CN108279268B - Pipeline detection device - Google Patents
Pipeline detection device Download PDFInfo
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- CN108279268B CN108279268B CN201810326156.7A CN201810326156A CN108279268B CN 108279268 B CN108279268 B CN 108279268B CN 201810326156 A CN201810326156 A CN 201810326156A CN 108279268 B CN108279268 B CN 108279268B
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- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
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Abstract
The invention provides a pipeline detection device, comprising: the device comprises a rack, a first walking frame, a second walking frame, an adjusting device and a detecting device; the first walking frame and the second walking frame are arranged at intervals along the direction vertical to the running direction, the second walking frame is connected with the rack, the first walking frame is connected with the rack through an adjusting device, and the adjusting device is used for adjusting the distance between the first walking frame and the second walking frame; a plurality of magnetic wheels are arranged on the first walking frame and the second walking frame at intervals along the running direction; the detection device is used for detecting defects on the pipeline; the distance between the first walking frame and the second walking frame can be adjusted through the adjusting device, and then the distance between the magnetic wheel on the first walking frame and the magnetic wheel on the second walking frame is adjusted, so that the pipeline detecting device can detect pipelines with different diameters, and the universality of the pipeline detecting device is enhanced.
Description
Technical Field
The invention relates to the technical field of pipeline detection, in particular to a pipeline detection device.
Background
In the production process of oil and natural gas, pipelines are often used to transport oil or natural gas; the pipeline is generally composed of a plurality of cast iron pipes or steel pipes which are welded together, and the pipeline is easy to collide with external objects in the installation or transportation process, so that the defects of holes or cracks and the like are formed on the side wall of the pipeline; when oil or natural gas flows in the pipeline, the oil or natural gas can flow out from the defect part, so that the pipeline leakage is caused; therefore, how to detect the pipe after the cast iron pipe or the steel pipe is installed to repair the defect becomes a hot point of research.
In the prior art, a pipeline detection device is often adopted to detect a pipeline, and the pipeline detection device comprises a rack, a magnetic wheel, a detection magnet, a hall element and an alarm device; the rack is rectangular, and a cross rod is arranged on the upper surface of the rack; the four magnetic wheels are rotatably arranged at the included angle of the frame and mainly comprise permanent magnets; the detection magnet and the Hall element are both arranged on the lower side surface of the rack, and the Hall element is electrically connected with the alarm device. When the device is used, the rack is arranged on the surface of the pipeline, the magnetic wheel is in contact with the pipeline, and the magnetic wheel is attached to the pipeline by the attraction force between the magnetic wheel and the pipeline; the staff pushes the cross rod, so that the pipeline detection device moves on the side wall of the pipeline; meanwhile, the detection magnet can magnetize the pipe wall at the lower part of the detection magnet, so that a magnetic field is formed in the pipe wall; when the pipeline has defects, the magnetic field is leaked to the outside of the pipeline from the defects, and then the Hall element detects the magnetic field outside the pipeline, so that the detection signal is input into the alarm device, and the alarm device gives an alarm.
However, in the prior art, the diameter of the pipeline is often different according to the conveying capacity of the pipeline; however, the distance between the magnetic wheels is fixed, so that the pipeline detection device can only detect pipelines with the same diameter, and the universality is poor.
Disclosure of Invention
In view of this, the present invention provides a pipeline detection device to solve the problem that in the prior art, the diameters of pipelines are often different according to different pipeline transportation capacities; but the distance between each magnetic wheel is certain, so that the pipeline detection device can only detect pipelines with the same diameter, and the universality is poor.
The invention provides a pipeline detection device, which comprises: the device comprises a rack, a first walking frame, a second walking frame, an adjusting device and a defect detecting device; the first walking frame and the second walking frame are arranged at intervals along a direction perpendicular to the running direction, the second walking frame is connected with the rack, the first walking frame is connected with the rack through the adjusting device, and the adjusting device is used for adjusting the distance between the first walking frame and the second walking frame; a plurality of magnetic wheels are arranged on the first walking frame and the second walking frame at intervals along the running direction; the defect detection device is used for detecting defects on the pipeline.
The pipeline inspection device as described above, preferably, the adjusting device includes: a drive screw and a rotating device; the driving screw is rotatably connected with the rack, a first driving thread is arranged on the driving screw, and a first driving nut matched with the first driving thread is arranged on the first travelling frame; the rotating device is in transmission connection with the driving end of the driving screw rod; the frame is provided with a slide rail with a central line perpendicular to the running direction, the first walking frame is provided with a first slide groove, and the slide rail is sleeved with the first slide groove.
In the above pipeline detection device, preferably, a second chute is arranged on the second walking frame; the second sliding groove is sleeved on the sliding rail; the driving screw comprises a first section and a second section, the first driving thread is arranged on the first section, the second section is provided with a second driving thread, and the rotating directions of the first driving thread and the second driving thread are opposite; and a second driving nut matched with the second driving thread is arranged on the second walking frame.
The pipeline detection device as described above, preferably, the pipeline detection device further includes a locking device, connected to the braking end of the driving screw, for preventing the driving screw from rotating after the distance between the first traveling frame and the second traveling frame is adjusted.
The pipe inspection device as described above, preferably, the locking device includes: the brake comprises an electromagnet, a rotating sheet and a brake sheet; the rotating sheet is in transmission connection with the rear end of the driving screw rod, and the brake sheet is connected with the rack; the electromagnet is arranged on the rack and used for attracting the brake pad.
The pipeline detection device as described above, preferably, the pipeline detection device further includes a first driving device, and the first driving device is in transmission connection with the magnetic wheel on the first traveling frame.
The pipeline detection device as described above, preferably, the pipeline detection device further includes a second driving device, and the second driving device is in transmission connection with the magnetic wheel on the second walking frame.
The pipeline inspection device as described above, preferably, the pipeline inspection device further includes a controller and a position measurement device, the controller is electrically connected to the defect detection device and the position measurement device respectively; the position measuring device is used for detecting the position of the pipeline.
The pipeline detection device as described above, preferably, the position measurement device includes a first detection wheel, a second detection wheel, a first encoder and a second encoder, the first detection wheel is in transmission connection with the first encoder and is disposed at the front end of the frame along the running direction, and the axis of the first detection wheel is perpendicular to the running direction; the second detection wheel is in transmission connection with the second encoder and is arranged at the rear end of the rack along the running direction, and the axis of the second detection wheel is arranged in parallel to the running direction; the first encoder and the second encoder are both electrically connected with the controller.
The pipeline detection device as described above, preferably, the defect detection device includes a first detection magnet, a second detection magnet, and a hall element, the first detection magnet and the second detection magnet are disposed at an interval in the operation direction, and the hall element is disposed between the first detection magnet and the second detection magnet.
According to the pipeline detection device provided by the invention, the first walking frame and the second walking frame are respectively arranged on the rack and are arranged at intervals along the direction vertical to the running direction; the second walking frame is connected with the rack, and the first walking frame is connected with the rack through an adjusting device; a plurality of magnetic wheels are arranged on the first walking frame and the second walking frame at intervals along the running direction; the defect detection device is used for detecting defects on the pipeline; the distance between the first walking frame and the second walking frame can be adjusted through the adjusting device, and then the distance between the magnetic wheel on the first walking frame and the magnetic wheel on the second walking frame is adjusted, so that the pipeline detecting device can detect pipelines with different diameters, and the universality of the pipeline detecting device is enhanced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pipeline detection device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the connection of the first and second traveling frames to the frame in FIG. 1;
FIG. 3 is a bottom schematic view of a pipeline inspection device according to an embodiment of the present invention;
FIG. 4 is a schematic view of the first detection wheel of FIG. 3;
FIG. 5 is a schematic view of the first driving device and the magnetic wheel in FIG. 3;
fig. 6 is a schematic structural view of the driving screw of fig. 1.
Description of reference numerals:
10. a frame; 101. A first traveling frame;
102. a second walking frame; 103. A drive screw;
104. a rotating device; 105. A locking device;
106. a slide rail; 107. A magnetic wheel;
108. a button plate; 1031. A first drive thread;
1032. a second drive thread; 1081. A button;
20. a first driving device; 30. A second driving device;
40. a position measuring device; 401. A first detection wheel;
402. a first encoder; 403. A second detection wheel;
404. a second encoder; 405. A first vertical rail;
406. a first tension spring; 4011. A first turntable;
4012. a first rotating roller; 4013. A second turntable;
4014. a second rotating roller; 50. A defect detecting device;
501. a first detection magnet; 502. A second detection magnet;
503. a Hall element.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, unless otherwise specifically stated, the terms "mounted," "connected," "fixed," and the like are to be understood broadly, and for example, may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected internally or in any other manner known to those skilled in the art, unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural diagram of a pipeline detection device according to an embodiment of the present invention; FIG. 2 is a schematic view of the connection of the first and second traveling frames to the frame in FIG. 1; FIG. 3 is a bottom schematic view of a pipeline inspection device according to an embodiment of the present invention; FIG. 4 is a schematic view of the first detection wheel of FIG. 3; FIG. 5 is a schematic view of the first driving device and the magnetic wheel in FIG. 3; fig. 6 is a schematic structural view of the driving screw of fig. 1.
Please refer to fig. 1-6. The present embodiment provides a pipeline detection device, including: a frame 10, a first traveling frame 101, a second traveling frame 102, an adjusting device, and a defect detecting device 50; the first walking frame 101 and the second walking frame 102 are arranged at intervals along a direction perpendicular to the running direction, the first walking frame 101 is connected with the rack 10 through an adjusting device, and the adjusting device is used for adjusting the distance between the first walking frame 101 and the second walking frame 102; the second walking frame 102 is connected with the frame 10; a plurality of magnetic wheels 107 are arranged on the first walking frame 101 and the second walking frame 102 at intervals along the running direction; the defect detecting device 50 is used for detecting defects on the pipeline.
In this embodiment, the running direction is a direction parallel to the axis of the pipe.
In this embodiment, the frame 10 may be a rectangular flat plate, or the frame 10 may be a rectangular frame; of course, in other embodiments, the frame 10 may have a regular shape such as a circle, a triangle, or other irregular shapes.
The second walking frame 102 is plate-shaped, and the second walking frame 102 may be disposed parallel to the frame 10, or the second walking frame 102 may be disposed at an angle with respect to the frame 10. The second traveling frame 102 may be connected to the frame 10 by welding or bolting, or the second traveling frame 102 may be integrally formed with the frame 10 by casting. A plurality of magnetic wheels 107 are arranged on the second walking frame 102 at intervals along the running direction, and each magnetic wheel 107 is rotatably connected with the second walking frame 102. The magnetic wheel 107 is mainly composed of a magnet, so that after the magnetic wheel 107 contacts the pipeline, the magnetic wheel 107 is attached to the side wall of the pipeline through the attraction between the magnet and the pipeline, and the pipeline detection device is prevented from falling off the pipeline. Preferably, one magnetic wheel 107 may be respectively disposed at both ends of the second walking frame 102 in the running direction; of course, the magnetic wheel 107 can also be more than two, for example: three, four, etc., and correspondingly, the magnetic wheels 107 are provided on the second traveling frame 102 at intervals in the traveling direction.
The structure of the first traveling frame 101 may be the same as that of the second traveling frame 102, the first traveling frame 101 is connected to the frame 10 through an adjusting device, and the adjusting device may be various as long as the distance between the first traveling frame 101 and the second traveling frame 102 can be adjusted; for example: the adjusting device comprises: the center line of the guide post is perpendicular to the running direction, the guide post is connected with the rack 10, a guide hole is formed in the first walking frame 101, and the guide post penetrates through the guide hole; the cylinder body of the adjusting cylinder is connected with the frame 10, the piston rod of the adjusting cylinder is connected with the first walking frame 101, and the central line of the adjusting cylinder is perpendicular to the running direction. When the device works, the piston rod is driven to extend out of the cylinder body or contract towards the cylinder body, so that the first walking frame 101 is driven to move towards the second walking frame 102 or move towards the direction departing from the second walking frame 102, and the distance between the first walking frame 101 and the second walking frame 102 is further changed.
Preferably, the first traveling frame 101 may be disposed in parallel with the frame 10, or the first traveling frame 101 may be disposed at an angle with respect to the frame. In this embodiment, the included angle between the first walking frame 101 and the rack 10 is an acute angle, and the included angle between the second walking frame 102 and the rack 10 is also an acute angle, so that when the pipeline detection device is placed on a pipeline, the side surface of each magnetic wheel 107 is in full contact with the pipe wall of the pipeline.
The defect detection device 50 in this embodiment may be various, as long as it can detect defects such as cracks, holes, etc. on the pipeline; for example: the defect detecting device 50 may include a detecting electromagnet, a magnetic sensor, and an alarm device; the detection electromagnet and the magnetic sensors are arranged on the lower surface of the rack 10 facing the pipeline at intervals, and the magnetic sensors are connected with the alarm device; when the device works, the detection electromagnet is electrified to generate a magnetic field, so that the pipeline at the lower part of the detection electromagnet is magnetized, and the magnetic field is arranged in the pipeline; if the pipeline has defects, the magnetic field can be leaked to the outer side of the pipeline from the defects and then received by the magnetic sensor, the magnetic sensor generates an alarm signal, the alarm device gives an alarm to prompt workers, and the pipeline at the lower part of the magnetic sensor has the defects.
The use process of the pipeline detection device provided by the embodiment is as follows: the worker places the frame 10, the first traveling frame 101, and the second traveling frame 102 on the pipeline and brings the respective magnetic wheels 107 into contact with the side wall of the pipeline, and then pushes the pipeline inspection device, and the respective magnetic wheels 107 rotate on the side wall of the pipeline to move the pipeline inspection device on the side wall of the pipeline; meanwhile, the defect detecting device 50 detects the side wall of the pipeline to realize the detection of the pipeline. Before use or when a pipeline with other pipe diameters is detected, the distance between the first walking frame 101 and the second walking frame 102 is adjusted through an adjusting device, and then the distance between the magnetic wheels 107 on the first walking frame 101 and the magnetic wheels 107 on the second walking frame 102 is changed, so that each magnetic wheel 107 can be in full contact with the side wall of the detected pipeline; the pipeline detection device can detect pipelines with different diameters.
In the pipeline detection device provided by this embodiment, the first walking frame 101 and the second walking frame 102 are respectively arranged on the rack 10 and are arranged at intervals along a direction perpendicular to the running direction; the second walking frame 102 is connected with the frame 10, and the first walking frame 101 is connected with the frame 10 through an adjusting device; a plurality of magnetic wheels 107 are arranged on the first walking frame 101 and the second walking frame 102 at intervals along the running direction; the defect detection device 50 is used for detecting defects on the pipeline; the distance between the first walking frame 101 and the second walking frame 102 can be adjusted through the adjusting device, and then the distance between the magnetic wheel 107 on the first walking frame 101 and the magnetic wheel 107 on the second walking frame 102 is adjusted, so that the pipeline detecting device can detect pipelines with different diameters, and the universality of the pipeline detecting device is enhanced.
Continuing with fig. 1, 2, and 6. Specifically, the adjusting device includes: a drive screw 103 and a rotating device 104; the driving screw 103 is rotatably connected with the frame 10, a first driving thread 1031 is arranged on the driving screw 103, and a first driving nut matched with the first driving thread 1031 is arranged on the first traveling frame 101; the rotating device 104 is connected with the driving end of the driving screw 103 and is used for driving the driving screw 103 to rotate; the rack 10 is provided with a slide rail 106 whose central line is perpendicular to the running direction, and the first walking frame 101 is provided with a first slide groove which is sleeved on the slide rail 106. By rotating the driving screw 103, the first traveling frame 101 is driven to move, and by controlling the angle of the rotating driving screw 103, the distance between the first traveling frame 101 and the second traveling frame 102 can be accurately controlled.
The driving screw 103 is rotatably connected with the frame 10; preferably, a first connecting plate and a second connecting plate are arranged on the frame 10 at intervals upwards, a first shaft hole and a second shaft hole are respectively arranged on the first connecting plate and the second connecting plate, and the driving screw 103 is arranged in the first shaft hole and the second shaft hole in a penetrating manner; first annular backstop groove and second backstop groove have been seted up to the spaced on drive screw 103 to first annular backstop groove and second backstop groove are located the both sides of first connecting plate respectively, press from both sides respectively in first annular backstop groove and second annular backstop inslot and are equipped with first backstop ring and second backstop ring, and first backstop ring and second backstop ring press from both sides and establish the both sides at first connecting plate, and then prevent drive screw 103 along the direction that is on a parallel with the axis and move in first shaft hole and second shaft hole.
Preferably, a first rolling bearing and a second rolling bearing are respectively arranged in the first shaft hole and the second shaft hole, and inner rings of the first rolling bearing and the second rolling bearing are both connected with the driving screw 103 so as to reduce friction force when the driving screw 103 rotates.
Further preferably, still include the handspike, the both ends of handspike are connected with the one end that first connecting plate and second connecting plate deviate from the frame respectively to remove pipeline detection device through the handspike, be convenient for pipeline detection device's transportation.
In this embodiment, the rotating device 104 may be various, as long as the rotating device 104 can drive the driving screw 103 to rotate; for example: the rotating device 104 may include a rotating motor, a main shaft of the rotating motor is connected to the front end of the driving screw 103 through a coupling, and the driving screw 103 is driven to rotate by the rotating motor; further, the rotation motor is a stepping motor, and the rotation angle of the driving screw 103 is accurately controlled by controlling the number of driving signals input to the stepping motor. Preferably, the rotating device 104 may further include a rotating arm, the rotating arm is perpendicular to the axis of the driving screw 103 and is in transmission connection with the front end of the driving screw 103, and the driving screw 103 is driven to rotate by twisting the rotating arm, so that the adjustment is convenient.
With continued reference to fig. 1 and 2. A second chute is arranged on the second walking frame 102; the second chute is sleeved on the slide rail 106; the driving screw 103 comprises a first section and a second section, wherein a first driving thread 1031 is arranged on the first section, a second driving thread 1032 is arranged on the second section, and the rotation directions of the first driving thread 1031 and the second driving thread 1032 are opposite; a second driving nut matched with the second driving thread 1032 is arranged on the second walking frame 102. When the driving screw 103 rotates, the first traveling frame 101 and the second traveling frame 102 move in opposite directions, and the first traveling frame 101 and the second traveling frame 102 move simultaneously, so that the distance between the first traveling frame 101 and the second traveling frame 102 can be rapidly adjusted.
Preferably, the slide rail 106 is a linear guide rail, and the slide rail 106 is connected with the rack 10 by a bolt connection; correspondingly, the first sliding groove and the second sliding groove are respectively matched with the linear guide rail.
Further preferably, there are two slide rails 106, and the two slide rails 106 are arranged on the rack 10 at intervals along the running direction; correspondingly, two first sliding grooves are arranged on the first walking frame 101 at intervals, two second sliding grooves are arranged on the second walking frame 102 at intervals, and each sliding rail 106 is provided with one first sliding groove and one second sliding groove; the first walking frame 101 and the second walking frame 102 are both connected with the frame 10 through two slide rails 106, so that the first walking frame 101 and the second walking frame 102 are prevented from vibrating during operation, and the stability of operation is further improved.
With continued reference to fig. 1 and 2. The pipeline detecting device provided by the present embodiment further includes a locking device 105, and the locking device 105 is connected to the braking end of the driving screw 103 and is used for preventing the driving screw 103 from rotating after the distance between the first traveling frame 101 and the second traveling frame 102 is adjusted. So that the driving screw 103 is locked after the distance between the first and second traveling frames 101 and 102 is adjusted, thereby preventing the driving screw 103 from rotating due to the vibration of the frame 10 and further changing the distance between the first and second traveling frames 101 and 102 when the pipeline inspection device is in operation.
Specifically, the drive end and the brake end of the drive screw 103 are located at both ends of the drive screw 103, respectively.
The locking device 105 in this embodiment may be various, for example: the locking device 105 comprises a locking bolt, a locking threaded hole is arranged on the frame 10, and the locking bolt is screwed into the locking threaded hole; after the distance between the first traveling frame 101 and the second traveling frame 102 is adjusted, the locking bolt is rotated, so that the tail end of the locking bolt abuts against the driving screw 103, and the driving screw 103 is prevented from rotating by the friction force between the locking bolt and the driving screw 103, so that the driving screw 103 is locked.
The lock device 105 includes: the brake comprises an electromagnet, a rotating sheet and a brake sheet; the rotating sheet is in transmission connection with the rear end of the driving screw 103, and the brake sheet is connected with the frame 10; the electromagnet is disposed on the frame 10 for attracting the brake pad so that the brake pad is attached to the rotor. The brake pad is attached to the rotating sheet by electrifying the electromagnet, friction force is generated between the brake pad and the rotating sheet, and the rotating sheet and the driving screw 103 are prevented from rotating, so that the brake pad is simple to operate and quick to lock.
The rotating sheet can be connected with the driving screw 103 through a coupler; a plurality of sliding columns are arranged on the brake pad, the central lines of the sliding columns are arranged in parallel with the axis of the driving screw 103, a plurality of sliding holes are arranged on the frame 10, and each sliding column is arranged in one sliding hole in a sliding manner; the brake block is the iron sheet, or the brake block mainly comprises other ferromagnetism materials, and when the electro-magnet was electrified, the electro-magnet attracted the brake block and moved to the rotor plate, and then made the brake block attached on the rotor plate, realized the locking to drive screw 103. Preferably, a friction plate for contacting the rotating plate is further provided on the brake pad, and the friction plate is mainly composed of ceramic to increase a frictional force between the friction plate and the rotating plate.
Continuing with fig. 1, 2, 3, and 5. Specifically, the pipeline detection device provided by the present embodiment further includes a first driving device 20, and the first driving device 20 is in transmission connection with the magnetic wheel 107 on the first traveling frame 101 to drive the magnetic wheel 107 to rotate. The magnetic wheel 107 on the first walking frame 101 is driven to rotate by the driving device, so that the pipeline detection device is driven to move, the pipeline detection device is prevented from being pushed by a worker to move, and the operation is simple and labor-saving.
In this embodiment, the driving device may be various, as long as the driving device can drive the magnetic wheel 107 on the first traveling frame 101 to rotate; for example: the driving device can be a stepping motor, the stepping motor is connected with the first walking frame 101 in a bolt connection mode, a main shaft of the stepping motor is in transmission connection with a magnetic wheel 107 on the first walking frame 101, and the rotating speed and the rotating angle of the stepping motor can be controlled by controlling the frequency and the time of a driving signal input into the stepping motor, so that the walking speed and the walking distance of the pipeline detection device are controlled. Preferably, the driving device in this embodiment is a micro dc motor.
With continued reference to fig. 3. Specifically, the pipeline detection device provided by the present embodiment further includes a second driving device 30, and the second driving device 30 is in transmission connection with the magnetic wheel 107 on the second walking frame 102 to drive the magnetic wheel 107 to rotate. The magnetic wheel 107 on the second walking frame 102 can be driven to rotate by the second driving device 30, so that the magnetic wheels 107 on the first walking frame 101 and the second walking frame 102 simultaneously drive the pipeline detection device to move, and the driving force is improved; in addition, by making the rotational speeds of the first and second driving devices 20 and 30 different, the pipe inspection device can be rotated along the side wall of the pipe while moving along the axis of the pipe, i.e., the pipe inspection device moves along a spiral line.
Preferably, each magnetic wheel 107 on the first traveling frame 101 is provided with a chain wheel, and a transmission chain is matched with each chain wheel, so that the first driving device 20 can drive each magnetic wheel 107 on the first traveling frame 101 to rotate synchronously. It is further preferable that each magnetic wheel 107 of the second walking frame 102 is also provided with a chain wheel, and the transmission chain is matched with each chain wheel, so that the second driving device 30 can drive each magnetic wheel 107 of the second walking frame 102 to rotate synchronously.
With continued reference to fig. 1. The pipeline detection device provided by the embodiment further comprises a controller and a position measurement device 40, wherein the controller is electrically connected with the defect detection device 50 and the position measurement device 40 respectively; the position measuring device 40 is used to detect the position of the pipe. When the defect detection device 50 detects that the pipeline has a defect, the controller acquires the position of the pipeline detected by the position measurement device 40, and further determines the position of the defect on the pipeline; after the pipeline detection device finishes the detection of the pipeline, the positions of all detected defects can be acquired in the controller, so that the subsequent repair is facilitated.
Preferably, the controller may be a single chip microcomputer, a programmable logic controller, or the like capable of executing a program stored therein.
Preferably, the position measuring device 40 may be a laser range finder, and in operation, the laser range finder emits a laser beam to the end of the pipeline, the laser beam irradiates the end of the pipeline and then reflects the laser beam to the laser range finder, and according to the time interval between the emitted laser beam and the received reflected laser beam, the position of the pipeline detection device on the pipeline is calculated and input into the controller.
With continued reference to fig. 3. Specifically, the position measuring device 40 includes a first detecting wheel 401, a second detecting wheel 403, a first encoder 402 and a second encoder 404, the first detecting wheel 401 is in transmission connection with the first encoder 402 and is arranged at the front end of the frame 10 along the running direction, and the axis of the first detecting wheel 401 is arranged perpendicular to the running direction; the second detection wheel 403 is in transmission connection with the second encoder 404 and is arranged at the rear end of the rack 10 along the running direction, and the axis of the second detection wheel 403 is arranged parallel to the running direction; the first encoder 402 and the second encoder 404 are each electrically connected to the controller. The first encoder 402 can detect the distance traveled by the pipeline inspection device in a direction parallel to the centerline of the pipeline, and the second encoder 404 can detect the angle of rotation of the pipeline inspection device about the centerline of the pipeline, so as to accurately locate the defect with high accuracy.
With continued reference to fig. 4. Preferably, the first detection wheel 401 comprises a first rotating disc 4011 and a second rotating disc 4013 which are arranged in parallel and coaxially, the first rotating disc 4011 and the second rotating disc 4013 are both fixed on a rotating shaft, and the rotating shaft is in transmission connection with the first encoder 402; a plurality of first rotating rollers 4012 are arranged at intervals on the edge of the first rotary disk 4011, each first rotating roller 4012 is rotatably connected with the first rotary disk 4011, the axis of the first rotating roller 4012 and the axis of the rotating shaft are positioned in two planes which are perpendicular to each other, so that when the pipeline detecting device rotates around the central line of the pipeline, the first rotating roller 4012 rotates to reduce the friction force between the first rotary disk 4011 and the side wall of the pipeline. Correspondingly, a plurality of second rotating rollers 4014 are arranged at intervals on the edge of the second rotary table 4013, each second rotating roller 4014 is rotatably connected with the second rotary table 4013, the axis of each second rotating roller 4014 and the axis of each rotating shaft are located in two planes which are perpendicular to each other, and each second rotating roller 4014 is located between two adjacent first rotating rollers 4012.
Further preferably, the structure of the second detection wheel 403 is the same as that of the first detection wheel 401, and is not described in detail herein. The first encoder 402 and the second encoder 404 are both ohron encoders.
Specifically, the first detection wheel 401 and the first encoder 402 are both disposed on a first adjustment plate, and a first vertical rail 405 whose central line is perpendicular to the rack 10 is disposed on the first adjustment plate, and correspondingly, a first vertical chute is disposed on the rack 10, and the first vertical rail 405 is inserted into the first vertical chute; and both ends of the first tension spring 406 are respectively connected with the first adjusting plate and the frame 10 bracket, so that the first adjusting plate moves towards the pipeline by the elastic force of the first tension spring 406, and the first detection wheel 401 is always in contact with the side wall of the pipeline, thereby preventing the first detection wheel 401 from being separated from the pipeline due to uneven side wall of the pipeline, and causing poor precision of the position measuring device 40.
Preferably, the second detection wheel 403 and the second encoder 404 are disposed on a second adjusting plate, and a second vertical rail is disposed on the second adjusting plate, a second vertical chute is disposed on the frame 10, and the second vertical rail is slidably disposed in the second vertical chute; and both ends of the second tension spring are respectively connected with the second adjusting plate and the frame 10 to move the second adjusting plate toward the pipe by the elastic force of the second tension spring, thereby enabling the second detection wheel 403 to be always in contact with the side wall of the pipe.
Specifically, the pipeline detection device provided by this embodiment further includes: and the storage battery and the button plate 108, wherein the storage battery is arranged on the frame 10, and the storage battery is electrically connected with the controller and used for supplying power to the controller. The button board 108 is arranged on the rack 10, and a plurality of buttons 1081 are arranged on the button board 108, and the plurality of buttons 1081 are all electrically connected with the controller; accordingly, a plurality of detection modes are stored in the controller, for example: a reciprocating detection mode for controlling the pipeline detection device to reciprocate on the pipeline; or a differential spiral mode for controlling the pipeline detection device to move along a spiral line on the pipeline, and the like; each button 1081 corresponds to a detection mode, and when one button 1081 is touched, the controller operates the detection mode corresponding to the button 1081, thereby detecting the pipeline.
With continued reference to fig. 3. The defect detecting apparatus 50 includes a first detecting magnet 501, a second detecting magnet 502, and a hall element 503, the first detecting magnet 501 and the second detecting magnet 502 being disposed at an interval in the running direction, and the hall element 503 being disposed between the first detecting magnet 501 and the second detecting magnet 502. The first detection magnet 501 and the second detection magnet 502 magnetize the pipeline at the same time, so that the magnetic field in the pipe wall can be increased for detection. Preferably, the first detection magnet 501 and the second detection magnet 502 are both permanent magnets.
The installation process of the pipeline detection device is as follows: first, the first and second traveling frames 101 and 102 are mounted on the frame 10, the first and second driving screws 1031 and 1032 on the driving screw 103 are respectively engaged with the first and second driving nuts, and the locking device 105 is mounted on the frame 10; then, the first driving device 20 and the second driving device 30 are respectively in transmission connection with the magnetic wheels 107 on the first walking frame 101 and the second walking frame 102; then, a first detection wheel 401 and a first encoder 402 are arranged at the front end of the machine frame 10 along the running direction, and a second encoder 404 and a second detection wheel 403 are arranged at the rear end of the machine frame 10 along the running direction; then the controller, the storage battery, the defect detection device 50 and the button plate 108 are respectively installed on the frame 10; finally, the electromagnet, the first driving device 20, the second driving device 30, the first encoder 402, the second encoder 404, the storage battery, the hall element 503 and the button 1081 on the button plate 108 are all electrically connected with the controller.
The use process of the pipeline detection device is as follows: firstly, the rotating device 104 drives the driving screw 103 to rotate, so that the first driving screw 1031 and the second driving screw 1032 respectively drive the first walking frame 101 and the second walking frame 102 to move in opposite directions, and the distance between the first walking frame 101 and the second walking frame 102 is adjusted, so that the wheels on the first walking frame 101 and the second walking frame 102 are attached to the side wall of the detected pipeline; then the controller controls the electromagnet to be electrified so as to lock the driving screw 103; then, a detection mode is selected by touching a button 1081, so that the controller executes a program corresponding to the detection mode, and further controls the first driving device 20 and the second driving device 30 to work so as to drive the pipeline detection device to move on the pipeline; meanwhile, the Hall element 503 detects the pipe wall of the pipeline, when the pipe wall is detected to have defects, the detection signal is input into the controller, in addition, the first detection wheel 401 and/or the second detection wheel 403 rotate, so that the first encoder 402 and/or the second encoder 404 transmit the position of the pipeline where the pipeline detection device is located into the controller in the form of position signal, and the detection signal and the position signal are stored in the coded shape through the storage device in the controller; after the detection program is executed, the detection signals and the position signals in the storage device can be read, and the pipeline positions of the defects are obtained through the corresponding relation between the detection signals and the position signals, so that the subsequent pipeline repair is facilitated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A pipeline inspection device, comprising: the device comprises a rack, a first walking frame, a second walking frame, an adjusting device and a defect detecting device; the first walking frame and the second walking frame are arranged at intervals along a direction perpendicular to the running direction, the second walking frame is connected with the rack, the first walking frame is connected with the rack through the adjusting device, and the adjusting device is used for adjusting the distance between the first walking frame and the second walking frame; a plurality of magnetic wheels are arranged on the first walking frame and the second walking frame at intervals along the running direction; the defect detection device is used for detecting defects on the pipeline;
the adjusting device comprises: a drive screw and a rotating device; the driving screw is rotatably connected with the rack, a first driving thread is arranged on the driving screw, and a first driving nut matched with the first driving thread is arranged on the first travelling frame; the rotating device is in transmission connection with the driving end of the driving screw rod; a sliding rail with the central line perpendicular to the running direction is arranged on the rack, a first sliding groove is arranged on the first walking frame, and the first sliding groove is sleeved on the sliding rail;
an included angle between the first walking frame and the machine frame is an acute angle, and an included angle between the second walking frame and the machine frame is an acute angle;
the pipeline detection device also comprises a controller and a position measurement device, wherein the controller is electrically connected with the defect detection device and the position measurement device respectively; the position measuring device is used for detecting the position of the pipeline;
the position measuring device comprises a first detecting wheel, a second detecting wheel, a first encoder and a second encoder, wherein the first detecting wheel is in transmission connection with the first encoder and is arranged at the front end of the rack along the running direction, and the axis of the first detecting wheel is perpendicular to the running direction; the second detection wheel is in transmission connection with the second encoder and is arranged at the rear end of the rack along the running direction, and the axis of the second detection wheel is arranged in parallel to the running direction; the first encoder and the second encoder are both electrically connected with the controller;
the first detection wheel comprises a first rotary disc, the axis of the first rotary disc is perpendicular to the running direction, a plurality of first rotating rollers are arranged at the edge of the first rotary disc at intervals, each first rotating roller is rotatable and connected with the first rotary disc, and the axis of the first rotating roller is perpendicular to the axis of the first rotary disc, so that the pipeline detection device winds when the central line of the pipeline rotates, the first rotating roller rotates.
2. The pipeline inspection device of claim 1, wherein a second chute is disposed on the second walking frame; the second sliding groove is sleeved on the sliding rail; the driving screw comprises a first section and a second section, the first driving thread is arranged on the first section, the second section is provided with a second driving thread, and the rotating directions of the first driving thread and the second driving thread are opposite; and a second driving nut matched with the second driving thread is arranged on the second walking frame.
3. The pipeline inspection device of claim 2, further comprising a locking device coupled to a braking end of the drive screw for preventing rotation of the drive screw after the distance between the first running carriage and the second running carriage is adjusted.
4. The pipeline inspection device of claim 3, wherein the locking device comprises: the brake comprises an electromagnet, a rotating sheet and a brake sheet; the rotating sheet is in transmission connection with the rear end of the driving screw rod, and the brake sheet is connected with the rack; the electromagnet is arranged on the rack and used for attracting the brake pad.
5. The pipeline inspection device of any one of claims 1-4, further comprising a first drive device drivingly connected to the magnetic wheel on the first carriage.
6. The pipeline inspection device of claim 5, further comprising a second drive device in driving connection with the magnetic wheel on the second walking frame.
7. The pipeline inspection device of any one of claims 1-4, wherein the defect detection device comprises a first inspection magnet, a second inspection magnet, and a Hall element, the first inspection magnet and the second inspection magnet being spaced apart in the direction of travel, the Hall element being disposed between the first inspection magnet and the second inspection magnet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810326156.7A CN108279268B (en) | 2018-04-12 | 2018-04-12 | Pipeline detection device |
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| CN201810326156.7A CN108279268B (en) | 2018-04-12 | 2018-04-12 | Pipeline detection device |
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| CN108279268B true CN108279268B (en) | 2020-11-24 |
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| CN109115882B (en) * | 2018-09-14 | 2024-03-08 | 杭州浙达精益机电技术股份有限公司 | Low-frequency ultrasonic automatic flaw detection device capable of flexibly and adaptively detecting pipeline |
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| CN101358688B (en) * | 2008-09-12 | 2013-01-23 | 东北石油大学 | Magnetic leakage detector out of diameter-variable pipe driven by DC generator |
| CN102590326A (en) * | 2011-10-31 | 2012-07-18 | 北京理工大学 | Magnetic memory/magnetic leakage integrated multi-probe detection device for tube and shaft type parts |
| CN105587809B (en) * | 2015-11-13 | 2023-08-04 | 深圳市威捷机电股份公司 | Electromagnetic braking device of power shaft |
| CN105967062A (en) * | 2016-07-18 | 2016-09-28 | 河南省重业起重机有限公司 | Crane traveling trolley with adjustable traveling distance |
| CN107632063B (en) * | 2017-08-22 | 2020-11-24 | 华中科技大学 | Magnetic flux leakage detection device for outer wall of variable-diameter pipe |
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