Gas pipeline leakage acoustic wave detection device

Abstract

The utility model relates to gas pipeline technical field, and disclose gas pipeline leak sound wave detection device, including: pipeline one, one end of pipeline one is provided with pipeline two, connecting assembly, connecting assembly sets up one end of pipeline one, among them, connecting assembly includes connecting site, fixed position, connecting site, fixed position all set up one end of pipeline one, detection assembly, detection assembly sets up one end of pipeline one, among them, detection assembly includes detection site, location site, the utility model discloses through setting detection site, adopts high sensitivity piezoelectric microphone and acceleration sensor to constitute compound array, microphone is responsible for gathering the leak sound wave that spreads in the air, and acceleration sensor is close -fitted pipeline outer wall, captures the sound wave signal of pipeline vibration transmission, and double collection can reduce the influence of environmental interference (such as wind sound, traffic noise), improves the precision of sound wave leak detection.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline technology, specifically to a gas pipeline leak acoustic detection device. Background Technology

[0002] Gas pipelines are a crucial component of urban energy supply systems, playing a vital role in transporting clean energy sources such as natural gas from gas sources to users. Their safe and stable operation is directly related to social production, daily life, and public safety. These pipelines typically utilize high-strength, corrosion-resistant metal or composite materials, forming a closed transmission network through processes such as welding and flange connections. They must meet certain pressure-bearing requirements to ensure efficient gas transmission while also possessing excellent sealing properties to prevent gas leaks.

[0003] Urban gas pipelines are often laid in complex environments (such as under roads or around buildings). The sources of environmental noise are diverse and their intensity fluctuates greatly. A single sensor is difficult to accurately identify the characteristic sound waves of leakage in complex noise, which leads to the detection accuracy being significantly limited by the scene. In a quiet environment, the positioning error may be controlled within 1m, but in noisy road sections, the error often expands to more than 5m, which cannot meet the needs of early and accurate detection for the safe operation and maintenance of gas pipelines. Utility Model Content

[0004] The purpose of this invention is to provide a gas pipeline leakage acoustic detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gas pipeline leakage acoustic detection device, comprising: a pipeline one, with a pipeline two provided at one end of the pipeline one;

[0006] A connecting component, wherein the connecting component is disposed at one end of the pipe;

[0007] The connecting component includes a connecting part and a fixing part, both of which are located at one end of the pipe.

[0008] A detection component is disposed at one end of the pipeline.

[0009] The detection component includes a detection part and a positioning part, both of which are located at one end of the pipeline.

[0010] The detection unit includes an accelerometer, a digital converter electrically connected to the top of the accelerometer, a processor electrically connected to the top of the digital converter, a piezoelectric microphone disposed on one side of the accelerometer, a preamplifier electrically connected to the top of the piezoelectric microphone, and a bandpass filter electrically connected to one side of the preamplifier.

[0011] Preferably, the connecting part includes an arc-shaped plate one, an arc-shaped plate two is provided on one side of the arc-shaped plate one, a frame is fixedly installed on the top of the arc-shaped plate one, and a mesh plate is fixedly installed on the top of the frame.

[0012] Preferably, both the first and second arc-shaped plates are in contact with the first and second pipes, respectively, and the second arc-shaped plate is fixedly installed with the frame. Both the first and second arc-shaped plates have processors fixedly installed inside them.

[0013] Preferably, the fixing part includes a plate one, which is disposed at one end of the pipe one, and a plate two is fixedly installed at one end of the pipe two. A sleeve is provided at the top of the pipe one, and a connecting rod is provided at the bottom of the pipe one. The plate one is fixedly installed at the top of the arc plate one, and the plate two is fixedly installed at the top of the arc plate two. The two ends of the connecting rod are rotatably installed with the arc plate one and the arc plate two, respectively.

[0014] Preferably, the positioning part includes a communication module, one side of which is electrically connected to a warning light, one side of which is fixedly mounted with a connector, and the other side of which is electrically connected to a buzzer.

[0015] Preferably, the communication module is fixedly installed with the first arc plate and the second arc plate respectively, the connecting seat is fixedly installed with the first arc plate and the second arc plate respectively, the buzzer is electrically connected to the processor, and the bandpass filter is electrically connected to the digital converter.

[0016] This utility model provides an acoustic detection device for gas pipeline leaks. It has the following beneficial effects:

[0017] (1) This utility model sets up a detection part and uses a composite array composed of a high-sensitivity piezoelectric microphone and an accelerometer. The microphone is responsible for collecting the leakage sound waves propagating in the air, while the accelerometer is close to the outer wall of the pipe to capture the sound wave signal transmitted by the pipe vibration. The dual acquisition can reduce the influence of environmental interference (such as wind noise and traffic noise) and improve the accuracy of sound wave leakage detection.

[0018] (2) By setting up a positioning part, the processor will send a signal to the buzzer when the sound wave leakage is detected by the built-in algorithm of the processor. The buzzer will make a sound and the warning light will flash at the same time. The detection components are set at equal intervals around the pipe connection. The specific location of the sound wave leakage can be quickly known according to the warning light and the buzzer, which makes it convenient for staff to take corresponding measures in a timely manner. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a top view of the present invention;

[0021] Figure 3 This is a right view of the present invention;

[0022] Figure 4 This is a view of the internal structure of the present invention;

[0023] Figure 5 This utility model Figure 2 A magnified view of part A;

[0024] Figure 6 This utility model Figure 3 A magnified view of part B;

[0025] Figure 7 This utility model Figure 4 A magnified view of part of C.

[0026] In the diagram: 1 Pipe 1, 2 Pipe 2, 3 Connecting assembly, 31 Connecting part, 311 Arc plate 1, 312 Arc plate 2, 313 Frame, 314 Mesh plate, 32 Fixing part, 321 Plate 1, 322 Plate 2, 323 Sleeve, 324 Connecting rod, 4 Detection assembly, 41 Detection part, 411 Accelerometer, 412 Digital converter, 413 Processor, 414 Piezoelectric microphone, 415 Preamplifier, 416 Bandpass filter, 42 Positioning part, 421 Communication module, 422 Connecting base, 423 Warning light, 424 Buzzer. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] Example 1

[0030] A preferred embodiment of the gas pipeline leakage acoustic detection device provided by this utility model is, for example... Figure 1-7 As shown: Gas pipeline leak acoustic detection device, including: pipeline 1, with pipeline 2 installed at one end of pipeline 1;

[0031] Connection component 3 is located at one end of pipe 1;

[0032] The connecting component 3 includes a connecting part 31 and a fixing part 32, both of which are located at one end of the pipe 1.

[0033] The connecting part 31 includes an arc-shaped plate 311, an arc-shaped plate 312 is provided on one side of the arc-shaped plate 311, a frame 313 is fixedly installed on the top of the arc-shaped plate 311, a mesh plate 314 is fixedly installed on the top of the frame 313, the arc-shaped plate 311 and the arc-shaped plate 312 are in contact with the pipe 1 and the pipe 2, the arc-shaped plate 312 is fixedly installed with the frame 313, and a processor 413 is fixedly installed inside the arc-shaped plate 311 and the arc-shaped plate 312.

[0034] The fixed part 32 includes a plate 321, which is located at one end of the pipe 1. The plate 322 is fixedly installed at one end of the pipe 2. A sleeve 323 is provided at the top of the pipe 1, and a connecting rod 324 is provided at the bottom of the pipe 1. The plate 321 is fixedly installed at the top of the arc plate 311, and the plate 322 is fixedly installed at the top of the arc plate 312. The two ends of the connecting rod 324 are rotatably installed with the arc plate 311 and the arc plate 312, respectively.

[0035] One end of pipe 1 is fixedly connected to one end of pipe 2. Arc plate 1 311 and arc plate 2 312 are sleeved and installed at the connection between the pipes. The arc plate 1 311 and arc plate 2 312 are both equipped with detection components 4 to detect the connection between the pipes.

[0036] The bottom ends of the first arc plate 311 and the second arc plate 312 are rotatably connected by a connecting rod 324. The top of the first arc plate 311 is fixedly installed with a plate 321, and the top of the second arc plate 312 is fixedly installed with a plate 322. The first plate 321 and the second plate 322 are fitted together, and the first plate 321 and the second plate 322 are snapped together by a clamp 323. The top ends of the first arc plate 311 and the second arc plate 312 are fixedly installed. The detection component 4 is installed at the pipe connection.

[0037] Example 2

[0038] Based on Embodiment 1, a preferred embodiment of the gas pipeline leakage acoustic detection device provided by this utility model is, for example... Figure 1-7 As shown: Detection component 4, which is installed at one end of pipe 1;

[0039] The detection component 4 includes a detection part 41 and a positioning part 42, both of which are located at one end of the pipe 1.

[0040] The detection unit 41 includes an accelerometer 411, a digital converter 412 electrically connected to the top of the accelerometer 411, a processor 413 electrically connected to the top of the digital converter 412, a piezoelectric microphone 414 disposed on one side of the accelerometer 411, a preamplifier 415 electrically connected to the top of the piezoelectric microphone 414, and a bandpass filter 416 electrically connected to one side of the preamplifier 415.

[0041] The positioning part 42 includes a communication module 421. One side of the communication module 421 is electrically connected to a warning light 423. A connector 422 is fixedly installed on one side of the warning light 423. The other side of the communication module 421 is electrically connected to a buzzer 424. The communication module 421 is fixedly installed to the first arc plate 311 and the second arc plate 312 respectively. The connector 422 is fixedly installed to the first arc plate 311 and the second arc plate 312 respectively. The buzzer 424 is electrically connected to the processor 413. The bandpass filter 416 is electrically connected to the digital converter 412.

[0042] An accelerometer 411 is attached to the outer wall of pipe 2 to capture the sound wave signal transmitted by pipe vibration. A piezoelectric microphone 414 is responsible for collecting the leakage sound wave propagating in the air. After the sound wave signal is amplified by a preamplifier 415, it is filtered by a bandpass filter 416 to remove low-frequency vibration and high-frequency electromagnetic interference, retaining the effective frequency band of the leakage sound wave. The sound wave signal collected by the piezoelectric microphone 414 needs to be amplified by the preamplifier 415 before entering the subsequent processing stage to ensure that the weak acoustic signal can be accurately captured and analyzed. A digital converter 412 converts the analog sound wave signal into a digital signal to ensure that the signal details are not lost and to provide high-quality data for subsequent analysis. The processor 413 can be a chip based on the ARM Cortex-A9 architecture, equipped with 512MB of memory. DDR3 memory and 4GB flash memory serve as the core carriers for data processing and analysis. They integrate a dedicated digital signal processing module, which can efficiently run various algorithms to achieve real-time analysis and processing of sound wave signals. The built-in noise separation algorithm based on wavelet transform can extract the characteristic spectrum of leaked sound waves from complex background noise. It can also analyze the time-frequency characteristics of sound waves through short-time Fourier transform to distinguish between transient interference (such as knocking on pipes) and sound waves generated by continuous leakage.

[0043] When the processor 413 detects a sound wave leak using its built-in algorithm, it sends a signal to the buzzer 424, which then sounds. Simultaneously, the warning light 423 flashes. The detection components 4 are equidistantly arranged around the pipe connection points, allowing for quick identification of the specific location of the sound wave leak based on the warning light 423 and the buzzer 424. The top of the buzzer 424 is equipped with a frame 313 and a mesh plate 314, which provide some protection for the detection components 4.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gas pipeline leak acoustic detection device, characterized in that, It includes: pipe one (1), and pipe two (2) is provided at one end of pipe one (1); A connecting component (3) is disposed at one end of the pipe (1); The connecting component (3) includes a connecting part (31) and a fixing part (32), and the connecting part (31) and the fixing part (32) are both located at one end of the pipe (1); Detection component (4), the detection component (4) is disposed at one end of pipe one (1); The detection component (4) includes a detection part (41) and a positioning part (42), both of which are located at one end of the pipe (1). The detection unit (41) includes an accelerometer (411), the top of which is electrically connected to a digital converter (412), the top of which is electrically connected to a processor (413), a piezoelectric microphone (414) is provided on one side of the accelerometer (411), the top of which is electrically connected to a preamplifier (415), and a bandpass filter (416) is electrically connected to one side of the preamplifier (415).

2. The acoustic detection device for gas pipeline leakage according to claim 1, characterized in that: The connecting part (31) includes an arc-shaped plate (311), an arc-shaped plate (312) is provided on one side of the arc-shaped plate (311), a frame (313) is fixedly installed on the top of the arc-shaped plate (311), and a mesh plate (314) is fixedly installed on the top of the frame (313).

3. The gas pipeline leakage acoustic detection device according to claim 2, characterized in that: The first arc plate (311) and the second arc plate (312) are in contact with the first pipe (1) and the second pipe (2). The second arc plate (312) is fixedly installed with the frame (313). The processor (413) is fixedly installed inside the first arc plate (311) and the second arc plate (312).

4. The gas pipeline leakage acoustic detection device according to claim 1, characterized in that: The fixed part (32) includes a plate one (321), which is set at one end of the pipe one (1). The plate two (322) is fixedly installed at one end of the pipe two (2). A sleeve (323) is provided at the top of the pipe one (1). A connecting rod (324) is provided at the bottom of the pipe one (1). The plate one (321) is fixedly installed at the top of the arc plate one (311). The plate two (322) is fixedly installed at the top of the arc plate two (312). The two ends of the connecting rod (324) are rotatably installed with the arc plate one (311) and the arc plate two (312) respectively.

5. The acoustic detection device for gas pipeline leakage according to claim 1, characterized in that: The positioning part (42) includes a communication module (421), one side of which is electrically connected to a warning light (423), one side of which is fixedly installed with a connector (422), and the other side of which is electrically connected to a buzzer (424).

6. The acoustic detection device for gas pipeline leakage according to claim 5, characterized in that: The communication module (421) is fixedly installed on the first arc plate (311) and the second arc plate (312) respectively. The connecting seat (422) is fixedly installed on the first arc plate (311) and the second arc plate (312) respectively. The buzzer (424) is electrically connected to the processor (413). The bandpass filter (416) is electrically connected to the digital converter (412).

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