A power plant boiler pipeline leakage detection device based on acoustic shadow detection

Abstract

The application discloses a power plant boiler pipeline leakage detection device based on acoustic shadow detection, which comprises a rear disc and a connecting piece. A plurality of side-mounted cameras are arranged at the front end of the rear disc. The plurality of side-mounted cameras are distributed in a circumferential direction and have lenses facing the outside of the rear disc. At least three connecting pieces are connected to the circumferential surface of the rear disc. The end of the connecting piece away from the rear disc is fixedly installed with an axle bracket. The inside of the axle bracket is movably installed with a pulley through a rotating shaft. The pipeline leakage detection is carried out from the inside of the conveying pipeline and is not affected by external factors.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of power plant boilers, and relates to a power plant boiler pipeline leakage detection device based on acoustic shadow detection. BACKGROUND

[0002] During use of a power plant boiler, pipelines are needed to connect various devices, and a leakage detection device is generally arranged outside the pipelines to detect and confirm leakage points. However, the pipelines are arranged in a complex manner during installation, and a plurality of supports are arranged outside the pipelines, and the installation height is too high, so that detection is very cumbersome. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art, and provides a power plant boiler pipeline leakage detection device based on acoustic shadow detection, which detects pipeline leakage from the inside of the pipeline and is not affected by external factors.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] A power plant boiler pipeline leakage detection device based on acoustic shadow detection comprises a rear disc and a connecting piece.

[0006] A plurality of side-mounted cameras are arranged at the front end of the rear disc, and are distributed in a circumferential direction and have lenses facing the outside of the rear disc.

[0007] The rear disc is connected with at least three connecting pieces, and the connecting pieces are fixedly installed with shaft supports at the ends away from the rear disc, and the shaft supports are movably installed with pulleys in the interiors.

[0008] Preferably, a conical disc is fixedly installed at the front end of the rear disc, a flow guide cover is arranged at the center of the conical disc, the plurality of side-mounted cameras are distributed in a circumferential direction along the flow guide cover, and a front-mounted camera is arranged at the center of the flow guide cover.

[0009] Further, a tray is arranged between the conical disc and the flow guide cover, the tray is fixed to the conical disc, a motor is fixedly installed at the shaft center of the side of the conical disc facing the tray, and the output shaft end of the motor is connected with the center of the flow guide cover.

[0010] Further, a sliding groove is arranged at the outer ring of the tray, a plurality of guide wheels are movably installed in the sliding groove, and the ends of the plurality of guide wheels away from the sliding groove are fixedly connected with the flow guide cover.

[0011] Further, a plurality of flow guide grooves are arranged at the outer wall of the flow guide cover, and the plurality of flow guide grooves are all arc-shaped.

[0012] Preferably, the rear end of the rear disc is provided with an annular groove, a waterproof cover is mounted at the end of the annular groove, a linear stepper motor is fixedly installed inside the annular groove, the output shaft of the linear stepper motor faces the inside of the rear disc, and the end of the output shaft is provided with a conical stud, a plurality of springs are arranged between the outer wall of the rear disc and the annular groove, the plurality of springs are uniformly arranged in the rear disc in the circumferential direction, the number and position of the springs correspond to the connecting rods, the connecting rods pass through the springs and extend into the inside of the annular groove, one end of the spring is connected with the connecting rod, and the other end is connected with the rear disc, and the end of the connecting rod close to the stud is fixedly installed with a pressure head, and the end of the connecting rod away from the stud is connected with the connecting rod.

[0013] Further, a telescopic rod is arranged between the connecting rod and the connecting piece, a sleeve is nested on the outside of the telescopic rod, and the telescopic rod and the sleeve inner wall are in sliding connection, and the end of the sleeve is fixed on the outer wall of the rear disc.

[0014] Further, a waterproof ring is arranged on the outer wall of the rear disc, and the waterproof ring is movably connected with the telescopic rod.

[0015] Preferably, the outer part of the pulley is provided with an anti-skid layer.

[0016] Preferably, the inside of the side-mounted camera is provided with a waterproof microphone.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] By arranging a plurality of connecting pieces, the connecting pieces are connected with pulleys through shaft supports, so that the rear disc is arranged in the inside of the conveying pipeline, the pulleys are abutted on the inner wall of the conveying pipeline, and the rear disc moves in the inside of the conveying pipeline under the pushing of the water flow, and a plurality of side-mounted cameras are arranged for leakage detection of the inner wall of the conveying pipeline, so that the device is not affected by external factors.

[0019] Further, the flow guide cover can reduce the resistance of water and make the movement more convenient.

[0020] Further, by arranging a motor, the motor in the cone disc is started, and the output shaft of the motor drives the rotation of the flow guide cover after being started, and the rotation of the flow guide cover drives the rotation and shooting of the side-mounted camera, so that the device has no dead angle when shooting.

[0021] Further, by arranging a guide wheel, the flow guide cover can slide in the sliding groove synchronously when rotating through the guide wheel, so that the structural stability of the flow guide cover is improved.

[0022] Furthermore, by setting a linear stepper motor, the linear stepper motor inside the waterproof cover is activated during adjustment. After the linear stepper motor is activated, its output shaft will drive the column head inside the annular groove to rotate and penetrate deeper. After the column head penetrates into the annular groove, it will squeeze the pressure head in the annular groove. After the pressure head is squeezed, it will drive the connecting parts to move synchronously. In this way, the pulleys inside the shaft frame will adjust the spacing. This allows the distance of the pulleys to be adjusted to accommodate pipes with different inner diameters.

[0023] Furthermore, it is equipped with a loudspeaker, which allows for the simultaneous transmission of sound and audio data. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the rear end structure of the device of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the rear end of the device of the present invention;

[0026] Figure 3 This is a schematic diagram of the front end structure of the device of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the front end of the device of the present invention;

[0028] Figure 5 For the present invention Figure 1 An enlarged view of point A in the diagram;

[0029] Figure 6 For the present invention Figure 2 Enlarged diagram of point B in the diagram;

[0030] Figure 7 For the present invention Figure 4 An enlarged diagram of point C in the diagram.

[0031] The components are as follows: 1. Rear plate; 2. Mounting plate; 3. Waterproof cover; 4. Linear stepper motor; 5. Annular groove; 6. Column head; 7. Spring; 8. Connecting rod; 9. Pressure head; 10. Telescopic rod; 11. Connecting piece; 12. Shaft bracket; 13. Pulley; 14. Sleeve; 15. Conical plate; 16. Tray; 17. Motor; 18. Flow guide; 19. Side camera; 20. Front camera; 21. Sealing ring; 22. Flow guide groove; 23. Slide groove; 24. Guide wheel; 25. Wiring terminal. Detailed Implementation

[0032] Clearly, the embodiments described are only a part of the embodiments of the present application, rather than all the embodiments; based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0033] It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0035] As shown in Figure 1 , the power plant boiler pipeline leakage detection device based on wired acoustic shadow detection according to the present application comprises a rear disc 1, an annular groove 5 and a connecting piece 11.

[0036] As shown in Figure 1 and Figure 5 , a waterproof cover 3 is fixedly installed on the outer middle part of the rear end of the rear disc 1 through a mounting disc 2, and a linear stepping motor 4 is fixedly installed inside the waterproof cover 3.

[0037] As shown in Figure 2 and Figure 6 , the annular groove 5 is opened in the inner middle part of the rear disc 1, a stud 6 is fixedly installed at the inner end of the annular groove 5 of the output shaft of the linear stepping motor 4, the stud 6 is a conical structure, the center line is the axis of the linear stepping motor 4, four springs 7 are arranged between the outer wall of the rear disc 1 and the annular groove 5, the four springs 7 are evenly arranged in the rear disc 1 along the circumferential direction, a connecting rod 8 extends into the interior of the annular groove 5 through the springs 7, one end of the spring 7 is connected with the connecting rod 8, and the other end is connected with the rear disc 1, a pressure head 9 is fixedly installed at the end of the connecting rod 8 close to the stud 6, and an extension rod 10 is fixedly installed at the end of the connecting rod 8 away from the stud 6.

[0038] As shown in Figure 1As shown, the connecting piece 11 is fixedly connected to the telescopic rod 10 away from the connecting rod 8, the connecting piece 11 is fixedly installed with the shaft support 12 away from the telescopic rod 10, the shaft support 12 is movably installed with the pulley 13 in the inside, the rear disc 1 is fixedly installed with the sleeve 14 on the outside close to the four telescopic rods 10, the sleeve 14 is movably connected to the telescopic rod 10, the sleeve 14 end is fixed on the outer wall of the rear disc 1, by setting the linear stepper motor 4, the linear stepper motor 4 in the waterproof cover 3 is started when adjusting, the output shaft of the linear stepper motor 4 will drive the stud 6 in the annular groove 5 to be deepened after being started, the stud 6 will extrude the pressure head 9 in the annular groove 5 after being deepened in the annular groove 5, the pressure head 9 will drive the connecting rod 8 to push the telescopic rod 10 to move outward after being extruded, the telescopic rod 10 will drive the shaft support 12 to move synchronously through the connecting piece 11 after moving outward in the sleeve 14, so that the pulley 13 in the shaft support 12 will adjust the spacing, so that the distance of the pulley 13 can be adjusted to adapt to different inner diameters of the pipeline.

[0039] As shown, Figure 3 In the present application, the end of the rear disc 1 away from the linear stepper motor 4 is the front end, the front end is fixedly installed with the conical disc 15, the conical disc 15 seals the end of the annular groove 5 away from the waterproof cover 3, as shown, Figure 7 As shown, the conical disc 15 is fixedly installed with the tray 16 in the middle of the side away from the rear disc 1, the conical disc 15 is fixedly installed with the motor 17 at the shaft center close to the tray 16.

[0040] In the present application, the output shaft end of the motor 17 is fixedly installed with the flow guide cover 18, the outer wall of the flow guide cover 18 is fixedly installed with a plurality of side-mounted cameras 19, the plurality of side-mounted cameras 19 are evenly distributed along the circumferential direction of the flow guide cover 18, and the lenses are directed to the outside of the rear disc 1, the front-mounted camera 20 is fixedly installed in the middle of the flow guide cover 18, and the wiring end 25 is connected to the external connecting line by setting the side-mounted camera 19 and the front-mounted camera 20.

[0041] The device is placed inside the pipeline to be detected, the rear disc 1 is driven to move forward by the fluid inside the pipeline, the pulley 13 installed in the shaft support 12 on the outside of the rear disc 1 will slide synchronously along the inner wall of the pipeline when the rear disc 1 moves, the flow guide cover 18 is installed at the shaft center of the conical disc 15 on one side of the rear disc 1, the side-mounted camera 19 is installed on the outer wall of the flow guide cover 18, the front-mounted camera 20 is installed at the shaft center of the flow guide cover 18, the side-mounted camera 19 can detect whether there is damage on the inner wall of the pipeline, and the front-mounted camera 20 can detect the position in front of the device in real time.

[0042] By setting the motor 17, the motor 17 in the conical disc 15 is started, the output shaft of the motor 17 will drive the flow guide cover 18 to rotate after being started, the flow guide cover 18 will drive the side-mounted camera 19 to rotate and shoot after rotating, so that the device can shoot without dead angle.

[0043] The outer side of the rear disc 1 close to the pressure head 9 is fixedly provided with a sealing ring 21, and the middle part of the sealing ring 21 is movably connected with the pressure head 9, so that the sealing ring 21 can prevent water from entering the inside of the annular groove 5.

[0044] The outer wall of the fairing 18 is provided with a plurality of guide grooves 22, and the guide grooves 22 are arc-shaped, so that the guide grooves 22 can be used for convenient flow guiding.

[0045] The outer ring of the tray 16 is provided with a sliding groove 23, and the inside of the sliding groove 23 is movably provided with a plurality of guide wheels 24, and the end of the guide wheels 24 away from the sliding groove 23 is fixedly connected with the fairing 18, so that the fairing 18 can be synchronously slid in the sliding groove 23 through the guide wheels 24 when rotating, and the structural stability of the fairing 18 can be improved.

[0046] The end of the sleeve 14 away from the rear disc 1 is fixedly provided with a waterproof ring, and the middle part of the waterproof ring is movably connected with the telescopic rod 10, so that the waterproof ring can prevent water from entering the inside of the sleeve 14.

[0047] The inside of the side camera 19 and the front camera 20 is provided with a waterproof microphone, so that the side camera 19 and the front camera 20 can synchronously transmit influence data and sound data.

[0048] The waterproof cover 3 is provided with a wiring terminal 25 on the side away from the linear stepping motor 4, so that the wiring terminal 25 can be conveniently connected with external lines.

[0049] The outside of the pulley 13 is provided with an anti-skid layer, so that the anti-skid layer can prevent the pulley 13 from slipping when moving.

[0050] Working principle: when the device is used, the terminal 25 is connected to the external connecting line, and then the equipment is placed in the pipeline to be detected. The rear disc 1 is driven by the fluid in the pipeline to move forward. When the rear disc 1 moves, the pulley 13 installed in the outer shaft support 12 will slide along the inner wall of the pipeline synchronously. At this time, the conical disc 15 on one side of the rear disc 1 is provided with a fairing 18 at the shaft center, the outer wall of the fairing 18 is provided with a side camera 19, and the shaft center of the fairing 18 is provided with a front camera 20. Whether the inner wall of the pipeline is damaged can be detected through the side camera 19, and the position in front of the equipment can be detected in real time through the front camera 20. When it is necessary to drive the side camera 19 to rotate and shoot, the motor 17 in the conical disc 15 is started. After the motor 17 is started, the output shaft will drive the fairing 18 to rotate. When the fairing 18 rotates, the guide wheel 24 can slide in the sliding groove 23 synchronously, so that the structural stability of the fairing 18 can be improved. After the fairing 18 rotates, it will drive the side camera 19 to rotate and shoot. When adjusting, the linear stepper motor 4 in the waterproof cover 3 is started. After the linear stepper motor 4 is started, the output shaft will drive the stud 6 in the annular groove 5 to penetrate deeply. After the stud 6 penetrates deeply into the annular groove 5, the pressure head 9 of the annular groove 5 will be extruded. After the pressure head 9 is extruded, the connecting rod 8 will push the telescopic rod 10 to move outward. After the telescopic rod 10 moves outward in the sleeve 14, the connecting piece 11 will drive the shaft support 12 to move synchronously. In this way, the pulley 13 in the shaft support 12 can adjust the spacing. The side camera 19 and the front camera 20 are provided with a loudspeaker, so that the influence data and the sound data can be transmitted synchronously.

[0051] It should be noted that, in the present document, the terms such as first and second, etc. are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. In addition, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0052] It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the technology should be determined, not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated by reference for all purposes. The omission in the foregoing description of any aspect of the subject matter disclosed herein is not a disclaimer of such subject matter, nor should it be regarded that the applicant has disclaimed any such subject matter, nor should any such omission be regarded as affecting the scope of the claimed teaching.

Claims

1. A power plant boiler piping leakage detection device based on acoustic shadow detection, characterized by, The rear disc (1) and the connecting piece (11) are included. A plurality of side cameras (19) are arranged on the front end of the rear disc (1), and the plurality of side cameras (19) are uniformly distributed in the circumferential direction and have lenses facing the outside of the rear disc (1). At least three connecting pieces (11) are connected to the circumferential surface of the rear disc (1), and a shaft support (12) is fixedly installed at the end of the connecting piece (11) away from the rear disc (1), and a pulley (13) is movably installed in the shaft support (12). A conical disc (15) is fixedly installed on the front end of the rear disc (1), a flow guide cover (18) is arranged at the center of the conical disc (15), a plurality of side cameras (19) are arranged on the circumferential surface of the flow guide cover (18), and a front camera (20) is arranged at the center of the flow guide cover (18). An annular groove (5) is arranged at the rear end of the rear disc (1), a waterproof cover (3) is installed at the end of the annular groove (5), a linear stepping motor (4) is fixedly installed in the annular groove (5), the output shaft of the linear stepping motor (4) faces the inside of the rear disc (1), and the end of the output shaft is provided with a conical stud (6), a plurality of springs (7) are arranged between the outer wall of the rear disc (1) and the annular groove (5), the plurality of springs (7) are uniformly arranged in the rear disc (1) in the circumferential direction, the number and position of the springs (7) correspond to the connecting pieces (11), a connecting rod (8) penetrates through the springs (7) and extends into the inside of the annular groove (5), one end of the spring (7) is connected with the connecting rod (8), and the other end is connected with the rear disc (1), and a pressing head (9) is fixedly installed at the end of the connecting rod (8) close to the stud (6), and the end of the connecting rod (8) away from the stud (6) is connected with the connecting piece (11).

2. The acoustic shadow detection based power plant boiler piping leak detection apparatus as claimed in claim 1, wherein, A tray (16) is arranged between the conical disc (15) and the flow guide cover (18), the tray (16) is fixed with the conical disc (15), a motor (17) is fixedly installed at the shaft center of the side of the conical disc (15) facing the tray (16), and the output shaft end of the motor (17) is connected with the center of the flow guide cover (18).

3. The acoustic shadow detection based power plant boiler piping leak detection apparatus as claimed in claim 1, wherein, A sliding groove (23) is formed at the outer ring of the tray (16), a plurality of guide wheels (24) are movably installed in the sliding groove (23), and the ends of the plurality of guide wheels (24) away from the sliding groove (23) are fixedly connected with the flow guide cover (18).

4. The acoustic shadow detection based power plant boiler piping leak detection apparatus as claimed in claim 1, wherein, A plurality of flow guide grooves (22) are formed in the outer wall of the flow guide cover (18), and the plurality of flow guide grooves (22) are arc-shaped.

5. The acoustic shadow detection based power plant boiler piping leak detection apparatus as claimed in claim 1, wherein, A telescopic rod (10) is arranged between the connecting rod (8) and the connecting piece (11), a sleeve (14) is nested on the outside of the telescopic rod (10), the telescopic rod (10) is slidably connected with the inner wall of the sleeve (14), and the end of the sleeve (14) is fixed on the outer wall of the rear disc (1).

6. The power plant boiler piping leak detection apparatus based on acoustic shadow detection according to claim 5, characterized by, A waterproof ring is arranged on the outer wall of the rear disc (1), and the waterproof ring is movably connected with the telescopic rod (10).

7. The acoustic shadow detection based power plant boiler piping leak detection apparatus as claimed in claim 1, wherein, A non-slip layer is sleeved on the outside of the pulley (13).

8. The acoustic shadow detection based power plant boiler piping leak detection apparatus as claimed in claim 1, wherein, A waterproof microphone is arranged in the inside of the side camera (19).

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