Leakage monitoring method and system of data center CDU system

Abstract

The invention provides a leakage monitoring method and system for a data center CDU system, and relates to the technical field of CDU system leakage monitoring. According to the leakage monitoring method and system, real-time monitoring liquid leakage signals, water supplementing data and internal pressure data of the CDU system and liquid level change data of a surge tank are obtained; firstly, whether a liquid leakage risk exists or not is preliminarily judged according to a real-time monitored liquid leakage signal; when the liquid leakage risk is detected, comprehensive analysis is further carried out by combining the water supplementing frequency, the internal pressure condition, the liquid level change of the surge tank and other data, so that whether liquid leakage occurs or not is judged more accurately. Through multi-dimensional data cross validation, the probability of misjudgment and missed judgment is effectively reduced, the accuracy and reliability of liquid leakage monitoring are improved, and safe and stable operation of a data center CDU system is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of CDU system leakage monitoring, and in particular to a leakage monitoring method and system for a CDU system in a data center. Background Art

[0002] As the core infrastructure of the information age, data centers are responsible for the storage, processing and transmission of massive amounts of data. Their stable operation is crucial to all areas of modern society. With the rapid development of information technology, the scale of data centers continues to expand, and the requirements for cooling systems are becoming higher and higher. As a key component of data center liquid cooling technology, the CDU (Cooling Distribution Unit) system is responsible for effectively distributing the cooling medium to each server cabinet or device to ensure that the equipment operates in a suitable temperature environment and prevent performance degradation, failures, and even equipment damage caused by overheating.

[0003] The CDU system is usually composed of multiple complex components, including but not limited to pipeline networks, valves, pumps, and pressure-stabilizing tanks. The cooling medium circulates in the closed loop formed by these components to achieve heat transfer and dissipation. However, since the CDU system is in high-intensity operation for a long time, the pipe connections may become loose due to thermal expansion and contraction, vibration and other factors, the valves may not seal tightly due to wear and aging, and pump failures may also cause cooling medium leakage. If these potential leakage risk points are not monitored and handled in time, they may lead to a large loss of cooling medium, thereby affecting the cooling effect of the entire data center. In severe cases, it may even cause serious consequences such as server overheating and shutdown, bringing huge economic losses and data security risks to the operation of the data center.

[0004] In the field of leakage detection of CDU system in data center, the following methods can be used for leakage monitoring: Based on leakage sensors: By placing leakage sensors at key locations of the CDU system, such as leak positioning ropes, when the cooling medium leaks and contacts the sensor, the sensor sends a signal to indicate the risk of leakage. This method can achieve real-time monitoring of local areas, with a certain degree of timeliness and accuracy, but its monitoring range is relatively limited. Leakage in some hidden locations or areas not covered by sensors may not be detected in time, and there is a risk of missed judgment. In addition, if the sensor itself fails, is damaged, or is interfered with by the outside world, it may cause misjudgment, resulting in unnecessary maintenance operations and waste of resources.

[0005] Monitoring based on pressure sensors: Install pressure sensors in the pipeline network of the CDU system to monitor the pressure changes inside the system in real time. Under normal circumstances, the pressure in the CDU system should be maintained within a certain range. When a leak occurs, the system pressure will show a downward trend or abnormal pressure changes due to the loss of cooling medium. However, pressure changes may be affected by many factors, such as fluctuations in the system's operating status, changes in the external ambient temperature, etc., and leak judgment based solely on pressure data may lead to misjudgment. For example, during the system startup or shutdown process, normal fluctuations in pressure may be mistaken for leaks, while some minor leaks may have little effect on the pressure in the early stages, making them difficult to accurately identify and there is a possibility of missed judgments.

[0006] Monitoring the liquid level changes of the surge tank based on the liquid level sensor: By monitoring the liquid level changes of the surge tank in the CDU system, it is indirectly judged whether there is leakage. When the cooling medium leaks, the liquid level of the surge tank may show a downward trend or reach a specific leakage threshold. However, the liquid level change may also be affected by other factors, such as the water replenishment operation of the system, the accuracy and stability of the liquid level sensor, etc., and relying solely on the liquid level change to judge the leakage may result in misjudgment or omission.

[0007] In summary, the existing data center CDU system leakage detection methods have certain limitations and shortcomings in practical applications, especially the problems of misjudgment and missed judgment, which are difficult to meet the data center's high-precision and high-reliability requirements for CDU system leakage monitoring. Therefore, there is an urgent need for a leakage monitoring method and system that can integrate multiple data and effectively reduce the probability of misjudgment and missed judgment, so as to improve the operational safety and stability of the data center CDU system and ensure the normal operation of the data center. Summary of the invention

[0008] The present invention aims to solve at least one of the above-mentioned technical problems existing in the prior art.

[0009] To this end, a first aspect of the present invention provides a leakage monitoring method for a data center CDU system.

[0010] A second aspect of the present invention provides a leakage monitoring system for a data center CDU system.

[0011] The present invention provides a leakage monitoring method for a data center CDU system, comprising: Acquire the collected data of the CDU system, wherein the collected data includes the real-time monitoring leakage signal of the CDU system, the water replenishment data of the CDU system, the internal pressure data of the CDU system, and the liquid level change data of the pressure regulating tank in the CDU system; Preliminarily determine whether there is a leakage risk in the CDU system based on the real-time monitoring leakage signal; When the real-time monitoring leakage signal indicates that there is a risk of leakage in the CDU system, it is determined whether the number of water replenishment of the CDU system exceeds the set number within the preset time period according to the water replenishment data of the CDU system. If it does not exceed the set number, it is determined that there is no leakage in the CDU system; When the number of water replenishment times of the CDU system exceeds the set number within the preset time period, it is judged whether there is an abnormal pressure in the CDU system based on the internal pressure data of the CDU system. The abnormal pressure includes that the pressure is in a downward trend and / or the pressure suddenly changes; and it is judged whether the liquid level leakage of the pressure-regulating tank reaches the set value based on the liquid level change data of the pressure-regulating tank in the CDU system; when there is an abnormal pressure and / or the liquid level leakage of the pressure-regulating tank reaches the set value, it is determined that the CDU system is leaking, otherwise it is determined that the CDU system is not leaking.

[0012] The leakage monitoring method of the data center CDU system according to the above technical solution of the present invention may also have the following additional technical features: In the above technical scheme, when the real-time monitoring leakage signal indicates that there is no leakage risk in the CDU system, it is judged whether there is an abnormal pressure in the CDU system based on the internal pressure data of the CDU system, and the abnormal pressure includes that the pressure is in a downward trend and / or the pressure changes suddenly; and it is judged whether the leakage of the pressure-regulating tank liquid level reaches the set value based on the liquid level change data of the pressure-regulating tank in the CDU system; when there is an abnormal pressure and the leakage of the pressure-regulating tank liquid level reaches the set value, it is determined that the CDU system has leaked, otherwise it is determined that the CDU system has not leaked.

[0013] In the above technical solution, judging whether there is an abnormal situation in which the pressure in the CDU system is in a downward trend according to the internal pressure data of the CDU system includes: Compare the latest collected internal pressure data of the CDU system with the last collected internal pressure data of the CDU system; If the latest collected internal pressure data of the CDU system is less than the internal pressure data of the CDU system collected last time, the number of times will be accumulated; if the latest collected internal pressure data of the CDU system is greater than the internal pressure data of the CDU system collected last time, the number of times will be cleared; When the accumulated number of times is greater than or equal to the set number of times, it is determined that the pressure in the CDU system is on a downward trend.

[0014] In the above technical solution, judging whether there is an abnormal situation of sudden pressure change in the CDU system according to the internal pressure data of the CDU system includes: Compare the latest collected internal pressure data of the CDU system with the last collected internal pressure data of the CDU system; If the latest collected internal pressure data of the CDU system is less than the last collected internal pressure data of the CDU system, and the difference between the two is greater than the mutation set value, it is determined that there is a pressure mutation in the CDU system.

[0015] In the above technical solution, judging whether the liquid level leakage of the pressure-suppressing tank reaches the set value according to the liquid level change data of the pressure-suppressing tank in the CDU system includes: Set the leak scanning cycle, leak comparison times and leak volume threshold; The liquid level data of the surge tank is recorded cyclically according to the set leakage scanning cycle; In each leakage scanning cycle, the change in the liquid level of the surge tank is compared with the leakage threshold; When the number of leakage scanning cycles in which the change in the liquid level of the surge tank is greater than or equal to the leakage threshold value continuously reaches the leakage comparison number, it is determined that the leakage of the liquid level of the surge tank reaches the set value.

[0016] In the above technical solution, the method for acquiring the real-time monitoring leakage signal of the CDU system includes: A leakage locating rope is arranged at a fixed point, and the current change information of the leakage locating rope is collected as a real-time monitoring leakage signal; when the leakage locating rope contacts the liquid and causes the current change to reach the set threshold, the real-time monitoring leakage signal indicates that the CDU system has a leakage risk; otherwise, the real-time monitoring leakage signal indicates that the CDU system has no leakage risk.

[0017] The present invention provides a leakage monitoring system for a data center CDU system, comprising: The data acquisition module acquires the real-time monitoring leakage signal of the CDU system, the water replenishment data of the CDU system, the internal pressure data of the CDU system, and the liquid level change data of the pressure regulating tank in the CDU system through the acquisition device; A communication module, connected to the data acquisition module, for data transmission; The control module is connected to the communication module and uses the leakage monitoring method described in any one of the above technical solutions to monitor the leakage of the CDU system of the data center.

[0018] In the above technical solution, the data acquisition module includes: The leakage sensor is connected to the leakage positioning rope to obtain the current signal of the leakage positioning rope and use it as a real-time monitoring leakage signal; Pressure sensors: at least two pressure sensors are respectively installed on the main pipeline of the CDU system and the outlet pipeline of the pressure regulating tank, and are used to measure the internal pressure data of the CDU system; A liquid level sensor is arranged in the pressure stabilizing tank and is used to monitor the liquid level in the pressure stabilizing tank; The switch detection unit is used to collect the switch status of the water supply pump, circulation pump and pressure stabilizing valve in the CDU system.

[0019] In the above technical solution, the control module includes: A switch quantity input unit receives a collection signal from a switch quantity detection unit; Analog input unit, receiving the acquisition signal of the sensor; The data processing unit is used to obtain the water replenishment times of the CDU system according to the acquired switch quantity and analog quantity, calculate and compare the internal pressure data of the CDU system, and calculate and compare the liquid level change of the pressure regulating tank; The leakage judgment unit is connected to the data processing unit and outputs a final leakage judgment result according to the output data of the data processing unit.

[0020] The above technical solution also includes: The human-computer interaction interface is used to display collected data, alarm display, leakage parameter setting, pressure trend parameter setting, water replenishment times and recording time setting.

[0021] In summary, due to the adoption of the above technical features, the beneficial effects of the present invention are: The present invention provides a leakage monitoring method and system for a data center CDU system, which makes a leakage judgment by comprehensively using a variety of data, including real-time monitoring of leakage signals, water replenishment data, internal pressure data, and liquid level change data of a surge tank, etc., thereby avoiding the one-sidedness of single data judgment. For example, when the real-time monitoring of the leakage signal shows that there is a risk of leakage, a comprehensive analysis is further performed in combination with data such as the number of water replenishment times, internal pressure conditions, and liquid level changes in the surge tank. Only when multiple related data indicate leakage is it finally determined that a leakage has occurred, which effectively reduces the situation of misjudgment or missed judgment due to a single data, and improves the accuracy and reliability of leakage monitoring.

[0022] Secondly, the existing method based on a single leakage sensor is susceptible to factors such as sensor failure and external interference, resulting in misjudgment or missed judgment. This method uses multi-dimensional data cross-validation. Even if a sensor fails or is abnormal, it can be supplemented and corrected through other data, thereby significantly reducing the probability of misjudgment and missed judgment, ensuring that the leakage problem of the CDU system can be discovered in a timely and accurate manner, and ensuring the safety and normal operation of the data center equipment.

[0023] In addition, this method can monitor various data of the CDU system in real time and issue early warnings through changes in multiple data indicators at the early stage of leakage. For example, when the internal pressure shows an abnormal downward trend or the leakage of the surge tank liquid level gradually approaches the set value, the operation and maintenance personnel can detect the potential leakage risk in advance and take maintenance measures in time, such as checking pipeline connections, valve seals, pump operating status, etc., to avoid further expansion of the leakage problem and reduce damage to data center equipment and impact on operations.

[0024] Finally, the CDU system will be affected by many factors during actual operation, such as fluctuations in the system operating state, changes in the external ambient temperature, etc. These factors may cause single data to be abnormal. By comprehensively considering multiple related data, the present invention can better adapt to complex and changeable operating conditions, accurately distinguish between normal operating fluctuations and actual leakage, avoid misjudgment caused by changes in operating conditions, and ensure that the leakage monitoring system can work stably and reliably under various conditions.

[0025] Additional aspects and advantages of the present invention will become apparent in the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a partial piping structure of a data center CDU system in one embodiment of the present invention; Figure 2 is a flow chart of a leakage monitoring method for a data center CDU system according to an embodiment of the present invention; in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and the component names is as follows: 1. Circulation pump, 2. Liquid level sensor, 3. Pressure regulating tank, 4. High liquid level switch, 5. Low liquid level switch, 6. Water supply tank, 7. Water supply pump, 8. Main line pressure sensor, 9. Liquid leakage sensor, 10. Pressure regulating tank pressure sensor, 11. Air supply solenoid valve, 12. Exhaust solenoid valve. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0029] Refer to the following Figure 1 and Figure 2 The leakage monitoring method and system of a data center CDU system provided in some embodiments of the present invention are described.

[0030] Figure 1 The following figure shows the partial piping structure of the CDU system. Figure 1 As shown in the figure, the CDU system is mainly composed of a circulation pump 1, a liquid level sensor 2, a pressure regulating tank 3, a high liquid level switch 4, a low liquid level switch 5, a water supply tank 6, a water supply pump 7, a main line pressure sensor 8, a leakage sensor 9, a pressure regulating tank pressure sensor 10, a pressure regulating valve and other components connected by pipelines; the pressure regulating valve includes an air supply solenoid valve 11 and an exhaust solenoid valve 12; since the circulation pump 1 and the water supply pump 7 are usually driven by a motor, Figure 1 In the illustrated embodiment, M represents the drive motor. The circulating pump 1 is responsible for driving the cooling medium to circulate in the system pipeline. The liquid level sensor 2 is used to monitor the liquid level changes in the pressure-suppressing tank 3 and convert the liquid level information into an electrical signal output so that the system can perform liquid level control and leakage monitoring. The pressure-suppressing tank 3 plays the role of stabilizing the pressure and accommodating part of the cooling medium in the system. Its liquid level changes are of great significance for determining whether there is leakage. The water-supplementing tank 6 is used to store spare cooling medium. When the system needs to be replenished with water, the water-supplementing pump 7 delivers the cooling medium in the water-supplementing tank 6 to the system to maintain the normal operation and pressure balance of the system. The high liquid level switch 4 and the low liquid level switch 5 are respectively used to monitor the high and low limit positions of the liquid level in the water-supplementing tank 6. When the liquid level exceeds or falls below the set range, the corresponding switch action will be triggered. The main line pressure sensor 8 is used to monitor the pressure situation in the system in real time. The pressure data detected by it is crucial to determine whether there is a risk of leakage in the system. The leakage sensor 9 is arranged at the key position of the CDU system, such as under the pipeline or around the equipment. When the cooling medium leaks and contacts the sensor, the sensor will send a signal to indicate the risk of leakage. The specific location of the leakage sensor 9 is well known to those skilled in the art. Since there are a large number of leakage sensors 9, they are usually arranged at different risk points and do not have to be directly connected to the pipeline. Figure 1 Only the leakage sensor 9 is schematically shown. The surge tank pressure sensor 10 is installed on the outlet pipeline of the surge tank 3 to monitor the change of the outlet pressure of the surge tank 3, providing an important basis for leakage judgment. The air supply solenoid valve 11 and the exhaust solenoid valve 12 are used to control the air supply and exhaust operations of the system to maintain the pressure balance and normal operation in the system.

[0031] The entire piping system forms a closed loop. The cooling medium circulates in the pipeline under the action of the circulating pump 1, passes through various components, and realizes heat transfer and dissipation. At the same time, the operating status of the system is monitored and controlled in real time through various sensors and control elements to ensure normal cooling and safe operation of data center equipment.

[0032] It should be noted that not all of the signal acquisition devices in the above components are necessary components of the traditional CDU system, but are adaptive settings based on the signal acquisition requirements of the present invention. Of course, the information that needs to be collected in the present invention can also partially use the original signal acquisition devices of the CDU system.

[0033] Based on the above CDU system, some embodiments of the present application provide a leakage monitoring method for a CDU system in a data center.

[0034] like Figure 2 As shown, the first embodiment of the present invention proposes a leakage monitoring method for a data center CDU system, including the following steps S1 to S5.

[0035] S1. Acquire collected data of the CDU system, wherein the collected data includes a real-time monitoring leakage signal of the CDU system, water replenishment data of the CDU system, internal pressure data of the CDU system, and liquid level change data of the pressure-suppressing tank 3 in the CDU system.

[0036] In a specific embodiment, the method for acquiring the real-time monitoring leakage signal of the CDU system in step S1 includes: A leakage locating rope is arranged at a fixed point, and the current change information of the leakage locating rope is collected as a real-time monitoring leakage signal; when the leakage locating rope contacts the liquid and causes the current change to reach the set threshold, the real-time monitoring leakage signal indicates that the CDU system has a leakage risk; otherwise, the real-time monitoring leakage signal indicates that the CDU system has no leakage risk.

[0037] It should be noted that the leak detection rope is a sensing device used to detect liquid leaks. Its basic working principle is based on the resistance change of conductive materials. The leak detection rope usually consists of a spiral frame and a set of (two) conductive cores. The spiral frame mainly plays the role of supporting and stabilizing the structure. The two conductive cores are firmly attached to the two sides of the spiral frame. Under normal conditions, there is an insulating barrier of the spiral frame between the two conductive cores. When the leak detection rope comes into contact with water or other liquids, the liquid will form a low resistance path between the conductive cores, resulting in a change in current. The detection circuit monitors this change in current. When the set threshold is reached, the alarm system is triggered or the relevant equipment is shut down to prevent further leakage of the liquid or damage to the equipment.

[0038] In the CDU system, the leak detection rope is usually placed at key locations prone to leakage, such as pipeline connections, near valves, and at the bottom of equipment, to ensure that potential leakage areas are covered as much as possible. However, research has found that due to the difficulty of leak detection ropes in fully covering the CDU system and its own reliability issues, in actual applications, real-time monitoring of leakage signals can only be used as a reference for judging leakage risks.

[0039] S2. Preliminarily determine whether there is a risk of leakage in the CDU system based on the real-time monitoring leakage signal. Under the requirement of high reliability, if it is preliminarily determined that there is a risk of leakage, then execute steps S3 and S4. If it is preliminarily determined that there is no risk of leakage, then execute step S5.

[0040] S3. When the real-time monitoring leakage signal indicates that there is a leakage risk in the CDU system, it is determined whether the number of water replenishment times of the CDU system exceeds the set number within the preset time period according to the water replenishment data of the CDU system. If it does not exceed the set number, it is determined that there is no leakage in the CDU system.

[0041] S4. When the number of water replenishment times of the CDU system exceeds the set number within the preset time period, determine whether there is an abnormal pressure in the CDU system based on the internal pressure data of the CDU system. The abnormal pressure includes a downward trend and / or a sudden change in pressure; and determine whether the liquid level leakage of the pressure-suppressing tank 3 reaches the set value based on the liquid level change data of the pressure-suppressing tank 3 in the CDU system; when there is an abnormal pressure and / or the liquid level leakage of the pressure-suppressing tank 3 reaches the set value, it is determined that the CDU system is leaking, otherwise it is determined that the CDU system is not leaking.

[0042] S5. When the real-time monitoring leakage signal indicates that there is no leakage risk in the CDU system, determine whether there is an abnormal pressure in the CDU system based on the internal pressure data of the CDU system. The abnormal pressure includes a downward trend and / or a sudden change in pressure; and determine whether the liquid level leakage of the surge tank 3 reaches the set value based on the liquid level change data of the surge tank 3 in the CDU system; when there is an abnormal pressure and the liquid level leakage of the surge tank 3 reaches the set value, it is determined that the CDU system has a leakage, otherwise it is determined that the CDU system has no leakage.

[0043] In some embodiments, in steps S4 and S5, judging whether there is an abnormal situation in which the pressure in the CDU system is in a downward trend according to the internal pressure data of the CDU system includes: Compare the latest collected internal pressure data of the CDU system with the last collected internal pressure data of the CDU system; If the latest collected internal pressure data of the CDU system is less than the internal pressure data of the CDU system collected last time, the number of times will be accumulated; if the latest collected internal pressure data of the CDU system is greater than the internal pressure data of the CDU system collected last time, the number of times will be cleared; When the accumulated number of times is greater than or equal to the set number of times, it is determined that the pressure in the CDU system is on a downward trend.

[0044] In some embodiments, in steps S4 and S5, judging whether there is an abnormal pressure sudden change in the pressure of the CDU system according to the internal pressure data of the CDU system includes: Compare the latest collected internal pressure data of the CDU system with the last collected internal pressure data of the CDU system; If the latest collected internal pressure data of the CDU system is less than the last collected internal pressure data of the CDU system, and the difference between the two is greater than the mutation set value, it is determined that there is a pressure mutation in the CDU system.

[0045] In some embodiments, in steps S4 and S5, judging whether the liquid level leakage of the pressure-surge tank 3 reaches a set value according to the liquid level change data of the pressure-surge tank 3 in the CDU system includes: Set the leak scanning cycle, leak comparison times and leak volume threshold; The liquid level data of the surge tank 3 is recorded cyclically according to the set leakage scanning cycle; In each leakage scanning cycle, the liquid level change of the pressure-surge tank 3 is compared with the leakage threshold; When the number of leakage scanning cycles in which the liquid level change of the surge tank 3 is greater than or equal to the leakage threshold value reaches the leakage comparison number, it is determined that the liquid level leakage of the surge tank 3 reaches the set value.

[0046] Based on the above steps S1-S5, it can be known that in the method of the present invention, a system leak is determined only in the following two cases: The first case: the real-time monitoring of the leakage signal indicates that the CDU system has a leakage risk, and it is determined that the water replenishment times of the CDU system exceed the set times within the preset time period, and there is an abnormal pressure in the CDU system or the liquid level leakage of the pressure regulating tank 3 reaches the set value, then it is determined that the CDU system has a leakage.

[0047] In the second case, although the real-time monitoring leakage signal does not indicate that there is a leakage risk in the CDU system, there is an abnormal pressure in the CDU system and the liquid level leakage of the surge tank 3 reaches the set value at the same time, it is determined that the CDU system is leaking.

[0048] Based on the above judgment, the false judgment and misjudgment of leakage in the CDU system can be effectively avoided, thus improving the system reliability.

[0049] Other embodiments of the present invention provide a leakage monitoring system for a data center CDU system, including: a data acquisition module, a communication module and a control module.

[0050] The data acquisition module obtains the real-time monitoring leakage signal of the CDU system, the water replenishment data of the CDU system, the internal pressure data of the CDU system, and the liquid level change data of the pressure regulating tank 3 in the CDU system through the acquisition device. The communication module is connected to the data acquisition module for data transmission. The control module is connected to the communication module and uses the leakage monitoring method described in any of the above embodiments to monitor the leakage of the CDU system in the data center.

[0051] In some embodiments, the data acquisition module includes: a liquid leakage sensor 9, a pressure sensor, a liquid level sensor 2 and a switch quantity detection unit.

[0052] The leakage sensor 9 is connected to the positioning leakage rope to obtain the current signal of the positioning leakage rope and use it as a real-time monitoring leakage signal; at least two pressure sensors are respectively installed on the main pipeline of the CDU system and the outlet pipeline of the pressure-stabilizing tank 3 to measure the internal pressure data of the CDU system; the liquid level sensor 2 is arranged in the pressure-stabilizing tank 3 to monitor the liquid level in the pressure-stabilizing tank 3; the switch detection unit is used to collect the switching status of the water supply pump 7, the circulation pump 1 and the pressure-stabilizing valve in the CDU system, thereby realizing the recording of the number of water supply times and the detection of the liquid level leakage of the pressure-stabilizing tank 3. For example, each time the water supply pump 7 is turned on and off, it indicates that the CDU system has been replenished once.

[0053] In some embodiments, the control module includes: a switch quantity input unit, an analog quantity input unit, a data processing unit and a leakage determination unit.

[0054] The switch quantity input unit receives the acquisition signal of the switch quantity detection unit; the analog quantity input unit receives the acquisition signal of the sensor; the data processing unit is used to obtain the water replenishment times of the CDU system according to the acquired switch quantity and analog quantity, calculate and compare the internal pressure data of the CDU system, and calculate and compare the liquid level change of the pressure regulating tank 3; the leakage judgment unit is connected to the data processing unit, and outputs the final leakage judgment result according to the output data of the data processing unit.

[0055] In some embodiments, the leakage monitoring system further includes a human-computer interaction interface.

[0056] The human-computer interaction interface is used to display the collected data, alarm display, leakage parameter setting, pressure trend parameter setting, water replenishment times and recording time setting. For example, the water replenishment setting times, mutation setting values, leakage scanning cycles, leakage comparison times and leakage thresholds in steps S3-S5 can be manually set through the human-computer interaction interface to meet different reliable operation and maintenance needs.

[0057] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A leakage monitoring method for a CDU system in a data center, characterized in that: include: Acquire the collected data of the CDU system, wherein the collected data includes the real-time monitoring leakage signal of the CDU system, the water replenishment data of the CDU system, the internal pressure data of the CDU system, and the liquid level change data of the pressure regulating tank in the CDU system; Preliminarily determine whether there is a leakage risk in the CDU system based on the real-time monitoring leakage signal; When the real-time monitoring leakage signal indicates that there is a risk of leakage in the CDU system, it is determined whether the number of water replenishment of the CDU system exceeds the set number within the preset time period according to the water replenishment data of the CDU system. If it does not exceed the set number, it is determined that there is no leakage in the CDU system; When the number of water replenishment times of the CDU system exceeds the set number within the preset time period, it is judged whether there is an abnormal pressure in the CDU system based on the internal pressure data of the CDU system. The abnormal pressure includes that the pressure is in a downward trend and / or the pressure suddenly changes; and it is judged whether the liquid level leakage of the pressure-regulating tank reaches the set value based on the liquid level change data of the pressure-regulating tank in the CDU system; when there is an abnormal pressure and / or the liquid level leakage of the pressure-regulating tank reaches the set value, it is determined that the CDU system is leaking, otherwise it is determined that the CDU system is not leaking.

2. The leakage monitoring method of a data center CDU system according to claim 1 is characterized in that: When the real-time monitoring leakage signal indicates that there is no leakage risk in the CDU system, determine whether there is an abnormal pressure in the CDU system based on the internal pressure data of the CDU system. The abnormal pressure includes a downward trend and / or a sudden change in pressure; and determine whether the liquid level leakage of the pressure-regulating tank has reached a set value based on the liquid level change data of the pressure-regulating tank in the CDU system; when there is an abnormal pressure and the liquid level leakage of the pressure-regulating tank has reached a set value, it is determined that the CDU system has a leakage, otherwise it is determined that the CDU system has no leakage.

3. The leakage monitoring method of a data center CDU system according to claim 1 or 2, characterized in that: Based on the internal pressure data of the CDU system, it is determined whether there is an abnormal situation in which the pressure in the CDU system is on a downward trend, including: Compare the latest collected internal pressure data of the CDU system with the last collected internal pressure data of the CDU system; If the latest collected internal pressure data of the CDU system is less than the internal pressure data of the CDU system collected last time, the number of times will be accumulated; if the latest collected internal pressure data of the CDU system is greater than the internal pressure data of the CDU system collected last time, the number of times will be cleared; When the accumulated number of times is greater than or equal to the set number of times, it is determined that the pressure in the CDU system is on a downward trend.

4. The leakage monitoring method of a data center CDU system according to claim 1 or 2, characterized in that: According to the internal pressure data of the CDU system, it is judged whether there is an abnormal pressure change in the CDU system, including: Compare the latest collected internal pressure data of the CDU system with the last collected internal pressure data of the CDU system; If the latest collected internal pressure data of the CDU system is less than the last collected internal pressure data of the CDU system, and the difference between the two is greater than the mutation set value, it is determined that there is a pressure mutation in the CDU system.

5. The leakage monitoring method of a data center CDU system according to claim 1 or 2, characterized in that: The method of judging whether the liquid level leakage of the pressure regulating tank reaches a set value according to the liquid level change data of the pressure regulating tank in the CDU system includes: Set the leak scanning cycle, leak comparison times and leak volume threshold; The liquid level data of the surge tank is recorded cyclically according to the set leakage scanning cycle; In each leakage scanning cycle, the change in the liquid level of the surge tank is compared with the leakage threshold; When the number of leakage scanning cycles in which the change in the liquid level of the surge tank is greater than or equal to the leakage threshold value continuously reaches the leakage comparison number, it is determined that the leakage of the liquid level of the surge tank reaches the set value.

6. The leakage monitoring method of a data center CDU system according to claim 1, characterized in that: The method for acquiring the real-time monitoring leakage signal of the CDU system includes: A leakage locating rope is arranged at a fixed point, and the current change information of the leakage locating rope is collected as a real-time monitoring leakage signal; when the leakage locating rope contacts the liquid and causes the current change to reach the set threshold, the real-time monitoring leakage signal indicates that the CDU system has a leakage risk; otherwise, the real-time monitoring leakage signal indicates that the CDU system has no leakage risk.

7. A leakage monitoring system for a CDU system in a data center, characterized in that: include: The data acquisition module acquires the real-time monitoring leakage signal of the CDU system, the water replenishment data of the CDU system, the internal pressure data of the CDU system, and the liquid level change data of the pressure regulating tank in the CDU system through the acquisition device; A communication module, connected to the data acquisition module, for data transmission; The control module is connected to the communication module and uses the leakage monitoring method according to any one of claims 1 to 6 to monitor the leakage of the CDU system of the data center.

8. The leakage monitoring system of the data center CDU system according to claim 7, characterized in that: The data acquisition module comprises: The leakage sensor is connected to the leakage positioning rope to obtain the current signal of the leakage positioning rope and use it as a real-time monitoring leakage signal; Pressure sensors: at least two pressure sensors are respectively installed on the main pipeline of the CDU system and the outlet pipeline of the pressure regulating tank, and are used to measure the internal pressure data of the CDU system; A liquid level sensor is arranged in the pressure stabilizing tank and is used to monitor the liquid level in the pressure stabilizing tank; The switch detection unit is used to collect the switch status of the water supply pump, circulation pump and pressure stabilizing valve in the CDU system.

9. The leakage monitoring system of the data center CDU system according to claim 8, characterized in that: The control module comprises: A switch quantity input unit receives a collection signal from a switch quantity detection unit; Analog input unit, receiving the acquisition signal of the sensor; The data processing unit is used to obtain the water replenishment times of the CDU system according to the acquired switch quantity and analog quantity, calculate and compare the internal pressure data of the CDU system, and calculate and compare the liquid level change of the pressure regulating tank; The leakage judgment unit is connected to the data processing unit and outputs a final leakage judgment result according to the output data of the data processing unit.

10. The leakage monitoring system of the data center CDU system according to claim 8, characterized in that: Also includes: The human-computer interaction interface is used to display collected data, alarm display, leakage parameter setting, pressure trend parameter setting, water replenishment times and recording time setting.

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