Handheld integrated device for rapidly scanning and measuring pitting corrosion

Abstract

The utility model belongs to the technical field of stainless steel material pitting corrosion detection, and relates to a handheld integrated device for rapidly scanning and measuring pitting corrosion, which comprises a line laser scanner, a host, a sleeve, a stepping motor, a control panel and a lead screw, the host is used for controlling the start and stop of the line laser scanner, and is also used for receiving and transmitting scanning data of the line laser scanner; the line laser scanner is electrically connected with the host. The host is electrically connected with the stepping motor and the control panel. The line laser scanner is fixedly connected with a sleeve, the sleeve is connected with the lead screw through a thread pair, and the sleeve can slide back and forth in the length direction of the lead screw. The stepping motor drives the lead screw to rotate; according to the utility model, a scanning part and a data processing and displaying part for stainless steel material pitting corrosion detection are integrated, so that pitting corrosion scanning measurement is simpler and more convenient, and the applicability is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of stainless steel material pitting corrosion detection and relates to a handheld integrated device for rapid pitting corrosion scanning and measurement. Background Art

[0002] Chlor-alkali chemical production equipment, exposed to long-term high-chlorine, strong acid and alkali corrosive environments, is prone to corrosion defects that threaten production safety. Stainless steel, due to its excellent corrosion resistance, is widely used in key equipment and pipelines in the chlor-alkali chemical industry. However, in chlorine-containing environments, pitting damage can still occur on stainless steel surfaces, particularly in welds and seals, posing a safety hazard. Failure to promptly assess these tiny pitting damages in the early stages of damage can lead to equipment failure, resulting in serious consequences. Therefore, rapid and accurate measurement of the size and depth of pitting pits is crucial for equipment life assessment.

[0003] The current traditional pitting detection methods focus on visual inspection, potentiometric method and X-ray method. As the basic method for detecting pitting pits, visual inspection has the core advantages of simplicity, low cost and non-destructiveness. It can quickly conduct preliminary screening of large areas without complex equipment, and the operation process itself will not cause any damage to the components. However, its detection accuracy and reliability are highly dependent on the experience, vision and lighting conditions of the inspectors, and the labor cost is relatively high. The potentiometric method captures the dynamic process of passivation film rupture, pitting initiation and expansion by measuring the electrochemical potential energy difference at the metal / electrolyte interface. Although it can provide the pitting potential E b , repassivation potential E p Key parameters such as X-ray diffraction patterns can be used to predict the material's sensitivity to pitting in a service environment, but they do not reflect key morphological information such as the current number, size, and depth of pitting, and they are often damaging to the equipment. X-ray methods have unique advantages in detecting pitting pits, especially in evaluating pitting within internal or complex structures. They can non-destructively reveal pitting defects within the inspected object, but their equipment is expensive and easily affected by the environment, resulting in low sensitivity. However, these methods can only obtain a single dimension, the depth of pitting, and cannot achieve high-precision measurement of the three-dimensional dimensions of millimeter-level pitting. On the other hand, traditional methods require wall-mounted testing, resulting in low detection efficiency and high detection costs.

[0004] In recent years, laser scanning technology has demonstrated significant advantages in detecting and characterizing surface pitting, especially in situations requiring high-precision quantitative analysis of three-dimensional morphology. Its core lies in the use of non-contact optical principles, enabling rapid and high-resolution acquisition of three-dimensional morphological data of the surface being measured. It can accurately measure key geometric parameters of pitting, such as depth, diameter, opening area, volume, and, more importantly, aspect ratio, with micron or even submicron accuracy, generating intuitive color height maps or three-dimensional models, providing objective and quantitative results far beyond visual inspection. It also has low reliance on ambient light and operator experience, boasts fast detection speeds, and is suitable for automated, highly repeatable, and precise inspection of critical areas. However, it is currently difficult to apply to inspections of large structures or complex field environments, and industrial field applications are extremely scarce.

[0005] Therefore, a simple and convenient pitting scanning measurement device that can be applied to industrial sites is needed to solve this technical problem. Utility Model Content

[0006] The technical solution adopted by the utility model to solve the technical problem is: a handheld integrated device for rapid scanning and measurement of pitting, including: a line laser scanner, a host, a sleeve, a stepper motor, a control panel, and a screw. The line laser scanner is used to laser scan the pitting area of ​​the equipment to be tested, and the host is used to control the start and stop of the line laser scanner. The host is also used to receive and transmit scanning data of the line laser scanner.

[0007] The line laser scanner is electrically connected to the host, and the host is electrically connected to the stepper motor and the control panel; the line laser scanner is fixedly connected to the sleeve, the sleeve is mounted on the lead screw and connected to the lead screw through a threaded pair, and the sleeve can slide back and forth along the length of the lead screw; the stepper motor drives the lead screw to rotate so that the sleeve moves along the length of the lead screw; the control part, motion part, scanning part and data processing and display part of the existing scanner application are integrated to greatly reduce the size of the equipment.

[0008] Preferably, the handheld integrated device also includes a shell, which encloses the line laser scanner, main unit, sleeve, stepper motor, control panel, and lead screw. A long strip-shaped scanning window is provided on the shell. The length of the scanning window is not less than the reciprocating stroke of the sleeve sliding along the lead screw. The scanning direction of the line laser scanner is from the inside to the outside of the scanning window.

[0009] More preferably, the housing is provided with an inclined panel, the inclined panel is inlaid with a screen, and the screen is electrically connected to the host. The normal direction of the screen is more than 90 degrees to the direction of the laser emitted by the line laser scanner to ensure that scanning and viewing of the screen are performed synchronously.

[0010] Preferably, the housing is provided with a handle, which is equipped with control buttons for controlling the start / stop and rotation direction of the stepper motor, thereby controlling the start / stop and direction of the sleeve's sliding along the lead screw. The housing is also equipped with a computer switch, a power switch, and a power socket, and the host is electrically connected to the control buttons, computer switch, power switch, and power socket, respectively. The housing is connected to the handle, and a control button is embedded above the handle to control the stepper motor's synchronous movement when the scanner starts scanning, completing the scan. Furthermore, by connecting the housing and internal structure to the handle, the currently commonly used fixed laser scanner is improved to a handheld model, increasing the convenience of industrial applications.

[0011] More preferably, the handle includes a left handle connection and a right handle connection arranged on two opposite side walls of the shell, and the scanning window is arranged on the side wall between the left handle connection and the right handle connection.

[0012] More preferably, limit switches are provided at both ends of the lead screw to limit the sliding stroke of the sleeve. Limit switches are installed at the nearest and farthest ends of the lead screw to prevent the stepper motor from driving the sleeve to move beyond the limit.

[0013] More preferably, the inner wall of the shell is fixedly connected to the limiter bracket, the limiter bracket is fixedly connected to the slide rail base, the rotating shafts at both ends of the screw are connected to the slide rail base, and the stepper motor is fixedly connected to the slide rail base; the sleeve is fixedly connected to the top plate through an I-beam, and the top plate is fixedly connected to the laser scanner; the host is fixedly connected to the screen host connecting bracket, and the screen host connecting bracket is fixedly connected to the inner wall of the shell.

[0014] The beneficial effects of the utility model are:

[0015] 1. The shell of the utility model is a rectangular parallelepiped with a slope. Two handles for easy hand-holding are provided on both sides of the shell. Buttons are embedded in the upper ends of the handles. The buttons are connected to the stepper motor through the control panel to control the movement of the line laser scanner inside the device. An embedded screen is set on the slope, and the screen is connected to the internal small host and the line laser scanner. The host is equipped with an operating system, and the system is equipped with visualization software adapted for the line laser scanner. When the device is enabled and scanning begins, the scanning position and scanning status can be observed in real time through the screen. Therefore, the utility model has better controllability and visibility.

[0016] 2. The utility model is equipped with a stepper motor, a lead screw and an I-beam structure. Limit switches are provided at both ends of the slide rail. When the stepper motor drives the sleeve to move, the limit switch will be triggered when it approaches the two ends of the slide rail, and then the stepper motor will disconnect the power supply and the movement will stop. Therefore, the utility model has a higher degree of automation during scanning measurement.

[0017] 3. The utility model connects the scanner and the stepper motor through a slide rail, uses a small host computer with a smaller volume to carry the operating system, integrates the control part, motion part, scanning part and data processing and display part of the existing scanner application, and greatly reduces the size of the equipment; at the same time, a handle is connected to the outer shell and the internal structure, and the original fixed line laser scanner is improved to a handheld type, increasing its industrial application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram from the upper left perspective of a handheld integrated device for rapid pitting scanning and measurement according to the present invention;

[0019] Figure 2 This is a schematic diagram of the present invention from an upper right perspective;

[0020] Figure 3 This is a schematic diagram of the internal structure of the present invention from an upper left perspective;

[0021] Figure 4 It is a top view schematic diagram of the internal structure of the present invention.

[0022] In the figure, 1. Housing; 2. Screen; 3. Left handle; 4. Left handle connection; 5. Right handle; 6. Right handle connection; 7. Computer switch; 8. Power switch; 9. Power socket; 10. Control button; 11. Line laser scanner; 12. Screen host connection bracket; 13. Host; 14. Limiter bracket; 15. Slide rail base; 16. Sleeve; 17. Stepper motor; 18. Left limit switch; 19. Right limit switch; 20. I-beam; 21. Top plate; 22. Control panel; 23. Screw. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technologies in 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.

[0024] refer to Figures 1 to 4As shown, the handheld integrated device for rapid pitting scanning and precise measurement in this embodiment includes: a housing 1, a screen 2, a left handle 3, a left handle connection 4, a right handle 5, a right handle connection 6, a computer switch 7, a power switch 8, a power socket 9, a control button 10, and a line laser scanner 11. The line laser scanner 11 utilizes a Keyence Gocator 2350 intelligent line laser profiler. The screen 2, left handle connection 4, right handle connection 6, computer switch 7, power switch 8, and power socket 9 are all threadedly connected to the housing 1. The left handle 3 and right handle 5 are threadedly connected to the left handle connection 4 and right handle connection 6, respectively, to facilitate gripping and use of the handheld device. Control buttons 10 are embedded above the left handle 3 and right handle 5, respectively, and are used to control the start, stop, and direction of the stepper motor 17, causing the sleeve 16 to move in both directions along the axis of the lead screw 23. The computer switch 7 is used to turn the main unit 13 on and off. The power switch 8 is used to connect and disconnect the current between the device and an external power source. The power socket 9 is used to connect an external power source to power the device.

[0025] like Figure 3 As shown, the screen host connecting bracket 12 connects and fixes the host 13 and the screen 2 through a threaded connection. The computer switch 7 is used to control the opening and closing of the host 13.

[0026] The main internal structure of the device is as follows Figure 3 、 Figure 4 As shown, the limiter bracket 14 is threadedly connected to the housing 1 for fixing the left limit switch 18 and the right limit switch 19, the limiter bracket 14 is threadedly connected to the slide rail base 15 for fixing the slide rail base 15, the slide rail base 15 is connected to the sleeve 16 through a threaded pair and a lead screw 23 for limiting the sleeve 16 to move only in the axial direction parallel to the lead screw 23, the stepper motor 17 is threadedly connected to the left side of the slide rail base 15 for fixing the stepper motor 17 and controlling the lead screw 23 to rotate about its axis, the I-beam 20 is threadedly connected to the sleeve 16, the top plate 21 is threadedly connected to the I-beam 20, the top plate 21 is threadedly connected to the line laser scanner 11, and the control panel 22 is threadedly connected to the housing 1. The above threaded connections are all for controlling the two connected parts to maintain relative positions unchanged.

[0027] The connections between the electronic components of the device are as follows: the control button 10 is connected to the control panel 22 through a wire, which is used to control the start, stop and direction of the stepper motor 17, so that the sleeve 16 moves left and right along the axis of the screw 23; the power socket 9 is connected to the power switch 8 through a wire, which is used to connect and control the disconnection and closing of the current at the power switch 8; the power switch 8 is connected to the host 13, the stepper motor 17 and the control panel 22 through wires respectively, which is used to supply power to the connected components; the computer switch 7 is connected to the host 13 through a wire, which is used to control the opening and closing of the host 13; the power switch 8 is connected to the line laser scanner 11 through a 12-core wire, which is used to supply power to the line laser scanner 11; the host 13 is connected to the line laser scanner 11 through a network cable, which is used to transmit the data scanned by the laser scanner 13 to the host 13, and the host 13 is connected to the screen 2 through a Type-C full-function data cable, which transmits the data scanned by the line laser scanner 11 to the host 13 and displays it on the screen 2.

[0028] The handheld integrated device for rapid scanning and precise measurement of pitting corrosion of this embodiment is implemented as follows:

[0029] Before use, determine the area to be scanned.

[0030] When in use, connect the power socket 9 to an external power supply; after the power is connected, press the power switch 8 to turn on the power; press the computer switch 7 to turn on the host 13; wait for the screen 2 to show that the host 13 enters the system, and click on the screen 2 to open the software adapted to the line laser scanner 11; press the control button 10 to control the sleeve 16 connected to the stepper motor 17 to reset to the nearest end of the travel on the slide rail 23; aim the laser emitted by the line laser scanner 11 at the area to be scanned, and click the start module on the screen 2; press the control button 10, and at the same time as the line laser scanner 11 starts scanning, control the sleeve 16 connected to the stepper motor 17 to move to the farthest end of the travel on the slide rail 23; the sleeve 16 moves to the far end of the slide rail 23 and touches the contact of the left limit switch 18, automatically cutting off the power, the sleeve 16 stops moving, and the scan ends; click on the adaptation software module on the screen 2 to store the scanned data in the host 13; press the computer switch 7 to turn off the host; press the power switch 8 to cut off the power; unplug the power socket, and the measurement ends.

[0031] The device in this embodiment is in the shape of a rectangular block with a slope, and has two handles on the outside for easy gripping. Compared with the existing equipment line, the overall structure reduces the overall size of the equipment, integrates the control part, motion part, scanning part and data processing and display part of the existing scanner application, and increases its industrial application scenarios.

[0032] In summary, the utility model integrates the scanning part, data processing and display part of stainless steel material pitting corrosion detection, making pitting corrosion scanning measurement simpler and more convenient and having better applicability.

[0033] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A handheld integrated device for rapid scanning and measurement of pitting corrosion, characterized in that: include: A line laser scanner (11), a host (13), a sleeve (16), a stepping motor (17), a control panel (22), and a lead screw (23), wherein the line laser scanner (11) is used for laser scanning a pitting area of ​​a device to be inspected, the host (13) is used for controlling the start and stop of the line laser scanner (11), and the host (13) is also used for receiving and transmitting scanning data of the line laser scanner (11); The line laser scanner (11) is electrically connected to the host (13), and the host (13) is electrically connected to the stepping motor (17) and the control panel (22); The line laser scanner (11) is fixedly connected to the sleeve (16), the sleeve (16) is connected to the lead screw (23) by a threaded pair, and the sleeve (16) can slide back and forth along the length direction of the lead screw (23); the stepping motor (17) drives the lead screw (23) to rotate.

2. A handheld integrated device for rapid scanning and measurement of pitting corrosion according to claim 1, characterized in that: The handheld integrated device further comprises a housing (1), wherein the housing (1) encloses the line laser scanner (11), the host (13), the sleeve (16), the stepping motor (17), the control panel (22), and the lead screw (23). The housing (1) is provided with a long strip scanning window, the length of which is not less than the reciprocating stroke of the sleeve (16) sliding along the lead screw (23), and the scanning direction of the line laser scanner (11) is from the inside to the outside of the scanning window.

3. A handheld integrated device for rapid scanning and measurement of pitting corrosion according to claim 2, characterized in that: An inclined panel is provided on the housing (1), a screen (2) is inlaid on the inclined panel, and the screen (2) is electrically connected to the host (13).

4. A handheld integrated device for rapid scanning and measurement of pitting corrosion according to claim 2, characterized in that: The housing (1) is provided with a handle, and the handle is provided with a control button (10), and the control button (10) is used to control the start and stop and the rotation direction of the stepping motor (17); the housing (1) is also provided with a computer switch (7), a power switch (8), and a power socket (9), and the host (13) is electrically connected to the control button (10), the computer switch (7), the power switch (8), and the power socket (9), respectively.

5. A handheld integrated device for rapid scanning and measurement of pitting corrosion according to claim 4, characterized in that: The handle comprises a left handle connection (4) and a right handle connection (6) arranged on two opposite side walls of the housing (1); the scanning window is arranged on the side wall between the left handle connection (4) and the right handle connection (6).

6. A handheld integrated device for rapid scanning and measurement of pitting corrosion according to claim 2, characterized in that: Limit switches are provided at both ends of the lead screw (23) for limiting the sliding stroke of the sleeve (16).

7. The handheld integrated device for rapid scanning and measurement of pitting corrosion according to claim 2, characterized in that: The inner wall of the housing (1) is fixedly connected to a limiter bracket (14), the limiter bracket (14) is fixedly connected to a slide rail base (15), the rotating shafts at both ends of the lead screw (23) are connected to the slide rail base (15), and the stepping motor (17) is fixedly connected to the slide rail base (15); The sleeve (16) is fixedly connected to a top plate (21) via an I-beam (20), and the top plate (21) is fixedly connected to the line laser scanner (11); The host (13) is fixedly connected to the screen host connection bracket (12), and the screen host connection bracket (12) is fixedly connected to the inner wall of the housing (1).

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