Vehicle-mounted LNG cylinder long-path channel heat insulation structure device
By adopting an S-shaped long-path channel structure and supporting inner and outer neck tubes in the vehicle-mounted LNG cylinder, the problem of inconsistent heat preservation effect of the vehicle-mounted LNG cylinder is solved, achieving lower heat transfer and higher heat preservation performance.
Patent Information
- Application Number
- CN202520122834.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-01-17
AI Technical Summary
The insulation performance of existing vehicle-mounted LNG cylinders varies, especially the connection and support structure between the inner and outer liner, which leads to a large amount of heat transfer and affects the insulation performance.
The structure adopts an S-shaped long-path channel structure, and through the design of supporting inner and outer neck tubes, a complete supporting and heat-conducting structure is formed, which prevents the cryogenic medium from contacting the support phase. Furthermore, the supporting inner and outer neck tubes are set in the vacuum layer to reduce heat transfer.
It effectively reduces heat transfer, lowers the static evaporation rate from 1.6 to 1.21, significantly improves insulation performance, and the radial support sliding ring design ensures the stability of insulation performance.
Smart Images
Figure CN223622692U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LNG cylinder technology, specifically to a long-path channel insulation structure device for vehicle-mounted LNG cylinders. Background Technology
[0002] Existing vehicle-mounted LNG cylinders typically use B4 cryogenic insulated cylinders, which are structurally composed of an inner cylinder, an outer cylinder, and a sandwich layer. Heat conduction between the inner and outer layers is blocked through the sandwich layer by wrapping it with insulating material and applying a vacuum, thus achieving a heat insulation effect. Therefore, the heat insulation effect of the connection, support, and liquid outlet device between the inner and outer layers is particularly important. However, the diverse structures and materials currently available on the market result in varying insulation performance. Utility Model Content
[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a long-path channel insulation structure device for vehicle-mounted LNG cylinders. Based on the operational requirements of vehicle-mounted cryogenic cylinders, an S-shaped long-path channel structure is used to form a complete support and heat-conducting structure, which prevents the cryogenic medium from contacting the support and reduces the introduction of heat.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a long-path channel insulation structure device for vehicle-mounted LNG cylinders, comprising an inner cryogenic container for storing cryogenic liquid media and an outer cryogenic container disposed outside the inner cryogenic container, wherein a vacuum layer is provided between the inner cryogenic container and the outer cryogenic container, and further comprising a supporting inner neck tube and a supporting outer neck tube; the end of the inner cryogenic container is provided with a cryogenic container inner end cap, and the cryogenic container inner end cap has a first through hole, and the inner side of the cryogenic container inner end cap is provided with a connection to the first... A vacuum hood with a through-hole adapted to the vacuum chamber; the inner neck tube of the support is disposed in the first through-hole, and the inner end of the inner neck tube of the support extends into the vacuum chamber of the vacuum hood, and the outer end of the inner neck tube of the support extends into the vacuum layer; the inner neck tube of the support is provided with an S-shaped long path channel for the conduction of cold energy of the cryogenic liquid medium; the end of the outer shell of the cryogenic container is provided with a cryogenic container outer end cap, and the cryogenic container outer end cap is provided with a second through-hole corresponding to the first through-hole; the outer neck tube of the support is disposed in the second through-hole, and the inner end of the outer neck tube of the support extends into the vacuum layer and connects with the inner neck tube of the support.
[0005] A further improvement is that the inner support tube includes a first support tube, a second support tube, and a third support tube arranged sequentially from the inside to the outside, with a first gap between the first support tube and the second support tube, and a second gap between the second support tube and the third support tube; the outer ends of the first support tube and the second support tube are connected by a first support connecting ring, the inner ends of the second support tube and the third support tube are connected by a second support connecting ring, and the outer wall of the third support tube is connected to a first through hole.
[0006] A further improvement is that the first support connecting ring is provided with a first protrusion for insertion into the first gap, and the second support connecting ring is provided with a second protrusion for insertion into the second gap.
[0007] The further improvement is that the inner ends of the first support tube, the second support tube and the third support tube are flush, and the outer ends of the first support tube and the second support tube are flush and extend from the outer end of the third support tube.
[0008] A further improvement is that a support reinforcing ring is provided on the inner wall of the inner end of the first support tube.
[0009] A further improvement is that the outer support tube includes a fourth support tube and a radial support sliding ring. The outer wall of the fourth support tube is connected to the second through hole, and the outer wall of the inner end of the fourth support tube is provided with a groove. The radial support sliding ring is fixedly installed in the groove, and the outer circular surface of the radial support sliding ring is slidably connected to the inner support tube.
[0010] A further improvement is that the radial support sliding ring is made of fiberglass and has several vent holes.
[0011] A further improvement is that the outer end of the fourth support tube is flush with the second through hole.
[0012] A further improvement is that a first reinforcing plate is provided around the first through hole on the outer wall of the inner end cap of the cryogenic container.
[0013] A further improvement is that the outer wall of the cryogenic container outer end cap is provided with a second reinforcing plate for sealing the second through hole.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1. In this utility model, according to the operating requirements of the vehicle-mounted cryogenic gas cylinder, an S-shaped long-path channel structure is used to form a complete support and heat conduction structure, which prevents the cryogenic medium from contacting the support, reduces the introduction of heat, effectively reduces the heat transfer between the inner and outer tanks, and increases the static evaporation rate from 1.6 in the traditional structure to 1.21.
[0016] 2. In this utility model, the radial support sliding ring is designed to move freely axially, ensuring the heat preservation effect. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the thermal insulation structure of the long-path channel for the vehicle-mounted LNG cylinder in this embodiment of the present invention.
[0018] Figure 2This is an enlarged schematic diagram of the long-path channel insulation structure device for vehicle-mounted LNG cylinders in an embodiment of this utility model.
[0019] Figure 3 This is a schematic diagram of the supporting inner neck tube in an embodiment of the present invention;
[0020] Figure 4 This is a schematic diagram of the structure supporting the outer neck tube in an embodiment of this utility model.
[0021] Figure label:
[0022] 1-Inner shell of cryogenic container; 11-Inner head of cryogenic container; 12-First through hole; 13-Vacuum hood; 14-Cryogenic liquid medium; 15-First reinforcing plate;
[0023] 2-Cryogenic container shell; 21-Cryogenic container outer end; 22-Second through hole; 23-Second reinforcing plate;
[0024] 3-Vacuum layer;
[0025] 4-Supporting inner neck tube; 401-First support tube; 402-Second support tube; 403-Third support tube; 404-First gap; 405-Second gap; 406-First support connecting ring; 407-First protrusion; 408-Second support connecting ring; 409-Second protrusion; 410-Supporting reinforcing ring;
[0026] 5-Supporting outer neck tube; 51-Fourth support tube; 52-Groove; 53-Radial support sliding ring; 54-Ventilation hole. Detailed Implementation
[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
[0028] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.
[0030] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0031] See Figure 1 and Figure 2 As shown, this utility model embodiment provides a long-path channel insulation structure device for vehicle-mounted LNG cylinders, including a cryogenic inner shell container 1 for storing cryogenic liquid medium 14 and a cryogenic outer shell container 2 disposed outside the cryogenic inner shell container 1, and a vacuum layer 3 is provided between the cryogenic inner shell container 1 and the cryogenic outer shell container 2, and also includes a supporting inner neck tube 4 and a supporting outer neck tube 5.
[0032] The inner shell container 1 of the cryogenic container is provided with a cryogenic container inner head 11 at its end, and the cryogenic container inner head 11 is provided with a first through hole 12. The inner side of the cryogenic container inner head 11 is provided with a vacuum cover 13 that is adapted to the first through hole 12. Specifically, the outer side wall of the cryogenic container inner head 11 is provided with a first reinforcing plate 15 around the first through hole 12.
[0033] See Figure 2 and Figure 3As shown, the inner neck tube 4 is disposed within the first through hole 12, and the inner end of the inner neck tube 4 extends into the vacuum cavity of the vacuum shroud 13, while the outer end of the inner neck tube 4 extends into the vacuum layer 3. The inner neck tube 4 is provided with an S-shaped long path channel for the conduction of cold energy of the cryogenic liquid medium 14. Specifically, the inner neck tube 4 includes a first support tube 401, a second support tube 402, and a third support tube 403 arranged sequentially from the inside to the outside, with a first gap 404 between the first support tube 401 and the second support tube 402, and a second gap 405 between the second support tube 402 and the third support tube 403. The outer ends of the first support tube 401 and the second support tube 402 are connected by a first support connecting ring 406, and the inner ends of the second support tube 402 and the third support tube 403 are connected by a second support connecting ring 408. The outer wall of the third support tube 403 is connected to the first through hole 12. The first support connecting ring 406 is provided with a first protrusion 407 for insertion into the first gap 404, and the second support connecting ring 408 is provided with a second protrusion 409 for insertion into the second gap 405. The inner ends of the first support tube 401, the second support tube 402, and the third support tube 403 are flush, and the outer ends of the first support tube 401 and the second support tube 402 are flush and extend from the outer end of the third support tube 403. A support reinforcing ring 410 is provided on the inner wall of the inner end of the first support tube 401.
[0034] The cryogenic container shell 2 is provided with a cryogenic container outer end cap 21 at its end, and the cryogenic container outer end cap 21 is provided with a second through hole 22 corresponding to the first through hole 12; specifically, the outer side wall of the cryogenic container outer end cap 21 is provided with a second reinforcing plate 23 for sealing the second through hole 22.
[0035] See Figure 2 and Figure 4 As shown, the outer support neck tube 5 is disposed within the second through hole 22, and the inner end of the outer support neck tube 5 extends to the vacuum layer 3 and connects with the inner support neck tube 4. Specifically, the outer support neck tube 5 includes a fourth support tube 51 and a radial support sliding ring 53. The outer wall of the fourth support tube 51 is connected to the second through hole 22, and the outer wall of the inner end of the fourth support tube 51 is provided with a groove 52. The radial support sliding ring 53 is fixedly installed in the groove 52, and the outer circular surface of the radial support sliding ring 53 is slidably connected to the inner support neck tube 4. The radial support sliding ring 53 is made of fiberglass, and the radial support sliding ring 53 has several vent holes 54 to ensure that the vacuum chamber is unobstructed and to maintain a vacuum state equivalent to that between the inner and outer shell containers of the cryogenic container. The outer end of the fourth support tube 51 is flush with the second through hole 22.
[0036] The working principle of this utility model is as follows:
[0037] External heat flows sequentially through the cryogenic container's outer end cap → fourth support tube → radial support sliding ring → first support tube → first support connecting ring → second support tube → second support connecting ring → third support tube → cryogenic container's inner end cap → cryogenic container's inner shell. The S-shaped long path channel design reduces heat by approximately 70% (determined by the thermal conductivity of the fiberglass radial support sliding ring).
[0038] Meanwhile, because the inner shell of the cryogenic container is filled with cryogenic liquid medium, after the external heat is transferred from the outer shell to the inner shell, the inner shell will shrink by about 3‰. The radial support sliding ring design allows for free axial movement, ensuring the insulation effect.
[0039] In the description of this specification, references to terms such as "an embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. Illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0040] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions based on this utility model using techniques known in the art all fall within the protection scope of this utility model and should be defined by the claims.
Claims
1. A long-path channel insulation structure device for vehicle-mounted LNG cylinders, comprising a cryogenic inner shell container (1) for storing cryogenic liquid medium (14) and a cryogenic outer shell container (2) disposed outside the cryogenic inner shell container (1), wherein a vacuum layer (3) is provided between the cryogenic inner shell container (1) and the cryogenic outer shell container (2), characterized in that: It also includes a support for the inner cervical canal (4) and a support for the outer cervical canal (5); The end of the cryogenic container inner shell container (1) is provided with a cryogenic container inner head (11), and the cryogenic container inner head (11) is provided with a first through hole (12). A vacuum cover (13) adapted to the first through hole (12) is provided on the inner side of the cryogenic container inner head (11). The inner neck tube (4) is disposed in the first through hole (12), and the inner end of the inner neck tube (4) extends into the vacuum cavity of the vacuum cover (13), and the outer end of the inner neck tube (4) extends into the vacuum layer (3); the inner neck tube (4) is provided with an S-shaped long path channel for the conduction of cold energy of the cryogenic liquid medium (14). The end of the cryogenic container shell container (2) is provided with a cryogenic container outer end cap (21), and the cryogenic container outer end cap (21) is provided with a second through hole (22) corresponding to the first through hole (12); The outer neck tube (5) is disposed in the second through hole (22), and the inner end of the outer neck tube (5) extends to the vacuum layer (3) and is connected to the inner neck tube (4).
2. The long-path channel insulation structure device for vehicle-mounted LNG cylinders according to claim 1, characterized in that: The inner neck tube (4) includes a first support tube (401), a second support tube (402) and a third support tube (403) arranged sequentially from the inside to the outside. There is a first gap (404) between the first support tube (401) and the second support tube (402) and a second gap (405) between the second support tube (402) and the third support tube (403). The outer ends of the first support tube (401) and the second support tube (402) are connected by a first support connecting ring (406). The inner ends of the second support tube (402) and the third support tube (403) are connected by a second support connecting ring (408). The outer wall of the third support tube (403) is connected to the first through hole (12).
3. The long-path channel insulation structure device for vehicle-mounted LNG cylinders according to claim 2, characterized in that: The first support connecting ring (406) is provided with a first protrusion (407) for insertion into the first gap (404), and the second support connecting ring (408) is provided with a second protrusion (409) for insertion into the second gap (405).
4. The long-path channel insulation structure device for vehicle-mounted LNG cylinders according to claim 2, characterized in that: The inner ends of the first support tube (401), the second support tube (402) and the third support tube (403) are flush, and the outer ends of the first support tube (401) and the second support tube (402) are flush and extend from the outer end of the third support tube (403).
5. The long-path channel insulation structure device for vehicle-mounted LNG cylinders according to claim 2, characterized in that: The inner wall of the inner end of the first support tube (401) is provided with a support reinforcing ring (410).
6. The long-path channel insulation structure device for vehicle-mounted LNG cylinders according to claim 1, characterized in that: The outer neck tube (5) includes a fourth support tube (51) and a radial support sliding ring (53). The outer wall of the fourth support tube (51) is connected to the second through hole (22), and the outer wall of the inner end of the fourth support tube (51) is provided with a groove (52). The radial support sliding ring (53) is fixedly installed in the groove (52), and the outer circular surface of the radial support sliding ring (53) is slidably connected to the inner neck tube (4).
7. The long-path channel insulation structure device for vehicle-mounted LNG cylinders according to claim 6, characterized in that: The radial support sliding ring (53) is made of fiberglass and has several vent holes (54).
8. The long-path channel insulation structure device for vehicle-mounted LNG cylinders according to claim 6, characterized in that: The outer end of the fourth support tube (51) is flush with the second through hole (22).
9. The long-path channel insulation structure device for vehicle-mounted LNG cylinders according to claim 1, characterized in that: The outer wall of the inner end cap (11) of the cryogenic container is provided with a first reinforcing plate (15) around the first through hole (12).
10. The long-path channel insulation structure device for vehicle-mounted LNG cylinders according to claim 1, characterized in that: The outer wall of the cryogenic container outer end cap (21) is provided with a second reinforcing plate (23) for sealing the second through hole (22).