LU503808B1 - Apparatus for measure corrosion pit depth of boiler heat surface tubes with different tube diameter - Google Patents
Apparatus for measure corrosion pit depth of boiler heat surface tubes with different tube diameter Download PDFInfo
- Publication number
- LU503808B1 LU503808B1 LU503808A LU503808A LU503808B1 LU 503808 B1 LU503808 B1 LU 503808B1 LU 503808 A LU503808 A LU 503808A LU 503808 A LU503808 A LU 503808A LU 503808 B1 LU503808 B1 LU 503808B1
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- LU
- Luxembourg
- Prior art keywords
- ruler
- depth
- telescopic
- heating surface
- measuring
- Prior art date
Links
- 230000007797 corrosion Effects 0.000 title claims abstract description 38
- 238000005260 corrosion Methods 0.000 title claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013135 deep learning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/18—Measuring arrangements characterised by the use of mechanical techniques for measuring depth
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention provides a device for measuring the corrosion pit depth of boiler heating surface tubes with different pipe diameters. The method comprises an inner wall detection device and an outer wall detection device, wherein the inner wall detection device comprises a laser sensor and an adjusting mechanism of the laser sensor; the outer wall detection device comprises a depth ruler, a circular ruler and a telescopic ruler; the telescopic ruler is abutted against the outer wall of a heated surface tube to obtain the elongation of the telescopic ruler; and the corrosion depth of the heated surface tube is determined according to the position where the depth ruler is abutted against the largest depth. The invention can quickly measure the corrosion conditions of the inner wall and the outer wall of the boiler heating surface tubes with different pipe diameters.
Description
1 © , . LU503808
Apparatus for measure corrosion pit depth of boiler heat surface tubes with different tube diameter
The invention relates to the field of pipeline nondestructive testing, in particular to a device for measuring the corrosion pit depth of boiler heating surface tubes with different pipe diameters.
Background technology
The heating surface tube is an important part of the boiler. When the boiler runs for a long time, the outer surface of the heating surface tube will be corroded and damaged in the high temperature and high pressure gas due to the bad working conditions.
After the heating surface tube is corroded, the tube wall is thinned. If the corrosion pit is not found in time, the thickness of the heating surface tube wall will be thinned greatly, and the tube wall strength will be insufficient, which will lead to the leakage of the furnace tube. For the timely discovery and measurement of corrosion, the existing tools can only use a measuring needle to measure the corrosion depth in one axial direction of a fixed pipe diameter, and it is difficult to measure the corrosion pit depth of various specifications and different pipe diameters, which is not easy to operate on site, and the error of the measurement result is also large, which often causes the misjudgment of the inspection result.
Therefore, considering the current status of measurement, it is necessary to propose a measuring device for the corrosion depth of heating surface tubes with different pipe diameters, which can ensure that the corrosion depth of heating surface tubes can be effectively and accurately measured in time for different pipe diameters, greatly improve the accuracy of judging the damage degree, and ensure the safe and stable operation of heating surface pipes.
In order to solve the technical problems that a measuring needle in the prior art can only measure the corrosion depth in one axial direction of a fixed pipe diameter, and the measurement of the corrosion pit depths of various specifications and different pipe diameters is difficult, inconvenient in field operation and large in measurement result error, the invention provides a device for measuring the corrosion pit depths of boiler heating surface pipes with different pipe diameters. The invention adopts the following technical means:
A corrosion pit depth measure device for boiler heat surface tubes with different pipe diameters comprises an inn wall detection device and an outer wall detection device, wherein that inner wall detection device comprises a laser sensor and an adjusting mechanism thereof, th&/503808 outer wall detection unit comprises a depth ruler, a circular ruler and a telescopic ruler, and the laser sensor is used for measuring inner wall data of the heating surface tubes at the same height;
The adjusting mechanism is used for adjusting the action height of the output end of the laser sensor, the lower end of the depth ruler is fixed on the annular ruler, the end part of the depth rod passes through the depth ruler, a plurality of telescopic rulers point to the central position of a heated surface tube after passing through a fixing hole formed in the annular ruler, The extension amount of the telescopic ruler is obtained by abutting the telescopic ruler against the outer wall of the heated surface tube, and the corrosion depth of the heated surface tube is determined by the maximum position of the abutting depth of the depth ruler.
The laser sensor is a mirror reflection type laser sensor, and the adjusting mechanism comprises a plurality of reflectors arranged on a laser path of the laser sensor; By adjusting the angle of the reflector, the laser sensor is adjusted to measure the inner wall of the heated surface tube to be measured at the same height.
Further, the depth gauge is fixed on the circumferential gauge through a fixing bolt, and the depth rod is mounted on the depth gauge through a locking bolt.
Further, the number of the telescopic rulers is four, wherein the first telescopic ruler and the second telescopic ruler are arranged on the annular ruler, the first telescopic ruler and the second telescopic ruler are arranged on a straight line, and preset angles are formed between the third telescopic ruler, the fourth telescopic ruler, and the first and second telescopic rulers.
Further, the inner arc surface of the annular ruler is of a semicircular structure, and the radians of the inner arc surface and the outer arc surface of the annular ruler are the same.
Furthermore, the telescopic ruler is in a rod-shaped structure, the head end of the telescopic ruler is a displaceable graduated ruler, the tail end of the telescopic rule is arranged on the annular ruler, and an elastic component for connecting the telescopic ruler and the annular ruler is arranged in a fixing hole formed in the annular ruler.
Further, the depth bar is a rod-shaped structure.
Further, the adjustment range of the depth bar is 0-20 mm.
In that invention, the inn wall detection device and the outer wall detection device are use for respectively measuring the corrosion conditions of the inner wall and the out wall of boiler heating surface tubes with different pipe diameters, and the laser sensor and an adjusting mechanism thereof can be used for rapidly measuring the corrosion condition at any position of the inner wall surface, The depth of the corrosion pit is measured by the depth rod, and th&/503808 corrosion depth of the heating surface with different pipe diameters is measured quickly and accurately.
Description of attached figures
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, Other figures may also be derived from these figures.
Fig. 1 is a structural diagram of an outer wall detection device of the present invention.
Fig. 2 is a structural diagram of the inner wall detection device of the present invention.
In the figure: 1. Depth gauge; 2. Depth rod; 3. Divided gauge; 4. Limit device; 5.
Circumferential gauge; 6. Telescopic gauge; 7. Fixing bolt; 8. Laser sensor; 9. First reflector; 10.
Second reflector; 11. Heating surface tube to be tested.
In order to make the purposes, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments, and it is obvious that the described embodiments are part of but not all of the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of the present invention.
As shown in fig. 1 and fig. 2, the embodiment of the invention discloses a device for measuring the corrosion pit depth of boiler heating surface tubes with different diameters, which comprises an inner wall detection device and an outer wall detection device, wherein the boiler heating surface tubes mainly comprise a water wall, a convection tube bundle and the like, and the inner wall detection device comprises a laser sensor 8 and an adjusting mechanism thereof;
The outer wall detection device comprises a depth gauge 1, an annular gauge 5 and a telescopic gauge 6, the laser sensor is used for measuring data of the inner walls of the heated surface tubes at the same height, the adjusting mechanism is used for adjusting the acting height of the output end of the laser sensor, the lower end of the depth gauge is fixed on the annular gauge, and the end part of a depth rod 2 penetrates through the depth gauge; A plurality of telescopic rulers point to the central position of the heated surface tube after passing through a fixed hole formé&/503808 on a circular ruler, the circular ruler is arranged on the outer ring of the heated surface tube to be arranged, scale marks are arranged on the depth ruler, the circular ruler and the telescopic rulers, and the telescopic rulers are abutted against the outer wall of a heated surface tube to obtain the elongation of the telescopic ruler The corrosion depth of the heating surface tube is determined by the reading of the scale 3 after the depth gauge abuts against the position with the maximum depth.
The laser sensor is a mirror reflection type laser sensor, and the adjusting mechanism comprises a plurality of reflectors arranged on a laser path of the laser sensor, By adjusting the angle of the reflector, the laser sensor is adjusted to circumferentially measure the inner wall of the heated surface tube to be measured at the same height. And then the data of the inner wall depression of the pipe at different heights are obtained, if the light is blocked, the scaling is serious, and the pipe needs to be replaced, and if the data obtained by the sensor is different from the standard value to a certain extent, it is determined that the inside of the pipe is corroded, and the pipe needs to be replaced as required.
In other optional implementation modes, a plurality of groups of dent data of the boiler heating surface tubes at different positions of the laser sensor can also be recorded into a storage unit, and whether the tubes with preset differences with the standard values can be continuously used is predicted through methods such as machine learning or deep learning, so as to ensure that the tubes can be normally used in the normal use process of the boiler, meanwhile, And the material loss caused by the replacement of the pipe is reduced.
The depth gauge is fixed on the annular ruler through a fixing bolt 7, and the depth rod is installed on the depth gauge through a locking bolt. The locking bolt is inserted into the depth gauge and then contacts the depth rod to connect the depth gauge with the depth rod.
The telescopic ruler is of a rod-shaped structure. The number of the telescopic rulers is four, wherein the first telescopic ruler and the second telescopic ruler are arranged on the annular ruler, and the first telescopic ruler and the second telescopic ruler are arranged on the same straight line; and preset angles are formed between the third telescopic ruler, the fourth telescopic ruler, and the first and second telescopic rulers. The telescopic ruler can stretch back and forth between the inner and outer fixing holes. In this embodiment, the third telescopic ruler and the fourth telescopic ruler have a preset angle of 15 degrees with the first telescopic ruler and the second telescopic ruler.
A scale mark is arranged on the side surface of the annular ruler and used for marking the relative position of the deep pit on the outer wall of the heating surface tube, the inner camberdd/503808 surface of the annular ruler is of a semicircular structure, and the radians of the inner cambered surface and the outer cambered surface are the same. The corresponding diameter of the inner cambered surface of the circular ruler is 18mm-159mm. 5 The telescopic ruler is in a rod-shaped structure, the head end of the telescopic ruler is a displaceable graduated ruler, the tail end of the telescopic ruler is arranged on the annular ruler, a component for connecting the telescopic ruler and the annular ruler can be an elastic component, such as a spring and the like, and the elastic component is arranged in a fixed hole formed in the annular ruler. A limiting device 4 can also be arranged at the tail end, and after the extension amount of the telescopic ruler is confirmed, the position of the telescopic ruler is fixed through the limiting device.
The depth bar is a rod-shaped structure. The adjusting range of the depth rod is 0-20mm.
The specific application method of the invention is as follows:
Detection of the inner wall of the heating surface tube: for the water wall tube, check whether the tube in the burner area is scoured by flue gas or corroded by high temperature, whether the corner tube is torn and whether there is scale blocking the water tube. Similarly, for the convection tube bundle, check whether there is scale blocking and corrosion inside it. Firstly, a water wall tube to be detected is welded and cut or a convection tube bundle is removed, after the tube is fixed, the inner wall detection device is arranged above the tube, firstly, whether the pipeline is smooth or not is checked, whether the inside is blocked or not is detected by adjusting the angles of the laser sensor, the first reflecting mirror 9 and the second reflecting mirror 10, and if the inside is blocked, it is directly determined that the tube needs to be replaced. And then detecting the internal corrosion of the unblocked pipe, and adjusting the angles of the first reflector and the second reflector to enable the emitting end of the laser sensor to sequentially detect whether corrosion pits exist on the inner wall of the pipe at different heights from top to bottom.
Detection of the outer wall of the heating surface tube: place the circular ruler at the periphery of the heating surface tube 11 to be measured, and the depth ruler is located at the position with the maximum corrosion depth. Move the four groups of telescopic rulers forward and backward until the end of the telescopic ruler pushes against the heating surface pipe, and the elongation of the front end of the four groups of telescopic rulers should be consistent, that is, the display scale should be the same. If not, gradually adjust the size of the telescopic ruler until it is consistent. Then move the depth rod to the deepest position of the corrosion pit, read the indicating value through the scale of the depth ruler, and subtract the elongation of the telescopt&/503808 ruler from the indicating value to obtain the depth of the corrosion pit on the outer wall of the heating surface tube.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; These modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A device for measuring the corrosion pit depth of boiler heating surface tubes with different diameters, comprising an inner wall detection device and an outer wall detection device, wherein the inner wall detection device comprises a laser sensor and an adjusting mechanism thereof, the outer wall detector comprises a depth gauge, a circular ruler and a telescopic ruler, and the laser sensor is used for measuring the data of the inner walls of the heating surface tubes at the same height; The adjusting mechanism is used for adjusting the acting height of the output end of the laser sensor, the lower end of the depth ruler is fixed on the annular ruler, the end part of the depth rod passes through the depth ruler, a plurality of telescopic rulers point to the central position of a heated surface tube after passing through a fixing hole formed in the annular ruler, The extension amount of the telescopic ruler is obtained by abutting the telescopic ruler against the outer wall of the heated surface tube, and the corrosion depth of the heated surface tube is determined by the maximum position of the abutting depth of the depth ruler.
2. The device for measuring the corrosion pit depth of boiler heating surface tubes with different diameters according to claim 1, wherein the laser sensor is rotatably connected to the fixing device, and the inner wall detection device detects the inner walls of different heating surface tubes by adjusting the position relationship between the fixing device and the heating surface tube to be measured. The adjust mechanism comprises a plurality of reflector arranged on a laser path of that laser sensor, and the lase sensor is adjusted to circumferentially measure the inner walls of the to-be-measured heated surface tubes at the same height by adjusting the angles of the reflectors.
3. The device for measuring the corrosion pit depth of boiler heating surface tubes with different diameters according to claim 1, wherein the depth gauge is fixed on the annular ruler through a fixing bolt, and the depth rod is installed on the depth gauge through a locking bolt.
4. The device for measuring the corrosion pit depth of boiler heating surface tubes with different diameters according to claim 1, wherein the number of the telescopic rulers is four, the first telescopic ruler and the second telescopic ruler are arranged on the annular ruler, the latter two are in a straight line, and a preset angle is formed between the third telescopic ruler and the fourth telescopic ruler, and between the first telescopic ruler and second telescopic ruler.
5. The device for measuring the corrosion pit depth of boiler heating surface tubes with different diameters according to claim 1 or 4, wherein the inner cambered surface of the circular ruler is of a semicircular structure, and the radians of the inner cambered surface and the outer cambered surface of the circular ruler are the same.
6. The device for measuring the corrosion pit depth of boiler heating surface tubes wit#505808 different pipe diameters according to claim 1 or 4, wherein the telescopic ruler is a rod-shaped structure, the head end of the telescopic ruler is a displaceable graduated ruler, the tail end of the telescopic rule is installed on the circular ruler, and the elastic part connecting the telescopic ruler and the circular ruler is arranged in a fixing hole formed on the circular ruler.
7. The device for measuring the corrosion pit depth of boiler heating surface tubes with different diameters according to claim 1, wherein the depth rod is a rod-shaped structure.
8. The device for measuring the corrosion pit depth of boiler heating surface tubes with different diameters according to claim 1, wherein the adjustment range of the depth rod is 0-20mm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211735119.4A CN116222352A (en) | 2022-12-30 | 2022-12-30 | Corrosion pit depth measuring device for heating surface pipes of boilers with different pipe diameters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU503808B1 true LU503808B1 (en) | 2023-10-02 |
Family
ID=86588357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU503808A LU503808B1 (en) | 2022-12-30 | 2023-03-31 | Apparatus for measure corrosion pit depth of boiler heat surface tubes with different tube diameter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116222352A (en) |
| LU (1) | LU503808B1 (en) |
-
2022
- 2022-12-30 CN CN202211735119.4A patent/CN116222352A/en active Pending
-
2023
- 2023-03-31 LU LU503808A patent/LU503808B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| CN116222352A (en) | 2023-06-06 |
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| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20231002 |