A liquid level control device and a liquid cooling cabinet

Abstract

This application discloses a liquid level control device and a liquid cooling cabinet for automatically adjusting the liquid level inside the liquid cooling cabinet to prevent the liquid level from being too high or too low. The liquid level control device is applied to a liquid cooling cabinet, which includes a cabinet body, a first inlet pipe connected to a liquid supply pipe, and a first outlet pipe connected to a return pipe. The device includes: a liquid level monitoring device installed inside the cabinet body, a control valve installed on at least one of the first inlet pipe and the first outlet pipe, and a controller. The controller is used to acquire liquid level detection data from the liquid level monitoring device and adjust the opening of the control valve according to the liquid level detection data.

Description

Technical Field

[0001] This application relates to the field of energy technology, and in particular to a liquid level control device and a liquid cooling cabinet. Background Technology

[0002] With the development of the internet industry, servers, as core equipment in data centers, are becoming increasingly powerful. Traditional air-cooling solutions are struggling to meet the heat dissipation needs of high-load servers. Furthermore, the requirements for power usage effectiveness (PUE) in data centers are becoming increasingly stringent. Therefore, server liquid cooling technology has become a hot research topic in the data center industry. Based on whether the heat source is in contact with the liquid, liquid cooling technology can be divided into direct and indirect methods. Currently, the most common direct liquid cooling technology on the market is immersion liquid-cooled server technology.

[0003] Immersion liquid cooling systems immerse servers in a cooling medium, which is circulated by pumps to meet the server's continuous heat dissipation needs. Immersion liquid cooling systems typically consist of Cooling Distribution Units (CDUs) and rack units. The system often uses a multi-unit configuration, where multiple racks are connected in parallel along the main supply and return lines, with the CDU supplying liquid to multiple racks.

[0004] The existing immersion liquid cooling system has the following problems in actual use: Since the cabinet is an open cavity and the inside of the cabinet is connected to atmospheric pressure, the liquid inlet flow rate of the cabinet may not be equal to the liquid return flow rate. When the liquid inlet flow rate of some cabinets is greater than the liquid outlet flow rate, the liquid level in these cabinets rises, and in severe cases, the coolant overflows. When the liquid inlet flow rate of some cabinets is less than the liquid outlet flow rate, the coolant level in these cabinets drops, and in severe cases, the liquid level is lower than the return port, resulting in no liquid return and the system drawing in air. Utility Model Content

[0005] This application provides a liquid level control device and a liquid cooling cabinet to achieve automatic adjustment of the liquid level inside the liquid cooling cabinet, thereby preventing the liquid level from being too high or too low.

[0006] In a first aspect, embodiments of this application provide a liquid level control device applied to a liquid-cooled cabinet. The liquid-cooled cabinet includes a cabinet body, a first inlet pipe connected to a liquid supply pipe, and a first outlet pipe connected to a return pipe. The device includes: a liquid level monitoring device disposed within the cabinet body, a control valve disposed on at least one of the first inlet pipe and the first outlet pipe, and a controller.

[0007] The controller is used to acquire the liquid level detection data of the liquid level monitoring device and adjust the opening degree of the control valve according to the liquid level detection data.

[0008] In the above-mentioned liquid level control device, by installing a liquid level monitoring device inside the cabinet and installing a control valve on at least one of the first liquid inlet pipe and the first liquid outlet pipe, the controller can obtain the liquid level detection data of the liquid level monitoring device and adjust the opening of the control valve according to the liquid level detection data to adjust the liquid level inside the cabinet, thereby avoiding the liquid level from being too high or too low. The entire adjustment process does not require frequent manual adjustment or a complex balancing pipeline system.

[0009] In one possible implementation, the controller is specifically used for:

[0010] When a first control valve is installed on the first liquid inlet pipe, if the liquid level in the cabinet is determined to be greater than a first preset height threshold based on the liquid level detection data, the opening of the first control valve is controlled to decrease. If the liquid level in the cabinet is determined to be less than a second preset height threshold based on the liquid level detection data, the opening of the first control valve is controlled to increase. The first preset height threshold is greater than or equal to the second preset height threshold.

[0011] When a second control valve is installed on the first liquid outlet pipeline, if the liquid level in the cabinet is determined to be greater than the first preset height threshold based on the liquid level detection data, the opening of the second control valve is increased; if the liquid level in the cabinet is determined to be less than the second preset height threshold based on the liquid level detection data, the opening of the second control valve is decreased.

[0012] When the first control valve is installed on the first inlet pipe and the second control valve is installed on the first outlet pipe, if the liquid level in the cabinet is determined to be greater than the first preset height threshold based on the liquid level detection data, the opening of the first control valve is reduced and / or the opening of the second control valve is increased. If the liquid level in the cabinet is determined to be less than the second preset height threshold based on the liquid level detection data, the opening of the first control valve is increased and / or the opening of the second control valve is decreased.

[0013] In one possible implementation, control valves are provided on both the first inlet pipe and the first outlet pipe. The device further includes a temperature monitoring device installed inside the cabinet and / or on the first outlet pipe.

[0014] The controller is also used to acquire temperature detection data from the temperature monitoring device and adjust the opening degree of the control valve according to the temperature detection data.

[0015] In the above-mentioned liquid level control device, when control valves are installed on both the first inlet pipe and the first outlet pipe, a temperature monitoring device can also be installed inside the cabinet or on the first outlet pipe. This allows the controller to acquire the temperature detection data from the temperature monitoring device and adjust the opening of the control valves based on the temperature detection data. This enables the controller to adjust the flow rate of the cooling medium in the cabinet according to the cooling demand of the cabinet, so that the cooling capacity of the cabinet matches the load and avoids the problem of mismatch between cooling capacity and load caused by providing the same cooling capacity to each cabinet.

[0016] In one possible implementation, the controller is specifically used for:

[0017] When the detected temperature is determined to be greater than the first target temperature based on the temperature detection data, the opening of the control valve installed on the first liquid inlet pipe is increased and / or the opening of the control valve installed on the first liquid outlet pipe is increased.

[0018] When the detected temperature is determined to be less than the second target temperature based on the temperature detection data, the opening of the control valve set on the first liquid inlet pipe is reduced and / or the opening of the control valve set on the first liquid outlet pipe is reduced, and the second target temperature is less than or equal to the first target temperature.

[0019] In one possible implementation, control valves are provided on both the first inlet pipe and the first outlet pipe. The controller is also used to acquire target parameters reflecting the load power of the load equipment in the liquid cooling cabinet and adjust the opening of the control valves according to the target parameters.

[0020] In the above-mentioned liquid level control device, the controller can also acquire target parameters reflecting the load power of the load equipment in the liquid-cooled cabinet, and adjust the opening of the control valve according to the target parameters. This enables the controller to adjust the flow rate of the cooling medium in the cabinet according to the cooling demand of the cabinet, so that the cooling capacity of the cabinet is matched with the load, avoiding the problem of mismatch between cooling capacity and load caused by providing the same cooling capacity to each cabinet.

[0021] In one possible implementation, the controller is specifically used for:

[0022] When the load power of the load device is determined to be greater than the first preset power threshold according to the target parameters, the opening of the control valve set on the first liquid inlet pipeline is increased and / or the opening of the control valve set on the first liquid outlet pipeline is increased.

[0023] When the load power of the load device is determined to be less than the second preset power threshold according to the target parameters, the opening of the control valve set on the first liquid inlet pipeline is reduced and / or the opening of the control valve set on the first liquid outlet pipeline is reduced, wherein the second preset power threshold is less than or equal to the first preset power threshold.

[0024] In one possible implementation, the target parameters include one or more of the following: the temperature of the load device, the power consumption of the load device, the power consumption of the power distribution unit supplying power to the load device, and the ratio of the data throughput of the switch providing data exchange for the load device to the total data throughput.

[0025] In one possible implementation, the device further includes a second inlet pipe and a second outlet pipe, the second inlet pipe connecting the cabinet to the supply pipe, and the second outlet pipe connecting the cabinet to the return pipe.

[0026] The aforementioned liquid level control device can also be equipped with a second liquid inlet pipe and a second liquid outlet pipe. The second liquid inlet pipe connects the cabinet to the liquid supply pipe, and the second liquid outlet pipe connects the cabinet to the liquid return pipe. In this case, the second liquid inlet pipe and the second liquid outlet pipe can be used as the main pipe, and the first liquid inlet pipe and the first liquid outlet pipe can be used as backup pipes. In this way, when it is necessary to control the liquid level in the cabinet or adjust the flow rate of the cooling medium, the control valve on the backup pipe can be opened or closed to avoid the valve causing an increase in resistance to the main pipe.

[0027] In one possible implementation, the liquid level monitoring device includes any one of the following: a liquid level switch or a liquid level sensor.

[0028] Secondly, embodiments of this application provide a liquid-cooled cabinet, the liquid-cooled cabinet comprising: a cabinet body, a first liquid inlet pipe connected to a liquid supply pipe, a first liquid outlet pipe connected to a liquid return pipe, and a liquid level control device provided in the first aspect of embodiments of this application. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a liquid level control device provided in an embodiment of this application;

[0031] Figure 2This is a schematic diagram of another liquid level control device provided in an embodiment of this application;

[0032] Figure 3 A schematic diagram of the structure of another liquid level control device provided in the embodiments of this application;

[0033] Figure 4 A schematic diagram of the structure of another liquid level control device provided in the embodiments of this application;

[0034] Figure 5 A schematic diagram of the structure of another liquid level control device provided in the embodiments of this application;

[0035] Figure 6 This is a schematic diagram of another liquid level control device provided in an embodiment of this application. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0038] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0039] Before introducing the liquid level control device and liquid cooling cabinet provided in the embodiments of this application, the technical background of the embodiments of this application will be described in detail for ease of understanding.

[0040] With the development of the internet industry, servers, as core equipment in data centers, are becoming increasingly powerful. Traditional air-cooling solutions are struggling to meet the heat dissipation needs of high-load servers, and the power efficiency (PUE) requirements for data centers are becoming increasingly stringent. Therefore, server liquid cooling technology has become a hot research topic in the data center industry. Based on whether the heat source is in contact with the liquid, liquid cooling technology can be divided into direct and indirect methods. Currently, the most common direct liquid cooling technology on the market is immersion liquid-cooled server technology.

[0041] Immersion liquid cooling systems immerse servers in a cooling medium, which is circulated by pumps to meet the server's continuous heat dissipation needs. Immersion liquid cooling systems typically consist of a CDU (Server Cooling Unit) and rack terminals. The system often uses a multi-unit layout, where multiple racks are connected in parallel on the main supply and return lines, and the CDU supplies liquid to multiple racks.

[0042] The existing immersion liquid cooling system has the following problems in actual use: Since the cabinet is an open cavity and the inside of the cabinet is connected to atmospheric pressure, the liquid inlet flow rate of the cabinet may not be equal to the liquid return flow rate. When the liquid inlet flow rate of some cabinets is greater than the liquid outlet flow rate, the liquid level in these cabinets rises, and in severe cases, the coolant overflows. When the liquid inlet flow rate of some cabinets is less than the liquid outlet flow rate, the coolant level in these cabinets drops, and in severe cases, the liquid level is lower than the return port, resulting in no liquid return and the system drawing in air.

[0043] In view of this, embodiments of this application provide a liquid level control device and a liquid cooling cabinet. By installing a liquid level monitoring device inside the cabinet and installing a control valve on at least one of the first liquid inlet pipe and the first liquid outlet pipe, the controller can obtain the liquid level detection data from the liquid level monitoring device and adjust the opening of the control valve according to the liquid level detection data to adjust the liquid level inside the cabinet, thereby avoiding the liquid level from being too high or too low. The entire adjustment process does not require frequent manual adjustments or a complex balancing pipeline system.

[0044] In addition, in existing immersion liquid cooling systems, each cabinet receives the same amount of cooling, but the cooling requirements of each cabinet may be different. This can lead to cabinets with low cooling requirements having excess cooling capacity, which may even cause condensation, while cabinets with high cooling requirements have insufficient cooling capacity. In severe cases, this can cause the temperature inside the cabinet to exceed the limit, resulting in overheating of the load.

[0045] Therefore, in this embodiment of the application, when control valves are installed on both the first inlet pipe and the first outlet pipe, a temperature monitoring device can also be installed inside the cabinet or on the first outlet pipe. This allows the controller to acquire the temperature detection data from the temperature monitoring device and adjust the opening of the control valves based on the temperature detection data. This enables the controller to adjust the flow rate of the cooling medium in the cabinet according to the cooling demand of the cabinet, so that the cooling capacity of the cabinet is matched with the load, avoiding the problem of mismatch between cooling capacity and load caused by providing the same cooling capacity to each cabinet.

[0046] After introducing the background technology of the embodiments of this application, the liquid level control device and liquid cooling cabinet provided in the embodiments of this application will be described in detail below with reference to specific embodiments.

[0047] See Figure 1 As shown, this is a schematic diagram of the structure of a liquid level control device in an embodiment of this application. It is applied to a liquid-cooled cabinet. The liquid-cooled cabinet (cabinet 1, cabinet 2, and cabinet 3 shown in the figure) includes a cabinet body, a first liquid inlet pipe connected to the liquid supply pipe 11, and a first liquid outlet pipe connected to the liquid return pipe 12. The liquid level control device includes: a liquid level monitoring device 13 installed in the cabinet body, a control valve 14 installed on at least one of the first liquid inlet pipe and the first liquid outlet pipe, and a controller (not shown in the figure).

[0048] The controller is used to acquire the liquid level detection data of the liquid level monitoring device 13 and adjust the opening degree of the control valve 14 according to the liquid level detection data.

[0049] It should be noted that the controller is communicatively connected to the liquid level monitoring device 13 and the control valve 14. The control valve 14 can be an electrically controlled valve, and the liquid level monitoring device includes any of the following: a liquid level switch or a liquid level sensor. The controller can be a separately configured controller or a main controller in a cabinet; this embodiment does not limit this.

[0050] In specific implementation, the control valve 14 is set on at least one of the first liquid inlet pipe and the first liquid outlet pipe. It can be set as shown in cabinet 1, where the control valve 14 is set on the first liquid inlet pipe; or as shown in cabinet 2, where the control valve is set on the first liquid outlet pipe; or as shown in cabinet 3, where two control valves are set, one on the first liquid inlet pipe and the other on the first liquid outlet pipe.

[0051] In practical applications, the supply line 11 and return line 12 can be connected to the secondary side of the plate heat exchanger in the cooling capacity distribution unit. A circulating water pump can be installed on the supply line 11 or return line 12, and the primary side of the plate heat exchanger is connected to cooling equipment (such as a cooling tower). The supply line 11 and return line 12 can be a loop (e.g., Figure 1 (As shown). The supply line 11 and the return line 12 can also be a single pipe, not forming a loop, as shown. Figure 2 As shown. Of course, in other embodiments of this application, the supply and return lines can take other forms, and this application does not limit this.

[0052] In the liquid level control device provided in this application embodiment, by installing a liquid level monitoring device 13 in the cabinet and installing a control valve 14 on at least one of the first liquid inlet pipe and the first liquid outlet pipe, the controller can obtain the liquid level detection data of the liquid level monitoring device 13 and adjust the opening of the control valve 14 according to the liquid level detection data to adjust the liquid level in the cabinet and avoid the liquid level being too high or too low.

[0053] In practice, when the controller adjusts the opening of the control valve based on the liquid level detection data, the following situations can be identified depending on the setting method of the control valve:

[0054] Scenario 1: Install a first control valve on the first inlet pipeline (e.g., Figure 1 (The situation in cabinet 1).

[0055] In this situation, when the controller determines that the liquid level inside the cabinet is greater than the first preset height threshold based on the liquid level detection data, it controls to reduce the opening of the first control valve to reduce the liquid inflow and thus lower the liquid level inside the cabinet. When the controller determines that the liquid level inside the cabinet is less than the second preset height threshold based on the liquid level detection data, it controls to increase the opening of the first control valve to increase the liquid inflow and thus raise the liquid level inside the cabinet.

[0056] Wherein, the first preset height threshold is greater than or equal to the second preset height threshold, and both the first preset height threshold and the second preset height threshold can be flexibly set according to actual needs. This application embodiment does not limit this.

[0057] Scenario 2: Install a second control valve (e.g., on the first outlet pipeline) Figure 1 (The situation in cabinet 2).

[0058] In this situation, when the liquid level in the cabinet is determined to be greater than the first preset height threshold based on the liquid level detection data, the opening of the second control valve is increased to increase the liquid output and thus reduce the liquid level in the cabinet; when the liquid level in the cabinet is determined to be less than the second preset height threshold based on the liquid level detection data, the opening of the second control valve is decreased to reduce the liquid output and thus increase the liquid level in the cabinet.

[0059] Scenario 3: A first control valve is installed on the first inlet pipe, and a second control valve is installed on the first outlet pipe (e.g., ...). Figure 1(Regarding cabinet 3).

[0060] In this situation, when the liquid level in the cabinet is determined to be greater than the first preset height threshold based on the liquid level detection data, the opening of the first control valve is reduced and / or the opening of the second control valve is increased to reduce the inflow and / or increase the outflow, thereby lowering the liquid level in the cabinet. When the liquid level in the cabinet is determined to be less than the second preset height threshold based on the liquid level detection data, the opening of the first control valve is increased and / or the opening of the second control valve is decreased to increase the inflow and / or decrease the outflow, thereby raising the liquid level in the cabinet.

[0061] In practical applications, the specific methods for increasing or decreasing the opening of the control valve can be proportional-integral-derivative adjustment, gradual adjustment, or other methods in related technologies. This application does not limit these methods.

[0062] In specific implementation, the embodiments of this application may further include a second liquid inlet pipe and a second liquid outlet pipe, wherein the second liquid inlet pipe connects the cabinet to the liquid supply pipe, and the second liquid outlet pipe connects the cabinet to the liquid return pipe.

[0063] like Figure 3 As shown, taking the case where a first control valve 32 is installed on the first liquid inlet pipe 31 and a second control valve 34 is installed on the first liquid outlet pipe 33 as an example, a second liquid inlet pipe 35 and a second liquid outlet pipe 36 are added. The second liquid inlet pipe 35 connects the cabinet to the liquid supply pipe, and the second liquid outlet pipe 36 connects the cabinet to the liquid return pipe.

[0064] In this configuration, the second inlet pipe 35 and the second outlet pipe 36 can be used as the main pipelines, while the first inlet pipe 31 and the first outlet pipe 33 can be used as backup pipelines. When it is necessary to control the liquid level inside the cabinet, the opening of the control valves (first control valve 32 and second control valve 34) on the backup pipelines (first inlet pipe 31 and first outlet pipe 33) can be adjusted to regulate the liquid level inside the cabinet. The specific control principle is similar to the adjustment principle described above and will not be repeated here. This method, by adjusting the control valves on the backup pipelines, avoids increasing the resistance of the main pipeline caused by the valves.

[0065] Considering that in the existing immersion liquid cooling system, each cabinet receives the same amount of cooling, but the cooling demand of each cabinet may be different, this will result in cabinets with small cooling demand having excess cooling capacity, which may even cause condensation, while cabinets with large cooling demand will have insufficient cooling capacity, which may cause the temperature inside the cabinet to exceed the limit and cause overheating.

[0066] like Figure 4As shown, when control valves are installed on both the first inlet pipe 41 and the first outlet pipe 42, the liquid level control device provided in this embodiment further includes: a temperature monitoring device 43 installed inside the cabinet and / or on the first outlet pipe (here, the example is provided with the device installed inside the cabinet). The temperature monitoring device 43 may include, but is not limited to, a temperature sensor.

[0067] The controller is also used to acquire temperature detection data from the temperature monitoring device and adjust the opening of the control valve based on the temperature detection data.

[0068] It should be noted that when the temperature monitoring device is installed inside the cabinet, it collects the temperature of the cooling medium inside the cabinet; when the temperature monitoring device is installed on the first liquid outlet pipe, it collects the temperature of the cooling medium inside the liquid outlet pipe. In practical applications, the installation location of the temperature monitoring device can be flexibly selected. Of course, in other embodiments of this application, temperature monitoring devices can also be installed both inside the cabinet and on the first liquid outlet pipe, and the higher of the two temperatures collected can be used as the temperature detection data.

[0069] In this implementation, the controller can acquire temperature detection data from the temperature monitoring device and adjust the opening of the control valve according to the temperature detection data. This allows the controller to adjust the flow rate of the cooling medium in the cabinet according to the cooling demand of the cabinet, so that the cooling capacity of the cabinet matches the load and avoids the problem of mismatch between cooling capacity and load caused by providing the same cooling capacity to each cabinet.

[0070] Specifically, the controller is used for:

[0071] When the detected temperature is determined to be greater than the first target temperature based on the temperature detection data, the opening of the control valve set on the first liquid inlet pipe and / or the opening of the control valve set on the first liquid outlet pipe are increased to increase the flow rate of the cooling medium in the cabinet, increase the cooling capacity provided to the cabinet, and achieve the purpose of reducing the temperature inside the cabinet.

[0072] When the detected temperature is determined to be lower than the second target temperature based on the temperature detection data, the opening of the control valve set on the first liquid inlet pipe is reduced and / or the opening of the control valve set on the first liquid outlet pipe is reduced, so as to reduce the flow rate of the cooling medium in the cabinet, reduce the cooling capacity provided to the cabinet, and make the temperature in the cabinet close to the set temperature.

[0073] The second target temperature is less than or equal to the first target temperature. The first and second target temperatures can be set according to actual needs or based on the average temperature of all cabinets. This application does not limit this.

[0074] Of course, such as Figure 5As shown, when control valves are installed on both the first inlet pipe and the first outlet pipe, and a second inlet pipe and a second outlet pipe are also included, the opening degree of the control valves can be adjusted according to the temperature detection data of the temperature monitoring device 51. The specific control principle is the same as... Figure 4 The control principle will not be elaborated here.

[0075] The above describes how to adjust the opening of the control valve based on the temperature detection data from the temperature monitoring device. In practical applications, such as... Figure 6 As shown, when control valves are installed on both the first liquid inlet pipe 61 and the first liquid outlet pipe 62, if the controller can communicate with the load equipment in the cabinet, the controller can also obtain the target parameters reflecting the load power of the load equipment in the liquid cooling cabinet, and adjust the opening of the control valves according to the target parameters.

[0076] The target parameters include one or more of the following: the temperature of the load device, the power consumption of the load device, the power consumption of the power distribution unit that supplies power to the load device, and the ratio of the data throughput of the switch that provides data exchange for the load device to the total data throughput of all cabinets in the system.

[0077] In this case, after the controller sets the target parameters, it adjusts the opening of the control valves according to the target parameters, thereby adjusting the flow rate of the cooling medium in the cabinet according to the cooling demand of the cabinet. This ensures that the cooling capacity of the cabinet matches the load, avoiding the problem of mismatch between cooling capacity and load caused by providing the same cooling capacity to each cabinet.

[0078] Specifically, the controller is used for:

[0079] When the load power of the load device is determined to be greater than the first preset power threshold according to the target parameters, the opening of the control valve set on the first liquid inlet pipe is increased and / or the opening of the control valve set on the first liquid outlet pipe is increased to increase the flow rate of the cooling medium in the cabinet and increase the cooling capacity provided to the cabinet.

[0080] When the load power of the load device is determined to be less than the second preset power threshold according to the target parameters, the opening of the control valve set on the first liquid inlet pipe is reduced and / or the opening of the control valve set on the first liquid outlet pipe is increased, so as to reduce the flow rate of the cooling medium in the cabinet and reduce the cooling capacity provided to the cabinet.

[0081] The second preset power threshold is less than or equal to the first preset power threshold, and can be set according to actual conditions or experience. This application embodiment does not limit this.

[0082] Of course, for Figure 3The cabinet shown, with control valves installed on both the first inlet and first outlet liquid lines, and also including a second inlet and second outlet liquid lines, can similarly adjust the opening of the control valves according to target parameters. The specific control principle is the same. Figure 6 The control principle will not be elaborated here.

[0083] In practical applications, the three methods of adjusting the opening of the control valve described in this application embodiment—adjusting the opening of the control valve based on the liquid level detection data of the liquid level monitoring device, adjusting the opening of the control valve based on the temperature detection data of the temperature monitoring device, and adjusting the opening of the control valve based on the target parameters reflecting the load power of the load equipment in the liquid cooling cabinet—can be used individually or in combination.

[0084] Based on the same concept, this application provides a liquid-cooled cabinet, which includes: a cabinet body, a first liquid inlet pipe connected to a liquid supply pipe, a first liquid outlet pipe connected to a liquid return pipe, and a liquid level control device provided in this application embodiment, which is used to control the liquid level of the cooling medium inside the cabinet.

[0085] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A liquid level control device, applied to a liquid-cooled cabinet, the liquid-cooled cabinet comprising a cabinet body, a first liquid inlet pipe connected to a liquid supply pipe, and a first liquid outlet pipe connected to a liquid return pipe, characterized in that, The device includes: a liquid level monitoring device installed inside the cabinet, a control valve installed on at least one of the first liquid inlet pipe and the first liquid outlet pipe, and a controller. The controller is used to acquire the liquid level detection data of the liquid level monitoring device and adjust the opening degree of the control valve according to the liquid level detection data.

2. The apparatus according to claim 1, characterized in that, The controller is specifically used for: When a first control valve is installed on the first liquid inlet pipe, if the liquid level in the cabinet is determined to be greater than a first preset height threshold based on the liquid level detection data, the opening of the first control valve is controlled to decrease. If the liquid level in the cabinet is determined to be less than a second preset height threshold based on the liquid level detection data, the opening of the first control valve is controlled to increase. The first preset height threshold is greater than or equal to the second preset height threshold. When a second control valve is installed on the first liquid outlet pipeline, if the liquid level in the cabinet is determined to be greater than the first preset height threshold based on the liquid level detection data, the opening of the second control valve is increased; if the liquid level in the cabinet is determined to be less than the second preset height threshold based on the liquid level detection data, the opening of the second control valve is decreased. When the first control valve is installed on the first inlet pipe and the second control valve is installed on the first outlet pipe, if the liquid level in the cabinet is determined to be greater than the first preset height threshold based on the liquid level detection data, the opening of the first control valve is reduced and / or the opening of the second control valve is increased. If the liquid level in the cabinet is determined to be less than the second preset height threshold based on the liquid level detection data, the opening of the first control valve is increased and / or the opening of the second control valve is decreased.

3. The apparatus according to claim 1, characterized in that, Both the first inlet pipe and the first outlet pipe are equipped with control valves. The device further includes a temperature monitoring device installed inside the cabinet and / or on the first outlet pipe. The controller is also used to acquire temperature detection data from the temperature monitoring device and adjust the opening degree of the control valve according to the temperature detection data.

4. The apparatus according to claim 3, characterized in that, The controller is specifically used for: When the detected temperature is determined to be greater than the first target temperature based on the temperature detection data, the opening of the control valve installed on the first liquid inlet pipe is increased and / or the opening of the control valve installed on the first liquid outlet pipe is increased. When the detected temperature is determined to be less than the second target temperature based on the temperature detection data, the opening of the control valve set on the first liquid inlet pipe is reduced and / or the opening of the control valve set on the first liquid outlet pipe is reduced, and the second target temperature is less than or equal to the first target temperature.

5. The apparatus according to claim 1, characterized in that, Control valves are provided on both the first liquid inlet pipe and the first liquid outlet pipe. The controller is also used to acquire target parameters reflecting the load power of the load equipment in the liquid cooling cabinet and adjust the opening of the control valves according to the target parameters.

6. The apparatus according to claim 5, characterized in that, The controller is specifically used for: When the load power of the load device is determined to be greater than the first preset power threshold according to the target parameters, the opening of the control valve set on the first liquid inlet pipeline is increased and / or the opening of the control valve set on the first liquid outlet pipeline is increased. When the load power of the load device is determined to be less than the second preset power threshold according to the target parameters, the opening of the control valve set on the first liquid inlet pipeline is reduced and / or the opening of the control valve set on the first liquid outlet pipeline is reduced, wherein the second preset power threshold is less than or equal to the first preset power threshold.

7. The apparatus according to claim 5, characterized in that, The target parameters include one or more of the following: the temperature of the load device, the power consumption of the load device, the power consumption of the power distribution unit that supplies power to the load device, and the ratio of the data throughput of the switch that provides data exchange for the load device to the total data throughput.

8. The apparatus according to any one of claims 1-7, characterized in that, The device further includes a second inlet pipe and a second outlet pipe, the second inlet pipe being connected to the cabinet and the supply pipe, and the second outlet pipe being connected to the cabinet and the return pipe.

9. The apparatus according to any one of claims 1-7, characterized in that, The liquid level monitoring device includes any one of the following: a liquid level switch or a liquid level sensor.

10. A liquid-cooled cabinet, characterized in that, The liquid cooling cabinet includes: a cabinet body, a first liquid inlet pipe connected to the liquid supply pipe, a first liquid outlet pipe connected to the liquid return pipe, and a liquid level control device as described in any one of claims 1-9.

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