KR100243745B1 - Assembly method of pressure container(lpg tank) - Google Patents

Assembly method of pressure container(lpg tank) Download PDF

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Publication number
KR100243745B1
KR100243745B1 KR1019970038993A KR19970038993A KR100243745B1 KR 100243745 B1 KR100243745 B1 KR 100243745B1 KR 1019970038993 A KR1019970038993 A KR 1019970038993A KR 19970038993 A KR19970038993 A KR 19970038993A KR 100243745 B1 KR100243745 B1 KR 100243745B1
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South Korea
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plate
welding
tank
assembling
plates
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KR1019970038993A
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Korean (ko)
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KR19990016441A (en
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임헌진
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김정국
현대중공업주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/21—Shaping processes
    • F17C2209/2181—Metal working processes, e.g. deep drawing, stamping or cutting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/013—Reducing manufacturing time or effort

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

본 고안은 선박의 홀드에 탑재되는 압력 용기인 LPG탱크 조립 방법에 관한 것으로서 더 상세하게는 주판재를 2플레이트씩 선판계하여 조립하므로 용접 자동화를 극대화하고 용접 품질을 향상시킴으로서 제작 공기 단축과 작업 공수를 절감시키는 조립 방법에 관한 것이다.The present invention relates to an LPG tank assembling method, which is a pressure vessel mounted on a ship's hold. More specifically, since the main plate is assembled by two plates in a line system, it maximizes welding automation and improves welding quality. It relates to an assembly method to reduce the.

LPG 탱크 조립에 있어서 쉴 플레이트(SHELL PLATE)"A""B"를 2/3"X"형으로 개선 후 두 판 사이를 최대 0.8mm의 간격을 유지시켜 판 "A""B"의 용접심을 3∼4패스 자동 표면 용접시키고 판을 T/OVER하여 4∼5 패스 이면 용접 수행후 선판계 용접된 플레이트를 일체로 한 번에 롤러 벤딩 기계로 벤딩 후 탱크를 제작하는 저온강 LPG 탱크 조립 방법이다.In assembling LPG tanks, SHELL PLATE "A" "B" is improved to 2/3 "X" type, and the welding seam of plate "A" "B" is maintained by maintaining a maximum gap of 0.8mm between two plates. This is a method for assembling low-temperature steel LPG tanks in which a 3 ~ 4 pass automatic surface welding is performed and the plate is T / OVER, and after 4 ~ 5 pass, welding is performed and the plate welded plate is integrally bent at one time with a roller bending machine to produce a tank. .

Description

압력 용기(LPG 탱크) 조립 방법How to assemble a pressure vessel (LPG tank)

본 고안은 선박의 홀드(Hold)에 탑재되는 압력 용기인 LPG 탱크 조립 방법에 관한 것으로서 더 상세하게는 주판재를 2개의 플레이트씩 평철판을 맞대어서 선판계자동용접하여 조립하므로 용접 자동화를 극대화하고 용접 품질을 향상시킴으로서 제작 공기 단축과 작업 공수를 절감시키는 조립 방법에 관한 것이다.The present invention relates to a method for assembling an LPG tank, a pressure vessel mounted on a ship's hold. More specifically, the main plate material is assembled by automatic welding of the plate plate against two flat plates, thereby maximizing welding automation. The present invention relates to an assembly method for shortening manufacturing air and reducing work man-hours by improving welding quality.

종래 압력 용기의 조립 방법은 도2의 (a)에 도시한 바와 같이 치수가 4.2m×11m의 각 철판을 가공하여 (b)와 같이 한 개의 판씩 롤러 벤딩기에서 벤딩하여 조립장으로 이송 후 벤딩된 판을 (d)와 같이 주판재 취부 용접을 수행하였는데 벤딩판을 취부시에는 조립용 안내판(족장)의 다량 취부와 정도 유지를 위한 작업 시간이 많이 소요되고 크레인 사용 시간도 많이 소요 되었다.In the conventional method of assembling a pressure vessel, as shown in FIG. 2 (a), each iron plate having a dimension of 4.2m × 11m is processed and bent in a roller bending machine one by one as shown in (b) to be transferred to an assembly site and then bent. The plate was welded to the main plate as shown in (d). When the bending plate was attached, it took a lot of time to install and maintain the guide plate (chief) for assembling.

또한 판 셋팅 후 "V"형으로 개선된 주판재의 상하판 용접부 용접시 도2에 도시된 바와 같이 용접부의 후단에 세라믹 백킹(CERAMIC BACKING)재를 취부후 족장판 위에서 곡면을 따라 여러번 다층용접(28pass)으로 수동 용접을 수행하므로 용접 작업 공수 및 수정에 따른 공수가 많이 소요 되어 공기가 지연되는 등의 문제가 있으며 용접 결합 체크를 위한 검사 작업도 높은 위치에서 실시하여야 하므로 작업이 어려울 뿐만 아니라 용접부 결합 크랙 및 수정에도 어려움이 따른다.In addition, when welding the upper and lower plate welded parts of the main plate material improved to "V" shape after plate setting, as shown in FIG. 2, a ceramic backing material is attached to the rear end of the welded part and then multilayer welding is performed on the chief plate several times along the curved surface. 28pass), because manual welding is performed, there is a problem such as delay in air due to many labors and modifications due to the welding work, and the inspection work for checking the weld joint must also be carried out at a high position. Difficulties in cracking and correcting.

또한 한 개의 판씩 벤딩하는 공수가 과다하게 소요되며 상기의 작업을 수행하기 위한 판 이동과 작업용 족장판의 다량 설치 및 해체에도 많은 인력과 공수가 소요되는 등의 문제점이 발생하였다.In addition, there is an excessive number of maneuvers to bend one by one plate, a lot of manpower and labor is required to move the plate to perform the above work and to install and dismantle a large amount of work chief plate.

본 고안은 상기와 같은 문제점을 해결하기 위하여 안출한 것으로서 "X"형 으로 개선한 두 개의 철판을 용접하는 선판계 용접을 적용하여 자동 용접률 증가와 고소 작업을 방지하고 자동 용접의 효율성을 부여하여 용접 품질을 향상시키고 벤딩(성형) 횟수를 반으로 줄여 판의 이동→적치→벤딩 공수등 전반적인 작업 공정 감소와 공수를 절감시킬 수 있는 조립 방법을 제공하기 위한 것이다.The present invention has been made to solve the above problems, by applying a line-type welding welding two steel plates improved to the "X" type to prevent the increase of automatic welding rate and high-rise work and to give the efficiency of automatic welding To improve the welding quality and to reduce the number of bending (molding) in half, to provide an assembly method that can reduce the overall work process, such as plate movement → loading → bending man-hours.

상기의 조립 방법을 제공하기 위하여 플레이트 심(PLATE SEAM)부 자동 용접기법을 적용하기 위하여 철판을 "X" 형으로 상부를 2/3 개선한 각각의 판을 평정반에서 선 자동판계를 수행하므로 최종 조립 판수를 감소시키고 용접 품질과 작업 능률 향상을 가져오는 방법을 제공하게 하는 것이다.In order to provide the above assembly method, in order to apply the plate seam automatic welding technique, each plate with the steel plate "X" type improved by two-thirds is performed on the platen. It is to provide a way to reduce the number of assembly plates and improve the welding quality and work efficiency.

도1은 본 고안 압력 용기 조립 방법의 공정 순서도.1 is a process flowchart of the present invention pressure vessel assembly method.

도2는 종래 압력 용기 조립 방법의 공정 순서도.Figure 2 is a process flow diagram of a conventional pressure vessel assembly method.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

A,B : 주판재A, B: abacus

첨부된 도면에 의거하여 본 고안의 구성 및 작용을 상세히 설명하면 다음과 같다.Referring to the configuration and operation of the present invention in detail based on the accompanying drawings as follows.

도1은 본 고안의 조립 방법을 도시한 개략적인 흐름도로써 선박용 압력 용기인 LPG 탱크를 조립하는데 있어 주판이 절단되고 선판계 실시후 벤딩되어 조립되는 과정을 순서에 따른 흐름을 도시한 것이다.Figure 1 is a schematic flow chart illustrating an assembly method of the present invention shows the flow of the main plate in order to assemble the bent and cut after performing the plate plate in assembling the LPG tank of the vessel pressure vessel.

LPG 탱크 조립에 있어서 쉴 플레이트(SHELL PLATE) "A" "B"를 "X"형으로 2/3씩 개선 후 두개의 판 사이를 최대 0.8mm의 간격을 유지시켜 용접심의 2/3두께 쪽을 740~750A, 32~34V, 40~45SPEED로 적층하여 3~4PASS의 다층으로 자동 표면 용접시키고 판을 뒤집어서(T/OVER) 이면 가우징후 4~5PASS를 다층이면 용접을 수행한다.In the LPG tank assembly, the SHELL PLATE "A" "B" is improved by 2/3 by "X" type, and the gap between the two plates is maintained by max. 740 ~ 750A, 32 ~ 34V, 40 ~ 45SPEED laminated to 3 ~ 4PASS multi-layer automatic surface welding, and the plate is turned upside down (T / OVER) and after gouging 4 ~ 5PASS multi-layer welding is performed.

평철판을 맞대어 선판계 완료된 판의 용접 비드를 0.3mm 이하로 플러쉬 그라이딩(FLUSH GRINDING)후 용접부 비파괴 검사를 사전에 검사하여 벤딩장에서 그림 (C)와 같이 탱크의 곡형상 촌법대로 곡벤딩을 수행한 후 탱크의 본 조립장으로 이송후 크레인으로 리프팅하여 도면과 같이 탱크를 수직 자세로 조립시키는 방법이다.FLUSH GRINDING the weld bead of the finished plate to the flat plate against 0.3mm or less and then inspect the weld nondestructive inspection in advance, and then bending it according to the curved shape of the tank as shown in (C) at the bending site. After carrying out the transfer to the main assembly of the tank and lifting by the crane is a method of assembling the tank in a vertical position as shown.

대형판을 선판계하여 조립 수행하므로 수동 용접시 투입된 용접 공수를 최소화시키고 용접 품질의 향상과 용접-검사-운반-핸들링-취부 조립등 조립 전공정에서 수반되는 부수적인 작업의 편리화를 가져와 많은 제작 공수를 절감시킬 수 있으며 탱크의 품질 향상시킬 수 있는 것이다.As the assembly is performed by the large plate system, it minimizes the welding man-hours in manual welding and improves the welding quality and facilitates the additional work involved in the whole assembly process such as welding-inspection-carrying-handling-mounting assembly. It can reduce the man-hours and improve the quality of the tank.

그러므로 본 고안은 29.4mm두께의 저온강 (LT60~490을 종래의 낱장씩 벤딩 및 수동 용접 조립하던 것을 벤딩전에 평면 상태에서 선판계 자동 용접을 실시하므로 자동화에 따른 용접 능률 향상 및 용접 결함을 감소시켜 조립을 용이하게하여 탱크 제작 정도를 상향시켜 품질 향상의 효과가 있을뿐만 아니라 제작 공기를 종래의 1/3정도 단축시킬 수 있으며 비파괴 검사 합격률을 종래 97%에서 99%로 상향시켜 용접 품질을 고급화하고 탱크 제작중 판계 -조립 단계의 공정에 있어 종래에 비해 월등한 효과가 있는 것이다.Therefore, the present invention performs the automatic welding of the sheet metal system in the flat state before bending, which is the conventional sheet bending and manual welding of LT60 ~ 490, which is 29.4mm thick low temperature steel. It is easy to assemble to raise the degree of production of the tank, which not only improves the quality, but also shortens the manufacturing air by about 1/3 of the conventional quality, and improves the welding quality by raising the non-destructive inspection pass rate from 97% to 99%. In the manufacturing process of the tank plate-assembly step will have a superior effect than the conventional.

Claims (1)

LPG 탱크 조립에 있어서 쉴 플레이트(SHELL PLATE) "A" "B"를 X형으로 2/3씩 개선 후 두개의 판 사이를 최대 0.8mm의 간격을 유지시켜 판 "A" "B"의 용접심을 3~4패스의 다층으로 자동 표면 용접시키고 판을 뒤집어서(T/OVER) 4~5 패스 이면 용접 수행후 두 개의 평철판이 선판계 용접된 플레이트를 일체로 한 번에 롤러 벤딩 기계로 벤딩 후 탱크를 제작하는 것을 특징으로 하는 저온강 LPG 탱크 조립 방법.In the assembly of LPG tank, SHELL PLATE "A" "B" is improved by 2/3 by X type, and the welding seam of plate "A" "B" is maintained by maintaining a maximum gap of 0.8mm between two plates. Automatic surface welding with multi-layer of 3 ~ 4 pass, T / OVER upside down (T / OVER), and after 4 ~ 5 pass welding, two flat iron plates are bent together with plate bending machine by roller bending machine at once and then tank Low temperature steel LPG tank assembly method characterized in that the production.
KR1019970038993A 1997-08-14 1997-08-14 Assembly method of pressure container(lpg tank) KR100243745B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102579891B1 (en) * 2023-04-20 2023-09-15 김연기 Manufacturing method of tank pressure vessel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019107627A1 (en) * 2017-11-28 2019-06-06 (주)건호이엔씨 Assembly-type silo

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102579891B1 (en) * 2023-04-20 2023-09-15 김연기 Manufacturing method of tank pressure vessel

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