Refrigeration device, data cabinet and control method thereof

Abstract

The embodiment of the present application provides a refrigeration device, which comprises a refrigeration device, a first pipe body, a second pipe body, a plurality of electromagnetic valves, a plurality of first sensors, a plurality of water leakage detection devices and a control device. The refrigeration device comprises a liquid outlet and a liquid inlet. The first pipe body is connected with the liquid outlet. The second pipe body is connected with the liquid inlet. A plurality of first branch pipes for connecting inlets of air conditioners and a plurality of second branch pipes for connecting outlets of air conditioners are arranged. The first branch pipe and the second branch pipe connected with the same air conditioner form a loop. The plurality of first branch pipes are connected with the first pipe body. The plurality of second branch pipes are connected with the second pipe body. The water leakage detection device is arranged in the loop one by one. The water leakage detection device can find the pipeline leakage in real time. The position of the water leakage is transmitted to the control device, so as to be used by the staff for later maintenance, and the safety use of the data cabinet is protected. In addition, the embodiment also provides a data cabinet and a control method.

Description

Technical Field

[0001] This application relates to the field of data center technology, specifically to a cooling device, a data cabinet, and a control method thereof. Background Technology

[0002] Data centers house a large number of operating devices, requiring strict control of temperature and humidity balance. Most data centers are equipped with air conditioning and other regulating devices to regulate internal temperature and humidity. Air conditioning utilizes the thermal expansion and contraction of a medium to achieve this, continuously circulating and cooling. The large number of air conditioners in a data center necessitates a large number of media transmission pipelines, which are densely distributed. This makes pipeline installation and layout difficult, and the control lines between pipelines are redundant. The complex structure can increase failure rates and severely impact the normal operation of the data center. Summary of the Invention

[0003] In a first aspect, embodiments of this application provide a refrigeration device, including a refrigerator, a first pipe body, a second pipe body, multiple solenoid valves, multiple first sensors, multiple leakage detection devices, and a control device. The refrigerator includes an outlet and an inlet. The first pipe body is connected to the outlet, and the second pipe body is connected to the inlet. Multiple first branch pipes for connecting to the inlet of an air conditioner and multiple second branch pipes for connecting to the outlet of an air conditioner are connected. The first and second branch pipes connected to the same air conditioner form a loop. The multiple first branch pipes are connected to the first pipe body, and the multiple second branch pipes are connected to the second pipe body. Each solenoid valve is correspondingly set in a loop and is used to control the on / off state of the loop. Each first sensor is correspondingly set in a loop and is used to collect the flow rate information of the medium flowing through the loop. Each leakage detection device is correspondingly set in a loop and is used to detect whether the loop is leaking. The control device is electrically connected to the solenoid valves and the first sensors.

[0004] In one embodiment, the refrigeration device further includes a housing, the housing including a base plate, the base plate including at least two regions, each region corresponding to at least one circuit, and each region being provided with a second sensor for detecting water accumulation information in the corresponding region.

[0005] In one embodiment, the leakage detection device includes a liquid absorption element, a first detection electrode, and a second detection electrode. The liquid absorption element is connected to a circuit, and the first and second detection electrodes are disposed on the liquid absorption element and spaced apart. When a medium adheres to the liquid absorption element, the first and second detection electrodes are connected.

[0006] In one embodiment, the liquid-absorbing element is a fiber rope.

[0007] In one embodiment, both the first pipe and the second pipe are provided with vent valves.

[0008] Secondly, embodiments of this application also provide a data cabinet, including a first sub-cabinet, a second sub-cabinet, and at least two cooling devices. Both the first and second sub-cabinets include at least two air conditioners. A portion of the circuits in each cooling device are connected to at least a portion of the air conditioners in the first sub-cabinet, and the remaining circuits are connected to at least a portion of the air conditioners in the second sub-cabinet. Each air conditioner is connected to one circuit.

[0009] In one implementation, at least two cooling units are configured such that at least one cooling unit cools a first sub-cabinet and at least one cooling unit cools a second sub-cabinet at the same time.

[0010] Thirdly, embodiments of this application also provide a control method for the aforementioned data cabinet, including acquiring information collected by a water leakage detection device, and issuing an alarm message when the water leakage detection device detects a water leakage in a circuit, the alarm message including the location of the circuit where the water leakage occurred.

[0011] The cooling device, data cabinet, and control method provided in this application utilize a leak detection device installed on the circuit to detect pipe leaks in real time. The location of the leak is transmitted to the control device for later maintenance by personnel, ensuring the safe operation of the data cabinet. The control device can promptly acquire leak and flow information and control the solenoid valve to close the corresponding circuit. This reduces the risk of damage caused by leaks and protects the normal operation of the data cabinet. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a data cabinet according to an embodiment of this application;

[0014] Figure 2 This is a schematic diagram of the structure of a refrigeration device proposed in an embodiment of this application;

[0015] Figure 3 This is a structural block diagram of a control device proposed in an embodiment of this application;

[0016] Figure 4 This is a structural block diagram of a water leakage detection device proposed in an embodiment of this application;

[0017] Figure 5 This is a schematic diagram of the method flow of a control method proposed in an embodiment of this application;

[0018] Figure 6 This is a schematic diagram of the method flow for another control method proposed in an embodiment of this application. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0020] In this application, unless otherwise expressly specified or limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components; they can refer to mere surface contact; or they can refer to surface contact connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] Furthermore, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as referring to specific or particular structures. The terms "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this application, the illustrative expressions 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 a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this application, as well as the features of different embodiments or examples.

[0022] Example

[0023] This application provides a data cabinet 1, please refer to... Figure 1 The data cabinet 1 includes a first sub-cabinet 10, a second sub-cabinet 20, and at least two cooling units 30. Both the first sub-cabinet 10 and the second sub-cabinet 20 include air conditioners 40, and the cooling units 30 are connected to the air conditioners 40.

[0024] Both the first sub-rack 10 and the second sub-rack 20 can house multiple devices. These devices generate heat during normal operation, which is dissipated into the internal environment using built-in fans or naturally. To ensure a suitable working environment, air conditioners 40 exhaust cool air, utilizing the heat exchange between the cool and warm air to guarantee normal device operation. To ensure that air conditioners 40 can provide the necessary cool air and to prevent malfunctions that would prevent them from providing cool air, both the first sub-rack 10 and the second sub-rack 20 include at least two air conditioners 40, ensuring that at least one air conditioner 40 is operational and providing cool air during device operation.

[0025] To meet the cooling air requirements of the first sub-rack 10 and the second sub-rack 20, each sub-rack 10 and the second sub-rack 20 includes at least two air conditioners 40. Each air conditioner 40 is connected to a refrigeration unit 30 to obtain circulated coolant after cooling. In one embodiment, a portion of the circuit in each refrigeration unit 30 is connected to at least a portion of the air conditioners 40 in the first sub-rack 10. This prevents a single refrigeration unit 30 from failing and unable to continue supplying refrigerant, causing the air conditioner 40 to shut down and all equipment in the first sub-rack 10 and the second sub-rack 20 to malfunction. A portion of the circuit in each refrigeration unit 30 is connected to at least a portion of the air conditioners 40 in the first sub-rack 10, and the remaining circuits are connected to at least a portion of the air conditioners 40 in the second sub-rack 20, with each air conditioner 40 connected to one circuit. Even if one refrigeration unit 30 fails and stops working, the remaining refrigeration units 30 still supply refrigerant, ensuring that both the first sub-rack 10 and the second sub-rack 20 can operate normally.

[0026] After absorbing heat, the coolant in air conditioner 40 heats up. The high-temperature coolant needs to be cooled down for subsequent cooling. Please refer to the following in this embodiment: Figure 1 as well as Figure 2The refrigeration device 30 is a device that lowers the coolant temperature of multiple air conditioners 40 and distributes it to the multiple air conditioners 40. The refrigeration device 30 includes a cooler 31, a first pipe body 32, and a second pipe body 33. The cooler 31 is a device that can lower the liquid temperature. The cooler 31 includes a liquid outlet 311 and a liquid inlet 312 for liquid entry and exit, respectively. The first pipe body 32 is connected to the liquid outlet 311, and the second pipe body 33 is connected to the liquid inlet 312. The high-temperature liquid in the second pipe body 33 enters the cooler 31 through the liquid inlet 312. The heat of the high-temperature liquid is absorbed by the cooler 31 and transformed into a low-temperature liquid, which then flows into the first pipe body 32 from the liquid outlet 311, realizing the transfer of liquid heat. Multiple first branch pipes 321 for connecting the inlets 41 of air conditioners 40 and second branch pipes 331 for connecting the outlets 42 of air conditioners 40 form a loop. The multiple first branch pipes 321 are connected to the first pipe body 32, and the multiple second branch pipes 331 are connected to the second pipe body 33. After absorbing heat from the data cabinet 1, the temperature of the coolant in the multiple air conditioners 40 rises. The coolant from the multiple air conditioners 40 enters the multiple first branch pipes 321 of the refrigeration unit 30 from the outlets 42 of the air conditioners 40 and converges in the first pipe body 32. After being cooled by the cooler 31, the low-temperature liquid is distributed from the second branch pipes 331 of the second pipe body 33 to the inlets 41 of the multiple air conditioners 40, realizing centralized cooling of the coolant in the multiple air conditioners 40, reducing the number of refrigeration units 30, avoiding redundant pipes that reduce the cooling effect, and completing the distribution of coolant to each air conditioner 40.

[0027] Please refer to the following when the refrigeration unit 30 is in operation: Figure 2 as well as Figure 3The different positional relationships between the multiple first branch pipes 321 and the first pipe body 32 can lead to differences in liquid pressure among the multiple first branch pipes 321, potentially causing uneven distribution of coolant in the circuit and resulting in variations in the cooling effect of the multiple air conditioners 40. Therefore, real-time acquisition of the operating status of the refrigeration unit 30 and control of the refrigeration unit 30 have a certain impact on the operational reliability of the data cabinet 1. The refrigeration unit 30 also includes multiple solenoid valves 61, multiple first sensors 62, multiple leakage detection devices 63, and a control device 64. Each solenoid valve 61 is configured in a corresponding circuit and is used to control the on / off state of the circuit. The on / off state of the circuit can be further changed by altering the circuit connection state at both ends of the solenoid valve 61. By adjusting the on / off state of multiple circuits, differences in coolant flow and other parameters among the multiple circuits can be reduced. Preferably, the energized and de-energized states of the solenoid valve 61 correspond to the conduction and disconnection in the circuit, respectively. This ensures that the solenoid valve 61 is closed in the event of a power outage, preventing the air conditioner 40 from stopping operation while the coolant inside the refrigeration unit 30 continues to circulate, thus avoiding coolant waste. Each first sensor 62 is configured in a corresponding loop and is used to collect the flow rate information of the medium flowing through the loop. The first sensor 62 may include a flow velocity sensor, a temperature sensor, and a pressure sensor, etc. Correspondingly, the flow rate information that can be collected includes parameters such as cooling capacity, cooling load, water flow rate, water temperature, and water pressure. Among them, the cooling capacity can be calculated using information such as the temperature difference and water flow rate at both ends of the loop, and according to a certain rule; the cooling load can be calculated based on information such as the actual load power of the corresponding loop. Furthermore, the cooling load can be combined with the cooling capacity of the corresponding loop and the total load power of the cooling device 30 to obtain the cooling efficiency of the corresponding loop and the power consumption distribution among multiple loops. Preferably, the first sensor 62 can also be respectively configured on the first pipe body 32, the second pipe body 33, multiple first branch pipes 321, and multiple second branch pipes 331, so as to obtain detailed medium information at different locations in the same loop, avoid the limitation of medium information acquisition, and protect the normal operation of the cooling device 30.

[0028] In one embodiment, a display screen may be installed on the circuit of the data cabinet 1 or on other devices. The display screen can be electrically connected to the first sensor 62 and the water leakage detection device 63. The display screen can be used to display parameters such as cooling capacity, cooling load, water flow rate, water temperature, water leakage information and water pressure of the corresponding circuit for use by staff in maintenance and other situations.

[0029] The flow information collected by the first sensor 62 is used for maintenance and testing by staff to further ensure the normal operation of the refrigeration unit 30. The control device 64 is electrically connected to the solenoid valve 61 and the first sensor 62. Under pre-programmed settings or staff control, the control device 64 can change the circuit connection state at both ends of the solenoid valve 61 and obtain the flow information of the medium in the loop. Preferably, when the control device 64 disconnects a loop, the air conditioner 40 connected to that loop may still be running, seriously affecting the service life of the air conditioner 40. The control device 64 is used to synchronously control multiple air conditioners 40 in the same loop. The control device 64 can be electrically connected to the air conditioners 40, and when a loop is closed, the corresponding air conditioner 40 in that loop will also be shut down, ensuring the normal operation of the air conditioner 40. Furthermore, when the data cabinet 1 stops working, the air conditioners 40 in the data cabinet 1 will also be shut down accordingly. To avoid wasting resources, the first sub-cabinet 10 or the second sub-cabinet 20 controls the opening and closing of the connected refrigeration unit 30. This saves resources and protects the normal operation of the air conditioners 40 and the refrigeration unit 30.

[0030] The control device 64 may include one or more (only one is shown in the figure) processors 641 and memory 642 coupled to each other. See also Figure 3 Let's take control device 64 as an example for introduction:

[0031] The processor 641 may include one or more processing cores. The processor 641 connects to various parts within the entire cooling device 30 using various interfaces and lines, and performs various functions and processes data in the data cabinet 1 by running or executing instructions, programs, code sets, or instruction sets stored in the memory 642, and by calling data stored in the memory 642. Optionally, the processor 641 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 641 may integrate one or more of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the displayed content; and the modem handles wireless communication. It is understandable that the aforementioned modem may not be integrated into the processor 641, but may be implemented using a separate communication chip.

[0032] The memory 642 may include random access memory (RAM) or read-only memory (ROM). The memory 642 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 642 may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as touch functionality, sound playback functionality, image playback functionality, etc.), and instructions for implementing the various method embodiments described below. The data storage area may also store data created by the control device 64 during use (such as phonebook data, audio / video data, chat log data, etc.).

[0033] Each leakage detection device 63 is installed in a corresponding loop and is used to detect whether the loop is leaking. For details, please refer to... Figure 4 The leakage detection device 63 includes a liquid-absorbing element 631, a first detection electrode 632, and a second detection electrode 633. The liquid-absorbing element 631 is connected to a circuit. The first detection electrode 632 and the second detection electrode 633 are disposed on the liquid-absorbing element 631 and spaced apart. When a medium adheres to the liquid-absorbing element 631, the first detection electrode 632 and the second detection electrode 633 conduct to form a circuit, and the circuit current is as follows: Figure 4 As shown by the dotted line, the first detection electrode 632 and the second detection electrode 633 form a short circuit at the point of medium adhesion, detecting the current and voltage values ​​in the circuit. The resistance value is calculated using Ohm's law for the same circuit. By comparing the resistance value with the resistance value at a fixed distance between the first and second detection electrodes 632 and 633, the specific distance at the point of medium adhesion is obtained, further determining the leak location and realizing the function of the leak detection device 63 in accurately detecting the leak location. Furthermore, the control device 64 can also be electrically connected to the leak detection device 63. After acquiring leak information, the control device 64 controls the solenoid valve 61 to open and close the circuit, reducing coolant waste. Preferably, in subsequent leak repairs, to allow workers to clearly determine the leak location on-site, the suction element 631 is a fiber rope. The fiber rope has a certain wetting property for liquids; leaked liquid will wet the fiber rope and leave water stains, allowing workers to clearly determine the leak location and reducing on-site repair steps.

[0034] In this embodiment, please continue to refer to Figure 2 as well as Figure 3The refrigeration unit 30 also includes a housing 70, which isolates the refrigeration unit 30 from the internal and external environments. To prevent the accumulation of static electricity generated during internal equipment operation, which could damage components, the housing 70 is typically made of metal. Since liquid circulation is involved inside the housing 70, it can be made of stainless steel. The housing 70 includes a base plate 71, which supports the internal equipment of the refrigeration unit 30. Compared to the internal environment, the coolant temperature inside the pipes is lower, and water vapor inside will condense on the outer wall of the pipes, causing a pipe leak warning. To reduce the number of false alarms, the base plate 71 includes at least two areas 711, each area 711 corresponding to at least one loop. Each area 711 is equipped with a second sensor 7111, which detects water accumulation information within the corresponding area 711. By combining the loop leak warning and the water accumulation information in the corresponding area 711, the authenticity of the leak is comprehensively judged, increasing the leak detection criteria and reducing the incidence of false alarms. Preferably, both the second sensor 7111 and the leak detection device 63 function to detect leaks in their respective areas 711. The second sensor 7111 can also be configured as the leak detection device 63. The second sensor 7111 is installed on the base plate 71, increasing the versatility between components, reducing the number of components with the same function, and alleviating the workload of workers. In one embodiment, the second sensor 7111 can be a leak detection device with precise leak location capabilities. Only one leak detection device needs to be installed on the base plate 71, and its leak location capability determines the area 711 where water is accumulated, reducing the number of connecting wires between the second sensor 7111 and other devices. In another embodiment, there can be multiple second sensors 7111 in each area 711 of the base plate 71, and these multiple second sensors 7111 are independently connected to the control device 64. This avoids a malfunction in one location of the second sensor 7111 causing multiple areas 711 to malfunction.

[0035] In this embodiment, both the first pipe 32 and the second pipe 33 are connected to multiple air conditioners 40. Air may enter at the connection point or seep in from near the pipe. Air circulates along with the coolant, and the compressibility of air alters the load on the pressure pump, potentially damaging it. Furthermore, air has a lower specific heat capacity, resulting in less cooling capacity and reduced cooling efficiency of the air conditioner 40. Both the first pipe 32 and the second pipe 33 are equipped with vent valves to release excess air from the circuit, allowing the coolant to fill the entire circuit and improving the cooling efficiency of the air conditioner 40. Preferably, utilizing the buoyancy of the liquid on the air, air will accumulate at the higher part of the first pipe 32 or the second pipe 33. The vent valve is positioned at the highest point of the first pipe 32 or the second pipe 33 to facilitate air release.

[0036] In this embodiment, please refer to Figure 5 Furthermore, a control method for a data cabinet is provided, which can be applied to the aforementioned data cabinet 1.

[0037] Step S110: Obtain information collected by the leak detection device. When the leak detection device detects a leak in the circuit, it issues an alarm message, which includes the location of the circuit where the leak occurred.

[0038] First, the leak detection device collects information including the voltage and current values ​​between the first and second detection electrodes. Furthermore, the refrigeration device is pre-set with corresponding voltage and current values, as well as the unit length resistance values ​​of the first and second detection electrodes.

[0039] When a leak occurs in the circuit, the first and second detection electrodes short-circuit at the point of contact with the medium, forming a current loop. The current and voltage values ​​in this loop will change significantly, and this information will be acquired by the leak detection device. The leak detection device will calculate the resistance value using Ohm's law for the same loop in a closed circuit. By comparing this resistance value with the resistance values ​​of the unit lengths of the first and second detection electrodes, the distance between the point of contact with the medium and the end of the leak detection device's electrodes can be determined. A wired or wireless connection is established between the leak detection device and the control device. Wireless connections include, but are not limited to, Bluetooth and Zigbee connections. Therefore, the leak detection device can transmit alarm information to the control device via this connection. Specifically, the alarm information includes the leak circuit, leak location, leak time, and leak range. The leak detection device converts this information into electrical or Bluetooth signals and continuously transmits them to the control device. When the leak detection device cannot detect a leak, it will disconnect the alarm information transmission.

[0040] For example, a leak in the circuit creates a current loop with a current value of 1A and a voltage value of 2V. The resistance of the first and second detection electrodes per meter is 1Ω. Using Ohm's law for closed circuits, and neglecting the influence of other components in the leak detection device on the resistance, the total resistance of the current loop is 2Ω. Comparing the total resistance with the resistance of each unit length, the total length of the current loop is 2m. The distance from the point of contact with the medium to the end of the leak detection device electrode is half the total length. Finally, the distance from the point of contact with the medium to the end of the leak detection device electrode is 1m. This distance information is then sent to the control device or other equipment.

[0041] In data cabinets, complex piping designs pose a risk of leaks, leading to numerous challenges in leak detection and repair. By installing leak detection devices on the loops, leaks can be detected in real time. The location of the leak is then transmitted to the control unit for later maintenance by staff. This protects the equipment in the data cabinet and reduces the workload for maintenance personnel.

[0042] This application also provides another control method, please refer to [link / reference]. Figure 6 It should be understood that the control method in this embodiment has the same or corresponding implementation steps as the above embodiments. For a detailed description of these same or corresponding implementation steps, please refer to the content provided in the foregoing embodiments. This embodiment will not repeat them.

[0043] Step S210: Obtain information collected by the leak detection device. When the leak detection device detects a leak in the circuit, it issues an alarm message, which includes the location of the circuit where the leak occurred.

[0044] Step S220: When the alarm trigger duration is equal to the preset duration, obtain the water accumulation information of each area on the bottom plate of the casing.

[0045] First, to avoid false alarms from the leak detection device due to liquid splashing or humid ambient air, a preset time is set on the refrigeration unit. This preset time starts counting from the moment the leak detection device alarms. To ensure equipment safety and minimize coolant loss, the preset time should not be set too long. For example, the preset time can be set to 5 minutes.

[0046] In one embodiment, multiple second sensors are distributed across various areas of the base plate, with each second sensor capable of detecting water accumulation information in its corresponding area. When the alarm trigger duration equals a preset duration, the control device can acquire water accumulation information for the corresponding area from the multiple second sensors. The water accumulation information includes relevant information such as water location and volume.

[0047] In another embodiment, each area of ​​the base plate is equipped with a leak detection device. This device can identify the location of the leak and determine the area where it is located. For example, the base plate includes a first area and a second area. The total length of the leak detection device is 2m. Devices with a length between 0-1m are located in the first area, and devices with a length between 1m-2m are located in the second area. The position parameters of the leak detection device can be calculated from either end. If a leak is detected at 0.5m from the leak detection device (0.5m falls within the 0-1m length range), it can be determined that the leak is in the first area.

[0048] Step S230: When the water accumulation in the area corresponding to the leaking loop exceeds the water accumulation threshold, the flow rate of the loop is detected.

[0049] First, the control device has a preset water accumulation threshold, which includes information such as water volume and location. Regarding the water volume detection, the control device can obtain the water volume based on the water area or height detected by the second sensor on the base plate. If the water volume in a corresponding area exceeds the preset threshold, the flow rate of the loop is detected using the first sensor; if the water volume in a corresponding area does not exceed the preset threshold, no loop flow rate is detected.

[0050] Regarding the detection of water accumulation locations, the control device has a pre-set correspondence between various pipes and areas. Specifically, multiple second sensors are installed in each area of ​​the base plate. The control device has a pre-set correspondence between each leak detection device for each pipe and each second sensor, further determining the correspondence between each pipe and each area. The water accumulation threshold can be the area location corresponding to the leaking pipe in the alarm information. The area information corresponding to the leaking pipe is calculated by comparing the water accumulation information transmitted by the second sensor with the alarm information. If the two locations are consistent, the leak in the pipe can be confirmed, and the flow rate of the loop is detected using the first sensor; if the two locations are inconsistent, the leak in the pipe cannot be confirmed, and the loop flow rate is not detected. By utilizing the correspondence between areas and pipes, leakage can be accurately determined, reducing the occurrence of false alarms.

[0051] Step S240: If the flow rate of the flow circuit is less than 1 / 2 of the set flow rate and the number of closed circuits is less than 2, close the leaking circuit; if the flow rate of the flow circuit is less than 1 / 2 of the set flow rate and the number of closed circuits is more than 2, continuously issue alarm information.

[0052] First, preset flow parameters are set on the control device. The preset flow includes information such as the temperature difference between the two ends of the flow loop and the on / off state of the loop. The temperature difference between the two ends of the flow loop can be the temperature difference between the media in the first branch pipe and the second branch pipe. The current flow information of the flow loop is transmitted to the control device via a first sensor. This flow information includes the temperature difference of the flow loop, the flow velocity, and the on / off state of the loop.

[0053] Then, the flow rate information is compared with the preset flow rate, and the leakage circuit is controlled based on the comparison result. In one embodiment, the flow rate information can be the cooling capacity of the corresponding circuit. The comparison can be further achieved by comparing the preset circuit cooling capacity with the current circuit cooling capacity, and by comparing the preset circuit temperature difference with the current circuit temperature difference. When the circuit temperature difference is less than half of the set temperature difference and the number of closed circuits is less than two, the corresponding leakage circuit is closed via the solenoid valve of the flow circuit. When the circuit temperature difference is less than half of the set temperature difference and the number of closed circuits is more than two, only an alarm message is continuously issued, and the corresponding leakage circuit is not closed. When the circuit temperature difference is greater than half of the set temperature difference, regardless of whether the number of closed circuits is more than two, an alarm message is continuously issued, and the corresponding leakage circuit is not closed. Preferably, when closing the leakage circuit, the control device simultaneously controls the corresponding air conditioner to shut down. This reduces the occurrence of air conditioner idling, saves resources, and protects the service life of the air conditioner.

[0054] In another implementation, the flow information can be the water flow rate on the corresponding loop. By comparing the preset loop water flow rate with the current loop water flow rate, when the loop water flow rate is less than half of the set water flow rate and the number of closed loops is less than 2, the corresponding leaking loop is closed by the solenoid valve of the flow loop. When the loop water flow rate is less than half of the set water flow rate and the number of closed loops is more than 2, only an alarm message is continuously issued and the corresponding leaking loop is not closed. When the loop water flow rate is greater than half of the set water flow rate, regardless of whether the number of closed loops is more than 2, an alarm message is continuously issued and the corresponding leaking loop is not closed.

[0055] Setting alarm duration ensures alarm authenticity and avoids false alarms caused by damp circuits. Furthermore, the time required for alarm response and maintenance, during which the data cabinet may be operating normally or undergoing maintenance, prevents timely access for inspection. However, leakage may continue, potentially causing damage. The control device can promptly acquire leakage and flow information and control the solenoid valve to shut down the corresponding circuit. This reduces the risk of damage from leakage and protects the normal operation of the data cabinet.

[0056] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A control method for a data cabinet, characterized in that, The data cabinet includes: A first sub-rack and a second sub-rack, each including at least two air conditioners; and At least two refrigeration units, a portion of the circuits in each refrigeration unit are connected to at least a portion of the air conditioners in the first sub-cabinet, and the remaining circuits are connected to at least a portion of the air conditioners in the second sub-cabinet, with each air conditioner connected to one of the circuits; The refrigeration device includes: A refrigeration unit, comprising a liquid outlet and a liquid inlet; A first tube body, the first tube body being connected to the liquid outlet; The second tube is connected to the liquid inlet; Multiple first branch pipes for connecting the inlet of the air conditioner and multiple second branch pipes for connecting the outlet of the air conditioner, the first branch pipes and the second branch pipes connecting the same air conditioner form a loop, the multiple first branch pipes are connected to the first pipe body, and the multiple second branch pipes are connected to the second pipe body. Multiple solenoid valves are provided, each of which is configured in a corresponding circuit and is used to control the on / off state of the circuit. Multiple first sensors are provided, each of which is configured in a corresponding loop and is used to collect flow information of the medium flowing through the loop; Multiple leakage detection devices are provided, each corresponding to one of the loops, and are used to detect whether the loop is leaking; and A control device, wherein the control device is electrically connected to the solenoid valve and the first sensor; The control method includes: The system acquires information collected by the leak detection device. When the leak detection device detects a leak in the circuit, it issues an alarm message, which includes the location of the circuit where the leak occurred. When the alarm message trigger duration is equal to the preset duration, water accumulation information for each area on the bottom plate of the casing is obtained; When the water accumulation in the area corresponding to the leaking loop exceeds a water accumulation threshold, the flow rate of the loop is detected. If the flow rate of the circuit is less than 1 / 2 of the set flow rate, and the number of circuits that are closed is less than 2, then the circuit that is leaking water is closed.

2. The control method according to claim 1, characterized in that, The at least two cooling devices are configured such that, at the same time, at least one of the cooling devices cools the first sub-cabinet and at least one of the cooling devices cools the second sub-cabinet.

3. The control method according to claim 1, characterized in that, If the flow rate of the flow loop is less than 1 / 2 of the set flow rate, and more than 2 of the loops are closed, an alarm message will be continuously issued.

4. The control method according to claim 1, characterized in that, The refrigeration device further includes a housing, the housing includes a base plate, the base plate includes at least two regions, each region corresponds to at least one of the circuits, and each region is provided with a second sensor, the second sensor being used to detect water accumulation information in the corresponding region.

5. The control method according to claim 1, characterized in that, The leakage detection device includes a liquid absorption element, a first detection electrode, and a second detection electrode. The liquid absorption element is connected to the circuit. The first detection electrode and the second detection electrode are disposed on the liquid absorption element and spaced apart. When the medium adheres to the liquid absorption element, the first detection electrode and the second detection electrode are connected.

6. The control method according to claim 5, characterized in that, The liquid-absorbing component is a fiber rope.

7. The control method according to claim 1, characterized in that, Both the first pipe and the second pipe are equipped with vent valves.

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