Boiler pipeline detection device

Abstract

The utility model relates to the technical field of boiler maintenance, and discloses a boiler pipeline detection device which comprises a support, a detection mechanism and a flaw detection mechanism, the support comprises a connecting rod and a mounting seat, the detection mechanism comprises an ultrasonic probe, and the ultrasonic probe detects the wall thickness of a pipeline; the flaw detection mechanism comprises a flaw detection driving part, a flaw detection platform and a magnetic circuit assembly; the flaw detection driving part drives the flaw detection platform to get close to or away from the mounting seat; the magnetic circuit assembly comprises a first permanent magnet, a second permanent magnet and a magnetic flux leakage probe, and the first permanent magnet, the magnetic flux leakage probe and the second permanent magnet are sequentially arranged on the flaw detection platform. According to the technical scheme, the ultrasonic probe measures the wall thickness of the pipeline and judges whether the pipe wall is damaged or not; if the damage flaw detection platform is close to the pipeline, the first permanent magnet and the second permanent magnet form a magnetic flux loop to penetrate through the pipe wall; the damage of the pipe wall is detected by the magnetic flux leakage probe to obtain a magnetic flux leakage signal; the damage type is analyzed according to the magnetic flux leakage signal, maintenance is performed according to the damage type, and the pipeline maintenance time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler maintenance, in particular to a boiler pipeline detection device. Background Art

[0002] After long-term operation, power plant boiler tubes wear out from the combined effects of fly ash and steam soot blowing, leading to thinning of the tube walls. These thinned tube walls are easily ruptured by the high-temperature, high-pressure steam flowing through them, causing boiler shutdowns and disrupting production. Before each boiler startup, tube thickness is checked to ensure proper operation. Currently, this is primarily done using ultrasonic probes. When an ultrasonic pulse emitted by the probe passes through the pipe and reaches a material interface, the pulse is reflected back to the probe. The pipe thickness is determined by precisely measuring the propagation time of the ultrasonic wave in the material. A decrease in tube wall thickness indicates damage at this location.

[0003] However, ultrasonic probes can only measure the thickness of the pipe. After detecting damage to the pipe wall, they cannot promptly determine the type of damage. Users are unable to determine a repair plan based on the damage type in a short period of time, resulting in a longer maintenance cycle and delayed construction. Utility Model Content

[0004] The main purpose of the utility model is to provide a boiler pipeline detection device, which is intended to shorten the maintenance time of the boiler pipeline.

[0005] To achieve the above objectives, the boiler pipeline detection device proposed in the present invention includes:

[0006] A bracket, the bracket comprising a connecting rod and a mounting seat, the mounting seat being arranged on the connecting rod;

[0007] a detection mechanism, the detection mechanism comprising an ultrasonic probe, the ultrasonic probe being disposed on the mounting seat and being used to detect the wall thickness of the pipeline; and

[0008] The flaw detection mechanism includes a flaw detection drive, a flaw detection platform, and a magnetic circuit assembly, the flaw detection drive is arranged on the mounting seat, the flaw detection platform is connected to the output end of the flaw detection drive, and the flaw detection drive drives the flaw detection platform to move closer to or away from the mounting seat; the ultrasonic probe is electrically connected to the flaw detection drive; the magnetic circuit assembly includes a first permanent magnet, a second permanent magnet, and a leakage magnetic probe, the first permanent magnet, the second permanent magnet, and the leakage magnetic probe are all arranged on the side of the flaw detection platform facing away from the mounting seat, and the first permanent magnet, the leakage magnetic probe, and the second permanent magnet are arranged in sequence along a direction extending perpendicular to the length direction of the connecting rod.

[0009] Optionally, the magnetic circuit assembly further includes at least two isolators, one of which is arranged on the side of the first permanent magnet facing away from the flaw detection platform, and the other isolator is arranged on the side of the second permanent magnet facing away from the flaw detection platform; the two isolators are respectively used to transmit the magnetism of the first permanent magnet and the second permanent magnet.

[0010] Optionally, the isolating member is a steel brush.

[0011] Optionally, the bracket further includes a plurality of magnetic rollers, each of which is rotatably connected to the mounting base.

[0012] Optionally, the bracket further includes an elastic member corresponding to each of the magnetic rollers, each of the elastic members is disposed on the mounting seat, and each of the magnetic rollers is rotatably connected to one of the elastic members.

[0013] Optionally, the bracket is formed with a wiring hole that passes through the connecting rod and the mounting seat, and the wiring hole is used to accommodate an electric wire connecting the ultrasonic probe and the magnetic flux leakage probe.

[0014] Optionally, the bracket further includes a telescopic sleeve and a telescopic drive member, the telescopic sleeve is movably connected to an end of the connecting rod away from the mounting seat, and the telescopic drive member is provided on the telescopic sleeve and drives the connecting rod to slide relative to the telescopic sleeve.

[0015] Optionally, the detection mechanism further includes a marking nozzle, which is disposed on the mounting seat and adjacent to the ultrasonic probe.

[0016] Optionally, the flaw detection platform is made of aluminum alloy.

[0017] Optionally, the mounting seat is rotatably connected to the connecting rod.

[0018] In the technical solution of the present utility model, the boiler pipeline detection device includes a bracket, a detection mechanism and a flaw detection mechanism, the bracket includes a connecting rod and a mounting seat, and the mounting seat is provided on the connecting rod; the detection mechanism includes an ultrasonic probe, which is provided on the mounting seat and is used to detect the wall thickness of the pipeline; the flaw detection mechanism includes a flaw detection drive, a flaw detection platform, and a magnetic circuit assembly, the flaw detection drive is provided on the mounting seat, the flaw detection platform is connected to the output end of the flaw detection drive, and the flaw detection drive drives the flaw detection platform close to or away from the mounting seat; the ultrasonic probe is electrically connected to the flaw detection drive; the magnetic circuit assembly includes a first permanent magnet, a second permanent magnet and a leakage magnetic probe, the first permanent magnet, the second permanent magnet and the leakage magnetic probe are all provided on the side of the flaw detection platform facing away from the mounting seat, and the first permanent magnet, the leakage magnetic probe and the second permanent magnet are arranged in sequence along a direction extending perpendicular to the length direction of the connecting rod. In the technical solution of the present utility model, the user holds the connecting rod and extends the mounting base into the boiler close to the pipe. The ultrasonic probe emits ultrasonic pulses to the pipe to measure the wall thickness of the pipe; the wall thickness information is then uploaded to the industrial computer and compared with the wall thickness value preset in the industrial computer; if the measured wall thickness is less than the preset value, it means that the pipe wall is damaged at this location; the industrial computer controls the flaw detection drive to start, driving the flaw detection platform away from the mounting base, so that it approaches the pipe; the first permanent magnet and the second permanent magnet form a magnetic flux loop, and when the flaw detection platform approaches the pipe, the magnetic flux loop passes through the pipe wall; the defects in the pipe wall due to damage are detected by the leakage magnetic probe, thereby obtaining a leakage magnetic signal; the industrial computer can analyze the damage type of the boiler pipe at this location based on the received leakage magnetic signal, and the user can perform repairs in a timely manner according to the damage type, thereby shortening the maintenance time of the boiler pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of an embodiment of a boiler pipeline detection device provided by the present utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0022] Figure 3 This is a structural diagram of another embodiment of the boiler pipeline detection device of the present utility model;

[0023] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0024] Description of Figure Numbers:

[0025]

[0026]

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] Please refer to Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4 In order to solve the problem of long maintenance time for boiler pipelines, the utility model proposes a boiler pipeline detection device 1000, comprising:

[0032] The bracket 1, the detection mechanism and the flaw detection mechanism, the bracket 1 includes a connecting rod 11 and a mounting seat 12, the mounting seat 12 is arranged on the connecting rod 11; the detection mechanism includes an ultrasonic probe 21, the ultrasonic probe 21 is arranged on the mounting seat 12, and is used to detect the wall thickness of the pipeline; the flaw detection mechanism includes a flaw detection drive 31, a flaw detection platform 32, and a magnetic circuit component, the flaw detection drive 31 is arranged on the mounting seat 12, the flaw detection platform 32 is connected to the output end of the flaw detection drive 31, and the flaw detection drive 31 drives the flaw detection platform 32 is close to or away from the mounting base 12; the ultrasonic probe 21 is electrically connected to the flaw detection drive 31; the magnetic circuit assembly includes a first permanent magnet 331, a second permanent magnet 332 and a magnetic leakage probe 333, and the first permanent magnet 331, the second permanent magnet 332 and the magnetic leakage probe 333 are all arranged on the side of the flaw detection platform 32 facing away from the mounting base 12, and the first permanent magnet 331, the magnetic leakage probe 333 and the second permanent magnet 332 are arranged in sequence along a direction extending perpendicular to the length direction of the connecting rod 11.

[0033] In the technical solution of the present utility model, a user holds the connecting rod 11 and extends the mounting base 12 into the boiler, close to the pipe. The ultrasonic probe 21 emits an ultrasonic pulse into the pipe. When the ultrasonic pulse passes through the pipe wall and reaches the material interface, it is reflected back to the probe. The pipe wall thickness is determined by accurately measuring the propagation time of the ultrasonic wave in the material, thereby obtaining the pipe wall thickness value. The wall thickness information is then uploaded to the industrial computer and compared with the preset wall thickness value in the industrial computer. If the measured wall thickness is less than the preset value, it means that the pipe wall is damaged. The industrial computer controls the flaw detection drive 31 to activate, driving the flaw detection platform 32 away from the mounting base 12 and closer to the pipe. The first permanent magnet 331 and the second permanent magnet 332 form a magnetic flux loop. When the flaw detection platform 32 approaches the pipe, the magnetic flux loop passes through the pipe wall. The defects in the pipe wall caused by the damage are detected by the magnetic flux leakage probe 333, thereby generating a magnetic flux leakage signal. The industrial computer can then analyze the damage type of the boiler pipe based on the received magnetic flux leakage signal, allowing the user to perform repairs according to the damage type, thereby shortening the maintenance time of the boiler pipe.

[0034] The magnetic circuit assembly also includes at least two isolators. In one embodiment of the present invention, the magnetic circuit assembly further includes two isolators, one of which is located on the side of the first permanent magnet 331 facing away from the flaw detection platform 32, and the other of which is located on the side of the second permanent magnet 332 facing away from the flaw detection platform 32. The two isolators are used to transmit the magnetism of the first permanent magnet 331 and the second permanent magnet 332, respectively. The isolators isolate the first permanent magnet 331 and the second permanent magnet 332 from the pipeline, preventing them from becoming magnetically attracted to the pipeline and becoming difficult to remove. This facilitates the user's ability to move the mounting base 12 to inspect the entire pipeline.

[0035] The isolation member can be a plastic block or a steel brush 334. Any material that does not interfere with the magnetic flux circuit formed by the first permanent magnet 331 and the second permanent magnet 332 can be used as the isolation member. In one embodiment of the present invention, the isolation member is a steel brush 334. The steel brush 334 is both flexible and resilient, making it easier to approach the pipeline. The transfer of magnetism by the steel brush 334 allows the first permanent magnet 331 and the second permanent magnet 332 to have a higher degree of magnetization of the pipeline. The higher the degree of magnetization of the pipeline, the more accurate the magnetic flux leakage signal detected by the magnetic flux leakage probe 333. Therefore, the type of pipeline damage can be more accurately determined based on the magnetic flux leakage signal.

[0036] The bracket 1 also includes multiple magnetic rollers 13. In one embodiment of the present invention, the bracket 1 includes four magnetic rollers 13, each of which is rollably connected to the mounting base 12. The magnetic rollers 13 roll on the pipe, securing them securely to the pipe through magnetic force, facilitating axial movement of the bracket 1 along the pipe. Furthermore, the adherence of the magnetic rollers 13 to the pipe ensures a consistent distance between the ultrasonic probe 21 and the pipe's outer wall, thereby reducing errors in the pipe wall thickness data measured by the ultrasonic probe 21.

[0037] In one embodiment of the present invention, the bracket 1 further includes an elastic member 14 corresponding to each magnetic roller 13. Each elastic member 14 is disposed on the mounting base 12, and each magnetic roller 13 is rotatably connected to an elastic member 14. The elastic members 14 connect the mounting base 12 and the magnetic rollers 13, allowing the distance between the magnetic rollers 13 and the mounting base 12 to be varied, thereby enabling inspection of boiler pipes of a wider range of different specifications, thereby expanding the application range of the boiler pipe inspection device 1000.

[0038] In one embodiment of the present invention, the bracket 1 is formed with a wiring hole 111 extending through the connecting rod 11 and the mounting base 12. The wiring hole 111 is used to accommodate the wires connecting the ultrasonic probe 21 and the magnetic flux leakage probe 333. The wires connecting the ultrasonic probe 21 and the magnetic flux leakage probe 333 can pass through the wiring hole 111 between the connecting rod 11 and the mounting base 12, preventing the wires from becoming entangled with components of the boiler pipeline inspection device 1000 and affecting measurement.

[0039] In one embodiment of the present invention, the bracket 1 further includes a telescopic sleeve 15 and a telescopic drive member 16. The telescopic sleeve 15 is movably connected to the end of the connecting rod 11 away from the mounting base 12. The telescopic drive member 16 is disposed on the telescopic sleeve 15 and drives the connecting rod 11 to slide relative to the telescopic sleeve 15. The telescopic drive member 16 can drive the connecting rod 11 forward to extend into the gap between the boiler pipes, thereby facilitating user operation.

[0040] In one embodiment of the present invention, the detection mechanism further includes a marking nozzle 22, which is mounted on the mounting base 12 and adjacent to the ultrasonic probe 21. The ultrasonic probe 21 emits an ultrasonic pulse into the pipe. When the ultrasonic pulse passes through the pipe wall and reaches the material interface, it is reflected back to the probe. The pipe wall thickness is determined by accurately measuring the propagation time of the ultrasonic wave in the material, thereby obtaining the pipe wall thickness value. The wall thickness information is then uploaded to the industrial computer and compared with the wall thickness value preset in the industrial computer. If the measured wall thickness is less than the preset value, it means that the pipe wall is damaged at this location. The industrial computer controls the marking nozzle 22 to spray a mark onto the pipe, making it easier for users to repair the pipe at this location.

[0041] Furthermore, the ultrasonic probe 21 emits an ultrasonic pulse into the pipe. When the ultrasonic pulse passes through the pipe wall and reaches the material interface, it is reflected back to the probe. The pipe wall thickness is determined by accurately measuring the propagation time of the ultrasonic wave in the material, thereby obtaining the pipe wall thickness value. The wall thickness information is then uploaded to the industrial computer and compared with the preset wall thickness value in the industrial computer. If the measured wall thickness is less than the preset value, it means that the pipe wall is damaged. The industrial computer controls the flaw detection drive 31 to activate, driving the flaw detection platform 32 away from the mounting base 12 and closer to the pipe. The first permanent magnet 331 and the second permanent magnet 332 form a magnetic flux loop. When the flaw detection platform 32 approaches the pipe, the magnetic flux loop passes through the pipe wall. The defects in the pipe wall caused by the damage are detected by the magnetic flux leakage probe 333, thereby obtaining a magnetic flux leakage signal. The industrial computer can then analyze the damage type of the boiler pipe based on the received magnetic flux leakage signal. The marking nozzle 22 sprays different marks based on the damage type of the boiler pipe, allowing the user to determine different repair plans based on the marks, thereby facilitating maintenance work.

[0042] The flaw detection platform 32 can be made of plastic or aluminum alloy, or any non-magnetic material. In one embodiment of the present invention, the flaw detection platform 32 is made of aluminum alloy. Aluminum alloy has high structural strength and is not easily deformed. Furthermore, aluminum alloy is non-magnetic, which does not affect the magnetic transmission between the first permanent magnet 331 and the second permanent magnet 332. Therefore, aluminum alloy is the preferred material for the flaw detection platform 32.

[0043] It is understood that the mounting base 12 can be fixedly connected to the connecting rod 11 or can be rotatably connected to the connecting rod 11. In one embodiment of the present invention, the mounting base 12 is rotatably connected to the connecting rod 11. This configuration allows the mounting base 12 to rotate relative to the connecting rod 11, thereby allowing the mounting base 12 to penetrate into different locations of the boiler pipe, thereby enabling inspection of pipes of more boilers of different specifications, thereby expanding the application range of the boiler pipe inspection device 1000.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A boiler pipeline detection device (1000), characterized in that: include: A bracket (1), the bracket (1) comprising a connecting rod (11) and a mounting seat (12), the mounting seat (12) being arranged on the connecting rod (11); A detection mechanism, comprising an ultrasonic probe (21), the ultrasonic probe (21) being disposed on the mounting seat (12) and used for detecting the wall thickness of the pipeline; and The flaw detection mechanism comprises a flaw detection driving member (31), a flaw detection platform (32), and a magnetic circuit assembly, wherein the flaw detection driving member (31) is arranged on the mounting seat (12), the flaw detection platform (32) is connected to the output end of the flaw detection driving member (31), and the flaw detection driving member (31) drives the flaw detection platform (32) to approach or move away from the mounting seat (12); the ultrasonic probe (21) is electrically connected to the flaw detection driving member (31); the magnetic circuit assembly comprises a first A permanent magnet (331), a second permanent magnet (332) and a magnetic flux leakage probe (333), wherein the first permanent magnet (331), the second permanent magnet (332) and the magnetic flux leakage probe (333) are all arranged on a side of the flaw detection platform (32) facing away from the mounting seat (12), and the first permanent magnet (331), the magnetic flux leakage probe (333) and the second permanent magnet (332) are arranged in sequence along a direction extending perpendicular to the length direction of the connecting rod (11).

2. The boiler pipeline detection device (1000) according to claim 1, characterized in that: The magnetic circuit assembly further comprises at least two isolating members, one of the isolating members being arranged on a side of the first permanent magnet (331) facing away from the flaw detection platform (32), and the other isolating member being arranged on a side of the second permanent magnet (332) facing away from the flaw detection platform (32); the two isolating members being used to conduct the magnetism of the first permanent magnet (331) and the second permanent magnet (332), respectively.

3. The boiler pipeline detection device (1000) according to claim 2, characterized in that: The isolating member is a steel brush (334).

4. The boiler pipeline detection device (1000) according to claim 1, characterized in that: The bracket (1) further comprises a plurality of magnetic rollers (13), each of the magnetic rollers (13) being rotatably connected to the mounting seat (12).

5. The boiler pipeline detection device (1000) according to claim 4, characterized in that: The bracket (1) further includes an elastic member (14) corresponding to each of the magnetic rollers (13), each of the elastic members (14) is disposed on the mounting seat (12), and each of the magnetic rollers (13) is rotatably connected to one of the elastic members (14).

6. The boiler pipeline detection device (1000) according to claim 1, characterized in that: The bracket (1) is formed with a wiring hole (111) that passes through the connecting rod (11) and the mounting seat (12), and the wiring hole (111) is used to accommodate an electric wire connecting the ultrasonic probe (21) and the magnetic flux leakage probe (333).

7. The boiler pipeline detection device (1000) according to claim 1, characterized in that: The bracket (1) further comprises a telescopic shaft sleeve (15) and a telescopic driving member (16), wherein the telescopic shaft sleeve (15) is movably connected to an end of the connecting rod (11) away from the mounting seat (12), and the telescopic driving member (16) is provided on the telescopic shaft sleeve (15) and drives the connecting rod (11) to slide relative to the telescopic shaft sleeve (15).

8. The boiler pipeline detection device (1000) according to any one of claims 1 to 7, characterized in that: The detection mechanism further comprises a marking nozzle (22), which is arranged on the mounting seat (12) and adjacent to the ultrasonic probe (21).

9. The boiler pipeline detection device (1000) according to any one of claims 1 to 7, characterized in that: The material of the flaw detection platform (32) is aluminum alloy.

10. The boiler pipeline detection device (1000) according to any one of claims 1 to 7, characterized in that: The mounting seat (12) is rotatably connected to the connecting rod (11).

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