Cold plate type liquid cooling cabinet system

Abstract

The utility model discloses a cold plate type liquid cooling cabinet system which comprises a first liquid cooling cabinet and a second liquid cooling cabinet. CDU equipment is mounted in each of the first liquid cooling cabinet and the second liquid cooling cabinet; the CDU equipment secondary side water supply pipeline of the first liquid cooling cabinet is communicated with the CDU equipment secondary side water supply pipeline of the second liquid cooling cabinet through a first connecting pipe; the CDU equipment secondary side water return pipeline of the first liquid cooling cabinet is communicated with the CDU equipment secondary side water return pipeline of the second liquid cooling cabinet through a second connecting pipe; a first valve body is installed on the first connecting pipe, and a second valve body is installed on the second connecting pipe. According to the utility model, the problem that the distributed CDU is difficult to realize unit-level redundant backup is solved, the defect that the centralized CDU occupies the shelf rate is avoided, and meanwhile, the centralized CDU backup has the advantage of high reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of infrastructure and IT support, and in particular to a cold plate type liquid cooling cabinet system. Background Art

[0002] With the rapid advent of the intelligent AI era, chip cooling requirements continue to increase, bringing innovation to data center cooling solutions. With traditional air-cooled air conditioners unable to meet the heat load of servers in computer rooms, liquid-cooled air conditioners, with their superior heat dissipation capabilities, are gaining popularity and are gaining traction among major operators and internet companies.

[0003] Liquid cooling can be basically divided into three types according to the different heat dissipation forms: cold plate type, immersion type and spray type. Judging from the current market feedback, cold plate liquid cooling is more conducive to the transformation of traditional computer rooms, and the transformation of cold plate servers is also easier to achieve. In addition, the heat dissipation capacity of cold plate liquid cooling can basically meet the heat dissipation needs of current high-heat devices such as GPUs (Graphics Processing Units, graphics processors). Therefore, cold plate liquid cooling still occupies a mainstream position in the current market.

[0004] Cold plate liquid cooling is generally categorized as centralized or distributed, depending on the layout of the Cooling Distribution Units (CDUs). Centralized CDUs are typically located at the head of a row of cabinets and work in conjunction with a prefabricated secondary piping network beneath the raised floor to deliver cooling fluid to the manifolds within each row of cabinets. To ensure reliability, a centralized liquid cooling system typically includes two centralized CDUs, creating a 1+1 redundancy solution. Distributed CDUs, unlike centralized CDUs, do not occupy row head space but are integrated into each cabinet. The primary piping network connects to the CDU, and the CDU secondary side is connected to the manifold via flexible pipes within the cabinet. Compared to centralized liquid cooling solutions, this reduces secondary piping costs and space beneath the raised floor. Similarly, to ensure reliability, distributed CDUs incorporate redundancy, primarily through redundant backups of vulnerable components within the system, such as the circulation pump and pressure and temperature sensors.

[0005] Currently, the industry's data center cold plate liquid cooling solutions are generally divided into centralized and distributed types based on the layout of the CDU. To increase the racking rate of the computer room, the cold plate liquid cooling solution is more inclined to adopt distributed CDU in subsequent development (reducing the head rack position occupied by the centralized CDU). However, since the distributed CDU is generally arranged inside the cabinet and is limited by the cabinet space, the overall backup of the CDU cannot be achieved. Utility Model Content

[0006] The purpose of the utility model is to provide a cold plate type liquid cooling cabinet system to solve the deficiencies in the prior art, and the system can realize cabinet-level hot backup of distributed CDU.

[0007] The utility model provides a cold plate liquid cooling cabinet system, comprising a first liquid cooling cabinet and a second liquid cooling cabinet; a CDU device is installed in each of the first liquid cooling cabinet and the second liquid cooling cabinet; a secondary side water supply pipeline of the CDU device of the first liquid cooling cabinet is connected to a secondary side water supply pipeline of the CDU device of the second liquid cooling cabinet through a first connecting pipe; a secondary side return water pipeline of the CDU device of the first liquid cooling cabinet is connected to a secondary side return water pipeline of the CDU device of the second liquid cooling cabinet through a second connecting pipe;

[0008] A first valve body is installed on the first connecting pipe, and a second valve body is installed on the second connecting pipe.

[0009] In the cold plate liquid cooling cabinet system as described above, preferably, a third valve body is installed on the secondary side water supply pipeline of the CDU equipment of the first liquid cooling cabinet, and a fourth valve body is installed on the secondary side water supply pipeline of the CDU equipment of the second liquid cooling cabinet.

[0010] In the cold plate liquid cooling cabinet system as described above, preferably, the third valve body is integrated inside the CDU device of the first liquid cooling cabinet; and the fourth valve body is integrated inside the CDU device of the second liquid cooling cabinet.

[0011] In the cold plate liquid cooling cabinet system as described above, preferably, the third valve body is located between the first connecting pipe and the CDU device of the first liquid cooling cabinet; and the fourth valve body is located between the first connecting pipe and the CDU device of the second liquid cooling cabinet.

[0012] In the cold plate liquid cooling cabinet system as described above, preferably, the first connecting pipe is connected to the secondary side water supply pipeline of the CDU equipment of the first liquid cooling cabinet through a first tee.

[0013] In the cold plate liquid cooling cabinet system as described above, preferably, the first connecting pipe is connected to the secondary side water supply pipeline of the CDU equipment of the second liquid cooling cabinet through a second tee.

[0014] In the cold plate liquid cooling cabinet system as described above, preferably, one end of the second connecting pipe is connected to the secondary side return water pipeline of the CDU equipment of the first liquid cooling cabinet through a third tee, and the other end is connected to the secondary side return water pipeline of the CDU equipment of the second liquid cooling cabinet through a fourth tee.

[0015] In the cold plate liquid cooling cabinet system as described above, preferably, there are multiple second liquid cooling cabinets.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The utility model connects the secondary side water supply pipeline of the CDU equipment of the first liquid cooling cabinet with the secondary side water supply pipeline of the CDU equipment of the second liquid cooling cabinet through a first connecting pipe, installs a first valve body on the first connecting pipe, connects the secondary side return water pipeline of the CDU equipment of the first liquid cooling cabinet with the secondary side return water pipeline of the CDU equipment of the second liquid cooling cabinet through a second connecting pipe, and installs a second valve body on the second connecting pipe. When the CDU equipment of the first liquid cooling cabinet fails, the CDU equipment of the second liquid cooling cabinet can be used to provide cooling to the server of the first liquid cooling cabinet, or when the CDU equipment of the second liquid cooling cabinet fails, the CDU equipment of the first liquid cooling cabinet can be used to provide cooling to the server of the second liquid cooling cabinet, thereby ensuring the reliability of the computer room and realizing cabinet-level hot backup of distributed CDU.

[0018] 2. The system design of this utility model is simple and reliable. It solves the problem that distributed CDU is difficult to achieve unit-level redundant backup. It avoids the disadvantage of centralized CDU's shelf occupation rate while also having the high reliability advantage of centralized CDU backup.

[0019] 3. The present invention requires relatively little modification to the existing solution, and has high feasibility for implementation. In combination with the corresponding control method, the cold plate liquid cooling solution of the distributed CDU is adopted in the computer room, which can realize cabinet-level hot backup and effectively improve reliability. The feasibility and necessity of market application are both high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a cold plate liquid cooling cabinet system of the utility model;

[0021] Figure 2 This is a schematic diagram of the status when the CDU equipment of the first liquid cooling cabinet and the CDU equipment of the second liquid cooling cabinet are both operating normally;

[0022] Figure 3 This is a schematic diagram of the status after a CDU device fails or loses power.

[0023] Description of reference numerals:

[0024] 1 - Return water pipe of first liquid-cooling cabinet, 2 - Supply water pipe of first liquid-cooling cabinet, 3 - Return water pipe of second liquid-cooling cabinet, 4 - Supply water pipe of second liquid-cooling cabinet, 5 - First and second-side return water interface, 6 - First and second-side supply water interface, 7 - Second and second-side return water interface, 8 - Second and second-side supply water interface, 9 - Third valve body, 10 - Fourth valve body, 11 - Second valve body, 12 - First valve body, 13 - First tee, 14 - Second tee, 15 - Third tee, 16 - Fourth tee, 17 - First liquid-cooling cabinet, 18 - Second liquid-cooling cabinet, 19 - CDU, 20 - First connecting pipe, 21 - Second connecting pipe. DETAILED DESCRIPTION

[0025] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] The embodiment of the present utility model: Figure 1 As shown, a cold plate liquid cooling cabinet system includes a first liquid cooling cabinet 17 and a second liquid cooling cabinet 18; a CDU device 19 is installed in each of the first liquid cooling cabinet 17 and the second liquid cooling cabinet 18; a secondary side water supply pipeline of the CDU device 19 of the first liquid cooling cabinet 17 is connected to a secondary side water supply pipeline of the CDU device 19 of the second liquid cooling cabinet 18 via a first connecting pipe 20; a secondary side return water pipeline of the CDU device 19 of the first liquid cooling cabinet 17 is connected to a secondary side return water pipeline of the CDU device 19 of the second liquid cooling cabinet 18 via a second connecting pipe 21;

[0027] The first valve body 12 is mounted on the first connecting pipe 20, and the second valve body 11 is mounted on the second connecting pipe 21. Both the first valve body 12 and the second valve body 11 are electric two-way valves.

[0028] When both CDU devices 19 are working properly, refer to Figure 2 As shown, the first valve body 12 and the second valve body 11 are closed, the first liquid cooling cabinet 17 and the second liquid cooling cabinet 18 are independent of each other, and their respective secondary side water supply pipelines form a circulation loop. Figure 3 As shown, the first valve body 12 and the second valve body 11 are opened, the secondary side water supply pipeline of the CDU equipment 19 of the first liquid cooling cabinet 17 is connected with the secondary side water supply pipeline of the CDU equipment 19 of the second liquid cooling cabinet 18, and the secondary side return water pipeline of the CDU equipment 19 of the first liquid cooling cabinet 17 is connected with the secondary side return water pipeline of the CDU equipment 19 of the second liquid cooling cabinet 18 through the second connecting pipe 21, forming a new circulation loop, and the two CDU equipment 19 are in hot backup with each other.

[0029] As an implementation method, the first liquid cooling cabinet 17 is provided with a server, a first liquid cooling cabinet return water distribution pipe 1, a first liquid cooling cabinet supply water distribution pipe 2 and a CDU device 19; the outer shell of the first liquid cooling cabinet 17 is provided with a first secondary side return water interface 5 and a first secondary side supply water interface 6 connected to the CDU device 19 inside it. The first secondary side supply water interface 6 is connected to the first liquid cooling cabinet supply water distribution pipe 2 through the secondary side supply pipeline, and the first secondary side return water interface 5 is connected to the first liquid cooling cabinet return water distribution pipe 1 through the secondary side return water pipeline, forming a cooling circulation loop. The second liquid cooling cabinet 18 is provided with a server, a second liquid cooling cabinet return water distribution pipe 3, a second liquid cooling cabinet supply water distribution pipe 4 and a CDU device 19; the outer shell of the second liquid cooling cabinet 18 is provided with a second secondary side return water interface 7 and a second secondary side supply water interface 8 connected to the CDU device 19 inside it. The second secondary side supply water interface 8 is connected to the second liquid cooling cabinet supply water distribution pipe 4 through the secondary side supply pipeline, and the second secondary side return water interface 7 is connected to the second liquid cooling cabinet return water distribution pipe 3 through the secondary side return water pipeline, forming a cooling circulation loop.

[0030] The secondary water supply pipeline of the CDU device 19 in the first liquid-cooling cabinet 17 is connected to the secondary water supply pipeline of the CDU device 19 in the second liquid-cooling cabinet 18 via a first connecting pipe 20. The secondary return water pipeline of the CDU device 19 in the first liquid-cooling cabinet 17 is connected to the secondary return water pipeline of the CDU device 19 in the second liquid-cooling cabinet 18 via a second connecting pipe 21. A first valve body 12 is installed on the first connecting pipe 20, and a second valve body 11 is installed on the second connecting pipe 21. The CDU devices 19 in the two cabinets perform hot backup for each other. When one CDU device 19 fails or loses power, the other CDU device 19 enters hot backup mode. In this mode, to ensure matching cooling capacity and flow in the dual systems, the operating mode of the CDU is adjusted, such as increasing the current secondary circulation pump speed or starting the backup pump to enter dual-pump parallel mode.

[0031] A third valve body 9 is installed on the secondary water supply pipeline of the CDU equipment 19 in the first liquid-cooling cabinet 17, and a fourth valve body 10 is installed on the secondary water supply pipeline of the CDU equipment 19 in the second liquid-cooling cabinet 18. The third and fourth valve bodies 9, 10 can shut off the flow path to the corresponding CDU equipment 19 if a fault or power outage occurs. Both the third and fourth valve bodies 9, 10 are electrically operated two-way valves. When the CDU 19 starts up, the corresponding third and fourth valve bodies 9 and 10 open. If the CDU 19 fails or loses power, the corresponding third and fourth valve bodies 9 and 10 close. When both CDUs 19 start up and operate normally without any faults, the first and second valve bodies 12 and 11 close. If at least one CDU 19 fails or loses power, the other CDU 19 controls the first and second valve bodies 12 and 11 to open. If both CDUs 19 fail or lose power, the third and fourth valve bodies 9 and 10 switch to a normally closed state. As an implementation, the third valve body 9 is integrated within the CDU 19 of the first liquid-cooled cabinet 17, and the fourth valve body 10 is integrated within the CDU 19 of the second liquid-cooled cabinet 18.

[0032] In a specific implementation, the third valve body 9 can also be located between the first connecting pipe 20 and the CDU equipment 19 of the first liquid-cooling cabinet 17; and the fourth valve body 10 can be located between the first connecting pipe 20 and the CDU equipment 19 of the second liquid-cooling cabinet 18. The first connecting pipe 20 is connected to the secondary water supply pipeline of the CDU equipment 19 of the first liquid-cooling cabinet 17 via a first tee 13. The first tee 13 has three connection ports, two of which are located on the secondary water supply pipeline of the CDU equipment 19 of the first liquid-cooling cabinet 17, and the other connection port is connected to one end of the first connecting pipe 20. The first connecting pipe 20 is connected to the secondary water supply pipeline of the CDU equipment 19 of the second liquid-cooling cabinet 18 via a second tee 14. The second tee 14 has three connection ports, two of which are located on the secondary water supply pipeline of the CDU equipment 19 of the second liquid-cooling cabinet 18, and the other connection port is connected to one end of the first connecting pipe 20.

[0033] One end of the second connecting pipe 21 is connected to the secondary return water pipeline of the CDU equipment 19 of the first liquid cooling cabinet 17 through the third tee 15, and the other end is connected to the secondary return water pipeline of the CDU equipment 19 of the second liquid cooling cabinet 18 through the fourth tee 16; the third tee 15 has three connecting ports, two of which are located on the secondary return water pipeline of the CDU equipment 19 of the first liquid cooling cabinet 17, and the other connecting port is connected to one end of the second connecting pipe 21; the fourth tee 16 has three connecting ports, two of which are located on the secondary return water pipeline of the CDU equipment 19 of the second liquid cooling cabinet 18, and the other connecting port is connected to the other end of the second connecting pipe 21.

[0034] As an implementation method, there are multiple second liquid cooling cabinets 18, so that redundancy of multiple cabinets can be achieved.

[0035] When installing in the computer room, plan the cabinet layout in advance to ensure an even number of cabinets. During the installation process, use two cabinets as a group to back up each other and build the corresponding secondary side pipelines.

[0036] The present invention also provides a control method for a cold plate type liquid cooling cabinet system, comprising the cold plate type liquid cooling cabinet system as described above, and the control steps are as follows;

[0037] Obtaining the working status of the CDU device 19; and controlling the working status of the first valve body 12 and the second valve body 11 according to the number of CDU devices 19 in the fault state;

[0038] When the CDU equipment 19 is started and running normally and has no faults, the first valve body 12 and the second valve body 11 are controlled to be closed;

[0039] When part of the CDU equipment 19 is in a fault state, the first valve body 12 and the second valve body 11 are controlled to be in an open state;

[0040] When the CDU devices 19 all fail or lose power, the first valve body 12 and the second valve body 11 switch to the default normally closed state.

[0041] It also includes that the CDU device 19 obtains the feedback signal when the first valve body 12 and the second valve body 11 are opened, and determines whether it is in a fault state; if so, maintains the current state; if not, the CDU starts the hot backup mode.

[0042] Specifically, the third and fourth valve bodies 9 and 10 are controlled by their corresponding CDU devices 19 and are normally closed by default. When the CDU device 19 starts operating, the corresponding third and fourth valve bodies 9 and 10 switch to the open state. When the CDU device 19 fails or loses power, the corresponding third and fourth valve bodies 9 and 10 switch to the closed state. The first and second valve bodies 12 and 11 must be controlled by both distributed CDU devices 19 in the system. The key point is that when both CDU devices 19 in the system start operating normally and have no faults, the first and second valve bodies 12 and 11 are closed. When at least one CDU device 19 in the system fails or loses power, the other CDU device 19 controls the first and second valve bodies 12 and 11 to open. When both CDU devices 19 in the system fail or lose power, the third and fourth valve bodies 9 and 10 switch to the normally closed state.

[0043] The first valve body 12 and the second valve body 11 also need to provide feedback signals to the two CDU devices 19 respectively. When the CDU device 19 detects the opening signals of the first valve body 12 and the second valve body 11, it first determines whether it is in a fault state. If so, it maintains the current state. If not, the CDU device 19 starts the hot backup mode. In this mode, to ensure the matching of cooling capacity and flow under the dual system, the operating mode of the CDU device 19 will be adjusted, such as increasing the current secondary side circulation pump speed value, or starting the backup pump and entering the dual pump parallel mode. When the CDU device 19 pump selection has a margin, the pump speed can be directly increased to achieve the effect of increasing the system flow. When the CDU device 19 pump selection margin is insufficient, the system flow can also be increased by running the two pumps in parallel simultaneously inside the CDU device 19.

[0044] The present invention solves the problem that it is difficult for distributed CDUs to achieve redundant backup at the unit level. It not only avoids the disadvantage of the centralized CDU in terms of shelf occupancy rate, but also has the high reliability advantage of centralized CDU backup. The system design scheme is flexible, and the two-way shut-off valve used to cut off the CDU flow path in the fault state can be considered to be incorporated into the CDU pipeline during the design process, and can also be considered to be compatible with the external pipeline. The system design is simple and reliable. After the CDU equipment in the first liquid cooling cabinet fails, the CDU equipment in the second liquid cooling cabinet is used to provide cooling to the server in the first liquid cooling cabinet, thereby ensuring the reliability of the computer room and achieving cabinet-level hot backup of the distributed CDU. The present invention has relatively small modifications to the existing scheme and has high feasibility for implementation. In conjunction with the corresponding control method, the cold plate liquid cooling scheme of the distributed CDU in the computer room can achieve cabinet-level hot backup, and the reliability is effectively improved. The feasibility and necessity of market application are both high.

[0045] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above are only preferred embodiments of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A cold plate liquid cooling cabinet system, characterized in that: The invention comprises a first liquid cooling cabinet (17) and a second liquid cooling cabinet (18); a CDU device (19) is installed in each of the first liquid cooling cabinet (17) and the second liquid cooling cabinet (18); a secondary side water supply pipeline of the CDU device (19) of the first liquid cooling cabinet (17) is connected to a secondary side water supply pipeline of the CDU device (19) of the second liquid cooling cabinet (18) through a first connecting pipe (20); a secondary side return water pipeline of the CDU device (19) of the first liquid cooling cabinet (17) is connected to a secondary side return water pipeline of the CDU device (19) of the second liquid cooling cabinet (18) through a second connecting pipe (21); A first valve body (12) is installed on the first connecting pipe (20), and a second valve body (11) is installed on the second connecting pipe (21).

2. The cold plate liquid cooling cabinet system according to claim 1, characterized in that: A third valve body (9) is installed on the secondary side water supply pipeline of the CDU equipment (19) of the first liquid cooling cabinet (17), and a fourth valve body (10) is installed on the secondary side water supply pipeline of the CDU equipment (19) of the second liquid cooling cabinet (18).

3. The cold plate liquid cooling cabinet system according to claim 2, characterized in that: The third valve body (9) is integrated inside the CDU device (19) of the first liquid cooling cabinet (17); and the fourth valve body (10) is integrated inside the CDU device (19) of the second liquid cooling cabinet (18).

4. The cold plate liquid cooling cabinet system according to claim 2, characterized in that: The third valve body (9) is located between the first connecting pipe (20) and the CDU device (19) of the first liquid cooling cabinet (17); and the fourth valve body (10) is located between the first connecting pipe (20) and the CDU device (19) of the second liquid cooling cabinet (18).

5. The cold plate liquid cooling cabinet system according to claim 1, characterized in that: The first connecting pipe (20) is connected to the secondary side water supply pipeline of the CDU equipment (19) of the first liquid cooling cabinet (17) through a first tee piece (13).

6. The cold plate liquid cooling cabinet system according to claim 1, characterized in that: The first connecting pipe (20) is connected to the secondary side water supply pipeline of the CDU equipment (19) of the second liquid cooling cabinet (18) through a second tee piece (14).

7. The cold plate liquid cooling cabinet system according to claim 1, characterized in that: One end of the second connecting pipe (21) is connected to the secondary side return water pipeline of the CDU equipment (19) of the first liquid cooling cabinet (17) through a third three-way piece (15), and the other end is connected to the secondary side return water pipeline of the CDU equipment (19) of the second liquid cooling cabinet (18) through a fourth three-way piece (16).

8. The cold plate liquid cooling cabinet system according to any one of claims 2 to 7, characterized in that: There are multiple second liquid cooling cabinets (18).

Images