A Flow Equalization Method for a Liquid Cooling System

Abstract

The present invention discloses a flow balancing method for a liquid cooling system. The present invention obtains a first flow resistance of each first pipeline of an actually operating liquid cooling system, obtains a second flow resistance of each first pipeline of the liquid cooling system when the flow rates of each first pipeline are the same, and determines an initial flow resistance value of a first flow blocker based on the difference between the first flow resistance and the second flow resistance, so that the flow resistance of each first pipeline tends to be consistent before the heating groups are connected in parallel. Since the flow resistance of the heating groups is basically consistent, the flow resistance of each first pipeline also tends to be consistent, and the flow rate of each first pipeline is basically close to the first flow value, thereby achieving flow balancing for each heating group. The entire solution is simple, easy to implement, convenient to operate, and low in cost.

Description

Technical Field

[0001] The present invention relates to the field of liquid cooling technology, and in particular to a flow equalization method for a liquid cooling system. Background Art

[0002] The temperature difference of the electrical heating group has a significant impact on it. In the prior art, the electrical heating group is cooled by liquid cooling. In this liquid cooling heat dissipation method, the flow rate of the coolant flowing through each electrical heating group is different, and the flow resistance flowing through each electrical heating group is also different, resulting in large differences in the flow rate of each electrical heating group and large differences in heat dissipation efficiency. Among them, the electrical heating group with large flow resistance (long pipeline path and small pipe diameter) has a small flow rate and low heat dissipation efficiency, while the electrical heating group with small flow resistance has a large flow rate and high heat dissipation efficiency. Therefore, ensuring that the flow rate of each electrical heating group is basically consistent has a crucial impact on the life of the electrical heating group. The existing method to ensure the consistency of the flow rate of each pipeline is to adopt a pipeline co-flow design method. For example, in patent CN114927794A, in order to balance the flow of the electrical modules, the liquid flow length of all electrical modules is equal. However, this method results in a long overall pipeline and a large system flow resistance. The chiller pump often has difficulty matching the system flow resistance, or the pump head margin is small, resulting in an inability to meet the aging requirements within the life cycle, which is costly. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and provide a flow equalization method for a liquid cooling system, which can achieve basic flow equalization of each heating group and has low cost.

[0004] To achieve the above objectives, the present invention and its related embodiments adopt the following technical solutions but are not limited to the following solutions:

[0005] The first technical solution and its related embodiments relate to a flow equalization method for a liquid cooling system, wherein the liquid cooling system includes a cooling liquid circulation supply device, a liquid supply main pipe, a liquid collecting main pipe and several heating groups, the cooling liquid circulation supply device is provided with a liquid supply port and a liquid return port, each heating group has a cooling liquid flow channel and is provided with a liquid inlet end and a liquid outlet end, the liquid supply main pipe and the liquid collecting main pipe are respectively connected to the liquid supply port and the liquid return port, the liquid supply main pipe is provided with a first connection port corresponding to each heating group, the liquid collecting main pipe is provided with a second connection port corresponding to each heating group, the liquid inlet end of each heating group is suitable for being connected in parallel to the liquid supply main pipe through the corresponding first connection port, and the liquid outlet end of each heating group is suitable for being connected in parallel to the liquid collecting main pipe through the corresponding second connection port ; The flow equalization method includes: defining the pipeline where the liquid inlet and liquid outlet of each heating group are located as the first pipeline; obtaining the first flow resistance of each first pipeline when the power of the coolant circulation supply device in the actual operating liquid cooling system is the first power value; obtaining the second flow resistance of each first pipeline when the liquid cooling system meets the first condition, the first condition is that the power of the coolant circulation supply device is the first power value and the flow rate of each first pipeline is the same, and defining the flow rate of the first pipeline under the first condition as the first flow value; setting a first flow blocker at the first connection port and / or the second connection port corresponding to each heating group, and the initial value of the flow resistance of the first flow blocker is the difference between the second flow resistance and the first flow resistance of the first pipeline.

[0006] The second technical solution is based on the first technical solution and is a preferred embodiment of the first technical solution, which also includes the following steps: obtaining the third flow resistance of each heating group when the liquid cooling system meets the first condition; connecting the first flow meter in series between the first connection port and the second connection port corresponding to each heating group, and making the flow resistance of the first flow meter the third flow resistance; selecting the first flow meter with the largest difference between the two detection values of each first flow meter, and defining the first flow meter as the first flow detector, and adjusting the flow resistance values of the first flow blocking components corresponding to the two first flow detectors until the absolute value of the difference between the detection value of each first flow meter and the first flow value is less than the first set value.

[0007] The third technical solution is based on the second technical solution and is a preferred embodiment of the second technical solution, wherein each heating group includes several heating modules, a liquid supply branch and a liquid collecting branch, each heating module has a cooling liquid flow channel and is provided with a liquid inlet and a liquid outlet, each liquid supply branch extends in a vertical direction and is suitable for passing through a corresponding first connection port and being connected to the liquid supply main pipe, each collecting branch extends in a vertical direction and is suitable for passing through a corresponding second connection port and being connected to the collecting main pipe; in each heating group, the liquid supply branch is provided with a third connection port corresponding to each heating module, and the collecting branch is provided with a fourth connection port corresponding to each heating module; the liquid inlet of each heating module is connected in parallel to the liquid supply branch through the corresponding third connection port, and the liquid outlet of each heating module is connected in parallel to the collecting branch through the corresponding fourth connection port; the flow equalization method includes: defining the pipeline where the liquid inlet and liquid outlet of each heating module are located as the second pipe circuit; obtain the fourth flow resistance of each second pipeline when the power of the coolant circulation supply device in the actual operation of the liquid cooling system is the first power value; obtain the fifth flow resistance of each second pipeline when the liquid cooling system meets the second condition; the second condition is that the power of the coolant circulation supply device is the first power value, the flow rate of each first pipeline is the same, and the flow rate of each second pipeline is the same, and the liquid cooling system is defined as the flow rate of the first pipeline being the first flow value and the flow rate of the second pipeline being the second flow value when the second condition is met; after the absolute value of the difference between the detection value of each first flow meter and the first flow value is less than the first set value, one of the first flow meters is replaced with a heating group, and the heating group is defined as a first heating group; in the heating group, a second obstruction member is set at the third connection port and / or the fourth connection port corresponding to each heating module, and the initial value of the flow resistance of the second obstruction member is the difference between the fifth flow resistance and the fourth flow resistance of the second pipeline.

[0008] The fourth technical solution is based on the third technical solution and is a preferred embodiment of the third technical solution, wherein the flow equalization method also includes: obtaining the sixth flow resistance of each heating module when the liquid cooling system meets the second condition; connecting a second flow meter in series between the third connection port and the fourth connection port corresponding to each heating module, and making the flow resistance of the second flow meter the sixth flow resistance; selecting the second flow meter with the largest difference between the two detection values of each second flow meter, and defining the second flow meter as the second flow detector, and adjusting the flow resistance values of the second flow obstructions corresponding to the two second flow detectors until the absolute value of the difference between the detection value of each second flow meter and the second flow value is less than the second set value.

[0009] The fifth technical solution is based on the fourth technical solution and is a preferred embodiment of the fourth technical solution, wherein the first flow resistance and the fourth flow resistance are obtained once through a first simulation experiment, and the first simulation experiment simulates an actually operating liquid cooling system; the second flow resistance, the third flow resistance, the fifth flow resistance and the sixth flow resistance are obtained once through a second simulation experiment, and the second simulation experiment simulates the liquid cooling system operating under second conditions.

[0010] The sixth technical solution is based on the fourth technical solution and is a preferred embodiment of the fourth technical solution. The first flow resistance and the fourth flow resistance are respectively obtained through one or two first simulation experiments, the second flow resistance and the third flow resistance are respectively obtained through one or two second simulation experiments, and the fifth flow resistance and the sixth flow resistance are obtained through one or two third simulation experiments; the first simulation experiment simulates the actual operation of the liquid cooling system; the second simulation experiment simulates the operation of the liquid cooling system under the first conditions; and the third simulation experiment simulates the operation of the liquid cooling system under the second conditions.

[0011] The seventh technical solution is based on the fifth or sixth technical solution and is a preferred embodiment of the fifth or sixth technical solution, wherein, after the absolute value of the difference between the detection value of each second flow meter and the second flow value is less than the second set value, the flow resistance of the second flow blockers in the remaining heating groups is adjusted to be consistent with that in the first heating group; after the second flow blockers in each heating group are consistent, the remaining first flow meters are replaced with heating groups, and each second flow meter is replaced with a heating module.

[0012] The eighth technical solution is based on the seventh technical solution and is a preferred embodiment of the seventh technical solution, wherein the liquid supply main pipe is provided with a first connector corresponding to each heating group, the liquid collecting main pipe is provided with a second connector corresponding to each heating group, the liquid supply branch pipe is provided with a third connector corresponding to each heating module, and the liquid collecting branch pipe is provided with a fourth connector corresponding to each heating module; the first connection port, the second connection port, the third connection port and the fourth connection port are respectively formed on the first connection port, the second connection port, the third connection port and the fourth connection port; the flow equalization method also includes: connecting the first flow detector with the largest difference between the two detection values to the corresponding The first connector is replaced by the first choke joint and / or the second connector is replaced by the second choke joint; the third connector corresponding to the second flow detector with the largest difference between the two detection values is replaced by the third choke joint and / or the fourth connector is replaced by the fourth choke joint; wherein, the flow resistance of the first choke joint is the sum of the flow resistance of the first connector and the first choke member therein; the flow resistance of the second choke joint is the sum of the flow resistance of the second connector and the first choke member therein; the flow resistance of the third choke joint is the sum of the flow resistance of the third connector and the second choke member therein; and the flow resistance of the fourth choke joint is the sum of the flow resistance of the fourth connector and the second choke member therein.

[0013] The ninth technical solution is based on the seventh technical solution and is a preferred embodiment of the seventh technical solution, wherein when a heating group needs maintenance or is no longer needed, the heating group is replaced with a short pipe with a flow resistance value of the third flow resistance.

[0014] The tenth technical solution is based on the third technical solution and is a preferred embodiment of the third technical solution, wherein each heating module includes a heating module, a liquid inlet branch and a liquid outlet branch, each heating module has a cooling flow channel and is provided with a liquid inlet end and a liquid outlet end respectively connected to the liquid inlet branch and the liquid outlet branch, and the liquid inlet branch and the liquid outlet branch are both provided with a check valve, each liquid inlet branch is connected in parallel to the liquid supply branch through a corresponding third connection port, and each liquid outlet branch is connected in parallel to the liquid collecting branch through a corresponding fourth connection port; each liquid inlet branch and each liquid outlet branch is provided with a check valve; when the heating module needs maintenance, the check valve of the liquid inlet branch and the liquid outlet branch corresponding to the heating module is closed.

[0015] From the above description of the present invention and its specific embodiments, it can be seen that compared with the prior art, the technical solution of the present invention and its related embodiments have the following beneficial effects due to the adoption of the following technical means:

[0016] In the first technical solution and related embodiments, the first flow resistance of each first pipeline of the actual operating liquid cooling system is obtained, and the second flow resistance of each first pipeline of the liquid cooling system when the flow rate of each first pipeline is the same is obtained. Before the heating group is connected to the liquid supply main pipe and the liquid collecting main pipe, a first flow blocker is first set at the first connection port and / or the second connection port corresponding to each heating group, and the initial value of the flow resistance of the first flow blocker is set to the difference between the second flow resistance and the first flow resistance of the first pipeline, so that the flow resistance of each first pipeline tends to be consistent before the heating groups are connected. Since the flow resistance of the heating groups is basically consistent, the flow resistance of each first pipeline also tends to be consistent, and the flow rate of each first pipeline is basically close to the first flow value, thereby achieving equal flow of each heating group. The entire solution is simple, easy to implement, and convenient to operate. Compared with the prior art that ensures flow consistency by setting the same process, this solution only needs to set the first flow blocker of the corresponding flow resistance value, which is lower in cost.

[0017] In the second technical solution and related embodiments, in actual applications, the flow resistance of each first pipeline will still deviate from the first flow resistance. This solution obtains the third flow resistance of each heating group, and then connects the first flow meter in series between the first connection port and the second connection port corresponding to each heating group and makes the flow resistance of the first flow meter the third flow resistance, thereby making the flow resistance of each first pipeline close to the first flow resistance. This technical solution adjusts the flow resistance of the first flow blocker according to the flow value detected by the first flow meter, but since the flow resistance of each first pipeline is already close to the first flow resistance before the first flow meter is adjusted, the adjustment of the first flow meter is only a fine-tuning at this time, so when adjusting a certain first pipeline, it is not necessary to adjust it. The flow resistance of his first pipeline has little effect, and in this solution, the adjustment of the first flow meters is not all adjustments, but the first flow meter with the largest difference between the two detection values among the first flow meters is selected, and the first flow meter is defined as the first flow detector, and the two first flow detectors are adjusted separately. This is because when multiple heating groups are connected in parallel, the flow of other heating groups can be adjusted by adjusting the heating group with the largest flow and the heating group with the smallest flow. Therefore, only a small number of adjustments are needed to achieve that the absolute value of the difference between the detection value of each first flow meter and the first flow value is less than the first set value, that is, the flow of each heating group is basically consistent.

[0018] In the third technical solution and related embodiments, the flow equalization of the second pipelines of each heating module is also described, wherein the flow equalization method of each second pipeline is basically consistent with the idea of the first technical solution, and therefore has the same technical effect as the first and second technical solutions. Therefore, on the basis of the first and second technical solutions, the third technical solution first equalizes the flow of the heating group. After the flow of the heating group is equalized, the flow of each heating module in the heating group is equalized by setting a second flow blocking member. Therefore, the third technical solution also realizes the basic flow equalization of each second pipeline, that is, realizes the flow equalization of each heating module.

[0019] In the fourth technical solution and related embodiments, the adjustment of the flow resistance value of the second flow blocking member of the second pipeline of each heating module is basically consistent with the second technical solution, and thus has basically the same technical advantages as the second technical solution.

[0020] In the fifth technical solution of this solution and related embodiments, the first flow resistance and the fourth flow resistance are obtained in the first simulation experiment, and the second flow resistance, the third flow resistance, the fifth flow resistance and the sixth flow resistance are obtained once through the second simulation experiment, which is more efficient.

[0021] In the sixth technical solution and related embodiments, the first flow resistance and the fourth flow resistance are respectively obtained through one or two first simulation experiments, the second flow resistance and the third flow resistance are respectively obtained through one or two second simulation experiments, and the fifth flow resistance and the sixth flow resistance are obtained through one or two third simulation experiments, so that the simulation experiments obtain data as needed.

[0022] In the seventh technical solution and related embodiments, after the absolute value of the difference between the detection value of each second flow meter and the second flow value is less than the second set value, the flow resistance of the second flow blocking members in the remaining heating groups is adjusted to be consistent with that in the first heating group. That is to say, after the flow of each heating group is basically consistent, since the structure of each heating group is the same, the flow resistance value of the second flow blocking members of the remaining heating groups is adjusted according to the first heating group to achieve uniform flow of the entire liquid cooling system, and the flow of each heating module is basically balanced, and the adjustment process is simple; after the adjustment is completed, the remaining first flow meters are replaced with heating groups, and the second flow meters are replaced with heating modules. Compared with connecting the heating groups in parallel before adjustment, the impact on the heating modules during the adjustment process is avoided.

[0023] In the eighth technical solution and related embodiments, the first connector corresponding to the first flow detector with the largest difference between the two detection values is replaced by the first choke joint and / or the second connector is replaced by the second choke joint; the third connector corresponding to the second flow detector with the largest difference between the two detection values is replaced by the third choke joint and / or the fourth connector is replaced by the fourth choke joint, thereby avoiding the impact of the falling off of the first choke or the second choke on the flow of the heating module and ensuring that the flow of each first pipeline and each second pipeline remains basically consistent.

[0024] In the ninth technical solution and related embodiments, for a heating group that needs maintenance or does not need to be used, the heating group is replaced with a short pipe with a flow resistance value of the third flow resistance, thereby avoiding the impact on the flow of other heating groups. This ensures that the flow of the remaining heating groups is balanced without changing the power of the coolant circulation device, and also allows the number of heating groups to be set as needed, making it more flexible to use.

[0025] In the tenth technical solution and related embodiments, when the heating module needs maintenance, the check valves of the liquid inlet branch and the liquid outlet branch corresponding to the heating module are closed, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are 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.

[0027] Figure 1 Schematic diagram of a liquid cooling system according to embodiment 1 of the present invention;

[0028] Figure 2 This is a schematic diagram of a liquid cooling system according to embodiment 1 of the present invention, in which all heat-generating modules are hidden;

[0029] Figure 3 Schematic diagram of a first connector according to a first embodiment of the present invention;

[0030] Figure 4 Schematic diagram of a liquid supply branch pipe according to a first embodiment of the present invention;

[0031] Figure 5 Schematic diagram of a first spoiler according to a first embodiment of the present invention;

[0032] Figure 6 Schematic diagram of a short pipe according to an embodiment of the present invention.

[0033] Description of main reference numerals:

[0034] Cooling liquid circulation supply device 10; liquid supply port 11; liquid return port 12; liquid supply main pipe 20; first connector 21; first liquid discharge port 211; first switch valve 212; liquid collecting main pipe 30; heating group 100; liquid supply branch pipe 40; third connector 41; liquid collecting branch pipe 50; heating module 60; heating module 61; liquid inlet branch pipe 62; liquid outlet branch pipe 63; first flow blocking member 70; short pipe 80. DETAILED DESCRIPTION

[0035] 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 preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] In the claims, description and drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is for the purpose of distinguishing different objects rather than for describing a specific order.

[0037] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words such as the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention.

[0038] In the claims, description and above-mentioned drawings of the present invention, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be understood in a broad sense, that is, any connection method without displacement relationship and relative rotation relationship between the two parties, that is, including non-detachable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or elements.

[0039] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0040] Example 1

[0041] See also Figure 1-2 , Figure 1-2 The liquid cooling system is shown, which includes a cooling liquid circulation supply device 10, a liquid supply main pipe 20, a liquid collecting main pipe 30 and a plurality of heating groups 100. Each heating group 100 has a cooling liquid flow channel and is provided with a liquid inlet end and a liquid outlet end.

[0042] The cooling liquid circulation supply device 10 is provided with a liquid supply port 11 and a liquid return port 12. In this embodiment, the cooling liquid circulation supply device is located on one side of each heating group 100. The cooling liquid circulation supply device 10 is generally provided with a driving device such as a circulation pump to drive the flow of the cooling liquid. This part belongs to the existing technology and will not be described in detail in this embodiment.

[0043] The liquid supply main pipe 20 and the liquid collecting main pipe 30 are connected to the liquid supply port 11 and the liquid return port 12 respectively. The liquid supply main pipe 20 is provided with a first connection port corresponding to each heating group 100, and the liquid collecting main pipe 30 is provided with a second connection port corresponding to each heating group 100. The liquid inlet end of each heating group 100 is suitable for being connected in parallel to the liquid supply main pipe 20 through the corresponding first connection port, and the liquid outlet end of each heating group 100 is suitable for being connected in parallel to the liquid collecting main pipe 30 through the corresponding second connection port; in this embodiment, the liquid supply main pipe 20 is provided with a first connector 21 corresponding to each heating group 100, and the liquid collecting main pipe 30 is provided with a second connector corresponding to each heating group 100, and the first connection port and the second connection port are respectively formed on the first connector 21 and the second connector.

[0044] Each heating group 100 includes a plurality of heating modules 60, a liquid supply branch pipe 40 and a liquid collecting branch pipe 50. Each heating module 60 has a cooling liquid flow channel and is provided with a liquid inlet end and a liquid outlet end. Each liquid supply branch pipe 40 extends in a vertical direction and is suitable for passing through a corresponding first connection port and being connected to the liquid supply main pipe 20. Each liquid collecting branch pipe 50 extends in a vertical direction and is suitable for passing through a corresponding second connection port and being connected to the liquid collecting main pipe 30. In each heating group 100, the liquid supply branch pipe 40 is provided with a third connection port corresponding to each heating module 60, and the collecting branch pipe 50 is provided with a third connection port corresponding to each heating module 60. The liquid branch pipe 50 is provided with a fourth connection port corresponding to each heating module 60; the liquid inlet end of each heating module 60 is connected in parallel to the liquid supply branch pipe 40 through the corresponding third connection port, and the liquid outlet end of each heating module 60 is connected in parallel to the liquid collecting branch pipe 50 through the corresponding fourth connection port; in this embodiment, the liquid supply branch pipe 40 is provided with a third connector 41 corresponding to each heating module 60, and the liquid collecting branch pipe 50 is provided with a fourth connector corresponding to each heating module 60; the third connection port and the fourth connection port are respectively formed on the third connector 41 and the fourth connector.

[0045] Each heating module 60 includes a heating module 61, a liquid inlet branch 62 and a liquid outlet branch 63. Each heating module 60 has a cooling channel and is provided with a liquid inlet end and a liquid outlet end respectively connected to the liquid inlet branch 62 and the liquid outlet branch 63. Each liquid inlet branch 62 is connected in parallel to the liquid supply branch 40 through the corresponding third connection port, and each liquid outlet branch 63 is connected in parallel to the liquid collecting branch 50 through the corresponding fourth connection port.

[0046] In this embodiment, the heating groups 100 form two heating rows along the front-to-back direction, each heating row including several heating groups 100. Accordingly, the liquid supply main pipe 20 and the liquid collection main pipe 30 are also generally U-shaped and are both located at the bottom of each heating group 100. The liquid supply branch pipe 40 and the liquid collection branch pipe 50 both extend vertically, while the liquid inlet branch pipe 62 and the liquid outlet branch pipe 63 extend generally horizontally. In each heating group 100, the liquid supply branch pipe 40 and the liquid collection branch pipe 50 are each provided on one side of each heating module 60.

[0047] The first connector 21, the second connector, the third connector 41 and the fourth connector are all three-way connectors, thereby realizing parallel connection of pipelines. Figure 3 The first connector 21 is provided with a first liquid discharge port 211 and a first switch valve 212 , and the second connector (not shown in the figure) is provided with a second liquid discharge port and a second switch valve. The structure of the second connector is consistent with that of the first connector 21 .

[0048] From the above structural description of the liquid cooling system, it can be seen that since the flow resistance of each branch is inconsistent, the flow rate of each branch is also the same. Therefore, there is a temperature uniformity problem in each heating module. The pipeline where the liquid inlet and liquid outlet of each heating group 100 are located is defined as the first pipeline; the pipeline where the liquid inlet and liquid outlet of each heating module 60 are located is defined as the second pipeline.

[0049] The flow balancing method for the liquid cooling system in this embodiment includes the following steps:

[0050] Step 1: Obtain flow resistance

[0051] Obtaining a first flow resistance of each first pipeline and a fourth flow resistance of each second pipeline when the power of the coolant circulation supply device 10 in the actually operating liquid cooling system is a first power value; obtaining a second flow resistance of each first pipeline when the liquid cooling system meets a first condition; obtaining a fifth flow resistance of each second pipeline and a sixth flow resistance of each heating module 60 when the liquid cooling system meets a second condition;

[0052] Among them, the first condition is that the power of the coolant circulation supply device 10 is the first power value and the flow rate of each first pipeline is the same, and the flow rate of the first pipeline under the first condition is defined as the first flow rate value; the second condition is that the power of the coolant circulation supply device 10 is the first power value, the flow rate of each first pipeline is the same, and the flow rate of each second pipeline is the same, and the flow rate of the first pipeline is defined as the first flow rate value and the flow rate of the second pipeline is the second flow rate value when the liquid cooling system meets the second condition; therefore, when the liquid cooling system meets the second condition, it must also meet the first condition.

[0053] In this embodiment, a first simulation experiment is performed to simulate an actually operating liquid cooling system, and a first flow resistance of each first pipeline and a fourth flow resistance of each second pipeline in the liquid cooling system are obtained. The power of the coolant circulation supply device 10 in the actually operating liquid cooling system is a first power value.

[0054] The second simulation experiment simulates the second flow resistance of each first pipeline, the third flow resistance of each heating group 100, the fifth flow resistance of each second pipeline, and the sixth flow resistance of each heating module 60 when the liquid cooling system meets the second condition;

[0055] It should be understood that in practical applications, the first flow resistance, the second flow resistance, the third flow resistance, the fourth flow resistance, the fifth flow resistance and the sixth flow resistance may also be obtained by other means.

[0056] Step 2: Achieve flow resistance balance in each first pipeline

[0057] A first flow blocker 70 is provided at the first connection port corresponding to each heating group 100, that is, a first flow blocker 70 is provided in the first connector 21. The initial value of the flow resistance of the first flow blocker 70 is the difference between the first flow resistance and the second flow resistance of the first pipeline. The first flow blocker 70 is a flow blocker ring in actual application. Figure 5 By changing the water flow area of the flow blocker ring, the flow resistance value can be adjusted. Of course, in other embodiments, the first flow blocker 70 can also have other structures. It should be understood that the first flow blocker 70 can also be installed at the second connection port, or at both the first connection port and the second connection port.

[0058] A first flow meter is connected in series between the first connection port and the second connection port corresponding to each heating group 100, and the flow resistance of the first flow meter is set to the third flow resistance; wherein the first flow meter is a turbine flow meter;

[0059] The first flow meter with the largest difference between the two detection values of each first flow meter in each heating row is selected, and the first flow meter is defined as the first flow detector. The flow resistance values of the first flow blocking member 70 corresponding to the two first flow detectors are adjusted respectively until the absolute value of the difference between the detection value of each first flow meter and the first flow value is less than the first set value.

[0060] In actual operation, the flow resistance value of the first flow blocker 70 is adjusted mainly by replacing the first flow blocker 70 with a different resistance value. During replacement, the coolant in each first pipeline is discharged, the old first flow blocker 70 is removed and a new first flow blocker 70 is inserted.

[0061] In this step, before the heating group 100 is connected to the liquid supply main pipe 20 and the liquid collecting main pipe 30, a first flow blocker 70 is first set at the first connection port corresponding to each heating group 100, and the initial value of the flow resistance of the first flow blocker 70 is the difference between the first flow resistance and the second flow resistance of the first pipeline, and then the first flow meter is connected in series between the first connection port and the second connection port corresponding to each heating group 100 and the flow resistance of the first flow meter is set to the third flow resistance, so that the flow resistance of each first pipeline is close to the first flow resistance. However, in actual applications, the flow resistance of each first pipeline will still deviate from the first flow resistance. Therefore, in this embodiment, the flow value detected by the first flow meter is not consistent with the flow of the first flow blocker 70. The resistance is adjusted, but since the flow resistance of each first pipeline is already close to the first flow resistance before the first flow meter is adjusted, the adjustment of the first flow meter is only a fine-tuning at this time. Therefore, when adjusting a certain first pipeline, the flow resistance of other first pipelines is less affected. In this scheme, the adjustment of the first flow meter is not all adjustments, but the first flow meter with the largest difference between the two detection values of each first flow meter is selected, and the first flow meter is defined as the first flow detector, and the two first flow detectors are adjusted separately. This is because when multiple heating groups 100 are connected in parallel, the flow of other heating groups 100 can be adjusted by adjusting the heating group 100 with the largest flow and the heating group 100 with the smallest flow.

[0062] Step 3: Achieve flow resistance balance in each second pipeline

[0063] After the absolute value of the difference between the detection value of each first flow meter and the first flow value is less than the first set value, one of the first flow meters is replaced with the heating group 100, and the heating group 100 is defined as the first heating group 100;

[0064] In the heating group 100, a second flow blocker is provided at the third connection port corresponding to each heating module 60. The initial flow resistance of the second flow blocker is the difference between the fourth and fifth flow resistances of the second pipeline. The structure of the second flow blocker is substantially the same as that of the first flow blocker 70, except that the outer diameter is smaller. Of course, in other embodiments, the second flow blocker may also have other structures. It should be understood that the second flow blocker may also be provided at the fourth connection port, or at both the third and fourth connection ports.

[0065] Connecting a second flow meter in series between the third connection port and the fourth connection port corresponding to each heating module 60, and setting the flow resistance of the second flow meter to the sixth flow resistance;

[0066] Select the second flow meter with the largest difference between the two detection values among each second flow meter, and define the second flow meter as the second flow detector, and adjust the flow resistance values of the second flow blocking members corresponding to the two second flow detectors respectively until the absolute value of the difference between the detection value of each second flow meter and the second flow value is less than the second set value.

[0067] After the absolute value of the difference between the detection value of each second flow meter and the second flow value is less than the second set value, the flow resistance of the second flow blocking members in the remaining heating groups 100 is adjusted to be consistent with that in the first heating group 100 .

[0068] The flow equalization method of each second pipeline is basically the same as the idea of the first pipeline. Therefore, based on step 3, after the heating group 100 has completed the flow equalization, the heating modules 60 in the heating group 100 are subjected to flow equalization, thereby also achieving basic flow equalization of each second pipeline, that is, achieving flow equalization of each heating module 60.

[0069] Step 4: Replace the connector

[0070] The first connector 21 corresponding to the first flow detector with the largest difference between the two detection values is replaced with the first flow blocking joint. When other first flow blocking components are installed on the second connector or when the first connector and the second connector are both equipped with first flow blocking components, the second connector is also replaced with the second flow blocking joint.

[0071] The third connector 41 corresponding to the second flow detector with the largest difference between the two detection values is replaced with the third flow blocking joint. When the other second flow blocking components are installed on the fourth connector or when the third connector and the fourth connector are both equipped with second flow blocking components, the fourth connector is also replaced with the fourth flow blocking joint.

[0072] The flow resistance of the first flow blocking joint is the sum of the flow resistances of the first connector 21 and the first flow blocking member 70 therein;

[0073] The flow resistance of the second flow blocking joint is the sum of the flow resistance of the second connector and the first flow blocking member 70 therein;

[0074] The flow resistance of the third flow blocking joint is the sum of the flow resistance of the third connector 41 and the second flow blocking member therein;

[0075] The flow resistance of the fourth choke joint is the sum of the flow resistances of the fourth connector and the second choke member therein.

[0076] Step 5: Assemble the heating module 60

[0077] After the second flow-blocking parts in each heating group 100 are consistent, the consistency here mainly refers to the consistency of the flow resistance of the second flow-blocking parts corresponding to the positions of each heating group 100. The remaining first flow meters are replaced with the heating group 100, and the second flow meters are replaced with the heating module 60.

[0078] In this embodiment, only a few adjustments are needed to achieve that the absolute value of the difference between the detection value of each first flow meter and the first flow value is less than the first set value, that is, the flow of each heating group 100 is basically consistent. After the flow of each heating group 100 is basically consistent, since the structure of each heating group 100 is the same, the flow resistance value of the second flow blocking member of the remaining heating group 100 is adjusted according to the first heating group 100 to achieve uniform flow of the entire liquid cooling system, and the flow of each heating module 60 is basically balanced, and the adjustment process is simple; after the adjustment is completed, the remaining first flow meters are replaced with the heating group 100, and the second flow meters are replaced with the heating module 60. Compared with the heating groups 100 being connected in parallel before the adjustment, the influence on the heating module 60 during the adjustment process is avoided.

[0079] In this embodiment, the first connector 21 corresponding to the first flow detector with the largest difference between the two detection values is replaced by the first choke joint and / or the second connector is replaced by the second choke joint; the third connector 41 corresponding to the second flow detector with the largest difference between the two detection values is replaced by the third choke joint and / or the fourth connector is replaced by the fourth choke joint, thereby avoiding the impact of the falling off of the first choke 70 or the second choke on the flow of the heating module 60, and ensuring that the flow of each first pipeline and each second pipeline remains basically consistent.

[0080] In actual use, there are cases where the heating group 100 needs maintenance or is not in use. Since the power of the coolant circulation supply device 10 is constant, if the heating group 100 is directly removed and the first switch valve 212 and the second switch valve are closed, it will affect the pipelines in the entire liquid cooling system, causing the heating groups 100 to fall into inconsistent flow again. In order to avoid this situation, the current balancing method for this situation in this embodiment is as follows:

[0081] When a heating group 100 needs maintenance or is no longer in use, the heating group 100 is replaced with a short pipe 80 having a flow resistance value of the third flow resistance. Specifically, when a heating group 100 needs maintenance or is no longer in use, the first switch valve 212 of the first connector 21 and the second switch valve of the second connector corresponding to the heating group 100 are closed; the coolant of the heating group 100 is discharged through the first drain port 211 and / or the second drain port; the short pipe 80 is connected in series between the first connector 21 and the second connector, and after the short pipe 80 is vacuumed, the coolant is injected into the short pipe 80 through the first drain port 211 or the second drain port, and then the first switch valve (212) and the second switch valve are opened. When the maintenance of the heating group 100 is completed, the first switch valve 212 of the first connector 21 and the second switch valve of the second connector corresponding to the short pipe 80 are closed; the coolant of the short pipe 80 is discharged through the first drain port 211 and / or the second drain port; the liquid supply branch pipe 40 and the liquid collecting branch pipe 50 of the heating group 100 are connected to the first connector 21 and the second connector respectively, the pipes of the heating group 100 are vacuumed, and the coolant is injected into the heating group 100 through the first drain port 211 or the second drain port, and then the first switch valve (212) and the second switch valve are opened.

[0082] When a heating module 61 needs maintenance, a check valve is provided on each liquid inlet branch 62 and each liquid outlet branch 63; when a heating module 61 needs maintenance, the check valves of the liquid inlet branch 62 and the liquid outlet branch 63 corresponding to the heating module 61 are closed.

[0083] In this embodiment, for a heating group 100 that needs maintenance or does not need to be used, the heating group 100 is replaced with a short pipe 80 with a flow resistance value of the third flow resistance, thereby avoiding the influence on the flow of other heating groups 100, so that the flow of the remaining heating groups 100 can be balanced without changing the power of the coolant circulation device, and the number of heating groups 100 can be set as needed, making it more flexible to use. Among them, it is convenient to replace the heating group 100 with a short pipe 80, and it is convenient to connect the first connector 21 and the second connector corresponding to the short pipe 80 to the heating group 100. The heating module 61 is easy to maintain.

[0084] Example 2

[0085] The flow equalization method of the liquid cooling system of Example 2 is basically the same as that of Example 1, except that the first flow resistance and the fourth flow resistance are obtained through one or two first simulation experiments, respectively, the second flow resistance and the third flow resistance are obtained through one or two second simulation experiments, and the fifth flow resistance and the sixth flow resistance are obtained through one or two third simulation experiments; the first simulation experiment simulates the actual operation of the liquid cooling system; the second simulation experiment simulates the operation of the liquid cooling system under the first condition; and the third simulation experiment simulates the operation of the liquid cooling system under the second condition. The first condition is that the power of the coolant circulation supply device 10 is the first power value and the flow rates of each first pipeline are the same. The flow rate of the first pipeline under the first condition is defined as the first flow rate value; the second condition is that the power of the coolant circulation supply device 10 is the first power value, the flow rates of each first pipeline are the same, and the flow rates of each second pipeline are the same. When the liquid cooling system meets the second condition, the flow rate of the first pipeline is defined as the first flow rate value, and the flow rate of the second pipeline is defined as the second flow rate value.

[0086] Therefore, the simulation experiment in this embodiment obtains data as needed.

[0087] The above description and embodiments are intended to explain the scope of protection of the present invention, but do not constitute a limitation thereto. Modifications, equivalent substitutions, or other improvements to the embodiments of the present invention or portions thereof that can be obtained by a person of ordinary skill in the art through logical analysis, reasoning, or limited experimentation based on the teachings of the present invention or the above embodiments, combined with common knowledge, ordinary technical knowledge in the field, and / or prior art, should all be included within the scope of protection of the present invention.

Claims

1. A flow equalization method for a liquid cooling system, wherein the liquid cooling system comprises a cooling liquid circulation supply device (10), a liquid supply main pipe (20), a liquid collecting main pipe (30) and a plurality of heating groups (100), wherein the cooling liquid circulation supply device (10) is provided with a liquid supply port (11) and a liquid return port (12), wherein the liquid supply main pipe (20) and the liquid collecting main pipe (30) are respectively connected to the liquid supply port (11) and the liquid return port (12), and each heating group (100) has a cooling liquid flow channel. A liquid inlet and a liquid outlet are provided, the liquid supply main pipe (20) is provided with a first connection port corresponding to each heating group (100), the liquid collecting main pipe (30) is provided with a second connection port corresponding to each heating group (100), the liquid inlet of each heating group (100) is suitable for being connected in parallel to the liquid supply main pipe (20) through the corresponding first connection port, and the liquid outlet of each heating group (100) is suitable for being connected in parallel to the liquid collecting main pipe (30) through the corresponding second connection port; and the invention is characterized in that: The flow equalization method comprises: defining the pipeline where the liquid inlet and liquid outlet of each heating group (100) are located as a first pipeline; Obtaining a first flow resistance of each first pipeline when the power of a coolant circulation supply device (10) in an actually operating liquid cooling system is a first power value; Obtaining a second flow resistance of each first pipeline when the liquid cooling system satisfies a first condition, wherein the first condition is that the power of the cooling liquid circulation supply device (10) is a first power value and the flow rates of each first pipeline are the same, and defining the flow rate of the first pipeline under the first condition as a first flow rate value; A first flow blocking member (70) is provided at the first connection port and / or the second connection port corresponding to each heating group (100). The initial value of the flow resistance of the first flow blocking member (70) is the difference between the second flow resistance and the first flow resistance of the first pipeline; The following steps are also included: Obtaining a third flow resistance of each heating group (100) when the liquid cooling system satisfies the first condition; A first flow meter is connected in series between a first connection port and a second connection port corresponding to each heating group (100), and the flow resistance of the first flow meter is set to a third flow resistance; A first flow meter with the largest difference between two detection values among the first flow meters is selected and defined as a first flow detector. The flow resistance values of the first flow blocking members (70) corresponding to the two first flow detectors are respectively adjusted until the absolute value of the difference between the detection value of each first flow meter and the first flow value is less than a first set value.

2. A flow equalization method for a liquid cooling system according to claim 1, characterized in that: Each heating group (100) comprises a plurality of heating modules (60), a liquid supply branch pipe (40) and a liquid collecting branch pipe (50), each heating module (60) having a cooling liquid flow channel and being provided with a liquid inlet end and a liquid outlet end, each liquid supply branch pipe (40) extending in a vertical direction and being adapted to be connected to the liquid supply main pipe (20) through a corresponding first connection port, each liquid collecting branch pipe (50) extending in a vertical direction and being adapted to be connected to the liquid collecting main pipe (30) through a corresponding second connection port; in each heating group (100), the liquid supply branch pipe (40) is provided with a third connection port corresponding to each heating module (60), and the liquid collecting branch pipe (50) is provided with a fourth connection port corresponding to each heating module (60); the liquid inlet end of each heating module (60) is connected in parallel to the liquid supply branch pipe (40) through the corresponding third connection port, and the liquid outlet end of each heating module (60) is connected in parallel to the liquid collecting branch pipe (50) through the corresponding fourth connection port; the flow equalization method comprises: The pipeline where the liquid inlet and the liquid outlet of each heating module (60) are located is defined as a second pipeline; Obtaining the fourth flow resistance of each second pipeline when the power of the coolant circulation supply device (10) in the actually operating liquid cooling system is a first power value; Obtaining the fifth flow resistance of each second pipeline when the liquid cooling system satisfies a second condition; the second condition is that the power of the cooling liquid circulation supply device (10) is a first power value, the flow rates of each first pipeline are the same, and the flow rates of each second pipeline are the same, and defining that when the liquid cooling system satisfies the second condition, the flow rate of the first pipeline is a first flow rate value, and the flow rate of the second pipeline is a second flow rate value; after the absolute value of the difference between the detection value of each first flow meter and the first flow value is less than a first set value, replacing one of the first flow meters with a heating group (100), and the heating group (100) is defined as a first heating group (100); A second flow blocker is provided at the third connection port and / or the fourth connection port corresponding to each heating module (60) in the heating group (100), and the initial value of the flow resistance of the second flow blocker is the difference between the fifth flow resistance and the fourth flow resistance of the second pipeline.

3. A flow equalization method for a liquid cooling system according to claim 2, characterized in that: The current sharing method further includes: Obtaining a sixth flow resistance of each heating module (60) when the liquid cooling system satisfies the second condition; A second flow meter is connected in series between the third connection port and the fourth connection port corresponding to each heating module (60), and the flow resistance of the second flow meter is set to the sixth flow resistance; Select the second flow meter with the largest difference between the two detection values among each second flow meter, and define the second flow meter as the second flow detector, and adjust the flow resistance values of the second flow blocking members corresponding to the two second flow detectors respectively until the absolute value of the difference between the detection value of each second flow meter and the second flow value is less than the second set value.

4. A flow equalization method for a liquid cooling system according to claim 3, characterized in that: The first flow resistance and the fourth flow resistance are obtained at once through a first simulation experiment, wherein the first simulation experiment simulates an actually operating liquid cooling system; The second flow resistance, the third flow resistance, the fifth flow resistance and the sixth flow resistance are obtained at once through a second simulation experiment, and the second simulation experiment simulates the liquid cooling system operating under a second condition.

5. The flow equalization method of a liquid cooling system according to claim 3, wherein: The first flow resistance and the fourth flow resistance are obtained through one or two first simulation experiments respectively, the second flow resistance and the third flow resistance are obtained through one or two second simulation experiments, and the fifth flow resistance and the sixth flow resistance are obtained through one or two third simulation experiments; the first simulation experiment simulates the actual operation of the liquid cooling system; the second simulation experiment simulates the liquid cooling system operating under the first conditions; and the third simulation experiment simulates the liquid cooling system operating under the second conditions.

6. A flow equalization method for a liquid cooling system according to claim 4 or 5, characterized in that: The flow balancing method further comprises: after the absolute value of the difference between the detection value of each second flow meter and the second flow value is less than a second set value, adjusting the flow resistance of the second flow blocking members in the remaining heating groups (100) to be consistent with that in the first heating group (100); After the second flow-blocking members in each heating group (100) are consistent, the remaining first flow meters are all replaced with the heating group (100), and the second flow meters are replaced with the heating modules (60).

7. A flow equalization method for a liquid cooling system according to claim 6, characterized in that: The liquid supply main pipe (20) is provided with a first connector (21) corresponding to each heating group (100), the liquid collecting main pipe (30) is provided with a second connector corresponding to each heating group (100), the liquid supply branch pipe (40) is provided with a third connector (41) corresponding to each heating module (60), and the liquid collecting branch pipe (50) is provided with a fourth connector corresponding to each heating module (60); a first connection port, a second connection port, a third connection port and a fourth connection port are respectively formed on the first connection port (21), the second connection port, the third connection port (41) and the fourth connection port; the flow equalization method further comprises: The first connector (21) corresponding to the first flow detector having the largest difference between the two detection values is replaced with a first flow blocking connector and / or the second connector is replaced with a second flow blocking connector; The third connector (41) corresponding to the second flow detector having the largest difference between the two detection values is replaced with a third flow blocking connector and / or the fourth connector is replaced with a fourth flow blocking connector; The flow resistance of the first flow-blocking joint is the sum of the flow resistances of the first connector (21) and the first flow-blocking member (70) therein; The flow resistance of the second flow blocking joint is the sum of the flow resistances of the second connector and the first flow blocking member (70) therein; The flow resistance of the third flow-blocking joint is the sum of the flow resistances of the third connector (41) and the second flow-blocking member therein; The flow resistance of the fourth choke joint is the sum of the flow resistances of the fourth connector and the second choke member therein.

8. The flow equalization method of a liquid cooling system according to claim 6, wherein: When a heating group (100) needs maintenance or is no longer in use, the heating group (100) is replaced with a short pipe (80) having a flow resistance value of the third flow resistance.

9. The flow equalization method of a liquid cooling system according to claim 2, wherein: Each heating module (60) comprises a heating module (61), a liquid inlet branch pipe (62) and a liquid outlet branch pipe (63); each heating module (60) has a cooling flow channel and is provided with a liquid inlet end and a liquid outlet end respectively connected to the liquid inlet branch pipe (62) and the liquid outlet branch pipe (63); each liquid inlet branch pipe (62) is connected in parallel to the liquid supply branch pipe (40) through a corresponding third connection port, and each liquid outlet branch pipe (63) is connected in parallel to the liquid collecting branch pipe (50) through a corresponding fourth connection port; each liquid inlet branch pipe (62) and each liquid outlet branch pipe (63) are provided with a check valve; when the heating module (61) needs maintenance, the check valves of the liquid inlet branch pipe (62) and the liquid outlet branch pipe (63) corresponding to the heating module (61) are closed.

Images