Municipal pipeline water leakage prevention structure

Abstract

The utility model relates to the technical field of municipal engineering pipeline leakage prevention, and discloses a municipal pipeline water leakage prevention structure which comprises a first pipeline, a second pipeline, an inspection mechanism, an anti-blocking mechanism and a flow control mechanism. Precise positioning and preliminary fixing are achieved through cooperation of the first pipeline and the second pipeline by means of a socket hole and a limiting column, a foundation is built for follow-up sealing, the stainless steel leakage-proof sleeve serves as a key component, the stainless steel leakage-proof sleeve is made of 304 stainless steel (the wall thickness is 3 mm) and has good corrosion resistance and mechanical strength, external environment corrosion and pressure during pipeline operation can be resisted, and the service life of the pipeline is prolonged. The combination of the ethylene propylene diene monomer (the hardness is 70 + / -5 Shore A) and the water swelling strip (the swelling ratio is larger than or equal to 250%) is adopted in the stainless steel leakage-proof sleeve, the ethylene propylene diene monomer forms a first sealing barrier by means of high elasticity and aging resistance, the water swelling strip swells rapidly after meeting water and fills tiny gaps, and a leakage path is effectively blocked through double guarantee.

Description

Technical Field

[0001] This application relates to the field of municipal engineering pipeline leak prevention technology, specifically a municipal pipeline leak prevention structure. Background Technology

[0002] Municipal pipeline systems are an important part of urban infrastructure, undertaking important functions such as water supply, drainage, and gas transmission. With the acceleration of urbanization, problems such as pipeline aging, foundation settlement, and external damage have led to frequent pipeline leaks. Every year, the waste of water resources and economic losses caused by pipeline leaks are huge. At present, the industry mainly addresses the leakage problem by improving the performance of pipe materials, optimizing joint sealing technology, and strengthening construction quality control. In recent years, the application of new pipe materials such as high-density polyethylene (HDPE) pipes and ductile iron pipes has significantly improved the overall sealing performance of pipeline systems, but joints are still high-risk areas for leakage.

[0003] Existing technologies generally suffer from problems such as insufficient interface sealing durability, weak resistance to foundation deformation, and inconvenient maintenance. Rubber sealing rings are prone to stress relaxation under long-term water pressure, leading to sealing failure. Welded pipe connections cannot adapt to uneven foundation settlement and are prone to cracking. Flange connections require regular maintenance and bolt tightening, increasing operation and maintenance costs. In addition, existing technologies lack effective means to test the overall sealing performance of the pipeline system, making it difficult to detect potential leakage hazards in a timely manner during the construction phase. To solve the above problems, a leak-proof structure for municipal pipelines is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a leak-proof structure for municipal pipelines, which features a dual-seal design that ensures good interface sealing performance and facilitates real-time water pressure monitoring, thus solving the problems mentioned in the background technology.

[0005] To achieve the above objectives, this application provides the following technical solution: a municipal pipeline anti-leakage structure, comprising a first pipeline, a second pipeline, an inspection mechanism, an anti-blocking mechanism, and a flow control mechanism. The surfaces of both the first and second pipelines are provided with four socket holes. Each of the four socket holes is fitted with a limiting post. The surfaces of both sets of limiting posts are fixedly connected with stainless steel anti-leakage sleeves. The surfaces of both stainless steel anti-leakage sleeves are provided with four fixing plates. The interiors of both sets of fixing plates are threaded with four screws. The interiors of the stainless steel anti-leakage sleeves are provided with EPDM rubber and a water-swellable sealing strip.

[0006] Through the above scheme, the first and second pipes are precisely positioned and initially fixed by means of sockets and limiting posts, laying a solid foundation for subsequent sealing. The stainless steel leak-proof sleeve, as a key component, is made of 304 stainless steel (3mm wall thickness), possessing excellent corrosion resistance and mechanical strength, capable of withstanding external environmental erosion and pipeline operating pressure. The stainless steel leak-proof sleeve internally uses a combination of EPDM rubber (hardness 70±5 Shore A) and a water-swellable sealing strip (expansion ratio ≥250%). The EPDM rubber, with its high elasticity and aging resistance, forms the first sealing barrier. The water-swellable sealing strip expands rapidly upon contact with water, filling tiny gaps, providing double protection and effectively blocking leakage paths. Combined with the tightening of four fixing plates and screws, the sealing structure is more stable, significantly improving the leak-proof effect. An inspection mechanism allows for real-time monitoring of pipeline pressure with a pressure gauge, enabling timely detection of abnormalities. The water injection interface and sealing plug design facilitate pressure testing and sealing inspection. An anti-clogging mechanism actively prevents clogging, using a first drive motor to drive a cutting wheel for rapid removal. The blockage is reduced, lowering the risk of leakage. The structure is stable, with the first support block and first bearing ensuring smooth operation of the first rotating shaft and cutting wheel, extending service life. Installation is convenient, with strong adaptability. The simple fixing connection method facilitates its promotion in various pipeline projects, effectively controlling construction costs and difficulty. By setting a flow control mechanism, precise regulation can be achieved. Fine flow adjustment is realized through the second drive motor driving the control board, reducing the risk of leakage caused by abnormal flow. Stable operation is ensured by the combination of the second support block and the second bearing, which ensures smooth power transmission, reduces component wear, and provides flexible operation. It supports both automatic and manual control modes to adapt to diverse management needs.

[0007] Furthermore, the inspection mechanism includes a test hole opened on the surface of the stainless steel leak-proof sleeve, a pressure gauge is fixedly installed inside the test hole, a water injection interface is fixedly connected to the surface of the stainless steel leak-proof sleeve, and a sealing plug is inserted into the water injection interface.

[0008] Through the above scheme, the inspection agency can monitor the internal pressure of the pipeline in real time through the pressure gauge in the detection hole, intuitively reflecting the pipeline's operating status, and making it easy to detect potential water leakage risks caused by abnormal pressure in a timely manner. The design of the water injection interface and sealing plug facilitates pressure testing and sealing performance inspection, ensuring that the pipeline maintains good sealing performance before being put into use or during operation.

[0009] Furthermore, a fixing box is fixedly connected to the surface of the stainless steel leak-proof sleeve, and a wireless monitoring terminal is fixedly installed inside the fixing box.

[0010] Through the above solution, the installation of wireless monitoring terminals enables remote real-time monitoring of pipeline data. Once abnormal data is detected, early warnings can be issued quickly, improving maintenance efficiency and emergency response capabilities.

[0011] Furthermore, the anti-clogging mechanism includes a first support block fixedly connected to the surface of the first pipe. There are two first support blocks. A first drive motor is fixedly installed on the side of one of the first support blocks via a mounting plate. A first bearing is fixedly connected to the side of each of the two first support blocks. A first rotating shaft is rotatably connected inside the two first bearings. One end of the first rotating shaft is fixedly connected to the output shaft of the first drive motor. Cutting wheels are fixedly connected to the surface of the first rotating shaft. There are four cutting wheels.

[0012] Through the above scheme, the first drive motor in the anti-blocking mechanism drives the first rotating shaft and the cutting wheel to rotate, which can cut and break up any blockages that may appear in the pipeline, effectively preventing water leakage or bursting caused by pipeline pressure imbalance due to the accumulation of blockages. This active anti-blocking design reduces the frequency and cost of manual unblocking and ensures the smooth operation of the pipeline.

[0013] Furthermore, the flow control mechanism includes a second support block fixedly connected to the surface of the second pipe. There are two second support blocks. A second drive motor is fixedly installed on the top of one of the second support blocks via a mounting plate. A second bearing is fixedly connected inside both of the two second support blocks. A second rotating shaft is rotatably connected inside the two second bearings. A control plate is fixedly connected to the surface of the second rotating shaft.

[0014] Through the above scheme, the flow control mechanism drives the control plate on the second rotating shaft to rotate through the second drive motor, thereby achieving precise adjustment of the pipeline flow. Under different usage scenarios and needs, the water flow can be flexibly controlled to avoid impact on the pipeline interface due to excessive flow, thereby reducing the risk of water leakage. At the same time, reasonable flow control helps to improve water resource utilization efficiency and achieve energy saving and consumption reduction.

[0015] Furthermore, both the first pipe and the second pipe are fixedly connected to a base, and each of the two bases has a rubber block at its bottom, with eight rubber blocks in total.

[0016] With the above solution, both the first and second pipes are fixedly connected to bases. The bases increase the contact area between the pipes and the supporting surface, making the pipes more stable and thus improving the stability of the entire pipe system. Each base has eight rubber blocks at the bottom. The rubber blocks have good elasticity and flexibility, which can effectively buffer the vibration and impact force caused by water flow, ground vibration and other factors, reduce pipe wear and damage, extend the service life of the pipes, and also reduce the risk of water leakage caused by loosening of pipe connections due to vibration.

[0017] Furthermore, both the first and second pipes are made of fiberglass reinforced plastic (FRP) pipes.

[0018] Through the above solution, when fiberglass reinforced plastic (FRP) sand-filled pipes are used in the first and second pipelines, they have the characteristics of "four advantages, one long and one good": excellent corrosion resistance, which can resist various chemical erosions; excellent weight, which is convenient for transportation and installation and reduces costs; excellent strength, which can withstand internal and external pressure; excellent smooth inner wall, which reduces water flow resistance and blockage; long service life, which reduces replacement and maintenance; and good designability, which can be customized as needed, thus comprehensively improving the leak-proof performance and operational reliability of municipal pipelines.

[0019] Furthermore, the stainless steel leak-proof sleeve is made of 304 stainless steel with a wall thickness of 3mm, the EPDM rubber is made of EPDM rubber with a hardness of 70±5 Shore A, and the expansion ratio of the water-swellable sealing strip is ≥250%.

[0020] The above solution combines durability, sealing, and adaptive leak prevention: the 304 stainless steel leak-proof sleeve has a wall thickness of 3mm, is corrosion-resistant and has high strength, ensuring structural stability; the EPDM rubber with a hardness of 70±5 Shore A has good elasticity and aging resistance, forming an initial sealing barrier; and the water-swellable waterstop strip with an expansion ratio of ≥250% expands upon contact with water, dynamically filling gaps. The three components work together to significantly improve the leak prevention performance and long-term reliability of municipal pipelines.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This municipal pipeline leak-proof structure achieves precise positioning and initial fixation of the first and second pipes through the cooperation of socket holes and limiting posts, laying a solid foundation for subsequent sealing. The stainless steel leak-proof sleeve, a key component, is made of 304 stainless steel (3mm wall thickness), possessing excellent corrosion resistance and mechanical strength, capable of withstanding external environmental erosion and pipeline operating pressure. The stainless steel leak-proof sleeve internally uses a combination of EPDM rubber (hardness 70±5 Shore A) and a water-swellable sealing strip (expansion ratio ≥250%). The EPDM rubber, with its high elasticity and aging resistance, forms the first sealing barrier. The water-swellable sealing strip rapidly expands upon contact with water, filling tiny gaps, providing double protection and effectively blocking leakage paths. Combined with the tightening of four fixing plates and screws, the sealing structure is further stabilized, significantly improving the leak-proof effect. An inspection mechanism allows for real-time monitoring of pipeline pressure with a pressure gauge, enabling timely detection of anomalies. The water injection interface and sealing plug design facilitate pressure testing and sealing inspection. An anti-clogging mechanism actively prevents clogging, using a first drive motor to drive a cutting wheel for rapid removal. The blockage is reduced, lowering the risk of leakage. The structure is stable, with the first support block and first bearing ensuring smooth operation of the first rotating shaft and cutting wheel, extending service life. Installation is convenient, with strong adaptability. The simple fixing connection method facilitates its promotion in various pipeline projects, effectively controlling construction costs and difficulty. By setting a flow control mechanism, precise regulation can be achieved. Fine flow adjustment is realized through the second drive motor driving the control board, reducing the risk of leakage caused by abnormal flow. Stable operation is ensured by the combination of the second support block and the second bearing, which ensures smooth power transmission, reduces component wear, and provides flexible operation. It supports both automatic and manual control modes to adapt to diverse management needs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall front view structure of this application;

[0024] Figure 2 for Figure 1 Exploded cross-sectional view of the first and second pipes and the stainless steel leak-proof sleeve;

[0025] Figure 3 for Figure 1 Schematic diagram of the side cross-sectional structure of a stainless steel leak-proof sleeve;

[0026] Figure 4 This is a frontal cross-sectional view of the anti-blocking mechanism in this application;

[0027] Figure 5 This is a side view cross-sectional structural diagram of the flow control mechanism in this application.

[0028] In the picture:

[0029] 1. First pipe; 2. Second pipe; 3. Stainless steel leak-proof sleeve; 4. Fixing plate; 5. Screw; 6. Inspection mechanism; 601. Pressure gauge; 602. Water injection interface; 603. Sealing plug; 604. Detection hole; 7. Fixing box; 8. Wireless monitoring terminal; 9. Anti-clogging mechanism; 901. First support block; 902. First bearing; 903. First rotating shaft; 904. First drive motor; 905. Cutting wheel; 10. Flow control mechanism; 1001. Second support block; 1002. Second bearing; 1003. Second rotating shaft; 1004. Second drive motor; 1005. Control board; 11. Base; 12. Rubber block; 13. Limiting post; 14. Socket hole; 15. EPDM rubber; 16. Water-swellable sealing strip. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a municipal pipeline leak-proof structure includes a first pipeline 1, a second pipeline 2, an inspection mechanism 6, an anti-blocking mechanism 9, and a flow control mechanism 10. Both the first pipeline 1 and the second pipeline 2 have four socket holes 14 on their surfaces. Each of the four socket holes 14 has a limiting post 13 inserted into its interior. Stainless steel leak-proof sleeves 3 are fixedly connected to the surfaces of both sets of limiting posts 13. Four fixing plates 4 are provided on the surfaces of both sets of stainless steel leak-proof sleeves 3. Screws 5 are threaded into the interior of both sets of fixing plates 4. The stainless steel leak-proof sleeve 3 has an internal structure of EPDM rubber 15 and a water-swellable sealing strip 16. Through the cooperation of the first pipe 1 and the second pipe 2 with the socket 14 and the limiting post 13, it achieves precise positioning and initial fixation, laying a solid foundation for subsequent sealing. As a key component, the stainless steel leak-proof sleeve 3 is made of 304 stainless steel (wall thickness 3mm), which has good corrosion resistance and mechanical strength, and can resist external environmental erosion and the pressure of pipeline operation. The stainless steel leak-proof sleeve 3 uses a combination of EPDM rubber 15 (hardness 70±5 Shore A) and water-swellable sealing strip 16 (expansion ratio ≥250%). EPDM rubber 15, with its high elasticity and aging resistance, forms the first sealing barrier. The water-swellable sealing strip 16 expands rapidly after contact with water, filling tiny gaps, effectively blocking the leakage path with double protection. With the fastening of the four fixing plates 4 and screws 5, the sealing structure is more stable, significantly improving the leak-proof effect.

[0032] Please see Figure 1 and Figure 3 The inspection mechanism 6 includes a detection hole 604 on the surface of the stainless steel leak-proof sleeve 3. A pressure gauge 601 is fixedly installed inside the detection hole 604. A water injection port 602 is fixedly connected to the surface of the stainless steel leak-proof sleeve 3. A sealing plug 603 is inserted into the water injection port 602. The inspection mechanism 6 monitors the internal pressure of the pipeline in real time through the pressure gauge 601 in the detection hole 604, which directly reflects the operating status of the pipeline and facilitates the timely detection of potential leakage risks caused by abnormal pressure. The design of the water injection port 602 and the sealing plug 603 facilitates pressure testing and sealing inspection, ensuring that the pipeline maintains good sealing performance before being put into use or during operation. A fixing box 7 is fixedly connected to the surface of the stainless steel leak-proof sleeve 3. A wireless monitoring terminal 8 is fixedly installed inside the fixing box 7. The setting of the wireless monitoring terminal 8 realizes remote real-time monitoring of pipeline data. Once abnormal data occurs, it can quickly issue an early warning, improving maintenance efficiency and emergency response capabilities.

[0033] Please see Figure 1 , Figure 4 and Figure 5The anti-blocking mechanism 9 includes two first support blocks 901 fixedly connected to the surface of the first pipe 1. A first drive motor 904 is fixedly mounted on the side of one first support block 901 via a mounting plate. First bearings 902 are fixedly connected to the sides of both first support blocks 901. A first rotating shaft 903 is rotatably connected inside the two first bearings 902. One end of the first rotating shaft 903 is fixedly connected to the output shaft of the first drive motor 904. Four cutting wheels 905 are fixedly connected to the surface of the first rotating shaft 903. The first drive motor 904 in the anti-blocking mechanism 9 drives the first rotating shaft 903 and the cutting wheels 905 to rotate, which can cut and break up any blockages that may appear in the pipe, effectively preventing pipe pressure imbalance caused by blockage accumulation, and thus preventing leaks or bursts. This active anti-blocking design reduces the frequency and cost of manual unblocking and ensures... For smooth pipeline operation, the flow control mechanism 10 includes two second support blocks 1001 fixedly connected to the surface of the second pipeline 2. A second drive motor 1004 is fixedly mounted on the top of one second support block 1001 via a mounting plate. Two second bearings 1002 are fixedly connected inside each of the two second support blocks 1001. A second rotating shaft 1003 is rotatably connected inside the two second bearings 1002. A control plate 1005 is fixedly connected to the surface of the second rotating shaft 1003. The flow control mechanism 10 drives the control plate 1005 on the second rotating shaft 1003 to rotate via the second drive motor 1004, achieving precise adjustment of the pipeline flow. Under different usage scenarios and needs, the water flow can be flexibly controlled, avoiding impact on the pipeline interface due to excessive flow, thereby reducing the risk of leakage. Simultaneously, reasonable flow control helps improve water resource utilization efficiency and achieve energy conservation and consumption reduction.

[0034] Please see Figure 1Both the first pipe 1 and the second pipe 2 are fixedly connected to bases 11. Eight rubber blocks 12 are installed at the bottom of each base 11. The bases 11 increase the contact area between the pipe and the supporting surface, making the pipe more stable and improving the overall stability of the pipeline system. Each base 11 has eight rubber blocks 12 at its bottom. These rubber blocks 12 have good elasticity and flexibility, which effectively buffers the vibration and impact forces caused by water flow and ground vibration, reducing pipe wear and damage, extending the pipe's service life, and also reducing the risk of damage caused by water flow and ground vibration. Vibration can cause loosening of pipe connections, leading to leaks. Pipes 1 and 2 are made of fiberglass reinforced plastic (FRP) with sand-filled cores. When used in pipes 1 and 2, FRP with sand-filled cores offer four advantages, one long service life, and one good feature: excellent corrosion resistance (resisting various chemical erosions), lightweight (facilitating transportation and installation, reducing costs), high strength (withstanding internal and external pressures), smooth inner wall (reducing water flow resistance and blockages), long service life (reducing replacement and maintenance), and good design flexibility (allowing for customization). This comprehensively improves the leak-proof performance and operational reliability of municipal pipelines. The stainless steel leak-proof sleeve 3 is made of 304 stainless steel with a wall thickness of 3mm, and the EPDM rubber 15 has a hardness of 70±5. Shore A's EPDM rubber 15 and water-swellable sealing strip 16 have an expansion ratio of ≥250%. This combination design combines durability, sealing, and self-adaptive leak prevention advantages: the 304 stainless steel leak-proof sleeve has a wall thickness of 3mm, is corrosion-resistant and has high strength, ensuring structural stability, and has a hardness of 70±5. Shore A's EPDM rubber 15 has good elasticity and aging resistance, forming an initial sealing barrier. The water-swellable sealing strip 16 with an expansion ratio of ≥250% expands upon contact with water, dynamically filling gaps. The three work together to significantly improve the leak prevention performance and long-term reliability of municipal pipelines.

[0035] In this embodiment, a municipal pipeline leak-proof structure is described. It should be noted that the first pipeline 1 and the second pipeline 2 achieve precise positioning and initial fixation through the cooperation of the socket 14 and the limiting post 13, laying a solid foundation for subsequent sealing. The stainless steel leak-proof sleeve 3, as a key component, is made of 304 stainless steel (3mm wall thickness), possessing good corrosion resistance and mechanical strength, capable of resisting external environmental erosion and pipeline operating pressure. The interior of the stainless steel leak-proof sleeve 3 is made of EPDM rubber 15 (hardness 70±5 Shore). A) Combined with the water-swellable sealing strip 16 (expansion ratio ≥250%), the EPDM rubber 15, with its high elasticity and aging resistance, forms the first sealing barrier. The water-swellable sealing strip 16 expands rapidly upon contact with water, filling tiny gaps, providing double protection and effectively blocking leakage paths. The four fixing plates 4 and screws 5 further solidify the sealing structure, significantly improving the leak-proof effect. The inspection mechanism 6 allows for real-time monitoring of pipeline pressure using a pressure gauge 601, enabling timely detection of abnormalities. The design of the water injection port 602 and sealing plug 603 facilitates pressure testing and sealing inspection. The anti-clogging mechanism 9 actively prevents clogging, using the first drive motor 904 to drive the cutting wheel 905 to quickly break up blockages. This device reduces the risk of leakage, has a stable structure, and ensures the smooth operation of the first rotating shaft 903 and cutting wheel 905 by the first support block 901 and the first bearing 902, extending their service life. It is easy to install, highly adaptable, and its simple fixed connection method facilitates its application in various pipeline projects, effectively controlling construction costs and difficulty. By setting up a flow control mechanism 10, it can precisely regulate the flow rate, and the second drive motor 1004 drives the control board 1005 to achieve fine flow adjustment, reducing the risk of leakage caused by abnormal flow. It is stable in operation, and the combination of the second support block 1001 and the second bearing 1002 ensures smooth power transmission, reduces component wear, and provides flexible operation. It supports both automatic and manual control modes to meet diverse management needs.

[0036] The working principle of the above embodiment is as follows: First, the first pipe 1 and the second pipe 2 are stably placed in the use position with the help of the base 11 and the rubber block 12. Then, the first pipe 1 and the second pipe 2 are inserted into the limiting post 13 through the four socket holes 14 opened on the surface to achieve initial positioning and connection. The stainless steel anti-leakage sleeve 3 fixedly connected to the surface of the limiting post 13 is fastened to the pipe with the help of four fixing plates 4 and screws 5 to form a stable sealing structure. The EPDM rubber 15 inside the stainless steel anti-leakage sleeve 3 fits the pipe tightly with good elasticity to provide initial sealing. The water-swellable water-stop strip 16 expands after contact with water, fills the tiny gaps, further enhances the sealing performance, and prevents water from leaking from the pipe joint.

[0037] Then, the pressure gauge 601 installed in the detection hole 604 on the surface of the stainless steel leak-proof sleeve 3 monitors the internal pressure of the pipeline in real time. When the pressure is abnormal, it can detect possible water leakage problems in time. The water injection interface 602 can inject water to conduct pressure tests when needed to test the sealing performance of the pipeline. After the test is completed, it is sealed with a sealing plug 603 to prevent foreign objects from entering. The wireless monitoring terminal 8 in the fixing box 7 remotely transmits pipeline operation data (such as pressure) to the monitoring center to realize real-time monitoring of the pipeline so as to detect and deal with potential water leakage risks in time.

[0038] Then, the first drive motor 904 drives the first rotating shaft 903 to rotate, which in turn drives the four cutting wheels 905 to rotate, thereby cutting and breaking up any blockages that may appear in the pipe. After that, the second drive motor 1004 drives the second rotating shaft 1003 to rotate, causing the control board 1005 to rotate. The flow rate in the pipe is adjusted by adjusting the angle of the control board 1005. According to different usage scenarios and needs, the water flow is reasonably controlled to avoid impact on the pipe joints due to excessive flow, reduce the possibility of leakage, and improve the efficiency of water resource utilization.

[0039] Finally, the first pipe 1 and the second pipe 2 are made of fiberglass reinforced plastic (FRP) pipe, which is characterized by strong corrosion resistance, light weight, high strength and smooth inner wall. It can not only adapt to complex underground environments and reduce water leakage caused by corrosion and rupture, but also reduce water flow resistance, improve water delivery capacity, reduce debris accumulation and blockage, and indirectly improve water leakage prevention performance. The stainless steel leak-proof sleeve 3 is made of 304 stainless steel with a wall thickness of 3mm, which ensures the corrosion resistance and mechanical strength of the stainless steel leak-proof sleeve 3, and provides reliable external protection for the sealing structure.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof structure for municipal pipelines, comprising a first pipeline (1), a second pipeline (2), an inspection mechanism (6), an anti-blocking mechanism (9), and a flow control mechanism (10), characterized in that: Both the first pipe (1) and the second pipe (2) have socket holes (14) on their surfaces. There are four socket holes (14). Each of the four socket holes (14) is fitted with a limiting post (13). Both sets of limiting posts (13) are fixedly connected to a stainless steel leak-proof sleeve (3). Both sets of stainless steel leak-proof sleeves (3) are provided with a fixing plate (4). There are four fixing plates (4). Both sets of fixing plates (4) are threaded with screws (5). There are four screws (5). The stainless steel leak-proof sleeves (3) are provided with EPDM rubber (15) and a water-swellable water-stop strip (16).

2. The municipal pipeline leak-proof structure according to claim 1, characterized in that: The inspection mechanism (6) includes a test hole (604) opened on the surface of the stainless steel leak-proof sleeve (3), a pressure gauge (601) is fixedly installed inside the test hole (604), a water injection interface (602) is fixedly connected to the surface of the stainless steel leak-proof sleeve (3), and a sealing plug (603) is inserted into the water injection interface (602).

3. The municipal pipeline leak-proof structure according to claim 1, characterized in that: A fixing box (7) is fixedly connected to the surface of the stainless steel leak-proof sleeve (3), and a wireless monitoring terminal (8) is fixedly installed inside the fixing box (7).

4. The municipal pipeline leak-proof structure according to claim 1, characterized in that: The anti-blocking mechanism (9) includes a first support block (901) fixedly connected to the surface of the first pipe (1). There are two first support blocks (901). A first drive motor (904) is fixedly installed on the side of one of the first support blocks (901) through a mounting plate. A first bearing (902) is fixedly connected to the side of both first support blocks (901). A first rotating shaft (903) is rotatably connected inside the two first bearings (902). One end of the first rotating shaft (903) is fixedly connected to the output shaft of the first drive motor (904). A cutting wheel (905) is fixedly connected to the surface of the first rotating shaft (903). There are four cutting wheels (905).

5. A municipal pipeline leak-proof structure according to claim 1, characterized in that: The flow control mechanism (10) includes a second support block (1001) fixedly connected to the surface of the second pipe (2). There are two second support blocks (1001). A second drive motor (1004) is fixedly installed on the top of one of the second support blocks (1001) through a mounting plate. A second bearing (1002) is fixedly connected inside both of the two second support blocks (1001). A second shaft (1003) is rotatably connected inside the two second bearings (1002). A control plate (1005) is fixedly connected to the surface of the second shaft (1003).

6. The municipal pipeline leak-proof structure according to claim 1, characterized in that: The surfaces of the first pipe (1) and the second pipe (2) are fixedly connected with bases (11), and the bottom of the two bases (11) is provided with rubber blocks (12), and there are eight rubber blocks (12).

7. A municipal pipeline leak-proof structure according to claim 1, characterized in that: The first pipe (1) and the second pipe (2) are made of fiberglass reinforced plastic (FRP) pipe.

8. A municipal pipeline leak-proof structure according to claim 1, characterized in that: The stainless steel leak-proof sleeve (3) is made of 304 stainless steel with a wall thickness of 3mm. The EPDM rubber (15) is made of EPDM rubber with a hardness of 70±5 Shore A. The expansion ratio of the water-swellable sealing strip (16) is ≥250%.

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