KR20090020825A - Tank hydro test method a period of dock stage using buoyancy of half diving state - Google Patents

Tank hydro test method a period of dock stage using buoyancy of half diving state Download PDF

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KR20090020825A
KR20090020825A KR1020070085419A KR20070085419A KR20090020825A KR 20090020825 A KR20090020825 A KR 20090020825A KR 1020070085419 A KR1020070085419 A KR 1020070085419A KR 20070085419 A KR20070085419 A KR 20070085419A KR 20090020825 A KR20090020825 A KR 20090020825A
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tank
wbt
hydro test
hydro
buoyancy
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KR1020070085419A
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Korean (ko)
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KR100914350B1 (en
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최민환
연정흠
신우행
박재형
이중호
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대우조선해양 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B79/00—Monitoring properties or operating parameters of vessels in operation
    • B63B79/30—Monitoring properties or operating parameters of vessels in operation for diagnosing, testing or predicting the integrity or performance of vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B11/00—Interior subdivision of hulls
    • B63B11/04—Constructional features of bunkers, e.g. structural fuel tanks, or ballast tanks, e.g. with elastic walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
    • B63B43/06—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability using ballast tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B71/00—Designing vessels; Predicting their performance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C1/00—Dry-docking of vessels or flying-boats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C1/00—Dry-docking of vessels or flying-boats
    • B63C1/02—Floating docks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

A tank hydro test method at the dock stage is provided, which can perform the hydro test of the several stages and prevents deformation of the LNG container. A tank hydro test method at the dock stage comprises: a step for pumping the ballast tank by using the reduced load by adding the buoyancy to the ship of the half submerging condition; and a step for performing the hydro test about the ballast whole tank. The ballast tank is alternately arranged in the starboard and port. The hydro test can be performed through the method in several tanks.

Description

반잠수 상태의 부력을 이용한 도크 단계에서의 탱크 하이드로 테스트 방법{Tank hydro test method a period of dock stage using buoyancy of half diving state} Tank hydro test method a period of dock stage using buoyancy of half diving state}

본 발명은 반잠수 상태의 부력을 이용한 도크 단계에서의 탱크 하이드로 테스트 방법에 관한 것이다. 더욱 상세하게는 도크에 주수하거나 플로팅 도크를 반잠수시켜서 발생하는 부력으로서 하이드로 탱크에 추가되는 하중을 경감시키는 방법으로 탱크 하이드로 테스트를 수행하는 방법에 관한 것이다.The present invention relates to a tank hydro test method in a dock stage using buoyancy in a semi-submerged state. More specifically, the present invention relates to a method of performing a tank hydro test by reducing the load added to the hydro tank as buoyancy generated by pouring into the dock or by half submerging the floating dock.

일반적으로, 하중초과로 인해 대형 선박의 경우 도크 단계에서는 탱크 하이드로 테스트(Tank Hydro Test)의 수행이 불가하며, 통상 선박과 도크 바닥의 반력이 작용하지 않는 안벽 단계에서 하이드로 테스트(hydro test)를 수행하게 된다.In general, due to the overload, tank hydro test cannot be performed in the dock stage of a large ship, and hydro test is performed in the quay wall stage in which reaction forces between the ship and the dock bottom are not applied. Done.

부득이하게 도크 단계에서 수행 시에는 여러 단계로 나누어 한 탱크씩 수행하므로 공기 지연이 발생하였으며, 하이드로 테스트를 선행화하는 것이 바람직하지만, 반력 증가로 인해 수행이 불가하였다. 여기서, 상기 하이드로 테스트란 각 발 라스트 탱크의 기계적 강도를 점검하는 것을 말한다. Inevitably, when the docking step is performed in one tank by dividing into several stages, an air delay occurs, and it is preferable to prioritize the hydro test, but it cannot be performed due to increased reaction force. Here, the hydro test means checking the mechanical strength of each ball last tank.

특히, 도크 단계의 선박에서 일반적인 방법의 하이드로 테스트를 수행 할 경우하이드로 테스트 대상 탱크의 주수 용량만큼의 하중이 증가하며, 이로 인해 구조 손상이 증가하므로 동시에 여러 개의 탱크를 대상으로 하이드로 테스트를 수행 할 수 없다.In particular, when performing a hydrotest of the usual method on a ship in a dock phase, the load increases by the amount of water in the tank under hydrotesting, which increases the structural damage, which allows the hydrotest to be carried out on several tanks at the same time. none.

따라서, 구조강도를 만족하기 위해 순차적인 방법으로 한 탱크씩 하이드로 테스트를 수행하여야 하며, 대상 탱크에 주수 기간이 증가하여 도크 공기가 지연되었다.Therefore, in order to satisfy the structural strength, the hydrotest should be performed one by one in a sequential manner, and the docking air was delayed due to the increase in watering period in the target tank.

이러한 상기와 같은 이유로 하이드로 테스트를 선행화하지 못하고, 통상 안벽에서 하이드로 테스트를 수행하게 되었다.For this reason, it was not possible to prioritize the hydrotest, and the hydrotest was usually performed on the quay wall.

이에, 본 발명은 상기한 문제점을 해결하기 위한 것으로서 본 발명의 목적은 도크에 주수하거나 플로팅 도크를 반잠수시켜서 발생하는 부력으로서 하이드로 탱크에 추가되는 하중을 경감시키는 방법으로 구조 손상 위험을 줄이고, 여러 탱크의 테스트를 동시에 수행할 수 있는 도크 단계에서의 탱크 하이드로 테스트 방법을 제공하는 데 있다.Accordingly, the present invention is to solve the above problems, an object of the present invention is to reduce the risk of structural damage by reducing the load added to the hydro tank as buoyancy generated by pouring or docking the floating dock half, The present invention provides a method of testing a tank hydro in a docking step in which a test of a tank can be simultaneously performed.

상기한 본 발명의 목적을 달성하기 위한 기술적 사상으로서 본 발명에 의하면, 선박의 플로팅 도크 단계에서 발라스트 탱크(WBT)의 하이드로(hydro) 테스트를 수행하는 방법에 있어서, 반잠수 상태의 선박에 부력을 가해 경감되는 하중을 이용하여 우현(P)과 좌현(S)을 번갈아 가면서 배치된 발라스트 탱크를 펌핑하면서 그와 동시에 발라스트 탱크 전체에 대해 하이드로 테스트를 수행하는 단계를 포함하는 것을 특징으로 하는 도크 단계에서의 탱크 하이드로 테스트 수행방법을 제시한다.According to the present invention as a technical idea for achieving the object of the present invention, in the method of performing a hydro test of the ballast tank (WBT) in the floating dock stage of the vessel, buoyancy to the semi-submersible vessel Pumping the ballast tanks arranged alternately between starboard (P) and port (S) using a reduced load applied thereto and simultaneously performing a hydro test on the entire ballast tank. Suggests how to perform a tank hydro test.

이상에서와 같이 본 발명에 의하면, 반잠수 상태의 선박에 부력을 가해 경감되는 하중을 이용하여 우현(P)과 좌현(S)을 번갈아 가면서 배치된 발라스트 탱크를 펌핑하면서 그와 동시에 발라스트 탱크 전체에 대해 하이드로 테스트를 수행함으로써 도크 단계에서 하이드로 테스트 공정을 선행화할 수 있으며, 여러 단계의 하이드로 테스트 공정을 동시에 수행할 수 있다.As described above, according to the present invention, while pumping the ballast tank arranged alternately between starboard (P) and port (S) by using a load that is reduced by applying buoyancy to the semi-submerged vessel while at the same time throughout the ballast tank By performing a hydro test on the dock stage, the hydro test process can be preceded and multiple hydro test processes can be performed simultaneously.

또한, 본 발명은 하이드로 테스트 수행 결과 탱크의 구조적 결함 및 LNG 컨테이너의 비뚤어짐(deflection) 등의 변형 발생시 조치 비용을 최소화할 수 있다.In addition, the present invention can minimize the cost of measures in the event of deformation, such as structural defects in the tank and deflection of the LNG container as a result of performing the hydro test.

이하, 본 발명의 실시 예에 대한 구성 및 그 작용을 첨부한 도면을 참조하면서 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

도 1은 본 발명에 따른 하이드로 테스트를 위한 플로팅 도크의 배치 구조도 이다. 도 2는 본 발명에 따른 반잠수 상태의 부력을 이용한 하이드로 테스트의 진행 상태를 나타낸 단면도이다.1 is a layout view of a floating dock for hydro testing according to the present invention. Figure 2 is a cross-sectional view showing the progress of the hydro test using buoyancy in the semi-submersible state according to the present invention.

도 1을 살펴보면, 본 발명은 선박의 플로팅 도크 단계에서 발라스트 라인으로 펌핑(pumping)하여 전(全) 탱크를 동시에 하이드로 테스트를 진행한다.Referring to FIG. 1, the present invention pumps a ballast line in a floating dock stage of a ship to simultaneously hydro-test all tanks.

다시 말해, 본 발명은 선박의 우현과 좌현을 번갈아 가면서 배치된 발라스트 탱크, 즉 NO.1 WBT(S): 6600톤(100%)(1), NO.2 WBT(P): 7800톤(100%)(2), NO.3 WBT(S): 8300톤(100%)(3), NO.4 WBT(P): 8300톤(100%)(4), NO.5 WBT(S): 7300톤(100%)(5)의 발라스트 탱크 전체를 펌핑하면서 동시에 하이드로 테스트를 진행한다.In other words, the present invention is a ballast tank alternately arranged in the starboard and port of the ship, that is, NO.1 WBT (S): 6600 tons (100%) (1), NO.2 WBT (P): 7800 tons (100 %) (2), NO.3 WBT (S): 8300 tons (100%) (3), NO.4 WBT (P): 8300 tons (100%) (4), NO.5 WBT (S): The entire hydrostatic ballast tank of 7300 tonnes (100%) (5) was pumped at the same time.

또한, 상기 WBT는 발라스트 탱크(Water Ballast Tank)를 나타내며, NO.1, NO.3, NO.5 WBT(S)의 S는 우현(starboard)를 나타내고, NO.2, NO.4의 WBT(P)의 P는 좌현(port)을 나타낸다.In addition, the WBT represents a water ballast tank, S of NO.1, NO.3, NO.5 WBT (S) represents a starboard, and WBT (NO.2, NO.4) of WBT ( P in P) represents a port.

그리고, 본선의 화물창 탱크(CARGO TANK) 내의 좌측에 발라스트 탱크(WBT)(P)가 배치되면 맞은편 우측에는 발라스트 탱크(WBT)(S)가 배치되고, 우측에 발라스트 탱크(WBT)(S)가 배치되면 맞은편 좌측에는 발라스트 탱크(WBT)(P)가 배치된다. Then, when the ballast tank (WBT) (P) is disposed on the left side in the cargo tank (CARGO TANK) of the ship, the ballast tank (WBT) (S) is arranged on the opposite right side, the ballast tank (WBT) (S) on the right side Is disposed, the ballast tank (WBT) (P) is disposed on the opposite left side.

이와 같이, 본 발명은 도크에 주수하거나 플로팅 도크(Floating Dock)를 반잠수시켜서 발생하는 부력으로서 하이드로 탱크(hydro tank)에 추가되는 하중을 경감시키며, 선박을 진수시키지 않은 조건을 유지하면서 로컬하중 초과에 의한 구조 손상을 유발하지 않게 된다.As such, the present invention reduces the load added to the hydro tank as buoyancy generated by pouring into the dock or by half submerging the floating dock, and exceeding the local load while maintaining the condition of not launching the vessel. It will not cause structural damage.

또한, 본 발명은 반력을 경감시켜 여러 탱크의 하이드로 테스트(hydro test)를 동시에 수행할 수 있으며, 가배관을 설치하여 본선 발라스트 라인으로 하이드로 테스트 탱크에 주수한다.In addition, the present invention can reduce the reaction force can be carried out at the same time the hydro test (hydro test) of several tanks, by installing a gas pipe to feed the hydro test tank in the main ballast line.

따라서, 본 발명은 선박에 부력을 가해 하중을 경감시킴과 동시에 전 탱크에 대해 하이드로 테스트를 수행할 수 있다.Therefore, the present invention can reduce the load by applying a buoyancy to the vessel and at the same time can perform a hydro test for all tanks.

즉, 도 2에 도시된 바와 같이 선박이 흘수선까지 잠긴 상태에서 하이드로 테스트를 수행함으로써 하중 경감으로 전 탱크에 대해 동시에 하이드로 테스트가 가능하다. That is, as shown in Figure 2 by performing a hydro test in a state where the ship is locked to the waterline, it is possible to simultaneously hydro-test all the tanks to reduce the load.

상술한 바와 같이, 본 발명의 바람직한 실시 예에 대해 설명하였으나, 본 발명은 상술한 특정의 바람직한 실시 예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 기술적 범위 내에 포함된다 할 수 있다.As described above, although preferred embodiments of the present invention have been described, the present invention is not limited to the specific preferred embodiments described above, and the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Anyone of ordinary skill in the art can make various modifications, as well as such changes can be included within the technical scope of the claims.

도 1은 본 발명에 따른 하이드로 테스트를 위한 플로팅 도크의 배치 구조도이다.1 is a layout view of a floating dock for hydro testing according to the present invention.

도 2는 본 발명에 따른 반잠수 상태의 부력을 이용한 하이드로 테스트의 진행 상태를 나타낸 단면도이다.Figure 2 is a cross-sectional view showing the progress of the hydro test using buoyancy in the semi-submersible state according to the present invention.

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

1: NO.1 WBT(S): 6600톤 2: NO.2 WBT(P): 7800톤1: NO.1 WBT (S): 6600 tons 2: NO.2 WBT (P): 7800 tons

3: NO.3 WBT(S): 8300톤 4: NO.4 WBT(P): 8300톤3: NO.3 WBT (S): 8300 tons 4: NO.4 WBT (P): 8300 tons

5: NO.5 WBT(S): 7300톤5: NO.5 WBT (S): 7300 tons

Claims (3)

선박의 플로팅 도크 단계에서 발라스트 탱크(WBT)의 하이드로(hydro) 테스트를 수행하는 방법에 있어서,In the method of performing a hydro test of the ballast tank (WBT) in the floating dock stage of the vessel, 반잠수 상태의 선박에 부력을 가해 경감되는 하중을 이용하여 우현(P)과 좌현(S)을 번갈아 가면서 배치된 발라스트 탱크를 펌핑하면서 그와 동시에 발라스트 탱크 전체에 대해 하이드로 테스트를 수행하는 단계를 포함하는 것을 특징으로 하는 도크 단계에서의 탱크 하이드로 테스트 방법.Pumping the ballast tanks arranged alternately between starboard (P) and port (S) using a load that is reduced by buoyancy to the semi-submerged vessel, and simultaneously performing a hydrotest on the entire ballast tank. Tank hydro test method in the docking step, characterized in that. 제 1 항에 있어서, 상기 선박이 흘수선까지 잠긴 반잠수 상태에서 부력을 가해 경감되는 하중을 이용하여 하이드로 테스트를 수행하는 것을 특징으로 하는 도크 단계에서의 탱크 하이드로 테스트 방법.The method of claim 1, wherein the hydro test is performed using a load that is reduced by buoyancy in a semi-submerged state in which the vessel is submerged to the waterline. 제 1 항에 있어서, 상기 선박의 발라스트 탱크는 우현과 좌현을 번갈아 가면서 NO.1 WBT(S): 6600톤(100%), NO.2 WBT(P): 7800톤(100%), NO.3 WBT(S): 8300톤(100%), NO.4 WBT(P): 8300톤(100%), NO.5 WBT(S): 7300톤(100%)의 순서로 배치된 것을 특징으로 하는 도크 단계에서의 탱크 하이드로 테스트 방법.The ballast tank of claim 1, wherein the ballast tank of the ship alternates between starboard and port, NO.1 WBT (S): 6600 tons (100%), NO.2 WBT (P): 7800 tons (100%), NO. 3 WBT (S): 8300 tons (100%), NO.4 WBT (P): 8300 tons (100%), NO.5 WBT (S): 7300 tons (100%) Tank hydro test method at the dock stage.
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KR20170001055A (en) 2015-06-25 2017-01-04 삼성중공업 주식회사 Endplate Unit of Ballast Tank
CN112078746A (en) * 2020-08-11 2020-12-15 沪东中华造船(集团)有限公司 Method for carrying out strength test on ballast tank in dock
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CN113148059A (en) * 2021-04-13 2021-07-23 上海外高桥造船有限公司 General section strength test and insulation installation method of gas transport ship
CN113148060A (en) * 2021-04-13 2021-07-23 上海外高桥造船有限公司 Gas transport ship block strength test and insulation installation method
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JPS6264690A (en) 1985-09-17 1987-03-23 Nippon Kokan Kk <Nkk> Ballast device for center of gravity assesment test for floating structures such as marine vessel and the like

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KR20170001055A (en) 2015-06-25 2017-01-04 삼성중공업 주식회사 Endplate Unit of Ballast Tank
CN112078746A (en) * 2020-08-11 2020-12-15 沪东中华造船(集团)有限公司 Method for carrying out strength test on ballast tank in dock
CN112098222A (en) * 2020-08-11 2020-12-18 沪东中华造船(集团)有限公司 LNG ship ballast tank strength test method
CN113148059A (en) * 2021-04-13 2021-07-23 上海外高桥造船有限公司 General section strength test and insulation installation method of gas transport ship
CN113148060A (en) * 2021-04-13 2021-07-23 上海外高桥造船有限公司 Gas transport ship block strength test and insulation installation method
CN117734902A (en) * 2024-02-19 2024-03-22 江苏扬子鑫福造船有限公司 Ballast tank strength test equipment and test method
CN117734902B (en) * 2024-02-19 2024-05-03 江苏扬子鑫福造船有限公司 Ballast tank strength test equipment and test method

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