CN205090193U - With fashioned natural gas cylinder inner bag of drawing process - Google Patents
With fashioned natural gas cylinder inner bag of drawing process Download PDFInfo
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- CN205090193U CN205090193U CN201520848679.XU CN201520848679U CN205090193U CN 205090193 U CN205090193 U CN 205090193U CN 201520848679 U CN201520848679 U CN 201520848679U CN 205090193 U CN205090193 U CN 205090193U
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- cylinder body
- welding
- inner bag
- end socket
- described cylinder
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Abstract
The utility model discloses a with fashioned natural gas cylinder inner bag of drawing process, including cylinder body (1) and head (2), its characterized in that, cylinder body (1) with head (2) form a closed annular internal cavity with the welding cooperation, wherein, cylinder body (1) and head (2) are the integral type structure, the utility model discloses a welding volume has been reduced by the institutional advancement formula structure as an organic whole that passing through among the prior art changes the board, welds the bucket in the centre in cylinder body (1), has reduced the processing cost, has also avoided because of cylinder body (1) welding deformation that the large tracts of land welding caused, has leaked and weld the scheduling problem, has also solved simultaneously to produce fatigue crack because of the welding seam among the prior art to send key issues such as inner bag inefficacy.
Description
Technical field:
The utility model belongs to the structure-improved of the inner bag to natural gas cylinder in pressurized container, relates generally to a kind of inner bag adopting the natural gas cylinder of integral structure.
Background technique:
Along with the increase of China's automobile pollution, tail gas of keeping off a car is serious all the more to the pollution of air, promote the economic strategy that gas combustion automobile not only meets application natural gas resource, China is the same with World Developed Countries, and development rock gas replaces vapour, diesel oil is a main trend as the energy of automobile.But as applying the key equipment of rock gas---compressed natural gas bottle (LiqefiedNaturalGas. is called for short LNG gas cylinder) has had some enterprises to produce and application, China also establishes production and the test stone of GB24159-2009 " welded insulated gas cylinder ", as retrieving files, the patent No. is 201320187358.0, disclosed " a kind of Vehicular liquefied natural gas cylinder inner bag ", this model utility is provided with substitute phase space, itself and shell form vacuum space, so more can protect inner bag and supporting and protecting effect is play to gas cylinder, but can be able to find out in conjunction with (accompanying drawing 1), its mode of production of this inner bag is middle flap, be welded into bucket, two is welded with two end sockets and is welded, due to the limitation of production technology, article three, the difficult quality guarantee of weld seam, security incident happens occasionally, and working life is shorter, with regard to a large amount of analysis results, it is produced and there is following defect in application:
(1) welding quality difficulty controls, one-pass finished rate is low, Expenses of laboratory examination is high, automobile fuel gas bottle belongs to thin-walled pressure vessel, can only welding by one side, inwall welding is long-pending heats up in a steamer difficulty and avoids, especially T word welding line joint, the defect of its welding concentrates position, also be the weak link of gas cylinder equal pressure container, check by taking X-ray, lack of penetration, incomplete fusion, pore, slag inclusion, cold, the defect that the factors such as the hydrogen embrittlement that hot crack and electric arc cause cause, be difficult to test out one by one, and cylinder liner is minimum will clap 18 sheets, by the inspection price of existing market, testing cost wants 700 yuan, and X-ray procedure is gross imperfection, namely the primary standard detected by JB/T4730 standard is closed, to tiny hole (pore, cinder hole) or exist, Here it is have impact on the degree of vacuum of cylinder liner, leak rate, the Specifications such as glomus mosseae and static evaporation rate.
(2) tiny weld defects causes the source of fatigue failure often, according to the domestic and international analysis about LNG gas cylinder accident, except being exposed in severe fire condition except gas cylinder lost efficacy, all LNG gas cylinders in use lost efficacy, almost all occur in inflation or after just inflating, the pressures cycle of gas cylinder inflation/deflation repeatedly makes tiny defect place produce fatigue crack, so that lost efficacy, and fatigue crack often occurs in weld seam, weld interface and heat affected zone, especially longitudinal straight weld, longitudinal weld, that suffered is circumference stress (δ
q=PD/2
δ), and the longitudinal stress of longitudinal straight weld only has 1/2 (δ m=PD/4 of circumference stress
δ).(note: the computational methods of this stress are internationally recognized " lame formulas ").
Model utility content:
The utility model is for the problem in background technique, proposes the natural gas cylinder inner bag that a kind of drawing craft is shaping, and the inner bag welding deformation amount of this natural gas cylinder is little, degree of vacuum is high, leak rate, processing cost are low.
The utility model is for solving above technical problem, adopt following technological scheme: the natural gas cylinder inner bag that a kind of drawing craft is shaping, comprise cylinder body and end socket, it is characterized in that, described cylinder body coordinates formation enclosed annular inner chamber with described end socket with welding, wherein, described cylinder body and described end socket are integral structure.
Adopt above technological scheme, cylinder body of the present utility model by of the prior art be integral type structure by middle flap, the architecture advances that is welded into bucket, decrease welding capacity, reduce processing cost, it also avoid the problem such as cylinder body welding deformation, solder skip because large-area welding causes, also solve because weld seam produces fatigue crack in prior art simultaneously, so that the key issue such as inner bag inefficacy.
As optimization of the present utility model, described cylinder body is made by 06Cr19Ni10, and it is U-shaped cylindrical body, and the tensile elongation of its outer wall longitudinally from the bottom of U-shaped to opening is 500 ~ 2000mm, transverse diameter is 300 ~ 650mm, and described cylinder body bottom side wall thickness is 3 ~ 5mm; In the middle part of described cylinder body, wall thickness is 2.6 ~ 5mm, and described cylinder body upper outside wall thickness is 3 ~ 5mm.
Adopt above technological scheme, cylinder body of the present utility model is made by stainless steel 06Cr19Ni10, because cylinder body (1) is drawing and forming, the tensile elongation of its outer wall longitudinally from the bottom of U-shaped to opening is 500 ~ 2000mm, transverse diameter is 300 ~ 650mm, and inner side wall thickness corresponding to described cylinder base is 3 ~ 5mm; The middle part wall thickness of described cylinder body is 2.6 ~ 5mm; Described cylinder body upper outside wall thickness is 3 ~ 5mm; Make all directions thickness of one-piece cylinder inwall evenly reliable, make LNG cylinder liner more safe and reliable.
As optimization of the present utility model, described end socket is made by 06Cr19Ni10, it is hemispherical, top is provided with cylindrical hole, bottom is provided with the welding chimb matched with described cylinder body, this welding chimb inner diameter is corresponding with described outer wall of cylinder block diameter, and welding chimb is along the outer wall periphery uniform fold of the U-shaped opening of described cylinder body, and exceeds U-shaped opening end limit 15 ~ 20mm.
Adopt above technological scheme, the utility model end socket is made by stainless steel 06Cr19Ni10, this end socket bottom is provided with the welding chimb matched with described cylinder body, and welding chimb is along the outer wall periphery uniform fold of the U-shaped opening of described cylinder body, and exceed U-shaped opening end limit 15 ~ 20mm, this structure facilitates end socket and cylinder body at assemble welding, decreases assembly error, improves assemble welding efficiency and precision.
As optimization of the present utility model, it is coordinated with described cylinder body U-shaped opening by the welding chimb of described end socket bottom that the welding of described cylinder body and described end socket coordinates, and the cooperation place laser beam welding along both is connected into a weld line.
Adopt above technological scheme, cylinder body of the present utility model is drawing and forming integral structure, there is no weld seam, need only by end socket and cylinder body along cooperation place laser bonding, owing to reducing the weld seam on cylinder body, solve end socket in prior art, cylinder body forms circumference stress that T word joint welding produces and longitudinal stress forms the harm of fatigue crack to cylinder liner, makes cylinder liner more safe and reliable.
As optimization of the present utility model, the cross section of described weld line is semicircle, and diameter is 3 ~ 5mm, and is evenly arranged along the U-shaped opening circumference of described cylinder body.
Adopt above technological scheme, of the present utility modelly select laser welding technology, the cross section of described weld line is semicircle, diameter is 3 ~ 5mm, ensure weld line and end socket and cylinder body consistence of composition, further increase the reliability of welding, make cylinder liner more safe and reliable.
As optimization of the present utility model, the center line of described cylinder body and described end socket is located along the same line.
Adopt above technological scheme, because the center line of described cylinder body and described end socket is located along the same line, all directions further increasing one-piece cylinder inwall of the present utility model are evenly reliable.
As optimization of the present utility model, be provided with molecular sieve in the cylindrical hole position on the top of described end socket.
Adopt above technological scheme, the utility model is provided with molecular sieve at described end socket, and it act as the high molecular particles such as adsorbed water when vacuumizing, methyl alcohol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, thus ensures the degree of vacuum of adiabatic space.
In sum, what the present invention have changed the inner bag of existing product changes stretch forming integral structure into by the welded structure of prior art, and prior art end socket, cylinder body are formed T word joint welding changes end socket into, cylinder body forms a word joint welding, and compensate for the deficiencies in the prior art and defect, novel in design unique, structure is ingenious, easy to utilize, has good social economic benefit.
Accompanying drawing illustrates:
Fig. 1 is the inner bag welding schematic diagram of prior art
Fig. 2 is the utility model integral solder structural representation
Fig. 3 is the utility model housing structure figure
Fig. 4 is the utility model end enclosure structure figure
Fig. 5 is the utility model end socket welding chimb amplification assumption diagram
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described further.
As shown in Figure 1, this figure is the inner bag welded structure schematic diagram of prior art, cylinder body with being welded, two ends all adopt end socket to be welded respectively.
In this specific embodiment, in conjunction with such as accompanying drawing 2, 3, 4, shown in 5, this kind inner bag of the shaping natural gas cylinder of drawing craft, comprise cylinder body (1) and end socket (2), it is characterized in that, described cylinder body (1) coordinates formation enclosed annular inner chamber with described end socket (2) with welding, wherein, described cylinder body (1) and described end socket (2) are integral structure, because cylinder body (1) is integral type structure, decrease welding capacity, reduce processing cost, it also avoid cylinder body (1) welding deformation because large-area welding causes, the problems such as solder skip, also solve in prior art because weld seam produces fatigue crack simultaneously, so that the key issues such as inner bag inefficacy.
Shown in composition graphs 3, in order to make all directions thickness of one-piece cylinder (1) inwall evenly reliable, make LNG cylinder liner more safe and reliable, described cylinder body (1) is made by 06Cr19Ni10, and it is U-shaped cylindrical body, and the tensile elongation of its outer wall longitudinally from the bottom of U-shaped to opening is 500 ~ 2000mm, be preferably 1200mm, transverse diameter is 300 ~ 650mm, is preferably 385mm, and described cylinder body (1) bottom side wall thickness is 3 ~ 5mm; Be preferably 3mm, described cylinder body (1) middle part wall thickness is 2.6 ~ 5mm, and be preferably 3mm, described cylinder body (1) upper outside wall thickness is 3 ~ 5mm, is preferably 3mm.
Shown in composition graphs 4, decrease assembly error, improve assemble welding efficiency and precision, described end socket (2) is made by 06Cr19Ni10, it is hemispherical, top is provided with cylindrical hole, bottom is provided with the welding chimb (21) matched with described cylinder body (1), this welding chimb (21) inner diameter is corresponding with described cylinder body (1) outer diameter, and welding chimb (21) is along the outer wall periphery uniform fold of the U-shaped opening of described cylinder body (1), and exceed U-shaped opening end limit 15 ~ 20mm.
Composition graphs 2, 3, 4, shown in 5, it is that welding chimb (21) by described end socket (2) bottom coordinates with described cylinder body (1) U-shaped opening that the welding of described cylinder body (1) and described end socket (2) coordinates, and the cooperation place laser beam welding along both is connected into a weld line (12), described cylinder body (1) is drawing and forming integral structure, there is no weld seam, need only by end socket (2) and cylinder body (1) along cooperation place laser bonding, owing to reducing the weld seam on cylinder body (1), solve end socket in prior art, the circumference stress that cylinder body formation T word joint welding produces and longitudinal stress form the harm of fatigue crack to cylinder liner, make cylinder liner more safe and reliable.
Shown in composition graphs 5, ensure weld line (12) and end socket (2) and cylinder body (1) consistence of composition, further increase the reliability of welding, make cylinder liner more safe and reliable, the cross section of described weld line (12) is semicircle, diameter is 3 ~ 5mm, and is evenly arranged along the U-shaped opening circumference of described cylinder body (1).
Shown in composition graphs 2, described cylinder body (1) is located along the same line with the center line of described end socket (2), and all directions further increasing one-piece cylinder inwall of the present utility model are evenly reliable.
Shown in composition graphs 2 and Fig. 4, the top of described end socket (2) is provided with cylindrical hole, be provided with molecular sieve (3), it act as the high molecular particles such as adsorbed water when vacuumizing, methyl alcohol, ethanol, hydrogen sulfide, sulfur dioxide, carbon dioxide, thus ensures the degree of vacuum of adiabatic space.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. one kind with the shaping natural gas cylinder inner bag of drawing craft, comprise cylinder body (1) and end socket (2), it is characterized in that, described cylinder body (1) coordinates formation enclosed annular inner chamber with described end socket (2) with welding, wherein, described cylinder body (1) and described end socket (2) are integral structure.
2. the natural gas cylinder inner bag that a kind of drawing craft according to claim 1 is shaping, it is characterized in that, described cylinder body (1) is made by 06Cr19Ni10, it is U-shaped cylindrical body, the tensile elongation of its outer wall longitudinally from the bottom of U-shaped to opening is 500 ~ 2000mm, transverse diameter is 300 ~ 650mm, and described cylinder body (1) bottom side wall thickness is 3 ~ 5mm, and described cylinder body (1) middle part wall thickness is 2.6 ~ 5mm; Described cylinder body (1) upper outside wall thickness is 3 ~ 5mm.
3. the natural gas cylinder inner bag that a kind of drawing craft according to claim 1 is shaping, it is characterized in that, described end socket (2) is made by 06Cr19Ni10, it is hemispherical, top is provided with cylindrical hole, bottom is provided with the welding chimb (21) matched with described cylinder body (1), this welding chimb (21) inner diameter is corresponding with described cylinder body (1) outer diameter, and welding chimb (21) is along the outer wall periphery uniform fold of the U-shaped opening of described cylinder body (1), and exceed U-shaped opening end limit 15 ~ 20mm.
4. the natural gas cylinder inner bag that a kind of drawing craft according to claim 1 is shaping, it is characterized in that, it is that welding chimb (21) by described end socket (2) bottom coordinates with described cylinder body (1) U-shaped opening that the welding of described cylinder body (1) and described end socket (2) coordinates, and the cooperation place laser beam welding along both is connected into a weld line (12).
5. the natural gas cylinder inner bag that a kind of drawing craft according to claim 4 is shaping, it is characterized in that, the cross section of described weld line (12) is semicircle, and diameter is 3 ~ 5mm, and is evenly arranged along the U-shaped opening circumference of described cylinder body (1).
6. the natural gas cylinder inner bag that a kind of drawing craft according to claim 1 is shaping, is characterized in that, described cylinder body (1) is located along the same line with the center line of described end socket (2).
7. the natural gas cylinder inner bag that a kind of drawing craft according to claim 1 or 3 is shaping, is characterized in that, is provided with molecular sieve (3) in the cylindrical hole position on the top of described end socket (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848679.XU CN205090193U (en) | 2015-10-22 | 2015-10-22 | With fashioned natural gas cylinder inner bag of drawing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520848679.XU CN205090193U (en) | 2015-10-22 | 2015-10-22 | With fashioned natural gas cylinder inner bag of drawing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205090193U true CN205090193U (en) | 2016-03-16 |
Family
ID=55480879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520848679.XU Expired - Fee Related CN205090193U (en) | 2015-10-22 | 2015-10-22 | With fashioned natural gas cylinder inner bag of drawing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205090193U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704821A (en) * | 2015-10-22 | 2017-05-24 | 温州深拉防爆设备有限公司 | Natural gas cylinder liner for drawing process forming |
-
2015
- 2015-10-22 CN CN201520848679.XU patent/CN205090193U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704821A (en) * | 2015-10-22 | 2017-05-24 | 温州深拉防爆设备有限公司 | Natural gas cylinder liner for drawing process forming |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20201022 |