A new type of digital ray detection mechanism for pipelines

Abstract

The present invention relates to the technical field of pipeline digital ray detection, and provides a novel digital ray detection mechanism for pipelines, which includes a main detection device body; a digital detection component connected to the main detection device body; two magnetic wheels, which are respectively arranged on both sides of the digital detection component; wherein, the digital detection component includes an imaging plate; an aluminum plate arranged on one side of the imaging plate; and a heat dissipation shell arranged on the other side of the imaging plate, and an embedding groove is arranged on the heat dissipation shell, and the imaging plate is embedded in the embedding groove; through the above technical solution, the problem of inconvenient use and storage when using a film for ray detection in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline digital ray detection, and specifically, to a novel digital ray detection mechanism for pipelines. Background Art

[0002] Currently, in the non-destructive testing of butt girth welds of long-distance oil and gas pipelines, X-ray detection still mainly uses ordinary film detection. When using film to detect pipelines in the prior art, the following problems are found:

[0003] 1. When using film detection, real-time images cannot be seen on-site, and due to environmental and personnel operation reasons, many unqualified negatives appear, requiring re-shooting, and the shooting volume is large;

[0004] 2. The film developing conditions are strictly required, and a special film developing room needs to be equipped. Moreover, waste liquid is generated during the film developing process, polluting the environment;

[0005] 3. The storage requirements for film are strict. For the preservation of data, with the advent of the digital age and the establishment of network platforms, scanning and uploading of film are also required, resulting in waste of personnel and time;

[0006] 4. Film detection has strong requirements for the on-site environmental temperature. The pipeline needs to be heated or cooled to a specified temperature range after being shut down to avoid affecting film detection. However, the time required for heating and cooling is long, inconvenient, and will affect the service life of the pipeline;

[0007] There are also some non-film ray detection devices used for pipeline detection, but they are inconvenient to use, and the following problems are found:

[0008] 1. Existing ray detection devices need to be externally connected with very long control cables to provide power and control signals for the ray detection devices, and the operation is very inconvenient. Some ray detection devices use wireless control and wireless data transmission, but still need a very large power supply box to transmit power through cables. During on-site detection, a relatively large power supply box needs to be carried, and the labor intensity of personnel is high;

[0009] 2. Existing ray detection devices fix the detection device to the pipeline for single-point position detection. If other positions need to be detected, it is necessary to manually remove and replace the position and then fasten it again, which is very inconvenient. Summary of the Invention

[0010] The present invention provides a novel digital ray detection mechanism for pipelines, which solves the problems of inconvenience in use and storage when using film for ray detection in related technologies.

[0011] The technical solution of the present invention is as follows:

[0012] A new type of digital ray detection mechanism for pipelines, comprising

[0013] A detection device main body;

[0014] A digital detection component, connected to the detection device main body through a first connection block;

[0015] Two magnetic wheels, which are respectively arranged on both sides of the digital detection component;

[0016] Among them, the digital detection component includes

[0017] An imaging plate;

[0018] An aluminum plate, arranged on one side of the imaging plate; and

[0019] A heat dissipation shell, arranged on the other side of the imaging plate, and an embedding groove is arranged on the heat dissipation shell, and the imaging plate is embedded in the embedding groove.

[0020] As a further technical solution, a temperature adjustment unit is arranged on the heat dissipation shell for adjusting the temperature of the new ray detection mechanism, and the temperature adjustment unit includes

[0021] A heating element, which is of a cylindrical structure and is arranged in the middle of the heat dissipation shell;

[0022] A semiconductor refrigeration sheet, arranged on the heat dissipation shell, and there are several of them, and several semiconductor refrigeration sheets are circumferentially located outside the heating element; and

[0023] Two temperature sensors.

[0024] As a further technical solution, the detection device main body includes

[0025] A lower shell and an upper cover plate, the upper cover plate and the lower shell are buckled and then connected by screws, the lower shell has a shell bin, and the lower shell and the upper cover plate are fastened on the heat dissipation shell;

[0026] A lithium battery pack, arranged on the lower shell and located in the shell bin;

[0027] A motion control board, fastened and connected to the upper cover plate and located in the shell bin;

[0028] A battery management system board, arranged between the motion control board and the upper cover plate; and

[0029] A computer main control board, arranged in the lower shell for controlling the working and non-working states of the detection device main body.

[0030] As a further technical solution, the detection device main body further includes

[0031] The battery of the battery management system board is arranged on the upper cover plate. The battery of the battery management system board is connected to the battery management system board and is used to supply power to the battery management system board;

[0032] The motor driver board is arranged between the motion control board and the upper cover plate and is beside the battery management system board;

[0033] A plurality of connectors are provided. A plurality of the connectors penetrate through the side wall of the lower housing; and

[0034] The fan is arranged on the lower housing and is on one side of the lithium battery pack.

[0035] As a further technical solution, a plurality of heat dissipation fins are arranged on the heat dissipation shell, and a card slot is arranged on the lower housing. A plurality of the card slots are provided, and a plurality of the card slots are in clamping fit with a plurality of the heat dissipation fins.

[0036] As a further technical solution, the two magnetic wheels are respectively an encoder wheel and a motor wheel, and the motor wheel is the driving wheel and the encoder wheel is the driven wheel;

[0037] The encoder wheel is fixedly connected to the heat dissipation shell through a fixed connection assembly;

[0038] The motor wheel is swingably connected to the heat dissipation shell through a self-aligning mechanism.

[0039] As a further technical solution, the magnetic wheel includes

[0040] Two wheel end covers are arranged in parallel. The wheel end covers are in an annular structure;

[0041] The shaft sleeve is fixedly arranged between the two wheel end covers. The shaft sleeve has a strong magnetic hole, a fixing hole and a groove, and the fixing hole coincides with the center line of the shaft sleeve;

[0042] The strong magnetic part is located in the strong magnetic hole. The strong magnetic part is in a circular structure, and the axis of the strong magnetic part is perpendicular to the axis of the wheel end cover;

[0043] The magnetic conduction sleeve is arranged on the shaft sleeve and is on one side of the groove; and

[0044] The outer strengthening magnet is fixedly arranged on the magnetic conduction sleeve, and the outer strengthening magnet is located in the groove. A through hole is arranged between the magnetic conduction sleeve and the outer strengthening magnet.

[0045] As a further technical solution, the magnetic wheel further includes

[0046] The first sleeve is integrally provided on the bushing, and the axis of the first sleeve coincides with the axis of the fixing hole. The first sleeve is located on the side of the groove, and the first sleeve extends into the through hole.

[0047] The guide sleeve is disposed through the through holes of the magnetic conductive sleeve and the outer reinforcing magnet, and the outer reinforcing magnet has a polygonal structure.

[0048] The fastening screw is disposed in the guide sleeve and the first sleeve.

[0049] As a further technical solution, the magnetic wheel further includes

[0050] A ratchet wheel is rotatably disposed on one side of the bushing. The ratchet wheel and the first sleeve are respectively located on both sides of the bushing, and the ratchet wheel is coaxially disposed with the fixing hole.

[0051] A pawl is rotatably disposed on the bushing and is located beside the ratchet wheel.

[0052] An adjusting screw fixedly connects the ratchet wheel and the strong magnetic member. Thread locking agent is provided at the contact positions of the adjusting screw, the ratchet wheel and the strong magnetic member.

[0053] As a further technical solution, the magnetic wheel further includes

[0054] A spring connects the pawl and the bushing. The pawl is located between the spring and the ratchet wheel. A stop rod is further provided on the pawl. The stop rod is perpendicular to the pawl and the stop rod extends into the wheel end cover.

[0055] The encoder wheel further includes an encoder. The encoder is coaxial with the encoder wheel, and the encoder is connected to the fixed connection assembly through an encoder support.

[0056] The motor wheel further includes a motor and a speed reducer. The motor is connected to the speed reducer and is disposed on the self-aligning mechanism, and the speed reducer is coaxially connected to the wheel end cover.

[0057] As a further technical solution, both the self-aligning mechanism and the fixed connection assembly include

[0058] A fixing block for connecting the detection device main body and the magnetic wheel.

[0059] A magnetic wheel bracket fixedly connects the fixing block, and the magnetic wheel is rotatably disposed on the magnetic wheel bracket.

[0060] As a further technical solution, an angle fixing block is further provided between the magnetic wheel bracket and the fixing block. The cross section of the angle fixing block is a broken line structure, and the included angle of the angle fixing block is 110° - 150°.

[0061] As a further technical solution, the axle of the magnetic wheel is connected to the magnetic wheel bracket through a side plate bracket.

[0062] As a further technical solution, the self-aligning mechanism further includes an adjustable magnetic wheel connecting block disposed between the fixed block and the magnetic wheel bracket. The adjustable magnetic wheel connecting block is provided with a jack, into which the fixed block is inserted, and the fixed block and the adjustable magnetic wheel connecting block are connected in a swaying manner through a set screw and an adjusting pin shaft.

[0063] As a further technical solution, a protruding insertion block is provided on the fixed block of the self-aligning mechanism, and the insertion block is inserted into the jack.

[0064] As a further technical solution, the width of the jack is greater than the width of the insertion block. The adjusting pin shaft has a threaded portion and an adjusting portion, and the adjusting portion is a tapered structure with a gradually changing diameter.

[0065] As a further technical solution, the axial direction of the jack is perpendicular to the axial directions of the set screw and the adjusting pin shaft.

[0066] The working principle and beneficial effects of the present invention are as follows:

[0067] 1. In the present invention, DR detection is applied to pipeline detection. The magnetic wheel is adsorbed on the pipeline without the need for fastening. Installation and disassembly can be completed by relying on the change in the strength of the magnetism of the magnetic wheel (presence or absence of magnetism), and the operation is simple. Compared with the complex process of the prior art in which the ray detection device is fixed again after detecting a single position and then reselecting a point for fixation and detecting again, the digital ray detection structure of the present invention can adjust the digital ray detection mechanism to detect along a path through the rotation of the magnetic wheel, which is very convenient.

[0068] 2. After the detection device main body receives the image information of the imaging plate, the influence information is converted and stored in the detection device main body, and the obtained data is directly digital data, which can be directly uploaded to the data platform to meet the requirements of digital storage and analysis.

[0069] 3. To ensure that the imaging plate is at a constant temperature during operation; the temperature sensor can detect the operating temperature of the new digital ray detection mechanism in real time. When the operating temperature of the new digital ray detection mechanism is lower than the stable operating temperature (when the temperature is lower than 18°C), the heating element automatically starts and preheats the digital detection component as a whole; when the temperature of the new digital ray detection mechanism is higher than the stable operating temperature (when the temperature is higher than 28°C), the semiconductor refrigeration sheet starts to work, reducing the equipment temperature to the stable operating temperature, so that the temperature of the new digital ray detection mechanism is always maintained at 23 ± 5°C. The temperature of the pipeline can be its normal temperature, without adjusting the temperature of the pipeline, which will not cause any damage to the pipeline. At the same time, it ensures the operating temperature (use temperature) of the new digital ray detection mechanism, avoiding the shortening of the service life or the error of the detection result caused by the influence of temperature on the new digital ray detection mechanism, and ensuring the accuracy of imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0071] Figure 1 Structural schematic diagram of the present invention;

[0072] Figure 2 Exploded structural schematic diagram of the digital detection component of the present invention;

[0073] Figure 3 Structural schematic diagram of the main body of the detection equipment of the present invention;

[0074] Figure 4 Structural schematic diagram of the lower housing and its interior of the present invention;

[0075] Figure 5 Structural schematic diagram of the upper cover plate of the present invention;

[0076] Figure 6 Partial exploded structural schematic diagram of the magnetic wheel structure of the present invention;

[0077] Figure 7 Partial exploded structural schematic diagram of the magnetic wheel structure from another angle of the present invention;

[0078] Figure 8 Exploded structural schematic diagram of the magnetic wheel without the wheel end cover (referred to as the wheel core) of the present invention;

[0079] Figure 9 Front view of the magnetic wheel without the wheel end cover (referred to as the wheel core) of the present invention;

[0080] Figure 10 For the present invention Figure 9 Sectional view taken along line A-A;

[0081] Figure 11Schematic diagram of the encoder wheel and fixed connection assembly of the present invention;

[0082] Figure 12 Schematic diagram of the motor wheel and self-aligning mechanism of the present invention;

[0083] In the figure: 100, main body of the detection device; 101, first connection block; 110, lower shell; 111, shell bin; 112, lithium battery pack; 113, fan; 114, card slot; 115, computer main control board; 116, connector; 120, upper cover plate; 121, battery management system board battery; 122, motor driver board; 123, motion control board; 124, battery management system board;

[0084] 200, magnetic wheel; 201, wheel end cover; 202, bushing; 2021, strong magnetic hole; 2022, fixing hole; 2023, groove; 2024, first sleeve; 203, strong magnetic part; 204, magnetic conduction sleeve; 205, external strong magnet; 2051, through hole; 206, guide sleeve; 207-1, fastening screw; 207-2, adjusting screw; 208, ratchet; 209, ratchet pawl; 2091, spring; 2092, stop rod; 210, encoder wheel; 211, encoder; 212, encoder support; 220, motor wheel; 221, motor; 222, reducer; 230, fixed connection assembly; 240, self-aligning mechanism; 30, fixed block; 31, insert block; 40, magnetic wheel support; 50, magnetic wheel adjustable connection block; 51, jack; 60, set screw; 70, adjusting pin shaft; 71, adjusting part; 80, angle fixing block; 90, side plate support.

[0085] 300, digital detection component; 310, imaging plate; 320, aluminum plate; 330, heat dissipation shell; 331, heat sink; 340, temperature adjustment unit; 341, heating element; 342, semiconductor refrigeration sheet. Detailed implementation manners

[0086] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0087] Embodiment 1

[0088] As Figures 1 to 12 shown, this embodiment proposes a new type of digital ray detection mechanism for pipelines, including

[0089] main body of the detection device 100;

[0090] The digital detection component 300 is connected to the detection device main body 100 through the first connection block 101;

[0091] There are two magnetic wheels 200, and the two magnetic wheels 200 are respectively arranged on both sides of the digital detection component 300;

[0092] Wherein, the digital detection component 300 includes

[0093] An imaging plate 310;

[0094] An aluminum plate 320 is arranged on one side of the imaging plate 310; and

[0095] A heat dissipation shell 330 is arranged on the other side of the imaging plate 310. An embedding groove is arranged on the heat dissipation shell 330, and the imaging plate 310 is embedded in the embedding groove.

[0096] In this embodiment, in order to solve the problems of inconvenience in use and storage when using film for ray detection, a new type of digital ray detection mechanism for pipelines is designed. The DR detection is applied to pipeline detection. The magnetic wheels 200 are adsorbed on the pipeline without the need for fastening and fixing. Installation and disassembly can be completed depending on the change in the strength of the magnetism of the magnetic wheels 200 (presence or absence of magnetism), and the operation is simple; compared with the complex process of the existing ray detection equipment that after single-position detection, the equipment is removed and re-positioned for fixation and then detected again, this digital ray detection structure can adjust the digital ray detection mechanism to detect along a path through the rotation of the magnetic wheels 200, which is very convenient. The computer controls the ray detection mechanism through a wireless network. After the detection device main body 100 receives the image information of the imaging plate 310, the influence information is converted and stored in the detection device main body 100. The thickness of the aluminum plate 320 is 1 mm. When digital rays penetrate the pipeline metal to be inspected, due to the absorption and scattering of rays by atoms, the intensity of the rays is weakened. The greater the material thickness, the more the intensity is weakened; if the rays encounter various defects inside the material during penetration, such as pores, slag inclusions, cracks, etc., since the attenuation of these defects to rays is much smaller than that of the adjacent dense metal, different blackness images will appear on the photographic negative or fluorescent screen, and thus the nature and size of the defects can be judged. The aluminum plate 320 is a pure aluminum plate with a dense interior and will not affect the ray detection of the pipeline. At the same time, the aluminum plate 320 fixes the imaging plate 310 in the embedding groove of the heat dissipation shell 330 and locks it with screws; the imaging plate is a carrier made of a barium fluorobromide crystal containing a trace element europium that can collect (record) image information, can replace the X-ray film and be reused 20,000 to 30,000 times, with a long service life. An 8-core connector is arranged on the first connection block 101, and the imaging plate 310 is connected to the detection device main body 100 through a connecting wire for imaging control.

[0097] Such asFigures 1 to 5 As shown, a temperature adjustment unit 340 is provided on the heat dissipation shell 330 for adjusting the temperature of the new ray detection mechanism. The temperature adjustment unit 340 includes

[0098] a heating element 341, which is of a cylindrical structure and is provided in the middle of the heat dissipation shell 330;

[0099] a thermoelectric cooler 342, which is provided on the heat dissipation shell 330 and there are several of them. The several thermoelectric coolers 342 are circumferentially located outside the heating element 341; and

[0100] two temperature sensors.

[0101] In this embodiment, in order to ensure the stable working environment of the imaging plate 310 and keep it in a constant temperature state, a temperature adjustment unit 340 is provided on the heat dissipation shell 330. According to the actual on-site use environment, the on-site ambient temperature is (-30)°C to +(50)°C. To ensure that the imaging plate 310 is in a constant temperature state during operation; the temperature sensors can detect the working temperature of the new digital ray detection mechanism in real time. When the working temperature of the new digital ray detection mechanism is lower than the stable working temperature (when the temperature is lower than 18°C), the heating element 341 is automatically started and the digital detection component 300 is heated and preheated as a whole; when the temperature of the new digital ray detection mechanism is higher than the stable working temperature (when the temperature is higher than 28°C), the thermoelectric cooler 342 starts to work to reduce the equipment temperature to the stable working temperature, so that the temperature of the new digital ray detection mechanism is always maintained at 23±5°C.

[0102] As Figures 1 to 5 shown, the detection device main body 100 includes

[0103] a lower shell 110 and an upper cover plate 120. After the upper cover plate 120 is buckled with the lower shell 110, they are connected by screws. The lower shell 110 has a shell bin 111, and the lower shell 110 and the upper cover plate 120 are fastened to the heat dissipation shell 330;

[0104] a lithium battery pack 112, which is provided on the lower shell 110 and is located in the shell bin 111;

[0105] a motion control board 123, which is firmly connected to the upper cover plate 120 and is located in the shell bin 111;

[0106] a battery management system board 124, which is provided between the motion control board 123 and the upper cover plate 120; and

[0107] a computer main control board 115, which is provided in the lower shell 110 and is used to control the working and non-working states of the detection device main body 100.

[0108] In this embodiment, the lithium battery pack 112 is installed in the lower housing 110. The lower housing 110 has an opening for installing or replacing the lithium battery pack 112. After the lithium battery pack 112 is installed, the battery end cover is buckled, and the high-headed knurled screw is tightened. The detection device main body 100 of the ray detection mechanism is self-powered and has a motion control circuit, a built-in PC computer, and is connected to the imaging plate 310. To optimize the resolution of the image, the pipeline circumference is divided into several segments, and the static single-shot segmented radiography method is adopted. After the photographing is completed, it is immediately stored in the computer main control board 115 of the PC computer of the detection device main body 100; the obtained data is directly digital data, which can be directly uploaded to the data platform to meet the requirements of digital storage and analysis; the motor driver board 122, the motion control board 123, and the computer main control board 115 are interconnected to control the movement of the entire device; the lower housing 110 is also provided with a power display screen and an antenna. The antenna is used to receive wireless signals, and the power display screen is used to display the remaining power of the lithium battery pack 112. The upper cover plate 120 is also provided with common operation buttons and display lights such as an emergency stop switch, a 24v indicator light, a 48v indicator light, and a reset switch. The lithium battery pack 112 provides electrical energy for each component, such as motors, GPS positioning modules, and power display screens.

[0109] As Figures 1 to 5 shown, the detection device main body 100 further includes

[0110] a battery management system board battery 121, which is arranged on the upper cover plate 120 and is connected to the battery management system board 124 to supply power to the battery management system board 124;

[0111] a motor driver board 122, which is arranged between the motion control board 123 and the upper cover plate 120 and is beside the battery management system board 124;

[0112] a plurality of connectors 116, which are arranged in the side wall of the lower housing 110 in a penetrating manner; and

[0113] a fan 113, which is arranged on the lower housing 110 and is on one side of the lithium battery pack 112.

[0114] In this embodiment, a number of connectors 116 are provided. The number of connectors 116 includes various models such as 2-core connectors, 4-core connectors, 6-core connectors, 8-core connectors, and 16-core connectors, which are used to connect different connectors / wires for different functional connections. For example, information is transmitted in a wired manner to control the digital detection component 300 to collect data and transmit it back to the computer main control board 115 on the upper cover plate 120 for data storage and analysis. During assembly, first, the motor driver board 122 and the battery management system board 124 are fixed to the upper cover plate 120 with screws. Finally, the motion control board 123 is fixed to the upper cover plate 120. Attention should be paid to the assembly order when assembling several circuit boards. The battery management system board 124 supplies power to the PC computer (computer main control board 115) alone, and the battery 121 of the battery management system board supplies power to the battery management system board 124, so that when the new digital ray detection mechanism is powered off for other reasons, the computer main control board 115 remains in the working state to avoid data loss. The fan 113 cools the lithium battery pack 112, etc., to ensure the overall operation of the device.

[0115] As Figures 1 to 5 shown, a number of heat dissipation fins 331 are arranged on the heat dissipation shell 330, and a number of card slots 114 are provided on the lower housing 110. The number of card slots 114 is several, and the number of card slots 114 is in snap-fit connection with the number of heat dissipation fins 331.

[0116] In this embodiment, in order to ensure that the temperature of the digital detection component 300 is appropriate, a number of heat dissipation fins 331 are arranged on the heat dissipation shell 330 for heat dissipation of the device. A number of card slots 114 on the bottom surface of the lower housing 110 are snap-fitted and installed with each heat dissipation fin, making the connection between the two more stable, and then tightened with screws. A few screws can assemble and integrate the detection device main body 100 and the digital detection component 300, with strong structural applicability and practicability.

[0117] As Figures 1 to 12 shown, the two magnetic wheels 200 are respectively an encoder wheel 210 and a motor wheel 220, and the motor wheel 220 is the driving wheel, and the encoder wheel 210 is the driven wheel;

[0118] The encoder wheel 210 is fixedly connected to the heat dissipation shell 330 through a fixed connection component 230;

[0119] The motor wheel 220 is swingably connected to the heat dissipation shell 330 through a self-aligning mechanism 240.

[0120] In this embodiment, in order to ensure the normal movement of the device, the magnetism of the magnetic wheels 200 on both sides of the digital detection component 300 can be adjusted to control the strength, and one is an encoder wheel 210 and the other is a motor wheel 220. The motor wheel 220 is the power source of the entire device.

[0121] As shown Figures 6 to 10 in the figure, both the encoder wheel 210 and the motor wheel 220 include

[0122] two wheel end caps 201 arranged in parallel. The wheel end caps 201 are of an annular structure;

[0123] a bushing 202 fixedly arranged between the two wheel end caps 201. The bushing 202 has a strong magnetic hole 2021, a fixing hole 2022 and a groove 2023. The fixing hole 2022 coincides with the center line of the bushing 202;

[0124] a strong magnetic part 203. The strong magnetic part 203 is located in the strong magnetic hole 2021. The strong magnetic part 203 is of a circular structure. The axis of the strong magnetic part 203 is perpendicular to the axis of the wheel end cap 201;

[0125] a magnetic conducting sleeve 204 arranged on the bushing 202 and located on one side of the groove 2023; and

[0126] an external strengthening magnet 205 fixedly arranged on the magnetic conducting sleeve 204. The external strengthening magnet 205 is located in the groove 2023. A through hole 2051 is arranged between the magnetic conducting sleeve 204 and the external strengthening magnet 205.

[0127] In this embodiment, in order to adjust the change of the magnetic strength of the magnetic wheel 200 (encoder wheel 210 and motor wheel 220), the strong magnetic part 203 is rotatably arranged in the strong magnetic hole 2021 of the bushing 202, and the external strengthening magnet 205 is fixed between the magnetic conducting sleeve 204 and the bushing 202 and is located in the groove 2023. The external strengthening magnet 205 cannot rotate. The wheel end caps 201 are buckled and connected to both ends of the bushing 202. When the magnetic pole directions of the forcedly rotated strong magnetic part 203 and the external strengthening magnet 205 are the same, the magnetic wheel 200 shows the maximum magnetism externally; when there is no forced force, due to the same-direction attraction effect, the strong magnetic part 203 rotates 180°, rotates to a position where the magnetic pole direction is opposite to that of the external strengthening magnet 205, and the strong magnetic part 203 and the external strengthening magnet 205 are magnetically conducted through the two wheel end caps 201, and the magnetic wheel 200 does not show magnetism externally.

[0128] As shown Figures 6 to 10 in the figure, the encoder wheel 210 and the motor wheel 220 further include

[0129] a first sleeve 2024 integrally arranged on the bushing 202. The first sleeve 2024 coincides with the axis of the fixing hole 2022. The first sleeve 2024 is located on the side of the groove 2023, and the first sleeve 2024 extends into the through hole 2051;

[0130] The guide sleeve 206 is disposed through the through hole 2051 of the magnetic conduction sleeve 204 and the outer strengthening magnet 205, and the outer strengthening magnet 205 is of a polygonal structure;

[0131] The fastening screw 207-1 is disposed within the guide sleeve 206 and the first sleeve 2024.

[0132] In this embodiment, in order to ensure that the outer strengthening magnet 205 does not rotate, the strong magnetic member 203 can be forcibly rotated. The outer strengthening magnet 205 is set as a polygon, and the strong magnetic member 203 is circular. Also, in order to ensure the compactness of the overall structure and reduce the volume of the magnetic wheel, a first sleeve 2024 is protrudingly provided at one end of the bushing 202. The first sleeve 2024 extends into the through hole 2051 of the outer strengthening magnet 205, and then the outer strengthening magnet 205, the magnetic conduction sleeve 204 and the bushing 202 are fastened into a whole through the fastening screw 207-1 and the guide sleeve 206, making the overall structure compact, fastening the outer strengthening magnet 205 and preventing it from rotating.

[0133] As Figures 6 to 10 shown, the encoder wheel 210 and the motor wheel 220 further include

[0134] A ratchet wheel 208 is rotatably disposed on one side of the bushing 202. The ratchet wheel 208 and the first sleeve 2024 are respectively located on both sides of the bushing 202, and the ratchet wheel 208 is coaxially disposed with the fixing hole 2022;

[0135] A pawl 209 is rotatably disposed on the bushing 202 and is located beside the ratchet wheel 208;

[0136] An adjusting screw 207-2 fixedly connects the ratchet wheel 208 and the strong magnetic member 203, and a thread locking agent is provided at the contact positions of the adjusting screw 207-2 with the ratchet wheel 208 and the strong magnetic member 203.

[0137] In this embodiment, in order to prevent the strong magnetic member 203 from rotating back under the action of magnetic force after being forcibly rotated by a certain angle, a ratchet wheel 208 is disposed on one side of the bushing 202. The ratchet wheel 208 and the strong magnetic member 203 are fixedly connected through the adjusting screw 207-2, and a thread locking agent is applied at the connection to lock them into a whole. When positioning the device to a specified position on the pipeline, only a special non-magnetic hexagon wrench is needed to rotate the adjusting screw 207-2 until the magnetic pole directions of the strong magnetic member 203 and the outer strengthening magnet 205 are the same, and the magnetic wheel 200 shows the maximum external magnetism. When quickly removing the device from the pipeline, only the pawl 209 needs to be toggled by hand to make the pawl 209 leave the ratchet groove of the ratchet wheel 208. The strong magnetic member 203 automatically returns to the position where the magnetic poles of the two are opposite under the magnetic force of the outer strengthening magnet 205, and the magnetic wheel 200 is in a non-magnetic state, and the device can be removed.

[0138] As shown Figures 1 to 12 in the figure, the encoder wheel 210 and the motor wheel 220 both further include

[0139] a spring 2091 connecting the pawl 209 and the bushing 202, the pawl 209 being located between the spring 2091 and the ratchet wheel 208; a stop lever 2092 is further provided on the pawl 209, the stop lever 2092 is perpendicular to the pawl 209 and the stop lever 2092 extends into the wheel end cover 201;

[0140] the encoder wheel 210 further includes an encoder 211, the encoder 211 is coaxial with the encoder wheel 210, and the encoder 211 is connected to the fixed connection assembly 230 through an encoder support 212;

[0141] the motor wheel 220 further includes a motor 221 and a speed reducer 222, the motor 221 and the speed reducer 222 are connected and arranged on the self-aligning mechanism 240, and the speed reducer 222 is coaxially connected to the wheel end cover 201.

[0142] In this embodiment, in order to further ensure that the strong magnetic member 203 does not rotate, a spring 2091 is further provided between the pawl 209 and the bushing 202 to provide a force for the pawl 209 to prevent the rotation of the strong magnetic member 203; and an encoder 211 is coaxially arranged on one side of a wheel end cover 201 through a coupling for the encoder wheel 210 to view the deflection amount of the monitoring device (magnetic wheel 200), etc., and a motor 221 and a speed reducer 222 are arranged at one end of the motor wheel 220 to provide power for the whole device to ensure the movement of the device for completing the detection.

[0143] As Figures 11 to 12 shown in the figure, the self-aligning mechanism 240 and the fixed connection assembly 230 both include

[0144] a fixing block 30 for connecting the detection device main body 100 and the magnetic wheel 200;

[0145] a magnetic wheel support 40 fixedly connecting the fixing block 30, and the magnetic wheel 200 is rotatably arranged on the magnetic wheel support 40.

[0146] In this embodiment, in order to ensure the connection between the magnetic wheel 200 and the detection device main body 100, screw connection is carried out through the fixing block 30 and the magnetic wheel support 40, which is simple in assembly, convenient in operation and can be quickly assembled.

[0147] As Figures 1 to 12 shown in the figure, an angle fixing block 80 is further provided between the magnetic wheel support 40 and the fixing block 30, the cross section of the angle fixing block 80 is a broken line structure, and the included angle of the angle fixing block 80 is 110° - 150°.

[0148] In this embodiment, both the self-aligning mechanism 240 and the fixed connection assembly 230 further include an angle fixing block 80. In order to ensure that there is a certain gap between the detection device main body 100 and the pipeline and to ensure the effect of ray detection imaging, an angle fixing block 80 with a folded line structure is provided between the magnetic wheel bracket 40 and the fixing block 30, so that an arch structure is formed between the magnetic wheel bracket 40 of the magnetic wheel 200 and the ray emitting surface of the detection device main body 100. After the two groups of magnetic wheels 200 are attached to the pipeline, it is ensured that the detection device main body 100 does not collide and interfere with the pipeline, ensuring the detection efficiency and the use effect of the device. When detecting pipelines with different diameters, it is only necessary to replace the angle fixing block 80 with a different angle.

[0149] As Figures 1 to 12 shown, the axle of the magnetic wheel 200 is connected to the magnetic wheel bracket 40 through a side plate bracket 90.

[0150] In this embodiment, in order to make the disassembly of the magnetic wheel 200 more convenient, when the magnetic wheel 200 is installed on the side plate bracket 90, one end of the angle fixing block 80 is locked and fixed to the fixing block 30 by screws, and the other end is locked and fixed to the magnetic wheel bracket 40 by screws. Then, the combination of the side plate bracket 90 and the magnetic wheel 200 is fastened to the magnetic wheel bracket 40 by screws, and the fixing block 30 is first fastened to the detection device main body 100 by screws.

[0151] As Figures 11 to 12 shown, the self-aligning mechanism further includes a magnetic wheel adjustable connection block 50, which is arranged between the fixing block 30 and the magnetic wheel bracket 40. A jack 51 is provided on the magnetic wheel adjustable connection block 50, and the fixing block 30 is inserted into the jack 51. The fixing block 30 and the magnetic wheel adjustable connection block 50 are connected in a swaying manner through a set screw 60 and an adjusting pin 70.

[0152] In this embodiment, in order to ensure the accurate final position of the detection device main body 100 and reduce the offset, the self-aligning mechanism further includes a dowel screw 60 and an adjusting pin 70, so that the magnetic wheel adjustable connecting block 50 is connected to the fixed block 30 in a swaying manner. The fixed block 30 is firmly connected to the detection device main body 100. When the detection device main body 100 is working normally on a pipeline (metal pipeline), due to the magnetism of the magnetic wheel 200, the magnetic wheel 200 as the driving wheel and the magnetic wheel 200 as the driven wheel will continuously tend to be parallel to each other. However, due to the placement of the detection device main body 100 or other reasons, there will be an angular deviation between the two groups of magnetic wheels 200. At this time, the magnetic wheel adjustable connecting block 50 and the fixed block 30 will sway due to this deviation, and gradually adjust the deviation size during the continuous operation of the device. Finally, a relatively stable equilibrium state is maintained between the magnetic wheel 200 as the driving wheel and the magnetic wheel 200 as the driven wheel. This self-aligning mechanism 240 is only assembled at the magnetic wheel 200 as the driving wheel. The magnetic wheel 200 (encoder wheel 210) as the driven wheel still uses the rigid connection of the fixed connection assembly 230, and the magnetic wheel 200 (motor wheel 220) as the driving wheel uses a flexible connection, so that the overall detection device maintains a small offset on the pipeline.

[0153] As Figures 11 to 12 shown, a protruding insertion block 31 is provided on the fixed block 30, and the insertion block 31 is inserted into the insertion hole 51.

[0154] In this embodiment, in order to ensure the swaying connection between the fixed block 30 and the magnetic wheel adjustable connecting block 50, the protruding insertion block 31 on the fixed block 30 is inserted into the insertion hole 51 on the magnetic wheel adjustable connecting block 50, and then the adjusting pin 70 is inserted to a certain depth, and then the dowel screw 60 is tightened, so that the fixed block 30 and the magnetic wheel adjustable connecting block 50 are connected into a whole. Screw-tightening the adjusting pin 70 inserted to different depths can finely adjust the swaying amplitude between the fixed block 30 and the magnetic wheel adjustable connecting block 50. Finally, the insertion block 31 on the fixed block 30 is inserted into the insertion hole 51 of the magnetic wheel adjustable connecting block 50 and is swayingly connected through the dowel screw 60 and the adjusting pin 70.

[0155] As Figures 11 to 12 shown, the width of the insertion hole 51 is greater than the width of the insertion block 31. The adjusting pin 70 has a threaded portion and an adjusting portion 71, and the adjusting portion 71 is a tapered structure with a gradually changing diameter.

[0156] In this embodiment, in order to ensure the fine adjustment of the shaking amplitude, the adjusting part 71 of the adjusting pin shaft 70 is set as a conical structure, with the smallest diameter at the end close to the threaded part and the largest diameter at the end close to the nut. After the adjusting part 71 is in the jack 51, since the diameters at different height positions of the adjusting part 71 are different, when it is screwed to different depths in the jack 51, the width of the jack 51 is changed, that is, the shaking amplitude between the fixed block 30 and the magnetic wheel adjustable connecting block 50 is adjusted. The width of the jack 51 is equal to the sum of the width of the fixed block and the maximum diameters of the two adjusting parts 71. For large-diameter pipelines, the equipment does not have to stop running midway to adjust the direction, and the equipment will adjust itself to make the two groups of magnetic wheels 200 tangent to the pipeline to ensure the ray detection effect.

[0157] As Figures 11 to 12 shown, the axial direction of the jack 51 is perpendicular to the axial directions of the dowel screw 60 and the adjusting pin shaft 70.

[0158] In this embodiment, in order to ensure the connection between the fixed block 30 and the jack 51, mounting holes are also vertically provided on the side surface of the jack 51 for the dowel screw 60 and the two adjusting pin shafts 70 to pass through. The adjusting pin shaft 70 is located in the jack 51 and on both sides of the fixed block 30. After the dowel screw 60 is screwed, it is tightened with the threaded hole on the fixed block 30, so that the fixed block 30 and the magnetic wheel adjustable connecting block 50 are tightened, and shaking adjustment is performed in the width direction of the jack 51 under the action of the subsequent magnetic wheel 200.

[0159] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel digital ray detection mechanism for pipelines, characterized in that, Comprising A detection device main body (100); A digital detection component (300), connected to the detection device main body (100); Two magnetic wheels (200), which are respectively arranged on both sides of the digital detection component (300); Wherein, the digital detection component (300) comprises An imaging plate (310); An aluminum plate (320), arranged on one side of the imaging plate (310); A heat dissipation shell (330), arranged on the other side of the imaging plate (310), an embedding groove is arranged on the heat dissipation shell (330), and the imaging plate (310) is embedded in the embedding groove; The two magnetic wheels (200) are respectively an encoder wheel (210) and a motor wheel (220), and the motor wheel (220) is a driving wheel, and the encoder wheel (210) is a driven wheel; The encoder wheel (210) is firmly connected to the heat dissipation shell (330) through a fixed connection component (230); The motor wheel (220) is swingably connected to the heat dissipation shell (330) through a self-aligning mechanism (240); Both the self-aligning mechanism (240) and the fixed connection component (230) comprise A fixed block (30), used for connecting the detection device main body (100) and the magnetic wheel (200); A magnetic wheel bracket (40), fixedly connecting the fixed block (30), and the magnetic wheel (200) is rotatably arranged on the magnetic wheel bracket (40); The self-aligning mechanism further comprises a magnetic wheel adjustable connection block (50), arranged between the fixed block (30) and the magnetic wheel bracket (40), a jack (51) is arranged on the magnetic wheel adjustable connection block (50), the fixed block (30) is inserted into the jack (51), and the fixed block (30) and the magnetic wheel adjustable connection block (50) are swingably connected through a set screw (60) and an adjusting pin shaft (70); A protruding insertion block (31) is arranged on the fixed block (30), and the insertion block (31) is inserted into the jack (51); The width of the jack (51) is greater than the width of the insertion block (31), the adjusting pin shaft (70) has a threaded portion and an adjusting portion (71), and the adjusting portion (71) is a conical structure with a gradually changing diameter.

2. The novel digital ray detection mechanism for pipelines according to claim 1, characterized in that, A temperature adjustment unit (340) is arranged on the heat dissipation shell (330) for adjusting the temperature of the new ray detection mechanism, and the temperature adjustment unit (340) comprises A heating element (341), which is of a cylindrical structure and is arranged in the middle of the heat dissipation shell (330); A semiconductor refrigeration sheet (342), arranged on the heat dissipation shell (330), and there are several of them, and several semiconductor refrigeration sheets (342) are circumferentially located outside the heating element (341); and Two temperature sensors.

3. A novel digital ray detection mechanism for pipelines according to claim 1, characterized in that, The detection device main body (100) comprises A lower housing (110) and an upper cover plate (120), the upper cover plate (120) is fastened to the lower housing (110) and then connected by screws. The lower housing (110) has a housing bin (111), and the lower housing (110) and the upper cover plate (120) are fastened to the heat dissipation housing (330); A lithium battery pack (112), which is arranged on the lower housing (110) and is located inside the housing bin (111); A motion control board (123), which is fastened and connected to the upper cover plate (120) and is located inside the housing bin (111); A battery management system board (124), which is arranged between the motion control board (123) and the upper cover plate (120); and A computer main control board (115), which is arranged inside the lower housing (110) and is used to control the working and non - working states of the detection device main body (100).

4. A novel digital ray detection mechanism for pipelines according to claim 3, characterized in that, The detection device main body (100) further includes A battery of the battery management system board (121), which is arranged on the upper cover plate (120), and the battery of the battery management system board (121) is electrically connected to the battery management system board (124) and is used to supply power to the battery management system board (124); A motor driver board (122), which is arranged between the motion control board (123) and the upper cover plate (120) and is located beside the battery management system board (124); Connectors (116), several of which are arranged, and several of the connectors (116) penetrate through the side wall of the lower housing (110); and A fan (113), which is arranged on the lower housing (110) and is located on one side of the lithium battery pack (112).

5. A novel digital ray detection mechanism for pipelines according to claim 3, characterized in that, Several heat dissipation fins (331) are arranged on the heat dissipation housing (330), and several card slots (114) are arranged on the lower housing (110). Several of the card slots (114) are in snap - fit with several of the heat dissipation fins (331).

6. The novel digital ray detection mechanism for pipelines according to claim 1, characterized in that, Both the encoder wheel (210) and the motor wheel (220) include Two wheel end caps (201) arranged in parallel, and the wheel end caps (201) are of an annular structure; A shaft sleeve (202), which is fixedly arranged between the two wheel end caps (201). The shaft sleeve (202) has a strong magnetic hole (2021), a fixing hole (2022) and a groove (2023), and the fixing hole (2022) coincides with the center line of the shaft sleeve (202); A strong magnetic part (203), which is located inside the strong magnetic hole (2021). The strong magnetic part (203) is of a circular structure, and the axis of the strong magnetic part (203) is perpendicular to the axis of the wheel end cap (201); A magnetic conductive sleeve (204), which is arranged on the shaft sleeve (202) and is located on one side of the groove (2023); and An outer strong magnet (205), which is fixedly arranged on the magnetic conductive sleeve (204), and the outer strong magnet (205) is located inside the groove (2023). A through hole (2051) is arranged between the magnetic conductive sleeve (204) and the outer strong magnet (205).

7. A novel digital ray detection mechanism for pipelines according to claim 6, characterized in that, The encoder wheel (210) and the motor wheel (220) further include a first sleeve (2024), integrally provided on the bushing (202), the axis of the first sleeve (2024) coincides with that of the fixing hole (2022), the first sleeve (2024) is located on the side of the groove (2023), and the first sleeve (2024) extends into the through hole (2051); a guide sleeve (206), penetratingly provided in the through hole (2051) of the magnetic conductive sleeve (204) and the outer strengthening magnet (205), and the outer strengthening magnet (205) is of a polygonal structure; a fastening screw (207-1), provided in the guide sleeve (206) and the first sleeve (2024).

8. A novel digital ray detection mechanism for pipelines according to claim 7, characterized in that, The encoder wheel (210) and the motor wheel (220) further include a ratchet wheel (208), rotatably provided on one side of the bushing (202), the ratchet wheel (208) and the first sleeve (2024) are respectively located on both sides of the bushing (202), and the ratchet wheel (208) is coaxially arranged with the fixing hole (2022); a pawl (209), rotatably provided on the bushing (202) and beside the ratchet wheel (208); an adjusting screw (207-2), fixedly connecting the ratchet wheel (208) and the strong magnetic part (203), and a thread locking agent is provided at the contact positions of the adjusting screw (207-2), the ratchet wheel (208) and the strong magnetic part (203).

9. The novel digital ray detection mechanism for pipelines according to claim 8, characterized in that, The encoder wheel (210) and the motor wheel (220) further include a spring (2091), connecting the pawl (209) and the bushing (202), the pawl (209) is located between the spring (2091) and the ratchet wheel (208); a stop rod (2092) is further provided on the pawl (209), the stop rod (2092) is perpendicular to the pawl (209) and the stop rod (2092) extends into the wheel end cover (201); The encoder wheel (210) further includes an encoder (211), the encoder (211) is coaxial with the encoder wheel (210), and the encoder (211) is connected to the fixed connection assembly (230) through an encoder support (212); The motor wheel (220) further includes a motor (221) and a speed reducer (222), the motor (221) and the speed reducer (222) are connected and arranged on the self-aligning mechanism (240), and the speed reducer (222) is coaxially connected to the wheel end cover (201).

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