Pressure and temperature control method and device of gravity assisted heat pipe and liquid cooling data center of gravity assisted heat pipe

Abstract

The invention discloses a pressure and temperature control method and device based on a gravity assisted heat pipe and a liquid cooling data center thereof. The method is applied to a control device comprising a pressure mode and a temperature mode. The method comprises the following steps: in a temperature mode operation process, obtaining a first temperature in a liquid cooling box in the control device in real time; judging a range in which the first temperature deviates from a target temperature within a first preset time to obtain a first judgment result; based on the first judgment result, it is determined that the control device keeps the temperature mode or is switched into the pressure mode; under the condition that the control device keeps the temperature mode or is switched into the pressure mode, collecting a first pressure and a second temperature in a liquid cooling box in the control device in real time; determining a control mode of the control device based on the first pressure and the second temperature; the control mode comprises the temperature mode and / or the pressure mode.

Description

Technical Field

[0001] The present application relates to the field of control technology, and in particular to a pressure and temperature control method and device based on a gravity heat pipe and a liquid cooling data center thereof. Background Art

[0002] Gravity heat pipe circulation - heat conversion is unstable, and the pressure and / or temperature of the heat exchange of the phase change system cannot be accurately controlled; when the pressure and / or temperature can be controlled, the degree to which the filling rate is affected will be reduced. There is currently no effective solution to this problem. Summary of the invention

[0003] In view of this, the embodiments of the present application hope to provide a pressure and temperature control method and device based on a gravity heat pipe and a liquid-cooled data center thereof.

[0004] The technical embodiment of the embodiment of the present application is implemented as follows:

[0005] The embodiment of the present application provides a pressure and temperature control method based on a gravity heat pipe, which is applied to a control device including a pressure mode and a temperature mode; the method includes:

[0006] During the operation of the temperature mode, obtaining in real time a first temperature in a liquid cooling box in the control device;

[0007] Determine within a first preset time period that the first temperature deviates from a target temperature, and obtain a first determination result;

[0008] Determining, based on the first judgment result, that the control device maintains the temperature mode or switches to the pressure mode;

[0009] When the control device maintains the temperature mode or switches to the pressure mode, collecting the first pressure and the second temperature in the liquid cooling box in the control device in real time;

[0010] A control mode of the control device is determined based on the first pressure and the second temperature; the control mode includes the temperature mode and / or the pressure mode.

[0011] In the above solution, determining that the control device maintains the temperature mode or switches to the pressure mode based on the first judgment result includes:

[0012] When the first judgment result indicates that the first temperature deviates from the target temperature to a large extent, determining that the control device is switched from the temperature mode to the pressure mode;

[0013] When the first judgment result indicates that the first temperature deviates from the target temperature by a small degree, it is determined that the control device maintains the temperature mode.

[0014] In the above scheme, the control mode includes a first control mode and a second control mode; the first control mode includes the temperature mode or the pressure mode; the second control mode includes the temperature mode and / or the pressure mode; the control mode of the control device determined based on the first pressure and the second temperature includes:

[0015] determining the first control mode of the control device according to the first pressure and the second temperature;

[0016] Re-collecting the first pressure and the second temperature in the liquid cooling box in the control device in real time according to the first control mode;

[0017] The second control mode of the control device is determined based on the first control mode, the re-collected first pressure, and the re-collected second temperature.

[0018] In the above solution, determining the first control mode of the control device according to the first pressure and the second temperature includes:

[0019] Obtaining the initial volume of gas in the liquid cooling box in the control device;

[0020] determining a first volume change of gas in a liquid cooling box in the control device based on the initial volume, the first pressure and the second temperature;

[0021] Determine a first change in the first pressure and a second pressure after the change and a second change in the second temperature and a third temperature after the change within a second preset time;

[0022] When the first volume change, the first change, the second pressure, the second change and the third temperature meet a first preset condition, determining that the control mode of the control device is the pressure mode;

[0023] When the first volume change, the first change, the second pressure, the second change and the third temperature satisfy a second preset condition, the control mode of the control device is determined to be the temperature mode.

[0024] In the above solution, determining the second control mode of the control device based on the first control mode, the re-collected first pressure, and the re-collected second temperature includes:

[0025] When the first control mode is the pressure mode, determining a second volume change in the liquid cooling box and a third change in the second temperature within two consecutive time periods based on the re-collected first pressure and the re-collected second temperature;

[0026] When the second volume change and the third volume change satisfy a third preset condition, determining that the second control mode is the temperature mode and the pressure mode;

[0027] When the second volume change and the third volume change satisfy a fourth preset condition, the second control mode is determined to be the pressure mode.

[0028] In the above solution, determining the second control mode of the control device based on the first control mode, the re-collected first pressure, and the re-collected second temperature includes:

[0029] When the first control mode is the temperature mode, determining a third volume change in the liquid cooling box and a fourth change in the first pressure within a third time period based on the re-collected first pressure and the re-collected second temperature;

[0030] When the third volume change, the fourth volume change and the first pressure satisfy a fifth preset condition, determining that the second control mode is the pressure mode;

[0031] When the third volume change, the fourth volume change, and the first pressure satisfy a sixth preset condition, the second control mode is determined to be the temperature mode.

[0032] In the above solution, when the first temperature is close to the target temperature within the first preset time, the method further includes:

[0033] Determining the number of times the control mode of the control device is switched within the first preset time;

[0034] When the switching number is greater than or equal to a preset threshold, it is determined to interrupt the switching of the control mode of the control device.

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

[0036] In the case where there is a fault in the temperature mode, determining that the control mode of the control device is a pressure mode;

[0037] In the case that there is a fault in the pressure mode, the control mode of the control device is determined to be a temperature mode.

[0038] The embodiment of the present application provides a pressure and temperature control device based on a gravity heat pipe, the device comprising: a gravity heat pipe assembly and a liquid cooling box provided with a sensor assembly, a power assembly for gas circulation, and a control assembly; one end of the liquid cooling box is connected to one end of the gravity heat pipe assembly through a first pipeline; the other end of the liquid cooling box is connected to the other end of the gravity heat pipe assembly through a second pipeline; a first switch assembly is provided on the first pipeline; the power assembly is connected in parallel to the first switch assembly; an electronic expansion valve is provided on the second pipeline; the electronic expansion valve is connected to the sensor assembly; the control assembly is respectively connected to the gravity heat pipe assembly, the sensor assembly, and the power assembly;

[0039] The sensor assembly is used to collect a first temperature value in the liquid cooling box and to start the gravity heat pipe assembly to perform phase change heat transfer when the first switch assembly is in an on state, and to monitor the pressure in the liquid cooling box at different time points;

[0040] The electronic expansion valve is used to control its own valve to open wider when the temperature value is greater than the temperature setting value, thereby increasing the flow rate between the gravity heat pipe assembly and the liquid cooling box; and to control its own valve to open narrower when the temperature value is less than or equal to the temperature setting value, thereby decreasing the flow rate between the gravity heat pipe assembly and the liquid cooling box;

[0041] The control component is used to control the first switch component to be in an off state when the pressure changes; and determine the change in the volume of the gas in the liquid cooling box based on the pressure at different time points, and control the operation of the power component according to the change in the volume of the gas in the liquid cooling box to adjust the pressure change.

[0042] In the above solution, the sensor assembly includes a temperature sensor and a pressure sensor; the first switch assembly includes an electric ball valve;

[0043] The temperature sensor is used to collect the first temperature value in the liquid cooling box;

[0044] The pressure sensor is used to monitor a first pressure at a first time point and a second pressure at a second time point in the liquid cooling box;

[0045] The control component is also used to control the electric ball valve to be in a disconnected state when the value of the first pressure is different from the value of the second pressure; and to determine the change in the volume of the gas in the liquid cooling box based on the value of the first pressure and the value of the second pressure.

[0046] An embodiment of the present application provides a liquid-cooled data center, which includes any of the above-mentioned devices.

[0047] The embodiment of the present application provides a pressure and temperature control device based on a gravity heat pipe, comprising:

[0048] A memory for storing executable instructions;

[0049] The processor is used to implement any step of the above-mentioned method when executing the executable instructions stored in the memory.

[0050] An embodiment of the present application provides a computer program product, including a computer program, which implements any step of the above-mentioned method when executed by a processor.

[0051] An embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, any step of the above-described method is implemented.

[0052] The embodiment of the present application provides a pressure and temperature control method, device and liquid cooling data center based on gravity heat pipe, the method is applied to a control device including a pressure mode and a temperature mode; the method includes: during the operation of the temperature mode, the first temperature in the liquid cooling box in the control device is obtained in real time; within the first preset time, the range of the first temperature deviation from the target temperature is judged to obtain a first judgment result; based on the first judgment result, it is determined that the control device maintains the temperature mode or switches to the pressure mode; when the control device maintains the temperature mode or switches to the pressure mode, the first pressure and second temperature in the liquid cooling box in the control device are collected in real time; based on the first pressure and the second temperature, the control mode of the control device is determined; the control mode includes the temperature mode and / or the pressure mode. The technical solution of the embodiment of the present application is adopted, during the operation of the temperature mode, the first temperature in the liquid cooling box is obtained in real time; within the first preset time, the range of the first temperature deviation from the target temperature is judged, and then the control device is determined to maintain the temperature mode or switch to the pressure mode; then the first pressure and second temperature in the liquid cooling box in the control device are collected in real time; based on the first pressure and the second temperature, the control mode including the temperature mode and / or the pressure mode is determined; the temperature and pressure in the heat exchange of the phase change system are accurately controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a schematic diagram of a flow chart of a method for controlling pressure and temperature based on a gravity heat pipe according to an embodiment of the present application;

[0054] Figure 2 A schematic diagram of an application scenario for a pressure and temperature control method based on a gravity heat pipe;

[0055] Figure 3A schematic diagram of another application scenario implemented by a pressure and temperature control method based on a gravity heat pipe;

[0056] Figure 4 A schematic diagram of another application scenario implemented by a pressure and temperature control method based on a gravity heat pipe;

[0057] Figure 5 This is a schematic structural diagram of a pressure and temperature control device based on a gravity heat pipe according to an embodiment of the present application;

[0058] Figure 6 This is a structural schematic diagram of another pressure and temperature control device based on a gravity heat pipe according to an embodiment of the present application;

[0059] Figure 7 This is a structural schematic diagram of another pressure and temperature control device based on a gravity heat pipe according to an embodiment of the present application;

[0060] Figure 8 This is a schematic diagram of the structure of a pressure and temperature control device based on a gravity heat pipe according to an embodiment of the present application. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the invention will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0062] In the heat exchange process of gravity heat pipe, low pressure and low boiling point are required, and the low boiling point is conducive to phase change nucleate boiling heat exchange of the coolant.

[0063] Conventional gravity heat pipe heat exchange usually occurs in the evaporation section, insulation section, and condensation section; the heat pipe heat exchange efficiency and energy efficiency are high by utilizing structural characteristics such as pressure difference, gravity difference, and metal sponge in the inner layer of the heat pipe.

[0064] On the one hand, since gravity heat pipes generally have a symmetrical structure, the existence of an inclination angle is more conducive to the gravity reflux of the refrigerant, but it will destroy the symmetry of the internal flow and thus affect the heat transfer characteristics.

[0065] On the other hand, in the finite gravity heat pipe-liquid cooling box, single-phase natural convection, two-phase natural convection, liquid pool nucleate boiling, evaporation and condensation and other processes exist simultaneously. The gravity heat pipe cycle-heat conversion is unstable, and the heat exchange and temperature changes of the phase change system cannot be accurately controlled.

[0066] In practical applications, the filling rate = the volume of the charged refrigerant / the total volume of the gravity heat pipe. During the natural gravity phase change process, if the filling rate is too small, the pipe wall will heat up, the liquid pool will dry up, and the temperature and pressure will fluctuate greatly. If the filling rate is too large, it will easily cause the liquid-cooled phase change medium to enter the insulation section or even the condensation section, resulting in a decrease in the heat exchange effect. When the temperature and pressure changes can be controlled, the degree to which the filling rate is affected will be reduced.

[0067] Based on this, this embodiment proposes a pressure and temperature control method based on gravity heat pipes. The method can be applied to pressure and temperature control devices based on gravity heat pipes. The functions implemented by the method can be implemented by calling program codes by a processor in the pressure and temperature control device based on gravity heat pipes. Of course, the program codes can be stored in the memory of the processing device. It can be seen that the processing device at least includes a processor and a memory.

[0068] Figure 1 This is a schematic diagram of a flow chart of a pressure and temperature control method based on a gravity heat pipe according to an embodiment of the present application, which is applied to a control device including a pressure mode and a temperature mode; Figure 1 As shown, the method includes:

[0069] Step S101: During the operation of the temperature mode, a first temperature in the liquid cooling box of the control device is obtained in real time.

[0070] Step S102: determining within a first preset time period whether the first temperature deviates from the target temperature, and obtaining a first determination result.

[0071] Step S103: determining whether the control device maintains the temperature mode or switches to the pressure mode based on the first judgment result.

[0072] Step S104: When the control device maintains the temperature mode or switches to the pressure mode, the first pressure and the second temperature in the liquid cooling box in the control device are collected in real time.

[0073] Step S105: determining a control mode of the control device based on the first pressure and the second temperature; the control mode includes the temperature mode and / or the pressure mode.

[0074] It should be noted that the gravity heat pipe can be any gravity heat pipe and is not limited here. In practical applications, the gravity heat pipe can be simply referred to as a heat pipe.

[0075] The pressure and temperature control method based on the gravity heat pipe can be understood as temperature and pressure combined control.

[0076] The control device including the pressure mode and the temperature mode can be determined according to actual conditions and is not limited here. As an example, the device includes: a gravity heat pipe assembly and a liquid cooling box equipped with a sensor assembly, a gas circulation power assembly and a control assembly; one end of the liquid cooling box is connected to one end of the gravity heat pipe assembly through a first pipeline; the other end of the liquid cooling box is connected to the other end of the gravity heat pipe assembly through a second pipeline; a first switch assembly is arranged on the first pipeline; the power assembly is connected in parallel to the first switch assembly; an electronic expansion valve is arranged on the second pipeline; the electronic expansion valve is connected to the sensor assembly; the control assembly is respectively connected to the gravity heat pipe assembly, the sensor assembly and the power assembly; the sensor assembly is used to collect the first temperature value in the liquid cooling box and 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; the electronic expansion valve is used to control its own valve to open wider when the temperature value is greater than the temperature setting value, so as to increase the flow rate between the gravity heat pipe assembly and the liquid cooling box; and to control its own valve to open narrower when the temperature value is less than or equal to the temperature setting value, so as to reduce the flow rate between the gravity heat pipe assembly and the liquid cooling box; the control component is used to control the first switch component to be in an off state when the pressure changes; and to determine the change in the volume of the gas in the liquid cooling box based on the pressure at different time points, and control the operation of the power component according to the change in the volume of the gas in the liquid cooling box to adjust the change in pressure.

[0077] In step S101, the temperature mode operation can be understood as temperature mode control, mainly considering that the temperature mode operation has better energy efficiency.

[0078] The real-time acquisition of the first temperature in the liquid cooling box in the control device can be understood as real-time acquisition of the first temperature in the liquid cooling box in the control device.

[0079] In step S102, the first preset time can be determined according to actual conditions and is not limited here. As an example, the first preset time can be 30 seconds, 2 minutes, or 3 minutes.

[0080] The target temperature can be determined according to actual conditions and is not limited here. As an example, the target temperature can be understood as a temperature setting value. In practical applications, the temperature setting value can be referred to as a setting value.

[0081] The specific judgment process in the first judgment result of judging the range of the first temperature deviating from the target temperature within the first preset time and obtaining the first judgment result can be determined according to actual conditions, and is not limited here. As an example, judging the range of the first temperature deviating from the target temperature within the first preset time and obtaining the first judgment result can be judging the range of the first temperature deviating from the target temperature within the first preset time and obtaining a first judgment result characterizing that the first temperature deviates from the target temperature to a large extent or characterizing that the first temperature deviates from the target temperature to a small extent. Among them, the characterizing that the first temperature deviates from the target temperature to a large extent or the characterizing that the first temperature deviates from the target temperature to a small extent can be determined according to actual conditions, and is not limited here. As an example, the characterizing that the first temperature deviates from the target temperature to a large extent can be characterizing that the first temperature deviates from the target temperature to a greater extent than or equal to 3 degrees; the characterizing that the first temperature deviates from the target temperature to a small extent can be characterizing that the first temperature deviates from the target temperature to a less extent than 3 degrees.

[0082] In practical applications, as an example, within 30 seconds, the range degree of deviation of the first temperature from the target temperature exceeds 3 degrees on both sides, which can be understood as indicating that the first temperature deviates from the target temperature to a large extent, and the range degree of deviation of the first temperature from the target temperature exceeds 3 degrees on both sides, which can be recorded as >3°<, 30 seconds. Within 3 minutes, the range degree of deviation of the first temperature from the target temperature exceeds 1 degree on both sides, which can be understood as indicating that the first temperature deviates from the target temperature to a small extent, and the range degree of deviation of the first temperature from the target temperature exceeds 1 degree on both sides, which can be recorded as >1<, 3 minutes. Within 2 minutes, the range degree of deviation of the first temperature from the target temperature exceeds 2 degrees on both sides, which can be understood as indicating that the first temperature deviates from the target temperature to a small extent, and the range degree of deviation of the first temperature from the target temperature exceeds 2 degrees on both sides, which can be recorded as >2<, 2 minutes.

[0083] In step S103, the specific determination process of determining whether the control device maintains the temperature mode or switches to the pressure mode based on the first judgment result can be determined according to actual conditions and is not limited here. As an example, determining whether the control device maintains the temperature mode or switches to the pressure mode based on the first judgment result may include: when the first judgment result indicates that the first temperature deviates from the target temperature to a large extent, determining that the control device switches from the temperature mode to the pressure mode; when the first judgment result indicates that the first temperature deviates from the target temperature to a small extent, determining that the control device maintains the temperature mode.

[0084] In step S104, the control mode includes the temperature mode and / or the pressure mode, which can be understood as the control mode includes the temperature mode and the pressure mode; the control mode includes the temperature mode; the control mode includes the pressure mode.

[0085] The specific determination process in determining the control mode of the control device based on the first pressure and the second temperature can be determined according to actual conditions and is not limited here. As an example, the control mode includes a first control mode and a second control mode; the first control mode includes the temperature mode or the pressure mode; the second control mode includes the temperature mode and / or the pressure mode; the control mode of the control device determined based on the first pressure and the second temperature may include determining the first control mode of the control device according to the first pressure and the second temperature; re-collecting the first pressure and the second temperature in the liquid cooling box of the control device in real time according to the first control mode; and determining the second control mode of the control device based on the first control mode, the re-collected first pressure, and the re-collected second temperature.

[0086] In this embodiment, during the operation of the temperature mode, the first temperature in the liquid cooling box is obtained in real time; the range in which the first temperature deviates from the target temperature is determined within the first preset time, and then the control device is determined to maintain the temperature mode or switch to the pressure mode; the first pressure and the second temperature in the liquid cooling box in the control device are then collected in real time; based on the first pressure and the second temperature, a control method including a temperature mode and / or a pressure mode is determined; and the temperature and pressure in the heat exchange of the phase change system are accurately controlled.

[0087] In an optional embodiment of the present application, determining, based on the first judgment result, that the control device maintains the temperature mode or switches to the pressure mode includes:

[0088] When the first judgment result indicates that the first temperature deviates from the target temperature to a large extent, determining that the control device is switched from the temperature mode to the pressure mode;

[0089] When the first judgment result indicates that the first temperature deviates from the target temperature by a small degree, it is determined that the control device maintains the temperature mode.

[0090] In this embodiment, the range degree of the first temperature deviation from the target temperature is large or the range degree of the first temperature deviation from the target temperature is small can be determined according to actual conditions, and is not limited here. As an example, the range degree of the first temperature deviation from the target temperature is large can be greater than or equal to 3 degrees; the range degree of the first temperature deviation from the target temperature is small can be less than 3 degrees.

[0091] In practical applications, as an example, within 30 seconds, if the first temperature deviates from the target temperature by more than 3 degrees on both sides, it can be understood that the first temperature deviates from the target temperature by a large degree, and the first temperature deviates from the target temperature by more than 3 degrees on both sides, which can be recorded as >3°<, 30 seconds, that is, the first judgment result represents >3°<, 30 seconds, and it is determined that the control device switches from the temperature mode to the pressure mode, which can also be understood as opening the pressure control from the temperature mode. Within 3 minutes, if the first temperature deviates from the target temperature by more than 1 degree on both sides, it can be understood that the first temperature deviates from the target temperature by a small degree, and the first temperature deviates from the target temperature by more than 1 degree on both sides, which can be recorded as >1<, 3 minutes. Within 2 minutes, the first temperature deviates from the target temperature by more than 2 degrees on both sides, which can be understood as indicating that the first temperature deviates from the target temperature to a small extent. The first temperature deviates from the target temperature by more than 2 degrees on both sides, which can be recorded as >2<, 2 minutes, that is, in the first judgment result, it is represented by >1<, 3 minutes, or >2<, 2 minutes, determining that the control device maintains the temperature mode, which can also be understood as entering the temperature mode by maintaining the temperature mode.

[0092] In an optional embodiment of the present application, the control mode includes a first control mode and a second control mode; the first control mode includes the temperature mode or the pressure mode; the second control mode includes the temperature mode and / or the pressure mode; the control mode of the control device determined based on the first pressure and the second temperature includes:

[0093] determining the first control mode of the control device according to the first pressure and the second temperature;

[0094] Re-collecting the first pressure and the second temperature in the liquid cooling box in the control device in real time according to the first control mode;

[0095] The second control mode of the control device is determined based on the first control mode, the re-collected first pressure, and the re-collected second temperature.

[0096] In this embodiment, the specific determination process in determining the first control mode of the control device according to the first pressure and the second temperature can be determined according to actual conditions and is not limited here. As an example, determining the first control mode of the control device according to the first pressure and the second temperature may include obtaining the initial volume of the gas in the liquid cooling box in the control device; determining the first volume change of the gas in the liquid cooling box in the control device based on the initial volume, the first pressure and the second temperature; determining the first change of the first pressure and the second change of the second temperature and the third temperature after the change within the second preset time; when the first volume change, the first change, the second pressure, the second change and the third temperature meet the first preset condition, determining the control mode of the control device to be the pressure mode; when the first volume change, the first change, the second pressure, the second change and the third temperature meet the second preset condition, determining the control mode of the control device to be the temperature mode.

[0097] Re-collecting the first pressure and second temperature in the liquid cooling box in the control device in real time according to the first control mode can be understood as the control mode of the control device being the pressure mode or the temperature mode to re-collect the first pressure and second temperature in the liquid cooling box in the control device in real time.

[0098] The specific determination process of determining the second control mode of the control device based on the first control mode, the re-collected first pressure and the re-collected second temperature can be determined according to actual conditions and is not limited here. As an example, the determination of the second control mode of the control device based on the first control mode, the re-collected first pressure and the re-collected second temperature may include, when the first control mode is the pressure mode, determining the second volume change in the liquid cooling box and the third change of the second temperature in two consecutive time periods based on the re-collected first pressure and the re-collected second temperature; when the second volume change and the third change meet the third preset condition, determining that the second control mode is the temperature mode and the pressure mode; when the second volume change and the third change meet the fourth preset condition, determining that the second control mode is the pressure mode.

[0099] In an optional embodiment of the present application, determining the first control mode of the control device according to the first pressure and the second temperature includes:

[0100] Obtaining the initial volume of gas in the liquid cooling box in the control device;

[0101] determining a first volume change of gas in a liquid cooling box in the control device based on the initial volume, the first pressure and the second temperature;

[0102] Determine a first change in the first pressure and a second pressure after the change and a second change in the second temperature and a third temperature after the change within a second preset time;

[0103] When the first volume change, the first change, the second pressure, the second change and the third temperature meet a first preset condition, determining that the control mode of the control device is the pressure mode;

[0104] When the first volume change, the first change, the second pressure, the second change and the third temperature satisfy a second preset condition, the control mode of the control device is determined to be the temperature mode.

[0105] In this embodiment, the initial volume, the first pressure, the second temperature and the first volume change can all be determined based on actual conditions and are not limited here. As an example, the initial volume can be recorded as V1; the first pressure can be recorded as P1; the second pressure can be recorded as P2; and the first volume change can be recorded as ΔV.

[0106] The specific determination process of determining the first volume change of the gas in the liquid cooling box in the control device based on the initial volume, the first pressure and the second temperature can be determined according to actual conditions, and is not limited here. As an example, the first volume change of the gas in the liquid cooling box in the control device based on the initial volume, the first pressure and the second temperature can refer to the following formula (1):

[0107]

[0108] In formula (1), ΔV is the increased gas volume caused by the phase change of the cooling medium, in L;

[0109] P1: collection time point 1, the pressure in the immersion tank, unit kap;

[0110] V1: the volume of gas in the immersion cabinet at the sampling time point 1, in L;

[0111] n: amount of substance, unit: moL;

[0112] R: universal gas constant, 8.31 J / (mol·K);

[0113] r: the heat absorbed by a unit mass of a substance during vaporization, in J / kg;

[0114] c: specific heat capacity of cooling medium, unit: kJ / kg·K;

[0115] P2: collection time point 2, the pressure in the immersion tank, unit kap;

[0116] In formula (1), the initial state quantities except P2 are all known quantities, and when the pressure changes, the change in gas volume during the phase change process can be calculated. That is, the change in gas volume in the liquid cooling box is determined based on the pressure at different time points.

[0117] The first volume change, the first change, the second pressure, the second change and the third temperature can all be determined based on actual conditions and are not limited here. As an example, the first volume change can be recorded as ΔV; the first change can be recorded as ΔP; the second pressure can be recorded as P; the second change can be recorded as ΔT; and the third temperature can be recorded as T.

[0118] The specific determination process of determining the first change in the first pressure and the changed second pressure and the second change in the second temperature and the changed third temperature within the second preset time can be determined according to actual conditions and is not limited here.

[0119] The first preset condition can be determined according to actual conditions and is not limited here. As an example, the first preset condition can be (ΔT·T) 2 / (ΔP·ΔV)(P·ΔV)≥1.

[0120] The specific determination process of determining that the control mode of the control device is the pressure mode when the first volume change, the first change, the second pressure, the second change, and the third temperature meet the first preset condition can be determined according to actual conditions and is not limited here. As an example, when the first volume change, the first change, the second pressure, the second change, and the third temperature meet the first preset condition, determining that the control mode of the control device is the pressure mode can be when ΔV, ΔP, P, ΔT, T meet (ΔT·T) 2 When ΔP·ΔV)(P·ΔV)≥1, the control mode of the control device is determined to be the pressure mode. The pressure mode can be understood as opening pressure control.

[0121] The second preset condition can be determined according to actual conditions and is not limited here. As an example, the second preset condition can be (ΔT·T) 2 / (ΔP·ΔV)(P·ΔV)<1.

[0122] The specific determination process of determining that the control mode of the control device is the temperature mode when the first volume change, the first change, the second pressure, the second change, and the third temperature meet the second preset condition can be determined according to actual conditions and is not limited here. As an example, when the first volume change, the first change, the second pressure, the second change, and the third temperature meet the second preset condition, determining that the control mode of the control device is the temperature mode can be when ΔV, ΔP, P, ΔT, T meet (ΔT·T) 2 When ΔP·ΔV)(P·ΔV)<1, the control mode of the control device is determined to be the temperature mode. The temperature mode can be understood as a temperature maintenance mode.

[0123] In an optional embodiment of the present application, determining the second control mode of the control device based on the first control mode, the re-collected first pressure, and the re-collected second temperature includes:

[0124] When the first control mode is the pressure mode, determining a second volume change in the liquid cooling box and a third change in the second temperature within two consecutive time periods based on the re-collected first pressure and the re-collected second temperature;

[0125] When the second volume change and the third volume change satisfy a third preset condition, determining that the second control mode is the temperature mode and the pressure mode;

[0126] When the second volume change and the third volume change satisfy a fourth preset condition, the second control mode is determined to be the pressure mode.

[0127] In this embodiment, when the first control mode is the pressure mode, determining the second volume change in the liquid cooling box and the third change in the second temperature in two consecutive time periods based on the re-collected first pressure and the re-collected second temperature can be understood as determining the second volume change in the liquid cooling box and the third change in the second temperature in two consecutive time periods based on the re-collected first pressure and the re-collected second temperature in the turned-on pressure control mode.

[0128] The second volume change and the third volume change in the liquid cooling box during the two consecutive time periods can be determined based on actual conditions and are not limited here. As an example, the second volume change can be recorded as ΔV1, ΔV2; the third change can be recorded as ΔT1, ΔT2.

[0129] When the first control mode is the pressure mode, the specific determination process of determining the second volume change in the liquid cooling box and the third change in the second temperature within two consecutive time periods based on the re-collected first pressure and the re-collected second temperature can be determined according to actual conditions and is not limited here.

[0130] The third preset condition may be determined according to actual conditions and is not limited here. As an example, the third preset condition may be ΔT2 / ΔV2-ΔT1 / ΔV1≥1.

[0131] The specific determination process of determining that the second control mode is the temperature mode and the pressure mode when the second volume change and the third change meet the third preset condition can be determined according to actual conditions, and is not limited here. As an example, when the second volume change and the third change meet the third preset condition, determining that the second control mode is the temperature mode and the pressure mode can be when the second volume change and the third change meet ΔT2 / ΔV2-ΔT1 / ΔV1≥1, determining that the second control mode is the temperature mode and the pressure mode. Among them, the temperature mode and the pressure mode can be understood as the pressure and temperature modes are turned on at the same time. In practical applications, it can also be simply stated as the pressure and temperature are turned on at the same time.

[0132] The fourth preset condition may be determined according to actual conditions and is not limited here. As an example, the fourth preset condition may be ΔT2 / ΔV2-ΔT1 / ΔV1<1.

[0133] When the second volume change and the third change satisfy the fourth preset condition, determining that the second control mode is the pressure mode can be determined according to actual conditions, and is not limited here. As an example, when the second volume change and the third change satisfy the fourth preset condition, determining that the second control mode is the pressure mode when the second volume change and the third change satisfy ΔT2 / ΔV2-ΔT1 / ΔV1<1. The pressure mode can be understood as a pressure-maintaining mode.

[0134] In an optional embodiment of the present application, determining the second control mode of the control device based on the first control mode, the re-collected first pressure, and the re-collected second temperature includes:

[0135] When the first control mode is the temperature mode, determining a third volume change in the liquid cooling box and a fourth change in the first pressure within a third time period based on the re-collected first pressure and the re-collected second temperature;

[0136] When the third volume change, the fourth volume change and the first pressure satisfy a fifth preset condition, determining that the second control mode is the pressure mode;

[0137] When the third volume change, the fourth volume change, and the first pressure satisfy a sixth preset condition, the second control mode is determined to be the temperature mode.

[0138] In this embodiment, when the first control mode is the temperature mode, determining the third volume change in the liquid cooling box and the fourth change in the first pressure within the third time period based on the re-collected first pressure and the re-collected second temperature can be understood as determining the third volume change in the liquid cooling box and the fourth change in the first pressure within the third time period based on the re-collected first pressure and the re-collected second temperature while maintaining the temperature control mode.

[0139] The third volume change, the fourth change and the first pressure can all be determined based on actual conditions and are not limited here. As an example, the third volume change can be recorded as ΔV; the fourth change can be recorded as ΔP; and the first pressure can be recorded as P.

[0140] The specific determination process of determining the third volume change in the liquid cooling box and the fourth change in the first pressure within the third time period based on the re-collected first pressure and the re-collected second temperature can be determined according to actual conditions and is not limited here.

[0141] The fifth preset condition may be determined according to actual conditions and is not limited here. As an example, the fifth preset condition may be ΔP(ΔV+1) / P≥1.

[0142] The specific determination process of determining that the second control mode is the pressure mode when the third volume change, the fourth change and the first pressure meet the fifth preset condition can be determined according to actual conditions, and is not limited here. As an example, when the third volume change, the fourth change and the first pressure meet the fifth preset condition, determining that the second control mode is the pressure mode can be when ΔV, ΔP, P meet ΔP(ΔV+1) / P≥1, determining that the second control mode is the pressure mode. The pressure mode can be understood as switching from the temperature maintenance mode to the pressure mode. In practical applications, the pressure mode can also be simply referred to as pressure.

[0143] The sixth preset condition may be determined according to actual conditions and is not limited here. As an example, the sixth preset condition may be ΔP(ΔV+1) / P<1.

[0144] When the third volume change, the fourth change and the first pressure meet the sixth preset condition, determining that the second control mode is the temperature mode can be determined according to actual conditions, and is not limited here. As an example, when the third volume change, the fourth change and the first pressure meet the sixth preset condition, determining that the second control mode is the temperature mode can be when ΔV, ΔP, P meet ΔP(ΔV+1) / P<1, determining that the second control mode is the temperature mode. The temperature mode can be understood as a temperature maintenance mode, and in practical applications, the temperature maintenance mode can be simply referred to as temperature.

[0145] In an optional embodiment of the present application, when the first temperature is close to the target temperature within the first preset time, the method further includes:

[0146] Determining the number of times the control mode of the control device is switched within the first preset time;

[0147] When the switching number is greater than or equal to a preset threshold, it is determined to interrupt the switching of the control mode of the control device.

[0148] In this embodiment, the first preset time can be determined according to actual conditions and is not limited here. As an example, the first preset time can be 3 minutes.

[0149] The specific determination process of determining the number of switching times of the control mode of the control device within the first preset time can be determined according to actual conditions and is not limited here.

[0150] The preset threshold can be determined according to actual conditions and is not limited here. As an example, the preset threshold can be 3 times.

[0151] In practical applications, as an example, logic judgment protection: within 3 minutes, the control target value remains unchanged, and if the mode switching occurs 3 times, the pressure control mode will be maintained; when it deviates from the target value by 3 degrees for 30 seconds, the logic judgment protection will be interrupted.

[0152] In an optional embodiment of the present application, the method further includes:

[0153] In the case where there is a fault in the temperature mode, determining that the control mode of the control device is a pressure mode;

[0154] In the case that there is a fault in the pressure mode, the control mode of the control device is determined to be a temperature mode.

[0155] In this embodiment, whether the temperature mode has a fault can be determined based on actual conditions, which is not limited here. As an example, the temperature mode has a fault may be a temperature sensor fault.

[0156] The presence of a fault in the pressure mode may be determined based on actual conditions, which is not limited herein. As an example, the presence of a fault in the pressure mode may be a pressure sensor fault.

[0157] In actual application, in pressure mode, if the pressure (including pump) sensor fails, the temperature mode control operation is performed; in temperature mode, if the temperature sensor fails, the pressure control mode is performed. As an example, the combination mode: pressure control mode and temperature control combination mode, when the temperature control mode fails, the pressure control mode can be used, and only the thermal expansion valve is added in the design.

[0158] To facilitate understanding of the present application, the pressure and temperature control method based on a gravity heat pipe is exemplified herein as a pressure and temperature control method for optimizing a gravity heat pipe phase change liquid cooling box, which is applied to a pressure and temperature control device for optimizing a gravity heat pipe phase change liquid cooling box.

[0159] The specific implementation is as follows:

[0160] Temperature and pressure combination control, temperature and pressure combination control. Temperature mode operation (better energy efficiency). Target control (hereinafter referred to as continuous judgment, deviation from the target value accuracy range, a certain time equivalent, A-level judgment, A, continuous judgment, in the first judgment result representation>1<, 3 minutes, or,>2<, 2 minutes, determine that the control device maintains the temperature mode, which can also be understood as entering from the temperature mode to maintain the temperature mode; in the first judgment result representation>3°<, 30 seconds, determine that the control device switches from the temperature mode to the pressure mode, which can also be understood as entering from the temperature mode to open the pressure control. Mode judgment, when ΔV, ΔP, P, ΔT, T meet (ΔT·T) 2 / (ΔP·ΔV)(P·ΔV)≥1, the control mode of the control device is determined to be the pressure mode. The pressure mode can be understood as opening pressure control; when ΔV, ΔP, P, ΔT, T satisfy (ΔT·T) 2 / (ΔP·ΔV)(P·ΔV)<1, the control mode of the control device is determined to be the temperature mode. Wherein, the temperature mode can be understood as the temperature maintenance mode; further, when the second volume change and the third change satisfy ΔT2 / ΔV2-ΔT1 / ΔV1≥1, the second control mode is determined to be the temperature mode and the pressure mode. Wherein, the temperature mode and the pressure mode can be understood as the pressure and temperature modes are turned on at the same time. In practical applications, they can also be simply stated as pressure and temperature are turned on at the same time; when the second volume change and the third change satisfy ΔT2 / ΔV2-ΔT1 / ΔV1<1, the second control mode is determined to be the pressure mode. Wherein, the pressure mode can be understood as the pressure maintenance mode. When ΔV, ΔP, and P satisfy ΔP(ΔV+1) / P≥1, the second control mode is determined to be the pressure mode. The pressure mode can be understood as switching from the temperature-maintaining mode to the pressure mode. In practical applications, the pressure mode can also be simply referred to as pressure. When ΔV, ΔP, and P satisfy ΔP(ΔV+1) / P<1, the second control mode is determined to be the temperature mode. The temperature mode can be understood as the temperature-maintaining mode. In practical applications, the temperature-maintaining mode can be simply referred to as temperature. For ease of understanding, this can be combined with Figure 2 To understand, Figure 2 A schematic diagram of an application scenario for a pressure and temperature control method based on a gravity heat pipe.

[0161] In pressure mode, if the pressure (including pump) sensor fails, the temperature mode control operation will be executed; in temperature mode, if the temperature sensor fails, the pressure control mode will be executed. Figure 3 To understand, Figure 3This is a schematic diagram of another application scenario implemented by a pressure and temperature control method based on a gravity heat pipe.

[0162] Pressure mode operation, target control, logic judgment protection: within 3 minutes, the control target value remains unchanged, and the mode switching occurs 3 times, then the pressure control mode operation is maintained; when it deviates from the target value by 3 degrees, 30 seconds, the logic judgment protection is interrupted. Figure 4 To understand, Figure 4 This is a schematic diagram of another application scenario implemented by a pressure and temperature control method based on a gravity heat pipe.

[0163] In this embodiment, the visual early warning system based on fault recording can detect potential faults in advance and present them visually, allowing operation and maintenance personnel to intuitively understand the health status and potential risks of the system and quickly take corresponding measures, which can effectively reduce the time and economic losses caused by faults. In addition, when a certain fault occurs multiple times, this system will actively allocate resources for uninterrupted query. When the conditions in the fault early warning model are triggered, a corresponding alarm will be generated for the entire system, so that the staff can perceive the arrival of the alarm in advance and make corresponding prevention strategies.

[0164] The present application also provides a pressure and temperature control device based on a gravity heat pipe, which can be combined with Figure 5 , Figure 6 , Figure 7 To understand, Figure 5 This is a schematic structural diagram of a pressure and temperature control device based on a gravity heat pipe according to an embodiment of the present application; Figure 6 This is a structural schematic diagram of another pressure and temperature control device based on a gravity heat pipe according to an embodiment of the present application; Figure 7 This is a structural schematic diagram of another pressure and temperature control device based on a gravity heat pipe in an embodiment of the present application; the device 500 includes: a gravity heat pipe assembly 501 and a liquid cooling box 503 provided with a sensor assembly 502, a power assembly 504 for gas circulation, and a control assembly 505; one end of the liquid cooling box is connected to one end of the gravity heat pipe assembly through a first pipeline; the other end of the liquid cooling box is connected to the other end of the gravity heat pipe assembly through a second pipeline; a first switch assembly 506 is provided on the first pipeline; the power assembly 504 is connected in parallel to the first switch assembly 506; an electronic expansion valve 507 is provided on the second pipeline; the electronic expansion valve 507 is connected to the sensor assembly 502; the control assembly 505 is respectively connected to the gravity heat pipe assembly 501, the sensor assembly 502, and the power assembly 504;

[0165] The sensor assembly 502 is used to collect the first temperature value in the liquid cooling box and start the gravity heat pipe assembly 501 to perform phase change heat transfer when the first switch assembly is in the on state, and monitor the pressure in the liquid cooling box 503 at different time points;

[0166] The electronic expansion valve 507 is used to control its own valve to open wider when the temperature value is greater than the temperature setting value, thereby increasing the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503; and to control its own valve to open narrower when the temperature value is less than or equal to the temperature setting value, thereby decreasing the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503;

[0167] The control component 505 is used to control the first switch component 506 to be in an off state when the pressure changes; and determine the change in the volume of the gas in the liquid cooling box 503 based on the pressure at different time points, and control the operation of the power component 504 according to the change in the volume of the gas in the liquid cooling box 503 to adjust the pressure change.

[0168] It should be noted that the pressure and temperature control device 500 based on the gravity heat pipe can be determined according to actual conditions and is not limited here. As an example, the pressure and temperature control device 500 based on the gravity heat pipe can also be understood as a pressure and temperature control device for optimizing the gravity heat pipe phase change liquid cooling box.

[0169] The gravity heat pipe assembly 501 may be any gravity heat pipe assembly, which is not limited here. As an example, the gravity heat pipe assembly 501 may include a fan and a gravity heat pipe. In practical applications, the gravity heat pipe may be referred to as a heat pipe.

[0170] The sensor assembly 502 can be determined according to actual conditions and is not limited here. As an example, the sensor assembly 502 can include a temperature sensor and a pressure sensor. The symbol of the temperature sensor can be recorded as T; the symbol of the pressure sensor can be recorded as P.

[0171] The liquid cooling box 503 can be determined according to actual conditions and is not limited here. As an example, the liquid cooling box 503 can be a two-phase immersion tank. In practical applications, the two-phase immersion tank can also be referred to as a phase change liquid cooling tank.

[0172] The power component 504 of the gas circulation can be determined according to actual conditions and is not limited here. As an example, the power component 504 may include a gas circulation pump; for example, the power component 504 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 may be understood as a fixed-frequency gas circulation pump; the second gas circulation pump with a variable frequency may be understood as a variable-frequency gas circulation pump; and the third gas circulation pump may include a peristaltic pump.

[0173] The control component 505 can be determined according to actual conditions, and is not limited here. As an example, the control component 505 can include a controller. In actual applications, the controller can be a centralized procurement controller.

[0174] The first switch component 506 can be determined according to actual conditions and is not limited here. As an example, the first switch component 506 includes an electric ball valve.

[0175] The control component 505 is respectively connected to the gravity heat pipe component 501, the sensor component 502, and the power component 504. The connection can be determined according to the actual situation 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 be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as (WiFi, Wireless Fidelity) connection.

[0176] When the first switch assembly 506 is in the on state, starting the gravity heat pipe assembly 501 to perform phase change heat transfer can be understood as turning on the first switch assembly 506 and the gravity heat pipe assembly 501 to perform gravity heat pipe phase change heat transfer. As an example, the first switch assembly 506 can be an electric ball valve; the gravity heat pipe assembly 501 can include a fan and a gravity heat pipe. Turning on the first switch assembly 506 and the gravity heat pipe assembly 501 to perform gravity heat pipe 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 pipe phase change heat transfer.

[0177] The electronic expansion valve 507 can be determined according to actual conditions and is not limited here. As an example, the electronic expansion valve 504 can be a thermal expansion valve.

[0178] Monitor the pressure at different time points in the liquid cooling box 503; wherein the different time points can be determined according to actual conditions and are not limited here. As an example, the different time points can at least include a first time point and a second time point, and monitoring the pressure at different time points in the liquid cooling box 503 can be understood as monitoring the first pressure at the first time point and the second pressure at the second time point in the liquid cooling box 503.

[0179] When the temperature value is greater than the temperature setting value, the valve of the electronic expansion valve 507 is controlled to open wide, and the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503 is increased. It can be understood that when the temperature value is greater than the temperature setting value, the electronic expansion valve 507 is controlled to open wide, and the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503 is increased. Among them, the temperature setting value can be determined according to actual conditions and is not limited here. In practical applications, the temperature setting value can be referred to as the setting value. As an example, when the electronic expansion valve 507 is a thermal expansion valve, when the temperature value is greater than the temperature setting value, the electronic expansion valve 507 is controlled to open wide, and the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503 can be controlled to open wide when the temperature value is greater than the temperature setting value, and the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503 is increased. In practical applications, when the temperature value collected by the temperature sensor is greater than the setting value, the thermal expansion valve automatically adjusts a larger flow rate.

[0180] When the temperature value is less than or equal to the temperature setting value, controlling the valve opening of the electronic expansion valve 507 to reduce the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503 can be understood as when the temperature value is less than or equal to the temperature setting value, controlling the valve opening of the electronic expansion valve 507 to reduce the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503. Among them, the temperature setting value can be determined according to actual conditions and is not limited here. In practical applications, the temperature setting value can be referred to as the setting value. As an example, when the electronic expansion valve 507 is a thermal expansion valve, when the temperature value is less than or equal to the temperature setting value, controlling the valve opening of the electronic expansion valve 507 to reduce the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503 can be when the temperature value is less than or equal to the temperature setting value, controlling the valve opening of the thermal expansion valve to reduce the flow rate between the gravity heat pipe assembly 501 and the liquid cooling box 503. In practical applications, when the temperature value collected by the temperature sensor is less than or equal to the set value, the thermal expansion valve automatically adjusts to a smaller flow rate.

[0181] In practical applications, as an example, if the collected temperature value is greater than the set value, the thermal expansion valve automatically adjusts a larger flow rate, and if the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts a smaller flow rate, thereby controlling the phase change liquid cooler through a simple control system.

[0182] In the case where the pressure changes, controlling the first switch component 506 to be in an off state can be understood as closing the first switch component 506 in the case where the pressure changes.

[0183] The specific determination process of determining the change in the volume of gas in the liquid cooling box 503 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, and the determination of the change in the volume of gas in the liquid cooling box 503 based on the pressure at different time points may be determining the change in the volume of gas in the liquid cooling box 503 based on the value of the first pressure and the value of the second pressure; the determination of the change in the volume of gas in the liquid cooling box 503 based on the value of the first pressure and the value of the second pressure may be determined by a preset algorithm based on the value of the first pressure and the value of the second pressure; wherein the preset algorithm can be determined according to actual conditions, and is not limited here. As an example, the preset algorithm may refer to the previous formula (1).

[0184] In formula (1), ΔV is the increased gas volume caused by the phase change of the cooling medium, in L;

[0185] P1: collection time point 1, the pressure in the immersion tank, unit kap;

[0186] V1: the volume of gas in the immersion cabinet at the sampling time point 1, in L;

[0187] n: amount of substance, unit: moL;

[0188] R: universal gas constant, 8.31 J / (mol·K);

[0189] r: the heat absorbed by a unit mass of a substance during vaporization, in J / kg;

[0190] c: specific heat capacity of cooling medium, unit: kJ / kg·K;

[0191] P2: collection time point 2, the pressure in the immersion tank, unit kap;

[0192] In formula (1), the initial state quantities except P2 are all known quantities, and when the pressure changes, the change in gas volume during the phase change process can be calculated. That is, the change in gas volume in the liquid cooling box 503 is determined based on the pressure at different time points.

[0193] The power component 504 may include a gas circulation pump; controlling the power component 504 to operate according to the change in the gas volume in the liquid cooling box 503 to adjust the pressure change can be understood as controlling the gas circulation pump to operate according to the change in the gas volume in the liquid cooling box 503 to adjust the pressure change.

[0194] In practical applications, when the first switch component 506 is an electric ball valve, the power component 504 is a gas circulation pump, the sensor component 502 is a pressure sensor, and the gravity heat pipe component 501 may include a fan and a gravity heat pipe, the electric ball valve, the fan and the gravity heat pipe can be opened in the normal mode to perform phase change heat transfer of the gravity heat pipe. The pressure at different time points in the liquid cooling box 503 is monitored by a pressure sensor, for example, the pressure at the first time point is collected, and the pressure at the second time point is collected; wherein the first time point and the second time point 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, and the change in the volume of the gas in the liquid cooling box 503 is calculated by using the vaporization latent heat calculation equation, the ideal gas equation, and the heat exchange calculation equation, with reference to the previous formula (1). In the pressure control mode, the gas circulation pump is controlled to circulate to adjust the pressure change.

[0195] In the embodiment of the present application, a power component for gas circulation is added to the device, and a first switch component is set on the first pipeline. When the sensor component monitors the pressure change at different time points in the liquid cooling box, the control component controls the first switch component to be in a disconnected state; and the change in the volume of the gas in the liquid cooling box is determined based on the pressure at different time points, and the power component is controlled to work according to the change in the volume of the gas in the liquid cooling box to adjust the change in the pressure; that is, the pressure change in the heat exchange of the phase change system is accurately controlled. And the temperature value in the liquid cooling box is collected by the temperature sensor. When the temperature value is greater than the temperature setting value, the valve of the thermal expansion valve is controlled to open wider to automatically adjust a larger flow rate; when the temperature value is less than or equal to the temperature setting value, the valve of the thermal expansion valve is controlled to open narrower to automatically adjust a smaller flow rate. That is, the temperature in the heat exchange of the phase change system is accurately controlled.

[0196] In one embodiment, the sensor assembly 502 includes a temperature sensor 5021 and a pressure sensor 5022; the first switch assembly 506 includes an electric ball valve;

[0197] The temperature sensor 5021 is used to collect the first temperature value in the liquid cooling box;

[0198] The pressure sensor 5022 is used to monitor a first pressure at a first time point and a second pressure at a second time point in the liquid cooling box;

[0199] The control component 505 is also used to control the electric ball valve to be in a disconnected state when the value of the first pressure is different from the value of the second pressure; and to determine the change in the volume of the gas in the liquid cooling box 503 based on the value of the first pressure and the value of the second pressure.

[0200] In this embodiment, the sensor component 502 includes a temperature sensor 5021 and a pressure sensor 5022 ; the symbol of the temperature sensor 5021 can be denoted as T; the symbol of the pressure sensor 5022 can be denoted as P.

[0201] The temperature sensor 5021 is used to collect the first temperature value in the liquid cooling box 503, which can be understood as using the temperature sensor to collect the temperature value in the liquid cooling box 503 in real time.

[0202] Monitor the first pressure at the first time point and the second pressure at the second time point in the liquid cooling box 503; wherein, the first time point and the second time point 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 first pressure can be recorded as P1; the second pressure can be recorded as P2.

[0203] When the value of the first pressure is different from the value of the second pressure, controlling the electric ball valve to be in a disconnected state can be understood as closing the electric ball valve when the value of the first pressure is different from the value of the second pressure.

[0204] The specific determination process of determining the change in the volume of gas in the liquid cooling box 503 based on the value of the first pressure and the value of the second pressure can be determined according to actual conditions, and is not limited here. As an example, the determination of the change in the volume of gas in the liquid cooling box 503 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. The change in the volume of gas in the liquid cooling box 503 is determined by a preset algorithm; wherein 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).

[0205] It should be noted that in the embodiment of the present application, if the above-mentioned pressure and temperature control method based on the gravity heat pipe is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical embodiment of the embodiment of the present application is 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, including a number of instructions to enable a pressure and temperature control system based on a gravity heat pipe (which can be a personal computer, server, or network equipment, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a disk or an optical disk. In this way, the embodiment of the present application is not limited to any specific combination of hardware and software.

[0206] Based on the hardware implementation of the above program modules, an embodiment of the present application also provides a pressure and temperature control device based on a gravity heat pipe, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the program, the steps in the pressure and temperature control method based on a gravity heat pipe provided in the above embodiment are implemented.

[0207] Correspondingly, an embodiment of the present application provides a computer program product, which, when executed by a processor, implements the steps in the pressure and temperature control method based on a gravity heat pipe provided in the above embodiment.

[0208] Correspondingly, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps in the pressure and temperature control method based on a gravity heat pipe provided in the above embodiment are implemented.

[0209] It should be noted here that the description of the above storage medium and device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0210] Correspondingly, an embodiment of the present application provides a computer program product, including a computer program, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any of the above methods are implemented.

[0211] Correspondingly, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above methods are implemented.

[0212] It should be noted here that the description of the above storage medium and device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0213] It should be noted that Figure 8 This is a schematic diagram of the structure of the pressure and temperature control device based on the gravity heat pipe in the embodiment of the present application. Figure 8 As shown, the control device 800 includes: a processor 801 and a memory 803 . Optionally, the control device 800 may also include a communication interface 802 .

[0214] It can be understood that the memory 803 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAMbus random access memory (DRRAM).The memory 803 described in the embodiments of the present application is intended to include but is not limited to these and any other suitable types of memories.

[0215] The method disclosed in the above embodiment of the present application can be applied to the processor 801, or implemented by the processor 801. The processor 801 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 801. The above processor 801 may be a general processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 801 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the memory 803, and the processor 801 reads the information in the memory 803 and completes the steps of the above method in combination with its hardware.

[0216] In an exemplary embodiment, the device may be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field programmable gate array (FPGA), general processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0217] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0218] It should be noted that, in this application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0219] The methods disclosed in several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0220] The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0221] The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0222] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A pressure and temperature control method based on a gravity heat pipe, characterized in that: Applicable to a control device including a pressure mode and a temperature mode; the method comprises: During the operation of the temperature mode, obtaining in real time a first temperature in a liquid cooling box in the control device; Determine within a first preset time period that the first temperature deviates from a target temperature, and obtain a first determination result; Determining, based on the first judgment result, that the control device maintains the temperature mode or switches to the pressure mode; When the control device maintains the temperature mode or switches to the pressure mode, collecting the first pressure and the second temperature in the liquid cooling box in the control device in real time; A control mode of the control device is determined based on the first pressure and the second temperature; the control mode includes the temperature mode and / or the pressure mode.

2. The method according to claim 1, characterized in that The determining, based on the first judgment result, that the control device maintains the temperature mode or switches to the pressure mode comprises: When the first judgment result indicates that the first temperature deviates from the target temperature to a large extent, determining that the control device is switched from the temperature mode to the pressure mode; When the first judgment result indicates that the first temperature deviates from the target temperature by a small degree, it is determined that the control device maintains the temperature mode.

3. The method according to claim 1, characterized in that The control mode includes a first control mode and a second control mode; the first control mode includes the temperature mode or the pressure mode; the second control mode includes the temperature mode and / or the pressure mode; The determining the control mode of the control device based on the first pressure and the second temperature includes: determining the first control mode of the control device according to the first pressure and the second temperature; Re-collecting the first pressure and the second temperature in the liquid cooling box in the control device in real time according to the first control mode; The second control mode of the control device is determined based on the first control mode, the re-collected first pressure, and the re-collected second temperature.

4. The method according to claim 3, characterized in that: The determining the first control mode of the control device according to the first pressure and the second temperature includes: Obtaining the initial volume of gas in the liquid cooling box in the control device; determining a first volume change of gas in a liquid cooling box in the control device based on the initial volume, the first pressure and the second temperature; Determine a first change in the first pressure and a second pressure after the change and a second change in the second temperature and a third temperature after the change within a second preset time; When the first volume change, the first change, the second pressure, the second change and the third temperature meet a first preset condition, determining that the control mode of the control device is the pressure mode; When the first volume change, the first change, the second pressure, the second change and the third temperature satisfy a second preset condition, the control mode of the control device is determined to be the temperature mode.

5. The method according to claim 3, characterized in that: The determining the second control mode of the control device based on the first control mode, the re-collected first pressure, and the re-collected second temperature includes: When the first control mode is the pressure mode, determining a second volume change in the liquid cooling box and a third change in the second temperature within two consecutive time periods based on the re-collected first pressure and the re-collected second temperature; When the second volume change and the third volume change satisfy a third preset condition, determining that the second control mode is the temperature mode and the pressure mode; When the second volume change and the third volume change satisfy a fourth preset condition, the second control mode is determined to be the pressure mode.

6. The method according to claim 3, characterized in that The determining the second control mode of the control device based on the first control mode, the re-collected first pressure, and the re-collected second temperature includes: When the first control mode is the temperature mode, determining a third volume change in the liquid cooling box and a fourth change in the first pressure within a third time period based on the re-collected first pressure and the re-collected second temperature; When the third volume change, the fourth volume change and the first pressure satisfy a fifth preset condition, determining that the second control mode is the pressure mode; When the third volume change, the fourth volume change, and the first pressure satisfy a sixth preset condition, the second control mode is determined to be the temperature mode.

7. The method according to any one of claims 1 to 6, characterized in that: When the first temperature approaches the target temperature within the first preset time, the method further includes: Determining the number of times the control mode of the control device is switched within the first preset time; When the switching number is greater than or equal to a preset threshold, it is determined to interrupt the switching of the control mode of the control device.

8. A pressure and temperature control device based on a gravity heat pipe, characterized in that: The device comprises: a gravity heat pipe assembly and a liquid cooling box provided with a sensor assembly, a power assembly for gas circulation and a control assembly; one end of the liquid cooling box is connected to one end of the gravity heat pipe assembly through a first pipeline; the other end of the liquid cooling box is connected to the other end of the gravity heat pipe assembly through a second pipeline; a first switch assembly is provided on the first pipeline; the power assembly is connected in parallel with the first switch assembly; an electronic expansion valve is provided on the second pipeline; the electronic expansion valve is connected to the sensor assembly; the control assembly is respectively connected to the gravity heat pipe assembly, the sensor assembly and the power assembly; The sensor assembly is used to collect a first temperature value in the liquid cooling box and to start the gravity heat pipe assembly to perform phase change heat transfer when the first switch assembly is in an on state, and to monitor the pressure in the liquid cooling box at different time points; The electronic expansion valve is used to control its own valve to open wider when the temperature value is greater than the temperature setting value, thereby increasing the flow rate between the gravity heat pipe assembly and the liquid cooling box; and to control its own valve to open narrower when the temperature value is less than or equal to the temperature setting value, thereby decreasing the flow rate between the gravity heat pipe assembly and the liquid cooling box; The control component is used to control the first switch component to be in an off state when the pressure changes; and determine the change in the volume of the gas in the liquid cooling box based on the pressure at different time points, and control the operation of the power component according to the change in the volume of the gas in the liquid cooling box to adjust the pressure change.

9. The device according to claim 8, characterized in that The sensor assembly includes a temperature sensor and a pressure sensor; the first switch assembly includes an electric ball valve; The temperature sensor is used to collect the first temperature value in the liquid cooling box; The pressure sensor is used to monitor a first pressure at a first time point and a second pressure at a second time point in the liquid cooling box; The control component is further used to control the electric ball valve to be in a disconnected state when the value of the first pressure is different from the value of the second pressure; And determining a change in the volume of the gas in the liquid cooling box based on the value of the first pressure and the value of the second pressure.

10. A liquid cooling data center, characterized in that: The liquid-cooled data center comprises the device described in any one of claims 8-9.

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