KR20200078912A - Manhole with fixing part for cryogenic media - Google Patents

Manhole with fixing part for cryogenic media Download PDF

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Publication number
KR20200078912A
KR20200078912A KR1020180168236A KR20180168236A KR20200078912A KR 20200078912 A KR20200078912 A KR 20200078912A KR 1020180168236 A KR1020180168236 A KR 1020180168236A KR 20180168236 A KR20180168236 A KR 20180168236A KR 20200078912 A KR20200078912 A KR 20200078912A
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South Korea
Prior art keywords
cryogenic
inclined surface
manhole
connection portion
fixture
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KR1020180168236A
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Korean (ko)
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KR102147648B1 (en
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구병수
정상영
조민수
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주식회사 동화엔텍
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Priority to KR1020180168236A priority Critical patent/KR102147648B1/en
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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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • 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
    • F17C3/00—Vessels not under pressure
    • F17C3/005—Underground or underwater containers or vessels
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks

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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

The present invention relates to the improvement of sealing performance of a cryogenic manhole for storing cryogenic liquefied gas or used therefor. According to the present invention, a cover part has a shape rounded upward by an internal pressure, is fastened by a bolt and has a structural strength against high pressure due to the rounded shape to minimize the thickness thereof. Also, when cryogenic liquefied gas is introduced to the inside, the deformation in a vertical direction due to heat contraction is minimized. The cryogenic manhole of the present invention comprises: a body having a first connection part to protrude outward; a cover part provided on an upper portion of the body, and formed with a second connection part being closely attached to the first connection part; and a sealing part interposed between the first and second connection parts. At least one of the first and second connection parts is formed with an outer inclined surface. In addition, a pressure induction unit including a fixture formed with an inner inclined surface corresponding to the outer inclined surface and a fastening member for coupling the fixture is further provided. Accordingly, when the cryogenic liquefied gas is introduced into the body, the first and second connection parts are contracted to closely attach the outer and inner inclined surfaces by the inner inclined surface of the fixture so as to pressurize the sealing part.

Description

밀폐성능이 향상된 초저온용 맨홀{Manhole with fixing part for cryogenic media}Manhole with fixing part for cryogenic media with improved sealing performance

본 발명은 밀폐성능이 향상된 초저온용 맨홀에 관한 것으로, 초저온 액화가스가 저장 또는 이용되는 압력용기 맨홀의 밀폐능력을 향상시킨 기술에 관한 것이다.The present invention relates to a cryogenic manhole with improved sealing performance, and to a technique for improving the sealing ability of a pressure vessel manhole in which cryogenic liquefied gas is stored or used.

최근 친환경 연료 사용 요구에 따라 액화천연가스(Liquefied Natural Gas)를운반하는 LNG 운반선에는 LNG를 연료로 사용하여 엔진을 구동하는 방식이 사용되고 있다.Recently, in accordance with the demand for environmentally friendly fuel, LNG carriers carrying liquefied natural gas are used to drive engines using LNG as fuel.

LNG 연료로 엔진을 구동하기 위해서는 LNG를 기화시켜 엔진으로 밀어줄 수 있는 고압기화기가 필요하다. 이 고압기화기는 초저온, 초고압 상태에서 운전되므로 튜브시트와 헤드부가 용접으로 결합되도록 설계, 제작된다. 하지만 튜브의 파공이나 Cleaning등의 문제로 유지보수를 위해서는 헤드를 열어 튜브와 튜브시트의 상태를 살피고 조치를 해야하지만 LNG기화기는 용접으로 제작되어있어 폭발성 LNG가 운영되는 곳의 작업제한 때문에 현장에서는 유지보수가 힘들고 유지보수를 위해 기화기를 선박에서 분리, 작업이 용이한 곳으로 이동하여 그 작업을 진행하여야 한다. 그에 따른 인력, 비용, 시간이 크게 요구되어 현장에서 고압기화기의 내부 수리를 위해서 맨홀 사용이 요구된다.In order to drive the engine with LNG fuel, a high-pressure carburetor capable of vaporizing LNG and pushing it to the engine is required. This high-pressure carburetor is operated in an ultra-low temperature and ultra-high pressure state, so it is designed and manufactured so that the tube sheet and the head are joined by welding. However, for maintenance due to problems such as tube breakage or cleaning, the head must be opened to check the condition of the tube and tube sheet, and measures must be taken, but the LNG vaporizer is manufactured by welding, so it is maintained in the field due to work restrictions in places where explosive LNG is operated. It is difficult to repair and the carburetor must be separated from the ship for maintenance and moved to a place where work is easy to proceed. Manpower is required to use the manhole for internal repair of the high-pressure carburetor in the field due to the large demands on manpower, cost, and time.

도 1은 종래의 맨홀 구성을 도시한 도로써, 도 1을 참조하면, 저장탱크(30)에 연결된 본체(20)와 본체(20) 상부에 덮개부(10)가 설치되게 된다.1 is a view showing a conventional manhole configuration, referring to FIG. 1, the main body 20 connected to the storage tank 30 and the cover portion 10 are installed on the top of the body 20.

맨홀을 사용하기 위해서는 볼트체결 방식으로 분해조립이 용이한 동시에 초저온 초고압의 운전조건에서 리크(LEAK)가 발생하지 않는 구조적 건전성 및 기밀성을 확보하는 것이 필요하다.In order to use the manhole, it is necessary to secure structural integrity and airtightness that facilitates disassembly and assembly by means of a bolted method and that does not generate leaks under ultra-low temperature and high pressure operating conditions.

KRKR 10-137189010-1371890 B1B1

본 발명은 상기의 문제를 해결하기 위한 것으로, LNG를 저장 또는 운영하는 열교환 장비의 맨홀이 내압에 대한 팽창과 초저온에 의한 수축변형이 발생하더라도 밀폐율을 유지시킬 수 있는 밀폐성능이 향상된 초저온용 맨홀을 제공하고자 한다. The present invention is to solve the above problems, the manhole of the cryogenic manhole with improved sealing performance to maintain the sealing rate even if the manhole of the heat exchange equipment for storing or operating LNG expands to internal pressure and contraction deformation due to cryogenic temperature occurs. Want to provide

상기의 과제를 해결하기 위해 본 발명은 초저온 액화가스가 저장 또는 이용되는 것으로, 외측으로 제1연결부가 돌출 형성되는 본체, 상기 본체 상부에 구비되고 상기 제1연결부와 밀착되는 제2연결부가 형성되는 덮개부, 상기 제1연결부와 상기 제2연결부 사이에 개재되는 실링부를 포함하고, 상기 제1연결부와 상기 제2연결부 중 적어도 하나 이상은 외측경사면이 형성되되, 상기 외측경사면에 대응되게 내측경사면이 형성된 고정구와, 상기 고정구를 결합하는 체결부재로 구성되는 가압유도부;가 더 구비되어, 상기 본체 내부로 초저온 액화가스 유입시 상기 제1연결부와 상기 제2연결부가 수축되면서 상기 고정구의 내측경사면에 의해 상기 외측경사면과 상기 내측경사면 사이가 밀착되어 상기 실링부를 가압하는 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀을 제공한다.In order to solve the above problems, the present invention is that cryogenic liquefied gas is stored or used, and a body in which a first connection portion protrudes to the outside, a second connection portion provided on the upper portion of the body and in close contact with the first connection portion is formed. A cover portion, including a sealing portion interposed between the first connection portion and the second connection portion, wherein at least one of the first connection portion and the second connection portion is formed with an outer inclined surface, the inner inclined surface corresponding to the outer inclined surface The formed fastener and a pressure induction part composed of a fastening member for coupling the fastener are further provided, and when the cryogenic liquefied gas flows into the main body, the first connection part and the second connection part contract as they are contracted by the inner inclined surface of the fastener. It provides a cryogenic manhole with improved sealing performance characterized in that the sealing portion is pressed against the outer inclined surface and the inner inclined surface.

여기서, 상기 제2연결부의 외측경사면은 단부로 갈수록 상향 경사지게 형성되는 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀을 제공한다.Here, the outer sloped surface of the second connection portion provides a cryogenic manhole with improved sealing performance, characterized in that it is formed to be inclined upward toward the end.

그리고, 상기 제1연결부의 외측경사면은 단부로 갈수록 하향 경사지게 형성되는 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀을 제공한다.In addition, the first inclined surface of the connection portion provides a cryogenic manhole with improved sealing performance, characterized in that it is formed to be inclined downward toward the end.

또한, 상기 고정구는, 상기 제1연결부 및 상기 제2연결부 보다 수축률이 상대적으로 작은 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀을 제공한다.In addition, the fixture provides a cryogenic manhole with improved sealing performance, characterized in that the shrinkage is relatively smaller than that of the first connection portion and the second connection portion.

게다가, 상기 덮개부는 상부로 라운드진 형상인 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀을 제공한다.In addition, the cover portion provides a cryogenic manhole with improved sealing performance, characterized in that it has a rounded shape to the top.

본 과제의 해결 수단에 제공된 구성에 의하면, 맨홀을 이루는 본체와 덮개부에서 덮개부의 형상에 의한 열수축변형을 최소화하고 또한, 초저온에 의해 본체와 덮개부 사이에 밀폐력이 떨어지는 현상을 상기 고정구의 내측경사면에 의해 상기 외측경사면과 상기 내측경사면 사이가 밀착되어 상기 실링부을 가압하여 밀폐 성능을 향상시킬 수 있는 효과를 가진다.According to the configuration provided in the solving means of the present invention, the heat shrinkage deformation due to the shape of the cover portion in the main body and the cover portion constituting the manhole is also minimized, and the phenomenon that the sealing force falls between the body and the cover portion due to the ultra-low temperature decreases the inner slope of the fixture. By having a close contact between the outer inclined surface and the inner inclined surface by pressing the sealing portion has an effect that can improve the sealing performance.

도 1은 종래의 맨홀 구성을 도시한 도이다.
도 2는 본 발명의 제1실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.
도 3은 본 발명의 제2실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.
도 4는 본 발명의 제3실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.
도 5는 본 발명의 제4실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.
도 6은 본 발명의 제5실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.1 is a view showing a conventional manhole configuration.
Figure 2 is a cross-sectional view of the construction of the cryogenic manhole with improved sealing performance according to the first embodiment of the present invention.
Figure 3 is a cross-sectional view of the construction of the cryogenic manhole with improved sealing performance according to the second embodiment of the present invention.
Figure 4 is a cross-sectional view of the construction of the cryogenic manhole with improved sealing performance according to the third embodiment of the present invention.
5 is a cross-sectional view of a manhole for cryogenic temperature with improved sealing performance according to a fourth embodiment of the present invention.
6 is a cross-sectional view of a manhole for cryogenic temperature with improved sealing performance according to a fifth embodiment of the present invention.

이하에서는 본 발명의 실시예를 첨부한 도면을 참조하여 설명하고자 한다. 하기 설명 및 첨부 도면에 나타난 바는 본 발명의 전반적인 이해를 위해 제시된 것이므로 본 발명의 기술적 범위가 그것들에 한정되는 것은 아니다 그리고 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 구성 및 기능에 대한 상세한 설명은 생략하기로 한다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Since the following description and the accompanying drawings are presented for the overall understanding of the present invention, the technical scope of the present invention is not limited to them, and detailed descriptions of well-known configurations and functions that may unnecessarily obscure the subject matter of the present invention are provided. It will be omitted.

도 2는 본 발명의 제1실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.Figure 2 is a cross-sectional view of the construction of the cryogenic manhole with improved sealing performance according to the first embodiment of the present invention.

도 2를 참조하면, 본 발명은 크게 본체(100), 덮개부(200), 실링부(300) 및 가압유도부(400)를 포함하여 이루어진다.Referring to FIG. 2, the present invention is largely made up of a body 100, a cover part 200, a sealing part 300, and a pressure induction part 400.

상기 본체(100)는 초저온 액화가스가 저장 또는 이용되는 것으로 외측으로 제1연결부(120)가 돌출 형성된다.The main body 100 is a cryogenic liquefied gas is stored or used, the first connection portion 120 is formed to protrude outward.

여기서 상기 본체(100)는 덮개부(200)에 결합된 받침대로 실시할 수도 있고, 그 자체가 용기로 실시할 수 있다. 본 발명에서는 본체(100)를 용기로 실시하였으며 액화된 천연가스가 열교환되는 열교환기용으로 사용할 수 있다.Here, the main body 100 may be implemented as a pedestal coupled to the cover part 200, or itself may be implemented as a container. In the present invention, the main body 100 is implemented as a container and can be used for a heat exchanger in which liquefied natural gas is exchanged.

상기 덮개부(200)는 상기 본체(100) 상부에 구비되는 것으로 상기 제1연결부(120)와 밀착되는 제2연결부(220)가 형성된다.The cover part 200 is provided on the main body 100 and is formed with a second connection part 220 in close contact with the first connection part 120.

여기서, 상기 덮개부(200)는 상부로 라운드진 형상인 것을 특징으로 하여 고압에 구조적 강점을 가지고, 두께를 최소화하여 내부로 초저온 액화가스 유입시 수축에 의한 수직방향으로 변형량을 최소가 되게 한다.Here, the cover portion 200 has a structural strength at high pressure, characterized in that it has a rounded shape to the top, minimizes the thickness to minimize the amount of deformation in the vertical direction due to shrinkage when the cryogenic liquefied gas flows into the interior.

상기 실링부(300)는 상기 제1연결부(120)와 상기 제1연결부(120)와 상기 제2연결부(220) 사이에 개재되어 틈새를 밀폐할 수 있다. 여기서 실링부(300)는 탄성있는 재질로 형성되는 것이 바람직하다.The sealing part 300 may be interposed between the first connection part 120 and the first connection part 120 and the second connection part 220 to seal the gap. Here, the sealing portion 300 is preferably formed of an elastic material.

다음은 상기 본체(100)와 덮개(200)의 밀폐율을 더 높일 수 있는 구성인 가압유도부(400)에 대해 설명하기로 한다.The following will be described with respect to the pressure induction unit 400, which is a configuration that can further increase the sealing ratio of the main body 100 and the cover 200.

먼저, 상기 제1연결부(120)와 상기 제2연결부(220) 중 적어도 하나 이상은 외측경사면(222)이 형성되어야 한다. 본 실시예에서는 상기 제2연결부(220)에 외측경사면(222)이 형성되게 하였다.First, at least one of the first connecting portion 120 and the second connecting portion 220 should have an outer inclined surface 222. In this embodiment, the outer slope 222 is formed on the second connecting portion 220.

상기 가압유도부(400)는 상기 외측경사면(222)에 대응되게 내측경사면(422)이 형성된 고정구(420)와, 상기 고정구(420)를 결합하는 체결부재(440)로 구성된다. 체결부재(440)는 볼트를 사용한다.The pressure induction part 400 is composed of a fastener 420 having an inner inclined surface 422 corresponding to the outer inclined surface 222 and a fastening member 440 coupling the fastener 420. The fastening member 440 uses bolts.

여기서 외측경사면은 상기 제1연결부(120)와 상기 제2연결부(220)가 상호 밀착되는 반대편을 의미하고, 내측경사면은 상기 고정구(420)가 상기 제1연결부(120) 또는 상기 제2연결부(220)에 밀착되는 면을 의미한다.Here, the outer inclined surface means the opposite side where the first connection part 120 and the second connection part 220 are in close contact with each other, and the inner inclined surface has the fastener 420 having the first connection part 120 or the second connection part ( 220) means the side in close contact with.

상기 제2연결부(220)의 외측경사면(222)은 단부로 갈수록 상향 경사지게 형성되게 하였으며, 상기 외측경사면(222)에 대응되게 상기 고정구(420)의 내측경사면(422)은 상기 제2연결부(220)의 외측경사면(222)에 대응되는 형상으로 외측으로 갈수록 하향 경사지게 형성된다. 즉, 상기 고정구(420)는 상기 제2연결부(220)를 수용하는 형태로 형성되게 된다. The outer inclined surface 222 of the second connecting portion 220 was formed to be inclined upward toward the end, and the inner inclined surface 422 of the fastener 420 corresponding to the outer inclined surface 222 is the second connecting portion 220 ) Is formed to be inclined downward toward the outside in a shape corresponding to the outer inclined surface 222. That is, the fixture 420 is formed to accommodate the second connection portion 220.

그리고, 상기 체결부재(440)는 상기 고정구(420)에서 상기 제1연결부(120) 그리고, 상기 제2연결부(220)를 관통하여 결합되게 하였다.In addition, the fastening member 440 is coupled through the first connection portion 120 and the second connection portion 220 in the fixture 420.

그래서, 가압유도부(400)에 의해 상기 제1연결부(120)와 상기 제2연결부(220)를 결합한 후 초저온 액화가스 유입 시 상기 제1연결부(120)와, 제2연결부(220)는 본체(100) 내부의 초저온 액화가스에 직접적으로 접촉되고, 상기 고정구(420)는 외부에 형성되어 있어 상온에 노출되어 수축률이 다르게 된다. 즉, 상기 제1연결부(120)와, 제2연결부(220)는 상기 고정구(420) 보다 수축률이 더 많아지게 된다.So, after the first connection portion 120 and the second connection portion 220 are combined by the pressurized induction portion 400, the first connection portion 120 and the second connection portion 220 are the main body ( 100) It is in direct contact with the cryogenic liquefied gas inside, and the fastener 420 is formed on the outside, so that the shrinkage rate is different due to exposure to room temperature. That is, the first connection portion 120 and the second connection portion 220 have a greater shrinkage rate than the fixture 420.

결국, 상기 본체(100) 내부로 초저온 액화가스 유입시 상기 제1연결부(120)와 상기 제2연결부(220)가 수축되면서 상기 제2연결부(220)는 상기 내측경사면(422)을 따라 외측경사면(222)이 이동되면서 상기 내측경사면(422)과 외측경사면(222) 사이가 밀착되게 되는 것이다.As a result, when the cryogenic liquefied gas is introduced into the main body 100, the first connecting portion 120 and the second connecting portion 220 are contracted, and the second connecting portion 220 has an outer inclined surface along the inner inclined surface 422. As the 222 is moved, the inner inclined surface 422 and the outer inclined surface 222 are in close contact.

한편, 상기 고정구(420)를 상기 제1연결부(120) 및 상기 제2연결부(220) 보다 수축률이 작은 재질로 형성하여 상기 내측경사면(422)과 외측경사면(222) 사이를 더 밀착되게 할 수도 있다.On the other hand, the fixture 420 may be formed of a material having a smaller shrinkage than the first connection portion 120 and the second connection portion 220 to make the inner sloped surface 422 and the outer sloped surface 222 closer to each other. have.

도 3은 본 발명의 제2실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.Figure 3 is a cross-sectional view of the construction of the cryogenic manhole with improved sealing performance according to the second embodiment of the present invention.

도 3에서는, 앞서 제1실시예와 같이 그 구성이 본체(100), 덮개부(200), 실링부(300) 및 가압유도부(400)로 이루어지는 것은 동일하고, 덮개부(200)의 제2연결부(220)가 단차지게 형성하였으며 단차진 면이 외측경사면(222)으로 형성하였다. 그리고, 가압유도부(400)의 고정구(420)가 단차진 면에 대응되게 내측경사면(422)이 형성되게 하여 실시한 것이다.In FIG. 3, as in the first embodiment, the configuration is the same as that of the main body 100, the cover part 200, the sealing part 300, and the pressure induction part 400, and the second part of the cover part 200 The connecting portion 220 is formed to be stepped, and the stepped surface is formed as an outer inclined surface 222. Then, the inner side of the inclined surface 422 is formed so that the fixture 420 of the pressurized induction part 400 corresponds to the stepped surface.

도 4는 본 발명의 제3실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.Figure 4 is a cross-sectional view of the construction of the cryogenic manhole with improved sealing performance according to the third embodiment of the present invention.

도 4에서는, 도 3의 실시예와 동일하게 그 구성이 본체(100), 덮개부(200), 실링부(300) 및 가압유도부(400)로 이루어지고, 체결부재(440)는 고정구(420)와 제1연결부(120)를 결합하여 고정구(420)를 고정할 수 있도록 실시한 것이다.In FIG. 4, as in the embodiment of FIG. 3, the configuration is composed of the main body 100, the cover part 200, the sealing part 300, and the pressure induction part 400, and the fastening member 440 is a fixture 420 ) And the first connection unit 120 are combined to fix the fixture 420.

도 5는 본 발명의 제4실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.5 is a cross-sectional view of a manhole for cryogenic temperature with improved sealing performance according to a fourth embodiment of the present invention.

도 5에서는 그 구성이 본체(100), 덮개부(200), 실링부(300) 및 가압유도부(400)로 이루어지고 가압유도부(400)의 고정구(420,430)가 한 쌍으로 형성되어 제1연결부(120)와 제2연결부(220)에 각각 밀착되도록 실시한 것이다. 여기서 제1연결부(120)에는 외측경사면(122)가 형성되고 제2연결부(220)에는 외측경사면(222)이 각각 형성되게 된다.5, the configuration is composed of a main body 100, a cover part 200, a sealing part 300, and a pressurized induction part 400, and the fasteners 420 and 430 of the pressurized induction part 400 are formed in a pair to form a first connection part. It is carried out to be in close contact with the 120 and the second connecting portion 220, respectively. Here, an outer inclined surface 122 is formed on the first connecting portion 120 and an outer inclined surface 222 is formed on the second connecting portion 220, respectively.

여기서, 상기 제1연결부(120)의 외측경사면(122)은 단부로 갈수록 하향 경사지게 형성되게 하고, 이와 대응되게 고정구(430)의 내측경사면(432)이 형성된다. 그래서, 초저온 액화가스에 의해 상기 제1연결부(120)가 압축시 외측경사면(122)가 고정구(420)의 내측경사면(424)은 틈새가 최소화 되게 된다. 물론, 앞서 서술한 에와 같이 상기 제2연결부(220)는 고정구(420)와 밀착되어 틈새가 최소화 되게 된다.Here, the outer inclined surface 122 of the first connecting portion 120 is formed to be inclined downward toward the end, and correspondingly, the inner inclined surface 432 of the fixture 430 is formed. So, when the first connection portion 120 is compressed by the cryogenic liquefied gas, the gap between the outer inclined surface 122 and the inner inclined surface 424 of the fixture 420 is minimized. Of course, as described above, the second connection part 220 is in close contact with the fixture 420 to minimize the gap.

도 6은 본 발명의 제5실시예에 따른 밀폐성능이 향상된 초저온용 맨홀의 구성 단면도이다.6 is a cross-sectional view of a manhole for cryogenic temperature with improved sealing performance according to a fifth embodiment of the present invention.

도 6은 도 5와 동일하게 고정구(420,430)가 한 쌍으로 구비되게 되고, 체결부재(440)가 고정구(420,430)들을 관통하여 결합되어 고정할 수 있도록 실시한 것이다.FIG. 6 shows that the fasteners 420 and 430 are provided in a pair as in FIG. 5, and the fastening member 440 is coupled through the fasteners 420 and 430 to be fixed.

이상에서 설명한 본 발명은 상기한 실시예에 한정되지 않고, 이하의 특허청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양하게 변경하여 실시할 수 있는 범위까지 특허청구범위의 보호범위에 속하는 것으로 보아야 할 것이다.The present invention described above is not limited to the above-described embodiments, and can be variously changed by anyone having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims below. It should be regarded as belonging to the protection scope of the claims to the extent possible.

100: 본체
120: 제1연결부
200: 덮개부
220: 제2연결부
300: 실링부
400: 가압유도부
420,430: 고정구
440: 체결부재100: main body
120: first connection
200: cover
220: second connection
300: sealing portion
400: pressurized induction part
420,430: Fixture
440: fastening member

Claims (5)

초저온 액화가스가 저장 또는 이용되는 것으로, 외측으로 제1연결부가 돌출 형성되는 본체, 상기 본체 상부에 구비되고 상기 제1연결부와 밀착되는 제2연결부가 형성되는 덮개부, 상기 제1연결부와 상기 제2연결부 사이에 개재되는 실링부를 포함하고,
상기 제1연결부와 상기 제2연결부 중 적어도 하나 이상은 외측경사면이 형성되되,
상기 외측경사면에 대응되게 내측경사면이 형성된 고정구와, 상기 고정구를 결합하는 체결부재로 구성되는 가압유도부;가 더 구비되어,
상기 본체 내부로 초저온 액화가스 유입시 상기 제1연결부와 상기 제2연결부가 수축되면서 상기 고정구의 내측경사면에 의해 상기 외측경사면과 상기 내측경사면 사이가 밀착되어 상기 실링부를 가압하는 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀.The cryogenic liquefied gas is stored or used, a body in which a first connection portion protrudes to the outside, a cover portion provided on the upper portion of the body and a second connection portion in close contact with the first connection portion, the first connection portion and the agent 2 includes a sealing portion interposed between the connecting portion,
At least one of the first connection portion and the second connection portion is formed with an outer inclined surface,
It is further provided with a fastener having an inner inclined surface corresponding to the outer inclined surface and a fastening member formed of a fastening member for coupling the fastener;
When the cryogenic liquefied gas is introduced into the main body, the first connection portion and the second connection portion are contracted, and the sealing performance is characterized by pressing the sealing portion in close contact between the outer and inner slope surfaces by the inner slope of the fixture. This improved cryogenic manhole. 제1항에 있어서,
상기 제2연결부의 외측경사면은 단부로 갈수록 상향 경사지게 형성되는 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀.According to claim 1,
Cryogenic manhole with improved sealing performance, characterized in that the second inclined surface of the second connecting portion is inclined upward toward the end. 제1항에 있어서,
상기 제1연결부의 외측경사면은 단부로 갈수록 하향 경사지게 형성되는 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀.According to claim 1,
Cryogenic manhole with improved sealing performance, characterized in that the first inclined surface of the first connection portion is formed to be inclined downward toward the end. 제1항에 있어서,
상기 고정구는,
상기 제1연결부 및 상기 제2연결부 보다 수축률이 상대적으로 작은 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀.According to claim 1,
The fixture,
Cryogenic manhole with improved sealing performance, characterized in that the shrinkage rate is relatively smaller than that of the first connection portion and the second connection portion. 제1항에 있어서,
상기 덮개부는 상부로 라운드진 형상인 것을 특징으로 하는 밀폐성능이 향상된 초저온용 맨홀.According to claim 1,
The cover portion is a cryogenic manhole with improved sealing performance, characterized in that the rounded shape to the top.
KR1020180168236A 2018-12-24 2018-12-24 Manhole with fixing part for cryogenic media KR102147648B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101371890B1 (en) 2013-04-05 2014-03-07 현대중공업 주식회사 A fuel gas supply system of liquefied natural gas
JP2017100102A (en) * 2015-12-04 2017-06-08 株式会社ＮｅｊｉＬａｗ Fastening structure of pressure chamber
KR20180048317A (en) * 2016-10-31 2018-05-10 카와사키 주코교 카부시키 카이샤 Tank cover for vessels and vessel provided with the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101371890B1 (en) 2013-04-05 2014-03-07 현대중공업 주식회사 A fuel gas supply system of liquefied natural gas
JP2017100102A (en) * 2015-12-04 2017-06-08 株式会社ＮｅｊｉＬａｗ Fastening structure of pressure chamber
KR20180048317A (en) * 2016-10-31 2018-05-10 카와사키 주코교 카부시키 카이샤 Tank cover for vessels and vessel provided with the same

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