CN210136205U - Steel pipe corrosion scanning instrument - Google Patents
Steel pipe corrosion scanning instrument Download PDFInfo
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- CN210136205U CN210136205U CN201920956379.1U CN201920956379U CN210136205U CN 210136205 U CN210136205 U CN 210136205U CN 201920956379 U CN201920956379 U CN 201920956379U CN 210136205 U CN210136205 U CN 210136205U
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- steel pipe
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Abstract
The utility model provides a steel pipe corrosion scanner, including scanning probe and detection main part, scanning probe pass through the data line with detect the main part and connect, detect the main part and include upper casing and lower casing, be provided with the circuit board that has the MCU treater in upper casing and the lower casing, set up low noise amplifier, wave filter, phase shifter, AC exciter, audible-visual annunciator on the circuit board; the low-noise amplifier is connected with the MCU processor through a filter, the MCU processor is connected with the low-noise amplifier through a phase shifter, the MCU processor is connected with the alternating current exciter, a display screen and a touch screen are arranged on the upper shell, and the display screen, the touch screen and the audible and visual alarm are all connected with the MCU processor; the scanning probe comprises an eddy current probe, the eddy current probe is arranged on a seat body, moving wheels are arranged around the bottom of the seat body, and an arc-shaped portable handle is arranged on one side of the seat body; the detection speed is high, and the working efficiency is improved.
Description
Technical Field
The utility model relates to a boiler equipment technical field, especially a steel pipe corrodes scanning appearance.
Background
The failure of the water wall tube of the boiler is the main reason for the shutdown and the emergency repair of the power plant. When the boiler is repaired every time, it is very difficult to find the defects on the inner and outer walls of thousands of water wall tubes with the height of tens of meters. At present, in order to prevent malignant accidents, an ultrasonic thickness gauge or an ultrasonic flaw detector is mainly used for locally and selectively checking the corrosion and abrasion conditions of the water wall pipe. On one hand, preparation procedures such as descaling of the outer wall of the pipe, coating of a coupling agent and the like are required before measurement, so that the speed is low, the detection efficiency is low, and the number of measurement points is limited; on the other hand, the positions of corrosion generated on the inner wall of the water-cooled wall pipe are random, the ultrasonic detection method is effective for regular corrosion and abrasion of known flue gas scouring and the like, and the random spot check method adopted for other failure modes is prone to missing defects and leaving accident potential in operation in the future.
The boiler water wall pipe is made of a common low-carbon steel pipe, the thickness of the pipe wall is about 5-7 mm, and if defects on the inner wall of the pipe are detected, the eddy current field must penetrate through the pipe wall. A generally simple and effective method is to use magnetic saturation treatment to eliminate the influence of magnetic permeability, thereby increasing the depth of eddy current field penetration. However, the method needs to be provided with a high-power and large-volume magnetic saturation device, and is only suitable for detection in fixed occasions, such as a steel pipe production line of a factory. Another approach is to increase the eddy current field permeability by reducing the detection frequency. But as the frequency decreases, the eddy current detection sensitivity will also decrease.
Disclosure of Invention
In order to overcome the problems, the utility model aims to provide a steel pipe corrosion scanner which has fast detection speed and saves time and labor.
The utility model discloses a following scheme realizes: a steel pipe corrosion scanner comprises a scanning probe and a detection main body, wherein the scanning probe is connected with the detection main body through a data line, the detection main body comprises an upper shell and a lower shell, circuit boards with MCU processors are arranged in the upper shell and the lower shell, and a low-noise amplifier, a filter, a phase shifter, an alternating current exciter and an audible and visual alarm are arranged on the circuit boards; the low-noise amplifier is connected with the MCU processor through a filter, the MCU processor is connected with the low-noise amplifier through a phase shifter, the MCU processor is connected with the alternating current exciter, a display screen and a touch screen are arranged on the upper shell, and the display screen, the touch screen and the audible and visual alarm are all connected with the MCU processor; the scanning probe comprises an eddy current probe, the eddy current probe is arranged on a seat body, moving wheels are arranged on the periphery of the bottom of the seat body, and an arc-shaped portable handle is arranged on one side of the seat body; the eddy current probe is connected with the low noise amplifier.
Furthermore, the detection main body is also provided with a PC interface, and the PC interface is connected with the MCU processor.
Further, the detection main body is connected with a printer.
Further, the detection main body is provided with a lithium battery, and the lithium battery supplies power for the detection main body.
Further, the phase shifter is an xp22NZY type phase shifter.
Further, the MCU processor is an STM32 series MCU processor.
Furthermore, a support frame with a U-shaped cross section is arranged on the lower shell of the detection main body, and the support frame is hinged to the upper shell.
The beneficial effects of the utility model reside in that: the utility model discloses a scanning probe adopts the shape of a saddle, and the probe can be attached to water wall pipe outer wall like this, sweeps and looks into the pipe inner wall and corrodes the condition. The probe adopts the eddy current probe, the scanning method has the advantages of high detection speed, high accuracy, time and labor saving, easy implementation, no need of cleaning an oxide layer and a scale layer on the surface of the tube, no need of coating a coupling agent, and the scanning speed of 3-5 m/min; the types of defects that eddy current inspection techniques can be used to inspect include etch pits, fluid dust wash thinning, and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of a circuit structure according to the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 and 2, the utility model provides a steel pipe corrosion scanner, including scanning probe 1 and detection main part 2, scanning probe 1 is connected with detection main part 2 through data line 11, detection main part 2 includes upper casing 21 and lower casing 22, be provided with the circuit board that has MCU treater 3 in upper casing 21 and the lower casing 22, set up low noise amplifier 31, wave filter 32, move looks ware 33, exchange exciter 34, audible-visual annunciator 35 on the circuit board; the low-noise amplifier 31 is connected with the MCU processor 3 through a filter 32, the MCU processor 3 is connected with the low-noise amplifier 31 through a phase shifter 33, the MCU processor 3 is connected with an alternating current exciter 34, a display screen 23 and a touch screen 27 are arranged on the upper shell 21, and the display screen, the touch screen and the audible and visual alarm are all connected with the MCU processor; the scanning probe 1 comprises an eddy current probe 12, the eddy current probe 12 is arranged on a base body 13, moving wheels 14 are arranged on the periphery of the bottom of the base body 13, and an arc-shaped portable handle 15 is arranged on one side of the base body 13; the eddy current probe 12 is connected to the low noise amplifier. The phase shifter is an xp22NZY type phase shifter. The MCU processor is an STM32 series MCU processor. The low noise amplifier is an ADI low noise amplifier family. The filter model is a TDK filter RSHN-2010; a machine in which an ac exciter provides a working magnetic field to the scanning probe 1; the alternating current exciter model is as follows: GES6000 series. The audible and visual alarm is characterized in that the audible and visual alarm is of the type: TGSG-07. The eddy current probe 12 is a model TM0180 series eddy current probe.
The utility model discloses in, it still is provided with a PC interface 25 to detect main part 2, PC interface 25 with MCU treater 3 is connected.
Wherein a printer 26 is connected to the detection body 2. The detection main part is provided with a lithium battery 4, and the lithium battery supplies power for the detection main part. The lower shell of the detection main body 2 is provided with a support frame 24 with a U-shaped section, and the support frame is hinged to the upper shell. Therefore, the detection main body 2 can be supported by the support frame 24 and placed on a platform or a desktop, and the operation is more convenient.
The utility model discloses steel pipe corrosion scanner comprises alternating current exciter, low noise amplifier, wave filter, looks ware and MCU treater etc. and the signal that comes from scanning probe sends into the wave filter after low noise amplifier enlargies to the irrelevant electromagnetic interference in filtering scene, and utilize MCU treater control to move the ware and eliminate the measurement deviation that the pipe wall thickness is uneven, the material is uneven and probe motion etc. leads to. The main interface of the steel pipe corrosion scanner adopts a touch screen, a low-noise amplifier is arranged in the touch screen, the signal-to-noise ratio of signal transmission is improved, and the connecting line between a scanning probe and a detection main body can be increased to tens of meters; the saddle-type cambered surface scanning probe is designed to cover the whole fire-facing surface of the water wall pipe; the belt roller crawling structure is light and easy to move for scanning. When the scanning probe scans the corrosion condition of the inner wall of the pipe, the condition can be fed back to the display screen to be displayed, and the MCU processor can give an alarm through the audible and visual alarm to prompt a user.
The steel pipe corrosion scanner scans the corrosion state of the inner wall of the pipe from the outside of the pipe by adopting a low-frequency electromagnetic technology LFET, does not need a process for removing an oxide layer and a scale layer on the surface of the pipe, does not need to be coated with a coupling agent, and has a scanning speed of 3-5 m/min. Compared with the traditional eddy current inspection equipment, the steel pipe corrosion scanner has the advantages of high inspection speed, high accuracy and simpler operation, and can efficiently and accurately complete field inspection under the conditions of limited inspection time and complex inspection environment.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a steel pipe corrosion scanner which characterized in that: the device comprises a scanning probe and a detection main body, wherein the scanning probe is connected with the detection main body through a data line, the detection main body comprises an upper shell and a lower shell, circuit boards with MCU processors are arranged in the upper shell and the lower shell, and a low-noise amplifier, a filter, a phase shifter, an alternating current exciter and an audible and visual alarm are arranged on the circuit boards; the low-noise amplifier is connected with the MCU processor through a filter, the MCU processor is connected with the low-noise amplifier through a phase shifter, the MCU processor is connected with the alternating current exciter, a display screen and a touch screen are arranged on the upper shell, and the display screen, the touch screen and the audible and visual alarm are all connected with the MCU processor; the scanning probe comprises an eddy current probe, the eddy current probe is arranged on a seat body, moving wheels are arranged on the periphery of the bottom of the seat body, and an arc-shaped portable handle is arranged on one side of the seat body; the eddy current probe is connected with the low noise amplifier.
2. The steel pipe corrosion scanner of claim 1, wherein: the detection main body is further provided with a PC interface, and the PC interface is connected with the MCU processor.
3. The steel pipe corrosion scanner of claim 1, wherein: the detection main body is connected with a printer.
4. The steel pipe corrosion scanner of claim 1, wherein: the detection main part is provided with a lithium battery, and the lithium battery supplies power for the detection main part.
5. The steel pipe corrosion scanner of claim 1, wherein: the phase shifter is an xp22NZY type phase shifter.
6. The steel pipe corrosion scanner of claim 1, wherein: the MCU processor is an STM32 series MCU processor.
7. The steel pipe corrosion scanner of claim 1, wherein: the detection device is characterized in that a support frame with a U-shaped cross section is arranged on the lower shell of the detection main body, and the support frame is hinged to the upper shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920956379.1U CN210136205U (en) | 2019-06-24 | 2019-06-24 | Steel pipe corrosion scanning instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920956379.1U CN210136205U (en) | 2019-06-24 | 2019-06-24 | Steel pipe corrosion scanning instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210136205U true CN210136205U (en) | 2020-03-10 |
Family
ID=69707391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920956379.1U Active CN210136205U (en) | 2019-06-24 | 2019-06-24 | Steel pipe corrosion scanning instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210136205U (en) |
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2019
- 2019-06-24 CN CN201920956379.1U patent/CN210136205U/en active Active
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