Underground pipe network water leakage detection device with alarm function

Abstract

The invention discloses an underground pipe network water leakage detection device with an alarm function, which comprises a supporting bottom plate, a stabilizing frame is mounted above the supporting bottom plate, a slide rail controller is arranged in front of the right side of the stabilizing frame, and a pipeline body is arranged in the middle of the supporting bottom plate. According to the underground pipe network water leakage detection device with the alarm function, the alarm mechanism is arranged, water leakage detection can be carried out on a circle of a pipeline sealing connector through an ultrasonic flaw detector, and therefore the detection precision is greatly improved, meanwhile, when the water leakage condition is detected, the ultrasonic flaw detector can immediately give an alarm, and the detection efficiency is improved. According to the water leakage detection device, the water leakage detection condition is provided for detection personnel in real time, meanwhile, the limiting mechanism is arranged and can limit the position of the pipeline during detection, so that it can be guaranteed that in the detection process, the position of the pipeline cannot deviate, in addition, the water circulation mechanism is arranged, water for detection can be recycled, and waste of water resources is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of underground pipe network water leakage detection, in particular to an underground pipe network water leakage detection device with an alarm function. Background Art

[0002] Underground pipeline networks are a core component of urban infrastructure and the "blood vessels" of modern cities. They refer to various types of pipeline systems buried underground, including water supply, drainage, gas, electricity, communications, and other pipelines and their ancillary facilities. To ensure the normal transportation and discharge of resources, water leakage detection is required before the pipeline network is put into use.

[0003] For example, the invention patent application with publication number CN112857707A discloses an underground pipeline leakage detection device and detection method, wherein a detection pipeline is placed through a box body, and a sealing device is provided on the box body for sealing both ends of the detection pipeline. The sealing device includes a sealing cap that is sleeved on both ends of the detection pipeline, a locking plate provided on the sealing cap, and a locking sleeve provided on the sealing cap. The locking sleeve is configured as a tapered structure at one end near the locking plate. The locking sleeve is threadedly engaged with the sealing cap and is used to squeeze and lock the locking plate. This application has the effect of reducing the sealing force of the detection pipeline and improving detection efficiency.

[0004] However, the above technical solution still has some shortcomings. Combining the existing solution and the actual production and processing, the current detection device detects the water leakage of the pipeline by placing the pipeline in water to observe whether bubbles appear. However, using this method for testing, the test accuracy is insufficient, and the tested water cannot be recycled, which will greatly waste water resources. Therefore, we propose an underground pipe network leakage detection device with an alarm function to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an underground pipe network leakage detection device with an alarm function to solve the problem of the underground pipe network leakage detection device proposed in the above-mentioned background technology. In combination with the existing scheme and the actual production and processing, the current method is to place the pipe in water to observe whether bubbles appear, so as to detect the leakage of the pipe. However, the test accuracy is insufficient when using this method, and the water after testing cannot be recycled, which will greatly waste water resources.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an underground pipe network water leakage detection device with an alarm function, comprising:

[0007] A supporting base plate, wherein a stabilizing frame is installed above the supporting base plate, a slide rail controller is provided in front of the right side of the stabilizing frame, and a pipeline body is provided in the middle of the supporting base plate;

[0008] Also includes:

[0009] An alarm mechanism for improving detection accuracy is provided on the outer side of the middle portion of the pipe body, and limiting mechanisms for preventing deviation are symmetrically provided on the left and right sides of the exterior of the pipe body.

[0010] By adopting the above technical solution, an alarm mechanism is set up on the outer side of the middle part of the pipeline body. When a water leakage is detected, the ultrasonic flaw detector will immediately sound an alarm and provide the inspection personnel with real-time water leakage detection information. At the same time, limit mechanisms are symmetrically set on the left and right sides of the outside of the pipeline body to limit the position of the pipeline body and ensure that subsequent inspections of the pipeline body will not cause position deviation.

[0011] As a preferred technical solution of the present invention, the alarm mechanism arranged on the outer side of the middle part of the pipe body includes a circular slide rail, an ultrasonic flaw detector, a moving block, a screw rod and a second motor. The outer side of the middle part of the pipe body is symmetrically arranged with a circular slide rail, and an ultrasonic flaw detector is arranged above the middle part of the circular slide rail. The moving block is fixedly installed on the outside of the circular slide rail, and the rear side of the moving block is internally threaded with a screw rod, and the lower end of the screw rod is connected to the second motor.

[0012] By adopting the above technical solution, an alarm mechanism is formed by combining a circular slide rail, an ultrasonic flaw detector, a moving block, a screw and a second motor, which can perform water leakage detection around the sealing interface of the pipeline body, thereby greatly improving the detection accuracy. At the same time, if a water leakage is detected, the ultrasonic flaw detector will immediately sound an alarm and provide the detection personnel with real-time water leakage detection information.

[0013] As a preferred technical solution of the present invention, the limiting mechanisms symmetrically arranged on the left and right sides of the outside of the pipe body include a limiting plate, a fixed rod, a rotating plate, a stabilizing rod, a sliding block, a sliding frame, an electric telescopic rod and a fixed slot. The limiting plates are symmetrically arranged on the left and right sides of the outside of the pipe body, and the inside of the limiting plate is tightly fitted with the pipe body, and a fixed rod is installed on the outside of the limiting plate, and a rotating plate is rotatably connected to the bottom of the fixed rod, and a stabilizing rod is rotatably connected to the bottom of the outside of the rotating plate, the lower end of the rotating plate is rotatably connected to the support base plate, and the outside of the stabilizing rod is connected to the sliding block, and the sliding block is slidably arranged on the inside of the sliding frame, and the outside of the sliding frame is fixedly connected to the electric telescopic rod, and the fixed rod is arranged inside the support base plate.

[0014] By adopting the above technical solution, a limiting mechanism is formed by combining a limiting plate, a fixed rod, a rotating plate, a stabilizing rod, a sliding block, a sliding frame, an electric telescopic rod and a fixed groove, thereby ensuring that the pipeline body will not be offset in position during the detection process.

[0015] As a preferred technical solution of the present invention, a fixing plate is symmetrically provided in the front and rear portions of the middle portion of the support base plate, and the fixing plate is located below the middle portion of the pipe body.

[0016] By adopting the above technical solution, a fixing plate is provided below the supporting base plate, and the fixing plate can play a supporting role in clamping and fixing the pipeline body.

[0017] As a preferred technical solution of the present invention, a connecting plate is fixedly installed on the outer side of the fixing plate, a pushing rod is fixedly installed below the connecting plate, and a supporting frame is slidably connected to the outer side of the pushing rod.

[0018] By adopting the above technical solution, the position can be moved by the fixing plate, thereby not affecting the subsequent detection of the pipeline body.

[0019] As a preferred technical solution of the present invention, the outer side of the push rod is connected to a push column, the outer side of the push column is rotatably connected to a rotating rod, and the left side of the rotating rod is connected to a first motor.

[0020] By adopting the above technical solution, the movement of the fixed plate is facilitated.

[0021] As a preferred technical solution of the present invention, a sealing plug is tightly fitted on the inner side of the outer side of the pipe body in a left-right symmetrical manner, and a hydraulic cylinder is fixedly connected to the outer side of the sealing plug.

[0022] By adopting the above technical solution, the left and right sides of the pipeline body can be sealed by arranging sealing plugs.

[0023] As a preferred technical solution of the present invention, the right side of the sealing plug is fixedly connected to a water inlet pipe, the lower side of the water inlet pipe is connected to a water pump, and the lower end of the water inlet pipe is connected to the water tank body.

[0024] By adopting the above technical solution, a water inlet pipe is connected through the right side of the sealing plug to facilitate the transmission of the tested water into the interior of the pipe body.

[0025] As a preferred technical solution of the present invention, a first drain pipe is fixedly connected to the left side of the water tank body, and a water receiving box is connected to the left front of the first drain pipe, and a water pump is provided in the middle of the first drain pipe, and a second drain pipe is fixedly connected to the left side of the water receiving box, and a sealing plug is fixedly connected to the upper right side of the second drain pipe.

[0026] By adopting the above technical solution, the water recycling is facilitated by arranging the connection of components such as the water receiving box, the second drainage pipe, the first drainage pipe and the water pump.

[0027] As a preferred technical solution of the present invention, a filter is provided inside the water receiving box, and mounting blocks are symmetrically installed on the left and right sides above the filter, and the mounting blocks are engaged with the locking blocks, and the locking blocks are symmetrically fixed on the outside of the water receiving box.

[0028] By adopting the above technical solution, the filter screen provided inside the water receiving tank is easy to disassemble, which provides convenience for subsequent cleaning.

[0029] Compared with the prior art, the present invention has the following beneficial effects: the underground pipe network water leakage detection device with an alarm function, by providing an alarm mechanism, can use an ultrasonic flaw detector to perform water leakage detection on a circle around the pipe sealing interface, thereby greatly improving the detection accuracy; at the same time, when a water leakage is detected, the ultrasonic flaw detector will immediately issue an alarm, providing the detection personnel with the water leakage detection status in real time; at the same time, a limit mechanism is provided to limit the position of the pipeline during detection, thereby ensuring that the pipeline will not be offset during the detection process; in addition, a water circulation mechanism is provided to enable the water used for detection to be recycled, thereby avoiding the waste of water resources;

[0030] 1. A fixing plate is provided above the middle of the supporting base plate. When the pipeline body needs to be inspected, the pipeline body can be placed on the upper side of the fixing plate, thereby reducing the manpower required to support the pipeline body.

[0031] 2. A limit plate is provided. By symmetrically setting the limit plates on the upper side of the support base, the limit plates can be adjusted in position. When the pipe body is placed on the upper side of the fixed plate set above the middle of the support base, the limit plates can be adjusted inward to clamp and fix the outer sides of the pipe body, thereby ensuring that the pipe body will not be offset during the inspection process, which can greatly improve the inspection accuracy.

[0032] 3. A water receiving box and a filter are provided. The water receiving box is provided in the middle of the supporting bottom plate and is located below the middle of the pipe body. When water enters the pipe body, if there is a leak at the connection of the pipe body, the water will enter the water receiving box. A filter is provided inside the water receiving box to filter the water entering the water receiving box. The water is then connected to the water tank body through the first drain pipe. That is, the filtered water in the water receiving box can re-enter the water tank body for reuse.

[0033] 4. A filter is provided. By setting a filter inside the water receiving box, the water can be effectively filtered. At the same time, the filter is also easy to remove from the inside of the water receiving box for replacement and cleaning;

[0034] 5. A circular slide rail and an ultrasonic flaw detector are provided. The circular slide rails are symmetrically arranged on the upper and lower sides of the middle part of the pipeline body, and the ultrasonic flaw detector is arranged on the upper part of the circular slide rail. That is, the ultrasonic flaw detector can move inward to form a circular ring. That is, the ultrasonic flaw detector can slide inside the circular slide rail to perform all-round detection of the sealing part of the pipeline body connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the overall perspective structure of the present invention;

[0036] Figure 2 This is a perspective structural diagram of the connection between the pipeline body, the sealing plug and the hydraulic cylinder of the present invention;

[0037] Figure 3 This is a perspective structural diagram of the connection between the water inlet pipe, water pump and water tank body of the present invention;

[0038] Figure 4 This is a perspective cross-sectional structural diagram of the present invention;

[0039] Figure 5 This is a perspective structural diagram of the connection between the limiting plate, the fixing rod and the rotating plate of the present invention;

[0040] Figure 6 This is a perspective structural diagram of the connection between the stabilizing rod, the sliding block and the sliding frame of the present invention;

[0041] Figure 7 This is a perspective structural diagram of the connection between the circular slide rail, ultrasonic flaw detector and moving block of the present invention;

[0042] Figure 8 This is a perspective structural diagram of the connection between the water receiving box, the filter screen and the mounting block column of the present invention;

[0043] Figure 9 This is a perspective structural diagram of the connection between the support frame, the push column and the rotating rod of the present invention.

[0044] In the figure: 1. Support base plate; 2. Fixed plate; 3. Connecting plate; 4. Push rod; 5. Support frame; 6. Push column; 7. Rotating rod; 8. First motor; 9. Pipe body; 10. Sealing plug; 11. Hydraulic cylinder; 12. Water inlet pipe; 13. Water pump; 14. Water tank body; 15. First drain pipe; 16. Second drain pipe; 17. Limiting plate; 18. Fixed rod; 19. Rotating plate; 20. Stabilizing rod; 21. Sliding block; 22. Sliding frame; 23. Electric telescopic rod; 24. Fixed groove; 25. Circular slide rail; 26. Ultrasonic flaw detector; 27. Moving block; 28. Screw; 29. Second motor; 30. Water receiving tank; 31. Filter screen; 32. Mounting block; 33. Engaging block; 34. Stabilizing frame; 35. Slide rail controller. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] See also Figures 1-9 , the present invention provides a technical solution:

[0047] In order to solve the problems existing in the prior art, this embodiment adopts the following technical solutions, namely, an underground pipe network water leakage detection device with an alarm function, comprising:

[0048] The support base plate 1 has an alarm function mechanism, which is arranged on the outside of the middle part of the pipe body 9. It can form a ring at the connection of the middle and outer parts of the pipe body 9 and can rotate 360 degrees, so that the connection of the pipe body 9 can be fully detected. When a water leak is found, an alarm can be immediately issued; the limit mechanism is arranged on the left and right sides of the outside of the pipe body 9, which can limit the left and right sides of the outside of the pipe body 9, thereby ensuring that the pipe body 9 will not move during the water leak detection, thereby improving the detection accuracy; the water circulation mechanism is arranged on the outside of the pipe body 9, which can recycle the water used in the detection of the pipe body 9, thereby greatly improving the utilization rate of water;

[0049] In the above technical solution, if Figure 1 、 Figure 8 and Figure 9As shown, the connected pipe body 9 can be placed above the fixed plate 2, and the connection of the pipe body 9 is located above the middle of the fixed plate 2. At this time, the limit plates 17 are symmetrically set on the front and back sides of the outside of the pipe body 9, and the outside of the limit plate 17 is fixedly installed with a fixed rod 18, and the lower outer side of the fixed rod 18 is rotatably connected to the rotating plate 19, and the lower side of the rotating plate 19 is connected to the stabilizing rod 20. At the same time, the lower side of the rotating plate 19 is rotatably connected to the supporting base plate 1, and the outer side of the stabilizing rod 20 is rotatably connected to the sliding block 21, and the sliding of the sliding block 21 is set on the sliding frame 22. On the inside, the electric telescopic rod 23 connected to the outer end of the sliding frame 22 can be opened, and the output end of the electric telescopic rod 23 can push the sliding frame 22 to move inward. At this time, the sliding block 21 can slide inward, and the stabilizing rod 20 connected to the sliding block 21 will rotate. At this time, the rotating plate 19 will also rotate, pushing the connected fixed rod 18 to move inward. The fixed rod 18 will slide inside the fixing groove 24 provided inside the supporting base plate 1. At this time, the limit plate 17 will also move inward and fit with the outer side of the pipe body 9, thereby limiting the position of the pipe body 9;

[0050] Sealing plugs 10 are symmetrically installed on the left and right sides of the exterior of the pipe body 9, and a hydraulic cylinder 11 is installed on the exterior of the sealing plugs 10. When the hydraulic cylinder 11 is opened, the output of the hydraulic cylinder 11 can push the sealing plug 10 inward, that is, the inner side of the sealing plug 10 can fit with the inner side of the tail end of the pipe body 9, thereby sealing both ends of the pipe body 9;

[0051] Furthermore, in this technical solution, if Figure 1 、 Figure 6 and Figure 7 As shown, after the position of the pipe body 9 is fixed, the first motor 8 can be turned on. At this time, the rotating rod 7 connected to the right side of the first motor 8 will rotate, which will pull the connected pushing column 6 to rotate, and the pushing rod 4 connected to the inside of the pushing column 6, that is, when the pushing column 6 rotates, the inner side of the pushing column 6 will pull the pushing rod 4 to move outward inside the support frame 5. At this time, the connecting plate 3 installed on the inner side of the pushing rod 4 will also move together, and at the same time, the fixing plate 2 is installed on the inner side of the connecting plate 3, that is, the fixing plate 2 will also move outward, that is, the connecting plate 3 will be separated from the lower middle part of the pipe body 9, that is, the setting of the fixing plate 2 is to save manpower in lifting the pipe body 9 and help the pipe body 9 to better limit the position, and the movement of the fixing plate 2 is for subsequent more effective detection of the pipe body 9;

[0052] At the same time, in this technical solution, Figure 2 、 Figure 3 and Figure 4As shown, after the fixing plate 2 is separated from the lower middle part of the pipe body 9, circular slide rails 25 are provided on the upper and lower sides of the pipe body 9, and a moving block 27 is installed on the outer side of the circular slide rail 25. The rear side of the moving block 27 is threadedly connected to the screw rod 28, and the lower end of the screw rod 28 is connected to the second motor 29. In addition, the rear side of the moving block 27 is slidably connected to the limit rod for limiting. Then, the second motor 29 can be turned on, that is, the screw rod 28 can rotate. At this time, the moving block 27 threadedly connected to the outer side of the screw rod 28 will move inward, that is, the circular slide rail 25 will form a ring on the outer side of the middle part of the pipe body 9.

[0053] The outside of the sealing plug 10 installed on the right side of the outside of the pipe body 9 is connected to the water inlet pipe 12, and the bottom of the water inlet pipe 12 is fixedly connected to the water tank body 14. When the water pump 13 connected to the bottom of the water inlet pipe 12 is turned on, the water in the water tank body 14 can be pumped into the inside of the pipe body 9;

[0054] An ultrasonic flaw detector 26 is installed on the upper part of the circular slide rail 25, and the slide rail controller 35 installed on the right side of the stabilizing frame 34 can be activated to make the ultrasonic flaw detector 26 rotate 360 degrees inside the circular slide rail 25, so as to facilitate the full range of water leakage detection at the connection of the pipe body 9. If a water leakage is found, an alarm can be generated.

[0055] If there is a water leak at the connection of the pipe body 9, the water will flow into the water receiving box 30 provided at the lower middle part of the pipe body 9. A filter screen 31 is provided inside the water receiving box 30 to effectively filter the water. The front side of the water receiving box 30 is connected to the water tank body 14 through the first drain pipe 15, and the water pump 13 provided in the middle of the first drain pipe 15 can be turned on to transfer the filtered water to the inside of the water tank body 14 for recycling. In addition, the outside of the sealing plug 10 installed on the left side of the outside of the pipe body 9 is fixedly connected to the second drain pipe 16, and the lower right side of the second drain pipe 16 is fixedly connected to the water receiving box 30. That is, when the pipe body 9 is tested, the water tested inside the pipe body 9 can be pumped into the water receiving box 30 for filtration, and then enter the inside of the water tank body 14 for recycling.

[0056] Secondly, mounting blocks 32 are symmetrically installed on the left and right sides above the filter 31 set inside the water receiving box 30, and the mounting blocks 32 are engaged with the engaging blocks 33 symmetrically installed on the left and right sides outside the water receiving box 30, that is, the filter 31 is easy to remove, replace and clean.

[0057] This is the entire working process of an underground pipe network water leakage detection device with an alarm function. Contents not described in detail in this specification belong to the existing technology well known to professional and technical personnel in this field.

[0058] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An underground pipe network water leakage detection device with an alarm function, comprising: A supporting base plate (1), wherein a stabilizing frame (34) is installed above the supporting base plate (1), a slide rail controller (35) is provided in front of the right side of the stabilizing frame (34), and a pipe body (9) is provided in the middle of the supporting base plate (1); It is characterized by further comprising: An alarm mechanism for improving detection accuracy is provided on the outside of the middle portion of the pipe body (9), and limiting mechanisms for preventing deviation are symmetrically provided on the left and right sides of the outside of the pipe body (9).

2. The underground pipe network water leakage detection device with alarm function according to claim 1, characterized in that: The alarm mechanism arranged on the outer side of the middle part of the pipe body (9) comprises a circular slide rail (25), an ultrasonic flaw detector (26), a moving block (27), a screw rod (28) and a second motor (29). The circular slide rail (25) is symmetrically arranged on the outer side of the middle part of the pipe body (9) in an upper and lower manner, and the ultrasonic flaw detector (26) is arranged above the middle part of the circular slide rail (25). The moving block (27) is fixedly installed on the outside of the circular slide rail (25), and the rear side of the moving block (27) is internally threadedly connected to the screw rod (28). The lower end of the screw rod (28) is connected to the second motor (29).

3. The underground pipe network water leakage detection device with alarm function according to claim 1, characterized in that: The limiting mechanism symmetrically arranged on the left and right sides of the exterior of the pipe body (9) comprises a limiting plate (17), a fixed rod (18), a rotating plate (19), a stabilizing rod (20), a sliding block (21), a sliding frame (22), an electric telescopic rod (23) and a fixing groove (24). The limiting plate (17) is symmetrically arranged on the left and right sides of the exterior of the pipe body (9), and the interior of the limiting plate (17) is tightly fitted with the pipe body (9), and the fixing rod (18) is installed on the outside of the limiting plate (17), and the bottom of the fixing rod (18) is rotated. A rotating plate (19) is connected, and a stabilizing rod (20) is rotatably connected to the lower outer side of the rotating plate (19). The lower end of the rotating plate (19) is rotatably connected to the supporting base plate (1). The outer side of the stabilizing rod (20) is connected to a sliding block (21), and the sliding block (21) is slidably arranged on the inner side of a sliding frame (22). The outer side of the sliding frame (22) is fixedly connected to an electric telescopic rod (23). The fixed rod (18) is slidably connected to a fixing groove (24), and the fixing groove (24) is arranged inside the supporting base plate (1).

4. An underground pipe network water leakage detection device with an alarm function according to claim 1 or 3, characterized in that: A fixing plate (2) is symmetrically arranged in the front and rear of the middle portion of the supporting base plate (1), and the fixing plate (2) is located below the middle portion of the pipe body (9).

5. The underground pipe network water leakage detection device with alarm function according to claim 4, characterized in that: A connecting plate (3) is fixedly mounted on the outer side of the fixing plate (2), a pushing rod (4) is fixedly mounted on the outer side of the connecting plate (3), and a supporting frame (5) is slidably connected to the outer side of the pushing rod (4).

6. The underground pipe network water leakage detection device with alarm function according to claim 5, characterized in that: The outer side of the pushing rod (4) is connected to a pushing column (6), and the outer side of the pushing column (6) is rotatably connected to a rotating rod (7), and the left side of the rotating rod (7) is connected to a first motor (8).

7. The underground pipe network water leakage detection device with alarm function according to claim 2, characterized in that: A sealing plug (10) is tightly fitted on the inner side of the outer portion of the pipe body (9) in a symmetrical manner, and a hydraulic cylinder (11) is fixedly connected to the outer portion of the sealing plug (10).

8. The underground pipe network water leakage detection device with alarm function according to claim 7, characterized in that: The right side of the sealing plug (10) is fixedly connected to a water inlet pipe (12), the lower side of the water inlet pipe (12) is connected to a water pump (13), and the lower end of the water inlet pipe (12) is connected to a water tank body (14).

9. The underground pipe network water leakage detection device with alarm function according to claim 8, characterized in that: The left side of the water tank body (14) is fixedly connected to a first drain pipe (15), and the left front of the first drain pipe (15) is connected to a water receiving box (30), and a water pump (13) is provided in the middle of the first drain pipe (15), and the left side of the water receiving box (30) is fixedly connected to a second drain pipe (16), and the upper right side of the second drain pipe (16) is fixedly connected to a sealing plug (10).

10. The underground pipe network water leakage detection device with alarm function according to claim 9, characterized in that: The water receiving box (30) is provided with a filter screen (31) inside, and mounting blocks (32) are symmetrically mounted on the left and right sides above the filter screen (31), and the mounting blocks (32) are engaged with the engaging blocks (33), and the engaging blocks (33) are fixedly mounted on the outside of the water receiving box (30) symmetrically.

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