A new type of anti-explosion acoustic wave pipeline leakage monitor

Abstract

The application relates to the technical field of sound wave signal collection, and discloses a novel anti-explosion sound wave pipeline leakage monitoring instrument, which comprises an anti-explosion shell, a sound wave gathering cavity is embedded in the inner upper end of a fixed base, a bubble grid is embedded in one end of the sound wave gathering cavity, a sensor mounting seat is arranged at the upper end of the sound wave gathering cavity, and the sensor mounting seat is in threaded connection with the fixed base; the application can convert sound wave signals into electric signals and is used for detecting pipeline network leakage signals; the application has the anti-explosion function and can be used in explosion-proof occasions; the application has the sound wave gathering cavity, can improve the leakage sound wave signals, and improves the sensitivity of the leakage detection; the application has the bubble grid, can filter out the bubbles generated by the liquid flow in the pipeline network, reduces the false alarm rate, and improves the leakage detection precision; the application has a needle valve which has three states of connection, exhaust and closing, is used for connecting and closing the monitoring instrument, and is also used for discharging the air in the pipeline network.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of acoustic wave signal collection, and specifically relates to a novel anti-explosion acoustic wave pipeline leakage monitoring instrument. BACKGROUND

[0002] In industrial production, the safe and stable operation of a pipeline system is crucial. Traditional pipeline leakage detection methods often rely on manual inspection or pressure change monitoring, which are not only inefficient but also difficult to detect small leaks in a timely manner. In particular, in high-pressure and explosive environments, pipeline leakage detection faces greater challenges. Therefore, it is particularly important to develop a monitoring device that can accurately monitor pipeline leakage in real time while having anti-explosion function. SUMMARY

[0003] In view of the above, in order to overcome the defects of the prior art, the application provides a novel anti-explosion acoustic wave pipeline leakage monitoring instrument, which effectively solves the problems raised in the background.

[0004] To achieve the above purpose, the application provides the following technical scheme: a novel anti-explosion acoustic wave pipeline leakage monitoring instrument, comprising an anti-explosion shell, a connector, an acoustic wave signal conversion module, a sensor mounting seat, an acoustic wave sensor, an acoustic wave gathering cavity, a bubble grid, a needle valve, an exhaust hole, a fixed base, a filter screen, a quick mounting connector, an explosion-proof wire hole, a wiring terminal, a front end cover and a rear end cover, the fixed base is internally embedded with the acoustic wave gathering cavity at the upper end, the acoustic wave gathering cavity is embedded with the bubble grid at one end, the acoustic wave gathering cavity is provided with the sensor mounting seat at the upper end, the sensor mounting seat is threadedly connected with the fixed base, the sensor mounting seat is internally embedded with the acoustic wave sensor, the sensor mounting seat is connected with the anti-explosion shell at the upper end, one end of the anti-explosion shell is connected with the connector, the anti-explosion shell is internally provided with the acoustic wave signal conversion module, the anti-explosion shell is internally provided with the wiring terminal away from the acoustic wave signal conversion module, one end of the anti-explosion shell is connected with the front end cover, and the other end of the anti-explosion shell is connected with the rear end cover.

[0005] Preferably, the fixed base is threadedly connected with the quick mounting connector at the lower end, and the quick mounting connector is provided with the filter screen at the connecting end of the fixed base.

[0006] Preferably, one side end of the fixed base is threadedly connected with the needle valve, and the needle valve is provided with the exhaust hole at the lower end.

[0007] Preferably, the sensor mounting seat and the acoustic wave signal conversion module are connected through a coaxial cable.

[0008] Preferably, the anti-explosion shell is internally provided with the explosion-proof wire hole.

[0009] Compared with the prior art, the application has the following beneficial effects:

[0010] 1、The present application can convert acoustic signal into electric signal, which is used for pipe network leakage signal detection;

[0011] 2、The present application has explosion-proof function, which can be used in explosion-proof occasions;

[0012] 3、The present application has acoustic wave gathering cavity, which can improve leakage acoustic signal and improve the sensitivity of leakage detection;

[0013] 4、The present application has bubble grid, which can filter out bubbles generated by pipe network liquid flow, reduce false alarm rate, and improve the accuracy of leakage detection;

[0014] 5、The present application has a needle valve, which has three states of on, exhaust and off, which is used for connecting and closing the monitor, and also used for discharging air in the pipe network. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, which together with the embodiments of the present application serve to explain the present application, and do not constitute a limitation on the present application.

[0016] In the drawings:

[0017] Fig. 1 is a structural schematic diagram of the present application;

[0018] Fig. 2 is a schematic diagram of the mounting structure of the terminal of the present application;

[0019] Fig. 3 is a schematic diagram of the appearance structure of the present application;

[0020] In the figure: 1, explosion-proof shell; 2, connector; 3, acoustic signal conversion module; 4, sensor mounting seat; 5, acoustic sensor; 6, acoustic wave gathering cavity; 7, bubble grid; 8, needle valve; 9, exhaust hole; 10, fixed base; 11, filter screen; 12, quick mounting connector; 13, explosion-proof hole; 14, terminal; 15, front end cover; 16, rear end cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments of the present application; based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] Example one, by Figs. 1-3The present application comprises an explosion-proof shell 1, a connector 2, a sound wave signal conversion module 3, a sensor mounting seat 4, a sound wave sensor 5, a sound wave gathering cavity 6, a bubble grid 7, a needle valve 8, an exhaust hole 9, a fixed base 10, a filter screen 11, a quick mounting joint 12, an explosion-proof wire hole 13, a wiring terminal 14, a front end cover 15 and a rear end cover 16. The sound wave gathering cavity 6 is embedded in the upper end of the fixed base 10. One end of the sound wave gathering cavity 6 is embedded with the bubble grid 7. The upper end of the sound wave gathering cavity 6 is provided with the sensor mounting seat 4. The sensor mounting seat 4 is threadedly connected with the fixed base 10. The inside of the sensor mounting seat 4 is embedded with the sound wave sensor 5. The upper end of the sensor mounting seat 4 is connected with the explosion-proof shell 1. One end of the explosion-proof shell 1 is connected with the connector 2. The inside of the explosion-proof shell 1 is installed with the sound wave signal conversion module 3. The inside of the explosion-proof shell 1 away from the sound wave signal conversion module 3 is installed with the wiring terminal 14. One end of the explosion-proof shell 1 is connected with the front end cover 15. The other end of the explosion-proof shell 1 is connected with the rear end cover 16.

[0023] The lower end of the fixed base 10 is threadedly connected with the quick mounting joint 12. The connecting end of the quick mounting joint 12 and the fixed base 10 is provided with the filter screen 11.

[0024] One side end of the fixed base 10 is threadedly connected with the needle valve 8. The lower end of the needle valve 8 is provided with the exhaust hole 9.

[0025] The sensor mounting seat 4 and the sound wave signal conversion module 3 are connected through a coaxial cable.

[0026] The inside of the explosion-proof shell 1 is provided with the explosion-proof wire hole 13.

[0027] The explosion-proof shell 1 is made of high-strength explosion-proof material to protect the internal electronic components from external explosion impact.

[0028] The connector 2 is used to connect external cables or data lines to realize signal transmission.

[0029] The sound wave signal conversion module 3 is responsible for amplifying, detecting and processing the electrical signals collected by the sound wave sensor.

[0030] The sensor mounting seat 4 is used to install and fix the sound wave sensor 5.

[0031] The sound wave sensor 5 has high sensitivity and is used to capture sound wave signals in the pipeline.

[0032] The sound wave gathering cavity 6 is designed in a spiral structure to enhance the strength of the sound wave signal.

[0033] The bubble grid 7 filters out the bubble interference in the sound wave signal.

[0034] The needle valve 8 has three states of connection, exhaust and closing, and is used to control the air discharge and liquid isolation in the pipeline.

[0035] Exhaust hole 9: cooperate with needle valve 8 to realize exhaust function;

[0036] Fixed base 10: support the entire monitor, facilitate installation and fixation;

[0037] Filter screen 11: filter impurities in the pipeline, protect internal components;

[0038] Quick mounting connector 12: facilitate quick connection and disconnection of the monitor and the pipeline;

[0039] Explosion-proof wire hole 13: ensure that the wire enters the explosion-proof housing 1 while maintaining the explosion-proof performance;

[0040] Terminal 14: provide a connection point with external circuits;

[0041] Front end cover 15 and rear end cover 16: close the explosion-proof housing 1 and protect internal components.

[0042] When assembled, the sound wave signal conversion module 3 is fixed inside the explosion-proof housing 1 by screws, the sound wave sensor 5 is fixed in the sensor mounting seat 4, and is connected with the sound wave signal conversion module 3 through a coaxial cable. The external cable passes through the explosion-proof wire hole 13 through the connector 2, is connected to the terminal 14, and the terminal 14 is connected with the sound wave signal conversion module 3, completing the electrical signal transmission;

[0043] The filter screen 11 is placed from the bottom end of the fixed base 10, the quick mounting connector 12 is screwed into the fixed base 10 with external threads, and is tightened to tightly fix the filter screen 11 and the fixed base 10. The valve body of the needle valve 8 is connected with the side surface of the fixed base 10 through threads, the valve body of the needle valve 8 is designed with an exhaust hole 9, the bubble grid 7 is first embedded into one end of the sound wave aggregation cavity 6, and then is placed into the fixed base 10 from the top end, the sound wave sensor 5 is placed into the sensor mounting seat 4 and is fixed through a nut, the explosion-proof housing 1 and the sensor mounting seat 4 are assembled into the fixed base 10 to form a rigid whole, and then are connected with the pipeline to be detected through the quick mounting connector 12;

[0044] Working principle: when in use, the quick mounting connector 12 is connected with the pipeline to be detected, the pipeline to be detected is filled with liquid under certain pressure, the pressure in the pipeline to be detected changes little when the liquid flows normally, and the sound wave sensor 5 collects an acoustic signal with very small amplitude fluctuation;

[0045] When the breakage in the pipe network is detected, the liquid in the pipe network is pushed by the pressure, and gathers to the breakage to spray outwards. The breakage will produce a strong sound wave signal, which will propagate along the direction of the liquid flow, pass through the inner cavity of the quick installation joint 12, and be transmitted to the filter screen 11. The filter screen 11 can filter out the larger impurities in the pipe network. The needle valve 8 is usually in the open state. The sound wave signal passes through the needle valve 8 to reach the bubble grid 7. The bubble grid 7 can filter out the bubbles reaching here. The inside of the sound wave gathering cavity 6 is a spiral structure, which has a great strengthening effect on the sound wave signal. The sound wave sensor 5 collects the sound wave signal propagating to here and converts it into an electric signal to be transmitted to the sound wave signal conversion module 3. The sound wave signal conversion module 3 amplifies, detects and processes the sound wave signal, and then outputs the electric signal in the format required by the user. The sound wave signal conversion module 3 has a 4-20mA current output interface, a pulse signal output interface and an RS-485 interface output interface, which facilitates user collection.

[0046] The needle valve 8 has three working states of connection, exhaust and closing. It is normally in the connected state. When the pipe network is filled with liquid, there is a lot of air in the pipe network. After the air is compressed by the liquid, it gathers into the cavity of the sound wave pipe network leak detector. Because the air is compressible, it has a great attenuation effect on the sound wave signal. At this time, the needle valve 8 is in the exhaust state, and the air in the pipe network will be discharged through the exhaust hole 9 of the needle valve 8, thereby improving the detection accuracy. When the sensor 5 needs to be replaced, the needle valve 8 is rotated to the closed state to isolate the liquid in the pipe network, thereby facilitating replacement and maintenance.

Claims

1. A novel explosion-proof acoustic pipeline leak detector, comprising an explosion-proof housing (1), a connector (2), an acoustic signal conversion module (3), a sensor mounting base (4), an acoustic sensor (5), an acoustic focusing cavity (6), a bubble grid (7), a needle valve (8), an exhaust port (9), a fixed base (10), a filter screen (11), a quick-install connector (12), an explosion-proof wiring hole (13), a wiring terminal (14), a front end cover (15), and a rear end cover (16), characterized in that: The upper end of the fixed base (10) is fitted with a sound wave focusing cavity (6), one end of the sound wave focusing cavity (6) is fitted with a bubble grid (7), the upper end of the sound wave focusing cavity (6) is provided with a sensor mounting seat (4), the sensor mounting seat (4) is threadedly connected to the fixed base (10), the sensor mounting seat (4) is fitted with a sound wave sensor (5), the upper end of the sensor mounting seat (4) is connected to an explosion-proof housing (1), one end of the explosion-proof housing (1) is connected to a connector (2), the inside of the explosion-proof housing (1) is fitted with a sound wave signal conversion module (3), the inside of the explosion-proof housing (1) is fitted with a wiring terminal (14) on the side away from the sound wave signal conversion module (3), one end of the explosion-proof housing (1) is connected to a front end cover (15), and the other end of the explosion-proof housing (1) is connected to a rear end cover (16). A needle valve (8) is threadedly connected to one side of the fixed base (10), and an exhaust hole (9) is provided at the lower end of the needle valve (8). The needle valve (8) has three working states: on, vent, and off. Normally, it is in the on state. When the detection pipeline is filled with liquid, there is a lot of air in the detection pipeline. After the air is compressed by the liquid, it gathers in the cavity of the sonic pipeline leak detector. Because the air is compressible, it has a large attenuation effect on the sound wave signal. At this time, the needle valve (8) is in the vent state, and the air in the pipeline will be discharged through the vent hole (9) of the needle valve (8). When the sensor (5) needs to be replaced, the needle valve (8) is turned to the off state to isolate the liquid in the pipeline.

2. The novel explosion-proof acoustic pipeline leak detector according to claim 1, characterized in that: The lower end of the fixed base (10) is threaded with a quick-installation connector (12), and the connection end between the quick-installation connector (12) and the fixed base (10) is provided with a filter screen (11).

3. The novel explosion-proof acoustic pipeline leakage monitor according to claim 1, characterized in that: The sensor mounting base (4) is connected to the acoustic signal conversion module (3) via a coaxial cable.

4. The novel explosion-proof acoustic pipeline leak detector according to claim 1, characterized in that: The explosion-proof housing (1) has an explosion-proof wire hole (13) inside.

Images