Pipeline leakage monitoring and positioning device

Abstract

A pipeline leakage and positioning monitoring device is characterized in that a monitoring and positioning device is fixedly arranged outside a pipeline, a sonar measurement principle is utilized, high-frequency sizzles in the pipeline are acquired, a sound sensor receives and senses sound signals of flowing water, and a control circuit compares the frequency difference between normal liquid flowing water sound and leaked water sound; comprising water sound data under different pressures, the water sound data is preprocessed and analyzed, then subjected to A / D conversion and transmitted to an upper computer monitoring node through a wireless communication module, accurate positioning of leakage points can be achieved through multi-point layout installation and synchronous transmission of the leakage monitoring and positioning device, and therefore position information of the leakage points is given out. The system has the characteristics of high monitoring sensitivity and reliability, accurate leakage point positioning, high automation degree and simple installation and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline leakage monitoring, in particular to a pipeline leakage monitoring and positioning device. Background Art

[0002] Underground water supply pipelines are hidden and difficult to detect leaks. Traditionally, irregular manual inspections and non-destructive monitoring using portable equipment are time-consuming and labor-intensive, requiring significant engineering effort. While underground detectors placed around the pipelines can achieve automated monitoring, their low sensitivity makes them incapable of detecting leaks in a timely manner, much less accurately locating the leak point. This results in varying degrees of economic losses. Summary of the Invention

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a pipeline leakage monitoring and positioning device, which utilizes acoustic wave signals to monitor and locate underground water supply pipeline leakage.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A pipeline leakage and positioning monitoring device comprises a probe cabin (4), a battery compartment (12), a back cover (14), and a probe cabin cover (3), characterized in that the probe cabin cover (3) is connected to the probe cabin (4) by a thread, the probe cabin (4) is connected to the battery compartment (12) by a snap-fit ​​structure (16), and the battery compartment (12) is connected to the back cover (14) by a thread;

[0006] The acoustic sensor (1) is connected to the strong magnet (2) and placed in the front cavity of the probe cabin (4). The acoustic sensor (1) is connected to the control circuit (7) through the control circuit lead (6). The probe cabin cover (3) presses the strong magnet (2). The control circuit (7) is connected to the wireless transmission module (9) through the pin (8) and is fixed to the rear cavity of the probe cabin (4) through a threaded connection.

[0007] The control circuit (7) is connected to the battery pack (11) via a battery lead (10), the battery pack (11) is connected to the battery compartment (12), the antenna (15) is connected to the wireless transmission module (9) via an antenna lead (13) passing through the battery compartment (12), and the antenna (15) is fixedly connected to the back cover (14).

[0008] The acoustic sensor (1) is made of piezoelectric ceramic material and converts the acoustic signal collected in the underground pipeline into an electrical signal in real time.

[0009] The control circuit (7) includes a power supply circuit, a preprocessing circuit, an acquisition control circuit, and an SD card storage circuit. The power supply circuit is connected to the preprocessing circuit, which is connected to the acquisition control circuit, which is connected to the SD card storage circuit. The power supply circuit converts the 3.7V voltage from the battery pack into a 3.3V power supply voltage through voltage reduction and filtering during the entire monitoring process to ensure the normal operation of the entire control circuit. The preprocessing circuit amplifies the collected electrical signal through an operational amplifier, and then completes coupling, voltage division transmission, filtering, etc. The acquisition control circuit is provided with a microcontroller ADC to filter and acquire the signal, and at the same time control the wireless transmission module and the SD card storage circuit to store and wirelessly transmit the information. A storage chip is provided in the SD card storage circuit to store the information during the information processing process.

[0010] The wireless transmission module (9) adopts a 433MHz LORA wireless module to realize wireless transmission and reception of information.

[0011] The control circuit (7) is designed with low power consumption, and the battery pack 11 is powered by a 3.7V lithium battery, so that the device can work for a long time without interruption of power supply.

[0012] The pipeline leakage monitoring and positioning device is fixed on the outside of the pipeline to be measured through strong magnetic adsorption and clamp connection.

[0013] The pipeline leakage monitoring and positioning device, the wireless transmission module is a 433MHz LORA wireless module.

[0014] The pipeline leakage monitoring and positioning device is deployed through multiple nodes to achieve accurate positioning of the leakage point.

[0015] The beneficial effects of the utility model are:

[0016] This pipeline leakage monitoring and positioning device has a compact structure and adopts strong magnetic adsorption and clamp connection, which is easy to install and deploy. It improves the problem of complex connection and fixing process between general monitoring devices and pipeline surface and high maintenance cost.

[0017] The wireless transmission of the pipeline leakage monitoring and positioning device uses the LORA wireless transmission module with antenna, which can solve the problems of short-range wireless transmission and signal synchronization. It adopts multi-point deployment for continuous collection, data analysis and intelligent transmission to achieve sensitive judgment and accurate positioning of underground pipeline leakage points.

[0018] The controller circuit of the pipeline leakage monitoring and positioning device has low power consumption and is powered by a lithium battery, which solves the defect of short battery life and improves monitoring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is the principle block diagram of the control circuit of the utility model;

[0021] Figure 3 This is a schematic diagram of the installation and fixation of the utility model;

[0022] Figure 4 This is a schematic diagram of multi-point deployment and wireless transmission of the utility model.

[0023] Among them, 1 is the acoustic sensor, 2 is the strong magnet, 3 is the probe compartment cover, 4 is the probe compartment, 5 is the fixing hole, 6 is the control circuit lead, 7 is the control circuit, 8 is the pin, 9 is the wireless transmission module, 10 is the battery lead, 11 is the battery pack, 12 is the battery compartment, 13 is the antenna lead, 14 is the back cover, 15 is the antenna, 16 is the snap-on structure, 17 is the clamp, 18 is the underground pipeline, and 19 is the upper computer monitoring node. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and working principles.

[0025] like Figure 1 As shown, a pipeline leakage and positioning monitoring device is mainly composed of an acoustic sensor 1, a strong magnet 2, a probe cabin 4, a control circuit 7, a wireless transmission module 9, a battery pack 11, a battery compartment 12, and an antenna 15. It is installed on the outside of a pipeline 18 to monitor the leakage status and position in the underground pipeline 18, and wirelessly transmit the information to a host computer monitoring node 19 through the antenna 15.

[0026] The acoustic sensor 1, ferromagnet 2, control circuit 7, and wireless transmission module 9 are all installed in the probe cabin 4. The acoustic sensor 1 is connected to the ferromagnet 2 and placed in the front cavity of the probe cabin 4. The acoustic sensor 1 is connected to the control circuit 7 via the control circuit lead 6. The probe cabin cover 3 presses the ferromagnet 2. The probe cabin cover 3 and the probe cabin 4 are connected via threads. The control circuit 7 and the wireless transmission module 9 are connected via pins 8 and then fixed to the rear cavity of the probe cabin 4 via threads. The battery pack 11 is connected to the battery compartment 12. The antenna 15 is connected to the wireless transmission module 9 via antenna lead 13. The antenna 15 is fixedly connected to the back cover 14, and the back cover 14 and the battery compartment 12 are connected via threads.

[0027] The acoustic sensor 1 is made of piezoelectric ceramic material and converts the collected acoustic signals in the underground pipeline into electrical signals in real time.

[0028] like Figure 2As shown, the control circuit 7 includes a power supply circuit, a preprocessing circuit, an acquisition control circuit, and an SD card circuit. The power supply circuit converts the 3.7V voltage from the battery pack into a 3.3V power supply voltage through voltage reduction and filtering throughout the monitoring process, ensuring the normal operation of the entire control circuit. The preprocessing circuit amplifies the collected electrical signals through an operational amplifier, and then performs coupling, voltage division transmission, and filtering. The acquisition control circuit, equipped with a microcontroller ADC, filters and acquires the signals, while also controlling the wireless transmission module and SD card storage circuit to store and wirelessly transmit the information. The SD card storage circuit includes a memory chip for storing information during the processing process.

[0029] The wireless transmission module 9 adopts a 433MHz LORA wireless module to realize wireless transmission and reception of information.

[0030] The battery compartment 12 is connected to the probe compartment 4 via a snap-fit ​​structure 16 , which allows for easy disassembly and on / off control.

[0031] The control circuit 7 adopts a low power consumption design, and the battery pack 11 is powered by a 3.7V lithium battery, so that the device can work for a long time without power interruption.

[0032] like Figure 3 、 4 As shown, when the device is installed and used, the strong magnet 2 is first adsorbed and connected to the underground pipeline 18 to be monitored, and then the clamp 17 is passed through the fixing hole 5 to connect and fix to the underground pipeline 17, so as to achieve a reliable connection between the pipeline leakage monitoring device and the underground pipeline 18.

[0033] After the installation is completed, the sound of water flow (continuous ultrasonic wave) in the underground pipeline 18 penetrates the pipe wall, is received by the sound sensor 1 and converted into an electrical signal. The electrical signal is amplified by the pre-processing circuit on the control circuit 7 and sent to the microcontroller ADC of the acquisition control circuit on the control circuit 7 through the control circuit lead 6 for AD conversion and acquisition. The microcontroller performs frequency analysis on the information through FFT. After data analysis, comparison processing and judgment, it is stored through the SD card circuit on the control circuit 7, and then the signal is transmitted to the host computer monitoring node 19 through the wireless transmission module 9.

[0034] The device is deployed at multiple locations on the underground pipeline 18 and continuously collects and sends synchronous signals. After comparison and judgment by the host computer monitoring node 19, the algorithm can be used to accurately locate the leakage point of the underground pipeline 18 and issue an alarm signal.

[0035] According to existing data and literature, the frequency band of water flow sound waves in pipelines is mainly in the low frequency band. However, compared with water flow sound, water leakage sound has an obvious increase in relatively high-frequency components. By installing a fixed monitoring and positioning device on the outside of the pipeline, the sonar measurement principle is used to collect the high-frequency water sound in the pipeline. The sound sensor receives the sound signal of the sensed water flow, and the control circuit compares the frequency difference between the normal liquid flow water sound and the water sound with leakage, including the data of water flow sound under different pressures. After pre-processing and analysis, it is converted through A / D and transmitted to the upper computer monitoring node through the wireless communication module. Through the multi-point layout installation and synchronous transmission of the leakage monitoring and positioning device, the precise positioning of the leakage point can be achieved, thereby providing the location information of the leakage point. The monitoring is sensitive and reliable, the leakage point positioning is accurate, the degree of automation is high, and the installation and maintenance are simple.

Claims

1. A pipeline leakage monitoring and positioning device, comprising a probe compartment (4), a battery compartment (12), a rear cover (14), and a probe compartment cover (3), characterized in that: The probe compartment cover (3) is connected to the probe compartment (4) via a threaded connection, the probe compartment (4) is connected to the battery compartment (12) via a snap-fit ​​structure (16), and the battery compartment (12) is connected to the rear cover (14) via a threaded connection; The acoustic sensor (1) is connected to the strong magnet (2) and placed in the front cavity of the probe cabin (4). The acoustic sensor (1) is connected to the control circuit (7) through the control circuit lead (6). The probe cabin cover (3) presses the strong magnet (2). The control circuit (7) is connected to the wireless transmission module (9) through the pin (8) and is fixed to the rear cavity of the probe cabin (4) through a threaded connection. The control circuit (7) is connected to the battery pack (11) via a battery lead (10), the battery pack (11) is connected to the battery compartment (12), the antenna (15) is connected to the wireless transmission module (9) via an antenna lead (13) passing through the battery compartment (12), and the antenna (15) is fixedly connected to the back cover (14).

2. A pipeline leakage monitoring and positioning device according to claim 1, characterized in that: The acoustic sensor (1) is made of piezoelectric ceramic material and converts the acoustic signal collected in the underground pipeline into an electrical signal in real time.

3. A pipeline leakage monitoring and positioning device according to claim 1, characterized in that: The control circuit (7) includes a power supply circuit, a preprocessing circuit, an acquisition control circuit, and an SD card storage circuit. The power supply circuit is connected to the preprocessing circuit, the preprocessing circuit is connected to the acquisition control circuit, and the acquisition control circuit is connected to the SD card storage circuit. The power supply circuit converts the 3.7V voltage from the battery pack into a 3.3V power supply voltage through voltage reduction and filtering during the entire monitoring process, and the preprocessing circuit processes the collected electrical signals. The acquisition control circuit is provided with a microcontroller ADC to filter and acquire the signals, and at the same time control the wireless transmission module and the SD card storage circuit to store and wirelessly transmit the information. A storage chip is provided in the SD card storage circuit to store the information during the information processing process.

4. A pipeline leakage monitoring and positioning device according to claim 1, characterized in that: The wireless transmission module (9) adopts a 433MHz LORA wireless module to realize wireless transmission and reception of information.

5. The pipeline leakage monitoring and positioning device according to claim 1, characterized in that: The control circuit (7) adopts a low-power design, and the battery pack (11) is powered by a 3.7V lithium battery, so that the device can work for a long time without interruption of power supply.

6. A pipeline leakage monitoring and positioning device according to claim 1, characterized in that: The pipeline leakage monitoring and positioning device is fixed on the outside of the pipeline to be measured through strong magnetic adsorption and clamp connection.

7. A pipeline leakage monitoring and positioning device according to claim 1, characterized in that: The pipeline leakage monitoring and positioning device, the wireless transmission module is a 433MHz LORA wireless module.

8. The pipeline leakage monitoring and positioning device according to claim 1, characterized in that: The pipeline leakage monitoring and positioning device is deployed through multiple nodes to achieve accurate positioning of the leakage point.

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