CN101634396A - Cold insulation device and cold insulation method of low-temperature storage tank for ship - Google Patents
Cold insulation device and cold insulation method of low-temperature storage tank for ship Download PDFInfo
- Publication number
- CN101634396A CN101634396A CN200910159859A CN200910159859A CN101634396A CN 101634396 A CN101634396 A CN 101634396A CN 200910159859 A CN200910159859 A CN 200910159859A CN 200910159859 A CN200910159859 A CN 200910159859A CN 101634396 A CN101634396 A CN 101634396A
- Authority
- CN
- China
- Prior art keywords
- air
- storage tank
- casing
- cold insulation
- ship
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a cold insulation device of a low-temperature storage tank for a ship, comprising a fan, an intake distribution main pipe, an air casing, an exhaust gathering pipe, an exhaust fan and an air cooler, wherein the air casing is arranged inside a narrow air gap space between the outer surface of a storage tank insulating layer and a ship space; the interior of the air casing is divided into a plurality of channels surrounding the storage tank; an exhaust pipe of the fan is connected with the entrance of a channel of the air casing through the intake distribution main pipe, the exit of the channel of the air casing is connected with the exhaust fan through the exhaust gathering pipe, and the exhaust fan is connected with an intake pipe of the fan through the air cooler. A combustible gas probe is arranged between the exit of the channel of the air casing and the exhaust gathering pipe. Cool air circulation is formed on the outer surface of the storage tank insulating layer, thereby reducing the evaporation rate of liquefied natural gas. The leakage state of a liquefied natural gas storage tank can be rapidly detected. The invention also discloses a cold insulation method of a low-temperature storage tank for a ship.
Description
Technical field
The present invention relates to a kind of annex of pressurized container, be specifically related to a kind of cold insulation device of low-temperature storage tank for ship.The invention still further relates to a kind of cold insulation method of low-temperature storage tank for ship.
Background technique
At present, be used for the seaborne floating of LNG Liquefied natural gas gasification installation (FSRU), Floating Production storage and transportation apparatus (FPSO) and liquified natural gas carrier (LNGC) (LNGC) again, all adopt storage tank to be installed in LNG Liquefied natural gas (LNG).Different with the full appearance formula storage tank that install the land, this is because the storage tank dress, does not have the second layer to contain ability aboard ship.And the preservation condition of LNG Liquefied natural gas is that conventional carbon steel can become very fragile under this temperature under low-temperature condition approximately-162 ℃.In case leak, the shell of being built by conventional carbon steel can touch and a large amount of low-temperature liquefaction rock gases, and shell may be destroyed, and therefore dangerous situation occurs.Therefore the leakage of liquefied natural gas (LNG) tank is a breakneck signal, is the omen of catastrophic failure.
In addition, when hull moves to tropical marine site, the temperature in the conventional hull space, under the sea, can reach more than 30 ℃, can reach across the sea more than 50 ℃, under such temperature conditions, the relative evaporation of LNG Liquefied natural gas is higher, causes energy consumption big thus, and LNG Liquefied natural gas is aging serious.
In from now on several years, how the use meeting of floating reliquefaction installation (FSRU), Floating Production storage and transportation apparatus (FPSO) and liquified natural gas carrier (LNGC) (LNGC) more and more widely improves the Security and the performance of storage tank, is present problem demanding prompt solution.
Summary of the invention
Technical problem to be solved by this invention provides a kind of cold insulation device of low-temperature storage tank for ship, and it can set up a protection barrier at storage tank and exterior hull space, and storage tank is carried out cold insulation.
For solving the problems of the technologies described above, the technical solution of the cold insulation device of low-temperature storage tank for ship of the present invention is:
Comprise blower, air inlet distribution header, air-casing, exhaust header, induced draft fan, air-cooler; Air-casing is arranged in the narrow air gap space between storage tank thermal insulation layer outer surface and the hull space; Be separated into many passages in the air-casing around storage tank; The air outlet tube of blower is by the inlet of air inlet distribution header connection air-casing passage, and the outlet of air-casing passage connects induced draft fan by the exhaust header, and induced draft fan connects the air intake pipe of blower by air-cooler.
Be provided with combustible gas detector between the outlet of described air-casing passage and the exhaust header.
The present invention also provides a kind of cold insulation method of low-temperature storage tank for ship, and its technical solution is:
One narrow air-casing is set between storage tank thermal insulation layer outer surface and hull space, many passages around reservoir surface are set in air-casing;
Blower is sent into the air-casing passage with air by the air inlet distribution header, forms air film in air-casing;
Induced draft fan is directed to the exhaust header with the air in the air-casing passage, and sends blower back to by air-cooler, and the air-casing passage sent into air again by blower, forms the gas circulation.
Regulate described air-cooler, the interior circuit cool air of air-casing is remained between 2～5 ℃.
The technique effect that the present invention can reach is:
The present invention forms the circulation of cool air at the outer surface of storage tank thermal insulation layer, and the temperature maintenance that makes storage tank thermal insulation layer outer surface can reduce the relative evaporation of LNG Liquefied natural gas at 2～5 ℃ temperature constant state.And the evaporation of rock gas need be compressed and liquefaction again, and relative evaporation reduces, and can reduce energy consumption.Can reduce simultaneously the aging of the interior LNG Liquefied natural gas of storage tank.
Cool air of the present invention is in cyclic process, and entering can flow through before the exhaust header is equipped with the pipeline section of combustible gas detector, can detect the rock gas of tank leak.The present invention is separated into a plurality of passages with cool air circuit air-casing, and cool air is flowed at air-casing passage interior orientation, thereby can fast and effeciently detect the leakage of liquefied natural gas (LNG) tank.Detect little leakage as early as possible, so that in time take counter-measure, the generation that is against any misfortune.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is the cold insulation schematic representation of apparatus of low-temperature storage tank for ship of the present invention.
Description of reference numerals among the figure:
1 is blower, and 2 are the air inlet distribution header,
3 is air-casing, and 4 are the exhaust header,
5 is induced draft fan, and 6 is air-cooler,
7 is combustible gas detector, and 8 is refrigerant.
Embodiment
As shown in Figure 1, the cold insulation device of low-temperature storage tank for ship of the present invention comprises blower 1, air inlet distribution header 2, air-casing 3, exhaust header 4, induced draft fan 5, air-cooler 6;
The air outlet tube of blower 1 connects the inlet of many passages in the air-casing 3 by air inlet distribution header 2, the outlet of these many passages connects induced draft fan 5 by exhaust header 4, induced draft fan 5 forms the loop of air by the air intake pipe of air-cooler 6 connection blowers 1.Be provided with combustible gas detector 7 between the outlet of air-casing passage and the exhaust header 4.Induced draft fan 5 can form negative pressure in exhaust header 4.Air-casing 3 is arranged in the narrow air gap space between storage tank thermal insulation layer outer surface and the hull space.
Blower 1 is sent into many passages in the air-casing 3, formation air film air-casing 3 in the air of barotropic state by air inlet distribution header 2.Air in the passage flow to exhaust header 4 under the suction function of induced draft fan 5, and sends blower 1 by induced draft fan 5 back to by air-cooler 6.
During air process air-cooler 6, in air-cooler 6, under the effect of refrigerant 8, regulate air-cooler 6, air-casing 3 interior circuit cool airs are remained between 2～5 ℃.
The present invention can be used for floating LNG Liquefied natural gas (LNG) storage tank and other low-temperature storage tank for ship on gasification installation (FSRU), Floating Production storage and transportation apparatus (FPSO), the liquified natural gas carrier (LNGC) (LNGC) again.
Claims (4)
1. the cold insulation device of a low-temperature storage tank for ship is characterized in that: comprise blower, air inlet distribution header, air-casing, exhaust header, induced draft fan, air-cooler;
Air-casing is arranged in the narrow air gap space between storage tank thermal insulation layer outer surface and the hull space; Be separated into many passages in the air-casing around storage tank;
The air outlet tube of blower is by the inlet of air inlet distribution header connection air-casing passage, and the outlet of air-casing passage connects induced draft fan by the exhaust header, and induced draft fan connects the air intake pipe of blower by air-cooler.
2. the cold insulation device of low-temperature storage tank for ship according to claim 1 is characterized in that: be provided with combustible gas detector between the outlet of described air-casing passage and the exhaust header.
3. the cold insulation method of a low-temperature storage tank for ship is characterized in that:
One narrow air-casing is set between storage tank thermal insulation layer outer surface and hull space, many passages around reservoir surface are set in air-casing;
Blower is sent into the air-casing passage with air by the air inlet distribution header, forms air film in air-casing;
Induced draft fan is directed to the exhaust header with the air in the air-casing passage, and sends blower back to by air-cooler, and the air-casing passage sent into air again by blower, forms the gas circulation.
4. the cold insulation method of low-temperature storage tank for ship according to claim 3 is characterized in that: regulate described air-cooler, the interior circuit cool air of air-casing is remained between 2～5 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910159859A CN101634396A (en) | 2009-07-10 | 2009-07-10 | Cold insulation device and cold insulation method of low-temperature storage tank for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910159859A CN101634396A (en) | 2009-07-10 | 2009-07-10 | Cold insulation device and cold insulation method of low-temperature storage tank for ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101634396A true CN101634396A (en) | 2010-01-27 |
Family
ID=41593676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910159859A Pending CN101634396A (en) | 2009-07-10 | 2009-07-10 | Cold insulation device and cold insulation method of low-temperature storage tank for ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101634396A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213314A (en) * | 2010-04-01 | 2011-10-12 | 通用汽车环球科技运作有限责任公司 | Temperature regulating device for a pressure vessel |
| CN102741123A (en) * | 2010-01-29 | 2012-10-17 | 西门子公司 | Electrically driven aircraft |
| CN102840441A (en) * | 2012-09-27 | 2012-12-26 | 张家港韩中深冷科技有限公司 | Storage tank for cooling superconducting cable |
| CN102997033A (en) * | 2012-08-14 | 2013-03-27 | 刘立文 | Anti-explosive combustible liquefied gas storage tank with cooling function |
| CN103912761A (en) * | 2014-04-18 | 2014-07-09 | 大连理工大学 | LNG (liquefied natural gas) marine adjustable insulation device |
| CN103939730A (en) * | 2014-04-28 | 2014-07-23 | 杨元清 | Explosion-proof low-temperature pressure storage tank |
| CN104456819A (en) * | 2014-12-01 | 2015-03-25 | 中国海洋石油总公司 | Ventilation system used for LNG (Liquefied Natural Gas) receiving terminal |
| CN104713696A (en) * | 2015-02-04 | 2015-06-17 | 中国海洋石油总公司 | Model test method for independent C-type LNG liquid tank |
| CN105003647A (en) * | 2015-05-29 | 2015-10-28 | 张家港市顺佳隔热技术有限公司 | Anti-explosion base for pressure container |
| CN106196732A (en) * | 2016-08-01 | 2016-12-07 | 绍兴文理学院 | A kind of system heating underground low temperature storage tank surrounding soil |
| CN106764402A (en) * | 2015-11-23 | 2017-05-31 | 张家港中集圣达因低温装备有限公司 | Cryogenic media basin |
| CN109519704A (en) * | 2018-11-28 | 2019-03-26 | 天津安吉奥特科技有限公司 | A kind of LNG storage tank safety device |
-
2009
- 2009-07-10 CN CN200910159859A patent/CN101634396A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102741123A (en) * | 2010-01-29 | 2012-10-17 | 西门子公司 | Electrically driven aircraft |
| CN102213314B (en) * | 2010-04-01 | 2015-09-23 | 通用汽车环球科技运作有限责任公司 | For the temperature-adjusting device of pressurized container |
| US9347560B2 (en) | 2010-04-01 | 2016-05-24 | GM Global Technology Operations LLC | Temperature regulating device for a pressure vessel |
| CN102213314A (en) * | 2010-04-01 | 2011-10-12 | 通用汽车环球科技运作有限责任公司 | Temperature regulating device for a pressure vessel |
| CN102997033A (en) * | 2012-08-14 | 2013-03-27 | 刘立文 | Anti-explosive combustible liquefied gas storage tank with cooling function |
| CN102840441B (en) * | 2012-09-27 | 2013-12-18 | 张家港韩中深冷科技有限公司 | Storage tank for cooling superconducting cable |
| CN102840441A (en) * | 2012-09-27 | 2012-12-26 | 张家港韩中深冷科技有限公司 | Storage tank for cooling superconducting cable |
| CN103912761A (en) * | 2014-04-18 | 2014-07-09 | 大连理工大学 | LNG (liquefied natural gas) marine adjustable insulation device |
| CN103912761B (en) * | 2014-04-18 | 2016-03-02 | 大连理工大学 | A kind of LNG ship adjustable thermal insulation bed device |
| CN103939730A (en) * | 2014-04-28 | 2014-07-23 | 杨元清 | Explosion-proof low-temperature pressure storage tank |
| CN104456819A (en) * | 2014-12-01 | 2015-03-25 | 中国海洋石油总公司 | Ventilation system used for LNG (Liquefied Natural Gas) receiving terminal |
| CN104456819B (en) * | 2014-12-01 | 2017-02-22 | 中国海洋石油总公司 | Ventilation system used for LNG (Liquefied Natural Gas) receiving terminal |
| CN104713696A (en) * | 2015-02-04 | 2015-06-17 | 中国海洋石油总公司 | Model test method for independent C-type LNG liquid tank |
| CN105003647A (en) * | 2015-05-29 | 2015-10-28 | 张家港市顺佳隔热技术有限公司 | Anti-explosion base for pressure container |
| CN106764402A (en) * | 2015-11-23 | 2017-05-31 | 张家港中集圣达因低温装备有限公司 | Cryogenic media basin |
| CN106196732A (en) * | 2016-08-01 | 2016-12-07 | 绍兴文理学院 | A kind of system heating underground low temperature storage tank surrounding soil |
| CN106196732B (en) * | 2016-08-01 | 2019-03-29 | 绍兴文理学院 | A kind of system heating underground low temperature storage tank surrounding soil |
| CN109519704A (en) * | 2018-11-28 | 2019-03-26 | 天津安吉奥特科技有限公司 | A kind of LNG storage tank safety device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101634396A (en) | Cold insulation device and cold insulation method of low-temperature storage tank for ship | |
| KR101122549B1 (en) | Boil off gas control apparatus of lng carriers | |
| US10584830B2 (en) | Apparatus, system and method for the capture, utilization and sendout of latent heat in boil off gas onboard a cryogenic storage vessel | |
| CN203161377U (en) | Gas fuel supply system of marine power plant | |
| KR100356764B1 (en) | Method and device for storage and transport of liquefied natural gas | |
| CN104265512A (en) | High-pressure/low-pressure gas supply system of ship power plant | |
| KR20080113030A (en) | Continuous regasification of lng using ambient air | |
| ES2834889T3 (en) | Liquefied gas cooling procedure | |
| KR101588663B1 (en) | Device for supplying fuel gas in ships | |
| CN204227033U (en) | A kind of separated type ice chest being applicable to small liquid rock gas powered ship | |
| CN103759497A (en) | Mounting structure of small skid-mounted evaporation gas reliquefaction and recovery device for liquefied natural gas | |
| CN103615657A (en) | Natural gas transmission system of LNG power driving vessel | |
| KR100986276B1 (en) | Pipe for high-pressure fuel in LNG ship | |
| KR20140135614A (en) | An internal combustion engine, and a method of supplying such engine with gaseous fuel | |
| KR20120015402A (en) | System and method for cooling engines | |
| CN105644759A (en) | CNG (Compressed Natural Gas) transporting ship | |
| KR20100122418A (en) | Apparatus for heating cofferdam and floating marine structure having the apparatus | |
| KR102018745B1 (en) | Air Independent Propulsion System Loaded Submarine | |
| KR20180113019A (en) | Liquefied Gas Transferring Pipeline System and Gas Transferring Method for a Ship | |
| KR101953507B1 (en) | Gas storage and treatment equipment | |
| KR101834450B1 (en) | method and Air Cooling System of Gas Turbine | |
| KR101599290B1 (en) | Double Shell Liquefied Gas Vessel | |
| KR101511211B1 (en) | LNG storage tank with BOG reduction device | |
| RU151690U1 (en) | HEAT INSULATION FOR CRYOGENIC EQUIPMENT | |
| KR20160020788A (en) | Offshore Natural Gas Liquefaction And Storage Method, And Stucture Using The Same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100127 |