A pull-out type immersion liquid cooling cabinet and maintenance method thereof

Abstract

The present invention relates to a pull-out type immersion liquid cooling cabinet, comprising a cabinet body filled with coolant, a reserved cavity, a coolant conveying device, an isolation device and a control device; the cabinet body is provided with a plurality of server placement cavities interconnected with each other; each server placement cavity is provided with a server pull-out cabinet for storing servers, and the server pull-out cabinet is immersed in the coolant; the server pull-out cabinet is horizontally slidably connected to the cabinet body and can be pulled out of the cabinet body or pushed into the cabinet body; the isolation device is movably connected to the server placement cavity, and is used to isolate the server placement cavity into a closed cavity; the two ends of the coolant conveying device are respectively connected to the reserved cavity and the closed cavity, and are used to convey coolant between the reserved cavity and the closed cavity; the control device is connected to the coolant conveying device, and is used to control the action of the coolant conveying device. The present invention also relates to a maintenance method for a pull-out type immersion liquid cooling cabinet. The side pull-out design improves the convenience of server installation and maintenance and saves costs.

Description

Technical Field

[0001] The invention belongs to the technical field of heat dissipation and cooling of data centers, and in particular relates to a pull-out type immersion liquid cooling cabinet and a maintenance method thereof. Background Art

[0002] With the continuous improvement of chip manufacturing technology, the chip manufacturing process will reach 2nm in the near future, which makes the chip packaging density grow exponentially, and the heat flux density of server chips will continue to increase. Only by taking effective heat dissipation methods can the normal and long-term use of server chips be guaranteed. Today, air cooling for server chips still occupies a dominant position, but traditional air cooling has the problems of low efficiency, high energy consumption and noise pollution, which is inconsistent with the development concept of green data centers.

[0003] Faced with this dilemma, immersion liquid cooling technology has been proposed to replace traditional air cooling. Immersion liquid cooling technology is a highly efficient server heat dissipation technology. It places multiple servers side by side in a cabinet, uses non-conductive liquid to directly immerse the servers, and discharges the liquid in the cabinet to the outside of the cabinet through a liquid circulation device. After being cooled by an external cooling device, the liquid re-enters the cabinet to form a circulation flow, thereby achieving efficient heat dissipation of the server.

[0004] The immersion liquid cooling technology of the prior art has the following technical problems: when the server needs to be maintained, the staff needs to first use a crane to lift the server and then perform maintenance. The convenience of server installation and maintenance is poor, the crane occupies a large space, the operation is cumbersome, and there is a risk of the server falling and being damaged when it is lifted. Summary of the invention

[0005] In view of the technical problems existing in the prior art, one of the objects of the present invention is to provide a pull-out type immersion liquid cooling cabinet, which occupies a small space, has a high safety factor, and improves the convenience of server installation and maintenance.

[0006] In view of the technical problems existing in the prior art, the second object of the present invention is to provide a maintenance method for a pull-out type immersion liquid cooling cabinet, by which the server maintenance can be conveniently performed with a high safety factor.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A pull-out type immersion liquid cooling cabinet comprises a cabinet body filled with cooling liquid, a reserved cavity, a cooling liquid conveying device, an isolation device and a control device;

[0009] The cabinet is provided with a plurality of interconnected server placement cavities;

[0010] Each server placement cavity is provided with a server drawer cabinet for storing the server, and the server drawer cabinet is immersed in the cooling liquid;

[0011] The server drawer cabinet is horizontally slidably connected to the cabinet body and can be pulled out of the cabinet body or pushed into the cabinet body;

[0012] The isolation device is movably connected to the server placement cavity and is used to isolate the server placement cavity into a closed cavity;

[0013] The two ends of the coolant delivery device are respectively connected to the reserved cavity and the closed cavity, and are used to deliver the coolant between the reserved cavity and the closed cavity;

[0014] The control device is connected to the coolant delivery device and is used for controlling the action of the coolant delivery device.

[0015] Furthermore, an alarm device is provided above each server placement cavity, and the alarm device is connected to the control device.

[0016] Furthermore, the warning device is a warning light.

[0017] Furthermore, the cabinet body is provided with a guide rail, and the server drawer cabinet is provided with a slider, which is slidably connected to the guide rail.

[0018] Furthermore, a spoiler is provided between adjacent server placement cavities.

[0019] Furthermore, the spoiler is provided with a plurality of through holes, and each through hole is communicated with the server placement cavity on both sides.

[0020] Furthermore, the coolant delivery device includes a water pump and multiple branch control valves. One end of the water pump is connected to the reserved cavity, and the other end is respectively connected to multiple server placement cavities. The multiple branch control valves correspond one-to-one to the multiple server placement cavities and are used to control the on-and-off of the pipeline between the server placement cavity and the reserved cavity. Each branch control valve is connected to the control device.

[0021] Furthermore, the water pump includes an inlet pump and an outlet pump, and the inlet pump and the outlet pump are connected in parallel between the reserved cavity and the server placement cavity.

[0022] Furthermore, the isolation device includes two partitions, and liquid blocking grooves are respectively provided on both sides of the server placement cavity. The partitions are detachably connected to the liquid blocking grooves vertically. The server pull-out cabinet is provided with a cabinet door, and the enclosed cavity is formed by the two partitions, the cabinet body and the cabinet door of the server pull-out cabinet.

[0023] A maintenance method for a pull-out type immersion liquid cooling cabinet comprises the following steps:

[0024] Step 1: Use an isolation device to isolate the server placement cavity where the server to be maintained is located into a closed cavity, so that the coolant in the closed cavity is not connected to the rest of the coolant in the cabinet, use a coolant delivery device to deliver the coolant in the closed cavity to the reserved cavity, and then horizontally pull out the server drawer cabinet in the closed cavity from the cabinet to take out the server in the server drawer cabinet for maintenance;

[0025] Step 2: Push the server drawer cabinet back into the server placement cavity to form a closed cavity, use the coolant delivery device to deliver the coolant in the reserved cavity back into the closed cavity, the isolation device cancels the isolation of the server placement cavity where the server to be maintained is located, the server placement cavity where the server to be maintained is connected with the other server placement cavities again, and the coolant in the cabinet forms a circulation flow to maintain the heat dissipation function for the other servers in the cabinet;

[0026] Step 3: Repeat step 1 to pull out the server drawer cabinet in the closed cavity from the cabinet body, and put the server that has been maintained into the server drawer cabinet;

[0027] Step 4: Push the server pull-out cabinet back into the server placement cavity to form a closed cavity, use the coolant delivery device to deliver the coolant in the reserved cavity back into the closed cavity, and the isolation device cancels the isolation of the server placement cavity where the server to be maintained is located. The server placement cavity where the server to be maintained is connected with the other server placement cavities again, and the coolant in the cabinet forms a circulation flow to maintain the heat dissipation function of the servers in the cabinet.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The server placement cavity where the server to be maintained is located is isolated as a closed cavity by using an isolation device, and the coolant in the closed cavity is transported to the reserved cavity by using a coolant delivery device, so as to facilitate the server pull-out cabinet to be horizontally pulled out of the cabinet to perform server maintenance. After the server is taken out, the server pull-out cabinet is pushed back into the cabinet. After the isolation device cancels the isolation of the server placement cavity, the coolant in the cabinet resumes flowing and will not hinder the normal heat dissipation of the remaining servers. Since there is no need to use a crane to lift the server from the top of the cabinet, it will not take up too much space and avoid the tedious operation of the crane. The server pull-out cabinet is pulled out of the cabinet horizontally, avoiding the risk of the server falling and being damaged when it is lifted high, thereby improving the safety factor and the convenience of server installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of a pull-out type immersion liquid cooling cabinet provided in an embodiment of the present invention.

[0031] Figure 2 Schematic diagram of the structure of a spoiler provided by an embodiment of the present invention.

[0032] Figure 3 It is a structural schematic diagram of a server drawer cabinet provided in an embodiment of the present invention.

[0033] Figure 4 It is a schematic structural diagram of a coolant delivery device provided in an embodiment of the present invention.

[0034] In the figure:

[0035] 1-cabinet, 11-control box, 12-upper cover, 13-alarm light, 14-liquid blocking tank, 15-groove;

[0036] 2-coolant delivery device, 21-inlet pump, 22-outlet pump, 23-branch control valve, 24-main line, 25-liquid inlet, 26-liquid outlet;

[0037] 3- Server placement cavity;

[0038] 4- Reserved cavity;

[0039] 5-partition;

[0040] 6- Spoiler;

[0041] 7-server drawer cabinet, 71-cabinet door, 72-server fixed frame, 73-slider, 74-guide rail. DETAILED DESCRIPTION

[0042] The present invention is described in further detail below.

[0043] like Figure 1 , Figure 2 As shown, a pull-out type immersion liquid cooling cabinet comprises a cabinet body 1, a cooling liquid conveying device 2 is arranged at the back of the cabinet body 1, and a plurality of server placement cavities 3 and a reserved cavity 4 are arranged inside the cabinet body 1.

[0044] A plurality of server placement chambers 3 are arranged side by side in sequence, each of which is provided with a spoiler 6 and a server drawer 7. The spoiler 6 is welded and fixed between two server drawers 7 and has regularly arranged circular through holes. The server drawer 7 is used to place servers.

[0045] The cabinet 1 includes a control box 11 (control device) and an upper cover plate 12 . Alarm lights 13 corresponding to each server drawer cabinet 7 and capable of working independently are arranged along the length direction of the cabinet 1 .

[0046] Each server drawer cabinet 7 is provided with a liquid blocking groove 14 on both sides. Two removable partitions 5 are placed inside the reserved cavity 4. The two partitions 5 can be respectively inserted into the liquid blocking grooves 14 on both sides of the server drawer cabinet 7 to block the cooling liquid.

[0047] like Figure 1 , Figure 3 As shown, the server drawer cabinet 7 is provided with a cabinet door 71 and a server fixing frame 72 , and a groove 15 is provided around the cabinet door 71 of each server drawer cabinet 7 .

[0048] The two partitions 5 inserted into the liquid blocking groove 14, the cabinet body 1 and the cabinet door 71 of the server drawer cabinet 7 are surrounded to form a closed cavity. The cabinet door 71 of the server drawer cabinet 7 can not only allow the server drawer cabinet 7 to be drawn out of the cabinet body 1, but also form a closed cavity when the server drawer cabinet 7 is pushed into the cabinet body 1, which is convenient for transferring the coolant.

[0049] The server fixing frame 72 adopts a hollow design, and a slider 73 and a guide rail 74 are provided at the bottom thereof. The guide rail 74 is welded and fixed to the bottom of the cabinet body 1 , and the server pull-out cabinet 7 can realize reciprocating motion by sliding the slider 73 on the guide rail 74 .

[0050] The cabinet door 71 is provided with a tenon, a gasket and a bolt. The cabinet door 71 and the cabinet body 1 can be sealed by locking the tenon and the groove 15 with bolts and pressing the gasket. Other methods of the prior art can also be used to achieve locking and sealing.

[0051] like Figure 4 As shown, the coolant delivery device 2 includes an inlet pump 21, an outlet pump 22, a plurality of branch control valves 23 and a main line 24. The inlet pump 21 and the outlet pump 22 are located behind the reserved cavity 4 and are both connected to the reserved cavity 4. The plurality of branch control valves 23 are respectively located behind the plurality of server placement cavities 3 and correspond one-to-one with the plurality of server pull-out cabinets 7. The coolant delivery device 2 also includes a liquid inlet 25 for the coolant to flow into the server placement cavity 3 and a liquid outlet 26 for the coolant to flow out of the server placement cavity 3, so that the coolant can circulate in the cabinet 1 through a liquid circulation device (not shown in the figure).

[0052] When the server is working normally, the cabinet door 71 and the cabinet body 1 are locked and sealed by the tenon, groove 15, gasket and bolt combination. After the coolant flows into the server placement cavity 3 from the liquid inlet 25, it exchanges heat with the server, takes away the heat generated by the server, and the heated coolant flows out through the liquid outlet 26, passes through the external cooling device (not shown in the figure) to take away the heat and then enters the liquid inlet 25 again, thus completing a cycle. When the coolant flows, the circular through hole of the spoiler 6 inside the server placement cavity 3 and the hollow server fixing frame 72 can disturb the coolant to a certain extent, so that the cold and hot fluids inside the server placement cavity 3 are fully mixed, and the local hot spots in the server placement cavity 3 are eliminated. At this time, the components on the coolant delivery device 2, including the inlet pump 21, the outlet pump 22 and the branch control valve 23, are all in an inoperative state, and the liquid in the server placement cavity 3 cannot flow into the reserved cavity 4 through the main line 24.

[0053] A maintenance method of a pull-out type immersion liquid cooling cabinet of the present invention comprises the following steps:

[0054] Step 1: Pull out the server drawer 7

[0055] When a server fails and needs to be taken down for maintenance, the control box 11 receives a corresponding signal and controls the alarm light 13 corresponding to the maintenance server to sound an alarm. The staff is informed by the prompt of the alarm light 13 that the corresponding server needs maintenance.

[0056] Afterwards, the staff opens the upper cover 12 on the cabinet, cuts off the power supply of the server to be maintained, takes out two partitions 5 from the reserved cavity 4, and inserts them into both sides of the server pull-out cabinet 7 where the server to be maintained is located. Since the two partitions 5 inserted in the liquid blocking groove 14, the cabinet body 1 and the cabinet door 71 of the server pull-out cabinet 7 form a closed cavity, the coolant in the server placement cavity 3 where the server to be maintained is located is basically isolated from the coolant in the other cavities, and even if there is a small leakage, it will not affect the withdrawal of the maintained server.

[0057] After inserting the partition 5, under the control of the control box 11, the branch control valve 23 corresponding to the server that needs maintenance is opened while the other branch control valves 23 remain closed, and the inlet pump 21 starts to start. At this time, the coolant in the closed cavity flows along the main line 24 to the reserved cavity 4 under the drive of the inlet pump 21. After a period of time, when the coolant in the closed cavity is pumped out, that is, when the control box 11 receives the signal that the inlet pump 21 is idling and the coolant no longer drips on the server pull-out cabinet 7, the branch control valve 23 corresponding to the server that needs maintenance and the inlet pump 21 are closed.

[0058] After the coolant transfer is completed, the alarm light 13 is turned off. After the staff unplugs the relevant lines, they loosen the bolts on the cabinet door 71, pull the handle on the cabinet door 71, and pull the entire server drawer cabinet 7 out of the cabinet body 1. At this time, the server is taken out of the server fixing frame 72 for maintenance.

[0059] Step 2: Close the server drawer 7

[0060] After the server is taken out, push the corresponding server drawer cabinet 7 into the cabinet body 1, lock the bolts on the cabinet door 71, and the two partitions 5, the cabinet body 1 and the cabinet door 71 of the server drawer cabinet 7 are enclosed to form a closed cavity. After that, under the control of the control box 11, the branch control valve 23 corresponding to the server that needs maintenance is opened again, and the outlet pump 22 starts to start, but the remaining branch control valves 23 remain closed. The coolant in the reserved cavity 4 flows into the closed cavity along the main line 24 driven by the outlet pump 22. After a period of time, the coolant in the reserved cavity 4 is exhausted, that is, when the control box 11 receives the signal of the outlet pump 22 idling, the branch control valve 23 and the outlet pump 22 corresponding to the server that needs maintenance are closed. Finally, the staff takes out the two partitions 5 on both sides of the closed cavity, puts them back into the reserved cavity 4 and covers the upper cover 12. At this time, the coolant in the cabinet body 1 resumes normal circulation.

[0061] Step 3: Pull out the server drawer 7 again

[0062] When the server is maintained, the required server drawer cabinet 7 is pulled out from the cabinet body 1 again, and the maintained server is placed into the server drawer cabinet 7;

[0063] Step 4: Close the server drawer 7 again

[0064] Take out two partitions 5 from the reserved cavity 4, insert them into both sides of the server pull-out cabinet 7 where the server to be maintained is located, push the server pull-out cabinet 7 back into the server placement cavity 3 to form a closed cavity, and after the coolant in the reserved cavity 4 is transported back into the closed cavity, the staff takes out the two partitions 5 on both sides of the server to be maintained, puts them back into the reserved cavity 4 and covers the upper cover 12, thereby completing the entire maintenance process.

[0065] The present invention provides a new solution for the maintenance and replacement of the server in the later stage. The server cabinet door 71 is designed to be pull-out, and the side removal method avoids the use of a traditional crane device, thereby improving the convenience of server installation and maintenance and saving costs.

[0066] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A pull-out immersion liquid cooling cabinet, characterized in that: It includes a cabinet filled with coolant, a reserved cavity, a coolant conveying device, an isolation device and a control device; The cabinet is provided with a plurality of interconnected server placement cavities; Each server placement cavity is provided with a server drawer cabinet for storing the server, and the server drawer cabinet is immersed in the cooling liquid; The server drawer cabinet is horizontally slidably connected to the cabinet body and can be pulled out of the cabinet body or pushed into the cabinet body; The isolation device is movably connected to the server placement cavity and is used to isolate the server placement cavity into a closed cavity; The two ends of the coolant delivery device are respectively connected to the reserved cavity and the closed cavity, and are used to deliver the coolant between the reserved cavity and the closed cavity; The control device is connected to the coolant delivery device and is used for controlling the action of the coolant delivery device.

2. A pull-out type immersion liquid cooling cabinet according to claim 1, characterized in that: An alarm device is arranged above each server placement cavity, and the alarm device is connected to the control device.

3. A pull-out type immersion liquid cooling cabinet according to claim 2, characterized in that: The warning device is a warning light.

4. A pull-out type immersion liquid cooling cabinet according to claim 1, characterized in that: The cabinet body is equipped with a guide rail, and the server drawer cabinet is provided with a slider, which is slidably connected to the guide rail.

5. A pull-out type immersion liquid cooling cabinet according to claim 1, characterized in that: A spoiler is provided between adjacent server placement cavities.

6. A pull-out type immersion liquid cooling cabinet according to claim 5, characterized in that: The spoiler is provided with a plurality of through holes, and each through hole is communicated with the server placement cavity on both sides.

7. A pull-out type immersion liquid cooling cabinet according to claim 1, characterized in that: The coolant delivery device includes a water pump and multiple branch control valves. One end of the water pump is connected to the reserved cavity, and the other end is respectively connected to multiple server placement cavities. The multiple branch control valves correspond to the multiple server placement cavities one by one, and are used to control the on-off of the pipeline between the server placement cavity and the reserved cavity. Each branch control valve is connected to the control device.

8. A pull-out type immersion liquid cooling cabinet according to claim 7, characterized in that: The water pump comprises an inlet pump and an outlet pump, and the inlet pump and the outlet pump are connected in parallel between the reserved cavity and the server placement cavity.

9. A pull-out type immersion liquid cooling cabinet according to claim 1, characterized in that: The isolation device includes two partitions, and liquid blocking grooves are respectively provided on both sides of the server placement cavity. The partitions are detachably connected to the liquid blocking grooves vertically. The server pull-out cabinet is provided with a cabinet door. The closed cavity is formed by the two partitions, the cabinet body and the cabinet door of the server pull-out cabinet.

10. A maintenance method for a pull-out immersion liquid cooling cabinet, characterized in that: The following steps are included: Step 1: Use an isolation device to isolate the server placement cavity where the server to be maintained is located into a closed cavity, use a coolant delivery device to deliver the coolant in the closed cavity to the reserved cavity, and then horizontally pull out the server drawer cabinet in the closed cavity from the cabinet body to take out the server in the server drawer cabinet for maintenance; Step 2: Push the server drawer cabinet back into the server placement cavity to form a closed cavity, use the coolant delivery device to deliver the coolant in the reserved cavity back into the closed cavity, and the isolation device cancels the isolation of the server placement cavity where the server to be maintained is located; Step 3: Repeat step 1 to pull out the server drawer cabinet in the closed cavity from the cabinet body, and put the server that has been maintained into the server drawer cabinet; Step 4: Push the server drawer cabinet back into the server placement cavity to form a closed cavity, use the coolant delivery device to deliver the coolant in the reserved cavity back into the closed cavity, and the isolation device cancels the isolation of the server placement cavity where the server to be maintained is located.

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