Hot air cover for neck of copious cooling box
By installing a hollow truncated cone-shaped hot air hood at the neck of the cryogenic chamber, the heating area is increased and the hot air loss rate is reduced, thus solving the problems of condensation and icing at the neck of the cryogenic chamber, improving heat transfer efficiency, and preventing material sublimation and blockage.
Patent Information
- Application Number
- CN202422887011.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The neck of the cryogenic chamber suffers from condensation and icing problems due to the inability to heat it effectively, especially since the heating range of the neck heater is limited and cannot cover the entire neck of the container.
A hollow truncated cone structure hot air hood is designed to wrap around the neck of a cryogenic chamber container and connect to the neck heater through a side opening, thereby creating a circulating flow inside the hot air hood, increasing the heating area, reducing the hot air loss rate, and improving heat transfer efficiency.
It effectively prevents icing at the neck of the container, ensuring that the material does not sublimate and cause blockage at the inlet, and improves the heat transfer efficiency of the neck heater.
Smart Images
Figure CN223448746U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of thermodynamics, and particularly relates to a hot air cover for the neck of a cryogenic tank. BACKGROUND
[0002] The upper end of a certain cryogenic tank container is exposed to the atmosphere, and is affected by metal heat transfer. The temperature of the part of the container exposed to the air is obviously lower than the temperature of the plant environment. Water vapor in the air gradually condenses on the upper part of the container to form a certain thickness of frost layer, which hinders heat exchange with the air, so that the temperature of the upper part of the container is further reduced, and a certain thickness of ice layer is formed with the increase of working time.
[0003] At present, the problem of condensation and icing of the neck of the cryogenic tank caused by long-time operation has been considered in the design of the cryogenic tank, and a neck heater is designed. The neck heater is connected with the tank body through a flexible and non-extensible metal sleeve. However, the distance from the connection root of the neck heater and the tank body to the farthest end of the container is about 40 cm. Due to the limitation of the heating air blowing range of the neck heater and the length of the cable, the neck heater can only heat a small part of the container neck, and most of the necks still have serious condensation and icing problems because they cannot be heated. CONTENT OF THE UTILITY MODEL
[0004] The application aims to provide a hot air cover for the neck of a cryogenic tank, which solves the problem of serious condensation and icing of most of the necks of the cryogenic tank in the prior art because they cannot be heated.
[0005] The technical scheme for achieving the purpose of the application is as follows:
[0006] The embodiment of the application provides a hot air cover for the neck of a cryogenic tank, which is a hollow conical frustum structure, and the upper part and the lower part are both provided with openings for wrapping the neck of the cryogenic tank container.
[0007] The side opening of the hot air cover is connected with the neck heater, so that the hot air generated by the neck heater enters the hot air cover.
[0008] Optionally, the hot air cover is a two-flap structure connected by fasteners.
[0009] Optionally, the lower part of the hot air cover is sealed by rubber strips.
[0010] Optionally, the hot air cover is made of metal material, and the outer wall is wrapped with thermal insulation material.
[0011] Optionally, the hot air cover uses tinplate as the skeleton material.
[0012] Optionally, the hot air generated by the neck heater enters the hot air cover at an angle of 40 degrees downward.
[0013] Optionally, the upper diameter of the hot air cover is 140 mm, the lower diameter is 350 mm, and the height is 160 mm.
[0014] The beneficial technical effect of the present application is that:
[0015] The deep cold box neck hot air cover provided by the embodiment of the present application is a hollow conical frustum structure, and the upper part and the lower part are both provided with openings for wrapping the neck of the deep cold box container; the side opening of the hot air cover is connected with the neck heater, so that the hot air generated by the neck heater enters the hot air cover. The embodiment of the present application increases the hot air heating area and reduces the hot air dissipation speed, thereby improving the heat transfer efficiency of the neck heater, effectively preventing the freezing phenomenon of the container neck, and ensuring that the material will not sublimate to cause blockage at the inlet. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 Fig. 1 is a structural schematic diagram of a deep cold box.
[0017] Figure 2 Fig. 4 is a structural schematic diagram of a deep cold box neck hot air cover provided by the embodiment of the present application.
[0018] Figure 3 Fig. 5 is a hot air entering schematic diagram of a deep cold box neck hot air cover provided by the embodiment of the present application.
[0019] Figure 4 Fig. 6 is a hot air circulation schematic diagram formed by a deep cold box neck hot air cover provided by the embodiment of the present application.
[0020] In the drawings:
[0021] 1-container; 2-neck heater; 3-deep cold box; 4-hot air cover. DETAILED DESCRIPTION
[0022] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described in detail below in conjunction with the drawings in the embodiments of the present application. Obviously, the following described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments described in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0023] Referring to Figure 1 Fig. 1 is a structural schematic diagram of a deep cold box.
[0024] The container 1 is placed in the deep cooling box 3, and the temperature of the exposed part of the neck of the container 1 is obviously lower than the temperature of the factory environment, and the water vapor in the air gradually condenses on the upper part of the container to form a certain thickness of frost layer, which hinders the heat exchange with the air, so that the temperature of the upper part of the container is further reduced, and a certain thickness of ice layer is formed with the increase of working time. The neck heater 2 is connected with the box body of the deep cooling box 3 through a flexible and inextensible metal sleeve. However, since the distance from the connection root of the neck heater 2 and the box body of the deep cooling box 3 to the farthest end of the container 1 is about 40 cm, the neck heater can only heat a small part of the neck of the container due to the limitation of the blowing range of the neck heating hot air and the length of the cable, and the most part of the neck cannot be heated and still has a serious problem of condensation and icing.
[0025] In order to solve the problems in the prior art, the embodiment of the present application provides a deep cooling box neck hot air cover.
[0026] Referring to Figure 2 , the figure is a structural schematic diagram of a deep cooling box neck hot air cover provided by the embodiment of the present application.
[0027] The deep cooling box neck hot air cover provided by the embodiment of the present application is a hollow conical frustum structure, and the upper part and the lower part are both provided with openings for wrapping the neck of the container 1 of the deep cooling box 3.
[0028] The side opening of the hot air cover 4 is connected with the neck heater 2, so that the hot air generated by the neck heater 2 enters the hot air cover 4.
[0029] It can be understood that, after the hot air cover 4 is installed on the neck of the container 1, the hot air generated by the neck heater 2 enters the hot air cover 4 at a certain angle, contacts the surface of the container 1 and the deep cooling box 3, is reflected, and then forms a circulation around the neck of the container 1 through the flow limiting of the hot air cover 4. Figure 3 Figure 4 After the circulation is formed, on the one hand, the heat exchange area is increased, and on the other hand, the heat dissipation speed is reduced, so that the heat transfer efficiency between the neck heater 2 and the neck of the container 1 is improved.
[0030] In the embodiment of the present application, the hot air cover 4 increases the heat exchange area and reduces the heat dissipation speed, so that the heat transfer efficiency of the neck heater 2 is improved, and the icing phenomenon of the neck of the container 1 is effectively eliminated, so that the material at the inlet is not sublimed to cause blockage.
[0031] In some possible implementation manners of the embodiment of the present application, in order to facilitate installation and disassembly, the hot air cover 4 is a two-flap structure connected by fasteners.
[0032] In an example, under the premise of meeting the heat transfer efficiency, the lower part of the hot air cover 4 can be sealed by rubber pressing strips.
[0033] In another example, the hot air cover 4 can be made of metal, and the outer wall can be wrapped with thermal insulation material.
[0034] As an example, the hot air cover 4 can use tinplate as the skeleton material.
[0035] In some possible implementation manners of the embodiment of the present application, as shown in Figure 3 The hot air generated by the neck heater 2 enters the hot air cover 4 at an angle of 40 degrees downward.
[0036] In one example, in order to better reduce the heat loss of the heater, the size of the hot air cover 4 is required to be as small as possible while wrapping the neck of the container 1, the upper diameter of the hot air cover 4 can be 140 mm, the lower diameter can be 350 mm, and the height can be 160 mm.
[0037] The specific effects of the neck hot air cover of the cryogenic tank provided by the embodiment of the present application will be described in detail below in combination with a specific example.
[0038] After the flow guide cover was installed on the deep cooling tank of the material preparation system, the light impurity collection system, the intermediate light impurity collection system, and the unloading system of a certain factory, the container neck temperature and the dew condensation situation were observed as follows:
[0039] The container neck of the working deep cooling tank has appeared dew condensation and icing, after cleaning the tank water, the hot air cover is installed, and the container neck with dew condensation does not appear again; the ice of the container with icing gradually melts, and after all the ice melts, the temperature of the container neck gradually rises, and no re-dew condensation occurs; after the hot air cover is installed on the deep cooling tank, the cryogenic tank is put into operation, and since the temperature of the container neck is always higher than the dew point temperature, the container neck does not appear dew condensation.
[0040] The neck hot air cover of the deep cooling tank provided by the embodiment of the present application, which is a hollow conical frustum structure, is provided with openings at the upper and lower parts, and is used for wrapping the neck of the deep cooling tank container; the side opening of the hot air cover is connected with the neck heater, so that the hot air generated by the neck heater enters the hot air cover. The embodiment of the present application increases the heat air heating area and reduces the heat air loss speed, thereby improving the heat transfer efficiency of the neck heater, effectively eliminating the icing phenomenon of the container neck, and ensuring that the material does not sublimate to cause blockage at the inlet.
[0041] The present application has been described in detail in combination with the drawings and the embodiments, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application. The contents not described in detail in the present application can adopt the existing technology.
Claims
1. A deep freezer neck hot air hood, characterized in that: The hot air hood (4) is a hollow truncated cone structure with openings at the top and bottom, and is used to wrap around the neck of the container (1) of the deep freezer (3); The side opening of the hot air hood (4) is connected to the neck heater (2), so that the hot air generated by the neck heater (2) enters the hot air hood (4).
2. The deep freezer neck hot air hood according to claim 1, characterized in that: The hot air hood (4) is a two-flap structure connected by fasteners.
3. The deep freezer neck hot air hood according to claim 1, characterized in that: The lower part of the hot air cover (4) is sealed with a rubber strip.
4. The deep freezer neck hot air hood according to claim 1, characterized in that: The hot air cover (4) is made of metal, and the outer wall is wrapped with heat-insulating material.
5. The deep freezer neck hot air hood according to claim 4, characterized in that: The hot air cover (4) adopts tinplate as the skeleton material.
6. The deep freezer neck hot air hood according to claim 1, characterized in that: The hot air generated by the neck heater (2) enters the hot air hood (4) at an angle of 40 degrees downward.
7. The deep freezer neck hot air hood according to any one of claims 1 to 6, characterized in that: The hot air hood (4) has an upper diameter of 140 mm, a lower diameter of 350 mm, and a height of 160 mm.