CN117434616A - Device and method for detecting foreign matters in pipeline - Google Patents

Abstract

The invention discloses a device and a method for detecting foreign matters in a pipeline, wherein the device for detecting the foreign matters in the pipeline comprises an air source, a pressure sensing unit and a receiving unit, wherein the air source is arranged at the inlet end of the pipeline and is used for introducing air flow into the pipeline, the pressure sensing unit is arranged at the outlet end of the pipeline, the pressure sensing surface of the pressure sensing unit is opposite to the outlet end, and the receiving unit is connected with the pressure sensing unit and receives pressure signals transmitted by the pressure sensing unit. According to the device for detecting the foreign matters in the pipeline, the pressure sensing surface and the outlet end are arranged opposite to each other, the air source is used for blowing air into the pipeline, the foreign matters in the pipeline are blown onto the pressure sensing unit along with the air flow, and after the foreign matters impact the pressure sensing unit, the pressure signals transmitted by the pressure sensing unit and received by the receiving unit are obviously changed, so that the foreign matters in the pipeline can be detected.

Description

Device and method for detecting foreign matters in pipeline

Technical Field

The invention relates to a device and a method for detecting foreign matters in a pipeline.

Background

In the whole engine development process, a large number of tests need to be carried out, in order to ensure safe and stable operation in the engine test process, a test vehicle table is designed with an auxiliary air supply system, and external air supply is provided for the engine in the test process. Auxiliary air supply systems generally use stainless steel air supply ducts of different diameters, multiple bends, and lengths typically exceeding 5 meters, and even up to 50 meters. The rotor runs at high speed during operation of the engine and any foreign matter ingress may have serious consequences for the engine. In the long-term use process of the test vehicle table, foreign matters are likely to enter the air supply pipeline, rust, bag lifting and the like in the pipeline are also difficult to avoid, gas passing through the air supply pipeline often directly flows into the engine, and the rust and the foreign matters serve as the foreign matters in the air supply pipeline and also enter the engine along with air flow. It is therefore necessary to inspect the air supply duct to avoid foreign matter in the air supply duct.

Because the air supply pipeline is longer in arrangement, generally has more bent angles, has the characteristics of concealing through walls and the like in arrangement, has various types of control valves on the air supply pipeline, cannot detect the conditions in the pipeline by visual observation, is difficult to judge whether foreign matters exist in the pipeline, and has related safety risks.

Disclosure of Invention

The invention aims to overcome the defect that whether foreign matters exist in a pipeline or not is difficult to judge in the prior art, and provides a device and a method for detecting the foreign matters in the pipeline.

The invention solves the technical problems by the following technical scheme:

the invention provides a foreign matter detection device in a pipeline, which comprises:

the air source is arranged at the inlet end of the pipeline and is used for introducing air flow into the pipeline;

the pressure sensing unit is arranged at the outlet end of the pipeline, and the pressure sensing surface of the pressure sensing unit is opposite to the outlet end;

and the receiving unit is connected with the pressure sensing unit and receives the pressure signal transmitted by the pressure sensing unit.

In this scheme, adopt above-mentioned structural style, pressure impression face and exit end set up relatively, blow to the pipeline inside through the air supply, the foreign matter in the pipeline blows to pressure impression unit together along with the air current, because the relative air current of foreign matter possesses bigger momentum, behind the impact pressure impression unit, the pressure signal that pressure impression unit transmission received by receiving unit has obvious change to can detect to have the foreign matter in the pipeline, easy operation, and conveniently carry.

Preferably, the receiving unit comprises an alarm arranged to receive a spike trigger of a waveform formed by the pressure signal, the alarm comprising a sound module and/or a display light module.

In the scheme, the pressure signal receiving unit adopts the structural form, when no foreign matter exists in the air flow, the waveform formed by the pressure signal received by the receiving unit is gentle, when the foreign matter is blown onto the pressure sensing surface along with the air flow, the pressure signal has obvious change, and the waveform is sharp, so that the abnormality is judged, and the alarm is triggered. After detecting the foreign matters, the alarm is triggered to remind the staff of the existence of the foreign matters in the air in the pipeline, the automation degree is high, and the staff can know the existence of the foreign matters in time, so that the next step of measures are formulated.

Preferably, the receiving unit comprises a memory for storing the pressure signal.

In this scheme, adopt above-mentioned structural style, through the automatic pressure signal that stores of memory to remain the testing result of pipeline, the follow-up staff of being convenient for knows whether there is the relevant information of foreign matter in the pipeline inside.

Preferably, the in-pipe foreign matter detection device comprises a containing unit, the containing unit is mounted at the outlet end and communicated with the outlet end, the containing unit is provided with a first side wall opposite to the outlet end, and the pressure sensing unit is arranged in the containing unit and opposite to the inner wall of the first side wall.

In this scheme, adopt above-mentioned structural style, install pressure sensing unit in holding the inside of unit, provide relatively stable installation, service environment for pressure sensing unit.

Preferably, the device for detecting foreign matters in a pipeline further comprises a switching pipe, wherein an inlet section of the switching pipe is connected with the pipeline, and an outlet section of the switching pipe is connected with the containing unit.

In this scheme, adopt above-mentioned structural style, realize the pipeline through the transfer pipe and hold the connection between the unit, the connection effect is stable.

Preferably, the inlet section is made of flexible material, and the outlet end is arranged in the inlet section.

In this scheme, adopt above-mentioned structural style, the entry section parcel of transfer pipe is in the outside of the exit end of pipeline, because the entry section adopts flexible material, its diameter is adjustable for the entry of transfer pipe is adapted to the pipeline of multiple bore, and the compatibility is strong, and implementation cost is lower and easy and simple to handle. In addition, the inlet section is made of flexible materials, and the transfer tube can be adjusted in multiple directions.

Preferably, the accommodating unit includes a second side wall connected to a side edge of the first side wall, so that an opening of the accommodating unit formed by enclosing the first side wall and the second side wall faces the pipeline, and a magnetic attraction piece is mounted on an inner wall of at least one second side wall.

In the scheme, the air flow in the pipeline is led into the accommodating unit, and the magnetic attraction piece on the inner wall of the accommodating unit collects magnetic foreign matters which are possibly generated by corrosion and blown out along with the air flow in the pipeline.

Preferably, the filter arranged at intervals with the second side wall is arranged inside the accommodating unit, one end of the filter away from the pipeline is in butt joint with the first side wall, the pressure sensing unit is arranged in the filter, and the filter is provided with a grid side wall which is opposite to the second side wall.

In the scheme, the structure is adopted, the grid side wall is adopted to classify the foreign matters, the foreign matters enter the filter along with the air flow, and when the size of the foreign matters is larger than the internal gap of the grid side wall, the foreign matters are directly collected; when the size of the foreign matter is smaller than the internal gap of the grid side wall, the foreign matter is decelerated by striking with the grid side wall.

Preferably, the device for detecting foreign matters in the pipeline comprises a filter communicated with the outlet end, the filter is provided with a first wall surface opposite to the outlet end, the pressure sensing unit is arranged in the filter and opposite to the first wall surface, the periphery of the first wall surface is connected with grid side walls, and the grid side walls extend from the side edges of the first wall surface to the direction close to the pipeline.

In the scheme, the structure is adopted, the foreign matters enter the filter along with the airflow, and when the size of the foreign matters is larger than the internal gap of the side wall of the grid, the foreign matters are directly collected.

The invention also provides a method for detecting the foreign matters in the pipeline, which adopts the device for detecting the foreign matters in the pipeline, and comprises the following steps:

s1, opening the air source to supply air to the pipeline;

s2, the receiving unit receives the pressure signal transmitted by the pressure sensing unit, judges whether foreign matters exist in the pipeline according to the received pressure signal, and judges that the foreign matters exist in the pipeline if sharp waves occur in a waveform formed by the pressure signal.

In this scheme, blow to the pipeline inside through the air supply, the foreign matter in the pipeline blows to the pressure sense unit together along with the air current, owing to the relative air current of foreign matter possesses bigger momentum, and behind the pressure sense unit was hit to the foreign matter, the pressure signal that the pressure sense unit received was transmitted has obvious change for the wave form that pressure signal formed appears sharp wave, thereby can detect to have the foreign matter in the pipeline, easy operation.

Preferably, the receiving unit includes an alarm, and the alarm is triggered if a spike appears in a waveform formed by the pressure signal.

In this scheme, detect the foreign matter after the foreign matter and remind staff pipeline interior air through triggering the alarm and have the foreign matter, degree of automation is high, and the staff can in time learn the existence of foreign matter to formulate next step measure.

The invention has the positive progress effects that:

according to the device for detecting the foreign matters in the pipeline, the pressure sensing surface and the outlet end are arranged opposite to each other, the air source is used for blowing air into the pipeline, the foreign matters in the pipeline are blown onto the pressure sensing unit along with the air flow, and after the foreign matters impact the pressure sensing unit, the pressure signals transmitted by the pressure sensing unit and received by the receiving unit are obviously changed, so that the foreign matters in the pipeline can be detected, the operation is simple, and the device is convenient to carry.

Drawings

Fig. 1 is a schematic structural diagram of a device for detecting foreign matters in a pipeline according to an embodiment of the invention.

Fig. 2 is a schematic structural diagram of a foreign matter detection device in a pipeline according to another embodiment of the invention.

FIG. 3 is a schematic diagram of a method for detecting foreign matters in a pipeline according to an embodiment of the invention.

Reference numerals illustrate:

air source 1

Pipeline 2

Inlet end 21

Outlet end 22

Pressure sensing unit 3

Receiving unit 4

Accommodation unit 5

First side wall 51

Second side wall 52

Transfer tube 6

Filter 7

Grid sidewall 71

First wall surface 72

Detailed Description

The invention is further illustrated by means of the following examples, which are not, however, intended to limit the scope of the invention.

As shown in fig. 1, an embodiment of the present invention provides a device for detecting foreign matters in a pipeline. The device for detecting the foreign matters in the pipeline comprises an air source 1, a pressure sensing unit 3 and a receiving unit 4, wherein the air source 1 is arranged at an inlet end 21 of the pipeline 2 and is used for introducing air flow into the pipeline 2, the pressure sensing unit 3 is arranged at an outlet end 22 of the pipeline 2, a pressure sensing surface of the pressure sensing unit 3 is opposite to the outlet end 22, and the receiving unit 4 is connected with the pressure sensing unit 3 and receives pressure signals transmitted by the pressure sensing unit 3. The pressure sensing surface is arranged opposite to the outlet end 22, the air source 1 blows air into the pipeline 2, and the foreign matters in the pipeline 2 are blown onto the pressure sensing unit 3 along with the air flow, so that the foreign matters have larger momentum relative to the air flow, and after the foreign matters strike the pressure sensing unit 3, the pressure signals transmitted by the pressure sensing unit 3 and received by the receiving unit 4 are obviously changed, so that the foreign matters in the pipeline 2 can be detected, the operation is simple, and the carrying is convenient. The air source 1 can provide test air with different pressure and flow according to site requirements.

The receiving unit 4 comprises an alarm which is arranged to trigger the occurrence of spikes in the waveform formed by the received pressure signal. When the air flow does not have foreign matters, the waveform formed by the pressure signal received by the receiving unit 4 is gentle, when the foreign matters are blown onto the pressure sensing surface together with the air flow, the pressure signal has obvious change, and the waveform has sharp waves, so that the abnormality is judged, and the alarm is triggered. After detecting the foreign matters, the alarm is triggered to remind the staff of the existence of the foreign matters in the air in the pipeline 2, the automation degree is high, and the staff can know the existence of the foreign matters in time, so that the next step of measures are formulated.

The alarm comprises a sound module, if the pressure sensing unit 3 receives the foreign matter impact signal, the alarm gives out sound to alarm in time, and the alarm gives out explicit alarm prompt through sound, so that the reminding effect is obvious. Or, the alarm comprises a display lamp module, and if the pressure sensing unit 3 receives the foreign body impact signal, the alarm performs dominant alarm prompt through lamplight, so that the reminding effect is obvious. Alternatively, the alarm includes a sound module and a display light module.

The receiving unit 4 comprises a memory for storing the pressure signal. The pressure signal is automatically stored through the memory, so that the detection result of the pipeline is reserved, and the follow-up staff can know whether the related information of the foreign matters exists in the pipeline or not conveniently.

Specifically, the foreign matter detection device in the pipeline can be adapted to different pipelines to detect whether the foreign matter exists in the different pipelines, and when the memory records and stores pressure signals, the pipeline names can be set to distinguish detection information of the different pipelines.

The in-pipe foreign matter detection device includes a housing unit 5, the housing unit 5 is mounted at the outlet end 22 and communicates with the outlet end 22, the housing unit 5 has a first side wall 51 opposite to the outlet end 22, and the pressure sensing unit 3 is disposed in the housing unit 5 and opposite to an inner wall of the first side wall 51. The pressure sensing unit 3 is installed inside the accommodating unit 5, and a relatively stable installation and use environment is provided for the pressure sensing unit 3. Preferably, the pressure sensing unit 3 is disposed close to the first sidewall 51.

The foreign matter detection device in the pipeline further comprises a switching pipe 6, an inlet section of the switching pipe 6 is connected with the pipeline 2, and an outlet section of the switching pipe 6 is connected with the containing unit 5. The connection between the pipe 2 and the receiving unit 5 is realized by the transfer pipe 6, and the connection effect is stable. Preferably, the inlet section is of a flexible material and the outlet end 22 is disposed within the inlet section. In other words, the inlet section of the adapter tube 6 is wrapped outside the outlet end 22 of the pipeline 2, and the diameter of the inlet section is adjustable due to the adoption of the flexible material, so that the inlet of the adapter tube 6 is suitable for pipelines 2 with various calibers, the compatibility is strong, the implementation cost is low, and the operation is simple and convenient. In addition, the inlet section is made of flexible materials, and the adapter tube 6 can be adjusted in multiple directions. As will be understood with reference to fig. 1, pipes 2 with different diameters may be installed between the air source 1 and the adapter pipe 6, and the different pipes 2 are detected when the foreign matter detection device in the pipe is used.

The accommodating unit 5 includes second side walls 52 connected to the sides of the first side walls 51 such that the opening of the accommodating unit 5 formed by the enclosing of the first side walls 51 and the second side walls 52 faces the pipe 2, and the inner wall of at least one second side wall 52 is mounted with a magnetic attraction member. The air flow in the pipeline 2 is led into the containing unit 5, and the magnetic attraction piece on the inner wall of the containing unit 5 collects the magnetic foreign matters which are possibly generated by rust and blown out along with the air flow in the pipeline 2. Specifically, the magnetic attraction piece adopts a permanent magnet.

In this embodiment, the filter 7 is disposed in the accommodating unit 5 at a distance from the second side wall 52, one end of the filter 7 away from the pipe 2 is disposed in contact with the first side wall 51, the pressure sensing unit 3 is disposed in the filter 7, and the filter 7 has a mesh side wall 71 disposed opposite to the second side wall 52. Classifying the foreign matters by using the grid side walls 71, enabling the foreign matters to enter the filter 7 along with the air flow, and directly collecting the foreign matters when the size of the foreign matters is larger than the internal gaps of the grid side walls 71; when the size of the foreign matter is smaller than the internal gap of the mesh side wall 71, the foreign matter is decelerated by the impact with the mesh side wall 71, and if the foreign matter is a magnetically foreign matter such as scrap iron, the foreign matter flows out of the filter 7 through the mesh side wall 71 with the air flow and is adsorbed by the magnetic attraction member of the inner wall of the second side wall 52. Specifically, the mesh side wall 71 employs a mesh steel wire mesh. The flow direction of the air flow is shown by the arrows-containing arcs in fig. 1, and the air flow blown out from the duct 2 passes into the interior of the filter 7 and out from the gaps between the mesh side walls 71 and the second wall surface 52 of the filter 7.

In another embodiment, as shown in fig. 2, the in-pipe foreign matter detection device is not provided with a magnetic attraction member inside, the in-pipe foreign matter detection device includes a filter 7 communicated with the outlet end 22, the filter 7 has a first wall surface 72 opposite to the outlet end 22, the pressure sensing unit 3 is arranged inside the filter 7 and opposite to the first wall surface 72, the grid side walls 71 are connected to the peripheral sides of the first wall surface 72, and the grid side walls 71 extend from the side edges of the first wall surface 72 to the direction approaching the pipe 2. The foreign matter enters the filter 7 with the air flow, and is directly collected when the size of the foreign matter is larger than the inner gap of the mesh side wall 71.

As shown in fig. 3, the embodiment of the present invention further provides a method for detecting a foreign object in a pipeline, where the method for detecting a foreign object in a pipeline using the device for detecting a foreign object in a pipeline according to any one of the embodiments of the present invention includes the following steps:

s1, opening an air source 1 to supply air to a pipeline 2;

s2, the receiving unit 4 receives the pressure signal transmitted by the pressure sensing unit 3, judges whether foreign matters exist in the pipeline 2 according to the received pressure signal, and judges that the foreign matters exist in the pipeline 2 if the waveform formed by the pressure signal has sharp waves.

Through air supply 1 to the inside blowing of pipeline 2, the foreign matter in the pipeline 2 blows to pressure impression unit 3 together along with the air current, owing to the relative air current of foreign matter possesses bigger momentum, and behind the foreign matter impacted pressure impression unit 3, the pressure signal that pressure impression unit 3 received by receiving unit 4 transmitted has obvious change for the wave form that pressure signal formed appears sharp wave, thereby can detect that there is the foreign matter in the pipeline 2, easy operation.

The receiving unit 4 comprises an alarm which is triggered if the waveform formed by the pressure signal has spikes. After detecting the foreign matters, the alarm is triggered to remind the staff of the existence of the foreign matters in the air in the pipeline 2, the automation degree is high, and the staff can know the existence of the foreign matters in time, so that the next step of measures are formulated.

When the pipeline inspection device is specifically used, the name of the current inspection pipeline is set in the memory, the air source 1 supplies air to the pipeline 2 according to the air supply pressure required by the test, and if the alarm does not receive an alarm, the blown air does not contain foreign matters, and the next pipeline inspection is performed. If the alarm gives an alarm, it indicates that foreign matter exists, the air supply is stopped, and the foreign matter received in the accommodation unit 5 is checked.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims (11)

1. An in-pipe foreign matter detection device, characterized in that the in-pipe foreign matter detection device includes:

the air source is arranged at the inlet end of the pipeline and is used for introducing air flow into the pipeline;

the pressure sensing unit is arranged at the outlet end of the pipeline, and the pressure sensing surface of the pressure sensing unit is opposite to the outlet end;

and the receiving unit is connected with the pressure sensing unit and receives the pressure signal transmitted by the pressure sensing unit.

2. An in-line foreign object detection apparatus according to claim 1, wherein the receiving unit comprises an alarm arranged to receive a spike trigger of a waveform formed by the pressure signal, the alarm comprising an acoustic module and/or a display light module.

3. The in-pipe foreign matter detection device of claim 1, wherein the receiving unit includes a memory for storing the pressure signal.

4. The in-pipe foreign matter detection device of claim 1, including a housing unit mounted to and communicating with the outlet end, the housing unit having a first side wall opposite the outlet end, the pressure sensing unit being disposed in the housing unit and disposed opposite an inner wall of the first side wall.

5. The in-pipe foreign matter detection device of claim 4, further comprising a transfer tube, an inlet section of the transfer tube being connected to the pipe, an outlet section of the transfer tube being connected to the accommodation unit.

6. The in-pipe foreign object detection device of claim 5, wherein the inlet section is made of a flexible material, and the outlet end is built into the inlet section.

7. The in-pipe foreign matter detection device of claim 4, wherein the housing unit includes a second side wall connected to a side edge of the first side wall such that an opening of the housing unit formed by surrounding the first side wall and the second side wall faces the pipe, and a magnetic attraction member is mounted to an inner wall of at least one of the second side walls.

8. The apparatus according to claim 7, wherein a filter is provided in the housing unit at an interval from the second side wall, an end of the filter away from the pipe is provided in abutment with the first side wall, the pressure sensing unit is provided in the filter, and the filter has a mesh side wall provided opposite to the second side wall.

9. The in-pipe foreign matter detection device according to claim 1, wherein the in-pipe foreign matter detection device includes a filter that communicates with the outlet end, the filter having a first wall surface opposite to the outlet end, the pressure sensing unit being built in the filter and disposed opposite to the first wall surface, mesh side walls being connected to peripheral sides of the first wall surface, the mesh side walls extending from side edges of the first wall surface in a direction approaching the pipe.

10. An in-pipe foreign matter detection method, characterized in that the in-pipe foreign matter detection device according to any one of claims 1 to 9 is employed for foreign matter detection, the in-pipe foreign matter detection method comprising the steps of:

s1, opening the air source to supply air to the pipeline;

s2, the receiving unit receives the pressure signal transmitted by the pressure sensing unit, judges whether foreign matters exist in the pipeline according to the received pressure signal, and judges that the foreign matters exist in the pipeline if sharp waves occur in a waveform formed by the pressure signal.

11. The method of detecting foreign matter in a pipeline according to claim 10, wherein the receiving unit includes an alarm, and the alarm is triggered if a spike occurs in a waveform formed by the pressure signal.