Water pump sealing performance testing method, device, equipment, storage medium and product

Abstract

The invention discloses a water pump leakproofness testing method, device and equipment, a storage medium and a product, and relates to the technical field of fluid machinery detection, and the disclosed water pump leakproofness testing method is applied to a water pump leakproofness detection device connected with a water pump, a piston, a booster and a detection device. The water pump sealing performance test method comprises the following steps: when it is detected that a preset volume of water is injected into a space in a water pump, injecting gas with a preset air pressure into the water pump; pushing the piston at a preset speed through the booster, and stopping the action of the booster when detecting that the water pressure in the water pump reaches a preset water pressure range; and when it is detected that the water pressure drops or does not continuously rise, it is judged that the sealing performance of the water pump does not meet the target requirement. The sealing performance of the water pump is determined by detecting the condition of the water pressure in the water pump in real time, and compared with a traditional detection method, the water pump sealing detection method is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid machinery detection, and particularly to a water pump sealing performance testing method, device, equipment, storage medium and product. Background Art

[0002] Traditional water pump sealing performance detection mainly relies on methods such as the immersion visual bubble method, air tightness test, turbine type leakage test, and vacuum detection. Among them, the immersion method judges leakage by observing bubbles. The equipment is simple but has low accuracy, is prone to misjudgment, and may damage the workpiece; although the air tightness test is non-toxic and harmless, the equipment cost is high and it is not sensitive to micro leaks; the vacuum method can detect micro leaks, but the operation is complex and the effect on high-viscosity substances is limited. These traditional methods generally have problems such as low detection efficiency, large human error, poor environmental adaptability, and possible damage to the tested parts, and it is difficult to meet the modern requirements of high-precision and non-destructive detection. Summary of the Invention

[0003] The main purpose of the present invention is to provide a water pump sealing performance testing method, device, equipment, storage medium and product, aiming to solve the technical problem that the detection results of traditional water pump sealing performance are not accurate enough.

[0004] To achieve the above object, the present invention proposes a water pump sealing performance testing method, which is applied to the water pump sealing detection device respectively connected to a water pump, a piston, a booster, and a detection device. The water pump sealing performance testing method includes:

[0005] When it is detected that a preset volume of water is injected into the space inside the water pump, inject gas with a preset air pressure into the water pump;

[0006] Push the piston at a preset speed through the booster, and stop the action of the booster when it is detected that the water pressure inside the water pump reaches a preset water pressure range;

[0007] When it is detected that the water pressure drops or does not continue to rise, it is determined that the water pump sealing performance does not meet the target requirements.

[0008] In an embodiment, after the step of when it is detected that the water pressure drops or does not continue to rise, and it is determined that the water pump sealing performance does not meet the target requirements, it includes:

[0009] When it is detected that the water pressure reaches the preset water pressure range, keep the current water pressure for a preset duration to obtain a water pressure change curve;

[0010] Obtain the real-time displacement data of the piston, and perform synchronous analysis with the water pressure change curve to obtain the three-dimensional coordinates of the piston leakage position;

[0011] According to the three-dimensional coordinates, determine the defective area of the water pump sealing structure.

[0012] In one embodiment, the preset water pressure range includes a first water pressure range and a second water pressure range, and the water pressure change curve includes a low-pressure change curve and a high-pressure change curve. The step of obtaining the water pressure change curve by maintaining the current water pressure for a preset duration when it is detected that the water pressure reaches the preset water pressure range includes:

[0013] Detecting the water pump in the first water pressure range corresponding to the low-pressure pre-inspection stage to obtain the low-pressure change curve;

[0014] Detecting the water pump in the second water pressure range corresponding to the high-pressure fine-inspection stage to obtain the high-pressure change curve.

[0015] In one embodiment, after the step of determining the defective area of the water pump sealing structure according to the three-dimensional coordinates, it includes:

[0016] When the test is completed, generating a sealing report of the water pump;

[0017] The sealing performance includes a pressure change curve, the position of the defective area, repair suggestions, and an evaluation of the durability of the sealing structure.

[0018] In one embodiment, after the step of generating a sealing report of the water pump when the test is completed, it includes:

[0019] Obtaining the sealing report generated each time the water pump test is completed;

[0020] Training and analyzing each sealing report through a model trained with historical leakage data to predict the leakage risk level of the water pump.

[0021] In one embodiment, before the step of continuously detecting the water pressure in real time and determining that the sealing performance of the water pump does not meet the target requirements when it is detected that the water pressure drops or does not continuously rise, it includes:

[0022] Detecting the real-time water temperature inside the water pump;

[0023] According to the temperature compensation mechanism, dynamically correcting the real-time water temperature detected by the detection device.

[0024] In addition, to achieve the above object, the present invention also proposes a water pump sealing performance testing device, and the device includes:

[0025] A detection module, configured to inject a gas with a preset air pressure into the water pump when it is detected that the space inside the water pump is filled with a preset volume of water;

[0026] An execution module, configured to push the piston at a preset speed through a booster and stop the action of the booster when the water pressure inside the water pump reaches the preset water pressure range;

[0027] A judgment module, configured to determine that the water pump sealing performance fails to meet the target requirements when it is detected that the water pressure drops or does not continue to rise.

[0028] In addition, to achieve the above object, the present invention further provides a water pump sealing performance testing device, which includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the water pump sealing performance testing method as described above.

[0029] In addition, to achieve the above object, the present invention further provides a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the water pump sealing performance testing method as described above are implemented.

[0030] In addition, to achieve the above object, the present invention further provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the water pump sealing performance testing method as described above are implemented.

[0031] One or more technical solutions proposed by the present invention have at least the following technical effects:

[0032] In the present invention, when it is detected that a preset volume of water is injected into the space inside the water pump, gas with a preset air pressure is injected into the water pump; the piston is pushed by a booster at a preset speed, and the operation of the booster is stopped when it is detected that the water pressure inside the water pump reaches the preset water pressure range; when it is detected that the water pressure drops or does not continue to rise, it is determined that the water pump sealing performance fails to meet the target requirements. The present invention determines the sealing performance of the water pump by detecting the water pressure inside the water pump in real time. Compared with the traditional detection method, the water pump sealing detection method of the present invention is more accurate. Description of the Drawings

[0033] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 It is a schematic flowchart provided for Embodiment 1 of the water pump sealing performance testing method of the present invention;

[0036] Figure 2It is a schematic flow chart provided for the second embodiment of the water pump sealing performance testing method of the present invention;

[0037] Figure 3 It is a schematic flow chart provided for the third embodiment of the water pump sealing performance testing method of the present invention;

[0038] Figure 4 It is a schematic module structure diagram of the water pump sealing performance testing device according to the embodiment of the present invention;

[0039] Figure 5 It is a schematic device structure diagram of the hardware operating environment involved in the water pump sealing performance testing method according to the embodiment of the present invention.

[0040] The implementation, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0041] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present invention, and are not used to limit the present invention.

[0042] For a better understanding of the technical solutions of the present invention, the following will be described in detail in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0043] The main solution of the embodiment of the present invention is: when it is detected that the space inside the water pump is filled with a preset volume of water, inject gas with a preset air pressure into the water pump; use a booster to push the piston at a preset speed, and stop the action of the booster when it is detected that the water pressure inside the water pump reaches the preset water pressure range; when it is detected that the water pressure drops or does not continue to rise, it is determined that the sealing performance of the water pump does not meet the target requirements.

[0044] In this embodiment, for the convenience of description, the following will be described with the recognition controller as the execution subject.

[0045] As a key device in the industrial field, the sealing performance of the water pump directly affects the operation efficiency and safety of the device. In the prior art, the sealing performance of the water pump is mostly detected by the static water pressure testing method, that is, by observing whether the pressure drops after pressurization to judge the sealing performance. However, this method has the following problems: it is impossible to accurately locate the defect area: it can only judge whether the sealing performance meets the standard, but cannot identify the specific leakage location, resulting in low maintenance efficiency. Large environmental interference: the influence of water temperature change on water pressure detection is not considered, resulting in large errors in test results. Lack of prediction ability: historical data is not combined for leakage risk analysis, and it is difficult to achieve preventive maintenance.

[0046] The present invention provides a solution. When it is detected that the space inside the water pump is filled with water of a preset volume, gas of a preset air pressure is injected into the water pump. The booster pushes the piston at a preset speed and stops the action of the booster when it is detected that the water pressure inside the water pump reaches the preset water pressure range. When it is detected that the water pressure drops or does not continue to rise, it is determined that the water pump seal does not meet the target requirements. The present invention determines the water pump seal by detecting the water pressure inside the water pump in real time. Compared with the traditional detection method, the water pump seal detection method of the present invention is more accurate.

[0047] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication, and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device, a water pump seal test device, etc. that can implement the above functions. Hereinafter, taking the controller as an example, this embodiment and the following embodiments will be described.

[0048] Based on this, an embodiment of the present invention provides a water pump seal test method, referring to Figure 1 , Figure 1 which can be the flowchart of the first embodiment of the water pump seal test method of the present invention.

[0049] In this embodiment, the water pump seal test method includes steps S10 to S30:

[0050] Step S10, when it is detected that the space inside the water pump is filled with water of a preset volume, gas of a preset air pressure is injected into the water pump.

[0051] It should be noted that the above preset volume can be 90% of the water pump volume or 80% of the water pump volume;

[0052] It should be noted that the above gas can be nitrogen or helium, etc.;

[0053] It should be noted that the above preset air pressure can be 300Kpa or 900Kpa.

[0054] In a specific implementation, when the above detection device detects that all cavities (such as the pump body, connecting pipes, etc.) inside the water pump are filled with water to 90% state, according to the gas volume preset in advance according to the water pump capacity and test requirements, gas of a preset air pressure is injected into the water pump to form an air cushion layer or a pressurized environment during the seal test to avoid the interference of water pressure fluctuations on the detection results. Specific implementation steps: Exemplarily, start the water injection process and continuously inject water through the water pump inlet. Real-time collect the signals of the liquid level sensor or the float switch. When the top sensor is triggered or the float switch is closed, it is determined that the water injection is completed. Continuously monitor the inlet and outlet pressures during the water injection process until the pressure difference stabilizes within the set threshold.

[0055] Step S20: Push the piston at a preset speed by a booster, and stop the operation of the booster when the water pressure inside the water pump is detected to reach the preset water pressure range.

[0056] It should be noted that the above-mentioned booster can be a mechanical or hydraulic drive device for pushing the piston at a controllable speed to generate pressure;

[0057] It should be noted that the above-mentioned preset speed can be 2 mm / s;

[0058] It should be noted that the above-mentioned piston can be a moving part connected to the water pump cavity, and the cavity volume is changed by the thrust of the booster to adjust the water pressure;

[0059] It should be noted that the above-mentioned preset water pressure range includes a first water pressure range and a second water pressure range. Among them, the first water pressure range can be 100 Kpa to 300 Kpa, and the second water pressure range can be 900 Kpa to 1000 Kpa.

[0060] In specific implementation, the piston displacement is monitored in real time through a servo motor encoder or a displacement sensor and fed back to the controller. The controller dynamically adjusts the motor speed through the PID algorithm to ensure that the speed deviation is less than ±0.1 mm / s. The sensor collects 10 pressure data per second, and the noise is eliminated through moving average filtering. When the pressure reaches the lower limit of the preset range, the system reduces the booster speed to 50% to avoid overshoot. When the pressure reaches the upper limit, a stop command is immediately sent to cut off the power source of the booster. If the pressure exceeds the upper limit, a mechanical brake is enabled to forcibly stop the piston movement to protect the water pump structure.

[0061] Step S30: When it is detected that the water pressure drops or does not continue to rise, it is determined that the water pump sealing performance does not meet the target requirements.

[0062] It should be noted that the above-mentioned water pressure drop refers to the phenomenon that the water pressure inside the water pump gradually decreases from the peak value or the stable value during the test. Exemplarily, if the pressure drops from 1.2 MPa to 1.1 MPa and continues to drop, it indicates a leak;

[0063] It should be noted that the above-mentioned non - continuous rise means that during the pressurization stage, the water pressure does not increase as expected with time, or the rising rate is lower than the preset threshold. Exemplarily, if the pressure only rises from 0.8 MPa to 0.82 MPa within 10 seconds, it is determined as abnormal.

[0064] It can be understood that the above - mentioned not meeting the target requirements refers to the system decision based on the water pressure change trend, indicating that there are sealing defects in the water pump (such as seal ring aging, looseness at the connection, etc.) and it cannot pass the sealing performance test.

[0065] In a specific implementation, after the pressurization is completed, the initial stable pressure value is recorded as a reference. The sensor continuously outputs pressure signals, which are transmitted to the controller after noise is removed through filtering (such as Kalman filtering). Leakage alarm trigger: If the current pressure value is lower than the baseline pressure and the difference exceeds a threshold value (such as 0.05 MPa), a leakage alarm is triggered. Abnormal determination for non - continuous increase: Calculate the pressure increment per unit time (ΔP / Δt). If the increment is lower than a preset rate (such as 0.02 MPa / s), it is determined as abnormal.

[0066] This embodiment provides a method for testing the water pump seal. When it is detected that a preset volume of water is injected into the space inside the water pump, gas with a preset air pressure is injected into the water pump. The piston is pushed at a preset speed by a booster, and the operation of the booster is stopped when it is detected that the water pressure inside the water pump reaches the preset water pressure range. When it is detected that the water pressure drops or does not continuously rise, it is determined that the water pump seal does not meet the target requirements. The present invention determines the water pump seal by detecting the water pressure inside the water pump in real time. Compared with traditional detection methods, the water pump seal detection method of the present invention is more accurate.

[0067] Based on the first embodiment of the present invention, in the second embodiment of the present invention, the same or similar content as the above - mentioned first embodiment can be referred to the above introduction and will not be repeated hereinafter. On this basis, please refer to Figure 2 , Figure 2 which is the flow schematic diagram provided for the second embodiment of the water pump seal testing method of the present invention.

[0068] In a feasible implementation manner, after step S30, steps S301 - S303 may further be included:

[0069] Step S301, when it is detected that the water pressure reaches the preset water pressure range, keep the current water pressure for a preset duration to obtain a water pressure change curve.

[0070] It should be noted that the above - mentioned preset duration can be 10 s - 30 s;

[0071] It should be noted that the above - mentioned water pressure change curve refers to the time - pressure relationship diagram drawn by continuously collecting water pressure data through a sensor within the preset duration. The curve reflects the pressure fluctuation, stability, and potential leakage trend, and is the core basis for seal determination.

[0072] In a specific implementation, through high - precision pressure sensing, closed - loop PID control, and dynamic data acquisition technology, accurate maintenance of water pressure and reliable generation of the change curve are achieved. It is detected in real time whether the water pressure enters the preset range, and the booster or pressure relief valve is dynamically adjusted through the PID algorithm to stabilize the pressure, and data is continuously recorded within the preset duration to generate a water pressure change curve.

[0073] Step S302: Obtain the real-time displacement data of the piston, and perform synchronous analysis with the water pressure change curve to obtain the three-dimensional coordinates of the piston leakage position.

[0074] It is understandable that the above real-time displacement data refers to the information on the change in the piston position (unit: millimeter) continuously collected by sensors during the test, including the axial displacement (along the piston movement direction) and possible radial offsets (such as lateral movement due to uneven sealing).

[0075] It is understandable that the above synchronous analysis refers to aligning the displacement data and the water pressure data along the same time axis and analyzing the temporal correlation between the two (for example, whether the displacement rebounds abnormally when the pressure drops).

[0076] It is understandable that the above three-dimensional coordinates refer to the spatial position (X, Y, and Z axis coordinates) of the leakage point on the piston or the sealing structure, which is used to accurately locate the defective area (such as a damaged sealing ring or a loose flange connection).

[0077] In a specific implementation, through high-precision sensors, timing synchronization technology, and three-dimensional modeling algorithms, accurate positioning of the piston leakage position in the water pump sealing test is achieved. The piston displacement and water pressure data are collected in real time and strictly synchronized. The leakage correlation signal is identified through correlation analysis, and finally, the abnormal displacement is mapped to three-dimensional space coordinates in combination with the piston structure model.

[0078] Step S303: Determine the defective area of the water pump sealing structure according to the three-dimensional coordinates.

[0079] It should be noted that the above defective area refers to the sealing failure area caused by material aging, improper installation, or mechanical damage. Common types include damaged sealing rings, leakage at flange connections, cracks in the pump body, or wear of piston ring grooves, etc.

[0080] In a specific implementation, the CAD model of the water pump is imported into the analysis software (SolidWorks or ANSYS), and the origin of the global coordinate system is defined (usually the center of the water pump base). The rigid body transformation algorithm (such as the least squares method) is used to convert the coordinates of the leakage point in the sensor coordinate system into the model coordinate system. Exemplarily: If the origin of the sensor coordinate system is offset by (ΔX = 5mm, ΔY = 10mm, ΔZ = 0), the model coordinates of the leakage point can be (X = 25mm, Y = 45mm, Z = 50mm). Mark the leakage point in the model and perform a spatial comparison with the known sealing structure. According to the geometric relationship between the position of the leakage point and the sealing structure, preset determination rules. If the coordinates are within the ±5mm area around the flange bolt hole, it is determined that the bolt is loose or the gasket fails. If the coordinates are within the O-ring groove, it is determined that the O-ring is aged or there is an installation deviation. If the coordinates are on the pump body wall and far from the connection, it is determined that there is material fatigue or stress concentration. Through the fusion analysis of three-dimensional coordinate mapping, rule base and machine learning, as well as AR-assisted verification, accurate positioning and intelligent classification of the defect area of the water pump sealing structure are realized. Align the three-dimensional coordinates of the leakage point with the digital model, and combine the preset rules and machine learning model to determine the defect area.

[0081] In this embodiment, step S301 includes steps S3011 to S3012:

[0082] Step S3011, detecting the water pump within the corresponding first water pressure range in the low-pressure pre-inspection stage to obtain the low-pressure change curve.

[0083] Step S3012, detecting the water pump within the corresponding second water pressure range in the high-pressure fine-inspection stage to obtain the high-pressure change curve.

[0084] It should be noted that the above low-pressure change curve refers to the data of the change of water pressure with time (such as pressure fluctuation, stability, etc.) collected in real time by controlling the water pump to operate within a lower first water pressure range in the low-pressure pre-inspection stage, forming a low-pressure change curve reflecting the basic performance of the water pump;

[0085] It should be noted that the above high-pressure change curve refers to the water pressure response (such as peak pressure, attenuation rate, etc.) under extreme pressure continuously monitored by lifting the water pump to a higher second water pressure range in the high-pressure fine-inspection stage, generating a high-pressure change curve characterizing the water pump's pressure resistance ability.

[0086] It is understandable that the above low-pressure curve focuses on conventional pressure conditions (such as daily use), and the above high-pressure curve simulates extreme pressure conditions (such as overload scenarios); the above low-pressure curve is used to evaluate basic performance (such as sealing performance and stability), and the above high-pressure curve is used to test pressure resistance, fatigue resistance, and potential failure risks; the above low-pressure pre-inspection is used to quickly screen the basic functions of the water pump, and the above high-pressure fine-inspection is used to verify long-term reliability or safety under extreme conditions.

[0087] In specific implementation, through staged pressure testing and hyperbola comparative analysis, hierarchical detection and refined diagnosis of the water pump's sealing performance are achieved. Major defects are quickly screened in the low-pressure pre-inspection stage to generate a low-pressure change curve; in the high-pressure fine-inspection stage, minute leaks are deeply detected to generate a high-pressure change curve, and the sealing performance is determined through curve slope and fluctuation analysis.

[0088] Based on the second embodiment of the present invention, in the third embodiment of the present invention, for the same or similar content as the above second embodiment, reference can be made to the above introduction and will not be repeated hereinafter. On this basis, please refer to Figure 3 , Figure 3 which is a schematic flow chart provided for the third embodiment of the water pump sealing performance testing method of the present invention.

[0089] In a feasible implementation manner, after step S303, steps S3031 to S3032 may further be included:

[0090] Step S3031, when the test ends, generate a sealing report of the water pump.

[0091] Step S3032, the sealing performance includes a pressure change curve, the position of the defective area, repair suggestions, and an evaluation of the durability of the sealing structure.

[0092] It should be noted that the above sealing report can be a comprehensive technical document containing all the key results and analyses of the water pump sealing performance test, and is used to guide maintenance decisions and quality evaluations;

[0093] It should be noted that the above repair suggestions refer to targeted solutions generated based on the defect type and historical maintenance data (such as replacing the sealing ring, adjusting the bolt torque);

[0094] It should be noted that the above evaluation of the durability of the sealing structure refers to predicting the reliability of the sealing structure during long-term use (such as estimating the remaining life) through the pressure curve slope, defect distribution, and material performance parameters.

[0095] In specific implementation, multi-source data such as pressure sensors, displacement sensors, and temperature sensors are integrated and stored in a database (such as MySQL or time series database InfluxDB) aligned by timestamp. Among them, the above-mentioned sealing report template engine uses Jinja2 or Apache POI to dynamically generate report templates, supporting the insertion of charts, tables, and 3D model annotations. First, data preprocessing is performed to clean the original data (such as removing noise and filling missing values), and key features are extracted (such as the pressure drop slope and defect coordinates); then the report content is filled, an interactive curve graph is generated, and the pressurization stage, pressure holding duration, and leakage event points are marked. The 3D coordinates are mapped to the water pump CAD model, and the leakage severity is marked using a color gradient; finally, repair suggestions and durability evaluations are obtained. Through multi-source data integration, knowledge graph-driven, and durability modeling, the automated generation and intelligent analysis of the water pump sealing test report are realized. The test data is integrated to generate a pressure change curve and a defect location map, targeted repair suggestions are provided based on the knowledge graph and historical data, and the durability of the sealing structure is evaluated through a fatigue life model.

[0096] In a feasible implementation manner, after step S3031, steps S30311 to S30312 may further be included:

[0097] Step S30311, obtaining the sealing report generated at the end of each test of the water pump.

[0098] Step S30312, training and analyzing each sealing report through a model trained with historical leakage data to predict the leakage risk level of the water pump.

[0099] It should be noted that the above-mentioned historical leakage data refers to the accumulated water pump test data and actual leakage event records in the past, including leakage location, leakage degree, repair measures, and subsequent usage performance, etc., which are used to train the prediction model;

[0100] It should be noted that the above-mentioned training model can be a random forest, or a gradient boosting tree or an LSTM neural network, etc. By analyzing the correlation between the features in the historical data and the leakage results, prediction rules are constructed;

[0101] It should be noted that the above-mentioned leakage risk level classifies the probability of future leakage of the water pump according to the model prediction results (such as high, medium, and low levels), and quantifies the risk to support preventive maintenance decisions.

[0102] In specific implementation, through automated data collection, multi-dimensional feature engineering, and machine learning modeling, the intelligent prediction of the water pump leakage risk is realized. The sealing report is obtained and stored in real time, key features such as the pressure curve and defect distribution are extracted, a high-precision prediction model is trained using historical data, and finally the leakage risk level and confidence level are output.

[0103] In a feasible implementation manner, before step S30, steps S304 to S305 may further be included:

[0104] Step S304, detecting the real-time water temperature inside the water pump.

[0105] Step S305, dynamically correcting the real-time water temperature detected by the detection device according to the temperature compensation mechanism.

[0106] It should be noted that the above real-time water temperature refers to the instantaneous temperature value of the water inside the water pump, which is continuously measured by a sensor and is used to evaluate the influence of the ambient temperature on the water pressure detection;

[0107] It should be noted that the above temperature compensation mechanism may be a dynamic correction algorithm, which adjusts the output value of the pressure sensor according to the change of the water temperature to eliminate the measurement error caused by temperature drift (for example, the sensor signal shifts due to the increase of the water temperature).

[0108] In specific implementation, first, a high-precision temperature sensor is installed in a stable water flow area inside the water pump (such as near the water inlet), and long-term stability is ensured through waterproof encapsulation. The sensor converts the water temperature into an electrical signal and transmits it to the controller in real time. Subsequently, based on the above temperature compensation mechanism, the data is dynamically corrected. The system reads the difference between the current water temperature and the reference temperature, applies a pre-calibrated compensation formula, processes the non-linear temperature drift through polynomial fitting or look-up table method, and adjusts the sensor output value in real time to eliminate the interference of temperature on the pressure detection. At the same time, the controller integrates the Kalman filter algorithm to predict the temperature trend, combines digital filtering (moving average method) to suppress electromagnetic noise, and updates the compensation parameters through regular constant temperature calibration to ensure that the correction error within the full temperature range is less than ±0.05%. Finally, the corrected water temperature and pressure data are synchronously output to the industrial control system to achieve high-precision sealing test and ensure the detection reliability of the water pump in a dynamic environment.

[0109] It should be noted that the above examples are only for understanding the present invention and do not constitute a limitation to the water pump sealing test method of the present invention. Based on this technical concept, more forms of simple transformation are within the protection scope of the present invention.

[0110] The present invention also provides a water pump sealing test device. Please refer to Figure 4 , the water pump sealing test device includes:

[0111] The detection module 10 is used to inject gas with a preset air pressure into the water pump when it detects that the space inside the water pump is filled with water of a preset volume;

[0112] The execution module 20 is used to push the piston at a preset speed through a booster and stop the action of the booster when the water pressure inside the water pump reaches a preset water pressure range;

[0113] A judgment module 30, configured to determine that the water pump sealing performance fails to meet the target requirements when it is detected that the water pressure drops or does not continuously rise.

[0114] The water pump sealing performance testing device provided by the present invention adopts the water pump sealing performance testing method in the above-mentioned embodiment, and can solve the technical problem of water pump sealing performance testing. Compared with the prior art, the beneficial effects of the water pump sealing performance testing device provided by the present invention are the same as those of the water pump sealing performance testing method provided by the above-mentioned embodiment, and other technical features in the water pump sealing performance testing device are the same as the features disclosed in the method of the above-mentioned embodiment, and will not be elaborated herein.

[0115] The present invention provides a water pump sealing performance testing device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the water pump sealing performance testing method in the first embodiment above.

[0116] Next, refer to Figure 5 , which shows a schematic structural diagram of a water pump sealing performance testing device suitable for implementing the embodiments of the present invention. The water pump sealing performance testing device in the embodiments of the present invention may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistant), PADs (Portable Application Description), PMPs (Portable Media Player), in-vehicle terminals (such as in-vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The water pump sealing performance testing device shown is only an example and should not impose any limitations on the functions and usage scopes of the embodiments of the present invention.

[0117] As Figure 5As shown, the water pump sealing test device may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM: Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the water pump sealing test device are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems may be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the water pump sealing test device to communicate with other devices wirelessly or wiredly to exchange data. Although the figure shows a water pump sealing test device with various systems, it should be understood that it is not required to implement or have all the systems shown. Instead, more or fewer systems may be implemented or had.

[0118] In particular, according to the embodiments disclosed in the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program codes for performing the methods shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from a network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the methods of the embodiments disclosed in the present invention are executed.

[0119] The water pump sealing test device provided by the present invention adopts the water pump sealing test method in the above-mentioned embodiment and can solve the technical problems of water pump sealing test. Compared with the prior art, the beneficial effects of the water pump sealing test device provided by the present invention are the same as those of the water pump sealing test method provided by the above-mentioned embodiment, and other technical features in the water pump sealing test device are the same as those disclosed in the method of the previous embodiment, and will not be elaborated here.

[0120] It should be understood that the various parts disclosed in the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0121] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

[0122] The present invention provides a computer-readable storage medium having computer-readable program instructions (i.e., computer programs) stored thereon, and the computer-readable program instructions are used to execute the water pump sealing performance testing method in the above embodiments.

[0123] The computer-readable storage medium provided by the present invention can be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) or flash memory, optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this embodiment, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or combined with an instruction execution system, device, or device. The program code contained on the computer-readable storage medium can be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0124] The above computer-readable storage medium can be included in the water pump sealing performance testing device; or it can exist alone without being assembled into the water pump sealing performance testing device.

[0125] The above computer-readable storage medium carries one or more programs, which, when executed by the water pump sealing test device, cause the water pump sealing test device to: when detecting that the space inside the water pump is filled with a preset volume of water, inject gas with a preset air pressure into the water pump; push the piston at a preset speed through a booster and stop the action of the booster when detecting that the water pressure inside the water pump reaches the preset water pressure range; when detecting that the water pressure drops or does not continue to rise, determine that the water pump sealing does not meet the target requirements.

[0126] Computer program code for performing the operations of the present invention may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (for example, by using an Internet service provider to connect through the Internet).

[0127] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, may be implemented by a dedicated hardware-based system for performing the specified functions or operations, or may be implemented by a combination of dedicated hardware and computer instructions.

[0128] The modules described in the embodiments of the present invention may be implemented in software or in hardware. Among them, the name of the module does not constitute a limitation to the unit itself in some cases.

[0129] The readable storage medium provided by the present invention is a computer-readable storage medium, and the computer-readable storage medium stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned water pump sealing test method, which can solve the technical problems of water pump sealing test. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present invention are the same as those of the water pump sealing test method provided by the above embodiment, and will not be elaborated here.

[0130] The present invention also provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of the water pump sealing test method as described above are implemented.

[0131] The computer program product provided by the present invention can solve the technical problems of water pump sealing test. Compared with the prior art, the beneficial effects of the computer program product provided by the present invention are the same as those of the water pump sealing test method provided by the above embodiment, and will not be elaborated here.

[0132] The above are only some embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the technical concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A method for testing the sealing performance of a water pump, characterized in that, The described water pump sealability testing method is applied to the water pump seal detection device respectively connected to a water pump, a piston, a booster, and a detection device. The water pump sealability testing method includes: When it is detected that the space inside the water pump is filled with a preset volume of water, inject gas with a preset air pressure into the water pump; Push the piston at a preset speed through the booster, and stop the action of the booster when it is detected that the water pressure inside the water pump reaches a preset water pressure range; When it is detected that the water pressure drops or does not continue to rise, determine that the sealability of the water pump does not meet the target requirements.

2. The water pump sealing performance testing method according to claim 1, characterized in that After the step of determining that the sealability of the water pump does not meet the target requirements when it is detected that the water pressure drops or does not continue to rise, it includes: When it is detected that the water pressure reaches the preset water pressure range, maintain the current water pressure for a preset duration to obtain a water pressure change curve; Obtain the real-time displacement data of the piston, and perform synchronous analysis with the water pressure change curve to obtain the three-dimensional coordinates of the piston leakage position; Determine the defective area of the water pump seal structure according to the three-dimensional coordinates.

3. The water pump sealing performance testing method according to claim 2, wherein, The preset water pressure range includes a first water pressure range and a second water pressure range. The water pressure change curve includes a low-pressure change curve and a high-pressure change curve. The step of maintaining the current water pressure for a preset duration to obtain a water pressure change curve when it is detected that the water pressure reaches the preset water pressure range includes: Detect the water pump in the first water pressure range corresponding to the low-pressure pre-inspection stage to obtain the low-pressure change curve; Detect the water pump in the second water pressure range corresponding to the high-pressure fine-inspection stage to obtain the high-pressure change curve.

4. The water pump sealing performance testing method according to claim 1, characterized in that, After the step of determining the defective area of the water pump seal structure according to the three-dimensional coordinates, it includes: Generate a sealability report of the water pump when the test ends; The sealability includes a pressure change curve, the position of the defective area, repair suggestions, and an evaluation of the durability of the seal structure.

5. The water pump sealing performance testing method according to claim 1, characterized in that After the step of generating a sealability report of the water pump when the test ends, it includes: Obtain the sealability report generated at the end of each test of the water pump; Train and analyze each sealability report through a model trained with historical leakage data to predict the leakage risk level of the water pump.

6. The water pump sealing performance testing method according to claim 1, characterized in that Before the step of continuously detecting the water pressure and determining that the sealability of the water pump does not meet the target requirements when it is detected that the water pressure drops or does not continue to rise, it includes: Detect the real-time water temperature inside the water pump; Dynamically correct the real-time water temperature detected by the detection device according to the temperature compensation mechanism.

7. A water pump sealing performance testing device, characterized in that, The device includes: A detection module for injecting gas with a preset air pressure into the water pump when it is detected that the space inside the water pump is filled with a preset volume of water; An execution module for pushing the piston at a preset speed through the booster and stopping the action of the booster when the water pressure inside the water pump reaches a preset water pressure range; A judgment module for determining that the sealability of the water pump does not meet the target requirements when it is detected that the water pressure drops or does not continue to rise.

8. A water pump sealing performance testing device, characterized in that, The device includes: a memory, a processor, and a computer program stored on the memory and executable on the processor. The computer program is configured to implement the steps of the water pump sealability testing method as described in any one of claims 1 to 6.

9. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the water pump sealing performance testing method according to any one of claims 1 to 6 are implemented.

10. A computer program product, characterized in that, The computer program product includes a computer program. When the computer program is executed by a processor, the steps of the water pump sealing performance testing method according to any one of claims 1 to 6 are implemented.

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