Thermal insulation structure for deep sea environment simulation device and temperature control system thereof

Abstract

The application relates to a heat preservation structure for a deep-sea environment simulation device and a temperature control system thereof. The heat preservation structure for the deep-sea environment simulation device comprises a plurality of heat preservation units installed on the outer wall of a container, and the plurality of heat preservation units completely surround the outer wall of the container to heat preserve the container. The structure of a single heat preservation unit comprises a shell and an insulating layer, and an even number of energy coil pipes arranged in a serpentine shape are cooperatively installed on the insulating layer. The energy coil pipes are connected with a refrigeration / heating module, and a sealing strip is installed on the edge of the inner side of the shell. When the heat preservation unit is cooperatively installed with the container, the sealing strip forms an independent airtight space between the heat preservation unit and the outer side wall of the container. By arranging the heat preservation unit, the deep-sea environment simulation device can have a temperature simulation function, and the temperature stability of the test environment can be ensured, so that the deep-sea environment can be completely simulated, and then a land test device is provided for temperature-sensitive deep-sea microbial culture, deep-sea pressure-resistant structure safety prediction and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of deep-sea environment simulation, in particular to a heat preservation structure for a deep-sea environment simulation device and a temperature control system thereof. BACKGROUND

[0002] With the development of ocean exploration, deep-sea manned submersible and other technologies, deep-sea microbial culture, deep-sea creep-resistant structure performance prediction and other tests require the deep-sea environment simulation device to have a deep-sea temperature simulation function. At present, most deep-sea environment simulation devices only have a pressure simulation function and do not have a temperature simulation function, so the above tests are difficult to carry out. SUMMARY

[0003] The present application provides a heat preservation structure for a deep-sea environment simulation device and a temperature control system thereof, which can make the deep-sea environment simulation device have a temperature simulation function and ensure the temperature stability of the test environment, thereby completely simulating the deep-sea environment and providing a land-based test device for temperature-sensitive deep-sea microbial culture, deep-sea pressure-resistant structure safety prediction and other tests.

[0004] The technical solutions adopted by the present application are as follows:

[0005] A heat preservation structure for a deep-sea environment simulation device includes a plurality of heat preservation units installed on the outer wall of a container. The plurality of heat preservation units completely surround the outer wall of the container to preserve the container.

[0006] The structure of a single heat preservation unit includes an outer shell with a heat insulation layer uniformly applied to the inner side of the outer shell. An even number of energy coil pipes are installed on the heat insulation layer in a serpentine arrangement. A heat-conducting fluid flows through the energy coil pipes. The inlet end of the energy coil pipes is connected to the output end of a refrigeration / heating module, and the outlet end of the energy coil pipes is connected to the input end of the refrigeration / heating module, so that the refrigeration / heating module adjusts the temperature of the heat-conducting fluid in the energy coil pipes. The flow directions of the heat-conducting fluids in adjacent two energy coil pipes are opposite. A sealing strip is installed on the edge of the inner side of the outer shell. When the heat preservation unit is installed in cooperation with the container, the sealing strip forms an independent airtight space between the heat preservation unit and the outer side wall of the container.

[0007] As a further improvement of the above technical solutions:

[0008] The heat preservation unit adopts a melon petal-shaped structure, a ring-shaped cylindrical structure, or a spherical crown-shaped structure.

[0009] The side of the shell is provided with a plurality of eccentric locking grooves, and the other side is provided with a plurality of eccentric tenons, and a single eccentric tenon corresponds to a single eccentric locking groove, when a plurality of heat preservation units are combined and installed, the eccentric tenon of one heat preservation unit is inserted into the eccentric locking groove of another heat preservation unit, thereby completing the connection and installation between a plurality of heat preservation units.

[0010] A temperature control system using the heat preservation structure for the deep sea environment simulation device, comprising a cold and heat unit, the output end of the cold and heat unit is connected with the inlet of the first heat exchanger through a first connecting pipeline, a first bypass pipeline is arranged on the first connecting pipeline, the outlet end of the first bypass pipeline is connected with the inlet of the second heat exchanger, the outlet of the second heat exchanger is connected with the input end of the cold and heat unit through a second connecting pipeline, a second bypass pipeline is arranged on the second connecting pipeline, and the inlet end of the second bypass pipeline is connected with the outlet of the first heat exchanger;

[0011] The outlet of the first heat exchanger is connected with the input end of the heat preservation unit through a third connecting pipeline, and the inlet of the first heat exchanger is connected with the output end of the heat preservation unit through a fourth connecting pipeline;

[0012] The output end of the second heat exchanger is connected with the transition water tank through a first connecting pipe group, the transition water tank is pre-filled with a test medium, the second heat exchanger cools or heats the test medium in the transition water tank through the first connecting pipe group, and the transition water tank is connected with the container through a second connecting pipe group.

[0013] As a further improvement of the above technical solution:

[0014] When the first heat exchanger needs to exchange heat with a plurality of heat preservation units, a corresponding number of third bypass pipelines are arranged on the third connecting pipeline, and the outlet end of a single third bypass pipeline is connected with the input end of the corresponding heat preservation unit, and a corresponding number of fourth bypass pipelines are arranged on the fourth connecting pipeline, and the inlet end of a single fourth bypass pipeline is connected with the output end of the corresponding heat preservation unit, thereby connecting a plurality of heat preservation units in parallel at the output end of the first heat exchanger;

[0015] An electromagnetic valve is installed on a single third bypass pipeline in cooperation, a plurality of temperature sensors are installed on the outer wall of the container through heat insulation glue, and a single temperature sensor detects the temperature of the airtight space between a single heat preservation unit and the container;

[0016] When the temperature detected by the temperature sensor is greater than the set temperature, the electromagnetic valve on the corresponding third bypass pipeline is opened, so that the heat-conducting fluid in the corresponding heat preservation unit is exchanged through the first heat exchanger.

[0017] The fourth connecting pipeline is provided with a first circulating pump in cooperation, the first connecting pipe group is provided with a second circulating pump in cooperation, and the second connecting pipe group is provided with a third circulating pump in cooperation.

[0018] The first connecting pipeline, the second connecting pipeline, the third connecting pipeline, the fourth connecting pipeline, the first connecting pipe group and the second connecting pipe group are provided with stop valves, Y-shaped filters, thermometers and pressure gauges in cooperation.

[0019] The present application has the following advantages:

[0020] The present application has the following advantages:

[0021] The present application has the following advantages:

[0022] (1) The pressure simulation temperature control system has two working modes of initial temperature preparation and long-term temperature maintenance, and the two working modes are independent and not performed at the same time. When the deep sea environment simulation device is under normal pressure, the temperature control system can establish the temperature in the cabin. When the cabin is under high pressure, i.e. high pressure simulation, the temperature control system adjusts and insulates the temperature of the cabin body by controlling the temperature of the insulation structure, so as to realize long-term stability of the test environment in the cabin.

[0023] (2) The insulation structure in the present application is manufactured in a modular manner, and can be combined into a gua petal type spherical structure, a ring type cylindrical structure and a spherical crown structure according to different insulation objects, so as to facilitate installation and realize temperature partition control. In actual use, since the container is usually a high structure, the test medium in the container will have a phenomenon that the temperature at the top is higher than that at the bottom for a long time. Through the modular insulation structure, the temperature of different parts of the container can be controlled in different zones, so that the temperature of the test medium in the container can be more uniform and stable.

[0024] (3) In the present application, the first heat exchanger and the second heat exchanger are provided to control the temperature of the test medium in the container and the temperature of the heat conduction fluid in the energy coil respectively. The two heat exchangers work independently, and their control mode is simple and flexible. After the high pressure environment in the container is established by the test medium, the second heat exchanger stops working, and the first heat exchanger is used to insulate the container, so as to ensure the stability of the temperature in the container and save energy.

[0025] (4) The heat preservation device and pressure simulation temperature control system in this invention are applicable to high-pressure equipment that requires temperature control. They are not only applicable to deep-sea high-pressure low-temperature environment simulation conditions, but also to temperature control and heat preservation conditions of chemical containers. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the temperature control system in this invention.

[0027] Figure 2 This is a schematic diagram of the thermal insulation unit in this invention. Figure One .

[0028] Figure 3 for Figure 2 A schematic diagram of the structure when the insulation units are combined into a ring-shaped cylindrical structure.

[0029] Figure 4 This is a schematic diagram of the thermal insulation unit in this invention. Figure Two .

[0030] Figure 5 for Figure 4 A schematic diagram of the structure when the insulation units are combined into a melon-petal-shaped spherical structure.

[0031] Figure 6 This is a schematic diagram of the thermal insulation structure used in the deep-sea environment simulation device of the present invention.

[0032] Figure 7 for Figure 6 A sectional view of section AA in the middle.

[0033] The components include: 1. Container; 2. Insulation unit; 3. Heating and cooling unit; 4. Transition water tank; 5. First heat exchanger; 6. Second heat exchanger; 7. First circulating pump; 8. Second circulating pump; 9. Third circulating pump; 10. First bypass pipe; 11. Second bypass pipe; 12. Third bypass pipe; 13. Fourth bypass pipe; 14. Test medium; 15. Airtight space.

[0034] 201. Outer shell; 202. Energy coil; 203. Insulation layer; 204. Sealing strip; 205. Eccentric locking groove; 206. Eccentric tenon. Detailed Implementation

[0035] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0036] Example 1:

[0037] like Figures 1-7As shown, the heat preservation structure for the deep-sea environment simulation device of the embodiment comprises a plurality of heat preservation units 2 installed on the outer wall of the container 1, and the plurality of heat preservation units 2 completely enclose the outer wall of the container 1, thereby heat preserving the container 1.

[0038] The structure of a single heat preservation unit 2 is as follows: comprising a shell 201, the inner side of the shell 201 is uniformly coated with a heat insulation layer 203, and an even number of energy coil pipes 202 arranged in a serpentine manner are installed on the heat insulation layer 203, a heat conducting fluid flows through the energy coil pipes 202, the inlet end of the energy coil pipes 202 is connected with the output end of the refrigeration / heating module, and the outlet end of the energy coil pipes 202 is connected with the input end of the refrigeration / heating module, so that the refrigeration / heating module adjusts the temperature of the heat conducting fluid in the energy coil pipes 202.

[0039] In order to ensure uniformity, the flow directions of the heat conducting fluids in the adjacent two energy coil pipes 202 are opposite.

[0040] The edge of the inner side of the shell 201 is provided with a sealing strip 204, when the heat preservation unit 2 is installed in cooperation with the container 1, the sealing strip 204 forms an independent airtight space 15 between the heat preservation unit 2 and the outer side wall of the container 1, thereby achieving the purpose of local and accurate temperature adjustment.

[0041] The plurality of heat preservation units 2 can completely wrap the outer wall of the container 1, and according to the shape of the container 1, the heat preservation unit 2 can adopt a melon-seed-shaped structure, a ring-shaped cylindrical structure, or a spherical crown structure.

[0042] The shell 201 can protect the heat insulation layer 203 and determine the shape of the heat preservation unit 2; the heat insulation layer 203 is made of a heat preservation material with a thermal conductivity coefficient not greater than 0.05 w / m·k; the heat preservation unit 2 is sealed and installed with the outer cabin wall of the container 1 through the sealing strip 204, so that the heat insulation layer 203 of the heat preservation unit 2 and the outer side wall of the container 1 form an independent airtight space 15; in each airtight space 15, the energy coil pipes 202 are arranged close to the heat insulation layer 203, and a heat conducting fluid flows through the energy coil pipes 202, so that the deep-sea environment simulation device has a heat preservation function, and each heat preservation unit 2 is independent, so that the deep-sea environment simulation device has a zoned temperature control function, and the temperature control precision of the deep-sea environment simulation device is improved.

[0043] The shell 201 is provided with a plurality of eccentric locking grooves 205 on one side, and a plurality of eccentric tenons 206 are provided on the other side, one eccentric tenon 206 corresponds to one eccentric locking groove 205, when the plurality of heat preservation units 2 are combined and installed, the eccentric tenon 206 of one heat preservation unit 2 is inserted into the eccentric locking groove 205 of another heat preservation unit 2, thereby completing the connection and installation between the plurality of heat preservation units 2.

[0044] In order to facilitate installation and realize temperature partition control, the heat preservation unit 2 is manufactured in a modular manner, and multiple heat preservation units 2 are quickly disassembled and assembled through the eccentric locking groove 205 and the eccentric tenon 206.

[0045] The heat preservation structure for the deep sea environment simulation device provided in the embodiment can be combined and installed in multiple structural forms, so that the container 1 can maintain stable temperature after temperature adjustment, thereby ensuring the temperature environment stability of the deep sea environment simulation device and enabling the deep sea environment simulation device to have a temperature control function.

[0046] Embodiment two

[0047] The heat preservation structure for the deep sea environment simulation device provided in the embodiment one is used to provide a temperature control system.

[0048] The temperature control system comprises a cold and hot unit 3, the output end of the cold and hot unit 3 is connected with the inlet of the input end of the first heat exchanger 5 through a first connecting pipeline, the first connecting pipeline is provided with a first branch pipeline 10, the outlet end of the first branch pipeline 10 is connected with the inlet of the input end of the second heat exchanger 6, the outlet of the input end of the second heat exchanger 6 is connected with the input end of the cold and hot unit 3 through a second connecting pipeline, the second connecting pipeline is provided with a second branch pipeline 11, the inlet end of the second branch pipeline 11 is connected with the outlet of the input end of the first heat exchanger 5; the outlet of the output end of the first heat exchanger 5 is connected with the input end of the heat preservation unit 2 through a third connecting pipeline, the inlet of the output end of the first heat exchanger 5 is connected with the output end of the heat preservation unit 2 through a fourth connecting pipeline; the output end of the second heat exchanger 6 is connected with the transition water tank 4 through a first connecting pipe group, the transition water tank 4 is pre-filled with a test medium 14, the second heat exchanger 6 performs refrigeration or heating on the test medium 14 in the transition water tank 4 through the first connecting pipe group, the transition water tank 4 is connected with the container 1 through a second connecting pipe group, and the test medium 14 in the transition water tank 4 and the test medium 14 in the container 1 are circulated through the second connecting pipe group.

[0049] When the first heat exchanger 5 needs to perform heat exchange on multiple heat preservation units 2, a corresponding number of third branch pipelines 12 are arranged on the third connecting pipeline, and the outlet end of a single third branch pipeline 12 is connected with the input end of the corresponding heat preservation unit 2, at the same time, a corresponding number of fourth branch pipelines 13 are arranged on the fourth connecting pipeline, and the inlet end of a single fourth branch pipeline 13 is connected with the output end of the corresponding heat preservation unit 2, so that multiple heat preservation units 2 are connected in parallel at the output end of the first heat exchanger 5.

[0050] The single third branch pipeline 12 is matched with an electromagnetic valve, and a plurality of temperature sensors are installed on the outer wall of the container 1 through heat insulation glue. A single temperature sensor detects the temperature of the airtight space 15 between a single heat preservation unit 2 and the container 1. The temperature detected by the temperature sensor is not affected by the internal temperature of the container 1 through the use of heat insulation glue, thereby ensuring the accuracy of the detection result;

[0051] When the temperature detected by the temperature sensor is greater than the set temperature, the electromagnetic valve on the corresponding third branch pipeline 12 is opened, so that the heat-conducting fluid in the corresponding heat preservation unit 2 is exchanged through the first heat exchanger 5;

[0052] The fourth connecting pipeline is matched with a first circulating pump 7, the first connecting pipe group is matched with a second circulating pump 8, and the second connecting pipe group is matched with a third circulating pump 9;

[0053] The first connecting pipeline, the second connecting pipeline, the third connecting pipeline, the fourth connecting pipeline, the first branch pipeline 10, the second branch pipeline 11, the third branch pipeline 12, the fourth branch pipeline 13, the first connecting pipe group and the second connecting pipe group are all matched with a stop valve, a Y-type filter, a thermometer and a pressure gauge.

[0054] The cold and hot unit 3 provides corresponding cold or heat according to the use requirement, and is transmitted to the first heat exchanger 5 and the second heat exchanger 6 through the first connecting pipeline and the second connecting pipeline respectively. The test medium 14 in the transition water tank 4 is cooled or heated through the second heat exchanger 6, the test medium 14 in the transition water tank 4 is injected into the container 1 through the second circulating pump 8, the heat preservation unit 2 is provided with cold or heat through the first heat exchanger 5, and the heat-conducting fluid in the energy coil 202 is cooled or heated, thereby realizing the control of the temperature of the heat preservation unit 2. The heat preservation unit 2 provides a stable temperature environment for the container 1, and realizes long-term heat preservation.

[0055] Among them, the size parameters and the setting number of the energy coil 202 are determined according to the heat exchange power of each section; the power of the first heat exchanger 5 and the second heat exchanger 6 is quite different, and the power of the first heat exchanger 5 is less than that of the second heat exchanger 6; the cold and hot unit 3 adopts frequency conversion control.

[0056] The temperature control system has two working modes of initial temperature preparation and long-term temperature maintenance, and the two working modes are not performed at the same time;

[0057] In the initial temperature preparation mode, the heat carrier is cooled or heated to the required temperature by the cold and hot unit 3, and then the heat carrier passes through the first connecting pipeline, the first bypass pipeline 10, the second heat exchanger 6, the second connecting pipeline in turn and returns to the cold and hot unit 3, at the same time, on the other side of the second heat exchanger 6, the test medium 14 in the transition water tank 4 circulates in the second heat exchanger 6 and the transition water tank 4 through the first connecting pipe group, and the second circulating pump 8 provides a circulating driving force for the test medium 14 in the first connecting pipe group, so as to exchange heat with the test medium 14 in the transition water tank 4, then the test medium 14 in the transition water tank 4 is injected into the container 1 through the second connecting pipe group, until the container 1 is filled with the test medium 14, then the test medium 14 in the transition water tank 4 circulates with the test medium 14 in the container 1 through the second connecting pipe group, until the temperature and uniformity of the test medium 14 in the container 1 meet the use requirements, and the third circulating pump 9 provides a circulating driving force for the test medium 14 in the second connecting pipe group;

[0058] In the long-term temperature maintaining mode, the heat carrier is cooled or heated to the required temperature by the cold and hot unit 3, and then the heat carrier passes through the first connecting pipeline, the first heat exchanger 5, the second bypass pipeline 11, the second connecting pipeline in turn and returns to the cold and hot unit 3, at the same time, on the other side of the first heat exchanger 5, the heat-conducting fluid in the energy coil 202 circulates in the first heat exchanger 5 and the energy coil 202 through the fourth connecting pipeline and the third connecting pipeline, so as to exchange heat with the heat-conducting fluid in the energy coil 202, so that the heat preservation unit 2 preserves the container 1 for a long time, so as to realize the long-term stability of the temperature inside the container 1, and the first circulating pump 7 provides a circulating driving force for the heat-conducting fluid in the fourth connecting pipeline and the third connecting pipeline.

[0059] In the long-term temperature maintaining mode, the high pressure or super-high pressure environment has been established in the container 1, at this time, the circulation exchange between the test medium 14 in the container 1 and the test medium 14 in the transition water tank 4 is stopped, and the container 1 is separated from the transition water tank 4, which is also the difficulty of long-term heat preservation of this type of equipment, that is, it is difficult to circulate the high-pressure medium, by increasing the heat preservation unit 2 outside the container 1, the heat preservation of the container 1 is realized, so that the container 1 still has temperature stability and pressure stability in the long-term working mode.

[0060] The opening and closing of the corresponding stop valve are controlled to realize the control of the flow direction of the fluid in the temperature control system; the thermometer and the pressure gauge in the temperature control system are convenient for monitoring the temperature and pressure of the fluid in the pipeline in the system; the first connecting pipeline, the second connecting pipeline, the third connecting pipeline, the fourth connecting pipeline, the first bypass pipeline 10, the second bypass pipeline 11, the third bypass pipeline 12, the fourth bypass pipeline 13, the first connecting pipe group and the second connecting pipe group adopt heat preservation pipes to prevent the heat loss of the fluid in the pipeline during transmission.

[0061] The embodiment provides a temperature control system based on a heat preservation structure of a deep sea environment simulation device.

[0062] The heat preservation unit 2 is arranged on the outer wall of the container 1, and airtight space 15 is formed between the heat preservation unit 2 and the container 1, so that the container 1 is preserved and temperature controlled; when the deep sea environment simulation device is under normal pressure, the cold and hot unit 3 of the temperature control system adjusts the test medium 14 in the transition water tank 4 to the test target temperature through the second heat exchanger 6 and fully circulates, so that a uniform target temperature field in the cabin can be established; when the deep sea environment simulation device is under high pressure, the transition water tank 4 is cut off from the medium in the cabin, and the cold and hot unit 3 inputs the heat absorbed by the cabin into the heat preservation unit 2 through the first heat exchanger 5, so that the cabin is cut off from the external heat source, thereby achieving the heat preservation purpose; in addition, the temperature inside the airtight space 15 is adjusted through the heat preservation unit 2, so that the local temperature of the medium in the cabin is fine adjusted, and the test environment in the cabin is established and stably maintained through the above functions. The active heat preservation unit 2 and the temperature control system can simulate the whole ocean environment.

[0063] The above description is an explanation of the application, not a limitation of the application, and the scope of the application is defined in the claims. Any modification within the protection scope of the application can be made.

Claims

1. An insulation structure for a deep-sea environment simulation device, characterized by: The application relates to a heat preservation unit (2) which is installed on the outer wall of a container (1) and completely surrounds the outer wall of the container (1) to preserve heat of the container (1). The heat preservation unit (2) comprises an outer shell (201) which is uniformly coated with a heat insulation layer (203) on the inner side, and an even number of energy coil pipes (202) which are arranged in a serpentine shape and are installed on the heat insulation layer (203); the energy coil pipes (202) are filled with heat conducting fluid, the inlet end of the energy coil pipes (202) is connected with the output end of a refrigeration / heating module, the outlet end of the energy coil pipes (202) is connected with the input end of the refrigeration / heating module, so that the refrigeration / heating module adjusts the temperature of the heat conducting fluid in the energy coil pipes (202); the flow directions of the heat conducting fluid in the adjacent two energy coil pipes (202) are opposite; a sealing strip (204) is installed on the edge of the inner side of the outer shell (201), and when the heat preservation unit (2) is installed in cooperation with the container (1), the sealing strip (204) forms an independent airtight space (15) between the heat preservation unit (2) and the outer wall of the container (1); the heat preservation unit (2) adopts a melon-seed-shaped structure, a ring-shaped cylindrical structure or a spherical crown structure; a plurality of eccentric locking grooves (205) are arranged on one side of the outer shell (201), and a plurality of eccentric tenons (206) are arranged on the other side; when a plurality of heat preservation units (2) are combined and installed, the eccentric tenon (206) of one heat preservation unit (2) is inserted into the eccentric locking groove (205) of another heat preservation unit (2), so that the connection and installation between the plurality of heat preservation units (2) are completed.

2. A temperature control system using the heat retaining structure for a deep-sea environment simulation apparatus according to claim 1, characterized by: The application also relates to a refrigeration / heating module which comprises a cold and hot unit (3), the output end of the cold and hot unit (3) is connected with the inlet of the input end of a first heat exchanger (5) through a first connecting pipeline, a first bypass pipeline (10) is arranged on the first connecting pipeline, the outlet end of the first bypass pipeline (10) is connected with the inlet of the input end of a second heat exchanger (6), the outlet of the input end of the second heat exchanger (6) is connected with the input end of the cold and hot unit (3) through a second connecting pipeline, a second bypass pipeline (11) is arranged on the second connecting pipeline, and the inlet end of the second bypass pipeline (11) is connected with the outlet of the input end of the first heat exchanger (5). The outlet of the output end of the first heat exchanger (5) is connected with the input end of the heat preservation unit (2) through a third connecting pipeline, and the inlet of the output end of the first heat exchanger (5) is connected with the input end of the heat preservation unit (2) through a fourth connecting pipeline. The output end of the second heat exchanger (6) is connected with a transition water tank (4) through a first connecting pipeline group, the transition water tank (4) is filled with test medium (14) in advance, the second heat exchanger (6) carries out refrigeration or heating on the test medium (14) in the transition water tank (4) through the first connecting pipeline group, and the transition water tank (4) is connected with the container (1) through a second connecting pipeline group.

3. The temperature control system of claim 2, wherein: When the first heat exchanger (5) needs to exchange heat with multiple heat preservation units (2), a corresponding number of third branch pipes (12) are arranged on the third connecting pipe, and the outlet end of a single third branch pipe (12) is connected with the input end of a corresponding heat preservation unit (2); meanwhile, a corresponding number of fourth branch pipes (13) are arranged on the fourth connecting pipe, and the inlet end of a single fourth branch pipe (13) is connected with the output end of a corresponding heat preservation unit (2), so that multiple heat preservation units (2) are connected in parallel at the output end of the first heat exchanger (5); An electromagnetic valve is arranged on a single third branch pipe (12), and a plurality of temperature sensors are arranged on the outer wall of the container (1) through heat insulation glue, and a single temperature sensor detects the temperature of the airtight space (15) between a single heat preservation unit (2) and the container (1); When the temperature detected by the temperature sensor is greater than the set temperature, the electromagnetic valve on the corresponding third branch pipe (12) is opened, so that the heat-conducting fluid in the corresponding heat preservation unit (2) is exchanged through the first heat exchanger (5).

4. The temperature control system of claim 3, wherein: A first circulating pump (7) is arranged on the fourth connecting pipe, a second circulating pump (8) is arranged on the first connecting pipe group, and a third circulating pump (9) is arranged on the second connecting pipe group.

5. The temperature control system of claim 3, wherein: A stop valve, a Y-type filter, a thermometer and a pressure gauge are arranged on the first connecting pipe, the second connecting pipe, the third connecting pipe, the fourth connecting pipe, the first branch pipe (10), the second branch pipe (11), the third branch pipe (12), the fourth branch pipe (13), the first connecting pipe group and the second connecting pipe group.

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