Liquid cooling capacity distribution unit and water leakage detection method thereof

Abstract

The embodiment of the invention provides a liquid cooling capacity distribution unit and a water leakage detection method thereof, and the method comprises the steps: judging whether the cooling capacity distribution unit leaks water or not according to the voltage output values of a plurality of frequency sensors arranged on a water collection disc of the cooling capacity distribution unit, judging that the cooling capacity distribution unit leaks water; and according to the phase difference of the induced electromotive forces of the plurality of frequency sensors, the distance from the water leakage dripping point to each frequency sensor is calculated for positioning the water leakage dripping point. According to the invention, the problems of large errors, low accuracy and insufficient positioning detection capability of water leakage detection and water leakage point positioning of the liquid cooling capacity distribution unit in the prior art are solved, and the effect of improving the water leakage detection accuracy, namely the positioning detection capability, of the liquid cooling capacity distribution unit is achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of data center cooling, and in particular, to a liquid cooling capacity distribution unit and a water leakage detection method thereof. Background Art

[0002] With the rapid development of big data, the Internet of Things, and artificial intelligence technologies, the demand for high-power computing servers is increasing day by day. At the same time, the heat generated by data centers is also increasing. The heat dissipation effect of traditional air cooling technology on high-power density chips is almost close to the limit. The more efficient liquid cooling technology has developed rapidly because it can better solve the heat dissipation problem of high-power density chips.

[0003] Liquid cooling technology uses liquid working fluid to directly or indirectly contact heat-generating components to complete heat exchange. There may be a risk of leakage during liquid transportation, which may harm the heat exchange effect and even the normal operation of electronic equipment. Existing cooling distribution units mostly detect water leakage in units and computer rooms by adding water immersion sensors, but there are problems such as large errors, low accuracy, and insufficient positioning detection capabilities. Summary of the invention

[0004] The embodiment of the present invention provides a liquid-cooled cooling capacity distribution unit and a water leakage detection method thereof, so as to at least solve the problems of large water leakage detection and positioning error, low accuracy and insufficient positioning detection capability of the liquid-cooled cooling capacity distribution unit in the related art.

[0005] According to one embodiment of the present invention, a method for detecting water leakage of a liquid-cooled cold distribution unit is provided, comprising: judging whether water leakage occurs in the cold distribution unit based on voltage output values ​​of a plurality of frequency sensors arranged on a water collecting tray of the cold distribution unit, wherein when the voltage output values ​​change, it is judged that water leakage occurs in the cold distribution unit; and calculating the distance from a water leakage dripping point to each of the frequency sensors based on a phase difference of the induced electromotive forces of the plurality of frequency sensors, for locating the water leakage dripping point.

[0006] According to another embodiment of the present invention, a liquid-cooled cold capacity distribution unit is provided, comprising: a plurality of frequency sensors are arranged on a water collecting tray of the cold capacity distribution unit, and a control system of the cold capacity distribution unit comprises: a water leakage judgment module, for judging whether the cold capacity distribution unit has a water leakage according to the voltage output values ​​of the plurality of frequency sensors, wherein when the voltage output values ​​change, it is judged that the cold capacity distribution unit has a water leakage; a water leakage positioning module, for calculating the distance from a water leakage dripping point to each of the frequency sensors according to the phase difference of the induced electromotive force of the plurality of frequency sensors, for positioning the water leakage dripping point.

[0007] The present invention provides a method for detecting water leakage of a liquid-cooled cold distribution unit. The method determines whether the cold distribution unit is leaking according to the voltage output values ​​of multiple frequency sensors arranged on the water collecting tray of the cold distribution unit, wherein when the voltage output value changes, the cold distribution unit is determined to be leaking; and the distance from the leaking dripping point to each frequency sensor is calculated according to the phase difference of the induced electromotive force of the multiple frequency sensors, which is used to locate the leaking dripping point. The method solves the problems of large error, low accuracy, and insufficient positioning detection capability in water leakage detection and water leakage point positioning of the liquid-cooled cold distribution unit in the related art, and achieves the effect of improving the accuracy of water leakage detection, i.e., positioning detection capability, of the liquid-cooled cold distribution unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the framework of the water leakage detection system of the cooling capacity distribution unit according to an embodiment of the present invention;

[0009] Figure 2 is a flow chart of a water leakage detection method of a liquid-cooled cooling capacity distribution unit according to an embodiment of the present invention;

[0010] Figure 3 is a structural block diagram of a control system of a liquid cooling cooling capacity distribution unit according to an embodiment of the present invention;

[0011] Figure 4 is a structural block diagram of a control system of a liquid cooling cooling capacity distribution unit according to an embodiment of the present invention;

[0012] Figure 5 is a structural block diagram of a water leakage judgment module of a liquid cooling cooling capacity distribution unit control system according to an embodiment of the present invention;

[0013] Figure 6 is a structural block diagram of a water leakage positioning module of a liquid cooling cooling capacity distribution unit control system according to an embodiment of the present invention;

[0014] Figure 7 is a structural block diagram of a liquid cooling capacity distribution unit control system according to a scenario embodiment of the present invention;

[0015] Figure 8 is a schematic diagram of the principle of a frequency sensor according to a scenario embodiment of the present invention;

[0016] Fig. 9 is an example diagram of frequency sensor arrangement and water leakage detection according to a scenario embodiment of the present invention;

[0017] Fig.10 It is a schematic diagram of the principle of the water leakage detection and alarm information output process according to the scenario embodiment of the present invention. DETAILED DESCRIPTION

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and in combination with the embodiments.

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0020] In the related technology, the cooling distribution unit usually detects water leakage in the unit and the machine room by adding water immersion sensors. The linear sensor detects water leakage by using the conductive properties of the liquid, which is prone to false alarms due to contact with the conductor. The water immersion rope needs to be laid in the area prone to water leakage, which has a certain detection blind spot and will be unsightly due to the long water immersion rope. The point sensor detects water leakage by using the conductive properties or photoelectric effect, but its coverage area is small and cannot complete large-area detection. Moreover, most of the current water immersion sensors are non-positioning water immersion sensors, which cannot quickly determine the leakage point and conduct investigation. Although there are positioning linear sensors, they still cannot avoid the limitations of water immersion rope detection, and the location of the leakage point is realized by the change of resistance per unit length after immersion in water, which is prone to false alarms and relatively large errors.

[0021] In view of the above problems and shortcomings, an embodiment of the present invention introduces a frequency sensor into the Coolant Distribution Unit (CDU) system to detect the water leakage status of the system according to the difference in vibration frequency when the water collecting pan is in the water-free state and the water-free state; and locates the water leakage point according to the phase difference of the induced electromotive force of each sensor in the water leakage state, so as to facilitate rapid troubleshooting and timely avoidance of the risks caused by water leakage.

[0022] The present application embodiment can be run on Figure 1 In the system architecture shown, Figure 1 : is a schematic diagram of the framework of the water leakage detection system of the cooling capacity distribution unit according to an embodiment of the present invention. Figure 1 As shown, the cooling capacity distribution unit consists of a primary side, a secondary side, a control system and other components. Its main components include: a primary side electric regulating valve 1, a plate heat exchanger 2, a 1# circulation pump 3, a 2# circulation pump 4, a secondary side electric regulating valve 5, a water collecting pan 6, a control system 7 and four frequency sensors 8-11 arranged at the top of the water collecting pan. Among them, the circulation pump can be selected in a one-in-one-standby mode or a dual-use mode according to user needs. Among them, the control system can perform initial parameter settings, parameter acquisition and calculation, etc.

[0023] In this embodiment, a water leakage detection method for a liquid cooling cooling capacity distribution unit running in a system architecture is provided. Figure 2 is a flow chart of a water leakage detection method for a liquid cooling cooling capacity distribution unit according to an embodiment of the present invention. Figure 2As shown, the process includes the following steps:

[0024] Step S202, judging whether the cooling distribution unit is leaking according to the voltage output values ​​of a plurality of frequency sensors arranged on the water collecting pan of the cooling distribution unit, wherein if the voltage output value changes, it is judged that the cooling distribution unit is leaking;

[0025] In an exemplary embodiment, before judging whether the cold distribution unit is leaking based on the voltage output values ​​of multiple frequency sensors arranged on the water collecting tray of the cold distribution unit, it also includes: setting the initial vibration frequency of the water collecting tray based on the operation status of the circulation pump of the cold distribution unit.

[0026] In an exemplary embodiment, when the voltage output value changes, it is determined that the cold capacity distribution unit is leaking, including: calculating the initial voltage value of each frequency sensor based on the initial vibration frequency of the water collection tray; calculating the difference between the voltage output value of each frequency sensor and the initial voltage value, and when the absolute value of the difference is greater than 0, it is determined that the cold capacity distribution unit is leaking.

[0027] In the actual implementation process, the initial vibration frequency of the water collection tray is set according to the operation of the circulation pump of the cooling distribution unit, and then the initial voltage value of each frequency sensor is calculated according to the initial vibration frequency of the water collection tray. The voltage output value of the frequency sensor can be obtained more accurately, and water leakage detection can be performed more accurately.

[0028] Step S204, calculating the distance from the water leakage drop point to each frequency sensor according to the phase difference of the induced electromotive force of multiple frequency sensors, so as to locate the water leakage drop point.

[0029] In an exemplary embodiment, the distance from the water leakage dripping point to each frequency sensor is calculated based on the phase difference of the induced electromotive force of multiple frequency sensors to locate the water leakage dripping point, including: mathematically modeling the spatial position of each point on the water collection tray to obtain the coordinates of each frequency sensor; obtaining the coordinates of the water leakage dripping point based on the phase difference of the induced electromotive force of multiple frequency sensors and the distance from the water leakage dripping point to each frequency sensor.

[0030] In an exemplary embodiment, mathematical modeling is performed on the spatial position of each point on the water collection tray, including: establishing a plane rectangular coordinate system with the position of the first frequency sensor as the origin, the direction of the line connecting the first frequency sensor and the second frequency sensor as the X-axis, and the direction of the line connecting the first frequency sensor and the third frequency sensor as the Y-axis.

[0031] In the actual implementation process, after establishing the plane rectangular coordinate system, the coordinates of each frequency sensor can be obtained based on the plane rectangular coordinate system. In the actual implementation process, the number of frequency sensors is at least 4, and the specific multiple frequency sensors can include a first frequency sensor, a second frequency sensor, a third frequency sensor, and a fourth frequency sensor. The above at least 4 frequency sensors can be arranged on the water collection tray and cannot be arranged on the same straight line.

[0032] In an exemplary embodiment, the coordinates of the leaking dripping point are obtained according to the phase difference of the induced electromotive force of multiple frequency sensors and the distance from the leaking dripping point to each frequency sensor, including: according to the relationship that the phase difference is proportional to the distance, a mathematical relationship between the phase difference and the distance is established, and the coordinates of the leaking dripping point are obtained according to the mathematical relationship. The mathematical relationship is:

[0033]

[0034]

[0035]

[0036] Among them, (x, y) represents the coordinates of the dripping point, (x B ,y B ) represents the position coordinates of the second frequency sensor, (x C ,y C ) represents the position coordinates of the third frequency sensor, (x D ,y D ) shows the position coordinates of the fourth frequency sensor, represents the phase of the first frequency sensor, represents the phase difference between the second frequency sensor and the first frequency sensor, represents the phase difference between the third frequency sensor and the first frequency sensor, Represents the phase difference between the fourth frequency sensor and the first frequency sensor.

[0037] In the actual implementation process, (x, y) and is an unknown number. For each frequency sensor, its own phase is unknown, but the phase difference relative to the first frequency sensor is known, that is, the phase of the second frequency sensor Phase of the third frequency sensor Phase of the fourth frequency sensor are all unknown, but the phase of the first frequency sensor As a reference point, the phase difference between the second frequency sensor and the first frequency sensor The phase difference between the third frequency sensor and the first frequency sensor The phase difference between the fourth frequency sensor and the first frequency sensor are all known, so in order to solve the above mathematical relationship to obtain the unknowns (x, y) and It is necessary to introduce the phase difference value into the mathematical equation. In the subsequent calculation process, after obtaining the values ​​of each known quantity in the above mathematical equation, the above mathematical equation can be directly solved by numerical substitution to obtain (x, y) and The specific solution process can be calculated by software.

[0038] Through the above steps, it is determined whether the cooling distribution unit is leaking based on the voltage output values ​​of the multiple frequency sensors arranged on the water collecting tray of the cooling distribution unit, wherein when the voltage output value changes, it is determined that the cooling distribution unit is leaking; and according to the phase difference of the induced electromotive force of the multiple frequency sensors, the distance from the leaking dripping point to each frequency sensor is calculated to locate the leaking dripping point. The present invention solves the problems of large error, low accuracy, and insufficient positioning detection capability in the related art of leakage detection and leakage point positioning of the liquid-cooled cooling distribution unit, and achieves the effect of improving the accuracy of leakage detection, i.e., positioning detection capability of the liquid-cooled cooling distribution unit.

[0039] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, 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 (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0040] In this embodiment, a liquid cooling capacity distribution unit is also provided, and the liquid cooling capacity distribution unit is used to implement the above-mentioned embodiments and preferred embodiments, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0041] There are multiple frequency sensors on the water collecting tray of the cooling distribution unit. Figure 3 is a structural block diagram of a control system of a liquid cooling cooling capacity distribution unit according to an embodiment of the present invention. Figure 3As shown, the control system 30 of the cold distribution unit includes: a water leakage judgment module 310, which is used to judge whether the cold distribution unit has a water leakage according to the voltage output values ​​of multiple frequency sensors, wherein when the voltage output value changes, it is judged that the cold distribution unit has a water leakage; a water leakage positioning module 320, which is used to calculate the distance from the water leakage dripping point to each frequency sensor according to the phase difference of the induced electromotive force of the multiple frequency sensors, and is used to locate the water leakage dripping point.

[0042] Figure 4 is a structural block diagram of a control system of a liquid cooling cooling capacity distribution unit according to an embodiment of the present invention. Figure 4 As shown, the control system 40 includes Figure 3 In addition to all the modules shown, the present invention also includes: a parameter setting module 410, which is used to set the initial vibration frequency of the water collecting tray according to the operation status of the circulation pump of the cooling capacity distribution unit.

[0043] Figure 5 is a structural block diagram of a water leakage judgment module of a liquid cooling cooling capacity distribution unit control system according to an embodiment of the present invention, such as Figure 5 As shown, the water leakage judgment module 310 includes: a parameter calculation unit 510, which is used to calculate the initial voltage value of each frequency sensor according to the initial vibration frequency of the water collection tray, and calculate the difference between the voltage output value of each frequency sensor and the initial voltage value; a logic judgment unit 520, which is used to judge that the cooling capacity distribution unit is leaking when the absolute value of the difference calculated by the parameter calculation unit is greater than 0.

[0044] Figure 6 is a structural block diagram of a water leakage positioning module of a liquid cooling cooling capacity distribution unit control system according to an embodiment of the present invention, such as Figure 6 As shown, the water leakage locating module 320 includes: a coordinate acquiring unit 610, which is used to perform mathematical modeling on the spatial position of each point of the water collecting tray to obtain the coordinates of each frequency sensor; a coordinate locating unit 620, which is used to obtain the coordinates of the water leakage dripping point according to the phase difference of the induced electromotive force of multiple frequency sensors and the distance from the water leakage dripping point to each frequency sensor.

[0045] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0046] For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and exemplary implementation modes, and this embodiment will not be described in detail herein.

[0047] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0048] In order to enable those skilled in the art to better understand the technical solution of the present invention, it is described below in conjunction with specific scenario embodiments.

[0049] Scenario Example 1

[0050] Figure 7 is a structural block diagram of a liquid cooling capacity distribution unit control system according to an embodiment of the present invention, such as Figure 7 As shown, the parameter setting module (M1), the parameter information reading module (M2), the parameter information calculation module (M3), the logic judgment module (M4), the parameter information processing module (M5), the alarm information output module (M6), and the software module (M7). Among them, the parameter setting module (M1) is used to set the control parameters according to the actual operation of the cooling capacity distribution unit; the parameter information reading module (M2) is used to obtain the number of running circulation pumps, the operating frequency of the circulation pumps, the sensor output and other parameters in real time; the parameter information calculation module (M3) is used to calculate and analyze the output of the sensor; the logic judgment module (M4) is used to calculate and judge the logical relationship between the parameter after the parameter information calculation and analysis and the set value; the parameter information processing module (M5) is used to process the sensor output and pass the result obtained by the logic judgment module (M4) to the information output; the alarm information output module (M6) is used to judge whether to give an alarm information according to the logic judgment result and the parameter information processing result; the software module (M7) is used to complete the calculation of the dripping point position.

[0051] In this scenario embodiment, the specific module naming and functional division of the control system are different from those in the above embodiment. In the actual implementation process, the specific naming and functional division are not specifically restricted as long as the purpose of final water leakage detection and leakage point location can be achieved.

[0052] In this scenario embodiment, the parameter setting module (M1) corresponds to the parameter setting module of the control system in the above embodiment; the parameter information reading module (M2), the parameter information calculation module (M3) and the logic judgment module (M4) correspond to the water leakage judgment module and the water leakage positioning module of the control system in the above embodiment.

[0053] Figure 8 Schematic diagram of the frequency sensor principle according to the scenario embodiment of the present invention. Figure 8 As shown, the frequency sensor is composed of an induction vibration block 12, a metal probe rod 13, an electromagnet 14, and a signal processing and transmission device 15. The working process is as follows: the induction vibration block 12 contacts the water collecting tray 6, and when the water collecting tray 6 vibrates, the metal probe rod 13 moves up and down, and cuts the magnetic field formed by the electromagnet 14 to generate an induced electromotive force, and the signal processing and transmission device 15 collects the induced electromotive force and processes it into a voltage value to transmit to the control system 7.

[0054] In the scenario embodiment of the present invention, the principle of using a frequency sensor to detect water leakage is that the vibration state (frequency, amplitude, etc.) of the water collecting tray is different when there is water and when there is no water. The metal probe rod will produce different induced electromotive forces when cutting the magnetic lines of force under different response conditions. The signal value output by the frequency sensor will therefore be different, so that it can be determined whether a water leakage occurs.

[0055] Fig. 9 is an example diagram of frequency sensor arrangement and water leakage detection according to a scenario embodiment of the present invention, such as Fig. 9 As shown, the principle of using frequency sensors to locate water leakage points is: after liquid drips onto the leakage tray, it will cause the vibration state of the water collecting tray to change. The process of each sensor changing from a vibration state with or without water to a vibration state with water will have a phase difference in their vibration waveforms due to the different distances from the liquid dripping point. The distance between the liquid dripping point and each sensor can be inferred based on the phase difference, thereby completing the positioning of the dripping point.

[0056] In the process of leak detection based on the frequency sensor, after receiving the alarm information from the alarm information output module, the software module will call the information processed by the parameter information processing module to complete the positioning of the dripping point. The software module establishes a plane rectangular coordinate system with the frequency sensor at point A as the origin, the direction of the frequency sensor at point AB as the x-axis, and the direction of the frequency sensor at point AD as the y-axis. The spatial position of each point in the water collection plate is mathematically modeled, and then the positioning of the dripping point is completed according to formulas (1) to (3). In the formula, the coordinates of the dripping point and the phase of the sensor at point A are It is an unknown parameter and can be obtained by solving. The meaning of the formula is that the ratio of the distance from the dropping point to each frequency sensor is proportional to the ratio of the phase difference of the waveform received by each sensor.

[0057]

[0058]

[0059]

[0060] In the scenario embodiment of the present invention, there is no restriction on which specific one of the four frequency sensors is used as the origin, and it can be randomly selected.

[0061] According to the detection principle and control system framework in the above scenario embodiment, this scenario embodiment provides a water leakage detection and alarm information output process. Fig.10 Schematic diagram of the principle of the water leakage detection and alarm information output process according to the scenario embodiment of the present invention. Fig.10 As shown, the water leakage detection process depends on the vibration state of the water collection pan, and is therefore closely related to the current operating state of the unit. The operating state of the circulating pump has a greater impact on the vibration state of the water collection pan, so the water leakage detection process needs to first obtain the operating state of the unit.

[0062] First, obtain the number of circulating pumps currently running in the unit: if no circulating pump is running, set the vibration frequency f of the water collection plate according to the running status 0 , the parameter reading module in the control system reads the initial t 0 The vibration state of the four frequency sensors within a certain time period is transmitted to the parameter calculation module to calculate the effective value of the voltage U of the induced electromotive force generated by the vibration. A0 , U B0 , U C0 , U D0 , and pass the parameters to the logic judgment module for temporary storage; when the two circulating pumps are running, the vibration frequency f of the water collection plate is set according to the operating status 2 The relationship between the operating frequency of the circulating pump and the 2 =F 2 (f), consistent with the operation without a circulating pump, the effective value U of the induced electromotive force voltage in the current state is obtained by using the parameter calculation module and the parameter calculation module A0 , U B0 , U C0 , U D0 , and pass the parameters to the logic judgment module for temporary storage; if only one circulating pump is running, it is necessary to confirm that 1# circulating pump or 2# circulating pump is running, and set a specific water collection plate vibration frequency f accordingly. 11 、f 12 The relationship between the operating frequency of the circulating pump and f 11 =F 11 (f), f 12 =F 12(f) The subsequent processing is consistent with the above, and the calculated parameters are transferred to the logic judgment module.

[0063] During operation, it is necessary to detect the waveform of the induced electromotive force voltage generated by the vibration of each frequency sensor in real time, and set the sampling time t 0 It is passed to the parameter calculation module, and after calculation, the effective value of the voltage U in the current sampling time is obtained A , U B , U C , U D , and then passed to the logic judgment module to determine whether the current parameters meet |U A -U A0 |>0&|U B -U B0 |>0&|U C -U C0 |>0&|U D -U D0 |>0, when the judgment condition is met, the alarm information output module gives an alarm message, and when the judgment condition is not met, no alarm message is given.

[0064] When the unit gives an alarm message, the parameter information reading module will 0 The waveform information of the induced electromotive force of each frequency sensor within the time is transmitted to the parameter information processing module, which processes the information and cooperates with the software module to complete the positioning of the dripping point. The specific processing process of dripping point positioning is: when the logic judgment module determines that the result is "yes", the parameter information reading module will read the alarm before t 0 After a certain time, the induced electromotive force waveforms of each frequency sensor are transmitted to the parameter information processing module. The phase when the frequency sensor at point A changes is recorded as the base point. The phase differences of the frequency sensor waveforms at the other three points relative to point A are respectively The parameter information processing module passes the above parameters to the software module, and the software module calculates the relative distances from the dripping point to the other three points and from the dripping point to point A according to the size of the phase difference, determines the distance coordinates of the dripping point relative to point A, and completes the positioning of the dripping point.

[0065] The embodiment of the present invention provides a method for detecting water leakage in a liquid-cooled cold distribution unit, which can realize rapid detection and precise positioning of water leakage points. According to the operating conditions of the cold distribution unit, a frequency sensor is introduced by using the principle of electromagnetic induction, and the water leakage condition of the unit is detected according to the difference in the vibration state of the water collecting plate when there is water and when there is no water, so as to ensure the accuracy of water leakage detection and greatly reduce the risk of false alarms in the water leakage detection process. Compared with the use of water immersion sensors, on the one hand, it solves the problem of blind spots in water immersion sensor detection, and on the other hand, it avoids the entanglement of water immersion ropes of water immersion sensors. According to the phase difference of the change of the induced electromotive force waveform of each frequency sensor in the water state, the relative distance of the dripping point relative to the arrangement point of the frequency sensor is obtained, and the precise positioning of the dripping point is completed, which is convenient for quickly locating risk points and reducing the harm that may be caused by water leakage.

[0066] The method for detecting water leakage of a liquid-cooled cooling capacity distribution unit provided by the present invention adopts a frequency sensor to detect the water leakage condition of the unit, thereby ensuring the accuracy of the detection, reducing the risk of false alarms of linear water immersion sensors, and solving the problem of detection blind spots of water immersion sensors; the phase difference of the waveform after the alarm is given by the frequency sensor can locate the relative position of the water leakage point in the water collection tray, which is convenient for quickly locating the leakage point and reducing the risks and hazards caused by the leakage.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for detecting water leakage in a liquid cooling cooling capacity distribution unit, It is characterized in that include: According to the voltage output values ​​of a plurality of frequency sensors arranged on the water collecting pan of the cold distribution unit, it is judged whether the cold distribution unit is leaking, wherein if the voltage output value changes, it is judged that the cold distribution unit is leaking; According to the phase difference of the induced electromotive force of the multiple frequency sensors, the distance from the water leakage dripping point to each of the frequency sensors is calculated to locate the water leakage dripping point.

2. The method according to claim 1, It is characterized in that Before judging whether the cooling distribution unit is leaking according to the voltage output values ​​of a plurality of frequency sensors arranged on the water collecting pan of the cooling distribution unit, the method further comprises: The initial vibration frequency of the water collecting tray is set according to the operation condition of the circulating pump of the cold capacity distribution unit.

3. The method according to claim 2, It is characterized in that When the voltage output value changes, determining that the cooling capacity distribution unit is leaking includes: Calculate the initial voltage value of each frequency sensor according to the initial vibration frequency of the water collecting tray; The difference between the voltage output value of each frequency sensor and the initial voltage value is calculated, and when the absolute value of the difference is greater than 0, it is determined that the cooling capacity distribution unit is leaking.

4. The method according to claim 1, It is characterized in that According to the phase difference of the induced electromotive force of the multiple frequency sensors, the distance from the water leakage dripping point to each of the frequency sensors is calculated to locate the water leakage dripping point, including: Performing mathematical modeling on the spatial position of each point of the water collecting tray to obtain the coordinates of each frequency sensor; The coordinates of the water leakage drop point are obtained according to the phase difference of the induced electromotive force of the multiple frequency sensors and the distance from the water leakage drop point to each of the frequency sensors.

5. The method according to claim 4, It is characterized in that Mathematical modeling is performed on the spatial position of each point of the water collecting tray, including: A plane rectangular coordinate system is established with the position of the first frequency sensor as the origin, the direction of the line connecting the first frequency sensor and the second frequency sensor as the X-axis, and the direction of the line connecting the first frequency sensor and the third frequency sensor as the Y-axis.

6. The method according to claim 5, It is characterized in that The coordinates of the water leakage drop point are obtained according to the phase difference of the induced electromotive force of the multiple frequency sensors and the distance from the water leakage drop point to each of the frequency sensors, including: According to the relationship that the phase difference is proportional to the distance, a mathematical relationship between the phase difference and the distance is established: Wherein, (x, y) represents the coordinates of the dripping point, (x B ,y B ) represents the position coordinates of the second frequency sensor, (x C ,y C ) represents the position coordinates of the third frequency sensor, (x D ,y D ) shows the position coordinates of the fourth frequency sensor, represents the phase of the first frequency sensor, represents the phase difference between the second frequency sensor and the first frequency sensor, represents the phase difference between the third frequency sensor and the first frequency sensor, represents a phase difference between the fourth frequency sensor and the first frequency sensor; According to the mathematical relationship, the coordinates of the water leakage drop point are obtained.

7. A liquid cooling cooling capacity distribution unit, It is characterized in that A plurality of frequency sensors are arranged on the water collecting tray of the cold distribution unit, and the control system of the cold distribution unit includes: a water leakage judgment module, used for judging whether the cooling capacity distribution unit has water leakage according to the voltage output values ​​of the multiple frequency sensors, wherein when the voltage output value changes, it is judged that the cooling capacity distribution unit has water leakage; The water leakage locating module is used to calculate the distance from the water leakage dripping point to each of the frequency sensors according to the phase difference of the induced electromotive force of the multiple frequency sensors, so as to locate the water leakage dripping point.

8. The liquid cooling cooling capacity distribution unit according to claim 7, It is characterized in that The control system further comprises: The parameter setting module is used to set the initial vibration frequency of the water collecting tray according to the operation status of the circulating pump of the cooling capacity distribution unit.

9. The liquid cooling cooling capacity distribution unit according to claim 7, It is characterized in that The water leakage judgment module comprises: A parameter calculation unit, used for calculating an initial voltage value of each frequency sensor according to an initial vibration frequency of the water collecting tray, and calculating a difference between the voltage output value of each frequency sensor and the initial voltage value; The logic determination unit is used to determine that the cooling capacity distribution unit has a water leak when the absolute value of the difference calculated by the parameter calculation unit is greater than 0.

10. The liquid cooling cooling capacity distribution unit according to claim 7, It is characterized in that The water leakage positioning module comprises: A coordinate acquisition unit, used to perform mathematical modeling on the spatial position of each point of the water collecting tray to obtain the coordinates of each frequency sensor; The coordinate positioning unit is used to obtain the coordinates of the water leakage drop point according to the phase difference of the induced electromotive force of the multiple frequency sensors and the distance from the water leakage drop point to each of the frequency sensors.

Images