CN213576770U - Inner frame support type vehicle-mounted low-temperature heat insulation gas cylinder - Google Patents
Inner frame support type vehicle-mounted low-temperature heat insulation gas cylinder Download PDFInfo
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- CN213576770U CN213576770U CN202020877231.1U CN202020877231U CN213576770U CN 213576770 U CN213576770 U CN 213576770U CN 202020877231 U CN202020877231 U CN 202020877231U CN 213576770 U CN213576770 U CN 213576770U
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- 238000009413 insulation Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims description 57
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 239000011229 interlayer Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 41
- 239000010410 layer Substances 0.000 description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000003949 liquefied natural gas Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
An inner frame support type vehicle-mounted low-temperature heat insulation gas cylinder belongs to the field of mobile low-temperature heat insulation pressure containers. The front and rear support structure of the gas cylinder mainly comprises a support ring plate, a support outer pipe, a support long pipe, a support short pipe and a support connecting cover. The supporting ring plate and the supporting outer pipe are positioned in an interlayer between the inner container and the shell end socket, so that the heat conduction path of the whole supporting structure is prolonged, holes are formed in the supporting ring plate, and the heat leakage quantity of the gas cylinder is greatly reduced. Compared with the traditional heat-insulation gas cylinder, the structure avoids the opening of the shell, reduces leakage points and improves the safety performance of the gas cylinder. The existence of the supporting ring plate and the supporting outer pipe is equivalent to the reduction of the length of the cantilever beam, and the rigidity and the stability of the supporting structure are improved on the premise of ensuring the structural strength. In addition, the pipeline at the end part of the gas cylinder is designed into a circular arc or S-shaped structure to be circuitous in the interlayer space, so that the heat loss is further reduced.
Description
Technical Field
The utility model relates to an on-vehicle low temperature adiabatic gas cylinder of internal frame support type belongs to portable low temperature pressure vessel technical field.
Background
With the continuous development of economy in China, automobiles become indispensable tools for people to go out gradually, and the demand for automobiles is increased gradually. The rapid growth of the number of automobiles highlights the contradiction of shortage of petroleum resources on the one hand, and the exhaust gas emitted therefrom is one of the main sources of atmospheric pollution. In order to gradually transform automobile energy, clean fuel is used for automobiles, and under the guidance of national policies, the development of liquefied natural gas automobiles is highly emphasized by large automobile enterprises. Among them, the LNG cryogenic insulation cylinder is an important part of a natural gas automobile. With the development of technology, the application range of this type of gas cylinder equipment is still expanding, and the gas cylinder equipment is being developed in the direction of light weight, large size and extreme.
In addition, as petroleum and coal, which are traditional energy sources, are gradually exhausted, hydrogen energy has attracted people's interest with the renewable advantages and abundant resources. At present, hydrogen-burning automobiles are also rapidly developed and are the key planting industry of China. However, the hydrogen-burning vehicle must be equipped with a low-temperature heat-insulation liquefied hydrogen gas cylinder as a hydrogen gas supply source, and the use condition of the liquefied hydrogen gas low-temperature heat-insulation cylinder is more severe due to lower temperature, which becomes one of the problems to be solved urgently in the industry.
Compare with traditional little volume LNG gas cylinder, large-scale LNG gas cylinder and liquid hydrogen ultra-low temperature heat insulation gas cylinder have proposed higher requirement to the daily evaporation rate and the structural strength of gas cylinder. The support structure 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 structure not only has enough strength to bear various loads during vehicle-mounted operation, but also reduces heat leakage as much as possible. If the traditional support tube structure is adopted, the strength requirement can be met, but the heat loss caused by too large wall thickness is too high, and researches show that the heat flow proportion of the support structure is as high as 30-50 percent and the daily evaporation rate requirement of the vehicle-mounted liquid hydrogen cylinder cannot be met. 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, there is a need to develop a vehicle-mounted low-temperature heat-insulating gas cylinder which has a reliable structure, low heat leakage and convenient processing.
SUMMERY OF THE UTILITY MODEL
The utility model provides an on-vehicle low temperature adiabatic gas cylinder of internal frame support type, this gas cylinder can store automobile-used liquid hydrogen for long-time low temperature, can not only bear the inertial load under the different on-vehicle operating modes, lower thermal evaporation rate in addition.
The utility model adopts the technical proposal that: the utility model provides an on-vehicle low temperature adiabatic gas cylinder of inner frame support type, it includes shell, heat insulation layer, inner bag and prevents overcharging the baffle, and the inner bag setting is in the inside of shell, and the heat insulation layer sets up the surface at the inner bag, and it still includes tip pipeline and bearing structure, the tip pipeline contains feed liquor pipe, booster pipe, drain pipe and muffler, and feed liquor pipe, booster pipe, drain pipe and muffler pass the inside that shell, heat insulation layer inserted the inner bag respectively.
The utility model discloses a support structure, including shell, front supporting structure, back supporting structure, front end cap, back end cap, front supporting structure, front supporting ring board, front supporting sleeve, front end cap, front supporting ring board, front end cap, front supporting structure, back end cap, front supporting structure sliding connection inner bag, front supporting structure contains the front support long tube, front support nozzle stub and front support connection lid, the front support long tube is located the front support nozzle stub, the front support long tube aligns with the tip of front support nozzle stub, through front support connection lid fixed connection, the front support ring board is connected through the front support long tube to the front support sleeve, connect the inner bag and stretch into the heat insulation layer through the front support nozzle stub, the front end cap is connected to the outer portion of front support sleeve and the inner bag.
The rear supporting structure comprises a rear supporting outer pipe, a rear supporting ring plate, a rear supporting shaft sleeve and a rear supporting sleeve, one end of the rear supporting outer pipe is fixedly connected with the rear end socket of the shell, the other end of the rear supporting outer pipe is connected with the rear supporting ring plate, the rear supporting shaft sleeve is welded on the rear supporting ring plate, the rear supporting sleeve comprises a rear supporting long pipe, a rear supporting short pipe and a rear supporting connecting cover, the rear supporting long pipe is positioned in the rear supporting short pipe, the rear supporting long pipe is aligned with the end part of the rear supporting short pipe, through the connection of back support connection lid, back support sleeve inserts back support sleeve through the back long tube and becomes sliding connection, and back support sleeve passes through back support nozzle stub and connects the inner bag and stretch into the heat insulation layer, and back spacer cover is in back support sleeve's outside, and the back head of the end connection inner bag of back spacer prevents to fill the baffle cover in the outside of back spacer and the inner wall of fixed connection inner bag, prevents that the bottom of crossing filling the baffle has the aperture.
The front supporting ring plate and the rear supporting ring plate are of an oval, butterfly, spherical or conical structure.
The liquid inlet pipe, the pressure increasing pipe, the liquid outlet pipe and the gas return pipe adopt circular, S-shaped or other arc-shaped structures so as to prolong the heat transfer path.
The front support ring plate and the rear support ring plate are provided with a plurality of rows of round holes with the aperture or side length of 10-100mm, and square holes or elliptical holes with chamfers, so that the heat transfer area is reduced.
The utility model has the advantages that: the front and back support structure of the gas cylinder mainly comprises a support ring plate, a support outer pipe, a support long pipe, a support short pipe and a support connecting cover. The supporting ring plate and the supporting outer pipe are positioned in the interlayer between the inner container and the shell end socket, so that the heat conduction path of the integral supporting structure is prolonged, the heat leakage of the gas cylinder is reduced, and the heat loss is further reduced by punching the supporting ring plate; the existence of the supporting ring plate and the supporting outer pipe is equivalent to the reduction of the length of the cantilever beam, and the rigidity and the stability of the supporting structure are improved on the premise of ensuring the structural strength; due to the existence of the supporting ring plate and the supporting outer pipe, the space of a vacuum interlayer between the inner container and the shell of the gas cylinder is far larger than that of a traditional low-temperature heat-insulation gas cylinder, and a flexible small pipe can be selected to detour in the space to prolong a heat conduction path, so that the heat leakage generated by a pipeline system is reduced; the shell is fixedly connected with the front end enclosure of the inner container through the front supporting structure, and is slidably connected with the rear end enclosure of the inner container through the rear supporting structure, so that the thermal stress caused by thermal expansion and cold contraction is eliminated; compared with the traditional heat-insulating gas cylinder, the structure avoids the opening of the shell, reduces leakage points and improves the safety performance of the gas cylinder.
Drawings
Fig. 1 is a structural view of an inner frame support type vehicle-mounted cryogenic insulation gas cylinder.
Figure 2 is a first schematic of the insulated cylinder end piping of figure 1.
Fig. 3 is a second schematic of the insulated cylinder end piping of fig. 1.
Fig. 4 is an enlarged view a in fig. 1.
Fig. 5 is an enlarged view B of fig. 1.
Fig. 6 is a circular hole pattern on the support ring plate of fig. 1.
Fig. 7 is an enlarged view of C in fig. 1.
In the figure: 1. the outer shell, 2, a heat insulating layer, 3, an inner container, 4, a front supporting outer pipe, 5, a front supporting ring plate, 6, a front supporting sleeve, 6a, a front supporting long pipe, 6b, a front supporting short pipe, 6c, a front supporting connecting cover, 7, a rear supporting outer pipe, 8, a rear supporting ring plate, 9, a rear supporting sleeve, 10a, a rear supporting long pipe, 10b, a rear supporting short pipe, 10c, a rear supporting connecting cover, 11, a front spacer sleeve, 12, a rear spacer sleeve, 13, an anti-overcharging partition plate, 13a, a small hole, 14, a liquid inlet pipe, 14a, a circular arc liquid inlet pipe, 14a1, a circular arc liquid inlet pipe liquid inlet end, 14a2, a circular arc liquid inlet pipe liquid outlet end, 14b, an S-shaped pressurizing pipe, 14b1, an S-shaped liquid inlet end, 14b2, an S-shaped liquid inlet end, 15, a liquid outlet pipe, a circular arc-shaped liquid inlet pipe, 15a1, a pressurizing pipe, 15a2, an outlet end of the circular arc-shaped pressurizing pipe, 15b, the S-shaped pressurizing pipe, 15b1, an inlet end of the S-shaped pressurizing pipe, 15b2, an outlet end of the S-shaped pressurizing pipe, 16, a liquid outlet pipe, 16a, a circular arc-shaped liquid outlet pipe, 16a2, an outlet end of the circular arc-shaped liquid outlet pipe, 16b, the S-shaped liquid outlet pipe, 16b1, an inlet end of the S-shaped liquid outlet pipe, 16b2, an outlet end of the S-shaped liquid outlet pipe, 17, a gas return pipe, 17a, a circular arc-shaped gas return pipe, 17a1, an inlet end of the circular arc-shaped gas return pipe, 17a2, an outlet end of the circular arc-shaped gas return pipe, 17b, the S-shaped gas return pipe, 17b1, an inlet end of the S-shaped gas return pipe, 17 b.
Detailed Description
The device is described in detail below with reference to the accompanying drawings.
Fig. 1 shows a structural view of an inner frame support type on-vehicle cryogenic insulation gas cylinder. The inner frame support type vehicle-mounted low-temperature heat insulation gas cylinder comprises a shell 1, a heat insulation layer 2, an inner container 3, an anti-overcharging partition plate 13, an end pipeline and a support structure, wherein the inner container 3 is arranged inside the shell 1, and the heat insulation layer 2 is arranged on the outer surface of the inner container 3. The end pipeline comprises a liquid inlet pipe 14, a pressure increasing pipe 15, a liquid outlet pipe 16 and a gas return pipe 17, and the liquid inlet pipe 14, the pressure increasing pipe 15, the liquid outlet pipe 16 and the gas return pipe 17 penetrate through the shell 1 and the heat insulating layer 2 and are inserted into the inner container 3.
Figure 2 shows a first solution for the insulated cylinder end of figure 1. In order to more clearly display the positions of the pipelines, only the inner container 3, the shell 1, the circular arc liquid inlet pipe 14a, the circular arc pressurizing pipe 15a, the circular arc liquid outlet pipe 16a and the circular arc air return pipe 17a are displayed. The liquid inlet end 14a1 of the circular arc-shaped liquid inlet pipe, the liquid outlet end 15a2 of the pressure increasing pipe, the liquid outlet end 16a2 of the circular arc-shaped liquid outlet pipe and the air inlet end 17a1 of the circular arc-shaped air return pipe are fixedly connected to the front sealing head of the shell 1, and the liquid outlet end 14b2 of the circular arc-shaped liquid inlet pipe, the liquid inlet end 15b1 of the circular arc-shaped pressure increasing pipe, the liquid inlet end 16b1 of the circular arc-shaped liquid outlet pipe and the air outlet end 17b2 of the air.
Figure 3 shows a second solution for the insulated cylinder end of figure 1. In order to show the positions of the pipelines more clearly, only the inner container 3, the shell 1, the S-shaped liquid inlet pipe 14b, the S-shaped pressure increasing pipe 15b, the S-shaped liquid outlet pipe 16b and the S-shaped air return pipe 17b are shown. An S-shaped liquid inlet end 14b1 of the liquid inlet pipe, a liquid outlet end 15b2 of the pressure increasing pipe, a liquid outlet end 16b2 of the S-shaped liquid outlet pipe and a gas inlet end 17b1 of the S-shaped gas return pipe are fixedly connected to the front sealing head of the shell 1, and the liquid outlet end 14b2 of the S-shaped liquid inlet pipe, the liquid inlet end 15b1 of the S-shaped pressure increasing pipe, the liquid inlet end 16b1 of the S-shaped liquid outlet pipe and the gas outlet end 17b2 of the gas return pipe are fixedly connected to the inner wall of the inner.
Fig. 4 shows a structural view of the front support structure (an enlarged view of a in fig. 1). The front supporting structure comprises a front supporting outer tube 4, a front supporting ring plate 5 and a front supporting sleeve 6, one end of the front supporting outer tube 4 is fixedly connected with a front end socket of the shell 1, the other end of the front supporting outer tube is connected with the front supporting ring plate 5, the front supporting sleeve 6 comprises a front supporting long tube 6a, a front supporting short tube 6b and a front supporting connecting cover 6c, the front supporting long tube 6a is located in the front supporting short tube 6b, the front supporting long tube 6a is aligned with the end part of the front supporting short tube 6b, the front supporting sleeve 6 is fixedly connected with the front supporting connecting cover 6c, the front supporting sleeve 6 is connected with the front supporting ring plate 5 through the front supporting long tube 6a, the front liner 3 is connected with the front supporting short tube 6b and extends into the heat insulating layer 2, and the front spacer 11 covers the outer part of the front supporting.
Fig. 5 shows a structural view of the rear support structure (enlarged view of B in fig. 1). The rear supporting structure comprises a rear supporting outer tube 7, a rear supporting ring plate 8, a rear supporting shaft sleeve 9 and a rear supporting sleeve 10, one end of the rear supporting outer tube 7 is fixedly connected with a rear end socket of the shell 1, the other end of the rear supporting outer tube is connected with the rear supporting ring plate 8, the rear supporting shaft sleeve 9 is welded on the rear supporting ring plate 8, the rear supporting sleeve 10 comprises a rear supporting long tube 10a, a rear supporting short tube 10b and a rear supporting connecting cover 10c, the rear supporting long tube 10a is positioned in the rear supporting short tube 10b, the rear supporting long tube 10a is aligned with the end part of the rear supporting short tube 10b and is connected with the rear supporting connecting cover 10c, the rear supporting sleeve 10 is inserted into the rear supporting shaft sleeve 9 through the rear supporting long tube 10a to form sliding connection, the rear supporting sleeve 10 is connected with the inner container 3 through the rear supporting short tube 10b and extends into the heat insulating layer 2, the rear spacer 12 covers the outer part of the rear supporting sleeve 10, the anti-overcharging clapboard 13 covers the outer part of the back spacer 12 and is fixedly connected with the inner wall of the inner container 3.
FIG. 6 shows a circular hole pattern on the support ring plate of FIG. 1. Two circles of round holes with the diameter of 50mm are formed in the front supporting ring plate 5, the number of circles and the diameter of the holes can be changed according to heat leakage requirements, and the structure of the rear supporting ring plate 8 is the same as that of the front supporting ring plate 5.
Fig. 7 shows an enlarged view of C in fig. 1. The bottom of the anti-overcharging partition 6 is provided with a small hole 13a with the inner diameter of 3mm, so that the gas cylinder can be prevented from being overcharged, as shown in the figure.
By adopting the technical scheme, the heat conduction path of the whole supporting structure is prolonged, and the supporting ring plate is perforated, so that the heat leakage quantity of the supporting structure is further reduced. Meanwhile, the structure avoids the opening of the shell, so that leakage points are reduced, and the safety performance of the gas cylinder is improved. The existence of the supporting ring plate and the supporting outer pipe is equivalent to increase the size of the whole supporting structure, and the rigidity and the stability of the supporting structure are improved on the premise of ensuring the structural strength.
On the other hand, a connecting small pipe penetrating through the shell into the inner container in the vehicle-mounted low-temperature heat-insulation gas cylinder comprises a liquid inlet pipe, a pressure increasing pipe, a liquid outlet pipe and a gas return pipe, and adopts an arc-shaped or S-shaped circuitous pipeline design, so that a heat transfer path is firstly prolonged, and heat leakage is reduced; secondly, the flexibility of the pipeline can be improved, and the service life is prolonged.
Claims (4)
1. The utility model provides an on-vehicle low temperature adiabatic gas cylinder of inner frame support type, it includes shell (1), heat insulation layer (2), inner bag (3) and prevents overcharging baffle (13), and inner bag (3) set up in the inside of shell (1), and heat insulation layer (2) set up the surface at inner bag (3), characterized by: the heat insulation structure further comprises an end pipeline and a supporting structure, wherein the end pipeline comprises a liquid inlet pipe (14), a pressure increasing pipe (15), a liquid outlet pipe (16) and a gas return pipe (17), and the liquid inlet pipe (14), the pressure increasing pipe (15), the liquid outlet pipe (16) and the gas return pipe (17) penetrate through the shell (1) and the heat insulation layer (2) respectively and are inserted into the inner container (3);
the supporting structure comprises a front supporting structure and a rear supporting structure, the shell (1) is fixedly connected with a front end socket of the inner container (3) through the front supporting structure, the rear end socket of the inner container (3) is connected with the rear supporting structure in a sliding manner, the front supporting structure comprises a front supporting outer tube (4), a front supporting ring plate (5) and a front supporting sleeve (6), one end of the front supporting outer tube (4) is fixedly connected with the front end socket of the shell (1), the other end of the front supporting outer tube is connected with the front supporting ring plate (5), the front supporting sleeve (6) comprises a front supporting short tube (6 a), a front supporting long tube (6 b) and a front supporting connecting cover (6 c), the front supporting long tube (6 a) is positioned in the front supporting short tube (6 b), the front supporting long tube (6 a) is aligned with the end part of the front supporting short tube (6 b), the front supporting sleeve (6) is fixedly connected with the front supporting ring plate (5) through the front supporting long tube (6 a), the front support short pipe (6 b) is connected with the inner container (3) and extends into the heat insulation layer (2), and the front spacer bush (11) covers the outer part of the front support sleeve (6) and is connected with the front end enclosure of the inner container (3);
the rear supporting structure comprises a rear supporting outer tube (7), a rear supporting ring plate (8), a rear supporting shaft sleeve (9) and a rear supporting sleeve (10), one end of the rear supporting outer tube (7) is fixedly connected with a rear end socket of the shell (1), the other end of the rear supporting outer tube is connected with the rear supporting ring plate (8), the rear supporting shaft sleeve (9) is welded on the rear supporting ring plate (8), the rear supporting sleeve (10) comprises a rear supporting long tube (10 a), a rear supporting short tube (10 b) and a rear supporting connecting cover (10 c), the rear supporting long tube (10 a) is positioned in the rear supporting short tube (10 b), the rear supporting long tube (10 a) is aligned with the end part of the rear supporting short tube (10 b), the rear supporting connecting cover (10 c) is connected through the rear supporting, the rear supporting sleeve (10) is inserted into the rear supporting shaft sleeve (9) through the rear supporting long tube (10 a) to form a sliding connection, the rear supporting sleeve (10) is connected with the inner container (3) through the rear supporting short tube (, the rear spacer bush (12) covers the outer part of the rear support sleeve (10), the end part of the rear spacer bush (12) is connected with a rear end socket of the inner container (3), the anti-overcharging partition plate (13) covers the outer part of the rear spacer bush (12) and is fixedly connected with the inner wall of the inner container (3), and a small hole (13 a) is formed in the bottom of the anti-overcharging partition plate (13).
2. The inner frame supported vehicle mounted cryogenic insulation cylinder according to claim 1, wherein: the front supporting ring plate (5) and the rear supporting ring plate (8) adopt an oval, butterfly, spherical or conical structure.
3. The inner frame supported vehicle mounted cryogenic insulation cylinder according to claim 1, wherein: the liquid inlet pipe (14), the pressure increasing pipe (15), the liquid outlet pipe (16) and the air return pipe (17) adopt a circular, S-shaped or other arc-shaped structure.
4. The inner frame supported vehicle mounted cryogenic insulation cylinder according to claim 1, wherein: the front supporting ring plate (5) and the rear supporting ring plate (8) are provided with a plurality of rows of round holes with the aperture or side length of 10-100mm, and square holes or elliptical holes with chamfers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020877231.1U CN213576770U (en) | 2020-05-22 | 2020-05-22 | Inner frame support type vehicle-mounted low-temperature heat insulation gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020877231.1U CN213576770U (en) | 2020-05-22 | 2020-05-22 | Inner frame support type vehicle-mounted low-temperature heat insulation gas cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN213576770U true CN213576770U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020877231.1U Active CN213576770U (en) | 2020-05-22 | 2020-05-22 | Inner frame support type vehicle-mounted low-temperature heat insulation gas cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503507A (en) * | 2020-05-22 | 2020-08-07 | 大连理工大学 | On-vehicle low temperature heat insulation gas cylinder of interior intermediate layer formula |
-
2020
- 2020-05-22 CN CN202020877231.1U patent/CN213576770U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503507A (en) * | 2020-05-22 | 2020-08-07 | 大连理工大学 | On-vehicle low temperature heat insulation gas cylinder of interior intermediate layer formula |
| CN111503507B (en) * | 2020-05-22 | 2024-08-20 | 大连理工大学 | Internal sandwich type vehicle-mounted low-temperature heat-insulating gas cylinder |
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