A civil construction waterproof leakage high-efficiency detection device and a use method thereof

Abstract

The application belongs to the technical field of water seepage detection in civil construction, and particularly relates to a high-efficiency water seepage detection device for civil construction and a use method thereof, which comprises an infrared thermal imager, an infrared lens and a handle. The infrared lens is aimed at the wall surface or roof surface which is exposed to the sun and cooled down at night, and the water seepage area is detected and identified due to the different temperature changes and different synchronization with the dry area caused by the different water thermal inertia. In large-area scanning, the entire roof, outer wall and floor are quickly scanned to generate a visual temperature distribution map. If the wind speed in the environment is high, the wind speed sensor detects that the wind speed exceeds the threshold value (such as > 3 m / s), a warning icon is displayed on the screen of the infrared thermal imager, at this time, the operator holds the handle 3 with one hand, presses it, and makes the windproof frame resist the detection surface (wall surface or roof surface). The windproof frame is pressed and abuts against the spring through the positioning block, and moves along the insertion rod, the hook is separated from the middle groove of the infrared thermal imager, and abuts against the warped plate in the continuous movement.

Description

Technical Field

[0001] This invention relates to the field of civil engineering construction seepage prevention detection technology, specifically a high-efficiency detection device for waterproofing and leakage in civil engineering construction and its usage method. Background Technology

[0002] Waterproofing and leakage detection devices for building projects are key tools for modern construction quality control, mainly used for real-time monitoring of potential leakage in critical areas such as building joints, basements, and roofs. With the increasing standards for green buildings and the aging of existing buildings, the problems of high false negative rates (approximately 30%) and slow response times of traditional manual inspections are becoming increasingly prominent.

[0003] Current technologies have the following shortcomings: Infrared thermal imagers have become a highly efficient non-contact diagnostic tool in the field of building waterproofing and leakage detection. Their working principle is based on detecting the difference in temperature field distribution on the surface of an object caused by infrared radiation. When there are water-permeable areas in a building structure, due to the heat absorption effect of water evaporation or the difference in thermal conductivity between the water and dry areas (for example, the thermal conductivity of concrete is 1.28 W / m·K and that of water is 0.6 W / m·K), the thermal inertia of the leaking area causes its cooling rate to be significantly slower than that of the surrounding dry area. This temperature difference manifests as abnormal "hot spots" (under active heating methods) or "cold spots" (under passive cooling methods) in thermal imaging. The specific characteristics depend on the heating method used during detection (such as pulsed thermal imaging or phase-locked loop thermal imaging) and the selection of the observation time window.

[0004] However, this technology faces significant environmental interference issues in outdoor building inspection. When wind speeds exceed 3-5 m / s, air convection greatly accelerates the heat exchange efficiency of the inspected surface, causing the temperature difference between the leaking area and the normal area to be rapidly homogenized. Experimental data shows that at a wind speed of 5 m / s, the convective heat transfer coefficient of the concrete surface can reach 25 W / m². 2 The temperature at K is more than three times that under calm conditions. This "wind-induced dilution effect" of the thermal signal can reduce the temperature difference between the leak point and the background to below 0.5°C, which is lower than the thermal sensitivity threshold of 0.8°C for most commercial infrared thermal imagers. Ultimately, this causes the minute leak features to be annihilated and rendered ineffective in the thermal spectrum. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a high-efficiency detection device for waterproofing and leakage in civil engineering construction and its usage method, which solves the problem that existing infrared thermal imagers are easily affected by wind speed during detection, leading to inaccurate detection results.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency detection device for waterproofing and leakage in civil construction, comprising an infrared thermal imager, an infrared lens, and a handle for easy gripping. A windproof frame for blocking wind is provided on the side of the infrared thermal imager. When the windproof frame is moved to the outside of the infrared lens, it can isolate the influence of ambient wind on the detection point and prevent the surface heat dissipation of the detection point from accelerating when the wind speed is too high, thus reducing the temperature difference.

[0007] Positioning blocks are provided on both sides of the windproof frame. A rod is inserted into the inside of the positioning block, and a spring is sleeved on the outside of the rod.

[0008] The windproof frame is equipped with hooks on the outside.

[0009] In some embodiments, the windproof frame has a rectangular frame structure, and the side ends of the windproof frame have two perforated slots for fitting the external structure of the infrared thermal imager.

[0010] In some embodiments, a base is provided on the side of the infrared thermal imager, and a rocker is rotatably mounted on the base. The base is used to provide rotational support for the rocker. The rocker is installed at an upward angle and is used to rest on the inner groove in the middle of the infrared thermal imager to fill the height difference, so that the hook can be quickly disengaged from the inner groove in the middle of the infrared thermal imager.

[0011] In some embodiments, a gasket is fitted around the outside of the infrared lens to prevent it from being damaged by accidental contact with a wall.

[0012] In some embodiments, a wind speed sensor for monitoring wind speed is integrated on the top of the infrared thermal imager. The reading of the wind speed sensor is displayed on the screen of the infrared thermal imager. When the wind speed exceeds a threshold, a warning icon is displayed on the screen of the infrared thermal imager.

[0013] In some embodiments, the infrared thermal imager is equipped with a distance sensor for monitoring and identifying distance, a laser pointer for marking the detection midpoint, and a temperature sensor for monitoring ambient temperature.

[0014] In some embodiments, the windproof frame is moved along the insert rod, thereby moving the outer side out of the scanning range of the infrared lens and making the infrared lens protrude, thereby enhancing the large-area scanning effect and preventing the field of view from being obstructed.

[0015] Another technical problem to be solved by the present invention is to provide a method for using a high-efficiency detection device for waterproofing and leakage in civil construction, comprising the following steps:

[0016] Step 1: Determine the heating method of the target object, either by actively heating with a hot air blower or by utilizing the ambient temperature difference;

[0017] Step 2: Determine whether to use the large-area scanning mode or the fixed-point windproof scanning mode based on the environmental conditions. The large-area scanning mode quickly scans the entire roof, exterior walls, and floor slabs to generate a visual temperature distribution map.

[0018] Step 3: If the wind speed in the environment is high, the wind speed sensor will detect that the wind speed exceeds the threshold and display a warning icon on the infrared thermal imager screen. At this time, the operator should hold the handle with one hand and apply pressure, and make the windproof frame press against the detection surface.

[0019] Step 4: After the windproof frame is compressed, it presses against the spring through the positioning block and moves along the insertion rod. The spring continuously contracts, the hook disengages from the central groove of the infrared thermal imager, and presses against the rocker plate during the continuous movement, forcing the rocker plate to flip.

[0020] Step 5: After the rocker flips, the hook continues to move until the end hooks the edge of the rocker. At this time, the operator stops pressing. When the spring rebounds, it pushes open the windproof frame. When the windproof frame is pushed open, the hook drives the rocker to flip again. The rocker rests on the groove in the middle of the infrared thermal imager and fills the drop in that part, so that the hook can directly detach from the infrared thermal imager along the edge of the rocker.

[0021] Step Six: After the hook is detached from the infrared thermal imager, the outer side of the windproof frame extends to enclose the infrared lens in the middle, which can then block the airflow during positioning and detection.

[0022] Step 7: If you need to switch back to the wide-area scanning mode, simply repeat steps 4 to 6. When the hook pushes the rocker over, stop applying pressure. At this point, the hook will be stuck in the groove in the middle of the infrared thermal imager.

[0023] Compared with the prior art, the present invention provides a high-efficiency detection device for waterproofing and leakage in civil construction and its usage method, which has the following beneficial effects:

[0024] A high-efficiency detection device for waterproofing and leakage in civil engineering construction and its usage method are disclosed. By pointing an infrared lens at the wall or roof surface that has cooled down after being exposed to sunlight at night, the seepage area is detected because the temperature change is asynchronous with the dry area due to the different thermal inertia of water. In large-area scanning, the entire roof, exterior walls, and floor slabs are quickly scanned to generate a visualized temperature distribution map. If the wind speed in the environment is high, and the wind speed sensor detects that the wind speed exceeds the threshold (e.g., >3 m / s), a warning icon will be displayed on the infrared thermal imager screen. At this time, the operator holds handle 3 with one hand and applies pressure, so that the windproof frame is pressed against the detection surface (wall, roof plane). After being pressed, the windproof frame presses against the spring through the positioning block and moves along the insertion rod. The spring continuously contracts, the hook disengages from the central groove of the infrared thermal imager, and presses against the rocker plate during continuous movement, forcing the rocker plate to flip. After the rocker plate flips, the hook continues to move until the end hooks the edge of the rocker plate. At this time, the operator stops pressing, and the spring rebounds and pushes the windproof frame open. When the windproof frame is pushed open, the hook drives the rocker plate to flip again. The rocker plate rests on the central groove of the infrared thermal imager and fills the drop in that part, so that the hook directly disengages from the infrared thermal imager along the edge of the rocker plate. At this time, the outer side of the windproof frame extends and wraps around the infrared lens in the middle, which can block the airflow during positioning detection. If you need to switch back to wide-area scanning mode, simply repeat the above steps. When the hook pushes the rocker over, stop applying pressure. At this point, the hook will be stuck in the groove in the middle of the infrared thermal imager.

[0025] The above setup and process enable this detection device, compared to existing infrared imagers, to flexibly change its operating mode through the combination of windproof frame and mechanical structure. This reduces the temperature impact on the detection point in the event of strong winds, thereby improving the device's environmental adaptability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the side end structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the connection position structure of the positioning block and the insertion rod of the present invention;

[0029] Figure 4 This is a schematic diagram of the overall structure of the windproof frame of the present invention;

[0030] Figure 5 This is a schematic diagram of the installation position of the hook and base of the present invention;

[0031] Figure 6 This is a schematic diagram of the overall state of the hook of the present invention after it is fastened to the rocker.

[0032] Figure 7This is a schematic diagram of the bottom structure of the present invention.

[0033] In the diagram: 1. Infrared thermal imager; 2. Infrared lens; 3. Handle; 4. Control panel; 5. Windproof frame; 6. Positioning block; 7. Insert rod; 8. Spring; 9. Hook; 10. Base; 11. Rocker; 12. Wind speed sensor; 13. Distance sensor; 14. Laser pointer; 15. Temperature sensor; 16. Washer. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Please see Figure 1-7 In this embodiment: a high-efficiency detection device for waterproofing and leakage in civil construction and its usage method, including an infrared thermal imager 1, an infrared lens 2, and a handle 3 for easy gripping. A windproof frame 5 is set on the side of the infrared thermal imager 1 to block the wind. When the windproof frame 5 moves to the outside of the infrared lens 2, it can isolate the influence of the ambient wind on the detection point and prevent the surface heat dissipation of the detection point from accelerating when the wind speed is too high, which would reduce the temperature difference and make it difficult to identify the weak thermal signal generated by the leakage point.

[0038] The windproof frame 5 has a rectangular frame structure, but it can also be circular, trapezoidal, or any shape that can block airflow. Two perforated slots are provided on the side ends of the windproof frame 5 (e.g., Figure 4 As shown in the figure, it is used to fit the external structure of the infrared thermal imager 1.

[0039] Since the infrared lens 2 needs to scan a large area during normal operation, the outer side of the lens needs to maintain a wide field of view. Therefore, positioning blocks 6 are set on both sides of the windproof frame 5, and a rod 7 is inserted into the positioning block 6. A spring 8 is sleeved on the outside of the rod 7. The rod 7 is used to limit the travel when the windproof frame 5 slides, and the spring 8 can help the windproof frame 5 to reset. Thus, the windproof frame 5 can move along the rod 7, thereby moving the outer side out of the scanning range of the infrared lens 2 and making the infrared lens 2 protrude, thereby enhancing the large-area scanning effect and preventing the field of view from being blocked.

[0040] Hooks 9 are bolted to the outside of the windproof frame 5 (e.g.) Figure 4 As shown), hook 9 can be positioned at the recessed part in the middle of the infrared thermal imager 1 (e.g. Figure 3 When in contact (as shown), the hook is positioned in the concave area. This allows the windproof frame 5 to move and compress the spring 8, causing the hook 9 to hook onto the middle of the infrared thermal imager 1. In this way, the windproof frame 5 can be fixed (locked). Once the windproof frame 5 is fixed, the infrared lens 2 can maintain its protruding working state, i.e., the wide-area scanning mode.

[0041] To enable the infrared lens 2 to flexibly switch between wide-area scanning mode and fixed-point windproof scanning mode, a base 10 is provided on the side of the infrared thermal imager 1. A rocker arm 11 is rotatably mounted on the base 10, and the base 10 provides rotational support for the rocker arm 11 (e.g., Figure 5 As shown), the rocker arm 11 is installed at an upward angle. It is used to rest on the inner groove in the middle of the infrared thermal imager 1 to fill the height difference, so that the hook 9 can be quickly released from the inner groove in the middle of the infrared thermal imager 1 (unlocked state). The specific operation steps are as follows:

[0042] When the infrared thermal imager 1 needs to switch from wide-area scanning mode to fixed-point windproof scanning mode, the windproof frame 5 is pressed against the wall to be scanned, and then the operator holds the handle 3 and presses it down. Under pressure, the windproof frame 5 presses against the spring 8 via the positioning block 6 and moves along the insertion rod 7. The spring 8 continuously contracts, causing the hook 9 to disengage from the central groove of the infrared thermal imager 1 and, during its continuous movement, press against the rocker 11, forcing the rocker 11 to flip. After the rocker 11 flips, the hook 9 continues to move until its end hooks the edge of the rocker 11. At this point, the operator stops pressing, and the spring 8, upon rebounding, pushes the windproof frame 5 open. As the windproof frame 5 is pushed open, the hook 9 causes the rocker 11 to flip again. The rocker 11 rests on the central groove of the infrared thermal imager 1, filling the drop in that area, allowing the hook 9 to directly disengage from the infrared thermal imager 1 along the edge of the rocker 11 (e.g., ...). Figure 6 (As shown in the diagram), the windproof frame 5 extends outwards, enclosing the infrared lens 2 in the middle. This effectively blocks airflow during positioning and detection, thus completing the switch from wide-range scanning mode to positioning windproof scanning. To switch back to wide-range scanning mode, simply repeat the above steps. When the hook 9 pushes the rocker 11 over, stop applying pressure. At this point, the hook 9 is locked in the groove in the middle of the infrared thermal imager 1.

[0043] To ensure that the infrared lens 2 is not abraded by the wall when the operator presses the infrared thermal imager 1 with one hand, a washer 16 is fitted around the outside of the infrared lens 2 (e.g., Figure 2 As shown, the washer 16 can effectively prevent the infrared lens 2 from accidentally touching the wall and causing damage.

[0044] A wind speed sensor 12 for monitoring wind speed is integrated on the top of the infrared thermal imager 1. The reading of the wind speed sensor 12 is displayed on the screen of the infrared thermal imager 1. When the wind speed exceeds the threshold (e.g., >3 m / s), a warning icon is displayed on the screen of the infrared thermal imager 1 or it is suggested to activate the windproof frame 5.

[0045] A distance sensor 13 for monitoring and identifying distance, a laser pointer 14 for marking the detection midpoint, and a temperature sensor 15 for monitoring ambient temperature are respectively installed on the side of the infrared thermal imager 1.

[0046] In this embodiment, by pointing the infrared lens 2 at the wall or roof surface that has cooled down after being exposed to sunlight at night, the water seepage area is detected because its temperature change is asynchronous with the dry area due to the different thermal inertia of water. During large-area scanning, the entire roof, exterior walls, and floor slabs are quickly scanned to generate a visualized temperature distribution map. If the wind speed in the environment is high, the wind speed sensor 12 detects that the wind speed exceeds a threshold (e.g., >3). (m / s) A warning icon is displayed on the screen of the infrared thermal imager 1. At this time, the operator holds the handle 3 with one hand and applies pressure, and the windproof frame 5 is pressed against the detection surface (wall, roof plane). After being pressed, the windproof frame 5 presses against the spring 8 through the positioning block 6 and moves along the insertion rod 7. The spring 8 continuously contracts, and the hook 9 disengages from the central groove of the infrared thermal imager 1 and presses against the rocker 11 during continuous movement, forcing the rocker 11 to flip. After the rocker 11 flips, the hook 9 continues to move until the end hooks the edge of the rocker 11. At this time, the operator stops pressing, and the spring 8 pushes the windproof frame 5 open when it rebounds. When the windproof frame 5 is pushed open, the hook 9 drives the rocker 11 to flip again. The rocker 11 rests on the central groove of the infrared thermal imager 1 and fills the drop in that part, so that the hook 9 directly disengages from the infrared thermal imager 1 along the edge of the rocker 11. At this time, the outer side of the windproof frame 5 extends and wraps the infrared lens 2 in the middle, which can block the airflow during positioning detection. If you need to switch back to the wide-area scanning mode, simply repeat the above steps. When the hook 9 pushes the rocker 11 over, stop applying pressure directly. At this time, the hook 9 will be stuck in the groove in the middle of the infrared thermal imager 1.

[0047] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency detection device for waterproofing and leakage in civil construction, comprising an infrared thermal imager (1), an infrared lens (2), and a handle (3) for easy gripping, characterized in that: The infrared thermal imager (1) is provided with a windproof frame (5) for wind protection. When the windproof frame (5) moves to the outside of the infrared lens (2), it can isolate the influence of the ambient wind on the detection point and prevent the surface heat dissipation of the detection point from being accelerated when the wind speed is too high, thus reducing the temperature difference. The windproof frame (5) is provided with positioning blocks (6) on both sides, and a rod (7) is inserted into the positioning block (6), and a spring (8) is sleeved on the outside of the rod (7). The windproof frame (5) is provided with hooks (9) on the outside.

2. The high-efficiency detection device for waterproofing and leakage in civil construction according to claim 1, characterized in that: The windproof frame (5) has a rectangular frame structure, and two hollowed-out grooves are provided on the side of the windproof frame (5) to fit the external structure of the infrared thermal imager (1).

3. The high-efficiency detection device for waterproofing and leakage in civil construction according to claim 2, characterized in that: The infrared thermal imager (1) is provided with a base (10) on its side. A rocker (11) is rotatably mounted on the base (10). The base (10) is used to provide rotational support for the rocker (11). The rocker (11) is installed at an upward angle and is used to rest on the inner groove in the middle of the infrared thermal imager (1) to fill the height difference, so that the hook (9) can quickly detach from the inner groove in the middle of the infrared thermal imager (1).

4. The high-efficiency detection device for waterproofing and leakage in civil construction according to claim 1, characterized in that: The infrared lens (2) is fitted with a gasket (16) on the outside to prevent the infrared lens (2) from accidentally touching the wall and being damaged.

5. The high-efficiency detection device for waterproofing and leakage in civil construction according to claim 4, characterized in that: The infrared thermal imager (1) integrates a wind speed sensor (12) on its top for monitoring wind speed. The index of the wind speed sensor (12) is displayed on the screen of the infrared thermal imager (1). When the wind speed exceeds a preset threshold of 3 m / s, a warning icon is displayed on the screen of the infrared thermal imager (1).

6. The high-efficiency detection device for waterproofing and leakage in civil construction according to claim 1, characterized in that: The infrared thermal imager (1) is equipped with a distance sensor (13) for monitoring and identifying distance, a laser pointer (14) for marking the detection midpoint, and a temperature sensor (15) for monitoring ambient temperature on its side.

7. The high-efficiency detection device for waterproofing and leakage in civil construction according to claim 2, characterized in that: The windproof frame (5) moves along the insert rod (7) so that the outer side is removed from the scanning range of the infrared lens (2) and the infrared lens (2) protrudes, thereby enhancing the large-area scanning effect and preventing the field of view from being blocked.

8. A method for using a high-efficiency detection device for waterproofing and leakage in civil engineering construction, characterized in that, This method uses the high-efficiency detection device for waterproofing and leakage in civil construction as described in any one of claims 1-7, and includes the following steps: Step 1: Determine the heating method of the target object, either by actively heating with a hot air blower or by utilizing the ambient temperature difference; Step 2: Determine whether to use the large-area scanning mode or the fixed-point windproof scanning mode based on the environmental conditions. The large-area scanning mode quickly scans the entire roof, exterior wall, or floor to generate a visual temperature distribution map. Step 3: If the wind speed in the environment is high, the wind speed sensor (12) detects that the wind speed exceeds the preset threshold, which is 3m / s. A warning icon is displayed on the screen of the infrared thermal imager (1). At this time, the operator holds the handle (3) with one hand and applies pressure, and makes the windproof frame (5) press against the detection surface, which is the wall or roof plane. Step 4: After the windproof frame (5) is pressed, it presses against the spring (8) through the positioning block (6) and moves along the insertion rod (7). The spring (8) continuously contracts, the hook (9) disengages from the central groove of the infrared thermal imager (1), and presses against the rocker (11) during continuous movement, forcing the rocker (11) to flip. Step 5: After the rocker (11) flips over, the hook (9) continues to move until the end hooks the edge of the rocker (11). At this time, the operator stops pressing. When the spring (8) rebounds, it pushes open the windproof frame (5). When the windproof frame (5) is pushed open, the hook (9) drives the rocker (11) to flip over again. The rocker (11) rests on the groove in the middle of the infrared thermal imager (1) and fills the drop in that part, so that the hook (9) can directly detach from the infrared thermal imager (1) along the edge of the rocker (11). Step 6: When the hook (9) is detached from the infrared thermal imager (1), the windproof frame (5) extends outward to wrap the infrared lens (2) in the middle, which can block the airflow during positioning and detection. Step 7: If you need to switch back to the wide-area scanning mode, simply repeat steps 4 to 6. When the hook (9) pushes the rocker (11) over, stop applying pressure directly. At this time, the hook (9) will be stuck in the groove in the middle of the infrared thermal imager (1).

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