Pipe explosion prevention and control and safety monitoring method for small-caliber water supply pipeline

Abstract

The invention relates to water supply pipeline explosion safety monitoring and prevention and control. The invention discloses a small-caliber water supply pipeline explosion prevention and control and safety monitoring method. A prevention and control and pipe explosion signal monitoring device, a data analysis and processing module and a control module are included. The prevention and control and pipe explosion signal monitoring device comprises a resistance strain sensor and a strain gauge type torsion sensor, and the resistance strain sensor is arranged between the outer surface of the water supply pipe and the inner side of the pipe body fixing device; the strain torsion sensors are fixed on the connecting rod through nuts, and output signals of the two sensors are connected to the data analysis and processing module; a data processing algorithm is built in the data analysis and processing module, and the data analysis and processing module is connected with the control module; and the control module gives an alarm in time when receiving the abnormal signal. According to the invention, integration of reinforcement and safety monitoring of the small-caliber water supply pipeline is realized, the state of the pipeline can be accurately monitored in real time, and large-area disturbance on a pipe network due to pipe explosion repair is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of safety monitoring for water supply pipelines in water supply and drainage engineering, and particularly to a method for preventing and controlling burst pipes and safety monitoring of small-diameter water supply pipelines. Background Art

[0004] During the operation of pipelines, the surrounding environment is complex, and problems such as material failure, pipe body corrosion, external force damage, and aging exist, leading to pipeline leakage. Through research at home and abroad, it is found that foreign research focuses on improving the strength and durability of water supply pipelines, optimizing structural design, developing advanced detection technologies, and exploring new maintenance and repair methods.

[0005] Domestic research on water supply pipelines mainly focuses on aspects such as pipeline materials, construction, and maintenance, while relatively less research has been conducted on the problem of easy bursting at bends. The invention patent with the application number CN202110592651.4 discloses a fire hydrant valve plug, a fire protection system, and its monitoring method, including a valve plate and a water pressure detection sensor. A cavity for accommodating the water pressure detection sensor is provided inside the valve plate. The water pressure detection sensor includes a strain gauge and a signal processing module. A wireless communicator and a battery are also arranged inside the valve plate. The center of one end of the valve plate is the sensitive area for water pressure detection, and the strain gauge is pasted on the inner wall of the sensitive area. The Wheatstone bridge formed by the signal processing module and the strain gauge is connected. When the water pressure changes, it will cause corresponding deformation in the sensitive area, and the resistance of the strain gauge also changes accordingly, causing the bridge to lose balance and output an electrical signal proportional to the water pressure, thereby realizing water pressure detection.

[0006] This type of technology can conveniently complete the real-time detection of the water pressure inside the fire hydrant. For the monitoring of the water supply status of fire hydrants and small-diameter water supply pipelines in urban water supply, firstly, it is necessary to ensure the normal working state of the water pressure detection device, and secondly, the abnormality of the water pressure detection device may indicate the abnormality of the pipeline pressure and even the occurrence of a burst pipe accident. And the pipeline elbow is the sensitive area of the water supply pipeline. Therefore, it is particularly feasible to focus on key monitoring at the elbow of the water supply pipeline. Summary of the Invention

[0007] In view of the deficiencies of the existing technology, the present invention proposes a method for preventing and controlling burst pipes and safety monitoring of small-diameter water supply pipelines.

[0008] The technical solution adopted by the present invention is as follows: A method for preventing and controlling burst pipes and safety monitoring of small-diameter water supply pipelines, which includes: A device for monitoring anti - explosion and pipe burst signals. The device for monitoring anti - explosion and pipe burst signals is fixed at the elbow of the water supply pipe through a device housing composed of two L - shaped galvanized steel plates. The device for monitoring anti - explosion and pipe burst signals includes a resistance strain gauge sensor. The resistance strain gauge sensor is arranged between the device housing composed of L - shaped galvanized steel plates and the water supply pipe in a matching manner. The output signal of the resistance strain gauge sensor is connected to the data analysis and processing module. A data analysis and processing module. The data analysis and processing module receives the output signal of the resistance strain gauge sensor, and judges whether there is a risk of pipe burst according to the variation rules of pressure, flow rate, and resistance data. If an abnormal signal within a specific leakage range appears, it can be judged that there is a potential risk of pipe burst in the pipeline. A control module. The control module is connected to the data analysis and processing module. When the data analysis and processing module judges that there is a risk of pipe burst in the pipeline, it issues an alarm signal in time to prevent the further expansion of the pipe burst accident.

[0009] The method for preventing pipe burst and safety monitoring of small - diameter water supply pipes. The device for monitoring anti - explosion and pipe burst signals includes a strain - gauge type torque sensor. The strain - gauge type torque sensor is installed on the fastening bolt of the device housing composed of two L - shaped galvanized steel plates. The output signal of the strain - gauge type torque sensor is connected to the data analysis and processing module. When the elastic shaft of the strain - gauge type torque sensor generates a slight deformation due to torque, it will cause a change in resistance, and a voltage signal proportional to the torque is generated through a measuring bridge. The voltage signal is amplified by a signal amplifier and then connected to the data analysis and processing module. The data analysis and processing module judges whether the torque is abnormal according to the monitored output voltage signal of the strain - gauge type torque sensor, so as to monitor the aging and loosening conditions of the screws of the device for monitoring anti - explosion and pipe burst signals and ensure the normal working state of the device for monitoring anti - explosion and pipe burst signals.

[0010] The method for preventing pipe burst and safety monitoring of small - diameter water supply pipes. The resistance strain gauge sensor installed on the water supply pipe captures abnormal signals inside the pipe through resistance changes during the operation of the pipe network. These signals may be caused by pipeline leakage or an impending pipe burst. The data analysis and processing module analyzes the pressure and leakage frequency signals to judge whether there is leakage or pressure abnormality, and is used to monitor the health status of the pipeline.

[0011] The method for preventing pipe burst and safety monitoring of small - diameter water supply pipes. The resistance strain gauge sensor is attached to the inside of the reinforcement device and in contact with the pipe. The leakage frequency signal of the pipe is located through parameters such as the size of the leak, the flow state of the pipe, the pipe diameter, and the internal pressure, and the abnormal range of the internal condition of the pipe is determined.

[0012] The described method for preventing and controlling pipe bursts and safety monitoring of small-diameter water supply pipes. The device for preventing and controlling pipe bursts and monitoring burst signals is composed of two L-shaped galvanized steel plates to form the device housing. Reinforcing diagonal beams are respectively provided at both ends connecting the two L-shaped galvanized steel plates, which are adapted to the shapes at pipe elbows or tees. The two L-shaped steel plates are buckled together with bolts, and the two pieces fit together to wrap the pipe, so as to disperse the pressure at the pipe elbows and tees and distribute the pipe pressure to the device.

[0013] The described method for preventing and controlling pipe bursts and safety monitoring of small-diameter water supply pipes. A closed-cell polyethylene foam board is installed between the inside of the device housing and the outside of the water supply pipe, which plays a role in pipe heat preservation and prevents the pipe from freezing and cracking at low temperatures.

[0014] Advantages of the invention: 1. For the method for preventing and controlling pipe bursts and safety monitoring of small-diameter water supply pipes of the present invention, through the sensors installed on the small-diameter water supply pipes, abnormal signals inside the pipe can be captured through the change of resistance during the operation of the pipe network. These signals may be caused by pipe leakage or an impending pipe burst, and are used to monitor the health status of the pipe. The data analysis and processing module analyzes and processes the collected data, and judges whether there is a risk of pipe burst according to the change rules of pressure and resistance data. If abnormal signals within a specific leakage range appear, it can be judged that there is a hidden danger of pipe burst, which is convenient for timely treatment. When the data analysis and processing module judges that there is a risk of pipe burst in the pipe, the control module can give an alarm in time to prevent the further expansion of the pipe burst accident.

[0015] 2. For the method for preventing and controlling pipe bursts and safety monitoring of small-diameter water supply pipes of the present invention, the device for preventing and controlling pipe bursts and detecting safety signals is composed of a reinforced housing and sensors. The device housing is installed at the pipe elbows and tees by using a triangular reinforced steel frame to disperse the pressure inside the pipe and suppress the water hammer effect. The L-shaped steel frame is fastened to the pipe with screws. The strain gauge type torque sensor is installed on the screws fixing the explosion-proof device, and a measuring bridge is formed on the elastic shaft. When the elastic shaft is subjected to torque and produces a small deformation, the strain gauge will produce a change in resistance, and the bridge will generate a voltage signal proportional to the torque, which can monitor the aging and loosening conditions of the screws.

[0016] 3. For the method for preventing and controlling pipe bursts and safety monitoring of small-diameter water supply pipes of the present invention, an integrated system for preventing and controlling pipe bursts and safety monitoring of small-diameter water supply pipes is provided, which realizes the integration of reinforcement and safety monitoring of small-diameter water supply pipes. Compared with the prior art, it avoids large-area disturbances to the pipe network for repairing pipe bursts; the device is simple to manufacture, has a low cost, is easy to install, and the monitoring method can accurately monitor the pipe state in real time, which is convenient for pipe network maintenance and prevention of pipe bursts, and saves costs. Description of the drawings

[0017] Figure 1 It is the implementation and processing flow of the method for preventing and controlling pipe bursts and safety monitoring of small-diameter water supply pipes of the present invention; Figure 2 The figure shows the external structure schematic diagram of the prevention and control and burst pipe signal monitoring device; Figure 3 The figure shows the pipeline pressure anomaly detection process of the water supply pipeline burst prevention and control and safety monitoring method; Figure 4 The figure shows the working state monitoring process of the prevention and control and burst pipe signal monitoring device / fastening bolt; Figure 5 The figure shows the usage state schematic diagram of the prevention and control and burst pipe signal monitoring device; Figure 2 、 Figure 5 In FIGS. and, 1 - housing of the prevention and control and burst pipe signal detection device; 2 - fastening bolt; 3 - reinforcing diagonal beam; 4 - strain gauge type torque sensor; 5 - resistance strain gauge sensor; 6 - water supply pipeline. Specific implementation mode

[0018] To make the technical concept and advantages for realizing the invention purpose of the present invention clearer and more understandable, the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the following embodiments are only used to explain and illustrate the preferred implementation modes of the present invention, and should not be regarded as and do not constitute a limitation to the scope of patent protection required by the present invention. Embodiment 1

[0019] Refer to Figure 1 , the present invention proposes a small - diameter water supply pipeline burst prevention and control and safety monitoring method, which includes: a, a prevention and control and burst pipe signal monitoring device, and the structure of the prevention and control and burst pipe signal monitoring device is as Figure 2 shown.

[0020] The resistance strain sensor 5 of the prevention and control and burst pipe signal monitoring device is arranged between the pipe body and the burst pipe prevention and control device 1. The burst pipe prevention and control device 1 is fixed by a fastening nut, and the strain type torque sensor 4 is connected to the screw through a fastening nut. Signal lines are respectively led out from the strain torque sensor 4 and the resistance strain gauge sensor 5 and connected to the data analysis and processing module. Whether the burst pipe prevention and control device 1 is loose can be detected through the corresponding torque sensor, and the in - pipe pressure data of the water supply pipeline 6 can be monitored through the corresponding resistance strain gauge type sensor 5. Figure 5 The figure shows the installation state of the prevention and control and burst pipe signal monitoring device in use. The prevention and control and burst pipe signal monitoring device is fixed at the elbow of the water supply pipeline through a device housing composed of two L - shaped galvanized steel plates. The prevention and control and burst pipe signal monitoring device includes a resistance strain gauge sensor, and the resistance strain gauge sensor is arranged between the device housing composed of L - shaped galvanized steel plates and the water supply pipeline in a matching manner. The output signal of the resistance strain gauge sensor is connected to the data analysis and processing module.

[0021] b. The data analysis and processing module. The data analysis and processing module receives the output signal of the resistance strain gauge sensor, judges whether there is a risk of pipe explosion according to the variation rules of pressure, flow rate, and resistance data, and can judge that there is a potential risk of pipe explosion if abnormal signals within a specific leakage range appear; as Figure 3 shown.

[0022] c. The control module. The control module is connected to the data analysis and processing module; when the data analysis and processing module judges that there is a risk of pipe explosion, it issues an alarm signal in time to prevent the further expansion of the pipe explosion accident.

[0023] The resistance strain gauge sensor installed on the water supply pipeline captures abnormal signals inside the pipe through resistance changes during the operation of the pipe network. These signals may be caused by pipeline leakage or an impending pipe explosion. The data analysis and processing module analyzes the pressure and leakage frequency signals to judge whether there is leakage or abnormal pressure, and is used to monitor the health status of the pipeline. The resistance strain gauge sensor is attached inside the reinforcement device and in contact with the pipeline, and locates the pipeline leakage frequency signal through parameters such as the size of the leak, the flow state of the pipeline, the pipeline diameter, and the internal pressure to determine the abnormal range of the internal condition of the pipeline.

[0024] As Figure 3 , the resistance strain sensor 5 is connected to the data analysis and processing module. The data acquisition module receives the pressure data and transmits it wirelessly to the data processing center. The pressure and leakage frequency signals are analyzed through the built-in algorithm, and it is judged whether there is leakage and abnormal pressure in the current pipeline. If abnormal data is monitored, the control module connected to the data analysis and processing module will trigger an alarm and locate the leakage position. If no abnormal data is monitored, the data will continue to be collected. Embodiment 2

[0025] The prevention and control and pipe explosion signal monitoring device of this embodiment includes a strain gauge type torque sensor. The difference from Embodiment 1 is that: further, the prevention and control and pipe explosion signal monitoring device includes a strain gauge type torque sensor. The strain gauge type torque sensor is installed on the fastening bolt of the device shell composed of two L-shaped galvanized steel plates. The output signal of the strain gauge type torque sensor is connected to the data analysis and processing module; when the elastic shaft of the strain gauge type torque sensor generates a small deformation under torque, it will generate a resistance change, and a voltage signal proportional to the torque is generated through measuring the electric bridge. The voltage signal is amplified by the signal amplifier and then connected to the data analysis and processing module. The data analysis and processing module judges whether the torque is abnormal according to the monitored output voltage signal of the strain gauge type torque sensor to monitor the aging and loosening conditions of the screws of the prevention and control and pipe explosion signal monitoring device and ensure the normal working state of the prevention and control and pipe explosion signal monitoring device. The foregoing description refers to Figure 1 、 Figure 4 .

[0026] See Figure 4 , the strain gauge type torque sensor 4 measures the bridge circuit through the slight deformation of the elastic shaft, transmits it to the data acquisition module through a signal amplifier, and then wirelessly transmits it to the data processing center. The corresponding algorithm language is used to judge whether the torque is abnormal, and the control module is connected to the alarm system. Embodiment 3

[0027] See Figure 2 , different from Embodiment 1 and Embodiment 2, the method for preventing and controlling pipe burst and safety monitoring of small-diameter water supply pipes in this embodiment is that the device for preventing and controlling pipe burst and monitoring burst signals is composed of two L-shaped galvanized steel plates to form a device housing. Reinforcing diagonal beams are respectively provided at both ends connecting the two L-shaped galvanized steel plates, which are adapted to the shapes at pipe elbows or tees. The two L-shaped steel plates are buckled together with bolts, and the two pieces are fitted together to wrap the pipe, so as to disperse the pressure at the pipe elbows and tees and distribute the pipe pressure to the device.

[0028] For the device for preventing and controlling pipe burst and monitoring burst signals, a closed-cell polyethylene foam board can be installed in the middle between the device housing and the outside of the water supply pipe to play a role in pipe insulation and prevent the pipe from freezing and cracking at low temperatures.

[0029] The resistance strain gauge sensor 5 is installed on the pipe body, monitors the resistance signal and transmits it to the control module to monitor the change of the pressure value inside the pipe (the state inside the pipe). When the pressure value is abnormal, a signal can be sent out for alarm in time to realize the safety monitoring of the pipe. The strain gauge type torque sensor 4 is installed on the fastening screw 2, measures the bridge circuit through the strain gauge, monitors the signal, judges whether the torque is abnormal, and detects the tightness of the screw, so as to facilitate the timely discovery of equipment failures and timely maintenance and replacement.

[0030] Compared with the prior art, the present invention monitors whether the device is loose and the real-time state inside the pipe through signal acquisition and data analysis, avoiding the problems of difficult positioning of leakage points and inconvenient large-area excavation when leakage occurs. It also makes the subsequent maintenance work of the pipe network more efficient, timely responds to pipe burst problems and minimizes the losses caused by leakage. The method is simple and easy to operate, and is efficient and easy to implement.

Claims

1. A method for preventing and controlling pipe bursts and safety monitoring of small-diameter water supply pipelines, characterized in that Including: A prevention and control and pipe burst signal monitoring device, which is fixed at the elbow of the water supply pipe through a device housing composed of two L-shaped galvanized steel plates. The prevention and control and pipe burst signal monitoring device includes a resistance strain gauge sensor, and the resistance strain gauge sensor is arranged between the device housing composed of L-shaped galvanized steel plates and the water supply pipe in a matching manner. The output signal of the resistance strain gauge sensor is connected to the data analysis and processing module; A data analysis and processing module, which receives the output signal of the resistance strain gauge sensor and judges whether there is a pipe burst risk according to the change rules of pressure, flow and resistance data. If an abnormal signal within a specific leakage range appears, it can be judged that there is a pipe burst hidden danger in the pipe; A control module, which is connected to the data analysis and processing module; when the data analysis and processing module judges that there is a pipe burst risk in the pipe, an alarm signal is sent in time to prevent the pipe burst accident from expanding further.

2. The small-diameter water supply pipeline burst prevention and control and safety monitoring method according to claim 1, wherein: The prevention and control and pipe burst signal monitoring device includes a strain gauge type torque sensor, and the strain gauge type torque sensor is installed on the fastening bolts of the device housing composed of two L-shaped galvanized steel plates. The output signal of the strain gauge type torque sensor is connected to the data analysis and processing module; When the elastic shaft of the strain gauge type torque sensor generates a small deformation under torque, a resistance change will occur, and a voltage signal proportional to the torque is generated through measuring the electric bridge. The voltage signal is amplified by a signal amplifier and then connected to the data analysis and processing module. The data analysis and processing module judges whether the torque is abnormal according to the monitored output voltage signal of the strain gauge type torque sensor to monitor the aging and loosening conditions of the screws of the prevention and control and pipe burst signal monitoring device and ensure the normal working state of the prevention and control and pipe burst signal monitoring device.

3. The small-diameter water supply pipeline burst prevention and control and safety monitoring method according to claim 1 or 2, characterized in that: The resistance strain gauge sensor installed on the water supply pipe captures abnormal signals in the pipe through resistance changes during the operation of the pipe network. These signals may be caused by pipe leakage or an impending pipe burst. The data analysis and processing module judges whether there is leakage or pressure abnormality by analyzing the pressure and leakage frequency signals to monitor the health status of the pipe.

4. The small-diameter water supply pipeline burst prevention and control and safety monitoring method according to claim 3, characterized in that: The resistance strain gauge sensor is attached to the inside of the reinforcement device and in contact with the pipe, and locates the pipe leakage frequency signal through parameters such as the size of the leak, the pipe flow state, the pipe diameter and the internal pressure to determine the abnormal range of the pipe condition.

5. The method for preventing and controlling burst pipes and safety monitoring of small-diameter water supply pipes according to claim 1, 2 or 4, characterized in that: The prevention and control and pipe burst signal monitoring device is composed of a device housing through two L-shaped galvanized steel plates. Reinforcement diagonal beams are respectively arranged at both ends connecting the two L-shaped galvanized steel plates, which is adapted to the shape of the pipe elbow or tee. The two L-shaped steel plates are buckled together with bolts, and the two are attached to wrap the pipe to disperse the pressure at the pipe elbow and tee and distribute the pipe pressure to the device.

6. The method for preventing and controlling burst pipes and safety monitoring of small-diameter water supply pipes according to claim 1, 2 or 4, characterized in that: A closed-cell polyethylene foam board is installed between the inside of the device housing and the outside of the water supply pipe to play a role in pipe heat preservation and prevent the pipe from cracking due to low temperature.

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