Intelligent water cooling system test system and method

Abstract

The invention discloses an intelligent water cooling system test system and method, and relates to the technical field of wind driven generators, and the system comprises a liquid expansion and supplement pump, a water return pump, an electric heater, a temperature sensor, a pressure sensor, a flowmeter, a manual valve, an electric valve, a pipeline system, a variable frequency heat exchanger, and a PLC control system. The real operation working condition of the water cooling system in the wind generating set is simulated through the action combination of each execution element and the variable frequency heat exchanger in the PLC control system, the water cooling system is tested under the simulated working condition, and the test data is recorded through the PLC control system. The system is high in intelligent degree, can effectively replace a traditional manual test, especially a coordinated control mode of a variable frequency heat exchanger and an electric heater, and can be used for testing the air tightness of a water cooling system, the pressure of a safety valve, sensor calibration, the function test of a three-way valve or a temperature control valve, the function test of an electric heater and the hydraulic performance test. And the test efficiency and precision are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine generators, and in particular to an intelligent water cooling system testing system and method. Background Art

[0002] Generators, converters, speed-increasing gearboxes, transformers, etc. in wind turbines generate heat during operation. As the capacity of a single machine continues to increase, the heat generated by each device is also increasing. If the heat generated cannot be balanced quickly and reliably, it will cause damage to the equipment, and in severe cases, the entire wind turbine will be damaged.

[0003] At present, wind power main engine manufacturers, especially foreign main engine manufacturers, have gradually switched from air cooling to centralized water cooling systems for cooling components. Considering the reliability requirements of the whole machine operation, the reliability requirements of the water cooling system, especially the water cooling pump station, are becoming increasingly important.

[0004] Currently, the water cooling system is tested manually, with manual pipe connection and operation to test the circulation flow of the pump station. However, key parameters such as air tightness, sensor calibration, hydraulic performance, etc. cannot be tested efficiently and intelligently. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an intelligent water cooling system testing system, including a water tank, a control cabinet and a heat exchanger, wherein a water cooling system overpressure circuit, a water cooling system liquid replenishment circuit, a water pump circuit, a first tested shunt circuit and a second tested shunt circuit are sequentially arranged between the water tank and the tested water cooling system, the water cooling system liquid replenishment circuit includes a first manual ball valve, a liquid replenishment pump and a first solenoid valve sequentially arranged along the water tank to the tested water cooling system, the water pump circuit includes a second manual ball valve, a second solenoid valve and a third manual ball valve sequentially arranged along the water tank to the tested water cooling system, the first tested shunt circuit includes a fourth manual ball valve, a first electromagnetic flowmeter and a third solenoid valve sequentially arranged along the water tank to the tested water cooling system, the second tested shunt circuit includes a fifth manual ball valve, a second electromagnetic flowmeter and a fourth solenoid valve sequentially arranged along the water tank to the tested water cooling system; A sixth manual ball valve is connected between the second manual ball valve and the second solenoid valve, the other end of the sixth manual ball valve is connected between the fourth manual ball valve and the first electromagnetic flowmeter, a seventh manual ball valve is connected between the fifth manual ball valve and the second electromagnetic flowmeter, the other end of the seventh manual ball valve is connected between the fourth manual ball valve and the first electromagnetic flowmeter, and the sixth manual ball valve and the seventh manual ball valve are connected to each other; a first electric ball valve is connected between the fourth manual ball valve and the sixth manual ball valve, and a second electric ball valve is connected between the fifth manual ball valve and the seventh manual ball valve; a return water pump is connected between the first electric ball valve and the second electric ball valve, and the other end of the return water pump is connected to the water tank; a fifth solenoid valve is connected between the liquid replenishment pump and the first solenoid valve, the other end of the fifth solenoid valve is connected to a heat exchanger, the other end of the heat exchanger is connected to a filter, and the other end of the filter is connected to the water tank; An electric heater is provided in the water tank; a pressure sensor for detecting its internal pressure and a temperature sensor for detecting the temperature of the cooling medium inside the water cooling system are provided in the tested water cooling system; a PLC control system is integrated in the control cabinet, and the PLC control system is electrically connected to the pressure sensor, the temperature sensor, the first electromagnetic flowmeter, the second electromagnetic flowmeter, the heat exchanger, the return water pump and all the solenoid valves and electric ball valves.

[0006] The technical solution further defined in the present invention is: Further, the PLC control system includes an air tightness test module, a safety valve pressure test module, a sensor calibration module, a three-way valve or temperature control valve function determination module, an electric heater function test module, and a hydraulic performance test module; The air tightness test module and the safety valve pressure test module detect the air tightness of the tested water cooling system and the pressure performance of the safety valve in the tested water cooling system by recording and calculating the detection pressure values ​​of the pressure sensors under different opening and closing states of each valve. When the water cooling system reaches the set pressure value after filling, the sensor calibration module reads and compares the detection values ​​of the pressure sensor and the temperature sensor to detect whether the pressure sensor and the temperature sensor are qualified; The three-way valve or temperature control valve function determination module detects whether the function of the three-way valve or temperature control valve in the tested water cooling system meets the design requirements by recording and calculating the flow values ​​of the first electromagnetic flowmeter and the second electromagnetic flowmeter at different temperatures and valve openings; The electric heater function test module controls the power of the electric heater and the heat exchanger and reads and compares the temperature detection value of the temperature sensor to detect whether the heating power of the electric heater matches; The hydraulic performance test module records the flow output of the corresponding main circulation pump in the tested water cooling system under different temperatures and pressures, and fits the read data into a relationship curve between flow and pressure. By judging whether this relationship curve meets the original design requirements of the pump, it detects whether the hydraulic performance is qualified.

[0007] In the intelligent water cooling system testing system described above, when the air tightness testing module performs an air tightness test, the first solenoid valve and the liquid replenishing pump are opened to fill the water cooling system under test with liquid. When the pressure of the water cooling system under test reaches the set pressure value P0, the first solenoid valve and the liquid replenishing pump are closed. The air tightness testing module automatically records and calculates the drop value of the pressure value of the water cooling system under test within the set time. When the drop value is less than or equal to the preset pressure threshold, the air tightness test is qualified.

[0008] In the aforementioned intelligent water cooling system test system, when the safety valve pressure test module performs the safety valve pressure test, the first solenoid valve, the first manual ball valve and the liquid filling pump are opened to fill the water cooling system under test with liquid. When the pressure stabilizes and reaches the system set time, that is, the pressure reaches the maximum value and the safety valve pressure test module samples once every 0.5S, and the sampling deviation does not exceed 5% for 5 consecutive times, the safety valve pressure test module automatically records the pressure value P1 of the water cooling system under test and compares it with the set pressure P s1 For comparison, if (|P s1 -P1| / P s1 )×100% is less than the preset threshold, the pressure performance test of the safety valve is qualified.

[0009] In the aforementioned intelligent water cooling system testing system, when the sensor calibration module is calibrating, the first solenoid valve and the liquid replenishing pump are opened to fill the water cooling system under test with liquid. When the pressure of the water cooling system under test reaches the set pressure value P0, the sensor calibration module automatically reads the pressure value P2 of the pressure sensor and the temperature value T1 of the temperature sensor in the water cooling system under test, and compares the values ​​with the calibrated pressure sensor and temperature sensor respectively. If the deviation percentage is within the set range, the pressure sensor and temperature sensor are qualified.

[0010] In the aforementioned intelligent water cooling system test system, when the three-way valve or temperature control valve function measurement module performs function measurement, the second solenoid valve, the third solenoid valve, the second manual ball valve, the fourth manual ball valve and the fifth manual ball valve are opened, the tested water cooling system is operated, the electric heater is turned on, and the three-way valve or temperature control valve function measurement module records the flow values ​​of the first electromagnetic flow meter and the second electromagnetic flow meter at different temperatures. As the temperature of the cooling medium rises, if the flow value of the first electromagnetic flow meter shows a decreasing trend, and the flow value of the second electromagnetic flow meter shows an increasing trend, then the switching function of the three-way valve or the temperature control valve is tested to be qualified; After the switching function is tested and qualified, the flow value Q passing through the first electromagnetic flowmeter is set in the PLC control system. s The PLC control system automatically adjusts the three-way valve opening and the cooling medium temperature. The three-way valve or temperature control valve function measurement module automatically records the first electromagnetic flow meter display value Q1, and runs according to the program cycle and flow value Q s Perform deviation percentage calculation, if (|Q s -Q1| / Q s ) × 100% is less than the set value, the function of the three-way valve or temperature control valve meets the design requirements.

[0011] In the aforementioned intelligent water cooling system test system, when the electric heater function test module performs the electric heater function test, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the sixth manual ball valve and the seventh manual ball valve are opened, the second manual ball valve, the fourth manual ball valve and the fifth manual ball valve are closed, and the filling pump is started to fill the water cooling system under test with liquid. When the pressure reaches the preset pressure P s2 After that, the electric heater in the tested water cooling system is started, and the temperature of the cooling medium in the tested water cooling system rises to the preset temperature T s The heat exchanger is started at the same time, and the heat exchange power of the heat exchanger is controlled by the PLC control system to be consistent with the heating power of the electric heater. When the cooling medium in the tested water cooling system can be stabilized at the preset temperature T s When the cooling medium temperature is continuously sampled and T s When the deviation does not exceed 3%~5%, the electric heater is qualified.

[0012] In the aforementioned intelligent water cooling system test system, when the hydraulic performance test module performs the hydraulic performance test, the second manual ball valve, the fourth manual ball valve, the fifth manual ball valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are opened, the sixth manual ball valve and the seventh manual ball valve are closed, and the electric heater and the heat exchanger are started, respectively at different preset temperatures T s1 , T s2 , T s3 , T s4 and T s5 The water cooling system to be tested is tested, and the pressure P of the water cooling system to be tested at the corresponding temperature is adjusted by adjusting the opening of the fourth manual ball valve and the fifth manual ball valve. ts1 , P ts2 , P ts3 , P ts4 and P ts5 ; The hydraulic performance test module records the flow output Q of the corresponding main circulation pump at different temperatures and pressures s1 , Q s2 , Q s3 , Q s4and Q s5 The obtained data is automatically fitted into a relationship curve between flow rate Q and pressure P. By judging whether this relationship curve meets the original design requirements of the pump, whether the hydraulic performance is qualified can be detected.

[0013] The present invention also provides a method for testing an intelligent water cooling system, comprising the following steps: S1, air tightness test: open the first solenoid valve and the liquid replenishing pump, fill the water cooling system under test with liquid, and when the pressure of the water cooling system under test reaches the set pressure value P0, close the first solenoid valve and the liquid replenishing pump, and the air tightness test module automatically records and calculates the drop value of the pressure value of the water cooling system under test within the set time. When the drop value is less than or equal to the preset pressure threshold, the air tightness test is qualified, and step S3 is executed; otherwise, the test fails, and the next step is executed; S2. After rectification, execute step S1; S3, draining the water cooling system under test; S4, safety valve pressure test: open the first solenoid valve, the first manual ball valve and the liquid filling pump, fill the water cooling system under test with liquid, and wait until the pressure stabilizes and reaches the system set time, that is, the pressure reaches the maximum value and the safety valve pressure test module samples once every 0.5S, and the sampling deviation does not exceed 5% for 5 consecutive times, the safety valve pressure test module automatically records the pressure value P1 of the water cooling system under test, and compares it with the set pressure P s1 For comparison, if (|P s1 -P1| / P s1 )×100% is less than the preset threshold value, the pressure performance test of the safety valve in the tested water cooling system is qualified, and step S6 is executed; otherwise, the test is unqualified, and the next step is executed; S5. After re-adjusting the voltage, execute step S4; S6. Drain the water cooling system under test; S7, sensor calibration: open the first solenoid valve and the liquid replenishing pump, fill the water cooling system under test with liquid, and when the pressure of the water cooling system under test reaches the set pressure value P0, the sensor calibration module automatically reads the pressure value P2 of the pressure sensor and the temperature value T1 of the temperature sensor in the water cooling system under test, and compares the values ​​with the calibrated pressure sensor and temperature sensor respectively. If the deviation percentage is within the set range, the pressure sensor and the temperature sensor are qualified, and step S9 is executed; otherwise, the detection is unqualified, and the next step is executed; S8. After replacing the pressure sensor or the temperature sensor, execute step S7; S9, preliminary determination of the function of the three-way valve or the temperature control valve: open the second solenoid valve, the third solenoid valve, the second manual ball valve, the fourth manual ball valve and the fifth manual ball valve, operate the tested water cooling system, turn on the electric heater, and the three-way valve or the temperature control valve function determination module records the flow values ​​of the first electromagnetic flow meter and the second electromagnetic flow meter at different temperatures. As the temperature of the cooling medium rises, if the flow value of the first electromagnetic flow meter shows a decreasing trend, and the flow value of the second electromagnetic flow meter shows an increasing trend, then the switching function of the three-way valve or the temperature control valve in the tested water cooling system is qualified, and step S11 is executed; otherwise, the detection is unqualified, and the next step is executed; S10, after replacing the three-way valve or the temperature control valve, execute step S9; S11, three-way valve or temperature control valve function test: in the PLC control system, set the flow value Q passing through the first electromagnetic flowmeter s The PLC control system automatically adjusts the three-way valve opening and the cooling medium temperature. The three-way valve or temperature control valve function measurement module automatically records the first electromagnetic flow meter display value Q1, and runs according to the program cycle and flow value Q s Perform deviation percentage calculation, if (|Q s -Q1| / Q s )×100% is less than the set value, the function of the three-way valve or the temperature control valve in the tested water cooling system meets the design requirements, and step S13 is executed; otherwise, the design requirements are not met, and the next step is executed; S12, after replacing the three-way valve or the temperature control valve, execute step S11; S13, electric heater function test: open the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the sixth manual ball valve and the seventh manual ball valve, close the second manual ball valve, the fourth manual ball valve and the fifth manual ball valve, start the filling pump to fill the water cooling system under test, and when the pressure reaches the preset pressure P s2 After that, the electric heater in the tested water cooling system is started, and the temperature of the cooling medium in the tested water cooling system rises to the preset temperature T s The heat exchanger is started at the same time, and the heat exchange power of the heat exchanger is controlled by the PLC control system to be consistent with the heating power of the electric heater. When the cooling medium in the tested water cooling system can be stabilized at the preset temperature T s When the cooling medium temperature is continuously sampled and T s When the deviation is less than 3% to 5%, the electric heater is qualified, and step S15 is executed; otherwise, the electric heater is unqualified, and the next step is executed; S14, after replacing the electric heater, execute step S13; S15, hydraulic performance test: open the second manual ball valve, the fourth manual ball valve, the fifth manual ball valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve, close the sixth manual ball valve and the seventh manual ball valve, start the electric heater and the heat exchanger, and set them at different preset temperatures T s1 , T s2 , T s3 , T s4 and T s5 The water cooling system to be tested is tested, and the pressure P of the water cooling system to be tested at the corresponding temperature is adjusted by adjusting the opening of the fourth manual ball valve and the fifth manual ball valve. ts1 , P ts2 , P ts3 , P ts4 and P ts5 ; The hydraulic performance test module records the flow output Q of the corresponding main circulation pump at different temperatures and pressures s1 , Q s2 , Q s3 , Q s4 and Q s5 The obtained data is automatically fitted into a relationship curve between flow rate Q and pressure P. If the maximum deviation between the relationship curve and the theoretical value does not exceed 3%, the hydraulic performance test is qualified and step S17 is executed; otherwise, the test fails and the next step is executed; S16. After rectification, execute step S15; S17, draining the water cooling system under test; S18, input compressed air into the tested water cooling system through the third manual ball valve, dry the tested water cooling system with the compressed air, and the test ends after the cleaning is completed.

[0014] Furthermore, the drainage method of steps S3, S6 and S17 is specifically as follows: open the third solenoid valve and the fourth solenoid valve, open the third manual ball valve to fill in compressed air, open the first electric ball valve, the second electric ball valve and the return pump, and use the return pump to pump the residual liquid inside the tested water cooling system back to the water tank. When there is no liquid discharged from the return pump, the drainage is completed, and the return pump, the first electric ball valve, the second electric ball valve and the ball valve are closed, and the third solenoid valve and the fourth solenoid valve are closed.

[0015] The beneficial effects of the present invention are: (1) In the present invention, the test system can automatically read and record relevant test data, avoid test deviations caused by human factors, and improve the accuracy of test results; (2) In the present invention, a safety protection one-way valve 17 is provided in the water cooling system refilling circuit, which can effectively control the maximum pressure of the tested water cooling system and the water cooling system refilling circuit, thereby protecting the safety of the equipment and related personnel; (3) The present invention includes an expansion liquid pump, a return water pump, an electric heater, a temperature sensor, a pressure sensor, a flow meter, manual and electric valves, a piping system, a variable frequency heat exchanger and a PLC control system. The actual operating conditions of the water cooling system in the wind turbine generator set are simulated by combining the actions of the actuators and the variable frequency heat exchanger in the PLC control system. The water cooling system is tested under this simulated condition, and the test data is recorded by the PLC control system. The air tightness test, safety valve pressure test, sensor calibration, three-way valve or temperature control valve function test, electric heater function test and hydraulic performance test of the water cooling system are carried out. The system has a high degree of intelligence and can effectively replace traditional manual testing, especially the coordinated control method of the variable frequency heat exchanger and the electric heater, which greatly improves the efficiency and accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the pipeline connection of the test system in the implementation of the present invention; Figure 2 It is a schematic diagram of the overall structure of the test system in the implementation of the present invention; Figure 3 It is a schematic diagram of the relationship curve fitting between pressure and flow rate of the main circulation pump in the implementation of the present invention; Figure 4 It is a schematic diagram of the overall process of the testing method in the implementation of the present invention.

[0017] Among them: 1. Water tank; 2. Control cabinet; 3. Heat exchanger; 4. Water cooling system overpressure circuit; 5. Water cooling system refilling circuit; 5. 1 first manual ball valve; 52. Refilling pump; 53. First solenoid valve; 6. Water pump circuit; 61. Second manual ball valve; 62. Second solenoid valve; 63. Third manual ball valve; 7. First measured shunt circuit; 71. Fourth manual ball valve; 72. First electromagnetic flowmeter; 73. Third solenoid valve; 8. Second measured shunt circuit; 81. Fifth manual ball valve; 82. Second electromagnetic flowmeter; 83. Fourth solenoid valve; 9. Sixth manual ball valve; 10. Seventh manual ball valve; 11. First electric ball valve; 12. Second electric ball valve; 13. Return pump; 14. Fifth solenoid valve; 15. Filter; 16. Electric heater; 17. One-way valve. DETAILED DESCRIPTION

[0018] This embodiment provides an intelligent water cooling system testing system, such as Figure 1 to Figure 2 As shown, it includes a water tank 1, a control cabinet 2 and a heat exchanger 3. A water cooling system overpressure circuit 4, a water cooling system liquid replenishment circuit 5, a water pump circuit 6, a first tested shunt circuit 7 and a second tested shunt circuit 8 are arranged in sequence between the water tank 1 and the tested water cooling system.

[0019] The water cooling system replenishment circuit 5 includes a first manual ball valve 51, a replenishment pump 52 and a first solenoid valve 53 which are sequentially arranged along the water tank 1 to the water cooling system under test. The water pump circuit 6 includes a second manual ball valve 61, a second solenoid valve 62 and a third manual ball valve 63 which are sequentially arranged along the water tank 1 to the water cooling system under test. The first measured diversion circuit 7 includes a fourth manual ball valve 71, a first electromagnetic flowmeter 72 and a third solenoid valve 73 which are sequentially arranged along the water tank 1 to the water cooling system under test. The second measured diversion circuit 8 includes a fifth manual ball valve 81, a second electromagnetic flowmeter 82 and a fourth solenoid valve 83 which are sequentially arranged along the water tank 1 to the water cooling system under test.

[0020] A sixth manual ball valve 9 is connected between the second manual ball valve 61 and the second solenoid valve 62, the other end of the sixth manual ball valve 9 is connected between the fourth manual ball valve 71 and the first electromagnetic flowmeter 72, a seventh manual ball valve 10 is connected between the fifth manual ball valve 81 and the second electromagnetic flowmeter 82, the other end of the seventh manual ball valve 10 is connected between the fourth manual ball valve 71 and the first electromagnetic flowmeter 72, and the sixth manual ball valve 9 and the seventh manual ball valve 10 are connected to each other; a first electric ball valve 11 is connected between the fourth manual ball valve 71 and the sixth manual ball valve 9, a second electric ball valve 12 is connected between the fifth manual ball valve 81 and the seventh manual ball valve 10; a return water pump 13 is connected between the first electric ball valve 11 and the second electric ball valve 12, and the other end of the return water pump 13 is connected to the water tank 1.

[0021] A fifth solenoid valve 14 is connected between the rehydration pump 52 and the first solenoid valve 53, the other end of the fifth solenoid valve 14 is connected to the heat exchanger 3, the other end of the heat exchanger 3 is connected to the filter 15, the filter 15 is used to ensure the cleanliness of the circulating solution, and the other end of the filter 15 is connected to the water tank 1; a one-way valve 17 is also connected between the rehydration pump 52 and the first solenoid valve 53, the other end of the one-way valve 17 is connected to the water tank 1, and by providing a safety protection one-way valve 17 in the water cooling system rehydration loop 5, the maximum pressure of the tested water cooling system and the water cooling system rehydration loop 5 can be effectively controlled, thereby protecting the safety of the equipment and related personnel.

[0022] An electric heater 16 is provided in the water tank 1; a pressure sensor for detecting its internal pressure and a temperature sensor for detecting the temperature of the cooling medium inside the water cooling system are provided in the tested water cooling system; a PLC control system is integrated in the control cabinet 2, and the PLC control system is electrically connected to the pressure sensor, the temperature sensor, the first electromagnetic flowmeter 72, the second electromagnetic flowmeter 82, the heat exchanger 3, the return water pump 13 and all the solenoid valves and electric ball valves.

[0023] The PLC control system includes an air tightness test module, a safety valve pressure test module, a sensor calibration module, a three-way valve or temperature control valve function measurement module, an electric heater function test module, and a hydraulic performance test module; the air tightness test module is used to test the safety valve in the circulation loop of the tested water cooling system, and the safety valve is used to limit the maximum pressure of the tested water cooling system to avoid the risk of damage to the components due to excessive pressure; the three-way valve or temperature control valve function measurement module is used to test the three-way valve or temperature control valve in the circulation loop of the tested water cooling system, and the three-way valve or temperature control valve is used to control the flow direction of the cooling medium in the circulation loop of the tested water cooling system.

[0024] When the air tightness test module performs an air tightness test, it opens the first solenoid valve 53 and the liquid replenishing pump 52 to fill the water cooling system under test with liquid. When the pressure of the water cooling system under test reaches the set pressure value P0, it closes the first solenoid valve 53 and the liquid replenishing pump 52. The air tightness test module automatically records and calculates the drop value of the pressure value of the water cooling system under test within the set time. When the drop value is less than or equal to the preset pressure threshold, the air tightness test is qualified.

[0025] When the safety valve pressure test module performs the safety valve pressure test, the first solenoid valve 53, the first manual ball valve 51 and the liquid replenishing pump 52 are opened to fill the water cooling system under test. When the pressure stabilizes and reaches the system set time, that is, the pressure reaches the maximum value and the safety valve pressure test module samples once every 0.5S, and the sampling deviation does not exceed 5% for 5 consecutive times, the safety valve pressure test module automatically records the pressure value P1 of the water cooling system under test and compares it with the set pressure P s1 For comparison, if (|P s1 -P1| / P s1 )×100% is less than the preset threshold, the pressure performance test of the safety valve is qualified.

[0026] When the sensor calibration module is calibrating, it opens the first solenoid valve 53 and the liquid replenishing pump 52 to fill the water cooling system under test with liquid. When the pressure of the water cooling system under test reaches the set pressure value P0, the sensor calibration module automatically reads the pressure value P2 of the pressure sensor and the temperature value T1 of the temperature sensor in the water cooling system under test, and compares the values ​​with the calibrated pressure sensor and temperature sensor respectively. If the deviation percentage is within the set range, the pressure sensor and temperature sensor are qualified.

[0027] When the function measurement module of the three-way valve or the temperature control valve performs a function measurement, the second solenoid valve 62, the third solenoid valve 73, the second manual ball valve 61, the fourth manual ball valve 71 and the fifth manual ball valve 81 are opened, the water cooling system to be tested is operated, the electric heater 16 is turned on, and the function measurement module of the three-way valve or the temperature control valve records the flow values ​​of the first electromagnetic flowmeter 72 and the second electromagnetic flowmeter 82 at different temperatures. As the temperature of the cooling medium rises, if the flow value of the first electromagnetic flowmeter 72 shows a decreasing trend and the flow value of the second electromagnetic flowmeter 82 shows an increasing trend, then the switching function test of the three-way valve or the temperature control valve is qualified.

[0028] After the switching function is tested to be qualified, the flow value Q passing through the first electromagnetic flowmeter 72 is set in the PLC control system. s The PLC control system automatically adjusts the three-way valve opening and the cooling medium temperature. The three-way valve or temperature control valve function measurement module automatically records the value Q1 displayed by the first electromagnetic flowmeter 72, and runs according to the cycle and flow value Q s Perform deviation percentage calculation, if (|Q s -Q1| / Q s ) × 100% is less than the set value, the function of the three-way valve or temperature control valve meets the design requirements.

[0029] When the electric heater function test module performs a function test on the electric heater 16, the second solenoid valve 62, the third solenoid valve 73, the fourth solenoid valve 83, the sixth manual ball valve 9 and the seventh manual ball valve 10 are opened, the second manual ball valve 61, the fourth manual ball valve 71 and the fifth manual ball valve 81 are closed, and the filling pump is started to fill the liquid into the tested water cooling system. When the pressure reaches the preset pressure P s2 After that, the electric heater 16 in the tested water cooling system is started, and the temperature of the cooling medium in the tested water cooling system rises to the preset temperature T s When the heat exchanger 3 is started, the heat exchange power of the heat exchanger 3 is controlled by the PLC control system to be consistent with the heating power of the electric heater 16. When the cooling medium in the tested water cooling system can be stabilized at the preset temperature T s When the cooling medium temperature is continuously sampled and T s When the deviation is less than 3% to 5%, the electric heater 16 is qualified.

[0030] When the hydraulic performance test module performs the hydraulic performance test, the second manual ball valve 61, the fourth manual ball valve 71, the fifth manual ball valve 81, the second solenoid valve 62, the third solenoid valve 73 and the fourth solenoid valve 83 are opened, the sixth manual ball valve 9 and the seventh manual ball valve 10 are closed, the electric heater 16 and the heat exchanger 3 are started, and the temperature is set at different preset temperatures T s1 , T s2 , T s3 , Ts4 and T s5 Next, the water cooling system to be tested is tested, and the pressure P of the water cooling system to be tested at the corresponding temperature is adjusted by adjusting the opening of the fourth manual ball valve 71 and the fifth manual ball valve 81. ts1 , P ts2 , P ts3 , P ts4 and P ts5 ; The hydraulic performance test module records the flow output Q of the corresponding main circulation pump at different temperatures and pressures s1 , Q s2 , Q s3 , Q s4 and Q s5 , and automatically fit the obtained data to Figure 3 The relationship curve between flow rate Q and pressure P shown is used to detect whether the hydraulic performance is qualified by judging whether this relationship curve meets the original design requirements of the pump.

[0031] This embodiment also provides a method for testing an intelligent water cooling system. Figure 4 As shown, the following steps are included: S1, air tightness test: open the first solenoid valve 53 and the liquid replenishing pump 52, fill the water cooling system under test with liquid, and when the pressure of the water cooling system under test reaches the set pressure value P0, close the first solenoid valve 53 and the liquid replenishing pump 52, and the air tightness test module automatically records and calculates the drop value of the pressure value of the water cooling system under test within the set time. When the drop value is less than or equal to the preset pressure threshold, the air tightness test is qualified, and step S3 is executed; otherwise, the test fails, and the next step is executed; S2. After rectification, execute step S1; S3, draining the water cooling system under test; S4, safety valve pressure test: open the first solenoid valve 53, the first manual ball valve 51 and the liquid filling pump 52, fill the water cooling system under test with liquid, and wait until the pressure stabilizes and reaches the system set time, that is, the pressure reaches the maximum value and the safety valve pressure test module samples once every 0.5S, and the sampling deviation does not exceed 5% for 5 consecutive times, the safety valve pressure test module automatically records the pressure value P1 of the water cooling system under test, and compares it with the set pressure P s1 For comparison, if (|P s1 -P1| / P s1 )×100% is less than the preset threshold value, the pressure performance test of the safety valve in the tested water cooling system is qualified, and step S6 is executed; otherwise, the test is unqualified, and the next step is executed; S5. After re-adjusting the voltage, execute step S4; S6. Drain the water cooling system under test; S7, sensor calibration: open the first solenoid valve 53 and the liquid replenishing pump 52, fill the water cooling system under test with liquid, and when the pressure of the water cooling system under test reaches the set pressure value P0, the sensor calibration module automatically reads the pressure value P2 of the pressure sensor and the temperature value T1 of the temperature sensor in the water cooling system under test, and compares the values ​​with the calibrated pressure sensor and temperature sensor respectively. If the deviation percentage is within the set range, the pressure sensor and the temperature sensor are qualified, and step S9 is executed; otherwise, the detection is unqualified, and the next step is executed; S8. After replacing the pressure sensor or the temperature sensor, execute step S7; S9, preliminary determination of the function of the three-way valve or the temperature control valve: open the second solenoid valve 62, the third solenoid valve 73, the second manual ball valve 61, the fourth manual ball valve 71 and the fifth manual ball valve 81, operate the tested water cooling system, turn on the electric heater 16, and the three-way valve or temperature control valve function determination module records the flow values ​​of the first electromagnetic flowmeter 72 and the second electromagnetic flowmeter 82 at different temperatures. As the temperature of the cooling medium rises, if the flow value of the first electromagnetic flowmeter 72 shows a decreasing trend, and the flow value of the second electromagnetic flowmeter 82 shows an increasing trend, then the switching function of the three-way valve or the temperature control valve in the tested water cooling system is qualified, and step S11 is executed; otherwise, the detection is unqualified, and the next step is executed; S10, after replacing the three-way valve or the temperature control valve, execute step S9; S11, three-way valve or temperature control valve function test: In the PLC control system, set the flow value Q passing through the first electromagnetic flowmeter 72 s The PLC control system automatically adjusts the three-way valve opening and the cooling medium temperature. The three-way valve or temperature control valve function measurement module automatically records the value Q1 displayed by the first electromagnetic flowmeter 72, and runs according to the cycle and flow value Q s Perform deviation percentage calculation, if (|Q s -Q1| / Q s )×100% is less than the set value, the function of the three-way valve or the temperature control valve in the tested water cooling system meets the design requirements, and step S13 is executed; otherwise, the design requirements are not met, and the next step is executed; S12, after replacing the three-way valve or the temperature control valve, execute step S11; S13, electric heater 16 function test: open the second solenoid valve 62, the third solenoid valve 73, the fourth solenoid valve 83, the sixth manual ball valve 9 and the seventh manual ball valve 10, close the second manual ball valve 61, the fourth manual ball valve 71 and the fifth manual ball valve 81, start the filling pump to fill the water cooling system under test, and when the pressure reaches the preset pressure P s2 After that, the electric heater 16 in the tested water cooling system is started, and the temperature of the cooling medium in the tested water cooling system rises to the preset temperature T sWhen the heat exchanger 3 is started, the heat exchange power of the heat exchanger 3 is controlled by the PLC control system to be consistent with the heating power of the electric heater 16. When the cooling medium in the tested water cooling system can be stabilized at the preset temperature T s When the cooling medium temperature is continuously sampled and T s When the value is compared and the deviation does not exceed 3% to 5%, the electric heater 16 is qualified and step S15 is executed; otherwise, the detection is unqualified and the next step is executed; S14, after replacing the electric heater 16, execute step S13; S15, hydraulic performance test: open the second manual ball valve 61, the fourth manual ball valve 71, the fifth manual ball valve 81, the second solenoid valve 62, the third solenoid valve 73 and the fourth solenoid valve 83, close the sixth manual ball valve 9 and the seventh manual ball valve 10, start the electric heater 16 and the heat exchanger 3, and set them at different preset temperatures T s1 , T s2 , T s3 , T s4 and T s5 Next, the water cooling system to be tested is tested, and the pressure P of the water cooling system to be tested at the corresponding temperature is adjusted by adjusting the opening of the fourth manual ball valve 71 and the fifth manual ball valve 81. ts1 , P ts2 , P ts3 , P ts4 and P ts5 ; The hydraulic performance test module records the flow output Q of the corresponding main circulation pump at different temperatures and pressures s1 , Q s2 , Q s3 , Q s4 and Q s5 The obtained data is automatically fitted into a relationship curve between flow rate Q and pressure P. If the maximum deviation between the relationship curve and the theoretical value does not exceed 3%, the hydraulic performance test is qualified and step S17 is executed; otherwise, the test fails and the next step is executed; S16. After rectification, execute step S15; S17, draining the water cooling system under test; S18, inputting compressed air into the tested water cooling system through the third manual ball valve 63, and drying the tested water cooling system through the compressed air. After the cleaning is completed, the test ends.

[0032] The specific method of draining in steps S3, S6 and S17 is as follows: open the third solenoid valve 73 and the fourth solenoid valve 83, open the third manual ball valve 63 to charge compressed air, open the first electric ball valve 11, the second electric ball valve 12 and the return pump 13, and pump the residual liquid inside the tested water cooling system back to the water tank 1 through the return pump 13. When there is no liquid discharged from the return pump 13, the draining is completed, close the return pump 13, the first electric ball valve 11, the second electric ball valve 12 and the ball valve, and close the third solenoid valve 73 and the fourth solenoid valve 83.

[0033] The intelligent water cooling system testing system and method of the present embodiment can automatically read and record relevant test data, avoid test deviations caused by human factors, and improve the accuracy of test results; the actual operating conditions of the water cooling system in the wind turbine are simulated through the action combination of each actuator and the variable frequency heat exchanger in the PLC control system, and the water cooling system is tested under this simulated condition, and the test data is recorded through the PLC control system to perform air tightness test, safety valve pressure test, sensor calibration, three-way valve or temperature control valve function test, electric heater function test and hydraulic performance test of the water cooling system. The system has a high degree of intelligence and can effectively replace traditional manual testing, especially the coordinated control method of the variable frequency heat exchanger and the electric heater, which greatly improves the efficiency and accuracy of the test.

[0034] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. An intelligent water cooling system testing system, characterized in that: The invention comprises a water tank (1), a control cabinet (2) and a heat exchanger (3); a water cooling system overpressure circuit (4), a water cooling system liquid replenishment circuit (5), a water pump circuit (6), a first tested shunt circuit (7) and a second tested shunt circuit (8) are arranged in sequence between the water tank (1) and the tested water cooling system; the water cooling system liquid replenishment circuit (5) comprises a first manual ball valve (51), a liquid replenishment pump (52) and a first solenoid valve (53) arranged in sequence along the water tank (1) towards the tested water cooling system; the water pump circuit (6) comprises a first manual ball valve (51), a liquid replenishment pump (52) and a first solenoid valve (53) arranged in sequence along the water tank (1) towards the tested water cooling system; A second manual ball valve (61), a second electromagnetic valve (62) and a third manual ball valve (63) are sequentially arranged in the direction of the water cooling system to be tested; the first measured flow diversion circuit (7) comprises a fourth manual ball valve (71), a first electromagnetic flow meter (72) and a third electromagnetic valve (73) which are sequentially arranged along the water tank (1) towards the water cooling system to be tested; and the second measured flow diversion circuit (8) comprises a fifth manual ball valve (81), a second electromagnetic flow meter (82) and a fourth electromagnetic valve (83) which are sequentially arranged along the water tank (1) towards the water cooling system to be tested; A sixth manual ball valve (9) is connected between the second manual ball valve (61) and the second electromagnetic valve (62); the other end of the sixth manual ball valve (9) is connected between the fourth manual ball valve (71) and the first electromagnetic flowmeter (72); a seventh manual ball valve (10) is connected between the fifth manual ball valve (81) and the second electromagnetic flowmeter (82); the other end of the seventh manual ball valve (10) is connected between the fourth manual ball valve (71) and the first electromagnetic flowmeter (72); and the sixth manual ball valve (9) and the seventh manual ball valve (10) are connected to each other; the fourth manual ball valve (71) and the sixth manual ball valve (9 ) is connected between the first and second manual ball valves (51), and a second electric ball valve (12) is connected between the fifth and seventh manual ball valves (81); a return water pump (13) is connected between the first and second electric ball valves (11), and the other end of the return water pump (13) is connected to the water tank (1); a fifth solenoid valve (14) is connected between the liquid replenishment pump (52) and the first solenoid valve (53), and the other end of the fifth solenoid valve (14) is connected to the heat exchanger (3), and the other end of the heat exchanger (3) is connected to the filter (15), and the other end of the filter (15) is connected to the water tank (1); The water tank (1) is provided with an electric heater (16); the water cooling system to be tested is provided with a pressure sensor for detecting its internal pressure and a temperature sensor for detecting the temperature of the cooling medium inside the water cooling system; a PLC control system is integrated in the control cabinet (2), and the PLC control system is electrically connected to the pressure sensor, the temperature sensor, the first electromagnetic flowmeter (72), the second electromagnetic flowmeter (82), the heat exchanger (3), the return water pump (13), and all the electromagnetic valves and electric ball valves.

2. The intelligent water cooling system testing system according to claim 1, characterized in that: The PLC control system includes an air tightness test module, a safety valve pressure test module, a sensor calibration module, a three-way valve or temperature control valve function determination module, an electric heater function test module, and a hydraulic performance test module; The air tightness test module and the safety valve pressure test module detect the air tightness of the tested water cooling system and the pressure performance of the safety valve in the tested water cooling system by recording and calculating the detection pressure values ​​of the pressure sensors under different opening and closing states of each valve. When the water cooling system reaches the set pressure value after filling, the sensor calibration module reads and compares the detection values ​​of the pressure sensor and the temperature sensor to detect whether the pressure sensor and the temperature sensor are qualified; The three-way valve or temperature control valve function determination module detects whether the function of the three-way valve or temperature control valve in the tested water cooling system meets the design requirements by recording and calculating the flow values ​​of the first electromagnetic flow meter (72) and the second electromagnetic flow meter (82) at different temperatures and valve openings; The electric heater function test module detects whether the heating power of the electric heater (16) matches by controlling the power of the electric heater (16) and the heat exchanger (3) and reading and comparing the temperature detection value of the temperature sensor; The hydraulic performance test module records the flow output of the corresponding main circulation pump in the tested water cooling system under different temperatures and pressures, and fits the read data into a relationship curve between flow and pressure. By judging whether this relationship curve meets the original design requirements of the pump, it detects whether the hydraulic performance is qualified.

3. The intelligent water cooling system testing system according to claim 2, characterized in that: When the air tightness test module performs an air tightness test, the first solenoid valve (53) and the liquid replenishing pump (52) are opened to fill the water cooling system under test with liquid. When the pressure of the water cooling system under test reaches a set pressure value P0, the first solenoid valve (53) and the liquid replenishing pump (52) are closed. The air tightness test module automatically records and calculates the drop value of the pressure value of the water cooling system under test within a set time. When the drop value is less than or equal to a preset pressure threshold, the air tightness test is qualified.

4. The intelligent water cooling system testing system according to claim 2, characterized in that: When the safety valve pressure test module performs a safety valve pressure test, the first solenoid valve (53), the first manual ball valve (51) and the liquid replenishing pump (52) are opened to fill the water cooling system under test with liquid. When the pressure stabilizes and reaches the system set time, that is, the pressure reaches the maximum value and the safety valve pressure test module takes a sample every 0.5 seconds, and the deviation of five consecutive samplings does not exceed 5%, the safety valve pressure test module automatically records the pressure value P1 of the water cooling system under test and compares it with the set pressure P s1 For comparison, if (|P s1 -P1| / P s1 )×100% is less than the preset threshold, the pressure performance test of the safety valve is qualified.

5. The intelligent water cooling system testing system according to claim 2, characterized in that: When the sensor calibration module is performing calibration, the first solenoid valve (53) and the liquid replenishing pump (52) are opened to fill the water cooling system under test with liquid. When the pressure of the water cooling system under test reaches the set pressure value P0, the sensor calibration module automatically reads the pressure value P2 of the pressure sensor and the temperature value T1 of the temperature sensor in the water cooling system under test, and compares the values ​​with the calibrated pressure sensor and temperature sensor respectively. If the deviation percentage is within the set range, the pressure sensor and the temperature sensor are qualified.

6. The intelligent water cooling system testing system according to claim 2, characterized in that: When the three-way valve or temperature control valve function test module performs a function test, the second electromagnetic valve (62), the third electromagnetic valve (73), the second manual ball valve (61), the fourth manual ball valve (71) and the fifth manual ball valve (81) are opened, the water cooling system to be tested is operated, the electric heater (16) is turned on, and the three-way valve or temperature control valve function test module records the flow values ​​of the first electromagnetic flow meter (72) and the second electromagnetic flow meter (82) at different temperatures. As the temperature of the cooling medium rises, if the flow value of the first electromagnetic flow meter (72) shows a decreasing trend, while the flow value of the second electromagnetic flow meter (82) shows an increasing trend, then the switching function test of the three-way valve or temperature control valve is qualified; After the switching function is tested and qualified, the flow value Q passing through the first electromagnetic flow meter (72) is set in the PLC control system. s The three-way valve opening and the cooling medium temperature are automatically adjusted through the PLC control system. The three-way valve or temperature control valve function measurement module automatically records the value Q1 displayed by the first electromagnetic flowmeter (72), and runs according to the cycle period and flow value Q s Perform deviation percentage calculation, if (|Q s -Q1| / Q s ) × 100% is less than the set value, the function of the three-way valve or temperature control valve meets the design requirements.

7. The intelligent water cooling system testing system according to claim 2, characterized in that: When the electric heater function test module performs a function test on the electric heater (16), the second solenoid valve (62), the third solenoid valve (73), the fourth solenoid valve (83), the sixth manual ball valve (9) and the seventh manual ball valve (10) are opened, the second manual ball valve (61), the fourth manual ball valve (71) and the fifth manual ball valve (81) are closed, and the filling pump is started to fill the water cooling system under test with liquid. When the pressure reaches a preset pressure P s2 After that, the electric heater (16) in the tested water cooling system is started, and the temperature of the cooling medium in the tested water cooling system rises to the preset temperature T s The heat exchanger (3) is started at the same time, and the heat exchange power of the heat exchanger (3) is controlled by the PLC control system to be consistent with the heating power of the electric heater (16). When the cooling medium in the tested water cooling system can be stabilized at the preset temperature T s When the cooling medium temperature is continuously sampled and T s When the deviation does not exceed 3% to 5%, the electric heater (16) passes the test.

8. The intelligent water cooling system testing system according to claim 2, characterized in that: When the hydraulic performance test module performs a hydraulic performance test, the second manual ball valve (61), the fourth manual ball valve (71), the fifth manual ball valve (81), the second solenoid valve (62), the third solenoid valve (73) and the fourth solenoid valve (83) are opened, the sixth manual ball valve (9) and the seventh manual ball valve (10) are closed, and the electric heater (16) and the heat exchanger (3) are started to heat the electric heater (16) and the heat exchanger (3) at different preset temperatures T. s1 , T s2 , T s3 , T s4 and T s5 Next, the water cooling system to be tested is tested, and the pressure P of the water cooling system to be tested at the corresponding temperature is adjusted by adjusting the opening of the fourth manual ball valve (71) and the fifth manual ball valve (81). ts1 , P ts2 , P ts3 , P ts4 and P ts5 ; The hydraulic performance test module records the flow output Q of the corresponding main circulation pump at different temperatures and pressures. s1 , Q s2 , Q s3 , Q s4 and Q s5 The obtained data is automatically fitted into a relationship curve between flow rate Q and pressure P. By judging whether this relationship curve meets the original design requirements of the pump, whether the hydraulic performance is qualified can be detected.

9. A method for testing an intelligent water cooling system of a system according to any one of the preceding claims, characterized in that: The following steps are involved: S1, air tightness test: open the first solenoid valve (53) and the liquid replenishing pump (52), fill the water cooling system under test with liquid, and when the pressure of the water cooling system under test reaches the set pressure value P0, close the first solenoid valve (53) and the liquid replenishing pump (52), and the air tightness test module automatically records and calculates the drop value of the pressure value of the water cooling system under test within the set time. When the drop value is less than or equal to the preset pressure threshold, the air tightness test is qualified and step S3 is executed; otherwise, the test fails and the next step is executed; S2. After rectification, execute step S1; S3, draining the water cooling system under test; S4, safety valve pressure test: open the first solenoid valve (53), the first manual ball valve (51) and the liquid filling pump (52), fill the water cooling system under test with liquid, and wait until the pressure stabilizes and reaches the system set time, that is, the pressure reaches the maximum value and the safety valve pressure test module samples once every 0.5 seconds, and the sampling deviation does not exceed 5% for 5 consecutive times, the safety valve pressure test module automatically records the pressure value P1 of the water cooling system under test, and compares it with the set pressure P s1 For comparison, if (|P s1 -P1| / P s1 )×100% is less than the preset threshold value, the pressure performance test of the safety valve in the tested water cooling system is qualified, and step S6 is executed; otherwise, the test is unqualified, and the next step is executed; S5. After re-adjusting the voltage, execute step S4; S6. Drain the water cooling system under test; S7, sensor calibration: open the first solenoid valve (53) and the liquid replenishing pump (52), fill the water cooling system under test with liquid, and when the pressure of the water cooling system under test reaches the set pressure value P0, the sensor calibration module automatically reads the pressure value P2 of the pressure sensor and the temperature value T1 of the temperature sensor in the water cooling system under test, and compares the values ​​with the calibrated pressure sensor and temperature sensor respectively. If the deviation percentage is within the set range, the pressure sensor and the temperature sensor are qualified, and step S9 is executed; otherwise, the detection is unqualified, and the next step is executed; S8. After replacing the pressure sensor or the temperature sensor, execute step S7; S9, preliminary determination of the function of the three-way valve or the temperature control valve: open the second solenoid valve (62), the third solenoid valve (73), the second manual ball valve (61), the fourth manual ball valve (71) and the fifth manual ball valve (81), operate the water cooling system to be tested, turn on the electric heater (16), and the three-way valve or temperature control valve function determination module records the flow values ​​of the first electromagnetic flow meter (72) and the second electromagnetic flow meter (82) at different temperatures. As the temperature of the cooling medium rises, if the flow value of the first electromagnetic flow meter (72) shows a decreasing trend, and at the same time the flow value of the second electromagnetic flow meter (82) shows an increasing trend, then the switching function of the three-way valve or the temperature control valve in the water cooling system to be tested is qualified, and step S11 is executed; otherwise, the detection is unqualified, and the next step is executed; S10, after replacing the three-way valve or the temperature control valve, execute step S9; S11. Three-way valve or temperature control valve function test: In the PLC control system, set the flow value Q passing through the first electromagnetic flowmeter (72). s The three-way valve opening and the cooling medium temperature are automatically adjusted through the PLC control system. The three-way valve or temperature control valve function measurement module automatically records the value Q1 displayed by the first electromagnetic flowmeter (72), and runs according to the cycle period and flow value Q s Perform deviation percentage calculation, if (|Q s -Q1| / Q s )×100% is less than the set value, the function of the three-way valve or the temperature control valve in the tested water cooling system meets the design requirements, and step S13 is executed; otherwise, the design requirements are not met, and the next step is executed; S12, after replacing the three-way valve or the temperature control valve, execute step S11; S13, electric heater (16) function test: open the second solenoid valve (62), the third solenoid valve (73), the fourth solenoid valve (83), the sixth manual ball valve (9) and the seventh manual ball valve (10), close the second manual ball valve (61), the fourth manual ball valve (71) and the fifth manual ball valve (81), start the filling pump to fill the water cooling system under test with liquid, and when the pressure reaches the preset pressure P s2 After that, the electric heater (16) in the tested water cooling system is started, and the temperature of the cooling medium in the tested water cooling system rises to the preset temperature T s The heat exchanger (3) is started at the same time, and the heat exchange power of the heat exchanger (3) is controlled by the PLC control system to be consistent with the heating power of the electric heater (16). When the cooling medium in the tested water cooling system can be stabilized at the preset temperature T s When the cooling medium temperature is continuously sampled and T s When the value is compared and the deviation does not exceed 3% to 5%, the electric heater (16) is qualified and step S15 is executed; otherwise, the test is unqualified and the next step is executed; S14, after replacing the electric heater (16), execute step S13; S15, hydraulic performance test: open the second manual ball valve (61), the fourth manual ball valve (71), the fifth manual ball valve (81), the second solenoid valve (62), the third solenoid valve (73) and the fourth solenoid valve (83), close the sixth manual ball valve (9) and the seventh manual ball valve (10), start the electric heater (16) and the heat exchanger (3), and respectively set the temperature at different preset temperatures T s1 , T s2 , T s3 , T s4 and T s5 Next, the water cooling system to be tested is tested, and the pressure P of the water cooling system to be tested at the corresponding temperature is adjusted by adjusting the opening of the fourth manual ball valve (71) and the fifth manual ball valve (81). ts1 , P ts2 , P ts3 , P ts4 and P ts5 ; The hydraulic performance test module records the flow output Q of the corresponding main circulation pump at different temperatures and pressures. s1 , Q s2 , Q s3 , Q s4 and Q s5 The obtained data is automatically fitted into a relationship curve between flow rate Q and pressure P. If the maximum deviation between the relationship curve and the theoretical value does not exceed 3%, the hydraulic performance test is qualified and step S17 is executed; otherwise, the test fails and the next step is executed; S16. After rectification, execute step S15; S17, draining the tested water cooling system; S18, inputting compressed air into the water cooling system under test through the third manual ball valve (63), and drying the water cooling system under test by the compressed air. After the cleaning is completed, the test ends.

10. The intelligent water cooling system testing method according to claim 9, characterized in that: The drainage method of steps S3, S6 and S17 is specifically as follows: opening the third solenoid valve (73) and the fourth solenoid valve (83), opening the third manual ball valve (63) to charge compressed air, opening the first electric ball valve (11), the second electric ball valve (12) and the return water pump (13), pumping the residual liquid inside the tested water cooling system back to the water tank (1) through the return water pump (13), and completing the drainage when no liquid is discharged from the return water pump (13), closing the return water pump (13), the first electric ball valve (11), the second electric ball valve (12) and the ball valve, and closing the third solenoid valve (73) and the fourth solenoid valve (83).

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