CN117517102A - Rupture disk deformation testing and life predicting method based on three-dimensional scanning - Google Patents
Rupture disk deformation testing and life predicting method based on three-dimensional scanning Download PDFInfo
- Publication number
- CN117517102A CN117517102A CN202410008285.7A CN202410008285A CN117517102A CN 117517102 A CN117517102 A CN 117517102A CN 202410008285 A CN202410008285 A CN 202410008285A CN 117517102 A CN117517102 A CN 117517102A
- Authority
- CN
- China
- Prior art keywords
- rupture disk
- deformation
- scanning
- dimensional
- target
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 230000008569 process Effects 0.000 claims abstract description 17
- 238000011156 evaluation Methods 0.000 claims abstract description 7
- 238000011056 performance test Methods 0.000 claims abstract description 7
- 238000007781 pre-processing Methods 0.000 claims abstract description 6
- 230000009172 bursting Effects 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 5
- 238000002310 reflectometry Methods 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims 2
- 238000005422 blasting Methods 0.000 abstract description 5
- 230000007246 mechanism Effects 0.000 description 12
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- -1 stainless steel Chemical class 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
-
- 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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- Computer Graphics (AREA)
- Software Systems (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The embodiment of the application discloses a method for testing deformation and predicting service life of a rupture disk based on three-dimensional scanning, which belongs to the technical field of safety relief and comprises the steps of establishing a deformation-fatigue service life database, preprocessing a target rupture disk before scanning, designing a fatigue performance test of the target rupture disk based on the actual working condition of the target rupture disk, scanning the target rupture disk in the test process by using a laser three-dimensional scanner to obtain an accurate three-dimensional model of the target rupture disk, calculating and evaluating the deformation of the outer surface of the rupture disk according to the accurate three-dimensional model of the rupture disk, and finally comparing a calculation and evaluation result with corresponding data in the deformation-fatigue service life database to obtain the residual fatigue life and the residual blasting pressure of the target rupture disk.
Description
Technical Field
The application belongs to the technical field of safety relief, and particularly relates to a rupture disk deformation testing and life predicting method based on three-dimensional scanning.
Background
The burst disc device is required to accurately, safely and rapidly release the pressure in equipment so as to prevent serious secondary accidents caused by overpressure damage of a container, the stability of the burst pressure is the most important technical index of the burst disc, and factors influencing the stability of the burst pressure are many, such as damage, corrosion, dirt, temperature fluctuation or misoperation, so that the burst disc needs to be detected regularly, and in some pressure containers with the internal pressure in a fluctuation state usually, the burst disc is subjected to fluctuation load for a long time, so that the burst disc is often caused to generate tiny deformation, the burst pressure of the burst disc is abnormal, the equipment is further caused to have potential safety hazards, and the micro deformation caused by fatigue damage is often difficult to be found and is difficult to detect by a common detection method.
The national execution standard of the rupture disc requires regular inspection of the rupture disc, whether deformation exists or not is required to be checked by naked eyes of a person, meanwhile, whether the rupture disc needs to be forcedly replaced within 2 to 3 years of use is specified, the detection method can only observe whether the rupture disc has damage and large deformation or not, the tiny deformation caused by fatigue cannot be detected, meanwhile, the practical situation is not considered in the forceful replacement period, and for some rupture discs with stable use conditions, the fatigue life remains greatly within 2 to 3 years, and the forceful replacement causes certain waste; in some repeatedly loaded pressure containers, such as a high-pressure reaction kettle or mobile high-pressure storage equipment, the rupture disc is subjected to cyclic load close to the allowable operating pressure for a long time, and enters a low-cycle fatigue working condition, so that the service life of the rupture disc is greatly reduced; meanwhile, the bursting pressure of the bursting disc can be changed along with the increase of the cycle times, so that the bursting disc is blasted in advance or blasted in a delayed manner, and the pressure vessel faces a huge potential safety hazard, so that the fatigue and service life of the bursting disc are not negligible in actual production.
At present, a contact patch sensor is mostly adopted for a safety monitoring device of the rupture disk, and a lead is used for signal transmission, and the detection mode inevitably has a certain influence on the blasting performance of the rupture disk due to the fact that the detection mode is directly contacted with the surface of a diaphragm of the rupture disk; at the same time, the patch sensor can fall off or chip during blasting, thereby generating a large amount of metal fragments, which cannot be used in some working conditions where the generation of fragments is not allowed; in addition, the data conductors of the sensor need to be perforated in the holder to achieve physical connection, which can lead to the tightness of the rupture disc being affected, and meanwhile, the rupture disc with a special position is difficult to place and scan the three-dimensional scanner, so that the problem that the fatigue and service life conditions of the rupture disc during the service period cannot be accurately measured can be solved.
Disclosure of Invention
In order to solve the problems and the technical defects, the embodiment of the application adopts the following technical scheme that the method for testing the deformation quantity and predicting the service life of the rupture disk based on three-dimensional scanning comprises the following steps:
step 1, carrying out a certain cycle number experiment on rupture discs of different types, recording deformation and bursting pressure variation, and establishing a deformation-fatigue life database;
step 2, preprocessing the target rupture disk before scanning;
step 3, designing a fatigue performance test of the target rupture disk based on the actual working condition of the target rupture disk, and scanning the target rupture disk in the test process by using a laser three-dimensional scanner to obtain an accurate three-dimensional model of the target rupture disk;
step 4, calculating and evaluating the deformation quantity of the outer surface of the rupture disc according to the accurate three-dimensional model of the rupture disc;
and step 5, comparing the calculated and evaluated result with corresponding data in the deformation quantity-fatigue life database to obtain the residual fatigue life and residual bursting pressure of the target bursting disc.
Preferably, the pretreatment comprises clamping and fixing the target rupture disk by using a flange plate, and fixing a scanner bracket provided with a laser three-dimensional scanner on the flange plate, wherein an ocular lens of the laser three-dimensional scanner is parallel to the target rupture disk.
Furthermore, before the flange plate is used for clamping and fixing the target rupture disk, a clamp holder for clamping the rupture disk and the flange plate are required to be sprayed, so that the reflectivity of the metal surface is increased.
Furthermore, after the spraying is finished, the scanned object is required to be pasted, the scanned object is conveniently scanned for splicing, and the pasting position is the surface of the flange plate.
Preferably, the scanning of the target rupture disc in the test process by using the laser three-dimensional scanner is to scan the two states of the target rupture disc before and after a certain time, collect deformation in the test process of the target rupture disc, obtain two groups of rupture disc three-dimensional models of the same rupture disc in different time, and compare the two groups of rupture disc three-dimensional models.
Furthermore, when the two groups of three-dimensional models of the rupture discs are compared, a reference surface is required to be selected to align the two groups of the three-dimensional models of the rupture discs, the reference surface does not displace or deform in the use process of the rupture discs, the reference surface and the rupture discs are scanned simultaneously during scanning, and the two groups of the three-dimensional models of the rupture discs are aligned according to the reference surface.
Still further, the datum surface is the outer surface of a flange that clamps the rupture disc clamp.
Preferably, the computational evaluation includes calculating a change in dome height, calculating a stretch of a section line, calculating a normal deformation of all scan points of the rupture disc surface, or calculating a deformation in a single direction.
Further, the calculating the change of the height of the arch top part, the firstThe secondary deformation condition can be changed by the arch height +.>The calculation formula is as follows:
wherein,for the original arch height +>Is->The camber of the secondary measurement.
Further, the normal deformation condition of all scanning points on the surface of the rupture disc is calculated by scanning measurement, a scanning model comprises millions of grids, the average deformation of the rupture disc is calculated by using a weighted average, and a calculation formula is as follows:
wherein,for deformation amount->Median among intervals, & gt>Is->Weight of individual interval->Is the total unit number.
Compared with the prior art, the beneficial effects of the embodiment of the application are as follows:
(1) According to the method for predicting the service life of the rupture disk by measuring the deformation quantity of the rupture disk through three-dimensional scanning on the premise that the normal use of the rupture disk is not affected, the influence of a traditional measuring mode on the sealing performance and the blasting performance of the rupture disk is avoided, and the problem that blasting fragments are generated when the deformation is measured by using a strain sensing patch is avoided;
(2) The method for predicting the fatigue life of the rupture disc by using the three-dimensional scanning can prevent the rupture disc from being blasted in advance due to fatigue, eliminates potential safety hazards, provides guidance for the replacement period of the rupture disc more normally and scientifically, quantifies the requirement of the execution standard for observing the deformation of the rupture disc, and checks the trauma condition of the rupture disc while checking the fatigue life of the rupture disc, thereby achieving the effects of prediction and early warning;
(3) The three-dimensional scanner support based on the rupture disk is designed, the scanner support comprises an upper support and a lower support, the angle between the upper support and the lower support is adjusted, the support can adapt to flanges with different calibers, and meanwhile, the upper support and the lower support form a four-bar mechanism which is symmetrical up and down with the flange and the scanner, so that the scanner and the rupture disk are ensured to be parallel to each other when the scanner is centered, and the scanner can scan the rupture disk at any position through the support and the corresponding clamping mechanism.
Drawings
In order to more clearly illustrate the technical solutions in embodiments or examples of the present application, the drawings that are required for use in the embodiments or examples description will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application and therefore should not be construed as limiting the scope, and that other drawings may be obtained according to the drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is a schematic diagram of method steps according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of a method according to an embodiment of the present application;
FIG. 3 is a diagram of a rupture disc deformation measurement device based on three-dimensional scanning in accordance with an embodiment of the present application;
FIG. 4 is a diagram illustrating the structure of a first bracket, a second bracket and a friction lock according to an embodiment of the present application;
fig. 5 is a schematic view of a second bracket, a third bracket and a locking structure according to an embodiment of the present application;
fig. 6 is a comparative schematic of rupture disc scan results of an embodiment of the present application.
In the figure: 1. rupture disk; 2. a flange plate; 3. a holder; 4. a locking bolt; 5. a first bracket; 501. a first bracket bar; 502. a clamping piece; 6. a friction locking mechanism; 601. a first friction pad; 602. a nut; 603. a first bolt; 7. a second bracket; 8. a locking device; 801. a butterfly nut; 802. a second bolt; 803. a second friction pad; 9. a third bracket; 901. scanner fixing bolts; 10. a laser three-dimensional scanner.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments, and that the components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in various different configurations.
Thus, the following detailed description of the embodiments of the present application, provided in the accompanying drawings, is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application, based on which all other embodiments that may be obtained by one of ordinary skill in the art without making inventive efforts are within the scope of this application.
Embodiment 1. As shown in FIG. 1 and FIG. 2, a method for testing deformation and predicting service life of a rupture disk based on three-dimensional scanning is provided, wherein a deformation and burst pressure change are recorded by carrying out a certain cycle number experiment on rupture disks of different types, a deformation-fatigue life database is established, then a target rupture disk is preprocessed before scanning, then a fatigue performance test of the target rupture disk is designed based on the actual working condition of the target rupture disk, a laser three-dimensional scanner is used for scanning the target rupture disk in the test process to obtain an accurate three-dimensional model of the target rupture disk, then the deformation of the outer surface of the rupture disk is calculated and evaluated according to the accurate three-dimensional model of the rupture disk, and finally the calculated and evaluated result is compared with corresponding data in the deformation-fatigue life database to obtain the residual fatigue life and the residual burst pressure of the target rupture disk, and the method comprises the following steps:
and carrying out certain cycle times experiments on the rupture discs of different types, recording deformation and burst pressure variation, and establishing a deformation-fatigue life database.
The method comprises the steps of pre-processing a target rupture disc before scanning, wherein the pre-processing comprises the steps of clamping and fixing the target rupture disc by using a flange plate, fixing a scanner bracket provided with a laser three-dimensional scanner on the flange plate, enabling an eyepiece of the laser three-dimensional scanner to be parallel to the target rupture disc, spraying a clamp holder for clamping the target rupture disc and the flange plate before clamping and fixing the target rupture disc by using the flange plate, increasing the reflectivity of a metal surface, and after spraying, carrying out point pasting on a scanned object, facilitating the split scanning for splicing, wherein the position of the point pasting is the surface of the flange plate.
The fatigue performance test of the target rupture disk is designed based on the actual working condition of the target rupture disk, a laser three-dimensional scanner is used for scanning the target rupture disk in the test process to obtain an accurate three-dimensional model of the target rupture disk, the laser three-dimensional scanner is used for scanning the target rupture disk in the test process to respectively scan two states of the target rupture disk before and after a certain time, deformation in the test process of the target rupture disk is collected to obtain two groups of three-dimensional models of the rupture disk in the same rupture disk in different times, and the two groups of three-dimensional models of the rupture disk are compared.
When the two groups of the three-dimensional models of the rupture discs are compared, a reference surface is required to be selected to align the two groups of the three-dimensional models of the rupture discs, the reference surface does not displace and deform in the use process of the rupture discs, the reference surface and the rupture discs are scanned simultaneously during scanning, the two groups of the three-dimensional models of the rupture discs are aligned according to the reference surface, and the reference surface adopts the outer surface of the flange plate for clamping the rupture disc clamp holder.
And calculating and evaluating the deformation quantity of the outer surface of the rupture disc according to the accurate three-dimensional model of the rupture disc, wherein the calculating and evaluating comprises the steps of calculating the change of the height of the arch top, calculating the stretching condition of the section line, and calculating the normal deformation condition or the deformation condition along a single direction of all scanning points on the surface of the rupture disc.
Calculate the change in crown height, the firstThe secondary deformation condition can be changed by the arch height +.>The calculation formula is as follows:
wherein,for the original arch height +>Is->The camber of the secondary measurement.
The normal deformation condition of all scanning points on the surface of the rupture disk is calculated by scanning measurement, a scanning model comprises millions of grids, the average deformation of the scanning model is calculated by using a weighted average value, and a calculation formula is as follows:
wherein,for deformation amount->Median among intervals, & gt>Is->Weight of individual interval->Is the total unit number.
And comparing the calculated evaluation result with corresponding data in the deformation quantity-fatigue life database to obtain the residual fatigue life and residual bursting pressure of the target bursting disc.
It can be seen from the above description that, in this example, by measuring the tiny deformation of the rupture disc before and after use to achieve the purpose of detecting whether the rupture disc has a potential safety hazard, the special scanner bracket structure is designed, the problem that the rupture disc is difficult to scan at a special position and the problem of the scanning precision of the rupture disc are solved, meanwhile, the deformation and fatigue life database of the rupture disc is built, the deformation amount of the rupture disc is collected in the regular inspection of the rupture disc, the fatigue life of the rupture disc can be predicted on the premise of not affecting the performance of the rupture disc, when the detection result shows that the life of the rupture disc reaches the early warning value, the rupture disc needs to be replaced, and the rupture disc can be added in the regular inspection of the rupture disc, so that the fatigue health condition of the rupture disc can be detected conveniently and rapidly.
Embodiment 2. A burst disk deformation measuring device based on three-dimensional scanning mainly comprises a burst disk, a clamp holder, a flange plate, a scanner bracket with a clamp and a laser three-dimensional scanner.
The scanner bracket with the clamp comprises a scanner bracket, a flange clamping mechanism and a locking mechanism, wherein the flange clamping mechanism comprises clamps and bolt locking devices, the clamps are applicable to flange thicknesses with different diameters, and the scanner bracket provided with the three-dimensional scanner can be ensured to be fixed on the flange by clamping the rupture disc, so that the problem of scanning the rupture disc at any position is solved; the locking device consists of a friction gasket and a pre-tightening bolt, and the friction gasket provides enough friction force for the joint of the bracket so that the bracket can freely move and be fixed at any position, thereby achieving the effect of facilitating centering and focusing of the scanner; the scanner bracket is composed of an upper part and a lower part, the angle between the upper part and the lower part is adjusted, the scanner bracket can adapt to flanges with different calibers, and meanwhile, the upper part and the lower part of the bracket, the flanges and the scanner form a four-bar mechanism which is vertically symmetrical, so that when the scanner is centered, the scanner and the rupture disk are ensured to be parallel.
The deformation amount testing method comprises three parts: pretreatment before scanning, rupture disc scanning and deformation evaluation.
Wherein, the pretreatment mainly comprises two steps: the first step requires spraying of the rupture disk and other scan lines. Because the materials of the rupture disc, the clamp holder and the flange plate are mostly metals such as stainless steel, the surface is smooth, the refractive index is higher, and light is not easy to reflect into the ocular lens when laser scanning is used, so that the surface of the rupture disc needs to be sprayed. The spraying can increase the reflectivity of the metal surface and does not influence the performance of the rupture disk; the second step needs to carry out the paste point to the object that sweeps, can't scan once to some large-scale rupture disk and type, need scan in batches and splice, consequently need to sweep the object and paste the point in order to splice, paste the point requirement can not have regularity and paste the point and can not be in the position of face-to-face transition or the too big position of camber, is its flange surface to the position that the rupture disk is fit for the paste point, can avoid causing the damage to the arch face.
The pretreated rupture disk can be scanned by using a laser scanner, and a precise three-dimensional model of the rupture disk is obtained through corresponding software of a computer and the scanner. And respectively completing the scanning work of the rupture disk after a certain time of pre-use before use, and obtaining three-dimensional models of the same rupture disk at different times, so as to measure the deformation quantity of the rupture disk. When the computer is used for comparing the two groups of models, the reference surface is required to be selected to align the two groups of rupture disc models, the reference surface is required to be free from displacement and deformation all the time in the use process of the rupture disc, the rupture disc is convenient to scan with the rupture disc at the same time, and in the structure of the rupture disc device, the outer surface of the flange responsible for clamping the rupture disc holder is of a stable plane structure, the surface precision is high, the flatness is good, and the rupture disc device is suitable for being used as the reference surface for scanning.
The deformation amount of the outer surface of the rupture disc can be evaluated after the alignment of the reference surface is completed, and various deformation evaluation methods are needed, including the calculation of the change of the height of the arch top, the calculation of the stretching condition of the section line, the calculation of the normal deformation condition of all scanning points on the surface of the rupture disc or the deformation condition along a certain direction.
As shown in fig. 6, a in fig. 6 is a reference plane (upper flange surface); b is the outer surface of the rupture disk after working for a certain time; c is the original outer surface of the rupture disk.
For rupture discs with different structures, a rupture disc deformation amount evaluation method, such as a normal type rupture disc with a positive arch or a reverse arch, needs to be reasonably selected, and the deformation condition of the ith time can be represented by the change of the arch height under the assumption that the original arch height is the arch height in the ith time of measurement:
wherein,for the original arch height +>Is->The camber of the secondary measurement.
For a rupture disk with deformation not reflected in the arch height, such as a slotted rupture disk, the deformation condition of the whole surface needs to be measured, and because the laser three-dimensional scanner has extremely high resolution, the scanning model usually consists of millions of grids, the average deformation of the scanning model is calculated by using a weighted average value, the efficiency is higher, and the calculation formula is as follows:
wherein,for deformation amount->Median among intervals, & gt>Is->Weight of individual interval->Is the total unit number.
The life prediction method is based on a special rupture disc fatigue performance test bed, a model rupture disc fatigue performance test is designed based on actual working conditions, deformation quantity in the test process is collected by using a deformation quantity test method, a cycle number-deformation quantity-bursting pressure fitting curve of the rupture disc is established and recorded in a computer, and after the deformation condition of the in-service rupture disc is measured, the corresponding residual fatigue life and residual bursting pressure can be searched in an input system, so that the effects of prediction and early warning are achieved.
Embodiment 3. As shown in FIG. 3, the three-dimensional scanner support based on rupture disk includes ring flange 2, holder 3, first support 5, friction locking mechanism 6, second support 7, third support 9 and laser three-dimensional scanner 10, and rupture disk 1 fixed centre gripping is in holder 3, and holder 3 fixed mounting is in ring flange 2, and fixed mounting has lock bolt 4 on the first support 5, and lock bolt 4 is fixed to ring flange 2 centre gripping, and first support 5 and second support 7 rotate to be connected, and second support 7 and third support 9 rotate to be connected, and third support 9 and laser three-dimensional scanner 10 fixed connection.
As shown in fig. 4, the first bracket 5 includes a first bracket lever 501 and a clamping piece 502, the locking bolt 4 is in threaded connection with the first bracket lever 501, the locking bolt 4 is in rotational connection with the clamping piece 502, the clamping piece 502 is in sliding connection with the first bracket lever 501, and the locking bolt 4 is rotated to enable the clamping piece 502 to slide in the first bracket lever 501, so that the first bracket 5 is controlled to clamp and unclamp the flange 2.
The friction locking mechanism 6 is installed to the junction of first support 5 and second support 7, friction locking mechanism 6 includes first friction pad 601, nut 602 and first bolt 603, first friction pad 601 is total two, two first friction pad 601 offset with the both sides face on first support pole 501 top, the another side of first friction pad 601 offsets with second support 7, first bolt 603 and nut 602 threaded connection, screw up and loosen through the rotation between first support 5 of rotation first bolt 603 control first support 5 and the second support 7 to the contained angle between control first support 5 and the second support 7.
As shown in fig. 5, a locking device 8 is installed at the joint of the second bracket 7 and the third bracket 9, the locking device 8 comprises a butterfly nut 801, a second bolt 802 and second friction gaskets 803, the two second friction gaskets 803 are in total, the two second friction gaskets 803 are propped against two side surfaces of the top end of the third bracket 9, the other surface of the second friction gasket 803 is propped against the second bracket 7, the butterfly nut 801 is in threaded connection with the second bolt 802, and the rotation between the second bracket 7 and the third bracket 9 is controlled to be screwed and loosened by rotating the second bolt 802, so that the included angle between the second bracket 7 and the third bracket 9 is controlled.
The third bracket 9 is provided with a scanner fixing bolt 901, and the scanner fixing bolt 901 is fixedly connected with the laser three-dimensional scanner 10.
When the laser three-dimensional scanner is used, the first bracket 5 is firstly placed on the flange 2, and the first bracket 5, the second bracket 7 and the third bracket 9 and the laser three-dimensional scanner 10 are fixed on the flange 2 by screwing the locking bolt 4; then the third bracket 9 is manually adjusted, and as the first bracket 5, the second bracket 7 and the third bracket 9 form a four-bar mechanism which is symmetrical up and down, only the third bracket 9 is required to be moved up and down, and the eyepiece of the laser three-dimensional scanner 10 is aligned with the center point of the rupture disk 1, so that the laser three-dimensional scanner 10 and the rupture disk 1 can be ensured to be in a horizontal relation; the friction locking mechanism 6 can ensure that the laser three-dimensional scanner 10 is stabilized at any position, and the second bracket 7 and the third bracket 9 can be locked through the locking device 8, so that the ocular of the laser three-dimensional scanner 10 can be kept concentric with the rupture disk 1 all the time in the scanning process without being influenced by the outside.
Example 4.s1, deformation-lifetime relationship establishment: and (3) carrying out experiments and records on deformation conditions and burst pressure variation of the burst plates of different types after a certain number of cycles on a fatigue testing machine, and establishing a burst plate deformation-fatigue life model and a deformation-burst pressure variation model so as to predict the burst plate life through the deformation quantity in actual working conditions.
Taking a front arch slotted rupture disk as an example, the deformation of the front arch slotted rupture disk is mainly represented by the stretching of the bridge length, and the relation model between the bridge length strain and the fatigue life can be established by taking the bridge length strain as the deformation quantity; taking the normal shape of the arch as an example, the normal shape of the arch is mainly the whole stretching deformation of the arch surface, and the weighted average value of the normal displacement of all the acquisition points on the arch surface can be used as the deformation quantity of the rupture disk.
S2, archiving original data: when the pressure vessel is provided with the rupture disc safety device, after the rupture disc, the clamp holder, the sealing gasket and the flange are arranged in the correct sequence, the surface of the rupture disc and the scanning surface required by the clamp holder are sprayed and marked, a vertical three-dimensional scanner is used for scanning and recording the surface of the rupture disc and the surface of the flange, the scanned data are spliced and processed in a computer, and meanwhile, the scanned data are stored and kept;
s3, continuously completing equipment installation: continuing to install other equipment according to the design scheme of the pressure vessel, if the equipment is exposed, a dustproof part is required to be installed, and if the equipment is not exposed, a bleeder pipe and other parts are required to be installed;
s4, data acquisition: when pressure container equipment is regularly checked, the connecting part of the rupture disc flange is required to be detached, the rupture disc and the flange are exposed, and a three-dimensional scanner is used for rescanning, recording and storing the surface of the rupture disc and the surface of the flange according to the step S2;
s5, data processing: and (3) carrying out three-dimensional transformation on the original data of the rupture disk and the measurement condition after use in a computer, comparing the transformed three-dimensional model, and comparing the surface of the rupture disk before and after use with the outer surface of the flange which does not generate displacement and deformation as a reference during comparison to obtain the deformation condition of the rupture disk, and comparing the deformation condition with the experimental data obtained in the step S1 to infer the residual life and the explosion pressure change condition.
The foregoing examples merely represent preferred embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that modifications, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the present application, which are all within the scope of the present application.
Claims (10)
1. The method for testing the deformation quantity and predicting the service life of the rupture disk based on the three-dimensional scanning is characterized by comprising the following steps of:
step 1, carrying out a certain cycle number experiment on rupture discs of different types, recording deformation and bursting pressure variation, and establishing a deformation-fatigue life database;
step 2, preprocessing the target rupture disk before scanning;
step 3, designing a fatigue performance test of the target rupture disk based on the actual working condition of the target rupture disk, and scanning the target rupture disk in the test process by using a laser three-dimensional scanner to obtain an accurate three-dimensional model of the target rupture disk;
step 4, calculating and evaluating the deformation quantity of the outer surface of the rupture disc according to the accurate three-dimensional model of the rupture disc;
and step 5, comparing the calculated and evaluated result with corresponding data in the deformation quantity-fatigue life database to obtain the residual fatigue life and residual bursting pressure of the target bursting disc.
2. The method for testing deformation and predicting service life of a rupture disk based on three-dimensional scanning according to claim 1, wherein the preprocessing comprises clamping and fixing a target rupture disk by using a flange plate, fixing a scanner bracket provided with a laser three-dimensional scanner on the flange plate, and enabling an ocular lens of the laser three-dimensional scanner to be parallel to the target rupture disk.
3. The method for testing the deformation amount and predicting the service life of the rupture disk based on the three-dimensional scanning of claim 2, wherein before the target rupture disk is clamped and fixed by using the flange plate, spraying is further required to be carried out on the target rupture disk, a clamp for clamping the rupture disk and the flange plate, so that the reflectivity of the metal surface is increased.
4. The method for testing deformation and predicting service life of a rupture disk based on three-dimensional scanning of claim 3, wherein irregular attachment points are required to be carried out on the surface of the flange after the spraying is finished, and if the irregular attachment points are scanned for a plurality of times, the attachment points are taken as references to carry out model splicing or comparison.
5. The method for testing the deformation quantity and predicting the service life of the rupture disk based on the three-dimensional scanning of the invention according to claim 1, wherein the scanning of the target rupture disk in the test process by using the laser three-dimensional scanner is to scan the two states of the target rupture disk before and after a certain time, collect the deformation quantity in the test process of the target rupture disk, obtain two groups of three-dimensional models of the rupture disk in the same rupture disk in different time, and compare the two groups of three-dimensional models of the rupture disk.
6. The three-dimensional scanning-based rupture disk deformation testing and life predicting method according to claim 5, wherein when the two groups of rupture disk three-dimensional models are compared, a reference plane is required to be selected to align the two groups of rupture disk models, the reference plane does not displace and deform in the use process of the rupture disk, the reference plane and the rupture disk are scanned simultaneously during scanning, and the two groups of rupture disk models are aligned according to the reference plane.
7. The method for testing deformation and predicting service life of a rupture disk based on three-dimensional scanning of claim 6, wherein said reference surface is the outer surface of a flange holding a rupture disk holder.
8. The method for testing deformation and predicting service life of a rupture disk based on three-dimensional scanning according to claim 1, wherein the calculation and evaluation include calculation of change of height of the dome portion, calculation of stretching condition of a section line, calculation of normal deformation condition of all scanning points of the surface of the rupture disk or deformation condition along a single direction.
9. The method for testing deformation and predicting life of a rupture disk based on three-dimensional scanning of claim 8, wherein said calculating the variation of the height of the dome is provided with a first step ofThe change in the height of the dome during the secondary deformation measurement is the dome height + ->Arch height->The calculation formula of (2) is as follows:
，
wherein,for the original arch height +>Is->The camber of the secondary measurement.
10. The method for testing deformation and predicting service life of a rupture disk based on three-dimensional scanning of claim 8, wherein the calculating normal deformation condition of all scanning points on the surface of the rupture disk is to perform scanning measurement, the scanning model comprises millions of grids, the average deformation is calculated by using a weighted average, and the calculation formula is:
，
wherein,for deformation amount->Median among intervals, & gt>Is->Weight of individual interval->Is the total unit number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410008285.7A CN117517102B (en) | 2024-01-04 | 2024-01-04 | Rupture disk deformation testing and life predicting method based on three-dimensional scanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410008285.7A CN117517102B (en) | 2024-01-04 | 2024-01-04 | Rupture disk deformation testing and life predicting method based on three-dimensional scanning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117517102A true CN117517102A (en) | 2024-02-06 |
| CN117517102B CN117517102B (en) | 2024-04-19 |
Family
ID=89766831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410008285.7A Active CN117517102B (en) | 2024-01-04 | 2024-01-04 | Rupture disk deformation testing and life predicting method based on three-dimensional scanning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117517102B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118067710A (en) * | 2024-04-18 | 2024-05-24 | 江苏八方安全设备有限公司 | Rapid calculation method for flow resistance coefficient of rupture disk based on image feature extraction |
Citations (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101120239A (en) * | 2005-04-08 | 2008-02-06 | 株式会社神户制钢所 | Device and method for predicting remaining life of blasting treating chamber and blasting treating facility |
| CN102798412A (en) * | 2012-07-31 | 2012-11-28 | 同济大学 | Method for evaluating construction quality of tunnel drilling and blasting based on three-dimensional laser scanning |
| CN203869687U (en) * | 2014-06-13 | 2014-10-08 | 中国矿业大学 | Rupture disc pressed deformation detector |
| CN104198169A (en) * | 2014-08-20 | 2014-12-10 | 广西电网公司电力科学研究院 | Rupture disk test system |
| KR20150057553A (en) * | 2013-11-20 | 2015-05-28 | 국립대학법인 울산과학기술대학교 산학협력단 | Method for predicting fatigue life |
| CN105069266A (en) * | 2015-09-10 | 2015-11-18 | 福建省特种设备检验研究院 | Crane work device part service life evaluation method |
| CN105158089A (en) * | 2015-07-23 | 2015-12-16 | 北京理工大学 | System and method for measuring dynamic response of enclosed container under blast loading |
| CN105423993A (en) * | 2015-12-08 | 2016-03-23 | 中航勘察设计研究院有限公司 | Deformation monitoring coordinate reference establishment method and device based on three dimensional laser scanning |
| CN106838530A (en) * | 2016-12-30 | 2017-06-13 | 中国石油天然气第建设有限公司 | A kind of blowing pipeline quick-replaceable blasting piece device and method |
| CN206929396U (en) * | 2017-07-05 | 2018-01-26 | 徐州八方安全设备有限公司 | A kind of high-precision sanitation-grade rupture disk |
| CN108253173A (en) * | 2018-02-26 | 2018-07-06 | 大连理工安全技术与控制工程研究中心有限公司 | A kind of automatic Prediction service life and the rupture disk safety device for replacing early warning in real time |
| CN207935503U (en) * | 2018-02-26 | 2018-10-02 | 大连理工安全技术与控制工程研究中心有限公司 | A kind of rupture disk safety device in automatic Prediction service life and replacement early warning in real time |
| CN109307530A (en) * | 2017-07-28 | 2019-02-05 | 上海华理安全装备有限公司 | Rupture disk security system Internet-based and rupture disk work normally determination method |
| CN109540707A (en) * | 2019-01-14 | 2019-03-29 | 中国地质大学（武汉） | The pilot system and method for simulating contact explosion time combustion gas test pipe anti-knock properties |
| CN111006601A (en) * | 2019-11-12 | 2020-04-14 | 黑龙江工程学院 | Key technology of three-dimensional laser scanning in deformation monitoring |
| CN211525626U (en) * | 2019-12-25 | 2020-09-18 | 徐州凯泰安全装备有限公司 | Rupture disk holder easy to position and install |
| CN111948258A (en) * | 2020-07-14 | 2020-11-17 | 国网江苏省电力有限公司 | A test device and test method for simulating fire and combustion of transformer bushings |
| CN113238023A (en) * | 2021-05-25 | 2021-08-10 | 大连度达理工安全工程有限公司 | Device for safety monitoring and early warning of positive arch rupture disk |
| CN215066635U (en) * | 2021-05-25 | 2021-12-07 | 大连度达理工安全工程有限公司 | Device for safety monitoring and early warning of positive arch rupture disk |
| CN114813405A (en) * | 2022-05-06 | 2022-07-29 | 南京工业大学 | Petrochemical device rupture disk failure form and bursting performance detection test device and method under dynamic load |
| CN115165582A (en) * | 2022-05-24 | 2022-10-11 | 大亚湾核电运营管理有限责任公司 | Method for evaluating residual life of rupture disk of large-diameter vacuum system of nuclear power station |
| CN115560690A (en) * | 2022-10-09 | 2023-01-03 | 中交第三航务工程局有限公司 | Structural object overall deformation analysis method based on three-dimensional laser scanning technology |
| CN220060681U (en) * | 2023-06-21 | 2023-11-21 | 上海市特种设备监督检验技术研究院 | Rupture disk clamping device |
| CN117313343A (en) * | 2023-09-20 | 2023-12-29 | 贵州大学 | Digital model acquisition method based on three-dimensional laser scanner blasting area |
-
2024
- 2024-01-04 CN CN202410008285.7A patent/CN117517102B/en active Active
Patent Citations (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101120239A (en) * | 2005-04-08 | 2008-02-06 | 株式会社神户制钢所 | Device and method for predicting remaining life of blasting treating chamber and blasting treating facility |
| US20090013762A1 (en) * | 2005-04-08 | 2009-01-15 | Kabushiki Kaisha Kobe Seiko Sho Kobe Steel, Ltd. | Apparatus for estimating residual life of blasting vessel, method of estimating residual life, and blasting facility |
| CN102798412A (en) * | 2012-07-31 | 2012-11-28 | 同济大学 | Method for evaluating construction quality of tunnel drilling and blasting based on three-dimensional laser scanning |
| KR20150057553A (en) * | 2013-11-20 | 2015-05-28 | 국립대학법인 울산과학기술대학교 산학협력단 | Method for predicting fatigue life |
| CN203869687U (en) * | 2014-06-13 | 2014-10-08 | 中国矿业大学 | Rupture disc pressed deformation detector |
| CN104198169A (en) * | 2014-08-20 | 2014-12-10 | 广西电网公司电力科学研究院 | Rupture disk test system |
| CN105158089A (en) * | 2015-07-23 | 2015-12-16 | 北京理工大学 | System and method for measuring dynamic response of enclosed container under blast loading |
| CN105069266A (en) * | 2015-09-10 | 2015-11-18 | 福建省特种设备检验研究院 | Crane work device part service life evaluation method |
| CN105423993A (en) * | 2015-12-08 | 2016-03-23 | 中航勘察设计研究院有限公司 | Deformation monitoring coordinate reference establishment method and device based on three dimensional laser scanning |
| CN106838530A (en) * | 2016-12-30 | 2017-06-13 | 中国石油天然气第建设有限公司 | A kind of blowing pipeline quick-replaceable blasting piece device and method |
| CN206929396U (en) * | 2017-07-05 | 2018-01-26 | 徐州八方安全设备有限公司 | A kind of high-precision sanitation-grade rupture disk |
| CN109307530A (en) * | 2017-07-28 | 2019-02-05 | 上海华理安全装备有限公司 | Rupture disk security system Internet-based and rupture disk work normally determination method |
| CN207935503U (en) * | 2018-02-26 | 2018-10-02 | 大连理工安全技术与控制工程研究中心有限公司 | A kind of rupture disk safety device in automatic Prediction service life and replacement early warning in real time |
| CN108253173A (en) * | 2018-02-26 | 2018-07-06 | 大连理工安全技术与控制工程研究中心有限公司 | A kind of automatic Prediction service life and the rupture disk safety device for replacing early warning in real time |
| CN109540707A (en) * | 2019-01-14 | 2019-03-29 | 中国地质大学（武汉） | The pilot system and method for simulating contact explosion time combustion gas test pipe anti-knock properties |
| CN111006601A (en) * | 2019-11-12 | 2020-04-14 | 黑龙江工程学院 | Key technology of three-dimensional laser scanning in deformation monitoring |
| CN211525626U (en) * | 2019-12-25 | 2020-09-18 | 徐州凯泰安全装备有限公司 | Rupture disk holder easy to position and install |
| CN111948258A (en) * | 2020-07-14 | 2020-11-17 | 国网江苏省电力有限公司 | A test device and test method for simulating fire and combustion of transformer bushings |
| CN113238023A (en) * | 2021-05-25 | 2021-08-10 | 大连度达理工安全工程有限公司 | Device for safety monitoring and early warning of positive arch rupture disk |
| CN215066635U (en) * | 2021-05-25 | 2021-12-07 | 大连度达理工安全工程有限公司 | Device for safety monitoring and early warning of positive arch rupture disk |
| CN114813405A (en) * | 2022-05-06 | 2022-07-29 | 南京工业大学 | Petrochemical device rupture disk failure form and bursting performance detection test device and method under dynamic load |
| CN115165582A (en) * | 2022-05-24 | 2022-10-11 | 大亚湾核电运营管理有限责任公司 | Method for evaluating residual life of rupture disk of large-diameter vacuum system of nuclear power station |
| CN115560690A (en) * | 2022-10-09 | 2023-01-03 | 中交第三航务工程局有限公司 | Structural object overall deformation analysis method based on three-dimensional laser scanning technology |
| CN220060681U (en) * | 2023-06-21 | 2023-11-21 | 上海市特种设备监督检验技术研究院 | Rupture disk clamping device |
| CN117313343A (en) * | 2023-09-20 | 2023-12-29 | 贵州大学 | Digital model acquisition method based on three-dimensional laser scanner blasting area |
Non-Patent Citations (3)
| Title |
|---|
| 何性顺;段奇三;苏健军;张俊锋;姬建荣;孔霖;: "爆炸冲击载荷下效应靶形变测量技术研究", 测绘通报, no. 11, 25 November 2016 (2016-11-25) * |
| 傅建;林勇;杨佳斌;: "拉伸型爆破片成形与试爆的数值试验研究", 压力容器, no. 04, 30 April 2010 (2010-04-30) * |
| 王东方;: "爆破片爆破压力可靠性研究", 导弹与航天运载技术, no. 03, 10 June 2007 (2007-06-10) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118067710A (en) * | 2024-04-18 | 2024-05-24 | 江苏八方安全设备有限公司 | Rapid calculation method for flow resistance coefficient of rupture disk based on image feature extraction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117517102B (en) | 2024-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117517102B (en) | Rupture disk deformation testing and life predicting method based on three-dimensional scanning | |
| CN102889879B (en) | For determining the method for the inclination of imageing sensor | |
| CN110967255B (en) | A mechanical properties measuring device suitable for high-temperature liquid metal medium | |
| JPH0658425B2 (en) | Monitoring method for liquid distribution system of nuclear power plant | |
| CN102679931A (en) | Novel method for measuring fatigue crack propagation length in situ | |
| US20130152411A1 (en) | Method for determining defects in a wind turbine blade root attachment and measuring tool for carrying out such method | |
| CN209764048U (en) | Film thickness measuring device | |
| MX2007000659A (en) | Measurement device. | |
| CN118362165B (en) | Method, device and system for monitoring damage status of high-pressure hydrogen storage container | |
| CN113686378B (en) | Method for monitoring running state of top cover of water turbine | |
| CN201795989U (en) | A High Temperature Creep Monitoring System for Main Steam Pipeline of Power Plant Boiler | |
| CN115165582A (en) | Method for evaluating residual life of rupture disk of large-diameter vacuum system of nuclear power station | |
| CN221572057U (en) | Compression load test tool for pressure indication gasket | |
| CN220893305U (en) | Automatic measuring and recording device for pipeline displacement | |
| CN116358753B (en) | A method and system for identifying damage to metal structures of large-scale loading and unloading machinery and equipment | |
| CN111383784B (en) | Error correction monitoring method and device for intelligent pressure vessel measuring system | |
| CN115684269A (en) | A surface defect recognition system and method for pressure vessel design | |
| CN212007042U (en) | Device for measuring spherical crown profile | |
| CN114871848A (en) | Closed type main shaft eccentric movement monitoring device and method | |
| CN118968313B (en) | Engineering safety supervision system and method based on artificial intelligence | |
| CN221840357U (en) | Expansion monitoring device based on laser positioning mode | |
| Chen et al. | Research on the Application of Three-Dimensional Laser Scanner Method for Whole Life Cycle Capacity Measurement and Safety Monitoring of Storage Tanks | |
| CN215725774U (en) | Metal pipeline wall thickness on-line monitoring device | |
| CN114877807B (en) | High-voltage cable line displacement monitoring system and method for pumped storage power station | |
| Pankaskie | 10.0 OPERATIONAL STANDARDS AND SURVEILLANC~ |
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 |