Nondestructive testing mechanism for power plant boiler fault diagnosis

Abstract

The utility model provides a nondestructive testing mechanism for fault diagnosis of a power station boiler, which comprises a chassis connected with a guide rod and a power motor, and an output shaft of the power motor is connected with a screw rod; the display screen is connected with the chassis through a mounting frame, and the power motor is electrically connected with the display screen; the detection assembly is arranged on the upper side of the chassis, the detection assembly comprises a lifting frame, the screw rod is in threaded connection with the lifting frame, the guide rod penetrates through the lifting frame, the lifting frame is connected with an arc-shaped rod, and the arc-shaped rod penetrates through the symmetrical concentric-square-shaped blocks. The utility model relates to the technical field of detection, in particular to a nondestructive detection mechanism for fault diagnosis of a power station boiler. Aiming at the defects in the prior art, the utility model develops the nondestructive testing mechanism for fault diagnosis of the power plant boiler, and the nondestructive testing mechanism can be used for carrying out ultrasonic testing on the vertical power plant boiler with a larger size so as to realize fault diagnosis.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a non-destructive detection mechanism for fault diagnosis of power plant boilers. Background Art

[0002] Power plant boilers are critical equipment in electricity production, and their fault diagnosis is crucial to ensuring the safe and stable operation of the power plant. Common faults in power plant boilers include slagging on the heating surface, fire extinguishing within the furnace, secondary combustion in the tail flue, superheater leaks, economizer leaks, and water-cooled wall leaks. Common fault diagnosis methods include infrared temperature measurement and ultrasonic diagnostic methods. The basic principle of ultrasonic testing is to utilize the reflection, refraction, scattering, diffraction, and attenuation phenomena produced by ultrasonic waves when propagating through different media. When ultrasonic waves encounter defects or interfaces between different media, they are reflected and refracted. The reflected ultrasonic waves are received by the probe and converted into electrical signals for processing and analysis. By measuring changes in these reflected or transmitted waves, such as acoustic time, amplitude, waveform, or frequency, it is possible to determine certain aspects of the material's properties and the internal structure of the structure, thus achieving the purpose of testing.

[0003] Existing technology, such as the utility model of an ultrasonic detector for boiler turbines, with authorization announcement number CN218865840U, realizes that two half ring gears can form a complete ring gear, which facilitates the meshing of gears and the rotation of the ring gear to achieve detection.

[0004] Currently, there is a lack of equipment that can facilitate ultrasonic testing of larger vertical power plant boilers for fault diagnosis.

[0005] Therefore, in view of the above problems, a non-destructive testing mechanism for power plant boiler fault diagnosis is proposed to solve the above problems. Utility Model Content

[0006] Aiming at the deficiencies of the prior art, the utility model develops a nondestructive testing mechanism for power plant boiler fault diagnosis. The utility model can implement ultrasonic testing on larger vertical power plant boilers to achieve fault diagnosis.

[0007] The present invention solves the following technical problem: The present invention provides a nondestructive testing mechanism for diagnosing power plant boiler faults, comprising: a chassis connected to a guide rod, the chassis connected to a power motor, the output shaft of the power motor connected to a screw; a display screen connected to the chassis via a mounting bracket, the power motor electrically connected to the display screen; and a detection assembly disposed on the upper side of the chassis, the detection assembly comprising a lifting frame, the screw threadedly connected to the lifting frame, the guide rod passing through the lifting frame, the lifting frame connected to an arcuate rod, the arcuate rod passing through symmetrical circular blocks, the symmetrical circular blocks respectively connected to mounting shafts, the symmetrical mounting shafts respectively connected to electric push rods, the push rods of the symmetrical electric push rods respectively connected to ultrasonic testing equipment. By using symmetrically arranged ultrasonic testing equipment, which is located radially along the arcuate rods, when both are in close contact with the power plant boiler, the arcuate rods are kept substantially concentric with the cylindrical power plant boiler, making it easy to use. By using a screw threadedly connected to the lifting frame, the lifting frame can be moved in the height direction, facilitating fault diagnosis of the power plant boiler.

[0008] As an optimization, the lifting frame is connected to an adjustment motor, the output shaft of which passes through the lifting frame and is connected to a driving gear. The lifting frame bearing is connected to the central axis of a driven gear, which engages the driven gear. The driven gear is connected to a turntable. The edge of the turntable is rotatably connected to one end of a connecting rod, the other end of which is rotatably connected to a slider. The slider is rotatably connected to one end of a symmetrical power rod, and the other ends of the symmetrical power rods are rotatably connected to the corresponding mounting shafts. The adjustment motor is wirelessly connected to the display screen. By using the adjustment motor to drive, different areas at the same height of the power plant boiler can be inspected, making it easy to use.

[0009] As an optimization, the arc rod is connected to a guide rod, and the guide rod passes through the slider. The guide rod is located at a symmetrical position of the arc rod, so that when the slider moves, the ultrasonic detection devices on both sides move synchronously.

[0010] As an optimization, the symmetrical circular blocks are respectively connected to the arc-shaped rods.

[0011] As an optimization, the electric push rod and the ultrasonic detection device are wirelessly connected to the display screen, making it convenient to observe the detection process through the display screen.

[0012] As an optimization, the guide rod is connected to a limit plate to prevent the screw rod from being separated from the lifting frame.

[0013] As an optimization, the chassis is connected to a counterweight block to facilitate maintaining the stability of the device.

[0014] As an optimization, the four corners of the chassis are respectively connected to the mounting bases of the wheels, so as to facilitate the transfer of the device.

[0015] The effects provided in the content of the utility model are only the effects of the embodiments, rather than all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0016] (1) This device uses a screw thread to connect the lifting frame, so that the lifting frame can move in the height direction, which is convenient for fault diagnosis of power plant boilers.

[0017] (2) This device uses a symmetrically arranged ultrasonic detection device, which is located in the radial direction of the arc rod. When both are close to the power plant boiler at the same time, the arc rod and the cylindrical power plant boiler are kept basically concentric, which is easy to use.

[0018] (3) This device is driven by an adjustable motor to detect different areas at the same height of the power plant boiler, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 .

[0021] Figure 2 This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 1 .

[0022] Figure 3 This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 2 .

[0023] Figure 4 This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 3 .

[0024] Figure 5 This is a schematic diagram of the partial three-dimensional structure of the utility model Figure 4 .

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 .

[0026] In the figure: 1. limit plate, 2. guide rod, 3. display screen, 4. chassis, 5. counterweight, 6. wheel, 7. power motor, 8. screw, 9. lifting frame, 10. arc rod, 11. ultrasonic detection equipment, 12. electric push rod, 13. circular block, 14. turntable, 15. driven gear, 16. driving gear, 17. adjustment motor, 18. connecting rod, 19. guide round rod, 20. mounting shaft, 21. power rod, 22. slider. DETAILED DESCRIPTION

[0027] To clearly illustrate the technical features of this solution, the present invention is described in detail below using specific embodiments and accompanying drawings. The following disclosure provides numerous different embodiments or examples for implementing various configurations of the present invention. To simplify the disclosure of the present invention, the following descriptions focus on components and configurations of specific examples. Furthermore, the present invention may repeat reference numerals and / or letters across different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted to avoid unnecessarily limiting the present invention. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] like Figures 1 to 6As shown, a nondestructive testing mechanism for diagnosing power plant boiler faults comprises: a chassis 4 connected to a guide rod 2, which is connected to a power motor 7, the output shaft of which is connected to a screw 8; a display screen 3 connected to the chassis 4 via a mounting bracket, the power motor 7 being electrically connected to the display screen 3; and a detection assembly disposed on the upper side of the chassis 4. The detection assembly comprises a lifting frame 9, the screw 8 being threadedly connected to the lifting frame 9, the guide rod 2 passing through the lifting frame 9, the lifting frame 9 connecting to an arcuate rod 10, the arcuate rod 10 passing through symmetrical circular blocks 13, the symmetrical circular blocks 13 being respectively connected to mounting shafts 20, the symmetrical mounting shafts 20 being respectively connected to electric push rods 12, the push rods of the symmetrical electric push rods 12 being respectively connected to ultrasonic detection devices 11. By using symmetrically arranged ultrasonic detection devices 11, which are located radially of the arcuate rods 10, when both are in close contact with the power plant boiler, the arcuate rod 10 is kept substantially concentric with the cylindrical power plant boiler, making it convenient to use. By adopting the screw rod 8 to threadably connect the lifting frame 9, the lifting frame can be moved in the height direction, thereby facilitating the fault diagnosis of the power plant boiler.

[0029] The model of the power motor 7 is ASD-B2-3023-B.

[0030] The electric push rod 12 and the ultrasonic detection device 11 are wirelessly connected to the display screen 3, so that the detection process can be observed through the display screen 3.

[0031] The model of the ultrasonic detection device 11 is HS PA20-Fe, and the model of the electric push rod 12 is XDHA12-1000. Both are equipped with a PLC wireless communication module DMA860H.

[0032] The guide rod 2 is connected to the limit plate 1 to prevent the screw rod 8 from being separated from the lifting frame 9.

[0033] The chassis 4 is connected to the counterweight 5 to facilitate maintaining the stability of the device.

[0034] The four corners of the chassis 4 are respectively connected to the mounting bases of the wheels 6, so as to facilitate the transfer of the device.

[0035] Embodiment 1: The symmetrical circular blocks 13 are respectively connected to the arc-shaped rods 10.

[0036] The workflow of this embodiment is:

[0037] According to the size of the power plant boiler and the radius of the arc rod 10, the extension of the electric push rod 12 is controlled through the display screen 3, and the device is moved so that the ultrasonic detection equipment 11 is close to the surface of the power plant boiler and the arc rod 10 is roughly aligned with the center of the power plant boiler.

[0038] Through the display screen 3, the power motor 7 is controlled to rotate, the power motor 7 drives the screw 8 to rotate, and the screw 8 drives the lifting frame 9 to move along the guide rod 2, so that the detection component moves in the height direction and detects different height positions of the power plant boiler.

[0039] Embodiment 2: The lifting frame 9 is connected to an adjustment motor 17. The output shaft of the adjustment motor 17 passes through the lifting frame 9 and is connected to a driving gear 16. The bearing of the lifting frame 9 is connected to the central axis of a driven gear 15. The driving gear 16 engages with the driven gear 15. The driven gear 15 is connected to a turntable 14. The edge of the turntable 14 is rotatably connected to one end of a connecting rod 18. The other end of the connecting rod 18 is rotatably connected to a slider 22. The slider 22 is rotatably connected to one end of a symmetrical power rod 21. The other ends of the symmetrical power rods 21 are rotatably connected to the corresponding mounting shafts 20. The adjustment motor 17 is wirelessly connected to the display screen 3. By using the adjustment motor 17 to drive, different areas at the same height of the power plant boiler can be inspected, which is convenient to use.

[0040] The model of the regulating motor 17 is MS1H1-20B30CB-A331Z, and a PLC wireless communication module DMA860H is installed.

[0041] The arc rod 10 is connected to the guide rod 19, and the guide rod 19 passes through the slider 22. The guide rod 19 is located at a symmetrical position of the arc rod 10, so that when the slider 22 moves, the ultrasonic detection devices 11 on both sides move synchronously.

[0042] The workflow of this embodiment is:

[0043] Through the display screen 3, the adjustment motor 17 is controlled to rotate, the adjustment motor 17 drives the driving gear 16 to rotate, the driving gear 16 drives the driven gear 15 and the turntable 14 to rotate, the turntable 14 drives the connecting rod 18 to swing, the connecting rod 18 drives the slider 22 to move along the guide round rod 19, the slider 22 drives the power rod 21 to swing, the power rod 21 drives the installation shaft 20 to swing, the installation shaft 20 drives the circular block 13 to move along the arc rod 10, and the installation shaft 20 drives the electric push rod 12 and the ultrasonic detection equipment 11 to swing, so as to realize the detection of different positions at the same height position of the power plant boiler.

[0044] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the utility model.

Claims

1. A nondestructive testing mechanism for power plant boiler fault diagnosis, characterized in that: include: A chassis (4), the chassis (4) is connected to the guide rod (2), the chassis (4) is connected to the power motor (7), and the output shaft of the power motor (7) is connected to the screw (8); A display screen (3) is connected to the chassis (4) via a mounting frame, and the power motor (7) is electrically connected to the display screen (3); A detection component is arranged on the upper side of the chassis (4), and the detection component includes a lifting frame (9), the screw rod (8) is threadedly connected to the lifting frame (9), the guide rod (2) passes through the lifting frame (9), the lifting frame (9) is connected to the arc rod (10), the arc rod (10) passes through the symmetrical round-shaped blocks (13), the symmetrical round-shaped blocks (13) are respectively connected to the installation shafts (20), the symmetrical installation shafts (20) are respectively connected to the electric push rods (12), and the push rods of the symmetrical electric push rods (12) are respectively connected to the ultrasonic detection equipment (11).

2. The nondestructive testing mechanism for power plant boiler fault diagnosis according to claim 1, characterized in that: The lifting frame (9) is connected to the adjustment motor (17), the output shaft of the adjustment motor (17) passes through the lifting frame (9), the output shaft of the adjustment motor (17) is connected to the driving gear (16), the bearing of the lifting frame (9) is connected to the central axis of the driven gear (15), the driving gear (16) engages with the driven gear (15), the driven gear (15) is connected to the turntable (14), the edge of the turntable (14) is rotated to connect one end of the connecting rod (18), the other end of the connecting rod (18) is rotated to connect the slider (22), the slider (22) is rotated to connect one end of the symmetrical power rod (21), the other end of the symmetrical power rod (21) is respectively rotated to connect the corresponding mounting shaft (20), and the adjustment motor (17) is wirelessly connected to the display screen (3).

3. The nondestructive testing mechanism for power plant boiler fault diagnosis according to claim 2, characterized in that: The arc-shaped rod (10) is connected to a guide round rod (19), and the guide round rod (19) passes through the slider (22).

4. The nondestructive testing mechanism for power plant boiler fault diagnosis according to claim 1, characterized in that: The symmetrical circular blocks (13) are respectively connected to the arc-shaped rods (10).

5. The nondestructive testing mechanism for power plant boiler fault diagnosis according to claim 1, characterized in that: The electric push rod (12) and the ultrasonic detection device (11) are respectively wirelessly connected to the display screen (3).

6. The nondestructive testing mechanism for power plant boiler fault diagnosis according to claim 1, characterized in that: The guide rod (2) is connected to the limiting plate (1).

7. The nondestructive testing mechanism for power plant boiler fault diagnosis according to claim 1, characterized in that: The chassis (4) is connected to the counterweight (5).

8. The nondestructive testing mechanism for power plant boiler fault diagnosis according to claim 1, characterized in that: The four corners of the chassis (4) are respectively connected to the mounting seats of the wheels (6).

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