Current sharing testing device

Abstract

The utility model discloses a flow equalization testing device, and relates to the technical field of computers, the flow equalization testing device comprises a water circulation assembly, a plurality of internal loads, a plurality of external loads and a plurality of first flow detection pieces, and the water circulation assembly is connected with a liquid separator and supplies cooling liquid to the liquid separator; two ends of the internal load are respectively connected with a sub liquid inlet of the liquid separator and a sub liquid outlet of the liquid separator; the two ends of the external load are connected with the sub liquid inlets and the sub liquid outlets of the liquid separator respectively, the external load is connected with the internal load in parallel, and cooling liquid enters the internal load and the external load through the sub liquid inlets of the liquid separator and flows out from the sub liquid outlets of the liquid separator; the first flow detection pieces are located between the sub-liquid inlets and the internal loads and / or between the sub-liquid outlets and the internal loads and used for detecting the flow of the internal loads, the technical problem that the flow equalization testing cost is high is solved, and the technical effect of saving the cost is achieved.

Description

Technical Field

[0001] The present application relates to the field of computer technology, and in particular to a current distribution testing device. Background Art

[0002] In modern data centers and high-performance computing environments, Manifold, the cooling fluid return manifold, plays a vital role, especially in the design of liquid-cooled cabinets. It is responsible for evenly distributing the coolant to each server cold plate to ensure effective heat management. The unbalanced flow of the Manifold will cause insufficient flow through the server. The server cannot completely remove the heat through the coolant during operation, which will cause the server to report high temperature. However, the existing Manifold flow uniformity test method has significant limitations and cannot comprehensively and accurately evaluate the performance of the Manifold, especially for complex systems with multiple branches. Traditional Manifold flow uniformity tests usually rely on directly short-circuiting the flow meter between the water inlet and return manifolds of the manifold, and measuring the flow of some branches to approximately infer the overall flow uniformity. Although this method is simple, its effectiveness is seriously questioned, mainly in the following aspects:

[0003] 1. High testing costs and low efficiency: For a multi-branch Manifold system, if the flow of each branch is to be measured one by one, a large number of flow meters and other testing instruments are required, which will significantly increase the testing cost and time consumption, and reduce the economy and efficiency of the test.

[0004] 2. Limitations of Local Measurement: Existing methods are limited to direct measurement of a few branches, failing to fully reflect the flow distribution characteristics of the entire Manifold system. This limitation not only fails to ensure balanced coolant flow across all servers, but also further degrades accuracy as the number of servers increases or the cooling system design becomes more complex.

[0005] 3. Lack of Real-World Load Simulation: In actual operation, Manifold must work with a variety of server cold plates, each with unique flow resistance characteristics. However, the short-circuit flowmeter used in traditional testing fails to account for this factor and, therefore, cannot simulate real-world load conditions, thus compromising the credibility of the test results. Utility Model Content

[0006] The present application provides a current distribution test device to at least solve the problem of high cost of current distribution test in related technologies.

[0007] The present application provides a flow uniformity testing device, comprising a water circulation component, multiple internal loads, multiple external loads and multiple first flow detection components, the water circulation component is connected to a liquid separator and supplies coolant to the liquid separator; the two ends of the internal load are respectively connected to the sub-liquid inlet and the sub-liquid outlet of the liquid separator; the two ends of the external load are respectively connected to the sub-liquid inlet and the sub-liquid outlet of the liquid separator, the external load and the internal load are connected in parallel, the coolant enters the internal load and the external load through each sub-liquid inlet of the liquid separator, and flows out from each sub-liquid outlet of the liquid separator; the liquid separator has multiple sub-liquid inlets and multiple sub-liquid outlets, each internal load and each external load is connected to the liquid separator through the sub-liquid inlet and sub-liquid outlet, each first flow detection component is located between the sub-liquid inlet, sub-liquid outlet and each internal load and / or between the sub-liquid outlet and each internal load, and is used to detect the flow at each internal load.

[0008] Furthermore, the internal loads are arranged at intervals along the arrangement direction of the sub-liquid inlets and / or along the arrangement direction of the sub-liquid outlets to test the flow uniformity at different positions of the liquid distributor.

[0009] Furthermore, along the arrangement direction of each sub-liquid inlet, the range where the internal load and the external load are located has a plurality of regions separated by equal lengths, and an internal load is provided in each region.

[0010] Furthermore, the internal load includes a first adjustment member for adjusting the flow resistance, the first adjustment member is an automatic adjustment member, and the flow uniformity testing device also includes a first pressure difference detection member, the first pressure difference detection member is connected in parallel with the internal load and can detect the pressure difference across the internal load.

[0011] Furthermore, the external load includes a second adjustment member for adjusting the flow resistance, and the second adjustment member is a manual adjustment member.

[0012] Furthermore, the flow uniformity testing device also includes a second pressure differential detection component, which is connected in parallel with the liquid separator. The liquid separator and the second pressure differential detection component are both detachably connected to an external load, and the external load can be selectively set on the liquid separator or connected in parallel to both ends of the second pressure differential detection component.

[0013] Furthermore, the water circulation component includes a liquid supply channel and a liquid return channel. The liquid supply channel is connected to the liquid inlet of the liquid separator and supplies liquid to the liquid separator. The coolant is diverted from the liquid inlet to each sub-liquid inlet. The liquid return channel is connected to the liquid outlet of the liquid separator and returns liquid to the liquid separator. After passing through the internal load and the external load, the coolant is collected from the sub-liquid outlet to the liquid outlet and flows into the liquid return channel.

[0014] Furthermore, the water circulation component also includes a first control component, a first pressure detection component, a second pressure detection component and a third adjustment component. The first control component is arranged in the liquid supply channel and is used to adjust the flow of the liquid supply channel; the first pressure detection component is located in the liquid supply channel and is used to detect the pressure of the liquid supply channel; the second pressure detection component is located in the return liquid channel and is used to detect the pressure of the return liquid channel; the two ends of the third adjustment component are respectively connected to the liquid supply channel and the return liquid channel, and are arranged in parallel with the liquid distributor. The third adjustment component is used to adjust the flow of the liquid distributor and to relieve pressure when the flow of the liquid supply channel exceeds a threshold value.

[0015] Furthermore, the water circulation component also includes: a second flow detection component and a third flow detection component, the second flow detection component is located in the liquid supply channel and is used to detect the flow of the liquid supply channel; the third flow detection component is located between the liquid supply channel and the liquid inlet or between the return liquid channel and the liquid outlet, and is used to detect the flow at the liquid inlet or the flow at the liquid outlet.

[0016] Furthermore, along the arrangement direction of each sub-liquid inlet, the range where the internal load and the external load are located has a plurality of areas separated by equal lengths, and an internal load is provided in each area; the external load includes a second adjustment member for adjusting the flow resistance, and the second adjustment member is a manual adjustment member. The flow uniformity testing device also includes a second pressure difference detection member, and the second pressure difference detection member is connected in parallel with the liquid separator. The external load and the liquid separator and the second pressure difference detection member are all detachably connected and can be selectively arranged on the liquid separator or in parallel at both ends of the second pressure difference detection member; the water circulation component includes a liquid supply channel, a liquid return channel, a first control member, a first pressure detection member, The second pressure detection part, the third adjustment part, the liquid separator has a liquid inlet and a liquid outlet, the liquid supply channel is connected to the liquid inlet of the liquid separator, and supplies liquid to the liquid separator, the coolant is diverted from the liquid inlet to each sub-liquid inlet, the return liquid channel is connected to the liquid outlet of the liquid separator, and returns liquid to the liquid separator, and the coolant is collected from the sub-liquid outlet to the liquid outlet after passing through the internal load and the external load and flows into the return liquid channel; the flow uniformity testing device also includes a shut-off valve and a water quality detection component, and a shut-off valve for on and off is provided between the liquid inlet and the liquid supply channel and between the second pressure difference detection part and the liquid supply channel. The water quality detection component is connected to the liquid separator and performs water quality detection.

[0017] Through the present application, since multiple external loads are set in parallel with the internal load, part of the external load replaces the internal load to provide flow resistance between the sub-liquid inlet and the sub-liquid outlet, so that a load is connected between the multiple sub-liquid inlets and liquid outlets of the liquid distributor. On the one hand, the structure of the external load is relatively simple and the cost is lower than that of the internal load, which is conducive to cost saving. On the other hand, for the situation where the number of sub-liquid inlets and sub-liquid outlets of the liquid distributor is large and the internal load is small, resulting in the channel between some sub-liquid inlets and sub-liquid outlets being difficult to measure, an external load can be used instead of the internal load to simulate the real load environment, thereby making the flow uniformity test results of the liquid distributor more accurate. Therefore, the technical problem of high cost of flow uniformity test in related technologies can be solved, and the technical effect of saving the cost of flow uniformity test can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A wiring diagram of a current distribution test device provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of a current distribution test device provided in an embodiment of the present application;

[0021] Figure 3 A test flow chart of a current distribution test device provided in an embodiment of the present application.

[0022] The above drawings include the following reference numerals:

[0023] 10. Internal load; 20. External load; 30. Liquid distributor; 31. Sub-liquid inlet; 32. Sub-liquid outlet; 33. Liquid inlet; 34. Liquid outlet; 40. First flow detection component; 50. First pressure difference detection component; 60. Second pressure difference detection component; 70. Water circulation component; 71. Liquid supply channel; 72. Liquid return channel; 73. First control component; 74. First pressure detection component; 75. Second pressure detection component; 76. Third regulating component; 77. Second flow detection component; 78. Third flow detection component; 79. Shut-off valve; 80. Water quality detection component; 90. Diaphragm pump; 100. Water tank; 110. Fourth regulating component; 120. Third pressure detection component. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] It should be noted that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely for ease of description and simplification of the present application. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present application. The terms "mounted," "connected," and "connected" should be interpreted broadly, and may include, for example, fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. The terms "parallel," "perpendicular," and "equal" encompass the described conditions and conditions similar to the described conditions, provided that the range of the similar conditions is within an acceptable range of deviation, as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism may be, for example, within 5°; "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity may also be, for example, within 5°. "Equal" includes both absolute equality and approximate equality, where the acceptable deviation range for approximate equality may be, for example, that the difference between the two is less than or equal to 5% of either. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0026] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] like Figures 1 to 3As shown, an embodiment of the present application provides a flow uniformity testing device, including a water circulation component 70, a plurality of internal loads 10, a plurality of external loads 20 and a plurality of first flow detection components 40, the water circulation component 70 is connected to the liquid separator 30, and supplies coolant to the liquid separator 30; the two ends of the internal load 10 are respectively connected to the sub-liquid inlet 31 and the sub-liquid outlet 32 of the liquid separator 30; the two ends of the external load 20 are respectively connected to the sub-liquid inlet 31 and the sub-liquid outlet 32 of the liquid separator 30, the external load 20 and the internal load 10 are connected in parallel with the liquid separator 30, the coolant enters the internal load and the external load through each sub-liquid inlet 31 of the liquid separator 30, and flows out from each sub-liquid outlet 32 of the liquid separator 30; each first flow detection component 40 is located between the sub-liquid inlet 31, the sub-liquid outlet 32 and each internal load 10 and / or between the sub-liquid outlet 32 and the internal load 10, and is used to detect the flow at each internal load 10.

[0028] In this embodiment, multiple external loads 20 are set in parallel with the internal load 10, so that part of the external loads 20 replace the internal load 10 to provide flow resistance between the sub-liquid inlet 31 and the sub-liquid outlet 32, so that a load is connected between the multiple sub-liquid inlets 31 and the liquid outlet 34 of the liquid separator 30. On the one hand, the structure of the external load 20 is relatively simple and the cost is lower than that of the internal load 10, which is conducive to cost saving. On the other hand, for the situation where the number of sub-liquid inlets 31 and sub-liquid outlets 32 of the liquid separator 30 is large and the internal load 10 is small, making it difficult to measure the channels between some sub-liquid inlets 31 and sub-liquid outlets 32, the external load 20 can be used instead of the internal load 10 to simulate the real load environment, thereby making the flow uniformity test results of the liquid separator 30 more accurate.

[0029] It should be noted that the liquid separator 30 is a device for terminal distribution of coolant, which can ensure that the coolant flows evenly in the liquid-cooled cabinet. Its performance is crucial. The flow uniformity testing device of this embodiment is a device for testing the flow uniformity of the liquid separator 30. The sub-liquid inlet 31 and the sub-liquid outlet 32 of the liquid separator 30 of this embodiment are connected through the internal load 10 or the external load 20 to form a loop. The loop between each sub-liquid inlet 31 and the sub-liquid outlet 32 becomes a channel, and each channel is connected to an internal load 10 or an external load 20. This embodiment measures the flow rate of the channel of the liquid separator 30 where the internal load 10 is located to evaluate the flow uniformity of each channel of the liquid separator 30.

[0030] like Figure 1 、 Figure 2As shown, the internal load 10 of this embodiment refers to an inherent load connected to other components of the flow uniformity testing device such as the first flow detection component 40, the liquid separator 30, etc., and the external load 20 refers to a load whose flow resistance can be adjusted to be the same as the flow resistance of the internal load 10, and is connected to the liquid separator 30 after adjusting the flow resistance to simulate a real load. In this embodiment, the first flow detection component 40 is only set between the internal load 10 and the sub-liquid outlet 32, and the external load 20 adopts a method of directly connecting the two ends to the sub-liquid inlet 31 and the sub-liquid outlet 32, thereby greatly reducing the test cost when the number of sub-liquid inlets 31 and sub-liquid outlets 32 is large. Optionally, the first flow detection component 40 can be set as an ultrasonic sensor, which can detect the flow through the internal load 10 through the first flow detection component 40, so as to be used to evaluate the flow uniformity test of the liquid separator 30. It should be noted that the arrows in the drawings indicate the flow direction of the coolant.

[0031] The flow uniformity testing device of this embodiment may include a shell, an internal load 10 is arranged inside the shell, and the external load 20 can be arranged outside the shell due to frequent disconnection and disconnection. The external load 20 of this embodiment has a simple structure and is arranged as a hose, and a button for adjusting the flow resistance is provided on the hose. Quick-release self-sealing joints are provided at both ends of the hose to facilitate the adjustment of the flow resistance and the quick connection with the liquid dispenser 30. Since the flow resistance of the external load 20 can be adjusted, the external load 20 can adapt to the flow uniformity test under various working conditions. The flow resistance can be changed by adjusting the button to meet different test requirements, thereby improving the flexibility and reusability of the external load 20, thereby further reducing costs.

[0032] In this embodiment, the internal loads 10 are arranged at intervals along the arrangement direction of each sub-liquid inlet 31 and / or along the arrangement direction of each sub-liquid outlet 32 to test the flow uniformity at different positions of the liquid separator 30. In this way, by setting the internal loads 10 at multiple positions of the liquid separator 30, the flow uniformity performance of the liquid separator 30 in the entire fluid path can be more comprehensively evaluated, rather than just locally, thereby making the test results more reliable. Specifically, the liquid separator 30 of this embodiment is set to be rectangular, and the sub-liquid inlet 31 and the sub-liquid outlet 32 are arranged along the length direction of the liquid separator 30, and the sub-liquid inlet 31 and the sub-liquid outlet 32 are arranged one by one. Along the length direction of the liquid separator 30, multiple sub-liquid inlets 31 and sub-liquid outlets 32 are selected at different positions to connect the internal load 10, so that the internal load 10 is installed at different positions of the liquid separator 30 at intervals, and then a flow uniformity test is performed to ensure that the flow at different positions of the liquid separator 30 can be measured, thereby greatly reducing the measurement error. Compared with the flow detection method of all branches, it greatly saves measurement costs, and at the same time can improve the reliability of the flow uniformity measurement results, and reduce server failures and losses caused by high temperature reports caused by inconsistent flow uniformity due to inaccurate measurement. Of course, the shape of the liquid separator 30 is not unique. According to actual needs, the liquid separator 30 can be set to other shapes. Accordingly, the sub-liquid inlet 31 and the sub-liquid outlet 32 can also be distributed along the length extension direction or the width extension direction of the liquid separator 30 to ensure that the sub-liquid inlet 31 and the sub-liquid outlet 32 are set one by one.

[0033] Preferably, along the arrangement direction of the sub-liquid inlets 31, the range where the internal load 10 and the external load 20 are located has multiple areas separated by equal lengths, and an internal load 10 is provided in each area. The range where the internal load 10 and the external load 20 are located along the arrangement direction of the sub-liquid inlets 31 is also the range where the sub-liquid inlets 31 of the liquid separator 30 are located. That is to say, along the length direction of the liquid separator 30, the liquid separator 30 is divided into multiple equal-length segments, and the internal load 10 is connected between at least one sub-liquid inlet 31 and the sub-liquid outlet 32 in each segment, so that the flow uniformity of the liquid separator 30 can be analyzed more carefully, which helps to discover possible local flow resistance abnormalities of the liquid separator 30. Specifically, for example, when testing a liquid separator 30 having 24 sub-liquid inlets 31 and sub-liquid outlets 32, the liquid separator 30 can be divided into three sections along the arrangement direction of the sub-liquid inlets 31, and two sub-liquid inlets 31 are selected from each of the three sections, that is, a total of six sub-liquid inlets 31 are selected to connect to the internal load 10, and the external load 20 is connected between the other sub-liquid inlets 31 and sub-liquid outlets 32. The flow uniformity of the entire liquid separator 30 is judged by the internal load 10 between these six sub-liquid inlets 31 and sub-liquid outlets 32. Of course, the liquid separator 30 is divided into several sections, and several groups of sub-liquid inlets 31 and sub-liquid outlets 32 are selected in each section. This can be adjusted according to actual needs to ensure that at least one liquid inlet 33 and sub-liquid outlet 32 in each section of the liquid separator 30 is connected to an internal load 10.

[0034] In this embodiment, the internal load 10 includes a first automatic adjustment member for adjusting the flow resistance. The flow uniformity testing device also includes a first differential pressure detector 50, which is connected in parallel with the internal load 10 and is capable of detecting the pressure difference across the internal load 10. Thus, the flow resistance of the internal load 10 can be precisely controlled by the first automatic adjustment member, while the first differential pressure detector 50 is used to detect the change in pressure difference after the flow resistance is adjusted, ensuring consistency in test conditions. Specifically, the first adjusting component can be set as a linear electric proportional valve. According to different flow resistance requirements, the linear electric proportional valve can automatically adjust the pressure of the current channel to adjust the flow resistance. The smaller the opening of the linear electric proportional valve, the greater the pressure difference. The larger the opening of the linear electric proportional valve, the smaller the pressure difference, so that the flow resistance of the internal load 10 can be adjusted to meet the test requirements. The first pressure difference detection component 50 can be set as a pressure difference sensor. The first pressure difference detection component 50 is connected to the two ends of the internal load 10, so as to detect the pressure difference changes at both ends of the internal load 10 in real time, so that the internal load 10 can quickly and accurately adjust the flow resistance, and ensure that the flow resistance of all internal loads 10 can be adjusted to be consistent, thereby improving test efficiency and accuracy.

[0035] In this embodiment, the external load 20 includes a second adjusting member for adjusting the flow resistance, and the second adjusting member is a manual adjusting member, so that by manually adjusting the second adjusting member, the flow resistance of the external load 20 can be flexibly adjusted according to the test requirements. Although it is not as accurate as automatic adjustment, it is less expensive and suitable for large-scale testing scenarios. It can significantly reduce the test cost while ensuring the basic accuracy of the test. Specifically, between the sub-liquid inlet 31 and the sub-liquid outlet 32 to which there is no internal load 10 to be connected, the flow resistance of the external load 20 is adjusted to be consistent with the flow resistance of the internal load 10, and then the internal load 10 is replaced and connected between the sub-liquid inlet 31 and the sub-liquid outlet 32 to perform a flow uniformity test, thereby improving the accuracy of the flow uniformity test results. The second adjusting member can be set to a structure such as a button to facilitate manual operation. Of course, according to actual conditions, the second adjusting member can also be automatically adjusted.

[0036] In this embodiment, the flow uniformity testing device further includes a second pressure differential detection member 60, which is connected in parallel with the liquid separator 30. Both the liquid separator 30 and the second pressure differential detection member 60 are detachably connected to the external load 20. The external load 20 can be selectively disposed on the liquid separator 30 or connected in parallel to both ends of the second pressure differential detection member 60. In other words, the external load 20 can be connected to both ends of the second pressure differential detection member 60 so that the second pressure differential detection member 60 displays the pressure difference across the external load 20 in real time to facilitate flow resistance adjustment of the external load 20. After the flow resistance is adjusted, the external load 20 can also be connected between the sub-liquid inlet 31 and the sub-liquid outlet 32 of the liquid separator 30 to provide flow resistance instead of the internal load 10. In this way, when the external load 20 is connected to the two ends of the second pressure differential detection element 60 to adjust the flow resistance, the second pressure differential detection element 60 can detect the pressure difference at both ends of the external load 20 to obtain the flow resistance adjustment result of the external load 20. When the flow resistance value reaches the set value, the external load 20 is stopped from being adjusted. The detachable connection between the second pressure differential detection element 60 and the external load 20 enables one second pressure differential detection element 60 to detect the pressure difference of multiple external loads 20, thereby enabling multiple external loads 20 to be connected to the two ends of the same pressure differential detection element to adjust the flow resistance. After adjusting the flow resistance, they are connected between the sub-liquid inlet 31 and the sub-liquid outlet 32 of the liquid separator 30, thereby improving the flexibility and adaptability of the test, thereby further reducing costs. At the same time, after the flow resistance of the external load 20 is adjusted, the second pressure differential detection element 60 is disconnected from the external load 20, and the second pressure differential detection element 60 is connected in parallel with the liquid separator 30, so that the second pressure differential detection element 60 can also test the flow of the liquid separator 30.

[0037] In this embodiment, the water circulation assembly 70 includes a liquid supply channel 71 and a liquid return channel 72. The liquid supply channel 71 is connected to the liquid inlet 33 of the liquid separator 30 and supplies liquid to the liquid separator 30. The coolant is diverted from the liquid inlet 33 to each sub-liquid inlet 31 and supplies liquid to the liquid separator 30. The liquid return channel 72 is connected to the liquid outlet 34 of the liquid separator 30 and returns liquid to the liquid separator 30. After passing through the internal load 10 and the external load 20, the coolant is collected from the sub-liquid outlet 32 to the liquid outlet 34 and flows into the liquid return channel 72. In this way, by establishing a closed water circulation system, a stable fluid supply and return flow can be provided to the liquid separator 30, ensuring the consistency and controllability of the test conditions and facilitating the acquisition of reliable test data. Specifically, the medium circulating in the water circulation component 70 is called coolant. The coolant enters the liquid inlet 33 of the liquid separator 30 through the liquid supply channel 71, and flows into each sub-liquid inlet 31 through the liquid inlet 33, and then flows through each internal load 10 or external load 20, and then flows back to the liquid outlet 34 from each sub-liquid outlet 32 of the liquid separator 30, and finally flows from the liquid outlet 34 to the return liquid channel 72, thereby realizing the circulation of the coolant.

[0038] In this embodiment, the water circulation assembly 70 further includes a first control member 73, a first pressure detection member 74, a second pressure detection member 75, and a third adjustment member 76. The first control member 73 is disposed in the liquid supply channel 71 and is used to adjust the flow rate of the liquid supply channel 71; the first pressure detection member 74 is located in the liquid supply channel 71 and is used to detect the pressure of the liquid supply channel 71; the second pressure detection member 75 is located in the return liquid channel 72 and is used to detect the pressure of the return liquid channel 72; the third adjustment member 76 is connected to the liquid supply channel 71 and the return liquid channel 72 at both ends, and is arranged in parallel with the liquid distributor 30. The third adjustment member 76 is used to adjust the flow rate of the liquid distributor 30 and to release pressure when the flow rate of the liquid supply channel 71 exceeds a threshold. In this way, the first control member 73 can accurately control the liquid inlet flow rate, the first pressure detection member 74 and the second pressure detection member 75 can detect the pressure of the liquid inlet and outlet, and the third adjustment member 76 plays the role of excessive flow protection to ensure test safety. Specifically, the first control component 73 can be set as a water pump, and the water pump can be further set as a variable frequency water pump. The operating frequency of the water pump is adjusted by the difference between the first pressure detection component 74 and the second pressure detection component 75, so that the supply channel 71 and the return channel 72 obtain coolant supply with different pressures; the first pressure detection component 74 and the second pressure detection component 75 can both be set as pressure sensors, and a pressure difference between the supply channel 71 and the return channel 72 is formed between the first pressure detection component 74 and the second pressure detection component 75, and the first control component 73 can be adjusted in the pressure difference mode; the third adjustment component 76 can be set as a proportional valve to open a bypass. When the channel between the sub-liquid inlet 31 and the sub-liquid outlet 32 is closed, the first control component 73 is prevented from being blocked, thereby improving the safety and reliability of the test and avoiding test accidents caused by excessive flow. At the same time, the proportional valve can also be used as a bypass valve to adjust the flow and pressure drop between the sub-liquid inlet 31 and the sub-liquid outlet 32, that is, at the internal load 10 and the external load 20. It should be noted that the pressure difference mode refers to a constant pressure difference mode, that is, the pressure difference remains unchanged.

[0039] In this embodiment, the water circulation assembly 70 also includes a second flow detection member 77 and a third flow detection member 78. The second flow detection member 77 is located in the liquid supply channel 71 and is used to detect the flow rate of the liquid supply channel 71; the third flow detection member 78 is located between the liquid supply channel 71 and the liquid inlet 33 or between the return liquid channel 72 and the liquid outlet 34, and is used to detect the flow rate at the liquid inlet 33 or the flow rate at the liquid outlet 34. In this way, through flow detection, changes in the inlet and outlet flow rates can be more accurately detected, which helps to improve the accuracy and reliability of the test. Specifically, the second flow detection member 77 and the third flow detection member 78 can both be configured as flow meters, preferably, they can be configured as ultrasonic flow meters to improve measurement accuracy. The second flow detection member 77 is set on the liquid supply channel 71 and is connected to the first control member 73. It can detect the overall coolant flow rate of the water circulation assembly 70. In the flow mode, the first control member 73 is adjusted by the second flow detection member 77. In this embodiment, the third flow rate sensor 78 is disposed between the return liquid channel 72 and the liquid outlet 34 and is used to detect the flow rate at the liquid outlet 34. This third flow rate sensor 78 provides feedback on the flow rate at the liquid inlet 33, i.e., the sum of the flow rates at each sub-liquid inlet 31, thereby determining the flow regulation effect. It should be noted that the flow rate mode refers to a constant flow rate mode, i.e., the flow rate remains constant, and the flow rate sensor displays flow rate fluctuations in real time.

[0040] In this embodiment, a shutoff valve 79 for opening and closing is provided between the liquid inlet 33 and the liquid supply channel 71, and between the second pressure differential detection member 60 and the liquid supply channel 71. The shutoff valve 79 can be a manual ball valve or an automatic ball valve. The shutoff valve 79 between the liquid inlet 33 and the liquid supply channel 71 is connected to the liquid inlet 33. Opening this shutoff valve 79 opens the channel for coolant to flow into the liquid distributor 30, thereby starting the flow uniformity test. The shutoff valve 79 between the second pressure differential detection member 60 and the liquid supply channel 71 is connected to the second pressure differential detection member 60. When the external load 20 is connected to both ends of the second pressure differential detection member 60, opening this shutoff valve 79 allows coolant to flow from the liquid supply channel 71 to the second pressure differential detection member 60, thereby enabling flow resistance adjustment of the external load 20.

[0041] The flow uniformity testing device of this embodiment is also provided with a fourth regulating member 110 and a third pressure detecting member 120. The fourth regulating member 110 is arranged between the return liquid channel 72 and the liquid outlet 34 and is connected to the liquid outlet 34, so that the flow rate and pressure at the liquid outlet 34 can be regulated. The fourth regulating member 110 can be set as a linear proportional valve and can cooperate with the third flow detecting member 78 to achieve flow regulation. The third pressure detecting member 120 is arranged between the liquid supply channel 71 and the liquid inlet 33. More specifically, the third pressure detecting member 120 can be arranged between the shut-off valve 79 and the liquid inlet 33 and be connected to the liquid inlet 33. The third pressure detecting member 120 can be set as a pressure sensor for detecting the pressure at the liquid inlet 33 and cooperating with the third regulating member 76 to regulate the pressure between the liquid inlet 33 and the liquid outlet 34 of the liquid distributor 30.

[0042] like Figure 2 As shown, in this embodiment, the flow uniformity testing device also includes a water quality detection component 80. The water quality detection component 80 is connected to the liquid dispenser 30 and performs water quality testing, thereby ensuring the cleanliness of the test environment, which is conducive to improving the reliability of the test results. It can fully evaluate the flow uniformity performance and water quality of the liquid dispenser 30, ensuring the comprehensiveness and accuracy of the test. Specifically, the water quality detection component 80 includes a pH detection sensor, a conductivity sensor, and a turbidity sensor, thereby detecting the pH, conductivity, and turbidity of the coolant flowing through the water quality detection component 80 in real time.

[0043] The flow uniformity testing device of this embodiment also includes a water tank 100 and a diaphragm pump 90. The water tank 100 can provide a certain capacity of coolant to provide coolant supply for the water circulation component 70. The diaphragm pump 90 is provided to pump water from the water tank 100 to the water quality detection component 80 for detection and circulate it back to the water tank 100. When the water quality detection component 80 detects that the water quality exceeds the standard, the water tank 100 can automatically drain and replenish the water, so that the cleanliness of the water quality in the water circulation component 70 is maintained within the qualified range, preventing the water quality from exceeding the standard and causing pollution or corrosion to the various components of the flow uniformity testing device, which is beneficial to ensuring the reliability of the test results and at the same time beneficial to extending the service life of the flow uniformity testing device.

[0044] The flow uniformity testing device of this embodiment measures the flow consistency between each sub-liquid inlet 31 and each sub-liquid outlet 32 by connecting an internal load 10 and an external load 20 of the same flow resistance between the sub-liquid inlet 31 and the sub-liquid outlet 32. The liquid separator 30 can be provided as an integral unit, with each sub-liquid inlet 31 and each sub-liquid outlet 32 provided together, or it can be provided as a separate unit, with the liquid separator 30 including a liquid supply manifold and a liquid return manifold, with each sub-liquid inlet 31 located on the liquid supply manifold and each sub-liquid outlet 32 located on the liquid return manifold. The liquid supply manifold and the liquid return manifold appear as a set, and a variable frequency water pump is used to provide the liquid separator 30 with coolant of a specific pressure and flow rate. After passing through the internal load 10 and the external load 20, the coolant flows back to the sub-liquid outlet 32 from the liquid return manifold and finally flows back to the liquid return channel 72 to form a coolant circulation system.

[0045] like Figure 3As shown, the test process of the flow uniformity test device of this embodiment is as follows: 1. The water circulation component 70 supplies coolant to the liquid distributor 30. The coolant flows through the external load 20 and the internal load 10 and then flows back to the sub-liquid outlet 32. Along the arrangement direction of each sub-liquid inlet 31, the sub-liquid inlet 31 at different positions is selected to connect to the internal load 10. The internal load 10 can be provided with a hose connected to the liquid distributor 30, and a quick self-sealing structure is provided at the end of the hose to facilitate connection with the liquid distributor 30 and improve installation and removal efficiency. 2. The external load 20 is taken and connected in parallel to the two ends of the second pressure differential detection component 60. The flow resistance of the external load 20 is manually adjusted. Start the flow resistance adjustment function, start the shut-off valve 79 between the second pressure difference detection component 60 and the liquid supply channel 71, and close the shut-off valve 79 between the liquid supply channel 71 and the liquid distributor 30, set the flow setting value 1, and then close the third adjustment component 76. The first control component 73 operates according to the set flow setting value 1 until the value of the second flow detection component 77 meets the flow setting value 1. At this time, adjust the second adjustment component. When the value of the second pressure difference detection component 60 meets the required pressure difference setting value 2, stop adjusting, and adjust the corresponding number of external loads 20 in turn according to the required number of external loads 20. 3. The two ends of the external load 20 after the flow resistance adjustment is completed are respectively connected to the sub-liquid inlet 31 and the sub-liquid outlet 32 until all the sub-liquid inlets 31 and sub-liquid outlets 32 that are not connected to the internal load 10 are fully connected with the external load 20. 4. Start the flow uniformity test, close the liquid supply channel 71 and the second pressure difference detection component 60, start the shut-off valve 79 between the liquid supply channel 71 and the liquid separator 30. When performing the flow uniformity test, the system needs to perform the pressure difference mode, that is, the pressure difference between the two ends of the liquid separator 30, namely the liquid inlet 33 and the liquid outlet 34, remains consistent, and measure whether the flow between each sub-liquid inlet 31 and each liquid outlet 34 is balanced. At this time, the first control component 73 is adjusted according to the difference between the first pressure detection component 74 and the second pressure detection component 75 until the pressure difference reaches the pressure difference setting value 1; 5. After the flow uniformity test, start adjusting the internal load 10. A first flow detection component 40 is provided between each internal load 10 and the sub-liquid outlet 32, and a first pressure difference detection component 50 is connected in parallel at both ends of each internal load 10. The flow resistance is adjusted by adjusting the first adjustment component. When the first pressure difference detection component 50 reaches the pressure difference setting value 3, the adjustment is stopped, and the flow resistance of all internal loads 10 is adjusted at one time. 6. The coolant is pumped from the water tank 100 by the first control component 73 to the liquid inlet 33 of the liquid separator 30, then flows through the external load 20 and the internal load 10 between each sub-liquid inlet 31 and the sub-liquid outlet 32, and flows back to the water tank 100 through the liquid outlet 34. At this time, a circulation system is formed for flow test. When the test time reaches the set time 1, the average flow rate of each first flow detection component 40 is counted. This average value is the average flow rate from 1 minute after the start of this step to the set time 1. The longer the set time 1 is, the more accurate the flow uniformity test is.7. Compare the flow rates of each first flow detection component 40, and compare the difference between their maximum and minimum flow rates. When the difference is less than or equal to the flow difference value 1, the task flow uniformity meets the requirements. When the difference is greater than the flow difference value 1, it is considered that the flow uniformity of the liquid distributor 30 does not meet the requirements. 8. After the test is completed, stop the first control component 73 and close the shut-off valve 79 between the liquid supply channel 71 and the liquid distributor 30. When the pressure of the third pressure detection component 120 drops to a safe pressure, close the fourth adjustment component 110 and disconnect the connections at the liquid inlet 33, liquid outlet 34, sub-liquid inlet 31, and sub-liquid outlet 32 of the liquid distributor 30 to complete the test. 9. Perform water quality testing before and after each startup. At this time, start the diaphragm pump 90 to pump the coolant from the water tank 100 into the water quality detection component 80 and flow it back to the water tank 100. When the water quality exceeds the standard, the equipment needs to be drained and replenished. The equipment starts the drain valve of the water tank 100 to discharge the coolant inside the water tank 100. When the coolant is drained, close the drain valve, open the replenishing valve, and replenish clean coolant into the water tank 100.

[0046] Among them, the pressure difference setting value 1 is the pressure difference setting value when the flow uniformity test device is running in the constant pressure difference mode, and the operating frequency of the first control member 73 is adjusted by this value; the pressure difference setting value 2 is the flow resistance setting value of the external load 20, and the opening size of the second adjustment member of the external load 20 is determined by this value; the pressure difference setting value 3 is the flow resistance setting value of the internal load 10, and the opening size of the first adjustment key linear proportional valve of the internal load 10 is determined by this value. Since the flow resistance of the internal load 10 and the external load 20 in this embodiment are adjusted to the same flow resistance, the pressure difference setting value 1 is the pressure difference setting value of the external load 20, and the opening size of the second adjustment member of the external load 20 is determined by this value. The difference setting value 2 is set to be the same as the pressure difference setting value 3; the flow setting value 1 is the flow setting value when the flow uniformity test device is operating in constant flow mode, and the operating frequency of the first control component 73 is adjusted by this value; the setting time 1 is to set the test time for the flow uniformity test, which is the time from 1 minute after the flow resistance adjustment of the internal load 10 is completed to the end. This value determines the duration of the flow uniformity test of the liquid distributor 30; the flow difference value 1 is to set the satisfaction standard of the flow uniformity. This value determines the success or failure of the flow uniformity test. The smaller the value, the better the flow uniformity.

[0047] The flow uniformity testing device of this embodiment uniformly selects multiple sub-liquid inlets 31 and sub-liquid outlets 32 along the length direction of the liquid separator 30 to connect to the internal load 10, thereby taking into account the flow uniformity test of the entire liquid separator 30. The external load 20 is connected between the sub-liquid inlets 31 and sub-liquid outlets 32 that cannot be measured due to the small number of internal loads 10 and high costs, and the external load 20 is uniformly adjusted for flow resistance, so that the flow resistance of the external load 20 and the internal load 10 are consistent, ensuring the consistency of measurement, thereby greatly saving the cost of the flow uniformity test and accurately measuring the overall flow uniformity of the liquid separator 30. The water quality detection component 80 of this embodiment can ensure the cleanliness of the liquid separator 30 after measurement without the need for separate rinsing, preventing bacterial growth and pipeline corrosion.

[0048] It should be noted that, in the above embodiments, a plurality refers to at least two.

[0049] The above is a detailed introduction to a current distribution test device provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A current distribution test device, characterized in that: include: a water circulation assembly (70), the water circulation assembly (70) being connected to the liquid separator (30) and supplying cooling liquid to the liquid separator (30); A plurality of internal loads (10), wherein two ends of the internal loads (10) are respectively connected to the sub-liquid inlet (31) of the liquid distributor (30) and the sub-liquid outlet (32) of the liquid distributor (30); A plurality of external loads (20), wherein two ends of the external loads (20) are respectively connected to the sub-liquid inlet (31) and the sub-liquid outlet (32) of the liquid distributor (30), the external loads (20) and the internal loads (10) are connected in parallel, and the coolant enters the internal loads and the external loads through the sub-liquid inlets (31) of the liquid distributor (30) and flows out from the sub-liquid outlets (32) of the liquid distributor (30); A plurality of first flow detection members (40), each of the first flow detection members (40) is located between the sub-liquid inlet (31) and the internal load (10) and / or between the sub-liquid outlet (32) and the internal load (10), and is used to detect the flow at each of the internal loads (10).

2. The current uniformity testing device according to claim 1, characterized in that: The internal loads (10) are arranged at intervals along the arrangement direction of each of the sub-liquid inlets (31) and / or along the arrangement direction of each of the sub-liquid outlets (32) to test the flow uniformity at different positions of the liquid distributor (30).

3. The current uniformity testing device according to claim 1, characterized in that: Along the arrangement direction of each of the sub-liquid inlets (31), the range where the internal load (10) and the external load (20) are located has a plurality of regions separated by equal lengths, and the internal load (10) is provided in each of the regions.

4. The current uniformity testing device according to claim 1, characterized in that: The internal load (10) includes a first adjusting member for adjusting flow resistance, wherein the first adjusting member is an automatic adjusting member. The flow uniformity testing device also includes a first pressure difference detection member (50), wherein the first pressure difference detection member (50) is connected in parallel with the internal load (10) and is capable of detecting the pressure difference between the two ends of the internal load (10).

5. The current uniformity testing device according to claim 1, characterized in that: The external load (20) comprises a second adjusting member for adjusting flow resistance, and the second adjusting member is a manual adjusting member.

6. The current uniformity testing device according to claim 5, characterized in that: The flow uniformity testing device further comprises a second pressure differential detection member (60), the second pressure differential detection member (60) being connected in parallel with the liquid separator (30), the liquid separator (30) and the second pressure differential detection member (60) being both detachably connected to the external load (20), and the external load (20) being selectively arranged on the liquid separator (30) or connected in parallel to both ends of the second pressure differential detection member (60).

7. The current uniformity testing device according to claim 1, characterized in that: The water circulation component (70) comprises a liquid supply channel (71) and a liquid return channel (72). The liquid supply channel (71) is connected to the liquid inlet (33) of the liquid separator (30) and supplies liquid to the liquid separator (30). The cooling liquid is diverted from the liquid inlet (33) to each of the sub-liquid inlets (31). The liquid return channel (72) is connected to the liquid outlet (34) of the liquid separator (30) and returns liquid to the liquid separator (30). After passing through the internal load (10) and the external load (20), the cooling liquid is collected from the sub-liquid outlets (32) to the liquid outlet (34) and flows into the liquid return channel (72).

8. The current uniformity testing device according to claim 7, characterized in that: The water circulation component (70) further includes: a first control member (73), the first control member (73) being arranged in the liquid supply channel (71) and being used to adjust the flow rate of the liquid supply channel (71); a first pressure detecting member (74), the first pressure detecting member (74) being located in the liquid supply channel (71) and being used to detect the pressure of the liquid supply channel (71); a second pressure detecting member (75), the second pressure detecting member (75) being located in the liquid return channel (72) and being used to detect the pressure of the liquid return channel (72); A third regulating member (76), the two ends of which are respectively connected to the liquid supply channel (71) and the liquid return channel (72), and are arranged in parallel with the liquid distributor (30). The third regulating member (76) is used to regulate the flow of the liquid distributor (30) and to relieve pressure when the flow of the liquid supply channel (71) exceeds a threshold value.

9. The current uniformity testing device according to claim 7, characterized in that: The water circulation component (70) further includes: a second flow detection member (77), the second flow detection member (77) being located in the liquid supply channel (71) and being used to detect the flow of the liquid supply channel (71); A third flow detection member (78) is located between the liquid supply channel (71) and the liquid inlet (33) or between the liquid return channel (72) and the liquid outlet (34), and is used to detect the flow rate at the liquid inlet (33) or the flow rate at the liquid outlet (34).

10. The current uniformity testing device according to claim 1, characterized in that: Along the arrangement direction of each of the sub-liquid inlets (31), the range where the internal load (10) and the external load (20) are located has a plurality of regions separated by equal lengths, and the internal load (10) is provided in each of the regions; The external load (20) includes a second adjustment member for adjusting the flow resistance, the second adjustment member is a manual adjustment member, the flow uniformity testing device also includes a second pressure difference detection member (60), the second pressure difference detection member (60) is connected in parallel with the liquid distributor (30), the external load (20) is detachably connected to the liquid distributor (30) and the second pressure difference detection member (60), and can be selectively arranged on the liquid distributor (30) or connected in parallel to both ends of the second pressure difference detection member (60); The water circulation component (70) includes a liquid supply channel (71), a liquid return channel (72), a first control member (73), a first pressure detection member (74), a second pressure detection member (75), and a third adjustment member (76). The liquid distributor (30) has a liquid inlet (33) and a liquid outlet (34). The liquid supply channel (71) is connected to the liquid inlet (33) of the liquid distributor (30) and supplies liquid to the liquid distributor (30). The cooling liquid is diverted from the liquid inlet (33) to each of the sub-liquid inlets (31). The liquid return channel (72) is connected to the liquid outlet (34) of the liquid distributor (30) and returns liquid to the liquid distributor (30). After passing through the internal load (10) and the external load (20), the cooling liquid is collected from the sub-liquid outlets (32) to the liquid outlet (34) and flows into the liquid return channel (72). The flow uniformity testing device further comprises a shutoff valve (79) and a water quality detection assembly (80). A shutoff valve (79) for opening and closing is provided between the liquid inlet (33) and the liquid supply channel (71), and between the second pressure difference detection element (60) and the liquid supply channel (71). The water quality detection assembly (80) is connected to the liquid separator (30) and performs water quality detection.

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