Building pipe leakage detection device

Abstract

The utility model relates to detection device technical field especially relates to building pipeline leakage detection device, including pipeline, the pipeline outside in proper order encircle and carry out the adaptive positioning leakage detection one -level pipe clamp leakage detection subassembly, two -level pipe clamp leakage detection subassembly and three -level pipe clamp leakage detection subassembly, one -level pipe clamp leakage detection subassembly, two -level pipe clamp leakage detection subassembly and three -level pipe clamp leakage detection subassembly both sides center all are equipped with the auxiliary rod that guides the adjustment along the pipe diameter traction, through one -level to three -level pipe clamp subassembly through the auxiliary rod and spring traction rope form distributed detection, when detecting, three -level assembly synchronous along the pipeline axial movement, counterweight bending plate and strong magnetic plate pass through spring column dynamic adjustment gravity center, offset when the lateral deflection moment of long pipeline detection, make overall device gravity always close to pipeline axis, reduce overall error degree, ultrasonic interaction module combines infrared camera, realize sound -light multimode data acquisition, improve overall leak point positioning accuracy.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a building pipeline leakage detection device. Background Technology

[0002] Pipeline leakage refers to the phenomenon of fluid (water or other media) overflowing or seeping into a pipeline system through abnormal means such as material defects, loose joints, or structural damage. It is concentrated at pipe joints, inspection wells, branch pipe connections, and areas with damaged pipe walls. It is commonly caused by aging of plastic pipes, corrosion of metal pipes, or sealing failure due to construction defects. Leakage detection devices are used for routine maintenance of building pipelines.

[0003] Traditional detection devices typically consist of a mechanical pressure gauge, a mounting bracket, and a detection module. Their working principle involves locating leaks by observing the pressure drop after pressurization or by manually listening to the sound of water leakage. During detection, they are placed directly on or attached to the outside of the pipe. As the overall pipe length increases, the center of gravity may shift, increasing the detection error. Utility Model Content

[0004] To overcome the limitations of traditional detection devices, which are placed directly on or adsorbed onto the outside of the pipe during detection, and which tend to shift the center of gravity as the pipe grows longer, increasing detection errors, this invention provides a building pipe leakage detection device.

[0005] The technical solution is as follows: A building pipeline leakage detection device includes a pipeline, a primary pipe clamp leakage detection component, a secondary pipe clamp leakage detection component, and a tertiary pipe clamp leakage detection component that are sequentially wrapped around the outside of the pipeline for adaptive positioning and leakage detection. Each of the primary, secondary, and tertiary pipe clamp leakage detection components has an auxiliary rod on the center of both sides to guide and adjust the traction along the pipe diameter. Both ends of the primary pipe clamp leakage detection component are equipped with an adapter pipe adjustment module that connects to the secondary and tertiary pipe clamp leakage detection components for telescopic adjustment to adapt to the pipe diameter.

[0006] Furthermore, the primary pipe clamp leakage detection component, the secondary pipe clamp leakage detection component, and the tertiary pipe clamp leakage detection component are configured with the same structure. The primary pipe clamp leakage detection component includes a ring plate, with an antenna module symmetrically arranged above the ring plate and an ultrasonic interactive module electrically connected to the antenna module symmetrically arranged at the bottom of the ring plate. Mounting seats are fixed to the center of both sides of the ring plate, and an adjustment groove for adjusting the auxiliary rod is opened in the center of the mounting seat.

[0007] Furthermore, a telescopic rod is connected to the bottom center of the ring plate, and an adjusting sleeve is fitted on the telescopic rod. A manual / automatic module is provided between the adjusting sleeve and the telescopic rod. The manual / automatic module includes an adjusting bolt sleeve, a rotator, and an angle sensor. A first horizontal tube is connected to the end of the telescopic rod away from the adjusting sleeve. Both ends of the first horizontal tube are provided with first rollers. Shock-absorbing grooves are circumferentially opened on the first rollers. A first lithium battery pack is provided on the ring plate. The first lithium battery pack is electrically connected to the rotator. A cable for driving the first rollers to rotate is provided outside the first lithium battery pack.

[0008] Furthermore, infrared cameras electrically connected to the antenna module are symmetrically connected to both sides of the ring plate, and the ultrasonic interaction module includes an ultrasonic transmitter and an ultrasonic receiver.

[0009] Furthermore, a stabilizing block is fixed to one end of the auxiliary rod, a counterweight plate is connected to the end of the stabilizing block away from the auxiliary rod, an adjusting shaft is passed through the end of the auxiliary rod away from the stabilizing block, a second lithium battery pack is connected to the outer end of the adjusting shaft, the second lithium battery pack drives the adjusting shaft to drive the adjustment operation of the auxiliary rod, and a spring traction rope connected to the adjusting tube sleeve is connected to the middle position of the auxiliary rod.

[0010] Furthermore, a spring column is vertically connected to the middle of the counterweight bending plate. A spring rubber damper is installed inside the spring column. A guide column is connected to the lower end of the spring column. A second horizontal tube is connected to the lower end of the guide column. Both ends of the second horizontal tube are fitted with second rollers.

[0011] Furthermore, strong magnetic plates are vertically installed at both ends of the counterweight bending plate, and a third lithium battery pack electrically connected to the strong magnetic plates is installed on the counterweight bending plate. A moisture-proof cover is installed on the outside of the counterweight bending plate, and an indicator light is connected to the middle of the third lithium battery pack.

[0012] Furthermore, the adapter tube adjustment module includes a guide telescopic tube, which is set in two sets. A tightening sleeve is connected in the middle of the two sets of guide telescopic tubes. A first tightening bolt is provided between the tightening sleeve and the guide telescopic tube. A fixing tube is sleeved on the end of the guide telescopic tube away from the first tightening bolt, which is fixed to the first-level pipe clamp leakage detection component, the second-level pipe clamp leakage detection component and the third-level pipe clamp leakage detection component. A second tightening bolt is provided between the fixing tube and the guide telescopic tube.

[0013] The beneficial effects are: This utility model uses a first- to third-level pipe clamp assembly to form a distributed detection through an auxiliary rod and a spring traction rope. During detection, the three-level assembly moves synchronously along the pipe axis. The counterweight bend plate and the strong magnetic plate dynamically adjust the center of gravity through the spring column to counteract the lateral offset torque during long pipe detection, so that the center of gravity of the whole device is always close to the pipe axis, reducing the overall error.

[0014] The adapter tube adjustment module adopts a guide telescopic tube and tightening bolt structure, which can quickly adapt to the pipe diameter and expand the adjustment range to 3 times that of traditional devices; the manual and automatic modules support both manual fine-tuning and electric drive modes.

[0015] The ultrasonic interactive module, combined with an infrared camera, enables multimodal audio-visual data acquisition, improving the overall accuracy of leak location. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the building pipe leakage detection device of this utility model;

[0017] Figure 2 This is a schematic diagram of the primary pipe clamp leakage detection component of this utility model;

[0018] Figure 3 This is another schematic diagram of the primary pipe clamp leakage detection component of this utility model.

[0019] Figure 4 This is a schematic diagram of the auxiliary rod of this utility model;

[0020] Figure 5 This is a schematic diagram of the adapter tube adjustment module of this utility model.

[0021] In the attached diagram, the following are the reference numerals: 1. Pipe; 2. Primary pipe clamp leakage detection component; 3. Secondary pipe clamp leakage detection component; 4. Tertiary pipe clamp leakage detection component; 5. Auxiliary rod; 6. Adapter pipe adjustment module; 201. Ring plate; 202. Antenna module; 203. Mounting base; 204. Adjustment groove; 205. Ultrasonic interactive module; 206. First lithium battery pack; 207. Cable; 208. Telescopic rod; 209. Adjustment sleeve; 210. Manual / automatic module; 211. First horizontal pipe; 212. First roller; 213. Reduction... Vibration groove; 214, Infrared camera; 501, Counterweight bending plate; 502, Adjusting shaft; 503, Second lithium battery pack; 504, Stabilizing block; 505, Strong magnetic plate; 506, Moisture-proof sleeve; 507, Third lithium battery pack; 508, Indicator light; 509, Spring column; 510, Guide column; 511, Second horizontal tube; 512, Second roller; 513, Spring traction rope; 601, Fixing tube; 602, Guide telescopic tube; 603, Tightening sleeve; 604, First loosening bolt; 605, Second loosening bolt. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] Hazards and Detection Needs of Building Pipe Leaks

[0024] Building piping systems, serving as the carriers of water supply, drainage, and heating functions, are core infrastructure for maintaining the normal operation of buildings. However, due to factors such as material aging, construction defects, environmental corrosion, or mechanical stress, piping systems often experience leakage. Leaks not only waste resources (for example, globally, leakage can result in a loss of 346 billion cubic meters of water annually, accounting for 20%-30% of total water supply), but also trigger the following chain of problems:

[0025] Structural safety risks: Long-term water seepage can lead to foundation settlement, wall corrosion, and even building collapse (such as the ground collapse accident caused by drainage pipe leakage in a subway station in 2021).

[0026] Health and hygiene risks: Sewage leakage can contaminate groundwater, breed bacteria (such as Legionella), and threaten public health;

[0027] Economic losses: Leaks cause water bills to surge and maintenance costs to rise. Commercial buildings that have to close due to leaks can suffer daily losses of tens of thousands of yuan.

[0028] Therefore, leak detection has become a rigid requirement for building operation and maintenance. According to the International Water Association (IWA) standards, pipe leak detection must meet the following core indicators:

[0029] Positioning accuracy: error less than 0.5 meters (complex pipe networks) to 5 centimeters (local areas);

[0030] Response time: The delay from the occurrence of leakage to alarm feedback is less than 10 seconds;

[0031] Environmental adaptability: Compatible with various pipe materials such as metal, PVC, and PE; withstands temperatures from -20℃ to 80℃.

[0032] Operation and maintenance costs: The detection device has a lifespan of more than 5 years, and the cost of deployment at a single point is less than 500 yuan.

[0033] Overview of Traditional Leakage Detection Techniques

[0034] Traditional detection technologies mainly rely on human experience and basic sensing equipment, and their technical approaches can be divided into the following categories:

[0035] Mechanical pressure testing method

[0036] Device structure: It consists of a mechanical pressure gauge (such as a Bourdon tube pressure gauge), a manual booster pump, and pipe clamps.

[0037] Working principle: After closing the pipeline valve, high-pressure fluid is injected, and leakage is judged by observing the decrease in the pressure gauge reading. If the pressure drops by more than 15% within 10 minutes, a leak is determined to exist.

[0038] Typical defects:

[0039] It is only applicable to short straight pipe sections and cannot locate specific leak points;

[0040] Manual operation is time-consuming (2-4 hours per test), and pressurization may exacerbate pipeline damage.

[0041] Acoustic detection method

[0042] Device structure: Based on piezoelectric ceramic sensor (such as PAC R15α), signal amplifier and spectrum analyzer.

[0043] Working principle: The leakage point generates a 20-50kHz high-frequency sound wave due to fluid jet. The signal is captured by a sensor placed on the outer wall of the pipe, and the location of the leakage point is calculated using the time difference of location (TDOA) method.

[0044] Typical defects:

[0045] Environmental noise (such as pump vibration) interference can cause a false alarm rate as high as 30%.

[0046] The sensor needs to fit closely to the pipe wall, making it difficult to deploy on curved or insulated pipes.

[0047] Infrared thermal imaging

[0048] Device structure: A handheld thermal imager equipped with an uncooled infrared detector (such as FLIR T540).

[0049] Working principle: Leakage causes abnormal temperature distribution on the pipe surface. The temperature difference is captured by a thermal imager (sensitivity of about 50mK) and a thermal map is generated.

[0050] Typical defects:

[0051] It is only suitable for scenarios with significant temperature differences (such as heating pipes), and its detection effect is poor for water pipes at normal temperature.

[0052] Unable to penetrate the pipe insulation layer, limiting the depth of detection.

[0053] Humidity sensing method

[0054] Device structure: A fixed-point monitoring device based on a capacitive humidity sensor (such as Sensirion SHT45).

[0055] Working principle: Sensors are installed at leak-prone points in the pipeline (such as flange interfaces). When the humidity exceeds a threshold (such as 85% RH), an alarm is triggered.

[0056] Typical defects:

[0057] Humidity changes lag behind actual leakage, with a response delay of up to several hours.

[0058] High humidity environments (such as basements) are prone to triggering false alarms.

[0059] Analysis of the limitations of existing technologies

[0060] Although the above technologies have been used for many years, their structural design and working principle still have significant defects, which restrict the large-scale improvement of detection efficiency:

[0061] Insufficient structural adaptability

[0062] Rigid mounting structure: Traditional sensors mostly use bolt fixing or magnetic brackets, which are difficult to adapt to different pipe diameters (such as DN20 to DN600) or curved pipes, resulting in a detection blind zone of more than 30%.

[0063] Center of gravity shift problem: During long-distance detection, the device shifts due to its own weight or external forces, and the positioning error increases to 1-3 meters (experimental data are shown in the table below);

[0064] Single sensing mode

[0065] Data dimension missing: A single sensor (such as only sound waves or humidity) cannot distinguish between leakage signals and environmental interference, and the false alarm rate is generally higher than 20%;

[0066] Sensitivity limitations: For example, acoustic sensors are not sensitive to minute leaks (<0.1L / min), and humidity sensors respond slowly in enclosed spaces.

[0067] like Figure 1 - Figure 5 As shown, the building pipe 1 leakage detection device includes a pipe 1, a primary pipe clamp leakage detection component 2, a secondary pipe clamp leakage detection component 3, and a tertiary pipe clamp leakage detection component 4, which are sequentially arranged around the outside of the pipe 1 for adaptation and positioning leakage detection. Each of the primary pipe clamp leakage detection component 2, the secondary pipe clamp leakage detection component 3, and the tertiary pipe clamp leakage detection component 4 has an auxiliary rod 5 on the center of both sides to guide and adjust the traction along the pipe diameter. Both ends of the primary pipe clamp leakage detection component 2 are provided with an adapter pipe adjustment module 6, which is connected to the secondary pipe clamp leakage detection component 3 and the tertiary pipe clamp leakage detection component 4 for telescopic adjustment to adapt to the pipe diameter.

[0068] Please see Figure 2 - Figure 4In this embodiment, the primary pipe clamp leakage detection component 2, the secondary pipe clamp leakage detection component 3, and the tertiary pipe clamp leakage detection component 4 are configured with the same structure. The primary pipe clamp leakage detection component 2 includes a ring plate 201. An antenna module 202 is symmetrically arranged above the ring plate 201. An ultrasonic interactive module 205 electrically connected to the antenna module 202 is symmetrically arranged at the bottom of the ring plate 201. A mounting base 203 is fixedly connected to the center of both sides of the ring plate 201. An adjustment groove 204 for adjusting the auxiliary rod 5 is opened at the center of the mounting base 203. A telescopic rod 208 is connected to the center of the bottom of the ring plate 201. An adjustment sleeve 209 is fitted on the telescopic rod 208. A manual / automatic module 210 is provided between the adjusting sleeve 209 and the telescopic rod 208. The manual / automatic module 210 includes an adjusting bolt sleeve, a rotator, and an angle sensor. The end of the telescopic rod 208 away from the adjusting sleeve 209 is connected to a first horizontal tube 211. Both ends of the first horizontal tube 211 are provided with first rollers 212. The first rollers 212 are provided with shock-absorbing grooves 213 circumferentially. The ring plate 201 is provided with a first lithium battery pack 206. The first lithium battery pack 206 is electrically connected to the rotator. The first lithium battery pack 206 is provided with a cable 207 that drives the first rollers 212 to rotate. The shock-absorbing grooves 213 and the spring rubber damper can absorb the vibration noise of the pipe 1.

[0069] Please see Figure 3 - Figure 4 In this embodiment, infrared cameras 214 electrically connected to antenna module 202 are symmetrically connected to both sides of ring plate 201. Ultrasonic interactive module 205 includes ultrasonic transmitter and ultrasonic receiver. A stabilizing block 504 is fixed to one end of auxiliary rod 5. A counterweight bending plate 501 is connected to the end of stabilizing block 504 away from auxiliary rod 5. An adjusting shaft 502 is passed through the end of auxiliary rod 5 away from stabilizing block 504. A second lithium battery pack 503 is connected to the outer end of adjusting shaft 502. The second lithium battery pack 503 drives adjusting shaft 502 to drive adjusting operation of auxiliary rod 5. A spring traction rope 513 connected to adjusting sleeve 209 is connected to the middle position of auxiliary rod 5.

[0070] Please see Figure 4 - Figure 5In this embodiment, a spring column 509 is vertically connected to the middle of the counterweight bending plate 501. A spring rubber damper is installed inside the spring column 509. A guide column 510 is connected to the lower end of the spring column 509. A second horizontal tube 511 is connected to the lower end of the guide column 510. Second rollers 512 are fitted at both ends of the second horizontal tube 511. Strong magnetic plates 505 are vertically installed at both ends of the counterweight bending plate 501. A third lithium battery pack 507, electrically connected to the strong magnetic plates 505, is installed on the counterweight bending plate 501. A moisture-proof sleeve 506 is fitted over the counterweight bending plate 501. The middle of the third lithium battery pack 507... The adapter tube adjustment module 6 is connected to an indicator light 508 and includes a guide telescopic tube 602. The guide telescopic tube 602 is configured in two sets, with a tightening sleeve 603 connected in the middle of the two sets of guide telescopic tubes 602. A first loosening bolt 604 is provided between the tightening sleeve 603 and the guide telescopic tube 602. A fixing tube 601 is sleeved on the end of the guide telescopic tube 602 away from the first loosening bolt 604, which is fixed to the first-level pipe clamp leakage detection component 2, the second-level pipe clamp leakage detection component 3 and the third-level pipe clamp leakage detection component 4. A second loosening bolt 605 is provided between the fixing tube 601 and the guide telescopic tube 602.

[0071] The primary, secondary, and tertiary pipe clamp assemblies are attached to the outer wall of pipe 1 by a strong magnetic plate 505. The adapter pipe adjustment module 6 is activated, and the guide telescopic pipe 602 expands and contracts according to the pipe diameter. The initial length is fixed by the first loosening bolt 604. The manual module 210 drives the telescopic rod 208 to extend, causing the first roller 212 to press against the pipe wall. The angle sensor provides real-time feedback on the contact angle. The level of the ring plate 201 is finely adjusted by adjusting the bolt sleeve. The spring traction rope 513 is linked with the auxiliary rod 5 to pull the counterweight bending plate 501 to balance the center of gravity of the device. The ultrasonic transmitter (model: Olympus V318-SU, center frequency 5MHz) emits a pulse signal, which is captured by the receiver after propagating through the wall of pipe 1.

[0072] The signal attenuation time difference is calculated using the Time-of-Flight (TOF) method. The leak point is located by combining the sound velocity of the pipe material (steel: 5850 m / s, PVC: 2300 m / s). The infrared camera 214 (model: FLIR A65, resolution 640×512) captures the local temperature gradient changes caused by the leak. After fusing with the ultrasonic data, a thermo-acoustic composite spectrum is generated. The antenna module 202 (model: Semtech SX1276, LoRa communication) uploads the detection data to the control terminal.

[0073] If a center of gravity shift is detected (angle sensor model: Murata SCA610-C28H1G, range ±90°), the system automatically activates the second roller 512 to adjust the counterweight position, and simultaneously tightens the sleeve 603 to dynamically compensate for the length of the telescopic tube. When the ultrasonic signal attenuation rate is >15% or the infrared temperature difference is >2℃, the indicator light 508 (model: OSRAM LR W5AM-JYKZ-24V) switches to red.

[0074] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A building pipe leakage detection device, comprising a pipe (1), characterized in that: It also includes a first-level pipe clamp leakage detection component (2), a second-level pipe clamp leakage detection component (3) and a third-level pipe clamp leakage detection component (4) that are sequentially wrapped around the outside of the pipe (1) for adaptation and positioning leakage detection. Each of the first-level pipe clamp leakage detection component (2), the second-level pipe clamp leakage detection component (3) and the third-level pipe clamp leakage detection component (4) has an auxiliary rod (5) on the center of both sides to guide and adjust the traction along the pipe diameter. Both ends of the first-level pipe clamp leakage detection component (2) are provided with an adapter pipe adjustment module (6) that is connected to the second-level pipe clamp leakage detection component (3) and the third-level pipe clamp leakage detection component (4) for telescopic adjustment to adapt to the pipe diameter.

2. The building pipe leakage detection device according to claim 1, characterized in that, The first-level pipe clamp leakage detection component (2), the second-level pipe clamp leakage detection component (3), and the third-level pipe clamp leakage detection component (4) are configured with the same structure. The first-level pipe clamp leakage detection component (2) includes a ring plate (201). An antenna module (202) is symmetrically arranged above the ring plate (201). An ultrasonic interactive module (205) electrically connected to the antenna module (202) is symmetrically arranged at the bottom of the ring plate (201). A mounting base (203) is fixedly connected to the center of both sides of the ring plate (201). An adjustment groove (204) for adjusting the auxiliary rod (5) is opened in the center of the mounting base (203).

3. The building pipe leakage detection device according to claim 2, characterized in that, A telescopic rod (208) is connected to the bottom center of the ring plate (201). An adjusting sleeve (209) is fitted on the telescopic rod (208). A manual / automatic module (210) is provided between the adjusting sleeve (209) and the telescopic rod (208). The manual / automatic module (210) includes an adjusting bolt sleeve, a rotator and an angle sensor. A first horizontal tube (211) is connected to the end of the telescopic rod (208) away from the adjusting sleeve (209). A first roller (212) is provided at both ends of the first horizontal tube (211). A shock-absorbing groove (213) is provided circumferentially on the first roller (212). A first lithium battery pack (206) is provided on the ring plate (201). The first lithium battery pack (206) is electrically connected to the rotator. A cable (207) for driving the first roller (212) to rotate is provided outside the first lithium battery pack (206).

4. The building pipe leakage detection device according to claim 2, characterized in that, The ring plate (201) is symmetrically connected to infrared cameras (214) that are electrically connected to the antenna module (202) on both sides. The ultrasonic interaction module (205) includes an ultrasonic transmitter and an ultrasonic receiver.

5. The building pipe leakage detection device according to claim 3, characterized in that, One end of the auxiliary rod (5) is fixed to a stabilizing block (504). The end of the stabilizing block (504) away from the auxiliary rod (5) is connected to a counterweight bending plate (501). The end of the auxiliary rod (5) away from the stabilizing block (504) is provided with an adjusting shaft (502). The outer end of the adjusting shaft (502) is connected to a second lithium battery pack (503). The second lithium battery pack (503) drives the adjusting shaft (502) to drive the auxiliary rod (5) to adjust. A spring traction rope (513) connected to the adjusting sleeve (209) is connected to the middle of the auxiliary rod (5).

6. The building pipeline leakage detection device according to claim 5, characterized in that, A spring column (509) is vertically connected to the middle of the counterweight bending plate (501). A spring rubber damper is installed inside the spring column (509). A guide column (510) is connected to the lower end of the spring column (509). A second horizontal tube (511) is connected to the lower end of the guide column (510). A second roller (512) is fitted at both ends of the second horizontal tube (511).

7. The building pipe leakage detection device according to claim 5, characterized in that, A strong magnetic plate (505) is vertically provided at both ends of the counterweight bending plate (501). A third lithium battery pack (507) is provided on the counterweight bending plate (501) and electrically connected to the strong magnetic plate (505). A moisture-proof cover (506) is provided on the outside of the counterweight bending plate (501). An indicator light (508) is connected to the middle of the third lithium battery pack (507).

8. The building pipe leakage detection device according to claim 1, characterized in that, The adapter tube adjustment module (6) includes a guide telescopic tube (602), which is provided in two sets. A tightening sleeve (603) is connected in the middle of the two sets of guide telescopic tubes (602). A first loosening bolt (604) is provided between the tightening sleeve (603) and the guide telescopic tube (602). A fixing tube (601) is provided at the end of the guide telescopic tube (602) away from the first loosening bolt (604) and is fixed to the first-level pipe clamp leakage detection component (2), the second-level pipe clamp leakage detection component (3) and the third-level pipe clamp leakage detection component (4). A second loosening bolt (605) is provided between the fixing tube (601) and the guide telescopic tube (602).

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