CN104989945A - Gas cylinder combined supporting structure used for liquefied natural gas vehicle - Google Patents
Gas cylinder combined supporting structure used for liquefied natural gas vehicle Download PDFInfo
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- CN104989945A CN104989945A CN201510401620.0A CN201510401620A CN104989945A CN 104989945 A CN104989945 A CN 104989945A CN 201510401620 A CN201510401620 A CN 201510401620A CN 104989945 A CN104989945 A CN 104989945A
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- inner bag
- supporting structure
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- axle sleeve
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Abstract
The invention discloses a gas cylinder combined supporting structure used for a liquefied natural gas vehicle. The gas cylinder combined supporting structure comprises an outer liner drum, an outer liner front shell cover and an outer liner rear shell cover matched with the outer liner front shell cover are arranged at the two ends of the outer liner drum respectively, meanwhile, an inner liner drum is arranged on the outer liner drum, and an inner liner front shell cover and an inner liner rear shell cover matched with the inner liner front shell cover are arranged at the two ends of the inner liner drum, wherein a rear shell cover supporting plate is further arranged on the outer liner rear shell cover. An annular drum is arranged on the inner liner front shell cover, a distributor is arranged on the outer liner front shell cover, and meanwhile a front end combined support is arranged between the annular drum and the distributor. An inner rear supporting shaft sleeve is arranged on the inner liner rear shell cover, a supporting shaft sleeve is arranged on the rear shell cover supporting plate, and meanwhile a rear end combined support is arranged between the inner rear supporting shaft sleeve and the supporting shaft sleeve.
Description
Technical field
The present invention relates to a kind of liquefied natural gas vehicular gas cylinder composite supporting structure.
Background technique
LNG Liquefied natural gas, as the automobile clean fuel of a new generation, has octane value high, and completely, engine life is long, and pollutant emission is significantly less than fuel-engined vehicle in burning, and the advantage such as fuel cost is low.In recent years, along with the fast development of LNG industry, the demand of domestic air contaminant treatment, LNG automobile obtains the chance of develop rapidly.Automobile as the key components and parts in LNG automobile, receives increasing concern with LNG Liquefied natural gas (LNG) gas cylinder.
LNG vehicle gas cylinder is a kind of low-temperature heat-insulation pressure container, and its structure is double-deck gas cylinder.Inner bag is used for storing the LNG Liquefied natural gas (LNG ,-162 DEG C) of low temperature liquid, and outer courage is as protective layer, and the interlayer of the two forms superthermal insulation system by vacuumizing with coated thermoinsulation material; The main approach that supporting structure between inner-outer tube is connected with outer courage and external environment as inner bag, contact-type heat transfer (i.e. heat conduction) that it is formed is main heat transfer mode, the thermal conductivity of traditional metallic support reaches 15W/ (mk) (for 304 stainless steels), and the heat transfer therefore undertaken by supporting structure can reduce the lossless storage time of LNG gas cylinder.Simultaneously the weight of fuel of its storage inside of gas cylinder and inner bag own wt are all supported by front and back and are delivered to outer courage, the vibrations be subject in vehicle travel process, inertia etc. strength all needs firmly supporting structure to bear, the fuel simultaneously stored due to cylinder liner is cryogenic liquide, material under the larger temperature difference thermal expansion change greatly, also to consider the stress of material deformation under low temperature during design.
So, developing one can make LNG Liquefied natural gas (LNG) vehicle gas cylinder (hereinafter referred to as liquefied natural gas bottle) in the thermal conductivity and support strength two of supporting structure, reach the vehicle gas cylinder composite supporting structure of reasonable balance, just becomes the problem that Professional visitors needs solution badly.
Summary of the invention
For the above-mentioned technical problem in correlation technique, the present invention proposes a kind of liquefied natural gas vehicular gas cylinder composite supporting structure, and LNG Liquefied natural gas (LNG) vehicle gas cylinder can be made in the thermal conductivity and support strength two of supporting structure to reach reasonable balance.
For realizing above-mentioned technical purpose, technological scheme of the present invention is achieved in that
A kind of liquefied natural gas vehicular gas cylinder composite supporting structure, comprise outside liner cylinder body, the two ends of described outside liner cylinder body are respectively equipped with the outer courage front head and outer courage rear head that match, described outside liner cylinder body is also provided with inner bag cylindrical shell simultaneously, the two ends of described inner bag cylindrical shell are also provided with the inner bag front head and inner bag rear head that match, wherein, described outer courage rear head is also provided with rear head dunnage; Described inner bag front head is provided with circular cylinder, and described outer courage front head is provided with distributor, is provided with front end composite support between described circular cylinder and described distributor simultaneously; Described inner bag rear head is provided with interior rear support axle sleeve, and described rear head dunnage is provided with outer rear support axle sleeve, is provided with rear end composite support in institute between rear support axle sleeve and described outer rear support axle sleeve simultaneously.
Further, composite support one end, described front end is connected with described distributor, and the other end of described front end composite support is connected with inner bag.
Further, one end of described rear end composite support is connected with described inner bag by described interior rear support axle sleeve, and the other end of described rear end composite support is connected in described outer courage by described outer rear support axle sleeve.
Further, described front end composite support and described rear end composite support are all fixed in described distributor, circular cylinder and interior rear support axle sleeve, outer rear support axle sleeve by locating stud.
Further, described front end composite support and rear end composite support are nonmetallic material.
Beneficial effect of the present invention: the hot-fluid supported before and after the present invention can greatly be reduced by, enable the time that the low temperature liquid fuel speed sensorless vector control in Vehicular liquefied natural gas cylinder is longer, while the potential safety hazard caused reducing natural gas cylinder inner liner pressure to continue to raise, can reduce because safety valve is frequently opened and economic loss that fuel of releasing causes; This composite supporting structure has excellent mechanical property, and its tensile strength, shear strength and impact toughness all can meet the required mechanical property requirements of Vehicular liquefied natural gas cylinder; Rear end composite supporting structure adopts plug-type bascule, and the larger stress that liquefied natural gas bottle inner bag can be avoided to produce due to its thermal expansion is at low temperatures concentrated, and greatly reduces potential safety hazard; Adopt the structure of interpolation type, can reduce weld seam quantity, improve support strength, structure is simple, easily manufactured.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, 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.
Fig. 1 is that the liquefied natural gas vehicular gas cylinder composite supporting structure master according to the embodiment of the present invention looks sectional structure schematic diagram;
Fig. 2 is the front end composite supporting structure schematic diagram according to the embodiment of the present invention;
Fig. 3 is the rear end composite supporting structure schematic diagram according to the embodiment of the present invention.
In figure:
1, outer courage front head 2, inner bag front head 3, outside liner cylinder body 4, inner bag cylindrical shell 5, outer courage rear head 6, inner bag rear head 7, rear head dunnage 8, distributor 9, locating stud 10, front end composite support 11, circular cylinder 12, interior rear support axle sleeve 13, rear end composite support 14, outer rear support axle sleeve.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described 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, belongs to the scope of protection of the invention.
As Figure 1-3, a kind of liquefied natural gas vehicular gas cylinder composite supporting structure according to the embodiment of the present invention, comprise outside liner cylinder body 3, the two ends of described outside liner cylinder body 3 are respectively equipped with the outer courage front head 1 and outer courage rear head 5 that match, described outside liner cylinder body 3 is also provided with inner bag cylindrical shell 4 simultaneously, the two ends of described inner bag cylindrical shell 4 are also provided with the inner bag front head 2 and inner bag rear head 6 that match, wherein, described outer courage rear head 5 are also provided with rear head dunnage 7; Described inner bag front head 2 is provided with circular cylinder 11, and described outer courage front head 1 is provided with distributor 8, is provided with front end composite support 10 between described circular cylinder 11 and described distributor 8 simultaneously; Described inner bag rear head 6 is provided with interior rear support axle sleeve 12, and described rear head dunnage 7 is provided with outer rear support axle sleeve 14, is provided with rear end composite support 13 in institute between rear support axle sleeve 12 and described outer rear support axle sleeve 14 simultaneously.
In one embodiment, composite support 10 one end, described front end is connected with described distributor 8, and the other end of described front end composite support 10 is connected with inner bag.
In one embodiment, one end of described rear end composite support 13 is connected with described inner bag by described interior rear support axle sleeve 12, and the other end of described rear end composite support 13 is connected in described outer courage by described outer rear support axle sleeve 14.
In one embodiment, described front end composite support 10 and described rear end composite support 13 are all fixed in described distributor 8, circular cylinder 11 and interior rear support axle sleeve 12, outer rear support axle sleeve 14 by locating stud 9.
In one embodiment, described front end composite support 10 and rear end composite support 13 are nonmetallic material.
Conveniently understand technique scheme of the present invention, below by way of in concrete usage mode, technique scheme of the present invention is described in detail.
When specifically using, according to liquefied natural gas vehicular gas cylinder composite supporting structure of the present invention, by circular cylinder 11 two-sided welding in inner bag front head 2, and make circular cylinder 11 concentric with inner bag front head 2; Front end composite support 10 inserts in distributor 8, and adopt locating stud 9 to carry out counterbore soldering and sealing, soldering and sealing quantity is 3 (carrying out a soldering and sealing every 120 degree); Inserted by front end composite support 10 the other end in circular cylinder 11, adopt locating stud 9 to carry out counterbore soldering and sealing, soldering and sealing quantity is 3 (carrying out a soldering and sealing every 120 degree), and forms parts; Welding is adopted to be connected with inner bag cylindrical shell 4 these parts.
Rear end composite support 13 inserts in interior rear support axle sleeve 12, and adopt locating stud 9 to carry out counterbore soldering and sealing, soldering and sealing quantity is 3 (carrying out a soldering and sealing every 120 degree), and forms another parts; Welding is adopted to be connected with inner bag cylindrical shell 4 these parts.
Outer rear support axle sleeve 14 is welded with rear head dunnage 7, then rear head dunnage 7 is welded with outer courage rear head 5, finally outer courage rear head 5 is welded with outside liner cylinder body 3.
Inner bag is set in outside liner cylinder body 3, and makes rear end composite support 13 insert in outer rear support axle sleeve 14, after then promoting certain size, make rear end composite support 13 unsettled; Then outer courage front head 1 is welded with outside liner cylinder body 3.
Finally distributor 8 and outer courage front head 1 are carried out boxing full weld.
Wherein, front end composite support 10 and the nonmetallic material of rear end composite support 13, require that it has good impact toughness under low temperature (-196 degree), tensile strength and compressive strength higher, there is again lower thermal conductivity simultaneously, include but not limited to epoxy glass laminate.
Rear end composite support 13 also can adopt metallic material, as Austenitic Stainless Steel, then increases the material identical with front end composite support 10 between rear end composite support 13 with outer rear support axle sleeve 14, the heat conduction of rear end equally also can be reduced.
In sum, by means of technique scheme of the present invention, for the LNG gas cylinder of high-vacuum insulation, conventional construction (304 stainless steels support) accounts for about 40% of total hot-fluid by the hot-fluid of its supporting structure, and the thermal conductivity of this composite supporting structure is only 0.35-0.45W/(m.K) (304 stainless thermal conductivitys reach 15W/(m.K)), the hot-fluid supported before and after can being greatly reduced by, enable the time that the low temperature liquid fuel speed sensorless vector control in Vehicular liquefied natural gas cylinder is longer, while the potential safety hazard caused reducing natural gas cylinder inner liner pressure to continue to raise, can reduce because safety valve is frequently opened and the economic loss that fuel of releasing causes, this composite supporting structure has excellent mechanical property, and its tensile strength, shear strength and impact toughness all can meet the required mechanical property requirements of Vehicular liquefied natural gas cylinder, rear end composite supporting structure adopts plug-type bascule, and the larger stress that liquefied natural gas bottle inner bag can be avoided to produce due to its thermal expansion is at low temperatures concentrated, and greatly reduces potential safety hazard, adopt the structure of interpolation type, can reduce weld seam quantity, improve support strength, structure is simple, easily manufactured.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a liquefied natural gas vehicular gas cylinder composite supporting structure, it is characterized in that, comprise outside liner cylinder body (3), the two ends of described outside liner cylinder body (3) are respectively equipped with the outer courage front head (1) and outer courage rear head (5) matched, described outside liner cylinder body (3) is also provided with inner bag cylindrical shell (4) simultaneously, the two ends of described inner bag cylindrical shell (4) are also provided with the inner bag front head (2) and inner bag rear head (6) that match, wherein, described outer courage rear head (5) is also provided with rear head dunnage (7); Described inner bag front head (2) is provided with circular cylinder (11), and described outer courage front head (1) is provided with distributor (8), is provided with front end composite support (10) between described circular cylinder (11) and described distributor (8) simultaneously; Described inner bag rear head (6) is provided with interior rear support axle sleeve (12), described rear head dunnage (7) is provided with outer rear support axle sleeve (14), is provided with rear end composite support (13) in institute between rear support axle sleeve (12) and described outer rear support axle sleeve (14) simultaneously.
2. liquefied natural gas vehicular gas cylinder composite supporting structure according to claim 1, is characterized in that, composite support (10) one end, described front end is connected with described distributor (8), and the other end of described front end composite support (10) is connected with inner bag.
3. liquefied natural gas vehicular gas cylinder composite supporting structure according to claim 1, it is characterized in that, one end of described rear end composite support (13) is connected with described inner bag by described interior rear support axle sleeve (12), and the other end of described rear end composite support (13) is connected in described outer courage by described outer rear support axle sleeve (14).
4. the liquefied natural gas vehicular gas cylinder composite supporting structure according to claim 2-3 any one, it is characterized in that, described front end composite support (10) and described rear end composite support (13) are all fixed in described distributor (8), circular cylinder (11) and interior rear support axle sleeve (12), outer rear support axle sleeve (14) by locating stud (9).
5. liquefied natural gas vehicular gas cylinder composite supporting structure according to claim 1, is characterized in that, described front end composite support (10) and rear end composite support (13) are nonmetallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401620.0A CN104989945A (en) | 2015-07-09 | 2015-07-09 | Gas cylinder combined supporting structure used for liquefied natural gas vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510401620.0A CN104989945A (en) | 2015-07-09 | 2015-07-09 | Gas cylinder combined supporting structure used for liquefied natural gas vehicle |
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| CN104989945A true CN104989945A (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510401620.0A Pending CN104989945A (en) | 2015-07-09 | 2015-07-09 | Gas cylinder combined supporting structure used for liquefied natural gas vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332052A (en) * | 2018-04-16 | 2018-07-27 | 张家港富瑞深冷科技有限公司 | A kind of novel support structure and the low-temperature (low temperature) vessel with it |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3782128A (en) * | 1970-06-01 | 1974-01-01 | Lox Equip | Cryogenic storage vessel |
| CN2451917Y (en) * | 2000-11-07 | 2001-10-03 | 上海交通大学 | Liquefied natural gas transport storing tank |
| CN1683816A (en) * | 2004-04-15 | 2005-10-19 | 中国国际海运集装箱(集团)股份有限公司 | High vacuum heat insulation low temperature liquefied gas storage tank |
| CN103363289A (en) * | 2012-03-27 | 2013-10-23 | 北京天海工业有限公司 | Front support of liner of horizontal vehicle-mounted liquefied natural gas storage tank |
| CN103363290A (en) * | 2012-03-27 | 2013-10-23 | 北京天海工业有限公司 | Rear support of liner of horizontal vehicle-mounted liquefied natural gas storage tank |
| CN204879432U (en) * | 2015-07-09 | 2015-12-16 | 日照兴业汽车配件有限公司 | Compound bearing structure of automobile -used gas cylinder of liquefied natural gas |
-
2015
- 2015-07-09 CN CN201510401620.0A patent/CN104989945A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3782128A (en) * | 1970-06-01 | 1974-01-01 | Lox Equip | Cryogenic storage vessel |
| CN2451917Y (en) * | 2000-11-07 | 2001-10-03 | 上海交通大学 | Liquefied natural gas transport storing tank |
| CN1683816A (en) * | 2004-04-15 | 2005-10-19 | 中国国际海运集装箱(集团)股份有限公司 | High vacuum heat insulation low temperature liquefied gas storage tank |
| CN103363289A (en) * | 2012-03-27 | 2013-10-23 | 北京天海工业有限公司 | Front support of liner of horizontal vehicle-mounted liquefied natural gas storage tank |
| CN103363290A (en) * | 2012-03-27 | 2013-10-23 | 北京天海工业有限公司 | Rear support of liner of horizontal vehicle-mounted liquefied natural gas storage tank |
| CN204879432U (en) * | 2015-07-09 | 2015-12-16 | 日照兴业汽车配件有限公司 | Compound bearing structure of automobile -used gas cylinder of liquefied natural gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332052A (en) * | 2018-04-16 | 2018-07-27 | 张家港富瑞深冷科技有限公司 | A kind of novel support structure and the low-temperature (low temperature) vessel with it |
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Application publication date: 20151021 |