Intelligent water flow impact tester and method

Abstract

According to the scheme, the intelligent water flow impact tester is composed of an intelligent control assembly, a water temperature controller, a timer, a flow meter, a water flow control assembly, a support, a needle tube, a sample table, a water tank and a circulating water pump in a matched mode, and the water flow control assembly is arranged in a circulating water pipeline and can dynamically adjust the water flow; the intelligent control assembly cooperatively controls the water temperature controller, the timer, the flow meter, the water flow control assembly and the circulating water pump, and can control the working state of the water flow control assembly based on closed-loop PID control according to the real-time water flow monitored by the flow meter, so that the water flow speed is stabilized within the range required by the test. The invention provides an intelligent water flow impact test scheme, full-automatic and high-precision control of the test process can be realized, the repeatability and reliability of the mechanical stability test of the super-hydrophobic material are remarkably improved, and the national standard requirements are met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of material surface mechanical property testing, and particularly relates to an intelligent water flow impact testing device for evaluating the mechanical stability of super-hydrophobic surfaces and a control method thereof, which is particularly suitable for meeting the requirements of GB / T 45017-2024 standard on water flow impact condition control and test result repeatability. BACKGROUND

[0002] Super-hydrophobic surfaces have wide applications in self-cleaning, anti-icing, corrosion prevention, etc., and their mechanical stability (such as durability under high-speed water flow impact) during long-term service is a key indicator for evaluating their engineering practicability. The provisions of clauses 4.5 and 6.4 of Chinese national standard GB / T 45017-2024 "Test method for mechanical stability of super-hydrophobic surfaces" explicitly specify various conditions for water flow impact testing, including water flow speed, temperature, impact angle, duration, etc.

[0003] The current common water flow impact testing equipment relies on manual operation, and has problems such as low control precision, poor repeatability, and complicated operation, which is difficult to meet the requirements of standardized testing; in particular, the control precision based on manual operation cannot meet the requirements of water flow impact testing.

[0004] Therefore, it is an urgent problem in the field to provide an intelligent and high-precision water flow impact testing scheme. SUMMARY

[0005] In view of the problem of complicated operation and low control precision of the existing water flow impact testing scheme based on manual operation, the purpose of the present application is to provide an intelligent water flow impact tester which can realize automation of the water flow impact testing process and improve control precision; accordingly, the present application also provides an intelligent water flow impact testing method.

[0006] In order to achieve the above-mentioned purpose, the intelligent water flow impact tester provided by the present application comprises an intelligent control component, a water temperature controller, a timer, a flow meter, a water flow control component, a support, a needle tube, a sample table, a water tank, and a circulating water pump; The sample table is used to carry the sample to be tested, and the table surface of the sample table carrying the sample to be tested can be adjusted and maintained at an angle of 0-45° relative to the horizontal plane; The support is provided corresponding to the sample table and is used to carry the needle tube; the needle tube is arranged on the support and cooperates with the table surface of the sample table carrying the sample to be tested, and can generate an impact water flow on the sample to be tested carried on the sample table according to the testing requirements; The water tank stores test water, the water temperature controller is matched with the water tank, and the water temperature in the water tank can be stably controlled in a test requirement range; the circulating water pump is connected with the water tank and the needle tube through a circulating water pipeline, and can deliver water in the water tank to the needle tube to generate an impact water flow; The water flow control assembly is arranged in the circulating water pipeline and can dynamically adjust the water flow size; the flow meter is arranged in the circulating water pipeline and can monitor the water flow in real time; and the timer is used for setting or / and recording the needle tube water impact duration. The intelligent control assembly cooperatively controls the water temperature controller, the timer, the flow meter, the water flow control assembly and the circulating water pump, can control the working state of the water flow control assembly based on closed-loop PID control according to the real-time water flow monitored by the flow meter, and makes the water flow speed stable in the test requirement range.

[0007] Further, the water temperature controller is provided with a heating module, a temperature sensor and a PID control module, the PID control module controls the working state of the heating module based on closed-loop PID control according to the temperature monitored by the temperature sensor in real time.

[0008] Further, the water flow control assembly is realized based on a water flow adjusting valve driven by a stepping motor.

[0009] Further, the needle tube is arranged on the support based on an adjustable mechanism, and the distance between the needle tube outlet and the surface of the sample to be tested on the sample table can be adjusted through the adjustable mechanism.

[0010] Further, the table top of the sample table adopts a rotary table top.

[0011] Further, the water tank is provided with a sediment tank at the bottom.

[0012] Further, the water tank is provided with a drainage assembly.

[0013] In order to achieve the above purpose, the intelligent water flow impact test method provided by the application can obtain the flow of the water flow impacting the surface of the sample to be tested in real time, and dynamically control the flow rate of the impact water flow based on a closed-loop PID control mode, so that the water flow speed is stable in the test requirement range.

[0014] Further, the test method also obtains the temperature of the water flow impacting the surface of the sample to be tested in real time, and dynamically controls the temperature of the impact water flow based on closed-loop PID control, so that the water flow temperature is stable in the test requirement range.

[0015] Further, the test method synchronously times the impact test process, and generates a test report after the test is completed.

[0016] The application provides an intelligent water flow impact test scheme, can realize full automation, high-precision control of the test process, significantly improve the repeatability and reliability of the mechanical stability test of super-hydrophobic materials, and meet the requirements of national standards.

[0017] Further, the scheme provided by the application can accurately meet the technical requirements of the water flow impact test in clauses 4.5 and 6.4 of GB / T 45017-2024 standard, realize automation, parameter adjustment, high-precision control and data visualization of the test process, and improve the consistency and reliability of the test results. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further described below in combination with the drawings and specific embodiments.

[0019] Figure 1 An example diagram of the structure of the intelligent water flow impact tester in the application.

[0020] Figure 2 A principle diagram of the structure of the intelligent water flow impact tester in the application.

[0021] Figure 3 A principle flowchart of the closed-loop PID control in the application. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application will be further described below in combination with specific drawings.

[0023] Referring to Figure 1 and Figure 2 shown, the intelligent water flow impact tester 100 given by the application is mainly composed of an intelligent control assembly 120, a water temperature controller 111, a timer 112, a flow meter 113, a water flow control assembly 114, a support 115, a needle tube 116, a sample table 117, a water tank 118 and a circulating water pump 119.

[0024] The sample table 117 in the tester is used to carry the sample to be tested, and the table surface of the sample table 117 used to carry the sample to be tested can be adjusted and kept between 0-45° relative to the horizontal plane, so that the test angle can be adjusted according to the test requirements.

[0025] The support 115 and the needle tube 116 in the tester cooperate to form an impact water flow generating assembly. The support 115 is arranged corresponding to the sample table 117 and is used to carry the needle tube 116. Correspondingly, the needle tube 116 is arranged on the support 115 and cooperates with the table surface of the sample table 117 carrying the sample to be tested, so that the impact water flow can be generated on the sample to be tested carried on the sample table 117 according to the test requirements.

[0026] The water tank 118 in the tester cooperates with the circulating water pump 119 to form a water supply assembly for providing a stable water flow to the needle tube 116 to generate the impact water flow. The water tank 118 stores the water for the circulation test, and the circulating water pump 119 is used to provide a stable water flow power. The circulating water pipeline 121 is connected to the water tank 118 and the needle tube 116, respectively, so that the water in the water tank 118 can be delivered to the needle tube 116 to generate the impact water flow.

[0027] The water temperature controller 111 in the tester is used to control the temperature of the test water, so that the temperature of the test water meets the test requirements. The water temperature controller 111 is specifically arranged in cooperation with the water tank, so that the temperature of the water in the water tank can be stably controlled within the test requirement range, so that the temperature of the impact water flow generated in the needle tube 116 meets the requirements.

[0028] The timer 112 in the tester is used to set and / or record the duration of the needle tube water impact, that is, to manage and record the related time in the test process.

[0029] The flow meter 113 in the tester is used to measure and display the water flow delivered to the needle tube 116 in real time. The flow meter 113 is specifically arranged in the circulating water pipeline 121, so that the water flow can be monitored and displayed in real time.

[0030] The water flow control assembly 114 in the tester is used to dynamically adjust the size of the water flow delivered to the needle tube 116, so as to ensure that the flow rate of the impact water flow generated by the needle tube 116 is stable. The water flow control assembly 114 is arranged in the circulating water pipeline, so as to dynamically adjust the size of the water flow.

[0031] The intelligent control assembly 120 in the tester is used as a control assembly of the entire tester, which cooperatively controls the water temperature controller 111, the timer 112, the flow meter 113, the water flow control assembly 114, the sample table 117 and the circulating water pump 119 in the tester, so as to automatically complete the test process.

[0032] The intelligent control assembly 120 controls the sample table 117, which can control and adjust the inclination angle of the table surface relative to the horizontal plane in the sample table 117 according to the test requirements and record the angle, so as to automatically adjust the test angle for the sample to be tested.

[0033] The intelligent control assembly 120 controls the timer 112, which can time the working state of the main components in the tester, such as recording the working state of the circulating water pump 119 and the water flow control assembly 114, so as to record the related time in the test process. At the same time, the working state of the circulating water pump 119 and the water flow control assembly 114 can be controlled according to the timing setting of the timer 112, so as to automatically manage the test process, such as starting, pausing, stopping, etc.

[0034] The intelligent control assembly 120 controls the water temperature controller 111, can acquire the temperature of the test water in the water tank 118 in real time, and dynamically controls the working state of the water temperature controller 111 based on closed-loop PID control, so as to dynamically adjust the temperature of the test water in the water tank 118, so that the water flow temperature is stable in the range required by the test.

[0035] The intelligent control assembly 120 controls the flow meter 113 and the water flow control assembly 114 to form a closed-loop control loop for water flow control, can dynamically adjust the size of the water flow delivered to the needle tube 116 based on the real-time water flow monitored by the flow meter 113, and dynamically controls the working state of the water flow control assembly 114 based on closed-loop PID control, so that the water flow speed is stable in the range required by the test.

[0036] The intelligent water flow impact tester formed by the above scheme is described in detail below.

[0037] In some embodiments of the present application, the sample table 117 in the tester adopts a frame structure at the bottom, and a table top is arranged thereon to carry the sample to be tested.

[0038] Further, the bottom of the table top is arranged on the bottom frame through an electric drive rotating mechanism, and the table top can swing relative to the horizontal plane within a certain range based on the electric drive rotating mechanism, so as to adjust the angle of the table top relative to the horizontal plane.

[0039] As an example, the electric drive rotating mechanism here mainly consists of a gimbal structure driven by a servo motor. On this basis, a corresponding angle measuring instrument (such as an angle encoder) is arranged for the electric drive rotating mechanism to measure the adjusted angle in real time.

[0040] At the same time, the electric drive rotating mechanism and the angle measuring instrument can be controlled by the intelligent control assembly, so that the automatic adjustment of the working angle of the table top can be realized.

[0041] Accordingly, the sample table 117 arranged in this way carries the sample to be tested through the table top, and can automatically adjust the angle of the table top relative to the horizontal plane within the range of 0-45° under the control of the intelligent control assembly, and the corresponding angle error can be controlled within the range of ≤±0.1°, so as to drive the sample to be tested to adjust the distribution angle relative to the needle tube to meet the standard impact angle requirement.

[0042] In some embodiments of the present application, the water tank 118 in the tester is preferably made of PET material or 304 stainless steel material, and the inner wall is polished to prevent impurity pollution; at the same time, the capacity is preferably ≥50 L.

[0043] Further, the water tank 118 is preferably distributed at the lower part of the sample table 117, so as to collect the water flow generated by the impact test on the table top, and realize the recycling of the test water.

[0044] On this basis, as a further optimization, a sedimentation tank can be arranged at the bottom of the water tank 118, so as to complete the sedimentation of the test water and ensure the reliability of the recycling test.

[0045] As a further optimization, a drainage system can also be arranged at the bottom of the water tank 118, so as to realize the automatic drainage, cleaning and maintenance of the water tank 118.

[0046] As an example, the drainage system can be composed of a drainage port arranged at the bottom of the water tank 118 and an electric drainage valve (such as an electric ball valve) connected with the drainage port.

[0047] The electric drainage valve can be arranged to support remote control and automatic drainage program, so as to realize the automatic drainage of the water tank 118 and ensure the reliability of the entire test process.

[0048] In some embodiments of the present application, the circulating water pump 119 in the tester is preferably a corrosion-resistant, low-noise magnetic drive pump with a flow rate ≥ 15 L / min and adjustable pressure, so as to provide stable water flow power.

[0049] It should be noted that the selection of the circulating water pump 119 is not limited to this, and other solutions can also be used as needed.

[0050] In some embodiments of the present application, an online filter membrane device is arranged in the circulating water pipeline 121 in the tester, so as to filter the water flow delivered by the circulating water pump 119 and prevent clogging, so as to improve the stability and reliability of the test.

[0051] As an example, the circulating water pipeline 121 can be composed of food-grade PVC or stainless steel pipeline, and an online filter membrane device with automatic cleaning or replacement function is arranged inside, with a filtration precision of 5 μm, so as to avoid clogging of the pipeline.

[0052] In some embodiments of the present application, the timer 112 in the tester is provided with a high-precision real-time clock module (RTC), which supports multiple timing modes, such as: water flushing for 60 s → stop for 60 s → water flushing for 60 s, etc.

[0053] The timer 112 thus arranged can cooperate with the intelligent control component 120 to accurately set the start time, duration and stop time of the water flushing test, etc.

[0054] In some embodiments of the present application, the support 115 in the tester is made of a high-rigidity aluminum alloy structure, and the specific structure is not limited here and can be determined according to actual requirements.

[0055] In some embodiments of the present application, the needle tube 116 in the tester is selected according to test requirements, and has an inner diameter of 2.5±0.01 mm and a length of 25±0.01 mm.

[0056] It should be noted here that other specifications of needle tubes can also be used according to different test requirements.

[0057] Further, the needle tube 116 in the tester is preferably arranged on the support 115 through an adjustable mechanism, based on which the distance between the outlet of the needle tube 116 and the surface of the sample table 117 can be adjusted, so that the distance between the outlet of the needle tube and the surface of the sample to be tested on the surface of the sample table can be adjusted.

[0058] For example, the adjustable mechanism here can be implemented by using a precision lead screw adjustment mechanism, which can ensure the adjustment accuracy and achieve a positioning accuracy of ±0.05 mm. The specific structure of the precision lead screw adjustment mechanism can be determined according to actual requirements, and will not be described here.

[0059] As a further supplement, the arrangement of the needle tube 116 on the support 115 through the adjustable mechanism can be further configured with a laser alignment device to assist in calibrating the adjustment accuracy of the needle tube 116.

[0060] Here, the structure of the laser alignment device and the auxiliary calibration scheme are not limited and can be determined according to actual requirements, as long as the auxiliary calibration of the adjustment distance accuracy of the needle tube 116 can be formed.

[0061] The needle tube 116 and the support 115 thus arranged can ensure the stability of the impact position and angle of the needle tube, and can stably and accurately adjust the distance between the outlet of the needle tube and the surface of the sample to be tested, so as to adapt to different samples and meet test requirements.

[0062] In some embodiments of the present application, the water temperature controller 111 in the tester is mainly composed of a PT100 temperature sensor, a heating rod, and a cooling module.

[0063] The heating rod is used as a heating source to heat the test water in the water tank 118 and increase the water temperature.

[0064] As a further supplement, the working state of the heating rod can be controlled by the intelligent control component 120, and the working state can be adjusted under the control of the intelligent control component 120.

[0065] The cooling module is used for cooling the test water in the water tank 118, thereby forming a bidirectional temperature control together with the heating rod to realize accurate control of the temperature of the test water in the water tank 118. As an example, the cooling module can be composed of a semiconductor refrigeration sheet, but is not limited thereto.

[0066] The PT100 temperature sensor is used for monitoring the water temperature of the test water in the water tank 118 in real time and feeding back to the intelligent control component 120, so that the intelligent control component 120 controls the working state of the heating rod according to the temperature to realize dynamic regulation and control of the water temperature in the water tank 118.

[0067] The water temperature controller 111 formed thereby cooperates with the intelligent control component 120 to accurately and dynamically regulate and control the water temperature in the water tank 118, and can stably control the water temperature in the range of 22.5±2.5℃.

[0068] In some embodiments of the present application, the flow meter 113 in the tester adopts an electromagnetic flow meter or an ultrasonic flow meter, so as to accurately measure the flow rate of the water flow to ensure the accuracy of the subsequent control and adjustment of the water flow control component 114.

[0069] In some embodiments of the present application, the water flow control component 114 in the tester uses a water flow adjusting valve driven by a stepping motor, and the flow meter 113 and the intelligent control component 120 form a closed-loop control circuit to realize fast response and zero drift compensation based on closed-loop PID control, so as to dynamically adjust the opening size of the water flow adjusting valve according to the feedback signal of the flow meter 113, and then adjust the water flow size, so as to ensure that the water flow speed is stably within a preset range, such as 9.0±0.1 m / s, to meet the test requirements.

[0070] In some embodiments of the present application, the intelligent control component 120 in the tester serves as a calculation and control center of the entire tester, and is used for coordinating and controlling the corresponding components in the tester to realize automatic operation of the entire test process, such as parameter setting, start / stop control, automatic regulation and control, data viewing and saving, etc.

[0071] Specifically, the intelligent control component 120 is preferably composed of an embedded touch screen control unit (such as based on STM32+TFT-LCD), which integrates an HMI human-machine interface. It should be noted that the composition scheme of the intelligent control component 120 is not limited thereto.

[0072] Further, the intelligent control component 120 integrates a PID control module, which is configured to control the working state of the water temperature controller 111 based on closed-loop PID control according to the temperature monitored by the water temperature controller 111 in real time, so as to stabilize the water temperature at a target value.

[0073] Meanwhile, the PID control module can also adjust the working state (e.g. opening degree) of the water flow control component 114 in real time based on closed-loop PID control according to the real-time water flow monitored by the flow meter 113, so as to stabilize the water flow speed at the target value.

[0074] As a further illustration, the PID control module specifically implements closed-loop PID control for temperature and water flow speed based on incremental PID control algorithm: ; Wherein: u ( t ): control valve opening degree signal (step motor pulse number) or control temperature signal, control period: ≤100 ms, ensuring dynamic response; e ( t ): error value, e ( t )= Q target- Q real, Qreal is the measured actual value, Q target is the target value; K p : proportional gain; K i : integral gain; K d : derivative gain.

[0075] For K p , K i , K d , the following settings are adopted: For K p , Ziegler-Nichols method or trial-and-error method is adopted for tuning, and the initial value is 1.5 ~ 3.0.

[0076] For K i , the integral time constant T i is adjusted: K i = K p / T i , T i = 20 ~ 50 s.

[0077] For K d , which is used to suppress overshoot, it can be set to 0 first, and then gradually increased, with the initial value being 0.1 ~ 0.5.

[0078] Accordingly, the PID control module can achieve high-precision and real-time stable control of water flow speed, stabilize the actual water flow speed Qreal at the target value Qtarget=9.0 m / s, with control error ≤ ±0.1 m / s and response time ≤ 1 s.

[0079] As further settings, the intelligent control component 120 also supports preset test procedures, such as "standard test", "accelerated aging test", etc.

[0080] The intelligent control component 120 also integrates a remote communication module, which can realize remote monitoring function, and is connected to a mobile terminal or PC terminal software through Bluetooth or Wi-Fi, supports remote start test, real-time data viewing, and abnormal alarm receiving.

[0081] The intelligent control component 120 also has a built-in database, which supports numbering management of different material samples, automatically establishes a "material-test condition-test result" three-dimensional association file, and supports historical data comparison and trend analysis.

[0082] The following will specifically describe the process of automatic water flow impact test by the intelligent water flow impact tester.

[0083] The process of automatic water flow impact test based on the intelligent water flow impact tester mainly includes parameter presetting and automatic calibration stage, intelligent test execution stage, and data recording and analysis stage.

[0084] First, in the parameter presetting and automatic calibration stage.

[0085] In this stage, the sample to be tested is placed on the sample table of the tester, and the control and display panel on the tester is set as follows: water temperature 20-25℃, target flow rate 9.0 m / s, water impact time, impact angle 45°.

[0086] At this time, the tester will automatically control the water temperature controller to heat the temperature in the water tank according to the set parameters, and the water temperature will rise to the set value, such as 23℃; and the water pump is started at the same time.

[0087] At the same time, the sample table in the tester adjusts the table surface to be 45° relative to the horizontal plane according to the set impact angle of 45°; and adjusts the needle tube to the preset standard position through the needle tube installation adjustment mechanism, which can be aligned through the laser auxiliary device.

[0088] The tester performs self-checking on the flow meter, water temperature controller and water flow control valve, and completes zero point calibration.

[0089] After the above parameter presetting and automatic calibration are completed, the intelligent test execution stage will be entered.

[0090] In this stage, the water flow control valve is automatically opened according to the set time, the water flow from the circulating water pump is controlled to enter the needle tube, and the needle tube facing the sample to be tested on the sample table generates impact water flow for impact test.

[0091] During this process, the water flow generated by the flushing test will flow into the water tank. At the same time, the instrument will collect the water temperature in the water tank in real time through the water temperature controller, collect the water flow in the pipeline in real time through the flow meter, acquire the events recorded by the timer in real time, and acquire the valve position signal of the water flow control valve (corresponding to the opening degree of the valve position signal) in real time. Based on the collected real-time data, the instrument will use closed-loop PID control to stabilize the water flow velocity at 9.0±0.1m / s and accurately control the water temperature at 20–25℃.

[0092] See Figure 3 The corresponding closed-loop PID control process is as follows: First, based on the water flow velocity setting and temperature setting ( Q The current error is calculated using the target value, the actual flow rate (corresponding to the flow velocity value) collected in real time by the flow meter, and the temperature value (Qreal) collected in real time by the water temperature controller. e ( t )= Q target- Q Real.

[0093] Next, the PID control input is calculated. Here, an incremental PID algorithm is used to calculate the change in the control input and generate corresponding control output signals based on the water flow velocity and temperature. u ( t ): .

[0094] Next, according to the control output signal u ( t The opening degree of the water flow control valve and the heating status of the heat pump in the water temperature controller are adjusted.

[0095] Next, feedback response and stability judgment are performed, and the error is continuously monitored. If it exceeds the error range, it is adjusted until it stabilizes and enters the holding phase, that is, the water flow rate and temperature in the tester stabilize at the set value.

[0096] Throughout the closed-loop control process, the corresponding control process data (time, flow rate, valve opening, error) are recorded and stored in real time.

[0097] This stage ends the test according to the test time set by the timer, automatically shutting off the water flow and water pump. At the same time, a test report is generated based on the recorded relevant data. The test report includes charts and data can be exported as CSV / Excel.

[0098] After completing the intelligent test execution phase described above, the data recording and analysis phase will begin.

[0099] This stage will store all test data including timestamp, flow rate, water temperature, angle, state, etc. in the local SD card or upload to the cloud.

[0100] At the same time, it can support batch, sample number, and test condition classification retrieval.

[0101] The following illustrates the process of automatic water flow impact testing of the intelligent water flow impact tester through corresponding examples.

[0102] Example 1: This example completes the standard test process based on the standard test program integrated in the instrument. The entire standard test process includes the following steps: 1. Fix the super-hydrophobic sample (such as fluorinated polypropylene coated glass) on the sample table and adjust to a 45° angle; 2. Set the water temperature to 23℃, the water impact time to 60s, and the target flow rate to 9.0 m / s through the control and display panel; 3. The system automatically starts the water pump, and the test begins after the water temperature rises to 23℃; 4. The flow meter feeds back in real time, and the PID algorithm dynamically adjusts the water flow control valve to keep the flow rate stable at 9.0 m / s; 5. After the test is completed, the system automatically generates a report containing the flow rate curve and water temperature changes; 6. All data are saved to the SD card and can be exported in Excel and PDF formats.

[0103] Example 2: This example completes the accelerated aging test based on the accelerated aging test program integrated in the instrument. The entire accelerated aging test process includes the following steps: 1. Fix the super-hydrophobic sample (such as fluorinated polypropylene coated glass) on the sample table and adjust to a 45° angle; 2. Set the "water impact 30s → stop 30s → water impact 30s" cycle mode through the control and display panel, and run continuously for 100 times to simulate long-term impact.

[0104] 3. The system automatically records the contact angle change after each water impact and draws a "contact angle decay curve" for evaluating the material durability.

[0105] Based on the above examples, the intelligent water flow impact tester provided by the present application is highly integrated, precisely controllable, and highly automated. It not only meets the technical requirements of the water flow impact tester in GB / T 45017-2024 clauses 4.5 and 6.4, but also has advantages such as data traceability, result determination, and good repeatability, making it suitable for long-term performance evaluation of super-hydrophobic materials in universities, testing institutions, and new material enterprises.

[0106] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An intelligent water flow impact tester, characterized in that, The intelligent control assembly, the water temperature controller, the timer, the flow meter, the water flow control assembly, the support, the needle tube, the sample table, the water tank and the circulating water pump are included. The sample table is used to carry the sample to be tested, and the table surface of the sample table carrying the sample to be tested can be adjusted and kept at an angle of 0-45° relative to the horizontal plane. The support is arranged corresponding to the sample table and used to carry the needle tube. The needle tube is arranged on the support and cooperates with the table surface of the sample table carrying the sample to be tested to generate an impact water flow on the sample to be tested carried on the sample table according to the test requirement. The water tank stores the test water, and the water temperature controller is arranged in cooperation with the water tank to stably control the water temperature in the water tank within the test requirement range. The circulating water pump is connected with the water tank and the needle tube through the circulating water pipeline to deliver the water in the water tank to the needle tube to generate the impact water flow. The water flow control assembly is arranged in the circulating water pipeline to dynamically adjust the water flow size. The flow meter is arranged in the circulating water pipeline to monitor the water flow in real time. The timer is used to set or / and record the water flow duration of the needle tube. The intelligent control assembly cooperates with the water temperature controller, the timer, the flow meter, the water flow control assembly and the circulating water pump to control the working state of the water flow control assembly based on the closed loop PID control according to the real-time water flow monitored by the flow meter, so that the water flow speed is stably controlled within the test requirement range.

2. The intelligent water flow impact tester according to claim 1, characterized in that, The water temperature controller is configured with a heating module, a temperature sensor and a PID control module. The PID control module controls the working state of the heating module based on the closed loop PID control according to the temperature monitored by the temperature sensor in real time.

3. The intelligent water flow impact tester according to claim 1, characterized in that, The water flow control assembly is realized based on the water flow adjusting valve driven by the stepping motor.

4. The intelligent water flow impact tester according to claim 1, characterized in that, The needle tube is arranged on the support based on the adjustable mechanism, and the distance between the needle tube outlet and the surface of the sample to be tested on the sample table can be adjusted through the adjustable mechanism.

5. The intelligent water flow impact tester according to claim 1, characterized in that, The table surface of the sample table adopts a rotary table surface.

6. The intelligent water flow impact tester according to claim 1, characterized in that, The water tank is provided with a sediment tank at the bottom.

7. The intelligent water flow impact tester according to claim 6, characterized in that, The water tank is provided with a drainage assembly.

8. An intelligent water flow impact test method, characterized in that, The test method acquires the flow of the impact water flow on the surface of the sample to be tested in real time and dynamically controls the flow rate of the impact water flow based on the closed loop PID control mode, so that the water flow speed is stably controlled within the test requirement range. 9.The intelligent water flow impact test method according to claim 8, characterized in that, The test method also acquires the temperature of the impact water flow on the surface of the sample to be tested in real time and dynamically controls the temperature of the impact water flow based on the closed loop PID control, so that the water flow temperature is stably controlled within the test requirement range. 10.The intelligent water flow impact test method according to claim 8, characterized in that, The test method synchronously times the impact test process and generates a test report after the test is completed.

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