CN208736835U - A kind of TOFD scanning equipment - Google Patents
A kind of TOFD scanning equipment Download PDFInfo
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- CN208736835U CN208736835U CN201821460571.3U CN201821460571U CN208736835U CN 208736835 U CN208736835 U CN 208736835U CN 201821460571 U CN201821460571 U CN 201821460571U CN 208736835 U CN208736835 U CN 208736835U
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- connecting rod
- encoder
- probe
- shortcoming
- scanning equipment
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Abstract
The utility model discloses a kind of tilting scanning equipments of TOFD.The utility model includes encoder connecting rod, probe connecting rod including angle dial and adjusting nut, encoder connecting rod one end is flexibly connected in the middle part of probe connecting rod by adjusting nut, the encoder connecting rod other end is equipped with encoder, probe connecting rod two end is mounted on probe, and encoder connecting rod and the junction of probe connecting rod are equipped with an angle dial.The utility model is by changing the probe connecting rod status vertical with encoder connecting rod, make angled therebetween, encoder connecting rod is moved along the length direction of weld seam, to find and fusion length direction almost vertical lateral shortcoming, compared with conventional scanning equipment, it can meet to the discovery laterally lacked, quantitative and judge needs.
Description
Technical field
The utility model relates to instrument and meter field of non destructive testing, more particularly, to a kind of tilting scanning equipment of TOFD.
Background technique
Weld seam is carried out with TOFD (Time of Flight Diffraction, diffraction time difference method ultrasound detection) internal
When quality testing.There is a kind of shortcoming almost vertical with the length direction of weld seam, is called lateral shortcoming.In TOFD detection, Chang Cai
The direction of motion for being probe with the mode of non-parallel scanning, this mode and ultrasonic wave Main beam direction are at right angle, that is, lead
Sound beam direction is vertical with the length direction of weld seam, the lateral shortcoming that such scanning obtains on corresponding TOFD map sometimes only
The bar shaped shortcoming of display one not exceeded dotted shortcoming or slightly length, brings difficulty to judgement, is easy to appear missing inspection.
1. the detection problem laterally lacked:
In order to detect lateral shortcoming, usually using the scanning direction for changing conventional scanning equipment, as shown in Fig. 2, making acoustic beam
The length direction of direction and weld seam has a certain degree, and this mode is influenced by weld reinforcement, operates relatively difficult.
2. the quantitative problem laterally to lack:
In order to quantify to the length laterally lacked, parallel scan mode is usually used, as shown in figure 3, namely visiting
The head direction of motion scanning mode parallel with acoustic beam, this scanning mode need to increase the encoder of transverse shifting, give operation band
Come difficult.Sometimes also using laterally non-parallel scanning, as shown in figure 4, being that need will be more than weld seam the shortcomings that this scanning mode
Height polishes ability examinations, considerably increases the workload of field polish and detection in this way.
Summary of the invention
In order to be effectively improved the status of laterally shortcoming missing inspection and difficult quantitation, the present invention provides one kind to have adjusting nut
With the tilting scanning equipment of angle dial.
The technical solution adopted in the utility model is as follows:
The scanning equipment includes encoder connecting rod, probe connecting rod, angle dial and adjusting nut, encoder connecting rod one
End is flexibly connected in the middle part of probe connecting rod by adjusting nut, and the encoder connecting rod other end is equipped with encoder, connecting rod two end of popping one's head in
It is mounted on probe, encoder connecting rod and the junction of probe connecting rod are equipped with an angle dial.
Angle between the probe connecting rod and encoder connecting rod is freely adjusted by adjusting nut.
The angular dimension of the angle is read by angle dial.
The encoder connecting rod is parallel with the length direction of weld seam, and encoder connecting rod is moved along the length direction of weld seam.
Described device is mainly used in the discovery lateral shortcoming vertical with fusion length direction.
The utility model overcomes the detection problem laterally lacked proposed in background technique, and the utility model was being implemented
It keeps encoder connecting rod parallel with fusion length direction in journey, need to only change the direction of probe connecting rod by adjusting nut
Change the angle between the sound beam direction and fusion length direction of probe, achievees the purpose that discovery is laterally lacked.
The utility model overcomes the problem of difficult quantitation laterally to lack in background technique, and the utility model increases angle
Dial is spent, the angle for reading acoustic beam and fusion length direction can be facilitated, it is assumed that probe connecting rod (sound beam direction) and encoder connect
The angle of bar (fusion length direction) is θ, and according to trigonometric function relationship, the map that laterally lacks shows length l and physical length l '
Between relationship: l '=l tan θ.
The utility model has the beneficial effects that
The utility model is the tilting scanning equipment of TOFD, by changing the probe connecting rod status vertical with encoder connecting rod,
Make therebetween it is angled, encoder connecting rod is moved along the length direction of weld seam, with discovery with fusion length direction almost
Vertical lateral shortcoming；By to discovery shortcoming carry out different angle scanning, can determine this shortcoming general shape and
Length effectively improves the status of laterally shortcoming missing inspection and difficult quantitation to evaluate this shortcoming.
Detailed description of the invention
Fig. 1 is the main view of the utility model.
Fig. 2 is the scanning mode for making the length direction of sound beam direction and weld seam have a certain degree using conventional scanning equipment
Schematic diagram.
Fig. 3 is the scanning mode schematic diagram for keeping probe movement direction parallel with acoustic beam using conventional scanning equipment.
Fig. 4 is to carry out laterally non-parallel scanning mode schematic diagram using conventional scanning equipment.
Fig. 5 is the qualitative diagram laterally to be lacked using the utility model scanning.
Fig. 6 is the schematic diagram for carrying out scanning to shortcoming in test block using conventional scanning equipment.
Fig. 7 is to carry out map obtained by scanning to shortcoming in test block using conventional scanning equipment.
Fig. 8 is the schematic diagram for carrying out scanning to shortcoming in test block using the utility model.
Fig. 9 is to carry out the resulting map of scanning to shortcoming in test block using the utility model.
In figure: encoder connecting rod (1), encoder (3), probe (4), angle dial (5), adjusts spiral shell at probe connecting rod (2)
Female (6).
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the scanning equipment of the utility model includes encoder connecting rod 1, probe connecting rod 2,5 and of angle dial
Adjusting nut 6,1 one end of encoder connecting rod are flexibly connected in the middle part of probe connecting rod 2 by adjusting nut 6, and encoder connecting rod 1 is another
End is equipped with encoder 3, and probe 2 both ends of connecting rod are mounted on probe 4, and encoder connecting rod 1 and the junction of probe connecting rod 2 are equipped with one
Angle dial 5；Angle between probe connecting rod 2 and encoder connecting rod 1 is freely adjusted by adjusting nut, and the angle of angle is big
It is small to be read by angle dial 5.
The utility model is illustrated in figure 5 to the qualitative diagram laterally to lack found,
The specific method is as follows:
(1) assume that one shortcoming of discovery, the display in map are long when the angle of pop one's head in connecting rod 2 and encoder connecting rod 1 is θ
L is spent, then physical length l ' is l tan θ.
(2) quantitatively there is uncertainty because lacking to the transverse direction found, the scanning of different angle can be carried out to same shortcoming,
To determine the general shape and length laterally lacked.
Embodiment 1 (implementation process of the utility model) the following steps are included:
Step 1: selection outer dimension is 400mm × 300mm, and with a thickness of the test block of 30mm, test block specimen surface uses line
Cutting off machine fluting is as shortcoming, groove width 0.15mm, groove depth 10mm, after polishing and the processing such as manual welding are carried out to slot, stay length
For the strip groove of 15mm, measuring bar shaped slot length with the vernier caliper that precision is 0.02mm is 15.04mm.
Step 2: as shown in figure 8, keeping encoder connecting rod 1 parallel with the length direction of test block weld seam when starting to work, adjusting
Section nut 2 makes 55 ° of angle theta of probe connecting rod 6 and encoder connecting rod 1, even if the length direction one of sound beam direction and weld seam presss from both sides
Angle θ, encoder connecting rod 1 along weld seam length direction setting in motion and carry out scanning.
Step 3: after scanning, obtaining TOFD map as shown in Figure 9, map display shortcoming reading is 10.71mm, is sentenced
It is set to bar defect.It is calculated according to the theory in Fig. 5, when θ is 55 °, and shortcoming display length l is 10.71mm, shortcoming is real
Border length l '=l tan θ=15.28mm, the length of opened strip groove is 15.04mm known to step 1, and relative error is
1.60%.
Embodiment 2 (conventional scanning equipment):
As shown in fig. 6, carrying out scanning to the test block shortcoming in embodiment 1 using conventional scanning equipment, obtain as shown in Figure 7
TOFD map, the angle theta of pop one's head in connecting rod 6 and encoder connecting rod 1 is 90 °, and map display shortcoming reading is 0.1mm, is determined as
Dotted shortcoming.
By above-mentioned two embodiment it is found that the transverse direction that conventional scanning equipment scanning obtains is lacked on corresponding TOFD map
It only shows a not exceeded dotted shortcoming, has a tremendous difference with practical shortcoming, the phenomenon that missing inspection occur；And this is practical new
The lateral shortcoming that type scanning obtains is shown as bar defect on corresponding TOFD map, coincide with practical shortcoming, relative error
It is smaller.
Claims (5)
1. a kind of tilting scanning equipment of TOFD, it is characterised in that: including encoder connecting rod (1), probe connecting rod (2), angle index
Disk (5) and adjusting nut (6), encoder connecting rod (1) one end are flexibly connected in the middle part of probe connecting rod (2) by adjusting nut (6)
And active connection place is equipped with an angle dial (5), encoder connecting rod (1) other end is equipped with encoder (3), pops one's head in connecting rod (2)
Both ends are mounted on probe (4).
2. the tilting scanning equipment of TOFD according to claim 1, which is characterized in that the probe connecting rod (2) and encoder
Angle between connecting rod (1) is freely adjusted by adjusting nut.
3. the tilting scanning equipment of TOFD according to claim 2, which is characterized in that the angle passes through angle dial
(5) it is adjusted after reading.
4. the tilting scanning equipment of TOFD according to claim 1, which is characterized in that the encoder connecting rod (1) and weld seam
Length direction it is parallel.
5. the tilting scanning equipment of TOFD according to claim 1, which is characterized in that the encoder connecting rod (1) is along weldering
The length direction of seam moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821460571.3U CN208736835U (en) | 2018-09-07 | 2018-09-07 | A kind of TOFD scanning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821460571.3U CN208736835U (en) | 2018-09-07 | 2018-09-07 | A kind of TOFD scanning equipment |
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| Publication Number | Publication Date |
|---|---|
| CN208736835U true CN208736835U (en) | 2019-04-12 |
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ID=66033941
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821460571.3U Active CN208736835U (en) | 2018-09-07 | 2018-09-07 | A kind of TOFD scanning equipment |
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| CN (1) | CN208736835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320282A (en) * | 2019-06-27 | 2019-10-11 | 东方电气集团东方锅炉股份有限公司 | Variable-angle ultrasonic probe and pipe circumferential weld transverse defect supersonic detection method |
-
2018
- 2018-09-07 CN CN201821460571.3U patent/CN208736835U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320282A (en) * | 2019-06-27 | 2019-10-11 | 东方电气集团东方锅炉股份有限公司 | Variable-angle ultrasonic probe and pipe circumferential weld transverse defect supersonic detection method |
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