Pressure control device and method based on gravity heat pipe and its liquid-cooled data center

Abstract

This application provides a pressure control device, method, and liquid-cooled data center based on a gravity heat pipe. The device includes: a gravity heat pipe assembly, a liquid-cooled box equipped with a sensor assembly, a gas circulation power assembly, and a control assembly. One end of the liquid-cooled box is connected to one end of the gravity heat pipe assembly via a first pipe. A first switch assembly is installed on the first pipe. The power assembly is connected in parallel to the first switch assembly. The sensor assembly is used to activate the gravity heat pipe assembly to perform phase change heat transfer when the first switch assembly is in a conducting state, and to monitor the pressure in the liquid-cooled box at different time points. The control assembly is used to control the first switch assembly to be in a disconnected state when the pressure changes; and to determine the change in gas volume in the liquid-cooled box based on the pressure at different time points, and to control the power assembly to work according to the change in gas volume in the liquid-cooled box to adjust the pressure change.

Description

Technical Field

[0001] This application relates to the field of pressure control technology, and in particular to a pressure control device, method and liquid-cooled data center based on a gravity heat pipe. Background Technology

[0002] Gravity heat pipe circulation and heat conversion are unstable, making it impossible to precisely control heat exchange and pressure changes in the phase change system; when pressure changes are controllable, the degree to which the filling rate is affected decreases. Currently, there is no effective solution to this problem. Summary of the Invention

[0003] To address the existing technical problems, embodiments of this application provide a pressure control device, method, and liquid-cooled data center based on a gravity heat pipe.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0005] This application provides a pressure control device based on a gravity heat pipe. The device includes: a gravity heat pipe assembly, a liquid-cooled box equipped with a sensor assembly, a gas circulation power assembly, and a control assembly. One end of the liquid-cooled box is connected to one end of the gravity heat pipe assembly via a first pipe. A first switch assembly is provided on the first pipe. The power assembly is connected in parallel to the first switch assembly. The other end of the liquid-cooled box is connected to the other end of the gravity heat pipe assembly via a second pipe. The control assembly is connected to the gravity heat pipe assembly, the sensor assembly, and the power assembly.

[0006] The sensor assembly is used to activate the gravity heat pipe assembly to perform phase change heat transfer when the first switch assembly is in the on state, and to monitor the pressure in the liquid cooling box at different time points.

[0007] The control component is configured to control the first switch component to be in an open state when the pressure changes; and to determine the change in gas volume in the liquid cooling tank based on the pressure at different time points, and to control the power component to work according to the change in gas volume in the liquid cooling tank in order to adjust the pressure change.

[0008] In the above scheme, the sensor assembly includes a pressure sensor; the first switching assembly includes an electric ball valve;

[0009] The pressure sensor is used to monitor the first pressure at a first time point and the second pressure at a second time point inside the liquid cooling tank.

[0010] The control component is also configured to control the electric ball valve to be in an open state when the values ​​of the first pressure and the second pressure are different; and to determine the change in gas volume inside the liquid cooling tank based on the values ​​of the first pressure and the second pressure.

[0011] In the above scheme, the power component includes a first gas circulation pump with a constant frequency;

[0012] The control component is further configured to acquire the pipe diameter parameters and flow rate parameters of the first gas circulation pump, determine the flow rate of the first gas circulation pump based on the pipe diameter parameters and the flow rate parameters, determine the running time of the first gas circulation pump based on the change in gas volume in the liquid cooling tank and the flow rate of the first gas circulation pump, and control the start and stop of the first gas circulation pump based on the running time.

[0013] In the above scheme, the power component includes a second gas circulation pump with a variable frequency;

[0014] The control component is also used to control the change in the operating frequency of the second gas circulation pump according to the change in pressure; the degree of change in pressure is proportional to the degree of change in frequency.

[0015] In the above scheme, the power component includes a third gas circulation pump;

[0016] The control component is also used to input the pressure at different time points and the change in gas volume in the liquid cooling tank into the monitoring parameters of the third gas circulation pump, so as to control the running time of the third gas circulation pump.

[0017] In the above scheme, the control component includes a controller; the gravity heat pipe assembly includes a fan and a gravity heat pipe; the fan is located on the gravity heat pipe; and the controller is connected to the fan.

[0018] The controller is also used to control the first switching assembly to be in the conducting state and the fan to operate, so as to start the gravity heat pipe assembly to perform phase change heat transfer.

[0019] This application provides a pressure control method based on a gravity heat pipe, applied in the aforementioned pressure control device based on a gravity heat pipe; the method includes:

[0020] With the first switch assembly in the on state, the gravity heat pipe assembly is activated to perform phase change heat transfer, and the pressure in the liquid cooling box at different time points is monitored.

[0021] When the pressure changes, the first switch assembly is controlled to be in the off state; the change in gas volume inside the liquid cooling tank is determined based on the pressure at different time points.

[0022] The power unit is controlled to operate based on the change in gas volume within the liquid cooling tank, thereby adjusting the pressure change.

[0023] In the above scheme, the method further includes:

[0024] The monitoring of pressure at different time points inside the liquid cooling tank includes:

[0025] Monitor the first pressure at a first time point and the second pressure at a second time point inside the liquid cooling tank;

[0026] Correspondingly, controlling the first switching assembly to be in an open state when the pressure changes includes:

[0027] When the values ​​of the first pressure and the second pressure are different, the electric ball valve is controlled to be in the off state;

[0028] Correspondingly, determining the change in gas volume within the liquid cooling tank based on the pressure at different time points includes:

[0029] The change in gas volume inside the liquid cooling box is determined based on the values ​​of the first pressure and the second pressure.

[0030] In the above scheme, controlling the operation of the power component based on the change in gas volume within the liquid-cooled tank includes:

[0031] Obtain the pipe diameter and flow rate parameters of the first gas circulation pump;

[0032] The flow rate of the first gas circulation pump is determined based on the pipe diameter parameter and the flow rate parameter.

[0033] The running time of the first gas circulation pump is determined based on the change in gas volume inside the liquid cooling box and the flow rate of the first gas circulation pump.

[0034] The start and stop of the first gas circulation pump are controlled based on the running time.

[0035] In the above scheme, the method further includes:

[0036] The operating frequency of the second gas circulation pump is controlled according to the pressure change; the degree of pressure change is proportional to the degree of frequency change.

[0037] In the above scheme, controlling the operation of the power component based on the change in gas volume within the liquid-cooled tank includes:

[0038] The pressure at different time points and the change in gas volume in the liquid cooling tank are input into the monitoring parameters of the gas circulation pump to control the operating time of the gas circulation pump.

[0039] This application also provides a liquid-cooled data center, which includes any of the devices described above.

[0040] This application also provides a computer program product, including a computer program that, when executed by a processor, implements any step of the method described above.

[0041] This application also provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements any step of the method described above.

[0042] This application provides a pressure control device, method, and liquid-cooled data center based on a gravity heat pipe. The device includes: a gravity heat pipe assembly, a liquid-cooled box equipped with a sensor assembly, a gas circulation power assembly, and a control assembly. One end of the liquid-cooled box is connected to one end of the gravity heat pipe assembly via a first pipe. A first switch assembly is installed on the first pipe. The power assembly is connected in parallel to the first switch assembly. The other end of the liquid-cooled box is connected to the other end of the gravity heat pipe assembly via a second pipe. The control assembly is connected to the gravity heat pipe assembly, the sensor assembly, and the power assembly respectively. The sensor assembly is used to activate the gravity heat pipe assembly to perform phase change heat transfer when the first switch assembly is in a conducting state, and to monitor the pressure in the liquid-cooled box at different time points. The control assembly is used to control the first switch assembly to be in a disconnected state when the pressure changes. It also determines the change in gas volume in the liquid-cooled box based on the pressure at different time points, and controls the power assembly to operate according to the change in gas volume in the liquid-cooled box to adjust the pressure change. The technical solution of this application embodiment adds a gas circulation power component to the device and installs a first switch component on the first pipeline. When the sensor component monitors pressure changes at different time points within the liquid-cooled tank, the control component controls the first switch component to be in an open state. Furthermore, based on the pressure changes at these different time points, the change in gas volume within the liquid-cooled tank is determined, and the power component is controlled to adjust the pressure changes accordingly. This achieves precise control of pressure changes during heat exchange in the phase change system. Attached Figure Description

[0043] Figure 1 A schematic diagram of a pressure control device based on a gravity heat pipe provided in an embodiment of this application;

[0044] Figure 2Another schematic diagram of a pressure control device based on a gravity heat pipe provided in this application embodiment;

[0045] Figure 3 A schematic diagram illustrating an application scenario of a pressure control device based on a gravity heat pipe, provided in an embodiment of this application;

[0046] Figure 4 This is a schematic diagram illustrating the implementation process of a pressure control method based on a gravity heat pipe according to an embodiment of this application. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of the invention will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0048] In the process of gravity heat pipe heat exchange, low pressure and low boiling point are required, and low boiling point is conducive to phase change nucleation boiling heat exchange of coolant.

[0049] Conventional gravity heat pipe heat exchange typically occurs in the evaporation section, adiabatic section, and condensation section; by utilizing the structural characteristics of pressure difference, gravity difference, and the inner metal sponge layer of the heat pipe, the heat pipe achieves high heat exchange efficiency and high energy efficiency.

[0050] On the one hand, since gravity heat pipes generally have a symmetrical structure, the presence of an inclination angle is more conducive to the refrigerant's gravity return, but it will disrupt the symmetry of the internal flow and thus affect the heat transfer characteristics.

[0051] On the other hand, within a finite gravity heat pipe-liquid cooling box, processes such as single-phase natural convection, two-phase natural convection, nucleation boiling of the liquid pool, and evaporation and condensation exist simultaneously. The gravity heat pipe cycle-heat conversion is unstable, making it impossible to accurately control the heat exchange and pressure changes of the phase change system.

[0052] In practical applications, the liquid filling rate = volume of refrigerant charged / total volume of gravity heat pipe. During natural gravity phase change, if the liquid filling rate is too low, the pipe wall will heat up, the liquid pool will dry up, and the temperature and pressure will fluctuate greatly. If the liquid filling rate is too high, the liquid-cooled phase change working fluid may enter the insulation section or even the condensation section, resulting in a reduction in heat exchange efficiency. When the pressure change can be controlled, the degree to which the liquid filling rate is affected will be reduced.

[0053] Based on this, embodiments of this application provide a pressure control device based on a gravity heat pipe. Figure 1 A schematic diagram of a pressure control device based on a gravity heat pipe provided in an embodiment of this application; Figure 2 Another schematic diagram of a pressure control device based on a gravity heat pipe provided in this application embodiment; Figure 3 This application provides an schematic diagram of an application scenario for a pressure control device based on a gravity heat pipe; the following can be combined with... Figure 1 , Figure 2 and Figure 3 To understand the device 100, it includes: a gravity heat pipe assembly 101, a liquid-cooled box 103 equipped with a sensor assembly 102, a gas circulation power assembly 104, and a control assembly 105; one end of the liquid-cooled box is connected to one end of the gravity heat pipe assembly via a first pipe; a first switch assembly 106 is provided on the first pipe; the power assembly 104 is connected in parallel to the first switch assembly 106; the other end of the liquid-cooled box 103 is connected to the other end of the gravity heat pipe assembly 101 via a second pipe; the control assembly 105 is connected to the gravity heat pipe assembly 101, the sensor assembly 102, and the power assembly 104 respectively.

[0054] The sensor assembly 102 is used to activate the gravity heat pipe assembly 101 to perform phase change heat transfer when the first switch assembly 106 is in the on state, and to monitor the pressure in the liquid cooling box 103 at different time points.

[0055] The control component 105 is used to control the first switch component 106 to be in an open state when the pressure changes; and to determine the change in gas volume in the liquid cooling tank 103 based on the pressure at different time points, and to control the power component 104 to work according to the change in gas volume in the liquid cooling tank 103 to adjust the pressure change.

[0056] It should be noted that the system in the gravity heat pipe-based pressure control device 100 can be determined according to the actual situation, and is not limited here. As an example, the gravity heat pipe-based pressure control device 100 can also be understood as an optimized pressure control device for a gravity heat pipe phase change liquid cooler.

[0057] The gravity heat pipe assembly 101 can be any gravity heat pipe assembly, and no limitation is made here. As an example, the gravity heat pipe assembly 101 may include a fan and a gravity heat pipe. In practical applications, the gravity heat pipe may be simply referred to as a heat pipe.

[0058] The sensor assembly 102 can be determined according to actual conditions and is not limited here. As an example, the sensor assembly 102 may include a pressure sensor. The symbol for the pressure sensor may be P.

[0059] The liquid cooling tank 103 can be determined according to the actual situation and is not limited here. As an example, the liquid cooling tank 103 can be a two-phase immersion tank. In practical applications, the two-phase immersion tank can also be simply referred to as a phase change liquid cooling tank.

[0060] The power component 104 for gas circulation can be determined according to actual conditions and is not limited here. As an example, the power component 104 may include a gas circulation pump; for example, the power component 104 may include a first gas circulation pump with a constant frequency, a second gas circulation pump with a variable frequency, and a third gas circulation pump; wherein, the first gas circulation pump with a constant frequency can be understood as a fixed-frequency gas circulation pump; the second gas circulation pump with a variable frequency can be understood as a variable-frequency gas circulation pump; and the third gas circulation pump may include a peristaltic pump.

[0061] The control component 105 can be determined according to actual conditions and is not limited here. As an example, the control component 105 may include a controller. In practical applications, the controller may be a centralized procurement controller.

[0062] The first switch assembly 106 can be determined according to actual conditions, and is not limited here. As an example, the first switch assembly 106 includes an electric ball valve.

[0063] The control component 105 is connected to the gravity heat pipe component 101, the sensor component 102, and the power component 104, respectively. This connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; the wired connection can be a wire connection capable of transmitting data; the wireless connection can use short-range communication technologies such as Bluetooth or Zigbee; or it can use long-range communication technologies such as WiFi (Wireless Fidelity).

[0064] Activating the gravity heat pipe assembly 101 for phase change heat transfer when the first switch assembly 106 is in the ON state can be understood as turning on the first switch assembly 106 and the gravity heat pipe assembly 101 to perform gravity heat transfer phase change heat transfer. As an example, the first switch assembly 106 can be an electric ball valve; the gravity heat pipe assembly 101 can include a fan and a gravity heat pipe. Activating the first switch assembly 106 and the gravity heat pipe assembly 101 for gravity heat transfer phase change heat transfer can be understood as turning on the electric ball valve, the fan, and the gravity heat pipe to perform gravity heat transfer phase change heat transfer.

[0065] The pressure inside the liquid cooling tank 103 at different time points is monitored; wherein, the different time points can be determined according to the actual situation and are not limited here. As an example, the different time points may include at least a first time point and a second time point, and monitoring the pressure inside the liquid cooling tank 103 at different time points can be understood as monitoring the first pressure at the first time point and the second pressure at the second time point inside the liquid cooling tank 103.

[0066] When the pressure changes, controlling the first switch assembly 106 to be in the off state can be understood as turning off the first switch assembly 106 when the pressure changes.

[0067] The specific determination process for determining the change in gas volume inside the liquid cooling tank 103 based on the pressure at different time points can be determined according to the actual situation and is not limited here. As an example, the different time points may include at least a first time point and a second time point. The determination of the change in gas volume inside the liquid cooling tank 103 based on the pressure at the different time points can be based on the value of the first pressure and the value of the second pressure. The determination of the change in gas volume inside the liquid cooling tank 103 based on the value of the first pressure and the value of the second pressure can be based on the value of the first pressure and the value of the second pressure through a preset algorithm. The preset algorithm can be determined according to the actual situation and is not limited here. As an example, the preset algorithm can refer to the following formula (1):

[0068]

[0069] In equation (1), ΔV: the increase in gas volume caused by the phase change of the cooling working fluid, in L;

[0070] P1: Data collection time point 1, pressure inside the immersion cabinet, unit kap;

[0071] V1: Data collection time point 1, gas volume in the immersion chamber, unit L;

[0072] n: Amount of substance, in moles (mol);

[0073] R: Universal gas constant, 8.31 J / (mol·K);

[0074] r: Heat absorbed per unit mass of substance during vaporization, in J / kg;

[0075] c: Specific heat capacity of the cooling working fluid, in kJ / kg·K;

[0076] P2: Data collection time point 2, pressure inside the immersion cabinet, unit kap;

[0077] In equation (1), all initial state quantities except P2 are known quantities. When the pressure changes, the change in gas volume during the phase transition can be calculated. That is, the change in gas volume inside the liquid cooling box 103 is determined based on the pressure at different time points.

[0078] The power assembly 104 may include a gas circulation pump; controlling the operation of the power assembly 104 according to the change in gas volume in the liquid cooling tank 103 to adjust the pressure change can be understood as controlling the operation of the gas circulation pump according to the change in gas volume in the liquid cooling tank 103 to adjust the pressure change.

[0079] In practical applications, when the first switch assembly 106 is an electric ball valve, the power assembly 104 is a gas circulation pump, the sensor assembly 102 is a pressure sensor, and the gravity heat pipe assembly 101 may include a fan and a gravity heat pipe, the electric ball valve, fan, and gravity heat pipe can be turned on in normal mode to perform gravity heat pipe phase change heat transfer. The pressure sensor is used to monitor the pressure at different time points within the liquid cooling tank 103, for example, collecting the pressure at a first time point and the pressure at a second time point; where the first and second time points can be determined according to actual conditions and are not limited here. As an example, the first time point can be recorded as time point ① or time point 1; the second time point can be recorded as time point ② or time point 2. The pressure corresponding to the first time point can be recorded as P1; the pressure corresponding to the second time point can be recorded as P2. When the pressure at the first time point is different from the pressure at the second time point, the electric ball valve is closed. The change in gas volume in the liquid cooling box 103 is calculated by using the latent heat of vaporization calculation equation, the ideal gas equation, and the heat exchange calculation equation, with reference to the above formula (1). In the pressure control mode, the gas circulation pump is controlled to circulate in order to adjust the change in pressure.

[0080] In this embodiment, a gas circulation power component is added to the device, and a first switch component is installed on the first pipeline. The control component, when the sensor component monitors pressure changes at different time points within the liquid-cooled tank, controls the first switch component to be in an open state. Furthermore, based on the pressure changes at these different time points, the change in gas volume within the liquid-cooled tank is determined, and the power component is controlled to adjust the pressure changes accordingly. This achieves precise control of pressure changes during heat exchange in the phase change system.

[0081] In one optional embodiment of this application, the sensor assembly 102 includes a pressure sensor 1021; the first switch assembly 106 includes an electric ball valve 1061.

[0082] The pressure sensor 1021 is used to monitor the first pressure at a first time point and the second pressure at a second time point inside the liquid cooling box 103.

[0083] The control component 105 is also configured to control the electric ball valve 1061 to be in an open state when the values ​​of the first pressure and the second pressure are different; and to determine the change in gas volume in the liquid cooling box 103 based on the values ​​of the first pressure and the second pressure.

[0084] It should be noted that the sensor assembly 102 includes a pressure sensor 1021; the pressure sensor 1021 can be denoted as p.

[0085] The pressure at a first time point and the pressure at a second time point are monitored within the liquid cooling tank 103. Both the first and second time points can be determined based on actual conditions and are not limited here. As an example, the first time point can be recorded as time point ① or time point 1; the second time point can be recorded as time point ② or time point 2. The first pressure can be recorded as P1; the second pressure can be recorded as P2.

[0086] When the values ​​of the first pressure and the second pressure are different, controlling the electric ball valve 1061 to be in the off state can be understood as closing the electric ball valve 1061 when the values ​​of the first pressure and the second pressure are different.

[0087] The specific process for determining the change in gas volume within the liquid cooling tank 103 based on the values ​​of the first pressure and the second pressure can be determined according to actual circumstances and is not limited here. As an example, determining the change in gas volume within the liquid cooling tank 103 based on the values ​​of the first pressure and the second pressure can be achieved by using a preset algorithm to determine the change in gas volume within the liquid cooling tank 103 based on the values ​​of the first pressure and the second pressure; wherein, the preset algorithm can be determined according to actual circumstances and is not limited here. As an example, the preset algorithm can refer to the above formula (1).

[0088] In one alternative embodiment of this application, the power assembly 104 includes a first gas circulation pump with a constant frequency;

[0089] The control component 105 is further configured to acquire the pipe diameter parameters and flow rate parameters of the first gas circulation pump 1041, determine the flow rate of the first gas circulation pump based on the pipe diameter parameters and the flow rate parameters, determine the running time of the first gas circulation pump based on the change in gas volume in the liquid cooling tank 103 and the flow rate of the first gas circulation pump 1041, and control the start and stop of the first gas circulation pump based on the running time.

[0090] It should be noted that the power assembly 104 includes a first gas circulation pump with a constant frequency; the first gas circulation pump with a constant frequency can be understood as a fixed-frequency gas circulation pump.

[0091] Obtain the pipe diameter and flow rate parameters of the first gas circulation pump 1041. The pipe diameter and flow rate parameters can be determined according to the actual situation and are not limited here.

[0092] Determining the flow rate of the first gas circulation pump based on the pipe diameter parameter and the flow rate parameter can be understood as calculating the flow rate of the first gas circulation pump based on the pipe diameter parameter and the flow rate parameter. In practical applications, a fixed-frequency gas circulation pump with a fixed flow rate and a fixed pipe diameter can be used to calculate the flow rate of the first gas circulation pump.

[0093] Determining the operating time of the first gas circulation pump based on the change in gas volume within the liquid cooling tank 103 and the flow rate of the first gas circulation pump 1041 can be understood as dividing the change in gas volume within the liquid cooling tank 103 by the flow rate of the first gas circulation pump 1041, thereby calculating the operating time of the first gas circulation pump.

[0094] Controlling the start and stop of the first gas circulation pump based on the running time can be understood as controlling the start and stop of the first gas circulation pump so that the first gas circulation pump operates within the running time.

[0095] In this embodiment, in practical applications, a fixed-frequency gas circulation pump with a fixed flow rate and pipe diameter can be used. The pressure change is adjusted by calculating the pump's operating time and controlling its start and stop. This control process is low-cost.

[0096] In one alternative embodiment of this application, the power assembly 104 includes a second gas circulation pump with a variable frequency;

[0097] The control component 105 is also used to control the change in the operating frequency of the second gas circulation pump according to the change in pressure; the degree of change in pressure is proportional to the degree of change in frequency.

[0098] In this embodiment, the power assembly 104 includes a second gas circulation pump with a variable frequency; the second gas circulation pump with a variable frequency can be understood as a variable frequency gas circulation pump.

[0099] The proportionality between the degree of pressure change and the degree of frequency change can be understood as follows: if the degree of pressure change increases, the degree of frequency change increases; if the degree of pressure change decreases, the degree of frequency change decreases.

[0100] In practical applications, this embodiment of the application utilizes a variable frequency gas circulation pump to control pressure changes by varying the pump's operating frequency. By tracking the pump's operating frequency under corresponding pressure changes, the pressure inside the liquid cooler can be automatically adjusted. This process offers high stability and controllability.

[0101] In one alternative embodiment of this application, the power assembly 104 includes a third gas circulation pump;

[0102] The control component 105 is also used to input the pressure at different time points and the change in gas volume in the liquid cooling tank 103 into the monitoring parameters of the third gas circulation pump, so as to control the running time of the third gas circulation pump.

[0103] It should be noted that the third gas circulation pump can be determined according to actual conditions and is not limited here. As an example, the third gas circulation pump may include a peristaltic pump.

[0104] In the case where the third gas circulation pump may include a peristaltic pump, inputting the pressure at different time points and the change in gas volume in the liquid cooling tank 103 into the monitoring parameters of the third gas circulation pump to control the running time of the third gas circulation pump can be understood as inputting the pressure at different time points and the change in gas volume in the liquid cooling tank 103 into the monitoring parameters of the peristaltic pump to control the running time of the peristaltic pump.

[0105] In this embodiment of the application, in practical applications, the gas change volume calculated by pressure change can be used to automatically control the pump's running time by inputting the values ​​of P2 and ΔV into the peristaltic pump monitoring parameters, which can be expressed as t = ΔV / Q.

[0106] In one optional embodiment of this application, the control component 105 includes a controller 1051; the gravity heat pipe assembly 101 includes a fan 1011 and a gravity heat pipe 1012; the fan 1011 is located on the gravity heat pipe 1012; and the controller is connected to the fan 1011.

[0107] The controller 1051 is also used to control the first switch assembly 106 to be in the conducting state and the fan 1011 to work, so as to start the gravity heat pipe assembly 101 to perform phase change heat transfer.

[0108] The control component 105 includes a controller 1051; the controller 1051 can be determined according to actual conditions and is not limited here. As an example, the controller can be a centralized procurement controller.

[0109] The gravity heat pipe assembly 101 includes a fan 1011 and a gravity heat pipe 1012; in practical applications, the gravity heat pipe 1012 can be simply referred to as a heat pipe.

[0110] The controller is connected to the fan 1011; this connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein, the wired connection can be a wire connection capable of transmitting data; the wireless connection can use short-range communication technology, such as Bluetooth, Zigbee, etc.; or it can use long-range communication technology, such as WiFi, Wireless Fidelity connection.

[0111] The first switching assembly 106 may include an electric ball valve, which controls the first switching assembly 106 to be in the conducting state and the fan 1011 to work, so as to start the gravity heat pipe assembly 101 to perform phase change heat transfer. This can be understood as turning on the electric ball valve, the fan and the gravity heat pipe to perform phase change heat transfer of the gravity heat pipe.

[0112] For ease of understanding, the pressure control device based on a gravity heat pipe is presented here as an example of an optimized pressure control device for a gravity heat pipe phase change liquid cooler. This can be combined with... Figure 3 To understand. In normal mode, the electric ball valve, fan and gravity heat pipe can be turned on to carry out phase change heat transfer of gravity heat pipe, and the pressure sensor is used to monitor the state temperature and pressure changes; in pressure control mode, the electric ball valve can be turned off to control the gas circulation pump to circulate. By collecting the pressure at time point ① and the pressure at time point ②, the previous formula (1) can be derived by using the latent heat of vaporization calculation equation, ideal gas equation and heat exchange calculation equation. When the pressure control is running, the initial state quantities except P2 are all known quantities. When the pressure changes, the output value of P2 can be used to calculate the change in gas volume during the phase change and gas circulation. There are two ways to use a pump or peristaltic pump: a. Use a fixed-frequency gas circulation pump with a fixed flow rate and pipe diameter. The pressure change is adjusted by calculating the pump's running time and controlling its start and stop (low cost); b. Use a variable-frequency pump. The pressure change is controlled by controlling the pump's operating frequency. The pump's operating frequency is tracked under the corresponding pressure change, and the pressure inside the liquid cooler is automatically adjusted (strong stability and controllability); c. The gas change volume calculated from the pressure change can be input into the peristaltic pump monitoring parameters via t=ΔV / Q, where P2 and ΔV values ​​are used to automatically control the pump's running time.

[0113] The pressure control device based on a gravity heat pipe provided in this application includes a gas circulation power component and a first switch component on the first pipeline. The control component controls the first switch component to be in an open state when the sensor component monitors pressure changes at different time points within the liquid-cooled tank. Furthermore, based on the pressure changes at these different time points, the change in gas volume within the liquid-cooled tank is determined, and the power component is controlled to adjust the pressure changes accordingly. This allows for precise control of pressure changes during heat exchange in a phase-change system.

[0114] Based on the aforementioned gravity heat pipe-based pressure control device 100, this application also provides a gravity heat pipe-based pressure control method, applied to the aforementioned gravity heat pipe-based pressure control device 100. Figure 4 This is a schematic diagram illustrating the implementation process of a pressure control method based on a gravity heat pipe according to an embodiment of this application. Figure 4 As shown, the method includes:

[0115] Step S401: When the first switch assembly is in the on state, the gravity heat pipe assembly is started to perform phase change heat transfer, and the pressure in the liquid cooling box at different time points is monitored.

[0116] Step S402: When the pressure changes, control the first switch assembly to be in the off state; determine the change in gas volume in the liquid cooling box based on the pressure at different time points.

[0117] Step S403: Control the operation of the power component according to the change in gas volume inside the liquid cooling box to adjust the pressure change.

[0118] It should be noted that the pressure control device 100 based on the gravity heat pipe is as described above and will not be repeated here.

[0119] In step S401, activating the gravity heat pipe assembly for phase change heat transfer while the first switch assembly is in the ON state can be understood as turning on the first switch assembly and the gravity heat pipe assembly to perform gravity heat transfer phase change heat transfer. As an example, the first switch assembly can be an electric ball valve; the gravity heat pipe assembly can include a fan and a gravity heat pipe. The activation of the first switch assembly and the gravity heat pipe assembly for gravity heat transfer phase change heat transfer can be understood as turning on the electric ball valve, the fan, and the gravity heat pipe to perform gravity heat transfer phase change heat transfer.

[0120] The pressure inside the liquid cooling tank at different time points is monitored; wherein, the different time points can be determined according to the actual situation and are not limited here. As an example, the different time points may at least include a first time point and a second time point, and monitoring the pressure inside the liquid cooling tank at different time points can be understood as monitoring the first pressure at the first time point and the second pressure at the second time point.

[0121] In step S402, controlling the first switch assembly to be in an open state when the pressure changes can be understood as turning off the first switch assembly when the pressure changes.

[0122] The specific determination process for determining the change in gas volume within the liquid cooling tank based on the pressure at different time points can be determined according to actual conditions and is not limited here. As an example, the different time points may include at least a first time point and a second time point. Determining the change in gas volume within the liquid cooling tank based on the pressure at the different time points can be done by determining the change in gas volume within the liquid cooling tank based on the values ​​of the first pressure and the second pressure. The determination of the change in gas volume within the liquid cooling tank based on the values ​​of the first pressure and the second pressure can be done by determining the change in gas volume within the liquid cooling tank based on the values ​​of the first pressure and the second pressure using a preset algorithm. The preset algorithm can be determined according to actual conditions and is not limited here. As an example, the preset algorithm can refer to the previous formula (1). In formula (1), all initial state quantities except P2 are known quantities. When the pressure changes, the change in gas volume during the phase change process can be calculated. That is, the change in gas volume within the liquid cooling tank is determined based on the pressure at the different time points.

[0123] In step S403, the power assembly may include a gas circulation pump; controlling the operation of the power assembly according to the change in gas volume in the liquid cooling tank to adjust the pressure change can be understood as controlling the operation of the gas circulation pump according to the change in gas volume in the liquid cooling tank to adjust the pressure change.

[0124] In one optional embodiment of this application, monitoring the pressure at different time points inside the liquid cooling tank includes:

[0125] Monitor the first pressure at a first time point and the second pressure at a second time point inside the liquid cooling tank;

[0126] Correspondingly, controlling the first switching assembly to be in an open state when the pressure changes includes:

[0127] When the values ​​of the first pressure and the second pressure are different, the electric ball valve is controlled to be in the off state;

[0128] Correspondingly, determining the change in gas volume within the liquid cooling tank based on the pressure at different time points includes:

[0129] The change in gas volume inside the liquid cooling box is determined based on the values ​​of the first pressure and the second pressure.

[0130] It should be noted that the monitoring involves a first pressure at a first time point and a second pressure at a second time point within the liquid cooling tank. Both the first and second time points can be determined based on actual conditions and are not limited here. As an example, the first time point can be denoted as time point ○1 or time point 1; the second time point can be denoted as time point ② or time point 2. The first pressure can be denoted as P1; the second pressure can be denoted as P2.

[0131] When the values ​​of the first pressure and the second pressure are different, controlling the electric ball valve to be in the off state can be understood as closing the electric ball valve when the values ​​of the first pressure and the second pressure are different.

[0132] The specific process for determining the change in gas volume within the liquid cooling tank based on the values ​​of the first pressure and the second pressure can be determined according to actual circumstances and is not limited here. As an example, determining the change in gas volume within the liquid cooling tank based on the values ​​of the first pressure and the second pressure can be achieved by using a preset algorithm to determine the change in gas volume within the liquid cooling tank based on the values ​​of the first pressure and the second pressure; wherein, the preset algorithm can be determined according to actual circumstances and is not limited here. As an example, the preset algorithm can refer to the preceding formula (1).

[0133] In one optional embodiment of this application, controlling the operation of the power component based on the change in gas volume within the liquid-cooled tank includes:

[0134] Obtain the pipe diameter and flow rate parameters of the first gas circulation pump;

[0135] The flow rate of the first gas circulation pump is determined based on the pipe diameter parameter and the flow rate parameter.

[0136] The running time of the first gas circulation pump is determined based on the change in gas volume inside the liquid cooling box and the flow rate of the first gas circulation pump.

[0137] The start and stop of the first gas circulation pump are controlled based on the running time.

[0138] It should be noted that the frequency of the first gas circulation pump remains constant. The first gas circulation pump can be understood as a fixed-frequency gas circulation pump.

[0139] Obtain the pipe diameter and flow rate parameters of the first gas circulation pump. The pipe diameter and flow rate parameters can be determined according to the actual situation and are not limited here.

[0140] Determining the flow rate of the first gas circulation pump based on the pipe diameter parameter and the flow rate parameter can be understood as calculating the flow rate of the first gas circulation pump based on the pipe diameter parameter and the flow rate parameter. In practical applications, a fixed-frequency gas circulation pump with a fixed flow rate and a fixed pipe diameter can be used to calculate the flow rate of the first gas circulation pump.

[0141] Determining the operating time of the first gas circulation pump based on the change in gas volume inside the liquid cooling tank and the flow rate of the first gas circulation pump can be understood as dividing the change in gas volume inside the liquid cooling tank by the flow rate of the first gas circulation pump, thereby calculating the operating time of the first gas circulation pump.

[0142] Controlling the start and stop of the first gas circulation pump based on the running time can be understood as controlling the start and stop of the first gas circulation pump so that the first gas circulation pump operates within the running time.

[0143] In this embodiment, in practical applications, a fixed-frequency gas circulation pump with a fixed flow rate and pipe diameter can be used. The pressure change is adjusted by calculating the pump's operating time and controlling its start and stop. This control process is low-cost.

[0144] In one optional embodiment of this application, the method further includes:

[0145] The operating frequency of the second gas circulation pump is controlled according to the pressure change; the degree of pressure change is proportional to the degree of frequency change.

[0146] It should be noted that the frequency of the second gas circulation pump changes, and the second gas circulation pump can be understood as a variable frequency gas circulation pump.

[0147] The proportionality between the degree of pressure change and the degree of frequency change can be understood as follows: if the degree of pressure change increases, the degree of frequency change increases; if the degree of pressure change decreases, the degree of frequency change decreases.

[0148] In practical applications, this embodiment of the application utilizes a variable frequency gas circulation pump to control pressure changes by varying the pump's operating frequency. By tracking the pump's operating frequency under corresponding pressure changes, the pressure inside the liquid cooler can be automatically adjusted. This process offers high stability and controllability.

[0149] In one optional embodiment of this application, controlling the operation of the power component based on the change in gas volume within the liquid-cooled tank includes:

[0150] The pressure at different time points and the change in gas volume in the liquid cooling tank are input into the monitoring parameters of the third gas circulation pump to control the operating time of the third gas circulation pump.

[0151] It should be noted that the third gas circulation pump can be determined according to actual conditions and is not limited here. As an example, the third gas circulation pump may include a peristaltic pump.

[0152] In the case where the third gas circulation pump may include a peristaltic pump, inputting the pressure at different time points and the change in gas volume in the liquid cooling tank into the monitoring parameters of the third gas circulation pump to control the running time of the third gas circulation pump can be understood as inputting the pressure at different time points and the change in gas volume in the liquid cooling tank into the monitoring parameters of the peristaltic pump to control the running time of the peristaltic pump.

[0153] In this embodiment of the application, in practical applications, the gas change volume calculated by pressure change can be used to automatically control the pump's running time by inputting the peristaltic pump monitoring parameters t=ΔV / Q, P2, and ΔV values.

[0154] The detailed process of the pressure control method based on gravity heat pipe in this application can be understood in conjunction with the previous description of the pressure control device based on gravity heat pipe, and will not be repeated here.

[0155] This application also provides a liquid-cooled data center, which includes the apparatus described in any of the above embodiments.

[0156] The detailed process of the liquid-cooled data center in this application can be understood in conjunction with the aforementioned pressure control device based on gravity heat pipes, and will not be repeated here.

[0157] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the above-described method embodiments.

[0158] This application also provides a computer-readable medium storing a computer program thereon. When the computer program is executed by a processor, it implements the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0159] If the method steps in the above-described system of this application are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, essentially or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks. Thus, this application is not limited to any specific hardware and software combination.

[0160] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0161] The methods disclosed in the embodiments of this application can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in memory. The processor reads information from the memory and, in conjunction with its hardware, completes the steps of the aforementioned method.

[0162] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A gravity heat pipe based pressure control device, characterized in that, The device comprises a gravity heat pipe assembly, a liquid cooling tank provided with a sensor assembly, a power assembly for gas circulation, and a control assembly; one end of the liquid cooling tank is connected to one end of the gravity heat pipe assembly through a first pipeline; a first switch assembly is arranged on the first pipeline; the power assembly is connected in parallel to the first switch assembly; the other end of the liquid cooling tank is connected to the other end of the gravity heat pipe assembly through a second pipeline; the control assembly is connected to the gravity heat pipe assembly, the sensor assembly, and the power assembly respectively; The sensor assembly is used for monitoring the pressure at different time points in the liquid cooling tank. In the conventional mode, the gravity heat pipe assembly is started for phase change heat transfer when the first switch assembly is in the on state. The control assembly is used for controlling the first switch assembly to be in the off state in the pressure control mode when the pressure changes; determining the change amount of the gas volume in the liquid cooling tank based on the pressure at different time points; and controlling the power assembly to work according to the change amount of the gas volume in the liquid cooling tank to adjust the change of the pressure.

2. The apparatus of claim 1, wherein, The sensor assembly comprises a pressure sensor; and the first switch assembly comprises an electric ball valve. The pressure sensor is used for monitoring the first pressure at a first time point and the second pressure at a second time point in the liquid cooling tank. The control assembly is further used for controlling the electric ball valve to be in the off state when the value of the first pressure is different from the value of the second pressure. And determining the change amount of the gas volume in the liquid cooling tank based on the value of the first pressure and the value of the second pressure.

3. The apparatus of claim 1, wherein, The power assembly comprises a first gas circulation pump with an unchanged frequency. The control assembly is further used for obtaining the pipe diameter parameter and the flow parameter of the first gas circulation pump, determining the flow rate of the first gas circulation pump based on the pipe diameter parameter and the flow parameter, and determining the running time of the first gas circulation pump according to the change amount of the gas volume in the liquid cooling tank and the flow rate of the first gas circulation pump. The control assembly is further used for controlling the start and stop of the first gas circulation pump based on the running time.

4. The apparatus of claim 1, wherein, The power assembly comprises a second gas circulation pump with a changed frequency. The control assembly is further used for controlling the change of the running frequency of the second gas circulation pump according to the change of the pressure; and the change degree of the pressure is proportional to the change degree of the frequency.

5. The apparatus of claim 1, wherein, The power assembly comprises a third gas circulation pump. The control assembly is further used for inputting the pressure at different time points and the change amount of the gas volume in the liquid cooling tank into the monitoring parameters of the third gas circulation pump to control the running time of the third gas circulation pump.

6. A method of pressure control based on a gravity heat pipe, characterized by, The method is applied to the gravity heat pipe-based pressure control device in any one of claims 1 to 5; the method comprises: starting the gravity heat pipe assembly for phase change heat transfer when the first switch assembly is in the on state, and monitoring the pressure at different time points in the liquid cooling tank; controlling the first switch assembly to be in the off state when the pressure changes; and determining the change amount of the gas volume in the liquid cooling tank based on the pressure at different time points. According to the change amount of the gas volume in the liquid cooling tank, the power assembly is controlled to work, so as to adjust the change of the pressure.

7. The method of claim 6, wherein, The pressure at different time points in the liquid cooling tank is monitored, including: The first pressure at the first time point and the second pressure at the second time point in the liquid cooling tank are monitored; Correspondingly, in the case that the pressure changes, the first switch assembly is controlled to be in the off state, including: In the case that the value of the first pressure and the value of the second pressure are different, the electric ball valve is controlled to be in the off state; Correspondingly, based on the pressure at different time points, the change amount of the gas volume in the liquid cooling tank is determined, including: Based on the value of the first pressure and the value of the second pressure, the change amount of the gas volume in the liquid cooling tank is determined.

8. The method of claim 6, wherein, The power assembly includes a first gas circulating pump with unchanged frequency, and according to the change amount of the gas volume in the liquid cooling tank, the power assembly is controlled to work, including: The pipe diameter parameter and the flow parameter of the first gas circulating pump are obtained; Based on the pipe diameter parameter and the flow parameter, the flow rate of the first gas circulating pump is determined; According to the change amount of the gas volume in the liquid cooling tank and the flow rate of the first gas circulating pump, the running time of the first gas circulating pump is determined; Based on the running time, the start and stop of the first gas circulating pump are controlled.

9. The method of claim 6, wherein, The power assembly includes a second gas circulating pump with changed frequency, and the method further includes: According to the change of the pressure, the change of the running frequency of the second gas circulating pump is controlled; the degree of change of the pressure is proportional to the degree of change of the frequency.

10. The method of claim 6, wherein, The power assembly includes a third gas circulating pump, and according to the change amount of the gas volume in the liquid cooling tank, the power assembly is controlled to work, including: The pressure at different time points and the change amount of the gas volume in the liquid cooling tank are input into the monitoring parameters of the third gas circulating pump, so as to control the running time of the third gas circulating pump.

11. A liquid-cooled data center, characterized by, The liquid cooling data center includes the device of any one of claims 1-5.

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