A water pump high-temperature durability test system

Abstract

The utility model relates to a kind of water pump high-temperature endurance test system, belong to water pump test field, it includes water pump working cycle component, high-temperature environment box component, backwater tank circulation component and control system.The water pump working cycle component is equipped with medium tank, tube bundle electric heater and multiple independent test loops, can realize medium temperature regulation and control and multiple water pump simultaneous test;High-temperature environment box built-in electric heater and circulating fan, provide stable high-temperature test environment for the water pump to be tested;Backwater tank circulation component is used to overflow medium and realizes medium replenishment;Control system integrates PLC and industrial computer, realizes the automation management and data acquisition of test process.The system test function is rich, dismounting is convenient, cost is low, safe and reliable, can effectively satisfy the high-temperature endurance test demand of multiple model water pump, improve water pump research and development test efficiency, reduce enterprise research and development cost.

Description

Technical Field

[0001] This utility model relates to the field of water pump testing technology, specifically a water pump high-temperature durability testing system. Background Technology

[0002] In the automotive industry, the engine, as the core power source, directly affects the overall vehicle performance and lifespan through the stable control of its operating temperature. The engine block contains multiple cooling water circulation channels, which are connected to the radiator (commonly known as the car's water tank) at the front of the car via water pipes, forming a complete water circulation cooling system. The water pump installed at the engine's outlet plays a crucial role; through the suction generated by its operation, it continuously pumps hot water from the engine block's water channels to the car's water tank. The cool air from the car's movement further cools the water tank, effectively cooling the engine and ensuring stable operation within a suitable temperature range.

[0003] As the automotive industry continues to demand higher engine performance, the reliability and durability of the water pump, a core component of the engine cooling system, have become crucial factors affecting overall vehicle quality. Therefore, rigorous testing and verification, especially long-term high-temperature durability testing, must be conducted during the water pump design and development phase to simulate the water pump's operation under complex real-world conditions, ensuring the product meets design standards and usage requirements.

[0004] Currently, most common water pump testing equipment consists of large, specialized devices. While these devices offer relatively comprehensive functionality, they suffer from drawbacks such as high purchase costs, a limited number of samples that can be tested simultaneously, and insufficient flexibility in testing conditions. Particularly in scenarios involving the simultaneous development of multiple water pumps, existing equipment struggles to achieve multi-channel parallel testing, resulting in long testing cycles and low project efficiency. Furthermore, traditional testing systems are inadequate in their design regarding the accuracy of medium temperature control, the realism of environmental simulation, and the recovery of abnormal media, impacting the accuracy and reliability of the tests.

[0005] Therefore, there is an urgent need for a water pump high-temperature durability testing system that is low-cost, offers comprehensive testing conditions, supports multi-channel parallel operation, is flexible in operation, and is safe and reliable. Utility Model Content

[0006] To address the aforementioned issues, this invention provides a low-cost, comprehensive testing system for high-temperature durability testing of water pumps that supports multiple parallel processes.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a high-temperature durability testing system for water pumps, comprising...

[0008] A water pump working circulation assembly is used to provide the medium at the required test temperature and to circulate the medium, and is connected to the high-temperature environment chamber assembly.

[0009] The high-temperature environment chamber assembly is used to provide the high-temperature testing environment required for the test of the water pump and is connected to the return water tank circulation assembly.

[0010] The return water tank circulation assembly is used to collect and return the overflow medium, and is connected to the water pump working circulation assembly;

[0011] The control system is electrically connected to the water pump working circulation assembly, the high-temperature environment chamber assembly, and the return water tank circulation assembly to achieve control and detection.

[0012] Preferably, the water pump working circulation assembly includes a horizontally arranged medium tank containing concentrated ethylene glycol. A tube bundle electric heater is located at both ends of the medium tank, and a level gauge is located at either end of the medium tank. The top of the medium tank is equipped with a return water inlet, a medium replenishment inlet, a safety pressure relief valve, a temperature sensor, a pressure sensor, and an exhaust valve. A manual ball valve is located on the pipeline connected to the return water inlet, a manual ball valve is located on the pipeline at the medium replenishment inlet, and a drain outlet is located at the bottom of the medium tank. A manual ball valve is located on the pipeline at the drain outlet.

[0013] The bottom of the medium tank is also provided with at least one test pipeline. Each test pipeline is provided with a pneumatic ball valve, a second temperature sensor, a water pump to be tested, a second pressure sensor, an electric proportional valve and a flow meter in sequence. The pneumatic ball valve is connected to the inlet of the water pump to be tested, and the electric proportional valve is connected to the outlet of the water pump to be tested.

[0014] The high-temperature environment chamber assembly includes an environment chamber, which contains a heating chamber and two symmetrically arranged circulating fans and electric heaters on the left and right sides of the heating chamber. Each electric heater is located directly below the circulating fan on the same side, and each electric heater is equipped with a temperature sensor. The heating chamber has an air duct baffle and a liquid receiving tray at its top and bottom, respectively. The liquid receiving tray has a medium collection port at its bottom. The pipe connected to the medium collection port passes through the heating chamber and the bottom of the environment chamber, and a manual ball valve is provided on the pipe. The air duct baffle is used to separate the circulating air ducts of the two circulating fans. The environment chamber has a temperature sensor at its top, and the probe of the temperature sensor extends into the heating chamber.

[0015] The test pipeline of the water pump working circulation assembly passes through the environmental chamber, and the water pump to be tested is placed on the liquid receiving tray in the heating chamber;

[0016] The return water tank circulation assembly includes a return water tank. The medium inlet on one side of the return water tank is connected to the medium collection port of the high temperature environment box assembly. The other side of the return water tank is equipped with a level gauge, and the medium outlet above the other side of the return water tank is connected in sequence to a manual ball valve, a Y-type filter, and a return water self-priming pump through a pipeline. The end of the return water self-priming pump away from the Y-type filter is connected to the return water port of the water pump working circulation assembly.

[0017] Preferably, the control system includes a test power supply, test software, an industrial computer, a display, a PLC module, a PID meter, a data acquisition module, and measurement sensors. The PLC module, display, and PID meter are electrically connected to the industrial computer, and the measurement sensors are electrically connected to the industrial computer through the data acquisition module. The test power supply powers the entire system, and the test software is installed in the industrial computer.

[0018] Preferably, the PID instrument is electrically connected to the tube bundle electric heater and temperature sensor of the water pump working cycle assembly to achieve intelligent regulation of the medium temperature.

[0019] Preferably, the PLC module is electrically connected to the pneumatic ball valve, temperature sensor 2, pressure sensor 2, electric proportional valve, and flow meter of the water pump working cycle assembly to achieve closed-loop control of flow and pressure.

[0020] Preferably, the return water tank is equipped with a level switch, which is electrically connected to the return water self-priming pump. When the level reaches a set value, the return water self-priming pump is triggered to start.

[0021] Preferably, the ethylene glycol concentrate is a 99.5% ethylene glycol concentrate.

[0022] Preferably, both the inlet and outlet of the water pump under test adopt a quick-connect chuck interface.

[0023] Preferably, the bottom of the medium tank is provided with 8 test pipelines, which are arranged from left to right. The pneumatic ball valve, temperature sensor 2, pressure sensor 2, electric proportional valve, and flow meter on each test pipeline are respectively pneumatic ball valve 1-8, temperature sensor 2 1-8, pressure sensor 2 1-8, electric proportional valve 1-8, and flow meter 1-8. The water pump to be tested is water pump 1-8.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. This high-temperature durability testing system for water pumps possesses a wealth of testing functions, capable of accurately providing different ambient and medium temperatures to meet the diverse needs of high-temperature durability testing of water pumps. The test medium can be heated via a tube bundle electric heater on the medium tank, achieving precise temperature control for different media. With the electric heater in the high-temperature environment chamber working in conjunction with a circulating fan, a stable and adjustable high-temperature environment can be created for the water pump under test. Simultaneously, the system can monitor key parameters such as temperature, pressure, and flow rate of the water pump under test in real time. By reading the voltage and current data of the test power supply and the water pump itself, it accurately calculates the pump's operating power and efficiency, providing comprehensive and reliable data support for water pump performance evaluation.

[0026] 2. In this utility model, the interfaces of the water pump inlet and outlet are both designed with quick-connect chucks, which are easy to disassemble and assemble. The system has multiple test pipelines with uniform structure. By replacing the quick-connect chucks of different sizes, it can support the testing of multiple water pumps and quickly adapt to the testing requirements of different projects and different models of water pumps, which greatly improves the test adaptability of the system and improves the test efficiency.

[0027] 3. In this utility model, an electric proportional valve is installed at the outlet of the water pump in the working circulation pipeline of the water pump. The operating pressure of multiple water pumps (up to 8) can be adjusted at the same amplitude through the testing software. No manual operation is required, which effectively avoids the error caused by human operation, ensures the consistency and accuracy of test parameters, and reduces the intensity of manual labor.

[0028] 4. The level gauge, temperature sensor, flow meter, and pressure sensor of this utility model all include visual functions, which facilitates daily inspection and maintenance. The level gauges installed on both the medium tank and the return water tank can directly read the liquid level. By monitoring the liquid level in the medium tank in real time, it can effectively prevent equipment damage caused by incomplete medium intake by the water pump under test due to low liquid level. At the same time, monitoring the liquid level in the return water tank can promptly detect and handle abnormal situations such as sudden pipe bursts in the return water pump circulation pipeline, preventing the medium from flooding the heating chamber of the high-temperature environment box and ensuring the safe operation of the system.

[0029] 5. This utility model has a Y-type filter installed on the circulation pipeline of the return water tank, which can effectively filter out impurities in the medium, prevent impurities from entering the working circulation pipeline of the water pump and causing blockage, ensure that the test process is not affected, and improve the stability of system operation.

[0030] 6. This utility model is designed with a safety pressure relief valve and an exhaust valve on the top of the medium tank, providing dual safety protection measures to ensure the safe operation of the system. During normal testing, when a small amount of water in the medium tank evaporates due to heating, the water vapor can be smoothly discharged through the exhaust valve, keeping the tank pressure within a safe range. In special circumstances such as blockage of the exhaust valve or abnormal power of the tube bundle electric heater, which causes the pressure in the medium tank to rise to the safety threshold, the safety pressure relief valve will automatically open to discharge some of the steam, medium, or a mixture of both, so that the pressure in the medium tank can be quickly restored to a safe range, avoiding safety accidents caused by excessive pressure.

[0031] 7. This utility model extensively uses standard parts and commercially available parts, and the processing technology is simple, significantly reducing manufacturing costs and maintenance difficulty. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the working circulation component of the water pump in this utility model;

[0034] Figure 3 This is a schematic diagram of the high-temperature environment chamber component structure of this utility model;

[0035] Figure 4 This is a schematic diagram of the water return tank circulation component structure in this utility model;

[0036] Figure 5 This is a schematic diagram of the control system structure in this utility model. Detailed Implementation

[0037] The following will combine Figure 1-5 The present invention will be described in detail below. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0038] A high-temperature durability testing system for water pumps, comprising:

[0039] The water pump working circulation assembly 1 is used to provide the medium at the required test temperature and realize the medium circulation, and is connected to the high temperature environment chamber assembly.

[0040] High-temperature environment chamber assembly 2 is used to provide the high-temperature test environment required for the test of the water pump under test, and is connected to the return water tank circulation assembly;

[0041] The return water tank circulation assembly 3 is used to collect and return the overflow medium, and is connected to the water pump working circulation assembly;

[0042] The control system 4 is electrically connected to the water pump working circulation component, the high temperature environment chamber component, and the return water tank circulation component to achieve control and detection.

[0043] In a specific embodiment, the water pump working circulation assembly includes a horizontally arranged medium tank 5, which contains ethylene glycol concentrate with a specific concentration of 99.5%. A tube bundle electric heater 6 is provided at both ends of the medium tank, and a level gauge 8 is provided at either end of the medium tank. The top of the medium tank is equipped with a return water port 9, a medium replenishment port 10, a safety pressure relief valve 11, a temperature sensor 12, a pressure sensor 13, and an exhaust valve 14. A manual ball valve 15 is provided on the pipeline connected to the return water port for returning water to the return water tank, controlling the opening and closing of the pipeline. A manual ball valve 16 is provided on the pipeline at the medium replenishment port for replenishing the medium, controlling the opening and closing of the pipeline. Furthermore, a drain port 17 for cleaning and wastewater discharge is provided at the bottom of the medium tank, and a manual ball valve 18 is provided on the pipeline at the drain port to control the opening and closing of the pipeline.

[0044] At least one test pipeline is also provided at the bottom of the medium tank. The specific number of test pipelines corresponds to the number of water pumps to be tested in actual working conditions. Each test pipeline is equipped with a pneumatic ball valve 19, a second temperature sensor 20, a water pump to be tested 21, a second pressure sensor 22, an electric proportional valve 23, and a flow meter 24 in sequence. The pneumatic ball valve is connected to the inlet 25 of the water pump to be tested, and the electric proportional valve is connected to the outlet 26 of the water pump to be tested. At the same time, the inlet and outlet of the water pump to be tested both adopt a quick-connect chuck interface, which is convenient for disassembly and assembly.

[0045] For example, the bottom of the medium tank is equipped with 8 test pipelines, which are arranged from left to right. The pneumatic ball valve, temperature sensor 2, pressure sensor 2, electric proportional valve, and flow meter on each test pipeline are respectively pneumatic ball valve 1-8, temperature sensor 2 1-8, pressure sensor 2 1-8, electric proportional valve 1-8, and flow meter 1-8. The water pump to be tested is water pump 1-8.

[0046] The high-temperature environment chamber assembly includes an environment chamber 27, which contains a heating chamber 28 and two symmetrically arranged circulating fans 29 and electric heaters 30 on the left and right sides of the heating chamber. Each electric heater is located directly below the circulating fan on the same side, and each electric heater is equipped with a temperature sensor 31 to monitor its temperature and prevent it from overheating. The top and bottom of the heating chamber are respectively equipped with a duct baffle 32 and a liquid receiving tray 33. The bottom of the liquid receiving tray is equipped with a medium collection port 35. The pipeline connected to the medium collection port runs through the heating chamber and the bottom of the environment chamber, and a manual ball valve 36 is installed on the pipeline to control the opening and closing of the pipeline. The manual ball valve 36 is normally open. The top of the environment chamber is equipped with a temperature sensor 34, and the probe of the temperature sensor 34 extends into the heating chamber to monitor the ambient temperature inside the heating chamber, i.e., the operating temperature of the water pump under test. Because the heating chamber is relatively long in actual applications, at least two temperature sensors 4 are generally provided to facilitate more accurate temperature testing.

[0047] Each test pipeline of the water pump working circulation assembly passes through the environmental chamber, and the water pump to be tested is placed on the liquid receiving tray inside the heating chamber;

[0048] like Figure 1 As shown, the left-side circulating fan draws air from the bottom left of the heating chamber. The lower-temperature air is heated by the left-side electric heater and then blown downwards from the top of the heating chamber. The right-side circulating fan draws air from the bottom right of the heating chamber. The lower-temperature air is heated by the right-side electric heater and then blown downwards from the top of the heating chamber. A duct partition separates the two circulating fan ducts, ensuring even downward airflow and uniform temperature within the heating chamber. By monitoring the temperature of the heating and heat exchange process and adjusting the power of the electric heater and the speed of the circulating fan, precise temperature control of the high-temperature environment chamber is achieved, providing a stable ambient temperature for water pump testing.

[0049] The return water tank circulation assembly includes a return water tank 37. A medium inlet on one side of the return water tank is connected to the medium collection port of the high-temperature environment chamber assembly via a pipeline. A level gauge 38 is located on the other side of the return water tank, and a medium outlet on the upper side of the other side is connected in sequence via a pipeline to a manual ball valve 39, a Y-type filter 40, and a return water self-priming pump 41. The end of the return water self-priming pump furthest from the Y-type filter is connected to the return water port of the pump working circulation assembly via a pipeline. When the water pump under test is replaced or other abnormal situations occur, the leaked medium liquid is collected by the receiving tray, flows through the manual ball valve 4, and then flows into the return water tank from the medium collection port. When the medium level in the return water tank reaches a specific height, a level switch signal is triggered, activating the return water self-priming pump. The medium in the return water tank passes through the manual ball valve 5 and the Y-type filter in sequence, and is then pumped into the medium tank through the return water port of the medium tank, realizing the recovery and recycling of the medium, reducing medium waste, and lowering testing costs. Installing a Y-type filter can effectively filter out impurities in the medium, preventing them from entering the water pump's working circulation pipeline and causing blockages, ensuring that the testing process is not affected, and improving the stability of system operation.

[0050] The control system includes a test power supply 42, test software 43, an industrial computer 44, a display 45, a PLC module 46, a PID meter 47, a data acquisition module 48, and a measurement sensor 49. The PLC module, display, and PID meter are electrically connected to the industrial computer, and the measurement sensor is electrically connected to the industrial computer through the data acquisition module. The test power supply powers the entire system, and the test software is installed in the industrial computer.

[0051] Specifically, the PID instrument is electrically connected to the tube bundle electric heater and temperature sensor of the water pump working cycle assembly. By adjusting the input power of the tube bundle electric heater through the PID and detecting it in real time through the temperature sensor, intelligent adjustment of the medium temperature can be achieved.

[0052] The PLC module is electrically connected to the pneumatic ball valve, temperature sensor 2, pressure sensor 2, electric proportional valve, and flow meter of the water pump working cycle assembly, enabling closed-loop control of flow and pressure.

[0053] The measurement sensors in this control system include all temperature sensors, pressure sensors, flow sensors, and level sensors in the system. These sensors are used to collect temperature, pressure, flow, and level signals from the water pump working circulation component, the high-temperature environment chamber component, and the return water tank circulation component, respectively. This allows for the regulation of parameters such as voltage, current, speed, and flow of the water pump under test, thereby achieving automation, intelligence, and safety and reliability in the high-temperature durability testing of the water pump.

[0054] The level gauge, temperature sensor, flow meter, and pressure sensor of this invention all include visual functions, facilitating daily inspection and maintenance. The level gauges installed on both the medium tank and the return water tank allow for direct reading of the liquid level. Real-time monitoring of the medium tank level effectively prevents equipment damage caused by incomplete medium intake by the test pump due to low liquid levels. Simultaneously, monitoring the return water tank level allows for timely detection and handling of abnormal situations such as sudden pipe bursts in the return water pump circulation pipeline, preventing the medium from flooding the heating chamber of the high-temperature environment box and ensuring the safe operation of the system.

[0055] Secondly, by designing a safety pressure relief valve and an exhaust valve on the top of the medium tank, dual safety protection measures ensure the safe operation of the system. During normal testing, when a small amount of water in the medium tank is heated and evaporates, the water vapor can be smoothly discharged through the exhaust valve, keeping the tank pressure within a safe range. When special circumstances occur, such as blockage of the exhaust valve or abnormal power of the tube bundle electric heater, causing the pressure in the medium tank to rise to the safe threshold, the safety pressure relief valve will automatically open to discharge some steam, medium, or a mixture of both, so that the pressure in the medium tank can be quickly restored to a safe range, avoiding safety accidents caused by excessive pressure.

[0056] The specific procedures during implementation are as follows:

[0057] (1) Initial startup and replenishment of medium: When the system is started for the first time, the water pump to be tested has been installed and all valves on the water pump test pipeline have been opened. Open the manual ball valve 2 and replenish the medium into the medium tank through the medium replenishment port. Observe the value of the liquid level gauge 1. When the liquid level reaches a certain height, start the water pump to be tested. After a certain period of operation, the air in the system will be discharged from the exhaust valve at the top of the medium tank. When the required liquid level is reached, stop the medium replenishment, close the manual ball valve 2, and complete the initial replenishment.

[0058] (2) Replenishing the medium in the medium tank during operation: Due to the evaporation of the medium and the overflow of the medium caused by the disassembly and assembly of the water pump to be tested, the liquid level in the medium tank will drop. It is necessary to check the liquid level in the medium tank and replenish the medium from time to time. At this time, the same operation as replenishing the medium during the first start-up can be used to replenish the medium. Open the manual ball valve two and replenish directly through the medium replenishment pipe port. Alternatively, the medium can be added to the return water tank, and the manual ball valve one and manual ball valve five can be opened at the same time. The medium in the return water tank (including the added medium and the medium overflowing from the medium collection pipe port at the bottom of the liquid receiving tray) enters the medium tank through the return water pipe port at the top of the medium tank under the action of the return water self-priming pump, so as to realize the automatic replenishment of the medium.

[0059] The system has multiple test pipelines with a uniform structure. By replacing the quick-connect chucks of different sizes, it can support multi-channel water pump testing and quickly adapt to the testing needs of different projects and different models of water pumps, which greatly improves the system's test adaptability and testing efficiency.

[0060] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A high-temperature durability testing system for water pumps, characterized in that: include The water pump working circulation assembly (1) is used to provide the medium at the required test temperature and realize the medium circulation, and is connected to the high temperature environment chamber assembly; The high-temperature environment chamber assembly (2) is used to provide the high-temperature test environment required for the test of the water pump and is connected to the return water tank circulation assembly. The return water tank circulation assembly (3) is used to collect and return the overflow medium and is connected to the water pump working circulation assembly; The control system (4) is electrically connected to the water pump working circulation component, the high temperature environment chamber component and the return water tank circulation component to realize control and detection.

2. The high-temperature durability testing system for water pumps according to claim 1, characterized in that: The water pump working circulation assembly includes a horizontally arranged medium tank (5), which contains concentrated ethylene glycol. A tube bundle electric heater (6) is provided at both ends of the medium tank, and a level gauge (8) is provided at any end of the medium tank. The top of the medium tank is provided with a return water port (9), a medium replenishment port (10), a safety pressure relief valve (11), a temperature sensor (12), a pressure sensor (13), and an exhaust valve (14). A manual ball valve (15) is provided on the pipeline connected to the return water port, and a manual ball valve (16) is provided on the pipeline at the medium replenishment port. A drain port (17) is provided at the bottom of the medium tank, and a manual ball valve (18) is provided on the pipeline at the drain port. The bottom of the medium tank is also provided with at least one test pipeline. Each test pipeline is provided with a pneumatic ball valve (19), a second temperature sensor (20), a water pump to be tested (21), a second pressure sensor (22), an electric proportional valve (23), and a flow meter (24) in sequence. The pneumatic ball valve is connected to the inlet (25) of the water pump to be tested, and the electric proportional valve is connected to the outlet (26) of the water pump to be tested. The high-temperature environment chamber assembly includes an environment chamber (27), which contains a heating chamber (28) and two symmetrically arranged circulating fans (29) and electric heaters (30) on the left and right sides of the heating chamber. Each electric heater is located directly below the circulating fan on the same side, and each electric heater is equipped with a temperature sensor (31). The top and bottom of the heating chamber are respectively provided with a duct partition (32) and a liquid receiving tray (33). The bottom of the liquid receiving tray is provided with a medium collection port (35). The pipe connected to the medium collection port passes through the heating chamber and the bottom of the environment chamber, and a manual ball valve (36) is provided on the pipe. The duct partition is used to separate the circulating ducts of the two circulating fans. The top of the environment chamber is provided with a temperature sensor (34), and the probe of the temperature sensor (4) extends into the heating chamber. The test pipeline of the water pump working circulation assembly passes through the environmental chamber, and the water pump to be tested is placed on the liquid receiving tray in the heating chamber; The return water tank circulation assembly includes a return water tank (37). The medium inlet on one side of the return water tank is connected to the medium collection port of the high temperature environment box assembly. The other side of the return water tank is provided with a level gauge (38), and the medium outlet above the other side of the return water tank is connected in sequence to a manual ball valve (39), a Y-type filter (40), and a return water self-priming pump (41) through a pipeline. The end of the return water self-priming pump away from the Y-type filter is connected to the return water port of the water pump working circulation assembly.

3. The high-temperature durability testing system for water pumps according to claim 2, characterized in that: The control system includes a test power supply (42), test software (43), an industrial computer (44), a display (45), a PLC module (46), a PID meter (47), a data acquisition module (48), and a measurement sensor (49). The PLC module, the display, and the PID meter are electrically connected to the industrial computer. The measurement sensor is electrically connected to the industrial computer through the data acquisition module. The test power supply powers the entire system. The test software is installed in the industrial computer.

4. The high-temperature durability testing system for water pumps according to claim 3, characterized in that: The PID instrument is electrically connected to the tube bundle electric heater and temperature sensor of the water pump working cycle assembly.

5. The high-temperature durability testing system for water pumps according to claim 3, characterized in that: The PLC module is electrically connected to the pneumatic ball valve, temperature sensor 2, pressure sensor 2, electric proportional valve, and flow meter of the water pump working cycle assembly.

6. The high-temperature durability testing system for water pumps according to claim 2, characterized in that: The return water tank is equipped with a level switch, which is electrically connected to the return water self-priming pump. When the level reaches the set value, the return water self-priming pump is triggered to start.

7. The high-temperature durability testing system for water pumps according to claim 2, characterized in that: The ethylene glycol concentrate is a 99.5% concentration ethylene glycol concentrate.

8. The high-temperature durability testing system for water pumps according to claim 2, characterized in that: The inlet and outlet of the water pump under test both use quick-connect chuck interfaces.

9. The high-temperature durability testing system for water pumps according to claim 2, characterized in that: The bottom of the medium tank is equipped with 8 test pipelines, which are arranged from left to right. The pneumatic ball valve, temperature sensor 2, pressure sensor 2, electric proportional valve, and flow meter on each test pipeline are respectively pneumatic ball valve 1-8, temperature sensor 2 1-8, pressure sensor 2 1-8, electric proportional valve 1-8, and flow meter 1-8. The water pump to be tested is water pump 1-8.

Images