Insulation structure of membrane-type storage tank
A storage tank and membrane technology, which is applied in the field of heat insulation structure of plate membrane storage tanks, can solve the problems of welding complexity and low degree of automation of the first sealing wall, and achieve increased productivity, reduced relative displacement, and stable support structure effect
Pending Publication Date: 2021-06-22
DAEWOO SHIPBUILDING & MARINE ENG CO LTD
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Problems solved by technology
[0016] Due to the low degree of automation, MARK III tanks have disadvantages in terms of installation / manufacture due to the complexity of welding of the first sealing wall formed by a corrugated membrane
Method used
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[0038] Reference will now be made in detail to various embodiments, examples of which are illustrated in the accompanying drawings, in order to provide a thorough understanding of the above and other aspects, features and advantages of the invention.
[0039] Hereinafter, embodiments of the present invention will be described in detail. Throughout the specification, the same parts will be denoted by the same reference numerals.
[0040] Herein, the terms "first" and "second" are used to distinguish components that provide primary sealing or insulation to the LNG storage tank from components that provide secondary sealing or insulation to the LNG storage tank.
[0041] figure 1 is a view of the unit of the second insulation panel of the membrane storage tank according to the present invention, figure 2 is a view of the unit of the first insulation panel of the membrane tank according to the invention, and image 3is a schematic diagram of the heat insulation structure of th...
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The present invention discloses an insulation structure of a membrane-type storage tank. The present invention relates to the membrane-type storage tank comprising: a secondary insulation wall comprising a plurality of secondary insulation panels; a primary insulation wall which comprises a plurality of primary insulation panels, and which is disposed at the upper part of the secondary insulation wall; and a plurality of fixing devices provided at the upper parts of the secondary insulation panels to be coupled with the primary insulation panels, wherein the plurality of fixing devices are arranged on the center line of the secondary insulation panels in a width direction so that the movement of the fixing devices in the width direction is prevented, and the plurality of fixing devices are arranged to be spaced at equal intervals with respect to the longitudinal direction of the secondary insulation panels and slits are formed at locations spaced at equal distances in front of and behind each fixing device so as to prevent the movement of the fixing devices in the longitudinal direction, and thus the influence, caused by thermal shrinkage and hull behavior, on the fixing points of the fixing devices provided at the upper part of the secondary insulation wall is minimized.
Description
technical field [0001] The invention relates to a heat insulation structure of a membrane storage tank. More particularly, the present invention relates to an insulation structure of a plate type membrane storage tank that can minimize the influence of heat shrinkage and movement of a hull on anchor points of a fixing device provided on an upper surface of a second insulation wall. Background technique [0002] Natural gas is transported in gaseous state through land or offshore gas pipelines, or in liquid form, namely liquefied natural gas (LNG), by LNG carriers to distant destinations. LNG is obtained by cooling natural gas to a cryogenic temperature (about -163° C.), and has a volume of about 1 / 600 of gaseous natural gas. Therefore, LNG is suitable for long-distance transport by sea. [0003] Structures used to transport or store LNG, such as LNG carriers designed to transport LNG by sea to onshore consumer locations, are equipped with storage tanks (commonly referred t...
Claims
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IPC IPC(8): B63B25/16F17C3/02
CPCB63B25/16F17C3/027F17C2201/0157F17C2201/052F17C2203/0358F17C2221/033F17C2223/0161F17C2223/033F17C2270/0107B63B73/40F17C2209/22F17C13/001F17C2203/0333F17C2203/0629F17C2225/0161F17C2260/011
Inventor 千秉熙朴成祐权升慜
Owner DAEWOO SHIPBUILDING & MARINE ENG CO LTD