KR200440159Y1 - A Refillable butane gas cask - Google Patents

Abstract

By maintaining the preassembled state between the body and the upper and lower caps before welding, to solve the problem of welding separation due to the separation of the cap and the incomplete temporarily assembled state that can occur during the manufacturing process of the butane gas cylinder, the body (200) In which a valve 100 capable of releasing and refilling gas is coupled to the top; At the upper and lower ends of the cylindrical body 200, annular bead portions 202 and 204 are formed to protrude outward so as to have an outer diameter corresponding to the container size of the butane gas cylinder, and coupling grooves 203 and 205 are formed inside the bead portions 202 and 204. Is formed, the flanges 214 and 224 for welding with the body 200 is formed on the outer side of the upper and lower caps 210 and 220, and the flanges 214 and 224 are pressed into the coupling grooves 203 and 205, respectively. The protrusions 215 and 225 are formed, and the coupling protrusions 215 and 225 of the upper and lower caps 210 and 220 are transported in the state of being firmly fitted into the coupling grooves 203 and 205 of the inner and upper ends of the body 200, respectively. Since the upper and lower ends of the flange portion 214 and 224 of the 210 and 220 and the upper and lower ends of the body 200 are welded, the capping phenomenon and incompleteness of the cap are maintained since the joint is maintained in spite of the impact received during transportation and handling before welding. Product defects caused by temporary assembly It can be fully resolved.

Refill, Butane Gas, Container, Fillet Welding, Internal Pressure, Detachable, Bracket, Replacement

Description

Rechargeable butane gas container {A Refillable butane gas cask}

1 is an exploded perspective view of a rechargeable butane gas cylinder according to a first embodiment of the present invention;

Figure 2 is an exploded perspective view showing a coupling method for assembling the direction of the mounting groove of the bracket and the extension pipe portion of the valve body in the rechargeable butane gas cylinder according to the first embodiment of the present invention,

3 is a perspective view of a rechargeable butane gas cylinder according to the present invention;

Figure 4 is an enlarged cross-sectional view and main portion of the rechargeable butane gas cylinder according to the present invention,

5 is a standard view of a rechargeable butane gas container of a gas safety construction,

6 is an enlarged cross-sectional view of the rechargeable butane gas cylinder according to a second embodiment of the present invention,

7 is a cross-sectional view of a conventional expandable gas container.

* Explanation of symbols for main parts of the drawings

100: valve 110: valve body

111a: flange portion 111b: scalloped protrusion

111d: fan-shaped protrusion 114: extension tube

120: spring 130: valve tube

140: valve seat 150: release prevention

160: bracket 162: seating groove

164: through hole 165a, 165b: fan groove

200: container body 202,204: bead part

203,205: coupling groove 206,208: edge portion

210: upper cap 212: female thread hole

214,214: flange 215,225: engaging projection

220: lower cap b: weld

The present invention relates to a rechargeable butane gas cylinder, and in detail, the coupling groove and the coupling protrusion on the body, the upper and the lower cap to maintain the pre-assembled state between the body, the upper and the lower cap before welding between the body and the upper and lower caps. Forming and pre-assembling the body, upper and lower caps by the press to solve the problem of welding defects due to the separation of the cap and the incomplete temporary assembly state in spite of the external shock of the cap.

Examples of the related art related to the present invention include a rechargeable butane gas cylinder of improved structural strength of Utility Model Registration No. 290732 and a rechargeable butane gas cylinder of Publication No. 3534458. On the other hand, "Welding vessel can valves are to be attached in a replaceable structure," as defined in Article 12-20-7 of the Welding Vessel Standard Act of Korea Gas Safety Corporation, Act No. 12-20-7. Article 12-20-10 (2) of the same Act states that "the date and time of attachment must be stamped on the can valve attached to the welding vessel." The above-mentioned utility model registration No. 290732 cannot comply with these regulations. There was a problem.

The utility model registration No. 354458 is to solve this problem, and the present invention further improves and supplements the valve so that the valve can be easily separated and replaced, and the gas container is made of a simple cylindrical shape without undergoing a complicated manufacturing process such as expansion. The upper and lower caps are welded to the upper and lower ends of the body to make it easier to manufacture.

Meanwhile, the gas container structure of Patent No. 304352 shown in FIG. 7 has a hollow container body 40 and upper and lower end caps respectively coupled to upper and lower ends of the container body 40 to form a closed space. And a nozzle unit 70 coupled to the upper end cap 50 to control the discharge of the gas. The container body 40 has upper and lower end caps 50 and 60, respectively. The upper and lower ends are joined to have a structure in which diameters 41 and 42 are enlarged, respectively, and the edges of the upper and lower end caps 50 and 60 are supported by the upper and lower ends of the container body 40, respectively. The horizontal portion or the flat portion (51, 61) and the vertical portion or the contact portion (52, 62) is formed is made of a structure that is joined by butt welding.

In the container structure of Patent No. 304352 shown in FIG. 7, the diameter of the container body is formed at the upper and lower ends of the container body, so that the structural strength of the container body is improved. The process of forming the enlarged diameter portion was added to the lower end, so that the manufacturing cost was increased due to the addition of manufacturing labor as well as the facilities for forming the enlarged diameter portion had to be separately provided.

In addition, in the conventional container structure shown in FIG. 7, after temporarily assembling the upper and lower end caps on the upper and lower ends of the cylindrical container body, the contraction due to the impact or temperature change that is received or conveyed by the welding process or Due to the swelling phenomenon, the upper and lower end caps are frequently separated from the container body, so the container body from which the cap was removed had to be returned to the temporary assembly process. In addition, it was necessary to check the pre-assembly of the lower end cap one by one, so that the working time was delayed and when welding without this checking operation, the welding defect occurred or the deviation of each container standard was greatly occurred. there was.

The present invention was devised to solve the above-mentioned conventional problems, and the object of the present invention is to maintain the pre-assembled state between the body and the upper and lower caps before welding the rechargeable butane gas cylinder as mentioned above. The present invention provides a rechargeable butane gas cylinder having an improved structure capable of solving a problem of welding defects due to separation of caps and incomplete provisional assembly, which may occur during manufacturing of the rechargeable butane gas cylinder.

In order to achieve the above object, the present invention welds an upper cap to which a valve capable of discharging and recharging gas is coupled to an upper portion of a cylindrical body, and a lower cap is welded to a lower portion of the body, the upper and lower ends of the body. An annular bead portion protruding outward is formed so as to have an outer diameter of the trunk core corresponding to the container specification of the butane gas cylinder, respectively, and an inner side of the bead portion is formed with a coupling groove, A flange portion for welding is formed, each of which provides a rechargeable butane gas cylinder having coupling protrusions pressed into the coupling grooves.

Hereinafter, preferred embodiments that do not limit the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a rechargeable butane gas cylinder according to a first embodiment of the present invention, Figure 2 is assembled in accordance with the direction of the mounting groove of the extension pipe portion of the valve body and the bracket in the rechargeable butane gas cylinder according to the present invention Figure 3 is an exploded perspective view showing a coupling method for, Figure 3 is a combined perspective view of the rechargeable butane gas cylinder according to the present invention, Figure 4 is an enlarged cross-sectional view and main portion of the rechargeable butane gas cylinder according to the present invention.

1 to 4, the rechargeable butane gas cylinder according to the present embodiment has an upper cap 210 and a lower cap 220 welded to upper and lower portions of the body 200, respectively, and an upper cap ( The valve 100 is coupled to the valve 100 capable of releasing and recharging the gas.

The body 200 is piped in a simple cylindrical shape having the same outer diameter of the upper and lower ends, and then the upper and lower ends of the trunk cores conforming to the container specifications of the butane gas cylinder shown in FIG. 5, respectively (68.3). Annular bead portions 202 and 204 protruding outward are formed so as to be ± 0.4 mm), and engaging grooves 203 and 205 are formed inside the bead portions 202 and 204.

The outside diameter of the core core is centered so that the valve tube can be set at the correct position when the gas cylinder is mounted in the gas range.

The method of forming the bead portion 202 and 204 and the coupling grooves 203 and 205 is a method used for manufacturing a metal corrugated pipe, that is, inserting an expansion hole made of a material such as silicon into the inside of the tubular cylindrical body 200, which is formed in the longitudinal direction thereof. By using the method of partially expanding the trunk 200 by expanding the expansion sphere in the radial direction by shrinking to, or by using a variety of other known methods can be easily formed, a detailed description of the molding method thereof will be omitted. Shall be.

In addition, flanges 214 and 224 for welding to the body 200 are formed on the outer sides of the upper and lower caps 210 and 220 in the present invention, and the flanges 214 and 224 are press-fit into the coupling grooves 203 and 205, respectively. Coupling protrusions 215 and 225 are formed.

The upper and lower caps 210 and 220 may be formed through a press and drawing process. In this embodiment, the upper end of the bead part 202 formed in the body 200 and the lower end of the bead part 204 are beaded. Edge portions 206 and 208 having an outer diameter smaller than the portions 202 and 204 are formed, and the edge portions 206 and 208 are formed at the upper end of the coupling protrusion 215 formed on the upper and lower caps 210 and 220 and the lower end of the coupling protrusion 215. Edge portion (216,226) consisting of the outer diameter to match the inner diameter of the) is formed so that the upper and lower caps are fitted to the upper and lower ends of the body by the pressure method, the cap shrinks due to some external shock or other temperature changes. In spite of the expansion of the body or body is not easily separated.

In the present embodiment, the edges 206, 208, 216, 226 are vertical, i.e., parallel to the longitudinal direction of the body 200, and the coupling protrusions 215, 225 of the upper and lower caps 210, 220 are formed on the upper and lower ends of the body 200. It is wider than the edges 206 and 208, so it is not easy to be simply inserted by hand only, and if it is pressed by force using a hydraulic press or the like, the flanges 214 and 224 on the outside of the upper and lower caps 210 and 220 are retracted inward, The fitting protrusions 215 and 225 formed on the flanges 214 and 224 of the upper and lower caps 210 and 220 are fitted to the 200 and are assembled while being fitted into the coupling grooves 203 and 205 inside the body 200, and thus, the upper and lower caps. The phenomenon in which the 210 and 220 are easily separated from the torso 200 does not occur.

Reference numeral b in the figure is a weld rod formed at the edge of the body 200 and the upper and lower caps (210, 220).

Meanwhile, in another embodiment of the present invention shown in FIG. 6, the edge portions 206, 208, 216, and 226 are formed to extend outwards, thereby making it easier to fit the upper and lower caps 210 and 220.

The valve 100 includes a valve body 110 assembled to a female screw hole 212 formed at the center of the upper cap 210 forming the body 200, and a spring 120 accommodated in the valve body 110. ) And the valve tube 130, and the valve seat 140 and the release preventing device 150 are formed.

Since the valve body 110, the spring 120, the valve tube 130, the valve seat 140, and the release preventing device 150 are the same as those of the applicant's pre-registered utility model No. 423661, a detailed description thereof is omitted. do.

Meanwhile, as shown in FIG. 2, the valve body 110 is prevented from being excessively coupled to the upper end of the valve body 110 when the valve body 110 is coupled to the female screw hole 212 of the upper cap 210. A flange portion 111a is formed to maintain the airtightness between the cap 210 and the valve body 110, and the upper surface of the flange portion 111a has a different width (for mounting the bracket 160). Fan-shaped protrusions 111b and 111c having an arc angle are formed differently), and the fan-shaped protrusions 111b and 111c are formed in the through hole 164 formed inside the bracket 160. The fan-shaped grooves 165a and 165b having the same shape as that of the butanes are formed by mounting the mounting grooves 162 formed on the outside of the bracket 160 and the extension pipe part 114 of the valve body 110 facing the same direction. Gas is not discharged as a liquid and vaporized inside the container. When the container is laid so as to be discharged to the extension pipe portion 114 is to be assembled so as to be located above.

The rechargeable butane gas cylinder of the present invention configured as described above may be mounted and used in a portable gas stove, as in the conventional disposable butane gas cylinder, and the gas inside the container is discharged to the outside by burning the gas inside the container while the valve tube 130 is pressed. When the butane gas is to be filled or recharged, the tip of the filling device of the gas filling device (not shown) is held in close contact with the escape prevention hole 150 and high pressure is applied to the valve seat 140 to be opened while being pressed by the high pressure gas. Butane gas is introduced in a large amount at a time to complete the filling in a short time, the discharge and refilling process of this gas is also the same as the applicant's prior registered utility model No. 442031.

As described above, the present invention has a coupling groove formed at the upper and lower inner sides of the container body, and a coupling protrusion press-fitted into the coupling groove is formed at the flange portion of the upper and lower cap outer sides so as to be firmly assembled by a press. It is possible to maintain the pre-assembled state before the welding of the lower cap can solve the problem of separation of the cap that may occur during the manufacturing process of the rechargeable butane gas cylinders and poor welding due to incomplete provisional state, the body 200, The bead portion protruding outward from the bottom has a practical effect of improving the structural strength of the container.

Claims (3)

In the upper part of the cylindrical body is welded to the upper cap to which the valve capable of releasing and refilling gas is welded, the lower cap is welded to the lower part of the body; At the upper and lower ends of the body 200, annular bead portions 202 and 204 are formed to protrude outward so as to have a body core outer diameter corresponding to the container specification of the butane gas cylinder, respectively, and the inner side of the bead portions 202 and 204 are coupled to each other. Grooves 203 and 205 are formed, and flange portions 214 and 224 for welding to the body 200 are formed on the outer side of the upper and lower caps 210 and 220, respectively. Rechargeable butane gas cylinder characterized in that the engaging projections (215, 225) are pressed into the (203, 205). The method according to claim 1, Edge portions 206 and 208 having an outer diameter smaller than those of the bead portions 202 and 204 are formed at the upper end of the bead portion 202 and the lower portion of the bead portion 204 formed in the body 200, and the upper and lower caps 210 and 220. Rechargeable butane gas cylinder is characterized in that the upper end of the coupling protrusion (215) formed in the lower end and the outer protrusion corresponding to the inner diameter of the edge portion (206,208) formed on the upper end of the coupling protrusion (215). The method according to claim 2, Rechargeable butane gas cylinder characterized in that the edge portion (206, 208, 216, 226) is formed to extend to the outside.

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