A CDU tester

Abstract

The utility model belongs to CDU test technical field discloses a CDU testing machine. CDU testing machine includes storage unit, conveying main pipeline, conveying branch pipeline, backflow pipeline and load simulation subassembly. The utility model's CDU testing machine can be adapted to the interface of different models CDU through the butt joint of each conveying branch pipeline export, when needing to test different models CDU, need not to carry out the modification to CDU testing machine, need only to select the conveying branch pipeline with the adaptive butt joint and the CDU to be tested to connect, need not to customize CDU testing machine for new model CDU, thereby realized the general adaptation of different models CDU, solved the poor adaptability of existing testing machine problem. In addition, by adjusting the quantity of opened load unit, the total heat output of circulating medium can be flexibly adjusted, thereby adapting different heat demand test working condition of different models CDU, and then reducing time cost and economic cost.

Description

Technical Field

[0001] This utility model relates to the field of CDU testing technology, and in particular to a CDU testing machine. Background Technology

[0002] With the rapid development of high-density computing technology in data centers, the heat generated during server operation has increased significantly. Liquid cooling systems, due to their higher heat dissipation efficiency, have gradually become the core solution for data center thermal management. As a key component of liquid cooling systems, the flow rate and head characteristics, heat exchange performance, pressure resistance stability, and electrical control system reliability of the liquid cooling system directly determine its heat dissipation effect and operational safety. Therefore, it is necessary to conduct comprehensive performance testing of CDUs before they leave the factory and during the operation and maintenance phase using a professional CDU testing machine.

[0003] Existing CDU testing machines provide a stable circulating medium supply loop for the CDU, connect an external load to simulate different thermal demand conditions during actual CDU operation, and use adjustment components to precisely control key parameters such as temperature and pressure of the circulating medium to ensure that the supplied medium meets preset test standards, thereby achieving CDU performance testing.

[0004] However, most existing CDU testing machines are customized for the parameter requirements of specific CDU models and lack universal compatibility. When it is necessary to test different models and performance specifications of CDUs in the future, existing CDU testing machines cannot be used directly and must be modified or customized, which significantly increases time and economic costs.

[0005] Therefore, the above problems urgently need to be solved. Utility Model Content

[0006] The purpose of this invention is to provide a CDU testing machine to achieve universal compatibility with different CDU models, thereby reducing time and economic costs.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A CDU testing machine includes a storage unit, a main delivery pipeline, branch delivery pipelines, a return pipeline, and a load simulation component, wherein:

[0009] The storage unit is used to store circulating media;

[0010] The main transmission pipeline includes multiple parallel transmission branch pipelines and a junction pipeline. The inlet of each transmission branch pipeline is connected to the outlet of the storage unit, and the outlet of each transmission branch pipeline is connected to the inlet of the junction pipeline.

[0011] Multiple delivery sub-pipes are arranged in parallel, and the inlet of each delivery sub-pipe is connected to the outlet of the manifold. The outlet of each delivery sub-pipe is provided with a docking part that can be adapted to different CDU interfaces.

[0012] The outlet of the CDU to be tested is connected to the inlet of the storage unit through the return pipeline;

[0013] The load simulation component includes multiple load units, each load unit being disposed one-to-one on each of the conveying branch pipes. Each load unit can be individually turned on and off to control the on / off state of the corresponding conveying branch pipe, and each load unit can heat the circulating medium flowing in the corresponding conveying branch pipe, so as to adjust the total heat output of the circulating medium by turning on different numbers of the load units.

[0014] Preferably, the CDU testing machine further includes a buffer unit, the outlet of each of the delivery branch pipes is connected to the inlet of the buffer unit, and the outlet of the buffer unit is connected to the inlet of the manifold.

[0015] Preferably, the CDU testing machine further includes a balancing pipeline connecting the storage unit and the buffer unit, so as to conduct when the pressure difference of the circulating medium in the storage unit and the buffer unit exceeds a preset range.

[0016] Preferably, the load simulation component further includes a first heating element and a second heating element, wherein:

[0017] The first heating component is disposed corresponding to the storage unit and is used to heat the circulating medium within the storage unit;

[0018] The second heating component is provided corresponding to the buffer unit and is used to heat the circulating medium within the buffer unit;

[0019] Both the first heating element and the second heating element can be turned on and off independently.

[0020] Preferably, the storage unit includes a tank, a safety valve, and an exhaust valve, wherein:

[0021] The tank is used to store circulating media;

[0022] The safety valve is located at the top of the tank and communicates with the inner cavity of the tank.

[0023] The exhaust valve is located at the top of the tank and communicates with the inner cavity of the tank.

[0024] Preferably, the CDU tester further includes a parameter adjustment component, which is used to monitor the temperature of the circulating medium and feed the temperature monitoring data back to the load simulation component.

[0025] Preferably, the parameter adjustment component includes at least one temperature sensor disposed on each of the conveying branch pipes and / or each of the conveying sub-pipes, and the temperature sensor is configured to detect the temperature of the circulating medium in its corresponding pipe.

[0026] Preferably, the parameter adjustment assembly further includes at least one pressure regulator, which is disposed on each of the delivery branch pipes and / or each of the delivery sub-pipes, and is configured to adjust the pressure of the circulating medium in its corresponding pipe.

[0027] Preferably, the pressure regulating component includes a pressure sensor and a regulating valve.

[0028] Preferably, each of the conveying sub-pipes is detachably equipped with a sealing element, and each sealing element is configured to seal the corresponding conveying sub-pipe when it is not connected to the CDU interface.

[0029] The beneficial effects of this utility model are:

[0030] The CDU testing machine of this utility model can be adapted to the interfaces of different CDU models through the docking parts of each conveying branch outlet. When different CDU models need to be tested, there is no need to modify the CDU testing machine. It is only necessary to select a conveying branch with an adapted docking part and connect it to the CDU to be tested. There is no need to customize a new CDU testing machine for new CDU models, thus realizing universal compatibility with different CDU models and solving the problem of poor compatibility of existing testing machines.

[0031] Furthermore, since each load unit is set on a corresponding branch pipeline and can be independently controlled to open and close, the total heat output of the circulating medium can be flexibly adjusted by adjusting the number of load units that are open, thereby adapting to the different heat demand test conditions of different CDU models. There is no need to disassemble, modify or re-customize the CDU test machine, which reduces the adjustment time of the test machine and avoids the additional economic costs incurred by customizing the CDU test machine, thereby reducing time and economic costs. Attached Figure Description

[0032] Figure 1 This is a system schematic diagram of the CDU testing machine provided by this utility model;

[0033] Figure 2 This is a schematic diagram of the storage unit provided by this utility model;

[0034] Figure 3This is a schematic diagram of each conveying branch pipeline, each load unit, and the balancing pipeline provided by this utility model;

[0035] Figure 4 This is a schematic diagram of the delivery pipeline and parameter adjustment assembly provided by this utility model.

[0036] In the picture:

[0037] 1. Storage unit; 11. Tank body; 12. Safety valve; 13. Exhaust valve;

[0038] 2. Main conveying pipeline; 21. Branch conveying pipeline; 22. Combination pipeline;

[0039] 3. Delivery pipeline; 31. Connecting section;

[0040] 4. Return piping;

[0041] 5. Load simulation component; 51. Load unit; 52. First heating component;

[0042] 6. Buffer unit;

[0043] 7. Balance piping;

[0044] 8. Parameter adjustment component; 81. Temperature sensor; 82. Pressure adjustment component; 821. Pressure sensor; 822. Control valve. Detailed Implementation

[0045] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0046] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0047] In this application, the term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent: the existence of only one centrifugal vortex magnetic pump, the simultaneous existence of one centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump, or the existence of only one centrifugal vortex magnetic pump. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0048] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0049] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0050] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0051] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0052] Please see Figures 1 to 4This embodiment provides a CDU testing machine, which includes a storage unit 1, a main delivery pipeline 2, branch delivery pipelines 3, a return pipeline 4, and a load simulation component 5. The storage unit 1 stores circulating media. The main delivery pipeline 2 includes multiple parallel-connected branch delivery pipelines 21 and a manifold 22. The inlet of each branch delivery pipeline 21 is connected to the outlet of the storage unit 1, and the outlet of each branch delivery pipeline 21 is connected to the inlet of the manifold 22. Multiple branch delivery pipelines 3 are arranged in parallel, and the inlet of each branch delivery pipeline 3 is connected to the outlet of the manifold 22. The outlet of each branch delivery pipeline 3 is provided with a docking part 31 that can adapt to different CDU interfaces. The outlet of the CDU under test is connected to the inlet of the storage unit 1 through the return pipeline 4. The load simulation component 5 includes multiple load units 51, each load unit 51 is disposed on each delivery branch pipe 21 in a corresponding manner, each load unit 51 can be turned on and off individually to control the on / off of the corresponding delivery branch pipe 21, and each load unit 51 can heat the circulating medium flowing in the corresponding delivery branch pipe 21, so as to adjust the total heat output of the circulating medium by turning on different numbers of load units 51.

[0053] During testing, the storage unit 1 first provides the circulating medium required for the test. The circulating medium enters each of the branch pipes 21 of the main conveying pipeline 2, and then flows into the manifold 22. Since multiple branch pipes 3 are arranged in parallel and the inlet of each branch pipe 3 is connected to the outlet of the manifold 22, the circulating medium in the manifold 22 can be distributed to each branch pipe 3. Each branch pipe 3 outlet is equipped with a docking part 31 that can adapt to different CDU interfaces. The CDU to be tested is connected to the corresponding branch pipe 3 through the docking part 31 to receive the circulating medium. After heat exchange, the circulating medium flows through the return pipe. Path 4 flows back from the outlet of the CDU under test to the storage unit 1, forming a complete medium circulation. At the same time, multiple load units 51 of the load simulation component 5 are set one-to-one on each delivery branch 21, and each load unit 51 can be turned on and off independently. When testing CDUs of different models and performance specifications, the total heat output of the circulating medium can be adjusted by controlling the opening and closing state of each load unit 51 according to the actual heat demand conditions of the CDU under test. This makes the thermal state of the circulating medium meet the preset test standards of the CDU under test, thereby simulating different heat demand scenarios in the actual operation of the CDU and realizing accurate testing of CDU performance.

[0054] With this configuration, the interface of different CDU models can be adapted through the docking part 31 at the outlet of each conveying branch pipe 3. When different models of CDU need to be tested, there is no need to modify the CDU testing machine. It is only necessary to select the conveying branch pipe 3 with the matching docking part 31 and connect it to the CDU to be tested. There is no need to customize a new CDU testing machine for the new model of CDU, thus realizing universal adaptation to different models of CDU and solving the problem of poor compatibility of existing testing machines.

[0055] Furthermore, since each load unit 51 is installed on each delivery branch pipe 21 and can be independently controlled to open and close, the total heat output of the circulating medium can be flexibly adjusted by adjusting the number of load units 51 that are opened, thereby adapting to the different heat demand test conditions of different CDU models. There is no need to disassemble, modify or re-customize the CDU test machine, which reduces the adjustment time of the test machine and avoids the additional economic costs caused by customizing the CDU test machine, thereby reducing time and economic costs.

[0056] It should be noted that the load unit 51 can be implemented using various heating structures available in the prior art, such as electric heating load modules, load modules with external air source heat sources, and heat pump load modules. It should also be noted that each docking part 31 can adopt a snap-fit ​​structure, specifically configured with common specifications such as 1 / 2-inch snap-fit ​​interfaces, 3 / 4-inch snap-fit ​​interfaces, and 1-inch snap-fit ​​interfaces, to precisely match the interface sizes of different CDU models.

[0057] It is worth noting that each delivery branch pipe 3 is detachably equipped with a sealing component (not shown in the figure). Each sealing component is configured to seal the corresponding delivery branch pipe 3 when it is not connected to the CDU interface. The detachable sealing component on each delivery branch pipe 3 effectively prevents leakage of the circulating medium from the outlet, avoiding medium waste and pollution of the surrounding environment of the testing machine. It also prevents dust and impurities from entering the unused delivery branch pipe 3, preventing impurities from affecting the testing accuracy of the CDU under test or damaging its internal components. Furthermore, the detachable design of the sealing component allows for quick removal when connecting to the CDU interface without affecting normal connection operations. It also protects the interface of the unused delivery branch pipe 3 from damage caused by impacts, extending its service life. It also accommodates scenarios where multiple delivery branch pipes 3 are not used simultaneously, ensuring that unused pipelines do not interfere with the operation of the overall testing system. In addition, each sealing component is designed corresponding to its respective docking part 31, which will not be described in detail here.

[0058] Specifically, the CDU testing machine also includes a buffer unit 6. The outlets of each delivery branch pipe 21 are connected to the inlet of the buffer unit 6, and the outlet of the buffer unit 6 is connected to the inlet of the manifold 22. Therefore, the outlets of each delivery branch pipe 21 of the main delivery pipeline 2 are connected to the inlet of the buffer unit 6, and the outlet of the buffer unit 6 is connected to the inlet of the manifold 22. This ensures that the circulating medium, after being regulated by the load unit 51 on each delivery branch pipe 21, first enters the buffer unit 6. The buffer unit 6 can regulate the flow rate or pressure of the circulating medium, preventing drastic fluctuations in the flow rate and pressure. This ensures that the parameters of the circulating medium subsequently delivered to each delivery branch pipe 3 via the manifold 22 remain stable and meet the preset test standards of the CDU under test. This provides a stable medium supply basis for CDU performance testing and avoids data distortion due to fluctuations in medium parameters.

[0059] In addition, when the load unit 51 is working, it releases heat to the circulating medium. The untreated heated circulating medium may have local temperature deviations due to different contact positions with the load unit 51. When the circulating medium heated by the load unit 51 flows through the buffer unit 6, the medium inside the buffer unit 6 can achieve temperature homogenization through natural mixing, eliminating local high or low temperature areas. When the circulating medium with uniform temperature is then transported to the CDU under test, its temperature state can better match the actual heat demand conditions of the CDU under test, thereby reducing the test error of CDU heat exchange performance caused by local temperature deviation of the medium and improving the accuracy of CDU thermal management related parameter testing.

[0060] To further enhance the pressure coordination between storage unit 1 and buffer unit 6 and prevent pressure imbalance from affecting the operation of the CDU tester, the CDU tester also includes a balancing pipeline 7 connecting storage unit 1 and buffer unit 6. This pipeline is activated when the pressure difference between the circulating media in storage unit 1 and buffer unit 6 exceeds a preset range. The balancing pipeline 7 activates when the pressure difference between storage unit 1 and buffer unit 6 exceeds the preset range, quickly achieving pressure balance between the two units. This ensures a continuous and stable flow of media from storage unit 1 to buffer unit 6, preventing interruptions in media circulation due to pressure imbalance and guaranteeing continuous CDU performance testing.

[0061] In this embodiment, the balancing pipeline 7 includes a pipeline body and an electric ball valve. One end of the pipeline body is connected to the storage unit 1, and the other end is connected to the buffer unit 6, forming a medium flow channel between the two units. The electric ball valve is fixed on the pipeline body and serves as a component for controlling the opening or closing of the balancing pipeline 7. When the CDU testing machine is running, the electric ball valve can receive the pressure difference signal between the storage unit 1 and the buffer unit 6 monitored by the system. When the pressure difference between the two units does not exceed the preset range, it remains closed to avoid interfering with the normal medium circulation. When the pressure difference exceeds the preset range, it receives a trigger signal to open, allowing the pipeline body to conduct and achieving pressure balance regulation of the circulating medium in the two units.

[0062] To further improve the accuracy and flexibility of circulating medium temperature regulation, the load simulation component 5 also includes a first heating element 52 and a second heating element. The first heating element 52 is configured corresponding to the storage unit 1 and is used to heat the circulating medium within the storage unit 1. The second heating element is configured corresponding to the buffer unit 6 and is used to heat the circulating medium within the buffer unit 6. Both the first heating element 52 and the second heating element can be turned on and off independently.

[0063] It is understandable that storage unit 1 is the source of the circulating medium, and its temperature directly affects the initial medium temperature of the entire circulating system. The first heating component 52 is set for storage unit 1 and can specifically adjust the base temperature of the source medium. In addition, buffer unit 6, as a key node for distributing the medium to each delivery branch 3, needs its medium temperature to ultimately match the preset temperature standard of the CDU under test. The second heating component is set for buffer unit 6 and can perform secondary temperature fine-tuning on the buffered and homogenized medium. Since both can be turned on and off independently, during testing, the circulating medium in storage unit 1 can be heated to a base temperature close to the target range by the first heating component 52, and then the medium in buffer unit 6 can be precisely corrected by the second heating component. This achieves graded temperature control from the source to the distribution node, making the temperature of the medium finally delivered to the CDU under test more closely match its actual operating thermal requirements, reducing the temperature deviation that may be caused by a single heating method, and improving the accuracy of the test condition simulation.

[0064] It is also understandable that the performance testing of different CDU models may require the circulating medium to be in different temperature ranges. The first heating element 52 and the second heating element can be turned on and off independently. By operating them in combination, such as turning on only the first heating element 52, turning on only the second heating element, or turning on both at the same time, a wider temperature adjustment range can be formed, covering the temperature testing needs of more CDU models. This further enhances the universal adaptability of the CDU testing machine to different CDU models and reduces the equipment modification costs caused by the limited temperature adjustment range.

[0065] It should be noted that the first heating component 52 and the second heating component can adopt heating structures in the prior art, such as electric heating tubes, electric heating rods and other electric heating elements; wherein, the first heating component 52 can be built into the storage unit 1, directly contacting the internal circulating medium, or attached to the outer wall of the storage unit 1, and heating the internal circulating medium through heat conduction; the second heating component can be built into the buffer unit 6, or attached to the outer wall of the buffer unit 6, and heating the internal circulating medium through heat conduction.

[0066] In this embodiment, the storage unit 1 and the buffer unit 6 have the same structure. The following description uses the structure of the storage unit 1 as an example. The storage unit 1 includes a tank 11, a safety valve 12, and an exhaust valve 13. The tank 11 is used to store circulating media. The safety valve 12 is located at the top of the tank 11 and communicates with the inner cavity of the tank 11. The exhaust valve 13 is located at the top of the tank 11 and communicates with the inner cavity of the tank 11. When the pressure inside the tank 11 exceeds the preset safety range, the safety valve 12 will automatically open and release part of the media or pressure, quickly reducing the pressure inside the tank 11 to a safe range. This prevents safety accidents such as deformation, leakage, or even rupture of the tank 11 due to excessive pressure, providing safety protection for the stable operation of the storage unit 1.

[0067] In addition, the exhaust valve 13 is located at the top of the tank 11 and communicates with the inner cavity. It can discharge the gas accumulated in the tank 11, ensuring that the tank 11 is mainly filled with liquid medium, reducing the interference of gas resistance on medium transportation, maintaining the continuity and stability of medium circulation, and providing a stable medium supply basis for CDU testing.

[0068] It should be noted that the specific models of safety valve 12 and exhaust valve 13 can be selected according to the actual application scenario, so they will not be described in detail. Preferably, there are two exhaust valves 13, one of which is an automatic exhaust valve 13, which can automatically discharge the gas accumulated in the tank 11, and the other is a manual exhaust valve 13, which can be manually operated to discharge the gas when needed. The two work together to ensure that the gas in the tank 11 is effectively discharged to maintain the stability of the medium circulation.

[0069] To improve temperature control accuracy, the CDU testing machine also includes a parameter adjustment component 8. This component monitors the temperature of the circulating medium and feeds the monitoring data back to the load simulation component 5. With this setup, the parameter adjustment component 8 can capture the actual temperature of the circulating medium in real time and generate monitoring data. Upon receiving the data, the load simulation component 5 can quickly determine whether the current temperature meets the preset range, thus ensuring that the circulating medium temperature remains stable within the operating range required by the CDU under test. This provides a precise temperature environment for testing parameters such as CDU heat exchange performance and flow-head characteristics, improving the reliability and accuracy of the test data.

[0070] Specifically, the parameter adjustment component 8 includes at least one temperature sensor 81, which is disposed on each delivery branch pipe 21 and / or each delivery sub-pipe 3. The temperature sensor 81 is configured to detect the temperature of the circulating medium in its corresponding pipe. That is, the temperature sensor 81 of the parameter adjustment component 8 can be disposed in three ways: only on each delivery branch pipe 21, only on each delivery sub-pipe 3, or simultaneously on each delivery branch pipe 21 and each delivery sub-pipe 3.

[0071] When installed only on each delivery branch pipe 21, it can monitor the temperature status of the overall circulating medium in the system in real time, ensuring the stability of the base temperature of the medium output from the storage unit 1, and providing basic monitoring for a single CDU under test or test scenarios with high requirements for overall temperature consistency. When installed only on each delivery sub-pipe 3, it can accurately capture the local medium temperature entering each CDU under test, adapting to scenarios where multiple CDUs of different models are tested simultaneously, and meeting differentiated temperature monitoring needs. When installed on both, it can control the overall temperature benchmark through the temperature sensor 81 of each delivery branch pipe 21, and also focus on local temperature details through the temperature sensor 81 of each delivery sub-pipe 3, realizing full-area temperature monitoring, improving the accuracy of temperature control and the efficiency of fault diagnosis, and flexibly adapting to different test requirements.

[0072] Specifically, the parameter adjustment assembly 8 also includes at least one pressure regulating element 82, which is disposed on each delivery branch pipe 21 and / or each delivery sub-pipe 3. The pressure regulating element 82 is configured to adjust the pressure of the circulating medium in its corresponding pipe. That is, the pressure regulating element 82 of the parameter adjustment assembly 8 may be disposed on each delivery branch pipe 21, or only on each delivery sub-pipe 3, or simultaneously on each delivery branch pipe 21 and each delivery sub-pipe 3.

[0073] When installed only on each delivery branch pipe 21, the overall pressure of the circulating medium can be regulated to ensure that the pressure of the medium delivered from storage unit 1 to subsequent pipes meets the system's basic pressure standard, providing a stable pressure base for all CDUs under test. When installed only on each delivery sub-pipe 3, the medium pressure in the corresponding pipe can be adjusted individually according to the pressure requirements of different CDUs under test, meeting the differentiated pressure requirements when multiple CDUs of different models are tested simultaneously. When installed on both, the pressure regulating components 82 of each delivery branch pipe 21 can maintain overall pressure stability, while the pressure regulating components 82 of each delivery sub-pipe 3 can perform local pressure fine-tuning, avoiding the impact of overall pressure fluctuations or local pressure deviations on the performance testing of the CDUs under test, ensuring the accuracy of test data for parameters such as CDU flow-head characteristics and pressure resistance stability, and further enhancing the adaptability of the CDU testing machine to different testing scenarios.

[0074] Specifically, the pressure regulating component 82 includes a pressure sensor 821 and a regulating valve 822. The pressure sensor 821 can monitor and display the actual pressure of the circulating medium in the delivery branch pipeline 21 or delivery sub-pipeline 3 in real time, providing accurate data for pressure regulation. The regulating valve 822 adjusts its opening based on the data from the pressure sensor 821. When the pressure is lower than a preset value, the opening is increased to increase pressure; when the pressure is higher than the preset value, the opening is decreased to reduce pressure, maintaining stable pressure within the pipeline. Simultaneously, when the pressure sensor 821 detects that the pressure exceeds the safe range, the regulating valve 822 can quickly reduce the pressure, preventing damage to the interfaces of the delivery branch pipeline 21, delivery sub-pipeline 3, or the CDU components under test, ensuring equipment safety. Furthermore, a stable pressure environment reduces distortion of test data caused by pressure fluctuations, ensuring the reliability of CDU performance parameter test results.

[0075] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A CDU testing machine, characterized in that, The CDU test machine includes a storage unit (1), a main delivery pipeline (2), a branch delivery pipeline (3), a return pipeline (4), and a load simulation component (5), wherein: The storage unit (1) is used to store circulating media; The main conveying pipeline (2) includes multiple parallel conveying branch pipelines (21) and a junction pipeline (22). The inlet of each conveying branch pipeline (21) is connected to the outlet of the storage unit (1), and the outlet of each conveying branch pipeline (21) is connected to the inlet of the junction pipeline (22). Multiple delivery sub-pipes (3) are arranged in parallel. The inlet of each delivery sub-pipe (3) is connected to the outlet of the manifold (22). The outlet of each delivery sub-pipe (3) is provided with a docking part (31) that can be adapted to different CDU interfaces. The outlet of the CDU to be tested is connected to the inlet of the storage unit (1) through the return pipe (4); The load simulation component (5) includes multiple load units (51), each load unit (51) is disposed on each of the conveying branch pipes (21) in a corresponding manner. Each load unit (51) can be turned on and off individually to control the on / off state of the corresponding conveying branch pipe (21), and each load unit (51) can heat the circulating medium flowing in the corresponding conveying branch pipe (21) so as to adjust the total heat output of the circulating medium by turning on different numbers of the load units (51).

2. The CDU testing machine according to claim 1, characterized in that, The CDU tester also includes a buffer unit (6), the outlet of each of the delivery branch pipes (21) is connected to the inlet of the buffer unit (6), and the outlet of the buffer unit (6) is connected to the inlet of the manifold (22).

3. A CDU testing machine according to claim 2, characterized in that, The CDU test machine also includes a balance pipeline (7) connecting the storage unit (1) and the buffer unit (6) so that it can be turned on when the pressure difference of the circulating medium in the storage unit (1) and the buffer unit (6) exceeds a preset range.

4. A CDU testing machine according to claim 2, characterized in that, The load simulation component (5) further includes a first heating element (52) and a second heating element, wherein: The first heating element (52) is provided corresponding to the storage unit (1) and is used to heat the circulating medium in the storage unit (1); The second heating component is provided corresponding to the buffer unit (6) and is used to heat the circulating medium inside the buffer unit (6); Both the first heating element (52) and the second heating element can be turned on and off independently.

5. A CDU testing machine according to claim 1, characterized in that, The storage unit (1) includes a tank (11), a safety valve (12), and an exhaust valve (13), wherein: The tank (11) is used to store circulating media; The safety valve (12) is located at the top of the tank (11) and communicates with the inner cavity of the tank (11); The exhaust valve (13) is located at the top of the tank (11) and communicates with the inner cavity of the tank (11).

6. A CDU testing machine according to claim 1, characterized in that, The CDU test machine also includes a parameter adjustment component (8), which is used to monitor the temperature of the circulating medium and feed back the temperature monitoring data to the load simulation component (5).

7. A CDU testing machine according to claim 6, characterized in that, The parameter adjustment component (8) includes at least one temperature sensor (81) disposed on each of the conveying branch pipes (21) and / or each of the conveying sub-pipes (3), and the temperature sensor (81) is configured to detect the temperature of the circulating medium in its corresponding pipe.

8. A CDU testing machine according to claim 6, characterized in that, The parameter adjustment component (8) further includes at least one pressure regulator (82), which is disposed on each of the conveying branch pipes (21) and / or each of the conveying sub-pipes (3), and the pressure regulator (82) is configured to adjust the pressure of the circulating medium in its corresponding pipe.

9. A CDU testing machine according to claim 8, characterized in that, The pressure regulating component (82) includes a pressure sensor (821) and a regulating valve (822).

10. A CDU testing machine according to claim 1, characterized in that, Each of the aforementioned delivery sub-pipes (3) is detachably equipped with a sealing component, and each of the aforementioned sealing components is configured to seal the corresponding delivery sub-pipe (3) when it is not connected to the CDU interface.

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