CN211010765U - Crisscross labyrinth supports on-vehicle low temperature heat insulation gas cylinder of tubular - Google Patents
Crisscross labyrinth supports on-vehicle low temperature heat insulation gas cylinder of tubular Download PDFInfo
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- CN211010765U CN211010765U CN201922012244.2U CN201922012244U CN211010765U CN 211010765 U CN211010765 U CN 211010765U CN 201922012244 U CN201922012244 U CN 201922012244U CN 211010765 U CN211010765 U CN 211010765U
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Abstract
A staggered labyrinth supporting tube type vehicle-mounted low-temperature heat insulation gas cylinder belongs to the field of mobile low-temperature heat insulation pressure vessels. The main structural characteristics of the vehicle-mounted low-temperature heat insulation gas cylinder are a front support structure and a rear support structure. Under the prerequisite that does not change the gas cylinder structure, the inner tube and the outer tube of front and back support all design into inside and outside crisscross labyrinth pipe structure, and this structure can effectively lengthen heat conduction route when guaranteeing bearing structure intensity, can reduce the heat leakage quantity by a wide margin for traditional pipe. In order to eliminate thermal stress caused by thermal expansion and cold contraction, the front and rear supporting structures are fixed at the front ends and slide at the rear ends. The front end of the air cylinder is supported and fixed, so that the air cylinder can be conveniently and effectively connected with an inlet and outlet connecting pipe at the outer side; the rear end adopts a supporting tube sliding structure, and the problems of small diameter, large radial shaking and the like of a rear supporting cylinder of a conventional gas cylinder are solved. The utility model discloses still have advantages such as the solder joint is few, simple structure and intensity are easily guaranteed, this structure can be used to deposit other similar low temperature liquefied gases of dress.
Description
Technical Field
The utility model relates to an on-vehicle low temperature heat insulation gas cylinder of crisscross labyrinth support tube formula belongs to portable low temperature pressure vessel field, especially the low temperature heat insulation gas cylinder of present rapid development.
Background
The movable pressure containers such as gas cylinders are mainly used for storage and transportation of industrial raw materials and civil fuels, and are important basic equipment for national economic development and important basic facilities for people's life. According to statistics, the annual output of mobile pressure vessels such as gas cylinders and the like in China is 3000 thousands of (only), the consumption is nearly 1.4 hundred million (only), the mobile pressure vessels are all the first in the world, and the mobile pressure vessels have the characteristics of large quantity, wide range, mobility, flammable and explosive media and the like. Therefore, in recent years, the national places have paid particular attention to the technical research on the mobile pressure vessels such as gas cylinders.
With the gradual depletion of traditional energy petroleum and coal, and the greenhouse effect and acid rain generated by combustion products of petroleum and coal, people face a serious challenge of energy, resources and environmental crisis, and people increasingly need clean new energy. Hydrogen can arouse people's interest with the advantages of being renewable and abundant resources, and hydrogen can not cause environmental pollution, thus being an ideal and clean energy source. In order to reduce carbon dioxide discharged by vehicles, hydrogen-burning vehicles using hydrogen as fuel are actively developed, and research on low-temperature liquid hydrogen cylinders is also continuously developed. Compared with the traditional vehicle-mounted low-temperature heat insulation gas cylinder, liquid hydrogen has extremely low medium temperature (the design temperature is-253 ℃), and the heat leakage quantity under the same condition is far higher than that of the traditional gas cylinder, so that the research on the structural design of the low-temperature heat insulation gas cylinder of the liquid hydrogen medium needs to pay attention to the reduction of the overall heat conduction quantity of the gas cylinder and the improvement of the heat insulation performance.
The support tube of the low-temperature heat-insulation gas cylinder is the key of the design of a heat leakage structure of the gas cylinder, and the support tube not only has enough strength to bear various loads during vehicle loading, but also reduces the heat leakage as much as possible. According to the traditional support tube structure, on the premise of ensuring the strength, the heat transfer loss is too high due to too large wall thickness, and researches show that the heat flow proportion of the support structure is as high as 30-50%, so that the requirement of a vehicle-mounted liquid hydrogen cylinder cannot be met. On the contrary, if the heat loss is reduced by reducing the wall thickness, the requirements in terms of support strength, machining, and the like cannot be satisfied. Therefore, it is necessary to develop a vehicle-mounted low-temperature heat-insulation gas cylinder which has a reliable structure, small heat transfer quantity and convenient processing.
Disclosure of Invention
The utility model provides an on-vehicle low temperature adiabatic gas cylinder of crisscross labyrinth support tube formula under the prerequisite that does not change gas cylinder structure complexity, the inner tube and the outer tube of front and back support all design into inside and outside crisscross labyrinth pipe structure, and this structure can effectively extend the heat conduction route when guaranteeing bearing structure intensity, can reduce the heat leakage amount by a wide margin for traditional pipe, guarantees the long period steady operation of gas cylinder.
The utility model adopts the technical proposal that: a staggered labyrinth supporting tube type vehicle-mounted low-temperature heat insulation gas cylinder comprises a liner, a shell, an end pipeline and a supporting structure, wherein a heat insulation layer wrapping the liner is arranged in the shell, the end pipeline comprises a liquid inlet pipe, a pressure increasing pipe, a liquid outlet pipe and a gas return pipe, the liquid inlet pipe penetrates through the shell to enter the liner, and the supporting structure adopts horizontal support or vertical support; the horizontal support comprises a front support structure and a rear support structure, the front support structure is fixed, and the rear support structure slides, the front support structure comprises a shell front end socket, an inner container front end socket, a front welding flange, a staggered labyrinth front support inner pipe, a staggered labyrinth front support outer pipe and a front support connecting cover, one end of the front welding flange is fixedly connected with the shell front end socket, the other end of the front welding flange is welded with the staggered labyrinth front support inner pipe, the staggered labyrinth front support inner pipe is connected with one end of the staggered labyrinth front support outer pipe through the front support connecting cover at the end part, the other end of the staggered labyrinth front support outer pipe is welded with the inner container front end socket, and the front support structure is separated from the external environment through a front spacer sleeve; the back bearing structure contains shell back head, head behind the inner bag, back sliding sleeve flange, support inner tube behind the crisscross labyrinth, support outer tube and back support connection lid behind the crisscross labyrinth, head is fixed continuous behind back sliding sleeve flange one end and the shell, the sliding sleeve inner wall of the other end becomes sliding fit with the outer wall of support inner tube behind the crisscross labyrinth, support the inner tube behind the crisscross labyrinth and link together through the back support connection lid with the one end of the crisscross labyrinth back support outer tube, the other end of support outer tube behind the crisscross labyrinth is in the same place with head welding behind the inner bag, back bearing structure separates through back spacer and external environment.
The staggered labyrinth type front support inner pipe, the staggered labyrinth type front support outer pipe, the staggered labyrinth type rear support inner pipe and the staggered labyrinth type rear support outer pipe are designed into different staggered labyrinth type structures which are staggered inside and outside according to heat leakage rate, the pipe wall thickness of the inner pipe and the outer pipe of the square sawtooth type labyrinth structure is 3-30 mm, the axial length of each square sawtooth is 1-10 mm, and the staggered structure inside and outside is formed.
The staggered labyrinth type front supporting inner pipe, the staggered labyrinth type front supporting outer pipe, the staggered labyrinth type rear supporting inner pipe and the staggered labyrinth type rear supporting outer pipe adopt a trapezoidal, circular, triangular or spiral labyrinth type structure.
The heat-insulating gas cylinder is used for storing L NG, liquid nitrogen, liquid oxygen or liquid hydrogen.
The vertical support only adopts a front support structure, and the heat insulation gas cylinder is vertically placed and fixed.
The utility model has the advantages that a crisscross labyrinth supports on-vehicle cryogenic insulation gas cylinder of tubular, horizontal bearing structure includes preceding bearing structure and back bearing structure two parts, in order to eliminate the thermal stress that expend with heat and contract with cold and arouse, front and back bearing structure adopts the front end fixed, the gliding form of rear end, wherein, the front end supports fixedly can make things convenient for the gas cylinder to import and export the effective connection of takeover with the outside, rear end supports and slides and selects the stay tube sliding structure, the back stay tube cylinder diameter of having overcome conventional low temperature bottle is little, radially rocks greatly, the bearing structure precision of being connected with the shell is difficult to guarantee the scheduling problem, be different from traditional straight pipe, preceding stay tube and back stay tube design into inside and outside crisscross labyrinth structure of liquefied gas or other similar sawtooth type structures, under limited length condition, the heat conduction route has been prolonged to the structure of adopting inside and outside this kind, can make this department's heat leakage reduce more than 1/3.
Drawings
Fig. 1 is a structural view of a staggered labyrinth supporting tube type vehicle-mounted cryogenic insulation gas cylinder.
Fig. 2 is a view of the orifice orientation of the insulated cylinder end piping of fig. 1.
Fig. 3 is an enlarged view a in fig. 1.
Fig. 4 is an enlarged view B of fig. 1.
Fig. 5 is an enlarged view of C in fig. 3.
In the figure: 1. the outer casing comprises a front end enclosure, 2, a front welding flange, 3, a staggered labyrinth type front support inner pipe, 4, a front inner container end enclosure, 5, a staggered labyrinth type front support outer pipe, 6, a front support connecting cover, 7, a front spacer sleeve, 8, a rear support connecting cover, 9, a staggered labyrinth type rear support outer pipe, 10, a staggered labyrinth type rear support inner pipe, 11, a rear inner container end enclosure, 12, a rear sliding sleeve flange, 13, a rear outer casing end enclosure, 14, a rear spacer sleeve, 15, a heat insulation layer, 16, a liquid inlet pipe, 17, a pressurizing pipe, 18, a liquid outlet pipe, 19 and a gas return pipe.
Detailed Description
The device is described in detail below with reference to the accompanying drawings.
Fig. 1 shows a block diagram of a staggered labyrinth support tube type vehicle-mounted cryogenic insulation gas cylinder. The thermally insulated gas cylinder comprises a liner, a housing, end pipes, a thermal insulation layer 15, a front support structure arranged in a front spacer 7 and a rear support structure arranged in a rear spacer 14.
Fig. 2 is a view of the orifice orientation of the insulated cylinder end piping of fig. 1. The liquid inlet pipe 16, the pressure increasing pipe 17, the liquid outlet pipe 18 and the air return pipe 19 all penetrate through the shell front end enclosure 1 and the inner container front end enclosure 4 to enter the inner container.
Fig. 3 shows a structural view of the front support assembly (an enlarged view of a in fig. 1). The front support assembly comprises a shell front end enclosure 1, a liner front end enclosure 4, a front welding flange 2, a staggered labyrinth type front support inner pipe 3, a staggered labyrinth type front support outer pipe 5 and a front support connecting cover 6. One end of the front welding flange 2 is fixedly connected with the front shell head 1 through welding, the other end of the front welding flange is welded with the staggered labyrinth front support inner pipe 3, the staggered labyrinth front support inner pipe 3 is fixedly connected with the staggered labyrinth front support outer pipe 5 through the front support connecting cover 6 at the end part, and the other end of the staggered labyrinth front support outer pipe 5 is welded with the front inner container head 4.
Fig. 4 shows a structural view of the rear support assembly (enlarged view of B in fig. 1). Rear supporting structure contains shell rear end socket 13, inner bag rear end socket 11, back sliding sleeve flange 12, support inner tube 10 behind the crisscross labyrinth, support outer tube 9 and back supporting connection lid 8 behind the crisscross labyrinth, back sliding sleeve flange 12 one end links to each other with shell rear end socket 13 is fixed, the sliding sleeve inner wall of the other end becomes sliding fit with the outer wall of support inner tube 10 behind the crisscross labyrinth, support inner tube 10 links together through the one end of supporting connection lid 8 and the crisscross labyrinth after the support outer tube 9, the other end of crisscross labyrinth after the support outer tube 9 and the 11 welding of inner bag rear end socket are in the same place.
Fig. 5 shows a detailed structural view of the staggered labyrinth support (enlarged view of C in fig. 4). The neck pipe is integrally processed into the internal and external staggered form, and the specific sizes of the staggered labyrinth type supporting pipes and the chamfers in the figure can be changed according to different requirements of the gas cylinder on the strength and the heat leakage quantity of the neck pipe.
By adopting the technical scheme, the vehicle-mounted low-temperature heat-insulation gas cylinder supporting structure keeps enough supporting strength and can bear various loads generated in a vehicle-mounted process. The supporting structure adopts a supporting mode of front fixing and rear sliding, effectively reduces the thermal stress inside the gas cylinder and prolongs the service life of the gas cylinder. The inner pipe and the outer pipe of the front support and the rear support are both designed into a labyrinth type circular pipe structure with the inner part and the outer part staggered with each other, compared with the traditional circular pipe, the heat conduction path is greatly increased, the heat leakage is reduced, and the purpose of low-temperature heat insulation is achieved. Similarly, when the medium or application occasion of the vehicle-mounted low-temperature heat insulation gas cylinder changes, the inner pipe and the outer pipe of the front support and the rear support can also adopt staggered sawtooth structures with different shapes such as a trapezoid shape, a circular shape, a triangular shape and the like, the principle of the staggered sawtooth structures is the same as that of a square sawtooth labyrinth structure, and finally the same technical effect can be obtained.
The utility model discloses a gas cylinder not only can be used for depositing dress liquefied hydrogen, can be used for depositing other low temperature liquefied gases such as dress L NG, liquid nitrogen, liquid oxygen equally, and application range does not receive the medium restriction on the basis of above-mentioned scheme, if remove the back supporting part of this gas cylinder, including back support connection lid 8, crisscross labyrinth back support outer tube 9, crisscross labyrinth back support inner tube 10, back sliding sleeve flange 12 and back spacer 14, vertical placing, this scheme then becomes vertical low temperature adiabatic gas cylinder.
Claims (5)
1. The utility model provides a crisscross labyrinth supports on-vehicle low temperature heat insulation gas cylinder of tubular, it includes inner bag, shell, tip pipeline and bearing structure, characterized by: the heat insulation layer (15) wrapping the inner container is arranged in the shell, the end pipeline comprises a liquid inlet pipe (16), a pressure increasing pipe (17), a liquid outlet pipe (18) and a gas return pipe (19) which penetrate through the shell and enter the inner container, and the supporting structure adopts horizontal support or vertical support; the horizontal support comprises a front support structure and a rear support structure, adopts the form that the front support structure is fixed and the rear support structure slides, the front support structure comprises a shell front seal head (1), a liner front seal head (4), a front welding flange (2), a staggered labyrinth front support inner pipe (3), a staggered labyrinth front support outer pipe (5) and a front support connecting cover (6), one end of the front welding flange (2) is fixedly connected with the shell front seal head (1), the other end of the front welding flange is welded with the staggered labyrinth front support inner pipe (3), the staggered labyrinth front support inner pipe (3) is connected with one end of the staggered labyrinth front support outer pipe (5) through the front support connecting cover (6) at the end part, the other end of the staggered labyrinth front support outer pipe (5) is welded with the liner front seal head (4), and the front support structure is separated from the external environment through a front spacer sleeve (7); after bearing structure contains behind shell head (13), head (11) behind the inner bag, back sliding sleeve flange (12), support inner tube (10) behind the crisscross labyrinth, support outer tube (9) behind the crisscross labyrinth and back supporting connection lid (8), after sliding sleeve flange (12) one end links to each other with shell after head (13) is fixed, the sliding sleeve inner wall of the other end becomes sliding fit with the outer wall of support inner tube (10) behind the crisscross labyrinth, support inner tube (10) link together through the one end of back supporting connection lid (8) and crisscross labyrinth after support outer tube (9), the other end of support outer tube (9) behind the crisscross labyrinth welds together with head (11) behind the inner bag, after bearing structure separates through back spacer sleeve (14) and external environment.
2. The staggered labyrinth supporting tube type vehicle-mounted cryogenic insulation gas cylinder as claimed in claim 1, which is characterized in that: the staggered labyrinth type front supporting inner pipe (3), the staggered labyrinth type front supporting outer pipe (5), the staggered labyrinth type rear supporting inner pipe (10) and the staggered labyrinth type rear supporting outer pipe (9) are designed into different staggered labyrinth type structures which are staggered inside and outside according to heat leakage rate, the pipe wall thickness of the inner pipe and the outer pipe of the square sawtooth type labyrinth structure is 3-30 mm, the axial length of each square sawtooth is 1-10 mm, and an inside and outside staggered structure is formed.
3. The staggered labyrinth supporting tube type vehicle-mounted cryogenic insulation gas cylinder as claimed in claim 1, which is characterized in that: the staggered labyrinth type front supporting inner pipe (3), the staggered labyrinth type front supporting outer pipe (5), the staggered labyrinth type rear supporting inner pipe (10) and the staggered labyrinth type rear supporting outer pipe (9) adopt a trapezoidal, circular, triangular or spiral labyrinth type structure.
4. The staggered labyrinth supporting tube type vehicle-mounted low-temperature heat insulation gas cylinder as claimed in claim 1, which is used for storing L NG, liquid nitrogen, liquid oxygen or liquid hydrogen.
5. The staggered labyrinth supporting tube type vehicle-mounted cryogenic insulation gas cylinder as claimed in claim 1, which is characterized in that: the vertical support only adopts a front support structure, and the heat insulation gas cylinder is vertically placed and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922012244.2U CN211010765U (en) | 2019-11-20 | 2019-11-20 | Crisscross labyrinth supports on-vehicle low temperature heat insulation gas cylinder of tubular |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922012244.2U CN211010765U (en) | 2019-11-20 | 2019-11-20 | Crisscross labyrinth supports on-vehicle low temperature heat insulation gas cylinder of tubular |
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| CN211010765U true CN211010765U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922012244.2U Active CN211010765U (en) | 2019-11-20 | 2019-11-20 | Crisscross labyrinth supports on-vehicle low temperature heat insulation gas cylinder of tubular |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734158A (en) * | 2023-06-06 | 2023-09-12 | 北京中科富海低温科技有限公司 | Supporting structure and low-temperature container |
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2019
- 2019-11-20 CN CN201922012244.2U patent/CN211010765U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734158A (en) * | 2023-06-06 | 2023-09-12 | 北京中科富海低温科技有限公司 | Supporting structure and low-temperature container |
| CN116734158B (en) * | 2023-06-06 | 2023-12-12 | 北京中科富海低温科技有限公司 | Supporting structure and low-temperature container |
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