Rapid detection method and device for waterproof coiled material

Abstract

The invention relates to the technical field of building material detection, and discloses a waterproof roll rapid detection method and device, and the method comprises the following steps: S1, cutting a waterproof roll into a standard test piece, and fixing the standard test piece to a feeding module; s2, starting a feeding module, and conveying the test piece to a freezing module; s3, reducing the temperature in the freezing module to a target temperature through a semiconductor refrigeration technology, and keeping the temperature stable; s4, after freezing is completed, the test piece is conveyed to a bending test module; s5, performing a bending test on the test piece in the bending test module, and detecting whether cracks appear on the surface or not; and S6, recording detection data and generating a report. Through the rapid freezing module based on semiconductor refrigeration, the environment temperature can be reduced to-25 DEG C to-40 DEG C in a short time, low-temperature stability is kept through the precise temperature control system, the problem that in the prior art, refrigeration and cooling of a compressor are slow is solved, the detection time is greatly shortened, the efficiency is improved, and the rapid sampling inspection requirement of a construction site is met.

Description

Technical Field

[0001] The invention relates to the technical field of building material detection, in particular to a method and a device for rapid detection of waterproof coiled materials. Background Art

[0002] As an important part of the building waterproofing system, the low-temperature flexibility of building waterproofing membranes is particularly critical for their reliability in cold climates. Existing testing methods usually rely on large compressor refrigeration equipment in the laboratory to freeze the membrane samples and then test their flexibility through manual or mechanical means. This type of testing method can achieve basic evaluation of the low-temperature performance of the membrane and has been widely used in the industry. The temperature control capability and accuracy of laboratory equipment are high, which is suitable for testing requirements under standardized testing conditions and can provide theoretical support for engineering quality assessment. However, these technical means are mostly designed for fixed scenarios, and the restrictions on the use environment and operating procedures are also obvious.

[0003] With the diversification of construction needs and the requirement for improved efficiency, existing technologies have exposed some difficult-to-avoid problems in practical applications. First, the traditional method has a long detection cycle. The main reason is that the entire detection process, including freezing treatment and performance testing, is relatively complicated and time-consuming, which is not conducive to the rapid evaluation of coil performance. Secondly, since most of the equipment is fixed, the detection work can only be completed in the laboratory, which limits the quality sampling needs of the construction site, and there may be problems with the samples sent for inspection and the actual materials used. In addition, the existing detection process is relatively complicated and requires manual participation in multiple links, which increases operational errors and volatility of test results. In the actual construction process, these deficiencies may cause a certain degree of trouble to the on-site quality control and performance verification of the coil. Therefore, there is an urgent need for a portable, efficient and accurate detection method to make up for these deficiencies. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method and device for rapid detection of waterproof membranes, which solves the problems of long detection cycle, poor on-site adaptability and complex operation in the low-temperature temperature performance detection of existing building waterproof membranes.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for rapid detection of waterproof coiled materials, comprising the following steps: S1, sample preparation, cutting the waterproof coiled materials into test pieces of standard size and fixing them to a feeding module; S2, start the feeding module to transfer the specimen to the freezing module; S3. In the freezing module, the test environment is quickly cooled to the set target temperature through semiconductor refrigeration technology, and the temperature is maintained stable; S4. After the freezing is completed, the specimen is transferred to the bending test module; S5. Performing a bending flexibility test on the test piece in a bending test module, and detecting whether cracks appear on the surface of the test piece by a camera device; S6. Automatically record test data and generate test reports.

[0006] Preferably, the freezing module is based on the principle of semiconductor refrigeration, and drives the semiconductor thermoelectric cooling element through electric current, so that the cold end absorbs heat and releases the heat to the hot end, thereby quickly cooling the test environment.

[0007] Preferably, the freezing module can control the temperature of the test environment between -25°C and -40°C, and the temperature control accuracy is ±0.1°C.

[0008] Preferably, the freezing module uses a proportional-integral-differential control algorithm to adjust the cooling speed in real time so that the temperature change rate is less than 0.1 degrees Celsius per second and ensures that the fluctuation amplitude of the test temperature is less than 0.05 degrees Celsius.

[0009] Preferably, the bending test module performs a bending test on the specimen by applying a bending moment, wherein the applied bending moment is determined according to the thickness of the specimen.

[0010] Preferably, the crack detection step can observe the specimen surface in real time through the naked eye and a high-definition camera device. After the camera collects data, it can calculate whether the crack exists and its shape after existence through edge detection technology in image analysis, and determine whether it meets the predetermined qualification standards.

[0011] Preferably, the detection data includes a detection result of whether cracks exist, a crack morphology image and a corresponding freezing temperature.

[0012] Preferably, the feeding module comprises a limiting device and a horizontal conveying mechanism, the limiting device is used to fix the specimen and the horizontal conveying mechanism is used to accurately convey the specimen between the freezing module and the bending module.

[0013] A waterproof coiled material rapid detection device, comprising: The casing is used as a shell that wraps the entire device structure and protects the internal structure; A discharge button is arranged on the front side of the housing and is used to control the discharge of the equipment; A control panel, which is arranged on the top of the casing and is used to adjust the equipment parameters; An observation port is provided on the top of the casing to allow the staff to observe the state of the coil during testing; A power socket, which is arranged on the front side of the housing and located at the bottom of the discharge button, and is used to connect to a power source; The discharge port is located at the front side of the casing and is used to discharge the coiled material after inspection; The discharge port is located at the top of the casing and is used to allow the coil to be inspected to enter; A bending cooling module is arranged inside the housing and is used to cool the bending parts; A freezing module, which is arranged on one side of the bending and cooling module, and is used to cool the coil; A water cooling mechanism, which is arranged at the bottom of the bending cooling module and is used to cool the equipment; A feeding module, which is arranged on a side of the freezing module away from the bending and cooling module, and is used to feed the coiled material; A manual discharge port is provided inside the housing and located on one side of the feeding module, and is used to cooperate with the feeding module to feed the coil; The bending cooling module includes a radiator fixing block 1, a radiator 4040 is embedded in the radiator fixing block 1, a ceramic refrigeration block 1 is attached to the bottom of the radiator 4040, a thermal conduction block 1 is attached to the bottom of the ceramic refrigeration block 1, and a bending pressing block is attached to the bottom of the thermal conduction block 1; The freezing module includes a temperature conduction block fixing plate, a temperature conduction block 2 is embedded at the bottom of the temperature conduction block fixing plate, a ceramic refrigeration block 2 which is symmetrical front and back is installed at the bottom of the temperature conduction block 2, a refrigeration block limiting plate is provided at the bottom of the ceramic refrigeration block 2, a radiator fixing block 2 is provided at the bottom of the refrigeration block limiting plate, a 40120 radiator is embedded inside the radiator fixing block 2, and the ceramic refrigeration block 2 is installed on the top of the radiator fixing block 2 through the refrigeration block limiting plate.

[0014] The present invention provides a method and device for rapid detection of waterproof coiled materials, which has the following beneficial effects: 1. The present invention uses a quick freezing module based on semiconductor refrigeration to reduce the test environment temperature to -25°C or even -40°C in a short time, and ensures minimal temperature fluctuations and maintains a stable low-temperature environment through a precise temperature control system. Compared with the detection method in the prior art that relies on compressor refrigeration and has a slow cooling process, the present invention solves the problems of long laboratory detection time and low efficiency, greatly improves the detection efficiency, and meets the needs of random inspections at the construction site at any time.

[0015] 2. The present invention integrates an integrated feeding module, and realizes efficient flow of the entire detection process through automatic placement, limiting, horizontal transmission and resetting operations of the specimens. The freezing link ensures the stable transition of the specimens between different modules through the ingenious design of mechanical jacking and gravity return. Compared with the manual operation or complex multi-device collaboration detection method in the prior art, the present invention greatly reduces manual intervention, improves the convenience and continuity of operation, and optimizes the entire detection process.

[0016] 3. The present invention combines a bending cooling module with a low-temperature environment and visual monitoring means to observe the surface cracks of the test piece in real time during the physical bending process and simultaneously record the crack image. Compared with the detection method in the prior art that relies on a single parameter test and lacks intuitive observation, the present invention solves the problems of incomplete detection information and insufficient data traceability, and provides a multi-dimensional detection basis for the performance evaluation of the coil.

[0017] 4. The present invention adopts a highly automated operating process. Through the automated design of the entire process of sampling, freezing, bending, and data recording, the test can be completed with only a small amount of manual intervention. Compared with the detection methods in the prior art that rely on cumbersome manual steps, the present invention solves the shortcomings of cumbersome operation and low efficiency, significantly improves the detection efficiency and accuracy, and at the same time adapts to the needs of on-site detection, with higher practicality and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a flow chart of the method steps of the present invention; Figure 2 A three-dimensional diagram of the device of the present invention; Figure 3 The internal structure distribution diagram of the casing of the present invention; Figure 4 It is a schematic diagram of a freezing module of the present invention; Figure 5 An exploded view of a freezing module of the present invention; Figure 6 It is a schematic diagram of the bending cooling module of the present invention.

[0019] Among them, 1. casing; 2. discharge button; 3. control panel; 4. observation port; 5. power socket; 6. discharge port; 7. discharge port; 8. bending cooling module; 9. freezing module; 10. water cooling mechanism; 11. feeding module; 12. manual discharge port; 801. radiator fixing block one; 802. 4040 radiator one; 803. ceramic refrigeration block one; 804. temperature conduction block one; 805. bending pressure block; 901. temperature conduction block fixing plate; 902. 40120 radiator; 903. temperature conduction block two; 904. ceramic refrigeration block two; 905. refrigeration block limit plate; 906. radiator fixing block two. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Please see attached Figure 1 The embodiment of the present invention provides a method for rapid detection of waterproof coiled materials, comprising the following steps: S1. Sample preparation: cutting the waterproof membrane into specimens of standard size and fixing them on the feeding module; S2, start the feeding module to transfer the specimen to the freezing module; S3. In the freezing module, the test environment is quickly cooled to the set target temperature through semiconductor refrigeration technology, and the temperature is maintained stable; S4. After the freezing is completed, the specimen is transferred to the bending test module; S5. Performing a bending flexibility test on the test piece in a bending test module, and detecting whether cracks appear on the surface of the test piece by a camera device; S6, automatically record test data and generate test reports; The freezing module is based on the principle of semiconductor refrigeration. It drives the semiconductor thermoelectric cooling element through electric current, so that the cold end absorbs heat and releases the heat to the hot end, thereby quickly cooling the test environment. The freezing module can control the temperature of the test environment between -25℃ and -40℃, and the temperature control accuracy is ±0.1℃. The freezing module uses a proportional-integral-differential control algorithm to adjust the cooling speed in real time to make the temperature change rate less than 0.1℃ / S and ensure that the fluctuation range of the test temperature is less than 0.05℃; The bending test module performs bending tests on the specimen by applying bending moment, wherein the applied bending moment is determined according to the thickness of the specimen; the crack detection step can observe the surface of the specimen in real time through the naked eye and a high-definition camera device. After the camera collects data, it can calculate whether there is a crack and its shape after it exists through edge detection technology in image analysis, and judge whether it meets the predetermined qualification standards; Detection data: detection results of crack presence or absence, crack morphology image and corresponding freezing temperature; The feeding module includes a limiting device and a horizontal conveying mechanism. The test piece is fixed by the limiting device and the test piece is accurately conveyed between the freezing module and the bending module by the horizontal conveying mechanism.

[0022] Specifically, step S1 sample preparation is a basic link that directly affects the accuracy and reliability of subsequent detection steps. In order to ensure the compatibility of the sample with the test equipment, the size, shape and placement of the test piece must strictly comply with the predetermined standards. In general, the selection of samples should be representative, with the basic requirement being that they can reflect the actual status of the indicating equipment in the power production site. By accurately processing the cutting, fixing and transmission position of the test piece, a stable and standardized initial condition can be provided for subsequent data acquisition, status analysis and alarm indication.

[0023] First, representative samples are collected from target equipment in power production sites, such as switchgear and transformers. Samples are usually key data records generated during the operation of the equipment, including vibration signals, temperature changes, current and voltage fluctuations, etc. As an option, the duration and frequency of the sampled data should conform to the specific cycle of the equipment operation. For example, in the detection of some high-voltage equipment, a high-frequency sampling of 10,000 times per second can be selected to capture short-term changes in the operating status.

[0024] Specifically, the sample trimming is mainly aimed at the normative processing of data timing. In one possible implementation, the data of the continuously running device is divided into several segments of fixed length. Each segment of data should cover the typical operating state of the device, such as startup, stable operation, and possible transient fluctuations. As an optional design, the sample can be segmented by adaptive window technology so that its length can be flexibly adjusted according to the dynamic characteristics of the device, thereby ensuring data integrity.

[0025] During the sample fixation process, the specimen must be firmly mounted in a manner suitable for the testing equipment to avoid movement or deviation during subsequent transmission. Generally, the sample fixation can be completed by mechanical clamps, magnetic fixation or other forms of limit devices. In some embodiments, in order to further improve the fixation effect, the coupling error between the vibration sensor and the device surface can also be reduced by adding a buffer gasket.

[0026] After the sample is fixed, the specimen needs to be transferred to the initial position of the feeding module so that it can enter the subsequent testing process. In one possible implementation, the specimen is transferred through an automatic guide rail system, which can automatically adjust the transfer path according to the shape and size of the equipment to ensure that the specimen is always in the best position.

[0027] In terms of connection with subsequent steps, the size, shape and fixing method of the sample must match the interface design of the subsequent freezing module. For example, during the test, certain specific vibration signals may require the vibration surface of the specimen to maintain a strict vertical or parallel relationship with the freezing module sensor. Therefore, during the sample preparation stage, the position of the specimen must be accurately adjusted in advance through the calibration tool to ensure that it meets the specific requirements of the subsequent test.

[0028] In the S2 step, the specimen transfer link is an important step connecting sample preparation and subsequent freezing treatment. The specimen needs to be accurately transferred from the fixed position of the sample to the predetermined position of the freezing module to ensure that it can enter the low-temperature environment for processing. In general, the specimen needs to remain stable during the transfer process to avoid inaccurate subsequent tests due to vibration or position displacement. At the same time, in order to adapt to the sample types of different equipment, the transfer device needs to have a certain degree of flexibility and adjustment capabilities. Through efficient transmission design, the continuity and stability of the detection process can be maximized, providing reliable initial conditions for subsequent tests.

[0029] In this embodiment, the specimen transmission is mainly realized by the feeding module, which includes components such as a horizontal transmission mechanism, a limit device, and a lifting mechanism, and each component works together to complete the accurate transmission of the specimen.

[0030] In some embodiments, the horizontal transport mechanism uses a motor-driven guide rail system. The system can provide high-precision linear motion, and the transmission error can be controlled within ±0.1 mm. As an option, the guide rail material can use a high-strength alloy with a low friction coefficient, which not only reduces energy consumption but also extends the service life of the equipment. Specifically, the transmission speed can be adjusted according to the weight and size of the specimen and the processing time of the subsequent freezing module. For example, in the transmission of some heavier equipment samples, the transmission speed can be reduced to 50 mm per second to reduce the influence of inertial force.

[0031] In order to ensure that the specimen remains stable during the transmission process, the feed module is generally equipped with a limit device. The limit device can dynamically fix the specimen through an elastic clamp to prevent it from shaking or falling off during movement. As a possible implementation method, a flexible material gasket can be added to the inner surface of the clamp to protect the specimen surface from damage and enhance the clamping effect. Specifically, for some thinner specimens, the clamping pressure of the limit device can be optimized by adjusting the elastic mechanism to ensure that the specimen neither slides nor deforms due to excessive pressure.

[0032] In this embodiment, in order to achieve accurate docking between the specimen and the freezing module, a lifting mechanism is further designed in the feeding module. The lifting mechanism lifts the upper structure of the freezing module through mechanical drive, so that the specimen can smoothly enter the freezing environment. After the specimen is docked, the upper structure returns to its original position under the action of gravity, forming a stable clamp for the specimen. In a possible design, the lifting height of the lifting mechanism is controlled by a motor, and its accuracy can reach ±0.05 mm, thereby ensuring that the specimen can be accurately positioned in the core area of ​​the freezing module.

[0033] As an extended design, some embodiments also introduce a test piece position detection function. Through artificial visual inspection, the position deviation of the test piece during the transmission process is monitored. If the deviation exceeds the preset range, the system will automatically stop the transmission and make corrections by adjusting the guide rail position or re-clamping the test piece. This design can further improve the reliability of the transmission process.

[0034] In order to adapt to specimens of different thicknesses, an adjustable conveying path is also designed in some embodiments. In this case, the height of the guide rail of the horizontal conveying mechanism can be dynamically adjusted according to the specimen size to achieve stable transmission. The control of environmental interference is also a key link in the specimen transmission process. As an option, a protective cover can be installed on the conveying path of the feed module to isolate interference factors such as dust or vibration in the external environment. At the same time, the inner surface of the protective cover is a polished smooth surface that cannot accumulate dust to reduce the impact of dust deposition on the operation of the equipment.

[0035] In the process of specimen transmission and connection with the freezing module, the transmission time and path are parameters that need to be strictly controlled. Generally, the time for the specimen to be transmitted from the feeding module to the freezing module shall not exceed 5 seconds to reduce the impact of environmental factors on the initial state of the specimen. As a possible design solution, the feeding module can monitor the motion state during the transmission process through an acceleration sensor. When the specimen is about to reach the freezing module, the transmission mechanism will slowly decelerate to avoid displacement or collision of the specimen due to inertia.

[0036] In step S3, after the specimen is transferred and accurately positioned, it needs to be quickly frozen to the set low temperature range to provide a stable low temperature environment for subsequent state detection and performance evaluation. The freezing process is one of the core links of the entire method, and its quality directly affects the accuracy of the final test. In general, the freezing module must have rapid cooling capabilities, a high-precision temperature control system, and long-term temperature stability. As an option, thermal interference and temperature gradient issues during the freezing process also need to be considered to ensure uniform temperature in all parts of the specimen.

[0037] In this embodiment, the freezing module adopts a rapid cooling technology based on semiconductor refrigeration, and controls the flow of current in the semiconductor thermoelectric element to quickly transfer heat from the cold end where the test piece is located to the hot end, thereby achieving a cooling function.

[0038] In some embodiments, the operation of the semiconductor refrigeration module is described by the following formula: in: Q: Heat absorbed by the cold end.

[0039] α: Seebeck coefficient.

[0040] I: current.

[0041] T: absolute temperature of the cold end.

[0042] R is the resistance of the thermoelectric element.

[0043] ΔT: The temperature difference between the cold end and the hot end.

[0044] Generally, the refrigeration module adjusts the heat transfer rate by real-time control of the current size and direction to achieve the desired cooling effect. Specifically, the PID (proportional-integral-differential) control algorithm can be used to optimize the refrigeration process to achieve the best balance between cooling speed and temperature control accuracy. The specific operations are as follows: Proportional control (P): According to the difference between the target temperature and the current temperature (called error), the current is adjusted to quickly approach the target temperature. For example, if the current temperature is much higher than the target temperature, the current will increase, allowing the cold end to cool down quickly.

[0045] Integral control (I): accumulates error values ​​to compensate for deviations caused by system inertia during cooling. For example, when approaching the target temperature, if the temperature drops more slowly, the integral part will increase the current to accurately reach the target temperature.

[0046] Derivative control (D): Adjusts the current based on how fast the temperature changes to prevent temperature fluctuations. For example, when the temperature approaches the target value quickly, the derivative part will reduce the current to prevent the temperature from overshooting (falling too low).

[0047] In one possible implementation, the freezing module can quickly reduce the ambient temperature (25°C) to the set target temperature (such as -25°C or -40°C). By monitoring the temperature in the freezing chamber through a real-time temperature control sensor, the module can automatically adjust the cooling power to ensure that the temperature change rate does not exceed 0.1°C / second, while controlling the temperature fluctuation within ±0.05°C. The temperature control sensor can be a thermocouple, thermistor or infrared temperature probe, and the specific choice depends on the target temperature range and accuracy requirements.

[0048] In order to prevent the specimen from having uneven temperature due to heat conduction or radiation during the freezing process, this embodiment also designs an isothermal plate in the freezing chamber. The isothermal plate is made of a high thermal conductivity material (such as copper or aluminum), and its surface is specially treated to enhance the uniformity of heat distribution. In some embodiments, the thickness of the isothermal plate is between 5 and 10 mm, and the specific selection depends on the size and heat capacity of the specimen.

[0049] During the freezing process of the specimen, environmental interference is a factor that needs to be focused on. For example, the flow of outside air may cause heat convection, thereby destroying the low-temperature environment in the freezing chamber. As an option, this embodiment designs a multi-layer insulation barrier outside the freezing module, which is made of vacuum insulation panels or polyurethane foam materials, has excellent insulation performance and is light in weight. In addition, the outer surface of the insulation barrier can be coated with a reflective coating to further reduce the impact of radiant heat.

[0050] In the freezing module, after the specimen is cooled, the low temperature environment needs to be maintained for a period of time to allow the specimen to fully adapt to the target temperature. Specifically, the freezing time is generally set to 15 minutes, and the specific duration is determined according to the thermal inertia and thermal conductivity of the specimen material. In some embodiments, in order to detect the adequacy of the freezing time, multiple temperature sensors can be arranged on the surface of the specimen to monitor the temperature consistency of each part of the specimen to determine whether the cooling process is completed.

[0051] In order to adapt to different application scenarios and detection requirements, this embodiment also provides an adjustable freezing parameter setting function. The user can independently set the freezing temperature, cooling rate and constant temperature time according to the material type of the specimen and the target detection standard. For example, for some polymer materials, their low-temperature performance test may require the ambient temperature to be lowered to below -40°C. At this time, a larger temperature difference can be achieved by adjusting the current intensity and power-on time of the freezing module.

[0052] In the connection with the subsequent modules, the specimens after freezing need to be automatically transferred to the bending test module. In a possible design, the freezing module is equipped with a discharge device with a slide rail, which can smoothly move the specimen out of the freezing chamber while avoiding the accumulation of condensed water caused by temperature differences. In order to ensure smooth connection, the surface of the slide rail can be coated with polytetrafluoroethylene to reduce friction and temperature loss.

[0053] In step S4, after the freezing treatment of the specimen is completed, it needs to be transferred to the bending test module for flexibility testing in a low-temperature environment. The main purpose of this step is to evaluate the physical properties of the specimen under low-temperature conditions by applying a bending moment to the specimen, and to determine whether it meets the relevant performance requirements. In general, the bending test should be able to truly reflect the stress conditions of the specimen in actual use, so the loading method, bending radius, and temperature control during the bending process all need to be precisely designed. As an option, a camera or other sensor can be used to monitor surface cracks or other abnormal changes in the test piece during the bending process to ensure the intuitiveness and accuracy of the test.

[0054] In this embodiment, the bending test module applies a bending moment to the specimen through a mechanical loading device, and records the performance of the specimen during the bending process in combination with a camera device.

[0055] Specifically, the specimen is automatically transferred from the freezing module to the bending test module, and a low-temperature protection device is used during the transfer to prevent the temperature of the specimen from rising.

[0056] The key parameters of the bending test include the thickness of the specimen and the bending radius R. According to national standards, the bending radius R can be selected as 20mm, 30mm or 50mm according to the performance requirements of different products. During the bending process, the deformation characteristics of the specimen depend on the relationship between the thickness and the bending radius, and this is used to evaluate the flexibility of the specimen under low temperature conditions.

[0057] Bending radius The setting of R needs to match the thickness t of the specimen. According to the thickness of the specimen, the distance between the two cylinders is adjusted to make the distance "bending axis diameter + 2mm + 2 times the specimen thickness". After the specimen is installed on the test device, its two ends need to be fixed so that the upper end of the cylinder is about 10mm below the freezing liquid surface to ensure that the test environment meets the national standard requirements.

[0058] On this basis, the crack, fracture or other deformation characteristics of the specimen can be directly judged by the bending radius and the actual performance of the specimen without further calculating the bending moment or stress value.

[0059] In some embodiments, the bending test module uses an electric lifting mechanism to apply the load, and the loading rate can be adjusted according to the actual test requirements. Specifically, the loading rate is usually controlled within the range of 1-2 mm per second to ensure a smooth bending process and uniform force distribution of the specimen. As an extended design, the mechanism can also monitor the magnitude of the loading force in real time through a closed-loop control algorithm and adjust the output power of the loading motor to achieve higher loading accuracy.

[0060] In some embodiments, in order to further monitor whether cracks appear on the test piece during the bending process, the bending test module is equipped with a high-definition camera. The camera is installed above the bending device and can capture the changes on the surface of the test piece in real time. In a possible implementation, the camera can be combined with an edge detection algorithm to identify cracks on the surface of the test piece and automatically calculate the crack length L. c and width W c When a crack is detected, the system will record the location and size of the crack and determine whether the specimen is qualified based on the following data: L c ≤L max ,W c ≤W max in: L c : Detected crack length; W c : Detected crack width; L max , Wmax : The maximum allowable crack length and width are specified by the test standard.

[0061] Step S5 is not only the organization and output of the data obtained in the previous steps, but also an important part of evaluating the equipment status. In general, data recording and result output should ensure the integrity, accuracy and traceability of the data. As an option, multi-dimensional data visualization technology can also be combined to provide support for subsequent equipment performance analysis or fault diagnosis. By recording data and generating test reports, a basis can be provided for equipment maintenance and quality management.

[0062] After the specimen completes the bending test, the specimen's mechanical response data, crack detection data, and other related information will be summarized through a multi-channel data acquisition module. Generally, the data acquisition module uses a high-speed sampling interface (such as an analog-to-digital converter ADC), and its sampling frequency can be adjusted according to the test requirements. For example, for some dynamic tests that require high time resolution, the sampling frequency can be set to 10kHz per second to capture the detailed changes in the bending process.

[0063] Specifically, the recorded data mainly includes the following categories: Mechanical data: such as applied bending moment, bending stress and bending strain. These data can be transmitted in real time by the bending loading module and calculated and stored according to the following formula.

[0064] Crack detection data: including crack length, width, location, crack growth trend, etc. As an extended design, the system can record multiple frames of crack images and extract crack features using edge detection algorithms.

[0065] Temperature data: Specimen surface and ambient temperature information during freezing and bending tests to verify that the specimen remains within the target temperature range.

[0066] In order to ensure the reliability of data, a multi-level redundant recording mechanism is adopted in this embodiment. In some embodiments, mechanical data and temperature data are synchronously collected through independent sensor networks and stored in dual-channel storage devices. When a sensor device of a recording channel fails, the system can automatically switch to a backup channel to avoid data loss.

[0067] In one possible implementation, the system organizes the above recorded data into a standardized test report. The test report includes test parameters, measurement data, crack images, and comprehensive evaluation results of the equipment status. Specifically: The test parameters section lists the settings for freezing temperature, bending radius, loading rate, etc.; The measured data section shows the mechanical response and crack characteristics of the specimen; The crack image part includes multiple frames of high-definition images and automatically annotated crack size information; The comprehensive evaluation part compares the measured data with the predetermined performance standards and outputs a qualification judgment of the equipment status.

[0068] As an option, the test report can be output in electronic format and uploaded to a remote server via a wireless communication module. In some embodiments, in order to facilitate quick viewing by on-site personnel, the system is also equipped with a built-in printing module that can directly generate a paper report.

[0069] In terms of data visualization, this embodiment displays real-time data and analysis results through a graphical interface. For example, mechanical data can be plotted as a stress-strain curve, and crack detection data can be displayed as a three-dimensional thermal map of crack propagation. As an extended design, these visualization results can be embedded in the test report for subsequent analysis.

[0070] After the data recording is completed, the system will remove the specimen from the bending test module and automatically trigger the reset program to prepare for the next test. In order to prevent the specimen from secondary damage during the removal process, the system is designed with low-friction slide rails and flexible fixtures to ensure the integrity of the specimen during the transmission process.

[0071] In step S6, after the test piece is tested, it will be removed from the bending test module through an automatic transmission device. Generally, the specimen is removed by a low-friction slide rail in combination with a flexible fixture to avoid damage to the specimen surface due to physical contact. In one possible implementation, the slide rail material is made of polytetrafluoroethylene (PTFE) or a similar low-friction material, and its surface is specially treated to reduce friction. The flexible fixture is designed with a buffer layer to provide stable support for the specimen, while effectively avoiding deformation caused by excessive clamping force.

[0072] As an extended design, the specimen can be marked during the resetting process. For example, the system can add information such as the test number and test date to the surface of the specimen through non-destructive marking. This function can facilitate subsequent specimen management and result traceability, and is particularly suitable for scenarios where specimens need to be stored for a long time or for batch testing.

[0073] After the specimen is removed, the system will reset the key components of the detection module. Specifically: Bending module reset: The electric loading mechanism and the camera device will return to the initial position to ensure that the next test can start from the predetermined starting point. In some embodiments, the reset position of the bending module is accurately calibrated by a limit switch or a photoelectric sensor, and the positioning error can be controlled within ±0.1 mm.

[0074] Reset the freezing module: The temperature of the inner cavity of the freezing module will gradually return to the ambient temperature to avoid increased energy consumption or equipment loss due to long-term low temperature. Specifically, the temperature in the freezing cavity can be restored by heating elements, and the heating rate is usually set at 2°C per minute to ensure a smooth temperature change process.

[0075] Data acquisition and storage module reset: Temporary data in the storage device will be cleared, and key test data will be automatically archived to the system database to free up storage space and ensure data security.

[0076] In a possible implementation, the reset process also includes state detection and calibration of the sensor. Generally, the calibration frequency of the sensor can be adjusted according to its performance and test intensity. For example, the calibration of force sensors and temperature sensors is usually arranged after each round of testing to ensure that the next test can meet the same accuracy requirements.

[0077] In order to improve the reset efficiency of the system, this embodiment introduces an automatic control strategy. By coordinating the reset process of each module through the embedded controller, multi-task parallel operation can be achieved. For example, while the specimen is removed and the bending module is reset, the heating of the freezing module and the sensor calibration can also be carried out simultaneously. This parallel strategy can significantly shorten the reset time and enable the system to enter the next round of detection state faster.

[0078] After the reset is completed, the system will initialize the operating parameters to ensure that the settings for the next round of tests can fully meet the predetermined requirements. Specifically: Initialization of test parameters: including target temperature of the freezing module, bending loading rate, and frequency of data acquisition, etc. These parameters are usually set by the user before the test begins and are automatically saved as a template after each round of testing.

[0079] Environmental monitoring initialization: The system will detect whether the current environmental conditions meet the detection requirements through built-in environmental sensors (such as humidity sensors, temperature sensors, etc.). For example, in the case of a freezing test that requires strict low humidity conditions, the system will automatically activate the dehumidification device and adjust the environmental humidity in real time.

[0080] In some embodiments, in order to further improve the stability of the reset process, the system is also designed with an abnormality monitoring and recovery function. If it is detected during the reset process that a certain component of the equipment fails to return to the initial state normally, the system will pause the reset process and prompt the user to intervene manually through an alarm. For example, when the photoelectric sensor does not detect that the loading arm of the bending module returns to the initial position, the system will stop the next operation and prompt the operator to check the movement path of the loading arm.

[0081] After the reset is completed, the system will automatically prompt the user that the next round of testing is ready. The user can choose to start a new test according to actual needs, or further analyze and process the current test results. In order to enhance the flexibility of the system, this embodiment also supports starting the next round of testing through remote control devices, which is of great significance for large-scale device management scenarios.

[0082] Embodiment 2: Please see attached Figure 2 -Attached Figure 6 , a waterproof coiled material rapid detection device, comprising: The housing 1 is used as a shell to wrap the entire device structure and protect the internal structure; A discharge button 2, which is arranged on the front side of the housing 1 and is used to control the discharge of the device; A control panel 3, which is arranged on the top of the housing 1 and is used to adjust device parameters; An observation port 4 is provided on the top of the housing 1 and is used for the staff to observe the state of the coil during the inspection; A power socket 5, which is arranged on the front side of the housing 1 and located at the bottom of the discharge button 2, and is used to connect to a power source; A discharge port 6 is provided at the front side of the housing 1 and is used for discharging the coiled material after inspection; A discharge port 7 is provided at the top of the housing 1 for allowing the coil to be inspected to enter; A bending cooling module 8, which is arranged inside the housing 1 and is used to cool the bending component; A freezing module 9, which is arranged on one side of the bending and cooling module 8, and is used to cool the coil; A water cooling mechanism 10, which is arranged at the bottom of the bending cooling module 8 and is used to cool the equipment; A feeding module 11, which is arranged on the side of the freezing module 9 away from the bending and cooling module 8, and is used to feed the coiled material; A manual discharge port 12 is provided inside the housing 1 and is located on one side of the feeding module 11, and is used to cooperate with the feeding module 11 to feed the coiled material; The bending cooling module 8 includes a radiator fixing block 801, a radiator 4040 802 is embedded in the radiator fixing block 801, a ceramic refrigeration block 803 is attached to the bottom of the radiator 4040 802, a temperature conducting block 804 is attached to the bottom of the ceramic refrigeration block 803, and a bending pressing block 805 is attached to the bottom of the temperature conducting block 804; The freezing module 9 includes a temperature conducting block fixing plate 901, a temperature conducting block 903 is embedded at the bottom of the temperature conducting block fixing plate 901, a ceramic refrigeration block 904 is installed at the bottom of the temperature conducting block 903, a refrigeration block limiting plate 905 is arranged at the bottom of the ceramic refrigeration block 904, a radiator fixing block 906 is arranged at the bottom of the refrigeration block limiting plate 905, a 40120 radiator 902 is embedded inside the radiator fixing block 906, and the ceramic refrigeration block 904 is installed on the top of the radiator fixing block 906 through the refrigeration block limiting plate 905.

[0083] Specifically, the coil to be tested is fed into the device through the position of the discharge port 7. After being fed into the device, the coil falls to the position of the feed module 11 for limiting, and then is pushed to the position of the freezing module 9 by the driving device at the bottom of the feed module 11, such as an electric push rod or a cylinder, etc. At this time, the freezing module 9 will be separated from the position of the feed module 11 and enter the freezing module 9 for freezing operation. The freezing module 9 is based on the semiconductor refrigeration principle at this time. The freezing module 9 is closely matched with the heat conducting block fixing plate 901 and the heat conducting block 2 903, so that the coil closely fits with them, and the rapid freezing and uniform temperature distribution of the coil are efficiently achieved based on the semiconductor refrigeration principle. After the semiconductor refrigeration sheet inside is energized, the cold end absorbs heat and is quickly transferred to the heat conducting block 2 903 through the heat conducting block fixing plate 901, ensuring that the cold is concentrated and evenly distributed on the surface of the coil. The heat conducting block 2 903 is made of high thermal conductivity material, combined with its temperature uniformity structure design, to further reduce the temperature gradient of the cold end area, so that each part of the specimen maintains a consistent freezing effect. The heat transfer block fixing plate 901 firmly supports the entire module structure through its high thermal conductivity and stability, and ensures that the heat loss is minimal during the process of transferring from the cold end to the heat transfer block 2 903.

[0084] At this time, the state of the coil can be actually observed through the observation port 4. After it is determined that it is frozen, it is pushed to the position of the bending cooling module 8 for bending, so as to measure its performance in the freezing environment. After the coil is sent to the position of the bending cooling module 8, the bending cooling module 8 at this time will be squeezed by the bending pressure block 805 and restricted by the two temperature conducting blocks 804 to achieve the bending effect. The bending position can be checked through the observation port 4, and the camera can be used to observe whether there are cracks in the bending of the coil. At the same time, during the bending process, the ceramic refrigeration block 803 is used as the core refrigeration element. After power is turned on, the Peltier effect is used to quickly reduce the cold end temperature. The heat absorbed by the cold end is quickly dissipated to the outside world through the 4040 cold row 802 connected to its hot end, ensuring the continuous cooling of the cold end of the refrigeration block. The low temperature generated by the cold end is evenly transferred to the surface of the specimen through the temperature conducting block 804 with excellent thermal conductivity, and combined with its internal temperature uniformity design to eliminate local temperature differences, ensuring the low temperature uniformity of the entire stress area of ​​the specimen.

[0085] After the test is completed, the bending block 805 and the temperature conducting block 804 no longer clamp the coil. At this time, we can press the discharge button 2 to push the coil out from the discharge port 6.

[0086] Working principle: After the coil is fed into the equipment from the discharge port 7, it is guided to the position of the feed module 11 for positioning and fixing. Subsequently, the driving device at the bottom of the feed module 11, such as an electric push rod or a cylinder, starts to push the coil and move it to the working area of ​​the freezing module 9. At this time, the freezing module 9 is separated from the feed module 11, and the coil enters the interior of the freezing module 9 and starts the freezing process. The freezing module 9 operates based on the principle of semiconductor refrigeration. After the semiconductor refrigeration plate inside it is started, the cold end quickly absorbs and transfers heat to the second temperature block 903 through the temperature conduction block fixing plate 901, ensuring that the cold is concentratedly transferred to the surface of the coil. The second temperature conduction block 903 is constructed of high thermal conductivity materials and has a uniform temperature design, so that the freezing temperature is evenly distributed, and each area of ​​the specimen maintains a consistent freezing environment. During the freezing process, the real-time state of the coil can be observed through the observation port 4. After the freezing is completed, the coil is pushed to the bending cooling module 8. In the bending cooling module 8, the bending pressure block 805 clamps and applies a bending force to the coil. The interior of the bending cooling module 8 works based on the Peltier effect through a ceramic refrigeration block 803 to reduce the cold end to a low temperature, and the heat at the hot end is quickly dissipated by a 4040 cold row 802 to maintain low-temperature operation. The cold end evenly transfers the low temperature to the surface of the coil through a temperature conducting block 804. Combined with its temperature uniformity design, it ensures that the freezing effect of the bending area is consistent. During the bending process, the camera in the bending cooling module 8 observes the bending state of the coil in real time and records whether cracks or other material abnormalities occur. After the bending is completed, the bending pressure block 805 and the temperature conducting block 804 release the coil. Finally, by pressing the discharge button 2, the coil is pushed out of the equipment from the discharge port 6, completing the entire detection process.

[0087] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid detection method for waterproof coiled materials, characterized in that: The following steps are involved: S1. Sample preparation: cutting the waterproof membrane into specimens of standard size and fixing them on the feeding module; S2, start the feeding module to transfer the specimen to the freezing module; S3. In the freezing module, the test environment is quickly cooled to the set target temperature through semiconductor refrigeration technology, and the temperature is maintained stable; S4. After the freezing is completed, the specimen is transferred to the bending test module; S5. Performing a bending flexibility test on the test piece in a bending test module, and detecting whether cracks appear on the surface of the test piece by a camera device; S6. Automatically record test data and generate test reports.

2. A rapid detection method for waterproof coiled material according to claim 1, characterized in that: The freezing module is based on the principle of semiconductor refrigeration. It drives the semiconductor thermoelectric cooling element through electric current, so that the cold end absorbs heat and releases the heat to the hot end, thereby quickly cooling the test environment.

3. A rapid detection method for waterproof coiled material according to claim 1, characterized in that: The freezing module can control the temperature of the test environment between -25°C and -40°C, and the temperature control accuracy is ±0.1°C.

4. A rapid detection method for waterproof coiled material according to claim 1, characterized in that: The freezing module uses a proportional-integral-differential control algorithm to adjust the cooling speed in real time to make the temperature change rate less than 0.1 degrees Celsius per second and ensure that the fluctuation range of the test temperature is less than 0.05 degrees Celsius.

5. A rapid detection method for waterproof coiled material according to claim 1, characterized in that: The bending test module performs a bending test on the specimen by applying a bending moment, wherein the applied bending moment is determined according to the thickness of the specimen.

6. A waterproof coiled material rapid detection method according to claim 1, characterized in that: The crack detection step can observe the surface of the test piece in real time through the naked eye and a high-definition camera device. After the camera collects data, it can calculate whether the crack exists and its shape after existence through edge detection technology in image analysis, and determine whether it meets the predetermined qualification standards.

7. A rapid detection method for waterproof coiled material according to claim 1, characterized in that: The detection data includes the detection result of whether cracks exist, the crack morphology image and the corresponding freezing temperature.

8. A waterproof coiled material rapid detection method according to claim 1, characterized in that: The feeding module comprises a limiting device and a horizontal conveying mechanism. The limiting device is used to fix the specimen and the horizontal conveying mechanism is used to accurately convey the specimen between the freezing module and the bending module.

9. A rapid detection device for waterproof coiled materials, according to a rapid detection method for waterproof coiled materials according to any one of claims 1 to 8, characterized in that: include: A casing (1), which serves as an outer shell that wraps around the entire device structure and is used to protect the internal structure; A discharge button (2), which is arranged on the front side of the housing (1) and is used to control the discharge of the device; A control panel (3) disposed on the top of the housing (1) and used for adjusting device parameters; An observation port (4) is arranged on the top of the housing (1) and is used for a staff member to observe the state of the coil during inspection; A power socket (5), which is arranged on the front side of the housing (1) and located at the bottom of the discharge button (2), and is used for connecting to a power source; A discharge port (6) is provided on the front side of the housing (1) and is used for discharging the coiled material after inspection; A discharge port (7) is provided at the top of the housing (1) and is used for allowing the coil to be inspected to enter; A bending cooling module (8), which is arranged inside the housing (1) and is used to cool the bending component; A freezing module (9), which is arranged on one side of the bending and cooling module (8) and is used to cool the coiled material; A water cooling mechanism (10), which is arranged at the bottom of the bending cooling module (8) and is used to cool the equipment; A feeding module (11), which is arranged on a side of the freezing module (9) away from the bending and cooling module (8) and is used to feed the coiled material; A manual discharge port (12), which is disposed inside the housing (1) and located on one side of the feeding module (11), and is used to cooperate with the feeding module (11) to feed the coiled material; The bending cooling module (8) comprises a radiator fixing block 1 (801), a radiator 4040 (802) is embedded inside the radiator fixing block 1 (801), a ceramic refrigeration block 1 (803) is bonded to the bottom of the radiator 4040 (802), a thermal conduction block 1 (804) is bonded to the bottom of the ceramic refrigeration block 1 (803), and a bending pressing block (805) is bonded to the bottom of the thermal conduction block 1 (804); The freezing module (9) comprises a temperature conducting block fixing plate (901), a temperature conducting block 2 (903) is embedded at the bottom of the temperature conducting block fixing plate (901), a ceramic refrigeration block 2 (904) symmetrically arranged front and rear is installed at the bottom of the temperature conducting block 2 (903), a refrigeration block limiting plate (905) is arranged at the bottom of the ceramic refrigeration block 2 (904), a radiator fixing block 2 (906) is arranged at the bottom of the refrigeration block limiting plate (905), a 40120 radiator (902) is embedded inside the radiator fixing block 2 (906), and the ceramic refrigeration block 2 (904) is installed on the top of the radiator fixing block 2 (906) through the refrigeration block limiting plate (905).

Images