CN104728595A - LNG fuel tank - Google Patents
LNG fuel tank Download PDFInfo
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- CN104728595A CN104728595A CN201510149058.7A CN201510149058A CN104728595A CN 104728595 A CN104728595 A CN 104728595A CN 201510149058 A CN201510149058 A CN 201510149058A CN 104728595 A CN104728595 A CN 104728595A
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Abstract
The application discloses an LNG fuel tank. The LNG fuel tank comprises a shell, a liner, a tank room and a liquid-phase pipe, wherein the liner is positioned in the shell; an interlayer space is formed between the liner and the shell; the tank room is fixed at the outer side of the shell; the liquid-phase pipe extends into the interlayer space, one end of the liquid-phase pipe is communicated with a liquid taking opening of the liner and the other end of the liquid-phase pipe is communicated in the tank room; the liquid-phase pipe comprises an inner pipe and an outer pipe at the outer side of the inner pipe in a sheathing manner; an interval space which is sealed and is independent from the interlayer space is formed between the inner pipe and the outer pipe. The LNG fuel tank disclosed by the application has the advantages that the liquid-phase pipeline is of a double-wall pipeline structure and separates a double-wall pipe interlayer from an equipment interlayer, so that LNG liquid can not leak into the equipment interlayer under the extreme accidental working condition of leakage of the inner pipe, the leakage from the inner pipe into the equipment interlayer is eliminated and the potential safety hazards such as rapid increase of the interlayer pressure are avoided.
Description
Technical field
The application relates to a kind of LNG peculiar to vessel (LNG Liquefied natural gas) fuel pot, particularly relates to a kind of LNG fuel tank with flameproof apparatus.
Background technique
Shown in ginseng Fig. 1 and Fig. 2, in prior art, LNG fuel tank equipment peculiar to vessel is horizontal double shells container, and tank body main structure is made up of inner bag 11, shell 12, pipeline (interlayer pipeline and tank room in pipeline control system), support, saddle 13, tank room 14 etc.Inner bag storage temperature is approximately the LNG of-162 °, and between inner bag and shell, (interlayer) adopts thermoinsulation material to be incubated, and is positioned at below interlayer and is provided with two liquid-phase tubes 15 (bottom liquid phases pipe and level meter liquid-phase tube).The liquid-phase tube of this equipment interlayer inside is single tube, and interior pipe is wrapped with sheathing paper, and is evacuated by the interlayer of equipment and is incubated, and just brings into use double wall pipe structure (double wall pipe interlayer is communicated with tank body interlayer) from outer right end socket outlet port.
The shortcoming of technique scheme is: due to factors such as long-term fatigues, there is the probability that liquid-phase tube leaks, once leak, the LNG liquid that so temperature is about-162 ° will leak in equipment interlayer from liquid-phase tube, interlayer pressure is sharply raised, thus vacuum is destroyed, a large amount of loss of LNG fuel, the flameproof apparatus explosion of equipment, tank intra-atrial pressure power sharply raises.
When using traditional inner bag to liquid pipe structure in tank room, liquid-phase tube also exists the risk of leakage, not only there is larger potential safety hazard, and boats and ships likely cast anchor in ocean or rivers, makes the benefit of client greatly impaired.So this structure is unreasonable, need to improve.
Summary of the invention
The object of the present invention is to provide a kind of LNG fuel tank, to overcome deficiency of the prior art.
For achieving the above object, the invention provides following technological scheme:
The embodiment of the present application discloses a kind of LNG fuel tank, comprise shell, inner bag, tank room and liquid-phase tube, described inner bag is positioned at described shell, mezzanine space is formed between described inner bag and shell, described tank room is fixed on the outside of shell, described liquid-phase tube extends in described mezzanine space, and its one end is communicated in the liquid taking port of described inner bag.The other end is communicated in described tank room, described liquid-phase tube comprises bottom liquid phases pipe and level meter liquid-phase tube, the first outer tube that described bottom liquid phases pipe comprises pipe in first and is sheathed in described first outside pipe, formed between pipe with the first outer tube in described first Packed and with described mezzanine space independently the first clearance space mutually; Described level meter liquid-phase tube comprises in second the second outer tube managed and be sheathed in described second outside pipe, formed between pipe with the second outer tube in described second Packed and with described mezzanine space independently the second clearance space mutually, described first outer tube and the second outer tube at least extend between described inner bag and the sidewall of shell.
Preferably, in above-mentioned LNG fuel tank, described first clearance space and/or the second clearance space are vacuum cavity.
Preferably, in above-mentioned LNG fuel tank, in described first, in pipe and/or second, the outside of pipe is coated with sheathing paper.
Preferably, in above-mentioned LNG fuel tank, described first clearance space and the second clearance space are communicated in same flameproof apparatus, described flameproof apparatus has a through cavity, one end of this cavity is communicated in described first clearance space and the second clearance space respectively, the other end is communicated with outside air, described cavity comprises first cavity with the first diameter and second cavity with Second bobbin diameter, described first diameter is less than described Second bobbin diameter, described first cavity is near described liquid-phase tube, an Explosion proof joint is provided with in described first cavity, seal between the inwall of this Explosion proof joint and described first cavity and fit.
Further, in above-mentioned LNG fuel tank, described second cavity internal fixtion has a disposable box.
Preferably, in above-mentioned LNG fuel tank, described first clearance space and the second clearance space are communicated with a flameproof apparatus respectively, described flameproof apparatus has a through cavity, one end of this cavity is communicated in described first clearance space and the second clearance space respectively, the other end is communicated with outside air, described cavity comprises first cavity with the first diameter and second cavity with Second bobbin diameter, described first diameter is less than described Second bobbin diameter, described first cavity is near described liquid-phase tube, an Explosion proof joint is provided with in described first cavity, seal between the inwall of this Explosion proof joint and described first cavity and fit.
Further, in above-mentioned LNG fuel tank, described second cavity internal fixtion has a disposable box.
Compared with prior art, the invention has the advantages that:
1), liquid pipe is double walled ducting structure, and double wall pipe interlayer and equipment interlayer are separated, under ensureing the extreme accidental operating mode of leaking at interior pipe, LNG liquid does not leak in equipment interlayer, eliminate in interior pipe and leak in equipment interlayer, the potential safety hazard (not comprising tank intra-atrial pressure power sharply to raise) interlayer pressure sharply being raised etc.
2), the clearance space of liquid phase double wall pipe is communicated with flameproof apparatus, double wall pipe interlayer is due to after interior pipe leak pressure rising, Explosion proof joint in flameproof apparatus is ejected, top is to the inner disposable box (effect of disposable box: avoid Explosion proof joint own mobile in pipeline, thus block pipeline), leak the gas produced and drain into open air by by the emptying house steward in pipe-line system, under ensure that the extreme accidental operating mode of leaking at interior pipe, open air will be drained into by flameproof apparatus and emptying house steward owing to leaking the gas produced, the potential safety hazard eliminating that tank intra-atrial pressure power sharply raises etc.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1 shows that the structural representation of LNG fuel tank in prior art;
Figure 2 shows that the structure for amplifying schematic diagram of liquid-phase tube in prior art;
Figure 3 shows that the structural representation of LNG fuel tank in the specific embodiment of the invention;
Figure 4 shows that the structure for amplifying schematic diagram of liquid-phase tube in the specific embodiment of the invention;
Figure 5 shows that the structure for amplifying schematic diagram of flameproof apparatus in the specific embodiment of the invention.
Embodiment
In the embodiment of the present invention, bottom liquid phases pipe and level meter liquid-phase tube two liquid-phase tubes are double wall pipe structure, namely be made up of interior pipe (LNG medium is walked in the inside) and outer tube, from inner bag liquid taking port, up to tank room, (tank room is confined space, the inside is pipeline control system) valve place in pipe-line system, interlayer between two pipes needs to vacuumize, thus plays heat insulation effect.
Particularly, first bottom liquid phases pipe and level meter liquid-phase tube are drawn from the liquid taking port of inner bag, by mezzanine space, enter tank room inner, double wall pipe end is connected with the valve of liquid phase pipeline in tank room, is sealed by the shrouding of valve or U-shaped shrouding.In double wall pipe, pipe is wrapped with sheathing paper, and the interlayer (double wall pipe interlayer is not communicated with tank body interlayer) between two pipes is evacuated, effectively can be incubated outside protruded tube line like this, thus reduce the loss of liquid, and after interior pipe can be made to leak, liquid does not directly enter the interlayer (space between inner bag and shell) of tank body, avoids equipment vacuum to lose, and substantially increases Economy when product uses and Security.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be described in detail the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, belongs to the scope of protection of the invention.
Shown in ginseng Fig. 3 and 4, LNG fuel tank comprises shell 21, inner bag 22, tank room 23 and liquid-phase tube 24, inner bag 22 is positioned at shell 21, mezzanine space 25 is formed between inner bag 22 and shell 21, tank room 23 is fixed on the outside of shell 21, liquid-phase tube 24 extends in mezzanine space, and its one end is communicated in the liquid taking port 221 of inner bag.The other end is communicated in tank room 23, liquid-phase tube 24 comprises bottom liquid phases pipe 241 and level meter liquid-phase tube 242, the first outer tube that bottom liquid phases pipe 241 comprises pipe in first and is sheathed in first outside pipe, formed between pipe with the first outer tube in first Packed and with mezzanine space independently the first clearance space mutually; Level meter liquid-phase tube 242 comprises in second the second outer tube managed and be sheathed in second outside pipe, formed between pipe with the second outer tube in second Packed and with mezzanine space independently the second clearance space mutually, the first outer tube and the second outer tube at least extend between inner bag and the sidewall of shell.
In this technological scheme, liquid pipe is double walled ducting structure, and double wall pipe interlayer and equipment interlayer are separated, under ensureing the extreme accidental operating mode of leaking at interior pipe, LNG liquid does not leak in equipment interlayer, eliminate in interior pipe and leak in equipment interlayer, the potential safety hazard (not comprising tank intra-atrial pressure power sharply to raise) interlayer pressure sharply being raised etc.
Further, the first clearance space and/or the second clearance space are vacuum cavity; In first, in pipe and/or second, the outside of pipe is coated with sheathing paper.
In this technological scheme, first clearance space and the second clearance space vacuumize, and sheathing paper is coated with outside interior pipe, heat insulation effect can be played, thus reduce the loss of liquid, and after interior pipe can be made to leak, liquid does not directly enter the interlayer (space between inner bag and shell) of tank body, avoid equipment vacuum to lose, substantially increase Economy when product uses and Security.
Further, shown in ginseng Fig. 5, first clearance space and the second clearance space are communicated in same flameproof apparatus 26, flameproof apparatus has a through cavity 261, one end of this cavity is communicated in the first clearance space and the second clearance space respectively, the other end 262 is communicated with outside air, cavity comprises first cavity with the first diameter and second cavity with Second bobbin diameter, first diameter is less than Second bobbin diameter, first cavity is near liquid-phase tube, be provided with an Explosion proof joint 263 in first cavity, seal between the inwall of this Explosion proof joint and the first cavity and fit.Second cavity internal fixtion has a disposable box 264.
In this technological scheme, double wall pipe interlayer is due to after interior pipe leak pressure rising, Explosion proof joint in flameproof apparatus is ejected, top is to the inner disposable box (effect of disposable box: avoid Explosion proof joint own mobile in pipeline, thus block pipeline), leak the gas produced and drain into open air by by the emptying house steward in pipe-line system, under ensure that the extreme accidental operating mode of leaking at interior pipe, open air will be drained into by flameproof apparatus and emptying house steward, the potential safety hazard eliminating that tank intra-atrial pressure power sharply raises etc. owing to leaking the gas produced.
It should be noted that in other embodiments, the first clearance space and the second clearance space can also be communicated in an independently flameproof apparatus respectively.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or control panel, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The above is only the embodiment of the application; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the protection domain of the application.
Claims (7)
1. a LNG fuel tank, comprise shell, inner bag, tank room and liquid-phase tube, described inner bag is positioned at described shell, mezzanine space is formed between described inner bag and shell, described tank room is fixed on the outside of shell, described liquid-phase tube extends in described mezzanine space, its one end is communicated in the liquid taking port of described inner bag, the other end is communicated in described tank room, it is characterized in that: described liquid-phase tube comprises bottom liquid phases pipe and level meter liquid-phase tube, described bottom liquid phases pipe comprises in first the first outer tube managed and be sheathed in described first outside pipe, formed between pipe with the first outer tube in described first Packed and with described mezzanine space independently the first clearance space mutually, described level meter liquid-phase tube comprises in second the second outer tube managed and be sheathed in described second outside pipe, formed between pipe with the second outer tube in described second Packed and with described mezzanine space independently the second clearance space mutually, described first outer tube and the second outer tube at least extend between described inner bag and the sidewall of shell.
2. LNG fuel tank according to claim 1, is characterized in that: described first clearance space and/or the second clearance space are vacuum cavity.
3. LNG fuel tank according to claim 1, is characterized in that: in described first, in pipe and/or second, the outside of pipe is coated with sheathing paper.
4. LNG fuel tank according to claim 1, it is characterized in that: described first clearance space and the second clearance space are communicated in same flameproof apparatus, described flameproof apparatus has a through cavity, one end of this cavity is communicated in described first clearance space and the second clearance space respectively, the other end is communicated with outside air, described cavity comprises first cavity with the first diameter and second cavity with Second bobbin diameter, described first diameter is less than described Second bobbin diameter, described first cavity is near described liquid-phase tube, an Explosion proof joint is provided with in described first cavity, seal between the inwall of this Explosion proof joint and described first cavity and fit.
5. LNG fuel tank according to claim 4, is characterized in that: described second cavity internal fixtion has a disposable box.
6. LNG fuel tank according to claim 1, it is characterized in that: described first clearance space and the second clearance space are communicated with a flameproof apparatus respectively, described flameproof apparatus has a through cavity, one end of this cavity is communicated in described first clearance space and the second clearance space respectively, the other end is communicated with outside air, described cavity comprises first cavity with the first diameter and second cavity with Second bobbin diameter, described first diameter is less than described Second bobbin diameter, described first cavity is near described liquid-phase tube, an Explosion proof joint is provided with in described first cavity, seal between the inwall of this Explosion proof joint and described first cavity and fit.
7. LNG fuel tank according to claim 6, is characterized in that: described second cavity internal fixtion has a disposable box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149058.7A CN104728595B (en) | 2015-03-31 | 2015-03-31 | A kind of LNG fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149058.7A CN104728595B (en) | 2015-03-31 | 2015-03-31 | A kind of LNG fuel tank |
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| Publication Number | Publication Date |
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| CN104728595A true CN104728595A (en) | 2015-06-24 |
| CN104728595B CN104728595B (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510149058.7A Active CN104728595B (en) | 2015-03-31 | 2015-03-31 | A kind of LNG fuel tank |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822898A (en) * | 2016-04-07 | 2016-08-03 | 中国寰球工程公司 | LNG leakage collecting system and leakage collecting method thereof |
| CN106641691A (en) * | 2015-10-29 | 2017-05-10 | 中国国际海运集装箱(集团)股份有限公司 | Skid-mounted LNG storage tank and skid-mounted LNG filling station equipped with skid-mounted LNG storage tank |
| CN107389291A (en) * | 2017-08-29 | 2017-11-24 | 沪东中华造船(集团)有限公司 | A kind of LNG fuel ship combustion gas double-wall pipe breakage simulation box and its analogy method |
| CN111237629A (en) * | 2018-11-28 | 2020-06-05 | 张家港中集圣达因低温装备有限公司 | Marine natural gas storage tank |
| CN114981160A (en) * | 2020-02-28 | 2022-08-30 | 三菱造船株式会社 | Fuel tank and ship |
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| CN204534097U (en) * | 2015-03-31 | 2015-08-05 | 张家港富瑞特种装备股份有限公司 | A kind of LNG fuel tank |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641691A (en) * | 2015-10-29 | 2017-05-10 | 中国国际海运集装箱(集团)股份有限公司 | Skid-mounted LNG storage tank and skid-mounted LNG filling station equipped with skid-mounted LNG storage tank |
| CN105822898A (en) * | 2016-04-07 | 2016-08-03 | 中国寰球工程公司 | LNG leakage collecting system and leakage collecting method thereof |
| CN107389291A (en) * | 2017-08-29 | 2017-11-24 | 沪东中华造船(集团)有限公司 | A kind of LNG fuel ship combustion gas double-wall pipe breakage simulation box and its analogy method |
| CN111237629A (en) * | 2018-11-28 | 2020-06-05 | 张家港中集圣达因低温装备有限公司 | Marine natural gas storage tank |
| CN111237629B (en) * | 2018-11-28 | 2022-04-15 | 张家港中集圣达因低温装备有限公司 | Marine natural gas storage tank |
| CN114981160A (en) * | 2020-02-28 | 2022-08-30 | 三菱造船株式会社 | Fuel tank and ship |
| CN114981160B (en) * | 2020-02-28 | 2024-05-03 | 三菱造船株式会社 | Fuel tank and ship |
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|---|---|
| CN104728595B (en) | 2017-11-17 |
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