Cold plate-immersion liquid cooling cooperative heat dissipation method based on steam zone coupling modeling

Abstract

The invention discloses a cold plate-immersion liquid cooling cooperative heat dissipation method based on steam zone coupling modeling, and relates to the technical field of cooperative heat dissipation. Comprising the following steps of S1, collecting collaborative heat dissipation monitoring data of each key position in real time, and performing data preprocessing; s2, the comprehensive risk of the steam area is judged, and a risk cooling adjustment instruction is issued according to the comprehensive risk judgment result; s3, receiving a risk cooling adjustment instruction, carrying out collaborative heat dissipation, evaluating the collaborative heat dissipation capability, adjusting the rotating speed of a circulating pump and the opening degree of a valve, and requesting condensation backflow adjustment; s4, judging the adjusting quantity of condensation reflux, executing reflux adjustment and performing safety monitoring; and S5, continuously monitoring the data of each link, and carrying out anomaly detection on the state of each link to realize anomaly regulation and control. The problems that in an existing single-phase cold plate or two-phase immersion liquid cooling mode, steam accumulation is prone to occurring in a high-heat-flow scene, so that the pressure intensity is increased, the boiling point is increased, and the heat exchange efficiency is reduced, and then the operation reliability of equipment is affected are solved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of cooperative heat dissipation technology, and particularly relates to a cold plate-immersed liquid cooling cooperative heat dissipation method based on steam area coupling modeling. BACKGROUND

[0002] With the continuous development of the digital field, as the core infrastructure supporting the digital economy, the server power density continues to break through the limit with the soaring chip performance, and the heat dissipation challenge is increasingly severe, which has become a key bottleneck restricting the efficient and stable operation of the data center. To cope with the challenge, liquid cooling technology is widely used due to its much higher heat dissipation efficiency than air cooling. Cold plate liquid cooling and immersed liquid cooling are the mainstream directions. In the existing liquid cooling solutions in the industry, single-phase cold plates rely on sensible heat exchange of the working fluid for heat dissipation, and are stable in low-power scenarios; single-phase immersed liquid cooling relies on direct contact of the liquid to cover the entire machine for heat dissipation; two-phase immersed liquid cooling utilizes the latent heat of phase change of the working fluid and has certain advantages in high heat flux density scenarios.

[0003] For example, the patent with the publication number CN104679191A discloses a liquid cooling heat dissipation device and a liquid cooling heat dissipation temperature control method. The cooling liquid is pumped to cool the heat source. The liquid cooling heat dissipation temperature control method includes contacting the heat source with a liquid cooling head to absorb the heat generated by the heat source and to provide heat exchange for the cooling liquid; connecting a heat dissipation row to the liquid cooling head to form a circulating pipeline for the circulation of the cooling liquid; detecting the temperature of the heat source, the inlet liquid temperature of the heat dissipation row and the outlet liquid temperature of the heat dissipation row; determining whether the temperature of the heat source is greater than a high temperature warning value, and calculating the temperature difference between the outlet liquid temperature and the inlet liquid temperature. When the temperature of the heat source is not greater than the high temperature warning value, the method adjusts the forced cooling efficiency of the heat dissipation row or the flow of the pumped cooling liquid according to the temperature difference; so as to meet the temperature control requirement and the noise control.

[0004] For example, the patent with the publication number CN119882962A discloses a heat dissipation system and a liquid cooling heat dissipation control method, relating to the heat dissipation technology of heat generating components. The heat dissipation system includes a cabinet main body, a temperature detection piece, an auxiliary heat dissipation pipe piece, a switching device and a control device; the temperature detection piece is used for detecting the temperature information of the corresponding heat generating component; at least one side of the outer peripheral side surface of the heat generating component is provided with the auxiliary heat dissipation pipe piece, and the auxiliary heat dissipation pipe piece is provided with a first jetting component facing the corresponding heat generating component, which is used for jetting the cooling liquid to the heat generating component at the corresponding position; the switching device includes at least one connecting pipe piece, one end of the connecting pipe piece is connected with a cooling liquid conveying device, and the other end of the connecting pipe piece is used for conveying the cooling liquid into the auxiliary heat dissipation pipe piece. The heat dissipation system provided by the application can perform targeted auxiliary heat dissipation on individual heat generating components that need auxiliary heat dissipation, avoid uniformly increasing the heat dissipation requirement of all heat generating components, reduce the requirement for the heat dissipation system, and effectively reduce the energy consumption.

[0005] But in the process of implementing the technical scheme of the embodiment of the application, the application finds that the above-mentioned technology at least has the following technical problems: In a high-power-density data center, as the heat flow density of the server continues to rise, the existing single-phase cold plate or two-phase immersion liquid cooling solution is prone to problems such as steam heat not being able to be timely exported, steam accumulating in the sealed box to cause the pressure to rise, the boiling point of the cooling liquid to rise, and the heat exchange efficiency to decrease in a high heat flow density scene, thereby affecting the reliability of the operation of the equipment.

[0006] Therefore, in view of the above problems, there is an urgent need for a cold plate-immersion liquid cooling collaborative heat dissipation method based on steam zone coupling modeling. SUMMARY

[0007] Technical problems solved In view of the deficiencies of the prior art, the application provides a cold plate-immersion liquid cooling collaborative heat dissipation method based on steam zone coupling modeling, which solves the problem that the existing single-phase cold plate or two-phase immersion liquid cooling is prone to phenomena such as steam accumulation causing the pressure to rise, the boiling point to rise, and the heat exchange efficiency to decrease in a high heat flow scene, thereby affecting the reliability of the operation of the equipment.

[0008] Technical scheme

[0009] To achieve the above object, the application is implemented by the following technical scheme: a cold plate-immersion liquid cooling collaborative heat dissipation method based on steam zone coupling modeling, comprising the following steps: S1, real-time acquisition of collaborative heat dissipation monitoring data of each key position, data preprocessing of the collaborative heat dissipation monitoring data; S2, according to the collaborative heat dissipation monitoring data, discriminating the comprehensive risk of the steam zone, and according to the discrimination result of the comprehensive risk of the steam zone, issuing a risk cooling regulation instruction; S3, receiving the risk cooling regulation instruction, performing collaborative heat dissipation, and based on the collaborative heat dissipation monitoring data, evaluating the collaborative heat dissipation capacity, adjusting the circulating pump rotating speed and the valve opening degree according to the collaborative heat dissipation capacity, and requesting condensation backflow regulation; S4, combining the collaborative heat dissipation monitoring data and the collaborative heat dissipation capacity, judging the regulation amount of the condensation backflow, executing backflow regulation according to the regulation amount of the condensation backflow and performing safety monitoring; S5, continuously monitoring the collaborative heat dissipation monitoring data, the discrimination result of the comprehensive risk of the steam zone, the collaborative heat dissipation capacity and the regulation amount of the condensation backflow, detecting the abnormal state of each link, and realizing abnormal regulation and control.

[0010] Further, the specific process of collecting the cooperative heat dissipation monitoring data of each key position in real time is as follows: the server is fixed in the sealed box, and during the server operation and the cooperative heat dissipation process, the temperature and pressure of the server area, the temperature and pressure of the top and middle of the vapor area, the temperature, pressure and mass flow of the cold plate inlet and outlet, the temperature and pressure of the cooling liquid tank and the pressure of the top and middle of the condenser are collected in real time by using the pressure and temperature sensors and the mass flow meter; the current liquid height of the cooling liquid is obtained by using the liquid level sensor; the cross-sectional area and the total volume of the sealed box are recorded; and the temperature, pressure, mass flow and liquid height are recorded as the cooperative heat dissipation monitoring data.

[0011] Further, the specific process of data preprocessing of the cooperative heat dissipation monitoring data is as follows: the missing value identification and repair of the cooperative heat dissipation monitoring data is performed, and the sliding window filling method is used to make up for the collection abnormality and short packet loss; the outlier data points are identified and removed by using the median absolute deviation algorithm; the time sequence alignment and resampling of the cooperative heat dissipation monitoring data of different types and different sampling frequencies are performed; the wavelet transform method is used for denoising and smoothing processing of the cooperative heat dissipation monitoring data; and the standardization and normalization processing of the cooperative heat dissipation monitoring data are performed, and a unified timestamp and monitoring point space label are assigned, and the data are stored in the cooperative heat dissipation monitoring database.

[0012] Further, the specific process of discriminating the comprehensive risk of the vapor area according to the cooperative heat dissipation monitoring data is as follows: the pressure of the top of the vapor area, the pressure of the middle of the vapor area, the temperature of the top of the vapor area and the temperature of the server area are obtained for the vapor area formed in the sealed box by the two-phase immersion liquid cooling method; the current liquid height, the cross-sectional area and the total volume of the sealed box are obtained, and for the whole vapor area, the liquid volume is calculated by the product of the current liquid height and the cross-sectional area of the sealed box, the vapor volume is calculated by subtracting the liquid volume from the total volume of the sealed box, the vapor-liquid volume ratio of the vapor area is obtained by calculating the ratio of the vapor volume to the liquid volume, the pressure difference sensitive term is obtained by subtracting the pressure of the middle of the vapor area from the pressure of the top of the vapor area, the temperature difference driving term is obtained by subtracting the temperature of the server area from the temperature of the top of the vapor area, the risk driving term is obtained by multiplying the pressure difference sensitive term and the temperature difference driving term, the gas-liquid ratio amplification term is obtained by multiplying the difference between the vapor-liquid volume ratio and the constant one by the gas-liquid ratio sensitivity weight factor and taking the negative value as the exponential power, the natural exponential operation is performed to obtain the gas-liquid ratio amplification term, the gas-liquid ratio response adjustment term is obtained by adding the gas-liquid ratio amplification term and the constant one, and the vapor area risk discrimination value is obtained by dividing the risk driving term by the gas-liquid ratio response adjustment term.

[0013] Further, according to the comprehensive risk identification result of the steam area, the specific process of issuing the risk cooling regulation instruction is: comparing the steam area risk identification value with the risk threshold value, when the steam area risk identification value is greater than the risk threshold value, it is determined that it is an early risk, the regulation instruction of enhancing the cold plate heat dissipation and accelerating the condensation backflow is issued, and the control parameters of the circulating pump rotating speed and the cold plate flow distribution are given to the next process; when the steam area risk identification value is less than or equal to the risk threshold value, it is determined that the current state is normal, no additional cold plate heat dissipation enhancement and fast condensation backflow regulation instruction is triggered, and the existing circulating pump rotating speed and cold plate flow distribution are maintained; the steam area risk identification value, the regulation instruction and the control parameters are stored in the collaborative heat dissipation monitoring database.

[0014] Further, the specific process of receiving the risk cooling regulation instruction, performing the collaborative heat dissipation, and evaluating the collaborative heat dissipation capacity based on the collaborative heat dissipation monitoring data is: receiving the regulation instruction of enhancing the cold plate heat dissipation and accelerating the condensation backflow and the control parameters of the circulating pump rotating speed and the cold plate flow distribution, performing the immersion liquid cooling and the cold plate path switching and parameter preparation; in the collaborative heat dissipation operation process, the temperature of the cold plate inlet, the pressure of the cold plate inlet and the mass flow rate of the cold plate inlet are obtained, and the temperature of the cold plate outlet and the pressure of the cold plate outlet are also obtained; the temperature difference between the cold plate inlet and the cold plate outlet is obtained by subtracting the temperature of the cold plate inlet from the temperature of the cold plate outlet, and the basic quantity of heat exchange capacity is obtained by multiplying the mass flow rate of the cold plate inlet by the temperature difference; the pressure difference between the cold plate inlet and the cold plate outlet is obtained by subtracting the pressure of the cold plate outlet from the pressure of the cold plate inlet, and the absolute value is taken; the heat pressure change quantity is obtained by dividing the sum of the pressure difference between the cold plate inlet and the cold plate outlet and the minimum constant value by the sum of the absolute value of the temperature difference between the cold plate inlet and the cold plate outlet and the minimum constant value; the heat pressure change quantity is subjected to a hyperbolic tangent function operation to obtain a heat pressure change quantity correction value; and the collaborative heat dissipation efficiency evaluation value is obtained by adding the basic quantity of heat exchange capacity and the heat pressure change quantity correction value.

[0015] Further, the specific process of adjusting the circulating pump rotating speed and the valve opening degree according to the collaborative heat dissipation capacity and requesting the condensation backflow regulation is: calculating the median value, the average value and the fluctuation range of the collaborative heat dissipation efficiency evaluation value in the sliding time window to construct the normal working condition baseline of the cold plate under the current environment; storing the collaborative heat dissipation efficiency evaluation value and the normal working condition baseline in the collaborative heat dissipation monitoring database; when the collaborative heat dissipation efficiency evaluation value is less than or equal to the normal working condition baseline, and the pressure difference between the inlet and the outlet is less than the pressure difference threshold value, it is determined that the flow rate is insufficient; when the collaborative heat dissipation efficiency evaluation value is less than or equal to the normal working condition baseline, and the temperature difference between the inlet and the outlet is less than the temperature difference threshold value, it is determined that the cooling supply is insufficient; when the collaborative heat dissipation efficiency evaluation value is greater than the normal working condition baseline, and the pressure difference between the inlet and the outlet is greater than the pressure difference threshold value, it is determined that the circulating pump rotating speed is too high; for insufficient flow rate, the fluctuation amplitude of the circulating pump rotating speed is reduced, the valve opening degree is adjusted, and the condensation circuit is requested to increase the backflow flow rate; for insufficient cooling supply, the branch flow rate and the circulating pump rotating speed are increased, and the temperature difference is increased to improve the heat exchange capacity; for the circulating pump rotating speed being too high, the circulating pump rotating speed reduction and the exhaust measure are implemented.

[0016] Further, the specific process of judging the adjustment amount of condensation backflow in combination with the cooperative heat dissipation monitoring data and the cooperative heat dissipation capacity is as follows: the condenser receives the gaseous working medium output by the two-phase cold plate and exchanges heat with the cold source to become liquid; the current liquid level of the cooling liquid is obtained, the deviation of the cooperative heat dissipation efficiency evaluation value from the normal working condition baseline is calculated within the sliding time window, and the liquid level interval of the cooling liquid when the deviation is less than the deviation threshold value is screened out, and the median is taken as the target liquid level height; the pressure at the top of the condenser and the pressure in the middle of the condenser are obtained; the liquid level gap is obtained by subtracting the current liquid level of the cooling liquid from the target liquid level height, the positive value of the liquid level gap is taken, that is, the calculation result is positive, the liquid level gap retains the actual calculation result, otherwise 0 is taken; the liquid level relative gap ratio is obtained by dividing the liquid level gap by the target liquid level height; the natural logarithm of the sum of the liquid level relative gap ratio and the constant one is calculated to obtain the liquid level driving strength value; the condensing pressure difference is obtained by subtracting the pressure in the middle of the condenser from the pressure at the top of the condenser, the positive value of the condensing pressure difference is taken, that is, the calculation result is positive, the condensing pressure difference retains the actual calculation result, otherwise 0 is taken; the pressure difference normalized ratio is obtained by dividing the condensing pressure difference by the sum of the pressure at the top of the condenser, the pressure in the middle of the condenser and the constant one; the pressure difference driving factor is obtained by performing the hyperbolic tangent function operation on the pressure difference normalized ratio; the backflow adjustment amount is obtained by multiplying the liquid level driving strength value and the pressure difference driving factor.

[0017] Further, the specific process of executing backflow adjustment and safety monitoring according to the adjustment amount of condensation backflow is as follows: the backflow adjustment amount is calculated in real time, the target speed of the circulating pump and the target opening of the valve during condensation backflow are set according to the backflow adjustment amount, and the limit of the adjustment rate and the hysteresis interval are set; after executing the backflow adjustment, the feedback observation stage is entered, and whether the liquid level of the cooling liquid converges to the target liquid level height and whether the condensing pressure difference decreases are monitored; if there is still no improvement in the continuous two rounds of feedback observation stage, the circulating pump speed and the valve opening are gradually increased until the upper limit, and a request for condensation strengthening is sent to the upstream equipment; at the same time, if the liquid level of the cooling liquid exceeds the liquid level safety threshold value and the condensing pressure difference exceeds the pressure difference safety threshold value, the circulating pump speed and the valve opening are immediately limited, and an alarm is triggered; when the circulating pump speed, the valve and the condensation circuit flow adjustment are executed, the outlet water temperature of the cooling tower and the fan speed are controlled; the liquid level of the cooling liquid, the condensing pressure difference, the backflow adjustment amount and the adjustment process are stored in the cooperative heat dissipation monitoring database with a time stamp, and the liquid level safety threshold value and the pressure difference safety threshold value are updated and optimized.

[0018] Further, the continuous monitoring of the cooperative heat dissipation monitoring data, the steam area comprehensive risk discrimination result, the cooperative heat dissipation capacity and the regulation amount of the condensation backflow is carried out to detect the abnormal state of each link, and the specific process of abnormal regulation is realized. The cooperative heat dissipation monitoring data, the steam area risk discrimination value, the cooperative heat dissipation efficiency evaluation value, the backflow regulation amount and the cooling tower operation parameter are continuously monitored to realize the abnormal detection of the operation state of each link, identify whether there is an out-of-limit, failure and trend risk, if there is an abnormal state, reduce the equipment operation frequency, stop the circulating pump and pressure relief, and issue an alarm prompt; the whole abnormal process is subjected to whole-process data acquisition and event recording, including the trigger reason, the execution action, the execution effect information, and the generation of the event log with a time stamp, so that the closed loop of risk rapid response and safety redundancy protection is realized.

[0019] Advantages The present application has the following advantages: (1) The present application can quickly identify the steam accumulation trend in the early risk stage by real-time monitoring of multi-point temperature, pressure and liquid level, combining with the steam area risk discrimination algorithm constructed by the gas-liquid volume ratio, temperature difference driving term and pressure difference sensitive term, and issuing the enhancement instruction of cooling and condensation backflow to realize advanced regulation.

[0020] (2) The present application dynamically adjusts the circulating pump speed, valve opening and branch flow by using the cooperative heat dissipation efficiency evaluation value, realizes the flexible switching and complementary operation of the cold plate and the immersed liquid cooling under different working conditions, and improves the overall heat exchange efficiency and adaptability.

[0021] (3) The present application realizes the backflow regulation strategy driven by the liquid level gap ratio and the condensation pressure difference, combines the target liquid level self-adaptive correction and the linkage control of the cooling tower outlet water temperature and the fan speed, and guarantees the condensation efficiency and equipment safety.

[0022] (4) The present application continuously monitors the cooperative heat dissipation monitoring data, the risk discrimination value, the heat dissipation efficiency, the backflow regulation amount and the cooling tower operation parameter, supports the out-of-limit and trend risk detection, executes the frequency reduction, stops the circulating pump and pressure relief protection measures, and forms a complete event log, realizes the traceability and optimization closed loop.

[0023] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a cold plate-immersed liquid cooling cooperative heat dissipation method flow chart based on steam area coupling modeling; Figure 2 It is a cold plate-immersed liquid cooling cooperative heat dissipation system principle diagram; Figure 3 It is a two-phase cold plate structure diagram in a sealed box; Figure 4 For the trend of synergistic heat dissipation performance and the normal working condition baseline visualization graph.

[0025] In the figure, 1, two-phase cold plate; 2, pressure and temperature sensor; 3, cold plate outlet; 4, cold plate inlet; 5, programmable logic controller; 6, circulating pump; 7, cooling tower; 8, server. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. As understood by those skilled in the art, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-4 The embodiments of the present application provide a technical solution: a cold plate-immersed liquid cooling synergistic heat dissipation method based on steam zone coupling modeling, comprising the following steps: S1, real-time acquisition of synergistic heat dissipation monitoring data at each key position, data preprocessing of the synergistic heat dissipation monitoring data; S2, according to the synergistic heat dissipation monitoring data, the comprehensive risk of the steam zone is discriminated, and according to the steam zone comprehensive risk discrimination result, the risk cooling regulation instruction is issued; S3, receiving the risk cooling regulation instruction, performing synergistic heat dissipation, and based on the synergistic heat dissipation monitoring data, evaluating the synergistic heat dissipation capacity, adjusting the circulating pump 6 rotating speed and valve opening degree according to the synergistic heat dissipation capacity, and requesting condensation backflow regulation; S4, combining the synergistic heat dissipation monitoring data and the synergistic heat dissipation capacity, judging the regulation amount of the condensation backflow, executing the backflow regulation according to the regulation amount of the condensation backflow and performing safety monitoring; S5, continuously monitoring the synergistic heat dissipation monitoring data, the steam zone comprehensive risk discrimination result, the synergistic heat dissipation capacity and the regulation amount of the condensation backflow, detecting the abnormal state of each link, and realizing abnormal regulation and control.

[0028] Specifically, the specific process of collecting the cooperative heat dissipation monitoring data of each key position in real time is as follows: the server 8 is fixed as a whole in the sealed box body, it is ensured that the equipment is installed stably and does not interfere with the box body, and the sealing performance of the sealed box body is checked to prevent the leakage of the cooling liquid, sufficient and suitable cooling liquid is injected into the sealed box body and the cooling liquid tank, and it is ensured that the server 8 is completely immersed in the liquid cooling liquid; during the operation and cooperative heat dissipation of the server 8, the temperature and pressure of the server 8 area, the temperature and pressure of the top and middle of the vapor area, the temperature, pressure and mass flow of the cold plate inlet 4 and the cold plate outlet 3, the temperature and pressure of the cooling liquid tank and the pressure of the top and middle of the condenser are collected in real time by using the pressure and temperature sensor 2 and the mass flow meter; and the current liquid height of the cooling liquid is obtained by the liquid level sensor; at the same time, the cross-sectional area and the total volume of the sealed box body are recorded; the temperature, pressure, mass flow and liquid height are recorded as the cooperative heat dissipation monitoring data.

[0029] As shown in Figure 2 The principle diagram of the cold plate-immersed liquid cooling cooperative heat dissipation system provided by the embodiment of the application shows that the core of the cooperative heat dissipation equipment is: the two-phase cold plate 1, the temperature and pressure sensor 2, the cold plate outlet 3, the cold plate inlet 4, the programmable logic controller 5, the circulating pump 6, the cooling tower 7 and the server 8. During the operation, the two-phase cold plate 1 directly absorbs the high heat flux heat generated by the server 8, so that the cooling liquid is locally boiled and forms a gas-liquid two-phase flow; the sensor network collects the temperature, pressure, liquid level and flow data of each key position in real time. Based on the vapor area risk discrimination and cooperative heat dissipation efficiency evaluation algorithm, the programmable logic controller 5 dynamically judges the risk state of the vapor area and the equipment operation efficiency, and intelligently adjusts the circulating pump 6 speed, the valve opening degree and the condensing backflow according to the results. When the condensing backflow needs to be strengthened, the cooling tower 7 is linked, the outlet water temperature and the fan speed are adjusted, a low-temperature cold source is provided for the condenser, the gaseous working medium is efficiently condensed back to liquid, and a cooperative heat dissipation closed loop among the cold plate, the immersed liquid cooling and the cooling tower 7 is formed. Under the working condition of high heat flux and complex load fluctuation, the heat exchange efficiency is stable, the cavitation and dryout are prevented, and the reliability and safety of the server 8 operation are improved.

[0030] As shown in Figure 3As shown, the two-phase cold plate structure in the sealed box provided by the embodiment of the application is shown, the flat plate structure arranged horizontally at the top is a two-phase cold plate 1 component, cooling liquid is transported through the internal flow channel, directly contacts and absorbs heat from the key heat generating components of the server 8 such as the CPU and the GPU, and makes the local cooling liquid boil to form gas-liquid two-phase flow. The inlet and outlet of the cold plate are located on the side wall of the box, used to be connected with the external cooling circuit including the condenser and the cooling tower 7. The sheet structure arranged vertically at the bottom is a heat dissipation element of the immersed liquid cooling area, which can be the mainboard, hard disk array and other heat generating components of the server 8 immersed in the cooling liquid; the liquid exchanges heat through natural convection and auxiliary flow, and transfers heat to the vapor area. The transparent shell around the box represents the sealed liquid cooling cabin, which can isolate external air, form a stable gas-liquid two-phase environment, and form a vapor area in the upper space and a liquid cooling area in the lower space. The structure combines the advantages of high-efficiency fixed-point heat dissipation of the cold plate and overall uniform temperature of the immersed liquid cooling, and provides a physical basis for risk discrimination of the vapor area, evaluation of the synergistic heat dissipation efficiency and adjustment of the condensation backflow.

[0031] In the embodiment, by collecting the temperature, pressure, mass flow and liquid level of the key positions of the server 8 area, the vapor area, the inlet and outlet of the cold plate, the cooling liquid tank and the condenser in the running process of the server 8, and combining the geometric parameters of the sealed box, comprehensive synergistic heat dissipation monitoring data can be formed, which can accurately reflect the thermodynamic state and flow characteristics of each link, and provide high-precision and dynamic data support for heat dissipation performance evaluation, running state judgment and optimization control.

[0032] Specifically, the specific process of data preprocessing of the synergistic heat dissipation monitoring data is as follows: missing value identification and repair of the synergistic heat dissipation monitoring data, and the sliding window filling method is used to make up for the collection abnormalities and short packet loss; wherein the window length of the sliding window can be adaptively set according to the sampling frequency to ensure the fitting accuracy of the filled value and the actual trend; the outlier data points are identified and removed by using the median absolute deviation algorithm; the median absolute deviation algorithm calculates the median of the data set, calculates the absolute deviation of each point from the median, and takes the median, and then combines the set threshold to judge whether it is an outlier, so as to realize the robust detection of abnormal data; the synergistic heat dissipation monitoring data of different types and different sampling frequencies are time-aligned and resampled; in the time alignment process, the data of different channels will be synchronized according to the unified reference clock, and the resampling ensures that the subsequent analysis can process the data based on the same time interval; the synergistic heat dissipation monitoring data is denoised and smoothed by using the wavelet transform method; at the same time, the synergistic heat dissipation monitoring data is standardized and normalized, and a unified time stamp and monitoring point space label are assigned, so as to realize the comparability and traceability of cross-module data, and store in the synergistic heat dissipation monitoring database, support historical backtracking, conditional query and data export, and provide high-quality input data for subsequent risk discrimination, heat dissipation capacity evaluation and intelligent regulation.

[0033] In the embodiment, the collaborative heat dissipation monitoring data is comprehensively preprocessed through the steps of missing value repair, outlier rejection, time series alignment, denoising smoothing and standardization processing, to ensure the integrity, accuracy and consistency of the data, effectively eliminate the noise and deviation in the collection process, and provide high-quality and highly comparable basic data support for subsequent heat dissipation performance analysis, calculation and optimization control.

[0034] Specifically, according to the collaborative heat dissipation monitoring data, the specific process of discriminating the comprehensive risk of the steam area is as follows: for the steam area formed by the two-phase immersion liquid cooling method in the sealed box, the pressure at the top of the steam area, the pressure in the middle of the steam area, the temperature at the top of the steam area and the temperature of the server 8 area are obtained; the current liquid height, the cross-sectional area and the total volume of the sealed box are obtained, for the whole steam area, the liquid volume is calculated by the product of the current liquid height and the cross-sectional area of the sealed box, the steam volume is calculated by subtracting the liquid volume from the total volume of the sealed box, the ratio of the steam volume to the liquid volume is obtained, which is the gas-liquid volume ratio of the steam area, which is an important indicator for measuring the saturation degree of the steam area; the pressure difference sensitive term is obtained by subtracting the pressure in the middle of the steam area from the pressure at the top of the steam area, which reflects the change of the pressure gradient in the vertical direction of the steam area; the temperature difference driving term is obtained by subtracting the temperature of the server 8 area from the temperature at the top of the steam area, which is used to measure the heat flow driving force caused by the temperature difference between the steam area and the server 8 area; the risk driving term is obtained by multiplying the pressure difference sensitive term and the temperature difference driving term, which comprehensively reflects the main driving force of the risk change of the steam area; the difference between the gas-liquid volume ratio and the constant one is multiplied by the gas-liquid ratio sensitivity weight factor, which is used to adjust the sensitivity of the gas-liquid volume ratio to the risk amplification, and the negative value is taken as the exponential power, and the natural exponential operation is performed to obtain the gas-liquid ratio amplification term, the natural exponential operation is used to nonlinearly amplify the influence of the gas-liquid volume ratio on the risk, and the gas-liquid ratio amplification term is added by the constant one to obtain the gas-liquid ratio response adjustment term, and the constant one is added to avoid the denominator being zero and balance the influence of the gas-liquid ratio; the risk driving term is divided by the gas-liquid ratio response adjustment term to obtain the steam area risk discrimination value, which quantifies the risk degree of the current steam area, and the larger the value is, the higher the risk is.

[0035] Wherein, the specific formula of the steam area risk discrimination value is: ; In the formula, indicates the steam area risk discrimination value, which is used to measure the potential risk degree of the steam area, and the larger the value is, the more significant the high risk of steam accumulation and pressure rise is, and the pressure difference, the temperature difference and the gas-liquid volume ratio in the steam area are comprehensively considered to dynamically reflect whether there is a risk of excessive steam accumulation and abnormal pressure in the steam area; indicates the pressure at the top of the steam area, which reflects the local gaseous pressure at the top and reflects the steam accumulation; Pmid represents the pressure in the middle of the vapor zone, reflects the gaseous pressure in the middle, and embodies the vertical distribution gradient. Ttop represents the temperature at the top of the vapor zone, reflects the temperature at the top of the vapor zone. T8 represents the temperature in the server 8 zone, reflects the liquid phase temperature around the server 8, and represents the heat source zone. V represents the gas-liquid volume ratio in the vapor zone, reflects the proportion of the vapor zone, and the larger the value indicates that the accumulation of gaseous state is more serious and the risk is high. Pdiff represents the pressure difference sensitive term, reflects the pressure difference between the top and bottom of the vapor zone, and the larger the pressure difference indicates that the accumulation of gaseous state at the top is more serious and the risk is high. Tdiff represents the temperature difference driving term, reflects the temperature difference between the vapor zone and the server 8 zone, and the larger the difference indicates that the heat flow is blocked and the steam is not taken away in time. Vamp represents the gas-liquid ratio amplification term, which smoothes and amplifies the influence of the gas-liquid ratio change through the natural exponential operation, prevents extreme value explosion, and ensures that the risk evaluation is both sensitive and stable. Vamp represents the gas-liquid ratio sensitivity weight factor, which uses the nonlinear least squares method to construct a training set with the historical and real-time pressure at the top of the vapor zone, the pressure in the middle of the vapor zone, the temperature at the top of the vapor zone, the temperature in the server 8 zone, and the gas-liquid volume ratio in the vapor zone, calculates the steam zone risk discriminant value for each sample, minimizes the error between the calculated steam zone risk discriminant value and the actually measured steam zone risk discriminant value, and sets the initial value of the gas-liquid ratio sensitivity weight factor to 1 to obtain the optimal gas-liquid ratio sensitivity weight factor.

[0036] In this embodiment, by fusing the multi-dimensional parameters of pressure difference, temperature difference and gas-liquid volume ratio in the vapor zone, a discriminant algorithm combining risk driving and gas-liquid ratio response adjustment is constructed to realize precise quantitative evaluation of the comprehensive risk of the vapor zone. Not only can it dynamically reflect the changes of the thermal and fluid state of the vapor zone, but also can effectively identify potential pressure abnormalities and temperature imbalances, providing reliable basis for safe operation and intelligent control of high-power density heat dissipation.

[0037] Specifically, according to the comprehensive risk identification result of the steam area, the specific process of issuing the risk cooling regulation instruction is as follows: comparing the steam area risk identification value with the risk threshold value, when the steam area risk identification value is greater than the risk threshold value, it is determined that there is an early risk, that is, there is a potential heat accumulation and pressure abnormal trend in the steam area, but it has not reached an emergency state; the regulation instruction of enhancing the cooling plate heat dissipation and accelerating the condensation backflow is issued, including improving the cooling liquid flow, improving the steam condensation efficiency and increasing the liquid backflow speed; and the control parameters of the circulating pump 6 speed and the cooling plate flow distribution are given, the circulating pump 6 speed is used to adjust the flow speed of the cooling liquid, and the cooling plate flow distribution is used to distribute the flow among the cooling plate circuits, which is transmitted to the next process; when the steam area risk identification value is less than or equal to the risk threshold value, it is determined that the current state is normal, no additional cooling plate heat dissipation enhancement and rapid condensation backflow regulation instruction is triggered, and the existing circulating pump 6 speed and cooling plate flow distribution are maintained; the steam area risk identification value, the regulation instruction and the control parameter are stored in the collaborative heat dissipation monitoring database.

[0038] In the embodiment, by comparing the steam area risk identification value with the risk threshold value in real time, the early risk is quickly identified and the hierarchical response is realized, the linkage regulation of enhancing the cooling plate heat dissipation and accelerating the condensation backflow is actively triggered when the risk is initially presented, the circulating pump 6 speed and the cooling plate flow distribution are dynamically adjusted; in the risk-free state, stable operation is maintained to avoid unnecessary energy consumption fluctuation, at the same time, the identification result and the control parameter are archived to facilitate subsequent operation analysis and strategy optimization, thereby improving the safety, response speed and operation efficiency of heat dissipation.

[0039] Specifically, the specific process of receiving risk cooling regulation instructions, performing collaborative heat dissipation, and evaluating the collaborative heat dissipation capability based on collaborative heat dissipation monitoring data is as follows: receiving regulation instructions for enhancing the heat dissipation of the cold plate and accelerating the condensation backflow, and control parameters of the circulating pump 6 speed and the cold plate flow distribution, performing linkage control of the two cooling modes, performing immersion liquid cooling and cold plate path switching and parameter preparation; during the collaborative heat dissipation operation, the temperature of the cold plate inlet 4, the pressure of the cold plate inlet 4, and the mass flow rate of the cold plate inlet 4 are obtained, and the temperature of the cold plate outlet 3 and the pressure of the cold plate outlet 3 are also obtained; the temperature difference between the cold plate outlet 3 and the cold plate inlet 4 is obtained by subtracting the temperature of the cold plate inlet 4 from the temperature of the cold plate outlet 3, and the heat exchange capacity basic quantity is obtained by multiplying the mass flow rate of the cold plate inlet 4 and the temperature difference, which measures the heat transfer capacity of the cold plate under the current flow rate and temperature difference; the pressure difference between the cold plate inlet 4 and the cold plate outlet 3 is obtained by subtracting the pressure of the cold plate outlet 3 from the pressure of the cold plate inlet 4, and the absolute value is taken to obtain the inlet-outlet pressure difference, which is used to judge the fluid flow resistance and the circulating pump 6 load; the heat pressure change quantity is obtained by dividing the sum of the inlet-outlet pressure difference and a minimum constant value by the sum of the absolute value of the inlet-outlet temperature difference and the minimum constant value, which is a parameter that comprehensively reflects the relationship between heat transfer and pressure change, and the minimum constant value is 0.001, which is used to avoid zero value and enhance numerical stability; the hyperbolic tangent function operation of the heat pressure change quantity is performed to improve the calculation stability and retain the change trend, and the heat pressure change quantity correction value is obtained; the heat exchange capacity basic quantity and the heat pressure change quantity correction value are added to obtain the collaborative heat dissipation efficiency evaluation value, which comprehensively represents the collaborative heat dissipation capability of the cold plate liquid cooling and the immersion liquid cooling under the current working condition, and is used for subsequent flow rate and circulating pump 6 speed optimization control.

[0040] wherein the specific formula of the collaborative heat dissipation efficiency evaluation value is: ; In the formula, represents the collaborative heat dissipation efficiency evaluation value, which comprehensively considers the heat transport capacity caused by temperature change and the flow state characteristics of pressure and temperature change combination, and is used to judge the heat dissipation efficiency and operation health degree to reflect the current working condition intensity, wherein the hyperbolic tangent function operation can map the pressure difference and temperature difference comprehensive quantity to the interval of 0 to 1, and suppress the impact of extreme values on the index; represents the mass flow rate of the cold plate inlet 4, and represents the cooling agent mass flowing through the cold plate per unit time, which is a direct determinant of heat transport capacity, and the greater the flow rate, the stronger the heat carrying capacity, and vice versa, which may cause heat accumulation; represents the temperature of the cold plate outlet 3, represents the temperature of the cold plate inlet 4, represents the temperature difference between the inlet and outlet, and represents the temperature change of the cooling agent after flowing through the heat exchange zone, which reflects the sensible heat absorbed by the server 8 from the cooling agent, and a too high temperature rise may indicate a heat dissipation bottleneck; P4 represents the pressure at the inlet of the cold plate 4, P3 represents the pressure at the outlet of the cold plate 3, P4-P3 represents the pressure difference between the inlet and the outlet, representing the pressure loss of the working fluid after flowing through the cold plate and the pipeline, which can be used to judge the change of flow resistance, flow passage blockage and the formation of steam area.

[0041] The mass flow rate at the inlet of the cold plate 4, the outlet temperature difference and the pressure difference between the inlet and the outlet are obtained in real time over time, and the synergistic heat dissipation performance evaluation value is calculated according to five different groups of data. As shown in Table 1, the synergistic heat dissipation performance evaluation value data table.

[0042] Table 1 Synergistic heat dissipation performance evaluation value data table

[0043] As shown in Table 1, the synergistic heat dissipation performance evaluation value data table. Figure 4 As shown in Table 1, the synergistic heat dissipation performance evaluation value data table. Figure 4 It can be seen that the synergistic heat dissipation performance evaluation value rapidly rises in the first three time points, and reaches a peak at the third time point, indicating that the heat dissipation efficiency is the highest at this time. The synergistic heat dissipation performance evaluation value again decreases below the normal working condition baseline at the fifth time point, indicating that the heat dissipation efficiency is weakened.

[0044] In this embodiment, by quickly switching the immersion liquid cooling and cold plate heat dissipation paths and completing parameter preparation after receiving the risk cooling regulation instruction, the temperature, pressure and flow rate data of the inlet and outlet of the cold plate are collected in real time, the heat exchange capacity basic quantity and the thermal pressure change quantity correction value are comprehensively calculated, and the synergistic heat dissipation performance evaluation value is generated, so as to realize the precise quantitative evaluation of the current heat dissipation performance. This not only ensures the high matching of the regulation action and the actual heat dissipation demand, but also provides a reliable basis for subsequent speed, valve and backflow strategy optimization, which helps to improve the response accuracy and overall heat dissipation efficiency.

[0045] Specifically, the circulating pump 6 speed and valve opening are adjusted according to the cooperative heat dissipation capacity, and the specific process of requesting condensation backflow adjustment is as follows: the median value, average value and fluctuation range of the cooperative heat dissipation performance evaluation value are calculated in the sliding time window, the median value can reflect the steady state level in the time window, the average value reflects the overall heat dissipation trend, and the fluctuation range is used to measure the stability of the heat dissipation performance, and the normal working condition baseline of the cold plate under the current environment is constructed; the cooperative heat dissipation performance evaluation value and the normal working condition baseline are stored in the cooperative heat dissipation monitoring database; when the cooperative heat dissipation performance evaluation value is less than or equal to the normal working condition baseline, and the inlet and outlet pressure difference is less than the pressure difference threshold, it is determined that the flow is insufficient, indicating that the flow rate of the cooling liquid in the circulation loop is too low, affecting the heat exchange efficiency; when the cooperative heat dissipation performance evaluation value is less than or equal to the normal working condition baseline, and the inlet and outlet temperature difference is less than the temperature difference threshold, it is determined that the cooling is insufficient, indicating that the cooling capacity is insufficient to take away the current generated heat; when the cooperative heat dissipation performance evaluation value is greater than the normal working condition baseline, and the inlet and outlet pressure difference is greater than the pressure difference threshold, it is determined that the circulating pump 6 speed is too high, and the circulating pump 6 speed is too fast, which increases the flow resistance and causes pipeline vibration and equipment wear; for insufficient flow, reduce the fluctuation amplitude of the circulating pump 6 speed, adjust the valve opening, and request the condensation loop to increase the backflow flow rate; for insufficient cooling, increase the branch flow rate and the circulating pump 6 speed, and increase the temperature difference to improve the heat exchange capacity; for the circulating pump 6 speed being too high, implement the circulating pump 6 speed reduction and exhaust measures, and the exhaust measures mainly discharge the accumulated gas and steam in the cooling loop by opening the automatic exhaust valve, to avoid air resistance and heat exchange efficiency reduction.

[0046] In the embodiment, the normal working condition baseline of the cold plate is established in the sliding time window, and the real-time comparison of the cooperative heat dissipation performance evaluation value with the inlet and outlet temperature difference and pressure difference is combined to accurately identify the running states of insufficient flow, insufficient cooling and circulating pump 6 speed being too high, and then dynamically adjust the circulating pump 6 speed, valve opening and backflow flow rate, to realize targeted optimization. This process can significantly improve the adaptability and heat dissipation efficiency under different working conditions, reduce energy consumption fluctuation, avoid overcooling and overheating risk, and ensure stable and efficient cooling operation.

[0047] Specifically, the specific process of judging the adjustment amount of condensation reflux by combining the cooperative heat dissipation monitoring data and the cooperative heat dissipation capacity is as follows: the condenser receives the gaseous working medium output by the two-phase cold plate 1, that is, the working medium composed of steam generated after the cold plate absorbs heat, and exchanges heat with the cold source such as the cooling tower 7 to become liquid; obtain the current liquid height of the coolant, calculate the deviation between the cooperative heat dissipation efficiency evaluation value and the normal working condition baseline within the sliding time window, and screen out the liquid height interval of the coolant when it is less than the deviation threshold, and take the median as the target liquid level height, as the liquid level to be maintained under the ideal operating state; at the same time, obtain the pressure at the top of the condenser and the pressure in the middle of the condenser; subtract the current liquid height of the coolant from the target liquid level to obtain the liquid level gap, which indicates the difference between the current liquid level and the target liquid level, and take a positive value for the liquid level gap, that is, the calculation result is a positive value, and the liquid level gap retains the actual calculation result, otherwise it is taken as 0; divide the liquid level gap by the target liquid level The liquid level relative gap ratio is obtained from the level height, which indicates the proportion of insufficient liquid level to the target liquid level. The natural logarithm operation is performed on the sum of the liquid level relative gap ratio and the constant one to obtain the liquid level driving strength value, which is the calculation result of the intensity of the liquid level insufficient demand for reflux regulation. The condensing pressure difference is obtained by subtracting the pressure in the middle of the condenser from the pressure at the top of the condenser. The positive value of the condensing pressure difference is taken, that is, the calculated result is positive, and the condensing pressure difference retains the actual calculated result, otherwise it is taken as 0. The condensing pressure difference is divided by the sum of the pressure at the top of the condenser, the pressure in the middle of the condenser and the constant one to obtain the pressure difference normalization ratio. The hyperbolic tangent function operation is performed on the pressure difference normalization ratio to obtain the pressure difference driving factor, which indicates the driving effect of the pressure difference on reflux regulation. The liquid level driving strength value is multiplied by the pressure difference driving factor to obtain the reflux regulation amount, which is finally used to adjust the speed and valve opening of the circulating pump 6 to meet the control amount of the coolant reflux demand.

[0048] The specific formula for the reflux adjustment amount is: ; Where, Indicates the reflux adjustment amount, which is used to dynamically calculate the reflux adjustment amount according to the liquid level status and the pressure difference at different positions of the condenser, thereby controlling the reflux flow or valve opening to achieve stable operation of the condensing system; Indicates the target liquid level height, which is used as a reference for liquid level control. The closer it is to the target liquid level height, the more stable the heat exchange performance. By multiplying the liquid level driving strength value with the pressure difference driving factor, the reflux adjustment amount is significantly increased only when the liquid level is insufficient and the pressure conditions are appropriate, thus achieving coordinated adjustment of liquid level and pressure. Indicates the current coolant liquid height, indicating the current actual liquid level. Compares it with the target liquid level to determine whether there is liquid shortage or excess liquid, and reflects the condenser liquid level change trend in real time. Pcond_top represents the pressure at the top of the condenser, reflects the pressure state of the gas phase zone at the upper end of the condenser, and affects the flow trend of the condensate. The difference between the middle pressure and the top pressure can determine the driving force of the liquid reflux. Pcond_mid represents the pressure in the middle of the condenser, reflects the pressure condition of the middle section of the condenser, and forms a pressure difference index with the top pressure, which is used to determine whether there is a favorable pressure gradient to promote the liquid reflux. Llevel represents the liquid level driving strength value, reflects the driving degree of the liquid level shortage on the reflux demand, ensures that when the liquid level is insufficient, the reflux demand increases, and takes the natural logarithm to suppress the influence of large gaps, so that the adjustment signal is smooth and nonlinear response. The subscript plus sign indicates that the positive value is taken. Pdiff represents the pressure difference driving factor, reflects the size of the pressure driving force of the liquid reflux in the condenser, ensures that when the pressure condition is suitable, the reflux channel is easier to open, and through the hyperbolic tangent function, the result is compressed to the range of 0 to 1, avoiding excessive adjustment caused by excessive pressure factor. The subscript plus sign indicates that the positive value is taken.

[0049] In this embodiment, the deviation of the synergistic heat dissipation performance evaluation value from the normal working condition baseline is used, combined with the cooling liquid level height and the condenser pressure difference, to dynamically calculate the condensation reflux adjustment amount, realizing the synergistic control of liquid level compensation and pressure difference driving. By data quantization and normalization processing of the liquid level gap and the pressure difference, the reflux demand can be accurately matched, avoiding the decline of heat exchange efficiency caused by insufficient liquid level and abnormal pressure difference, and ensuring the stability and efficiency of the condensation reflux, thereby improving the overall heat dissipation performance and equipment operation reliability.

[0050] Specifically, the specific process of performing reflux adjustment according to the adjustment amount of condensation reflux and conducting safety monitoring is as follows: the reflux adjustment amount is calculated in real time, the target rotating speed of the circulating pump 6 and the target opening of the valve are set according to the reflux adjustment amount when condensation reflux occurs, and the adjustment speed limit and the hysteresis interval are set, the adjustment speed limit prevents the rotating speed and the valve from changing too fast to cause impact, and the hysteresis interval refers to setting a certain tolerance range in the control process to avoid frequent switching to cause equipment wear; after performing the reflux adjustment, the monitoring process of continuously collecting data and evaluating the adjustment effect in a certain time is entered, whether the liquid level of the cooling liquid converges to the target liquid level or not and whether the condensation pressure difference decreases or not are monitored; if there is still no improvement in the two consecutive feedback observation stages, the rotating speed of the circulating pump 6 and the opening of the valve are gradually increased until the upper limit, and a request for condensation strengthening is sent to the upstream equipment, requiring the upstream equipment to improve the heat exchange capacity and speed up the condensation process; at the same time, if the liquid level of the cooling liquid exceeds the liquid level safety threshold and the condensation pressure difference exceeds the pressure difference safety threshold, the rotating speed of the circulating pump 6 and the opening of the valve are immediately limited, and an alarm is triggered to give a safety prompt through sound and light and notification; when the rotating speed of the circulating pump, the valve and the flow of the condensation circuit are adjusted, the outlet water temperature of the cooling tower 7 and the rotating speed of the fan are controlled; the liquid level of the cooling liquid, the condensation pressure difference, the reflux adjustment amount and the adjustment process are stored in the collaborative heat dissipation monitoring database with a time stamp, the liquid level safety threshold and the pressure difference safety threshold are updated and optimized, the thresholds are dynamically adjusted through historical data analysis to make them more meet the actual operation requirements.

[0051] In the embodiment, the rotating speed and the valve opening intelligent setting based on the reflux adjustment amount realize the accurate adjustment of the condensation reflux, and the speed limit and the hysteresis interval are set in the adjustment process to ensure the stability and controllability of the adjustment process. Combined with the feedback observation mechanism and the continuous optimization strategy, the reflux capacity can be gradually increased when the liquid level and the pressure difference do not meet the requirements, and the alarm can be triggered quickly when the liquid level or the pressure difference exceeds the limit to ensure the operation safety. The outlet water temperature of the cooling tower 7 and the rotating speed of the fan are controlled in linkage to realize the collaborative optimization of the condensation circuit and the cold source.

[0052] Specifically, the continuous monitoring of the cooperative heat dissipation monitoring data, the steam area comprehensive risk discrimination result, the cooperative heat dissipation capacity and the regulation amount of the condensate reflux is performed to detect the abnormality of each link state, and the specific process of abnormal regulation and control is as follows: the cooperative heat dissipation monitoring data, the steam area risk discrimination value, the cooperative heat dissipation efficiency evaluation value, the reflux regulation amount and the cooling tower 7 operation parameters including the cooling tower 7 outlet water temperature, the fan speed, the inlet and outlet water temperature difference and other operation data reflecting the cooling performance are continuously monitored to realize the abnormal detection of the operation state of each link, to judge whether the operation state is out of the normal working condition range, to identify whether there is an overrun, that is, the operation parameters exceed the preset safety threshold, a failure, that is, the key equipment and sensors stop normal work and a trend risk, that is, the parameters show a continuous deterioration trend, causing the equipment to lose stability, if there is an abnormal state, the equipment operation frequency is reduced to stop the circulating pump and pressure relief, the excess pressure is released through the exhaust valve, and an alarm prompt is sent; the whole abnormal process is subjected to whole-process data acquisition and event recording, including the trigger reason, the execution action, the execution effect information, and an event log with a time stamp is generated to mark the accurate time of the event occurrence, to realize the closed loop of risk rapid response and safety redundant protection, to shorten the time from risk discovery to disposal, and to ensure the overall equipment safety through the safety redundant strategy.

[0053] In the embodiment, through the whole-process abnormal detection of the operation state of each link, the overrunning, failure and trend risk can be identified in time, and the frequency reduction, circulating pump stop and pressure relief protection measures can be taken quickly when the abnormality occurs, and an alarm is triggered at the same time. Combined with the whole-process data acquisition and event log recording with a time stamp, reliable basis is provided for subsequent risk tracing, operation optimization and safety redundant strategy adjustment, and the safety and operation stability of the equipment are significantly improved.

[0054] It should be noted that, in this document, the relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0055] The preferred embodiments of the application disclosed above are only to facilitate the understanding of the application. The preferred embodiments do not describe all the details necessary for the practice of the application and are not intended to limit the application to the particular embodiments described. As will be obvious to one of skill in the art, modifications and changes can be made without departing from the spirit and scope of the present application. The present description is chosen and described in order to best explain the principles of the application and its practical application to thereby enable others skilled in the art to best utilize the application. The application is limited only by the claims and their full scope and equivalents.

Claims

1. A cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor zone coupling modeling, characterized in that, The method comprises the following steps: S1, real-time acquisition of collaborative heat dissipation monitoring data at each key position, data preprocessing of the collaborative heat dissipation monitoring data; S2, according to the collaborative heat dissipation monitoring data, discriminating the comprehensive risk of the steam area, and issuing a risk cooling regulation instruction according to the comprehensive risk discrimination result of the steam area; S3, receiving the risk cooling regulation instruction, performing collaborative heat dissipation, and evaluating the collaborative heat dissipation capacity based on the collaborative heat dissipation monitoring data, adjusting the rotating speed of the circulating pump (6) and the valve opening degree according to the collaborative heat dissipation capacity, and requesting condensate backflow regulation; S4, combining the collaborative heat dissipation monitoring data and the collaborative heat dissipation capacity to determine the regulation amount of the condensate backflow, executing backflow regulation according to the regulation amount of the condensate backflow and performing safety monitoring; S5, continuously monitoring the collaborative heat dissipation monitoring data, the comprehensive risk discrimination result of the steam area, the collaborative heat dissipation capacity and the regulation amount of the condensate backflow, detecting the abnormality of each link state, and realizing abnormal regulation and control.

2. The cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor region coupling modeling according to claim 1, characterized in that, The specific process of real-time acquisition of collaborative heat dissipation monitoring data at each key position is as follows: The server (8) is fixed in the sealed box, and the temperature and pressure of the server (8) area, the temperature and pressure of the top and middle of the steam area, the temperature, pressure and mass flow of the cold plate inlet (4) and the cold plate outlet (3), the temperature and pressure of the cooling liquid tank, and the pressure of the top and middle of the condenser are acquired in real time by using pressure and temperature sensors (2) and mass flow meters during the operation and collaborative heat dissipation of the server (8); the current liquid height of the cooling liquid is obtained by a liquid level sensor; the cross-sectional area and total volume of the sealed box are recorded; and the temperature, pressure, mass flow and liquid height are recorded as collaborative heat dissipation monitoring data.

3. The cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor region coupling modeling according to claim 1, characterized in that, The specific process of data preprocessing of the collaborative heat dissipation monitoring data is as follows: The collaborative heat dissipation monitoring data is subjected to missing value identification and repair, and the sliding window filling method is used to make up for the collection abnormality and short packet loss; the algorithm based on the absolute deviation of the median is used to identify and eliminate the outlying data points; the time series alignment and resampling of the collaborative heat dissipation monitoring data of different types and different sampling frequencies are performed; the wavelet transform method is used for denoising and smoothing processing of the collaborative heat dissipation monitoring data; and the collaborative heat dissipation monitoring data is standardized and normalized, and a unified timestamp and monitoring point space label are assigned, and stored in the collaborative heat dissipation monitoring database.

4. The cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor region coupling modeling according to claim 1, characterized in that, The specific process of discriminating the comprehensive risk of the steam area according to the collaborative heat dissipation monitoring data is as follows: For the steam area formed by the two-phase immersion liquid cooling method in the sealed box, the pressure at the top of the steam area, the pressure at the middle of the steam area, the temperature at the top of the steam area and the temperature of the server (8) area are obtained; the current liquid height, the cross-sectional area and the total volume of the sealed box are obtained, and for the whole steam area, the liquid volume is calculated by multiplying the current liquid height and the cross-sectional area of the sealed box, the steam volume is calculated by subtracting the liquid volume from the total volume of the sealed box, and the ratio of the steam volume to the liquid volume is obtained to obtain the gas-liquid volume ratio of the steam area; The pressure difference sensitive term is obtained by subtracting the pressure in the middle of the steam zone from the pressure at the top of the steam zone, the temperature difference driving term is obtained by subtracting the temperature of the server (8) zone from the temperature at the top of the steam zone, and the risk driving term is obtained by multiplying the pressure difference sensitive term and the temperature difference driving term; the gas-liquid ratio amplification term is obtained by multiplying the difference between the gas-liquid volume ratio in the steam zone and the constant one by the gas-liquid ratio sensitivity weight factor, taking the negative value as an exponential power, and performing a natural exponential operation; the gas-liquid ratio response adjustment term is obtained by adding the gas-liquid ratio amplification term and the constant one; and the steam zone risk discrimination value is obtained by dividing the risk driving term by the gas-liquid ratio response adjustment term.

5. The cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor region coupling modeling according to claim 1, characterized in that, The specific process of issuing the risk cooling regulation instruction according to the comprehensive risk discrimination result of the steam zone is as follows: The steam zone risk discrimination value is compared with the risk threshold value, when the steam zone risk discrimination value is greater than the risk threshold value, it is determined that it is an early risk, the regulation instruction of enhancing the cold plate heat dissipation and accelerating the condensation backflow is issued, and the control parameters of the circulating pump (6) rotating speed and the cold plate flow distribution are transmitted to the next process; When the steam zone risk discrimination value is less than or equal to the risk threshold value, it is determined that the current state is normal, no additional cold plate heat dissipation enhancement and rapid condensation backflow regulation instruction is triggered, and the existing circulating pump (6) rotating speed and cold plate flow distribution are maintained; The steam zone risk discrimination value, the regulation instruction and the control parameters are stored in the collaborative heat dissipation monitoring database.

6. The cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor region coupling modeling according to claim 1, characterized in that, The specific process of receiving the risk cooling regulation instruction, performing the collaborative heat dissipation, and evaluating the collaborative heat dissipation capacity based on the collaborative heat dissipation monitoring data is as follows: The regulation instruction of enhancing the cold plate heat dissipation and accelerating the condensation backflow and the control parameters of the circulating pump (6) rotating speed and the cold plate flow distribution are received, the immersion liquid cooling and the cold plate path switching and parameter preparation are performed; During the collaborative heat dissipation operation, the temperature of the cold plate inlet (4), the pressure of the cold plate inlet (4) and the mass flow rate of the cold plate inlet (4) are obtained, and the temperature of the cold plate outlet (3) and the pressure of the cold plate outlet (3) are also obtained; The inlet and outlet temperature difference is obtained by subtracting the temperature of the cold plate inlet (4) from the temperature of the cold plate outlet (3), the heat exchange capacity basic quantity is obtained by multiplying the mass flow rate of the cold plate inlet (4) and the inlet and outlet temperature difference, the inlet and outlet pressure difference is obtained by subtracting the pressure of the cold plate outlet (3) from the pressure of the cold plate inlet (4) and taking the absolute value, the thermal pressure change quantity is obtained by dividing the sum of the inlet and outlet pressure difference and the minimum constant value by the sum of the absolute value of the inlet and outlet temperature difference and the minimum constant value, and the thermal pressure change quantity is corrected by a hyperbolic tangent function operation to obtain the thermal pressure change quantity correction value; the collaborative heat dissipation efficiency evaluation value is obtained by adding the heat exchange capacity basic quantity and the thermal pressure change quantity correction value.

7. The cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor region coupling modeling according to claim 1, characterized in that, The specific process of adjusting the circulating pump (6) rotating speed and the valve opening degree according to the collaborative heat dissipation capacity and requesting the condensation backflow regulation is as follows: The median value, the average value and the fluctuation range of the collaborative heat dissipation efficiency evaluation value in the sliding time window are calculated to construct the normal working condition baseline of the cold plate under the current environment; The collaborative heat dissipation efficiency evaluation value and the normal working condition baseline are stored in the collaborative heat dissipation monitoring database; When the collaborative heat dissipation efficiency evaluation value is less than or equal to the normal working condition baseline, and the inlet and outlet pressure difference is less than the pressure difference threshold value, it is determined that the flow rate is insufficient; When the cooperative heat dissipation performance evaluation value is less than or equal to the normal working condition baseline, and the inlet and outlet temperature difference is less than the temperature difference threshold, it is determined that the cooling supply is insufficient; When the cooperative heat dissipation performance evaluation value is greater than the normal working condition baseline, and the inlet and outlet pressure difference is greater than the pressure difference threshold, it is determined that the circulating pump (6) speed is too high; For insufficient flow, the fluctuation amplitude of the circulating pump (6) speed is reduced, the valve opening is adjusted, and the condensing circuit is requested to increase the backflow flow; for insufficient cooling supply, the branch flow and the circulating pump (6) speed are increased, and the temperature difference is increased to improve the heat exchange capacity; for the circulating pump (6) speed being too high, the circulating pump (6) speed reduction and exhaust measures are implemented.

8. The cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor region coupling modeling according to claim 1, characterized in that, The specific process of judging the adjustment amount of the condensing backflow by combining the cooperative heat dissipation monitoring data and the cooperative heat dissipation capacity is as follows: The condenser receives the gaseous working medium output by the two-phase cold plate (1), exchanges heat with the cold source to become liquid, obtains the current cooling liquid level, calculates the deviation of the cooperative heat dissipation performance evaluation value from the normal working condition baseline in the sliding time window, and selects the cooling liquid level interval when the deviation is less than the deviation threshold, and takes the median as the target liquid level; at the same time, the pressure at the top of the condenser and the pressure in the middle of the condenser are obtained; The target liquid level is subtracted from the current cooling liquid level to obtain the liquid level gap, and the positive value of the liquid level gap is taken, that is, the calculation result is positive, and the liquid level gap retains the actual calculation result, otherwise 0 is taken; the liquid level gap is divided by the target liquid level to obtain the liquid level relative gap ratio, and the sum of the liquid level relative gap ratio and the constant one is subjected to natural logarithm operation to obtain the liquid level driving strength value; the condensing pressure difference is obtained by subtracting the condenser middle pressure from the condenser top pressure, and the positive value of the condensing pressure difference is taken, that is, the calculation result is positive, and the condensing pressure difference retains the actual calculation result, otherwise 0 is taken; the condensing pressure difference is divided by the sum of the condenser top pressure, the condenser middle pressure and the constant one to obtain the pressure difference normalization ratio, and the pressure difference normalization ratio is subjected to hyperbolic tangent function operation to obtain the pressure difference driving factor; the liquid level driving strength value is multiplied by the pressure difference driving factor to obtain the backflow adjustment amount.

9. The cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor region coupling modeling according to claim 1, characterized in that, The specific process of performing backflow adjustment and safety monitoring according to the adjustment amount of the condensing backflow is as follows: The backflow adjustment amount is calculated in real time, the target speed of the circulating pump (6) and the target opening of the valve during condensing backflow are set according to the backflow adjustment amount, and the limit of the adjustment rate and the hysteresis interval are set; after executing the backflow adjustment, enter the feedback observation stage, monitor whether the cooling liquid level converges to the target liquid level and whether the condensing pressure difference decreases; if there is still no improvement in the continuous two rounds of feedback observation stage, gradually increase the circulating pump (6) speed and the valve opening until the upper limit, and send a request for condensing strengthening to the upstream equipment; At the same time, if it is detected that the cooling liquid level exceeds the liquid level safety threshold and the condensing pressure difference exceeds the pressure difference safety threshold, the circulating pump (6) speed and the valve opening are immediately limited, and an alarm is triggered; when the circulating pump (6) speed, the valve and the condensing circuit flow adjustment are executed, the outlet water temperature of the cooling tower (7) and the fan speed are controlled; The liquid height of the cooling liquid, the condensing pressure difference, the reflux adjustment amount, and the adjustment process are stored in the cooperative heat dissipation monitoring database with a time stamp, and the liquid level safety threshold and the pressure difference safety threshold are optimized and updated.

10. The cold plate-immersion liquid cooling synergistic heat dissipation method based on vapor region coupling modeling according to claim 1, characterized in that, The continuous monitoring of the cooperative heat dissipation monitoring data, the steam area comprehensive risk discrimination result, the cooperative heat dissipation capacity and the condensation reflux adjustment amount is used for abnormal detection of the state of each link, and the specific process of abnormal regulation is as follows: The cooperative heat dissipation monitoring data, the steam area risk discrimination value, the cooperative heat dissipation efficiency evaluation value, the reflux adjustment amount and the cooling tower (7) operation parameter are continuously monitored to realize abnormal detection of the operation state of each link, identify whether there is an out-of-limit, failure and trend risk, if there is an abnormal state, reduce the equipment operation frequency and stop the circulating pump and pressure relief, and issue an alarm prompt; The whole abnormal process is subjected to full-process data acquisition and event recording, including trigger reason, execution action, execution effect information, and a time-stamped event log is generated to realize risk rapid response and safety redundancy protection closed loop.

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