Device and method for testing cooling system of integrated converter

Abstract

The invention discloses a cooling system testing device and method for an integrated converter. The device comprises a flow adjusting assembly, a connecting loop pipeline and at least two cooling systems located on a train. The flow adjusting assembly is arranged on the connecting loop pipeline, and the flow adjusting assembly is used for adjusting the flow of the connecting loop pipeline; the cooling systems are communicated in sequence; wherein a water inlet of one cooling system is communicated with one end of the connecting loop pipeline, a water outlet of the water pump is communicated with a water inlet of the other cooling system, and the cooling systems are communicated with the connecting loop pipeline to form a loop. Original cooling systems of the train are mutually connected and serve as accompanying test equipment during testing, the accompanying test equipment does not need to be newly added, the testing cost is reduced, the installation and connection time of the accompanying test equipment is shortened, and the testing efficiency is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cooling system testing, and in particular to a cooling system testing device and a testing method for an integrated converter. Background Art

[0002] With the development of rail transit, the running speed of rail transit trains is getting faster and faster, and the traction power of trains is also getting higher and higher. With the increase of traction power, the volume and weight of train traction equipment also increase accordingly. However, due to the limited installation space of the train, different traction equipment needs to be integrated to reduce the volume and weight. In terms of high-power traction equipment, due to the high power and high loss, water cooling with larger heat capacity is usually used to ensure the normal operation of the equipment.

[0003] In order to ensure the reliability of the water cooling system, the cooling systems of different traction equipment need to be tested. The water cooling circuits of different equipment are relatively independent. Therefore, during the water cooling system test, some functions need to be verified separately, and additional corresponding accompanying test equipment is required. The accompanying test equipment is used to simulate the operation of the cooled equipment during the train operation. Therefore, the test efficiency of the water cooling system needs to be further improved by using the traditional method. Summary of the invention

[0004] The present disclosure provides a cooling system testing device and a testing method for an integrated converter.

[0005] In one aspect of the present disclosure, there is provided a cooling system test device for an integrated converter, comprising a flow regulating assembly, a connecting loop pipe, and at least two cooling systems located on a train;

[0006] The flow regulating component is arranged on the connecting loop pipeline, and the flow regulating component is used to regulate the flow of the connecting loop pipeline;

[0007] The cooling systems are connected in sequence;

[0008] Wherein, the water inlet of one cooling system is connected to one end of the connecting loop pipeline, and the other end of the connecting loop pipeline is connected to the water outlet of another cooling system, and each cooling system is connected to the connecting loop pipeline to form a loop;

[0009] Each of the cooling systems is used: when one of the cooling systems is used as the cooling system to be tested, the remaining cooling systems are used as accompanying test equipment.

[0010] In one of the embodiments, the cooling system includes a first cooling system and a second cooling system;

[0011] The water inlet of the first cooling system is connected to one end of the connecting loop pipeline, the water outlet of the first cooling system is connected to the water inlet of the second cooling system, and the water outlet of the second cooling system is connected to the other end of the connecting loop pipeline.

[0012] In one of the embodiments, it further comprises a flow detection component, wherein the flow detection component is arranged on the connecting loop pipeline, and the flow regulating component is used to detect the flow of the connecting loop pipeline.

[0013] In one embodiment, the flow regulating component includes a flow regulating valve.

[0014] In one embodiment, the number of cooling systems is less than or equal to four.

[0015] In a second aspect of the present disclosure, a cooling system testing method for an integrated converter is provided, which is applied to a testing device in any of the above embodiments, comprising:

[0016] Based on a first preset flow value, turning on or adjusting the flow regulating component;

[0017] Turn on the water pump of the cooling system to be tested, and turn off the water pumps of other cooling systems or keep the water pumps of other cooling systems turned off;

[0018] Test the cooling system currently under test;

[0019] After testing the cooling system to be tested currently, turning off the water pump of the cooling system to be tested currently, taking another cooling system as the next cooling system to be tested according to a preset test sequence, turning on the water pump of the next cooling system to be tested, and turning off the water pumps of the other cooling systems or keeping the water pumps of the other cooling systems turned off;

[0020] The next cooling system to be tested is tested.

[0021] In one embodiment, the step of starting or adjusting the flow regulating component based on the preset flow value includes:

[0022] Maintaining the pressure in each of the cooling systems and the connecting loop pipelines;

[0023] Detecting whether there is leakage in the connection between each of the cooling systems and the connecting loop pipeline;

[0024] When there is no leakage in the connection between each of the cooling systems and the connecting loop pipeline, the flow regulating component is turned on or adjusted based on the first preset flow value.

[0025] In one embodiment, before the step of testing the next cooling system to be tested, the step further includes:

[0026] Based on the second preset flow value, the flow regulating component is adjusted.

[0027] In one embodiment, the testing device further comprises a flow detection component, the flow detection component is arranged on the connecting loop pipeline, and the flow regulating component is used to detect the flow of the connecting loop pipeline;

[0028] The step of starting or adjusting the flow regulating component based on the first preset flow value includes:

[0029] Using the flow detection component to detect the real-time flow of the connecting loop pipeline;

[0030] Based on the first preset flow value, the real-time flow of the flow regulating component is adjusted so that the real-time flow is equal to the first preset flow value.

[0031] In one embodiment, the number of cooling systems is less than or equal to four.

[0032] The cooling system test device for the integrated converter disclosed in the present invention utilizes the interconnection between the original cooling systems of the train. During the test, they serve as test equipment for each other, and no new test equipment is required, which reduces the test cost and also reduces the installation and connection time of the test equipment. The test efficiency is increased by more than 30%, which effectively improves the test efficiency. In addition, by adopting the method disclosed in the present invention, multiple cooling systems are connected by connecting loop pipes, and the leakage test of two systems can be completed at one time. Compared with the pressure maintenance of two cooling systems separately, the efficiency is increased by 50%. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present disclosure will be described in more detail below based on embodiments and with reference to the accompanying drawings:

[0034] Figure 1 A schematic diagram of the connection structure of a cooling system test device for an integrated converter provided in an embodiment of the present disclosure;

[0035] Figure 2 A schematic flow chart of a cooling system testing method for an integrated converter provided in an embodiment of the present disclosure;

[0036] Figure 3 A schematic diagram of the connection structure of a cooling system testing device for an integrated converter provided in another embodiment of the present disclosure.

[0037] In the drawings, the same reference numerals are used for the same components, and the drawings are not drawn to scale. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, and to fully understand and implement how the present disclosure applies technical means to solve technical problems and achieve the corresponding technical effects, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only embodiments of a part of the present disclosure, not all of the embodiments. The embodiments of the present disclosure and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the scope of protection of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present disclosure.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0040] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0041] Embodiment 1

[0042] Figure 1 The structure diagram of a cooling system test device for an integrated converter provided by an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, a cooling system test device for an integrated converter includes: a flow regulating component, a connecting loop pipeline and at least two cooling systems located on a train;

[0043] The flow regulating component is arranged on the connecting loop pipeline, and the flow regulating component is used to regulate the flow of the connecting loop pipeline;

[0044] The cooling systems are connected in sequence; wherein, the water inlet of one cooling system is connected to one end of the connecting loop pipe, and the other end of the connecting loop pipe is connected to the water outlet of another cooling system, and the cooling systems are connected to the connecting loop pipe to form a loop, and the cooling systems are used for: when one of the cooling systems is used as the cooling system to be tested, the remaining cooling systems are used as accompanying test equipment.

[0045] Specifically, each of the cooling systems comprises a heat exchanger and a water pump, and the output port of the heat exchanger is connected to the input port of the water pump belonging to the same cooling system;

[0046] Each of the cooling systems is connected in sequence and connected to the connecting loop pipeline, wherein the water inlet of the heat exchanger of one cooling system is connected to one end of the connecting loop pipeline, the water outlet of the water pump is connected to the water inlet of the heat exchanger of another cooling system, and the water outlet of the water pump of one cooling system is connected to the other end of the connecting loop pipeline.

[0047] In this embodiment, the cooling system is a water cooling system. The cooling system is used on a rail transit train to cool the traction equipment of the train. Each cooling system is an original cooling system on the train. When each cooling system is connected and connected to the connecting loop pipeline, a test device is formed. Each cooling system can be used as a test device or as a cooling system to be tested.

[0048] In this embodiment, the heat exchanger and the water pump belonging to the same cooling system are interconnected, and the water inlet of the heat exchanger of the cooling system in the first position is connected to one end of the connecting loop pipe, the water outlet of the water pump of the cooling system in the last position is connected to the other end of the connecting loop pipe, and the water outlet of the water pump of one cooling system in two adjacent cooling systems in the connection sequence is connected to the water inlet of the heat exchanger of the other cooling system, thereby realizing the connection of the cooling systems. It is worth mentioning that the first position, the last position and the connection sequence mentioned in this embodiment have nothing to do with the actual cooling system on the train. The first position, the last position and the connection sequence in this embodiment can be set according to the arrangement position of the cooling system on the train, or they can be set regardless of the arrangement position of the cooling system on the train.

[0049] Specifically, during the test, the two cooling systems are connected in series, but when the water pump of the cooling system being tested is started, the other cooling system does not work. The coolant flows through its circuit, and its internal flow channel forms liquid flow resistance, thereby simulating the resistance of the water channel inside the motor during actual work, matching the head of the water pump, and making the water pump work at the actual working point to achieve the test purpose.

[0050] During the test, first turn on the water pump of one of the cooling systems so that the cooling water circulates in each cooling system and the connecting loop pipes, turn off the water pumps of other cooling systems, and use other cooling systems as accompanying test equipment to simulate the traction equipment during train operation, so as to test the first cooling system. When the first cooling system is tested, turn off the water pump of the cooling system, turn on the water pump of the next cooling system, keep the water pumps of other cooling systems turned off, and test the next cooling system.

[0051] In this embodiment, the existing cooling systems of the train are connected to each other. During the test, they serve as test equipment for each other, and there is no need to add new test equipment, which reduces the test cost and also reduces the installation and connection time of the test equipment. The test efficiency is increased by more than 30%, which effectively improves the test efficiency. In addition, by adopting the method disclosed in the present invention, multiple cooling systems are connected by connecting loop pipes, and the leakage test of two systems can be completed at one time, which is 50% more efficient than maintaining pressure of two cooling systems separately.

[0052] In addition, by forming a loop connection through multiple cooling systems and connecting loop pipes, a leak test can be performed at one time, thereby shortening the leak detection time. There is no need to leak test each cooling system one by one, shortening the time for preparation before testing and further improving measurement efficiency.

[0053] Embodiment 2

[0054] On the basis of the above embodiment, the cooling system in this embodiment includes a first cooling system and a second cooling system;

[0055] The water inlet of the first cooling system is connected to one end of the connecting loop pipeline, the water outlet of the first cooling system is connected to the water inlet of the second cooling system, and the water outlet of the second cooling system is connected to the other end of the connecting loop pipeline; the first cooling system and the second cooling system are used: when the first cooling system is used as the cooling system to be tested, the second cooling system is used as the accompanying test equipment, and when the second cooling system is used as the cooling system to be tested, the first cooling system is used as the accompanying test equipment.

[0056] Specifically, the first cooling system includes a first heat exchanger and a first water pump, and the second cooling system includes a second heat exchanger and a second water pump;

[0057] The water inlet of the first heat exchanger is connected to one end of the connecting loop pipeline, the output port of the first heat exchanger is connected to the input port of the first water pump, the water outlet of the first water pump is connected to the water inlet of the second heat exchanger, the output port of the second heat exchanger is connected to the input port of the second water pump, and the water outlet of the second water pump is connected to the other end of the connecting loop pipeline.

[0058] In this embodiment, it is applied to the case where there are two cooling systems, the two cooling systems are respectively a first cooling system and a second cooling system. When the first cooling system is tested, the second cooling system is used as a companion test device, and when the second cooling system is tested, the first cooling system is used as a companion test device.

[0059] In this embodiment, the cooling system test device is built for the cooling systems on the train in groups of two, which can effectively improve the test efficiency and help reduce the connection complexity of the test device.

[0060] In order to realize flow detection of the connecting loop pipeline, in one embodiment, the testing device also includes a flow detection component, and the flow detection component is arranged on the connecting loop pipeline, and the flow regulating component is used to detect the flow of the connecting loop pipeline.

[0061] In this embodiment, Figure 1 As shown, the flow detection component includes a flow meter, and the flow detection component can detect the flow of the connecting loop pipeline in real time. In this way, when the flow regulation component adjusts the flow of the connecting loop pipeline, the tester can know the flow of the connecting loop pipeline in real time, thereby realizing accurate regulation of the flow of the connecting loop pipeline.

[0062] In order to achieve flow regulation of the connecting loop pipeline, in one embodiment, the flow regulation component includes a flow regulation valve. In this embodiment, the flow regulation valve is used to regulate the flow of the connecting loop pipeline, and the flow of the connecting loop pipeline can be regulated by opening the opening of the flow regulation valve.

[0063] Specifically, the flow rate of the test device is different, and its pressure is also different. Therefore, by adjusting the flow rate of the connecting loop pipeline through the flow regulating valve, the flow rate of the test device can be adjusted, thereby adjusting the pressure of the test device. Corresponding to different cooling systems under test, the flow rate and pressure of the accompanying test equipment (simulated traction equipment) are different. Therefore, through the flow regulating valve, the flow rate of the connecting loop pipeline can be adjusted according to the flow rate of the accompanying test equipment, so that the test of the cooling system is more accurate, so that the working pressure of the test device is consistent with the actual working pressure, and a more accurate test is achieved.

[0064] In order to improve the test accuracy, in one embodiment, the number of the cooling systems is less than or equal to four.

[0065] It should be understood that when the number of connected cooling systems increases, the length of the connected pipes increases, and the overall loop of the test device increases. On the one hand, this causes the pressure of each cooling system in the test device to be too low, and too low a pressure easily leads to inaccurate test results. In order to maintain a more appropriate pressure, the water pump load of the cooling system currently being tested increases. On the other hand, due to the large number of connected cooling systems, it is easy to cause uneven pressure distribution in the test loop including each cooling system and the connecting loop pipe, making it difficult to ensure pressure distribution, which will also lead to inaccurate test results. Therefore, in this embodiment, the number of cooling systems is less than or equal to four. On the one hand, connecting four cooling systems at a time and testing each cooling system one by one on this basis can further improve the test efficiency. On the other hand, it can effectively avoid uneven pressure distribution caused by an excessively long loop, thereby effectively ensuring the accuracy of the test results.

[0066] Embodiment 3

[0067] In this embodiment, a cooling system testing method for an integrated converter is provided, which is applied to the testing device described in any of the above embodiments, such as Figure 2 As shown, the method includes:

[0068] Step 310: based on a first preset flow value, start or adjust the flow regulating component.

[0069] In this embodiment, the first preset flow value is determined according to the flow value of the accompanying test equipment or according to the flow of cooling water of the traction equipment connected to the cooling system on the train. In this way, the flow regulating component adjusts the flow of the connecting loop pipeline to be the same as the flow of the accompanying test equipment or the flow of cooling water of the traction equipment connected to the cooling system on the train, so that the pressure of each cooling system and the connecting loop pipeline is equal to the actual pressure during the operation of the train's cooling system, so as to accurately test the cooling system.

[0070] Step 320, turning on the water pump of the cooling system to be tested, and turning off the water pumps of other cooling systems or keeping the water pumps of other cooling systems turned off.

[0071] In this embodiment, the cooling system currently to be tested is the cooling system that currently needs to be tested, therefore, the water pump of the cooling system currently to be tested is turned on, while the water pumps of other cooling systems that do not participate in the test and serve as accompanying test equipment are turned off or remain turned off, so that other cooling systems that serve as accompanying test equipment are only used for cooling water circulation and provide accompanying test functions, but do not provide power for the water pump. In this embodiment, the water pump of the cooling system currently to be tested is turned on, and the water pump of the cooling system currently to be tested provides power for the circulation of cooling water.

[0072] Step 330: Test the cooling system currently to be tested.

[0073] In this embodiment, a functional test is performed on the cooling system to be tested to test whether the cooling function and other auxiliary functions of the cooling system can work normally.

[0074] Step 340, after testing the cooling system currently to be tested, turn off the water pump of the cooling system currently to be tested, take another cooling system as the next cooling system to be tested according to a preset test sequence, turn on the water pump of the next cooling system to be tested, turn off the water pumps of the other cooling systems or keep the water pumps of the other cooling systems turned off.

[0075] In this embodiment, after testing the current cooling system to be tested, the water pump of the next cooling system to be tested is turned on, and the water pumps of other cooling systems are turned off or kept turned off, preparing for the test of the next cooling system to be tested.

[0076] Step 350: Test the next cooling system to be tested.

[0077] In this embodiment, the next cooling system to be tested is tested according to the above process until all test systems in the test device are tested.

[0078] In this embodiment, the existing cooling systems of the train are connected to each other. During the test, the water pumps of each cooling system are turned on in turn, and each cooling system is tested in turn. During the test, each cooling system serves as a test companion for other cooling systems. There is no need to add new test companion equipment, which reduces the test cost and also reduces the installation and connection time of the companion equipment. The test efficiency is increased by more than 30%, which effectively improves the test efficiency. In addition, by adopting the method disclosed in the present invention, multiple cooling systems are connected by connecting loop pipes, and the leakage test of two systems can be completed at one time. Compared with the two cooling systems maintaining pressure separately, the efficiency is increased by 50%.

[0079] In one embodiment, the step of starting or adjusting the flow regulating component based on the preset flow value includes:

[0080] Maintaining the pressure in each of the cooling systems and the connecting loop pipelines;

[0081] Detecting whether there is leakage in the connection between each of the cooling systems and the connecting loop pipeline;

[0082] When there is no leakage in the connection between each of the cooling systems and the connecting loop pipeline, the flow regulating component is turned on or adjusted based on the first preset flow value.

[0083] In this embodiment, before testing, Figure 3As shown, the connection between each cooling system and the connecting loop pipeline is detected for leaks. When there is a leak in the connection between each cooling system and the connecting loop pipeline, the connection position with the leak is repaired (leakage repaired). After the repair, the connection between each cooling system and the connecting loop pipeline is detected again for leaks. When there is no leak in the connection between each cooling system and the connecting loop pipeline, based on the first preset flow value, the flow regulating component is turned on or adjusted to start the cooling system test. In this embodiment, a loop is connected by forming a plurality of cooling systems and connecting loop pipelines, so that a leakage test can be performed at one time, thereby shortening the leakage detection time. There is no need to perform leakage tests on each cooling system one by one, shortening the preparation time before the test, and further improving the measurement efficiency.

[0084] In one embodiment, before the step of testing the next cooling system to be tested, the step further includes: adjusting the flow regulating component based on the second preset flow value. In this embodiment, before testing the next cooling system, the flow of the test device also needs to be adjusted so that the pressure of each cooling system and the connecting loop pipeline in the test device is equal to the actual pressure of the next cooling system to be tested during the operation of the train, so as to accurately test the cooling system.

[0085] In one embodiment, in step 310, based on the first preset flow value, please combine Figure 3 Before starting or adjusting the flow regulating component, the process also includes: making pipeline connections, that is, connecting the cooling systems and the connecting loop pipelines.

[0086] In one embodiment, the testing device also includes a flow detection component, which is arranged on the connecting loop pipeline, and the flow regulating component is used to detect the flow of the connecting loop pipeline; the step of starting or adjusting the flow regulating component based on the first preset flow value includes: using the flow detection component to detect the real-time flow of the connecting loop pipeline; based on the first preset flow value, adjusting the real-time flow of the flow regulating component so that the real-time flow is equal to the first preset flow value.

[0087] In this embodiment, the flow detection component can detect the flow of the connecting loop pipeline in real time, so that when the flow adjustment component adjusts the flow of the connecting loop pipeline, the tester can know the real-time flow of the connecting loop pipeline in real time, and then accurately adjust the flow of the connecting loop pipeline, so that the real-time flow of the connecting loop pipeline is equal to the first preset flow value.

[0088] In one embodiment, the number of cooling systems is less than or equal to four. It should be understood that when the number of connected cooling systems is greater, the length of the connected pipes is greater, and the overall loop of the test device is greater. On the one hand, the pressure of each cooling system in the test device is too small, and too small a pressure is likely to cause inaccurate test results. In order to maintain a more appropriate pressure, the water pump load of the cooling system currently being tested is increased. On the other hand, due to the large number of connected cooling systems, it is easy to cause uneven pressure distribution of the test loop including each cooling system and the connecting loop pipeline, making it difficult to ensure pressure distribution, which will also lead to inaccurate test results. Therefore, in this embodiment, the number of cooling systems is less than or equal to four. On the one hand, connecting four cooling systems at a time and testing each cooling system one by one on this basis can further improve the test efficiency. On the other hand, it can effectively avoid uneven pressure distribution caused by a long loop, thereby effectively ensuring the accuracy of the test results.

[0089] Embodiment 4

[0090] In this embodiment, Figure 1 As shown, the water outlet of the first cooling system is connected to the water inlet of the second cooling system, and the water inlet of the second cooling system is connected to the water outlet of the first cooling system. When testing the first cooling system, the second cooling system is used as a test system. By adjusting the flow regulating valve in the connecting loop pipeline to ensure that the system's working pressure is consistent with the actual working pressure, the pump of the first cooling system is started to test a cooling system. When testing the second cooling system, the first cooling system is used as a test system. Similar to the test of the first cooling system, the water pump of the second cooling system is started to test the second cooling system. The test flow chart is shown in Figure 3 As shown. Connect the water cooling systems of the two motors and set a regulating valve between the connecting pipes. When testing the cooling system, if one of the cooling systems needs to be tested, the other one will be used as a companion test device. By adjusting the valve on the connecting pipe, ensure that the cooling is consistent with the actual working point.

[0091] By adopting the above method, the test equipment is reduced, the test cost is reduced, and the installation and connection time of the test equipment is also reduced, and the test efficiency is improved by more than 30%. In addition, by adopting the method of the present invention, the two cooling systems are connected through the connecting pipeline, and the leakage test of the two systems can be completed at one time, which is 50% more efficient than the two cooling systems maintaining pressure separately.

[0092] In the embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the above-mentioned module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0093] It should be noted that in the present disclosure, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element limited by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0094] Although the embodiments disclosed in the present disclosure are as above, the above contents are only embodiments adopted for facilitating the understanding of the present disclosure and are not intended to limit the present disclosure. Any technician in the technical field to which the present disclosure belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present disclosure, but the scope of patent protection of the present disclosure shall still be subject to the scope defined in the attached claims.

Claims

1. A cooling system test device for an integrated converter, characterized in that: include: flow regulating components, connecting loop piping and at least two cooling systems located on the train; The flow regulating component is arranged on the connecting loop pipeline, and the flow regulating component is used to regulate the flow of the connecting loop pipeline; The cooling systems are connected in sequence; Wherein, the water inlet of one cooling system is connected to one end of the connecting loop pipeline, and the other end of the connecting loop pipeline is connected to the water outlet of another cooling system, and each cooling system is connected to the connecting loop pipeline to form a loop; Each of the cooling systems is used: when one of the cooling systems is used as the cooling system to be tested, the remaining cooling systems are used as accompanying test equipment.

2. The device according to claim 1, characterized in that The cooling system comprises a first cooling system and a second cooling system; The water inlet of the first cooling system is connected to one end of the connecting loop pipeline, the water outlet of the first cooling system is connected to the water inlet of the second cooling system, and the water outlet of the second cooling system is connected to the other end of the connecting loop pipeline.

3. The device according to claim 1, characterized in that It also includes a flow detection component, which is arranged on the connecting loop pipeline, and the flow regulating component is used to detect the flow of the connecting loop pipeline.

4. The device according to claim 1, characterized in that The flow regulating component includes a flow regulating valve.

5. The device according to claim 1, characterized in that The number of the cooling systems is less than or equal to four.

6. A method for testing a cooling system of an integrated converter, characterized in that: The test device as claimed in any one of claims 1 to 5 comprises: Based on a first preset flow value, turning on or adjusting the flow regulating component; Turn on the water pump of the cooling system to be tested, and turn off the water pumps of other cooling systems or keep the water pumps of other cooling systems turned off; Test the cooling system currently under test; After testing the cooling system to be tested currently, turning off the water pump of the cooling system to be tested currently, taking another cooling system as the next cooling system to be tested according to a preset test sequence, turning on the water pump of the next cooling system to be tested, and turning off the water pumps of the other cooling systems or keeping the water pumps of the other cooling systems turned off; The next cooling system to be tested is tested.

7. The method according to claim 6, characterized in that The step of starting or adjusting the flow regulating component based on the preset flow value includes: Maintaining the pressure in each of the cooling systems and the connecting loop pipelines; Detecting whether there is leakage in the connection between each of the cooling systems and the connecting loop pipeline; When there is no leakage in the connection between each of the cooling systems and the connecting loop pipeline, the flow regulating component is turned on or adjusted based on the first preset flow value.

8. The method according to claim 6, characterized in that The step of testing the next cooling system to be tested also includes: Based on the second preset flow value, the flow regulating component is adjusted.

9. The method according to claim 6, characterized in that The testing device further comprises a flow detection component, wherein the flow detection component is arranged on the connecting loop pipeline, and the flow regulating component is used to detect the flow of the connecting loop pipeline; The step of starting or adjusting the flow regulating component based on the first preset flow value includes: Using the flow detection component to detect the real-time flow of the connecting loop pipeline; Based on the first preset flow value, the real-time flow of the flow regulating component is adjusted so that the real-time flow is equal to the first preset flow value.

10. The method according to claim 6, characterized in that The number of the cooling systems is less than or equal to four.

Images