Water pipe water leakage detection device and detection method

Abstract

The invention discloses a water pipe leakage detection device and detection method, and belongs to the technical field of water pipe leakage detection. Comprising two groups of upper detection sleeves and two groups of lower detection sleeves which are detachably connected to a pipeline, the two groups of upper detection sleeves are connected, the two groups of lower detection sleeves are connected, and the upper detection sleeves and the lower detection sleeves which are symmetrically arranged are detachably connected; detection bags are fixedly connected in the upper detection sleeve and the lower detection sleeve, and pressure sensors are fixedly connected in the detection bags; the upper detection sleeve and the lower detection sleeve are internally and fixedly connected with material storage cylinders, the material storage cylinders are fixedly connected with material spraying pipes, and the discharging ends of the material spraying pipes face the side wall of the pipeline; the pressure change in the detection bag is monitored in real time through the pressure sensor, data analysis is performed in combination with a computer platform, whether the pipeline leaks water or not can be accurately judged, and the problem that a traditional manual detection mode is prone to being interfered by human factors and the environment is effectively solved; particularly, tiny leakage easily occurring at the pipeline joint and the like can be timely and accurately detected.

Description

Technical Field

[0001] This invention relates to the field of water pipe leak detection technology, and in particular to a water pipe leak detection device and detection method. Background Technology

[0002] In water conservancy projects, municipal water supply, and industrial pipeline transportation, water pipes serve as crucial carriers for liquid transmission, and leaks are a significant factor affecting the stable operation of these systems. Traditional methods for detecting water pipe leaks, such as visual inspection and listening with a leak detector, have several drawbacks. Visual inspection can only detect relatively obvious leaks, making it difficult to detect minor leaks or leaks in hidden locations (such as pipe connections). Leak detectors are greatly affected by environmental noise, resulting in low detection accuracy and efficiency. Furthermore, when a pipe leaks, residual chlorine in the water also leaks, and the attenuation of residual chlorine in the pipe network is accelerated, creating risk areas where residual chlorine levels do not meet standards.

[0003] While some sensor-based detection devices have emerged with technological advancements, they still have certain shortcomings: some devices employ an integrated structure, making installation extremely inconvenient for pipes with limited bottom space; others, while capable of detecting leaks, cannot accurately pinpoint the leak location, complicating subsequent maintenance; furthermore, in terms of sealing performance, many devices struggle to completely isolate external air interference, leading to inaccurate pressure detection and affecting the reliability of leak detection; additionally, they fail to provide timely feedback on residual chlorine levels in the water during leaks, hindering real-time transmission of chlorination signals to water plants; therefore, there is an urgent need for a water pipe leak detection device that is easy to install, provides accurate detection, and effectively pinpoints the leak location. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art, and to provide a water pipe leakage detection device and detection method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A water pipe leak detection device, comprising: Two sets of upper detection sleeves and two sets of lower detection sleeves are detachably connected to the pipeline. The two sets of upper detection sleeves are connected together, and the two sets of lower detection sleeves are connected together. The symmetrically arranged upper and lower detection sleeves are detachably connected. Both the upper and lower detection sleeves are fixedly connected to a detection bladder, and a pressure sensor is fixedly connected to the detection bladder. Both the upper and lower detection sleeves are fixedly connected to a storage cylinder, and a spray pipe is fixedly connected to the storage cylinder, with the discharge end of the spray pipe facing the side wall of the pipe. A pressure boosting tube is fixedly connected to the detection bladder, and the end of the pressure boosting tube away from the detection bladder is connected to the storage cylinder. During testing, two sets of upper detection sleeves and two sets of lower detection sleeves are connected in a corresponding manner. The detection bladder is inflated, and the pressure sensor detects the initial pressure in the detection bladder. After 30-60 minutes of testing, the pressure sensor detects the pressure in the detection bladder a second time. The initial detection pressure and the second detection pressure are analyzed and compared, and pressure is increased into the storage cylinder through the pressurization pipe. The fluorescent marking material in the storage cylinder is sprayed onto the side wall of the pipe through the spray pipe.

[0006] Preferably, both the upper and lower detection sleeves are fixedly connected with filling bladders. When the two sets of filling bladders are inflated, the two sets of symmetrically arranged filling bladders abut against each other, and the filling bladders fill the gap between the detection sleeve and the side wall of the pipe after they are inflated.

[0007] Preferably, an air pump is fixedly connected to both the upper and lower detection sleeves, and a three-way pipe is fixedly connected to the air outlet of the air pump. A first air supply pipe and a second air supply pipe are fixedly connected to the three-way pipe. The first air supply pipe is connected to the detection bladder, and the second air supply pipe is connected to the filling bladder.

[0008] Preferably, a first magnet is fixedly connected to both the upper and lower detection sleeves, and the two sets of symmetrically arranged first magnets attract each other.

[0009] Furthermore, a first sealing gasket is fixedly connected to both the upper and lower detection sleeves. When the two sets of first magnets attract each other, the two sets of symmetrically arranged first sealing gaskets abut against each other.

[0010] Furthermore, a second magnet is fixedly connected to both the upper and lower detection sleeves, and the two symmetrically arranged second magnets attract each other.

[0011] Furthermore, a second sealing gasket is fixedly connected to both the upper and lower detection sleeves. When the two sets of second magnets attract each other, the two sets of symmetrically arranged second sealing gaskets abut against each other.

[0012] Preferably, both the first magnet and the second magnet are strong magnets.

[0013] Preferably, both the first gas supply pipe and the booster pipe are flexible hoses.

[0014] A method for detecting water pipe leaks, using the aforementioned water pipe leak detection device, comprises the following steps: Step 1: Install two sets of upper detection sleeves and two sets of lower detection sleeves on the pipeline, so that the symmetrically arranged upper and lower detection sleeves are initially connected and fixed. Step 2: Start the air pump. The gas generated by the air pump is fed into the detection bladder through the first air supply pipe and into the filling bladder through the second air supply pipe via the three-way pipe. The filling bladder inflates and fills the gap between the detection sleeve and the side wall of the pipe. The pressure sensor detects the initial pressure in the detection bladder. Step 3: After 30-60 minutes of testing, the pressure sensor performs a second test on the pressure in the detection chamber and uploads the two pressure detection signals to the computer platform. The computer platform analyzes and compares the initial detection pressure and the second detection pressure. If the pressure change exceeds the threshold, the pipeline is leaking. At this time, the pressure is increased into the storage cylinder through the pressurization pipe, and the fluorescent marking material in the storage cylinder is sprayed onto the side wall of the pipeline through the spray pipe to mark the location of the leak. Step 4: After the test is completed, purge the gas from the test capsule and filling capsule, and remove the upper and lower test sleeves.

[0015] Compared with the prior art, the present invention provides a water pipe leakage detection device and detection method, which has the following beneficial effects: 1. This invention uses a pressure sensor to monitor changes in pressure inside the detection chamber in real time and combines this with data analysis on a computer platform to accurately determine whether a pipe is leaking. When a pipe leaks, gas will be released simultaneously. The detection sleeve closes to form a sealed chamber, and the change in air pressure inside the chamber is detected to achieve leak detection. This effectively avoids the problems of traditional manual detection methods being susceptible to human factors and environmental interference. In particular, it can detect small leaks that are prone to occur at pipe connections in a timely and accurate manner.

[0016] 2. When a pipeline leak is detected, the present invention utilizes the pressure transmission between the detection chamber and the storage cylinder through the pressurization pipe to accurately spray the fluorescent marking material in the storage cylinder onto the leak location on the side wall of the pipeline through the spray pipe, visually marking the leak point and providing clear guidance for subsequent maintenance work, greatly improving maintenance efficiency.

[0017] 3. The device of the present invention adopts a split and detachable structure with two sets of upper detection sleeves and two sets of lower detection sleeves. With the adsorption and fixation of the first magnet and the second magnet, it is not only easy to install on various pipelines, but also easy to remove after the detection is completed by venting the gas in the detection bag and filling bag. The operation is simple and saves a lot of installation and disassembly time.

[0018] 4. This invention can simultaneously monitor the residual chlorine content in water. The sensor is based on electrochemical principles, converting the residual chlorine concentration signal into an electrical signal through a specific electrochemical reaction with the residual chlorine in the water. When the pressure sensor detects a possible leak in the pipeline, the computer platform simultaneously receives the residual chlorine concentration data transmitted by the electrochemical chlorine sensor and performs comprehensive analysis in conjunction with the pressure change data from the pressure sensor. By continuously and in real-time monitoring the residual chlorine concentration in the water, the residual chlorine data can be transmitted to the computer platform in real time. Compared with traditional detection methods, this effectively improves the timeliness of residual chlorine monitoring, allowing staff to detect abnormal changes in residual chlorine concentration at the first opportunity and take timely control measures to ensure the safety of the water supply. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a water pipe leakage detection device proposed in this invention; Figure 2 This invention proposes a water pipe leakage detection device. Figure 1 Enlarged view of section A in the middle; Figure 3 This is a cross-sectional view of a water pipe leakage detection device proposed in this invention. Figure 1 ; Figure 4 This invention proposes a water pipe leakage detection device. Figure 3 Enlarged view of section B; Figure 5 This is a cross-sectional view of a water pipe leakage detection device proposed in this invention. Figure 2 ; Figure 6 An explosion of a water pipe leakage detection device proposed in this invention Figure 1 ; Figure 7 This invention proposes a water pipe leakage detection device. Figure 6 Enlarged view of section C; Figure 8 An explosion of a water pipe leakage detection device proposed in this invention Figure 2 ; Figure 9 This invention proposes a water pipe leakage detection device. Figure 8 Enlarged view of section D in the middle; Figure 10 This is a schematic diagram of the structure of embodiment 3 of the water pipe leakage detection device proposed in this invention.

[0020] In the diagram: 1. Upper detection sleeve; 2. Lower detection sleeve; 3. Pipeline; 301. Electrochemical chlorine sensor; 4. Gas pump; 401. T-connector; 4011. First gas delivery pipe; 4012. Second gas delivery pipe; 5. Filling bladder; 501. First pressure relief pipe; 6. Storage cylinder; 601. Spray pipe; 7. Detection bladder; 701. Pressure boosting pipe; 702. Pressure sensor; 703. Second pressure relief pipe; 8. First sealing gasket; 9. First magnet; 10. Second sealing gasket; 11. Second magnet. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1: Reference Figures 1-9 A water pipe leak detection device, comprising: Two sets of upper detection sleeves 1 and two sets of lower detection sleeves 2 are detachably connected to the pipe 3. The two sets of upper detection sleeves 1 are connected together, and the two sets of lower detection sleeves 2 are connected together. The upper detection sleeves 1 and lower detection sleeves 2 are detachably connected and arranged symmetrically. Both the upper detection sleeve 1 and the lower detection sleeve 2 are fixedly connected to a detection bladder 7, and a pressure sensor 702 is fixedly connected to the detection bladder 7. Pressure sensor 702 is electrically connected to an external computer platform; In practice, the four pressure sensors 702 will transmit pressure detection signals from different locations to the computer platform. The computer platform will analyze and compare the pressure changes in the detection bladder 7, thereby quickly determining whether there is a leak at the connection of the pipe 3.

[0023] Both the upper detection sleeve 1 and the lower detection sleeve 2 are fixedly connected to a storage cylinder 6, and a spray pipe 601 is fixedly connected to the storage cylinder 6. The discharge end of the spray pipe 601 faces the side wall of the pipe 3. A pressure boosting tube 701 is fixedly connected to the detection capsule 7, and the end of the pressure boosting tube 701 away from the detection capsule 7 is connected to the storage cylinder 6. During testing, two sets of upper detection sleeves 1 and two sets of lower detection sleeves 2 are connected to each other. The detection bladder 7 is inflated. The pressure sensor 702 detects the initial pressure in the detection bladder 7. After 30-60 minutes of testing, the pressure sensor 702 detects the pressure in the detection bladder 7 a second time. The initial detection pressure and the second detection pressure are analyzed and compared. The pressure is then increased to the storage cylinder 6 through the pressurization pipe 701. The fluorescent marking material in the storage cylinder 6 is sprayed onto the side wall of the pipe 3 through the spray pipe 601.

[0024] Reference Figure 3 , Figure 4 In practice, the upper detection sleeve 1 and the lower detection sleeve 2 are also fixedly connected to a replenishment pipe, which is used to replenish sufficient fluorescent marker material into the storage cylinder 6 after the detection.

[0025] Both the upper detection sleeve 1 and the lower detection sleeve 2 are fixedly connected with filling bladders 5. When the two sets of filling bladders 5 are inflated, the two sets of symmetrically arranged filling bladders 5 abut against each other. After the filling bladders 5 are inflated, they fill the gap between the detection sleeve and the side wall of the pipe 3.

[0026] An air pump 4 is fixedly connected to both the upper detection sleeve 1 and the lower detection sleeve 2. A three-way pipe 401 is fixedly connected to the air outlet of the air pump 4. A first air supply pipe 4011 and a second air supply pipe 4012 are fixedly connected to the three-way pipe 401. The first air supply pipe 4011 is connected to the detection bladder 7, and the second air supply pipe 4012 is connected to the filling bladder 5.

[0027] Both the upper detection sleeve 1 and the lower detection sleeve 2 are fixedly connected with a first magnet 9, and the two sets of symmetrically arranged first magnets 9 attract each other.

[0028] Both the upper detection sleeve 1 and the lower detection sleeve 2 are fixedly connected with first sealing gaskets 8. When the two sets of first magnets 9 attract each other, the two sets of symmetrically arranged first sealing gaskets 8 abut against each other.

[0029] A second magnet 11 is fixedly connected to both the upper detection sleeve 1 and the lower detection sleeve 2, and the two symmetrically arranged second magnets 11 attract each other.

[0030] Both the upper detection sleeve 1 and the lower detection sleeve 2 are fixedly connected with second sealing gaskets 10. When the two sets of second magnets 11 attract each other, the two sets of symmetrically arranged second sealing gaskets 10 abut against each other.

[0031] Reference Figure 4 A first pressure relief pipe 501 is fixedly connected to the filling bladder 5, and a second pressure relief pipe 703 is fixedly connected to the detection bladder 7. Both the first pressure relief pipe 501 and the second pressure relief pipe 703 are fixedly connected to a commercially available pressure relief valve.

[0032] Reference Figures 1-9 In use, two sets of upper detection sleeves 1 are connected above pipe 3, and two sets of lower detection sleeves 2 are connected below pipe 3. Then, the symmetrical upper detection sleeves 1 and lower detection sleeves 2 are fixed by adsorption using the first magnet 9 and the second magnet 11. At this time, the symmetrical first sealing gasket 8 and the second sealing gasket 10 are tightly pressed together to form a preliminary seal. The operator then starts the air pump 4, and the gas is diverted through the three-way pipe 401. The gas enters the filling bladder 5 through the second gas supply pipe 4012. After the filling bladder 5 is inflated, it completely fills the gap between the detection sleeve and the side wall of the pipe 3, further enhancing the sealing between the device and the pipe 3. The gas enters the detection bladder 7 through the first gas supply pipe 4011. After the detection bladder 7 is inflated, the gas supply to the detection bladder 7 stops when the amount of gas input reaches the detection set standard. After the pressure of the detection bladder 7 stabilizes, the pressure sensor 702 records the initial pressure value and transmits it to the computer platform. Reference Figure 4 The booster pipe 701 is equipped with a commercially available electromagnetic pressure relief valve, which is electrically connected to an external computer platform.

[0033] Reference Figures 3-7 The device is kept running stably for 30-60 minutes. During this period, four sets of pressure sensors 702 monitor the pressure changes of the detection bladder 7 at the corresponding location in real time and continuously upload the data to the computer platform. The computer platform automatically compares the initial pressure with the real-time pressure: if the pressure change is within the preset threshold, it is determined that there is no leakage; if the pressure change exceeds the threshold, it is determined that there is a leak in the corresponding area. At this time, the electromagnetic pressure relief valve on the pressure boosting pipe 701 is opened, and the gas in the detection bladder 7 is conducted to the storage cylinder 6 through the pressure boosting pipe 701. At this time, the pressure in the storage cylinder 6 increases, and the fluorescent marking material is accurately sprayed onto the leak location of the pipeline 3 through the spray pipe 601 to complete the marking.

[0034] By monitoring the pressure changes inside the detection chamber 7 in real time through the pressure sensor 702 and combining the data analysis of the computer platform, it is possible to accurately determine whether the pipe 3 is leaking. Compared with traditional detection methods, this effectively avoids the error of human judgment. In particular, it can detect even minor leaks such as air leaks at the connection. At the same time, when a leak is detected, the pressure booster pipe 701 is used to pressurize the storage cylinder 6, so that the fluorescent marking material is sprayed onto the side wall of the pipe 3 through the spray pipe 601. The location of the leak can be clearly marked, which is convenient for subsequent maintenance operations. No additional positioning procedures are required, which improves the efficiency of subsequent maintenance work.

[0035] By setting the detection device as two detachable and separate detection sleeves, and by using the adsorption of the first magnet 9 and the second magnet 11, as well as the gap filling after the filling bag 5 is inflated, the detection sleeve and the pipeline 3 can be quickly installed and sealed. After the detection is completed, the gas can be discharged through the pressure relief valve, and the detection sleeve can be easily removed. The operation is simple and saves a lot of installation and disassembly time. It solves the problem that the bottom space of the prefabricated detection sleeve in the prior art is not convenient for installation.

[0036] After the test is completed, open the pressure relief valves on the first pressure relief pipe 501 and the second pressure relief pipe 703 to slowly release the gas in the filling bladder 5 and the detection bladder 7. After the bladder is fully contracted, separate the first magnet 9 and the second magnet 11, and remove the upper detection sleeve 1 and the lower detection sleeve 2. Replenish the fluorescent marker material to the storage cylinder 6 through the replenishment pipe for use in the next test.

[0037] Both the first magnet 9 and the second magnet 11 are strong magnets.

[0038] Reference Figures 6-9 By setting the first magnet 9 and the second magnet 11 as strong magnets, the connection stability between the upper detection sleeve 1 can be ensured, and the connection stability between the upper detection sleeve 1 and the lower detection sleeve 2 can also be guaranteed.

[0039] Both the first gas supply pipe 4011 and the booster pipe 701 are flexible hoses.

[0040] Reference Figure 4 One-way valves are installed on the first gas supply pipe 4011, the second gas supply pipe 4012, and the booster pipe 701.

[0041] Reference Figure 3 , Figure 4 By setting the first gas supply pipe 4011 and the pressurization pipe 701 as flexible hoses, it is possible to prevent the rigidly set first gas supply pipe 4011 and pressurization pipe 701 from affecting the inflation of the detection bladder 7 when it is inflated.

[0042] Example 2: A method for detecting water pipe leaks, using a water pipe leak detection device, comprises the following steps: Step 1: Connect the two sets of upper detection sleeves 1 above the pipe 3 and let them connect naturally; connect the two sets of lower detection sleeves 2 below the pipe 3 and let them connect naturally; fix the symmetrically arranged upper detection sleeves 1 and lower detection sleeves 2 by the adsorption of the first magnet 9 and the second magnet 11. At this time, the symmetrical first sealing gasket 8 and the second sealing gasket 10 are tightly abutted to form a preliminary sealing structure. Step 2: Start the air pump 4. The gas is split through the three-way pipe 401: it enters the filling bladder 5 through the second air supply pipe 4012. After the filling bladder is inflated, it completely fills the gap between the detection sleeve and the side wall of the pipe 3, enhancing the sealing between the device and the pipe; it enters the detection bladder 7 through the first air supply pipe 4011. The detection bladder 7 is inflated and fits against the surface of the pipe. Once the gas volume inside the detection bladder 7 reaches the set standard and the pressure stabilizes, the pressure sensor 702 detects and records the initial pressure value and transmits it synchronously to the computer platform. Step 3: Keep the device running for 30-60 minutes. During this period, the four sets of pressure sensors 702 monitor the pressure changes in the detection bladder 7 in real time and upload the data to the computer platform. If the computer platform analyzes and determines that the pressure change is within the preset threshold, it is determined that there is no leakage. If the pressure change exceeds the threshold, it is determined that there is a leak in the corresponding area. At this time, the computer platform controls the electromagnetic pressure relief valve on the pressure boosting pipe 701 to open. The gas in the detection bladder 7 enters the storage cylinder 6 through the pressure boosting pipe 701, pushing the fluorescent marking material through the spray pipe 601 to accurately spray it onto the leak location in the pipeline 3, thus completing the marking. Step 4: After the test is completed, open the pressure relief valves on the first pressure relief pipe 501 and the second pressure relief pipe 703 to slowly release the gas in the filling bladder 5 and the detection bladder 7; after the bladder is completely contracted, separate the first magnet 9 and the second magnet 11, and remove the upper detection sleeve 1 and the lower detection sleeve 2; replenish the fluorescent marker material to the storage cylinder 6 through the replenishment pipe to prepare for the next test.

[0043] Example 3: Reference Figure 10 A water pipe leakage detection device is basically the same as that in Embodiment 1. Furthermore, multiple sets of electrochemical chlorine gas sensors 301 are fixedly connected to the side wall of the pipe 3. The driving end of the electrochemical chlorine gas sensor 301 is placed in the pipe 3, and the electrochemical chlorine gas sensor 301 is electrically connected to an external computer platform. In practical implementation, the electrochemical chlorine sensor 301 can be a commercially available Honeywell sensor, model XCD-CL2.

[0044] In practical use, the electrochemical chlorine sensor 301 inside pipe 3 continuously monitors the residual chlorine concentration within pipe 3 and transmits the monitored residual chlorine concentration data to the computer platform in real time. The computer platform receives the residual chlorine concentration data transmitted by the electrochemical chlorine sensor 301. When the pressure sensor 702 detects a potential leak in the pipe, the computer platform will further analyze the residual chlorine concentration monitored by the electrochemical chlorine sensor 301 at that time. If an abnormal drop in residual chlorine concentration occurs near the leak area, it can help determine the severity of the leak and whether excessive residual chlorine loss has occurred due to the leak, providing data support for subsequent control (such as adjusting the chlorination dosage of the water plant based on the residual chlorine level).

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water pipe leakage detecting apparatus characterized by comprising: The utility model relates to a kind of pipe detection devices, including: Two groups of upper detection sleeves (1) and two groups of lower detection sleeves (2) are detachably connected on pipeline (3), two groups of the upper detection sleeve (1) are connected, two groups of the lower detection sleeve (2) are connected, and the upper detection sleeve (1) and the lower detection sleeve (2) symmetrically set are detachably connected; Pressure sensor (702) is fixedly connected in the detection sac (7) in the upper detection sleeve (1) and the lower detection sleeve (2), and the detection sac (7) is fixedly connected in the detection sac (7); Storage cylinder (6) is fixedly connected in the upper detection sleeve (1) and the lower detection sleeve (2), and the storage cylinder (6) is fixedly connected with spray tube (601) on the storage cylinder (6), and the discharge end of the spray tube (601) is towards the side wall of the pipeline (3). The utility model discloses a kind of pipe detection devices, including: When detecting, two groups of upper detection sleeve (1) and two groups of lower detection sleeve (2) are connected correspondingly, the detection sac (7) is inflated, the initial pressure in the detection sac (7) is detected by the pressure sensor (702), after 30-60 minutes, the pressure in the detection sac (7) is detected secondly by pressure sensor (702), the initial detection pressure and the second detection pressure are analyzed and compared, and the storage cylinder (6) is pressurized by the pressurizing pipe (701), and the fluorescent marker material in the storage cylinder (6) is sprayed on the side wall of the pipeline (3) by the spray tube (601).

2. The water pipe leakage detecting apparatus according to claim 1, wherein The utility model discloses a kind of pipe detection devices, including:

3. The water pipe leakage detecting apparatus according to claim 2, wherein When the upper detection sleeve (1) and the lower detection sleeve (2) are fixedly connected with filling sac (5) on, when the filling sac (5) of two groups is inflated, two groups of symmetrically set filling sac (5) are abutted, and the gap between the filling detection sleeve and the side wall of the pipeline (3) is filled after the filling sac (5) is inflated.

4. The water pipe leakage detecting apparatus according to claim 1, wherein The utility model discloses a kind of pipe detection devices, including:

5. The water pipe leakage detecting apparatus according to claim 4, wherein The utility model discloses a kind of pipe detection devices, including:

6. The water pipe leakage detecting apparatus according to claim 5, wherein The utility model discloses a kind of pipe detection devices, including:

7. The water pipe leakage detecting apparatus according to claim 6, wherein The utility model discloses a kind of pipe detection devices, including:

8. The water pipe leakage detecting apparatus according to claim 1, wherein The utility model discloses a kind of pipe detection devices, including:

9. The water pipe leakage detecting apparatus according to claim 1, wherein The utility model discloses a kind of pipe detection devices, including: The utility model discloses a kind of pipe detection devices, including: The first magnet (9) and the second magnet (11) are all strong magnet. The first gas pipe (4011) and the pressurizing pipe (701) are all elastic hose.

10. A water pipe leakage detecting method using the water pipe leakage detecting apparatus according to claim 3, characterized by, The steps are as follows: Step one, install two sets of upper detection sets (1) and two sets of lower detection sets (2) on the pipeline (3), so that the symmetrically arranged upper detection sets (1) and lower detection sets (2) are preliminarily connected and fixed; Step two, start the air pump (4), the gas generated by the air pump (4) is input into the detection capsule (7) through the first gas pipe (4011) and the second gas pipe (4012) through the three-way pipe (401) respectively; the filling capsule (5) is inflated, and the gap between the filling detection set and the side wall of the pipeline (3) is filled; the detection capsule (7) is inflated, and the initial pressure in the detection capsule (7) is detected by the pressure sensor (702); Step three, after 30-60 minutes of detection, the pressure sensor (702) detects the pressure in the detection capsule (7) again, and uploads the pressure detection signals of the two times to the computer platform, and compares the initial detection pressure and the secondary detection pressure through the computer platform; if the pressure change exceeds the threshold value, the pipeline (3) leaks, at this time, the pressure in the storage cylinder (6) is increased through the pressure increasing pipe (701), and the fluorescent marking material in the storage cylinder (6) is sprayed on the side wall of the pipeline (3) through the material spraying pipe (601) to mark the water leakage position; Step four, after the detection is completed, the gas in the detection capsule (7) and the filling capsule (5) is discharged, and the upper detection set (1) and the lower detection set (2) are removed.

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