Sensing device for detecting sealing performance of rubber ring and using method of sensing device

Abstract

The invention discloses a sensing device for detecting the sealing performance of a rubber ring, which comprises a device body, the device body is composed of a cable take-up and pay-off machine provided with an electric capstan and a main control cabin, the main control cabin is arranged on a cable of the take-up and pay-off machine, and the device body is also provided with a sealing sensing structure; the sealing induction structure comprises an acoustic detection structure, a motion positioning structure, a data processing structure and a power supply structure. By means of the mode, the sensing device for detecting the sealing performance of the rubber ring and the using method of the sensing device have the advantages that a sealing performance sensing structure is adopted, the structure is compact, operation is safe, positioning is accurate, judgment is intelligent, the sealing performance of the rubber ring can be rapidly and accurately detected, and the defects existing in the prior art are overcome.

Description

Technical Field

[0001] This invention belongs to the field of municipal engineering testing technology, specifically relating to a sensing device for detecting the sealing performance of rubber rings and its usage method. Background Technology

[0002] Inspection wells are key nodes in urban underground drainage, water supply, power, and communication pipeline systems. Their pipe joints are usually sealed with rubber sealing rings. Over long-term use, these sealing rings are prone to deformation, damage, or displacement due to factors such as foundation settlement, temperature changes, material aging, and construction quality. This can lead to seal failure, causing groundwater infiltration or sewage leakage, resulting in secondary disasters such as water waste, environmental pollution, and road collapse.

[0003] Currently, the testing of the sealing performance of manhole rubber rings mainly relies on two methods: one is manual visual inspection, which is conducted by professionals who go down into the well to observe it at close range only when there is no water or the water level is extremely low. This method is inefficient, poses significant safety risks (such as lack of oxygen or poisoning), and cannot assess interfaces that are submerged in water or buried in the soil. The other method is water tightness test or air tightness test, which requires sealing and pressurizing the entire pipe section. This is complex, time-consuming, costly, and cannot accurately locate the leakage point of a single interface. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide a sensing device and its method for detecting the sealing performance of rubber rings, which can quickly and accurately detect the sealing performance of rubber rings.

[0005] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide a sensing device for detecting the sealing performance of rubber rings, including a device body, the device body being composed of a cable winding and unwinding machine equipped with an electric winch and a main control cabin, the main control cabin being installed on the cable of the winding and unwinding machine, and a sealing performance sensing structure being installed on the device body. The sealed sensing structure includes an acoustic detection structure, a motion positioning structure, a data processing structure, and a power supply structure; The acoustic detection structure includes an acoustic sensor array deployed on the side wall of the main control cabin for receiving acoustic wave signals from all directions, and a controllable sound source generator installed at the bottom of the main control cabin for emitting specific excitation sound waves. The motion positioning structure includes a depth encoder for measuring the descent depth, an electronic compass for measuring the azimuth angle, and an inclination sensor for measuring the horizontal attitude. The electronic compass and the inclination sensor are installed in the main control cabin, and the depth encoder is installed on the electric winch. The data processing structure is installed inside the main control cabin. The data processing structure includes an embedded microprocessor, which is electrically connected to the acoustic detection structure and the motion positioning structure. The embedded microprocessor has a built-in sealing performance evaluation model for evaluating the sealing status of the rubber ring based on the characteristics of the processed acoustic signal. The power supply structure is installed inside the main control cabin and is electrically connected to the acoustic detection structure, the motion positioning structure, the data processing structure, and the power supply structure.

[0006] In a preferred embodiment of the present invention, the controllable sound source generator is a low-frequency piezoelectric ceramic transducer with an operating frequency range of 50Hz to 5kHz.

[0007] In a preferred embodiment of the present invention, the acoustic sensor array is composed of multiple composite sensors evenly distributed in a ring, and each composite sensor integrates a broadband hydrophone and an air microphone.

[0008] In a preferred embodiment of the present invention, an environmental sensing structure is also installed on the main control cabin. The environmental sensing structure includes a water temperature sensor, a turbidity sensor, and a pressure sensor. The water temperature sensor, the turbidity sensor, and the pressure sensor are all electrically connected to the embedded microprocessor.

[0009] In a preferred embodiment of the present invention, the main control cabin is further provided with a ring-shaped LED lighting lamp and a 360° anti-fog camera, and the 360° anti-fog camera is electrically connected to the embedded microprocessor.

[0010] In a preferred embodiment of the present invention, the embedded microprocessor integrates a signal preprocessing unit, a voiceprint feature analysis algorithm library, and a wireless communication module, wherein the wireless communication module is signal-connected to an external control terminal and the depth encoder.

[0011] In a preferred embodiment of the present invention, the sealing performance evaluation model is a model trained based on a machine learning algorithm, the input of which is a multidimensional acoustic feature vector extracted by the acoustic feature analysis algorithm library, and the output is the sealing performance evaluation result of the rubber ring.

[0012] A method for using a sensing device for detecting the sealing performance of rubber rings, comprising the following steps: 1) Test preparation and lowering: Connect the main control cabin to the external control terminal via cable, then turn on the power to enable it to perform a self-test, and finally lower the main control cabin into the inspection well to be tested using the take-up and drop machine; 2) Full-well acoustic scanning and interface positioning: During the lowering process, the controllable sound source generator emits a sweep frequency excitation signal and the acoustic sensor array analyzes the echo to detect preparation and lowering: The main control cabin is connected to the external control terminal through a cable, then the power is turned on to enable it to perform a self-test, and finally the main control cabin is hoisted into the inspection well to be tested by the retractor. 3) Precise fixed-point detection: Based on the well structure map, the main control cabin is moved to the center depth position of each pipe interface, and the attitude is adjusted so that the acoustic sensor array is facing the interface. At each fixed point, the controllable sound source generator emits a set of optimized detection frequency signals, and the acoustic sensor array synchronously collects high signal-to-noise ratio response signals. 4) Signal processing and feature extraction: The signals collected at each interface are preprocessed by the signal preprocessing unit and the acoustic feature analysis algorithm library is run to extract the multi-dimensional acoustic feature vector at the interface that is strongly correlated with the sealing state of the rubber ring. 5) Intelligent evaluation and result output: The extracted multidimensional acoustic feature vector is input into the pre-trained sealing evaluation model. Combined with the data from the environmental perception module, the sealing score or grade of the interface rubber ring is calculated (e.g., good, slight leakage, serious leakage). At the same time, the positioning information of the interface (well number, depth, azimuth), evaluation results and raw data fragments are packaged and sent to the ground terminal through the wireless communication module for display, storage and generation of test report.

[0013] The beneficial effects of the present invention are as follows: The present invention provides a sensing device for detecting the sealing performance of rubber rings and its method of use. The device adopts a sealing performance sensing structure and has the advantages of compact structure, safe operation, accurate positioning and intelligent judgment. It can quickly and accurately detect the sealing performance of rubber rings and overcome the defects of the prior art. Attached Figure Description

[0014] Figure 1 This is a front view of a sensing device used to detect the sealing performance of rubber rings.

[0015] The components in the attached diagram are labeled as follows: 1. Electric winch; 2. Retractor; 3. Depth encoder; 4. Electronic compass; 5. Tilt sensor; 6. Embedded microprocessor; 7. Controllable sound source generator; 8. Acoustic sensor array; 9. Environmental sensing structure; 10. Ring LED lighting; 11. 360° anti-fog camera; 12. Main control cabin. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0017] Please see Figure 1 The present invention includes: a sensing device for detecting the sealing performance of a rubber ring, comprising a device body, the device body consisting of a cable winding machine 2 with an electric winch 1 installed and a main control cabin 12, the main control cabin 12 being installed on the cable of the winding machine 2, and a sealing performance sensing structure being installed on the device body. It has the advantages of compact structure, safe operation, accurate positioning and intelligent judgment, and can quickly and accurately detect the sealing performance of the rubber ring, overcoming the defects of the prior art.

[0018] The main control cabin 12 is a waterproof and corrosion-resistant sealed shell, which constitutes the main structure of the device and provides waterproof and corrosion-resistant protection. The internal support is used to fix the various structures to ensure the overall structural stability and underwater working reliability.

[0019] The sealed sensing structure includes an acoustic detection structure, a motion positioning structure, a data processing structure, and a power supply structure.

[0020] The acoustic detection structure includes an acoustic sensor array 8 arranged on the side wall of the main control cabin 12 for receiving acoustic wave signals from all directions, and a controllable sound source generator 7 installed at the bottom of the main control cabin 12 for emitting specific excitation sound waves.

[0021] The controllable sound source generator 7 is a low-frequency piezoelectric ceramic transducer with an operating frequency range of 50Hz to 5kHz, which is used to excite and detect low-frequency acoustic features related to micro-leakage of the rubber ring. The controllable sound source generator 7 actively emits sound waves of optimized frequency to excite the leakage point to generate a stronger characteristic response, thereby improving the signal-to-noise ratio and detection sensitivity.

[0022] The acoustic sensor array 8 is composed of multiple composite sensors evenly distributed in a ring. Each composite sensor integrates a broadband hydrophone and an air microphone to adapt to different detection environments with or without water in the well. The acoustic sensor array 8 is responsible for capturing complex sound field information in the well in all directions with high sensitivity, especially the weak leakage sound from the gaps in the rubber ring.

[0023] The motion positioning structure includes a depth encoder 3 for measuring the lowering depth, an electronic compass 4 for measuring the azimuth angle, and an inclination sensor 5 for measuring the horizontal attitude. The electronic compass 4 and the inclination sensor 5 are installed inside the main control cabin 12. The motion positioning structure is used to monitor and control the spatial position and attitude of the main control cabin 12 inside the inspection well in real time.

[0024] The electronic compass 4 and the tilt sensor 5 are used to determine the circumferential orientation of the interface and whether the device is aligned, ensuring that the acoustic sensor array 8 is facing the detection target, and achieving spatial positioning with centimeter-level accuracy.

[0025] The depth encoder 3 is installed on the electric winch 1, which can be driven by control commands sent by the external control terminal through the wireless communication module to realize the automatic lifting and hovering positioning of the main control cabin 12.

[0026] The depth encoder 3 is used to accurately measure the vertical position of the interface.

[0027] The data processing structure is installed inside the main control cabin 12. The data processing structure includes an embedded microprocessor 6, which is electrically connected to the acoustic detection structure and the motion positioning structure, respectively, and is used to control signal transmission and acquisition, process acoustic signals, and fuse positioning data.

[0028] The embedded microprocessor 6 has a built-in sealing performance evaluation model for assessing the sealing status of the rubber ring based on the characteristics of the processed acoustic signal.

[0029] The power supply structure is installed inside the main control cabin 12 and is electrically connected to the acoustic detection structure, the motion positioning structure, the data processing structure and the power supply structure, and is used to supply power to each power unit inside the main control cabin 12.

[0030] The main control cabin 12 is also equipped with an environmental sensing structure 9, which includes a water temperature sensor, a turbidity sensor, and a pressure sensor. The water temperature sensor, the turbidity sensor, and the pressure sensor are all electrically connected to the embedded microprocessor 6 to collect environmental parameters and input them into the data processing structure for environmental compensation correction by the sealing evaluation model.

[0031] The environmental sensing structure 9 is used to quantify environmental factors such as water temperature and turbidity, which affect the propagation speed and attenuation of sound waves. The data from this structure is used to correct model judgments and improve the consistency of evaluation results under different environments.

[0032] The main control cabin 12 is also equipped with a ring LED lighting 10 and a 360° anti-fog camera 11. The 360° anti-fog camera 11 is electrically connected to the embedded microprocessor 6 and is used to acquire visual images inside the well to assist in the visual recognition and positioning of the pipeline interface.

[0033] The ring-shaped LED light 10 and the 360° anti-fog camera 11 work together to provide lighting and video images, helping operators to intuitively understand the conditions inside the well, make secondary confirmations, and retain image data.

[0034] The embedded microprocessor 6 integrates a signal preprocessing unit, a voiceprint feature analysis algorithm library, and a wireless communication module. The signal preprocessing unit is used to perform bandpass filtering, gain amplification, and adaptive noise reduction on the raw signal received by the acoustic sensor array 8. The voiceprint feature analysis algorithm library is used to extract characteristic frequencies, amplitude spectra, phase spectra, and coherence indices between sensors related to rubber ring leakage from the preprocessed signal.

[0035] The wireless communication module is connected to the external control terminal and the depth encoder 3. The wireless communication module is used to upload the device positioning information, the collected acoustic signal characteristics, the sealing evaluation results and environmental parameters to the external control terminal.

[0036] The sealing performance evaluation model is a model trained based on machine learning algorithms. Its input is the multidimensional acoustic feature vector extracted by the acoustic feature analysis algorithm library, and its output is the sealing performance evaluation result of the rubber ring.

[0037] A method for using a sensing device for detecting the sealing performance of rubber rings, comprising the following steps: 1) Test preparation and lowering: Connect the main control cabin 12 to the external control terminal through a cable, then turn on the power to enable it to perform a self-test, and finally lower the main control cabin 12 into the inspection well to be tested through the take-up and drop machine 2.

[0038] 2) Full-well acoustic scanning and interface positioning: During the lowering process, the controllable sound source generator 7 emits a sweep frequency excitation signal and the acoustic sensor array 8 analyzes the echo. Detection and lowering: Connect the main control cabin 12 to the external control terminal through a cable, then turn on the power to make it perform a self-test, and finally lower the main control cabin 12 into the inspection well to be tested through the take-up and drop machine 2.

[0039] 3) Precise fixed-point detection: Based on the well structure map, the main control cabin 12 is moved to the center depth position of each pipe interface, and the attitude is adjusted so that the acoustic sensor array 8 is facing the interface. At each fixed point, the controllable sound source generator 7 emits a set of optimized detection frequency signals, and the acoustic sensor array 8 synchronously collects high signal-to-noise ratio response signals.

[0040] 4) Signal processing and feature extraction: The signals collected at each interface are preprocessed by the signal preprocessing unit and the acoustic feature analysis algorithm library is run to extract the multi-dimensional acoustic feature vector at the interface that is strongly correlated with the sealing state of the rubber ring.

[0041] 5) Intelligent evaluation and result output: The extracted multi-dimensional acoustic feature vector is input into the pre-trained sealing evaluation model. Combined with the data of the environmental perception structure 9, the sealing level of the interface rubber ring (e.g., good, slight leakage, serious leakage) is calculated. At the same time, the positioning information of the interface (well number, depth, orientation), evaluation results and original data fragments are packaged and sent to the external control terminal through the wireless communication module for display, storage and generation of detection report.

[0042] Compared with the prior art, the present invention provides a sensing device and its method for detecting the sealing performance of rubber rings. The device adopts a sealing performance sensing structure and has the advantages of compact structure, safe operation, accurate positioning and intelligent judgment. It can quickly and accurately detect the sealing performance of rubber rings and overcome the defects of the prior art.

[0043] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A sensing device for detecting the sealing performance of rubber rings, characterized in that, The device includes a main body, which consists of a cable retractor equipped with an electric winch and a main control cabin. The main control cabin is mounted on the cable of the retractor. The device also has a sealed sensing structure installed on the main body. The sealed sensing structure includes an acoustic detection structure, a motion positioning structure, a data processing structure, and a power supply structure; The acoustic detection structure includes an acoustic sensor array deployed on the side wall of the main control cabin for receiving acoustic wave signals from all directions, and a controllable sound source generator installed at the bottom of the main control cabin for emitting specific excitation sound waves. The motion positioning structure includes a depth encoder for measuring the descent depth, an electronic compass for measuring the azimuth angle, and an inclination sensor for measuring the horizontal attitude. The electronic compass and the inclination sensor are installed in the main control cabin, and the depth encoder is installed on the electric winch. The data processing structure is installed inside the main control cabin. The data processing structure includes an embedded microprocessor, which is electrically connected to the acoustic detection structure and the motion positioning structure. The embedded microprocessor has a built-in sealing performance evaluation model for evaluating the sealing status of the rubber ring based on the characteristics of the processed acoustic signal. The power supply structure is installed inside the main control cabin and is electrically connected to the acoustic detection structure, the motion positioning structure, the data processing structure, and the power supply structure.

2. The sensing device for detecting the sealing performance of a rubber ring according to claim 1, characterized in that: The controllable sound source generator is a low-frequency piezoelectric ceramic transducer with a working frequency range of 50Hz to 5kHz.

3. The sensing device for detecting the sealing performance of a rubber ring according to claim 2, characterized in that: The acoustic sensor array consists of multiple composite sensors evenly distributed in a ring, each of which integrates a broadband hydrophone and an air microphone.

4. The sensing device for detecting the sealing performance of a rubber ring according to claim 3, characterized in that: The main control cabin is also equipped with an environmental sensing structure, which includes a water temperature sensor, a turbidity sensor, and a pressure sensor. The water temperature sensor, the turbidity sensor, and the pressure sensor are all electrically connected to the embedded microprocessor.

5. The sensing device for detecting the sealing performance of a rubber ring according to claim 4, characterized in that: The main control cabin is also equipped with a ring-shaped LED light and a 360° anti-fog camera on its exterior. The 360° anti-fog camera is electrically connected to the embedded microprocessor.

6. The sensing device for detecting the sealing performance of a rubber ring according to claim 5, characterized in that: The embedded microprocessor integrates a signal preprocessing unit, a voiceprint feature analysis algorithm library, and a wireless communication module. The wireless communication module is connected to an external control terminal and the depth encoder.

7. A sensing device for detecting the sealing performance of a rubber ring according to claim 6, characterized in that: The sealing performance evaluation model is a model trained based on machine learning algorithms. Its input is the multidimensional acoustic feature vector extracted by the acoustic feature analysis algorithm library, and its output is the sealing performance evaluation result of the rubber ring.

8. The method of using the sensing device for detecting the sealing performance of a rubber ring as described in claim 7, characterized in that, The specific steps include: 1) Test preparation and lowering: Connect the main control cabin to the external control terminal via cable, then turn on the power to enable it to perform a self-test, and finally lower the main control cabin into the inspection well to be tested using the take-up and drop machine; 2) Full-well acoustic scanning and interface positioning: During the lowering process, the controllable sound source generator emits a sweep frequency excitation signal and the acoustic sensor array analyzes the echo to detect preparation and lowering: The main control cabin is connected to the external control terminal through a cable, then the power is turned on to make it perform self-test, and finally the main control cabin is hoisted into the inspection well to be tested by the retractor. 3) Precise fixed-point detection: Based on the well structure map, the main control cabin is moved to the center depth position of each pipe interface, and the attitude is adjusted so that the acoustic sensor array is facing the interface. At each fixed point, the controllable sound source generator emits a set of optimized detection frequency signals, and the acoustic sensor array synchronously collects high signal-to-noise ratio response signals. 4) Signal processing and feature extraction: The signals collected at each interface are preprocessed by the signal preprocessing unit and the acoustic feature analysis algorithm library is run to extract the multi-dimensional acoustic feature vector at the interface that is strongly correlated with the sealing state of the rubber ring. 5) Intelligent evaluation and result output: The extracted multidimensional acoustic feature vector is input into the pre-trained sealing evaluation model. Combined with the data from the environmental perception module, the sealing score or grade of the interface rubber ring is calculated (e.g., good, slight leakage, serious leakage). At the same time, the positioning information of the interface (well number, depth, azimuth), evaluation results and raw data fragments are packaged and sent to the ground terminal through the wireless communication module for display, storage and generation of test report.

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