CN221975043U - Pipeline leakage detection device - Google Patents

Abstract

A pipeline leakage detection device is used for detecting leakage of a pipeline system on an aircraft. The pipeline leakage detection device comprises: a detachable transparent leak detection container in the form of a half-mounted leak detection container having openings formed on both sides thereof, respectively, the openings allowing a pipe of a pipe system to extend therethrough, a portion of the pipe being contained in an inner space of the leak detection container and being fastened by both end buckles; at least one pressure sensor mounted on the leak detection vessel and protruding into the interior space of the leak detection vessel for detecting a pressure in the interior space; and a leakage monitoring panel mounted on the leakage detection container and including a signal display part capable of displaying a specific leakage amount; the leakage control module communicates with the pressure sensor to be able to receive the pressure value detected by the pressure sensor. The pipeline leakage detection device is simple in structure and can reliably and rapidly detect leakage points in the pipeline.

Description

Pipeline leakage detection device

Technical Field

The present application relates to the field of aircraft design, and in particular to a device for detecting whether a pipeline on a civil aircraft is leaking.

Background Art

Civil aircraft are equipped with a variety of pipelines, such as water and wastewater system pipelines. These pipelines operate under a certain working pressure and are required not to leak under this working pressure. Otherwise, if the pipeline leaks during operation, the leaked water will drip onto the electrical equipment of the aircraft, causing failure of the electrical equipment and posing a safety hazard. Therefore, after the pipelines on the aircraft are installed, these pipelines need to be leak tested.

However, the water and wastewater system pipes on an aircraft are generally installed in a triangular area under the aircraft cabin floor, surrounded by many other pipes. Therefore, the surrounding space is small, and the space left for pipe leak detection is also very small, which greatly limits the detection methods and tools.

Currently, to determine whether there are leaks in the pipelines installed on the aircraft, the only way is to detect whether the pipe joints between adjacent pipe sections are correctly connected and whether there are leaks.

In the existing technology, the leakage detection at the pipe joints of the water and wastewater system of civil aircraft is mainly detected by the soap bubble method. However, the soap bubble method has some limitations, especially if the leakage at the pipe joint is not obvious, soapy water cannot produce obvious bubbles. In addition, spraying soapy water on the aircraft pipes is prone to residue, and the residual soapy water will corrode the pipe joints, causing leaks in pipes that were originally leak-free.

Another method used in the prior art is the listening method. The problem with the listening method is that when the leakage is not obvious, the sound of the leakage is not obvious either. If it is heard by human ears, it is greatly affected by human factors. If a noise detector is used for detection, the environmental noise will also affect the accuracy of the detection.

Therefore, in the art, there is a need to improve a device for leak detection of pipelines on civil aircraft so as to detect the source of leakage on the pipelines simply, accurately and effectively.

Utility Model Content

The present application is made to solve the technical problems existing in the above-mentioned prior art. The purpose of the present application is to provide a pipeline leakage detection device for aircraft, which has a simple structure and can quickly and reliably detect leakage points on the pipeline.

The present application designs a pipeline leakage detection device, which is used for leak detection of the pipeline system on an aircraft. A detachable transparent leakage detection container is formed with openings on two facing sides of the leakage detection container, respectively, the opening allows the pipeline of the pipeline system to extend through, and a part of the pipeline is contained in the internal space of the leakage detection container; at least one pressure sensor, the pressure sensor is installed on the leakage detection container and extends into the internal space of the leakage detection container, and is used to detect the pressure in the internal space; and a leakage monitoring panel, the leakage monitoring panel is installed on the leakage detection container, and includes a signal display part, which is used to display the specific leakage amount; a leakage amount control module, which is arranged in the leakage monitoring panel and is connected to the pressure sensor so as to be able to receive the pressure value detected by the pressure sensor.

The pipeline leakage detection device has a simple structure, wherein by measuring the internal pressure value of the leakage detection container, it is possible to reliably and quickly determine whether there is a leak in the pipeline portion contained in the leakage detection container. Moreover, the pipeline leakage detection device does not need to apply agents such as soapy water to the pipeline, thereby avoiding corrosion of the pipeline. The pipeline portion contained in the leakage detection container may include, for example, a pipe joint and other parts that are prone to leakage. According to the pressure value detected by the received pressure sensor, it is possible to calculate and determine whether a leak occurs, and control processing is performed accordingly.

Preferably, the signal display unit includes a specific leakage amount display window to display the specific leakage amount.

Preferably, the leakage detection panel further comprises a signal input portion, which comprises a pipeline allowable leakage critical value input window for allowing an operator to input a pipeline allowable leakage critical value.

Here, the specific leakage amount display window and the pipeline allowable leakage critical value input window can be separately set windows or different operation parts in the same window.

Preferably, the leakage amount calculation and control module is configured to calculate the leakage amount at a portion of the pipeline contained in the leakage detection container based on the rate of change of the pressure value, and the leakage amount calculation and control module is connected to the leakage amount display window to send the leakage amount to the leakage amount display window, and the leakage amount calculation and control module is connected to the pipeline allowable leakage critical value input window.

The leakage control module can compare the pipeline leakage with the allowable leakage critical value, and control the operation of the leakage alarm indicator light based on the comparison structure.

Preferably, the pipeline leakage critical value input window is connected to the leakage control module, so that the pipeline leakage critical value in the pipeline system can be input into the leakage control module through the pipeline leakage critical value input window. The leakage control module can make various judgments, such as whether the leakage is within the allowable range, whether there are other leakage points in other parts of the pipeline system in addition to the leakage point in the pipeline part contained in the leakage detection container, etc. In this way, it can help improve the efficiency of leakage point detection.

Preferably, the pipeline leakage detection device further includes a leakage alarm indicator, the leakage control module is connected to the leakage alarm indicator, and can activate the leakage alarm indicator based on the comparison between the pipeline leakage threshold and the overall leakage in the pipeline system. The leakage alarm indicator provides an indication of the presence of leakage in the pipeline.

The leakage alarm indicator can take many forms, such as sound alarm, color light alarm, flashing light alarm, vibration alarm, etc.

In addition, the leakage monitoring panel may also include a power source, such as a battery, etc., for providing power to the pressure sensor, the leakage alarm indicator, etc.

Preferably, the leak detection container is made of a transparent material. For example, the leak detection container can be made of acrylic material or glass. The leak detection container made of a transparent material can facilitate the inspector to observe the appearance of the pipeline portion being inspected.

Preferably, the pipeline leakage detection device is a half-mounted structure, comprising two halves that can be fixedly mounted together by a detachable buckle. Such a half-structure can conveniently install the pipeline leakage detection device on the pipeline.

Preferably, a sealing structure is provided on the opening, and the sealing structure realizes a sealing fit between the pipeline and the edge of the opening.

An exemplary embodiment of the sealing structure is an inflatable sealing ring, which is provided with at least one inflation port. After the leak detection container is installed on the pipeline, the inflatable sealing ring is inflated through the inflation port to achieve a sealing fit between the opening of the leak detection container and the pipeline.

Preferably, two pressure sensors are included, which can verify the pressure measurement in the leak detection container with each other, thereby improving the pressure measurement accuracy.

Preferably, the length of the leakage detection container along the extending direction of the pipeline is 1.5 times the diameter of the pipeline.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings show non-limiting preferred implementation structures of the present utility model, and the features and advantages of the present utility model can be more clearly seen in conjunction with the accompanying drawings.

FIG. 1 is a perspective view of a pipeline leakage detection device of the present application.

FIG2 shows an exploded perspective view of the pipeline leakage detection device of the present application, wherein the leakage detection container is in halves, which can be assembled in halves by means of snaps located on the side.

FIG3 is a schematic diagram showing the principle of the pipeline leakage detection device of the present application performing leakage inspection on the pipeline.

(Explanation of symbols)

1 pipeline

2 Pipe joints

10Pipeline leakage detection device

11. Leak detection container

12 Opening

20 Leakage Monitoring Panel

21 Specific leakage amount display window

22 Pipeline leakage critical value input window

23. Leakage alarm indicator

24 batteries

25 Leakage Control Module

31 Pressure sensor

32 Inflatable seal ring

33 Inflatable port

34 buckles

DETAILED DESCRIPTION

The specific implementation methods of the present application will be described in detail below in conjunction with the accompanying drawings. It should be understood that what is shown in the accompanying drawings is only a preferred embodiment of the present application, which does not constitute a limitation on the scope of the present application. Those skilled in the art can make various obvious modifications, variations, and equivalent substitutions to the present application based on the embodiments shown in the accompanying drawings, and under the premise of no contradiction, the technical features in the different embodiments described below can be arbitrarily combined with each other, which all fall within the protection scope of the present application.

FIG1 is a three-dimensional view of a pipeline leakage detection device 10 of the present application, in which the structure of the pipeline leakage detection device 10 is schematically shown.

The pipeline leakage detection device 10 includes a leakage detection container 11, which has openings on two sides opposite to each other. One of the openings 12 is shown in FIG1, and the other opening is formed on the side facing the opening 12. When performing a leakage detection, the leakage detection container 11 can contain the part of the pipeline to be detected, such as the pipeline part or the pipe joint, and the pipeline can extend through the two openings 12 of the leakage detection container 11. FIG2 schematically shows the pipeline leakage detection device 10 installed on the pipeline 1 to be detected, wherein the leakage detection container 11 contains the pipe joint 2 in the pipeline 1, and the pipeline 1 extends from both sides of the leakage detection container 11.

Those skilled in the art will appreciate that the situation in which the opening 12 is formed on the opposite sides is applicable to a straight or substantially straight extending pipeline 1. Those skilled in the art will appreciate that, depending on the structural type of the pipeline 1, the opening 12 may also be formed in other ways, that is, the openings 12 may be formed on two adjacent surfaces of the leakage detection container 11, respectively, so as to accommodate the pipeline 1 with a bend in the leakage detection container 11.

A sealing structure is provided at the opening 12 to seal and isolate the internal space of the leakage detection container 11 from the external space. The sealing structure may be, for example, a sealing ring provided along the edge of the opening 12, preferably an inflatable sealing ring 32 as shown in the figure, and the inflatable sealing ring 32 is provided with at least one (two are shown in the figure) inflating port 33. After the leakage detection container 11 is installed on the pipeline 1, the inflatable sealing ring 32 is inflated through the inflating port 33, so that the inflatable sealing ring 32 expands to achieve a sealing fit with the pipeline 1.

In addition, the sealing structure may also be in other forms. For example, the sealing structure may be a common sealing ring whose inner diameter is set to be slightly smaller than the outer diameter of the pipeline 1, so that when the pipeline 1 passes through the opening 12, a sealing fit is formed between the pipeline 1 and the opening 12.

Preferably, the leak detection container 11 is a detachable container, specifically, it can be a half-mounted structure, that is, it includes two halves. During installation, the two halves of the leak detection container 11 are mounted on the pipeline 1 from both sides, and then the two halves are fixedly connected together by the buckles 34 arranged on the sides of the two halves, thereby forming a complete leak detection container 11 installed on the pipeline 1. As shown in FIG. 2 , two buckles 34 are respectively formed on the two opposite sides of the top plate 11, so that the leak detection container 11 includes four buckles 34. Of course, other numbers of buckles 34 can be provided as needed.

In addition, preferably, the leak detection container 11 is made of a transparent material, such as a transparent acrylic plate or glass. The leak detection container 11 made of a transparent material allows the inspector to see the inspected pipeline part, such as the situation at the pipe joint when performing a leak detection on the pipeline.

Preferably, the length of the leakage detection container 11 is preferably set to be greater than the diameter of the pipeline 1, more preferably 1.5 times the diameter of the pipeline 1. This length setting of the leakage detection container 11 helps to reliably install the leakage detection container 11 on the pipeline 1.

In the exemplary structure shown in the figure, the leakage detection container 11 is in the shape of a cube or a cuboid. In addition, depending on the specific position of the pipeline 1 to be detected in the aircraft, the leakage detection container 11 can also be in other shapes to adapt to the specific detection position.

At least one pressure sensor 31 is provided on the leak detection container 11, and the pressure sensor 31 can detect the pressure inside the leak detection container 11. If the change rate of the pressure value in the leak detection container 11 detected exceeds a predetermined range, it indicates that there is a leak in the pipeline part contained in the leak detection container 11. In the preferred structure shown in the figure, two pressure sensors 31 are included, and the two pressure sensors 31 can mutually verify the pressure value inside the leak detection container 11 measured, so that the detected pressure value can be more accurate.

The pipeline leakage detection device 10 also includes a leakage monitoring panel 20, which can be installed on the leakage detection container 11. A signal display unit is provided on the leakage monitoring panel 20, and the signal display unit can be used to display a specific leakage amount. A signal input unit is also provided on the leakage monitoring panel 20, and the signal input unit is used to input a critical value of leakage allowed by the pipeline. In the exemplary structure shown in the figure, the signal display unit includes a specific leakage amount display window 21, and the signal input unit includes a critical value input window 22 for leakage allowed by the pipeline. The leakage detection panel 20 may also include a leakage alarm indicator 23 and a battery 24. Among them, the battery 24 provides power for the pressure sensor 31 and the leakage alarm indicator 23. Among them, the specific leakage amount display window 21, the pipeline critical value input window 22 for leakage allowed by the pipeline, and the leakage alarm indicator 23 are shown in the figure as independent components. However, those skilled in the art will know that two, more or all of these components can be integrated into the same window.

The pipeline leakage detection device 10 further includes a leakage control module 25, which is preferably also powered by the battery 24. The leakage control module 25 is connected to the pressure sensor 31 and can receive the internal pressure of the leakage detection container 11 detected by the pressure sensor 31. Preferably, the leakage control module 25 is also configured to calculate the leakage at the location according to the change rate of the internal pressure of the leakage detection container 11. The leakage control module 25 is connected to the specific leakage display window 21 and can send the calculated leakage to the specific leakage display window 21.

The pipeline leakage critical value can be input through the pipeline leakage critical value input window 22, and the pipeline leakage critical value input window 22 is connected to the leakage control module 25, so as to receive the pipeline leakage critical value of the pipeline leakage critical value input window 22. The leakage control module 25 can compare the pipeline leakage critical value with the actual leakage of the pipeline. Here, the actual leakage of the pipeline can be detected by a pressure sensor set in the pipeline 1 and calculated by the leakage control module 25.

The leakage control module 25 is also connected to the leakage alarm indicator 23, and can control whether to open the leakage alarm indicator 23. Specifically, according to the comparison between the pipeline leakage critical value and the actual pipeline leakage, if the actual pipeline leakage is greater than the pipeline leakage critical value, the leakage control module 25 will control the leakage alarm indicator 23 to open and issue an alarm prompt of leakage at the pipe joint.

Here, the leakage alarm indicator 23 can adopt various forms, such as sound alarm, color light alarm, light flashing alarm, vibration alarm, etc.

In the exemplary structure shown in the figure, the leakage alarm indicator 23 is included on the leakage detection panel 20. However, those skilled in the art will appreciate that the leakage alarm indicator 23 may also be formed as a component independent of the leakage detection panel 20. Further, the leakage alarm indicator 23 is an optional component, and the operator may manually determine whether there is a leak based on the actual leakage amount of the pipeline.

In addition, the leakage control module 25 can also calculate the leakage of the entire pipeline based on the change rate of the test pressure value, and compare the leakage of the entire pipeline with the leakage of the pipeline part contained in the leakage detection container 11, such as the leakage at the pipe joint. According to the ratio of the leakage of the entire pipeline to the leakage of the pipeline part in the leakage detection container 11, it can be determined whether the leakage source of the entire pipeline system is at this pipe joint, or there are other leakage sources. In this way, the leakage detection of other parts of the pipeline system can be reduced, and the efficiency of leak point detection can be improved.

Furthermore, the leakage control module 25 can also determine whether the leakage of the entire pipeline system is within an acceptable range based on the leakage of the entire pipeline system and the critical value of the pipeline leakage allowed. If the leakage exceeds the preset critical value of the pipeline leakage allowed, the leakage control module 25 sends an instruction to the leakage alarm indicator 23 to turn on the leakage alarm indicator 23 to indicate that the pipeline 1 needs to be replaced or the pipe joint 2 needs to be reconnected.

Furthermore, the leakage control module 25 can be connected to the specific leakage display window 21, the pipeline leakage threshold input window 22, and the leakage alarm indicator 23 by wired or wireless means. The signal and electrical connections between them are schematically indicated by dotted lines in the figure.

The following will describe in detail the method of using the pipeline leakage detection device 10 of the present application.

First, the inspector can install the leakage detection container 11 of the pipeline leakage detection device 10 on a part of the pipeline system, for example, include the pipe joint 2 on the pipeline 1 in the leakage detection container 11. The orientation of the pipeline leakage detection device 10 can be adjusted so that the leakage monitoring panel 20 of the pipeline leakage detection device 10 faces upward, which is convenient for the inspector to check. After the leakage detection container 11 is installed, the inflatable sealing ring 32 is inflated through the inflation port 33 to achieve a seal between the opening 12 of the pipeline leakage detection device 10 and the pipeline 1, so as to avoid leakage of the leakage detection container 11 during the detection process.

Next, the pressurized gas is injected into the pipeline system. Thereafter, if there is a leak at the pipe joint 2 contained in the leak detection container 11, the pressurized gas will flow into the leak detection container 11, causing the pressure in the leak detection container 11 to increase. When the pressure in the leak detection container 11 increases to exceed a preset pressure threshold, the situation of exceeding the pressure threshold indicates the presence of a leak, and at this time the leak alarm indicator 23 can be turned on to issue an alarm prompt indicating the presence of a leak. Alternatively, the leakage control module 25 can calculate the leakage based on the change in pipeline pressure, and turn on the leakage alarm indicator 23 when the leakage exceeds the pipeline allowable leakage critical value input in the pipeline allowable leakage critical value input window 22.

Furthermore, the leakage control module 25 can also calculate the leakage in the entire pipeline system according to the change rate of the pipeline test pressure value, and calculate the leakage at the pipe joint 2 in the leakage detection container 11 based on the change rate of the pressure value in the leakage detection container 11, and then determine whether there are other leakage points in the pipeline system based on the leakage of the entire pipeline system and the leakage of the pipe joint 2 in the leakage detection container 11. In other words, if the leakage of the entire pipeline system and the leakage at the pipe joint 2 in the leakage detection container 11 are basically the same, it can be determined that there is basically no leakage at other locations in the pipeline system. In this way, the inspection of other locations in the pipeline system can be omitted, thereby reducing the number of inspections and improving the efficiency of leak point detection.

The above describes the preferred structure of the pipeline leakage detection device 10 for detecting leakage in the pipeline system of an aircraft. Those skilled in the art can make some obvious modifications and equivalent substitutions based on the disclosed structure, which are still within the scope of the present application.

Claims (13)

1. A pipeline leak detection apparatus for leak detection of a pipeline system on an aircraft, the pipeline leak detection apparatus comprising:

A leak detection container having openings formed on both sides thereof, respectively, the openings allowing a pipe of the pipe system to extend therethrough and containing a portion of the pipe in an inner space of the leak detection container;

At least one pressure sensor mounted on the leak detection vessel and projecting into the interior space of the leak detection vessel for detecting a pressure in the interior space;

A leak monitoring panel mounted on the leak detection container, the leak monitoring panel comprising a signal display portion, wherein a specific leak amount is displayed in the signal display portion; and

And the leakage quantity control module is arranged in the leakage monitoring panel and communicated with the pressure sensor so as to be capable of receiving the pressure value detected by the pressure sensor.

2. The line leak detection apparatus as defined in claim 1, wherein the signal display portion includes a specific leak amount display window.

3. The line leak detection apparatus of claim 2, wherein the leak detection panel further comprises a signal input comprising a line enable leak threshold input window.

4. The line leak detection apparatus of claim 3, wherein the leak control module is configured to calculate a leak at a portion of the line contained in the leak detection vessel based on a rate of change of the pressure value, and the leak control module is in communication with the leak display window to which the leak can be sent, the leak control module being further in communication with the line enable leak threshold input window.

5. The line leak detection apparatus as defined in claim 3 or 4, wherein the line allowable leak threshold input window communicates with the leak quantity control module such that a line allowable leak threshold in the line system can be input to the leak quantity control module through the line allowable leak threshold input window.

6. The line leak detection apparatus as defined in claim 5, further comprising a leak alert indicator, wherein the leak control module is in communication with the leak alert indicator and is capable of activating the leak alert indicator based on a comparison of a line leak in the leak detection vessel to an allowable leak threshold.

7. The line leak detection apparatus as defined in claim 1, wherein the leak detection vessel is made of a transparent material.

8. The line leak detection apparatus of claim 1, wherein the line leak detection apparatus is a half-mount structure comprising two halves that are removably and fixedly mounted together.

9. The line leak detection apparatus as defined in claim 8, wherein the two halves are fixedly mounted together by a snap fit.

10. A line leak detection apparatus as defined in claim 1, wherein a sealing structure is provided on the opening, the sealing structure effecting a sealing engagement between the line and an edge of the opening.

11. The line leak detection apparatus as defined in claim 10, wherein the sealing structure is an inflatable sealing ring, and wherein the inflatable sealing ring is provided with at least one inflation port.

12. The line leak detection apparatus as defined in claim 1, including two of said pressure sensors.

13. The line leak detection apparatus as defined in claim 1, wherein a length of the leak detection vessel in the line extending direction is 1.5 times a diameter of the line.