Liquid cooling system and server

Abstract

A liquid cooling system, comprising a liquid cooling body, a liquid guide pipe, a liquid collection structure and a suction device. The liquid cooling body is configured to exchange heat with a heating element. The liquid guide pipe is in communication with the liquid cooling body. The liquid collection structure is configured to collect liquid leaking from at least one of the liquid cooling body and the liquid guide pipe. The suction device is provided with a negative pressure channel, wherein the negative pressure channel is provided with a suction port and is arranged in the liquid collection structure, and the negative pressure channel is configured to connect to a suction apparatus, such that the liquid in the liquid collection structure is suctioned into the negative pressure channel and is then discharged or stored via the negative pressure channel. By means of the suction device of the liquid cooling system, a collection path for the leaked liquid is further extended, such that the effect of the leakage in the liquid cooling system on an electronic device can be delayed, and a longer operation time is provided for related operations after the leakage. Moreover, by means of negative pressure suction, layout space requirements are lowered. Also provided is a server, which also achieves the above technical effects.

Description

Liquid cooling system and server

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 19, 2024, with application number 202410084896.X and invention name “A Liquid Cooling System and Server”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of heat dissipation technology, and more particularly to a liquid cooling system and a server. Background Art

[0003] As server power density increases, higher requirements are placed on heat dissipation. Liquid cooling offers higher heat exchange efficiency than air cooling, meeting these requirements. Currently, cold plate cooling is the predominant method for server liquid cooling. This method, also known as a liquid cold plate, exchanges heat with high-heat-generating components in the server. The cold plate then connects to a heat exchanger via inlet and outlet pipes, rapidly transferring heat to the server's exterior.

[0004] During server operation, leaks may occur at locations such as the cooling plate, inlet and outlet pipes, or welds between the cooling plate and the pipes due to fatigue, vibration, and other factors. Exposure to leaking high-pressure liquid can cause short circuits and other malfunctions in the server's electronic components. Therefore, it is necessary to inspect the cooling system for leaks and, if detected, shut down the server immediately. While this approach can reduce the likelihood of server failures due to water exposure, it requires a short window of time and requires swift action. This typically requires an emergency forced power outage. Otherwise, continued leakage can easily cause electronic component failures, making data storage difficult.

[0005] Summary of the Invention

[0006] In view of this, the object of the present invention is to provide a liquid cooling system and server, the structural design of which can suck out or store leaked liquid to delay the impact of liquid cooling system leakage on electronic equipment and provide longer operating time for related operations after leakage.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A liquid cooling system comprises a liquid cooling body for exchanging heat with a heating element and a liquid guide tube connected to the liquid cooling body; further comprising a liquid collecting structure and a suction device, wherein the liquid collecting structure is used to collect liquid leaked from at least one of the liquid cooling body and the liquid guide tube, and the suction device has a negative pressure channel, the negative pressure channel has a suction port and is provided in the liquid collecting structure, and the negative pressure channel is used to be connected to a suction device to suck the liquid in the liquid collecting structure into the negative pressure channel and discharge or store it through the negative pressure channel.

[0009] Optionally, in the above liquid cooling system, the liquid collecting structure is provided with a collection area with a reduced height, and the suction port is provided in the collection area.

[0010] Optionally, in the above liquid cooling system, the suction device includes a suction pipe and a connecting piece, the connecting piece is fixed to the liquid collecting structure, and a portion of the connecting piece extends above the collection area and is connected to the suction pipe.

[0011] Optionally, in the above-mentioned liquid cooling system, the connecting member is provided with a protrusion toward the bottom surface of the collection area, the protrusion extends into the collection area, and there is a first preset gap between the bottom surface of the protrusion and the bottom surface of the collection area, there is a second preset gap between the outer peripheral surface of the protrusion and the side wall of the collection area, and the connecting member is provided with a through hole at the position corresponding to the collection area, and the suction pipe is arranged in the through hole.

[0012] Optionally, in the above-mentioned liquid cooling system, the projection of the connecting member on the plane where the top edge of the collection area is located is at least partially located within the collection area; and / or, the bottom surface of the part of the connecting member located above the collection area is located at a preset distance above the top of the collection area.

[0013] Optionally, in the above liquid cooling system, the suction pipe is threadedly connected to the connecting piece.

[0014] Optionally, in the above-mentioned liquid cooling system, the end surface of the liquid collecting structure is provided with a plurality of drainage ribs, one end of the plurality of drainage ribs converges and corresponds to the suction port, and the other end extends divergently to the surroundings of the liquid collecting structure.

[0015] Optionally, the above-mentioned liquid cooling system includes a plurality of the liquid collecting structures, and the suction device includes the negative pressure channels respectively arranged corresponding to the respective liquid collecting structures, and the negative pressure channels are connected.

[0016] Optionally, the above-mentioned liquid cooling system further includes a detection device for detecting the liquid in the liquid collection structure, and the suction device is used to start when the detection device detects that there is a preset amount of liquid in the liquid collection structure.

[0017] Optionally, in the above-mentioned liquid cooling system, the end surface of the suction device provided with the suction port is provided with a protrusion for abutting against the end surface of the liquid collection structure, so that there is a gap between the end surface of the suction device provided with the suction port and the end surface of the liquid collection structure.

[0018] The liquid cooling system provided by the present invention includes a liquid cooling body, a liquid conduit, a liquid collecting structure, and a suction device. The liquid cooling body is used to exchange heat with a heating element, the liquid conduit communicates with the liquid cooling body, the liquid collecting structure is used to collect liquid leaking from at least one of the liquid cooling body and the liquid conduit, and the suction device includes a negative pressure channel having a suction port and disposed in the liquid collecting structure. The negative pressure channel is connected to a suction device to draw liquid from the liquid collecting structure into the negative pressure channel for discharge or storage through the negative pressure channel.

[0019] The liquid cooling system provided by the present invention is applied to collect the liquid leaked from the liquid cooling body or the liquid guide tube by setting a liquid collecting structure to prevent the liquid from leaking directly to the electronic devices, thereby improving the safety of the system. And by setting the suction device, after the suction device is started, the negative pressure generated at the suction port of the liquid collecting structure can suck the liquid in the liquid collecting structure and discharge or store it through the negative pressure channel. It can be seen that, on the one hand, the suction device further extends the collection path of the leaked liquid, which can delay the impact of the leakage of the liquid cooling system on the electronic equipment and provide a longer operating time for related operations after the leakage, such as facilitating data storage and normal shutdown. On the other hand, the negative pressure suction method reduces the space requirements of the layout, and the negative pressure channel can make full use of the vertical space, facilitate the overall structural layout, and facilitate the leakage of liquid to the outside of the equipment for discharge as waste liquid, or to an area away from the electronic devices.

[0020] To achieve the above object, the present invention further provides a server comprising any of the above liquid cooling systems. Since the above liquid cooling system has the above technical effects, the server comprising the liquid cooling system should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] FIG1 is a schematic structural diagram of a liquid cooling system according to a specific embodiment of the present invention;

[0023] FIG2 is a schematic diagram of a portion of the internal structure of FIG1 ;

[0024] FIG3 is a schematic top view of the liquid collecting structure and the connecting member in FIG1 ;

[0025] FIG4 is a schematic diagram of the AA cross section of FIG3 ;

[0026] FIG5 is a partial enlarged schematic diagram of portion A in FIG4 ;

[0027] FIG6 is a schematic top view of the liquid collecting structure in FIG3 .

[0028] The markings in the drawings are as follows: liquid cooling body 1 , liquid guide tube 2 , liquid collecting structure 3 , suction device 4 ; collecting area 31 , suction port 401 , suction tube 41 , connecting member 42 , protrusion 421 , first preset gap L1 , second preset gap L2 , through hole 402 . DETAILED DESCRIPTION

[0029] An embodiment of the present invention discloses a liquid cooling system and a server for collecting and pumping out or storing leaked liquid, thereby delaying the impact of liquid cooling system leakage on electronic equipment and providing a longer operating time for related operations after the leakage.

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The liquid cooling system provided in the present application includes a liquid cooling body and a liquid guide tube, and the liquid guide tube is connected to the corresponding liquid cooling body. The liquid cooling body is generally a liquid cooling plate. Of course, in some states, it can also be a block or other structure. The liquid cooling body is used to exchange heat with the heating elements of electronic equipment such as servers. It can be understood that the heating elements here can include elements that generate heat themselves during operation, such as processors, and can also include elements that absorb heat from elements that generate heat themselves and generate heat indirectly. At least one side of the liquid cooling body is a heating surface, which is used to be close to the electronic component to be dissipated. At this time, the heating surface of the liquid cooling body and the heat dissipation surface of the electronic component are in thermal contact.

[0032] The liquid conduit is used to drain the high-temperature liquid from the liquid-cooling body and introduce the low-temperature liquid. It should be noted that in this application, the liquid in the liquid-cooling body and the liquid conduit can be either cooling water or a refrigerant. Cooling water includes, but is not limited to, water or a water mixture, such as antifreeze cooling water with the addition of ethylene glycol, and refrigerant includes, but is not limited to, a refrigerant with the addition of fluorine.

[0033] The liquid guide tube in the present application has a liquid inlet channel and a liquid outlet channel for liquid circulation, so that the high-temperature liquid in the liquid cooling body can flow out and the low-temperature liquid can flow in. It can be understood that it can include a separately arranged liquid inlet tube and liquid outlet tube, or an integrated multi-lumen tube, and the different lumens of the multi-lumen tube are used for the inflow and outflow of liquid respectively. In the present application, in response to possible leakage of the liquid cooling body and the liquid guide tube, a corresponding structure is provided to reduce the impact of leakage on the electronic devices in the equipment equipped with the liquid cooling system. In the following embodiments, the above structure is mainly described. Other structures of the liquid cooling system can refer to the existing technology and will not be repeated here.

[0034] In one embodiment, referring to Figures 1 to 4, the liquid cooling system provided by the present invention includes a liquid cooling body 1, a liquid guide tube 2, a liquid collecting structure 3 and a suction device 4. Among them, the liquid collecting structure 3 is used to collect liquid leaked from at least one of the liquid cooling body 1 and the liquid guide tube 2. The shape and position of the liquid collecting structure 3 can be set as needed and are not specifically limited here. The suction device 4 has a negative pressure channel, which can be the inner cavity of a pipe or a hollow channel surrounded by the wall of other structures such as a shell. The negative pressure channel has a suction port 401 and the suction port 401 is provided in the liquid collecting structure 3. The negative pressure channel is used to connect with the suction device. The suction device is started to form a negative pressure in the negative pressure channel, so that the suction port 401 can suck the liquid in the liquid collecting structure 3 into the negative pressure channel and discharge or store it through the negative pressure channel. Depending on the working conditions of the specific liquid cooling system, when the suction device is not started, the negative pressure channel can also be in a normal pressure state. It is understood that the direction and path of the negative pressure channel can be used to pump the liquid to the outside of the device equipped with the liquid cooling system. For example, the end of the negative pressure channel away from the suction port 401 can be extended to the device housing and connected to the outside world to discharge the pumped liquid as waste liquid, or the end of the negative pressure channel away from the suction port 401 can be connected to an external storage device to store the waste liquid. Alternatively, the direction and path of the negative pressure channel can be set to pump the liquid to an area away from the electronic device for storage, such as pumping it into a liquid storage bottle of the device for storage.

[0035] The liquid cooling system provided by the present invention is applied, and the liquid leaked from the liquid cooling body 1 or the liquid conduit 2 is collected by setting a liquid collecting structure 3 to prevent the liquid from leaking directly to the electronic device, thereby improving the safety of the system. And by setting the suction device 4, after the suction device is started, the negative pressure generated at the suction port 401 provided at the liquid collecting structure 3 can suck the liquid in the liquid collecting structure 3, and discharge or store it through the negative pressure channel. It can be seen that the suction device 4 further extends the collection path of the leaked liquid on the one hand, and can delay the impact of the leakage of the liquid cooling system on the electronic equipment, providing a longer operating time for related operations after the leakage, such as facilitating data storage and normal shutdown. On the other hand, the negative pressure suction method reduces the space requirements of the layout, and the negative pressure channel can make full use of the vertical space, facilitate the overall structural layout, and facilitate the leakage of liquid to the outside of the equipment for discharge as waste liquid, or to an area away from the electronic device.

[0036] In some embodiments, the liquid cooling system is provided with a suction device, that is, the negative pressure channel is connected to the suction device built into the liquid cooling system, and the suction device is used to form a negative pressure in the negative pressure channel, thereby collecting the liquid in the liquid collection structure 3. In other embodiments, the liquid cooling system can also be provided with a suction device. In this case, a corresponding interface is provided on the negative pressure channel, and a suction device is connected to the interface to provide negative pressure to the negative pressure channel. The suction device includes but is not limited to a water pump, and its power and other factors can be selected and set according to the suction force required, and are not specifically limited here.

[0037] In some embodiments, referring to Figures 3-6 , the liquid collection structure 3 is provided with a collection area 31 having a reduced height, and the suction port 401 is provided in the collection area 31. It will be understood that the height here refers to the vertical height, that is, the collection area 31 is formed by a local depression or inclination of the end surface of the liquid collection structure 3, and can specifically be a collection groove. Since liquid flows from a higher position to a lower position under the action of its own gravity, by providing the collection area 31 in the liquid collection structure 3, leaked liquid is better collected in the collection area 31. The suction port 401 is provided in the collection area 31, thereby more efficiently pumping the leaked liquid into the negative pressure channel, and discharging or storing the negative pressure channel. The specific shape, size, and position of the collection area 31 can be set accordingly according to the structure of the liquid collection structure 3 and the position of the suction device 4. In cases where the size of the liquid collection structure 3 is similar to that of the suction port 401 and the suction force generated by the suction port 401 is sufficient, the liquid collection structure 3 can also be provided with the same height, that is, the collection area 31 can be omitted.

[0038] In some embodiments, referring to Figures 2 to 5, the suction device 4 includes a suction tube 41 and a connector 42. The connector 42 is fixed to the liquid collection structure 3, and a portion of the connector 42 extends above the collection area 31 and is connected to the suction tube 41. It can be understood that the connector 42 can be a structure separate from the suction tube 41, or it can be a protruding portion formed outside the tube wall of the suction tube 41, that is, the connector 42 can also be a part of the suction tube 41. The suction tube 41 has a simple structure, occupies little space, and its direction can be adjusted according to the internal space of the equipment. The connector 42 facilitates the installation of the suction tube 41 to limit the position of the suction tube 41 relative to the collection area 31.

[0039] In some embodiments, the suction pipe 41 is a metal pipe, which has good deformability and bendability, so it can be arranged according to the space during pipe installation, and has better versatility. It is particularly suitable for environments with complex internal spaces.

[0040] In some embodiments, referring to Figures 4-5 , the connector 42 is provided with a protrusion 421 on the bottom surface facing the collection area 31. The protrusion 421 extends into the collection area 31, and a first preset gap L1 is defined between the bottom surface of the protrusion 421 and the bottom surface of the collection area 31. A second preset gap L2 is defined between the outer peripheral surface of the protrusion 421 and the sidewall of the collection area 31. Furthermore, the connector 42 is provided with a through hole 402 at a position corresponding to the collection area 31, and the suction tube 41 is disposed in the through hole 402. It will be understood that the through hole 402 extends through the protrusion 421, so that when the suction device is activated, a negative pressure can be generated between the bottom surface of the protrusion 421 and the bottom surface of the collection area 31 to draw in liquid. As described above, the smaller first preset gap L1 and second preset gap L2 facilitate the generation of negative pressure to draw in leaked liquid. Furthermore, the second preset gap L2 provides space for leaked liquid on the end surface of the liquid collection structure 3 to flow into the collection area 31. Specifically, the sizes of the first preset gap L1 and the second preset gap L2 can be the same or different. The specific values ​​are set according to needs and are not specifically limited here.

[0041] In some embodiments, referring to FIG6 , the collection area 31 is provided at one side edge of the liquid collecting tank, and the collection area 31 includes a straight portion extending perpendicularly to the edge and a hemispherical portion connected to the straight portion, the outer diameter of the hemispherical portion being equal to the width of the straight portion, the connector 42 including a plate-shaped connecting body and a pagoda joint provided on the connecting body, the connecting body being perpendicularly arranged to the straight portion, and the connecting body being provided with a bolt hole and being fixedly connected to the liquid collecting structure 3 by bolts, the bottom of the connecting body being provided with a circular protrusion, the circular protrusion being inserted into the hemispherical portion and part of the straight portion, and the bottom surface and outer peripheral surface of the circular protrusion respectively having a gap with the wall surface of the collection area 31, the circular protrusion being provided with a through hole 402 connected to the pagoda joint, and the pagoda joint being sealed and fixedly connected to the suction pipe 41. As set up as above, full utilization of space is achieved while ensuring the flow of leaked liquid to the collection area 31, better forming negative pressure, and easy disassembly and assembly.

[0042] In some embodiments, the projection of the connector 42 on the plane where the top edge of the collection area 31 is located is at least partially located within the collection area 31; and / or the bottom surface of the portion of the connector 42 located above the collection area 31 is located at a preset distance above the top of the collection area 31. It is understandable that the collection area 31 as a whole is located below the plane where the top edge of the collection area 31 is located, and the plane where the top edge of the collection area 31 is located can specifically be a horizontal plane, then the projection of the connector 42 on the horizontal plane is at least partially located within the collection area 31. In the case where the collection area 31 is a collection tank, the top edge of the collection area 31 and the notch edge of the collection tank. The portion of the connector 42 located above the collection area 31 can be provided with a through hole 402, and the suction pipe 41 is provided in the through hole 402. By arranging the connector 42 so that its projection on the aforementioned plane is at least partially located within the collection area 31, the connector 42 does not block the top of the collection area 31. Thus, liquid leaking from the end surface of the liquid collection structure 3 where the collection area 31 is located can flow into the collection area 31, ensuring secure installation of the suction tube 41 while not blocking the liquid from the end surface from flowing into the collection area 31. Alternatively, a predetermined distance can be reserved between the bottom surface of the connector 42 located above the collection area 31 and the top of the collection area 31. That is, the portion of the connector 42 above the collection area 31 is higher than the top of the collection area 31. This also provides space for liquid leaking from the end surface of the liquid collection structure 3 where the collection area 31 is located to flow into the collection area 31 without blocking the flow of the leaked liquid. In other embodiments, if the end surface of the liquid collection structure 3 is not used to collect leaked liquid, such as when leaked liquid overflows upward from the bottom channel of the collection area 31, the connector 42 can also block the top of the collection area 31 to better create negative pressure.

[0043] In some embodiments, the suction tube 41 is sealed and sleeved outside the top joint of the connector 42, and the lumen of the suction tube 41 is connected to the through hole 402, so that the bottom opening of the through hole 402 forms the suction port 401. Alternatively, the suction tube 41 can be sealed and passed through the through hole 402, and the lumen of the suction tube 41 is connected to the through hole 402. When the bottom end of the suction tube 41 is located inside the through hole 402, the bottom opening of the through hole 402 forms the suction port 401; when the bottom end of the suction tube 41 extends outside the through hole 402, the bottom opening of the suction tube 41 is the suction port 401.

[0044] Specifically, the suction tube 41 is threadedly connected to the connector 42. This threaded connection facilitates assembly and disassembly, and while providing a secure connection, it also effectively seals, further simplifying the structure. Furthermore, the threaded connection allows for continuous adjustment of the relative height of the suction tube 41 and connector 42 to better align with the collection area 31.

[0045] In some embodiments, to better generate negative pressure, a gap is created between the end surface of the suction device 4, which is provided with the suction port 401, and the end surface of the liquid collecting structure 3. This gap can be formed by the structure of the suction device 4 and / or the position of the device in relation to the liquid collecting structure 3. Providing this gap not only ensures liquid flow but also facilitates the generation of negative pressure, thereby better achieving the suction of leaked liquid.

[0046] Specifically, the end surface of the suction device 4 with the suction port 401 is provided with raised points for abutting against the end surface of the liquid collection structure 3, thereby creating a gap between the end surface of the suction device 4 with the suction port 401 and the end surface of the liquid collection structure 3. The number of raised points can be one or more, and these points act as abutments between the suction device 4 and the liquid collection structure 3, thereby creating a gap between the end surface of the suction device 4 with the suction port 401 and the end surface of the liquid collection structure 3. The size of the raised points is preferably as small as possible to minimize the impact on liquid flow.

[0047] In some embodiments, the end face of the liquid collection structure 3 is provided with a plurality of drainage ribs, one end of the plurality of drainage ribs converges and corresponds to the suction port 401, and the other end extends to the four sides of the liquid collection structure 3. By providing the drainage ribs, the liquid on the end face is guided and drained. One end of the plurality of drainage ribs converges, and the other end extends to the four sides of the liquid collection structure 3, so that the leaked liquid around the end face of the liquid collection structure 3 is gathered to the middle under the drainage effect of the drainage ribs, and the suction port 401 is provided at the gathering position to more efficiently suck the leaked liquid. In the case of providing the drainage ribs, the gathering area 31 formed by the height reduction mentioned above may not be provided to simplify the structure. Of course, on the basis of providing the above-mentioned gathering area 31, drainage ribs may be provided on the end face of the liquid collection structure 3 where the gathering area 31 is provided, and one end of the drainage ribs extends to the edge of the gathering area 31.

[0048] In some embodiments, as shown in Figures 1-2 , multiple liquid collection structures 3 are included, and a suction device 4 includes negative pressure channels corresponding to each liquid collection structure 3. Multiple liquid collection structures 3 are provided based on the potential leak locations in the liquid cooling system to better collect leaked liquid. Furthermore, the suction device 4 includes a negative pressure channel corresponding to each liquid collection structure 3, each of which is connected to a suction device to aspirate leaked liquid from each liquid collection structure 3.

[0049] In some embodiments, the negative pressure channels corresponding to the liquid collecting structures 3 are interconnected. Thus, only one suction device is required for each negative pressure channel to achieve synchronous suction of the negative pressure channels, resulting in a simple structure and low cost. In other embodiments, separate suction devices may be provided for each negative pressure channel.

[0050] In some embodiments, the liquid cooling system further includes a detection device for detecting the liquid in the liquid collecting structure 3, and the suction device is used to start when the detection device detects the presence of a preset amount of liquid in the liquid collecting structure 3. By setting the detection device, the suction device will not start when no leakage is detected, and the suction device will be started when leakage is detected to suck the leaked liquid. The above arrangement reduces the energy consumption of the liquid cooling system and avoids unnecessary negative pressure environment. The size of the specific preset amount can be set as needed, such as starting the suction device when the presence of liquid is detected in the liquid collecting structure 3, or starting the suction device when the leakage in the liquid collecting structure 3 reaches the upper limit of the liquid collecting structure 3. The detection device can specifically be a conventional detection structure such as a liquid sensor or a detection belt for detecting leakage, which is not specifically limited here. In other embodiments, visual inspection can also be used to drive the suction device when leakage is observed. Or the suction device can always be kept started during the operation of the liquid cooling system.

[0051] Based on the liquid cooling system provided in the above embodiments, the present invention further provides a server, which includes any one of the liquid cooling systems in the above embodiments. Since the server adopts the liquid cooling system in the above embodiments, the beneficial effects of the server can be referred to the above embodiments.

[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0053] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid cooling system, comprising a liquid cooling main body (1) for exchanging heat with a heating element and a liquid guide pipe (2) communicated with the liquid cooling main body (1); characterized in that, It further includes a liquid collection structure (3) and a suction device (4). The liquid collection structure (3) is used to collect the liquid leaked from at least one of the liquid cooling main body (1) and the liquid guide pipe (2). The suction device (4) has a negative pressure channel which has a suction port (401) and is arranged in the liquid collection structure (3), and the negative pressure channel is used to be connected with a suction device to suck the liquid in the liquid collection structure (3) into the negative pressure channel and discharge or store it through the negative pressure channel.

2. The liquid cooling system according to claim 1, wherein The liquid collection structure (3) is provided with a converging area (31) with a reduced height, and the suction port (401) is arranged in the converging area (31).

3. The liquid cooling system according to claim 2, wherein The suction device (4) includes a suction pipe (41) and a connecting piece (42). The connecting piece (42) is fixedly arranged on the liquid collection structure (3), and a part of the connecting piece (42) extends above the converging area (31) and is connected with the suction pipe (41).

4. The liquid cooling system according to claim 3, wherein, The bottom surface of the connecting piece (42) facing the converging area (31) is provided with a protruding part (421). The protruding part (421) extends into the converging area (31), and there is a first preset gap (L1) between the bottom surface of the protruding part (421) and the bottom surface of the converging area (31). There is a second preset gap (L2) between the outer peripheral surface of the protruding part (421) and the side wall of the converging area (31). And the connecting piece (42) is provided with a through hole (402) corresponding to the converging area (31), and the suction pipe (41) is arranged in the through hole (402).

5. The liquid cooling system according to claim 3, characterized in that, The projection of the connecting piece (42) on the plane where the top edge of the converging area (31) is located is at least partially located in the converging area (31); and / or, the bottom surface of the part of the connecting piece (42) located above the converging area (31) is at a preset distance above the top of the converging area (31).

6. The liquid cooling system according to claim 3, wherein, The suction pipe (41) is threadedly connected with the connecting piece (42).

7. The liquid cooling system according to any one of claims 1-6, characterized in that, There are multiple liquid collection structures (3). The suction device (4) includes the negative pressure channels respectively corresponding to each liquid collection structure (3), and each negative pressure channel is communicated with each other.

8. The liquid cooling system according to any one of claims 1-6, characterized in that, It further includes a detection device for detecting the liquid in the liquid collection structure (3), and the suction device is used to start when the detection device detects that there is a preset stock of liquid in the liquid collection structure (3).

9. The liquid cooling system according to any one of claims 1-6, characterized in that, The end surface of the suction device (4) provided with the suction port (401) is provided with convex points for abutting against the end surface of the liquid collection structure (3), so that there is a gap between the end surface of the suction device (4) provided with the suction port (401) and the end surface of the liquid collection structure (3).

10. A server, characterized in that, It includes the liquid cooling system according to any one of claims 1-9.

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