CN107782753A - A kind of small diameter conduits batch ray detecting apparatus and method - Google Patents
A kind of small diameter conduits batch ray detecting apparatus and method Download PDFInfo
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- CN107782753A CN107782753A CN201710851912.3A CN201710851912A CN107782753A CN 107782753 A CN107782753 A CN 107782753A CN 201710851912 A CN201710851912 A CN 201710851912A CN 107782753 A CN107782753 A CN 107782753A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/18—Investigating the presence of flaws defects or foreign matter
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Abstract
The present invention relates to X-ray Testing Technology field, specifically discloses a kind of small diameter conduits batch ray detecting apparatus and method, and device includes transillumination frame and conduit transillumination steady pin, and detection method comprises the following steps：Step 1：Fixed conduit to be measured；Step 2：Carry out circumferential detection.Detected using apparatus of the present invention and method, more conduits can be detected within the shorter time compared with conventional method, shorten detection cycle, significantly improve detection efficiency, and testing result is accurate, high sensitivity, the reliability of ray detection is drastically increased.
Description
Technical field
The invention belongs to X-ray Testing Technology field, and in particular to a kind of small diameter conduits batch ray detecting apparatus and side
Method.
Background technology
The small diameter conduits batch X-ray Testing Technology of rocket engine, this detection technique apply the hair in multinomial model
In the X ray batch detection of the gas conduct pipe weld seam of motivation and body, the bottleneck of conduit batch production detection is efficiently solved.
Main study subject engine minor diameter gas conduct pipe and its conduit tube component.Such conduit is by one
1Cr18Ni9Ti stainless steel tubes bend shaping and bulb and flange position and pipe shaft are welded through argon arc welding again, and whole conduit is in
The different shape of bending change.Its small diameter tubes diameter minimum 6mm, maximum gauge 18mm.Length is most short to be only
28mm, it is most long for 2500mm.Weld seam is normally at conduit both ends, belongs to annular butt weld, and throat depth is 1.4mm or so,
Weld width and interval are 1-2mm or so.
With the continuous development of scientific research technology, various new model rockets develop, the application amount of gas conduct pipe also with
Increased sharply in geometry quantity, we can only use orientation roentgenography detection at present, and the difficulty of its transillumination can be summarized as following
Some：
(1) quantity of conduit is very big, and the weld seam of each conduit is required for carrying out X-ray detection, and is penetrated using orientation
The each transillumination of line machine testing can only detect 20 conduits, so causing the cycle of batch detection to greatly prolong, therefore cause to detect
Cycle bottleneck.
(2) because the shape and length and flexibility of gas conduct pipe and its component are different, tested lead is caused in detection
Pipe weld seam is relatively orthogonal to radiographic source direction, it is necessary to carry out angle adjustment to conduit.And because many guiding-tube bend radians are larger
And weld seam causes detection angles bad, it is necessary to which repeatedly transillumination can just make up too close to root.
(3) gas conduct pipe and component would operate in high-strength vibration, the operating mode of certain pressure, and quality requirement is high, detection spirit
Sensitivity requires high.If using the vertical transillumination of single orientation, although being able to ensure that the reliability detection coverage rate of detection
Can be very low, substantially reduce detection efficiency.
Therefore corresponding research work must be carried out, using reasonable transillumination method, on the premise of ensuring to detect reliability
And can enough improves the efficiency of batch detection, reaches preferable Detection results.
The content of the invention
It is an object of the invention to provide a kind of small diameter conduits batch ray detecting apparatus and method, can effectively improve
The efficiency of batch detection.
Technical scheme is as follows：
A kind of small diameter conduits batch ray detecting apparatus, for rocket engine small diameter conduits or other purposes
Small diameter conduits carry out batch ray detection, including transillumination frame and conduit transillumination steady pin；
Described transillumination frame includes pedestal, support bar, laying rack and connector；
Described pedestal has two pieces, and shape is cuboid, and counterweight is more than 15kg, for ensureing the stability of transillumination frame；
A support bar, the height of support bar and the transillumination height one of X-ray machine X are equipped with the center of each pedestal
Cause, ensure transillumination angle vertical；
Multiple through holes are equidistantly opened up along longitudinal direction on the top of support bar, the axis of through hole and the axis of support bar are mutual
It is perpendicular；
Described laying rack is arc, is respectively equipped with a fixed via at the both ends of laying rack, fixed via it is interior
Footpath is identical with the internal diameter of through hole, and the axis of fixed via is vertical with laying rack；
In laying rack respectively away from both ends fixed via on equidistant one section, hole is equidistantly got through, it is the number of through hole, interior
Footpath, spacing are according to the determination of the size of conduit to be measured, the axis of through hole and the diameter parallel of fixed via；
Described connector has two, for connecting laying rack and two support bars；
Described conduit transillumination steady pin is cylinder, is divided into core section, stage casing and endpiece；
Described core segment length is 10-15mm, a diameter of 6-18mm；
Described stage casing and endpiece length is 10-15mm, and a diameter of 16-20mm in stage casing, the diameter of endpiece is with putting
Through hole internal diameter on frame is consistent, and endpiece is used to be inserted in the through hole of laying rack with A/C transillumination steady pin；
30 ° of chamferings are processed in the end of core section, to prevent plowing from pipe inner wall.
One end of described connector is connected by screw with the fixed via of laying rack, the other end by Fixed latches with
Through hole on support bar is connected.
Radian rad=the π D/2, D of described laying rack are effective diameter in the range of 360 ° of transilluminations, and D span is
0.5~3m.
One kind in the material that the material of described pedestal is iron, steel and color density are larger；
The material of described support bar is steel.
On one section of laying rack respectively away from each 25mm of both ends fixed via, hole is equidistantly got through.
Described laying rack arc length is 55cm, chord length 51cm, thickness 40mm, width 51cm.
A kind of detection method based on small diameter conduits batch ray detecting apparatus, comprises the following steps：
Step 1：Fixed conduit to be measured；
Step 2：Carry out circumferential detection；
2.1 selection radiographic sources；
2.2 selection parameters, arrangement image quality indicator；
2.3 carry out transillumination.
Described step 1：Fixed conduit to be measured, specifically includes following steps：
1.1 select a level altitude according on support bar through hole site, are then adjusted in place laying rack, pass through
Connector is fixed；
1.2 select the conduit transillumination steady pin of matching according to the internal diameter of conduit to be checked, will be consistent with conduit quantity to be checked
In the through hole of conduit transillumination steady pin insertion laying rack；
1.3 are respectively inserted in conduit to be checked on conduit transillumination steady pin according to dash number；
The level height of X-ray machine X window is adjusted to consistent with the level height of conduit Weld pipe mill to be checked by 1.4.
Described step 2：Circumferential detection is carried out, specifically includes following steps：
2.1 selection radiographic sources, selection being capable of 360 ° of circumferential x-ray sources for sending ray.
2.2 selection parameters, arrangement image quality indicator, choose 90kV tube voltages, and two are respectively carried out to supravasal annular butt weld
Secondary transillumination, each 90 ° of transillumination angle interval；
Transillumination twice, each 90 ° of transillumination angle interval are respectively carried out to supravasal annular butt weld；
To the conduit of same specification, an image quality indicator is put according at interval of 90 °；When simultaneously, transillumination different size is led
Guan Shi, put different image quality indicators；
Step 2.3 carries out transillumination, using the vertical transillumination of double-walled slur and double-walled slur elliptic imaging transillumination, to conduit
Carry out double-walled slur transillumination.
Each point of the arc surface of the laying rack is in point of contact with x-ray source.
The remarkable result of the present invention is：
(1) detected using apparatus of the present invention and method, can be detected within the shorter time compared with conventional method
More conduits, shorten detection cycle, significantly improve detection efficiency.
(2) detected using apparatus of the present invention and method, testing result is accurate, high sensitivity, drastically increases and penetrates
The reliability of line detection.
(3) detected using apparatus of the present invention and method, egative film image quality is high, and blackness is uniform, conduit ovality one
Cause, recall rate also accordingly improves.
(4) multiple conduits of different size can together be placed in apparatus of the present invention while be detected, easy to operate, move
It is visibly moved easy.
(5) apparatus of the present invention and method are had been used in the detection of multinomial model rocket gas conduct pipe and component, using model
Enclose wide.
Brief description of the drawings
Fig. 1 is transillumination frame top view；
Fig. 2 is transillumination frame front view；
Fig. 3 is circumferential detects schematic diagram；
Fig. 4 is conduit transillumination steady pin schematic diagram.
In figure：1. transillumination frame；2. conduit transillumination steady pin；3. pedestal；4. support bar；5. laying rack；6. connector.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail to the present invention.
A kind of small diameter conduits batch ray detecting apparatus as Figure 1-4, for being led to rocket engine minor diameter
The small diameter conduits of pipe or other purposes carry out batch ray detection, and device includes transillumination frame 1 and conduit transillumination steady pin 2.
Described transillumination frame 1 includes pedestal 3, support bar 4, laying rack 5 and connector 6.
Described pedestal 3 has two pieces, and shape is cuboid, and material is iron, steel or the larger material of color density.Pedestal
3 counterweights are heavier, more than 15kg, for ensureing the stability of transillumination frame 1.
A support bar 4 is equipped with the center of each pedestal 3, the height of support bar 4 and the transillumination of X-ray machine X are high
Degree is consistent, ensures transillumination angle vertical.The material of support bar 4 is steel.It is more along longitudinally equidistantly opening up on the top of support bar 4
Individual through hole, the axis of the axis and support bar 4 of through hole are orthogonal.
Described laying rack 5 is arc, and radian rad=π D/2, D are effective diameter in the range of 360 ° of transilluminations, D value
Scope is 0.5~3m.Be respectively equipped with a fixed via at the both ends of laying rack 5, the internal diameter of fixed via and through hole it is interior
Footpath is identical, and the axis of fixed via is vertical with laying rack 5.Done circumferentially thoroughly in order that conduit axis is parallel with X-ray machine X center line
According to, on one section of laying rack 5 respectively away from each 25mm of both ends fixed via, equidistantly get through hole, the number of through hole, internal diameter,
Away from according to the determination of the size of conduit to be measured, the axis of through hole and the diameter parallel of fixed via.The arc surface of laying rack 5 of arc
Each point is in point of contact with x-ray source, is effectively guaranteed the perpendicularity at detection angle.
In the detection process of reality, the different pendulum of multiple through hole parameters can be processed according to different pipe sizes to be measured
Put frame 5.When being detected every time, according to different pipe size situations to be measured, using different laying racks 5.
Described connector 6 has two, for connecting laying rack 5 and two support bars 4.One end of connector 6 passes through spiral shell
Nail is connected with the fixed via of laying rack 5, and the other end is connected by Fixed latches with the through hole on support bar 4.
Described conduit transillumination steady pin 2 is cylinder, is divided into core section, stage casing and endpiece.Wherein, core segment length is
10-15mm, preferably 10mm, a diameter of 6-18mm, to meet the needs of fixed a variety of different-diameter conduits；Stage casing and endpiece length
It is 10-15mm, preferably 15mm, a diameter of 16-20mm in stage casing, the diameter of endpiece is consistent with the through hole internal diameter on laying rack 5,
Endpiece is used to be inserted in the through hole of laying rack 5 with A/C transillumination steady pin 2.30 ° of chamferings are processed in the end of core section, with
Prevent plowing from pipe inner wall.
A kind of detection method based on rocket engine small diameter conduits batch ray detecting apparatus, comprises the following steps：
Step 1：Fixed conduit to be measured
1.1 select a level altitude according on support bar 4 through hole site, are then adjusted in place laying rack 5, lead to
Connector 6 is crossed to fix；
1.2 select the conduit transillumination steady pin 2 of matching according to the internal diameter of conduit to be checked, will be consistent with conduit quantity to be checked
Conduit transillumination steady pin 2 is inserted in the through hole of laying rack 5；
1.3 are respectively inserted in conduit to be checked on conduit transillumination steady pin 2 according to dash number；
The level height of X-ray machine X window is adjusted to consistent with the level height of conduit Weld pipe mill to be checked by 1.4.
Step 2：Carry out circumferential detection
2.1 selection radiographic sources
Selection can 360 ° of circumferential x-ray sources for sending ray, it is disposable using 360 ° of transillumination coverage of radiographic source
Complete the batch detection of conduit.
2.2 selection parameters, arrangement image quality indicator
According to《QJ2866-1997 conduit radiographic examination (complete) standards》, with reference to real work situation selection parameter, and set
Image quality indicator.For example, choosing 90kV tube voltages, transillumination twice, each transillumination angle are respectively carried out to supravasal annular butt weld
90 ° of interval.To the conduit of same specification, an image quality indicator is put according at interval of 90 °；When simultaneously, transillumination different size is led
Guan Shi, put different image quality indicators.
2.3 carry out transillumination
Using the vertical transillumination of double-walled slur and double-walled slur elliptic imaging transillumination, it is saturating that double-walled slur is carried out to conduit
According to.
Embodiment
With transillumination model engine small diameter conduits 60, exemplified by catheter diameter is φ 6mm.
Step 1：Fixed conduit to be measured
Select the pedestal 3 that two block sizes are 14 × 14 × 2.5cm；Selection arc length is 55cm, chord length 51cm, and thickness is
40mm, width are 51cm laying rack 5；Selection core segment length is 10mm, a diameter of 6mm, and stage casing and endpiece length are
15mm, a diameter of 16mm in stage casing conduit transillumination steady pin 2.
Conduit transillumination steady pin 2 and conduit are put on device according to dash number, and post film, according to dash number
Font numbering one is glued on film every 30, to play snap action.
Step 2：Carry out circumferential detection
From circumferential X-ray production apparatus, x-ray angle is 360 × 22 °.Move to radiographic source is parallel away from this batch of conduit Weld pipe mill
At 1 meter, ray center beam is carried out saturating perpendicular to the bus center in the region of this transillumination using the vertical transillumination of double-walled slur
According to.
Reasonable exposure parameter is searched according to technical chart according to scanning thickness, carries out four transilluminations altogether, every one of circumferential weld is equal
Transillumination twice, every time at intervals of 90 °.To reduce scattered rays, detection sensitivity is improved, using small voltage transillumination, the transillumination of four times
Parameter is：120KV、6mA、3min.
The batch detection for carrying out conduit using apparatus of the present invention and method has significant effect.Led with certain model engine
Exemplified by pipe：Using orientation 20 conduits of X ray transillumination, conduit is twice circular weld, and detection time is 2.5 hours；Using
Conduit batch detecting device of the present invention and method detect 100 conduits, and conduit is twice circular weld, and detection time is only
1.5 hours, detection efficiency was compared to have and significantly improved, and by the test of four direction sensitivity technique, can ensure that inspection
The reliability of survey.
Claims (10)
1. a kind of small diameter conduits batch ray detecting apparatus, for rocket engine small diameter conduits or other purposes
Small diameter conduits carry out batch ray detection, it is characterised in that：Including transillumination frame (1) and conduit transillumination steady pin (2)；
Described transillumination frame (1) includes pedestal (3), support bar (4), laying rack (5) and connector (6)；
Described pedestal (3) has two pieces, and shape is cuboid, and counterweight is more than 15kg, for ensureing the stabilization of transillumination frame (1)
Property；
A support bar (4), the height of support bar (4) and the transillumination of X-ray machine X are equipped with the center of each pedestal (3)
It is highly consistent, ensure transillumination angle vertical；
On the top of support bar (4) multiple through holes, the axis of through hole and the axis of support bar (4) are equidistantly opened up along longitudinal direction
It is orthogonal；
Described laying rack (5) is arc, and a fixed via is respectively equipped with the both ends of laying rack (5), fixed via
Internal diameter is identical with the internal diameter of through hole, and the axis of fixed via is vertical with laying rack (5)；
In laying rack (5) respectively away from both ends fixed via on equidistant one section, equidistantly get through hole, the number of through hole, internal diameter,
Spacing is according to the determination of the size of conduit to be measured, the axis of through hole and the diameter parallel of fixed via；
Described connector (6) has two, for connecting laying rack (5) and two support bars (4)；
Described conduit transillumination steady pin (2) is cylinder, is divided into core section, stage casing and endpiece；
Described core segment length is 10-15mm, a diameter of 6-18mm；
Described stage casing and endpiece length is 10-15mm, a diameter of 16-20mm in stage casing, diameter and the laying rack (5) of endpiece
On through hole internal diameter it is consistent, endpiece is used to be inserted in the through hole of laying rack (5) with A/C transillumination steady pin (2)；
30 ° of chamferings are processed in the end of core section, to prevent plowing from pipe inner wall.
A kind of 2. small diameter conduits batch ray detecting apparatus as claimed in claim 1, it is characterised in that：Described connector
(6) one end is connected by screw with the fixed via of laying rack (5), and the other end passes through on Fixed latches and support bar (4)
Through hole is connected.
A kind of 3. small diameter conduits batch ray detecting apparatus as claimed in claim 2, it is characterised in that：Described laying rack
(5) radian rad=π D/2, D is effective diameter in the range of 360 ° of transilluminations, and D span is 0.5~3m.
A kind of 4. small diameter conduits batch ray detecting apparatus as claimed in claim 3, it is characterised in that：Described pedestal
(3) one kind in the material that material is iron, steel and color density are larger；
The material of described support bar (4) is steel.
A kind of 5. small diameter conduits batch ray detecting apparatus as claimed in claim 4, it is characterised in that：In laying rack (5)
On one section respectively away from each 25mm of both ends fixed via, hole is equidistantly got through.
A kind of 6. small diameter conduits batch ray detecting apparatus as claimed in claim 5, it is characterised in that：Described laying rack
(5) arc length is 55cm, chord length 51cm, thickness 40mm, width 51cm.
A kind of 7. detection method based on small diameter conduits batch ray detecting apparatus, it is characterised in that：Comprise the following steps：
Step 1：Fixed conduit to be measured；
Step 2：Carry out circumferential detection；
2.1 selection radiographic sources；
2.2 selection parameters, arrangement image quality indicator；
2.3 carry out transillumination.
8. a kind of detection method based on small diameter conduits batch ray detecting apparatus as claimed in claim 7, its feature exist
In：Described step 1：Fixed conduit to be measured, specifically includes following steps：
1.1 select a level altitude according on support bar (4) through hole site, are then adjusted in place laying rack (5), lead to
It is fixed to cross connector (6)；
1.2 select the conduit transillumination steady pins (2) of matching according to the internal diameter of conduit to be checked, by with conduit quantity to be checked is consistent leads
In the through hole of pipe transillumination steady pin (2) insertion laying rack (5)；
1.3 are respectively inserted in conduit to be checked on conduit transillumination steady pin (2) according to dash number；
The level height of X-ray machine X window is adjusted to consistent with the level height of conduit Weld pipe mill to be checked by 1.4.
9. a kind of detection method based on small diameter conduits batch ray detecting apparatus as claimed in claim 8, its feature exist
In：Described step 2：Circumferential detection is carried out, specifically includes following steps：
2.1 selection radiographic sources, selection being capable of 360 ° of circumferential x-ray sources for sending ray；
2.2 selection parameters, arrangement image quality indicator, choose 90kV tube voltages, supravasal annular butt weld are respectively carried out saturating twice
According to each 90 ° of transillumination angle interval；
To the conduit of same specification, an image quality indicator is put according at interval of 90 °；When simultaneously transillumination different size conduit
When, put different image quality indicators；
Step 2.3 carries out transillumination, and using the vertical transillumination of double-walled slur and double-walled slur elliptic imaging transillumination, conduit is carried out
Double-walled slur transillumination.
10. a kind of detection method based on small diameter conduits batch ray detecting apparatus as claimed in claim 9, its feature exist
In：Each point of the arc surface of the laying rack (5) is in point of contact with x-ray source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710851912.3A CN107782753B (en) | 2017-09-19 | 2017-09-19 | Batch radiographic detection device and method for small-diameter catheters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710851912.3A CN107782753B (en) | 2017-09-19 | 2017-09-19 | Batch radiographic detection device and method for small-diameter catheters |
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| CN107782753A true CN107782753A (en) | 2018-03-09 |
| CN107782753B CN107782753B (en) | 2020-12-15 |
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ID=61438154
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| CN201710851912.3A Active CN107782753B (en) | 2017-09-19 | 2017-09-19 | Batch radiographic detection device and method for small-diameter catheters |
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| CN109828036A (en) * | 2019-03-21 | 2019-05-31 | 江苏三合声源超声波科技有限公司 | Small blind area guide sleeve |
| CN113125473A (en) * | 2020-01-13 | 2021-07-16 | 中国石油天然气集团有限公司 | Pipeline X-ray digital imaging detection equipment calibration method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109444180A (en) * | 2018-10-24 | 2019-03-08 | 北京卫星制造厂有限公司 | NF series heat insulation material product detection method of X-ray |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107782753B (en) | 2020-12-15 |
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