Pipeline leakage point detection device based on thermal imaging and listening positioning

Abstract

The utility model relates to the technical field of pipeline detection, in particular to a pipeline leakage point detection device based on thermal imaging and listening positioning. An operator enables a water inlet hose to be communicated with the inlet end of a to-be-detected pipeline, enables a water outlet hose to be communicated with the outlet end of the to-be-detected pipeline, and then starts a heater and a water pump, so that hot water in a water tank circularly flows in the to-be-detected pipeline; hot water is discharged from the leakage point of the to-be-detected pipeline in the flowing process of the to-be-detected pipeline, so that the ground temperature right above the leakage point of the to-be-detected pipeline is higher than that of other ground areas; moving the first infrared scanning module close to the ground area of the to-be-detected pipeline while scanning, observing a formed earth surface infrared thermogram, and finding out a position point with the highest earth surface temperature in the ground area; the position point with the highest surface temperature is the leakage position point of the to-be-detected pipeline, the leakage point of the underground to-be-detected pipeline is determined more accurately, and interference of external noise can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipeline inspection technology, and in particular to a pipeline leak detection device based on thermal imaging and acoustic localization. Background Technology

[0002] With the acceleration of modernization, the number of underground pipe networks (such as underground water pipes) is increasing day by day. When a large number of underground water pipes with complex layouts leak, it is necessary to locate the leak point in time to avoid water loss. At present, locating the leak point of buried pipes is a difficult problem in the industry, and there is no universal solution.

[0003] Existing methods for detecting water pipe leaks are rather primitive, requiring operators to use handheld acoustic detectors on the ground to locate leaks. This method is susceptible to external noise interference, which reduces the accuracy of leak detection. Utility Model Content

[0004] The main purpose of this invention is to provide a pipe leak detection device based on thermal imaging and acoustic localization, which aims to solve the problem that existing water pipe leak detection schemes are easily affected by external noise, resulting in reduced accuracy of leak detection.

[0005] To achieve the above objectives, the technical solution proposed by this utility model is as follows:

[0006] A pipe leak detection device based on thermal imaging and acoustic localization includes a hot water circulation assembly and a first detection assembly. The hot water circulation assembly includes a water tank, an inlet hose, an outlet hose, a water pump, and a heater. The heater is disposed in the water tank to heat the water in the tank. The inlet hose and the outlet hose are both connected to the water tank. The water pump is disposed in the water tank to transport water from the tank to the inlet hose. The inlet hose is detachably connected to the inlet end of the pipe to be tested, and the outlet hose is detachably connected to the outlet end of the pipe to be tested. The first detection assembly includes a handheld display. A first display screen is disposed on one side of the handheld display, and a first infrared scanning module is disposed on the other side of the handheld display. The first infrared scanning module is used to capture images of the ground surface and form a ground surface infrared thermal image, and the first display screen is used to display the ground surface infrared thermal image.

[0007] Preferably, it further includes a second monitoring component; the second monitoring component includes a handheld rod and a connecting frame; the handheld rod is hinged to the connecting frame; a second display screen is provided on one side of the connecting frame; a second infrared scanning module is provided on the other side of the connecting frame; the second infrared scanning module is used to capture images of the ground surface and form a ground surface infrared thermal image, and the second display screen is used to display the ground surface infrared thermal image.

[0008] Preferably, it also includes a microphone and a speaker; the microphone is used to collect sound signals from the pipe under test, and the speaker is used to play the sound signals collected by the microphone; the connecting frame includes a support plate in the middle and side plates disposed around the support plate; the handheld rod is hinged to the side plates; the support plate is a rectangular plate; the second display screen is disposed on one side of the support plate; the second infrared scanning probe module and the microphone are both disposed on the other side of the support plate.

[0009] Preferably, the handheld lever includes a first lever and a handheld tube sleeved on the first lever; the detection assembly further includes a support base, a rotating block, a locking plate, a spring, and a rotating shaft; the support base is connected to the outer wall of the side plate; the rotating shaft is fixedly connected to the rotating block and rotatably passes through the support base; the first lever is connected to the rotating block; the locking plate is slidably connected to the outer wall of the side plate; one end of the spring is connected to the locking plate, and the other end of the spring is connected to the support base; the spring force causes the locking plate to tend to move closer to the support base; the locking plate can abut against the rotating block, thereby locking the angle between the rotating block and the connecting frame.

[0010] Preferably, the detection component further includes a slide rail; the slide rail is disposed on the outer wall of the side plate; the slide rail is parallel to the rotating shaft; one end of the locking plate is slidably connected to the slide rail; and the spring is located between the side plate and the rotating block.

[0011] Preferably, the support base includes a first outer wall perpendicular to the side plate; the rotating block includes a second outer wall and a third outer wall parallel to each other; the second outer wall and the third outer wall are respectively located on both sides of the rotating block; the locking plate includes a fourth outer wall perpendicular to the side plate; the first outer wall, the second outer wall, the third outer wall and the fourth outer wall are parallel to each other; the elastic force of the spring causes the second outer wall to abut against the first outer wall, and the fourth outer wall to abut against the third outer wall.

[0012] Preferably, both the first outer wall and the fourth outer wall are provided with a rubber layer; a pull ring is provided on the side of the locking plate opposite to the rotating block.

[0013] Preferably, the handheld tube is slidably sleeved on the first rod; a threaded through hole is provided on the side wall of the handheld tube; a threaded rod is screwed into the threaded through hole; one end of the threaded rod is used to abut against the first rod to fix the position of the handheld tube relative to the first rod; and a nut is provided at the other end of the threaded rod.

[0014] Preferably, the end of the handheld tube is fitted with a rubber sleeve.

[0015] Preferably, the heater is a resistance wire heater.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] The pipeline leak detection device based on thermal imaging and acoustic localization proposed in this invention can more accurately determine the leak point of underground pipelines. In use, the operator connects the inlet hose to the inlet end of the pipeline under test and the outlet hose to the outlet end. Then, the heater and water pump are started, causing the hot water in the tank to circulate within the pipeline under test. During this flow, the hot water will exit from the leak point, causing hot air to rise and thus making the ground temperature directly above the leak point higher than other areas. The operator then holds a handheld display and activates the first infrared sensor. The scanning module moves the first infrared scanning module close to the ground area near the pipeline to be tested while scanning. During the scanning process, the infrared thermal image of the ground surface on the first display screen is observed to find the location with the highest surface temperature in the ground area. Because the hot water leaking from the pipeline will accumulate, causing the hot air to rise, the surface temperature at the location corresponding to the leak point will be even higher. In other words, the location with the highest surface temperature obtained by scanning is the leak location of the pipeline to be tested. In summary, the technical solution of this utility model can more accurately determine the leak point of the underground pipeline to be tested and can reduce the interference of external noise. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a side view of the handheld display of an embodiment of the pipe leak detection device based on thermal imaging and acoustic localization proposed in this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the second detection component in an embodiment of the pipeline leak detection device based on thermal imaging and acoustic localization proposed in this utility model.

[0021] Figure 3 This is a partial structural diagram of the second detection component of an embodiment of the pipeline leak detection device based on thermal imaging and acoustic localization proposed in this utility model.

[0022] Figure 4 for Figure 2 A magnified view showing the details at point A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 110. First rod; 120. Handheld tube; 130. Rubber sleeve; 140. Side plate; 150. Second infrared scanning module; 160. Microphone; 170. Support block; 180. Rotating block; 190. Rotating shaft; 210. Second display screen; 220. Spring; 230. Slide rail; 240. Locking plate; 250. Pull ring; 260. First outer wall; 270. Second outer wall; 280. Third outer wall; 290. Fourth outer wall; 310. Threaded rod; 320. Nut; 330. Handheld display; 340. First display screen; 350. First infrared scanning module.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] This invention proposes a pipeline leak detection device based on thermal imaging and acoustic localization.

[0032] As attached Figure 1 As shown, in one embodiment of the pipe leak detection device based on thermal imaging and sound location proposed in this utility model, the pipe leak detection device based on thermal imaging and sound location includes a hot water circulation component (not shown) and a detection component; the hot water circulation component includes a water tank, an inlet hose, an outlet hose, a water pump, and a heater; the heater is disposed in the water tank for heating the water in the water tank; the inlet hose and the outlet hose are both connected to the water tank; the water pump is disposed in the water tank for transporting the water in the water tank to the inlet hose; the inlet hose can be detachably connected to the inlet end of the pipe to be tested, and the outlet hose can be detachably connected to the outlet end of the pipe to be tested; the first detection component includes a handheld display 330; a first display screen 340 is disposed on one side of the handheld display 330, and a first infrared scanning module 350 is disposed on the other side of the handheld display 330; the first infrared scanning module 350 is used to capture the ground surface and form a ground surface infrared thermal image, and the first display screen 340 is used to display the ground surface infrared thermal image. The infrared scanning module can scan the surface temperature of an object in conjunction with the display screen and perform infrared thermal imaging to display an infrared thermal image of the ground surface; this is existing technology and will not be described in detail here.

[0033] The pipeline leak detection device based on thermal imaging and acoustic localization proposed in this invention can more accurately determine the leak point of underground pipelines. In use, the operator connects the inlet hose to the inlet end of the pipeline under test and the outlet hose to the outlet end. Then, the heater and water pump are started, causing the hot water in the tank to circulate within the pipeline under test. During this flow, the hot water will exit from the leak point, causing hot air to rise and thus increasing the ground temperature directly above the leak point compared to other areas. The operator then holds a handheld display 330 and activates the first infrared scanning mode. Block 350 involves moving the first infrared scanning module 350 close to the ground area near the pipe to be tested while scanning. During the scanning process, the infrared thermal image of the ground surface on the first display screen 340 is observed to find the location with the highest ground surface temperature in the ground area. Because the hot water leaking from the pipe will accumulate, causing the hot air to rise, the temperature of the ground surface location corresponding to the leak point will be higher. In other words, the location with the highest ground surface temperature obtained by scanning is the leak location of the pipe to be tested. In summary, the technical solution of this utility model can more accurately determine the leak point of the underground pipe to be tested and can reduce the interference of external noise.

[0034] In addition, as attached Figure 2 -Appendix Figure 4 As shown, in another embodiment of this utility model, the second detection component includes a handheld rod and a connecting frame; the handheld rod is hinged to the connecting frame; a second display screen 210 is provided on one side of the connecting frame; a second infrared scanning module 150 is provided on the other side of the connecting frame; the second infrared scanning module 150 is used to capture the ground surface and form a ground surface infrared thermal image, and the second display screen 210 is used to display the ground surface infrared thermal image.

[0035] This pipe leak detection device based on thermal imaging and sound location also includes a microphone 160 (i.e., a sound sensor) and a speaker (not shown, such as a headset); the microphone 160 is used to collect sound signals from the pipe under test, and the speaker is used to play the sound signals collected by the microphone 160.

[0036] During the infrared scanning process, the microphone 160 and speaker can be used to determine the leak point. The microphone 160 can collect the sound of water flow emitted from the pipe under test and play it through the speaker. The sound of water flow at the leak point will be louder, so the operator can determine the location of the leak point by listening to the volume of the sound signal in the speaker. In actual operation, the location point with the strongest sound signal intensity and the location point with the highest surface temperature coincide with the same location point, and this location point can be presumed to be the leak point of the underground pipe under test.

[0037] Meanwhile, the aforementioned connecting frame includes a support plate in the middle and side plates 140 arranged around the support plate; the hand handle is hinged to the side plates 140; the support plate is a rectangular plate. The second display screen 210 is arranged on one side of the support plate; the second infrared scanning module 150 and the microphone 160 are both arranged on the other side of the support plate. The handheld lever includes a first lever 110 and a handheld tube 120 sleeved on the first lever 110; the detection assembly also includes a support base, a rotating block 180, a locking plate 240, a spring 220, and a rotating shaft 190; the support base is connected to the outer wall of the side plate 140; the rotating shaft 190 is fixedly connected to the rotating block 180 and rotatably passes through the support base; the first lever 110 is connected to the rotating block 180; the locking plate 240 is slidably connected to the outer wall of the side plate 140; one end of the spring 220 is connected to the locking plate 240, and the other end of the spring 220 is connected to the support base; the elastic force of the spring 220 causes the locking plate 240 to tend to move closer to the support base; the locking plate 240 can abut against the rotating block 180, thereby locking the angle between the rotating block 180 and the connecting frame. Through the above technical solution, the angle between the handheld lever and the connecting frame can be adjusted and locked.

[0038] Meanwhile, the detection assembly also includes a slide rail 230; the slide rail 230 is disposed on the outer wall of the side plate 140; the slide rail 230 is parallel to the rotating shaft 190; one end of the locking plate 240 is slidably connected to the slide rail 230; and the spring 220 is located between the side plate 140 and the rotating block 180.

[0039] Specifically, the support base includes a first outer wall 260 perpendicular to the side plate 140; the rotating block 180 includes a second outer wall 270 and a third outer wall 280 parallel to each other; the second outer wall 270 and the third outer wall 280 are respectively located on both sides of the rotating block 180; the locking plate 240 includes a fourth outer wall 290 perpendicular to the side plate 140; the first outer wall 260, the second outer wall 270, the third outer wall 280, and the fourth outer wall 290 are parallel to each other; the elastic force of the spring 220 causes the second outer wall 270 to abut against the first outer wall 260, and the fourth outer wall 290 to abut against the third outer wall 280. Both the first outer wall 260 and the fourth outer wall 290 are provided with a rubber layer; a pull ring 250 is provided on the side of the locking plate 240 opposite to the rotating block 180.

[0040] With the above technical solution, when it is necessary to adjust the angle of the hand lever relative to the connecting frame, manually pull the pull ring 250 so that the fourth outer wall 290 of the locking plate 240 no longer abuts against the third outer wall 280. At this time, the position of the rotating block 180 relative to the support seat can be rotated to adjust the angle of the hand lever relative to the connecting frame. When the rotating block 180 is rotated to the appropriate position, the pull ring 250 is released again. Under the action of the spring 220, the fourth outer wall 290 abuts against the third outer wall 280 again, and the second outer wall 270 abuts against the first outer wall 260, thereby clamping and fixing the angle of the rotating block 180 relative to the connecting frame, that is, fixing the angle of the hand lever relative to the connecting frame.

[0041] Furthermore, the handheld tube 120 is slidably sleeved on the first rod 110; a threaded through hole (not shown) is provided on the side wall of the handheld tube 120; a threaded rod 310 is screwed into the threaded through hole; one end of the threaded rod 310 is used to abut against the first rod 110 to fix the position of the handheld tube 120 relative to the first rod 110; a nut 320 is provided at the other end of the threaded rod 310. With this configuration, the handheld tube 120 can slide axially relative to the first rod 110, thereby adjusting the length of the entire handheld rod. When the appropriate length is reached, the nut 320 can be tightened, causing one end of the threaded rod 310 to abut against the first rod 110, thus fixing the handheld tube 120 relative to the first rod 110. A rubber sleeve 130 is fitted onto the end of the handheld tube 120. The heater is a resistance wire heater.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pipe leak detection device based on thermal imaging and acoustic localization, characterized in that, The device includes a hot water circulation assembly and a first detection assembly. The hot water circulation assembly includes a water tank, an inlet hose, an outlet hose, a water pump, and a heater. The heater is located inside the water tank to heat the water in the tank. Both the inlet hose and the outlet hose are connected to the water tank. The water pump is located in the water tank to pump water from the tank to the inlet hose. The inlet hose is detachably connected to the inlet end of the pipe under test, and the outlet hose is detachably connected to the outlet end of the pipe under test. The first detection assembly includes a handheld display. A first display screen is located on one side of the handheld display, and a first infrared scanning module is located on the other side. The first infrared scanning module is used to capture images of the ground surface and form an infrared thermal image of the ground surface, and the first display screen is used to display the infrared thermal image of the ground surface. It also includes a second detection component; the second detection component includes a handheld rod and a connecting frame; the handheld rod is hinged to the connecting frame; a second display screen is provided on one side of the connecting frame; a second infrared scanning module is provided on the other side of the connecting frame; the second infrared scanning module is used to capture the ground surface and form a ground surface infrared thermal image, and the second display screen is used to display the ground surface infrared thermal image.

2. The pipeline leak detection device based on thermal imaging and acoustic localization according to claim 1, characterized in that, It also includes a microphone and a speaker; the microphone is used to collect sound signals from the pipe under test, and the speaker is used to play the sound signals collected by the microphone; the connecting frame includes a support plate in the middle and side plates disposed around the support plate; the handheld rod is hinged to the side plates; the support plate is a rectangular plate; the second display screen is disposed on one side of the support plate; the second infrared scanning module and the microphone are both disposed on the other side of the support plate.

3. The pipeline leak detection device based on thermal imaging and acoustic localization according to claim 2, characterized in that, The handheld lever includes a first lever and a handheld tube sleeved on the first lever; the detection assembly further includes a support base, a rotating block, a locking plate, a spring, and a rotating shaft; the support base is connected to the outer wall of the side plate; the rotating shaft is fixedly connected to the rotating block and rotatably passes through the support base; the first lever is connected to the rotating block; the locking plate is slidably connected to the outer wall of the side plate; one end of the spring is connected to the locking plate, and the other end of the spring is connected to the support base; the spring force causes the locking plate to tend to move closer to the support base; The locking plate can abut against the rotating block, thereby locking the angle between the rotating block and the connecting frame.

4. A pipe leak detection device based on thermal imaging and acoustic localization according to claim 3, characterized in that, The detection assembly further includes a slide rail; the slide rail is disposed on the outer wall of the side plate; the slide rail is parallel to the rotating shaft; one end of the locking plate is slidably connected to the slide rail; the spring is located between the side plate and the rotating block.

5. A pipe leak detection device based on thermal imaging and acoustic localization according to claim 3, characterized in that, The support base includes a first outer wall perpendicular to the side plate; the rotating block includes a second outer wall and a third outer wall parallel to each other; the second outer wall and the third outer wall are respectively located on both sides of the rotating block; the locking plate includes a fourth outer wall perpendicular to the side plate; the first outer wall, the second outer wall, the third outer wall and the fourth outer wall are parallel to each other; the elastic force of the spring causes the second outer wall to abut against the first outer wall, and the fourth outer wall to abut against the third outer wall.

6. A pipe leak detection device based on thermal imaging and acoustic localization according to claim 5, characterized in that, Both the first outer wall and the fourth outer wall are provided with a rubber layer; a pull ring is provided on the side of the locking plate opposite to the rotating block.

7. A pipe leak detection device based on thermal imaging and acoustic localization according to claim 3, characterized in that, The handheld tube is slidably sleeved on the first rod; a threaded through hole is provided on the side wall of the handheld tube; a threaded rod is screwed into the threaded through hole; one end of the threaded rod is used to abut against the first rod to fix the position of the handheld tube relative to the first rod; a nut is provided at the other end of the threaded rod.

8. A pipe leak detection device based on thermal imaging and acoustic localization according to claim 7, characterized in that, The end of the handheld tube is fitted with a rubber sleeve.

9. A pipe leak detection device based on thermal imaging and acoustic localization according to claim 1, characterized in that, The heater is a resistance wire heater.

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