Pipeline inspection device

Abstract

The utility model provides a pipeline inspection device which comprises a main body and a sensor arranged on the main body, two power wheel systems are arranged on the main body, and each power wheel system comprises at least three power wheel devices evenly distributed in the circumferential direction. The power wheel device can be arranged in a deflection mode so that the pipeline inspection device can spirally advance in a pipeline. At least one row of sensors are arranged on the main body, and the arrangement direction of the sensors is parallel to the central axis of the main body; a controller and a power supply battery are arranged in the main body, the controller controls the power wheel device, and the power supply battery supplies power to the controller and the power wheel device. The spiral sensor advances in a pipeline in a spiral manner, so that ultrasonic waves emitted by the sensor can form full coverage on the circumference by only arranging several sensors in the axial direction instead of arranging a plurality of sensors in the circumferential direction, the manufacturing cost is greatly reduced, and the spiral sensor is easy to popularize and apply.

Description

Technical Field

[0001] The present invention belongs to the technical field of auxiliary detection of water conservancy facilities, and particularly relates to a pipeline inspection device. Background Art

[0002] The patent with the application number 201210165725.7 discloses a device for pipeline inspection, including: a main body having a longitudinal axis and sensors associated with the main body, wherein the sensors include an array of ultrasonic sensors for inspecting the pipe wall. From the content of its specification and drawings, it can be seen that the ultrasonic sensors are distributed on the main body in an array manner. As Figure 1 shown, when the device travels in the pipeline, in order to be able to detect the pipe wall in all directions, a plurality of ultrasonic sensors must be densely distributed in the circumferential direction, so that the ultrasonic waves emitted by them can completely cover the entire circumferential direction and avoid forming detection dead angles. It can be seen that the disadvantage of this device is that the number of sensors used is relatively large, greatly increasing the manufacturing cost of the device. Summary of the Invention

[0003] The purpose of the present invention is to provide a pipeline inspection device that travels in a spiral manner, so as to reduce the number of sensors used and achieve cost-effective dead-angle-free detection.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A pipeline inspection device includes a main body and sensors provided on the main body. Two power wheel systems are provided on the main body, and each power wheel system includes at least three power wheel devices evenly distributed in the circumferential direction. The power wheel devices can be deflected so that the pipeline inspection device travels spirally in the pipeline; at least one row of sensors is provided on the main body, and the arrangement direction of the sensors is parallel to the central axis of the main body; a controller and a power supply battery are provided in the main body, the controller controls the power wheel devices, and the power supply battery supplies power to the controller and the power wheel devices.

[0005] Further, the main body includes a front housing, a middle housing, and a rear housing; the front housing and the rear housing are both fixedly provided at the corresponding ends of the middle housing; one of the power wheel systems is provided on the front housing, and the other power wheel system is provided on the rear housing; the power supply battery is provided in the middle housing, and the controller is provided in the front housing or the rear housing.

[0006] Further, the driving wheel device includes a rotating seat, a wheel frame, an electric push rod, and a driving wheel; the rotating seat is rotatably installed on the front housing and the rear housing, and its rotation central axis is perpendicular to the central axis of the main body; the wheel frame and the electric push rod are respectively hinged to the rotating seat, and the two form a hinge; the driving wheel is installed at the end of the wheel frame.

[0007] Further, an angle adjustment mechanism is further included, and the driving wheel system is adjusted for the rotation angle through the angle adjustment mechanism.

[0008] Further, an angle adjustment mechanism and a synchronization mechanism are further included. One driving wheel system adjusts the rotation angle through the angle adjustment mechanism and is connected to the other driving wheel system through the synchronization mechanism to form a synchronous angle adjustment.

[0009] Further, the synchronization mechanism is a connecting rod, and the end parts of the connecting rod are respectively hinged to two rotating seats in the same straight line direction of the two driving wheel systems.

[0010] Further, the angle adjustment mechanism includes an adjustment shaft and a pressing disc arranged on the adjustment shaft; the adjustment shaft is threadedly installed on the front housing or / and the rear housing, the pressing disc is vertically arranged on the adjustment shaft, and a plurality of locking surfaces evenly distributed in the circumferential direction are arranged at the end of the rotating shaft of the rotating seat. After the pressing disc abuts against the corresponding locking surface, the rotating seat can be fixed at the corresponding angle.

[0011] Further, a front end cover and a rear end cover are further included. The front end cover is arranged at the rear opening of the front housing, and the rear end cover is arranged at the front opening of the rear housing; first heat dissipation holes are arranged on the wall of the middle housing.

[0012] When the controller is arranged in the front housing, a second heat dissipation hole is arranged on the end face of the front housing, and the front end cover is provided with a ventilation port and a wire passing hole.

[0013] When the controller is arranged in the rear housing, a second heat dissipation hole is arranged on the end face of the rear housing, and the rear end cover is provided with a ventilation port and a wire passing hole.

[0014] Further, a heat dissipation fan is arranged at the ventilation port.

[0015] Further, the inner cavity of the middle housing is a cylindrical cavity, and a limiting component for limiting the left and right sides and the upper and lower sides of the power supply battery is arranged on the wall of the inner cavity.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present invention travels in a pipeline in a spiral manner, so that the sensor can form full coverage on the circumference with only a few sensors arranged along the axial direction instead of multiple sensors arranged in the circumferential direction, greatly reducing the manufacturing cost and being easy to promote and apply.

[0018] 2. The present invention realizes in-pipe travel in a self-powered manner without an external power supply, simplifying the overall structure.

[0019] 3. The present invention adopts a double-angle adjustable power wheel system, which can not only adapt to a certain range of pipe diameters, but also determine the number of sensors according to the angle size. Description of the Drawings

[0020] Figure 1 Schematic diagram of ultrasonic coverage in the prior art;

[0021] Figure 2 Stereogram of the structure of a preferred embodiment of the present invention;

[0022] Figure 3 For Figure 2 Top view of the structure of the illustrated embodiment;

[0023] Figure 4 For Figure 3 Cross-sectional view of the structure taken along the A-A direction in

[0024] Figure 5 For Figure 4 Local enlarged view at I in

[0025] Figure 6 For Figure 2 Side view of the structure of the illustrated embodiment;

[0026] Figure 7 For Figure 6 Cross-sectional view of the structure taken along the B-B direction in

[0027] Figure 8 For Figure 6 Cross-sectional view of the structure taken along the C-C direction in

[0028] Figure 9 For Figure 2 Rear view of the structure of the illustrated embodiment;

[0029] Figure 10 Schematic diagram of ultrasonic coverage in the present invention. Detailed Implementation Manner

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] As shown in Figures 2 to 10 the figure, the present invention provides a pipeline inspection device 300, which includes a main body 100, a sensor 12, a power wheel 7 system, a controller 14 and a power supply battery 13.

[0032] As a preferred example, the main body 100 includes a front housing 2, a middle housing 1 and a rear housing 3. The above structural members are all hexagonal prism structures, and their inner cavities are all cylindrical cavities.

[0033] Outstanding openings are formed at the rear end of the front housing 2 and the front end of the rear housing 3. Tongue-and-groove structures matching the openings are provided at the front and rear ends of the middle housing 1. Three front connection parts 2.1 are arranged on the outer side of the front housing 2 in a circumferential direction. Similarly, three rear connection parts 3.1 are arranged on the outer side of the rear housing 3 in a circumferential direction. Connection holes are provided on the front connection part 2.1 and the rear connection part 3.1, so that after passing through the double-headed screw 9, they can be locked with nuts, thereby fixing the front housing 2 and the rear housing 3 at both ends of the middle housing 1.

[0034] One to three rows of sensors 12 are provided. Each row of sensors 12 has 5-8 ultrasonic sensors 12 arranged in a straight line, and they are fixed on the middle housing 1 by using a sensor seat 11. The arrangement direction of the ultrasonic sensors 12 is parallel to the central axis of the middle housing 1.

[0035] Two power wheel 7 systems are provided. One power wheel 7 system is arranged on the front housing 2, and the other power wheel 7 system is arranged on the rear housing 3. Each power wheel 7 system includes three power wheel devices 200 arranged evenly in the circumferential direction. The power wheel devices 200 can be deflected so that the pipeline inspection device 300 can travel spirally in the pipeline 400.

[0036] As a preferred example, the driving wheel device 200 includes a rotating base 4, a wheel frame 5, an electric push rod 6, and a driving wheel 7. The rotating base 4 is rotatably installed on the front housing 2 and the rear housing 3, and its rotation central axis is perpendicular to the central axis of the main body 100. The wheel frame 5 and the electric push rod 6 are respectively hinged and installed on the rotating base 4, and the two form a hinge. The driving wheel 7 is installed at the end of the wheel frame 5, and a hub motor is used as the power source. The wheel frame 5 can change the lifting angle under the drive of the electric push rod 6, so as to change the radial opening size of the driving wheel 7 to meet the usage requirements of pipe diameters within a certain range. Changing the angle of the rotating base 4 can change the pitch of the spiral path during the overall travel, thereby changing the number of sensors 12 participating in the detection. The angle adjustment of the rotating base 4 is realized by an angle adjustment mechanism, and the specific method is as follows:

[0037] One way is that each driving wheel 7 system adjusts the rotation angle through an angle adjustment mechanism.

[0038] Another way is that one driving wheel 7 system adjusts the rotation angle through an angle adjustment mechanism, and is connected to another driving wheel 7 system through a synchronization mechanism to form a synchronous angle adjustment. The synchronization mechanism is a connecting rod 8. The end parts of the connecting rod 8 are respectively hinged on two rotating bases 4 located in the same straight line direction in the two driving wheel 7 systems, thereby forming a parallelogram connecting rod 8 mechanism. When one rotating base rotates, it will drive another rotating base at the end of the same connecting rod 8 to rotate by the same angle.

[0039] As a preferred example, the angle adjustment mechanism includes an adjustment shaft 17 and a pressing disc 18 arranged on the adjustment shaft 17. The adjustment shaft 17 is a bolt. Correspondingly, a threaded hole is provided in the center of the front housing 2 or / and the rear housing 3. When adjusting in the first above-mentioned way, the two adjustment shafts 17 are respectively installed in the threaded holes of the front housing 2 and the rear housing 3 through threads. When adjusting in the second above-mentioned way, one adjustment shaft 17 is installed in the threaded hole of the front housing 2 or the rear housing 3 through threads.

[0040] At the end of the rotating shaft 4.1 of the rotating base 4, 18 locking surfaces 4.2 are arranged evenly along the circumferential direction. Each time a locking surface 4.2 is switched, the corresponding adjustment angle is 20°. When the adjustment shaft 17 is rotated inward, the pressing disc 18 presses against the corresponding locking surface 4.2, and at this time, the rotating base 4 will be fixed at the corresponding angle. When adjustment is required, the adjustment shaft 17 is rotated outward, and the pressing disc 18 leaves the locking surface 4.2. At this time, the rotating base 4 can be adjusted to another angle, and then the adjustment shaft 17 is rotated in the reverse direction to lock the rotating base 4. A scale is provided on the outer wall of the front housing 2 or / and the rear housing 3, and a pointer is provided on the rotating base 4. During adjustment, the angle can be determined by the pointing of the pointer.

[0041] Such as Figure 10As shown, obviously, if the sensor 12 is arranged in a row, the pitch of the corresponding helix should be reduced during the overall helical travel. If the sensor 12 is arranged in three rows, the pitch of the corresponding helix should be increased during the overall helical travel.

[0042] The power supply battery 13 is arranged in the middle housing 1. Since the inner cavity of the middle housing 1 is a cylindrical cavity and the power supply battery 13 is a square lithium battery, a limiting component 10 for limiting the left and right sides and the upper and lower sides of the power supply battery 13 is arranged on the inner cavity wall of the middle housing 1. The limiting component 10 includes a bottom limiting part, a side limiting part and a top limiting part, so as to prevent the power supply battery 13 from shaking during the helical travel.

[0043] The controller 14 is arranged in the front housing 2 or the rear housing 3. The controller 14 controls the power wheel device 200, and the power supply battery 13 supplies power to the controller 14 and the power wheel device 200. The circuit part and the control part are both prior arts, so they will not be elaborated.

[0044] As a preferred example, in order to install corresponding components, the device further includes a front end cover 15 and a rear end cover 16. The front end cover 15 is arranged at the rear opening of the front housing 2, and the rear end cover 16 is arranged at the front opening of the rear housing 3. A second heat dissipation hole 3.1 is arranged on the housing wall of the middle housing 1.

[0045] When the controller 14 is arranged in the front housing 2, a second heat dissipation hole 3.1 is arranged on the end face of the front housing 2, and the front end cover 15 is provided with a ventilation port 16.2 and a wire passing hole 16.1.

[0046] When the controller 14 is arranged in the rear housing 3, a second heat dissipation hole 3.1 is arranged on the end face of the rear housing 3, and the rear end cover 16 is provided with a ventilation port 16.2 and a wire passing hole 16.1.

[0047] As a preferred example, in order to improve the heat dissipation capacity, a heat dissipation fan 19 is arranged at the ventilation port 16.2. The controller 14 controls the operation of the heat dissipation fan 19 to achieve efficient heat dissipation.

[0048] During the detection, the pitch of the travel track is determined according to the number of sensors 12, and then the angle of the wheel frame 5 is adjusted according to the pipe diameter so that the power wheel 7 can closely adhere to the pipe wall. Finally, the device is started and placed into the pipe 400. The device travels in a helical manner, and the ultrasonic waves generated by each row of sensors 12 move along the helical track 500 to completely cover the entire pipe wall, so as to obtain a more comprehensive detection result and there will be no detection dead angle. Compared with the existing device that travels along a straight line for detection, the number of sensors 12 used can be greatly reduced, thereby reducing the manufacturing cost.

[0049] Where the present invention is not elaborated, they are all well-known technologies to those skilled in the art.

[0050] It should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. A pipeline inspection device, comprising a main body and a sensor arranged on the main body, characterized in that: Two power wheel systems are arranged on the main body, each power wheel system includes at least three power wheel devices evenly distributed along the circumference, and the power wheel device can be deflected so that the pipeline inspection device can spirally move in the pipeline; the sensors are arranged in at least one row on the main body, and the arrangement direction of the sensors is parallel to the central axis of the main body; a controller and a power supply battery are arranged in the main body, the controller controls the power wheel device, and the power supply battery supplies power to the controller and the power wheel device.

2. A pipeline inspection device according to claim 1, characterized in that: The main body includes a front shell, an intermediate shell and a rear shell; the front shell and the rear shell are both fixedly arranged at the corresponding ends of the intermediate shell; one power wheel system is arranged on the front shell, and the other power wheel system is arranged on the rear shell; the power supply battery is arranged in the intermediate shell, and the controller is arranged in the front shell or the rear shell.

3. A pipeline inspection device according to claim 2, characterized in that: The power wheel device includes a rotating seat, a wheel frame, an electric push rod and a power wheel; the rotating seat is rotatably mounted on the front shell and the rear shell, and its rotation center axis is perpendicular to the center axis of the main body; the wheel frame and the electric push rod are respectively hingedly mounted on the rotating seat, and the two form a hinge; the power wheel is mounted on the end of the wheel frame.

4. A pipeline inspection device according to claim 3, characterized in that: It also includes an angle adjustment mechanism, and the power wheel system adjusts the rotation angle through the angle adjustment mechanism.

5. A pipeline inspection device according to claim 3, characterized in that: It also includes an angle adjustment mechanism and a synchronization mechanism, wherein one power wheel system adjusts the rotation angle through the angle adjustment mechanism, and is connected to another power wheel system through the synchronization mechanism to form a synchronized angle adjustment.

6. A pipeline inspection device according to claim 5, characterized in that: The synchronization mechanism is a connecting rod, and the ends of the connecting rod are respectively hinged to two rotating seats located in the same straight line direction in the two power wheel systems.

7. A pipeline inspection device according to claim 4 or 5, characterized in that: The angle adjustment mechanism includes an adjusting shaft and a clamping plate arranged on the adjusting shaft; the adjusting shaft is threadedly mounted on the front shell and / or the rear shell, the clamping plate is vertically arranged on the adjusting shaft, and the end of the rotating shaft of the rotating seat is provided with a plurality of locking surfaces evenly distributed along the circumferential direction, and the clamping plate can fix the rotating seat at a corresponding angle after abutting against the corresponding locking surface.

8. A pipeline inspection device according to claim 2, characterized in that: It also includes a front end cover and a rear end cover, wherein the front end cover is arranged at the rear end opening of the front shell, and the rear end cover is arranged at the front end opening of the rear shell; a first heat dissipation hole is arranged on the shell wall of the intermediate shell; When the controller is arranged in the front shell, the end surface of the front shell is provided with a second heat dissipation hole, and the front end cover is provided with a vent and a wire hole; When the controller is arranged in the rear shell, the end surface of the rear shell is provided with a second heat dissipation hole, and the rear end cover is provided with a vent and a wire passing hole.

9. A pipeline inspection device according to claim 8, characterized in that: A heat dissipation fan is arranged at the vent.

10. A pipeline inspection device according to claim 2, characterized in that: The inner cavity of the intermediate shell is a cylindrical cavity, and the wall of the inner cavity is provided with a limiting component for limiting the left and right sides and the upper and lower sides of the power supply battery.

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