A water leakage detection device
By designing a rotatable windproof cover structure, the problem of unstable coupling at right angles in existing leak detectors was solved, enabling high-quality signal acquisition in different scenarios and improving the accuracy and reliability of leak detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY CONSTRUCTION ENGINEERING GROUP
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-14
AI Technical Summary
The existing electronic leak detectors have bell-shaped windproof covers with flat bottom surfaces, which cannot be stably fitted to right-angled structures on the wall, making it difficult to accurately collect signals in areas with high leakage rates.
A water leakage detection device was designed, which adopts a structure including a telescopic rod and a probe. The probe is equipped with a windproof cover, which consists of a fixed main wing cover and a rotatable movable wing cover. It can switch between planar and right-angled shapes and provides automatic adaptability for unfolding and folding through a torsion spring.
It enables intelligent switching between two scenarios: flat ground and right-angled corners, ensuring stable coupling with the detection surface, improving the accuracy and reliability of leak point location, and reducing the possibility of missed or false detections.
Smart Images
Figure CN224499832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water leakage detection technology, and in particular to a water leakage detection device. Background Technology
[0002] In municipal water supply and building pipe networks, pipe leakage is one of the main causes of water waste and facility damage. To accurately locate leaks in underground or wall-mounted pipes that are not visible, electronic leak detectors are widely used as efficient acoustic detection devices. Their working principle involves using a highly sensitive acoustic sensor (probe) to collect vibration signals generated when a pipe leaks. After amplification and filtering by internal circuitry, the operator can determine the specific location of the leak through headphones or a display screen. Existing electronic leak detector probes are typically equipped with a bell-shaped (also called a "bowl-shaped" or "hemispherical") windproof cover. This design effectively isolates environmental wind noise interference and forms a stable coupling cavity with the contact surface on a flat surface, thus clearly capturing and transmitting the sound wave signals generated by underground leaks.
[0003] However, the existing technologies have significant drawbacks. In actual testing, the junction of the wall and the ground (wall edge) is a pipe interface and stress concentration area, making it a high-risk location for leaks. Because this location forms a 90-degree right angle where a horizontal and a vertical plane intersect, the existing bell-shaped windproof cover has a flat bottom surface, making it impossible to properly fit with two mutually perpendicular planes simultaneously. This results in unstable probe placement and insufficient coupling at such corners, making it difficult to align the sensor directly with potential leak points. Furthermore, gaps in the contact surface introduce significant external noise, severely interfering with the acquisition of effective leak signals. Operators often need to tilt the probe for forced detection, drastically reducing the accuracy and reliability of the results and easily leading to missed or false diagnoses, thus missing the optimal repair window. Therefore, the windproof cover structure of existing leak detector probes is insufficient to meet the needs of accurate detection in special corners such as wall edges. Summary of the Invention
[0004] Therefore, the technical problem to be solved by this utility model is that the bell-shaped windproof cover of the existing electronic leak detector has a flat bottom surface, which cannot be stably attached to the right-angle structure of the wall, making it difficult to accurately collect signals in areas with high leakage rates.
[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a water leakage detection device, including a telescopic rod and a probe disposed at the end of the telescopic rod. A windproof cover is disposed outside the probe. The windproof cover includes a fixed main wing cover and two movable wings. The top of the fixed main wing cover is fixedly connected to the telescopic rod. The two movable wings are symmetrically disposed on both sides of the fixed main wing cover and can rotate around a pivot disposed at the lower end of the fixed main wing cover, so that the windproof cover can switch between an unfolded state with a flat bottom surface and a folded state with a right-angled bottom surface.
[0006] In a preferred embodiment of the water leakage detection device of this utility model: the probe includes a housing, and an acoustic vibration sensor is built into the housing. The fixed main wing cover has a receiving hole on its arc-shaped top, and the receiving hole is adapted to and snapped into the housing.
[0007] In a preferred embodiment of the water leakage detection device of this utility model: the fixed main wing cover is fan-shaped, and the included angle of the fan shape at the bottom is α; when the two movable wing covers are in a fully folded state, the included angle α formed by them and the fixed main wing cover together forms a bottom included angle β of 90 degrees.
[0008] In a preferred embodiment of the water leakage detection device of this utility model: the cross-section of the fixed main wing cover is U-shaped, and a notched ring is provided at both free ends of the U-shaped opening, and a rotating shaft is provided inside each notched ring.
[0009] In a preferred embodiment of the water leakage detection device of this utility model: each of the movable wing covers is also configured as a fan shape, with one side fixed to the fixed main wing cover and the other side being a free side with a rectangular frame. A flexible cover surface is provided between the two. The rectangular frame is fixedly connected to two rotating rings. Each rotating ring is sleeved on a rotating shaft. A torsion spring is provided between the two rotating rings on the same side of the left and right movable wing covers to provide an elastic force that tends to unfold the movable wing cover.
[0010] In a preferred embodiment of the water leakage detection device of this utility model: the flexible cover includes a plurality of U-shaped reinforcing frames with equal spacing, and adjacent U-shaped reinforcing frames are connected by tarpaulins. The U-shaped reinforcing frames are connected to the rectangular frame or one side of the fixed main wing cover by tarpaulins.
[0011] In a preferred embodiment of the water leakage detection device of this utility model: a groove is provided on the outer wall of the notched ring, and a sliding foot is provided at the free end of the U-shaped reinforcing frame, and the sliding foot of each U-shaped reinforcing frame slides along the groove.
[0012] In a preferred embodiment of the water leakage detection device of this utility model: the rectangular frame of the fixed main wing plate, the movable wing cover, and the U-shaped reinforcing frame are made of rigid plastic or metal; the tarpaulin is made of flexible rubber or waterproof canvas.
[0013] In a preferred embodiment of the water leakage detection device of this utility model: the telescopic rod is an adjustable-length sleeve structure, and a handle is provided at the top, the handle and the windproof cover are on the same plane.
[0014] In a preferred embodiment of the water leakage detection device of this utility model: the sensor is electrically connected to an external host via an antenna or wired connection, and the host is wired to an earphone.
[0015] The beneficial effects of this invention are as follows: Through its adaptive and deformable windproof cover design, the device achieves intelligent switching between two scenarios: flat ground and right-angle corners. Specifically, under the action of a torsion spring, the movable wing automatically unfolds, forming a semi-circular cover with a flat bottom surface together with the fixed main wing, ensuring full coupling with the flat ground and excellent noise insulation performance. When detecting corners, simply pushing the probe causes the movable wing to overcome the spring force and fold inward synchronously, forming a precise 90-degree right-angle concave surface together with the fixed main wing, thus achieving a tight fit with the corner. This structural breakthrough allows operators to directly detect high-leakage areas without changing parts or tilting the probe, greatly improving the accuracy and reliability of locating leak points at corners. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the front structure of the telescopic rod and windproof cover of this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of the telescopic rod and windproof cover of this utility model;
[0020] Figure 4 This is a schematic diagram of the internal structure of the fixed main wing cover of this utility model;
[0021] Figure 5 This is a schematic diagram of the connection of the windproof cover frame of this utility model;
[0022] Figure 6 This is a schematic diagram showing the included angle between the fixed main wing cover and the folded movable wing cover of this utility model.
[0023] In the picture:
[0024] 1. Telescopic pole; 11. Handle; 2. Probe; 21. Housing; 22. Acoustic vibration sensor; 3. Windproof cover; 31. Fixed main wing cover; 311. Receiving hole; 312. Notched ring; 313. Slide groove; 32. Movable wing cover; 321. Rectangular frame; 322. Flexible cover surface; 3231. U-shaped reinforced frame; 3232. Sliding foot; 323. Canopy; 324. Rotating ring; 33. Rotating shaft; 34. Torsion spring; 4. Main unit; 5. Earphone; Detailed Implementation
[0025] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0026] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.
[0027] Reference Figures 1-5 This embodiment provides a water leakage detection device, including a telescopic rod 1 and a probe 2 disposed at the end of the telescopic rod 1. A windproof cover 3 is disposed outside the probe 2. The windproof cover 3 includes a fixed main wing cover 31 and two movable wings 32. The top of the fixed main wing cover 31 is fixedly connected to the telescopic rod 1. The two movable wings 32 are symmetrically disposed on both sides of the fixed main wing cover 31 and can rotate around a pivot 33 disposed at the lower end of the fixed main wing cover 31, so that the windproof cover 3 can switch between an unfolded state with a flat bottom surface and a folded state with a right-angled bottom surface.
[0028] The telescopic pole 1 allows the operator to precisely place the probe 2 onto the ground or wall to be inspected without bending over. The acoustic vibration sensor 22 inside the probe 2 acts as the device's "ear," responsible for picking up acoustic signals generated by leaks in underground pipes. The windproof cover 3's primary function is not wind protection, but rather to form a stable acoustic coupling cavity with the surrounding surface. Like a "listening tube," it sits on the detection surface, effectively isolating environmental noise (such as wind noise or distant vehicle noise), allowing the sensor to focus on collecting the weak leak sound waves transmitted through the soil or wall.
[0029] The wind shield 3 includes a fixed main wing shield 31 and two movable wings 32. The fixed main wing shield 31 is directly fixed to the telescopic rod 1 to ensure a stable connection with the probe 2. The movable design of the two movable wings 32 is the basis for the entire solution to adapt to different scenarios. The movable wings 32 can rotate around the pivot 33 at the lower end of the fixed main wing shield 31. The existence of the pivot 33 restricts the movement of the movable wings 32 to a certain trajectory, ensuring the stability and reliability of its movement and avoiding random swinging.
[0030] Under the action of the torsion spring 34 (or other elastic element), the two movable wing covers 32 fully extend outward, forming a complete and continuous horizontal plane with the bottom surface of the fixed main wing cover 31. This allows the operator to smoothly place the windproof cover 3 in this state on the ground. The large area of planar contact ensures a tight seal with the ground, effectively suppressing noise and clearly collecting leakage signals. When the device is pushed towards a corner, the wall and ground apply pressure to the two movable wing covers 32, overcoming the spring force of the torsion spring 34, forcing them to fold inward and upward around the pivot 33, ultimately fitting tightly against both sides of the fixed main wing cover 31. At this point, the bottom surface of the fixed main wing cover 31 and the outer surface of the folded movable wing covers 32 together form a perfect 90-degree right-angle concave surface. This shape fits perfectly with the junction of the corner and the ground, achieving stable coupling with two vertical planes simultaneously, ensuring high-quality acoustic signals can be collected even in areas prone to leakage.
[0031] In summary, through a simple combination of a fixed main wing cover 31 and a rotatable movable wing cover 32, when the operator pushes forward, this simple linear motion is transformed into a shape change where the windshield 3 folds inward, thus adapting to two very different testing environments: "flat ground" and "vertical corner".
[0032] The telescopic rod 1 is an adjustable-length sleeve structure with a handle 11 at the top, which is on the same plane as the windproof cover 3. The sensor is electrically connected to the external host 4 via an antenna or wired connection, and the host 4 is wired to an earphone 5. The probe 2 includes a housing 21, within which an acoustic vibration sensor 22 is built.
[0033] The telescopic pole 1 is not merely a simple extension handle; its adjustable length is crucial. This allows the operator to finely adjust the height and reach of the probe 2 without moving their body, enabling precise and vertical placement of the wind shield 3 at the target point, whether on flat ground or in a corner, when inspecting different locations such as distant locations, near walls, or ditches. The handle 11 provides a convenient grip for the operator, ensuring that the bottom surface (the inspection surface) of the wind shield 3 faces downwards when the operator naturally lifts it, facilitating intuitive alignment. More importantly, when it is necessary to push the probe 2 towards the wall to fold the movable wing cover 32, since the handle 11 and the windproof cover 3 are on the same plane, when the operator pushes along the axial direction of the telescopic rod 1, the handle 11 is first perpendicular to the wall joint, and then the windproof cover 3 is also perpendicular to the wall joint. In this way, the bottom edge of the fixed main wing cover 31 is aligned with the wall joint, and then the two movable wings 32 can be folded up simultaneously. This ensures that the thrust can efficiently and directly overcome the spring force, so that the wing cover can be folded up smoothly, without causing the mechanism to jam or the probe 2 to tilt due to directional deviation.
[0034] In the entire workflow of the water leakage detection device, the acoustic vibration sensor 22 is the starting point of the signal. Enclosed within the housing 21 of the probe 2, it is protected from impacts and interference. Whether the windproof cover 3 is in its unfolded state adapted to flat ground or folded up against a wall corner, its core purpose is to create an optimal sound acquisition environment for the sensor, ensuring the capture of the clearest and most accurate leakage vibration signal. After the sensor converts the acquired acoustic vibration into an electrical signal, it needs to be transmitted to the host unit 4 for processing via a connection line. This connection typically uses a stable and reliable wired method to ensure no signal delay, no loss, and strong anti-interference capability, making it the preferred choice for professional detection. Of course, a wireless method can also be used for greater operational freedom. After amplifying and filtering the signal, the host unit 4 transmits the sound to the operator through a wired headset 5. This direct wired audio output ensures no delay and high fidelity, allowing the operator to concentrate fully on listening to the subtle characteristics of the sound, thereby accurately determining the location of the leak.
[0035] Please see Figure 6 The fixed main wing cover 31 has a receiving hole 311 at its arc-shaped top, which is adapted to and snapped into the housing 21. The fixed main wing cover 31 is fan-shaped, and the included angle of the fan shape at the bottom is α; when the two movable wing covers 32 are in the fully folded state, the included angle α formed by them and the fixed main wing cover 31 at the bottom is 90 degrees.
[0036] The fixed main wing cover 31 serves as the structural foundation of the entire windproof cover 3. Its top has a receiving hole 311 that fits the probe 2 housing 21, achieving a secure connection through a snap-fit mechanism. This not only ensures the stability of the mechanical connection but also provides an ideal acoustic coupling path for efficient and low-loss transmission of vibration signals from the windproof cover 3 to the sensor. The fixed main wing cover 31 itself is designed as a fan-shaped structure, with its bottom fan-shaped angle 'a' being a core design parameter. It works in conjunction with the retractable movable wing covers 32 on both sides: when the movable wing covers 32 are fully retracted, their retracted angle, together with the fixed main wing cover 31's angle 'a', forms a precise 90-degree bottom angle 'b'. This ensures that when detecting the critical scenario of a wall edge, the device can automatically form a right-angle cavity that fits perfectly with the wall corner, achieving seamless fit, precise alignment, and high-quality signal acquisition.
[0037] The cross-section of the fixed main wing cover 31 is U-shaped, and a notched ring 312 is provided at both free ends of the U-shaped opening. A rotating shaft 33 is provided inside each notched ring 312.
[0038] The wind shield 3 is a semi-circular shell. Specifically, the cross-section of the fixed main wing 31 is U-shaped, forming the supporting frame of the entire wind shield 3. More importantly, notched ring structures are set at the free ends on both sides of the U-shaped opening. These notched rings 312 are essentially bearing seats. Each notched ring 312 has a non-rotating rotating shaft 33 installed inside, which together form the rotation center of the movable wing 32. The notched part of the notched ring 312 corresponds to the ground, increasing the contact surface with the ground. Thus, when the entire wind shield 3 is placed on the ground, this part can serve as the main load-bearing part, ensuring the stability of the wind shield 3 when placed vertically. When the probe 2 needs to be pushed against the wall, the thrust on the movable wing 32 is evenly transmitted to the fixed main wing 31 through the rotating shaft 33. The U-shaped structure provides sufficient bending strength. At the same time, the limiting effect of the notched rings 312 ensures that the rotating shaft 33 will not come out under force, so that the movable wing 32 can only fold smoothly along the preset rotation trajectory. This robust rotating connection mechanism ensures the reliability and repeatability of the windproof cover 3 when switching between different working states, and is the core structural guarantee for realizing the conversion from planar detection to corner detection mode.
[0039] Each movable wing cover 32 is also configured as a fan shape, with one side fixed to the fixed main wing cover 31 and the other side being a free side with a rectangular frame 321. A flexible cover surface 322 is provided between the two. The rectangular frame 321 is fixedly connected to two rotating rings 324. Each rotating ring 324 is sleeved on a rotating shaft 33. A torsion spring 34 is provided between the two rotating rings 324 on the same side of the two movable wing covers 32 to provide an elastic force that tends to unfold the movable wing cover 32.
[0040] The fan-shaped design of the movable wing cover 32 allows it to form a complete semi-circular cover together with the fixed main wing cover 31 when unfolded, and it can fit tightly against both sides of the fixed main wing cover 31 when folded. One side of the movable wing cover 32 is fixed to the side of the fixed main wing cover 31, and the other side is a free side with a rectangular frame 321. Through the rectangular frame 321 and two rotating rings 324 installed on one side of the rectangular frame 321, it can rotate around the rotating axis 33, thereby realizing the unfolding and folding. The rectangular frame 321 forms the rigid frame on the lower side of the movable wing cover 32. It not only determines the overall shape and strength of the component, but is also the core component for installing the rotating rings 324 and transmitting force. The flexible cover surface 322 (such as tarpaulin 323) covering the fan-shaped frame ensures that the cover can form a sealed acoustic cavity in any form, effectively isolating external noise.
[0041] Most importantly, the torsion spring 34 connects the left and right rectangular frames 321. The torsion spring 34 is sleeved on the rotating shaft 33, with its two free ends located on two rotating rings 324 on the same side of the movable wing covers 32 on both sides. It provides the elastic force that tends to unfold the movable wing covers 32. During testing on a flat surface, the spring's preload automatically fully unfolds the two movable wing covers, keeping the bottom surface level. When corner testing is required, the operator applies a thrust that overcomes the spring force, forcing the movable wing covers 32 to fold inward synchronously until a right angle is formed. Once the thrust is removed, the spring force drives the movable wing covers 32 to automatically return to the unfolded state.
[0042] The flexible cover 322 includes several equally spaced U-shaped reinforcing frames 3231. Adjacent U-shaped reinforcing frames 3231 are connected by a tarpaulin 323. The U-shaped reinforcing frames 3231 are also connected to the rectangular frame 321 or one side of the fixed main wing cover 31 by the tarpaulin 323. A groove 313 is provided on the outer wall of the notched ring 312, and a sliding foot 3232 is provided at the free end of the U-shaped reinforcing frame 3231. The sliding foot 3232 of each U-shaped reinforcing frame 3231 slides along the groove 313.
[0043] The flexible cover 322 of the movable wing cover 32 is not simply a piece of soft material, but a composite structure composed of a U-shaped reinforcing frame 3231 and a canopy 323. The evenly spaced U-shaped frames provide the necessary longitudinal support for the entire cover, preventing uncontrolled wrinkles or collapses during operation or folding. This ensures that the cover maintains a pre-set smooth surface conducive to sound wave transmission, whether in the unfolded or folded state. The canopy 323 between the U-shaped frames provides the necessary flexibility, allowing the entire structure to bend flexibly over a wide range. More importantly, the ends of the U-shaped frames are connected to the rectangular frame 321, and the inner U-shaped frames are connected to the fixed main wing cover 31, also via the canopy 323. This design makes the entire movable wing cover 32 a strong yet flexible whole, allowing power to be evenly transmitted from the rectangular frame 321 through the frame to the entire cover, achieving coordinated deformation.
[0044] The groove 313 serves as a guide mechanism for the sliding feet 3232 of the U-shaped frame. It is located on the outer wall of the notched ring 312 and cooperates with the sliding feet 3232 installed at the free end of the U-shaped frame, providing a trajectory constraint for the movement of the frame. When the movable wing cover 32 is folded or unfolded, the sliding feet 3232 of each U-shaped frame slide along this preset groove 313. This not only ensures the synchronization of the movement of all frames and avoids mutual jamming or twisting, but also allows the tarpaulin 323 covering it to be folded or unfolded flat and orderly, greatly reducing mechanical fatigue and wear caused by disordered wrinkles, thereby extending its service life.
[0045] The rectangular frame 321 for fixing the main wing plate and the movable wing cover 32, as well as the U-shaped reinforcing frame 3231, are made of rigid plastic or metal; the tarpaulin 323 is made of flexible rubber or waterproof canvas.
[0046] The fixed main wing plate, rectangular frame 321, and U-shaped skeleton serve as the core load-bearing structure of the entire windshield 3. They are made of rigid plastics (such as ABS and nylon) or metals (such as aluminum alloy) to ensure sufficient strength, rigidity, and dimensional stability. During operation, when the operator pushes the probe 2 against a corner to fold the movable wing 32, the fixed main wing plate must withstand the thrust from the telescopic rod 1; the rectangular frame 321 and U-shaped skeleton must resist the compressive force from the wall or ground on the movable wing 32 and ensure that the pivot 33 and torsion spring 34 can accurately return to their original positions. This robust frame, constructed of rigid materials, ensures reliable repeatability of mechanical actions, preventing switching failures or gaps caused by component deformation, thus protecting the acoustic seal.
[0047] Conversely, the tarpaulin 323, serving as a flexible sealing layer covering the rigid frame, prioritizes material selection for flexibility, durability, and acoustic properties. The flexible rubber or waterproof canvas can smoothly bend and stretch with the folding and unfolding of the frame without cracking or permanent deformation. More importantly, these dense, flexible materials effectively isolate environmental noise such as wind noise, forming a sealed acoustic cavity with the rigid components. Whether the device is unfolded on the ground or folded in a corner, this ensures that vibrations from leaks are efficiently directed to the sensor without being contaminated by external noise.
[0048] Reference Figures 1-5 The leakage detection device automatically adjusts its workflow according to different detection scenarios (flat ground or wall corner), as detailed below:
[0049] 1. Initial working condition on flat ground:
[0050] When performing routine testing on flat, open ground, the operator holds the equipment and places the bottom surface of the windproof cover 3 at the end of probe 2 in contact with the ground. At this time, under the preload of the torsion spring 34, the movable wings 32 on both sides of the windproof cover 3 remain fully deployed. Together with the fixed main wing 31 in the middle, they form a complete semi-circular windproof cover 3 with a flat bottom. This complete cover is stably fixed to the ground like a "bell jar," effectively isolating environmental noise. If there is a leak in the underground pipe, the vibration generated by the leakage sound waves will be transmitted through the soil to the ground, and then through this tightly fitted cover, efficiently transmitted to the high-sensitivity sound sensor on top. The sensor converts the mechanical vibration into an electrical signal. The signal is amplified and filtered by the circuit inside the host 4, and finally the sound information is transmitted to the operator through the headphones 5 and the visual display screen. By analyzing the sound characteristics (such as intensity and continuity), the operator can determine whether there is a leak underground.
[0051] 2. Corner self-adaptation and detection status:
[0052] When inspecting the right-angle corner where the wall meets the floor (a high-risk area for leaks), the operator simply moves probe 2 to the corner, aligning the bottom edge of the fixed main wing cover 31 of the windproof cover 3 with the gap in the corner. Then, the operator pushes probe 2 forward along the wall gap. At this time, the wall and the floor simultaneously apply pressure to the movable wings 32 on both sides. This thrust overcomes the preload of the torsion spring 34. Under the action of the thrust, the movable wings 32 on both sides will open like two doors along the fixed main wing cover 31. The bottom pivot 33 folds inward and upward in sync. The U-shaped reinforcing frame 3231 inside the movable wing cover 32 ensures that the folding process is smooth and orderly. Finally, they will fit completely against the two sides of the fixed main wing plate. At this time, the shape of the wind shield 3 changes from a semi-circle with a flat bottom surface to a 90-degree right-angle fan shape that fits perfectly against the corner of the wall. This new profile is formed by the fixed main wing cover and the folded movable wing cover 32, ensuring seamless and stable coupling with both vertical planes.
[0053] 3. Corner signal acquisition:
[0054] After a stable coupling is established, leakage sound waves transmitted from either the wall or the ground can be effectively collected and conducted to the sensor at the top of the windproof cover 3. By avoiding contact gaps caused by shape mismatch, environmental noise is suppressed to the greatest extent, allowing the sensor to acquire pure, high-fidelity leakage signals. Subsequent signal processing and judgment are the same as for detection on flat ground. This achieves accurate and reliable leakage detection at the critical corner of the wall.
[0055] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.
Claims
1. A water leakage detection device, comprising a telescopic rod (1) and a probe (2) disposed at the end of the telescopic rod (1), wherein a windproof cover (3) is disposed outside the probe (2), characterized in that: The windproof cover (3) includes a fixed main wing cover (31) and two movable wing covers (32); the top of the fixed main wing cover (31) is fixedly connected to the telescopic rod (1); the two movable wing covers (32) are symmetrically arranged on both sides of the fixed main wing cover (31) and can rotate around the pivot (33) located at the lower end of the fixed main wing cover (31), so that the windproof cover (3) can switch between an unfolded state with a flat bottom surface and a folded state with a right-angled bottom surface.
2. The leakage detection device according to claim 1, characterized in that: The probe (2) includes a housing (21), in which an acoustic vibration sensor (22) is built. The fixed main wing cover (31) has a receiving hole (311) on its arc-shaped top, and the receiving hole (311) is adapted to and snapped into the housing (21).
3. The leakage detection device according to claim 1 or 2, characterized in that: The fixed main wing cover (31) is fan-shaped, and the included angle of the fan shape at the bottom is α; When the two movable wing covers (32) are in a fully folded state, the bottom angle b formed by the angle a between them and the fixed main wing cover (31) is 90 degrees.
4. The leakage detection device according to claim 3, characterized in that: The fixed main wing cover (31) has a U-shaped cross section, and a notched ring (312) is provided at both free ends of the U-shaped opening. A rotating shaft (33) is provided inside each notched ring (312).
5. The leakage detection device according to claim 4, characterized in that: Each of the aforementioned movable wing covers (32) is also configured as a fan shape, with one side fixed to the fixed main wing cover (31), and the other side being a free side with a rectangular frame (321), and a flexible cover surface (322) provided between the two. The rectangular frame (321) is fixedly connected to two rotating rings (324), each of the rotating rings (324) being sleeved on a rotating shaft (33). A torsion spring (34) is provided between the two rotating rings (324) on the same side of the two movable wing covers (32) to provide an elastic force that tends to unfold the movable wing cover (32).
6. The leakage detection device according to claim 5, characterized in that: The flexible cover (322) includes several U-shaped reinforcing frames (3221) with equal spacing. Adjacent U-shaped reinforcing frames (3221) are connected by tarpaulins (323). The U-shaped reinforcing frames (3221) are connected to the rectangular frame (321) or one side of the fixed main wing cover (31) by tarpaulins (323).
7. The leakage detection device according to claim 6, characterized in that: A groove (313) is provided on the outer wall of the notched ring (312), and a sliding foot (3222) is provided on the free end of the U-shaped reinforcing frame (3221). The sliding foot (3222) of each U-shaped reinforcing frame (3221) slides along the groove (313).
8. The leakage detection device according to claim 7, characterized in that: The rectangular frame (321) of the fixed main wing cover (31) and the movable wing cover (32) and the U-shaped reinforcing frame (3221) are made of rigid plastic or metal; the tarpaulin (323) is made of flexible rubber or waterproof canvas.
9. The leakage detection device according to claim 1, characterized in that: The telescopic rod (1) is an adjustable-length sleeve structure, and a handle (11) is provided at the top. The handle (11) and the windproof cover (3) are on the same plane.
10. The leakage detection device according to claim 2, characterized in that: The acoustic vibration sensor (22) is electrically connected to an external host (4) via an antenna or wired connection. The host (4) is wired to an earphone (5).