Low-temperature storage tank adiabatic vacuum sandwich structure

Abstract

The utility model discloses a kind of low-temperature storage tank heat-insulating vacuum sandwich structure, it is related to low-temperature storage tank technical field, including tank body, the tank body bottom is fixedly connected with two symmetrical distribution's support base;The tank body three-layer composite structure, and tank body three-layer composite structure is formed vacuum cavity and cooling chamber respectively, the vacuum cavity is located cooling chamber outside, and vacuum cavity inside is installed with the support net of hexagonal honeycomb arrangement. This kind of low-temperature storage tank heat-insulating vacuum sandwich structure, adopt vacuum cavity heat exchange cooling chamber double-layer composite structure, combine hexagonal honeycomb support net, effectively reduce heat conduction, improve the heat preservation performance of storage tank, so that internal liquefied gas can long-term keep low-temperature state. Even if vacuum cavity is partially impacted or punctured, the stability of overall vacuum environment can still be guaranteed by the honeycomb-shaped independent cavity of independent sealing, ensure that storage tank still has excellent heat-insulating effect under extreme conditions.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic storage tank technology, specifically to a cryogenic storage tank insulation vacuum sandwich structure. Background Technology

[0002] Cryogenic storage tanks are devices specifically designed for storing cryogenic liquids and are commonly found in industries such as chemical, energy, liquefied natural gas, liquid nitrogen, and liquid oxygen.

[0003] To achieve the above functions, a prior art Chinese patent (publication number: CN202613041U) discloses a cryogenic storage tank, belonging to the field of sealing. This cryogenic storage tank includes an outer cylinder and an inner cylinder, which form an insulating space. A vacuum device is installed at the upper end of the outer cylinder, and a vacuum-drawing device is located in the middle of the bottom end of the outer cylinder. Aluminum foil is wrapped around the outer wall of the inner cylinder, and several saddle supports are located at the bottom of the inner cylinder, extending to the outside of the outer cylinder. By setting multiple saddle supports, this cryogenic storage tank provides significant support, improving its safety during transportation. The insulation method employs multi-layer winding, with aluminum foil wrapped in the interlayers but not completely filling them. After vacuuming the interlayers, thermal insulation is achieved. This cryogenic storage tank has advantages such as good cryogenic insulation, good support strength, ease of use, high loading rate, safety and reliability, high purity of stored gas, high vacuum degree, and long vacuum life.

[0004] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation: When transporting liquefied gases, cryogenic storage tanks have high internal pressure. Generally, the strength of the cryogenic storage tank is improved by reinforcing its outer side and heat preservation is achieved through insulation layers. However, when the cryogenic storage tank is damaged by external impact, the pressure balance and heat preservation effect of its outer shell will be greatly affected. Utility Model Content

[0005] The purpose of this invention is to provide a vacuum sandwich structure for thermal insulation of cryogenic storage tanks, so as to solve the problem in the background art that when cryogenic storage tanks are damaged by external impacts, the pressure balance and thermal insulation effect of their outer shells are greatly affected.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature storage tank insulation vacuum jacket structure, including a tank body, wherein two symmetrically distributed support bases are fixedly connected to the bottom of the tank body;

[0007] The tank has a three-layer composite structure, which forms a vacuum chamber and a cooling chamber, respectively. The vacuum chamber is located outside the cooling chamber, and a support mesh arranged in a regular hexagonal honeycomb pattern is installed inside the vacuum chamber.

[0008] The cooling chamber is equipped with an active cooling structure that cools the inside of the tank.

[0009] Preferably, the outer and inner sides of the support mesh are fixedly connected to the inner wall of the vacuum chamber, and the support mesh divides the interior of the vacuum chamber into independent sealed honeycomb-shaped independent cavities, each of which is equipped with an independent vacuum monitoring sensor.

[0010] Preferably, the top of the tank is fixedly connected to two symmetrically distributed flanges, which are connected to the interior of the cooling chamber through a flow guide channel, and one end of the tank is equipped with equidistant connecting pipes.

[0011] Preferably, the bottom of the tank is fixedly connected to two symmetrically distributed guide pipes, which are connected to the interior of the cooling chamber, and the ends of the guide pipes are equipped with connectors.

[0012] Preferably, the active cooling structure includes cooling pipes fixedly connected inside the cooling chamber, and the cooling pipes are distributed in a spiral shape inside the cooling chamber.

[0013] Preferably, the cooling chamber is fixedly connected with spirally distributed support bars, and the support bars and cooling pipes are staggered.

[0014] Preferably, the inner side of the support bar is provided with equidistant connecting holes, which are distributed along the inner curve of the support bar and connect the two sides of the support bar to each other.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This cryogenic storage tank features a vacuum jacketed insulation structure with a double-layer composite structure of a vacuum chamber heat exchange and cooling chamber, combined with a hexagonal honeycomb support mesh. This effectively reduces heat conduction, improves the tank's insulation performance, and allows the internal liquefied gas to maintain a low temperature for extended periods. Even if the vacuum chamber is subjected to localized impact or puncture, the independently sealed honeycomb chambers ensure the stability of the overall vacuum environment, guaranteeing excellent insulation performance even under extreme conditions.

[0017] The cooling pipes, combined with the cooling medium inside the cooling chamber, utilize a spiral distribution structure to increase the heat exchange area, allowing the refrigerant to quickly carry away heat during evaporation and achieve efficient cooling. Connecting holes on the support bars optimize the coolant flow path, preventing uneven localized temperatures and ensuring more uniform cooling across the entire tank, thereby improving the stability and safety of cryogenic storage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the tank body of this utility model;

[0020] Figure 3 This is a schematic diagram of the support mesh structure of this utility model;

[0021] Figure 4 This is a partial structural diagram of the support net of this utility model;

[0022] Figure 5 This is a schematic diagram of the cooling pipe structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the support strip structure of this utility model.

[0024] In the diagram: 1. Tank body; 2. Support base; 3. Vacuum chamber; 4. Cooling chamber; 5. Support net; 6. Independent chamber; 7. Connecting pipe; 8. Flange; 9. Guide pipe; 10. Connector; 11. Cooling pipe; 12. Support bar; 13. Connecting hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1 - Figure 6 This utility model provides the following technical solution: a low-temperature storage tank with a vacuum jacket structure, comprising a tank body 1, with two symmetrically distributed support bases 2 fixedly connected to the bottom of the tank body 1; the tank body 1 has a three-layer composite structure, and the three-layer composite structure of the tank body 1 respectively forms a vacuum chamber 3 and a cooling chamber 4, the vacuum chamber 3 is located outside the cooling chamber 4, and a support mesh 5 arranged in a regular hexagonal honeycomb pattern is installed inside the vacuum chamber 3; the outer and inner sides of the support mesh 5 are fixedly connected to the inner wall of the vacuum chamber 3, and the support mesh 5 divides the inside of the vacuum chamber 3 into independently sealed honeycomb independent cavities 6, each independent cavity 6 is equipped with an independent vacuum monitoring sensor; two symmetrically distributed flanges 8 are fixedly connected to the top of the tank body 1, the flanges 8 are connected to the inside of the cooling chamber 4 through a flow guide channel, and a connecting pipe is installed at an equidistant distance at one end of the tank body 1; two symmetrically distributed guide pipes 9 are fixedly connected to the bottom of the tank body 1, and the guide pipes 9 are connected to the inside of the cooling chamber 4, and a connector 10 is installed at the end of the guide pipe 9.

[0027] During use, liquefied gas is first filled into the tank 1 through the connecting pipe 7. At this time, the liquefied gas inside the tank 1 will exert uniform pressure on the inner wall of the tank 1, so that the storage tank can withstand the internal pressure and maintain a stable shape. In order to prevent the heat of the external environment from affecting the temperature of the liquefied gas inside the tank 1, this utility model designs a double-layer composite heat insulation structure composed of a vacuum chamber 3 and a cooling chamber 4.

[0028] The vacuum chamber 3 is in a high vacuum state, which effectively reduces the heat transferred by the air medium, reduces the heat conduction effect, and improves the heat preservation capacity of the storage tank; the cooling chamber 4 is filled with cooling medium, which can further isolate the influence of ambient temperature changes on the inside of the tank 1, so that the storage tank can maintain a low temperature state for a long time.

[0029] When the tank body 1 is impacted, the impact force acts directly on the vacuum chamber 3. At this time, because the vacuum chamber 3 is equipped with a hexagonal honeycomb-shaped support mesh 5, this structure not only provides support but also effectively disperses the impact force from the outside, reducing the impact on the overall structure of the storage tank and thus improving the tank's impact resistance. If the outer wall of the tank body 1 deforms due to a strong impact, the support mesh 5 can further bear and disperse the impact force, preventing it from concentrating on a certain area, thereby avoiding localized structural damage that could lead to the failure of the entire tank.

[0030] Furthermore, because the vacuum chamber 3 is divided into multiple independent chambers 6 by the support mesh 5, even if one independent chamber 6 is damaged or punctured due to impact and loses its vacuum state, it will not affect the function of other independent chambers 6, thus ensuring that the vacuum chamber 3 as a whole still has good thermal insulation performance. At the same time, the support mesh 5 can also strengthen the tank structure, so that even if there is a local puncture or impact, it will not affect the stability of the entire tank body 1, further improving the safety and service life of the tank.

[0031] Example 2: Based on Example 1, an active cooling structure is also disclosed, the specific structure of which is as follows: The active cooling structure includes a cooling pipe 11 fixedly connected inside the cooling chamber 4, and the cooling pipe 11 is spirally distributed inside the cooling chamber 4; a spirally distributed support strip 12 is fixedly connected inside the cooling chamber 4, and the support strip 12 and the cooling pipe 11 are staggered; the inner side of the support strip 12 is provided with equidistantly distributed connecting holes 13, and the connecting holes 13 are distributed along the inner curve of the support strip 12, and the connecting holes 13 connect the two sides of the support strip 12 to each other.

[0032] After the liquefied gas is filled into the tank 1, an active cooling structure can be used to assist in cooling the temperature inside the tank 1.

[0033] First, the guide pipe 9 is connected to the external coolant supply equipment via connector 10. After the cooling system is started, coolant enters the cooling chamber 4 from the guide pipe 9 and gradually fills the entire cooling chamber 4. The coolant completely submerges the cooling pipe 11 inside the cooling chamber 4, allowing the cooling pipe 11 to fully exert its cooling effect. At the same time, both ends of the cooling pipe 11 are connected to the refrigerant circulation equipment, allowing the refrigerant to flow inside the cooling pipe 11. During the process of the refrigerant flowing through the cooling pipe 11, the refrigerant will continuously evaporate, carrying away a large amount of heat, thereby achieving deep cooling of the inside of the tank 1.

[0034] Furthermore, the spiral distribution of the cooling pipes 11, interspersed with the spiral support bars 12, helps to increase the heat exchange area and improve cooling efficiency. Simultaneously, the connecting holes 13 on the support bars 12 ensure sufficient flow of coolant within the cooling chamber 4, effectively avoiding uneven local temperatures and further optimizing the cooling effect. In summary, this active cooling structure effectively reduces the temperature of the liquefied gas inside the storage tank, extends the storage time of the liquefied gas, and improves the insulation performance of the storage tank, enabling it to maintain stable operation even in extreme low-temperature environments, thereby ensuring efficient application in industrial production, energy storage, and other scenarios.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cryogenic storage tank with a vacuum jacket structure, comprising a tank body (1), wherein two symmetrically distributed support bases (2) are fixedly connected to the bottom of the tank body (1); Its features are: The tank (1) has a three-layer composite structure, and the three-layer composite structure of the tank (1) forms a vacuum chamber (3) and a cooling chamber (4) respectively. The vacuum chamber (3) is located outside the cooling chamber (4), and a support mesh (5) arranged in a regular hexagonal honeycomb pattern is installed inside the vacuum chamber (3). The cooling chamber (4) is equipped with an active cooling structure that cools the inside of the tank (1).

2. The cryogenic storage tank insulation vacuum sandwich structure according to claim 1, characterized in that: The outer and inner sides of the support net (5) are fixedly connected to the inner wall of the vacuum cavity (3), and the support net (5) divides the interior of the vacuum cavity (3) into independent sealed honeycomb-shaped independent cavities (6), each of which is equipped with an independent vacuum monitoring sensor.

3. The cryogenic storage tank insulation vacuum sandwich structure according to claim 1, characterized in that: The top of the tank (1) is fixedly connected to two symmetrically distributed flanges (8). The flanges (8) are connected to the interior of the cooling chamber (4) through a flow guide channel, and a connecting pipe (7) with equal spacing is installed at one end of the tank (1).

4. The cryogenic storage tank insulation vacuum sandwich structure according to claim 1, characterized in that: The bottom of the tank (1) is fixedly connected to two symmetrically distributed guide pipes (9), and the guide pipes (9) are connected to the interior of the cooling chamber (4), and the end of the guide pipes (9) is equipped with a connector (10).

5. The cryogenic storage tank insulation vacuum sandwich structure according to claim 1, characterized in that: The active cooling structure includes a cooling pipe (11) fixedly connected inside the cooling chamber (4), and the cooling pipe (11) is spirally distributed inside the cooling chamber (4).

6. The cryogenic storage tank insulation vacuum sandwich structure according to claim 5, characterized in that: The cooling chamber (4) is fixedly connected with a spirally distributed support bar (12), and the support bar (12) and the cooling pipe (11) are staggered.

7. The cryogenic storage tank insulation vacuum sandwich structure according to claim 6, characterized in that: The inner side of the support bar (12) is provided with equidistant connecting holes (13), and the connecting holes (13) are distributed along the inner curve of the support bar (12), and the connecting holes (13) connect the two sides of the support bar (12) to each other.

Images