A long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipe monitoring system and method

Abstract

The invention discloses a long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipe monitoring system and method, comprising a real-time monitoring platform and a monitoring device; the real-time monitoring platform comprises a signal collector, a control center signal analyzer and a display console, the signal collector is connected to the control center signal analyzer, and the control center signal analyzer is connected to the display console; the monitoring device comprises at least one group of air supply and exhaust valves, the air supply and exhaust valves are arranged at high point positions in the water transmission and regulation system pipeline, and high-frequency pressure sensors and sonar hydrophones are also arranged at the high point positions; the high-frequency pressure sensors and sonar hydrophones are respectively connected to the signal collectors; the high-frequency pressure sensors and sonar hydrophones are respectively used to collect pressure data near the air supply and exhaust valves and noise data of intake and exhaust, and upload them to the real-time monitoring platform for analysis, and the leakage position is judged by the real-time monitoring platform, so as to effectively solve the technical problem of accurate positioning of pipeline leakage and pipe explosion, and prevent pipeline leakage and pipe explosion.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline water transportation, and in particular to a long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipe monitoring system and method. Background Art

[0002] The long-distance and large-diameter pipeline transportation business is booming in China. It is welcomed by more and more resource owners due to its advantages of energy saving, environmental protection, low loss, balance and stability. Pipeline transportation is cheaper than road transportation and can meet the requirements of continuous production in modern factories. The operating life of the pipeline is 30 years, so the economic benefits are considerable. The cost of pipeline transportation is significantly lower than that of road transportation. In addition to the operating cost of the pipeline transportation system itself, no other costs are incurred. The pipeline transportation system implements automatic control of the pipeline transportation system through the monitoring system. The use of pipeline transportation is an important measure to improve the economic benefits of enterprises and reduce costs.

[0003] In the process of long-distance, large-diameter, high-lift water transportation, the pipeline rises and falls with the terrain slope, and the pipeline is constantly damaged due to repeated pressure transients and corrosion. Pressure transients can cause invisible cracks in buried pipes, pipe fittings and pipe accessories, and even cause serious pipeline ruptures, which are mainly manifested in the start-up and shutdown of pumps, rapid valve switching, flushing operations, mud valve operations, etc. When the pipeline is subjected to continuous loading and unloading stress, exceeding a certain threshold, micro cracks will begin to form and gradually spread until the pipeline finally ruptures, easily causing pipe wall leakage and even pipe bursting. At the same time, due to the very fast propagation speed of water hammer, it is usually above 1000 meters / second depending on different parameters such as pipe materials. Pipe cracks and pipeline bursting accidents caused by water hammer occur from time to time.

[0004] Existing monitoring technologies include drone monitoring, temperature-sensing optical fibers, thermal imaging detectors, etc. These methods are costly and cannot predict pipeline leakage and pipe bursts. To address the above problems, the present invention sets sonar hydrophones and high-frequency pressure sensors at the high and second-highest points in the water supply and regulation system pipelines, which can effectively solve the leakage and explosion-proof pipe problems of long-distance water supply pipelines in complex terrains, effectively protect the pipelines, and improve the work efficiency and economic benefits of pipeline transportation. Summary of the invention

[0005] The purpose of the present invention is to provide a long-distance large-diameter water transmission and regulation anti-leakage and explosion-proof pipe monitoring system and method in view of the deficiencies in the prior art. An anti-leakage and explosion-proof pipe online monitoring system is set in a pressurized water transmission pipeline, which can effectively solve the soft blockage and blockage problems of long-distance water transmission pipelines in complex terrain. The system adopts an acoustic technology analysis method to judge small leakage events, effectively protects the pipeline, and improves the work efficiency and economic benefits of pipeline transportation.

[0006] The technical solution of the present invention is as follows:

[0007] The invention discloses a long-distance large-diameter water transmission and regulation anti-leakage and explosion-proof pipe monitoring system, comprising a real-time monitoring platform and a monitoring device; the real-time monitoring platform comprises a signal collector, a control center signal analyzer and a display console, the signal collector is connected to the control center signal analyzer, and the control center signal analyzer is connected to the display console; the monitoring device comprises at least one group of air-supply and air-supply valves, the air-supply and air-supply valves are arranged at high point positions in the water transmission and regulation system pipeline, and a high-frequency pressure sensor and a sonar hydrophone are also arranged at the high point positions; the high-frequency pressure sensor and the sonar hydrophone are respectively connected to the signal collector.

[0008] The above structure is connected to the monitoring device through the real-time monitoring platform, and the monitoring data is uploaded in time. After the real-time monitoring platform judges and reminds the missed points, it effectively solves the technical problem of accurate positioning of pipeline leakage and pipe burst, and realizes the prevention of pipeline leakage and pipe burst, which has avoided the expansion of accidents and caused economic losses.

[0009] Furthermore, it specifically includes a water pump room 1, a first air supply valve 2, a second air supply valve 5, a first high-frequency pressure sensor 3, a first sonar hydrophone 4, a second high-frequency pressure sensor 6, a second sonar hydrophone 7 and a water inlet pool 8; the first air supply valve 2 is arranged at the highest point of the pipeline, the second air supply valve 5 is arranged at the second highest point of the pipeline, the first high-frequency pressure sensor 3 and the first sonar hydrophone 4 are arranged at the position of the first air supply valve 2, and the second high-frequency pressure sensor 6 and the second sonar hydrophone 7 are arranged at the position of the second air supply valve 5; a set of signal collectors are arranged between the first high-frequency pressure sensor 3, the first sonar hydrophone 4, the second high-frequency pressure sensor 6 and the second sonar hydrophone 7 through branch optical cables, and the signal collector is connected to the signal analyzer of the control center through the main optical cable.

[0010] Furthermore, multiple groups of high-frequency pressure sensors and sonar hydrophones are installed in long-distance water pipelines in complex terrain, and are installed at high points with complex and undulating terrain.

[0011] The above structure sets a high-frequency pressure sensor and a sonar hydrophone near each air supply and exhaust valve. Because the operation of the exhaust valve will produce transient pressure changes and noise of intake and exhaust, the system preliminarily analyzes the collected data to determine whether the exhaust valve is working normally or not in time. For example, due to the accumulation of a large amount of air due to the failure of the exhaust valve, the sound data collected by the hydrophone will be significantly enhanced, which is obviously different from the normal background sound in the water.

[0012] Furthermore, a monitoring system is arranged on the water lifting pipeline and the water delivery pipeline.

[0013] The present invention also discloses a method for monitoring long-distance large-diameter water transmission and regulation anti-leakage and explosion-proof pipes, comprising the following steps: S1, using a high-frequency pressure sensor and a sonar hydrophone to respectively collect pressure data near the air supply and exhaust valves and noise data of the air intake and exhaust; S2, transmitting the data collected by S1 to a signal collector, the signal collector integrates the collected signals and transmits them to a signal analyzer in a control center, and the signal analyzer in the control center processes and analyzes the data; S3, the signal analyzer in the control center transmits the analyzed data to a display station, and the current operating status of the pipeline network is remotely viewed through the display station. The back end of the display station compares the data transmitted according to different time periods, and automatically analyzes and determines whether there is a leak and the leak point.

[0014] Furthermore, in S1, high-frequency pressure sensors are used to collect pressure parameters in the pipeline, capture instantaneous pressure drops, and monitor and locate pipeline leaks. Sonar hydrophones are used to collect sound data in the pipeline, and spectrum analysis technology is used to monitor and judge small leakage events.

[0015] Furthermore, the method of using high-frequency pressure sensors to capture instantaneous pressure drops and monitor and locate pipeline leaks is as follows: monitor pipe burst leakage events above 4 liters / second. When a pipe burst event occurs, use high-frequency pressure sensors installed upstream and downstream of the pipeline to monitor pipeline pressure parameters, capture instantaneous pressure drops, and determine whether pipeline leakage has occurred; calculate the location of the leak point based on the speed at which the negative pressure wave is transmitted upstream and downstream and the time difference when it reaches the pressure transmitters at both ends.

[0016] The above method realizes pipeline leakage monitoring and positioning by the negative pressure wave method through an online monitoring system platform, and monitors pipe burst leakage events above 4 liters / second. When a pipe leaks and bursts, due to the imbalance of pressure inside and outside the pipeline, the pressure at the leakage point suddenly drops to generate a negative pressure wave. The negative pressure wave propagates upward and downstream and gradually decays. By using pressure sensors installed upstream and downstream of the pipeline to monitor pipeline pressure parameters and capture instantaneous pressure drops, it can be determined whether a pipeline leak has occurred.

[0017] Furthermore, the method of collecting sound data and performing spectrum analysis through sonar hydrophones is as follows: the sonar hydrophone collects sound data in the pipeline and transmits the data to the signal collector, the signal collector integrates the collected signals and transmits them to the signal analyzer in the control center, and identifies abnormal noise energy changes and water leakage sounds in the pipeline network through signal analysis, judges small leakage events, and realizes tiny leakage monitoring of more than 5 liters / minute; the sonar hydrophone is used to compare and analyze the sound trend chart of the entire pipeline after long-term operation to judge the leakage point of the pipe wall.

[0018] The above method uses acoustic technology analysis to determine small leakage events, and can usually achieve small leakage monitoring of more than 5 liters / minute. There are three situations in which leakage sounds are generated: leakage friction sound, impact sound, and medium collision sound. The leakage friction sound is generated by the viscosity and flow rate of the medium. When the leakage occurs, the medium rubs against the pipe wall to generate sound. The friction sound propagates along both sides of the pipe in the form of waves. The leakage sound tends to be higher frequency, usually between 300-3000Hz. The sonar hydrophone used can collect 20-20kHz audio data, and identify abnormal noise energy changes and leakage sounds in the pipe network through signal analysis and big data algorithms.

[0019] Furthermore, in S3, while the display station remotely checks the current operating status of the pipeline network, the internal system monitors and records the different pressure distributions and noise change patterns borne by different areas of the platform pipeline network, and prompts the staff to check abnormal problems and deal with them in time through the display station.

[0020] Furthermore, changes in the pump station operation mode, water transfer mode and exhaust valve working mode are also incorporated into the internal system monitoring and recording process.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention utilizes high-frequency pressure sensors and sonar hydrophones to respectively collect pressure data near the supply and exhaust valves and noise data of the intake and exhaust valves, and uploads them to a real-time monitoring platform. The leakage location is determined through the real-time monitoring platform, which effectively solves the technical problem of accurate positioning of pipeline leakage and pipe burst, and realizes the prevention of pipeline leakage and pipe burst, thus avoiding the expansion of accidents and causing economic losses.

[0023] 2. The present invention can effectively solve the leakage and explosion-proof pipe problems of long-distance water pipelines in complex terrain by installing multiple groups of high-frequency pressure sensors and sonar hydrophones in long-distance water pipelines in complex terrain, effectively protect the pipelines, and improve the work efficiency and economic benefits of pipeline transportation.

[0024] 3. The present invention combines the monitoring system with high-frequency pressure and hydrophone data to automatically determine whether there is a leak in the pipeline and the leak point. The display console promptly prompts the staff to check the abnormality and take measures, effectively ensuring the safety of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the real-time monitoring platform of the present invention;

[0026] Figure 2 It is a schematic diagram of the water lifting pipeline structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the water delivery pipeline structure of the present invention.

[0028] Figure numerals: 1. including water pump room; 2. first air supply and exhaust valve; 3. first high-frequency pressure sensor; 4. first sonar hydrophone; 5. second air supply and exhaust valve; 6. second high-frequency pressure sensor; 7. second sonar hydrophone; 8. water inlet pool. DETAILED DESCRIPTION

[0029] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] The technical solution of the present invention is further described in detail below in conjunction with embodiments.

[0031] like Figure 1 As shown, the present invention discloses a long-distance large-diameter water transmission and regulation anti-leakage and explosion-proof pipe monitoring system, including a real-time monitoring platform and a monitoring device; the real-time monitoring platform includes a signal collector, a control center and a display station, and the signal collector, the control center signal analyzer and the display station are connected by optical cables; the monitoring device includes at least one group of air-supply valves, and the air-supply valve installation position is provided with a high-frequency pressure sensor and a sonar hydrophone, and the air-supply valve is arranged at a high point in the water transmission and regulation system pipeline; the high-frequency pressure sensor and the sonar hydrophone are connected to the signal collector through a branch optical cable. While remotely viewing the current operating status of the pipeline network from the display station, such as pressure and noise signals, the different pressure distributions and noise change laws borne by different areas of the platform pipeline network are learned through machine learning. Once a change in mode occurs, the staff is prompted to check the abnormal problem and deal with it in time. Changes in the pump station operation mode, water regulation mode, exhaust valve working mode, etc. will also be included in the learning process.

[0032] like Figure 2 As shown, the present invention is applied to a water lifting pipeline, the position of the first air supply valve is the highest point of the pipeline, and the position of the second air supply valve is the second highest point; at the installation positions of the first air supply valve and the second air supply valve, a high-frequency pressure sensor and a sonar hydrophone are respectively arranged, and there may be multiple sets of combinations in actual use. A set of signal collectors is arranged near the two sets of sensors and connected through branch optical cables, and then the collectors are connected to the main optical cable to transmit the signals to the control center.

[0033] like Figure 3 As shown, the present invention is applied to water pipelines, i.e., gravity flow pipelines, which rely on the altitude and the principle of water gravity flow to transport water to various water demand points through pipelines. Due to the complex terrain and large ups and downs, it is necessary to climb over hillsides, cross gullies, rivers, roads, etc., forming a large number of U-shaped pipe sections. Figure 2 Similarly, the position of the first air supply and exhaust valve is the highest point of the pipeline, and the position of the second air supply and exhaust valve is the second highest point; at the installation positions of the first air supply and exhaust valve and the second air supply and exhaust valve, a high-frequency pressure sensor and a sonar hydrophone are respectively provided. In actual application, there may be multiple sets of combinations. A signal collector is set near the two sets of sensors and connected through a branch optical cable. The collector is then connected to the main optical cable to transmit the signal to the control center.

[0034] The present invention also discloses a method for monitoring long-distance, large-diameter water transmission and regulation anti-leakage and explosion-proof pipes, comprising: adjacent high-frequency pressure sensors and sonar hydrophones are connected through branch optical cables, and the signals are transmitted to a signal collector through the optical cable; the signal collector transmits the collected signals to a signal analyzer in a control center through a main optical cable, and the pressure data and sound data collected by the high-frequency pressure sensor and the sonar hydrophone are processed through system software; the signal analyzer in the control center transmits the analyzed data to a display station, and the current operating status of the pipeline network is remotely viewed through the display station. The back-end system of the display station is provided with a machine learning algorithm, which can automatically analyze and determine whether there is a leak and the leak point.

[0035] High-frequency acquisition pressure sensors are used to capture such transient signals. The negative pressure wave method is used to monitor and locate pipeline leaks through an online monitoring system platform. Leakage events of pipe bursts above 4 liters / second are monitored. When a pipe burst occurs, the pressure at the leak point suddenly drops due to the imbalance of pressure inside and outside the pipe, generating a negative pressure wave. The negative pressure wave propagates upstream and downstream and gradually decays. The pressure sensors installed upstream and downstream of the pipeline are used to monitor the pipeline pressure parameters and capture the instantaneous pressure drop to determine whether a pipeline leak has occurred. The location of the leak point can be calculated based on the speed at which the negative pressure wave is transmitted upstream and downstream and the time difference between the negative pressure wave and the pressure transmitter at both ends. When the pipeline produces corrosion holes due to material corrosion and aging, or cracks due to other external forces, the pressure difference between the inside and outside of the pipeline causes the fluid in the pipeline to leak outward and the pipeline to leak. The medium in the pipe sprays outward through the corrosion holes or cracks to form a sound source, and then interacts with the pipeline, and the source radiates energy outward to form a sound wave. Usually this is a small leak, and the process is generally slow, and no drastic pressure transients will occur. Therefore, in response to this phenomenon, the system uses acoustic technology analysis to determine small leakage events, and can usually achieve micro-leakage monitoring of more than 5 liters / minute. There are three situations in which leakage sounds are generated: leakage friction sound, impact sound, and medium collision sound. The leakage friction sound is generated by the viscosity and flow rate of the medium. When the leakage occurs, the medium rubs against the pipe wall to generate sound. The friction sound propagates along both sides of the pipe in the form of waves. The sound of leakage tends to be higher frequency, usually between 300-3000Hz. The sonar hydrophone used can collect 20-20kHz audio data, identify abnormal noise energy changes and water leakage sounds in the pipe network through signal analysis and big data algorithms, and use spectrum analysis technology to timely and effectively monitor a certain degree of micro-leakage or leakage events that gradually develop over time. Completely and accurately grasp the operating status of the water supply system, help users quickly determine water supply system problems, improve the reliability and safety of water network operation, and promptly discover operating abnormalities, which plays an important role in improving the efficiency and level of dispatching management. The safety monitoring system can combine high-frequency pressure and sonar hydrophone data. Because the exhaust valve will produce transient pressure and exhaust noise, the system will initially analyze the collected data to determine whether the exhaust valve is working properly or not in time. For example, if a large amount of air is accumulated due to the exhaust valve not working, the sound data collected by the sonar hydrophone will be significantly enhanced, which is obviously different from the normal background sound in the water.

[0036] The present invention discloses a method for monitoring leakage-proof and explosion-proof pipes for long-distance large-diameter water transmission and regulation. There are two monitoring methods. One is when a pipe network system fails, such as a pipe burst, equipment failure, etc. When the failure occurs, the pressure changes dramatically, and the sound at the leakage point also changes dramatically. Through the above changes, an online monitoring platform is used to automatically analyze and judge the burst pipe and the low point of the burst pipe, and the equipment is repaired in time. The second is that in the pipe network system after long-term operation, due to water quality reasons, the pipe wall leaks due to wear or corrosion on the pipe. Therefore, sonar hydrophones and high-frequency pressure sensors are set at the positions of the first replenishment and exhaust valves and the first replenishment and exhaust valves at two high points. After the pipeline has been in operation for a long time, in order to prevent leakage, the sound trend chart of the whole pipeline after long-term operation is compared and analyzed by the sonar hydrophone, so as to judge the pipe wall leakage point, and effectively ensure the safety of the pipe network system.

[0037] Through the above technical solutions, the technical problems of pipe wall leakage and pipe burst in the water lifting pipeline system and the water delivery pipeline system are effectively solved, ensuring the safety of the entire pipeline system and equipment, and promoting the safe, stable, economical and efficient operation of the pipeline system.

[0038] The specific implementation methods of this application are described in a relatively specific and detailed manner, but this should not be construed as limiting the scope of protection of this application. It should be noted that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the technical solution concept of this application, and these all fall within the scope of protection of this application.

Claims

1. A long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipe monitoring system, characterized in that: It includes a real-time monitoring platform and a monitoring device; the real-time monitoring platform includes a signal collector, a control center signal analyzer and a display station, the signal collector is connected to the control center signal analyzer, and the control center signal analyzer is connected to the display station; the monitoring device includes at least one set of air supply and exhaust valves, the air supply and exhaust valves are arranged at the high point position in the water supply and regulation system pipeline, and the high point position is also provided with a high-frequency pressure sensor and a sonar hydrophone; the high-frequency pressure sensor and the sonar hydrophone are respectively connected to the signal collector; The invention also includes a method for monitoring long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipes, which specifically comprises the following steps: S1, using a high-frequency pressure sensor and a sonar hydrophone to collect pressure data near the supply and exhaust valves and noise data of the intake and exhaust respectively; S2, transmitting the data collected by S1 to the signal collector, which integrates the collected signals and transmits them to the signal analyzer in the control center, which processes and analyzes the data; S3. The signal analyzer in the control center transmits the analyzed data to the display station, through which the current operation status of the pipeline network can be remotely viewed. The back end of the display station compares the data transmitted in different time periods, and automatically analyzes and determines whether there is a leak and the leak point; By analyzing the data collected by the high-frequency pressure sensor and the sonar hydrophone, it is determined whether the air-supply valve is working normally or not, or whether the air-supply valve is not working in time enough; Use high-frequency pressure sensors to collect pressure parameters in the pipeline, capture instantaneous pressure drops, and monitor and locate pipeline leaks; use sonar hydrophones to collect sound data in the pipeline, and use spectrum analysis technology to monitor and judge small leakage events; The method of using high-frequency pressure sensors to capture instantaneous pressure drops and monitor and locate pipeline leaks is as follows: monitor pipe burst leakage events above 4 liters / second. When a pipe burst occurs, use high-frequency pressure sensors installed upstream and downstream of the pipeline to monitor pipeline pressure parameters, capture instantaneous pressure drops, and determine whether a pipeline leak occurs; calculate the location of the leak point based on the speed at which the negative pressure wave is transmitted upstream and downstream and the time difference between reaching the pressure transmitters at both ends; The method of collecting sound data and performing spectrum analysis by sonar hydrophone is as follows: the sonar hydrophone collects sound data in the pipeline and transmits the data to the signal collector, which integrates the collected signals and transmits them to the signal analyzer in the control center. Through signal analysis, abnormal noise energy changes and water leakage sounds in the pipeline network are identified, small leakage events are judged, and small leakage monitoring of more than 5 liters / minute is achieved; The sonar hydrophone is used to compare and analyze the sound trend chart of the entire pipeline after long-term operation to determine the leakage point of the pipe wall.

2. According to claim 1, a long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipe monitoring system is characterized in that: Specifically, it comprises a water pump room (1), a first air supply valve (2), a second air supply valve (5), a first high-frequency pressure sensor (3), a first sonar hydrophone (4), a second high-frequency pressure sensor (6), a second sonar hydrophone (7) and a water inlet pool (8); the first air supply valve (2) is arranged at the highest point of the pipeline, the second air supply valve (5) is arranged at the second highest point of the pipeline, the first high-frequency pressure sensor (3) and the first sonar hydrophone (4) are arranged at the location of the first air supply valve (2), and the second high-frequency pressure sensor (6) and the second sonar hydrophone (7) are arranged at the location of the second air supply valve (5); a set of signal collectors are arranged between the first high-frequency pressure sensor (3), the first sonar hydrophone (4), the second high-frequency pressure sensor (6) and the second sonar hydrophone (7) via branch optical cables, and the signal collectors are connected to a signal analyzer in a control center via a main optical cable.

3. The long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipe monitoring system according to claim 2 is characterized in that: Multiple sets of high-frequency pressure sensors and sonar hydrophones are installed in long-distance water pipelines with complex terrain, and are set at high points with complex and undulating terrain.

4. A long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipe monitoring system according to claim 1 or 3, characterized in that: The monitoring system is installed on the water lifting pipeline and the water delivery pipeline.

5. The long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipe monitoring system according to claim 1 is characterized in that: In S3, while the display console remotely checks the current operating status of the pipeline network, the internal system monitors and records the different pressure distributions and noise change patterns in different areas of the platform pipeline network, and prompts staff through the display console to check for abnormal problems and deal with them in a timely manner.

6. The long-distance large-diameter water transmission and regulation anti-leakage and anti-explosion pipe monitoring system according to claim 1 is characterized in that: Changes in the pump station operating mode, water transfer mode and air supply and exhaust valve working mode are also included in the internal system monitoring and recording process.

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