CN-122016809-A - Visual detection device and method for hydraulic structure in muddy water environment

Abstract

The invention discloses a visual detection device and method for a hydraulic structure in a muddy water environment, and belongs to the field of intelligent operation and maintenance of hydraulic engineering. The device comprises a grab bar, a high-definition waterproof camera, a double-layer rubber sleeve, a pressure water pipe and a drain pipe. The method is characterized in that the detection surface is pre-washed by pressurized clean water, a second rubber sleeve with a longer lower edge is used for preferentially contacting the structure and forming a closed space, clean water is injected to replace internal muddy water, and then the first rubber sleeve is contacted with the outer layer to form an outer layer seal, so that a local clean water window high-definition observation is created in the muddy water, and the device can be integrated with a crack width meter or switched into a dry air injection mode to realize quantitative measurement of diseases or obtain an ultra-high definition image. The invention solves the observation problem caused by poor light transmittance of muddy water, realizes the integrated operation from flushing, sealing, replacement and observation, and has the advantages of intuitive principle, clear and reliable image, expandable function and convenient operation.

Inventors

• SHAN CHANGXI
• HU SHAOWEI
• ZHAO SHENGLING
• YE YUXIAO
• SUN PANXU
• ZHAO YAHONG

Assignees

• 六合郑大科学技术转化中心
• 郑州大学

Dates

Publication Date

20260512

Application Date

20260211

Claims (6)

1. 1. The visual detection device for the hydraulic structure in muddy water environment is characterized by comprising an embedded waterproof video data line (11) and a pressure water pipe (12), wherein the embedded waterproof video data line (11) passes through a grab rail (114) and is connected with a high-definition waterproof camera (113) for observing disease characteristics of the surface of the structure (3), and the pressure water pipe (12) is connected with a shunt opening (13) for flushing water into a first shunt water pipe (15) and a second shunt water pipe (16) so as to flush sediment such as silt on the surface of the structure (3); The water injection device is characterized in that the ends of the first water diversion pipe (15) and the second water diversion pipe (16) are connected with a first rubber sleeve (17) and a second rubber sleeve (18), a first reinforced connecting port (14) and a second reinforced connecting port (19) are arranged at the joint parts of the first water diversion pipe and the second water diversion pipe, and are used for ensuring that the water outlets of the first water diversion pipe (15) and the second water diversion pipe (16) are not blocked due to large deformation of the first rubber sleeve (17) and the second rubber sleeve (18) in the water injection process, and the second rubber sleeve (18) is arranged at the inner side of the first rubber sleeve (17) and is connected with the bottom of a grab rail (114) so as to isolate the space on the surface of the structure (3); The water draining pipe (112) is inserted into the first rubber sleeve (17) and the second rubber sleeve (18), a first one-way valve (111) and a second one-way valve (110) are arranged at the contact part of the water draining pipe (112) and the first rubber sleeve (17) and the second rubber sleeve (18) and used for draining water and air in the first rubber sleeve (17) and the second rubber sleeve (18) and preventing external water from entering the water draining pipe (112).
2. 2. The visual detection device for hydraulic structures in muddy water environments according to claim 1, wherein the lower edge of the second rubber sleeve (18) is lower than the first rubber sleeve (17), when the visual detection device is vertically inserted into muddy water environments and is in contact with the surface of the structure (3), the second rubber sleeve (18) is firstly in contact with the surface of the structure (3), and after muddy water in a space isolated by the second rubber sleeve (18) is cleared, the first rubber sleeve (17) is in contact with the surface of the structure (3).
3. 3. The device for visual detection of hydraulic structures in muddy water environments according to claim 1, wherein the second rubber sleeve (18) provides an observation space for the high-definition waterproof camera (113), and the first rubber sleeve (17) provides protection for the second rubber sleeve (18) by ensuring that the closed space in the second rubber sleeve (18) is not influenced by external muddy water.
4. 4. The visual detection device for the hydraulic structure in the muddy water environment according to claim 1, wherein before the second rubber sleeve (18) is contacted with the surface of the structure (3), water is injected into the pressure water pipe (12) and the surface sludge and sand sediment of the structure (3) are washed, and then the second rubber sleeve (18) and the first rubber sleeve (17) are sequentially contacted with the surface of the structure (3).
5. 5. The visual detection device for hydraulic structures in muddy water environment according to claim 1, wherein the grab rail (114) is provided with a portable display screen (6), and the portable display screen (6) is connected with an embedded waterproof video data line (11) for displaying the photographed picture of the high-definition waterproof camera (113) in real time; the middle part of the grab bar (114) is provided with a handrail (7) for providing a holding function for operators, the pressure water pipe (12) is connected with the corset type exoskeleton (5) for connecting with a human body and increasing stability, and the pressure water pipe (12) is connected to the movable water purification vehicle (4) through the corset type exoskeleton (5) and finally used for filtering and providing a clear water source for the hydraulic structure visual detection device (1) in a muddy water environment from the muddy water (2).
6. 6. A visual detection method for a hydraulic structure in a muddy water environment comprises the following steps: S1, an operator wears a girdle type exoskeleton (5) between waists and is connected with a movable water purification vehicle (4), and then the movable water purification vehicle (4) is started to pre-operate a real-time water purification function; S2, installing an armrest (7) and a portable display screen (6) on the hydraulic structure visual detection device (1) in a muddy water environment, and debugging shooting pictures of the high-definition waterproof camera (113); s3, selecting a part to be observed on the surface of the structure (3) in the muddy water environment, flushing silt and sand sediment by using a hydraulic structure visual detection device (1) in the muddy water environment, sequentially enabling a second rubber sleeve (18) and a first rubber sleeve (17) to be in contact with the surface of the structure (3), and recording and storing a surface observation image after the surface image of the structure (3) is clearly visible; S4, marking the observed points with diseases, and continuing to detect according to the plan.

Description

Visual detection device and method for hydraulic structure in muddy water environment Technical Field The invention belongs to the field of intelligent operation and maintenance of hydraulic engineering, in particular to a method for detecting an underwater hydraulic concrete structure, and particularly relates to a device and a method for visually detecting the hydraulic structure in a muddy water environment. Background In the long-term running process of hydraulic engineering, the hydraulic concrete structure is subjected to water flow scouring, freeze thawing circulation, chemical erosion and loading, and the surface is easy to generate diseases such as cracks, denudation, exposed ribs and the like. The surface diseases can be found timely and accurately, and the method is a precondition for structural safety evaluation and targeted repair. However, many reservoirs and rivers in China have extremely high sediment content in flood season or under specific hydrologic conditions, a muddy water environment is formed, and the water body has extremely poor light transmittance, so that the method brings serious challenges for the visual detection of the surface of the underwater structure. The traditional underwater exploring of the diver has the advantages of high risk, low efficiency and incapability of retaining objective and clear image evidence, the shooting distance of the conventional underwater robot-mounted optical shooting equipment in muddy water is shortened sharply, the image is blurred, the contrast is low, the effective observation range is severely limited, and the micro cracks and the degraded features are difficult to identify. At present, detection technology applied to muddy water environment mainly depends on acoustic imaging equipment, such as multi-beam sonar and side-scan sonar. Although the technologies can overcome the optical limitation, the rough outline of the structure is obtained in muddy water, but the spatial resolution is limited, the detail diseases such as surface textures, tiny cracks, material loss and the like can not be clearly presented, and the fine requirements of engineering damage can not be met. In recent years, active optical technologies such as laser scanning and range gating imaging are adopted, or an image enhancement algorithm is utilized to improve the quality of muddy water images, but the methods are complex in equipment, high in cost and sensitive to environmental conditions, and the effects in extremely high-turbidity water bodies are still not ideal. More importantly, the prior art schemes focus on how to "penetrate" or "parse" out images from turbid media, and fail to fundamentally solve the problem of turbidity of observation window media, so that the definition, reliability and intuitiveness of detection results cannot meet the requirements of high-standard operation and maintenance. Therefore, a device and a method for actively creating a local clean water observation environment and realizing direct, high-definition and reliable visual detection of the surface of an underwater structure are needed. According to the inspection, the disclosed high-definition camera shooting technology and image analysis method related to the muddy water environment are not few, but the related technology for directly acquiring the high-definition image data in the muddy water environment is not known. The published relevant schemes are now listed: The Chinese patent with publication number of CN222528632U discloses a micro-touch type muddy water underwater topography instrument which can be suitable for measuring the topography of shallow sea areas. The Chinese patent with publication number CN117237792A discloses a muddy water defect detection method based on a multi-feature recognition technology, and the size of a disease area in the whole underwater structure can be estimated. The Chinese patent with publication number of CN116465900A discloses an underwater robot muddy water detection device and a control method thereof, which solve the problem that the existing underwater robot cannot accurately pick up and detect an underwater structure where the existing underwater robot is located due to muddy water quality in a plurality of watercourses. The Chinese patent with publication number of CN219215347U discloses a muddy water area apparent disease detection device based on a paper folding structure, and the muddy water in the muddy water area within the data acquisition range is replaced by clear water to achieve the effect of image definition. Chinese patent publication No. CN209002113U discloses a box type muddy water camera system, which can clearly detect the structure in muddy water state, and improve the efficiency of video observation operation in muddy water. The prior art generally does not consider the problems of poor tightness, low efficiency of replacing muddy water by clear water, single detection scene and the like in visual detection of the hydraul