CN106932468B - Method for displaying mud residue accumulation distribution measurement graph on surface of tube plate - Google Patents
Method for displaying mud residue accumulation distribution measurement graph on surface of tube plate Download PDFInfo
- Publication number
- CN106932468B CN106932468B CN201511020215.0A CN201511020215A CN106932468B CN 106932468 B CN106932468 B CN 106932468B CN 201511020215 A CN201511020215 A CN 201511020215A CN 106932468 B CN106932468 B CN 106932468B
- Authority
- CN
- China
- Prior art keywords
- sludge
- test piece
- tube plate
- plate test
- eddy current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
A method for displaying a mud accumulation distribution measurement graph on the surface of a tube plate belongs to the field of graph display, and particularly relates to a method for displaying a mud accumulation distribution measurement graph on the surface of a tube plate. The method comprises the following steps: instrument parameters and preparation, step two: identifying a tube plate test piece signal, and step three: identifying sludge signals, and step four: the method for calculating the height of the sludge comprises the following five steps: measuring and recording the actual sludge height, and a sixth step: a graphical display method. The method is visual and simple, and is convenient for workers to clearly master the distribution and the state of the secondary side sludge.
Description
Technical Field
The invention belongs to the field of graph display, and particularly relates to a graph display method for measuring accumulation and distribution of sludge on the surface of a tube plate.
Background
The steam generator is a key component for the integrity of a primary circuit pressure boundary of the nuclear power station, and simultaneously, the steam generator is a heat exchange device for transferring heat in a primary circuit coolant to secondary circuit feed water to generate saturated steam to be supplied to a secondary circuit power device, and the accumulation degree of secondary side sludge of the steam generator seriously influences the heat exchange performance of the steam generator and even directly influences the operating power and the service life of the nuclear power station.
The method for displaying the sludge accumulation distribution measurement graph on the surface of the secondary side tube plate of the steam generator is characterized in that data modeling is carried out according to geometric parameters of a heat transfer tube and a support structure of the steam generator, the sludge accumulation data of the secondary side tube plate of the heat transfer tube measured by the eddy current detection method are counted, so that the sludge accumulation distribution condition on the secondary side is obtained, the different accumulation degree conditions are distinguished by colors, and the sludge accumulation heights of different position points on the surface of the tube plate are given. The method can visually reflect the sludge accumulation condition of the secondary side of the tube plate of the steam generator, is convenient for the development of sludge washing and maintenance of the steam generator, and reduces the maintenance cost. The traditional measuring method is only limited to measuring the sludge accumulation height of the outer wall of the heat transfer pipe of the steam generator and does not count the sludge accumulation distribution condition of the secondary side of the tube plate of the steam generator.
Disclosure of Invention
The invention aims to: vortex measurement is carried out on all or every heat transfer pipe in the range is piled up to secondary side tube sheet mud through to obtain the height value is piled up to the secondary side mud of every heat transfer pipe place department and heat transfer pipe positional information. And establishing a plane model of the distribution of the tube plate and the heat transfer tube of the steam generator. And displaying the color of the sludge accumulation height value in the plane of the tube plate of the model so as to draw a sludge distribution graph. .
The technical scheme of the invention is as follows: the method for displaying the sludge accumulation distribution measurement graph on the surface of the tube plate comprises
The method comprises the following steps: instrument parameters and preparation
Installing a heat transfer pipe on a pipe plate test piece, and setting the sampling rate, the detection frequency and the moving speed of a probe of the vortex flow meter;
step two: tube sheet test piece signal identification
Performing an eddy current test on the tube plate test piece provided with the heat transfer tube in the step one; using an eddy current probe to move at a constant speed in the heat transfer pipe, and recording an eddy current signal A of the tube plate test piece in the moving process; when the probe is moved to the secondary side surface of the tube plate test piece, recording a secondary side surface eddy current signal A1 of the tube plate test piece at the moment; finding the position corresponding to the eddy current signal A1 on the secondary side surface of the tube plate test piece in the eddy current signal A of the tube plate test piece;
step three: sludge signal identification
Filling sludge on the secondary side surface provided with the heat transfer pipe and the pipe plate test piece, wherein the surface of the sludge is parallel to the surface of the pipe plate test piece after the sludge is filled; using an eddy current probe to move at a constant speed in the heat transfer pipe, recording an eddy current signal B of the pipe plate test piece filled with the sludge in the moving process, and finding a corresponding position of the upper surface of the sludge in the signal graph; moving the probe to the position of the upper surface of the sludge of the tube plate test piece, and recording an eddy current signal B1 of the upper surface of the sludge at the moment;
step four: method for calculating sludge height
Finding a secondary side surface signal A1 of the tube plate test piece in the eddy current signal B graph of the tube plate test piece filled with the sludge, and recording data points of the signals; finding out a sludge upper surface eddy current signal B1 in an eddy current signal B graph of the tube plate test piece filled with sludge, and recording data points of the signal; calculating the distance between the two points according to the data point difference between B1 and A1, the eddy current instrument sampling rate and the probe moving speed given in the step one;
step five: measurement and recording of actual sludge height
Collecting eddy current signals of all heat transfer tubes and tube plate test pieces in a steam generator; and repeating the first step to the fourth step, and calculating the sediment height of the sludge at the position of each heat transfer pipe.
And in the third step, filling sludge with the thickness not less than 10mm on the surface of the secondary side provided with the heat transfer pipe and the pipe plate test piece.
Further comprises the following steps: the graph display method comprises the following steps:
in a computer, establishing a simulated plane graph by taking the secondary side surface of the tube plate test piece as a plane; defining an X axis and a Y axis of a plane figure in an actual heat transfer pipe arrangement mode, wherein the X axis of the plane figure is a row direction, and the Y axis is a column direction; marking the position of each heat transfer pipe in a simulated plane graph of the secondary side surface of the tube plate test piece; for each heat transfer pipe position on the plane graph, different colors are used for representing the sediment height value of the sludge; the numerical value of the sludge accumulation height at the position of the heat transfer pipe is consistent with the actual measurement result; finally obtaining a plane distribution diagram of the sediment height of the sludge.
In the fourth step, the distance (B1 data point-a 1 data point) speed/sampling rate,
the distance between the two points is equal to the deposition height of the sludge on the secondary side surface of the tube plate.
The invention has the following remarkable effects: the distribution condition of the sludge on the surface of the tube plate can be displayed in a plane graph, so that the distribution condition of the sludge is more visual and concise, and workers can clearly master the distribution and the state of the secondary side sludge.
Detailed Description
The method for displaying the sludge accumulation distribution measurement graph on the surface of the tube plate comprises the following steps:
the method comprises the following steps: instrument parameters and preparation
Installing a heat transfer pipe on a pipe plate test piece, and setting the sampling rate, the detection frequency and the moving speed of a probe of the vortex flow meter;
step two: tube sheet test piece signal identification
Performing an eddy current test on the tube plate test piece provided with the heat transfer tube in the step one; using an eddy current probe to move at a constant speed in the heat transfer pipe, and recording an eddy current signal A of the tube plate test piece in the moving process; when the probe is moved to the secondary side surface of the tube plate test piece, recording a secondary side surface eddy current signal A1 of the tube plate test piece at the moment; finding the corresponding position of the eddy current signal A1 on the secondary side surface of the tube plate test piece in the eddy current signal A of the tube plate test piece
Step three: sludge signal identification
Filling sludge with a thickness of not less than 10mm on the surface of the secondary side provided with the heat transfer pipe and the pipe plate test piece, wherein the surface of the sludge is parallel to the surface of the pipe plate test piece after the sludge is filled; using an eddy current probe to move at a constant speed in the heat transfer pipe, recording an eddy current signal B of the pipe plate test piece filled with the sludge in the moving process, and finding a corresponding position of the upper surface of the sludge in the signal graph; moving the probe to the position of the upper surface of the sludge of the tube plate test piece, and recording an eddy current signal B1 of the upper surface of the sludge at the moment;
step four: method for calculating sludge height
Finding a secondary side surface signal A1 of the tube plate test piece in the eddy current signal B graph of the tube plate test piece filled with the sludge, and recording data points of the signals; finding out a sludge upper surface eddy current signal B1 in an eddy current signal B graph of the tube plate test piece filled with sludge, and recording data points of the signal; calculating the distance between the two points according to the data point difference between B1 and A1, the eddy current instrument sampling rate and the probe moving speed given in the step one; wherein:
distance (B1 data point-a 1 data point) speed/sample rate
The distance between the two points is equal to the deposition height of the sludge on the secondary side surface of the tube plate;
step five: measurement and recording of actual sludge height
Collecting eddy current signals of all heat transfer tubes and tube plate test pieces in a steam generator; repeating the first step to the fourth step, and calculating the sediment height of the sludge at the position of each heat transfer pipe;
step six: graphic display method
In a computer, establishing a simulated plane graph by taking the secondary side surface of the tube plate test piece as a plane; defining an X axis and a Y axis of a plane figure in an actual heat transfer pipe arrangement mode, wherein the X axis of the plane figure is a row direction, and the Y axis is a column direction; marking the position of each heat transfer pipe in a simulated plane graph of the secondary side surface of the tube plate test piece; for each heat transfer pipe position on the plane graph, different colors are used for representing the sediment height value of the sludge; the numerical value of the sludge accumulation height at the position of the heat transfer pipe is consistent with the actual measurement result; finally obtaining a plane distribution diagram of the sediment height of the sludge.
Claims (2)
1. The method for displaying the sludge accumulation distribution measurement graph on the surface of the tube plate is characterized by comprising the following steps of: comprises that
The method comprises the following steps: instrument parameters and preparation
Installing a heat transfer pipe on a pipe plate test piece, and setting the sampling rate, the detection frequency and the moving speed of a probe of the vortex flow meter;
step two: tube sheet test piece signal identification
Performing an eddy current test on the tube plate test piece provided with the heat transfer tube in the step one; using an eddy current probe to move at a constant speed in the heat transfer pipe, and recording an eddy current signal A of the tube plate test piece in the moving process; when the probe is moved to the secondary side surface of the tube plate test piece, recording a secondary side surface eddy current signal A1 of the tube plate test piece at the moment; finding the position corresponding to the eddy current signal A1 on the secondary side surface of the tube plate test piece in the eddy current signal A of the tube plate test piece;
step three: sludge signal identification
Filling sludge on the secondary side surface provided with the heat transfer pipe and the pipe plate test piece, wherein the surface of the sludge is parallel to the surface of the pipe plate test piece after the sludge is filled; using an eddy current probe to move at a constant speed in the heat transfer pipe, recording an eddy current signal B of the pipe plate test piece filled with the sludge in the moving process, and finding a corresponding position of the upper surface of the sludge in the signal graph; moving the probe to the position of the upper surface of the sludge of the tube plate test piece, and recording an eddy current signal B1 of the upper surface of the sludge at the moment;
step four: method for calculating sludge height
Finding a secondary side surface signal A1 of the tube plate test piece in the eddy current signal B graph of the tube plate test piece filled with the sludge, and recording data points of the signals; finding out a sludge upper surface eddy current signal B1 in an eddy current signal B graph of the tube plate test piece filled with sludge, and recording data points of the signal; calculating the distance between the two points according to the data point difference between B1 and A1, the eddy current instrument sampling rate and the probe moving speed given in the step one;
step five: measurement and recording of actual sludge height
Collecting eddy current signals of all heat transfer tubes and tube plate test pieces in a steam generator; repeating the first step to the fourth step, and calculating the sediment height of the sludge at the position of each heat transfer pipe;
further comprises the following steps: the graph display method comprises the following steps:
in a computer, establishing a simulated plane graph by taking the secondary side surface of the tube plate test piece as a plane; defining an X axis and a Y axis of a plane figure in an actual heat transfer pipe arrangement mode, wherein the X axis of the plane figure is a row direction, and the Y axis is a column direction; marking the position of each heat transfer pipe in a simulated plane graph of the secondary side surface of the tube plate test piece; for each heat transfer pipe position on the plane graph, different colors are used for representing the sediment height value of the sludge; the numerical value of the sludge accumulation height at the position of the heat transfer pipe is consistent with the actual measurement result; finally obtaining a plane distribution diagram of the sediment height of the sludge;
in the fourth step, the distance (B1 data point-a 1 data point) speed/sampling rate,
the distance between the two points is equal to the deposition height of the sludge on the secondary side surface of the tube plate.
2. The method for displaying the sludge accumulation distribution measurement pattern on the surface of the tube plate according to claim 1, wherein the method comprises the following steps: and in the third step, filling sludge with the thickness not less than 10mm on the surface of the secondary side provided with the heat transfer pipe and the pipe plate test piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511020215.0A CN106932468B (en) | 2015-12-30 | 2015-12-30 | Method for displaying mud residue accumulation distribution measurement graph on surface of tube plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511020215.0A CN106932468B (en) | 2015-12-30 | 2015-12-30 | Method for displaying mud residue accumulation distribution measurement graph on surface of tube plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106932468A CN106932468A (en) | 2017-07-07 |
| CN106932468B true CN106932468B (en) | 2020-03-17 |
Family
ID=59441160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511020215.0A Active CN106932468B (en) | 2015-12-30 | 2015-12-30 | Method for displaying mud residue accumulation distribution measurement graph on surface of tube plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106932468B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687193A (en) * | 2019-10-18 | 2020-01-14 | 岭澳核电有限公司 | Method for measuring sludge accumulation of heat transfer pipe support plate of steam generator of nuclear power station |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4876506A (en) * | 1988-06-13 | 1989-10-24 | Westinghouse Electric Corp. | Apparatus and method for inspecting the profile of the inner wall of a tube employing a wall follower and an eddy current probe |
| JP2012159471A (en) * | 2011-02-02 | 2012-08-23 | Mitsubishi Heavy Ind Ltd | Inspection method and inspection device of heat-transfer pipe |
| CN104239592A (en) * | 2014-05-26 | 2014-12-24 | 阳江核电有限公司 | Excel-based tube plate diagram generating method during nuclear power steam generator heat exchanging pipe detection |
| CN104748662A (en) * | 2013-12-30 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Measuring method for scale deposit thickness on external wall of heat transferring pipe based on eddy current testing signals |
| CN104748666A (en) * | 2013-12-30 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Deep defect quantifying method based on eddy rotating probe signal |
-
2015
- 2015-12-30 CN CN201511020215.0A patent/CN106932468B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4876506A (en) * | 1988-06-13 | 1989-10-24 | Westinghouse Electric Corp. | Apparatus and method for inspecting the profile of the inner wall of a tube employing a wall follower and an eddy current probe |
| JP2012159471A (en) * | 2011-02-02 | 2012-08-23 | Mitsubishi Heavy Ind Ltd | Inspection method and inspection device of heat-transfer pipe |
| CN104748662A (en) * | 2013-12-30 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Measuring method for scale deposit thickness on external wall of heat transferring pipe based on eddy current testing signals |
| CN104748666A (en) * | 2013-12-30 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Deep defect quantifying method based on eddy rotating probe signal |
| CN104239592A (en) * | 2014-05-26 | 2014-12-24 | 阳江核电有限公司 | Excel-based tube plate diagram generating method during nuclear power steam generator heat exchanging pipe detection |
Non-Patent Citations (1)
| Title |
|---|
| 核电站蒸汽发生器传热管缺陷涡流检测数据分析;朱志斌 等;《无损检测》;20130410;第35卷(第4期);第15-17页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106932468A (en) | 2017-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109612406B (en) | Random detection method for ring splicing quality of splicing pipe pieces of shield tunnel | |
| CN103486984B (en) | The detection method of profile right alignment in a kind of wind-tunnel | |
| CN203502013U (en) | Flatness detection apparatus | |
| CN102589492B (en) | A kind of large-scale curved flexible detection device | |
| CN107990856A (en) | A kind of volumetric position error detection method for outranging workpiece | |
| CN106932468B (en) | Method for displaying mud residue accumulation distribution measurement graph on surface of tube plate | |
| CN203572475U (en) | Cement concrete air shrinkage and temperature shrinkage strain data acquisition device | |
| CN201382763Y (en) | Bus detecting tooling | |
| CN102590216B (en) | Measurement method for positioning of defects of tank bottom of vertical steel oil tank | |
| CN103033083B (en) | Hole strip, tooling for detecting hole strip and method for processing and detecting hole strip | |
| CN203606075U (en) | Axial centroid measuring instrument for large-size large-tonnage cylindraceous or cylindrical workpiece | |
| CN103017702A (en) | Method and device for three-coordinate measurement | |
| CN112815898A (en) | Method for converting ship three-dimensional data measurement into two-dimensional data measurement based on coordinate system | |
| CN202119830U (en) | Power testing device of PTC heating pipe | |
| CN103743384A (en) | Method for measuring installation level of base by using equal height ruler | |
| CN203037191U (en) | Radiating tube flaring depth measuring tool | |
| CN206683526U (en) | For measuring the device of steam turbine low-lying area nest size | |
| CN202110055U (en) | Gas flow field testing system | |
| CN104713459A (en) | Double-sphere measurement method for counter bore angle | |
| CN202195793U (en) | Three-phase electrode circle center positioning device for electric furnace and ladle refining furnace | |
| CN203928947U (en) | For the pick-up unit of Z parking brake entrucking state | |
| CN113804130A (en) | Laser tracker-based MARK III type liquid cargo tank bulkhead surface flatness measuring method | |
| CN111609779A (en) | Rapid acceptance device and detection method for anchor backing plate | |
| CN105806218A (en) | Tube plate tube hole measuring method based on photogrammetric technology | |
| CN207036029U (en) | A kind of conduit end face detector perpendicularity detector tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |