An emergency cooling storage tank

Abstract

This application relates to an emergency cooling cold storage tank, comprising an inner cold storage tank and an outer cold storage tank in a concentric sleeve structure; a dynamic integrated interface layer disposed between the inner and outer cold storage tanks, the dynamic integrated interface layer being switchable between a heat preservation mode and a heat transfer mode; and a control unit performing the mode switching operation. This application achieves dynamic mode switching through the dynamic integrated interface layer. When the cold storage tank is idle for emergency support, the heat preservation mode is activated to reduce its cold energy dissipation rate; when the cold storage tank fails, the heat transfer mode is activated, and the remaining cold energy of the failed cold storage tank can be efficiently transferred to the standby cold storage tank for auxiliary cold storage, improving the cold storage rate of the standby cold storage tank. When the temperature difference is insufficient, the dynamic integrated interface layer is switched back to the heat preservation mode, and the failed cold storage tank is switched to a cooling state for daily cooling of the area, achieving stable emergency cooling and effective utilization of cold energy.

Description

Technical Field

[0001] This application relates to the field of cold storage tanks, and in particular to an emergency cooling cold storage tank. Background Technology

[0002] Emergency cooling storage tanks are emergency cooling capacity protection devices designed for sudden failures in the cooling system (such as power outages or equipment failures). Their core function is to quickly release stored cold energy when regular cooling is interrupted, maintain a low-temperature environment in critical areas, and ensure personnel safety or stable equipment operation.

[0003] In emergency cooling scenarios, traditional single-tank cold storage designs face two major contradictions: on the one hand, long-term idleness leads to the loss of cold energy (monthly loss rate exceeding 50%), and frequent replenishment of cold energy results in energy waste; on the other hand, in the event of a sudden failure, there is a lack of backup cold source, making it difficult to meet the high reliability requirements of critical scenarios such as ICU, data center, and confidential control room.

[0004] In response to the aforementioned technical problems, there is an urgent need for an emergency cooling storage tank. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides an emergency cooling storage tank.

[0006] This application provides an emergency cooling storage tank, which adopts the following technical solution:

[0007] An emergency cooling storage tank includes:

[0008] The inner and outer cold storage tanks are concentrically sleeved.

[0009] A dynamic integrated interface layer is disposed between the inner and outer cold storage tanks, and the dynamic integrated interface layer can switch between insulation mode and heat transfer mode; and...

[0010] The control unit is configured as follows:

[0011] S1. In the initial state, the outer cold storage tank performs cold storage, the inner cold storage tank is in standby state, and the dynamic integrated interface layer is in heat preservation mode.

[0012] S2. When the storage temperature of the outer cold storage tank is detected to reach the preset failure threshold T1, a switching operation is performed:

[0013] A1. Start the inner cold storage tank to store cold;

[0014] A2. Switch the dynamic integrated interface layer to heat transfer mode so that the cold energy of the outer cold storage tank can be transferred to the inner cold storage tank through the dynamic integrated interface layer to assist the inner cold storage tank in storing cold.

[0015] S3. When the temperature difference between the inner and outer cold storage tanks is less than the preset cold transfer temperature difference threshold ΔT, the dynamic integrated interface layer will be switched back to the insulation mode, and the outer cold storage tank will be switched to the cooling state to provide daily cooling for the area.

[0016] Preferred options also include:

[0017] The buffer cold storage tank is used to respond to emergency cooling requests when the switching operation is performed in step S2, and to provide emergency cooling to the requesting equipment until the cold storage tank for cold storage reaches the cooling temperature T4 or the requesting equipment stops the cooling request.

[0018] When the temperature of the current cold storage tank is less than the preset buffer threshold T2, the control unit starts the buffer cold storage pool to store cold; the temperature of the buffer threshold T2 is lower than the failure threshold T1.

[0019] Preferably, the control unit is established before step S2:

[0020] When the temperature of the outer cold storage tank is detected to be lower than the preset warning threshold T3, the inner cold storage tank is activated in advance to store cold, but the dynamic interface layer is kept in the heat preservation mode; and the temperature of the warning threshold T3 is lower than the failure threshold T1.

[0021] Preferably, the dynamic integrated interface layer is a sealed cavity structure, the interior of which can be selectively filled with:

[0022] Insulating medium, to achieve the aforementioned insulation mode; or

[0023] A heat transfer medium is used to achieve the heat transfer mode.

[0024] Furthermore, the thermal conductivity of the insulation medium is ≤0.05W / (m·K), and the thermal conductivity of the heat transfer medium is ≥0.5W / (m·K).

[0025] Preferably, the dynamic integrated interface layer includes a vacuum-sealed cavity and a retractable heat-conducting mechanism;

[0026] In the heat preservation mode:

[0027] The vacuum-sealed cavity maintains a vacuum level of ≤10. -2 Pa;

[0028] Furthermore, when the retractable heat-conducting mechanism is in a retracted state, its heat-conducting columns do not contact the outer wall of the inner cold storage tank or the inner wall of the outer cold storage tank, and the minimum gap is ≥1mm;

[0029] In heat transfer mode:

[0030] The heat-conducting column of the retractable heat-conducting mechanism penetrates the vacuum-sealed cavity wall and is directly pressed against the outer wall of the inner cold storage tank and the inner wall of the outer cold storage tank.

[0031] Preferably, the penetration point between the heat-conducting column of the retractable heat-conducting mechanism and the wall of the vacuum-sealed cavity is provided with a multi-stage magnetohydrodynamic sealing assembly.

[0032] Preferably, the end of the heat-conducting column of the retractable heat-conducting mechanism has a laser micro-textured surface, which adopts a micro-pyramid texture with a texture depth of 20-50μm; the laser micro-textured surface is filled with gallium indium tin liquid metal.

[0033] Preferably, the dynamic integrated interface layer integrates a magnetofluid thermal switch:

[0034] When the magnetic field is removed during the heat preservation mode, the magnetic nanoparticles are dispersed in the base liquid with a thermal conductivity ≤0.1W / (m·K).

[0035] When a magnetic field is applied in the heat transfer mode, magnetic nanoparticles form directional heat-conducting chains with a thermal conductivity ≥10W / (m·K).

[0036] Preferably, the failure threshold T1 is set by the administrator, specifically including the following steps:

[0037] P1. Obtain parameter information of core equipment within the area, and filter to obtain the maximum allowable emergency cooling temperature of the core equipment; the parameter information includes the maximum allowable emergency cooling temperature and the minimum allowable emergency cooling temperature of the core equipment;

[0038] P2. Select the lowest temperature value among the maximum allowable emergency cooling temperatures of each core device as the reference temperature T5.

[0039] P3. Obtain the average cold storage capacity of the inner and outer cold storage tanks, and compare it with the preset cold storage capacity and response margin comparison table to obtain the system response margin T6.

[0040] P4. Calculate the recommended value T7 of the failure threshold T1 using the preset recommended value calculation formula. The specific recommended value calculation formula is: T7 = T5 - T6.

[0041] P5. Send the recommended value T7 to the administrator so that the administrator can set the failure threshold T1.

[0042] Preferably, the cold storage medium of the buffer cold storage tank is a phase change material, and the phase change temperature of the phase change material is lower than the failure threshold T1 of the outer cold storage tank and higher than the minimum allowable emergency cooling temperature of the core equipment.

[0043] In summary, this application includes at least one of the following beneficial technical effects:

[0044] 1. By setting up an inner and outer cold storage tank with a concentric sleeve structure, a dual guarantee is formed. One tank stores cold for emergency cooling, and the other is a backup, which enhances emergency reliability. When the cold storage tank that is storing cold for emergency cooling is idle and the cold dissipation reaches the failure threshold, the backup cold storage tank can be started immediately to store cold, avoiding system paralysis due to the failure of a single tank, and significantly improving the redundancy and emergency response capability of the system.

[0045] 2. By setting up a dynamic integrated interface layer, the execution mode can be dynamically switched. When the cold storage tank is idle for emergency protection, the insulation mode is activated to reduce its cold energy dissipation rate. When the cold storage tank fails, the heat transfer mode is activated, and the remaining cold energy of the failed cold storage tank can be efficiently transferred to the standby cold storage tank for auxiliary cold storage, thereby improving the cold storage rate of the standby cold storage tank. When the temperature difference is less than the preset cold transfer temperature difference threshold ΔT, the dynamic integrated interface layer is switched back to the insulation mode, and the outer cold storage tank is switched to the cooling state to provide daily cooling for the area. This forms a stable utilization of the failed cold energy in a stepped manner, avoiding the phenomenon of cold energy waste when the cold storage fails, significantly improving the overall cold energy utilization rate and reducing energy consumption.

[0046] 3. The inclusion of a buffer cold storage tank further enhances the reliability and continuity of emergency cooling. By setting the buffer threshold T2 below the failure threshold T1, the control unit can activate the buffer cold storage tank before the current cold storage tank approaches failure, ensuring that the buffer tank always has sufficient cooling capacity. When a switching operation triggers a cooling response vacuum, the buffer cold storage tank can immediately respond to the emergency request, continuously supplying cooling to critical scenarios such as ICUs and data centers until the new cold storage tank reaches the cooling temperature T4, avoiding the cooling quality degradation caused by relying on a failed cold storage tank. Simultaneously, the buffer tank's advance cold storage and precise release not only ensures the stability of cooling capacity in emergency scenarios but also reduces unnecessary replenishment operations through the timing of cooling capacity adjustments, further reducing energy waste and significantly improving the system's response speed and reliability in response to sudden demands. Attached Figure Description

[0047] Figure 1 This is a system block diagram of an emergency cooling storage tank according to Embodiment 1 of this application;

[0048] Figure 2 This is a schematic cross-sectional view of an emergency cooling storage tank according to Embodiment 1 of this application;

[0049] Figure 3 This is a flowchart of the method for setting the failure threshold T1 in Embodiment 1 of this application;

[0050] Figure 4 This is a schematic cross-sectional view of an emergency cooling storage tank according to Embodiment 2 of this application;

[0051] Figure 5 yes Figure 4 A magnified view of part A in the middle;

[0052] Figure 6 yes Figure 5 A cross-sectional view of the retractable heat-conducting mechanism in its retracted state.

[0053] Figure 7 This is a schematic cross-sectional view of an emergency cooling storage tank according to Embodiment 3 of this application.

[0054] Explanation of reference numerals in the attached drawings: 1. Inner cold storage tank; 2. Outer cold storage tank; 3. Dynamic integrated interface layer; 31. Sealed cavity structure; 32. Vacuum sealed cavity; 33. Scalable heat conduction mechanism; 34. Multi-stage magnetic fluid sealing assembly; 35. Magnetic fluid thermal switch; 4. Control unit; 5. Buffer cold storage pool. Detailed Implementation

[0055] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0056] Example 1: This application discloses an emergency cooling storage tank. (Refer to...) Figure 1 and Figure 2 An emergency cooling storage tank, comprising:

[0057] The inner cold storage tank 1 and the outer cold storage tank 2 are in a concentric sleeve structure;

[0058] A dynamic integrated interface layer 3 is disposed between the inner cold storage tank 1 and the outer cold storage tank 2. This dynamic integrated interface layer 3 can switch between insulation mode and heat transfer mode; and...

[0059] Control unit 4 is configured as follows:

[0060] S1. In the initial state, the outer cold storage tank 2 performs cold storage, the inner cold storage tank 1 is in standby state, and the dynamic integrated interface layer 3 is in heat preservation mode.

[0061] S2. When the storage temperature of the outer cold storage tank 2 is detected to reach the preset failure threshold T1, a switching operation is performed:

[0062] A1. Start the inner layer cold storage tank 1 for cold storage;

[0063] A2. Switch the dynamic integrated interface layer 3 to the heat transfer mode so that the cold energy of the outer cold storage tank 2 can be transferred to the inner cold storage tank 1 through the dynamic integrated interface layer 3 to assist the inner cold storage tank 1 in storing cold.

[0064] S3. When the temperature difference between the inner cold storage tank 1 and the outer cold storage tank 2 is less than the preset cold transfer temperature difference threshold ΔT, the dynamic integrated interface layer 3 is switched back to insulation mode, and the outer cold storage tank 2 is switched to cooling mode to provide daily cooling for the area. Similarly, the same principle applies to the inner cold storage tank 1 performing cold storage while the outer cold storage tank 2 is in standby mode, and will not be elaborated further. The cold transfer temperature difference threshold ΔT is set by the administrator; in this embodiment, it is set to 2°C. The concentric sleeve structure of the inner cold storage tank 1 and the outer cold storage tank 2 creates a dual protection system: one provides emergency cooling while the other serves as a backup, enhancing emergency reliability. If the emergency cold storage tank becomes idle and its cooling capacity reaches the failure threshold, the backup tank can immediately activate, preventing system paralysis due to single-tank failure and significantly improving system redundancy and emergency response capabilities. Simultaneously, the dynamic integrated interface layer 3 enables dynamic switching of execution modes. When the emergency cold storage tank is idle, an insulation mode is activated to reduce cooling capacity loss. In the event of a cold storage tank failure, a heat transfer mode is activated, allowing the remaining cold energy in the failed tank to be efficiently transferred to the backup cold storage tank for auxiliary cold storage, thereby increasing the cold storage rate of the backup tank. When the temperature difference is less than the preset cold transfer temperature difference threshold ΔT, the dynamic integrated interface layer 3 is switched back to insulation mode, and the outer cold storage tank 2 is switched to cooling mode to provide daily cooling for the area. This forms a stable, stepped utilization of the failed cold energy, avoiding the phenomenon of cold energy waste due to cold storage failure. This significantly improves the overall cold energy utilization rate, reduces energy consumption, and achieves stable emergency cooling and effective utilization of cold energy.

[0065] Furthermore, the inventors discovered during practical application that when the inner cold storage tank 1 or the outer cold storage tank 2 fails, a certain period of cooling response vacuum can easily occur during the switching operation, making it difficult to respond effectively to emergency cooling requests. Specifically, when the cold storage tank is idle and its cold energy dissipates to the failure threshold, another backup cold storage tank is activated during the switching operation. The period from this point until the current cold storage tank reaches the cooling temperature is the cooling response vacuum. If an emergency cooling demand occurs during this period, although the failed cold storage tank can be used for cooling, the cooling quality is low. Therefore, the inventors further improved the system, referring to... Figure 1 An emergency cooling storage tank also includes:

[0066] The buffer cold storage tank 5 is used to respond to emergency cooling requests when the switching operation is performed in step S2, and to provide emergency cooling to the requesting equipment until the cold storage tank for cold storage reaches the cooling temperature T4 or the requesting equipment stops the cooling request.

[0067] When the current cold storage tank's temperature is lower than a preset buffer threshold T2, the control unit 4 activates the buffer cold storage pool 5 to store cold. The buffer threshold T2 is lower than the failure threshold T1. When the cold storage tank reaches the failure threshold due to the dissipation of idle cold energy, the switching operation to activate the backup tank typically takes 10-30 minutes. In this case, if an emergency cooling demand arises, although the failed cold storage tank can be used, the cooling quality is low. The buffer cold storage pool 5 further enhances the reliability and continuity of emergency cooling. By setting the buffer threshold T2 below the failure threshold T1, the control unit 4 can activate the buffer cold storage pool 5 before the current cold storage tank approaches failure, ensuring the buffer pool always has sufficient cold energy. When the switching operation triggers a cooling response vacuum period, the buffer cold storage pool 5 can immediately respond to the emergency request, continuously supplying cooling to critical scenarios such as ICUs and data centers until the new cold storage tank reaches the cooling temperature T4, avoiding the cooling quality degradation caused by relying on the failed cold storage tank. Meanwhile, the pre-storage and precise release of cold in the buffer pool not only ensures the stability of cooling capacity in emergency scenarios, but also reduces unnecessary supplemental cooling operations through the timing of cooling capacity, further reducing energy waste and qualitatively improving the system's response speed and reliability in response to sudden demands.

[0068] Furthermore, before step S2, control unit 4:

[0069] When the temperature of the outer cold storage tank 2 is detected to be lower than the preset warning threshold T3, the inner cold storage tank 1 is activated in advance to store cold, while maintaining the dynamic interface layer in insulation mode; and the warning threshold T3 temperature is lower than the failure threshold T1. By adding this step, the response efficiency and scientific nature of the emergency cooling storage tank are further improved. When the temperature of the outer cold storage tank 2 drops to the warning threshold T3 (lower than the failure threshold T1), the control unit 4 activates the inner cold storage tank 1 in advance to store cold while maintaining the dynamic interface layer insulation mode, achieving the dual advantages of advance storage and precise isolation. On the one hand, the inner cold storage tank 1 begins to store cold during the warning stage, which significantly shortens the time for the inner layer to reach the effective cooling temperature compared to the mode of activating only after the outer layer fails. It may even have completed cold storage during the switching operation, compressing the duration of the cooling response vacuum period from the source and significantly improving the emergency response speed. On the other hand, the dynamic interface layer in the insulation mode avoids interference between the inner layer and the outer layer's cold energy during the inner layer's cold storage process, ensuring that the inner layer's cold storage is efficient and independent. It not only utilizes the time during the early warning phase to store cold energy in advance, but also ensures the cold storage efficiency of the inner and outer layers through isolation. This allows the system to switch to a coordinated state of inner layer cold storage and outer layer cooling more quickly and stably when facing the failure of the outer layer, further enhancing the continuity and reliability of cooling in critical scenarios.

[0070] It should be noted that the failure threshold T1, buffer threshold T2, and warning threshold T3 are all preset by the administrators.

[0071] Furthermore, refer to Figure 3 The aforementioned failure threshold T1 is set by the administrator, and specifically includes the following steps:

[0072] P1. Obtain parameter information of core equipment within the area, and filter to obtain the maximum allowable emergency cooling temperature of the core equipment; the parameter information includes the maximum allowable emergency cooling temperature and the minimum allowable emergency cooling temperature of the core equipment;

[0073] P2. Select the lowest temperature value among the maximum allowable emergency cooling temperatures of each core device as the reference temperature T5.

[0074] P3. Obtain the average cold storage capacity of the inner cold storage tank 1 and the outer cold storage tank 2, and obtain the system response margin T6 by referring to the preset cold storage capacity and response margin comparison table; the preset cold storage capacity and response margin comparison table is set by the management personnel, and the larger the cold storage capacity, the smaller the corresponding system response margin T6.

[0075] P4. Calculate the recommended value T7 of the failure threshold T1 using the preset recommended value calculation formula. The specific recommended value calculation formula is: T7 = T5 - T6.

[0076] P5. Send the recommended value T7 to the management personnel for setting the failure threshold T1. Through the above steps, firstly, the core equipment requirements are accurately matched to improve cooling safety. The lowest value among the maximum allowable emergency cooling temperatures of the core equipment in the area is used as the benchmark temperature T5, ensuring that the failure threshold T1 is always set below the tolerance limit of the most sensitive equipment. Secondly, the scientific validity of the threshold is optimized by combining system response capabilities and introducing a system response margin T6 corresponding to the average cold storage capacity. This ensures that the failure threshold T1 setting not only considers equipment requirements but also fully takes into account the system's own cold transfer efficiency and cold storage speed, avoiding problems such as insufficient system response due to an excessively high failure threshold or wasted cold storage capacity due to an excessively low threshold. This makes the failure threshold more closely match the actual operating state of the system, improving the overall collaborative efficiency of the cooling system. Finally, management personnel are given flexible adjustment space to enhance scenario adaptability. The recommended value provides a scientific reference for management personnel while retaining the flexibility of manual setting. Fine-tuning can be performed according to temporary adjustments of equipment in the area, environmental changes, and other special circumstances, allowing the failure threshold T1 to better adapt to the dynamic needs of different scenarios, further enhancing the practicality and adaptability of the emergency cooling system.

[0077] Furthermore, the cold storage medium of the buffer cold storage tank 5 is a phase change material. The phase change temperature of the phase change material is lower than the failure threshold T1 of the outer cold storage tank 2 and higher than the minimum allowable emergency cooling temperature of the core equipment. When the outer cold storage tank 2 reaches the failure threshold and enters the switching phase, the buffer cold storage tank 5 can immediately release cold energy at a stable temperature, avoiding the impact of cold energy fluctuations on the cooling quality.

[0078] Reference Figure 1 and Figure 2 The dynamic integrated interface layer 3 is a sealed cavity structure 31, which can be selectively filled with:

[0079] Insulating medium, to achieve the aforementioned insulation mode; or

[0080] A heat transfer medium is used to achieve the heat transfer mode.

[0081] Furthermore, the thermal conductivity of the insulation medium is ≤0.05 W / (m·K), and the thermal conductivity of the heat transfer medium is ≥0.5 W / (m·K). The insulation medium can be nitrogen, nano-aerogel particles, etc. The heat transfer medium can be liquid metal (Ga-In-Sn alloy), ethylene glycol aqueous solution, and heat transfer oil, etc. The dynamic integrated interface layer 3 adopts a sealed cavity structure 31, which achieves mode switching by filling with media with different thermal conductivity. The mode switching response is fast, the compatibility is strong, and the cold and heat isolation is stable.

[0082] Example 2: The difference between this example and Example 1 is that, referring to... Figures 4-6 The dynamic integrated interface layer 3 includes a vacuum-sealed cavity 32 and a retractable heat-conducting mechanism 33. The retractable heat-conducting mechanism 33 includes an array of retractable heat-conducting columns, which are made of high thermal conductivity composite materials such as copper-diamond or graphene-reinforced aluminum.

[0083] In the heat preservation mode:

[0084] The vacuum-sealed cavity 32 maintains a vacuum level of ≤10. -2 Pa;

[0085] Furthermore, when the retractable heat-conducting mechanism 33 is in a retracted state, its heat-conducting columns do not contact the outer wall of the inner cold storage tank 1 or the inner wall of the outer cold storage tank 2, and the minimum gap is ≥1mm.

[0086] In heat transfer mode:

[0087] The heat-conducting column of the retractable heat-conducting mechanism 33 penetrates the wall of the vacuum-sealed cavity 32 and is directly pressed against the outer wall of the inner cold storage tank 1 and the inner wall of the outer cold storage tank 2. Through the combination of the vacuum cavity and the retractable heat-conducting column, a precise switch between physical isolation and direct conduction is achieved, maximizing the insulation performance and far exceeding that of the medium-type insulation. At the same time, the heat transfer efficiency is greatly improved. The heat-conducting column, made of high thermal conductivity composite material, is directly pressed against the inner and outer tank walls, significantly reducing contact thermal resistance and greatly improving heat transfer efficiency.

[0088] The retractable heat-conducting mechanism 33 features a multi-stage magnetohydrodynamic sealing assembly 34 at the penetration point between the heat-conducting column and the wall of the vacuum-sealed cavity 32. This multi-stage magnetohydrodynamic sealing assembly 34 ensures the vacuum integrity at the penetration point, preventing a decrease in insulation performance due to vacuum failure, and is suitable for long-term operation under high pressure or complex environments.

[0089] Furthermore, the ends of the heat-conducting columns of the retractable heat-conducting mechanism 33 have laser-textured surfaces. These surfaces employ a micro-pyramid texture with a texture depth of 20-50 μm and are filled with gallium indium tin liquid metal. By creating these laser-textured surfaces, the contact area between the ends of the heat-conducting columns and the inner and outer tank walls is increased, and gaps are filled, significantly reducing contact thermal resistance and further improving heat transfer efficiency.

[0090] Example 3: The difference between this example and Example 1 is that, referring to... Figure 7 The dynamic integrated interface layer 3 integrates a magnetofluid thermal switch 35.

[0091] When the magnetic field is removed during the heat preservation mode, the magnetic nanoparticles are dispersed in the base liquid with a thermal conductivity ≤0.1W / (m·K).

[0092] In heat transfer mode, a magnetic field is applied, causing magnetic nanoparticles to form directional heat-conducting chains with a thermal conductivity ≥10 W / (m·K). The matrix of the magnetic fluid thermal switch 35 is made of silicone oil with a thermal conductivity λ=0.1 W / (m·K). The magnetic nanoparticles are selected from iron oxide nanochains, which have a thermal conductivity λ=80 W / (m·K) when forming directional heat-conducting chains under the action of a magnetic field. Through the setting of the magnetic fluid thermal switch 35, a sudden change in thermal conductivity is achieved based on the directional arrangement of magnetically controlled nanoparticles, resulting in a large contrast in thermal conductivity. The application and removal of the magnetic field can be completed in milliseconds without mechanical action or medium filling and discharging. This is suitable for high-frequency emergency scenarios with stringent requirements for switching speed. Furthermore, the combination of silicone oil base fluid and magnetic particles has good chemical stability and is suitable for long-term cyclic use. Using the magnetic fluid thermal switch 35 to achieve mode switching has the advantages of excellent heat preservation or heat transfer performance, fast switching response speed, and long service life.

[0093] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. An emergency cooling storage tank, characterized in that, include: The inner cold storage tank (1) and the outer cold storage tank (2) are in a concentric sleeve structure; A dynamic integrated interface layer (3) is disposed between the inner cold storage tank (1) and the outer cold storage tank (2), the dynamic integrated interface layer (3) being switchable between heat preservation mode and heat transfer mode; and, Control unit (4) is configured as follows: S1. In the initial state, the outer cold storage tank (2) performs cold storage, the inner cold storage tank (1) is in standby state, and the dynamic integrated interface layer (3) is in heat preservation mode. S2. When the storage temperature of the outer cold storage tank (2) is detected to reach the preset failure threshold T1, a switching operation is performed: A1. Start the inner layer cold storage tank (1) to store cold; A2. Switch the dynamic integrated interface layer (3) to the heat transfer mode so that the cold energy of the outer cold storage tank (2) can be transferred to the inner cold storage tank (1) through the dynamic integrated interface layer (3) to assist the inner cold storage tank (1) in storing cold. S3. When the temperature difference between the inner cold storage tank (1) and the outer cold storage tank (2) is less than the preset cold transfer temperature difference threshold ΔT, the dynamic integrated interface layer (3) is switched back to the heat preservation mode, and the outer cold storage tank (2) is switched to the cooling state to provide daily cooling for the area.

2. The emergency cooling storage tank according to claim 1, characterized in that, Also includes: The buffer cold storage tank (5) is used to respond to the emergency cooling request when the switching operation is performed in step S2, and to provide emergency cooling to the requesting equipment until the cold storage tank reaches the cooling temperature T4 or the requesting equipment stops the cooling request. When the storage temperature of the current storage tank is less than the preset buffer threshold T2, the control unit (4) starts the buffer storage tank (5) to store cold; the temperature of the buffer threshold T2 is lower than the failure threshold T1.

3. The emergency cooling storage tank according to claim 1, characterized in that, Before step S2: When the temperature of the outer cold storage tank (2) is detected to be less than the preset warning threshold T3, the inner cold storage tank (1) is started in advance to store cold, but the dynamic interface layer is kept in the heat preservation mode; and the temperature of the warning threshold T3 is lower than the failure threshold T1.

4. The emergency cooling storage tank according to claim 1, characterized in that, The dynamic integrated interface layer (3) includes a sealed cavity structure (31), the interior of which can be selectively filled with: The insulation medium achieves the aforementioned insulation mode; or A heat transfer medium is used to achieve the heat transfer mode. Furthermore, the thermal conductivity of the insulation medium is ≤0.05W / (m·K), and the thermal conductivity of the heat transfer medium is ≥0.5W / (m·K).

5. An emergency cooling storage tank according to claim 1, characterized in that, The dynamic integrated interface layer (3) includes a vacuum-sealed cavity (32) and a retractable heat-conducting mechanism (33); In the heat preservation mode: The vacuum-sealed cavity (32) maintains a vacuum level of ≤10. -2 Pa; Furthermore, the retractable heat-conducting mechanism (33) is in a retracted state, and its heat-conducting columns do not contact the outer wall of the inner cold storage tank (1) or the inner wall of the outer cold storage tank (2), and the minimum gap is ≥1mm; In heat transfer mode: The heat-conducting column of the retractable heat-conducting mechanism (33) penetrates the wall of the vacuum-sealed cavity (32) and is directly pressed against the outer wall of the inner cold storage tank (1) and the inner wall of the outer cold storage tank (2).

6. An emergency cooling storage tank according to claim 5, characterized in that: The heat-conducting column of the retractable heat-conducting mechanism (33) is provided with a multi-stage magnetic fluid sealing assembly (34) at the penetration point between the heat-conducting column and the wall of the vacuum-sealed cavity (32).

7. An emergency cooling storage tank according to claim 5, characterized in that: The end of the heat-conducting column of the retractable heat-conducting mechanism (33) has a laser micro-textured surface. The laser micro-textured surface adopts a micro pyramid texture with a texture depth of 20-50μm. The laser micro-textured surface is filled with gallium indium tin liquid metal.

8. An emergency cooling storage tank according to claim 1, characterized in that, The dynamic integrated interface layer (3) integrates a magnetofluid thermal switch (35): When the magnetic field is removed during the heat preservation mode, the magnetic nanoparticles are dispersed in the base liquid with a thermal conductivity ≤0.1W / (m·K). When a magnetic field is applied in the heat transfer mode, magnetic nanoparticles form directional heat-conducting chains with a thermal conductivity ≥10W / (m·K).

9. An emergency cooling storage tank according to claim 2, characterized in that: The failure threshold T1 is set by the administrator, specifically including the following steps: P1. Obtain parameter information of core equipment within the area, and filter to obtain the maximum allowable emergency cooling temperature of the core equipment; the parameter information includes the maximum allowable emergency cooling temperature and the minimum allowable emergency cooling temperature of the core equipment; P2. Select the lowest temperature value among the maximum allowable emergency cooling temperatures of each core device as the reference temperature T5. P3. Obtain the average value of the cold storage capacity of the inner cold storage tank (1) and the outer cold storage tank (2), and obtain the system response margin T6 by referring to the preset cold storage capacity and response margin comparison table. P4. Calculate the recommended value T7 of the failure threshold T1 using the preset recommended value calculation formula. The specific recommended value calculation formula is: T7 = T5 - T6. P5. Send the recommended value T7 to the administrator so that the administrator can set the failure threshold T1.

10. An emergency cooling storage tank according to claim 9, characterized in that: The cold storage medium of the buffer cold storage tank (5) is a phase change material. The phase change temperature of the phase change material is lower than the failure threshold T1 of the outer cold storage tank (2) and higher than the minimum allowable emergency cooling temperature of the core equipment.

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