CN110231129A - Pressure container sealing inspection device and detection method - Google Patents
Pressure container sealing inspection device and detection method Download PDFInfo
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- CN110231129A CN110231129A CN201811440538.9A CN201811440538A CN110231129A CN 110231129 A CN110231129 A CN 110231129A CN 201811440538 A CN201811440538 A CN 201811440538A CN 110231129 A CN110231129 A CN 110231129A
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- 238000007689 inspection Methods 0.000 title claims abstract description 53
- 238000007789 sealing Methods 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 239000000523 sample Substances 0.000 claims abstract description 48
- 238000004458 analytical method Methods 0.000 claims abstract description 30
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 15
- 230000007547 defect Effects 0.000 claims abstract description 12
- 238000002604 ultrasonography Methods 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000012360 testing method Methods 0.000 claims description 19
- 238000005259 measurement Methods 0.000 claims description 13
- 229910000679 solder Inorganic materials 0.000 claims description 13
- 230000033001 locomotion Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000007767 bonding agent Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 230000005693 optoelectronics Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000003750 conditioning effect Effects 0.000 abstract 3
- 238000005493 welding type Methods 0.000 abstract 2
- 210000003128 head Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 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
- 210000001331 nose Anatomy 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
-
- 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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
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Abstract
The invention provides a low-carbon welding type pressure vessel sealing inspection device, which comprises: the strain data acquisition system comprises a strain gauge, an electric bridge, a signal conditioning device, a data acquisition device, a signal processing device and a display device, wherein the signal conditioning device is used for conditioning a low-level strain signal, converting the low-level strain signal into a digital signal through a multi-channel switching and A/D converter, sending the digital signal into the signal processing device through an interface circuit for processing, communicating the data acquisition device with the signal processing device, and connecting the data acquisition device with the electric bridge; the surface defect detection system comprises a mechanical device, a pneumatic device, an electrical control device, an ultrasonic acquisition and analysis device, a vortex acquisition and analysis device and a television camera device, wherein the mechanical device is connected with the pneumatic device, the pneumatic device is connected with an ultrasonic probe, and the electrical control device is connected with the ultrasonic acquisition and analysis device, the vortex acquisition and analysis device and the television camera device. A sealing detection method of the low-carbon welding type pressure container is also provided.
Description
Technical field
The present invention relates to a kind of inspection of hermetic seal device and detection method, especially a kind of low-carbon solder type pressure vessel sealing
Verifying attachment and detection method.
Background technique
The basic structure of low-carbon solder type pressure vessel include cylinder, end socket, sealing device, aperture and adapter tube, support and
Safety attachment etc., low-carbon solder type pressure vessel must satisfy the basic demand of material, design, manufacture, inspection etc., ability
Ensure pressure vessel operation safe and reliable within projected life, for high-pressure bottle, one important set of top seal device formula
At part, the quality of sealing performance is then to measure the mark of a high-pressure bottle design success or not.Low-carbon solder type pressure
Container accounts for press device ratio maximum, is one and is related to conglomerate, multi-disciplinary comprehensive product, building technology is designed into smelting
Numerous industries such as gold, machining, corrosion and corrosion protection, non-destructive testing, security protection.The reliability of equipment sealing is safety in production
One of important guarantee because be much in material handled by chemical plant it is inflammable, explosive or toxic, the material in equipment is such as
Fruit leaks out, and not only will cause the loss in production, it is often more important that and can operator be poisoned, or even set off an explosion,
, whereas if air is mixed into negative pressure equipment, it will affect the progress of technical process or cause an explosion accident, chemical industry equipment must have
Reliable leakproofness guarantees safety and creates good work situation, maintains normal operating condition.Leakproofness is mostly important,
Because pressure vessel works under artesian condition, handled medium is mostly high temperature or flammable and combustible liquids or gas, and various countries are equal
Give mandatory management for pressure vessel as special equipment.
The sealing propertytest of low-carbon solder type pressure vessel is one important detection of pressure vessel, D-shaped bolt n shape ring
Sealing structure is the good sealing structure of leakproofness formed based on D-shaped shearing bolt, implements locking technology to it
Application requirement carry out multiple repetition detection, brought a great deal of trouble to engineer application.
The main connecting link for crossing locking is bolt and nut connection, and threaded connection can obtain very big coupling force, and just
There is interchangeability by standardization in handling, therefore threaded fastener is the essential machine components of pressure vessel, bolt
Although extremely common machine components, in the important equipment as petrochemical plant and process pipe, bolt goes out
Now damage will cause serious consequence.Therefore in low-carbon solder type pressure sealing structure bolt pretightning force and surface defects detection
It can reflect the sealing performance of pressure vessel and to the full payload of screw thread, the critical load of connection, the energy for resisting transverse load
Power and the sealability on joint surface all have an impact.
Summary of the invention
To overcome the shortcomings of existing technologies, the purpose of the present invention is to provide a kind of sealings of low-carbon solder type pressure vessel to examine
Experiment device, so as to detect the close of low-carbon solder type pressure vessel indirectly by the pretightning force and surface defect of detection bolt
Sealing property, comprising:
Strain data acquisition system, including strain gauge and electric bridge, signal regulating device, data acquisition device, at signal
Device and display device are managed, the signal regulating device switches for improving low level strain signal, and by multichannel
It is converted into digital signal with A/D converter, signal processing apparatus is sent into through interface circuit and is handled, the data acquisition device
It is communicated between signal processing apparatus, the data acquisition device is connect with electric bridge；
Surface defects detection system, including mechanical device, pneumatic device, electrical control equipment, ultrasound acquisition analytical equipment,
Vortex collection analysis equipment, television pickup equipment, the mechanical device connects with the pneumatic device, the pneumatic device with surpass
Sonic probe connection, the electrical apparatus control equipment are taken the photograph with ultrasound acquisition analytical equipment, vortex collection analysis equipment and TV respectively
As equipment connects.
Preferably, the mechanical equipment includes positioning device, and the positioning device is by base, rotation large arm, radial motion
Trolley and elevation mount are constituted, will by the circumferential movement of the rotation large arm and the radial motion of the radial motion trolley
It is mounted on the ultrasound acquisition analytical equipment on the elevation mount, vortex collection analysis equipment and television pickup equipment
Scanning equipment is located in the underface of pressure container seal structure.
Preferably, the electrical control equipment include controller terminal, axis driving motor, encoder, optoelectronic switch and
Cable, the corresponding polar coordinate system of establishment of coordinate system being arranged in the controller terminal are controlled, and calculates each pressure vessel
Sealing structure is checking the coordinate in polar coordinate system, inputs unique mark number of the pressure container seal structure part, starting fortune
Moving axis control function, for the positioning device under the control of axis control system, the pressure container seal structure is arrived in automatic positioning
Underface, realize automatic positioning.
Preferably, the ultrasound acquisition analytical equipment includes ultrasonic probe, test block and ultrasound acquisition analyzer, the spy
Head is that combined ultrasonic is popped one's head in, and for carrying out a variety of scannings simultaneously, the test block verifies ultrasound inspection for determining ultrasonic examination parameter
The timber and wlding of checking method, the bolt base material and wlding of the pressure container seal structure and the test block, structure, size with
And surface appearance is identical, the test block includes reflector, and the reflector includes horizontal through-hole and rectangular channel.
Preferably, the vortex collection analysis equipment includes eddy current probe, calibration sample pipe and vortex acquisition and analysis instrument, institute
Stating eddy current probe is that rotary eddy current testing probe is made of using modularized design coil, motor and centralising device, described
The artificial of three kinds of forms of rectangular flat-bottom hole of axial strip slot, circumferential strip slot and simulation wall thickness reduction is carved on calibration sample pipe
Wound, minimum-depth 0.5mm.
Preferably, the television pickup equipment includes television camera and video camera analyzer, the telephotography
Head is that light reflective television checks camera, and miniature webcam and reflective mirror are angled and apart from assembly, finely tunes camera
The fine tuning of angle and distance between reflective mirror quickly changes imaging region and increases imaging system object distance, to be detected
Look into region fine definition and high-resolution television image.
Preferably, further include water sealing device, the water sealing device includes water supply device, the water supply device respectively with
Mechanical device and the connection of controller terminal, the water sealing device is using two-stage static state flexible waterproof envelope and two-stage dynamic flexible
Water-stop mode realizes the water-stop function of automaticly inspecting.
It preferably, further include flexible coaxial self-checking device, including two orthogonal flexible shafts, so that verifying attachment is in water
Make two-dimension flexible auto-translating on flat, while in short transverse, flexible deflection can occur automatically in the circular cone of 10 degree of cone angles.
The present invention also provides a kind of pressure vessel hermetization testing method, the sealing for low-carbon solder type pressure vessel is examined
It surveys, includes the following steps:
Step 1 carries out the bolt pretightening that strain data acquisition obtains pressure container seal structure, comprising:
(1-1) is required according to the size of pressure container seal structure, material, measurement accuracy and stress gradient selects strain gauge
Type, grid length and pattern select measuring point and patch location, strain gauge are disposed thereon；
(1-2) is required according to measurement accuracy, data acquisition number and speed determine that measuring instrument is static resistance deformeter
Or self registering digital deformeter；
(1-3) requires to use corresponding bonding agent according to strain gauge model, by regulation technological operation, is electromagnetically shielded, is answered
Number, insulation resistance and resistance value are checked after becoming meter installation and wiring, and carry out damp-proof treatment；
The strain gauge of (1-4) each point measurement is connect with the strain data acquisition system to be finished, and is debugged, is added in advance
After unloading 1-3 times, presetting balance or initial reading storage are carried out, formal load measurement test repeats 2-3 times, to guarantee to record
The reliability of data；
(1-5) analysis processing acquisition data, are converted to stress or principal stress, and then be converted to pressure container seal structure
Bolt pretightening；
Step 2, the surface defects detection system under the control of the computer, by the mechanical device by the ultrasound
The inspection probe and camera of collection analysis equipment, vortex collection analysis equipment and television pickup equipment are located in pressure appearance
The underface of device sealing structure；
Step 3, by the Pneumatic Transmission of the pneumatic device and the machine driving of the mechanical device, by the inspection
It noses into head and camera is located in the initial position of pressure container seal structure；
Step 4, after every setting and preparation that completion detects automatically, ultrasonic according to the progress of preset inspection track,
Vortex and TV automaticly inspect；
The automatic detection of (4-1) described ultrasound is detected using water logging contact ultrasonic pulse reflection echo, the ultrasonic pulse
The inspection frequency that reflection echo detection uses is 5MHz, and scanning mode uses 0 degree of longitudinal wave scanning, 45 degree of scannings of shear wave axial direction, 60
It is circumferential to spend the scanning of shear wave axial direction, the circumferential scanning counterclockwise of 45 degree of shear waves, the circumferential scanning clockwise of 45 degree of shear waves and 80 degree of shear waves
Scanning counterclockwise, using six ultrasonic probes, three layers of the ultrasonic probe point is mounted in the device of the same cylinder, and every layer
The axis of two probes diametrically the probe axis of adjacent two layers is mutually perpendicular to same, using rigid Mechanical & Electrical Transmission mode
Probe is set to contact face contact with pressure container seal structure, it is soft using by spring and the coefficient soft drive structure of cylinder
Property the driving ultrasonic probe, flexible contact is kept with check surface from entire checking process, realizes well stable ultrasound
Wave coupling；
(4-2) eddy current inspection uses multifrequency differential type eddy current inspection method, by probe placement in pressure container seal structure
Surface and near surface；
(4-3) implements TV inspection to pressure container seal structure, the TV for being increased and being adjusted using the reflective object distance of light
The fine definition of inspection method acquisition pressure container seal structure and high-resolution television image.
Preferably, ultrasound, vortex and the TV of the 4th step automaticly inspect independent progress, that is, are fully completed a kind of inspection
After method, start another inspection method.
Since there are errors for check device positioning, so that scanning axis and tested sealing structure adapter tube be not coaxial, in this item
Under part, if scanning axis rigidly enters horn mouth and adapter tube, them can be damaged, therefore, flexible coaxial automatic regulation function is set, it should
Check device can not only make two-dimension flexible auto-translating in level, and in short transverse, can be in the circular cone of 10 degree of cone angles
It is automatic that flexible deflection occurs, by being acted on while two kinds of automatic adjustments, when scanning axis can be made to enter horn mouth, automatic flexible
It is adjusted to, the flexible coaxial automatic regulation function of realization scanning axis coaxial with horn mouth and sealing structure.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.Target and feature of the invention will be apparent from view of following description taken together with the accompanying drawings,
In attached drawing:
Attached drawing 1 is the structural schematic diagram according to the strain data acquisition system of the embodiment of the present invention；
Attached drawing 2 is the surface defects detection system structure diagram according to the embodiment of the present invention；
Attached drawing 3 is the method flow diagram according to the embodiment of the present invention.
Specific embodiment
Referring to Fig. 1-2, a kind of low-carbon solder type pressure vessel inspection of hermetic seal device, so as to pass through the pre- of detection bolt
Clamp force and surface defect detect the sealing performance of pressure vessel indirectly, comprising: strain data acquisition system, including strain gauge
(as sensor, being not shown in the figure) and electric bridge, signal regulating device, data acquisition device, signal processing apparatus and aobvious
Showing device (integrated with host computer, not list individually in figure), signal regulating device is for improving low level strain signal, attached drawing
Signal amplifying part is drawn in 1 accordingly to be allocated as typical signal regulations means, and is turned by multichannel switching and A/D converter
It changes digital signal into, is sent into signal processing apparatus through interface circuit and is handled, signal processing apparatus is made using host computer here
For embodiment, can be communicated between data acquisition device and host computer, data acquisition device is connect with electric bridge；Surface defects detection
System, including mechanical device, pneumatic device, electrical control equipment, ultrasound acquisition analytical equipment, vortex collection analysis equipment, electricity
Connected depending on picture pick-up device, mechanical device and pneumatic device, pneumatic device connect with ultrasonic probe, electrical apparatus control equipment respectively with surpass
Sound collection analysis equipment, vortex collection analysis equipment and television pickup equipment connection, systems main parts block diagram such as Fig. 2 institute
Show.
Wherein, mechanical equipment includes positioning device, and positioning device is by base, rotation large arm, radial motion trolley and pitching
Device is constituted, and by rotating the circumferential movement of large arm and the radial motion of the radial motion trolley, will be mounted on elevation mount
On ultrasound acquisition analytical equipment, vortex collection analysis equipment and television pickup equipment scanning equipment, be located in pressure appearance
The underface of device sealing structure.
Wherein, electrical control equipment includes controller terminal, axis driving motor, encoder, optoelectronic switch and control electricity
Cable, the interior corresponding polar coordinate system of establishment of coordinate system being arranged of controller terminal, and calculate each pressure container seal structure and exist
Check the coordinate in polar coordinate system, unique mark number of input pressure container seal structural part starts kinematic axis control function, fixed
For position device under the control of axis control system, the underface of the pressure container seal structure is arrived in automatic positioning, and it is automatic fixed to realize
Position.
Wherein, ultrasound acquisition analytical equipment includes ultrasonic probe, test block and ultrasound acquisition analyzer, is popped one's head in super to combine
Sonic probe, for carrying out a variety of scannings simultaneously, test block verifies ultrasound inspection methods, pressure is held for determining ultrasonic examination parameter
The bolt base material and wlding of device sealing structure are identical as the timber of test block and wlding, and structure, size and surface appearance are also identical.
Test block includes reflector, and size is the benchmark of inspection result record and evaluation, and reflector includes horizontal through-hole and rectangular channel, thus
The bolt surface defect thickness of regulation reference block reflector size and pressure container seal structure can be standardized according to ASME.
Wherein, vortex collection analysis equipment includes eddy current probe, calibration sample pipe and vortex acquisition and analysis instrument, eddy current probe
It is made of using modularized design coil, motor and centralising device for rotary eddy current testing probe, is easily installed and replaces,
In addition, rotating detector inspection sensitivity with higher, has good Detection capability to bolt surface and near surface flaw, together
When will probe swing caused by noise be reduced to it is minimum；Axial strip slot, circumferential strip slot and simulation are carved on calibration sample pipe
The artificial wound of three kinds of forms of rectangular flat-bottom hole of wall thickness reduction, minimum-depth 0.5mm.
Wherein, television pickup equipment includes television camera and video camera analyzer, and television camera is light reflection
Formula TV inspection camera, miniature webcam and reflective mirror are angled and apart from assembly, finely tune camera and reflective mirror it
Between angle and distance fine tuning can quickly change imaging region and increase imaging system object distance, thus obtain be examined region
Fine definition and high-resolution television image.
The verifying attachment of the present embodiment includes water sealing device, and water sealing device includes water supply device, water supply device difference
It is connect with mechanical device and controller terminal, why which is set, be due to the automatic inspection of sealing structure ultrasound
Look into using water coincidence mode, in the case that sealing structure bolt downwards and check that probe scans downward vertically from bolt top matches
It sets, the static water-stop of the detection setting of matching surface pattern.In addition, the scanning axis of verifying attachment is directly contacted with water, sweep
If blow-by on the outside of deviation shaft, will cause the leakage of water with radionuclide, to carry out dynamic water-stop to deviation shaft is swept.This reality
It applies under a preferable case, in order to avoid examining equipment and detected sealing structure that rigid collision, excessive occurs in water-stop
Abrasion, and ensure going slick for scanning axis, water sealing device is using two-stage static state flexible waterproof envelope and two-stage dynamic flexible water
Sealing means realize the water-stop function of automaticly inspecting.
Referring to Fig. 3, the detection method of the low-carbon solder type pressure vessel sealing of the present embodiment includes the following steps:
Step 1 carries out the bolt pretightening that strain data acquisition obtains pressure container seal structure, comprising:
(1-1) is required according to the size of pressure container seal structure, material, measurement accuracy and stress gradient selects strain gauge
Type, grid length and pattern select measuring point and patch location, strain gauge are disposed thereon, the selection of the point position is general
It is the theoretical analysis result according to component load-bearing, if doing arrangement in stress biggish dangerous point or reflection stress distribution feature
Measuring point, strain gauge arrangement and group bridge scheme consider the loading conditions and temperature-compensating principle of the stress state of measuring point, component, individual event
The measuring point of stress state, it is only necessary to lay single work strain meter, the profit state measuring point of plane known to principal direction of stress, arrangement
Mutually perpendicular two strain gauges when principal direction of stress is unknown, arrange three strain gauges, and in same temperature environment, each work is answered
Become meter and be used in conjunction with a temperature-compensating strain gauge, to improve sensitivity, reduce error；
(1-2) is required according to measurement accuracy, data acquisition number and speed determine measuring instrument, few for measuring point number
Static stress measurement, using the dynamically balanced static resistance deformeter of hand, or stress variation faster feelings more for measuring point number
Condition uses self registering digital deformeter；
(1-3) requires to use corresponding bonding agent according to strain gauge model, by regulation technological operation, measures wire arrangements root
It is carried out according to the influence of conductor resistance, distribution capacity and temperature change, avoids the interference of electromagnetic field, be electromagnetically shielded, strain gauge peace
Number, insulation resistance and resistance value are checked after dress and wiring, and carry out damp-proof treatment；
The strain gauge of (1-4) each point measurement is connect with the strain data acquisition system to be finished, and is debugged, is added in advance
After unloading 1-3 times, presetting balance or initial reading storage are carried out, formal load measurement test repeats 2-3 times, to guarantee to record
The reliability of data；
(1-5) analysis processing acquisition data, are converted to stress or principal stress, to be changed into bolt pretightening；
Step 2, surface defects detection system under the control of the computer, by mechanical device by ultrasound acquisition analytical equipment,
The inspection probe and camera of vortex collection analysis equipment and television pickup equipment are located in pressure container seal structure
Underface；
Step 3, by the Pneumatic Transmission of pneumatic device and the machine driving of the mechanical device, will check probe and
Camera is located in the initial position of pressure container seal structure；
Step 4, after every setting and preparation that completion detects automatically, ultrasonic according to the progress of preset inspection track,
Vortex and TV automaticly inspect, including；
The automatic detection of (4-1) ultrasound is detected using water logging contact ultrasonic pulse reflection echo, ultrasonic pulse reflection echo
Detecting the inspection frequency used is 5MHz, and scanning mode uses 0 degree of longitudinal wave scanning, 45 degree of shear wave axial direction scannings, 60 degree of shear wave axis
It is circumferentially swept counterclockwise to scanning, the circumferential scanning counterclockwise of 45 degree of shear waves, the circumferential scanning clockwise of 45 degree of shear waves and 80 degree of shear waves
It looks into, using six ultrasonic probes, three layers of ultrasonic probe point is mounted in the device of the same cylinder, every layer of two probes
Diametrically the probe axis of adjacent two layers is mutually perpendicular to axis same, makes probe and pressure using rigid Mechanical & Electrical Transmission mode
Container sealing structure contacts face contact, and using by spring and the coefficient soft drive structure of cylinder, flexible drive ultrasound is visited
Head keeps flexible contact with check surface from entire checking process, realizes well stable ultrasonic wave-coupled；
(4-2) eddy current inspection uses multifrequency differential type eddy current inspection method, by probe placement in pressure container seal structure
Surface and near surface；
(4-3) implements TV inspection to pressure container seal structure, the TV for being increased and being adjusted using the reflective object distance of light
The fine definition of inspection method acquisition pressure container seal structure and high-resolution television image.
Ultrasound, vortex and the TV of 4th step automaticly inspect independent progress, that is, after being fully completed a kind of inspection method, start
Another inspection method.
Since there are errors for check device positioning, so that scanning axis and tested sealing structure adapter tube be not coaxial, in this item
Under part, if scanning axis rigidly enters horn mouth and adapter tube, them can be damaged, therefore, flexible coaxial automatic regulation function is set, it should
Check device can not only make two-dimension flexible auto-translating in level, and in short transverse, can be in the circular cone of 10 degree of cone angles
It is automatic that flexible deflection occurs, by being acted on while two kinds of automatic adjustments, when scanning axis can be made to enter horn mouth, automatic flexible
It is adjusted to, the flexible coaxial automatic regulation function of realization scanning axis coaxial with horn mouth and sealing structure.
Although the present invention is described by reference to specific illustrative embodiments, these embodiments are not will receive
Restriction and only limited by accessory claim.It should be understood by those skilled in the art that can be without departing from of the invention
Change and modification are able to carry out to the embodiment of the present invention in the case where protection scope and spirit.
Claims (10)
1. a kind of pressure vessel inspection of hermetic seal device, the inspection of hermetic seal for low-carbon solder type pressure vessel, it is characterised in that packet
It includes:
Strain data acquisition system, including strain gauge and electric bridge, signal regulating device, data acquisition device, signal processing device
It sets and display device, the signal regulating device passes through multichannel switching and A/D for improving low level strain signal
Converter is converted into digital signal, is sent into signal processing apparatus through interface circuit and is handled, the data acquisition device and letter
It is communicated between number processing unit, the data acquisition device is connect with electric bridge；
Surface defects detection system, including mechanical device, pneumatic device, electrical control equipment, ultrasound acquisition analytical equipment, vortex
Collection analysis equipment, television pickup equipment, the mechanical device are connect with the pneumatic device, and the pneumatic device and ultrasound are visited
Head connection, the electrical apparatus control equipment are set with ultrasound acquisition analytical equipment, vortex collection analysis equipment and telephotography respectively
Standby connection.
2. a kind of pressure vessel inspection of hermetic seal device according to claim 1, it is characterised in that: the mechanical equipment includes
Positioning device, the positioning device are made of base, rotation large arm, radial motion trolley and elevation mount, pass through the rotation
The ultrasound being mounted on the elevation mount is adopted in the radial motion of the circumferential movement of large arm and the radial motion trolley
The scanning equipment of set analysis equipment, vortex collection analysis equipment and television pickup equipment, is located in pressure container seal structure
Underface.
3. a kind of pressure vessel inspection of hermetic seal device according to claim 1, it is characterised in that: the electrical control equipment
Including controller terminal, axis driving motor, encoder, optoelectronic switch and control cable, it is arranged in the controller terminal
The corresponding polar coordinate system of establishment of coordinate system, and calculate each pressure container seal structure and checking the coordinate in polar coordinate system,
The unique mark number for inputting the pressure container seal structure part, starts kinematic axis control function, the positioning device is in axis control
Under the control of system processed, the underface of the pressure container seal structure is arrived in automatic positioning, realizes automatic positioning.
4. a kind of pressure vessel inspection of hermetic seal device according to claim 1, it is characterised in that: the ultrasound acquisition analysis
Equipment includes ultrasonic probe, test block and ultrasound acquisition analyzer, and the probe is that combined ultrasonic is popped one's head in, and is used for while carrying out more
Kind scanning, the test block verify ultrasound inspection methods, the spiral shell of the pressure container seal structure for determining ultrasonic examination parameter
The timber and wlding of bolt base material and wlding and the test block, structure, size and surface appearance are identical, and the test block includes reflection
Body, the reflector include horizontal through-hole and rectangular channel.
5. a kind of pressure vessel inspection of hermetic seal device according to claim 1, it is characterised in that: the vortex collection analysis
Equipment includes eddy current probe, calibration sample pipe and vortex acquisition and analysis instrument, and the eddy current probe is rotary eddy current testing probe,
It using modularized design, is made of coil, motor and centralising device, axial strip slot, circumferential item is carved on the calibration sample pipe
The artificial wound of three kinds of forms of rectangular flat-bottom hole of shape slot and simulation wall thickness reduction, minimum-depth 0.5mm.
6. a kind of pressure vessel inspection of hermetic seal device according to claim 1, it is characterised in that: the television pickup equipment
Including television camera and video camera analyzer, the television camera is that light reflective television checks camera, miniature
The fine tuning of camera and angled and between assembly, fine tuning camera and reflective mirror the angle and distance of reflective mirror is fast
Speed changes imaging region and increases imaging system object distance, to obtain the fine definition for being examined region and high-resolution TV
Image.
7. a kind of pressure vessel inspection of hermetic seal device according to claim 1, it is characterised in that: further include water tight enclosure
It sets, the water sealing device includes water supply device, and the water supply device is connect with mechanical device and controller terminal respectively, institute
Water sealing device is stated using two-stage static state flexible waterproof envelope and two-stage dynamic flexible water-stop mode, realizes the watertight automaticly inspected
Seal function.
8. a kind of pressure vessel inspection of hermetic seal device according to claim 1, it is characterised in that: further include flexible coaxial from
Dynamic regulating device, including two orthogonal flexible shafts, so that verifying attachment makees two-dimension flexible auto-translating in level, while in height
Direction is spent, flexible deflection can occur automatically in the circular cone of 10 degree of cone angles.
9. a kind of pressure vessel sealing detection side carried out using any pressure vessel inspection of hermetic seal device of claim 1-8
Method includes the following steps: for the inspection of hermetic seal of low-carbon solder type pressure vessel
Step 1 carries out the bolt pretightening that strain data acquisition obtains pressure container seal structure, comprising:
(1-1) is required according to the size of pressure container seal structure, material, measurement accuracy and stress gradient selects strain gauge kind
Class, grid length and pattern select measuring point and patch location, strain gauge are disposed thereon；
(1-2) according to measurement accuracy require, data acquisition number and speed determine measuring instrument be static resistance deformeter or from
The digital deformeter of dynamic record；
(1-3) requires to use corresponding bonding agent according to strain gauge model, by regulation technological operation, is electromagnetically shielded, strain gauge
Number, insulation resistance and resistance value are checked after installation and wiring, and carry out damp-proof treatment；
The strain gauge of (1-4) each point measurement is connect with the strain data acquisition system to be finished, and is debugged, and is adding unloading in advance
After 1-3 times, presetting balance or initial reading storage are carried out, formal load measurement test repeats 2-3 times, to guarantee to record data
Reliability；
(1-5) analysis processing acquisition data, are converted to stress or principal stress, and then be converted to the bolt of pressure container seal structure
Pretightning force；
Step 2, the surface defects detection system under the control of the computer, by the mechanical device by the ultrasound acquisition
It is close that the inspection probe and camera of analytical equipment, vortex collection analysis equipment and television pickup equipment are located in pressure vessel
The underface of seal structure；
Step 3 is visited the inspection by the Pneumatic Transmission of the pneumatic device and the machine driving of the mechanical device
Head and camera are located in the initial position of pressure container seal structure；
Step 4 after completing the every setting detected automatically and preparation, carries out ultrasound, vortex according to preset inspection track
It is automaticly inspected with TV；
The automatic detection of (4-1) described ultrasound is detected using water logging contact ultrasonic pulse reflection echo, the ultrasonic pulse reflection
The inspection frequency that echo detecting uses is 5MHz, and scanning mode is using 0 degree of longitudinal wave scanning, 45 degree of shear wave axial direction scannings, 60 degree of cross
The scanning of wave axial direction, the circumferential scanning counterclockwise of 45 degree of shear waves, the circumferential scanning clockwise of 45 degree of shear waves and 80 degree of shear waves circumferential inverse time
Needle scanning, using six ultrasonic probes, three layers of the ultrasonic probe point is mounted in the device of the same cylinder, and the two of every layer
Diametrically the probe axis of adjacent two layers is mutually perpendicular to the axis of a probe same, makes to visit using rigid Mechanical & Electrical Transmission mode
Head contacts face contact with pressure container seal structure, and using by spring and the coefficient soft drive structure of cylinder, flexibility is driven
The ultrasonic probe is moved, keeps flexible contact with check surface from entire checking process, realizes well stable ultrasonic wave coupling
It closes；
(4-2) eddy current inspection use multifrequency differential type eddy current inspection method, by probe placement pressure container seal structure table
Face and near surface；
(4-3) implements TV inspection to pressure container seal structure, the TV inspection for being increased and being adjusted using the reflective object distance of light
The fine definition of method acquisition pressure container seal structure and high-resolution television image.
10. according to the method described in claim 9, it is characterized by: ultrasound, vortex and the TV of the 4th step automaticly inspect
It is independent to carry out, that is, after being fully completed a kind of inspection method, start another inspection method.
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| CN201811440538.9A CN110231129A (en) | 2018-11-29 | 2018-11-29 | Pressure container sealing inspection device and detection method |
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| TWI834357B (en) * | 2021-10-29 | 2024-03-01 | 日商山葉汎提克股份有限公司 | Inspection method and inspection equipment |
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| CN118362252A (en) * | 2024-06-18 | 2024-07-19 | 曲阜市自然资源管理服务中心(曲阜市土地储备中心) | Tightness detection equipment is used in surveying instrument product production |
| CN118362252B (en) * | 2024-06-18 | 2024-08-13 | 曲阜市自然资源管理服务中心(曲阜市土地储备中心) | Tightness detection equipment is used in surveying instrument product production |
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Application publication date: 20190913 |