KR20120075309A - Aluminium heating coil production method of constant temperature tank in liquid chemical transfer ship - Google Patents

Aluminium heating coil production method of constant temperature tank in liquid chemical transfer ship Download PDF

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Publication number
KR20120075309A
KR20120075309A KR1020100138374A KR20100138374A KR20120075309A KR 20120075309 A KR20120075309 A KR 20120075309A KR 1020100138374 A KR1020100138374 A KR 1020100138374A KR 20100138374 A KR20100138374 A KR 20100138374A KR 20120075309 A KR20120075309 A KR 20120075309A
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KR
South Korea
Prior art keywords
bent
heating coil
aluminum
liquid cargo
tube
Prior art date
Application number
KR1020100138374A
Other languages
Korean (ko)
Inventor
김수임
Original Assignee
김수임
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Publication date
Application filed by 김수임 filed Critical 김수임
Priority to KR1020100138374A priority Critical patent/KR20120075309A/en
Publication of KR20120075309A publication Critical patent/KR20120075309A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/0093—Working by laser beam, e.g. welding, cutting or boring combined with mechanical machining or metal-working covered by other subclasses than B23K
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
    • B63J2/12—Heating; Cooling
    • B63J2/14—Heating; Cooling of liquid-freight-carrying tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/32—Wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Induction Heating (AREA)

Abstract

PURPOSE: A method for manufacturing aluminum heating coils for keeping homoeothermic liquid cargo in a ship for transporting liquid cargo is provided to reduce working time and to make heating coils lighter by reducing the number of welding parts. CONSTITUTION: A method for manufacturing aluminum heating coils for keeping homoeothermic liquid cargo in a ship for transporting liquid cargo is as follows. Multi-bent aluminum pipe members(10) are repetitively and consecutively manufactured. A second cut part comes in contact with a first cut art of the multi-bent aluminum pipe member. A sleeve(11) is fitted on the exterior of the first and second cut parts meeting each other. Both sides of the sleeve are welded. The multi-bent aluminum pipe members are consecutively extended according to the size of a tank in a ship.

Description

Aluminum heating coil production method of constant temperature tank in liquid chemical transfer ship

.

The present invention relates to a method for producing a heating coil made of aluminum for liquid cargo constant temperature holding of a liquid cargo transport vessel.

At the bottom of the liquid cargo storage tanks such as VLCC, COT, and PC ships, which are large liquid cargo carriers, heating coils are installed at regular intervals, and the liquid cargo contained in the storage tanks is circulated by steam or hot water inside the heating coil. It keeps constant temperature in state and makes it safe. Meanwhile, when the refrigerant is circulated inside the heating coil, the temperature of the liquid cargo may be drastically reduced or enhanced. In this case, the liquid cargo temperature may increase when the temperature of the liquid cargo rises above the set temperature due to an unexpected situation.

The most commonly used heating coil is a non-barrier steel pipe for pressure piping and its diameter is 2 inches, and an aluminum plating film is formed on the surface to prevent corrosion, which is a "J" shape as shown in FIG. After the one-time bent pipe (1) having a repeatedly produced, and then subjected to annealing, and then washed and pickled, and then again washed with water and flux treatment. Subsequently, molten aluminum plating is performed, followed by chemical cleaning, followed by washing with water, followed by post-treatment such as drying and defect inspection.

Subsequently, the complicated bent pipes 1 are arranged as shown in FIG. 7, but each sleeve is fitted with a sleeve 2, and both ends of the sleeve 2 are welded and then aluminum plated by welding. The welded part where the film | membrane disappeared is manufactured to match the size of a ship tank by applying an aluminum paint again.

Therefore, the manufacturing process of the heating coil for ships using a non-bare steel pipe is too complicated and in particular the aluminum plating process must be applied, and heating coils of the same size compared to the present invention, because a large number of single-piece pipe (1) must be manufactured In addition to the disadvantages that the amount of time required for fabricating the material must be allocated several ten times or more, the sleeve (2) is used a lot, and the welding parts are also increased, resulting in poor productivity, economic efficiency, and work efficiency. The application process and excessive welds are not only environmentally friendly, but also entails the end of polluting the air in the workplace and contaminating the water quality around the factory, which results in unhealthy results for workers.

In addition, steel pipes are heavy and cause unreasonable and uneconomical problems in view of the characteristics of the vessel, which should be as light as possible. Lungs develop.

In order to solve the problems, closures, and shortcomings caused by the manufacture and use of heating coils for non-barrier steel pipe vessels as described above, a one-time bending pipe body 1 is made of copper pipe or stainless steel pipe as shown in FIG. Alternative methods for connecting 1) using sleeves (2) have been devised, but several processes such as aluminum plating, washing, and detailed treatment are reduced and the advantages are generated. It is pointed out that the cost is very high compared to the steel pipe, and the number of sleeves and the number of welds is the same as the manufacturing process of the non-wood steel pipe, which is particularly inferior in economic efficiency. There is no underlying problem.

On the other hand, there have been attempts to produce non-barbed steel pipes, copper pipes, and stainless pipes as multi-bending pipes formed with bent portions of 4 to 5 times as in the present invention. Unless the material has excellent elongation and toughness, it is difficult to manufacture a multi-bent tube and has a high incidence of defects.

Accordingly, an object of the present invention is to provide a method for manufacturing an aluminum heating coil which can solve the problems and disadvantages resulting from the manufacture and use of the above-described conventional marine heating coil.

The present invention for solving the above-mentioned problems is constituted as follows.

[First Embodiment]

The semicircular bent portion is formed 4 to 5 times, and the first cut portion (I) is formed above the half of the distance L1 between the ends of the bent portion, and the second cut portion (II) is formed below the multiple. Repeatedly manufacturing the bent aluminum tube (10);

While the second cutout portion (II) is in contact with the first cutout portion (I) of the multi-bending aluminum tubular bodies 10 manufactured through the above steps, the slits are disposed outside the first cutout portion (I) and the second cutout portion (II). Inserting the eve 11, the both sides of the sleeve 11 is welded (W) is formed in such a way that is completed by continuously extending the multi-bending aluminum tube 10 to match the tank size of the vessel do.

Second Embodiment

The semicircular bent portion is formed 4 to 5 times, and the first cut portion (I) is formed above the half of the distance L2 between the ends of the bent portion, and the multiple extension tube portion 21 is formed below the multiple. Repeatedly manufacturing the bent aluminum tube 20;

Vessel in such a way that the first cut portion (I) is inserted into the expansion tube portion 21 of the multi-bending aluminum tubular bodies 10 manufactured through the above steps, and the weld portion W is formed at the end of the expansion tube portion 21. It is characterized by being completed by continuously extending the multi-bending aluminum tube 20 to match the tank size of the.

The present invention as described above, there is a very useful effect that can solve the above-mentioned disadvantages and problems, and the closing according to the manufacture and use of the heating coil for ships using conventional woodless steel pipe.

DETAILED DESCRIPTION OF THE EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments and structures shown in the drawings of the present invention only correspond to the most preferred embodiments of the present invention, and the technical features of the present invention. Since it is not intended to represent both the spirit and the object of the invention, it should be noted that various equivalent techniques and modifications that can be substituted for them at the time of filing the invention are subject to the scope of the invention.

First, the present invention is to have a diameter of 2 inches as in the prior art, but the material is selected for the elongation, toughness, corrosion resistance and light weight aluminum, and accordingly for ships using a multi-bend pipe having 4 to 5 bends It is characterized by manufacturing a heating coil. First, in the first embodiment, a semicircular bent portion is formed 4 to 5 times as shown in Fig. 1, and is located above 1/2 of the distance L1 between both ends of the bent portion. The first cut section I and the second cut section II with the second cut section II formed thereon are repeatedly produced in a continuous manner.

Since the equipment for multiple bending uses a conventional one, detailed description of the equipment will be omitted. In addition, the drawing of the present invention illustrates a multi-bent tube having a bent portion four times, but a method for manufacturing a heating coil for ships using a multi-bent tube formed by three or two or six times the bent portion is as described above. Since it is within the equivalent range from the present invention, the additional description will be omitted for this simple modification.

On the other hand, according to the actual experiments of the present inventors, when the bent portion is three or two times the number of the use of the sleeve is increased and the number of welds also increases the work time is prolonged and uneconomical problems, such as undesirable, bending It is difficult to manufacture due to the characteristics of the existing equipment and it is difficult to produce defects because it is more than 5 times but 6 times and 7 times. The conclusion is that it is most desirable in terms of gender.

Next, as shown in FIGS. 2 and 3, the second cutout part II contacts the first cutout part I of the multi-bending aluminum tubular bodies 10 manufactured through the above steps, but the first cutout part I and the first cutout part which are in contact with each other. 2 Put the sleeve 11 on the outside of the cut portion (II), and the welded portion (W) is formed on both sides of the sleeve 11 to form a multi-bending aluminum tube (10) to fit the tank size of the vessel. Continuously extending, the first embodiment of the present invention is completed.

After fixing the heating coil of the present invention using a known bracket fixed to the bottom of the tank, for example, at the upper end and the lower end of the heating coil of the present invention completed as shown in Figure 7, the fruit circulation device or refrigerant circulation Naturally, the pipe of the fruit circulation device having the device is connected.

Comparing FIG. 2 of the first embodiment of the present invention with FIG. 7 showing a conventional heating coil, the number of sleeves and the number of welded portions are reduced to 1/3 when a heating coil having the same size is manufactured. Not only is the economical efficiency improved, but the work time is greatly reduced, and the multi-bent pipe of the present invention is made of aluminum, which is characterized by being excellent in heat transfer efficiency and very light in weight compared to the non-barbed steel pipe, and being made of steel. Compared to the steel pipe, the welding reliability is excellent and the corrosion resistance is also higher, so the durability of the heating coil is greatly improved, and the complicated process and the post-treatment after welding are all eliminated.

Therefore, it is excellent in productivity, work efficiency, economical efficiency, eco-friendly manufacturing process, light weight and simple operation from the worker's point of view, so that safer and more convenient work can be achieved. It can not be said that the back is highlighted.

Next, referring to the second embodiment of the present invention, as shown in FIG. 4, the semicircular bent portions are formed 4 to 5 times, and the first cut portion I is positioned near 1/2 of the distance L2 between the bent ends. Then, a step of continuously manufacturing the multi-bending aluminum tubular body 20 having the extension pipe part 21 formed thereon is performed continuously, and then the multi-bending aluminum tubular body manufactured through the above steps as shown in FIGS. 5 and 6. The multi-bending aluminum tube to fit the tank size of the vessel in such a way that the first cut portion (I) is inserted into the extension tube portion 21 of the 10 and at the same time the weld portion W is formed at the end of the extension tube portion 21. It is characterized in that it is completed by continuously extending (20), which is to form a multi-tubular body 20 as in the first embodiment, and at the same time to further form an expansion tube part 21 using a known tube expansion machine Process is applied, but There is no need to use a rib and the number of welds (W) is also reduced to 1/2 compared to the first embodiment, the work time is further shortened and the total weight of the heating coil is lighter. .

Since other operations are the same as in the first embodiment, duplicate description will be omitted.

1 is a plan view showing a multi-bending aluminum tube according to a first embodiment of the present invention.

Figure 2 is an illustration showing a manufacturing state of the heating coil according to the first embodiment of the present invention.

Figure 3 is a cross-sectional view showing the welded fixing of the tube and the sleeve according to the first embodiment of the present invention.

Figure 4 is a plan view showing a multi-bending aluminum tube according to a second embodiment of the present invention.

5 is an exemplary view showing a manufacturing state of the heating coil according to the second embodiment of the present invention.

Figure 6 is a cross-sectional view showing a connection and welding state of the tube according to a second embodiment of the present invention.

Figure 7 is an exemplary view showing a manufacturing state of a conventional casingless steel pipe heating coil.

Claims (2)

The semicircular bent portion is formed 4 to 5 times, and the first cut portion (I) is formed above the half of the distance L1 between the ends of the bent portion, and the second cut portion (II) is formed below the multiple. Repeatedly manufacturing the bent aluminum tube (10); While the second cutout portion (II) is in contact with the first cutout portion (I) of the multi-bending aluminum tubular bodies 10 manufactured through the above steps, the slits are disposed outside the first cutout portion (I) and the second cutout portion (II). Inserting the eve 11, the both sides of the sleeve 11 is welded (W) is formed in such a way that is completed by continuously extending the multi-bending aluminum tube 10 to match the tank size of the vessel A manufacturing method of an aluminum heating coil for maintaining a liquid cargo constant temperature of a liquid cargo transport vessel. The semicircular bent portion is formed 4 to 5 times, and the first cut portion (I) is formed above the half of the distance L2 between the ends of the bent portion, and the multiple extension tube portion 21 is formed below the multiple. Repeatedly manufacturing the bent aluminum tube 20; Vessel in such a way that the first cut portion (I) is inserted into the expansion tube portion 21 of the multi-bending aluminum tubular bodies 10 manufactured through the above steps, and the weld portion W is formed at the end of the expansion tube portion 21. A method of producing a heating coil made of aluminum for liquid cargo constant temperature holding of a liquid cargo transport vessel, characterized in that it is completed by extending the multi-bending aluminum tube (20) to suit the tank size of the.
KR1020100138374A 2010-12-28 2010-12-28 Aluminium heating coil production method of constant temperature tank in liquid chemical transfer ship KR20120075309A (en)

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KR1020100138374A KR20120075309A (en) 2010-12-28 2010-12-28 Aluminium heating coil production method of constant temperature tank in liquid chemical transfer ship

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101652969B1 (en) 2016-06-08 2016-09-01 덕산산업주식회사 Manufactur ing method of hot-dip aluminized heating coil for tanker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101652969B1 (en) 2016-06-08 2016-09-01 덕산산업주식회사 Manufactur ing method of hot-dip aluminized heating coil for tanker

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