Modular carriage cold storage device

Abstract

The application discloses a kind of modularization car compartment cold storage devices, comprising: equipment frame, several cold storage pipes, several car compartment wall heat pipes and several crashproof sleeve;Several cold storage pipes are detachably connected with equipment frame;Equipment frame is provided with several upper fixed holes and several lower fixed holes corresponding to the upper fixed hole;The both ends of crashproof sleeve are fixedly connected with equipment frame, and crashproof sleeve is externally sleeved on car compartment wall heat pipe;Several convection heat exchange holes are formed in the side wall of crashproof sleeve;The cold storage pipe and car compartment wall heat pipe are detachably arranged, and the temperature uniformity of the car compartment and the cold storage pipe charging and discharging rate are improved.The type of low-temperature phase change material in the cold storage pipe and the laying quantity of the cold storage pipe are adjusted, the temperature and the heat preservation time of the car compartment can be accurately controlled, and the problem of slow charging speed and difficult control of cold storage capacity of the cold storage device of refrigerated transport equipment is solved.

Description

Technical Field

[0001] This invention relates to the field of refrigerated transportation technology, specifically to a modular cold storage device for a vehicle compartment. Background Technology

[0002] As people's living standards continue to improve, the requirements for the safety and quality of fresh food are getting higher and higher. In the traditional cold chain transportation process, the refrigerated environment of the refrigerated truck is the weakest link in the cold chain transportation process. It is easily affected by environmental interference, which can affect the temperature inside the refrigerated truck.

[0003] Currently, cold chain transportation mainly relies on diesel engine-driven vapor compression systems, which are a major source of carbon and particulate matter emissions. The high energy consumption, low energy conversion rate, and heavy weight of these engines severely hinder the development of the cold chain transportation industry. To save energy, cold storage technology is gradually being applied in refrigerated transportation. It utilizes the high latent heat properties of phase change materials (PCMs) and uses off-peak electricity at night to cool refrigerated truck compartments or cold storage facilities. During operation, the PCMs exchange heat with the air in the truck compartment, absorbing heat and maintaining the temperature inside the compartment at a low level. This is an environmentally friendly, energy-saving, and low-cost cold chain transportation technology.

[0004] However, existing refrigerated transport equipment is mostly integrated with the carriage, which has disadvantages such as relying on external mechanical refrigeration systems for cooling and slow cooling speed.

[0005] Chinese utility model patent (application number: CN202221067636.4) discloses a cold storage device and a cold chain transportation device, comprising: the cold storage device includes a cold storage module and a cold storage box, the cold storage box has an opening at the top and a module limiting member on its inner peripheral wall, at least one cold storage module can be placed into or removed from the inner cavity of the cold storage box through the top opening, the module limiting member can limit the direction of the cold storage module when it is placed and removed, and can also restrict the movement of the cold storage module in other directions, and when there are two or more cold storage modules in the inner cavity, all cold storage modules are arranged at intervals. The cold storage device and cold chain transportation device of this application can remove the cold storage module individually for cold charging, or remove it together with the cold storage box for cold charging, thereby making cold charging more convenient and faster, and eliminating the need for a separate refrigeration device, thus reducing costs, and can be applied to various cold chain environments as needed.

[0006] However, this product still has the following drawbacks: the heat exchange area between the cold storage module and the air is relatively small. Even with low cooling efficiency, the temperature at locations far from the cold storage module can exceed standard requirements. Furthermore, when goods are stacked in the cargo compartment, the obstruction of the goods can impede the flow of cold air, potentially leading to partial or complete damage to the goods and causing significant economic losses. Summary of the Invention

[0007] The purpose of this invention is to disclose a modular cold storage device for train carriages, which solves the problems of low heat exchange efficiency with air and difficulty in uniformly and quickly cooling the entire carriage in existing modular cold storage devices.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A modular cold storage device for a train carriage includes: an equipment frame that can be fixedly connected to the carriage, a plurality of cold storage pipes, a plurality of carriage wall heat pipes, and a plurality of anti-collision sleeves; the plurality of cold storage pipes are detachably connected to the equipment frame; the equipment frame has a plurality of upper fixing holes and a plurality of lower fixing holes corresponding to the upper fixing holes; the top ends of the plurality of carriage wall heat pipes are inserted into the interior of the plurality of upper fixing holes; the bottom ends of the plurality of carriage wall heat pipes are inserted into the interior of the plurality of lower fixing holes; both ends of the anti-collision sleeves are fixedly connected to the equipment frame, and the anti-collision sleeves are fitted over the exterior of the carriage wall heat pipes; the sidewalls of the anti-collision sleeves have a plurality of convection heat exchange holes.

[0010] Optionally, the bottom of the equipment frame is fixedly provided with a plurality of cold storage pipe mounting slots for fixing cold storage pipes; the cold storage pipe mounting slots include: a first limiting plate, a second limiting plate, a third limiting plate, and a fourth limiting plate; the first limiting plate and the second limiting plate are arranged opposite to each other, and one end of the first limiting plate and one end of the second limiting plate are both fixedly connected to the equipment frame; the third limiting plate and the fourth limiting plate are arranged opposite to each other, and the other end of the third limiting plate and the other end of the fourth limiting plate are both fixedly connected to the equipment frame; the first limiting plate, the second limiting plate, the third limiting plate, and the fourth limiting plate are all L-shaped limiting plates.

[0011] Optionally, wear-resistant pads are fixedly provided on the inner walls of the first limiting plate, the second limiting plate, the third limiting plate, and the fourth limiting plate.

[0012] Optionally, the heat pipes on the carriage walls and the cold storage pipes are arranged alternately.

[0013] Optionally, the cold storage tube includes a cold storage tube shell; an enhanced heat transfer component is fixedly installed inside the cold storage tube shell; the cold storage tube shell is also filled with a cold storage agent; first gaskets are respectively provided at both ends of the cold storage tube shell; and a second gasket is fixedly installed at the bottom of the cold storage tube shell.

[0014] Optionally, the enhanced heat transfer component includes: at least one heat-conducting fin and several heat-conducting pipes;

[0015] The edge of the heat-conducting fin is fixedly connected to the inner wall of the cold storage tube shell; the heat-conducting fin is provided with several limiting holes; several heat-conducting tubes are inserted into the interior of several limiting holes in a corresponding manner.

[0016] Optionally, two heat-conducting fins are fixedly installed inside the shell of the cold storage pipe; the two heat-conducting fins are arranged in parallel to each other.

[0017] Optionally, it also includes a heat transfer handle; the outer shell of the cold storage tube has a groove; both ends of the heat transfer handle are fixedly connected to the side wall of the groove; the handle has a plurality of heat dissipation corrugated grooves; the handle also has a heat pipe protection hole for accommodating the heat conduction tube.

[0018] Optionally, the equipment frame includes four longitudinally arranged first metal beams, four transversely arranged second metal beams, and four vertically arranged third metal beams; the four first metal beams, the four second metal beams, and the four third metal beams are connected end to end to form a cuboid frame.

[0019] Optionally, the first metal beam, the second metal beam, and the third metal beam are all hollow steel.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] This invention provides a modular cold storage device for a train carriage, comprising: an equipment frame that can be fixedly connected to the carriage, a plurality of cold storage pipes, a plurality of carriage wall heat pipes, and a plurality of anti-collision sleeves; the plurality of cold storage pipes are detachably connected to the equipment frame; the equipment frame has a plurality of upper fixing holes and a plurality of lower fixing holes corresponding to the upper fixing holes; the top ends of the plurality of carriage wall heat pipes are inserted into the interior of the plurality of upper fixing holes; the bottom ends of the plurality of carriage wall heat pipes are inserted into the interior of the plurality of lower fixing holes; both ends of the anti-collision sleeves are fixedly connected to the equipment frame, and the anti-collision sleeves are fitted over the exterior of the carriage wall heat pipes; the sidewalls of the anti-collision sleeves have a plurality of convection heat exchange holes; in summary, this invention improves the temperature uniformity of the carriage and the charging and releasing rate of the cold storage pipes by setting detachable cold storage pipes and carriage wall heat pipes. By adjusting the type of low-temperature phase change material inside the cold storage pipe and the number of cold storage pipes laid, it is possible to achieve precise control of the temperature of the compartment and the insulation time, thus solving the problems of difficult control of the cold storage capacity and slow charging speed of the cold storage device in refrigerated transport equipment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of a modular cold storage device for a train carriage according to the present invention;

[0024] Figure 2 This is a cross-sectional schematic diagram of the heat pipe section on the carriage wall;

[0025] Figure 3 yes Figure 2 Enlarged diagram of part A;

[0026] Figure 4 This is a three-dimensional schematic diagram of the cold storage tube in this invention;

[0027] Figure 5 This is a schematic diagram of the internal structure of the cold storage tube;

[0028] Figure 6 yes Figure 5 A schematic diagram of the internal structure cross-section;

[0029] Figure 7 This is a three-dimensional schematic diagram of the cold storage pipe installation groove.

[0030] Figure 8 yes Figure 7 Enlarged diagram of part B;

[0031] Figure 9 This is a schematic diagram showing the selection of temperature measurement points in the cold storage tube charging experiment of Example 2;

[0032] Figure 10 This is a data table showing the results of the cold storage tube charging experiment in Example 2;

[0033] Figure 11 This is the temperature change curve of the train carriage in the experimental group of Example 3;

[0034] Figure 12 This is the temperature change curve of the control group carriage in Example 3;

[0035] In the diagram, 1. Equipment frame; 11. Upper fixing hole; 12. Lower fixing hole; 13. First limiting plate; 14. Second limiting plate; 15. Anti-wear gasket; 16. Heat transfer handle; 161. Heat dissipation corrugated groove; 162. Heat pipe protection hole; 163. Groove; 17. First metal beam; 18. Second metal beam; 19. Third metal beam; 2. Cold storage pipe; 21. Cold storage pipe shell; 22. First gasket; 23. Second gasket; 24. Heat-conducting fins; 25. Heat-conducting pipe; 3. Heat pipe on the carriage wall; 4. Anti-collision sleeve; 41. Convection heat exchange hole. Detailed Implementation

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. 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 indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0037] In this invention, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] Example 1

[0040] like Figure 1-8A modular cold storage device for a train carriage, as shown, includes: an equipment frame 1 that can be fixedly connected to the carriage, a plurality of cold storage pipes 2, a plurality of carriage wall heat pipes 3, and a plurality of anti-collision sleeves 4; the plurality of cold storage pipes 2 are detachably connected to the equipment frame 1; the equipment frame 1 has a plurality of upper fixing holes 11 and a plurality of lower fixing holes 12 that correspond one-to-one with the upper fixing holes 11; the top ends of the plurality of carriage wall heat pipes 3 are inserted into the interior of the plurality of upper fixing holes 11; the bottom ends of the plurality of carriage wall heat pipes 3 are inserted into the interior of the plurality of lower fixing holes 12; both ends of the anti-collision sleeves 4 are fixedly connected to the equipment frame 1, and the anti-collision sleeves 4 are sleeved on the outside of the carriage wall heat pipes 3; the side wall of the anti-collision sleeves 4 has a plurality of convection heat exchange holes 41.

[0041] Specifically, in this application, to improve the flow of cold air within the refrigerated truck compartment and reduce temperature differences between different locations within the compartment, a modular truck compartment cold storage device is proposed. The equipment frame 1 is fixedly connected to the inner wall of the compartment, providing positioning for the device. The cold storage pipe 2 is filled with a cold storage agent, enabling heat exchange with the outside environment for cold storage or refrigeration. The truck compartment wall heat pipe 3, filled with a corresponding working liquid, can rapidly transfer heat to different locations within the compartment through evaporation and condensation, thereby achieving more uniform temperature distribution across different areas. A crash protection sleeve 4 protects the truck compartment wall heat pipe 3 from deformation and damage caused by impacts from cargo within the compartment. The convection heat exchange holes 41 on the crash protection sleeve 4 increase the contact area between the internal heat pipes and the air inside the compartment, preventing heat exchange from being hindered by the crash protection sleeve 4.

[0042] This application incorporates detachable cold storage pipes 2 at the bottom of the equipment frame 1. The number of cold storage pipes 2 can be adjusted according to actual needs, thereby controlling the temperature inside the compartment. After the cold storage pipes 2 absorb heat, the low-temperature environment inside the compartment can be maintained by replacing the cold storage pipes 2. This solves the problems of difficult-to-control cold storage capacity and slow cooling speed of refrigerated transport equipment's cold storage devices, preventing cold chain breaks due to insufficient temperature. Furthermore, heat pipes 3 are installed on the side walls of the equipment frame 1, utilizing the heat conduction effect of the heat pipes to control the temperature more evenly in different locations within the compartment.

[0043] Furthermore, the bottom of the equipment frame 1 is fixedly provided with a plurality of cold storage pipe 2 mounting slots for fixing the cold storage pipe 2; the cold storage pipe 2 mounting slots include: a first limiting plate 13, a second limiting plate 14, a third limiting plate and a fourth limiting plate; the first limiting plate 13 and the second limiting plate 14 are arranged opposite to each other, and one end of the first limiting plate 13 and one end of the second limiting plate 14 are fixedly connected to the equipment frame 1; the third limiting plate and the fourth limiting plate are arranged opposite to each other, and the other end of the third limiting plate and the other end of the fourth limiting plate are fixedly connected to the equipment frame 1; the first limiting plate 13, the second limiting plate 14, the third limiting plate and the fourth limiting plate are all L-shaped limiting plates.

[0044] Furthermore, wear-resistant pads 15 are fixedly provided on the inner walls of the first limiting plate 13, the second limiting plate 14, the third limiting plate, and the fourth limiting plate.

[0045] In this application, the first limiting plate 13, the second limiting plate 14, the third limiting plate, and the fourth limiting plate are all made of L-shaped steel, with anti-wear gaskets 15 attached to their inner walls to prevent wear on the cold storage pipe 2 from causing refrigerant leakage and contaminating food. Furthermore, the limiting plates and the anti-wear gaskets 15 are glued together, creating a gap below the cold storage pipe 2, thereby enhancing gas flow at the bottom of the equipment frame 1 and ensuring sufficient heat exchange between the cold storage device and the ambient air. The first limiting plate 13 and the second limiting plate 14 are positioned opposite each other, and their widths are compatible with the cold storage pipe 2, clamping the cold storage pipe 2 between the limiting plates. The third and fourth limiting plates are respectively positioned opposite the first limiting plate 13 and the second limiting plate 14, clamping the other end of the cold storage pipe 2. The first limiting plate 13, the second limiting plate 14, the third limiting plate, and the fourth limiting plate together form the mounting groove for the cold storage pipe 2, limiting its movement. Different numbers of cold storage pipes 2 can be placed as needed to achieve different weights of cold storage agent carried during transportation, effectively solving the problems of the current cold storage transportation equipment, such as the inability to change the type of cold storage agent, the inability to change the filling amount, and the long filling time.

[0046] Furthermore, the heat pipes 3 on the carriage walls and the cold storage pipes 2 are arranged alternately.

[0047] Furthermore, the cold storage tube 2 includes a cold storage tube shell 21; an enhanced heat transfer component is fixedly installed inside the cold storage tube shell 21; the cold storage tube shell 21 is also filled with a cold storage agent; first gaskets 22 are respectively provided at both ends of the cold storage tube shell 21; and a second gasket 23 is fixedly installed at the bottom of the cold storage tube shell 21.

[0048] The first gasket 22 provides cushioning for both ends of the cold storage tube 2, and the second gasket 23 provides cushioning for the bottom surface of the cold storage tube 2, preventing deformation or damage to the cold storage tube 2 due to impact. Both the first gasket 22 and the second gasket 23 are bonded to the cold storage tube 2. The outer shell 21 of the cold storage tube is made of aluminum, copper, brass, or other materials with good corrosion resistance and thermal conductivity, and has a hollow structure. The hollow structure has filling holes to facilitate the filling of the cold storage strip with refrigerant and the discharge of refrigerant from the cold storage strip through the filling holes. To ensure safety, the refrigerant is a low-temperature, non-toxic refrigerant with different phase change temperatures.

[0049] Furthermore, the enhanced heat transfer component includes: at least one heat-conducting fin 24 and several heat-conducting pipes 25; the edge of the heat-conducting fin 24 is fixedly connected to the inner sidewall of the cold storage pipe shell 21; several limiting holes are provided on the heat-conducting fin 24; several heat-conducting pipes 25 are inserted into the interior of several limiting holes in a corresponding manner.

[0050] Furthermore, two heat-conducting fins 24 are fixedly disposed inside the cold storage tube shell 21; the two heat-conducting fins 24 are arranged in parallel to each other.

[0051] The heat-conducting fins 24 include transversely arranged strip-shaped portions and toothed portions on both sides of the fins. The toothed portions can meet the flow requirements of the refrigerant, avoiding complete blockage of the refrigerant flow. Furthermore, the edges of the toothed portions are not connected to the inner wall of the refrigerant tube, preventing fin deformation due to refrigerant solidification during the refrigerant storage process. The heat-conducting fins 24 are made of symmetrical rake-shaped structures using materials with good corrosion resistance and thermal conductivity, such as aluminum, copper, and brass. The two ends of the long axis of the two transversely integrated fins are non-detachably connected to the side end faces of the enhanced heat transfer refrigerant tube 2, thereby increasing the heat transfer area and enhancing the heat transfer capacity of the equipment. The two ends of the short axis of the transversely integrated toothed fins do not contact the outer shell 21 of the refrigerant tube. To facilitate heat pipe fixing, the transversely integrated fins are provided with several heat pipe mounting holes at equal intervals.

[0052] The evaporation end of the heat pipe 25 is at the top and is installed on the heat-conducting fins 24 through the limiting hole. In order to improve the heat transfer efficiency between the heat pipe 25 and the heat-conducting fins 24, the heat pipe 25 and the heat pipe mounting hole are welded together to meet the fixing requirements and enhance the heat transfer efficiency. Since there is a groove 163 at the position of the heat transfer handle 16, the height is low. Therefore, the top of the heat pipe 25 located at this position extends through the outer shell into the interior of the groove 163, forming an exposed structure of the built-in heat pipe. This enhances the heat exchange between the heat pipe and the air in the carriage, accelerates the cooling rate of the carriage, improves the temperature uniformity of the carriage, and solves the problem of slow cooling speed in ordinary cold storage carriages.

[0053] Furthermore, it also includes a heat transfer handle 16; a groove 163 is provided on the outer shell of the cold storage pipe 2; the two ends of the heat transfer handle 16 are respectively fixedly connected to the side wall of the groove 163; a plurality of heat dissipation corrugated grooves 161 are provided on the handle; and a heat pipe protection hole 162 for accommodating the heat conduction pipe 25 is also provided on the handle.

[0054] The heat dissipation corrugated groove 161 can increase the heat transfer area, reduce the thermal resistance of convective heat transfer, enhance the heat transfer capacity of the equipment, and increase the friction of the handle to prevent it from slipping when gripped due to condensation on the surface, thus preventing damage to the cold storage tube 2. The heat pipe protection hole 162 can protect the heat conduction tube 25 extending into the groove 163, preventing the handle from interfering with the heat conduction tube 25.

[0055] Furthermore, the equipment frame 1 includes four longitudinally arranged first metal beams 17, four transversely arranged second metal beams 18, and four vertically arranged third metal beams 19; the four first metal beams 17, the four second metal beams 18, and the four third metal beams 19 are connected end to end to form a cuboid frame.

[0056] Furthermore, the first metal beam 17, the second metal beam 18, and the third metal beam 19 are all hollow steel.

[0057] Other structures in Embodiment 1 are described in the prior art.

[0058] In summary, this application proposes a modular cold storage device for refrigerated transport vehicles. By incorporating detachable cold storage pipes 2 and heat pipes 3 on the vehicle walls, the temperature uniformity of the vehicle compartment and the charging and releasing rate of the cold storage pipes 2 are improved. By adjusting the type of low-temperature phase change material inside the cold storage pipes 2 and the number of cold storage pipes 2, precise control of the vehicle compartment temperature and insulation time can be achieved, solving the problems of difficult control of cold storage capacity and slow charging speed in cold storage devices for refrigerated transport equipment.

[0059] Example 2

[0060] Furthermore, in Embodiment 2, an experimental scheme is provided to demonstrate the cold storage effect of the device described in Embodiment 1.

[0061] The experimental setup was as follows: the size of the cold storage tube was 0.05m*0.1m*2m; the internal hydrogel cold storage agent loading was 7.8kg; and the inside of the cold storage tube shell was equipped with 6 heat-conducting tubes and two heat-conducting fins.

[0062] The control group was set up as follows: the size of the cold storage tube was 0.05m*0.1m*2m; the internal hydrogel cold storage agent loading was 7.8kg, but the internal cold storage tube in the control group did not contain heat-conducting pipes or heat-conducting fins.

[0063] like Figure 9As shown, three temperature measuring points were arranged on the cross-section along the length of the cold storage tube in the experimental group; similarly, three temperature measuring points were arranged on the cross-section along the length of the cold storage tube in the control group. In this experiment, it can be assumed that the cold storage tube is completely frozen when the temperature data at the geometric center point is the same as the temperature data at the other two measuring points.

[0064] like Figure 10 As shown, the initial temperature of the phase change materials in both the experimental and control groups was 25℃, and they were placed in a -18℃ cold storage for cooling. The freezing times are shown in the table below. The experimental results show that the ordinary heat pipe with built-in hydrogel was completely frozen after 32 hours, while the complete freezing time after adding the enhanced heat transfer component was only 11 hours, increasing the cooling rate by approximately 65%.

[0065] Example 3

[0066] To investigate the effect of the modular cold storage device described in Example 1 on the temperature field inside the carriage, Example 3 was set up.

[0067] In the experimental group: the equipment frame, 75 cold storage pipes, 152 heat pipes on the carriage wall, and 152 anti-collision sleeves were installed in a 40-foot refrigerated container. The 75 cold storage pipes were cooled and then laid on the mounting groove of the restricted enhanced heat transfer cold storage pipe. The dimensions of the 75 cold storage pipes were all 0.05m*0.1m*2m. The internal hydrogel cold storage agent loading was 7.8kg. The interior of each of the 75 cold storage pipes was equipped with 6 heat-conducting pipes and two heat-conducting fins. The total cold storage agent loading in the container was 585kg.

[0068] In the control group, the equipment frame and 75 cold storage pipes were installed inside a 40-foot refrigerated container. The 75 cold storage pipes, after being cooled, were laid on the mounting groove for the restricted, enhanced heat transfer cold storage pipes. The dimensions of each of the 75 cold storage pipes were 0.05m * 0.1m * 2m. The internal hydrogel cold storage agent loading was 7.8kg. In the control group, none of the 75 cold storage pipes contained heat-conducting pipes or fins. The total cold storage agent loading inside the container was 585kg. No heat pipes or anti-collision sleeves were installed on the container walls.

[0069] Temperature measurement point setup: The interior of the refrigerated container was divided into three longitudinal sections at equal intervals along the height of the container. The first section was 0.1m from the top of the container, the second section was 0.1m from the bottom, and the third section was located in the center of the container. Temperature measurement points were placed at the apex, midpoint of each side, and geometric center of each section, for a total of nine measurement points per section. The experiment lasted 60 hours, with data recorded every 5 minutes. The average temperature of each section at each moment was taken, and the data are as follows: Figure 11 , 12As shown, after installing wall heat pipes, anti-collision sleeves, and enhanced heat transfer components inside the cold storage pipes, the cooling rate of the refrigerated container and the temperature drop rate of the upper, middle, and lower sections of the compartment are faster, and the temperature uniformity among the three sections is better, with a greater overlap of the temperature curves.

[0070] This invention is not limited to the above-described embodiments. If any modifications or variations to this invention do not depart from the spirit and scope of this invention, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this invention, then this invention also intends to include such modifications and variations.

Claims

1. A modular cold storage device for a train carriage, characterized in that, include: The equipment frame that can be fixedly connected to the carriage, several cold storage pipes, several carriage wall heat pipes, and several anti-collision sleeves; Several of the aforementioned cold storage tubes are detachably connected to the equipment frame; The equipment frame is provided with several upper fixing holes and several lower fixing holes that correspond one-to-one with the upper fixing holes. The bottom of the equipment frame is fixedly provided with several cold storage pipe mounting slots for fixing cold storage pipes. The top ends of several heat pipes on the car body wall are inserted into several upper fixing holes in a corresponding manner; the bottom ends of several heat pipes on the car body wall are inserted into several lower fixing holes in a corresponding manner. Both ends of the anti-collision sleeve are fixedly connected to the equipment frame, and the anti-collision sleeve is sleeved on the outside of the heat pipe on the carriage wall. The anti-collision sleeve has several convection heat exchange holes on its side wall; The cold storage tube includes: a cold storage tube outer shell; An enhanced heat transfer component is fixedly installed inside the cold storage tube shell; the cold storage tube shell is also filled with a cold storage agent; first gaskets are respectively installed at both ends of the cold storage tube shell; and a second gasket is fixedly installed at the bottom of the cold storage tube shell. It also includes heat transfer handles; The outer shell of the cold storage tube has a groove; both ends of the heat transfer handle are fixedly connected to the side wall of the groove; the heat transfer handle has several heat dissipation corrugated grooves. The heat transfer handle is also provided with a heat pipe protection hole for accommodating the heat pipe.

2. The modular cold storage device for a train carriage according to claim 1, characterized in that, The cold storage pipe mounting groove includes: a first limiting plate, a second limiting plate, a third limiting plate, and a fourth limiting plate; The first limiting plate and the second limiting plate are arranged opposite to each other, and one end of the first limiting plate and one end of the second limiting plate are fixedly connected to the equipment frame; the third limiting plate and the fourth limiting plate are arranged opposite to each other, and the other end of the third limiting plate and the other end of the fourth limiting plate are fixedly connected to the equipment frame. The first limiting plate, the second limiting plate, the third limiting plate and the fourth limiting plate are all L-shaped limiting plates.

3. A modular cold storage device for a train carriage according to claim 2, characterized in that, Wear-resistant pads are fixedly installed on the inner walls of the first limiting plate, the second limiting plate, the third limiting plate, and the fourth limiting plate.

4. A modular cold storage device for a train carriage according to any one of claims 1-3, characterized in that, The heat pipes on the carriage walls and the cold storage pipes are arranged alternately.

5. A modular cold storage device for a train carriage according to claim 1, characterized in that, The enhanced heat transfer component includes: at least one heat-conducting fin and several heat-conducting pipes; The edge of the heat-conducting fin is fixedly connected to the inner wall of the cold storage tube shell; the heat-conducting fin is provided with several limiting holes; several heat-conducting tubes are inserted into the interior of several limiting holes in a corresponding manner.

6. A modular cold storage device for a train carriage according to claim 5, characterized in that, Two heat-conducting fins are fixedly installed inside the outer shell of the cold storage tube; The two heat-conducting fins are arranged in parallel to each other.

7. A modular cold storage device for a train carriage according to claim 1, characterized in that, The equipment frame includes four longitudinally arranged first metal beams, four transversely arranged second metal beams, and four vertically arranged third metal beams. The four first metal beams, the four second metal beams, and the four third metal beams are connected end to end to form a cuboid frame.

8. A modular cold storage device for a train carriage according to claim 7, characterized in that, The first metal beam, the second metal beam, and the third metal beam are all hollow steel.

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