for a gas cylinder capable of rapidly coping with leakage of poison gas from the gas cylinder.SOLUTION: A disaster preventing cover for a gas cylinder is a bag body made of synthetic resin, and includes a sealed top part (2), a cylindrical body part (3) having a height higher than that of the gas cylinder, and a bottom part (4) having an opening part (42) larger than a diameter of a trunk part of the gas cylinder, and a static electricity removing structure (35) is provided on at least one surface of the body part (3). The body part (3) of the disaster preventing cover for the gas cylinder may have a diameter enlargement part (40) of which diameter is enlarged toward the opening part (42). The body part (3) of the disaster preventing cover for the gas cylinder may have a belt part (31) for fastening and fixing the body part (3) to the trunk part of the gas cylinder.

Description

  The present invention relates to a disaster prevention cover for a gas cylinder.

  At present, as the protective equipment to be carried when moving toxic gases such as chlorine, etc., attached “General High Pressure Gas Safety Regulations (Ministry of International Trade and Industry Ordinance No. 53 of 1966)” “Standard Example of General High Pressure Gas Safety Regulations” Describes "74. Protective equipment and materials carried when toxic gas moves" (for example, see Non-Patent Document 1).

  According to this standard, when toxic gas leaks from a gas cylinder, lay the gas cylinder on its side, cover it with cloth or polyethylene sheet, and spray a detoxifying agent (for example, slaked lime) around the sheet. First aid is to be done.

  However, for example, in the case of liquefied toxic gas, if the gas cylinder is laid down at the time of leakage, liquid gas may be ejected and damage may be increased.

  Further, if an attempt is made to deal with a cloth or a polyethylene sheet in a state where the gas cylinder is set up, workability is poor and time is required, so that it cannot be dealt with quickly.

  Furthermore, if the work in the outdoors is taken into consideration, the situation where the polyethylene sheet is turned up or blown off by the wind must be taken into consideration.

  On the other hand, a gas cylinder cover for protecting the gas cylinder from dirt and the like is also commercially available, but normally an opening is formed at the top for operating the main plug, and a material having a high gas barrier property is not used. Therefore, it cannot be used as a countermeasure against poison gas leakage.

“High Pressure Gas Safety Law Related Illustration Standard Collection (6th revised edition)”, High Pressure Gas Safety Association, published on March 22, 2013, pages 169-170

  Then, an object of this invention is to provide the disaster prevention cover for gas cylinders which can cope with the leakage of poisonous gas from a gas cylinder rapidly.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following aspects or application examples.

One aspect of the disaster cover for a gas cylinder according to the present invention is as follows:
A synthetic resin bag,
A sealed top (2);
A cylindrical main body (3) higher than the height of the gas cylinder;
A bottom (4) having an opening (42) wider than the diameter of the body of the gas cylinder;
Have
It has a static electricity removing structure (35) on at least one surface of the main body (3).

In one aspect of the disaster cover for a gas cylinder according to the present invention,
The main body (3) may have a diameter-expanded portion (40) that increases in diameter toward the opening (42).

In one aspect of the disaster cover for a gas cylinder according to the present invention,
The main body part (3) may have a belt part (31) that fastens and fixes the main body part (3) to the body part of the gas cylinder.

  According to the disaster cover for a gas cylinder according to the present invention, since the bag body is higher than the height of the gas cylinder, if the gas cylinder is inserted from the top of the gas cylinder by widening the opening of the disaster cover, the entire gas cylinder can be easily Can be covered completely. In addition, according to this disaster prevention cover, the work can be performed with the gas cylinder standing, and the labor and time for laying the gas cylinder down can be saved, so that the disaster prevention cover can be quickly operated. Moreover, according to this disaster prevention cover, by having a static electricity removing structure, it is possible to prevent ignition due to static electricity even when flammable gas leaks.

It is a front view of the disaster prevention cover for gas cylinders concerning one embodiment. It is a schematic diagram which shows the use condition of the disaster prevention cover for gas cylinders concerning one embodiment. It is a schematic diagram which shows the use condition of the disaster prevention cover for gas cylinders concerning one embodiment. It is a partially expanded sectional view which shows the grounding state of the disaster prevention cover for gas cylinders in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  The disaster cover for a gas cylinder according to one embodiment of the present invention is a synthetic resin bag body, a sealed top part 2, a cylindrical main body part 3 higher than the height of the gas cylinder, And a bottom part 4 having an opening 42 wider than the diameter of the body part of the gas cylinder, and at least one surface of the main body part 3 has a static electricity removing structure 35.

  FIG. 1 is a front view of a disaster prevention cover 1 for a gas cylinder according to an embodiment.

  When the gas leaks from the gas cylinder, the disaster prevention cover 1 is “74. Toxicity” in the “General High Pressure Gas Safety Regulations Example Criteria” attached to the “General High Pressure Gas Safety Regulations (Ministry of International Trade and Industry No. 53 of 1966)”. It can work more easily than the polyethylene sheet etc. specified in `` Protective equipment and materials carried when moving gas '', especially the special effect that it can work quickly with the gas cylinder standing It is what has. In the description of the present embodiment, it is assumed that the use form of the disaster prevention cover 1 is assumed, and the top side is the top and the bottom side is the bottom.

The gas cylinder disaster prevention cover 1 is a synthetic resin bag body having a cylindrical main body 3 in which an opening 42 of a bottom 3 is opened and a top 2 is sealed. The synthetic resin bag is manufactured by, for example, welding two sheets having the same contour of the disaster prevention cover 1 as shown in FIG. 1 at the peripheral edge portion 36 except for the portion corresponding to the opening 42. be able to. As a welding method, a known method can be appropriately selected according to the type of the synthetic resin.

  Since the disaster prevention cover 1 is manufactured by superimposing two sheets made of synthetic resin, in the unused state, that is, in the state where the opening 42 is not opened, as shown in FIG. State. Therefore, if the disaster prevention cover 1 is folded and made compact, it can be easily loaded on a vehicle carrying the gas cylinder.

  The cylindrical main body 3 has a total length H that is higher than the height of the gas cylinder to which the disaster prevention cover 1 is applied. The main body portion 3 includes a head portion 10, a shoulder portion 20, and a trunk portion 30. In FIG. 1, two sheets are overlapped before and after the figure, and thus the thickness of the disaster prevention cover 1 is the thickness of two sheets.

  The head portion 10 has a first width W1 that is narrower than the second width W2 of the body portion 30. The head unit 10 can accommodate a mouth part to which a gas cylinder main stopper is attached or a disaster prevention cap placed on the mouth part.

  The shoulder portion 20 gradually widens from the lower end of the head portion toward the upper end of the trunk portion 30 to connect the head portion 10 and the trunk portion 30. The shoulder part 20 can contact the shoulder part of a gas cylinder and restrict | limit that the disaster prevention cover 1 moves below with respect to a gas cylinder.

  The trunk portion 30 can have an enlarged diameter portion 40 having an upper end connected to the shoulder portion 20 and a lower end connected to the bottom portion 4. The trunk portion 30 is formed with a second width W2 from the lower end of the shoulder portion 20 to the upper end of the enlarged diameter portion 40, and has a diameter larger than the diameter of the barrel portion of the gas cylinder by being expanded in a cylindrical shape.

  The enlarged diameter portion 40 is formed by expanding from the second width W2 to the third width W3 of the opening portion 42. When the barrel portion 30 is expanded in a cylindrical shape, for example, a truncated cone from the barrel portion 30 toward the bottom portion 4 is formed. The diameter is expanded. The enlarged diameter portion 40 can have one or more slits 44 extending in the height direction and being cut. Since the enlarged diameter part 40 has the slit 44, the disaster prevention cover 1 can be earth | grounded according to the shape of the floor surface of the place where the gas cylinder was put. The slit 44 may not be formed in advance if it is assumed to be used in a place where the floor is flat.

  The main body 3 can have a first belt portion 31 that fastens and fixes the main body 3 to the body of the gas cylinder. The first belt portion 31 has one end fixed to the body portion 30 and the other end having a free end that can be joined to a first joint portion 33 provided on the body portion 30. The first belt portion 31 and the first joint portion 33 are so-called hook-and-loop fasteners, one of which is raised on the hook and the other is raised in a loop shape, and is joined by overlapping. Further, the main body 3 can have a second belt portion 32 and a second joint portion 34 below the first belt portion 31. Moreover, the 1st, 2nd belt parts 31 and 1 and the 2nd junction part 33 can use not only a hook-and-loop fastener but another well-known fastener.

  The main body 3 has a static electricity removing structure 35 on at least one surface. In the static electricity removing structure 35, the conductive portion 37 is formed in a mesh shape on the entire inner surface of the main body portion 3, for example, and can be grounded at the bottom portion 4 to remove static electricity from the main body portion 3. The conductive portion 37 can be continuously formed on the surface of the main body 3 from at least the top 2 to the bottom 4. The conductive portion 37 can be manufactured, for example, by printing a conductive paint in a mesh pattern on the entire surface of at least one of the synthetic resin sheets constituting the main body portion 3.

Therefore, as a manufacturing method of the disaster prevention cover 1, two sheets on which the conductive paint is printed are cut into a shape as shown in FIG. 1, and the two sheets on which the conductive paint is printed are cut out from the two sheets. It is obtained by welding the peripheral edge portion 36 excluding the bottom portion 4 in a state where the two are overlapped. As the sheet on which the conductive paint is printed, for example, a commercially available “Antistatic R” manufactured by Okamoto can be employed. The thickness of one sheet can be 0.1 mm to 1 mm, preferably 0.1 mm to 0.3 mm. As the material of the sheet, a synthetic resin sheet having excellent flexibility and relatively high gas barrier properties can be used. For example, polyvinyl chloride, unstretched polypropylene, polyethylene terephthalate, or the like can be used. .

  According to this disaster prevention cover 1, by having the static electricity removing structure 35, the static electricity generated inside can be grounded to the ground surface G by the static electricity removing structure 35, and even if flammable gas leaks from the gas cylinder, it is ignited by static electricity. Can be prevented.

  The bottom 4 is provided at the lower end of the main body 3 and has an opening 42. The bottom 4 has a third width W3. The third width W3 is wider than the second width W2 of the body portion 30, and when the disaster prevention cover is expanded into a cylindrical bag by expanding the opening 42, the diameter D1 of the body portion of the gas cylinder (FIG. 2). The width is a larger diameter than that of (see).

Drawing 2 is a mimetic diagram showing the use state of disaster prevention cover 1 for gas cylinders concerning one embodiment. Drawing 3 is a mimetic diagram showing the use condition of disaster prevention cover 1 for gas cylinders concerning one embodiment. 4 is a partially enlarged cross-sectional view showing a grounding state of the disaster prevention cover 1 for the gas cylinder in FIG. 2 and 3, the static electricity removing structure 35 is omitted in order to explain the state of the gas cylinder 6. 2 and 3, the gas cylinder 6 is described by taking the most common gas cylinder 6 of 7 m ³ (7000L, 47L type) as an example. It is desirable to prepare the disaster prevention cover 1 according to the size of the gas cylinder to be transferred.

  As shown in FIG. 2, the disaster prevention cover 1 accommodates a gas cylinder 6 inside. First, the worker opens the opening 42 of the disaster prevention cover 1 to form a bag.

  Next, the opening 42 of the disaster prevention cover 1 is inserted from the side of the disaster cap 60 of the gas cylinder 6 that is standing upright, and is pushed down until the shoulder portion 20 of the disaster prevention cover 1 contacts the shoulder portion 62 of the gas cylinder 6. At this time, the bottom portion 4 of the disaster prevention cover 1 is in contact with the ground surface G so that the enlarged diameter portion 40 spreads outward, and the end portion of the static electricity removing structure 35 (not shown here) formed on the inner surface of the main body portion 3 is used. Can be grounded.

  The operator can spray slaked lime, for example, as the detoxifying agent 7 around the bottom 4.

  The enlarged diameter portion 40 of the disaster prevention cover 1 is in contact with the ground surface G with its outer surface widened so that the entire circumference can contact the ground surface G without any gaps, and the detoxifying agent 7 Since it can be spread from the outside while being put on the end of the enlarged diameter portion 40, it is easy to spread.

  The overall height H of the disaster prevention cover 1 is formed higher than the overall height H1 of the gas cylinder 6. This is because the bottom 4 is surely brought into contact with the ground surface G.

In general, the gas cylinder 6 is manufactured so that the height H2 from the bottom 64 to the shoulder 62 is substantially the same. Therefore, if the height H3 from the bottom part 4 to the shoulder part 20 of the disaster prevention cover 1 is manufactured in accordance with the height H4, the shoulder part 20 of the disaster prevention cover 1 is attached when the gas cylinder 6 is covered with the disaster prevention cover 1. By contacting the shoulder 62 of the gas cylinder 6, the disaster prevention cover 1 can reliably cover the entire gas cylinder 6. In this case, it is desirable to set the height H <b> 2 with a predetermined amount, for example, a margin of about 50 mm to 100 mm so that the disaster prevention cover 1 is not installed with an insufficient height. In addition, since the height of the disaster prevention cap 60 of the gas cylinder 6 is various, even if the height H4 of the head part 10 accommodates the highest thing of the disaster prevention cap 60 currently distribute | circulating on the market, the top part 2 is the disaster prevention cap 60. It is preferable to secure a height that does not contact the top of the.

  As shown in FIG. 3, the first belt portion 31 can be joined to the first joining portion 33, and the main body portion 3 of the disaster prevention cover 1 can be fastened and fixed to the body portion 63 of the gas cylinder 6. The first belt portion 31 can be quickly operated even in an emergency by saying that the first joint portion 33 is formed of a hook-and-loop fastener. By doing in this way, it can restrict | limit that the disaster prevention cover 1 moves with respect to the gas cylinder 6. FIG. For example, when used outdoors, it is possible to prevent the disaster prevention cover 1 from being lifted or blown by the wind. Further, by joining the first belt portion 31 to the first joint portion 33, it is possible to restrict the gas leaked from the disaster prevention cap 60 side from moving to the bottom portion 4 side. The second belt portion 32 and the second joint portion 34 have the same effect.

  4 is an enlarged cross-sectional view of a circle IV in FIG. The lower end of the enlarged diameter portion 40 of the disaster prevention cover is in contact with the ground surface G, and the conductive portion 37 formed inside the enlarged diameter portion 40 is grounded to ground the static electricity in the main body portion 2. The detoxifying agent 7 is sprayed on the outside of the enlarged diameter portion 40. There is substantially no gap between the lower end of the enlarged diameter portion 40, that is, the bottom portion 4 and the ground surface G, and leakage of gas in the disaster prevention cover to the outside can be prevented.

  The present invention is not limited to the above-described embodiment, but includes variously modified forms within the technical scope without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Disaster prevention cover 2 Top part 3 Main-body part 4 Bottom part 6 Gas cylinder 7 Detoxifying agent 10 Head part 20 Shoulder part 30 Body part 31 1st belt part 32 2nd belt part 33 1st junction part 34 2nd junction part 35 Static electricity removal Structure 36 Peripheral part 37 Conductive part 40 Expanded part 42 Opening part 44 Slit 60 Disaster prevention cap 62 Shoulder part 63 Body part 64 Bottom part H, H1, H2, H3, H4 Height W1, W2, W3 Width D1 Diameter

Claims (3)

A synthetic resin bag,
A sealed top (2);
A cylindrical main body (3) higher than the height of the gas cylinder;
A bottom (4) having an opening (42) wider than the diameter of the body of the gas cylinder;
Have
A disaster prevention cover for a gas cylinder, comprising a static electricity removing structure (35) on at least one surface of the main body (3). In claim 1,
The said main-body part (3) has an enlarged diameter part (40) which diameter-expands toward an opening part (42), The disaster prevention cover for gas cylinders characterized by the above-mentioned. In claim 1 or 2,
The said main-body part (3) has the belt part (31) which clamp | tightens and fixes the said main-body part (3) with respect to the trunk | drum of the said gas cylinder, The disaster cover for gas cylinders characterized by the above-mentioned.

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