Device for detecting cracks on inner surface of fuel gas conveying pipeline

Abstract

The utility model is suitable for the technical field of pipeline inner surface crack detection, and provides a gas conveying pipeline inner surface crack detection device, which comprises a walking module, the rotating seat is mounted at the front end of the walking module; the mounting table is rotationally arranged on the rotating seat, and the front side of the mounting table is provided with an inclined surface which is inclined upwards; the camera module is mounted on the inclined surface; the air injection cleaning module comprises an air supply mechanism, a piston shell and a one-way air outlet pipe assembly, the one-way air outlet pipe assembly is installed at the front end of the piston shell, an opening of the one-way air outlet pipe assembly faces the camera module, and the air supply mechanism is used for supplying air to the one-way air outlet pipe assembly; the pipeline internal crack detection device has a good pipeline internal crack detection effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline inner surface crack detection, in particular to a gas transmission pipeline inner surface crack detection device. Background Art

[0002] During the use of gas pipelines, they are subjected to the combined effects of internal and external media for a long time, and mechanical cracks and corrosion points (pits or holes) will appear on the pipe walls, which will damage the surface integrity of the pipeline body, may bring unsafe hidden dangers caused by pipeline leakage, cause environmental pollution, and gradually "weaken" the pipeline function and enter a period of frequent accidents.

[0003] In the existing technology, internal inspection of pipelines is very difficult. It is a huge project to use traditional methods to conduct internal inspection of underground pipelines. Traditional inspection methods include magnetic particle inspection, eddy current inspection, etc. Traditional inspection methods are inefficient and have low detection accuracy, and cannot evaluate the degree of harm of pipeline defects.

[0004] Therefore, how to provide a gas transmission pipeline inner surface crack detection device is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The utility model aims to provide a gas transmission pipeline inner surface crack detection device, aiming to solve the problems mentioned in the background technology.

[0006] The utility model is implemented as follows: a gas transmission pipeline inner surface crack detection device, comprising:

[0007] Walking module;

[0008] A rotating seat, the rotating seat is installed at the front end of the walking module;

[0009] A mounting platform, the mounting platform is rotatably arranged on a rotating seat, and a front side of the mounting platform is provided with an inclined surface inclined upward;

[0010] A camera module, wherein the camera module is installed on the inclined plane;

[0011] A jet cleaning module, the jet cleaning module includes an air supply mechanism, a piston shell and a one-way air outlet pipe assembly, the one-way air outlet pipe assembly is installed at the front end of the piston shell, the one-way air outlet pipe assembly opens toward the camera module, and the air supply mechanism is used to supply air to the one-way air outlet pipe assembly.

[0012] Preferably, the air supply mechanism comprises:

[0013] A piston plate, the piston plate slides in a sealed manner with the inner wall of the piston shell, and the piston plate divides the piston shell cavity into an air injection cavity and an air supplement cavity;

[0014] A second positioning block, the second positioning block is fixed to a side of the piston plate away from the one-way air outlet pipe assembly;

[0015] A one-way air intake pipe assembly, wherein the one-way air intake pipe assembly is fixedly connected to the piston housing;

[0016] A one-way connecting pipe assembly, wherein the one-way connecting pipe assembly is arranged on the piston plate;

[0017] A second elastic member, two ends of which are respectively fixedly connected to one side of the piston plate close to the one-way air outlet pipe assembly and the inner wall of the piston shell;

[0018] The piston plate is connected to a driving mechanism which intermittently drives the piston plate to move toward the second positioning block.

[0019] Preferably, the driving mechanism comprises:

[0020] A second rotating shaft, the second rotating shaft is rotatably connected to the piston housing, and the second rotating shaft is connected to a power assembly driving the second rotating shaft to rotate;

[0021] a third rotating shaft, the third rotating shaft being coaxially fixed with the second rotating shaft;

[0022] A winding wheel, the winding wheel is mounted on the third rotating shaft through a clamping assembly;

[0023] A winding rope, one end of which is wound around the winding wheel, and the other end of which is fixedly connected to the piston plate.

[0024] Preferably, the clamping assembly includes a clamping slider and a third elastic member, the third elastic member is slidably arranged in the winding wheel, one end of the third elastic member is arc-shaped and partially nested in the third rotating shaft, and the two ends of the clamping slider are respectively fixedly connected to the bottom of the third elastic member and the inner wall of the winding wheel.

[0025] Preferably, the walking module comprises:

[0026] Main body driving mechanism;

[0027] A running wheel assembly, wherein the running wheel assembly is provided in a plurality of groups and is distributed axially along the main driving mechanism;

[0028] An elastic support assembly, which is arranged on the main driving mechanism and is used to elastically support the walking wheel assembly;

[0029] The main body driving mechanism is used to drive the running wheel assembly to operate.

[0030] Preferably, the main body driving mechanism comprises:

[0031] Installation box;

[0032] A driving shaft, the driving shaft is rotatably arranged at the axis center of the installation box, and the driving shaft is connected to a driving motor that drives the driving shaft to rotate;

[0033] A driven telescopic rod, one end of which is connected to the drive shaft via a first gear pair, and the other end of which extends outside the installation box and is connected to the travel wheel assembly via a second gear pair;

[0034] The driven telescopic rod is rotatably connected to the installation box.

[0035] Preferably, the drive shaft extends to the rotating seat and is fixedly connected to the mounting platform, and the drive shaft is rotatably connected to the rotating seat.

[0036] Preferably, the power assembly includes a third gear pair, and the third gear pair is respectively connected to the driving shaft and the second rotating shaft located in the rotating seat, and the second rotating shaft is rotatably connected to the rotating seat.

[0037] Preferably, the walking wheel assembly comprises:

[0038] A mounting frame, the mounting frame is connected to the elastic support assembly, and the mounting frame is rotationally connected to the driven telescopic rod;

[0039] A first rotating shaft, the first rotating shaft is rotatably connected to the mounting frame, and the first rotating shaft is connected to the third gear pair;

[0040] A rubber wheel is mounted on the first rotating shaft.

[0041] Preferably, the elastic support assembly comprises:

[0042] A guide seat, the guide seat is rotatably arranged on the installation box;

[0043] A slide bar, the slide bar being slidably connected to the guide seat;

[0044] A first positioning block, the first positioning block is fixed to one end of the slide bar located in the installation box;

[0045] The first elastic member, the piston shell is sleeved on the slide rod and is located between the guide seat and the walking wheel assembly.

[0046] Compared with the prior art, the beneficial effects of the utility model are as follows: by setting a rotating seat, a mounting platform, a camera module, a walking module and a jet cleaning module, when in use, the walking module drives the entire device to move, and during the movement, the rotating seat drives the mounting platform to rotate, and the mounting platform drives the camera module to rotate. Due to the setting of the inclined surface, the viewing angle of the camera module is diffuse emission, which can effectively collect internal image information of the underground gas pipeline and send it to the terminal for judgment. In addition, in order to better ensure the effective collection of images, the air supply mechanism in the jet cleaning module supplies air to the piston shell, and the gas is ejected from the one-way air outlet pipe assembly, thereby intermittently cleaning the mirror of the camera module to keep the image collection efficient and clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0048] Figure 1 A schematic structural diagram of a gas transmission pipeline inner surface crack detection device provided in an embodiment of the utility model.

[0049] Figure 2 A schematic structural diagram of an air jet cleaning module in a gas transmission pipeline inner surface crack detection device provided in an embodiment of the utility model.

[0050] In the accompanying drawings: 1-rotating seat; 2-mounting table; 3-camera module; 4-mounting box; 5-driving shaft; 6-driven telescopic rod; 7-first gear pair; 8-mounting frame; 9-first rotating shaft; 10-rubber wheel; 11-guide seat; 12-sliding rod; 13-first positioning block; 14-first elastic member; 15-piston shell; 16-piston plate; 17-second positioning block; 18-one-way air inlet pipe assembly; 19-one-way connecting pipe assembly; 20-second elastic member; 21-one-way air outlet pipe assembly; 22-second rotating shaft; 23-third rotating shaft; 24-winding wheel; 25-winding rope; 26-clamping slider; 27-third elastic member; 100-jet cleaning module; 200-driving mechanism; 300-main driving mechanism; 400-walking wheel assembly; 500-elastic support assembly. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0052] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0053] like Figure 1 , Figure 2 FIG. 1 is a schematic diagram of a gas transmission pipeline inner surface crack detection device provided by an embodiment of the utility model, comprising:

[0054] Walking module;

[0055] A rotating seat 1, wherein the rotating seat 1 is installed at the front end of the walking module;

[0056] A mounting platform 2, the mounting platform 2 is rotatably disposed on the rotating seat 1, and a slope inclined upward is disposed on the front side of the mounting platform 2;

[0057] A camera module 3, wherein the camera module 3 is installed on the inclined plane;

[0058] The jet cleaning module 100 includes an air supply mechanism, a piston shell 15 and a one-way air outlet pipe assembly 21. The one-way air outlet pipe assembly 21 is installed at the front end of the piston shell 15. The one-way air outlet pipe assembly 21 opens toward the camera module 3. The air supply mechanism is used to supply air to the one-way air outlet pipe assembly 21.

[0059] In the embodiment of the utility model, when in use, the whole device is moved by the walking module. During the movement, the mounting platform 2 is driven to rotate by the rotating seat 1, and the mounting platform 2 drives the camera module 3 to rotate. Due to the setting of the inclined surface, the viewing angle of the camera module 3 is diffuse emission, which can effectively collect internal image information of the underground gas pipeline and send it to the terminal for judgment. In addition, in order to better ensure the effective collection of images, the air supply mechanism in the jet cleaning module 100 supplies air to the piston shell 15, and the gas is ejected from the one-way air outlet pipe assembly 21, so as to intermittently clean the mirror of the camera module 3 to keep the image collection efficient and clear.

[0060] In one case of this embodiment, the image information analysis and judgment technology is technically dangerous and will not be described in detail.

[0061] like Figure 2 As shown, as a preferred embodiment of the utility model, the air supply mechanism includes:

[0062] A piston plate 16, wherein the piston plate 16 slides in a sealed manner with the inner wall of the piston housing 15, and the piston plate 16 divides the cavity of the piston housing 15 into an air injection cavity and an air supply cavity;

[0063] A second positioning block 17, wherein the second positioning block 17 is fixed to a side of the piston plate 16 away from the one-way air outlet pipe assembly 21;

[0064] A one-way air intake pipe assembly 18, wherein the one-way air intake pipe assembly 18 is fixedly connected to the piston housing 15;

[0065] A one-way connecting pipe assembly 19, wherein the one-way connecting pipe assembly 19 is disposed on the piston plate 16;

[0066] A second elastic member 20, two ends of which are respectively fixedly connected to one side of the piston plate 16 close to the one-way air outlet pipe assembly 21 and the inner wall of the piston housing 15;

[0067] The piston plate 16 is connected to a driving mechanism 200 that intermittently drives the piston plate 16 to move toward the second positioning block 17 .

[0068] In the embodiment of the utility model, when in use, the driving mechanism 200 intermittently drives the piston plate 16 to move toward the second positioning block 17, and the piston plate 16 pulls the second elastic member 20 to expand and contract. At this time, the jet chamber generates negative pressure, so that the air in the air replenishing chamber enters the jet chamber from the one-way connecting pipe assembly 19 until the piston plate 16 moves to the second positioning block 17. At this time, the piston plate 16 cannot move, and the driving mechanism 200 releases the control of the piston plate 16. Under the pulling force of the second elastic member 20, the piston plate 16 is driven to reset, and a positive pressure is generated in the jet chamber, so that the gas in the jet chamber is ejected from the one-way air outlet pipe assembly 21 to clean the camera module 3. At the same time, the air replenishing chamber is supplemented with external gas through the one-way air inlet pipe assembly 18.

[0069] like Figure 2 As shown, as another preferred embodiment of the utility model, the driving mechanism 200 includes:

[0070] A second rotating shaft 22, the second rotating shaft 22 is rotatably connected to the piston housing 15, and the second rotating shaft 22 is connected to a power assembly driving the second rotating shaft 22 to rotate;

[0071] A third rotating shaft 23, wherein the third rotating shaft 23 is coaxially fixed with the second rotating shaft 22;

[0072] A winding wheel 24, wherein the winding wheel 24 is mounted on the third rotating shaft 23 through a clamping assembly;

[0073] A winding rope 25 , one end of which is wound around the winding wheel 24 , and the other end of which is fixedly connected to the piston plate 16 .

[0074] In the embodiment of the utility model, when in use, the second rotating shaft 22 is driven to rotate by the power component, the second rotating shaft 22 drives the third rotating shaft 23 to rotate, the third rotating shaft 23 drives the winding wheel 24 to rotate, the winding wheel 24 winds the winding rope 25, and the winding rope 25 pulls the piston plate 16 to move. When the piston plate 16 moves to the second positioning block 17, the piston plate 16 cannot move. At this time, under the squeezing of the third rotating shaft 23, the clamping assembly is disengaged from the third rotating shaft 23, and the winding wheel 24 is in a free rotation state, which makes it convenient for the second elastic member 20 to pull the piston plate 16 to reset.

[0075] In one case of the present embodiment, the clamping assembly includes a clamping slider 26 and a third elastic member 27, the third elastic member 27 is slidably disposed in the winding wheel 24, one end of the third elastic member 27 is arc-shaped and partially nested in the third rotating shaft 23, and the two ends of the clamping slider 26 are respectively fixedly connected to the bottom of the third elastic member 27 and the inner wall of the winding wheel 24. When in use, after the winding wheel 24 cannot rotate, the third rotating shaft 23 squeezes the clamping slider 26, so that the clamping slider 26 retracts into the winding wheel 24 until it is re-matched with it, thereby driving the third rotating shaft 23 to rotate.

[0076] like Figure 1 As shown, as another preferred embodiment of the utility model, the walking module includes:

[0077] Main body driving mechanism 300;

[0078] A running wheel assembly 400, wherein the running wheel assembly 400 is provided in a plurality of groups and is axially distributed along the main driving mechanism 300;

[0079] An elastic support assembly 500, which is disposed on the main driving mechanism 300 and is used to elastically support the walking wheel assembly 400;

[0080] The main driving mechanism 300 is used to drive the running wheel assembly 400 to operate.

[0081] In the embodiment of the utility model, when in use, the elastic force of the elastic support assembly 500 drives the travel wheel assembly 400 to move, thereby fitting against the inner wall of the underground gas pipeline. This facilitates the movement along the inside of the pipeline by utilizing friction resistance during the operation of the travel wheel assembly 400 driven by the main driving mechanism 300, and is suitable for underground gas pipelines of different specifications.

[0082] like Figure 1 As shown, as another preferred embodiment of the utility model, the main body driving mechanism 300 includes:

[0083] Installation box 4;

[0084] A driving shaft 5, the driving shaft 5 is rotatably arranged at the axis center of the installation box 4, and the driving shaft 5 is connected to a driving motor for driving the driving shaft 5 to rotate;

[0085] A driven telescopic rod 6, one end of which is connected to the driving shaft 5 via a first gear pair 7, and the other end of which extends outside the mounting box 4 and is connected to the traveling wheel assembly 400 via a second gear pair;

[0086] The driven telescopic rod 6 is rotatably connected to the installation box 4 .

[0087] In the embodiment of the utility model, when in use, the driving motor drives the driving shaft 5 to rotate, and the driving shaft 5 drives the driven telescopic rod 6 to rotate through the first gear pair 7. The telescopic characteristics of the driven telescopic rod 6 are connected to the walking wheel assembly 400 and are driven to run through the second gear pair.

[0088] In one case of this embodiment, the drive shaft 5 extends to the rotating seat 1 and is fixedly connected to the mounting table 2. The drive shaft 5 is rotatably connected to the rotating seat 1. This arrangement reduces the layout of components and improves utilization. This arrangement allows the mounting table 2 and the camera module 3 to rotate synchronously when the walking mechanism is running, so that images are collected and linkage is achieved.

[0089] In one case of this embodiment, the power assembly includes a third gear pair, and the third gear pair is respectively connected to the drive shaft 5 and the second rotating shaft 22 located in the rotating base 1. The second rotating shaft 22 is rotatably connected to the rotating base 1. Through this arrangement, when the walking mechanism is running, the camera module 3 is cleaned synchronously to achieve linkage.

[0090] like Figure 1 As shown, as another preferred embodiment of the utility model, the walking wheel assembly 400 includes:

[0091] A mounting frame 8, wherein the mounting frame 8 is connected to the elastic support assembly 500, and the mounting frame 8 is rotatably connected to the driven telescopic rod 6;

[0092] A first rotating shaft 9, wherein the first rotating shaft 9 is rotatably connected to the mounting frame 8, and the first rotating shaft 9 is connected to the third gear pair;

[0093] The rubber wheel 10 is mounted on the first rotating shaft 9 .

[0094] In the embodiment of the utility model, when in use, the mounting bracket 8 is rotationally connected to the driven telescopic rod 6, so that when it is driven to extend and retract by the elastic support assembly 500, the driven telescopic rod 6 is driven to extend and retract, and power transmission is achieved by maintaining the driven telescopic rod 6 through the third gear pair.

[0095] like Figure 1 As shown, as another preferred embodiment of the present utility model, the elastic support assembly 500 includes:

[0096] A guide seat 11, wherein the guide seat 11 is rotatably disposed on the installation box 4;

[0097] A slide bar 12, wherein the slide bar 12 is slidably connected to the guide seat 11;

[0098] A first positioning block 13, wherein the first positioning block 13 is fixed to one end of the slide bar 12 located in the installation box 4;

[0099] The first elastic member 14 and the piston housing 15 are sleeved on the slide rod 12 and are located between the guide seat 11 and the walking wheel assembly 400 .

[0100] In the embodiment of the utility model, when in use, the elastic force of the first elastic member 14 drives the travel wheel assembly 400 to move, and the travel wheel assembly 400 drives the slide bar 12 and the first positioning block 13 to slide, thereby guiding and elastically supporting the travel wheel assembly 400.

[0101] The above-mentioned embodiment of the utility model provides a gas transmission pipeline inner surface crack detection device, which is provided with a rotating seat 1, a mounting platform 2, a camera module 3, a walking module and a jet cleaning module 100. When in use, the walking module drives the entire device to move. During the movement, the rotating seat 1 drives the mounting platform 2 to rotate, and the mounting platform 2 drives the camera module 3 to rotate. Due to the setting of the inclined surface, the viewing angle of the camera module 3 is diffuse emission, which can effectively collect internal image information of the underground gas pipeline and send it to the terminal for judgment. In addition, in order to better ensure the effective collection of images, the air supply mechanism in the jet cleaning module 100 supplies air to the piston shell 15, and the gas is ejected from the one-way air outlet pipe assembly 21, so as to intermittently clean the mirror of the camera module 3 to keep the image collection efficient and clear.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas transmission pipeline inner surface crack detection device, characterized in that: include: Walking module; A rotating seat, the rotating seat is installed at the front end of the walking module; A mounting platform, the mounting platform is rotatably arranged on a rotating seat, and a front side of the mounting platform is provided with an inclined surface inclined upward; A camera module, wherein the camera module is installed on the inclined plane; A jet cleaning module, the jet cleaning module includes an air supply mechanism, a piston shell and a one-way air outlet pipe assembly, the one-way air outlet pipe assembly is installed at the front end of the piston shell, the one-way air outlet pipe assembly opens toward the camera module, and the air supply mechanism is used to supply air to the one-way air outlet pipe assembly.

2. A gas transmission pipeline inner surface crack detection device according to claim 1, characterized in that: The gas supply mechanism comprises: A piston plate, the piston plate slides in a sealed manner with the inner wall of the piston shell, and the piston plate divides the piston shell cavity into an air injection cavity and an air supplement cavity; A second positioning block, the second positioning block is fixed to a side of the piston plate away from the one-way air outlet pipe assembly; A one-way air intake pipe assembly, wherein the one-way air intake pipe assembly is fixedly connected to the piston housing; A one-way connecting pipe assembly, wherein the one-way connecting pipe assembly is arranged on the piston plate; A second elastic member, two ends of which are respectively fixedly connected to one side of the piston plate close to the one-way air outlet pipe assembly and the inner wall of the piston shell; The piston plate is connected to a driving mechanism which intermittently drives the piston plate to move toward the second positioning block.

3. A gas transmission pipeline inner surface crack detection device according to claim 2, characterized in that: The driving mechanism comprises: A second rotating shaft, the second rotating shaft is rotatably connected to the piston housing, and the second rotating shaft is connected to a power assembly driving the second rotating shaft to rotate; a third rotating shaft, the third rotating shaft being coaxially fixed with the second rotating shaft; A winding wheel, the winding wheel is mounted on the third rotating shaft through a clamping assembly; A winding rope, one end of which is wound around the winding wheel, and the other end of which is fixedly connected to the piston plate.

4. A gas transmission pipeline inner surface crack detection device according to claim 3, characterized in that: The clamping assembly includes a clamping slider and a third elastic member. The third elastic member is slidably arranged in the winding wheel. One end of the third elastic member is arc-shaped and partially nested in the third rotating shaft. The two ends of the clamping slider are respectively fixedly connected to the bottom of the third elastic member and the inner wall of the winding wheel.

5. A gas transmission pipeline inner surface crack detection device according to claim 3, characterized in that: The walking module comprises: Main body driving mechanism; A running wheel assembly, wherein the running wheel assembly is provided in a plurality of groups and is distributed axially along the main driving mechanism; An elastic support assembly, which is arranged on the main driving mechanism and is used to elastically support the walking wheel assembly; The main body driving mechanism is used to drive the running wheel assembly to operate.

6. A gas transmission pipeline inner surface crack detection device according to claim 5, characterized in that: The main driving mechanism comprises: Installation box; A driving shaft, the driving shaft is rotatably arranged at the axis center of the installation box, and the driving shaft is connected to a driving motor that drives the driving shaft to rotate; A driven telescopic rod, one end of which is connected to the drive shaft via a first gear pair, and the other end of which extends outside the installation box and is connected to the travel wheel assembly via a second gear pair; The driven telescopic rod is rotatably connected to the installation box.

7. A gas transmission pipeline inner surface crack detection device according to claim 6, characterized in that: The driving shaft extends to the rotating seat and is fixedly connected to the mounting platform, and the driving shaft is rotatably connected to the rotating seat.

8. A gas pipeline inner surface crack detection device according to claim 6, characterized in that: The power assembly includes a third gear pair, and the third gear pair is respectively connected to the driving shaft and the second rotating shaft located in the rotating seat, and the second rotating shaft is rotatably connected to the rotating seat.

9. A gas transmission pipeline inner surface crack detection device according to claim 6, characterized in that: The walking wheel assembly comprises: A mounting frame, the mounting frame is connected to the elastic support assembly, and the mounting frame is rotationally connected to the driven telescopic rod; A first rotating shaft, the first rotating shaft is rotatably connected to the mounting frame, and the first rotating shaft is connected to the third gear pair; A rubber wheel is mounted on the first rotating shaft.

10. A gas transmission pipeline inner surface crack detection device according to claim 6, characterized in that: The elastic support assembly comprises: A guide seat, the guide seat is rotatably arranged on the installation box; A slide bar, the slide bar being slidably connected to the guide seat; A first positioning block, the first positioning block is fixed to one end of the slide bar located in the installation box; The first elastic member, the piston shell is sleeved on the slide rod and is located between the guide seat and the walking wheel assembly.

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