Liquid cooling heat dissipation device of service cabinet

Abstract

The utility model belongs to the technical field of heat dissipation devices, and particularly relates to a liquid cooling heat dissipation device for a service cabinet, which replaces a traditional air cooling heat dissipation mode with a liquid cooling technology and comprises heat dissipation holes, a heat dissipation box, a heat conduction coil pipe, a first liquid storage strip and a second liquid storage strip which are arranged at the top of the cabinet, and cooling liquid circularly flows in the heat conduction coil pipe. Heat in the cabinet is taken away through efficient heat conductivity, automatic switching operation of liquid storage strips is achieved through a temperature control three-way electromagnetic valve, when the temperature of cooling liquid rises, cooling fins make contact with air to complete cooling of the cooling liquid, and a cooling box of the device is attached to the outer wall of the cabinet in a sealed mode through a sealing frame. External dust and water vapor are effectively prevented from entering the cabinet, the clamping mechanism is reasonable in design, it is ensured that the liquid storage strip is stably fixed in the operation process, and meanwhile the maintenance convenience of the device is improved by adopting a threaded sealing connection mode.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat dissipation devices, specifically relating to a liquid cooling heat dissipation device for a service cabinet. Background Technology

[0002] Server racks are commonly used in data centers, server rooms, and other equipment installation locations, primarily to house and protect various electronic components and system modules. However, during rack operation, the continuous operation of internal components generates a significant amount of heat. If this heat cannot be dissipated in a timely manner, it can lead to performance degradation or even damage to the components, thereby affecting the overall stability and security of the rack's operation. Therefore, heat dissipation in server racks has always been a key research focus in this field.

[0003] Currently, the most common method for cooling server racks is air cooling, which uses fans to expel heat. However, air cooling has the following problems:

[0004] 1. Limited heat dissipation effect: Air cooling is difficult to handle high-density or high-heat equipment, especially when the space inside the cabinet is small and airflow is obstructed, the heat dissipation efficiency is further reduced;

[0005] 2. Poor environmental adaptability: Air cooling requires the cabinet to exchange air with the outside air, so the cabinet cannot be completely sealed. This makes it easy for moisture and dust from the outside to enter the cabinet, causing pollution or corrosion to the components.

[0006] 3. Noise issue: Air cooling usually requires high-speed fans, which generates a lot of noise and is not conducive to use in quiet environments.

[0007] Liquid cooling, as an alternative technology, has gradually become one of the research directions for solving the heat dissipation problem of high-performance server racks due to its efficient heat conduction capabilities. However, traditional liquid cooling devices usually suffer from problems such as inaccurate coolant temperature control, high operating costs, and poor coolant circulation, making it difficult to meet the needs of different scenarios. Utility Model Content

[0008] In view of the problems existing in the prior art, the purpose of this utility model is to provide a liquid cooling heat dissipation device for server racks, which can solve the problem of heat dissipation inside the rack while maintaining the airtightness of the rack.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A liquid cooling heat dissipation device for a server rack includes a rack, with heat dissipation holes evenly distributed on the top wall of the rack, and a liquid cooling heat dissipation mechanism installed on the top surface of the rack around the heat dissipation holes.

[0011] The liquid cooling and heat dissipation mechanism includes a heat dissipation box, a heat conduction coil located inside the heat dissipation box, and a first liquid storage strip and a second liquid storage strip fixed on both sides of the heat dissipation box. Both ends of the first liquid storage strip and the second liquid storage strip are fixed on the cabinet through a clamping mechanism.

[0012] Both ends of the heat conduction coil are connected to a liquid inlet main pipe and a liquid outlet main pipe. A circulation pump is arranged on the liquid inlet main pipe. Both end walls of the first liquid storage strip facing the second liquid storage strip are respectively connected to a first liquid inlet branch pipe and a first liquid outlet branch pipe. Both end walls of the second liquid storage strip facing the first liquid storage strip are respectively connected to a second liquid inlet branch pipe and a second liquid outlet branch pipe.

[0013] The first liquid inlet branch pipe and the second liquid inlet branch pipe are connected to the liquid inlet main pipe through a first three-way solenoid valve. The first liquid outlet branch pipe and the second liquid outlet branch pipe are connected to the liquid outlet main pipe through a second three-way solenoid valve.

[0014] Further, the bottom of the heat dissipation box is open. A sealing frame integrally formed with the heat dissipation box is sleeved on the outer wall of the heat dissipation box, and the bottom surface of the sealing frame is hermetically fitted with the outer wall of the cabinet.

[0015] Further, the first liquid storage strip and the second liquid storage strip are of a hollow structure. Heat dissipation fins welded to the bottom end walls of the first liquid storage strip and the second liquid storage strip respectively penetrate through the bottom end walls. The heat dissipation fins are aluminum sheets.

[0016] Further, a liquid injection hole is opened on one side wall of the first liquid storage strip and the second liquid storage strip, and a sealing plug is screwed into the liquid injection hole.

[0017] Further, the first three-way solenoid valve is in threaded seal connection with the liquid inlet main pipe, the first liquid inlet branch pipe and the second liquid inlet branch pipe. The first three-way solenoid valve is used to switch the connection between the first liquid inlet branch pipe, the second liquid inlet branch pipe and the liquid inlet main pipe. The liquid inlet main pipe penetrates through the heat dissipation box and is hermetically connected to the heat dissipation box.

[0018] Further, the second three-way solenoid valve is in threaded seal connection with the liquid outlet main pipe, the first liquid outlet branch pipe and the second liquid outlet branch pipe. The second three-way solenoid valve is used to switch the connection between the first liquid outlet branch pipe, the second liquid outlet branch pipe and the liquid outlet main pipe. The liquid outlet main pipe penetrates through the heat dissipation box and is hermetically connected to the heat dissipation box.

[0019] Further, the clamping mechanism includes a support plate and a clamping plate located inside the support plate. The cross-section of the support plate is in a "C" shape, and the support plate is welded and fixed to both sides of the bottom surface of the first liquid storage strip and the second liquid storage strip.

[0020] Furthermore, a threaded sleeve is welded and fixed to the center of the clamping plate surface facing the support plate. Sliding sleeves are welded and fixed to the clamping plate surfaces on both sides of the threaded sleeve. A threaded rod threadedly connected to the threaded sleeve is inserted into the threaded sleeve, and a sliding rod is inserted into the sliding sleeve.

[0021] The support plate has a through hole for the threaded rod to pass through. One end of the threaded rod is connected to the through hole bearing. The end face of the threaded rod away from the threaded sleeve has a cross opening. One end of the sliding rod is welded and fixed to the support plate.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] The liquid cooling system for server racks utilizes liquid cooling technology to replace traditional air cooling, significantly improving heat dissipation efficiency. By evenly distributing ventilation holes on the top of the rack and installing heat sinks and heat-conducting coils at these holes, the coolant efficiently absorbs heat from inside the rack, while avoiding the reduced heat dissipation efficiency caused by airflow obstruction in traditional air cooling methods. The high thermal conductivity of the heat-conducting coils ensures rapid heat transfer and dissipation, overcoming the technical bottleneck of limited heat dissipation in existing technologies.

[0024] This invention's liquid cooling heat dissipation device effectively achieves temperature-controlled coolant circulation by employing an alternating operation of the first and second liquid reservoirs. The dynamic switching function of the temperature-controlled three-way solenoid valve automatically adjusts the circuit according to the coolant temperature, further improving cooling efficiency. When the coolant temperature rises, heat is released to the outside environment through contact between the heat sink and the air, achieving rapid cooling of the coolant. Compared to traditional air-cooled systems, liquid cooling circulation not only improves heat dissipation but also extends the service life of the coolant.

[0025] This device features a rational structural design, achieving stable fixation of the liquid storage strip through a clamping mechanism. The combined design of the support plate, clamping plate, and sliding sleeve in the clamping mechanism ensures stable installation even under vibration during operation. Furthermore, a sealed frame structure seals the heat sink box to the outer wall of the cabinet, preventing external dust and moisture from entering the cabinet. Compared to traditional cooling methods, the liquid cooling system maintains the airtightness of the cabinet interior, effectively improving the operational stability and safety of the components within.

[0026] This utility model's liquid cooling heat dissipation device ensures high-efficiency heat dissipation performance while reducing fan noise and equipment power consumption, providing a superior solution for applications such as data centers. Simultaneously, the threaded sealing connection simplifies equipment maintenance and coolant replacement, improving ease of use. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the cabinet and ventilation holes of this utility model;

[0029] Figure 3 This is a top view of the present invention;

[0030] Figure 4 This is a bottom view of the heat dissipation box and heat conduction coil of this utility model;

[0031] Figure 5 This is a three-dimensional schematic diagram of the first liquid storage strip, tray, and clamping plate of this utility model;

[0032] Figure 6 This is a cross-sectional schematic diagram of the first liquid storage bar and heat sink of this utility model.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Cabinet; 2. Ventilation holes; 3. Heat sink box; 4. First liquid reservoir; 5. Second liquid reservoir; 6. Heat transfer coil; 7. Main inlet pipe; 8. First inlet branch pipe; 9. Second inlet branch pipe; 10. First three-way solenoid valve; 11. Main outlet pipe; 12. First outlet branch pipe; 13. Second outlet branch pipe; 14. Second three-way solenoid valve; 15. Heat sink; 16. Support plate; 17. Clamping plate; 18. Threaded sleeve; 19. Sliding sleeve; 20. Sliding rod; 21. Threaded rod; 22. Sealing frame. Detailed Implementation

[0035] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0036] Example 1:

[0037] like Figures 1-4 As shown, a liquid cooling heat dissipation device for a service cabinet includes a cabinet 1. The top wall of the cabinet 1 is uniformly provided with heat dissipation holes 2. A liquid cooling heat dissipation mechanism is provided on the top surface of the cabinet 1 around the heat dissipation holes 2. The liquid cooling heat dissipation mechanism includes a heat dissipation box 3, a heat conduction coil 6 located in the heat dissipation box 3, and a first liquid storage strip 4 and a second liquid storage strip 5 fixed on both sides of the heat dissipation box 3. The two ends of the first liquid storage strip 4 and the second liquid storage strip 5 are fixed to the cabinet 1 by a clamping mechanism. The heat conduction coil 6 serves as the main flow path of the coolant. Its design purpose is to fully absorb the heat emitted from the heat dissipation holes 2 when the coolant circulates, so as to ensure that the internal temperature of the cabinet 1 is effectively controlled.

[0038] The heat-conducting coil 6 is connected to an inlet manifold 7 and an outlet manifold 11 at both ends. A circulation pump is installed on the inlet manifold 7. The two end walls of the first liquid storage bar 4 facing the second liquid storage bar 5 are respectively connected to a first inlet branch pipe 8 and a first outlet branch pipe 12. The two end walls of the second liquid storage bar 5 facing the first liquid storage bar 4 are respectively connected to a second inlet branch pipe 9 and a second outlet branch pipe 13. The circulation pump provides the power for the coolant to circulate in the pipeline, ensuring that the coolant can flow efficiently and remove the heat in the heat-conducting coil 6. The first liquid storage bar 4 and the second liquid storage bar 5 achieve alternating operation of the coolant through a compact liquid cooling circuit, thereby improving heat dissipation efficiency.

[0039] The first inlet branch pipe 8 and the second inlet branch pipe 9 are connected to the main inlet pipe 7 through the first three-way solenoid valve 10, and the first outlet branch pipe 12 and the second outlet branch pipe 13 are connected to the main outlet pipe 11 through the second three-way solenoid valve 14. The first three-way solenoid valve 10 and the second three-way solenoid valve 14 are both temperature-controlled solenoid valves. Their function is to automatically switch the cooling circuit according to the change of coolant temperature, thereby realizing the dynamic adjustment of coolant and ensuring the efficient operation of the heat dissipation device.

[0040] like Figure 1 and 4 As shown, the bottom of the heat sink 3 is open, and a sealing frame 22 integrally formed with it is fitted on the outer wall of the heat sink 3. The bottom surface of the sealing frame 22 is sealed and fitted to the outer wall of the cabinet 1. The sealing frame 22 is made of flexible sealing material, which can effectively prevent the leakage of coolant or hot air, and at the same time ensure the airtight connection between the heat sink 3 and the cabinet 1, thereby preventing external dust or moisture from entering the cabinet and further improving the safety and reliability of the operation of electronic components in the cabinet 1.

[0041] like Figure 5 and 6 As shown, the first liquid reservoir 4 and the second liquid reservoir 5 are hollow structures. Heat sinks 15, welded to each other, penetrate the bottom wall of both the first liquid reservoir 4 and the second liquid reservoir 5. The heat sinks 15 are made of aluminum. A liquid injection hole is provided on one side wall of the first liquid reservoir 4 and the second liquid reservoir 5, and a sealing plug is screwed into the threaded hole. The heat sink 15 is made of aluminum with high thermal conductivity. Its design purpose is to utilize the flow of coolant within the liquid reservoir to dissipate heat, and to further release heat through contact between the heat sink 15 and the air, thereby improving the cooling effect. The sealing plug provides the liquid injection sealing function of the liquid reservoir, facilitating the replacement and replenishment of coolant.

[0042] like Figure 1 , Figure 3 and Figure 4As shown, the first three-way solenoid valve 10 is thread-sealed and connected to the liquid inlet main pipe 7, the first liquid inlet branch pipe 8, and the second liquid inlet branch pipe 9. The first three-way solenoid valve 10 is used to switch the connection between the first liquid inlet branch pipe 8, the second liquid inlet branch pipe 9, and the liquid inlet main pipe 7. The liquid inlet main pipe 7 passes through the heat dissipation box 3 and is hermetically connected to the heat dissipation box 3. The second three-way solenoid valve 14 is thread-sealed and connected to the liquid outlet main pipe 11, the first liquid outlet branch pipe 12, and the second liquid outlet branch pipe 13. The second three-way solenoid valve 14 is used to switch the connection between the first liquid outlet branch pipe 12, the second liquid outlet branch pipe 13, and the liquid outlet main pipe 11. The liquid outlet main pipe 11 passes through the heat dissipation box 3 and is hermetically connected to the heat dissipation box 3. The thread-sealed structure design not only ensures the tightness of the coolant flow circuit but also facilitates the rapid disassembly and assembly of components during later maintenance.

[0043] As Figure 1 and Figure 5 As shown, the clamping mechanism includes a support plate 16 and a clamping plate 17 located inside the support plate 16. The cross-section of the support plate 16 is in a "U" shape. The support plate 16 is welded and fixed to the bottom surfaces on both sides of the first liquid storage strip 4 and the second liquid storage strip 5. The design of the support plate 16 provides a stable installation foundation, ensuring that the first liquid storage strip 4 and the second liquid storage strip 5 do not shake or displace during the operation of the cabinet 1.

[0044] A threaded sleeve 18 is welded and fixed at the center of the surface of the clamping plate 17 facing the support plate 16. Sliding sleeves 19 are welded and fixed to the surfaces of the clamping plate 17 on both the upper and lower sides of the threaded sleeve 18. A threaded rod 21 is inserted into the threaded sleeve 18 and is thread-connected thereto. A sliding rod 20 is inserted into the sliding sleeve 19. Through the guiding function of the sliding sleeve 19, the sliding rod 20 ensures that the clamping plate 17 moves in a straight line during adjustment, avoiding unstable fixation caused by deviation. One end of the threaded rod 21 is connected to the through hole on the support plate 16 by a bearing, and the other end is provided with a cross slot for screwdriver operation. One end of the sliding rod 20 is welded and fixed to the support plate 16, providing additional support force to enhance the stability of the clamping mechanism.

[0045] Embodiment 2:

[0046] In a practical application, a liquid cooling system was used to test the heat dissipation of a data center rack. The rack measures 1200mm × 600mm × 2000mm and houses multiple servers with a combined power consumption of 8kW. The heat dissipation coils in the system are made of high thermal conductivity copper, with a wall thickness of 1mm and an inner diameter of 12mm. The coolant used is a commercially available industrial-grade ethylene glycol aqueous solution (1:1 ratio). During the experiment, the coolant circulated in the pipeline at a flow rate of 15L / min using a circulating pump (model QDX10-16-1.1), and the heat dissipation coils absorbed the heat discharged from the ventilation holes. A temperature-controlled three-way solenoid valve (model WX-3T12) automatically switched to the backup coolant reservoir when the coolant temperature reached 45℃. The experimental results showed that the temperature of the components inside the rack remained stably below 30℃, a reduction of more than 20℃ compared to traditional air cooling methods.

[0047] Example 3:

[0048] This invention is used for heat dissipation in long-term operation industrial control cabinets. The control cabinet measures 1000mm × 500mm × 1500mm and contains numerous high-heat modules with a total power consumption of 10kW. Both the first and second coolant reservoirs are made of 304 stainless steel, 2mm thick, and use Freon R134a as the internal coolant. The heat sinks are 20 anodized aluminum sheets, 0.8mm thick and 100mm long. The heat sinks efficiently dissipate heat from the circulating coolant to the outside by contacting the air. In experiments, the coolant temperature inside the control cabinet rapidly decreased from 50℃ to 30℃, and the reservoirs were switched every 30 minutes, ensuring stable long-term heat dissipation.

[0049] Example 4:

[0050] In high-density server applications, this invention was used to optimize coolant circulation within a server rack. The rack measures 1500mm × 800mm × 2000mm and has an internal power consumption of 12kW. It employs a heatsink box and sealing frame mounting method, with the external sealing frame made of high-temperature resistant silicone rubber (temperature range -40℃ to +200℃) to ensure internal airtightness. The circulation pump flow rate was set to 20L / min, and multi-point temperature control monitoring was used for the heat transfer coils and coolant flow path. During the experiment, the system monitored the switching frequency of the temperature-controlled three-way solenoid valve and coolant temperature changes in real time. The results showed that the coolant temperature remained consistently between 28℃ and 32℃, with no condensation on the outer wall of the rack, and the equipment operated stably.

[0051] Example 5:

[0052] This invention addresses heat dissipation needs in complex environments, such as high-humidity, high-dust industrial environments. During testing, the external humidity of the server rack reached 90%, and the dust concentration was 0.5 mg / m³. 3 The heatsink and cabinet exterior are sealed with a frame structure made of EPDM (ethylene propylene diene monomer) material, offering excellent waterproof and dustproof performance. The coolant is an environmentally friendly ethylene glycol aqueous solution at a ratio of 4:6. The circulation pump is an IP68 dustproof and waterproof model (e.g., JVP-2000). Experiments show that even in harsh environments, the component temperature inside the cabinet remains below 35℃, and the sealed frame effectively prevents dust and moisture from entering, ensuring long-term stable operation of the equipment.

[0053] Example 6:

[0054] To verify the noise control effect, the device of this invention was operated in a noise-sensitive laboratory environment. The cabinet dimensions were 1800mm × 800mm × 2000mm, and the internal power consumption was 15kW. A low-noise model (such as the DCP5800, with noise levels below 40dB) was selected for the circulation pump. The heat transfer coils and liquid reservoirs were made of copper-aluminum composite material, possessing excellent heat dissipation performance and corrosion resistance. Experiments showed that the external ambient noise of the cabinet was controlled below 45dB, the equipment operated smoothly, and the heat dissipation efficiency was improved by 30%, while ensuring the quiet environment required by the laboratory.

[0055] The working principle of this utility model is as follows:

[0056] During operation, the sealing frame 22 is first fitted to the outer wall of the cabinet 1, and the heat sink 3 can completely cover the heat sink 2. Then, a screwdriver is inserted into the cross-shaped hole on the threaded rod 21 and the threaded rod 21 is turned. Since the sliding sleeve 19 can move along the axis of the sliding rod 20, and there are two symmetrically arranged sliding sleeves 19, the clamping plate 17 can only move in a straight line. When the threaded rod 21 rotates, it can push the threaded sleeve 18 to move. The clamping plate 17 moves synchronously with the threaded sleeve 18 and abuts against the outer wall of the cabinet 1. The two clamping plates 17 cooperate with each other to fix the first liquid storage strip 4 and the second liquid storage strip 5 on the cabinet 1.

[0057] Next, open the injection hole and inject an appropriate amount of coolant into the first liquid storage bar 4 and the second liquid storage bar 5, and seal the injection hole with the sealing plug. When the cabinet 1 is running, the internal components continuously generate heat, and the heat is discharged through the heat dissipation hole 2 and comes into contact with the heat conduction coil 6.

[0058] In its initial state, the first three-way solenoid valve 10 connects the first inlet branch pipe 8 and the inlet main pipe 7. In its initial state, the second three-way solenoid valve 14 connects the first outlet branch pipe 12 and the outlet main pipe 11. After the circulation pump is powered on, it can pump out the coolant in the first liquid storage bar 4 and pump it into the heat conduction coil 6 through the first inlet branch pipe 8 and the inlet main pipe 7. When the coolant flows in the heat conduction coil 6, it can carry away the heat on the heat conduction coil 6. Finally, the coolant flows back to the first liquid storage bar 4 through the outlet main pipe 11 and the first outlet branch pipe 12. This cycle repeats, and the heat in the cabinet 1 can be continuously carried away through the heat conduction coil 6 to achieve heat dissipation of the cabinet 1.

[0059] After the coolant in the first reservoir 4 has been circulating for a long time, the coolant temperature will rise, which will greatly reduce the cooling effect. In order to improve the cooling effect, the first three-way solenoid valve 10 and the second three-way solenoid valve 14 are both temperature-controlled. After detecting the rise in the temperature of the flowing coolant, the first three-way solenoid valve 10 switches the second inlet branch pipe 9 and the inlet main pipe 7 to connect, and the second three-way solenoid valve 14 switches the second outlet branch pipe 13 and the outlet main pipe 11 to connect. In this way, the coolant in the first reservoir 4 does not participate in the operation. At this time, the heat of the coolant can be gradually conducted to the air through the heat sink 15, and the coolant can cool down on its own.

[0060] At the same time, the coolant in the second liquid storage bar 5 is pumped out and pumped into the heat conduction coil 6 through the second liquid inlet branch pipe 9 and the liquid inlet main pipe 7. When the coolant flows in the heat conduction coil 6, it can carry away the heat on the heat conduction coil 6. Finally, the coolant flows back to the second liquid storage bar 5 through the liquid outlet main pipe 11 and the second liquid outlet branch pipe 13. This cycle repeats, and the heat in the cabinet 1 can be continuously carried away through the heat conduction coil 6, so as to achieve the heat dissipation operation of the cabinet 1 again.

[0061] The coolant in the first and second liquid reservoirs 4 and 5 can operate alternately, effectively improving the liquid cooling effect. Furthermore, compared to traditional air cooling, this device's cooling method keeps the cabinet 1 in a sealed state, preventing external moisture and dust from entering, which is beneficial to the operational stability and safety of the components inside the cabinet 1.

[0062] The first three-way solenoid valve 10 and the second three-way solenoid valve 14 are products already available on the market, such as the temperature control solenoid valve disclosed in prior art CN214889045U. Therefore, the principle and structure of the first three-way solenoid valve 10 and the second three-way solenoid valve 14 will not be described in detail.

[0063] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A service cabinet liquid cooling heat dissipation device, comprising a cabinet (1), the top wall of the cabinet (1) is uniformly provided with heat dissipation holes (2), and the top surface of the cabinet (1) around the heat dissipation holes (2) is provided with a liquid cooling heat dissipation mechanism, characterized in that the liquid cooling heat dissipation mechanism comprises a heat dissipation box (3), a heat conduction coil pipe (6) located in the heat dissipation box (3), and a first liquid storage strip (4) and a second liquid storage strip (5) fixed on both sides of the heat dissipation box (3), both ends of the first liquid storage strip (4) and the second liquid storage strip (5) are fixed on the cabinet (1) through a clamping mechanism, both ends of the heat conduction coil pipe (6) are communicated with a liquid inlet main pipe (7) and a liquid outlet main pipe (11), the liquid inlet main pipe (7) is provided with a circulating pump, both ends of the wall body on the side of the first liquid storage strip (4) facing the second liquid storage strip (5) are respectively communicated with a first liquid inlet branch pipe (8) and a first liquid outlet branch pipe (12), and both ends of the wall body on the side of the second liquid storage strip (5) facing the first liquid storage strip (4) are respectively communicated with a second liquid inlet branch pipe (9) and a second liquid outlet branch pipe (13), the first liquid inlet branch pipe (8) and the second liquid inlet branch pipe (9) are communicated with the liquid inlet main pipe (7) through a first three-way electromagnetic valve (10), and the first liquid outlet branch pipe (12) and the second liquid outlet branch pipe (13) are communicated with the liquid outlet main pipe (11) through a second three-way electromagnetic valve (14).

2. The liquid cooling heat dissipation device for service cabinet according to claim 1, characterized in that: the bottom of the heat dissipation box (3) is open, a sealing frame (22) is sleeved on the outer wall of the heat dissipation box (3) and integrally formed with the heat dissipation box (3), and the bottom surface of the sealing frame (22) is sealingly attached to the outer wall of the cabinet (1).

3. The liquid cooling heat dissipation device for service cabinet according to claim 1, characterized in that: the first liquid storage strip (4) and the second liquid storage strip (5) are hollow structures, the bottom end wall of each of the first liquid storage strip (4) and the second liquid storage strip (5) penetrates a heat dissipation fin (15) welded thereto, and the heat dissipation fin (15) is an aluminum fin.

4. The liquid cooling heat dissipation device for service cabinet according to claim 3, characterized in that: a liquid injection hole is formed in one side wall of the first liquid storage strip (4) and the second liquid storage strip (5), and a sealing plug is screwed into the liquid injection hole.

5. The liquid cooling heat dissipation device for service cabinet according to claim 1, characterized in that: the first three-way electromagnetic valve (10), the liquid inlet main pipe (7), the first liquid inlet branch pipe (8) and the second liquid inlet branch pipe (9) are all threadedly and sealingly connected, the first three-way electromagnetic valve (10) is used for switching the first liquid inlet branch pipe (8), the second liquid inlet branch pipe (9) and the liquid inlet main pipe (7) to be communicated, and the liquid inlet main pipe (7) penetrates the heat dissipation box (3) and is sealingly connected with the heat dissipation box (3).

6. The liquid cooling heat dissipation device for service cabinet according to claim 5, characterized in that: the second three-way electromagnetic valve (14), the liquid outlet main pipe (11), the first liquid outlet branch pipe (12) and the second liquid outlet branch pipe (13) are all threadedly and sealingly connected, the second three-way electromagnetic valve (14) is used for switching the first liquid outlet branch pipe (12), the second liquid outlet branch pipe (13) and the liquid outlet main pipe (11) to be communicated, and the liquid outlet main pipe (11) penetrates the heat dissipation box (3) and is sealingly connected with the heat dissipation box (3).

7. The liquid cooling heat dissipation device for service cabinet according to claim 1, characterized in that: the clamping mechanism comprises a supporting plate (16) and a clamping plate (17) located on the inner side of the supporting plate (16), the cross section of the supporting plate (16) is "H" shaped, and the supporting plate (16) is welded and fixed to the bottom surfaces on both sides of the first liquid storage strip (4) and the second liquid storage strip (5).

8. The liquid cooling heat dissipation device for service cabinet according to claim 7, characterized in that: The clamping plate (17) is welded and fixed with a threaded sleeve (18) at the center of the surface on the side of the supporting plate (16), the upper and lower sides of the threaded sleeve (18) are welded and fixed with sliding sleeves (19), the threaded sleeve (18) is inserted with a threaded rod (21) which is screwed with the threaded sleeve (18), the sliding sleeve (19) is inserted with a sliding rod (20), The supporting plate (16) is provided with a through hole for the threaded rod (21) to pass through, one end of the threaded rod (21) is connected with the through hole bearing, the side end face of the threaded rod (21) away from the threaded sleeve (18) is provided with a cross, one end of the sliding rod (20) is welded and fixed with the supporting plate (16).

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