Testing device and testing method for in-situ monitoring compatibility of immersed cooling liquid and server

Abstract

The invention provides an in-situ monitoring immersed cooling liquid and server compatibility testing device and testing method. The device comprises an inner-layer shell, a server host, a cooling liquid circulation module, a ventilation module, a temperature control module, an electrical property sensor module, a data acquisition module and a control module. The temperature control module monitors and adjusts the temperature of the cooling liquid in real time, the test time is remarkably shortened, and the test efficiency is improved; the cooling liquid circulation, ventilation and temperature control module highly reduces the real service environment of the cooling liquid and the server host; the server host is used as a tested object and a control center and is responsible for automation of data acquisition, processing, display, recording and control, so that the automation degree is higher; a temperature measuring element and an electrical performance sensor in the temperature control module monitor the temperature and the electrical performance of the cooling liquid in real time and feed back data in time, so that problems can be found quickly and timely, meanwhile, the appearance state of the server host is observed, and the compatibility of the cooling liquid and the server is evaluated comprehensively.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat dissipation and cooling of data centers, and in particular relates to a device and method for testing the compatibility of an immersion coolant and a server in situ. Background Art

[0002] In recent years, with the development of technologies such as artificial intelligence and next-generation communications, the demand for data distribution, storage, and computing has increased dramatically, leading to increasingly higher power requirements for data center server chips. Traditional data center air cooling primarily uses air conditioning to lower the ambient temperature of the entire data center, but cannot directly dissipate heat from heat-generating components. This results in low cooling efficiency and high energy consumption, making air cooling difficult to meet the cooling and energy conservation needs of current high-power servers. Immersion cooling technology, which directly contacts the server's heat-generating components, not only provides higher cooling efficiency but also significantly reduces data center energy consumption, making it a popular choice for data centers.

[0003] Immersion cooling involves submerging servers in coolant for extended periods. Currently, the main coolant types used include hydrocarbons, esters, silicones, and fluorides. However, server components are complex systems composed of a variety of polymer materials (such as plastics, rubbers, adhesives, fibers, and coatings) and metals. Poor compatibility between the coolant and a particular material in the server can cause server device failure, damage to the device's appearance, or degradation of the coolant's insulation performance, leading to incomplete signal transmission and other adverse effects. Therefore, compatibility testing between coolant and server is a critical task in the practical application of immersion cooling technology.

[0004] Currently, compatibility testing of coolants and servers primarily relies on long-term, real-world monitoring of the coolant during operation in data centers. Due to the relatively low service temperature of coolants (less than 50°C), it takes a long time to detect compatibility issues between the coolant and the server. To accelerate compatibility testing, some technicians immerse the server in coolant and then heat it in a constant temperature cabinet, thereby accelerating the detection of compatibility issues. However, due to the large size of the server, the required constant temperature cabinet is large, resulting in a large investment in equipment and space requirements. Furthermore, immersing the server in coolant and then heating it in a constant temperature cabinet fails to simulate the actual coolant circulation process during service, potentially leading to test errors. Furthermore, due to the sealing requirements of the constant temperature cabinet, power cannot be supplied to the test server and communication cannot be established. This makes it difficult to observe the server's status in real time and detect functional failures in a timely manner. Furthermore, it is impossible to monitor changes in the coolant's physical, chemical, and electrical properties in real time, making it difficult to determine the compatibility duration and performance changes of different coolants with the server.

[0005] Therefore, in view of the shortcomings of existing immersion liquid cooling server technology, such as coolant compatibility testing taking a long time, requiring large capital investment, deviating from actual working conditions, and being unable to monitor the server and coolant status in real time, it is necessary to provide an improved technical solution to address the above-mentioned shortcomings of the existing technology. Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an in-situ monitoring device and method for testing the compatibility of immersion coolant and server, which is used to solve the problems in the prior art of testing the compatibility of coolant and server, such as the long time consumption, high test equipment cost, large space occupation, deviation from actual working conditions, and inability to monitor the status of server and coolant in real time.

[0007] To achieve the above-mentioned and other related purposes, the present invention provides an in-situ monitoring device for testing the compatibility of immersion coolant and server, characterized in that the testing device comprises:

[0008] The housing comprises an inner shell and a base, wherein the bottom end of the inner shell is fixed to the base, the inner shell comprises an inner shell body and a top cover, the top end of the inner shell body is open, the top end of the inner shell body is detachably connected to the top cover, and the inner shell body is filled with coolant;

[0009] A server module, the server module including a server host and a display, the server host being suspended inside the inner shell and immersed in the coolant, the display being disposed outside the shell and connected to the server host via a display signal line;

[0010] A coolant circulation module, comprising a first pipeline and a liquid pump, wherein the input end of the first pipeline is connected to the coolant at the bottom of the server host, and the output end of the first pipeline is connected to the top of the server host. The liquid pump is disposed on the first pipeline and is used to pump the coolant at the bottom of the server host to the top of the server host to accelerate coolant circulation;

[0011] A ventilation module, the ventilation module comprising an air source, a ventilation pipeline, and an air pump, wherein the input end of the ventilation pipeline is connected to the air source, the output end of the ventilation pipeline is connected to the coolant at the bottom of the server mainframe, and the air pump is arranged on the ventilation pipeline for passing the gas provided by the air source into the coolant at the bottom of the server mainframe;

[0012] A temperature control module, comprising a temperature control element and a temperature measuring element. The temperature control element is used to control the temperature of the coolant, and the temperature measuring element is used to collect the temperature of the coolant.

[0013] An electrical performance sensor module, the electrical performance sensor module including an electrical performance sensor, the electrical performance sensor being mounted on a side wall of the inner shell, with a measuring end of the electrical performance sensor in contact with the coolant, for real-time monitoring of the electrical performance of the coolant during the compatibility test;

[0014] A signal acquisition control unit includes a data acquisition module and a control module. The data acquisition module is communicatively connected to the server host and is also electrically connected to the temperature measuring element and the electrical performance sensor. The control module is electrically connected to the temperature control element, the liquid pump and the air pump, and the control module and the data acquisition module realize two-way data exchange.

[0015] Preferably, the shell further includes an outer shell, and the outer shell is nested outside the inner shell.

[0016] Preferably, a size conversion module is provided on the inner wall of the inner shell body, and the size conversion module is used to adjust the accommodation space inside the inner shell body.

[0017] Preferably, the coolant circulation module further includes a filter, a flow meter and a flow regulating valve sequentially arranged on the first pipeline, the filter is located at the front end of the liquid pump, and the flow meter and the flow regulating valve are located at the rear end of the liquid pump.

[0018] Preferably, a spray pipe is installed at the output end of the first pipeline, the spray pipe is arranged at the top of the server host, and a plurality of spray ports are opened on the spray pipe.

[0019] Preferably, a check valve is further provided on the ventilation pipeline, and the check valve is located at the output end of the air pump to prevent the coolant from flowing back into the air pump.

[0020] Preferably, the electrical property sensor is an equidistant electrode, and the equidistant electrodes are partially isolated by insulating material to form an isolated portion and a non-isolated portion. The non-isolated portion is provided with a plurality of flow holes for circulating the coolant.

[0021] Preferably, the equidistant electrodes include an outer electrode and an inner electrode, the outer electrode and the inner electrode are coaxial and equidistantly sleeved together, the outer electrode is threadedly connected to the inner shell body, and the non-isolated portion is in full contact with the coolant in the inner shell body, a limiting boss is provided circumferentially of the outer electrode, the limiting boss is used to limit the position of the equidistant electrodes entering the inner shell body, and a sealing ring is further provided at one end of the limiting boss adjacent to the inner shell body.

[0022] Preferably, the electrical performance sensor module further includes an electrical performance testing device, the output end of the electrical performance sensor is connected to the electrical performance testing device via a wire, and the electrical performance testing device is used for in-situ online testing of the electrical performance of the coolant.

[0023] The present invention also provides a method for in-situ monitoring of compatibility testing between immersion coolant and server, the specific testing method comprising the following steps:

[0024] Providing the above-mentioned in-situ monitoring immersion coolant and server compatibility test device, and installing the test control software on the server host;

[0025] Setting the target temperature of the coolant, the monitoring time interval, the flow rate of the coolant circulation module, and the flow rate of the ventilation module through the test control software;

[0026] After the coolant has been allowed to sit for a while, start the liquid pump in the coolant circulation module and the air pump in the ventilation module according to the set parameters. Continuously monitor the coolant temperature and electrical properties, collect data at the set monitoring interval, and visually observe the appearance of the server host.

[0027] If a server failure or significant degradation in coolant performance occurs during the test, it indicates compatibility issues between the coolant and the server. Shut down the liquid pump of the coolant circulation module and the air pump of the ventilation module, remove the data storage hard drive from the server, and read the experimental data from the hard drive to determine the compatibility failure duration.

[0028] If the server host continues to operate normally after the set test duration and there is no obvious decline in coolant performance, it indicates that the coolant is compatible with the server host.

[0029] As described above, the in-situ monitoring immersion coolant and server compatibility testing device and testing method of the present invention have the following beneficial effects:

[0030] The present invention provides an in-situ monitoring immersion coolant and server compatibility test device that can accelerate testing, is low-cost, and can simulate the actual service conditions of the coolant and the server. The device includes an inner shell, a server host, a coolant circulation module, a ventilation module, a temperature control module, an electrical performance sensor module, a data acquisition module, and a control module. The temperature control module monitors and adjusts the temperature of the coolant in real time, which significantly shortens the test time and improves the test efficiency. The coolant circulation module, the ventilation module, and the temperature control module are combined to highly restore the actual service environment of the coolant and the server host, so that the test results have more practical reference value. The size conversion module is provided in the inner shell body to adjust the internal space of the inner shell body. The system is compatible with server hosts of different sizes and has a wide range of applications. The server host serves not only as the tested object but also as the control center of the entire test device, responsible for data acquisition, processing, display, recording and automation of control, making the test device more automated. The temperature measuring element and electrical performance sensor in the temperature control module monitor the temperature and electrical properties of the coolant in real time and provide timely feedback to facilitate rapid and timely detection of problems. The system can also simultaneously monitor the physical and chemical properties of the coolant and the appearance of the server host, thereby comprehensively evaluating the compatibility of the coolant with the server. This is of great significance to the research and development and practical application of immersion coolants for data centers and materials for servers. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is a structural schematic diagram of an in-situ monitoring device for testing compatibility between immersion coolant and server in a specific embodiment of the present invention.

[0032] Figure 2 It is a schematic structural diagram of a shell in a specific embodiment of the present invention.

[0033] Figure 3 Shown is a structural schematic diagram of a size conversion module in a specific embodiment of the present invention.

[0034] Figure 4 Shown is a structural schematic diagram of another size conversion module in a specific embodiment of the present invention.

[0035] Figure 5 Shown is a schematic diagram of the working principle of an in-situ monitoring device for testing the compatibility of immersion coolant and server in a specific embodiment of the present invention.

[0036] Figure 6 Shown is a structural cross-sectional view of an electrical property sensor in a specific embodiment of the present invention.

[0037] Figure 7 Shown are Nyquist plots of the electrochemical impedance of the coolant obtained by in-situ online testing at different time periods in a specific embodiment of the present invention.

[0038] Component number description

[0039] 101 inner shell

[0040] 1011 inner shell body

[0041] 1012 Top Cover

[0042] 1013 Size Conversion Module

[0043] 102 base

[0044] 103 outer shell

[0045] 104 Support Structure

[0046] 201 Server Host

[0047] 202 Display

[0048] 203 power cord

[0049] 204 data transmission line

[0050] 205 display signal line

[0051] 301 First Pipeline

[0052] 302 Liquid Pump

[0053] 303 filter

[0054] 304 flow meter

[0055] 305 flow control valve

[0056] 306 spray pipe

[0057] 3061 Spray port

[0058] 401 Gas Source

[0059] 402 ventilation line

[0060] 403 Air Pump

[0061] 404 check valve

[0062] 405 gas distribution pipe

[0063] 4051 Gas Outlet

[0064] 501 temperature control element

[0065] 5021 upper thermocouple

[0066] 5022 lower thermocouple

[0067] 600 Electrical Performance Sensor

[0068] 601 outer electrode

[0069] 602 inner electrode

[0070] 603 Insulation Materials

[0071] 604 thread

[0072] 605 limiting boss

[0073] 606 sealing ring

[0074] 607 Flow hole

[0075] 701 Data Acquisition Module

[0076] 702 Control Module DETAILED DESCRIPTION

[0077] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0078] Before further describing the specific embodiments of the present invention, it should be understood that the scope of the present invention is not limited to the specific embodiments described below. It should also be understood that the terminology used in the examples is intended to describe specific embodiments and is not intended to limit the scope of the present invention. The experimental procedures in the following examples, where specific conditions are not specified, were generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0079] When the embodiments provide numerical ranges, it should be understood that, unless otherwise specified in the present invention, both endpoints of each numerical range and any numerical value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those generally understood by those skilled in the art. In addition to the specific methods, equipment, and materials used in the embodiments, according to the understanding of the prior art by those skilled in the art and the description of the present invention, any methods, equipment, and materials of the prior art similar or equivalent to the methods, equipment, and materials described in the embodiments of the present invention may also be used to implement the present invention.

[0080] See also Figures 1 to 7It should be noted that the diagrams provided in this embodiment are merely schematic illustrations of the basic concept of the present invention. Therefore, the diagrams only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0081] Based on the shortcomings of the existing technology of immersion liquid cooling server coolant compatibility testing, which is time-consuming, requires large capital investment, deviates from the actual working conditions, and cannot monitor the status of the server and coolant in real time, the present invention provides an in-situ monitoring immersion coolant and server compatibility testing device that can accelerate testing, is low-cost, simulates the actual working conditions of the coolant, and realizes real-time observation and monitoring of the server and coolant status. The device is of great significance for the development, research and practical application of data center immersion coolants and server materials.

[0082] See Figure 1The present invention provides an in-situ monitoring device for testing the compatibility of immersion coolant and server, the testing device comprising a shell, a server module, a coolant circulation module, a ventilation module, a temperature control module, a sensor module and a signal acquisition and control unit; wherein the shell comprises an inner shell 101 and a base 102, the bottom end of the inner shell 101 is fixed on the base 102, the inner shell 101 comprises an inner shell body 1011 and a top cover 1012, the top end of the inner shell body 1011 is open, the top end of the inner shell body 1011 is detachably connected to the top cover 1012, and the inner shell body 1011 is filled with coolant; the server module comprises a server The server host 201 and the display 202 are suspended inside the inner shell 101 and immersed in the coolant. The display 202 is arranged outside the shell and is connected to the server host 201 through a display signal line 205. The coolant circulation module includes a first pipeline 301 and a liquid pump 302. The input end of the first pipeline 301 is connected to the coolant at the bottom of the server host 201, and the output end of the first pipeline 301 is connected to the top of the server host 201. The liquid pump 302 is arranged on the first pipeline 301 for pumping the coolant at the bottom of the server host 201 to the server host. 201, accelerating the circulation of the coolant; the ventilation module includes an air source 401, a ventilation pipe 402 and an air pump 403, the input end of the ventilation pipe 402 is connected to the air source 401, and the output end of the ventilation pipe 402 is connected to the coolant at the bottom of the server host 201, and the air pump 403 is arranged on the ventilation pipe 402, for passing the gas provided by the air source 401 into the coolant at the bottom of the server host 201; the temperature control module includes a temperature control element 501 and a temperature measuring element, the temperature control element 501 is used to control the temperature of the coolant, and the temperature measuring element is used to collect the temperature of the coolant; the electrical performance sensor 600 module includes The electrical performance sensor 600 is installed on the side wall of the inner shell 101, and the measuring end of the electrical performance sensor 600 is in contact with the coolant, and is used to monitor the electrical properties of the coolant in real time during the compatibility test; the signal acquisition control unit includes a data acquisition module 701 and a control module 702, the data acquisition module 701 is communicatively connected to the server host 201, and is also electrically connected to the temperature measuring element and the electrical performance sensor 600; the control module 702 is electrically connected to the temperature control element 501, the liquid pump 302 and the air pump 403, and the control module 702 and the data acquisition module 701 realize two-way data exchange.

[0083] Specifically, openings are provided on the sides of the inner shell 101 and above the top cover 1012 for passage of server-related cables or pipes. These openings can be sealed with sealing material. There are no specific restrictions on the openings, as long as they meet practical application requirements. Furthermore, the inner shell body 1011 is made of an oil-resistant, high-temperature-resistant material and is partially or entirely transparent. The top of the inner shell body 1011 is detachably connected to the top cover 1012, and the two can be sealed or unsealed, depending on the coolant. If the coolant is a phase-change coolant, sealing is required. If the coolant is not prone to phase change, sealing is not required.

[0084] The server module also includes a power cord 203 and a data transmission line 204. The power cord 203 is connected to the server host 201. The server host 201 immersed in the coolant is both the tested object and provides data acquisition, display and control functions. The server host 201 communicates with the data acquisition module 701 through the data transmission line 204, wherein the data transmission line 204 includes USB, serial communication, and network port control cables; the server host 201 also has software, storage hard disk, etc. installed.

[0085] The main function of the coolant circulation module is to pump the coolant from the bottom to the top of the server host 201, thereby accelerating the circulation of the coolant and improving the uniformity of the internal temperature field; the ventilation module mainly allows the gas provided by the gas source 401 to enter the coolant at the bottom of the server host 201, thereby stirring the coolant, improving the uniformity of the coolant temperature, and creating special working conditions such as high humidity and high salinity, thereby simulating the compatibility of the server host 201 and the coolant under different environments.

[0086] The temperature control element 501 in the temperature control module is used to control the temperature of the coolant. The temperature control element 501 includes a heat source or a cold source. The heat output of the heat source or the cooling capacity of the cold source must be able to control the temperature of the coolant within a certain range. The data acquisition module 701 is electrically connected to the temperature measuring element. The data acquisition module 701 is used to collect the temperature data of the coolant measured by the temperature measuring element and transmit the data to the control module 702. The control module 702 is electrically connected to the temperature control element 501. The control module 702 controls the output power of the heat source or the cold source by comparing the difference between the average temperature of the coolant of the data acquisition module 701 and the set temperature, thereby achieving control of the temperature of the coolant; wherein, the heat source includes one of the server host 201, a heating rod, a steam pipe, and a PTC heating plate, and the cold source includes one of an immersion refrigeration device, a circulating water circuit, an external fan, and a low-temperature gas.

[0087] In the specific embodiment of the present invention, see Figure 1The temperature control element 501 is a PTC heating plate, which is arranged in the coolant at the bottom of the server host 201. The temperature measuring element includes an upper thermocouple 5021 and a lower thermocouple 5022. The upper thermocouple 5021 is located in the coolant at the top of the server host 201, and the lower thermocouple 5022 is located in the coolant at the bottom of the server host 201. The upper thermocouple 5021 is used to collect the coolant temperature at the top of the server host 201, and the lower thermocouple 5022 is used to collect the coolant temperature at the bottom of the server host 201. The lead end of the temperature measuring element is connected to the data acquisition module 701, and the data acquisition module 701 is connected to the control module 702. The temperature measuring element collects the temperature change of the coolant and transmits the temperature signal to the control module 702 through the data acquisition module 701. The control module 702 adjusts the power of the temperature control element 501 (PTC heating plate) according to the collected temperature signal to achieve temperature control of the coolant.

[0088] Specifically, the electrical performance sensor 600 is used to monitor the electrical performance parameters of the coolant in real time during the compatibility test, where the electrical performance parameters include the conductivity, resistivity, dielectric constant, moisture content, viscosity, etc. of the coolant. These parameters reflect the physical and chemical states of the coolant, and no further restrictions are made here. Of course, the measuring device in the present invention may also include other sensor modules, which will not be described in detail here.

[0089] Specifically, in a specific embodiment of the present invention, a temperature measuring element monitors the temperature change data of the coolant in real time. The data acquisition module 701 is electrically connected to the temperature measuring element and is used to collect the temperature change data monitored by the temperature measuring element and feed the collected signal back to the control module 702. The control module 702 adjusts the power of the temperature control element 501 to control the temperature of the coolant. The electrical performance sensor 600 monitors the electrical performance parameters of the coolant in real time. The data acquisition module 701 is electrically connected to the electrical performance sensor 600 and is used to collect the electrical performance data monitored by the electrical performance sensor 600. The control module 702 controls the temperature control element 501, the liquid pump 302, and the air pump 403 through circuits. The control module 702 can also transmit signals to the data acquisition module 701. The data acquisition module 701 and the server host 201 use a communication protocol to collect and process relevant signals. The parameters are set through dedicated software to achieve programmatic control of functions such as temperature control, coolant circulation, ventilation, and coolant performance testing. As an example, the housing also includes an outer housing 103, which is nested outside the inner housing 101.

[0090] For details, see Figure 2The outer shell 103 is nested outside the inner shell 101 and completely covers the inner shell 101 inside, mainly playing the role of keeping the inner shell 101 warm and isolating dust, and the outer shell 103 is a transparent shell; preferably, the bottom end of the outer shell 103 is open and is buckled with the base 102, and the outer shell 103 is made of acrylic material; in addition, the outer shell 103 and the inner shell 101 are correspondingly provided with holes for related cables and pipes to pass through. The openings or holes are only partially shown in the figure, and there are no excessive restrictions on the position and size of the openings or holes, as long as they can meet the actual application.

[0091] In a specific embodiment of the present invention, the area of the base 102 is larger than the projected area of the inner shell 101 on the plane, so as to improve the stability and structural strength of the shell; Figure 2 As shown, four symmetrically distributed support structures 104 are provided between the inner shell body 1011 and the base 102. Two support structures 104 are provided on the opposite side walls of the inner shell body 1011. The support structures 104 are in the shape of a right-angled fan, with one right-angled side abutting the outer wall of the inner shell body 1011 and the other right-angled side abutting the upper surface of the base 102 to enhance the structural strength of the inner shell body 1011. Preferably, the support structures 104 are made of acrylic. In addition, holes are also provided on the support structures 104 for the passage of related cables or pipes. There is no special restriction here, as long as the actual use requirements are met. In a specific embodiment of the present invention, the liquid pump 302, the air pump 403, the data acquisition module 701 and the control module 702 can all be fixed to the base 102 to achieve a high degree of overall integration.

[0092] As an example, the inner wall of the inner shell body 1011 is provided with a size conversion module 1013 , and the size conversion module 1013 is used to adjust the accommodation space inside the inner shell body 1011 .

[0093] Specifically, the size conversion module 1013 is made of oil-resistant and high-temperature resistant material. Preferably, the size conversion module 1013 is made of acrylic material. The shape of the size conversion module 1013 can be adjusted according to actual needs to adapt to server hosts 201 of different sizes. There are no excessive restrictions on the shape of the size conversion module 1013.

[0094] See Figure 2 The top and side walls of the inner shell body 1011 form an inverted L-shaped boss, and the size conversion module 1013 is fixed on the boss. The space size inside the inner shell 101 is adjusted according to the shape of the size conversion module 1013.

[0095] See also Figure 3This is a structural schematic diagram of a size conversion module 1013. The size conversion module 1013 is in an inverted L-shape, with the inner surface of its upper part placed on the boss at the top of the inner shell body 1011, the inner side surface of the lower part tightly attached to the inner wall of the inner shell body 1011, and the raised part on the side of the server host 201 in contact with the outer surface of the upper part of the size conversion module 1013, thereby realizing the suspension of the server host 201 in the inner shell 101.

[0096] See Figure 4 This is a structural schematic diagram of another size conversion module 1013. The size conversion module 1013 is Z-shaped, with the inner surface of its upper part placed on the boss at the top of the inner shell body 1011, the inner side surface of the middle part is tightly attached to the inner wall of the inner shell body 1011, and the upper surface of the lower part can be used to support the server host 201, thereby realizing the placement of the short server host 201 in the inner shell body 1011.

[0097] As an example, the coolant circulation module also includes a filter 303, a flow meter 304 and a flow regulating valve 305 which are sequentially arranged on the first pipeline 301, the filter 303 is located at the front end of the liquid pump 302, and the flow meter 304 and the flow regulating valve 305 are located at the rear end of the liquid pump 302.

[0098] Specifically, the main function of the coolant circulation module is to pump the coolant from the bottom to the top of the server host 201, thereby accelerating the circulation of the coolant and improving the uniformity of the internal temperature field; the filter 303 is set at the front end of the liquid pump 302 to ensure the cleanliness of the coolant. The coolant may carry some impurities during the circulation process, and the filter 303 filters out the impurities to prevent blockage; the flow meter 304 is used to measure the flow of the coolant, and the flow regulating valve 305 is used to control the circulation flow of the coolant.

[0099] In a specific embodiment of the present invention, the flow of the coolant circulation module can be manually controlled by the flow regulating valve 305, and can also be adjusted by the control module 702. Since the control module 702 is electrically connected to the liquid pump 302, the control module 702 can adjust the output power of the liquid pump 302 according to the data instructions transmitted by the data acquisition module 701, thereby controlling the delivery flow of the coolant.

[0100] As an example, a spray pipe 306 is installed at the output end of the first pipeline 301 . The spray pipe 306 is disposed at the top of the server host 201 , and a plurality of spray ports 3061 are provided on the spray pipe 306 .

[0101] Specifically, a spray pipe 306 is installed at the output end of the first pipeline 301. The spray pipe 306 is arranged at the top of the inner shell body 1011 and is located at the top of the server host 201. The coolant passes through multiple spray ports 3061 of the spray pipe 306, so that the coolant is more evenly dispersed at the top of the server host 201; preferably, the multiple spray ports 3061 are evenly distributed on the spray pipe 306, and the spray pipe 306 is arranged parallel to the top of the server host 201.

[0102] In a specific embodiment of the present invention, the periphery of the first pipeline 301 is also wrapped with a heat-insulating material to reduce energy loss. The heat-insulating material can be heat-insulating cotton, and of course other materials can also be used.

[0103] As an example, a check valve 404 is further provided on the ventilation pipeline 402 . The check valve 404 is located at the output end of the air pump 403 and is used to prevent the coolant from flowing back into the air pump 403 .

[0104] Specifically, the ventilation module mainly allows the gas provided in the gas source 401 to enter the coolant at the bottom of the server host 201, thereby stirring the coolant, improving the temperature uniformity of the coolant, and creating special working conditions such as high humidity and high salinity, thereby simulating the compatibility of the server host 201 and the coolant under different environments; wherein, the gas source 401 includes air, oxygen, air containing water, or air containing salt mist, etc.

[0105] Furthermore, the output end of ventilation line 402 is connected to a gas distribution pipe 405, which is located parallel to the coolant at the bottom of server 201. Multiple gas outlets 4051 are evenly distributed throughout gas distribution pipe 405, ensuring uniform gas flow into the coolant. If gas source 401 is oxygen, oxygen is pumped through ventilation line 402 by air pump 403 at a set flow rate into gas distribution pipe 405, ensuring even distribution of oxygen into the coolant. This simulates the compatibility test of the coolant with server 201 under a long-term, high-temperature, oxidizing environment.

[0106] As an example, the electrical property sensor 600 is an equidistant electrode, which is partially isolated by an insulating material 603 to form an isolated portion and a non-isolated portion. The non-isolated portion is provided with a plurality of flow holes 607 for the circulation of coolant.

[0107] Specifically, the electrodes of the equidistant electrodes are arranged at equal distances, which can ensure uniform electric field distribution or consistency of signal acquisition. The equidistant electrodes can be equidistant electrodes composed of two parallel plates, or of course, equidistant electrodes composed of two coaxial circular tubes. The equidistant electrodes are installed on the side wall of the inner shell 101, and the non-isolated part is the measuring end. The measuring end is in contact with the coolant for real-time monitoring of the electrical properties of the coolant during the compatibility test.

[0108] As an example, the equidistant electrodes include an outer electrode 601 and an inner electrode 602. The outer electrode 601 and the inner electrode 602 are coaxial and equidistantly sleeved together. The outer electrode 601 is threadedly connected to the inner shell body 1011, and the non-isolated portion is in complete contact with the coolant in the inner shell body 1011. A limiting boss 605 is circumferentially provided on the outer electrode 601. The limiting boss 605 is used to limit the position of the equidistant electrodes entering the inner shell body 1011. A sealing ring 606 is also provided at one end of the limiting boss 605 adjacent to the inner shell body 1011.

[0109] For details, see Figure 6 The outer electrode 601 and the inner electrode 602 are both metal circular tubes. The two metal circular tubes are coaxially and equidistantly sleeved together to form equidistant electrodes. An isolation portion and a non-isolation portion are formed between the outer electrode 601 and the inner electrode 602. The non-isolation portion is arranged in the inner shell body 1011 and is in full contact with the coolant. The coolant flows in from the multiple flow holes 607 opened in the outer electrode 601, so that the coolant can fully contact both the outer electrode 601 and the inner electrode 602. The non-isolation portion serves as the measuring end of the electrical performance sensor 600, directly contacts the coolant and is used to measure the electrical properties of the coolant during the compatibility test.

[0110] See also Figure 6 The outer electrode 601 is provided with a thread 604 in the circumferential direction, and the outer electrode 601 is threadedly connected to the threaded hole on the side wall of the inner shell body 1011, and it is necessary to ensure that at least the non-isolated part is completely in contact with the coolant. Of course, part of the isolation part can also be provided in the inner shell body 1011, and there are no too many restrictions here.

[0111] Specifically, the limiting boss 605 is arranged adjacent to the thread 604, which is used to limit the position of the electrical performance sensor 600 and the inner shell body 1011 to be threadedly connected and enter the inner shell body 1011, and a sealing ring 606 is also provided on the limiting boss 605 to achieve sealing between the electrical performance sensor 600 and the inner shell body 1011. The sealing ring 606 is preferably a rubber ring.

[0112] As an example, the electrical performance sensor 600 module further includes an electrical performance testing device. The output end of the electrical performance sensor 600 is connected to the electrical performance testing device via a wire. The electrical performance testing device is used to perform in-situ online testing of the electrical performance of the coolant.

[0113] Specifically, in actual applications, the output end of the electrical performance sensor 600 can be connected to the terminal block via a wire, and the electrical performance test equipment can be directly connected to the terminal block. The electrical performance test equipment includes a withstand voltage tester and an impedance tester. The withstand voltage tester is connected to the terminal block of the electrical performance sensor 600 via a wire to test the breakdown voltage of the coolant; the impedance tester is connected to the terminal block of the electrical performance sensor 600 via a wire to test the impedance value of the coolant. The withstand voltage tester can use a digital bridge, and the impedance tester can use a safety meter. In a specific embodiment of the present invention, the digital bridge is the Tonghui TH2827C precision LCR digital bridge, and the safety meter is the GPT-9804 safety meter.

[0114] In addition, the present invention also provides an in-situ monitoring method for testing the compatibility of immersion coolant with a server, comprising the following steps:

[0115] Provide the above-mentioned in-situ monitoring immersion coolant and server compatibility test device, and install test control software on the server host 201;

[0116] Setting the target temperature of the coolant, the monitoring time interval, the flow rate of the coolant circulation module, and the flow rate of the ventilation module through the test control software;

[0117] After the coolant has been allowed to stand for a period of time, the liquid pump 302 in the coolant circulation module and the air pump 403 in the ventilation module are started according to the set parameters. The temperature and electrical properties of the coolant are continuously monitored, and data is collected at the set monitoring time interval. At the same time, the appearance of the server host 201 is visually observed.

[0118] If the server host 201 fails or the coolant performance significantly degrades during the test, it indicates that there is a compatibility problem between the coolant and the server host 201. The liquid pump 302 of the coolant circulation module and the air pump 403 of the ventilation module are turned off, the data storage hard disk in the server host 201 is removed, and the experimental data in the data storage hard disk is read to obtain the compatibility failure duration;

[0119] If the server host 201 is still operating normally and the performance of the coolant has not been significantly reduced after the set test time, it indicates that the coolant is compatible with the server host 201.

[0120] Specifically, first, the test preparation is carried out, the server host 201 to be tested is placed in the inner shell body 1011, and it is ensured that the coolant completely immerses the server host 201. The communication connection between the server host 201 and each module is established through the data transmission line 204 to ensure that the communication connection is stable and the data transmission is correct. Then, the test control software is installed. The test control software is developed based on C language using LabWindows / CVI software in a Windows environment. Ensure that the software is installed correctly and can run normally. Then, the outer shell 103 is nested outside the inner shell 101; then, the parameters are set. The target temperature of the coolant is set through the test control software to ensure that the coolant maintains a constant temperature during the test, set the monitoring time interval, set the flow rate of the coolant circulation module and the flow rate of the ventilation module; then, the coolant is left to stand for a period of time before the test to ensure that the cooling temperature and performance reach a stable state, and the liquid pump 302 in the coolant circulation module and the liquid pump 303 in the ventilation module are started according to the set parameters. The air pump 403 continuously monitors the temperature and electrical properties of the coolant and collects data at the set monitoring time interval. The collected data is displayed in real time on the interface of the test control software and automatically recorded in the data storage hard disk. At the same time, during the test, the appearance of the server host 201 is visually observed. If any abnormality is found, the test is stopped immediately. If a server host 201 fails during the test, it means that there is a compatibility problem between the coolant and the server host 201. The liquid pump 302 of the coolant circulation module and the air pump 403 of the ventilation module are turned off, the data storage hard disk in the server host 201 is taken out, and the experimental data in the data storage hard disk is read to obtain the compatibility failure time. If the coolant performance decreases significantly during the test, it means that there is a compatibility problem between the coolant and the server host 201. If the set test time is reached and the server host 201 is still operating normally and the coolant performance has not decreased significantly, it indicates that the coolant and the server host 201 are well compatible. Finally, data recording and analysis are performed.

[0121] See also Figure 5This is a schematic diagram of the working principle of the in-situ monitoring device for immersion coolant and server compatibility testing. Server host 201 serves not only as the tested object but also as the control center of the entire test device, responsible for data acquisition, processing, display, recording, and control. The S485 serial communication protocol is used to enable communication between the digital bridge, safety instrument, and server host 201. The digital bridge and safety instrument are connected to the electrical performance sensor 600 via relays. The electrical signals monitored by the electrical performance sensor 600 are transmitted to the digital bridge and safety instrument via relays. The digital bridge and safety instrument then transmit the measured data to server host 201 via the S485 serial communication protocol. The S485 serial communication protocol also enables communication between the liquid pump 302 in the coolant circulation module and the air pump 403 in the ventilation module and server host 201, thereby controlling the coolant circulation flow rate and the amount of gas introduced into the coolant. The PCI bus is used to realize communication between the analog input board and the server host 201. The analog input board is connected to the temperature measuring element to realize A / D conversion and acquisition of the coolant temperature signal. The analog input board transmits the converted digital signal to the server host 201 through the PCI bus; the server host 201 generates a control signal based on the temperature measurement data, and the control signal is D / A converted through the analog output board. The analog output board transmits the converted analog signal to the power regulator through the PCI bus. The power regulator adjusts the power of the temperature control element 501 according to the control signal.

[0122] In the Windows environment, LabWindows / CVI software is used to develop the test control software based on C language. Parameters are input through the interface operation of the test control software to set the target temperature of the coolant, the monitoring time interval, the flow rate of the coolant circulation module and the flow rate of the ventilation module. The temperature, impedance and breakdown voltage data of the coolant are collected through the analog input board and the S485 serial port communication protocol. The collected data are analyzed and processed. The temperature, impedance and breakdown voltage of the coolant are displayed in real time on the interface operation. The collected data are stored in the data storage hard disk. At the same time, a control signal is generated according to the parameter input to adjust the power of the temperature control element 501. When an abnormal situation occurs, an alarm is issued.

[0123] In order to better understand the in-situ monitoring immersion coolant and server compatibility test method of the present invention, it is described below with reference to specific embodiments. It should be noted that these embodiments are merely illustrative and do not limit the present invention in any way.

[0124] In a specific embodiment of the present invention, this embodiment provides an in-situ monitoring method for testing the compatibility of an immersion coolant with a server, comprising the following steps:

[0125] Provided is an in-situ monitoring device for testing the compatibility of immersion coolant and server. The server host 201 to be tested is placed in the inner shell body 1011. Coal-derived synthetic hydrocarbon is used as the coolant to completely immerse the server host 201. Normal communication between each module and the server host 201 is established through data transmission cables. Test control software is installed on the server host 201 to implement functions such as temperature control, signal acquisition, coolant circulation, and ventilation volume control. The outer shell is nested outside the inner shell 101.

[0126] The test control software was used to set the target temperature of the coolant to 80°C, the monitoring interval to 24 hours, the flow rate of the coolant circulation module to 1.0 L / min, and the flow rate of the ventilation module to 0.2 L / min.

[0127] Before the coolant performance test, after standing for 10 minutes, the liquid pump 302 in the coolant circulation module and the air pump 403 in the ventilation module are started according to the set parameters. The temperature and electrical properties of the coolant are continuously monitored, and data is collected at the set monitoring time interval. After the breakdown voltage and impedance test of the coolant are completed, the coolant circulation and ventilation are continued according to the set parameters. During the test, the coolant temperature is continuously monitored, and the coolant electrical performance test is performed at the sampling interval. During the process, the appearance of the server host 201 is visually observed;

[0128] If the server host 201 fails or the coolant performance significantly degrades during the test, the liquid pump 302 of the coolant circulation module and the air pump 403 of the ventilation module are turned off, the data storage hard disk in the server host 201 is removed, and the experimental data in the data storage hard disk is read to obtain the compatibility failure duration;

[0129] If the server host 201 is still operating normally and the performance of the coolant has not been significantly reduced after the set test time, it indicates that the coolant is compatible with the server host 201.

[0130] After 137 days of testing, visual inspection showed that the coolant had slightly yellowed compared to new coolant. All functions of the server host 201 were still normal. During the 137-day test, the coolant's breakdown voltage did not change significantly. Figure 7 The Nyquist plots of the coolant's electrochemical impedance, obtained by in-situ monitoring of the compatibility test between the immersion coolant and the server at different times, show that the coolant's impedance value decreases as the compatibility test progresses, indicating that the coolant's electrical properties have attenuated or changed to a certain extent.

[0131] In summary, the present invention provides an in-situ monitoring immersion coolant and server compatibility test device that can accelerate testing, is low-cost, and can simulate the actual service conditions of the coolant and the server. The device includes an inner shell, a server host, a coolant circulation module, a ventilation module, a temperature control module, an electrical performance sensor module, a data acquisition module, and a control module; the temperature control module monitors and adjusts the temperature of the coolant in real time, which significantly shortens the test time and improves the test efficiency; the coolant circulation module, the ventilation module, and the temperature control module are combined to highly restore the actual service environment of the coolant and the server host, so that the test results have more practical reference value; the size conversion module is set in the inner shell body to adjust the volume inside the inner shell body The nano-space makes it compatible with server hosts of different sizes and has a wide range of applications; the server host serves not only as the tested object, but also as the control center of the entire test device, responsible for the automation of data acquisition, processing, display, recording and control, making the test device more automated; the temperature measuring element and electrical performance sensor in the temperature control module monitor the temperature and electrical properties of the coolant in real time, and provide timely feedback to facilitate the rapid and timely discovery of problems; and it can simultaneously monitor the physical and chemical properties of the coolant, as well as the appearance of the server host, to achieve a comprehensive assessment of the compatibility of the coolant with the server, which is of great significance to the development, research and practical application of immersion coolants for data centers and materials for servers. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0132] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. An in-situ monitoring device for testing the compatibility of immersion coolant with a server, characterized by: The testing device comprises: The housing comprises an inner shell and a base, wherein the bottom end of the inner shell is fixed to the base, the inner shell comprises an inner shell body and a top cover, the top end of the inner shell body is open, the top end of the inner shell body is detachably connected to the top cover, and the inner shell body is filled with coolant; A server module, the server module including a server host and a display, the server host being suspended inside the inner shell and immersed in the coolant, the display being disposed outside the shell and connected to the server host via a display signal line; A coolant circulation module, comprising a first pipeline and a liquid pump, wherein the input end of the first pipeline is connected to the coolant at the bottom of the server host, and the output end of the first pipeline is connected to the top of the server host. The liquid pump is disposed on the first pipeline and is used to pump the coolant at the bottom of the server host to the top of the server host to accelerate coolant circulation; A ventilation module, the ventilation module comprising an air source, a ventilation pipeline, and an air pump, wherein the input end of the ventilation pipeline is connected to the air source, the output end of the ventilation pipeline is connected to the coolant at the bottom of the server mainframe, and the air pump is arranged on the ventilation pipeline for passing the gas provided by the air source into the coolant at the bottom of the server mainframe; A temperature control module, comprising a temperature control element and a temperature measuring element. The temperature control element is used to control the temperature of the coolant, and the temperature measuring element is used to collect the temperature of the coolant. An electrical performance sensor module, the electrical performance sensor module including an electrical performance sensor, the electrical performance sensor being mounted on a side wall of the inner shell, with a measuring end of the electrical performance sensor in contact with the coolant, for real-time monitoring of the electrical performance of the coolant during the compatibility test; A signal acquisition control unit includes a data acquisition module and a control module. The data acquisition module is communicatively connected to the server host and is also electrically connected to the temperature measuring element and the electrical performance sensor. The control module is electrically connected to the temperature control element, the liquid pump and the air pump, and the control module and the data acquisition module realize two-way data exchange.

2. The in-situ monitoring immersion coolant and server compatibility testing device according to claim 1, characterized in that: The shell further comprises an outer shell, and the outer shell is nested outside the inner shell.

3. The in-situ monitoring immersion coolant and server compatibility testing device according to claim 1, characterized in that: The inner wall of the inner shell body is provided with a size conversion module, and the size conversion module is used to adjust the accommodation space inside the inner shell body.

4. The in-situ monitoring immersion coolant and server compatibility testing device according to claim 1, characterized in that: The coolant circulation module further includes a filter, a flow meter and a flow regulating valve which are sequentially arranged on the first pipeline, the filter is located at the front end of the liquid pump, and the flow meter and the flow regulating valve are located at the rear end of the liquid pump.

5. The in-situ monitoring immersion coolant and server compatibility testing device according to claim 1, characterized in that: The output end of the first pipeline is equipped with a spray pipe, the spray pipe is arranged on the top of the server host, and a plurality of spray ports are opened on the spray pipe.

6. The in-situ monitoring immersion coolant and server compatibility testing device according to claim 1, characterized in that: A check valve is also provided on the ventilation pipeline. The check valve is located at the output end of the air pump and is used to prevent the coolant from flowing back into the air pump.

7. The in-situ monitoring immersion coolant and server compatibility testing device according to claim 1, characterized in that: The electrical property sensor is composed of equidistant electrodes, which are partially isolated by insulating materials to form an isolated portion and a non-isolated portion. The non-isolated portion is provided with a plurality of flow holes for the circulation of coolant.

8. The in-situ monitoring device for testing compatibility between immersion coolant and server according to claim 7, characterized in that: The equidistant electrodes include an outer electrode and an inner electrode. The outer electrode and the inner electrode are coaxial and equidistantly sleeved together. The outer electrode is threadedly connected to the inner shell body, and the non-isolated portion is in full contact with the coolant in the inner shell body. A limiting boss is provided circumferentially of the outer electrode. The limiting boss is used to limit the position of the equidistant electrodes entering the inner shell body. A sealing ring is also provided at one end of the limiting boss adjacent to the inner shell body.

9. The in-situ monitoring immersion coolant and server compatibility testing device according to claim 1, characterized in that: The electrical performance sensor module further includes an electrical performance testing device. The output end of the electrical performance sensor is connected to the electrical performance testing device via a wire. The electrical performance testing device is used for in-situ online testing of the electrical performance of the coolant.

10. A method for in-situ monitoring of compatibility between immersion coolant and server, characterized by: The specific testing method includes the following steps: Providing an in-situ monitoring immersion coolant and server compatibility test device as described in any one of claims 1 to 9, and installing test control software on the server host; Setting the target temperature of the coolant, the monitoring time interval, the flow rate of the coolant circulation module, and the flow rate of the ventilation module through the test control software; After the coolant has been allowed to sit for a while, start the liquid pump in the coolant circulation module and the air pump in the ventilation module according to the set parameters. Continuously monitor the coolant temperature and electrical properties, collect data at the set monitoring interval, and visually observe the appearance of the server host. If a server failure or significant degradation in coolant performance occurs during the test, it indicates compatibility issues between the coolant and the server. Shut down the liquid pump of the coolant circulation module and the air pump of the ventilation module, remove the data storage hard drive from the server, and read the experimental data from the hard drive to determine the compatibility failure duration. If the server host continues to operate normally after the set test duration and there is no obvious decline in coolant performance, it indicates that the coolant is compatible with the server host.

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