CN202210093U - Ultrasonic detection scanning rack adopting TOFD method - Google Patents

Ultrasonic detection scanning rack adopting TOFD method Download PDF

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Publication number
CN202210093U
CN202210093U CN 201120288968 CN201120288968U CN202210093U CN 202210093 U CN202210093 U CN 202210093U CN 201120288968 CN201120288968 CN 201120288968 CN 201120288968 U CN201120288968 U CN 201120288968U CN 202210093 U CN202210093 U CN 202210093U
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CN
China
Prior art keywords
slide
link
probe
time difference
scanning frame
Prior art date
Application number
CN 201120288968
Other languages
Chinese (zh)
Inventor
钟志民
王东辉
汪明辉
陆琦
张效翔
石欢
樊钊
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国核电站运行服务技术有限公司
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Priority to CN 201120288968 priority Critical patent/CN202210093U/en
Application granted granted Critical
Publication of CN202210093U publication Critical patent/CN202210093U/en

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Abstract

The utility model discloses an ultrasonic detection scanning rack adopting a TOFD (Time-of-flight Diffraction) method. The ultrasonic detection scanning rack comprises roller components and probe clamp components, and further comprises two slide connecting rods and a rotary joint; one end of each slide connecting rod is fixedly connected with the rotary joint; a locking handle is arranged on the rotary joint; and the roller components and the probe clamp components are arranged on both the two slide connecting rods, and can slide along and be locked on the slide connecting rods. The rotary joint is connected with the two slide connecting rods, so that the included angle between the two slide connecting rods can be changed conveniently; and the mounting positions of the roller components and the probe clamp components on the slide connecting rods can be adjusted based on actual requirements, so that the probe space can be optionally adjusted within a certain range. Therefore, the application range of the scanning rack can be expanded to various weld joint detection with limited detection spaces, such as flat plate weld joints, straight pipe longitudinal weld joints, variable-diameter pipe weld joints, fillet welds, and the like.

Description

Diffraction time difference method ultrasonic inspecting and scanning frame

Technical field

The utility model relates to the diffraction time difference method pick-up unit in a kind of Non-Destructive Testing field, particularly a kind of diffraction time difference method ultrasonic inspecting and scanning frame.

Background technology

Ultrasonic diffraction time difference method (TOFD) is a kind of new non-destructive testing technology.When employing should technology detects pipe welding seam, need to use one or more groups ultrasonic probe, and every pair of probe needs the phase butt welded seam to be symmetrically distributed.Through measuring the propagation time difference of diffracted wave, generally can accurately obtain the size and the position of defective.

When detecting, need to use the scanning frame, to guarantee that ultrasonic probe is symmetrically distributed with respect to detected weld with ultrasonic diffraction time difference method.Disclose a kind of small diameter tube ultrasonic wave diffraction time difference method such as Chinese utility model patent 200920251234.8 and detected single group probe scanning frame, and Chinese utility model patent 201020270291.3 discloses a kind of diffraction time difference method ultrasonic inspecting and scanning frame.But existing scanning frame only is applicable to the detection of dull and stereotyped weld seam or pipeline girth weld, and for the detection of tapered pipeline girth joint or straight tube longitudinal seam, existing scanning frame then can't satisfy the detection requirement.Find that through investigation also there is following problem in existing scanning frame:

(1) during the limited space of weld seam both sides, the scanning frame can't effectively be placed;

(2) probe can not contact with the surface of the work of weld seam both sides well, and coupling effect is poor;

When (3) regulating probe spacing or replacing probe, need the hand disassembly fixed screw, waste time and energy;

(4) probe spacing needs hand dipping, and is time-consuming and precision is relatively poor.

The utility model content

The technical matters that the utility model will solve provides a kind of diffraction time difference method ultrasonic inspecting and scanning frame easy to use, applied widely, to overcome the above-mentioned defective of prior art.

In order to solve the problems of the technologies described above; The utility model adopts following technical scheme: a kind of diffraction time difference method ultrasonic inspecting and scanning frame; Comprise roll wheel assembly and probe clamp assemblies; Also comprise two slide links and a swivel adapter head, an end of two slide links is connected with swivel adapter head respectively, and said swivel adapter head is provided with set lever; Said roll wheel assembly and probe clamp assemblies all are installed on the every slide link, and said roll wheel assembly can and can be locked on the slide link along the slide link slip with the probe clamp assemblies.

Preferably, also be connected with drawing handle on the said swivel adapter head, the drawing handle setting that is inclined upwardly.

Preferably, also be provided with the corner index dial on the said swivel adapter head.

Preferably, said slide link is provided with graduated scale.

Preferably; Be provided with dovetail groove on the said slide link along its length, be provided with slide block in the dovetail groove, a said slide block and a lock-screw threaded engagement; The end of lock-screw is fixedly connected one handle; Said roll wheel assembly comprises a roller and an axle stand, and said axle stand is clamped between said handle and the slide link, and axle stand is provided with the slotted hole that supplies said lock-screw to pass.

More preferably, said roller is a magnetic rollers.

More preferably, at least one roller is provided with rotary encoder.

Preferably, on every slide link two roll wheel assemblies are installed all.

Preferably; Be provided with dovetail groove on the said slide link along its length, be provided with slide block in the dovetail groove, a said slide block and a lock-screw threaded engagement; The end of lock-screw is fixedly connected one handle; Said probe clamp assemblies comprises interconnective probe holder and link, and said link is clamped between said handle and the slide link, and link is provided with the slotted hole that supplies said lock-screw to pass.

More preferably, removably connect between said probe holder and the link, between probe holder and link, also be provided with spring.

Compared with prior art, the beneficial effect of the utility model is very significant: the utility model connects two slide links through a swivel adapter head, can change angle between two slide links easily; Roll wheel assembly also can be regulated with the installation site of probe clamp assemblies on slide link according to actual needs, thereby probe spacing can be adjusted arbitrarily within the specific limits.Therefore the scope of application of the utility model can be extended to and comprise the detection that dull and stereotyped weld seam, straight tube longitudinal seam, reducer pipe weld seam and fillet weld etc. is detected the multiple weld seam under the limited space situation.The utility model adopts modular construction, and the disassembling, assembling and replacing parts are convenient and time-saving.Slotted hole on the probe clamp assemblies link makes the probe and the vertical range of surface of the work to regulate; Spring plug-in structure between probe holder and the link guarantees that probe and workpiece fit tightly, are coupled good.Drawing handle adopts the formula structure that is inclined upwardly, and can apply bigger downforce to probe, strengthens coupling effect.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done further explain.

Fig. 1 is the front view of the utility model diffraction time difference method ultrasonic inspecting and scanning frame.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the cut-open view at I-I place among Fig. 1.

Fig. 4 is the synoptic diagram that the utility model is used for the fillet weld scanning.

Fig. 5 is the synoptic diagram that the utility model is used for the scanning of reducer pipe weld seam.

Among the figure:

1, slide link, 2, swivel adapter head, 3, set lever, 4, slide link, 5, roll wheel assembly,

6, probe clamp assemblies, 7, the corner index dial, 8, drawing handle, 9, rotary encoder, 10, slide block,

11, handle, 12, dovetail groove, 13, lock-screw, 20, transmitting probe, 30, receiving transducer,

40, graduated scale, 51, roller, 52, axle stand, 53, slotted hole, 61, probe holder,

62, link, 63, slotted hole, 64, spring, A, defective upper extreme point, B, defective lower extreme point.

Embodiment

Shown in Fig. 1-3, the utility model diffraction time difference method ultrasonic inspecting and scanning frame comprises that an end of 2, two slide links of 1,4 and swivel adapter heads of two slide links 1,4 is fixedly connected with swivel adapter head 2 respectively.Preferably, two slide links 1,4 adopt quick inserting mode to link to each other with swivel adapter head 2, so that change the slide link of different length according to actual needs fast.On swivel adapter head 2, be provided with set lever 3, when set lever 3 unclamps, two slide links 1, can relatively rotate through swivel adapter head 2 between 4, form hinged relationship; When set lever 3 lockings, two slide links 1, the angles between 4 are fixed, and can not relatively rotate again.Set lever 3 can adopt known configurations such as screw lock or camlock, does not give unnecessary details at this.

Preferably, for the ease of scanning operation, on swivel adapter head 2, also be connected with drawing handle 8, drawing handle 8 settings that be inclined upwardly can apply bigger downforce to probe, the enhancing coupling effect.In this preferred embodiment, on swivel adapter head 2, also be provided with corner index dial 7, so that read two slide links 1, the angle between 4 intuitively.

The probe clamp assemblies 6 that all is equipped with on every slide link 1,4 at least one roll wheel assembly 5 and 6, two slide links of at least one probe clamp assemblies 1,4 is installed relatively.In this preferred embodiment, on the every slide link 1,4 two roll wheel assemblies 5 are installed all, so that adapt to surface of the work better, improve the coupling effect of probe and workpiece.Roll wheel assembly 5 both can slide along slide link 1,4 with probe clamp assemblies 6, was used to regulate the spacing of roll wheel assembly 5 or the spacing of probe; Also can roll wheel assembly 5 and probe clamp assemblies 6 be locked on the slide link 1,4, to keep their stationkeeping with known locking means.In order to read probe spacing intuitively, graduated scale 40 can also be set at slide link 1,4.

As shown in Figure 1; In a preferred embodiment of the utility model; Probe clamp assemblies 6 comprises interconnective probe holder 61 and link 62, and probe holder 61 is used for installing probe (ultrasonic probe and voussoir), and link 62 is used to connect probe holder 61 and slide link 1,4.Slide link 1,4 can adopt industrial aluminum profile to process; As shown in Figure 3, slide link 1 is provided with dovetail groove 12 on (or 4) along its length, is provided with slide block 10 in the dovetail groove 12; Slide block 10 and a lock-screw 13 threaded engagement; The end of lock-screw 13 is fixedly connected one handle 11, and above-mentioned link 62 is clamped between handle 11 and the slide link 1 (or 4), and link 62 is provided with 63 (see figure 1)s of slotted hole longitudinally that supply said lock-screw 13 to pass.Turning handle 11, the tight screw 13 of releasable lock, can regulate the lateral attitude of link 62 on slide link 1 (or 4) this moment on the one hand, thereby regulate probe spacing; Also can regulate the lengthwise position of link 62 on slide link 1 (or 4) on the other hand, thereby regulate the vertical range of probe and surface of the work, guarantee probe and surface of the work good coupling.For the ease of changing probe, preferably adopt easy-to-dismount structure to connect between probe holder 61 and the link 62, such as adopting known quick plug-in structure to be connected.When dismounting is popped one's head in, can take off probe holder 61 from link 62 earlier, will pop one's head in removes or changes a probe from probe holder 61 again, probe holder 61 is installed back on the link 62 at last to get final product.Further, can also between probe holder 61 and link 62, spring 64 be set, spring 64 can apply the elasticity downforce to probe holder 61, and the probe and the surface of the work that are contained on the probe holder 61 are fitted tightly.

The mounting means of roll wheel assembly 5 on slide link 1,4 is identical with the mounting means of probe clamp assemblies 6, also is to install on the slide link with the slide block that is arranged in the dovetail groove through the lock-screw of band handle.As shown in Figure 1, each roll wheel assembly 5 comprises a roller 51 and an axle stand 52, and axle stand 52 is clamped between said handle and the slide link, and axle stand is provided with the slotted hole longitudinally 53 that supplies said lock-screw to pass.Release handle also can be regulated lateral attitude and the lengthwise position of roll wheel assembly 5 on slide link 1,4.In order to guarantee that roller 51 well contacts with surface of the work, roller 51 is preferably magnetic rollers.And at least one roller 51, rotary encoder 9 is set, be used for defect location.

The utility model scanning frame is because the adjustable included angle of two slide links 1,4; Roll wheel assembly 5 and the adjustable positions of probe clamp assemblies 6 on slide link 1,4; Therefore dirigibility is better; The scope of application is wider, can detect the detection of the multiple weld seam under the limited space situation to dull and stereotyped weld seam, straight tube longitudinal seam, reducer pipe weld seam and fillet weld etc.As shown in Figure 4; When the utility model is used for the fillet weld scanning; Can make two slide links 1,4 in vertical state, transmitting probe 20 is installed in respectively on two slide links 1,4 with receiving transducer 30, is positioned at the both sides of weld seam to be detected; Transmitting probe 20, receiving transducer 30 and roller well contact with weld seam both sides surface of the work respectively; When making the scanning frame along weld movement,, can confirm the position of defective according to the signal of transmitting probe 20, receiving transducer 30 and rotary encoder 9 through drawing handle; And, confirm the degree of depth and the height of defective according to the upper extreme point A and the lower extreme point B of defective.Distance between probe can directly read to convert and obtain through graduated scale on the slide link 1,4 and the corner scale on the swivel adapter head.

In like manner, change the angle of two slide links 1,4, the utility model scanning frame also can be used for the scanning of reducer pipe weld seam, straight tube longitudinal seam, and is as shown in Figure 5.

Thicker for seized workpiece, weld seam both sides probe spacing requires bigger situation, and the slide link 1,4 that will be connected with swivel adapter head 2 is replaced by another kind of longer specification, and other assemblies remain unchanged, and can satisfy the detection requirement.

Claims (10)

1. a diffraction time difference method ultrasonic inspecting and scanning frame comprises roll wheel assembly (5) and probe clamp assemblies (6), it is characterized in that; Also comprise two slide links (1,4) and a swivel adapter head (2), two slide links (1; 4) a end is connected with swivel adapter head (2) respectively, and said swivel adapter head (2) is provided with set lever (3), every slide link (1; Said roll wheel assembly (5) and probe clamp assemblies (6) all are installed 4); Said roll wheel assembly (5) and probe clamp assemblies (6) can slide along slide link (1,4) and also can be locked on the slide link (1,4).
2. diffraction time difference method ultrasonic inspecting and scanning frame according to claim 1 is characterized in that, also is connected with drawing handle (8) on the said swivel adapter head (2), drawing handle (8) setting that is inclined upwardly.
3. diffraction time difference method ultrasonic inspecting and scanning frame according to claim 1 is characterized in that, also is provided with corner index dial (7) on the said swivel adapter head (2).
4. diffraction time difference method ultrasonic inspecting and scanning frame according to claim 1 is characterized in that said slide link (1,4) is provided with graduated scale (40).
5. diffraction time difference method ultrasonic inspecting and scanning frame according to claim 1 is characterized in that, said slide link (1; 4) be provided with dovetail groove (12) on along its length; Be provided with slide block (10) in the dovetail groove (12), said slide block (10) and a lock-screw (13) threaded engagement, the end of lock-screw (13) is fixedly connected one handle (11); Said roll wheel assembly (5) comprises a roller (51) and an axle stand (52); Said axle stand (52) is clamped between said handle (11) and the slide link (1,4), and axle stand (52) is provided with the slotted hole (53) that supplies said lock-screw (13) to pass.
6. diffraction time difference method ultrasonic inspecting and scanning frame according to claim 5 is characterized in that said roller is a magnetic rollers.
7. diffraction time difference method ultrasonic inspecting and scanning frame according to claim 5 is characterized in that at least one roller (51) is provided with rotary encoder (9).
8. diffraction time difference method ultrasonic inspecting and scanning frame according to claim 1 is characterized in that, two roll wheel assemblies (5) all are installed on the every slide link (1,4).
9. diffraction time difference method ultrasonic inspecting and scanning frame according to claim 1 is characterized in that, said slide link (1; 4) be provided with dovetail groove (12) on along its length; Be provided with slide block (10) in the dovetail groove (12), said slide block (10) and a lock-screw (13) threaded engagement, the end of lock-screw (13) is fixedly connected one handle (11); Said probe clamp assemblies (6) comprises interconnective probe holder (61) and link (62); Said link (62) is clamped between handle (11) and the slide link (1,4), and link (62) is provided with the slotted hole (63) that supplies said lock-screw (13) to pass.
10. diffraction time difference method ultrasonic inspecting and scanning frame according to claim 9 is characterized in that, removably connects between probe holder (61) and the link (62), between probe holder (61) and link (62), also is provided with spring (64).
CN 201120288968 2011-08-10 2011-08-10 Ultrasonic detection scanning rack adopting TOFD method CN202210093U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120288968 CN202210093U (en) 2011-08-10 2011-08-10 Ultrasonic detection scanning rack adopting TOFD method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120288968 CN202210093U (en) 2011-08-10 2011-08-10 Ultrasonic detection scanning rack adopting TOFD method

Publications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102384943A (en) * 2011-08-10 2012-03-21 国核电站运行服务技术有限公司 Time-of-flight diffraction ultrasonic scanning bracket
CN103308601A (en) * 2013-05-16 2013-09-18 合肥聚能电物理高技术开发有限公司 Ultrasonic water immersion testing equipment for metal circular pipe
CN103543211A (en) * 2013-11-01 2014-01-29 国核电站运行服务技术有限公司 Small-diameter tube inner wall detection probe assembly
CN105301115A (en) * 2015-11-24 2016-02-03 华北电力科学研究院有限责任公司 Scanning rack used in ultrasonic diffraction time difference method
CN107607625A (en) * 2017-08-07 2018-01-19 上海斐讯数据通信技术有限公司 A kind of controllable detection device of detection angle and detection method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102384943A (en) * 2011-08-10 2012-03-21 国核电站运行服务技术有限公司 Time-of-flight diffraction ultrasonic scanning bracket
CN102384943B (en) * 2011-08-10 2014-04-16 国核电站运行服务技术有限公司 Time-of-flight diffraction ultrasonic scanning bracket
CN103308601A (en) * 2013-05-16 2013-09-18 合肥聚能电物理高技术开发有限公司 Ultrasonic water immersion testing equipment for metal circular pipe
CN103308601B (en) * 2013-05-16 2016-11-09 合肥聚能电物理高技术开发有限公司 Metal circular tubing ultrasonic water immersion detects equipment
CN103543211A (en) * 2013-11-01 2014-01-29 国核电站运行服务技术有限公司 Small-diameter tube inner wall detection probe assembly
CN105301115A (en) * 2015-11-24 2016-02-03 华北电力科学研究院有限责任公司 Scanning rack used in ultrasonic diffraction time difference method
CN105301115B (en) * 2015-11-24 2018-12-25 华北电力科学研究院有限责任公司 Ultrasonic wave diffraction time difference method scanning frame
CN107607625A (en) * 2017-08-07 2018-01-19 上海斐讯数据通信技术有限公司 A kind of controllable detection device of detection angle and detection method

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