CN212204060U - A detection device for fluid leakage in a pipeline - Google Patents

Abstract

The utility model provides a detection device for fluid leakage in a pipeline, comprising a body, a top cover and a base, a circuit board is arranged on the upper end surface of the base, and a TF card storage module, a battery module and a rotation sensor are welded on the circuit board; A motor is installed on the end face, and a propeller blade is connected to the output end of the motor; a silicon rubber sheet is installed on the outer side of the lower end face of the base, a groove is formed on the outer wall surface of the silicon rubber sheet, and a film sensor is installed in the cavity of the groove. The utility model advances in the pipeline at a constant speed, and by reading the data on the memory card, the horizontal distance between the leakage point and the pipeline port and the angle of the leakage point relative to the pipeline are obtained, so as to realize the location of the leakage position of the pipeline, which is convenient to use and has applicability Strong, compact structure, good sealing effect, greatly saves the ineffective operation time of pipeline maintenance workers, reduces the loss and waste of water resources during pipeline transportation, saves costs and human resources, has high economic benefits, and has a good market prospect.

Description

A detection device for fluid leakage in a pipeline

technical field

The utility model belongs to the technical field of pipeline leak detection, in particular to a detection device for fluid leakage in a pipeline.

Background technique

With the development of the economy and the improvement of the degree of industrialization, people's demand for raw materials necessary for production and life such as water, oil, and natural gas is increasing. For fluid natural resources such as water, oil, and natural gas, we generally use pipeline transportation. . Because pipeline transportation has the advantages of large volume, small footprint, safety and reliability. However, the loss caused by fluid leakage during pipeline transportation cannot be ignored either. According to statistics, water supply systems in cities around the world lose an average of nearly 20% of the total water supply each year due to pipeline leakage. These leakages will not only make the world's water resources further scarce, but also erode the foundation and damage the ground, which will bring great trouble to people's production and life.

Traditional pipeline leak detection methods include passive leak detection method, audio-visual leak detection method, related leak detection method, automatic water leakage detection method and partition leak detection method. The resulting sound changes are largely limited by the working environment, and have disadvantages such as time-consuming and labor-intensive, labor-intensive, low detection efficiency, and inaccurate location of leak points, and poor applicability.

The Chinese invention patent application with the patent number 201710924126.1 discloses a pipeline leak detection device, including a sealed shell, the shell is divided into an upper shell and a lower shell, and the surface of the lower shell is provided with a data acquisition module for collecting the inner surface of the pipeline. The data information of the liquid flow, the information of the fluid including the temperature, pressure or sound changes before the pipeline leak detection device reaches the leak port; the GPS signal transceiver module continuously transmits the signal of the position information to the intermediate server; the position that the terminal intelligent server will accept The signal and fluid information are integrated, and the location where the fluid information changes is the location of the leak. The whole scheme utilizes the buoyancy of the device and the flow of the fluid, opens the second exhaust valve to discharge the gas, and causes the pipeline leak detection device to sink to the position of the leakage port, and then fill the compressed air in the compressed air bag through the first exhaust valve. Between the elastic membrane covering and the upper casing, the pipeline leak detection device floats up to its original position. However, it has no power by itself, and only uses buoyancy and fluid flow, which is easily affected by the external environment. The movement direction of the device can only be consistent with the flow direction of the fluid, which limits its practical application, and the device is easy to collide with the pipeline when it sinks. With friction, the service life is short.

Utility model content

The purpose of the utility model is to aim at the deficiencies of the prior art, to provide a detection device for fluid leakage in the pipeline, which is used to detect whether there is leakage in the pipeline and to locate the location of the pipeline leakage, so as to greatly save the ineffective operation time of pipeline maintenance workers. , reducing the loss and waste of water resources in the process of pipeline transportation, convenient use and high detection efficiency.

The technical scheme of the present utility model is:

A detection device for fluid leakage in a pipeline, comprising a body, a top cover and a base, wherein the top cover is installed on the upper part of the body, and the base is installed at the lower part of the body; the upper end face of the base is equipped with a circuit board, and the circuit board is installed in the In the inner cavity of the fuselage; the TF card storage module, the battery module and the rotation sensor are welded on the circuit board; the lower end of the base is equipped with a motor, and the output end of the motor is connected with a propeller blade; the outer ring of the lower end of the base is installed A silicon rubber sheet is installed, a groove is formed on the outer wall surface of the silicon rubber sheet, and a thin film sensor is installed in the inner cavity of the groove.

In the above solution, a first card slot is formed on both sides of the top of the inner cavity of the fuselage, and a second card slot is formed on both sides of the bottom of the inner cavity of the body; A clamping column; a second clamping column is integrally formed on the tops of the surfaces of the two side walls of the base.

In the above solution, the top cover is connected to the fuselage through a first card slot and a first card column; the base is connected to the fuselage through a second card slot and a second card column; the body is connected to the top cover and the base into a nested structure.

In the above solution, the outer diameter of the first clamping post is the same as the inner diameter of the first clamping slot; the outer diameter of the second clamping post is the same as the inner diameter of the second clamping slot.

In the above solution, the motor is installed at the center of the bottom of the base; the radial distance between the motor and the silicone rubber sheet is larger than the diameter of the propeller blade.

In the above solution, the grooves on the silicone rubber sheet are distributed in an array, and the projection angle between the groove on the right side of the silicone rubber sheet and the rotation sensor on the base is θ.

In the above solution, the circuit board is electrically connected to the TF card storage module, the battery module, the rotation sensor, the thin film sensor and the motor through wires, respectively.

In the above solution, the body is made of soft rubber material, and the top cover and the base are made of photosensitive resin material.

Compared with the prior art, the beneficial effects of the present utility model are:

1. The detection device moves at a constant speed in the pipeline through the driving device, which is not easily disturbed by the external environment and has good stability. At this time, the pressure curve fitted by the film sensor is a relatively stable horizontal line. The leakage generates a certain suction and changes the original stress state of the sensor, and a peak will appear in the fitted pressure curve, thus inferring that there is a leak in the pipeline.

2. By reading the peak time of the pressure data and reading the forward speed of the driving device, the distance of the device is calculated, and the angle of the leakage point in the pipeline is obtained according to the rotation sensor, so as to locate the leakage point of the pipeline and greatly save the pipeline. Ineffective operation time of maintenance workers, at the same time, the loss and waste of water resources during pipeline transportation are reduced, and the detection efficiency is high.

3. The clamping column and the clamping groove are in a nested relationship, which is easy to install and disassemble. The outer diameter of the clamping column is the same as the inner diameter of the clamping groove. The clamping column is embedded in the clamping groove, and a waterproof sealing ring is installed in the clamping groove. The inner cavity blocks the infiltration of liquid and protects the safety of the device.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a top sectional view of the present invention.

Figure 3 is an internal cross-sectional view of the utility model.

Figure 4 is a bottom view of the base of the present invention.

In the picture:

1-Body; 101-First Card Slot; 102-Second Card Slot; 2-Top Cover; 201-First Card Post; 3-Base; 301;Second Card Post; 4-Silicone Rubber Sheet;5- circuit board; 501-TF card storage module; 6-battery module; 7-groove; 8-film sensor; 9-motor; 10-propeller blade; 11-rotation sensor.

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present utility model is not limited thereto.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The azimuth or positional relationship indicated is based on the azimuth or positional relationship shown in the accompanying drawings, or the azimuth or positional relationship that is usually placed when the utility model is used, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating Or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," "third," etc. are only used to differentiate the descriptions, and not immediately to indicate or imply relative importance.

As shown in FIGS. 1 to 4 , the device for detecting fluid leakage in the pipeline according to the present invention includes a body 1 , a top cover 2 and a base 3 , the top cover 2 is mounted on the upper part of the body 1 , and the base 3 is mounted on the body 1 The lower part; the fuselage 1 is made of soft rubber material, which is lightweight, elastic, and anti-aging. It can be integrally formed by 3D printing technology, and can achieve the expected waterproof and lightweight effects. The top cover 2 and the base 3 are made of photosensitive resin material, which can also be completed by 3D printing, and have good waterproof and structural support functions.

A first card slot 101 is formed on both sides of the top of the inner cavity of the body 1, and a second card slot 102 is formed on both sides of the bottom of the inner cavity of the body 1; both sides of the bottom of the outer wall surface of the top cover 2 are integrally formed with a first groove The clamping column 201; the tops of the two side walls of the base 3 are integrally formed with a second clamping column 301. The top cover 2 is connected to the body 1 through the first card slot 101 and the first card post 201; the base 3 is connected to the body 1 through the second card slot 102 and the second card column 301; the body 1 is connected to the top cover 2 , the base 3 is a nested structure. The outer diameter of the first clamping post 201 is the same as the inner diameter of the first clamping slot 101 ; the outer diameter of the second clamping post 301 is the same as the inner diameter of the second clamping slot 102 . It is convenient for the staff to install and disassemble flexibly and at the same time seal the inner cavity of the device. A waterproof sealing ring is installed in the card groove to prevent the liquid in the pipeline from infiltrating and protect the safety of the device.

A circuit board 5 is installed on the upper end of the base 3, and the circuit board 5 is installed in the inner cavity of the fuselage 1; the circuit board 5 is welded with a TF card storage module 501 and a battery module 6; the lower end of the base 3 is equipped with a motor 9, and the motor 9 is installed At the central position of the bottom of the base 3, the output end of the motor 9 is connected with a propeller blade 10, and the entire device can travel at a uniform speed in the pipeline due to the mutual cooperation of the motor and the propeller blade, avoiding the device being affected by the resistance of the fluid in the pipeline and stagnation, It is not easily disturbed by the external environment, has good stability, and has a long service life; the outer ring of the lower end face of the base 3 is equipped with a silicone rubber sheet 4, and the radial distance between the motor 9 and the silicone rubber sheet 4 is larger than the diameter of the propeller blade 10 to avoid When the propeller blade collides with the silicone rubber sheet, there is a gap between the silicone rubber sheet 4 and the outermost ring of the base 3. The outer wall surface of the silicone rubber sheet 4 is provided with grooves 7, the grooves 7 on the silicone rubber sheet 4 are distributed in an array, and the projection angle between the groove on the right side of the silicone rubber sheet 4 and the rotation sensor 11 on the base 3 is θ , the θ angle can be directly measured.

Considering that the water flow stirred by the propeller will have a certain influence on the film sensor, by increasing the thickness of the silicone rubber sheet to 6-8mm, the excessive interference of the film sensor is reduced to within the allowable error range, and the constant internal pressure makes the silicone rubber sheet The thin film sensor spreads closer to the inner tube wall, and the measurement data is more accurate. Preferably, the silicone rubber sheets 4 are provided with four groups, and the four groups of the silicone rubber sheets 4 are symmetrically distributed. The circuit board 5 is electrically connected to the TF card storage module 501, the battery module 6, the thin film sensor 8, the motor 9 and the rotation sensor 11 through wires, respectively.

The inner diameter of the most commonly used residential water supply pipes in cities is about 60-70mm. Therefore, the diameter of the entire device is designed to be slightly smaller than the inner diameter of the pipeline in order to improve the detection accuracy. In actual production, the diameter of the device can be determined according to the specific inner diameter of the pipeline. At the same time, the accuracy of the thin film sensor can be freely selected according to the measurement requirements and cost acceptability in different pipeline environments. The entire device can adjust the propulsion method and battery life module according to the reading of the stored pressure data, optimize the working state under the premise of ensuring low energy consumption and light weight, improve the operating time, and give full play to the flexibility, simplicity and accuracy of the device. . At the same time, the internal space of the device can carry corresponding sensors and instruments according to various needs, and even include devices and instruments such as water pipe centerline positioning and orientation and microcontrollers, which are more applicable to the pipeline environment.

Working principle: The pressure change of the liquid inside the pipeline is detected and monitored by the film sensor. When the pipeline is intact, the pressure curve fitted by the sensor is a relatively stable horizontal line, but when the detection device passes near the leak, a certain suction force is generated due to the leak. If the original stress state of the sensor is changed, a peak will suddenly appear in the fitted pressure curve, thus inferring that there is a leak in the pipeline. The detection device travels at a constant speed in the pipeline. By reading the time when the pressure data peaks, the distance that the entire device advances, that is, the horizontal distance between the leak point and the pipeline port, can be calculated. The projection angle between the groove on the right side of the silicone rubber sheet and the rotation sensor on the base is θ, and the angle θ can be directly measured; add or subtract the angle θ according to the angle measured by the rotation sensor, subtract the integer multiple of 360°, and the remainder That is, the degree of the leak point relative to the device, and the measurement accuracy can be improved by adjusting the diameter of the device later. Finally, the location of the leak point is obtained according to the horizontal distance and relative angle.

The whole detection device integrates leak detection and positioning. By reading the data on the memory card later, the horizontal distance between the leak point and the pipeline port and the angle of the leak point relative to the pipeline can be obtained, so as to realize the location of the leakage position of the pipeline. Convenience, strong applicability, compact structure, good sealing effect, greatly saves the ineffective operation time of pipeline maintenance workers, and reduces the loss and waste of water resources in the process of pipeline transportation, saves costs and human resources, has high economic benefits, and has a good market. prospect.

It should be noted that the detection device for fluid leakage in the pipeline according to the present invention includes a body 1, a first card slot 101, a second card slot 102, a top cover 2, a first card post 201, a base 3, a first The two clamping posts 301, the silicone rubber sheet 4, the circuit board 5, the TF card storage module 501, the battery module 6, the groove 7, the film sensor 8, the motor 9, the propeller blade 10 and the rotation sensor 11 are all common standard parts or The structures and principles of the components known to those skilled in the art are all known to those skilled in the art through technical manuals or through conventional experimental methods. In addition, the above-mentioned electrical components are flexibly selected, installed and debugged by those skilled in the art, so as to ensure the normal operation of each device, and there are no excessive restrictions here.

A series of detailed descriptions listed above are only specific descriptions for the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalents made without departing from the technical spirit of the present invention The embodiments or changes should all be included within the protection scope of the present invention.

Claims (8)

1. a detection device for fluid leakage in a pipeline, characterized in that it comprises a fuselage (1), a top cover (2) and a base (3), and the top cover (2) is mounted on the upper part of the fuselage (1), The base (3) is mounted on the lower part of the fuselage (1); A circuit board (5) is installed on the upper end surface of the base (3), and the circuit board (5) is located in the inner cavity of the fuselage (1); the circuit board (5) is welded with a TF card storage module (501), a battery a module (6) and a rotation sensor (11); A motor (9) is installed on the lower end surface of the base (3), and a propeller blade (10) is connected to the output end of the motor (9); a silicone rubber sheet (4) is installed at the outer ring of the lower end surface of the base (3), A groove (7) is formed on the outer wall surface of the silicone rubber sheet (4), and a thin film sensor (8) is installed in the inner cavity of the groove (7). 2. The device for detecting fluid leakage in a pipeline according to claim 1, characterized in that, both sides of the top of the inner cavity of the fuselage (1) are provided with first card slots (101), and the fuselage (1) ) Both sides of the bottom of the inner cavity are provided with second clamping slots (102); both sides of the bottom of the outer wall surface of the top cover (2) are integrally formed with first clamping posts (201); the two side walls of the base (3) A second clamping column (301) is integrally formed on the top of the surface. 3 . The detection device for fluid leakage in a pipeline according to claim 2 , wherein the top cover ( 2 ) passes through the first clamping slot ( 101 ), the first clamping column ( 201 ) and the body ( 3 . 3 . 1) Connected; the base (3) is connected to the fuselage (1) through the second card slot (102) and the second card post (301); the fuselage (1) is connected to the top cover (2), the base ( 3) into a nested structure. 4. The device for detecting fluid leakage in a pipeline according to claim 2, wherein the outer diameter of the first clamping column (201) is the same as the inner diameter of the first clamping groove (101); The outer diameter of the second clamping column (301) is the same as the inner diameter of the second clamping slot (102). 5. The detection device for fluid leakage in a pipeline according to claim 1, wherein the motor (9) is installed at the bottom center of the base (3); the motor (9) and the silicone rubber sheet ( 4) The distance between the radial directions is larger than the diameter of the propeller blades (10). 6 . The device for detecting fluid leakage in a pipeline according to claim 1 , wherein the grooves ( 7 ) on the silicone rubber sheet ( 4 ) are distributed in an array, and the The projection angle between the groove on the right and the rotation sensor (11) on the base (3) is θ. 7 . The detection device for fluid leakage in a pipeline according to claim 1 , wherein the circuit board ( 5 ) is connected to the TF card storage module ( 501 ), the battery module ( 6 ), and the thin film sensor respectively through wires. 8 . (8), the motor (9) and the rotation sensor (11) are electrically connected. 8. The device for detecting fluid leakage in a pipeline according to claim 1, wherein the body (1) is made of soft rubber material; the top cover (2) and the base (3) Made of photosensitive resin material.

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