CN206618730U - A kind of special scanning frames of TOFD - Google Patents
A kind of special scanning frames of TOFD Download PDFInfo
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- CN206618730U CN206618730U CN201720307978.1U CN201720307978U CN206618730U CN 206618730 U CN206618730 U CN 206618730U CN 201720307978 U CN201720307978 U CN 201720307978U CN 206618730 U CN206618730 U CN 206618730U
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Abstract
The utility model discloses a kind of special scanning frames of TOFD, belong to weld seam detection field, aim to provide a kind of special scanning frames of TOFD of weld seam detection available for small diameter tube, its drip irrigation device is, include chain successively, probe bracket, TOFD encoder specials and grab, phase TOFD dedicated probes are fixedly connected with probe bracket, chain includes some chain chunks, axis is equipped with jointly in the through hole of two adjacent chain chunks, chain is that the contiguous block two of adjacent chain chunk and contiguous block one are formed by connecting by axis, grab can be through groove two and carry on the axis positioned at contiguous block two.
Description
Technical field
The utility model is related to weld seam detection field, more particularly to a kind of special scanning frames of TOFD.
Background technology
Ultrasonic wave diffraction time difference method（TOFD）It is that a kind of rely on obtains from " the end angle " and " end points " inside test specimen to be checked
Diffraction energy come the method that detects defect, compared to ray technology, with higher verification and measurement ratio, save detection time, shorten
Installation period and testing result are by the small advantage of the subjective impact of staff.Scanning frame is must not in TOFD detection process
The utensil that can lack, it can carry ultrasonic probe and be detected the surface movement of material, realize and the ultrasound of object to be detected is swept
Look into.
Publication No. CN203133039U Chinese patent discloses a kind of TOFD scanning frames and TOFD detection means, including
Rotatable two scanning bars, although the angle by changing scanning bar, increases TOFD detection range, this kind is swept
Frame is looked into for the small diameter tube that radius is small or curvature is big, because the probe of scanner and tube surfaces can not effectively be contacted and caused by lack
Compare in space between the problem of sunken recall rate is low, reliability is not high, and many small diameter tube pipe parallelism comparatively denses, small diameter tube
Narrow and small, hand-held TOFD scanning frames can only detect direction where people, it is impossible to carry out effective detection to whole circle circular weld, in turn result in
The appearance of check frequency so that the recall rate reduction of defect.
Utility model content
The purpose of this utility model is to provide a kind of special scanning frames of TOFD, it is convenient to which the weld seam for small diameter tube is examined
Survey, improve the recall rate of defect.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of special scannings of TOFD
Frame, the special scanning frames of the TOFD of bar shaped are from first to last connected with chain, probe bracket, TOFD encoder specials and card in turn
TOFD dedicated probes are fixedly connected with hook, the probe bracket, the chain includes some chain chunks, the chain chunk
Side is provided between two symmetrical contiguous blocks one, two contiguous blocks one and sets fluted one, the chain chunk
Be provided with the symmetrical contiguous block two of two matched with groove one away from the side of contiguous block one, two contiguous blocks two it
Between set through hole be provided with fluted two, the contiguous block one and contiguous block two, adjacent two chain chunks
Axis is equipped with through hole jointly, the contiguous block two of adjacent chain chunk is connected by the chain by axis with contiguous block one
Form, described grab one end is connected with TOFD encoder specials, the grab through groove two and carry in contiguous block two it
Between axis on.
By above-mentioned technical proposal, the contiguous block two and contiguous block one of adjacent chain chunk are connected by shape by axis
Into chain structure to surround tested pipeline so that the phase TOFD dedicated probes and the special TOFD of phased array being connected with chain chunk are special
It can be fitted in encoder on tested pipeline, and then to can be achieved to whole by controlling chain to rotate around pipe under test
Enclose small diameter tube circular weld and carry out more comprehensive quality testing, the appearance in area can not be examined by reducing, so as to improve weld seam
Defect detection rate；And pass through the setting of the axis between groove one and groove two and groove one and groove two so that can be with
By the way that on axis between the contiguous block two of different chain chunks, grab carry is formed into the annular TOFD of different-diameter
Special scanning frame, is detected with the weld seam for being advantageously used in different tube diameters, and generally can be without dismantling or installing chain
Bar chunk, shortens detection time, improves detection efficiency.
Further, elastic webbing, elastic webbing one end set are provided between described grab and TOFD encoder specials
And if be rotatably connected on TOFD encoder specials, the other end is fixedly connected with grab.
By above-mentioned technical proposal, grab is connected with elastic webbing so that grab is when being mounted on axis, by elastic webbing
Pulling force, improve the structural stability of scanning frame, and chain chunk is closely fitted on pipeline so that phase
TOFD dedicated probes can be fitted tightly on tested pipeline by the active force to direction where pipe under test, improve coupling
Effect so that the Quality advance of TOFD collection of illustrative plates, improves weld defect recall rate.
Further, the width of the width of the grab and groove two matches, and the grab is in one contradicted with axis
Side is provided with magnetic pad.
By such scheme, the width of the width and groove two of grab matches so that be both difficult because grab width is excessive
And influence grab carry on axis between contiguous block two or influence grab is removed from axis, it can prevent because of card again
Hook width is too small and easy slidably reciprocated on axis and cause the unstable situation of scanning frame, by the setting of magnetic pad, carry
The high compactness connected between grab and axis so that grab is difficult as the slip of chain is fallen down from axis.
Further, the two ends of described axis are arranged and are rotatably connected to magnetic rollers.
By the setting of above-mentioned technical proposal, axis two ends rotate the magnetic rollers of connection so that chain can be neatly
Ground is detected around the weld seam of pipe under test, and causes chain to be difficult to slide in the presence of magnetic force, and chain chunk is more
It is closely adhered on pipeline so that phase TOFD dedicated probes can be close by the active force to direction where pipe under test
It is fitted on tested pipeline, adds the stability of scanning frame, improves weld defect recall rate.
Further, it is arranged on described axis in contiguous block one away from one end of contiguous block two and is fixedly connected with limited location
Ring, the both sides of the magnetic rollers are spacing by spacing ring and contiguous block one respectively.
By above-mentioned technical proposal, magnetic rollers are limited on axis by spacing ring and contiguous block one, reduce magnetic rolling
Wheel slides on axis and causes the unstable situation of the special scanning frames of this kind of TOFD.
Further, it is arranged on described axis in contiguous block one away from one end of contiguous block two and is fixedly connected with axle
Hold, the magnetic rollers are arranged and are rotatably connected on bearing, be arranged simultaneously away from the side of connection ring in bearing on the axis
Clamp nut is threaded with, the both sides of the bearing are spacing by contiguous block one and clamp nut respectively.
By above-mentioned technical proposal, by the setting of clamp nut, disassembly and assembly can be carried out to chain chunk, it is convenient
Maintenance and Repair to chain, by increase chain chunk can also easily by this kind of TOFD special scanning frames be used for caliber compared with
The weld seam detection of big pipe under test.
Further, described phase TOFD dedicated probes are being fixedly connected with curved surface close to the side of TOFD encoder specials
Voussoir, the caliber of the radian and small diameter tube to be measured of the bottom surface of the curved surface voussoir matches.
By above-mentioned technical proposal, the setting of curved surface voussoir is played a part of protecting phase TOFD dedicated probes, and curved surface
The bottom surface of voussoir has the radian that the caliber with small diameter tube to be measured matches so that the bottom surface of curved surface voussoir and path to be measured
Pipe surface is brought into close contact, and improves weld defect recall rate.
Further, it is connected between two probe brackets on adjusting yoke, the adjusting yoke in two probes
The side positioned at two probe brackets mutually deviated from compression spring, the adjusting yoke is arranged between support to be threaded with
Adjusting nut.
By above-mentioned technical proposal, the setting of adjusting yoke makes two probes be located along the same line, and improvement was being run
Spacing of being popped one's head in journey is suddenly big or suddenly small, unstable；By mutually screwing adjusting nut or unscrewing, thus it is possible to vary between two probes
The distance between, to improve the accuracy of detection.
In summary, the utility model has the advantages that：
The contiguous block two and contiguous block one of adjacent chain chunk are connected by axis and to form chain by multiple chain chunks
Formula structure is to surround tested pipeline so that the phase TOFD dedicated probes being connected with chain chunk can be fitted tightly over tested pipeline
On, the appearance in area can not be examined by reducing, and improve weld defect recall rate；
By the way that grab carry is carried out to the weld seams of different tube diameters on the axis of different chain chunks, conveniently realizing
Detection, shortens detection time, improves detection efficiency；
Pass through the setting of elastic webbing and magnetic rollers so that the phase TOFD dedicated probes being connected with chain chunk can be more
It is closely adhered on tested pipeline, improves weld defect recall rate.
Brief description of the drawings
Fig. 1 is to be used to embody annexation schematic diagram between contiguous block one, contiguous block two and axis in embodiment 1；
Fig. 2 is to be used to embody connection chunk, the annexation schematic diagram between chain and grab in embodiment 1；
Fig. 3 is the enlarged drawing in A portions in Fig. 1；
Fig. 4 is to be used to embody annexation schematic diagram between magnetic pad and grab in embodiment 1；
Fig. 5 is to be used to embody annexation schematic diagram between clamp nut, bearing and magnetic rollers in embodiment 2.
In figure, 1, chain；11st, chain chunk；111st, contiguous block one；112nd, contiguous block two；113rd, groove one；114th, groove
Two；115th, through hole；116th, axis；117th, spacing ring；2nd, TOFD encoder specials；3rd, probe bracket；31st, TOFD dedicated probes；
4th, grab；41st, magnetic pad；42nd, elastic webbing；5th, magnetic rollers；51st, bearing；52nd, clamp nut；53rd, curved surface voussoir；6th, treat
Test tube road；7th, adjusting yoke；71st, compression spring.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1：A kind of special scanning frames of TOFD, as shown in figure 1, the special scanning frames of TOFD including two bar shapeds, often
The special scanning frames of bar TOFD include on chain 1, probe bracket 3, TOFD encoder specials 2 and grab 4, probe bracket 3 successively
TOFD dedicated probes 31 are fixedly connected with, chain 1 is to be connected to be formed from beginning to end by some adjacent chain chunks 11, and TOFD is special
Probe 31 is being fixedly connected with curved surface voussoir 53 close to the side of TOFD encoder specials 2, when detecting the weld seam of different tube diameters,
Different curved surface voussoirs 53 can be selected so that the caliber of the bottom surface radian and test specimen to be measured of curved surface voussoir 53 matches so that
The bottom surface of curved surface voussoir 53 and the surface of pipe under test 6 are brought into close contact.Adjusting yoke 7 is connected between two probe brackets 3, is adjusted
On section pull bar 7 compression spring 71 is arranged between two probe brackets 3.
As shown in figs. 1 and 3, the side of chain chunk 11 is provided with two symmetrical contiguous blocks 1, two contiguous blocks one
Fluted 1 are set between 111.Chain chunk 11 is provided with two symmetrical connections in one end away from contiguous block 1
There is the distance that the width with groove 1 matches so that contiguous block 2 112 between block 2 112, two contiguous blocks 2 112
It can be embedded in groove 1.Set fluted 2 114 between two contiguous blocks 2 112, contiguous block 1 and contiguous block two
It is provided with through hole 115 on 112, axis 116, axis 116 is equipped with jointly in the through hole 115 of adjacent two chain chunks 11
Two ends be fixedly connected with restraining position ring block 117, the two ends of axis 116 are located at is arranged with magnetic between spacing ring 117 and contiguous block 2 112
Property roller 5, by axis 116 by the contiguous block 1 of previous chain chunk 11 and the contiguous block 2 112 of latter chain chunk 11
Connect, several adjacent chain chunks 11 connect and compose chain 1 by axis 116.
As illustrated in fig. 1 and 2, TOFD encoder specials 2 are connected with elastic webbing 42 away from the side of chain 1 by axis 116,
Elastic webbing 42 is fixedly connected with grab 4 in the side away from TOFD encoder specials 2, and grab 4 is matched with the size of groove 2 114
Allow grab 4 from the side of pipe under test 6 pass through groove 2 114, and can stably carry in grab 4 apart from not
On axis 116 between same contiguous block 2 112, and then the diameter of the special scanning frames of annular TOFD can be conveniently adjusted, from
And the detection of the test specimen to different-diameter.
As shown in figs. 1 and 4, elastic webbing 42 is provided between grab 4 and axis 116, the one end of elastic webbing 42 is set in axis
On 116, the other end is fixedly connected with grab 4.Grab 4 is provided with magnetic pad 41 in the side for contradicting axis 116, passes through magnetic
Pad 41 causes grab 4 to be difficult to slide from axis 116.
Embodiment：Select the curved surface voussoir 53 of suitable radian according to the size of caliber, and by curved surface voussoir 53
It is installed on phase TOFD dedicated probes 31, phase TOFD dedicated probes 31 is fixed on probe bracket 3, by this kind of TOFD scanning frame
It is centered around on tested pipe fitting, by the carry of grab 4 on suitable axis 116, TOFD scanning frames is fitted on tested pipe fitting, adjusts
The distance of whole phase TOFD dedicated probes 31 and weld seam, smoothly promotes rotation scanning frame, and the circular weld for being tested pipe fitting is carried out
All-round scanning.
Embodiment 2：A kind of special scanning frames of TOFD, as shown in figure 5, being with the difference of embodiment 1, such as Fig. 5 institutes
Show, axis 116 is arranged with bearing 51 in contiguous block 1 away from the side of contiguous block 2 112, and bearing 51 is fixedly connected on axis
116 two ends, magnetic rollers 5 are set on bearing 51 and rotated with bearing 51 and are connected, in bearing 51 away from connection on axis 116
The side of ring is arranged and is threaded with clamp nut 52, causes the He of magnetic rollers 5 by contiguous block 1 and clamp nut 52
Bearing 51 is detachably connected on axis 116.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability
Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but
As long as all being protected in right of the present utility model by Patent Law.
Claims (8)
1. a kind of special scanning frames of TOFD, it is characterized in that：Including two symmetrical TOFD scanning frames, every TOFD scanning frame according to
It is secondary including chain (1), probe bracket (3), TOFD encoder specials (2) and grab (4), is connected with the probe bracket (3)
TOFD dedicated probes (31), the chain (1) includes some chain chunks (11), and the side of the chain chunk (11) is provided with
Fluted one (113), the chain group are set between two symmetrical contiguous blocks one (111), two contiguous blocks one (111)
Block (11) side relative with contiguous block one (111) is provided with the symmetrical contiguous block two of two matched with groove one (113)
(112) fluted two (114), the contiguous block one (111) and contiguous block two, are set between two contiguous blocks two (112)
(112) it is provided with through hole (115) on, is equipped with jointly in the through hole (115) of adjacent two chain chunks (11) logical
Axle (116), the chain (1) is by the contiguous block two (112) of adjacent chain chunk (11) and contiguous block one by axis (116)
(111) it is formed by connecting, side of the TOFD encoder specials (2) away from chain (1) is connected with grab (4), when for detecting
When, the grab (4) is through groove two (114) and carry on the axis (116) positioned at contiguous block two (112).
2. the special scanning frames of TOFD according to claim 1, it is characterized in that：The grab (4) and TOFD encoder specials
(2) elastic webbing (42) is connected between, one end of the elastic webbing (42) is arranged and is rotatably connected on TOFD encoder specials (2)
On, the other end is fixedly connected with grab (4).
3. the special scanning frames of TOFD according to claim 1, it is characterized in that：The width of the grab (4) and groove two
(114) width matches, and the grab (4) is provided with the side contradicted with axis (116) for close with axis (116)
The magnetic pad (41) of laminating.
4. the special scanning frames of TOFD according to claim 1, it is characterized in that：The two ends of the axis (116) are arranged and turned
It is dynamic to be connected with magnetic rollers (5).
5. the special scanning frames of TOFD according to claim 4, it is characterized in that：In contiguous block one on the axis (116)
(111) one end away from contiguous block two (112) is arranged and is fixedly connected with restraining position ring block (117), the both sides of the magnetic rollers (5)
It is spacing by spacing ring (117) and contiguous block one (111) respectively.
6. the special scanning frames of TOFD according to claim 4, it is characterized in that：In contiguous block one on the axis (116)
(111) one end away from contiguous block two (112) is arranged and is fixedly connected with bearing (51), and the magnetic rollers (5) are arranged and turned
It is dynamic to be connected on bearing (51), it is arranged on the axis (116) in bearing (51) away from the side of contiguous block one (111) and screw thread
Clamp nut (52) is connected with, the both sides of the bearing (51) are spacing by contiguous block one (111) and clamp nut (52) respectively.
7. the special scanning frames of TOFD according to claim 1, it is characterized in that：The TOFD dedicated probes (31) are close
The side of TOFD encoder specials (2) is fixedly connected with curved surface voussoir (53), the radian of the bottom surface of the curved surface voussoir (53) with
The caliber of pipe under test (6) matches.
8. the special scanning frames of TOFD according to claim 1, it is characterized in that：Connected between two probe brackets (3)
Have and be arranged with compression spring (71) between two probe brackets (3) on adjusting yoke (7), the adjusting yoke (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720307978.1U CN206618730U (en) | 2017-03-27 | 2017-03-27 | A kind of special scanning frames of TOFD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720307978.1U CN206618730U (en) | 2017-03-27 | 2017-03-27 | A kind of special scanning frames of TOFD |
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| CN206618730U true CN206618730U (en) | 2017-11-07 |
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| CN201720307978.1U Active CN206618730U (en) | 2017-03-27 | 2017-03-27 | A kind of special scanning frames of TOFD |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931627A (en) * | 2018-08-31 | 2018-12-04 | 广东汕头超声电子股份有限公司 | A kind of quick-changing type tubing scanning frame |
| CN109765301A (en) * | 2019-03-21 | 2019-05-17 | 江苏省特种设备安全监督检验研究院 | It is a kind of can obstacle detouring TOFD detection voussoir |
| CN110469780A (en) * | 2019-07-26 | 2019-11-19 | 中国石油天然气集团公司管材研究所 | The installation of reducing sensor and protection location and device for the monitoring of more specification pipelines |
-
2017
- 2017-03-27 CN CN201720307978.1U patent/CN206618730U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931627A (en) * | 2018-08-31 | 2018-12-04 | 广东汕头超声电子股份有限公司 | A kind of quick-changing type tubing scanning frame |
| CN109765301A (en) * | 2019-03-21 | 2019-05-17 | 江苏省特种设备安全监督检验研究院 | It is a kind of can obstacle detouring TOFD detection voussoir |
| CN109765301B (en) * | 2019-03-21 | 2023-08-22 | 江苏省特种设备安全监督检验研究院 | But voussoir is used in TOFD detection of barrier |
| CN110469780A (en) * | 2019-07-26 | 2019-11-19 | 中国石油天然气集团公司管材研究所 | The installation of reducing sensor and protection location and device for the monitoring of more specification pipelines |
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