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1. 发明公开

KR1020100102886A ＧＴＴＮＯ96 멤브레인형 ＬＮＧ선 카고탱크의 기밀검사 방법 有权
标题翻译： GTT NO96膜型液化天然气坦克测试方法
公开(公告)号：KR1020100102886A
公开(公告)日：2010-09-27
申请号：KR1020090021175
申请日：2009-03-12
申请人： 주식회사 디섹
发明人： 양현중 , 박주엽
IPC分类号： F17C13/02 , G01M3/20 , B63B25/08
摘要： PURPOSE: An air-tightness test method for a liquefied natural gas(LNG) cargo tank is provided to systematically implement an air-tightness inspection process by implementing a second insulated film test step, a fist insulated film test step and a liquid dome air-tightness test step. CONSTITUTION: In a second insulated film test step, a strength test(S10), a bearing test(S20), a defect repairing process(S30), a helium gas injecting process(S55), a mechanical stressing test(S40), a helium leakage checking process(S50), a repairing process for the leakage part(S65), a repaired part test(S60), a helium concentration measuring test(S75), a corrected part bearing test(S25), and a global test(S80) are performed. In a first insulated film test step, the mechanical stressing test, the bearing test, the helium gas injecting process, a secondary helium leakage checking process, the repairing process for the leakage part, the repaired part test, the helium concentration measuring test, the corrected part bearing test, the strength test, and the global test. A liquid dome air-tightness test step including a welding process for a helium injection hole is implemented.
摘要翻译：目的：提供液化天然气（LNG）货舱的气密性试验方法，通过实施第二绝缘膜测试步骤，第一绝缘膜测试步骤和液体圆顶空气 - 气体检测步骤，系统地实施气密性检查过程，紧度测试步骤。构成：在第二绝缘膜测试步骤中，强度测试（S10），轴承测试（S20），缺陷修复过程（S30），氦气注入过程（S55），机械应力测试（S40），氦泄漏检查处理（S50），泄漏部分的修理处理（S65），修理部分试验（S60），氦浓度测定试验（S75），修正部分轴承试验（S25）和全局试验 S80）。在第一绝缘膜测试步骤中，机械应力测试，轴承测试，氦气注入过程，二次氦泄漏检查过程，泄漏部分的修复过程，修理部件测试，氦浓度测量测试，校正部分轴承试验，强度试验和全球试验。实现了包括用于氦注入孔的焊接工艺的液体圆顶气密性测试步骤。

2. 发明授权

KR101022860B1 ＧＴＴＮＯ96 멤브레인형 ＬＮＧ선 카고탱크의 기밀검사 방법 有权
标题翻译： GTT NO96膜式液化天然气储罐密封试验方法
公开(公告)号：KR101022860B1
公开(公告)日：2011-03-16
申请号：KR1020090021175
申请日：2009-03-12
申请人： 주식회사 디섹
发明人： 양현중 , 박주엽
IPC分类号： F17C13/02 , G01M3/20 , B63B25/08
摘要： 본 발명은 GTT NO96 멤브레인형 LNG선 카고탱크의 제작단계에서 필요한 기밀검사 방법에 관한 것으로서, 기존의 LNG선 카고탱크 기밀검사 공정을 개선하여 전체적인 검사공정 시간을 단축함으로써 기존의 검사품질을 저해하지 않으면서도 보다 빠른 시간 내에 그리고 체계적이고 정확하게 기밀검사를 완료할 수 있도록 하는 방법을 제시한다.
기밀검사, 헬륨누설검사, 제작검사, LNG선, 단열막

3. 发明公开

KR1020100023276A ＬＮＧ 저장탱크의 누설검사 장치 有权
标题翻译：液化天然气泄漏测试设备
公开(公告)号：KR1020100023276A
公开(公告)日：2010-03-04
申请号：KR1020080081955
申请日：2008-08-21
申请人： 주식회사 디섹
发明人： 김동섭 , 양현중
IPC分类号： F17C13/02 , F17C1/00
摘要： PURPOSE: A leak detecting device for an LNG storage tank is provided to safely obtain inspection conditions of an inspection zone from pollution within an LNG storage tank due to helium gas leakage of a helium balloon by transferring a helium gas detecting probe to an object section to be inspected. CONSTITUTION: A leak detecting device for an LNG storage tank comprises a helium balloon, a helium gas detecting probe(12), a vacuum tube(4), a detector for helium gas, a rope coupling ring(8), and a position adjusting rope(7). The helium balloon has a double layered structure of helium gas(2) and air(3). The helium gas detecting probe sucks ambient air. The vacuum tube is connected to the helium gas detecting probe and the detector for the helium gas. The detector for the helium gas detects helium gas in the air. The rope coupling rings are attached on the outer circumference of an outer balloon(1b).
摘要翻译：目的：提供一种用于LNG储罐的泄漏检测装置，用于通过将氦气检测探头转移到物体部分，由于氦气球的氦气泄漏而从LNG储罐内的污染获得检查区的检查条件，以被检查。构成：用于LNG储罐的泄漏检测装置包括氦气球，氦气检测探针（12），真空管（4），氦气检测器，绳索联接环（8）和位置调节绳索（7）。氦气球具有氦气（2）和空气（3）的双层结构。氦气检测探头吸入环境空气。真空管连接到氦气检测探头和氦气检测器。用于氦气的检测器检测空气中的氦气。绳索联接环安装在外球囊（1b）的外圆周上。

4. 发明授权

KR100951772B1 ＬＮＧ 저장탱크의 누설검사 장치 有权
标题翻译：液化天然气泄漏检测设备
公开(公告)号：KR100951772B1
公开(公告)日：2010-04-08
申请号：KR1020080081955
申请日：2008-08-21
申请人： 주식회사 디섹
发明人： 김동섭 , 양현중
IPC分类号： F17C13/02 , F17C1/00
摘要： 본 발명은 지상 또는 LNG 선박에서 사용되고 있는 LNG 저장탱크에서 LNG 가스가 누설되는 경우에 해당 누설부위를 찾아서 유지보수 하기 위한 유지보수의 단계 즉 수리단계에서의 누설검사에 필요한 누설검사 장치에 관한 것으로서, LNG 저장탱크 내의 기존 접근 불가능 구역을 별도의 족장 설치 없이도 검사할 수 있도록 헬륨가스 검출용 프로브를 검사대상 구역까지 이동시켜 줌과 동시에 이를 사용함에 있어서 발생할 수 있는 헬륨풍선의 헬륨가스 누설로 인한 LNG 저장탱크 내의 오염으로부터 검사구역의 검사조건을 안정적으로 확보해 주는 역할을 하는 LNG 저장탱크의 누설검사 장치에 관한 것이다.
LNG, LNG 저장탱크, 헬륨가스, 누설검사

5. 发明授权

KR100931794B1 ＬＮＧ 저장탱크의 누설검사 방법 有权
标题翻译： LNG罐泄漏测试方法
公开(公告)号：KR100931794B1
公开(公告)日：2009-12-14
申请号：KR1020080081954
申请日：2008-08-21
申请人： 주식회사 디섹
发明人： 김동섭 , 양현중
IPC分类号： G01M3/32 , G01M3/26 , G01M3/16 , G01M3/00
摘要： PURPOSE: A leak test method of an LNG storage tank is provided to steadily secure the test condition of an inspection zone from contamination within the LNG storage tank due to helium gas leakage. CONSTITUTION: A leak test method of an LNG storage tank comprises following steps. The state, structure, capacity, and use life of the LNG storage tank are grasped. Whether peripheral components connected to the LNG storage tank can be used or not, and gas perception and temperature measurement data measured during operation are confirmed. A gateway is opened to come in and out the LNG storage tank. Air(3) inside the LNG storage tank is ventilated. A temporally pipe is installed to supply nitrogen gas to the LNG storage tank and connect an exhaust line and a leak detection device. The nitrogen gas and the dry air are injected into the first and second insulation sections of the LNG storage tank and LNG remaining in the first and second insulation sections is discharged. Vacuum is formed on the first and second insulation sections of the LNG storage tank using a vacuum pump. The helium gas(2) is injected into the first and second insulation sections to the decided pressure condition over atmospheric pressure. Inside the LNG storage tank, visual inspection and voiceless sound test are performed.
摘要翻译：目的：提供LNG储罐的泄漏测试方法，以稳定地确保检查区的测试条件不受氦气泄漏造成的LNG储罐内的污染。构成：LNG储罐的泄漏试验方法包括以下步骤。掌握LNG储罐的状态，结构，容量和使用寿命。是否可以使用连接到LNG储罐的外围部件，并确认在运行期间测量的气体感知和温度测量数据。打开通道进出LNG储罐。 LNG储罐内的空气（3）通风。安装时间管道以向LNG储罐供应氮气并连接排气管线和泄漏检测装置。将氮气和干燥空气注入到LNG储罐的第一绝缘部分和第二绝缘部分中，并且排出残留在第一和第二绝缘部分中的LNG。使用真空泵在LNG储罐的第一绝缘部和第二绝缘部上形成真空。将氦气（2）注入第一和第二绝缘部分至大气压下所确定的压力条件。在LNG储罐内部，进行视觉检查和无声音测试。

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