Internal pressure detection method, device and equipment of liquid cooling pipeline and storage medium

Abstract

The invention is suitable for the technical field of liquid cooling pipelines, and provides a method for detecting the internal pressure of a liquid cooling pipeline, and the method comprises the steps: obtaining a pipeline temperature parameter value and a pipeline stress variable value, which are measured through a temperature sensor and a strain gauge disposed on the inner wall of the liquid cooling pipeline at the current moment, a temperature stress variable value corresponding to the pipeline temperature parameter value is selected from a temperature strain database, and a plurality of temperature stress variable values of the strain gauge and the corresponding relation between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value are recorded in the temperature strain database; and correcting the pipeline stress variable value according to the temperature stress variable value corresponding to the pipeline temperature parameter value, and calculating the internal pressure value of the liquid cooling pipeline at the current moment according to the pipeline performance information of the liquid cooling pipeline and the corrected corrected stress variable value. The technical problem that only the stress change of the strain gauge on the outer wall of the liquid cooling pipeline serves as the detection basis of the internal pressure of the liquid cooling pipeline, and the detection accuracy is low can be solved.

Description

Technical Field

[0001] The present application belongs to the technical field of liquid cooling pipes, and in particular, relates to a method, device, equipment and storage medium for detecting the internal pressure of a liquid cooling pipe. Background Art

[0002] The internal pressure of the liquid cooling pipe is generally detected by pasting one or more strain gauges on the outer wall of the liquid cooling pipe. A strain gauge is a sensor made of metal foil or conductive material that can sense and convert stress and strain on the surface of an object. When the strain gauge is pasted on the outer wall of the pipe, when the inside of the pipe is under pressure, the pipe wall will deform slightly. This deformation is transmitted to the strain gauge pasted on the outer wall of the pipe, causing the resistance value of the strain gauge to change. By measuring the resistance change of the strain gauge, the strain value of the strain gauge can be indirectly measured, and then the internal pressure value of the pipe can be calculated based on the performance parameters of the pipe (such as outer diameter D, wall thickness t, elastic modulus E and Poisson's ratio v).

[0003] However, when the liquid flows through the liquid cooling pipe, the temperature of the pipe will also change with the flow rate of the liquid. The change in pipe temperature will cause the resistance of the strain gauge to change, thereby causing the stress of the strain gauge to change. Simply using the stress change measured by the strain gauge on the outer wall of the liquid cooling pipe as the basis for detecting the internal pressure of the liquid cooling pipe will not give accurate detection results. Summary of the invention

[0004] The embodiments of the present application provide a method, device, equipment and storage medium for detecting the internal pressure of a liquid cooling pipe, which can solve the technical problem that the stress change of the strain gauge on the outer wall of the liquid cooling pipe is simply used as the basis for detecting the internal pressure of the liquid cooling pipe, resulting in inaccurate detection results.

[0005] In a first aspect, an embodiment of the present application provides a method for detecting the internal pressure of a liquid cooling pipe, comprising:

[0006] Obtaining a pipeline temperature parameter value of a liquid cooling pipeline and a pipeline stress variable value of the liquid cooling pipeline at the current moment, wherein the pipeline temperature parameter value is measured by a temperature sensor disposed on the inner wall of the liquid cooling pipeline, and the pipeline stress variable value is measured by a strain gauge disposed on the inner wall of the liquid cooling pipeline;

[0007] Selecting a temperature stress variable value corresponding to the pipeline temperature parameter value from a temperature strain database, wherein the temperature stress variable value is used to characterize the change in stress of the strain gauge itself caused by temperature change, and the temperature strain database records: multiple temperature stress variable values ​​of the strain gauge, and the corresponding relationship between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value;

[0008] According to the temperature stress variable value corresponding to the pipeline temperature parameter value, the pipeline stress variable value of the liquid cooling pipeline is corrected to obtain the corrected stress variable value of the liquid cooling pipeline at the current moment;

[0009] The internal pressure value of the liquid cooling pipeline at the current moment is calculated based on the pipeline performance information of the liquid cooling pipeline and the modified stress variable value acquired in advance.

[0010] In a possible implementation manner of the first aspect, the temperature strain database further includes strain gauge profile information of multiple strain gauges and multiple temperature stress variable values ​​of each strain gauge, and a corresponding relationship between each temperature stress variable value of each strain gauge and a pipeline temperature parameter value, and selecting the temperature stress variable value corresponding to the pipeline temperature parameter value from the temperature strain database includes:

[0011] Acquire target strain gauge profile information of the strain gauge disposed on the inner wall of the liquid cooling pipe;

[0012] According to the target strain gauge profile information, all temperature stress variable values ​​of the strain gauges arranged on the inner wall of the liquid cooling pipe are screened out from the temperature strain database;

[0013] The temperature stress variable value corresponding to the pipeline temperature parameter value is selected from all the temperature stress variable values ​​of the strain gauges arranged on the inner wall of the liquid cooling pipeline.

[0014] In a possible implementation manner of the first aspect, when the strain gauge is arranged in a ring shape on the inner wall of the liquid cooling pipe in a direction perpendicular to the liquid cooling pipe, the pipe stress variable value is a circumferential stress variable value, and the pipe stress variable value of the liquid cooling pipe is corrected according to the temperature stress variable value corresponding to the pipe temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipe at the current moment, including:

[0015] The temperature stress variable value corresponding to the pipeline temperature parameter value is subtracted from the circumferential stress variable value to obtain the circumferential modified stress variable value of the liquid cooling pipeline at the current moment.

[0016] In a possible implementation of the first aspect, the calculating the internal pressure value of the liquid cooling pipeline at the current moment according to the pre-acquired pipeline performance information of the liquid cooling pipeline and the modified stress variable value includes:

[0017] According to the pre-acquired pipeline performance information of the liquid cooling pipeline and the circumferential modified stress variable value, the internal pressure value P of the liquid cooling pipeline at the current moment is calculated according to the following formula:

[0018]

[0019] Wherein, E is a constant representing the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant representing the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε y It represents the circumferential modified stress variable value of the liquid cooling pipe at the current moment.

[0020] In a possible implementation manner of the first aspect, when the strain gauge is arranged on the inner wall of the liquid cooling pipe along the axial direction of the liquid cooling pipe, the pipe stress variable value is an axial stress variable value, and the pipe stress variable value of the liquid cooling pipe is corrected according to the temperature stress variable value corresponding to the pipe temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipe at the current moment, including:

[0021] The temperature stress variable value corresponding to the pipeline temperature parameter value is subtracted from the axial stress variable value to obtain the axial corrected stress variable value of the liquid cooling pipeline at the current moment.

[0022] In a possible implementation of the first aspect, the calculating the internal pressure value of the liquid cooling pipeline at the current moment according to the pre-acquired pipeline performance information of the liquid cooling pipeline and the modified stress variable value includes:

[0023] According to the pre-acquired pipeline performance information of the liquid cooling pipeline and the axial modified stress variable value, the internal pressure value P of the liquid cooling pipeline at the current moment is calculated according to the following formula:

[0024]

[0025] Wherein, E is a constant representing the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant representing the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε x It represents the axial modified stress variable value of the liquid cooling pipe at the current moment.

[0026] In a possible implementation manner of the first aspect, a distance between the strain gauge disposed on the inner wall of the liquid cooling pipe and the temperature sensor disposed on the inner wall of the liquid cooling pipe is within a preset range.

[0027] In a second aspect, an embodiment of the present application provides an internal pressure detection device for a liquid cooling pipe, comprising:

[0028] A data acquisition module, used to obtain a pipe temperature parameter value of the liquid cooling pipe and a pipe stress variable value of the liquid cooling pipe at the current moment, wherein the pipe temperature parameter value is measured by a temperature sensor attached to the inner wall of the liquid cooling pipe, and the pipe stress variable value is measured by a strain gauge arranged on the inner wall of the liquid cooling pipe;

[0029] A stress data query module is used to select a temperature stress variable value corresponding to the pipeline temperature parameter value from a temperature strain database, wherein the temperature stress variable value is used to characterize the change in stress of the strain gauge itself caused by temperature change, and the temperature strain database records: multiple temperature stress variable values ​​of the strain gauge, and the corresponding relationship between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value;

[0030] A stress variable correction module, used to correct the pipeline stress variable value of the liquid cooling pipeline according to the temperature stress variable value corresponding to the pipeline temperature parameter value, so as to obtain the corrected stress variable value of the liquid cooling pipeline at the current moment;

[0031] The internal pressure calculation module is used to calculate the internal pressure value of the liquid cooling pipeline at the current moment according to the pipeline performance information of the liquid cooling pipeline and the modified stress variable value acquired in advance.

[0032] In a third aspect, an embodiment of the present application provides an internal pressure detection device for a liquid cooling pipe, including a display system, a power supply system, a strain gauge, a temperature sensor, and an internal pressure detection device for a liquid cooling pipe;

[0033] Wherein, the temperature sensor is used to measure the pipe temperature parameter value of the liquid cooling pipe;

[0034] The strain gauge is used to measure the pipeline stress variable value of the liquid cooling pipeline;

[0035] The display system is used to display the pipeline temperature parameter value, the pipeline stress variable value and the internal pressure value of the liquid cooling pipeline;

[0036] The power supply system is used to supply power to the display system, the temperature sensor and the strain gauge;

[0037] The internal pressure detection device of the liquid cooling pipe is used to execute any of the above methods.

[0038] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements any of the methods described above.

[0039] In a fifth aspect, an embodiment of the present application provides a computer program product. When the computer program product runs on an internal pressure detection device of a liquid cooling pipe, the internal pressure detection device of the liquid cooling pipe executes any of the methods described above.

[0040] Compared with the prior art, the embodiments of the present application have the following beneficial effects: by obtaining the pipeline temperature parameter value and the pipeline stress variable value of the liquid cooling pipeline at the current moment, since the temperature strain database records multiple temperature stress variable values ​​of the strain gauge, as well as the corresponding relationship between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value, the temperature stress variable value is used to characterize the change in stress of the strain gauge itself caused by temperature change, the temperature stress variable value corresponding to the pipeline temperature parameter value can be selected from the temperature strain database, and then the pipeline stress variable value of the liquid cooling pipeline is corrected according to the temperature stress variable value corresponding to the pipeline temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipeline at the current moment, and since the temperature sensor and the strain gauge are arranged on the inner wall of the liquid cooling pipeline, the temperature sensor and the strain gauge can be measured. The obtained pipeline temperature parameter value and pipeline stress variable value are more accurate, and the corrected corrected stress variable value is also more accurate. Therefore, according to the pipeline performance information and corrected stress variable value of the liquid cooling pipeline obtained in advance, the internal pressure value of the liquid cooling pipeline at the current moment calculated is also more accurate, and the corrected stress variable value eliminates the change of stress of the strain gauge itself caused by temperature change, so that the internal pressure value of the liquid cooling pipeline calculated by the corrected stress variable is not affected by the strain gauge itself, thereby improving the calculation accuracy of the internal pressure value, making the calculated internal pressure value of the liquid cooling pipeline more accurate, and realizing more accurate monitoring of the internal pressure value of the liquid cooling pipeline, thereby solving the technical problem of simply taking the stress change of the strain gauge on the outer wall of the liquid cooling pipeline as the detection basis of the internal pressure of the liquid cooling pipeline, and the detection result is not accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 It is a flow chart of a method for detecting the internal pressure of a liquid cooling pipe provided in one embodiment of the present application;

[0043] Figure 2 It is a structural schematic diagram of a strain gauge provided by the prior art;

[0044] Figure 3 It is a structural schematic diagram of another strain gauge provided by the prior art;

[0045] Figure 4 It is a circuit schematic diagram of a strain gauge provided by the prior art;

[0046] Figure 5 This is a schematic diagram of the structure of a liquid cooling pipeline with a strain gauge and a temperature sensor attached thereto provided in one embodiment of the present application;

[0047] Figure 6 This is a schematic diagram of a method for sticking a strain gauge on a liquid cooling pipe provided in one embodiment of the present application;

[0048] Figure 7 is a circuit schematic diagram of a strain gauge provided in one embodiment of the present application;

[0049] Figure 8 is a circuit schematic diagram of another strain gauge provided in another embodiment of the present application;

[0050] Fig. 9 is a circuit schematic diagram of another strain gauge provided in another embodiment of the present application;

[0051] Fig.10 This is a schematic diagram of force analysis inside a liquid cooling pipe provided in one embodiment of the present application;

[0052] Fig.11 is a structural schematic diagram of an internal pressure detection device for a liquid cooling pipe provided in another embodiment of the present application;

[0053] Fig.12 It is a structural schematic diagram of an internal pressure detection device for a liquid cooling pipe provided in one embodiment of the present application;

[0054] 631 - adhesive layer one, 632 - adhesive layer two, 633 - substrate, 634 - resistance wire, 635 - covering layer, 636 - lead wire, 637 - target object. DETAILED DESCRIPTION

[0055] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0056] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0057] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0058] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0059] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0060] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0061] When measuring the pressure on the surface of a target object on the market, the commonly used sensor is a semiconductor sensor, which has a high measurement sensitivity. However, the strain limit of the semiconductor sensor is small, and it cannot be radially assembled and measured on a pipeline with a large curvature, and can only be pasted on a flat surface. Therefore, when using a semiconductor sensor to measure the pressure on the surface of a target object, the measured surface of the target object must be flat, and it is impossible to install and measure the surface of a target object with a curved surface. Therefore, in the prior art, when measuring the stress of a target object with a curved surface such as a pipeline, a common strain gauge is used for pressure measurement.

[0062] like Figure 2 and Figure 3 As shown, Figure 2 It is a structural schematic diagram of a strain gauge provided by the prior art. Figure 3It is a structural schematic diagram of another strain gauge provided by the prior art. The strain gauge is a uniaxial horizontal structure, roughly a sheet-shaped rectangular parallelepiped, which can measure the strain caused by tension, strain under pressure, strain caused by bending, and displacement strain, etc., to achieve the measurement of tiny elongation or contraction (strain) caused by external force on the surface of the target object.

[0063] Common strain gauges are divided into multiple resistance types according to their resistance values, such as 60 ohms, 100 ohms, 120 ohms, 350 ohms, 650 ohms and 1000 ohms; the main types of strain gauges can also be divided into foil strain gauges, wire strain gauges and semiconductor strain gauges.

[0064] Strain gauges are made of polyimide substrate, constantan or kama foil. Figure 2 and Figure 3 As shown, it is generally necessary to use an adhesive to attach the base 633 of the strain gauge 63 to the surface of the target object 637, wherein, for example Figure 3 (a) and Figure 3 As shown in (b), the adhesive layer 1 631 is bonded to the surface of the target object, and the adhesive layer 2 632 is between the insulating layers of the strain gauge. On the base 633 of the strain gauge (thin resin or similar electrical insulator), a grid-shaped metal foil (such as Figure 2 The measuring grid and Figure 3 The resistance wire 634 in the mesh-shaped metal foil is connected to the strain gauge lead 636, as shown above Figure 3 As shown, the mesh-shaped metal foil is also covered with a covering layer 635. The effective length of the strain gauge is the length of the mesh-shaped metal foil, and the connection method of the strain gauge is determined according to the connection method of the strain gauge lead 636.

[0065] The working principle of strain gauge is to use the strain effect of resistors. That is, the external force applied to the strain gauge, or the slight deformation of the strain gauge caused by the external force, is calculated by the change in the resistance value of the measuring grid in the strain gauge. Generally, the length of the measuring grid is between 0.2mm and 30mm. The detection range of the strain gauge is related to the resistance value and length of the measuring grid. The longer the measuring grid is, the greater its resistance is. When the stress value (stress gradient) to be measured is of high accuracy, a shorter measuring grid can be used to accurately analyze the key points.

[0066] refer to Figure 4 , Figure 4 This is a circuit schematic diagram of a strain gauge provided by the prior art. Figure 4The strain gage in the figure is the strain gauge, whose resistance is R1, the excitation voltage E is the excitation voltage signal input to the system, and the output voltage e0 is the output voltage signal of the system. When measuring strain, the strain gauge forms a Wheatstone bridge to convert resistance changes into voltage changes. Assume Figure 4 The resistors in the circuit are R1, R2, R3 and R4, the input excitation voltage (V) is E, and the output voltage (V) e0 is calculated by the following formula:

[0067]

[0068] Assuming that resistor R1 is a strain gauge, its resistance change due to strain is ΔR, and the output voltage e0 is:

[0069]

[0070] If the initial conditions are set as R1=R2=R3=R4=R, then:

[0071]

[0072] Since R can be considered to be much larger than ΔR, e0 can be approximately expressed as follows:

[0073]

[0074] Among them, K s is the coefficient, and ε0 is the measured stress variable.

[0075] When the strain gauge is a full-bridge circuit, the following derivation is performed:

[0076]

[0077] Set R1 = R2 = R3 = R4 = R. Since R can be considered much larger than ΔR, after removing the high term, we get:

[0078]

[0079] The output voltage is the same as the one quarter output value output above.

[0080] It can be seen from this that the obtained output voltage e0 is proportional to the resistance change of the strain gauge (that is, the stress change), and the microscopic output voltage e0 can be amplified to indicate the measurement of stress variables.

[0081] The strain gauge is a fully sealed structure with high elongation, good moisture and heat resistance, good electrical insulation performance, and a wide operating temperature range. It can be used for precise strain measurement in the range of -80 degrees to 150 degrees. The strain gauge also has a large strain limit and can be used for various types of curved surface assembly. For example, when it is pasted on a liquid cooling pipe, it can also measure the pressure of the liquid cooling pipe. It has good resistance temperature coefficient and strain temperature coefficient, as well as stable and reliable performance, high measurement accuracy, and low cost.

[0082] However, when the liquid flows through the liquid cooling pipe, the temperature of the pipe will change with the flow rate of the liquid. The change in pipe temperature will also cause the resistance of the strain gauge to change, thereby causing the stress of the strain gauge to change.

[0083] In order to accurately measure the stress change of the strain gauge caused by the pipeline pressure and improve the accuracy of calculating the pipeline pressure, a strain gauge is currently set as a temperature compensation strain gauge. For example, a temperature compensation strain gauge is set on the inner wall of the pipeline. However, this design circuit is more complicated and needs to be replaced. The operation is complicated and the cost is high. Another method is to set the temperature compensation strain gauge outside the pipeline. However, the temperature compensation strain gauge located outside the pipeline cannot accurately sense the temperature inside the pipeline, and the measured result of the change in pipeline pressure is not accurate.

[0084] The present application provides a method for detecting the internal pressure of a liquid cooling pipe. Figure 1 , Figure 1 1 is a flow chart of a method for detecting the internal pressure of a liquid cooling pipe provided in an embodiment of the present application, comprising:

[0085] Step S11, obtaining a pipe temperature parameter value and a pipe stress variable value of the liquid cooling pipe at the current moment, wherein the pipe temperature parameter value is measured by a temperature sensor disposed on the inner wall of the liquid cooling pipe, and the pipe stress variable value is measured by a strain gauge disposed on the inner wall of the liquid cooling pipe;

[0086] Step S12, selecting a temperature stress variable value corresponding to the pipeline temperature parameter value from the temperature strain database, wherein the temperature stress variable value is used to characterize the change in stress of the strain gauge itself caused by temperature change, and the temperature strain database records: multiple temperature stress variable values ​​of the strain gauge, and the corresponding relationship between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value;

[0087] Step S13, correcting the pipe stress variable value of the liquid cooling pipe according to the temperature stress variable value corresponding to the pipe temperature parameter value, to obtain a corrected stress variable value of the liquid cooling pipe at the current moment;

[0088] Step S14, calculating the internal pressure value of the liquid cooling pipeline at the current moment according to the pipeline performance information of the liquid cooling pipeline and the modified stress variable value obtained in advance.

[0089] It should be noted that when the liquid flows through the pipe, the temperature of the liquid cooling pipe will change with the flow rate of the liquid, and the temperature of the liquid cooling pipe will also cause the strain gauge attached to the inner wall of the liquid cooling pipe to produce stress variables.

[0090] Specifically, Figure 5 As shown, Figure 5 This is a structural schematic diagram of a liquid cooling pipe with a strain gauge and a temperature sensor attached thereto provided by an embodiment of the present application. A temperature sensor and a strain gauge are arranged on the inner wall of the liquid cooling pipe. The temperature sensor is located near the strain gauge, and the temperature sensor can sense the change in the temperature of the inner wall of the pipe near the strain gauge in real time. The temperature sensor is used to measure the temperature of the inner wall of the pipe in real time to obtain the pipe temperature parameter value. The strain gauge is used to measure the strain change of the surface tension in the liquid cooling pipe in real time to obtain the pipe stress variable value of the liquid cooling pipe, and the strain gauge is a strain sensor. Among them, the pipe stress variable value is directly measured by the strain gauge, but the pipe stress variable value measured by the strain gauge may include the change in the strain gauge's own stress caused by the change in the pipe temperature.

[0091] When the strain gauge is pasted on the inner wall of the liquid cooling pipe, it can be arranged in a variety of ways. For example, the strain gauge is arranged in a ring shape on the inner wall of the liquid cooling pipe in a direction perpendicular to the liquid cooling pipe, or the strain gauge is arranged on the inner wall of the liquid cooling pipe along the axial direction of the liquid cooling pipe.

[0092] It should be noted that metal strain technology is relatively mature, and the selection of metal strain gauges as measuring instruments for pipeline stress variable values ​​fully meets the monitoring requirements of pipeline pressure. Therefore, this embodiment can use metal strain gauges to measure the pipeline stress variable values ​​of liquid cooling pipelines, and can also use other types of strain gauges to measure the pipeline stress variable values ​​of liquid cooling pipelines. This embodiment does not make specific limitations on this.

[0093] The temperature sensor and strain gauge can be installed on the inner wall of the liquid cooling pipe by pasting. Figure 6 As shown, Figure 6 : is a schematic diagram of a method for pasting a strain gauge on a liquid cooling pipe provided in an embodiment of the present application, wherein: Figure 6 In (a), the base of the strain gauge is attached to the inner wall of the liquid cooling pipe by adhesive, and then Figure 6 As shown in (b), a layer of adhesive is applied to the strain gauge to completely cover the strain gauge. Figure 6As shown in (c), the covered strain gauge is covered again with a waterproof layer, so that the strain gauge can be more firmly adhered to the inner wall of the pipeline and has a waterproof effect, making the measured pipeline stress variable value more accurate.

[0094] Specifically, the pipeline temperature parameter value of the liquid cooling pipeline and the pipeline stress variable value of the liquid cooling pipeline at the current moment are obtained.

[0095] Since changes in pipeline temperature will also cause changes in the strain gauge's own stress, the change in the strain gauge's own stress caused by temperature changes is taken as the temperature stress variable. Moreover, for strain gauges of different specifications and models, the change in the strain gauge's stress caused by the same pipeline temperature parameter value is also different. For any strain gauge of any specification and model, by repeatedly measuring the strain gauge's temperature stress variable caused by temperature changes, the corresponding relationship between each pipeline temperature parameter value and the strain gauge's temperature stress variable value can be established, where the temperature stress variable value is used to characterize the change in the strain gauge's own stress caused by temperature changes.

[0096] By setting different pipeline temperature parameter values ​​and measuring strain gauges of different specifications and models, a temperature strain database consisting of the corresponding relationship between the temperature stress variable values ​​of each specification and model can be obtained. The temperature strain database includes the profile information of strain gauges of multiple specifications and models, and the corresponding relationship between each temperature stress variable value of each specification and model of strain gauge and the pipeline temperature parameter value. As shown in the partial information of the temperature strain database in Table 1 below, the temperature strain database includes multiple temperature stress variable values ​​of the strain gauge pasted on the inner wall of the liquid cooling pipeline and the pipeline temperature parameter value corresponding to each temperature stress variable value.

[0097] Table 1

[0098] Pipe temperature parameter value Temperature stress variable value 0 X1 10 X2 20 X3

[0099] The pipeline temperature parameter value measured at the current moment can be searched and filtered in the temperature strain database to select the pipeline temperature parameter value and the temperature stress variable value of the strain gauge pasted on the inner wall of the liquid cooling pipeline corresponding to the pipeline parameter value.

[0100] The selected temperature stress variable value is the change in stress caused by the temperature of the liquid cooling pipe on the strain gauge itself at the current moment.

[0101] Then, according to the selected temperature stress variable value corresponding to the pipeline temperature parameter value, the pipeline stress variable value of the liquid cooling pipeline measured by the strain gauge is corrected. For example, the pipeline stress variable value is subtracted from the temperature stress variable value corresponding to the pipeline temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipeline at the current moment. Among them, the corrected stress variable value of the liquid cooling pipeline at the current moment represents the change in the stress generated by the strain gauge itself due to the temperature of the liquid cooling pipeline after elimination.

[0102] Since the internal pressure of a pressure vessel is linearly related to the stress variable value, by establishing a mathematical model, according to the pipeline performance information of the liquid cooling pipeline itself and the modified stress variable value of the liquid cooling pipeline, based on the generalized Hooke's law, the internal pressure of the liquid cooling pipeline at the current moment can be calculated, thereby realizing the monitoring of the internal pressure of the liquid cooling pipeline. Among them, the pipeline performance information includes but is not limited to the elastic modulus of the liquid cooling pipeline, the inner diameter and outer diameter of the liquid cooling pipeline, the pipeline wall thickness of the liquid cooling pipeline, etc.

[0103] It should be noted that a strain gauge can be set on the inner wall of the liquid cooling pipe. In order to increase the calculation accuracy of the internal pressure of the liquid cooling pipe, multiple strain gauges can also be set on the inner wall of the liquid cooling pipe in this embodiment. The more strain gauges there are within a certain range, the higher the calculation accuracy is. This embodiment does not specifically limit the number of strain gauges. When multiple strain gauges are set, the specifications and models of these multiple strain gauges are consistent and they are strain gauges from the same batch, so that the average value of the temperature stress variable values ​​measured by these multiple strain gauges can be calculated as the temperature stress variable value of the liquid cooling pipe.

[0104] In an optional example, when the strain gauge is pasted on the inner wall of the liquid cooling pipe, since there are many types of strain gauges, the profile information and working temperature of different types of strain gauges are different. In order to make the strain gauge firmly pasted on the inner wall of the liquid cooling pipe, different types of strain gauges require different adhesives. The corresponding relationship between strain gauge types and pasting parameters is shown in Table 2 below:

[0105] Table 2

[0106]

[0107]

[0108] Among them, EP, X, and Z represent different brands of epoxy resins, for example, EP150(-GP) represents a high-performance (General Performance, GP) epoxy resin adhesive (glue) with a model number of 150. Y, C, LD, DA, V residual stress SGK, G, LS, Y, C, K, G, LD, LE residual stress SG, Y, C, LD, LE, K, G smooth water absorption surface strain gauge, Y, C, LD, DA, V residual stress SG K, G, etc. in Table 2 represent strain gauges of different models (types).

[0109] It should be noted that the type of strain gauge and the adhesive used to stick the strain gauge only need to match, and the present invention does not specifically limit the type of strain gauge used.

[0110] It can be understood that the technical solution provided by this embodiment obtains the pipeline temperature parameter value and the pipeline stress variable value of the liquid cooling pipeline at the current moment. Since the temperature strain database records multiple temperature stress variable values ​​of the strain gauge, as well as the corresponding relationship between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value, the temperature stress variable value is used to characterize the change in stress of the strain gauge itself caused by temperature change. The temperature stress variable value corresponding to the pipeline temperature parameter value can be selected from the temperature strain database, and then the pipeline stress variable value of the liquid cooling pipeline is corrected according to the temperature stress variable value corresponding to the pipeline temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipeline at the current moment. Since the temperature sensor and the strain gauge are arranged on the inner wall of the liquid cooling pipeline, the measured value can be obtained. The pipeline temperature parameter value and pipeline stress variable value are more accurate, and the corrected corrected stress variable value is also more accurate. Therefore, according to the pipeline performance information and corrected stress variable value of the liquid cooling pipeline obtained in advance, the internal pressure value of the liquid cooling pipeline at the current moment calculated is also more accurate, and the corrected stress variable value takes into account the change in stress of the strain gauge itself caused by temperature change. The internal pressure value of the liquid cooling pipeline calculated by correcting the stress variable eliminates the influence of the strain gauge itself due to temperature change, thereby improving the calculation accuracy of the internal pressure value, making the calculated internal pressure value of the liquid cooling pipeline more accurate, and realizing more accurate monitoring of the internal pressure value of the liquid cooling pipeline, thereby solving the technical problem of simply taking the stress change of the strain gauge on the outer wall of the liquid cooling pipeline as the detection basis of the internal pressure of the liquid cooling pipeline, and the detection result is not accurate.

[0111] In a possible implementation, the temperature strain database also includes strain gauge profile information of multiple strain gauges and multiple temperature stress variable values ​​of each strain gauge, as well as a corresponding relationship between each temperature stress variable value of each strain gauge and a pipeline temperature parameter value. In step S12, the temperature stress variable value corresponding to the pipeline temperature parameter value is selected from the temperature strain database, including:

[0112] Step S121, obtaining target strain gauge profile information of the strain gauge disposed on the inner wall of the liquid cooling pipe;

[0113] Step S122, based on the target strain gauge profile information, all temperature stress variable values ​​of the strain gauges arranged on the inner wall of the liquid cooling pipe are screened out from the temperature strain database;

[0114] Step S123, selecting the temperature stress variable value corresponding to the pipeline temperature parameter value from all the temperature stress variable values ​​of the strain gauges arranged on the inner wall of the liquid cooling pipeline.

[0115] Specifically, the temperature strain database also includes strain gauge profile information of multiple strain gauges. When a temperature stress variable value corresponding to a pipeline temperature parameter value is selected from the temperature strain database, the method includes:

[0116] The strain gauge disposed on the inner wall of the liquid cooling pipe is used as the target strain gauge, and the target strain gauge profile information of the strain gauge disposed on the inner wall of the liquid cooling pipe is obtained. The acquisition method may be obtained in advance when the strain gauge is set, or may be obtained through other communication methods, which is not specifically limited in this embodiment.

[0117] According to the target strain gauge profile information, the temperature strain database is urgently searched and screened to select all the temperature stress variable values ​​of the strain gauge set on the inner wall of the liquid cooling pipe. Among them, the screened ones are all the temperature stress variables of the target strain gauge, and the pipe temperature parameter values ​​corresponding to each temperature stress variable value of the target strain gauge.

[0118] Since the pipe temperature parameter value of the liquid cooling pipe is measured by the temperature sensor, the temperature stress variable value corresponding to the pipe temperature parameter value is selected from all the temperature stress variable values ​​of the strain gauges arranged on the inner wall of the liquid cooling pipe.

[0119] In a possible implementation, when the strain gauge is arranged in a ring shape on the inner wall of the liquid cooling pipe in a direction perpendicular to the liquid cooling pipe, the pipe stress variable value is a circumferential stress variable value. In step S13, the pipe stress variable value of the liquid cooling pipe is corrected according to the temperature stress variable value corresponding to the pipe temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipe at the current moment, including:

[0120] The temperature stress variable value corresponding to the pipeline temperature parameter value is subtracted from the circumferential stress variable value to obtain the circumferential corrected stress variable value of the liquid cooling pipeline at the current moment.

[0121] Specifically, when the strain gauge is pasted on the inner wall of the liquid cooling pipe, when the strain gauge is pasted on the inner wall of the liquid cooling pipe in a ring shape in a direction perpendicular to the liquid cooling pipe, the pipe stress variable value measured by the strain gauge is the circumferential stress variable value, represented by ε0, and its direction is along the direction of the liquid cooling pipe, such as Fig.10 As shown, Fig.10 This is a schematic diagram of force analysis inside a liquid cooling pipe provided in one embodiment of the present application.

[0122] At this time, according to the temperature stress variable value corresponding to the pipeline temperature parameter value, the pipeline stress variable value of the liquid cooling pipeline is corrected, and the corrected stress variable value of the liquid cooling pipeline at the current moment is the circumferential corrected stress variable value of the liquid cooling pipeline, specifically:

[0123] The measured circumferential stress variable value ε0 is subtracted from the temperature stress variable value ε corresponding to the pipeline temperature parameter value obtained from the temperature strain database to obtain the circumferential corrected stress variable value ε of the liquid cooling pipeline at the current moment. y :

[0124] ε y =ε0-ε.

[0125] like Fig.10 As shown, ε y That is, the corrected circumferential stress variable value of the liquid cooling pipe at the current moment, and its direction is along the direction of the liquid cooling pipe.

[0126] In a possible implementation, in step S14, the internal pressure value of the liquid cooling pipeline at the current moment is calculated based on the pipeline performance information and the modified stress variable value of the liquid cooling pipeline obtained in advance, including:

[0127] According to the previously acquired pipeline performance information of the liquid cooling pipeline and the circumferential corrected stress variable value, such as Fig.10 As shown, according to the following formula, the internal pressure value P of the liquid cooling pipeline at the current moment is calculated:

[0128]

[0129] Among them, E is a constant, which represents the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant, which represents the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε y Indicates the circumferential modified stress variable value of the liquid cooling pipe at the current moment.

[0130] Specifically, when the strain gauge is annularly pasted on the inner wall of the liquid cooling pipe in a direction perpendicular to the liquid cooling pipe, the above correction obtains the circumferential corrected stress variable value of the liquid cooling pipe. According to the pre-acquired pipeline performance information and the corrected stress variable value of the liquid cooling pipe, the internal pressure value of the liquid cooling pipe at the current moment is calculated, including:

[0131] The pipeline performance information of the liquid cooling pipeline is obtained in advance, and the acquisition method includes directly measuring it or obtaining it based on information provided by the manufacturer during production, which is not specifically limited in this embodiment.

[0132] It should be noted that under the action of the internal pressure of the liquid cooling pipe, axial stress and circumferential stress are generated on the outer wall and the inner wall of the liquid cooling pipe. Under the action of these two stresses, corresponding axial strain and circumferential strain are generated, among which the axial strain is the axial modified stress variable and the circumferential strain is the circumferential stress variable.

[0133] According to the previously acquired pipeline performance information and circumferential modified stress variable value of the liquid cooling pipeline, according to Hooke's law, the internal pressure value P of the liquid cooling pipeline at the current moment is calculated according to the following formula:

[0134]

[0135] Among them, E is a constant, which represents the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant, which represents the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε y Indicates the circumferential modified stress variable value of the liquid cooling pipe at the current moment. The unit of the elastic modulus of the liquid cooling pipe is MPa.

[0136] It should be noted that the elastic modulus and Poisson's ratio of the liquid cooling pipe are two basic material constants, which are related to the elastic properties of the material of the liquid cooling pipe, wherein the Poisson's ratio is the lateral deformation elastic constant of the material of the liquid cooling pipe.

[0137] Among them, since the pipeline performance information of the liquid cooling pipeline is a known constant, the internal pressure value P of the liquid cooling pipeline at the current moment can also be expressed by the following formula:

[0138] P=Kε y ,

[0139] Wherein, K is a constant calculated based on pipeline performance information.

[0140] In a possible implementation, when the strain gauge is arranged on the inner wall of the liquid cooling pipe along the axial direction of the liquid cooling pipe, the pipe stress variable value is an axial stress variable value. In step 13, the pipe stress variable value of the liquid cooling pipe is corrected according to the temperature stress variable value corresponding to the pipe temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipe at the current moment, including:

[0141] The temperature stress variable value corresponding to the pipeline temperature parameter value is subtracted from the axial stress variable value to obtain the axial corrected stress variable value of the liquid cooling pipeline at the current moment.

[0142] Specifically, when the strain gauge is pasted on the inner wall of the liquid cooling pipe, when the strain gauge is pasted on the inner wall of the liquid cooling pipe along the axial direction of the liquid cooling pipe, the pipe stress variable value measured by the strain gauge is the axial stress variable value, which is also ε0, but its direction is perpendicular to the liquid cooling pipe.

[0143] At this time, according to the temperature stress variable value corresponding to the pipeline temperature parameter value, the pipeline stress variable value of the liquid cooling pipeline is corrected, and the corrected stress variable value of the liquid cooling pipeline at the current moment is the circumferential corrected stress variable value of the liquid cooling pipeline, specifically:

[0144] The measured axial stress variable value is subtracted from the temperature stress variable value ε corresponding to the pipeline temperature parameter value obtained from the temperature strain database to obtain the axial corrected stress variable value ε of the liquid cooling pipeline at the current moment. x :

[0145] ε x =ε0-ε.

[0146] like Fig.10 As shown, ε x That is, the corrected axial stress variable value of the liquid cooling pipe at the current moment, and its direction is along the direction perpendicular to the liquid cooling pipe.

[0147] In a possible implementation, in step S14, the internal pressure value of the liquid cooling pipeline at the current moment is calculated based on the pipeline performance information and the modified stress variable value of the liquid cooling pipeline obtained in advance, including:

[0148] According to the previously acquired pipeline performance information and axial modified stress variable value of the liquid cooling pipeline, the internal pressure value P of the liquid cooling pipeline at the current moment is calculated according to the following formula:

[0149]

[0150] Among them, E is a constant, which represents the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant, which represents the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε x Indicates the axial modified stress variable value of the liquid cooling pipe at the current moment.

[0151] Specifically, when the strain gauge is attached to the inner wall of the liquid cooling pipe along the axial direction of the liquid cooling pipe, the above correction obtains the axial corrected stress variable value of the liquid cooling pipe. According to the pre-acquired pipe performance information and the corrected stress variable value of the liquid cooling pipe, the internal pressure value of the liquid cooling pipe at the current moment is calculated, including:

[0152] The pipeline performance information of the liquid cooling pipeline is obtained in advance. According to the pipeline performance information of the liquid cooling pipeline obtained in advance and the axial corrected stress variable value, the internal pressure value P of the liquid cooling pipeline at the current moment is calculated according to the following formula:

[0153]

[0154] Among them, E is a constant, which represents the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant, which represents the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε x Indicates the axial modified stress variable value of the liquid cooling pipe at the current moment.

[0155] It should be noted that the axial strain and circumferential strain generated by the axial stress and circumferential stress in the pressure vessel are both proportional to the internal pressure value, so the circumferential stress variable value and the axial stress variable value of the liquid cooling pipe are also proportional, and the circumferential stress variable value is twice the axial stress variable value, so the internal pressure value of the liquid cooling pipe can be calculated based on any one of the circumferential stress variable value or the axial stress variable value. The calculation formulas for the circumferential stress variable value and the axial stress variable value are as follows:

[0156]

[0157] It can be seen that the circumferential stress variable value is twice the axial stress variable value.

[0158] In a possible implementation, the method further includes: a distance between a strain gauge disposed on an inner wall of the liquid cooling pipe and a temperature sensor disposed on the inner wall of the liquid cooling pipe is within a preset range.

[0159] Specifically, in order to improve the calculation accuracy of the corrected stress variable value of the corrected liquid cooling pipeline, the pasting distance between the temperature sensor and the strain gauge must be close enough so that the measured pipeline temperature parameter value and the measured pipeline stress variable value are at the same position, thereby setting the distance between the strain gauge and the temperature sensor within a preset range, which can reduce errors and improve the accuracy of the calculated corrected stress variable value, making the calculated internal pressure value of the liquid cooling pipeline more accurate.

[0160] In a possible implementation, the method further includes:

[0161] The above-obtained or calculated pipeline temperature parameter values, pipeline stress variable values, internal pressure values ​​of the liquid cooling pipeline, and temperature stress variable values ​​corresponding to the pipeline temperature parameter values ​​are all displayed in real time.

[0162] It should be noted that one or more strain gauges can be selected to be pasted on the inner wall of the liquid cooling pipe. For the connection method of the strain gauges, a quarter-bridge system, a half-bridge system or a full-bridge system can be configured according to different measurement requirements, and this embodiment does not make any specific limitations.

[0163] For example: When a simple connection method is required, a quarter-bridge system is selected, such as Figure 8 As shown, Figure 8 This is a circuit schematic diagram of another strain gauge provided in another embodiment of the present application. The quarter-bridge system is composed of a strain gauge and three fixed resistors. Figure 8 Where Strain gage Rg is the strain gauge Rg, R is the fixed resistor, E is the excitation voltage signal input to the system, and e0 is the output voltage signal of the system. Since the system is easy to configure, it is widely used in strain measurement. Figure 8 (a) is a quarter double bridge system, which has a simple structure. However, when the wire is too long or affected by temperature, some resistance will be added to the bridge arm, which may easily lead to inaccurate measurement. Figure 8 (b) is a quarter-bridge three-wire system, which adds a wire (usually a compensation wire) to introduce the changing resistance part into the adjacent bridge arm, eliminating the influence of temperature change on the wire resistance and leaving the output voltage unaffected. Therefore, when the temperature change is large or the lead length is long, the quarter-bridge three-wire system can be used.

[0164] When it is necessary to eliminate the influence of external factors on the strain gauge, a half-bridge system is generally selected. Figure 7 As shown, Figure 7 is a circuit schematic diagram of a strain gauge provided in an embodiment of the present application. In this system, two working strain gauges ( Figure 7 The active strain gage Rg1 and strain gage Rg2 in the figure are connected to the bridge, each working strain gage is connected to the adjacent or opposite bridge, and the others are fixed resistors ( Figure 7 One of the working strain gauges is used as a virtual strain gauge for temperature compensation ( Figure 7 Dummy or active Strain gage in the target strain gauge to eliminate the strain components other than the target strain gauge.

[0165] When the strain state of an object needs to be fully sensed, a full-bridge system is selected. Fig. 9 As shown, Fig. 9 is a circuit schematic diagram of another strain gauge provided in another embodiment of the present application. The system is provided with 4 strain gauges ( Fig. 9Rg1, Rg2, Rg3 and Rg4) in the figure can significantly improve the sensitivity and accuracy of strain measurement through the amplification effect of the bridge circuit.

[0166] It can be understood that the technical solution provided by this embodiment obtains the pipeline temperature parameter value and the pipeline stress variable value of the liquid cooling pipeline at the current moment. Since the temperature strain database records multiple temperature stress variable values ​​of the strain gauge, as well as the corresponding relationship between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value, the temperature stress variable value is used to characterize the change in stress of the strain gauge itself caused by temperature change. The temperature stress variable value corresponding to the pipeline temperature parameter value can be selected from the temperature strain database, and then the pipeline stress variable value of the liquid cooling pipeline is corrected according to the temperature stress variable value corresponding to the pipeline temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipeline at the current moment. Since the temperature sensor and the strain gauge are arranged on the inner wall of the liquid cooling pipeline, the measured value can be obtained. The obtained pipeline temperature parameter value and pipeline stress variable value are more accurate, and the corrected corrected stress variable value is also more accurate. Therefore, according to the pipeline performance information and corrected stress variable value of the liquid cooling pipeline obtained in advance, the internal pressure value of the liquid cooling pipeline at the current moment calculated is also more accurate, and the corrected stress variable value eliminates the change of stress of the strain gauge itself caused by temperature change, so that the internal pressure value of the liquid cooling pipeline calculated by the corrected stress variable is not affected by the strain gauge itself, thereby improving the calculation accuracy of the internal pressure value, making the calculated internal pressure value of the liquid cooling pipeline more accurate, and realizing more accurate monitoring of the internal pressure value of the liquid cooling pipeline, thereby solving the technical problem of simply taking the stress change of the strain gauge on the outer wall of the liquid cooling pipeline as the detection basis of the internal pressure of the liquid cooling pipeline, and the detection result is not accurate.

[0167] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. 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.

[0168] Corresponding to the method described in the above embodiment, Fig.11 A structural schematic diagram of an internal pressure detection device for a liquid cooling pipe provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0169] Reference Fig.11 The internal pressure detection device 2 of the liquid cooling pipeline includes:

[0170] The data acquisition module 21 is used to obtain the pipeline temperature parameter value and the pipeline stress variable value of the liquid cooling pipeline at the current moment, wherein the pipeline temperature parameter value is measured by a temperature sensor attached to the inner wall of the liquid cooling pipeline, and the pipeline stress variable value is measured by a strain gauge set on the inner wall of the liquid cooling pipeline;

[0171] The stress data query module 22 is used to select a temperature stress variable value corresponding to the pipeline temperature parameter value from the temperature strain database, wherein the temperature stress variable value is used to characterize the change in stress of the strain gauge itself caused by temperature change. The temperature strain database records: multiple temperature stress variable values ​​of the strain gauge, and the corresponding relationship between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value;

[0172] The stress variable correction module 23 is used to correct the pipeline stress variable value of the liquid cooling pipeline according to the temperature stress variable value corresponding to the pipeline temperature parameter value, so as to obtain the corrected stress variable value of the liquid cooling pipeline at the current moment;

[0173] The internal pressure calculation module 24 is used to calculate the internal pressure value of the liquid cooling pipeline at the current moment according to the pipeline performance information and the modified stress variable value of the liquid cooling pipeline obtained in advance.

[0174] In a possible implementation, the temperature strain database also includes strain gauge profile information of multiple strain gauges and multiple temperature stress variable values ​​of each strain gauge, as well as a corresponding relationship between each temperature stress variable value of each strain gauge and the pipeline temperature parameter value. When selecting a temperature stress variable value corresponding to the pipeline temperature parameter value from the temperature strain database, the stress data query module 22 is specifically used to obtain target strain gauge profile information of the strain gauge set on the inner wall of the liquid cooling pipeline; according to the target strain gauge profile information, all temperature stress variable values ​​of the strain gauge set on the inner wall of the liquid cooling pipeline are screened out from the temperature strain database; and the temperature stress variable value corresponding to the pipeline temperature parameter value is selected from all the temperature stress variable values ​​of the strain gauge set on the inner wall of the liquid cooling pipeline.

[0175] In a possible implementation, when the strain gauge is arranged in a ring shape on the inner wall of the liquid cooling pipe in a direction perpendicular to the liquid cooling pipe, the pipe stress variable value is a circumferential stress variable value. According to the temperature stress variable value corresponding to the pipe temperature parameter value, the pipe stress variable value of the liquid cooling pipe is corrected to obtain the corrected stress variable value of the liquid cooling pipe at the current moment. The stress variable correction module 23 is specifically used to subtract the temperature stress variable value corresponding to the pipe temperature parameter value from the circumferential stress variable value to obtain the circumferential corrected stress variable value of the liquid cooling pipe at the current moment.

[0176] In a possible implementation, the internal pressure value of the liquid cooling pipeline at the current moment is calculated based on the pipeline performance information and the modified stress variable value of the liquid cooling pipeline obtained in advance. The internal pressure calculation module 24 is specifically used to calculate the internal pressure value P of the liquid cooling pipeline at the current moment according to the following formula based on the pipeline performance information and the circumferential modified stress variable value of the liquid cooling pipeline obtained in advance:

[0177]

[0178] Among them, E is a constant, which represents the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant, which represents the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε y Indicates the circumferential modified stress variable value of the liquid cooling pipe at the current moment.

[0179] In a possible implementation, when the strain gauge is arranged on the inner wall of the liquid cooling pipe along the axial direction of the liquid cooling pipe, the pipe stress variable value is an axial stress variable value. According to the temperature stress variable value corresponding to the pipe temperature parameter value, the pipe stress variable value of the liquid cooling pipe is corrected to obtain the corrected stress variable value of the liquid cooling pipe at the current moment. The stress variable correction module 23 is specifically used to subtract the temperature stress variable value corresponding to the pipe temperature parameter value from the axial stress variable value to obtain the corrected axial stress variable value of the liquid cooling pipe at the current moment.

[0180] In a possible implementation, the internal pressure value of the liquid cooling pipeline at the current moment is calculated based on the pipeline performance information and the modified stress variable value of the liquid cooling pipeline obtained in advance. The internal pressure calculation module 24 is specifically used to calculate the internal pressure value P of the liquid cooling pipeline at the current moment according to the following formula based on the pipeline performance information and the axial modified stress variable value of the liquid cooling pipeline obtained in advance:

[0181]

[0182] Among them, E is a constant, which represents the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant, which represents the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε x Indicates the axial modified stress variable value of the liquid cooling pipe at the current moment.

[0183] In a possible implementation, in the data acquisition module 21 , a distance between a strain gauge disposed on an inner wall of the liquid cooling pipe and a temperature sensor disposed on the inner wall of the liquid cooling pipe is within a preset range.

[0184] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0185] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0186] The present application also provides a liquid cooling pipe internal pressure detection device 6, such as Fig.12 As shown, the device includes: a display system 61, a power supply system 62, a strain gauge 63, a temperature sensor 64 and an internal pressure detection device 2 of a liquid cooling pipe;

[0187] Wherein, the temperature sensor 64 is used to measure the pipe temperature parameter value of the liquid cooling pipe;

[0188] The strain gauge 63 is used to measure the pipe stress variable value of the liquid cooling pipe;

[0189] A display system 61 is used to display the pipeline temperature parameter value, the pipeline stress variable value and the internal pressure value of the liquid cooling pipeline;

[0190] A power supply system 62, used to supply power to the display system, the temperature sensor and the strain gauge;

[0191] The internal pressure detection device of the liquid cooling pipe is used to execute the steps in the above-mentioned various method embodiments.

[0192] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0193] An embodiment of the present application provides a computer program product. When the computer program product runs on an internal pressure detection device of a liquid cooling pipe, the internal pressure detection device of the liquid cooling pipe can implement the steps in the above-mentioned various method embodiments when executing.

[0194] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0195] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0196] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0197] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0198] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0199] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for detecting the internal pressure of a liquid cooling pipe, characterized in that: include: Obtaining a pipeline temperature parameter value of a liquid cooling pipeline and a pipeline stress variable value of the liquid cooling pipeline at the current moment, wherein the pipeline temperature parameter value is measured by a temperature sensor disposed on the inner wall of the liquid cooling pipeline, and the pipeline stress variable value is measured by a strain gauge disposed on the inner wall of the liquid cooling pipeline; Selecting a temperature stress variable value corresponding to the pipeline temperature parameter value from a temperature strain database, wherein the temperature stress variable value is used to characterize the change in stress of the strain gauge itself caused by temperature change, and the temperature strain database records: multiple temperature stress variable values ​​of the strain gauge, and the corresponding relationship between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value; According to the temperature stress variable value corresponding to the pipeline temperature parameter value, the pipeline stress variable value of the liquid cooling pipeline is corrected to obtain the corrected stress variable value of the liquid cooling pipeline at the current moment; The internal pressure value of the liquid cooling pipeline at the current moment is calculated based on the pipeline performance information of the liquid cooling pipeline and the modified stress variable value acquired in advance.

2. The method for detecting the internal pressure of a liquid cooling pipe according to claim 1, characterized in that: The temperature strain database also includes strain gauge profile information of multiple strain gauges and multiple temperature stress variable values ​​of each strain gauge, as well as a corresponding relationship between each temperature stress variable value of each strain gauge and a pipeline temperature parameter value. The step of selecting a temperature stress variable value corresponding to the pipeline temperature parameter value from the temperature strain database includes: Acquire target strain gauge profile information of the strain gauge disposed on the inner wall of the liquid cooling pipe; According to the target strain gauge profile information, all temperature stress variable values ​​of the strain gauges arranged on the inner wall of the liquid cooling pipe are screened out from the temperature strain database; The temperature stress variable value corresponding to the pipeline temperature parameter value is selected from all the temperature stress variable values ​​of the strain gauges arranged on the inner wall of the liquid cooling pipeline.

3. The method for detecting the internal pressure of a liquid cooling pipe according to claim 1, characterized in that: In the case where the strain gauge is arranged in a ring shape on the inner wall of the liquid cooling pipe in a direction perpendicular to the liquid cooling pipe, the pipe stress variable value is a circumferential stress variable value, and the pipe stress variable value of the liquid cooling pipe is corrected according to the temperature stress variable value corresponding to the pipe temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipe at the current moment, including: The temperature stress variable value corresponding to the pipeline temperature parameter value is subtracted from the circumferential stress variable value to obtain the circumferential modified stress variable value of the liquid cooling pipeline at the current moment.

4. The method for detecting the internal pressure of a liquid cooling pipe according to claim 3, characterized in that: The calculating the internal pressure value of the liquid cooling pipeline at the current moment according to the pipeline performance information of the liquid cooling pipeline and the modified stress variable value obtained in advance includes: According to the pre-acquired pipeline performance information of the liquid cooling pipeline and the circumferential modified stress variable value, the internal pressure value P of the liquid cooling pipeline at the current moment is calculated according to the following formula: Wherein, E is a constant representing the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant representing the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε y It represents the circumferential modified stress variable value of the liquid cooling pipe at the current moment.

5. The method for detecting the internal pressure of a liquid cooling pipe according to claim 1, characterized in that: In the case where the strain gauge is arranged along the axial direction of the liquid cooling pipe on the inner wall of the liquid cooling pipe, the pipe stress variable value is an axial stress variable value, and the pipe stress variable value of the liquid cooling pipe is corrected according to the temperature stress variable value corresponding to the pipe temperature parameter value to obtain the corrected stress variable value of the liquid cooling pipe at the current moment, including: The temperature stress variable value corresponding to the pipeline temperature parameter value is subtracted from the axial stress variable value to obtain the axial corrected stress variable value of the liquid cooling pipeline at the current moment.

6. The method for detecting the internal pressure of a liquid cooling pipe according to claim 5, characterized in that: The calculating the internal pressure value of the liquid cooling pipeline at the current moment according to the pipeline performance information of the liquid cooling pipeline and the modified stress variable value obtained in advance includes: According to the pre-acquired pipeline performance information of the liquid cooling pipeline and the axial modified stress variable value, the internal pressure value P of the liquid cooling pipeline at the current moment is calculated according to the following formula: Wherein, E is a constant representing the elastic modulus of the liquid cooling pipe, t represents the pipe wall thickness of the liquid cooling pipe, μ is a constant representing the Poisson's ratio, D represents the average value of the inner diameter and the outer diameter of the liquid cooling pipe, and ε x It represents the axial modified stress variable value of the liquid cooling pipe at the current moment.

7. The method for detecting the internal pressure of a liquid cooling pipe according to any one of claims 1 to 6, characterized in that: The distance between the strain gauge arranged on the inner wall of the liquid cooling pipe and the temperature sensor arranged on the inner wall of the liquid cooling pipe is within a preset range.

8. An internal pressure detection device for a liquid cooling pipe, characterized in that: include: A data acquisition module, used to obtain a pipe temperature parameter value of the liquid cooling pipe and a pipe stress variable value of the liquid cooling pipe at the current moment, wherein the pipe temperature parameter value is measured by a temperature sensor attached to the inner wall of the liquid cooling pipe, and the pipe stress variable value is measured by a strain gauge arranged on the inner wall of the liquid cooling pipe; A stress data query module is used to select a temperature stress variable value corresponding to the pipeline temperature parameter value from a temperature strain database, wherein the temperature stress variable value is used to characterize the change in stress of the strain gauge itself caused by temperature change, and the temperature strain database records: multiple temperature stress variable values ​​of the strain gauge, and the corresponding relationship between each temperature stress variable value of the strain gauge and the pipeline temperature parameter value; A stress variable correction module, used to correct the pipeline stress variable value of the liquid cooling pipeline according to the temperature stress variable value corresponding to the pipeline temperature parameter value, so as to obtain the corrected stress variable value of the liquid cooling pipeline at the current moment; The internal pressure calculation module is used to calculate the internal pressure value of the liquid cooling pipeline at the current moment according to the pipeline performance information of the liquid cooling pipeline and the modified stress variable value acquired in advance.

9. An internal pressure detection device for a liquid cooling pipe, comprising: Display system, power system, strain gauges, temperature sensors and internal pressure detection devices for liquid cooling pipes; Wherein, the temperature sensor is used to measure the pipe temperature parameter value of the liquid cooling pipe; The strain gauge is used to measure the pipeline stress variable value of the liquid cooling pipeline; The display system is used to display the pipeline temperature parameter value, the pipeline stress variable value and the internal pressure value of the liquid cooling pipeline; The power supply system is used to supply power to the display system, the temperature sensor and the strain gauge; The internal pressure detection device of the liquid cooling pipe is used to execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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