A large ship lock high water head counter-arc door water leakage detection device

Abstract

The utility model relates to a large -scale ship lock high water head reverse arc door water leakage detection device, aims at solving the problem of high water head reverse arc door water leakage concealment, fixed detection position, signal is easy to be interfered with. The detection device includes guide rail, sliding mounting seat, hydrophone and signal transmission system including data collector, signal processor, alarm device, and the guide rail is established on the both sides of reverse arc door, and the sliding mounting seat is along the guide rail and is limited to slide and adjusts the detection position, and the hydrophone is installed in the sliding mounting seat and is equipped with the net cylinder protection outside, and the signal line is laid in the guide rail. The hydrophone gathers the water leakage sound signal, and the signal transmission system triggers the alarm after processing. The device can accurately capture the water leakage signal, real -time early warning, protects the ship lock equipment, and reduces the operation and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of lock equipment monitoring technology, and in particular to a leakage detection device for a high-head reverse arc gate of a large lock. Background Technology

[0002] As a core hub for inland waterway transportation, large ship locks rely heavily on their anti-reverse gates, which are crucial components for controlling the flow of water through the lock and ensuring the safe passage of vessels. In actual operation, large ship lock anti-reverse gates typically face long-term high-head conditions (e.g., average head exceeding 40m), continuously enduring immense water pressure, water flow impact, and the corrosive underwater environment. The watertight seal between the anti-reverse gate and the water channel wall is a high-risk area for failure—the sealing strips are subject to long-term compression, wear, and water erosion, easily leading to aging, cracking, deformation, and detachment. Simultaneously, silt and debris within the water channel can become trapped in the gap between the anti-reverse gate and the channel wall, causing the watertight seal to fail. This ultimately results in leakage when the anti-reverse gate is closed, and in severe cases, even high-pressure water jets, affecting not only the lock's water conveyance efficiency but also eroding the channel's concrete structure and shortening the equipment's lifespan.

[0003] However, existing leakage detection technology for high-head reverse-arc gates in large ship locks has significant shortcomings, making it difficult to meet the needs of safe operation and efficient maintenance. The specific problems are as follows: 1. The leakage points of the reverse arc gate are concentrated at the water-stopping joints between its two sides and the water conveyance corridor wall. This area is located inside the water conveyance corridor and is in a submerged or humid environment for a long time, making it difficult to observe directly by manual inspection. In the early stage, the leakage flow is small and the water sound signal is weak, which is easily masked by environmental noise such as water flow noise and ship navigation noise in the corridor. Staff often can only discover the leakage after it has worsened, missing the best opportunity for early repair of the fault. 2. Existing leak detection methods mostly adopt a "fixed-point sensing" design, which means that the sensing components such as hydrophones are directly fixed at specific positions on the curved door or corridor wall. It is impossible to adjust the detection position according to the length of the mating surface between the curved door and the water conveyance corridor wall, or the distribution of easily leaking areas (such as the joint of the water-stop rubber strip and the end of the curved door). This results in blind spots in some key areas, making it difficult to fully capture leak signals from different locations. 3. Traditional detection devices lack a systematic signal transmission and processing design. The leakage signals collected by hydrophones mostly rely on short-distance wired transmission, which is easily affected by the humid environment in the corridor, leading to line failure. At the same time, there is a lack of dedicated data acquisition and processing modules, which cannot quickly convert the collected sound signals into identifiable leakage characteristics. Alarm devices mostly provide on-site sound and light prompts, which are difficult to synchronize to the remote control terminal in a timely manner, making it impossible for staff to quickly obtain fault information and take measures. Utility Model Content

[0004] To address the core pain points of leakage detection in high-head reverse arc gates of large ship locks, such as strong concealment, poor detection flexibility, and lagging signal processing, there is an urgent need for a dedicated detection device with adjustable detection position, stable signal transmission, and efficient fault identification, so as to achieve early detection and warning of leakage faults in reverse arc gates, ensure the safe operation of ship locks, and reduce maintenance costs.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A leakage detection device for a high-head reverse arc gate in a large ship lock includes guide rails, a sliding mounting base, a signal transmission system, and a hydrophone. A reverse arc gate is installed within the water conveyance channel of the ship lock. A boom connects to the positive arc surface of the reverse arc gate and controls its opening and closing. Water-stop strips are installed between the two sides of the reverse arc gate and the wall of the water conveyance channel. Guide rails are arranged parallel to each other on both sides of the arc surface of the reverse arc gate. The sliding mounting base is installed within the guide rails and slides along the guide rails to adjust the detection position. A hydrophone is installed within the sliding mounting base, and the hydrophone is connected to the signal transmission system.

[0006] In a preferred embodiment, the guide rail is fitted to the end face of the reverse-curved door. The guide rail has an internal hollow structure. The upper end of the guide rail is provided with rail clamping plates on both sides. The rail clamping plates are parallel to each other and perpendicular to the upper end face of the guide rail. Side plates are provided on both sides of the rail clamping plates. The mounting bolts pass through the side plates and are detachably connected to the reverse-curved door.

[0007] In a preferred embodiment, the guide rail has a cable outlet at its end, the rail clamping plate has through grooves on both sides, and the guide rail has a cable hole on its upper surface. The cable hole is located between the rail clamping plates along the length of the guide rail axis.

[0008] In a preferred embodiment, the sliding mounting base includes a base, and a slider is provided on the lower end face of the base. The slider is engaged between the guide plates and slides along the guide plates. Guide rods are connected through both sides of the slider. The guide rods pass through the slide grooves at both ends. The guide rods are provided with external threads at both ends and are threaded to locking nuts. The locking nuts on both sides together clamp and fix the base.

[0009] In a preferred embodiment, a placement groove is provided on the upper surface of the base, the hydrophone is vertically snapped into the placement groove, and a mesh tube is provided on the outer side of the placement groove, the lower end of the mesh tube being vertically and fixedly connected to the base.

[0010] In a preferred embodiment, the upper end of the hydrophone is a probe, and the lower end of the hydrophone is connected to a signal line. The signal line passes through a wire hole and is laid along the inside of the guide rail. The signal line is connected to the signal transmission system.

[0011] In a preferred embodiment, the signal transmission system includes a data acquisition unit, a signal processor, and an alarm device; the data acquisition unit is installed at the upper end of the anti-arc gate and electrically connected to the signal line, and the data acquisition unit is electrically connected to the signal processor and alarm device located outside the lock's water conveyance corridor.

[0012] A leakage detection device for a high-head reverse arc gate in a large ship lock, which has the following beneficial effects during use: 1. This system employs an underwater hydrophone deployment design, directly installing the sensing components in key underwater areas near the anti-reverse arc gate. This allows for the direct capture of underwater acoustic signals generated by gate leakage and operational malfunctions, effectively avoiding surface interference factors such as ship navigation noise, on-site construction noise, and surface environmental noise, thus preventing external noise from masking weak fault signals. Furthermore, in some solutions, the acoustic sensors are used in conjunction with noise transmitters to further reduce the noise of the acquired raw signals, ensuring the signal quality transmitted to subsequent processing modules and providing reliable raw data support for fault identification. 2. The system uses an industrial control computer to professionally process the collected audio signals through fault processing and analysis. It not only identifies the amplitude and spectral distribution characteristics of the signals but also incorporates various algorithms and AI technologies to learn and judge features such as water leakage, abnormal lever operation, and cylinder malfunction. This intelligent recognition method can accurately distinguish between "normal water supply sound and cylinder operation sound" and "water leakage sound and abnormal component friction sound," achieving an effective recognition rate of up to 95%. This significantly reduces false alarms and missed alarms caused by traditional manual judgment or simple signal comparison. Even minor water leakage faults in the early stages of the anti-arc gate can be accurately detected. 3. This system constructs a full-link response mechanism of "real-time acquisition - instant processing - automatic alarm": the hydrophone continuously acquires the operating status signal of the anti-arc gate 24 hours a day. After the signal is transmitted, the industrial control computer instantly performs time-domain signal spectrum conversion, fault feature comparison and identification; once water leakage or other operational faults are detected, the alarm is immediately triggered to output an alarm signal, eliminating the need for regular manual inspections. At the same time, the industrial control computer supports real-time data extraction and storage, allowing staff to retrieve historical monitoring data at any time to trace the fault development process, facilitating rapid location of the fault cause and implementation of maintenance measures, preventing the fault from escalating from an initial minor state into a serious safety hazard; 4. Traditional high-head reverse-arc gate inspections require personnel to enter the enclosed water conveyance channel, perform underwater operations, or conduct frequent shoreline observations. This is labor-intensive and poses safety risks. This system, however, only requires personnel to remotely monitor via an industrial control computer, receive alarm signals, and then proceed to the site for targeted handling, reducing manpower input and operational risks. Furthermore, early warning systems enable "early detection and early repair," preventing damage to the reverse-arc gate's sealing components and the water conveyance channel walls due to long-term water leakage. This reduces the frequency of replacing components such as water-stop strips and fixing bolts, lowering material and labor costs for later maintenance. Simultaneously, it prevents lock shutdowns due to malfunctions, ensuring shipping efficiency and the long-term safe operation of the lock. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the guide rail structure of this utility model; Figure 3 This is an enlarged schematic diagram of the guide rail end structure of this utility model; Figure 4 This is an enlarged schematic diagram of the sliding mounting base structure of this utility model; Figure 5 This is a schematic diagram of the installation structure of the hydrophone of this utility model; Figure 6 This is a schematic diagram of the signal transmission device of this utility model.

[0014] In the diagram: 1. Reverse arc gate; 2. Water conveyance corridor; 3. Guide rail; 301. Side plate; 302. Mounting bolt; 303. Rail plate; 304. Slide groove; 305. Cable outlet; 306. Cable hole; 4. Sliding mounting base; 401. Base; 402. Slider; 403. Guide rod; 404. Locking nut; 405. Placement groove; 406. Net cylinder; 5. Hanging rod; 6. Signal transmission system; 601. Data acquisition unit; 602. Signal processor; 603. Alarm device; 7. Hydrophone; 701. Probe; 702. Signal line. Detailed Implementation

[0015] This embodiment discloses a leakage detection device for a high-head reverse arc gate in a large ship lock, which is suitable for large ship locks with an average head of more than 40m. It specifically solves the technical problems of concealed leakage faults, fixed detection positions, and easy interference of signal transmission under high-head conditions. Its specific implementation structure and working principle are as follows.

[0016] like Figure 1 As shown, the core of the detection device includes a guide rail 3, a sliding mounting base 4, a signal transmission system 6, and a hydrophone 7. The water conveyance channel 2 of the lock provides the opening and closing space for the reverse arc gate 1. Water-stop strips are installed between the two sides of the reverse arc gate 1 and the wall of the water conveyance channel 2, achieving a sealed fit. The hanger 5 connects to the positive arc surface of the reverse arc gate 1 and is used to control the opening and closing action of the reverse arc gate 1, thereby realizing the opening and closing of the water conveyance channel 2 and the regulation of the lock water level. The water-stop strips can fill the gap between the reverse arc gate 1 and the wall of the water conveyance channel 2, reducing minor water seepage during normal operation. To cover the leakage detection needs of the water-stopping strip area between the two sides of the reverse-arc gate 1 and the wall of the water conveyance corridor 2, guide rails 3 are fixed parallel to each other on both sides of the arc surface of the reverse-arc gate 1. The extension direction of the guide rails 3 is consistent with the opening and closing direction of the reverse-arc gate 1. The sliding mounting base 4 is fitted into the guide rail 3 and can slide along the length of the guide rail 3. By adjusting the position of the sliding mounting base 4, leakage detection can be adapted to different areas such as the water-stopping section in the middle of the reverse-arc gate 1 and the easily worn section at the end. The sliding mounting base 4 has a reserved installation cavity, in which the hydrophone 7 is fixed. The detection end of the hydrophone 7 faces the water-stopping gap between the reverse-arc gate 1 and the wall of the water conveyance corridor 2, and can collect underwater audio signals in this area in real time. The hydrophone 7 establishes a signal connection with the signal transmission system 6 through a cable to realize the transmission of the collected signal.

[0017] Preferred solutions include Figure 2 As shown, to ensure the installation stability of the guide rail 3 and the movement accuracy of the sliding mounting base 4, the guide rail 3 is tightly fitted to the arc surface of the reverse arc door 1, and the guide rail 3 adopts an internal hollow structure, which is used for the concealed laying of the subsequent signal line 702. Two parallel retaining plates 303 are vertically fixed on both sides of the upper edge of the guide rail 3. The length of the retaining plates 303 is the same as that of the guide rail 3, forming a limiting and guiding structure for the sliding mounting base 4. Simultaneously, side plates 301 are vertically fixed on both sides of the retaining plates 303. Bolt holes adapted to the mounting bolts 302 are provided on the side plates 301. The mounting bolts 302 pass through the bolt holes and are threadedly connected to the arc surface of the reverse arc door 1, realizing the detachable fixing of the guide rail 3 and the reverse arc door 1. This structure facilitates the later maintenance and replacement of the guide rail 3, and the tightness of the mounting bolts 302 can be adjusted to ensure the fit between the guide rail 3 and the arc surface of the reverse arc door 1, preventing the sliding mounting base 4 from shifting due to gaps.

[0018] Preferred solutions include Figure 3 As shown, to facilitate the laying of the signal line 702 and the movement of the sliding mounting base 4, a cable outlet 305 is provided at the end of the guide rail 3 near the upper end of the anti-arc door 1. The cable outlet 305 is connected to the hollow structure inside the guide rail 3, allowing the signal line 702 to be led out from inside the guide rail 3. At corresponding positions on the two rail plates 303, elongated grooves 304 are provided. The length of the grooves 304 is the same as that of the rail plates 303, and the width is adapted to the diameter of the guide rod 403. Furthermore, on the upper surface of the guide rail 3, in the area between the two rail plates 303, a wire-passing hole 306 is provided along the length of the guide rail 3 axis. The wire-passing hole 306 penetrates the upper surface of the guide rail 3 and is connected to the hollow structure inside, allowing the signal line 702 of the hydrophone 7 inside the sliding mounting base 4 to pass into the interior of the guide rail 3, preventing cable exposure.

[0019] Preferred solutions include Figure 4As shown, the sliding mounting base 4 includes a base 401, and a slider 402 is integrally formed on the lower end face of the base 401. The width of the slider 402 is adapted to the distance between the two retaining plates 303, and it can be engaged between the two retaining plates 303 and slide along the length direction of the retaining plates 303. Guide rods 403 are connected through both sides of the slider 402. The two ends of the guide rods 403 pass through the sliding grooves 304 on the two retaining plates 303 and extend to the outside of the retaining plates 303. The guide rod 403 has external threads on its outer circumferential surfaces at both ends. The locking nuts 404 are connected to the two ends of the guide rod 403 through the threads. When adjusting the position of the sliding mounting base 4, loosen the locking nuts 404 on both sides and push the base 401 to drive the slider 402 to slide along the rail plate 303. After adjusting to the target detection position, tighten the locking nuts 404 so that the locking nuts 404 are tightly fitted with the outer wall of the rail plate 303. The slider 402 is fixed by friction, thereby locking the position of the sliding mounting base 4 and preventing it from shifting due to water flow impact during detection.

[0020] Preferred solutions include Figure 4 and Figure 5 As shown, to achieve stable installation and protection of the hydrophone 7, a placement groove 405 adapted to the shape of the hydrophone 7 is provided on the upper surface of the base 401. The hydrophone 7 is vertically inserted into the placement groove 405, with the probe 701 of the hydrophone 7 extending upwards out of the placement groove 405, facing the water-stop gap between the anti-arc gate 1 and the wall of the water conveyance corridor 2, ensuring accurate acquisition of leakage sound signals. On the outside of the placement groove 405, a mesh tube 406 with one open end is vertically fixed. The lower end of the mesh tube 406 is sealed to the upper end of the base 401, enclosing the probe 701 and part of the main body of the hydrophone 7. The mesh tube 406 is made of corrosion-resistant metal filter mesh with a pore size smaller than the particle size of common mud and debris in the water conveyance channel 2. It can effectively block mud and debris from hitting the probe 701 of the hydrophone 7, while slowing down the scouring of the hydrophone 7 by the high-speed water flow, avoiding damage to the hydrophone 7, and extending its service life. In addition, the opening of the mesh tube 406 faces upward, so it does not affect the acquisition of sound signals by the hydrophone 7.

[0021] Preferred solutions include Figure 5As shown, the upper end of the hydrophone 7 is a probe 701 for collecting sound signals, and the lower end is connected to a signal line 702 for transmitting signals. The signal line 702 extends vertically downwards from the lower end of the hydrophone 7, passes through a pre-set through hole on the base 401, then through a wire hole 306 on the upper surface of the guide rail 3, and enters the hollow structure inside the guide rail 3. The signal line 702 is laid along the hollow structure inside the guide rail 3, and finally exits from the outlet 305 at the end of the guide rail 3, establishing a signal connection with the signal transmission system 6. This wiring method completely conceals the signal line 702 inside the guide rail 3, avoiding exposure to the humid environment of the water supply corridor 2. This prevents the signal line 702 from being corroded by water flow or scratched by debris, while also reducing interference from water flow impacts on the signal line 702, ensuring stable transmission of leakage signals and preventing signal loss or distortion.

[0022] Preferred solutions include Figure 6 As shown, the signal transmission system 6 includes a data acquisition unit 601, a signal processor 602, and an alarm device 603. The data acquisition unit 601 is encased in a waterproof shell and fixedly installed on the upper end of the anti-arc gate 1 near the cable outlet 305 of the guide rail 3. The signal input terminal of the data acquisition unit 601 is electrically connected to the signal line 702 leading from the cable outlet 305 of the guide rail 3 via a cable. It can receive the raw audio signal transmitted by the hydrophone 7 in real time and perform preliminary amplification and filtering of the signal. The data acquisition unit 601 establishes an electrical signal connection with the signal processor 602 and the alarm device 603 located outside the lock's water conveyance corridor 2 via a waterproof communication cable, such as armored cable suitable for underwater environments. The signal processor 602 is usually placed in the control cabinet of the lock control room and has a built-in leakage sound feature recognition algorithm. It can perform spectrum analysis and feature comparison on the signal transmitted by the data acquisition unit 601 to determine whether a leakage fault exists. The alarm device 603 is linked with the signal processor 602. When the signal processor 602 detects a water leakage characteristic signal, it immediately sends a trigger signal to the alarm device 603. The alarm device 603 then activates an audible and visual alarm, illuminating a red warning light and sounding a buzzer, to alert personnel to go to the site for confirmation. Simultaneously, the signal processor 602 can store historical detection data, facilitating the tracing of the fault's development and providing support for root cause analysis.

[0023] In actual operation, the staff can pre-adjust the position of the sliding mounting base 4 and lock it with the locking nut 404 according to the easily leaking areas of the reverse-curved gate 1, such as the joint of the water-stop rubber strip or the mating area between the end of the reverse-curved gate 1 and the corridor wall. The hydrophone 7 continuously collects the audio signal of the corresponding area 24 hours a day. The signal is transmitted to the data acquisition unit 601 via the signal line 702, and then transmitted from the data acquisition unit 601 to the signal processor 602. The signal processor 602 analyzes the signal characteristics in real time. If it identifies a high-frequency sound, such as a high-speed water flow passing through the gap, which is a leakage sound, it triggers the alarm device 603 to respond. After receiving the alarm signal, the staff can quickly locate the leak by combining the data stored in the signal processor 602 and take timely maintenance measures such as replacing the water-stop rubber strip and cleaning the debris between the reverse-curved gate 1 and the wall of the water conveyance corridor 2, effectively preventing the leakage fault from worsening.

Claims

1. A leakage detection device for a high-head reverse arc gate of a large ship lock, comprising a guide rail (3), a sliding mounting base (4), a signal transmission system (6), and a hydrophone (7); characterized in that: A reverse arc gate (1) is installed in the water conveyance channel (2) of the lock. A boom (5) is connected to the positive arc surface of the reverse arc gate (1) and controls its opening and closing. Water-stop strips are installed between the two sides of the reverse arc gate (1) and the wall of the water conveyance channel (2). Guide rails (3) are arranged parallel to the two sides of the arc surface of the reverse arc gate (1). A sliding mounting seat (4) is installed in the guide rail (3) and slides along the guide rail (3) to adjust the detection position. A hydrophone (7) is installed in the sliding mounting seat (4). The hydrophone (7) is connected to the signal transmission system (6).

2. The leakage detection device for high-head reverse arc gates of large ship locks according to claim 1, characterized in that: The guide rail (3) is attached to the end face of the reverse arc door (1). The guide rail (3) has an internal hollow structure. The upper end of the guide rail (3) is provided with two side plates (303). The side plates (303) are parallel to each other and perpendicular to the upper end face of the guide rail (3). The side plates (301) are provided on both sides of the side plates (303). The mounting bolts (302) pass through the side plates (301) and are detachably connected to the reverse arc door (1).

3. The leakage detection device for high-head reverse arc gates of large ship locks according to claim 2, characterized in that: The end of the guide rail (3) is provided with a cable outlet (305), and the two sides of the rail plate (303) are provided with sliding grooves (304). The upper end face of the guide rail (3) is provided with a wire hole (306). The wire hole (306) is opened along the length of the guide rail (3) axis and is located between the rail plates (303).

4. The leakage detection device for high-head reverse arc gates of large ship locks according to claim 2, characterized in that: The sliding mounting base (4) includes a base (401). A slider (402) is provided on the lower end face of the base (401). The slider (402) is engaged between the rail plates (303) and slides along the rail plates (303) for a limited position. Guide rods (403) are connected through both sides of the slider (402). The two ends of the guide rods (403) pass through the slide grooves (304). The two ends of the guide rods (403) are provided with external threads and are threadedly connected to the locking nuts (404). The locking nuts (404) on both sides together clamp and fix the base (401).

5. The leakage detection device for high-head reverse arc gates of large ship locks according to claim 4, characterized in that: The upper surface of the base (401) is provided with a placement groove (405), and the hydrophone (7) is vertically snapped into the placement groove (405). A mesh tube (406) is provided on the outside of the placement groove (405), and the lower surface of the mesh tube (406) is vertically fixedly connected to the base (401).

6. The leakage detection device for high-head reverse arc gates of large ship locks according to claim 3, characterized in that: The upper end of the hydrophone (7) is a probe (701), and the lower end of the hydrophone (7) is connected to a signal line (702). The signal line (702) passes through the wire hole (306) and is laid inside the guide rail (3). The signal line (702) is connected to the signal transmission system (6).

7. The leakage detection device for high-head reverse arc gates of large ship locks according to claim 6, characterized in that: The signal transmission system (6) includes a data acquisition unit (601), a signal processor (602), and an alarm device (603); the data acquisition unit (601) is installed at the upper end of the anti-arc gate (1) and electrically connected to the signal line (702); the data acquisition unit (601) is electrically connected to the signal processor (602) and the alarm device (603) located outside the water conveyance corridor (2) of the lock.

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