Liquid cooling test training operation system

Abstract

The invention relates to a liquid cooling test training operation system, which is characterized in that the liquid cooling test training operation system (1) comprises a refrigerant distribution device (2) and a liquid cooling object loop (3), the liquid-cooled object circuit (3) has a first annular circuit (10) and a second annular circuit (11) and a plurality of parallel branch lines (19, 20, 21, 22) which can be fluidically connected to the first annular circuit (10) and the second annular circuit (11), each branch line having a corresponding object to be liquid-cooled, the refrigerant from the refrigerant distribution device (2) can flow successively through the first annular circuit (10), the branch lines (19, 20, 21, 22) and the second annular circuit (11). The double-ring loop design of the liquid cooling object loop can realize line redundancy of the system, so that one or more branch lines can be opened and closed in a targeted manner according to test or training requirements.

Description

Technical Field

[0001] The invention relates to a liquid cooling test training operating system. Background Art

[0002] With the development of the information age, the use of data centers is increasing, and liquid cooling devices for data centers are also increasingly being used. Currently, there are a variety of liquid cooling methods for data cabinets in data centers, such as backplane liquid cooling, immersion liquid cooling, etc. And there are a variety of pipe connection methods for liquid cooling devices, such as threaded connection, quick-release chuck connection, quick-plug connector connection, etc.

[0003] In actual applications, the storage and servers in the data cabinets have different forms. The cooling performance and temperature distribution under different temperatures and flow rates of the coolant need to be tested. Parameter settings in actual operation are of great significance for energy-saving operation, so the parameters of the liquid cooling device can be reasonably optimized based on the test results.

[0004] During the maintenance of the data center, failures such as refrigerant distribution devices, data cabinets, and pipeline leakage may occur. Since the data center has high safety requirements and cannot be shut down, the maintenance time limit and maintenance accuracy are very high, which increases the difficulty of maintenance for operation and maintenance personnel. Therefore, the operation and maintenance personnel need to improve their capabilities for on-site fault testing and on-site fault handling steps.

[0005] Currently, a liquid-cooled test and training operating system for the above scenarios is yet to be developed. Summary of the invention

[0006] The purpose of the present invention is to provide a liquid-cooled test training operating system, which can at least solve one of the above-mentioned problems.

[0007] In order to achieve the above-mentioned purpose, the present invention proposes a liquid-cooled test training operation system, characterized in that the liquid-cooled test training operation system includes a refrigerant distribution device and a liquid-cooled object circuit, the liquid-cooled object circuit has a first ring circuit and a second ring circuit and a plurality of parallel branch lines that can fluidly connect the first ring circuit and the second ring circuit, each of the branch lines has a corresponding object to be liquid-cooled, and the refrigerant from the refrigerant distribution device can flow through the first ring circuit, the branch lines and the second ring circuit in succession.

[0008] The beneficial effect of the liquid-cooled test training operating system of the present invention is, but not limited to, that the dual-loop loop design of the liquid-cooled object loop can achieve line redundancy of the system, so that one or more branch lines can be opened and closed in a targeted manner according to test or training requirements.

[0009] Advantageously, the object to be liquid-cooled comprises a test load.

[0010] Advantageously, the object to be liquid-cooled includes a simulated load.

[0011] Advantageously, the test load is connected to the corresponding branch line through a threaded connection joint, a quick-connect joint, or a quick-connect chuck joint.

[0012] Advantageously, the dummy load is connected directly in the corresponding branch line.

[0013] Advantageously, at least one of the branch lines is provided with a threaded connection valve or a quick-connection valve or a quick-connection chuck valve upstream and downstream of the corresponding object to be liquid-cooled, for fluidly connecting or isolating the corresponding object to be liquid-cooled.

[0014] Advantageously, isolating valves are provided on the first and second annular loops, and are arranged upstream and / or downstream of access points of the branch lines provided with the test loads on the first and second annular loops.

[0015] Advantageously, the branch lines have a thermometer upstream and / or downstream of the corresponding object to be liquid-cooled, for measuring the temperature of the refrigerant in the corresponding branch lines.

[0016] Advantageously, the test load is a data cabinet.

[0017] Advantageously, the simulated load is a heating element.

[0018] Advantageously, the simulated load is configured as a heater with adjustable heating power for directly heating the refrigerant.

[0019] Advantageously, the refrigerant distribution device comprises a cooling liquid circuit and a refrigerant circuit, wherein the refrigerant circuit is in fluid connection with the liquid-cooled object circuit, and the cooling liquid circuit and the refrigerant circuit are in heat exchange.

[0020] Advantageously, the cooling liquid circuit is fluidically connected to an external refrigeration unit or a cooling water tank for dissipating heat to the surrounding environment.

[0021] Advantageously, the coolant circuit has a regulating valve for regulating the coolant flow rate on its coolant inlet pipe and coolant outlet pipe respectively.

[0022] Advantageously, the refrigerant circuit has drain valves on its refrigerant inlet pipeline and refrigerant outlet pipeline respectively for simulating refrigerant leakage.

[0023] Advantageously, the refrigerant can flow through the first annular circuit in two parallel flow directions, and the refrigerant can flow through the second annular circuit in two parallel flow directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be explained in more detail below with the aid of embodiments with reference to the accompanying drawings, but the present invention is not limited to the embodiments described in the drawings and described in detail below. The accompanying drawings are as follows:

[0025] Figure 1 It is an exemplary schematic diagram of a liquid-cooled test training operating system of the present invention. DETAILED DESCRIPTION

[0026] An illustrative embodiment of the liquid-cooled test training operating system 1 of the present invention is described below. In this specification, for the sake of explanation only, various systems, structures and devices are schematically depicted in the accompanying drawings, but all features of the actual systems, structures and devices are not described, such as well-known functions or structures are not described in detail, to avoid unnecessary details that make the present invention unclear. Of course, it should be understood that in any practical application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and system-related and industry-related restrictions need to be followed, and these specific goals may vary from practical application to practical application. In addition, it should be understood that although such specific implementation decisions are complex and time-consuming, this is a routine task for those of ordinary skill in the art who benefit from the present invention.

[0027] The terms and phrases used herein should be understood and interpreted as having a meaning consistent with the understanding of such terms and phrases by those skilled in the relevant art. Consistent usage of a term or phrase herein is not intended to imply a special definition of the term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art. For terms or phrases that are intended to have a special meaning, i.e., a meaning that is different from that understood by those skilled in the art, such special definition will be explicitly listed in the specification as a definition, directly and unambiguously giving the special definition of the term or phrase.

[0028] Unless required by the context, throughout the following specification, the word "include" and variations such as "comprising" and "having" are to be interpreted in an open, inclusive sense, that is, such as "including but not limited to".

[0029] Next, combine Figure 1 A liquid-cooled test training operating system 1 according to one embodiment of the present invention is exemplified.

[0030] See also Figure 1, the liquid cooling test training operating system 1 may include a refrigerant distribution device 2 and a liquid cooling object loop 3. The refrigerant distribution device 2 may also be referred to as CDU ("Cooling Distribution Unit" in English). The liquid cooling object loop 3 may generally have at least one object to be liquid cooled, such as a data cabinet as a test load, or a simulated load simulating a data cabinet. A data cabinet may generally have multiple functional elements, such as storage hard disks, switching servers, etc., which may continuously generate heat during operation depending on the power consumption. Excessive heat may cause functional element failure, so it is necessary to continuously extract heat from the object to be liquid cooled.

[0031] The refrigerant distribution device 2 is a cooling device, which can generally include a coolant circuit 4 and a refrigerant circuit 5. The refrigerant circuit 5 can be directly fluidly connected to the liquid-cooled object circuit 3 of the liquid-cooled test training operating system 1, and is used to continuously export heat from the liquid-cooled object circuit 3 to the refrigerant circuit 5. The coolant circuit 4 and the refrigerant circuit 5 can have cooling media that are fluidly separated from each other (i.e., the coolant LS in the coolant circuit 4 and the refrigerant LM in the refrigerant circuit 5), and the cooling medium can be, for example, deionized water, mineral oil or silicone oil. The heat continuously exported from the liquid-cooled object circuit 3 can be exchanged between the coolant circuit 4 and the refrigerant circuit 5 without exchanging the cooling medium. In addition, since the refrigerant circuit 5 is directly in heat exchange with the coolant circuit 4, the heat exchanged from the refrigerant circuit 5 is exported to the refrigeration unit 27 outside the liquid-cooled test training operating system 1 via the coolant circuit 4. The refrigeration unit 27 can be used to dissipate the heat of the cooling medium of the coolant loop 4 to the surrounding environment or the atmospheric environment, and the cooling medium in the coolant loop 4 can be returned to the CDU after cooling down to exchange heat with the refrigerant loop 5. The refrigeration unit 27 can be, for example, a refrigeration device including a cooling tower. Alternatively, the coolant loop 4 can also be directly connected to a cooling water tank, such as tap water, thereby eliminating the external refrigeration unit 27. In addition, the refrigerant loop 5 can also have a refrigerant circulation pump, a refrigerant constant pressure replenishment device, and a control device, which are not shown here, and they belong to the prior art and are therefore not described in detail.

[0032] The coolant circuit 4 has a coolant inlet pipe 23 and a coolant outlet pipe 24 outside the refrigerant distribution device 2. The coolant inlet pipe 23 of the coolant circuit 4 is used to connect the relatively cold coolant from the external refrigeration unit 27 (or cooling water pool) to the refrigerant distribution device 2, and the coolant outlet pipe 24 of the coolant circuit 4 is used to connect the coolant to the external refrigeration unit 27 (or cooling water pool) after the coolant is heated up in the refrigerant distribution device 2 due to absorbing heat. A pressure gauge 6, a thermometer 7 and a regulating valve 8 can be arranged on the coolant inlet pipe 23 and the coolant outlet pipe 24, respectively, wherein the pressure gauge 6 and the thermometer 7 are used to measure the pressure and temperature on the coolant inlet pipe 23 and the coolant outlet pipe 24, respectively, and the regulating valve 8 is used to adjust the flow rate of the coolant in and out of the refrigerant distribution device 2, so as to adjust the cooling power of the refrigerant distribution device 2.

[0033] The refrigerant circuit 5 has a refrigerant inlet pipe 25 and a refrigerant outlet pipe 26 outside the refrigerant distribution device 2. The refrigerant outlet pipe 26 of the refrigerant circuit 5 is used to bring the colder refrigerant from the refrigerant distribution device 2 to the liquid cooling object circuit 3, and the refrigerant inlet pipe 25 of the refrigerant circuit 5 is used to bring the hotter refrigerant that has exchanged heat with the object to be liquid cooled in the liquid cooling object circuit 3 into the refrigerant distribution device 2. Thus, the heat of the object to be liquid cooled in the liquid cooling object circuit 3 is exported to the external refrigeration unit 27 via the refrigerant circuit 5 and further via the cooling liquid circuit 4, and further exported to the surrounding environment or the atmospheric environment via the external refrigeration unit 27. Similarly, a pressure gauge 6 and a thermometer 7 are also provided on the refrigerant inlet pipe 25 and the refrigerant outlet pipe 26 of the refrigerant circuit 5 to measure the pressure and temperature on the refrigerant inlet pipe 25 and the refrigerant outlet pipe 26. In addition, drain valves 9 are provided on the refrigerant inlet pipeline 25 and the refrigerant outlet pipeline 26 , respectively, for discharging the refrigerant from the refrigerant circuit 5 .

[0034] See also Figure 1, the liquid-cooled object circuit 3 has a first annular circuit 10 and a second annular circuit 11. Among them, the refrigerant outlet pipe 26 of the refrigerant circuit 5 is fluidly connected to the first annular circuit 10 upstream of the first annular circuit 10, and the refrigerant access pipe 25 of the refrigerant circuit 5 can be fluidly connected to the second annular circuit 11 downstream of the second annular circuit 11. In addition, the liquid-cooled object circuit 3 also has a plurality of (four are shown here) parallel branch lines 19-22, and the first annular circuit 10 and the second annular circuit 11 are respectively connected by the plurality of parallel branch lines 19-22 fluids. Therefore, during cooling operation, the refrigerant flows in sequence through the refrigerant outlet pipe 26 of the refrigerant circuit 5, the first annular circuit 10 of the liquid-cooled object circuit 3, the parallel branch lines 19-22, the second annular circuit 11 of the liquid-cooled object circuit 3, and the refrigerant access pipe 25 of the refrigerant circuit 5, thereby, the refrigerant forms a complete circulation loop. It should be noted that, Figure 1 The specific flow direction of the refrigerant in the figure is only exemplary, and any flow direction that can form a complete circulation loop of the refrigerant is possible. In the first annular loop 10, the refrigerant can flow through the first annular loop 10 along two parallel flow directions starting from the connection point between the refrigerant outlet pipe 26 and the first annular loop 10. In the second annular loop 11, the refrigerant can flow through the second annular loop 11 along two parallel flow directions and meet at the connection point between the refrigerant inlet pipe 25 and the second annular loop 11.

[0035] exist Figure 1In the embodiment, the first branch line 19, the second branch line 20, the third branch line 21 and the fourth branch line 22 can respectively have a first test load, a second test load, a third test load and a simulated load as the object to be liquid-cooled. Here, for example, the first test load, the second test load and the third test load can be used to test the cooling capacity, the refrigeration capacity and the load failure, etc., and the simulated load can be a heating element, for example, and the heating element can be a heater with adjustable heating power, such as a water tank heater, which can be used to simulate the functional element of the data cabinet that generates heat. The heating element has a maximum heating power of 12 kilowatts, for example, and the heating power can be adjusted in multiple stages (for example, three stages). However, the liquid-cooled object loop 3 can also alternatively have more or less than four objects to be liquid-cooled. The first branch line 19, the second branch line 20, the third branch line 21 and the fourth branch line 22 can also have a pressure gauge 6 and a thermometer 7 not shown here, which are used to measure the pressure and temperature on the corresponding branch lines 19-22. The pressure gauge 6 and the thermometer 7 can be arranged upstream and / or downstream of the object to be liquid-cooled of the branch lines 19-22. Here, the first test load, the second test load, and the third test load can be the data cabinet to be tested in actual use, but can also be a dedicated test load (i.e., a data cabinet dedicated to testing).

[0036] The first test load may have a first heat exchanger for exchanging heat to the refrigerant of the first branch line 19. The heat exchange pipeline of the first heat exchanger may be connected to the first branch line 19 by means of a threaded connector 13, for example. In addition, the first branch line 19 also has a threaded valve 12, which is connected to the first branch line 19 upstream and downstream of the first test load by means of threads, for isolating the first test load. Similarly, the second test load and the third test load may also have a second heat exchanger and a third heat exchanger, respectively. Different from the case of the first test load, the heat exchange pipeline of the second heat exchanger may be connected to the second branch line 20 by means of a quick connector 15, for example, and the second branch line 20 has a quick connector valve 14, which is connected to the second branch line 20 upstream and downstream of the second test load by means of a quick connector, for isolating the second test load. The heat exchange pipeline of the third heat exchanger can be connected to the third branch line 21 by using a quick-connect chuck joint 17, for example, and the third branch line 21 has a quick-connect chuck valve 16, which is connected to the third branch line 21 upstream and downstream of the third test load by using a quick-connect chuck, for isolating the third test load. The fourth branch line 22 has a quick-connect chuck valve 16, which is connected to the fourth branch line 22 upstream and downstream of the simulated load by using a quick-connect chuck, for isolating the simulated load. As described above, the simulated load can be a water tank heater or more precisely a heating resistor wire, so the simulated load can be directly fixed (without a connection device such as a threaded connection joint) in the fourth branch line 22, so that the refrigerant flows through the simulated load or more precisely the heating resistor wire and transfers heat to the fourth branch line 22.

[0037] The first annular loop 10 may have a separation valve 18, which is arranged upstream and downstream of the access point of the first test load, the second test load and the third test load on the first annular loop 10. Similarly, the second annular loop 11 may also have a separation valve 18, which is arranged upstream and downstream of the access point of the first test load, the second test load and the third test load on the second annular loop 11. Through the separation valves 18 on the first annular loop 10 and the second annular loop 11, when the load on a branch line needs to be isolated due to a fault, for example, the corresponding separation valve 18 can be closed to prevent the refrigerant from continuing to be supplied to the corresponding fault branch line, but at the same time, the branch line originally located downstream of the fault load will not lose the refrigerant supply due to the closure of the upstream separation valve 18, but will be supplied with refrigerant from the other side of the annular loop due to the annular loop design. Of course, the isolation of the corresponding object to be liquid-cooled can also be achieved by closing the corresponding valves (such as the threaded connection valve 12, etc.) arranged upstream and downstream of the corresponding object to be liquid-cooled.

[0038] The method for testing the liquid-cooled test training operating system 1 of the present application is now exemplarily described in conjunction with the liquid-cooled test training operating system 1 described above.

[0039] 1) System cooling capacity test:

[0040] - Close the threaded connection valve 12 in the first branch line 19, the quick connector valve 14 in the second branch line 20 and the quick-connect chuck valve 16 in the third branch line 21, and open the quick-connect chuck valve 16 in the fourth branch line 22;

[0041] - multi-stage regulation of the simulated load or, more precisely, the heating power of the tank heater;

[0042] - Use the thermometer 7 on the fourth branch line 22 to measure the refrigerant temperature in the fourth branch line 22, and determine whether the refrigerant temperature in the fourth branch line 22 is within a predetermined temperature range based on the measured refrigerant temperature, so as to test the cooling capacity of the liquid cooling test training operating system 1 under different load conditions of the object to be cooled.

[0043] 2) CDU cooling failure test:

[0044] - Open at least one of the threaded connection valve 12 in the first branch line 19, the quick-connection valve 14 in the second branch line 20, the quick-connection cartridge valve 16 in the third branch line 21, and the quick-connection cartridge valve 16 in the fourth branch line 22;

[0045] - adjusting the regulating valve 8 on the coolant inlet pipe 23 of the coolant circuit 4 to reduce the flow of the coolant inlet into the coolant circuit 4, thereby simulating a CDU cooling failure (insufficient cooling);

[0046] -Measure the refrigerant temperature in the corresponding branch line 19-22, and determine whether the refrigerant temperature in the corresponding branch line 19-22 is within a predetermined temperature range, thereby testing the cooling capacity of the liquid cooling test training operating system 1 in the event of a CDU cooling failure.

[0047] 3) CDU cooling environment test:

[0048] - Open at least one of the threaded connection valve 12 in the first branch line 19, the quick-connection valve 14 in the second branch line 20, the quick-connection cartridge valve 16 in the third branch line 21, and the quick-connection cartridge valve 16 in the fourth branch line 22;

[0049] - Regulate the regulating valve 8 on the coolant access pipe 23 of the coolant circuit 4 to increase or decrease the flow of the coolant connected to the coolant circuit 4, so as to simulate the cooling conditions of the CDU in different seasons (i.e. different ambient temperatures);

[0050] -Measure the refrigerant temperature in the corresponding branch lines 19-22, and determine whether the refrigerant temperature in the corresponding branch lines 19-22 is within a predetermined temperature range, so as to test the cooling capacity of the liquid cooling test training operating system 1 when the external environment of the CDU changes (such as seasonal changes).

[0051] 4) Multiple load tests:

[0052] - Simultaneously open the threaded connection valve 12 in the first branch line 19, the quick-connection valve 14 in the second branch line 20, the quick-connection chuck valve 16 in the third branch line 21, and the quick-connection chuck valve 16 in the fourth branch line 22;

[0053] Additionally or alternatively, regulating the heating power of the simulated load or more precisely of the tank heater;

[0054] -Measure the refrigerant temperature in the corresponding branch lines 19-22, and determine whether the refrigerant temperature in the corresponding branch lines 19-22 is within a predetermined temperature range, so as to test whether the cooling capacity of the liquid cooling test training operating system 1 under multiple loads can achieve uniform cooling capacity.

[0055] In addition, the liquid-cooled test training operation system 1 can also be used to train operators through operation simulation and fault simulation.

[0056] 1) Run the simulation:

[0057] - Turn on the liquid cooling test training operating system 1 to circulate the coolant;

[0058] - Switch on the test load and the simulated load to generate heat;

[0059] - The temperature changes of the coolant and refrigerant can be observed through the corresponding thermometer 7, so as to provide basic principle training for operators.

[0060] 2) CDU parameter simulation:

[0061] - In the case of running simulation, the regulating valve 8 on the coolant inlet pipe 23 and the coolant outlet pipe 24 is adjusted according to the refrigerant temperature in the corresponding branch lines 19-22;

[0062] - The refrigerant circulation pump of the refrigerant circulation loop 5 is adjusted by setting the temperature and pressure parameters of the CDU.

[0063] 3) Operation simulation of refrigerant constant pressure liquid replenishment device:

[0064] The actual operation of the refrigerant constant pressure liquid replenishing device includes: controlling the liquid level of the liquid tank of the refrigerant constant pressure liquid replenishing device, selecting the drainage method, replenishing the liquid into the liquid tank, venting the liquid tank, and operating the liquid replenishing pump, etc.

[0065] 4) CDU failure simulation: for example, closing the valve of the refrigerant constant pressure liquid replenishing device to simulate a constant pressure liquid replenishing device failure; and / or opening the drain valve 9 to simulate a liquid leakage.

[0066] 5) Refrigerant circuit leakage repair simulation: simulate the refrigerant liquid leakage scenario by opening the drain valve 9 on the refrigerant inlet pipe 25 or the refrigerant outlet pipe 26 or the connection of a test load (for example, disconnecting the threaded connection joint 13 or the quick-connect joint 15 or the quick-connect chuck joint 17); isolate the faulty load by closing the corresponding valve.

[0067] 6) Test load connection simulation: The operator disconnects the test load (for example, disconnects the threaded connection connector 13 or the quick-connect connector 15 or the quick-connect chuck connector 17), replaces the test load, simulates the connection and removal of the test load, and performs a pressure test.

[0068] Therefore, the main technical effects that can be achieved by the liquid-cooled test training operating system 1 of the present invention include, but are not limited to:

[0069] 1) Testing of the CDU and the object to be cooled is performed without using a data cabinet used on site.

[0070] 2) It can simulate different failure conditions of CDU and data cabinets. Therefore, using the liquid cooling test training operating system can effectively increase the understanding of equipment failures and on-site handling methods, enhance the operation and maintenance personnel's intuitive understanding of liquid cooling system equipment, and intuitively perform on-site operations, improve the maintenance capabilities of personnel, and avoid misoperation when failures occur.

[0071] 3) The dual-loop design of the liquid-cooled object circuit can achieve line redundancy for the system, so that one or more branch lines can be opened and closed in a targeted manner according to testing or training requirements.

[0072] Finally, it should be pointed out that the above embodiments are only used to understand and explain the present invention, and do not limit the protection scope of the present invention. For those skilled in the art, modifications can be made based on the above embodiments, and all these modifications do not depart from the protection scope of the present invention.

Claims

1. A liquid-cooled test training operating system, characterized in that: The liquid cooling test training operation system (1) comprises a refrigerant distribution device (2) and a liquid cooling object circuit (3), wherein the liquid cooling object circuit (3) comprises a first annular circuit (10) and a second annular circuit (11) and a plurality of parallel branch lines (19, 20, 21, 22) capable of fluidly connecting the first annular circuit (10) and the second annular circuit (11), each of the branch lines having a corresponding object to be liquid cooled, and the refrigerant from the refrigerant distribution device (2) can flow successively through the first annular circuit (10), the branch lines (19, 20, 21, 22) and the second annular circuit (11).

2. The liquid cooling test training operating system according to claim 1, characterized in that: The object to be liquid-cooled includes a test load, and / or the object to be liquid-cooled includes a simulated load.

3. The liquid-cooled test training operating system according to claim 1 or 2, characterized in that: The test load is connected to the corresponding branch line through a threaded connection joint (13) or a quick-connect joint (15) or a quick-connect chuck joint (17), and / or the simulated load is directly connected to the corresponding branch line.

4. The liquid-cooled test training operating system according to any one of claims 1 to 3, characterized in that: At least one of the branch lines (19, 20, 21, 22) is provided with a threaded connection valve (12) or a quick-connection valve (14) or a quick-connection chuck valve (16) upstream and downstream of the corresponding object to be liquid-cooled, for fluidly connecting or isolating the corresponding object to be liquid-cooled.

5. The liquid-cooled test training operating system according to any one of claims 1 to 4, characterized in that: Separation valves (18) are provided on the first annular loop (10) and the second annular loop (11). The separation valves (18) are arranged upstream and / or downstream of access points of branch lines provided with test loads on the first annular loop (10) and the second annular loop (11).

6. The liquid-cooled test training operating system according to any one of claims 1 to 5, characterized in that: The branch lines (19, 20, 21, 22) are provided with a thermometer (7) upstream and / or downstream of the corresponding object to be liquid-cooled, for measuring the temperature of the refrigerant in the corresponding branch line.

7. The liquid-cooled test training operating system according to any one of claims 1 to 6, characterized in that: The test load is a data cabinet.

8. The liquid-cooled test training operating system according to any one of claims 1 to 7, characterized in that: The simulated load is a heating element, and / or the simulated load is configured as a heater with adjustable heating power, which is used to directly heat the refrigerant.

9. The liquid-cooled test training operating system according to any one of claims 1 to 8, characterized in that: The refrigerant distribution device (2) comprises a cooling liquid circuit (4) and a refrigerant circuit (5), wherein the refrigerant circuit (5) is in fluid connection with the liquid-cooled object circuit (3), and the cooling liquid circuit (4) and the refrigerant circuit (5) are in heat exchange, and / or the cooling liquid circuit (4) is in fluid connection with an external refrigeration unit (27) or a cooling water pool for dissipating heat to the surrounding environment, and / or the cooling liquid circuit (4) has a regulating valve (8) for regulating the coolant flow rate on its cooling liquid inlet pipe (23) and cooling liquid outlet pipe (24), and / or the refrigerant circuit (5) has a drain valve (9) for simulating refrigerant leakage on its cooling liquid inlet pipe (25) and cooling liquid outlet pipe (26).

10. The liquid-cooled test training operating system according to any one of claims 1 to 9, characterized in that: The refrigerant is capable of flowing through the first annular circuit (10) in two parallel flow directions, and the refrigerant is capable of flowing through the second annular circuit (11) in two parallel flow directions.

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